Composite damping spring structure

Abstract

The present application belongs to the technical field of damping spring adjustment, and particularly relates to a composite damping spring adjuster which can effectively adjust spring tension and compression damping, has the effect of prolonging tension and compression time, and allows the overall damping structure to have a certain curvature movement.

Description

Technical Field

[0001] This invention belongs to the field of spring damping technology, specifically relating to a composite damping spring structure that can effectively adjust the spring's stretching and compression damping, providing a novel damping release method, and extending the stretching and compression time, while allowing the damping structure to have a certain degree of curvature movement. Background Technology

[0002] In existing technologies, only damping cylinder cores can form a composite structure with springs, adjust the damping of the composite structure, and provide both extension and compression damping effects. However, the inner rod and outer cylinder of this type of core are relatively fixed in the horizontal direction, providing damping only in the vertical direction. This results in poor overall damping flexibility, which cannot meet practical needs in certain scenarios. The problem to be solved is to develop a composite structure that can adjust both tension and compression while maintaining its flexibility and allowing for a certain degree of curvature. Summary of the Invention

[0003] To address the problems of existing technologies, we have creatively invented a composite damping spring adjuster. This adjuster can both compress and extend, ensuring that the extension and compression damping of the entire damper can be adjusted within a certain range while keeping the damping spring wire diameter constant. It also allows for a certain degree of curvature, making it suitable for use with anti-roll bar dampers without affecting rotation requirements and meeting the needs of practical applications.

[0004] To achieve the above objectives, we have adopted the following technical solutions.

[0005] A composite damping spring structure is characterized by comprising a damping spring, a spring fixing hook, and a damping adjustment hoop, wherein the spring fixing hook includes a left-end spring fixing hook and a right-end spring fixing hook, the left-end spring fixing hook and the right-end spring fixing hook are welded to or integrally connected to the damping spring, and the damping adjustment hoop is fitted outside the damping spring, with the inner wall of the damping adjustment hoop tightly fitting the outer wall of the damping spring.

[0006] Preferably, one end of the spring fixing hook is connected to the damping spring, and the other end is connected to the adjustment device that needs to be used in practice.

[0007] Preferably, the damping spring is a tension spring or a compression spring, or a spring with a spacing between spring coils ranging from 0 to 20 millimeters.

[0008] Preferably, the damping adjustment hoop is fitted outside the damping spring, the inner diameter of the damping adjustment hoop is the same as the outer diameter of the damping spring, and the damping adjustment hoop moves between the two ends a of the damping spring to adjust the damping as needed.

[0009] Preferably, the inner diameter of the damping adjustment hoop is in the range of 5 mm to 80 mm, the thickness is in the range of 0.5 mm to 5 mm, and the length is in the range of 5 mm to 180 mm.

[0010] Preferably, the damping adjustment hoop is made of rubber, silicone, or elastic rubber.

[0011] Preferably, the wire diameter of the damping spring is in the range of 0.2 mm to 10 mm, and the outer diameter is in the range of 5 mm to 80 mm.

[0012] The beneficial effects of the above technical solution are:

[0013] Compared to a single spring, a composite spring structure provides a greater instantaneous tensile force when stretched for the same distance. This means that when a fixed tensile value is required, the spring wire diameter or number of coils can be reduced. Applying this characteristic to anti-roll bar dampers, a smaller wire diameter is needed, resulting in less resistance during steering. This ensures that the anti-roll bar damper provides the necessary tensile and compressive damping while preventing the steering wheel from becoming too heavy, thus maintaining a comfortable ride.

[0014] Regarding the role of curvature: In practical applications, the inner rod of the anti-roll bar damper's spring fixing rod is inserted into the outer cylinder of the spring fixing rod. The outer diameter of the inner rod is not equal to the inner diameter of the outer cylinder; that is, the outer diameter of the inner rod is smaller than the inner diameter of the outer cylinder. Therefore, after the inner rod is inserted into the outer cylinder, it does not move in a completely linear motion, but mostly in a short-range arc. This requires the damping spring outside the spring fixing rod to also support this small-range arc movement. A single spring would suffice, as the spring itself supports a certain degree of curvature and bending. However, if a composite telescopic structure is formed with the spring, the material and structure must fit tightly with the spring to work together. Ordinary pneumatic and hydraulic rods cannot meet this requirement. The material and structure used in this invention have an inner diameter that is the same as the outer diameter of the spring. The inner wall of the damping adjustment hoop fits tightly against the outer wall of the spring coil and rubs against it, providing the required damping. It can also achieve a fitting movement with the curvature of the spring, forming a composite structure that provides adjustable damping.

[0015] Furthermore, an unexpected discovery during the experiment was that when the damping structure is stretched, from the actual stretching amplitude to the maximum impact value, the length remains constant while the tensile force gradually decreases. Conversely, during compression, from the actual compression amplitude to the maximum impact value, the length remains constant while the compressive force gradually decreases. This differs from a standalone damping spring, where the tensile force continuously increases during stretching and the compressive force continuously increases during compression, resulting in a different force release mechanism. This manifests as the damper compressing when a vehicle goes over a pothole, but its action time increases; conversely, when going over a bump, the damper stretches, and its action time also increases. Based on this characteristic, the user experience in practical applications is completely different.

[0016] Furthermore, adjusting the position and length of the damping adjustment hoop allows for adjustment of the overall damping of the damper within a certain range. The longer the damping adjustment hoop, the greater the increase in total damping of the entire damper, and the longer it takes for the damping spring to return to its initial state. For example, a spring with a wire diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils (excluding the spring fixing hook), fitted with a rubber adjustment hoop with an inner diameter of 15 mm, a length of 15 mm, and a thickness of 1 mm, takes approximately 2 seconds to return to its initial position after being stretched 30 mm using a digital push-pull force gauge and then released. However, when the length of the rubber adjustment hoop is 45 mm, the time to return to the initial position is 8 seconds.

[0017] The application of this structure in anti-roll bar dampers provides a different experience compared to single springs, and it also offers a different experience in other application scenarios because the damping structure releases damping in a different way.

[0018] Specific experiments on beneficial effects 1. The spring has a wire diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils (excluding the spring retaining hook). Using a digital push-pull force gauge, this spring is stretched 30 mm, yielding a force of 39 N. Then, the same spring is fitted with a rubber adjusting clamp (15 mm inner diameter, 15 mm length, 1 mm thickness), positioned 8 mm from the spring's retaining end. Using the same force gauge again, it is stretched 30 mm and held at an initial value of 46 N. After 2 seconds, the force decreases to 39 N, indicating that the rubber adjusting clamp prevents the spring from stretching, and then the previously restrained portion of the spring is released within a few seconds.

[0019] When applied to anti-roll bar dampers in vehicles, the damping springs in traditional anti-roll bar dampers only provide tension. Increasing the spring wire diameter increases this tension. However, since the damping spring also provides tension during steering, a larger wire diameter, while ensuring vehicle handling, makes the steering wheel heavier, affecting ride comfort. The rubber adjusting clamp, however, allows for increased anti-roll bar damping without increasing the spring wire diameter, without increasing steering wheel resistance, thus ensuring a comfortable ride.

[0020] 2. The spring has a wire diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 20 coils (excluding the spring retaining hook). Using a digital push-pull force gauge, compress this spring by 20 mm, yielding a compression value of 25 N. Then, using the same spring, attach a rubber adjusting clamp with an inner diameter of 15 mm and a length of 15 mm, positioned 8 mm from the spring retaining end. Using the same force gauge again, compress it by 20 mm, initially yielding a value of 35 N. After 2 seconds, the compression decreases to 25 N, indicating that the rubber adjusting clamp prevents spring compression, and the previously prevented portion of the spring is released within a few seconds.

[0021] The spring has a wire diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils (excluding the spring retaining hook). Using a digital push-pull force gauge, this spring is stretched by 30 mm, yielding a tension of 40 N. Then, the same spring is fitted with a rubber adjusting clamp (15 mm inner diameter, 30 mm length, 1 mm thickness), positioned 8 mm from the spring retaining end. Using the same force gauge, it is stretched by 30 mm and held at an initial value of 49 N. This value decreases to 43 N after 2 seconds and to 39 N after 6 seconds. This demonstrates that the rubber adjusting clamp prevents the spring from stretching further, and that as the length increases, the overall damping damping increases even when the entire damping spring is stretched to the same length.

[0022] The spring wire has a diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils (excluding the spring retaining hook). Using a digital push-pull force gauge, this spring is stretched 30 mm, yielding a force of 40 N. Then, the same spring is fitted with a rubber adjusting clamp (15 mm inner diameter, 15 mm length, 2 mm thickness), positioned 8 mm from the spring retaining end. Using the same force gauge again, it is stretched 30 mm and held at an initial value of 46 N. After 2 seconds, the value decreases to 39 N. This indicates that the rubber adjusting clamp prevents the spring from stretching further, and that as the thickness increases, the entire damping spring stretches to the same length without an increase in stretching damping.

[0023] The spring has a wire diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils (excluding the spring retaining hook). Using a digital push-pull force gauge, this spring is stretched 30 mm, yielding a force of 39 N. Then, the same spring is fitted with a rubber adjusting clamp (15 mm inner diameter, 15 mm length, 3 mm thickness), positioned 8 mm from the spring retaining end. Using the same force gauge, it is stretched 30 mm and held at an initial force of 46.5 N. After 2 seconds, the force decreases to 40 N. This indicates that the rubber adjusting clamp prevents the spring from stretching further, and that as the thickness increases, the entire damping spring stretches to the same length without an increase in stretching damping.

[0024] The spring has a wire diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils (excluding the spring retaining hook). Using a digital push-pull force gauge, this spring is stretched by 30 mm, yielding a force of 39 N. Then, the same spring is fitted with a rubber adjusting clamp (15 mm inner diameter, 45 mm length, 1 mm thickness), positioned 8 mm from the spring retaining end. Using the same force gauge again, it is stretched by 30 mm and held at an initial value of 52 N. After 2 seconds, the value decreases to 47 N, indicating that the rubber adjusting clamp prevents the spring from stretching further. Furthermore, as the length increases, the overall damping spring stretches to the same length, and the stretching damping also increases.

[0025] To facilitate observation of the effect of the compressed rubber adjusting clamp on the composite structure, a spring with a wire diameter of 1.6 mm, an outer diameter of 18 mm, a length of 140 mm, and 13 coils was used for compression. The spring was compressed 20 mm using a digital push-pull force gauge, yielding a pressure of 24 N. Then, using the same spring, a rubber adjusting clamp with an inner diameter of 18 mm, a length of 40 mm, and a thickness of 3 mm was fitted, positioned 20 mm from the fixed end of the spring. Using the same force gauge again, it was compressed 20 mm, initially yielding a value of 28 N. After holding the clamp still for 2 seconds, the pressure decreased to 24 N, demonstrating that the rubber adjusting clamp prevented the spring from compressing.

[0026] To facilitate observation of the effect of the compressed rubber adjusting clamp on the composite structure, a spring with a wire diameter of 1.4 mm, an outer diameter of 18 mm, a length of 140 mm, and 13 coils was used for compression. The spring was compressed 20 mm using a digital push-pull force gauge, yielding a pressure of 18 N. Then, using the same spring, a rubber adjusting clamp with an inner diameter of 18 mm, a length of 40 mm, and a thickness of 3 mm was fitted, positioned 20 mm from the fixed end of the spring. Using the same force gauge again, it was compressed 20 mm, initially yielding a value of 24 N. After holding the clamp still, the pressure decreased to 18 N after 2 seconds, demonstrating that the rubber adjusting clamp prevented the spring from compressing. Attached Figure Description

[0027] Figure 1 A schematic diagram illustrating the structure of a composite damping spring. Figure 2 A schematic diagram illustrating the structure of the damping adjustment hoop. Figure 3 This illustration shows the application of a composite damping spring structure in an anti-roll bar damper. Figure reference numerals: 1. Left end spring fixing hook; 2. Right end spring fixing hook; 3. Damping adjusting clamp; 4. Damping spring; 5. Universal joint connecting the large-hole end fixing clamp to the spring fixing rod; 6. Outer cylinder of the spring fixing rod; 7. Large-hole end fixing clamp; 8. Universal joint connecting the small-hole end fixing clamp to the inner rod of the damping adjusting rod; 9. Small-hole end fixing clamp; 10. Inner rod of the spring fixing rod. Components 1, 2, 3, and 4 constitute the composite structure of this invention. Implementation

[0028] The spring wire has a diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils, excluding the spring retaining hook. A rubber adjusting clamp is fitted onto the damping spring, with an inner diameter of 15 mm, a length of 45 mm, a thickness of 1 mm, and is positioned 8 mm from the spring retaining end.

[0029] The spring wire has a diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils, excluding the spring retaining hook. A rubber adjusting clamp is fitted onto the damping spring, with an inner diameter of 15 mm, a length of 45 mm, a thickness of 2 mm, and is positioned 6 mm from the spring retaining end. The spring wire has a diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 32 coils, excluding the spring retaining hook. A rubber adjusting clamp is fitted onto the damping spring, with an inner diameter of 15 mm, a length of 30 mm, and a thickness of 1 mm, positioned 6 mm from the spring retaining end. The spring wire has a diameter of 0.8 mm, an outer diameter of 8 mm, a length of 60 mm, and 60 coils, excluding the spring retaining hook. A rubber adjusting clamp is fitted onto the damping spring, with an inner diameter of 8 mm, a length of 415 mm, and a thickness of 0.5 mm, positioned 6 mm from the spring retaining end.

[0030] The spring wire has a diameter of 10 mm, an outer diameter of 20 mm, a length of 200 mm, and 10 coils, excluding the spring retaining hook. A rubber adjusting clamp is fitted onto the damping spring, with an inner diameter of 20 mm, a length of 100 mm, and a thickness of 5 mm, positioned 20 mm from the spring retaining end.

[0031] This composite spring structure with a damping adjustment collar is applied to the anti-roll bar damper. The spring wire diameter is 2.0 mm, outer diameter is 16 mm, length is 78 mm, and number of coils is 32 (excluding the spring retaining hook). The rubber adjustment collar is fitted onto the damping spring, with an inner diameter of 15 mm, length of 30 mm, and thickness of 1 mm, positioned 6 mm from the spring retaining end. The left spring retaining hook connects to the outer cylinder of the spring retaining rod and then to the universal joint of the large-hole end retaining collar. The right spring retaining hook connects to the inner rod of the spring retaining rod and then to the universal joint of the small-hole end retaining collar. The outer diameter of the outer cylinder of the spring retaining rod is 12 mm, the inner diameter is 10 mm, and the diameter of the inner rod of the spring retaining rod is 6 mm.

[0032] This composite spring structure with a damping adjustment clamp is applied to the anti-roll bar damper. The spring wire diameter is 2.1 mm, outer diameter is 16 mm, length is 80 mm, and number of coils is 31 (excluding the spring retaining hook). The rubber adjustment clamp is fitted onto the damping spring, with an inner diameter of 16 mm, length of 24 mm, and thickness of 2 mm. It is positioned 8 mm from the outermost coil of the damping spring at the outer end of the spring retaining rod. The left spring retaining hook connects to the top of the outer spring retaining rod and then to the fisheye bearing of the large-hole end retaining clamp. The right spring retaining hook connects to the inner rod of the spring retaining rod and then to the fisheye bearing of the small-hole end retaining clamp. The outer diameter of the spring retaining rod outer cylinder is 12 mm, the inner diameter is 10 mm, and the diameter of the inner spring retaining rod is 4 mm. The small-hole end retaining clamp can fix anti-roll bar rods with inner diameters of 7 mm to 12 mm, and the large-hole end retaining clamp can fix anti-roll bars with diameters of 18 mm to 24 mm.

[0033] The spring wire has a diameter of 2.0 mm, an outer diameter of 16 mm, a length of 78 mm, and 39 coils, excluding the spring retaining hook. A rubber adjusting clamp is fitted onto the damping spring, with an inner diameter of 15 mm, a length of 30 mm, and a thickness of 1 mm, positioned 6 mm from the spring retaining end. 0028 Spring wire diameter 2.0 mm, outer diameter 16 mm, length 78 mm, number of coils 32, excluding spring fixing hook. A rubber adjusting clamp is fitted onto the damping spring, inner diameter 15 mm, length 45 mm, thickness 1 mm, positioned 8 mm from the spring fixing end. The outer cylinder of the spring fixing rod has an outer diameter of 12 mm, the inner end of the inner rod has an inner diameter of 8 mm, the outer cylinder is 72 mm long, the inner rod has a diameter of 4 mm and a length of 65 mm, and a shaft spring wire diameter of 1.2 mm, outer diameter 10 mm, and length 25 mm is fitted onto the inner rod. One end of the spring fixing hook is inserted into one end of the fixing clamp on the outer cylinder of the spring fixing rod, and the other end is inserted into the connecting end of the inner rod of the spring fixing rod. The inner rod is inserted into the outer cylinder. After the two ends of the spring fixing hook are fixed, they are connected to the fisheye bearings at both ends, and then the fixing clamps at both ends are connected. After the entire anti-roll bar damper is assembled, the small hole end fixing hoop is connected to the anti-roll bar hanger, and the large hole end fixing hoop is connected to the anti-roll bar. Then, the steering wheel is turned to the left and right to the end respectively in place. There is no abnormal noise. Then, it is driven at a speed of 50 kilometers per hour for 5 kilometers. The driving is smooth, which shows that the invented composite spring structure meets the requirements of practical application.

Claims

1. A composite damping spring structure, characterized in that: It includes a damping spring, a spring fixing hook, and a damping adjustment hoop; the spring fixing hook includes a left-end spring fixing hook and a right-end spring fixing hook, which are welded or integrally connected to the damping spring; the damping adjustment hoop is fitted over the damping spring, and the inner wall of the damping adjustment hoop is tightly fitted to the outer wall of the damping spring.

2. The composite damping spring structure according to claim 1, characterized in that: One end of the spring-fixing hook is connected to the damping spring, and the other end is connected to the device that needs adjustment in actual use.

3. The composite damping spring structure according to claim 1, characterized in that: The damping spring is a tension spring or a compression spring, or a spring with a spacing between spring coils ranging from 0 to 20 millimeters.

4. The composite damping spring structure according to claim 1, characterized in that: The damping adjustment hoop is fitted outside the damping spring. The inner diameter of the damping adjustment hoop is the same as the outer diameter of the damping spring. The damping adjustment hoop moves between the two ends of the damping spring to adjust the damping as needed.

5. The composite damping spring structure according to claim 1, characterized in that: The inner diameter of the damping adjustment hoop ranges from 5 mm to 80 mm, the thickness ranges from 0.5 mm to 5 mm, and the length ranges from 5 mm to 180 mm.

6. The composite damping spring structure according to claim 1, characterized in that: The damping adjustment hoop is made of rubber, silicone, and elastic rubber.

7. The composite damping spring structure according to claim 1, characterized in that: The wire diameter of the damping spring ranges from 0.2 mm to 10 mm, and the outer diameter ranges from 5 mm to 80 mm.

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