Insulation framework assembly for pump motor

Abstract

The utility model belongs to the technical field of pumps, and provides a pump motor insulation framework assembly which comprises a stator iron core, the stator iron core is provided with insulation tooth portions and stator grooves, and insulation paper is arranged in the stator grooves. Two groups of paper blocking grooves are formed in the side wall of one side, close to the stator groove, of the insulating tooth part, and openings of the paper blocking grooves are oppositely arranged up and down; each paper blocking groove comprises a groove opening part, the groove bottoms of the groove opening parts of the two paper blocking grooves are spaced by a first preset distance in the axial direction of the stator iron core, and the difference value range between the first preset distance and the length of the insulation paper is 0-4 mm. The height of the insulation paper is 2-4 mm greater than the height of the stator core.

Description

Technical Field

[0001] The utility model belongs to the technical field of pumps, and in particular relates to an insulating frame assembly of a motor for a pump. Background Art

[0002] The insulation frame of the motor supports and fixes the insulation paper in the motor. The motor insulation paper needs to be inserted into the stator core slot so that the insulation paper separates the enameled wire and the core to play an insulating role.

[0003] In the prior art, after the insulating paper with a thickness of 0.2mm-0.5mm is inserted into the iron core, it is fixed by thermoforming. This fixing method is not firm and the insulating paper is easy to move. When the winding machine is winding, if the winding speed is too fast, the winding nozzle will roll the insulating paper into the winding wire package, which will cause the comprehensive detection performance of the motor to fail to meet the standards. This method has certain risks, will result in non-compliance with safety regulations, and has low production efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an insulating skeleton assembly for a pump motor to solve the problem of the insulating paper moving up and down during the motor winding process. The insulating paper fixing and installation process is simple and quick, and has strong stability, and there is no problem of not meeting the requirements of safety regulations.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] An insulating skeleton assembly of a pump motor comprises a stator core, wherein the stator core is provided with insulating teeth and stator slots, and insulating paper is provided in the stator slots;

[0007] Two sets of paper stop grooves are arranged on the side wall of the insulating tooth portion close to the stator slot, and the openings of the paper stop grooves are arranged opposite to each other up and down;

[0008] The paper retaining groove comprises a notch portion, and the bottoms of the notch portions of the two groups of paper retaining grooves are spaced apart by a first preset distance along the axial direction of the stator core, and the difference between the first preset distance and the length of the insulating paper is in the range of 0-4 mm;

[0009] The height of the insulating paper is 2 mm to 4 mm greater than the height of the stator core.

[0010] Preferably, the radial cross-section of the notch portion is a square notch, and the depth of the square notch ranges from 0.5 mm to 2 mm.

[0011] Preferably, the width of the square notch is in the range of 0.4 mm to 1 mm.

[0012] Preferably, the difference between the width of the square notch and the thickness of the insulating paper is in the range of 0.05 mm to 1 mm.

[0013] Preferably, the paper blocking groove further includes an inclined portion, one end of the inclined portion is connected to the edge of the notch portion, and the other end of the inclined portion extends toward the inner side of the stator slot.

[0014] Preferably, the inclined portion and the paper blocking groove are connected via a first arc surface, and the fillet radius of the first arc surface is in the range of 0.2 mm-0.4 mm.

[0015] Preferably, a plane is connected to the lower edge of the inclined portion.

[0016] Preferably, a side of the inclined portion close to the side wall of the stator slot is an arc-shaped surface.

[0017] Preferably, a groove is provided on the inner wall of the stator slot, the insulating paper is arranged in the groove, and the axial distance between the groove and the length of the insulating paper is in the range of 0-4 mm.

[0018] Preferably, the difference between the depth of the groove and the thickness of the insulating paper is in the range of 0-0.2 mm.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model uses a paper stop groove on the insulating tooth part. After installation, the two ends of the insulating paper are installed in the notch part, and the insulating paper is supported by the notch part to prevent the insulating paper from changing its position during the winding process. The insulating paper can be fixed by inserting the two ends into the notch part. The installation process is simple and fast, the stability is strong, and there is no safety problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the first angle of the insulation skeleton assembly of the pump motor in the utility model;

[0022] Figure 2 For the utility model Figure 1 A magnified view of the structure at A;

[0023] Figure 3 It is a structural schematic diagram of a second angle of the insulating skeleton assembly of the pump motor in the utility model;

[0024] Figure 4 For the utility model Figure 3 A magnified view of the structure at B;

[0025] Figure 5It is a structural schematic diagram of the third angle of the insulation skeleton assembly of the pump motor in the utility model.

[0026] Among them, 2, insulating tooth portion; 3, stator slot; 4, insulating paper; 5, paper stop slot; 51, notch portion; 52, inclined portion; 53, first arc surface; 54, plane; 55, arc surface; 6, groove; 7, third arc surface. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] like Figure 1-Figure 5 As shown, in this embodiment, an insulating skeleton assembly of a pump motor is provided, including a stator core, on which an insulating tooth portion 2 and a stator slot 3 are arranged, and insulated paper 4 is arranged in the stator slot 3;

[0035] Two sets of paper stop grooves 5 are arranged on the side wall of the insulating tooth portion 2 close to the stator slot 3, and the openings of the paper stop grooves 5 are arranged opposite to each other up and down;

[0036] The paper stop groove 5 includes a notch portion 51, and the bottoms of the notch portions 51 of the two groups of paper stop grooves 5 are spaced apart by a first preset distance along the axial direction of the stator core. The difference between the first preset distance and the length of the insulating paper 4 is in the range of 0-4mm, so as to ensure that after the insulating paper 4 is installed, there is a certain gap in the paper stop groove 5, so that the insulating paper 4 can be smoothly placed in the paper stop groove 5, and the processing error of the paper stop groove 5 and the size error of the insulating paper 4 can also be compensated.

[0037] The height of the insulating paper 4 is 2 mm to 4 mm greater than the height of the stator core. After the enameled wire is wound, the height of the insulating paper 4 is higher than the height of the core, and the insulating paper 4 plays an insulating and protective role.

[0038] In this embodiment, by opening a paper stop groove 5 on the insulating tooth portion 2, after installation, the two ends of the insulating paper 4 are installed in the notch portion 51, and the insulating paper 4 is supported by the notch portion 51 to prevent the insulating paper 4 from changing its position during the winding process. And the insulating paper 4 can be fixed by simply inserting the two ends into the notch portion 51, the installation process is simple and fast, the stability is strong, and there is no safety problem.

[0039] Preferably, the radial cross section of the notch portion 51 is a square notch, and the depth of the square notch ranges from 0.5 mm to 2 mm. This arrangement can limit the axial movement of the insulating paper 4 along the stator core.

[0040] Preferably, the width of the square notch is in the range of 0.4 mm to 1 mm, so as to limit the radial movement of the paper stop slot 5 along the stator core.

[0041] Preferably, the difference between the width of the square notch and the thickness of the insulating paper 4 is in the range of 0.05 mm to 1 mm, so as to ensure that the insulating paper 4 does not get stuck in the square notch and compensate for the thickness error of the insulating paper 4 .

[0042] Preferably, the paper stop groove 5 further includes an inclined portion 52, one end of the inclined portion 52 is connected to the edge of the notch portion 51, and the other end of the inclined portion 52 extends toward the inner side of the stator slot 3. The inclined portion 52 is provided to facilitate the insertion of the two ends of the insulating paper 4 into the notch portion 51. Preferably, the inclined portion 52 is connected to the inner edge of the square notch.

[0043] Preferably, the inclined portion 52 and the paper blocking groove 5 are connected via a first arc surface 53 so that the insulating paper 4 can be smoothly inserted into the notch portion 51 , and the fillet radius of the first arc surface 53 is in the range of 0.2 mm-0.4 mm.

[0044] Preferably, a plane 54 is connected to the lower edge of the inclined portion 52 , and the plane 54 is arranged at the edge of the inclined portion 52 so that the inclined portion 52 has a certain thickness, so as to facilitate processing of the inclined portion 52 .

[0045] Preferably, one side of the inclined portion 52 close to the side wall of the stator slot 3 is an arc surface 55. When winding, the arc surface 55 is provided to arrange the enameled wire wound on the insulating tooth portion 2 neatly, and the arc surface 55 is provided without position interference with the enameled wire.

[0046] Preferably, if Figure 5 As shown, a groove 6 is provided on the inner wall of the stator slot 3, and the insulating paper 4 is arranged in the groove 6. The axial distance between the groove 6 and the length of the insulating paper 4 is in the range of 0-4 mm. After being placed, the insulating paper 4 is located in the groove 6. The groove 6 provides support for the insulating paper 4, and the insulating paper 4 will not be suspended. When winding, the wire nozzle will not touch the insulating paper 4 during the up and down movement, and will not damage the insulating paper 4.

[0047] Preferably, the difference between the depth of the groove 6 and the thickness of the insulating paper 4 is in the range of 0-0.2 mm, ensuring that the insulating paper 4 is substantially flush with the inner wall of the stator slot 3 after being placed in the groove 6, and that the insulating paper 4 contacts the enameled wire after winding, ensuring that the position of the insulating paper 4 does not change. Figure 5 As shown, after the insulating paper 4 is placed in the groove 6 , it is flush with the I surface, II surface and III surface of the stator slot 3 .

[0048] Preferably, the side edges of the opening of the insulating tooth portion 2 are transitionally connected by the third arc surface 7 to ensure that the insulating paper 4 covers the opening of the insulating tooth portion 2 and the insulating paper 4 will not be damaged.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A pump motor insulation skeleton assembly, characterized in that: It comprises a stator core, on which an insulating tooth portion (2) and a stator slot (3) are arranged, and insulated paper (4) is arranged in the stator slot (3); Two groups of paper stop grooves (5) are arranged on the side wall of the insulating tooth portion (2) close to the stator slot (3), and the openings of the paper stop grooves (5) are arranged opposite to each other up and down; The paper retaining groove (5) comprises a notch portion (51), the groove bottoms of the notch portions (51) of the two groups of paper retaining grooves (5) are spaced apart by a first preset distance along the axial direction of the stator core, and the difference between the first preset distance and the length of the insulating paper (4) is in the range of 0-4 mm; The height of the insulating paper (4) is 2 mm to 4 mm greater than the height of the stator core.

2. The pump motor insulation skeleton assembly according to claim 1, characterized in that: The radial cross section of the notch portion (51) is a square notch, and the depth of the square notch ranges from 0.5 mm to 2 mm.

3. The pump motor insulation skeleton assembly according to claim 2, characterized in that: The width of the square notch ranges from 0.4 mm to 1 mm.

4. The pump motor insulation skeleton assembly according to claim 2, characterized in that: The difference between the width of the square notch and the thickness of the insulating paper (4) is in the range of 0.05 mm to 1 mm.

5. The pump motor insulation skeleton assembly according to any one of claims 1 to 4, characterized in that: The paper blocking groove (5) further comprises an inclined portion (52), one end of the inclined portion (52) being connected to the edge of the slot portion (51), and the other end of the inclined portion (52) extending toward the inner side of the stator slot (3).

6. The pump motor insulation skeleton assembly according to claim 5, characterized in that: The inclined portion (52) and the paper blocking groove (5) are connected via a first arc surface (53), and the fillet radius of the first arc surface (53) is in the range of 0.2 mm to 0.4 mm.

7. The pump motor insulation skeleton assembly according to claim 6, characterized in that: The lower edge of the inclined portion (52) is connected to a flat surface (54).

8. The pump motor insulation skeleton assembly according to claim 7, characterized in that: A side of the inclined portion (52) close to the side wall of the stator slot (3) is an arc-shaped surface (55).

9. The pump motor insulation skeleton assembly according to any one of claims 1 to 4, characterized in that: A groove (6) is provided on the inner wall of the stator slot (3), the insulating paper (4) is arranged in the groove (6), and the axial distance between the groove (6) and the length of the insulating paper (4) is in the range of 0-4 mm.

10. The pump motor insulation skeleton assembly according to claim 9, characterized in that: The difference between the depth of the groove (6) and the thickness of the insulating paper (4) is in the range of 0-0.2 mm.

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