CN201193666Y - Gas tension spring with air feeding in center - Google Patents
Gas tension spring with air feeding in center Download PDFInfo
- Publication number
- CN201193666Y CN201193666Y CNU2008200308794U CN200820030879U CN201193666Y CN 201193666 Y CN201193666 Y CN 201193666Y CN U2008200308794 U CNU2008200308794 U CN U2008200308794U CN 200820030879 U CN200820030879 U CN 200820030879U CN 201193666 Y CN201193666 Y CN 201193666Y
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- piston
- cylinder body
- piston rod
- working room
- extension spring
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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a gaseous extension spring, the center of which is for air entering, and the extension spring is provided with a cylinder body (6) and a piston rod (1). A guide sleeve (2), a leather bowl (3), a fixed ring (4) and an inner lining cylinder (5) are tightly arranged in the cylinder body (6) in order; a blind hole (7.4) is arranged on a piston (7) in a center axial direction; the outer edge of the piston (7) is provided with a ring groove (7.1) which is arranged on one side of the piston (7) near to a first working room (A); the ring groove (7.1) is embedded interiorly with a sealing ring III (7.2); the bottom of the ring groove (7.1) is radially provided with a valve hole (7.3) which is communicated with the blind hole (7.4); the valve hole (7.3), the ring groove (7.1) and the sealing ring III (7.2) form an inverted valve of the piston; an aeration hole (1.1) is arranged on the cylinder rod (1) in the center axial direction, which is communicated with the blind hole (7.4) at the piston (7)center; the other end of the cylinder body (6) is provided with a stop plug (8) fixedly connected with the cylinder body (6); the stop plug (8) is centrally and radially provided with a venthole (8.1). The utility model has larger tension and expansion stroke, and long service life.
Description
Technical field
The utility model relates to a kind of gas extension spring, especially relates to the gas extension spring of a kind of center air inlet.Belong to the pneumatic metal hardware technical field of sealing.
Background technique
Extension spring is a kind of bullet spare element.Extension spring after Overheating Treatment forms, is a kind of mechanical type spring structure by the Spring Steel Wire coiling.Because the steel wire diameter of the spring of such extension spring can not be done very greatly, so the pulling force of extension spring and flexible stroke are all less.When spring stress was big, easy deformation in drawing process repeatedly can't return to original state after long-term the use, and working life is short.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and the gas extension spring of all bigger center air inlet of a kind of pulling force and flexible stroke is provided.
The purpose of this utility model is achieved in that the gas extension spring of a kind of center air inlet, it is characterized in that: described gas extension spring has the cylinder body of a sealing, the cylinder body inner room can be divided into one first working room and one second working room by the piston of slippage by one in cylinder body, sealing gas in first working room with certain pressure intensity, second working room communicates with atmosphere
At the central shaft of piston to offering a blind hole; This blind hole places close first operating room one side of piston; Be provided with an annular groove on the outer rim of piston; This annular groove is arranged at one side near first operating room of piston; Set sealing ring III in the annular groove; The annular groove bottom radially offers a valve opening; Valve opening is connected with blind hole; Valve opening, annular groove and sealing ring III consist of a check valve of piston; The outer rim of piston is equipped with sealing ring IV; Sealing circle IV is arranged at one side, close second operating room of piston
This gas extension spring has a piston rod of a piston, and this piston rod passes first working room and guides out from an end of cylinder body hermetically, and the central shaft of piston rod is to offering an air-filled pore, and air-filled pore is connected with the blind hole at described piston center,
Be provided with a slot rolling near piston rod Outlet place on the described cylinder body casing wall, closely be provided with a guide sleeve, a leather cup and a retaining ring in the cylinder body between slot rolling and the piston rod Outlet successively, guide sleeve is arranged on adjacent piston rod Outlet, retaining ring is arranged on a side of adjacent slot rolling, be provided with an inside lining sleeve in the cylinder body of slot rolling opposite side
The other end of described cylinder body is provided with and fixed the blocking of cylinder body, and this blocks and offers vent vertically.
The utility model adopts gas extension spring structure, can come the size of control gaseous tension spring tension by the pressure of injecting gas, so pulling force and flexible stroke are all bigger, can not be out of shape in the drawing process repeatedly, can return to original state, long service life fully after long-term the use.
Description of drawings
Fig. 1 is the structural representation of gas extension spring in a state of nature time of the utility model center air inlet.
Fig. 2 is the structural representation of the gas extension spring of the utility model center air inlet when in running order.
Among the figure: piston rod 1, guide sleeve 2, leather cup 3, retaining ring 4, inside lining sleeve 5, cylinder body 6, piston 7, block 8; Air-filled pore 1.1, seal ring I2.1, seal ring II2.2, slot rolling 6.1, gas 6.2, annular groove 7.1, seal ring III7.2, valve opening 7.3, blind hole 7.4, seal ring IV7.5, vent 8.1; First A of working room, second B of working room.
Embodiment
Referring to Fig. 1, the utility model relates to the gas extension spring of a kind of center air inlet, this gas extension spring has the cylinder body 6 of a sealing, cylinder body 6 inner rooms by one can slippage in cylinder body piston 7 be divided into one first A of working room and one second B of working room, sealing in first A of working room have certain pressure intensity gas 6.2 (nitrogen), second B of working room communicates with atmosphere.
At the central shaft of piston 7 to offering a blind hole 7.4, this blind hole 7.4 places close first A of working room, one side of piston 7, the outer rim of piston 7 is provided with an annular groove 7.1, this annular groove 7.1 is arranged at one side near first A of working room of piston 7, set seal ring III7.2 in the annular groove 7.1, annular groove 7.1 bottoms radially offer a valve opening 7.3, and valve opening 7.3 is connected with blind hole 7.4, and valve opening 7.3, annular groove 7.1 and seal ring III7.2 constitute an one-way valve of piston.The outer rim of piston 7 is equipped with seal ring IV7.5 one, and sealing circle IV7.5 is arranged at close second B of working room one side of piston 7.
This gas extension spring has a piston rod 1 of a piston, and this piston rod 1 passes first A of working room and guides out from an end of cylinder body 6 hermetically.The central shaft of piston rod 1 is to offering an air-filled pore 1.1, and air-filled pore 1.1 is connected with the blind hole 7.4 at described piston 7 centers, piston rod 1 and piston 7 concrete mutuallies (welding).
Be provided with a slot rolling 6.1 near piston rod Outlet place on these cylinder body 6 casing walls, closely be provided with a guide sleeve 2, a leather cup 3 and a retaining ring 4 in the cylinder body 6 between slot rolling 6.1 and the piston rod Outlet successively, guide sleeve 2 is arranged on adjacent piston rod Outlet, retaining ring 4 is arranged on a side of adjacent slot rolling 6.1, adjacent slot rolling 6.1 is provided with an inside lining sleeve 5 in the cylinder body 6 of the opposite side of slot rolling 6.1, inside lining sleeve 5 adopts drive fit with cylinder body 6 inwalls, and cylinder body closes up at the piston rod Outlet.Do not establish breather check valve on the guide sleeve 2.This guide sleeve 2 is equipped with a seal ring I2.1 near on the outer rim of piston rod Outlet, is equipped with a seal ring II2.2 on the inner hole wall of guide sleeve 2 away from the piston rod Outlet.
During inflation, gas enters valve opening 7.3 by the blind hole 7.4 that the axial air-filled pore 1.1 at piston rod 1 center enters piston 7 centers by blind hole 7.4, and the slit between valve opening 7.3 and seal ring III7.2 enters annular groove 7.1, enters first A of working room again.
The other end of described cylinder body 6 be provided with cylinder body 6 fixed (welding) block 8, this blocks 8 and offers vent 8.1 vertically, air enters piston 7 and blocks between 8 second B of working room that forms through this vent 8.1.
During work, external force pulling piston rod makes piston slippage in cylinder body, gas pressure in first A of working room rises, gas is compressed, and ambient air is entered in second B of working room by the vent 8.1 that blocks 8 centers, runs into inside lining sleeve until piston and stops, as Fig. 2, after external force was eliminated, the gas in first A of working room promoted piston reverses direction and moves, and piston rod is resetted, air in second working room is discharged by the vent 8.1 that blocks 8 centers, as Fig. 1.
Claims (4)
1. the gas extension spring of a center air inlet, it is characterized in that: described gas extension spring has the cylinder body (6) of a sealing, cylinder body (6) inner room by one can slippage in cylinder body piston (7) be divided into one first working room (A) and one second working room (B), sealing gas (6.2) nitrogen in first working room (A) with certain pressure intensity, (B) communicates with atmosphere in second working room, at the central shaft of piston (7) to offering a blind hole (7.4), this blind hole (7.4) places close first working room (A) side of piston (7), the outer rim of piston (7) is provided with an annular groove (7.1), this annular groove (7.1) is arranged at one side near first working room (A) of piston (7), set seal ring III (7.2) in the annular groove (7.1), annular groove (7.1) bottom radially offers a valve opening (7.3), valve opening (7.3) is connected with blind hole (7.4), valve opening (7.3), annular groove (7.1) and seal ring III (7.2) constitute an one-way valve of piston, the outer rim of piston (7) is equipped with seal ring IV (7.5), sealing circle IV (7.5) be arranged at piston (7) near second working room (B) on one side
This gas extension spring has a piston rod (1) of a piston, this piston rod (1) passes first working room (A) and guides out from an end of cylinder body (6) hermetically, the central shaft of piston rod (1) is to offering an air-filled pore (1.1), air-filled pore (1.1) is connected with the blind hole (7.4) at described piston (7) center
Be provided with a slot rolling (6.1) near piston rod Outlet place on described cylinder body (6) casing wall, closely be provided with a guide sleeve (2), a leather cup (3) and a retaining ring (4) in the cylinder body (6) between slot rolling (6.1) and the piston rod Outlet successively, guide sleeve (2) is arranged on adjacent piston rod Outlet, retaining ring (4) is arranged on a side of adjacent slot rolling (6.1), be provided with an inside lining sleeve (5) in the cylinder body (6) of slot rolling (6.1) opposite side
The other end of described cylinder body (6) is provided with and fixed the blocking of cylinder body (6) (8), and this blocks (8) central shaft to offering vent (8.1).
2. the gas extension spring of a kind of center air inlet according to claim 1, it is characterized in that: described guide sleeve is not established breather check valve on (2), this guide sleeve (2) is equipped with a seal ring I (2.1) near on the outer rim of piston rod Outlet, is equipped with a seal ring II (2.2) on the inner hole wall of guide sleeve (2) away from the piston rod Outlet.
3. the gas extension spring of a kind of center air inlet according to claim 1 is characterized in that: described cylinder body (6) closes up at the piston rod Outlet.
4. the gas extension spring of a kind of center air inlet according to claim 1 is characterized in that: described piston rod (1) and piston (7) concrete mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200308794U CN201193666Y (en) | 2008-01-14 | 2008-01-14 | Gas tension spring with air feeding in center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200308794U CN201193666Y (en) | 2008-01-14 | 2008-01-14 | Gas tension spring with air feeding in center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193666Y true CN201193666Y (en) | 2009-02-11 |
Family
ID=40393202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200308794U Expired - Fee Related CN201193666Y (en) | 2008-01-14 | 2008-01-14 | Gas tension spring with air feeding in center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193666Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653683A (en) * | 2013-11-22 | 2015-05-27 | 丹阳市中远车灯有限公司 | Air damper |
| CN104676243A (en) * | 2015-03-24 | 2015-06-03 | 隆昌山川精密焊管有限责任公司 | Classified gas-inflating method for gas spring and tool for method |
| CN106182703A (en) * | 2016-08-30 | 2016-12-07 | 江苏维达机械有限公司 | A kind of injection blow molding machine core rod push pedal maintaining body |
-
2008
- 2008-01-14 CN CNU2008200308794U patent/CN201193666Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653683A (en) * | 2013-11-22 | 2015-05-27 | 丹阳市中远车灯有限公司 | Air damper |
| CN104676243A (en) * | 2015-03-24 | 2015-06-03 | 隆昌山川精密焊管有限责任公司 | Classified gas-inflating method for gas spring and tool for method |
| CN106182703A (en) * | 2016-08-30 | 2016-12-07 | 江苏维达机械有限公司 | A kind of injection blow molding machine core rod push pedal maintaining body |
| CN106182703B (en) * | 2016-08-30 | 2018-05-01 | 江苏维达机械有限公司 | A kind of injection blow molding machine core rod push plate holding mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20110114 |