Damping device

Abstract

The utility model discloses a damping device which comprises a damping device body, and the damping device body comprises a large outer pipe assembly, a small outer pipe assembly and a cock assembly. A positive air chamber is arranged between the large outer pipe assembly and the cock assembly, and a negative air chamber is arranged between the small outer pipe assembly and the cock assembly. An air valve assembly is arranged in the negative air chamber; the valve assembly and the small outer pipe assembly form a valve chamber in the negative air chamber; the shock absorption device is reasonable in structural design, and the shock absorption device body is arranged for shock absorption work; the large outer pipe assembly and the small outer pipe assembly are arranged and used for conducting connection damping work; the cock assembly is arranged and used for connecting the large outer pipe assembly and the small outer pipe assembly; the negative air chamber and the positive air chamber are arranged for pneumatic shock absorption; by arranging the air valve assembly and the air valve chamber, air in the negative air chamber is guided into the air valve chamber to compress air in the positive air chamber for shock absorption during shock absorption work.

Description

Technical Field

[0001] This utility model relates to the field of shock absorbers, and more particularly to a shock-absorbing device. Background Technology

[0002] Because some terrains are uneven, vehicles vibrate up and down as they travel, causing damage to internal components and discomfort or injury to occupants. Therefore, shock absorbers are installed to absorb and cushion the impact force generated by braking or driving over uneven surfaces. Generally, shock absorbers use the resistance generated by a piston to convert the impact force (vibration energy) into heat energy, thus achieving a cushioning effect. In known shock absorbers, the piston rod and piston are connected by fitting the piston onto the piston rod and using a fixing pin that radially passes through both. However, this method of connection leads to force concentration on the fixing pin, making it prone to breakage, and the piston is not securely attached to the piston rod, resulting in poor safety. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a shock absorption device in view of the current state of the technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A shock absorber includes a main body comprising a large outer tube assembly, a small outer tube assembly, and a stopcock assembly disposed between the large and small outer tube assemblies. A positive air chamber is formed between the large outer tube assembly and the stopcock assembly, and a negative air chamber is formed between the small outer tube assembly and the stopcock assembly. A valve assembly is disposed within the negative air chamber. The valve assembly and the small outer tube assembly form a valve chamber within the negative air chamber. The valve chamber and the negative air chamber are connected or isolated via the valve assembly. During shock absorption, the small outer tube assembly moves towards the positive air chamber within the large outer tube assembly, compressing the air in the positive air chamber, and the air in the negative air chamber enters the valve chamber through the valve assembly. During reset, the air in the positive air chamber pushes the end of the small outer tube assembly away from the positive air chamber within the large outer tube assembly to reset, and the air in the valve chamber returns to the valve chamber through the valve assembly.

[0006] The effects achieved by the above components are as follows: The main body of the shock absorber is used for shock absorption; the large and small outer tube assemblies are used for connection and shock absorption; the valve assembly is used to connect the large and small outer tube assemblies; the negative and positive air chambers are used for pneumatic shock absorption; the valve assembly and valve chamber allow air from the negative chamber to be introduced into the valve chamber and then compressed into the positive air chamber for shock absorption. Using a pneumatic method for shock absorption reduces the risk of damage from collisions between internal components, thus improving the durability and practicality of the main body of the shock absorber.

[0007] Preferably, the plug assembly includes a piston and a lower plug; the small outer tube assembly is connected to the piston via a threaded connection, and the large outer tube assembly is connected to the lower plug via a threaded connection; the large outer tube assembly and the lower plug are disposed on the outer periphery of the small outer tube assembly and the piston.

[0008] The effects achieved by the above components are as follows: by setting a piston for connection with the small outer tube assembly and a lower plug for connection with the large outer tube assembly, and by using threads for connection, the connection is made more convenient; by setting the piston and small outer tube assembly inside the large outer tube assembly and the lower plug, it plays a limiting and resisting role during shock absorption.

[0009] Preferably, the valve assembly includes a valve seat, a one-way valve screw, and at least one valve plate; the valve seat is disposed inside the small outer tube assembly and is in contact with the interior of the small outer tube assembly; the one-way valve screw passes through the valve seat; and the valve plate is disposed in the negative pressure chamber at the position where the valve seat and the one-way valve screw are connected.

[0010] The effects achieved by the above components are as follows: by setting the valve seat, it serves to limit the placement of the one-way valve screw; by setting the one-way valve screw, it serves to guide air in one direction; and by setting the valve plate, it serves to limit the contact of the one-way valve screw after installation.

[0011] Preferably, the valve seat is provided with at least one return air hole; the valve plate is provided at the upper end of the air passage hole; the one-way valve screw is provided with an air passage hole; one end of the air passage hole is connected to the negative air chamber and the other end is connected to the valve chamber; a sealing ring is provided at the end of the air passage hole connected to the valve chamber.

[0012] The effects achieved by the above components are as follows: by setting an air passage, air can enter the valve chamber from the negative pressure chamber through the air passage; by setting a return air passage, air in the valve chamber can enter the negative pressure chamber through the return air passage; by setting a sealing ring, air is prevented from entering the valve chamber when vibration damping is not required; and by placing the air passage below the valve plate, air is prevented from flowing back directly from the return air passage during vibration damping operation.

[0013] Preferably, the valve seat has a placement groove on its outer periphery; a sealing ring is provided in the placement groove.

[0014] The effect achieved by the above-mentioned components is that the sealing effect is improved by setting a placement groove for placing the sealing ring.

[0015] Preferably, the large outer tube assembly includes a large outer tube body, a large outer tube sleeve hole, and a large outer tube valve; the large outer tube sleeve hole is located outside the large outer tube body; the positive air chamber is inlet or outlet air through the large outer tube valve.

[0016] The above components achieve the following effects: a large outer tube body is provided for connection with the lower valve, and a large outer tube sleeve hole is provided for external connection; a large outer tube valve is provided for replenishing or releasing air in the positive air chamber according to the user's own needs.

[0017] Preferably, the small outer tube assembly includes a small outer tube body, a small outer tube sleeve hole, and a small outer tube valve; the small outer tube sleeve hole is located outside the small outer tube body; the negative air chamber is inlet or outlet of air through the small outer tube valve.

[0018] The above components achieve the following effects: a small outer tube body is provided for connection with the piston, and a small outer tube sleeve hole is provided for external connection; a small outer tube valve is provided for replenishing or releasing air in the negative air chamber according to the user's own needs.

[0019] Preferably, a sealing ring is provided inside the large outer tube body, and the sealing ring is located at the end of the positive air chamber away from the piston.

[0020] The effect achieved by the above-mentioned components is that, by setting up a sealing ring, they play a role in resisting and preventing impact.

[0021] Preferably, the small outer tube body is provided with an air outlet at one end of the valve chamber; and a wear-resistant ring is provided on the outside of the small outer tube body.

[0022] The effects achieved by the above components are as follows: by setting an air outlet, the air entering the valve chamber can enter between the piston and the lower piston; by setting a wear ring, the noise is reduced.

[0023] Preferably, sealing rings are provided on the piston and the large outer tube body, the lower plug and the small outer tube body, and the outer surface of the small outer tube body.

[0024] The effect achieved by the above-mentioned components is that, by setting up a sealing ring, they can isolate air and prevent dust.

[0025] Compared with the prior art, the advantages of this utility model are as follows: It incorporates a main body for shock absorption; it connects a large outer tube assembly and a small outer tube assembly for shock absorption; it connects the large and small outer tube assemblies using a stopcock assembly; it provides a negative and positive air chamber for pneumatic shock absorption; and it includes a valve assembly and a valve chamber, which, during shock absorption, introduces air from the negative air chamber into the valve chamber and compresses the air in the positive air chamber. The use of a pneumatic method for shock absorption reduces the risk of damage from collisions between internal components, thus improving the durability and practicality of the main body of the shock absorption device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is the extension of the present utility model. Figure 1 A schematic diagram of the structural cross-section of section line AA;

[0028] Figure 3 This is an exploded view of the valve assembly of this utility model.

[0029] Reference numerals: 1. Main body of shock absorber; 11. Positive air chamber; 12. Negative air chamber; 13. Valve chamber; 14. Sealing ring; 15. Wear ring; 2. Large outer tube assembly; 21. Main body of large outer tube; 22. Large outer tube sleeve hole; 23. Large outer tube valve; 3. Small outer tube assembly; 31. Main body of small outer tube; 32. Small outer tube sleeve hole; 33. Small outer tube valve; 34. Air outlet; 4. Plug assembly; 41. Piston; 42. Lower plug; 5. Valve assembly; 51. Valve seat; 52. One-way valve screw; 53. Gasket; 54. Return air hole; 55. Air passage hole; 56. Placement slot. Detailed Implementation

[0030] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0031] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in addition to indicating orientation or positional relationship, the aforementioned terms may also be used to indicate other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in this utility model can be understood according to the specific circumstances.

[0033] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts. The connection methods described herein are existing technologies without any modifications and are common knowledge to those skilled in the art. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] like Figures 1 to 3As shown, this utility model provides a shock absorption device, including a shock absorption device body 1. The shock absorption device body 1 includes a large outer tube assembly 2, a small outer tube assembly 3, and a stopcock assembly 4 disposed between the large outer tube assembly 2 and the small outer tube assembly 3. A positive air chamber 11 is formed between the large outer tube assembly 2 and the stopcock assembly 4, and a negative air chamber 12 is formed between the small outer tube assembly 3 and the stopcock assembly 4. A valve assembly 5 is disposed in the negative air chamber 12. The valve assembly 5 and the small outer tube assembly 3 form a valve chamber 13 in the negative air chamber 12. Valve chamber 13 and negative air chamber 12 are connected or isolated through valve assembly 5. When shock absorption is performed, small outer tube assembly 3 moves in a limited position towards positive air chamber 11 within large outer tube assembly 2, compressing the air in positive air chamber 11, and the air in negative air chamber 12 enters valve chamber 13 through valve assembly 5. When reset is performed, the air in positive air chamber 11 pushes the end of small outer tube assembly 3 away from positive air chamber 11 within large outer tube assembly 2 to reset, and the air in valve chamber 13 returns to valve chamber 13 through valve assembly 5. The shock absorber body 1 is designed for shock absorption; a large outer tube assembly 2 and a small outer tube assembly 3 are designed for connection and shock absorption; a valve assembly 4 is designed to connect the large outer tube assembly 2 and the small outer tube assembly 3; a negative air chamber 12 and a positive air chamber 11 are designed for pneumatic shock absorption; and a valve assembly 5 and a valve chamber 13 are designed to introduce air from the negative air chamber 12 into the valve chamber 13 to compress the air in the positive air chamber 11 for shock absorption. The use of a pneumatic method for shock absorption reduces the risk of damage from collisions between internal components, thus improving the durability and practicality of the shock absorber body 1.

[0036] The valve assembly 4 includes a piston 41 and a lower valve 42; the small outer tube assembly 3 is connected to the piston 41 via a threaded connection, and the large outer tube assembly 2 is connected to the lower valve 42 via a threaded connection; the large outer tube assembly 2 and the lower valve 42 are disposed on the outer periphery of the small outer tube assembly 3 and the piston 41. By providing the piston 41 for connection with the small outer tube assembly 3 and the lower valve 42 for connection with the large outer tube assembly 2, and by using a threaded connection, the connection is made more convenient; by placing the piston 41 and the small outer tube assembly 3 inside the large outer tube assembly 2 and the lower valve 42, a limiting and resisting function is provided during shock absorption operation.

[0037] The valve assembly 5 includes a valve seat 51, a one-way valve screw 52, ​​and at least one valve plate. The valve seat 51 is disposed inside the small outer tube assembly 3 and is in contact with the interior of the small outer tube assembly 3. The one-way valve screw 52 passes through the valve seat 51. The valve plate is disposed inside the negative pressure chamber 12 at the position where the valve seat 51 and the one-way valve screw 52 are connected. By setting the valve seat 51, the one-way valve screw 52 is limited in its placement; by setting the one-way valve screw 52, ​​the air can be unidirectionally passed through; by setting the valve plate, the one-way valve screw 52 is limited in its position after installation.

[0038] The valve seat 51 is provided with at least one return air hole 54; the valve plate is located above the air passage hole 55; the one-way valve screw 52 is provided with an air passage hole 55; one end of the air passage hole 55 is connected to the negative air chamber 12, and the other end is connected to the valve chamber 13; a sealing ring 14 is provided at the end of the air passage hole 55 connected to the valve chamber 13. By providing the air passage hole 55, air can enter the valve chamber 13 from the negative air chamber 12 through the air passage hole 55; by providing the return air hole 54, air in the valve chamber 13 can enter the negative air chamber 12 through the return air hole 54; by providing the sealing ring 14, air is prevented from entering the valve chamber 13 when vibration damping is not required; the air passage hole 55 is located below the valve plate to prevent air from flowing back directly from the return air hole 54 during vibration damping operation.

[0039] The valve seat 51 has a placement groove 56 on its outer periphery; a sealing ring 14 is disposed in the placement groove 56. By providing the placement groove 56 for placing the sealing ring 14, the sealing effect is improved.

[0040] The large outer tube assembly 2 includes a large outer tube body 21, a large outer tube sleeve hole 22, and a large outer tube valve 23; the large outer tube sleeve hole 22 is located outside the large outer tube body 21; the positive air chamber 11 is inlet or outlet of air through the large outer tube valve 23. The large outer tube body 21 is provided for connection with the lower stopcock 42, and the large outer tube sleeve hole 22 is generally provided for external connection; the large outer tube valve 23 is provided for replenishing or releasing air in the positive air chamber 11 according to the user's own usage needs.

[0041] The small outer tube assembly 3 includes a small outer tube body 31, a small outer tube sleeve hole 32, and a small outer tube valve 33; the small outer tube sleeve hole 32 is located outside the small outer tube body 31; the negative air chamber 12 is inlet or outlet of air through the small outer tube valve 33. The small outer tube body 31 is provided for connection with the piston 41, and the small outer tube sleeve hole 32 is generally provided for external connection; the small outer tube valve 33 is provided for replenishing or releasing air in the negative air chamber 12 according to the user's own usage needs.

[0042] A sealing ring 14 is provided inside the large outer tube body 21, and the sealing ring 14 is located at the end of the positive air chamber 11 away from the piston 41. By providing the sealing ring 14, it plays a role in resisting and preventing impact.

[0043] The small outer tube body 31 is provided with an air outlet 34 at one end of the valve chamber 13; a wear-resistant ring 15 is provided on the outside of the small outer tube body 31. By providing the air outlet 34, the air entering the valve chamber 13 can enter between the piston 41 and the lower rotary valve 42; by providing the wear-resistant ring 15, the noise is reduced.

[0044] The piston 41 and the large outer tube body 21, the lower plug 42 and the small outer tube body 31, and the small outer tube body 31 are all provided with sealing rings 14. By providing sealing rings 14, the air is isolated and dust is prevented.

[0045] In this embodiment, when the user is using the main body 1 of the shock absorber, the large outer tube sleeve hole 22 and the small outer tube sleeve hole 32 can be connected first. Then, the air volume in the positive air chamber 11 and the negative air chamber 12 can be adjusted through the large outer tube valve 23 and the small outer tube valve 33. When shock absorption is required, the small outer tube main body 31 and the piston 41 will move synchronously towards the positive air chamber 11. At this time, the air in the positive air chamber 11 will be compressed, and the air in the negative air chamber 12 will blow open the sealing ring 14 through the air passage hole 55 on the one-way valve screw 52 and enter the valve chamber 13. Then, it will enter between the piston 41 and the lower plug 42 through the air outlet hole 34. When reset is required, the air in the positive air chamber 11 will push the piston 41 and the small outer tube main body 31 outward. The air in the valve chamber 13 will blow open a gap in the gasket 53 through the return air hole 54 and then return to the negative air chamber 12.

[0046] The sealing ring 14 described in this utility model includes any one of O-ring sealing ring 14 and / or X-ring sealing ring 14, and different sealing rings 14 are used in different positions to ensure the sealing performance of the whole machine structure.

[0047] In the description of this specification, references are made to the terms "one embodiment", "some embodiments", "example", "specific example".

[0048] The descriptions using terms such as "example" or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the existing technology, and will not be described in detail here.

[0050] The above description is only a preferred embodiment of this utility model. For those skilled in the art, various modifications and variations can be made in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A shock-absorbing device, comprising a shock-absorbing device body, characterized in that: The main body of the shock absorption device includes a large outer tube assembly, a small outer tube assembly, and a stopcock assembly disposed between the large and small outer tube assemblies. A positive air chamber is formed between the large outer tube assembly and the stopcock assembly, and a negative air chamber is formed between the small outer tube assembly and the stopcock assembly. A valve assembly is disposed in the negative air chamber. The valve assembly and the small outer tube assembly form a valve chamber in the negative air chamber. The valve chamber and the negative air chamber are connected or isolated through the valve assembly. When shock absorption is performed, the small outer tube assembly moves towards the positive air chamber within the large outer tube assembly, compressing the air in the positive air chamber, and the air in the negative air chamber enters the valve chamber through the valve assembly. When resetting, the air in the positive air chamber pushes the end of the small outer tube assembly away from the positive air chamber within the large outer tube assembly to reset, and the air in the valve chamber returns to the valve chamber through the valve assembly.

2. The shock absorption device according to claim 1, characterized in that: The cock assembly includes a piston and a lower cock; the small outer tube assembly is connected to the piston via a threaded connection, and the large outer tube assembly is connected to the lower cock via a threaded connection; the large outer tube assembly and the lower cock are disposed on the outer periphery of the small outer tube assembly and the piston.

3. A shock-absorbing device according to claim 2, characterized in that: The valve assembly includes a valve seat, a one-way valve screw, and at least one valve plate; the valve seat is disposed inside the small outer tube assembly and is in contact with the interior of the small outer tube assembly; the one-way valve screw passes through the valve seat; the valve plate is disposed in the negative chamber at the position where the valve seat and the one-way valve screw are connected.

4. A shock-absorbing device according to claim 3, characterized in that: The valve seat is provided with at least one return air hole; the valve plate is provided at the upper end of the air passage hole; the one-way valve screw is provided with an air passage hole; one end of the air passage hole is connected to the negative air chamber and the other end is connected to the valve chamber; a sealing ring is provided at the end of the air passage hole connected to the valve chamber.

5. A shock-absorbing device according to claim 4, characterized in that: A placement groove is provided on the outer periphery of the valve seat; a sealing ring is provided in the placement groove.

6. A shock-absorbing device according to claim 5, characterized in that: The large outer tube assembly includes a large outer tube body, a large outer tube sleeve hole, and a large outer tube valve; the large outer tube sleeve hole is located outside the large outer tube body; the positive air chamber is inlet or outlet of air through the large outer tube valve.

7. A shock-absorbing device according to claim 6, characterized in that: The small outer tube assembly includes a small outer tube body, a small outer tube sleeve hole, and a small outer tube valve; the small outer tube sleeve hole is located outside the small outer tube body; the negative air chamber is inlet or outlet of air through the small outer tube valve.

8. A shock-absorbing device according to claim 7, characterized in that: A sealing ring is provided inside the main body of the large outer tube, and the sealing ring is located at the end of the positive air chamber away from the piston.

9. A shock-absorbing device according to claim 8, characterized in that: The small outer tube body is located at one end of the valve chamber and has an air outlet; a wear-resistant ring is provided on the outside of the small outer tube body.

10. A shock-absorbing device according to claim 9, characterized in that: The piston and the large outer tube body, the lower plug and the small outer tube body, and the small outer tube body are all provided with sealing rings.

Images