Swing arm bushing steel tube buffer device

Abstract

The utility model belongs to mechanical accessory technical field, and disclose a kind of swing arm bush steel pipe buffer device, including swing arm bush steel pipe main body, the surface of swing arm bush steel pipe main body is connected with outer buffer cover, and buffer assembly is provided on outer buffer cover, and the top end of outer buffer cover is connected with fluorine rubber sealing ring, and the bottom end is connected with fluorine rubber sealing ring.The utility model is through the flexible deformation of high-density flame-retardant sponge rod, the elastic expansion of high-toughness piano steel wire spring, the flexible transition of rubber ring and the deformation energy absorption of elastic transition layer, forms fourfold buffer cooperation, compared with traditional single buffer structure, it is helpful to weaken the influence of high-frequency vibration impact on swing arm bush steel pipe main body, auxiliary prolong the service life of swing arm bush steel pipe main body, and rubber ring is made of ageing-resistant butyl rubber material, and elastic transition layer is made of high-elasticity polyurethane material, and ageing-resistant and wear-resistant materials are selected, in a certain temperature range, it is convenient to keep stable performance, more conducive to adapting to complex working condition environment.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical parts technology, specifically a rocker arm bushing steel pipe buffer device. Background Technology

[0002] The swing arm bushing steel tube is a common connecting and load-bearing component in various mechanical structures, especially widely used in automotive suspension systems. Its main function is to achieve flexible connection between the swing arm and other related structures. While transmitting force and motion, it also plays a preliminary role in mitigating structural vibration. During mechanical operation, the swing arm is often subjected to continuous forces from external working conditions. These forces are transmitted and act on the bushing steel tube. If there is a lack of effective buffering and adjustment, stress concentration can easily occur.

[0003] Meanwhile, a car control arm bushing with application number CN202222111814.5 includes a control arm bushing body, a first retainer sleeved on the outside of the control arm bushing body, a second retainer hinged to the right side of the first retainer, a rubber protective sleeve fixedly installed on the outside of the control arm bushing body, and a shock-absorbing mechanism movably installed inside the first retainer. The shock-absorbing mechanism includes a fixed plate, a diagonal rod, a locking block, a spring, a connecting rod, a pull rod, a clamping seat, and a rubber pad. A fixed plate is fixedly installed on the inner left wall of the first retainer, and two diagonal rods are hinged to the right side of the fixed plate.

[0004] However, the following problems were found in the implementation of the relevant technologies: the current buffer structure mostly relies on a single buffer pad to achieve buffering, but the single buffer pad structure not only lacks a sealing structure, but also cannot adapt to more complex and harsh working conditions, which leads to the buffering effect naturally decreasing over time, affecting the buffering effect. The above-mentioned automotive swing arm bushing has certain shortcomings. Its protection relies on the combination of the first bracket, the second bracket and the rubber protective sleeve, but its rubber protective sleeve is only fitted on the outside of the bushing body and does not form a sealed linkage with the bracket. There is a gap between the bracket and the bushing body. Dust, mud and other impurities can enter the interior through the bracket hinge and the gap of the insert, directly contacting the metal parts of the shock absorption mechanism such as the spring and tie rod, aggravating wear and corrosion, and thus reducing the service life in the long run. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a swing arm bushing steel pipe buffer device, which has the advantages of constructing an integrated protective barrier that blocks the intrusion path of impurities and significantly extends the service life of internal components.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a swing arm bushing steel pipe buffer device, comprising a swing arm bushing steel pipe body, an outer buffer sleeve connected to the surface of the swing arm bushing steel pipe body, a buffer assembly provided on the outer buffer sleeve, fluororubber sealing rings connected to the top and bottom ends of the outer buffer sleeve, two outer protective sleeves connected to the surface of the swing arm bushing steel pipe body, and four fastening bolts threadedly connected to the surface of the swing arm bushing steel pipe body; The surface of the buffer assembly is connected to the inner side of the outer buffer sleeve to provide a buffering force for the main body of the swing arm bushing steel pipe.

[0007] Preferably, the buffer assembly includes an inner buffer seat and a rigid load-bearing layer. The inner buffer seat is disposed inside the outer buffer sleeve. A plurality of high-density flame-retardant sponge rods are connected to the inner side of the inner buffer seat. A high-toughness piano wire spring is fitted on the surface of each high-density flame-retardant sponge rod. The surface of the rigid load-bearing layer is connected to the surface of each high-density flame-retardant sponge rod. A rubber ring is connected to the inner side of the rigid load-bearing layer. An elastic transition layer is connected to the inner side of the rubber ring.

[0008] Preferably, each of the high-toughness piano wire springs has its two ends connected to the inner side of the inner buffer seat and the surface of the rigid load-bearing layer, respectively.

[0009] Preferably, the inner side of the elastic transition layer is connected to the surface of the main body of the swing arm bushing steel pipe.

[0010] Preferably, the rubber ring is made of aging-resistant butyl rubber.

[0011] Preferably, the elastic transition layer is made of highly elastic polyurethane material.

[0012] Preferably, the outer buffer sleeve is made of high-strength engineering plastic material.

[0013] Preferably, the top end of the upper fluororubber sealing ring is connected to the bottom end of the upper outer protective sleeve, and the bottom end of the lower fluororubber sealing ring is connected to the top end of the lower outer protective sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model forms a four-fold buffer by combining the flexible deformation of the high-density flame-retardant sponge rod, the elastic extension and contraction of the high-toughness piano wire spring, the flexible transition of the rubber ring, and the deformation energy absorption of the elastic transition layer. Compared with the traditional single buffer structure, it helps to reduce the impact of high-frequency vibration and impact on the main body of the swing arm bushing steel pipe, and helps to extend the service life of the main body of the swing arm bushing steel pipe. In addition, the rubber ring is made of aging-resistant butyl rubber, and the elastic transition layer is made of high-elasticity polyurethane. Both are made of aging-resistant and wear-resistant materials, which can easily maintain stable performance within a certain temperature range and are more conducive to adapting to complex working environments.

[0015] 2. This utility model provides double protection for the main body of the swing arm bushing steel pipe through the outer buffer sleeve and the outer protective sleeve. Combined with the sealing effect of the fluororubber sealing ring, it helps to prevent dust, mud and water and other impurities from entering the interior of the main body of the swing arm bushing steel pipe, which helps to reduce wear and further extend the service life of the outer buffer sleeve, the outer protective sleeve and the main body of the swing arm bushing steel pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front planar structure of the present invention; Figure 3 This is one of the cross-sectional structural schematic diagrams of this utility model; Figure 4 This utility model Figure 3 A magnified structural diagram at point A; Figure 5 This is the second cross-sectional structural schematic diagram of this utility model.

[0017] In the diagram: 1. Main body of the swing arm bushing steel pipe; 2. Buffer assembly; 21. Inner buffer seat; 22. High-density flame-retardant sponge rod; 23. High-toughness piano wire spring; 24. Rigid load-bearing layer; 25. Rubber ring; 26. Elastic transition layer; 3. Outer buffer sleeve; 4. Fluororubber sealing ring; 5. Outer protective sleeve; 6. Fastening bolts. Detailed Implementation

[0018] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 5As shown, this utility model provides a swing arm bushing steel pipe buffer device, including a swing arm bushing steel pipe body 1, an outer buffer sleeve 3 connected to the surface of the swing arm bushing steel pipe body 1, a buffer component 2 provided on the outer buffer sleeve 3, and fluororubber sealing rings 4 connected to the top and bottom of the outer buffer sleeve 3 to facilitate blocking external dust and mud from entering. Two outer protective sleeves 5 are connected to the surface of the swing arm bushing steel pipe body 1 to facilitate all-round physical protection of the outer buffer sleeve 3 and reduce the risk of collision and wear. Four fastening bolts 6 are threadedly connected to the surface of the swing arm bushing steel pipe body 1. The surface of the buffer assembly 2 is connected to the inner side of the outer buffer sleeve 3 to provide a buffering force for the main body 1 of the swing arm bushing steel pipe.

[0020] Specifically, the buffer assembly 2 includes an inner buffer seat 21 and a rigid load-bearing layer 24. The inner buffer seat 21 is located inside the outer buffer sleeve 3. Several high-density flame-retardant sponge rods 22 are connected to the inner side of the inner buffer seat 21. The even distribution of multiple high-density flame-retardant sponge rods 22 facilitates more uniform buffering force. The high density characteristic improves energy absorption efficiency, and the flame-retardant function enhances safety under high-temperature conditions. A high-toughness piano wire spring 23 is fitted on the surface of each high-density flame-retardant sponge rod 22. The surface of the rigid load-bearing layer 24 is connected to the surface of each high-density flame-retardant sponge rod 22. A rubber ring 25 is connected to the inner side of the rigid load-bearing layer 24. The soft characteristic facilitates the weakening of vibration transmission and avoids rigid collisions. An elastic transition layer 26 is connected to the inner side of the rubber ring 25. The elastic transition layer 26 facilitates direct protection of the swing arm bushing steel pipe body 1, which helps to protect the swing arm bushing steel pipe body 1 from impact.

[0021] Furthermore, each high-toughness piano wire spring 23 has its two ends connected to the inner side of the inner buffer seat 21 and the surface of the rigid load-bearing layer 24, respectively, to ensure stable buffer stroke and avoid ineffective displacement.

[0022] Furthermore, the inner side of the elastic transition layer 26 is connected to the surface of the swing arm bushing steel pipe body 1, which helps to reduce the direct impact on the swing arm bushing steel pipe body 1 and extend the service life of the swing arm bushing steel pipe body 1.

[0023] It is worth noting that the rubber ring 25 is made of aging-resistant butyl rubber. The aging-resistant properties of butyl rubber help improve the durability of the rubber ring 25 and reduce the frequency of maintenance.

[0024] It is worth noting that the elastic transition layer 26 is made of highly elastic polyurethane material. The high resilience and high wear resistance of polyurethane help to improve the energy absorption efficiency and service life of the elastic transition layer 26.

[0025] It is worth mentioning that the outer buffer sleeve 3 is made of high-strength engineering plastic material. Engineering plastic combines lightweight and high rigidity, which makes it easy to reduce the overall weight.

[0026] It is worth emphasizing that the top of the upper fluororubber sealing ring 4 is connected to the bottom of the upper outer protective sleeve 5, and the bottom of the lower fluororubber sealing ring 4 is connected to the top of the lower outer protective sleeve 5, which facilitates the improvement of sealing reliability.

[0027] The outer buffer sleeve 3 and outer protective sleeve 5 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail. The "front, back, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0028] Working principle: First, the outer buffer sleeve 3 is made of high-strength engineering plastic through injection molding. This material is both lightweight and impact-resistant. A fluororubber sealing ring 4 is installed between the outer buffer sleeve 3 and the outer protective sleeve 5. Fluororubber has the characteristics of oil resistance and high and low temperature resistance, which effectively prevents dust and mud from entering the outer buffer sleeve 3, the outer protective sleeve 5 and the main body of the swing arm bushing steel pipe 1. The outer protective sleeve 5 is made of wear-resistant rubber. Its high elasticity and wear resistance can form a secondary protection for the outer buffer sleeve 3, which helps to reduce the external collision damage between the main body of the swing arm bushing steel pipe 1 and the outer buffer sleeve 3, forming a complete protective structure.

[0029] The multiple high-density flame-retardant sponge rods 22 arranged in a ring not only possess excellent flexible deformation capabilities, which can initially absorb low-frequency impact energy, but their flame-retardant properties also improve the overall safety of the swing arm bushing steel pipe body 1 and the outer buffer sleeve 3 under high-temperature conditions. Each high-density flame-retardant sponge rod 22 is fitted with a high-toughness piano wire spring 23. The high elasticity of the high-toughness piano wire spring 23 allows it to withstand high-frequency contraction and expansion without fatigue. It should be noted that each high-toughness piano wire spring 23 can be galvanized for rust prevention to further extend its service life. The rigid load-bearing layer 24, with its rigidity, can evenly transmit the dispersed impact load. The rubber ring 25, made of aging-resistant butyl rubber, utilizes the excellent airtightness and aging resistance of butyl rubber to achieve a flexible transition between the rigid load-bearing layer 24 and the elastic transition layer 26, while maintaining deformation performance during long-term use. The elastic transition layer 26, made of highly elastic polyurethane, closely adheres to the inner ring of the rubber ring 25 and the surface of the swing arm bushing steel pipe body 1 due to the high resilience and high wear resistance of polyurethane. This effectively absorbs impact energy and avoids wear on the surface of the swing arm bushing steel pipe body 1. The above structure forms a multi-buffered structure, which helps to improve the overall buffering efficiency of the swing arm bushing steel pipe body 1.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rocker arm bushing steel pipe buffer device, comprising a rocker arm bushing steel pipe body (1), characterized in that: The surface of the swing arm bushing steel pipe body (1) is connected to an outer buffer sleeve (3), and a buffer assembly (2) is provided on the outer buffer sleeve (3). Fluororubber sealing rings (4) are connected to the top and bottom of the outer buffer sleeve (3). Two outer protective sleeves (5) are connected to the surface of the swing arm bushing steel pipe body (1). Four fastening bolts (6) are threadedly connected to the surface of the swing arm bushing steel pipe body (1). The surface of the buffer assembly (2) is connected to the inner side of the outer buffer sleeve (3) to provide a buffering force for the main body (1) of the swing arm bushing steel pipe.

2. The swing arm bushing steel pipe buffer device according to claim 1, characterized in that: The buffer assembly (2) includes an inner buffer seat (21) and a rigid load-bearing layer (24). The inner buffer seat (21) is located inside the outer buffer sleeve (3). A number of high-density flame-retardant sponge rods (22) are connected to the inner side of the inner buffer seat (21). A high-toughness piano wire spring (23) is sleeved on the surface of each high-density flame-retardant sponge rod (22). The surface of the rigid load-bearing layer (24) is connected to the surface of each high-density flame-retardant sponge rod (22). A rubber ring (25) is connected to the inner side of the rigid load-bearing layer (24). An elastic transition layer (26) is connected to the inner side of the rubber ring (25).

3. The swing arm bushing steel pipe buffer device according to claim 2, characterized in that: Each of the high-toughness piano wire springs (23) is connected at both ends to the inner side of the inner buffer seat (21) and the surface of the rigid load-bearing layer (24), respectively.

4. The swing arm bushing steel pipe buffer device according to claim 2, characterized in that: The inner side of the elastic transition layer (26) is connected to the surface of the swing arm bushing steel pipe body (1).

5. The swing arm bushing steel pipe buffer device according to claim 2, characterized in that: The rubber ring (25) is made of aging-resistant butyl rubber.

6. The swing arm bushing steel pipe buffer device according to claim 2, characterized in that: The elastic transition layer (26) is made of highly elastic polyurethane material.

7. The swing arm bushing steel pipe buffer device according to claim 1, characterized in that: The outer buffer sleeve (3) is made of high-strength engineering plastic material.

8. The swing arm bushing steel pipe buffer device according to claim 1, characterized in that: The top end of the upper fluororubber sealing ring (4) is connected to the bottom end of the upper outer protective sleeve (5), and the bottom end of the lower fluororubber sealing ring (4) is connected to the top end of the lower outer protective sleeve (5).

Images