Vehicle rear structure

Abstract

The invention relates to a rear structure of a vehicle, which can avoid interference of a supporting member on a storage battery and ensure rigidity of the supporting member relative to a load applied by goods carried on a luggage plate under the condition that the supporting member arranged behind the storage battery is pushed forwards due to a rear collision. The present invention is provided with: a battery (3) disposed below a luggage plate (1) that constitutes a bottom plate of a luggage compartment at the rear part of a vehicle; a rear cross member (4) disposed behind the battery and extending in the vehicle width direction; and a support member (5) disposed at the rear of the rear cross member and supporting the luggage plate, the support member having a plurality of vertical walls (51a) and a plurality of ribs (51) on the front side, the ribs (51) being formed by intersecting a plurality of transverse walls (51b) in a lattice shape. The rib is arranged between the front end of a part arranged behind the storage battery and the rear end of the storage battery so as to ensure the distance in the front-back direction without interfering with the storage battery even when the support member is pushed forward to a position in contact with the rear surface of the rear cross member due to a rear collision.

Description

Technical Field

[0001] The present invention relates to a vehicle rear structure in which a storage battery is disposed below a luggage board that forms a bottom plate of a luggage compartment constituting a rear portion of a vehicle. Background Art

[0002] In Patent Document 1, a vehicle rear structure is disclosed in which a storage battery is disposed below a luggage board that forms a bottom plate of a luggage compartment constituting a rear portion of a vehicle.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2019-051885 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] In a vehicle in which a storage battery is mounted below a luggage board that forms a bottom plate of a luggage compartment constituting a rear portion of a vehicle, a support member that supports a rear end portion of the luggage board is disposed behind the storage battery. However, when the support member is pushed forward due to a rear collision, the support member may collide with the storage battery, causing the storage battery to move or be damaged. In order to avoid such interference of the support member with the storage battery, it is necessary to reduce the thickness of the support member in the front-rear direction. However, if the thickness of the support member in the front-rear direction is reduced over the entire region in the vehicle width direction, the rigidity of the support member with respect to the load applied by the cargo placed on the luggage board is reduced.

[0008] Therefore, an object of the present invention is to provide a vehicle rear structure that can avoid interference of a support member with a storage battery when the support member disposed behind the storage battery is pushed forward due to a rear collision, and can ensure the rigidity of the support member with respect to the load applied by the cargo placed on the luggage board.

[0009] Means for Solving the Problems

[0010] The vehicle rear structure of the present invention is characterized by comprising: a storage battery disposed below a luggage board that forms a bottom plate of a luggage compartment constituting the vehicle rear; a rear cross member disposed behind the storage battery and extending in the vehicle width direction; and a support member disposed behind the rear cross member and supporting the luggage board. The support member has ribs on the front side, and the ribs are formed by a lattice-like intersection of a plurality of longitudinal walls extending in the vertical and front-rear directions and a plurality of transverse walls extending in the vehicle width and front-rear directions. The ribs ensure a distance in the front-rear direction between the front end of the portion disposed behind the storage battery and the rear end of the storage battery in such a manner that the support member does not interfere with the storage battery even when the support member is pushed forward by a rear collision to a position in contact with the rear surface of the rear cross member.

[0011] In one aspect of the vehicle rear structure of the present invention, it may also be that the ribs are formed in such a manner that the front end of the portion disposed behind the storage battery is disposed at a more rearward position than the front end of the portion not disposed behind the storage battery.

[0012] In one aspect of the vehicle rear structure of the present invention, it may also be that the support member is supported by the rear cross member by a part of the support member abutting against the upper surface of the rear cross member.

[0013] According to this aspect, it is possible to improve the performance of supporting the support member so as not to tip forward with respect to the load applied by the goods placed on the luggage board.

[0014] Advantages of the Invention

[0015] In the present invention, when the support member disposed behind the storage battery is pushed forward by a rear collision, it is possible to avoid interference of the support member with the storage battery and ensure the rigidity of the support member with respect to the load applied by the goods placed on the luggage board. Description of the Drawings

[0016] Figure 1 is a top view of the vehicle rear structure of an embodiment of the present disclosure.

[0017] Figure 2 is Figure 1 a cross-sectional view taken along line A-A in

[0018] Figure 3 is a perspective view of the vehicle rear structure of this embodiment. Detailed Embodiments

[0019] Hereinafter, with reference to Figures 1 to 3A vehicle rear structure 10 according to an embodiment of the present disclosure will be described. The arrows FR, UP, and RH shown in the following drawings respectively represent the front direction (travel direction), the upward direction, and the right direction of the vehicle. In addition, the opposite directions of the respective arrows FR, UP, and RH represent the rear direction, the downward direction, and the left direction of the vehicle. Hereinafter, when only the front-rear, left-right, and up-down directions are used for description, unless otherwise specified, the front and rear in the vehicle front-rear direction, the left and right in the vehicle left-right direction (vehicle width direction), and the up and down in the vehicle up-down direction are meant.

[0020] Figure 1 is a plan view of the vehicle rear structure 10. Figure 2 is Figure 1 a sectional view taken along line A-A in Figure 2 Although the luggage board 1 constituting the bottom plate of the luggage compartment at the rear of the vehicle and the rear door 2 are described, Figure 1 the description of the luggage board 1 and the rear door 2 is omitted. As Figures 1 to 2 shown, the vehicle rear structure 10 includes: a storage battery 3 disposed longitudinally below the luggage board 1; a rear cross member 4 disposed behind the storage battery 3 and extending in the vehicle width direction; and a support member 5 disposed behind the rear cross member 4 and supporting the luggage board 1. Both the rear cross member 4 and the support member 5 are disposed below the luggage board 1. Further, a rear panel 6 is disposed behind the support member 5.

[0021] As Figure 1 shown, a right toolbox 7R is disposed on the front side and the right side of the storage battery 3, and a left toolbox 7L and an intercooler spray can 8 are disposed on the left side of the storage battery 3. The materials of the right toolbox 7R and the left toolbox 7L may be, for example, foamed polypropylene. A plurality of recesses 71 recessed downward are formed on the upper surface of the left toolbox 7L, and tools such as a jack 72 can be stored in the recesses 71. Recesses 71 recessed downward are also formed on the upper surface of the right toolbox 7R, and tools such as accessory parts 73 of the jack 72 can be stored in the recesses 71.

[0022] The luggage board 1 is rotatably mounted to the vehicle body with its front end as a rotation axis. Therefore, by lifting the rear end of the luggage board 1 by hand, tools such as the jack 72 stored in the recesses 71 of the right toolbox 7R and the left toolbox 7L can be taken out, or a battery cable (not shown) can be connected to the storage battery 3. Further, when the rear end of the luggage board 1 is lowered, the luggage board 1 is placed on the right toolbox 7R, the left toolbox 7L, and the support member 5 and is supported by the right toolbox 7R, the left toolbox 7L, and the support member 5.

[0023] As Figure 2As shown, the storage battery 3 and the support member 5 are mounted on the rear vehicle floor 9. Further, a bumper reinforcement 11 is disposed behind the support member 5 and below the rear panel 6. A sealing strip 61 is fixed to the rear portion of the rear panel 6. Figure 2 The state in which the rear door 2 is closed is shown. When the rear door 2 is closed, the sealing strip 61 comes into contact with the rear door 2, and the gap between the rear door 2 and the rear panel 6 can be filled.

[0024] Figure 3 It is a perspective view of the vehicle rear structure 10. Figure 3 In order to show the shape of the rib 51 of the support member 5, the description of the luggage board 1 and the right toolbox 7R is omitted. As Figure 3 shown, the support member 5 has a rib 51 on the front side, and the rib 51 is formed by a lattice cross of a plurality of longitudinal walls 51a extending in the vertical direction and the front-rear direction and a plurality of transverse walls 51b extending in the vehicle width direction and the front-rear direction. The support member 5 is formed of a resin material, and by having the lattice-shaped rib 51, the rigidity against the load applied by the goods placed on the luggage board 1 can be ensured.

[0025] The rib 51 extends forward to the vicinity of the rear surface of the rear cross member 4 at the portion not disposed behind the storage battery 3. Further, the rib 51 is formed such that the front end 52 of the portion disposed behind the storage battery 3 is disposed more rearward than the front end 53 of the portion not disposed behind the storage battery 3. Therefore, as Figure 2 shown, the distance between the front end 52 of the rib 51 of the portion disposed behind the storage battery 3 and the rear end of the storage battery 3 is widened.

[0026] In the case where the vehicle is rear-collided, Figure 2The bumper reinforcement 11 shown is deformed, and the support member 5 may be pushed forward. Thus, when the support member 5 is pushed forward by a rear collision, the front end 53 of the portion not disposed behind the battery 3 contacts the rear surface of the rear cross member 4. However, in the vehicle rear structure 10, the front end 52 of the portion disposed behind the battery 3 is ensured not to interfere with the battery 3 even when the support member 5 is pushed forward by a rear collision to a position where the front end 53 of the portion not disposed behind the battery 3 contacts the rear surface of the rear cross member 4. Therefore, the vehicle rear structure 10 can avoid interference of the support member 5 with the battery 3 even when the support member 5 is pushed forward by a rear collision. In addition, the vehicle rear structure 10 is formed with ribs 51 such that the front end 53 of the portion not disposed behind the battery 3 is disposed more forward than the front end 52 of the portion disposed behind the battery 3. Thus, in the portion not disposed behind the battery 3, the rigidity of the support member 5 with respect to the load applied by the cargo placed on the luggage board 1 can be improved.

[0027] An upward climbing portion 54 that protrudes forward above the rear cross member 4 is provided at the right end of the support member 5. The upward climbing portion 54 abuts against the upper surface 41 of the rear cross member 4. In addition, an upward climbing portion 55 that protrudes forward above the rear cross member 4 is also provided at a portion of the support member 5 that is to the left of the battery 3. In Figure 3 it is blocked by the battery 3 and not visible, but the upward climbing portion 55 also abuts against the upper surface 41 of the rear cross member 4. Moreover, although not shown, an upward climbing portion 56 that protrudes forward above the rear cross member 4 and abuts against the upper surface 41 of the rear cross member 4 is also provided at the left end of the support member 5 in the same manner as the upward climbing portion 54 at the right end. The upward climbing portions 54 to 56 at these three positions abut against the upper surface 41 of the rear cross member 4, whereby the support member 5 is supported by the rear cross member 4.

[0028] As Figure 2 shown, the upper surface 57 of the support member 5 extends above the rear cross member 4. Therefore, when cargo is placed on the luggage board 1, a load is applied in a direction that causes the support member 5 to tip forward. In the vehicle rear structure 10, the upward climbing portions 54 to 56 at three positions abut against the upper surface 41 of the rear cross member 4 to support the support member 5 by the rear cross member 4. Therefore, the performance of supporting the support member 5 so as not to tip forward with respect to the load applied by the cargo loaded on the luggage board 1 can be improved.

[0029] <Supplement to the Embodiment>

[0030] The rear vehicle structure of the present disclosure is not limited to the above-described manner and can be implemented in various ways within the scope of the gist of the present disclosure. For example, the battery may be arranged horizontally instead of longitudinally. Additionally, the intercooler spray tank may not be mounted. Further, the number of upward climbing portions of the support member may also be other than three.

[0031] Explanation of Reference Numerals

[0032] 1 luggage board, 2 rear door, 3 battery, 4 rear cross member, 5 support member, 6 rear panel, 7L left toolbox, 7R right toolbox, 8 intercooler spray tank, 9 rear vehicle floor, 10 rear vehicle structure, 11 bumper reinforcement, 41 upper surface, 51 rib, 51a longitudinal wall, 51b transverse wall, 52, 53 front end, 54, 55, 56 upward climbing portion, 57 upper surface, 61 sealing strip, 71 recess, 72 jack, 73 accessory component.

Claims

1. A vehicle rear structure, characterized in that: have: A battery is disposed under a luggage board forming a floor of a luggage room at the rear of the vehicle; a rear cross member, arranged behind the battery and extending in the vehicle width direction; and a supporting member, arranged behind the rear cross member and supporting the luggage board, The support member includes a rib on the front side, wherein the rib is formed by a plurality of longitudinal walls extending in the up-down direction and the front-back direction and a plurality of transverse walls extending in the vehicle width direction and the front-back direction intersecting in a lattice pattern. The rib ensures a distance in the front-to-rear direction between the front end of a portion arranged behind the battery and the rear end of the battery in such a manner that the support member does not interfere with the battery even when the support member is pushed forward to a position in contact with the rear surface of the rear cross member due to a rear collision.

2. The vehicle rear structure according to claim 1, characterized in that: The rib is formed such that a front end of a portion disposed behind the battery is disposed more rearward than a front end of a portion not disposed behind the battery.

3. The vehicle rear structure according to claim 1 or 2, characterized in that: The support member is supported by the rear cross member because a portion of the support member is in contact with the upper surface of the rear cross member.

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