CN1482035A - Automobile reversing auto-comeandgo vibration damping cross tie device - Google Patents
Automobile reversing auto-comeandgo vibration damping cross tie device Download PDFInfo
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- CN1482035A CN1482035A CNA031416616A CN03141661A CN1482035A CN 1482035 A CN1482035 A CN 1482035A CN A031416616 A CNA031416616 A CN A031416616A CN 03141661 A CN03141661 A CN 03141661A CN 1482035 A CN1482035 A CN 1482035A
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- 238000013016 damping Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000010720 hydraulic oil Substances 0.000 description 19
- 230000010355 oscillation Effects 0.000 description 13
- 239000003921 oil Substances 0.000 description 12
- 230000035939 shock Effects 0.000 description 5
- 230000003042 antagnostic effect Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 2
- 206010044456 Transverse presentation Diseases 0.000 description 1
- 241000826860 Trapezium Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The present invention discloses one kind of automatic telescopic damping horizontal pull rod device for automobile to steer. The device includes right and left connecting rods and hydraulic telescopic unit, the right and left connecting rods are connected to the horizontal pull rod, and one piston rod with ring flange connected to the other end of the right connecting rod separates the cavity of the hydraulic telescopic unit into two, right and left, hydraulic rooms with joint connected to oil pipe and solenoid valve separately. Or, the piston rod separates the cavity of the cavity of the hydraulic telescopic unit into three, hydraulic rooms, including the right and the left ones connected to oil pipe and the middle one with compensation hole communicated with liquid cylinder. The present invention utilizes hydraulic damping to reduce the transmission of angular vibration of front wheels, raise the stability of vehicle and reduce wear.
Description
Technical field
The present invention relates to the foresteerage gear of automobile and wheel-tire tractor, especially refer to the intermediate rod device of the trapezoidal transmission device of a kind of Vehicular turn.
Background technology
The foresteerage gear of existing automobile and wheel-tire tractor mainly adopts the steering trapezium transmission device, there is not sideslip during for the assurance Vehicular turn, reduce resistance and wearing and tearing, requiring front-wheel and trailing wheel in theory is center and by the motion of circular arc tangential line direction around a point all, and its function formula shows as:
ctgα-ctgβ＝M/L
α is outer wheel flutter angle of inclination, and β is interior wheel flutter angle of inclination, and M is a front wheel tread, and L is the front and back wheel wheelbase
For reducing the sideslip phenomenon, numerous vehicle research staff have designed multiple anti-sideslip device in succession, the generation of breakking away when turning in the hope of elimination, its principle of design shows as by this device, each angle of inclination when the near front wheel is turned to, produce a certain intermediate rod length value accordingly, it is the variation of the near front wheel angle of inclination, intermediate rod length also changes thereupon, and have an one-to-one relationship, thereby the angle of inclination of control off front wheel are also pressed the Ackermam formula with the near front wheel and are changed, and make the angle of inclination of two front-wheels satisfy no sideslip requirement.Representative type as on January 8th, 2003 disclosed notification number be CN2529808Y, name is called " transmission device for automatically correcting steering " utility model patent, its correct equipment by comprising that correcting cam, roller assembly, preceding and back director are down formed guarantees overlapping of actual steering line and the no sideslip and steering line of theory.This product mainly guarantees that by the profile equation of correcting cam two front-wheel deflection angles change, satisfy no sideslip requirement, promptly for a certain angle of inclination, connection by the correcting cam profile, make intermediate rod produce a fixing length value, and this length value can make two angle of inclination satisfy the requirement of Ackermam formula.But because influences such as cam working accuracy, mechanism's setting accuracies, aforementioned anti-sideslip device can only guarantee that the relation of both sides wheel angle of inclination approaches above-mentioned Ackermam formula substantially, approx, still has the image of breakking away during actual steering, can't eradicate.In addition, because being connected between left and right sides front-wheel and the intermediate rod is to adopt the ball-type articulated joint, certainly existed certain clearance, and this gap produces along with worn-down and increases, and causes off front wheel that level of freedom is arranged.When vehicle was kept straight at a high speed or turned to, this off front wheel was easy to produce wiggly angular oscillation like this, to the cruising generation potential safety hazard of vehicle, had also aggravated Tyte Wear simultaneously.During the off front wheel angular oscillation, pass to the near front wheel by intermediate rod again, make the near front wheel also produce angular oscillation; The angular oscillation of same the near front wheel also passes to off front wheel by intermediate rod, has a strong impact on safety traffic.People expect to design and a kind ofly both can guarantee that front-wheel had level of freedom for this reason, can produce shock damping action to the angular oscillation of left and right sides front-wheel again, angular oscillation are reduced greatly and the flexible automatically intermediate rod device of adjusting of length.
Summary of the invention
The technical problem to be solved in the present invention is when overcoming vehicle ', the angular oscillation of left and right sides front-wheel easily transmits mutually by the intermediate rod of trapezoidal transmission device, make the vehicle yaw form the defective and the deficiency of potential safety hazard and aggravation wear on tyres, provide a kind of transmission that utilizes the hydraulic damping principle to reduce left and right sides front-wheel angular oscillation to society, and the intermediate rod device is used in turning to of length automatically retractable adjustment, guarantee the pure rolling of vehicle front-wheel, reduce wear on tyres.
The technical solution adopted for the present invention to solve the technical problems is: Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device comprises left and right sides pipe link and hydraulic telescopic device, pipe link one end in the left and right sides is connected to intermediate rod, the other end of right pipe link is established the piston rod of tool annular lip, two hydraulic pressure chambers about the hydraulic telescopic device inner chamber is divided into; Left and right sides hydraulic pressure chamber is respectively equipped with joint, is connected with oil pipe and electromagnetic valve.
Described hydraulic telescopic device housing is connected in the other end of left pipe link, with its synchronous sway.
Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device comprises left and right sides pipe link and hydraulic telescopic device, pipe link one end in the left and right sides is connected to intermediate rod, the other end of left and right sides pipe link is established the piston rod of tool annular lip, and the hydraulic telescopic device inner chamber is divided into three hydraulic pressure chambers in left, center, right; Left and right sides hydraulic pressure chamber is connected with oil pipe, and middle hydraulic chamber is provided with compensation orifice and communicates with liquid container.
Described hydraulic telescopic device is fixed on the vehicle propons, and the two ends that left and right sides pipe link stretches into hydraulic telescopic device are connected with linkage; Described left pipe link is captiveed joint with linkage, and right pipe link and linkage flexibly connect; The adapter sleeve of described linkage has the long waist shaped groove in the axial unlatching of right half perisporium.
Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device of the present invention, utilize the hydraulic damping principle to reduce the transmission of left and right sides front-wheel angular oscillation, and make intermediate rod length can obtain the device of adjusting automatically, and realize the front-wheel pure rolling and reduce Tyte Wear, eliminate the potential safety hazard of vehicle yaw.Use and calculate according to applicant actual, the tie rod arm of general 200 millimeter length, intermediate rod length changes 3.5 millimeters, just can make about off front wheel deflection 1 degree, and off front wheel deflection 1 degree, the corresponding sideslip just can change about 17.5m/Km, is 7mm as the left and right sides stroke of piston, just can make ± 35m/Km eliminates automatically with interior sideslip, and anti-sideslip effect is quite desirable.This product structure is simple, applicability is wide, both can be widely used in the new car production of car manufacturer, also can be used for the transformation to the existing vehicle that dispatches from the factory, and the stability when improving vehicle ', reduces wear and resistance has positive effect.
Description of drawings
Fig. 1 is a vehicle front-wheel stub mounting structure scheme drawing.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is another embodiment of the present invention structural representation.
The specific embodiment
As shown in Figure 2, the present invention includes left and right sides pipe link 1,11 and hydraulic telescopic device 5, pipe link one end 12,13 in the left and right sides is connected to intermediate rod, and the other end of right pipe link 11 is established the piston rod of tool annular lip 6, two hydraulic pressure chamber A, B about hydraulic telescopic device 5 inner chambers are divided into; Left and right sides hydraulic pressure chamber A, B are respectively equipped with joint 4,7, and joint 4,7 all adopts the Small Holes conducting so that hydraulic oil flow through the time produce shock damping action.Joint 4,7 connects an oil pipe respectively, and by the mutual conducting between a solenoid control left and right sides hydraulic pressure chamber A, the B or close.For preventing that hydraulic oil from oozing out from the axial dynamic seal face of right pipe link 11, seal ring 2,9 is respectively established in the inner chamber both sides of hydraulic telescopic device 5.
As shown in Figure 3, the present invention also can comprise left and right sides pipe link 1,11 and hydraulic telescopic device 5, pipe link one end 12,13 in the left and right sides is connected to intermediate rod, the other end of right pipe link 11 is established the piston rod of tool annular lip 6, annular lip 6 is provided with aperture 22, the other end of left side pipe link 1 is established the piston rod of tool annular lip 3, and hydraulic telescopic device 5 inner chambers are divided into left, center, right three hydraulic pressure chamber A, B, C; Left and right sides hydraulic pressure chamber A, B are connected with oil pipe 8, and middle hydraulic chamber C is provided with compensation orifice 17 and communicates with liquid container.Hydraulic telescopic device 5 is fixed on the vehicle propons, the two ends that left and right sides pipe link 1,11 stretches into hydraulic telescopic device 5 are connected with linkage 18, left side pipe link 1 is captiveed joint with linkage 18 by screw 19, the axial unlatching of linkage 18 right half perisporiums has long waist shaped groove 20, the screw 21 of being located at right pipe link 11 left end heads can be moved along long waist shaped groove 20 wall shifts, realize flexible connection with linkage 18.
As shown in Figure 1, front-wheel 15 main pin axis more than 14 of common vehicle are hypsokinesis, and the front-wheel both sides do not have sideslip thrust during straight-line travelling.When turning to generation sideslip thrust, road surface 16 can produce antagonistic force F to front-wheel with the contact point of front-wheel 15, and this antagonistic force F and main pin axis 14 have left distance X, make wheel return positive moment FX thereby produce.Regardless of moving ahead or turning to, road surface 16 is positioned at main pin axis 14 back all the time with the contact point of front-wheel 15, can produce aligning torque FX.But when vehicle backing, because the contact point of road surface 16 and front-wheel 15 is positioned at main pin axis 14 fronts, can strengthen the deflection of front-wheel on the contrary, transfer toward gesture after making wheel be 180 degree, so the transverse presentation bar must lock and can not the tool retractility during reversing.
In conjunction with Fig. 2, the principle of work of first kind of embodiment of summary the present invention.Vehicle moves ahead or when turning to, hydraulic oil is conducted through joint 4 and joint 7 in left hydraulic chamber A and the right hydraulic chamber B, annular lip 6 can be along shell 5 inner chamber axis sway, the interior hydraulic oil of left hydraulic chamber A and right hydraulic chamber B is flowed mutually, but because the shock damping action that hydraulic oil flow produces when joint 4 and joint 7 through holes, can slow down the sway speed of annular lip 6, thereby the expanding-contracting action between left pipe link 1 and the right pipe link 11 is slowed down, play damping of vibrations, effectively reduced the swing of headstock.Angle of inclination mal when arbitrary front-wheel, produce when breakking away, road surface 16 can produce aligning torque FX simultaneously to front-wheel with the contact point of front-wheel 15, this antagonistic force F also acts on intermediate rod, it is stretched or by compression, and pass to right pipe link 11, produce displacement with respect to left pipe link 1, hydraulic oil flow is to another hydraulic pressure chamber in the one side hydraulic pressure chamber of pressurized, distance between right pipe link 11 right-hand member threaded connections 12 and the left pipe link 1 left end threaded connection 13 is changed, realize the flexible adjustment of whole intermediate rod length.After length adjustment to the angle of inclination that make two front-wheels of intermediate rod satisfied the Ackermam formula, antagonistic force F disappeared, left hydraulic chamber A and right hydraulic chamber B equilibrium of pressure.During vehicle backing, make oil circuit disconnection between left hydraulic chamber A and the right hydraulic chamber B by electromagnetic valve.Described electromagnetic valve can be connected with back-up lamp switch, to realize synchronous operation.After oil circuit disconnects between left hydraulic chamber A and the right hydraulic chamber B, annular lip 6 can not be again along shell 5 inner chamber axis sway, the fixed distance between the threaded connection 12 and 13, the not flexible of whole intermediate rod, be the rigid body characteristic, thus the correct angle of inclination of two front-wheels when guaranteeing reversing.
In conjunction with Fig. 3, the principle of work of second kind of embodiment of summary the present invention.When vehicle turned left, left pipe link 1 moved right, left hydraulic chamber A pressure decay, and middle hydraulic chamber C pressure rises, and promotes right pipe link 11 and moves to right, and right hydraulic chamber B oil pressure rises, and hydraulic oil flows to left hydraulic chamber A through oil pipe 8.If this moment, vehicle was a halted state, then off front wheel does not have aligning torque FX, and the stroke of right pipe link 11 is because the hydraulic oil of middle hydraulic chamber C is back to liquid container and less than the stroke of left pipe link 1 through compensation orifice 17.If vehicle turns left when advancing, the aligning torque FX of off front wheel makes it go to no sideslip position, be that the right side intermediate rod drives right pipe link 11 to suitable position, the stroke of right pipe link 11 is less than the stroke of left pipe link 1 at this moment, the hydraulic oil of middle hydraulic chamber C through the aperture 22 of annular lip 6 to right hydraulic chamber B, flow to left hydraulic chamber A through oil pipe 8 again, up to the equilibrium of pressure of middle hydraulic chamber C and right hydraulic chamber B, right pipe link 11 does not stress.If the stroke of right pipe link 11 is greater than the stroke of left pipe link 1 at this moment, the hydraulic oil among the right hydraulic chamber B flow to middle hydraulic chamber C through the aperture 22 of annular lip 6, and up to the equilibrium of pressure of middle hydraulic chamber C and right hydraulic chamber B, right pipe link 11 does not stress.
When vehicle was turned right, left intermediate rod drove left pipe link 1 and is moved to the left, middle hydraulic chamber C pressure decay, and left hydraulic chamber A pressure rises, and hydraulic oil flows to right hydraulic chamber B through oil pipe 8, and the right pipe link 11 of the hydraulic drive of right hydraulic chamber B moves to left.If this moment, vehicle was a halted state, then off front wheel does not have aligning torque FX, the stroke of right pipe link 11 since the hydraulic oil flow of right hydraulic chamber B to middle hydraulic chamber C and less than the stroke of left pipe link 1.If vehicle is turned right when advancing, the aligning torque FX of off front wheel makes it go to no sideslip position, be that the right side intermediate rod drives right pipe link 11 to suitable position, the stroke of right pipe link 11 is less than the stroke of left pipe link 1 at this moment, hydraulic oil flows to right hydraulic chamber B through left hydraulic chamber A, oil pipe 8, to middle hydraulic chamber C, reach balance up to middle hydraulic chamber C and right hydraulic chamber B hydraulic pressure through aperture 22, right pipe link 11 does not stress.If the stroke of right pipe link 11 is greater than the stroke of left pipe link 1 at this moment, the hydraulic oil of middle hydraulic chamber C flow among the right hydraulic chamber B through aperture 22, and up to the equilibrium of pressure of middle hydraulic chamber C and right hydraulic chamber B, right pipe link 11 does not stress.
During vehicle ', off front wheel produces angular oscillation if meet external force by chance, can make right pipe link 11 sway by right intermediate rod, and the hydraulic oil among middle hydraulic chamber C and the right hydraulic chamber B is through aperture 22 and stream comes diffluence, hydraulic oil flow is subjected to shock damping action through aperture 22, thereby angular oscillation is slowed down.If external force makes the near front wheel produce angular oscillation, left side intermediate rod makes left pipe link 1 sway, hydraulic oil among the left hydraulic chamber A is through oil pipe 8, right hydraulic chamber B and aperture 22, arrive middle hydraulic chamber C, form hydraulic oil stream between left hydraulic chamber A and middle hydraulic chamber C and come diffluence, be subjected to shock damping action, thereby angular oscillation is slowed down.
During reversing, close compensation orifice 17, the hydraulic oil total volume of left hydraulic chamber A, middle hydraulic chamber C and right hydraulic chamber B is constant, and the stroke of left pipe link 1 and right pipe link 11 equates, guarantees the corner of left and right sides front-wheel.In addition, make to lose control of one's vehicle for the degree of freedom that prevents off front wheel is excessive, the two ends that left and right sides pipe link 1,11 stretches into hydraulic telescopic device 5 are connected with linkage 18, the axial unlatching of linkage 18 right half perisporiums has long waist shaped groove 20, and the screw 21 of being located at right pipe link 11 left end heads can be moved along long waist shaped groove 20 wall shifts, realizes the flexible connection with linkage 18, the length of this long waist shaped groove 20, be exactly the degree of freedom of off front wheel, surpass the back be rigidly connected, no longer exist flexible.
As shown in Figure 2, Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device of the present invention can be installed between front-wheel ball-type articulated mounting and the intermediate rod after former vehicle intermediate rod excision and the isometric size of this product.As shown in Figure 3, be that this device is fixed on the vehicle propons, left and right sides pipe link is connected with left and right sides steering trapezoidal arm with short intermediate rod respectively, and the groundwork of its flexible adjustment intermediate rod is identical, belongs to claim protection domain of the present invention equally.
Claims (8)
1, a kind of Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device, comprise left and right sides pipe link and hydraulic telescopic device, pipe link one end in the left and right sides is connected to intermediate rod, and the other end of right pipe link is established the piston rod of tool annular lip, two hydraulic pressure chambers about the hydraulic telescopic device inner chamber is divided into; Left and right sides hydraulic pressure chamber is respectively equipped with joint, is connected with oil pipe and electromagnetic valve.
2, a kind of Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device, comprise left and right sides pipe link and hydraulic telescopic device, pipe link one end in the left and right sides is connected to intermediate rod, the other end of left and right sides pipe link is established the piston rod of tool annular lip, and the hydraulic telescopic device inner chamber is divided into three hydraulic pressure chambers in left, center, right; Left and right sides hydraulic pressure chamber is connected with oil pipe, and middle hydraulic chamber is provided with compensation orifice and communicates with liquid container.
3, Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device as claimed in claim 1, described hydraulic telescopic device housing is connected in the other end of left pipe link, with its synchronous sway.
4, Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device as claimed in claim 2, described hydraulic telescopic device are fixed on the vehicle propons, and the two ends that left and right sides pipe link stretches into hydraulic telescopic device are connected with linkage.
5, Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device as claimed in claim 1 or 2, seal ring is respectively established in the inner chamber both sides of described hydraulic telescopic device.
6, as claim 1 or 3 described Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Devices, described joint is the Small Holes conducting.
7, Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device as claimed in claim 4, described left pipe link is captiveed joint with linkage, and right pipe link and linkage flexibly connect.
8, Car Turning And Damping Telescopically Automatical Horizontal Pull-rod Device as claimed in claim 7, the adapter sleeve of described linkage has the long waist shaped groove in the axial unlatching of right half perisporium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141661 CN1234562C (en) | 2003-07-14 | 2003-07-14 | Automobile reversing auto-comeandgo vibration damping cross tie device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141661 CN1234562C (en) | 2003-07-14 | 2003-07-14 | Automobile reversing auto-comeandgo vibration damping cross tie device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482035A true CN1482035A (en) | 2004-03-17 |
| CN1234562C CN1234562C (en) | 2006-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03141661 Expired - Fee Related CN1234562C (en) | 2003-07-14 | 2003-07-14 | Automobile reversing auto-comeandgo vibration damping cross tie device |
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| Country | Link |
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| CN (1) | CN1234562C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102741531A (en) * | 2010-02-03 | 2012-10-17 | 丰田自动车株式会社 | Vibration damping control device for vehicle |
| CN104859713A (en) * | 2015-05-06 | 2015-08-26 | 安徽舒凯矿山机械有限公司 | Hydraulic pull rod used for operation vehicle under mine |
| CN108639150A (en) * | 2018-06-29 | 2018-10-12 | 重庆市华燕机械有限公司 | A kind of horizontal drawing lever for car steering |
-
2003
- 2003-07-14 CN CN 03141661 patent/CN1234562C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102741531A (en) * | 2010-02-03 | 2012-10-17 | 丰田自动车株式会社 | Vibration damping control device for vehicle |
| CN102741531B (en) * | 2010-02-03 | 2016-11-02 | 丰田自动车株式会社 | Damping control device for vehicle |
| CN104859713A (en) * | 2015-05-06 | 2015-08-26 | 安徽舒凯矿山机械有限公司 | Hydraulic pull rod used for operation vehicle under mine |
| CN104859713B (en) * | 2015-05-06 | 2018-08-14 | 安徽舒凯矿山机械有限公司 | Hydraulic pressure draw-bar used on working truck under a kind of mine |
| CN108639150A (en) * | 2018-06-29 | 2018-10-12 | 重庆市华燕机械有限公司 | A kind of horizontal drawing lever for car steering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1234562C (en) | 2006-01-04 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081128 Address after: No. 127 Meilin North Road, Ninghai County, Zhejiang Patentee after: Ningbo Yongxin Auto Components Manufacturing Co., Ltd. Address before: Room 5, building 501, three District, Chengnan, Fenghua, Zhejiang Patentee before: Jiao Yongyi |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Yongxin Auto Components Manufacturing Co., Ltd. Assignor: Jiao Yongyi Contract fulfillment period: 2008.9.9 to 2018.9.9 contract change Contract record no.: 2008990000677 Denomination of invention: Automobile reversing auto-comeandgo vibration damping cross tie device Granted publication date: 20060104 License type: Exclusive license Record date: 20081010 |
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| ASS | Succession or assignment of patent right |
Owner name: NINGBO YONGXIN CAR PARTS MANUFACTURING CO., LTD. Free format text: FORMER OWNER: JIAO YONGYI Effective date: 20081128 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.9 TO 2018.9.9; CHANGE OF CONTRACT Name of requester: NINGBO YONGXIN CAR PARTS MANUFACTURING CO., LTD. Effective date: 20081010 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060104 Termination date: 20100714 |