CN210423536U

CN210423536U - High-strength automobile rubber bushing

Info

Publication number: CN210423536U
Application number: CN201921464979.2U
Authority: CN
Inventors: 刘敏; 许三连
Original assignee: Zhejiang Sanli Auto Parts Co Ltd
Current assignee: Zhejiang Sanli Auto Parts Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-04-28
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses a high strength car rubber bush belongs to rubber bush technical field, its technical scheme main points are including the inner tube, rubber sleeve and outer protection tube, wherein, rubber sleeve cladding is in the surface of inner tube, rubber sleeve press-fitting is on the inner wall of outer protection tube, tip is supported tightly on the outer wall of inner tube behind the both ends turn-ups of outer protection tube, and the inner wall at outer protection tube turn-ups position hugs closely in rubber sleeve's tip, rubber bush is still including being located the inner protection tube between inner tube and the rubber sleeve, the inner protection tube bonds on the outer wall of inner tube, form a body structure after inner protection tube and the rubber sleeve vulcanize. In order to prevent the deformation of the inner pipe after being subjected to a large load for a long time, an inner protection pipe is arranged between the rubber sleeve and the inner pipe, the compression resistance of the inner pipe is indirectly enhanced under the buffer action of the inner protection pipe, and the inner protection pipe and the rubber sleeve are vulcanized together to form an integral structure for improving the connection strength between the inner protection pipe and the rubber sleeve.

Description

High-strength automobile rubber bushing

Technical Field

The utility model belongs to the technical field of rubber bush, refer in particular to a high strength car rubber bush.

Background

The rubber bushing belongs to a rubber product part of an automobile chassis, is a hinge point between parts of an automobile body, has superior elastic characteristics and damping characteristics, can bear load, isolate and damp vibration and reduce noise, and further ensures riding comfort, so that the rubber bushing has important influence on design of an automobile suspension.

The rubber bushing mainly comprises an inner sleeve, an outer sleeve and a middle rubber sleeve, and because the radial external force and the axial external force borne by the rubber sleeve are large, the rubber sleeve easily exceeds the deformation range after long time, and then the rubber sleeve is torn and deformed, so that the damping effect of the whole rubber bushing is reduced, and most of the force borne by the outer protection tube is exerted on the inner tube, and the inner tube is deformed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high strength car rubber bush is through optimizing rubber bush's inner structure to strengthen its resistance to compression and tear deformation performance.

The purpose of the utility model is realized like this: the utility model provides a high strength car rubber bush, includes inner tube, rubber sleeve and outer protection tube, wherein, the rubber sleeve cladding in the surface of inner tube, the rubber sleeve pressure equipment in on the inner wall of outer protection tube, the both ends turn-ups rear end portion of outer protection tube supports tightly on the outer wall of inner tube, just the inner wall at outer protection tube turn-ups position hug closely in rubber sleeve's tip, the rubber bush still including being located the inner tube with inner protection tube between the rubber sleeve, inner protection tube bond in on the outer wall of inner tube, inner protection tube with form an organic whole structure after the rubber sleeve vulcanizes.

By adopting the technical scheme, the rubber sleeve and the inner pipe are embedded into the outer pipe in a press-fitting mode, so that the outer pipe is required to be flanged in order to prevent the outer pipe from falling off after being subjected to strong external force; because the rubber sleeve needs to bear larger radial external force and axial external force, the deformation appears after the inner tube receives larger load for a long time, so set up the inner protection tube between rubber sleeve and inner tube, under the cushioning effect of inner protection tube, indirect reinforcing the compressive property of inner tube, for improving the joint strength between inner protection tube and the rubber sleeve, consequently vulcanize the two jointly, make it become an organic whole structure.

The utility model discloses further set up to: the inner protection tube is provided with an annular flange arranged around the outer wall of the inner protection tube, the annular flange is provided with a plurality of annular flanges which are uniformly distributed along the length direction of the inner protection tube, and the inner wall of the rubber sleeve is also provided with an annular groove clamped on the annular flange. The end part of the annular flange is of an arc surface structure, and the annular flange protrudes out of the inner protection tube by 2-3 mm.

Through adopting above-mentioned technical scheme, set up the cyclic annular flange of round on the outer wall of interior protective case to further improve the joint strength between inner protection pipe and the rubber sleeve, make difficult production not hard up between the two, and convex cyclic annular flange still has certain radiating effect, can outwards spread inner protection pipe and cyclic annular flange with the produced heat of inner tube.

The utility model discloses further set up to: the rubber sleeve is made of NR natural rubber, a tear-resistant canvas layer is arranged inside the rubber sleeve, and the canvas layer is provided with three layers which are uniformly distributed.

By adopting the technical scheme, the NR natural rubber is mainly composed of rubber hydrocarbon (polyisoprene) and contains a small amount of protein, moisture, resin acid, saccharides, inorganic salt and the like. The rubber sleeve is made of the material, and because the working strength of the rubber sleeve is high, the rubber sleeve is further improved in tear resistance, three layers of canvas layers are arranged inside the rubber sleeve, and the canvas layers play a role in connecting ribs, so that the rubber sleeve is prevented from being damaged after exceeding a deformation range.

The utility model discloses further set up to: the inner wall of the flanging part of the outer protection tube is coated with two adhesive layers, and the two adhesive layers are divided into an inner CH205 adhesive layer and an outer CH220 adhesive layer.

By adopting the technical scheme, the CH205 and the CH220 are adhesives of rubber and metal and have a high-strength bonding effect, the CH205 adhesive layer is coated on the inner wall of the flanging position of the outer protection tube 4 firstly, the CH220 adhesive layer is coated after drying, and the outer protection tube is bonded on the rubber sleeve through the adhesive layer, so that a gap between the outer protection tube and the rubber sleeve is avoided, and the outer tube is loosened.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of the rubber bushing of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is a partial structural schematic view of the outer protection tube of the present invention;

the reference numbers in the figures are: 1. an inner tube; 2. an inner protection tube; 21. an annular flange; 3. a rubber sleeve; 31. an annular groove; 32. a canvas layer; 4. an outer protection tube; 5. an adhesive layer; 51. a CH205 glue layer; 52. CH220 glue layer.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

as shown in fig. 1, a high-strength rubber bushing for an automobile comprises an inner tube 1, a rubber sleeve 3 and an outer protection tube 4, wherein the rubber sleeve 3 covers the outer surface of the inner tube 1, the rubber sleeve 3 is press-fitted on the inner wall of the outer protection tube 4, the end parts of the two flanged ends of the outer protection tube 4 are tightly abutted to the outer wall of the inner tube 1, the inner wall of the flanged part of the outer protection tube 4 is tightly attached to the end part of the rubber sleeve 3, the rubber sleeve 3 is made of NR natural rubber, and three layers of anti-tearing canvas layers 32 are further arranged inside the rubber sleeve 3. The NR natural rubber is mainly composed of a gum hydrocarbon (polyisoprene) and contains a small amount of protein, water, resin acid, saccharides, inorganic salts and the like. The rubber sleeve 3 is made of the material, and because the working strength of the rubber sleeve 3 is high, the tearing resistance of the rubber sleeve 3 is further improved, three layers of canvas layers 32 are arranged inside the rubber sleeve 3, and the canvas layers 32 play a role of connecting ribs, so that the rubber sleeve is prevented from being damaged after exceeding the deformation range.

The rubber bushing also comprises an inner protection tube 2 positioned between the inner tube 1 and the rubber sleeve 3, the inner protection tube 2 is bonded on the outer wall of the inner tube 1, and the inner protection tube 2 and the rubber sleeve 3 are vulcanized to form an integral structure.

The rubber sleeve 3 and the inner tube 1 are embedded into the outer tube in a press-fitting mode, so that the outer tube is required to be flanged in order to prevent the outer tube from falling off after being subjected to strong external force; because the rubber sleeve 3 needs to bear larger radial external force and axial external force, in order to prevent the deformation of the inner pipe 1 after being subjected to larger load for a long time, the inner protection pipe 2 is arranged between the rubber sleeve 3 and the inner pipe 1, under the buffer action of the inner protection pipe 2, the compression resistance of the inner pipe 1 is indirectly enhanced, and the inner protection pipe 2 and the rubber sleeve 3 are vulcanized together to form an integral structure for improving the connection strength between the inner protection pipe 2 and the rubber sleeve 3.

As shown in fig. 2 and 3, the inner protection tube 2 has a plurality of annular flanges 21 surrounding the outer wall thereof, the plurality of annular flanges 21 are uniformly distributed along the length direction of the inner protection tube 2, and the inner wall of the rubber sleeve 3 is further provided with an annular groove 31 engaged with the annular flange 21. The end part of the annular flange 21 is of an arc surface structure, and the annular flange 21 protrudes out of the inner protection tube 22-3 mm. The outer wall of the inner protective sleeve is provided with a circle of annular flanges 21 to further improve the connection strength between the inner protective tube 2 and the rubber sleeve 3, so that the inner protective tube and the rubber sleeve are not easy to loosen, and the protruded annular flanges 21 also have a certain heat dissipation effect and can diffuse heat generated by the inner tube 1 outwards from the inner protective tube 2 and the annular flanges 21.

As shown in fig. 4, the utility model discloses further set up to, the coating has adhesive layer 5 on the inner wall at outer protection tube 4 turn-ups position, and adhesive layer 5 has two-layerly, and divide into the CH205 glue film 51 of inlayer and the CH220 glue film 52 of inlayer. By adopting the technical scheme, the CH205 and the CH220 are adhesives of rubber and metal and have a high-strength bonding effect, the CH205 adhesive layer 51 is coated on the inner wall of the flanging position of the outer protection tube 4 firstly, the CH220 adhesive layer 52 is coated after drying, and the outer protection tube 4 is bonded on the rubber sleeve 3 through the adhesive layer 5, so that a gap between the outer protection tube 4 and the rubber sleeve 3 is avoided, and the outer protection tube 4 is loosened.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a high strength car rubber bushing, includes inner tube (1), rubber sleeve (3) and outer protection tube (4), its characterized in that: rubber sleeve (3) cladding in the surface of inner tube (1), rubber sleeve (3) pressure equipment in on the inner wall of outer protection tube (4), the both ends turn-ups rear end portion of outer protection tube (4) supports tightly on the outer wall of inner tube (1), just the inner wall at outer protection tube (4) turn-ups position hug closely in the tip of rubber sleeve (3), the rubber bush still including being located inner tube (1) with inner protection tube (2) between rubber sleeve (3), inner protection tube (2) adhere in on the outer wall of inner tube (1), inner protection tube (2) with form an organic whole structure after rubber sleeve (3) vulcanizes.

2. The high-strength automobile rubber bushing according to claim 1, wherein: the inner protection tube (2) is provided with an annular flange (21) arranged around the outer wall of the inner protection tube, the annular flange (21) is provided with a plurality of flanges and is uniformly distributed along the length direction of the inner protection tube (2), and the inner wall of the rubber sleeve (3) is further provided with an annular groove (31) clamped on the annular flange (21).

3. The high-strength rubber bushing for automobiles according to claim 2, wherein: the end part of the annular flange (21) is of an arc surface structure, and the annular flange (21) protrudes out of the inner protection tube (2) by 2-3 mm.

4. The high-strength automobile rubber bushing according to claim 1, wherein: the rubber sleeve (3) is made of NR natural rubber, a tear-resistant canvas layer (32) is arranged inside the rubber sleeve (3), and the canvas layer (32) is provided with three layers which are uniformly distributed.

5. The high-strength automobile rubber bushing according to claim 1, wherein: the inner wall of the flanging part of the outer protection tube (4) is coated with an adhesive layer (5), and the adhesive layer (5) has two layers and is divided into an inner CH205 adhesive layer (51) and an outer CH220 adhesive layer (52).