CN201461824U - Two-way damping gas spring - Google Patents
Two-way damping gas spring Download PDFInfo
- Publication number
- CN201461824U CN201461824U CN2009200721048U CN200920072104U CN201461824U CN 201461824 U CN201461824 U CN 201461824U CN 2009200721048 U CN2009200721048 U CN 2009200721048U CN 200920072104 U CN200920072104 U CN 200920072104U CN 201461824 U CN201461824 U CN 201461824U
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- piston
- gas spring
- piston rod
- cushion pad
- 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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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a two-way damping gas spring comprising a cylinder barrel, a piston and a piston rod, wherein hydraulic oil is stored in a cavity formed by a rear sealing head of the cylinder barrel and the piston; the piston is provided with a sealing ring; a front seal of the cylinder barrel is arranged on the extending end of the piston rod and comprises a spacer sleeve, a dynamic sealing ring and a guide part; the cylinder barrel is provided with an inward first groove on a contact section of the cylinder barrel and the spacer sleeve; a cushion pad is arranged between the piston and the spacer sleeve; and when the extending length of the piston rod approximates to maximum, a port of the cushion pad is positioned between the piston and an inward second groove arranged on the cylinder barrel. Compared with the prior art, the two-way damping gas spring carries out the buffering through oil pressure damping when the gas spring is compressed to the rear sealing head and contacts the cushion pad for the buffering when the piston rod of the gas spring extends to the front seal, thereby realizing the two-way damping; and in addition, the utility model has ingenious conception and reasonable structure, carries out the damping for preventing inertial impact on both ends of the working stroke of the gas spring and can prolong the service life of a whole mechanism.
Description
Technical field:
The utility model relates to a kind of spring, vibration damper; Damping device is more specifically to a kind of bidirectional damper 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.At present, this product has all obtained in fields such as medical equipment, automobile, furniture, Weaving device, processing industries using widely.Air spring commonly used is by cylinder barrel, piston, piston rod, compositions such as Sealing and link, for avoid inertia impact generally cylinder barrel its inner in contain gas and part fluid, when Piston Compression cushions by the oil pressure damping during to end points.The shortcoming of this air spring is that the motion of piston has only an end to have damping, can not meet the demands in some occasion.For example: not only need carry out damping when Men Kaizhi is maximum for the air spring that supports door, slow down the opening speed of door, reduce impact force, door hinge is supported in protection; Because of it is provided with auto-lock function, so door has bigger impact force also need alleviate this impact force when closing, door hinge is supported in protection when door is closed to least significant end.
The model utility content:
The purpose of this utility model is that a kind of bidirectional damper air spring that damping is all arranged can make piston motion to the working stroke two-end-point time is provided at the prior art deficiency.
The purpose of this utility model is to realize by following measure: a kind of bidirectional damper air spring, include cylinder barrel, piston, piston rod, there is hydraulic oil in the chamber that the back sealing head of described cylinder barrel and piston form, on the described piston seal ring is arranged, its special way is: the preceding envelope of described cylinder barrel is installed in the piston rod external part, envelope is by interstage sleeve before described, dynamic seal ring, guiding element is formed, contact-segment cylinder barrel at cylinder barrel and interstage sleeve is provided with the first inside groove, be provided with cushion pad between piston and interstage sleeve, the piston rod overhang is when maximum, and the port of cushion pad is provided with between the second inside groove at piston and cylinder barrel.
Described cylinder barrel is provided with seal ring with sealing head contact position, back
Described cylinder barrel and preceding sealing-in are touched the position and are provided with seal ring.
Compared with prior art, owing to adopted the bidirectional damper air spring that the utility model proposes, cushion by the oil pressure damping when air spring is compressed to rear head, the contact cushion pad cushions when sealing before the air spring piston rod extends to, thereby realizes bidirectional damper.The utility model exquisite composition, rational in infrastructure all has the damping of avoiding inertia impact at the two ends of air spring working stroke, can prolong the life-span of entire mechanism.
Description of drawings:
Fig. 1 is the utility model embodiment's a structural representation.
Embodiment:
Below in conjunction with accompanying drawing embodiment is elaborated:
Fig. 1 has provided the utility model embodiment's structural representation. a kind of bidirectional damper air spring, include cylinder barrel 13, piston 4, piston rod 8, there is hydraulic oil 12 in the chamber that the back sealing head 1 of described cylinder barrel and piston form, there is the preceding envelope of seal ring 5. described cylinder barrels to be installed in the piston rod external part on the described piston, envelope is by interstage sleeve 11 before described, dynamic seal ring 7, guiding element 9 is formed, contact-segment cylinder barrel at cylinder barrel and interstage sleeve is provided with the first inside groove 14, the effect of described first groove mainly is fixing interstage sleeve, dynamic seal ring and guiding element. between piston and interstage sleeve, be provided with cushion pad 6, the piston rod overhang is when maximum, the port of cushion pad is provided with between the second inside groove 15 at piston and cylinder barrel, because the setting of cushion pad, piston begins to compress cushion pad when the approaching maximum of piston rod overhang, distortion by cushion pad plays damping function, avoids the impact that brings because of inertia at the two ends of working stroke.
Described cylinder barrel is provided with seal ring 2 with sealing head contact position, back, and described cylinder barrel and preceding sealing-in are touched the position and be provided with seal ring 10.The setting of seal ring can prevent to leak.During the utility model work, piston rod must be installed up.
The foregoing description does not constitute restriction of the present utility model, and all employings are equal to the technological scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.
Claims (3)
1. bidirectional damper air spring, include cylinder barrel, piston, piston rod, there is hydraulic oil in the chamber that the back sealing head of described cylinder barrel and piston form, on the described piston seal ring is arranged, it is characterized in that: the preceding envelope of described cylinder barrel is installed in the piston rod external part, envelope is made up of interstage sleeve, dynamic seal ring, guiding element before described, contact-segment cylinder barrel at cylinder barrel and interstage sleeve is provided with the first inside groove, be provided with cushion pad between piston and interstage sleeve, the piston rod overhang is when maximum, and the port of cushion pad is provided with between the second inside groove at piston and cylinder barrel.
2. bidirectional damper air spring according to claim 1 is characterized in that described cylinder barrel and sealing head contact position, back are provided with seal ring.
3. bidirectional damper air spring according to claim 1 and 2 is characterized in that described cylinder barrel and preceding sealing-in touch the position and be provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200721048U CN201461824U (en) | 2009-05-12 | 2009-05-12 | Two-way damping gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200721048U CN201461824U (en) | 2009-05-12 | 2009-05-12 | Two-way damping gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461824U true CN201461824U (en) | 2010-05-12 |
Family
ID=42389177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200721048U Expired - Fee Related CN201461824U (en) | 2009-05-12 | 2009-05-12 | Two-way damping gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969087A (en) * | 2017-03-20 | 2017-07-21 | 宁波力减震器有限公司 | Treadmill buffer air spring |
| CN111720468A (en) * | 2020-07-02 | 2020-09-29 | 江苏三乔智能科技有限公司 | Balance air spring with bidirectional power airflow control piece |
-
2009
- 2009-05-12 CN CN2009200721048U patent/CN201461824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969087A (en) * | 2017-03-20 | 2017-07-21 | 宁波力减震器有限公司 | Treadmill buffer air spring |
| CN111720468A (en) * | 2020-07-02 | 2020-09-29 | 江苏三乔智能科技有限公司 | Balance air spring with bidirectional power airflow control piece |
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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: 20100512 Termination date: 20120512 |