CN100460706C - Intelligent gas spring - Google Patents
Intelligent gas spring Download PDFInfo
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- CN100460706C CN100460706C CNB2006100209347A CN200610020934A CN100460706C CN 100460706 C CN100460706 C CN 100460706C CN B2006100209347 A CNB2006100209347 A CN B2006100209347A CN 200610020934 A CN200610020934 A CN 200610020934A CN 100460706 C CN100460706 C CN 100460706C
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- gas spring
- intelligent gas
- automobile
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- 239000012530 fluid Substances 0.000 claims description 10
- 229920000297 Rayon Polymers 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000013016 damping Methods 0.000 abstract description 12
- 230000035939 shock Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 18
- 238000007906 compression Methods 0.000 description 18
- 230000008859 change Effects 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The intelligent gas spring includes a casing, an inner cylinder with cylinder cap and piston to separate the space inside the casing into main gas chamber and subsidiary gas chamber communicated through an on-off gas channel, and a stroke valve installed on the inner cylinder cap to suit with the damping cylinder on the piston. The gas channel may be opened or closed accurately and timely based on the varying road condition so as to regulate the rigidity of the gas spring intelligently to suit for different road condition. The present invention has excellent shock absorbing performance to make the automobile possess high riding comfort and excellent operation stability, and may be installed widely in various kinds of automobile.
Description
Technical field:
The present invention relates to the draft hitch of Motor Vehicle, belong to the technical field of automotive engineering, specifically a kind of intelligent gas spring is specially adapted to install and use on automobile.
Background technique:
Along with high speed development and people's living standard of Chinese national economy improves constantly, effectively advanced the automotive industry fast development, just present, the means of transportation that past becomes people's daily life gradually as the car and the microbus of high-grade luxury goods, people pursue the travelling comfort of taking more when going on a journey by bus.In the vehicle driving way, wheel will rise and fall with the road surface, vehicle frame be produced impact every now and then, and this impact energy mainly is to be absorbed by the elastic element in the automobile suspension system, and the vibration of vehicle frame is to be decayed by vibration damper.So-called suspension system is exactly the carrying power transmission damping device that is connected between the upper and lower swing arm of automobile, the technical performance of suspension directly influences the riding comfort of automobile and handles stationarity, being an important parameter weighing the automotive engineering quality index, also is the important evidence that the Consumer chooses vehicle.Up to now, the elastic element that uses in existing automobile suspension system has several types such as helical spring, hydro-pneumatic spring and pneumatic spring, simple in structure, advantages of cheap price that helical spring has, but its elasticity coefficient is fixed, its rigidity does not change with road conditions complicated and changeable, damping effect is relatively poor, needs configuration vibration damper in addition in actual use.Active suspensions such as hydro-pneumatic spring and pneumatic spring vibration damper assembly are guaranteeing to possess good control stability under the prerequisite of riding comfort, but it must cooperate with computer controlled system and could change spring rate and damping damping constant at regular time and quantity with road condition change, owing to its complex structure, maintenance difficult, cost an arm and a leg, only limitation being used on the comparatively high-grade vehicle at present.Chinese patent CN2700639Y discloses the patented technology that a kind of name is called " the pneumatic spring vibration damper that becomes rigidity and change damping automatically ", its feature is: have the pneumatic spring of air valve ASSY and design to have the vibration damper of orifice valve assembly integrated design, the main gas tank of the pneumatic spring of being separated by piston and the lower oil chamber of fluid vibration damper are separated type coenosarc structure, vehicle is when wheel rise and fall to drive piston and moves up and down with the road surface under steam, it can regulate the rigidity of variation pneumatic spring automatically and the damping of fluid vibration damper adapts to road conditions, has improved the travelling comfort and the stationarity of automobile running.But this " becoming the pneumatic spring vibration damper of rigidity and change damping automatically " exists the technical problem of " adjusting changes rigidity and damping causes gas leakage because piston frequently moves back and forth " in actual use, still is difficult to thorough solution so far.
Summary of the invention:
The present invention proposes on the prior art basis that a kind of structure is very simple and direct, low cost of manufacture, volume compact space flexible arrangement, can be applicable to the intelligent gas spring that various vehicles assemblings are used.It is achieved by the following technical solution: it is that inner cylinder body is installed in housing, interior cylinder cap is installed on inner cylinder body, the piston separation inner cylinder body that is fitted in the inner cylinder body is main gas tank and accessory air-space, do the keying air flue that is communicated with main gas tank in the interior cylinder cover wall, on the wall of inner cylinder body, do the through hole that is communicated with accessory air-space, it is characterized in that: the keying air flue place at interior cylinder cap is fitted with the stroke valve, on piston, do the damped cylinder that adapts with the stroke valve, in the damped cylinder of piston, fill fluid, the keying air flue that is provided with in interior cylinder cap is controlled its unlatching by the stroke valve or is closed, the screw rod that is useful on fixedly connected vehicle frame top link is done at upper end cap top at housing, is fitted with on the piston rod of piston to be used for fixing the coupling that connects swing arm under the wheel.When the automobile of the intelligent gas spring that the present invention's proposition is installed travels on the road surface of fluctuating, wheel will move along inner cylinder body is upper and lower by the piston rod drive piston that is connected in down swing arm along with the road surface rises and falls, and show as the compression or the elongation of intelligent gas spring.When the upper and lower mobile range of piston less, in being installed on the stroke valve of cylinder cap do not enter in the damped cylinder of piston that section stroke we cry and be soft stroke, when the upper and lower mobile range of piston bigger, the stroke valve enter in the damped cylinder of piston that section stroke we cry and be hard stroke.It is work like this: travel on automobile is rising and falling less road surface, wheel is less with the amplitude that road surface fluctuating drive piston moves up and down, the stroke valve does not enter in the damped cylinder of piston, be compression and when elongation of intelligent gas spring in soft stroke: the stroke valve is in opens the opening state that opens and closes air flue, at this moment main gas tank and accessory air-space are communicating state with the compression to piston of the gas fellowship of larger volume, and on the piston, the lower end surface is subjected to rightabout gas pressure in main gas tank and the accessory air-space respectively, the useful area of the actual pressurized of piston only is the area of section of piston rod, that is to say compression or when elongation of intelligent gas spring in soft stroke, its rigidity is very little, shows as to satisfy well to have good riding comfort when automobile is crossed middle-size and small-size obstacle with middle low speed; When automobile drives towards when crossing big obstacle or falling into big pit downwards in that the road surface of big rise and fall is up, wheel rise to drive amplitude that piston moves up when big with respect to vehicle frame, the stroke valve enters the interior process of damped cylinder of piston, be the compression of intelligent gas spring in hard stroke: the pressure that the spool of stroke valve is subjected to air gas medium in the damped cylinder moves up, the stroke valve will cut out blocking-up immediately and open and close air flue, in order to narrate conveniently, we are called the pressurized gas in the main gas tank elastic force of main spring to the active force of piston upper-end surface, the elastic force that pressurized gas in the accessory air-space is called auxiliary spring to the active force of piston lower surface, when the stroke valve cuts out blocking-up keying air flue, have only the compression of the gas participation of smaller size smaller in the main gas tank to the piston upper-end surface, the elastic force of main spring will be with moving on the piston and increase rapidly, simultaneously the elastic force of auxiliary spring also will be with moving on the piston and reduce, that is to say compressing section at hard stroke, because main spring and auxiliary spring interact together, the rigidity of intelligent gas spring will automatically increase rapidly with the increase of compression stroke, the severe impact of being come by the wheel transmission when showing as intelligent gas spring and can bear and resist reposefully automobile and cross big obstacle or fall into big pit with middle low speed; After automobile is just being crossed big obstacle and pit, wheel drives piston with respect to vehicle frame decline and moves down, the process that the stroke valve withdraws from the damped cylinder of piston, it is the elongation of intelligent gas spring in hard stroke: intelligent gas spring changes elongation into by compression in hard stroke moment, the pressure of air gas medium reduces in the damped cylinder, the spool of stroke valve will move down fast, the stroke valve is opened the keying air flue, at this moment the pressure in the main gas tank reduces significantly, the elastic force and the rigidity of intelligent gas spring also reduce rapidly, show as that automobile has just cleared the jumps or pit after the vehicle frame acceleration that makes progress little, and after can avoiding wheel to clear the jumps liftoff trend is arranged, guarantee that automobile has the stationarity of good riding comfort and manipulation.
The present invention also has following technical characteristics:
In accessory air-space, fill fluid, can guarantee that piston type frequently reciprocating and stroke valve all have good lubrication state when entering or withdraw from damped cylinder, spool can be moved to quick and stable, can also stop the pressurized gas in the accessory air-space to leak effectively, improve to regulate sensitivity, validity and the reliability of intelligent gas spring rigidity, further improve the riding comfort in the automobile running way and the stationarity of manipulation.
On housing, done the pressure regulation pore, aiming to connect to be equipped with used by the air inlet-outlet pipe of electromagnetic valve, can be by the electrical signal of executive circuit according to the overall height sensor acquisition, the control electromagnetic valve action is carried out aerating or exhaust to intelligent gas spring, can regulate the road clearance of automotive body easily, help by various roadblock things, and can on good road surface, run at high speed the time, turn down vehicle body easily, can reduce windage, shorten the soft stroke of intelligent gas spring, guarantee that automobile has good riding comfort and control stability in the way of running at high speed.
Be fitted with crashproof blob of viscose in the lower end of housing, can effectively prevent to cause down swing arm and lower end cap rigid collision because of wheel meets with large impact, and can slow down effectively just in case intelligent gas spring damages generation leakage release of pressure, vehicle frame stays the rigidity contact-impact that is caused fast.
On the spool of stroke valve, be fitted with spring, can make the valve core reset of stroke valve reliable rapidly, can improve the sensitive validity and the reliability of regulating intelligent gas spring rigidity effectively, further improve the riding comfort in the automobile running way and the stationarity of manipulation.
Outstanding substantive distinguishing features and remarkable progress of the present invention is: cover at inner casing the stroke valve that the damped cylinder with piston adapts is installed, the stroke valve can be automatically along with the keying air flue that is communicated with main gas tank and accessory air-space is in time opened or closed to road condition change, in time change the gas volume that participates in Piston Compression, thereby realize automatically along with the purpose that the rigidity that changes intelligent gas spring adapts to road condition change is accurately regulated in the fluctuating on road surface.Its outstanding advantage shows: when automobile in the process of moving, the fluctuations and the accurately and timely automatic rigidity of regulating intelligent gas spring of the various complex road surfaces of perception adapt to road condition change delicately for it, it has tangible intelligent control characteristic, its damping performance is very superior, it is distinctive follow automatically the road surface rise and fall the good damping performance of promptly and accurately regulating its rigidity reliably surmounted existing vibration damper institute greatly can role, need not to dispose again in addition dampening arrangement when as installed is used on automobile, can guarantee that also automobile has splendid riding comfort and good control stability.
Description of drawings:
Accompanying drawing is a structural representation of the present invention.
Embodiment:
Intelligent gas spring proposed by the invention is to implement like this: it is to be installed with upper end cap 9, the housing 5 of lower end cap 2, on upper end cap 9, do the screw rod 11 that fixedly connected top link is used, at housing 5 internal fixation inner cylinder body 15 is installed, cylinder cap 8 on inner cylinder body 15, being equipped with, the piston 3 that is fitted in the inner cylinder body 15 is divided into main gas tank 6 and accessory air-space 16 with inner cylinder body 15, on the wall of inner cylinder body 15, do the through hole 17 that is communicated with accessory air-space 16, in interior cylinder cap 8 walls, do the keying air flue 12 that is communicated with main gas tank 6, on interior cylinder cap 8, be installed with control and open or block the stroke valve 13 that opens and closes air flue 12, on piston 3, do the damped cylinder 4 that adapts with stroke valve 13, in the damped cylinder 4 of piston 3, annotate fluid is housed, also can in accessory air-space 16, be loaded with fluid, be fitted with the coupling 19 of swing arm under the fixedly connected wheel in piston rod 1 lower end of piston 3, when on automobile, intelligent gas spring being installed, be fixedly connected on the top link of vehicle frame with screw rod 11, the following swing arm that is fixedly connected on wheel with the equipped coupling 19 in piston rod 1 lower end gets final product again.When travelling on the road surface that automobile is rising and falling, wheel drives piston 3 along inner cylinder body 15 upper and lower moving along with the road surface rises and falls by piston rod 1, promptly shows as the compression or the elongation of intelligent gas spring.The working principle of now it being regulated automatically rigidity under different road conditions is described below:
Compression and the elongation of intelligent gas spring in soft stroke:
On rising and falling less road surface, automobile travels, wheel drives on the piston 3, the amplitude that moves is less down, stroke valve 13 does not enter in the damped cylinder 4 of piston 3, at this moment stroke valve 13 is in and opens the opening state that opens and closes air flue 12, main gas tank 6 and accessory air-space 16 are communicating state will be with the compression to piston 3 of the gas fellowship of larger volume, and on the piston 3, the lower end surface is subjected to rightabout gas pressure in main gas tank 6 and the accessory air-space 16 respectively, the useful area of piston 3 pressurizeds only is the area of section of piston rod 1, compression or when elongation of intelligent gas spring in soft stroke, external general performance is that its rigidity is very little, can satisfy well to have good riding comfort when automobile is crossed middle-size and small-size obstacle with middle low speed.
The compression of intelligent gas spring in hard stroke:
When automobile is upwards crossed big obstacle or fallen into big pit, when wheel rises with respect to vehicle frame, the amplitude that wheel drive piston 3 moves up is bigger, when stroke valve 13 enters in the damped cylinder 4 of piston 3, the pressure that the spool 7 of stroke valve 13 is subjected to damped cylinder 4 inner fluid media moves up, stroke valve 13 will cut out to cut off and open and close air flue 12, at this moment have only the compression of the gas participation of smaller size smaller in the main gas tank 6 to piston 3 upper-end surfaces, the elastic force of main spring will be with moving on the piston 3 and increase rapidly, the elastic force of auxiliary spring also will be with moving on the piston 3 and reduce, the rigidity of intelligent gas spring will automatically increase rapidly with the increase of compression stroke, and the external general performance of intelligent gas spring is: the severe impact of being come by the wheel transmission when it can bear and resist reposefully automobile and crosses big obstacle with middle low speed or fall into big pit.
The elongation of intelligent gas spring in hard stroke:
When automobile is crossed big obstacle or big pit rear wheel and is descended with respect to vehicle frame, wheel drives piston 3 and moves down, when stroke valve 13 withdraws from the damped cylinder 4 of piston 3, damped cylinder 4 inner fluid pressure mediums reduce, the spool 7 of stroke valve 13 will move down fast, open and open and close air flue 12, at this moment main gas tank 6 and accessory air-space 16 recover communicating state again, the rigidity of intelligent gas spring is also decreased and reduce with the increase of extended travel, intelligent gas spring can in time extend after showing as wheel and crossing big obstacle or big pit, wheel can be descended by close proximity to ground, avoid car body to dive downwards, and the vehicle frame acceleration that makes progress is little after wheel is crossed pit, guarantees that automobile crosses under steam and has the stationarity of good riding comfort and manipulation when big obstacle falls into big pit.
On housing 5, do to aim at and connect the pressure regulation pore 14 that equipped air inlet-outlet pipe is used, by the electrical signal of executive circuit according to the overall height sensor acquisition, intelligent gas spring is carried out aerating or bleeding, the adjustable height of can regulate vehicle body, help by various roadblock things, when under good road conditions, running at high speed, adjustable low, reduce windage, guarantee that automobile has good riding comfort and control stability in the way of running at high speed.
Lower end cap 2 places at housing 5 are fitted with crashproof blob of viscose 18, can prevent to meet with lower end cap 2 rigid collision that large impact causes down swing arm and intelligent gas spring because of wheel, also can on the spool 7 of stroke valve 13, be equipped with spring 10, the spool 7 of stroke valve 13 can be resetted rapidly in time, the sensitive validity and the reliability of regulating intelligent gas spring rigidity be can improve, the riding comfort in the automobile running way and the stationarity of manipulation further improved.
Also main gas tank 6 and the equipped electromagnetic valve device of controlling according to the sensor electrical signal instruction by executive circuit in keying air flue 12 places of accessory air-space 16 can be communicated with, but accuracy controlling opens and closes air flue 12 open degree and gas flow parameter, turn at automobile, starting, when multinomial manipulation such as suddenly stopping, 12 the gas flow of holding one's breath is crossed in accuracy controlling unblank in time, and then the accuracy controlling main gas tank 6 interior gas flows that participate in Piston Compression, intelligent gas spring is shown as have the ability of very big compression stiffness, can prevent the automobile inclination of turning in the process of moving effectively, starting recoil and the anxious phenomenon of stopping and nodding.
In sum, the vehicle that intelligent gas spring proposed by the invention is installed can be according to the variation of various complex road conditions, the rigidity of accurately and timely regulating intelligent gas spring automatically adapts to its road condition change, have very superior damping performance, can guarantee that fully vehicle travels and all has splendid riding comfort and good control stability under various road conditions complicated and changeable.
Claims (5)
1. intelligent gas spring, it is that inner cylinder body (15) is installed in housing (5), interior cylinder cap (8) is installed on inner cylinder body (15), piston (3) the separation inner cylinder body (15) that is fitted in the inner cylinder body (15) is main gas tank (6) and accessory air-space (16), do the keying air flue (12) that is communicated with main gas tank (6) in interior cylinder cap (8) wall, on the wall of inner cylinder body (15), do the through hole (17) that is communicated with accessory air-space (16), it is characterized in that: the keying air flue (12) at interior cylinder cap (8) locates to be fitted with stroke valve (13), on piston (3), do the damped cylinder (4) that adapts with stroke valve (13), in the damped cylinder (4) of piston (3), fill fluid.
2. intelligent gas spring according to claim 1 is characterized in that: fill fluid in accessory air-space (16).
3. intelligent gas spring according to claim 1 and 2 is characterized in that: done pressure regulation pore (14) on housing (5).
4. intelligent gas spring according to claim 1 and 2 is characterized in that: be fitted with crashproof blob of viscose (18) in the lower end of housing (5).
5. intelligent gas spring according to claim 1 and 2 is characterized in that: be fitted with spring (10) on the spool (7) of stroke valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100209347A CN100460706C (en) | 2006-04-29 | 2006-04-29 | Intelligent gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100209347A CN100460706C (en) | 2006-04-29 | 2006-04-29 | Intelligent gas spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1858459A CN1858459A (en) | 2006-11-08 |
| CN100460706C true CN100460706C (en) | 2009-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100209347A Expired - Fee Related CN100460706C (en) | 2006-04-29 | 2006-04-29 | Intelligent gas spring |
Country Status (1)
| Country | Link |
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| CN (1) | CN100460706C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287469A (en) * | 2011-06-22 | 2011-12-21 | 杨洁 | Limiting buffer and capacity composite air spring capable of adjusting static stiffness |
| CN102330770A (en) * | 2011-07-12 | 2012-01-25 | 杨洁 | Composite air spring for limit buffer and pressure limit impact reduction |
| CN102367046A (en) * | 2011-10-18 | 2012-03-07 | 杨洁 | Air spring with function of regulating static stiffness by filler and regulating dynamic stiffness by pressure difference |
| CN102705419B (en) * | 2012-06-18 | 2014-01-15 | 三一重工股份有限公司 | Air spring vibration damper and vehicle |
| CN104421369B (en) * | 2013-08-19 | 2016-08-10 | 北汽福田汽车股份有限公司 | Hydro-pneumatic spring and vehicle |
| CN105402302B (en) * | 2015-12-21 | 2017-05-10 | 吉林大学 | Magneto-rheological sliding column integrated with air spring |
| CN108790661B (en) * | 2018-06-19 | 2019-12-13 | 四川立地车辆底盘科技有限公司 | Built-in capsule suspension gas spring |
| CN108547901B (en) * | 2018-06-19 | 2020-09-04 | 四川立地车辆底盘科技有限公司 | Method for adjusting rigidity of suspension gas spring |
| CN108528163B (en) * | 2018-06-19 | 2019-12-13 | 四川立地车辆底盘科技有限公司 | Automobile suspension double-capsule variable-stiffness gas spring |
| CN108638778B (en) * | 2018-06-19 | 2020-01-10 | 四川立地车辆底盘科技有限公司 | Built-in single capsule suspension gas spring |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0066299A1 (en) * | 1981-06-03 | 1982-12-08 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Hydraulic telescopic shock absorber for a motor vehicle |
| FR2679306A1 (en) * | 1991-07-15 | 1993-01-22 | Peugeot Motocycles Sa | Telescopic hydropneumatic suspension element particularly for a motor vehicle |
| CN2291531Y (en) * | 1997-06-20 | 1998-09-16 | 中国工程物理研究院机械制造工艺研究所 | Leak protection hydraulic damper |
| JP2004069064A (en) * | 2002-07-27 | 2004-03-04 | Stabilus Gmbh | Cylinder piston device |
| CN2680927Y (en) * | 2003-12-29 | 2005-02-23 | 陆杰 | After-damping-changed shock reducer |
| CN2700639Y (en) * | 2004-05-08 | 2005-05-18 | 杨德君 | Air spring shock damper capable of changing toughness and damping automatically |
-
2006
- 2006-04-29 CN CNB2006100209347A patent/CN100460706C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0066299A1 (en) * | 1981-06-03 | 1982-12-08 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Hydraulic telescopic shock absorber for a motor vehicle |
| FR2679306A1 (en) * | 1991-07-15 | 1993-01-22 | Peugeot Motocycles Sa | Telescopic hydropneumatic suspension element particularly for a motor vehicle |
| CN2291531Y (en) * | 1997-06-20 | 1998-09-16 | 中国工程物理研究院机械制造工艺研究所 | Leak protection hydraulic damper |
| JP2004069064A (en) * | 2002-07-27 | 2004-03-04 | Stabilus Gmbh | Cylinder piston device |
| CN2680927Y (en) * | 2003-12-29 | 2005-02-23 | 陆杰 | After-damping-changed shock reducer |
| CN2700639Y (en) * | 2004-05-08 | 2005-05-18 | 杨德君 | Air spring shock damper capable of changing toughness and damping automatically |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1858459A (en) | 2006-11-08 |
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Owner name: LESHAN LIDI XUANJIA TECHNOLOGY DEVELOPMENT CO., LT Free format text: FORMER OWNER: YANG DEJUN Effective date: 20141023 |
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Effective date of registration: 20141023 Address after: 614000 No. 49 Nanan Road, Shizhong District, Sichuan, Leshan Patentee after: Leshan site Suspension Technology Development Co., Ltd. Address before: 614000 Sichuan Province, Leshan City District Hui Yuan Jie comfort Park 5 unit 7-1 No. Patentee before: Yang Dejun |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20210429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |