CN114135614A - Self-locking type air spring - Google Patents
Self-locking type air spring Download PDFInfo
- Publication number
- CN114135614A CN114135614A CN202111569276.8A CN202111569276A CN114135614A CN 114135614 A CN114135614 A CN 114135614A CN 202111569276 A CN202111569276 A CN 202111569276A CN 114135614 A CN114135614 A CN 114135614A
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- China
- Prior art keywords
- piston rod
- cylinder
- spacing arch
- self
- piston
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a self-locking gas spring. The device comprises a cylinder barrel, a piston rod is connected at the opening of the cylinder barrel in a sliding manner, a piston is screwed at the free end of the piston rod positioned in the cylinder barrel, a guide rod coaxial with the piston rod is arranged at the bottom in the cylinder barrel, a limiting block is arranged at the free end of the guide rod facing the opening of the cylinder barrel, a long strip-shaped sliding cavity is arranged on the piston rod facing the guide rod, a first limiting bulge is arranged at the bottom of the sliding cavity, a second limiting bulge and a third limiting bulge are arranged at the opening of the sliding cavity at intervals, the limiting block is arranged in the sliding cavity between the second limiting bulge and the third limiting bulge, and the air spring can be quickly and manually self-locked due to the matching arrangement of the limiting block, the guide rod and the limiting bulges, so that the locking fault of the air spring is prevented when in use, the inconvenience on position fixing is brought to a user, and the device can be applied to industrial production, has strong practicability.
Description
Technical Field
The invention belongs to the technical field of gas springs, and particularly relates to a self-locking gas spring.
Background
The air spring is a part capable of realizing functions of supporting, buffering, braking, height and angle adjustment and the like, is mainly applied to positions such as a cover cap, a door and the like in engineering machinery, has different structures and types and is used for meeting different use requirements, and the engineering machinery mainly uses a compression type air spring which mainly plays a supporting role, has only two working positions, namely a shortest working position and a longest working position, cannot be automatically stopped in a stroke, is a self-locking type air spring, is mostly applied to medical instruments, can be stopped at any position in the stroke by means of some releasing mechanisms, and has a large locking force after being stopped.
Original self-locking type air spring is when using, because of the long-time use of air spring, the locking force that may appear weakens, makes the air spring locking trouble appear when using, brings the inconvenience in the rigidity for the user.
Disclosure of Invention
The invention aims to solve the technical problem that when an existing self-locking gas spring is used, locking force is possibly weakened due to long-time use of the gas spring, so that a locking fault occurs when the gas spring is used, and the self-locking gas spring is provided for overcoming the defects.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a from locking-type air spring, including the cylinder, cylinder opening part sliding connection has the piston rod, has connect the piston on being located the piston rod free end in the cylinder soon, the bottom is provided with the guide bar coaxial with the piston rod in the cylinder, is provided with the stopper towards cylinder open-ended guide bar free end, has seted up long banding slip chamber on the piston rod that the guide bar is just right, is located the slip chamber bottom and is provided with first spacing arch, is located the spacing arch of slip chamber opening part interval and is provided with spacing arch of second and the spacing arch of third, the stopper is located the slip intracavity setting between the spacing arch of second and the spacing arch of third.
As preferred scheme, the free end of the piston rod outside the cylinder is hinged with a connector, the connector and the outer surface of the piston rod are both provided with connecting blocks, and the two connecting blocks are connected through a pin shaft.
As the preferred scheme, the stopper is vertical bar piece setting, first spacing arch, the spacing arch of second and the spacing arch of third are two sets of rectangular blocks that set up in opposite directions, leave the clearance that the stopper passes through between two rectangular blocks.
As the preferred scheme, the seal groove has been seted up on the piston surface, all scarf joint has the sealing washer in the seal groove.
As the preferred scheme, the bottom outside the cylinder barrel is connected with a hinged joint, and the free end of the hinged joint is screwed with an earring.
When the piston rod needs to extend out of the cylinder, the piston rod is rotated to enable the piston rod to rotate relative to the piston, the gap between the two rectangular blocks in the first limiting protrusion is opposite to the limiting block, the limiting block passes through the first limiting protrusion to move along the sliding cavity, and when the piston rod moves to a position between the second limiting protrusion and the third limiting protrusion, the piston rod is rotated reversely to enable the limiting block not to pass through the gap.
Compared with the prior art, the invention has the beneficial effects that: because stopper, guide bar and the protruding cooperation setting of each spacing for this air spring can be fast manual carry out the auto-lock, prevents that the air spring from locking the trouble appearing when using, brings the inconvenience on the rigidity for the user, and the device can apply to in the industrial production, has very strong practicality.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a limiting block in the invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Fig. 4 is a partially enlarged view of fig. 1 at B.
In the figure: 1 cylinder, 2 piston rods, 3 pistons, 4 guide bars, 5 stoppers, 6 sliding cavities, 7 first spacing archs, 8 second spacing archs, 9 third spacing archs, 10 connectors, 11 connecting blocks, 12 round pin axles, 13 articulated joints, 14 earrings.
Detailed Description
The technical solution of the present application will be further described and explained with reference to the accompanying drawings and embodiments.
As shown in fig. 1-4, for a self-locking air spring, including cylinder 1, 1 opening part sliding connection of cylinder has piston rod 2, it has piston 3 to connect soon on 2 free ends of piston rod that are located cylinder 1, the bottom is provided with guide bar 4 coaxial with piston rod 2 in cylinder 1, 4 free ends of guide bar towards 1 open-ended guide bar of cylinder are provided with stopper 5, long banding slip chamber 6 has been seted up on 2 just to piston rod to guide bar 4, it is provided with first spacing arch 7 to be located the bottom of slip chamber 6, it is provided with spacing arch 8 of second and the spacing arch 9 of third to be located 6 opening part intervals in slip chamber, stopper 5 is located the slip intracavity 6 settings between spacing arch 8 of second and the spacing arch 9 of third. The free end of the piston rod 2 positioned outside the cylinder barrel 1 is hinged with a connector 10, the outer surfaces of the connector 10 and the piston rod 2 are respectively provided with a connecting block 11, and the two connecting blocks 11 are connected through a pin shaft 12. The connection head 10 is arranged to prevent rotation of the piston rod 2 relative to the connected outer part when changing the self-locking condition. Stopper 5 is vertical bar piece setting, and first spacing arch 7, the spacing arch 8 of second and the spacing arch 9 of third are two sets of rectangular blocks that set up in opposite directions, leave the clearance that stopper 5 passes through between two rectangular blocks. The outer surface of the piston 3 is provided with a sealing groove, and a sealing ring is embedded in the sealing groove. The outer bottom of the cylinder barrel 1 is connected with a hinge joint 13, and the free end of the connector 10 is screwed with an earring 14.
During operation, when the piston rod 2 needs to stretch out of the cylinder barrel 1, the piston rod 2 is rotated, the piston rod 2 is enabled to rotate relative to the piston 3, the gap between the two rectangular blocks in the first limiting protrusion 7 is enabled to be opposite to the limiting block 5, the limiting block 5 is enabled to pass through the first limiting protrusion 7 and move along the sliding cavity 6, when the piston rod moves to a position between the second limiting protrusion 8 and the third limiting protrusion 9, the piston rod 2 is rotated in a reverse direction, the limiting block 5 is enabled to be incapable of passing through the gap, otherwise, when the piston rod 2 needs to be retracted into the cylinder barrel 1, the piston rod 2 is rotated, the gap between the second limiting protrusion 8 and the third limiting protrusion 9 is enabled to be opposite to the limiting block 5, the limiting block 5 passes through the second limiting protrusion 8 and moves along the sliding cavity 6, when the piston rod 2 moves to a position between the bottom of the first limiting protrusion 7 and the sliding cavity 6, the piston rod 2 is rotated in a reverse direction, and locking of the piston rod 2 is completed.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (5)
1. A self-locking gas spring is characterized in that: including the cylinder, cylinder opening part sliding connection has the piston rod, has connect the piston on being located the piston rod free end in the cylinder soon, the bottom is provided with the guide bar coaxial with the piston rod in the cylinder, is provided with the stopper towards cylinder open-ended guide bar free end, has seted up long banding slip chamber on the just right piston rod of guide bar, is located the slip chamber bottom and is provided with first spacing arch, is located the interval of slip chamber opening part and is provided with spacing arch of second and the spacing arch of third, the stopper is located the slip intracavity setting between the spacing arch of second and the spacing arch of third.
2. The self-locking gas spring as claimed in claim 1, wherein: the free end of the piston rod positioned outside the cylinder is hinged with a connector, the connector and the outer surface of the piston rod are both provided with connecting blocks, and the two connecting blocks are connected through a pin shaft.
3. The self-locking gas spring as claimed in claim 2, wherein: the stopper is vertical bar piece setting, first spacing arch, the spacing arch of second and the spacing arch of third are two sets of rectangular blocks that set up in opposite directions, leave the clearance that the stopper passes through between two rectangular blocks.
4. A self-locking gas spring as claimed in claim 3, wherein: the piston is characterized in that a sealing groove is formed in the outer surface of the piston, and a sealing ring is embedded in the sealing groove.
5. A self-locking gas spring according to any one of claims 1-4, characterized in that: the outer bottom of cylinder is connected with the articulated joint, the connector free end has connect the earrings soon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111569276.8A CN114135614A (en) | 2021-12-21 | 2021-12-21 | Self-locking type air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111569276.8A CN114135614A (en) | 2021-12-21 | 2021-12-21 | Self-locking type air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114135614A true CN114135614A (en) | 2022-03-04 |
Family
ID=80383218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111569276.8A Pending CN114135614A (en) | 2021-12-21 | 2021-12-21 | Self-locking type air spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114135614A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01128038U (en) * | 1988-02-25 | 1989-08-31 | ||
| DE3826862A1 (en) * | 1988-08-08 | 1990-02-15 | Stabilus Gmbh | Pneumatic spring with intermediate locking |
| JPH0233944U (en) * | 1988-08-29 | 1990-03-05 | ||
| JPH0274633U (en) * | 1988-11-25 | 1990-06-07 | ||
| US5133245A (en) * | 1991-04-12 | 1992-07-28 | P. L. Porter Company | Continuously adjustable stroke limiter for hydraulic positioner |
| JPH0687742U (en) * | 1993-05-28 | 1994-12-22 | 株式会社ユニシアジェックス | gas spring |
| FR2719641A1 (en) * | 1994-05-06 | 1995-11-10 | Peugeot | Gas support strut for rear facing door of hatch back car |
| FR2849680A1 (en) * | 2003-01-06 | 2004-07-09 | Peugeot Citroen Automobiles Sa | Tail gate opening and closing device for vehicle, has spacer forming bump at extension position of hydraulic jack, and displaced between extension and contraction positions of jack |
| US20090020005A1 (en) * | 2007-07-18 | 2009-01-22 | Stabilus Gmbh | Piston-cylinder unit |
| CN101370705A (en) * | 2006-03-02 | 2009-02-18 | 古斯塔夫·马根韦尔斯有限及两合公司 | Spring deflection adjustment |
| US20090236781A1 (en) * | 2008-03-20 | 2009-09-24 | Stabilus Gmbh | Lockable Piston-Cylinder Unit |
| CN105697632A (en) * | 2016-04-13 | 2016-06-22 | 常州气弹簧有限公司 | Stroke-adjustable air spring |
| CN108505854A (en) * | 2018-05-07 | 2018-09-07 | 张卫 | Implicit form gag lever post |
| CN209671502U (en) * | 2018-12-28 | 2019-11-22 | 陕西中航气弹簧有限责任公司 | A kind of gas spring with stopper |
| CN209705149U (en) * | 2019-01-24 | 2019-11-29 | 扬州德威尔汽车减震器有限公司 | A kind of inflated hydraulic damper |
| CN209909053U (en) * | 2019-04-29 | 2020-01-07 | 常州气弹簧有限公司 | Stroke-controllable gas spring |
| CN210240425U (en) * | 2019-07-03 | 2020-04-03 | 常州市东力机械有限公司 | Locking means for nitrogen gas spring |
-
2021
- 2021-12-21 CN CN202111569276.8A patent/CN114135614A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01128038U (en) * | 1988-02-25 | 1989-08-31 | ||
| DE3826862A1 (en) * | 1988-08-08 | 1990-02-15 | Stabilus Gmbh | Pneumatic spring with intermediate locking |
| JPH0233944U (en) * | 1988-08-29 | 1990-03-05 | ||
| JPH0274633U (en) * | 1988-11-25 | 1990-06-07 | ||
| US5133245A (en) * | 1991-04-12 | 1992-07-28 | P. L. Porter Company | Continuously adjustable stroke limiter for hydraulic positioner |
| JPH0687742U (en) * | 1993-05-28 | 1994-12-22 | 株式会社ユニシアジェックス | gas spring |
| FR2719641A1 (en) * | 1994-05-06 | 1995-11-10 | Peugeot | Gas support strut for rear facing door of hatch back car |
| FR2849680A1 (en) * | 2003-01-06 | 2004-07-09 | Peugeot Citroen Automobiles Sa | Tail gate opening and closing device for vehicle, has spacer forming bump at extension position of hydraulic jack, and displaced between extension and contraction positions of jack |
| CN101370705A (en) * | 2006-03-02 | 2009-02-18 | 古斯塔夫·马根韦尔斯有限及两合公司 | Spring deflection adjustment |
| US20090020005A1 (en) * | 2007-07-18 | 2009-01-22 | Stabilus Gmbh | Piston-cylinder unit |
| US20090236781A1 (en) * | 2008-03-20 | 2009-09-24 | Stabilus Gmbh | Lockable Piston-Cylinder Unit |
| CN105697632A (en) * | 2016-04-13 | 2016-06-22 | 常州气弹簧有限公司 | Stroke-adjustable air spring |
| CN108505854A (en) * | 2018-05-07 | 2018-09-07 | 张卫 | Implicit form gag lever post |
| CN209671502U (en) * | 2018-12-28 | 2019-11-22 | 陕西中航气弹簧有限责任公司 | A kind of gas spring with stopper |
| CN209705149U (en) * | 2019-01-24 | 2019-11-29 | 扬州德威尔汽车减震器有限公司 | A kind of inflated hydraulic damper |
| CN209909053U (en) * | 2019-04-29 | 2020-01-07 | 常州气弹簧有限公司 | Stroke-controllable gas spring |
| CN210240425U (en) * | 2019-07-03 | 2020-04-03 | 常州市东力机械有限公司 | Locking means for nitrogen gas spring |
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