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Title:
POSTER ATTACHMENT SYSTEM FOR CURTAIN SIDED VEHICLES
Document Type and Number:
WIPO Patent Application WO/2020/035660
Kind Code:
A2
Abstract:
The invention provides a vehicle curtain clip (10A) for securing a display panel to the vehicle curtain of a curtain sided vehicle, each clip being secured at or near its back surface (168) to the vehicle curtain by bonding, melting or welding. The vehicle curtain clip (10A) comprises a clip body (12A) including a plurality of slotted channels (14), each slotted channel extending parallel to an axial direction and adapted to engage a keder bead provided on an edge of a display panel. The back surface (168) of each vehicle curtain clip may be bonded directly to a surface of the vehicle curtain, or each vehicle curtain clip may be adapted to engage in an aperture in the vehicle curtain, and may include a retaining flange (12B) extending at least partially around the clip body, the flange being sufficiently stiff to prevent the clip passing through an aperture whose shape and size corresponds to the shape and size of the clip body. The clip (10A) may include a frame member (160) separate from the clip body and having an aperture (162) whose shape and size corresponds to the shape and size of the clip body. The invention also provides a vehicle curtain provided with such clips.

Inventors:
PITT JOHN DUNLOP (GB)
Application Number:
GB2019/052213
Publication Date:
February 20, 2020
Filing Date:
August 07, 2019
Export Citation:
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Assignee:
PITT FAMILY HOLDINGS LTD (GB)
International Classes:
B60J5/06; G09F21/04
Attorney, Agent or Firm:
MURGITROYD & COMPANY (GB)
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Claims:
CLAIMS

1. A vehicle curtain clip for attaching a display panel to a vehicle curtain, comprising a clip body including a plurality of slotted channels, each slotted channel extending parallel to an axial direction and adapted to engage a keder bead provided on an edge of a display panel.

2. The vehicle curtain clip of claim 1 , wherein the clip body has a substantially uniform cross-section in the axial direction over at least part of its length in the axial direction, and wherein each slotted channel comprises a channel and a slot opening into the channel.

3. The vehicle curtain clip of claim 1 or 2, wherein the clip is adapted to engage in an aperture in the vehicle curtain, and includes a retaining flange extending at least partially around the clip body, the flange being sufficiently stiff to prevent the clip passing through an aperture whose shape and size corresponds to the shape and size of the clip body.

4. The vehicle curtain clip of claim 3, wherein the clip further includes a frame member separate from the clip body and having an aperture whose shape and size corresponds to the shape and size of the clip body.

5. The vehicle curtain clip of claim 4, wherein the frame member is of a material which is more flexible than the material of the clip body.

6. The vehicle curtain clip of claim 4 or 5, wherein the clip body has a thickness sufficient for the slotted channels to project beyond a front side of the frame member when the clip body is engaged in the aperture and the retaining flange which extends around the clip body is engaged against a rear side of the frame member.

7. The vehicle curtain clip of any preceding claim, wherein the clip has a length and/or width measured in the plane of the flange of less than 60 mm, most preferably less than 55 mm or approximately 50 mm.

8. The vehicle curtain clip of any preceding claim, wherein the slotted channels are arranged in an array of parallel channels including at least a first channel and a second channel, and the slot of the first channel is in communication with the second channel, such that a web of a display panel engaged in the first channel by a keder bead provided on an edge of the display panel extends through the slot of the first channel and through the second channel.

9. The vehicle curtain clip of claim 8, wherein the slotted channels include a third channel, the third channel being in communication with the first and second channels, such that a web of a display panel engaged in the first channel by the keder bead provided on an edge of the display panel extends through the slot of the first channel, through the second channel and through the third channel.

10. The vehicle curtain clip of claim 8 or 9, wherein the slot of the channel farthest from the first channel is in communication with an opening of the clip, and/or the clip includes a resilient serrated slot extending between slot of the channel farthest from the first channel and the opening of the clip.

11. A vehicle curtain comprising:

a vehicle curtain for displaying a display panel thereon; and

a plurality of vehicle curtain clips according to any of claims 1 to 10, each clip being secured at or near its back surface to the vehicle curtain by bonding, melting or welding.

12. The vehicle curtain of claim 11 , wherein the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include:

a plurality of the vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain;

a plurality of the vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

a plurality of the vehicle curtain clips aligned vertically in a left side row on the vehicle curtain; and

a plurality of the vehicle curtain clips aligned vertically in a right side row on the vehicle curtain, wherein each of the vehicle curtain clips is welded or melted to the curtain at a location of one of the plurality of curtain reinforcing straps.

13. The vehicle curtain of claim 11 , wherein the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include:

a plurality of the vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain; and

a plurality of the vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

wherein the curtain has a first vertical framing member secured thereto at a forward position on the vehicle curtain and a second vertical framing member removably secured thereto at a rear position on the vehicle curtain, the forward position being forward of the rear position when the vehicle travels in a forward direction,

wherein each of the vehicle curtain clips is welded or melted to the curtain at a location of one of the plurality of curtain reinforcing straps.

14. The vehicle curtain of claim 13, wherein the first and/or second vertical framing members comprise a slotted channel adapted to engage a keder bead provided on a vertical edge of a display panel.

15. The vehicle curtain of claim 14, wherein the first vertical framing member is fixed to the curtain by bonding, welding or melting to the curtain at a location of one of the plurality of curtain reinforcing straps.

16. The vehicle curtain of claim 14 or 15, wherein the second vertical framing member is fixed to the curtain by mutually engaging fasteners such as mushroom headed fasteners, and wherein at least a portion of the mutually engaging fasteners are secured to the curtain by bonding, welding or melting to the curtain at a location of one of the plurality of curtain reinforcing straps.

17. The vehicle curtain of claim 11 , wherein the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include:

a plurality of the vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain; and a plurality of the vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

wherein each vehicle curtain clip includes a frame member having an aperture, the frame member being welded or melted to the curtain at a location between or distal from one or more of the plurality of curtain reinforcing straps, the frame member forming an eyelet in the curtain and the clip having a clip body which is engaged in the eyelet.

18. The vehicle curtain of claim 17, wherein the curtain has a first vertical framing member secured thereto at a forward position on the vehicle curtain and a second vertical framing member removably secured thereto at a rear position on the vehicle curtain, the forward position being forward of the rear position when the vehicle travels in a forward direction,

19. A display panel attachment system for a curtain sided vehicle comprising: a vehicle curtain;

a display panel having at least one keder bead provided on an edge of the display panel; and

a plurality of vehicle curtain clips according to any of claims 1 to 10, wherein each vehicle curtain clip is secured to the vehicle curtain by bonding, melting or welding of either a clip body of the vehicle curtain clip or a frame member of the vehicle curtain clip, and secures the display panel to the curtain by receiving the keder bead in the clip.

20. The display panel attachment system of claim 19, wherein the display panel includes apertures to allow the passage of air therethrough to equalise the pressure on each side of the display panel.

21. The display panel attachment system of claim 19 or 20, wherein the or each keder bead has a diameter of less than 6 mm.

22. The display panel attachment system of any of claims 19 to 21 , wherein the display panel is substantially rectangular in shape, and has upper and lower horizontal edges and left and right vertical edges each provided with a keder bead.

23. A substantially rectangular display panel for use in the display panel attachment system of any of claims 19 to 22, the display panel having an upper edge, a lower edge and two side edges, and having a keder bead provided on each of the upper edge and the lower edge, wherein the or each keder bead is of a resilient material and has a diameter of between 4 mm and 6 mm.

Description:
POSTER ATTACHMENT SYSTEM FOR CURTAIN SIDED VEHICLES

Field of the Invention

This invention relates to clips for curtain sided vehicles, and in particular clips that are used to secure display panels to curtain sided vehicles. This invention also relates to a poster attachment system for curtain sided vehicles.

Background of the Invention

Curtain sided vehicles such as haulage lorries are commonly used to display advertising information. It is common for the advertising information to be printed onto a display panel which is then secured to a vehicle curtain of the curtain sided vehicle. Such display panels usually cover a significant portion of the vehicle curtain.

The display panel is usually secured to the vehicle curtain by a plurality of attachment members, which generally comprise a bolt, and first and second solid members. The first solid member has fastening means for securing to the display panel. The first solid member and display panel are secured to the vehicle curtain by threading the bolt through an aperture in the first solid member, through an aperture in the vehicle curtain and into a threaded portion located in the second solid member. This attachment member comprises at least three different components, which each require a separate manufacturing process. This increases the costs of manufacturing the attachment members.

It is an object of the present invention to obviate or mitigate at least one

disadvantage of prior vehicle curtain clips and poster attachment systems for curtain sided vehicles.

In this specification the term“display panel” is used to refer to any banner, poster, panel or similar which can be printed or otherwise provided with images and/or text and which can be attached to a display site.

Summary of the Invention According to a first aspect of the present invention, there is provided a vehicle curtain clip for attaching a display panel to a vehicle curtain, comprising a clip body including a plurality of slotted channels, each slotted channel extending parallel to an axial direction and adapted to engage a keder bead provided on an edge of a display panel.

Preferably the clip body has a substantially uniform cross-section in the axial direction over at least part of its length in the axial direction.

Each slotted channel may comprise a channel and a slot opening into the channel.

The clip may further include a substantially planar back surface adapted to be bonded to a vehicle curtain.

Alternatively the clip may be adapted to engage in an aperture in the vehicle curtain, and may include a retaining flange extending at least partially, preferably completely, around the clip body, the flange being sufficiently stiff to prevent the clip passing through an aperture whose shape and size corresponds to the shape and size of the clip body.

The clip may further include a frame member separate from the clip body and having an aperture whose shape and size corresponds to the shape and size of the clip body.

The frame member may be of a material which is more flexible than the material of the clip body, for example a soft PVC material.

The frame member may be adapted to be bonded by heat welding to a vehicle curtain to form an eyelet in the vehicle curtain.

The aperture of the frame member may be substantially rectangular in shape.

The clip body may have a thickness sufficient for the slotted channels to project beyond a front side of the frame member when the clip body is engaged in the aperture and the retaining flange which extends around the clip body is engaged against a rear side of the frame member.

The clip body may include detent means adapted to engage with corresponding detent means in the frame member to hold the clip body in the aperture of the frame member. Alternatively the clip may include other fastening means to secure the clip to the frame member so as to hold the clip body in the aperture of the frame member. Alternatively the clip body and aperture may be sized to provide an interference fit to hold the clip body in the aperture of the frame member.

In a first option of the first aspect, of which one illustrative example is illustrated in Figs. 1 and 2, the slotted channels may be arranged adjacent to each other, such that the slots of the slotted channels are coplanar.

The clip may include one or more bonding flanges extending around at least part of the body. The clip may include one or more lugs having a thickness of less than 2 mm, preferably of about 1 mm, extending on opposed upper and lower edges of the clip body or of the flanges extending around the body.

The clip may be of moulded PVC or other suitable moulded plastic material.

Preferably the PVC has a Vicat softening point measured according to EN ISO 306 B50 of below 100°C, more preferably below 80°C. This allows the clip to be secured to a plastic coated curtain of a curtain sided vehicle by melting or welding, thereby achieving a very strong bond.

If the clip includes a frame member, the clip body may be of a more rigid PVC or other suitable moulded plastic material, since it does not have to be secured by melting or welding.

The clip, with or without the bonding flanges, may have a length and/or width measured in the plane of the flange of less than 60 mm, most preferably less than 55 mm or approximately 50 mm. This allows the clip to be secured over a reinforcing strap of a curtain, which has a standard width of about 50 mm. If both the length and width are less than 50 mm, the clip can be installed with the slotted channels either parallel to or perpendicular to the strap, and still have a footprint within the footprint of the strap.

Preferably the clip, with or without the bonding flanges, has a width measured in the plane of the flange of less than 60 mm, most preferably less than 55 mm or approximately 50 mm, and a length measured in the plane of the flange of more than 50 mm. This allows the clip to be secured over a reinforcing strap of a curtain, which has a standard width of about 50 mm, with the length of the clip extending along the length of the strap. If the width is about 50 mm, the clip can be installed with the slotted channels either perpendicular to the strap, and the upper and lower flanges or lugs of the clip can still have a footprint within the footprint of the strap.

If the clip includes a frame member, the frame member may have a length and/or width measured in the plane of the frame member of more than 50mm, because the frame member can be securely heat bonded to a vehicle curtain between reinforcing straps.

The slotted channels may be arranged in an array of parallel channels including at least a first channel and a second channel.

The slot of the first channel may be in communication with the second channel, such that a web of a display panel engaged in the first channel by a keder bead provided on an edge of the display panel extends through the slot of the first channel and through the second channel.

The slotted channels may include a third channel, the third channel being in communication with the first and second channels, such that a web of a display panel engaged in the first channel by the keder bead provided on an edge of the display panel extends through the slot of the first channel, through the second channel and through the third channel.

The slot of the channel farthest from the first channel may be in communication with an opening of the clip. The body of the clip may include a base wall portion from which the flange extends and a resilient cantilevered wall portion spaced from the base wall portion, each of the slotted channels including a first wall portion which is part of the base wall portion and an opposed second wall portion which is part of the cantilevered wall portion.

The body of the clip may include a web portion which joins the cantilevered wall portion to the base wall portion and from which the cantilevered wall portion is cantilevered.

The web portion may form part of the first slotted channel.

The cantilevered wall portion may include a retaining rib arranged to extend parallel to the slotted channels distal from the web. The retaining rib may have a retaining surface on the side of the retaining rib closest to the base wall portion. The retaining surface may be adapted to adopt a position substantially coplanar with the plane of the base wall portion when the cantilevered wall portion is undeformed.

The base wall portion may include an aperture arranged to extend over the area of the retaining rib, so that when the cantilevered wall portion is undeformed the retaining rib is not in contact with the base wall portion.

In a second option of the first aspect, of which one illustrative example is illustrated in Fig. 3, the slotted channels may be arranged adjacent to each other, such that the slots of the slotted channels extend to separate openings in a front surface of the body opposite the back surface, wherein the separate openings are stepped relative to the back surface.

Preferably, the slots of the slotted channels extend at an angle to the back surface of less than 90 degrees.

The front surface of the body may comprise a plurality of stepped portions, wherein separate stepped portions are stepped relative to the back surface.

The planar back surface may be bonded to the vehicle curtain with an adhesive. The planar back surface may be bonded to the vehicle with a high strength bonding tape.

The planar back surface may be bonded to the vehicle curtain with a cooperating mushroom fastener.

The body may be of extruded plastic.

In a third option of the first aspect, of which one illustrative example is illustrated in Figs. 4 and 7, the slotted channels may be arranged adjacent to each other, such that the slots of the slotted channels are coplanar.

The slotted channels may be arranged in an array of parallel channels including at least a first channel and a second channel.

The slot of the first channel may be in communication with the second channel, such that a web of a display panel engaged in the first channel by a keder bead provided on an edge of the display panel extends through the slot of the first channel and through the second channel.

The slotted channels may include a third channel, the third channel being in communication with the first and second channels, such that a web of a display panel engaged in the first channel by the keder bead provided on an edge of the display panel extends through the slot of the first channel, through the second channel and through the third channel.

The slot of the channel farthest from the first channel may be in communication with an opening of the clip.

The clip may include a resilient serrated slot extending between the slot of the farthest channel and the opening of the clip.

The serrated slot may be adapted to engage with and hold resiliently a keder bead provided on an edge of a display panel. The serrated slot may be coplanar with the slots of the slotted channels.

The body may be of extruded plastic

According to a second aspect of the present invention, there is provided a vehicle curtain comprising:

a vehicle curtain for displaying a display panel thereon; and

a plurality of vehicle curtain clips, each clip being secured at its back surface to the vehicle curtain by bonding, melting or welding.

The plurality of vehicle curtain clips may comprise clips according to the first aspect of the invention.

In a first option of the second aspect, , of which one illustrative example is illustrated in Figs. 1 and 2, the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include:

a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain;

a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

a plurality of vehicle curtain clips aligned vertically in a left side row on the vehicle curtain; and

a plurality of vehicle curtain clips aligned vertically in a right side row on the vehicle curtain,

wherein each vehicle curtain clip is welded or melted to the curtain at a location of one of the plurality of curtain reinforcing straps.

The clips may be clips of the first option of the first aspect of the invention.

In a second option of the second aspect, of which one illustrative example is illustrated in Figs. 1 and 2B, the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include:

a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain; and a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

wherein the curtain has a first vertical framing member secured thereto at a forward position on the vehicle curtain and a second vertical framing member removably secured thereto at a rear position on the vehicle curtain, the forward position being forward of the rear position when the vehicle travels in a forward direction,

wherein each vehicle curtain clip is welded or melted to the curtain at a location of one of the plurality of curtain reinforcing straps.

The clips may be clips of the first option of the first aspect of the invention.

Preferably the first vertical framing member comprises a slotted channel adapted to engage a keder bead provided on a vertical edge of a display panel.

The first vertical framing member may be fixed to the curtain by bonding, welding or melting to the curtain at a location of one of the plurality of curtain reinforcing straps.

Preferably the first vertical framing member is continuous and extends from the level of the upper row of vehicle curtain clips to the level of the lower row of vehicle curtain clips. The continuous framing member prevents airflow entering behind a display panel secured to the framing member.

Preferably the second vertical framing member comprises a slotted channel adapted to engage a keder bead provided on a vertical edge of a display panel.

The second vertical framing member may be fixed by any suitable removable fixing means, for example mutually engaging fasteners such as Dual-Lock™. Preferably at least a portion of the mutually engaging fasteners are secured to the curtain by bonding, welding or melting to the curtain at a location of one of the plurality of curtain reinforcing straps.

In a third option of the second aspect, of which one illustrative example is illustrated in Figs. 1 E and 2B, the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include: a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain; and

a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

wherein the curtain has a first vertical framing member secured thereto at a forward position on the vehicle curtain and a second vertical framing member removably secured thereto at a rear position on the vehicle curtain, the forward position being forward of the rear position when the vehicle travels in a forward direction,

wherein each vehicle curtain clip includes a frame member having an aperture, the frame member being welded or melted to the curtain at a location between or distal from one or more of the plurality of curtain reinforcing straps, the frame member forming an eyelet in the curtain and the clip having a clip body which is engaged in the eyelet.

The clips may be clips of the first option of the first aspect of the invention.

The clip may include a retaining flange extending at least partially, preferably completely, around the clip body, the flange being sufficiently stiff to prevent the clip body passing through the aperture.

The frame member may be of a material which is more flexible than the material of the clip body, for example a soft PVC material.

The aperture of the frame member may be substantially rectangular in shape.

The clip body may have a thickness sufficient for the slotted channels to project beyond a front side of the frame member when the clip body is engaged in the aperture and the retaining flange which extends around the clip body is engaged against a rear side of the frame member.

The clip body may include detent means adapted to engage with corresponding detent means in the frame member to hold the clip body in the aperture of the frame member. Alternatively the clip may include other fastening means to secure the clip to the frame member so as to hold the clip body in the aperture of the frame member. Alternatively the clip body and aperture may be sized to provide an interference fit to hold the clip body in the aperture of the frame member.

Preferably the first vertical framing member comprises a slotted channel adapted to engage a keder bead provided on a vertical edge of a display panel.

The first vertical framing member may be fixed to the curtain by bonding, welding or melting to the curtain at a location of one of the plurality of curtain reinforcing straps.

Preferably the first vertical framing member is continuous and extends from the level of the upper row of vehicle curtain clips to the level of the lower row of vehicle curtain clips. The continuous framing member prevents airflow entering behind a display panel secured to the framing member.

Preferably the second vertical framing member comprises a slotted channel adapted to engage a keder bead provided on a vertical edge of a display panel.

The second vertical framing member may be fixed by any suitable removable fixing means, for example mutually engaging fasteners such as Dual-Lock™. Preferably at least a portion of the mutually engaging fasteners are secured to the curtain by bonding, welding or melting to the curtain at a location of one of the plurality of curtain reinforcing straps.

Third aspect

According to a third aspect of the present invention, there is provided a display panel attachment system for a curtain sided vehicle comprising:

a vehicle curtain;

a display panel having at least one keder bead provided on an edge of the display panel; and

a plurality of vehicle curtain clips,

wherein each vehicle curtain clip is secured to the vehicle curtain by bonding, melting or welding of either a clip body of the vehicle curtain clip or a frame member of the vehicle curtain clip, and secures the display panel to the curtain by receiving the keder bead in the clip. The plurality of vehicle curtain clips may comprise clips according to the first aspect of the invention.

The display panel may include apertures, and may be a mesh panel. Preferably the apertures allow the passage of air therethrough to equalise the pressure on each side of the display panel. This prevents flapping of the display panel relative to the vehicle curtain when the curtain sided vehicle travels at high speed.

Each vehicle curtain clip may include at least one slotted channel. Each slotted channel may comprise a channel and a slot opening into the channel.

The at least one keder bead provided on an edge of a display panel may be provided at each horizontal and/or vertical edge of the panel.

Preferably the or each keder bead has a diameter of less than 6 mm, most preferably between 4 mm and 6 mm. Such a bead size allows the keder bead to flex along its length with flexure of the vehicle curtain, while allowing the bead to be securely fastened within the vehicle curtain clips, thereby securely attaching the display panel to the vehicle curtain.

In a first option of the third aspect, of which one illustrative example is illustrated in Figs. 1 and 2A, the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include:

a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain;

a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

a plurality of vehicle curtain clips aligned vertically in a left side row on the vehicle curtain; and

a plurality of vehicle curtain clips aligned vertically in a right side row on the vehicle curtain,

wherein each vehicle curtain clip is welded or melted to the curtain at a location of one of the plurality of curtain reinforcing straps, and wherein each vehicle curtain clip receives a keder bead of the display panel inside one of the one or more slotted channels in the clip.

The clips may be clips of the first option of the first aspect of the invention.

Each clip may include a flange extending around the body and the flange may be welded or melted to the curtain.

Each clip may be fixed to the curtain such that the footprint of the clip is within the width of the curtain reinforcing strap. In other words, the clip does not extend substantially outside the area of the curtain containing the curtain reinforcing strap.

In an alternative to the first option of the third aspect the vehicle curtain clips include: a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain;

a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

a plurality of vehicle curtain clips aligned vertically in a left side row on the vehicle curtain; and

a plurality of vehicle curtain clips aligned vertically in a right side row on the vehicle curtain,

wherein each vehicle curtain clip includes a frame member which is welded or melted to the curtain to form an eyelet in the curtain, and

wherein each vehicle curtain clip includes a clip body which is engaged in an aperture of the frame member and receives a keder bead of the display panel inside one of the one or more slotted channels in the clip.

The clip may be of moulded PVC or other suitable moulded plastic material. The curtain may be of PVC. Preferably the PVC has a Vicat softening point measured according to EN ISO 306 B50 of below 100°C, more preferably below 80°C.

In a second option of the third aspect, of which one illustrative example is illustrated in Figs. 1 and 2B, the curtain includes a plurality of curtain reinforcing straps, and the vehicle curtain clips include: a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain; and

a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

wherein the curtain has a first vertical framing member secured thereto at a forward position on the vehicle curtain and a second vertical framing member removably secured thereto at a rear position on the vehicle curtain, the forward position being forward of the rear position when the vehicle travels in a forward direction,

wherein either each vehicle curtain clip is welded or melted to the curtain at a location of one of the plurality of curtain reinforcing straps or each vehicle curtain clip includes (a) a frame member which is welded or melted to the curtain to form an eyelet in the curtain and (b) a clip body which is engaged in an aperture of the frame member,

wherein each vehicle curtain clip receives a keder bead of the display panel inside one of the one or more slotted channels in the clip, and wherein each of the first and second vertical framing members comprises a slotted channel which receives a keder bead provided on a vertical edge of the display panel.

The clips may be clips of the first option of the first aspect of the invention.

The first vertical framing member may be fixed to the curtain by bonding, welding or melting to the curtain, optionally at a location of one of the plurality of curtain reinforcing straps.

Preferably the first vertical framing member is continuous and extends from the level of the upper row of vehicle curtain clips to the level of the lower row of vehicle curtain clips. The continuous framing member prevents airflow entering behind a display panel secured to the framing member.

The second vertical framing member may be fixed by any suitable removable fixing means, for example mutually engaging fasteners such as Dual-Lock™. Preferably at least a portion of the mutually engaging fasteners are secured to the curtain by bonding, welding or melting to the curtain at a location of one of the plurality of curtain reinforcing straps. In a third option of the third aspect, of which one illustrative example is illustrated in Figs. 3, 5 and 6, the vehicle curtain clips are vehicle curtain clips according to the first embodiment and include:

a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain;

a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

a plurality of vehicle curtain clips aligned vertically in a left side row on the vehicle curtain; and

a plurality of vehicle curtain clips aligned vertically in a right side row on the vehicle curtain,

wherein each vehicle curtain clip receives a keder bead of the display panel inside one of the plurality of slotted channels in the clip.

The clips may be clips of the first option of the first aspect of the invention.

The vehicle curtain clips of the upper and lower rows may be bonded to the vehicle curtain by an adhesive. The vehicle curtain clips of the upper and lower rows may be bonded to the vehicle curtain by hot melting or heat welding.

At least some of the vehicle curtain clips of the left and right rows may be detachably secured to the vehicle curtain, preferably by a reclosable fastener.

The reclosable fastener may comprise two mutually cooperating mushroom headed fasteners, the two fasteners being bonded to the vehicle curtain and the back surface of the vehicle curtain clip respectively.

The lowest vehicle curtain clip of each of the left and right rows may be bonded to the vehicle curtain by an adhesive, while the remaining vehicle curtain clips of the left and right rows may be detachably secured to the vehicle curtain, preferably by a reclosable fastener. The display panel may be substantially rectangular in shape, and may have upper and lower horizontal edges and left and right vertical edges each provided with a keder bead.

The display panel may be substantially octagonal in shape, and may have upper and lower horizontal edges and left and right vertical edges each provided with a keder bead, and four diagonal edges each extending from a vehicle curtain clip of the upper or lower row to a vehicle curtain clip of the left or right row. Preferably the diagonal edges are not provided with a keder bead.

In a fourth option of the third aspect, of which one illustrative example is illustrated in Figs. 4, 5, 6 and 7, the vehicle curtain clips include:

a plurality of vehicle curtain clips aligned horizontally in an upper row on the vehicle curtain;

a plurality of vehicle curtain clips aligned horizontally in a lower row on the vehicle curtain;

a plurality of vehicle curtain clips aligned vertically in a left side row on the vehicle curtain; and

a plurality of vehicle curtain clips aligned vertically in a right side row on the vehicle curtain,

wherein each vehicle curtain clip in the upper and lower rows receives a keder bead of the display panel inside one of the plurality of slotted channels in the clip, and wherein each vehicle curtain clip in the left and right rows receives a keder bead of the display panel either inside one of the plurality of slotted channels or inside the resilient serrated slot of the clip.

The clips may be clips of the second or third option of the first aspect of the invention.

In a preferred embodiment each vehicle curtain clip a first row of the left and right rows receives a keder bead of the display panel inside one of the plurality of slotted channels of the clip and a second row of the left and right rows receives a keder bead of the display panel inside the resilient serrated slot of the clip. The first row may be at the forward end of the display panel, while the second row may be at the rear end of the display panel, so that the forward edge of the display panel, which may be subject to substantial aerodynamic forces tending to pull the forward edge out of the clips while the vehicle is travelling, is held securely by engagement of the keder bead in the slotted channels.

The vehicle curtain clips may be bonded to the vehicle curtain by an adhesive. The vehicle curtain clips may be bonded to the vehicle curtain by hot melting or heat welding.

The planar back surface of each vehicle curtain clip may be bonded to the vehicle with a high strength bonding tape or other suitable adhesive.

The display panel may be substantially rectangular in shape, and may have upper and lower horizontal edges and left and right vertical edges each provided with a keder bead.

The display panel may be substantially octagonal in shape, and may have upper and lower horizontal edges and left and right vertical edges each provided with a keder bead, and four diagonal edges each extending from a vehicle curtain clip of the upper or lower row to a vehicle curtain clip of the left or right row. Preferably the diagonal edges are not provided with a keder bead.

Fourth aspect

According to a fourth aspect of the present invention, there is provided a

substantially rectangular display panel for a curtain sided vehicle, for use with the display panel attachment system of the third aspect, the display panel having an upper edge, a lower edge and two side edges, and having a keder bead provided on each of the upper edge and the lower edge, wherein the or each keder bead is of a resilient material, preferably natural or synthetic rubber or resilient plastic material, and has a diameter of less than 6 mm, most preferably between 4 mm and 6 mm. Such a bead size allows the keder bead to flex along its length with flexure of the vehicle curtain, while allowing the bead to be securely fastened within the vehicle curtain clips, thereby securely attaching the display panel to the vehicle curtain.

Preferably the display panel has a keder bead provided on each side edge, wherein the or each keder bead is of a resilient material, preferably natural or synthetic rubber or resilient plastic material, and has a diameter of less than 6 mm, most preferably between 4 mm and 6 mm.

The display panel may include apertures, and may be a mesh panel. Preferably the apertures allow the passage of air therethrough to equalise the pressure on each side of the display panel. This prevents flapping of the display panel relative to the vehicle curtain when the curtain sided vehicle travels at high speed.

Preferably the display panel is a woven mesh. Preferably the display panel is of plastic material. Preferably the display panel has a flexibility at least as flexible as the vehicle curtain to which it is to be fixed.

Brief Description of the Drawings

The invention will be described, by way of example only, with reference to the drawings in which:

Figs. 1A, 1 B and 1C show front, rear and sectional views of a vehicle curtain clip according to a first embodiment of the present invention;

Fig. 1 D shows a front view of another vehicle curtain clip according to a first embodiment of the present invention;

Figs. 1 E, 1 F and 1 G show perspective views of two components of another vehicle curtain clip according to a first embodiment of the present invention and a partial cross-sectional view through the assembled components respectively;

Fig. 2A shows a front view of a poster attachment system for a curtain sided vehicle with a display panel affixed to the curtain by the clips of Fig. 1 ; Fig. 2B shows a front view of a another poster attachment system for a curtain sided vehicle with a display panel affixed to the curtain by the clips of Fig. 1 ;

Fig. 3 shows a sectional view of a vehicle curtain clip according to a second embodiment of the present invention;

Fig. 4 shows a sectional view of a vehicle curtain clip according to a third

embodiment of the present invention;

Fig. 5 shows a front view of a poster attachment system for a curtain sided vehicle with a rectangular display panel affixed to the curtain by the clips of Fig. 3 or 4;

Fig.6 shows a front view of a poster attachment system for a curtain sided vehicle with an octagonal display panel affixed to the curtain by the clips of Fig. 3 or 4; and

Fig. 7 shows a vehicle curtain clip according to a variation of the third embodiment of the invention.

Detailed Description of the Drawings

With reference to Figs. 1A, 1 B and 1C, there is shown a vehicle curtain clip 10 according to a first embodiment of the present invention. The clip 10 is moulded from PVC or other suitable plastic. The clip comprises a body 12 which has a uniform sectional profile in an axial direction. The body 12 has a plurality of slotted channels 14 which each extend through the body in a direction parallel to the axial direction.

The clip 10 has a substantially planar back surface 20 adapted to be bonded to a vehicle curtain. In the illustrated example there are two slotted channels 14, although there may be more or fewer. Each slotted channel 14 is formed such that it can receive a keder bead provided on an edge of a display panel, and comprises a channel 16 and a slot opening 18. In the illustrated embodiment, each channel 16 has a circular cross-sectional profile, and the slotted channels 14 are arranged adjacent to each other, such that the slot openings 18 of the slotted channels 14 are coplanar. However, the cross-sectional profile of the channel 16 and slotted opening 18 may be different.

The clip 10 includes a flange 50 extending around the body 12 on all four sides. The planar back surface 20 extends over the flange 50 so that the clip 10 can be placed on a curtain 250 (shown in Fig. 2) having a plastic coating, and heat can be applied to the flange 50 to at least partially melt the material on the planar back surface 20 and/or the plastic coating of the curtain 250 to bond the clip 10 to the curtain 250.

The body 12 includes a base wall portion 22 from which the flange 50 extends and a resilient cantilevered wall portion 24 spaced from the base wall portion 22. Each of the slotted channels 14 includes a first wall portion 22A which is part of the base wall portion 22 and an opposed second wall portion 24A which is part of the cantilevered wall portion 24. A web portion 26 of the clip, from which the cantilevered wall portion 24 is cantilevered, joins the cantilevered wall portion 24 to the base wall portion 22.

The cantilevered wall portion 24 includes a retaining rib 30 which extends parallel to the slotted channels 14 distal from the web 26. The rib 30 in the example has a bulbous shape in cross-section. It extends directly below the lower slot opening 18, so that a display panel held in the clip 10 is deflected around a retaining surface 32 provided on the side of the retaining rib 30 closest to the base wall portion 22. In Fig. 1 C the resilient cantilevered wall portion 24 is shown in an undeformed state, and the retaining surface 32 adopts a position substantially coplanar with the plane of the base wall portion 22. However the clip 10 can be urged open by pulling the cantilevered wall portion 24 away from the base wall portion 22, to enlarge the slot openings 18 and to provide a greater spacing between the retaining rib 30 and the base wall portion 22, thereby allowing a keder bead of a display panel to be pushed into one or other of the slotted channels 14. The retaining rib 30 has a chamfered end 34 allowing easy threading of the edge of a display panel into the clip 10 from the side. In the illustrated example the retaining rib 30 is at least partially hollow, to save weight, but it can be a solid moulded part.

The base wall portion 22 has an aperture 36 arranged to extend over the area of the retaining rib 30, so that when the cantilevered wall portion is undeformed the retaining rib 30 is not in contact with the base wall portion 22. However the aperture 36 can be of any suitable shape, to save weight, or can be omitted. The clip is preferably no more than 50 mm wide so that it can be bonded or heat welded to a vehicle curtain within the extent of the strap of the vehicle curtain, which is typically 50 mm wide.

Fig. 1 D shows a vehicle curtain clip 10 similar to that shown in Figs. 1A, 1 B and 1C, and the same components are not further described. It differs in that the flange 50 has two lugs 52 at the upper and lower edges 54, 56 of the clip 10. The lugs 52 are moulded from the same material, for example PVC or other suitable plastic, but have a thickness significantly less than the thickness of the flange 50. Typically the flange 50 may be 3 to 5 mm thick, while the lugs 52 are typically less than 2 mm, preferably between 0.5 mm and 1.5 mm thick, most preferably about 1 mm thick. It has been found that the thinner lugs 52 are more readily bonded to the PVC vehicle curtain to which they are fixed by welding or melting. In particular the lugs 52 provide a longer edge than the flange 50, so that a longer length of joint may be obtained.

The number and shape of the lugs 52 is not limited to the number and shape illustrated in Fig. 1 D. However it is preferable if the lugs are provided only on the upper and lower edges 54, 56 of the clip 50, so that the welding or bonding takes place within the extent of the strap of the vehicle curtain, which is typically 50 mm wide, and the overall width of the clip 50 is not greater than about 50 mm.

Referring to Figs. 1 E and 1 F, there are shown two components 10A, 10B of another vehicle curtain clip 10 according to the invention. The first component 10A comprises a clip body 12A moulded from a relatively rigid PVC or other suitable plastic. The clip body 12A has a uniform sectional profile in an axial direction. The body 12A has a plurality of slotted channels 14 which each extend through the body in a direction parallel to the axial direction. The second component 10B is a frame member 160 which has a through aperture 162 whose shape and size corresponds to the shape and size of the clip body 12A. The frame member 160 includes a flange 164 which in the illustrated example extends all the way around the flame.

The frame member 160 may be heat welded or melted to a PVC curtain 84 of a curtain-sided vehicle in a known manner, thereby forming an eyelet in the curtain 84. Typically the frame member 160 is of a material which is softer of more flexible than the material of the clip body 12, for example a soft PVC material. The flange 164 is sufficiently flexible such that it can flex with the curtain 84, while the frame 160 itself is of sufficient thickness that it does not distort in shape.

Fig. 1 G is a cross-sectional view through an aperture in the curtain 84 after the frame member 160 has been heat bonded to the curtain and the aperture formed in the curtain, either before, during or after the heat bonding process,

The clip body 12A is of a size and shape to engage in the aperture 162 of the frame member 160, in a plug and socket relationship. The clip body 12A includes a retaining flange 12B extending at least partially, preferably completely, around the clip body 12A. The retaining flange 12B is sufficiently stiff to prevent the clip passing right through the aperture when the clip body is pulled, for example by attachment of a panel.

In this example the aperture 162 of the frame member 160 is substantially rectangular in shape, to match the substantially rectangular shape of the plug portion 12C of the clip body 12A, but any suitable corresponding shape may be used for the aperture 162 and the plug portion 12C.

The plug portion 12C of the clip body 12A has a thickness sufficient for the slotted channels 14 to project beyond the front side 166 of the frame member 160 when the clip body 12A is engaged in the aperture 162 and the retaining flange 12B is engaged against the rear side 168 of the frame member 160.

The clip body include detent means 170 adapted to engage with corresponding detent means 170 in the frame member to hold the clip body 12A in the aperture 162 of the frame member 160. The detent means 170 are omitted from Figs. 1 E and 1 F for clarity, but are shown as latch portions 170 in Fig. 1 G. Any suitable detent means or fastening means may be used to secure the clip body 12A in the frame member 160. Alternatively the clip body 12A and aperture 162 may be sized to provide an interference fit to hold the clip body 12A in the aperture 162. Alternatively a suitable adhesive may be used.

The clip 10 having two components 10A, 10B offers a number of advantages. It can be affixed to any part of a vehicle curtain, not just the reinforcing straps, thereby offering more freedom in the positioning of a display panel, and it uses a known fastening method. It is well known to form eyelets in a vehicle curtain, for completely different purposes, by heat bonding a frame member similar to the frame member 160 illustrated in Fig. 1 F. The heat bond is formed between two flexible materials, i.e. the curtain 84 and the frame member 160, while the rigid component 10A is held by a mechanical fixing, i.e. a plug and socket connection.

Curtains can be premanufactured with the frame members 160 already in place.

The apertures 162 in the frame members 160 can be closed with a semi-permanent plug member (not illustrated) if it is not required to use the display panel attachment clips on the curtain for a period of time. The plug members can be removed and replaced by clip body components 12A when a user wishesto attach a display panel to the curtain.

The clip 10 having two components 10A, 10B can be used in any or all of the display panel attachment systems described hereafter instead of the single component clip described herebefore. However the clip 10 having two components 10A, 10B does not have to be installed at the location of a reinforcing strap in the vehicle curtain, and can be used at any location on the vehicle curtain, for example between two adjacent reinforcing straps.

Referring now to Fig. 2A, there is shown a display panel attachment system 80 for a curtain sided vehicle 82 according to an embodiment of the present invention. The attachment system 80 comprises a vehicle curtain 84 which is secured to a curtain sided vehicle 82 by a plurality of straps 86, in the known manner. The curtain 84 is typically of fabric coated with a plastic, such as PVC, and the straps 86, which are also of fabric, are also coated with plastic. The attachment system 80 also includes a display panel 88 and a plurality of vehicle curtain clips 10 as illustrated in Fig. 1. The display panel 88 is a sheet of any suitable material, for example a plastic film or a mesh fabric, having a keder bead 90 on each edge. The back surface 20 of each vehicle curtain clip 10 is secured to the curtain 84 such that each vehicle curtain clip 10 can receive the keder bead 90 provided on the corresponding edge of the display panel 88 to secure the display panel 88 to the vehicle curtain 84. A plurality of clips 10 are aligned horizontally with the slotted channels extending horizontally in an upper row 92 and in a lower row 94. A further plurality of clips 10 are aligned vertically with the slotted channels extending vertically in a left hand row 96 and in a right hand row 98.

Each clip 10 is secured to the curtain 84 at the location of a strap 86, so that any load transferred from the display panel 88 to the vehicle is taken by the straps. Typically the flange 50 of each clip 10 is heat bonded to the curtain 84 by sonic welding or local application of heat, so that the plastic material of the curtain 84 and the plastic material of the clip 10 are fused or melted together. This provides a very strong connection, so that the clips 10 can remain on the curtain 84 for the life of the curtain and can be reused multiple times to install a display panel 88 to the curtain 84.

A user can install the display panel 88 to the curtain 84 by threading the keder bead 90 of the display panel 88 through the slotted channels 14 of the clips 10 of the upper row 92, until the display panel 88 hangs from the clips 10 of the upper row 92. The keder bead 90 at the lower edge of the display panel 88 is then pushed into the gap between the rib 30 and the base wall portion 22 of the clips 10 of the lower row 94, to hold the lower keder bead 90.

The panel 88 is tensioned vertically by pushing the keder bead as far as possible into the slotted channels 14 of the clips 10 of the lower row 94, to engage the furthest possible slotted channel 14. The resilience of the clip 10 then holds the keder bead 90 in the slotted channel 14.

Finally the keder bead 90 at each of the left and right edges of the display panel 88 is then pushed into the gap between the rib 30 and the base wall portion 22 of the clips 10 of the left row 96 and right row 98 respectively, to hold the corresponding keder bead 90. The panel 88 may be tensioned horizontally by pushing the keder bead as far as possible into the slotted channels 14 of the clips 10 of the left and right rows 96, 98, to engage the furthest possible slotted channel 14. The resilience of the clip 10 then holds the keder bead 90 in the appropriate slotted channel 14. As an alternative, in the first step the user can install the display panel 88 to the curtain 84 by threading the upper and lower keder beads 90 of the display panel 88 simultaneously through the slotted channels 14 of the clips 10 of the upper row 92 and lower row 94 respectively. When the display panel is fully threaded, the panel 88 can be tensioned vertically by pushing the keder bead as far as possible into the slotted channels 14 of the clips 10 of the lower row 94, as described above.

With reference to Fig. 2B, there is shown a further display panel attachment system 80’ for a curtain sided vehicle according to an embodiment of the present invention. The vehicle 82 and vehicle curtain 84 are not shown in Fig. 2B, but are the same as those shown in Fig. 2A. The attachment system 80’ also includes a display panel 88 and a plurality of vehicle curtain clips 10 as illustrated in Fig. 1. The display panel 88 is a sheet of any suitable material, for example a plastic film or a mesh fabric, having a keder bead 90 on each edge. The back surface 20 of each vehicle curtain clip 10 is secured to the curtain 84 such that each vehicle curtain clip 10 can receive the keder bead 90 provided on the corresponding edge of the display panel 88 to secure the display panel 88 to the vehicle curtain 84.

A plurality of clips 10 are aligned horizontally with the slotted channels extending horizontally in an upper row 92 and in a lower row 94. However instead of vertically aligned clips 10 at the front 190 and rear 192 edges of the panel 88, the vehicle curtain 84 has a first vertical framing member 180 secured thereto at a forward position and a second removable vertical framing member 182 secured to the curtain at a rear position by mutually engaging fasteners 184. The arrows 186 indicate the direction of airflow relative to the vehicle 82 and panel 88 when the vehicle 82 is moving forwards.

Each vehicle curtain clip 10 is welded or melted to the curtain 84 at a location of one of the plurality of curtain reinforcing straps 86.

The first vertical framing member 180 comprises a slotted channel adapted to engage the keder bead 90 provided on the forward vertical edge 190 of the display panel 88. Typically the framing member 180 is formed of extruded plastic and is fixed to the curtain 84 by bonding, welding or melting at a location of one of the plurality of curtain reinforcing straps 86. Because the first vertical framing member 180 is continuous and extends from the level of the upper row 92 of vehicle curtain clips 10 to the level of the lower row 94 of vehicle curtain clips 10, the framing member 180 prevents airflow entering behind the display panel 88, between the panel 88 and the curtain 84. This helps to keep the panel 88 against the curtain 84 and reduces relative flapping of the panel 88 and curtain 84.

The second vertical framing member 182 also comprises a slotted channel adapted to engage the keder bead 90 provided on the rear vertical edge 192 of the display panel 88. Typically the framing member 182 is formed of extruded plastic and is fixed to the curtain 84 by any suitable removable fixing means, for example mutually engaging fasteners 184 such as Dual-Lock™. One part of each pair of mutually engaging fasteners is secured to the curtain by bonding, welding or melting, preferably at the location of one of the plurality of curtain reinforcing straps, while the other part is secured to the rear of the framing member 182.

A user can install the display panel 88 to the curtain 84 by threading the keder bead 90 at the front edge 190 of the display panel 88 through the slotted channel of the front framing member 180. The keder beads 90 at the top and bottom of the display panel 88 art then threaded through the slotted channels of the clips 90 of both the upper row 92 and the lower row 94, until the display panel 88 is pulled flat. Finally the removable second framing member 182 is threaded onto the keder bead 90 at the front edge 190 of the display panel 88, and the removable second framing member 182 is pulled to tension the display panel 88 horizontally. The second framing member 182 is then pushed onto the vehicle curtain 84 so that the mutually engaging fasteners 184 engage with each other and secure the second framing member 182 to the vehicle curtain 84.

The display panel 88 is provided with a keder bead 90 on all four edges. Each keder bead is of a resilient material, preferably natural or synthetic rubber or resilient plastic material, and has a diameter of less than 6 mm, most preferably between 4 mm and 6 mm. This is significantly smaller than conventional keder beads. The inventor has found that by using a small flexible keder bead 90 in the display panel, the display panel 88 can flex with the vehicle curtain 84, so the vehicle curtain can be opened and closed in the normal way, to provide access to the interior of the vehicle. The inventor has thus overcome the problem of providing a replaceable display panel system on a curtain sided vehicle which still allows full use of the vehicle curtain while the display panel is installed, and which allows the display panel to be changed, for example to suit the branding of different users of the trailer, or to provide different advertising campaigns.

Preferably the display panel includes apertures therein, to allow the passage of air therethrough to equalise the pressure on each side of the display panel. This prevents flapping of the display panel relative to the vehicle curtain when the curtain sided vehicle travels at high speed. The inventor has found that a woven mesh is effective in this regards.

With reference to Fig. 3, there is shown in section a vehicle curtain clip 10’ according to a second embodiment of the present invention. The clip 10’ typically has a length substantially equal to the width illustrated in Fig. 3. The clip 10’ is formed of an extruded body 12’ which has a uniform sectional profile in an axial direction. The extruded body 12’ may be formed of any suitable extrudable material such as PVC or aluminium. The extruded body 12’ has a plurality of slotted channels 14’ which each extend through the body in a direction parallel to the axial direction.

The body 12’ further comprises a substantially planar back surface 20’ which is adapted to be adhesively bonded to a vehicle curtain. If the body 12’ is formed of PVC and the vehicle curtain is also formed of PVC a very strong bond between the body and the vehicle curtain can be affected by using an adhesive selected for use with PVC, for example a polyurethane adhesive or an epoxy adhesive. Alternatively, the back surface 20’ of the body 12’ may be secured to the vehicle curtain with a reclosable fastener. The reclosable fastener may be a two part cooperating mushroom fastener such as Dual Lock™ sold by 3M ® with one part located on the vehicle curtain and the other part located on the back surface of the clip 10’. High strength bonding tape such as VHB™ tape sold by 3M ® can also be used to bond the back surface 20’ to the vehicle curtain. In another example of the invention, the back surface 20’ of the body 12’ may be secured to the vehicle curtain by hot welding. In one embodiment the body 12’ may be made of a flexible synthetic rubber material which is partially melted at the back surface 20’ to adhere it to the curtain, The curtain itself may be partially melted too, to ensure an even stronger adhesion.

Each slotted channel 14’ is formed such that it can receive a keder bead provided on an edge of a display panel, and comprises a channel 16’ and a slot opening 18’. In the illustrated embodiment, each channel 16 has a circular cross-sectional profile. However, the cross-sectional profile of the channel 16’ and slotted opening 18’ may be different. For example, the channel 16’ may have a triangular cross-sectional profile. The slotted channels 14’ are arranged adjacent to each other and the slots 18’ of the slotted channels 14’ extend into openings 22’ in a front surface 24’ of the body 12’. In the illustrated embodiment, the openings 22’ of the slotted channels 14’ are stepped relative to the back surface 20’. Each slotted channel 14’ extends at an angle to the back surface 20’ of less than 90 degrees to make it easier for a user to thread the keder bead through the slotted channel 14’. In the illustrated embodiment, the clip 10’ also includes a plurality of stepped portions 26’, which are stepped relative to the back surface 20’.

Referring now to Fig. 4, there is shown a vehicle curtain clip 100 according to a third embodiment of the present invention. The vehicle curtain clip 100 comprises a planar back surface 120, and an extruded body 112 as previously described with reference to Fig. 3. In this embodiment, the slotted channels 116 are arranged such that they are adjacent to each other and coplanar, and in an array of parallel channels 116. The plurality of slotted channels 116 may only include a first 130 and a second channel 132. The first and the second channels 130, 132 are arranged such that they are in communication with one another such that a web provided on an edge of the display panel extends through the slot 116 of the first channel, and through the second channel 132. However, in the illustrated embodiment, the extruded body 112 includes a third channel 134, and the first, second and third channels 130, 132, 134 are arranged such that they are in communication with one another such that a web provided on an edge of the display panel extends through the slot 116 of the first channel 130, through the second channel 132, and through the third channel 134. In the illustrated embodiment, the third channel 134 is in communication with an opening 136 of the clip 100, and the clip 100 includes a serrated slot 138 between the third channel 134 and the opening 136. The serrated slot 138 is resilient and adapted to hold a keder bead provided on an edge of a display panel. In the illustrated embodiment, the serrated slot 138 is coplanar with the channels 130, 132 and 134.

The clip 100 may also include a recess 140 located on the front surface 124 of the body 112. The recess 140 extends across the front surface of the body 124 parallel to the slotted channels 116. The recess 140 provides a channel for water on the vehicle curtain to flow down the curtain.

Referring now to Figs. 5 and 6, there is shown a display panel attachment system for a curtain sided vehicle 200 according to another embodiment of the present invention. The attachment system 200 comprises a vehicle curtain 250 which is secured to a curtain sided vehicle 252 by a plurality of straps 254. The attachment system 200 also includes a display panel 256, 350 and a plurality of vehicle curtain clips 258, which may be curtain clips 10, 10’, 100 described above with reference to Figs. 1 , 3 or 4. The back surface of each vehicle curtain clip 258 is secured to the curtain 250 such that each vehicle curtain clip can receive a keder bead 255 provided on an edge of the display panel 256 to secure the display panel 256, 350 to the vehicle curtain.

In the embodiment of Fig. 5, the attachment system 200 comprises a plurality of vehicle curtain clips 254 aligned horizontally in an upper row 260 on the vehicle curtain 250; a plurality of vehicle curtain clips 258 aligned horizontally in a lower row 262 on the vehicle curtain 252; a plurality of vehicle curtain clips aligned vertically in a right row 266 on the vehicle curtain 250; and a plurality of vehicle curtain clips aligned vertically in a left row 264 on the vehicle curtain 252. In this embodiment, each vehicle curtain clip 258 receives the keder bead 255 of the display panel 256 inside one of its slotted channels. The clips 258 of the upper and lower rows 260, 262 may be bonded to the vehicle curtain 250 with an adhesive and the clips of the left and right rows 264, 266 may be bonded to the vehicle curtain with a reclosable fastener as described above. This allows the user to thread the keder bead of the display panel 256, 350 through the slotted channels of the clips 258 of the upper and lower rows 260, 262 securing the display panel to the vehicle curtain 250 along its horizontal edges, and then to secure the display panel 256 to the vehicle curtain along its vertical edges. The clip 258 lowest in height of each of the left and right rows 264, 266 may be bonded to the vehicle curtain 250 with an adhesive while the other clips in the left and right rows may be bonded to the curtain with reclosable fastener. This speeds up the assembly process of the attachment system 200 for the user.

In the embodiment of Fig. 5, the display panel 256 is substantially rectangular in shape and has horizontal and vertical edges which are each provided a strip of keder bead 255, which can be secured to the vehicle curtain clips 258. However, as shown in the embodiment of Fig. 6, the display panel 256 may instead be octagonal in shape. The octagonally shaped display panel 350 has upper and lower horizontal edges 351 , 352 and left and right vertical edges 354, 356, which are each provided with a keder bead 255. The octagonally shaped display panel 350 also has four diagonal edges 360 each extending from a vehicle curtain clip 258 of the upper or lower row 260, 262 to a vehicle curtain clip of the left or right row 264, 266. The octagonal shape of the panel 350 prevents the display panel from flapping when the vehicle 252 is moving.

In an alternative embodiment of the vehicle attachment system 200, the clips 258 used in the upper, lower, left and right rows 260, 262, 264, 266 are all according to the third embodiment of the vehicle curtain clip 100 as described above and illustrated in Fig. 4. In this embodiment, the upper, lower, left and right rows 260,

262, 264, 266 may all be bonded to the vehicle curtain 250 with adhesive or high strength adhesive tape such as VHB tape sold by 3M, or may be hot welded or bonded by heat and/or melting.

The slotted channels 116 of the clips 258 of the upper and lower rows 260, 262 receive the keder bead 255 provided on each horizontal edge of the display panel 256. The keder bead 255 provided on each vertical edge of the display panel 256 is held by the resilient serrated slot of each clip 258 of the left and right rows 264, 266.

In this embodiment, the display panel 256, 350 may be a rectangular panel 256 or an octagonal panel 350, as described for the first embodiment of the poster attachment system. It should be understood that it is only a preferred feature of the second embodiment of the display panel attachment system 200 that the clips 258 are all according to the third embodiment of the vehicle curtain clip 100 described above. The upper and lower rows 260, 262 may comprise clips 258 according to the first or second embodiments of the vehicle curtain clip 10, 10’ described above.

In another embodiment of the invention, clips 100 as described above and illustrated in Fig. 4 are arranged in the clip positions 258 illustrated in Figs. 5 or 6. The slotted channels 116 of the clips 258 of the forward vertical row 266 of clips 258 on the curtain 250, which is the vertical row to the right of Figs. 5 and 6, receive the keder bead 255 provided on the forward vertical edge of the display panel 256. This can be achieved by feeding the keder bead upwards through each of the slotted channels 116 in turn.

The slotted channels 116 of the clips 258 of the upper and lower rows 260, 262 then receive the keder beads 255 provided on the upper and lower horizontal edges of the display panel 256. This is achieved by simultaneously feeding the upper and lower keder beads 255 horizontally through each of the slotted channels 116 of the upper and lower rows 260, 262 respectively, in turn. The particular slotted channels 116 are selected to ensure that the display panel 256 is tensioned vertically. The provision of a plurality of slotted channels 116 in each clip 100 allows a tolerance on the overall dimensions of the panel 256.

The keder bead 255 provided on the rearward vertical edge of the display panel 256 is held by the resilient serrated slot 138 of each clip 258 of the rearward vertical row 264 of clips. This is achieved by pushing the keder bead 255 into the open ends 136 of the serrated slots 138 and pushing the keder bead as far as it will go to tension the display panel 256 horizontally.

The clip 100’ illustrated in Fig. 7 is an alternative embodiment of the clip 100 illustrated in Fig. 4. In the embodiment of Fig. 7 the clip 100’ includes a flange 150 which extends around the entire body 112. The rear surface of the flange 150 is substantially co-planar with the planar back surface 120 of the clip (not shown in Fig. 5, but shown in Fig. 2). The flange 150 is of the same material 112 of the body, preferably of PVC, for example Hy-vin XA80207 provided by INEOS Compounds. The clip 100’ may be formed by moulding. In this embodiment the clip 100’ is bonded to the PVC curtain 250 by hot welding the flange 150 to the curtain 250. Because the flange 150 and curtain 250 are of the same material, the flange 150 and curtain 250 fuse together to form a strong bond. Heat can be applied locally to the flange, and the flange may be deformed by the heat, without risking deformation of the clip body 1 12.

The clip 100’ illustrated in Fig. 7 can be used in the display panel attachment system 80 illustrated in Fig. 2, or in the display panel attachment system 200 illustrated in Figs. 5 and 6.

A similar flange may be formed on the clip 10’ illustrated in Fig. 3 to assist fixing the clip 10’ to a curtain 250.

Because the vehicle curtain clip comprises a plurality of slots, the tension across the display panel may be altered by changing which slot the keder bead is threaded through in each slot of the plurality of the curtain clips. In addition, the plurality of slots gives the user more flexibility to adjust for different sizes of display panels.

If the vehicle curtain is formed of PVC, because the vehicle curtain clip may be formed of PVC, a very strong bond may be formed between the clip and the curtain.

Because the each of the slotted channels may be stepped relative to the back surface, the display panel may be adjusted by the user such that it is as close as possible to the vehicle curtain.

Because each slot opening is at an angle of less than 90 degrees to the back surface, it is easier for a user of the clip to locate a keder bead inside each slotted channel.

Because the vehicle curtain clip may include a resilient serrated slot, all the vehicle curtain clips may be bonded with adhesive to the vehicle curtain, and there is no need for any of the vehicle curtain clips to be secured to the vehicle curtain with a reclosable fastener. This means that it is less likely that one of the vehicle curtain clips will detach from the vehicle curtain. Because the display panel may be an octagonal panel, the panel is prevented from flapping. In the first embodiment, if the panel has an octagonal shape, the reclosable fasteners in the left and right rows cannot be reached by a human, so they are anti- tamper proof.

In the first embodiment of the display panel attachment system, if the bottom fastener of the left and right row is bonded to the vehicle curtain, and if the reclosable fasteners located in the left and right rows fail, the reclosable fasteners simply slide down to the bottom fastener of the row bonded to the vehicle curtain, and do not fall off the vehicle.

The invention provides an easy way of rebranding a curtain sided vehicle, by fixing branded display panels to the sides of the curtain sided vehicle. The invention provides an easy way of fixing display panels of any size, simply by selecting an appropriate layout for the clips.

The invention is not limited to the specific embodiments described, and modifications and alternatives are possible. The shape, material and size of the various components can be modified.