An axial stiffness adjustable bushing

Abstract

The utility model discloses an axial stiffness adjustable bushing, axial stiffness adjustable bushing includes the inner tube, is located the outer tube of inner tube, sets up the flexible buffer piece between the inner tube with outer tube and axial baffle, in the axial direction of inner tube, the inner tube has the protruding portion of protruding the outer tube setting, axial baffle with protruding portion detachable fixed connection or welding connection.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an axial stiffness adjustable bushing. Background Technology

[0002] As people's living standards improve, they are paying more and more attention to the comfort of vehicles while driving.

[0003] Bushings play a crucial role in automotive suspension and steering systems, such as reducing friction between components, absorbing vibrations, and ensuring proper component positioning. However, with the automotive industry's increasing demands for comfort and reliability, traditional automotive bushings have gradually revealed some problems. Modern vehicle development cycles are very short, and traditional bushing development processes cannot meet the needs of rapid vehicle assembly, calibration, and testing. Designing a bushing with easily adjustable axial stiffness has been a long-standing goal for those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an axial stiffness adjustable bushing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An axial stiffness adjustable bushing includes an inner tube, an outer tube disposed outside the inner tube, a flexible buffer disposed between the inner tube and the outer tube, and an axial baffle. In the axial direction of the inner tube, the inner tube has a protrusion that protrudes from the outer tube. The axial baffle is detachably fixedly connected to or welded to the protrusion.

[0007] In one embodiment, the outer tube has a tubular outer tube body and an outer tube periphery disposed at the axial end of the outer tube body, a portion of the flexible buffer is disposed above the outer tube periphery, and the axial baffle is pressed on the portion of the flexible buffer.

[0008] In one embodiment, the contact area between the axial baffle and the flexible buffer is adjustable.

[0009] In one embodiment, the thickness of the axial baffle is adjustable.

[0010] In one embodiment, the inner tube has a tubular inner tube body and a protrusion at the axial end of the inner tube body. The inner tube has a hollow inner tube through hole. An annular groove is formed on the outer wall of the top of the inner tube to form the protrusion. The annular groove is used to install the axial baffle.

[0011] In one embodiment, the annular groove is configured with an interference fit with the axial baffle.

[0012] In one embodiment, the protrusion has an opening in the middle, and the diameter of the opening of the protrusion is set from bottom to top, increasing from small to large.

[0013] In one embodiment, the axial baffle has an axial baffle hole in the middle that engages with the protrusion, and the diameter of the axial baffle hole is set from bottom to top in an increasing manner.

[0014] In one embodiment, a buffer space exists between the axial baffle and the flexible buffer.

[0015] In one embodiment, the flexible buffer is made of rubber.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] This utility model features an adjustable axial stiffness bushing. By providing a protrusion on the inner tube that is detachably connected to an axial baffle, the axial stiffness of the bushing can be adjusted by replacing different axial baffles. This greatly shortens the sample production cycle, reduces sample production costs, and meets the requirements for rapid vehicle assembly, calibration, and testing. Attached Figure Description

[0018] Figure 1 This is a perspective view of an axial stiffness adjustable bushing according to an embodiment of the present invention.

[0019] Figure 2 This is a frontal schematic diagram of the bidirectional limiting bushing in one embodiment of the present invention;

[0020] Figure 3 for Figure 2 A cross-sectional view of the bidirectional limiting bushing along the AA direction;

[0021] Figure 4 This is an axial baffle in one embodiment of the present invention;

[0022] Figure 5 This is another axial baffle in one embodiment of the present invention.

[0023] The numbers on the map are:

[0024] 1-Inner tube; 11-Inner tube body; 12-Protrusion; 13-Inner tube through hole; 14-Annular groove; 15-Opening of protrusion; 2-Outer tube; 21-Outer tube body; 22-Outer tube periphery; 3-Flexible buffer; 4-Axial baffle; 41-Axial baffle hole; 42-Allowing groove. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this utility model, the directions such as "front," "rear," "left," "right," "up," and "down" are explained as follows: Figure 1 As shown in the figure, the left side is "left", the right side is "right", the top side is "up", the bottom side is "down", and the direction perpendicular to the viewpoint is "forward" and "backward". The above definitions of directions are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figure 1-5 As shown, in some embodiments of this utility model, the axial stiffness adjustable bushing includes an inner tube 1, an outer tube 2 disposed outside the inner tube 1, a flexible buffer 3 disposed between the inner tube 1 and the outer tube 2, and an axial baffle 4.

[0028] The outer tube 2 has a tubular outer tube body 21 and an outer tube periphery 22 disposed at the axial end of the outer tube body 21. The outer tube periphery 22 is arranged in a ring shape. In one embodiment, the outer tube 2 can be made of extruded aluminum.

[0029] The inner tube 1 has a tubular inner tube body 11 and a protrusion 12 located at the axial end of the inner tube body 11. The protrusion 12 protrudes from the outer tube 2 in the axial direction of the inner tube 1. In one embodiment, the top of the inner tube 1 is higher than the top of the outer tube 2. The inner tube 1 has a hollow inner tube through-hole 13. An annular groove 14 is formed on the outer wall of the top of the inner tube 1 to create the protrusion 12. The annular groove 14 is used to install an axial baffle 4. The protrusion 12 has an opening 15 in the middle, which communicates with the inner tube through-hole 13. The diameter of the opening 15 increases from bottom to top to better engage the protrusion 12 with the axial baffle 4 and prevent it from falling off. The inner tube 1 can be made of extruded aluminum.

[0030] In one embodiment, the flexible buffer 3 is made of rubber and is vulcanized and installed in the radial direction between the inner tube 1 and the outer tube 2, and on the upper part of the outer tube periphery 22.

[0031] The axial baffle 4 is pressed onto the upper part of the flexible buffer 3 on the outer periphery 22 of the outer tube and is in direct contact with the flexible buffer 3. The axial baffle 4 has an axial baffle hole 41 in the middle that engages with the protrusion 12. The axial baffle 4 is detachably fixed or welded to the protrusion 15 through the axial baffle hole 41, so that different axial baffles 4 can be adapted to the bushing according to the actual situation. The opening diameter of the axial baffle hole 41 is set from bottom to top from small to large. In one embodiment, the annular groove 14 is interference-fitted with the axial baffle 4.

[0032] The contact area between the axial baffle 4 and the flexible buffer 3 can be adjusted. For example... Figure 4 As shown, the axial baffle 4 is annular in shape, with a relief groove 42 in its middle to reduce contact with the flexible buffer 3. Figure 5 As shown, the cross-sectional area of ​​the axial baffle 4 at this time is less than Figure 4 The axial baffle 4 in the middle also reduces its contact area with the flexible buffer 3.

[0033] In one embodiment, the thickness of the axial baffle 4 is adjustable.

[0034] In one embodiment, there is a buffer space between the axial baffle 4 and the flexible buffer 3, and the buffer space is also adjustable in size.

[0035] The axial stiffness of the bushing can be adjusted by adjusting the contact area between the axial baffle 4 and the flexible buffer 3, the thickness of the axial baffle 4, and the size of the buffer space between the axial baffle 4 and the flexible buffer 3.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An axially stiffness adjustable bushing, characterized in that, The axial stiffness adjustable bushing includes an inner tube, an outer tube disposed outside the inner tube, a flexible buffer disposed between the inner tube and the outer tube, and an axial baffle. In the axial direction of the inner tube, the inner tube has a protrusion that protrudes from the outer tube. The axial baffle is detachably fixedly connected to or welded to the protrusion.

2. The axial stiffness adjustable bushing according to claim 1, characterized in that: The outer tube has a tubular outer tube body and an outer tube periphery disposed at the axial end of the outer tube body. A portion of the flexible buffer is disposed above the outer tube periphery, and the axial baffle is pressed on the portion of the flexible buffer.

3. The axial stiffness adjustable bushing according to claim 2, characterized in that: The contact area between the axial baffle and the flexible buffer can be adjusted.

4. The axial stiffness adjustable bushing according to claim 1, characterized in that: The thickness of the axial baffle is adjustable.

5. The axial stiffness adjustable bushing according to claim 1, characterized in that: The inner tube has a tubular inner tube body and a protrusion at the axial end of the inner tube body. The inner tube has a hollow inner tube through hole. An annular groove is formed on the outer wall at the top of the inner tube to form the protrusion. The annular groove is used to install the axial baffle.

6. The axial stiffness adjustable bushing according to claim 5, characterized in that: The annular groove is configured to be interference-fitted with the axial baffle.

7. The axial stiffness adjustable bushing according to claim 5, characterized in that: The protrusion has an opening in the middle, and the diameter of the opening is set from bottom to top, increasing from small to large.

8. The axial stiffness adjustable bushing according to claim 7, characterized in that: The axial baffle has an axial baffle hole in the middle that engages with the protrusion, and the diameter of the axial baffle hole is set from bottom to top from small to large.

9. The axial stiffness adjustable bushing according to claim 1, characterized in that: There is a buffer space between the axial baffle and the flexible buffer.

10. The axial stiffness adjustable bushing according to claim 1, characterized in that: The flexible buffer is made of rubber.

Images