CN203067641U - Guide anti-leakage gas spring of double oil seals and three body stabilization centers - Google Patents
Guide anti-leakage gas spring of double oil seals and three body stabilization centers Download PDFInfo
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- CN203067641U CN203067641U CN 201320100887 CN201320100887U CN203067641U CN 203067641 U CN203067641 U CN 203067641U CN 201320100887 CN201320100887 CN 201320100887 CN 201320100887 U CN201320100887 U CN 201320100887U CN 203067641 U CN203067641 U CN 203067641U
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Abstract
The utility model discloses a guide anti-leakage gas spring of double oil seals and three body stabilization centers. The guide anti-leakage gas spring comprises a cylinder, a piston rod, a piston and a sealing guide piece, wherein the piston rod passes through a first Y-shaped oil seal (7), an inner supporting ring (8), a second Y-shaped oil seal (10) and a guide piece (11), which are coaxially assembled with a sealing room, and then stretches out of a protective cover sleeved and fixed on one section of an external circle of the cylinder. An inner cavity movable sealed end of the sealing room of the cylinder is provided with an inner supporting ring which respectively and axially supports the Y-shaped oil seals through two end faces; and the Y-shaped oil seal which is close to a concave inner ring is supported on a plane at one end of the inner supporting ring and the other end provided with an annular flange is directly embedded into a V-shaped groove of the other Y-shaped oil seal, so that the Y-shaped oil seals are tightly fitted with the guide piece (11) to form a guide anti-leakage mechanism of the three body stabilization centers. According to the guide anti-leakage gas spring disclosed by the utility model, the gas spring is subjected to 20000 times of circulating service life tests according to national technical condition standards of a compressed gas spring; and the gas spring has no oil leakage and gas leakage, and a gas stroke force value of the spring has no attenuation change. After the tests, the total attenuation amount of a nominal force is less than 13% set by the national standards.
Description
Technical field
The utility model relates to a kind of machine-building that is widely used at present, vapour rubs, haulage device, furniture, medical treatment, the pressurized gas spring (hereinafter to be referred as air spring) of technical field such as fitness equipments, kitchen cabinet, more particularly, the utility model relates to a kind of at the most extensive free type air springs of sector application such as automobile, furniture, textile manufacturing machine, engineering machinery.
Technical background
Air spring is a kind of pressurized gas to be sealed in the cylinder barrel, produce the product of spring function by piston. do not need exterior power during this product work, lifting force is constant. and it is long to have a life-span, easy-regulating, advantage such as need not maintain, can play support, buffering, braking, highly regulate and the industrial accessory of function such as angle adjustment.It mainly is made up of cylinder barrel, piston rod, piston, sealing guiding element, gas mixture and joint etc.Air spring is to charge into inert gas or gas mixture in airtight cylinder barrel, make the pressure in the cavity be higher than atmospheric several times or tens times, thereby the pressure difference that the cross-section area that utilizes piston rod produces less than the cross-section area of piston realizes the motion of piston rod.There is part fluid to play hydraulic damping effect, one-way throttle valve communication rod chamber and rodless cavity in the cylinder barrel.The free state piston rod stretches out all the time, is extended configuration.Air spring has very significant advantage: speed is slow relatively, dynamic force changes little (generally in 1: 1.4).The free type air spring relies on that it is light, stable working, characteristics such as easy to operate, competitively priced, has waited until the wide application of sending out in industries such as field such as automobile, engineering machinery, printing machinery, Weaving device, aviation, medical apparatus, furniture, machine-building.The free type air spring is to have only the shortest, the longest two positions, and the strut device mainly plays a supportive role. pneumatic strut is power with the high-pressure inert gas, and support force is constant in whole working stroke, and has damping mechanism.
Usually the quality good or not of passing judgment on an air spring at first will be considered its sealing, if poor sealing the validity of phenomenons such as leakage of oil, gas leakage, influence power value can in use occur, especially be that the cylinder barrel external diameter is that 22 millimeters, nominal pressure are greater than the air spring of 650N, such as the air spring that needs 750N, pressure error is no more than 2N, because the power value of gas leakage, air spring may differ bigger with the 750N of actual demand; Change with its number of times calculating that can stretch fully, the power value of air spring in stroke the working life of air spring, and the gas bullet Huang under the perfect condition should the power value remain unchanged in whole stroke.But because factors such as design, processing and installation make that changing appears in the air spring power value in stroke inevitably.And the amplitude of its variation is to weigh a major criterion that the air spring quality is good and poor, and the amplitude of variation is more little, illustrates that the air spring quality is good, otherwise then poor.Owing to leakage of oil, leak gas, make that changing appears in the air spring power value in stroke inevitably.The nominal pressure attenuation of air spring is big, cause the power value constantly to descend, can not reach working life, so sealing is to weigh the major criterion of an air spring quality good or not, and the amplitude of variation is more little, and the air spring good airproof performance is described, otherwise then more poor.The cylinder barrel two ends of air spring all will seal, the cylinder barrel left end is static seal, generally can guarantee, but the cylinder barrel right-hand member be motive sealing, sealing difficulty, gas leakage, leakage of oil take place often,, to leak what be that key, its process of influencing the working life of air spring be exactly that air spring stress deformation sealing state variation finally causes leaking gas the process of leakage of oil, the employing of air spring in the market be that structure, its leakage of a Y type oil sealing occupies ratio and adopted many measure effects all not obvious greatly, for this reason.Especially nominal pressure is greater than 500N, working stroke is greater than the large percentage of 140 millimeters air spring gas leakage leakage of oil, and air spring is being installed, stressed and the initial winding degree that produces of improper air spring during use, owing to be subjected to the mounting point, the influence of factors such as service condition, air spring is stressed and initial winding degree that produce can not be eliminated, the piston rod of air spring inclined to one side lotus of stand under load in the process that stretches during air spring work, stressed and the initial winding degree that produces of air spring and carry an inclined to one side lotus and can make piston rod produce or bending deflection, its representation is oil sealing is squeezed into oval oil sealing by piston rod lip distortion, the lip distortion can not contact fully with piston rod, produce the gap and reduce sealability, the thing followed is exactly gas leak, the leakage of oil that causes leaking gas could reveal after air spring is installed and used significantly with the generation abnormal sound.Because end face and piston rod surface that the performance characteristic of air spring determines, the air spring long-term work is exposed in the space, be positioned at cylinder barrel guiding element are foremost being assembled impurity such as airborne dust, sand grains.During the reciprocal fore and aft motion of piston rod, the impurity such as dust, sand grains that stick to piston rod surface can cause wearing and tearing to the lip of oil sealing, produce when this wearing and tearing reach sealability that certain degree also can reduce oil sealing that oil, gas in the air spring cylinder leaks, befouling environment and with it around object.
Summary of the invention
The purpose of this utility model is the deficiency that exists at above-mentioned air spring hermetic unit prior art, provide a kind of sealing tight, stroke force value decay is little, long service life, and can eliminate leakage of oil, gas leakage, eliminate the fluid leakage pollution that produces in the piston rod to-and-fro motion, strengthen stability and the effective steady centre pilot leakage proof of dual-oil seal trisome air spring that improves piston rod anti-bias load lotus ability of piston rod movement.
The technological scheme that its technical problem that solves the utility model adopts is: the steady centre pilot leakage proof of a kind of dual-oil seal trisome air spring, comprise, cylinder barrel, piston rod, piston and sealing guiding element, piston rod is by the Y type oil sealing 7 of closed chamber with coaxial assembling, internal support ring 8, the 2nd Y type oil sealing 10 and guiding element 11, stretching out suit is fixed on outside the guard shield on one section cylindrical of cylinder barrel, it is characterized in that: at cylinder barrel closed chamber inner chamber motive sealing end, be provided with one by the internal support ring of both ends of the surface difference axially support Y type oil sealing, one Transverse plane of this internal support ring supports a Y type oil sealing that encircles in pressing close to sink, the other end that is shaped on annular flange flange directly is embedded in the V-shaped groove of another Y type oil sealing, make this Y type oil sealing be close to guiding element 11, the annular convex of outer support ring 13 1 ends of dress is directly inserted in the V-shaped groove of the 3rd Y type oil sealing 14 in the guard shield 15, thereby the formation trisome seals steady centre pilot leakage proof mechanism.
Circumference at described supporting ring is distributed with at least three radial direction through hole.
The utility model has following beneficial effect than prior art:
The utility model adopts two composite structure modes that play the Y type oil sealing of double-layer seal effect and be provided with a rigid support ring between two Y type oil sealings in the closed chamber of cylinder barrel motive sealing end, use the axial plane of supporting ring directly to embed in the V-shaped groove of another Y type oil sealing with the other end annular flange flange that is supporting a Y type oil sealing, supporting ring.In order to make working pressure be added on the interior outer lip limit of oil sealing simultaneously, the lip limit is opened, open four radial direction through hole at supporting ring.The isolation of the supporting ring between two Y type oil sealings and the rigidity of supporting ring, avoided oil sealing to be subjected to pressure mutual extrusion distortion, the key of cylinder inner high voltage gas to be since the other end annular flange flange of support ring directly embedded in the V-shaped groove of a Y type oil sealing, make in outer lip limit spreading, be close to inwall and the piston rod of outstanding air spring cylinder barrel all the time, do not have because of air spring with this Y type oil sealing and install and the stressed initial winding degree that produces and partial load cause piston rod generation bending to be squeezed into the drawback that ellipse makes gas leak by piston rod.This dual-oil seal supporting ring three body mechanisms have not only improved the tight sealability of air spring, have eliminated phenomenons such as leakage of oil, gas leakage, and the power value that has also reduced the decay of air spring stroke force value simultaneously changes, and has prolonged the working life of air spring.
The utility model is in the dustproof leakage proof guard shield mechanism of guiding of the most preceding section apparatus of air spring, the dustproof big end endoporus of leakage proof guard shield of ladder cylinder barrel shaped guiding and cylinder barrel cylindrical interference suit are fastened on the leading portion of cylinder barrel, aperture by piston rod and guard shield front end boss is slidingly matched and the coaxial and rigid support ring in step hole three holes between between rearmounted step hole and preposition center hole, the less magnitude of interference of outside framework oil seal cooperates, both guarantee the coaxality of piston rod and cylinder barrel, increased the guiding length of piston rod again, simultaneously because the good rigidly of guard shield, the aperture of piston rod and guard shield front end boss is slidingly matched, improve the stability of piston rod movement effectively and strengthened the ability of the anti-bias load lotus of piston rod, the oil sealing of further having avoided dual-oil seal supporting ring three body mechanisms can not installed the initial rich degree that produces and be subjected to partial load to cause piston rod to produce and crookedly is squeezed into oval trend by pneumatic piston rod because of air spring.Prevented that effectively air spring guiding element and oil sealing are worn and torn by dust, sand grains, it is long because of pneumatic piston rod to have overcome air spring, the bending that produces when stressed causes the unstable and leaked liquid of motion and produces the drawback of pollution, wherein embed the rigid support ring in the outside framework oil seal V-shaped groove, the interior outer lip of outside framework oil seal port is opened, all the time inwall and the pneumatic piston rod of being close to guard shield, the greasy dirt that pneumatic piston rod is produced in to-and-fro motion is further struck off sealing, can not pollute environment and article.Also reduced simultaneously the decay of air spring stroke force value the power value change, prolonged the working life of air spring.Make the air spring up-to-standard rate bring up to 98.8% from 90% of original structure.
The utility model air spring by Chengdu Product Quality Supervision and Inspection Institute of well-known emphasis inspection body of country carry out life test, according to national pressurized gas spring technical specifications standard to 20000 cycling life tests of air spring, air spring does not have leakage of oil, gas leakage, and spring gas stroke force is worth undamped variation.The overall attenuation of test back nominal pressure is less than 13% NBS.
Description of drawings
Fig. 1 is the generalized section of the steady centre pilot leakage proof of the utility model dual-oil seal trisome air spring.
Fig. 2 is that the I of Fig. 1 is to the part section enlarged diagram.
Among the figure: 1 pipe end joint, 2 cylinder barrels, 3 air chambers, 4 pistons, the 5O RunddichtringO, 6 packing rings, 7 oil sealings, 8 internal support rings, 9 radial direction through hole, 10 oil sealings, 11 guiding elements, 12 piston rods, 13 external support rings, 14 outside framework oil seals, 15 guard shields, 16 rod end joints, 17 fluid storage chamber, 18 closed chambers, 19 sagging interior rings, 20 pressurized gas.
Embodiment
In the embodiment that Fig. 1, Fig. 2 describe, the steady centre pilot leakage proof of the dual-oil seal trisome air spring that adopts two independent sealed mechanisms to form comprises the guiding element of cylinder barrel, piston rod, piston and sealing.Cylinder barrel 2 has the piston rod 12 that pressurized gas 20 gas mixtures is sealed in the air chamber 3 in the cylinder barrel 2 and produces spring functions by piston 4.Piston rod 12 is by a Y type oil sealing 7, internal support ring 8, two Y type oil sealing 10 and the guiding element 11 of closed chamber 18 with coaxial assembling, stretches out suit and is fixed on outside the guard shield 15 on one section cylindrical of cylinder barrel.There is link at the general two of air spring, and the pattern of link, specification are a lot, generally all are that screw, Si Ya or nut connect, or the pipe end joint 1 shown in the figure and rod end joint 16.Can in cylinder barrel 2, be shaped on annular groove by the cylinder face of reciprocating piston 4, O RunddichtringO 5 is housed in the groove, packing ring 6 is housed on the end face.The sealing guiding element 11 of a Y type oil sealing 7, internal support ring 8, two Y type oil sealing 10 and the port position of piston rod 12 by being contained in closed chamber 18 of piston 4 of linking to each other is sealed in the cylinder body of cylinder barrel 2.Air spring Sealing oil sealing is Y type oil sealing again, mainly is made up of skeleton and seal, and framework material is the steel packing ring, and seal is rubber.Be shaped on ring-type V-type groove at a Y type oil sealing 7, the 2nd Y type oil sealing 10 end faces.Be shaped on outer rim lip B, outer lip on the oil sealing outer cylinder and play the effect of static seal, be shaped on inner lip A on the oil sealing endoporus inner edge, inner lip plays the effect of reciprocation sealing.Integral body plays the effect of sealing gas and hydraulic oil.Be shaped at the motive sealing end of described cylinder barrel 2 and determine piston 4 and piston rod 12 motion working strokes vertically and cylinder barrel 2 is divided in the sinking of air chamber 3 and closed chamber 18 and encircles 19.Closed chamber 18 is located at the top of piston 4, and between the end of a Y type oil sealing 7, the 2nd Y type oil sealing 10 and internal support ring 8 assemblies.The position, space still is filled with gas mixture in sinking in closed chamber 18 spaces of ring 19 formation, between internal support ring 8 and the 2nd Y type oil sealing 10.
Be equipped with guard shield 15 at air spring leading portion cylindrical shell, the rearmounted step hole suit of guard shield 15 is fixed on one section cylindrical of cylinder barrel.Piston rod 12 passes sheath 15 preposition center holes and stretches out by external support ring 13 and the 3rd Y type oil sealings 14 of dress in the guard shield 15, is with guard shield 15 preposition center holes that state is reciprocating movingly.Trisome seals steady centre pilot leakage proof mechanism and is arranged on air spring cylinder barrel leading portion and guard shield 15 sleeves overlap joint section.Be positioned at the rigidity internal support ring of cylinder barrel closed chamber motive sealing end inner chamber, its both ends of the surface are a Y type of axially support oil sealing respectively, and two Y type oil sealings lay respectively at above-mentioned internal support ring two ends.One end axial plane of internal support ring supports a Y type oil sealing that encircles in pressing close to sink, the other end that is shaped on annular flange flange directly embeds in the V-shaped groove of another Y type oil sealing, make this Y type oil sealing be close to guiding element 11, thereby the trisome that constitutes seal steady centre pilot leakage proof mechanism.The one Y type oil sealing 7 is the first layer sealing, and the 2nd Y type oil sealing 10 is second layer sealing.Internal support ring 8 is positioned between a Y type oil sealing 7, the two Y type oil sealings 10.One of supporting ring 8 supports a Y type oil sealing 7, makes a Y type oil sealing 7 not by the extrusion-deformation of pressurized gas gas mixture than large end face.Trisome seals steady centre pilot leakage proof mechanism and is made of a Y type oil sealing 7, internal support ring 8 and the 2nd Y type oil sealing 10 of being close to guiding element 11.
Circumference at supporting ring is distributed with at least three radial direction through hole, also can open four radial direction through hole at supporting ring 8 circumference, so that the space between supporting ring 8 and the 2nd Y type oil sealing 10, all the time be full of the high-pressure oil gas mixture, working pressure is added on the interior outer lip of the 2nd Y type oil sealing 10 simultaneously, the lip limit is opened.Present embodiment internal support ring 8 is that a cutting plane is the rigid cylindrical cylindrical shell of π word cross section step, and four radial direction through hole are distributed on the intermediate portion of cylindrical tube, run through cylindrical shell.Supporting ring 8 can be metallic article, also can be the nonmetal product with certain rigidity, intensity, such as the glass fibre reinforced nylon supporting ring.The another side annular flange flange of inside support ring 8 directly embedded in the V-shaped groove of the 2nd Y type oil sealing 10, make outer lip limit spreading in it be close to the inwall of outstanding air spring cylinder barrel and piston rod, such Y type oil sealing 7, the 2nd Y type oil sealing 10 all the time installs and the stressed initial winding degree that produces and partial load cause piston rod to produce bending with regard to not having because of air spring, by piston rod be squeezed into ellipse make gas leak cause gas leakage leakage of oil drawback, remain the excellent sealing state, play the effect of double seal.
At the leading portion of air spring cylinder barrel 2, installed one and be assemblied in the guard shield 15 on the cylinder barrel 2 and be assemblied in external support ring 13 in the endoporus of guard shield 15, guiding that the 3rd Y type oil sealing 14 the is formed leakage proof guard shield mechanism of preventing dust by coaxial.The 3rd Y type oil sealing 14 is the rubbery sealed bodies by supporting ring 13 rigid support, all is shaped on the V-ring groove on the end face of shape and a Y type oil sealing 7, the 3rd Y type oil sealing 14 that the 2nd Y type oil sealing 10 is identical, and the steel packing ring by rubber seal is arranged at the bottom, other end.Be shaped on the outer rim lip B of static seal effect on the 3rd Y type oil sealing 14 outer cylinders, be shaped on the inner lip A of reciprocation sealing effect on the inner hole wall.The front-end face of outer support ring 13 is shaped on the collar flange of direct embedding the 3rd Y type oil sealing 14V shape groove, and ear end face is close to cylinder barrel 2 front-end faces.Stretch out the piston rod 12 of air spring by external support ring 13, the 3rd Y type oil sealing 14 and guard shield 15.Supporting ring 13 annular flange flange of rigidity are embedded in the end face V-ring groove of the 3rd Y type oil sealing 14, guard shield 15 suits are fastened on the leading portion of cylinder barrel.The rearmounted step hole interference fit of guard shield 15 is fastened on one section cylindrical of cylinder barrel, piston rod 12 slidably outer support ring 13 and the 3rd Y type oil sealings 14 by dress in the sheath 15, stretch out from guard shield 15 preposition center holes.Be sealed in the sheath 15 with supporting ring 13, the 3rd Y type oil sealing 14 in addition, form a tight sealing mechanism.Piston rod 12 is state movingly with guard shield 15 preposition center holes, played the rigid support effect in the V-shaped groove of the direct insertion of the annular convex of rigid support ring 13 1 ends of dress the 3rd Y type oil sealing 14 in the guard shield 15, make outer lips in the 3rd Y type oil sealing 14 all the time spreading and pneumatic piston rod 12 and guard shield 15 inwalls be close to the fluid of adhesion on the effective scraped clean piston rod 12, prevented that air spring fluid seepage is to its pollution of object on every side.External support ring 13 cylindrical bodys are that a cutting plane is step π word cross section, in the intermediate portion of cylinder, be shaped on that the uniform radial direction through hole of radial equipartition and four circular holes that run through, circular cylinder and the 3rd Y type oil sealing 14, guard shield 15 constitute the independent fluid storage chamber 17 that can effectively store fluid.
Radial direction through hole on the circular section of present embodiment external support ring 13 can be four and be the equally distributed through hole of 90 degree.Guard shield 15 can be three sections cylindrical drum bodies that diameter is different, and inner diameter hole can be the ladder intercommunicating pore of three different-diameters.Piston rod 12 is slidingly matched by guard shield 15 front end boss circular holes, step hole three holes between between rearmounted step hole and preposition center hole coaxial with rigid support ring 13, the 3rd Y type oil sealing 14 interference fit.
Claims (10)
1. the steady centre pilot leakage proof of dual-oil seal trisome air spring, comprise, cylinder barrel, piston rod, piston and sealing guiding element, piston rod is by the Y type oil sealing (7) of closed chamber with coaxial assembling, internal support ring (8), the 2nd Y type oil sealing (10) and guiding element (11), stretching out suit is fixed on outside the guard shield on one section cylindrical of cylinder barrel, it is characterized in that: at cylinder barrel closed chamber inner chamber motive sealing end, be provided with one by the internal support ring of both ends of the surface difference axially support Y type oil sealing, one Transverse plane of this internal support ring supports a Y type oil sealing that encircles in pressing close to sink, the other end that is shaped on annular flange flange directly is embedded in the V-shaped groove of another Y type oil sealing, make this Y type oil sealing be close to guiding element (11), the annular convex of outer support ring (13) one ends of dress is directly inserted in the V-shaped groove of the 3rd Y type oil sealing (14) in the guard shield (15), thereby the formation trisome seals steady centre pilot leakage proof mechanism.
2. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring is characterized in that, is distributed with at least three radial direction through hole at the circumference of described supporting ring.
3. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that, piston rod (12) is by a Y type oil sealing (7), internal support ring (8), the 2nd Y type oil sealing (10) and the guiding element (11) of closed chamber (18) and coaxial assembling, stretches out suit and is fixed on outside the guard shield (15) on one section cylindrical of cylinder barrel.
4. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that the sealing guiding element (11) of a Y type oil sealing (7), internal support ring (8), two Y type oil sealing (10) and the port position of the piston rod (12) of the piston (4) that links to each other by being contained in closed chamber (18) is sealed in the cylinder body of cylinder barrel (2).
5. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that, be shaped at the motive sealing end of described cylinder barrel (2) and determine piston 4 and piston rod 12 motion working strokes vertically and cylinder barrel (2) is divided in the sinking of air chamber (3) and closed chamber (18) and encircles (19).
6. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that, closed chamber (18) is located at the top of piston (4), and between the end of a Y type oil sealing (7), the 2nd Y type oil sealing (10) and internal support ring (8) assembly.
7. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that, the one Y type oil sealing (7) is the first layer sealing, and the 2nd Y type oil sealing (10) is second layer sealing, and internal support ring (8) is positioned between a Y type oil sealing (7) and the 2nd Y type oil sealing (10).
8. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that, internal support ring (8) is that a cutting plane is the rigid cylindrical cylindrical shell of π word cross section step, and four radial direction through hole are distributed on the intermediate portion of cylindrical tube, run through cylindrical shell.
9. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that, all be shaped on the V-ring groove on one end face of shape and a Y type oil sealing (7), the 3rd Y type oil sealing (14) that the 2nd Y type oil sealing (10) is identical, steel packing ring by rubber seal is arranged at the bottom, other end, and all be shaped on the outer rim lip B of static seal effect on their outer cylinder, be shaped on the inner lip A of reciprocation sealing effect on the inner hole wall.
10. the steady centre pilot leakage proof of dual-oil seal trisome as claimed in claim 1 air spring, it is characterized in that, at air spring cylinder barrel (2) leading portion, installed one and be assemblied in the guard shield (15) on the cylinder barrel (2) and be assemblied in the external support ring (13) in the endoporus of guard shield (15), the dustproof leakage proof guard shield mechanism of guiding that the 3rd Y type oil sealing (14) forms by coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100887 CN203067641U (en) | 2013-02-21 | 2013-02-21 | Guide anti-leakage gas spring of double oil seals and three body stabilization centers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100887 CN203067641U (en) | 2013-02-21 | 2013-02-21 | Guide anti-leakage gas spring of double oil seals and three body stabilization centers |
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| Publication Number | Publication Date |
|---|---|
| CN203067641U true CN203067641U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320100887 Expired - Fee Related CN203067641U (en) | 2013-02-21 | 2013-02-21 | Guide anti-leakage gas spring of double oil seals and three body stabilization centers |
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| CN (1) | CN203067641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675900A (en) * | 2015-03-19 | 2015-06-03 | 柳州市永益机械制造有限公司 | Gas spring with dustproof device |
-
2013
- 2013-02-21 CN CN 201320100887 patent/CN203067641U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675900A (en) * | 2015-03-19 | 2015-06-03 | 柳州市永益机械制造有限公司 | Gas spring with dustproof device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YANG BIN Free format text: FORMER OWNER: YANG SHIMING Effective date: 20150507 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150507 Address after: 611930, No. 4, building 1, building 37, Fumin lane, Tian Zhen Town, Sichuan, Pengzhou, 8 Patentee after: Yang Bin Address before: 611930 No. 37 Fumin lane, Tian Zhen Town, Sichuan, Pengzhou Patentee before: Yang Shiming |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20170221 |