Novel bushing structure

Abstract

The utility model relates to the field of novel product structures of automobile parts, and discloses a novel lining structure. Comprising a lining inner pipe, a protrusion extending in the radial direction is formed in the middle of the lining inner pipe, the edges of the upper surface and the lower surface of the protrusion are transition arcs, the periphery of the lining inner pipe is integrally connected with a rubber lining, the rubber lining is provided with an inner wall and an outer wall, the inner wall is provided with a groove matched with the protrusion, and the groove is attached to the contact face of the protrusion. A bushing outer pipe is integrally formed on the outer wall, and bends facing the rubber bushing are arranged at the upper end and the lower end corresponding to the upper end of the bushing outer pipe. The protrusions are arranged on the lining inner pipe, the edges of the upper surface and the lower surface of each protrusion are the transition arcs, the radian of the transition arcs is changed, the axial rigidity can be rapidly changed, and the performance requirement of an automobile is met.

Description

Technical Field

[0001] The utility model relates to the field of new product structures of automobile parts, and particularly to a new bushing structure. Background Art

[0002] With the rapid development of the automobile industry, the requirements for automobile parts are getting higher and higher, and the handling performance requirements are becoming more and more stringent. On the basis of ensuring the installation requirements, the shapes of traditional inner and outer tube bushings are regular, and it is very difficult to quickly adjust the axial stiffness when a certain radial stiffness is ensured, and the needs of different vehicle models cannot be met. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above problems and provide a new bushing structure.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a new bushing structure, including a bushing inner tube, a radially extending protrusion is formed in the middle part of the bushing inner tube, the edges of the upper surface and the lower surface of the protrusion are transition arcs, a rubber bushing is integrally formed and connected to the outer periphery of the bushing inner tube, the rubber bushing has an inner wall and an outer wall, the inner wall has a groove matching with the protrusion, the contact surface between the groove and the protrusion is fitted, a bushing outer tube is integrally formed on the outer wall, and bends facing the rubber bushing are provided at both the upper end and the lower end corresponding to the upper end of the bushing outer tube.

[0005] According to the utility model, further, the rubber bushing also has a top surface and a bottom surface parallel to the top surface, the bottom surface is located below the bend at the lower end of the bushing outer tube, a rubber groove is opened on the bottom surface, the opening of the rubber groove faces downward, and at the same time, a rubber protrusion is formed, and the rubber protrusion corresponds to the position of the bend at the lower end of the bushing outer tube.

[0006] According to the utility model, further, the outer peripheral surface of the rubber protrusion inclines inward.

[0007] According to the utility model, further, the top surface and the top surface of the bend are in the same plane.

[0008] According to the utility model, further, both the bushing inner tube and the bushing outer tube are integrally formed metal structures.

[0009] Compared with the prior art, the beneficial effect of the utility model is that by arranging a protrusion on the bushing inner tube, and the edges of the upper surface and the lower surface of the protrusion are transition arcs, changing the size of the transition arc can quickly increase the axial stiffness and meet the performance requirements of the automobile. Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of a new bushing structure of the utility model.

[0011] In the figure: 100 - inner tube of the bushing, 110 - protrusion, 120 - transition arc, 200 - rubber bushing, 210 - inner wall, 211 - groove, 220 - outer wall, 230 - top surface, 240 - bottom surface, 241 - rubber groove, 242 - rubber protrusion, 300 - outer tube of the bushing, 310 - bend. Detailed implementation mode

[0012] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0013] As Figure 1 shown, a new bushing structure in the embodiment of the present invention includes an inner tube 100 of the bushing. The inner tube 100 of the bushing is a long strip-shaped cylinder, and a radially extending protrusion 110 is formed in the middle part thereof. The protrusion 110 is connected to other parts connected thereto by a transition arc 120. The convex surface of the transition arc 120 faces away from the axis of the inner tube 100 of the bushing, forming an inner tube 100 of the bushing with a longitudinal section in the shape of "middle". An outer peripheral surface of the inner tube 100 of the bushing is integrally formed and connected with a rubber bushing 200. The rubber bushing 200 has an inner wall 210 and an outer wall 220. The inner wall 210 is attached to the outer wall of the inner tube 100 of the bushing, and the length corresponds to the length of the inner tube 100 of the bushing. The height of the outer wall 220 of the rubber bushing 200 is less than the height of the inner wall of the rubber bushing 200. A groove 211 matching the protrusion 110 is provided on the inner wall 210 of the rubber bushing 200. The contact surface between the groove 211 and the protrusion 110 is attached, which improves the assembly accuracy and facilitates the attachment of the contact surfaces of the two, thereby improving the assembly accuracy. An outer tube 300 of the bushing is integrally formed on the outer wall 220 of the rubber bushing 200. Bends 310 facing the rubber bushing 200 are provided at both the upper end and the lower end corresponding to the upper end of the outer tube 300 of the bushing. Preferably, both the inner tube 100 of the bushing and the outer tube 300 of the bushing are made of metal materials and are both integrally formed structures. The integral forming technology is the prior art and will not be elaborated here.

[0014] In order to improve the precision of the press-fitting of the bushing structure and avoid problems such as offset pressing or incomplete pressing, the rubber bushing 200 has a top surface 230 and a bottom surface 240 parallel to the top surface 230. The top surface 230 and the top surface of the bend 310 are in the same plane, and the bottom surface 240 is located below the bend 310 at the lower end of the bushing outer tube 300. A rubber groove 241 is formed in the bottom surface 240, and the opening of the rubber groove 241 faces downward, while a rubber protrusion 242 is formed. The rubber protrusion 242 corresponds to the bend 310 at the lower end of the bushing outer tube 300, and the outer peripheral surface of the rubber protrusion 242 is inclined inward, where the inner side refers to the side facing the bushing inner tube 100. Among them, when the bushing structure is stressed, the rubber groove 241 leaves a rubber deformation space, which is beneficial to improving the rubber life and avoiding rubber extrusion or bulging under stress, resulting in large strain.

[0015] Working principle: By adjusting the length of the bend 310 of the bushing outer tube 300 and the radian of the arc transition of the bushing inner tube 100, the width and thickness of the rubber bushing 200 located between the two are changed, and the change speed of the axial stiffness is increased. Increasing the radian of the arc transition of the bushing inner tube 100, that is, increasing the contact area between the outer surface of the transition arc 120 and the rubber bushing 200, and / or reducing the thickness of the rubber bushing 200. When the bushing outer tube 300 and the bushing inner tube 100 move axially, the relative surface between the rubber bushing 200 and the bushing inner tube 100 increases, and the axial stiffness increases faster.

[0016] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel bushing structure, comprising a bushing inner tube, characterized in that: A radially extending protrusion is formed in the middle part of the inner tube of the bushing, and the edges of the upper and lower surfaces of the protrusion are transition arcs. The outer circumference of the inner tube of the bushing is integrally formed with a rubber bushing, and the rubber bushing has an inner wall and an outer wall. The inner wall has a groove that matches the protrusion, and the groove fits the contact surface of the protrusion. The outer wall is integrally formed with the outer tube of the bushing, and the upper end of the outer tube of the bushing and the lower end corresponding to the upper end are both provided with a bend toward the rubber bushing.

2. The novel bushing structure according to claim 1 is characterized in that: The rubber bushing also has a top surface and a bottom surface parallel to the top surface. The bottom surface is located below the bend at the lower end of the bushing outer tube. A rubber groove is opened on the bottom surface. The rubber groove opens downward and forms a rubber protrusion. The rubber protrusion corresponds to the bend at the lower end of the bushing outer tube.

3. The novel bushing structure according to claim 2 is characterized in that: The outer peripheral surface of the rubber protrusion is inclined inwardly.

4. The novel bushing structure according to claim 2 is characterized in that: The top surface and the bent top surface are in the same plane.

5. The novel bushing structure according to claim 1 is characterized in that: The bushing inner tube and bushing outer tube are both integrally formed metal structures.

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