Magnetic slot wedge structure of motor

Abstract

The utility model relates to the field of motor equipment, and discloses a magnetic slot wedge structure of a motor, which comprises a stator iron core, a plurality of notches are formed in one side of the stator iron core, and a magnetic slot wedge assembly is embedded in the inner side of each clamping groove; each magnetic slot wedge assembly comprises an insulating resin framework and a magnetic conductive block, a plurality of mounting positions are symmetrically formed in the two sides of the insulating resin framework, the magnetic conductive block is embedded in each mounting position, and a magnetic conductive clamping part is arranged on the side, away from the insulating resin framework, of each magnetic conductive block; insulating clamping parts are arranged on the two sides of the insulating resin framework, and the insulating clamping parts and the magnetic conduction clamping parts are embedded in the clamping grooves. According to the utility model, the side edge of the magnetic slot wedge assembly is provided with the insulation clamping part and the magnetic conduction clamping part which are inserted into the stator iron core and are used for fixing, so that the magnetic slot wedge assembly can be fixed on the notch of the stator iron core. The stator coil is convenient to install and the performance of the stator core is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor equipment field especially relates to a motor magnetic slot wedge structure. BACKGROUND

[0002] In order to improve motor performance, the slot opening is small in design, and bar embedding is difficult in the existing semi-closed slot motor. If the open slot type is used, the motor performance is not good without using magnetic slot wedge, and the best effect cannot be achieved using the whole magnetic slot wedge.

[0003] In order to improve the bar embedding efficiency, the open slot directly increases the tooth slot torque, which affects the motor performance. In order to improve the bar embedding efficiency without affecting the motor performance, a new type of magnetic slot wedge structure is designed, which can design the slot type into an open type to improve the production efficiency and realize the performance of the semi-closed slot motor. UTILITY MODEL CONTENTS

[0004] The utility model discloses a motor magnetic slot wedge structure that solves the problems in the prior art.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a motor magnetic slot wedge structure, comprising a stator core, a plurality of slot openings are formed on one side of the stator core, each slot opening is U-shaped, a clamping groove is formed on both sides of each slot opening, and a magnetic slot wedge assembly is embedded in the inner side of each clamping groove.

[0006] Each magnetic slot wedge assembly comprises an insulating resin framework and a magnetic block, a plurality of mounting positions are symmetrically formed on both sides of the insulating resin framework, a magnetic block is embedded in each mounting position, a magnetic clamping part is arranged on the side of each magnetic block away from the insulating resin framework, an insulating clamping part is arranged on both sides of the insulating resin framework, the cross sections of the insulating clamping part and the magnetic clamping part are the same, and the insulating clamping part and the magnetic clamping part are embedded in the clamping groove.

[0007] Further description of the above technical scheme:

[0008] The intersection of the extension lines of each magnetic slot wedge assembly close to each other is on the axis of the stator core.

[0009] Further description of the above technical scheme:

[0010] Each magnetic slot wedge assembly is perpendicular to the axis of the stator core.

[0011] Further description of the above technical scheme:

[0012] The stator core is wound with a stator coil, and the stator coil is wound on the side of the slot opening away from the opening.

[0013] As a further description of the above technical solutions:

[0014] The outer edges of the insulating clamping part and the magnetic conductive clamping part are matched with the inner edges of the clamping grooves, and the inner edges of the clamping grooves are in one of rectangular, triangular, circular or trapezoidal shapes, and the cross sections of the insulating clamping part and the magnetic conductive clamping part are in one of rectangular, triangular, circular or trapezoidal shapes.

[0015] As a further description of the above technical solutions:

[0016] Each of the magnetic conductive clamping part and the magnetic conductive block is electrically connected with the stator core.

[0017] The utility model has the advantages of the following:

[0018] In the utility model, the magnetic slot wedge assembly is composed of a slot wedge block made of a plurality of magnetic conductive blocks and a fixed framework of insulating resin made of non-magnetic material. The insulating clamping part and the magnetic conductive clamping part for fixation are arranged on the side of the magnetic slot wedge assembly and inserted into the stator core, so that the magnetic slot wedge assembly can be fixed on the slot opening of the stator core. The slot opening can be set as an open slot to facilitate the installation of the stator coil, and a closed slot opening can be formed on the stator core after the installation of the stator coil, so as to ensure the performance of the motor and the performance of the stator core. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective view of a motor magnetic slot wedge structure is provided for the utility model;

[0020] Figure 2 A perspective view of an insulating resin framework of a motor magnetic slot wedge structure is provided for the utility model;

[0021] Figure 3 A perspective view of a magnetic conductive block of a motor magnetic slot wedge structure is provided for the utility model;

[0022] Figure 4 A sectional view of a slot opening of a motor magnetic slot wedge structure is provided for the utility model;

[0023] Figure 5 A perspective view of a stator core of a motor magnetic slot wedge structure on which a magnetic slot wedge assembly is installed is provided for the utility model;

[0024] Figure 6 A Figure 4 An enlarged view of position A in the middle.

[0025] LEGEND:

[0026] 1, stator core;2, stator coil;3, slot;4, insulating resin skeleton;5, mounting position;6, insulating clamping portion;7, magnetic block;8, magnetic clamping portion;9, clamping groove;10, magnetic slot wedge assembly. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] Referring to Figures 1-6 An embodiment provided by the utility model: a motor magnetic slot wedge structure, comprising a stator core 1, a plurality of slots 3 are formed on one side of the stator core 1, each slot 3 is U-shaped, clamping grooves 9 are formed on both sides of the opening of each slot 3, and a magnetic slot wedge assembly 10 is embedded in the inner side of each clamping groove 9, the magnetic slot wedge assembly 10 can satisfy that the slot 3 is an open slot to facilitate the installation of a stator coil 2, and can also ensure that the stator coil 2 is installed and the magnetic slot wedge assembly 10 is installed as a closed slot after the stator coil 2 is installed, so that the performance of the motor and the stability of the coil fixation are ensured.

[0029] Each magnetic slot wedge assembly 10 comprises an insulating resin skeleton 4 and a magnetic block 7, a plurality of mounting positions 5 are symmetrically formed on both sides of the insulating resin skeleton 4, the insulating resin skeleton 4 is composed of resin, in actual processing, the magnetic block 7 can be arranged in a mold first, then the insulating resin is injected, and the insulating resin skeleton 4 and the magnetic block 7 are formed as a whole to form the magnetic slot wedge assembly 10, the magnetic block 7 is embedded in each mounting position 5, the magnetic clamping portion 8 is arranged on the side of each magnetic block 7 away from the insulating resin skeleton 4, the insulating clamping portion 6 is arranged on both sides of the insulating resin skeleton 4, the cross sections of the insulating clamping portion 6 and the magnetic clamping portion 8 are the same, the insulating clamping portion 6 and the magnetic clamping portion 8 are embedded in the clamping groove 9, when the mold is used to manufacture the insulating resin skeleton 4, the position of the insulating clamping portion 6 is left out, at the same time, the magnetic clamping portion 8 is manufactured when the magnetic block 7 is processed, the mold is injection molded to form the insulating clamping portion 6 and the magnetic clamping portion 8 as a whole, which is convenient for subsequent clamping with the clamping groove 9, the magnetic block 7 and the stator core 1 are made of the same material, so that the good performance of the motor is ensured.

[0030] The intersection of the extension lines of each magnetic slot wedge assembly 10 close to each other is on the axis of the stator core 1, so that the coaxiality of the motor components is high, and the magnetism meets the use of the motor.

[0031] Each magnetic slot wedge assembly 10 is perpendicular to the axis of the stator core 1, so that the magnetic field distribution of the stator core 1 is uniform.

[0032] The stator core 1 is wound with stator coils 2, the stator coils 2 are wound on the side away from the opening of the slot 3, and the stator coils 2 are used for power supply of motor operation.

[0033] The outer edges of the insulation clamping part 6 and the magnetic conductive clamping part 8 are matched with the inner edges of the corresponding clamping grooves 9, so as to facilitate stable clamping, the inner edges of the clamping grooves 9 are in one of rectangular, triangular, circular or trapezoidal shapes, and the cross sections of the insulation clamping part 6 and the magnetic conductive clamping part 8 are in one of rectangular, triangular, circular or trapezoidal shapes, various forms can flexibly meet the processing of the motor and meet the installation of different types of stator coils 2, and meanwhile, the performance stability of the motor can be ensured.

[0034] Each of the magnetic conductive clamping part 8 and the magnetic conductive block 7 is electrically connected with the stator core 1, so as to ensure that the stator core 1 has a uniform magnetic field and ensure the stable performance of the motor.

[0035] Working principle: in actual use, the magnetic slot wedge assembly 10 is composed of slot wedge blocks made of a plurality of magnetic conductive magnetic conductive blocks 7 and a fixed framework of an insulation resin framework 4 made of non-magnetic material. The magnetic slot wedge assembly 10 is provided with an insulation clamping part 6 and a magnetic conductive clamping part 8 for fixation inserted into the stator core 1, and the magnetic slot wedge assembly 10 can be fixed on the slot 3 of the stator core 1. The slot 3 can be set as an open slot to facilitate the installation of the stator coil 2, and after the stator coil 2 is installed, a closed slot 3 can be formed on the stator core 1, so as to ensure the performance of the motor and facilitate the installation of the stator coil 2.

[0036] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetic slot wedge structure of an electric machine comprising a stator core (1), characterized in that: The stator core (1) is provided with a plurality of notches (3) on one side, each of the notches (3) is U-shaped, and each of the notches (3) is provided with a clamping groove (9) on both sides of the opening, and each of the clamping grooves (9) is inlaid with a magnetic slot wedge assembly (10); Each of the magnetic slot wedge assemblies (10) comprises an insulating resin framework (4) and a magnetic block (7), a plurality of mounting positions (5) are symmetrically provided on both sides of the insulating resin framework (4), each of the mounting positions (5) is inlaid with a magnetic block (7), each of the magnetic blocks (7) is provided with a magnetic clamping portion (8) on the side away from the insulating resin framework (4), and the insulating resin framework (4) is provided with an insulating clamping portion (6) on both sides, the cross sections of the insulating clamping portion (6) and the magnetic clamping portion (8) are the same, and the insulating clamping portion (6) and the magnetic clamping portion (8) are inlaid in the clamping groove (9).

2. A magnetic slot wedge structure for an electrical machine as claimed in claim 1, wherein: The intersection of the extension lines of each of the magnetic slot wedge assemblies (10) is on the axis of the stator core (1).

3. A magnetic slot wedge structure for an electrical machine as claimed in claim 1, wherein: Each of the magnetic slot wedge assemblies (10) is perpendicular to the axis of the stator core (1).

4. A magnetic slot wedge structure for an electrical machine as claimed in claim 1, wherein: The stator core (1) is wound with a stator coil (2), and the stator coil (2) is wound on the side away from the opening of the notch (3).

5. A magnetic slot wedge structure for an electric machine as recited in claim 1, wherein: The outer edges of the insulating clamping portion (6) and the magnetic clamping portion (8) are matched with the inner edges of the corresponding clamping grooves (9), the inner edges of the clamping grooves (9) are one of a rectangle, a triangle, a circle or a trapezoid, and the cross sections of the insulating clamping portion (6) and the magnetic clamping portion (8) are one of a rectangle, a triangle, a circle or a trapezoid.

6. A magnetic slot wedge structure for an electrical machine as claimed in claim 1, wherein: Each of the magnetic clamping portions (8) and the magnetic blocks (7) is electrically connected with the stator core (1).

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