JP2021000876A - Back door lamp mounting reinforcement structure of automobile - Google Patents

Abstract

To provide a back door mounting reinforcement structure of an automobile in which lamps shapes to extend from a back door to a rear end part of a vehicle body are mounted on both end parts in a vehicle width direction of the rear end part of the vehicle body, which is configured so that rigidity and torsion strength of a structure of a lamp member attachment part is enhanced.SOLUTION: The back door mounting reinforcement structure of an automobile is configured so that rigidity and torsion strength of a structure of a lamp member attachment part is enhanced by, jointly with a joint, a reinforcement member provided along an inner panel to an outer panel for forming a lamp housing to form a certain closed cross section space between a main body of the reinforcement member and the outer panel.SELECTED DRAWING: Figure 8

Description

The present invention relates to an automobile back door lamp mounting reinforcement structure for improving the rigidity of an automobile back door.

Conventionally, the back door of a hatchback type automobile has not been equipped with a rear lamp due to the wiring and space for supplying power.

However, by changing the light source used for light emission from an incandescent bulb to an LED (Light Emitting Diode), the current consumption is reduced, the wiring diameter for supplying power is reduced, and the shape of the lamp housing is reduced. Can now be made thinner. Along with this, it became possible to attach a rear lamp having a shape extending from the back door to the rear end of the vehicle body to the back door, and at the request of the design, both ends of the rear end of the vehicle body in the vehicle width direction and the back door. , The number of vehicles equipped with rear lamps has increased.

For example, as shown in the rear perspective view of the automobile of FIG. 1, vehicle rear lamps 112 and 112 are attached to both ends of the rear end of the vehicle body of the vehicle 1 in the vehicle width direction, and door rear lamps are attached to both lower ends of the back door 2. 111 and 111 are attached, and the rear lamps 111 for doors and the rear lamps 112 for vehicles at the left and right ends are connected to each other to form one rear lamp with both lamps.

For this reason, it has become necessary to form a recess 113, which will be described later, on the outer panel 120 side of the back door 2 of the vehicle in order to attach a rear lamp, which has not been seen in conventional vehicle models.
Hereinafter, a conventional example will be described based on the drawings. In these figures, the arrow F appropriately shown indicates the front of the vehicle, the arrow R indicates the rear of the vehicle, the arrow IN indicates the inside of the vehicle, the arrow OUT indicates the outside of the vehicle, and the arrow UP indicates the upper part of the vehicle. ..

FIG. 9 is a perspective view showing an example of a state in which the interior material of the back door 2 is removed, as viewed from the rear right side of the vehicle from the rear (R) and the outside (OUT) of the vehicle. In this figure, the back door 2 has a beam portion 3 formed on the peripheral portion thereof to maintain mechanical strength.

Specifically, the beam portion 3 is molded by being raised inward in the vehicle (IN direction) along the peripheral edge portion of the inner panel 121 forming the back door 2 in a substantially U-shaped cross section, and the peripheral edge portion thereof is formed. Is formed by bending, joining and welding with the outer panel 120. The outer panel 120 is a panel that forms the exterior of the back door 2, and is formed so as to project outward (OUT direction) in a gentle curved shape.

As shown in FIG. 10, the cross section of the beam portion 3 is formed by welding the peripheral end 129 of the inner panel 121 and the outer panel 120 to form a closed cross-sectional space. That is, the closed cross-section space has a substantially trapezoidal cross-section surrounded by the inner panel 121 and the outer panel 120, and reinforcements 123 and 124 are further inserted inside in order to secure mechanical strength, and one end is bolted. It is tightened and fixed with a fastening member 141 such as a nut, and the other end is connected and fixed by welding.
Further, a back door glass 4 is fitted above the vehicle of the beam portion 3, and dampers 5 and 5 for supporting the opening and closing of the back door 2 are arranged on the outer side surface of the vehicle.

By adopting LEDs for the rear lamp 111 for the door and the rear lamp 112 for the vehicle, the rear lamp 111 for the door and the rear lamp 112 for the vehicle are made thinner, but in order to secure a space for accommodating the lamp housing 110 of the rear lamp 111 for the door. As shown in FIG. 11, recesses 113 are formed at the door rear lamps 111 and 111 mounting positions of the outer panel 120. A lamp replacement work hole 115 is formed in the central portion of the recess 113 provided in the outer panel 120, and a lamp replacement work hole 125 is formed in the inner panel 121 at a position corresponding to the hole 115. It forms a hole that connects the two.

FIG. 12 is a view of the state in which the lamp housing 110 of the rear lamp 111 for the door is attached to the back door 2 as viewed from the inside of the vehicle toward the rear (R) of the vehicle. The back surface of the outer panel 120 is seen through the lamp replacement work hole 125. Further, the back surface of the lamp housing 110 is seen through the lamp replacement work hole 115 formed through the recess 113 of the outer panel 120.

A wire harness 131 that supplies power to the rear lamp 111 for the door extends from the back surface of the lamp housing 110, and a connector 132 for connection is attached to the tip of the wire harness 131. A power supply wire harness connector (not shown) is connected to the connection connector 132 to supply power from the battery.

As shown in FIG. 13, the cross-sectional structure of the recess 113 is the outer panel 120 and the inner panel in the cross-sectional view of the lamp replacement work holes 115 and 125 in the DD direction (viewed from above in FIG. 12). In 121, the peripheral edge 129 on the outer side of the vehicle of the back door 2 is bent and overlapped, and joined by welding. On the other hand, the inner side of the vehicle, that is, the lamp replacement work holes 115 and 125 are not joined by welding or the like and are in an open state, and do not form a closed cross-sectional space as shown in FIG. It was.

The reason for adopting such a structure is that the lamp replacement work holes 115 and 125 must be opened in the immediate vicinity of the inside of the vehicle of the beam portion 3 due to the design restrictions and the mounting restrictions of the rear lamp 111 for the door. Therefore, it is not possible to secure a space for welding between the beam portion 3 and the lamp replacement work hole 125, and it is difficult to perform welding. It is also conceivable to press the inner end of the inner panel 121 having a substantially U-shaped cross section to a position where it reaches the outer panel 120 and weld it to the outer panel 120. However, since the beam portion 3 has a deeper throttle, the stroke Long press equipment is required and is not desirable.

For this reason, the welding of the inner panel 121 and the outer panel 120 between the beam portion 3 and the lamp replacement work hole 125 is abandoned, and the reinforcement 123 and the reinforcement 124 are placed on the surfaces facing the inner panel 121 and the outer panel 120. Was provided to reinforce the lamp housing 110 so as to maintain the rigidity and torsional strength of the structure of the mounting portion of the lamp housing 110.

Here, regarding the structure of the inner panel 121 and the outer panel 120 to which the lamp housing 110 is attached, there is a technique disclosed in Patent Documents 1 and 2 below.

In Patent Document 1, in the rear door structure for a vehicle, the outer panel is divided in the vertical direction including the upper panel and the lower panel, and the butt portion of the upper panel and the butt portion of the lower panel are butted and joined. At that time, the degree of freedom in design is ensured by forming notches for assembling the rear combination lamp at both ends of the joint where the butt portion of the upper panel and the butt portion of the lower panel are abutted and joined. However, a vehicle rear door structure capable of reducing cost and weight, suppressing deformation of the lamp mounting portion, and improving moldability and yield is disclosed.

Further, in Patent Document 2, in a vehicle in which a tail lamp having a shape extending from a back door to a rear end of a vehicle body is provided, an opening at the rear of the vehicle body is provided so as to be openable and closable via a hinge provided at the upper part, and the door is provided. In a back door with a deck part at the rear of the glass, a reinforcement is provided between the outer panel and the inner panel constituting the deck part in the vehicle width direction, and the upper surface located on the deck part of the reinforcement is provided. By joining the part and the lower part of the outer panel with an adhesive, the torsional rigidity of the back door deck part in the vehicle width direction is improved, and the vehicle suppresses vibration and low-frequency muffled noise when driving on rough roads. Backdoor reinforcement structure is disclosed.

Japanese Unexamined Patent Publication No. 2014-172464 Japanese Unexamined Patent Publication No. 2009-083800

These prior arts are configured by appropriately combining housing forming members in relation to the formation of the lamp housing, but the reinforcement functions exclusively as a member for maintaining the strength of the outer panel, the inner panel, etc. The rigidity of the back door is not improved by the configuration of the back door mounting portion.

That is, Patent Document 1 aims at improving the degree of freedom in design, productivity, and quality, and does not aim at improving the assembly structure or strength of the back door and the housing of the back door lamp. ..

Further, Patent Document 2 is intended to improve the torsional rigidity of the back door deck portion in the vehicle width direction by exclusively combining reinforcement with the outer panel, inner panel, etc., and the housing of the back door and the back door lamp. It does not improve the rigidity of the back door by improving the assembly structure with.

The present invention has been made in view of the above problems, and is used in an automobile back door lamp mounting structure in which rear lamps extending toward the rear of the vehicle body are attached to both ends of the rear end portion of the vehicle body in the vehicle width direction. An object of the present invention is to provide a back door lamp mounting reinforcement structure for an automobile, which is configured to improve the rigidity and torsional strength of the structure of the rear lamp member mounting portion.

In order to solve the above problems, in the back door lamp mounting structure of an automobile, the reinforcement member provided along the inner panel and the outer panel for forming the lamp housing are jointly tightened to join the reinforcement member main body and the outer panel. It is characterized in that a constant closed cross-sectional space is formed between the lamp member and the lamp member so as to improve the rigidity and torsional strength of the structure of the lamp member mounting portion.

Further, the joint of the reinforcement member and the outer panel for forming the lamp housing by co-tightening is provided in front of the vehicle at both upper and lower corners of the lamp replacement work hole formed in the reinforcement on the outside of the vehicle. It is characterized in that the connecting fixing portion and the recessed portion provided in the outer panel are in contact with each other so that they can be fastened.

According to the first aspect of the present invention, in the back door lamp mounting structure of an automobile, the reinforcement member provided along the inner side surface of the inner panel and the outer panel are jointly fastened and joined to the reinforcement member and the lamp housing. By forming a constant closed cross-sectional space between the outer panel and the outer panel, the thickness of the reinforcement member can be made thinner than before to realize weight reduction and cost reduction. With a simple structure, the rigidity and torsional strength of the mounting part of the lamp housing of the back door can be improved.

Further, according to the second aspect of the present invention, the lamp replacement work holes formed in the reinforcement are provided with the connecting fixing portions protruding in front of the vehicle at both the upper and lower corners of the outside of the vehicle. Since the outer panel and reinforcement can be connected and fixed without blocking the lamp replacement work hole, the rigidity and torsional strength of the mounting part of the lamp housing can be improved without interfering with the lamp replacement work. Has the effect of being able to.

It is a rear perspective view of the automobile which attached the rear lamp to the back door, or the automobile in embodiment of this invention. It is a rear perspective view when the back door of the automobile in the embodiment of this invention is opened. It is a figure which shows the state which the inner panel constituting a back door is seen from the front of a vehicle. It is an enlarged view of the peripheral part of the lamp replacement work hole in FIG. It is a figure which shows the state which the outer panel of the automobile in embodiment of this invention is seen from the rear of a vehicle. FIG. 5 is a cross-sectional view taken along the line AA of the outer panel of the automobile according to the embodiment of the present invention shown in FIG. It is a figure which shows the state which saw the lamp replacement work hole provided in the back door of the automobile in embodiment of this invention from the inside of a vehicle. FIG. 7 is a cross-sectional view of the back door shown in FIG. 7 in the BB direction. It is a perspective view which looked at the state which removed the interior material of the back door of a conventional vehicle from the right side of the rear part of a vehicle toward the outside of the rear part of a vehicle. 9 is a cross-sectional view of the back door shown in FIG. 9 in the direction of arrow CC. It is a rear view of the outer panel of the part where the rear lamp for a conventional door was removed. It is a figure which shows the state which saw the lamp exchange work hole provided in the back door of the conventional vehicle from the inside of a vehicle. It is sectional drawing of the back door shown in FIG. 12 as seen by the arrow in the DD direction.

According to the present invention, in the back door lamp mounting structure of an automobile, a reinforcement member provided along the inner surface of the inner panel is fastened together with the outer panel to be constant between the reinforcement member and the outer panel for fastening the lamp housing. The gist is that the closed cross-sectional space of the lamp member is formed to improve the rigidity and torsional strength of the lamp member mounting portion.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the drawings are schematic, and the arrangement of each part and the ratio of dimensions do not always match the actual ones.

FIG. 1 is a rear perspective view of a hatchback type automobile provided with a back door lamp mounting reinforcing structure for the automobile according to the embodiment of the present invention.
As shown in this figure, for example, a back door 2 that can be opened and closed upward is attached to the rear portion of a so-called one-box car called a compact car, a station wagon, or a minivan.

FIG. 2 is a rear perspective view when the back door 2 of the automobile according to the embodiment of the present invention is opened. As shown in this figure, the back door 2 of a so-called one-box car can open and close a wide area door at a large angle upward with the upper end of the rear part of the vehicle as a fulcrum, so that luggage can be taken in and out of the trunk from the rear part of the vehicle. It has conveniences such as being able to easily secure a large capacity of the trunk.

FIG. 3 is a diagram showing a state in which the inner panel 21 constituting the back door 2 is viewed from the front of the vehicle. As shown in this figure, the inner panel 21 of the back door 2 has a substantially thin rectangular shape having a partial bend in a side view, has a substantially rectangular opening 28 in the upper half portion, and has a substantially rectangular opening 28 in the upper half portion, and is a lower peripheral edge of the opening 28. A beam portion 27 is extended in the vehicle width direction, and both ends of the beam portion 27 are joined to the beam portion 3 formed on the outer periphery of the back door 2, and the beam portion 3 and the beam portion 27 as a whole are substantially abbreviated. It forms a sun-shaped beam.

That is, the back door 2 is configured by connecting and fixing the inner panel 21, the outer panel 20 forming the exterior of the automobile, and the reinforcement 23 for reinforcement by welding or the like. Here, the inner panel 21, the outer panel 20, and the reinforcement 23 are formed by, for example, pressing a cold-rolled steel plate for an automobile or a high-strength steel plate for an automobile, and the back door 2 is formed in FIG. 9 of a conventional example. As described in the above section, the inner panel 21 arranged inside the vehicle, the outer panel 20 arranged outside the vehicle, and the reinforcement 23 inserted between the two are connected by welding or the like. It is fixed and constitutes the skeleton of the back door 2.

The opening 28 formed in the upper half of the back door 2 has an opening in a shape that follows the shape of the back door glass 4, and the back door glass 4 is fitted therein and the peripheral edge thereof is adhered. It is fixed by adhering with a material or the like.

Further, as shown in FIG. 2, the back door 2 is attached so that both ends of the upper end portion and the roof portion of the upper part of the rear end of the vehicle can be opened and closed vertically via hinges 6 and 6, so-called flip-up type. Forming the rear door for the vehicle. The hinges 6 and 6 act as fulcrums for opening and closing operations, and are made of, for example, stainless steel, and the back door 2 is connected to the upper part of the rear end of the vehicle by using bolts and nuts.

Further, dampers 5 and 5 are provided on the outer side surfaces of the vertical beam portion 3 formed on the back door 2, respectively, as in the conventional example shown in FIG.
The damper 5 is composed of, for example, a piston rod 5b and a cylinder 5a, and oil and gas are sealed inside the cylinder 5a, and the piston rod expands or contracts when the back door 2 is opened or closed. When closing, the closing speed is buffered by hydraulic pressure, and when opening, it is urged by the expansion of gas and hydraulic pressure to perform a flip-up operation.

Specifically, as shown in FIG. 2, the dampers 5 and 5 are connected to the upper part of the rear pillar 9 on the right side of the cylinder 5a on the right side of the cylinder 5a by a fixture 54. Has been done. Further, the piston rod 5b side is connected to the right side surface of the beam portion 3 on the lower end peripheral edge of the opening 28 of the back door 2 by an attachment 52 (not shown).

Similarly, in the damper 5 on the left side, the cylinder 5a side is connected to the upper part of the rear pillar 9 on the left side inside the vehicle by a fixture 56. Further, the piston rod 5b side is connected to the left side surface of the beam portion 3 on the lower end peripheral edge of the opening 28 of the back door 2 by the attachment 52.

Further, as shown in FIG. 1, rear lamps 11 and 11 for doors and rear lamps 12 and 12 for vehicles extending from the back door 2 to the rear end of the vehicle body are provided at both ends of the rear end portion of the vehicle body in the vehicle width direction. It is installed. That is, the rear lamps 11 and 11 for the door are attached to the back door 2, and the rear lamps 12 and 12 for the vehicle are attached so as to extend from both ends of the rear end portion of the vehicle body to the rear fender panel 7. Then, when the back door 2 is closed, the rear lamp 11 for the door and the rear lamp 12 for the vehicle are connected to each other, and both lamps form one rear lamp.

The rear lamp 11 for a door and the rear lamp 12 for a vehicle are composed of, for example, a red tail lamp, a brake lamp, a white back lamp (reverse lamp), a yellow turn signal lamp, and the like, and have an LED as a light source and a printed substrate on which the LED is mounted. It is composed of a wire harness 31 with a connector 32 for connecting a printed circuit board, a reflector that reflects LED light, a lens that collects or diffuses LED light, and a lamp housing 10 that houses these. There is.
The rear lamp 11 for the door and the rear lamp 12 for the vehicle are lit or blinking so that the vehicle can be operated smoothly.

Next, the mounting structure of the door rear lamps 11 and 11 in the back door 2 will be described. FIG. 4 is an enlarged view of a peripheral portion of the lamp replacement work hole 25 when the reinforcement 23 or the like is attached to the inner panel 21 in FIG. In FIGS. 3 and 4, a substantially rectangular lamp replacement work hole 25 is formed in the vicinity of the beam portion 3 in the lower half of the inner panel 21, and is substantially in the center of the right side of the lamp replacement work hole 25. A semi-circular notch 25a is provided.

The reinforcement 23 is arranged on the side of the inner panel 21 facing the outer panel 20, and is connected and fixed to the inner panel 21 by welding. The lamp replacement work hole 35 is formed in the reinforcement 23 at a position corresponding to the lamp replacement work hole 25, and is substantially a semicircle at a position corresponding to the notch 25a of the lamp replacement work hole 25. A notch 35a is provided. Therefore, the lamp replacement work hole 35 penetrated through the reinforcement 23 and the lamp replacement work hole 25 of the inner panel 21 are overlapped to form one hole that communicates with each other.

Further, in the lamp replacement work hole 35 of the reinforcement 23, substantially rectangular connecting fixing portions 36, 36 are convexly provided at both upper and lower corners of the vehicle outer side (OUT). In the center of the connecting fixing portions 36, 36, fixing holes 35b, 35b for connecting to the outer panel 20 are formed.

FIG. 5 is a diagram showing a state in which the outer panel 20 of the automobile according to the embodiment of the present invention is viewed from the rear of the vehicle. The outer panel 20 is provided with a recess 13 for mounting the lamp housing 10 as shown in the cross-sectional view taken along the line AA in FIG. In this figure, the recess 13 is formed in two stages in this embodiment according to the shape of the back surface of the lamp housing 10. Then, as shown in FIG. 5, a substantially long gourd-shaped lamp replacement work hole 15 facing diagonally upward from the outside of the vehicle is provided through the central portion of the lowermost stage of the recess 13.

Further, in the recess 13, positioning holes or mounting holes 14a to 14e for mounting the rear lamp 11 for the door are formed in the periphery of the lamp replacement work hole 15.

FIG. 7 is a view showing a state in which the lamp replacement work holes 15 and 35 when the door rear lamp 11 is attached to the recess 13 of the back door 2 of the automobile according to the embodiment of the present invention are viewed from the inside of the vehicle.

In this figure, a lamp replacement work hole 35 penetrated through the reinforcement 23 is opened on the inner side of the vehicle of the beam portion 3 to look into the back surface of the outer panel 20. Further, the lamp housing 10 of the rear lamp 11 for the door looks into the back surface from the lamp replacement work hole 15 formed through the outer panel 20. Then, the lamp housing 10 and the outer panel 20 are connected and fixed to the connecting fixing portions 36, 36 which are convexly provided on the reinforcement 23 by using a fastening member 41 such as a screw. The details will be described later.

Further, a wire harness 31 for power supply extends from the back surface of the lamp housing 10 to the rear lamp 11 for the door, and a connector 32 for connection is attached to the tip of the wire harness 31. A connector of a wire harness 31 for power supply (not shown) is connected to the connector 32 for connection, and power is supplied from the battery.

Next, the mounting reinforcement structure of the rear lamp 11 for the door of the back door 2 will be described in more detail. FIG. 8 is a cross-sectional view of the back door shown in FIG. 7 viewed from above in the BB direction, that is, a vehicle. In this figure, the outer panel 20 extends substantially linearly from the peripheral edge end 29 toward the inside of the vehicle (to the right in FIG. 8). The cross-sectional shape of the outer panel 20 is the cross-sectional shape of the bottom surface of the recess 13. Further, the outer panel 20 is connected and fixed to the inner panel 21 at the peripheral end 29 by bending, overlapping and welding so as to wrap the inner panel 21.

When the inner panel 21 is extended toward the inside of the vehicle, it immediately bends forward in the vehicle, then extends inward the vehicle, and further bends rearward inside the vehicle to form a substantially U-shaped cross section. .. Similarly, the reinforcement 23 is similarly bent inward of the vehicle and then extended inward of the vehicle, and further bent rearward of the vehicle and then extended inward of the vehicle to form a substantially U-shaped cross section. It is formed. Then, the reinforcement 23 is inserted into the vehicle rear side of the inner panel 21, that is, the side facing the outer panel 20, overlapped with the inner panel 21, and is connected and fixed at a predetermined position by welding.
As a result, the inner panel 21 is formed with a beam portion 3 having a substantially U-shaped cross section that rises inward of the vehicle along the peripheral edge thereof.

A lamp replacement work hole 25 is opened in the immediate vicinity of the beam portion 3 on the vehicle inner side (right side in FIG. 8), and the inner panel 21 extending inward of the vehicle hits the outer panel 20. I can't touch it. However, the connecting fixing portions 36, 36 projecting to the front (F) of the vehicle at both the upper and lower corners of the outside (OUT) of the vehicle of the lamp replacement work hole 35 penetrating the reinforcement 23 are shown in FIG. As shown, it extends to the inside of the vehicle (to the right in FIG. 8) and is configured to come into contact with the back surface of the recess 13 provided in the outer panel 20.

The lamp housing 10 is fitted into the recess 13 formed on the outer surface of the outer panel 20 shown in FIGS. 5 and 6 as shown in FIGS. 7 and 8, and the back surface thereof is in contact with the recess 13.
As described above, the back surface of the recess 13 is in contact with the connecting fixing portions 36, 36 which are convexly provided on the reinforcement 23.

Then, in the inside of the vehicle of the lamp housing 10, the notch 25a provided in the lamp replacement work hole 25 shown in FIG. 3 and the notch 35a provided in the lamp replacement work hole 35 are the outer panel shown in FIG. As shown in FIG. 7, the inner panel 21, the outer panel 20, and the reinforcement 23 are overlapped with each other through the mounting hole 14c formed through the 20 and connected by co-tightening using a fastening member 41 such as a screw. It is fixed.

Further, as shown in FIGS. 7 and 8, the connecting fixing portion is provided on the outside of the vehicle of the lamp housing 10 through the mounting holes 14b and 14d formed in the recess 13 of the outer panel 20 shown in FIG. The fixing holes 35b and 35b formed through the 36 and 36 are fastened together by using a fastening member 41 such as a screw.

By connecting and fixing the inside and outside of the vehicle in this way, the joint body composed of the inner panel 21 and the reinforcement 23 formed in a substantially U-shaped cross section is surrounded by the outer panel 20. A closed cross-sectional space having a substantially trapezoidal cross section can be formed.

With the above configuration, in the back door lamp mounting structure of an automobile in which the rear lamp 11 for a door extending from the back door 2 to the rear end of the vehicle body is attached to both ends of the rear end of the vehicle body in the vehicle width direction. A single reinforcement 23 provided along the inner panel 21 and an outer panel 20 for forming the lamp housing 10 are jointly fixed and fixed, and a constant closed cross section is formed between the reinforcement 23 and the outer panel 20. Since the space is formed, it is possible to provide an automobile back door lamp mounting reinforcing structure configured to improve the rigidity and torsional strength of the structure of the lamp member mounting portion.

In the above-described embodiment, the fastening member 41 has been described as a screw, but the fastening member 41 is not limited to the screw, and bolts / nuts, snap-fits, and the like may be used at all. Further, the material of the inner panel 21 and the outer panel 20 is not limited to the steel plate, and a plastic material may be used at all.

Further, in the above embodiment, the structure in which the lamp housing 10 is fastened together with the inner panel 21, the outer panel 20, or the reinforcement 23 has been described, but the lamp housing 10 is fixed to the outer panel 20 by screwing or the like, and the lamp housing 10 is fixed to the outer panel 20 by screwing or the like. The outer panel 20 may be fastened together with the inner panel 21 or the reinforcement 23.

The present invention is not limited to the above-described embodiment, and the configurations disclosed in the above-described embodiments are replaced with each other or the combinations are changed, known inventions, and each configuration disclosed in the above-described embodiments. It also includes a configuration in which the above are mutually replaced or the combination is changed. Further, the technical scope of the present invention is not limited to the above-described embodiment, but extends to the matters described in the claims and their equivalents.

1 Body 2 Backdoor 3,27 Beam 4 Backdoor glass 5 Dunbar 6 Hinge 9 Rear pillar 10 Lamp housing 11 Rear lamp for door 12 Rear lamp for vehicle 13 Recess 14a to e Mounting holes 15, 25, 35 Lamp replacement work hole 20 Outer Panel 21 Inner panel 23 Reinforcement 28 Opening 35b Fixing hole 36 Connecting fixing part 41 Fastening member

Claims (2)

In the back door lamp mounting structure of an automobile, the reinforcement member provided along the inner panel and the outer panel for forming the lamp housing are jointly tightened and joined to form a constant closed cross section between the reinforcement member main body and the outer panel. An automobile back door lamp mounting reinforcement structure characterized in that a space is formed to improve the rigidity and torsional strength of the structure of the lamp member mounting portion. The joint of the reinforcement member and the outer panel for forming the lamp housing by co-tightening is projected to the front of the vehicle at both the upper and lower corners of the lamp replacement work hole formed in the reinforcement on the outside of the vehicle. The back door lamp mounting reinforcing structure for an automobile according to claim 1, wherein the fixing portion for connection and the recess provided in the outer panel are in contact with each other and can be fastened.

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