The present disclosure relates generally to a backdoor of a vehicle. The present invention, in particular, relates to a backdoor tail lamp mounting structure. The backdoor tail lamp mounting structure facilitate proper fitting of the tail lamp and ensure no seepage of water.
BACKGROUND
[0002] Tail lamps are an important safety aspect of the vehicle. Tail lamps shows rear edge of the vehicle to allow other drivers to appropriately gauge the size and shape of the car. In addition, tail lamps facilitate other drivers to see the vehicles in inclement weather such as rain or snow.
[0003] FIG. la illustrates tail lamps provided on backdoor of a vehicle in accordance with the existing art. Tail lamps 100 are usually provided at the edges of the backdoor of a vehicle facing rearward.
[0004] Generally, backdoor of a vehicle consists of a backdoor inner panel, a backdoor outer panel and reinforcement in the tail lamp mounting area. In common practice of vehicle manufacturing, a separate bracket is provided in tail lamp mounting area of a vehicle to facilitate mounting of tail lamp. The bracket provides resting surface to rear side of the tail lamp and also act as reinforcement. The bracket is spot welded on the backdoor outer panel and lamp is fixedly mounted on the bracket.
[0005] FIG. lb illustrates a backdoor tail lamp mounting structure in accordance with the existing art. In existing art, the bracket 101 is provided with holes 102 to facilitate mounting of tail lamp. The bracket 101 is spot welded on the backdoor outer panel 103. Since the mounting of the tail lamp is done over the bracket 101, any deviation in spot welding of the bracket 101 with the backdoor outer panel 103 may result in proportional deviation in gap between the tail lamp

and the backdoor outer panel 103. Thus, mounting of the tail lamp over the bracket 101, during assembly of a vehicle, is an intricate process which needs due diligence.
[0006] FIG. lc illustrates A-A section of the backdoor tail lamp mounting structure in accordance with the existing art. The A-A section of the backdoor tail lamp mounting structure clearly shows that the backdoor inner panel 104 is fixedly attached to the backdoor outer panel 103 through hemming. The hemming of the backdoor inner panel 104 and the backdoor outer panel 103 is usually done in the region before top edge of the tail lamp and region after bottom edge of the tail lamp. The bracket 101 is not involved in the hemming rather the bracket 101 is spot welded on the backdoor outer panel 103. A large cut-out 105 for tail lamp insertion is provided on the backdoor outer panel 103 and the bracket 101. The profile of the cut-out on bracket 101 and the backdoor outer panel 103 is similar. Further, there is a gap between the backdoor outer panel 103 and the bracket 101 through which seepage of water can occur if proper sealing is not provided in this region. A sealant in the form of sealing pads are provided on the tail lamp which rests on the backdoor outer panel 103 throughout the opening to prevent any water seepage. The sealing pads are thick and can only be use when the gap between the bracket 101 and the backdoor outer panel 103 is large. Often times, for narrow gap these sealing pads could not be used due to lack of adequate space.
[0007] Accordingly, there is a need for a backdoor tail lamp mounting structure for facilitating proper fitting of the tail lamp and ensure no seepage of water. SUMMARY
[0008] This summary is provided to introduce concepts related to a backdoor tail lamp mounting structure. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0009] The present subject matter relates to a backdoor tail lamp mounting structure. The backdoor tail lamp mounting structure comprises a backdoor inner oanel. a backdoor outer oanel and a bracket. The backdoor outer oanel has a cut-out

provided to facilitate insertion of tail lamp. The bracket is fixedly provided between the backdoor inner panel and the backdoor outer panel. The bracket comprises a base and an outer flange. The base has a tail lamp cut-out adapted to facilitate insertion of rear end of the tail lamp. The outer flange integrally originates vertically from outer periphery of the base and extends between the edges of the backdoor outer panel and the backdoor inner panel. The profile of lower end of the outer flange slopes downward creating an exit route for water.
[0010] In an aspect, the backdoor inner panel, the bracket and the backdoor outer panel is fixedly attached through hemming.
[0011] In an aspect, datum holes are provided on the backdoor outer panel to facilitate mounting of tail lamp.
[0012] In an aspect, holes are provided on the bracket corresponding to the datum holes of the backdoor outer panel to facilitate mounting of the tail lamp over the backdoor outer panel.
[0013] In an aspect, the holes on the bracket is wider than the datum holes of the backdoor outer panel.
[0014] In an aspect, lower end profile of the outer flange of the bracket is in conformity with lower end profile of the cut-out of the backdoor outer panel.
[0015] In an aspect, the lower end of the outer flange of the bracket and the lower end of the cut-out of the backdoor outer panel are joined together through lap joint.
[0016] In an aspect, the lap joint is sealed with paint sealer.
[0017] In an aspect, planar surface of the base is maintained around the tail lamp cut-out to provide sealing surface on the bracket.
[0018] In an aspect, sealant is applied on the sealing surface of the bracket to restrict any seepage of water.
[0019] In an aspect, the lower end of the outer flange of the bracket is constructed with a slope down profile to create an exit route for water.

[0020] In an aspect, the datum holes of the backdoor outer panel and the corresponding holes on the bracket are provided in the hemming portion of the backdoor inner panel, the bracket and the backdoor outer panel to improve durability.
[0021] To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
[0022] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF FIGURES
[0023] The illustrated embodiments of the present disclosure will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and processes that are consistent with the subject matter as claimed herein, wherein:
[0024] FIG. la illustrates tail lamps provided on backdoor of a vehicle in accordance with the existing art;
[0025] FIG. lb illustrates a bracket fixedly mounted on backdoor tail lamp mounting structure in accordance with the existing art;
[0026] FIG. lc illustrates A-A section of the backdoor tail lamp mounting structure in accordance with the existing art;
[0027] FIG. 2 illustrates front view of an exemplary backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure;

[0028] FIG. 3 illustrates front view of the exemplary bracket of the backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0029] FIG. 4 illustrates exit route of water in the exemplary backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure; and
[0030] FIG. 5 illustrates A-A section at the hemming portion of the exemplary backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure.
[0031] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[0032] A few aspects of the present disclosure are explained in detail below with reference to the various figures. Example implementations are described to illustrate the disclosed subject matter, not to limit its scope, which is defined by the claims. Those of ordinary skill in the art will recognize a number of equivalent variations of the various features provided in the description that follows.
Definitions
[0033] In the disclosure hereinafter, one or more terms are used to describe various aspects of the present disclosure. For a better understanding of the present disclosure, a few definitions are provided herein for better understating of the present disclosure.
[0034] "Hemming" may be defined as a sheet metal forming process in which metal sheets are joined by bending.

[0035] "Lap Joinf may be defined as joint between two pieces of metal in which edges or ends are overlapped and fastened together to produce a flush surface.
[0036] "SealingSurface" is defined as surface which is provided around the tail lamp cut-out in the bracket for preventing water seepage from the gap between the bracket and the tail lamp.
[0037] "Hemming Portion" may be defined as region on the backdoor where hemming among the backdoor outer panel, the backdoor inner panel and the bracket is done.
EXEMPLARY IMPLEMENT A TIONS
[0038] While the present disclosure may be embodied in various forms, there are shown in the drawings, and will hereinafter be described, some exemplary and non-limiting embodiments, with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific embodiments illustrated. Not all of the depicted components described in this disclosure may be required, however, and some implementations may include additional, different, or fewer components from those expressly described in this disclosure. Variations in the arrangement and type of the components may be made without departing from the scope of the claims as set forth herein.
[0039] On the backdoor of a vehicle, tail lamps are provided on left and right side of the backdoor. In the tail lamp mounting area, a bracket is provided to facilitate mounting of the tail lamp by providing a mounting surface to the tail lamp. The mounting of tail lamp on the bracket makes the assembling of the tail lamp more complex. This prevents proper fitting of the tail lamp over the backdoor tail lamp mounting structure.
[0040] In general practice, the backdoor tail lamp mounting structure comprises a backdoor inner panel and a backdoor outer panel. The bracket is usually spot

welded on the backdoor outer panel in such a way that the bracket is sandwiched between the backdoor inner panel and the backdoor outer panel. This type of assembly of the bracket results in creation of a gap between the bracket and the backdoor outer panel in non-spot welded area through which water seepage may occur.
[0041] To solve the problem, a backdoor tail lamp mounting structure is needed for facilitating proper fitting of the tail lamp and ensure no seepage of water.
[0042] In order to achieve this goal of facilitating proper fitting of the tail lamp and ensuring no seepage of water, a backdoor tail lamp mounting structure may be utilized. The backdoor tail lamp mounting structure is described in more detail below:
[0043] FIG. 2 illustrates front view of an exemplary backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure. The backdoor tail lamp mounting structure 200 comprises a backdoor inner panel (not shown), a backdoor outer panel 201 and a bracket 202. A cut-out 203 is provided on the backdoor outer panel 201 in the tail lamp mounting area to facilitate insertion of a tail lamp (not shown). Further, a plurality of datum holes 204 are provided on the backdoor outer panel 201 to facilitate mounting of the tail lamp. In an aspect, the tail lamp is mounted on the backdoor outer panel 201 through fasteners. These fasteners pass through the datum holes 204. The bracket 202 is fixedly provided between the backdoor inner panel and the backdoor outer panel 201.
[0044] FIG. 3 illustrates front view of the exemplary bracket of the backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure. The bracket 202 comprises a base 301 and an outer flange 302. The base 301 of the bracket has a tail lamp cut¬out 301a which is adapted to facilitate insertion of rear end of the tail lamp. Profile of the cut-out 301a is provided in conformity with the dimensions of the rear end of the tail lamp. The outer flange 302 of the bracket integrally originates in vertical direction from outer periphery of the base 301. Further, the outer flange 302 extends

between the edges of the backdoor outer panel 201 and the backdoor inner panel in such a way that the outer flange 302 of the bracket 202 is sandwiched between the backdoor inner panel and the backdoor outer panel 201. Together the outer flange 302 of the bracket 202, the backdoor inner panel and the backdoor outer panel 201 form a hemming portion. A hemming operation is performed on the hemming portion to fixedly attach the bracket 202 with the backdoor inner panel and the backdoor outer panel 201. Plurality of holes 303 are provided on the bracket 202 corresponding to the datum holes 204 of the backdoor outer panel 201 to facilitate mounting of the tail lamp over the backdoor outer panel 201. Further, the plurality of holes 303 on the bracket 202 are made wider than the datum holes 204 on the backdoor outer panel 201 to facilitate passing of the fasteners coming through the datum holes 204. Further, a wider dimension of the holes 303 of the bracket 202 with respect to the datum holes 204 of the backdoor outer panel 201 neutralize any deviation occur during fixing of the bracket 202 on the backdoor outer panel 201.
[0045] In an aspect, the datum holes 204 on the backdoor outer panel 201 and the corresponding holes 303 on the bracket 202 are provided on the hemming portion. This enhance the rigidity of the backdoor tail light mounting structure 200 and helps improve the durability as the datum holes 204 have thick base to accommodate fasteners used to fasten the tail lamp over the backdoor outer panel 201.
[0046] FIG. 4 illustrates exit route of water in the exemplary backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure. The tail lamp cut-out 301a provided in the bracket 202 is smaller in the exemplary embodiment as compared to the existing art. Due to this, the application of sealing pad for eliminating water seepage is not possible on the backdoor outer panel 201. To ensure zero water ingression from the bracket 202 and the outer panel 201, the sealing for the tail lamp is provided on the bracket 202 instead of the backdoor outer panel 201. To facilitate sealing operation, the surface 304 of the base 301 around the tail lamp cut-out 301a is maintained

planar. This planar profile of the surface 304 around the tail lamp cut-out 301a provide sealing surface on the bracket 202.
[0047] To further ensure zero water seepage from other regions of the bracket 202, the profile of the lower end 302a of the outer flange 302 of the bracket 202 is made in conformity with the profile of the lower end 203 a of the cut-out 203 of the backdoor outer panel 201. Further, the identical profile of the lower end 302a of the outer flange 302 and the lower end 203a of the cut-out 203 of the backdoor outer panel 201 is joined together through a lap joint. This ensures formation of flush surface at the joint of the lower end 302a of the outer flange 302 of the bracket 202 and the lower end 203a of the cut-out 203 of the backdoor outer panel 201. To further enhance the sealing quality, a paint sealer is applied at the lap joint.
[0048] In an aspect, the lower end 302a of the outer flange 302 of the bracket 202 is constructed with a slope down profile to create an exit route for water. The slope down profile of the lower end 302a of the outer flange 302 ensures that all the water entering the bracket 202 exits through the exit route.
[0049] FIG. 5 illustrates A-A section at the hemming portion of the exemplary backdoor tail lamp mounting structure that can be utilized to implement one or more exemplary embodiments of the present disclosure. Together the outer flange 302 of the bracket 202, the backdoor inner panel 501 and the backdoor outer panel 201 form a hemming portion. A hemming operation is performed on the hemming portion to fixedly attach the bracket 202 with the backdoor inner panel 501 and the backdoor outer panel 201. Since the hemming operation is performed on the bracket 202, the backdoor outer panel 201 and the backdoor inner panel 501 together, it enhances the rigidity of the backdoor tail light mounting structure 200 and helps improve the durability in hemming portion.
ADVANTAGES
[0050] The backdoor tail lamp mounting structure ensures proper fitting of the tail lamp as the tail lamp is directly mounted on the backdoor outer panel instead of the bracket. Further, the backdoor tail lamp mounting structure ensures additional

durability and rigidity as hemming operation is performed on the backdoor inner panel, the bracket and the backdoor outer panel in the hemming portion. Also, datum holes are preferably provided on the hemming portion to further increase the rigidity and durability. Furthermore, the backdoor tail lamp mounting structure neutralize any deviation occur during fixing of the bracket on the backdoor outer panel as the holes provided on the bracket corresponding to the datum holes of the backdoor outer panel is made wider.
[0051] In addition to above mentioned advantages, the backdoor tail lamp mounting structure also ensures zero water seepage by providing sealing for tail lamp on the bracket instead of the backdoor outer panel and by constructing the lower end of the outer flange of the bracket with a slope down profile to create an exit route for water. To further enhance the sealing quality, a paint sealer is applied at the lap joint formed by joining the identical profile of the lower end of the outer flange of the bracket and the lower end of the cut-out of the backdoor outer flange.
[0052] The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.
[0053] Further, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0054] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and

substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0055] It will be appreciated that variants of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.

We Claim:

1. A backdoor tail lamp mounting structure (200), comprising:
a backdoor inner panel (501);
a backdoor outer panel (201) having a cut-out (203) provided to facilitate insertion of tail lamp; and
a bracket (202) fixedly provided between the backdoor inner panel (501) and the backdoor outer panel (201), the bracket (202) comprises:
a base (301) having a tail lamp cut-out (301a) adapted to facilitate insertion of rear end of the tail lamp;
an outer flange (302) integrally originating vertically from outer periphery of the base (301) and extending between the edges of the backdoor outer panel (201) and the backdoor inner panel (501), wherein the profile of lower end (302a) of the outer flange (302) slopes downward creating an exit route for water.
2. The backdoor tail lamp mounting structure (200) as claimed in claim 1, wherein the backdoor inner panel (501), the bracket (202) and the backdoor outer panel (201) is fixedly attached through hemming.
3. The backdoor tail lamp mounting structure (200) as claimed in claim 1, wherein datum holes (204) are provided on the backdoor outer panel (201) to facilitate mounting of tail lamp.
4. The backdoor tail lamp mounting structure (200) as claimed in claim 3, wherein holes (303) are provided on the bracket (202) corresponding to the datum holes (204) of the backdoor outer panel (201) to facilitate mounting of the tail lamp over the backdoor outer panel (201).
5. The backdoor tail lamp mounting structure (200) as claimed in claims 3 or 4, wherein the holes (303) on the bracket (202) is wider than the datum holes (204) of the backdoor outer panel (201).

6. The backdoor tail lamp mounting structure (200) as claimed in claim 1, wherein lower end (302a) profile of the outer flange (302) of the bracket (202) is in conformity with lower end (203a) profile of the cut-out (203) of the backdoor outer panel (201).
7. The backdoor tail lamp mounting structure (200) as claimed in claim 6, wherein the lower end (302a) of the outer flange (302) of the bracket (202) and the lower end (203a) of the cut-out (203) of the backdoor outer panel (201) are joined together through lap joint and the lap joint is sealed with paint sealer.
8. The backdoor tail lamp mounting structure (200) as claimed in claim 1, wherein planar surface of the base (301) is maintained around the tail lamp cut-out (301a) to provide sealing surface (304) on the bracket (202).
9. The backdoor tail lamp mounting structure (200) as claimed in claim 9, wherein sealant is applied on the sealing surface (304) of the bracket (202) to restrict any seepage of water.
10. The backdoor tail lamp mounting structure (200) as claimed in claim 3, wherein the datum holes (204) of the backdoor outer panel (201) and the corresponding holes (303) on the bracket (202) are provided in the hemming portion of the backdoor inner panel (501), the bracket (202) and the backdoor outer panel (201) to improve durability.