One-way adjustable high pressure nitrogen gas damper

Abstract

The utility model relates to high pressure nitrogen shock absorber technical field, concretely relates to one -way adjustable high pressure nitrogen shock absorber of damping, including shock absorber body, the tail end of shock absorber body and the one end of damping adjustment structure keep intercommunication, including bottom cylinder, outer tube and apron in the damping adjustment structure, combine into external structure, the inboard fixed of bottom cylinder has contact block, the front end fixed of contact block has top ring, the middle part fixed of outer tube has a circle contact ring, the contact ring is inserted and is provided with the rotating rod, the bottom of rotating rod is provided with positioning assembly, the bottom of rotating rod and the sleeve ring are connected with sleeve set, so the speed of the medium in the outside in the speed of entering contact block in the through -hole in top ring will slow down, owing to the viscosity of medium, the medium volume that can reduce in shock absorber body with existing structure, so play the one -way damping adjustment function, so the plug can enlarge / reduce the exposed number of through -hole when moving up / down, and then can enlarge / reduce the damping effect of shock absorber.

Description

Technical Field

[0001] This utility model relates to the technical field of high-pressure nitrogen shock absorbers, specifically to a unidirectional damping adjustable high-pressure nitrogen shock absorber. Background Technology

[0002] Shock absorbers are installed on motor vehicles to absorb the energy generated by vibrations during vehicle operation. High-pressure nitrogen shock absorbers are a relatively high-end type. Their structure mainly includes a reservoir and a working cylinder. A first piston connected to a piston rod is located inside the reservoir, and a second piston is located inside the working cylinder. High-pressure nitrogen is filled into the working cylinder. During damping, the piston rod moves the first piston, forcing damping oil from the reservoir into the working cylinder and compressing the second piston, thus reducing the vibration amplitude of the vehicle. Furthermore, the damping oil, when flowing to the smaller gaps in the oil holes, also heats up, further absorbing vibration energy.

[0003] The drawbacks of the above structure are: the damping force of this type of shock absorber is generally a fixed value after production and cannot be adjusted according to changes in road conditions. Moreover, the required damping force varies for different vehicle models, resulting in low flexibility and versatility in its use. In addition, some high-pressure nitrogen shock absorbers with adjustable damping have appeared on the market, but they often only have a single damping adjustment component, and the range of damping adjustment is relatively limited, making it difficult to meet users' needs for adjusting different damping values. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a unidirectional damping adjustable high-pressure nitrogen shock absorber, which can effectively solve the problems in the existing technology.

[0005] This utility model provides a unidirectional damping adjustable high-pressure nitrogen shock absorber, including a shock absorber body. The tail end of the shock absorber body is connected to one end of a damping adjustment structure. The damping adjustment structure includes a bottom cylinder, an outer cylinder, and a cover plate, which are combined to form an external structure. A contact block is fixed to the inner side of the bottom cylinder, and a top ring is fixed to the front end of the contact block. A contact ring is fixed to the middle of the outer cylinder. A rotating rod is inserted into the contact ring. A positioning component is provided at the bottom of the rotating rod. The bottom of the rotating rod is sleeved and connected to a sleeve ring. The bottom end of the sleeve ring is fixedly connected to a bottom rod. The bottom of the bottom rod is fixedly connected to a plug, and the outer side of the bottom rod is fixedly connected to a flow plate. Multiple sets of pressing posts are fixed to the bottom of the flow plate. The positioning component includes a positioning ring fixed to the inner wall of the outer cylinder, a spring cylinder fixed to the bottom end of the positioning ring, and a spring structure fixed inside the spring cylinder. The end of the pressing post is located inside the spring cylinder. Multiple sets of through holes are equidistantly opened on the outside of the top ring.

[0006] Furthermore, the rotating rod is a threaded rod structure, and the inner ring of the contact ring has a threaded groove structure that meshes with the threaded rod.

[0007] Furthermore, the positioning ring has multiple sets of circular grooves arranged in an equidistant array, and the positions of the circular grooves are opposite to the positions of the spring cylinder.

[0008] Furthermore, the inner diameter of the top ring is matched with the outer diameter of the plug, the length of the plug is greater than the length of the top ring, and a T-shaped groove is opened inside the top of the plug. The bottom of the bottom rod has a T-shaped structure, and the two are assembled and fixed together.

[0009] Furthermore, the outer diameter of the flow plate is smaller than the inner diameter of the outer cylinder, and multiple sets of holes and slots are formed in the middle of the flow plate.

[0010] This invention utilizes a damping adjustment structure. Users can rotate the external rotating rod structure to move the bottom sleeve ring-bottom rod-flow plate and plug structure downwards. Since the sleeve ring and rotating rod are fixed together, and the bottom rod and plug are also sleeved together, the rotation of the external rotating rod does not affect the forward and backward movement of the bottom structure. During movement, the pressure post structure at the bottom of the flow plate presses against the spring structure inside the spring cylinder, and through the threaded self-locking function, the rotating rod and plug can be fixed in a designated position. Because the plug is fixed in the middle of the top ring, the speed at which the external medium enters the contact block through the through-hole in the top ring slows down. Due to the viscosity of the medium, the volume of medium entering the shock absorber body per unit time is reduced compared to existing structures, thus achieving a unidirectional damping adjustment function. Therefore, when the plug moves up / down, the number of exposed through-holes can be increased / decreased, thereby increasing / decreased the damping effect of the shock absorber.

[0011] In this case, the combined docking structure of the flow plate and positioning ring ensures excellent stability of the entire structure during operation. The internal plug structure can contact the inner diameter of the top ring, which also reduces the occurrence of media leakage. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the damping adjustment structure in this utility model; Figure 3 This is one of the cross-sectional views of the damping adjustment structure in this utility model; Figure 4 This is the second cross-sectional view of the damping adjustment structure in this utility model.

[0014] The labels in the diagram represent: 1. Shock absorber body; 2. Damping adjustment structure; 21. Bottom cylinder; 22. Outer cylinder; 23. Cover plate; 24. Rotating rod; 241. Sleeve ring; 242. Bottom rod; 243. Flow plate; 244. Plug; 245. Press-fit column; 25. Contact block; 251. Top ring; 26. Positioning assembly; 261. Positioning ring; 262. Spring cylinder; 263. Circular groove; 27. Contact ring. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0016] The present invention will be further described below with reference to the embodiments.

[0017] Example: One-way damping adjustable high-pressure nitrogen shock absorber, see attached diagram. Figure 1 -Appendix Figure 4 The device includes a shock absorber body 1, the tail end of which is connected to one end of a damping adjustment structure 2. The damping adjustment structure 2 includes a bottom cylinder 21, an outer cylinder 22, and a cover plate 23, forming an external structure. A contact block 25 is fixed to the inner side of the bottom cylinder 21, and a top ring 251 is fixed to the front end of the contact block 25. A contact ring 27 is fixed to the middle of the outer cylinder 22, and a rotating rod 24 is inserted into the contact ring 27. A positioning component 26 is provided at the bottom of the rotating rod 24, and the bottom of the rotating rod 24 is sleeved with a fitting ring 241. The bottom end of 1 is fixedly connected to the bottom rod 242, the bottom of the bottom rod 242 is fixedly connected to the plug 244, and the outer side of the bottom rod 242 is fixedly connected to the flow plate 243. The bottom of the flow plate 243 is fixed with multiple sets of pressing posts 245. The positioning assembly 26 includes a positioning ring 261 fixed on the inner side wall of the outer cylinder 22, a spring cylinder 262 fixed at the bottom end of the positioning ring 261, and a spring structure fixed in the spring cylinder 262. The end of the pressing post 245 is located in the spring cylinder 262. Multiple sets of through holes are equidistantly opened on the outside of the top ring 251. The rotating rod 24 is a threaded rod structure, and the inner ring of the contact ring 27 has a threaded groove structure that meshes with the threaded rod; the positioning ring 261 has multiple sets of circular grooves 263 arranged in an equidistant array, and the position of the circular grooves 263 is opposite to the position of the spring cylinder 262; through the combined docking structure of the flow plate 243 and the positioning ring 261, the stability of the entire structure is excellent during operation, and the internal plug 244 structure can contact the inner diameter of the top ring 251, which can also reduce the occurrence of medium leakage.

[0018] The inner diameter of the top ring 251 is adapted to the outer diameter of the plug 244. The length of the plug 244 is greater than the length of the top ring 251, and a T-shaped groove is opened inside the top of the plug 244. The bottom of the bottom rod 242 has a T-shaped structure. The two are connected and fixed together. The plug 244 can be a spliced ​​structure. The outer diameter of the flow plate 243 is smaller than the inner diameter of the outer cylinder 22, and multiple sets of holes and slots are opened in the middle of the flow plate 243. Through the damping adjustment structure 2, the user can rotate the external rotating rod 24 structure to drive the bottom sleeve ring 241-bottom rod 242-flow plate 243 and plug 244 structure to the bottom. Since the sleeve ring 241 and the rotating rod 24 are sleeved and fixed, and the bottom rod 242 and the plug 244 are sleeved, the external... When the rotating rod 24 rotates, it does not affect the forward and backward movement of the bottom structure. Therefore, when moving, the pressing column 245 structure set at the bottom of the flow plate 243 can press the spring structure in the spring cylinder 262, and through the thread self-locking function, the rotating rod 24 and the plug 244 can be fixed in the designated position. Since the plug 244 is fixed in the middle of the top ring 251, the speed at which the external medium enters the contact block 25 through the through hole in the top ring 251 will be slower. Due to the viscosity of the medium, the volume of medium entering the damper body 1 can be reduced per unit time compared with the existing structure, so it plays a one-way damping adjustment function. Therefore, when the plug 244 moves up / down, it can expand / contract the number of exposed through holes, thereby expanding / contracting the damping effect of the damper.

[0019] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A one-way damped adjustable high pressure nitrogen gas shock absorber characterized by, The device includes a shock absorber body (1), the tail end of which is connected to one end of a damping adjustment structure (2). The damping adjustment structure (2) includes a bottom cylinder (21), an outer cylinder (22), and a cover plate (23), which are combined to form an external structure. A contact block (25) is fixed inside the bottom cylinder (21), and a top ring (251) is fixed at the front end of the contact block (25). A contact ring (27) is fixed in the middle of the outer cylinder (22). A rotating rod (24) is inserted into the contact ring (27). A positioning component (26) is provided at the bottom of the rotating rod (24). The bottom of the rotating rod (24) is sleeved and connected to a sleeve ring (241). The bottom end of (241) is fixedly connected to the bottom rod (242), the bottom of the bottom rod (242) is fixedly connected to the plug (244), and the outer side of the bottom rod (242) is fixedly connected to the flow plate (243). The bottom of the flow plate (243) is fixed with multiple sets of pressing columns (245). The positioning assembly (26) includes a positioning ring (261) fixed on the inner side wall of the outer cylinder (22), a spring cylinder (262) fixed at the bottom end of the positioning ring (261), and a spring structure fixed in the spring cylinder (262). The end of the pressing column (245) is set in the spring cylinder (262). Multiple sets of through holes are equidistantly opened on the outside of the top ring (251).

2. The one-way adjustable high pressure nitrogen gas shock absorber of claim 1, wherein, The rotating rod (24) is a threaded rod structure, and the inner ring of the contact ring (27) has a threaded groove structure that meshes with the threaded rod.

3. The one-way adjustable high pressure nitrogen gas shock absorber of claim 1, wherein, The positioning ring (261) has multiple sets of circular grooves (263) arranged in an equidistant array, and the position of the circular grooves (263) is opposite to the position of the spring cylinder (262).

4. The one-way adjustable high pressure nitrogen gas shock absorber of claim 1, wherein, The inner diameter of the top ring (251) is matched with the outer diameter of the plug (244). The length of the plug (244) is greater than the length of the top ring (251), and a T-shaped groove is provided inside the top of the plug (244). The bottom of the bottom rod (242) is a T-shaped structure. The two are assembled and fixed together. The plug (244) can be a spliced ​​structure.

5. The one-way adjustable high pressure nitrogen gas shock absorber of claim 1, wherein, The outer diameter of the flow plate (243) is smaller than the inner diameter of the outer cylinder (22), and multiple sets of holes and grooves are opened in the middle of the flow plate (243).

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