CN115158468A

CN115158468A - Rubber bushing and vehicle

Info

Publication number: CN115158468A
Application number: CN202211082801.8A
Authority: CN
Inventors: 王朝; 张秀峰; 崔香玉; 武伟; 管文华; 孙伟
Original assignee: Nobo Automobile Rubber And Plastic Anhui Co ltd; Nuobo Rubber Production Co Ltd
Current assignee: Nobo Automobile Rubber And Plastic Anhui Co ltd; Nuobo Rubber Production Co Ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-10-11
Anticipated expiration: 2042-09-06
Also published as: CN115158468B

Abstract

The invention provides a rubber bushing and a vehicle, the rubber bushing comprises a bushing main body and a sleeve sleeved outside the bushing main body, the bushing main body comprises an inner pipe, an outer pipe and a rubber body connected with the inner pipe and the outer pipe, the sleeve is sleeved on the outer pipe, and the outer pipe and the sleeve are both arranged oppositely. And, in the natural state of the rubber bush, there is a gap between the two outer pipes and between the two sleeves, or there is no gap between the two outer pipes, there is a gap between the two sleeves, and in the assembled state of the rubber bush, the two sleeves abut together, and the gap between the two outer pipes is reduced or the two outer pipes abut together. According to the rubber bushing disclosed by the invention, in an assembly state, the sleeve pipe is pressed against the outer pipe along the axial direction, the two sleeve pipes are abutted together, and the gap between the two outer pipes is reduced or abutted together, so that the rubber bushing has better axial rigidity.

Description

Rubber bushing and vehicle

Technical Field

The invention relates to the technical field of vehicle parts, in particular to a rubber bushing, and meanwhile, the invention also relates to a vehicle with the rubber bushing.

Background

A subframe mounted on a lower portion of a vehicle body is generally assembled with a power train of an engine and a transmission, and a suspension is mounted, and a flexible connection between the subframe and the vehicle body is generally achieved using a bush. Among them, the bush is mainly used for damping engine mount vibration transmitted into a cab and vibration caused by road jolt, and also for supporting the weight of a vehicle body and restricting displacement of the vehicle body. The axial rigidity of the existing bushing is mainly provided by the rubber body in a free state, and the axial rigidity is small.

Disclosure of Invention

In view of the above, the present invention is directed to a rubber bushing, which can have a large axial stiffness.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a rubber bushing comprises a bushing main body and a sleeve sleeved outside the bushing main body;

the bushing main body comprises an inner pipe, an outer pipe and a rubber body for connecting the inner pipe and the outer pipe, the sleeve is sleeved on the outer pipe, and the outer pipe and the sleeve are oppositely arranged;

in the natural state of the rubber bushing, gaps are formed between the two outer pipes and between the two sleeves, or no gap is formed between the two outer pipes, gaps are formed between the two sleeves, in the assembling state of the rubber bushing, the two sleeves are abutted together, and the gaps between the two outer pipes are reduced or the two outer pipes are abutted together.

Furthermore, the rubber body has the main muscle of connection, the inner tube with the outer tube passes through the main muscle of connection links to each other, just the main muscle of connection is for following a plurality of the circumference interval arrangement of bush main part.

Further, the rubber body has a plurality of spacing muscle, spacing muscle is connected on the inner tube, and can with the sleeve pipe with the outer tube butt, and the restriction the sheathed tube axial displacement with the radial displacement of outer tube, just spacing muscle with connect the owner muscle to follow the circumference of bush main part sets up in turn.

Furthermore, the end of the outer pipe is provided with a flange abutted against the main connecting rib, and the sleeve is provided with an abutting part abutted against the flange.

Furthermore, the inner pipe is provided with a first lug embedded into the connecting main rib, and/or the inner pipe is provided with a second lug embedded into the limiting rib.

Furthermore, the part of each outer tube, which is opposite to the main connecting rib, is provided with a notch, and the notches on the two outer tubes, which are opposite to the same main connecting rib, are arranged oppositely.

Furthermore, two sleeve pipes are respectively provided with a limiting surface which can be abutted against the end part of the limiting rib.

Furthermore, both ends of the inner tube extend out of the sleeve, and the rubber body extends to the end part of the inner tube.

Further, the outer tube is made of nylon.

Compared with the prior art, the invention has the following advantages:

according to the rubber bushing, the outer pipe and the sleeve are arranged oppositely, a gap is formed between the two outer pipes and the two sleeves in a natural state, or no gap is formed between the two outer pipes and a gap is formed between the two sleeves, so that the sleeves can be pressed against the outer pipes along the axial direction in an assembly state, the gap between the two outer pipes is reduced or the two outer pipes are abutted together, and the rubber bushing has good axial rigidity.

In addition, the plurality of main connecting ribs are arranged at intervals in the circumferential direction of the bushing main body, so that the firmness of connection between the inner pipe and the outer pipe can be improved. Set up a plurality of spacing muscle, can improve the spacing effect to sleeve pipe and outer tube. The end of the outer pipe is provided with the flanging abutted to the main connecting rib, and the sleeve is provided with the abutting part abutted to the flanging, so that the axial rigidity of the rubber bushing can be further improved. The first lug and/or the second lug are/is arranged on the inner pipe, so that the axial rigidity of the rubber bushing is improved.

In addition, the part of the outer pipe, which is opposite to the main connecting rib, is provided with the notch, so that the rigidity of the rubber bushing can be adjusted by changing the size of the notch. The sleeve is provided with a limiting surface abutted with the end part of the limiting rib, so that the limiting effect on the sleeve is improved.

Another object of the invention is to propose a vehicle in which a rubber bushing as described above is provided.

Compared with the prior art, the vehicle and the rubber bushing have the same beneficial effects, and are not repeated herein.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a rubber bushing according to an embodiment of the present invention in an assembled state;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural view of a bushing body according to an embodiment of the present invention;

FIG. 5 is a schematic view of a bushing body according to an embodiment of the present invention from another perspective;

FIG. 6 is a schematic view of a bushing body according to an embodiment of the present invention from another perspective;

FIG. 7 is a schematic structural view of an inner tube according to an embodiment of the present invention;

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a top view of FIG. 8;

FIG. 10 is a view showing an assembled state of an inner tube and a rubber body according to an embodiment of the present invention;

FIG. 11 is a view showing an assembled state of the inner tube and the rubber body at another angle according to the embodiment of the present invention;

FIG. 12 is a schematic structural view of an outer tube according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of an outer tube according to an embodiment of the present invention from another perspective;

FIG. 14 is a schematic structural diagram of a bushing according to an embodiment of the present invention;

fig. 15 is a cross-sectional view of a cannula according to an embodiment of the present invention.

Description of reference numerals:

1. an inner tube; 2. a rubber body; 3. a sleeve; 4. an outer tube;

101. a first bump; 102. a second bump;

201. limiting ribs; 202. connecting main ribs;

301. a limiting surface; 302. an abutting portion;

401. flanging; 402. and (6) opening.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a rubber bushing, which comprises a bushing main body and a sleeve 3 sleeved outside the bushing main body.

Wherein, the bush main part includes inner tube 1, outer tube 4 to and connect the rubber body 2 of inner tube 1 and outer tube 4, and sleeve pipe 3 cover is established on outer tube 4, and outer tube 4 and sleeve pipe 3 are two of relative arrangement. And, in the natural state of the rubber bushing, there is a gap between the two outer tubes 4 and between the two sleeves 3, or there is no gap between the two outer tubes 4 and there is a gap between the two sleeves 3, and in the assembled state of the rubber bushing, the two sleeves 3 are abutted together, and the gap between the two outer tubes 4 is reduced or the two outer tubes 4 are abutted together.

In the rubber bushing of the embodiment, the outer tube 4 and the sleeve 3 are both arranged oppositely, and in a natural state, a gap is formed between the two outer tubes 4 and the two sleeves 3, or no gap is formed between the two outer tubes 4 and a gap is formed between the two sleeves 3, so that in an assembly state, the sleeve 3 can be pressed against the outer tubes 4 along the axial direction, and the gap between the two outer tubes 4 is reduced or abutted together, so that the rubber bushing has better axial rigidity.

Based on the above general description, an exemplary structure of the rubber bushing of the present embodiment is shown in the state of referring to fig. 1 to 3, and has an overall cylindrical shape, both ends of the inner tube 1 protrude outside the sleeve 3, and the rubber body 2 extends to the end of the inner tube 1. The structure of the bushing main body is shown in fig. 4 to 6, fig. 4 is a schematic view of the bushing main body in a natural state, fig. 5 is a schematic view of the bushing main body in an assembled state, the bushing main body is integrally in a left-right symmetrical and up-down symmetrical structure, the two sleeves 3 and the two outer pipes 4 have the same structure, and only one of the sleeves 3 and the outer pipe 4 will be described below as an example.

The inner tube 1 of the present embodiment is structured as shown in fig. 7 to 9, and is formed with a connection hole penetrating in the axial direction of the inner tube 1, and the subframe is connected to the vehicle body by a bolt inserted into the connection hole. To improve the axial rigidity of the rubber bush, as shown in fig. 8, a first projection 101 embedded in a below-described joint bead 202 is provided on the inner pipe 1. The first projection 101 is provided at a middle portion in the axial direction of the inner tube 1, and has a substantially rectangular shape. As a further embodiment, as shown in fig. 7 and 8, a second projection 102 is further provided on the inner tube 1 to be embedded in a below-described stopper rib 201, and the second projection 102 is also provided at the middle portion in the axial direction of the inner tube 1.

As a specific implementation manner, the first bump 101 and the second bump 102 of the present embodiment are two bumps that are arranged oppositely, and the first bump 101 and the second bump 102 are alternately arranged along the circumferential direction of the inner tube 1. The specific number and arrangement form of the first protrusions 101 and the second protrusions 102 may be arranged according to the arrangement form of the connecting main rib 202 and the limiting rib 201, which will be described below, and is not limited herein.

The structure of the rubber body 2 is shown in fig. 10, a radially protruding main connecting rib 202 is provided on the rubber body 2, and the inner pipe 1 and the outer pipe 4 are connected by the main connecting rib 202. In order to further improve the using effect, as shown in fig. 10 and fig. 11, the outer wall of the main connecting rib 202 is an arc-shaped surface, and the end surface of the outer wall close to one end of the inner tube 1 is inclined outwards, so that the sleeve 3 has a better abutting effect on the main connecting rib 202, and the axial rigidity of the rubber bushing can be improved.

In this embodiment, for the convenience of manufacturing, the main connecting ribs 202 respectively connected with the two outer tubes 4 are overlapped in the circumferential direction of the bushing main body and arranged along the axial direction of the bushing main body at intervals, so that a large gap is formed between the two main connecting ribs 202 arranged at intervals, and when the sleeve 3 is sleeved, the two outer tubes 4 are close to each other. In order to further improve the connection firmness, the main connecting ribs 202 connected to the outer pipes 4 are all arranged in a plurality at intervals along the circumferential direction of the bushing main body, for example, the main connecting ribs 202 may be set as two oppositely arranged ribs, and of course, the number of the main connecting ribs 202 may be adjusted according to the specific situation.

In addition, the rubber body 2 has a plurality of limiting ribs 201, the limiting ribs 201 are connected to the inner pipe 1 and can be abutted to the sleeve 3 and the outer pipe 4 to limit the axial displacement of the sleeve 3 and the radial displacement of the outer pipe 4, and the limiting ribs 201 and the connecting main ribs 202 are alternately arranged along the circumferential direction of the bushing main body. As shown in fig. 10, as an exemplary structure, the limiting rib 201 of the present embodiment is substantially rectangular, and the height thereof is smaller than the connecting main rib 202, and specifically, two, and of course, the number thereof can be adjusted according to design requirements.

Here, it should be noted that, based on the machining process, a thin-walled structure as shown in fig. 10 is generally molded outside the stopper rib 201. In addition, instead of embedding the first bump 101 in each connecting main rib 202 and embedding the second bump 102 in each limiting rib 201, the first bump 101 may be embedded only in a part of the connecting main rib 202 and the second bump 102 may be embedded in a part of the limiting rib 201.

The outer pipe 4 of the present embodiment is specifically made of nylon to reduce the weight of the bushing main body, and the structure of the outer pipe 4 is, as shown in fig. 12 and 13, circular ring-shaped as a whole, and a flange 401 abutting against the connecting main rib 202 is provided at the end of the outer pipe 4. Specifically, the two flanges 401 are provided corresponding to the connecting main ribs 202 one by one. Through setting up turn-ups 401 and first lug 101, can have better spacing effect in rubber bush's axial, be favorable to promoting rubber bush's axial rigidity.

In addition, as shown in fig. 5 and 12, the portion of each outer tube 4 facing the main connecting rib 202 is provided with a notch 402, and the notches 402 facing the same main connecting rib 202 on the two outer tubes 4 are arranged oppositely, so that the rigidity of the rubber bushing can be adjusted by changing the size of the notch 402. Here, it should be noted that the gap between the two outer pipes 4 may be changed according to design requirements, and is not limited in particular, and the axial stiffness of the rubber bushing may be adjusted by adjusting the gap between the two outer pipes 4 during manufacturing, and the gap between the two outer pipes 4 may be adjusted to be zero at minimum.

The sleeve 3 of this embodiment is made of metal, so that the rubber bush has a large pressing force. The sleeve 3 is constructed as shown in fig. 14 and 15, and has a sleeve portion fitted over the outer tube 4 and an overhanging portion extending beyond the outer tube 4. Between the sleeve portion and the overhanging portion, a stopper surface 301 capable of abutting on an end of the stopper rib 201 and an abutting portion 302 abutting on the burring 401 are provided. The abutting portion 302 is a abutting surface, and the abutting surface and the limiting surface 301 are arranged in a staggered manner. Further, based on the structure of the rubber body 2, the stopper surface 301 and the abutment surface of the present embodiment are two surfaces that are provided at intervals and are alternately arranged in the circumferential direction of the sleeve 3.

The rubber bush of this embodiment, under natural state, can with two sleeve pipes 3 suit respectively the outer tube 4 outside, also can separate two sleeve pipes 3 and outer tube 4. During assembly, the bottom sleeve 3 can be first installed in the mounting hole of the subframe, then the bushing body is inserted into the sleeve 3, and finally the top sleeve 3 is pressed into the outer tube 4 by a press-fitting machine. In the press fitting process, the sleeve 3 can be pressed against the outer tube 4 and the rubber body 2, and the gap between the two outer tubes 4 is reduced until the two sleeves 3 are pressed against each other.

In the rubber bushing of the present embodiment, by providing the flange 401 on the outer tube 4, providing the first protrusion 101 on the inner tube 1, and sleeving the sleeve 3 outside the outer tube 4, in an assembled state, a large pressure can be applied to the rubber body 2 in the axial direction of the rubber bushing, so that the rubber bushing can have a high axial stiffness.

Furthermore, the present embodiment also relates to a vehicle in which the rubber bushing as described above is provided. The vehicle of this embodiment is through adopting as above rubber bush, because of rubber bush has great axial rigidity to can promote the riding comfort of whole car.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A rubber bushing characterized by:

comprises a lining main body and a sleeve (3) sleeved outside the lining main body;

the bushing main body comprises an inner pipe (1), an outer pipe (4) and a rubber body (2) for connecting the inner pipe (1) and the outer pipe (4), the sleeve (3) is sleeved on the outer pipe (4), and the outer pipe (4) and the sleeve (3) are both arranged oppositely;

in a natural state of the rubber bushing, gaps are formed between the two outer pipes (4) and between the two sleeves (3), or no gap is formed between the two outer pipes (4), and a gap is formed between the two sleeves (3);

in the assembled state of the rubber bushing, the two sleeves (3) abut together, and the gap between the two outer tubes (4) is reduced or the two outer tubes (4) abut together.

2. The rubber bushing of claim 1, wherein:

the rubber body (2) is provided with a main connecting rib (202), the inner pipe (1) and the outer pipe (4) are connected through the main connecting rib (202), and the main connecting rib (202) is a plurality of ribs arranged along the circumferential direction of the bushing main body at intervals.

3. The rubber bushing of claim 2, wherein:

the rubber body (2) is provided with a plurality of limiting ribs (201), the limiting ribs (201) are connected to the inner pipe (1) and can be abutted against the sleeve (3) and the outer pipe (4) to limit axial displacement of the sleeve (3) and radial displacement of the outer pipe (4), and the limiting ribs (201) and the connecting main ribs (202) are alternately arranged along the circumferential direction of the bushing main body.

4. The rubber bushing of claim 2, wherein:

the end of the outer pipe (4) is provided with a flanging (401) which is abutted to the main connecting rib (202), and the sleeve (3) is provided with an abutting part (302) which is abutted to the flanging (401).

5. The rubber bushing of claim 3, wherein:

the inner pipe (1) is provided with a first convex block (101) embedded into the connecting main rib (202), and/or the inner pipe (1) is provided with a second convex block (102) embedded into the limiting rib (201).

6. The rubber bushing of claim 2, wherein:

the parts, facing the main connecting ribs (202), of the outer pipes (4) are provided with notches (402), and the notches (402) facing the same main connecting ribs (202) on the two outer pipes (4) are arranged oppositely.

7. The rubber bushing of claim 3, wherein:

two be equipped with respectively on sleeve pipe (3) can with spacing face (301) of the tip butt of spacing muscle (201).

8. The rubber bushing of claim 1, wherein:

both ends of the inner tube (1) extend out of the sleeve (3), and the rubber body (2) extends to the end part of the inner tube (1).

9. The rubber bushing according to any one of claims 1 to 8, wherein:

the outer tube (4) is made of nylon.

10. A vehicle, characterized in that:

the vehicle is provided with the rubber bushing according to any one of claims 1 to 9.