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Title:
A DOOR HANDLE ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2018/015865
Kind Code:
A1
Abstract:
Embodiment of the present invention relates to a door handle assembly [100]. The door handle assembly [100] comprises an inner cover [102], an outer cover [101], a gripper [103] and a glass run channel [105]. The glass run channel [105] is integrated with the handle inner cover [102] and/or the handle outer cover [101]. The door handle assembly [100] is manufactured using light weight material such as plastics. The door handle assembly [100] is hidden in the door panel [108] and does not protrude outside the surface of the door. The door handle assembly [100] minimizes the use of metal sub‐parts and hence cost effective and easy to assemble.

Inventors:
SHAIKH, Anwar Gaffar (D/11, Mayfair Eleganza-I N.I.B.M. Road Kondhwa, Maharashtra, Pune 7, 411047, IN)
Application Number:
IB2017/054300
Publication Date:
January 25, 2018
Filing Date:
July 17, 2017
Export Citation:
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Assignee:
MOTHERSON AUTOMOTIVE TECHNOLOGIES & ENGINEERING (A DIVISION OF MOTHERSON SUMI SYSTEMS LTD.) (10th Floor, Plot No. 1 Sector 127, Noida-Greater Noida Express way, Noida 1, 201301, IN)
International Classes:
E05B77/00; E05B85/10
Attorney, Agent or Firm:
SAHNEY, Garima (Saikrishna & Associates Advocates, B-140, Sector 51,Uttar Pradesh, India, Noida 1, 201301, IN)
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Claims:
We claim:

1. A door handle assembly [100] for an automobile, the door handle assembly [100] comprising: a handle inner cover [102]; a handle outer cover [101] connected to the handle inner cover [102] by at least one connecting means [104]; and a glass run channel [105] for accommodating a glass run mould [106] of a window glass [107], wherein the glass run channel [105] is integrated with at least one of the handle inner cover [102] and the handle outer cover [101], wherein each of the handle inner cover [102], the handle outer cover [101] and the glass run channel [105] are manufactured using a light-weight material.

2. The door handle assembly [100] as claimed in claim 1, further comprising a gripper [103] pivotally attached to the outer cover [101] for facilitating opening and closing of a door.

3. The door handle assembly [100] as claimed in claim 1, wherein the door handle assembly [100] is hidden inside a door panel [108] of the automobile.

4. The door handle assembly [100] as claimed in claim 1, wherein the at least one connecting means [104] comprises one or more self-tapping screws, nuts and bolts, an adhesive material or a combination thereof.

5. The door handle assembly [100] as claimed in claim 1, wherein the glass run mould

[106] seals the window glass [107] with the door of the automobile.

6. The door handle assembly [100] as claimed in claim 1, wherein the glass run channel

[105] is integrated with at least one of the handle inner cover [102] and the handle outer cover [101] using a moulding technique.

7. The door handle assembly [100] as claimed in claim 1, wherein the light weight material comprises one of a polyamide, plastic, thermoplastic, a polycarbonate, a resin or a combination thereof.

Description:
A DOOR HANDLE ASSEMBLY

FIELD OF THE INVENTION

The present invention generally relates to a door handle of a vehicle. More particularly, the present invention relates to a light weight door handle assembly of a vehicle.

BACKGROUND

The following description of related art is intended to provide background information pertaining to the field of the present disclosure. This section may include certain aspects of the art that may be related to various aspects of the present disclosure. However, it should be appreciated that this section be used only to enhance the understanding of the reader with respect to the present disclosure, and therefore, unless otherwise indicated, it should not be assumed that any of the approaches described in this section qualify as prior art merely by virtue of their inclusion in this section.

A door handle is an important part of any vehicle since it helps in getting in and out of the vehicle. In the automotive industry, styling has become the modern day norm. A customer not only demands a robust automobile but they like to have a styling appeal to their automobile. The door handle also demands this styling appeal. Several attempts have been made to meet this demand by providing a door handle which does not protrude outside from the streamline of the vehicle. One of the styling appeals can be seen in a door handle which is concealed or hidden from outside of the vehicle. This can be achieved by implementing innovation in the manufacturing process such that the manufacturer is able to meet the styling demand of hidden door handle as desired by the customer without compromising on the robust product line.

In the present automotive industry, a door handle assembly is made by using various metal components such as handle covers and glass run channel and various metal sub-components such as rivets, nuts and bolts. Figure 1 shows a door handle assembly [100] with a metallic glass run channel [105]. As apparent from the figure, the metallic glass run channel [105] is a separate component and is hence required to be fixed to the handle assembly [100]. The use of metallic glass run channel [105] as a separate component not only increases the weight of the door handle assembly to a large extent but also adds-on to the overall cost of the handle

l assembly. Thus, increased weight and cost are greatest disadvantages of such door handle assembly.

Further, due to the use of various metal components and their assembly with the other components, the assembling time increases which substantiality decreases the productivity of the manufacturer in the competitive manufacturing industry.

In the existing door handle of an automobile, the door handle assembly comprises of an aluminum or metal die casting structure with a riveted glass run channel, that it typically a metal channel being fitted in the handle assembly with the rivets or screws to provide a holding means for a glass window of the door. This not only consumes a lot of assembling time but is not even a cost effective assembly.

Hence, in light of the drawbacks which are aforementioned and inherent in the existing art, there exists a need to provide a door handle assembly of an automobile that is concealed or hidden in the panel of the door and is not visible from outside of the vehicle. Further, there exists a need to propose a door handle assembly that minimizes the use of metal components in the door handle assembly. In addition, there is a requirement to provide a door handle which is light in weight. It is yet another requirement in the existing art to provide a door handle assembly which reduces the assembling time of the door handle and which is cost effective.

SUMMARY OF THE INVENTION

This section is provided to introduce certain objects and aspects of the present invention in a simplified form that are further described below in the detailed description. This summary is not intended to identify the key features or the scope of the claimed subject matter.

In view of the above shortcomings of the existing systems, as discussed in the background section, it is apparent that there exists a need to provide a door handle assembly of an automobile. Further, the primary object of the present invention is to provide a door handle assembly that reduces the use of metallic components and thus reduces the weight of the handle assembly without compromising the strength of the door handle. Another object of the present invention is to provide a door handle assembly that reduces the assembling time of the door handle assembly and is cost effective. Yet another object of the present invention is to provide a door handle assembly which is hidden or concealed in a door panel and does not protrude from the surface of the door and thus achieving the styling appeal. Accordingly, one aspect of the present invention relates to a door handle assembly for an automobile. The door handle assembly comprises a handle inner cover; a handle outer cover connected to the handle inner cover by at least one connecting means; and a glass run channel for accommodating a glass run mould of a window glass, wherein the glass run channel is integrated with at least one of the handle inner cover and the handle outer cover. Each of the handle inner cover, the handle outer cover and the glass run channel are manufactured using a light-weight material.

Other objects, features, and advantages of the present invention will become apparent from the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

The accompanying drawings, which are incorporated herein, and constitute a part of this invention, illustrate exemplary embodiments of the disclosed charger casing assembly in which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present invention. Also, the embodiments shown in the figures are not to be construed as limiting the invention, but the possible variants of the charger casing assembly according to the invention are illustrated herein to highlight the advantages of the invention.

Figure 1 illustrate a glass run channel fixed to a door handle assembly in accordance with the prior art.

Figure 2 illustrates an isometric view of a door assembly of a vehicle in accordance with the present invention.

Figure 3 illustrates an exploded view of a door handle assembly in accordance with the present invention. Figure 4 illustrates installation of the door handle assembly on the door panel of a vehicle in accordance with the present invention.

Figure 5 illustrates a sectional view "AA" of the door handle assembly in accordance with the present invention. Figure 6 illustrate a magnified view of a door handle assembly in accordance with the present invention.

It may be evident to skilled artisans that mechanical components in the figures are only illustrative, for simplicity and clarity, and have not necessarily been drawn to scale. For example, the dimensions of some of the mechanical components in the figures may be exaggerated relative to other components to help to improve understanding of embodiments of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

In the following description, for the purposes of explanation, various specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that the disclosed embodiments may be practiced without these specific details. Several features described hereafter can each be used independently of one another or with any combination of other features. However, any individual feature may not address any of the problems discussed above or might address only some of the problems discussed above. Some of the problems discussed above might not be fully addressed by any of the features described herein.

Techniques are encompassed for providing a door handle assembly [100] of a vehicle. The door handle assembly comprises a handle inner cover [102] and a handle outer cover [101] connected to each other by at least one connecting means [104]. The door handle assembly further comprises a glass run channel [105] for the movement of a glass window [107]. The door handle assembly [100] is hidden or concealed inside a door panel [108] of a vehicle door and is not directly seen from the side view of the vehicle. In other words, the door handle assembly [100] does not protrude from the door surface of the automobile or remains at the level of the surface of the door and thus, gives an aesthetically pleasing factor and caters to the styling demands of a customer.

As used herein, "vehicle" and its cognate term, such as "automobile" refer to is a mobile machine used for transporting people or goods, especially on land. The vehicle may include, but not limited to, an electric vehicle, a hybrid vehicle, a conventional vehicle, an alternative fuel vehicle or any such vehicle as may be obvious to a person skilled in the art. As used herein, "door panel" or "panel" refers to a structure or surface in which various components are mounted or fixed. Further, a vehicle door panel comprises various components such as a handle; a window glass and a glass run channel mounted or fixed in the panel.

As used herein, "handle" refers to an object or mechanism attached to open or close a door. Further, the handle is mounted in a panel of a door of a vehicle for facilitating the opening and closing of the door.

As used herein, "glass run channel" refers to a channel or frame in which a window glass moves. Further, the glass run channel is provided to accommodate a glass run mould.

As used herein, "glass run mould" refers to a flexible component provided inside a glass run channel for sealing a glass window in the door of a vehicle. Further, the glass run facilitates smooth movement of glass window inside the glass run channel and prevent destructive striking of the glass window with the glass run channel.

As used herein, "gripper" refers to a gripping component that is attached to a handle body which operates the mechanism of opening and closing of a door. The door handle assembly [100] as encompassed herein and as illustrated in figure 2 and figure 3 comprises a handle inner cover [102] and a handle outer cover [101]. The handle inner cover [102] and the handle outer cover [101] form a rigid structure and provide a desired strength required to operate the door handle assembly [100]. The handle inner cover [102] and the handle outer cover [101] are connected using at least one connecting means [104]. The handle inner cover [102] provides an internal structure to the door handle assembly [100]. The handle inner cover [102] comprises a plate and a plurality of ribs [102a] configured on the surface of the handle inner cover [102] for providing support to the handle inner cover [102]. The handle inner cover [102] further comprises a protruded convex relief portion [102b] for providing a space/room for the movement of the gripper [105]. The handle inner cover [102] is manufactured using a light weight material. The light weight material includes, but is not limited to a polyamide, plastic, thermoplastic, a polycarbonate, a resin or a combination thereof. The handle outer cover [101] provides an outer structure to the door handle assembly [100]. The handle outer cover [101] has a flat surface [101a] exposed outside the vehicle. The flat surface [101a] of the outer cover [101] is provided with the same level of the surface of the door such that the door handle assembly [100] does not protrude outside of the door surface. The handle outer cover [101] also comprises a concave relief portion [101b] for facilitating the movement of the gripper [105]. The handle inner cover [102] and the handle outer cover [101] are connected such that the protruded convex relief portion [102b] of the handle inner cover [102] matches with the concave relief portion [101b] of the handle outer cover [101]. The handle inner cover [102] and the handle outer cover [101] are connected using at least one connecting means [104]. The connecting means [104] comprises one of self-tapping screws, rivets, nuts and bolts, adhesive material.... and combination thereof. In one embodiment, the at least one connecting means [104] comprises self-tapping screws. The handle outer cover [101] is manufactured using a light weight material. The light weight material includes, but is not limited to a polyamide, plastic, thermoplastic, a polycarbonate, a resin or a combination thereof.

The glass run channel [105] as encompassed herein and as illustrated in figure 5, figure 1 and figure 6, provides a channel for the movement of the glass window [107]. The glass run channel [105] is integrated with one of the handle inner cover [102], the handle outer cover [101] or both. The glass run channel [105] is manufactured using a light weight material. The light weight material includes, but is not limited to a polyamide, plastic, thermoplastic, a polycarbonate, a resin or a combination thereof. The glass run channel [105] may be manufactured using moulding technique. The technique comprises moulding the glass run channel [105] with the handle inner cover [102] and/or the handle outer cover[101], such that the glass run channel [105] is self-constituted in the handle inner cover [102] and/or the handle outer cover [101]. The handle inner cover [102] and the handle outer cover [101] are assembled such that it results in the formation of the glass run channel [105] between them. The advantage of moulding the glass run channel [105] with the handle inner cover [102] and/or the handle outer cover [101] is that manual effort and time in assembling the door handle assembly [100] is reduced. The glass run channel [105] accommodates the glass run mould [106] and holds the glass run mould [106] in place. The glass run channel [105] comprises one or more protrusions/ beads [105a] for locking the glass run mould [106] as shown in figure 6. The protrusions/ beads [105a] resist the glass run mould [106] to come out from the glass run channel [105], thus making the assembly of the glass run channel [105] and the glass run mould [106] a robust design. The glass run mould [106] provides a sealing between the glass window [107] and the door of the vehicle. The glass run mould [106] also acts as a cushion for the glass window [107] for smooth movement of the glass window [107] in the glass run channel [105] and prevents the edges of the glass window [107] from damage or distortion. The glass run mould [106] may be manufactured using a flexible material comprising rubber, plastic, resin or any such material as may be obvious to a skilled person.

The gripper [103] as encompassed herein and as illustrated in figure 3 and figure 5 is pivotally attached to the handle outer cover [101] in the concave relief portion [101b]. The gripper [105] may be used for gripping the handle assembly [100] from outside of the vehicle. The gripper [103] facilitates the opening or closing the door of the vehicle. The gripper [103] comprises a gripper hinge pin [112] for hinging the gripper with the handle outer cover [101] of the door handle assembly [100]. The gripper [103] is connected to a push link [114] for operating a door latch cable. The door latch cable is a connecting link which transfers the movement of the gripper [103] to a door latch/lock. The gripper [103] further comprises a spring [116] for keeping the gripper [103] and the push link [114] under a tension for an operational coupling. The spring [103] also helps in pushing/ pulling the gripper [103] in place after the gripper [103] is operated. The push link [114] is hinged to the handle inner cover [102] of the door handle assembly [100] through a push link hinge pin [118]. The gripper [103], the push link [114], the spring [103] is assembled to the inner cover [102] and the handle outer cover [101] to obtain the door handle assembly [100]. The griper [105] is manufactured using a light weight material. The light weight material includes, but not limited to a polyamide, plastic, thermoplastic, a polycarbonate, a resin or a combination thereof.

Figure 4 illustrates a position of the door handle assembly [100] in a vehicle door. The door handle assembly [100] is mounted in the door panel [108] of the door using at least one metal insert [109] as shown in figure 2 and figure 5. The metal inserts [109] provides a rigid fixing of the door handle assembly onto the door panel [108] by means of the external bolts. The metal inserts [109] help in achieving recommended tightening torque while fixing the door handle assembly [100] onto door panel [108]. The fixings provided on the door handle assembly [100] may be unidirectional to avoid loosening of the door handle assembly [100] over a period of time. The door handle assembly [100] is operated by putting a hand inside a recess portion [200] provided in the vehicle and as shown in figure 4. The gripper [103] of the door handle assembly [100] can be felt and operated for opening/closing the door. The door handle assembly [100] may be used in front doors, rear doors or a combination of both front and rear doors of a vehicle. In one embodiment, the door handle assembly [100] is provided in the rear doors of the vehicle. The view depicted in the Figure 5 from X to Y refers to a direction of the car on which the door handle assembly [100] is mounted. The handle inner cover [102], the handle outer cover [101] the glass run channel [105] and the gripper [103] are manufactured using a light weight material. The light weight material includes, but is not limited to a polyamide, plastic, thermoplastic, a polycarbonate, a resin or a combination thereof. In a preferred embodiment, the light weight material includes the polyamide with 30% glass fiber reinforced (PA6+30%GF) by the injection moulding of PA6 grade. This material is noted for its high mechanical strength, stiffness and thermal stability. In addition, the material offers good toughness at low temperatures with good damping characteristics and high shock resistance. The material also possesses excellent processing properties. This also reduces the weight as well as the cost of the handle assembly [100]. However, a person skilled in the art may appreciate that any other material can also be used to constitute the present invention including, but not limited to any metal, polyamide with glass fiber reinforced like PA6+30% GF, PA6+50% GF or any other material which may provide the desired strength and robustness to the present invention.

The present invention eliminates the use of metal glass run channel thereby saving of the cost and reduction in the weight of vehicle. The present invention also avoids the welding or bolting process of metal glass run channel onto the door panel assembly.

However, a person skilled in the art may be cognizant of the fact that material and design of the inner cover, the outer cover, the gripper, the glass run channel and the glass run mould of the door handle assembly may vary with respect to the space available inside the door panel and the requirement of strength and robustness therein.

Although the present invention has been described in considerable detail with reference to certain preferred embodiments and examples thereof, other embodiments and equivalents are possible. Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with functional and procedural details, the disclosure is illustrative only, and changes may be made in detail, especially in terms of the procedural steps within the principles of the invention to the full extent indicated by the broad general meaning of the terms. Thus, various modifications are possible of the presently disclosed system and process without deviating from the intended scope and spirit of the present invention. A person having ordinary skill in the art will appreciate that the door handle discussed hereinabove is exemplary and are not limiting in any manner. Further, the components described hereinabove may be replaced, reordered or removed to form different embodiments of the present disclosure. Accordingly, in one embodiment, such modifications of the presently disclosed charger casing assembly are included in the scope of the present invention.