CN207178559U - Main piston used in gas spring - Google Patents
Main piston used in gas spring Download PDFInfo
- Publication number
- CN207178559U CN207178559U CN201721007215.1U CN201721007215U CN207178559U CN 207178559 U CN207178559 U CN 207178559U CN 201721007215 U CN201721007215 U CN 201721007215U CN 207178559 U CN207178559 U CN 207178559U
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- Prior art keywords
- hole
- gas spring
- piston
- piston body
- oil pocket
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Abstract
Main piston used in a kind of gas spring is the utility model is related to, installed in the piston rod bottom of gas spring, including piston body, described piston body：Front end has inner chamber of the opening towards piston rod direction, rear end has shoulder hole, connected between inner chamber and the aperture of shoulder hole by through hole, piston body rear end periphery has the forward flange and rear flange being slidably matched with gas spring inner cylinder tube, the annular groove of installation gas spring primary seal circle is formed between the forward flange and rear flange, the radial hole communicated with the through hole is offered on the piston body on front side of forward flange, piston body bottom face is located at shoulder hole macropore surrounding and offers axial hole, offer in the annular groove and communicated with axial hole, the radial hole for being sealed or being opened by primary seal circle.After the utility model is used in gas spring, without unblock air spring piston bar can be made to rise to any position, and the locking operation of piston rod need not be carried out, so as to simplify operating process, improve the stability of strutting system of gas spring.
Description
Technical field
It the utility model is related to gas spring technology field, the main piston used in especially a kind of gas spring.
Background technology
For gas spring as a kind of straight line driving mechanism, reaction speed is fast, and robust motion is good, therefore is widely used in doing
The lift adjustment of public tables and chairs.As the main piston of gas spring core members, opening for oil circuit is played in lifting process and is made with closure
With the main piston structure used in existing gas spring, when being lifted or declining tables and chairs height, gas spring could be made after will first unlocking
Elevating movement, operation is more troublesome, especially tables and chairs rise to require height after, also to carry out pinning the operation of gas spring.
The content of the invention
The technical problems to be solved in the utility model is：In order to overcome deficiency in the prior art, the utility model provides
A kind of simplified operation, improve main piston used in the gas spring of stability of strutting system.
Technical scheme is used by the utility model solves its technical problem：Main piston used in a kind of gas spring, installation
In the piston rod bottom of gas spring, including piston body, described piston body：Front end has opening towards in piston rod direction
Chamber, rear end have shoulder hole, are connected between inner chamber and the aperture of shoulder hole by through hole, and piston body rear end periphery has and gas bullet
The forward flange and rear flange that spring inner cylinder tube is slidably matched, installation gas spring primary seal circle is formed between the forward flange and rear flange
Annular groove, the width of annular groove meet primary seal circle slid in it after connection or closing gas-spring pressure oil stream it is dynamic
It is required that offering the radial hole communicated with the through hole on the piston body on front side of forward flange, piston body bottom face is located at rank
Terraced hole macropore surrounding offers axial hole, is offered in the annular groove and is communicated with axial hole, sealed or beaten by primary seal circle
The radial hole opened.
Preferably, annular is evenly equipped with four axial holes on described piston body bottom face, on the piston body on front side of forward flange
Offer four uniform radial holes of circumference.
Specifically, the first of the main oil pocket of gas spring and interior oil pocket is connected when described axial hole is formed and risen with radial hole
Passage, radial hole connect the second channel of the main oil pocket of gas spring and interior oil pocket when being formed and declined with through hole.
The beneficial effects of the utility model are：The utility model opens up what is sealed or opened by primary seal circle on the piston body
Connection between radial hole and axial hole, realize gas spring rise when main oil pocket and interior oil pocket between the passage connection,
Closing during decline between main oil pocket and interior oil pocket in the passage, it can be moved to the rising of air spring piston bar without unblock and appoint
What position, and ensure that piston rod rests on any position without carrying out locking operation by pressure balance, so as to simplify behaviour
Make process, improve the stability of strutting system of gas spring.
Brief description of the drawings
The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation that the utility model is installed on gas spring.
View when being in static during Fig. 3 utility model works.
Pressure oil flows to schematic diagram when Fig. 4 is rising during utility model works.
Fig. 5 is to rise view when in place during utility model works.
Pressure oil when Fig. 6 is decline during utility model works flows to schematic diagram
In figure：1. the annular groove 8. of 2. inner chamber of piston body, 3. shoulder hole, 4. through hole, 5. forward flange, 6. rear flange 7.
The auxiliary piston of 14. cylinder bottom of radial hole 9. axial hole, 10. radial hole, 11. outer cylinder, 12. inner cylinder tube, 13. piston rod 15.
16. the main primary seal circle of 20. locking bar of oil pocket 21. of oil pocket 19. in the outer oil cavity 18. of pressure air cavity 17.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram,
Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.
As shown in Figure 1 and Figure 2, a kind of to support main piston used in the gas spring of desk lifting, the gas spring has outer shell
Cylinder 11, inner cylinder tube 12, piston rod 13, upper lid and cylinder bottom 14, slide between outer cylinder 11 and inner cylinder tube 12 and are provided with auxiliary piston 15, institute
State main piston and be arranged on the bottom of piston rod 13, thus, surrounded by auxiliary piston 15, outer cylinder 11, inner cylinder tube 12 and cylinder bottom 14
Cavity forms pressure air cavity 16, and auxiliary piston 15, outer cylinder 11, inner cylinder tube 12 and the surrounded cavity of upper lid form outer oil cavity 17,
Oil pocket 18 in being formed between inner cylinder tube 12 and piston rod 13, main oil pocket is formed between main piston, cylinder bottom 14 and the inwall of inner cylinder tube 12
19。
Described main piston includes piston body 1, described piston body 1：Its front end has opening towards the direction of piston rod 13
Inner chamber 2, rear end there is shoulder hole 3, connected between inner chamber 2 and the aperture of shoulder hole 3 by through hole 4, the rear end periphery of piston body 1
With the forward flange 5 and rear flange 6 being slidably matched with the inwall of inner cylinder tube 12, the bottom of piston rod 13 is connected with inner chamber 2, is used for
The locking bar 20 that piston rod 13 unlocks when declining is arranged in the shoulder hole 3 and head is extended in inner chamber 2.
The annular groove 7 of installation gas spring primary seal circle 21, the annular are formed between the forward flange 5 and rear flange 6
2~3 times of diameters of primary seal circle 21 of width of groove 7, minimum width must are fulfilled for connecting after primary seal circle 21 slides in it
Or the requirement that closing gas-spring pressure oil stream is dynamic, it is preferable that 2.5 times of diameters of primary seal circle 21 of width of the annular groove 7,
The uniform radial hole 8 of four circumferences communicated with the through hole 4, piston body are offered on the piston body 1 of the front side of forward flange 5
1 bottom face is located at the macropore surrounding annular of shoulder hole 3 and is evenly equipped with four axial holes 9, is offered in the annular groove 7 and axial hole
9 communicate, the radial hole 10 of opening and closing is controlled by primary seal circle 21, described axial hole 9 forms piston rod 13 with radial hole 10
The first passage of main oil pocket 19 and interior oil pocket 18 is connected during rising, radial hole 8 forms when piston rod 13 declines with through hole 4 and connects master
The second channel of oil pocket 19 and interior oil pocket 18.
Primary seal circle 21 moves down when piston rod 13 rises to be slid away from radial hole 10 and connects the main oil pocket of gas spring
First passage between 19 and interior oil pocket 18, primary seal circle 21 move up reset sealing radial hole 10 when piston rod 13 declines,
The first passage closed between main oil pocket 19 and interior oil pocket 18.
As shown in Fig. 3~Fig. 6 is the gas spring course of work summary for being provided with above-mentioned main piston：Said by taking desk as an example
It is bright, when desk needs to rise, without unblock, as long as lifting desk, piston is pulled by the piston rod 13 being connected with desk
Body 1 rises, and primary seal circle 21 at this moment mutually involves caused frictional force effect, Xiang Huan between by piston body 1 and inner cylinder tube 12
The lower end of connected in star 7 it is mobile and away from radial hole 10, the first passage between main oil pocket 19 and interior oil pocket 18 is opened, due to pressure
Atmospheric pressure in strength chamber 16 is much larger than oil pressure so that auxiliary piston 15 moves up, and promotes the pressure oil in outer oil cavity 17 to pass through upper
The radial passage covered fills into interior oil pocket 18, and the pressure oil in interior oil pocket 18 enters in main oil pocket 19 through first passage, until doing
Public table rises regulation in place, pressure balance, and auxiliary piston 15 stops moving up, now because desk deadweight and user operate inertia
Effect, can produce a lower pressure, and this of short duration power that pushes acts on so that a moment sinking action occurs in piston body 1, and lives
The moment of cock body 1 sinks, and produces mutually drawing effect with inner cylinder tube 12 again, and caused frictional force, which acts on, causes primary seal circle 21
Move up, when moving past radial hole 10 in the compression of primary seal circle 21, the hydraulic oil in main oil pocket 19 can be pushed away by radial hole 10
Dynamic primary seal circle 21 is moved up further until described first passage is fully sealed, and now desk rises regulation in place, gas
Spring remains static；Because the asphalt channel of gas spring is closed, desk firmly can not be pushed, work as desk
When needing lower adjusting height, unlocking of locking bar 20 is first pushed, shoulder hole 3 of the pressure oil through piston body 1, the and of through hole 4 in main oil pocket 19
For oil pocket 18 to outer oil cavity 17, oil pressure is more than atmospheric pressure, promotes under auxiliary piston 15 in the second channel inflow that radial hole 8 is formed
Move, gas is compressed in pressure air cavity 16, until table height is lowered in place, locking bar 20, which is pressurized, to be resetted, and second channel is sealed
Firmly, gas spring is again at inactive state.
The utility model opens up the radial hole 10 and axial hole 9 for being sealed or being opened by primary seal circle 21 on piston body 1
Between connection, realize gas spring rise when main oil pocket 19 and interior oil pocket 18 between the passage connection, decline when main oil pocket
In the closing of the passage between 19 and interior oil pocket 18, without unblock air spring piston bar 13 can be made to increase and be moved to any position
Put, and ensure that piston rod 13 rests on any position without carrying out locking operation by pressure balance, so as to simplify operation
Process, improve the stability of strutting system of gas spring.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right
Property scope.
Claims (3)
1. main piston used in a kind of gas spring, installed in the piston rod bottom of gas spring, including piston body, it is characterized in that：It is described
Piston body：Front end with opening towards the inner chamber in piston rod direction, rear end with shoulder hole, the aperture of inner chamber and shoulder hole it
Between connected by through hole, piston body rear end periphery has the forward flange and rear flange that are slidably matched with gas spring inner cylinder tube, described
The annular groove of installation gas spring primary seal circle is formed between forward flange and rear flange, the width of annular groove meets primary seal circle
Connection or the dynamic requirement of closing gas-spring pressure oil stream after sliding in it, offered on the piston body on front side of forward flange with
The radial hole that the through hole communicates, piston body bottom face are located at shoulder hole macropore surrounding and offer axial hole, the annular groove
Inside offer the radial hole for being communicated with axial hole, being sealed or opened by primary seal circle.
2. main piston used in gas spring as claimed in claim 1, it is characterized in that：Annular is uniform on described piston body bottom face
There are four axial holes, four uniform radial holes of circumference are offered on the piston body on front side of forward flange.
3. main piston used in gas spring as claimed in claim 2, it is characterized in that：Described axial hole is formed with radial hole
The first passage of the main oil pocket of gas spring and interior oil pocket is connected when rising, radial hole connects the main oil pocket of gas spring when being formed and declined with through hole
With the second channel of interior oil pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721007215.1U CN207178559U (en) | 2017-08-11 | 2017-08-11 | Main piston used in gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721007215.1U CN207178559U (en) | 2017-08-11 | 2017-08-11 | Main piston used in gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178559U true CN207178559U (en) | 2018-04-03 |
Family
ID=61740471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721007215.1U Expired - Fee Related CN207178559U (en) | 2017-08-11 | 2017-08-11 | Main piston used in gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207178559U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237854A (en) * | 2017-08-11 | 2017-10-10 | 常州市南泰气弹簧有限公司 | Main piston used in gas spring |
-
2017
- 2017-08-11 CN CN201721007215.1U patent/CN207178559U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237854A (en) * | 2017-08-11 | 2017-10-10 | 常州市南泰气弹簧有限公司 | Main piston used in gas spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 |