CN102207150A - Compression gas spring - Google Patents
Compression gas spring Download PDFInfo
- Publication number
- CN102207150A CN102207150A CN2011101353204A CN201110135320A CN102207150A CN 102207150 A CN102207150 A CN 102207150A CN 2011101353204 A CN2011101353204 A CN 2011101353204A CN 201110135320 A CN201110135320 A CN 201110135320A CN 102207150 A CN102207150 A CN 102207150A
- Authority
- CN
- China
- Prior art keywords
- piston
- groove
- diameter section
- cylinder barrel
- ring
- 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
Images
Abstract
The invention discloses a compression gas spring, and relates to the field of springs, shock absorbers and shock-absorbing devices, in particular to the structure of a gas spring. The gas spring comprises a cylinder barrel, wherein a piston rod is inserted into the cylinder barrel; a first groove is radially formed outside the rear end of the piston rod; a front check ring and a piston are sleeved outside the piston rod in the first groove; at least two second grooves are formed outside the front check ring; the piston comprises a small diameter section and a large diameter section which are connected into a whole; a third groove and a fourth groove are formed outside the small diameter section of the piston and are respectively communicated with the corresponding second grooves; the large diameter section of the piston is provided with a throttling hole communicated with the third groove; the rear end of the large diameter section of the piston is provided with a fifth groove communicated with the throttling hole; and a rectangular ring made of polytetrafluoroethylene is arranged between the front check ring and the large diameter section of the piston, is slidably sleeved outside the small diameter section of the piston and is arranged in the cylinder barrel in a matched mode. The dynamic force value of the gas spring in the compression and extension process is stable.
Description
Technical field
The present invention relates to the field of a kind of spring, vibration damper, damping device, particularly the structure of air spring.
Background technique
Air spring is a kind ofly can play support, buffering, braking, highly regulate and the accessory of function such as angle adjustment, is widely used in fields such as medical equipment, automobile, furniture, Weaving device, machine-building.Principle is to charge into inert gas or gas mixture in airtight cylinder barrel, make the pressure in the cavity be higher than atmospheric several times or tens times, thereby the pressure difference that the cross-section area that utilizes piston rod produces less than the cross-section area of piston realize the motion of piston rod.At present, compression-type air spring piston seal and guiding adopt O shape circle, in use under the pressurized gas effect that charges in the air spring cylinder barrel, O shape circle can produce distortion in various degree, in the dynamic process inner wall of cylinder is produced the side pressure of fluctuation, lead variations of beating of system friction, so lead neutralize that the miniature air spring compresses and stretching process in the beating of dynamic force value.There is defective, influences quality of product.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, a kind of compression-type air spring of the dynamic force value stabilization in compression and stretching process is provided.
The object of the present invention is achieved like this: the compression-type air spring, comprise cylinder barrel, place piston rod in the cylinder barrel, the front end of piston rod is arranged on outside the cylinder barrel, the rear end of piston rod is arranged in the cylinder barrel, the rear end outer radial of piston rod is provided with first groove, piston rod in first groove is nested with the front circle outward, piston and back back-up ring, the rear side of back-up ring before piston is arranged on, back back-up ring is arranged on the rear side of piston, the back-up ring peripheral hardware is put at least two second grooves before described, described piston comprises reduced diameter section and the enlarged diameter section that disjunctor is provided with, the reduced diameter section of piston is arranged on the front side of enlarged diameter section, the reduced diameter section of piston is provided with the 3rd groove and the 4th groove outward, the 3rd groove and the 4th groove are connected with corresponding second groove respectively, the external diameter of the enlarged diameter section of piston is less than the internal diameter of cylinder barrel, a throttle orifice that is connected with the 3rd groove is set on the enlarged diameter section of piston, the rear end of the enlarged diameter section of piston is provided with the 5th groove that is connected with throttle orifice, the external diameter of described back back-up ring is less than the internal diameter of cylinder barrel, the rectangular ring of being made by teflon is set between the enlarged diameter section of back-up ring and piston before described, rectangular ring is slideable to be nested with outside the reduced diameter section of piston, and rectangular ring is equipped with in described cylinder barrel.
The present invention is by above design, when piston rod stretches, rectangular ring moves to the enlarged diameter section of piston, gas can enter second groove → the 3rd groove → throttle orifice → the 5th groove from rod chamber, enter rodless cavity from the gap between cylinder barrel and the back back-up ring again, this moment, the runner of the 4th groove was obstructed, had the effect of throttling buffering.During the piston rod compression, rectangular ring back-up ring forward moves, gas enters cylinder barrel and the back gap between the back-up ring from rodless cavity, enter the 5th groove → throttle orifice → the 3rd groove → second groove, gas is entered between enlarged diameter section and the rectangular ring by the enlarged diameter section and the gap between the cylinder barrel of piston simultaneously, enter the 4th groove → second groove again, enter rod chamber again, have the effect of incremental drag reduction.This structure can not only be improved compression-type air spring compression and stretch dynamic force value in the working procedure not stationarity of beating, and can improve the quality and the working life of product effectively than adopting O shape coil structures have better guiding accuracy and wear resistance.
Description of drawings
Fig. 1 is the structural representation of the present invention at stretching process.
Fig. 2 is the structural representation of the present invention in compression process.
Among the figure, 1 piston rod, 2 cylinder barrels, 3 preceding back-up rings, 4 second grooves, 5 rectangular rings, 6 the 3rd grooves, 7 throttle orifices, 8 the 5th grooves, 9 pistons, 9-1 reduced diameter section, 9-2 enlarged diameter section, 10 back back-up rings, 11 the 4th grooves, 12 first grooves.
Embodiment
As shown in Figure 1, 2, be the compression-type air spring, comprise cylinder barrel 2, place piston rod 1 in the cylinder barrel 2, the front end of piston rod 1 is arranged on outside the cylinder barrel 2, and the rear end of piston rod 1 is arranged in the cylinder barrel 2, the rear end outer radial of piston rod 1 is provided with first groove 12, piston rod 1 outer front circle 3, piston 9 and the back back-up ring 10 of being nested with in first groove 12, the rear side of back-up ring 3 before piston 9 is arranged on, back back-up ring 10 is arranged on the rear side of piston 9.
At least two second grooves 4 of preceding back-up ring 3 outer settings, piston 9 comprises reduced diameter section 9-1 and the enlarged diameter section 9-2 that disjunctor is provided with, the reduced diameter section 9-1 of piston 9 is arranged on the front side of enlarged diameter section 9-2, the reduced diameter section 9-1 of piston 9 is provided with the 3rd groove 6 and the 4th groove 11 outward, the 3rd groove 6 and the 4th groove 11 are connected with corresponding second groove 4 respectively, the external diameter of the enlarged diameter section 9-2 of piston 9 is less than the internal diameter of cylinder barrel 2, a throttle orifice 7 that is connected with the 3rd groove 6 is set on the enlarged diameter section 9-2 of piston 9, the rear end of the enlarged diameter section 9-2 of piston 9 is provided with the 5th groove 8 that is connected with throttle orifice 7, between the enlarged diameter section 9-2 of preceding back-up ring 3 and piston 9 rectangular ring of being made by teflon 5 is set, rectangular ring 5 slideable being nested with outside the reduced diameter section 9-1 of piston 9, rectangular ring 5 is equipped with in cylinder barrel 2, and the external diameter of back back-up ring 10 is less than the internal diameter of cylinder barrel 2.
Claims (1)
1. compression-type air spring, comprise cylinder barrel, place piston rod in the cylinder barrel, the front end of piston rod is arranged on outside the cylinder barrel, the rear end of piston rod is arranged in the cylinder barrel, the rear end outer radial of piston rod is provided with first groove, piston rod in first groove is nested with the front circle outward, piston and back back-up ring, the rear side of back-up ring before piston is arranged on, back back-up ring is arranged on the rear side of piston, the back-up ring peripheral hardware is put at least two second grooves before described, described piston comprises reduced diameter section and the enlarged diameter section that disjunctor is provided with, the reduced diameter section of piston is arranged on the front side of enlarged diameter section, the reduced diameter section of piston is provided with the 3rd groove and the 4th groove outward, the 3rd groove and the 4th groove are connected with corresponding second groove respectively, the external diameter of the enlarged diameter section of piston is less than the internal diameter of cylinder barrel, a throttle orifice that is connected with the 3rd groove is set on the enlarged diameter section of piston, the rear end of the enlarged diameter section of piston is provided with the 5th groove that is connected with throttle orifice, the external diameter of described back back-up ring is less than the internal diameter of cylinder barrel, it is characterized in that: the rectangular ring of being made by teflon is set between the enlarged diameter section of back-up ring and piston before described, rectangular ring is slideable to be nested with outside the reduced diameter section of piston, and rectangular ring is equipped with in described cylinder barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101353204A CN102207150A (en) | 2011-05-24 | 2011-05-24 | Compression gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101353204A CN102207150A (en) | 2011-05-24 | 2011-05-24 | Compression gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102207150A true CN102207150A (en) | 2011-10-05 |
Family
ID=44696145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101353204A Pending CN102207150A (en) | 2011-05-24 | 2011-05-24 | Compression gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102207150A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384200A (en) * | 2011-09-23 | 2012-03-21 | 宁波一力减震器有限公司 | High-damping air spring |
| CN103775552A (en) * | 2012-10-22 | 2014-05-07 | 安吉宏峰气弹簧有限公司 | Compressed type gas spring capable of achieving stopping at will |
| CN107088140A (en) * | 2017-05-24 | 2017-08-25 | 同济大学 | A kind of built-in air-pressure type wearable lower limb servicing unit |
-
2011
- 2011-05-24 CN CN2011101353204A patent/CN102207150A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384200A (en) * | 2011-09-23 | 2012-03-21 | 宁波一力减震器有限公司 | High-damping air spring |
| CN102384200B (en) * | 2011-09-23 | 2013-05-08 | 宁波一力减震器有限公司 | High-damping air spring |
| CN103775552A (en) * | 2012-10-22 | 2014-05-07 | 安吉宏峰气弹簧有限公司 | Compressed type gas spring capable of achieving stopping at will |
| CN103775552B (en) * | 2012-10-22 | 2016-01-06 | 安吉宏峰气弹簧有限公司 | A kind of can the compression type air spring of random stop |
| CN107088140A (en) * | 2017-05-24 | 2017-08-25 | 同济大学 | A kind of built-in air-pressure type wearable lower limb servicing unit |
| CN107088140B (en) * | 2017-05-24 | 2019-09-27 | 同济大学 | A kind of built-in air-pressure type wearable lower limb auxiliary device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2012215239A5 (en) | ||
| JP2013050198A5 (en) | ||
| MX341280B (en) | Amplitude sensitive hydraulic damper. | |
| CN102207150A (en) | Compression gas spring | |
| US9731574B2 (en) | Shock absorber gas spring seal | |
| CN103573906A (en) | Vibration damper with frequency-selective damping force | |
| CN202118168U (en) | Compression air spring | |
| EP2749787A3 (en) | Shock absorber, front fork, and saddle-ride type vehicle | |
| CN202402547U (en) | Stretched buffer | |
| CN202118167U (en) | Compression-type air spring capable of locking itself and jumping out | |
| CN202118177U (en) | Low-pressure controllable gas spring | |
| CN201606439U (en) | Mechanical-type air spring | |
| CN109141111B (en) | Air damping buffer device for light-gas gun | |
| CN202118175U (en) | Controllable air spring | |
| CN102278407A (en) | Controllable air spring | |
| CN102207152A (en) | Compression type gas spring with double rods | |
| CN102213287A (en) | Throttle buffering gas spring | |
| CN202118176U (en) | Throttling buffer air spring | |
| CN205401300U (en) | Multi -functional shock attenuation cylinder that resets | |
| CN104358818A (en) | Hydraulic position limiting buffer structure shock absorber | |
| CN102213288B (en) | Low-pressure controllable gas spring | |
| CN202118178U (en) | Repairable gas spring | |
| CN201588902U (en) | Gas controlled damping support spring | |
| CN210510098U (en) | Reducing hydraulic buffer shock absorber | |
| CN202118170U (en) | Double-rod compression type air spring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111005 |