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Title:
A SET OF PANELS, A METHOD FOR ASSEMBLY OF THE SAME AND A LOCKING DEVICE FOR A FURNITURE PRODUCT
Document Type and Number:
WIPO Patent Application WO/2019/125291
Kind Code:
A1
Abstract:
A method, a locking device and a set of panels (1), preferably for a furniture product, including a panel (2) and an adjacent panel (3), wherein the panel (2) includes a groove (21) and at least one hole (22) connected to the groove (21) via an opening (23), the adjacent panel (3) includes a first edge (31) that is configured to be arranged in the groove (21) of the panel (2), and the panel (2) includes a locking device (4) configured to lock the first edge (31) of the adjacent panel (3) in the groove (21) of the panel (2), wherein the locking device (4) includes a cylinder (41) and a lever (42) connected to the cylinder (41), the cylinder (41) is configured to be arranged in the hole (22) in the panel (2), the cylinder (41) is an eccentric cylinder (41) including a top and bottom base(43, 44) and a locking surface (45) connecting the top and bottom base (43, 44), the cylinder (41) is configured to act as a cam when the cylinder (41) is turned about an axis (A) in the hole (22), and the lever (42) is configured to, when turned, turn the cylinder (41) about the axis (A) between a mounting position and a locking position, wherein in the mounting position the first edge (31) of the adjacent panel (3) is free to be arranged in the groove (21) of the panel (2) and in the locking position a part (45a) of the locking surface (45) of the locking device (4) extend into the groove (21) through the opening (23) and lock the adjacent panel (3) in the groove (21).

Inventors:
DERELÖV, Peter (Lärkvägen 4 A, HELSINGBORG, 252 84, SE)
Application Number:
SE2018/051319
Publication Date:
June 27, 2019
Filing Date:
December 14, 2018
Export Citation:
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Assignee:
VÄLINGE INNOVATION AB (Prästavägen 513, VIKEN, SE-263 65, SE)
International Classes:
F16B12/20; F16B5/06; F16B21/02
Foreign References:
DE4229115A11993-03-04
EP0357129A11990-03-07
GB2163825A1986-03-05
CH705082A22012-12-14
DE19831936A11999-02-25
DE29924630U12004-05-13
DE19805538A11999-08-12
Attorney, Agent or Firm:
ENGSTRAND, Ola (Välinge Innovation AB, Prästavägen 513, VIKEN, SE-263 65, SE)
Download PDF:
Claims:
CLAIMS

1. A set of panels (1), preferably for a furniture product, comprising a panel (2) and an adjacent panel (3), wherein

the panel (2) comprises a groove (21) and at least one hole (22) connected to the groove (21) via an opening (23),

the adjacent panel (3) comprises a first edge (31) that is configured to be arranged in the groove (21) of the panel (2), and

the panel (2) comprises a locking device (4) configured to lock the first edge (31) of the adjacent panel (3) in the groove (21) of the panel (2), wherein the locking device (4) comprises a cylinder (41) and a lever (42) connected to the cylinder (41),

the cylinder (41) is configured to be arranged in the hole (22) in the panel

(2),

the cylinder (41) is an eccentric cylinder (41) comprising a top and bottom base (43, 44) and a locking surface (45) connecting the top and bottom base (43, 44),

the cylinder (41) is configured to act as a cam when the cylinder (41) is turned about an axis (A) in the hole (22), and

the lever (42) is configured to, when turned, turn the cylinder (41) about the axis (A) between a mounting position and a locking position, wherein

in the mounting position, the first edge (31) of the adjacent panel (3) is configured to be arranged in the groove (21) of the panel (2), and

in the locking position, a part (45a) of the locking surface (45) of the locking device (4) extend into the groove (21) through the opening (23) and lock the adjacent panel (3) in the groove (21).

2. The set of panels (1) according to claim 1, wherein the locking surface (45) of the cylinder (41) has a cross sectional snail, eccentric elliptic or egg shape.

3. The set of panels (1) according to claim 2, wherein the locking surface (45) of the cylinder (41) has a shape that is a combination of a snail, eccentric and/or egg shape.

4. The set of panels (1) according to any of the preceding claims, wherein the locking device (4) is arranged to, in the locking position, lock the adjacent panel (3) to the panel (2) by pressing it against a wall (24) of the groove (21).

5. The set of panels (1) according to any of the preceding claims, wherein the hole (22) is a circular hole, a circular segment (25) of the hole (23) extends into the groove (21) with the height (h) of the circular segment (25) and the chord (c) of the circular segment (25) define a width (w) of the opening (23).

6. The set of panels according to any of claims 4 or 5, wherein a largest diameter (dL) of the cylinder (41) is substantially equal to the diameter of the hole (dH).

7. The set of panels (1) according to any of the preceding claims, wherein, in the locking position, the part (45a) of the locking surface (45) extend through the opening (23) into the groove (21) with a length (hP) that is 5-25% of the largest diameter (dL) of the cylinder (41), preferably the length (hP) is 10-15% of the largest diameter (dL) of the cylinder (41).

8. The set of panels (1) according to claim 7, wherein the length (hP) in the radial direction of the cylinder that the part (45a) of the locking surface (45) extends into the groove (21) in the locking position substantially corresponds to the height (h) of the circular segment (25).

9. The set of panels (1) according to any of the preceding claims, wherein, in the mounting position, the cylinder (41) does not extend through the opening (23) into the groove (21).

10. The set of panels (1) according to any of claims 7-9, wherein of the length (hP) of the part (45a) of the locking surface (45) that extend into the groove (21) through the opening (23) is configured to gradually increase when the locking device (41) is moved from the mounting position to the locking position.

11. The set of panels (1) according to any of the preceding claims, wherein the locking surface (45) of the cylinder (41) comprise one or more ridges (46).

12. The set of panels (1) according to claim 11, wherein the one or more ridges (46) extend around at least a part of a circumference of the locking surface (45).

13. The set of panels (1) according to claim 11 or 12, wherein a height of the ridges (46) varies along its extension.

14. The set of panels (1) according to any of claims 11-13, wherein the one or more ridges (46) has a helical shape configured to press the adjacent panel (3) downwards when moving the locking device (4) from the mounting position to the locking position.

15. The set of panels (1) according to any of the preceding claims, wherein the adjacent panel (3) comprise a second hole (32) that is configured to be arranged at the opening (23) and to interact with the cylinder (41) to lock the adjacent panel (3) to the panel (2).

16. The set of panels (1) according to claim 15, wherein the locking surface (45) of the cylinder (41) comprise at least one ridge (47) that, in the locking position, is configured to be arranged at least partly in the second hole (32).

17. The set of panels (1) according to claim 16, wherein a edge of the ridge (47) has an inclined surface (48) that is configured to interact with a wall (33) of the second hole (32) to press the adjacent panel (3) downwards into the groove (21) of the panel (2).

18. The set of panels (1) according to any of the preceding claims, wherein the lever (42) is connected to the cylinder (41) at an inner end (42a) and at an outer end (42b) comprise a lock pin (49) that, in the locking position, is configured to be arranged in the groove (21) at a distance from the hole (22) and to lock the lever (42) from turning from the locking position towards the mounting position.

19. The set of panels (1) according to claim 18, wherein the locking device (4) is configured such that the outer end of the lever (42b) is, in the mounting position, arranged at a distance from the adjacent panel (3) and in the locking position adjacent, preferably in contact, with the adjacent panel (3).

20. The set of panels (1) according to claim 18 or 19, wherein the locking device (4) is configured such that the lever (42) extends, in the mounting position, in an essentially perpendicular direction or within the range of about 70° to about 110° from the adjacent panel (3).

21. The set of panels (1) according to any of the preceding claims, wherein the locking device (4) is configured to be moved between the mounting position and the locking position by turning the lever (42) and the cylinder (41) between 30°-180°, preferably between 90°-180°.

22. The set of panels (1) according to any of the preceding claims, wherein the panel (2) and the adjacent panel (3) is one of a bottom piece of a drawer, a frame and a back piece of a furniture product.

23. A locking device (4) for a furniture product in accordance with any of claims 1-22.

24. A method for assembly of a set of panels (1) in accordance to any of claims 1-22, comprising the step of:

a) inserting the cylinder (41) of the locking device (4) into the hole (22) of the panel

(2),

b) turning the lever (42) of the locking device (4) to position the locking device (4) in the mounting position,

c) inserting the first edge (31) of the adjacent panel (3) into the groove (21) of the panel (2), and

d) turning the lever (42) in a first direction to move the locking device (4) from the mounting position to the locking position to lock the first edge (31) of the adjacent panel (3) in the groove (21).

25. The method according to claim 24, the method comprise the further steps of

e) turning the lever (42) in a second direction to move the locking device (4) from the locking position to the mounting position to unlock the first edge (31) of the adjacent panel (3) in the groove (21), and

f) removing the first edge (31) of the adjacent panel (3) from the groove (21) of the panel (2).

Description:
A set of panels, a method for assembly of the same and a locking device for a furniture product

TECHNICAL FIELD

Embodiments of the present invention relate to panels that may be arranged perpendicular to each other and locked together with a mechanical locking device. The panels may be assembled and locked together to obtain a furniture product, such as a bookshelf, a cupboard, a wardrobe, a box, a drawer or a furniture component.

BACKGROUND ART

A furniture product provided with a mechanical locking device is known in the art, as disclosed in WO 2014/072080. The furniture product comprises a first panel connected perpendicular to a second panel by a mechanical locking device comprising a flexible tongue in an insertion groove and a pin that is inserted into the mechanical locking device to move the flexible tongue.

Embodiments of the present invention address a need to provide an easier assembling and/or an increased locking strength of the panels.

SUMMARY OF THE INVENTION

It is an object of at least certain embodiments and aspects of the present invention to provide an improvement over the above described techniques and known art.

A further object of at least certain aspects of the present invention is to facilitate assembling of panels configured to be assembled without the need of using any tools.

A further object of at least certain aspects of the present invention is to facilitate

disassembling of panels configured to be assembled and disassembling without the need of tools.

A further object of at least certain aspects of the present invention is to facilitate assembling of panels configured to be assembled with a locking device that is easy to manufacture and to use. A further object of at least certain aspects of the present invention is to facilitate assembling of panels configured to be assembled with a locking device that is in one piece.

At least some of these and other objects and advantages that may be apparent from the description have been achieved by a set of panels, preferably for a furniture product, comprising a panel and an adjacent panel. The panel comprises a groove and at least one hole connected to the groove via an opening. The adjacent panel comprises a first edge that is configured to be arranged in the groove of the panel. The panel comprises a locking device configured to lock the first edge of the adjacent panel in the groove of the panel. The locking device comprises a cylinder and a lever connected to the cylinder. The cylinder is configured to be arranged in the hole in the panel. The cylinder is an eccentric cylinder comprising a top and bottom base and a locking surface connecting the top and bottom base. The cylinder is configured to act as a cam when the cylinder is turned about an axis in the hole. The lever is configured to, when turned, turn the cylinder about the axis between a mounting position and a locking position, wherein in the mounting position the first edge of the adjacent panel is free to be arranged in the groove of the panel and in the locking position a part of the locking surface of the locking device extends into the groove through the opening and locks the adjacent panel in the groove. Arranged in the groove of the panel may be in a direction of the depth of the groove and/or in a direction along the length of the groove. By a set of panels in accordance to this the adjacent panel and the panel could be locked to each other in an effective way and in an easy way. The eccentric cylinder exerts a force to the adjacent panel that locks the adjacent panel and the panel together in a good way. Embodiments of the locking device do not need any tools to be used. Further, the locking device may be a single piece that is easy to use. Further, by only having a single piece locking device the manufacturing of the locking device could be made in one step and thus reduce the cost for the locking device. Embodiments of the set of panels may involve the advantage that the adjacent panel does not need to be machined in a specific manner to be able to interact with the locking device.

According to an aspect, the locking surface of the cylinder has a cross sectional snail, eccentric or egg shape, which in an easy way can accomplish a needed force from the locking device to the adjacent panel in an easy way. According to an aspect, the locking surface of the cylinder has a shape that is a combination of a snail, eccentric and/or egg shape, which gives the advantages of that the mounting and locking positions could be stable positions and that the user could get tactile feedback when turning the lever.

According to an aspect, the locking device is arranged to, in the locking position, lock the adjacent panel to the panel by pressing it against a wall of the groove.

According to an aspect, the hole is a circular hole, a circular segment of the hole extends into the groove with the height of the circular segment and the chord of the circular segment defines a width of the opening.

According to an aspect, a largest diameter of the cylinder is substantially equal to the diameter of the hole, which involves that the locking device could be fastened in the hole via friction and at the same time be turned.

According to an aspect, the part of the locking surface extends, in the locking position, through the opening into the groove with a length that is 5-25% of the largest diameter of the cylinder, preferably the length is 10-15% of the largest diameter of the cylinder.

According to an aspect, the length in the radial direction of the cylinder that the part of the locking surface extends into the groove in the locking position substantially corresponds to the height of the circular segment.

According to an aspect, the cylinder, in the mounting position, does not extend through the opening into the groove. The groove is thus free to insert the adjacent panel.

According to an aspect, the length of the part of the locking surface that extends into the groove through the opening is configured to gradually increase when the locking device is moved from the mounting position to the locking position, which gives the user a tactile feedback of that the adjacent panel is locked.

According to an aspect, the locking surface of the cylinder comprises one or more ridges to increase the force that the locking device exert on the adjacent panel, by concentrating the force to one or more points. The ridges can also cut into the adjacent panel and/or the wall of the hole to increase the strength of the locking device and the force exerted. According to an aspect, the one or more ridges extend around at least a part of a circumference of the locking surface, which opens up for that the force from the locking device could be different in different positions.

According to an aspect, a height of the ridges varies along its extension which further opens up for that the force from the locking device could be different in different positions.

According to an aspect, the one or more ridges has a helical shape configured to press the adjacent panel downwards when moving the locking device from the mounting position to the locking position.

According to an aspect, the adjacent panel comprises a second hole that is configured to be arranged at the opening and to interact with the cylinder to lock the adjacent panel to the panel. According to an aspect, the locking surface of the cylinder comprise at least one ridge that, in the locking position, is configured to be arranged at least partly in the second hole. In addition to the pressing force exerted from the locking device, the second hole interacting with the cylinder achieves a further mechanical lock. The set of panels also involves the advantage of that the adjacent panel does not need to be machined in a complicated manner, since a hole could be accomplished in an easy and cost efficient manner.

According to an aspect, an edge of the ridge has an inclined surface that is configured to interact with a wall of the second hole to press the adjacent panel downwards into the groove of the panel. By having an inclined surface the ridge can press the adjacent panel downwards in the groove.

According to an aspect, the lever is connected to the cylinder at an inner end and at an outer end comprises a lock pin that, in the locking position, is configured to be arranged in the groove at a distance from the hole and to lock the lever from turning from the locking position towards the mounting position.

According to an aspect, the locking device is configured such that the outer end of the lever is, in the mounting position, arranged at a distance from the adjacent panel and in the locking position adjacent, preferably in contact, with the adjacent panel, which makes it easy for a user to grab the outer end and to turn the locking device. According to an aspect, the locking device is configured such that the lever extends, in the mounting position, in an essentially perpendicular direction or within the range of about 70° to about 110° from the adjacent panel.

According to an aspect, the locking device is configured to be moved between the mounting position and the locking position by turning the lever and the cylinder between 30°-180°, preferably between 90°-180°.

According to an aspect, the panel and the adjacent panel is one of a bottom piece of a drawer, a frame and a back piece of a furniture product.

At least some of the above identified and other objects and advantages that may be apparent from the description have been achieved by a locking device for a furniture product in accordance with the above.

At least some of the above and other objects and advantages that may be apparent from the description have been achieved by a method for assembly of a set of panels in accordance to the above. The method comprising the step of inserting the cylinder of the locking device into the hole of the panel, turning the lever of the locking device to position the locking device in the mounting position, inserting the first edge of the adjacent panel into the groove of the panel, and turning the lever in a first direction to move the locking device from the mounting position to the locking position to lock the first edge of the adjacent panel in the groove.

According to an aspect, the method comprise the further steps of turning the lever in a second direction to move the locking device from the locking position to the mounting position to unlock the first edge of the adjacent panel in the groove, and removing the first edge of the adjacent panel from the groove of the panel.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other aspects, features and advantages of which embodiments of the invention are capable of, will be apparent and elucidated from the following description of embodiments of the present invention, reference being made to the accompanying drawings, in which:

Fig 1 is a perspective view of a set of panels according to an aspect of the invention in an unassembled state. Figs 2A and 2B show a side view of a set of panels in an assembled state and an enlargement of the locking device.

Fig 3 is a cross sectional view of a part of a panel disclosing a groove and a hole.

Fig 4 is a view from above of a part of a panel disclosing the groove and the hole.

Fig 5 is a cross sectional view of a part of an assembled set of panels disclosing the adjacent panel in the groove and the cylinder in the hole.

Figs 6A-6D disclose a locking device according to an aspect from four different angles.

Figs 7A-7D disclose a locking device according to an aspect from four different angles.

Figs 8A-8D disclose a locking device according to an aspect from four different angles.

Figs 9A-9C disclose a perspective view of a set of panels according to an aspect in the mounting position, an intermediate position between the mounting and locking position and in the locking position from four different angles.

Figs 10A-10C disclose a set of panels from above and a cross sectional view of the set of panels along line G-G in fig 10A and an enlargement of the locking device.

DETAILED DESCRIPTION

Aspects of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. The set of panels and their parts disclosed herein can, however, be realized in many different forms and should not be construed as being limited to the aspects set forth herein. Like numbers in the drawings refer to like elements throughout.

The terminology used herein is for the purpose of describing particular aspects of the disclosure only, and is not intended to limit the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In the drawings and specification, there have been disclosed exemplary aspects of the disclosure. However, many variations and modifications can be made to these aspects without substantially departing from the principles of the present disclosure. Thus, the disclosure should be regarded as illustrative rather than restrictive, and not as being limited to the particular aspects discussed above. Accordingly, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, for example, definition of dimensions such as width or breadth or height or length or diameter depends on how exemplary aspects are depicted, hence, if depicted differently, a shown width or diameter in one depiction is a length or thickness in another depiction.

It should be noted that the word "comprising" does not necessarily exclude the presence of other elements or steps than those listed and the words "a" or "an" preceding an element do not exclude the presence of a plurality of such elements. It should further be noted that any reference signs do not limit the scope of the claims, that the example aspects may be implemented at least in part by means of both hardware and software, and that several "means", "units" or "devices" may be represented by the same item of hardware.

When the word "about" is used in this specification in connection with a numerical value, it is intended that the associated numerical value include a tolerance of +/- 10% around the stated numerical value.

The different aspects of the invention disclosed herein can be combined with the other aspects described herein. Two or more aspects could be combined.

An embodiment of the present invention, as shown in figure 1, to which now is referred to, discloses a set of panels 1. The set of panels 1 are preferably for a furniture product. The set of panels 1 comprise a panel 2 and an adjacent panel 3. The panel 2 and the adjacent panel 3 are arranged to be connected to each other and be perpendicular to each other. The panel 2 and the adjacent panel 3 each preferably comprises four edges, an outer surface 5,6 and an inner surface 7, 8. The outer and/or the inner surfaces may comprise a decorative layer (not shown).

An embodiment of the panel 2 is disclosed in figs 3, 4 and 5. The panel 2 comprise a groove 21 and at least one hole 22. The hole 22 is connected to the groove 21 via an opening 23. The groove 21 has a depth D21 and a width W. The groove 21 runs, according to an aspect, parallel to an edge of the panel 2. The length of the groove 21 is, according to an aspect, equal to or larger than the length of a first edge 31 of the adjacent panel 3 that should be arranged in the groove 21. The circumference of the hole 22, according to an aspect, overlaps the extension of the groove 21. A plane that defines the connection between the hole 22 and the groove 21 is defined as the opening 23. The hole 22 has a depth D22. According to an aspect, the hole 22 is a through going hole (not shown). Depth D22 may be the same or substantially the same as depth D21; alternatively, depth D22 may be greater than depth D21.

According to an aspect, the hole 22 is a circular hole 22, as disclosed in fig 3 and 4. A circular segment 25 of the hole 23 overlaps with the groove 21. Put another way, the circular segment 25 extend into the groove 21. The hole 22 extends into the groove 21 with the height h of the circular segment 25. A chord c of the circular segment 25 that extends into the groove 21 is another way to describe the opening 23. The length of the chord c of the circular segment 25 defines a width w of the opening 23. The hole 22 has a diameter dH. The groove 21 has walls 24,29 and a bottom 26. The hole 22 has wall 27 and a bottom 28. The hole 22 defines an axis A.

The adjacent panel 3 comprises a first edge 31, as disclosed in figs 1, 2A, and 2B. The first edge 31 of the adjacent panel 3 is configured to be arranged in the groove 21 of the panel 2. The thickness of the adjacent panel 3, at least at the first edge 31, is equal to or smaller than the width W of the groove 21 of the panel 2. According to an aspect, the adjacent panel 3 comprises a second hole 32. The position of the second hole 32 is such that it is configured to be arranged at the opening 23 of the panel 2. According to an aspect, the second hole 32 is configured to interact with the cylinder 41 to lock the adjacent panel 3 to the panel 2. The second hole 32 has a wall 33. According to an aspect, the second hole 32 is a through going hole 32. According to an aspect, the second hole 32 has a bottom (not shown).

The panel 2 comprises a locking device 4. The locking device 4 is configured to lock the first edge 31 of the adjacent panel 3 in the groove 21 of the panel 2. Put another way, the locking device 4 is adapted to lock the adjacent panel 3 to the panel 2. By lock is meant that that the first edge 31 of the adjacent panel 3 is restricted from moving out of the groove 21 of the panel 2. Put another way, the locking device 4 increases the force in at least one direction that has to be exerted to the adjacent panel 3 in comparison to the force that has to be exerted to the adjacent panel 3 to remove it from the groove 21 without the locking device 4. For example, the increased force may be at least twice as great, or at least five times as great. The locking device 4 is disclosed in more detail in figs 5 and 6A-8D.The locking device 4 comprises a cylinder 41 and a lever 42. The lever 42 is connected to the cylinder 41. The cylinder 41 is configured to be arranged in the hole 22 in the panel 2. The cylinder 41 is an eccentric cylinder 41. The cylinder comprises a top base 43, a bottom base 44 and a locking surface 45 connecting the top and bottom base 43, 44. By eccentric cylinder 41 is meant that the cylinder 41 has different lengths of its axis in different directions. According to an aspect, the eccentric shape of the cylinder is one or a combination of a snail shape, an elliptic shape (as disclosed in fig 5), an egg shape or a drop shape. According to an aspect, the locking surface 45 of the cylinder 41 has a cross sectional snail, eccentric, elliptic or egg shape. According to an aspect, the locking surface 45 of the cylinder 41 has a cross sectional shape that is a combination of at least one or more of snail, eccentric, elliptic or egg shape as disclosed in figs 6A-8D. According to an aspect, the locking surface 45 of the cylinder 41 has a shape that is a combination of a snail, eccentric and/or egg shape.

The locking device 4 may be made of a material that is one or a mix of a metal or a polymer material, such as a thermoplastic material, preferably with an reinforcement, such as glass fibre. The locking device 4 may be produced by injection moulding.

The cylinder 41 is configured to act as a cam when the cylinder 41 is turned about the axis A in the hole 22. The cylinder 41 will interact with the adjacent panel 3 and may move it when it is turned, or at least exert a force on the adjacent panel 3. The eccentricity of the cylinder 41 involves that the distance from the axis A that the cylinder 41 is turned about to the locking surface 45 in a specific direction will change when the cylinder 41 is turned. According to an aspect, the largest diameter dL of the cylinder 41 is substantially equal to the diameter of the hole dH. Substantially equal may be within 10% of each other, or within 5% of each other, orwithin 3% of each other. Put another way, the largest diameter dL of the cylinder is the longest distance along a line between two points on the locking surface 45. According to an aspect, the largest diameter dL of the cylinder is the longest distance along a line between two points on the locking surface 45a and including a central point of the cylinder 41. By having the diameter including the largest diameter dL of the cylinder 41 being designed to correlate with the diameter of the hole 22, the cylinder 41 can be arranged in the hole 22 and held in position in the hole 22 by friction between the walls 27 of the hole 22 and the cylinder 41. According to an aspect, the locking surface 45 of the cylinder 41 comprises one or more ridges 46 as disclosed in figs 6A-8D. According to an aspect, as disclosed in figs 6A-D, the locking device 4 comprises six ridges 46 on the locking surface 45. According to an aspect, as disclosed in figs 7A-D, the locking device 4 comprises three ridges 46 on the locking surface 45. According to an aspect, as disclosed in figs 8A-D, the locking device 4 comprises three ridges 46 on one side of the locking surface 45, as disclosed in fig 8B, and one ridge 46 on another side of the locking surface 45, as disclosed in figs 8A-8C. The ridges 46 concentrates the force exerted from the locking device 4 to the adjacent panel 2 to the edges of the ridges 46. The force from the locking device 4 is divided between the number of ridges 46. If there are a low number of ridges 46 the force exerted by each ridge 46 is larger than if there are more ridges 46. According to an aspect, the ridges are adapted to cut into the wall 26 of the hole 22. According to an aspect, the ridges are adapted to cut into the panel 2 as disclosed in fig 10.

According to an aspect, the one or more ridges 46 extend around at least a part of a circumference of the locking surface 45. According to an aspect, the ridges extend around the whole circumference of the locking surface 45. According to an aspect, the ridges extend around between 270°-359° of the circumference of the locking surface 45. According to an aspect, the ridges extend around between 180°-269° of the circumference of the locking surface 45. According to an aspect, the ridges extend around between 90°-179° of the circumference of the locking surface 45. According to an aspect, the ridges extend around between 10°-89° of the circumference of the locking surface 45. The ridges 46 have a height in the radial direction of the cylinder 41. Put another way, the height of the ridges 46 is the distance/length that the ridges 46 extend in the radial direction. According to an aspect, the ridge 46 have an triangular shape with a top angle that is equal to or less than 90°, such that the ridge 46 has a sharp edge that is adapted to interact with the wall 26 of the hole 22.

According to an aspect, the height of the ridges 46 varies along its extension. Put another way, the height of the ridges 46 varies along the circumference of the locking surface 45. According to an aspect, the one or more ridges 46 has a helical shape.

According to an aspect, the locking surface 45 of the cylinder 41 comprises at least one ridge 47, as is disclosed in figs 8A-D. According to an aspect, an edge of the ridge 47 has an inclined surface 48. The locking device 4 may comprise a protruding part 50 below the ridge 47 and at the bottom base 44. The protruding part may be configured to cooperate with the wall 27 of the hole 22 which may reduce or prevent tilting of the locking device 4, see figure 10C.

The lever 42 has an inner end 42a and an outer end 42b, as disclosed in figure 6A, 7A, and 8A. The lever 42 is connected to the cylinder 41. The inner end 42a of the lever 42 is connected to the cylinder 41. The lever 42 comprises, according to an aspect, a lock pin 49 at the outer end 42b. According to an aspect, the lock pin 49 may lock against the outer surface 6 of the panel 2. According to an aspect, the outer end 42b comprises a handle configured to be moved by a user.

The lever 42 is configured to, when turned, turn the cylinder 41 about the axis A between a mounting position, as disclosed in figure 9A, and a locking position, as disclosed in figure 9C. According to an aspect, the locking device 4 is configured to be moved between the mounting position and the locking position by turning the lever 42 and the cylinder 41 between 30°-180°. According to an aspect, the locking device 4 is configured to be moved between the mounting position and the locking position by turning the lever 42 and the cylinder 41 between 90°-180°.

In the mounting position the first edge 31 of the adjacent panel 3 is free to be arranged in the groove 21 of the panel 2. The first edge 31 of the adjacent panel 3 is arranged in the groove 21 by moving the adjacent panel 3 toward the panel 2, as shown by the arrow in figure 9A, and inserting the first edge 31 into the groove 21. According to an aspect, the cylinder 41 does not extend through the opening 23 into the groove 21 in the mounting position. According to an aspect, the cylinder 41 may slightly extend through the opening 23 into the groove 21 in the mounting position; however, in the locking position, the cylinder 41 extends further into the groove 21.

According to an aspect, the locking device 4 is configured such that the lever 42 extends, in the mounting position, in an essentially perpendicular direction or within the range of about 70° to about 110° from the adjacent panel 3, as disclosed in figure 9A. In the locking position a part 45a of the locking surface 45 of the locking device 4 extend into the groove 21 through the opening 23 and lock the adjacent panel 3 in the groove 21, as disclosed in figure 5. In the locking position the adjacent panel 3 is locked against the panel 2. According to an aspect, the locking device 4 is arranged to, in the locking position, lock the adjacent panel 3 to the panel 2 by pressing it against the wall 24 of the groove 21. The part 45a that extend into the groove 21 makes contact with the adjacent panel 3 and press it against the wall 24 of the groove 21. The part 45a extends through the opening 23 with a length hP, as disclosed in figure 5. According to an aspect, the part 45a of the locking surface 45 extend, in the locking position, through the opening 23 into the groove 21 with a length hP that is 5-25% of the largest diameter dL of the cylinder 41. According to an aspect, the part 45a of the locking surface 45 extend, in the locking position, through the opening 23 into the groove 21 with a length hP that is 10-15% of the largest diameter dL of the cylinder 41.

According to an aspect, the radial direction of the cylinder that the part 45a of the locking surface 45 that extends into the groove 21 in the locking position substantially corresponds to the height h of the circular segment 25. Put another way, the direction of the height h of the circular segment 25 is the same as the direction of the length hP of the part 45a of the locking surface 45.

According to an aspect, the outer end 42b of the lever 42 is, in the mounting position, arranged at a distance from the adjacent panel 3. According to an aspect, the outer end 42b of the lever 42 is, in the locking position, arranged adjacent with the adjacent panel 3. According to an aspect, the outer end 42b of the lever 42 is, in the locking position, arranged in contact with the adjacent panel 3. According to an aspect, the lock pin 49 is, in the locking position, configured to be arranged in the groove 21 to lock the lever 42 from turning from the locking position towards the mounting position. According to an aspect, the lock pin 49 is, in the locking position, arranged in the groove 21 at a distance from the hole 22, as disclosed in figure 9C.

According to an aspect, the length of the part 45a of the locking surface 45 that extend into the groove 21 through the opening 23 is configured to gradually increase when the locking device 4 is moved from the mounting position to the locking position. As the lever 42 is moved from the mounting position towards the locking position the size of the part 45a of the locking surface 45 that extends through the opening 23 increases gradually such that the force exerted from the locking device 4 on the adjacent panel 3 is also increased gradually. This gives a user of the locking device 4 tactile feedback of that the adjacent panel 3 is tighter and tighter locked in the groove 21.

According to an aspect, the inclined surface 48 of the edge of the ridge47 is configured to interact with the wall 33 of the second hole 32 in the locking position. According to an aspect, the inclined surface 48 is configured to, in the locking position, press the adjacent panel 3 downwards in the groove 21 of the panel 2.

According to an aspect, the helically shaped ridges 46 are configured to press the adjacent panel 3 downwards when moving the locking device 4 from the mounting position to the locking position. According to an aspect, at least one ridge 47 is, in the locking position, configured to be arranged at least partly in the second hole 32, as disclosed in fig 10c. The ridge 47 will act as a further lock and lock the adjacent panel 3 in the groove 21.

According to an aspect, the ridges are adapted to cut into the wall 27 of the hole 22, as is disclosed in fig 10, and/or the adjacent panel 3 when the locking device is moved from the mounting position towards the locking position. As the locking device 4 is turned the ridges will exert a force against the adjacent panel 3 and the wall 24 of the hole 22. If the force exceeds a value, depending on the material of the locking device 4, the adjacent panel 3 and the wall 27, the ridges 46 of the locking device 4 will cut into one or both of the wall 27 and the adjacent panel 3.

According to an aspect, the adjacent panel 3 comprises further edges that are configured to be locked against further panels 2.

According to an aspect, the panel comprises two or more holes 22 at the groove 21 and a corresponding number of locking devices 4 configured to be arranged in each hole 22. According to an aspect, the panel comprises two or more grooves 21.

According to an aspect, the panel 2 and the adjacent panel 3 is one of a bottom piece of a drawer, a frame and a back piece of a furniture product.

Hereafter a method for assembly and disassembly of the set of panels 1 according to the above will be described with reference to figure 9A-9C.

When a user should assembly the set of panels 1 the following step is performed. The cylinder 41 of the locking device 4 is inserted into the hole 22 of the panel 2. Thereafter the lever 42 is turned to position the locking device 4 in the mounting position.

The first edge 31 of the adjacent panel 3 is inserted into the groove 21 of the panel 2. When the first edge 31 of the adjacent panel 3 is positioned in the groove 21 the lever 42 is turned in a first direction, as disclosed by the arrow in fig 9B, to move the locking device 4 from the mounting position to the locking position to lock the first edge 31 of the adjacent panel 3 in the groove 21.

According to an aspect, the edge 31 of the adjacent panel 3 is inserted into the groove 21 of the panel 2 before the locking device 4 is arranged in the hole 22. Thereafter the locking device 4 is inserted into the hole 22 with the locking device positioned in the mounting position in relation to the adjacent panel 3 and the panel 2. Thus, the above described steps do not have to be performed in a specific order to lock the adjacent panel 3 to the panel 2.

According to an aspect, the locking device 4 is inserted into the hole 22 in a factory by another user or by a machine. Thus, the steps of the method could be divided to be performed by different users or by a machine.

According to an aspect, the set of panels 1 are one of a bottom piece of a drawer, a frame, a back piece of a furniture product and a panel for reinforcing an edge.

After the set of panels 1 are assembled and the user, or another user, would like to disassembly the set of panels 1 the following steps are performed. Turning the lever 42 in a second direction, as disclosed by the arrow in figure 9C, to move the locking device 4 from the locking position to the mounting position to unlock the first edge 31 of the adjacent panel 3 in the groove 21. When the lever 42 is moved back to the mounting position the cylinder 41 will turn together with it. As the cylinder 41 turns towards the mounting position the length of the part 45a of the locking surface 45 that extend through the opening 23 decreases and the force exerted by the locking device 4 on the adjacent panel 3 is thus also decreased. Thereafter, the first edge 31 of the adjacent panel 3 is removed from the groove 21 of the panel 2 and the set of panels 1 is disassembled.

According to an aspect, the above steps are repeated and the set of panels 1 is assembled again. According to an aspect, the panel 2 and/or the adjacent panel 3 is locked to another adjacent panel 3 and/or panel 2.

According to an aspect, the panel 2 comprises a groove 21 that has a width W is equal to or smaller than the width T of the adjacent panel 3 and the largest diameter dL of the locking device 4 and that is larger than the width T of the adjacent panel 3 and the smallest diameter of the locking device 4. According to an aspect, the edge 31 of the adjacent panel 3 and the locking device 4 are configured to be arranged in the groove 21 and the locking device 4 is turned in the groove 21 between the mounting position and the locking position. According to an aspect, the set of panels are resilient panels. The resilient panels may comprise a core comprising thermoplastic material. The thermoplastic material may be foamed.

The thermoplastic material may comprise polyvinyl chloride (PVC), polyester, polypropylene (PP), polyethylene (PE), polystyrene (PS), polyurethane (PU), polyethylene terephthalate (PET), polyacrylate, methacrylate, polycarbonate, polyvinyl butyral, polybutylene terephthalate, or a combination thereof. The core may be formed of several layers.

The aspects described above may comprise a decorative layer, such as a decorative foil comprising a thermoplastic material. The thermoplastic material of the decorative layer may be or comprise polyvinyl chloride (PVC), polyester, polypropylene (PP), polyethylene (PE), polystyrene (PS), polyurethane (PU), polyethylene terephthalate (PET), polyacrylate, methacrylate, polycarbonate, polyvinyl butyral, polybutylene terephthalate, or a combination thereof. The decorative foil is preferably printed, for example by direct printing, rotogravure, or digital printing. According to an aspect, the decorative layer comprise melamine, a high pressure laminate (HPL) or a veneer.

The aspects described above may comprise a wear layer such as a film or foil. The wear layer may comprise thermoplastic material. The thermoplastic material may be polyvinyl chloride (PVC), polyester, polypropylene (PP), polyethylene (PE), polystyrene (PS), polyurethane (PU), polyethylene terephthalate (PET), polyacrylate, methacrylate, polycarbonate, polyvinyl butyral, polybutylene terephthalate, or a combination thereof.

The aspects described above may comprise a panels comprising a wood base core, such as HDF, MDF, plywood, particleboard, OSB or masonite.