JP2007050774A - Battery support structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery support structure capable of securing sufficient support rigidity and capable of arranging a battery in a wheel house inside the vehicle cross section. <P>SOLUTION: This battery support structure for a vehicle is provided with a frame extended in the longitudinal direction of the vehicle, a wheel house member arranged outside the frame in the vehicle cross direction and having a fixing part for fixing an upper part of a suspension device for suspending wheels to structure a wheel house for housing the wheels, and a battery support bracket arranged on the frame and having a part projecting inside the frame in the vehicle cross section. A lower part of the the wheel house member passes through the frame from an outside part onto the inside part in the vehicle cross direction to form an extension part extended inward in the vehicle cross direction, and the battery support bracket is overlapped with the extension part under the extension part in an area riding over the inside part of the frame in the vehicle cross section. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a support structure for a battery mounted on a vehicle.

  Since the battery mounted on the vehicle requires regular maintenance, it is disposed at a position where maintenance can be performed relatively easily, such as an engine room. As a conventional battery placement position, for example, it has been proposed to place a battery on top of a wheel house (Patent Document 1).

JP 2002-220013 A

  However, when the battery is disposed on the upper part of the wheel house, there is a problem that the upper end of the battery becomes higher than the wheel house and the center of gravity becomes higher. Furthermore, there is a problem that it is necessary to set the bonnet height high, and it is difficult to adopt it in terms of appearance design particularly in a sports type vehicle or the like.

  In order to solve such a problem, it is conceivable to dispose the battery inside the wheel house in the vehicle width direction. At this position, a heavy battery can be placed at a lower position (lowering the center of gravity), and it is possible to set an appropriate weight distribution for the axle and meet the collision requirements. However, in this case, since the battery protrudes inward in the vehicle width direction from the side frame, it becomes a cantilever support state, and it becomes difficult to ensure the support rigidity of the battery.

  Accordingly, an object of the present invention is to provide a support structure that secures sufficient support rigidity and enables the battery to be disposed inward in the vehicle width direction of the wheel house.

  According to the present invention, the frame has a frame extending in the vehicle front-rear direction, and a fixing portion that is arranged on the outer side in the vehicle width direction of the frame and that fixes the upper part of the suspension device that suspends the wheel. In the battery support structure of a vehicle, comprising: a wheel house member constituting a wheel house; and a battery support bracket disposed on the frame and having a portion protruding inward in the vehicle width direction from the frame. The lower part of the house member forms an extending portion that extends from the outer side in the vehicle width direction of the frame to the inner side in the vehicle width direction, and extends inward in the vehicle width direction. There is provided a battery support structure for a vehicle which is overlapped with the extending portion below the extending portion in a region straddling the inner side portion of the frame in the vehicle width direction.

  In the battery support structure of the present invention, since the battery support bracket is overlapped with the wheel house member, the load due to the weight of the battery can be transmitted and distributed not only to the frame but also to the wheel house, and the support rigidity is increased. It is done. In particular, since the polymerization is performed over a region across the inner part of the frame in the vehicle width direction, when a load due to the weight of the battery acts, the principle of the lever with the upper end of the inner part as a fulcrum, A load for lifting the wheel house member acts on the wheel house member, and the load is transmitted / distributed not only to the frame but also to the wheel house 5 to enhance the support rigidity of the battery.

  Further, when a load is input from the suspension device to the fixed portion, a load that causes the wheel house member to fall inward in the vehicle width direction acts, the extension portion is pushed downward, and the frame Due to the lever principle using the upper end of the inner side as a fulcrum, a load for pushing up the battery acts on the inner side in the vehicle width direction of the battery support bracket, and load transmission / distribution is possible.

  In the present invention, the wheel house member may employ a configuration in which a portion between the fixed portion and the extending portion extends outward in the vehicle width direction downward. According to this configuration, when an inward falling load is generated in the wheel house member, the wheel house member can easily push down the extension portion, so that the load transmission / dispersion effect can be enhanced.

  Further, in the present invention, it further includes a gusset member disposed inward in the vehicle width direction of the wheel house member, and the gusset member includes an upper portion of a portion between the fixed portion and the extension portion. In the extended portion, a configuration may be adopted in which a portion that is located on the outer side in the vehicle width direction with respect to the inner portion of the frame and overlapped with the battery support bracket is employed. According to this configuration, the wheel house member is prevented from falling more than necessary, and when a load is input from the suspension device to the fixed portion, the gusset member also moves the extending portion downward. Due to the principle of the lever with the upper end of the inner part of the frame as a fulcrum, a load for pushing up the battery acts on the inner part of the battery support bracket in the vehicle width direction, and load transmission / distribution can be performed.

  Moreover, in this invention, the structure by which the gravity center of the battery supported by the said battery support bracket is set inside the vehicle width direction rather than the said inner side part of the said flame | frame can be employ | adopted. The present invention having high support rigidity is most effective in such a configuration.

  In the present invention, a battery tray on which a battery is placed is further disposed on the battery support bracket, and a fastening portion for overlapping the battery support bracket and the extension portion is the frame. The battery tray is provided between the inner portion and the outer portion, and the battery tray can be fastened together with the battery support bracket and the extending portion by the fastening portion. According to this structure, workability | operativity can be improved by using the said fastening part also as a fastening part of the said battery tray.

  As described above, according to the present invention, it is possible to provide a support structure that secures sufficient support rigidity and enables the battery to be disposed inward in the vehicle width direction of the wheel house.

  FIG. 1 is a plan view of a vehicle body structure 100 of a vehicle that employs a battery support structure A according to an embodiment of the present invention. The vehicle body structure 100 is a vehicle body structure that constitutes an engine room formed at the front portion of the vehicle, and includes a dash panel 1 that partitions the engine room and the passenger compartment, and a 1 that extends in the vehicle front-rear direction and is separated in the vehicle width direction. A pair of front side frames 2 and a radiator support member 3 that supports the radiator are provided. An apron member 4 is disposed above each front side frame 2, and a panel constituting a side wall from the apron member 4 to the front side frame 2 swells to the engine room side and accommodates left and right front wheels. A wheel house 5 is formed.

  Each wheel house 5 is disposed on the outer side in the vehicle width direction of each front side frame 2 and has a fixing portion 51a to which each upper portion of each suspension device (strut) (not shown) that suspends the left and right front wheels is fixed. A house member 51 is provided. Each wheel house member 51 constitutes a part of the wheel house 5 and constitutes left and right strut towers. The dash panel 1 constitutes a panel member that extends in the vehicle width direction on the vehicle compartment side of the strut tower (51). A strut tower bar 10 is provided between the left and right strut towers (51) and between the strut tower (51) and the dash panel 1. The strut tower bar 10 connects the left and right strut towers (51) and connects the left and right strut towers (51) and the dash panel 1 via the reinforcing member 20. FIG. 2 is an exploded perspective view of the strut tower bar 10 and the reinforcing member 20.

  The strut tower bar 10 includes a cross bar member 11 extending in the vehicle width direction and a pair of side bar members 12a and 12b extending from the left and right strut towers (51) to the dash panel 1 (hereinafter collectively referred to as side bar member 12). And). Due to the presence of the crossbar member 11, the displacement of the strut tower (51) in the vehicle width direction is suppressed. Further, due to the presence of the side bar member 12, the displacement of the strut tower (51) in the vehicle front-rear direction is suppressed. That is, since the displacement of the strut tower (51) in both the vehicle width direction and the vehicle front-rear direction can be suppressed, steering stability is improved.

  In the present embodiment, both the crossbar member 11 and the sidebar member 12 are formed of a tubular member, and the crossbar member 11 is linear. The side bar member 12 is bent in the middle and is formed in a “he” shape. Of the side bar member 12, a portion from the bent portion to the end portion on the reinforcing member 20 side extends in a substantially horizontal direction (substantially in the vehicle front-rear direction in a side view), and extends from the bent portion to the end portion on the strut tower (51) side. It extends in a direction that inclines partly forward and downward. Each end on the reinforcing member 20 side is flattened into an oval shape to form a mounting portion with the reinforcing member 20, and two mounting holes are formed respectively. Each end on the side of the strut tower (51) is welded to the connection brackets 13a and 13b, and is bolted to the left and right strut towers (51) via the connection brackets 13a and 13b.

  In the present embodiment, as shown in FIG. 1, the crossbar member 11 is disposed closer to the passenger compartment side (dash panel 1 side) than the strut tower (51) and connects the bent portions of the sidebar members 12. , Arranged on the line connecting the bent portions. The cross bar member 11 and each side bar member 12 are connected to each other by welding them to the connecting brackets 14a and 14b branched into three branches. In FIG. 2, the connecting bracket 14b is shown in a partially cutaway view. The connecting brackets 14a and 14b have a hat shape in which the lower half is opened. The connecting brackets 14a and 14b are attached to and welded to the crossbar member 11 and the sidebar members 12.

  The reinforcing member 20 includes a mounting portion 21 that extends substantially horizontally and two mounting portions 22 that extend substantially vertically. The mounting portion 21 is provided with two sets of two holes 21a for fastening the end portions of the side bar members 12 with bolts. Each mounting portion 22 is provided with two holes 22 a for fastening bolts to the dash panel 1, and is coupled to the dash panel 1 by the mounting portion 22.

  In the present embodiment, the crossbar member 11 is disposed closer to the vehicle compartment side (dash panel 1 side) than the strut tower (51), so that the inside of the wheel house 5 in the vehicle width direction, particularly the strut tower (51). A space for arranging the battery 7 is secured on the inner side (inner side in the vehicle width direction). If it is going to arrange | position the crossbar member 11 on the line | wire which connects between the strut towers (51), it is necessary to make the crossbar member 11 a gate type by front view, and the crossbar member 11 protrudes upwards.

  As a result, a sufficient gap between the bonnet and the crossbar member 11 necessary for protecting the pedestrian during a pedestrian accident cannot be secured, and the degree of freedom of the hood is significantly impaired. Furthermore, the crossbar member 11 becomes an obstacle during maintenance of the battery 7 or the like. In the present embodiment, the battery 7 is disposed on the inner side of the strut tower (51) without causing such a problem by disposing the crossbar member 11 closer to the vehicle compartment side than the strut tower (51). can do. Hereinafter, the configuration of the battery support structure A that supports the battery 7 will be described. Although only the battery support structure A on the right wheel side will be described here, the battery support structure A on the left wheel side is the same.

  3A is a perspective view of the battery support structure A, FIG. 3B is a cross-sectional view taken along line XX in FIG. 3A, and FIG. 4 is an exploded perspective view of the battery support structure A. The battery support structure A includes a front side frame 2, a wheel house member 51, and a battery support having a protruding portion 52 a ′ disposed on the front side frame 2 and protruding inward in the vehicle width direction from the front side frame 2. A bracket 52.

  The lower portion of the wheel house member 51 forms an extending portion 51b that extends from the outer side 2a side in the vehicle width direction of the front side frame 2 over the inner side portion 2b in the vehicle width direction and extends inward in the vehicle width direction. is doing. In the case of the present embodiment, the wheel house member 51 has a portion 51c between the fixed portion 51a and the extending portion 51b extending obliquely outward in the vehicle width direction. Two mounting holes 51b 'are formed in the extending portion 51b, and a shaft portion of a bolt 61a to be welded to the back surface protrudes from the upper portion of the portion 51c. Furthermore, a suspension bolt 51d is attached to the extending portion 51b. The mounting hole 51b 'is located between the inner portion 2b and the outer portion 2a of the front side frame 2 when viewed in the vehicle width direction. A portion of the extending portion 51b located outside the vehicle width direction is coupled to the outer portion 2a of the front side frame 2.

  The battery support bracket 52 includes an upper plate portion 52a that is continuous with the protruding portion 52a ′ and forms the protruding portion 52a ′. A certain region of the upper plate portion 52a on the outer side in the vehicle width direction is the wheel house member 51. And the extended portion 51b. As shown in FIG. 3 (b), the upper plate portion 52a and the extending portion 51b are overlapped over a region straddling the inner side portion 2b of the front side frame 2 in the vehicle width direction. The upper plate portion 52a is superposed on the lower surface of the extending portion 51b, and is sandwiched between the extending portion 51b and the flange portion at the upper end of the inner portion 2b.

  Two mounting holes 52b are provided on the outer side in the vehicle width direction of the upper plate portion 52a, and two mounting holes 52c are provided on the inner side in the vehicle width direction. Among these, the mounting hole 52b overlaps with the mounting hole 51b 'of the wheel house member 51 and is fastened together by a common bolt 62a and nut 62b as shown in FIG. The nut 62b is welded to the lower surface of the upper plate portion 52a. The extension part 51b and the upper plate part 52a are superposed by the joint fastening with the bolt 62a and the nut 62b.

  Next, in the battery support structure A of the present embodiment, a gusset member 53 is further disposed on the inside of the wheel house member 51 in the vehicle width direction. The gusset member 53 is overlapped with the battery support bracket 52 at an upper portion of the portion 51c of the wheel house member 51 and an extension portion 51b, which is an outer portion in the vehicle width direction than the inner side portion 2b of the front side frame. It is comprised so that the site | part which exists may be tied. Two mounting holes 53a are provided in the upper portion of the gusset member 53. Bolts 61a are inserted into the mounting holes 53a, and nuts 61b are screwed into the bolts 61a to be fastened. Further, two attachment holes 53b are provided in the lower portion of the gusset member 53, and these attachment holes 53b are overlapped with the attachment holes 51b 'of the wheel house member 51 and the attachment holes 52b of the upper plate portion 52a as shown in FIG. As shown in b), they are fastened together by a common bolt 62a and nut 62b.

  In the present embodiment, a battery tray 54 on which the battery 7 is placed is further disposed on the upper plate portion 52 a of the battery support bracket 52. At the bottom of the battery tray 54, two attachment holes 54b are provided on the outer side in the vehicle width direction, and two attachment holes 54c are provided on the inner side in the vehicle width direction. Among these, the mounting hole 54b is overlapped with the mounting hole 51b ′ of the wheel house member 51, the mounting hole 52b of the upper plate portion 52a, and the mounting hole 53b of the gusset member 53, and as shown in FIG. 62a and nut 62b are tightened together. The mounting hole 54c overlaps with the mounting hole 52c of the battery support bracket 52 and is fastened together by a common bolt 63a and nut 63b as shown in FIG. As shown in FIG. 3B, an insole 54a is disposed on the bottom of the battery tray 54 (not shown in FIGS. 3A and 4).

  In the present embodiment, the center of gravity of the battery 7 placed on the battery tray 54 and supported by the battery support bracket 52 is set inward in the vehicle width direction relative to the inner portion 2 b of the front side frame 2. Yes. In FIG. 3B, a line L <b> 1 indicates a line that passes through the center of gravity of the battery 7.

  Next, the operation of the battery support structure A having such a configuration will be described with reference to FIG. When the battery 7 is disposed in the vehicle width direction inner side of the wheel house 5, in particular, on the inner side of the strut tower (51) as in this embodiment, the battery 7 is connected to the front side frame as shown in FIG. Since it protrudes inward in the vehicle width direction from 2, it becomes a cantilever support state, and securing the support rigidity of the battery 7 becomes a problem.

  In this respect, in this embodiment, since the battery support bracket 52 is overlapped with the wheel house member 51, the load due to the weight of the battery 7 can be transmitted and distributed not only to the front side frame 2 but also to the wheel house 5, and the support rigidity. Is increased. Specifically, since the superposition of the upper plate portion 52a and the extension portion 51b is performed over a region straddling the inner side portion 2b of the front side frame 2 in the vehicle width direction, it is indicated by an arrow a in FIG. As shown, when a downward load is applied to the battery support bracket 52 due to the weight of the battery 7, this is applied to the wheel house member 51 by the lever principle with the upper end P of the inner side portion 2 b of the front side frame 2 as a fulcrum. The load which lifts up acts. Thus, the load is transmitted / distributed to the wheel house 5 and the support rigidity of the battery 7 is increased.

  On the other hand, as shown by an arrow b in FIG. 3B, when a load is input from a suspension device (not shown) to the fixing portion 51a, the wheel house member 51 is moved inward in the vehicle width direction as shown by an arrow c. The falling load acts, and the extending portion 51b is pushed downward as indicated by the arrow d. Since the superposition of the upper plate portion 52a and the extension portion 51b is performed over a region straddling the inner side portion 2b of the front side frame 2 in the vehicle width direction, the upper end P of the inner side portion 2b of the front side frame 2 is a fulcrum. Due to the lever principle described above, a load (arrow d) for pushing up the battery 7 acts on the inner part of the battery support bracket 52 in the vehicle width direction, and load transmission / distribution can be performed.

  In particular, since the input from the suspension system becomes large when the vehicle sinks, the movement of the battery 7 to be displaced downward due to inertia can be suppressed by the principle of the lever with the upper end P as a fulcrum. Further, in the present embodiment, since the portion 51c extends obliquely outward in the vehicle width direction downward, the wheel house member 51 extends when the inward load is generated in the wheel house member 51. Since it becomes easy to push down 51b, the load transmission / dispersion effect is enhanced.

  In the present embodiment, the provision of the gusset member 53 prevents the wheel house member 51 from falling excessively more than necessary. Further, the gusset member 53 is located on the upper part of the portion 51c of the wheel house member 51 and the extended portion 51b and is located on the outer side in the vehicle width direction from the inner side portion 2b of the front side frame and overlaps with the battery support bracket 52. Therefore, when a load is input from a suspension device (not shown) to the fixing portion 51a, the gusset member 53 also pushes the extension portion 51b downward, and the inner portion Due to the lever principle using the upper end P of 2b as a fulcrum, a load that pushes up the battery 7 acts on the inner side in the vehicle width direction of the battery support bracket 52, and load transmission / distribution is possible.

  In the present embodiment, the number of superposed members around the inner side of the wheel house member 51 increases as it goes outward in the vehicle width direction. That is, in FIG. 3B, two sheets of the battery tray 54 and the battery support bracket 52 are overlapped at the inner end in the vehicle width direction. Next, in the vicinity of the line L1, the extending portion 51b of the wheel house member 51 is polymerized to form three sheets. Further, in the vicinity of the bolt 62a, the gusset member 53 is superposed to form a superposition of four sheets. Thus, the number of superposed sheets increases as going outward in the vehicle width direction, and the rigidity around the wheel house member 51 that bears input from the suspension device can be increased.

  In the present embodiment, fastening portions (bolts 62a and nuts 62b) for overlapping the battery support bracket 52 and the extending portion 51b are provided between the inner portion 2b and the outer portion 2a of the front side frame 2. The battery tray 54 is fastened together with the battery support bracket 52 and the extension 51b by the fastening portion. Since the upper part of the front side frame 2 is closed by the extending part 51b and it becomes difficult to access the inside thereof, when the battery tray 54 is retrofitted, the workability deteriorates. The workability can be improved by using the fastening portion for overlapping the protruding portion 51b also as the fastening portion of the battery tray 54.

It is a top view of the vehicle body structure 100 of the vehicle which employ | adopted the battery support structure A which concerns on one Embodiment of this invention. 3 is an exploded perspective view of the strut tower bar 10 and the reinforcing member 20. FIG. (A) is a perspective view of the battery support structure A, (b) is a sectional view taken along line XX in FIG. 3 (a). 4 is an exploded perspective view of a battery support structure A. FIG.

Explanation of symbols

A battery support structure 2 front side frame 2a outer part 2b inner part 5 wheel house 7 battery 51 wheel house member 51a fixing part 51b extension part 52 battery support bracket 53 gusset member 54 battery tray 62a bolt (fastening part)
62b Nut (fastening part)
100 body structure

Claims (5)

A frame extending in the longitudinal direction of the vehicle,
A wheel house member that is disposed outside the frame in the vehicle width direction and has a fixing portion to which an upper portion of a suspension device for suspending a wheel is fixed;
A battery support bracket disposed on the frame and having a portion protruding inward in the vehicle width direction from the frame;
In the vehicle battery support structure with
The lower part of the wheel house member passes from the outer side in the vehicle width direction of the frame on the inner side in the vehicle width direction, and forms an extending portion that extends inward in the vehicle width direction,
The battery support structure for a vehicle, wherein the battery support bracket is overlapped with the extension portion under the extension portion in a region straddling the inner side portion of the frame in the vehicle width direction. The wheel house member is
The battery support structure for a vehicle according to claim 1, wherein a portion between the fixed portion and the extending portion extends outward in the vehicle width direction downward. Furthermore, a gusset member disposed on the inner side in the vehicle width direction of the wheel house member,
The gusset member is
The upper part of the part between the fixed part and the extension part, and the part of the extension part that is on the outer side in the vehicle width direction than the inner side part of the frame and is superposed on the battery support bracket. The battery support structure for a vehicle according to claim 2, wherein the battery support structure is connected to a portion of the vehicle.   4. The vehicle battery support according to claim 1, wherein the center of gravity of the battery supported by the battery support bracket is set inward in the vehicle width direction with respect to the inner side portion of the frame. 5. Construction. A battery tray on which the battery is placed is further disposed on the battery support bracket,
A fastening part for overlapping the battery support bracket and the extension part is provided between the inner part and the outer part of the frame,
The battery support structure for a vehicle according to any one of claims 1 to 4, wherein the battery tray is fastened together with the battery support bracket and the extension part by the fastening part.

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