CN-224225151-U - Vehicle rear structure

CN224225151UCN 224225151 UCN224225151 UCN 224225151UCN-224225151-U

Abstract

The utility model provides a vehicle rear structure capable of improving load transmission efficiency in the event of a rear collision. The vehicle rear structure (S) is provided with a vehicle rear skeleton member (18) which is integrally molded by casting. The vehicle rear skeleton member (18) is provided with a pair of left and right rear wheel arches (42) and a pair of left and right rear side members (40). The rear side member (40) is provided with a side wall (40A), an upper wall (40B), and a lower wall (40C). The rear side member (40) further includes a first rib (41A) protruding from the lower wall portion (40C) toward the vehicle lower side, and a second rib (41B) protruding from the side wall portion (40A) toward the vehicle width direction outer side.

Inventors

Village Chongsheng Hong

Assignees

丰田自动车株式会社

Dates

Publication Date: 20260512
Application Date: 20250520
Priority Date: 20240524

Claims (1)

1. A vehicle rear structure comprising a vehicle rear skeleton member integrally molded by casting, characterized in that, The vehicle rear skeleton member includes: A pair of left and right rear wheel arches; A pair of left and right rear side members extending in the vehicle front-rear direction, The rear side member includes: a side wall portion that faces the thickness direction in the vehicle width direction; an upper wall portion that extends outward in the vehicle width direction from the side wall portion and has a thickness direction directed in the vehicle up-down direction; A lower wall portion that extends outward in the vehicle width direction from the side wall portion and has a thickness direction directed in the vehicle up-down direction; A first rib protruding from the lower wall portion toward a vehicle lower side; and a second rib protruding outward in the vehicle width direction from the side wall portion.

Description

Vehicle rear structure Technical Field The present utility model relates to a vehicle rear structure. Background Patent document 1 discloses a vehicle body front structure for controlling the amount of vehicle cabin rollback by suppressing the amount of deformation of an inclined portion while effectively absorbing load energy at the inclined portion of a front side member with respect to an input load from the front. A rib is provided on a front side member provided in the vehicle body front structure. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2004-224251 Disclosure of utility model Problems to be solved by the utility model The present utility model aims to provide a vehicle rear structure capable of improving load transmission efficiency in the event of a rear collision. Means for solving the problems The vehicle rear structure according to claim 1 is characterized by comprising a vehicle rear frame member integrally molded by casting, wherein the vehicle rear frame member comprises a pair of left and right rear wheel arches, a pair of left and right rear side members extending in the vehicle longitudinal direction, the rear side members comprising side wall portions extending in the vehicle width direction from the side wall portions outward in the vehicle width direction and having a thickness direction facing in the vehicle vertical direction, lower wall portions extending in the vehicle width direction from the side wall portions outward in the vehicle vertical direction and having a thickness direction facing in the vehicle vertical direction, a first rib protruding from the lower wall portion to the vehicle lower side, and a second rib protruding from the side wall portions outward in the vehicle width direction. In claim 1, the vehicle rear structure includes a vehicle rear skeleton member integrally molded by casting. The vehicle rear skeleton member includes a pair of left and right rear wheel arches and a pair of left and right rear side members extending in the vehicle front-rear direction. The rear side member includes a side wall portion that extends in the vehicle width direction outward from the side wall portion in the vehicle width direction and that extends in the vehicle vertical direction, and a lower wall portion that extends in the vehicle width direction outward from the side wall portion and that extends in the vehicle vertical direction. In addition, in the event of a rear collision, out-of-plane deformation occurs at each wall portion constituting the rear side member, and as a result, there is a possibility that the transmission efficiency of the collision load is deteriorated. Accordingly, in claim 1, the rear side member further includes a first rib protruding from the lower wall portion toward the vehicle lower side, and a second rib protruding from the side wall portion toward the vehicle width direction outer side. Therefore, the first rib and the second rib can suppress out-of-plane deformation of the lower wall portion and the side wall portion of the rear side member, and thus can improve load transmission efficiency in the event of a rear collision. Effects of the utility model As described above, according to the present utility model, a vehicle rear structure capable of improving load transmission efficiency at the time of a rear collision can be obtained. Drawings Fig. 1 is a cross-sectional view (cross-sectional view taken along line 1-1 of fig. 2) showing a part of a vehicle rear skeleton member. Fig. 2 is a perspective view of a vehicle rear skeleton member. Detailed Description The vehicle rear structure according to the embodiment will be described below with reference to fig. 1 and 2. In each of the drawings, arrow FR is appropriately shown to indicate the front of the vehicle, arrow UP is shown to indicate the upper side of the vehicle, arrow RH is shown to the right side in the vehicle width direction, and arrow OUT is shown to the outer side in the vehicle width direction. In the following description, the front-rear, up-down, and left-right directions are shown as the front-rear, up-down, and left-right directions in the vehicle width direction. As shown in fig. 2, the vehicle rear structure S includes a vehicle rear skeleton member 18. The vehicle rear skeleton member 18 is integrally molded by casting. Specifically, the vehicle rear skeleton member 18 is integrally molded by die casting using an aluminum alloy, a magnesium alloy, or the like as a material. The vehicle rear skeleton member 18 includes a pair of left and right rear wheel arches 42 and a pair of left and right rear side members 40 extending in the vehicle front-rear direction. The vehicle rear skeleton member 18 further includes a coupling portion 44 that couples the pair of right and left rear side members 40 in the vehicle width direction. As shown in fig. 1, the rear side member 40 includes a side wall portion 40A that faces the ve