CN105351467B - Frictional torque-converters - Google Patents
Frictional torque-converters Download PDFInfo
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- CN105351467B CN105351467B CN201510923328.5A CN201510923328A CN105351467B CN 105351467 B CN105351467 B CN 105351467B CN 201510923328 A CN201510923328 A CN 201510923328A CN 105351467 B CN105351467 B CN 105351467B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/48—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members with members having orbital motion
- F16H15/50—Gearings providing a continuous range of gear ratios
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
The present invention discloses a kind of frictional torque-converters, including inner ring, big roller and outer ring, and inner ring is input unit, and at least two baltimore grooves are arranged on inner circumference side ring surface, and each baltimore groove respectively corresponds a big roller；Outer ring is output unit, and exterior ring cap is coaxially laid outside inner ring and with inner ring, and the inside circumference face of outer ring forms outer ring interior rollaway nest and cooperates with each roller.When revolving speed and load change, roller realizes adaptive work under the collective effect of centrifugal force and inner ring cam, finally realizes locking output, fluid drive and the bending moment of frictional torque-converters, meets different applications.The torque-converters structure has many advantages, such as that structure is simple, transmission efficiency is high, variable speed, adaptive strong, has the function of automatic blocking, energy conservation and environmental protection.
Description
Technical field
The present invention discloses a kind of frictional torque-converters, can be realized the transmission system of variable speed, automatic torque-changing.
Background technique
Currently, most widely used torque-converters is fluid torque-converter, also known as torque converter is mounted on engine and speed change
Between device, with hydraulic oil (ATF) for working media, transmitting torque, bending moment, the effect of speed change and clutch are played.It is one kind with liquid
Body is the non-rigid torque converter of working media, is one of pattern of hydraulic power, application is extremely extensive.Fluid torque-converter is
It is made of pump impeller, turbine and guide wheel etc., fluid torque-converter not only increases the torque of engine, but also realizes engine and oneself
Flexible connection between dynamic gearbox had not only efficiently solved the problems, such as the flame-out of engine but also can realize freely to move certainly
Gear.
The major defect of fluid torque-converter is that structure is complicated, and higher cost, quality is larger, and since there are fluid power damages
It loses, the transmission efficiency of machine is made to decrease, thus machine fuel economy and propulsive efficiency decrease.In order to solve this
Problem has a lock-up clutch on the torque converter on some automobiles to improve transmission efficiency, but complicated system and
Expensive transmission parts are all to allow the main problem of market in repair service and user's headache all the time.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of frictional torque-converters, to friction, transmission, material and
On the basis of the multisystems researchs such as lubrication, by completely new design, changes traditional torque-converters form, simplify the knot of torque-converters
Structure improves transmission efficiency, reduces cost, has strong superior performance, adaptivity, variable speed, automatic blocking, environmentally protective etc.
Advantage.
In order to achieve the above objectives, the present invention is achieved by the following technical solutions：
A kind of frictional torque-converters, including inner ring, big roller and outer ring, wherein：
Inner ring is input unit, and at least two baltimore grooves, each baltimore groove difference are arranged on inner circumference side ring surface
A corresponding big roller；
Outer ring is output unit, and exterior ring cap is coaxially laid outside inner ring and with inner ring, and the inside circumference face of outer ring is formed
Outer ring interior rollaway nest simultaneously cooperates with each roller crush-cutting；
Big roller, is set between inner and outer rings, has gap between the big roller in adjacent baltimore groove, it is therefore an objective to every
Roller in one baltimore groove individually can pass to outer ring output by inner ring input conversion；
When revolving speed and load change, each roller realizes adaptive work under the collective effect of centrifugal force and inner ring,
Simultaneously by the mechanical friction transmission between inner ring and roller, roller and outer ring, automatic blocking output, fluid drive and change are realized
Square.
Further, the power that the inner ring of frictional torque-converters acts on big roller is transmitted to outer ring, at this point, active force becomes
Change, meanwhile, the arm of force is elongated, and formula is as follows：
Torque formula：T=FL；
Wherein：
T is torque；
F is the power of driving rotation；
L is the arm of force；
FXFor the tangential force of single roller and outer ring interior rollaway nest；
FYFor the radial force of single roller and outer ring interior rollaway nest；
FFromFor the centrifugal force of big roller；
α is inner ring and corresponding big roller pressure angle；
M is big roller quality；
V is linear velocity of the big roller with respect to outer ring interior rollaway nest；
R is the radius of outer ring interior rollaway nest；
The bending moment of frictional torque-converters is codetermined by the centrifugal force of the arm of force, pressure angle α and big roller.
Further, when the revolving speed of frictional torque-converters reaches certain speed and smaller load, work of each roller in static friction
It is linked into an integrated entity with lower inner ring rotation and outer ring, torque converter locking output, inner ring revolving speed n1=outer ring n2；When load continues to increase
When to a certain extent, the speed n of outer ring2It reduces, each roller and outer ring relative motion are in slipping state, n1>n2, each rolling at this time
Column realizes fluid drive and bending moment under the action of inner ring, to meet the requirement of load；After acting on a period of time, speed is promoted,
Load reduces, and automatically switches to static friction by dynamic friction between roller and outer ring, and coefficient of friction increases, inner ring, each roller and outer
Ring is again coupled to integral n1=n2, automatic blocking exports torque-converters again.
Further, the inner ring and roller form pressure angle α, and pressure angle α is 12 °~40 °.
Further, outer ring interior rollaway nest diameter D and big roller diameter d ratio D/d=1.2~6, outer ring interior rollaway nest diameter D with
The ratio D/d size of big roller diameter d determines the length variation of arm of force L.
Further, the gap s between adjacent big roller>0.2mm.
Further, more than one small roller is equipped between adjacent big roller, each small roller diameter is less than big roller, small rolling
For column on the inner ring periphery between inner ring baltimore groove, the outer rollaway nest face of small roller is outer ring inside circumference face.Preferably, phase
Between adjacent small roller and the gap s of big roller and small roller>0.2mm.
The invention has the advantages that：
(1) structure is simple
Frictional torque-converters main structure body is made of inner ring, roller and outer ring, compared to pump impeller in torsion torque-converters, turbine and
For guide wheel, structure is simple, highly reliable, at low cost, environmentally protective.
(2) has the function of fluid drive, automatic increasing square and automatic blocking
1) when revolving speed and load change, large and small roller is realized under the collective effect of centrifugal force and inner ring cam
Adaptive work, finally realizes locking output, fluid drive and the bending moment of frictional torque-converters；
2) the structure design of inner ring, big roller, small roller and outer ring has codetermined the range of fluid drive and has increased square
Therefore multiple can match different parameters to meet the requirement of different application.
(3) transmission efficiency is high
According to law of conservation of energy, input energy other than very small part is converted into the energy loss of roller rotation,
It is remaining all for exporting, therefore, compared with fluid moment device：Its oil temperature is low, transmission response is fast, and transmission efficiency is high.
The frictional torque-converters structure of the present invention, is mainly used in automobile, engineering machinery, military vehicle, petroleum, chemical industry, mine
The fields such as mountain, metallurgical machinery, it is very widely used.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the big roller stress analysis schematic diagram of frictional bending moment of the invention.
The frictional bending moment outer ring of Fig. 3 present invention and inner ring cam rotate schematic diagram.
Fig. 4 is that the present invention only includes big roller structure schematic diagram.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings：
Embodiment：Referring to Fig. 4, a kind of frictional torque-converters, including inner ring 1, big roller 2 and outer ring 3, wherein：
Inner ring 1 is input unit, and at least two baltimore grooves 101 are arranged on inner circumference side ring surface and form interior ring convex
Wheel, each baltimore groove respectively correspond a big roller, 3 baltimore grooves and corresponding big roller 2 are arranged in Fig. 4；
Outer ring 3, is output unit, 3 sets of outer ring it is outer in inner ring 1 and with the coaxial laying of inner ring 1, the inside circumference of outer ring 3
Face forms outer ring interior rollaway nest and cooperates with each roller crush-cutting, and crush-cutting here refers to that roller face is pressed in outer ring interior rollaway nest, due to
Roller and outer ring are arcwall face, and the two is necessarily tangent to be compressed；
Big roller 2, is set between inner and outer rings, has gap between the big roller in adjacent baltimore groove, it is therefore an objective to every
Roller in one baltimore groove independently passes to outer ring 3 by the input conversion of inner ring 1 and exports；
When revolving speed and load change, each roller 2 realizes adaptive work under the collective effect of centrifugal force and inner ring 1
Make, while by the mechanical friction transmission between inner ring 1 and roller 2, roller 2 and outer ring 3, realizing that automatic blocking exports, is automatic
Speed change and bending moment.
Frictional torque-converters, inner ring 1 can be connected to form power input with input shaft, and outer ring 3 can be with output flange
Or the connection of other output blocks, work and fluid torque-converter have difference substantially, it can be according to the change of load and speed
Change, under the collective effect of centrifugal force and inner ring cam, be driven by the mechanical friction between inner ring and size roller and outer ring,
Realize the functions such as automatic blocking, fluid drive and bending moment.
The present invention plants frictional torque-converters structure comprising input shaft, inner ring cam, big roller, small roller, outer ring and defeated
Flange out.Power is transmitted by input shaft, and input shaft is connect with inner ring cam；Load is transferred to output flange；Inner ring cam with
Outer ring coaxial arrangement；Circumference places multiple big rollers between inner ring cam and outer ring, and outer ring is connect with output flange.
Such as Fig. 1, more than one small roller 4 is equipped between adjacent big roller 2, each small 4 diameter of roller is less than big roller 2,
For small roller 4 on the inner ring periphery between inner ring baltimore groove, the outer rollaway nest face of small roller is outer ring inside circumference face, Fig. 1
It is arranged on inner circumference side ring surface in embodiment and is arranged with 4 baltimore grooves 101.
As shown in Fig. 2, the increasing square of the frictional torque-converters of the present invention, which mainly passes through change roller 2, acts on 3 interior rollaway nest of outer ring
Active force and change the arm of force and realize.The power that inner ring 1 acts on big roller 2 is transmitted to outer ring 3, at this point, active force becomes
Change, meanwhile, the arm of force is also by L1Become L2, the arm of force is elongated.It is specific as follows：
According to torque formula：T=FL
Wherein：
T is torque；
F is the power of driving rotation；
L is the arm of force；
FXFor the tangential force of single roller and outer ring interior rollaway nest；
FYFor the radial force of single roller and outer ring interior rollaway nest；
FFromFor the centrifugal force of big roller；
α is inner ring and corresponding big roller pressure angle；
M is big roller quality；
V is linear velocity of the big roller with respect to outer ring interior rollaway nest；
R is the radius of outer ring interior rollaway nest.
According to Fig. 1 and 2, the outer side ring surface of inner ring 1 is equipped with baltimore groove 101 and forms inner ring cam, and each baltimore groove is right respectively
Answer one big roller 2.The ratio D/d size of outer ring interior rollaway nest diameter D and big roller diameter d determines arm of force L variation multiple
Size, L in Fig. 21Expression inner ring cam baltimore groove is at a distance from the contact point of big roller to center of circle o, L2Indicate outer ring interior rollaway nest with
The contact point of big roller is to the distance of center of circle o, and wherein D/d value is bigger, L2/L1Ratio is smaller, the arm of force change multiple it is small, it is on the contrary then
It is long to change multiple.Arm of force variation multiple is small not to be play a part of to increase square, although multiple too increasing square effect greatly is obvious, is unable to satisfy
The requirement of revolving speed, therefore, outer ring interior rollaway nest diameter D and big roller diameter d ratio D/d=1.2~6, big roller diameter account for outer ring
The 1/6~5/6 of interior rollaway nest diameter, including all values between 1/6 to 5/6, such as 2/6,2.5/6,3/6,3.5/6,4/6, into
And the corresponding multiple for causing the arm of force to change is 1.5~5.5.
Meanwhile according toFFrom, when the timing of revolving speed one, the multiple of rotary driving force F variation by
It determines, i.e., determines that the value of tan α has to be larger than friction system by the pressure angle α and friction coefficient μ of inner ring cam and corresponding big roller
μ is counted, it is too small to cannot achieve dynamic bending moment.Under the premise of herein, pressure angle α is smaller, and torque increment multiple is larger, otherwise torque increment multiple is then
It is smaller.Assuming that friction coefficient μ=0.08, when α=10 °,When α=30 °,
According to frictional torque-converters Structural Design Requirement, inner ring cam and corresponding big roller pressure angle α are 12 °~40 °.
The bending moment of the frictional torque-converters of the present invention is codetermined by D/d value, pressure angle α and centrifugal force, therefore, Ke Yigen
According to load and the requirement of operating condition, frictional torque-converters structure is designed, to meet the application of different field.
In Fig. 1, inner ring by with big roller frictional drive, and then realize frictional bending moment with the friction of small roller and outer ring
The work of device, the final function of realizing fluid drive and bending moment.Wherein, the number of big roller and inner ring cam groove is opposite
It answers, the number of big roller is 2 or more, and when the number of big roller is 1, inner ring cam is difficult to drive big roller and roller
It rotates, frictional torque-converters can not work normally.
Minimum clearance s between each adjacent roller of the present invention is greater than 0.2mm, due to depositing for mismachining tolerance and rigging error
, when the gap between adjacent roller be less than 0.2mm when, frictional force torque-converters is easy to appear stuck damage, therefore between roller
Gap cannot be less than 0.2mm, and the gap s between adjacent roller of the present invention is greater than 0.2mm, refer not only to the gap of adjacent small roller,
Also be suitble between big roller and small roller, small roller is to be arranged between two big rollers and can roll, therefore, inner ring by with it is big
Roller frictional drive, big roller pushes adjacent small roller in turn, and then realizes frictional become with the friction of small roller and outer ring
The work of square device.
As shown in figure 3, the locking principle of frictional torque-converters of the invention：When revolving speed reaches certain speed and loads smaller
When, large and small the roller rotation of inner ring cam and outer ring under the action of static friction link into an integrated entity, torque converter locking output, n1=
n2；When load continues to increase to a certain extent, the speed n of outer ring2It reduces, each roller and outer ring relative motion are in skidding shape
State, n1> n2Each roller realizes fluid drive and bending moment under the action of interior ring convex wheel at this time, to meet the requirement of load.Effect
After a period of time, speed is promoted, and load reduces, and automatically switches to static friction by dynamic friction between large and small roller and outer ring, is rubbed
Coefficient increases, and inner ring cam, big roller, small roller and outer ring are again coupled to integral n1=n2, automatic blocking is defeated again for torque-converters
Out.
The present invention discloses a kind of frictional torque-converters structure comprising input shaft, inner ring cam, big roller, roller, outer ring
And output flange.Power is transmitted by input shaft, and input shaft is connect with inner ring cam；Load is transferred to output flange；Interior ring convex
Wheel is coaxially disposed with outer ring；Circumference places multiple big rollers between inner ring cam and outer ring, and outer ring is connect with output flange.When turn
When speed and load change, roller realizes adaptive work under the collective effect of centrifugal force and inner ring cam, final to realize
Locking output, fluid drive and the bending moment of frictional torque-converters, meet different applications.The torque-converters structure has structure letter
It is list, transmission efficiency height, variable speed, adaptive strong, have many advantages, such as automatic blocking function, energy conservation and environmental protection.
In summary, the torque-converters structure is with structure is simple, transmission efficiency is high, is realized according to load and the variation of speed
Fluid drive and automatic increasing square, have many advantages, such as automatic blocking.Change traditional torque-converters form, reduces cost, adaptivity
By force, environmentally protective, significant effect.
The foregoing descriptions are merely the embodiment using this origination techniques content, any those skilled in the art use this wound
Make done modifications and changes, all belong to the scope of the patents of this creation opinion, and is not limited to those disclosed embodiments.
Claims (10)
1. a kind of frictional torque-converters, it is characterised in that including inner ring, big roller and outer ring, wherein：
Inner ring is input unit, at least two baltimore grooves is arranged on inner circumference side ring surface, and each baltimore groove respectively corresponds
One big roller；
Outer ring is output unit, and exterior ring cap is coaxially laid outside inner ring and with inner ring, and the inside circumference face of outer ring forms outer ring
Interior rollaway nest simultaneously cooperates with each roller crush-cutting；
Big roller, is set between inner and outer rings, has gap between the big roller in adjacent baltimore groove；
When revolving speed and load change, each roller realizes adaptive work under the collective effect of centrifugal force and inner ring, simultaneously
By the mechanical friction transmission between inner ring and roller, roller and outer ring, automatic blocking output, fluid drive and bending moment are realized；
The power that the inner ring of frictional torque-converters acts on big roller is transmitted to outer ring, at this point, active force changes, meanwhile, power
Arm is elongated, and formula is as follows：
Torque formula：T=FL；
Wherein：
T is torque；
F is the power of driving rotation；
L is the arm of force；
FXFor the tangential force of single roller and outer ring interior rollaway nest；
FYFor the radial force of single roller and outer ring interior rollaway nest；
FFromFor the centrifugal force of big roller；
α is inner ring and corresponding big roller pressure angle；
M is big roller quality；
V is linear velocity of the big roller with respect to outer ring interior rollaway nest；
R is the radius of outer ring interior rollaway nest；
μ coefficient of friction；
The bending moment of frictional torque-converters is codetermined by the centrifugal force of the arm of force, pressure angle α and big roller；
When the revolving speed of frictional torque-converters reaches certain speed and smaller load, each roller inner ring under the action of static friction is rotated
It links into an integrated entity with outer ring, torque converter locking output, inner ring revolving speed n1=outer ring n2；When load continues to increase to a certain extent,
The speed n of outer ring2It reduces, each roller and outer ring relative motion are in slipping state, n1>n2, work of each roller in inner ring at this time
Under, fluid drive and bending moment are realized, to meet the requirement of load；After acting on a period of time, speed is promoted, and load reduces, rolling
Static friction is automatically switched to by dynamic friction between column and outer ring, coefficient of friction increases, and inner ring, each roller and outer ring are again coupled into
Integrated n1=n2, automatic blocking exports torque-converters again.
2. frictional torque-converters according to claim 1, it is characterised in that：The inner ring and big roller form pressure angle α,
Pressure angle α is 12 °~40 °.
3. frictional torque-converters according to claim 1 or 2, it is characterised in that：Outer ring interior rollaway nest diameter D and big roller are straight
The ratio D/d size of diameter d ratio D/d=2.4~6, outer ring interior rollaway nest diameter D and big roller diameter d determine that the length of arm of force L becomes
Change.
4. frictional torque-converters according to claim 1 or 2, it is characterised in that：The gap s of adjacent big roller>0.2mm.
5. frictional torque-converters according to claim 3, it is characterised in that：The gap s of adjacent big roller>0.2mm.
6. frictional torque-converters described according to claim 1 or 2 or 5, it is characterised in that：One is equipped between adjacent big roller
Above small roller, each small roller diameter are less than big roller, and small roller is small on the inner ring periphery between inner ring baltimore groove
The outer rollaway nest face of roller is outer ring inside circumference face.
7. frictional torque-converters according to claim 3, it is characterised in that：It is equipped between adjacent big roller more than one
Small roller, each small roller diameter are less than big roller, and small roller is on the inner ring periphery between inner ring baltimore groove, small roller
Outer rollaway nest face is outer ring inside circumference face.
8. frictional torque-converters according to claim 4, it is characterised in that：It is equipped between adjacent big roller more than one
Small roller, each small roller diameter are less than big roller, and small roller is on the inner ring periphery between inner ring baltimore groove, small roller
Outer rollaway nest face is outer ring inside circumference face.
9. frictional torque-converters according to claim 6, it is characterised in that：Between adjacent small roller and big roller and small rolling
The gap s of column>0.2mm.
10. frictional torque-converters according to claim 7 or 8, it is characterised in that：Between adjacent small roller and big roller with
The gap s of small roller>0.2mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923328.5A CN105351467B (en) | 2015-12-11 | 2015-12-11 | Frictional torque-converters |
| PCT/CN2016/109207 WO2017097254A1 (en) | 2015-12-11 | 2016-12-09 | Friction type torque converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923328.5A CN105351467B (en) | 2015-12-11 | 2015-12-11 | Frictional torque-converters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105351467A CN105351467A (en) | 2016-02-24 |
| CN105351467B true CN105351467B (en) | 2018-11-16 |
Family
ID=55327503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510923328.5A Active CN105351467B (en) | 2015-12-11 | 2015-12-11 | Frictional torque-converters |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105351467B (en) |
| WO (1) | WO2017097254A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351467B (en) * | 2015-12-11 | 2018-11-16 | 传孚科技（厦门）有限公司 | Frictional torque-converters |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3707888A (en) * | 1970-07-31 | 1973-01-02 | Roller Gear Ltd | Variable speed transmission |
| DE2658791C2 (en) * | 1976-12-24 | 1983-02-10 | Planetroll Antriebe Gmbh, 7932 Munderkingen | Infinitely adjustable friction gear |
| JPS5614646A (en) * | 1979-07-13 | 1981-02-12 | Yamakiyuu Chain Kk | Stepless speed changer |
| US4667525A (en) * | 1984-12-19 | 1987-05-26 | Henry Schottler | Variable speed frictional drive transmissions |
| CN2090457U (en) * | 1991-03-22 | 1991-12-11 | 中国科学院武汉波谱公司 | Ball type coaxial speed transmission |
| CN1043808C (en) * | 1995-05-09 | 1999-06-23 | 薛南庆 | Epicycle train regid mechanism |
| CN1058328C (en) * | 1996-11-18 | 2000-11-08 | 王俊卿 | Centrifugal wave steples torque converter |
| JP4129358B2 (en) * | 2002-02-07 | 2008-08-06 | 美和ロック株式会社 | Driving force transmission mechanism of motor-driven electric lock |
| GB0220443D0 (en) * | 2002-09-03 | 2002-10-09 | Orbital Traction Ltd | A continuously variable drive transmission device |
| CN102135147A (en) * | 2010-01-22 | 2011-07-27 | 陈伯恒 | Novel pin roller centrifugal clutch |
| EP2855976B1 (en) * | 2012-05-25 | 2019-02-20 | Genesis Advanced Technology Inc. | Speed change device |
| CN203756794U (en) * | 2013-12-25 | 2014-08-06 | 陕西科技大学 | Roller type overrunning clutch |
| CN203892406U (en) * | 2014-05-20 | 2014-10-22 | 崔书林 | Roller type overrun clutch |
| CN104976248B (en) * | 2015-06-26 | 2018-04-03 | 传孚科技（厦门）有限公司 | Double rolling key clutch |
| CN105351467B (en) * | 2015-12-11 | 2018-11-16 | 传孚科技（厦门）有限公司 | Frictional torque-converters |
| CN205173389U (en) * | 2015-12-11 | 2016-04-20 | 传孚科技（厦门）有限公司 | Friction formula torque converter |
-
2015
- 2015-12-11 CN CN201510923328.5A patent/CN105351467B/en active Active
-
2016
- 2016-12-09 WO PCT/CN2016/109207 patent/WO2017097254A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017097254A1 (en) | 2017-06-15 |
| CN105351467A (en) | 2016-02-24 |
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Effective date of registration: 20161223 Address after: 243000 Anhui City, Ma'anshan Province Economic and Technological Development Zone, Jinshan Road, No. 1, Building 102, room 1188, No. Applicant after: Ma'anshan Chuan Fu intelligent friction fulcrum Industry Research Institute Co. Address before: 361000 Fujian province Xiamen torch hi tech Zone (Xiangan) Industrial Zone Jianye Building Room L201 Applicant before: Chuan Fu Technology (Xiamen) Co., Ltd. |
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Effective date of registration: 20180726 Address after: 361000 Fujian Xiamen torch high tech Zone (Xiangan) Industrial Zone Xiangan No. 3701 North Road 6 Applicant after: Chuan Fu Technology (Xiamen) Co., Ltd. Address before: 243000 Room 102, 1188 Jinshan Road, Ma'anshan economic and Technological Development Zone, Ma'anshan, Anhui, 102 Applicant before: Ma'anshan Chuan Fu intelligent friction fulcrum Industry Research Institute Co. |
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