Search

CN-122001117-A - Motor

CN122001117ACN 122001117 ACN122001117 ACN 122001117ACN-122001117-A

Abstract

The application relates to the field of industrial equipment, in particular to a motor, which comprises a casing and a rotor rotatably connected in an inner cavity of the casing, wherein the rotor comprises a yoke part and a plurality of tooth parts, the tooth parts are uniformly connected on the peripheral surface of the yoke part at intervals around the axis of the yoke part, tooth grooves for winding coils are reserved between adjacent tooth parts, and the planes of the adjacent two tooth parts facing the tooth grooves are parallel to each other. According to the application, the yoke part and the tooth part are arranged, the planes are parallel to each other, so that the radial force waves are distributed more symmetrically in the circumferential direction, partial force waves cancel each other, the excitation action on the stator core is reduced, the interaction force between the rotor teeth and the stator slots is reduced, the cogging torque is reduced, the vibration and noise of the motor are reduced, and the normal use of the motor by a user is ensured.

Inventors

  • AI CHAOJUN
  • WU LINGHUA

Assignees

  • 浙江方远四福机电有限公司

Dates

Publication Date
20260508
Application Date
20260207

Claims (10)

  1. 1. The motor is characterized by comprising a machine shell (1) and a rotor (2) rotatably connected to the inner cavity of the machine shell (1), wherein the rotor (2) comprises a yoke (21) and a plurality of tooth parts (23), the tooth parts (23) are uniformly connected to the outer peripheral surface of the yoke (21) at intervals around the axis of the yoke (21), tooth grooves (231) for winding coils are reserved between adjacent tooth parts (23), and the planes of the adjacent two tooth parts (23) facing the tooth grooves (231) are parallel to each other.
  2. 2. An electric motor according to claim 1, wherein the rotor (2) further comprises a plurality of guide blocks (22), the guide blocks (22) are in one-to-one correspondence with the tooth grooves (231), and the guide blocks (22) are connected to the surface of the yoke (21) facing the tooth grooves (231).
  3. 3. An electric motor according to claim 2, characterized in that the end faces of the guide blocks (22) facing the teeth (23) are each provided with a guide surface (221), the inclined height of the guide surfaces (221) increasing with decreasing distance to the yoke (21).
  4. 4. The motor of claim 1, wherein the casing (1) comprises a machine base (11) and at least two end covers (12), a plurality of fixing holes (121) for the screw ends to penetrate are formed in the surface of the end covers (12) at intervals, a plurality of threaded holes (111) for the screw ends to screw down are formed in the two ends of the machine base (11) in the axial direction at intervals, at least two end covers (12) are in one-to-one correspondence with the two ends of the machine base (11) in the axial direction, the threaded holes (111) are in one-to-one correspondence and communicated with the fixing holes (121), and the screw ends penetrate through the fixing holes (121) and are screwed and fastened on the inner wall of the threaded holes (111).
  5. 5. A motor according to claim 4, wherein the base (11) is connected with a plurality of locking components (5), the locking components (5) are in one-to-one correspondence with the threaded holes (111), the locking components (5) comprise locking plates (51), rotating rods (52) and limiting plates (53), one ends of the locking plates (51) are connected to the surface of the base (11) close to the threaded holes (111), the other ends of the locking plates (51) protrude out of the end face of the base (11), rotating cavities (511) are formed in the end faces of the locking plates (51) far away from the base (11), one ends of the rotating rods (52) are connected to the inner wall of the rotating cavities (511) in a rotating mode, the other ends of the rotating rods (52) protrude out of the surfaces of the locking plates (51) and are connected to the surfaces of the limiting plates (53), the rotating axes of the rotating rods (52) and the axes of the base (11) are parallel to each other, when the end covers (12) cover the end faces of the base (11), the outer peripheral faces of the locking plates (51) face the surface of the base (11), the threaded holes (111), the threaded holes (121) are fixedly connected to the end portions of the rotating rods (52) in a screwed mode, the plate surface of the limiting plate (53) is in one-to-one correspondence with the surface of the end cover (12) to be abutted against the two ends of the screw head to form limiting.
  6. 6. The motor of claim 5, wherein the locking assembly (5) further comprises a first elastic member (54), one end of the first elastic member (54) in the elastic direction is connected to the inner wall of the rotating cavity (511), the other end of the first elastic member (54) in the elastic direction is connected to the rod surface of the rotating rod (52), the first elastic member (54) has an elastic force to drive the rotating rod (52) to rotate, the limiting plate (53) is close to the end cover (12), and the plate surface of the limiting plate (53) and the surface of the end cover (12) are in one-to-one correspondence to the trend of abutting against the two ends of the head of the screw.
  7. 7. The motor of claim 5, wherein the locking assembly (5) further comprises a positioning rod (55), a positioning block (56) and a second elastic member (57), the end face, far away from the base (11), of the locking plate (51) is provided with a sliding cavity (512) for sliding the positioning rod (55), the sliding direction of the positioning rod (55) and the rotation axis of the rotating rod (52) are parallel to each other, the positioning block (56) is connected to the end face, facing the rotating rod (52), of the positioning rod (55), a plurality of positioning grooves (521) for the positioning block (56) to be embedded in are formed in the outer peripheral surface of the rotating rod (52) at intervals, one end, facing the elastic direction, of the second elastic member (57) is connected to the inner wall of the sliding cavity (512), the other end, facing the elastic direction, of the second elastic member (57) is connected to the rod face of the positioning rod (55), the second elastic member (57) is provided with a trend of driving the positioning rod (55) to be close to the locking plate (51), and the positioning block (56) is embedded in one positioning groove (521).
  8. 8. The motor of claim 7, wherein the locking assembly (5) further comprises a limiting block (58) and an elastic piece III (59), a limiting cavity (551) for the limiting block (58) to slide is formed in the surface of the positioning rod (55) facing the sliding cavity (512), a limiting groove (513) for the end part of the limiting block (58) to be embedded is formed in the inner wall of the sliding cavity (512), when the positioning block (56) is embedded into one of the positioning grooves (521), the limiting groove (513) is communicated with the limiting cavity (551), one end of the elastic piece III (59) in the elastic direction is connected to the inner wall of the limiting cavity (551), the other end of the elastic piece III (59) in the elastic direction is connected to the surface of the limiting block (58), and the elastic piece III (59) is provided with a trend that the end part of the limiting block (58) is embedded into the limiting groove (513) in an elastic driving mode and the positioning rod (55) slides.
  9. 9. The motor of claim 8, wherein the locking assembly (5) further comprises a reset block (510), a connecting rope (514) and a fourth elastic member (515), the elastic coefficient of the fourth elastic member (515) is smaller than that of the third elastic member (59), a slide way (552) for sliding the reset block (510) is arranged on the end surface of the positioning rod (55) far away from the locking plate (51), the sliding direction of the reset block (510) and the sliding direction of the limiting block (58) are parallel to each other, the slide way (552) is communicated with a limiting cavity (551), one end of the connecting rope (514) is connected to the surface of the reset block (510), the other end of the connecting rope (514) is connected to the surface of the limiting block (58), one end of the fourth elastic member (515) in the elastic direction is connected to the surface of the reset block (510), the other end of the fourth elastic member (515) in the elastic direction is connected to the inner wall of the slide way (552), the fourth elastic member (515) is provided with an elastic force to drive the reset block (510) to slide away from the positioning rod (55), the sliding direction of the reset block (510) is protruded out of the positioning rod (55), the end of the reset block (510) is embedded in the limiting groove (58) when the end of the limiting rod (514) is embedded in the limiting groove (58), the limiting block (58) pulls the reset block (510) to be close to the slideway (552) through the connecting rope (514), and the end face of the reset block (510) is flush with the surface of the positioning rod (55).
  10. 10. The motor of claim 9, wherein the locking assembly (5) further comprises a sliding block (516), the sliding block (516) is connected to the surface of the reset block (510), and a sliding groove (553) for sliding the sliding block (516) is formed in the inner wall of the sliding way (552).

Description

Motor Technical Field The application relates to the field of industrial equipment, in particular to a motor. Background The motor is an electric device for converting electric energy into mechanical energy, and utilizes an electrified coil to generate a rotating magnetic field and acts on a rotor to form magneto-electric power rotating torque so as to provide power for various mechanical devices. When the motor runs, the openings of the stator and the rotor grooves easily cause tooth harmonic waves in the air gap magnetic field, the harmonic magnetic fields can interact with the fundamental magnetic field to generate additional torque and radial force waves, and the motor stator core is excited to vibrate, so that motor noise is generated, and normal use of the motor by a user is affected. Disclosure of Invention In order to improve the problem of motor noise, the application provides a motor. The application provides a motor, which adopts the following technical scheme: The motor comprises a shell and a rotor rotationally connected to the inner cavity of the shell, wherein the rotor comprises a yoke part and a plurality of tooth parts, the tooth parts are uniformly connected to the outer peripheral surface of the yoke part at intervals around the axis of the yoke part, tooth grooves for winding coils are reserved between adjacent tooth parts, and the planes of the adjacent two tooth parts facing the tooth grooves are parallel to each other. Through adopting above-mentioned technical scheme, when the motor is operated, adjacent tooth portion is parallel to each other towards the plane of tooth's socket, and tooth's socket width is even, make the air gap magnetic field in the ascending distribution of circumferencial direction more even, reduce the magnetic field local distortion that leads to because of tooth's socket shape is irregular, weaken the amplitude of tooth harmonic, and the design that the plane is parallel to each other makes radial force wave in the ascending distribution of circumferencial direction more symmetrical, partial force wave offset each other, reduce the excitation to stator core, and reduce the interaction force between rotor tooth and the stator groove, reduce tooth's socket torque, thereby vibration and the noise of motor have been reduced, guarantee the normal use of user to the motor. Optionally, the rotor further comprises a plurality of guide blocks, the guide blocks are in one-to-one correspondence with the tooth grooves, and the guide blocks are connected to the surface, facing the tooth grooves, of the yoke part. By adopting the technical scheme, the guide block introduces a specific harmonic component in the air gap magnetic field, and the harmonic caused by the guide block and the harmonic caused by the stator main groove are mutually offset when being overlapped in the air gap, so that the excitation force causing noise is weakened, and the noise reduction effect of the motor is further improved. Optionally, the end faces of the guide blocks facing the tooth parts are provided with guide surfaces, and the inclined heights of the guide surfaces are increased along with the decrease of the distance from the yoke parts. By adopting the technical scheme, the inclined height of the guide surface is increased along with the reduction of the distance from the guide surface to the yoke part, so that the guide block introduces a specific harmonic component in the air gap magnetic field, the harmonic component is equal to the main harmful harmonic amplitude caused by the main stator groove, but opposite in phase, and the harmonic component and the main harmful harmonic amplitude are mutually offset after being overlapped in the air gap, thereby weakening the exciting force of noise, realizing the accurate regulation and control of the air gap magnetic field, reducing the fluctuation of the magnetic field, reducing the vibration noise caused by the change of the magnetic field, and further improving the noise reduction effect of the motor. Optionally, the casing includes frame and two at least end covers, the end cover surface all is equipped with a plurality of fixed orifices that supply the screw tip to wear to establish at intervals, the both ends of frame axis direction all are equipped with a plurality of screw holes that supply the screw tip to screw up at intervals, at least two the end cover corresponds with the both ends of frame axis direction one-to-one, just screw hole and fixed orifices one-to-one and intercommunication, the screw tip wears to establish the fixed orifices and screw thread tightening is fixed at the screw hole inner wall. Through adopting above-mentioned technical scheme, two end covers one-to-one cover closes the both ends of frame axis direction, and screw hole and fixed orifices one-to-one and intercommunication, screw tip wear to establish the fixed orifices and screw thread tightening fixes at the screw hole inner wall formation casing, realizes