CN103499408A - Device for measuring tension of electric car - Google Patents
Device for measuring tension of electric car Download PDFInfo
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- CN103499408A CN103499408A CN201310375321.5A CN201310375321A CN103499408A CN 103499408 A CN103499408 A CN 103499408A CN 201310375321 A CN201310375321 A CN 201310375321A CN 103499408 A CN103499408 A CN 103499408A
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- hook
- moving part
- inductor
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- aluminium
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 76
- 238000006073 displacement reaction Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000004411 aluminium Substances 0.000 claims description 72
- 230000006698 induction Effects 0.000 claims description 50
- 238000009434 installation Methods 0.000 claims description 17
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 abstract description 3
- 210000000078 claw Anatomy 0.000 abstract 6
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The invention discloses a device for measuring tension of an electric car. The device for measuring the tension of the electric car comprises a rack, a power shaft, a fixed shaft and an aluminum claw tension sensor, wherein the fixed shaft is fixedly connected to the rack of the electric car through a bearing, the power shaft and the fixed shaft are in transmission through a chain, the aluminum claw tension sensor is fixed to the rack, a claw moving portion which can generate corresponding displacement changes through tension of the power shaft is arranged in the aluminum claw tension sensor, and an electronic sensor which is used for converting the displacement variation of the claw moving portion into a signal representing tension of a transmission system to the power shaft is arranged in the aluminum claw tension sensor. The size of an initial electric signal origin of the device for measuring the tension of the electric car is adjusted in the mode that screws in side face adjusting holes advance and retreat in the axial direction, and the initial electric signal origin can be more conveniently adjusted after assembly is carried out. Due to the fact that an external structure relative to a frame is adopted by the device for measuring the tension of the electric car, tension, relative to the fixed shaft, of the power shaft can be accurately measured, the structure is simple, performance is stable and reliable, detection is easy, the appearance is more attractive, and replacement and maintenance are easy.
Description
Technical field
The present invention relates to the measurement mechanism technical field, especially relate to a kind of tension measuring device of electric motor car.
Background technology
In prior art, the electric motor cars such as battery-operated motor cycle and electric bicycle help helping in the system of stepping on to step on sensor to be useful on test and to help and step on rotating speed, help the measurement mechanism of stepping on driving-chain tension force, pulling force or axis moment etc.Help and step on speed probe: can't help the size of stepping on strength by sensing, also just can't realize helping and step on the better comfort level of riding.Help and step on the driving-chain tension pick-up: affect outward appearance, affect complete vehicle structure.Axis moment sensor: most of plastic bearing bowl that adopts, deformation its deformation size of sensing again when stressed by it like this because deformation recovers slow, causes to help to step on can't return in time the initialize signal size when vertical down at every turn.
Floral disc axis torque sensor: complex structure, cost compare is high.This kind of aluminium hook pulling force sensor electronic inductor module and output wire rod are built in aluminium hook inside, to the vehicle frame processing request is relatively lower and profile is more attractive in appearance, reduce the vehicle frame cost like this.The initial electrical signal initial point of tension measuring device,, without the electric signal size of pulling force condition tension measuring device output, employing side adjusting hole inside screw axially advance and retreat mode is adjusted size, can more convenient adjustment initial electrical signal initial point after the assembling car.This hook sensor output signal is very fast to the pulling force response ratio.Therefore be necessary exploitation and improve the hook pulling force sensor that a cost performance is higher.
Summary of the invention
For the deficiency of prior art existence, the purpose of this invention is to provide a kind of tension measuring device of electric motor car, measurement mechanism adopts outlet structure, simple in structure, stable and reliable for performance, is easy to detect, changes and maintenance.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of tension measuring device of electric motor car, comprise frame, line shaft, stationary shaft and an aluminium hook pulling force sensor, stationary shaft is connected and fixed on the frame of electric motor car by bearing, line shaft and stationary shaft link transmission, the stationary plane of aluminium hook pulling force sensor is screwed in frame, aluminium hook pulling force sensor is provided with the hook moving part that produces change in displacement under an acting force of the pulling force at line shaft, be provided with one in it and convert the inductor of kinematic train to the electric signal of the pulling force size of line shaft to for the displacement by the hook moving part, inductor is arranged at the side of hook moving part.
Further, in technical scheme, described line shaft and stationary shaft are fixed with respectively the transmission fluted disc, and the transmission fluted disc of line shaft and the transmission fluted disc of stationary shaft are by chain or belt link.
Further, in technical scheme, a side of described hook moving part offers an open slot, and the openend of open slot penetrates the hook moving part, and the axis body end of line shaft is arranged in open slot and is fixed in the open slot place of aluminium hook.
Further in technical scheme, the middle part of described aluminium hook pulling force sensor offers groove body, groove body penetrates the aluminium hook along the thickness direction of aluminium hook, groove body is separated out described hook moving part at aluminium hook middle part, form respectively an aluminium hook arm in the both sides of hook moving part, the first side of aluminium hook arm is linked to respectively aluminium hook pulling force sensor, and the both sides of hook moving part are linked to respectively the second side of aluminium hook arm.
In further technical scheme, described ditch, a side of groove body is arranged to an induction cavity, and induction cavity and moving part are adjacent, and inductor is built in installation cavity.
Further in technical scheme, described aluminium hook offers an installation cavity, the intrinsic electronic inductor of installation cavity internal lock, extend an electronic induction circuit that is fixed with magnetic field intensity in electronic inductor, electronic inductor is provided with a moving part, fix an induction magnetite coordinated with the electronic induction circuit in moving part, magnetite is near the electronic induction circuit.
Further, in technical scheme, the moving part inside of described electronic inductor has former point voltage to adjust screw, and former point voltage is adjusted turnbuckle and is provided with spring.
Further in technical scheme, described electronic inductor comprises an electronic inductor fixed part, the electronic induction circuit is fixed in the electronic inductor fixed part, and the electronic inductor fixed part is fixed in installation cavity, and a side of electronic inductor fixed part is extended described moving part.
Further, in technical scheme, described aluminium hook pulling force inductor upper end offers some screw mounting holes, and the upper end of aluminium hook offers wire casing, and the electronic induction circuit of electronic inductor is connected with signal wire, and signal wire is arranged in wire casing.
Further in technical scheme, described aluminium hook pulling force inductor offers adjustment hole, adjustment hole penetrates in induction cavity, and former point voltage is adjusted screw and is screwed in the moving part of electronics sensor, and interior adjusting of moving part that the adjustment screwdriver enters the electronics sensor through adjustment hole adjusted screw.
After adopting said structure, the advantage that compared to the prior art the present invention had is: measurement mechanism of the present invention adopts outlet structure, simple in structure, can measure the pulling force of line shaft with respect to stationary shaft, and export corresponding voltage signal, versatility and compatible strong, stable and reliable for performance, be easy to detect, change and maintenance, and can simplify the structure of motor, improve the serviceability of motor.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation that the present invention is equipped with the aluminium hook of inductor.
Fig. 3 is the front view of Fig. 2.
Fig. 4 is the decomposing schematic representation of Fig. 2.
In figure:
Frame 1,
Line shaft 2,
Stationary shaft 3,
Aluminium hook pulling force inductor 4,
Hook moving part 5,
Electronic inductor 6,
Transmission fluted disc 7,
Electronic inductor moving part 14,
Former point voltage is adjusted screw 15,
Screw mounting hole 18,
Aluminium hook arm 23,
Electronic inductor fixed part 25.
Embodiment
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment, see shown in Fig. 1 to Fig. 4: a kind of tension measuring device of electric motor car, comprise frame 1, line shaft 2, stationary shaft 3 and an aluminium hook pulling force sensor 4, stationary shaft 3 is connected and fixed on the frame 1 of electric motor car by bearing, line shaft 2 and stationary shaft 3 link transmissions, the stationary plane 22 of aluminium hook pulling force sensor 4 is screwed in frame 1, aluminium hook pulling force sensor 4 is provided with the hook moving part 5 that produces change in displacement under an acting force of the pulling force at line shaft 2, be provided with one in it and convert the inductor 6 of kinematic train to the electric signal of the pulling force size of line shaft 2 to for the displacement by hook moving part 5, inductor 6 is arranged at the side of hook moving part 5.Offer variator screw hole 24 on aluminium hook pulling force inductor 4, for variator is installed.Vehicle frame, in the outside, has corresponding aluminium hook screw 18 3 holes slightly bigger than normal, by screw, vehicle frame is locked on aluminium hook screw hole 18.Line shaft locks in the axial trough 8 of aluminium hook by screw.Line shaft 2 and stationary shaft 3 are by chain or belt gear, and on transmission fluted disc 7 difference stationary power axles 2 and stationary shaft 3, the transmission fluted disc 7 of line shaft 2 and the transmission fluted disc of stationary shaft 37 are by chain or belt link.
Aluminium hook pulling force inductor 4 is provided with under an acting force of the lateral pull at line shaft 2 and produces the moving part 5 that relative frame transversal displacement changes, the middle part of aluminium hook pulling force inductor 4 offers groove body 9, groove body 9 is separated out the described section 5 that relatively moves at aluminium hook 4 middle parts, the relatively move two ends of section 5 are respectively hook arm 23 and are linked to aluminium hook fixed position, 3 screw 18 parts are aluminium hook fixed position, and it and vehicle frame are close to.Hook arm 23 maintains the equivalent balance of line shaft 2 pulling force sizes and moving part 5 transversal displacement sizes.Groove body 9 penetrates groove along the thickness direction of aluminium hook, and a side of groove body 9 is arranged to an induction cavity 10, and electronic induction chamber 10 is adjacent with the section 5 that relatively moves, and in electronic inductor 6, inserts in the installation cavity 11 of aluminium hook.
One side of hook moving part 5 offers an open slot 8, and the openend of open slot 8 penetrates hook moving part 5, and the axis body end of line shaft 2 is arranged in open slot 8 and is fixed in open slot 8 places of aluminium hook 4.
The middle part of aluminium hook pulling force sensor 4 offers groove body 9, groove body 9 penetrates aluminium hook 4 along the thickness direction of aluminium hook 4, groove body 9 is separated out described hook moving part 5 at aluminium hook 4 middle parts, form respectively an aluminium hook arm 23 in the both sides of hook moving part 5, the first side of aluminium hook arm 23 is linked to respectively aluminium hook pulling force sensor 4, and the both sides of hook moving part 5 are linked to respectively the second side of aluminium hook arm 23.
One side of groove body 9 is arranged to an induction cavity 10, and induction cavity 10 is adjacent with moving part 5, and inductor 6 is built in installation cavity 11.Aluminium hook 4 offers an installation cavity 11, the intrinsic electronic inductor 6 of installation cavity 11 internal lock, extend an electronic induction circuit 13 that is fixed with magnetic field intensity in electronic inductor 6, electronic inductor 6 is provided with a moving part 14, the interior induction magnetite 16 coordinated with electronic induction circuit 13 of fixing of moving part 14, magnetite 16 is near electronic induction circuit 13.Moving part 14 inside of electronic inductor 6 have former point voltage to adjust screw 15, and former point voltage is adjusted screw 15 and is arranged with spring 17.
Electronic inductor 6 comprises an electronic inductor fixed part 25, and electronic induction circuit 13 is fixed in electronic inductor fixed part 25, and electronic inductor fixed part 25 is fixed in installation cavity 11, and a side of electronic inductor fixed part 25 is extended described moving part 14.Aluminium hook pulling force inductor 4 upper ends offer some screw mounting holes 18, and the upper end of aluminium hook 4 offers wire casing 19, and the electronic induction circuit 13 of electronic inductor 6 is connected with signal wire 20, and signal wire 20 is arranged in wire casing 19.Aluminium hook pulling force inductor 4 offers adjustment hole 21, adjustment hole 21 penetrates in induction cavity 10, former point voltage is adjusted screw 15 and is screwed in the moving part of electronics sensor, and interior adjusting of moving part that the adjustment screwdriver enters the electronics sensor through adjustment hole 21 adjusted screw.
Wherein, electronic inductor mainly is comprised of 5 parts: be respectively inductor fixed part 25, lock in the installation cavity 11 of aluminium hook by screw, electronic induction circuit 13 is fixed its inside; Electronic induction circuit part 13; Inductor moving part 14, be close to hook moving part 5 by adjusting screw; Induction magnetite 16, be fixed on inductor moving part inside; The magnetic field induction initial point is adjusted screw 17.
Aluminium hook pulling force sensor 4 mainly consists of 8 parts: aluminium hook and stationary plane 22 thereof, by screw hole 18 and the part of vehicle frame locking on a plane; The installation cavity 11 of aluminium hook, use and the installation electronic inductor 6 that locks; Moving part 5, for 2 of stationary power axle, make the moving part 14 of inductor 6 that the change in displacement of corresponding size also occurs during simultaneously for ability change in displacement when line shaft 2 under tension; Magnetic field induction initial point adjusting hole 21, screwdriver, by this hole, is adjusted the magnetic field induction initial point and is adjusted screw 15; Line outlet groove 19, use with output line and be built in its inside; Groove 9, for keeping apart fixed part and moving part 5 and aluminium hook arm 23; Aluminium hook arm 23, according to the lateral stressed size of moving part 5,23, aluminium hook arm produces respective transversal displacement size and makes its balance of power, has while not stressing and makes in time moving part 5 return to original position; Variator locking hole is selected according to customer service.
The present invention utilizes the principle of Hall element flux of magnetic induction to test the pulling force of line shaft 2, when induction magnetite 16 moves, hall sensing element in electronic induction circuit 13 can be sensed the variable quantity of magnetic flux, variable quantity size by magnetic flux calculates the pulling force size of line shaft 2 with respect to stationary shaft 4, or from concerning that conversion table directly obtains the pulling force of line shaft 2 with respect to stationary shaft 4.Particularly, when line shaft 2 under tension, line shaft 2 is moved hook moving part 5 to, thereby make the distortion of hook arm make hook move section 5 and produce a horizontal displacement, at this moment, electronic induction circuit 13 and induction magnetite 16 produce corresponding change in displacement thereupon, electronic induction circuit 13 is sensed the corresponding magnetic field intensity brought of movement of induction magnetite 16 and is produced a corresponding electric signal, electric signal can be simulation signal or digital signal, the size of the value of this electric signal is corresponding to the size of the displacement of hook moving part 5, the also size with respect to the pulling force of stationary shaft 4 corresponding to line shaft 2, and by signal wire 20, this electric signal is exported, thereby obtain the size of line shaft 2 with respect to the pulling force of stationary shaft 4.
The inside of displacement induction part 14 has former point voltage to adjust screw 15, and former point voltage is adjusted screw 15 and is arranged with spring 17.Screwdriver inserts in aluminium hook adjusting hole the former point voltage of regulating in electronic induction section 14 and adjusts the electronic induction circuit 13(Hall IC that screw 15 changes induction magnetite 16 relative induction device fixed parts) thus upper magnetic field intensity is regulated the initialize signal state of inductor 6.
Above content is only preferred embodiment of the present invention, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.
Claims (10)
1. the tension measuring device of an electric motor car, it is characterized in that: comprise frame (1), line shaft (2), stationary shaft (3) and an aluminium hook pulling force sensor (4), stationary shaft (3) is connected and fixed on the frame (1) of electric motor car by bearing, line shaft (2) and stationary shaft (3) link transmission, the stationary plane (22) of aluminium hook pulling force sensor (4) is screwed in frame (1), aluminium hook pulling force sensor (4) is provided with one and produces the hook moving part (5) of change in displacement under the pulling force acting force of line shaft (2), be provided with one in it and convert the inductor (6) of kinematic train to the electric signal of the pulling force size of line shaft (2) to for the displacement by hook moving part (5), inductor (6) is arranged at the side of hook moving part (5).
2. the tension measuring device of a kind of electric motor car according to claim 1, it is characterized in that: described line shaft (2) and stationary shaft (3) are fixed with respectively transmission fluted disc (7), and the transmission fluted disc (7) of line shaft (2) and the transmission fluted disc (7) of stationary shaft (3) are by chain or belt link.
3. the tension measuring device of a kind of electric motor car according to claim 1, it is characterized in that: a side of described hook moving part (5) offers an open slot (8), the openend of open slot (8) penetrates hook moving part (5), and the open slot (8) that the axis body end of line shaft (2) is arranged in open slot (8) and is fixed in aluminium hook (4) is located.
4. the tension measuring device of a kind of electric motor car according to claim 1, it is characterized in that: the middle part of described aluminium hook pulling force sensor (4) offers groove body (9), groove body (9) penetrates aluminium hook (4) along the thickness direction of aluminium hook (4), groove body (9) is separated out described hook moving part (5) at aluminium hook (4) middle part, form respectively an aluminium hook arm (23) in the both sides of hook moving part (5), the first side of aluminium hook arm (23) is linked to respectively aluminium hook pulling force sensor (4), the both sides of hook moving part (5) are linked to respectively the second side of aluminium hook arm (23).
5. the tension measuring device of a kind of electric motor car according to claim 4, it is characterized in that: described ditch, one side of groove body (9) is arranged to an induction cavity (10), and induction cavity (10) is adjacent with moving part (5), and inductor (6) is built in installation cavity (11).
6. the tension measuring device of a kind of electric motor car according to claim 5, it is characterized in that: described aluminium hook (4) offers an installation cavity (11), the intrinsic electronic inductor of installation cavity (11) internal lock (6), extend an electronic induction circuit (13) that is fixed with magnetic field intensity in electronic inductor (6), electronic inductor (6) is provided with a moving part (14), fix an induction magnetite (16) coordinated with electronic induction circuit (13) in moving part (14), magnetite (16) is near electronic induction circuit (13).
7. the tension measuring device of a kind of electric motor car according to claim 6, it is characterized in that: moving part (14) inside of described electronic inductor (6) has former point voltage to adjust screw (15), and former point voltage is adjusted screw (15) and is arranged with spring (17).
8. the tension measuring device of a kind of electric motor car according to claim 6, it is characterized in that: described electronic inductor (6) comprises an electronic inductor fixed part (25), electronic induction circuit (13) is fixed in electronic inductor fixed part (25), electronic inductor fixed part (25) is fixed in installation cavity (11), and a side of electronic inductor fixed part (25) is extended described moving part (14).
9. the tension measuring device of a kind of electric motor car according to claim 7, it is characterized in that: described aluminium hook pulling force inductor (4) upper end offers some screw mounting holes (18), the upper end of aluminium hook (4) offers wire casing (19), the electronic induction circuit (13) of electronic inductor (6) is connected with signal wire (20), and signal wire (20) is arranged in wire casing (19).
10. the tension measuring device of a kind of electric motor car according to claim 8, it is characterized in that: described aluminium hook pulling force inductor (4) offers adjustment hole (21), adjustment hole (21) penetrates in induction cavity (10), former point voltage is adjusted screw (15) and is screwed in the moving part of electronics sensor, and interior adjusting of moving part that the adjustment screwdriver enters the electronics sensor through adjustment hole (21) adjusted screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375321.5A CN103499408B (en) | 2013-08-26 | A kind of tension measuring device of electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375321.5A CN103499408B (en) | 2013-08-26 | A kind of tension measuring device of electric motor car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103499408A true CN103499408A (en) | 2014-01-08 |
| CN103499408B CN103499408B (en) | 2016-11-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432246A (en) * | 1980-12-12 | 1984-02-21 | Aci Australia Limited | Displacement and/or force measuring device and method |
| CN1219486A (en) * | 1998-12-23 | 1999-06-16 | 天津光电通信技术有限公司 | Controller for intelligent electric aid vehicle |
| TW200629035A (en) * | 2005-02-05 | 2006-08-16 | Mi-Ching Tsai | Modularized electric auxiliary pushing/pulling apparatus |
| CN101231203A (en) * | 2007-01-23 | 2008-07-30 | 苏州扬名机电有限公司 | Electric vehicle force-aid sensor plan using virgula supporting member deformation |
| CN202442831U (en) * | 2012-03-01 | 2012-09-19 | 无锡爱玛车业有限公司 | Wheel bearing pulling-out force testing device |
| KR101187254B1 (en) * | 2011-03-24 | 2012-10-02 | 금오기전 주식회사 | Contactless power measurement device of shaft |
| CN203443723U (en) * | 2013-08-26 | 2014-02-19 | 康献兵 | Pulling force measuring device of electric car |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432246A (en) * | 1980-12-12 | 1984-02-21 | Aci Australia Limited | Displacement and/or force measuring device and method |
| CN1219486A (en) * | 1998-12-23 | 1999-06-16 | 天津光电通信技术有限公司 | Controller for intelligent electric aid vehicle |
| TW200629035A (en) * | 2005-02-05 | 2006-08-16 | Mi-Ching Tsai | Modularized electric auxiliary pushing/pulling apparatus |
| CN101231203A (en) * | 2007-01-23 | 2008-07-30 | 苏州扬名机电有限公司 | Electric vehicle force-aid sensor plan using virgula supporting member deformation |
| KR101187254B1 (en) * | 2011-03-24 | 2012-10-02 | 금오기전 주식회사 | Contactless power measurement device of shaft |
| CN202442831U (en) * | 2012-03-01 | 2012-09-19 | 无锡爱玛车业有限公司 | Wheel bearing pulling-out force testing device |
| CN203443723U (en) * | 2013-08-26 | 2014-02-19 | 康献兵 | Pulling force measuring device of electric car |
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Effective date of registration: 20160810 Address after: 310 room 47, new man garden, Yushan Town, Kunshan Town, Jiangsu, 215000 Applicant after: Freq-variable electronic Science and Technology Ltd. is climbed in Kunshan Address before: 310, room 47, new man garden, Yushan Town, Kunshan Town, Suzhou City, Jiangsu, 215000 Applicant before: Kang Xianbing |
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Address after: 215300 Jianwei Auto Parts Logistics Market, 55 Chaoyang East Road, Kunshan Development Zone, Suzhou City, Jiangsu Province, 6 1705 Rooms Patentee after: Kunshan climbing Electronic Technology Co., Ltd. Address before: 215000 Room 310, 47 New Metropolitan Garden, Yushan Town, Kunshan City, Jiangsu Province Patentee before: Freq-variable electronic Science and Technology Ltd. is climbed in Kunshan |
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Effective date of registration: 20200902 Address after: 225700 Luo Gu industrial concentration area, Dai Nan Town, Xinghua City, Taizhou, Jiangsu Patentee after: TAIZHOU HUACHI STAINLESS STEEL PRODUCT Co.,Ltd. Address before: Chaoyang Road, Suzhou Development Zone in Kunshan City, Jiangsu province 215300 City No. 55 auto parts logistics market Jianwei building 1705 room 6 Patentee before: KUNSHAN PANDENG ELECTRONIC TECHNOLOGY Co.,Ltd. |