JP2932128B2 - Mount bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bracket, and more particularly to a mounting bracket for supporting a drive motor and a reduction gear of an electric vehicle.

[0002]

2. Description of the Related Art Generally, a drive motor of an electric vehicle and a reduction gear are integrated with each other, and are attached to a frame member such as a front cross member of a vehicle body via a common mount bracket. JP-A-60-14
No. 6724.

[0005] As shown in FIG. 5, the mount bracket 70 is elongated, and one end 70 A is fixed to the front cross member 72. On the other hand, the mount bracket 70 extends obliquely upward and rearward of the vehicle body, and a drive motor 74 and a reduction gear 76 are supported via a mount 78 at the other end 70B.

[0004]

However, in this mount bracket 70, the direction of transmission of the rotational force of the drive motor 74 acting on the end 70B of the mount bracket 70 is centered on the rotation axis 74A of the drive motor 74. The direction of transmission of the rotational force of the reduction gear 76 acting on the end 70B of the mount bracket 70 corresponds to the rotational axis 76A of the reduction gear 76. It is a tangential direction along the center circle (the direction of arrow R in FIG. 5).

Therefore, the end 7 of the mounting bracket 70
The direction of transmission of the resultant force of the rotational force of the drive motor 74 acting on OB and the rotational force of the reduction gear 76 (the direction of the arrow W in FIG. 5) intersects the axis 70C of the mount bracket 70.

For this reason, the mount bracket 70 and the end 70A of the mount bracket 70 are fixed by the combined force of the rotational force of the drive motor 74 and the rotational force of the reduction gear 76 acting on the end 70B of the mount bracket 70. The torsional moment is applied to the cross member 72 (FIG. 5).
Arrow M) acts. For this reason, reinforcement for improving the rigidity of the cross member 72 is required, and there is a problem that the weight of the vehicle body increases.

In view of the above, the present invention provides a mounting bracket and a supporting member for supporting the mounting bracket,
It is an object of the present invention to provide a mounting bracket that can prevent a torsional moment caused by rotation of a drive motor and a reduction gear.

[0008]

According to a first aspect of the present invention, there is provided an elongate mount having at one end a mount for mounting a drive motor and a reduction gear. A mounting bracket having a fixing portion to a support member at a portion thereof , wherein the mounting bracket
In the longitudinal direction, the rotational force of the drive motor and the reduction
It is characterized in that the direction of transmission of the resultant force with the rotational force of the gear is matched .

[0009]

In the mount bracket of the present invention, when the drive motor and the reduction gear rotate, the resultant force of the rotational force of the drive motor and the rotational force of the reduction gear is provided at one end of the elongated mount bracket. Is input to the mounted mounting portion, and is transmitted to the support member from the fixed portion provided at the other end. In this case, mount bracketing
The longitudinal direction of the unit is determined by the rotational force of the drive motor and the reduction.
Since it matches the direction of transmission of the resultant force with the rotational force of the gear ,
The resultant force acts in the axial direction of the mount bracket.

Therefore, no torsional moment is generated in the mount bracket and the support member, and there is no need to reinforce the mount bracket and the support member, so that the weight can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a mounting bracket according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a forward direction of the vehicle, an arrow IN indicates an inward direction of the vehicle width, and an arrow UP indicates an upward direction of the vehicle.

As shown in FIG. 4, an electric vehicle body 1
A pair of front side members 12 are arranged along the front and rear sides of the vehicle body in the vicinity of the lower end of the front portion 10A of the vehicle 0 in the vehicle width direction.

As shown in FIG. 2, the front side member 12 includes a front side member outer 14 that forms the vehicle width direction outside portion of the front side member 12 and a front side member that forms the vehicle width direction inside portion of the front side member 12. The side member inner 16 has a closed cross-sectional structure extending in the vehicle front-rear direction.

Gusset front cross member side reinforcements 18 are fixed to the front lower portions of the pair of front side members 12 at opposing positions. These gusset front cross member side reinforcements 18 have a V-shaped closed rectangular cross-sectional structure, and each of the open ends of the legs 18A and 18B has a pair of upwardly extending pairs. Vertical flange 18
C, 18D and a pair of horizontal flanges 18E, 18F extending forward or rearward of the vehicle body, respectively.

The vertical flange 18C of the gusset front cross member side reinforcement 18 is welded to the lower portion of the vehicle width direction inner side surface 12A of the front side member 12, and the vertical flange 18D of the gusset front cross member side reinforcement 18 is The front side member 12 is welded to a lower portion of the outer surface 12B in the vehicle width direction. The horizontal flange 18 of the gusset front cross member side reinforcement 18 is also provided.
E and 18F are the lower surface 12C of the front side member 12.
Respectively.

A receiving portion 1 is provided at the lower end top 18G of the gusset front cross member side reinforcement 18.
8H is formed to project inward in the vehicle width direction. The cross-sectional shape of the receiving portion 18H as viewed from the inside in the vehicle width direction is an arc shape with the opening directed upward, and the receiving portion 18H has both ends in the vehicle width direction of the front cross member 20 as a support member. 20A is welded.

The front cross member 20 is made of a straight pipe material, and a mount bracket 22 is fixed to a middle portion in the longitudinal direction.

As shown in FIG. 1, the mount bracket 22 has a long shape when viewed from the vehicle width direction.
One end is a mount mounting portion 22A. A cylindrical mount 28 that supports the drive motor 24 and the reduction gear 26 is mounted on the mount mounting portion 22A. The other end of the mount bracket 22 is fixed to the front cross member 20 by a fixing portion 22B.
It has been.

As shown in FIG. 3, the axis 24A of the drive motor 24 is substantially parallel to the front cross member 20, and the axis 26A of the reduction gear 26 is also substantially parallel to the front cross member 20. I have.

Accordingly, as shown in FIG. 1, in the mount bracket 22, the direction of transmission of the rotational force of the drive motor 24 acting on the mount mounting portion 22A of the mount bracket 22 is centered on the rotation axis 24A of the drive motor 24. The direction of transmission of the rotational force of the reduction gear 26 acting on the mount mounting portion 22A of the mount bracket 22 depends on the rotational axis of the reduction gear 26. It is a tangential direction (the direction of arrow R in FIG. 1) along a circle centered at 26A.

For this reason, the transmission direction of the resultant force of the rotational force of the drive motor 24 and the rotational force of the reduction gear 26 acting on the mount mounting portion 22A of the mount bracket 22 passes through a region between the arrows N and R. 1 is the direction of the arrow W, and the mount bracket 22 is set on the arrow W.

As shown in FIG. 2, the fixing portion 22B of the mount bracket 22 to the front cross member 20 is
It is curved in an arc shape and is welded to the outer peripheral surface of the front cross member 20. Also, the mounting bracket 22
The mount mounting portion 22A is composed of a pair of parallel pieces extending from both ends in the vehicle width direction of the fixing portion 22B, and the mount 28 inserted between these parallel pieces is mounted by bolts 30 and nuts 32. Have been.

The operation of this embodiment will be described below. In the mount bracket 22 of the present embodiment, when the drive motor 24 and the reduction gear 26 rotate, the combined force of the rotational force of the drive motor 24 and the rotational force of the reduction gear 26 causes the mounting of the elongated mount bracket 22 to be mounted. Fixed part 2 which is input to the part 22A and is provided at the other end.
2B to the front cross member 20. In this case, since the longitudinal direction of the mount bracket 22 matches the transmission direction of the resultant force of the rotational force of the drive motor 24 and the rotational force of the reduction gear 26 (the direction of the arrow W in FIG. 1), The resultant force of the rotational force of the drive motor 24 and the rotational force of the reduction gear 26 acts in the direction of the center 22C.

Therefore, no torsional moment is generated in the mount bracket 22 and the front cross member 20, and there is no need to reinforce the mount bracket 22 and the front cross member 20, so that the weight can be reduced.

[0026]

The mount bracket according to the present invention has a long shape and has at one end a mount mounting portion to which a mount for supporting the drive motor and the reduction gear is mounted, and at the other end, a mounting member for the support member. A mounting bracket having a fixing portion, wherein the mounting bracket has a longitudinal direction.
Between the rotational force of the drive motor and the reduction gear.
Since the direction of transmission of the resultant force with the rotational force is matched, there is an excellent effect that a torsional moment due to the rotation of the drive motor and the reduction gear is not generated in the mount bracket and the support member supporting the mount bracket.

[Brief description of the drawings]

FIG. 1 is a side view showing a mount bracket according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a mount bracket according to one embodiment of the present invention as viewed from an obliquely upper front side of a vehicle body.

FIG. 3 is a perspective view showing a motor and a reduction gear supported by a mount bracket according to one embodiment of the present invention, as viewed from an obliquely upper rear side of the vehicle body.

FIG. 4 is a perspective view showing a vehicle body to which the mount bracket according to one embodiment of the present invention is applied, as viewed from a diagonally lower rear side of the vehicle body.

FIG. 5 is a side view showing a mount bracket according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Body 20 Front cross member (support member) 22 Mount bracket 22A Mount attaching part 22B Fixed part 22C Shaft center 24 Drive motor 26 Reduction gear 28 Mount

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tadahiko Fuse, Kanagawa Automobile Industry Co., Ltd. 58) Field surveyed (Int.Cl. ⁶ , DB name) B60K 1/00 B60K 5/12

Claims (1)

(57) [Claims] 1. A mounting bracket having an elongated shape and having at one end a mount mounting portion to which a mount for supporting a drive motor and a reduction gear is mounted, and having a fixing portion to a support member at the other end. Oh , the mount
The longitudinal direction of the racket, the rotational force of the drive motor and the
Match the direction of transmission of the resultant force with the rotational force of the reduction gear.
Mount bracket, characterized in that it was.