CN210196339U - Low-friction lockable gas spring - Google Patents
Low-friction lockable gas spring Download PDFInfo
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- CN210196339U CN210196339U CN201920942899.7U CN201920942899U CN210196339U CN 210196339 U CN210196339 U CN 210196339U CN 201920942899 U CN201920942899 U CN 201920942899U CN 210196339 U CN210196339 U CN 210196339U
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Abstract
The utility model is suitable for the technical field of gas springs, and provides a low-friction lockable gas spring, which comprises a telescopic component and a locking component, wherein the telescopic component comprises a cylinder body, a piston rod, a bushing spacer bush, a first sealing ring and an air cavity, the air cavity is arranged in an inner cavity of the cylinder body, the piston is in sliding connection with the cylinder body and is positioned in the inner cavity of the air cavity, and when the telescopic length of the gas spring is locked, only an adjusting knob needs to be screwed, so that the adjusting knob drives the valve body to move downwards, gas ports at the opposite sides of a left air passage and a right air passage are blocked, gas at the left side and the right side of the piston is prevented from mutually circulating, the left-right movement of the piston is prevented, the telescopic length of the gas spring is adjusted, and the current gas spring locking valve is prevented from being arranged at one end of the piston, not only hinders the installation of air spring, still is convenient for adjust the problem of valve.
Description
Technical Field
The utility model belongs to the technical field of the air spring, especially, relate to a low friction lockable air spring.
Background
The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. The device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the cross section area of the piston rod smaller than that of the piston. Due to the fundamental difference in principle, the gas spring has the remarkable advantages of relatively slow speed, small dynamic force change (generally within 1: 1.2) and easiness in control over a common spring.
The existing air spring locking valve is arranged at one end of a piston rod or a cylinder body, so that the installation of the air spring is hindered, and the valve is convenient to adjust.
SUMMERY OF THE UTILITY MODEL
The utility model provides a but low friction air spring lock aims at solving present air spring locking valve and installs the one end at piston rod or cylinder body, has not only hindered the installation of air spring, is convenient for still carry out the problem adjusted to the valve.
The utility model discloses a realize like this, a low friction lockable gas spring, including flexible subassembly and locking subassembly, flexible subassembly includes cylinder body, piston rod, bush spacer, first sealing washer and air cavity, the air cavity is seted up in the inner chamber of cylinder body, piston rod and piston fixed connection, bush spacer and cylinder body fixed connection, spacer and bush spacer integrated into one piece, spacer and cylinder body fixed connection, first sealing washer and bush spacer fixed connection, and lie in one side that the bush spacer is close to the air cavity lateral wall all around, piston rod and bush spacer and spacer sliding connection, and run through in bush spacer and spacer extension to the left end of cylinder body;
the locking assembly comprises an air passage, a valve body, a rubber sealing sleeve, a connecting sheet, a second sealing ring, a valve groove, an adjusting knob, a fixing nut and an adjusting screw rod, the air passage is arranged in an upper side wall inner cavity of the cylinder body, and is communicated with the left side and the right side of the top end of the air cavity, the valve slot is arranged in the inner cavity of the upper side wall of the cylinder body, and is communicated with the left and the right air passages, the rubber sealing sleeve is fixedly connected with the valve body and sleeved outside the valve body, the rubber sealing sleeve is connected with the valve groove in a sliding way, the connecting piece is fixedly connected with the valve body, the adjusting screw rod is rotationally connected with the connecting piece, and is positioned at the top end of the air passage, the fixed nut is fixedly connected with the cylinder body and positioned at the top end of the inner cavity of the valve groove, the adjusting screw rod is in threaded connection with the fixed nut, and the adjusting knob is fixedly connected with the fixing nut.
The utility model discloses still provide preferred, flexible subassembly still includes the engaging lug, the engaging lug with the piston rod with cylinder body fixed connection, and be located respectively the engaging lug with the opposite side of cylinder body.
The utility model discloses still provide preferred, flexible subassembly still includes damping spring, the outside of piston rod is located to the damping spring cover, and is located between bush spacer and the piston.
The utility model discloses it is preferred still to provide, damping spring's the biggest compression length is greater than the interval between air flue left end and the bush spacer.
The utility model discloses still provide preferred, the locking subassembly still includes the second sealing washer, second sealing washer and connection piece fixed connection, and the cover locates the outside of connection piece.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a low friction can lock air spring, through setting up the air flue, valve spool and valve body, make when locking the flexible length of this air spring, only need twist and move adjust knob, make adjust screw drive valve body downstream, thereby will control two sets of air flue opposite side gas ports and block, thereby prevent the mutual circulation of gas of the piston left and right sides, thereby prevent piston side-to-side movement, adjust the flexible length of this air spring in order to realize, the one end at piston rod or cylinder body has been avoided present air spring locking valve, not only the installation of air spring has been hindered, still be convenient for carry out the problem of adjusting to the valve.
Drawings
FIG. 1 is a sectional view of the present invention;
fig. 2 is an enlarged view of the part a structure of the present invention.
In the figure: 1-telescopic component, 11-cylinder body, 12-piston, 13-piston rod, 14-bushing, 15-spacer bush, 16-first sealing ring, 17-air cavity, 18-connecting lug, 19-damping spring, 2-locking component, 21-air channel, 22-valve body, 23-rubber sealing sleeve, 24-connecting piece, 25-second sealing ring, 26-valve groove, 27-adjusting knob, 28-fixing nut and 29-adjusting screw rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, the present invention provides a technical solution: a low-friction lockable gas spring comprises a telescopic component 1 and a locking component 2, wherein the telescopic component 1 comprises a cylinder body 11, a piston 12, a piston rod 13, a bush spacer 14, a spacer 15, a first sealing ring 16 and an air cavity 17, the air cavity 17 is arranged in an inner cavity of the cylinder body 11, the piston 12 is connected with the cylinder body 11 in a sliding way, and is positioned in the inner cavity of the air cavity 17, the piston rod 13 is fixedly connected with the piston 12 and is positioned at the left end of the piston 12, the bushing spacer 14 is fixedly connected with the cylinder body 11, and is positioned at the left end of the inner cavity of the air cavity 17, the spacer bush 15 and the bushing spacer bush 14 are integrally formed and positioned at the left end of the bushing spacer bush 14, the spacer bush 15 is fixedly connected with the cylinder body 11, the first sealing ring 16 is fixedly connected with the bushing spacer bush 14, the piston rod 13 is slidably connected with the bushing spacer 14 and the spacer 15 and penetrates through the bushing spacer 14 and the spacer 15 to extend to the left end of the cylinder body 11;
the locking component 2 comprises an air passage 21, a valve body 22, a rubber sealing sleeve 23, a connecting piece 24, a second sealing ring 25, a valve groove 26, an adjusting knob 27, a fixing nut 28 and an adjusting screw 29, wherein the air passage 21 is provided with an upper side wall inner cavity which is communicated with the upper side wall of the cylinder body 11 and the left side and the right side of the top end of the air cavity 17, the valve groove 26 is provided with an upper side wall inner cavity which is communicated with the cylinder body 11 and the left side and the right side of the air passage 21, the rubber sealing sleeve 23 is fixedly connected with the valve body 22 and sleeved outside the valve body 22, the rubber sealing sleeve 23 is slidably connected with the valve groove 26 and is positioned in the inner cavity of the valve groove 26, the connecting piece 24 is fixedly connected with the valve body 22 and is positioned at the top end of the valve body 22, the adjusting screw 29 is rotatably connected with the connecting piece 24 and is positioned at the top end of the air, and penetrates the fixing nut 28 to the top end of the cylinder 11, and the adjusting knob 27 is fixedly connected with the fixing nut 28 and is located at the top end of the fixing nut 28.
In this embodiment, through setting up air flue 21, valve spool 26 and valve body 22, make when locking the flexible length of this air spring, only need twist adjusting knob 27, make adjusting screw 29 drive valve body 22 move down mutually, thereby will control two sets of air flues 21 opposite side gas ports and block, thereby prevent the mutual circulation of gas of the piston 12 left and right sides, thereby prevent piston 12 side-to-side movement, adjust the flexible length of this air spring in order to realize, the one end at piston rod 13 or cylinder body 11 has been avoided present air spring locking valve, not only the installation of air spring has been hindered, still be convenient for adjust the problem to the valve.
Furthermore, the telescopic assembly 1 further comprises a connecting lug 18, and the connecting lug 18 is fixedly connected with the piston rod 13 and the cylinder body 11 and is respectively located on the opposite sides of the connecting lug 18 and the cylinder body 11.
In this embodiment, the gas spring can be easily installed by providing the engaging lug 18.
Further, the telescopic assembly 1 further includes a damping spring 19, and the damping spring 19 is sleeved outside the piston rod 13 and located between the bushing spacer 14 and the piston 12.
In this embodiment, by providing the damping spring 19, when the piston rod 13 is not squeezed by an external force to recover the telescopic length, the piston 12 moves leftward and contacts with the damping spring 19, and the damping spring 19 is compressed, so as to slow down the movement speed of the piston 12, and avoid the problem that the piston 12 moves leftward rapidly and collides with the bushing spacer 14, so that the bushing spacer 14 is separated from the cylinder 11 and damaged.
Further, the maximum compression length of the damping spring 19 is greater than the distance between the left end of the air passage 21 and the bushing spacer 14.
In the present embodiment, the movement of the piston 12 is thereby limited.
Further, the locking assembly 2 further includes a second sealing ring 25, and the second sealing ring 25 is fixedly connected to the connecting piece 24 and is sleeved on the outer side of the connecting piece 24.
In the present embodiment, the second seal ring 25 is provided to effectively seal the valve groove 26, thereby avoiding the problem that the gas in the valve groove 26 flows out between the peripheral side wall of the valve groove 26 and the rubber seal cover 23 and the connecting piece 24.
The utility model discloses a theory of operation and use flow: after the utility model is installed, in the using process of the air spring, when the piston rod 13 or the cylinder body 11 is under the external pressure, the gas on the right side of the piston 12 is compressed to the left end of the piston 12 through the air passage 21, so that the piston rod 13 is contracted to the inner cavity of the cylinder body 11, meanwhile, the piston rod 13 enters the inner cavity of the air cavity 17 on the left side of the piston 12, so that the left pressure of the piston 12 is greater than the pressure on the right side of the piston 12, when the acting force of the piston rod 13 or the cylinder body 11 opposite to the outside disappears, the high-pressure gas on the left side of the piston 12 automatically flows to the left side of the piston 12, thereby pushing the left end of the piston 12 to move, so that the piston rod 13 is pushed out of the inner cavity of the air cavity 17 and is restored to the initial state, when the expansion length of the air spring needs to be controlled, thereby preventing the gas on the left side and the gas on the right side of the piston 12 from mutually communicating, and preventing the piston 12 from moving left and right, so as to realize the adjustment of the telescopic length of the gas spring.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A low friction lockable gas spring, characterized in that: comprises a telescopic component (1) and a locking component (2), wherein the telescopic component (1) comprises a cylinder body (11), a piston (12), a piston rod (13), a bushing spacer bush (14), a spacer bush (15), a first sealing ring (16) and an air cavity (17), the air cavity (17) is arranged in the inner cavity of the cylinder body (11), the piston rod (13) is fixedly connected with the piston (12), the bushing spacer bush (14) is fixedly connected with the cylinder body (11), the spacer bush (15) and the bushing spacer bush (14) are integrally formed, the spacer bush (15) is fixedly connected with the cylinder body (11), the first sealing ring (16) is fixedly connected with the lining spacer bush (14), and is positioned at one side of the bushing spacer sleeve (14) close to the peripheral side wall of the air cavity (17), the piston rod (13) is connected with the bushing spacer bush (14) and the spacer bush (15) in a sliding way, and the left end of the cylinder body (11) is extended to the left end of the bushing spacer bush (14) and the spacer bush (15) in a penetrating way;
the locking assembly (2) comprises an air passage (21), a valve body (22), a rubber sealing sleeve (23), a connecting piece (24), a second sealing ring (25), a valve groove (26), an adjusting knob (27), a fixing nut (28) and an adjusting screw rod (29), wherein the air passage (21) is arranged in an upper side wall inner cavity of the cylinder body (11) and communicated with the left side and the right side of the top end of the air cavity (17), the valve groove (26) is arranged in the upper side wall inner cavity of the cylinder body (11) and communicated with the left air passage and the right air passage (21), the rubber sealing sleeve (23) is sleeved on the outer side of the valve body (22), the rubber sealing sleeve (23) is slidably connected with the valve groove (26) and positioned in the inner cavity of the valve groove (26), the connecting piece (24) is fixedly connected with the valve body (22), the adjusting screw rod (29) is rotatably connected with the connecting piece (24) and positioned at the, the fixed nut (28) is fixedly connected with the cylinder body (11), the adjusting screw rod (29) is in threaded connection with the fixed nut (28) and penetrates through the top end of the fixed nut (28) to the cylinder body (11), and the adjusting knob (27) is fixedly connected with the fixed nut (28).
2. A low friction lockable gas spring as claimed in claim 1, characterized in that: the telescopic assembly (1) further comprises a connecting lug (18), wherein the connecting lug (18) is fixedly connected with the piston rod (13) and the cylinder body (11) and is respectively positioned on the opposite sides of the connecting lug (18) and the cylinder body (11).
3. A low friction lockable gas spring as claimed in claim 1, characterized in that: the telescopic assembly (1) further comprises a damping spring (19), wherein the damping spring (19) is sleeved on the outer side of the piston rod (13) and is located between the bushing spacer sleeve (14) and the piston (12).
4. A low friction lockable gas spring as claimed in claim 3, characterized in that: the maximum compression length of the damping spring (19) is larger than the distance between the left end of the air channel (21) and the bushing spacer (14).
5. A low friction lockable gas spring as claimed in claim 1, characterized in that: the locking assembly (2) further comprises a second sealing ring (25), wherein the second sealing ring (25) is fixedly connected with the connecting piece (24) and sleeved on the outer side of the connecting piece (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920942899.7U CN210196339U (en) | 2019-06-21 | 2019-06-21 | Low-friction lockable gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920942899.7U CN210196339U (en) | 2019-06-21 | 2019-06-21 | Low-friction lockable gas spring |
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| Publication Number | Publication Date |
|---|---|
| CN210196339U true CN210196339U (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920942899.7U Active CN210196339U (en) | 2019-06-21 | 2019-06-21 | Low-friction lockable gas spring |
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| CN (1) | CN210196339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159692A (en) * | 2019-06-21 | 2019-08-23 | 徐州天泓传动设备有限公司 | A kind of low friction can lock gas spring |
-
2019
- 2019-06-21 CN CN201920942899.7U patent/CN210196339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159692A (en) * | 2019-06-21 | 2019-08-23 | 徐州天泓传动设备有限公司 | A kind of low friction can lock gas spring |
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