JP2009035215A - Battery mounting structure for motor vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery mounting structure for a motor vehicle capable of preventing collision against vehicle equipment at a rear side by allowing a battery to turn in a plan view upon head-on collision of the vehicle. <P>SOLUTION: In the battery mounting structure for the motor vehicle, a vehicle part (14) is arranged adjacent to a rear side of the battery (20) and a suspension tower (10) is formed at an outer side in a vehicle width direction than the battery. The structure has a battery receiving part (24) for placing the battery; and a battery clamp (34) for fixing the battery so as to downwardly press an upper surface of the battery. An upper part of an outer side in a vehicle width direction of the battery clamp is connected to an upper surface part of the suspension tower. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an automobile battery mounting structure, and more particularly, to an automobile battery mounting structure in which vehicle parts are arranged adjacent to the rear of a battery and a suspension tower is formed outward in the vehicle width direction from the battery.

  Patent Document 1 discloses a battery mounting structure in which a battery tray on which a battery is mounted is attached to a vehicle body side, one end of a battery mounting bar is attached to an inner end of the battery, and the other end is connected to a suspension tower. It is disclosed. According to the battery having such a structure, it is considered that the battery mounting bar can prevent the battery from falling down in the vehicle width direction when the vehicle collides.

Actual Kaihei 02-074262

  However, conventionally, including the device described in Patent Document 1 described above, how to avoid a collision between the battery and another auxiliary device using the battery mounting structure in the engine room at the time of the collision of the vehicle. It was not considered. Here, as a general battery arrangement, an arrangement of the battery 100 as shown in FIG. 12 can be considered. That is, the clamp 102 extends in the vehicle width direction at a substantially middle portion of the battery 100 in the longitudinal direction of the vehicle body, and a dash lower panel 104 and a master back 106 and a master cylinder 108 attached to the dash lower panel 104 are disposed on the rear side. ing. In recent years, in particular, in order to efficiently use the space in the engine room, the auxiliary machines are often arranged at positions adjacent to each other as shown in FIG.

  Then, the present inventors have displaced the battery 100 arranged as shown in FIG. 12 from the position shown in FIG. 12 to the position shown in FIG. It was made clear by analysis. That is, at the time of collision, as shown in FIG. 13, the battery 100 collides with the master cylinder 104 from the front, and pushes the master cylinder 104 and the dash lower panel 106 backward. As a result, the space at the foot of the occupant may be reduced, or the driver's foot that is stepping on the brake may be impacted. In addition to the master cylinder, the same thing may occur with other auxiliary equipment such as air-conditioning equipment.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and it is possible to prevent a collision with a rear vehicle device by rotating the battery in a plan view when the vehicle collides. An object of the present invention is to provide a battery mounting structure for an automobile.

  In order to achieve the above object, the present invention provides an automotive battery mounting structure in which vehicle parts are arranged adjacent to the rear of a battery and a suspension tower is formed outward in the vehicle width direction from the battery. It has a battery receiving part to be placed and a battery clamp for fixing the battery so that the upper surface of the battery is pressed downward, and the upper part of the battery clamp in the vehicle width direction is connected to the upper part of the suspension tower. It is characterized by being.

  In the present invention configured as described above, since the upper part of the battery is fixed to the suspension tower by the battery clamp, it is possible to prevent the battery from falling down inwardly in the vehicle width direction. In addition, when the vehicle collides forward and a collision force is applied to the battery from the front, the battery is forced to rotate around the connection part of the battery clamp to the suspension tower in plan view. Thus, the rear end side of the battery rotates toward the outside in the vehicle width direction. As a result, it is possible to prevent collision with a vehicle component such as a master cylinder, which is disposed adjacent to the rear of the battery. Accordingly, it is possible to prevent the vehicle parts from moving backward and causing the dash lower panel to retreat, for example, to narrow the foot space of the occupant at the time of the front collision.

In the present invention, it is preferable that a mounting bracket extending to a position adjacent to an outer portion in the vehicle width direction of the battery is attached to an upper surface portion of the suspension tower, and an upper portion in the vehicle width direction of the battery clamp is attached to the upper surface portion of the suspension tower. It is attached to the upper surface of the suspension tower via a bracket.
In the present invention configured as described above, the battery clamp can be easily rotated around the connecting portion with the mounting bracket. As a result, the rotation center of the battery clamp is closer to the battery, and the rotation angle is increased even if the battery is slightly moved in the longitudinal direction of the vehicle body. Accordingly, it is possible to prevent the rear end portion of the battery from turning outward in the vehicle width direction in a plan view and colliding with the vehicle component.

In the present invention, the mounting bracket is preferably attached to a front portion of the upper surface portion of the suspension tower in the front-rear direction of the vehicle body.
In the present invention configured as described above, the battery can be arranged at a more forward position while minimizing the front-rear length of the mounting bracket.

In the present invention, preferably, the battery clamp is provided on the upper surface of the battery so as to extend in the vehicle width direction, and at least both side portions thereof extend so as to be located on both side portions of the battery, and the battery clamp. A pair of connecting members that connect the both sides of the pressing member in the vehicle width direction and the battery receiving portion at a substantially intermediate position in the vehicle longitudinal direction, and the holding member extends rearward in the vehicle longitudinal direction than the connecting member and is suspended. It can be attached to the top surface of the tower.
In the present invention configured as described above, the battery is more securely fixed by the pressing member and the connecting member, and the pressing member extends rearward in the vehicle body front-rear direction than the connecting member and is attached to the upper surface portion of the suspension tower. Therefore, the battery can be arranged at a more forward position.

In the present invention, it is preferable that the pressing member includes a bridging portion that bridges the pair of connecting members, and an extending portion that extends from the bridging portion to the rear of the battery and outward in the vehicle width direction. Is attached to the upper surface of the suspension tower.
In the present invention configured as above, the battery can be attached to the suspension tower while rotating the battery at the time of a front collision with a simpler structure by the pressing member having the bridging portion and the extending portion.

In the present invention, preferably, the battery clamp is bent downward at the inner end in the vehicle width direction of the extending portion and extends along the side surface of the battery, and downward at the rear end of the extending portion. And a rear wall portion that is bent and extends along the rear surface of the battery.
In the present invention configured as described above, the battery is effectively supported laterally and rearward by the side wall portion and the rear wall portion.

In the present invention, preferably, the vehicle component is a brake device including a brake booster attached to a front portion of the dash panel and a master cylinder extending forward from the front portion of the brake booster.
In the present invention configured as described above, it is possible to prevent the battery from colliding with the master cylinder from the front and pushing the master cylinder and the dash lower panel backward. As a result, it is possible to prevent the passenger's foot space from being narrowed and the driver's foot stepping on the brake from being shocked.

  According to the automobile battery mounting structure of the present invention, the battery can be rotated in a plan view when the vehicle collides, thereby preventing a collision with the rear vehicle equipment.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, referring to FIG. 1, a peripheral structure of a battery device to which a vehicle battery mounting structure according to an embodiment of the present invention is applied will be described. FIG. 1 is a perspective view showing a battery device and its peripheral structure according to an embodiment of the present invention.
In the engine room 1 of the automobile, a pair of left and right front side frames 2 extending in the longitudinal direction of the vehicle body, a dash upper panel 4, a dash lower panel 6 separating the vehicle compartment and the engine room 1, and a vehicle width direction of the front side frame 2 An apron panel 8 on the outer side and a suspension tower 10 on the rear side of the apron panel 8 on the outer side in the vehicle width direction of the front side frame 2 are formed.

  A master back (brake booster) 12 that is a part of the brake device and a master cylinder 14 that protrudes forward from the center are attached to the front portion of the dash lower panel 6. A battery device 20 is provided at a position adjacent to the rear of the master cylinder 14 and slightly offset outward in the vehicle width direction.

  Next, the overall configuration of the automobile battery mounting structure according to the embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a perspective view showing a battery device to which a vehicle battery mounting structure according to an embodiment of the present invention is applied. FIG. 3 is a perspective view showing a vehicle body side bracket of the battery mounting structure according to the embodiment of the present invention. 4 is a perspective view showing a vehicle body side bracket and a battery mounting bracket of the battery mounting structure according to the embodiment of the present invention, and FIG. 5 is a vehicle body side bracket and battery mounting of the battery mounting structure according to the embodiment of the present invention. It is a perspective view which shows a bracket, a clamp mechanism, and a clamp attachment bracket.

  As shown in FIG. 2, the battery device 20 according to the embodiment of the present invention has, as its mounting structure, a vehicle body side bracket 22 and a battery mounting bracket 24 attached to the vehicle body side bracket and functioning as a battery receiving portion. The battery case 26, the battery main body 28 accommodated in the battery case 26, a clamp mechanism 30 for fixing the battery main body 28, and a clamp mounting bracket (suspension tower bracket) attached to the upper surface of the suspension tower 10 32.

Next, as shown in FIG. 3, the vehicle body side bracket 22 is fixed to the upper surface of the front side frame 2 by bolts 23. The vehicle body side bracket 22 also serves as an engine mount bracket.
Next, as shown in FIG. 4, the battery mounting bracket 24 is fixed to the upper surface of the vehicle body side bracket 22 by three bolts 29 (see FIG. 7) and nuts 29b. The battery mounting bracket 24 has three bolt holes 27 formed on the upper surface thereof, and the battery case 26 is bolted and fixed to the bolt holes 27. The battery mounting bracket 24 protrudes inward in the vehicle width direction from the vehicle body side bracket 22, and the battery body fixed to the upper surface of the battery mounting bracket 24 is supported like a cantilever.

Next, as shown in FIG. 5, the clamp mechanism 30 includes an upper clamp 34 as a pressing member that acts to hold the battery body 28 from above, both sides of the upper clamp 34 in the vehicle width direction, and battery attachment. It comprises a lower clamp (connecting member) 36 that connects the bracket 24. The lower clamp 36 extends inward of the battery case 26 (see FIG. 9).
A clamp mounting bracket 32 is fixed to the upper surface portion of the suspension tower 10 by a welded portion 32a. The inner end portion in the vehicle width direction of the clamp mounting bracket 32 is a portion indicated by reference numeral 60, and is connected to the outer end portion in the vehicle width direction of the upper clamp 34 by a bolt 35 a and a nut 35 b.

  Next, referring to FIGS. 2 and 6 to 10, a battery mounting structure for an automobile according to an embodiment of the present invention will be described. 6 is a plan view showing a battery device to which a battery mounting structure for an automobile according to an embodiment of the present invention is applied. FIG. 7 is a cross-sectional structure taken along line VII-VII in FIG. 8 is a cross-sectional structure seen along line VIII-VIII in FIG. 6, FIG. 9 is a cross-sectional structure seen along line IX-IX in FIG. 6, and FIG. 10 is a cross-sectional structure taken along line XX in FIG. It is the cross-sectional structure seen along.

First, the mounting structure of the vehicle body side bracket 22, the battery mounting bracket 24, and the battery case 26 will be described with reference to FIGS.
First, as shown in FIG. 7, a bolt 29a is passed through the vehicle body side bracket 22 from below, the battery mounting bracket 24 is tightened with a nut 29b, and the vehicle body side bracket 22 and the battery mounting bracket 24 are mutually connected. It is supposed to be fixed. As shown in FIGS. 8 to 10, a bolt 50a is passed through the battery mounting bracket 24 from the battery case 26 side and fixed to each other by a nut 50b.

Next, the upper clamp 34 will be described. As shown in FIGS. 2 and 6, the upper clamp 34 has a portion extending in the vehicle width direction at a substantially intermediate position in the vehicle body longitudinal direction of the battery main body 28, and both end portions 34 g and 34 h of the portion are connected to the battery main body 28. On both sides.
As shown in FIG. 9, there is a gap between the both ends 34 g and 34 h in the vehicle width direction of the upper clamp 34 and the lower clamp 36 so that a force that presses the battery body 28 acts on the upper clamp 34. Thus, the upper clamp 34 and the lower clamp 36 are fastened by the bolt 37a and the nut 37b.

  As shown in FIGS. 2 and 9, the lower clamp 36 has its both side portions extending in the vertical direction of the vehicle body at a substantially intermediate position in the vehicle body longitudinal direction of the battery body 28, and its bottom portion being bolted to the battery mounting bracket 24. It is connected by 50a. Therefore, by tightening the bolt 37a and the nut 37b, a force is applied to the upper clamp 34 so as to press the upper surface of the battery body 28 downward, and the upper clamp 34 acts as a pressing member that fixes the battery body 28 by the force. is doing.

  As shown in FIGS. 2 and 6, the upper clamp 34 extends so as to cover the battery body 28 at the rear of the vehicle body front-rear direction than the lower clamp 36. More specifically, the upper clamp 34 has a bridging portion 34a for bridging and connecting a pair of left and right lower clamps 36 to each other, and an extension portion extending in a rear region in the vehicle longitudinal direction from the bridging portion 34a. Yes. This extension is roughly divided into three parts. That is, the first extension 34b that extends inward in the vehicle width direction to the inner end of the battery body 28 in the vehicle width direction and the rear end of the battery main body 28 in the vehicle front-rear direction toward the rear in the vehicle body front-rear direction. It has the 2nd extension part 34c extended, and the 3rd extension part 34d extended to the vehicle width direction inner side edge part of the clamp attachment bracket 32 toward the vehicle width direction outward.

  As shown in FIG. 10, the first extension 34 b of the upper clamp 34 includes a side wall 34 e that is bent downward at the inner end in the vehicle width direction of the battery body 28 and extends along the side surface of the battery body 28. The battery body 28 is supported by the side wall 34e from the inner side in the vehicle width direction. A side wall 34e that is bent downward and extends along the side surface of the battery main body 28 is also formed at the outer end in the vehicle width direction of the battery main body 28 that is opposite to the side wall 34e in the vehicle width direction. The battery body 28 is supported by the side wall portion 34e from the outer side in the vehicle width direction.

  Next, as shown in FIG. 7, the second extension 34 c of the upper clamp 34 is bent downward at the rear end of the battery body 28 in the longitudinal direction of the vehicle body and extends along the side surface of the battery body 28. 34f is provided, and the battery body 28 is supported from the rear side in the front-rear direction of the vehicle body by the rear wall portion 34f.

Next, a structure for attaching the upper clamp 34 to the upper surface portion of the suspension tower 10 will be described.
As shown in FIGS. 2 and 6, the clamp mounting bracket 32 is fixed to the front portion of the suspension tower 10. The clamp mounting bracket 32 extends in the vehicle width direction from the front portion inward in the vehicle width direction to a position adjacent to the outer side surface of the battery case 26 in the vehicle width direction. As shown in FIG. 10, a weld nut 35b is provided below the tip of the clamp mounting bracket 32 extending in this manner, and a third extension 34b of the upper clamp 34 is provided above the tip. It extends. Then, by fastening with a bolt 35a from above the third extension 34b, the tip of the third extension 34b of the upper clamp 34 and the tip of the clamp mounting bracket 32 are connected at the position indicated by reference numeral 60. Has been. In this manner, the upper clamp 34 is attached to the upper surface portion of the suspension tower 10.

Next, the layout of the battery device 20 having the above-described configuration will be described with reference to FIG.
As described above, the upper clamp 34 and the lower clamp 36 are connected to each other at the intermediate portion of the battery main body 28 in the front-rear direction of the vehicle body. Further, the extension portions 34b, 34c, 34d of the upper clamp 34 extend in front of it, and the outer end in the vehicle width direction of the third extension portion 34d is attached to the upper surface portion of the suspension tower 10 and the front side portion. The clamp mounting bracket 32 is connected. Therefore, as shown in FIG. 6, the battery body 28 is fixed adjacent to the suspension tower 10 and is offset from the suspension tower 10 to the rear side. A master cylinder 14 is disposed adjacent to the rear side of the battery case 26.

Next, the function and effect of the embodiment of the present invention will be described.
First, the battery body 28 is attached to the battery mounting bracket 24 so as to be pressed from above by the upper clamp 34. As described above, the battery body fixed to the upper surface of the battery mounting bracket 24 is supported like a cantilever. However, since the upper clamp 34 is connected to the upper surface portion of the suspension tower 10 via the clamp mounting bracket 32, the upper surface portion of the battery case 26 and the battery body 28 are located outward in the vehicle width direction by the upper clamp 34. It is fixed so as to be pulled to the suspension tower 10 side. Therefore, it is possible to prevent the battery body 28 from falling down inwardly in the vehicle width direction.

Further, when the vehicle collides and a collision force is applied to the battery main body 28 from the front, the battery main body 28 tends to rotate around the attachment portion 60 of the upper clamp 34 to the clamp attachment bracket 32 in plan view. Power works. Therefore, the rear end side of the battery main body 28 turns outward in the vehicle width direction in plan view.
Such a state will be described with reference to FIG. 11 based on the result obtained by the simulation by the CAE analysis. That is, at the time of frontal collision of the vehicle, the vehicle is crushed from the front side of the engine room 1, and a large force is applied to each auxiliary machine. Comparing FIG. 6 with FIG. 11, at the time of the front collision, the suspension tower 10 is deformed so as to be slightly tilted in the vehicle width direction, and the clamp mounting bracket 32 attached to the front side of the suspension tower 10 is located in the vehicle width direction. It is turning towards. The upper clamp 34 is rotated outward in the vehicle width direction with some deformation. As a result, the rear end portion of the battery main body 28 is prevented from colliding with the master cylinder 14 by rotating toward the outer side in the vehicle width direction. Therefore, at the time of a frontal collision, the master cylinder 14 moves backward, and the dash lower panel 6 moves backward to prevent the passenger's feet stepping on the brakes and the driver's feet stepping on the brakes from being narrowed. I can do it.

  Next, the upper clamp 34 is connected to the upper surface portion of the suspension tower 10 via the clamp mounting bracket 32. The clamp mounting bracket 32 is fixed to the upper surface and the front portion of the suspension tower 10 by welding. Accordingly, the upper clamp 34 is easy to rotate around the connecting portion (tip portion) 60 with the clamp mounting bracket 32. Thereby, the rotation center of the upper clamp 34 is closer to the battery body 28, and the rotation angle is increased even if the battery body 28 is slightly moved in the longitudinal direction of the vehicle body. Therefore, it is possible to prevent the rear end portion of the battery main body 28 from rotating outward in the vehicle width direction and colliding with the master cylinder 14 more reliably.

Next, the clamp mounting bracket 32 is fixed to the front portion of the suspension tower 10. Accordingly, the battery main body 28 can be arranged at a more forward position while minimizing the front-rear length of the clamp mounting bracket 32.
Next, the clamp mechanism 30 is provided on the upper surface of the battery body 28 so as to extend in the vehicle width direction, and an upper clamp 34 extending so that at least both sides thereof are located on both sides of the battery body 28, and the battery A pair of lower clamps 36 for connecting the both sides of the upper clamp 34 in the vehicle width direction and the battery mounting bracket 24 at a substantially middle position of the main body 28 in the longitudinal direction of the vehicle body are provided. It extends rearward in the front-rear direction and is attached to the upper surface of the suspension tower 10. With such a configuration, the battery main body 28 can be more reliably supported by the battery mounting bracket 24, and the battery main body 28 can be disposed at a more forward position.

Next, the upper clamp 34 includes a bridging portion 34a that bridges the pair of lower clamps 36, and extending portions 34b, 34c, and 34d that extend from the bridging portion to the rear of the battery body 28. The extending portion 34d is a suspension. It is attached to the upper surface of the tower 10. With the upper clamp 34 configured in this manner, the battery body 28 can be rotated and attached to the suspension tower 10 at the time of a front collision.
Next, the upper clamp 34 is bent downward at the vehicle width direction inner end portion or the vehicle width direction outer end portion of the first extension portion 34b and extends along the side surface of the battery body 28; The side wall 34e and the rear wall 34f, which have a rear wall 34f that is bent downward at the rear end of the second extension 34c and extends along the rear surface of the battery main body 28, are effective. Has come to be supported.

  In this embodiment, the battery is prevented from colliding with the master cylinder, but other parts and devices such as air conditioner accessories may be arranged at the master cylinder. The collision can be avoided by the same configuration as in the present embodiment.

1 is a perspective view showing a battery device and its peripheral structure according to an embodiment of the present invention. 1 is a perspective view illustrating a battery device to which a battery mounting structure for an automobile according to an embodiment of the present invention is applied. It is a perspective view which shows the vehicle body side bracket of the battery attachment structure by embodiment of this invention. It is a perspective view which shows the vehicle body side bracket and battery mounting bracket of the battery mounting structure by embodiment of this invention. It is a perspective view which shows the vehicle body side bracket of the battery mounting structure by embodiment of this invention, a battery mounting bracket, a clamp mechanism, and a clamp mounting bracket. 1 is a plan view showing a battery device to which a battery mounting structure for an automobile according to an embodiment of the present invention is applied. FIG. 7 is a cross-sectional structure taken along line VII-VII in FIG. 6. FIG. 8 is a cross-sectional structure seen along line VIII-VIII in FIG. 6. FIG. 7 is a cross-sectional structure taken along line IX-IX in FIG. 6. 7 is a cross-sectional structure taken along line XX in FIG. It is a top view which shows the displacement of the battery at the time of the collision by the battery attachment structure of embodiment of this invention obtained by simulation, and a deformation | transformation of a surrounding structure. It is a top view which shows the attachment structure of the battery by a prior art. It is a top view which shows the displacement and deformation | transformation at the time of the collision of the battery by a prior art.

Explanation of symbols

1 Engine Room 6 Dash Lower Panel 10 Suspension Tower 14 Master Cylinder 20 Battery Device 22 Car Body Side Bracket 24 Battery Mounting Bracket (Battery Receiving Section)
26 Battery Case 28 Battery Body 30 Clamp Mechanism 32 Clamp Mounting Bracket (Mounting Bracket) 32
34 Upper clamp (holding member)
34a Bridge portion 34b First extension portion 34c Second extension portion 34d Third extension portion 34e Side wall portion 34f Rear wall portion 36 Lower clamp (connection member)

Claims (7)

A vehicle battery mounting structure in which vehicle parts are arranged adjacent to the rear of the battery and a suspension tower is formed outward in the vehicle width direction from the battery,
A battery receiver for placing the battery;
A battery clamp for fixing the battery so as to hold down the upper surface of the battery,
An automotive battery mounting structure, wherein an upper portion of the battery clamp in the vehicle width direction is connected to an upper surface of the suspension tower.   A mounting bracket that extends to a position adjacent to an outer portion in the vehicle width direction of the battery is attached to the upper surface portion of the suspension tower, and an upper portion in the vehicle width direction of the battery clamp is connected to the upper portion through the mounting bracket. The automobile battery mounting structure according to claim 1, wherein the battery mounting structure is attached to an upper surface portion of the suspension tower.   The battery mounting structure for an automobile according to claim 1 or 2, wherein the mounting bracket is attached to a front portion of the upper surface portion of the suspension tower in a vehicle longitudinal direction.   The battery clamp is provided on the upper surface of the battery so as to extend in the vehicle width direction, and has a pressing member extending so that at least both sides thereof are located on both sides of the battery, respectively, A pair of connecting members that connect the both sides of the pressing member in the vehicle width direction and the battery receiving portion at an intermediate position, and the pressing member extends rearward in the vehicle body front-rear direction than the connecting member, and the suspension The battery mounting structure for an automobile according to any one of claims 1 to 3, wherein the battery mounting structure is attached to an upper surface portion of the tower.   The pressing member includes a bridging portion that bridges the pair of connecting members, and an extending portion that extends from the bridging portion to the rear of the battery and outward in the vehicle width direction, and the extending portion is an upper surface of the suspension tower. The battery mounting structure for an automobile according to any one of claims 1 to 4, wherein the battery mounting structure is attached to a portion.   The battery clamp is bent downward at an inner end in the vehicle width direction of the extension portion and extends along a side surface of the battery, and is bent downward at a rear end of the extension portion and the battery clamp. The battery mounting structure for an automobile according to claim 5, further comprising a rear wall portion extending along the rear surface.   The automobile according to any one of claims 1 to 6, wherein the vehicle component is a brake device including a brake booster attached to a front portion of a dash panel and a master cylinder extending forward and projecting from a front portion of the brake booster. Battery mounting structure.

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