JPH11301519A - Car body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the assembly precision and support rigidity while controlling the weight of a car body by reliably stopping the load applied on a spare tire carrier and reliably preventing deformation and damage of a rear combination lamp and the car body outer plate thereof. SOLUTION: A reinforcement 22 is connected to a quarter inner panel 21 forming a first closed cross-section portion 23 extending vertically. A hinge reinforcement upper 24 is connected to the upper portion of the reinforcement 22 forming a second closed cross-section portion 26 and an upper portion hinge 17 is attached. Meanwhile, a hinge reinforcement lower 25 is connected to the lower portion of the reinforcement 22 forming a third closed cross-section portion 27 and a lower portion hinge 18 is attached. An upper portion flange portion 29b of a lamp housing 29 is connected to a lower surface portion 24b of the hinge reinforcement upper 24. Then, a lower portion flange portion 29c is connected to an upper surface portion 25a of the hinge reinforcement lower 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure in which a spare tire carrier for supporting a spare tire is mounted at a rear portion of the vehicle body.

[0002]

2. Description of the Related Art In some RV vehicles, a spare tire is mounted behind a back door. In this case, in a type in which the back door opens and closes upward, when the spare tire is mounted on the back door, the weight increases. A spare tire carrier is mounted on the rear pillar via a hinge separately from the back door, and a spare tire is mounted on the spare tire carrier, because the spare tire carrier may be difficult to open and close. Therefore, by rotating the spare tire carrier on which the spare tire is mounted backward and retreating from the back door, the back door can be rotated upward to open the rear opening.

When the spare tire carrier is attached to the rear pillar of the vehicle body via a hinge and the spare tire is mounted on the spare tire carrier as described above, the spare tire carrier is reduced in size due to a problem such as appearance.
The spare tire of the V-vehicle is heavy, so it will bend after assembly work and the assembly accuracy will deteriorate, and in order to cope with the repeated load caused by the vertical movement of the spare tire when traveling on uneven roads It is necessary to secure a certain degree of rigidity and strength at the hinge mounting portion.

A conventional spare tire carrier mounting structure is disclosed, for example, in Japanese Patent Application Laid-Open No. 7-96863.

In this publication, a first reinforcement is mounted on an outer surface of an inner plate, and a second reinforcement along an upper edge of a housing of a rear combination lamp is spotted on an upper portion of the first reinforcement. While welding, a third portion along the lower edge of the housing at the bottom of the first reinforcement
The reinforcement is spot-welded, and the second reinforcement and the third reinforcement are provided with a pivot portion for fixing the hinge of the spare tire carrier.

Accordingly, since the first reinforcement has a shape surrounding the housing, rigidity around the housing is secured, deformation around the housing due to the load of the spare tire carrier is prevented, and damage to the rear combination lamp is prevented. In this case, it is only necessary to increase the thickness of the small parts of the second and third reinforcements on which the load of the spare tire carrier acts intensively, and it is possible to suppress an increase in the weight of the vehicle body.

[0007]

In the conventional spare tire carrier mounting structure described above, the first reinforcement is formed by simply increasing the thickness of the second reinforcement and the third reinforcement, which are small parts. Because of the shape surrounding the housing, the rigidity around the housing is secured,
Although the deformation around the housing due to the load of the spare tire carrier can be prevented, the spare tire of the RV vehicle is large and heavy, and a large load acts when traveling on uneven roads. Not enough.

That is, in this conventional mounting structure for a spare tire carrier, the rigidity of the component alone is ensured only by increasing the thickness of the second reinforcement and the third reinforcement, but each reinforcement is It is a cantilever support in which only the side portions are spot-welded to the first reinforcement,
The upper or lower part is spot-welded to the housing. Therefore, when the load of the spare tire carrier acts on the second reinforcement or the third reinforcement, the upper and lower ends of the second and third reinforcements are free with respect to the inner plate and the first reinforcement. In this state, the reinforcements may be bent and the vehicle body outer panel may be deformed or damaged.

Although the first reinforcement is joined to the outer surface of the inner plate, the two members are in close contact with each other, so that the first reinforcement is similar to the case where the inner plate is simply thickened. It hardly contributes to the increase in rigidity of the peripheral portion connecting the reinforcement, the housing and the third reinforcement, and the first reinforcement and the housing have to be thickened.
This will increase the weight of the vehicle.

The present invention has been made to solve the above-described problem, and it is intended to reliably receive a load acting on a spare tire carrier and to reliably prevent deformation and breakage of a rear combination lamp and a vehicle body outer plate thereof. It is another object of the present invention to provide a vehicle body structure in which assembly accuracy and support rigidity are improved while suppressing weight increase of the vehicle body.

[0011]

In the vehicle body structure of the present invention for achieving the above object, an upper hinge is provided above a ramp provided on a rear pillar of the vehicle body, and a lower hinge is provided below the ramp. In a vehicle body structure in which a spare tire carrier is supported on a vehicle body, a first closed cross section extending vertically by joining a front portion and a rear portion of a first reinforcement to a vehicle body outer surface of an inner plate facing a room inside a rear pillar is provided. The first closed cross-section portion of the vehicle body outer surface is joined to a lamp housing surrounding the lamp, and the first closed cross-section portion of the vehicle body outer surface is joined to a second reinforcement supporting an upper hinge. A third reinforcement supporting a lower hinge is joined to an outer surface of the vehicle body of the first closed section to form a third closed section, and an upper portion of the lamp housing is joined to the second reinforcement. With the lower part It is joined to the reinforcement.

Therefore, since the quarter inner panel and each reinforcement are joined to form the first, second, and third closed cross-sections, a large load acts on the hinge attachment portion of the spare tire carrier. First, local deformation is prevented by the second and third closed cross-sections, and the second and third closed cross-sections are connected vertically by the first closed cross-section and the housing. Edge determination of the entire pillar is prevented, and it is possible to prevent deformation and breakage of the quarter inner panel and prevent deterioration of assembly accuracy due to bending due to the weight of the spare tire without significantly increasing the thickness of each member.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a longitudinal section (II section of FIG. 4) of a rear pillar showing a vehicle body structure according to an embodiment of the present invention, FIG.
1 shows a cross section taken along the line II-II of FIG. 1, FIG. 3 shows a schematic diagram showing a support portion of the lamp housing, and FIG.

As shown in FIG. 4, the vehicle body structure of the present embodiment is applied to an RV vehicle. In this RV vehicle, a back door 12 that opens and closes upward at the rear of a vehicle body 11 is rotatable. A spare tire carrier 14 is rotatably mounted on the rear pillar 13 on one side while being mounted. The spare tire carrier 14 has upper and lower support arms 15,
A base end of the support arm 15 is rotatably attached to the rear pillar 13 by hinges 17 and 18, respectively. A spare tire T can be attached to a distal end of the support arm 15, 16. Therefore, the spare tire carrier 14 on which the spare tire T is mounted is locked to the back door 12 by a lock mechanism (not shown). When the lock mechanism is released, the spare tire carrier rotates backward and retreats from the back door 12. By doing so, the back door 12 can be pivoted upward to open the rear opening.

In the rear pillar 13 of the vehicle body 11, as shown in FIGS. 1 to 3, a reinforcement (first reinforcement) 22 is provided at a predetermined distance on the outer side of the quarter inner panel 21 constituting the interior wall of the vehicle body. The front end portion 22a and the rear end portion 22b are joined to the quarter inner panel 21 by welding to form a first closed section 23 extending in the vertical direction. Although not shown, the upper end and the lower end of the reinforcement 22 are also joined to the quarter inner panel 21 by welding.

A substantially U-shaped hinge reinforcement upper (second reinforcement) 24 is fixed to the upper portion of the reinforcement 22 on the outer side of the vehicle body.
A substantially U-shaped hinge reinforcement lower (third reinforcement) 25 is fixed to a lower portion on the outside of the vehicle body.
The hinge reinforcement upper 24 has an upper surface portion 24a, a lower surface portion 24b, and a support surface 24c facing outward formed integrally by bending, and an upper end flange portion 24d and a lower end flange portion 24e continuous with the upper surface portion 24a and the lower surface portion 24b have phosphorus. A second closed section 26 extending in the left-right direction is formed by welding to the force 22. The hinge reinforcement lower 25 has an upper surface 25a, a lower surface 25b, and a support surface 25c facing outward formed integrally by bending, and has an upper flange portion 25d and a lower flange portion 25e continuous with the upper surface portion 25a and the lower surface portion 25b. Is welded to the reinforcement 22 to form a third closed section 27 extending in the left-right direction.

The support surface 24c of the hinge reinforcement upper 24 and the support surface 2 of the hinge reinforcement lower 25
A quarter outer panel 28 is in close contact with 5c, and an upper bracket 17a constituting the upper hinge 17 of the spare tire carrier 14 is fixedly fastened to the support surface 24c side of the hinge reinforcement upper 24 by bolts B and nuts N, A support shaft 17b is attached to the upper bracket 17a.
Thereby, the base end of the support arm 15 is rotatably mounted. The lower hinge 1 of the spare tire carrier 14 is provided on the support surface 25c side of the hinge reinforcement lower 25.
8 is fastened and fixed together by bolts B and nuts N.
The base end of the support arm 16 is rotatably attached to a by a support shaft 18b.

A box-shaped lamp housing 29 is provided between the hinge reinforcement upper 24 and the hinge reinforcement lower 25. The lamp housing 29 is for mounting a rear combination lamp unit 30 and is formed by bending a peripheral portion of a plate material, and has a bottom portion 29a, upper and lower flange portions 29b and 29c, and left and right flange portions 29d and 29e. I have. And
The bottom portion 29a of the lamp housing 29 has an uneven shape, and a plurality of portions are formed on the reinforcement 22 so that the upper and lower ends sandwich the lower end flange portion 24e of the hinge reinforcement upper 24 and the upper end flange portion 25d of the hinge reinforcement lower 25. Closely adhered and welded. The upper flange portion 29b of the lamp housing 29 is tightly welded to the lower surface portion 24b of the hinge reinforcement upper 24, while the lower flange portion 29c is closely welded to the upper surface portion 25a of the hinge reinforcement lower 25. Have been.

The left flange 29d of the lamp housing 29 is joined to the quarter outer panel 28, and the right flange 29e is joined to the bracket 31 joined to the quarter inner panel 21 and the reinforcement 22.

The rear combination lamp unit 30 is a unit of a stop lamp, a tail lamp, a turn signal lamp and the like, and includes a casing 32 fixed to a lamp housing 29 and a lamp 33.
And a lens 34.

As described above, in the vehicle body structure of the present embodiment, the quarter inner panel 2 forming the rear pillar 13
The first reinforcement section 22 is joined to the outside of the first section 1 to form a first closed section 23 extending in the vertical direction.
The hinge reinforcement upper 24 is joined to the upper part of the
And the upper hinge 17 of the spare tire carrier 14 is attached to the hinge reinforcement upper 24, and the hinge reinforcement lower 25 is joined to the lower part of the reinforcement 22 to form a third closed cross section. 27, the lower hinge 18 is attached to the hinge reinforcement lower 25, and the upper flange portion 29b of the lamp housing 29 is formed.
Is joined to the lower surface 24 b of the hinge reinforcement upper 24, while the lower flange portion 29 c is joined to the upper surface 25 a of the hinge reinforcement lower 25.

Accordingly, by joining the quarter inner panel 21 and the respective reinforcements 22, 24, 25, the first, second, and third closed sections 23, 26, 2 independent of each other are provided.
7, and a lamp housing 29 is joined so as to connect the second and third closed sections 26 and 27, and the lamp housing 29 is formed of the three closed sections 23, 26 and 27.
27, sufficient strength is ensured. Therefore, even if the vehicle travels on uneven roads and the vertical load acts on the spare tire carrier 14,
Each hinge 17, 1 supporting the spare tire carrier 14
8 is supported by each of the reinforcements 24 and 25 forming the first and second closed cross-sections 26 and 27, so that the load acting on the spare tire carrier 14 can be reliably received. As a result, the support rigidity of the spare tire carrier 14 is improved, the mounting accuracy is deteriorated due to the bending after the spare tire carrier 14 is assembled, and the spare tire carrier 14 is Deformation and breakage of the quarter outer panel 28 near the hinge attachment portion can be prevented.

In this case, the three closed sections 23,
Since the strength of the periphery of the lamp housing 29 is ensured by forming 26 and 27, the rigidity can be increased without increasing the thickness of the quarter inner panel 21 and each of the reinforcements 22, 24, 25, etc. The assembly accuracy and the support rigidity can be improved while suppressing weight increase.

[0025]

As described in detail in the above embodiment, according to the vehicle body structure of the present invention, the front portion and the rear portion of the first reinforcement are joined to the vehicle body outer surface of the inner plate facing the indoor side of the rear pillar. Forming a first closed cross-section extending in the up-down direction, joining a lamp housing surrounding the lamp to an outer surface of the vehicle body of the first closed cross-section, and supporting an upper hinge on an outer surface of the vehicle body of the first closed cross-section. To form a second closed section, and a third reinforcement for supporting a lower hinge is formed on the outer surface of the vehicle body of the first closed section to form a third closed section. Since the upper part of the lamp housing is joined to the second reinforcement and the lower part is joined to the third reinforcement, the quarter inner panel and each reinforcement form first, second, and third closed cross-sections. By being joined to the lamp The rug is surrounded by three closed cross-sections located at the periphery and can secure sufficient strength. Even if the load acting on the spare tire carrier acts on the second and third reinforcements, 2nd, 3rd
Local deformation is prevented by the closed cross section of
The first closed cross-section and the housing are vertically connected to each other, so that the side pillars of the entire rear pillar can be prevented, and the quarter inner panel can be deformed without significantly increasing the thickness of each member. It is possible to prevent damage and prevent deterioration of assembly accuracy due to bending due to the weight of the spare tire.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view (II section in FIG. 4) of a rear pillar representing a vehicle body structure according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a schematic diagram illustrating a support portion of the lamp housing.

FIG. 4 is a schematic view of a rear portion of a vehicle to which the vehicle body structure according to the embodiment is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Body 12 Back door 13 Rear pillar 14 Spare tire carrier 15, 16 Support arm 17, 18 Hinge 21 Quarter inner panel 22 Reinforce (first reinforcement) 23 First closed section 24 Hinge reinforcement upper (Second phosphorus) Force) 24a Upper surface portion 24b Lower surface portion 24c Support surface 24d Upper flange portion 24e Lower flange portion 25 Hinge reinforcement lower (third reinforcement) 25a Upper surface portion 25b Lower surface portion 25c Support surface 25d Upper flange portion 25e Lower flange portion 26 Second Closed cross section 27 Third closed cross section 29 Lamp housing 29a Bottom 29b Upper flange 29c Lower flange 28 Quarter outer panel 30 Rear combination lamp unit

Continued on the front page (72) Inventor Makoto Maeno 5-3-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation

Claims (1)

[Claims] 1. A vehicle body structure in which an upper hinge is provided above a ramp provided on a rear pillar of a vehicle body and a lower hinge is provided below the lamp, and a spare tire carrier is supported by the vehicle body via the upper hinge. The front and rear portions of the first reinforcement are joined to the body outer surface of the facing inner plate to form a first closed cross section extending vertically, and the ramp is surrounded by the vehicle body outer surface of the first closed cross section. A lamp housing is joined, and a second reinforcement supporting the upper hinge is joined to an outer surface of the vehicle body of the first closed section to form a second closed section, and the vehicle body of the first closed section is formed. A third reinforcement supporting the lower hinge is joined to an outer surface to form a third closed section, and an upper portion of the lamp housing is joined to the second reinforcement and a lower portion is joined to the third reinforcement. did A body structure characterized by that: