JPH046968Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to the vehicle body structure of the back door lock striker attachment part, and involves providing a hole in the lower back inner panel that forms the inner peripheral surface of the back door opening through which the latch member on the back door side can pass, and making it visible through this hole. In a car body structure in which a back door striker is arranged, it is possible to effectively prevent water from entering the vehicle interior through the hole, and the space under the striker can be used more effectively. Concerning what has been done.

[Conventional technology]

A structure in which a hole is provided in the lower back inner panel, which has an inverted dish-shaped cross section and forms the inner circumferential surface of the back door opening, and a back door lock striker is arranged so as to face through the hole is described, for example, in Japanese Utility Model Application No. 54-56325. It is shown. In this structure, an inverted U-shaped strainer is fixed to a reinforcement welded to the back of a hole in the lower back inner panel so that it spans in the front and back direction, and when the back door is closed, the latch member of the back door is inserted through the hole. The lower buck is adapted to extend into the inner panel and engage the striker there. With this structure, the back door lock striker does not form a protrusion on the inner periphery of the back door opening, so loading and unloading beyond the back door opening can be carried out smoothly.

[Problem that the invention attempts to solve]

However, with the above structure, there is a problem in that rainwater enters the inside of the lower back through the hole made in the lower back inner panel to expose the back door striker. In order to drain water that has entered the inside of the lower back, it is possible to make drainage holes in appropriate places, but even if you do this, for example, water may get into the gaps between the joints of panels, or water may leak inside the lower back. It has not been possible to actively prevent water from flowing in the lateral direction, and it has not been possible to effectively prevent rust from occurring due to such water. In addition, in order to bring back lock striker,
Since there is a large opening in the lower back inner panel, the strength of the vehicle body structure in this area is sufficient to support the back door lock striker, which performs the impact engagement function with the latch member when the back door closes. It was not possible to secure the This idea was devised under the above circumstances, and it solves the above conventional problems and allows the rear door striker to enter the inside of the lower back part through a hole drilled in the lower back inner panel for facing the striker. Water can be effectively discharged to the outside while actively preventing it from entering the joints between panels or flowing laterally. Moreover, as shown above, the large opening in the lower back inner panel The object of the present invention is to provide a new car body structure that can significantly increase the strength of the car body as a support part for a backdoor striker, despite the fact that it is provided with a rear striker.

[Means to solve the problem]

In order to solve the above problem, this invention adopts the following means. That is, the lower back part is formed by overlappingly welding the rear edge outward flange of the lower back inner panel, which has a substantially U-shaped cross section with the open part facing downward, to the upper surface of the outward flange formed on the upper part of the lower back outer panel. In addition, in the vehicle rear structure, which is formed by providing an opening hole in the lower back inner panel through which the back door lock striker faces, an upwardly directed flange having a predetermined width is formed on both sides at a portion located below the opening hole. The reinforcement, which is tilted rearward as a whole, is substantially spanned between the inner surface of the front wall of the lower back inner panel and the inner surface of the lower back outer panel, and the lower back outer panel side joint part of this reinforcement is formed into a downward flange shape as described above. A water drain bead is provided at the joint between the reinforcement and the lower back outer panel, and the rear edge is connected to the outward flange of the lower back outer panel and the outward facing flange of the lower back inner panel in the space between the reinforcement and the opening hole. The present invention is characterized in that a retainer is provided which is sandwiched between the reinforcement and the flange by polymerization welding and whose bottom surface is welded to the reinforcement, and the back-locked striker is fixed onto the retainer.

[Action and effect]

Water that has entered the lower back through an opening formed in the lower back inner panel falls onto the reinforcement located below this opening. Since this reinforcement has upward flanges formed at both ends, the flanges actively prevent water from spreading laterally inside the lower back portion. Since this reinforcement as a whole is inclined rearward, water on the reinforcement flows rearward and reaches the joint between the reinforcement and the lower back outer panel. Since this joint is provided with a drainage bead, the water guided to this joint is quickly discharged to the outside from this drainage bead. As described above, in the vehicle body structure of the back door striker attachment part of the present invention, the reinforcement that spans between the lower back inner panel and the lower back outer panel guides water that has entered the lower back part to a predetermined drainage bead. The conventional problem of rainwater spreading freely through the lower back and getting into the gaps between panel joints is solved. In addition, the upward flanges formed on both sides of the reinforcement not only increase the rigidity of the reinforcement itself, but also attach the retainer that fixes the back door striker to the rear edge of the lower back outer panel and lower back inner panel. The retainer, the reinforcement, and the lower back are sandwiched between both outward flanges by polymer welding, and the bottom surface is welded onto the reinforced reinforcement as described above. The outer panel forms a so-called box cross-sectional structure, thereby dramatically increasing the strength of the vehicle body structure at the rear door striker attachment portion. Furthermore, water that has entered the lower back part is reliably guided by the reinforcement and discharged to the outside, so there is no need to further provide a panel member to prevent water intrusion at the bottom of the reinforcement. Below the reinforcement, i.e.
A large vertical space can be secured below the back door lock striker mounting part. As described above, in the vehicle body structure of the back door striker attachment part in the present invention, a large opening hole is formed in the lower back inner panel so that the back door striker faces inside without protruding upward. Despite this, water that has entered this opening can be quickly discharged to the outside, and the vehicle body space below the reinforcement can be used effectively, and furthermore,
This has the excellent effect of dramatically increasing the strength of the vehicle body where the back door lock striker is attached.

[Explanation of Examples]

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. 1 and 2 show a first embodiment of the invention. Reference numeral 1 denotes a lower back inner panel that forms the inner peripheral surface of the back door opening, and has a substantially U-shaped cross section with the open part facing downward, and an outward facing flange 2 at the rear thereof.
is welded to the upper surface of the upper outward flange 4 of the lower back outer panel 3 forming the rear wall of the vehicle body below the back door. A bulging curved portion 5 is formed below the lower back outer panel 3, and forms a box cross-sectional structure in cooperation with a rear floor cross panel 6 welded to the inside thereof. Reference numeral 7 denotes a resin bumper disposed at the rear of the lower back portion formed as described above. In the center of the lower back inner panel 1,
An opening hole 8 is formed through which a back door lock striker 8a is exposed. An inverted U-shaped striker 8a disposed within this opening hole 8 is fixed onto a reinforcement 9 or a retainer 10, which is particularly constructed as follows. The reinforcement 9 is a member that spans the inner surface of the front wall 1a of the lower back inner panel 1 and the inner peripheral surface of the lower back outer panel 3 to reinforce the lower back portion and substantially supports the back door lock striker 8a. The entire structure is inclined rearward, and the front upper edge 9a is welded upwardly along the inner surface of the front wall 1a of the lower back inner panel, and the rear lower edge 9b is welded to the inner surface of the lower back outer panel 3. It is welded downward. In this example, the welded portion of the rear lower edge 9b is sandwiched between the lower back outer panel 3 and the rear floor cross panel 6. Furthermore, as clearly shown in Figure 2, the flanges 9c, 9c rise upward.
are formed on both sides in the width direction. Further, at the joint between the rear lower edge 9b of the reinforcement 9 and the lower back outer panel 3, a lower back outer panel 3 is provided.
A drainage bead 11 is formed on the side, making the upper and lower parts of this welded part communicate with each other. The retainer 10 that supports the back-locked striker 8a has a striker mounting surface 10a inclined forward, and the left and right legs 10
The bottom surfaces of b and 10b are welded to the top surface of the reinforcement 9, and the rear edge portion 10c is welded so as to be sandwiched between the overlapping joint of the lower back inner panel 1 and the lower back outer panel 3. As shown in phantom lines in FIG. 1, the latch member 13 attached to the lower part of the back door 12 enters the lower back portion through the opening hole 8 of the lower back inner panel 1 as the back door 12 is rotated to close. 8 and engages with the lower back door striker 8a. In the above configuration, rainwater that has entered the lower back portion through the opening hole 8 falls onto the reinforcement 9. This reinforcement 9 as a whole is inclined rearward and has wall-like flanges 9c, 9c formed on both sides, so that rainwater is guided rearward like a gutter. This water is then discharged to the outside through the drainage bead 11. Also,
Since the reinforcement 9, the lower back outer panel 3, and the retainer 10 form a substantially triangular closed cross-sectional structure below the opening hole 8, the back door lock striker 8a constructed in this way can be supported. The strength of the parts has improved dramatically. FIG. 3 shows a second embodiment of the invention. In this example, the front part of the retainer 10 is welded to the front wall 1a of the lower back inner panel 1, and the front part of the reinforcement 9, which has wall-like flanges 9c, 9c on both sides, is welded to the lower surface of the retainer 10. has been done. In this case, the reinforcement 9
is attached to the lower back inner panel 1 and the lower back outer panel 3 in a substantially spanning manner, and cooperates with the retainer 10 to perform the same function as the embodiment shown in FIGS. 1 and 2. Demonstrate. Similarly to the first embodiment, water that has entered through the opening hole 8 of the lower bag inner panel 1 is guided by a gutter-like reinforcement 9 and discharged from the drain beet 11.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the first embodiment of the present invention;
The figure is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a sectional view of a second embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Lower back inner panel, 1a... Front wall, 2... Outward flange, 3... Lower back outer panel, 4... Outward flange, 8... Opening hole, 8a... Back door lock striker, 9 …
...Reinforcement hose, 9c...flange.

Claims (1)

[Claim for Utility Model Registration] An outward-facing flange at the trailing edge of the lower back inner panel, which has an approximately U-shaped cross-section with the open portion facing downward, is welded to the upper surface of the outward-facing flange formed at the top of the lower back outer panel. In the vehicle body rear structure, the lower back inner panel is provided with an opening hole through which a back door lock striker faces, and a lower back part is formed with a predetermined width in a portion located below the opening hole. A reinforcement having upward flanges formed on both sides and inclined rearward as a whole is substantially spanned between the inner surface of the front wall of the lower back inner panel and the inner surface of the lower back outer panel, and the lower back outer panel side joint of this reinforcement is provided. A drain bead is provided at the joint between the reinforcement and the lower back outer panel in the form of a downward flange, and the rear edge is connected to the outward flange of the lower back outer panel and the lower back in the space between the reinforcement and the opening hole. A retainer is provided by being sandwiched and polymerized and welded to the outward facing flange of the back inner panel, and the bottom surface is welded onto the reinforcement, and the back door lock striker is fixed onto the retainer. The vehicle body structure where the back door lock striker is attached.