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JP-7856087-B2 - Vehicle rear structure

JP7856087B2JP 7856087 B2JP7856087 B2JP 7856087B2JP-7856087-B2

Inventors

  • 浦郷 正大

Assignees

  • トヨタ自動車株式会社

Dates

Publication Date
20260511
Application Date
20231225

Claims (3)

  1. The battery is located under the deck board that forms the floor of the luggage compartment at the rear of the vehicle, A rear cross member positioned behind the aforementioned battery and extending in the vehicle width direction, It comprises a support member positioned behind the rear cross member and supporting the deck board, The support member has ribs on its front side in which a plurality of vertical walls extending in the vertical and longitudinal directions and a plurality of horizontal walls extending in the vehicle width direction and longitudinal direction intersect in a grid pattern. The rear vehicle structure is characterized in that the rib is positioned such that it does not interfere with the battery even when the support member is pushed forward by a rear impact to a position where it contacts the rear surface of the rear cross member, by ensuring a longitudinal distance between the front end of the portion located behind the battery and the rear end of the battery.
  2. The vehicle rear structure according to claim 1, The vehicle rear structure is characterized in that the rib is formed such that the front end of the portion located behind the battery is positioned behind the front end of the portion not located behind the battery.
  3. The vehicle rear structure according to claim 1 or 2, A rear vehicle structure characterized in that a portion of the support member abuts against the upper surface of the rear cross member, thereby supporting the support member on the rear cross member.

Description

This invention relates to a vehicle rear structure in which a battery is located beneath a deck board that forms the floor of the luggage compartment at the rear of the vehicle. Patent Document 1 discloses a vehicle rear structure in which a battery is located beneath a deck board that forms the floor of the luggage compartment at the rear of the vehicle. Japanese Patent Publication No. 2019-051885 This is a top view of the rear structure of a vehicle according to the embodiment of the disclosure.This is a cross-sectional view taken along line A-A in Figure 1.This is a perspective view of the rear structure of the vehicle according to this embodiment. The vehicle rear structure 10 of this embodiment will be described below with reference to Figures 1 to 4. The arrows FR, UP, and RH in the following drawings indicate the forward (direction of travel), upward, and rightward directions of the vehicle, respectively. The opposite directions of each arrow FR, UP, and RH indicate the rearward, downward, and leftward directions of the vehicle, respectively. Hereafter, when simply using the directions front/back, left/right, and up/down, unless otherwise specified, these refer to the front/back direction of the vehicle, the left/right direction of the vehicle (vehicle width direction), and the up/down direction of the vehicle. Figure 1 is a top view of the vehicle's rear structure 10. Figure 2 is a cross-sectional view taken along line A-A in Figure 1. However, while Figure 2 shows the deck board 1 and back door 2 that constitute the floor of the luggage compartment at the rear of the vehicle, Figure 1 omits the depiction of the deck board 1 and back door 2. As shown in Figures 1 and 2, the vehicle's rear structure 10 comprises a battery 3 positioned vertically below the deck board 1, a rear cross member 4 positioned behind the battery 3 and extending in the vehicle width direction, and a support member 5 positioned behind the rear cross member 4 and supporting the deck board 1. Both the rear cross member 4 and the support member 5 are positioned below the deck board 1. A rear panel 6 is positioned behind the support member 5. As shown in Figure 1, the right-side toolbox 7R is positioned on the front and right side of the battery 3, while the left-side toolbox 7L and intercooler spray tank 8 are positioned on the left side of the battery 3. The material of the right-side toolbox 7R and the left-side toolbox 7L may be, for example, expanded polypropylene. The top surface of the left-side toolbox 7L has multiple recesses 71 that curve downwards, allowing tools such as a jack 72 to be stored in these recesses. The top surface of the right-side toolbox 7R also has recesses 71 that curve downwards, allowing tools such as accessories 73 for the jack 72 to be stored in these recesses. The deck board 1 is attached to the vehicle body so as to be rotatable around its front end as a pivot point. Therefore, by manually lifting the rear end of the deck board 1, tools such as the jack 72 stored in the recesses 71 of the right-side toolbox 7R and left-side toolbox 7L can be retrieved, or booster cables (not shown) can be connected to the battery 3. When the rear end of the deck board 1 is lowered, the deck board 1 rests on the right-side toolbox 7R, left-side toolbox 7L, and support member 5, and is supported by the right-side toolbox 7R, left-side toolbox 7L, and support member 5. As shown in Figure 2, the battery 3 and support member 5 are mounted on the rear floor pan 9. A bumper reinforcement 11 is positioned behind the support member 5 and below the rear panel 6. A weatherstrip 61 is fixed to the rear of the rear panel 6. Figure 2 shows the back door 2 in the closed position. When the back door 2 is closed, the weatherstrip 61 contacts the back door 2, filling the gap between the back door 2 and the rear panel 6. Figure 3 is a perspective view of the rear vehicle structure 10. To show the shape of the ribs 51 of the support member 5, the deck board 1 and the right-side toolbox 7R are omitted from the diagram. As shown in Figure 3, the support member 5 has ribs 51 on its front side, where multiple vertical walls 51a extending in the vertical and longitudinal directions and multiple horizontal walls 51b extending in the vehicle width direction and longitudinal direction intersect in a grid pattern. The support member 5 is made of resin material, and the grid-like ribs 51 ensure rigidity against the load applied by cargo placed on the deck board 1. In the portion of the rib 51 not located behind the battery 3, it extends forward to near the rear surface of the rear cross member 4. Furthermore, the front end 52 of the portion of the rib 51 located behind the battery 3 is positioned further back than the front end 53 of the portion not located behind the battery 3. Therefore, as shown in Figure 2, there is a distance between the front end 52 of the rib 51 located behind the battery 3 and the rear end of the battery 3. If the vehi