High-damping rubber shock-absorbing bushing for automobile chassis suspension

Abstract

The utility model relates to the technical field of automobile bushings, in particular to a high-damping rubber shock-absorbing bushing for an automobile chassis suspension, which comprises an inner lining pipe, a rubber layer and an outer lining pipe which are coaxially arranged, the outer lining pipe is positioned on the outer side of the inner lining pipe, the rubber layer is arranged between the outer lining pipe and the inner lining pipe, the outer lining pipe consists of an inner pipe and a connecting pipe which are coaxially arranged, and the inner pipe is connected with the connecting pipe. The outer diameter of the inner pipe is smaller than the inner diameter of the connecting pipe; the outer lining pipe further comprises a supporting piece, the inner pipe is fixedly arranged on the inner side of the connecting pipe through the supporting piece, the service life of the rubber bushing can be prolonged, and the maintenance cost of a vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile bushing, and specifically to a high-damping rubber shock-absorbing bushing for automobile chassis suspension. BACKGROUND

[0002] High-damping rubber is a new type of elastic material made of high-molecular polymer as the main component and adding various additives. Compared with traditional rubber, the molecular chain structure of high-damping rubber is more complex, and the distribution of internal energy levels is more uniform, so that the material generates more internal molecular friction during vibration, making it have stronger damping capacity and generate greater resistance during compression deformation. This characteristic enables high-damping rubber to effectively absorb and dissipate mechanical vibration and noise, so it is widely used in the fields of shock absorption and noise reduction. For example, in the fields of automobiles, power equipment, aerospace, etc., high-damping rubber can be used as shock absorbers and sound insulation boards to achieve excellent shock absorption and noise reduction effects. However, rubber is a material that ages easily, and after being affected by environmental factors such as oxygen, ultraviolet rays, and heat, it tends to harden, crack, and lose elasticity, and it is difficult to recover after the aging process accelerates, which not only limits the service life of rubber products, but also increases the maintenance cost of vehicles when replacing new rubber bushings. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a high-damping rubber shock-absorbing bushing for automobile chassis suspension, which can improve the service life of the rubber bushing and reduce the maintenance cost of the vehicle.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high-damping rubber shock-absorbing bushing for automobile chassis suspension, comprising an inner bushing pipe, a rubber layer, and an outer bushing pipe arranged coaxially, the outer bushing pipe is located outside the inner bushing pipe, the rubber layer is arranged between the outer bushing pipe and the inner bushing pipe, the outer bushing pipe is composed of a inner pipe and a connecting pipe arranged coaxially, the outer diameter of the inner pipe is smaller than the inner diameter of the connecting pipe; the outer bushing pipe further comprises a support, the inner pipe is fixedly arranged on the inner side of the connecting pipe through the support.

[0005] Preferably, the first end of the inner pipe is fixedly connected to the first end of the connecting pipe, and the tail end of the inner pipe is fixedly connected to the tail end of the connecting pipe, so as to form a closed vacuum cavity inside the outer bushing pipe.

[0006] Preferably, the support comprises a plurality of lining plates; the plurality of lining plates are distributed around the axis of the inner pipe, and the lining plates are arranged along the length of the inner pipe.

[0007] Preferably, the support comprises a support ring; the support ring is fixedly sleeved on the inner pipe; the outer periphery of the support ring is fixedly connected to the inner wall of the connecting pipe.

[0008] Preferably, the support ring is provided with a plurality of support rings which are distributed along the axial direction of the inner tube.

[0009] Preferably, the inner liner tube has the same structure as the outer liner tube.

[0010] Preferably, the inner liner tube is internally provided with a vacuum cavity.

[0011] Preferably, the inner liner tube is provided with a weight-reducing hole.

[0012] Preferably, the rubber layer is bonded to the inner tube and the inner liner tube.

[0013] Preferably, the rubber layer is equal in length to the outer liner tube.

[0014] Compared with the prior art, the present application has the beneficial effects that: by arranging the outer liner tube between the inner tube and the connecting tube and arranging the heat insulation layer between the inner tube and the connecting tube, the cold and heat from the outside cannot be directly transmitted to the rubber layer through the outer liner tube, the influence of the change of the outside temperature difference on the rubber layer is reduced, the process of rubber hardening, cracking and losing elasticity is slowed down, and the service life of the rubber bushing is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a schematic view of the overall structure of the bushing of the present application;

[0016] Figure 2 Fig. 2 is a schematic view of the axial cross section of the bushing of the present application;

[0017] Figure 3 Fig. 3 is a schematic view of the cross section of the bushing of the present application perpendicular to the axial direction;

[0018] Figure 4 Fig. 4 is a schematic view of the structure of another embodiment of the present application.

[0019] In the drawings: 1 inner liner tube, 2 rubber layer, 3 outer liner tube, 11 weight-reducing hole, 31 inner tube, 32 connecting tube, 33 heat insulation layer, 34 lining plate, 35 support ring. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present application. Although the present application is described in conjunction with its preferred specific embodiments, these embodiments are merely illustrative and not limiting of the scope of the present application.

[0021] Reference Figures 1-3In the embodiment one of the utility model, a kind of high-damping rubber shock-absorbing bushing for automobile chassis suspension, including coaxially arranged inner liner tube 1, rubber layer 2 and outer liner tube 3, wherein, inner liner tube 1 and outer liner tube 3 are metal material, outer liner tube 3 is located at the outside of inner liner tube 1, rubber layer 2 is located between outer liner tube 3 and inner liner tube 1, it can be understood, the outer wall of rubber layer 2 is in abutment with the inner surface of outer liner tube 3, the inner wall of rubber layer 2 is at least partially in abutment with the outer surface of inner liner tube 1;In addition, during production, rubber layer 2 and inner liner tube 1 and outer liner tube 3 are all fixedly connected by the way of bonding;Outer liner tube 3 is composed of inner tube 31 and connecting pipe 32, heat insulation layer 33 is arranged between inner tube 31 and connecting pipe 32, heat insulation layer 33 can effectively separate inner tube 31 and connecting pipe 32, reduce the heat transfer between inner tube 31 and connecting pipe 32, cold and heat cannot be directly transmitted to rubber layer 2 by outer liner tube 3, so that the influence of external temperature difference change on rubber layer 2 is reduced, the process of rubber hardening, cracking and losing elasticity is slowed down, and finally the service life of rubber bushing is improved.

[0022] In the embodiment, heat insulation layer 33 is vacuum cavity, when implemented, the inner tube 31 is located at the inside of connecting pipe 32, the outer diameter of inner tube 31 is less than the inner diameter of connecting pipe 32, the first end of inner tube 31 is fixedly connected with the first end of connecting pipe 32, and the tail end of inner tube 31 is fixedly connected with the tail end of connecting pipe 32, so that a closed space, i.e. vacuum cavity, is formed inside outer liner tube 3;Outer liner tube 3 is equal in length to rubber layer 2, so that rubber layer 2 can be covered in the maximum range, and the influence of external temperature difference on rubber layer 2 is reduced.

[0023] Please refer to Figure 3 After rubber bushing is embedded in suspension in the form of close fit, connecting pipe 32 is tightly matched with suspension, and in order to prevent connecting pipe 32 from collapsing, concave deformation and the like after being extruded, support member needs to be arranged inside vacuum cavity;In the embodiment, support member is strip-shaped lining plate 34;Three lining plates 34 are arranged, and the three are distributed around the axis of outer liner tube 3, the length of lining plate 34 is consistent with the length of the body of outer liner tube 3;After lining plate 34 is arranged between inner tube 31 and connecting pipe 32, connecting pipe 32 is supported, and the strength of the whole outer liner tube 3 is improved.

[0024] In one embodiment, inner liner tube 1 is used as a structural member, and the structure thereof can be the same as or similar to that of outer liner tube 3, which is similar to reducing the influence of temperature on rubber layer 2 from the outside, and the vacuum cavity arranged inside inner liner tube 1 can reduce the influence of temperature on rubber layer 2 from the inside.

[0025] Please refer to Figure 4In one embodiment, the support is a support ring 35, and the support ring 35 is provided with a plurality of support rings 35 distributed along the axial direction of the bush body, and the plurality of support rings 35 are located between the inner tube 31 and the connecting tube 32. Specifically, the inner wall of the support ring 35 is fixedly connected with the outer wall of the inner tube 31, and the outer wall of the support ring 35 is fixedly connected with the inner wall of the connecting tube 32.

[0026] In one embodiment, the inner liner tube 1 is also provided with a weight-reducing hole 11.

[0027] Through the technical scheme, the outer liner tube is arranged between the inner tube and the connecting tube, and a heat insulation layer is arranged between the inner tube and the connecting tube, so that cold and heat from the outside cannot be directly transmitted to the rubber layer through the outer liner tube, the influence of the change of the outside temperature difference on the rubber layer is reduced, the process of rubber hardening, cracking and losing elasticity is slowed down, and finally the service life of the rubber bushing is improved.

[0028] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical scheme of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical scheme of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A high-damping rubber shock-absorbing bushing for a chassis suspension of an automobile, comprising an inner bushing tube (1), a rubber layer (2) and an outer bushing tube (3) arranged coaxially, the outer bushing tube (3) being located outside the inner bushing tube (1), and the rubber layer (2) being arranged between the outer bushing tube (3) and the inner bushing tube (1), characterized in that: The outer lining pipe (3) is composed of an inner pipe (31) and a connecting pipe (32) arranged coaxially, the outer diameter of the inner pipe (31) is smaller than the inner diameter of the connecting pipe (32); the outer lining pipe (3) further comprises a support, the inner pipe (31) is fixedly arranged on the inner side of the connecting pipe (32) through the support. ​ 2. A high damping rubber bushing for use in a suspension of an automotive vehicle chassis as claimed in claim 1, wherein: The first end of the inner pipe (31) is fixedly connected with the first end of the connecting pipe (32), and the tail end of the inner pipe (31) is fixedly connected with the tail end of the connecting pipe (32), so that a closed vacuum cavity is formed in the outer lining pipe (3).

3. A high damping rubber bushing for use in a suspension of an automotive vehicle chassis as claimed in claim 1, wherein: The support comprises a plurality of lining plates (34); the plurality of lining plates (34) are distributed around the axis of the inner pipe (31), and the lining plates (34) are arranged along the length of the inner pipe (31).

4. A high damping rubber bushing for use in a suspension of an automotive vehicle chassis as claimed in claim 1, wherein: The support comprises a support ring (35); the support ring (35) is fixedly sleeved on the inner pipe (31); the outer periphery of the support ring (35) is fixedly connected with the inner wall of the connecting pipe (32).

5. A high damping rubber bushing for use in a suspension of an automotive vehicle chassis as claimed in claim 4, wherein: The support ring (35) is provided with a plurality of support rings (35), and the plurality of support rings (35) are distributed along the axial direction of the inner pipe (31).

6. A high damping rubber bushing for use in a suspension of an automotive vehicle chassis as claimed in claim 1, wherein: The structure of the inner lining pipe (1) is the same as that of the outer lining pipe (3).

7. A high damping rubber bushing for use in a suspension of an automotive vehicle chassis as claimed in claim 1, wherein: The inner lining pipe (1) is internally provided with a vacuum cavity.

8. A high damping rubber bushing for use in a suspension of an automotive vehicle chassis as claimed in claim 1, wherein: The inner lining pipe (1) is provided with a weight-reducing hole (11).

9. The high damping rubber bushing for use in the suspension of an automotive vehicle chassis as defined in claim 1, wherein: The rubber layer (2) is adhered to the inner pipe (31) and the inner lining pipe (1).

10. The high damping rubber bushing for use in the suspension of an automotive vehicle chassis as set forth in claim 1, characterized by: The rubber layer (2) is equal in length to the outer lining pipe (3).

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