A multi-stage locking gas spring mechanism

Abstract

The present invention discloses a multi-stage locking gas spring mechanism, which includes a gas spring main body. The gas spring main body includes a housing and a piston rod, and the piston rod is slidably arranged in the housing; it also includes a plurality of fixed tubes fixed outside the housing, and a sliding rod is slidably arranged in each fixed tube. The sliding rod is fixedly connected to the piston rod, and each sliding rod is fixedly connected to each fixed tube through an adjusting member respectively, so as to arbitrarily adjust the position of the sliding rod in the fixed tube. The multi-stage locking gas spring mechanism provided by the present invention adjusts the length of the gas spring main body by sliding the piston rod in the housing, and then slides the sliding rod in the fixed tube, and fixes the sliding rod in the fixed tube through the adjusting member, so as to conveniently clamp the sliding rod at any position in the fixed tube, realizing arbitrary adjustment of the length of the gas spring main body, improving the utilization rate, enhancing the applicability and increasing the practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of gas springs, and particularly to a multi-stage locking gas spring mechanism. Background Art

[0002] A gas spring is an industrial accessory that can perform functions such as support, buffering, braking, height adjustment, and angle adjustment; it consists of the following parts: a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler, control components inside the cylinder, control components outside the cylinder, and connectors, etc.; the principle is to fill an inert gas or an oil-gas mixture in a sealed pressure cylinder, so that the pressure in the cavity is several times or dozens of times higher than the atmospheric pressure, and the movement of the piston rod is realized by using the pressure difference generated by the cross-sectional area of the piston rod being smaller than the cross-sectional area of the piston.

[0003] For example, in the Chinese patent with the authorization announcement number "CN105650184B" and the name "Multi-stage locking gas spring", the multi-stage locking gas spring of this patent is provided with a multi-stage positioning structure inside the cylinder barrel. Through external force compression, the elastic pieces on the outer circle of the piston are locked in the positioning grooves, and the different extended lengths of the piston rod can be locked, which is suitable for different height requirements, meets the needs of different occasions, reduces costs, and improves utilization rate.

[0004] When using a gas spring, it is necessary to adjust the length of the gas spring. For example, in the above-mentioned patent, by snapping the elastic pieces into different positioning grooves, the length adjustment of the piston rod is realized. However, due to the limitation of the distance between the positioning grooves, the length of the piston rod cannot be adjusted to any height, thus reducing the applicability of the gas spring and its practicality. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-stage locking gas spring mechanism to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: It includes a gas spring main body, the gas spring main body includes a housing and a piston rod, and the piston rod is slidably arranged inside the housing;

[0007] It further includes a plurality of fixed tubes fixed outside the housing. A sliding rod is slidably arranged inside each fixed tube. The sliding rod is fixedly connected to the piston rod, and each sliding rod is fixedly connected to each fixed tube through an adjusting member respectively, so as to arbitrarily adjust the position of the sliding rod inside the fixed tube.

[0008] As a further description of the above technical solution:

[0009] The adjusting member includes a fixed rod fixed to the sliding rod. A plurality of abutting plates are rotatably connected to the outside of the fixed rod, and a rotating shaft is rotatably connected to the fixed rod. A connecting rope is fixedly connected to the abutting plate, and a first torsion spring is arranged on the abutting plate. Two ends of the first torsion spring are respectively fixedly connected to the abutting plate and the fixed rod.

[0010] As a further description of the above technical solution:

[0011] It further includes a clamping member. The clamping member includes a connecting ring. The connecting ring is slidably arranged in each sliding rod. Each connecting rope respectively bypasses each rotating shaft and extends into the sliding rod to be fixedly connected with the connecting ring. A guide rod is fixedly connected to the outside of each sliding rod. A clamping block is slidably arranged in the guide rod. The clamping block is fixedly connected with the inner wall of the guide rod through a support spring.

[0012] As a further description of the above technical solution:

[0013] The clamping member further includes a plurality of clamping grooves formed in the connecting ring. The clamping grooves are adapted to the clamping blocks. A push plate is slidably arranged outside the guide rod. One side of the clamping block close to the push plate is an inclined surface.

[0014] As a further description of the above technical solution:

[0015] It further includes a cleaning cotton sleeved on the piston rod. The cleaning cotton cleans the piston rod through a cleaning member. The cleaning member includes a driven gear rotatably arranged outside the piston tube. The driven gear is detachably connected with the cleaning cotton. A driving gear is sleeved on the outside of each sliding rod. The driving gear is rotatably connected with the fixed tube. Each driving gear is meshed with the driven gear.

[0016] As a further description of the above technical solution:

[0017] A first spiral groove is arranged on the outside of each sliding rod. A limiting block adapted to the first spiral groove is fixedly connected in each driving gear;

[0018] It further includes a protective cover sleeved on the outside of the driven gear and each driving gear.

[0019] As a further description of the above technical solution:

[0020] It further includes a clamping plate rotatable within each of the fixed tubes. Each of the fixed tubes is clamped to the clamping plate through a rotating member. The rotating member rotates out to drive the clamping plate to rotate. The rotating member includes a rotating plate rotatable within the fixed tube. A guiding hole is formed at the end of the rotating plate. An abutting rod is slidably arranged on one side of the clamping plate close to the rotating plate. A connecting rod is fixedly connected to the abutting rod, and the connecting rod is slidably arranged within the guiding hole.

[0021] As a further description of the above technical solution:

[0022] The rotating member further includes a connecting tube sleeved outside the sliding rod. A second spiral groove is formed on the outside of the connecting tube, and a spiral groove adapted to the second spiral groove is fixedly connected within the fixed tube. A centrifugal block is slidably arranged within the connecting tube.

[0023] As a further description of the above technical solution:

[0024] A guiding block is slidably arranged within the fixed tube, and the guiding block is fixedly connected to the inner wall of the fixed tube through a limiting spring.

[0025] As a further description of the above technical solution:

[0026] A second torsion spring is arranged on the clamping plate. Two ends of the torsion spring are respectively fixedly connected to the clamping plate and the fixed tube. A fixing plate in active contact with the fixed rod is fixedly connected to the inner wall of the fixed tube.

[0027] In the above technical solution, the beneficial effects of a multi-stage locking gas spring mechanism provided by the present invention are as follows:

[0028] In the present invention, by sliding the piston rod within the housing, the length of the gas spring body is adjusted. Then, the sliding rod slides within the fixed tube, and the sliding rod is fixed within the fixed tube through the adjusting member, so as to conveniently clamp the sliding rod at any position within the fixed tube, realizing the adjustment of any length of the gas spring body. The structure is simple, the operation is convenient, the utilization rate is improved, the applicability is improved, and the practicability is increased.

[0029] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0030] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and does not represent the full scope of the disclosed technology or a complete disclosure of all features. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings.

[0032] Figure 1 Schematic three-dimensional structure diagram provided by an embodiment of the present invention;

[0033] Figure 2 Partial three-dimensional structure diagram of the cleaning member and the cleaning cotton provided by an embodiment of the present invention;

[0034] Figure 3 Partial three-dimensional structure diagram of the adjusting member and the sliding rod provided by an embodiment of the present invention;

[0035] Figure 4 Schematic side view structure diagram provided by an embodiment of the present invention;

[0036] Figure 5 Provided by an embodiment of the present invention Figure 1 Enlarged view of the position A shown;

[0037] Figure 6 Provided by an embodiment of the present invention Figure 2 Enlarged view of the position B shown;

[0038] Figure 7 Provided by an embodiment of the present invention Figure 4 Enlarged view of the position C shown;

[0039] Figure 8 Provided by an embodiment of the present invention Figure 4 Enlarged view of the position D shown;

[0040] Figure 9 Provided by an embodiment of the present invention Figure 5 Enlarged view of the position E shown;

[0041] Figure 10 Provided by an embodiment of the present invention Figure 7 Enlarged view of the position F shown.

[0042] Explanation of reference numerals:

[0043] 1. Gas spring body; 11. Outer shell; 12. Piston rod; 2. Fixed tube; 21. Sliding rod; 3. Adjusting member; 31. Fixed rod; 32. Contact plate; 33. First torsion spring; 34. Rotating shaft; 35. Connecting rope; 4. Clamping member; 41. Connecting ring; 42. Guide rod; 43. Clamping block; 44. Clamping groove; 45. Support spring; 46. Pushing plate; 5. Cleaning cotton; 6. Cleaning member; 61. Driven gear; 62. Driving gear; 63. First spiral groove; 64. Limiting block; 65. Protective cover; 7. Clamping plate; 71. Fixed plate; 72. Second torsion spring; 8. Rotating member; 81. Rotating plate; 82. Guide hole; 83. Contact rod; 84. Centrifugal block; 85. Connecting rod; 86. Guide block; 861. Limiting spring; 87. Connecting tube; 88. Second spiral groove. Detailed implementation manners

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0045] Please refer to FIGS. 1-10. A multi-stage locking gas spring mechanism provided in this embodiment includes a gas spring body 1. The gas spring body 1 includes an outer shell 11 and a piston rod 12. The piston rod 12 is slidably disposed in the outer shell 11. The mechanism further includes a plurality of fixed tubes 2 fixed outside the outer shell 11. A sliding rod 21 is slidably disposed in each fixed tube 2. The sliding rod 21 is fixedly connected to the piston rod 12. Each sliding rod 21 is fixedly connected to each fixed tube 2 through an adjusting member 3 respectively, so as to adjust the position of the sliding rod 21 in the fixed tube 2. By sliding the piston rod 12 in the outer shell 11, the length of the gas spring body 1 can be adjusted. Then, by sliding the sliding rod 21 in the fixed tube 2 and fixing the sliding rod 21 in the fixed tube 2 through the adjusting member 3, the sliding rod 21 can be conveniently clamped at any position in the fixed tube 2, realizing the adjustment of the length of the gas spring body 1 to any length. The structure is simple, the operation is convenient, the utilization rate is improved, the applicability is improved, and the practicability is increased.

[0046] In a further embodiment provided by the present invention, the adjusting member 3 includes a fixing rod 31 fixed to the sliding rod 21. A plurality of abutting plates 32 are rotatably connected to the outside of the fixing rod 31. A rotating shaft 34 is rotatably connected to the fixing rod 31. A connecting rope 35 is fixedly connected to the abutting plate 32. A first torsion spring 33 is arranged on the abutting plate 32. Two ends of the first torsion spring 33 are respectively fixedly connected to the abutting plate 32 and the fixing rod 31. By pulling the connecting rope 35, the abutting plate 32 rotates, the first torsion spring 33 rotates, the abutting plate 32 moves out of the inner wall of the fixing tube 2, then the piston rod 12 is pulled to move, the piston rod 12 slides in the fixing tube 2, and the sliding rod 21 slides in the fixing tube 2. When it moves to a suitable position, the connecting rope 35 is released. Due to the elasticity of the first torsion spring 33, the abutting plate 32 is driven to rotate and contact the inner wall of the fixing tube 2, so that the sliding rod 21 and the fixing tube 2 abut against each other.

[0047] Further, a clamping member 4 is further included. The clamping member 4 includes a connecting ring 41. The connecting ring 41 is slidably arranged in each sliding rod 21. Each connecting rope 35 respectively bypasses each rotating shaft 34 and extends into the sliding rod 21 to be fixedly connected with the connecting ring 41. A guide rod 42 is fixedly connected to the outside of each sliding rod 21. A clamping block 43 is slidably arranged in the guide rod 42. The clamping block 43 is fixedly connected to the inner wall of the guide rod 42 through a support spring 45. The adjusting member 3 is controlled by the clamping member 4 to prevent the adjusting member 3 from being pulled so that the adjusting member 3 cannot fix the fixing tube 2, thus affecting the movement of the piston rod 12 in the housing 11.

[0048] Furthermore, the clamping member 4 further includes a plurality of clamping grooves 44 formed in the connecting ring 41. The clamping grooves 44 are adapted to the clamping blocks 43. A push plate 46 is slidably arranged outside the guide rod 42. One side of the clamping block 43 close to the push plate 46 is an inclined surface. By holding the connecting ring 41 and then pressing the push plate 46 to move the push plate 46 into the connecting ring 41, the clamping block 43 moves out of the clamping groove 44, the connecting ring 41 moves out of the guide rod 42, and the connecting rope 35 is pulled by pulling the connecting ring 41. When it moves to a suitable position, the connecting ring 41 is released, so that the connecting ring 41 moves outside the guide rod 42. Then, according to the inclined surface of the clamping block 43, the clamping block 43 moves into the guide rod 42, the support spring 45 is compressed. When the clamping groove 44 moves to the position of the clamping block 43, due to the elastic release of the support spring 45, the clamping block 43 moves into the clamping groove 44, thus realizing the clamping of the connecting ring 41.

[0049] In a further embodiment provided by the present invention, it further includes a cleaning cotton 5 sleeved on the piston rod 12. The cleaning cotton 5 cleans the piston rod 12 through a cleaning member 6. The cleaning member 6 includes a driven gear 61 rotatably disposed outside the piston tube. The driven gear 61 is detachably connected to the cleaning cotton 5. A driving gear 62 is sleeved on each sliding rod 21. The driving gear 62 is rotatably connected to the fixed tube 2. Each driving gear 62 meshes with the driven gear 61. When the piston rod 12 slides into the housing 11, it drives the cleaning member 6 to rotate, thereby driving the cleaning cotton 5 to rotate synchronously, so as to clean the outer surface of the piston rod 12 and prevent dust from entering the piston rod 12.

[0050] Specifically, a first spiral groove 63 is provided on each sliding rod 21, and a limiting block 64 adapted to the first spiral groove 63 is fixedly connected to each driving gear 62. It further includes a protective cover 65 sleeved outside the driven gear 61 and each driving gear 62. When the sliding rod 21 moves into the fixed tube 2, under the limitation of the first spiral groove 63, the limiting block 64 rotates, thereby driving the driving gear 62 to rotate, and the driven gear 61 rotates synchronously, driving the cleaning cotton 5 to rotate in the driven gear 61. Thus, when the piston rod 12 moves into the housing 11, the cleaning cotton 5 cleans the outside of the piston rod 12 to prevent dust from entering the housing 11, and the protective cover 65 protects the driving gear 62 and the driven gear 61.

[0051] In a further solution provided by the present invention, it further includes a clamping plate 7 rotatably disposed in each fixed tube 2. Each fixed tube 2 is clamped to the clamping plate 7 through a rotating member 8. The rotating member 8 rotates to move out of the clamping member 4 to drive the clamping plate 7 to rotate. The rotating member 8 includes a rotating plate 81 rotatably disposed in the fixed tube 2. A guiding hole 82 is opened at the end of the rotating plate 81. An abutting rod 83 is slidably disposed on one side of the clamping plate 7 close to the rotating plate 81. A connecting rod 85 is fixedly connected to the abutting rod 83. The connecting rod 85 is slidably disposed in the guiding hole 82. The rotating member 8 unlocks the clamping plate 7, so that the clamping plate 7 rotates. After the moving speed of the piston rod 12 is abnormal, it buffers and limits the sliding rod 21, thereby protecting the piston rod 12.

[0052] In the present invention, the rotating member 8 further includes a connecting pipe 87 sleeved outside the sliding rod 21. A second spiral groove 88 is formed on the outside of the connecting pipe 87, and a spiral groove adapted to the second spiral groove 88 is fixedly connected inside the fixed pipe 2. An eccentric block 84 is slidably arranged inside the connecting pipe 87. When the piston rod 12 malfunctions during operation, causing the piston rod 12 to slide rapidly into the housing 11, the sliding rod 21 is caused to move rapidly into the fixed pipe 2, causing the connecting pipe 87 to move synchronously. When the second spiral groove 88 moves to the guiding block 86, the second spiral groove 88 is caused to rotate under the action of the guiding block 86, causing the connecting pipe 87 to rotate synchronously, and the eccentric block 84 is caused to move out of the connecting pipe 87 by centrifugal force; after the eccentric block 84 moves out of the connecting pipe 87, it pushes the rotating plate 81 to rotate, causing the rotating plate 81 with the guiding hole 82 to move upward, causing the connecting rod 85 to pull the abutting rod 83 out of the clamping plate 7. Through the elastic release of the second torsion spring 72, the clamping plate 7 is caused to move out of the fixed pipe 2 and lap with the fixing plate 71. When the fixing rod 31 moves to the clamping plate 7, it buffers and limits the sliding rod 21, thus preventing the sliding rod 21 from moving to the bottom of the housing 11.

[0053] Further, a guiding block 86 is slidably arranged inside the fixed pipe 2. The guiding block 86 is fixedly connected to the inner wall of the fixed pipe 2 through a limiting spring 861. When the piston rod 12 moves into the housing 11, the sliding rod 21 is caused to move into the fixed pipe 2, causing the abutting plate 32 to move to the guiding block 86. Due to the inclined surface of the guiding block 86, the guiding block 86 is caused to move into the fixed pipe 2, compressing the limiting spring 861, thus facilitating the abutting plate 32 to pass through the guiding block 86.

[0054] In the further provided solution of the present invention, a second torsion spring 72 is arranged on the clamping plate 7. The two ends of the torsion spring are respectively fixedly connected to the clamping plate 7 and the fixed pipe 2. A fixing plate 71 in active contact with the fixing rod 31 is fixedly connected to the inner wall of the fixed pipe 2. When the abutting rod 83 is clamped into the clamping plate 7, the second torsion spring 72 is compressed, causing the clamping plate 7 to be limited, so that when the piston rod 12 moves normally, the clamping plate 7 will not be moved out.

[0055] When adjusting the length of the piston rod 12, hold the connecting ring 41 Figure 6 as a reference, then press the push plate 46 to move the push plate 46 into the connecting ring 41, causing the clamping block 43 to move out of the clamping groove 44, causing the connecting ring 41 to move out of the guiding rod 42, causing the connecting ring 41 to be pulled to drive the connecting rope 35 to move, causing the abutting plate 32 to rotate, causing the first torsion spring 33 to rotate, causing the abutting plate 32 to move out of the inner wall of the fixed pipe 2, then pull the piston rod 12 to move, causing the piston rod 12 to slide inside the fixed pipe 2, causing the sliding rod 21 to slide inside the fixed pipe 2;

[0056] After moving to the appropriate position, release the connecting ring 41 so that Figure 9 taking this as a reference, the connecting ring 41 is moved outside the guide rod 42. Then, since the clamping block 43 has an inclined surface, the clamping block 43 is moved into the guide rod 42, compressing the support spring 45. When the clamping groove 44 moves to the position of the clamping block 43, through the elastic release of the support spring 45, the clamping block 43 is moved into the clamping groove 44, thus realizing the clamping of the connecting ring 41. Through the elasticity of the first torsion spring 33, the abutting plate 32 is driven to rotate and contact the inner wall of the fixed tube 2, so that the sliding rod 21 and the fixed tube 2 are abutted against each other;

[0057] When the sliding rod 21 is moved into the fixed tube 2, under the limitation of the first spiral groove 63, the limiting block 64 rotates, thus driving the driving gear 62 to rotate, making the driven gear 61 rotate synchronously, driving the cleaning cotton 5 to rotate inside the driven gear 61. Thus, when the piston rod 12 moves into the housing 11, the cleaning cotton 5 cleans the outside of the piston rod 12 to prevent dust from entering the housing 11 so that Figure 2 taking this as a reference;

[0058] When the piston rod 12 malfunctions so that Figure 7 taking this as a reference, the piston rod 12 slides rapidly into the housing 11, resulting in the rapid movement of the sliding rod 21 into the fixed tube 2, making the connecting tube 87 move synchronously. When the second spiral groove 88 moves to the guide block 86, under the action of the guide block 86, the second spiral groove 88 rotates, so that the connecting tube 87 rotates synchronously, and the centrifugal block 84 moves out of the connecting tube 87 by centrifugal force;

[0059] After the centrifugal block 84 moves out of the connecting tube 87, it pushes the rotating plate 81 to rotate, so that the rotating plate 81 with the guide hole 82 moves upward, so that the connecting rod 85 pulls the abutting rod 83 out of the clamping plate 7. Through the elastic release of the second torsion spring 72, the clamping plate 7 moves out of the fixed tube 2 and abuts against the fixing plate 71. When the fixing rod 31 moves to the position of the clamping plate 7, it buffers and limits the sliding rod 21, thus preventing the sliding rod 21 from moving to the bottom of the housing 11.

[0060] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A multi-stage locking gas spring mechanism, comprising a gas spring body (1), characterized in that: The gas spring body (1) includes a housing (11) and a piston rod (12), and the piston rod (12) is slidably disposed within the housing (11). It further includes a plurality of fixed tubes (2) fixed outside the housing (11). A sliding rod (21) is slidably disposed within each fixed tube (2). The sliding rod (21) is fixedly connected to the piston rod (12). Each sliding rod (21) is fixedly connected to each fixed tube (2) through an adjusting member (3) respectively, so as to adjust the position of the sliding rod (21) within the fixed tube (2). It further includes a clamping plate (7) rotatably disposed within each fixed tube (2). Each fixed tube (2) is clamped to the clamping plate (7) through a rotating member (8). Driving the clamping plate (7) to rotate by rotating and removing the clamping plate (7) through the rotating member (8). The rotating member (8) includes a rotating plate (81) rotatably disposed within the fixed tube (2). A guiding hole (82) is formed at the end of the rotating plate (81). An abutting rod (83) is slidably disposed on one side of the clamping plate (7) close to the rotating plate (81). A connecting rod (85) is fixedly connected to the abutting rod (83), and the connecting rod (85) is slidably disposed within the guiding hole (82). The rotating member (8) further includes a connecting tube (87) sleeved outside the sliding rod (21). A second spiral groove (88) is formed on the outside of the connecting tube (87). A spiral groove adapted to the second spiral groove (88) is fixedly connected within the fixed tube (2). A centrifugal block (84) is slidably disposed within the connecting tube (87). A guiding block (86) is slidably disposed within the fixed tube (2). The guiding block (86) is fixedly connected to the inner wall of the fixed tube (2) through a limiting spring (861). A second torsion spring (72) is disposed on the clamping plate (7). Two ends of the torsion spring are respectively fixedly connected to the clamping plate (7) and the fixed tube (2). A fixing plate (71) in active contact with the clamping plate (7) is fixedly connected to the inner wall of the fixed tube (2).

2. The multi-stage locking gas spring mechanism according to claim 1, characterized in that, The adjusting member (3) includes a fixed rod (31) fixed to the sliding rod (21). A plurality of abutting plates (32) are rotatably connected to the outside of the fixed rod (31). And a rotating shaft (34) is rotatably connected to the fixed rod (31). A connecting rope (35) is fixedly connected to the abutting plate (32). A first torsion spring (33) is disposed on the abutting plate (32). Two ends of the first torsion spring (33) are respectively fixedly connected to the abutting plate (32) and the fixed rod (31).

3. The multi-stage locking gas spring mechanism according to claim 2, characterized in that, It further includes a clamping member (4), the clamping member (4) includes a connecting ring (41), the connecting ring (41) is slidably arranged in each of the sliding rods (21), each of the connecting ropes (35) respectively bypasses each of the rotating shafts (34) and extends into the sliding rod (21) to be fixedly connected with the connecting ring (41), a guide rod (42) is fixedly connected to the outside of each of the sliding rods (21), a clamping block (43) is slidably arranged in the guide rod (42), and the clamping block (43) is fixedly connected to the inner wall of the guide rod (42) through a support spring (45).

4. The multi-stage locking gas spring mechanism according to claim 3, characterized in that, The clamping member (4) further includes a plurality of clamping grooves (44) formed in the connecting ring (41), the clamping grooves (44) are adapted to the clamping blocks (43), a push plate (46) is slidably arranged outside the guide rod (42), and one side of the clamping block (43) close to the push plate (46) is an inclined surface.

5. A multi-stage locking gas spring mechanism according to claim 1, characterized in that, It further includes a cleaning cotton (5) sleeved on the piston rod (12), the cleaning cotton (5) cleans the piston rod (12) through a cleaning member (6), the cleaning member (6) includes a driven gear (61) rotating outside the piston rod (12), the driven gear (61) is detachably connected to the cleaning cotton (5), a driving gear (62) is sleeved on the outside of each of the sliding rods (21), the driving gear (62) is rotatably connected to the fixed pipe (2), and each of the driving gears (62) meshes with the driven gear (61).

6. The multi-stage locking gas spring mechanism according to claim 5, characterized in that, A first spiral groove (63) is provided on the outside of each of the sliding rods (21), and a limiting block (64) adapted to the first spiral groove (63) is fixedly connected to the inside of each of the driving gears (62); It further includes a protective cover (65), and the protective cover (65) is sleeved outside the driven gear (61) and each of the driving gears (62).

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