JP5686038B2 - Vehicle body structure - Google Patents

Description

  The present invention relates to a vehicle body structure of a vehicle such as an automobile, and more particularly to a mounting structure of a lateral rod constituting a rear suspension.

  Conventionally, some vehicles such as automobiles are equipped with a rear suspension having a lateral rod. One end of the lateral rod is connected to a vehicle body frame such as a side member or a cross member via a lateral rod bracket. Since this lateral rod bracket supports one end of the lateral rod, it is preferable that its rigidity is as high as possible. For this reason, generally, the lateral rod bracket (vehicle body side mounting bracket) that supports one end of the lateral rod (lateral link) is integrally fixed to the vehicle frame by, for example, welding (for example, Patent Documents). 1).

  Thereby, since the rigidity of the lateral rod bracket becomes relatively high, the riding comfort of the vehicle is improved.

JP 11-165518 A

  However, since a relatively large load may be input to the lateral rod bracket via the lateral rod, repair may be required depending on, for example, long-term use. For example, some electric vehicles such as an electric vehicle and a hybrid vehicle have a battery unit including a plurality of drive batteries for supplying electric power to a traveling motor attached below the floor. Since this battery unit is quite heavy, for example, if the battery unit is attached to the rear of the vehicle, a larger load may be input to the lateral rod bracket. For this reason, in an electric vehicle, the necessity for repair of a lateral rod bracket becomes high. For example, if the lateral rod bracket is detachably fixed to the vehicle body frame, the repairability of the lateral rod bracket can be improved. However, there is a possibility that the rigidity of the lateral rod bracket is lowered and the ride comfort of the vehicle is deteriorated.

  The arrangement of the lateral rod affects the ride comfort of the vehicle. For this reason, it is preferable to adjust the arrangement of the lateral rods as necessary. However, the adjustment of the arrangement of the lateral rods is not taken into consideration at present.

  The present invention has been made in view of such circumstances, and provides a vehicle body structure for a vehicle that can improve the repairability of the lateral rod bracket and can adjust the arrangement of the lateral rods relatively easily. The purpose is to do.

A first aspect of the present invention that solves the above problems includes a pair of side members extending in the front-rear direction of the vehicle, and a cross member extending in the vehicle width direction of the vehicle and fixed to the pair of side members. A vehicle body structure in which one end of the lateral rod is coupled to the vehicle body frame via a lateral rod bracket, and the lateral rod bracket is integrally fixed to the vehicle body frame; and A mounting member that is detachably fixed to the support member without being fixed to the vehicle body frame and to which one end of the lateral rod is mounted , and further, the mounting member is formed on the upper side with the support member. fastening is detachably fixed by a member, the lower side which is located below the upper side, the car of the vehicle, characterized by holding one end of the lateral rod In the structure.

  In a second aspect of the present invention, the outfitting member has an insertion groove into which the lateral rod is inserted and has an open sectional structure, while the support member has a closed sectional structure. The vehicle body structure of the aspect.

  According to a third aspect of the present invention, in the vehicle body structure of the vehicle according to the first or second aspect, the outfitting member is lower in rigidity than the support member.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the outfitting member is fastened to the support member by a fastening member from a vehicle width direction and a front-rear direction of the vehicle. The vehicle body structure of the aspect.

  In the present invention, it is possible to improve the repairability while suppressing a decrease in rigidity of the lateral rod bracket. In addition, the arrangement of the lateral rods can be adjusted by changing the mounting position of the outfitting member with respect to the support member, and the riding comfort of the vehicle can be improved.

1 is a diagram illustrating a schematic configuration of a vehicle according to an embodiment. It is a figure showing a schematic structure of a rear suspension concerning one embodiment. It is a schematic perspective view which shows the connection part of the lateral rod which concerns on one Embodiment. It is a schematic plan view which shows the connection part of the lateral rod which concerns on one Embodiment. It is a schematic perspective view which shows the outfit member which concerns on one Embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a vehicle 10 according to the present embodiment is an electric vehicle such as an electric vehicle, for example, and includes a vehicle body frame 20 that forms a skeleton below a vehicle body 11 and a battery unit fixed to the vehicle body frame 20. 30 under the floor (vehicle compartment).

  The vehicle body frame 20 includes a pair of side members 21 extending in the front-rear direction of the vehicle 10 and a plurality of (three in the present embodiment) crosses extending in the vehicle width direction (left-right direction) of the vehicle 10. And a member 22. Each cross member 22 is fixed to a predetermined position of the side member 21 by welding. The battery unit 30 is detachably fixed to the vehicle body frame 20 having such a configuration from below.

  The front wheel 40 of the vehicle 10 is supported on the vehicle body 11 by a front suspension (not shown). The rear wheel 41 is supported on the vehicle body 11 by a trailing rear suspension 50 as shown in FIG. The rear suspension 50 is provided with a suspension spring 52, a shock absorber 53, a lateral rod 54, and the like between the vehicle body 11 and the rear axle 51. The lateral rod 54 has a front end portion (one end side) connected to the vehicle body side and a rear end portion connected to the rear axle 51. The pair of trailing arms 55 (55A, 55B) extending in the front-rear direction of the vehicle 10 also has a front end portion (one end side) connected to the vehicle body side and a rear end portion connected to the rear axle 51.

  Here, one end side of the lateral rod 54 constituting the rear suspension 50 is supported by a lateral rod bracket 60 fixed to the vehicle body frame 20 as shown in FIGS. 3 and 4. The lateral rod bracket 60 includes a support member 61 that is integrally fixed to the vehicle body frame 20, and a fitting member 62 that is detachably fixed to the support member 61 and is attached to one end of the lateral rod 54. .

  The support member 61 is arranged along the vehicle width direction so as to face the rearmost cross member 22 (see FIG. 1). In the present embodiment, the support member 61 includes a first extending portion 63 and a second extending portion 64 that extend in different directions from the lower end side. The first extending portion 63 is extended in a substantially vertical direction, and a tip end portion thereof is integrally fixed to the side member 21 by welding or the like. The second extending portion 64 extends in a direction intersecting with the first extending portion 63, and the tip end portion thereof is integrally fixed to the cross member 22 by welding or the like. The shape of the support member 61 is not particularly limited as long as it can be firmly fixed to the body frame 20. The support member 61 preferably has a closed cross-sectional structure. The support member 61 according to the present embodiment is formed by welding two members and has a closed cross-sectional structure. Thereby, the rigidity of support member 61 itself can be improved.

  On the other hand, the outfitting member 62 is detachably fixed to the lower end portion of such a support member 61. The outfitting member 62 has an open cross-sectional structure with the inside of the vehicle 10 opened. That is, as shown in FIG. 5, the outfit member 62 is formed in a substantially U-shaped cross section to define the groove 65. The outfitting member 62 is detachably fixed to the support member 61 by a fastening member 66 such as a bolt in a state where the support member 61 is engaged with the upper side of the groove portion 65. The position where the fitting member 62 is fixed by the fastening member 66 is not particularly limited, but in this embodiment, the wearing member 62 is fixed to the intersecting surface of the support member 61 by the fastening member 66. Specifically, the outfitting member 62 is fastened to the support member 61 by fastening members 66 from the vehicle width direction and the front-rear direction of the vehicle 10. The lower portion of the groove portion 65 functions as an insertion groove into which the lateral rod 54 is inserted, and one end of the lateral rod 54 is inserted in the groove portion (insertion groove) 65 and can be turned up and down by a bolt or the like. Is retained.

  As described above, in the present embodiment, the lateral rod bracket 60 for connecting the lateral rod 54 constituting the rear suspension 50 to the vehicle body frame 20 is constituted by the support member 61 and the mounting member 62.

  Thereby, the repairability can be improved while suppressing a decrease in rigidity of the lateral rod bracket 60.

  For example, the repairability can be improved by detachably fixing the lateral rod bracket formed of one member to the vehicle body frame. However, since the rigidity of the lateral rod bracket is lowered, there is a possibility that the steering stability and the ride comfort may be lowered due to the influence of the input load.

  On the other hand, in the present invention, since the support member 61 is integrally fixed to the vehicle body frame 20, a desired rigidity can be secured, and the mounting member 62 is detachably fixed to the support member 61. Therefore, repairability can also be improved. That is, by making it possible to attach and detach only the outfitting member 62 that constitutes a part of the lateral rod bracket 60, it is possible to improve the repairability while suppressing a decrease in steering stability and riding comfort.

  In the configuration of the present embodiment, the arrangement of the lateral rods 54 can also be adjusted by adjusting the attachment position of the mounting member 62 with respect to the support member 61. Thereby, steering stability or riding comfort can be further improved. For example, if the battery unit 30 is disposed behind the vehicle 10, the vehicle 10 tends to oversteer. However, by adjusting the attachment position of the outfitting member 62 and bringing the lateral rod 54 close to a horizontal state, the tendency of oversteering of the vehicle 10 is suppressed, and the steering stability and riding comfort can be improved.

  The lateral rod bracket 60 that supports the lateral rod 54 receives a load from all directions, but the lateral rod bracket 60 includes the support member 61 and the rigging member 62 so that the load is well dispersed. Can be made. In the present embodiment, the support member 61 has a closed cross-sectional structure as described above, whereas the outfitting member 62 has an open cross-sectional structure, and the rigidity of the outfitting member 62 is lower than that of the support member 61. For example, the rigidity of the mounting member 62 can be made lower than that of the support member 61 by making the plate thickness of the mounting member 62 thinner than the thickness of the support member 61 or changing the material of the mounting member 62 and the support member 61. it can. For this reason, the load input to the rigging member 62 can be favorably dispersed in the support member 61.

  In the present embodiment, the outfitting member 62 is fixed to a plurality of surfaces intersecting the support member 61 by fastening members 66. As a result, the outfitting member 62 can be relatively firmly fixed to the support member 61, and when the load is input to the outfitting member 62, the displacement of the outfitting member 62, the occurrence of dropping, and the like are suppressed. be able to.

  As mentioned above, although one Embodiment of this invention was described, Of course, this invention is not limited to such Embodiment. The present invention can be modified as appropriate without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the present invention has been described by taking an electric vehicle such as an electric vehicle as an example. However, the present invention can also be applied to a vehicle such as an automobile traveling by an engine (internal combustion engine). Is.

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Car body 20 Car body frame 21 Side member 22 Cross member 30 Battery unit 40 Front wheel 41 Rear wheel 50 Rear suspension 51 Rear axle 52 Suspension spring 53 Shock absorber 54 Lateral rod 55 Trailing arm 60 Lateral rod bracket 61 Support member 62 Mounting member 63 First extending portion 64 Second extending portion 65 Groove portion 66 Fastening member

Claims (4)

A vehicle body frame having a pair of side members extending in the vehicle front-rear direction and a cross member extending in the vehicle width direction of the vehicle and fixed to the pair of side members via a lateral rod bracket A vehicle body structure in which one end of a lateral rod is connected,
A support member in which the lateral rod bracket is integrally fixed to the body frame, and a fitting in which one end of the lateral rod is attached to the support member without being fixed to the body frame. and the member, in the configuration,
Further, the outfitting member is detachably fixed to the support member by a fastening member on the upper side, and holds one end of the lateral rod on the lower side located below the upper side. Characteristic vehicle body structure. The vehicle body structure according to claim 1, wherein the outfitting member has an insertion groove into which the lateral rod is inserted and has an open cross-sectional structure, while the support member has a closed cross-sectional structure. The vehicle body structure according to claim 1, wherein the outfitting member has lower rigidity than the support member. The vehicle body structure according to any one of claims 1 to 3, wherein the outfitting member is fastened to the support member by a fastening member from a vehicle width direction and a front-rear direction of the vehicle.

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