CN214888383U

CN214888383U - Bushing inner pipe, bushing outer pipe and bushing

Info

Publication number: CN214888383U
Application number: CN202023171612.7U
Authority: CN
Inventors: 张兵舰; 赵鑫
Original assignee: Evergrande New Energy Automobile Investment Holding Group Co Ltd
Current assignee: Evergrande New Energy Automobile Investment Holding Group Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-11-26
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a machine part discloses a bush inner tube, bush outer tube and bush, wherein, bush inner tube (10) have outer wall and level and smooth inner wall, be provided with first sunken (11) and/or first arch on the outer wall. The first recess and/or the first bulge are/is arranged on the inner bushing pipe, so that axial deformation limitation can be provided between the inner bushing pipe and the outer bushing pipe, the axial rigidity of the bushing is improved, and the axial-radial rigidity ratio of the bushing is improved.

Description

Bushing inner pipe, bushing outer pipe and bushing

Technical Field

The utility model relates to a machine parts, concretely relates to bush inner tube, bush outer tube and bush.

Background

Bushings are common mechanical parts that may be used, for example, in the suspension of an electric motor for a vehicle. The liner is typically constructed of an inner liner tube, an outer liner tube, and a gel between the inner and outer liner tubes. Among other things, since the outer liner tube is typically a thin-walled tube, the overall stiffness of the liner may be insufficient in certain applications.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bush inner tube in order to overcome the not enough problem of bush rigidity that prior art exists to improve the rigidity of bush.

In order to achieve the above object, an aspect of the present invention provides a bushing inner tube, wherein the bushing inner tube has an outer wall and a smooth inner wall, and the outer wall is provided with a first recess and/or a first protrusion.

Optionally, the outer wall of the inner pipe of the bushing is provided with a plurality of first recesses and/or first protrusions.

Optionally, the first recess and/or the first protrusion are/is arranged in the middle of the length of the inner pipe of the bushing; and/or a plurality of the first recesses and/or the first protrusions are distributed along the circumferential direction of the inner pipe of the bushing.

Optionally, the first recess is a structure which tapers inward in the radial direction of the inner pipe of the bushing; and/or the first bulge is a structure which is tapered outwards along the radial direction of the inner pipe of the bushing.

Through the technical scheme, the first recess and/or the first protrusion are/is arranged on the inner pipe of the bushing, so that the axial deformation limit can be provided between the inner pipe of the bushing and the outer pipe of the bushing, the axial rigidity of the bushing is improved, and the axial-radial rigidity ratio of the bushing is improved.

The application also provides a bushing outer pipe, wherein, the bushing outer pipe has inner wall and smooth outer wall, be provided with second arch and/or second sunken on the inner wall.

Optionally, the inner wall of the outer bushing pipe is provided with a plurality of second protrusions and/or second recesses.

Optionally, the second protrusion and/or the second recess are/is arranged in the middle of the length of the bushing outer tube; and/or a plurality of second protrusions and/or second recesses are distributed along the circumferential direction of the bushing outer pipe.

Optionally, the second protrusion is a structure that tapers inward in the radial direction of the bushing outer tube; and/or the second recess is a structure which is tapered outwards along the radial direction of the bushing outer pipe.

Optionally, the bushing outer tube is a nylon glass fiber composite injection molding.

The second bulge and/or the second recess are/is arranged on the bushing outer pipe, so that axial deformation limitation can be provided between the bushing inner pipe and the bushing outer pipe, the axial rigidity of the bushing is improved, and the axial-radial rigidity ratio of the bushing is improved.

The application further provides a bushing, wherein, the bushing includes the bushing inner tube of this application, the bushing outer tube of this application and sets up the bushing inner tube with the colloid between the bushing outer tube, the bushing inner tube with the bushing outer tube sets up with make first protruding with the second is sunken to correspond and/or first sunken with the second is protruding to correspond the mode.

Through the technical scheme, the colloid, the inner bushing pipe and the outer bushing pipe form an axial limiting structure which is mutually jointed, so that axial deformation limitation can be provided between the inner bushing pipe and the outer bushing pipe, the axial rigidity of the bushing is improved, and the axial-radial rigidity ratio of the bushing is improved.

Drawings

FIG. 1 is a perspective view illustrating one embodiment of a bushing of the present application;

FIG. 2 is a perspective view of the inner tube of the bushing of FIG. 1;

FIG. 3 is a perspective view of the outer tube of the bushing of FIG. 1;

fig. 4 is a cross-sectional view of fig. 1.

Description of the reference numerals

10-inner bushing pipe, 11-first recess, 20-outer bushing pipe, 21-second projection and 30-colloid.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to an aspect of the present application, a liner inner tube is provided, wherein the liner inner tube 10 has an outer wall and a smooth inner wall, the outer wall being provided with first recesses 11 and/or first protrusions.

By providing the first recess 11 and/or the first protrusion on the liner inner tube 10, an axial deformation limit can be provided between the liner inner tube 10 and the liner outer tube 20, thereby increasing the axial stiffness of the liner and simultaneously increasing the axial-radial stiffness ratio of the liner.

Specifically, the first recess 11 may be provided only on the liner inner pipe 10, the first protrusion may be provided only on the liner inner pipe 10, or the first recess 11 and the first protrusion may be provided on the liner inner pipe 10. In either form, an axial deformation limit may be provided between the liner inner tube 10 and the liner outer tube 20, thereby increasing the axial stiffness to axial radial stiffness ratio of the liner.

In addition, the outer wall of the inner tube 10 of the bushing may be provided with a plurality of the first recesses 11 and/or first protrusions to provide axial deformation stops at different positions of the bushing. Wherein, a plurality of first recesses 11 (as shown in fig. 2), or a plurality of first protrusions, or a plurality of first recesses 11 and a plurality of first protrusions may be provided on the liner inner pipe 10.

The position of the first recess 11 and/or the first protrusion may be set according to the position where the stiffness needs to be enhanced. Preferably, the first recess 11 and/or the first protrusion are provided in the middle of the length of the liner inner tube 10. In addition, in order to provide a uniform axial deformation limit in the circumferential direction of the bushing, a plurality of the first recesses 11 and/or the first protrusions may be distributed in the circumferential direction of the bushing inner tube 10. It will be appreciated that the first recesses 11 and/or the first protrusions may be provided in a plurality of sets, each set being distributed along the same circumference of the liner inner tube 10.

In addition, the shape of the first recess 11 and/or the first protrusion may be set as required, and preferably, the first recess 11 is a structure that tapers inward in the radial direction of the liner inner pipe 10; and/or the first protrusion is a structure which is tapered outwards along the radial direction of the inner pipe 10 of the bushing so as to provide an axial deformation limit similar to engagement. For example, in the embodiment shown in fig. 2 and 4, the first recess 11 has a tapered structure.

In the present application, the liner inner tube 10 may be made of various suitable materials, such as a metal material (e.g., steel, aluminum) cast.

According to another aspect of the present application, there is provided a liner outer tube, wherein the liner outer tube 20 has an inner wall and a smooth outer wall, and the inner wall is provided with a second protrusion 21 and/or a second recess.

By providing the second protrusion 21 and/or the second recess on the liner outer tube 20, an axial deformation limit can be provided between the liner inner tube 10 and the liner outer tube 20, thereby increasing the axial stiffness of the liner and simultaneously increasing the axial-radial stiffness ratio of the liner.

Specifically, the second protrusion 21 may be provided only on the liner outer tube 20, the second recess may be provided only on the liner outer tube 20, or the second protrusion 21 and the second recess may be provided on the liner outer tube 20. In either form, an axial deformation limit may be provided between the liner inner tube 10 and the liner outer tube 20, thereby increasing the axial stiffness to axial radial stiffness ratio of the liner.

In addition, a plurality of said second protrusions 21 and/or second recesses may be provided on the inner wall of the liner outer tube 20 to provide axial deformation stops at different positions of the liner. Wherein a plurality of second protrusions 21 (as shown in fig. 3), or a plurality of second recesses, or a plurality of second protrusions 21 and a plurality of second recesses may be provided on the liner outer tube 20.

The position of the second protrusion 21 and/or the second recess may be set according to the position where the stiffness needs to be enhanced. Preferably, the second protrusion 21 and/or the second recess are provided in the middle of the length of the liner outer tube 20. In addition, in order to provide a uniform axial deformation limit in the circumferential direction of the liner, a plurality of the second protrusions 21 and/or second recesses may be distributed in the circumferential direction of the liner outer tube 20. It will be appreciated that the second projections 21 and/or second recesses may be provided in a plurality of sets, each set being distributed along the same circumference of the liner outer tube 20.

In addition, the shape of the second protrusion 21 and/or the second recess may be set as required, and preferably, the second protrusion 21 is a structure that tapers inward in the radial direction of the liner outer tube 20; and/or the second recess is a structure that tapers radially outward of the liner outer tube 20 to provide a similar mating axial deformation limit. For example, in the embodiment shown in fig. 3 and 4, the second protrusions 21 are provided in a tapered structure.

The liner outer tube 20 may be made of any suitable material, such as a metal material. However, to facilitate the formation of the second protrusion 21 and/or the second recess, the quill outer tube 20 is preferably an injection molded part. For strength, a composite material may be injection molded, for example, the outer liner tube 20 may be a nylon-fiberglass composite injection molded part. The material and the ratio of the nylon and the glass fiber may be set as required, and for example, PA66+ GF30 (i.e., nylon 66+ glass fiber 30) may be used. In addition, by injection molding the bushing outer tube 20 using the nylon glass fiber composite material, the advantages of weight reduction of the bushing outer tube 20 and the bushing with the same performance can be achieved.

According to another aspect of the present application, a bushing is provided, wherein the bushing comprises the bushing inner tube 10 of the present application, the bushing outer tube 20 of the present application, and a glue 30 disposed between the bushing inner tube 10 and the bushing outer tube 20, and the bushing inner tube 10 and the bushing outer tube 20 are disposed in such a manner that the first protrusion corresponds to the second recess and/or the first recess 11 corresponds to the second protrusion 21.

When the bushing inner tube 10 is provided with a first protrusion, the bushing outer tube 20 is provided with a second recess corresponding to the first protrusion; when the liner inner tube 10 is provided with the first recess 11, the liner outer tube 20 is provided with the second protrusion 21 corresponding to the first recess.

During assembly, the first protrusion and the second recess are arranged in correspondence (i.e. arranged along the same radial direction of the bushing), the second protrusion 21 and the first recess 11 are arranged in correspondence, and then the bushing inner tube 10 and the bushing outer tube 20 are fixed to each other by arranging the glue 30 (e.g. vulcanization). The rubber 30 (which may be rubber, for example) forms recesses and protrusions corresponding to the corresponding protrusions and recesses on the liner inner tube 10 and the liner outer tube 20 during the fixing (e.g., vulcanization) process to form axial limit structures engaged with each other with the liner inner tube 10 and the liner outer tube 20, so that an axial deformation limit may be provided between the liner inner tube 10 and the liner outer tube 20, thereby increasing the axial stiffness of the liner and simultaneously increasing the liner axial-radial stiffness ratio.

It will be appreciated that the liner inner tube 10 and liner outer tube 20 of the present application may also be used with prior art liner outer tubes and liner inner tubes, and that the axial deformation limit may also be provided between the liner inner tube and liner outer tube by the glue 30, thereby increasing the axial stiffness and the axial-to-radial stiffness ratio of the liner.

The bushing inner tube, the bushing outer tube and the bushing of the present application can be used in various suitable applications, such as in motor suspensions for vehicles, in particular electric vehicles.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. The present application includes the combination of individual features in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A liner inner tube, characterized in that the liner inner tube (10) has an outer wall and a smooth inner wall, the outer wall is provided with a first recess (11) and/or a first protrusion, the first recess (11) is a structure which is gradually reduced inwards along the radial direction of the liner inner tube (10); and/or the first bulge is a structure which is tapered outwards along the radial direction of the inner pipe (10) of the bushing.

2. A liner inner tube according to claim 1, wherein the outer wall of the liner inner tube (10) is provided with a plurality of the first recesses (11) and/or first protrusions.

3. The liner inner tube according to claim 1, wherein the first recess (11) and/or the first protrusion is provided in the middle of the length of the liner inner tube (10); and/or a plurality of the first recesses (11) and/or first protrusions are distributed along the circumference of the liner inner tube (10).

4. A bushing outer pipe, characterized in that the bushing outer pipe (20) has an inner wall and a smooth outer wall, the inner wall is provided with a second protrusion (21) and/or a second recess, the second protrusion (21) is a structure which is gradually reduced inwards along the radial direction of the bushing outer pipe (20); and/or the second recess is a structure which tapers radially outwards along the outer bushing pipe (20).

5. The liner outer tube according to claim 4, wherein a plurality of the second protrusions (21) and/or second recesses are provided on an inner wall of the liner outer tube (20).

6. A liner outer tube according to claim 4, wherein the second protrusion (21) and/or second recess is provided in the middle of the length of the liner outer tube (20); and/or a plurality of second protrusions (21) and/or second recesses are distributed along the circumferential direction of the liner outer tube (20).

7. The bushing outer tube according to any of claims 4-6, characterized in that the bushing outer tube (20) is a nylon glass fiber composite injection molded part.

8. A bushing, characterized in that it comprises a bushing inner tube (10) according to any one of claims 1 to 3, a bushing outer tube (20) according to any one of claims 4 to 7 and a glue (30) arranged between the bushing inner tube (10) and the bushing outer tube (20), the bushing inner tube (10) and the bushing outer tube (20) being arranged in such a way that the first protrusions correspond to the second recesses and/or the first recesses (11) correspond to the second protrusions (21).