Composite rubber bushing

Abstract

The utility model discloses a composite rubber bushing which comprises an outer layer, a circular truncated cone, a channel and a composite bushing structure. The two annular grooves are formed in the outer surface of the outer layer, part of torsion can be reduced, the sponge layer is arranged in the channel, the outer surface of the sponge layer is fixed to the circular truncated cone, the torsion effect is reduced, the service life of the bush is guaranteed, the composite bush structure is optimally arranged, and the service life of the bush is prolonged. Through the middle outer pipe, the sawtooth ring pieces and the middle inner pipe in the composite sleeve structure, additional structural support can be provided, the overall stability of the lining is improved, the tensile property, the compression resistance and the torsion resistance are improved, lining deformation is prevented, and the performance and durability of the lining are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, specifically to a composite rubber bushing. Background Technology

[0002] With the development of the automotive industry, the supply of cars is increasing, and cars are entering thousands of households. Manufacturers are also placing higher and higher demands on the design of automotive parts. When the leaf springs of a car are subjected to pressure, leaf spring bushings need to be installed to buffer and dampen the shock.

[0003] Currently, Chinese patent application number 201820189008.0 discloses a composite rubber automotive leaf spring bushing with variable stiffness, including an upper truncated cone, a lower truncated cone, and a bushing body. The bottom of the upper truncated cone is glued to the top of the bushing body, and the top of the lower truncated cone is glued to the bottom of the bushing body. The bushing body has a first rubber layer, a second rubber layer, and a third rubber layer inside. The first rubber layer has several uniformly formed first grooves inside. A fourth rubber layer is fixedly provided on the top of the upper truncated cone and the bottom of the lower truncated cone. The fourth rubber layer has several through-holes inside.

[0004] However, the existing composite rubber bushing structure is relatively simple, usually made of multiple materials directly combined. It is inconvenient to provide additional support when subjected to compression, resulting in poor tensile, compressive and torsional properties of the bushing, easy deformation of the bushing and poor durability. Utility Model Content

[0005] The purpose of this invention is to provide a composite rubber bushing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a composite rubber bushing, comprising an outer layer, a frustum, a channel, and a composite sleeve structure. The outer layer has frustums on both its left and right sides, and a channel is formed in the middle of the frustum. The composite sleeve structure is fixedly connected to the inner side of the outer layer. The composite sleeve structure includes a honeycomb layer whose outer surface is connected to the outer layer, a reinforcing component fixed to the inner side of the honeycomb layer, a first retaining ring fixedly connected to the left side of the reinforcing component, a second retaining ring fixedly connected to the right side of the reinforcing component, and an inner layer that is fitted and fixed to the inner side of the reinforcing component. The inner layer is connected to the frustums on both its left and right sides.

[0007] Preferably, the outer surface of the outer layer has two annular grooves, and the two grooves are respectively located on the left and right sides of the outer layer.

[0008] Preferably, a sponge layer is provided inside the channel, and the outer surface of the sponge layer is fixed to the frustum.

[0009] Preferably, the first and second blocking rings are identical in structure and size, and the outer annular surfaces of the first and second blocking rings are fixed to the honeycomb layer.

[0010] Preferably, the reinforcing assembly comprises an intermediate outer tube with an outer surface fixed to the honeycomb layer, a sawtooth ring arranged inside the intermediate outer tube, a rubber filling layer filled inside the sawtooth ring, and an intermediate inner tube arranged inside the sawtooth ring, the side of the intermediate inner tube away from the sawtooth ring being fixed to the inner layer, and the front and back sides of the outer surface of the intermediate inner tube being fixed to the first and second blocking rings respectively.

[0011] Preferably, the sawtooth ring is arranged inside the intermediate outer tube and the intermediate inner tube to form a circular arrangement of triangular structures on both sides.

[0012] Preferably, the outer surface of the inner layer is provided with annular grooves, and the number of annular grooves is not less than five.

[0013] Preferably, the sawtooth ring, the intermediate outer tube and the intermediate inner tube are made of 20 steel.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The outer surface of the outer layer is provided with two annular grooves, which can reduce a part of the torsion, the inside of the passage is provided with a sponge layer, and the outer surface of the sponge layer is fixed to the circular table to reduce the effect of the torsion, thereby ensuring the service life of the bushing, and the composite sleeve structure is optimally arranged, the intermediate outer tube, the sawtooth ring and the intermediate inner tube inside the composite sleeve structure can provide additional structural support, increase the overall stability of the bushing, and increase the tensile, compressive and torsional properties, prevent the deformation of the bushing, and significantly improve the performance and durability of the bushing. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a structural schematic view of the utility model;

[0018] Figure 3 It is a structural schematic view of the composite sleeve structure of the utility model;

[0019] Figure 4 It is a structural schematic view of the reinforcing assembly of the utility model.

[0020] In the figure: outer layer-1, circular truncated cone-2, channel-3, composite sleeve structure-4, groove-10, sponge layer-31, honeycomb layer-41, reinforcing assembly-42, first blocking ring-43, second blocking ring-44, inner layer-45, middle outer tube-421, sawtooth ring-422, rubber filling layer-423, middle inner tube-424. DETAILED DESCRIPTION

[0021] In order to further explain the technical scheme of the utility model, the following specific embodiments are described in detail.

[0022] Please refer to Figure 1 and Figure 2 , the utility model provides a kind of composite rubber bushing, including outer layer 1, circular truncated cone 2, channel 3 and composite sleeve structure 4, outer layer 1 left and right sides are provided with circular truncated cone 2, and channel 3 is set in the inside middle side of circular truncated cone 2, and composite sleeve structure 4 is fixedly connected in the inner side of outer layer 1, two annular grooves 10 are set on the outer surface of outer layer 1, and two grooves 10 are respectively set on the left and right sides of outer layer 1, sponge layer 31 is arranged in channel 3, and the outer surface of sponge layer 31 is fixed with circular truncated cone 2, to reduce the effect of torsion force, guarantee the service life of bushing, and provide additional structural support by composite sleeve structure 4, increase the overall stability of bushing, and increase the tensile and compressive capacity, enhance the torsion resistance performance, prevent bushing deformation, significantly improve the performance and durability of bushing.

[0023] Please refer to Figure 2 , Figure 3 and Figure 4 , the utility model provides a kind of composite rubber bushing, composite sleeve structure 4 includes the honeycomb layer 41 of outer surface and the connection of outer layer 1, the reinforcing assembly 42 of fixed in the inner side of honeycomb layer 41, the first blocking ring 43 of fixed connection in the left side of reinforcing assembly 42, the second blocking ring 44 of fixed connection in the right side of reinforcing assembly 42 and the inner layer 45 of adhesion fixed in the inner side of reinforcing assembly 42, the left and right sides of inner layer 45 are connected with circular truncated cone 2, the structure, size of first blocking ring 43 and second blocking ring 44 are same, and the outer annular surface of first blocking ring 43 and second blocking ring 44 is fixed with honeycomb layer 41, first blocking ring 43 and second blocking ring 44 play the role of blocking at both ends, improve the tear strength of reinforcing assembly 42, annular groove is set on the outer surface of inner layer 45, and the number of annular groove is not less than five, so as to reduce the effect of torsion force, and the tensile and compressive capacity is improved by reinforcing assembly 42, and the torsion resistance performance is enhanced.

[0024] The reinforcing assembly 42 comprises an intermediate outer tube 421 fixed with the honeycomb layer 41, a sawtooth ring 422 arranged inside the intermediate outer tube 421, a rubber filling layer 423 filled inside the sawtooth ring 422, and an intermediate inner tube 424 arranged inside the sawtooth ring 422, the side of the intermediate inner tube 424 away from the sawtooth ring 422 is fixed with the inner layer 45, and the front and back sides of the outer surface of the intermediate inner tube 424 are fixed with the first and second blocking rings 43 and 44 respectively, the setting of the honeycomb layer 41 reduces the weight while improving the strength, the sawtooth ring 422 is distributed inside the intermediate outer tube 421 and the intermediate inner tube 424 to form a triangular structure arranged in a circular shape on both sides, the materials of the sawtooth ring 422, the intermediate outer tube 421 and the intermediate inner tube 424 are all 20 steel, the 20 steel is a high-quality carbon structural steel, has good toughness and plasticity, and is not prone to brittle fracture, can better disperse and absorb vibration under the action of the sawtooth ring 422, and provides additional structural support, improving the overall performance and durability.

[0025] The working principle of the composite rubber bushing is as follows:

[0026] Firstly, the design is installed into the automobile leaf spring support and the leaf spring eye, when the automobile leaf spring is pressed, a part of the torsion is reduced through the groove 10 on the outer layer 1, and a part of the force is absorbed and buffered through the sponge layer 31, reducing the damage of the bushing rubber; secondly, while being pressed, the sawtooth ring 422, the intermediate outer tube 421 and the intermediate inner tube 424 are deformed by extrusion, the intermediate outer tube 421 plays a protective role on the outside to improve the compression resistance, and the sawtooth ring 422 and the intermediate inner tube 424 are deformed by extrusion, can better disperse and absorb vibration under the action of the sawtooth ring 422, and the sawtooth design of the circular ring distribution of the sawtooth ring 422 increases the tensile and compression resistance, enhances the torsion resistance, prevents the deformation of the bushing, and can quickly restore to the original shape after being pressed, significantly improving the performance of the bushing.

[0027] The above is only a preferred example of the utility model and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A composite rubber bushing characterized by: The structure comprises an outer layer (1), which is provided with a circular table (2) on both left and right sides, a passageway (3) is formed in the middle of the circular table (2), a composite sleeve structure (4) is fixedly connected to the inner side of the outer layer (1), the composite sleeve structure (4) comprises a honeycomb layer (41) connected to the outer surface of the outer layer (1), a reinforcing assembly (42) fixed to the inner side of the honeycomb layer (41), a first blocking ring (43) fixedly connected to the left side of the reinforcing assembly (42), a second blocking ring (44) fixedly connected to the right side of the reinforcing assembly (42), and an inner layer (45) fixedly connected to the inner side of the reinforcing assembly (42); the left and right sides of the inner layer (45) are connected to the circular table (2). The reinforcing assembly (42) comprises an intermediate outer tube (421) fixed to the outer surface of the honeycomb layer (41), a sawtooth ring piece (422) arranged on the inner side of the intermediate outer tube (421), a rubber filling layer (423) filled in the sawtooth ring piece (422), and an intermediate inner tube (424) arranged on the inner side of the sawtooth ring piece (422); the side of the intermediate inner tube (424) away from the sawtooth ring piece (422) is fixed to the inner layer (45), and the front and rear sides of the outer surface of the intermediate inner tube (424) are fixed to the first blocking ring (43) and the second blocking ring (44), respectively.

2. The composite rubber bushing of claim 1, wherein: Two annular grooves (10) are formed on the outer surface of the outer layer (1), and the two grooves (10) are arranged on the left and right sides of the outer layer (1), respectively.

3. The composite rubber bushing of claim 1, wherein: A sponge layer (31) is arranged in the passageway (3), and the outer surface of the sponge layer (31) is fixed to the circular table (2).

4. The composite rubber bushing of claim 1, wherein: The first blocking ring (43) and the second blocking ring (44) have the same structure and size, and the outer annular surfaces of the first blocking ring (43) and the second blocking ring (44) are fixed to the honeycomb layer (41).

5. The composite rubber bushing of claim 1, wherein: The sawtooth ring piece (422) is arranged on the inner sides of the intermediate outer tube (421) and the intermediate inner tube (424) to form a triangular structure arranged in a circular shape on both sides.

6. The composite rubber bushing of claim 1, wherein: An annular groove is formed on the outer surface of the inner layer (45), and the number of the annular grooves is not less than five.

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