JP7323033B2 - Vehicle power supply fixing structure - Google Patents

Description

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

Hybrid electric vehicles (HEV) include a type that can run by itself with only a motor, and a type that uses an engine as a main power source and uses a motor for assistance. Compared to the former type, the latter type requires less driving power from the motor. ) can be relatively small. As an example of installation of a power supply device, in the technology of Patent Document 1, a running battery is installed in the space below the front seats.

JP 2018-39483 A

In the technique disclosed in Patent Document 1, the driving battery is installed between a pair of left and right lower rails of the front seat for the purpose of suppressing damage to the driving battery in the event of a side collision. However, at present, not only the protection of the power supply itself, but also the prevention of damage to the cables extending from the power supply are required. Damage to cables can also lead to short circuits, so there is a need for thorough preventative measures that take into account even the deformation of the car body in the event of a collision.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle power source fixing structure capable of efficiently protecting a power source device and a cable from damage during a collision.

In order to solve the above problems, a vehicle power supply fixing structure according to the present invention is a vehicle power supply fixing structure in which a power supply is fixed to the right or left side of a floor panel of a vehicle, wherein the power supply includes: A predetermined cable extends from the inside in the vehicle width direction, and the vehicle power source fixing structure includes a front bracket for attaching the power source device to the floor panel, and a rear side of the front bracket provided behind the vehicle for attaching the power source device to the floor panel. each of the front side bracket and the rear side bracket has a leg extending inward from the power supply device in the vehicle width direction from the lower side of the power supply device, and a leg bent toward the floor panel and connected to the floor panel. It is characterized by having a connection part to be connected.

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

1 is a perspective view showing a place where a vehicle power source fixing structure according to an embodiment of the present invention is implemented; FIG. FIG. 2 is a view from above with the seat of FIG. 1 removed; 3 is a perspective view of the vicinity of the converter in FIG. 2 as seen from each direction; FIG. 3 is an enlarged perspective view of the vicinity of the converter in FIG. 2; FIG. FIG. 4 is a diagram schematically showing movement of a converter accompanying vehicle body deformation during a side collision;

A power source fixing structure for a vehicle according to an embodiment of the present invention is a power source fixing structure for a vehicle in which a power source device is fixed to the right or left side of a floor panel of a vehicle, wherein the power source device is fixed by a predetermined cable from the inside in the vehicle width direction. The vehicle power supply fixing structure includes a front bracket for attaching the power supply device to the floor panel, and a rear bracket provided behind the front bracket for attaching the power supply device to the floor panel. Each of the rear brackets has a leg extending inward of the power supply in the vehicle width direction from the lower side of the power supply, and a connecting part bent from the leg toward the floor panel and connected to the floor panel. characterized by

According to the above configuration, when a collision load is applied to the power supply device from the outside in the vehicle width direction due to, for example, a side collision, the front bracket and the rear bracket buckle at the bent portion between the leg portion and the connection portion, and the power supply device is disengaged. Move so as to sink toward the floor panel on the inner side of the vehicle width direction. In many cases, the cables extending from the vehicle width direction inner side of the power supply device are routed on the vehicle-interior floor panel and directed to other locations. If the power supply unit is moved by sinking into the floor panel on the inner side of the vehicle width direction, compared to moving away from the floor panel, the cable will not be pulled, and the cable will be protected from damage while the collision load is reduced. It becomes possible to parry the

The vehicle power source fixing structure further includes a front protector installed on the floor panel along the vehicle front side of the power source device and extending outward in the vehicle width direction from the power source device, and a floor panel along the vehicle rear side of the power source device. A rear protector is installed and extends outward in the vehicle width direction from the power supply device, and one of the front protector and the rear protector preferably has lower rigidity against a load from the vehicle width direction outer side than the other.

According to the above configuration, when a structure such as a side sill moves inward in the vehicle width direction due to a side collision, the front protector and the rear protector extend further outward in the vehicle width direction than the power supply device. Even if an object moves, contact with the power supply can be prevented. In addition, by providing a rigidity difference between the front protector and the rear protector, when a load is applied from the outside in the vehicle width direction, the protector on one side can be preferentially deformed and the load to the power supply can be received. By guiding the movement of the power supply device along with the deformation of the vehicle body in a predetermined direction, the movement of the power supply device in the direction in which the cable is pulled can be prevented, and the cable can be protected from damage.

A vehicle power source fixing structure according to another embodiment of the present invention is a vehicle power source fixing structure for fixing a power source device to the right or left side of a floor panel of a vehicle, wherein the power source device is fixed from the inside in the vehicle width direction. The vehicle power source fixing structure includes a front protector installed on a floor panel along the vehicle front side of the power source device and extending outward in the vehicle width direction from the power source device, and a vehicle rear side of the power source device. and a rear protector that is installed on the floor panel and extends outward in the vehicle width direction from the power supply device, one of the front protector and the rear protector having greater rigidity against a load from the outside in the vehicle width direction than the other. A power supply fixing structure for a vehicle, characterized by a low .

Also in the above configuration, the front protector and the rear protector extend further outward in the vehicle width direction than the power supply device, thereby preventing contact between the power supply device and a structure that has moved from the outside of the vehicle. Further, by providing a rigidity difference between the front protector and the rear protector, when a load is applied from the outside in the vehicle width direction, the protector on one side can be preferentially deformed and the load to the power supply can be transferred. In this way, by guiding the movement of the power supply device along with the deformation of the vehicle body in the direction set in advance, it is possible to prevent the movement of the power supply device in the direction in which the cable is pulled and to protect the cable from damage.

One is a rear protector, and the rear protector preferably has a fragile portion that extends inward in the vehicle width direction from the power supply device and the front protector and has lower rigidity than the front protector.

According to the above configuration, the rear protector can be preferentially deformed, and the load applied to the power supply device can be efficiently parried by the operation of rotating around the fragile portion.

A part of the front protector and the rear protector may be inserted into the space between the vehicle width direction outer side slide rail of the pair of left and right seat slide rails and the floor panel.

When a side collision occurs, the slide rail moves so as to incline inward in the vehicle width direction due to the load from the outside in the vehicle width direction. Due to the presence of the slide rails above, even if the power supply device were to rise from the floor panel, such movement would be prevented. Therefore, even with the above configuration, it is possible to prevent the power supply device from moving in the direction in which the cable is pulled, and to promote the sinking movement described above.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in these examples are merely examples for facilitating understanding of the invention, and do not limit the invention unless otherwise specified. In the present specification and drawings, elements having substantially the same functions and configurations are denoted by the same reference numerals to omit redundant description, and elements that are not directly related to the present invention are omitted from the drawings. do.

FIG. 1 is a perspective view showing a place where a vehicle power source fixing structure (hereinafter referred to as a fixing structure 100) according to an embodiment of the present invention is implemented. Hereinafter, in FIG. 1 and all other drawings of the present application, arrows F (Forward) and B (Backward) indicate vehicle front-rear directions, left and right arrows L (Leftward) and R (Rightward) respectively, and vertical directions of the vehicle. are exemplified by arrows U (Upward) and D (Downward), respectively.

The main purpose of the fixing structure 100 is to fix the power supply device (converter 106 in FIG. 2) to the floor panel 104 below the seat 102 on the left side of the front row in the passenger compartment. In addition, the fixing structure 100 has a unique function of reducing damage to the converter 106 and its cable 122 in the event of a vehicle collision, particularly a side collision.

FIG. 2 is a view from above with the seat of FIG. 1 removed. The fixing structure 100 fixes a DCDC converter (converter 106 ) on the left side of the floor panel 104 .

An outline of the structure on floor panel 104 will be described. A center tunnel 110 is provided in the center of the floor panel 104 in the vehicle width direction, and a side sill 112 is provided at the end (for example, the left end) in the vehicle width direction. A front cross member 114 and a rear cross member 116 are provided on the floor panel 104 so as to extend over the center tunnel 110 and the side sills 112 in the vehicle width direction. A pair of left and right seat slide rails 120 a and 120 b are provided on the front cross member 114 and the rear cross member 116 via brackets 118 . Converter 106 is arranged on the left side of floor panel 104 in an area surrounded by front cross member 114, rear cross member 116, and slide rails 120a and 120b.

The converter 106 is a type of power supply device, and is a device that converts and stabilizes voltage. A plurality of cables 122 extend from the inside of converter 106 in the vehicle width direction (hereinafter abbreviated as the vehicle inside), and cables 122 pass from converter 106 through through hole 124 of floor panel 104 toward other locations. A battery 126 is arranged as another power supply device on the right side of the floor panel 104 . The technical idea of the fixing structure 100 is to fix and protect the converter 106 , but it can also be applied to fix and protect the battery 126 .

3A and 3B are perspective views of the vicinity of the converter 106 in FIG. 2 viewed from various directions. FIG. 3(a) is a diagram of the converter 106 and the like in FIG. 2 viewed from the upper right side of the front side of the vehicle. The converter 106 is rectangular and is covered on the front and back sides by a front protector 132 and a rear protector 128 . A portion of the converter 106 inside the vehicle, that is, a portion to which the cable 122 is connected is open. Also extends to the inside of the vehicle, so it is prevented from contacting other structures.

FIG. 3(b) is a view of the converter 106 and the like as seen from the upper right side of the rear side of the vehicle. Most of the upper surface of the converter 106 and the inside of the vehicle where the cable 122 is connected are open. Converter 106 is gripped from the front and rear by front protector 132 and rear protector 128, and is attached to floor panel 104 by front bracket 133a, rear bracket 133b, and the like.

FIG. 4 is an enlarged perspective view of the vicinity of converter 106 in FIG. FIG. 4(a) is a diagram of the converter 106 and the like viewed from the upper right side of the front side of the vehicle. Both the front side bracket 133a and the rear side bracket 133b are provided in parallel at two locations on the front and rear sides of the converter 106, and are fastened to the floor panel 104 (see FIG. 3B, etc.) by fasteners 138a and 138b.

Front bracket 133 a is provided on the front side of converter 106 and adjacent to front protector 132 . Rear bracket 133b is provided at a location adjacent to rear protector 128 on the rear side of converter 106 and behind front bracket 133a. Leg portions 134 a and 134 b of front bracket 133 a and rear bracket 133 b extend from the lower side of converter 106 toward the vehicle interior side of converter 106 . Connecting portions 136a and 136b are provided at the tips of the leg portions 134a and 134b. The connecting portions 136a, 136b are bent toward the floor panel 104 from the leg portions 134a, 134b and connected to the floor panel 104 with fasteners 138a, 138b.

Front protector 132 mainly protects the front side surface of converter 106 . Front protector 132 includes a wall-shaped front wall portion 132 a that covers the side surface of converter 106 and a front upper portion 132 b that bends from the upper end of front wall portion 132 a to grip the upper surface of converter 106 . Front protector 132 extends outward in the vehicle width direction (hereinafter abbreviated as vehicle exterior) from converter 106 and is connected to vehicle exterior protector 130 .

FIG. 4(b) is a view of the converter 106 and the like viewed from the upper left on the rear side of the vehicle. Rear protector 128 mainly protects the rear side surface of converter 106 . Rear protector 128 also includes a wall-shaped rear wall portion 128a that covers the side surface of converter 106, and a rear upper portion 128b that bends from the upper end of rear wall portion 128a to grip the upper surface of converter 106. FIG. The rear side wall portion 128a is longer than the converter 106 in the vehicle width direction, and is hollowed out in various places. In particular, the rear protector 128 extends outside the converter 106 and is connected to the outside protector.

Vehicle-exterior protector 130 is connected to the vehicle-exterior ends of rear protector 128 and front protector 132 and protects the vehicle-exterior side surface of converter 106 . Vehicle-exterior protector 130 can prevent contact between converter 106 and a vehicle-exterior structure, even if the vehicle-exterior structure moves toward the vehicle interior during a side collision or the like.

The fixing structure 100 is provided at various locations with a structure that absorbs the load that may be applied to the converter 106 at the time of vehicle collision. First, as shown in FIG. 4(a), the front bracket 133a and the rear bracket 133b have bent portions between the leg portions 134a and 134b and the connection portions 136a and 136b, which are likely to induce deformation. Mountain folds 148a, 148b and valley folds 150a, 150b are formed. These mountain-folded portions 148a, 148b and valley-folded portions 150a, 150b are capable of receiving a load from the outside of the vehicle and buckling to receive the load.

FIG. 5 is a diagram schematically showing movement of converter 106 accompanying deformation of the vehicle body during a side collision. FIG. 5(a) is a diagram schematically showing movement of converter 106 accompanying deformation of the vehicle body during a side collision as viewed from the rear of the vehicle. As an example of a vehicle collision, a situation in which a pole such as a telephone pole collides from the side, a so-called pole side collision is assumed.

When a load P1 is applied to the vehicle from the left side, the side sill 112 is first deformed toward the interior of the vehicle. At this time, direct contact between structures such as side sills 112 and converter 106 is prevented by exterior protector 130 (see FIG. 4B), front protector 132 and rear protector 128 . Furthermore, the load P1 from the outside of the vehicle that may be applied to each protector is received by buckling the mountain-folded portion 148b and the valley-folded portion 150b of the rear bracket 133b in the direction of the arrow P2 so as to fold into a bellows shape. This buckling also occurs in the front side bracket 133a shown in FIG. 4(a). As a result, the load applied to the fastener 138b is reduced, and the converter 106 can be held on the floor panel 104 by preventing the fastener 138b from coming off.

The buckling described above causes the entire converter 106 to move in the direction of arrow P2 so as to sink toward the interior floor panel 104 . As shown in FIG. 2, a cable 122 extends through the floor panel 104 from the inside of the converter 106 . If converter 106 were to float off floor panel 104 or move away from cable 122, cable 122 would be pulled, potentially causing damage to cable 122 and electrical leakage. If the converter 106 is moved to sink into the floor panel 104 inside the vehicle, the load can be absorbed without pulling the cable 122, and the cable 122 is efficiently protected from damage, compared to the movement away from the floor panel 104. it becomes possible to

FIG. 5(b) is a top view of the converter 106 corresponding to FIG. As a portion that absorbs the load, a fragile portion 140 is provided on the vehicle interior side of the rear protector 128 at a location that extends further toward the vehicle interior than the converter 106 and the front protector 132 . As shown in FIG. 4B, in the fragile portion 140, two cutouts 142 and 144 are formed from the rear upper portion 128b to the rear wall portion 128a. A cutout 146 is formed in the rim, forming a fragile structure. Due to this structure, the fragile portion 140 has lower rigidity against a load from the outside of the vehicle than the front protector 132 and the portion of the rear protector 128 that extends along the converter 106, thereby preventing a vehicle collision. It has a configuration that makes it easy to induce deformation at times.

FIG. 5(b) also shows the load P1 from the outside of the vehicle. When the load P1 is applied to the front protector 132 and the rear protector 128, the fragile portion 140 provided on the vehicle inner side of the rear protector 128 is preferentially deformed. Specifically, the rear protector 128 closes the notches 142 and 144 of the fragile portion 140 and deforms in the direction of the arrow P3 as seen from above into a "dogleg" shape. In addition, the front protector 132 and the rear protector 128 are deformed into a "V" shape as a whole so that the inner side of the vehicle opens when viewed from above, and the converter 106 is released to the inner side of the vehicle to receive the load. The deformation behavior of the front protector 132 and the rear protector 128 also promotes the buckling of the rear bracket and the like shown in FIG. 5(a) in the sinking direction.

As described above, in the fixing structure 100, the rigidity difference is provided between the front protector 132 and the rear protector 128, so that the rear protector 128 on one side is prioritized when a load is applied from the outside in the vehicle width direction. It is possible to deform it to shed the load. As described above, if the converter 106 lifts off the floor panel 104 or moves away from the cable 122, the cable 122 will be pulled, potentially causing damage to the cable 122 and leakage. With the fixing structure 100, the behavior of the converter 106 in the event of a side collision is such that it approaches the location where the cable 122 is routed while slightly rotating in the direction P4 due to preferential deformation of the rear protector 128. be in motion. With this behavior, cable 122 is not pulled and damage to cable 122 can be prevented. The magnitude of this rotating motion (arrow P4) can be controlled by the degree of difference in rigidity of front protector 132 and rear protector 128 at fragile portion 140 from other portions.

In addition to the above, as shown in FIG. 5B, in the fixing structure 100, a part of the front protector 132 and the rear protector 128 is placed in the space between the slide rail 120a on the outside of the vehicle and the floor panel 104. inserted. When the side sill 112 moves toward the vehicle interior during a side collision, the slide rail 120a may also tilt toward the vehicle interior due to the load P1. Therefore, even if the converter 106 were to be lifted from the floor panel 104 together with the protectors, the slide rail 120a would interfere with the front upper portion 132b (see FIG. 4(a), etc.) and the rear upper portion 128b outside the vehicle. , the floating of the converter 106 is prevented. Therefore, it is possible to prevent converter 106 from moving in the direction in which cable 122 is pulled, and to encourage the above-described sinking movement (arrow P2).

As described above, in the fixing structure 100, the movement of the converter 106 due to the deformation of the vehicle body is directed in a preset direction such as sinking into the floor panel 104 inside the vehicle (arrow P2 in FIG. 5A). leading. As a result, the fixing structure 100 fully protects the converter 106 by absorbing the collision load from the start to the end of deformation of the vehicle body during a vehicle collision, and prevents the movement of the converter 106 in the direction in which the cable 122 is pulled. It is possible to suppress the damage of the cable 122 by .

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive of various modifications or modifications within the scope described in the claims, and these also belong to the technical scope of the present invention. Understood.

INDUSTRIAL APPLICABILITY The present invention can be used for a vehicle power source fixing structure.

DESCRIPTION OF SYMBOLS 100... Fixed structure 102... Seat 104... Floor panel 106... Converter 108... Protector 110... Center tunnel 112... Side sill 114... Front cross member 116... Rear cross member 118... Bracket 120a... Vehicle-exterior slide rail 120b Vehicle-interior slide rail 122 Cable 124 Through hole 126 Battery 128 Rear protector 128a Rear wall 128b Rear upper part 130 Vehicle-outside protector , 132 Front protector 132a Front wall 132b Front upper part 133a Front bracket 133b Rear bracket 134a, 134b Legs 136a, 136b Connector 138a, 138b Fastener 140 Weak portions 142, 144 Notches 146 Lightening 148 Mountain folds 150 Valley folds P1 Load from outside the vehicle P2 Arrow indicating sinking movement of converter P3 Weak Arrow indicating deformation of part, P4... Arrow indicating rotation of converter

Claims (8)

a power supply that is fixed to the right or left side on the floor panel of the vehicle;
a predetermined cable extending from the vehicle width direction inner side of the power supply device;
one or more legs extending inward in the vehicle width direction from the lower side of the power supply device;
and a protector arranged along one or both of the vehicle front side and the vehicle rear side of the power supply device,
The power supply fixing structure for a vehicle, wherein the protector has a fragile portion provided at a position on the inner side in the vehicle width direction of the power supply device. 2. The power source fixing structure for a vehicle according to claim 1, wherein the protector is connected to the leg portion inside the power source device in the vehicle width direction. 3. The vehicle power source fixing structure according to claim 2, wherein the fragile portion is provided to extend to the leg portion below the protector. 4. The power source fixing structure for a vehicle according to claim 3, wherein the leg portion has a connection portion that is bent downward on the inner side in the vehicle width direction of the power supply device and connected to the floor panel. the portion of the protector that extends along the power supply device extends along the side surface and the top surface of the power supply device,
The fragile portion is in a notched state so as to separate a portion of the protector that extends along the power supply device from a portion that extends inwardly of the power supply device in the vehicle width direction. Item 2. The vehicle power supply fixing structure according to item 1. 2. The power source fixing structure for a vehicle according to claim 1, wherein the protector has a vehicle exterior protector that is spaced outward from the power supply device in the vehicle width direction and extends in the front-rear direction. The floor panel is provided with a predetermined through hole through which the cable is passed,
The power supply device is fixed outside the through-hole of the floor panel in the vehicle width direction,
a pair of the one or more legs extending inward in the vehicle width direction from the power supply device to reach front and rear sides of the through hole,
2. The vehicle power source fixing structure according to claim 1, wherein each of the pair of leg portions has a connection portion bent downward inward in the vehicle width direction and connected to the floor panel. 8. The protector according to any one of claims 1 to 7, wherein a part of said protector is inserted into a space between said floor panel and a vehicle width direction outer side slide rail of a pair of left and right seat slide rails. 1. A power supply fixing structure for a vehicle according to 1.

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