CN215681957U - Claw-pole permanent magnet synchronous motor - Google Patents
Claw-pole permanent magnet synchronous motor Download PDFInfo
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- CN215681957U CN215681957U CN202121999185.3U CN202121999185U CN215681957U CN 215681957 U CN215681957 U CN 215681957U CN 202121999185 U CN202121999185 U CN 202121999185U CN 215681957 U CN215681957 U CN 215681957U
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Abstract
The utility model discloses a claw-pole permanent magnet synchronous motor, wherein a rotor assembly is provided with a force rotating shaft, a permanent magnet rotor and a vacant transmission mechanism, the permanent magnet rotor is movably arranged on the force rotating shaft, the vacant transmission mechanism comprises a vacant driving block fixed on the force rotating shaft and a vacant driving chamber arranged on the permanent magnet rotor, the vacant driving block is in transmission fit with the vacant driving chamber, and a vacant transmission vacancy is arranged between one side or two sides of the vacant driving block and the vacant driving chamber along the circumferential direction. The utility model has simple structure, crosses the lowest point of magnetic induction intensity of the permanent magnet synchronous motor through the idle transmission vacancy and crosses the transmission dead point, thereby solving the problem of sudden stop of the claw pole type permanent magnet synchronous motor.
Description
Technical Field
The utility model relates to the technical field of permanent magnet synchronous motors, in particular to a claw-pole permanent magnet synchronous motor.
Background
The claw-pole permanent magnet synchronous motor is simple in structure and low in cost, and mainly comprises a rotor, a stator and a stator excitation claw pole. The claw pole type permanent magnet synchronous motor magnetizes the number of rotor poles according to the requirement of rotating speed, the stator adjusts corresponding parameters according to the requirement of voltage and torque, the stator excitation claw pole is a medium for pushing the rotor to rotate, in the use process of the claw pole type permanent magnet synchronous motor, the phenomenon that the rotor is rigidly held at a relative position relative to the stator when the rotor rotates to a certain angle often occurs, the rotor is rigidly held and stopped relative to the stator, which is called as a rotor dead point, and simply, sudden stop and death often occur in the use process of the claw pole type permanent magnet synchronous motor.
The claw pole type permanent magnet synchronous motor has the advantages that the rotor comprises an output rotating shaft and permanent magnets fixed on the output rotating shaft, the eight-pole permanent magnet synchronous motor is taken as an example, the permanent magnets of the rotor are divided into eight parts along the circumferential direction, namely eight places with strongest magnetic induction intensity and eight places with lowest magnetic induction intensity are arranged on the rotor along the circumferential direction, the N poles and the S poles are places with strongest magnetic induction intensity, the middle positions of the N poles and the S poles are places with lowest magnetic induction intensity, after the claw pole type permanent magnet synchronous motor is oriented, the requirement on the magnetizing angle of the permanent magnets of the rotor is very high, and sudden motor shutdown can be caused if the magnetizing angle is not right, particularly in the loading process.
During the normal operation of the claw-pole permanent magnet synchronous motor, a plurality of conditions may cause the claw-pole permanent magnet synchronous motor to suddenly stop, for example, during the process of controlling the claw-pole permanent magnet synchronous motor to reversely rotate, for example, during the process of restarting the rotor after stopping the rotor, for example, under the condition that the torque of the rotor is insufficient during the operation of a load, if the magnetic pole of the rotor is rigidly held at the position where the magnetic induction intensity of the motor is the lowest, the motor may cause the excitation claw pole of the rotor and the excitation claw pole of the stator to be held together due to insufficient repulsion and suction, and the motor may be stopped and stopped.
In addition, when the rotor is started and the rotor is at the lowest point of magnetic induction, the starting force of the rotor is low, and sufficient attraction force or repulsion force cannot be generated to drive the rotor, thereby causing poor starting.
There is a need for improvement.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a claw-pole permanent magnet synchronous motor which is simple in structure and solves the problem of sudden stop of the claw-pole permanent magnet synchronous motor.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a claw utmost point formula PMSM, the motor housing, install stator module and rotor subassembly in the inner chamber of motor housing, the rotatory central point that installs at stator module of rotor subassembly puts, stator module includes along the stator excitation claw utmost point of circumferencial direction interval distribution in the circumference outer fringe of rotor subassembly, the rotor subassembly is provided with the pivot of exerting oneself, permanent magnet rotor and vacant drive mechanism, permanent magnet rotor movable mounting is in the pivot of exerting oneself, vacant drive mechanism is including fixing the vacant drive block of exerting oneself the pivot and setting up the vacant drive chamber at permanent magnet rotor, vacant drive block and vacant drive chamber transmission cooperation, be provided with a vacant transmission vacancy between one side or both sides and the vacant drive chamber of the vacant drive block of circumferential direction vacant drive block.
Furthermore, the vacant driving block and the vacant driving chamber are coaxially installed, the vacant driving block comprises a mounting hole formed in the center of the vacant driving block and driving blocks symmetrically arranged on two opposite sides of the mounting hole, the vacant driving chamber comprises transmission matching chambers symmetrically arranged on two opposite sides of the center of the vacant driving block, the two driving blocks of the vacant driving block are respectively arranged in the two transmission matching chambers of the vacant driving chamber, and a vacant transmission vacancy is formed between each transmission matching chamber in the circumferential direction and the corresponding driving block arranged in the cavity of the vacant driving block.
Furthermore, in the process that the vacant driving block drives the permanent magnet rotor to rotate, the side face of the driving block abuts against the inner wall face of the corresponding side of the corresponding transmission matching chamber.
Furthermore, the vacant driving block comprises an installation part and two driving blocks which are oppositely arranged on the installation part, the installation hole is formed in the center of the installation part, the output rotating shaft is fixed in the installation hole, and the transverse section of the transmission matching chamber is in a fan shape.
Furthermore, the center part of the permanent magnet rotor is provided with a shaft hole which vertically penetrates through the permanent magnet rotor, the vacant driving chamber is arranged at the bottom of the permanent magnet rotor, and the shaft hole is communicated with the vacant driving chamber; the vacant driving block is arranged in the vacant driving chamber.
Furthermore, the output rotating shaft is movably inserted in the shaft hole, an upper fixing block is fixed at the upper part of the output rotating shaft, a lower fixing block is fixed at the lower part of the output rotating shaft, the permanent magnet rotor is arranged between the upper fixing block and the lower fixing block, and the vacant driving block is fixed above the lower fixing block.
Furthermore, the position of the permanent magnet rotor at the lowest point of the magnetic induction intensity is set as a dead point position, the dead point position corresponds to the middle position of two adjacent stator excitation claw poles which are aligned in the radial direction, and the dead point position which is arranged in one transmission matching chamber along the circumferential direction and only comprises one permanent magnet rotor is arranged, so that the permanent magnet rotor can cross over the corresponding dead point position.
Furthermore, the dead point position is correspondingly located at the middle position of the transmission matching chamber along the circumferential direction, and the included angle between two inner wall surfaces of each transmission matching chamber is smaller than the included angle between two corresponding adjacent stator excitation claw poles.
Furthermore, the included angle of the transmission matching chamber along the circumferential direction is less than 360/n-a degrees, a is any number between 5 and 20, and the included angle of the vacant transmission vacant position is greater than 5 to 30 degrees.
Further, stator module includes coil skeleton and winding group, and the through-hole has been seted up at coil skeleton's middle part, and coil skeleton's circumference side is provided with the winding groove, and the winding group sets up in the winding groove, permanent magnet rotor is arranged in the through-hole.
Compared with the prior art, the utility model has the advantages that: the utility model has simple structure and solves the problem of sudden stop of the claw-pole permanent magnet synchronous motor.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the rotor assembly of the present invention.
Fig. 3 is a schematic structural diagram of the idle driving chamber and the idle driving block abutting against each other to realize transmission matching.
The labels in the figure are:
1 motor shell 11 stator excitation claw pole
2 coil framework 21 winding group 22 winding slot 23 through hole
3 rotor assembly 31 output rotating shaft 32 permanent magnet rotor 33 idle driving block 34 idle driving chamber 35 idle driving room 36 driving block 37 inner wall surface 38 upper fixed block 39 lower fixed block
Detailed Description
The utility model provides a claw utmost point formula permanent magnet synchronous machine, as shown in fig. 1 to 3, motor housing 1, install stator module and rotor subassembly 3 in motor housing 1's inner chamber, rotor subassembly 3 is rotatory to be installed at stator module's central point and is put, stator module includes along the stator excitation claw utmost point 11 of circumferencial direction interval distribution at rotor subassembly 3's circumference outer fringe, form a plurality of stator excitation claw utmost points 11 through the panel punching press of punching press technology from motor housing 1's bottom and bend, motor housing 1's face lid or well intermediate spacer also can be through punching press technology integrated into one piece a plurality of stator excitation claw utmost point 11, stator module includes coil skeleton 2 and winding group 21, through-hole 23 has been seted up at coil skeleton 2's middle part, coil skeleton 2's circumference side is provided with winding groove 22, winding group 21 sets up in winding groove 22, permanent magnet rotor 32 is located through-hole 23.
The rotor assembly 3 is provided with a force output rotating shaft 31, a permanent magnet rotor 32 and a vacant transmission mechanism, the permanent magnet rotor 32 is movably arranged on the force output rotating shaft 31, the vacant transmission mechanism comprises a vacant driving block 33 fixed on the force output rotating shaft 31 and a vacant driving chamber 34 arranged on the permanent magnet rotor 32, the vacant driving block 33 is in transmission fit with the vacant driving chamber 34, and a vacant transmission vacancy 35 is arranged between one side or two sides of the vacant driving block 33 in the circumferential direction and the vacant driving chamber 34. When the permanent magnet synchronous motor is electrified and started, the stator excitation claw poles 11 generate a driving magnetic field and drive the permanent magnet rotor 32 to rotate, the load of the permanent magnet synchronous motor and the resistance of the output rotating shaft 31 do not act on the permanent magnet rotor 32 before the idle driving chamber 34 contacts the idle driving block 33, namely, the permanent magnet rotor 32 has an idle running state during starting, the inner wall surface 37 of the idle driving chamber 34 impacts against the idle driving block 33 and pushes the idle driving block 33 to drive the idle driving block to rotate, the output rotating shaft 31 is driven to rotate through the idle driving block 33, and then starting work is completed.
The vacant driving block 33 and the vacant driving chamber 34 are coaxially installed, the vacant driving block 33 comprises a mounting hole arranged at the center position thereof and driving blocks 36 symmetrically arranged at the two opposite sides of the mounting hole, the vacant driving chamber 34 comprises transmission matching chambers symmetrically arranged at the two opposite sides of the center position thereof, the two driving blocks 36 of the vacant driving block 33 are respectively arranged in the two transmission matching chambers of the vacant driving chamber 34, and a vacant transmission vacancy 35 is arranged between each transmission matching chamber and the corresponding driving block 36 arranged in the cavity thereof along the circumferential direction. The side surface of the driving block 36 is pressed against the inner wall surface 37 of the corresponding side of the corresponding transmission matching chamber in the process that the empty driving block 33 drives the permanent magnet rotor 32 to rotate.
Specifically, the vacant driving block 33 includes a mounting portion and two driving blocks 36 which are oppositely disposed on the mounting portion, a mounting hole is formed in the center of the mounting portion, the output rotating shaft 31 is fixed in the mounting hole, and the transverse section of the transmission matching chamber is fan-shaped. The center of the permanent magnet rotor 32 is provided with a shaft hole which vertically penetrates through the permanent magnet rotor 32, the vacant driving chamber 34 is arranged at the bottom of the permanent magnet rotor 32, and the shaft hole is communicated with the vacant driving chamber 34; the idle driving block 33 is disposed in the idle driving chamber 34. The output rotating shaft 31 is movably inserted into the shaft hole, an upper fixing block 38 is fixed at the upper part of the output rotating shaft 31, a lower fixing block 39 is fixed at the lower part of the output rotating shaft 31, the permanent magnet rotor 32 is arranged between the upper fixing block 38 and the lower fixing block 39, and the idle driving block 33 is fixed above the lower fixing block 39.
The position of the permanent magnet rotor 32 at the lowest point of the magnetic induction intensity is set as a dead point position corresponding to the middle position of the stator excitation claw poles 11 which are radially aligned and adjacently arranged, and the dead point position of only one permanent magnet rotor 32 is arranged in one transmission matching chamber along the circumferential direction, so that the permanent magnet rotor 32 can cross the corresponding dead point position. The dead point position along the circumferential direction is correspondingly positioned at the middle position of the transmission matching chamber, and the included angle between the two inner wall surfaces 37 of each transmission matching chamber is smaller than the included angle of the corresponding two adjacent stator excitation claw poles 11. The included angle of the transmission matching chamber along the circumferential direction is less than 360/n-a degrees, a is any number between 5 and 20, and the included angle of the idle transmission vacancy 35 is more than 5 to 30 degrees.
The utility model solves the dead point sudden stop of the permanent magnet rotor 32 caused by the lowest point of the magnetic induction intensity, when the permanent magnet rotor 32 is started, the permanent magnet of the permanent magnet rotor 32 can not be loaded by the motor at the first time, the starting position of the angle space of 5-30 degrees is provided by the idle transmission vacancy 35, the angle space of the idle transmission vacancy 35 covers the lowest point of the magnetic induction intensity, and the phenomenon that the motor can not be started can not occur.
Taking an eight-pole permanent magnet synchronous motor with eight magnetic poles as an example, the clamping degree of the idle transmission vacancy 35 is set to be 30 degrees, the 30-degree idle transmission vacancy 35 already crosses the lowest point of the magnetic induction intensity of the eight-pole permanent magnet synchronous motor, when the eight-pole permanent magnet synchronous motor is started, the output rotating shaft 31 is driven to rotate between the idle driving block 33 which can rotate for 30 degrees at most, namely the permanent magnet rotor 32 has a no-load angle of 30 degrees, the load of the output rotating shaft 31 is not loaded on the permanent magnet rotor 32 before the output rotating shaft 31 is driven to rotate, and the motor can be started smoothly each time.
The utility model provides instant starting torque for the claw-pole permanent magnet synchronous motor, and because the permanent magnet rotor 32 rotates by an angle to drive the output rotating shaft 31 to rotate when the claw-pole permanent magnet synchronous motor is started, the permanent magnet rotor 32 is not influenced by load at the first time, a process that the transmission matching chamber instantaneously impacts the vacant driving block 33 exists when the claw-pole permanent magnet synchronous motor is started, and the instant starting torque is larger than that of the permanent magnet synchronous motor with the old structure.
In the long-time locked-rotor process of the permanent magnet synchronous motor, the permanent magnet rotor 32 may rotate to the position of the lowest point of the magnetic induction intensity and be halted and stopped in an uncertain certain time due to the gap of the gear, because the permanent magnet synchronous motor with the new structure of the utility model can enable the permanent magnet rotor 32 to be in operation all the time, the activity of the permanent magnet rotor 32 is kept, the permanent magnet rotor 32 is enabled to be in the position with the best magnetic induction intensity all the time through back and forth rotation, and further the condition that the permanent magnet rotor 32 is held with the stator excitation claw pole 11 due to the insufficient repulsion and suction of the permanent magnet rotor 32 is avoided, namely the sudden halt and stop of the permanent magnet synchronous motor are avoided.
The utility model can not cause sudden stop and dead halt in the process of controlling the reverse rotation of the claw pole type permanent magnet synchronous motor, or in the process of restarting the rotor after stopping, or under the condition of insufficient rotor torque during the operation of a load.
Claims (10)
1. The utility model provides a claw utmost point formula PMSM, motor housing (1), install stator module and rotor subassembly (3) in the inner chamber of motor housing (1), rotor subassembly (3) are rotatory to be installed at stator module's central point and are put, and stator module includes along the stator excitation claw utmost point (11) of circumferencial direction interval distribution in the circumference outer fringe of rotor subassembly (3), its characterized in that: rotor subassembly (3) are provided with output pivot (31), permanent magnet rotor (32) and vacant drive mechanism, permanent magnet rotor (32) movable mounting is in output pivot (31), vacant drive mechanism is including fixing vacant drive block (33) of output pivot (31) and setting up vacant drive chamber (34) at permanent magnet rotor (32), vacant drive block (33) and vacant drive chamber (34) transmission fit, be provided with a vacant transmission vacancy (35) between one side or both sides and vacant drive chamber (34) of vacant drive block (33) along the circumferencial direction.
2. The claw-pole permanent magnet synchronous motor according to claim 1, wherein: the hollow driving block (33) and the hollow driving chamber (34) are coaxially mounted, the hollow driving block (33) comprises a mounting hole formed in the center of the hollow driving block and driving blocks (36) symmetrically arranged on two opposite sides of the mounting hole, the hollow driving chamber (34) comprises transmission matching chambers symmetrically arranged on two opposite sides of the center of the hollow driving block, the two driving blocks (36) of the hollow driving block (33) are respectively arranged in the two transmission matching chambers of the hollow driving chamber (34), and a hollow transmission vacancy (35) is formed between each transmission matching chamber in the circumferential direction and the corresponding driving block (36) arranged in the cavity of the hollow driving block.
3. The claw-pole permanent magnet synchronous motor according to claim 2, wherein: and in the process that the vacant driving block (33) drives the permanent magnet rotor (32) to rotate, the side surface of the driving block (36) is abutted against the inner wall surface (37) of the corresponding side of the corresponding transmission matching chamber.
4. The claw-pole permanent magnet synchronous motor according to claim 2, wherein: the vacant driving block (33) comprises an installation part and two driving blocks (36) which are oppositely arranged and comprise the installation part, the installation hole is formed in the center of the installation part, the output rotating shaft (31) is fixed in the installation hole, and the transverse section of the transmission matching chamber is in a fan shape.
5. The claw-pole permanent magnet synchronous motor according to claim 2, wherein: the center of the permanent magnet rotor (32) is provided with a shaft hole which vertically penetrates through the permanent magnet rotor (32), the vacant driving chamber (34) is arranged at the bottom of the permanent magnet rotor (32), and the shaft hole is communicated with the vacant driving chamber (34); the idle driving block (33) is arranged in the idle driving chamber (34).
6. The claw-pole permanent magnet synchronous motor according to claim 5, wherein: the power output rotating shaft (31) is movably inserted in the shaft hole, an upper fixing block (38) is fixed to the upper portion of the power output rotating shaft (31), a lower fixing block (39) is fixed to the lower portion of the power output rotating shaft (31), the permanent magnet rotor (32) is arranged between the upper fixing block (38) and the lower fixing block (39), and the vacant driving block (33) is fixed above the lower fixing block (39).
7. The claw-pole permanent magnet synchronous motor according to any one of claims 2 to 6, characterized in that: the position of the permanent magnet rotor (32) at the lowest point of magnetic induction intensity is set as a dead point position, the dead point position corresponds to the middle position of two adjacent stator excitation claw poles (11) which are aligned in the radial direction, and the dead point position which is arranged in one transmission matching chamber along the circumferential direction and only comprises one permanent magnet rotor (32) is used for enabling the permanent magnet rotor (32) to cross the corresponding dead point position.
8. The claw-pole permanent magnet synchronous motor according to claim 7, wherein: the dead point position is correspondingly positioned at the middle position of the transmission matching chamber along the circumferential direction, and the included angle between two inner wall surfaces (37) of each transmission matching chamber is smaller than the included angle of the corresponding two adjacent stator excitation claw poles (11).
9. The claw-pole permanent magnet synchronous motor according to claim 7, wherein: the included angle of the transmission matching chamber along the circumferential direction is less than 360/n-a degrees, a is any number between 5 and 20, and the included angle of the idle transmission vacant position (35) is more than 5 to 30 degrees.
10. The claw-pole permanent magnet synchronous motor according to claim 7, wherein: stator module includes coil skeleton (2) and wire winding group (21), and through-hole (23) have been seted up at the middle part of coil skeleton (2), and the circumference side of coil skeleton (2) is provided with wire winding groove (22), and wire winding group (21) set up in wire winding groove (22), permanent magnet rotor (32) are arranged in through-hole (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121999185.3U CN215681957U (en) | 2021-08-24 | 2021-08-24 | Claw-pole permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121999185.3U CN215681957U (en) | 2021-08-24 | 2021-08-24 | Claw-pole permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215681957U true CN215681957U (en) | 2022-01-28 |
Family
ID=79955506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121999185.3U Active CN215681957U (en) | 2021-08-24 | 2021-08-24 | Claw-pole permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215681957U (en) |
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2021
- 2021-08-24 CN CN202121999185.3U patent/CN215681957U/en active Active
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