Air shock absorber
Through the main air chamber, secondary air chamber and buffer air chamber structure of the air shock absorber, combined with air pressure adjustment and explosion-proof air chamber design, the problems of inconvenient adjustment and high maintenance costs of existing shock absorbers are solved, and flexible shock absorption and efficient use are achieved.
Patent Information
- Application Number
- CN202422621618.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Existing hydraulic and mechanical spring shock absorbers have problems such as inconvenient adjustment, high maintenance costs and potential environmental pollution, and long-term use can easily lead to reduced shock absorption effect.
An air shock absorber is designed to achieve shock absorption through the structure of the main air chamber, the secondary air chamber and the buffer air chamber, and the air pressure is adjusted through the air nozzle, combined with the explosion-proof air chamber to prevent the air pressure from being too high, and the structure is simple and easy to maintain.
Flexible shock absorption adjustment is achieved, reducing maintenance costs, improving service life, and preventing device damage caused by excessive air pressure.
Smart Images
Figure CN223178043U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of shock absorbers, and more specifically, particularly relates to an air shock absorber. Background Art
[0002] A shock absorber is used to suppress the oscillation when the spring rebounds after absorbing shock and the impact from the road surface. It is widely used in automobiles to accelerate the attenuation of the vibration of the vehicle frame and the body, so as to improve the ride comfort of the automobile.
[0003] Existing shock absorbers usually rely on hydraulic or mechanical spring systems to achieve the shock absorption function. However, such shock absorbers often have problems such as inconvenient adjustment and high maintenance costs. In addition, hydraulic shock absorbers may cause environmental pollution due to oil leakage, while spring shock absorbers may become fatigued after long-term use, thus reducing the shock absorption effect. Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an air shock absorber is provided in order to achieve a more practical value purpose. Content of the Utility Model
[0004] In order to solve the above technical problems, the utility model provides an air shock absorber, which is achieved by the following specific technical means:
[0005] An air shock absorber includes a main cylinder body and a shock absorber rod. The bottom end of the shock absorber rod is connected with a piston, and the outer side wall of the piston is slidably fitted with the inner wall of the main cylinder body. The bottom end of the main cylinder body is connected with a base, and a main air chamber is arranged between the main cylinder body near the base and the piston. A secondary air chamber is arranged between the shock absorber rod and the piston, and the secondary air chamber is independent of the main air chamber. The top end of the main cylinder body is connected with a limit ring, and the shock absorber rod is slidably fitted with the inner wall of the top end of the limit ring. A buffer air chamber is arranged between the piston and the limit ring. The bottom end of the shock absorber rod is provided with a ventilation hole, and both ends of the ventilation hole are communicated with the secondary air chamber and the buffer air chamber respectively. One side of the top end of the shock absorber rod and one side of the bottom end of the base are both provided with air ducts, and one end of each air duct is hermetically installed with an air nozzle one and an air nozzle two respectively.
[0006] Further, the outer side of the main cylinder body is provided with an external thread, and the bottom end of the limit ring and the top end of the base are provided with thread ports matching the external thread.
[0007] Further, three groups of installation grooves are arranged on the inner wall of the top opening of the limit ring from top to bottom, and a dust-proof ring, an air seal and a linear bearing one that are fitted with the outer wall of the shock absorber rod are respectively installed in the three groups of installation grooves.
[0008] Further, two sets of annular grooves are provided on the outer side of the piston, and a linear bearing II and a sealing ring II that are in contact with the inner wall of the main cylinder body are respectively installed in the two sets of annular grooves; the piston is connected to the bottom end of the shock-absorbing rod by a thread, and a buffer pad is installed at the top end of the piston, and the buffer pad is sleeved on the outer side of the shock-absorbing rod.
[0009] Further, a sealing ring I and a sealing ring III are respectively press-fitted at the joints of the main cylinder body with the limiting ring and the base.
[0010] Further, an explosion-proof air chamber communicating with the main air chamber is provided at the inner top end of the base.
[0011] Further, the opening diameter at the top end of the explosion-proof air chamber is smaller than the inner diameter of the main cylinder body.
[0012] Further, a fixing ring is also threadedly connected between the main cylinder body near the limiting ring and the base, and fixing shafts are symmetrically installed on the outer side of the fixing ring.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. By arranging a main air chamber, a secondary air chamber and a buffer chamber between the shock-absorbing rod, the piston and the main cylinder body, the utility model can realize that during use, by adjusting the air pressure in the main air chamber to be greater than that in the secondary air chamber, the shock-absorbing rod can be lifted. During use, the shock absorption can be realized by the way that the piston compresses the main air chamber. At the same time, since the buffer air chamber is communicated with the secondary air chamber through a vent hole, when the shock-absorbing rod moves downward, the volume of the buffer air chamber increases, and part of the gas in the secondary air chamber is sucked into the buffer chamber. When the shock-absorbing rod moves upward and recovers, the volume of the buffer air chamber becomes smaller, and at this time, the buffer air chamber is pressed into the buffer chamber. During this process, the buffering can be realized.
[0015] 2. By installing the air nozzle I and the air nozzle II, the utility model can quickly adjust the air pressures in the secondary air chamber and the main air chamber through the air nozzle I and the air nozzle II during use, change the overall shock absorption characteristics, has high flexibility, and at the same time has a simple structure and low maintenance cost.
[0016] 3. By arranging an explosion-proof air chamber on the base, the utility model can effectively prevent the phenomenon that the air pressure is too high and the main cylinder body bursts when the piston compresses to the bottom of the main cylinder body, and has a high service life. Description of the Drawings
[0017] Figure 1 is a schematic cross-sectional view of the utility model.
[0018] Figure 2 is Figure 1 the enlarged schematic view of part A in
[0019] Figure 3 is the schematic disassembled view of the structure of the utility model.
[0020] Figure 4 This is the overall assembly schematic diagram of the present utility model.
[0021] Figure 5 This is the installation schematic diagram of the present utility model.
[0022] In the figure, the corresponding relationship between the component names and the attached drawing numbers is as follows:
[0023] 1. Main cylinder body; 2. Shock-absorbing rod; 3. Limit ring; 4. Piston; 5. Fixed ring; 6. Base; 7. Nozzle 1; 8. Nozzle 2; 9. Fixed shaft; 10. Dust-proof ring; 11. Air seal; 12. Linear bearing 1; 13. Seal ring 1; 14. Linear bearing 2; 15. Seal ring 2; 16. Buffer pad; 17. Seal ring 3;
[0024] 100. Main air chamber; 200. Auxiliary air chamber; 300. Explosion-proof air chamber; 400. Buffer air chamber; 500. Vent hole. Specific embodiments
[0025] The following further describes the embodiments of the present utility model in detail in conjunction with the attached drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.
[0026] In the description of the present utility model, unless otherwise specified, "a plurality" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] Example:
[0029] As shown in the attached Figure 1 to the attached Figure 5 figure:
[0030] The utility model provides an air shock absorber, which comprises a main cylinder body 1 and a shock absorber rod 2. A piston 4 is connected to the bottom end of the shock absorber rod 2, and the outer side wall of the piston 4 is in sliding fit with the inner wall of the main cylinder body 1. A base 6 is connected to the bottom end of the main cylinder body 1, and a main air chamber 100 is arranged between the main cylinder body 1 near the base 6 and the piston 4. A secondary air chamber 200 is arranged between the shock absorber rod 2 and the piston 4, and the secondary air chamber 200 is independent of the main air chamber 100. A limiting ring 3 is connected to the top end of the main cylinder body 1, and the shock absorber rod 2 is in sliding fit with the inner wall of the top end of the limiting ring 3. A buffer air chamber 400 is arranged between the piston 4 and the limiting ring 3. An air vent hole 500 is arranged at the bottom end of the shock absorber rod 2, and both ends of the air vent hole 500 are communicated with the secondary air chamber 200 and the buffer air chamber 400 respectively. Air channels are arranged on one side of the top end of the shock absorber rod 2 and one side of the bottom end of the base 6, and an air nozzle one 7 and an air nozzle two 8 are respectively and sealingly installed at one ends of the air channels. Through the installation of the air nozzle one 7 and the air nozzle two 8, the air pressures of the secondary air chamber 200 and the main air chamber 100 can be quickly adjusted during use, the overall shock absorption characteristics can be changed, the flexibility is relatively high, and at the same time, the structure is simple and the maintenance cost is low.
[0031] Wherein, external threads are arranged on the outer side of the main cylinder body 1, and threaded ports matching the external threads are arranged at the bottom end of the limiting ring 3 and the top end of the base 6, so as to facilitate the quick installation of the limiting ring 3 and the base 6, which is beneficial to production assembly and use.
[0032] Wherein, three groups of installation grooves are arranged on the inner wall of the top opening of the limiting ring 3 from top to bottom. A dust-proof ring 10, an air seal 11 and a linear bearing one 12 which are in fit with the outer wall of the shock absorber rod 2 are respectively installed in the three groups of installation grooves. The dust-proof ring 10 can effectively isolate external rainwater, dust and other sundries during use to prevent them from entering, so as to ensure the smoothness of the overall use. The air seal 11 can effectively seal the limiting ring 3 and the shock absorber rod 2 to prevent air leakage. The arrangement of the linear bearing one 12 can effectively improve the smoothness of the operation of the shock absorber rod 2 inside the limiting ring 3, so as to facilitate its efficient telescopic movement.
[0033] Among them, two sets of annular grooves are provided on the outer side of the piston 4, and a linear bearing two 14 and a sealing ring two 15 that are in contact with the inner wall of the main cylinder body 1 are respectively installed in the two sets of annular grooves. Through the setting of the linear bearing two 14, it can ensure that the piston 4 runs smoothly on the inner wall of the main cylinder body 1 and is not prone to deviation. At the same time, the installation of the sealing ring two 15 can effectively ensure the sealing performance between the piston 4 and the main cylinder body 1 to prevent air leakage in the buffer air chamber 400 during use; the piston 4 is connected to the bottom end of the shock-absorbing rod 2 by threads, and a buffer pad 16 is installed at the top end of the piston 4, and the buffer pad 16 is sleeved on the outer side of the shock-absorbing rod 2 to prevent the piston 4 from hitting the limit ring 3 when it rebounds, so as to ensure good sound insulation during the overall operation and improve the service life at the same time.
[0034] Among them, a sealing ring one 13 and a sealing ring three 17 are respectively press-fitted at the joints of the main cylinder body 1 with the limit ring 3 and the base 6 to ensure good sealing performance between the limit ring 3 and the base 6 and the main cylinder body 1 to prevent air leakage during use.
[0035] Among them, an explosion-proof air chamber 300 communicating with the main air chamber 100 is provided at the inner top end of the base 6. By providing the explosion-proof air chamber 300 on the base 6, it can effectively prevent the phenomenon that the air pressure is too high and the main cylinder body 1 bursts when the piston 4 is compressed to the bottom of the main cylinder body 1, and has a relatively high service life.
[0036] Among them, the opening diameter at the top end of the explosion-proof air chamber 300 is smaller than the inner diameter of the main cylinder body 1 to prevent the piston 4 from entering and compressing the gas in the explosion-proof air chamber 300, causing damage to the main cylinder body 1 or the piston 4, so as to ensure a relatively high service life of the whole.
[0037] Among them, a fixing ring 5 is also threadedly connected between the main cylinder body 1 near the limit ring 3 and the base 6. Fixed shafts 9 are symmetrically installed on the outer side of the fixing ring 5. Through the setting of the fixing ring 5 and the fixed shafts 9 on both sides thereof, it is convenient to fix and install with the installation carrier by means of the fixed shafts 9 during installation, so that during subsequent use, by rotating the main cylinder body 1, the height position of the main cylinder body 1 can be adjusted to adjust the overall support height, and it has relatively high use convenience.
[0038] Working principle of this embodiment: During use, by adjusting the air pressure in the main air chamber 100 to be greater than that in the auxiliary air chamber 200, the jacking of the shock absorber rod 2 is achieved. During use, the shock absorption can be achieved by using the piston 4 to compress the main air chamber 100. At the same time, since the buffer air chamber 400 is connected to the auxiliary air chamber 200 through the ventilation hole 500, when the shock absorber rod 2 moves downward, the volume of the buffer air chamber 400 increases, and part of the gas in the auxiliary air chamber 200 is sucked into the buffer air chamber 400. When the shock absorber rod 2 moves upward and recovers, the volume of the buffer air chamber 400 becomes smaller, and at this time, the buffer air chamber 400 is pressed into the auxiliary air chamber 200. During this process, buffering can be achieved. On the contrary, when the air pressure in the main air chamber 100 is adjusted to be less than that in the auxiliary air chamber 200, the shock absorber can be used as an anti-dragging shock absorber to meet different usage requirements.
[0039] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.
Claims
1. An air shock absorber, comprising a main cylinder body (1) and a shock absorber rod (2), a piston (4) is connected to the bottom end of the shock absorber rod (2), and the outer side wall of the piston (4) is slidably attached to the inner wall of the main cylinder body (1), and is characterized in that: The bottom end of the main cylinder body (1) is connected with a base (6), and a main air chamber (100) is arranged between the main cylinder body (1) near the base (6) and the piston (4). A secondary air chamber (200) is arranged between the shock-absorbing rod (2) and the piston (4), and the secondary air chamber (200) is independent of the main air chamber (100). The top end of the main cylinder body (1) is connected with a limit ring (3), and the shock-absorbing rod (2) is slidably fitted with the inner wall of the top end of the limit ring (3). A buffer air chamber (400) is arranged between the piston (4) and the limit ring (3). An air vent hole (500) is arranged at the bottom end of the shock-absorbing rod (2), and both ends of the air vent hole (500) are communicated with the secondary air chamber (200) and the buffer air chamber (400) respectively. An air passage is arranged on one side of the top end of the shock-absorbing rod (2) and one side of the bottom end of the base (6), and a first air nozzle (7) and a second air nozzle (8) are respectively and sealingly installed at one end of the air passage.
2. The air shock absorber according to claim 1, characterized in that: External threads are arranged on the outer side of the main cylinder body (1), and threaded ports matching the external threads are arranged at the bottom end of the limit ring (3) and the top end of the base (6).
3. The air shock absorber according to claim 1, characterized in that: Three groups of installation grooves are arranged on the inner wall of the top opening of the limit ring (3) from top to bottom, and a dust-proof ring (10), an air seal (11) and a first linear bearing (12) which are fitted with the outer wall of the shock-absorbing rod (2) are respectively installed in the three groups of installation grooves.
4. The air shock absorber according to claim 1, wherein: Two groups of annular grooves are arranged on the outer side of the piston (4), and a second linear bearing (14) and a second sealing ring (15) which are fitted with the inner wall of the main cylinder body (1) are respectively installed in the two groups of annular grooves. The piston (4) is connected with the bottom end of the shock-absorbing rod (2) by threads. A buffer pad (16) is installed at the top end of the piston (4), and the buffer pad (16) is sleeved on the outer side of the shock-absorbing rod (2).
5. The air shock absorber according to claim 2, wherein: A first sealing ring (13) and a third sealing ring (17) are respectively and tightly installed at the connection positions of the main cylinder body (1) with the limit ring (3) and the base (6).
6. The air shock absorber according to claim 1, wherein: An explosion-proof air chamber (300) communicated with the main air chamber (100) is arranged at the inner top end of the base (6).
7. The air shock absorber according to claim 6, characterized in that: The diameter of the top opening of the explosion-proof air chamber (300) is smaller than the inner diameter of the main cylinder body (1).
8. The air shock absorber according to claim 1, wherein: A fixing ring (5) is also connected to the main cylinder body (1) by threads between the limit ring (3) and the base (6), and fixing shafts (9) are symmetrically installed on the outer side of the fixing ring (5).