CN111457043A

CN111457043A - Automobile auxiliary frame bushing

Info

Publication number: CN111457043A
Application number: CN202010410863.1A
Authority: CN
Inventors: 熊友超; 颜浩勤
Original assignee: Vorwerk Autotec Suzhou Co ltd
Current assignee: Vorwerk Autotec Suzhou Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-07-28

Abstract

The invention relates to an automobile auxiliary frame bushing which comprises a supporting inner pipe, a supporting outer pipe and a buffer layer arranged between the supporting inner pipe and the supporting outer pipe, wherein a limiting mechanism is further arranged on the auxiliary frame bushing and used for limiting the movement distance of the supporting inner pipe in the axial direction of the bushing; according to the automobile auxiliary frame bushing, the axial movement distance of the support inner pipe in the bushing can be limited through the limiting mechanism, namely when the support inner pipe is axially stressed to move and moves for a certain distance, the support inner pipe cannot move continuously, and therefore the situation that the support inner pipe is separated from a rubber body relatively is avoided.

Description

Automobile auxiliary frame bushing

Technical Field

The invention relates to the field of rubber bushings for automobiles, in particular to a bushing for an auxiliary frame of an automobile.

Background

With the improvement of the living standard of people, more and more attention is paid to the comfort performance of vehicles in running. The auxiliary frame lining is connected with the vehicle body by the lining, so that the driving comfort of the vehicle can be improved.

In order to avoid the situation that the inner pipe of the bushing is too large in axial movement and is separated from the rubber layer, the vehicle body is collided with the auxiliary frame (the inner pipe faces one side along the axial direction), or the vehicle body is separated from the auxiliary frame (the inner pipe faces the opposite other side along the axial direction), a corresponding limiting buffer mechanism can be arranged between the auxiliary frame bushing and the vehicle body, one side of the existing bushing shell is provided with a flanging structure, and rubber pad structures are arranged at two ends of the shell, then the bushing is connected with the vehicle body at one end of the bushing shell, and a buffer plate needs to be installed, and the rubber pads are arranged on the buffer plate, so that the inner pipe and the rubber. This type of sub vehicle frame bush installation process is many, and the material cost, the cost of manufacture of buffer board all lead to the bulk cost to rise, and the service environment water of buffer board is many moist, still need do rust-resistant treatment, and is comparatively serious to environmental pollution.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides an automobile auxiliary frame bushing.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a car sub vehicle frame bush, sub vehicle frame bush is including supporting the inner tube, supporting the outer tube, locating the buffer layer between support inner tube and the outer tube, still is provided with stop gear on the sub vehicle frame bush, and stop gear is used for restricting the movement distance of supporting the inner tube in the axial of bush, and stop gear includes and blocks the structure with the first structure that blocks that supports inner tube relatively fixed, blocks the structure with the second that supports outer tube relatively fixed.

Preferably, the limiting mechanism is positioned inside the outer inner peripheral surface of the support outer tube.

Preferably, the first blocking structure is formed on an outer circumferential surface of the support inner tube.

Preferably, the sub-frame bushing further includes an auxiliary layer disposed between the cushion layer and the support inner tube, and the first barrier structure is formed on an outer circumferential surface of the auxiliary layer.

Preferably, the first blocking structure is formed by a first tab and a second tab formed at opposite sides of a central portion of an outer circumferential surface of the auxiliary layer.

Preferably, the second blocking structure is formed on the inner circumferential surface of the supporting outer tube, and the limiting mechanism is wrapped inside the buffer layer.

Preferably, the second blocking structure is formed by a first protruding portion and a second protruding portion, wherein the first protruding portion and the second protruding portion are formed on the inner circumferential surface of the outer supporting tube and located on two axial sides respectively, the first protruding portion and the second protruding portion are located on two corresponding sides in the circumferential direction of the outer supporting tube, the first protruding tongue is located between the first protruding portions located on two axial sides, and the second protruding tongue is located between the second protruding portions located on two axial sides.

Preferably, two circumferentially corresponding sides of the support outer pipe are provided with window grooves, and the window grooves on the two sides are respectively positioned between the first protruding parts on the two sides and the second protruding parts on the two sides in the axial direction.

Preferably, the support outer tube comprises a first semi-ring body and a second semi-ring body which are correspondingly arranged, the first protruding portion is arranged on the inner surface of the first semi-ring body, and the second protruding portion is arranged on the inner surface of the second semi-ring body.

Preferably, the auxiliary layer is made of a plastic material, the support inner pipe is made of a high-strength aluminum alloy, and the auxiliary layer, the first protruding tongue and the second protruding tongue formed on the auxiliary layer and the support inner pipe are integrally formed in a plastic-coated mode.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the automobile auxiliary frame bushing, the axial movement distance of the support inner pipe in the bushing can be limited through the limiting mechanism, namely when the support inner pipe is axially stressed to move and moves for a certain distance, the support inner pipe cannot move continuously, and therefore the situation that the support inner pipe is separated from a rubber body relatively is avoided. In addition, the limiting mechanism is arranged in the buffer layer (rubber body), and can fully utilize the elastic buffer force of the rubber body to provide certain buffer performance for the limiting mechanism, so that the first barrier knot and the second barrier knot are prevented from being in hard contact; on the premise of ensuring safety and stability in use, the auxiliary frame bushing reduces the installation complexity of the bushing, improves the installation efficiency, avoids the problem of high material cost caused by the use of the buffer plate and the rubber pad, and also avoids the condition of environmental pollution caused by the manufacture of the buffer plate.

Drawings

FIG. 1 is a perspective view of a bushing according to the present invention;

FIG. 2 is a side cross-sectional view of the bushing of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 along the line A-A;

wherein: 10. supporting the inner pipe; 11. an auxiliary layer; 101. a first tab; 102. a second tongue; 21. a first half ring body; 22. a second half-ring; 210. a first boss portion; 220. a second boss portion; 30. a buffer layer; 40. a window slot; 41. and a weight reduction groove.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1 to 3, an automobile auxiliary frame bushing, the auxiliary frame bushing includes a supporting inner tube 10 (made of aluminum alloy), a supporting outer tube (made of PA66+ GF35 plastic), and a buffer layer 30 (made of rubber) disposed between the supporting inner tube 10 and the outer tube, the auxiliary frame bushing is further provided with a limiting mechanism, the limiting mechanism is used for limiting the movement distance of the supporting inner tube 10 in the axial direction of the bushing, the limiting mechanism is located within the inner peripheral surface of the supporting outer tube, and the limiting mechanism is wrapped inside the buffer layer 30.

Specifically, stop gear includes and supports inner tube 10 relatively fixed's first block structure, with the second block structure that supports outer tube relatively fixed, after supporting inner tube 10 along axial motion certain distance, first block structure is inconsistent with the second block structure, then supports inner tube 10 and can't continue the motion, support the motion of inner tube 10 and be restricted promptly, can not continue the motion to avoid supporting inner tube 10 because of too big at the axial motion range, lead to supporting the condition emergence that inner tube 10 and buffer layer 30 break away from.

In this example, the sub-frame bushing further includes an auxiliary layer 11 disposed between the cushion layer 30 and the support inner pipe 10, and first blocking structures are formed on the outer circumferential surface of the auxiliary layer 11, and the first blocking structures are formed by first protruding tongues 101 and second protruding tongues 102 formed on the opposite sides of the middle portion of the outer circumferential surface of the auxiliary layer 11. The auxiliary layer 11 is made of plastic material, the supporting inner tube 10 is made of high-strength aluminum alloy, and the auxiliary layer 11 and the first tab 101 and the second tab 102 formed thereon are integrally formed with the supporting inner tube 10 by plastic coating. In addition, a plurality of tooth grooves are formed in the outer peripheral surface of the supporting inner pipe 10, the tooth grooves ensure that the supporting inner pipe 10 and the auxiliary layer 11 have stronger stable combination performance after being subjected to plastic coating forming, and the supporting inner pipe and the auxiliary layer are separated from each other when the supporting inner pipe is twisted or axially moved.

Of course, the first barrier structure may be formed on the outer circumferential surface of the support inner tube 10, that is, the first barrier structure and the support tube are made of an integral aluminum alloy, which consumes a lot of raw materials, and the auxiliary layer 11 (PA 66+ GF35 plastic) is provided and the first barrier structure and the auxiliary layer 11 are integrally formed, which may avoid using an aluminum alloy material and cause high cost.

Further, a second blocking structure is formed on an inner circumferential surface of the support outer tube. The second blocking structure is composed of first protrusions 210 and second protrusions 220, which are formed on the inner circumferential surface of the outer supporting tube and located on two axial sides respectively, the first protrusions 210 and the second protrusions 220 are located on two corresponding sides in the circumferential direction of the outer supporting tube, the first tongue 101 is located between the first protrusions 210 located on two axial sides, and the second tongue 102 is located between the second protrusions 220 located on two axial sides.

When the inner tube 10 is moved axially in two directions, after a certain distance, the first tab 101 and the second tab 102 will interfere with the first protrusion 210 and the second protrusion 220 on one side, so that the inner tube 10 cannot move further.

Further, the supporting outer tube comprises a first semi-ring body 21 and a second semi-ring body 22 which are correspondingly arranged, window grooves 40 which are correspondingly arranged are respectively arranged on the first semi-ring body 21 and the second semi-ring body 22, and the window grooves 40 on the two sides are respectively positioned between the first protruding parts 210 on the two sides and the second protruding parts 220 on the two sides in the axial direction. The first protrusion 210 is disposed on the inner surface of the first half-ring 21, and the second protrusion 220 is disposed on the inner surface of the second half-ring 22.

The sub vehicle frame bush all is large-scale bush, will support the outer tube and fall into two, can avoid too big support outer tube fracture, also can support the outer tube card and go into when sub vehicle frame draw-in groove, can with the chucking of draw-in groove laminating. The window slots 40 on the two sides can facilitate the rubber creep deformation inside, reduce the material consumption of the supporting outer pipe and the weight, and the supporting outer pipe is also provided with a plurality of weight reduction slots 41.

In summary, the bushing for the auxiliary frame of the automobile has the advantages that the axial movement distance of the supporting inner tube in the bushing can be limited through the arrangement of the limiting mechanism, namely when the supporting inner tube is axially stressed to move and moves for a certain distance, the supporting inner tube cannot move continuously, and therefore the situation that the supporting inner tube is separated from the rubber body relatively is avoided. In addition, the limiting mechanism is arranged in the buffer layer (rubber body), and can fully utilize the elastic buffer force of the rubber body to provide certain buffer performance for the limiting mechanism, so that the first barrier knot and the second barrier knot are prevented from being in hard contact; on the premise of ensuring safety and stability in use, the auxiliary frame bushing reduces the installation complexity of the bushing, improves the installation efficiency, avoids the problem of high material cost caused by the use of the buffer plate and the rubber pad, and also avoids the condition of environmental pollution caused by the manufacture of the buffer plate.

The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

Claims

1. The utility model provides a car sub vehicle frame bush, sub vehicle frame bush is including supporting the inner tube, supporting the outer tube, locating support the buffer layer between inner tube and the outer tube, its characterized in that: still be provided with stop gear on the sub vehicle frame bush, stop gear is used for right at the axial of bush the movement distance of supporting the inner tube limits, stop gear include with support the inner tube relatively fixed's first block structure, with support the outer tube relatively fixed's second block structure.

2. The automotive sub-frame bushing of claim 1, wherein: the limiting mechanism is located inside the outer inner peripheral surface of the supporting outer tube and is wrapped inside the buffer layer.

3. The automotive sub-frame bushing of claim 1, wherein: the first blocking structure is formed on the outer peripheral surface of the support inner pipe.

4. The automotive sub-frame bushing of claim 1, wherein: the auxiliary frame bushing further comprises an auxiliary layer arranged between the buffer layer and the support inner pipe, and the first blocking structure is formed on the outer peripheral surface of the auxiliary layer.

5. The automotive sub-frame bushing of claim 4, wherein: the first blocking structure is composed of a first convex tongue and a second convex tongue which are formed at the corresponding two sides of the middle part of the outer peripheral surface of the auxiliary layer.

6. The automotive sub-frame bushing of claim 5, wherein: the second blocking structure is formed on an inner circumferential surface of the support outer tube.

7. The automotive sub-frame bushing of claim 6, wherein: the second blocking structure is composed of first protruding parts and second protruding parts, the first protruding parts are formed on the inner circumferential surface of the supporting outer pipe and located on two axial sides respectively, the first protruding parts and the second protruding parts are located on two corresponding sides in the circumferential direction of the supporting outer pipe, the first protruding tongues are located between the first protruding parts located on two axial sides, and the second protruding tongues are located between the second protruding parts located on two axial sides.

8. The automotive sub-frame bushing of claim 7, wherein: the two circumferentially corresponding sides of the supporting outer pipe are provided with window grooves, and the window grooves on the two sides are respectively positioned between the first protruding parts on the two sides and the second protruding parts on the two sides in the axial direction.

9. The automotive sub-frame bushing of claim 7, wherein: the supporting outer pipe comprises a first semi-ring body and a second semi-ring body which are correspondingly arranged, the first protruding portion is arranged on the inner surface of the first semi-ring body, and the second protruding portion is arranged on the inner surface of the second semi-ring body.

10. The automotive sub-frame bushing of claim 5, wherein: the auxiliary layer is made of plastic materials, the supporting inner tube is made of high-strength aluminum alloy, and the auxiliary layer, a first convex tongue and a second convex tongue which are formed on the auxiliary layer and the supporting inner tube are integrally formed in a plastic coating mode.