CN107246451B - Pressure adjustable gas spring - Google Patents
Pressure adjustable gas spring Download PDFInfo
- Publication number
- CN107246451B CN107246451B CN201710426082.XA CN201710426082A CN107246451B CN 107246451 B CN107246451 B CN 107246451B CN 201710426082 A CN201710426082 A CN 201710426082A CN 107246451 B CN107246451 B CN 107246451B
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- cylinder barrel
- valve body
- hole
- outer cylinder
- plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/062—Bi-tubular units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
Abstract
The invention discloses a pressure adjustable gas spring, which comprises: an outer cylinder barrel with openings at two ends; the inner cylinder barrel is positioned in the outer cylinder barrel, two ends of the inner cylinder barrel are provided with openings, and a floating isolation piston is arranged between the inner cylinder barrel and the outer cylinder barrel; one end of the piston rod is provided with a first piston and is positioned in the inner cylinder barrel; one end of the valve body is positioned in the outer cylinder and is provided with a first sealing part, and the other end of the valve body is positioned in the inner cylinder and is provided with a second sealing part; one end of the control component plugs the second hole under the pressure of the liquid medium; the valve body can move along the axial direction of the outer cylinder barrel and the inner cylinder barrel; the adjusting component can enable the valve body to move axially along the outer cylinder barrel and the inner cylinder barrel, one end of the adjusting component penetrates through the second plug and abuts against the valve body, the other end of the adjusting component is exposed in the air, a through hole is formed in the adjusting component, and one end of the control component penetrates through the second hole in the valve body and the through hole in the adjusting component in sequence and then is exposed in the air. The invention can adjust the internal pressure of the gas spring.
Description
Technical Field
The invention relates to a pressure adjustable gas spring.
Background
The gas spring mainly comprises a cylinder barrel, a piston in the cylinder barrel, a piston rod, a valve rod and the like, wherein gas and oil liquid are stored in the cylinder barrel. Because the piston occupies the volume in the cylinder barrel, the piston rod is pressed into the cylinder barrel during operation, the piston makes axial movement in the cylinder barrel to extrude oil, and the oil compresses gas to enable the piston to reach the working position; when the external force loaded on the piston rod disappears, the gas recovers and expands, the expanded gas pushes the oil to reset the piston, the piston rod is moved out, and the gas spring realizes compression motion and recovery damping motion.
The utility model discloses a utility model with publication number CN202402546U discloses a rigid locking seat lifting air spring, as shown in FIG. 5, including a cylinder 5, a piston rod 1, a valve body 10 and a valve core 11, a guide sleeve 2 and a guide seal ring 3 are sleeved on the piston rod 1 and installed in the cylinder 5, one end of the piston rod 1 penetrates out of the cylinder 5, the other end is provided with a piston 8, an inner sleeve 6 is fixed in the cylinder 5 through a front support 4 with damping air holes 4-1 at both ends and a valve body 10 with damping oil holes 10-1, the piston 8 is hermetically arranged in the inner sleeve 6 and divides the inner sleeve 6 into a front inner air cavity 18 and a rear inner oil cavity 16; the valve body 10 is connected with the cylinder 5 and the inner sleeve 6 in a sealing mode, the valve core 11 is installed on the valve body 10 through the wear-resistant sleeve 15, an oil hole 15-1 is formed in the wear-resistant sleeve 15, a valve cover at the front end of the valve core 11 corresponds to a valve seat 9 on the valve body 10, the rear end of the valve core 11 extends out of the valve body 10 and corresponds to the starting rod 13, the starting rod 13 is installed at the rear portion of the cylinder 5 through the rear support 12, the floating isolation piston 7 is installed between the cylinder 5 and the inner sleeve 6 in a sealing mode and divides a cavity between the cylinder 5 and the inner sleeve 6 into a front outer air cavity 19 and a rear outer oil cavity 17, the front inner air cavity 18 is communicated with the front outer air cavity 19 through a damping air hole 4-1 in the front support 4, and the rear outer oil cavity 17 is communicated with the rear inner oil cavity 16 through the damping oil hole 10-1 in the valve body 10 and the oil hole 15-1 in the wear-resistant sleeve 15.
For the gas spring, when the load is greater than the internal pressure of the gas spring, the piston rod 2 can not be normally extended or can not be fully extended in place, the pressure-adjustable gas spring solves the problem, and when the load is greater than the pressure of the gas spring by a certain weight, the extension force and the compression force can be adjusted by adjusting the volume of the space of the gas cavity through the pressure adjusting shaft.
Disclosure of Invention
In order to solve the technical problems, the invention provides a pressure-adjustable gas spring.
The technical scheme of the invention is as follows:
pressure adjustable gas spring includes: the two ends of the outer cylinder barrel are provided with openings, one end of the outer cylinder barrel is provided with a first plug with a first through hole, and the other end of the outer cylinder barrel is provided with a second plug with a second through hole;
the inner cylinder barrel is positioned in the outer cylinder barrel, openings are formed in two ends of the inner cylinder barrel, and a floating isolation piston is arranged between the inner cylinder barrel and the outer cylinder barrel;
one end of the piston rod is provided with a first piston and is positioned in the inner cylinder barrel, and the other end of the piston rod is in clearance fit with one end of the inner cylinder barrel and then penetrates through the first plug to extend out of the outer cylinder barrel;
the valve body is provided with a first hole for liquid medium to flow through and a second hole communicated with the first hole, the first hole is arranged along the radial direction of the valve body, and the second hole is arranged along the axial direction of the valve body;
the control component controls the liquid medium to flow through the valve body, and one end of the control component plugs the second hole under the pressure of the liquid medium;
the valve body can move along the axial direction of the outer cylinder barrel and the inner cylinder barrel;
the valve body is arranged on the second plug, one end of the adjusting assembly penetrates through the second plug to abut against the valve body, the other end of the adjusting assembly is exposed in the air, a through hole is formed in the adjusting assembly, and one end of the control component is exposed in the air after penetrating through the second hole in the valve body and the through hole in the adjusting assembly in sequence.
The invention has the beneficial effects that: the position of the valve body can be adjusted through the adjusting assembly, the oil cavity is arranged between the valve body and the floating isolation piston, the floating piston is forced to move after the adjusting assembly is adjusted because hydraulic oil is an incompressible medium, the floating isolation piston compresses nitrogen of the air cavity, the internal pressure is increased because the volume of the air cavity is reduced, so that the area for loading the gas is compressed, the internal pressure is increased, and the function of adjusting the pressure is achieved. During reverse adjustment, because of certain pressure in the floating isolation piston, the floating isolation piston is upwards moved by the pressure of the lower end air cavity to upwards push the hydraulic oil of the upper end oil cavity and the control valve, so that the volume of the air cavity is increased, and the lower pressure can be reduced and the air spring piston rod is easily pressed down when the air spring piston rod is compressed.
The pressure adjustable gas spring solves the problem that rigid locking in the prior art is not achieved, and the problem that the gas spring cannot be normally extended after a load becomes heavy is solved.
Drawings
FIG. 1 is a schematic cross-sectional view of a first pressure-regulated gas spring in accordance with the present invention;
FIG. 2 is a schematic view of an embodiment of a second pressure tunable gas spring in accordance with the present invention;
FIG. 3 is a schematic view of another embodiment of a second pressure adjustable gas spring in accordance with the present invention;
FIG. 4 is a cross-sectional schematic view of a third pressure adjustable gas spring in accordance with the present invention;
fig. 5 is a schematic view of a prior art rigid locking seat lift gas spring.
Reference numbers in the drawings shown in figures 1 to 3:
the piston type hydraulic cylinder comprises an outer cylinder barrel 1, a first plug 2, a second plug 3, an inner cylinder barrel 4, a floating isolation piston 5, a piston rod 6, a first piston 6, a ventilating support 7, a radial expansion part 7a, a support 8, a valve body 9, a first sealing part 9a, a second sealing part 9b, a first hole 9c, a second hole 9d, a spacer 9e, a sealing ring 9f, a control part 10a, a protrusion 10a, a sleeve 11, a rotating sleeve 12, a radial protrusion 12a, an axial extension 12b, a hollow shaft 13, a guide part 13a, a gland 14, a bearing 15 and a shaft sleeve 16.
Detailed Description
The first embodiment:
as shown in fig. 1, the pressure adjustable gas spring of the present invention includes an outer cylinder, an inner cylinder, a floating isolation piston, a piston rod, a valve body, and an adjusting assembly, and the structure of each part and the relationship between them are explained in detail below:
the both ends of outer cylinder 1 have the opening, and the one end setting of outer cylinder 1 has first end cap 2 of first through-hole, and the other end setting of outer cylinder has second end cap 3 of second through-hole, and first end cap 2 and second end cap 3 preferentially adopt the mode of interference and the cooperation of outer cylinder 1. The both ends of interior cylinder 4 have the opening, and interior cylinder 4 is located outer cylinder.
The floating isolation piston 5 is arranged between the inner cylinder and the outer cylinder, the floating isolation piston 5 divides the outer cylinder 1 into two areas, the area on one side of the floating isolation piston 5 is an area loaded with liquid medium (such as oil), the area on the other side of the floating isolation piston 5 is an area loaded with gas (such as nitrogen), and when the pressures of the areas on the two sides are changed, the floating isolation piston 5 can move along the axial direction of the outer cylinder 1.
One end of the piston rod 6 is provided with a first piston 6a and is positioned in the inner cylinder 4, and the other end of the piston rod 6 is in clearance fit with one end of the inner cylinder 4 and then passes through the first plug to extend out of the outer cylinder so as to be exposed in the air; the inner cylinder 4 is divided into two areas by the piston rod 6 and the first piston 6a arranged on the piston rod 6, the area at one side of the first piston 6a is an area loaded with liquid medium (such as oil), the area at the other side of the first piston 6a is an area loaded with gas (such as nitrogen), when the pressures of the areas at the two sides are changed, the piston rod 6 and the first piston 6a can move along the axial direction of the inner cylinder 4, so that the piston rod 6 generates stretching or contracting action to drive a load connected with the end part of the piston rod 6 exposed to the air to generate corresponding action, such as the load is lifted or lowered in the longitudinal direction or the load is fed or retracted in the transverse direction.
The inner cylinder barrel 4 is internally provided with a ventilating support 7, one end of the ventilating support 7 is positioned in the inner cylinder barrel 4, the ventilating support 7 is provided with a central hole, the piston rod 6 penetrates through the central hole in the ventilating support 7, so that the piston rod 6 is in clearance fit with the ventilating support 7, the ventilating support 7 is provided with a radial expansion part 7a, the other end of the ventilating support 7 is positioned outside the inner cylinder barrel 4, the radial expansion part 7a is arranged on the part of the ventilating support 7 positioned outside the inner cylinder barrel 4, and the radial expansion part 7a is matched with the outer cylinder barrel 1, so that the inner cylinder barrel 4 is supported in the outer cylinder barrel 1 through the ventilating support 7, and the radial expansion part 7a is provided with a ventilating hole which communicates the gas-loaded area of the outer cylinder barrel 1 with the gas-loaded area of the inner cylinder barrel 4, so that the ventilating support 7 is installed and the gas-loaded area of the outer cylinder barrel 1 and the inner cylinder barrel 4 cannot be blocked. The gas-permeable support 7 and the first plug 2 have a gap or clearance therebetween, and when the gap is formed, a support 8 coated with a sealing member is disposed between the gas-permeable support 7 and the first plug 2, so that a cavity is formed between the gas-permeable support 7 and the support 8, thereby facilitating smooth gas flow between the gas-containing region of the outer cylinder 1 and the gas-containing region of the inner cylinder 4.
One end of the valve body 9 is positioned in the outer cylinder and is provided with a first sealing part 9a, the other end of the valve body 9 is positioned in the inner cylinder and is provided with a second sealing part 9b, the valve body 9 is provided with a first hole 9c for a liquid medium to flow through and a second hole 9d communicated with the first hole, the first hole 9c is arranged along the radial direction of the valve body 9, the second hole 9d is arranged along the axial direction of the valve body 9, a spacer 9e is arranged in the second hole 9d, the spacer 9e is provided with an opening for the liquid medium to flow through, and sealing rings 9f positioned at two ends of the spacer 9e are further arranged in the second hole 9 d. The valve body 9 is a valve body capable of moving along the axial direction of the outer cylinder barrel and the inner cylinder barrel, preferably, the valve body 9 is in spaced fit with the outer cylinder barrel 1, and the valve body 9 is in spaced fit with the inner cylinder barrel 4, and the liquid medium in the outer cylinder barrel 1 is sealed through the first sealing part 9a, so that the liquid medium in the outer cylinder barrel 1 is prevented from flowing out through a gap between the valve body 9 and the outer cylinder barrel. The liquid medium in the inner cylinder 2 is sealed by the second seal member 9b to prevent the liquid medium in the inner cylinder 4 from flowing between the region of the outer cylinder 1 where the liquid medium is loaded and the region of the inner cylinder 4 where the liquid medium is loaded without being controlled by the valve body 9 and the control member 10.
The control component 10 controls the liquid medium to flow through the valve body, the control component 10 is in a rod shape, and one end of the control component 10 seals the second hole under the pressure of the liquid medium.
The adjusting component can make the valve body 9 move axially along the outer cylinder barrel 1 and the inner cylinder barrel 4, the adjusting component is arranged on the second plug 3, one end of the adjusting component penetrates through the second plug 3 to abut against the valve body 9, the other end of the adjusting component is exposed in the air, a through hole is formed in the adjusting component, and one end of the control component 10 is exposed in the air after penetrating through the second hole in the valve body and the through hole in the adjusting component in sequence. The second through hole on the second plug 3 is a threaded hole, the adjusting assembly comprises a sleeve 11, threads are arranged on the outer circumferential surface of the sleeve 11, the sleeve 11 extends into the second through hole to be in threaded connection with the second plug 3, and through the forward rotation sleeve 11, axial feeding acting force is applied to the valve body 9 when the sleeve 11 is fed, so that the valve body 9 moves towards the piston rod 6, and as the liquid medium is not easy to compress or can not be compressed, the acting force acts on the floating isolation piston 5 to move the floating isolation piston, so that gas in a gas-loading area is compressed, and thus, the gas-loading area is reduced, and conversely, the pressure generated by the gas is higher. When the sleeve 11 is rotated reversely, the sleeve 11 retracts, the area for loading the gas becomes larger, and the pressure generated by the gas becomes smaller, so that the pressure generated by the gas changes through the forward rotation and reverse rotation of the sleeve 11, and the overall pressure of the gas spring can be adjusted as required. The control component 10 is provided with a radial protrusion 10a, the through hole on the sleeve 11 is a step hole, and the step surface of the step hole can limit the protrusion 10a axially.
The second embodiment:
the present embodiment is different from the above embodiments in that the structure of the adjustment assembly is different, and the specific structure of the adjustment assembly in the present embodiment is as follows:
as shown in fig. 2 and 3, the adjusting assembly includes: rotating sleeve 12, hollow shaft 13, gland 14. The rotating sleeve 12 is rotatably arranged on the second plug, the rotating sleeve is axially limited on the second plug, the gland 14 is provided with an assembly hole, a radial bulge 12a is arranged on the outer peripheral surface of the rotating sleeve 12, the gland 14 is sleeved on the rotating sleeve 12 and pressed on the radial bulge 12a of the rotating sleeve 12, and then the gland 14 is fixedly connected with the second plug 3 so as to axially limit the rotating sleeve 12. The assembly hole on the gland 14 is a step hole, the step surface of the step hole is abutted against the radial protrusion 12a on the rotating sleeve 12, in a preferred mode, the rotating sleeve 12 and the radial protrusion 12a are respectively in clearance fit with the step hole on the gland 14, so that the rotating sleeve 12 is axially limited, the rotating sleeve 12 is limited in the radial direction, and the rotating sleeve 12 can freely rotate.
One end of the hollow shaft 13 passes through the second plug 3 and abuts against the valve body 9, and the axial end face of the other end of the hollow shaft 13 is a curved surface (such as a cam curved surface), or an inclined surface, or an asymmetric spherical surface; the inner wall surface of the through hole of the rotating sleeve 12 is provided with a curved surface or an inclined surface or an asymmetric spherical surface which is matched with the surface of the hollow shaft 13, in the embodiment shown in fig. 2, the hollow shaft 13 is matched with the rotating sleeve 12 through the asymmetric spherical surface, and in the embodiment shown in fig. 3, the hollow shaft 13 is matched with the rotating sleeve 12 through the inclined surface. When the rotating sleeve 12 is rotated, the rotating sleeve 12 and the hollow shaft 13 are pressed against each other through a curved surface, or through mutual pressing of an inclined surface, or through mutual pressing of asymmetrical spherical surfaces, so that the hollow shaft is axially displaced. In order to prevent the hollow shaft 13 from rotating with the rotary sleeve 12 due to friction, a guide member 13a is provided on the outer circumferential surface of the hollow shaft 13, a guide groove is provided on the inner wall surface of the second through hole of the second choke plug 3, and the guide member 13a is in clearance fit in the guide groove, so that when the rotary sleeve 12 is rotated, although there is friction between the rotary sleeve 12 and the hollow shaft 13, the hollow shaft 13 is restricted in the circumferential direction by the combination of the guide member 13a and the guide groove, and therefore, the hollow shaft 13 cannot rotate, and the hollow shaft 13 only moves in the axial direction.
The third embodiment:
the present embodiment is different from the second embodiment in that, in addition to the second embodiment (as shown in fig. 4), an annular groove is provided on an axial end surface of the second plug 3, an annular axially extending portion 12b is provided on one end of the rotating sleeve 12, and the axially extending portion 12b is mounted in the annular groove of the second plug 3 through a bearing 15, and 2 bearings 15 are preferably used in the present embodiment. The axial extension 12b is sleeved with a sleeve 16, the sleeve 16 separates the two bearings 15 and axially limits one end of each bearing 15, the other end of one bearing is axially limited by the bottom of the annular groove, and the other end of the other bearing 15 is axially limited by the radial protrusion 12a, so that the bearings can be prevented from axially shifting.
In addition, the pressure-adjustable gas spring can be applied to office furniture, including office chairs, office tables and the like, medical equipment, fitness equipment, civil furniture including bar chairs, coffee tables and the like, and gas springs for automobiles, various mechanical equipment and the like need rigid telescopic adjustment, so that the application range is wider, the integral structure is simpler, and the production cost is saved.
Claims (7)
1. A pressure adjustable gas spring comprising: the two ends of the outer cylinder barrel are provided with openings, one end of the outer cylinder barrel is provided with a first plug with a first through hole, and the other end of the outer cylinder barrel is provided with a second plug with a second through hole;
the inner cylinder barrel is positioned in the outer cylinder barrel, two ends of the inner cylinder barrel are provided with openings, and a floating isolation piston is arranged between the inner cylinder barrel and the outer cylinder barrel; one end of the piston rod is provided with a first piston and is positioned in the inner cylinder barrel, and the other end of the piston rod is in clearance fit with one end of the inner cylinder barrel and then penetrates through the first plug to extend out of the outer cylinder barrel; the valve body, one end of the valve body locates in outer cylinder and has the first seal part, another end of the valve body locates in inner cylinder and has the second seal part, there are first holes for the liquid medium to flow through and second holes communicated with first hole on the valve body, the first hole is arranged along radial of the valve body, the second hole is arranged along axial of the valve body;
the control component controls the liquid medium to flow through the valve body, and one end of the control component seals the second hole under the pressure of the liquid medium;
the valve body is characterized in that the valve body can move along the axial directions of the outer cylinder barrel and the inner cylinder barrel; the valve body is arranged on the first plug, one end of the adjusting component penetrates through the first plug to be abutted against the valve body, the other end of the adjusting component is exposed in the air, the adjusting component is provided with a through hole, and one end of the control component penetrates through the first hole in the valve body and the through hole in the adjusting component in sequence and then is exposed in the air;
the adjustment assembly includes: the rotating sleeve is rotatably arranged on the second plug and axially limited on the second plug;
one end of the hollow shaft penetrates through the second plug and abuts against the valve body, and the axial end face of the other end of the hollow shaft is a curved surface or an inclined surface;
the inner wall surface of the through hole of the rotating sleeve is provided with a curved surface or an inclined surface matched with the surface of the hollow shaft, and when the rotating sleeve is rotated, the rotating sleeve and the hollow shaft are extruded through the curved surface or the inclined surface, so that the hollow shaft generates axial displacement.
2. The pressure adjustable gas spring as claimed in claim 1, wherein a guide member is provided on an outer peripheral surface of the hollow shaft, and a guide groove is provided on an inner wall surface of the second through hole, the guide member being clearance fitted in the guide groove.
3. The pressure adjustable gas spring as recited in claim 1, further comprising a gland having a mounting hole, wherein the outer circumferential surface of the rotating sleeve is provided with a radial protrusion, the gland is sleeved on the rotating sleeve and pressed on the radial protrusion of the rotating sleeve, and the gland is fixedly connected with the second plug so as to axially limit the rotating sleeve.
4. The pressure adjustable gas spring as set forth in claim 3, wherein said mounting opening in said gland is a stepped bore having a stepped surface that abuts a radial projection on said swivel sleeve.
5. The pressure adjustable gas spring as claimed in claim 3, wherein an annular groove is formed in an axial end surface of the second plug, and one end of the rotating sleeve is mounted in the annular groove through a bearing.
6. The pressure adjustable gas spring as claimed in any one of claims 1 to 5, wherein the inner cylinder has a gas permeable support provided with a central hole, the piston rod passes through the central hole of the gas permeable support, the gas permeable support is provided with a radially expanded portion which fits the outer cylinder, and the radially expanded portion is provided with gas permeable holes.
7. Use of a pressure-regulated gas spring according to any one of claims 1 to 6, in office furniture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710426082.XA CN107246451B (en) | 2017-06-08 | 2017-06-08 | Pressure adjustable gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710426082.XA CN107246451B (en) | 2017-06-08 | 2017-06-08 | Pressure adjustable gas spring |
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| Publication Number | Publication Date |
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| CN107246451A CN107246451A (en) | 2017-10-13 |
| CN107246451B true CN107246451B (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710426082.XA Active CN107246451B (en) | 2017-06-08 | 2017-06-08 | Pressure adjustable gas spring |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167372A (en) * | 2018-02-26 | 2018-06-15 | 苏世博（南京）减振系统有限公司 | A kind of telescopic system device |
| CN109236927A (en) * | 2018-11-13 | 2019-01-18 | 徐州东宏机械制造有限公司 | A kind of two-tube gas spring device |
| CN110397693A (en) * | 2019-07-10 | 2019-11-01 | 北京磊焱氮气弹簧技术研究所 | One kind filling constant force controlling type Oil-gas Separation gas spring power device again |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885777A (en) * | 1969-10-29 | 1975-05-27 | Bourcier Carbon Christian | Level corrector for shock absorbers |
| US5273259A (en) * | 1990-03-21 | 1993-12-28 | Suspa Compart Aktiengesellschaft | Longitudinally adjustable gas spring |
| US6105988A (en) * | 1997-07-16 | 2000-08-22 | Rockshox, Inc. | Adjustable suspension system having positive and negative springs |
| JP2002303345A (en) * | 2001-04-05 | 2002-10-18 | Kayaba Engineering & Service Kk | Gas spring |
| TW517800U (en) * | 2001-12-18 | 2003-01-11 | Jung-Jr Gau | Pneumatic shaft capable of adjusting pressure |
| CN202402546U (en) * | 2011-12-09 | 2012-08-29 | 常州气弹簧有限公司 | Lifting air spring of rigidity locking seat |
| CN104235251A (en) * | 2013-06-07 | 2014-12-24 | 陈月英 | A double-barrel multi-chamber spring with an adjustable stroke |
| CN106352004A (en) * | 2016-10-20 | 2017-01-25 | 安徽莱特气弹簧有限公司 | Rigid locking pneumatic rod |
| CN207005175U (en) * | 2017-06-08 | 2018-02-13 | 常州市莱特气弹簧有限公司 | Pressure adjustable gas spring |
-
2017
- 2017-06-08 CN CN201710426082.XA patent/CN107246451B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885777A (en) * | 1969-10-29 | 1975-05-27 | Bourcier Carbon Christian | Level corrector for shock absorbers |
| US5273259A (en) * | 1990-03-21 | 1993-12-28 | Suspa Compart Aktiengesellschaft | Longitudinally adjustable gas spring |
| US6105988A (en) * | 1997-07-16 | 2000-08-22 | Rockshox, Inc. | Adjustable suspension system having positive and negative springs |
| JP2002303345A (en) * | 2001-04-05 | 2002-10-18 | Kayaba Engineering & Service Kk | Gas spring |
| TW517800U (en) * | 2001-12-18 | 2003-01-11 | Jung-Jr Gau | Pneumatic shaft capable of adjusting pressure |
| CN202402546U (en) * | 2011-12-09 | 2012-08-29 | 常州气弹簧有限公司 | Lifting air spring of rigidity locking seat |
| CN104235251A (en) * | 2013-06-07 | 2014-12-24 | 陈月英 | A double-barrel multi-chamber spring with an adjustable stroke |
| CN106352004A (en) * | 2016-10-20 | 2017-01-25 | 安徽莱特气弹簧有限公司 | Rigid locking pneumatic rod |
| CN207005175U (en) * | 2017-06-08 | 2018-02-13 | 常州市莱特气弹簧有限公司 | Pressure adjustable gas spring |
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| Publication number | Publication date |
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| CN107246451A (en) | 2017-10-13 |
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