Split double-limiting bushing
By designing a split-type double-limiting bushing, and using an inner tube, a main outer tube, and a split outer tube combined with a flexible buffer assembly, the problems of poor limiting effect and insufficient durability in the existing technology are solved, achieving faster response and improved durability to meet different usage needs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- VORWERK AUTOTEC (SUZHOU) LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing technology, the limiting function of the subframe bushing is not ideal, its durability is insufficient, and it is difficult to provide effective support and cushioning when the vehicle accelerates, decelerates and experiences sudden large load impacts.
A split-type double-limiting bushing is designed, including an inner tube, a main outer tube, and a split outer tube. A double-limiting structure is provided by the combination of a flexible buffer component and a flanged part. The buffering effect can be adjusted by adjusting the distance of the impact blocks. The hardness of the flexible buffer component can be adjusted according to the requirements.
It achieves faster braking and acceleration response, improves bushing durability, meets the comfort and handling requirements of different scenarios, and provides flexible cushioning adjustment.
Smart Images
Figure CN224396995U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically to a split-type double-limiting bushing. Background Technology
[0002] As people's living standards improve, they are paying more and more attention to the comfort performance of vehicles. Subframe bushings can be used for flexible buffer connections with the vehicle body. Their main function is to provide a forced limiting effect when the vehicle accelerates, decelerates, or experiences sudden large load impacts, so that the vehicle body can stabilize more quickly. How to design a bushing with better limiting effect and higher durability has always been a goal pursued by those skilled in the art. Utility Model Content
[0003] The purpose of this invention is to overcome the defects in the prior art and provide a split-type double-limiting bushing.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A split-type double-limiting bushing, the split-type double-limiting bushing comprising:
[0006] Inner tube, the inner tube being tubular;
[0007] The main outer tube is sleeved outside the inner tube. The main outer tube includes a tubular first body and a first flange portion disposed at one end of the first body. The first flange portion is disposed circumferentially along the end of the first body.
[0008] The separate outer tube includes a tubular second main body and a second flange portion disposed at one end of the second main body. The second flange portion is disposed circumferentially along the end of the second main body. The other end of the second main body without the second flange portion and the other end of the first main body without the first flange portion are sequentially abutted against each other along the axial direction of the inner tube.
[0009] A flexible buffer assembly, comprising a main body buffer portion disposed between the first main body and the inner tube, a first covering portion covering the outer surface of the first flange portion, and a second covering portion covering the outer surface of the second flange portion.
[0010] In one embodiment, the axial length of the first body is greater than the axial length of the second body.
[0011] In one embodiment, the diameter of the first body is equal to the diameter of the second body.
[0012] In one embodiment, a split buffer space is provided between the outer tube and the inner tube to allow the flexible buffer assembly to deform.
[0013] In one embodiment, a main buffer space is provided between the main outer tube and the inner tube to allow the flexible buffer assembly to deform.
[0014] In one embodiment, the main buffer space includes a first buffer space disposed between the first flange and the inner tube, and a second buffer space disposed between the other end of the first body and the inner tube.
[0015] In one embodiment, the second buffer space is connected to the split buffer space.
[0016] In one embodiment, the total length of the second buffer space and the split buffer space along the axial direction of the inner tube is greater than the length of the first buffer space along the axial direction of the inner tube.
[0017] In one embodiment, the first body and the first flange are integrally formed.
[0018] In one embodiment, the outer wall of the inner tube has a recess, and at least a portion of the main body buffer portion is filled in the recess.
[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0020] 1. The split-type double-limiting bushing of this utility model is provided with a split outer tube. When the split-type double-limiting bushing is installed in place, the second flange of the split outer tube is axially engaged with a striking block, and the first flange of the main outer tube is axially engaged with another striking block, thereby realizing a double-limiting structure, which can provide faster braking and acceleration response.
[0021] 2. The split-type double-limiting bushing of this utility model can freely adjust the distance between the split-type double-limiting bushing and the impact block to meet different shock absorption requirements;
[0022] 3. The split-type double-limiting bushing of this utility model provides a double-limiting structure, and the second flange in the split outer tube can provide support when the split-type double-limiting bushing impacts the impact block, thereby improving the durability of the bushing.
[0023] 4. The split-type double-limiting bushing of this utility model has the main outer tube and the split outer tube set separately, which can more flexibly meet the needs of different scenarios. For example, in order to pursue comfort, the hardness of the main buffer part can be made softer, and in order to pursue maneuverability, the hardness of the main buffer part, the first covering part and the second covering part can be increased, etc. Attached Figure Description
[0024] Figure 1 This is a cross-sectional view of the split double-limiting bushing after it has been installed in place according to one embodiment of the present utility model;
[0025] The numbers on the map are:
[0026] 1-Inner tube; 11-Inner recess; 21-First main body; 22-First flange; 31-Second main body; 32-Second flange; 41-Main body buffer; 42-First covering; 43-Second covering; 44-Separated buffer space; 45-First buffer space; 46-Second buffer space; 5-Annular mounting piece; 6-Left impact block; 7-Right impact block; 8-Bolt; 9-Nut. Detailed Implementation
[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0028] 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.
[0029] like Figure 1 As shown, in some embodiments of this utility model, the split double-limiting bushing includes an inner tube 1, a main outer tube, a split outer tube, and a flexible buffer assembly.
[0030] The inner tube 1 is tubular. Specifically, the inner tube can be made of extruded aluminum, which is lightweight and has good corrosion resistance.
[0031] The outer tube is sleeved outside the inner tube 1. The outer tube includes a tubular first body 21 and a first flange 22 disposed at the left end of the first body 21. The first flange 22 is circumferentially disposed along the left end of the first body 21. In some embodiments, the first body 21 and the first flange 22 are integrally formed. Specifically, the outer tube can be made of extruded aluminum, which is lightweight and has good corrosion resistance.
[0032] The outer tube includes a tubular second main body 31 and a second flange 32 disposed at the right end of the second main body 31. The second flange 32 is circumferentially disposed along the right end of the first main body 21. The left end of the second main body 31 and the right end of the first main body 21 are sequentially abutted against each other along the axial direction of the inner tube. Specifically, in some embodiments, no snap-fit structure is provided between the outer tube and the main outer tube. The outer tube and the main outer tube are radially clamped by an external annular mounting member 5 to prevent them from falling out. Specifically, the main outer tube can be made of extruded aluminum, which is lightweight and has good corrosion resistance.
[0033] In some embodiments, the axial length of the first body is greater than the axial length of the second body, and the diameter of the first body is equal to the diameter of the second body. During impact, the first body and the second body abut against each other.
[0034] The flexible buffer assembly includes a main buffer portion 41 disposed between the first main body and the inner tube 1, a first covering portion 42 covering the outer surface of the first flange portion 22, and a second covering portion 43 covering the outer surface of the second flange portion 32. Specifically, the flexible buffer assembly can select rubber of different hardness according to the needs of the scenario. For example, to pursue comfort, the hardness of the main buffer portion 41 can be made softer. To pursue controllability, the hardness of the main buffer portion 41, the first covering portion 42 and the second covering portion 43 can be increased. To improve durability and make the braking response faster, the hardness of the first covering portion 42 and the second covering portion 43 can be increased.
[0035] A split buffer space 44 for the deformation of the flexible buffer assembly is provided between the outer tube and the inner tube 1. A main buffer space for the deformation of the flexible buffer assembly is provided between the main outer tube and the inner tube 1. The main buffer space includes a first buffer space 45 disposed between the first flange 22 and the inner tube 1 and a second buffer space 46 disposed between the left end of the first main body 21 and the inner tube 1. The second buffer space 46 is connected to the split buffer space 44. The total length of the second buffer space 46 and the split buffer space 44 along the axial direction of the inner tube 1 is greater than the length of the first buffer space 45 along the axial direction of the inner tube 1. In some embodiments, the outer wall of the inner tube 1 has a concave portion 11, and at least a portion of the main body buffer portion 41 is filled in the concave portion 11. By providing the concave portion 11, the space of the rubber is increased, thereby better buffering the load impact and improving durability.
[0036] When installing the split-type double-limiting bushing of this utility model, the main outer tube and the split outer tube are respectively clamped in the external annular mounting part 5. A left impact block 6 is set on the left side of the split-type double-limiting bushing, and a right impact block 7 is set on the right side. A bolt 8 is screwed into the inner tube 1 to connect the left impact block 6, the right impact block 7 and the split-type double-limiting bushing together. The distance between the split-type double-limiting bushing and the left impact block 6 and the right impact block 7 can be controlled by adjusting the tightness of the nut 9 on the bolt 8, thereby controlling the buffering effect. During impact, the left impact block 6 contacts the first covering part 42, and the first flange part 22 provides support for the impact. The right impact block 6 contacts the second covering part 43, and the second flange part 32 provides support for the impact.
[0037] 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. A split-type double-limiting bushing, characterized in that, The split-type double-limiting bushing includes: Inner tube, the inner tube being tubular; The main outer tube is sleeved outside the inner tube. The main outer tube includes a tubular first body and a first flange portion disposed at one end of the first body. The first flange portion is disposed circumferentially along the end of the first body. The separate outer tube includes a tubular second main body and a second flange portion disposed at one end of the second main body. The second flange portion is disposed circumferentially along the end of the second main body. The other end of the second main body without the second flange portion and the other end of the first main body without the first flange portion are sequentially abutted against each other along the axial direction of the inner tube. A flexible buffer assembly, comprising a main body buffer portion disposed between the first main body and the inner tube, a first covering portion covering the outer surface of the first flange portion, and a second covering portion covering the outer surface of the second flange portion.
2. The split-type double-limiting bushing according to claim 1, characterized in that: The axial length of the first body is greater than the axial length of the second body.
3. The split-type double-limiting bushing according to claim 1, characterized in that: The diameter of the first body is equal to the diameter of the second body.
4. The split-type double-limiting bushing according to claim 1, characterized in that: A separate buffer space is provided between the outer tube and the inner tube to allow the flexible buffer assembly to deform.
5. The split-type double-limiting bushing according to claim 4, characterized in that: A main buffer space is provided between the outer tube and the inner tube to allow the flexible buffer assembly to deform.
6. The split-type double-limiting bushing according to claim 5, characterized in that: The main buffer space includes a first buffer space disposed between the first flange and the inner tube, and a second buffer space disposed between the other end of the first body and the inner tube.
7. The split-type double-limiting bushing according to claim 6, characterized in that: The second buffer space is connected to the split buffer space.
8. The split-type double-limiting bushing according to claim 7, characterized in that: The total length of the second buffer space and the split buffer space along the axial direction of the inner tube is greater than the length of the first buffer space along the axial direction of the inner tube.
9. The split-type double-limiting bushing according to claim 1, characterized in that: The first main body and the first flange are integrally formed.
10. The split-type double-limiting bushing according to any one of claims 1-9, characterized in that: The outer wall of the inner tube has a concave portion, and at least a portion of the main body buffer portion is filled in the concave portion.