JPH0769238A - Cushion assembly - Google Patents

Abstract

PURPOSE:To provide a cushion assembly to maintain a temporarily fastening and installing condition of elastic bodies with a unique structure. CONSTITUTION:A cushion assembling body 10 is used when a sub-frame 12 is installed on a car body 14. An outer cylinder 16 is fixed to the sub-frame 12, and a first elastic body 18 is fixed inside of the outer cylinder. An inner cylinder 20 is fixed inside of the elastic body, and is arranged substantially vertically, and an upper end part 30 projects upward from the sub-frame 12, and is made to butt the car body 14, and has a part 31 to be fitted in an end part. A second elastic body 22 is arranged between the sub-frame 12 and the car body 14, and is formed in a cylindrical shape, and an intermediate plate 34 having a claw 35 to be fitted to the part 31 to be fitted of the inner cylinder is embedded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion assembly, and more particularly to a cushion assembly that is arranged between a subframe and a vehicle body when the subframe is attached to a vehicle body of an automobile by bolts extending substantially vertically.

When a subframe is mounted on a vehicle body, an outer cylinder fixed to the subframe, a cylindrical first elastic body fixed to the inner side of the outer cylinder, and a cylindrical first elastic body fixed to the inner side of the elastic body, There is a case in which a cushion assembly including an inner cylinder vertically arranged in the above and a second elastic body arranged between the subframe and the vehicle body is used (Japanese Utility Model Laid-Open No. 3-42481). The inner cylinder projects above the sub-frame, and the second elastic body surrounds the protruding part of the inner cylinder.

The second elastic body receives the sub-frame when it moves upward and plays a role of a bound stopper. Therefore, before the sub-frame is mounted on the vehicle body, the mounting work is smoothly performed. It is necessary to temporarily fix the sub-frame to the inner cylinder and to maintain the attachment state to the vehicle body after attaching the sub-frame to the vehicle body.

[0004]

In the cushion assembly, another plate member is fixed on the upper side of the second elastic body, and the second elastic body is temporarily fixed to the inner cylinder by the second elastic body. Friction is performed, and the second elastic body is maintained in the attached state by sandwiching another plate member between the inner cylinder and the vehicle body. As a result, if the friction is too large due to the manufacturing variation of the second elastic body, it takes time to fit the second elastic body into the inner cylinder, and conversely, if the friction is too small, the temporary fixing may occur. The second elastic body may fall off because it is not enough,
Inconvenience has occurred.

An object of the present invention is to provide a cushion assembly in which the second elastic body is temporarily fixed and the attached state is maintained by a structure different from that described above.

[0006]

SUMMARY OF THE INVENTION The present invention is a cushion assembly used when a subframe is attached to a vehicle body, wherein the outer cylinder is fixed to the subframe and the cylinder is fixed inside the outer cylinder. -Shaped first elastic body and an inner cylinder that is fixed inside the elastic body and is disposed substantially vertically and has an upper end projecting above the sub-frame and abutting against the vehicle body. An inner cylinder having a fitted portion at the end, and a tubular second elastic body arranged between the sub-frame and the vehicle body and fitted to the fitted portion of the inner cylinder. A second elastic body in which an intermediate plate having a claw to be fitted is embedded.

[0007]

[Operation and effect] When the pawl of the intermediate plate of the second elastic body is fitted into the fitted portion of the inner cylinder, the second elastic body is temporarily fixed. Further, the fitting state with respect to the vehicle body is maintained by the fitting.

Since the pawl of the intermediate plate is fitted to the fitted portion of the inner cylinder, the second elastic body can be formed so that a slight clearance is formed between the second elastic body and the inner cylinder. it can. As a result, workability when mounting the second elastic body on the inner cylinder can be improved.

Since the second elastic body has the intermediate plate buried therein, the spring constant can be secured by this. Further, as a result of embedding the intermediate plate, if the intermediate plate is an iron plate, the rustproofing treatment can be omitted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cushion assembly 10 is used to attach a subframe 12 to a vehicle body 14 as shown in FIG.
0 and a second elastic body 22.

The subframe 12 is known per se and supports the suspension arm. In the illustrated embodiment, the subframe 12 includes a plate member 24 having a cylindrical portion 25.
And a plate member 26 welded to the plate member 24. The plate member 26 has a cylindrical portion 27, and the cylindrical portion 27 is positioned inside the cylindrical portion 25 of the plate member 24.

The outer cylinder 16 is fixed to the sub-frame 12. In the illustrated embodiment, the outer cylinder 16 is the subframe 12
The flange 17 is press-fitted into the cylindrical portion 27 of the plate member 26, and the flange 17 provided at the lower end is abutted against the plate member 26. Outer cylinder 16
Is longer than the cylindrical portion 27.

The first elastic body 18 has a cylindrical shape and is an outer cylinder 16.
Fixed inside the. In the illustrated embodiment, the first elastic body 18 is formed of rubber into a substantially cylindrical shape, and is vulcanized and adhered to the inner peripheral surface of the outer cylinder 16. The second elastic body 18 has a convex portion 19 that projects downward from the flange 17 of the outer cylinder 16. The spring constant is secured by bringing this convex portion 19 into contact with the lower stopper 38.

The inner cylinder 20 is fixed inside the first elastic body 18 and arranged substantially vertically. The upper end portion 30 of the inner cylinder 20 projects above the sub-frame 12 and is abutted against the vehicle body 14. The end portion 30 has a fitted portion 31
Is provided.

In the illustrated embodiment, the inner cylinder 20 is made of a substantially cylindrical material and is vulcanized and bonded to the first elastic body 18. A portion of the end portion 30 of the inner cylinder 20 above the fitted portion 31 has a larger outer diameter than a portion below the fitted portion 31. As a result, a tapered surface is formed at the transition from the lower portion having the smaller outer diameter to the upper portion having the larger outer diameter, which is the fitted portion 31.

The second elastic body 22 is a tubular member arranged between the sub-frame 12 and the vehicle body 14, and has an intermediate plate having a pawl 35 fitted to the fitted portion 31 of the inner cylinder 20. 34 is buried.

In the illustrated embodiment, the second elastic body 22 is
A cylindrical intermediate plate 3 made of rubber.
4 is embedded by being vulcanized and bonded in the middle in the axial direction. Although the intermediate plate 34 is an iron plate, it may be formed of a resin plate. The pawl 35 of the intermediate plate 34 has a conical shape that is convex from the lower side toward the upper side.
When fitted into the fitted portion 31, the elastically deforms.

In the embodiment shown in FIG. 2, the fitted portion 32 of the inner cylinder 20 is in the form of a groove, but like the fitted portion 31, it has a tapered surface.

To assemble the cushion assembly 10,
The outer cylinder 16 is press-fitted into the cylindrical portion 27 of the plate member 24 of the subframe 12 from below. Then, the end portion 30 of the inner cylinder 20 comes to project upward from the sub-frame 12. When the second elastic body 22 is pushed into the projecting end portion 30 from above, the pawl 35 of the intermediate plate 34 reaches the fitted portion 31 and is fitted therein. In this state, the subframe 12
The cushion assembly 10 and the cushion assembly 10 are brought to a predetermined position on the vehicle body 14, and the upper end of the inner cylinder 20 is abutted against the vehicle body 14 to
The lower stopper plate 38 is applied to the lower end of the sub-frame 12 and the bolt (not shown) is passed through the inner cylinder 20 to attach the sub-frame 12 to the vehicle body 1.
Attach to 4.

When the vehicle is running and bounds, the plate member 24 of the sub-frame 12 pushes up the second elastic body 22 from below and presses it against the vehicle body 14. Is a tapered surface, the degree of fitting between the pawl 35 and the fitted portion 31 is large, so that the second elastic body 22 is more firmly fixed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of a cushion assembly according to the present invention.

FIG. 2 is a cross-sectional view showing an upper end portion of the inner cylinder, showing a form different from that shown in FIG.

[Explanation of symbols]

 10 Cushion Assembly 12 Sub-frame 14 Car Body 16 Outer Cylinder 18 First Elastic Body 20 Inner Cylinder 22 Second Elastic Body 34 Intermediate Plate 35 Claw

Claims (1)

[Claims] 1. A cushion assembly used when mounting a sub-frame to a vehicle body, comprising: an outer cylinder fixed to the sub-frame; and a tubular first elastic body fixed inside the outer cylinder. An inner cylinder fixed to the inside of the elastic body and arranged substantially vertically and having an upper end projecting above the sub-frame and abutting against the vehicle body,
An inner cylinder having a fitted portion at the end portion, and a tubular second elastic body arranged between the subframe and the vehicle body and fitted to the fitted portion of the inner cylinder. A second elastic body having an embedded intermediate plate having crucibles.