JP2000313361A - Support structure of vehicle suspension bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give sufficient rigidity to a suspension bracket extending from a vehicle frame greatly. SOLUTION: Upper end parts of parallel side plates 11, 12 of a suspension bracket 1 are fixed on a side frame F and a cross member M. A support shaft for connecting terminals of a trailing arm so as to turn freely is installed between the side plates 11 and 12. The side plates 11, 12 are connected by a connection plate 15 and are integrated, the integrated side plates 11, 12 and the side frame F are mutually connected by a support bar 2 to form a substantially triangular truss, and the integrated side plates 11, 12 and the cross member M are mutually connected by a support bar 3 to form a substantially triangular truss.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a support structure for a vehicle suspension bracket.

[0002]

2. Description of the Related Art FIGS. 8 and 9 show an example of a conventional suspension bracket. The suspension bracket 5 has parallel side plates 51, 52, and these side plates 51, 52 are extended in the vehicle front-rear direction by mounting portions 53, 54 protrudingly formed at front and rear positions (left and right positions in FIG. 8) at upper ends. F is fixed to the left and right side surfaces (FIG. 9) by welding (×
mark). A support shaft 61 using bolts between the side plates 51 and 52
An inner cylinder of a vibration-proof rubber body (not shown) disposed inside a cylindrical base end 621 of a trailing arm 62 extending rearward of the vehicle is rotatably fitted and connected to the support shaft 61. Have been.

[0003]

By the way, in the conventional suspension bracket 5, the offset amount D (FIG. 8) above the side frame F increases as the vehicle height increases, or the trailing arm 6
When the diameter of the base end 621 of the second cylinder 621 increases, the side plates 51 and 52 need to be extended downward to increase the size. In this case, the thickness of the side plates 51 and 52 alone secures sufficient rigidity. There was a problem that it was difficult to do.

Accordingly, an object of the present invention is to solve such a problem, and an object of the present invention is to provide a suspension bracket support structure capable of imparting sufficient rigidity to a suspension bracket greatly extending from a vehicle frame.

[0005]

In order to achieve the above object, according to the present invention, there are provided parallel side plates (11, 12, 41, 42) fixed to a vehicle frame (F). , 12, 41, 42), a suspension plate (1, 4) on which a support shaft for rotatably connecting the base end of the trailing arm is mounted.
1, 12, 41, 42) (15, 4)
3) is provided, and the side plate (1) is provided by the connecting portions (15, 43).
1, 12, 41, 42) and the integrated side plates (11, 12, 41, 42) and the vehicle frame (F) are connected by the first support rod (2) to form a substantially triangular truss. At the same time, the second support rod (3) is disposed in a direction substantially orthogonal to the first support rod (2) in plan view, and the integrated side plate (11,
12, 41, 42) and the vehicle frame (M) are connected by a second support rod (3) to form a substantially triangular truss.
The “vehicle frame” is a concept that means a frame member that forms a chassis such as a side frame and a cross member. Also, a pipe material can be used as the first and second support rods.

In the present invention, a substantially triangular truss is formed by the first and second support rods disposed in a substantially orthogonal direction, and the truss allows the side plate of the suspension bracket to protrude greatly from the vehicle frame.
The rigidity can be reliably ensured. Further, when the first and second support rods are made of a pipe material, the bending durability is excellent as compared with using a solid material, and the plate thickness is reduced when both ends of the pipe material are crushed flat. Since it is doubled, sufficient mounting strength can be obtained.

[0007] The reference numerals in parentheses indicate the correspondence with specific means described in the embodiments described later.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 is a view of a vehicle frame viewed from a rear lower side, in which a rear side frame F having a U-shaped cross section is offset upward while reducing its diameter. (Rightward), and one end of the cross member M is abutted and fixed to the inner surface thereof from an orthogonal direction. A suspension bracket 1 is provided on a rear side frame F portion where the cross member M is abutted and fixed, and is supported by two pipe-shaped support rods 2 and 3.

FIGS. 2 and 3 show details of a support structure of a suspension bracket (hereinafter simply referred to as a bracket) 1.
2 is an exploded perspective view of the vehicle viewed from below, and FIG. 3 is an exploded perspective view of the vehicle viewed from below. The bracket 1 has parallel side plates 11 and 12, and the side plate 11 has a rectangular recess 13 formed in the center of the upper end and a welding flange portion 14 bent at right angles around the recess. The left and right side plates 11 and 12 are connected to the connecting plate 1 connected to these leading edges.
5 are integrated while maintaining the parallel posture. Further, through holes 111 and 121 are provided in both side plates 11 and 12 at positions corresponding to the lower half, and these through holes 111 and 12 are provided.
1, a support shaft for rotatably connecting a base end of a trailing arm (not shown) is inserted and bridged.

The connecting plate 15 is formed in a substantially U-shape in a plan view (FIG. 4), and the upper and lower central portions of the outer side 151 are larger rearward along the side plate 12 than the inner side 152 (FIG. 4).
To the right) to the vicinity of the through hole 121, where the through hole 1
A through hole 154 corresponding to 21 is formed (FIG. 4).
The center of the front side 153 of the connecting plate 15 is forward (left side in FIG. 4).
At the upper edge of the front side 153, a welding flange portion 16 (FIG. 3) bent forward is formed, and the lower edge is bent rearward to form the mounting seat 17. Partition plate 1 having a width equal to the distance between both side plates 11 and 12
8 (FIG. 1). The partition plate 18 is formed by bending a plate material (FIG. 2).
9 is formed, the main body is bent in a substantially Z-shape, and both sides are welded and fixed to the inner surfaces of the side plates 11 and 12.

In the bracket 1 having the above structure, the inner side plate 11 is fitted into the outer periphery of the cross member M with the concave portion 13 at the upper end fixed by a welding flange portion 14, and the outer side plate 12 has the upper end portion. It is fixed by welding to the outer surface of the side frame F (see FIG. 1). Further, the welding flange 16 of the connecting plate 15 and the welding flange 19 of the partition plate 18 are provided.
Are fixed to the lower surface of the side frame F by welding.

Each of the pipe-like support rods 2 and 3 is made of a pipe material having a thickness of 1.6 mm and a thickness of 30φ.
1, 22 and 31, 32 (Fig. 2) are flattened,
Attachment holes 211, 221 and 3 at both ends 21 to 32, respectively.
11, 321 are provided. One end 21 of the support rod 2 has the mounting hole 17 of the mounting seat 17 of the bracket 1.
1, and the other end 22 is extended to the front of the vehicle and bolted to a mounting hole F1 provided on the lower surface of the side frame F (FIGS. 1 and 2). On the other hand, one end 31 of the support rod 3 is bolted to the bracket side plate 11 together with a trailing arm (not shown) by bolting.
Reference numeral 2 extends in the vehicle width direction substantially orthogonal to the support rod 2 and is bolted to the rear side surface of the cross member M.

The brackets 1 are supported by the support rods 2 and 3 from front and rear and right and left directions. That is,
In the front-rear direction, as shown in FIG.
8. A substantially triangular truss is formed by the side frame F as indicated by oblique lines, while a substantially triangular truss is formed by the support rod 3, the side plate 11, and the cross member M in the left-right direction. By forming these trusses,
Even if the side plates 11 and 12 of the bracket 1 are largely extended downward from the side frame F, the rigidity thereof can be reliably ensured. In addition, the truss formed in the front-rear and left-right directions greatly enhances the rigidity of the bracket 1 in the vertical direction. Further, since the support rods 2 and 3 are formed of hollow pipe material, the bending resistance is superior to that of using a solid material, and both ends 2 of the flatly crushed pipe material are used.
In 1, 2, 31, and 33, the plate thickness is doubled, so that sufficient mounting strength can be obtained.

(Second Embodiment) In the first embodiment,
Although the side plates 11 and 12 of the bracket 1 and the connecting plate 15 are formed separately, as shown in FIGS. 6 and 7, they may be formed as a single plate. FIG. 6 is a perspective view of the bracket 4 as viewed from the rear and lower inside, and FIG. 7 is a perspective view of the bracket 4 as viewed from the front and lower lower side. The left and right side plate portions 41 and 42 and the front plate 41 Is integrally formed by bending a plate material. Support rod 2,
3 (see FIG. 1) are through holes 411 of the side plate 41 and through holes 441 of the mounting seat 44 formed at the lower end of the connecting portion 43, respectively.
Are respectively bolted to the bracket 4.
Other structures are the same as those of the first embodiment. With such a structure, the same effects as in the first embodiment can be obtained, and the bracket can be easily manufactured.

In each of the above embodiments, the partition plate 1
7 is not always necessary.

[0016]

As described above, according to the suspension bracket support structure of the present invention, sufficient rigidity can be imparted to the suspension bracket that extends greatly from the vehicle frame.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle frame according to a first embodiment of the present invention as viewed from a lower rear side.

FIG. 2 is an exploded perspective view of the bracket support structure according to the first embodiment of the present invention, as viewed from below the vehicle.

FIG. 3 is an exploded perspective view of the bracket support structure according to the first embodiment of the present invention as viewed from below the outside of the vehicle.

FIG. 4 is a horizontal sectional view of the suspension bracket with the partition plate removed according to the first embodiment of the present invention.

FIG. 5 is a schematic side view of a bracket support structure according to the first embodiment of the present invention.

FIG. 6 is a perspective view of a suspension bracket according to a second embodiment of the present invention, as viewed from the inner rear and lower part.

FIG. 7 is a perspective view of a suspension bracket according to a second embodiment of the present invention, as viewed from the front and lower outside.

FIG. 8 is a schematic side view showing a state in which a conventional suspension bracket is installed on a side frame.

FIG. 9 is a schematic sectional view showing a state in which a conventional suspension bracket is installed on a side frame.

[Explanation of symbols]

1: Suspension bracket, 11, 12: Side plate, 1
5 Connection plate, 2, 3 support rod, 4 suspension bracket, 41, 42 side plate portion, 43 connection portion, F side frame, M cross member.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Koji Mori, Inventor 395-1, Kaminobu, Kokubu-shi, Kagoshima F-term in Toyota Auto Body Research Laboratory Co., Ltd. (Reference) 3D001 AA17 BA04 BA07 DA08 3D003 AA01 BB01 CA48 DA29

Claims (1)

[Claims] 1. A suspension bracket having parallel side plates fixed to a vehicle frame and having a support shaft between the side plates for rotatably connecting a base end of a trailing arm, wherein the side plates are provided. A connecting portion is provided for connecting the two, the side plates are integrated by the connecting portion, and the integrated side plate and the vehicle frame are connected by a first support rod to form a substantially triangular truss, and the first support is provided. A second support bar is disposed in a direction substantially orthogonal to the bar in a plan view, and the integrated side plate and the vehicle frame are connected by the second support bar to form a substantially triangular truss. Support structure for vehicle suspension bracket.