WO2020170578A1

WO2020170578A1 - Onboard component support structure

Info

Publication number: WO2020170578A1
Application number: PCT/JP2019/048990
Authority: WO
Inventors: 慎太朗多賀; 英史猪爪; 祐一三宅; 拓哉寺内; 千花鷹羽
Original assignee: 三菱自動車工業株式会社
Priority date: 2019-02-19
Filing date: 2019-12-13
Publication date: 2020-08-27
Also published as: JPWO2020170578A1; JP7081717B2

Abstract

The present invention provides an onboard component support structure capable of suppressing damage to components in a vehicle rear during a rear-end collision of a vehicle.　The onboard component support structure has an onboard component (battery pack 110) mounted in the vehicle rear, a first support member (first bracket 120) joined to a floor 102 of a vehicle 100 and supporting the onboard component from the rear of the vehicle, and a second support member (second bracket 130) joined to the floor and supporting the onboard component from the front of the vehicle. The first support member is provided with a first bottom part 121, a first inclined part 122 extending upward and to the front of the vehicle in an inclined manner from the first bottom part, and a first attachment part 123. The second support member is provided with a second bottom part 131, a second inclined part 132 extending upward and to the rear of the vehicle in an inclined manner from the first bottom part, and a second attachment part 133. A second inclination angle θ2 of the second inclined part 132 with respect to the front-rear direction Dh of the vehicle is greater than a first inclination angle θ1 of the first inclined part 122 with respect to the front-rear direction Dh of the vehicle.

Description

Car part support structure

The present invention relates to an in-vehicle component support structure.

Conventionally, as a countermeasure against a collision in the rear part of a vehicle, a technique for suppressing damage to in-vehicle components mounted in the rear part of the vehicle has been known. For example, in Patent Document 1, a support member (bracket) supporting an on-vehicle component (battery pack corresponding to an electric device) is disengaged from a vehicle body (cross member) at the time of a collision at the rear of the vehicle, and the on-vehicle component is mounted on the vehicle. A technique of moving the vehicle forward is disclosed.

JP, 2007-203912, A

With the configuration of Patent Document 1, it may be difficult to sufficiently suppress damage to the on-vehicle components that are detached from the vehicle body at the time of a collision at the rear portion of the vehicle.

An object of the present invention is to provide an in-vehicle component support structure capable of suppressing damage to components mounted in the vehicle rear part in the event of a collision in the vehicle rear part.

In order to achieve such an object, the vehicle-mounted component support structure of the present invention includes a vehicle-mounted component mounted on a rear portion of a vehicle, a first support member that is joined to a floor of the vehicle and supports the vehicle-mounted component from the rear of the vehicle, and is joined to the floor. And a second support member that supports the on-vehicle component from the front of the vehicle. The first support member includes a first bottom portion attached to the floor, a first inclined portion that extends from the first bottom portion toward the vehicle front and upward, and a rear surface of the vehicle-mounted component provided at the front end of the first inclined portion. And a first mounting portion to be mounted. The second support member includes a second bottom portion that is attached to the floor, a second inclined portion that extends from the first bottom portion toward the vehicle rearward and upward, and a front surface of the vehicle-mounted component that is provided at the rear end of the second inclined portion. And a second attachment portion attached to the. The second inclination angle of the second inclined portion with respect to the vehicle front-rear direction is larger than the first inclination angle of the first inclined portion with respect to the vehicle front-rear direction.

According to the present invention, it is possible to realize an in-vehicle component support structure capable of suppressing damage to components mounted in the vehicle rear portion in the event of a collision in the vehicle rear portion.

1 is a side view showing a rear portion of a vehicle 100 including an in-vehicle component support structure of an embodiment. The top view which shows the rear part of the vehicle 100 of FIG. The perspective view which shows the vehicle-mounted component support structure of FIG. 1 and FIG. The side view which shows the vehicle-mounted component support structure of FIG. It is a schematic diagram which shows the effect|action of the vehicle-mounted component support structure of embodiment, and shows the state before the rear part of a vehicle deform|transforms by a collision. It is a schematic diagram which shows the effect|action of the vehicle-mounted component support structure of embodiment, and shows the state after the rear part of a vehicle deform|transformed by a collision.

In each drawing, the vehicle front-rear direction Dh (vehicle front Df and vehicle rear Dr), the vehicle width direction Dw, and the vertical direction Dv (upper Du and lower Dd) are indicated by arrows.

[Configuration of in-vehicle component support structure]
The configuration of the in-vehicle component support structure according to the embodiment will be described with reference to FIGS. 1 to 4.

FIG. 1 is a side view showing a rear portion of a vehicle 100 including the vehicle-mounted component support structure of the embodiment. FIG. 2 is a top view showing the rear portion of vehicle 100 in FIG. FIG. 3 is a perspective view showing the vehicle-mounted component support structure of FIGS. 1 and 2. FIG. 4 is a side view showing the vehicle-mounted component support structure of FIG.

As shown in FIGS. 1 and 2, a battery pack 110 (on-vehicle member) is mounted on the rear part of the vehicle 100. The battery pack 110 is located between the rear seat 104 and the rear end 105 of the vehicle body 101.

The battery pack 110 is composed of a rigid container as shown in FIGS. 1 to 4. In the present embodiment, as shown in FIG. 2, the battery pack 110 accommodates a battery 110M and a power conversion device 110N (DC-DC converter). The battery pack 110 is formed in a substantially rectangular shape in a top view, and a rear surface that is a surface facing the vehicle rear Dr has a first inclined surface 111 that inclines toward the vehicle front as it goes downward. A second inclined surface 112 that inclines rearward of the vehicle as it extends downward is formed on the front surface, which is the surface that faces toward.

As shown in FIG. 4, the battery pack 110 is attached to the vehicle 100 via a first support member (first bracket 120) and a second support member (second bracket 130).

As shown in FIGS. 1 to 4, the first support member (first bracket 120) supports the battery pack 110 from the vehicle rear Dr, and in the present embodiment, the center of the battery pack 110 in the vehicle width direction Dw. One is provided in.

The first bracket 120 is formed by bending a plate-shaped member at a plurality of locations, and as shown in FIG. 4, is inclined from the front end of the first bottom portion 121 attached to the vehicle 100 to the front of the vehicle and upward from the front end of the first bottom portion 121. It has a first inclined portion 122 extending vertically and a first mounting portion 123 extending upward from a front end (upper end) of the first inclined portion 122. The first bottom portion 121 is joined to the floor 102 of the vehicle body 101 via a reinforcing member 103 described later. The first attachment portion 123 is attached to the first inclined surface 111 of the battery pack 110, and is inclined rearward of the vehicle Dr as it goes upward along the first inclined surface 111. At both ends of the first bracket 120 in the vehicle width direction, flange portions that are erected above the vehicle are provided from the first bottom portion 121 to the first mounting portion 123.

As shown in FIGS. 1 to 4, the second support member (the second bracket 130) supports the battery pack 110 from the vehicle front Df, and in the present embodiment, in the vehicle width direction Dw of the battery pack 110. One is provided on each side.

Similar to the first bracket 120, the second bracket 130 is formed by bending a plate-shaped member at a plurality of locations, and as shown in FIG. 4, a second bottom portion 131 and a second bottom portion 131 attached to the vehicle 100 (floor 102). It has a second inclined portion 132 that extends from the rear end of the bottom portion 131 so as to incline rearward and upward in the vehicle, and a second mounting portion 133 that extends upward from the rear end (upper end) of the second inclined portion 132. The second attachment portion 133 is attached to the second inclined surface 112 of the battery pack 110, and inclines toward the vehicle front Df as it goes upward along the second inclined surface 112. Similar to the first bracket 120, flange portions that are erected above the vehicle are provided on both ends of the second bracket 130 in the vehicle width direction from the second bottom portion 131 to the second mounting portion 133.

The second inclination angle θ2 of the second inclined portion 132 of the second bracket 130 with respect to the vehicle front-rear direction Dh is larger than the first inclination angle θ1 of the first inclined portion 122 of the first bracket 120 with respect to the vehicle front-rear direction Dh. It is set. The inclination angle referred to here means an inclination angle in the extending direction of the first bracket 120 and the second bracket 130, that is, an angle on the side that is an acute angle with respect to the vehicle front-rear direction Dh. Further, the second mounting portion 133 of the second bracket 130 is mounted on the battery pack 110 at Du above the first mounting portion 123 of the first bracket 120. Specifically, the position K1 of the lower end of the second mounting portion 133 is located above the position K2 of the lower end of the first mounting portion 123 Du.

Further, a reinforcing member 103 for reinforcing the floor 102 is attached to the floor 102. The reinforcing member 103 is formed in a substantially U-shape whose cross section opens downward Dd, and reinforces the floor 102 by forming a closed cross section together with the floor 102. In the present embodiment, the reinforcing member 103 extends from the rear end of the floor 102 to the front of the first mounting portion 123, and the front end portion thereof has a bulging portion 103a bulging upward with respect to other locations. Has been formed. The first bottom portion 121 of the first bracket 120 is attached to the bulging portion 103a. Therefore, the position K3 (height) of the first bottom portion 121 is higher than the position K4 of the second bottom portion 131.

[Operation of in-vehicle component support structure]
The operation of the vehicle-mounted component support structure according to the embodiment will be described with reference to FIG.

FIG. 5 is a schematic diagram showing the operation of the vehicle-mounted component support structure of the embodiment, showing a state before the rear portion of the vehicle is deformed by a collision. FIG. 6 is a schematic view showing the operation of the vehicle-mounted component support structure of the embodiment, and shows a state after the rear portion of the vehicle is deformed due to a collision.

As shown in FIGS. 5 and 6, when the collision load P is input to the rear end 105 of the vehicle body 101, the floor 102 starts to deform. With the deformation of the floor, the battery pack 110 is pushed forward by the first bracket 120 and the second bracket 130 is pushed forward by the battery pack 110. Here, since the second inclination angle θ2 of the second inclined portion 132 is larger than the first inclination angle θ1 of the first inclined portion 122, the second inclined portion 132 rotates around the lower end thereof. And the first tilted portion 122 is hard to get up (the first tilt angle θ1 is hard to be expanded). As a result, a load along the first inclined portion 122 (facing the vehicle front and upward) is input to the rear surface of the battery pack 110 via the first bracket 120, and the second bracket is attached to the front surface of the battery pack 110. A load that can be lifted forward and upward of the vehicle is input as 130 rises, and the battery pack 110 moves forward and upward of the vehicle. At this time, the first mounting portion 123 is inclined rearward of the vehicle as it goes upward Du, so that the first inclined surface 111 of the battery pack 110 faces the first mounting portion 123 of the first bracket 120. In the contacted state, the load T is easily received in the direction of the normal line (the front side and the upper side of the vehicle).

[Effects of in-vehicle component support structure]
The effect of the vehicle-mounted component support structure of the embodiment will be described.

In the vehicle-mounted component support structure of the embodiment, the second inclination angle θ2 of the second inclined portion 132 of the second bracket 130 is larger than the first inclination angle θ1 of the first inclined portion 122 of the first bracket 120.

Accordingly, when the collision load P is input to the vehicle body 101 from the vehicle rear Dr toward the vehicle front Df, the second inclined portion 132 is easily rotated around the lower end thereof toward the vehicle front Df, and the first inclination is increased. The part 122 can be made difficult to rotate to the vehicle rear Dr around the lower end. Therefore, at the time of a rear collision of the vehicle 100, the first bracket 120 presses the battery pack 110 upward and backward of the vehicle Dr while suppressing the deformation, and the second bracket 130 is deformed so as to stand up toward the vehicle backward Dr. Meanwhile, the battery pack 110 is guided to the rear of the vehicle Dr and upward. As a result, at the time of a rear-end collision of the vehicle 100, the battery pack 110 mounted on the rear portion of the vehicle is moved to the front Df of the vehicle and upward so as to be retracted from the rear Dr of the vehicle to which the collision load P is input, and damage to the rear portion of the vehicle may occur. The influence can be reduced, and the damage to the battery pack 110 can be suppressed. Further, the battery pack 110 can also be prevented from interfering with the floor 102 of the vehicle body 101 by moving the battery pack 110 to the upper Du.

In the vehicle-mounted component support structure of the embodiment, the first attachment portion 123 is attached to the first inclined surface 111 while being inclined along the first inclined surface 111 of the battery pack 110. ‥

Due to this, when the collision load P is input via the first mounting portion 123, the load T directed toward the vehicle front Df and upward Du is applied to the first inclined surface 111. Therefore, at the time of a rear collision of the vehicle 100, the battery pack 110 can be reliably moved to the front Df of the vehicle and upward so as to be retracted from the rear Dr of the vehicle. As a result, damage to the battery pack 110 can be more reliably suppressed in the event of a rear collision of the vehicle 100.

In the vehicle-mounted component support structure according to the embodiment, the position K1 of the second mounting portion 133 is located above the position K2 of the first mounting portion 123 Du.

Due to this, when the collision load P is input via the first mounting portion 123 of the first bracket 120, the collision load P is transmitted to the second mounting portion 133 of the second bracket 130 forward and upward of the vehicle. As a result, at the time of a rear-end collision of the vehicle 100, the battery pack 110 can be easily moved so as to be pushed upward from the lower Dd to the upper Du, and the battery pack 110 is separated from the floor 102 to the upper Du to prevent damage to the battery pack 110. Can be suppressed.

Here, by setting the length L2 of the second inclined portion 132 to be longer than the length L1 of the first inclined portion 122, the second inclined portion 132 can be made to rise more easily than the first inclined portion 122. By arranging the position K1 of the second mounting portion 133 above the position K2 of the first mounting portion 123, the length L2 of the second inclined portion 132 is made longer than the length L1 of the first inclined portion 122. It can be easy to set. Further, by locating the position K3 of the first bottom portion 121 above the position K4 of the second bottom portion 131 Du, the length L2 of the second inclined portion 132 is set to be longer than the length L1 of the first inclined portion 122. It can be easily set for a long time.

In the vehicle-mounted component support structure of the embodiment, the first bottom portion 121 of the first bracket 120 is joined to the vehicle body 101 via the reinforcing member 103.

As a result, at the time of a rear-end collision of the vehicle 100, the collision load P is transmitted to the first bracket 120 via the reinforcing member 103, so that the collision load P can be sufficiently transmitted to the battery pack 110.

In the vehicle-mounted component support structure of the embodiment, the reinforcing member 103 extends to the vehicle front Df from the lower end 122a of the first inclined portion 122.

This prevents the first bracket 120 from being deformed at the boundary between the first bottom portion 121 and the first inclined portion 122 at the time of a rear-end collision of the vehicle 100, and more sufficiently transmits the collision load P to the battery pack 110. You can In the present embodiment, the reinforcing member 103 extends further forward than the front end of the first mounting portion 123 of the first bracket 120, so that the deformation of the first bracket 120 is further suppressed.

In the vehicle-mounted component support structure of the embodiment, the vehicle-mounted component is the battery pack 110.

Due to this, it is possible to sufficiently suppress the damage of the battery pack 110, which is desirable to suppress the damage relatively among the in-vehicle parts.

[Aspect of front structure of vehicle]
In carrying out the present invention, the above-described embodiment is an example, and various specific modes can be implemented.

For example, in the embodiment, the on-vehicle component is the battery pack 110, but it may be another high-voltage device or the like. That is, the on-vehicle component corresponds to a component that is preferably suppressed from being damaged especially at the time of a rear collision of the vehicle 100.

In addition, in the embodiment, one first bracket 120 is provided in the center of the battery pack 110 in the vehicle width direction Dw, and one second bracket 130 is provided on both sides of the battery pack 110 in the vehicle width direction Dw. However, the number and position are not limited.

Further, in the embodiment, the bulging portion 103a is provided in the reinforcing member 103, but the bulging portion 103a may not be provided in the reinforcing member 103, and the first mounting portion 123 may be the bulging portion of the reinforcing member 103. It may be attached to a place other than the protruding portion 103a.

100... Vehicle, 101... Car body, 102... Floor, 103... Reinforcement part, 104... Rear seat, 105... Rear end, 110... Battery pack, 110M... Battery, 110N... Power conversion device, 111... First inclined surface, 112 ... 2nd inclined surface, 120... 1st bracket (1st supporting member), 121... 1st bottom part, 122... 1st inclined part, 122a... Lower end, 122b... Upper end, 123... 1st mounting part, 130... 2nd Bracket (second support member), 131... second bottom portion, 132... second inclined portion, 132a... lower end, 132b... upper end, 133... second mounting portion, ?1... first inclination angle (first bracket 120 first Angle of the inclined portion 122 with respect to the vehicle front-rear direction Dh), θ2... Second inclination angle (angle of the second inclined portion 132 of the second bracket 130 with respect to the vehicle front-rear direction Dh), L1... First inclined portion 122 of the first bracket 120 , L2... Length of second inclined portion 132 of second bracket 130, K1... Position of upper end 132b of second inclined portion 132, K2... Position of upper end 122b of first inclined portion 122, K3... First The position of the lower end 122a of the inclined portion 122, the position of K4... the lower end 132a of the second inclined portion 132, P... the collision load due to the rear collision of the vehicle 100, T... the load, Dh... the vehicle longitudinal direction, Df... the vehicle front, Dr. ... rear of the vehicle, Dw... vehicle width direction, Dv... vertical direction, Du... up, Dd... down.

Claims

In-vehicle parts mounted on the rear of the vehicle,
A first support member joined to the floor of the vehicle to support the vehicle-mounted component from the rear of the vehicle;
A second support member that is joined to the floor and supports the vehicle-mounted component from the front of the vehicle;
The first support member is provided on a first bottom portion that is attached to the floor, a first inclined portion that extends from the first bottom portion toward the vehicle front and upward, and a front end of the first inclined portion. A first mounting portion mounted on the rear surface of the vehicle-mounted component,
The second support member is provided at a second bottom portion that is attached to the floor, a second inclined portion that extends obliquely rearward and upward of the vehicle from the first bottom portion, and a rear end of the second inclined portion. A second mounting portion mounted on the front surface of the vehicle-mounted component,
An in-vehicle component support structure, wherein a second inclination angle of the second inclined portion with respect to the vehicle front-rear direction is larger than a first inclination angle of the first inclined portion with respect to the vehicle front-rear direction.
A rear surface of the vehicle-mounted component has a first inclined surface that is inclined rearward and upward of the vehicle, and the first attachment portion is inclined along the first inclined surface and attached to the first inclined surface,
The vehicle-mounted component support structure according to claim 1, wherein.
The vehicle-mounted component support structure according to claim 1 or 2, wherein the second mounting portion is located above the first mounting portion.
Provided on the floor, having a reinforcement portion extending in the vehicle front-rear direction to reinforce the floor,
The in-vehicle component support structure according to any one of claims 1 to 3, wherein the first bottom portion is joined to the reinforcing portion.
The vehicle-mounted component support structure according to claim 4, wherein the reinforcing portion extends to a front side of the vehicle from a lower end of the first inclined portion.
The vehicle-mounted component support structure according to any one of claims 1 to 5, wherein the vehicle-mounted component is a battery pack.