A magnetic reversing motor with axial winding

Abstract

The utility model discloses an axially wound magnetic reversing motor, comprising a shell, a coil group, an upper silicon steel sheet and a lower silicon steel sheet, wherein the upper and lower ends of the coil group are respectively provided with an upper magnetic pole piece and a lower magnetic pole piece of the same structure, the upper silicon steel sheet and the lower silicon steel sheet have the same structure, an excitation sheet is provided on the upper silicon steel sheet, and the excitation sheet comprises two excitation sheets arranged in mirror images, and the excitation sheet is a bent sheet with unequal thickness at both ends. The beneficial effects of the utility model: the upper silicon steel sheet and the lower silicon steel sheet arranged up and down cooperate with the coil group, the excitation sheet and the magnetic pole piece are arranged correspondingly to each other, different excitation areas are formed by the excitation sheets of unequal thickness at both ends, uneven magnetic force is achieved, the rotor starting lag caused by the drift of the excitation direction is avoided, the stability of single-direction rotation is effectively improved, and the torque fluctuation amplitude is weakened by the first and second notches of unequal width and spaced distribution, the vibration is reduced, and the speed stability is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic direction-changing motors, in particular to an axially wound magnetic direction-changing motor. Background Art

[0002] A magnetic reversing motor is a device that converts magnetic force into kinetic energy of the output shaft by converting the DC current passing through the brush into an alternating current in the coil winding or converting the alternating electromotive force in the coil winding into a DC electromotive force at the brush end.

[0003] The stator structure of a magnetic reversing motor is mostly composed of a coil group and a silicon steel sheet. The magnetic force is excited by the excitation sheet bent on the silicon steel sheet. The existing excitation sheet structure is mostly rectangular sheets with equal distance and thickness distribution. Therefore, the excitation magnetic force received by the coil group is relatively uniform, resulting in uncertain rotation direction, weak starting torque of the rotor, and slow rotation speed. The excitation sheet causes the excited surfaces to be the same, affecting the starting force of the rotor in the coil group and poor uniformity of the driving rotation direction. Utility Model Content

[0004] The utility model aims to provide an axially wound magnetic reversing motor to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an axially wound magnetic reversing motor, comprising a shell, a coil group, an upper silicon steel sheet and a lower silicon steel sheet, wherein the upper and lower ends of the coil group are respectively provided with an upper magnetic pole piece and a lower magnetic pole piece with the same structure, the upper silicon steel sheet and the lower silicon steel sheet have the same structure, an excitation sheet body is provided on the upper silicon steel sheet, and the excitation sheet body comprises two excitation sheets arranged in a mirror image, and the excitation sheet is a bent sheet body with unequal thickness at both ends.

[0007] Furthermore, an axial positioning hole is provided on the upper silicon steel sheet, and two assembly positioning holes are opened on the upper silicon steel sheet and the lower silicon steel sheet.

[0008] Furthermore, the coil assembly is also provided with an axial hole and two positioning columns, the axial hole is arranged corresponding to the axial positioning hole, and the two positioning columns are arranged one-to-one corresponding to the assembly positioning holes.

[0009] Furthermore, the upper magnetic pole piece and the lower magnetic pole piece are arranged opposite to each other, and the upper magnetic pole piece includes two magnetic pole pieces arranged in a mirror image, and the side of the magnetic pole piece close to the excitation piece is a magnetic pole surface.

[0010] Furthermore, the two magnetic pole pieces are arc-shaped pieces perpendicular to the coil group, and the two magnetic pole pieces are matched with the excitation piece.

[0011] Furthermore, the excitation plate body and the pole plate body are matched and installed to form a first notch and a second notch.

[0012] Furthermore, the first notch and the second notch are spaced apart from each other, and the width of the first notch is smaller than the width of the second notch.

[0013] Beneficial effect: An axially wound magnetic reversing motor adopts a structure in which an upper silicon steel sheet, a lower silicon steel sheet and a coil group are arranged in a coordinated manner. The excitation sheet and the pole sheet are arranged corresponding to each other. Different excitation areas are formed by excitation sheets with different thicknesses at both ends to achieve uneven magnetic force, avoid rotor starting lag caused by the drift of the excitation direction, effectively improve the stability of unidirectional rotation, and weaken the torque fluctuation amplitude through the first and second slots with unequal widths and spaced distribution, reduce vibration, and ensure speed stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model.

[0016] Reference numerals

[0017] 1-coil assembly, 2-upper silicon steel sheet, 3-lower silicon steel sheet, 4-upper magnetic pole piece, 41-magnetic pole piece, 42-magnetic pole surface, 5-excitation piece, 51-excitation piece, 6-positioning hole, 7-assembly hole, 8-axis hole, 9-positioning column, 10-lower magnetic pole piece, 11-first notch, 12-second notch, 13-shell. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] Example

[0020] like Figure 1-2 As shown, an axially wound magnetic reversing motor includes a shell 13, a coil group 1, an upper silicon steel sheet 2 and a lower silicon steel sheet 3. The upper and lower ends of the coil group 1 are respectively provided with an upper magnetic pole piece 4 and a lower magnetic pole piece 10 with the same structure. The upper silicon steel sheet 2 and the lower silicon steel sheet 3 have the same structure. An excitation sheet 5 is provided on the upper silicon steel sheet 2. The excitation sheet 5 includes two mirror-arranged excitation sheets 51. The excitation sheet 51 is a bent sheet with unequal thickness at both ends.

[0021] An axial positioning hole 6 is provided on the upper silicon steel sheet 2, and two assembly positioning holes 7 are opened on the upper silicon steel sheet 2 and the lower silicon steel sheet 3. The coil group 1 is also provided with an axial hole 8 and two positioning columns 9. The axial hole 8 is arranged corresponding to the axial positioning hole 6, and the two positioning columns 9 are arranged one by one corresponding to the assembly positioning holes 7. The coil group 1 is assembled into one by the two positioning columns 9 and the axial positioning hole 6 on the upper silicon steel sheet 2. The axial positioning hole 6 is inserted into the axial hole 8 and cooperates with one end of the rotating shaft on the shell 13.

[0022] The upper pole piece 4 and the lower pole piece 10 are arranged opposite to each other, and the upper pole piece 4 includes two mirror-arranged pole pieces 41. The side of the pole piece 41 close to the excitation piece 51 is a pole surface 42. The two pole pieces 41 are arc-shaped pieces perpendicular to the coil group 1, and the two pole pieces 41 are matched with the excitation piece 51. The excitation piece 51 is located on the outside of the pole piece 41. The coil is wound in the coil group 1. The magnetic force generated by the coil winding is transmitted to the excitation piece 51 through the pole piece 41 for excitation. The excitation pieces with different thicknesses at both ends make the excitation area different, thereby generating an unevenly distributed excitation magnetic force.

[0023] After the excitation plate 5 is matched with the pole plate 4 and installed, a first slot 11 and a second slot 12 are formed. The first slot 11 and the second slot 12 are spaced apart from each other. The width of the first slot 11 is smaller than the width of the second slot 12. The first slot 11 and the second slot 12 interact with the magnetic field between the coil winding. Through the first slot 11 and the second slot 12 of different widths, the torque fluctuation amplitude is weakened, the vibration is reduced, and the speed stability is ensured.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. An axially wound magnetic reversing motor, characterized in that: The invention comprises a shell (13), a coil group (1), an upper silicon steel sheet (2) and a lower silicon steel sheet (3), wherein the upper and lower ends of the coil group (1) are respectively provided with an upper magnetic pole sheet (4) and a lower magnetic pole sheet (10) of the same structure, the upper silicon steel sheet (2) and the lower silicon steel sheet (3) have the same structure, an excitation sheet (5) is provided on the upper silicon steel sheet (2), and the excitation sheet (5) comprises two excitation sheets (51) arranged in a mirror image, and the excitation sheet (51) is a bent sheet with unequal thickness at both ends.

2. The axially wound magnetic reversing motor according to claim 1, characterized in that: The upper silicon steel sheet (2) is provided with an axial positioning hole (6), and the upper silicon steel sheet (2) and the lower silicon steel sheet (3) are both provided with two assembly positioning holes (7).

3. The axially wound magnetic reversing motor according to claim 2, characterized in that: The coil assembly (1) is also provided with an axial hole (8) and two positioning columns (9); the axial hole (8) is arranged corresponding to the axial positioning hole (6), and the two positioning columns (9) are arranged in a one-to-one correspondence with the assembly positioning holes (7).

4. The axially wound magnetic reversing motor according to claim 1, characterized in that: The upper magnetic pole piece (4) and the lower magnetic pole piece (10) are arranged opposite to each other, the upper magnetic pole piece (4) comprises two magnetic pole pieces (41) arranged in mirror images, and the side of the magnetic pole piece (41) close to the excitation piece (51) is a magnetic pole surface (42).

5. The axially wound magnetic reversing motor according to claim 4, characterized in that: The two magnetic pole pieces (41) are in the shape of arc-shaped pieces perpendicular to the coil group (1), and the two magnetic pole pieces (41) are arranged to match the excitation piece (51).

6. The axially wound magnetic reversing motor according to claim 1, characterized in that: The excitation plate body (5) and the magnetic pole plate body (4) are matched and installed to form a first notch (11) and a second notch (12).

7. The axially wound magnetic reversing motor according to claim 6, characterized in that: The first notch (11) and the second notch (12) are arranged at an interval, and the width of the first notch (11) is smaller than the width of the second notch (12).

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