Stable gas spring

Abstract

The utility model relates to the technical field of gas springs, in particular to a stable gas spring which comprises a cylinder barrel and a piston rod, the piston rod slides on the inner wall of the cylinder barrel, a stabilizing device is arranged on the surface of the cylinder barrel and comprises an installation ring, and the inner wall of the installation ring is connected with a guide rod in a sliding mode. A protective barrel is fixedly connected to one end of the guide rod, the protective barrel slides on the surface of the cylinder barrel, a cleaning ring is fixedly connected to the surface of the protective barrel, and a positioning device is arranged at the ends, away from each other, of the piston rod and the cylinder barrel and comprises a first connecting block; the end, away from the piston rod, of the cylinder barrel is fixedly connected with a first connecting block. According to the technical scheme, equipment is effectively cleaned and protected, dust is prevented from being attached to the equipment, the situation that the equipment is stuck and abraded is reduced, meanwhile, when the equipment breaks down, the impact force of the piston rod on the cylinder barrel can be reduced, the stability of the equipment is ensured, and normal use of the equipment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of gas springs, in particular to a stable gas spring. Background Art

[0002] A gas spring is an elastic element with gas as the working medium. It usually consists of a cylinder barrel, a piston, a piston rod, seals, etc. The working principle of the gas spring is to fill high-pressure gas into the cylinder barrel and utilize the compressibility of the gas to achieve functions such as support, buffering, and height adjustment. In terms of applications, gas springs are widely used in fields such as automobiles, furniture, and medical devices.

[0003] The prior art such as the utility model with the publication number CN204985489U discloses a gas spring, which includes a cylinder body, a piston, and a piston rod. The piston is slidably connected to the inner cavity of the cylinder body. One end of the piston rod is fixedly connected to the piston, and the other end extends out of the cylinder body. It also includes a first oil seal, a second oil seal, and a bushing. The first oil seal and the second oil seal are located in the inner cavity of the cylinder body. The bushing is located between the first oil seal and the second oil seal, and fixing protrusions are provided on the side surface of the bushing, and the fixing protrusions are clamped with the first oil seal. It also includes a guide sleeve, the guide sleeve is located in the inner cavity of the cylinder body, and one end of the cylinder body is provided with a wrap-around edge. One end of the guide sleeve is limited by the wrap-around edge, and the other end abuts against the first oil seal. This utility model avoids oil leakage, and the oil seal will not deform, and the use effect is good.

[0004] At present, in the use of most gas springs, dust is easily attached to the surface of the piston. The dust is easily accumulated in the sliding area of the piston rod as the piston rod runs, increasing the wear of the piston rod, causing the piston rod to slide stuck. At the same time, when the equipment fails and the piston rod slides rapidly, the cylinder body is easily damaged by impact, which is not conducive to the normal use of the equipment. Therefore, improvements are needed. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defects in the prior art that in the use of most gas springs, dust is easily attached to the surface of the piston, the dust is easily accumulated in the sliding area of the piston rod as the piston rod runs, increasing the wear of the piston rod, causing the piston rod to slide stuck. At the same time, when the equipment fails and the piston rod slides rapidly, the cylinder body is easily damaged by impact, which is not conducive to the normal use of the equipment, and a stable gas spring is proposed.

[0006] To achieve the above object, the utility model adopts the following technical solution: A stable gas spring, including a cylinder barrel and a piston rod, the piston rod slides on the inner wall of the cylinder barrel, a stabilizing device is arranged on the surface of the cylinder barrel, the stabilizing device includes a mounting ring, a guiding rod is slidably connected to the inner wall of the mounting ring, one end of the guiding rod is fixedly connected with a protective cylinder, the protective cylinder slides on the surface of the cylinder barrel, a cleaning ring is fixedly connected to the surface of the protective cylinder, positioning devices are arranged at the ends of the piston rod and the cylinder barrel away from each other, the positioning device includes a first connecting block, the first connecting block is fixedly connected to the end of the cylinder barrel away from the piston rod, the second connecting block is fixedly connected to the end of the piston rod away from the cylinder barrel, mounting blocks are fixedly connected to the sides of the first connecting block and the second connecting block away from each other, mounting holes are formed on the surfaces of the two mounting blocks, a pressing ring is fixedly connected to the side of the second connecting block close to the piston rod. This solution effectively conducts cleaning and protection operations on the equipment, avoids dust adhering to the equipment, reduces the occurrence of jamming and wear of the equipment, and at the same time, when the equipment fails, reduces the impact force of the piston rod on the cylinder barrel, ensures the stability of the equipment, and facilitates the normal use of the equipment.

[0007] Preferably, a compression spring is sleeved on the guiding rod, and two ends of the compression spring are respectively fixedly connected to the surfaces of the protective cylinder and the mounting ring.

[0008] Preferably, a convex block is fixedly connected to the end of the guiding rod away from the protective cylinder to limit the displacement of the guiding rod.

[0009] Preferably, the number of the guiding rods and the compression springs is four each, and the four guiding rods and compression springs are arranged in a circumferential array. When the piston rod is displaced, the cleaning ring scrapes the dust on the surface of the piston rod, and the dust slides down along the chamfer on the cleaning ring. When the equipment fails and contracts rapidly, the pressing ring impacts the protective cylinder, the cleaning ring inserts into the receiving groove, the protective cylinder squeezes the compression spring, and then the staff can repair the equipment.

[0010] Preferably, the end of the cleaning ring away from the protective cylinder is chamfered to facilitate scraping the dust on the piston rod.

[0011] Preferably, a receiving groove is formed between the pressing ring and the piston rod. Before the equipment works, the connecting rod is inserted into the mounting tube, and then the installation of the equipment can be completed. When the equipment is operating, gas is introduced into the cylinder barrel to control the expansion and contraction of the piston rod. During this process, the connecting rod inserted into the mounting tube is pushed or pulled, and the bearing assists the mounting block to rotate to ensure the stable connection between the connecting rod and the equipment.

[0012] Preferably, a bearing is installed in the mounting hole, and a mounting tube is installed inside the bearing to facilitate the installation of the equipment.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0014] In the present utility model, before the device works, the connecting rod is inserted into the installation pipe, and then the installation of the device can be completed. When the device is operating, gas is introduced into the cylinder barrel to control the telescopic movement of the piston rod. During this process, the connecting rod inserted into the installation pipe is pushed or pulled, and the bearing assists the installation block to rotate to ensure the stable connection between the connecting rod and the device. When the piston rod is displaced, the cleaning ring scrapes off the dust on the surface of the piston rod, and the dust slides down along the chamfer on the cleaning ring. When a fault occurs in the device and there is a rapid contraction, the pressure ring impacts the protection cylinder, and the cleaning ring is inserted into the storage groove. The protection cylinder squeezes the compression spring, and then the staff can repair the device. This solution effectively performs cleaning and protection operations on the device, avoids dust adhering to the device, reduces the occurrence of jamming and wear of the device, and at the same time, when a fault occurs in the device, it can reduce the impact force of the piston rod on the cylinder barrel, ensure the stability of the device, and facilitate the normal use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of a stable gas spring proposed by the present utility model;

[0016] Figure 2 is in a stable gas spring proposed by the present utility model Figure 1 Schematic diagram of the structure at position A;

[0017] Figure 3 is an exploded structural schematic diagram of a stable gas spring proposed by the present utility model;

[0018] Figure 4 is in a stable gas spring proposed by the present utility model Figure 3 Schematic diagram of the structure at position B;

[0019] Figure 5 is in a stable gas spring proposed by the present utility model Figure 3 Schematic diagram of the structure at position C.

[0020] LEGEND DESCRIPTION:

[0021] 1. Cylinder barrel; 2. Piston rod; 3. Stabilizing device; 31. Mounting ring; 32. Protection cylinder; 33. Guide rod; 34. Convex block; 35. Compression spring; 36. Cleaning ring; 37. Pressure ring; 38. Storage groove; 4. Positioning device; 41. First connecting block; 42. Second connecting block; 43. Mounting block; 44. Mounting hole; 45. Bearing; 46. Installation pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Please refer to Figures 1 - 5, the present utility model provides a technical solution: a stable gas spring, which includes a cylinder 1 and a piston rod 2. The piston rod 2 slides on the inner wall of the cylinder 1. A stabilizing device 3 is provided on the surface of the cylinder 1. The stabilizing device 3 includes a mounting ring 31. A guiding rod 33 is slidably connected to the inner wall of the mounting ring 31. One end of the guiding rod 33 is fixedly connected to a protective cylinder 32. The protective cylinder 32 slides on the surface of the cylinder 1. A cleaning ring 36 is fixedly connected to the surface of the protective cylinder 32. Positioning devices 4 are provided at the ends of the piston rod 2 and the cylinder 1 that are far away from each other. The positioning device 4 includes a first connecting block 41. The first connecting block 41 is fixedly connected to the end of the cylinder 1 that is far away from the piston rod 2. The second connecting block 42 is fixedly connected to the end of the piston rod 2 that is far away from the cylinder 1. Mounting blocks 43 are fixedly connected to the sides of the first connecting block 41 and the second connecting block 42 that are far away from each other. Mounting holes 44 are provided on the surfaces of the two mounting blocks 43. A pressing ring 37 is fixedly connected to the side of the second connecting block 42 that is close to the piston rod 2. This solution effectively performs cleaning and protection operations on the equipment, avoids dust adhering to the equipment, reduces the occurrence of jamming and wear of the equipment. At the same time, when the equipment fails, it can reduce the impact force of the piston rod 2 on the cylinder 1, ensure the stability of the equipment, and facilitate the normal use of the equipment.

[0023] Specifically, a compression spring 35 is sleeved on the guiding rod 33. The two ends of the compression spring 35 are respectively fixedly connected to the surfaces of the protective cylinder 32 and the mounting ring 31.

[0024] Specifically, a convex block 34 is fixedly connected to the end of the guiding rod 33 that is far away from the protective cylinder 32 to limit the displacement of the guiding rod 33.

[0025] In this embodiment: the number of guiding rods 33 and compression springs 35 is four each. The four guiding rods 33 and compression springs 35 are arranged in a circumferential array. When the piston rod 2 is displaced, the cleaning ring 36 scrapes off the dust on the surface of the piston rod 2, and the dust slides down along the chamfer on the cleaning ring 36. When the equipment fails and undergoes rapid contraction, the pressing ring 37 impacts the protective cylinder 32, the cleaning ring 36 is inserted into the receiving groove 38, and the protective cylinder 32 squeezes the compression spring 35. Then the staff can repair the equipment.

[0026] Specifically, the end of the cleaning ring 36 that is far away from the protective cylinder 32 is chamfered to facilitate scraping off the dust on the piston rod 2.

[0027] In this embodiment: a receiving groove 38 is formed between the pressing ring 37 and the piston rod 2. Before the equipment works, the connecting rod is inserted into the installation tube 46, and then the installation of the equipment can be completed. When the equipment is operating, gas is introduced into the cylinder 1 to control the expansion and contraction of the piston rod 2. During this process, the connecting rod inserted into the installation tube 46 is pushed or pulled up, and the bearing 45 assists the mounting block 43 to rotate to ensure the stable connection between the connecting rod and the equipment.

[0028] Specifically, a bearing 45 is installed in the mounting hole 44, and a mounting pipe 46 is installed inside the bearing 45, which facilitates the installation of the device.

[0029] Working principle: Before the device works, the connecting rod is inserted into the mounting pipe 46, and then the installation of the device can be completed. When the device is operating, gas is introduced into the cylinder barrel 1 to control the telescopic movement of the piston rod 2. During this process, the connecting rod inserted into the mounting pipe 46 is pushed or pulled up. The bearing 45 assists the mounting block 43 to rotate to ensure the stable connection between the connecting rod and the device. When the piston rod 2 is displaced, the cleaning ring 36 scrapes off the dust on the surface of the piston rod 2, and the dust slides down along the chamfer on the cleaning ring 36. When the device fails and undergoes rapid contraction, the pressure ring 37 impacts the protective cylinder 32, and the cleaning ring 36 is inserted into the receiving groove 38. The protective cylinder 32 compresses the compression spring 35, and then the staff can repair the device. This solution effectively performs cleaning and protection operations on the device, prevents dust from adhering to the device, reduces the occurrence of jamming and wear of the device, and at the same time, when the device fails, it can reduce the impact force of the piston rod 2 on the cylinder barrel 1, ensuring the stability of the device and facilitating the normal use of the device.

Claims

1. A stable gas spring, comprising a cylinder barrel (1) and a piston rod (2), the piston rod (2) sliding with the inner wall of the cylinder barrel (1), characterized in that: A stabilizing device (3) is provided on the surface of the cylinder barrel (1). The stabilizing device (3) includes a mounting ring (31). A guiding rod (33) is slidably connected to the inner wall of the mounting ring (31). One end of the guiding rod (33) is fixedly connected to a protective cylinder (32). The protective cylinder (32) slides on the surface of the cylinder barrel (1). A cleaning ring (36) is fixedly connected to the surface of the protective cylinder (32). A positioning device (4) is provided at the ends of the piston rod (2) and the cylinder barrel (1) that are away from each other. The positioning device (4) includes a first connecting block (41). The first connecting block (41) is fixedly connected to the end of the cylinder barrel (1) away from the piston rod (2). A second connecting block (42) is fixedly connected to the end of the piston rod (2) away from the cylinder barrel (1). Mounting blocks (43) are fixedly connected to the sides of the first connecting block (41) and the second connecting block (42) that are away from each other. Mounting holes (44) are formed in the surfaces of the two mounting blocks (43). A pressing ring (37) is fixedly connected to the side of the second connecting block (42) close to the piston rod (2).

2. A stable gas spring according to claim 1, wherein: A compression spring (35) is sleeved on the guiding rod (33). The two ends of the compression spring (35) are respectively fixedly connected to the surfaces of the protective cylinder (32) and the mounting ring (31).

3. A stable gas spring according to claim 1, characterized in that: A convex block (34) is fixedly connected to the end of the guiding rod (33) away from the protective cylinder (32).

4. A stable gas spring according to claim 1, characterized in that: The number of the guiding rods (33) and the compression springs (35) is four each. The four guiding rods (33) and compression springs (35) are arranged in a circumferential array.

5. A stable gas spring according to claim 1, characterized in that: The end of the cleaning ring (36) away from the protective cylinder (32) is chamfered.

6. The stable gas spring according to claim 5, characterized in that: A receiving groove (38) is formed between the pressing ring (37) and the piston rod (2).

7. A stable gas spring according to claim 5, characterized in that: A bearing (45) is installed in the mounting hole (44), and a mounting pipe (46) is installed inside the bearing (45).

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