Buffer type rubber bushing for control arm
By designing a buffer-type control arm rubber bushing, and combining an outer and inner bushing tube with a T-shaped structure, the problem of frequent replacement caused by the deterioration of the rubber bushing performance was solved, enabling rapid replacement and reuse of the rubber bushing and reducing vehicle maintenance costs.
Patent Information
- Application Number
- CN202423158135.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing automotive control arm rubber bushings suffer from performance degradation due to factors such as temperature and mechanical stress during use, requiring frequent replacement, increasing maintenance costs and causing material waste.
Design a buffer-type control arm rubber bushing, which adopts an outer bushing tube and an inner bushing tube to form a T-shaped structure, and is combined with a rubber tube by a threaded connection. The rubber tube can be disassembled and replaced, and the outer bushing tube and the inner bushing tube can be reused.
This enables quick replacement and reuse of rubber bushings, reducing vehicle maintenance costs and minimizing material waste.
Smart Images
Figure CN223508038U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber bushing technology, specifically to a rubber bushing for a buffer-type control arm. Background Technology
[0002] As a guiding and force-transmitting component in the automotive suspension system, the control arm plays a crucial role. It not only transmits various forces acting on the wheels to the vehicle body but also ensures that the wheels follow a specific trajectory. Existing automotive control arms mostly use rubber bushings to connect to other components. These bushings are located within the through-holes of the control arm, absorbing impact forces, increasing the vibration damping of the chassis ring, improving passenger comfort, and effectively cushioning the load on the control arm, thus extending the vehicle's lifespan. However, during vehicle operation, the performance of the rubber bushings deteriorates rapidly due to factors such as temperature and mechanical stress. Replacing the rubber bushings increases vehicle maintenance costs. Therefore, we propose a cushioning-type control arm rubber bushing to reduce the replacement cost of rubber bushings. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a buffer-type control arm rubber bushing, which can reduce vehicle maintenance costs.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a buffer-type control arm rubber bushing, comprising an outer bushing tube, an inner bushing tube, and a rubber tube arranged coaxially; the outer bushing tube is a T-shaped structure composed of an outer bushing tube body and a first limiting ring; the inner bushing tube is a T-shaped structure composed of an inner bushing tube body and a second limiting ring; the outer bushing tube body and the inner bushing tube body are detachably connected; the rubber tube is sleeved on the outer bushing tube and / or the inner bushing tube and located between the first limiting ring and the second limiting ring; the outer diameter of the rubber tube is smaller than the outer diameter of the first limiting ring and the second limiting ring.
[0005] Preferably, the outer liner tube body has an internal thread on its inner circumference; the inner liner tube body has an external thread on its outer circumference that mates with the internal thread; the inner liner tube body passes through the outer liner tube body and extends to the first limiting ring; the rubber tube is fixedly sleeved on the outer liner tube body.
[0006] Preferably, the inner circumference of the first limiting ring is provided with a groove that communicates with the outer liner tube body; one end of the inner liner tube body extends into the groove; the groove is filled with thread-locking adhesive.
[0007] Preferably, it also includes two spring washers; each spring washer is sleeved on the rubber tube, and the two spring washers are respectively configured to correspond to the first limiting ring and the second limiting ring.
[0008] Preferably, the outer liner tube body abuts against the second limiting ring; the rubber tube is of the same length as the outer liner tube body.
[0009] Preferably, the outer liner tube body is provided with a guide key on its outer periphery; the inner side of the rubber tube is provided with a keyway that mates with the guide key.
[0010] Preferably, the guide key is a strip-shaped structure, and the length direction of the guide key is the same as the axial direction of the outer liner tube body.
[0011] Preferably, the length of the guide key is the same as the length of the rubber tube.
[0012] Preferably, the outer edges of both the first limiting ring and the second limiting ring are polygonal structures.
[0013] Preferably, the outer diameter of the first limiting ring is equal to the outer diameter of the second limiting ring.
[0014] Compared with the prior art, the beneficial effects of this utility model are: by setting a threaded outer liner and an inner liner with a T-shaped structure, and sleeved with a rubber tube on the outer liner, the rubber tube can be quickly replaced as a consumable during later maintenance by disassembling the outer liner and the inner liner. In this way, the outer liner and the inner liner can be reused, reducing vehicle maintenance costs. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the rubber bushing of this utility model;
[0016] Figure 2 This is a schematic cross-sectional view of the rubber bushing of this utility model along the axial direction.
[0017] Figure 3 This is a schematic diagram of the outer liner tube structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the inner liner tube structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the rubber tube structure of this utility model.
[0020] In the figure: 1 outer liner tube, 2 inner liner tube, 3 rubber tube, 4 spring washer, 11 outer liner tube body, 12 first limiting ring, 13 guide key, 14 groove, 21 inner liner tube body, 22 second limiting ring, 31 keyway. Detailed Implementation
[0021] The specific embodiments of this utility model 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 this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.
[0022] Existing rubber bushings, when exposed to factors such as temperature, dust, and mechanical stress during use, gradually lose their high elasticity, reducing their ability to absorb impact and consequently decreasing the vibration damping performance of the vehicle's underbody ring. Ultimately, this results in reduced passenger comfort, necessitating regular maintenance of the rubber bushings. Current practice involves directly replacing old rubber bushings with new ones. However, the old bushings, while showing signs of rubber aging, retain structural steel components in good condition. Discarding the entire old bushing is wasteful. Therefore, this application proposes a replaceable rubber bushing component to address this wastefulness.
[0023] See Figure 1-5 In one embodiment of this utility model, a buffer-type control arm rubber bushing includes: an outer bushing tube 1, an inner bushing tube 2, and a rubber tube 3 arranged coaxially. The outer bushing tube 1 and the inner bushing tube 2 form a structural support component. The rubber tube 3 is sleeved on the outer periphery of the structural support component. The detachable structure of the outer bushing tube 1, the inner bushing tube 2, and the rubber tube 3 allows for easy replacement of the rubber tube 3 while retaining the outer bushing tube 1 and the inner bushing tube 2, thereby realizing the reuse of the structural support component and reducing vehicle maintenance costs.
[0024] Specifically, the outer liner tube 1 is a T-shaped structure composed of an outer liner tube body 11 and a first limiting ring 12. The first limiting ring 12 is coaxially disposed at one end of the outer liner tube body 11, and the inner diameter of the first limiting ring 12 is the same as the inner diameter of the outer liner tube body 11. An internal thread is provided on the inner side of the outer liner tube body 11. Two guide keys 13 are also provided on the outer periphery of the outer liner tube body 11. The two guide keys 13 are symmetrically distributed around the axis of the outer liner tube body 11, and the guide keys 13 extend along the axis of the outer liner tube body 11 to the first limiting ring 12. Furthermore, a groove 14 is provided on the inner periphery of the end of the first limiting ring 12 away from the outer liner tube body 11.
[0025] The inner liner tube 2 is a T-shaped structure composed of an inner liner tube body 21 and a second limiting ring 22. The second limiting ring 22 is coaxially disposed at one end of the inner liner tube body 21, and the inner diameter of the second limiting ring 22 is the same as the inner diameter of the inner liner tube body 21. The outer circumference of the inner liner tube body 21 is provided with an external thread, which matches the internal thread. After assembly, the inner liner tube body 21 passes through the outer liner tube 1 and extends into the groove 14. The inner liner tube body 21 and the outer liner tube body 11 are connected by threads, and the outer liner tube body 11 abuts against the second limiting ring 22.
[0026] The rubber tube 3 is sleeved on the outer liner tube body 11, and both ends of the rubber tube 3 abut against the first limiting ring 12 and the second limiting ring 22, respectively. In practice, the inner liner tube body 21 can be inserted into the through hole of the control arm first, at which point the second limiting ring 22 is located outside the through hole and closes it. Then, the rubber tube 3 is sleeved on the outer liner tube body 11 and inserted together with the outer liner tube 1 from the other end of the through hole. By rotating the first limiting ring 12, the rubber tube 3 can be pressed into the through hole until the first limiting ring 12 abuts against the control arm. It can be understood that the outer diameters of both the first limiting ring 12 and the second limiting ring 22 must be larger than the inner diameter of the through hole, and the rubber tube 3 is tightly fitted to the inner wall of the through hole. It can also be understood that at this time, the outer diameter of the rubber tube 3 is smaller than the outer diameters of the first limiting ring 12 and the second limiting ring 22.
[0027] The rubber tube 3 has two keyways 31 on its inner side that cooperate with the guide key 13. After the rubber tube 3 is sleeved on the outer liner tube body 11, the guide key 13 is located in the keyway 31. The guide key 13 can guide and facilitate the installation of the rubber tube 3, and also restrict the circumferential sliding of the rubber tube 3 relative to the outer liner tube 1, thereby improving the overall integrity of the rubber bushing.
[0028] In one embodiment, to improve the tightness of the connection between the rubber bushing and the control arm, the rubber bushing further includes two spring washers 4. The two spring washers 4 are sleeved on the outer periphery of the rubber tube 3, and the two spring washers 4 are respectively located between the first limiting ring 12 and the control arm and the second limiting ring 22 and the control arm. That is, the two spring washers 4 are located on the outside of the through hole, which is used to assist the rubber bushing body in being installed on the control arm. The placement of the spring washers 4 can effectively prevent the outer liner tube 1 and the inner liner tube 2 from loosening and separating from each other.
[0029] In one embodiment, after the outer liner 1 and the inner liner 2 are connected, the groove 14 needs to be filled with thread-locking adhesive. This method can effectively prevent the outer liner 1 and the inner liner 2 from loosening and ensure the stability of the structural support.
[0030] In one embodiment, the outer edges of the first limiting ring 12 and the second limiting ring 22 are both polygonal structures to facilitate the separation of the outer liner tube 1 and the inner liner tube 2 by rotating the wrench; the outer diameter of the first limiting ring 12 is the same as the outer diameter of the second limiting ring 22.
[0031] This technical solution involves setting up a threaded, T-shaped outer liner and an inner liner, with a rubber tube fitted onto the outer liner. During later maintenance, the rubber tube, as a consumable, can be quickly replaced by disassembling the outer liner and the inner liner, thus allowing for the reuse of the outer and inner liner and reducing vehicle maintenance costs.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A rubber bushing for a buffer-type control arm, characterized in that: It includes an outer liner tube (1), an inner liner tube (2), and a rubber tube (3) arranged coaxially; the outer liner tube (1) is a T-shaped structure composed of an outer liner tube body (11) and a first limiting ring (12); the inner liner tube (2) is a T-shaped structure composed of an inner liner tube body (21) and a second limiting ring (22); the outer liner tube body (11) and the inner liner tube body (21) are detachably connected; the rubber tube (3) is sleeved on the outer liner tube (1) and / or the inner liner tube (2) and is located between the first limiting ring (12) and the second limiting ring (22); the outer diameter of the rubber tube (3) is smaller than the outer diameter of the first limiting ring (12) and the second limiting ring (22).
2. The rubber bushing for a buffer-type control arm according to claim 1, characterized in that: The inner circumference of the outer liner tube body (11) is provided with an internal thread; the outer circumference of the inner liner tube body (21) is provided with an external thread that mates with the internal thread; the inner liner tube body (21) passes through the outer liner tube body (11) and extends to the first limiting ring (12); the rubber tube (3) is fixedly sleeved on the outer liner tube body (11).
3. The rubber bushing for a buffer-type control arm according to claim 2, characterized in that: The inner circumference of the first limiting ring (12) is provided with a groove (14) that communicates with the outer liner tube body (11); one end of the inner liner tube body (21) extends into the groove (14); the groove (14) is filled with thread locking adhesive.
4. The rubber bushing for a buffer-type control arm according to claim 1, characterized in that: It also includes two spring washers (4); the spring washers (4) are both sleeved on the rubber tube (3), and the two spring washers (4) are respectively set to correspond to the first limiting ring (12) and the second limiting ring (22).
5. The rubber bushing for a buffer-type control arm according to claim 1, characterized in that: The outer liner tube body (11) abuts against the second limiting ring (22); the rubber tube (3) is the same length as the outer liner tube body (11).
6. The rubber bushing for a buffer-type control arm according to claim 1, characterized in that: The outer liner tube body (11) is provided with a guide key (13) on its outer periphery; the rubber tube (3) is provided with a keyway that cooperates with the guide key (13) on its inner side.
7. The rubber bushing for a buffer-type control arm according to claim 6, characterized in that: The guide key (13) is a strip structure, and the length direction of the guide key (13) is the same as the axial direction of the outer liner tube body (11).
8. The rubber bushing for a buffer-type control arm according to claim 6, characterized in that: The length of the guide key (13) is the same as the length of the rubber tube (3).
9. The rubber bushing for a buffer-type control arm according to claim 1, characterized in that: The outer edges of the first limiting ring (12) and the second limiting ring (22) are both polygonal structures.
10. A rubber bushing for a buffer-type control arm according to claim 1, characterized in that: The outer diameter of the first limiting ring (12) is equal to the outer diameter of the second limiting ring (22).