CN111917229A - Permanent magnet type stepping motor - Google Patents
Permanent magnet type stepping motor Download PDFInfo
- Publication number
- CN111917229A CN111917229A CN202010635173.6A CN202010635173A CN111917229A CN 111917229 A CN111917229 A CN 111917229A CN 202010635173 A CN202010635173 A CN 202010635173A CN 111917229 A CN111917229 A CN 111917229A
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- China
- Prior art keywords
- permanent magnet
- heat dissipation
- heat
- stepping motor
- rotating shaft
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
- H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
- H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
Abstract
The invention relates to the field of motors, in particular to a permanent magnet stepping motor which comprises a shell, a front cover, a rear cover and a rotor core, wherein the front cover for ventilation and dust prevention is fixedly arranged on the right side of the shell, the rear cover for heat dissipation is fixedly arranged on the left side of the shell, and the rotor core for buffering and heat dissipation is arranged in the shell. According to the permanent magnet stepping motor, the radiating fins are in contact with the rotating shaft through the radiating fins, the heat conducting block, the first radiating fan and the second radiating fan, the radiating fins are used for primarily radiating heat of the rotating shaft, meanwhile, heat on the surface of the rotating shaft can be transmitted to the heat conducting block, at the moment, heat near the heat conducting block enters the rear cover through the first groove and the ventilating pipe, the second radiating fan is driven to rotate under the rotating action of the rotating shaft, the two radiating fans are used for radiating heat inside the shell, the damage of the motor due to overhigh temperature inside the shell is avoided, the shell, the ventilating pipe and the rear cover are enabled to circulate, and the purpose of efficient radiating is achieved.
Description
Technical Field
The invention relates to the field of motors, in particular to a permanent magnet stepping motor.
Background
The permanent magnet type stepping motor is also called as a PM stepping motor, and a rotor adopts permanent magnet steel. The stator of the stepping motor is processed into claw-shaped tooth poles in a stamping mode, and the rotor adopts radial multi-pole magnetized permanent magnet steel. The motor has low cost, the principle is that the magnetic field generated by the current direction of the coil is mutually exclusive with the magnetic field of the rotor, so that the motor rotates forwards or backwards, the permanent magnet type stepping motor is divided into 2 phases and 4 phases, the torque and the volume are small, and the stepping angles are as follows: 5.625 degree/7.5 degree/11.25 degree/15 degree, there are two parts of rotor and stator in the motor: generally, the stator is a coil, and the rotor is a permanent magnet; the permanent magnet type stepping motor can also be a permanent magnet stator, and the rotor is a coil, so that the permanent magnet type stepping motor is widely applied to daily production and life of people along with the continuous development of social economy.
Permanent magnet stepping motor is generally when outdoor use, especially hot summer, the motor is at rotation in-process rapid heating up, lead to the inside temperature of motor constantly to increase, and the pivot is at long-time rotation process, the problem that generates heat can appear, can damage gradually down for a long time, the tradition majority is at simple heat dissipation fan of motor internally mounted, it is general to lead to the radiating effect, and the long-time rigid rotation of pivot receives the damage easily, make the life-span of motor receive the influence, be unfavorable for improving economic benefits, for this, a permanent magnet stepping motor is proposed and above-mentioned problem is solved.
Disclosure of Invention
The invention provides a permanent magnet type stepping motor aiming at the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a permanent magnet stepping motor comprises a shell, a front cover, a rear cover and a rotor core, wherein the front cover for ventilation and dust prevention is fixedly arranged on the right side of the shell, the rear cover for heat dissipation is fixedly arranged on the left side of the shell, and the rotor core for buffering heat dissipation is arranged inside the shell;
the motor comprises a shell, a stator core, a coil, a permanent magnet, a rotating shaft, a bearing I, a heat dissipation fan I, a permanent magnet, a rotor core, a bearing II and a heat dissipation fan II, wherein the top and the bottom of an inner cavity of the shell are both fixedly provided with the stator core, the inner side of the stator core is fixedly provided with the coil, the inner side of the coil is provided with the permanent magnet, the inner part of the permanent magnet is provided with the rotating shaft, and the surface of;
the rotor core is characterized in that a first groove is formed in the rotor core, a second groove is formed in the first groove, a buffer spring is fixedly arranged in the second groove, a heat conduction block is movably arranged at one end of the buffer spring, cooling fins are fixedly arranged at the bottom of the heat conduction block, a rotating shaft is movably arranged at the bottom of the cooling fins, the left side of the first groove is connected with a rear cover through a ventilation pipe, and a second cooling fan is arranged in the rear cover.
Specifically, the side of protecgulum begins to have the fixed slot, and the inside fixed mounting of fixed slot has the dust screen, the inboard fixed waterproof ventilated membrane that is provided with of dust screen, the inboard of waterproof ventilated membrane is provided with heat dissipation fan one.
Specifically, the top of the casing is fixedly provided with a charging port, the inside of the charging port is connected with a coil wire through a wire, and the coil is located between the stator core and the permanent magnet.
Specifically, the inside side fixed mounting who is close to the back lid of casing has bearing two, the fixed pivot that is provided with in center department of bearing two, the left end of pivot is fixed with the heat dissipation fan two that is located two one sides of bearing, and the heat dissipation fan two is located the inside of back lid.
Specifically, the radiating fins, the heat conducting blocks and the buffer springs are arranged three at equal intervals, a rotating shaft is movably arranged on one side, away from the heat conducting blocks, of each radiating fin, and the radiating fins and the heat conducting blocks are fan-shaped.
Specifically, the inside fixed mounting of protecgulum has bearing one, the fixed pivot that is provided with in center department of bearing one, the inside of protecgulum is provided with the heat dissipation fan one that is located the pivot surface, communicate each other between dust screen, waterproof ventilated membrane, protecgulum and the casing.
The invention has the beneficial effects that:
(1) the invention relates to a permanent magnet stepping motor, aiming at the problems that the traditional permanent magnet stepping motor has common heat dissipation effect and a rotating shaft is easy to be damaged, the heat dissipation plate, a heat conduction block, a first heat dissipation fan and a second heat dissipation fan are arranged, the heat dissipation plate is contacted with the rotating shaft, the heat dissipation plate is used for primarily dissipating heat of the rotating shaft, and simultaneously the heat on the surface of the rotating shaft can be transmitted into the heat conduction block, the heat near the heat conduction block enters a rear cover through a groove I and a ventilation pipe, the rotating shaft drives the second heat dissipation fan to rotate under the rotation action of the rotating shaft, the heat dissipation is carried out in two pairs of machine shells by using the heat dissipation fans, the damage of the motor caused by overhigh temperature in the machine shells is avoided, the machine shells, the ventilation pipes and the rear cover are circulated, the purpose of high-efficiency heat dissipation is achieved, the heat dissipation is carried out in the, the purpose of communicating with the outside is achieved, and the inside of the shell is convenient to dissipate heat in time.
(2) According to the permanent magnet type stepping motor, due to the arrangement of the dustproof net and the buffer spring, the dustproof net can effectively play a dustproof effect and prevent dust from entering the interior of the shell through the fixing groove, the waterproof breathable film can ensure the purposes of ventilation and heat dissipation and achieve a waterproof effect, the rotating shaft can drive the heat conduction block to buffer under the action of the buffer spring in the rotating process, and the heat conduction block is prevented from being rigidly connected with the first groove, so that the service life of the rotor core is prolonged, the rotating shaft can be protected in a buffering mode, and the service life of the rotating shaft is prolonged.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of a permanent magnet stepping motor according to the present invention;
fig. 2 is a front view of a front cover structure of a permanent magnet stepping motor according to the present invention;
fig. 3 is a cross-sectional view of a permanent magnet stepping motor according to the present invention;
fig. 4 is an enlarged schematic structural diagram of a portion a in fig. 3 of a permanent magnet type stepping motor according to the present invention;
fig. 5 is an enlarged schematic structural diagram of a portion B in fig. 3 of a permanent magnet stepping motor according to the present invention;
fig. 6 is a side view of a permanent magnet stepping motor rotor core structure provided by the present invention.
In the figure: 1. a housing; 11. a charging port; 12. a stator core; 13. a coil; 14. a permanent magnet; 15. a rotating shaft; 16. a first bearing; 17. a first heat dissipation fan; 2. a front cover; 21. a dust cover; 22. a dust screen; 23. a waterproof breathable film; 3. a rear cover; 31. a second heat dissipation fan; 32. a second bearing; (ii) a 4. A rotor core; 41. a first groove; 42. a heat sink; 43. a heat conducting block; 44. a second groove; 45. a buffer spring; 46. and a vent pipe.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-6, the permanent magnet stepping motor according to the present invention includes a casing 1, a front cover 2, a rear cover 3, and a rotor core 4, wherein the front cover 2 for ventilation and dust prevention is fixedly disposed on the right side of the casing 1, the rear cover 3 for heat dissipation is fixedly disposed on the left side of the casing 1, and the rotor core 4 for buffering and heat dissipation is disposed inside the casing 1;
the top and the bottom of the inner cavity of the machine shell 1 are both fixedly provided with a stator core 12, the inner side of the stator core 12 is fixedly provided with a coil 13, the inner side of the coil 13 is provided with a permanent magnet 14, the inner part of the permanent magnet 14 is provided with a rotating shaft 15, and the surface of the rotating shaft 15 is sequentially provided with a first bearing 16, a first heat dissipation fan 17, the permanent magnet 14, a rotor core 4, a second bearing 32 and a second heat dissipation fan 31 from right to left;
the rotor core 4 is provided with a first groove 41 inside, a second groove 44 inside the first groove 41, a buffer spring 45 is fixedly arranged inside the second groove 44, a heat conduction block 43 is movably arranged at one end of the buffer spring 45, a cooling fin 42 is fixedly arranged at the bottom of the heat conduction block 43, a rotating shaft 15 is movably arranged at the bottom of the cooling fin 42, the left side of the first groove 41 is connected with the rear cover 3 through a ventilation pipe 46, and a second cooling fan 31 is arranged inside the rear cover 3.
Specifically, the side of protecgulum 2 begins to have the fixed slot, and the inside fixed mounting of fixed slot has dust screen 22, the fixed waterproof ventilated membrane 23 that is provided with in inboard of dust screen 22, the inboard of waterproof ventilated membrane 23 is provided with a heat dissipation fan 17, and when heat dissipation fan 17 rotated the heat dissipation, be convenient for in time pass through the fixed slot with the inside hot-air of casing 1 and transmit away, is provided with dust screen 22 in the inside of fixed slot, can effectually play dustproof effect, avoids the dust to enter into the inside of casing 1 through the fixed slot, and ventilation cooling's purpose can be guaranteed in waterproof ventilated membrane 23's setting, can reach waterproof effect again to the result of use has been improved greatly.
Specifically, the top of the casing 1 is fixedly provided with a charging port 11, the inside of the charging port 11 is in wire connection with a coil 13 through a wire, the coil 13 is located between the stator core 12 and the permanent magnet 14, and the coil is connected with an external power supply through the wire, so that the inside of the casing 1 is charged, and the operation of the motor is ensured.
Specifically, inside side fixed mounting that is close to back lid 3 of casing 1 has two 32 bearings, the fixed pivot 15 that is provided with in center department of two 32 bearings, the left end of pivot 15 is fixed and is provided with two 31 heat dissipation fans that are located two 32 one sides of bearing, and two 31 inside that are located back lid 3 of heat dissipation fan. The rotating shaft 15 rotates to drive the second heat dissipation fan 31 to rotate, so that air generated by the second heat dissipation fan 31 enters the casing 1 through the ventilation pipe 46, the heat dissipation is performed on the inside of the casing 1 through the second heat dissipation fan 31, the phenomenon that the temperature inside the casing 1 is too high, the motor is damaged is avoided, and the service life of the permanent magnet type stepping motor is prolonged.
Specifically, the number of the radiating fins 42, the number of the heat conducting blocks 43 and the number of the buffer springs 45 which are arranged at equal intervals are three, the rotating shaft 15 is movably arranged on one side, away from the heat conducting blocks 43, of the radiating fins 42, the shapes of the radiating fins 42 and the heat conducting blocks 43 are fan-shaped, the rotating shaft 15 can generate heat in a long-time rotating process and can be gradually damaged in a long-time rotating process, the radiating fins 42 and the heat conducting blocks 43 are arranged, the radiating fins 42 are used for primarily radiating the rotating shaft 15, meanwhile, heat on the surface of the rotating shaft 15 can be transmitted to the heat conducting blocks 43, the heat near the heat conducting blocks 43 enters the rear cover 3 through the first grooves 41 and the vent pipes 46, the rotating shaft 15 drives the second radiating fans 31 to rotate, the second radiating fans 31 are used for radiating the inside of the machine shell 1, the phenomenon that the temperature inside the machine shell 1 is too high, reach high-efficient radiating purpose, pivot 15 can drive heat conduction piece 43 and cushion at buffer spring 45 effect at the rotation in-process simultaneously, avoids rigid connection between heat conduction piece 43 and recess 41 to be favorable to prolonging rotor core 4's life, also can buffer protection to pivot 15 simultaneously, improved pivot 15's life.
Specifically, the inside fixed mounting of protecgulum 2 has a bearing 16, the fixed pivot 15 that is provided with in center department of a bearing 16, the inside of protecgulum 2 is provided with the heat dissipation fan 17 that is located 15 surfaces of pivot, be intercommunication each other between dust screen 22, waterproof ventilated membrane 23, protecgulum 2 and the casing 1, utilize heat dissipation fan 17 and heat dissipation fan two 31 to dispel the heat to casing 1 inside, the heat of casing 1 inside transmits casing 1 outside through waterproof ventilated membrane 23 and dust screen 22, reaches the purpose with outside intercommunication, is convenient for in time dispel the heat to casing 1 inside to be favorable to prolonging the life of this motor.
When in use, the external power supply is connected by a lead, so as to electrify the coil 13 in the machine shell 1, the magnetic field generated by the current direction of the coil 13 is mutually repelled with the magnetic field of the permanent magnet 14, so that the rotating shaft 15 rotates, the rotating shaft 15 drives the heat-conducting block 43 to buffer under the action of the buffer spring 45 in the rotating process, the rigid connection between the heat-conducting block 43 and the first groove 41 is avoided, so that the service life of the rotor core 4 is prolonged, the rotating shaft 15 can be buffered and protected, the service life of the rotating shaft 15 is prolonged, the radiating fins 42 are contacted with the rotating shaft 15, the heat on the surface of the rotating shaft 15 can be primarily radiated by the radiating fins 42 and can be transmitted to the heat-conducting block 43, at the moment, the heat near the heat-conducting block 43 enters the rear cover 3 through the first groove 41 and the ventilating pipe 46, the rotating shaft, utilize two 31 of heat dissipation fan to dispel the heat to casing 1 inside, avoid the inside high temperature of casing 1, cause the damage of motor, make casing 1, circulation between ventilation pipe 46 and the back lid 3, reach high-efficient radiating purpose, utilize one 17 of heat dissipation fan and two 31 of heat dissipation fan to dispel the heat to casing 1 inside, the heat of casing 1 inside transmits casing 1 outside through waterproof ventilated membrane 23 and dust screen 22, reach the purpose with outside intercommunication, be convenient for in time dispel the heat to casing 1 inside, dust screen 22 can effectually play dustproof effect, avoid the dust to enter into the inside of casing 1 through the fixed slot, ventilation cooling's purpose can be guaranteed in the setting of waterproof ventilated membrane 23, can reach waterproof effect again.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a permanent magnet stepping motor, includes casing (1), protecgulum (2), back lid (3) and rotor core (4), its characterized in that: a front cover (2) for ventilation and dust prevention is fixedly arranged on the right side of the machine shell (1), a rear cover (3) for heat dissipation is fixedly arranged on the left side of the machine shell (1), and a rotor iron core (4) for buffering and heat dissipation is arranged in the machine shell (1);
the motor casing is characterized in that a stator core (12) is fixedly arranged at the top and the bottom of an inner cavity of the motor casing (1), a coil (13) is fixedly arranged on the inner side of the stator core (12), a permanent magnet (14) is arranged on the inner side of the coil (13), a rotating shaft (15) is arranged inside the permanent magnet (14), and a first bearing (16), a first heat dissipation fan (17), the permanent magnet (14), a rotor core (4), a second bearing (32) and a second heat dissipation fan (31) are sequentially arranged on the surface of the rotating shaft (15) from right to left;
the rotor core is characterized in that a first groove (41) is formed in the rotor core (4), a second groove (44) is formed in the first groove (41), a buffer spring (45) is fixedly arranged in the second groove (44), a heat conduction block (43) is movably arranged at one end of the buffer spring (45), cooling fins (42) are fixedly arranged at the bottom of the heat conduction block (43), a rotating shaft (15) is movably arranged at the bottom of the cooling fins (42), the left side of the first groove (41) is connected with a rear cover (3) through a ventilation pipe (46), and a second cooling fan (31) is arranged in the rear cover (3).
2. A permanent magnet stepping motor according to claim 1, wherein: the side of protecgulum (2) begins to have the fixed slot, and the inside fixed mounting of fixed slot has dust screen (22), the inboard fixed waterproof ventilated membrane (23) that is provided with of dust screen (22), the inboard of waterproof ventilated membrane (23) is provided with heat dissipation fan (17).
3. A permanent magnet stepping motor according to claim 1, wherein: the top of the machine shell (1) is fixedly provided with a charging port (11), the inside of the charging port (11) is in electric wire connection with a coil (13) through a conducting wire, and the coil (13) is located between the stator iron core (12) and the permanent magnet (14).
4. A permanent magnet stepping motor according to claim 1, wherein: the side fixed mounting that casing (1) is inside to be close to back lid (3) has bearing two (32), the center department of bearing two (32) is fixed and is provided with pivot (15), the left end of pivot (15) is fixed and is provided with the heat dissipation fan two (31) that are located bearing two (32) one side, and the inside that heat dissipation fan two (31) are located back lid (3).
5. A permanent magnet stepping motor according to claim 1, wherein: the radiating fins (42), the heat conducting blocks (43) and the buffer springs (45) are arranged in a three-layer mode at equal intervals, the rotating shaft (15) is movably arranged on one side, away from the heat conducting blocks (43), of the radiating fins (42), and the heat conducting blocks (43) are fan-shaped.
6. A permanent magnet stepping motor according to claim 1, wherein: the inside fixed mounting of protecgulum (2) has bearing (16), the fixed pivot (15) that is provided with in center department of bearing (16), the inside of protecgulum (2) is provided with the heat dissipation fan (17) that are located pivot (15) surface, be intercommunication each other between dust screen 22, waterproof ventilated membrane (23), protecgulum (2) and casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635173.6A CN111917229B (en) | 2020-07-04 | 2020-07-04 | Permanent magnet type stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635173.6A CN111917229B (en) | 2020-07-04 | 2020-07-04 | Permanent magnet type stepping motor |
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| Publication Number | Publication Date |
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| CN111917229A true CN111917229A (en) | 2020-11-10 |
| CN111917229B CN111917229B (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010635173.6A Active CN111917229B (en) | 2020-07-04 | 2020-07-04 | Permanent magnet type stepping motor |
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| CN (1) | CN111917229B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111030405A (en) * | 2019-12-30 | 2020-04-17 | 李佩 | Synchronous and asynchronous composite motor device |
| CN112886771A (en) * | 2021-02-02 | 2021-06-01 | 宁波鼎祥电器制造有限公司 | Self-cleaning stepping motor |
| CN114094764A (en) * | 2021-12-27 | 2022-02-25 | 徐州市柯瑞斯电机制造有限公司 | Permanent magnet type synchronous motor with auxiliary heat dissipation structure |
| CN114142676A (en) * | 2021-11-18 | 2022-03-04 | 佳木斯电机股份有限公司 | Self-circulation type structure for reducing temperature of motor bearing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111030405A (en) * | 2019-12-30 | 2020-04-17 | 李佩 | Synchronous and asynchronous composite motor device |
| CN111030405B (en) * | 2019-12-30 | 2022-05-27 | 李佩 | Synchronous and asynchronous composite motor device |
| CN112886771A (en) * | 2021-02-02 | 2021-06-01 | 宁波鼎祥电器制造有限公司 | Self-cleaning stepping motor |
| CN112886771B (en) * | 2021-02-02 | 2022-03-25 | 宁波鼎祥电器制造有限公司 | Self-cleaning stepping motor |
| CN114142676A (en) * | 2021-11-18 | 2022-03-04 | 佳木斯电机股份有限公司 | Self-circulation type structure for reducing temperature of motor bearing |
| CN114094764A (en) * | 2021-12-27 | 2022-02-25 | 徐州市柯瑞斯电机制造有限公司 | Permanent magnet type synchronous motor with auxiliary heat dissipation structure |
| CN114094764B (en) * | 2021-12-27 | 2023-09-05 | 徐州市柯瑞斯电机制造有限公司 | Permanent magnet synchronous motor with auxiliary heat dissipation structure |
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| CN111917229B (en) | 2022-08-09 |
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Effective date of registration: 20220713 Address after: 215000 building 3, No. 4955, East Taihu Road, Linhu Town, Wuzhong District, Suzhou City, Jiangsu Province Applicant after: SUZHOU YONGJIE MOTOR CO.,LTD. Address before: 244000 Tongling College, 1335 Cuihu 4th Road, Tongling City, Anhui Province Applicant before: Liu Chaoyue |
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