CN219420387U

CN219420387U - Rotary electric machine

Info

Publication number: CN219420387U
Application number: CN202320209821.0U
Authority: CN
Inventors: 俞富春
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-07-25
Anticipated expiration: 2033-01-17

Abstract

The utility model provides a rotating electrical machines, includes stator, rotor, stator winding and pivot, and the aforesaid stator middle part has the central passageway that supplies rotor pivoted, and the aforesaid rotor can locate in the central passageway of stator rotationally, and the protruding a plurality of wire winding teeth that are equipped with of inner wall of aforesaid stator forms the wire casing between the adjacent wire winding tooth, and aforesaid stator winding winds on the wire winding tooth and inlays and locate in the wire casing, and aforesaid pivot axial is located on the rotor and can rotate along with the rotor, its characterized in that the wire casing be the heliciform and arrange, correspondingly, the winding also be the heliciform. The coil inserting grooves on the stator are changed into spiral grooves from linear type, and on the premise of unchanged overall volume, the effective length of the magnetic force lines is increased, so that the output torque and the power of the motor are improved.

Description

Rotary electric machine

Technical Field

The present utility model relates to an electric motor.

Background

The basic structure of a motor known for hundreds of years comprises a stator, a rotor, windings and a rotating shaft, wherein a cylindrical central channel for the rotor to rotate is arranged in the middle of the stator, the rotor can be rotationally arranged in the central channel of the stator, a plurality of winding teeth are convexly arranged on the inner wall of the stator, a wire embedding groove is formed between every two adjacent winding teeth, the windings are wound on the winding teeth and are embedded in the wire embedding groove, and the rotating shaft is axially arranged on the rotor and can rotate along with the rotor. At present, a common coil inserting groove is in a straight line along the axis direction of a stator, and in order to improve the motor torque under the condition of unchanged volume, the coil inserting groove is formed according to an ampere force formula: f=bli, more consideration is given to varying the size of B, I, but few consideration are given to varying the motor torque by varying the size of L, how to provide F by increasing L is also a direction of study by those skilled in the art.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned problems occurring in the prior art, and an object of the present utility model is to provide a rotary electric machine capable of improving output torque and power.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a rotating electrical machines, includes stator, rotor, stator winding and pivot, and the aforesaid stator middle part has the central passageway that supplies rotor pivoted, and the aforesaid rotor can locate in the central passageway of stator rotationally, and the protruding a plurality of wire winding teeth that are equipped with of inner wall of aforesaid stator forms the wire casing between the adjacent wire winding tooth, and aforesaid stator winding winds on the wire winding tooth and inlays and locate in the wire casing, and aforesaid pivot axial is located on the rotor and can rotate along with the rotor, its characterized in that the wire casing be the heliciform and arrange, correspondingly, stator winding also be the heliciform.

Preferably, the stator is formed by stacking a plurality of silicon steel sheets, and the notch surface of each silicon steel sheet is a spiral curved surface.

Further, the front end surface of the winding tooth is provided with a spiral fixed tooth, and correspondingly, the periphery of the rotor is provided with a spiral rotating tooth.

Further, the outer periphery of the rotor is provided with a permanent magnet along the axial direction, the outer surface of the permanent magnet is in a spiral shape, and the spiral angle of the outer surface of the permanent magnet is consistent with the spiral angle of the wire embedding groove.

The mounting structure of the permanent magnet is preferably set as follows: the outer arm of the rotor is provided with a spiral groove along the axial direction, and the permanent magnet is arranged in the groove and keeps flat with the outer wall of the rotor.

Further, the outer arm of the rotor is formed with spiral winding grooves along the axial direction, a convex part is arranged between the adjacent winding grooves, and a rotor winding is arranged on the convex part.

Compared with the prior art, the utility model has the advantages that: the coil inserting grooves on the stator are changed into spiral grooves from linear type, and on the premise of unchanged overall volume, the effective length of the magnetic force lines is increased, so that the output torque and the power of the motor are improved.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 (stator winding is not shown).

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic cross-sectional view of the stator in embodiment 1.

Fig. 4 is a schematic structural diagram of embodiment 2 (stator winding is not shown).

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a schematic view of another view angle structure of the rotor in fig. 5.

Fig. 7 is a schematic diagram of the structure of example 3 (neither stator winding nor rotor winding is shown).

Fig. 8 is an exploded view of fig. 7.

Fig. 9 is a schematic cross-sectional view of a rotor in embodiment 3.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In embodiment 1, as shown in fig. 1, 2 and 3, the embodiment discloses a three-phase stepping motor, which specifically includes a stator 1, a rotor 2, a stator winding 4 and a rotating shaft 3, wherein a central channel for the rotor 2 to rotate is provided in the middle of the stator 1, an air gap is provided between the rotor 2 and the stator 1, the rotor 2 is rotatably provided in the central channel of the stator 1, a plurality of winding teeth 12 are convexly provided on the inner wall of the stator 1, the stator winding 4 is wound on the winding teeth 12 and is embedded in an embedding groove 11, the rotating shaft 3 is axially provided on the rotor 2 and can rotate along with the rotor 2, the embedding groove 11 is spirally arranged, and correspondingly, the stator winding 4 is spirally arranged. The front end surface of the winding tooth 12 has a spiral fixed tooth 13, and correspondingly, the outer periphery of the rotor 2 has a spiral rotating tooth 23.

The stator 1 in this embodiment is formed by stacking a plurality of silicon steel sheets, and the cut surface of each silicon steel sheet is a spiral curved surface. When each silicon steel sheet is laminated, the silicon steel sheet rotates by a fixed original angle according to the requirement of a predesigned spiral line, or the silicon steel sheet is fixed, the upper die and the lower die which are opposite rotate by corresponding angles, and the corresponding permanent magnet or rotor embedded groove is also made into the shape of the spiral line according to the same requirement of the spiral line.

Embodiment 2, as shown in fig. 4, 5 and 6, relates to a dc brushless motor. The outer circumference of the rotor 2 is provided with a permanent magnet 5 along the axial direction, the outer surface of the permanent magnet 5 is in a spiral shape, and the spiral angle of the outer surface of the permanent magnet 5 is consistent with the spiral angle of the coil inserting groove 11. Specifically, the outer arm of the rotor 2 is formed with a spiral groove 21 along the axial direction, and the permanent magnet 5 is disposed in the groove 21 and kept flat with the outer wall of the rotor 2. Other structures refer to embodiment 1.

Embodiment 3, as shown in fig. 7, 8 and 9, relates to an asynchronous induction motor. The outer arm of the rotor 2 is formed with spiral winding grooves 22 along the axial direction, and adjacent winding grooves 22 have a convex portion between them, and the rotor winding 6 is provided on the convex portion. Other structures refer to embodiment 1.

Claims

1. The utility model provides a rotating electrical machines, including stator (1), rotor (2), stator winding (4) and pivot (3), the central passage that supplies rotor (2) pivoted is had at the middle part of aforementioned stator (1), in the central passage of aforementioned rotor (2) rotationally locates stator (1), the protruding a plurality of wire winding teeth (12) that are equipped with of inner wall of aforementioned stator (1), form wire embedding groove (11) between adjacent wire winding teeth (12), aforementioned stator winding (4) coiling is on wire winding teeth (12) and inlay and locate in wire embedding groove (11), aforementioned pivot (3) are located on rotor (2) axially and can rotate along with rotor (2), its characterized in that wire embedding groove (11) be the heliciform and arrange, correspondingly, stator winding (4) also be the heliciform.

2. The rotating electric machine according to claim 1, characterized in that the stator (1) is formed by stacking a plurality of silicon steel sheets, and the cut surface of each silicon steel sheet is a spiral curved surface.

3. The rotating electrical machine according to claim 1, wherein the front end surface of the winding tooth (12) has a spiral fixed tooth (13), and correspondingly, the outer circumference of the rotor (2) has a spiral rotating tooth (23).

4. A rotating electrical machine according to claim 1, characterized in that the outer periphery of the rotor (2) is provided with permanent magnets (5) in the axial direction, the outer surfaces of the permanent magnets (5) are spiral-shaped, and the spiral angle of the outer surfaces of the permanent magnets (5) is kept consistent with the spiral angle of the wire insertion groove (11).

5. The rotating electrical machine according to claim 4, wherein the outer arm of the rotor (2) is formed with a spiral groove (21) along the axial direction, and the permanent magnet (5) is disposed in the groove (21) and keeps flat with the outer wall of the rotor (2).

6. A rotating electrical machine according to claim 1, characterized in that the outer arms of the rotor (2) are formed with spiral winding grooves (22) in the axial direction, with protrusions between adjacent winding grooves (22), on which rotor windings (6) are provided.