JP7306556B2 - Fixed structure of electrical equipment - Google Patents

Description

The present invention relates to a fixing structure for electrical equipment.

Vehicles are equipped with electrical devices (batteries, converters, etc.) that are used to supply power to the starter when the engine is started and to power electrical components. Among conventional fixing structures for electric devices, there is a battery arrangement structure in which a battery is arranged in a space under a seat of a vehicle (see, for example, Patent Document 1). In this structure, an indoor air-conditioning duct is arranged between the battery and the side sill provided on the floor panel with a distance from the side sill. I'm trying to attach it to a part of the.

JP 2015-74406 A

However, in the above-described conventional fixing structure for electric devices, the indoor air conditioning duct is arranged between the battery and the side sill provided on the floor panel, and the indoor air conditioning duct is attached to the battery and part of the side sill. Therefore, there is a problem that the impact load input at the time of a side collision cannot be sufficiently absorbed.
In addition, with the conventional fixing structure of electric devices, when the size of the battery increases in the future, it will be difficult to place it at a sufficient distance from the side sills, etc. There was a concern that the battery might be damaged or dropped due to being pinched.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and its object is to move the electric device and the floor cross member inward in the vehicle width direction while maintaining their fixation in the event of a side collision. An electric device capable of preventing the electric device from colliding with the car body structure by maintaining the fixation between the electric device and the car body without breaking it even after the collision while absorbing the impact load by deformation of the bracket. To provide a fixed structure.

In order to solve the above-described problems of the prior art, the present invention provides an electric vehicle having an electric device provided on a floor panel in a vehicle interior, and a floor cross member provided on the floor panel and extending in the vehicle width direction. In the device fixing structure, the electric device includes a floor cross member fixing portion connected to the floor cross member, and the electric device fixed to the floor panel on the vehicle inner side of the electric device relative to the floor cross member fixing portion. and a floor fixing portion , wherein a closed cross-section portion is provided inside the vehicle from the electric device, and the floor fixing portion is connected to the closed cross-section portion.

As described above, the electric device fixing structure according to the present invention includes an electric device provided on a floor panel in a vehicle interior, and a floor cross member provided on the floor panel and extending in the vehicle width direction. In the fixing structure of , the electric device includes a floor cross member fixing portion connected to the floor cross member, and a floor fixing portion fixed to the floor panel inside the electric device from the floor cross member fixing portion. and
Therefore, in the fixing structure of the electric device of the present invention, in the event of a side collision, if the collision area is wide, the front and rear floor cross members receive the impact load and the floor panel is deformed, causing the front and rear floor cross members to move inward in the vehicle width direction. move to At this time, since the floor cross member with high rigidity deforms little, it moves toward the inside of the vehicle while the electric device and the floor cross member are kept fixed.
Therefore, according to the fixing structure of the electric device of the present invention, the fixing between the electric device and the vehicle body can be maintained without breaking even after the collision while absorbing the impact load applied at the time of the side collision, and the electric device can be secured. Collision with the vehicle body structure can be prevented.

1 is a plan view of a battery of an electric device to which a fixing structure according to an embodiment of the invention is applied, viewed from above the vehicle; FIG. It is a top view which expands and shows the Z section of FIG. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2; FIG. 2 is a plan view of the electrical device main body and housing case of the electrical device of FIG. 1 as viewed from above the vehicle; Fig. 5 is a front view of the electric device main body and the housing case in Fig. 4 as seen from the front of the vehicle; FIG. 5 is a perspective view of the electric device main body and the housing case in FIG. 4 as seen obliquely from above on the front side of the vehicle; FIG. 5 is a perspective view of the electrical device main body and housing case in FIG. 4 as seen obliquely from above on the rear side of the vehicle;

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail based on the illustrated embodiments.
1 to 7 show fixing structures for electrical devices according to embodiments of the present invention. 1 to 3, the direction of arrow Fr indicates the front of the vehicle, the direction of arrow O indicates the outside of the vehicle, and the direction of arrow U indicates the upper side of the vehicle. The arrow X direction indicates the vehicle width direction, and the arrow Y direction indicates the vehicle front-rear direction.

As shown in FIGS. 1 to 3, the electric device fixing structure according to the embodiment of the present invention fixes an electric device 2 provided below a seat (not shown) on a floor panel 1 in a vehicle interior. It has a center tunnel 3 and side sills 4 extending in the longitudinal direction of the vehicle, and a front floor cross member 5 and a rear floor cross member 6 extending in the width direction of the vehicle. These floor panel 1, center tunnel 3, side sill 4, front floor cross member 5, and rear floor cross member 6 constitute a part of the vehicle body to which the fixing structure of this embodiment is applied. 5 and the rear floor cross member 6 are generally stiffer than the floor panel 1 . Also, the electric device 2 may be, for example, a battery, a converter, or the like, but the electric device 2 of this embodiment is applied to a battery.

The center tunnel 3 of this embodiment is formed to have a substantially U-shaped cross section that protrudes upward from the vehicle and is arranged in the central portion of the vehicle, and the side sills 4 are arranged on both left and right sides of the vehicle. The front floor cross member 5 is arranged on the vehicle front side with respect to the electric device 2, and the rear floor cross member 6 is arranged on the vehicle rear side with respect to the electric device 2. The ends of the side floor cross members 6 are connected and fixed to the center tunnel 3 and the side sills 4, respectively. Further, the top surface of the front floor cross member 5 is set to be lower than the top surface of the electrical device 2, while the top surface of the rear floor cross member 6 is equal to or higher than the bottom surface of the electrical device 2 or the electrical device. 2 is set to be lower than the bottom surface.
As shown in FIG. 1, the electric device 2 is arranged in a space region R surrounded by the center tunnel 3, the side sills 4, and the front and rear floor cross members 5 and 6 extending in the width direction of the vehicle. ing. Moreover, as shown in FIG. 3, a floor side member 11 extending in the longitudinal direction of the vehicle is provided on the lower surface of the floor panel 1 of the electric device 2 positioned below the vehicle. Therefore, the electric device 2 is arranged across the floor side member 11 in the vehicle width direction. A side door 12 is provided above the side sill 4 in the vehicle.

As shown in FIGS. 1 to 7, front and rear fixing portions 21 and 22 and an inner fixing portion 23 are provided at the vehicle front and rear portions and the vehicle inner side portion of the electric device 2 in the present embodiment as fixing portions of the electric device 2 to the vehicle body. is provided, and a fixing portion to the vehicle body is not provided on the vehicle outer side portion of the electric device 2 . The front side fixing portion 21 and the rear side fixing portion 22 are provided at the same position in the vehicle width direction, and are positioned further outside the vehicle than the floor side member 11 . located inside. The front fixing part 21 is arranged on the upper side of the electric device 2 , and the rear fixing part 22 and the inner fixing part 23 are arranged on the lower side of the electric device 2 .
The front fixing portion 21 and the rear fixing portion 22 are stays extending in the vehicle front-rear direction from the electric device 2, and one end of the front fixing portion 21 is fixed to the front floor cross member 5 using fasteners such as bolts. One end of the rear fixing portion 22 is fixed to the rear floor cross member 6 using a fastener such as a bolt. The inner fixing portion 23 is a bracket that extends in the vehicle width direction from the electric device 2 and is fixed to the center tunnel 3 or the floor panel 1 near the center tunnel 3 using fasteners such as bolts. Moreover, the inner fixed portion 23 is configured to be weaker than the front and rear fixed portions 21 and 22 against the impact load in the vehicle width direction. The other ends of the front fixing portion 21 and the rear fixing portion 22 are fixed to a housing case which will be described later.

In the fixing structure of this embodiment, as shown in FIG. 2, the front and rear fixing portions 21 and 22 are positioned on the outer half side of the electric device 2 in the vehicle width direction, and are positioned at the outer ends of the electric device 2 in the vehicle width direction. It is provided at a location located on the inner side of the vehicle than 2a. That is, the front and rear fixing portions 21 and 22 are arranged between the central axis C of the electrical device 2 and the outer end 2a of the electrical device 2 in the vehicle width direction of the electrical device 2 . As a result, the electric device 2, the front floor cross member 5, and the rear floor cross member 6 move together in the event of a vehicle side collision.

In addition, as shown in FIGS. 3 to 6, the inner fixing portion 23 of the present embodiment has a shape having a plurality of bending points 23C in the vehicle width direction between the vehicle body side mounting point 23A and the electrical device side mounting point 23B. Various shapes such as a crank shape, a Z shape, a U shape, and a hat shape are applicable as the shape of the bracket. The inner fixing portion 23 having the bending point 23C is easily deformed by an impact load in the vehicle width direction.
On the other hand, as shown in FIG. 3, closed cross-sectional portions 13 extending in the vehicle front-rear direction are provided on the lower surfaces of the floor panels 1 positioned on the left and right sides of the center tunnel 3 in the vehicle width direction of the present embodiment. The closed cross-section portion 13 is composed of the floor panel 1 and a tunnel side member 9 extending in the vehicle front-rear direction and having a hat-shaped cross section and joined to the lower surface of the floor panel 1 . A bracket that constitutes the inner fixing portion 23 of the electric device 2 is connected and fixed to the closed section portion 13 . By fixing the bracket of the inner fixing portion 23 to such a portion of the closed cross-section portion 13, the deformation of the vehicle body side mounting point 23A portion of the inner fixing portion 23 due to the impact load input from the vehicle side surface is reduced. The bracket of the fixing portion 23 is configured to reliably generate deformation.

Furthermore, a space S is provided between the bottom surface 2 b of the electrical device 2 and the floor panel 1 . By providing such a space S, the electric device 2 can affect the floor panel 1 in the event of a wide-range vehicle side collision in which an impact load is applied to both the front floor cross member 5 and the rear floor cross member 6. The structure is such that it can be moved together with the front side floor cross member 5 and the rear side floor cross member 6 without being bent.

In addition, in the fixing structure of this embodiment, the distance L1 in the vehicle width direction between the electric device 2 and the center tunnel 3 and the distance L2 in the vehicle width direction between the electric device 2 and the side sill 4 are shown in FIG. , the distance L3 between the electrical device 2 and the front floor cross member 5 in the vehicle longitudinal direction and the distance L4 between the electrical device 2 and the rear floor cross member 6 in the vehicle longitudinal direction are set larger than each other. In the cage (L1, L2>L3, L4), the electric device 2 is arranged at a position distant from the center tunnel 3 and the side sills 4. This reduces the occurrence of collisions between the electric device 2 and the center tunnel 3 and side sills 4 in the event of a vehicle side collision.

Moreover, seat brackets 7 and 8 having a hat-shaped cross section for fixing a seat (not shown) are provided on the upper surfaces of the front floor cross member 5 and the rear floor cross member 6, respectively, as shown in FIGS. Fixed. These seat brackets 7 and 8 are arranged between the front and rear fixed portions 21 and 22 of the electric device 2 and the side sill 4 in the vehicle width direction, and are provided at positions adjacent to the front and rear fixed portions 21 and 22. . The seat brackets 7, 8 serve to reinforce the front floor cross member 5 and the rear floor cross member 6, and are positioned outside the vehicle relative to the front and rear fixing portions 21, 22 of the electric device 2 in the event of a vehicle side collision. The deformation of the front side floor cross member 5 and the rear side floor cross member 6 is suppressed by the seat brackets 7 and 8, and the electric device 2 moves along with the displacement of the front side floor cross member 5 and the rear side floor cross member 6. It is

On the other hand, as shown in FIGS. 1 to 7, the electrical device 2 applied to the fixing structure of the present embodiment includes an electrical device main body 2A having a square shape in plan view and a housing case covering the electrical device main body 2A. 2B. Between the periphery of the electrical device main body 2A and the housing case 2B, gaps c1 and c2 are provided. As shown in FIG. A gap larger than the gap c2 with respect to the other surfaces is provided (c1>c2). Therefore, the outer end of the housing case 2B extends further toward the side of the vehicle from the outer end of the electrical device main body 2A, and a predetermined gap c1 is provided between the electrical device main body 2A and the housing case 2B. is configured as Engagement portions 24 and 25 that engage with the vehicle front and rear surfaces of the electrical device main body 2A are provided on the vehicle front and rear surfaces of the housing case 2B. are provided to hold the gaps c1 and c2 provided between the electrical device main body 2A and the housing case 2B. However, a space is ensured between the housing case 2B and the side sill 4 on the side of the vehicle, and the electric device main body 2A and the housing case 2B are separated from the side sill 4 (distance L2 in FIG. 2). are placed. As a result, the housing case 2B deforms in the event of a vehicle side collision, thereby functioning as an impact load absorbing member, and the impact to the electrical device main body 2A is mitigated.

As described above, the structure for fixing the electric device 2 according to the embodiment of the present invention is a structure for fixing the electric device 2 provided on the floor panel 1 in the vehicle interior below the seat. It has a tunnel 3, a side sill 4, and a front floor cross member 5 and a rear floor cross member 6 extending in the width direction of the vehicle. The front floor cross member 5 and the rear floor cross member 6 are connected and fixed to the center tunnel 3 and the side sills 4, respectively, while the electric device 2 is connected to the center tunnel 3, the side sills 4, the front floor cross member 5 and the rear floor cross member 5. It is arranged in the region R surrounded by the side floor cross members 6 . Front and rear fixing portions 21 and 22 and an inner fixing portion 23 are provided as fixing portions of the electric device 2 to the vehicle body at the vehicle front and rear portions and the vehicle inner side portion of the electric device 2. The front and rear fixing portions 21 and 22 are electrically It extends in the longitudinal direction of the vehicle from the device 2 and is fixed to the front side floor cross member 5 and the rear side floor cross member 6 , and the inner fixing part 23 is fixed to the center tunnel 3 or the floor panel 1 near the center tunnel 3 . Further, the front and rear fixing portions 21 and 22 are located on the outer half side of the electric device 2 in the vehicle width direction, and are provided at locations located on the vehicle inner side than the outer end 2a of the electric device 2 in the vehicle width direction, The inner fixing portion 23 is composed of a bracket formed in a shape having a plurality of bending points 23C in the vehicle width direction between the vehicle body side mounting point 23A and the electrical device side mounting point 23B, and is connected to the bottom surface 2b of the electrical device 2. A space S is provided between the floor panel 1 and the floor panel 1 .

Therefore, in the fixing structure of the electric device 2 of the present embodiment, when the collision area is wide (when both the front floor cross member 5 and the rear floor cross member 6 are subjected to impact loads) in the event of a vehicle side collision, , the front and rear floor cross members 5, 6 receive an impact load, the floor panel 1 deforms, and the front and rear floor cross members 5, 6 move inward in the vehicle width direction. At this time, since the front and rear floor cross members 5 and 6, which have high rigidity, are less deformed by the impact load, the electric device 2 and the front and rear floor cross members 5 and 6 are fixed via the front and rear fixing portions 21 and 22. It will move to the inside of the vehicle while being held. In addition, the bracket of the inner fixing portion 23 positioned inside the vehicle strokes while being deformed at the bend point 23C.
Therefore, according to the fixing structure of the electric device 2 of this embodiment, the fixation between the electric device 2 and the vehicle body is not broken and is maintained even after the collision while absorbing the impact load applied in the event of a side collision. , the electric device 2 can be prevented from colliding with the surrounding vehicle body structure and being damaged.

In the fixing structure of the electric device 2 of the present embodiment, the distance L1 in the vehicle width direction between the electric device 2 and the center tunnel 3 and the distance L2 in the vehicle width direction between the electric device 2 and the side sill 4 are , the distance L3 between the electrical device 2 and the front floor cross member 5 in the vehicle longitudinal direction and the distance L4 between the electrical device 2 and the rear floor cross member 6 in the vehicle longitudinal direction. Moreover, seat brackets 7 and 8 are fixed to the front floor cross member 5 and the rear floor cross member 6, respectively. and the side sill 4, and adjacent to the front and rear fixed portions 21, 22.
Therefore, in the fixing structure of the electric device 2 of the present embodiment, the movement distance of the electric device 2 in the vehicle width direction is ensured in the event of a side collision, and the seat brackets 7 and 8 secure the front floor cross member 5 and the rear floor cross member 5 . Since the floor cross member 6 is reinforced, deformation of the electric device 2 outside the vehicle relative to the front and rear fixing portions 21 and 22 can be suppressed in the event of a side collision, and the front floor cross member 5 and the rear floor cross member are prevented from deforming. As with the displacement of 6, the electrical device 2 can be reliably moved.

Furthermore, in the fixing structure of the electrical device 2 of the present embodiment, the electrical device 2 has an electrical device body 2A and a housing case 2B that covers the periphery of the electrical device body 2A. The gaps c1 and c2 are provided between the electrical device main body 2A and the vehicle outer side surface, and the gap c1 with respect to the vehicle outer side surface is larger than the gap c2 with respect to the surfaces other than the vehicle outer side surface. Engagement portions 24 and 25 that engage with the vehicle front and rear surfaces of the electrical device main body 2A are provided on the vehicle front and rear surfaces of the housing case 2B.
Therefore, in the fixing structure of the electric device 2 of the present embodiment, the housing case 2B functions as an impact load absorbing member by deforming the housing case 2B at the time of a vehicle side collision, so that the impact to the electric device main body 2A is reduced and the electric device main body 2A is secured. damage can be reduced. Moreover, in the case where an impact load is locally input to the side of the vehicle as in the case of a pole side collision, the impact load is absorbed in the space between the housing case 2B located outside the electric device main body 2A and the inner side is fixed. By deforming the bracket of the portion 23, the shock load to the electric device main body 2A is absorbed and the stroke is ensured, so that the electric device main body 2A can be prevented from being damaged.

In the fixing structure of the electric device 2 of the present embodiment, the floor panels 1 positioned on the left and right sides of the center tunnel 3 in the vehicle width direction are provided with closed cross-sectional portions 13 along the vehicle front-rear direction. A bracket that constitutes the inner fixing portion 23 is connected and fixed to the closed section portion 13 .
Therefore, in the fixing structure of the electric device 2 of the present embodiment, the deformation of the portion of the vehicle body side mounting point 23A of the inner fixing portion 23 due to the impact load input from the side of the vehicle is reduced. It can be reliably deformed and can effectively absorb the impact load from the side of the vehicle.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes are possible based on the technical idea of the present invention.

For example, in the fixing structure of the above-described embodiment, the outer end of the housing case 2B is extended toward the side of the vehicle in order to increase the clearance c1 with respect to the vehicle outer side surface of the electric device main body 2A. Instead of the extended portion of 2B, a member that undergoes impact deformation may be provided on the vehicle outer surface of the electrical device main body 2A or the like.

1 floor panel 2 electrical device 2a outer edge 2b bottom 3 center tunnel 4 side sill 5 front floor cross member 6 rear floor cross member 7, 8 seat bracket 9 tunnel side member 11 floor side member 13 closed section 21 front fixing 22 rear Side fixing part 23 Inner fixing part 23A Vehicle body side attachment point 23B Electric device side attachment point 23C Bending point 24 Front side locking part 25 Rear side locking part c1 Gap (second gap)
c2 gap (first gap)
R area S space

Claims (11)

an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion that is fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
A closed cross section is provided inside the vehicle from the electrical device,
A fixing structure for an electric device , wherein the floor fixing portion is connected to the closed section portion . an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
an electrical device body;
a housing case that surrounds the electrical device main body,
A first gap is provided between the vehicle inner surface of the electrical device main body and the housing case,
A second gap is provided between the vehicle outer surface of the electrical device main body and the housing case,
The fixing structure of an electric device , wherein the second gap is set larger than the first gap . 3. The fixing structure for an electric device according to claim 2 , wherein said housing case has an engaging portion for engaging with a vehicle front and rear surface of said electric device main body. an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
an electrical device body;
a housing case that surrounds the electrical device main body,
A first gap is provided between the vehicle inner side surface of the electrical device main body and the housing case,
A fixing structure for an electric device, wherein the housing case has an engaging portion that engages with a vehicle front and rear surface of the electric device main body . an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
The fixing structure has a floor side member that extends in the vehicle front-rear direction and is joined to the lower surface of the floor panel,
The floor fixing portion is fixed to the floor panel inside the vehicle from the floor side member ,
The electrical device is arranged across the floor side member in the vehicle width direction,
The floor cross member fixing portion is arranged outside the floor side member in the vehicle width direction,
The fixing structure of an electric device, wherein the floor fixing portion is arranged inside the floor side member in the vehicle width direction . an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
The fixing structure has a floor side member that extends in the vehicle front-rear direction and is joined to the lower surface of the floor panel,
The floor fixing portion is fixed to the floor panel inside the vehicle from the floor side member,
A closed cross section is provided inside the vehicle from the floor side member,
A fixing structure for an electric device, wherein the floor fixing portion is connected to the closed section portion. an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
The fixed structure has a seat bracket that is fixed to the floor cross member and supports a seat,
A fixing structure for an electric device, wherein the electric device is connected to the floor cross member on the inner side of the vehicle than the seat bracket. an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
The fixed structure is
a side sill extending in the longitudinal direction of the vehicle;
a center tunnel extending in the longitudinal direction of the vehicle;
The electric device is arranged between the side sill and the center tunnel in the vehicle width direction,
The distance in the vehicle width direction between the electrical device and the center tunnel and the distance in the vehicle width direction between the electrical device and the side sill are the distances in the vehicle longitudinal direction between the electrical device and the floor cross member. A fixing structure for an electrical device, characterized in that it is set larger than the distance. an electrical device provided on a floor panel in the passenger compartment;
a floor cross member provided on the floor panel and extending in the width direction of the vehicle;
The electrical device comprises:
a floor cross member fixing portion connected to the floor cross member;
a floor fixing portion fixed to the floor panel at a vehicle inner side of the electric device relative to the floor cross member fixing portion;
The floor fixing portion has a plurality of bending points formed between a floor panel side attachment point and an electrical device side attachment point attached to the floor panel side,
A fixing structure for an electrical device , wherein a space is provided between the bottom surface of the electrical device and the floor panel. The electric device according to any one of claims 1 to 9, wherein the electric device is arranged under the seat and between a side sill extending in the longitudinal direction of the vehicle and a center tunnel. fixed structure. 11. The structure for fixing an electric device according to claim 10, wherein the floor cross member is provided on each of the vehicle front side and the vehicle rear side of the electric device.

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