CN201078429Y - Return type lockable gas spring - Google Patents
Return type lockable gas spring Download PDFInfo
- Publication number
- CN201078429Y CN201078429Y CNU2007200457991U CN200720045799U CN201078429Y CN 201078429 Y CN201078429 Y CN 201078429Y CN U2007200457991 U CNU2007200457991 U CN U2007200457991U CN 200720045799 U CN200720045799 U CN 200720045799U CN 201078429 Y CN201078429 Y CN 201078429Y
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- CN
- China
- Prior art keywords
- ring
- piston
- damping
- air spring
- piston rod
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a reset type lockable air spring, which comprises a cylinder barrel, a piston in the cylinder barrel, a piston rod connected with the piston, an end of which penetrates out of the cylinder barrel, a valve core, which is closely installed in the piston rod and a guide sleeve and a sealing ring, which are mounted in the cylinder barrel and sleeved on the piston rod. An oil duct on the piston rod is communicated with an oil duct on the piston. An axial flute, in which a damping ring is mounted, is arranged on the piston. An axial clearance is positioned between the butt of the damping ring and the both butts of the axial flute, and a radial clearance is installed between an internal ring of the damping ring and the bottom of the axial flute. A damping oil groove is arranged on the internal lateral face of the damping ring or on the internal lateral face of the axial flute. An inlet and an outlet of the damping oil groove are respectively positioned on an external ring and the internal ring of the damping ring or on an external ring and an internal ring of the piston. The reset speed of air spring can be reduced by the utility model, and the air spring can automatically reset even the valve core is not opened.
Description
Technical field
The utility model relates to a kind of air spring, especially relates to a kind of return type lockable air spring.
Background technique
Mainly form contain gas and fluid in the cylinder barrel by the piston in cylinder barrel, the cylinder barrel, piston rod and spool etc. for the lockable air spring.Because piston has been occupied the volume in the cylinder barrel, piston rod is pressed in the cylinder barrel during work, and piston is made axial motion extruding fluid in cylinder barrel, and the fluid pressurized gas makes piston reach the working position; After the external force disappearance that is carried on the piston rod, then gas restores and expands, and the gas of expansion promotes fluid and makes piston reset, and piston rod is shifted out, and makes air spring realize compression movement and recovery damped motion.For the locked type air spring, be to move axially by the spool that is arranged in the piston rod, open or close oil duct fast.But in reseting procedure, must control spool at air spring, air spring is resetted, reset speed is too fast on the one hand, has reduced travelling comfort.On the other hand, must air spring be resetted by the control spool.
Summary of the invention
The purpose of this utility model provides and a kind ofly can reduce the air spring reset speed, and can make the automatically reset return type lockable of air spring air spring.
The utility model is that the technological scheme that achieves the above object is: a kind of return type lockable air spring, comprise cylinder barrel, be arranged on the piston in the cylinder barrel, be connected with piston and an end passes the piston rod of cylinder barrel, sealing is installed in the spool in the piston rod, be installed in the cylinder barrel and be sleeved on guide sleeve and seal ring on the piston rod, oil duct on the piston rod communicates with oil duct on the piston, piston is provided with radial groove, damped ring is installed in the radial groove, it is characterized in that: be provided with axial clearance between the end face of described damped ring and the end face of radial groove, be provided with radial clearance between the inner ring of damped ring and the bottom land of radial groove, the inner side surface of damped ring is provided with the damping oil groove, or the inner side surface of radial groove is provided with the damping oil groove, and the import of damping oil groove and outlet lay respectively at the outer ring of damped ring and the outer ring and the inner ring place of inner ring or piston.
After the utility model adopts technique scheme, the damped ring and the radial groove that are installed in the piston radial groove are respectively equipped with axial clearance and radial clearance, and the inner side surface of the inner side surface of damped ring or radial groove is provided with the damping oil groove, therefore when resetting, air spring can arrive damping function, can not only reduce air spring and reply speed, and the raising travelling comfort, even if spool and piston are closed condition, fluid in the upper oil cavitie can enter axial clearance and radial clearance between radial groove and the damped ring by piston head, enter in the lower oil cavitie from the piston outer ring behind the damping oil groove, make air spring can realize automatically reseting.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is further described in detail.
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the structural representation that Fig. 1 is compressive state.
Fig. 3 is the structural representation of damped ring.
Fig. 4 is first kind of structural representation of damping oil slot cross-section.
Fig. 5 is second kind of structural representation of damping oil slot cross-section.
Fig. 6 is the third structural representation of damping oil slot cross-section.
Fig. 7 is the 4th a kind of structural representation of damping oil slot cross-section.
Fig. 8 is an another kind of structural representation of the present utility model.
Fig. 9 is the structural representation that Fig. 8 is compressive state.
Figure 10 is the structural representation of damping ring.
Wherein: 1-piston rod, 1-1-oil duct, 2-spool, 3-cylinder barrel, 4-guide sleeve, 5-seal ring, 6-spacer ring, 7-piston, 7-1-radial groove, 7-2-oil duct, 7-3-damping ring, 8-damped ring, 9-damping oil groove, 10-seal ring, 11-seal ring.
Embodiment
See the return type lockable air spring shown in Fig. 1～3, comprise cylinder barrel 3, piston rod 1, spool 2, piston 7, guide sleeve 4 and seal ring 5, the piston 7 that is connected with piston rod 1 is arranged in the cylinder barrel 3, one end of piston rod 1 passes cylinder barrel 3, spool 2 is installed in the piston rod 1, piston rod 1 is provided with oil duct 1-1, seal ring 10 and seal ring 11 are installed in the oil duct 1-1 both sides of piston rod 1 respectively, make spool 2 and piston rod 1 keep sealing, spool 2 can move axially in piston rod 1, spool 2 the inners are provided with convex shoulder and match with piston 7 end faces, the guide sleeve 4 and the seal ring 5 that are installed in the cylinder barrel 3 are sleeved on the piston rod 1, guide sleeve 4 and seal ring 5 are equipped with metal frame, a side that is preferably in seal ring 5 also is provided with spacer ring 6, seal ring 5, spacer ring 6, piston rod 1 and piston 7 outer side surfaces form upper oil cavitie, and the inner side surface of piston 7 and cylinder barrel 3 form lower oil cavitie, piston rod 1 is provided with oil duct 1-1, the path axle sleeve of piston 7 is provided with oil duct 7-2 and communicates, and this sleeve end is connected in the annular groove on the piston rod 1 piston 7 is connected with piston rod 1, oil duct 7-2 on the piston 7 communicates with oil duct 1-1 on the piston rod 1, by oil duct 7-2 and oil duct 1-1 the fluid in upper oil cavitie and the lower oil cavitie is communicated, piston 7 is provided with radial groove 7-1, damped ring 8 is installed in the radial groove 7-1, be provided with axial clearance between this damped ring 8 and the radial groove 7-1, the inner ring of damped ring 8 then and between the radial groove 7-1 is provided with radial clearance, the inner side surface of damped ring 8 is provided with damping oil groove 9, the import of damping oil groove 9 and outlet lay respectively at the outer ring and the inner ring place of damped ring 8, see shown in Figure 3, this damping oil groove 9 is an annular groove, the cross section of seeing its annular groove of damping oil groove 9 of the present utility model shown in Fig. 4～7 is rectangle or trapezoidal or triangle or circular arc, and the bottom of the outer side surface of this damped ring 8 is provided with the inclined-plane.When air spring resets, damped ring 8 is fitted on the inner side surface of radial groove 7-1, make damping oil groove 9 play damping function, to reduce the speed that air spring is replied, and the raising travelling comfort, even if air spring is resetted fast not operating spool 2, air spring is automatically reset by this damping oil groove 9.
See shown in Fig. 8～10, but be the return type lockable air spring of the another kind of structure of the utility model, basic identical with above-mentioned structure, outside the difference, be provided with damping oil groove 9 on the inner side surface of the radial groove 7-1 of piston 7, the import of this damping oil groove 9 and outlet lay respectively at the outer ring and the inner ring place of piston 7.The utility model is easy for installation, simplify technology, piston 7 can adopt split-type structural, constitute by piston seat and damping ring 7-3, piston seat is provided with shoulder hole, damping ring 7-3 is arranged on the place, large aperture of shoulder hole, the end face of damping ring 7-3 and the aperture of shoulder hole then form radial groove 7-1, owing to be provided with axial clearance between damped ring 8 and the radial groove 7-1, and the inner ring of damped ring 8 then and be provided with radial clearance between the radial groove 7-1, therefore when damped ring 8 is fitted on the inner side surface of radial groove 7-1, make damping oil groove 9 play damping function.
Claims (6)
1. return type lockable air spring, comprise cylinder barrel (3), be arranged on the piston (7) in the cylinder barrel (3), be connected with piston (7) and an end passes the piston rod (1) of cylinder barrel (3), sealing is installed in the spool (2) in the piston rod (1), be installed in the cylinder barrel (3) and be sleeved on guide sleeve (4) and seal ring (5) on the piston rod (1), oil duct (1-1) on the piston rod (1) communicates with oil duct (7-2) on the piston (7), piston (7) is provided with radial groove (7-1), damped ring (8) is installed in the radial groove (7-1), it is characterized in that: be provided with axial clearance between the end face of the end face of described damped ring (8) and radial groove (7-1), be provided with radial clearance between the bottom land of the inner ring of damped ring (8) and radial groove (7-1), the inner side surface of damped ring (8) is provided with damping oil groove (9), or the inner side surface of radial groove (7-1) is provided with damping oil groove (9), and the import of damping oil groove (9) and outlet lay respectively at the outer ring of damped ring (8) and the outer ring and the inner ring place of inner ring or piston (7).
2. return type lockable air spring according to claim 1 is characterized in that: described damping oil groove (9) is an annular groove.
3. return type lockable air spring according to claim 2 is characterized in that: its cross section of annular groove of described damping oil groove (9) is rectangle or trapezoidal or triangle or circular arc.
4. but return type lockable air spring according to claim 1 is characterized in that: the bottom of the outer side surface of described damped ring (8) is provided with the inclined-plane.
5. return type lockable air spring according to claim 1, it is characterized in that: described piston (7) is made of piston seat and damping ring (7-3), piston seat is provided with shoulder hole, damping ring (7-3) is arranged on the place, large aperture of shoulder hole, and the aperture of damping ring (7-3) inner side surface and shoulder hole forms radial groove (7-1).
6. return type lockable air spring according to claim 1 is characterized in that: a side of described seal ring (5) also is provided with spacer ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200457991U CN201078429Y (en) | 2007-09-14 | 2007-09-14 | Return type lockable gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200457991U CN201078429Y (en) | 2007-09-14 | 2007-09-14 | Return type lockable gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078429Y true CN201078429Y (en) | 2008-06-25 |
Family
ID=39570491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200457991U Expired - Fee Related CN201078429Y (en) | 2007-09-14 | 2007-09-14 | Return type lockable gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078429Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207158A (en) * | 2011-05-23 | 2011-10-05 | 扬州市明瑞气弹簧有限公司 | Sealing piece for valve needle of self-locking gas spring |
| CN102213288A (en) * | 2011-05-24 | 2011-10-12 | 扬州市明瑞气弹簧有限公司 | Low-pressure controllable gas spring |
| CN102278407A (en) * | 2011-05-25 | 2011-12-14 | 扬州市明瑞气弹簧有限公司 | Controllable air spring |
-
2007
- 2007-09-14 CN CNU2007200457991U patent/CN201078429Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207158A (en) * | 2011-05-23 | 2011-10-05 | 扬州市明瑞气弹簧有限公司 | Sealing piece for valve needle of self-locking gas spring |
| CN102213288A (en) * | 2011-05-24 | 2011-10-12 | 扬州市明瑞气弹簧有限公司 | Low-pressure controllable gas spring |
| CN102278407A (en) * | 2011-05-25 | 2011-12-14 | 扬州市明瑞气弹簧有限公司 | Controllable air spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Changzhou gas spring Co., Ltd. Assignor: Shi Yuqiu Contract record no.: 2010320000046 Denomination of utility model: Return type lockable gas spring Granted publication date: 20080625 License type: Exclusive License Record date: 20100220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20160914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |