Motor stator insulation end plate assembly

Abstract

The utility model discloses a motor stator insulation end plate assembly comprising an annular main body, the annular main body is provided with avoiding gaps corresponding to motor stator clamping grooves, and a first insulation part and a second insulation part are arranged between every two adjacent avoiding gaps. The first insulating part and the second insulating part respectively cover a connecting part between two adjacent clamping grooves on the motor stator and an arc-shaped part on the inner side of the motor stator; an outer side protection plate and an inner side protection plate are respectively arranged on the end surfaces of the annular main body and the second insulation part along the axial direction of the annular main body in a protruding manner; the insulating end plate assembly comprises a second insulating part and a receding notch, the two ends of the second insulating part extend towards the side where the receding notch is located to form protruding parts so as to form an anchor-shaped structure, and the two ends of the second insulating part extend towards the side where the receding notch is located to form an anchor-shaped structure. The coil wound in the avoiding notch is limited through the protruding part, and the coil is prevented from being disengaged outwards from the opening of the avoiding notch.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor components, and in particular relates to a motor stator insulation end plate component. Background Art

[0002] A motor consists of a stator and a rotor. In an excitation motor, the stator is wound with coils that generate a magnetic field when energized. However, the stator is constructed from multiple stacked, stamped silicon steel sheets, each with slots evenly distributed across the sheets. Traditionally, the stator is inserted into the slots with insulating paper, which then inserts the coils. However, the stator lacks protection at both ends, making it susceptible to scratching due to vibration or impact, potentially damaging the insulation on some of the coil wire diameters. Furthermore, the coils that extend beyond the stator's ends are also poorly protected and easily scratched by foreign objects during operation, compromising their electrical insulation. An insulating end plate assembly with application number 202322323304.9 comprises an annular main body, wherein the annular main body is provided with an avoidance notch corresponding to the motor stator slot, and a first insulating portion and a second insulating portion are provided between each two adjacent avoidance notches, wherein the first insulating portion and the second insulating portion respectively cover the connecting portion and the inner arc portion between the two adjacent slots on the motor stator; an outer protective plate and an inner protective plate are respectively provided on the end faces of the annular main body and the second insulating portion along the axial direction of the annular main body, thereby achieving insulation protection for the end portion of the motor stator; however, during the actual installation process, it is difficult to quickly position the insulating end plate. In addition, the coils wrapped around the stator cannot be effectively restricted, resulting in some coils falling out of the stator slots before the insulating paint is cured, which may damage the coils or affect the subsequent production, requiring additional personnel to reorganize the coils. Summary of the Invention

[0003] The utility model aims to provide a motor stator insulating end plate assembly, which is intended to solve the problems of rapid positioning of the insulating end plate and anti-dropping of the coil.

[0004] In order to solve the above technical problems, the purpose of this utility model is achieved as follows:

[0005] A motor stator insulating end plate assembly comprises an annular main body, the annular main body being provided with an avoidance notch corresponding to the motor stator slot, a first insulating portion and a second insulating portion being provided between each two adjacent avoidance notches, the first insulating portion and the second insulating portion respectively covering the connecting portion and the inner arc-shaped portion between the two adjacent slots on the motor stator; an outer protective plate and an inner protective plate are respectively protruded along the axial direction of the annular main body on the end faces of the annular main body and the second insulating portion; protrusions are extended at both ends of the second insulating portion toward the side where the avoidance notch is located to form an anchor-like structure.

[0006] On the basis of the above solution and as a preferred solution of the above solution: the avoidance gap corner is an arc transition.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: a protrusion is provided on the side of the annular body away from the outer protective plate and the inner protective plate and located at the edge of the avoidance gap; a receiving groove a is formed between two adjacent protrusions, and the connecting part can be embedded in the receiving groove a.

[0008] On the basis of the above solution and as a preferred solution of the above solution: a positioning column is provided on the annular body, and the positioning column is located between two adjacent avoidance gaps.

[0009] On the basis of the above solution and as a preferred solution of the above solution: three positioning posts are provided, and the angle between adjacent positioning posts is 120°.

[0010] On the basis of the above solution and as a preferred solution of the above solution: a plurality of notches are provided on the outer protective plate.

[0011] On the basis of the above solution and as a preferred solution of the above solution: the motor stator insulation end plate assembly is integrally injection molded.

[0012] On the basis of the above solution and as a preferred solution of the above solution: the motor stator insulation end plate assembly is made of nylon.

[0013] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: in addition to being able to provide an annular body, an avoidance gap corresponding to the motor stator slot and a first insulating part and a second insulating part are provided on the annular body, the first insulating part and the second insulating part respectively cover the connecting part and the inner arc part between the two adjacent slots on the motor stator, thereby achieving insulation protection for the end of the motor stator; protrusions are extended from both ends of the second insulating part to the side where the avoidance gap is located to form an anchor structure. When the insulating end plate assembly of the present application is installed on the electrode stator and the coil is wound, the coil wound in the avoidance gap is limited by the protrusion to prevent it from escaping from the opening of the avoidance gap; a positioning hole is opened on the motor stator, and during installation, the positioning column of the present application is inserted into the positioning hole to achieve rapid positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 This is a three-dimensional diagram of the overall structure of the utility model from another angle;

[0016] Figure 3 This is the main view of the overall structure of the utility model;

[0017] Figure 4 It is a top view of the overall structure of the utility model;

[0018] Figure 5 It is a bottom view of the overall structure of the utility model. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the given embodiments, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying 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 this application.

[0021] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0022] Combine Figure 1-5As shown, the present application discloses a motor stator insulating end plate assembly, comprising an annular main body 1, on which is provided an avoidance notch 103 corresponding to the motor stator slot, and a first insulating portion 101 and a second insulating portion 102 between each two adjacent avoidance notches 103, the first insulating portion 101 and the second insulating portion 102 respectively covering the connecting portion and the inner arc portion between the two adjacent slots on the motor stator; the first insulating portion 101 and the second insulating portion 102 respectively cover the connecting portion and the inner arc portion between the two adjacent slots on the motor stator, thereby achieving insulation protection for the motor stator end; and in order to protect the coil exposed outside the coil slot to prevent it from being scratched by foreign objects and destroying the insulation of the coil, in this embodiment, preferably, the end faces of the annular main body 1 and the second insulating portion 102 are respectively protruded along the axial direction of the annular main body 1 with an outer protective plate 2 and an inner protective plate 3, and the coil exposed outside the motor stator slot is protected by the outer protective plate and the inner protective plate. In order to prevent the coils from being scratched or the hands of maintenance or operators from being scratched, this embodiment preferably provides rounded corners on the corners of the outer protective plate 2 and the inner protective plate 3 to solve the problem of scratches. In addition, considering that the coils wrapped around the stator cannot be effectively restricted, some coils may fall out of the stator slots before the insulating paint is cured, which may damage the coils or affect the subsequent production, requiring additional personnel to sort the coils again. In this embodiment, protrusions 104 extend from both ends of the second insulating portion 102 to the side where the avoidance gap 103 is located to form an anchor-like structure. When the insulating end plate assembly of the present application is installed on the electrode stator and the coil is wound, the coils wound in the avoidance gap are limited by the protrusions to prevent them from falling out from the opening of the avoidance gap.

[0023] This embodiment preferably avoids the arc transition of the corner of the gap 103. In addition, a protrusion 4 is provided on the side of the annular body 1 away from the outer protective plate 2 and the inner protective plate 3, and at the edge of the avoidance gap 103; a receiving groove a is formed between two adjacent protrusions 4, and the connecting portion can be embedded in the receiving groove a. The connecting portion can be embedded in the receiving groove a, and the spacing of the protrusions 4 can be adjusted, thereby changing the width of the receiving groove a to be slightly smaller than the width of the connecting portion, so that the annular body 1 can be clamped on the connecting portion of the stator; it is preferred that the protrusion 4 is provided along the edge of the avoidance gap 103, and the outer contour of the protrusion 4 is controlled to be slightly smaller than the inner contour of the motor stator coil slot, so that the protrusion 4 can be clamped into the inner contour of the coil slot, thereby protecting the edge of the entire coil slot and preventing the coil from contacting the sharp edge of the coil slot and causing damage. At the same time, through the provision of the protrusion 4, after it is installed, the protrusion will be positioned with the coil slot, thereby solving the problem of movement of the insulating end plate assembly of the present application.

[0024] Of course, since the insulating end plates are fitted onto both end faces of the motor stator for assembly, in order to quickly position the insulating end plates and the motor stator, and thus achieve rapid assembly, this embodiment preferably provides positioning posts 105 on the annular body 1. Positioning posts 105 are located between two adjacent avoidance notches 103. It is further preferred that three positioning posts 105 are provided, with the angle between adjacent positioning posts 105 being 120°. This allows for rapid positioning and facilitates increased assembly speed.

[0025] Of course, considering that the stator winding coil will have wires leading out and connected to the terminals of the outer casing, in order to facilitate the leading out of the wires, in this embodiment, it is preferred that multiple notches 21 are opened on the outer protective plate 2 for the leading out of the wires, so that the outer protective plate 2 can still protect and safeguard the wires.

[0026] To facilitate production, the insulating end plates are preferably made of a polymer material (plastic) through integral injection molding. Of course, considering that the coils generate heat during operation, the insulating end plate assembly must have a certain temperature resistance. Therefore, in this embodiment, the insulating plate assembly is preferably made of nylon.

[0027] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor stator insulating end plate assembly, comprising an annular body (1), the annular body (1) being provided with a relief notch (103) corresponding to a motor stator slot, a first insulating portion (101) and a second insulating portion (102) being provided between each two adjacent relief notches (103), the first insulating portion (101) and the second insulating portion (102) respectively covering a connecting portion and an inner arc-shaped portion between two adjacent slots on the motor stator; an outer protective plate (2) and an inner protective plate (3) are respectively protruded along the axial direction of the annular body (1) on the end surfaces of the annular body (1) and the second insulating portion (102); the assembly is characterized in that: Both ends of the second insulating portion (102) are provided with protruding portions (104) extending toward the side where the avoidance notch (103) is located, so as to form an anchor-shaped structure.

2. The motor stator insulation end plate assembly according to claim 1, characterized in that: The avoidance gap (103) has a circular arc transition at the corner.

3. The motor stator insulation end plate assembly according to claim 2, characterized in that: A protrusion (4) is provided on the side of the annular body (1) away from the outer protective plate (2) and the inner protective plate (3), and located at the edge of the avoidance gap (103); a receiving groove (a) is formed between two adjacent protrusions (4), and the connecting portion can be embedded in the receiving groove (a).

4. The motor stator insulation end plate assembly according to claim 1, characterized in that: A positioning column (105) is provided on the annular body (1), and the positioning column (105) is located between two adjacent avoidance gaps (103).

5. The motor stator insulation end plate assembly according to claim 4, characterized in that: Three positioning columns (105) are provided, and the angle between adjacent positioning columns (105) is 120°.

6. The motor stator insulation end plate assembly according to claim 1, characterized in that: The outer protective plate (2) is provided with a plurality of notches (21).

7. The motor stator insulation end plate assembly according to claim 1, characterized in that: The motor stator insulation end plate assembly is integrally injection-molded.

8. The motor stator insulation end plate assembly according to claim 7, characterized in that: The motor stator insulation end plate assembly is made of nylon.

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