CN201121676Y - Double-safety sealing gas spring - Google Patents
Double-safety sealing gas spring Download PDFInfo
- Publication number
- CN201121676Y CN201121676Y CNU2007200416277U CN200720041627U CN201121676Y CN 201121676 Y CN201121676 Y CN 201121676Y CN U2007200416277 U CNU2007200416277 U CN U2007200416277U CN 200720041627 U CN200720041627 U CN 200720041627U CN 201121676 Y CN201121676 Y CN 201121676Y
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- piston rod
- annular groove
- piston
- guide sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 239000010985 leather Substances 0.000 claims abstract description 7
- 230000009977 dual effect Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model relates to a double insurance sealing gas spring, comprising a cylinder body (8), a piston (6) and a piston rod (1); wherein, the cylinder wall of the cylinder body (8) is provided with a rolling groove (5) at the position close to an exit side of the piston rod, an internal chamber of the cylinder body (8) arranged between the rolling groove (5) and the exit side of the piston rod is sequentially and tightly provided with a guide sleeve (2), a leather cup (3) and a fixing ring (4); the external edge of the guide sleeve (2) is provided with a ring groove I (2.1) which is internally embedded with an obturating ring I (2.2); the inner hole wall of the guide sleeve (2) is provided with a ring groove III (2.6) which is internally embedded with an obturating ring III (2.7); the middle of the external edge of the guide sleeve (2) is provided with a ring groove II (2.3) which is internally embedded with an obturating ring II (2.4); the bottom of the ring groove II (2.3) is provided with a valve opening (2.5) along the radial direction, and the ring groove II, the obturating ring II and the valve opening form a holding valve structure, the peripheral wall at the piston end of the piston rod (1) is provided with a gas vent (1.1) along the radial direction, and the center of the piston end is provided with a blind hole (1.2) along the axial direction. The sealing gas spring has better sealing effect.
Description
Technical field
The utility model relates to a kind of gas spring, especially relates to a kind of gas spring of dual fail-safe sealing.Belong to the pneumatic metal hardware technical field of sealing.
Background technique
Gas spring is a kind of bullet spare element.General gas spring has the piston and a piston rod that is connected piston that a cylinder body, can slippages in cylinder body.Piston is divided into first working room and one second working room with the cylinder body inner room, and piston rod passes first working room and guides out from an end of cylinder body hermetically, and fill by a kind of gas that is in the pressure two working rooms.During work, external force promotes piston rod, makes piston slippage in cylinder body; When external force was eliminated, the gas in second working room promoted piston reverses direction and moves, and piston rod is resetted.The sealed end of above-mentioned gas spring only is provided with a seal structures, and sealing configuration also just adopts traditional one or multi-channel common seal ring, so its sealability is relatively poor, causes gas leakage easily.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and the gas spring of the better dual fail-safe sealing of a kind of sealability is provided.
The purpose of this utility model is achieved in that a kind of gas spring of dual fail-safe sealing, this gas spring has the cylinder body of a sealing, the cylinder body inner room be provided with one can slippage in cylinder body piston and a piston rod that connects described piston, described piston is divided into one first working room and one second working room with the cylinder body inner room, described piston rod passes first working room and guides out from an end of cylinder body hermetically, fill by a kind of gas that is in the pressure described first working room and second working room, be provided with a slot rolling near piston rod Outlet place on the casing wall of described cylinder body, cylinder body inner room between slot rolling and the piston rod Outlet closely is provided with a guide sleeve successively, a leather cup and a retaining ring, guide sleeve is arranged on adjacent piston rod Outlet, retaining ring is arranged on adjacent slot rolling place, described guide sleeve is provided with an annular groove I near the outer rim of piston rod Outlet, set seal ring I in the annular groove I, guide sleeve is provided with an annular groove III away from the inner hole wall of piston rod Outlet, set seal ring III in the annular groove III, be provided with an annular groove II in the middle of the guide sleeve outer rim, be equipped with a seal ring II in the annular groove II, annular groove II bottom radially offers a valve opening, annular groove II, seal ring II and valve opening constitute one-way valve structures so that unidirectionally inflate in cylinder body, guide sleeve and leather cup constitute the dual fail-safe sealing configuration, radially offer a gas port on the piston end periphery wall of described piston rod, the piston end central shaft is to offering a blind hole, and this blind hole is connected with described gas port.
The gas spring of the utility model dual fail-safe sealing has adopted one-way cock air inlet and dual fail-safe sealing configuration, so sealability is better.
Description of drawings
Fig. 1 is the structural representation of the utility model when in running order.
Fig. 2 is the structural representation of the utility model in a state of nature the time.
Among the figure: piston rod 1, guide sleeve 2, leather cup 3, retaining ring 4, slot rolling 5, piston 6, gas 7, cylinder body 8, block 9; Gas port 1.1, blind hole 1.2, annular groove I 2.1, seal ring I 2.2, annular groove II 2.3, seal ring II 2.4, valve opening 2.5, annular groove III2.6, seal ring III2.7, seal ring IV6.1, first working room 8.1, second working room 8.2.
Embodiment
Referring to Fig. 1, the utility model relates to a kind of gas spring of dual fail-safe sealing, this gas spring has the cylinder body 8 of a sealing, these cylinder body 8 inner rooms by one can slippage in cylinder body piston 6 be divided into one first working room 8.1 and one second working room 8.2.The outer rim of piston 6 is equipped with seal ring IV6.1 one, and the outer rim of floating ring 8 is equipped with two road seal ring V8.1.
This gas spring has a piston rod 1 of a piston, this piston rod 1 passes first working room 8.1 and guides out from an end of cylinder body 8 hermetically, radially offer a gas port 1.1 on the piston end periphery wall of piston rod 1, the piston end central shaft is to offering a blind hole 1.2, blind hole 1.2 is connected with described gas port 1.1, and wherein fill by a kind of gas 7 that is in the pressure first working room 8.1 and second working room 8.2.
Be provided with a slot rolling 5 near piston rod Outlet place on these cylinder body 8 casing walls, closely be provided with a guide sleeve 2, a leather cup 3 and a retaining ring 4 in the cylinder body 8 between slot rolling 5 and the piston rod Outlet successively, guide sleeve 2 is arranged on adjacent piston rod Outlet, retaining ring 4 is arranged on adjacent slot rolling 5 places, and the piston rod Outlet of cylinder body closes up.
This guide sleeve 2 is provided with an annular groove I 2.1 near the outer rim of piston rod Outlet, set seal ring I 2.2 in the annular groove I2.1, guide sleeve 2 is provided with an annular groove III2.6 away from the inner hole wall of piston rod Outlet, set seal ring III2.7 in the annular groove III2.6, be provided with an annular groove II2.3 in the middle of the outer rim of guide sleeve 2, be equipped with a seal ring II2.4 in the annular groove II2.3, annular groove II2.3 bottom radially offers a valve opening 2.5, and annular groove II2.3, seal ring II2.4 and valve opening 2.5 constitute an one-way valve.Gas enters valve opening 2.5 by the slit between piston rod 1 and guide sleeve 2 endoporus, slit between valve opening 2.5 and seal ring II 2.4 enters annular groove II 2.3, slit between the slit between the slit between guide sleeve 2 outer rims and cylinder body 8 casing walls, leather cup 3 outer lips and cylinder body 8 casing walls and retaining ring 4 and cylinder body 8 casing walls enters first working room 8.1 again, and gas port 1.1, the blind hole 1.2 through the piston rod piston end enters second working room 8.2 again.
Described cylinder body 8 the other end be provided with cylinder body 8 fixed block 9, this blocks and does not establish breather check valve on 9.
During work, external force promotes piston rod, makes piston slippage in cylinder body, and as Fig. 2, when external force was eliminated, the gas in second working room promoted piston reverses direction and moves, and piston rod is resetted, as Fig. 1.
Claims (2)
1, a kind of gas spring of dual fail-safe sealing, this gas spring has the cylinder body (8) of a sealing, cylinder body (8) inner room be provided with one can slippage in cylinder body piston (6) and a piston rod (1) that connects described piston, described piston (6) is divided into one first working room (8.1) and one second working room (8.2) with cylinder body (8) inner room, described piston rod (1) passes first working room (8.1) and guides out from an end of cylinder body (8) hermetically, fill by a kind of gas (7) that is in the pressure described first working room (8.1) and second working room (8.2), it is characterized in that: be provided with a slot rolling (5) near piston rod Outlet place on the casing wall of described cylinder body (8), cylinder body (8) inner room between slot rolling (5) and the piston rod Outlet closely is provided with a guide sleeve (2) successively, a leather cup (3) and a retaining ring (4), guide sleeve (2) is arranged on adjacent piston rod Outlet, retaining ring (4) is arranged on adjacent slot rolling (5) and locates, described guide sleeve (2) is provided with an annular groove I (2.1) near the outer rim of piston rod Outlet, set seal ring I (2.2) in the annular groove I (2.1), guide sleeve (2) is provided with an annular groove III (2.6) away from the inner hole wall of piston rod Outlet, set seal ring III (2.7) in the annular groove III (2.6), be provided with an annular groove II (2.3) in the middle of guide sleeve (2) outer rim, be equipped with a seal ring II (2.4) in the annular groove II (2.3), annular groove II (2.3) bottom radially offers a valve opening (2.5), annular groove II (2.3), seal ring II (2.4) and valve opening (2.5) constitute one-way valve structures, radially offer a gas port (1.1) on the piston end periphery wall of described piston rod (1), the piston end central shaft is to offering a blind hole (1.2), and this blind hole (1.2) is connected with described gas port (1.1).
2, the gas spring of a kind of dual fail-safe sealing according to claim 1 is characterized in that: described cylinder body (8) the other end be provided with and fixed the blocking of cylinder body (8) (9), this blocks and does not establish breather check valve on (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200416277U CN201121676Y (en) | 2007-11-26 | 2007-11-26 | Double-safety sealing gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200416277U CN201121676Y (en) | 2007-11-26 | 2007-11-26 | Double-safety sealing gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121676Y true CN201121676Y (en) | 2008-09-24 |
Family
ID=40008903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200416277U Expired - Fee Related CN201121676Y (en) | 2007-11-26 | 2007-11-26 | Double-safety sealing gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121676Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536743A (en) * | 2012-03-12 | 2012-07-04 | 江苏锡压石化装备有限公司 | Two-way sealing structure for industrial vertical reciprocating compressor |
-
2007
- 2007-11-26 CN CNU2007200416277U patent/CN201121676Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536743A (en) * | 2012-03-12 | 2012-07-04 | 江苏锡压石化装备有限公司 | Two-way sealing structure for industrial vertical reciprocating compressor |
| CN102536743B (en) * | 2012-03-12 | 2014-07-30 | 江苏锡压石化装备有限公司 | Two-way sealing structure for industrial vertical reciprocating compressor |
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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: 20080924 Termination date: 20101126 |