CN203691090U - Ultrathin low-cogging-torque permanent magnet brushless servo motor suitable for elevator door motor - Google Patents
Ultrathin low-cogging-torque permanent magnet brushless servo motor suitable for elevator door motor Download PDFInfo
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- CN203691090U CN203691090U CN201320825954.7U CN201320825954U CN203691090U CN 203691090 U CN203691090 U CN 203691090U CN 201320825954 U CN201320825954 U CN 201320825954U CN 203691090 U CN203691090 U CN 203691090U
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Abstract
The utility model belongs to the technical field of door motor and especially relates to an ultrathin low-cogging-torque permanent magnet brushless servo motor suitable for an elevator door motor. The ultrathin low-cogging-torque permanent magnet brushless servo motor solves the technical problem of high cogging torque in the prior art, and comprises a motor housing and a stator fixedly arranged in the motor housing. The motor housing is provided with a motor shaft inserted in the stator, and a rotor is fixedly arranged on the motor shaft. The rotor comprises an annular skeleton formed by rotor sheets superposed on one another. A plurality of magnetic tiles in circumferential distribution are arranged on the side portion of the annular skeleton, and the arc girth of at least one magnetic tile is different from that of the other magnetic tiles. A magnetic steel installation base made of magnetic conductive material is arranged at one of the motor shaft extending outside of the motor housing, and magnetic steel is installed on the magnetic steel installation base. An encoder control circuit board is arranged on the motor housing, and a gap is arranged between a magnetic steel installation base and the encoder control circuit board. Compared with the prior art, the ultrathin low-cogging-torque permanent magnet brushless servo motor is small in axial size and low in cogging torque.
Description
Technical field
The utility model belongs to technical field of motors, especially relates to a kind of ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor.
Background technology
Elevator door-motor motor is mounted in the transmission device that the control elevator door on elevator door leaves and closes.Itself does not control function some motor, need to realize its running by frequency converter and encoder.The motor of three kinds of forms of ubiquity on market now, permanent-magnet synchronous elevator door machine, interchange door machine and direct-flow gate machine.At present elevator door-motor generally adopts Induction Motor Drive, and the control characteristic of motor is poor, while driving elevator door, exist open the door, close gate control unsmooth, start and stop the shortcomings such as the slow and polarization of speed is poor.The developing direction that door machine drives is to adopt permagnetic synchronous motor, this motor is servo drive motor, have advantages of that control characteristic is good, starting torque is large, drive and can make elevator door switch flexible for elevator door-motor, rapidly steadily, accurate positioning, be the available detection obstacle of closing the door by electric current, can make the quality of a machine have the variation of matter.
But, existing elevator door-motor servo drive motor includes but not limited to following shortcoming: 1, the volume of motor is also larger, particularly axial dimension is larger, cause the weight of whole door mechanism system heavier, inconvenience when dismounting and maintenance, and the weight and the operating power that has strengthened traction machine that have virtually increased the weight of elevator, drive cost to be in and not fall all the time.In addition, because volume is large, serious waste installing space, cause being difficult to rational deployment, structure is compact not.2, its cogging torque of existing magneto is larger, and cogging torque produces the problems such as vibration, noise and increasing control precision compared with conference.The problem existing in order to solve prior art, people have carried out long-term exploration, have proposed solution miscellaneous.For example, Chinese patent literature discloses a kind of permanent magnet synchronous motor for machine [application number: 201120306890.0], and this device comprises two forward and backward end caps that are coupled to form, and is placed in motor stator, the p-m rotor of end cap inside; The interior axle head of described p-m rotor is provided with an induced magnet; Just right rear end cap position, described and induced magnet position is provided with a magnetic induction encoder.Described end cap is screwed and is formed by front end housing and rear end cap.The axially outer end of described p-m rotor is mounted with synchronous pulley.In addition, the inventor who also has has designed such structure: set up non-magnetic mount pad in motor shaft end, but the mount pad of this scheme is to set up in addition in the length of original motor axle, the problem of field weakening after this scheme can prevent from switching on;
Although above-mentioned technical scheme has been improved the partial technical problems of existing door machine permanent magnet motor to a certain extent, but still cannot fundamentally solve the problems of the technologies described above, (axial dimension is larger, be difficult to realize the thin type design of motor), in addition, its cogging torque of the motor of such scheme is higher, cannot meet job requirements.
Utility model content
The purpose of this utility model is for the problems referred to above, and a kind of ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor that can reduce motor axial dimension and can significantly weaken cogging torque is provided.
For achieving the above object, the utility model has adopted following technical proposal: the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is originally applicable to elevator door-motor comprises motor housing and is fixedly installed on the stator in motor housing, on motor housing, be provided with and be located in stator and one end extends to the motor shaft outside motor housing, on described motor shaft, be installed with the rotor between motor shaft and stator, this rotor comprises the ring skeleton being formed by stacking by some rotor sheets, be provided with the magnetic shoe of some circle distribution and the arc girth of at least one magnetic shoe is different from the arc girth of remaining magnetic shoe at the sidepiece of ring skeleton, described magnetic shoe surrounds formation annular solid, one end outside motor shaft extends to motor housing is provided with the magnet steel mount pad of being made up of non-magnet_conductible material, on magnet steel mount pad, be provided with magnet steel, on motor housing, be provided with encoder control circuit board, described magnet steel mount pad is fixed on motor shaft and between this magnet steel mount pad and encoder control circuit board and is left gap by connected structure.This non-magnet_conductible material comprises any one in aluminium, copper and plastics.
The arc girth of at least one magnetic shoe of the application different from the arc girth of remaining magnetic shoe from magnetic shoe inhomogeneous this structure can significantly reduce the pulsation of cogging torque and the motor electromagnetic of motor, guarantee the application's practicality, in addition, connected structure can significantly reduce the application's axial dimension, in the motor that is applicable to comprise elevator door-motor, it can significantly reduce the installing space of motor, meets the development trend of current elevator door-motor ultrathin.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described magnetic shoe quantity is 8, the mechanical angle of a magnetic shoe in these 8 magnetic shoes is 60 °, the mechanical angle of all the other 7 magnetic shoes equates and the mechanical angle of each magnetic shoe is 300 °/7, and described magnetic shoe is connected by interface arrangment and ring skeleton respectively.Interface arrangment can guarantee the bonding strength between magnet steel and ring skeleton, the stability while guaranteeing operation.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described interface arrangment comprises the draw-in groove that is arranged on ring skeleton sidepiece, on each magnetic shoe, be respectively equipped with the convex body that can be stuck in described draw-in groove, described convex body is fixedly arranged in described draw-in groove.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described connected structure comprises the annular groove that is arranged on the axial one end of motor shaft, and one end of magnet steel mount pad inserts in described annular groove and the other end extends to outside axial one end of motor shaft.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described magnet steel mount pad comprises the second column that inserts in the first column in described annular groove and be arranged on first column one end, the external diameter of the second described column is greater than the external diameter of the first column and forms annular blocking surface between the second column and the first column, the first described column and the second column be connected as a single entity formula and in the time that the first column inserts in annular groove described in annular blocking surface abut on the end face of motor shaft.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, the second described column is provided with magnet steel holddown groove away from one end of the first column, and described magnet steel is fixed in magnet steel holddown groove and the outer face of magnet steel flushes with the outer face of magnet steel holddown groove.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described stator inner side has some coiling pin to the extension of stator axial line and even circumferential distribution, and between two adjacent coiling pin, form winding slot, be respectively equipped with cell body at each coiling pin away from one end of stator.Cell body can further reduce the application's cogging torque, guarantees practicality.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described ring skeleton is provided with the through hole that some with described draw-in groove is communicated with one by one, and this draw-in groove bore is less than the internal diameter of through hole; On described ring skeleton, be also provided with the protective sleeve that is set in annular solid two ends.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described motor housing comprises housing, the sealing of housing one end, the other end is uncovered, be provided with annular end cap at housing opening end, described encoder control circuit plate portion inserts in the center of annular end cap and the edge of encoder control circuit board is fixed on annular end cap, on annular end cap, be also provided with and be positioned at described encoder control circuit board outside and the cover plate that this encoder control circuit board can be covered, between cover plate and annular end cap, be provided with silicagel pad.
In the above-mentioned ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor, described housing is provided with the anti-device of hindering that passes and can prevent this wiring damage for the wiring being connected with encoder control circuit board, the described anti-device of hindering comprises the rubber-insulated wire guard shield being fixed on housing, between rubber-insulated wire guard shield and housing, be provided with rubber blanket, a side at rubber-insulated wire guard shield has breach, on rubber-insulated wire guard shield, be provided with to be fixed on and protect line plate on breach, on line plate, offer some line holes of protecting protecting.
Compared with prior art, the advantage that is originally applicable to the ultra-thin Low gullet torque permanent magnetic brushless servomotor of elevator door-motor is: 1, design is more reasonable, and axial dimension is less, has greatly dwindled the axial length and the machine volume that has dwindled motor of motor; 2, magnetic field is difficult for being weakened, and guarantees the practicality of motor; 3, production efficiency is high; 4, Low gullet torque, service efficiency and the practicality of assurance motor.
Accompanying drawing explanation
Fig. 1 is the blast structural representation that the utility model provides.
Fig. 2 is the rotor structure schematic diagram that the utility model provides.
Fig. 3 is along A-A line sectional structure schematic diagram in Fig. 2.
Fig. 4 is the structural representation that in Fig. 3, amplify at B place.
Fig. 5 is the connected structure schematic diagram that the utility model provides.
Fig. 6 is the stator structure schematic diagram that the utility model provides.
Fig. 7 is structural representation after the partial assembled that provides of the utility model.
In figure, motor housing 1, encoder control circuit board 1a, housing 11, annular end cap 12, cover plate 13, silicagel pad 14, stator 2, coiling pin 21, winding slot 22, cell body 23, motor shaft 3, annular groove 31, ultra-thin bearing 32, rotor 4, rotor sheet 41, ring skeleton 42, draw-in groove 42a, magnetic shoe 43, convex body 43a, through hole 44, protective sleeve 45, magnet steel mount pad 5, magnet steel 5a, the first column 51, the second column 52, magnet steel holddown groove 52a, annular blocking surface 53, the anti-device 6 of hindering, rubber-insulated wire guard shield 61, rubber blanket 62, breach 63, protect line plate 64, protect line hole 64a.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in Fig. 1-7, originally the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor comprises motor housing 1 and is fixedly installed on the stator 2 in motor housing 1, on motor housing 1, be provided with and be located in stator 2 and one end extends to the motor shaft 3 outside motor housing 1, this motor shaft 3 is fixed on motor housing 1 by two ultra-thin bearings 32, on described motor shaft 3, be installed with the rotor 4 between motor shaft 3 and stator 2, prioritization scheme, the rotor 4 of the present embodiment comprises the ring skeleton 42 being formed by stacking by some rotor sheets 41, be provided with the magnetic shoe 43 of some circle distribution and the arc girth of at least one magnetic shoe 43 is different from the arc girth of remaining magnetic shoe 43 at the sidepiece of ring skeleton 42, described magnetic shoe 43 surrounds formation annular solid, one end outside motor shaft 3 extends to motor housing 1 is provided with the magnet steel mount pad 5 of being made up of non-magnet_conductible material, this non-magnet_conductible material comprises aluminium, any one in copper and plastics, on magnet steel mount pad 5, be provided with magnet steel 5a, on motor housing 1, be provided with encoder control circuit board 1a, described magnet steel mount pad 5 be fixed on motor shaft 3 by connected structure and this magnet steel mount pad 5 and encoder control circuit board 1a between leave gap.
In the present embodiment, the arc girth of at least one magnetic shoe 43 of the present embodiment and the machine arc girth of remaining magnetic shoe 43 and inhomogeneous this structure of magnetic shoe 43 can significantly reduce the pulsation of cogging torque and the motor electromagnetic of motor, guarantee the practicality of the present embodiment, in addition, connected structure can significantly reduce the application's axial dimension, in the motor that is applicable to comprise elevator door-motor, it can significantly reduce the installing space of motor, more closes the development trend that meets current elevator door-motor ultrathin.
As the optimization scheme of the present embodiment, magnetic shoe 43 quantity of the present embodiment are 8, the mechanical angle of a magnetic shoe 43 in these 8 magnetic shoes 43 is 60 °, the mechanical angle of all the other 7 magnetic shoes 43 equates and the mechanical angle of each magnetic shoe 43 is 300 °/7, and described magnetic shoe 43 is connected by interface arrangment and ring skeleton 42 respectively.Further, the interface arrangment here comprises the draw-in groove 42a that is arranged on ring skeleton 42 sidepieces, is respectively equipped with the convex body 43a that can be stuck in described draw-in groove 42a on each magnetic shoe 43, and described convex body 43a is fixedly arranged in described draw-in groove 42a.On ring skeleton 42, be provided with the through hole 44 that some with described draw-in groove 42a is communicated with one by one, and this draw-in groove 42a bore is less than the internal diameter of through hole 44; On described ring skeleton 42, be also provided with the protective sleeve 45 that is set in annular solid two ends.
Connected structure comprises the annular groove 31 that is arranged on motor shaft 3 axial one end, and one end of magnet steel mount pad 5 inserts in described annular groove 31 and the other end extends to outside axial one end of motor shaft 3.This structure has been dwindled the axial dimension of motor virtually, is more applicable for the ultrathin design requirement of elevator door motor.
Particularly, the magnet steel mount pad 5 of the present embodiment comprises the second column 52 that inserts in the first column 51 in described annular groove 31 and be arranged on first column 51 one end, the external diameter of the second described column 52 is greater than the external diameter of the first column 51 and forms annular blocking surface 53 between the second column 52 and the first column 51, be connected as a single entity formula and abutting on the end face of motor shaft 3 when the first column 51 inserts in the annular blocking surface 53 of annular groove 31 described in when interior of the first described column 51 and the second column 52.Be provided with magnet steel holddown groove 52a at the second column 52 away from one end of the first column 51, described magnet steel 5a is fixed in magnet steel holddown groove 52a and the outer face of magnet steel 5a flushes with the outer face of magnet steel holddown groove 52a.
There are some coiling pin 21 to stator 2 axial lines extensions and even circumferential distribution in stator 2 inner sides of the present embodiment, and form winding slot 22 between two adjacent coiling pin 21, be respectively equipped with cell body 23 at each coiling pin 21 away from one end of stator 2.This cell body 23 can further reduce the application's cogging torque.
Secondly, motor housing 1 comprises housing 11, housing 11 one end sealings, the other end is uncovered, be provided with annular end cap 12 at housing 11 opening ends, the edge that described encoder control circuit board 1a part inserts in annular end cap 12 center and encoder control circuit board 1a is fixed on annular end cap 12, on annular end cap 12, be also provided with and be positioned at described encoder control circuit board 1a outside and the cover plate 13 that this encoder control circuit board 1a can be covered, between cover plate 13 and annular end cap 12, be provided with silicagel pad 14.
On housing 11, be provided with the anti-device 6 of hindering that passes and can prevent this wiring damage for the wiring being connected with encoder control circuit board 1a, the described anti-device 6 of hindering comprises the rubber-insulated wire guard shield 61 being fixed on housing 11, between rubber-insulated wire guard shield 61 and housing 11, be provided with rubber blanket 62, a side at rubber-insulated wire guard shield 61 has breach 63, on rubber-insulated wire guard shield 61, be provided with to be fixed on and protect line plate 64 on breach 63, on line plate 64, offer some line hole 64a that protect protecting.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used motor housing 1 herein, encoder control circuit board 1a, housing 11, annular end cap 12, cover plate 13, silicagel pad 14, stator 2, coiling pin 21, winding slot 22, cell body 23, motor shaft 3, annular groove 31, ultra-thin bearing 32, rotor 4, rotor sheet 41, ring skeleton 42, draw-in groove 42a, magnetic shoe 43, convex body 43a, through hole 44, protective sleeve 45, magnet steel mount pad 5, magnet steel 5a, the first column 51, the second column 52, magnet steel holddown groove 52a, annular blocking surface 53, the anti-device 6 of hindering, rubber-insulated wire guard shield 61, rubber blanket 62, breach 63, protect line plate 64, protect the terms such as line hole 64a, but do not get rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (10)
1. one kind is applicable to the ultra-thin Low gullet torque permanent magnetic brushless servomotor of elevator door-motor, comprise motor housing (1) and be fixedly installed on the stator (2) in motor housing (1), on motor housing (1), be provided with and be located in stator (2) and one end extends to the motor shaft (3) outside motor housing (1), on described motor shaft (3), be installed with the rotor (4) being positioned between motor shaft (3) and stator (2), it is characterized in that, described rotor (4) comprises the ring skeleton (42) being formed by stacking by some rotor sheets (41), be provided with the magnetic shoe (43) of some circle distribution and the arc girth of at least one magnetic shoe (43) is different from the arc girth of remaining magnetic shoe (43) at the sidepiece of ring skeleton (42), described magnetic shoe (43) surrounds formation annular solid, one end outside motor shaft (3) extends to motor housing (1) is provided with the magnet steel mount pad (5) of being made up of non-magnet_conductible material, on magnet steel mount pad (5), be provided with magnet steel (5a), on motor housing (1), be provided with encoder control circuit board (1a), described magnet steel mount pad (5) is fixed on motor shaft (3) by connected structure and above and between this magnet steel mount pad (5) and encoder control circuit board (1a) leaves gap.
2. the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor according to claim 1, it is characterized in that, described magnetic shoe (43) quantity is 8, the mechanical angle of the magnetic shoe (43) in these 8 magnetic shoes (43) is 60 °, the mechanical angle of all the other 7 magnetic shoes (43) equates and the mechanical angle of each magnetic shoe (43) is 300 °/7, and described magnetic shoe (43) is connected by interface arrangment and ring skeleton (42) respectively.
3. the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor according to claim 2, it is characterized in that, described interface arrangment comprises the draw-in groove (42a) that is arranged on ring skeleton (42) sidepiece, on each magnetic shoe (43), be respectively equipped with the convex body (43a) that can be stuck in described draw-in groove (42a), described convex body (43a) is fixedly arranged in described draw-in groove (42a).
4. according to the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor described in claim 1 or 2 or 3, it is characterized in that, described connected structure comprises the annular groove (31) that is arranged on the axial one end of motor shaft (3), and one end of magnet steel mount pad (5) inserts in described annular groove (31) and the other end extends to outside axial one end of motor shaft (3).
5. the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor according to claim 4, it is characterized in that, described magnet steel mount pad (5) comprises the second column (52) that inserts in the first column (51) in described annular groove (31) and be arranged on the first column (51) one end, the external diameter of described the second column (52) is greater than the external diameter of the first column (51) and forms annular blocking surface (53) between the second column (52) and the first column (51), described the first column (51) and the second column (52) be connected as a single entity formula and in the first column (51) inserts in annular groove (31) time described in annular blocking surface (53) abut on the end face of motor shaft (3).
6. the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor according to claim 5, it is characterized in that, described the second column (52) is provided with magnet steel holddown groove (52a) away from one end of the first column (51), and described magnet steel (5a) is fixed in magnet steel holddown groove (52a) and the outer face of magnet steel (5a) flushes with the outer face of magnet steel holddown groove (52a).
7. according to the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor described in claim 1 or 2 or 3, it is characterized in that, described stator (2) inner side has some coiling pin (21) to the extension of stator (2) axial line and even circumferential distribution, and between adjacent two coiling pin (21), form winding slot (22), be respectively equipped with cell body (23) at each coiling pin (21) away from one end of stator (2).
8. the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor according to claim 3, it is characterized in that, described ring skeleton (42) is provided with the through hole (44) that some with described draw-in groove (42a) is communicated with one by one, and this draw-in groove (42a) bore is less than the internal diameter of through hole (44); On described ring skeleton (42), be also provided with the protective sleeve (45) that is set in annular solid two ends.
9. according to the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor described in claim 1 or 2 or 3, it is characterized in that, described motor housing (1) comprises housing (11), the sealing of housing (11) one end, the other end is uncovered, be provided with annular end cap (12) at housing (11) opening end, described encoder control circuit board (1a) part inserts in the center of annular end cap (12) and the edge of encoder control circuit board (1a) is fixed on annular end cap (12), on annular end cap (12), be also provided with and be positioned at described encoder control circuit board (1a) outside and the cover plate (13) that this encoder control circuit board (1a) can be covered, between cover plate (13) and annular end cap (12), be provided with silicagel pad (14).
10. the ultra-thin Low gullet torque permanent magnetic brushless servomotor that is applicable to elevator door-motor according to claim 9, it is characterized in that, described housing (11) is provided with the anti-device (6) of hindering that passes and can prevent this wiring damage for the wiring being connected with encoder control circuit board (1a), the described anti-device (6) of hindering comprises the rubber-insulated wire guard shield (61) being fixed on housing (11), between rubber-insulated wire guard shield (61) and housing (11), be provided with rubber blanket (62), have breach (63) in a side of rubber-insulated wire guard shield (61), on rubber-insulated wire guard shield (61), be provided with to be fixed on and protect line plate (64) on breach (63), on line plate (64), offer some line holes (64a) of protecting protecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825954.7U CN203691090U (en) | 2013-12-13 | 2013-12-13 | Ultrathin low-cogging-torque permanent magnet brushless servo motor suitable for elevator door motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825954.7U CN203691090U (en) | 2013-12-13 | 2013-12-13 | Ultrathin low-cogging-torque permanent magnet brushless servo motor suitable for elevator door motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203691090U true CN203691090U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320825954.7U Expired - Lifetime CN203691090U (en) | 2013-12-13 | 2013-12-13 | Ultrathin low-cogging-torque permanent magnet brushless servo motor suitable for elevator door motor |
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| Country | Link |
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| CN (1) | CN203691090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786531A (en) * | 2020-07-13 | 2020-10-16 | 王浩然 | Stepping motor coil |
| CN117411248A (en) * | 2023-10-10 | 2024-01-16 | 山西省机电设计研究院有限公司 | Ultra-high precision servo motor and electrical equipment |
-
2013
- 2013-12-13 CN CN201320825954.7U patent/CN203691090U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786531A (en) * | 2020-07-13 | 2020-10-16 | 王浩然 | Stepping motor coil |
| CN117411248A (en) * | 2023-10-10 | 2024-01-16 | 山西省机电设计研究院有限公司 | Ultra-high precision servo motor and electrical equipment |
| CN117411248B (en) * | 2023-10-10 | 2024-06-07 | 山西省机电设计研究院有限公司 | Ultra-high precision servo motor and electrical equipment |
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