Large-stroke gas spring capable of being freely adjusted
By introducing a combination structure of a limiting ring plate, a connecting pin, and a return spring into the gas spring, the problems of fixed stroke and inconvenient adjustment of traditional gas springs are solved, achieving stable connection and leak prevention.
Patent Information
- Application Number
- CN202422168109.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-09-05
AI Technical Summary
Traditional gas springs have a fixed compression stroke, which makes them inconvenient to use when the installation position and angle are different. The limit ring is also difficult to adjust and the threads wear, affecting the stability of the connection.
A large-stroke freely adjustable gas spring was designed. By setting a combination structure of a limiting ring plate, a connecting plug, a return spring and an outer plug on the piston rod, the limiting ring plate can be easily adjusted on the piston rod, and a stable connection is achieved by compressing the spring to avoid leakage through the hole.
It enables convenient adjustment of the limiting ring plate on the piston rod, ensures connection stability, avoids leakage of inert gas or oil-gas mixture, and extends service life.
Smart Images
Figure CN223708383U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to gas spring technical field, concretely is a big stroke free adjustment gas spring. BACKGROUND
[0002] Gas spring, also known as support rod, gas support, angle adjuster, etc., is a kind of industrial accessories using gas compression and expansion principle to generate elastic force.Gas spring fills inert gas or oil-gas mixture in the closed pressure cylinder, so that the pressure in the cavity is several or several dozen times higher than atmospheric pressure.Because the cross-sectional area of the piston rod is smaller than that of the piston, a pressure difference is generated on both sides of the piston, and the movement of the piston rod is realized by using this pressure difference.Gas spring has multiple functions, including support, buffering, braking, height adjustment and angle adjustment, etc.Therefore, it has been widely used in many fields.
[0003] Common gas spring is usually composed of pressure cylinder, piston rod, piston, sealing guide sleeve, filler, control element and joint, etc.Gas spring fills inert gas or oil-gas mixture in the closed pressure cylinder, so that the pressure in the cavity is several or several dozen times higher than atmospheric pressure.Because the cross-sectional area of the piston rod is smaller than that of the piston, a pressure difference is generated on both sides of the piston, and the movement of the piston rod is realized by using this pressure difference.
[0004] In the use process of traditional gas spring, due to the fixed contraction stroke of the gas spring, different installation positions or different angles of the gas spring setting are required to select the appropriate contraction stroke of the gas spring for use according to the use conditions, which makes the use inconvenient.To solve the above problems, part of the gas spring first puts the rubber ring on the gas spring, puts the limiting ring on the inner rod of the gas spring, and adjusts the position of the limiting ring, which limits the contraction length of the inner rod of the gas spring by the contact of the limiting ring and the rubber ring when the gas spring contracts, adjusts the contraction stroke, and makes the use convenient.But this way, after adjusting the position of the limiting ring, rotating the threaded rod to push the square rod through the groove of the inner rod of the gas spring and inserting it into the connecting block, since the limiting ring needs to be adjusted according to the use condition, the threaded rod needs to be rotated many times before and after adjustment, which not only makes the position of the limiting ring inconvenient to adjust, but also accelerates the wear of the thread after rotating the threaded rod many times, which cannot guarantee the stability of the connection.Therefore, a big stroke free adjustment gas spring is proposed. UTILITY MODEL CONTENTS
[0005] In view of the deficiencies of the prior art, the utility model provides a big stroke free adjustment gas spring to solve the technical problem that the position of the limiting ring is not convenient to adjust, the threaded rod is rotated many times, the wear of the thread is accelerated, and the stability of the connection cannot be guaranteed.
[0006] To achieve the above object, the utility model provides the following technical scheme: a big stroke free adjustment air spring, including
[0007] The cylinder body and the outer link ring arranged at the outer end of the cylinder body are provided with abutting columns around the outer side of the outer link ring;
[0008] The piston rod is arranged at the outer end of the cylinder body, and a hollow cylinder is arranged in the center of the inner cavity of the piston rod, and an extrusion spring is arranged in the inner cavity of the hollow cylinder, both ends of the hollow cylinder are connected by being inserted with connecting columns, and are in close contact with the extrusion spring, and an outer plug column is arranged at the outer end of the connecting column;
[0009] The limit ring plate is arranged on the surface of the piston rod, and a top plate is connected to the top and bottom of the limit ring plate, and a connecting plug column is connected by being inserted in the center of the top plate, a reset spring is sleeved on the surface center of the connecting plug column, and a fixed circular plate is arranged on the surface center of the lower part of the connecting plug column and is in close contact with the reset spring. After adjusting the position of the limit ring plate on the piston rod according to the use condition, the connecting plug column is lowered along the top plate under the action of the reset spring, and the corresponding outer plug column is moved to the inside of the piston rod, so that the connecting plug column is connected to the inner cavity of the piston rod and extrudes the extrusion spring, and when the limit ring plate is separated from the piston rod, the outer plug column is reset under the action of the extrusion spring and is in close contact with the inner wall of the piston rod. On the one hand, the structure can facilitate the position adjustment of the limit ring plate on the piston rod, while ensuring the stability of the connection between the limit ring plate and the piston rod, so that the big stroke free adjustment operation can be performed; on the other hand, compared with the traditional hole connection mode, the piston rod not only facilitates the connection, but also avoids the leakage of inert gas or oil gas mixture during use.
[0010] Preferably, bolts are arranged around the outer side of the outer link ring, and the bolts are connected between the outer link ring and the cylinder body by threads.
[0011] Preferably, guide rods are connected by being inserted around the front surface of the outer link ring, and limit plates are arranged at the inner ends of the guide rods and are in close contact with the surface of the outer link ring. The guide rods can drive the limit plates to move along the outer link ring.
[0012] Preferably, a buffer spring is sleeved on the outer surface of the guide rod, and a circular connecting column is arranged on the front surface of the guide rod, the circular connecting column is connected with the abutting column, and a rubber protrusion is arranged on the front center of the abutting column. When the limit ring plate moves with the piston rod and is in close contact with the rubber protrusion, the rubber protrusion and the abutting column can move along the outer link ring through the circular connecting column and the guide rod, and extrude the buffer spring. Not only can the collision between the limit ring plate and the cylinder body be avoided, but also a certain buffer is provided, so as to avoid damage caused by collision and prolong the service life.
[0013] Preferably, the inner end of the piston rod is provided with a piston, and the outer side of the piston is connected with a sealing pad and closely contacts with the inner wall of the cylinder body.
[0014] Preferably, the top center of the top plate is provided with a rotating head and coaxially connected with a connecting column, and the top center of the top plate is provided with a limiting side groove, and the surface of the connecting column is provided with a limiting side plate and corresponds to the limiting side groove. The rotating head drives the connecting column to rotate on the top of the top plate, so that the limiting side plate is dislocated with the limiting side groove, and the limiting side plate closely contacts with the bottom of the top plate under the action of the reset spring, so that the stability of the connection is ensured.
[0015] Compared with the prior art, the utility model provides a big stroke free adjustment gas spring has the following beneficial effects:
[0016] The big stroke free adjustment gas spring, through according to the position of the limiting ring plate on the piston rod is adjusted after using condition, connecting column is under the action of reset spring along the top plate drops, and drives corresponding outer plug post to the inside movement of piston rod, so that connecting column enters the inner chamber of piston rod and is connected, and extrusion spring is extruded, and the structure can make the position of the limiting ring plate on the piston rod is adjusted, and the stability of the connection between the limiting ring plate and the piston rod is ensured, so that big stroke free adjustment operation can be carried out, when the limiting ring plate and the piston rod separate, the outer plug post resets under the action of extrusion spring, and closely contacts with the inner wall of the piston rod. Compared with the traditional hole connecting mode, the piston rod can not only be connected conveniently, but also avoid the leakage phenomenon of inert gas (such as nitrogen) or oil gas mixture due to the hole in the use process. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is overall structure schematic diagram of the utility model;
[0018] Figure 2 It is piston rod and connecting structure schematic diagram of the utility model;
[0019] Figure 3 It is piston rod part sectional view structure schematic diagram of the utility model;
[0020] Figure 4 It is top plate sectional view and connecting structure schematic diagram of the utility model;
[0021] Figure 5 It is outer connecting ring and connecting structure schematic diagram of the utility model.
[0022] In the diagram: 1. Cylinder body; 2. Outer connecting ring; 3. Bolt; 4. Guide rod; 5. Limiting plate; 6. Buffer spring; 7. Circular connecting column; 8. Clamping column; 9. Rubber protrusion; 10. Piston rod; 11. Piston; 12. Sealing gasket; 13. Hollow cylinder; 14. Compression spring; 15. Connecting column; 16. Outer plug column; 17. Limiting ring plate; 18. Top plate; 19. Connecting insert; 20. Rotating head; 21. Limiting side groove; 22. Limiting side plate; 23. Return spring; 24. Fixed circular plate. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] This utility model provides a technical solution: a large-stroke freely adjustable gas spring, comprising: (see details) Figure 1 The cylinder body 1, and the outer connecting ring 2 located at the outer end of the cylinder body 1, with a retaining post 8 installed around the outer periphery of the outer connecting ring 2;
[0025] Please see Figure 3 The piston rod 10 is located at the outer end of the cylinder body 1, and a hollow cylinder 13 is added to the center of the inner cavity of the piston rod 10. A compression spring 14 is added to the inner cavity of the hollow cylinder 13. Connecting posts 15 are inserted and connected to both ends of the hollow cylinder 13 and fit with the compression spring 14. An outer plug post 16 is installed at the outer end of the connecting post 15.
[0026] Please see Figure 4, the top and bottom of the limiting ring plate 17 are connected with the top plate 18, a connecting column 19 is inserted in the center of the top plate 18, a reset spring 23 is sleeved on the surface center of the connecting column 19, and a fixed circular plate 24 is installed on the surface center of the connecting column 19 and is in close contact with the reset spring 23. After adjusting the position of the limiting ring plate 17 on the piston rod 10 according to the use condition, the connecting column 19 is lowered along the top plate 18 under the action of the reset spring 23, and the corresponding outer plug column 16 is moved to the inside of the piston rod 10, so that the connecting column 19 enters the inner cavity of the piston rod 10 for connection and extrusion of the extrusion spring 14. When the limiting ring plate 17 is separated from the piston rod 10, the outer plug column 16 is reset under the action of the extrusion spring 14 and is in close contact with the inner wall of the piston rod 10. On the one hand, the structure can facilitate the position adjustment of the limiting ring plate 17 on the piston rod 10, while ensuring the stability of the connection between the limiting ring plate 17 and the piston rod 10, so that large-stroke free adjustment operation can be realized. On the other hand, compared with the traditional hole connection mode, the piston rod 10 can not only be connected conveniently, but also avoid the leakage of inert gas such as nitrogen or oil gas mixture due to the hole in the use process.
[0027] Please refer to Figure 5 , the outer side of the outer connecting ring 2 is provided with a bolt 3, and the bolt 3 is connected between the outer connecting ring 2 and the cylinder body 1 through threads. The outer connecting ring 2 is connected between the bolt 3 and the cylinder body 1. The front surface of the outer connecting ring 2 is provided with a guide rod 4, and the inner end of the guide rod 4 is provided with a limiting plate 5 and is in close contact with the surface of the outer connecting ring 2. The guide rod 4 can drive the limiting plate 5 to move along the outer connecting ring 2. The outer surface of the guide rod 4 is sleeved with a buffer spring 6, and the front surface of the guide rod 4 is provided with a circular connecting column 7, which is connected with a pressing column 8, and the front surface center of the pressing column 8 is provided with a rubber protrusion 9. When the limiting ring plate 17 moves with the piston rod 10 and is in close contact with the rubber protrusion 9, the rubber protrusion 9 and the pressing column 8 can move along the outer connecting ring 2 through the circular connecting column 7 and the guide rod 4, and extrude the buffer spring 6. Not only can the collision between the limiting ring plate 17 and the cylinder body 1 be avoided, but also a certain buffer is provided, so as to avoid damage caused by collision and prolong the service life.
[0028] Please refer to Figure 2 , the inner end of the piston rod 10 is provided with a piston 11, and the outer side of the piston 11 is connected with a sealing gasket 12 and is in close contact with the inner wall of the cylinder body 1. The piston rod 10 drives the piston 11 and the sealing gasket 12 to move in the inner cavity of the cylinder body 1.
[0029] Please refer to Figure 4The rotating head 20 rotates the connecting plug 19 on the top of the top plate 18, so that the limiting side plate 22 is dislocated from the limiting side groove 21, and the limiting side plate 22 is tightly attached to the bottom of the top plate 18 under the action of the reset spring 23, thereby ensuring the stability of the connection.
[0030] The scheme: after adjusting the position of the limiting ring plate 17 on the piston rod 10 according to the use condition, the connecting plug 19 is lowered along the top plate 18 under the action of the reset spring 23, and drives the corresponding outer plug column 16 to move to the inside of the piston rod 10, so that the connecting plug 19 enters the inner cavity of the piston rod 10 for connection, and the extrusion spring 14 is extruded, the rotating head 20 rotates the connecting plug 19 on the top of the top plate 18, so that the limiting side plate 22 is dislocated from the limiting side groove 21, and the limiting side plate 22 is tightly attached to the bottom of the top plate 18 under the action of the reset spring 23, when the limiting ring plate 17 is separated from the piston rod 10, the outer plug column 16 is reset under the action of the extrusion spring 14, and is tightly attached to the inner wall of the piston rod 10. The outer connecting ring 2 is connected between the cylinder body 1 through the bolt 3, the limiting ring plate 17 moves with the piston rod 10, and is attached to the rubber convex head 9, the rubber convex head 9 and the abutting column 8 can move along the outer connecting ring 2 through the round connecting column 7 and the guide rod 4, and extrude the buffer spring 6. The piston rod 10 drives the piston 11 and the sealing gasket 12 to move in the inner cavity of the cylinder body 1.
[0031] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0032] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A large-stroke free-adjustment gas spring, characterized in that, Include: The cylinder (1), and the outer ring (2) is arranged at the outer end of the cylinder (1), and the abutting column (8) is installed on the outer side of the outer ring (2); Piston rod (10), arranged at the outer end of the cylinder (1), and the hollow cylinder (13) is arranged in the inner cavity of the piston rod (10), and the extrusion spring (14) is arranged in the inner cavity of the hollow cylinder (13), the both ends of the hollow cylinder (13) are inserted and connected with the connecting column (15), and the connecting column (15) is combined with the extrusion spring (14), and the outer end of the connecting column (15) is installed with the outer plug column (16); Limit ring plate (17), arranged on the surface of the piston rod (10), and the top and bottom of the limit ring plate (17) are connected with the top plate (18), and the connecting plug column (19) is inserted and connected in the center of the top plate (18), the surface center of the connecting plug column (19) is sleeved with the reset spring (23), and the surface center of the connecting plug column (19) is installed with the fixed circular plate (24), and combined with the reset spring (23).
2. A large-stroke free-adjustment gas spring according to claim 1, characterized in that: The outer side of the outer ring (2) is installed with the bolt (3), and the bolt (3) is connected between the outer ring (2) and the cylinder (1) by screw thread.
3. A large-stroke free-adjustment gas spring according to claim 2, characterized in that: The front of the outer ring (2) is inserted and connected with the guide rod (4), and the inner end of the guide rod (4) is installed with the limit plate (5), and combined with the surface of the outer ring (2).
4. A large-stroke free-adjustment gas spring according to claim 3, characterized in that: The outer surface of the guide rod (4) is sleeved with the buffer spring (6), and the front of the guide rod (4) is installed with the round connecting column (7), the round connecting column (7) is connected with the abutting column (8), and the front center of the abutting column (8) is installed with the rubber boss (9).
5. A large-stroke free-adjustment gas spring according to claim 1, characterized in that: The inner end of the piston rod (10) is installed with the piston (11), and the outer side of the piston (11) is connected with the sealing gasket (12), and combined with the inner wall of the cylinder (1).
6. A large-stroke free-adjustment gas spring according to claim 1, characterized in that: The top center of the top plate (18) is provided with a rotating head (20), which is coaxially connected with the connecting plug column (19), and the top center of the top plate (18) is provided with a limiting side groove (21), the surface of the connecting plug column (19) is installed with a limiting side plate (22), and the limiting side groove (21) is corresponding.