Automobile swing arm with good damping and stabilizing effects

Abstract

The utility model relates to the technical field of automobile accessories, in particular to an automobile swing arm with a good damping and stabilizing effect, which comprises a swing arm, and a plurality of connecting sleeves are fixedly mounted on the surface of the swing arm; the connecting protection mechanism used for increasing the strength of the swing arm is arranged on one side of the swing arm; the connecting protection mechanism comprises a plurality of reinforcing ribs fixedly installed on the surface of the swing arm, connecting assemblies are arranged on the outer sides of the connecting sleeves, and protection assemblies are arranged on the outer sides of the connecting assemblies. The connecting sleeve and the connecting assembly on the outer side of the connecting sleeve are arranged on the surface of the swing arm, a multi-layer damping structure is constructed, the impact resistance and the connecting stability of the swing arm under complex road conditions are effectively improved, the protective assembly provides radial supporting and shearing buffering through wrapping and limiting, the overall rigidity of the swing arm is enhanced through the reinforcing ribs, and the service life of the swing arm is prolonged. And the bending resistance and the torsion resistance are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automotive swing arm with good shock absorption and stability. Background Technology

[0002] In automotive suspension systems, the control arm, as a crucial guiding structure connecting the wheels and the chassis, must withstand multi-directional loads from the road surface and achieve force buffering and filtering through bushings at the ends of the control arm.

[0003] A search of the Chinese patent "A Car Swing Arm with Good Stability" (publication number CN217099583U) reveals that this patent not only increases the overall strength of the device but also reduces the overall force on the swing arm body during impacts. Furthermore, when the combined swing arm body is impacted, one side deforms first, and while one side of the swing arm body deforms, the other side can still provide a certain degree of connection with the vehicle, thereby further enhancing the stability of the car when impacted.

[0004] In existing vehicles, a single-hardness rubber bushing is commonly used to press into the metal swing arm body for connection. This type of bushing has a certain buffering effect when bearing low- and medium-frequency vibrations, but when encountering high-frequency impacts or instantaneous shear loads, the rubber material is prone to local stress concentration, leading to bushing fatigue, tearing, or displacement.

[0005] Therefore, a car swing arm with good shock absorption and stability is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a car swing arm with good shock absorption and stability in order to solve the above problems. It improves the existing method of connecting the metal swing arm body by pressing a single hardness rubber bushing into it. While this type of bushing has a certain buffering effect when bearing low-frequency vibrations, it is prone to local stress concentration when encountering high-frequency impacts or instantaneous shear loads, which can lead to bushing fatigue, tearing or displacement.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a car swing arm with good shock absorption and stability, comprising: a swing arm, wherein multiple connecting sleeves are fixedly installed on the surface of the swing arm; a connecting protection mechanism, wherein the connecting protection mechanism for increasing the strength of the swing arm is disposed on one side of the swing arm; wherein the connecting protection mechanism includes multiple reinforcing ribs fixedly installed on the surface of the swing arm, and connecting components are disposed on the outer side of each of the multiple connecting sleeves, and protective components are disposed on the outer side of each connecting component.

[0008] Preferably, the connecting assembly includes a hard rubber sleeve disposed on the outside of the connecting sleeve, a bushing fixedly installed on the outside of the hard rubber sleeve, the bushing being fixedly connected to the swing arm, and the same damping groove being formed between the inner wall of the bushing and the hard rubber sleeve, and a wave spring being fixedly installed inside the damping groove. The hard rubber sleeve is used to bear the main load of the connecting part, improving the structural rigidity and stability. The wave spring can undergo elastic deformation when subjected to force, playing the role of absorbing impact, buffering displacement and suppressing vibration, effectively reducing vibration transmission and stress concentration in the connecting area.

[0009] Preferably, the damping groove is ring-shaped and the wave spring is spiral-shaped. The damping groove is a ring structure that is continuously opened between the inner wall of the bushing and the outer wall of the hard rubber sleeve to form a closed buffer cavity. The wave spring is spiral-shaped and embedded in the damping groove in a circumferential manner. The spiral structure can form multi-point contact and multi-segment elastic response when subjected to radial force, further enhancing the energy absorption and rebound control effect during the buffering process.

[0010] Preferably, a soft rubber sleeve is fixedly installed on the outer side of the connecting sleeve, and the hard rubber sleeve is fixedly installed on the outer side of the soft rubber sleeve. The soft rubber sleeve, as the innermost layer of the connecting component, is set close to the surface of the connecting sleeve and is made of low-hardness elastic material. It has excellent deformation buffering ability and can preferentially deform to absorb the initial impact force during the loading of the swing arm, thereby reducing the peak force of the hard rubber sleeve.

[0011] Preferably, a hollow layer is provided between the hard rubber sleeve and the soft rubber sleeve. The hollow layer surrounds the soft rubber sleeve in a ring structure and is filled with damping silicone oil to form a shear-type damping interface between the hard rubber sleeve and the soft rubber sleeve. When the swing arm connection is subjected to dynamic load, the silicone oil in the hollow layer undergoes shear flow due to external force compression, thereby converting vibration energy into heat energy and dissipating it.

[0012] Preferably, the protective assembly includes two shoulder platforms fixed on the outside of the bushing. The shoulder platforms are located on both sides of the swing arm, and both shoulder platforms are fixedly connected to the swing arm. The two shoulder platforms form a surrounding limiting structure for both ends of the bushing. During the operation of the swing arm, the displacement tendency of the bushing in the axial and radial directions can be effectively limited, preventing the bushing from misalignment, slippage or premature dislocation due to force offset or rubber deformation.

[0013] Preferably, the shoulder platform is configured as a ring shape, and the outer ring edge of the shoulder platform is configured as a slope. The outer ring edge of the shoulder platform is configured as a slope. The slope structure can guide the load to gradually transition and disperse when the swing arm is subjected to force offset or shear deformation, thereby reducing edge stress concentration.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting a connecting sleeve and its outer connecting components on the surface of the swing arm, a multi-layer shock absorption structure is constructed, which effectively improves the impact resistance and connection stability of the swing arm under complex road conditions. The protective components provide radial support and shear buffer through covering and limiting, while multiple reinforcing ribs enhance the overall rigidity of the swing arm and improve its bending and torsional resistance.

[0016] 2. The two shoulder platforms form a surrounding limiting structure for both ends of the bushing, which can effectively limit the displacement tendency of the bushing in the axial and radial directions during the operation of the swing arm, preventing the bushing from misalignment, slippage or premature dislocation due to force offset or rubber deformation, and improving the stability and fatigue resistance of the connection area. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection and protection mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the shock-absorbing groove and wave spring structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the hard rubber sleeve and soft rubber sleeve of this utility model;

[0021] Figure 5 This is a schematic diagram of the protective component structure of this utility model.

[0022] In the diagram: 100, swing arm; 200, connecting sleeve; 300, connecting and protective mechanism; 310, reinforcing rib; 320, connecting assembly; 321, hard rubber sleeve; 322, bushing; 323, shock absorber groove; 324, wave spring; 325, soft rubber sleeve; 326, hollow layer; 330, protective assembly; 331, shoulder platform. Detailed Implementation

[0023] 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.

[0024] In practical implementation: such as Figure 1-5As shown, a car swing arm with good shock absorption and stability includes: a swing arm 100, with multiple connecting sleeves 200 fixedly installed on the surface of the swing arm 100; a connecting protection mechanism 300, which is used to increase the strength of the swing arm 100 and is disposed on one side of the swing arm 100; wherein, the connecting protection mechanism 300 includes multiple reinforcing ribs 310 fixedly installed on the surface of the swing arm 100, and connecting components 320 are provided on the outer side of each of the multiple connecting sleeves 200, and protective components 330 are provided on the outer side of the connecting components 320. By setting multiple connecting sleeves 200 on the surface of the swing arm 100 and cooperating with the connecting components 320 on their outer side to construct a layered shock absorption structure, the impact resistance and connection stability of the swing arm 100 under complex road conditions are improved. At the same time, the protective components 330 form auxiliary support through structural covering and limiting, and have good radial limiting and shear buffering effects. The multiple reinforcing ribs 310 on the surface of the swing arm 100 constitute a protective and rigidity synergistic reinforcement structure, which enhances the bending and torsional resistance of the swing arm 100.

[0025] It should be noted that the existing automotive control arm 100 typically includes a one-piece control arm 100 body made of high-strength metal material. By adding a connecting component 320 and a protective component 330 to the outside of the original connecting sleeve 200, the function of the original connection structure and the shock absorption stability are enhanced. The connecting component 320 is an independent modular structure, which is connected to the connecting sleeve 200 by a set or mating method. The protective component 330 covers the outside of the connecting component 320 and is connected to the control arm 100. Both are set up without interfering with the normal movement path and working stroke of the control arm 100, ensuring that the vehicle assembly process, suspension geometry and original dynamic response characteristics remain unchanged. Therefore, it does not affect the normal use of the existing control arm 100 structure.

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, the connecting assembly 320 includes a hard rubber sleeve 321 disposed on the outside of the connecting sleeve 200. A bushing 322 is fixedly installed on the outside of the hard rubber sleeve 321. The bushing 322 is fixedly connected to the swing arm 100. The same damping groove 323 is opened between the inner wall of the bushing 322 and the hard rubber sleeve 321. A wave spring 324 is fixedly installed inside the damping groove 323. The hard rubber sleeve 321 disposed on the outside of the connecting sleeve 200 and the bushing 322 fixedly connected to its outside form a covered layered structure. The hard rubber sleeve 321 is used to bear the main load of the connecting part and improve the rigidity and stability of the structure. The bushing 322 is fixedly connected to the swing arm 100. A damping groove 323 is opened between its inner wall and the hard rubber sleeve 321. The wave spring 324 installed in the groove can undergo elastic deformation when subjected to force, which plays the role of absorbing impact, buffering displacement and suppressing vibration, effectively reducing vibration transmission and stress concentration in the connecting area, and enhancing the damping performance and fatigue life of the swing arm 100 at the connecting part.

[0027] It should be noted that the hard rubber sleeve 321 is made of a high-hardness elastomer material, such as rubber with Shore hardness or modified polyurethane, which has good compression resistance and resilience properties and can provide outer rigid support under connection load.

[0028] The damping groove 323 is designed in a ring shape, and the wave spring 324 is designed in a spiral shape. The damping groove 323 is a ring structure that is continuously opened between the inner wall of the bushing 322 and the outer wall of the hard rubber sleeve 321 to form a closed buffer cavity. The wave spring 324 is designed in a spiral shape and is embedded in the damping groove 323 in a circumferential manner. The spiral structure can form multi-point contact and multi-segment elastic response when subjected to radial force, further enhancing the energy absorption and rebound control effect during the buffering process. Through the synergistic cooperation of the ring groove and the spiral wave spring 324, the damping structure has a continuous compression path and flexible elastic adjustment capability, effectively improving the damping stability and fatigue buffering performance of the structure under multi-directional loads.

[0029] A soft rubber sleeve 325 is fixedly installed on the outer side of the connecting sleeve 200, and a hard rubber sleeve 321 is fixedly installed on the outer side of the soft rubber sleeve 325. The soft rubber sleeve 325, as the innermost layer of the connecting component 320, is set close to the surface of the connecting sleeve 200. It is made of low-hardness elastic material and has excellent deformation buffering capacity. It can preferentially deform and absorb the initial impact force during the loading of the swing arm 100, reducing the peak force of the hard rubber sleeve 321. The hard rubber sleeve 321, as the intermediate layer, is used to bear the load of the main structure and provide rigid support. It works together with the bushing 322 and its internal shock-absorbing groove 323 and spiral wave spring 324 to form a multi-level buffer system. The soft rubber sleeve 325 and the hard rubber sleeve 321 form a composite structure of soft, hard and limiting, which can effectively decompose the impact, filter the vibration, suppress the secondary swing of the connection part, and significantly improve the durability and dynamic stability of the connection part of the swing arm 100.

[0030] It should be noted that the soft rubber sleeve 325 is set on the outside of the connecting sleeve 200, and uses a ring-shaped structure to cover the outer surface of the connecting sleeve 200. It is fixedly connected to the connecting sleeve 200 by compression fitting or vulcanization, and plays a primary buffering and vibration isolation role. The soft rubber sleeve 325 is made of a low hardness elastic material, such as natural rubber, thermoplastic elastomer TPE or modified silicone rubber.

[0031] A hollow layer 326 is provided between the hard rubber sleeve 321 and the soft rubber sleeve 325. The hollow layer 326 surrounds the soft rubber sleeve 325 in a ring structure and is filled with damping silicone oil to form a shear-type damping interface between the hard rubber sleeve 321 and the soft rubber sleeve 325. When the connection part of the swing arm 100 is subjected to dynamic load, the silicone oil in the hollow layer 326 undergoes shear flow due to external force compression, thereby converting vibration energy into heat energy and dissipating it, further suppressing the resonance and rebound effect of the connection component 320 under high-frequency operating conditions.

[0032] like Figure 2 and Figure 5 As shown, the protective assembly 330 includes two shoulder platforms 331 fixed on the outside of the bushing 322. The shoulder platforms 331 are located on both sides of the swing arm 100, and both shoulder platforms 331 are fixedly connected to the swing arm 100. The two shoulder platforms 331 form a surrounding limiting structure for both ends of the bushing 322. During the operation of the swing arm 100, the bushing 322 can be effectively restricted in the axial and radial directions to prevent the bushing 322 from misalignment, slippage or premature dislocation due to force offset or rubber deformation, thereby improving the stability and fatigue resistance of the connection area.

[0033] The shoulder platform 331 is set in a ring shape, and the outer ring edge of the shoulder platform 331 is set in a bevel shape. The bevel structure can guide the load to gradually transition and disperse when the swing arm 100 is subjected to force offset or shear deformation, thereby reducing the stress concentration at the edge.

[0034] In use, the road impact and tire load generated by the vehicle are first transmitted to the connecting assembly 320 through the connecting sleeve 200. The connecting assembly 320, through a multi-layered structure consisting of a soft rubber sleeve 325, a hollow layer 326, a hard rubber sleeve 321, and a bushing 322 arranged sequentially from the inside out, forms a shock-absorbing response chain that is flexible to fluid to rigid. Among them, the soft rubber sleeve 325, as the first buffer layer, deforms first and absorbs the initial impact force; the damping silicone oil in the hollow layer 326 provides damping energy dissipation under compressive shearing action, further weakening the transmission of high-frequency vibration; the hard rubber sleeve 321, as a rigid support layer, bears the main force and guides the stability of the structural shape; and the bushing 322 is fixedly connected to the swing arm 100 to maintain the structural posture.

[0035] Inside the connecting assembly 320, the annular damping groove 323 between the bushing 322 and the hard rubber sleeve 321, in conjunction with the embedded spiral wave spring 324, generates a multi-point elastic response under radial force, forming a combined elastic-plastic buffering effect to disperse and regulate vibration energy. In the protective assembly 330 on the outside, two shoulder platforms 331 located on both sides of the swing arm 100 provide a surrounding limit for the bushing 322. In particular, the inclined structure on the outer edge of the shoulder platform 331 can guide the load to transition smoothly when shear displacement occurs, reducing the risk of edge damage to the bushing 322 and preventing premature structural degradation.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A swing arm with good damping stability for a vehicle, characterized in that, include: A swing arm (100) has multiple connecting sleeves (200) fixedly installed on its surface. A connecting protective mechanism (300) for increasing the strength of the swing arm (100) is provided on one side of the swing arm (100); The connecting protection mechanism (300) includes multiple reinforcing ribs (310) fixedly installed on the surface of the swing arm (100), and connecting components (320) are provided on the outer side of the multiple connecting sleeves (200), and protective components (330) are provided on the outer side of the connecting components (320).

2. The automotive swing arm with good shock absorption and stability according to claim 1, characterized in that: The connecting assembly (320) includes a hard rubber sleeve (321) disposed on the outside of the connecting sleeve (200). A bushing (322) is fixedly installed on the outside of the hard rubber sleeve (321). The bushing (322) is fixedly connected to the swing arm (100). The same damping groove (323) is provided between the inner wall of the bushing (322) and the hard rubber sleeve (321). A wave spring (324) is fixedly installed inside the damping groove (323).

3. The automobile swing arm with damping and stable effect according to claim 2, characterized in that: The damping groove (323) is configured as a ring shape, and the wave spring (324) is configured as a spiral shape.

4. The automobile swing arm with damping and stable effect according to claim 2, characterized in that: A soft rubber sleeve (325) is fixedly installed on the outside of the connecting sleeve (200), and a hard rubber sleeve (321) is fixedly installed on the outside of the soft rubber sleeve (325).

5. The automobile swing arm with damping and stable effect according to claim 4, characterized in that: A hollow layer (326) is provided between the hard rubber sleeve (321) and the soft rubber sleeve (325), and the hollow layer (326) surrounds the soft rubber sleeve (325).

6. The automobile swing arm with damping and stable effect according to claim 1, characterized in that: The protective assembly (330) includes two shoulder platforms (331) fixed on the outside of the bushing (322), the shoulder platforms (331) being located on both sides of the swing arm (100), and both shoulder platforms (331) being fixedly connected to the swing arm (100).

7. The automobile swing arm with damping and stable effect according to claim 6, characterized in that: The shoulder platform (331) is configured as a ring shape, and the outer ring edge of the shoulder platform (331) is configured as a bevel.

Images