Gas spring
Through structural design of the housing, sealing guide sleeve, piston, and drive rod, the problem of disassembly required for gas spring stroke adjustment has been solved, achieving flexible adjustment and high efficiency adaptability, and avoiding disassembly operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO TANGNAN INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-12
AI Technical Summary
Existing gas springs require disassembly when the stroke needs to be changed, resulting in low disassembly efficiency and poor adaptability.
The design incorporates a housing, a sealed guide sleeve, a piston, a moving rod, and a drive rod. The piston's movement distance can be adjusted through the cooperation of an adjusting block and a locking component, thus avoiding the need to disassemble the gas spring.
It enables flexible adjustment of the gas spring stroke, improves adaptability, avoids the disassembly process, and enhances operational efficiency.
Smart Images
Figure CN224229151U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of gas spring technology, and in particular to a gas spring. Background Technology
[0002] A gas spring is an industrial accessory that provides support, cushioning, braking, height adjustment, and angle adjustment. It consists of several parts: a pressure cylinder, piston rod, piston, sealing guide sleeve, filling material (inert gas or an oil-gas mixture), internal and external control elements (for controllable gas springs), and connectors. The principle is to fill the sealed pressure cylinder with inert gas or an oil-gas mixture, making the pressure inside the cavity several times or tens of times higher than atmospheric pressure. The piston rod's movement is achieved by utilizing the pressure difference created by the smaller cross-sectional area of the piston rod compared to the piston's cross-sectional area. Currently, the stroke distance of a gas spring is mainly determined by the length of the pressure cylinder. During installation and use, changing the stroke requires disassembling both ends of the gas spring. Since the gas spring may be located inside the equipment, disassembly efficiency is low, resulting in poor adaptability. Utility Model Content
[0003] The purpose of this invention is to provide a gas spring that addresses the shortcomings and deficiencies of existing technologies.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] The device includes a housing, a sealing guide sleeve, a piston, and a moving rod. The sealing guide sleeve is fitted and fixed to the open end of the housing. The piston slides inside the housing. One end of the moving rod is inserted and fixed inside the piston, and the other end of the moving rod is inserted and slides inside the side wall of the sealing guide sleeve. A driving rod is inserted and slides inside the side wall of the sealing guide sleeve. An adjusting block slides inside the housing. The adjusting block is located on the side of the piston closer to the sealing guide sleeve, and one end of the driving rod is located on one side of the adjusting block.
[0006] Preferably, the drive rod has a balance frame at one end near the piston, and the balance frame is mounted on the side wall of the adjusting block.
[0007] Preferably, the drive rod is composed of multiple rotating rods arranged in a row, and adjacent rotating rods are rotatably connected.
[0008] Preferably, the outer wall of the housing is provided with a storage bag, which can be used to store the rotating rod.
[0009] Preferably, a connecting plate is provided between two adjacent rotating rods, and a connecting rod is provided on the same side of both ends of the connecting plate. The two connecting rods are respectively inserted into the side walls of the two adjacent rotating rods. A plug-in block is provided at both ends of the connecting plate, and a plug-in groove is provided on the side wall of the rotating rod for the plug-in block to be inserted and fixed.
[0010] Preferably, the connecting rod has a limiting block at the end away from the connecting plate. When the limiting block is in contact with the side wall of the rotating rod, the insertion block disengages from the insertion slot.
[0011] Preferably, the outer end of the sealing guide sleeve is provided with a locking member, which includes a locking plate and a toggle bar. The toggle bar moves back and forth within the outer end of the sealing guide sleeve. The locking plate is disposed at one end of the toggle bar, and one end of the locking plate can be inserted between two adjacent rotating rods.
[0012] In summary, this application includes at least one of the following beneficial technical effects:
[0013] 1. When the stroke of the gas spring needs to be adjusted, first insert the connecting rods at both ends of the connecting plate into the side wall of one end of two adjacent rotating rods respectively. Then, insert and fix the plug block in the plug slot so that multiple rotating rods are arranged in a straight line. Then, push the drive rod to drive the adjusting block to slide in the housing, thereby changing the distance between the adjusting block and the sealing guide sleeve. Then, move the toggle bar to insert one end of the locking plate between two adjacent rotating rods, thereby locking and fixing the drive rod. After that, when the piston moves in the housing, the movement distance of the piston can be changed under the restriction of the adjusting block, thereby changing the stroke distance of the gas spring to meet the external requirements. After that, there is no need to disassemble the gas spring, which improves the adaptability of the gas spring.
[0014] 2. After the drive rod pushes the piston, when the outer end of the drive rod is outside the sealing guide sleeve, the connecting plate located outside the sealing guide sleeve is moved, so that the plug block is disengaged from the plug slot, allowing the two adjacent rotating rods to rotate. Then, the outer end of the drive rod is placed in the storage bag, thereby preventing the outer end of the drive rod from affecting the gas spring. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the gas spring of this utility model;
[0016] Figure 2 This is a cross-sectional schematic diagram of the gas spring of this utility model;
[0017] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4This is a cross-sectional schematic diagram of multiple rotating rods of this utility model;
[0019] Figure 5 This is an exploded schematic diagram of the multiple rotating rods of this utility model.
[0020] In the diagram: 1. Housing; 2. Sealing guide sleeve; 3. Piston; 4. Moving rod; 5. Adjusting block; 6. Balance frame; 7. Drive rod; 8. Rotating rod; 9. Embedding groove; 10. Connecting plate; 11. Insertion block; 12. Insertion groove; 13. Connecting rod; 14. Limiting block; 15. Placement groove; 16. Locking element; 17. Locking plate; 18. Actuating strip; 19. Limiting seat; 20. Storage bag. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] This application discloses a gas spring.
[0023] Reference Figure 1 and Figure 2 It includes a housing 1, a sealing guide sleeve 2, a piston 3 and a moving rod 4. The sealing guide sleeve 2 is threaded and fixed to the open end of the housing 1. The piston 3 slides inside the housing 1. The circumferential side of the piston 3 is sealed and fitted to the inner circumferential side of the housing 1. One end of the moving rod 4 is inserted and fixed inside the piston 3, and the other end of the moving rod 4 is inserted and slid inside the side wall of the sealing guide sleeve 2.
[0024] An adjusting block 5 slides along the length direction inside the housing 1. The adjusting block 5 is sleeved around the periphery of the moving rod 4. A balance frame 6 is fixed to the end of the adjusting block 5 near the sealing guide sleeve 2 by bolts. A drive rod 7 is integrally provided on the outer side of the balance frame 6. A through hole is opened on the side wall of the sealing guide sleeve 2. The outer end of the drive rod 7 passes through the through hole and is located on the outer side of the sealing guide sleeve 2.
[0025] Reference Figure 4 and Figure 5 The drive rod 7 consists of multiple rotating rods 8 arranged in an array. Each rotating rod 8 has an outer slot 9 at both ends, and a connecting plate 10 is placed within each corresponding slot 9. Each end of the connecting plate 10 has an integrally formed insertion block 11. The rotating rod 8 has an insertion slot 12 on the side wall of the slot 9, and the insertion block 11 is inserted and fixed within the insertion slot 12. Connecting rods 13 are integrally fixed on the inner sides of both ends of the connecting plate 10, and the connecting rods 13 slide and insert into the side wall of the slot 9 of the rotating rod 8. A limiting block 14 is fixed to the other end of the connecting rod 13. A placement slot 15 for placing the limiting block 14 is formed on the side of the rotating rod 8 away from the slot 9. When two adjacent rotating rods 8 are in a straight line, both ends of the connecting plate 10 are embedded into the two slots 9, and the insertion block 11 is engaged in the insertion slot 12, thus ensuring that the two rotating rods 8 remain in a straight line.
[0026] Reference Figure 3 A locking element 16 is placed on the outside of the sealing guide sleeve 2. The locking element 16 includes a locking plate 17, a toggle bar 18 and a limiting seat 19. The limiting seat 19 is integrally set on the outer wall of the sealing guide sleeve 2. The toggle bar 18 slides in the limiting seat 19. The locking plate 17 is fixed to the end of the toggle bar 18 near the drive rod 7 by bolts. The outer end of the locking plate 17 can be inserted between two adjacent rotating rods 8.
[0027] Reference Figure 1 and Figure 2 A storage bag 20 is fixed to the outer wall of the housing 1, which can be used to store the rotating rod 8. When the outer end of the drive rod 7 is outside the sealing guide sleeve 2, the connecting plate 10 located outside the sealing guide sleeve 2 is moved, so that the insertion block 11 is disengaged from the insertion groove 12, allowing the two adjacent rotating rods 8 to rotate. Then, the outer end of the drive rod 7 is placed in the storage bag 20, thereby preventing the outer end of the drive rod 7 from affecting the gas spring.
[0028] The implementation principle of a gas spring disclosed in this application is as follows:
[0029] The connecting rods 13 at both ends of the connecting plate 10 are inserted into the side wall of one end of two adjacent rotating rods 8 respectively. Then, the insertion block 11 is inserted and fixed in the insertion slot 12, so that multiple rotating rods 8 are arranged in the same straight line. Then, the drive rod 7 is pushed to drive the adjusting block 5 to slide in the housing 1, thereby changing the distance between the adjusting block 5 and the sealing guide sleeve 2. Then, the toggle bar 18 is moved to insert one end of the locking plate 17 between two adjacent rotating rods 8, thereby locking and fixing the drive rod 7. After that, when the piston 3 moves in the housing 1, the movement distance of the piston 3 can be changed under the restriction of the adjusting block 5, and then the stroke distance of the gas spring is changed.
[0030] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A gas spring, comprising a housing (1), a sealing guide sleeve (2), a piston (3), and a moving rod (4), wherein the sealing guide sleeve (2) is sleeved and fixed to the open end of the housing (1), the piston (3) slides within the housing (1), one end of the moving rod (4) is inserted and fixed within the piston (3), and the other end of the moving rod (4) is inserted and slides within the side wall of the sealing guide sleeve (2), characterized in that: A drive rod (7) is inserted and slidably moved inside the side wall of the sealing guide sleeve (2), and an adjustment block (5) is slidably moved inside the housing (1). The adjustment block (5) is located on the side of the piston (3) close to the sealing guide sleeve (2), and one end of the drive rod (7) is located on one side of the adjustment block (5).
2. A gas spring according to claim 1, characterized in that, The drive rod (7) has a balance frame (6) at one end near the piston (3), and the balance frame (6) is mounted on the side wall of the adjustment block (5).
3. A gas spring according to claim 1, characterized in that, The drive rod (7) is composed of multiple rotating rods (8), which are arranged in a row and are rotatably connected to each other.
4. A gas spring according to claim 3, characterized in that, The outer wall of the housing (1) is provided with a storage bag (20), which can be used to store the rotating rod (8).
5. A gas spring according to claim 3, characterized in that, A connecting plate (10) is provided between two adjacent rotating rods (8). A connecting rod (13) is provided on the same side of both ends of the connecting plate (10). The two connecting rods (13) are respectively inserted into the side walls of the two adjacent rotating rods (8). A plug-in block (11) is provided at both ends of the connecting plate (10). A plug-in groove (12) is provided on the side wall of the rotating rod (8) for the plug-in block (11) to be inserted and fixed.
6. A gas spring according to claim 5, characterized in that, The connecting rod (13) has a limiting block (14) at one end away from the connecting plate (10). When the limiting block (14) is in contact with the side wall of the rotating rod (8), the plug block (11) disengages from the plug groove (12).
7. A gas spring according to claim 3, characterized in that... The outer end of the sealing guide sleeve (2) is provided with a locking member (16). The locking member (16) includes a locking plate (17) and a toggle bar (18). The toggle bar (18) moves back and forth inside the outer end of the sealing guide sleeve (2). The locking plate (17) is located at one end of the toggle bar (18). One end of the locking plate (17) can be inserted between two adjacent rotating rods (8).