CN210371776U

CN210371776U - Rubber bushing for guide arm and pull rod

Info

Publication number: CN210371776U
Application number: CN201921419866.0U
Authority: CN
Inventors: 张瑞; 尹永宁; 郭祥龙
Original assignee: Shandong Mandipu Machinery Co Ltd
Current assignee: Shandong Mandipu Machinery Co Ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-04-21
Anticipated expiration: 2029-08-28

Abstract

The utility model discloses a rubber bush for guiding arm and pull rod, its characterized in that, including outer frame and inner frame vulcanizes the body, the inner frame vulcanizes the body and includes inner frame and rubber, rubber sets up between inner frame and outer frame, the inner frame is hollow structure, the inner frame outside sets up the cydariform arch, the rubber inboard corresponds with the cydariform arch and sets up the recess, the outside sets up annular step, the outer frame includes outer frame body and sets up the turn-ups portion at outer frame body both ends, the outer frame inboard corresponds with annular step and sets up the draw-in groove, inner frame vulcanizes the body and is pressed in through interference fit with the outer frame is connected, has increased rubber bush radial stiffness, simultaneously because the outer frame is not vulcanized, has improved rubber bush's torsion angle; and radial and axial atress of rubber bush are the extrusion force, avoid rubber to receive the pulling force, have improved the life of rubber sleeve.

Description

Rubber bushing for guide arm and pull rod

Technical Field

The utility model belongs to the technical field of the rubber accessory processing, concretely relates to rubber bush is used with pull rod to guiding arm.

Background

In recent years, the air suspension guide arm assembly of the automobile is used as an elastic element and a guide element, and plays a role in bearing and guiding. Its rubber bush plays buffering, shock attenuation and provides certain horizontal torsion angle, and current guide arm, rubber bush assembly for the pull rod, as figure 1, concrete structure is: the excircle of the inner sleeve is a straight section, the middle rubber and the inner and outer frameworks are integrally vulcanized, and necking processing is carried out. The structure has the advantages that rubber cracking is caused due to the fact that the vulcanization area of a product is smaller, the radial rigidity and the radial torsion angle are smaller, the service life is shorter, and the requirements of vehicles on complex road conditions and long-time running cannot be met.

Therefore, the prior art is yet to be further studied.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rubber bush for guiding arm and pull rod aims at solving the radial rigidity of rubber bush and the problem that the angle of torsion is all very little, fragile easily.

In order to solve the above problems, the utility model adopts the following technical scheme: the utility model provides a rubber bush for guiding arm and pull rod, vulcanizes the body including outer skeleton and inner frame, the inner frame vulcanizes the body and includes inner frame and rubber, rubber sets up between inner frame and outer skeleton, the inner frame is hollow structure, the inner frame outside sets up the cydariform arch, the rubber inboard corresponds with the cydariform arch and sets up the recess, and the outside sets up annular step, the outer skeleton includes the outer skeleton body and sets up in the turn-ups portion at outer skeleton body both ends, the outer skeleton inboard corresponds with annular step and sets up the draw-in groove.

The rubber both ends set up the buffering face, the buffering face is including extending face, inclined plane and fillet transition face, inclined plane one end links to each other with the extension face, and the other end links to each other with the transition face, the extension face extend to with inner frame terminal surface department.

The outer framework is of a hollow structure, one end of the flanging part is connected with the outer framework body, the other end of the flanging part is provided with a chamfer, and the chamfer is set to be 13-18 degrees.

The height of the drum-shaped bulge is 1/4-1/5 of the thickness of rubber, the length of the drum-shaped bulge is 1/2-2/3 of the length of the rubber, and the outer framework and the inner framework are installed in an interference fit mode.

The utility model has the advantages that:

1. the connection of the inner framework vulcanized body and the outer framework of the utility model is pressed in by interference fit, which increases the radial rigidity of the rubber bushing, and simultaneously improves the torsion angle of the rubber bushing because the outer framework is not vulcanized; and radial and axial atress of rubber bush are the extrusion force, avoid rubber to receive the pulling force, have improved the life of rubber sleeve.

2. Exoskeleton edge turn-ups receives the extrusion in-process at rubber, prevents that rubber from extruding from exoskeleton, and the protruding height of cydariform is big more, and rubber thickness just is more little, and radial rigidity is just big more behind the rubber compression, and protruding length is big more, and torsional rigidity just is big more, the utility model discloses a set up cydariform arch and corresponding structure, increased radial rigidity and torsional rigidity.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a schematic view of the structure of an endoskeleton vulcanizate;

FIG. 3 is an enlarged schematic view of A in FIG. 2;

FIG. 4 is an enlarged schematic view of B of FIG. 1;

fig. 5 is a schematic structural view of the outer frame of the present invention before flanging.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the following explains the present solution by way of specific embodiments and with reference to the accompanying drawings.

As shown in fig. 1-5, a rubber bushing for a guide arm and a pull rod comprises an outer frame 2 and an inner frame vulcanized body, wherein the inner frame vulcanized body comprises an inner frame 1 and rubber 3, and the rubber 3 is arranged between the inner frame 1 and the outer frame 2. The inner framework 1 is of a hollow structure, drum-shaped bulges are arranged on the outer side of the inner framework 1, and the drum-shaped bulges are arranged to increase the vulcanization area of rubber; the two ends of the inner hole of the inner frame 1 are processed with 1.5X 30-degree chamfers 106, bolts are easy to penetrate, the installation is convenient, and the roughness of the end surfaces 102 of the two inner frames is processed into

To improve the practical useStatic friction force.

The rubber 3 is provided with a groove corresponding to the drum-shaped protrusion on the inner side and an annular step 301 on the outer side, the outer framework 2 comprises an outer framework body 201 and flanging parts 202 arranged at two ends of the outer framework body 201, and the inner side of the outer framework body 201 corresponds to the annular step 301 to be provided with a clamping groove 203. The annular step 301 is arranged to improve rigidity and corresponds to the clamping groove 203 during press fitting, so that press fitting is facilitated.

The outer framework 2 is of a hollow structure, one end of the flanging part 202 is connected with the outer framework body 201, the other end of the flanging part is provided with a chamfer 211, and the chamfer 211 is set to be 13-18 degrees.

Specifically, the inner frame vulcanization body is formed by vulcanizing the inner frame 1 and the rubber 3, the outer frame 2 and the inner frame vulcanization body are installed in an interference fit mode, the outer frame 2 is processed into the downward flanging part 202 through a spinning processing mode, the radial rigidity of the rubber bushing is increased by the structure, the radial stress and the axial stress of the rubber 3 are extrusion forces, the rubber 3 is prevented from being pulled, and the service life of the rubber 3 is prolonged.

The both ends of rubber 3 set up buffering face 301, the buffering face is including extending face 311, inclined plane 312 and fillet transition face 313, inclined plane 312 one end links to each other with extending face 311, and the other end links to each other with transition face 313, extend face 311 extend to with inner frame terminal surface 102 department, specifically, the side design is inclined plane 102 and fillet transition face 313, the purpose is simple to operate.

The bulge height is 1/4-1/5 of the thickness of rubber 3, and the bulge length is 1/2-2/3 of the length of the rubber.

The above description is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a rubber bush for guiding arm and pull rod, its characterized in that, vulcanizes the body including outer skeleton and inner frame, the inner frame vulcanizes the body and includes inner frame and rubber, rubber sets up between inner frame and outer skeleton, the inner frame is hollow structure, the inner frame outside sets up the cydariform arch, the rubber inboard corresponds with the cydariform arch and sets up the recess, and the outside sets up annular step, the outer skeleton includes the outer skeleton body and sets up in the turn-ups portion at outer skeleton body both ends, the outer skeleton inboard corresponds with annular step and sets up the draw-in groove.

2. The rubber bushing for the guide arm and the pull rod as claimed in claim 1, wherein the two ends of the rubber are provided with buffering surfaces, the buffering surfaces comprise an extending surface, an inclined surface and a rounded transition surface, one end of the inclined surface is connected with the extending surface, the other end of the inclined surface is connected with the transition surface, and the extending surface extends to the end surface of the inner frame.

3. The rubber bushing for the guide arm and the pull rod as claimed in claim 1, wherein the exoskeleton is hollow, one end of the flanging portion is connected with the exoskeleton body, and the other end of the flanging portion is provided with a chamfer, and the chamfer is set to be 13-18 degrees.

4. The rubber bushing for a guide arm and drawbar of claim 1, wherein the crowning height is 1/4-1/5 of the rubber thickness and the crowning length is 1/2-2/3 of the rubber length.

5. The rubber bushing for a pilot arm and a tie rod according to claim 1, wherein the outer frame and the inner frame vulcanized body are installed by interference fit.