Rear body structure

Abstract

To obtain a rear body structure that allows for easy positioning of the rear floor pan relative to the vehicle body. [Solution] A processed surface portion 14A1 is formed on a part of the peripheral edge portion 14A on the rear side of the rear part 12, and a positioning projection portion 16D is provided on the rear floor pan 16.

Description

Technical Field

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

Background Art

[0002] In Patent Document 1 below, an invention related to a rear body structure is disclosed. In this rear body structure, an opening is formed at the rear end of the rear floor panel close to the left and right rear side frames. Then, a hook-shaped locking portion provided along the outer periphery of the resin rear floor pan is locked to a vertical flange rising upward on the vehicle upper side along the periphery of this opening, whereby the rear floor pan is positioned with respect to the vehicle body.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above prior art, when locking the vertical flange of the rear floor panel and the locking portion of the rear floor pan, it is necessary to align the rear floor pan while checking their positional relationship, and the positioning work between the rear floor pan and the vehicle body becomes complicated.

[0005] In consideration of the above facts, an object of the present invention is to obtain a rear body structure that can easily perform the positioning work between the rear floor pan and the vehicle body.

Means for Solving the Problems

[0006] The rear body structure according to the first embodiment comprises a body formed by casting, the rear peripheral edge of the vehicle being convex toward the front of the vehicle and recessed, and a processed surface formed on a part of the peripheral edge by processing, and a rear floor pan formed of resin, which has a positioning projection that can be positioned relative to the vehicle body by contacting the processed surface.

[0007] According to the rear body structure of the first embodiment, the peripheral edge on the rear side of the vehicle body, which is formed by casting, is convex and recessed toward the front side of the vehicle, and a rear floor pan made of resin can be placed in this portion.

[0008] By the way, when positioning the rear floor pan relative to the vehicle body, if a configuration is adopted in which, for example, a hook portion provided on the rear floor pan is locked onto a protrusion rising from the vehicle body, the positioning work between the rear floor pan and the vehicle body becomes complicated.

[0009] In this embodiment, a machined surface is formed on a portion of the rear peripheral edge of the vehicle body, and a positioning projection is provided on the rear floor pan. Therefore, in this embodiment, the rear floor pan and the vehicle body can be positioned by bringing the positioning projection into contact with the machined surface.

[0010] The vehicle understructure according to the second embodiment is characterized in that, in the vehicle understructure according to the first embodiment, the positioning projection is provided on the upper part of the rear floor pan, and the cross-section of the rear floor pan as viewed from the vertical direction of the vehicle becomes smaller as it moves from the upper side to the lower side of the vehicle.

[0011] According to the rear body structure of the second embodiment, the positioning projection is provided on the upper part of the rear floor pan. In addition, the cross-section of the rear floor pan, as viewed from the vertical direction of the vehicle, becomes smaller from the upper part of the vehicle towards the lower part of the vehicle.

[0012] Therefore, by moving the rear floor pan to the underside of the vehicle while it is in contact with the peripheral edge of the rear side of the vehicle body, the angle at which the machined surface and the positioning projection come into contact can be increased.

[0013] The rear body structure according to the third embodiment is a rear body structure according to the first embodiment or the second embodiment in which the machined surface is formed by machining and a corner portion is formed on the machined surface portion that protrudes toward the front of the vehicle, and the positioning projection portion has a contact surface portion that can abut against the corner portion.

[0014] According to the third embodiment of the rear body structure, the machined surface portion on the peripheral edge of the rear side of the vehicle body is formed by machining, ensuring the precision of the machined surface portion. Furthermore, the machined surface portion has a corner portion that protrudes toward the front of the vehicle, and the positioning projection portion is provided with a contact surface portion that can abut against the corner portion. Therefore, the corner portion of the machined surface portion can be used as a guide for the contact surface portion of the positioning projection portion to position the rear floor pan and the vehicle body. [Effects of the Invention]

[0015] As described above, the rear body structure according to the present invention has the excellent effect of facilitating the positioning of the rear floor pan and the vehicle body. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic plan view showing the configuration of a vehicle body to which the rear body structure according to this embodiment is applied. [Figure 2] This is a schematic cross-sectional view (showing a state cut along line 2-2 in Figure 1) illustrating the configuration of the main part of the vehicle body to which the rear body structure according to this embodiment is applied. [Modes for carrying out the invention]

[0017] Hereinafter, an example of the rear body structure according to the present invention will be described with reference to FIGS. 1 and 2. The arrow FR shown appropriately in each figure indicates the front side of the vehicle, the arrow UP indicates the upper side of the vehicle, and the arrow RH indicates the right side in the vehicle width direction.

[0018] First, with reference to FIG. 1, a schematic configuration of the "vehicle 10" to which the rear body structure according to the present embodiment is applied will be described.

[0019] The vehicle 10 includes a front part made of aluminum die-cast (not shown) that constitutes the front part of the vehicle, a center part (not shown) that constitutes the central part in the vehicle front-rear direction and includes a battery pack as a battery and a center frame that holds the battery pack, and a "rear part 12" as an aluminum die-cast body that constitutes the rear part of the vehicle. The front part is equipped with a power unit (not shown) including a motor and the like, and the vehicle 10 runs by driving this power unit with the electric power supplied from the battery pack.

[0020] The configuration of the rear part 12 will be described in detail. The rear part 12 includes a pair of rear wheel house parts (not shown) that constitute the outer part in the vehicle width direction, and a rear floor part 14 whose thickness direction is the vehicle up-down direction and extends in the vehicle width direction and the vehicle front-rear direction and is spanned between the pair of rear wheel house parts.

[0021] And the "peripheral edge part 14A" on the rear side of the vehicle of the rear floor part 14 is recessed in a substantially U shape in which the central part on the vehicle width direction side protrudes forward in the vehicle when viewed from the vehicle up-down direction and widens toward the rear side of the vehicle. On the outer part in the vehicle width direction, "processed surface parts 14A1" by machining are respectively formed. The processed surface part 14A1 is in a V shape that protrudes forward and outward in the vehicle width direction when viewed from the vehicle up-down direction, and a "corner part 14A2" that protrudes forward in the vehicle is formed on this processed surface part 14A1.

[0022] Also, a resin "rear floor pan 16" is disposed on the vehicle rear side of the rear floor portion 14. This rear floor pan 16 includes a flange portion 16A that constitutes the upper portion of the vehicle, a peripheral wall portion 16B that constitutes the main portion thereof, and a bottom wall portion 16C that constitutes the lower portion of the vehicle, and is formed in a box shape with the upper side of the vehicle open.

[0023] Specifically, the peripheral wall portion 16B is formed in a polygonal cylindrical shape when viewed in the vehicle vertical direction. As shown in FIG. 2, the cross section (planar cross section) of the peripheral wall portion 16B when viewed in the vehicle vertical direction becomes smaller as it goes from the upper side of the vehicle to the lower side of the vehicle. Also, the upper and front portion of the vehicle of the peripheral wall portion 16B is formed along the peripheral edge portion 14A of the rear floor portion 14.

[0024] Also, from the peripheral edge portion on the upper side of the vehicle of the peripheral wall portion 16B, the flange portion 16A extends outside the rear floor pan 16. The flange portion 16A is located on the upper side of the vehicle of the rear floor portion 14, and a part of the front side thereof covers the rear floor portion 14 from the upper side of the vehicle. On the other hand, the lower side of the vehicle of the peripheral wall portion 16B is in a state of being blocked by the bottom wall portion 16C.

[0025] And in the present embodiment, in the front and outer portion in the vehicle width direction of the rear floor pan 16, a "positioning projection portion 16D" that abuts against the processed surface portion 14A1 of the rear floor portion 14 is provided at the boundary portion between the flange portion 16A and the peripheral wall portion 16B.

[0026] This positioning projection portion 16D protrudes outside the rear floor pan 16 from the peripheral wall portion 16B, and is formed in a V shape that protrudes forward and outward in the vehicle width direction when viewed from the upper side of the vehicle.

[0027] Furthermore, a "contact surface portion 16D1" is formed on the front vehicle side of the positioning projection portion 16D, which can contact the corner portion 14A2 provided on the machined surface portion 14A1. In this embodiment, the rear floor pan 16 is positioned relative to the rear part 12 by bringing this contact surface portion 16D1 into contact with the machined surface portion 14A1. The rear floor pan 16 is attached to the rear part 12 by mounting members (not shown).

[0028] (Operation and effects of this embodiment) Next, the operation and effects of this embodiment will be described.

[0029] In this embodiment, as shown in Figure 1, the peripheral edge 14A on the rear side of the vehicle of the cast rear part 12 is convex and recessed on the front side of the vehicle, and a rear floor pan 16 made of resin can be placed in this area.

[0030] By the way, when positioning the rear floor pan 16 relative to the rear part 12, if a configuration is adopted in which, for example, a hook portion provided on the rear floor pan 16 is locked onto a projection rising from the rear part 12, the positioning work between the rear floor pan 16 and the rear part 12 becomes complicated.

[0031] In this embodiment, as shown in Figure 2, a machined surface portion 14A1 is formed on a part of the peripheral edge portion 14A on the rear side of the rear part 12, and a positioning projection portion 16D is provided on the rear floor pan 16. Therefore, in this embodiment, the rear floor pan 16 and the rear part 12 can be positioned by bringing the positioning projection portion 16D into contact with the machined surface portion 14A1.

[0032] Furthermore, in this embodiment, the positioning projection 16D is provided on the upper part of the rear floor pan 16. Also, the cross-section of the rear floor pan 16, as viewed from the vertical direction of the vehicle, becomes smaller as it moves from the upper side to the lower side of the vehicle.

[0033] Therefore, by moving the rear floor pan 16 to the underside of the vehicle while it is in contact with the peripheral edge 14A on the rear side of the rear part 12, the angle at which the machined surface 14A1 and the positioning projection 16D come into contact can be increased.

[0034] Furthermore, in this embodiment, the machined surface portion 14A1 on the peripheral edge portion 14A on the rear side of the rear part 12 is formed by machining, ensuring the accuracy of the machined surface portion 14A1. In addition, a corner portion 14A2 that protrudes toward the front of the vehicle is formed on the machined surface portion 14A1, and the positioning projection portion 16D is provided with a contact surface portion 16D1 that can contact the corner portion 14A2. Therefore, the corner portion 14A2 of the machined surface portion 14A1 can be used as a guide for the contact surface portion 16D1 of the positioning projection portion 16D to position the rear floor pan 16 and the rear part 12.

[0035] As described above, in this embodiment, the positioning work between the rear floor pan 16 and the rear part 12 can be easily performed.

[0036] In the embodiment described above, the positioning projection 16D was V-shaped, convex towards the front of the vehicle and outward in the vehicle width direction when viewed from above the vehicle. However, the positioning projection 16D can take various shapes, such as a rectangular parallelepiped, as long as it can contact the corner 14A2 of the machined surface 14A1.

[0037] Furthermore, in the embodiment described above, the machined surface portion 14A1 was formed by machining the rear floor portion 14, but the machined surface portion 14A1 may also be formed by laser processing or the like on the rear floor portion 14. [Explanation of symbols]

[0038] 10 vehicles 12 Rear parts (body) 14A Peripheral area 14A1 Machining surface section 14A2 Corner 16 Rear floor pan 16D Positioning projection 16D1 When attaching face

Claims

1. A vehicle body formed by casting, in which the peripheral edge on the rear side of the vehicle is convex and concave toward the front side of the vehicle, and a machined surface is formed on a part of the said peripheral edge, A rear floor pan, which is made of resin and has a positioning projection that contacts the processed surface portion to enable positioning relative to the vehicle body, A rear body structure having the following.

2. The positioning projection is provided on the upper part of the rear floor pan, The cross-section of the rear floor pan, as viewed from the vertical direction of the vehicle, becomes smaller as it moves from the upper side of the vehicle towards the lower side. The rear body structure of the vehicle according to claim 1.

3. The machined surface is formed by machining and has a corner that protrudes toward the front of the vehicle, and the positioning projection has a contact surface that can contact the corner. The rear body structure according to claim 1 or claim 2.

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