Reducing spring shock absorber

Abstract

The utility model discloses a variable-diameter spring shock absorber, which belongs to the technical field of shock absorbers and comprises a damper, a lower lining and a lower hanging ring are welded at the bottom end of the damper, a dustproof buffer sleeve is arranged at the top end of the damper, an upper spring plate is welded at the top end of the dustproof buffer sleeve, and a lower lining is welded at the bottom end of the upper spring plate. A lower spring plate is welded to the lower portion of the damper, and a spring is arranged between the upper spring plate and the lower spring plate. The variable-diameter spring is selected as the spring, the diameter of the spring is the largest in the middle, the diameter of the spring is gradually reduced towards the two sides along the largest diameter of the middle, the spring obtains a more ideal force value curve in the compression rebound process when stressed, and the performance of the shock absorber is improved. The dustproof buffering sleeve is arranged at the front end of the damper, the inner diameter of the dustproof buffering sleeve is slightly larger than the outer diameter of the damper, the amount of dust entering the damper is greatly reduced, the dust isolation and removal effect is achieved, and the service life of the shock absorber is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock absorbers, and in particular relates to a variable diameter spring shock absorber. Background Art

[0002] A spring shock absorber is a device that utilizes the resilience of a spring disk in combination with a damper to achieve energy absorption and vibration reduction. The spring shock absorber has a simple structure and is easy to assemble. It is widely used in the automotive, aviation, and equipment manufacturing fields.

[0003] The spring of a conventional spring shock absorber is a fixed-diameter spring. The shock absorber rebounds relatively stiffly when under pressure, and the spring rebounds poorly when subjected to large impact vibrations. At the same time, the operating environment of the shock absorber is harsh and dusty. Dust easily accumulates inside the damper of a conventional shock absorber, causing damage to the shock absorber. Utility Model Content

[0004] The utility model aims to provide a variable diameter spring damper to solve the problems of the existing coupling in the use process mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a variable diameter spring shock absorber, comprising a damper, a lower bushing and a lower hanging ring are welded to the bottom end of the damper, a dustproof buffer sleeve is arranged at the top end of the damper, an upper spring disk is welded to the top end of the dustproof buffer sleeve, a lower spring disk is welded to the lower part of the damper, a spring is arranged between the upper spring disk and the lower spring sheet, the spring has different diameters at different positions in the axial direction of the damper, a connecting rod extends from the inside of the damper, the outermost end of the connecting rod passes through the dustproof buffer sleeve and the lower spring disk and is fixedly connected to the upper bushing.

[0006] Preferably, along the lower spring disk to the upper spring disk, the diameter of the spring first increases and then decreases.

[0007] Preferably, the diameter of the spring reaches its maximum at the middle of the damper.

[0008] Preferably, the two ends of the spring are respectively welded and fixed to the upper spring disk and the lower spring disk, and the spring is also press-fitted and fixed by a connecting rod.

[0009] Preferably, the dustproof buffer sleeve completely covers the upper end surface of the damper.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] A variable diameter spring is used as the spring. The diameter of the spring is the largest in the middle and gradually decreases toward both sides along the largest diameter in the middle. When under pressure, the spring of this scheme obtains a more ideal force curve in the compression and rebound process, thereby improving the performance of the shock absorber. A dustproof buffer sleeve is provided at the front end of the damper. The inner diameter of the dustproof buffer sleeve is slightly larger than the outer diameter of the damper, which greatly reduces the amount of dust entering the damper, thereby achieving the effect of dust isolation and removal, and is beneficial to increasing the service life of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] In the figure: 1. lower lifting ring; 2. lower bushing; 3. lower spring plate; 4. damper; 5. dustproof buffer sleeve; 6. upper spring plate; 7. connecting rod; 8. upper bushing; 9. spring. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Reference Figure 1 A variable diameter spring 9 shock absorber includes a damper 4, a lower bushing 2 and a lower hanging ring 1 are welded to the bottom end of the damper 4, a dustproof buffer sleeve 5 is arranged at the top end of the damper 4, an upper spring disk 6 is welded to the top end of the dustproof buffer sleeve 5, a lower spring disk 3 is welded to the lower part of the damper 4, a spring 9 is arranged between the upper spring disk 6 and the lower spring 9 sheet, and the diameter of the spring 9 is different at different positions in the axial direction of the damper 4, a connecting rod 7 extends from the inside of the damper 4, and the outermost end of the connecting rod 7 passes through the dustproof buffer sleeve 5 and the lower spring disk 3 and is fixedly connected to the upper bushing 8.

[0016] In view of the problem that the existing spring 9 shock absorber damper 4 is easy to accumulate dust and affect the use, the present technology is provided with a dustproof buffer sleeve 5 at the front end of the damper 4, the inner diameter of the dustproof buffer sleeve 5 is slightly larger than the outer diameter of the damper 4, and the gap between the damper 4 and the dustproof buffer sleeve 5 is extremely small, thereby blocking most of the dust, greatly reducing the amount of dust entering the damper 4, playing a dust isolation and dust removal effect, which is conducive to prolonging the service life of the shock absorber;

[0017] In view of the problems of poor mechanical properties and poor rebound performance of the current spring 9 shock absorber, the spring 9 of this solution uses a variable diameter spring 9. The diameter of the spring 9 is the largest in the middle and gradually decreases toward both sides along the largest diameter in the middle. When the spring 9 is compressed, since the largest diameter is in the middle, the spring 9 will first compress the springs 9 on both sides and finally compress the spring 9 in the middle when it is compressed. As the pressure increases, the elastic force of the spring 9 increases (exceeding the linear increase of the spring 9 with the same diameter). Therefore, the spring 9 of this solution obtains a more ideal force value curve during the compression and rebound process, thereby improving the performance of the shock absorber.

[0018] Furthermore, along the lower spring disk 3 to the upper spring disk 6, the diameter of the spring 9 first increases and then decreases.

[0019] Furthermore, the diameter of the spring 9 reaches a maximum at the middle of the damper 4 .

[0020] Through this technical solution, the diameter of the spring 9 changes gradually. When it is in the middle of the damper 4, the diameter of the spring 9 reaches its maximum, and the elastic force in the middle of the spring 9 is the largest. When the spring 9 is under pressure, the springs 9 on both sides will be compressed first, and then the spring 9 in the middle will be compressed. As the pressure increases, the elastic force of the spring 9 increases (exceeding the linear increase of the spring 9 with the same diameter), so a better force value curve can be obtained, and the performance of the shock absorber is better.

[0021] Furthermore, two ends of the spring 9 are respectively welded and fixed to the upper spring disk 6 and the lower spring disk 3 , and the spring 9 is also press-fitted and fixed by a connecting rod.

[0022] Furthermore, the dustproof buffer sleeve 5 completely covers the upper end surface of the damper 4 .

[0023] Through this technical solution, the end face of the damper 4 is completely covered by the dustproof buffer sleeve 5, and a dustproof buffer block is arranged in the dustproof buffer sleeve 5. The gap between the two is extremely small, so that dust needs to pass through a narrow gap before entering, thereby intercepting most of the dust, greatly reducing the amount of dust entering the damper 4, and the use effect is better; the spring 9 uses a variable diameter spring 9, the diameter of the spring 9 is the largest in the middle, and gradually decreases to both sides along the maximum diameter in the middle. When the spring 9 is compressed, since the largest diameter is in the middle, the spring 9 will first compress the springs 9 on both sides when it is compressed, and finally compress the spring 9 in the middle. As the pressure increases, the elastic force of the spring 9 increases (exceeding the linear increase of the spring 9 with the same diameter). Therefore, the spring 9 of this solution obtains a more ideal force value curve during the compression and rebound process, thereby improving the performance of the shock absorber.

[0024] Working principle: A dustproof buffer sleeve 5 is provided at the front end of the damper 4. The inner diameter of the dustproof buffer sleeve 5 is slightly larger than the outer diameter of the damper 4. The gap between the damper 4 and the dustproof buffer sleeve 5 is extremely small, thereby blocking most of the dust and greatly reducing the amount of dust entering the damper 4. It has the effect of isolating and removing dust, which is beneficial to improving the service life of the shock absorber. The spring 9 uses a variable diameter spring 9. The diameter of the spring 9 is the largest in the middle and gradually decreases toward both sides along the maximum diameter in the middle. When the spring 9 is compressed, since the largest diameter is in the middle, the spring 9 will first compress the springs 9 on both sides when it is compressed, and finally compress the spring 9 in the middle. As the pressure increases, the elastic force of the spring 9 increases (exceeding the linear increase of the spring 9 with the same diameter). Therefore, the spring 9 of this scheme obtains a more ideal force value curve during the compression and rebound process, thereby improving the performance of the shock absorber.

[0025] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present invention and features of different embodiments or examples without contradiction.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable diameter spring damper, characterized in that: It includes a damper, wherein a lower bushing and a lower hanging ring are welded to the bottom end of the damper, a dustproof buffer sleeve is arranged at the top end of the damper, an upper spring disk is welded to the top end of the dustproof buffer sleeve, a lower spring disk is welded to the lower part of the damper, a spring is arranged between the upper spring disk and the lower spring sheet, the spring has different diameters at different positions in the axial direction of the damper, a connecting rod extends from the inside of the damper, the outermost end of the connecting rod passes through the dustproof buffer sleeve and the lower spring disk and is fixedly connected to the upper bushing.

2. A variable diameter spring damper according to claim 1, characterized in that: From the lower spring disk to the upper spring disk, the diameter of the spring first increases and then decreases.

3. The variable diameter spring damper according to claim 2, characterized in that: The spring has a maximum diameter at the very center of the damper.

4. The variable diameter spring damper according to claim 1, characterized in that: The two ends of the spring are respectively welded and fixed to the upper spring disk and the lower spring disk, and the spring is also pressed and fixed by a connecting rod.

5. The variable diameter spring damper according to claim 1, characterized in that: The dustproof buffer sleeve completely covers the upper end surface of the damper.

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