CN203702965U - Stretchable gas spring - Google Patents
Stretchable gas spring Download PDFInfo
- Publication number
- CN203702965U CN203702965U CN201320784238.9U CN201320784238U CN203702965U CN 203702965 U CN203702965 U CN 203702965U CN 201320784238 U CN201320784238 U CN 201320784238U CN 203702965 U CN203702965 U CN 203702965U
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- CN
- China
- Prior art keywords
- piston
- piston rod
- cylinder
- small
- gas
- 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
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Abstract
The utility model discloses a stretchable gas spring. The stretchable gas spring comprises a piston cylinder and a piston, wherein the piston divides the piston cylinder into a gas and oil mixing cylinder and a vacuum cylinder; a small piston rod is arranged at one end of the piston, which faces the gas and oil mixing cylinder; a large piston rod is arranged at one end of the piston, which faces the vacuum cylinder; the piston, the small piston rod and the large piston are positioned on an identical axial lead; a small hole is formed in the piston; the small piston rod and the large piston rod are sleeved with guide rings; the guide rings are sealed; a connector is arranged at the end part of each of the small piston rod and the large piston rod; inert gas is introduced into the gas and oil mixing cylinder. The stretchable gas spring can be widely applied to vehicle doors and train folding seats, is safe and reliable, and fills the application gap of traditional compression gas springs.
Description
Technical field
The utility model relates to a kind of air spring, refers more particularly to a kind of stretching air spring.
Background technique
Air spring is a kind of industrial accessory that can play the effects such as support, buffering, braking, principle is in airtight piston cylinder, to be filled with inert gas or gas mixture, make air pressure in cylinder higher than several times, barometric pressure or tens times, utilize the difference in areas of piston and piston rod to produce pressure difference to realize the motion of piston rod, have slowly mobile with respect to common spring, easily control, can restorable advantage after long-time compressed or drawing.At present, domestic use is all compression type air spring.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of stretching air spring.
In order to solve the problems of the technologies described above, the utility model provides a kind of stretching air spring, be provided with piston cylinder and piston, piston cylinder is divided into air-fuel mixture cylinder and vacuum reservoir by piston, described piston area is provided with small piston rod to air-fuel mixture cylinder one end, piston area is provided with large piston rod to vacuum reservoir one end, and piston, small piston rod, large piston rod are positioned on same shaft axis, and described piston is provided with aperture.
As further improvement of the utility model, described small piston rod and large piston rod cover have guide collar, and guide collar seals.
As further improvement of the utility model, described piston cylinder and small piston rod end are respectively equipped with a joint.
As further improvement of the utility model, in described air-fuel mixture cylinder, be filled with inert gas.
Adopt said structure, its beneficial effect is: this stretching air spring can be widely used in car door, and jack knifing seat is safe and reliable, has made up the application vacancy of conventional compression formula air spring.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model stretching air spring.
In figure: 1-piston cylinder, 2-piston, 3-air-fuel mixture cylinder, 4-vacuum reservoir, 5-small piston rod, the large piston rod of 6-, 7-aperture, 8-guide collar, 9 joints.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Figure 1, a kind of stretching air spring, be provided with piston cylinder 1 and piston 2, piston cylinder 1 is divided into air-fuel mixture cylinder 3 and vacuum reservoir 4 by piston 2, described piston 2 is provided with small piston rod 5 towards air-fuel mixture cylinder 3 one end, piston 2 is faced vacuum reservoir 4 one end and is provided with large piston rod 6, piston 2, small piston rod 5, large piston rod 6 is positioned on same shaft axis, described piston 2 is provided with aperture 7, described small piston rod 5 and large piston rod 6 covers have guide collar 8, guide collar 8 seals, described piston cylinder 1 and small piston rod 5 ends are respectively equipped with a joint 9, in described air-fuel mixture cylinder 3, be filled with inert gas.。
Stretching air spring is in the time of concrete application, two end connectors should be fixed with external object respectively, in the time that air spring receives that external force pulls, small piston rod 5 is drawn out outside deactivation plug cylinder 1, and simultaneously large piston rod 6 slowly enters in air-fuel mixture cylinder 3, because large piston rod 6 is larger than the diameter of small piston rod 5, so large piston rod 6 makes the inert gas in air-fuel mixture cylinder 3 compressed, produces pressure, once the external force of removing, air pressure can, by large piston rod 6 pushed home, restore to the original state.
This stretching air spring can be widely used in car door, and jack knifing seat is safe and reliable, has made up the application vacancy of conventional compression formula air spring.
Within the similar designed stretching air spring of technical characteristics of any employing and the utility model will fall into protection domain of the present utility model.
Claims (4)
1. a stretching air spring, be provided with piston cylinder (1) and piston (2), piston cylinder (1) is divided into air-fuel mixture cylinder (3) and vacuum reservoir (4) by piston (2), it is characterized in that: described piston (2) is provided with small piston rod (5) towards air-fuel mixture cylinder (3) one end, piston (2) is faced vacuum reservoir (4) one end and is provided with large piston rod (6), piston (2), small piston rod (5), large piston rod (6) are positioned on same shaft axis, and described piston (2) is provided with aperture (7).
2. a kind of stretching air spring according to claim 1, is characterized in that: described small piston rod (5) and large piston rod (6) cover have guide collar (8), and guide collar (8) seals.
3. a kind of stretching air spring according to claim 1, is characterized in that: described piston cylinder (1) and small piston rod (5) end are respectively equipped with a joint (9).
4. a kind of stretching air spring according to claim 1, is characterized in that: in described air-fuel mixture cylinder (3), be filled with inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784238.9U CN203702965U (en) | 2013-12-04 | 2013-12-04 | Stretchable gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784238.9U CN203702965U (en) | 2013-12-04 | 2013-12-04 | Stretchable gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702965U true CN203702965U (en) | 2014-07-09 |
Family
ID=51053412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320784238.9U Expired - Fee Related CN203702965U (en) | 2013-12-04 | 2013-12-04 | Stretchable gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629287A (en) * | 2013-12-04 | 2014-03-12 | 孙肃松 | Stretching type air spring |
| CN112681925A (en) * | 2020-12-16 | 2021-04-20 | 北京汽车股份有限公司 | Gas spring for vehicle, tail gate and car |
-
2013
- 2013-12-04 CN CN201320784238.9U patent/CN203702965U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629287A (en) * | 2013-12-04 | 2014-03-12 | 孙肃松 | Stretching type air spring |
| CN112681925A (en) * | 2020-12-16 | 2021-04-20 | 北京汽车股份有限公司 | Gas spring for vehicle, tail gate and car |
| CN112681925B (en) * | 2020-12-16 | 2022-09-13 | 北京汽车股份有限公司 | Gas spring for vehicle, tail gate and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20141204 |
|
| EXPY | Termination of patent right or utility model |