Vehicle body fastening structure

Abstract

This prevents interference between the first and second body components in areas other than the fastening points. [Solution] The vehicle body fastening structure is applied to the side sill 10 and the vehicle body 12. The side sill 10 is formed by extrusion molding and has a first projection 10G extending in a first direction. The vehicle body 12 constitutes another part of the vehicle and is formed by casting and has a second projection 12B extending in a second direction perpendicular to the first direction. The first projection 10G and the second projection 12B are joined by fastening with the surface of the first projection 10G on the end side in the protruding direction and the surface of the second projection 12B on the end side in the protruding direction in contact with each other.

Description

Technical Field

[0001] The present invention relates to a vehicle body fastening structure.

Background Art

[0002] Patent Document 1 below discloses a vehicle body lower side structure that realizes an improvement in the relative mounting accuracy between a side sill cover panel and a fender panel. The vehicle body lower side structure described in this document includes a side sill that forms the lower side of the vehicle body and extends in the longitudinal direction of the vehicle body, a side sill cover panel that covers the side sill from the outside and forms a part of the outer surface of the vehicle body, and a fender panel that forms the other part of the outer surface of the vehicle body adjacent to the front portion of the side sill. Further, a bracket that extends forward of the side sill is supported at the front end portion of the side sill. By attaching the side sill cover panel and the fender panel to the extending portion of the bracket, it is possible to improve the relative mounting accuracy between the side sill cover panel and the fender panel.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when fastening and fixing a first vehicle body component formed by casting or extrusion molding and a second vehicle body component formed by casting or extrusion molding, due to variations in the shapes of the respective components, it is conceivable that the first vehicle body component and the second vehicle body component interfere with each other at portions other than the fastening location, but the configuration described in Patent Document 1 above does not consider this point.

[0005] In consideration of the above facts, the present invention aims to provide a vehicle body fastening structure that can suppress interference between the first vehicle body component and the second vehicle body component in areas other than the fastening points. [Means for solving the problem]

[0006] The first embodiment of the vehicle body fastening structure comprises a first vehicle body component which constitutes a part of the vehicle and is formed by casting or extrusion molding and has a first projection extending in a first direction, and a second vehicle body component which constitutes another part of the vehicle and is formed by casting or extrusion molding and has a second projection extending in a second direction perpendicular to the first direction, wherein the first projection and the second projection are fastened together with the surface of the first projection on the tip side in the protruding direction and the surface of the second projection on the tip side in the protruding direction in contact with each other.

[0007] In the first embodiment of the vehicle body fastening structure, the first projection of the first vehicle body component and the second projection of the second vehicle body component are joined by fastening while the surfaces of the first projection on the leading edge side in the protruding direction and the surfaces of the second projection on the leading edge side in the protruding direction are in contact. In this configuration, even if variations in shape occur due to casting or extrusion molding, interference between the first vehicle body component and the second vehicle body component in areas other than the fastening points of the first and second projections can be suppressed.

[0008] The second embodiment of the vehicle body fastening structure is the vehicle body fastening structure of the first embodiment, wherein the first vehicle body component is a side sill formed by extrusion molding and having a first projection that extends in the longitudinal direction of the vehicle and protrudes toward the upper side of the vehicle, and the second vehicle body component is a vehicle body formed by casting and having a second projection that extends in the width direction of the vehicle and protrudes toward the lower side of the vehicle.

[0009] In the second embodiment of the vehicle body fastening structure, the first projection of the side sill and the second projection are joined by fastening while the surface of the first projection of the side sill on the leading edge side in the protruding direction and the surface of the second projection of the vehicle body on the leading edge side in the protruding direction are in contact. With this configuration, even if variations in shape occur due to casting or extrusion molding, interference between the side sill and the vehicle body can be suppressed in parts other than the first and second projections which are fastening points. [Effects of the Invention]

[0010] The vehicle body fastening structure according to the present invention has the excellent effect of being able to suppress interference between the first vehicle body component and the second vehicle body component in areas other than the fastening points. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic perspective view showing the first fastening portion between the vehicle body and the side sill. [Figure 2] This is a cross-sectional view showing the first fastening portion between the vehicle body and the side sill, cut along the vehicle's vertical and vehicle width directions. [Figure 3] This is a cross-sectional view showing the second fastening portion between the vehicle body and the side sill, cut along the vehicle's vertical and vehicle width directions. [Figure 4] This is a cross-sectional view showing the first fastening portion between the vehicle body and the side sill, cut along the vertical and longitudinal directions of the vehicle. [Modes for carrying out the invention]

[0012] The following describes a vehicle body fastening structure according to an embodiment of the present invention with reference to the drawings. In each figure, arrows FR indicate the front of the vehicle, arrow UP indicates the upper side of the vehicle, arrow LH indicates the left side in the vehicle width direction (left-right direction), and arrow RH indicates the right side in the vehicle width direction (left-right direction). Furthermore, in the following description, unless otherwise specified, when the front-rear, up-down, and left-right directions are indicated, they refer to the front-rear direction of the vehicle, the up-down direction of the vehicle, and the left-right direction of the vehicle.

[0013] Figure 1 shows a disassembled perspective view of the first fastening portion 14 between the left side sill 10 and the vehicle body 12. The side sill 10 is formed by extrusion molding using a metal material such as an aluminum alloy, as an example. The vehicle body 12 is formed by casting using a metal material such as an aluminum alloy, as an example.

[0014] More specifically, as shown in Figures 2 and 3, the side sill 10 is formed in an elongated shape extending in the front-rear direction at the outer end in the vehicle width direction at the lower part of the vehicle. This side sill 10 comprises an upper wall portion 10A that extends in the front-rear direction with the vertical direction as the thickness direction, and a lower wall portion 10B that extends in the front-rear direction with the vertical direction as the thickness direction below the upper wall portion 10A. The side sill 10 also comprises an outer wall portion 10C that connects the outer (left) end of the upper wall portion 10A in the vehicle width direction and the outer end of the lower wall portion 10B in the vehicle width direction in the vertical direction, and an inner wall portion 10D that connects the inner (right) end of the upper wall portion 10A in the vehicle width direction and the inner end of the lower wall portion 10B in the vehicle width direction in the vertical direction.

[0015] As shown in Figures 1 to 4, the side sill 10 is provided with a first projection 10G that protrudes upward from the outer portion of the upper wall portion 10A in the vehicle width direction. Note that in Figure 1, the amount of protrusion of the first projection 10G relative to the upper wall portion 10A is exaggerated. This first projection 10G extends continuously in the front-rear direction. Bolt insertion holes 10H into which bolts 16 are inserted are formed in the upper wall portion 10A and the first projection 10G. In this embodiment, multiple bolt insertion holes 10H into which multiple bolts 16 are inserted are arranged at intervals in the front-rear direction. Furthermore, as shown in Figures 3 and 4, in the outer wall portion 10C and the vertical wall portion 10F, multiple bolt through holes 10J into which multiple bolts 18 pass are formed at positions offset in the front-rear direction from the multiple bolt insertion holes 10H (the area enclosed by the dashed line in Figure 4). Furthermore, in the inner wall portion 10D, multiple bolt insertion holes 10K are formed at locations corresponding to the multiple bolt passage holes 10J formed in the outer wall portion 10C and the vertical wall portion 10F, into which multiple bolts 18 are inserted.

[0016] As shown in Figures 2 to 4, the vehicle body 12 is provided with a joint wall portion 12A that extends along the front-rear direction with the vertical direction being the thickness direction. The range of this joint wall portion 12A from the center in the left-right direction to the outer end in the vehicle width direction extends along the upper wall portion 10A of the side sill 10 on the upper side of the side sill 10. As shown in Figures 1, 2, and 4, the vehicle body 12 is provided with a plurality of second protrusions 12B that project downward from the joint wall portion 12A. Note that in Figure 1, the amount of projection of the second protrusions 12B relative to the joint wall portion 12A is exaggerated. The plurality of second protrusions 12B are arranged opposite each other in the vertical direction to the plurality of first protrusions 10G provided on the side sill 10. The second protrusions 12B extend continuously in the left-right direction, which is perpendicular to the front-rear direction. The joint wall portion 12A and the second projection portion 12B have multiple bolt insertion holes 12C into which multiple bolts 16 are inserted. The vehicle body 12 also has a pair of ribs 12D that protrude downward from the inner portion in the vehicle width direction of the joint wall portion 12A. The pair of ribs 12D are spaced apart in the vehicle width direction. Furthermore, as shown in Figure 3, the vehicle body 12 has multiple boss portions 12E into which multiple bolts 18, each inserted into multiple bolt insertion holes 10K formed in the inner wall portion 10D of the side sill 10, are screwed.

[0017] As shown in Figures 1 to 4, in the configuration of this embodiment described above, bolts 16 inserted into multiple bolt insertion holes 12C on the vehicle body 12 side and multiple bolt insertion holes 10H on the side sill 10 side are screwed into multiple nuts 20 provided inside the side sill 10. As a result, the first projection 10G and the second projection 12B are fastened together with the surface (upper surface) on the tip side in the protruding direction of the first projection 10G of the side sill 10 and the surface (lower surface) on the tip side in the protruding direction of the second projection 12B of the vehicle body 12 in contact. The fastening portion between the first projection 10G and the second projection 12B will be referred to as the first fastening portion 14. In this configuration, even if variations in shape occur due to casting or extrusion molding, interference between the side sill 10 and the vehicle body 12 in parts other than the first fastening portion 14, which consists of the first projection 10G and the second projection 12B, can be suppressed. For example, even if there are variations in shape between the joint wall portion 12A of the vehicle body 12 and the upper wall portion 10A of the side sill 10, interference between the side sill 10 and the vehicle body 12 can be suppressed in portions other than the first fastening portion 14, which consists of the first projection 10G and the second projection 12B.

[0018] Furthermore, bolts 18 inserted into multiple bolt insertion holes 10K on the side sill 10 are screwed into multiple boss portions 12E provided on the vehicle body 12. As a result, the inner wall portion 10D of the side sill 10 and the boss portions 12E of the vehicle body 12 are in contact and fastened together. The fastening portion between the inner wall portion 10D and the boss portions 12E will be referred to as the second fastening portion 22. In this way, by providing the second fastening portion 22 in addition to the first fastening portion 14, the vehicle body 12 can be more firmly fixed to the side sill 10.

[0019] In this embodiment, an example has been described in which the vehicle body fastening structure according to the present invention is applied to the fastening portion between the side sill 10 and the vehicle body 12, but the present invention is not limited thereto. The vehicle body fastening structure according to the present invention can be applied to the fastening portion between a first vehicle body component formed by casting or extrusion molding and a second vehicle body component formed by casting or extrusion molding.

[0020] Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and it is needless to say that various modifications can be made and implemented within the scope without departing from the gist of the invention.

Explanation of Signs

[0021] 10 Side sill (first vehicle body component part) 10G First protrusion 12 Vehicle body (second vehicle body component part) 12B Second protrusion

Claims

1. A first vehicle body component which constitutes part of the vehicle and is formed by casting or extrusion molding, and has a first projection extending in a first direction, A second vehicle body component, which constitutes another part of the vehicle and is formed by casting or extrusion, and has a second projection extending in a second direction perpendicular to the first direction, Equipped with, A vehicle body fastening structure in which the first projection and the second projection are joined by fastening while the surface of the first projection on the tip side in the protruding direction and the surface of the second projection on the tip side in the protruding direction are in contact with each other.

2. The first vehicle body component is a side sill formed by extrusion molding, extending in the longitudinal direction of the vehicle and having the first projection that protrudes toward the upper side of the vehicle. The vehicle body fastening structure according to claim 1, wherein the second vehicle body component is a vehicle body formed by casting, extending in the vehicle width direction and having the second projection that protrudes toward the downward side of the vehicle.

Images