CN214999097U

CN214999097U - Suspension bushing assembly

Info

Publication number: CN214999097U
Application number: CN202120854605.2U
Authority: CN
Inventors: 李川建
Original assignee: Yuhuan Jianhong Machinery Manufacturing Co ltd
Current assignee: Yuhuan Jianhong Machinery Manufacturing Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-12-03
Anticipated expiration: 2031-04-23

Abstract

The utility model provides a suspension bush assembly belongs to car technical field. It has solved the not enough scheduling problem of current bush assembly life. Suspension bush assembly, including the endotheca, overcoat and the rubber body, the endotheca is including wearing to establish protruding section and two straight tube sections that stretch out the overcoat in the overcoat, the interior border department of rubber body both ends terminal surface has convex go-between, the go-between pastes and leans on the lateral surface of straight tube section and fixes, the outer border department of rubber body both ends terminal surface has convex solid fixed ring, gu fixed ring pastes and leans on the medial surface of overcoat and fixes, still have convex annular deformation ring one that is on the terminal surface at rubber body both ends, deformation ring one is located between go-between and the solid fixed ring, the surface of deformation ring one is the arc surface, convex deformation ring two has on the medial surface of go-between the inner, the lateral surface of deformation ring two is the face of cylinder, the arc transition face one has between the lateral surface of deformation ring two and the surface of deformation ring one. This suspension bush assembly can improve life.

Description

Suspension bushing assembly

Technical Field

The utility model belongs to the technical field of the car, a suspension bush assembly is related to.

Background

The suspension is a general term for a force transmission connecting device between a wheel and a vehicle body of an automobile, and has the functions of transmitting force and moment between the wheel and the vehicle body, buffering impact force transmitted to the vehicle body from an uneven road surface, and reducing vibration caused by the impact force so as to ensure that the automobile can run smoothly. The suspension comprises an elastic element, a shock absorber and a force transmission device which respectively play roles in buffering, shock absorbing and force transmission.

The elastic elements support vertical load and moderate and suppress vibration and impact caused by uneven road surface, and mainly comprise leaf springs, helical springs, torsion bar springs, air springs, rubber springs and the like. The shock absorber is used to suppress the shock of the spring after absorbing shock and the impact from the road surface, and is widely used in automobile to accelerate the attenuation of the vibration of the frame and the automobile body and improve the running smoothness of the automobile. The force transmission device comprises a control arm, a pull rod, a stabilizer bar and the like, and a ball head assembly and a bush assembly are used for connection on the control arm, the pull rod and the stabilizer bar.

Chinese patent literature discloses a rubber sleeve assembly for a control arm, the application number: CN 201720078952.4; the notice number is: CN206419389U ], comprises a sleeve body, a damping sleeve, a buffering sleeve and a connecting sleeve which are sequentially connected from inside to outside, wherein the sleeve body is provided with a buffering bulge, the damping sleeve is provided with a connecting groove matched with the buffering bulge, the two ends of the damping sleeve are both provided with buffering grooves, and the bottom surface of each buffering groove is a plane. The rubber sleeve assembly is a lining assembly, a general connecting sleeve is fixed on the control arm, and a shock absorber is arranged in the sleeve body. When the automobile shakes, relative axial displacement, radial displacement or axial radial composite displacement can take place between the adapter sleeve in the bush assembly and the cover body, and great deformation can take place for the bottom surface department of damping sleeve buffering recess at this moment, because the bottom surface of buffering recess is the plane, the elastic deformation volume of here is limited, causes the damping sleeve to crack damage in the bottom surface department of buffering recess easily to reduce the life of bush assembly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that prior art exists, provide a suspension bush assembly, the technical problem of solution is how to improve the life of bush assembly.

The purpose of the utility model can be realized by the following technical proposal:

the suspension bushing assembly comprises an inner sleeve, an outer sleeve and a rubber body arranged between the inner sleeve and the outer sleeve, wherein the inner sleeve comprises a middle protruding section and straight pipe sections arranged at two ends, the inner sleeve is arranged in the outer sleeve in a penetrating manner, the two straight pipe sections extend out of the outer sleeve, the inner edges of the end faces at two ends of the rubber body are provided with convex annular connecting rings, the connecting rings are attached to the outer side faces of the straight pipe sections and fixed, the outer edges of the end faces at two ends of the rubber body are provided with convex annular fixing rings, the fixing rings are attached to the inner side faces of the outer sleeve and fixed, the suspension bushing assembly is characterized in that the end faces at two ends of the rubber body are also provided with convex annular deformation rings I, the deformation rings I are arranged between the connecting rings and the fixing rings, the surface of the deformation rings I is an arc surface, the outer side faces at the inner ends of the connecting rings are provided with convex deformation rings II, and the outer side faces of the deformation rings II are cylindrical surfaces, and a first arc transition surface is arranged between the outer side surface of the second deformation ring and the surface of the first deformation ring.

The surface area of the end face of the rubber body is increased by the arrangement of the first deformation ring and the first arc transition face, the elastic deformation amount of the end face of the rubber body is increased, the end face of the rubber body can adapt to larger deformation, and meanwhile, the structural strength can be improved by the arc structure, so that the possibility of breakage and damage of the end face of the rubber body is reduced. And the setting of the second deformation ring increases the radial thickness of the inner end of the connecting ring, namely, the radial elastic deformation of the end face of the rubber body is increased, so that the end face of the rubber body can further adapt to larger deformation, and the possibility of breakage and damage of the end face of the rubber body is further reduced. Therefore, the suspension bush assembly can improve the service life.

In the suspension bushing assembly, a second arc transition surface is arranged between the outer end surface of the second deformation ring and the outer side surface of the connecting ring. The stress concentration condition between the outer end of the second deformation ring and the connecting ring can be improved by arranging the second arc transition surface, the fracture of the position where the outer end of the second deformation ring is connected with the connecting ring is avoided, and the service life of the bushing assembly is favorably ensured.

In the suspension bushing assembly, the second arc transition surface is connected with the outer side surface of the second deformation ring. Therefore, the radius of the second arc transition surface can be enlarged, the problem of stress concentration is better solved, and the service life of the bushing assembly is favorably ensured.

In the suspension bushing assembly, the protruding section is formed by the outward protrusion of the side wall of the inner sleeve, the outer side surface and the inner side surface of the protruding section are both spherical, the inner side surface of the rubber body is provided with a matching groove matched with the protruding section, and the wall surface of the matching groove is attached to and fixed on the outer side surface of the protruding section. The lateral surface and the medial surface of protruding section all are spherical, can improve the structural stability of protruding section, are favorable to guaranteeing the life of bush assembly.

In the suspension bushing assembly, the wall thickness of the convex section is equal to that of the straight pipe section. Therefore, the weight of the bushing assembly can be reduced as far as possible while the stable structure of the protruding section is ensured, the service life of the bushing assembly is favorably ensured, and the lightweight arrangement of the bushing assembly is realized.

In the suspension bushing assembly, the convex section and the straight pipe section are in arc transition. Therefore, the stability of the integral structure of the inner sleeve can be ensured, and the service life of the bushing assembly can be ensured.

In the suspension bushing assembly, the suspension bushing assembly further comprises a connecting sleeve, a mounting hole is formed in the connecting sleeve, the outer sleeve is arranged in the mounting hole in a penetrating mode and is fixed, an identification groove is formed in the opening edge of one end of the mounting hole, one end of the outer sleeve is located in the identification groove, and the other end of the outer sleeve extends out of the mounting hole.

When the bushing assembly is installed on the control arm, the connection sleeve and the arm body of the control arm are integrally formed. The identification groove has a direction identification function, and the position relation between the outer sleeve and the connecting sleeve is identified conveniently during assembly.

In the suspension bushing assembly, chamfers are arranged between the outer side surface of the outer sleeve and the end surfaces of the two ends of the outer sleeve. The chamfer has the guide effect, conveniently inserts the overcoat in the mounting hole.

Compared with the prior art, the utility model has the advantages of it is following:

the deformation ring I, the deformation ring II and the arc transition surface I are arranged, so that the elastic deformation and the structural strength of the end face of the rubber body are improved, the possibility of breakage and damage of the end face of the rubber body is reduced, and the service life of the suspension bush assembly is prolonged. The setting of circular arc transition face two, the lateral surface and the medial surface of bellying all are the sphere, and the wall thickness of bellying equals with the wall thickness of straight tube section, all is favorable to guaranteeing the life of bush assembly. The arrangement of the identification groove on the connecting sleeve facilitates the assembly of the bushing assembly.

Drawings

FIG. 1 is a cross-sectional view of the present bushing assembly;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an elevation view of the present bushing assembly as mounted on a control arm.

In the figure, 1, an inner sleeve; 1a, a convex section; 1b, a straight pipe section; 2. a jacket; 3. a rubber body; 3a, a matching groove; 3b, a connecting ring; 3c, deforming the ring I; 3d, fixing a ring; 3e, a deformation ring II; 3f, a first arc transition surface; 3g, a second arc transition surface; 4. connecting sleeves; 4a, mounting holes; 4b, identifying a groove; 5. an arm body.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and 2, a suspension bushing assembly includes an inner sleeve 1, a rubber body 3, an outer sleeve 2 and a connecting sleeve 4, wherein the inner sleeve 1 is inserted into the outer sleeve 2, and the rubber body 3 is fixedly connected between the inner sleeve 1 and the outer sleeve 2. The inner side surface of the rubber body 3 is attached and fixed on the outer side surface of the inner sleeve 1, and the outer side surface of the rubber body 3 is attached and fixed on the inner side surface of the outer sleeve 2. The connecting sleeve 4 is provided with a mounting hole 4a, and the outer sleeve 2 is arranged in the mounting hole 4a in a penetrating way and is fixed. In order to facilitate the assembly of the connecting sleeve 4 and the outer sleeve 2, chamfers are arranged between the outer side surface of the outer sleeve 2 and the end surfaces of the two ends of the outer sleeve 2. An identification groove 4b is formed in the opening edge of one end of the mounting hole 4a, one end of the outer sleeve 2 is located in the identification groove 4b, and the other end of the outer sleeve 2 extends out of the mounting hole 4 a.

The inner sleeve 1 comprises a convex section 1a positioned in the middle and straight pipe sections 1b positioned at two ends, the inner sleeve 1 is arranged in the outer sleeve 2 in a penetrating mode, and the two straight pipe sections 1b extend out of the outer sleeve 2. The bulge section 1a is formed by outwards bulging the side wall of the inner sleeve 1, the outer side surface and the inner side surface of the bulge section 1a are both spherical, the wall thickness of the bulge section 1a is equal to that of the straight pipe section 1b, and the bulge section 1a and the straight pipe section 1b are in arc transition.

The inner side surface of the rubber body 3 is provided with a matching groove 3a matched with the convex section 1a, and the wall surface of the matching groove 3a is attached to the outer side surface of the convex section 1a and fixed. The inner edges of the end faces of the two ends of the rubber body 3 are provided with convex connecting rings 3b, the connecting rings 3b are annular, and the connecting rings 3b are attached to and fixed on the outer side face of the straight pipe section 1 b. The outer edge of the end faces of the two ends of the rubber body 3 is provided with a convex fixing ring 3d, the fixing ring 3d is annular, and the fixing ring 3d is attached to the inner side face of the outer sleeve 2 and is fixed. The end faces of the two ends of the rubber body 3 are also provided with a protruding annular deformation ring 3c, the deformation ring 3c is located between the fixing ring 3d and the connecting ring 3b, and the surface of the deformation ring 3c is an arc surface. A second convex deformation ring 3e is arranged on the outer side surface of the inner end of the connecting ring 3b, and the outer side surface of the second deformation ring 3e is a cylindrical surface. And a first arc transition surface 3f is arranged between the outer side surface of the second deformation ring 3e and the surface of the first deformation ring 3 c. And a second arc transition surface 3g is arranged between the outer end surface of the second deformation ring 3e and the outer side surface of the connecting ring 3b, and the second arc transition surface 3g is connected with the outer side surface of the second deformation ring 3 e.

As shown in fig. 1 and 3, when the bushing assembly is mounted on a control arm, the connection sleeve 4 is generally integrally formed with the arm body 5 of the control arm, and after the inner sleeve 1, the rubber body 3 and the outer sleeve 2 are integrally formed, the inner sleeve 1, the rubber body 3 and the outer sleeve 2 are integrally inserted into the mounting hole 4a of the connection sleeve 4, so that the outer side surface of the outer sleeve 2 is attached to and fixed to the wall surface of the mounting hole 4 a.

The setting of the first deformation ring 3c and the first arc transition surface 3f increases the surface area of the 3 end faces of the rubber body, increases the elastic deformation amount of the 3 end faces of the rubber body, enables the end faces of the rubber body 3 to adapt to larger deformation, and simultaneously improves the structural strength through an arc structure, thereby reducing the possibility of the 3 end faces of the rubber body being damaged by breakage. And the setting of the second deformation ring 3e increases the radial thickness of the inner end of the connecting ring 3b, namely, the radial elastic deformation of the end surface of the rubber body 3 is increased, so that the end surface of the rubber body 3 can further adapt to larger deformation, and the possibility of the end surface of the rubber body 3 being damaged by cracking is further reduced. Therefore, the suspension bush assembly can improve the service life.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The suspension bush assembly comprises an inner sleeve (1), an outer sleeve (2) and a rubber body (3) arranged between the inner sleeve (1) and the outer sleeve (2), wherein the inner sleeve (1) comprises a convex section (1a) positioned in the middle and straight pipe sections (1b) positioned at two ends, the inner sleeve (1) is arranged in the outer sleeve (2) in a penetrating way, the two straight pipe sections (1b) extend out of the outer sleeve (2), the inner edges of the end surfaces at the two ends of the rubber body (3) are provided with convex annular connecting rings (3b), the connecting rings (3b) are attached to the outer side surfaces of the straight pipe sections (1b) and fixed, the outer edges of the end surfaces at the two ends of the rubber body (3) are provided with convex annular fixing rings (3d), the fixing rings (3d) are attached to the inner side surfaces of the outer sleeve (2) and fixed, and the suspension bush assembly is characterized in that the end surfaces at the two ends of the rubber body (3) are also provided with convex annular deformation rings (3c), the deformation ring I (3c) is located between the connecting ring (3b) and the fixing ring (3d), the surface of the deformation ring I (3c) is an arc surface, a convex deformation ring II (3e) is arranged on the outer side surface of the inner end of the connecting ring (3b), the outer side surface of the deformation ring II (3e) is a cylindrical surface, and an arc transition surface I (3f) is arranged between the outer side surface of the deformation ring II (3e) and the surface of the deformation ring I (3 c).

2. The suspension bushing assembly according to claim 1, wherein a second arc transition surface (3g) is provided between the outer end surface of the second deformable ring (3e) and the outer side surface of the connecting ring (3 b).

3. The suspension bushing assembly of claim 2, wherein the second circular arc transition surface (3g) is connected to an outer side surface of the second deformable ring (3 e).

4. The suspension bushing assembly according to any one of claims 1-3, wherein the protruding section (1a) is formed by protruding the sidewall of the inner sleeve (1), the outer side surface and the inner side surface of the protruding section (1a) are spherical, the inner side surface of the rubber body (3) is provided with a matching groove (3a) matched with the protruding section (1a), and the wall surface of the matching groove (3a) is abutted against the outer side surface of the protruding section (1a) and fixed.

5. Suspension bushing assembly according to claim 4, wherein the wall thickness of the bulge section (1a) is equal to the wall thickness of the straight tube section (1 b).

6. Suspension bushing assembly according to claim 5, wherein the bulge section (1a) and the straight tube section (1b) are in the transition of a circular arc.

7. The suspension bushing assembly according to any one of claims 1-3, further comprising a connecting sleeve (4), wherein the connecting sleeve (4) is provided with a mounting hole (4a), the outer sleeve (2) is inserted into the mounting hole (4a) and fixed, an identification groove (4b) is provided at a mouth edge of one end of the mounting hole (4a), one end of the outer sleeve (2) is located in the identification groove (4b), and the other end of the outer sleeve (2) extends out of the mounting hole (4 a).

8. Suspension bushing assembly according to claim 7, characterized in that a chamfer is provided between the outer side of the outer sleeve (2) and the end faces of both ends of the outer sleeve (2).