Suspension member structure

Abstract

A suspension member structure includes a suspension member and a motor support. The suspension member has a pair of side beam portions and motor support mounting holes formed on the pair of side beam portions, respectively. The motor support is pressed into the motor support mounting holes from the outside in the vehicle width direction. A step having a height difference in the vehicle width direction is formed in a peripheral portion of the motor support mounting hole in a portion on the inside in the vehicle width direction of the side beam portion. A front side flat portion and a rear side flat portion are provided on both sides of the step in the peripheral portion of the motor support mounting hole, respectively, the front side flat portion and the rear side flat portion facing in a direction orthogonal to a direction in which the motor support is pressed into the motor support mounting hole.

Description

Technical Field

[0001] This invention relates to a suspension component structure. Background Technology

[0002] Japanese Patent Application Publication No. 2012-041009 discloses a vehicle rear structure equipped with motors that independently drive the left and right rear wheels. The rear of the vehicle described in this document includes: a pair of left and right rear side frames extending in the vehicle's longitudinal direction; a pair of left and right motors that independently drive the left and right rear wheels; a motor mounting component for mounting the left and right motors to the vehicle body; and a crossbeam extending in the vehicle width direction behind the left and right motors. The rear portion of the motor mounting component is connected to the crossbeam, and its front portion is connected to the left and right rear side frames. Thus, the left and right motors are mounted to the vehicle body via the motor mounting component. Summary of the Invention

[0003] However, in a structure in which the motor is supported on the suspension component via a motor bracket and the motor bracket is installed in the suspension component by pressing, it is preferable that the motor bracket can be pressed into the suspension component in a stable posture.

[0004] In view of the above, the object of the present invention is to obtain a suspension component structure that can press the motor bracket into the suspension component in a stable posture.

[0005] The suspension component structure of the first embodiment includes: a suspension component having a pair of side beams extending along the vehicle's longitudinal direction on both sides in the vehicle width direction and mounting holes formed on the pair of side beams and penetrating along the vehicle width direction; and a motor bracket installed in the suspension component in a state where it is pressed into the mounting holes from the outside in the vehicle width direction and supports the motor. A step with a height difference in the vehicle width direction is formed at the periphery of the mounting hole in the inner part of the side beam in the vehicle width direction. Flat portions are respectively provided on both sides of the periphery of the mounting hole that sandwich the step, and the surfaces of the flat portions face a direction orthogonal to the direction in which the motor bracket is pressed into the mounting hole.

[0006] In the first type of suspension component structure, a step with a height difference in the vehicle width direction is formed around the mounting hole in the inner part of the side beam portion constituting part of the suspension component. Furthermore, flat portions are provided on both sides of the mounting hole periphery, clamping the step, with the surfaces of these flat portions facing a direction orthogonal to the direction in which the motor bracket is pressed into the mounting hole. In this structure, the load when pressing the motor bracket into the mounting hole can be borne by having a clamp or the like abut against the flat portions formed on both sides, clamping the step, around the mounting hole. This allows the motor bracket to be pressed into the suspension component in a stable posture.

[0007] In the second type of suspension component structure, when viewed from the inside in the vehicle width direction, the planar portion formed on one side by clamping the step in the periphery of the mounting hole is formed in a C-shape along the periphery of the mounting hole, and the planar portion formed on the other side by clamping the step in the periphery of the mounting hole is formed in a C-shape along the periphery of the mounting hole.

[0008] In the second type of suspension component structure, a flat portion formed on one side with a step sandwiched in the periphery of the mounting hole is formed in a C-shape along the periphery of the mounting hole. Furthermore, a flat portion formed on the other side with a step sandwiched in the periphery of the mounting hole is also formed in a C-shape along the periphery of the mounting hole. In this structure, compared to a structure where the flat portions are not formed in a C-shape along the periphery of the mounting hole, the increase in the area of ​​the flat portions can be suppressed. As a result, for example, the increase in processing time when forming the flat portions by machining can be suppressed.

[0009] The suspension component structure involved in this invention has the excellent effect of pressing the motor bracket into the suspension component in a stable posture. Attached Figure Description

[0010] Hereinafter, with reference to the accompanying drawings, the features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described, in which the same reference numerals denote the same elements, and wherein: Figure 1 It is a top view showing suspension components, etc.

[0011] Figure 2 This is a side view showing suspension components, etc.

[0012] Figure 3 This is an enlarged 3D view of the area with mounting holes on the right side beam, viewed from the inside in the vehicle width direction.

[0013] Figure 4 It is a cross-sectional view of suspension components, etc., when the part with mounting holes is cut in the right side beam along the front-rear direction and the vehicle width direction. Detailed Implementation

[0014] use Figures 1-4 The rear part 10 of a vehicle to which the suspension structure according to the embodiments of the present invention is applied will be described. Furthermore, in each figure, arrow FR appropriately indicates the front side of the vehicle, arrow UP indicates the upper side of the vehicle, arrow LH indicates the left side in the vehicle width direction (left-right direction), and arrow RH indicates the right side in the vehicle width direction (left-right direction). In the following description, unless otherwise stated, front-back, up-down, and left-right directions refer to front-back in the front-back direction, up-down in the up-down direction, and left-right in the left-right direction.

[0015] like Figure 1 and Figure 2 As shown, a suspension member 12 is provided in the rear part 10 of a vehicle to which the suspension member structure of this embodiment is applied. Various arms, etc., supporting left and right rear wheels (not shown), are mounted on this suspension member 12. Furthermore, in Figure 1 and Figure 2 The portion where various arms are mounted on the suspension component 12 is omitted. Furthermore, a motor 14 for driving the left and right rear wheels is supported on the suspension component 12 via a motor bracket 16.

[0016] As an example, the suspension component 12 is formed from die-cast aluminum or the like, forming a structure in which all parts are integrally formed, as described later. This suspension component 12 includes a pair of left and right side beams 18 extending in the longitudinal direction on both sides in the vehicle width direction, and a front crossbeam 20 connecting the front ends of the left and right side beams 18 in the left-right direction. Furthermore, the suspension component 12 includes a rear crossbeam 22 connecting the rear ends of the left and right side beams 18 in the left-right direction; and a middle crossbeam 24 connecting the middle portions of the left and right side beams 18 in the longitudinal direction in the left-right direction.

[0017] like Figure 1 As shown, when viewed from above, the shape of the area from the center of the left and right side beams 18 in the front-rear direction to the front end becomes a shape that curves slightly outward in the vehicle width direction as it moves towards the front. Figure 2 As shown, the middle portion of the left and right side beam portions 18 in the front-rear direction has an upper middle beam portion 26 extending in the front-rear direction and a lower middle beam portion 28 extending in the front-rear direction below the upper middle beam portion 26. An opening 30 is formed between the upper middle beam portion 26 and the lower middle beam portion 28 for the drive shaft for transmitting the rotation of the motor 14 to the rear wheel to pass through in the left-right direction.

[0018] like Figure 1 and Figure 2 As shown, a front fixing part 32 (not shown) is provided at the front end of a pair of left and right side beams 18 and is fixed to a vehicle body (not shown). A bracket member mounting hole 34 is formed on this front fixing part 32 for mounting a bracket member (not shown) by pressing or inserting it. The front fixing part 32 is fixed to the vehicle body by the bracket member mounted in the bracket member mounting hole 34.

[0019] A rear-side fixing part 36 (not shown) is provided at the rear end of a pair of left and right side beams 18 and is fixed to a vehicle body (not shown). A bracket member mounting hole 38 is formed on this rear-side fixing part 36 for mounting a bracket member (not shown) by pressing or inserting it. The rear-side fixing part 36 is fixed to the vehicle body by the bracket member mounted in the bracket member mounting hole 38.

[0020] like Figure 1 As shown, when viewed from above, the front crossbeam 20 has a shape that curves slightly rearward toward the center in the vehicle width direction. This front crossbeam 20 is mounted between the front fixing portions 32 of the pair of left and right side beams 18. Furthermore, the rear crossbeam 22 is mounted between the rear fixing portions 36 of the pair of left and right side beams 18. Moreover, as... Figure 1 and Figure 2 As shown, the middle crossbeam 24 is mounted between the rear ends of the lower middle beam 28 of the left and right side beams 18.

[0021] like Figure 2 , Figure 3 and Figure 4 As shown, a motor bracket mounting hole 40 is formed on the rear end side of the upper middle beam portion 26 of the left and right pair of side beam portions 18, serving as a through mounting hole extending along the vehicle width direction. A bushing 42, forming part of the motor bracket 16, is pressed into and installed in this motor bracket mounting hole 40 from the outside in the vehicle width direction. A motor bracket body 44, forming another part of the motor bracket 16, is fixed to the bushing 42. Furthermore, the motor 14, disposed between the left and right pair of side beam portions 18, is supported on the suspension member 12 via the motor bracket body 44 and the bushing 42.

[0022] like Figure 3 As shown, the portion at the rear end of the upper intermediate beam portion 26 where the motor bracket mounting hole 40 is formed includes: an outer wall portion 46 extending in the front-rear direction with the thickness direction in the vehicle width direction; an inner wall portion 48 extending in the front-rear direction with the thickness direction in the vehicle width direction relative to the outer wall portion 46; and a connecting portion 50 connecting the outer wall portion 46 and the inner wall portion 48 in the vehicle width direction. Furthermore, the motor bracket mounting hole 40 is formed to penetrate the outer wall portion 46, the connecting portion 50, and the inner wall portion 48 in the left-right direction. The shape of the motor bracket mounting hole 40 when viewed from the outside or inside in the vehicle width direction is circular. Furthermore, the inner circumferential surface of the motor bracket mounting hole 40 is cylindrical.

[0023] A step 52 with a height difference in the vehicle width direction is formed on the lower side of the periphery of the motor bracket mounting hole 40 in the inner wall portion 48. Furthermore, the front side of the periphery of the motor bracket mounting hole 40, which contains the step 52, forms a front planar portion 54, which is a planar portion facing a direction orthogonal to the direction in which the bushing 42 is pressed into the motor bracket mounting hole 40 (hereinafter referred to as the "press-in direction"). The shape of the front planar portion 54, viewed from the inside in the vehicle width direction, is formed in a C-shape along the periphery of the motor bracket mounting hole 40. The rear side of the periphery of the motor bracket mounting hole 40, which contains the step 52, forms a rear planar portion 56, which is a planar portion facing a direction orthogonal to the press-in direction. The shape of the rear planar portion 56, viewed from the inside in the vehicle width direction, is formed in a C-shape along the periphery of the motor bracket mounting hole 40. The front planar portion 54 and the rear planar portion 56 described above are formed by machining the inner wall portion 48. Furthermore, the front side planar portion 54 is offset outward in the vehicle width direction relative to the rear side planar portion 56. Moreover, the front side planar portion 54 and the rear side planar portion 56 extend parallel to each other. The angle between the front side planar portion 54 and the rear side planar portion 56 and the pressing direction is set to 90°.

[0024] like Figure 3 and Figure 4 As shown, in the embodiment described above, even in a structure where a step 52 is formed at the periphery of the motor bracket mounting hole 40, the load when pressing the bushing 42 into the motor bracket mounting hole 40 can be borne by having a clamp or the like abut against the front flat portion 54 and the rear flat portion 56 formed at the periphery of the motor bracket mounting hole 40. Therefore, the bushing 42 can be pressed into the suspension member 12 in a stable posture. Furthermore, the angles formed by the front flat portion 54 and the rear flat portion 56 with the pressing direction are not limited to 90°. The angles formed by the front flat portion 54 and the rear flat portion 56 with the pressing direction can be set to around 90° within a range that does not affect the pressing of the bushing 42 into the motor bracket mounting hole 40.

[0025] Furthermore, in this embodiment, the shapes of the front planar portion 54 and the rear planar portion 56, viewed from the inside in the vehicle width direction, are formed in a C-shape along the periphery of the motor bracket mounting hole 40. In this structure, compared to a structure where the shapes of the front planar portion 54 and the rear planar portion 56 are formed in a C-shape along the periphery of the motor bracket mounting hole 40, it is possible to suppress the increase in the area of ​​the front planar portion 54 and the rear planar portion 56. As a result, it is possible to suppress the increase in processing time when forming the shape of the front planar portion 54 and the rear planar portion 56 by machining.

[0026] Furthermore, in this embodiment, an example has been described where the shape of the front side planar portion 54 and the rear side planar portion 56, when viewed from the inside in the vehicle width direction, are formed in a C-shape along the periphery of the motor bracket mounting hole 40; however, the present invention is not limited to this. The shape of the front side planar portion 54 and the rear side planar portion 56, when viewed from the inside in the vehicle width direction, can be appropriately set taking into account the shape of the inner wall portion 48 of the side beam portion 18, etc.

[0027] The present invention has been described above as an embodiment of the invention, but the invention is not limited to the above description. Of course, various modifications can be made without departing from the spirit of the invention.

Claims

1. A suspension component structure, characterized in that, have: A suspension component having a pair of side beams extending along the vehicle's longitudinal direction on both sides in the vehicle width direction and mounting holes formed on the pair of side beams and penetrating along the vehicle width direction; and The motor bracket is installed on the suspension component in a manner that is pressed into the mounting hole from the outside in the vehicle width direction, and supports the motor. The periphery of the mounting hole in the inner part of the side beam in the vehicle width direction is formed with a step having a height difference in the vehicle width direction. Flat surfaces are provided on both sides of the step sandwiched in the periphery of the mounting hole, and the surfaces of the flat surfaces face a direction orthogonal to the direction in which the motor bracket is pressed into the mounting hole.

2. The suspension component structure according to claim 1, characterized in that, When viewed from the inside in the width direction of the vehicle, The flat portion formed on one side, which clamps the step within the periphery of the mounting hole, is formed in a C-shape along the periphery of the mounting hole. The flat portion formed on the other side, which is sandwiched between the steps in the periphery of the mounting hole, is formed in a C-shape along the periphery of the mounting hole.

Images