JP2020011610A - Vehicle power supply fixing structure - Google Patents

Abstract

To provide a vehicle power supply fixing structure which can protect a power supply device and a cable from damage efficiently during a collision.SOLUTION: A vehicle power supply fixing structure (a fixing structure 100) according to the invention includes: a floor panel 104 of a vehicle; and a power supply device (a battery 106) which is disposed at the right side or the left on the floor panel 104 and in which a predetermined cable 124 extends from the inner side as seen in the vehicle width direction. The floor panel 104 has a bead 130 recessed along a side member 134 formed over the lower side of the floor panel 104 in a vehicle fore and aft direction. The battery 106 is disposed crossing the bead 130 on the floor panel 104.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle power supply fixing structure.

  Hybrid vehicles (HEVs) include a type that can run on its own using only a motor and a type that assists with a motor while using an engine as its main power. Compared with the former type, in the latter type, since the driving force required for the motor is not so large, in addition to the motor, a battery and a rectifier (DCDC converter) and the like (hereinafter, the battery and the rectifier are collectively referred to as a “power supply device”) ) Can be relatively small. As an example of the installation of the power supply device, in the technology of Patent Document 1, a traveling battery is installed in a space below a front seat.

JP 2018-39483 A

  In the technique of Patent Literature 1, the traveling battery is installed between a pair of left and right lower rails of the front seat for the purpose of suppressing damage to the traveling battery when a side collision occurs. However, at present, there is a demand not only for protection of the power supply device itself, but also for prevention of damage to a cable extending from the power supply device. Since damage to the cable can lead to electric leakage, thorough measures are required to prevent even deformation of the vehicle body in the event of a collision.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a vehicle power supply fixing structure capable of efficiently protecting a power supply device and a cable from damage during a collision.

  In order to solve the above-described problem, a typical configuration of a vehicle power supply fixing structure according to the present invention includes a floor panel of a vehicle and a predetermined cable arranged on the right or left side of the floor panel from the inside in the vehicle width direction. The power supply fixing structure for a vehicle, comprising: a power supply device extending from the power supply device, wherein the floor panel has a bead recessed along a side member extending in a vehicle front-rear direction below the floor panel, and the power supply device straddles the bead. And is disposed on the floor panel.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the power supply fixing structure for vehicles which can efficiently protect a power supply device and a cable from damage at the time of a collision.

FIG. 2 is a perspective view showing an implementation place of the vehicle power supply fixing structure according to the embodiment of the present invention. It is the figure which removed the seat of FIG. 1, and was seen from above. FIG. 5 is a diagram schematically illustrating movement of a battery accompanying deformation of a vehicle body at the time of a vehicle collision. It is the figure which showed the cross member of FIG.2 (b) from each direction. It is a figure showing the modification of the fragile part of Drawing 4 (b).

  A vehicle power supply fixing structure according to an embodiment of the present invention includes a vehicle floor panel and a power supply device that is disposed on the right or left side of the floor panel and has a predetermined cable extending from the inside in the vehicle width direction. In the vehicle power supply fixing structure, the floor panel has a bead recessed along a side member extending below the floor panel in the vehicle front-rear direction, and the power supply device is disposed on the floor panel across the bead. It is characterized by being.

  According to the above configuration, when a collision load is applied to the vehicle body from the outside in the vehicle width direction at the time of a side collision, a valley fold deformation occurs in the bead below the power supply device, and the floor panel is outside the bead in the vehicle width direction. Area moves upward. Due to this movement, a portion of the power supply device on the outside in the vehicle width direction is pushed up, and a portion of the power supply device on the inside in the vehicle width direction sinks. A cable is connected to the inside of the power supply device in the vehicle width direction. In many cases, the cable passes through the floor panel and goes to another location. If the above power supply unit is to sink the inside in the vehicle width direction, compared to the operation in the direction away from the floor panel, it will not pull the cable, protect the cable from damage, and discharge the collision load. Becomes possible.

  Further, in the above configuration, the bead is formed along the side member. Therefore, the rigidity of the floor panel is ensured by the side members, so that deformation starting from the bead is suppressed to a certain extent, and excessive movement of the power supply device can be prevented.

  The vehicle power supply fixing structure further includes a front cross member extending in the vehicle width direction on the floor panel in front of the power supply device and a rear cross member extending in the vehicle width direction on the floor panel behind the power supply device in the vehicle. And one or both of the front side cross member and the rear side cross member may have a predetermined weak portion that is weaker than the periphery at a location where the bead intersects.

  According to the above configuration, when a collision load is applied to the front and rear cross members from the outside in the vehicle width direction, since the fragile portions are formed along the beads, these cross members can also follow the deformation of the floor panel. Will be possible. Therefore, the above-described operation of sinking the power supply device on the inner side in the vehicle width direction is suitably realized.

  One or both of the front cross member and the rear cross member include an outer member having a hat-shaped cross section, and a reinforcement extending in the vehicle width direction inside the outer member. It may be formed in a force.

  Even with the above configuration, the cross member can follow the deformation of the floor panel. Therefore, the above-described operation of sinking the power supply device on the inner side in the vehicle width direction is suitably realized.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, other specific numerical values, and the like shown in the examples are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the specification and the drawings, elements having substantially the same function and configuration will be denoted by the same reference numerals, and redundant description will be omitted. Elements not directly related to the present invention will be omitted. I do.

  FIG. 1 is a perspective view showing an implementation place of a vehicle power supply fixing structure (hereinafter, fixing structure 100) according to an embodiment of the present invention. Hereinafter, in FIG. 1 and all other drawings of the present application, the vehicle front-rear direction is indicated by arrows F (Forward) and B (Backward), the left and right in the vehicle width direction are indicated by arrows L (Leftward), R (Rightward), and the vehicle up-down direction. Are exemplified by arrows U (Upward) and D (Downward), respectively.

  The fixing structure 100 fixes a power supply device (the battery 106 and the converter 108 in FIG. 2) to the floor panel 104 below each of the front rows of seats 102 and 103 in the vehicle interior. The fixed structure 100 has a unique function of suppressing damage to the battery 106, the converter 108, and cables during a vehicle collision, particularly when a side collision occurs.

  FIG. 2 is a diagram showing the seats 102 and 103 of FIG. 1 removed and viewed from above. A center tunnel 110 is provided at the center of the floor panel 104 in the vehicle width direction, and side sills 112 are provided at both ends in the vehicle width direction. On the floor panel 104, a front cross member 114 and a rear cross member 116 are provided on the right side, and a front cross member 117 and a rear cross member 117 are provided on the left side so as to extend in the vehicle width direction at the center tunnel 110 and each side sill. A cross member 119 is provided. A pair of left and right slide rails 120a and 120b for seats and slide rails 122a and 122b are provided on each front cross member and each rear cross member via brackets 118a and the like.

  The battery 106 is a power supply device that supplies electricity to an electronic device such as a motor. The battery 106 is located on the right side of the floor panel 104 in a range surrounded by the front cross member 114 and the rear cross member 116, and the slide rails 120a and 120b. Are located. Battery 106 is approximately rectangular and is mounted on floor panel 104 by a plurality of brackets. A plurality of cables 124 extend from the inside of the battery 106 in the vehicle width direction (hereinafter, abbreviated to the inside of the vehicle), and the cables 124 are routed from the battery 106 on the floor panel 104 inside the vehicle and toward the other part. I have.

  The converter 108 is a power supply device that converts and stabilizes a voltage. The converter 108 is located on the right side of the floor panel 104 in a range surrounded by the front cross member 117 and the rear cross member 119, and the slide rails 122a and 122b. Are located. A plurality of cables 126 extend from the inside of the vehicle of the converter 108, and the cables 126 extend from the converter 108 to other places through the through holes 128 of the floor panel 104.

  In the fixed structure 100, beads 130 and 132 are formed on the floor panel 104 in order to absorb a load at the time of a vehicle collision. The beads 130 and 132 are recesses extending in the front-rear direction in the floor panel 104, and have a role of inducing deformation and absorbing a collision load. Battery 106 and converter 108 are located on floor panel 104 across beads 130, 132, respectively. The bead 130 is formed along the high rigid side members 134 and 136 so as not to cause excessive deformation of the floor panel 104. The side members 134 and 136 are provided below the floor panel 104 in the vehicle front-rear direction.

  FIG. 3 is a diagram schematically illustrating the movement of the battery 106 accompanying the vehicle body deformation at the time of a vehicle collision. FIG. 3 shows the battery 106 of FIG. 2 as viewed from the rear of the vehicle. Hereinafter, the bead 130 on the battery 106 side will be described as an example as a representative of the beads 130 and 132 (see FIG. 2).

  As an example of a vehicle collision, it is assumed that a vehicle has collided with a pole such as a telephone pole from the side, that is, a so-called pole side collision. As shown in FIG. 3, when a load P1 is applied to the vehicle from the right side, first, the side sill 112 is deformed to the inside of the vehicle.

  The battery 106 is mounted on the floor panel 104 across the bead 130. Specifically, the inside of the battery 106 is mounted on the floor panel 104 by the mounting bracket 146a on the vehicle inside of the bead 130. Of the outside of the battery 106 in the vehicle width direction (hereinafter abbreviated as the vehicle outside), the front is mounted on the floor panel 104 via the front cross member 114 by the mounting bracket 146b at the vehicle outside of the bead 130. Have been. The rear side of the battery 106 on the vehicle outside is mounted on the floor panel 104 by a mounting bracket 146c on the vehicle outside of the bead 130.

  When receiving the load P1 from the outside of the vehicle, the floor panel 104 induces a valley fold deformation starting from the bead 130 below the battery 106. Then, the area of the floor panel 104 outside the bead 130 on the vehicle side moves upward with the bead 130 as a starting point in a rotating motion indicated by an arrow P2.

  The movement of the floor panel 104 along the arrow P2 pushes up the outside portion of the battery 106, and pushes the inside portion of the battery 106 inside the vehicle, while rotating the arrow P3 opposite to the arrow P2. Sinks along. A cable 124 (see FIG. 2) is connected to a portion of the battery 106 inside the vehicle. In many cases, the cable 124 is routed on the floor panel 104 and goes to another location. If the operation is to sink the inside of the battery 106 into the vehicle, the load P1 is passed while protecting the cable 124 from damage without pulling the cable 124 as compared with the operation in the direction away from the floor panel 104. be able to.

  In the fixing structure 100, the beads 130 are formed along the side members 134. The side member 134 has a hat-shaped cross section projecting downward from the floor panel 104, and the opening side is joined to the floor panel 104. The bead 130 that is depressed downward is formed on the floor panel 104 along the range of the hat-shaped cross section of the side member 134. That is, the bead 130 is formed in the floor panel 104 in a range where the rigidity is ensured by the side members 134. With this configuration, the deformation of the floor panel 104 starting from the bead 130 is suppressed to a certain extent by the side members 134. Therefore, excessive movement of the battery 106 can be prevented.

  FIG. 4 is a diagram showing the cross member of FIG. 2 from each direction. FIG. 4A shows the front cross member 114 as viewed from the rear of the vehicle. In the fixing structure 100, each cross member is also provided with each fragile portion as a portion that easily induces deformation at the time of collision. For example, an elliptical hollow having a long axis in the vehicle width direction is formed on the wall surface of the front cross member 114 on the battery 106 side, that is, on the rear wall, as a fragile portion 140 that is more fragile than the periphery. The fragile portion 140 is provided at a portion of the rear wall that intersects the bead 130. The fragile portion 140 can be realized as a configuration in which a load is easily concentrated or a configuration in which rigidity is reduced, such as a notch or a dent, in addition to hollowing.

  FIG. 4B is a diagram of the front cross member 114 and the rear cross member 116 of FIG. 2 as viewed from above. The rear cross member 116 also has a lightened portion formed as a weak portion 142 on the front wall on the battery 106 side. According to these configurations, when the load P1 shown in FIG. 4A is applied, for example, the front cross member 114 is deformed by following the rotating movement of the floor panel 104 indicated by the arrow P2 starting from the fragile portion 140. can do. As described above, the front cross member 114 and the rear cross member 116 follow the deformation of the floor panel 104 starting from the bead 130, absorb the collision load, and preferably realize the above-described submerging movement of the battery 106. It becomes possible to do.

  In the above configuration, when the load P1 that is the collision load is applied from the outside in the vehicle width direction, for example, the front cross member 114 is deformed into a “C” that protrudes to the front of the vehicle to a certain extent from the weak portion 140 as a starting point. I do. Further, the rear cross member 116 is deformed into a V-shape with the weak portion 142 as a starting point. Therefore, the area surrounded by the front cross member 114 and the rear cross member 116 extends back and forth.

  Due to the deformation of the front cross member 114, the mounting brackets 146b, 146c outside the fragile portions 140, 142 move slightly inside the vehicle. Therefore, the deformation of the front cross member 114 can assist the above-described movement of the battery 106 sinking into the vehicle interior, and contribute to receiving the collision load to the battery 106.

  In the fixing structure 100, the fragile portions 140 and 142 are provided on both the front cross member 114 and the rear cross member 116, but even if only one of them is provided, it is not useful for absorbing the collision load. It is possible.

  In the fixing structure 100, the rail bracket 118a also helps absorb the collision load. Of the plurality of rail brackets, the rail brackets 118a and 118b are installed on the front cross member 114 and the rear cross member 116 outside the bead 130 and the weak portions 140 and 142.

  As shown in FIG. 3, the rail bracket 118a extends above the battery 106 and supports the slide rail 120a (the same applies to the rail bracket 118a (FIG. 4B)). The slide rail 120a is disposed above the front cross member 114 and the rear cross member 116 so as to extend in the front-rear direction. When the load P1 is applied, the slide rail 120a shown in FIG. Therefore, the slide rail 120a can promote the deformation of the front cross member 114 and the rear cross member 116 along the arrow P2 via the rail brackets 118a and 118b.

  Hereinafter, the rear cross member 116 will be exemplified as a representative of the front cross member 114 and the rear cross member 116 in FIG. FIG. 5 is a diagram showing a modification of the fragile portion 142 of FIG. 4B. FIG. 5A is a diagram illustrating the rear cross member 116. The rear cross member 116 is composed of a plurality of members.

  FIG. 5B is an exploded view of the rear cross member 116 of FIG. FIG. 5B shows a state in which the outer member 116 a of the rear cross member 116 is partially cut and removed upward from the floor panel 104.

  The rear cross member 116 includes an outer member 116a having a hat-shaped cross section and a reinforcement 116b extending in the vehicle width direction inside the outer member 116a. As the fragile portion, a hollow fragile portion 142 (see FIG. 4A) may be provided on the outer member 116a, or a concave fragile portion 144 may be provided on the reinforcement 116b.

  The weak portion 144 is formed as a depression along the bead 130 on the upper surface of the reinforcement 116b. Even with the weak portion 144, the rear cross member 116 can be deformed following the rotating deformation of the floor panel 104 (see the arrow P2 in FIG. 3) starting from the weak portion 144. Therefore, even with this configuration, the above-described operation of sinking the battery 106 inside the vehicle can be suitably realized.

  The reinforcement 116b has a higher degree of freedom in shape than the outer member 116a. Each cross member needs to support the rigidity of the vehicle body, and in addition to the collision load, needs to have a rigidity according to a load for supporting the seat and requirements such as vibration and noise. By forming the fragile portion 144 in the reinforcement 116b while satisfying these requirements with the outer member 116a, it is possible to ensure both rigidity of the vehicle body and absorption of the collision load.

  As described above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. It is clear that those skilled in the art can conceive various changes or modifications within the scope of the claims, and these naturally belong to the technical scope of the present invention. I understand.

  INDUSTRIAL APPLICATION This invention can be utilized for a vehicle fixing structure.

100: the fixed structure, 102: seat, 104: floor panel, 106: battery, 108: converter, 110: center tunnel, 112: side sill, 114: front cross member, 116: rear cross member, 116a: outer member 116b: Reinforce, 117: Front cross member, 118a: Front rail bracket, 118b: Rear rail bracket, 119: Rear cross member, 120a: Outside slide rail, 120b: Inside slide rail, 122a ... Slide rail on the outside of the vehicle, 122b ... Slide rail on the inside of the vehicle, 124 ... Cable, 126 ... Cable, 128 ... Through hole, 130 ... Bead on the right, 132 ... Bead on the left, 134 ... Side member on the right, 136 ... Left Side members, 140 ... front crossmen Weak portion, 142 ... rear cross member of the fragile portion, fragile portion 144 ... modification, 146A～146c ... mounting bracket, P1 ... load from the vehicle exterior side, an arrow showing a modification of the P2 ... floor panel,

Claims (3)

A vehicle power supply fixing structure comprising: a vehicle floor panel; and a power supply device disposed on the right or left side of the floor panel and extending a predetermined cable from the inside in the vehicle width direction.
The floor panel has a bead recessed along a side member extending in a vehicle front-rear direction below the floor panel,
The power supply fixing structure for a vehicle, wherein the power supply device is disposed on the floor panel across the bead. The vehicle power supply fixing structure further includes:
A front cross member extending in the vehicle width direction on the floor panel in front of the power supply device;
A rear cross member extending in the vehicle width direction on the floor panel at the vehicle rear of the power supply device,
The vehicle power supply fixing structure according to claim 1, wherein one or both of the front cross member and the rear cross member have a predetermined weak portion that is weaker than the periphery at a location where the bead intersects. . One or both of the front cross member and the rear cross member include an outer member having a hat-shaped cross section, and a reinforcement extending in the vehicle width direction inside the outer member,
The power supply fixing structure for a vehicle according to claim 2, wherein the fragile portion is formed in the reinforcement.

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