A shock absorbing drum bushing

Abstract

The utility model discloses a shock attenuation drum bushing, including the inner bushing, the surface of inner bushing is equipped with shock attenuation rubber ball, both ends of shock attenuation rubber ball all have the groove of putting in, the inlaying of groove has the locating end cover, the center of locating end cover is equipped with the through groove, under the action of through groove can make locating end cover pass in the inner bushing, wherein, be equipped with the internal thread groove in through groove, the position of corresponding internal thread groove of the surface of inner bushing has the external thread groove, and rotating locating end cover can make its threaded assembly in the surface of inner bushing.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, and in particular to a shock-absorbing drum-shaped bushing. Background Technology

[0002] Shock absorber bushings are key components installed in automotive suspension systems. They are primarily used to dampen vibrations, reduce noise, and connect mechanical components, playing a vital role in improving vehicle comfort and handling stability. Shock absorber bushings (also known as damper bushings) are core connecting components of the suspension system, mainly composed of a metal sleeve and rubber / elastomer.

[0003] Conventional damping drum bushings mostly consist of a bushing tube and a rubber ball fitted on the surface of the bushing tube. In practical applications, it has been found that because the surface of the bushing tube used to fit the rubber ball is smooth, relative sliding can easily occur between them. This can cause the end of the bushing tube to be excessively exposed outside the rubber ball or retracted inside the rubber ball, which can easily affect the alignment and assembly of the bushing and the damping effect after assembly. Therefore, a damping drum bushing is proposed. Utility Model Content

[0004] Therefore, it is necessary to provide a shock-absorbing drum-shaped bushing to address the above-mentioned technical problems. A positioning end cap is set at the end of the conventional inner liner tube. After the shock-absorbing rubber ball is sleeved, it can be sealed on both sides, thus ensuring the stability of the assembly between the shock-absorbing rubber ball and the surface of the inner liner tube and preventing it from sliding on its own.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A shock-absorbing drum-shaped bushing includes an inner liner tube, on the surface of which a shock-absorbing rubber ball is fitted. Both ends of the shock-absorbing rubber ball have insertion grooves, and a positioning end cap is embedded in the insertion groove. A through groove is formed at the center of the positioning end cap, allowing the positioning end cap to pass through the inner liner tube under the action of the through groove.

[0007] The passage groove is provided with an internal thread groove, and the surface of the inner liner tube has an external thread groove at the position corresponding to the internal thread groove. The rotating positioning end cap can be threaded onto the surface of the inner liner tube.

[0008] Furthermore, an inner positioning rubber plate is distributed on the outer side of the inner liner tube, and a shock-absorbing cavity is opened inside the shock-absorbing rubber ball for the inner positioning rubber plate to pass through. The shock-absorbing cavity is connected to the insertion grooves at both ends.

[0009] Furthermore, there are two inner positioning rubber plates, which are symmetrically distributed on both sides of the surface of the inner liner tube.

[0010] Furthermore, the positioning end cap includes a connecting part and a positioning part, wherein the positioning part is sleeved on the outside of the connecting part and integrally formed therewith.

[0011] Furthermore, a dustproof part is formed on the inner side of the connecting part extending inward, and a dustproof groove is provided on the surface of the shock-absorbing rubber ball at the position corresponding to the dustproof part, and the dustproof groove is in communication with the insertion groove.

[0012] Furthermore, the connecting part and the positioning part are connected on the inner side to form a step, and the corner of the step has an arc chamfer.

[0013] Furthermore, the connecting part is recessed outward and inward to form an inner recess, which allows the outer end of the inner liner tube to be flush with the outer edge of the through groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The shock-absorbing drum-shaped bushing provided by this utility model has positioning end caps set at both ends of the conventional inner liner tube. After the shock-absorbing rubber ball is sleeved on the surface of the inner liner tube, a positioning structure can be formed at both ends. This can ensure the relative position stability between the shock-absorbing rubber ball and the inner liner tube, and avoid the spontaneous sliding that would affect subsequent assembly and application.

[0016] Meanwhile, the design of external and internal threaded grooves can achieve the positioning effect of shock-absorbing rubber balls, while also facilitating actual assembly and application, and making it convenient for the rotation, disassembly, and assembly of the positioning end cap.

[0017] By setting the inner positioning rubber plate and the damping cavity, after the damping rubber ball is sleeved on the surface of the inner liner tube, the damping cavity can slide along the length direction of the inner positioning rubber plate. This ensures the axial positioning effect between the damping rubber ball and the inner liner tube, and further ensures the overall fixing effect after the damping rubber ball is assembled. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of the shock-absorbing drum-shaped bushing provided by this utility model;

[0019] Figure 2 A schematic diagram of the disassembly structure of the shock-absorbing drum-shaped bushing provided by this utility model;

[0020] Figure 3 A partial structural schematic diagram of the shock-absorbing drum-shaped bushing provided by this utility model;

[0021] Figure 4 A cross-sectional view of the shock-absorbing drum-shaped bushing provided by this utility model;

[0022] Figure 5 The shock-absorbing drum-shaped bushing provided by this utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0023] The markings in the diagram are explained as follows:

[0024] 1. Inner liner tube; 11. External threaded groove; 13. Inner positioning rubber plate;

[0025] 2. Shock-absorbing rubber ball; 21. Insertion groove; 22. Shock-absorbing cavity; 23. Dustproof groove;

[0026] 3. Positioning end cap; 31. Through groove; 32. Internal thread groove; 33. Connecting part; 34. Positioning part; 35. Dustproof part; 36. Step position; 37. Curved chamfer; 38. Recessed part. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-5 As shown, a shock-absorbing drum-shaped bushing includes an inner liner tube 1. A shock-absorbing rubber ball 2 is fitted on the surface of the inner liner tube 1. Both ends of the shock-absorbing rubber ball 2 have insertion grooves 21. A positioning end cap 3 is embedded in the insertion groove 21. A through groove 31 is opened at the center of the positioning end cap 3. The positioning end cap 3 can pass through the inner liner tube 1 under the action of the through groove 31.

[0029] The passage groove 31 is provided with an internal thread groove 32, and the surface of the inner liner tube 1 has an external thread groove 11 at the position corresponding to the internal thread groove 32. The rotating positioning end cap 3 can be threaded onto the surface of the inner liner tube 1.

[0030] In practical applications, the shock-absorbing rubber ball 2 is first fitted onto the surface of the inner liner tube 1. Then, the positioning end cap 3 is aligned with the end of the inner liner tube 1 and rotated. This creates a threaded fit between the positioning end cap 3 and the inner liner tube 1. Finally, when the positioning end cap 3 is rotated into place, it can abut against the surface of the shock-absorbing rubber ball 2, thereby forming a positioning structure at both ends of the shock-absorbing rubber ball 2. This prevents the shock-absorbing rubber ball 2 from sliding freely in the length direction relative to the inner liner tube 1, thus facilitating actual assembly and subsequent applications.

[0031] The outer side of the inner liner tube 1 is provided with an inner positioning rubber plate 13, and the inside of the shock-absorbing rubber ball 2 is provided with a shock-absorbing cavity 22 for the inner positioning rubber plate 13 to pass through. The shock-absorbing cavity 22 is connected to the insertion grooves 21 at both ends.

[0032] like Figure 3 and Figure 4 As shown, when the shock-absorbing rubber ball 2 is assembled on the surface of the inner liner tube 1, the shock-absorbing cavity 22 and the inner positioning rubber plate 13 need to be aligned in position. This allows the shock-absorbing rubber ball 2 to slide into the surface of the inner liner tube 1 along the length direction. This can prevent axial sliding between the shock-absorbing rubber ball 2 and the inner liner tube 1 after assembly, thereby further ensuring the assembly stability of the shock-absorbing rubber ball 2.

[0033] The number of inner positioning rubber plates 13 is two, and the two inner positioning rubber plates 13 are symmetrically distributed on both sides of the surface of the inner liner tube 1. In this embodiment, the number of inner positioning rubber plates 13 is two. However, in actual applications, the number of inner positioning rubber plates 13 can be reasonably adjusted according to the actual application situation. In this embodiment, the specific number is not limited to one.

[0034] The positioning end cap 3 includes a connecting part 33 and a positioning part 34, wherein the positioning part 34 is sleeved on the outside of the connecting part 33 and integrally formed therewith;

[0035] Furthermore, such as Figure 4 and Figure 5 As shown, the inner side of the connecting part 33 extends inward to form a dustproof part 35, and the surface of the shock-absorbing rubber ball 2 has a dustproof groove 23 at the position corresponding to the dustproof part 35. The dustproof groove 23 is connected to the insertion groove 21.

[0036] The dustproof part 35 is a ring design. Therefore, when the positioning end cover 3 is rotated into place on the surface of the inner liner tube 1, the dustproof part 35 can be completely embedded in the corresponding dustproof groove 23. This can block external dust and effectively reduce the situation where dust falls into the shock-absorbing cavity 22 through the gap between the shock-absorbing rubber ball 2 and the positioning end cover 3.

[0037] The connecting part 33 and the positioning part 34 are connected on the inner side to form a step 36, and the corner of the step 36 has an arc chamfer 37.

[0038] The connecting part 33 has an inward and outward recessed portion 38, which allows the outer end of the inner liner tube 1 to be flush with the outer edge of the through groove 31.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A shock absorbing drum bushing characterized by, Includes an inner liner tube (1), on the surface of which a shock-absorbing rubber ball (2) is fitted, and both ends of the shock-absorbing rubber ball (2) have insertion grooves (21), and a positioning end cap (3) is embedded in the insertion groove (21). A through groove (31) is provided at the center of the positioning end cap (3), and the positioning end cap (3) can pass through the inner liner tube (1) by the action of the through groove (31). The inner thread groove (32) is provided in the through groove (31), and the inner liner tube (1) has an outer thread groove (11) at the position of the inner thread groove (32) corresponding to the surface of the inner thread tube (1). The rotating positioning end cap (3) can be threaded onto the surface of the inner liner tube (1).

2. The shock-absorbing bushing of claim 1, wherein The inner liner tube (1) has an inner positioning rubber plate (13) distributed on its outer side. The shock-absorbing rubber ball (2) has a shock-absorbing cavity (22) for the inner positioning rubber plate (13) to pass through. The shock-absorbing cavity (22) is connected to the insertion groove (21) at both ends.

3. The shock-absorbing drum-shaped bushing according to claim 2, characterized in that, The number of inner positioning rubber plates (13) is two, and the two inner positioning rubber plates (13) are symmetrically distributed on both sides of the surface of the inner liner tube (1).

4. The shock-absorbing drum-shaped bushing according to claim 1, characterized in that, The positioning end cap (3) includes a connecting part (33) and a positioning part (34), wherein the positioning part (34) is sleeved on the outside of the connecting part (33) and integrally formed therewith.

5. The shock-absorbing drum-shaped bushing according to claim 4, characterized in that, The inner side of the connecting part (33) extends inward to form a dustproof part (35), and the surface of the shock-absorbing rubber ball (2) has a dustproof groove (23) at the position corresponding to the dustproof part (35), and the dustproof groove (23) is connected to the insertion groove (21).

6. The shock-absorbing drum-shaped bushing according to claim 4, characterized in that, The connecting part (33) and the positioning part (34) are connected on the inner side to form a step (36), and the corner of the step (36) has an arc chamfer (37).

7. The shock-absorbing drum-shaped bushing according to claim 4, characterized in that, The connecting part (33) is recessed outward and inward to form a concave part (38), and the action of the concave part (38) can make the outer end of the inner liner tube (1) flush with the outer edge of the through groove (31).

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