CN2752510Y - Air collecting cylinder for regulating height of chair - Google Patents
Air collecting cylinder for regulating height of chair Download PDFInfo
- Publication number
- CN2752510Y CN2752510Y CN 200420097619 CN200420097619U CN2752510Y CN 2752510 Y CN2752510 Y CN 2752510Y CN 200420097619 CN200420097619 CN 200420097619 CN 200420097619 U CN200420097619 U CN 200420097619U CN 2752510 Y CN2752510 Y CN 2752510Y
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- CN
- China
- Prior art keywords
- air cylinder
- cylinder structure
- upside
- piston rod
- lifting
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- 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 - Lifetime
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- Fluid-Damping Devices (AREA)
Abstract
The utility model provides an air collecting cylinder for regulating height of chairs. The opening end of the upper side of a cylinder structure is provided with a cushion ring plate for maintaining air tightness, and the cushion ring plate is pressed and fixed under the action of a curved part of the upper end of the cylinder structure; the inside diameter of the lower end part of the cylinder structure is larger than the outside diameter of a bearing rotational structure; annular grooves are arranged along the circumference of the upper side of the inner circumferential surface of the lower end of the cylinder structure, a gas compartment for maintaining air tightness and a C-shaped connecting ring for restraining a structural support moving downwards are arranged on the annular grooves, and the appressed surface of the upper part of the connecting ring of the structural support is singly provided with a supporting sheet which is appressed with the connecting ring. According to the structure of the air collecting cylinder for regulating height of chairs of the utility model, the height regulating extent of chairs is enhanced, the function of maintaining air tightness is fulfilled and the lifting cylinder structure is capable of lifting stably.
Description
Technical field
The utility model relates to a kind of cylinder, is specifically related to a kind of cylinder of adjusting height, more specifically says to relate to a kind of chair height adjusting gas collection cylinder.
Background technique
Existing height adjustable chair is regulated by screw thread or gas collection cylinder usually, the structure of the gas collection cylinder of using in the conventional chair is shown in Fig. 1 longitdinal cross-section diagram, comprise the air cylinder structure 2 that piston rod 1 is moved under the effect of air pressure, piston rod bottom surface central authorities are fixing, can make the bared end rotation of piston rod 1 by bearing rotational structure 3; Around in the upside round air cylinder structure 2 and the exterior bowl 4 that leads; Be arranged on air cylinder structure 2 upside, along with the lifting action of central valve pin 5 optionally control gaseous move, thereby make the valve system 6 of air cylinder structure 2 liftings; Make the switching pin 7 of valve pin 5 in the upside lifting of valve system 6.Outer cylinder body 4 is fixed on the central authorities that the bottom surface, lower end is provided with the dunnage of wheel or fixed structure etc., guarantees during connection that air cylinder structure 2 can lifting.Air cylinder structure 2 is composed as follows: be used for the pipeline of the dual tubular attitude that inboard gas moves, inserted the piston rod 1 that is used for lifting in the pipeline; The bottom of piston rod 1 is attached at the bottom of outer cylinder body 4, being rotated by bearing rotational structure 3, and prevents to get loose with clip.Simultaneously, be the center with this piston, upper and lower sides respectively forms the 1st and the 2nd gas compartment 8,9, gas flow when opening and closing along with valve system 6 selectivity, air cylinder structure 2 carries out lifting.In addition, valve system 6 is by being located at the O type ring of outer circumferential face, is connected guiding gas mobile with inside pipeline 2a upper end at the upside of air cylinder structure 2; And central authorities connect valve pin 5 and carry out lifting, by the lifting action of this valve pin 5, select moving of gas.Be that valve pin 5 descends, behind the insulating space between open inner pipeline 2a and the air cylinder structure 2, gas will flow into the 1st gas compartment 8 from the mobile route of the 2nd gas compartment 9 by valve system 6, piston is pressed at gas pressure, air cylinder structure 2 rises under the effect of reflected pressure simultaneously, makes the example seat board that is connected with air cylinder structure 2 upper ends rise.After this as long as remove the pressing force of valve pin 7 on certain position, valve pin 7 will rise under pressure, and the mobile route of valve system 6 is blocked, and this moment, air cylinder structure 2 just kept this height, fixed the seat board of chair.In adopting the conventional gas collection cylinder of said structure, the stroke distances that is used to adjust height is exactly to be the center with the pistons in the air cylinder structure 2, the displacement distance of the air cylinder structure 2 of the switching lifting by valve system 6.Be piston near the position of valve system 6 be exactly lower dead centre, piston solstics apart from valve system 6 under gas pressure is exactly a upper dead center.But, at lower dead point position, the bearing rotational structure 3 of the lower side of air cylinder structure 2 and piston rod 1 rotation keeps in touch state by elastic structure, generation is equivalent to the range loss of the stroke of " B " length of an interval degree, in addition, valve system 6 upsides and air cylinder structure 2 inboards are provided with valve pin 7 are carried out the switching pin 7 of descending operation and is used for guide structure, produces the stroke distances loss that is equivalent to " A " siding-to-siding block length.
Summary of the invention
The utility model proposes in order to address the above problem just, goal of the invention is: the gas collection cylinder is connected on the seat board of chair, when making lifting, the lifting of adjustment seat plate height obtains prolonging at above-below direction with the displacement distance of air cylinder structure, thereby improves the amplitude of accommodation of chair height.
In addition, make the valve that is fixed to the air cylinder structure upper end firmly fixing, thereby increase the length of air cylinder structure, carry out tightness and keep function.
In addition, the rigidity of the urceolus that leads when increasing the air cylinder structure lifting is so that the lift cylinder structure is more stably carried out lifting.
In order to reach the foregoing invention purpose, the utility model has adopted following technical proposals.
A kind of adjustment chair height gas collection cylinder, comprise cylinder, piston rod and valve system, be provided with piston rod moving up and down under the effect of air pressure in the described cylinder, piston rod bottom surface central authorities are fixing, the bottom of piston rod is provided with the bearing rotational structure of the bared end rotation that can make piston rod, the outer cylinder body that is arranged on cylinder upside inner peripheral surface, leads round air cylinder structure; Thereby be located at the air cylinder structure upside, along with the lifting action of central valve pin optionally control gaseous move the valve system that makes the air cylinder structure lifting; Make the switching pin of valve pin, it is characterized in that in the upside lifting of valve system:
The outer axial face of valve system is provided with O type ring, is provided with maintenance tightness washer plate in the upside open end of air cylinder structure, and washer plate is pressed under the effect of the upper end of air cylinder structure curved section and is fixing; The internal diameter of the underpart of air cylinder structure is greater than the external diameter of bearing rotational structure, and the underpart of air cylinder structure can move down around the bearing rotational structure and after prolonging with certain isolation distance when descending; Around the inner peripheral surface upside of air cylinder structure underpart, be provided with circular groove, circular groove is provided with to be kept bubble-tight gas compartment and suppresses " C " type connecting ring that supporting structure moves down, this ring has elasticity, be convenient to dismounting, connecting ring top in supporting structure is close on the face, is provided with the supporting spring of being close to connecting ring separately.
In the inside of urceolus, be provided with the incorporate metal tube that is used to strengthen intensity.
The outer circumferential face of air cylinder structure upside open end is provided with gas compartment holder is set, and the bottom of air cylinder structure tightness washer plate is provided with gas compartment.
Air cylinder structure upside open end is provided with the tightness washer plate holder is set.
The above-mentioned gas chamber is the software plastics with certain cavity or groove structure, and gas compartment is when being squeezed, and the gas in the cavity is discharged, and gas compartment can be combined closely with surface all around, plays seal action.
Description of drawings
Fig. 1 is that the conventional chair height is regulated the sectional view with the gas collection cylinder.
Fig. 2 is that the chair height of the ideal case that is made into according to the utility model is regulated the sectional view with the gas collection cylinder.
Fig. 3 is " C " portion enlarged view among Fig. 2.
Fig. 4 is " D " portion enlarged view among Fig. 2.
Fig. 5 is Fig. 2 outer cylinder body sectional view.
Fig. 6 presentation graphs 2 is with the sectional view of the gas collection cylinder compressive state of the decline appearance of chair seat board portion.
Embodiment
Below, will describe this chair height in detail in conjunction with Figure of description and regulate structure, for identical with conventional structure or similar structure, if think through judgement and might obscure the present utility model purport, with detailed with the gas collection cylinder.
As shown in Figures 2 and 3, the utility model adopts following structure: the air cylinder structure 10 that piston rod 12 is moved under gas pressure, the bared end rotation of piston rod 12, the outer cylinder body 30 that the upside inner peripheral surface leads round cylinder 10 are fixed, can be made by bearing rotational structure 20 in bottom surface central authorities; Be arranged on the upside of air cylinder structure 10,, thereby make the valve system 40 of air cylinder structure 10 liftings, make the switching pin of valve pin 42 in the upside lifting of valve system 40 along with the electing property of elevating movement of central valve pin 42 ground control gaseous moves.
Therefore with respect to the inboard of conventional air cylinder structure 10, removed lifting valve pin 42 in the utility model and interval---the A interval that opens and closes pin structure is set, so stroke distances obtains prolonging.
Being constructed as follows of air cylinder structure 10: the internal diameter of the underpart of air cylinder structure is greater than the external diameter of bearing rotational structure, when the air cylinder structure underpart is descending, also prolong around bearing rotational structure 20 with certain isolation distance, be equivalent to " C " length of an interval degree with extending portion 50 formation of guaranteeing to move down, along extending portion be cylinder underpart 50 inner peripheral surface upsides around, be provided with circular groove 52, circular groove 52 is provided with and keeps bubble-tight gas compartment 53 after the bar of piston rod 12 is connected and suppress " C " type connecting ring 55 that supporting structure 54 moves down, this ring has elasticity, is convenient to dismounting.
This shows that when lower end extending portion 50 descended, air cylinder structure 10 can be around moving down behind the bearing rotational structure 20 of living " B " the length of an interval degree of side-prominent being equivalent in the outer cylinder body 30, moving section can extend to the bottom surface of outer cylinder body 30.
To be this air cylinder structure 10 from upper dead center position increased down to the moving section of lower dead centre is equivalent to A+B+C length of an interval degree, and therefore, the formation of the height amplitude of accommodation that can obtain to increase the chair seat board is apart from the effect that rises.
In addition, the connecting ring 55 of supporting structure 54 is close to and is provided with the supporting spring of being close to connecting ring 55 56 on the face separately, during assembling, can be earlier loads onto the supporting spring 56 of ring-type in the groove of the bottom surface of supporting structure 54, continues to connect connecting ring 55 then.
Be provided with the metal tube 60 that strengthens intensity the interior integrally of outer cylinder body 30, when external force takes place the air cylinder structure 10 of lifting, can support.
Above-mentioned gas chamber 45 and 53 is the software plastics of trough of belt structure, and gas compartment is when being squeezed, and the gas in the groove is discharged, and gas compartment can be combined closely with surface all around, plays seal action.
Chair height according to the utility model made is regulated the structure of using the gas collection cylinder, can be connected on the seat board of chair, and the lifting of adjustment seat plate height prolongs the length that moves down with air cylinder structure when making lifting, thereby improves the chair height amplitude of accommodation.
In addition, make the valve that is fixed to the air cylinder structure upper end firmly fixing, do the length that can increase air cylinder structure like this, and carry out tightness and keep function.
In addition, the rigidity of the outer cylinder body that has led when having increased the air cylinder structure lifting can make the lift cylinder structure more stably carry out lifting.
Claims (4)
1, a kind of adjustment chair height gas collection cylinder, comprise cylinder, piston rod and valve system, be provided with piston rod moving up and down under the effect of air pressure in the described cylinder, piston rod bottom surface central authorities are fixing, the bottom of piston rod is provided with the bearing rotational structure of the bared end rotation that can make piston rod, the outer cylinder body that is arranged on cylinder upside inner peripheral surface, leads round air cylinder structure; Thereby be located at the air cylinder structure upside, along with the lifting action of central valve pin optionally control gaseous move the valve system that makes the air cylinder structure lifting; Make the switching pin of valve pin in the upside lifting of valve system, the outer axial face of valve system is provided with O type ring, it is characterized in that:
Be provided with maintenance tightness washer plate in the upside open end of air cylinder structure, washer plate is pressed under the effect of the upper end of air cylinder structure curved section and is fixing; The internal diameter of the underpart of air cylinder structure is greater than the external diameter of bearing rotational structure; Around the inner peripheral surface upside of air cylinder structure underpart, be provided with circular groove, circular groove is provided with to be kept bubble-tight gas compartment and suppresses " C " type connecting ring that supporting structure moves down, connecting ring top in supporting structure is close on the face, is provided with the supporting spring of being close to connecting ring separately.
2, adjustment chair height gas collection cylinder according to claim 1 is characterized in that:
In the inside of urceolus, be provided with the incorporate metal tube that is used to strengthen intensity.
3, adjustment chair height gas collection cylinder according to claim 1 is characterized in that:
The outer circumferential face of air cylinder structure upside open end is provided with gas compartment holder is set, and the bottom of air cylinder structure tightness washer plate is provided with gas compartment.
4, adjustment chair height gas collection cylinder according to claim 1 is characterized in that:
Air cylinder structure upside open end is provided with the tightness washer plate holder is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420097619 CN2752510Y (en) | 2004-11-08 | 2004-11-08 | Air collecting cylinder for regulating height of chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420097619 CN2752510Y (en) | 2004-11-08 | 2004-11-08 | Air collecting cylinder for regulating height of chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2752510Y true CN2752510Y (en) | 2006-01-18 |
Family
ID=35913919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420097619 Expired - Lifetime CN2752510Y (en) | 2004-11-08 | 2004-11-08 | Air collecting cylinder for regulating height of chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2752510Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153608A1 (en) * | 2018-02-08 | 2019-08-15 | 区赞勋 | Pressure cylinder and lifting platform having same |
-
2004
- 2004-11-08 CN CN 200420097619 patent/CN2752510Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153608A1 (en) * | 2018-02-08 | 2019-08-15 | 区赞勋 | Pressure cylinder and lifting platform having same |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141108 Granted publication date: 20060118 |