CN113550994A

CN113550994A - Combined lining

Info

Publication number: CN113550994A
Application number: CN202010337673.1A
Authority: CN
Inventors: 宰广骄; 方坤; 史国栋
Original assignee: Pullman Co
Current assignee: Pullman Co
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-10-26

Abstract

The application discloses modular bush includes: an outer frame (1) having a through-hole (1 a); a first elastic member (2) circumferentially wrapped around the exoskeleton (1); an inner skeleton (3); a second elastic member (4) circumferentially wrapped around the inner frame (3); the end part of the outer framework (1) is bent inwards to form a bent end (1b), and the bent end (1b) can be wrapped on the upper end surface and the lower end surface of the second elastic piece (4), so that the inner framework (2) can be fixedly arranged in the through hole (1a) through the second elastic piece (4). The utility model provides a combination formula bush can be according to the shape of demand optional exoskeleton and inner frame to can the first elastic component of optional and second elastic component material, thereby realize the independent assortment, with the purpose that satisfies different functional requirements such as different compression or different intensity, high damping or low damping.

Description

Combined lining

Technical Field

The invention relates to the field of bushing manufacturing, in particular to a combined bushing for a vehicle.

Background

With the rapid development of the automobile industry, in order to shorten the design time and reduce the production cost, the modularization of automobile parts becomes a trend.

A bush for vehicle can produce a large amount of compound operating modes in the driving process of vehicle, but the inner frame and the exoskeleton of present common bush can only adopt fixed cooperation mode, adopt shape matching's inner frame and exoskeleton can only assemble into complete bush promptly, can not make up wantonly between the above-mentioned part that is not general.

The bushing can only meet one or more of technical parameters such as rigidity and damping, but cannot meet the complex requirements of a vehicle in the driving process, and the performance surface of the product is single, so that the increasingly high requirements of consumers on vehicle comfort, controllability and the like are difficult to meet.

Disclosure of Invention

In view of the problems of the background art, the present invention provides a composite bushing, comprising:

an outer frame having a through hole;

the first elastic piece is circumferentially coated on the outer framework;

an inner skeleton;

the second elastic piece is circumferentially coated on the inner framework;

the end part of the outer framework is bent inwards to form a bent end, and the bent end can be wrapped on the upper end surface and the lower end surface of the second elastic piece, so that the inner framework can be fixedly arranged in the through hole by virtue of the second elastic piece.

The outer skeleton and the inner skeleton of the combined bushing provided by the invention can be designed into any shape. During manufacturing, only the shapes of the first elastic element and the second elastic element need to be considered, and particularly, the second elastic element can be arranged in the through hole of the outer framework and fixed by the bent end. Therefore, the combined bushing has more combination ways so as to meet different functional requirements (for example, different technical parameters).

In some embodiments of the present invention, a diameter of the second elastic member is equivalent to a diameter of the through hole, so that the outer bobbin and the inner bobbin can be clearance-fitted with a high precision in a thickness of the second elastic member.

The combined bushing can absorb the vibration generated by bumping of vehicles with uneven road surfaces to the maximum by utilizing the low torque performance of the combined bushing, and improves the driving comfort. In addition, the combined bushing improves the stress distribution state of the rubber elastic part, reduces the shearing stress and prolongs the service life of the elastic part (particularly the rubber part).

In some embodiments of the invention, the first elastic member and the second elastic member are made of the same or different materials.

In some embodiments of the invention, the first and second elastic members are made of rubber having the same or different performance parameters; the first elastic piece and the outer framework are vulcanized and molded through a rubber vulcanization process; the second elastic piece and the inner framework are vulcanized and molded through a rubber vulcanization process.

Based on the structure, the combined bushing can freely select the materials of the first elastic part and the second elastic part, or adopt rubbers with different performance parameters, thereby achieving the purposes of different compression or different strength, high damping or low damping and the like for different use requirements.

In some embodiments of the present invention, the bent end and the second elastic member may be connected to each other in a riveting manner.

In some embodiments of the present invention, the portions of the exoskeleton and the second elastic member that are in contact with each other are coated with a lubricating coating.

In some embodiments of the invention, the lubricious coating is a very low coefficient of friction (lubricious), wear resistant, non-stick material and the lubricious coating is teflon (PTFE).

In some embodiments of the invention, the outer skeleton and the inner skeleton are both made of metal

Drawings

Fig. 1 is a schematic structural view of a combined outer frame and a first elastic member of a composite bushing according to an embodiment of the present invention;

FIG. 2 is a schematic view of the assembled liner according to an embodiment of the present invention after the inner frame and the second elastic member are assembled;

FIG. 3 is a schematic view of the assembly of a modular liner according to one embodiment of the present invention;

fig. 4 is an assembly view of a modular liner according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

As shown in fig. 1 to 3, the combined bushing provided by the present embodiment includes an outer frame 1, a first elastic member 2, an inner frame 3 and a second elastic member 4. The exoskeleton 1 has a through-hole 1 a. The first elastic element 2 circumferentially covers the outer wall of the outer frame 1. The second elastic member 4 circumferentially covers the inner frame 3. The end of the outer frame 1 is bent inward to form a bent end 1b, and the bent end 1b can be wrapped on the upper and lower end faces of the second elastic member 4, that is, the inner frame 3 can be fixedly disposed in the through hole 1a by the second elastic member 4.

In this embodiment, the outer frame 1 has a tubular structure, and the first elastic member 2 also has a tubular structure capable of covering the outer frame 1. The bent end 1b is formed at the end of the tubular exoskeleton 1, i.e., the exoskeleton 1 forms a cuff inward in the circumferential direction thereof at the end. The inner frame 3 is in a column shape, and the second elastic element 4 can be wrapped on the tubular structure of the inner frame 3.

Based on the above structure, the outer bobbin 1 may be designed in an arbitrary shape, and the inner bobbin 3 may also be designed in an arbitrary shape. It is only necessary that the second elastic member 4 be disposed in the through hole 1a of the outer frame 1 and fixed by the bent end 1 b. It will be appreciated by those skilled in the art that in this configuration, the materials of the first and second elastic members can be freely selected (and can be made of the same or different materials, for example, the first elastic member 2 is made of plastic, the second elastic member 4 is made of rubber, or both the first elastic sheet 2 and the second elastic member 4 are made of rubber). Therefore, the purposes of different compression or different strength, high damping or low damping and the like for different use requirements can be realized.

Further, in the present embodiment, the diameter of the second elastic member 4 and the diameter of the through hole 1a are substantially equivalent to each other, so that the outer frame 1 and the inner frame 3 can be clearance fitted with high precision by the thickness of the second elastic member 4.

The combined bushing can maximally absorb the vibration generated by bumping of vehicles with uneven road surfaces by utilizing the low torque performance of the combined bushing, and improves the driving comfort. In addition, the combined bushing improves the stress distribution state of the rubber elastic part, reduces the shearing stress and prolongs the service life of the elastic part (particularly the rubber part).

Further, the first elastic member 2 and the second elastic member 4 may be made of rubber having the same or different performance parameters. The first elastic member 2 and the outer wall of the exoskeleton 1 are vulcanized and molded through a rubber vulcanization process (using an existing rubber vulcanization process). The second elastic member 4 and the outer wall of the inner frame 3 are vulcanized and molded by a rubber vulcanization process.

The outer bobbin 1 and the inner bobbin 3 may be made of metal.

In this embodiment, the bent end 1b and the second elastic member 4 can be regarded as overlapping, so that the second elastic member 4 is fixed in the through hole 1 a. Furthermore, the bent end 1b and the second elastic member 4 can be fixedly connected to each other in a riveting manner (which may be a forward riveting or a reverse riveting).

In the present embodiment, as shown in fig. 3, a lubricating coating (self-lubricating) is applied to the portion where the second elastic member 4 and the exoskeleton 1 are attached to each other, and the lubricating coating may be teflon.

In another embodiment, as shown in fig. 4, the inner frame 3 of the composite bushing does not represent a single cylinder but adopts a more complicated structure, but the shape of the through-hole 1a of the outer frame 1 is not substantially changed, so that the inner frame 2 and the outer frame 1 can be coupled to each other by means of a second elastic member 4 corresponding to the shape of the through-hole 1 a. In the embodiment shown in fig. 4, the thickness of the second elastic element 4 is very thin, and the bending degree of the bending end 1b is smaller than that of the bending end 1b of the embodiment shown in fig. 1 to 3.

It will be understood by those skilled in the art that the shape of the through hole 1a of the outer bobbin 1 may be changed, and only the shape of the second elastic member 4 is changed accordingly, that is, it is sufficient that the second elastic member 4 can be disposed in the through hole 1a and fixed by the bent end 1b without changing the shape of the inner bobbin 2.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and are not limitative. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A modular liner, comprising:

an outer frame (1) having a through-hole (1 a);

a first elastic member (2) circumferentially wrapped around the exoskeleton (1);

an inner skeleton (3);

a second elastic member (4) circumferentially wrapped around the inner frame (3);

the end part of the outer framework (1) is bent inwards to form a bent end (1b), and the bent end (1b) can be wrapped on the upper end surface and the lower end surface of the second elastic piece (4), so that the inner framework (2) can be fixedly arranged in the through hole (1a) through the second elastic piece (4).

2. The modular liner of claim 1 wherein:

the diameter of the second elastic piece (4) is equivalent to that of the through hole (1a), so that the outer frame (1) and the inner frame (2) can be in clearance fit with the thickness of the second elastic piece (4).

3. The modular liner of claim 1 wherein:

the first elastic part (2) and the second elastic part (4) are made of the same or different materials.

4. The modular liner of claim 3 wherein:

the first elastic part (2) and the second elastic part (4) are made of rubber with the same or different performance parameters;

the first elastic piece (2) and the outer framework (1) are vulcanized and molded through a rubber vulcanization process;

the second elastic piece (4) and the inner framework (3) are vulcanized and molded through a rubber vulcanization process.

5. A modular bushing according to any of claims 1-4, wherein:

the bent end (1b) and the second elastic member (4) can be connected to each other by caulking.

6. A modular bushing according to any of claims 1-4, wherein:

and the parts, which are mutually attached, of the outer framework (1) and the second elastic piece (4) are coated with lubricating coatings.

7. The modular liner of claim 6 wherein:

the lubricating coating is made of Teflon.

8. A modular bushing according to any of claims 1-4, wherein:

the outer framework (1) and the inner framework (2) are both made of metal.