A high-stability single shock absorber for automobiles

Abstract

This utility model relates to the field of automotive suspension technology, specifically a high-stability single shock absorber device for automobiles. It includes a vehicle mounting base and a shock absorber body. A coil spring is fitted around the outside of the shock absorber body. Multiple elastic cantilever arms are connected to the upper end cover of the shock absorber body. The free ends of the elastic cantilever arms are connected to an annular stabilizer frame. Multiple arc-shaped guide arms are provided around the outer periphery of the annular stabilizer frame. The ends of the arc-shaped guide arms are slidably embedded in a U-shaped guide groove provided on the vehicle mounting base. The upper and lower ends of the coil spring are respectively provided with a lower support washer and an upper pressure plate, and the upper pressure plate is fixed to the upper end cover of the shock absorber body. This high-stability single shock absorber device effectively suppresses the skewed movement of the shock absorber piston rod under lateral loads, improving working stability and sealing durability. It also has a simple structure and is easy to integrate.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension technology, specifically a high-stability single shock absorber device for automobiles. Background Technology

[0002] As a crucial structure connecting the vehicle body and wheels, the automotive suspension system plays a vital role in buffering shocks, transmitting torque, and maintaining driving stability. Among these systems, single shock absorbers are widely used in some vehicle models, especially in the rear suspension, due to their compact structure and low cost.

[0003] Existing single shock absorber devices mostly adopt a coaxial arrangement of shock absorber and coil spring combination structure, which directly connects the axle and body through upper and lower support points. When subjected to lateral forces or road impacts, non-axial lateral loads are easily generated between the shock absorber piston rod and guide bushing, resulting in uneven piston movement damping, accelerated wear of seals, and even shock absorber swaying or resonance. This problem is particularly obvious when the vehicle is cornering at high speed or driving on continuous uneven road surfaces. It not only affects the shock absorption effect but also reduces the overall service life of the device and weakens the lateral stability of the vehicle. Although some designs attempt to alleviate lateral forces by adding external support arms or changing the installation angle, these methods are often structurally complex, occupy a lot of space, and fail to fundamentally improve the stress posture of the shock absorber unit under dynamic conditions. Utility Model Content

[0004] The purpose of this invention is to provide a highly stable single shock absorber for automobiles, in order to solve the problems mentioned in the background art, such as the skewed movement of the shock absorber piston rod caused by lateral force during operation, leading to seal wear, uneven damping, and a decrease in overall stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-stability single shock absorber for automobiles, comprising a vehicle body mounting base and a shock absorber body. A helical spring is sleeved on the outside of the shock absorber body. Multiple elastic cantilever arms are connected to the upper end cover of the shock absorber body. The free ends of the elastic cantilever arms are connected to an annular stabilizer frame. Multiple arc-shaped guide arms are provided on the outer periphery of the annular stabilizer frame. The ends of the arc-shaped guide arms are slidably embedded in a U-shaped guide groove provided on the vehicle body mounting base. The upper and lower ends of the helical spring are respectively provided with a lower support washer and an upper pressure plate, and the upper pressure plate is fixed to the upper end cover of the shock absorber body.

[0006] Preferably, the elastic cantilever is formed by bending a metal leaf spring, and the root of the elastic cantilever is fixed to the outer edge of the upper end cover of the shock absorber body by rivets, and the free end of the elastic cantilever is welded to the inner ring of the annular stabilizer.

[0007] Preferably, the annular stabilizer is a closed ring made of cold-rolled steel strip with an "L" shaped cross section. The inner horizontal section of the annular stabilizer is connected to the free end of the elastic cantilever, and the outer vertical section of the annular stabilizer is welded and fixed to the connection of multiple arc-shaped guide arms.

[0008] Preferably, the U-shaped guide groove has symmetrically arranged rubber bushings on both sides of the groove opening, and the end of the arc-shaped guide arm has a lateral movement gap of 0.4-0.7mm in the U-shaped guide groove.

[0009] Preferably, the arc-shaped guide arm is formed by bending an elastic metal strip into an arc shape, and a pre-compression elastic pad is provided between the end of the arc-shaped guide arm and the U-shaped guide groove.

[0010] Preferably, the upper bearing plate is a disc spring structure, with its central hole threadedly connected to the upper end of the shock absorber body, and the outer edge of the upper bearing plate has teeth on the contact surface with the helical spring.

[0011] Compared with existing technologies, the advantages of this invention are: this high-stability automotive single shock absorber effectively suppresses the skewed movement of the shock absorber piston rod under lateral loads, improving working stability and sealing durability. Simultaneously, it has a simple structure and is easy to integrate. Through the coordinated support structure of the elastic cantilever and the annular stabilizer, combined with the directional sliding constraint of the arc-shaped guide arm within the U-shaped guide groove, the device achieves multi-point flexible positioning of the shock absorber body, significantly enhancing lateral disturbance resistance. At the same time, the cooperation between the upper pressure plate and the lower support washer ensures uniform force distribution on the coil spring, further improving the overall motion stability of the system. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a high-stability single shock absorber device for automobiles according to the present invention;

[0013] Figure 2 This is a schematic diagram of the connection structure between the annular stabilizer frame and the shock absorber body of a high-stability automotive single shock absorber device according to this utility model;

[0014] Figure 3 This is a schematic diagram of the bottom structure of the vehicle body mounting base for a high-stability single shock absorber device for automobiles according to this utility model.

[0015] In the diagram: 1. Body mounting bracket; 2. Shock absorber body; 3. Coil spring; 4. Elastic cantilever; 5. Circular stabilizer; 6. Arc-shaped guide arm; 7. U-shaped guide groove; 8. Lower support washer; 9. Upper pressure plate. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3This utility model provides a technical solution: a high-stability single shock absorber for automobiles, including a vehicle mounting base 1 and a shock absorber body 2. The shock absorber body 2 is fixed to the vehicle mounting base 1 by bolts. A coil spring 3 is sleeved on the outside of the shock absorber body 2. The coil spring 3 and the shock absorber body 2 are tightly fitted to ensure that there is no relative slippage during compression and rebound. The upper end cover of the shock absorber body 2 is connected to multiple elastic cantilever arms 4. The free ends of the elastic cantilever arms 4 are connected to an annular stabilizer 5. The annular stabilizer 5 has multiple arc-shaped guide arms 6 on its outer periphery. The ends of the arc-shaped guide arms 6 are slidably embedded into a U-shaped guide groove 7 provided on the vehicle mounting base 1. The upper and lower ends of the coil spring 3 are respectively provided with a lower support washer 8 and an upper pressure plate 9. The washer 8 is supported on the lower tray of the shock absorber body 2, and the upper bearing plate 9 is fixed to the upper end cover of the shock absorber body 2. When the vehicle is traveling on a curve or uneven road surface and is subjected to lateral force, the shock absorber body 2 will generate a lateral yaw tendency. This movement is transmitted to multiple elastic arms 4 through the upper end cover. The elastic arms 4 undergo elastic compression on the force-bearing side and provide tensile reaction force on the opposite side, which drives the ring stabilizer 5 to perform micro-adaptive displacement adjustment as a whole. This causes the arc-shaped guide arm 6 connected to its outer periphery to slide directionally along the U-shaped guide groove 7 on the vehicle body mounting seat 1. This sliding process, combined with the elastic deformation of the arc-shaped guide arm 6 itself and the preset movement gap at the end, effectively absorbs and disperses lateral impact energy and limits the excessive lateral displacement of the shock absorber body 2. Meanwhile, during compression and rebound, the upper end of the coil spring 3 acts stably on the upper cover of the shock absorber body 2 through the upper bearing plate 9, while the lower end evenly transmits the load to the lower tray through the lower support washer 8, avoiding eccentric force. This ensures the axial movement accuracy of the shock absorber piston rod within the cylinder, reduces abnormal friction and uneven wear between the piston rod and the seals, and significantly suppresses the problems of uneven piston movement damping, accelerated seal wear, shock absorber swaying, and even resonance that are prone to occur in traditional single shock absorber devices under lateral loads. This improves the structural stability and durability of the shock absorber unit under dynamic conditions, fundamentally improves the stress posture of the shock absorber, and enhances the vehicle's handling stability and ride comfort under complex driving conditions. The elastic suspension arm 4 is formed by bending a metal leaf spring, and the elastic... The elastic cantilever 4 is fixed to the outer edge of the upper end cover of the shock absorber body 2 by rivets at its root, and the free end of the elastic cantilever 4 is welded to the inner ring of the annular stabilizer 5. This structure achieves a rigid connection between the elastic cantilever 4 and the upper end cover of the shock absorber body 2 at its root, while the free end is fixedly connected to the annular stabilizer 5. This allows the elastic cantilever 4 to produce controllable elastic deformation when subjected to lateral forces, effectively buffering and dispersing lateral impacts from the wheels, while maintaining stable support for the annular stabilizer 5, ensuring that it drives the coordinated movement of the arc-shaped guide arm 6, thereby enhancing the dynamic response capability and anti-eccentric load performance of the overall structure. The annular stabilizer 5 is a closed ring made of cold-rolled steel strip, with an "L"-shaped cross-section, and the inner horizontal section of the annular stabilizer 5 is connected to the free end of the elastic cantilever 4.Furthermore, the outer vertical section of the annular stabilizer 5 is welded and fixed to the multiple arc-shaped guide arms 6 at their connection points. This structure forms an inner and outer layered force-bearing structure. The inner horizontal section provides a stable connection reference for the elastic cantilever 4, while the outer vertical section is firmly fixed to the arc-shaped guide arms 6 by welding. This ensures that the annular stabilizer 5 has good torsional stiffness and structural stability when transmitting lateral constraint forces, ensuring the reliable transmission of the sliding guidance effect of the arc-shaped guide arms 6 within the U-shaped guide groove 7, and effectively supporting the coordinated work of the entire stabilization system. Symmetrical distribution is provided on both sides of the groove opening of the U-shaped guide groove 7. The rubber bushing is installed, and the end of the arc-shaped guide arm 6 has a lateral movement clearance of 0.4-0.7mm within the U-shaped guide groove 7. This structure allows the shock absorber to swing slightly within its normal operating range, and can also absorb vibration impact through the elastic compression of the rubber bushing when subjected to larger lateral forces. This effectively mitigates rigid collisions between metal parts, improves guiding stability and durability, and prevents swaying caused by excessive clearance or jamming caused by insufficient clearance. The arc-shaped guide arm 6 is made of an elastic metal strip bent into an arc shape, with its free end tilted forward by 10° towards the direction of vehicle travel. The angle is 15°, and the radius of curvature matches the lateral swing trajectory of the shock absorber. A pre-compressed elastic pad is provided between the end of the arc-shaped guide arm 6 and the U-shaped guide groove 7. This structure allows the arc-shaped guide arm 6 to undergo adaptive deformation along the actual lateral movement trajectory of the shock absorber body 2. The forward tilt angle helps to respond to dynamic loads in advance during vehicle operation. Combined with the buffering effect of the pre-compressed elastic pad at the end, it effectively suppresses vibration transmission and eliminates assembly gaps, improving the response speed and compliance of lateral constraints, avoiding impact overload, and enhancing the overall stability and ride comfort of the system. The upper bearing pressure plate... 9 is a disc spring structure, with its central hole threaded to the upper end of the shock absorber body 2 and equipped with an anti-loosening washer. The outer edge of the upper pressure plate 9 has teeth on the contact surface with the coil spring 3. This structure provides axial support while also possessing a certain degree of radial compliance and axial elastic compensation capability, effectively absorbing high-frequency vibrations and reducing stress concentration. The toothed design on the outer edge enhances the meshing friction with the coil spring 3, preventing slippage or deflection of the spring under dynamic loads, ensuring stable force transmission, and improving the overall response accuracy and durability of the shock absorption system.

[0018] Working principle: When using this high-stability single shock absorber, firstly, when the vehicle is driven and the wheels are subjected to road impact or lateral force during cornering, the shock absorber body 2 generates axial compression and rebound motion, accompanied by a lateral yaw tendency. The coil spring 3 is compressed and transmits the load to the upper end cover of the shock absorber body 2 through the upper bearing plate 9. At the same time, the lower support washer 8 evenly transmits the reaction force to the lower tray of the shock absorber body 2. The movement of the upper end cover of the shock absorber body 2 causes multiple elastic cantilever arms 4 to deform synchronously. The free ends of the elastic cantilever arms 4 push... The annular stabilizer 5 undergoes a slight displacement, and the arc-shaped guide arm 6 connected to the outer periphery of the annular stabilizer 5 slides along the U-shaped guide groove 7 on the vehicle mounting seat 1. Its end maintains directional movement within the guide groove and undergoes elastic deformation. The movement of the arc-shaped guide arm 6 is limited and guided by the rubber bushing inside the U-shaped guide groove 7. At the same time, its forward tilt angle allows it to respond to dynamic displacement in advance in the vehicle's forward direction. The entire stabilization structure adapts to the spatial movement trajectory of the shock absorber body 2 through the linkage of the elastic cantilever 4, the annular stabilizer 5, and the arc-shaped guide arm 6, thereby completing a series of tasks.

[0019] Although the present invention 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-stability automobile single shock-absorbing device, comprising a vehicle body mounting seat (1) and a shock absorber body (2), and a coil spring (3) is externally sleeved on the shock absorber body (2), characterized in that: The upper end cover of the shock absorber body (2) is connected to multiple elastic cantilever arms (4). The free ends of the elastic cantilever arms (4) are connected to an annular stabilizer frame (5). The annular stabilizer frame (5) has multiple arc-shaped guide arms (6) on its outer periphery. The ends of the arc-shaped guide arms (6) are slidably embedded in the U-shaped guide groove (7) provided on the vehicle body mounting seat (1). The upper and lower ends of the coil spring (3) are respectively provided with a lower support washer (8) and an upper pressure plate (9). The upper pressure plate (9) is fixed to the upper end cover of the shock absorber body (2).

2. A high stability automobile mono-suspension device according to claim 1, characterized in that: The elastic cantilever (4) is formed by bending a metal leaf spring, and the root of the elastic cantilever (4) is fixed to the outer edge of the upper end cover of the shock absorber body (2) by rivets, and the free end of the elastic cantilever (4) is welded to the inner ring of the annular stabilizer (5).

3. The high stability automobile mono-suspension device according to claim 1, characterized in that: The annular stabilizer (5) is a closed ring made of cold-rolled steel strip with an "L" shaped cross section. The inner horizontal section of the annular stabilizer (5) is connected to the free end of the elastic cantilever (4), and the outer vertical section of the annular stabilizer (5) is welded and fixed to the connection of multiple arc-shaped guide arms (6).

4. The high stability automobile mono-suspension device according to claim 1, wherein: The U-shaped guide groove (7) has symmetrically arranged rubber bushings on both sides of the groove opening, and the end of the arc-shaped guide arm (6) has a lateral movement gap of 0.4-0.7mm in the U-shaped guide groove (7).

5. The high stability automotive mono-shock device of claim 1, wherein: The arc-shaped guide arm (6) is formed by bending an elastic metal strip into an arc shape, and a pre-compression elastic pad is provided between the end of the arc-shaped guide arm (6) and the U-shaped guide groove (7).

6. The high stability automotive mono-shock device of claim 1, wherein: The upper pressure plate (9) is a disc spring structure, with its central hole threaded to the upper end of the shock absorber body (2), and the outer edge of the upper pressure plate (9) has teeth on the contact surface with the helical spring (3).

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