CN216451269U

CN216451269U - Oscillating motor

Info

Publication number: CN216451269U
Application number: CN202122682728.5U
Authority: CN
Inventors: 管恩平; 赵洪韬
Original assignee: Guangzhou Chaojing Intelligent Technology Co ltd
Current assignee: Guangzhou Chaojing Intelligent Technology Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-05-06
Anticipated expiration: 2031-11-04

Abstract

A swing motor comprises stators (3) and rotors (4), wherein at least one pair of stators (3) are symmetrically arranged, and the rotors (4) are arranged between the stators (3); the stator (3) comprises a stator core (31) and a stator coil (32), the rotor (4) comprises a rotating core (41) and a permanent magnet (42), the swinging rotating shaft (2) is fixed on a central axis of the rotating core (41), and the permanent magnet (42) is fixedly arranged on the rotating core (41); a first bearing (51) is arranged, the first bearing (51) is sleeved on the front section of the swing rotating shaft (2), and a second bearing (52) is arranged at the tail end of the swing rotating shaft (2); the first bearing (51) and the second bearing (52) are respectively arranged in the bearing seat (7), and the bearing seat (7) is fixed at two ends through the bearing seat bracket (8); the number of the permanent magnets (42) is 2, one magnet is respectively placed on one side of each permanent magnet, the permanent magnets are symmetrically arranged, and the magnetic pole direction is orthogonal to the magnetic pole direction of the stator. The utility model has good fixed position and good shock absorption; the manufacturing cost is not high, and the coil winding is convenient.

Description

Oscillating motor

Technical Field

The present invention relates to a motor, and more particularly to a motor having an output shaft that can swing.

Background

The existing vibration motor mostly adopts an eccentric block to obtain a vibration effect, and the noise is large when the motor runs.

Disclosure of Invention

The utility model aims to provide a swing motor with low noise.

The utility model adopts a technical scheme for achieving the aim that: a swing motor comprises stators and rotors, wherein at least one pair of stators are symmetrically arranged in a shell, and the rotors are arranged between the stators; the stator comprises a stator core and a stator coil, the rotor comprises a rotating core and a permanent magnet, the swinging rotating shaft is fixed on the central axis of the rotating core, and the permanent magnet is fixedly arranged on the rotating core; the first bearing is sleeved at the front section of the swinging rotating shaft, and the second bearing is arranged at the tail end of the swinging rotating shaft; the first bearing and the second bearing are respectively arranged in a bearing seat, and the bearing seats are fixed at two ends through bearing seat brackets;

2 permanent magnets are arranged, one magnet is respectively arranged on one side of each permanent magnet, the permanent magnets are symmetrically arranged, and the magnetic pole direction is orthogonal to the magnetic pole direction of the stator; or 4 permanent magnets are arranged, two magnets are respectively arranged on one side in the same direction, the head-tail connecting parts of the magnets are separated by iron cores, the magnetic pole directions of the two magnets are consistent to form a group of magnets, and the magnetic pole directions are orthogonal to the magnetic pole direction of the stator;

or 4 magnets are arranged, two magnets are arranged on one side of each magnet in different directions, the magnetic poles of the magnets are opposite in direction and are symmetrically distributed on the axial plane of the central line of the stator coil, the central magnetic pole direction can form an included angle with the axial plane, an iron core is arranged in the middle of each central magnetic pole for separation, and the magnetic poles of the two magnets are opposite in direction to form a group of magnets; the pole directions of the other set of magnets are symmetrical with respect to a plane normal to the axial plane in the direction of the first set of poles.

Preferably, the first bearing and the second bearing are one of a ball bearing, a self-lubricating shaft sleeve and a magnetic suspension bearing.

Preferably, the permanent magnets are arc magnets, and the magnet groups are formed to form orthogonal directions at axial plane positions of the center line of the stator coil.

Preferably, the stator core is provided with an arc surface facing the rotor, torque control angles are arranged at two ends of the arc surface, the arc surface is changed into a plane at the torque control angle position to form a protruding flat wing, and an included angle between the plane of the protruding flat wing and the central axis of the arc surface facing the center line side of the rotor is smaller than or equal to 90 degrees.

Preferably, the rotor further comprises a bracket, the bracket is provided with a rotary core channel, stator core fixing grooves are arranged on two sides of the rotary core channel, the rotor is installed in the rotary core channel, and the stator core is fixed on the bracket through the stator core fixing grooves.

Preferably, the stent is divided into two parts symmetrically along the central axis, the dividing surface is respectively and correspondingly provided with the insertion fixing column and the insertion fixing hole, and the insertion fixing column and the insertion fixing hole are arranged on the dividing surface at one side in a diagonal manner.

Preferably, stator wing fixing slots are formed at both sides of the stator core fixing slot, and the extended flat wing of the stator core is inserted into the stator wing fixing slots to fix the stator core to the bracket.

Preferably, the bracket is provided with a sensor mounting groove.

Preferably, a limiting groove is formed in the rotating core channel, a limiting protrusion is radially arranged on the rotating core, and the limiting protrusion is placed in the limiting groove.

Preferably, the rotating core surface between the magnets on one side is close to one side of the stator and is lower than the outer surface of the magnets; the interval arc length included angle of the magnet on the rotating core is smaller than the arc length included angle of the stator core.

The utility model has good fixed position and good shock absorption; the manufacturing cost is low, and the coil is convenient to wind; the motor has good rotating dynamic balance, symmetrical motor shaft center, low noise and small vibration.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment of the present invention;

FIG. 2 is an exploded view of one embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of one embodiment of the present invention;

FIG. 4 is a cross-sectional view of a stator core and rotor in accordance with one preferred embodiment of the present invention;

FIG. 5 is a cross-sectional view of the rotor and the bracket according to one embodiment of the present invention;

FIG. 6 is a schematic diagram of a second preferred embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a second preferred embodiment of the present invention;

FIG. 8 is a schematic view of a stator and rotor according to a second preferred embodiment of the present invention;

fig. 9 is a schematic view of a stator and a rotor according to a second preferred embodiment of the present invention.

Detailed Description

The utility model will be further explained with reference to the following figures and examples:

as shown in fig. 1, 2, 3, 6 and 7, an oscillating motor includes a housing 1, a stator 3, and a rotor 4, wherein at least one pair of stators 3 is provided and symmetrically arranged in the housing 1, and the rotor 4 is provided between the stators 3; the stator 3 comprises a stator core 31 and a stator coil 32, the rotor 4 comprises a rotating core 41 and a permanent magnet 42, the swing rotating shaft 2 is fixed on the central axis of the rotating core 41, and the permanent magnet 42 is fixedly arranged on the rotating core 41; the swing type rotary shaft is provided with a first bearing 51, a first bearing sleeve 51 is arranged at the front section of the swing rotary shaft 2, a second bearing 52 is arranged at the tail end of the swing rotary shaft 2, and a bearing seat 7 and a bearing seat support 8 are arranged at two ends of the second bearing.

As shown in fig. 8, 2 permanent magnets 42 are provided, one permanent magnet is placed on each side, and the permanent magnets are symmetrically arranged, and the magnetic pole direction is orthogonal to the magnetic pole direction of the stator.

As shown in fig. 9, there are 4 permanent magnets 42, two permanent magnets are disposed on one side of each permanent magnet in the same direction, the magnets are separated by iron cores at the end-to-end connection portions, the magnetic pole directions of the two magnets are the same to form a group of magnets, and the magnetic pole directions are orthogonal to the magnetic pole direction of the stator.

The motor swing freedom is constrained by bearings. The first bearing 51 and the second bearing 51 are one of a ball bearing, a self-lubricating shaft sleeve and a magnetic suspension bearing, and the first bearing 51 and the second bearing 51 may be the same type of bearing or different bearings.

The permanent magnets 42 are arc magnets, and the magnet groups are formed so as to be orthogonal to the axial plane position of the center line of the stator coil.

As shown in fig. 1, 2, 3, 6 and 7, an oscillating motor includes a housing 1, a stator 3, and a rotor 4, wherein at least one pair of stators 3 is provided and symmetrically arranged in the housing 1, and the rotor 4 is provided between the stators 3; the stator 3 includes a stator core 31, stator coils 32, the stator core 41 is a closed iron core, the number of the stator coils 32 is 2, and the center lines of the two stator coils are located on the motor shaft plane and are orthogonal to the rotor magnetic pole direction. The rotor 4 comprises a rotating core 41 and a permanent magnet 42, the swing rotating shaft 2 is fixed on the central axis of the rotating core 41, and the permanent magnet 42 is fixedly arranged on the rotating core 41; a first bearing 51 is arranged, the first bearing 51 is sleeved on the front section of the swing rotating shaft 2, and a second bearing 51 is arranged at the tail end of the swing rotating shaft 2; both ends are provided with a bearing bush 7 and a bearing bush bracket 8. The motor swing freedom is constrained by bearings. The first bearing and the second bearing are one of a ball bearing, a self-lubricating shaft sleeve and a magnetic suspension bearing, and the first bearing 51 and the second bearing 51 can be the same type of bearing or different bearings. The bearing sleeve 7 can be directly fixed on the housing 1, and the front end bearing seat 7 shown in fig. 6 is directly fixed on the housing 1, so that the assembly tolerance can be reduced.

As shown in fig. 9, there are 4 permanent magnets 42, two permanent magnets are disposed on one side of each permanent magnet in different directions, the magnetic poles of the magnets are opposite and symmetrically distributed on the axial plane of the central line of the coil, the central magnetic pole direction can form an included angle with the axial plane, the middle of each permanent magnet is separated by an iron core, and the magnetic poles of the two magnets are opposite to each other to form a group of magnets; the pole directions of the other set of magnets are symmetrical with respect to a plane normal to the axial plane in the direction of the first set of poles. The permanent magnet 42 may be an arc magnet, but a magnet group formed by the magnet may be orthogonal to the axial plane position of the center line of the stator coil.

As shown in fig. 4, the stator core 31 has an arc surface facing the rotor, torque control angles are provided at both ends of the arc surface, the arc surface is changed into a flat surface at the torque control angle position to form a protruding flat wing 33, and an included angle between the flat surface of the protruding flat wing 33 and the center axis of the arc surface facing the center line of the rotor is 90 degrees or less. The torque control angle is controlled by the arc length angle and is related to the spacing of the rotor magnets. As shown in fig. 4, the rotary core surface between the permanent magnets 42 on one side is on the side close to the stator and lower than the outer surface of the permanent magnets 42; the interval arc length included angle a1 of the permanent magnet 42 on the rotating core 41 is smaller than the arc length included angle a2 of the stator core 31, and is used for controlling the torque output characteristic curve requirements of the motor, including low swing angle high torque or high swing angle high torque and the like.

As shown in fig. 2 and 5, the stator core rotating device further includes a bracket 6, the bracket 6 is provided with a core rotating channel 61, stator core fixing grooves 62 are provided on both sides of the core rotating channel 61, the rotor 4 is installed in the core rotating channel 61, and the stator core 31 is fixed on the bracket 6 through the stator core fixing grooves 62.

As shown in fig. 2, the stent 6 is divided into two parts along the central axis, the dividing surfaces are respectively and correspondingly provided with insertion fixing posts and insertion fixing holes, and the insertion fixing posts and the insertion fixing holes are arranged diagonally on the dividing surface at one side, so that the production and assembly of the stent 6 are facilitated.

As shown in fig. 5, stator wing fixing grooves 63 are provided on both sides of the stator core fixing groove 62, and the extended flat wing 33 of the stator core 31 is inserted into the stator wing fixing grooves 63 to fix the stator core 31 to the bracket 6.

As shown in fig. 2, the bracket 6 is provided with a sensor mounting groove 64, and the sensor mounting groove 64 is provided above the stopper groove. The magnetic field intensity sensor is arranged in the sensor mounting groove and used for measuring the swing amplitude, the magnetic field intensity sensor can adopt a linear Hall sensor, a single-axis magnetometer, a three-axis magnetometer and the like, and the magnetic field intensity change of the specific direction of the space position can be measured. The rotation angle of the rotary core can be calculated according to the space magnetic field intensity change at the position, so that the swing amplitude of the motor and the maximum rotation angle of the rotary core, namely the swing amplitude of the motor can be measured.

As shown in fig. 5, a limiting groove 65 is provided on the rotary core passage 61, a limiting protrusion 43 is provided in the radial direction of the rotary core, and the limiting protrusion 43 is placed in the limiting groove 65.

Claims

1. A swing motor comprises stators (3) and rotors (4), wherein at least one pair of stators (3) are symmetrically arranged, and the rotors (4) are arranged between the stators (3); the method is characterized in that: the stator (3) comprises a stator core (31) and a stator coil (32), the rotor (4) comprises a rotating core (41) and a permanent magnet (42), the swinging rotating shaft (2) is fixed on the central axis of the rotating core (41), and the permanent magnet (42) is fixedly arranged on the rotating core (41); the swing mechanism is provided with a first bearing (51), the first bearing (51) is sleeved on the front section of the swing rotating shaft (2), and a second bearing (52) is arranged at the tail end of the swing rotating shaft (2); the first bearing (51) and the second bearing (52) are respectively arranged in the bearing seat (7), and the bearing seat (7) is fixed at two ends through the bearing seat bracket (8);

2 permanent magnets (42) are arranged, one magnet is respectively arranged on one side and symmetrically arranged, and the magnetic pole direction is orthogonal to the magnetic pole direction of the stator; or 4 permanent magnets (42) are arranged, two magnets are respectively arranged on one side in the same direction, the end-to-end connection parts of the magnets are separated by iron cores, the magnetic pole directions of the two magnets are consistent to form a group of magnets, and the magnetic pole directions are orthogonal to the magnetic pole direction of the stator;

or 4 permanent magnets (42) are arranged, two magnets are respectively arranged on one side of each permanent magnet in different directions, the magnetic poles of the magnets are opposite in direction and are symmetrically distributed on an axial plane of the central line of the stator coil, the central magnetic pole direction can form an included angle with the axial plane, the permanent magnets (42) are separated by an iron core, and the magnetic poles of the two magnets are opposite in direction to form a group of magnets; the pole directions of the other set of magnets are symmetrical with respect to a plane normal to the axial plane in the direction of the first set of poles.

2. The swing motor of claim 1, wherein: the first bearing (51) and the second bearing (52) are respectively one of a ball bearing, a self-lubricating shaft sleeve and a magnetic suspension bearing.

3. The swing motor of claim 1, wherein: the permanent magnet (42) is an arc magnet, and the magnet group is formed to be orthogonal to the axial plane position of the center line of the stator coil.

4. The swing motor of claim 1, wherein: an arc surface is arranged on the side, facing the rotor, of the stator core (31), torque control angles are arranged at two ends of the arc surface, the arc surface is changed into a plane at the torque control angle position to form a protruding flat wing (33), and the included angle of the plane, extending out of the flat wing (33), on the side, facing the central line of the rotor, of the central axis of the arc surface is smaller than or equal to 90 degrees.

5. The swing motor of claim 1, wherein: still include support (6), support (6) set up and change core passageway (61), set up stator core fixed slot (62) in the both sides of changeing core passageway (61), and rotor (4) are installed in changeing core passageway (61), and stator core (31) are fixed on support (6) through stator core fixed slot (62).

6. The swing motor of claim 5, wherein: the support (6) is divided into two parts along the central axis, inserting and fixing columns and inserting and fixing holes are respectively and correspondingly arranged on the dividing surface, and the inserting and fixing columns and the inserting and fixing holes are diagonally arranged on the dividing surface on one side.

7. The swing motor of claim 5, wherein: stator wing fixing grooves (63) are formed in the two sides of the stator core fixing groove (62), the extended flat wing (33) of the stator core (31) is inserted into the stator wing fixing grooves (63), and the stator core (31) is fixed on the support (6).

8. The swing motor of claim 5, wherein: the bracket (6) is provided with a sensor mounting groove (64).

9. The swing motor of claim 5, wherein: a limiting groove (65) is formed in the rotary core channel (61), a limiting protrusion (43) is radially arranged on the rotary core (41), and the limiting protrusion (43) is placed in the limiting groove (65).

10. The swing motor of claim 4, wherein: the rotating core surface between the permanent magnets (42) on one side is close to one side of the stator and is lower than the outer surface of the permanent magnet; the interval arc length included angle of the permanent magnet (42) on the rotating core (41) is smaller than the arc length included angle of the stator core (31).