CN219191847U

CN219191847U - Bushing, automobile control arm and automobile

Info

Publication number: CN219191847U
Application number: CN202320249034.9U
Authority: CN
Inventors: 李龙; 武伟; 张秀峰; 孙伟; 管文华; 齐怀志
Original assignee: Nuobo Rubber Production Co Ltd
Current assignee: Nuobo Rubber Production Co Ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-16
Anticipated expiration: 2033-02-17

Abstract

The utility model provides a bushing, an automobile control arm and an automobile, wherein the bushing comprises an inner pipe, a middle pipe sleeved on the inner pipe, an outer pipe sleeved on the middle pipe, and elastic bodies connected between the inner pipe and the middle pipe and between the middle pipe and the outer pipe; the side of the middle tube facing the inner tube is bulged in the radial direction of the inner tube to form a first bulged part, and/or the side of the middle tube facing the outer tube is bulged in the radial direction of the inner tube to form a second bulged part. According to the bushing, the first arched part which bulges towards the direction of the inner pipe and the second arched part which bulges towards the direction of the outer pipe are formed on the middle pipe, so that the thickness of the elastic body between the inner pipe and the middle pipe and between the middle pipe and the outer pipe can be reduced respectively, the radial compression rigidity of the bushing is effectively improved, and the vibration under a large load can be absorbed.

Description

Bushing, automobile control arm and automobile

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a bushing. The utility model also relates to an automobile control arm provided with the bushing and an automobile provided with the automobile control arm.

Background

The suspension system is an important component part of a modern automobile, and has great influence on the running smoothness and the operation stability of the automobile. A Control arm (also called a swing arm) of a vehicle serves as a guiding and force transmitting element of a vehicle suspension system, transmitting various forces acting on the wheels to the vehicle body while ensuring that the wheels move in a trajectory.

The automobile control arm elastically connects the wheel and the automobile body together through ball joints or bushings respectively. The bushing arranged on the automobile control arm can attenuate the vibration transmitted to the automobile body from the road surface, so that the performance of noise reduction and vibration reduction is better, and the comfort level of passengers in riding is improved. However, the existing bushings provided on the control arms of automobiles are limited in their own structure, resulting in difficulty in suppressing radial impact under a large load, thereby resulting in poor reliability of the bushing in operation and limited vibration isolation capability.

Disclosure of Invention

In view of this, the present utility model aims to propose a bushing to facilitate the radial stiffness of the bushing.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the bushing comprises an inner pipe, a middle pipe sleeved on the inner pipe, an outer pipe sleeved on the middle pipe, and elastic bodies connected between the inner pipe and the middle pipe and between the middle pipe and the outer pipe;

the side of the middle tube facing the inner tube is bulged towards the inner tube along the radial direction of the inner tube to form a first bulged part, and/or the side of the middle tube facing the outer tube is bulged towards the outer tube along the radial direction of the inner tube to form a second bulged part.

Further, a first concave portion is formed on a side of the inner tube facing the middle tube, along a radial direction of the inner tube, in a direction away from the middle tube.

Further, the first concave portion is disposed corresponding to the first arch portion.

Further, the first arch part and the first concave part are arc-shaped, and the arc of the arch of the first arch part is the same as the arc of the concave of the first concave part.

Furthermore, the middle pipe is made of nylon.

Further, the elastic body forms a sheath for the two ends of the middle pipe along the axial direction of the inner pipe; the elastic bodies sleeved on the middle pipe along the two ends of the inner pipe in the axial direction are provided with a plurality of positioning grooves for the external clamp to prop against the middle pipe.

Further, rubber is adopted as the elastomer.

Further, the inner tube and/or the outer tube are/is extruded aluminum profiles.

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

according to the bushing, the first arched part which bulges towards the direction of the inner pipe and the second arched part which bulges towards the direction of the outer pipe are formed on the middle pipe, so that the thickness of the elastic body between the inner pipe and the middle pipe and between the middle pipe and the outer pipe can be reduced respectively, the radial compression rigidity of the bushing is effectively improved, and the vibration under a large load can be absorbed.

In addition, through making first hunch portion and first depressed part all be the arc, and make the radian that first hunch portion hunch was arched the same with the sunken radian of first depressed part, can promote the homogeneity of elastomer atress in each position department between well pipe and the inner tube to prolong its life.

In addition, a plurality of positioning grooves for the external clamp to prop against the middle pipe are formed in the elastic bodies sleeved on the two ends of the middle pipe along the axial direction of the inner pipe, so that the positioning of the middle pipe is conveniently realized in the vulcanization process of the elastic bodies.

Another object of the utility model is to propose an automotive control arm provided with a bushing as described above.

According to the automobile control arm, the bushing in the first embodiment is arranged, so that vibration transmitted to an automobile body from a road surface can be effectively damped.

The utility model also provides an automobile, and the automobile control arm is arranged on the automobile.

According to the automobile, the automobile control arm is arranged, so that the shock absorption and noise reduction performances of the automobile can be improved, and the comfort level of passengers in riding can be improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of a bushing according to an embodiment of the present utility model;

FIG. 2 is a front view of a bushing according to an embodiment of the utility model;

fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.

Reference numerals illustrate:

1. an inner tube; 101. a first concave portion; 2. a middle tube; 201. a first arch portion; 202. a second arch portion; 3. an outer tube; 4. an elastomer; 5. and a positioning groove.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The present embodiment relates to a bushing, which is integrally constituted by an inner tube 1, a middle tube 2 fitted over the inner tube 1, an outer tube 3 fitted over the middle tube 2, and an elastic body 4 connected between the inner tube 1 and the middle tube 2 and between the middle tube 2 and the outer tube 3. The side of the middle tube 2 facing the inner tube 1 is bulged in the direction of the inner tube 1 along the radial direction of the inner tube 1 to form a first bulged portion 201, and the side of the middle tube 2 facing the outer tube 3 is bulged in the direction of the outer tube 3 along the radial direction of the inner tube 1 to form a second bulged portion 202. In this way, the thickness of the elastic body 4 between the inner tube 1 and the middle tube 2 and between the middle tube 2 and the outer tube 3 can be reduced, thereby improving the radial compression rigidity of the bushing, improving the reliability of the bushing, and being beneficial to improving the vibration isolation capability of the bushing.

It should be noted that the above-mentioned arrangement of the first and

second arches

201 and 202 on the side of the middle tube 2 facing the inner tube 1 and the side facing the outer tube 3 is only a preferred embodiment, and the first arch 201 may be formed on the side of the middle tube 2 facing the inner tube 1, or the second arch 202 may be formed on the side of the middle tube 2 facing the outer tube 3, so that the radial compression rigidity of the bushing may be improved.

Based on the above overall description, as a preferred embodiment, as shown in fig. 1 to 3, in this embodiment, the inner tube 1, the middle tube 2 and the outer tube 3 are tubular structures sequentially arranged radially outward of the inner tube 1, and the elastic body 4 is connected between the inner tube 1 and the middle tube 2 and between the middle tube 2 and the outer tube 3, respectively.

As a further preferred embodiment, the side of the inner tube 1 facing the middle tube 2 is recessed in the radial direction of the inner tube 1 in a direction away from the middle tube 2 to form a first recessed portion 101. And the first concave part 101 corresponds to the first arched part 201, and the thickness dimension of the elastic body 4 between the middle pipe 2 and the inner pipe 1 along the radial direction of the inner pipe 1 can be ensured by the arrangement of the first concave part 101, so that the axial torsion stress of the elastic body 4 between the middle pipe 2 and the inner pipe 1 is reduced, the axial torsion rigidity of the bushing is further reduced, and the reliability of the bushing in operation is improved.

In addition, the provision of the first raised portion 201 and the first recessed portion 101 also increases the contact area between the elastic body 4 and the middle tube 2 and the inner tube 1. And as a preferred embodiment, as shown in fig. 3, the first arch 201 and the first concave portion 101 are both arc-shaped, and the arc of the first arch 201 is the same as the arc of the concave portion of the first concave portion 101. In this way, the uniformity of the stress of the elastic body 4 between the middle pipe 2 and the inner pipe 1 at each position can be improved, and the service life of the elastic body is prolonged. In particular, the middle tube 2 in this embodiment may be preferably made of nylon, and the middle tube 2 may be made by injection molding.

In addition, the second arched portion 202 may also be arc-shaped, and the arc of the second arched portion 202 may be designed according to the related requirements of the bushing during operation, which is not described herein.

As shown in fig. 1 and 3, the elastic body 4 constitutes a jacket of the center tube 2 along both axial ends of the inner tube 1. And a plurality of positioning grooves 5 for the external clamp to abut against the middle tube 2 are arranged on the elastic bodies 4 sleeved on the two ends of the middle tube 2 along the axial direction of the inner tube 1. In specific implementation, the positioning grooves 5 can be sequentially arranged along the circumferential direction of the middle pipe 2, and when the bushing is manufactured, the middle pipe 2 is abutted tightly by the external clamp, so that the positioning of the middle pipe 2 is realized, and the vulcanization molding of the elastic body 4 is facilitated. And the elastic body 4 in the present embodiment may preferably be rubber commonly used in the art. It should be noted that, the external fixture described in this embodiment may be an external fixture commonly used in the prior art for positioning the middle tube 2 during the vulcanization process of the elastomer 4, and will not be described herein.

In addition, the inner tube 1 and the outer tube 3 in this embodiment may be extruded aluminum profiles commonly used in the prior art, and the extruded aluminum profiles selected for the inner tube 1 and the outer tube 3 may be respectively machined to a certain extent, for example, the first concave portion 101 is machined on the inner tube 1, or the end portions in the axial direction of the inner tube 1 and the outer tube 3 are machined with structures commonly used in the prior art, such as chamfer angles.

In the bushing of the present embodiment, the thickness of the elastic body 4 between the inner pipe 1 and the middle pipe 2 and between the middle pipe 2 and the outer pipe 3 can be reduced by forming the first bulge 201 bulge in the direction of the inner pipe 1 and the second bulge 202 bulge in the direction of the outer pipe 3 on the middle pipe 2, so that the radial compression stiffness of the bushing is effectively improved, the vibration under a large load can be absorbed, and the working reliability and vibration isolation capability of the bushing can be improved.

Example two

The present embodiment relates to an automobile control arm provided with the bushing of the first embodiment. In addition, the present embodiment also relates to an automobile in which the automobile control arm as described above is provided.

The vehicle control arm according to the present embodiment can effectively damp vibrations transmitted from the road surface to the vehicle body by providing the bush according to the first embodiment. And the automobile of this embodiment through being provided with the automobile control arm as described above, can promote the shock attenuation of automobile, fall the noise performance, and then promote the comfort level of passenger when riding.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A bushing, characterized in that:

comprises an inner pipe (1), a middle pipe (2) sleeved on the inner pipe (1), an outer pipe (3) sleeved on the middle pipe (2), and an elastomer (4) connected between the inner pipe (1) and the middle pipe (2) and between the middle pipe (2) and the outer pipe (3);

the side of the middle tube (2) facing the inner tube (1) is bulged towards the inner tube (1) along the radial direction of the inner tube (1) to form a first bulged part (201), and/or the side of the middle tube (2) facing the outer tube (3) is bulged towards the outer tube (3) along the radial direction of the inner tube (1) to form a second bulged part (202).

2. A bushing according to claim 1, wherein:

a side of the inner tube (1) facing the middle tube (2) is recessed in a direction away from the middle tube (2) along a radial direction of the inner tube (1) to form a first recessed portion (101).

3. A bushing according to claim 2, wherein:

the first concave portion (101) is provided in correspondence with the first arch portion (201).

4. A bushing according to claim 3, wherein:

the first arched part (201) and the first concave part (101) are arc-shaped, and the arched radian of the first arched part (201) is the same as the concave radian of the first concave part (101).

5. A bushing according to claim 1, wherein:

the middle pipe (2) is made of nylon.

6. A bushing according to claim 1, wherein:

the elastic body (4) forms a sheath for the middle pipe (2) along the two axial ends of the inner pipe (1);

the elastic bodies (4) sleeved on the middle tube (2) along the two axial ends of the inner tube (1) are respectively provided with a plurality of positioning grooves (5) for the external clamp to prop against the middle tube (2).

7. A bushing according to claim 1, wherein:

the elastomer (4) is rubber.

8. A bushing according to claim 1, wherein:

the inner tube (1) and/or the outer tube (3) are extruded aluminum profiles.

9. An automobile control arm, characterized in that:

the automobile control arm is provided with a bushing according to any one of claims 1 to 8.

10. An automobile, characterized in that:

the automobile is provided with the automobile control arm as claimed in claim 9.