CN201215153Y - Output force adjustable air spring - Google Patents
Output force adjustable air spring Download PDFInfo
- Publication number
- CN201215153Y CN201215153Y CNU2008200711338U CN200820071133U CN201215153Y CN 201215153 Y CN201215153 Y CN 201215153Y CN U2008200711338 U CNU2008200711338 U CN U2008200711338U CN 200820071133 U CN200820071133 U CN 200820071133U CN 201215153 Y CN201215153 Y CN 201215153Y
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- China
- Prior art keywords
- cylinder
- air spring
- piston
- cylinder barrel
- adjustable air
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- Expired - Fee Related
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Abstract
The utility model discloses a gas spring capable of adjusting output force, which comprises a cylinder. The cylinder is internally provided with a piston, a piston rod connected with the piston protrudes from one end of the cylinder, the other end of the cylinder is internally or externally provided with a plugging component which axially moves along the cylinder and seals the inner cavity of the cylinder, and an axial shifter which can drive the plugging component to move axially and stay at a specified plugging position is in transmission connection with the plugging component. The volume of the inner cavity of the cylinder can be changed by the axial shifter axially moving in the cylinder, and the pressure of high-pressure gas is adjusted by the volume variation of the sealed cavity of the high-pressure gas so as to adjust the output force of the gas spring, and to arbitrarily adjust the volume of the sealed cavity of the cylinder quantitatively within a certain range when the temperature reduction or the temperature rise adversely affects the supporting force of the gas spring or the output force of the gas spring needs to be adjusted according to working conditions. The utility model has relatively high operability and reliability.
Description
Technical field
The utility model relates to a kind of air spring, the adjustable air spring of especially a kind of ouput force.
Background technique
In every profession and trades such as automobile, medical treatment, furniture, the use of air spring is very extensive, and is wherein especially extensive with automotive field.Usually air spring comprises piston rod, piston, cylinder barrel, Sealing, lubricated part, guiding element, bounding means, ball/formations such as U type joint, pour the pressurized gas of certain pressure in the airtight cylinder barrel, gas pressure intensity acts on the two ends of piston, because of the piston rod area effect, cause side face of piston ring area difference, area difference is the piston rod compression area, have under the identical pressure situation at the piston two ends, the pressure reduction at piston two ends is the exportable quantitative thrust of piston rod, and the thrust output of piston rod is the product (F=PA) in pressurized gas pressure and piston rod cross section.But because of the receptance (sealing gas relation formula PV=nRT) of gas, under the situation of cylinder barrel constant volume, during high temperature to temperature, gas pressure intensity in the cylinder barrel is bigger, and the thrust output of piston rod increases, during low temperature, the inner gas pressure intensity of cylinder barrel is less, and the thrust output of piston rod reduces.Problem for the ouput force temperature influence that solves air spring, a kind of " the strut air spring of band temperature correction spring " disclosed in the specification of Chinese patent 200620165661.0, this air spring is to set gradually temperature correction piston, Sealing and temperature correction spring in the hyperbaric chamber of cylinder barrel, the left chamber of temperature correction piston is a hyperbaric chamber, and right chamber is an atmospheric pressure.This air spring is to utilize the elastic force of atmospheric pressure and spring to adjust the volume of cylinder barrel hyperbaric chamber automatically, makes the ouput force of air spring reduced by the influence of ambient temperature.But: 1, the design of this air spring is subjected to the spring restriction and more complicated, it is bigger that its reliability is influenced by spring, the adjusting of its cylinder barrel volume depends on the rigidity of spring, and can not be according to the artificial volume of accurately regulating the cylinder barrel hyperbaric chamber of air spring of on-the-spot actual demand; 2, this air spring is when ambient temperature low (such as-40 ℃), gas and spring reach equilibrium of forces again in the air spring, gas pressure intensity reduces, volume length reduces, the mechanical spring elongation, and mechanical spring power reduces, when being the ambient temperature reduction, air spring power also reduces, the state of character that the temperature remains within the normal range when not matching low temperature, and high temperature properties is opposite; 3 this air springs are qualitative compensation to a certain degree, and can not quantitative compensation all can serve as normal satisfied user mode to reach in foreseeable temperature range.
The model utility content
The adjustable air spring of ouput force that the purpose of this utility model is to provide a kind of Seal cage volume of cylinder barrel quantitatively to regulate arbitrarily within the specific limits.
The technical solution of the utility model is: the air spring that a kind of ouput force is adjustable, comprise cylinder barrel, be provided with piston in the cylinder barrel, be connected with piston rod on the piston, piston rod stretches out from an end of cylinder barrel, it is characterized in that: the inside of the other end of cylinder barrel or outside are provided with the closeouts that can move axially, seal inner cavity of cylinder along cylinder barrel, and being in transmission connection on this closeouts to drive the axially displaced device that closeouts moved axially and rested on the appointment block-up position.
Described closeouts is the axially movable volume adjustment piston that assembles in the cylinder barrel, described axially displaced device is the screw-nut body that is in transmission connection on the volume adjustment piston, one end and the volume adjustment piston of the leading screw of screw-nut body are connected, and the other end spinning is in nut.
Only revolve on the described leading screw and be movably installed with sleeve.
Be provided with dividing plate in the described sleeve, be provided with in the dividing plate with leading screw and only revolve the driving hole that cooperates.
The one end top of described nut is contained on the dividing plate.
The other end of described nut ends spinning and is assigned in the turning joint.
Be equipped with the removable spacing spring that only revolves between described sleeve and the turning joint.
Volume in the cylinder barrel enclosed cavity of air spring of the present utility model can move axially to correct position by axially displaced device driving closeouts and quantitatively regulate in cylinder barrel, and quantitatively regulate the ouput force that the pressure of pressurized gas is quantitatively regulated air spring then by the quantitative variation of the volume of the enclosed cavity at pressurized gas place, thereby descending or rise at temperature influences the support force of air spring, or the cylinder barrel sealed volume is quantitatively regulated arbitrarily within the specific limits during the ouput force of regulating air spring according to the working condition needs, thereby can in foreseeable temperature range, make air spring all keep normal satisfied user mode to reach to the ouput force quantitative compensation of spring, have stronger operability and reliability.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic cross-section that cooperates of dividing plate and leading screw in the sleeve of the present utility model.
Embodiment
As shown in Figure 1 and Figure 2, air spring of the present utility model comprises cylinder barrel 1, be provided with piston 2 in the cylinder barrel 1 and be connected piston rod 3 on the piston 2, in the cylinder barrel 1 with the piston 2 relative volume adjustment pistons 4 that are provided with, be connected with drive piston rod 5 on the volume adjustment piston 4, the outer end portion of drive piston rod 5 is that the cross section is the leading screw 6 of non-full circle, leading screw 6 inserts in the sleeve 7 and screws in the nut 8, nut 8 outer ends are connected with bulb joint 9, nut 8 is inserted in the sleeve 7, be provided with dividing plate 10 in the sleeve 7, be provided with in the dividing plate 10 with the non-circular cross-section of leading screw 6 and only revolve the driving hole 11 that cooperates.Nut 8 tops are contained on the dividing plate 10, are equipped with between sleeve 7 and the bulb joint 9 and only revolve spacing spring 12.
The utility model supposes that in when work air spring is installed on the product by nominal force under the normal extraneous room temperature, and air spring can proper functioning or can proper functioning in small temperature fluctuation range.When descending or rise, temperature influences the support force of air spring, or when regulating the ouput force of air spring according to the working condition needs, the spacing spring 12 (near threaded end) that only revolves of the present utility model can be pulled down, promptly remove rotation locking to sleeve 7, rotational sleeve 7 then, sleeve 7 drives leading screw 6 rotations of drive piston rod 5 by its inner driving hole 11, the effect of sleeve 7 here is similar to the spanner that turns leading screw, because of nut 8 and bulb joint 9 approximate fixing, and nut 8 tops are contained on the dividing plate of sleeve 7, so sleeve 7, nut 8, cylinder barrel 1 axially all can not move axially, thereby the leading screw 6 that driven by sleeve 7 is rotated in nut 8 and move axially, moving axially of leading screw 6 can be moved in cylinder barrel 1 by drive piston 5 drive volume adjustment pistons 4, volume adjustment piston 4 can be quantitative when mobile in cylinder barrel 1 increase or reduce the volume of cylinder barrel 1 inner pressurized gas place enclosed cavity, thereby quantitatively increase or reduce the pressure of pressurized gas, promptly quantitatively increase or reduce the ouput force of air spring.Because the utility model adopts threaded adjusting, when regulating, can realize accurate quantitative the adjusting.
Cylinder barrel in the foregoing description is the volume-variation that moves the seal chamber of realizing its pressurized gas place that adopts regulating piston in the cylinder barrel, can certainly adopt other closeouts to realize, for example in the cylinder barrel outside or the sleeved mode of internal sleeve realize the volume-variation of airtight cavity; The axial drive means that drives closeouts motion in addition also is not limited to the screw-nut body in the foregoing description, also can adopt other form transmission devices such as worm and gear.
Claims (7)
1, the adjustable air spring of a kind of ouput force, comprise cylinder barrel, be provided with piston in the cylinder barrel, be connected with piston rod on the piston, piston rod stretches out from an end of cylinder barrel, it is characterized in that: the inside of the other end of cylinder barrel or outside are provided with the closeouts that can move axially, seal inner cavity of cylinder along cylinder barrel, and being in transmission connection on this closeouts to drive the axially displaced device that closeouts moved axially and rested on the appointment block-up position.
2, the adjustable air spring of ouput force according to claim 1, it is characterized in that: described closeouts is the axially movable volume adjustment piston that assembles in the cylinder barrel, described axially displaced device is the screw-nut body that is in transmission connection on the volume adjustment piston, one end and the volume adjustment piston of the leading screw of screw-nut body are connected, and the other end spinning is in nut.
3, the adjustable air spring of ouput force according to claim 2 is characterized in that: only revolve on the described leading screw and be movably installed with sleeve.
4, the adjustable air spring of ouput force according to claim 3 is characterized in that: be provided with dividing plate in the described sleeve, be provided with in the dividing plate with leading screw and only revolve the driving hole that cooperates.
5, the adjustable air spring of ouput force according to claim 4 is characterized in that: the end top of described nut is contained on the dividing plate.
6, according to any air spring that described ouput force is adjustable in the claim 2,3,4, it is characterized in that: the other end of described nut ends spinning and is assigned in the turning joint.
7, the adjustable air spring of ouput force according to claim 6 is characterized in that: be equipped with the removable spacing spring that only revolves between described sleeve and the turning joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200711338U CN201215153Y (en) | 2008-06-20 | 2008-06-20 | Output force adjustable air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200711338U CN201215153Y (en) | 2008-06-20 | 2008-06-20 | Output force adjustable air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215153Y true CN201215153Y (en) | 2009-04-01 |
Family
ID=40520357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200711338U Expired - Fee Related CN201215153Y (en) | 2008-06-20 | 2008-06-20 | Output force adjustable air spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201215153Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401076A (en) * | 2011-06-22 | 2012-04-04 | 贺劼 | Compound air spring combining internal spiral spring with volume adjustment |
| CN108953456A (en) * | 2018-09-07 | 2018-12-07 | 杨华富 | A kind of Split type electrical gas spring sub-unit and Split type electrical gas spring |
| CN110056593A (en) * | 2019-04-23 | 2019-07-26 | 江苏捷尔特智能气动系统有限公司 | Pressure-adjustable gas spring, lifting device and lifting table |
| CN110306898A (en) * | 2019-06-11 | 2019-10-08 | 深圳市华星威科技有限公司 | Electric stand |
-
2008
- 2008-06-20 CN CNU2008200711338U patent/CN201215153Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401076A (en) * | 2011-06-22 | 2012-04-04 | 贺劼 | Compound air spring combining internal spiral spring with volume adjustment |
| CN108953456A (en) * | 2018-09-07 | 2018-12-07 | 杨华富 | A kind of Split type electrical gas spring sub-unit and Split type electrical gas spring |
| CN110056593A (en) * | 2019-04-23 | 2019-07-26 | 江苏捷尔特智能气动系统有限公司 | Pressure-adjustable gas spring, lifting device and lifting table |
| CN110306898A (en) * | 2019-06-11 | 2019-10-08 | 深圳市华星威科技有限公司 | Electric stand |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20150620 |
|
| EXPY | Termination of patent right or utility model |