CN201090650Y - Air bag type gas spring - Google Patents
Air bag type gas spring Download PDFInfo
- Publication number
- CN201090650Y CN201090650Y CNU2007201217571U CN200720121757U CN201090650Y CN 201090650 Y CN201090650 Y CN 201090650Y CN U2007201217571 U CNU2007201217571 U CN U2007201217571U CN 200720121757 U CN200720121757 U CN 200720121757U CN 201090650 Y CN201090650 Y CN 201090650Y
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- cylinder body
- gas spring
- type gas
- balloon
- piston
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Abstract
The utility model relates to a gasbag air spring which comprises a cylinder body, a cylinder cover and a framework respectively fixed at the two opening ends of the cylinder body, a piston arranged inside the cylinder body, and a piston rod which is connected with the piston and has one end stretching out of the cylinder body. The gasbag air spring also includes a gasbag sealedly fixed inside the cylinder body, and an air valve communicated with the interior of the gasbag. The gasbag air spring with such a structure is easy to install, dismantle and repair, and is good in sealing performance, low in cost and convenient in peroration, which can charge and discharge the gasbag and can adjust the operating stroke through controlling the air pressure inside the gasbag.
Description
Technical field
The utility model relates to a kind of air spring, relates in particular to a kind of air spring of air sac type.
Background technique
Air spring is a kind of accumulation of energy assembly, by storing and the release of gas pressure energy, forms the stretching, extension thrust of piston rod, is used widely in every profession and trade at present.Two Room air springs of the prior art mainly include cylinder body, damping piston, piston rod and separator piston.Be provided with air cavity and sap cavity in the cylinder body, with gas-liquid separation, described piston rod links to each other with damping piston by described separator piston, and is arranged at a side of sap cavity.During work, piston rod is pressed in the cylinder body, promotes damping piston and does axial motion and push fluid, and fluid forces separator piston to move axially to a side of air cavity again, thereby pressurized gas is finished the energy storage step.After external force disappeared, air cavity gas expanded, and promoted separator piston to oil pocket one side shifting, and fluid promotes damping piston and resets, and damping piston is subjected to protruding from the prevention of the slot rolling of inboard wall of cylinder block, thereby realized the location.Damping slot (damping piston is all the time in fluid) by damping hole in the damping piston or inboard wall of cylinder block in the whole device is realized damped motion.
But existing air spring has following problem: because of separator piston needs gas and liquid are effectively isolated, so need between separator piston and the cylinder body to adopt highi degree of accuracy to cooperate, yet precision is high more, and the frictional force between separator piston and the cylinder body will be big more, and it is just painstaking more to be pressed into piston rod; Otherwise then the air spring performance is bad; Therefore the air spring of this framework uprises fabricating cost, and shorten working life, and operation inconvenience.In addition, when resetting,, damping piston can not be moved with respect to cylinder body because of having coupling mechanism force between damping piston and the slot rolling, so the time need increase the thrust of piston rod, yet increase thrust and cause the distortion of damping piston or slot rolling easily, and then influence stroke, tensile strength is reduced; And because the machining accuracy of slot rolling is not high, impel working stroke inconsistent, and existing air spring can not keep in repair and dismounting, thereby make its working stroke non-adjustable.
The model utility content
The technical problems to be solved in the utility model provides a kind of Balloon-Type Gas Spring, and its fabricating cost is lower, operates lightly, and working stroke is stable, and the life-span is long, inflatable venting, convenient for maintaining and dismounting.
Goal of the invention of the present utility model is achieved through the following technical solutions:
Balloon-Type Gas Spring of the present utility model, the cylinder cap that comprise cylinder body, is fixed on cylinder body two opening ends and skeleton, be arranged on the piston of cylinder interior and link to each other with piston and an end stretches out the piston rod of cylinder body, it is characterized in that: also comprise the air bag of sealing and fixing in described cylinder interior, and the valve valve that communicates with the inner appearance of air bag air cavity.
On the said structure basis, wherein:
Described air bag is arranged on a side of contiguous described cylinder cap, and described valve valve is arranged on the described cylinder cap.
Described air bag is crimped on the described cylinder body by snap ring, and is provided with the stuffing box gland that seals between described snap ring and the described cylinder cap, also is provided with the limiting stopper that limits the snap ring position on described cylinder body.
Be concaved with at least one damping slot on the inwall of described cylinder body, the degree of depth of described damping slot diminishes to the other end gradually from an end of contiguous air bag.
The inwall at described cylinder body two ends is provided with internal thread, and described cylinder cap is respectively equipped with the outside thread that matches with cylinder body two ends internal thread with the outer wall of skeleton.
The tubular construction that described skeleton has the bottom and extends to cylinder interior from the bottom is provided with at least one through hole on described tubular construction.
Described piston rod passes the tubular construction and the bottom of described skeleton, and is being respectively equipped with outside framework oil seal between the inwall of described piston rod and tubular construction and between the outer wall of described cylinder body and tubular construction.
Be provided with seal washer between described outside framework oil seal and the described skeleton.
Has the pad that seals between the end face of described cylinder body and the described skeleton.
The outside of described cylinder cap is provided with the mounting hole that is used to install Balloon-Type Gas Spring.
The beneficial effects of the utility model are: 1, by the screw-thread fit of cylinder body and cylinder cap and skeleton, make device be easy to dismounting and maintenance, sealing is good, and is with low cost.2, air bag cooperates with cylinder body by snap ring, and because the setting of valve valve, can be to airbag aeration and venting, thus realize limited piston stroke effect with this air pressure of controlling in the air bag.3, the end face of tubular construction and piston end surface fit in the skeleton, can realize the good location of piston.4, owing to have damping slot on the cylinder body, so less demanding to the piston precision makes the cost reduction.5, piston moves in fluid all the time, and surface friction drag is little, operates light.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is the structural representation of the utility model Balloon-Type Gas Spring;
Fig. 2 is the plan view of the skeleton of Balloon-Type Gas Spring in the utility model;
Fig. 3 is the sectional view of A-A direction among Fig. 2.
Embodiment
Provide preferred embodiments of the present utility model below in conjunction with accompanying drawing 1, to describe the technical solution of the utility model in detail.
As shown in Figure 1, Balloon-Type Gas Spring device of the present utility model comprises cylinder body 1, skeleton 2, outside framework oil seal 3, piston 4, piston rod 5, cylinder cap 6, valve valve 7 and air bag 8.
Described skeleton 2 and cylinder cap 6 are separately positioned on two opening ends of cylinder body 1, and the inwall at cylinder body 1 two ends is provided with internal thread, and skeleton 2 is provided with outside thread with the outer wall of cylinder cap 6, by internal thread and externally threaded the cooperation cylinder body 1 and skeleton 2 and cylinder cap 6 being locked and connected.In the present embodiment, described cylinder body 1, skeleton 2 and cylinder cap 6 are all metal material.
The structure of skeleton 2 sees also Fig. 2 and shown in Figure 3, and it has 20 tubular constructions 22 that extend from the bottom.After skeleton 2 and cylinder body 1 assembling are finished, be provided with pad 9 between the bottom 20 of the end face of cylinder body 1 and skeleton 2, be used to make the cooperation of screw thread to have good sealing property.Columnar structured 22 of described skeleton 2 is positioned at the inside of cylinder body 1, and adjacent with the piston 4 of cylinder body 1 inside.When piston 4 resetted, the end face of the end face of piston 4 and tubular construction 22 was fitted.One end of piston rod 5 is fixedlyed connected with piston 4, the other end pass skeleton 2 columnar structured 22 and stretch out in described cylinder body 1.In the present embodiment, adopt riveted fixing between piston 4 and the piston rod 5.
Between the outer wall of the inwall of described skeleton 2 columnar structured 22 and piston rod 5 and between the inwall of the outer wall of tubular construction 22 and cylinder body 1 described outside framework oil seal 3 is being housed respectively, in the present embodiment, cooperating between described outside framework oil seal 3 and skeleton 2 and the piston rod 5 is interference fit, and is being provided with inner washer 10a and outer washer 10b between described outside framework oil seal 3 and skeleton bottom 20.Be provided with at least one through hole 24 on the sidewall of skeleton 2 tubular constructions 22, this through hole 24 can make the inside and outside both sides fluid of tubular construction 22 communicate, and in the present embodiment, described through hole 24 is a pair of.
Described air bag 8 is isolated the gas-liquid in the cylinder body 1, and air bag 8 is crimped on the side that cylinder body 1 is adjacent to cylinder cap 6 by snap ring 11, between snap ring 11 and cylinder cap 6, be provided with the stuffing box gland 12 that seals, and also press-fit on the cylinder body 1 and be provided with the limiting stopper 13 that is used for 11 position-limiting actions of snap ring.
In the present embodiment, described valve valve 7 is arranged on the described cylinder cap 6, and valve valve 7 communicates with the air cavity 80 of air bag 8 inside, can inflate in air bag 8 or exit by this valve valve 7, control the air pressure of air bag 8 inside with this, thereby realize the effect of regulating piston 4 working strokes.The setting of valve valve 7 for ease of maintenaince and dismounting and is not afraid of gas leakage.Also be provided with at least one mounting hole 60 in the outside of described cylinder cap 6, be used for whole Balloon-Type Gas Spring is installed to external means.
At least be provided with a damping slot 14 in the middle of the sidewall of described cylinder body 1, in the present embodiment, the quantity of described damping slot 14 is a pair of, and triangular in shape.The degree of depth of described damping slot 14 diminishes to an end of adjacent piston 4 gradually from an end of contiguous air bag 8, and described damping slot 14 is arranged with to the outside of cylinder body 1 from the inwall of cylinder body 1 and forms.
When whole device work, at first piston rod 5 is pressed in the cylinder body 1, piston rod 5 promotes piston 4 and pushes the fluid of cylinder body 1 inside, fluid among the upper oil cavitie 15a flows among the lower oil cavitie 15b by damping slot 14, gas in piston 4 extruding fluid and the compressing gasbag 8, make air cavity 80 volume-variation in the air bag 8, reach the maximum functional stroke at last; When the external force on the piston rod 5 disappears, eject piston rod 5, piston 4 is pressed into the fluid of lower oil cavitie 15b among the upper oil cavitie 15a by damping slot 14, and the gas in the air bag 8 restores, and makes piston 4 move to the end face location of skeleton 2 tubular constructions 22.In addition, can inflate venting, thereby regulate air pressure Control work stroke in the air bag 8 with this by valve valve 7.
In other mode of execution of the present utility model, described valve valve 7 can be set directly on the described cylinder body 1, and is connected with the appearance air cavity of air bag 8 inside, can realize charging and discharging the effect of gas and control air pressure equally.
The cylinder cap 6 of this kind device cooperates with cylinder body 1 by screw thread with skeleton 2, makes device be easy to dismounting and maintenance, and has good sealing property.Because the location of piston 4 is good and always work in the fluid, thereby can reduce the machining accuracy of piston 4, cost is reduced, and because the reduction of piston 4 precision, reduced the frictional force between piston 4 and the cylinder body 1, thereby made the device working stroke more stable, more convenient to operate.Because the setting of the utility model valve valve 7 makes the device easy disassembling and is not afraid of gas leakage, in addition can be by controlling the working stroke that air bag 8 interior air pressure come regulated at will piston 4 and piston rod 5.
The embodiment of the above is a better embodiment of the present utility model, is not to limit concrete practical range of the present utility model with this, and the equivalence that all shapes according to the utility model, structure are done changes all in protection domain of the present utility model.
Claims (10)
1. Balloon-Type Gas Spring, the cylinder cap that comprise cylinder body, is fixed on cylinder body two opening ends and skeleton, be arranged on the piston of cylinder interior and link to each other with piston and an end stretches out the piston rod of cylinder body, it is characterized in that: also comprise the air bag of sealing and fixing in described cylinder interior, and the valve valve that communicates with the inner appearance of air bag air cavity.
2. Balloon-Type Gas Spring according to claim 1 is characterized in that: described air bag is arranged on a side of contiguous described cylinder cap, and described valve valve is arranged on the described cylinder cap.
3. Balloon-Type Gas Spring according to claim 2, it is characterized in that: described air bag is crimped on the described cylinder body by snap ring, and be provided with the stuffing box gland that seals between described snap ring and the described cylinder cap, on described cylinder body, also be provided with the limiting stopper that limits the snap ring position.
4. Balloon-Type Gas Spring according to claim 1 is characterized in that: be concaved with at least one damping slot on the inwall of described cylinder body, the degree of depth of described damping slot diminishes to the other end gradually from an end of contiguous air bag.
5. Balloon-Type Gas Spring according to claim 1 is characterized in that: the inwall at described cylinder body two ends is provided with internal thread, and described cylinder cap is respectively equipped with the outside thread that matches with cylinder body two ends internal thread with the outer wall of skeleton.
6. Balloon-Type Gas Spring according to claim 1 is characterized in that: the tubular construction that described skeleton has the bottom and extends to cylinder interior from the bottom is provided with at least one through hole on described tubular construction.
7. Balloon-Type Gas Spring according to claim 6, it is characterized in that: described piston rod passes the tubular construction and the bottom of described skeleton, and is being respectively equipped with outside framework oil seal between the inwall of described piston rod and tubular construction and between the outer wall of described cylinder body and tubular construction.
8. Balloon-Type Gas Spring according to claim 7 is characterized in that: be provided with seal washer between described outside framework oil seal and the described skeleton.
9. Balloon-Type Gas Spring according to claim 1 is characterized in that: have the pad that seals between the end face of described cylinder body and the described skeleton.
10. Balloon-Type Gas Spring according to claim 1 is characterized in that: the outside of described cylinder cap is provided with the mounting hole that is used to install Balloon-Type Gas Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201217571U CN201090650Y (en) | 2007-07-24 | 2007-07-24 | Air bag type gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201217571U CN201090650Y (en) | 2007-07-24 | 2007-07-24 | Air bag type gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090650Y true CN201090650Y (en) | 2008-07-23 |
Family
ID=39862411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201217571U Expired - Lifetime CN201090650Y (en) | 2007-07-24 | 2007-07-24 | Air bag type gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090650Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291802A (en) * | 2013-06-27 | 2013-09-11 | 无锡市宏源弹性器材有限公司 | Air spring buffer |
| CN105351421A (en) * | 2015-11-19 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Hydro-pneumatic suspension device |
| CN112832634A (en) * | 2020-12-31 | 2021-05-25 | 青岛德力永鑫机械有限公司 | Automatic door device based on isolating door uses and adds lubricating oil automatically |
-
2007
- 2007-07-24 CN CNU2007201217571U patent/CN201090650Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291802A (en) * | 2013-06-27 | 2013-09-11 | 无锡市宏源弹性器材有限公司 | Air spring buffer |
| CN105351421A (en) * | 2015-11-19 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Hydro-pneumatic suspension device |
| CN112832634A (en) * | 2020-12-31 | 2021-05-25 | 青岛德力永鑫机械有限公司 | Automatic door device based on isolating door uses and adds lubricating oil automatically |
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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: Shenzhen BYD Auto Co., Ltd. Assignor: Biyadi Co., Ltd. Contract fulfillment period: 2008.4.25 to 2016.7.11 Contract record no.: 2008440000079 Denomination of utility model: Gasbag air springs Granted publication date: 20080723 License type: General permission Record date: 20080513 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.25 TO 2016.7.11 Name of requester: BIYADI AUTOMOBILE CO., LTD., SHENZHEN CITY Effective date: 20080513 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080723 |
|
| CX01 | Expiry of patent term |