Motor stator and motor

Abstract

The utility model relates to the technical field of motors, and discloses a motor stator and a motor, the motor stator comprises a skeleton and a tooth part iron core, the skeleton is sleeved on a tooth part unit of the tooth part iron core; the inner wall of the framework is connected with the side wall of the tooth part unit through a groove and a bulge which are matched with each other, so that the tooth part unit is prevented from moving relative to the framework. According to the motor stator and the motor provided by the utility model, the inner wall of the framework is connected with the side wall of the tooth part unit through the groove and the bulge which are matched with each other, so that the tooth part unit is prevented from moving relative to the framework. Therefore, the tooth part units of the stator core are limited through the framework, the movement of the stator teeth is avoided, and the reliability of the motor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor stator and a motor. Background Art

[0002] The existing tooth yoke type stator core structure is assembled with the tooth part and the frame as shown in the figure. Figure 1 , 2 As shown, the tooth portion 100 and the yoke portion 200 of the two solutions are a full circle, which is convenient for assembly. However, both solutions need to ensure an interference fit (at least a transition fit) between the tooth portion 100 and the yoke portion 200.

[0003] However, due to the magnetic circuit and winding requirements, the interaction force between two adjacent teeth of the stator core is very small. When the motor is working, the tooth unit of the tooth core will move relative to the frame (such as Figure 3 As shown), it will eventually affect the reliability of the motor. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a motor stator and a motor, which limit the tooth unit of the stator core through a skeleton to avoid the movement of the stator teeth and ensure the reliability of the motor.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A motor stator comprises a frame and a tooth core, wherein the frame is sleeved on a tooth unit of the tooth core;

[0007] The inner wall of the frame and the side wall of the tooth unit are connected via matching grooves and protrusions to prevent the tooth unit from moving relative to the frame.

[0008] Preferably, the protrusions are arranged on the inner wall of the frame, and the grooves are arranged on the side walls of the tooth unit, and the positions of the protrusions and the grooves correspond one to one.

[0009] Preferably, the protrusion is arranged on the side wall of the tooth unit, and the groove is arranged on the inner wall of the frame, and the positions of the protrusion and the groove correspond one to one.

[0010] Preferably, the protrusions are arranged on two inner side walls of the framework surrounding the tooth unit, or the protrusions are arranged on two side walls of the tooth unit.

[0011] Preferably, the protrusion is arranged on the top surface or the bottom surface of the framework surrounding the tooth unit, or the protrusion is arranged on the top surface or the bottom surface of the tooth unit.

[0012] Preferably, the tooth unit is a radially symmetrical structure, and the grooves and the protrusions each include two groups, the two groups of grooves and the protrusions are symmetrically arranged about the radial symmetry axis of the tooth unit, and each group of grooves includes a plurality of groove units, and each group of protrusions includes a plurality of protrusion units.

[0013] Preferably, the tooth unit is an axially symmetrical structure, and the grooves and the protrusions each include two groups, the two groups of grooves and the protrusions are symmetrically arranged about the axial symmetry axis of the tooth unit, and each group of grooves includes a plurality of groove units, and each group of protrusions includes a plurality of protrusion units.

[0014] Preferably, the groove unit is a hemisphere, and its diameter is d1, and the width of the tooth unit is W, d1 = (0.06-0.07) W;

[0015] The protrusion unit is a hemisphere, and its diameter is d2. The width of the tooth unit is W, d2=(0.06-0.07)W.

[0016] Preferably, there are multiple protrusions on each side wall, and the multiple protrusions are spiral in the height direction.

[0017] Preferably, a winding groove is provided on the frame corresponding to the tooth unit, and the bottom wall of the winding groove is provided with at least one group of wire embedding grooves, each group of the wire embedding grooves includes a plurality of wire embedding groove units, and the plurality of the wire embedding grooves are spiral in the height direction of the frame.

[0018] A motor comprises the motor stator mentioned above.

[0019] Compared with the prior art, the motor stator and motor of the utility model embodiment have the following beneficial effects: the inner wall of the frame and the side wall of the tooth unit are connected by matching grooves and protrusions to prevent the tooth unit from moving relative to the frame. Thus, the tooth unit of the stator core is limited by the frame, the movement of the stator teeth is avoided, and the reliability of the motor is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is an assembly diagram of the teeth and frame of an existing tooth yoke type stator core structure.

[0021] Figure 2 This is an assembly diagram of the teeth and frame of another existing tooth yoke type stator core structure.

[0022] Figure 3 for Figure 1 or Figure 2 sectional view of .

[0023] Figure 4It is an exploded view of the connection between the tooth core and the insulating frame of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the motor stator of the utility model.

[0025] Figure 6 It is a schematic diagram of the structure in which the protrusion of the utility model is arranged on the frame.

[0026] Figure 7 This is a schematic diagram of the structure in which the protrusion of the utility model is arranged on the tooth unit.

[0027] Figure 8 It is a schematic diagram of the structure of the winding grooves arranged on the frame of the utility model.

[0028] Among them: 1-skeleton, 2-tooth unit, 3-protrusion, 4-groove, 5-tooth core, 6-yoke core, 7-winding groove, 100-tooth, 200-yoke, 300-skeleton, 400-tooth unit. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 4-5 As shown, a motor stator of a preferred embodiment of the utility model embodiment includes a frame 1 and a tooth core 5, the frame 1 is sleeved on the tooth unit 2 of the tooth core 5, and the insulating frame 1 is fixedly connected to the yoke core 6.

[0034] like Figure 6-8 As shown, the inner wall of the frame 1 and the side wall of the tooth unit 2 are connected through matching grooves 4 and protrusions 3 to prevent the tooth unit 2 from moving relative to the frame 1. Preferably, there are multiple protrusions 3 on each side wall, and the multiple protrusions 3 are spiral in the height direction. By connecting multiple protrusions 3 to multiple grooves 4, the connection strength can be ensured.

[0035] The motor stator based on the above characteristics is connected between the inner wall of the frame 1 and the side wall of the tooth unit 2 through the matching groove 4 and the protrusion 3 to prevent the tooth unit 2 from moving relative to the frame 1. Thus, the tooth unit 2 of the stator core is limited by the frame 1, the movement of the stator teeth is avoided, and the reliability of the motor is ensured.

[0036] Specifically, the protrusion 3 may be disposed on the inner wall of the frame 1 or on the side wall of the tooth unit 2. The two cases are described below respectively.

[0037] At the same time, for the sake of clear description, the present invention is Figure 4 The left and right sides of the insulating frame 1 surrounding the tooth unit 2 are two sides, the upper end is the top surface, and the lower end is the bottom surface.

[0038] When the protrusion 3 is arranged on the inner wall of the frame 1, the groove 4 is arranged on the side wall of the tooth unit 2, and the protrusion 3 corresponds to the groove 4 in one-to-one position. In this case, the protrusion 3 has two arrangement modes, namely:

[0039] The protrusions 3 are disposed on two inner side walls of the frame 1 surrounding the tooth unit 2 , or the protrusions 3 are disposed on a top surface or a bottom surface of the frame 1 surrounding the tooth unit 2 .

[0040] When the protrusion 3 is arranged on the top surface or the bottom surface of the frame 1 , it can be arranged on both the top surface and the bottom surface, or it can be arranged only on the top surface of the frame 1 or only on the bottom surface of the frame 1 .

[0041] When the protrusion 3 is arranged on the side wall of the tooth unit 2, the groove 4 is arranged on the inner wall of the frame 1, and the protrusion 3 corresponds to the groove 4 in one-to-one position. In this case, the protrusion 3 also has two arrangement modes, namely:

[0042] The protrusions 3 are disposed on two side walls of the tooth unit 2 or the protrusions 3 are disposed on the top surface or the bottom surface of the tooth unit 2 .

[0043] In this embodiment, no matter the protrusions 3 are arranged on the two inner side walls of the skeleton 1 surrounding the tooth unit 2, or the protrusions 3 are arranged on the two side walls of the tooth unit 2. The tooth unit 2 is a radially symmetrical structure, and the grooves 4 and the protrusions 3 each include two groups, and the two groups of the grooves 4 and the protrusions 3 are symmetrically arranged about the radial symmetry axis of the tooth unit 2, and each group of the grooves 4 includes a plurality of groove units, and each group of the protrusions 3 includes a plurality of protrusion units, and the groove units correspond to the protrusion units one by one. Not only can the force on both sides of the tooth unit 2 be uniform, but also the connection strength between the skeleton 1 and the tooth is guaranteed.

[0044] In addition, the tooth unit 2 is also an axially symmetrical structure, and the grooves 4 and the protrusions 3 each include two groups, and the two groups of grooves 4 and the protrusions 3 are symmetrically arranged about the axial symmetry axis of the tooth unit 2, and each group of grooves 4 includes a plurality of groove units, and each group of protrusions includes a plurality of protrusion units.

[0045] In this embodiment, the groove unit is a hemisphere, and its diameter is d1, and the width of the tooth unit is W, d1 = (0.06-0.07) W, such as d1 = 0.065W;

[0046] The protrusion unit is a hemisphere, and its diameter is d2. The width of the tooth unit is W, d2=(0.06-0.07)W, such as d2=0.065W.

[0047] like Figure 8 As shown, in another embodiment of the utility model, the frame 1 is provided with a winding groove 7 corresponding to the tooth unit 2, and the bottom wall of the winding groove 7 is provided with at least one group of wire embedding grooves, each group of the wire embedding grooves includes a plurality of wire embedding groove units, and the plurality of the wire embedding grooves are spiral in the height direction of the frame 1. By providing the winding grooves, the motor winding can be guided to improve the winding efficiency and accuracy.

[0048] In order to solve the above technical problem, this embodiment further provides a motor, which includes the above motor stator.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A motor stator, characterized in that: It comprises a frame and a tooth core, wherein the frame is sleeved on the tooth unit of the tooth core; The inner wall of the frame and the side wall of the tooth unit are connected via matching grooves and protrusions to prevent the tooth unit from moving relative to the frame.

2. The motor stator according to claim 1, characterized in that: The protrusions are arranged on the inner wall of the frame, and the grooves are arranged on the side walls of the tooth unit, and the positions of the protrusions and the grooves correspond one to one.

3. The motor stator according to claim 1, characterized in that: The protrusion is arranged on the side wall of the tooth unit, and the groove is arranged on the inner wall of the frame, and the protrusion and the groove have a one-to-one correspondence in position.

4. The motor stator according to claim 2 or 3, characterized in that: The protrusions are arranged on two inner side walls of the frame surrounding the tooth unit, or the protrusions are arranged on two side walls of the tooth unit.

5. The motor stator according to claim 2 or 3, characterized in that: The protrusion is arranged on a top surface or a bottom surface of the framework surrounding the tooth unit, or the protrusion is arranged on a top surface or a bottom surface of the tooth unit.

6. The motor stator according to claim 4, characterized in that: The tooth unit is a radially symmetrical structure, and the grooves and protrusions each include two groups. The two groups of grooves and protrusions are symmetrically arranged about the radial symmetry axis of the tooth unit, and each group of grooves includes a plurality of groove units, and each group of protrusions includes a plurality of protrusion units.

7. The motor stator according to claim 5, characterized in that: The tooth unit is an axially symmetrical structure, and the grooves and protrusions each include two groups, the two groups of grooves and protrusions are symmetrically arranged about the axial symmetry axis of the tooth unit, and each group of grooves includes a plurality of groove units, and each group of protrusions includes a plurality of protrusion units.

8. The motor stator according to claim 6 or 7, characterized in that: The groove unit is a hemisphere, and its diameter is d1, and the width of the tooth unit is W, d1 = (0.06-0.07) W; The protrusion unit is a hemisphere, and its diameter is d2. The width of the tooth unit is W, d2=(0.06-0.07)W.

9. The motor stator according to claim 1, characterized in that: There are multiple protrusions on each side wall, and the multiple protrusions are spiral in the height direction.

10. The motor stator according to claim 8, characterized in that: The frame is provided with a winding groove corresponding to the tooth unit, and the bottom wall of the winding groove is provided with at least one group of wire embedding grooves, each group of the wire embedding grooves includes a plurality of wire embedding groove units, and the plurality of the wire embedding grooves are spiral in the height direction of the frame.

11. A motor, characterized in that: The motor stator comprises any one of claims 1-10.

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