Gas spring with high safety

Abstract

The utility model discloses a gas spring with high safety, which belongs to the technical field of gas springs and comprises a gas spring body, a piston rod is arranged at the top of the gas spring body, a protection mechanism is arranged on the surface of the gas spring body, and a rotating sleeve is arranged on the surface of the piston rod. The protection mechanism comprises a connecting sleeve, a telescopic sleeve, a fixing plate and a connecting plate, the bottom of the connecting sleeve extends to the surface of the gas spring body and is in threaded connection with the surface of the gas spring body, the top and the bottom of the telescopic sleeve are fixedly connected with the opposite sides of the connecting sleeve and the fixing plate correspondingly, and the bottom of the connecting plate is fixedly connected with the top of the fixing plate. The problems that in the process that most existing gas springs move through piston rods, when the piston rods stretch out and draw back in cylinder bodies, friction generated by the surfaces of the piston rods and the inner walls of sealing rings can reduce the sealing performance of the sealing rings, and therefore the service life of the gas springs is affected, and the use safety of the gas springs is affected are solved.

Description

Technical Field

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

[0002] Gas spring is an industrial accessory that can perform functions such as support, cushioning, braking, height adjustment and angle adjustment. It consists of the following main parts: pressure cylinder, piston rod, piston, sealing guide sleeve, filler, etc. Its basic principle is to fill a closed cylinder with gas or oil-gas mixture with a certain pressure, and realize its function by using the compressibility of gas through the movement of the piston rod in the cylinder.

[0003] A Chinese patent with announcement number CN205064687U discloses a piston of a gas spring, including a piston body, an annular sealing groove is provided on the outer periphery of the piston body, a radial air return groove is provided on the groove side of the annular sealing groove of the piston body, an angle A between the groove side and the bottom surface of the annular sealing groove is between 70° and 80°; an angle A between the groove side and the bottom surface of the annular sealing groove is between 75°, the air return groove of the utility model will not be blocked, and the sealing effect of the installed sealing ring is good.

[0004] In most existing gas springs, when the piston rod moves through the cylinder body, the friction between the surface of the piston rod and the inner wall of the sealing ring may reduce the sealing performance of the sealing ring when the piston rod moves in the cylinder body, thereby affecting the service life of the gas spring and the safety of its use. Utility Model Content

[0005] The utility model provides a gas spring with high safety, aiming to solve the problem that in most existing gas springs, when the piston rod moves telescopically inside the cylinder body, the friction between the surface of the piston rod and the inner wall of the sealing ring may reduce the sealing performance of the sealing ring, thereby affecting the service life of the gas spring and affecting the safety of its use.

[0006] The utility model is realized in this way: a gas spring with high safety comprises a gas spring body, a piston rod is arranged on the top of the gas spring body, a protective mechanism is arranged on the surface of the gas spring body, and a rotating sleeve is arranged on the surface of the piston rod;

[0007] The protective mechanism includes a connecting sleeve, a telescopic sleeve, a fixed plate and a connecting plate. The bottom of the connecting sleeve extends to the surface of the gas spring body and is threadedly connected to the surface of the gas spring body. The top and bottom of the telescopic sleeve are fixedly connected to the connecting sleeve and the opposite side of the fixed plate respectively. The bottom of the connecting plate is fixedly connected to the top of the fixed plate.

[0008] In order to achieve the effect of sealing the connecting sleeve, as a preferred gas spring with high safety of the utility model, a sealing gasket is arranged inside the connecting sleeve, and the bottom of the sealing gasket is in close contact with the top of the gas spring body.

[0009] In order to facilitate the movement of the rotating sleeve, as a preferred gas spring with high safety of the utility model, a sealing sleeve is provided on the top of the connecting plate, the top of the sealing sleeve is rotatably connected to a bearing, and the top of the bearing is rotatably connected to the bottom of the rotating sleeve.

[0010] In order to achieve the effect of fixing the rotating sleeve, as a preferred gas spring with high safety of the utility model, the surface of the piston rod is fixedly connected with a fixing block, and the inner wall of the rotating sleeve is threadedly connected to the surface of the fixing block.

[0011] In order to achieve the effect of sealing ring limiting, as a preferred gas spring with high safety of the utility model, the sealing sleeve is internally slidably connected to two limiting rings, and a sealing ring is arranged between opposite sides of the two limiting rings.

[0012] In order to achieve the effect of sealing the piston rod surface, as a preferred gas spring with high safety of the utility model, a sealing groove is opened on the surface of the piston rod, and the inner wall of the sealing ring extends to the inside of the sealing groove and is in close contact with the inside of the sealing groove.

[0013] In order to achieve the effect of limiting the position of the limiting ring, as a preferred gas spring with high safety of the utility model, the inside of the sealing sleeve is fixedly connected with a base, and three telescopic frames are arranged between the base and the opposite side of the bottom limiting ring.

[0014] In order to achieve the effect of fixing the telescopic frame, as a preferred gas spring with high safety of the utility model, the bottom of the telescopic frame is fixedly connected to a limiting pad, and the bottom of the limiting pad is fixedly connected to the top of the base.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The gas spring with high safety is achieved by threading the inside of the connecting sleeve with the surface of the gas spring body so that the top of the fixing plate is fixedly connected to the bottom of the connecting plate, thereby facilitating the arrangement of the telescopic sleeve on the surface of the piston rod, and the telescopic sleeve can be conveniently telescoped on the top of the gas spring body, so that the connecting plate is fixed to the surface of the piston rod by the rotating sleeve, so that the rotating sleeve can be conveniently telescoped through the piston rod, and the telescopic sleeve can be conveniently telescoped with the movement of the rotating sleeve, so that the sealing sleeve can protect and seal the stroke of the piston rod extending from the inside of the gas spring body, thereby preventing dust from entering the inside of the gas spring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structure diagram of the gas spring with high safety of the utility model;

[0018] Figure 2 It is a three-dimensional connection diagram of the fixing block and the piston rod in the utility model;

[0019] Figure 3 It is a three-dimensional connection schematic diagram of the protection mechanism in the utility model;

[0020] Figure 4 It is a three-dimensional connection diagram of the limit ring and the sealing ring in the utility model;

[0021] Figure 5 It is a schematic diagram of the three-dimensional connection between the telescopic frame and the limiting pad in the utility model.

[0022] In the figure, 1, gas spring body; 2, protective mechanism; 201, connecting sleeve; 202, telescopic sleeve; 203, fixed plate; 204, connecting plate; 3, sealing sleeve; 4, piston rod; 5, sealing groove; 6, sealing pad; 7, rotating sleeve; 8, telescopic frame; 9, sealing ring; 10, limiting ring; 11, bearing; 12, fixing block; 13, base; 14, limiting pad. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1-5 The utility model provides a technical solution: a gas spring with high safety, comprising a gas spring body 1, a piston rod 4 is arranged on the top of the gas spring body 1, a protective mechanism 2 is arranged on the surface of the gas spring body 1, and a rotating sleeve 7 is arranged on the surface of the piston rod 4;

[0026] The protective mechanism 2 includes a connecting sleeve 201, a telescopic sleeve 202, a fixed plate 203 and a connecting plate 204. The bottom of the connecting sleeve 201 extends to the surface of the gas spring body 1 and is threadedly connected to the surface of the gas spring body 1. The top and bottom of the telescopic sleeve 202 are fixedly connected to the connecting sleeve 201 and the opposite side of the fixed plate 203 respectively. The bottom of the connecting plate 204 is fixedly connected to the top of the fixed plate 203.

[0027] In this embodiment: by threading the inside of the connecting sleeve 201 with the surface of the gas spring body 1, the top of the fixing plate 203 is fixedly connected to the bottom of the connecting plate 204, so that the telescopic sleeve 202 is conveniently set on the surface of the piston rod 4, and the telescopic sleeve 202 can be conveniently telescoped on the top of the gas spring body 1, so that the connecting plate 204 is fixed to the surface of the piston rod 4 through the rotating sleeve 7, so that the rotating sleeve 7 can be conveniently telescoped through the piston rod 4, so that the telescopic sleeve 202 can be conveniently telescoped with the movement of the rotating sleeve 7, so that the sealing sleeve 3 protects and seals the stroke of the piston rod 4 extending from the inside of the gas spring body 1, thereby preventing dust from entering the inside of the gas spring body 1.

[0028] As a technical optimization solution of the present invention, a sealing gasket 6 is provided inside the connecting sleeve 201 , and the bottom of the sealing gasket 6 is in close contact with the top of the gas spring body 1 .

[0029] In this embodiment, by making the bottom of the sealing gasket 6 closely contact with the top of the gas spring body 1 , the sealing gasket 6 can seal the interior of the connecting sleeve 201 , thereby achieving the effect of sealing the connecting sleeve 201 .

[0030] As a technical optimization solution of the utility model, a sealing sleeve 3 is provided on the top of the connecting plate 204 , the top of the sealing sleeve 3 is rotatably connected to a bearing 11 , and the top of the bearing 11 is rotatably connected to the bottom of the rotating sleeve 7 .

[0031] In this embodiment, by rotatably connecting the bottom of the bearing 11 to the bottom of the rotating sleeve 7 , the rotating sleeve 7 can be conveniently rotated through the bearing 11 , thereby achieving the effect of facilitating the movement of the rotating sleeve 7 .

[0032] As a technical optimization solution of the utility model, a fixing block 12 is fixedly connected to the surface of the piston rod 4 , and the inner wall of the rotating sleeve 7 is threadedly connected to the surface of the fixing block 12 .

[0033] In this embodiment, the surface of the fixing block 12 is threadedly connected to the inner wall of the rotating sleeve 7 , so that the rotating sleeve 7 can be fixed by the fixing block 12 , thereby achieving the effect of fixing the rotating sleeve 7 .

[0034] As a technical optimization solution of the utility model, two limit rings 10 are slidably connected inside the sealing sleeve 3 , and a sealing ring 9 is arranged between opposite sides of the two limit rings 10 .

[0035] In this embodiment, by arranging the sealing ring 9 between the opposite sides of two limiting rings 10 , the limiting rings 10 can limit the sealing ring 9 , thereby achieving the effect of limiting the sealing ring 9 .

[0036] As a technical optimization solution of the present invention, a sealing groove 5 is provided on the surface of the piston rod 4 , and the inner wall of the sealing ring 9 extends to the inside of the sealing groove 5 and is in close contact with the inside of the sealing groove 5 .

[0037] In this embodiment, by making the inside of the sealing groove 5 closely contact with the inner wall of the sealing ring 9 , the sealing ring 9 can seal the piston rod 4 through the sealing groove 5 , thereby achieving the effect of sealing the surface of the piston rod 4 .

[0038] As a technical optimization solution of the present invention, a base 13 is fixedly connected to the inside of the sealing sleeve 3 , and three telescopic frames 8 are arranged between the base 13 and the opposite side of the bottom limiting ring 10 .

[0039] In this embodiment, by fixing the telescopic frame 8 at the bottom of the bottom limiting ring 10 , the telescopic frame 8 can provide limiting support for the limiting ring 10 , thereby achieving the effect of limiting the limiting ring 10 .

[0040] As a technical optimization solution of the utility model, the bottom of the telescopic frame 8 is fixedly connected to a limiting pad 14 , and the bottom of the limiting pad 14 is fixedly connected to the top of the base 13 .

[0041] In this embodiment, by fixing the top of the limiting pad 14 to the bottom of the telescopic frame 8 , the limiting pad 14 can be fixed to the telescopic frame 8 , thereby achieving the effect of fixing the telescopic frame 8 .

[0042] Working principle: First, the connecting sleeve 201 drives the sealing gasket 6 to move to the surface of the gas spring body 1 and seals and fixes it through the sealing gasket 6, then rotate the rotating sleeve 7, so that the rotating sleeve 7 moves on the surface of the fixed block 12 through the bearing 11, so that the bearing 11 drives the limiting ring 10 to move through the sealing sleeve 3, and the limiting ring 10 drives the sealing ring 9 to move to the inside of the sealing groove 5, so that the limiting ring 10 seals the surface of the piston rod 4 under the limit of the telescopic frame 8, so that the telescopic sleeve 202 can be easily telescoped on the top of the gas spring body 1, so that the rotating sleeve 7 can be easily extended and retracted through the piston rod 4. The telescopic sleeve 202 is telescoped and extended along with the movement of the rotating sleeve 7, so that the sealing sleeve 3 protects and seals the stroke of the piston rod 4 extending from the inside of the gas spring body 1, thereby preventing dust from entering the inside of the gas spring body 1, thereby improving the safety of the use of the gas spring body 1, and solving the problem that in most existing gas springs, when the piston rod 4 moves through the piston rod 4 and telescopes in the cylinder body, the friction between the surface of the piston rod 4 and the inner wall of the sealing ring 9 may reduce the sealing performance of the sealing ring 9, thereby affecting the service life of the gas spring and affecting its safety in use.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas spring with high safety, comprising a gas spring body (1), characterized in that: A piston rod (4) is arranged on the top of the gas spring body (1), a protective mechanism (2) is arranged on the surface of the gas spring body (1), and a rotating sleeve (7) is arranged on the surface of the piston rod (4); The protective mechanism (2) comprises a connecting sleeve (201), a telescopic sleeve (202), a fixing plate (203) and a connecting plate (204); the bottom of the connecting sleeve (201) extends to the surface of the gas spring body (1) and is threadedly connected to the surface of the gas spring body (1); the top and bottom of the telescopic sleeve (202) are fixedly connected to the connecting sleeve (201) and the opposite side of the fixing plate (203), respectively; and the bottom of the connecting plate (204) is fixedly connected to the top of the fixing plate (203).

2. A gas spring with high safety according to claim 1, characterized in that: A sealing gasket (6) is arranged inside the connecting sleeve (201), and the bottom of the sealing gasket (6) is in close contact with the top of the gas spring body (1).

3. A gas spring with high safety according to claim 1, characterized in that: A sealing sleeve (3) is provided at the top of the connecting plate (204), the top of the sealing sleeve (3) is rotatably connected to a bearing (11), and the top of the bearing (11) is rotatably connected to the bottom of the rotating sleeve (7).

4. A gas spring with high safety according to claim 1, characterized in that: A fixed block (12) is fixedly connected to the surface of the piston rod (4), and the inner wall of the rotating sleeve (7) is threadedly connected to the surface of the fixed block (12).

5. A gas spring with high safety according to claim 3, characterized in that: Two limiting rings (10) are slidably connected inside the sealing sleeve (3), and a sealing ring (9) is arranged between opposite sides of the two limiting rings (10).

6. A gas spring with high safety according to claim 5, characterized in that: A sealing groove (5) is provided on the surface of the piston rod (4), and the inner wall of the sealing ring (9) extends to the inside of the sealing groove (5) and is in close contact with the inside of the sealing groove (5).

7. A gas spring with high safety according to claim 3, characterized in that: The sealing sleeve (3) is fixedly connected to a base (13) inside, and three telescopic frames (8) are arranged between the base (13) and the opposite side of the bottom limiting ring (10).

8. A gas spring with high safety according to claim 7, characterized in that: The bottom of the telescopic frame (8) is fixedly connected to a limiting pad (14), and the bottom of the limiting pad (14) is fixedly connected to the top of the base (13).

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