JPWO2020170578A1 - In-vehicle component support structure - Google Patents

Abstract

Provided is an in-vehicle component support structure capable of suppressing damage to components at the rear of the vehicle in the event of a vehicle rear collision. The in-vehicle component support structure includes an in-vehicle component (battery pack 110) mounted on the rear part of the vehicle, a first support member (first bracket 120) joined to the floor 102 of the vehicle 100 to support the in-vehicle component from the rear of the vehicle, and a floor. It has a second support member (second bracket 130) that is joined to and supports the vehicle-mounted parts from the front of the vehicle. The first support member includes a first bottom portion 121, a first inclined portion 122 extending forward and upwardly from the first bottom portion so as to extend upward, and a first mounting portion 123. The second support member includes a second bottom portion 131, a second inclined portion 132 extending rearwardly and upwardly from the first bottom portion, and a second mounting portion 133. The second inclination angle θ2 of the second inclined portion 132 with respect to the vehicle front-rear direction Dh is larger than the first inclination angle θ1 of the first inclined portion 122 with respect to the vehicle front-rear direction Dh.

Description

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

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

JP-A-2007-203912

With the configuration of Patent Document 1, it may be difficult to sufficiently suppress damage to in-vehicle parts that separate from the vehicle body in the event of a collision at the rear of the vehicle.

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

In order to achieve such an object, the in-vehicle component support structure of the present invention is joined to the in-vehicle component mounted on the rear part of the vehicle, a first support member joined to the floor of the vehicle to support the in-vehicle component from the rear of the vehicle, and the floor. It has a second support member that supports the vehicle-mounted parts from the front of the vehicle. The first support member is provided on the first bottom portion attached to the floor, the first inclined portion extending in front of the vehicle and extending upward from the first bottom portion, and the rear surface of the in-vehicle component provided at the front end of the first inclined portion. It is provided with a first mounting portion to be mounted. The second support member is provided at the second bottom portion attached to the floor, the second inclined portion extending rearward and upwardly from the first bottom portion, and the rear end of the second inclined portion, and is provided on the front surface of the in-vehicle component. It has a second mounting part that can be mounted on. 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 part support structure capable of suppressing damage to parts mounted on the rear part of the vehicle in the event of a collision at the rear part of the vehicle.

A side view showing the rear part of the vehicle 100 including the vehicle-mounted component support structure of the embodiment. Top view showing the rear part of the vehicle 100 of FIG. FIG. 3 is a perspective view showing an in-vehicle component support structure of FIGS. 1 and 2. FIG. 3 is a side view showing an in-vehicle component support structure of FIG. It is a schematic diagram which shows the operation of the vehicle-mounted component support structure of an embodiment, and shows the state before the rear part of a vehicle is deformed by a collision. It is a schematic diagram which shows the operation of the vehicle-mounted component support structure of an embodiment, and shows the state after the rear part of a vehicle is deformed by a collision.

In each figure, 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.

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

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

As shown in FIGS. 1 and 2, a battery pack 110 (vehicle-mounted member) is mounted on the rear portion 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.

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

As shown in FIG. 4, the battery pack 110 is attached to the vehicle 100 via the first support member (first bracket 120) and the 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 rear Dr of the vehicle, and in the present embodiment, the center of the battery pack 110 in the vehicle width direction Dw. There is one in.

The first bracket 120 is formed by refracting a plate-shaped member at a plurality of locations, and as shown in FIG. 4, the first bracket 120 is inclined forward and upward from the front ends of the first bottom portion 121 and the first bottom portion 121 attached to the vehicle 100. It has a first inclined portion 122 extending from the front end (upper end) of the first inclined portion 122, and a first mounting portion 123 extending upward from the 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. Further, the first mounting portion 123 is mounted on the first inclined surface 111 of the battery pack 110, and is inclined toward the rear Dr of the vehicle as it goes upward along the first inclined surface 111. Flange portions that stand above the vehicle are provided at both ends of the first bracket 120 in the vehicle width direction from the first bottom portion 121 to the first mounting portion 123.

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

Like the first bracket 120, the second bracket 130 is formed by refracting a plate-shaped member at a plurality of locations, and as shown in FIG. 4, the second bottom 131 and the second bracket 130 are attached to the vehicle 100 (floor 102). It has a second inclined portion 132 extending rearward and upwardly from the rear end of the bottom portion 131, and a second mounting portion 133 extending upward from the rear end (upper end) of the second inclined portion 132. The second mounting portion 133 is mounted on the second inclined surface 112 of the battery pack 110, and is inclined toward the vehicle front Df as it goes upward along the second inclined surface 112. Similar to the first bracket 120, flange portions that stand up above the vehicle are also 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 inclination 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 refers to the inclination angle of the first bracket 120 and the second bracket 130 in the extending direction, that is, the angle on the side that becomes 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 a Du above the first mounting portion 123 of the first bracket 120. Specifically, the position K1 at the lower end of the second mounting portion 133 is located above Du above the position K2 at the lower end of the first mounting portion 123.

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 having a cross section that opens downward to 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 has a bulging portion 103a that bulges upward with respect to other portions. It is 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.

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

FIG. 5 is a schematic view showing the operation of the vehicle-mounted component support structure of the embodiment, and shows 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 by 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 begins to be deformed. As the floor is deformed, 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 inclined angle θ1 of the first inclined portion 122, the second inclined portion 132 rotates about the lower end thereof. It is easy to get up (the second inclination angle θ2 is easy to expand), and the first inclined portion 122 is difficult to get up (the first inclination angle θ1 is difficult to expand). As a result, a load along the first inclined portion 122 (facing forward and upward of the vehicle) is input to the rear surface of the battery pack 110 via the first bracket 120, and the second bracket is applied to the front surface of the battery pack 110. As the 130 rises, a load that can be lifted forward and upward of the vehicle is input, and the battery pack 110 moves forward and upward of the vehicle. At this time, since the first mounting portion 123 is inclined toward the rear Dr of the vehicle toward the upper Du, 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 normal direction (front and upward of the vehicle).

[Effect 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 tilt angle θ2 of the second tilt portion 132 of the second bracket 130 is larger than the first tilt angle θ1 of the first tilt portion 122 of the first bracket 120.

As a result, 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 can be easily rotated toward the vehicle front Df around the lower end thereof, and the first inclined portion 132 can be easily rotated toward the vehicle front Df. The portion 122 can be made difficult to rotate to the rear Dr of the vehicle around the lower end thereof. Therefore, at the time of the rear collision of the vehicle 100, the first bracket 120 presses the battery pack 110 rearward and upward of the vehicle while suppressing the deformation, and the second bracket 130 is deformed so as to rise toward the rearward Dr. While guiding the battery pack 110 to the rear Dr and upward of the vehicle. As a result, at the time of the rear collision of the vehicle 100, the battery pack 110 mounted on the rear part of the vehicle is moved upward and Df in front of the vehicle so as to be retracted from the rear Dr. The effect can be reduced and damage to the battery pack 110 can be suppressed. Further, by moving the battery pack 110 to the upper Du, it is possible to prevent the battery pack 110 from interfering with the floor 102 of the vehicle body 101.

In the vehicle-mounted component support structure of the embodiment, the first mounting portion 123 is tilted along the first tilted surface 111 of the battery pack 110 and mounted on the first tilted surface 111.

As a result, when the collision load P is input via the first mounting portion 123, a load T toward the vehicle front Df and upward Du is applied to the first inclined surface 111. Therefore, at the time of the 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 retract from the rear Dr of the vehicle. As a result, damage to the battery pack 110 can be more reliably suppressed when the vehicle 100 collides with the rear.

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

As a result, 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 in front of and above the vehicle. As a result, at the time of the rear collision of the vehicle 100, the battery pack 110 is easily moved so as to be pushed up from the lower Dd toward the upper Du, and the battery pack 110 is separated from the floor 102 to the upper Du to damage 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 easier to rise than the first inclined portion 122. By locating 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 easily set. Further, by positioning the position K3 of the first bottom portion 121 above the position K4 of the second bottom portion 131, the length L2 of the second inclined portion 132 becomes larger than the length L1 of the first inclined portion 122. It can be set for a long time and easily.

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, the collision load P is transmitted to the first bracket 120 via the reinforcing member 103 at the time of the rear collision of the vehicle 100, 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 toward the vehicle front Df from the lower end 122a of the first inclined portion 122.

As a result, the first bracket 120 is prevented from being deformed at the boundary between the first bottom portion 121 and the first inclined portion 122 at the time of the rear collision of the vehicle 100, and the collision load P is more sufficiently transmitted to the battery pack 110. Can be done. In the present embodiment, since the reinforcing member 103 extends forward from the front end of the first mounting portion 123 of the first bracket 120, 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 a battery pack 110.

As a result, damage to the battery pack 110, which is desirable to be relatively suppressed among the in-vehicle parts, can be sufficiently suppressed.

[Aspect of vehicle front structure]
In carrying out the present invention, the above embodiment is an example, and the specific embodiment can be variously changed and carried out.

For example, in the embodiment, the vehicle-mounted component is the battery pack 110, but other high-voltage devices and the like may be used. That is, the in-vehicle parts correspond to those in which it is particularly preferable to suppress damage at the time of a rear collision of the vehicle 100.

Further, in the embodiment, one first bracket 120 is provided in the center of the vehicle width direction Dw with respect to the battery pack 110, and one second bracket 130 is provided on both sides of the vehicle width direction Dw with respect to the battery pack 110. They are provided one by one, but the number and position are not limited.

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

100 ... Vehicle, 101 ... Body, 102 ... Floor, 103 ... Reinforcement, 104 ... Rear seat, 105 ... Rear end, 110 ... Battery pack, 110M ... Battery, 110N ... Power converter, 111 ... First inclined surface, 112 ... second inclined surface, 120 ... first bracket (first support member), 121 ... first bottom portion, 122 ... first inclined portion, 122a ... lower end, 122b ... upper end, 123 ... first mounting portion, 130 ... second Bracket (second support member), 131 ... second bottom, 132 ... second inclined portion, 132a ... lower end, 132b ... upper end, 133 ... second mounting portion, θ1 ... first tilt angle (first of the first bracket 120) The angle of the inclined portion 122 with respect to the vehicle front-rear direction Dh), θ2 ... The second inclination angle (the angle of the second inclined portion 132 of the second bracket 130 with respect to the vehicle front-rear direction Dh), L1 ... , L2 ... The length of the second inclined portion 132 of the second bracket 130, K1 ... The position of the upper end 132b of the second inclined portion 132, K2 ... The position of the upper end 122b of the first inclined portion 122, K3 ... The position of the lower end 122a of the inclined portion 122, K4 ... the position of 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 front-rear direction, Df ... the vehicle front, Dr. ... rear of the vehicle, Dw ... vehicle width direction, Dv ... vertical direction, Du ... upward, Dd ... downward.

Claims (6)

In-vehicle parts mounted on the rear of the vehicle and
A first support member that is joined to the floor of the vehicle and supports the in-vehicle parts from the rear of the vehicle,
It has a second support member that is joined to the floor and supports the in-vehicle component from the front of the vehicle.
The first support member is provided at a first bottom portion attached to the floor, a first inclined portion extending in front of and upwardly from the first bottom portion, and a front end of the first inclined portion. Equipped with a first mounting part that can be mounted on the rear surface of in-vehicle parts,
The second support member is provided at a second bottom portion attached to the floor, a second inclined portion extending from the first bottom portion so as to be inclined rearward and upward of the vehicle, and a rear end of the second inclined portion. A second mounting portion that is mounted on the front surface of the in-vehicle component is provided.
An in-vehicle component support structure characterized in that 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. The rear surface of the vehicle-mounted component has a first inclined surface inclined rearward and upward of the vehicle, and the first mounting portion is inclined along the first inclined surface and attached to the first inclined surface.
The in-vehicle component support structure according to claim 1. The vehicle-mounted component support structure according to claim 1 or 2, wherein the second mounting portion is located above the first mounting portion. It has a reinforcing portion provided on the floor and extends in the front-rear direction of the vehicle to reinforce the floor.
The vehicle-mounted 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 from the lower end of the first inclined portion to the front of the vehicle. The vehicle-mounted component support structure according to any one of claims 1 to 5, wherein the vehicle-mounted component is a battery pack.

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