CN219420387U - Rotary electric machine - Google Patents

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

rotating electrical machine

technical field

The utility model relates to a motor.

Background technique

The basic structure of the known motor for hundreds of years includes a stator, a rotor, a winding and a rotating shaft. The middle part of the stator has a cylindrical central channel for the rotor to rotate. The rotor is rotatably set in the central channel of the stator. At present, the common embedding slots are straight along the axial direction of the stator. In order to increase the motor torque under the condition of constant volume, according to the Ampere force formula: F=BLI, more consideration is to change the size of B and I, but it is rarely considered that the motor changes the motor torque by changing the size of L. How to improve F by increasing L is also the research direction of those skilled in the art.

Utility model content

The technical problem to be solved by the utility model is to provide a rotating electrical machine capable of increasing output torque and power in view of the above-mentioned technical status quo.

The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a rotating electrical machine, including a stator, a rotor, a stator winding and a rotating shaft. The middle part of the stator has a central passage for the rotor to rotate. The reason is that the wire embedding slots are arranged in a spiral shape, and correspondingly, the stator windings are also in a spiral shape.

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

Further, the front end surface of the winding teeth has helical fixed teeth, and correspondingly, the outer circumference of the rotor has helical rotating teeth.

Further, the outer periphery of the rotor is provided with permanent magnets along the axial direction, the outer surface of the permanent magnets is helical, and the helical angle of the outer surface of the permanent magnets is consistent with the helical angle of the wire groove.

The installation structure of the permanent magnet is preferably set as follows: the outer arm of the rotor is formed with a helical groove along the axial direction, and the permanent magnet is arranged in the groove and kept flat with the outer wall of the rotor.

Further, the outer arm of the rotor is formed with helical winding slots along the axial direction, and there are protrusions between adjacent winding slots, and rotor windings are arranged on the protrusions.

Compared with the prior art, the utility model has the advantages that: the wire embedding groove on the stator is changed from a linear type to a spiral type, and the effective length of the cutting magnetic force line is increased under the premise of the same overall volume, which is beneficial to the improvement of the output torque and power of the motor.

Description of drawings

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

FIG. 2 is an exploded view of FIG. 1 .

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

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

FIG. 5 is an exploded view of FIG. 4 .

FIG. 6 is a structural schematic view of the rotor in FIG. 5 from another perspective.

Fig. 7 is a schematic structural diagram of Embodiment 3 (both the stator winding and the rotor winding are not shown).

FIG. 8 is an exploded view of FIG. 7 .

9 is a schematic cross-sectional view of the rotor in Embodiment 3.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

Embodiment 1, as shown in Fig. 1, Fig. 2 and Fig. 3, this 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. The middle part of the stator 1 has a central passage for the rotor 2 to rotate, and there is an air gap between the rotor 2 and the stator 1. In the slot 11, the rotating shaft 3 is arranged axially on the rotor 2 and can rotate together with the rotor 2. The wire-filling slot 11 is arranged in a helical shape, and correspondingly, the stator winding 4 is also in a helical shape. The front end surface of the winding teeth 12 has helical fixed teeth 13 , and correspondingly, the outer circumference of the rotor 2 has helical rotating teeth 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 helical curved surface. When stacking each silicon steel sheet, the silicon steel sheet is rotated at a fixed original angle according to the pre-designed helix requirements, or the silicon steel sheet does not move, and the relative upper and lower dies rotate at a corresponding angle, and the corresponding permanent magnet or rotor embedding groove is also made into a helical shape according to the same requirements of the helix.

Embodiment 2, as shown in FIG. 4 , FIG. 5 and FIG. 6 , this embodiment relates to a DC brushless motor. The outer periphery of the rotor 2 is provided with a permanent magnet 5 along the axial direction. The outer surface of the permanent magnet 5 is helical, and the helical angle of the outer surface of the permanent magnet 5 is consistent with the helical angle of the wire groove 11 . Specifically, the outer arm of the rotor 2 is formed with a helical groove 21 along the axial direction, and the permanent magnet 5 is arranged in the groove 21 and kept flat with the outer wall of the rotor 2 . Refer to Example 1 for other structures.

Embodiment 3, as shown in FIG. 7 , FIG. 8 and FIG. 9 , this embodiment relates to an asynchronous induction motor. The outer arm of the rotor 2 is formed with helical winding slots 22 along the axial direction, and there is a protrusion between adjacent winding slots 22 , and the rotor winding 6 is arranged on the protrusion. Refer to Example 1 for other structures.

Claims (6)

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.