A motor winding support cradle

Abstract

The utility model discloses a motor winding support wire frame, including annular wire frame main part, be provided with a plurality of support arms on wire frame main part, form the wire slot cavity between two adjacent support arms, the end of every support arm is connected with limit tooth respectively, wire frame main part is equipped with annular side wall, and wire frame main part is provided with a plurality of limit block on the radial inboard of annular side wall, and limit block is located wire frame main part's axial outside side. The utility model provides technical scheme through setting up the locating block, and cooperation annular side wall forms the limit space, can carry out accurate constraint to the cross -slot enameled wire from one stator slot to another stator slot, avoids enameled wire displacement, loosening when motor operation.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor winding support frame. Background Technology

[0002] Motor windings are usually mounted on the stator core via an insulated wire frame (i.e., a winding support frame). The wire frame must simultaneously provide insulation, structural support, and position limiting for the windings. However, existing motor winding support frames have some shortcomings: (1) In distributed windings, the windings of the same phase are continuously wound in multiple stator slots. For the section of enameled wire of the same phase between one stator slot and another (or called "slot-crossing wire", "slot-crossing enameled wire", etc.), the existing winding support frames lack corresponding limiting structures and cannot effectively limit it. When the motor is running, the slot-crossing enameled wire is prone to displacement and loosening, which may not only damage the insulation layer of the enameled wire and cause a short circuit risk, but also change the magnetic field distribution of the windings, affecting the output torque and running stability of the motor. (2) The existing winding support frame lacks a limiting structure for the stator slot paper. It is necessary to assemble additional independent limiting components such as claws and baffles, which increases the number of parts and assembly time, increases production costs, and poses a risk of component falling off. If no additional limiting structure is set, the slot paper is prone to axial displacement or radial movement under the action of winding tension and motor vibration.

[0003] In view of the above technical problems, this utility model proposes a motor winding support frame, which has a simple structure and can effectively limit the cross-slot enameled wire, thereby improving the stability of motor operation. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a motor winding support frame, which aims to solve the technical problem that the winding support frame in the prior art lacks the ability to limit the enameled wire of the distributed winding across slots.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A motor winding support wire frame includes an annular wire frame body with multiple support arms on the wire frame body, forming a wire groove cavity between two adjacent support arms; each support arm is connected to a limiting tooth at its end; the wire frame body has an annular sidewall, and multiple limiting blocks are provided on the wire frame body corresponding to the radial inner side of the annular sidewall, with the limiting blocks located on the axial outer side of the wire frame body.

[0006] Furthermore, in the motor winding support frame, each limiting block extends to the axial outer side of the annular sidewall.

[0007] Furthermore, in the motor winding support frame, the distance between each limiting block and the annular sidewall is 1~2.5mm.

[0008] Furthermore, in the motor winding support frame, each limiting tooth is provided with a limiting groove at the corresponding wire slot cavity, and each limiting groove is connected to the corresponding wire slot cavity; each limiting groove is located on the axial inner side of the limiting tooth.

[0009] Furthermore, in the aforementioned motor winding support frame, multiple positioning posts are provided on the axial inner side of the frame body.

[0010] Furthermore, in the motor winding support frame, the end of each positioning post is tapered.

[0011] Furthermore, in the motor winding support frame, multiple pins are provided on the outer side of the frame body.

[0012] Furthermore, in the motor winding support frame, each pin is provided with a tapered end.

[0013] Beneficial effects: This utility model provides a motor winding support frame, which has at least the following advantages compared with the prior art: (1) By using the limiting block set on the radial inner side of the corresponding annular sidewall on the main body of the wire frame, a limiting space is formed with the annular sidewall, which can accurately constrain the cross-slot enameled wire from one stator slot to another stator slot, and prevent the enameled wire from shifting or loosening during motor operation.

[0014] (2) Furthermore, by setting a limiting groove that communicates with the groove cavity at the corresponding groove cavity of the limiting tooth, the inner edge of the groove paper can be inserted into the limiting groove, thereby achieving bidirectional positioning of the groove paper in both the axial and radial directions and preventing the groove paper from shifting during use.

[0015] (3) Furthermore, the tapered end positioning post on the inner side of the main body of the wire frame can be quickly aligned and assembled with the positioning hole of the stator core through the guiding effect of the tapered end, ensuring the installation accuracy and efficiency of the wire frame. Attached Figure Description

[0016] Figure 1 The three-dimensional motor winding support frame provided by this utility model Figure 1 .

[0017] Figure 2 for Figure 1 A magnified view of part A in the middle.

[0018] Figure 3 The three-dimensional motor winding support frame provided by this utility model Figure 2 .

[0019] Figure 4 for Figure 1 A magnified view of part B in the middle section.

[0020] Figure 5 The front view of the motor winding support frame provided by this utility model.

[0021] Figure 6 This is a rear view of the motor winding support frame provided by this utility model.

[0022] Figure 7 The left view of the motor winding support frame provided by this utility model.

[0023] Figure 8 This is a schematic diagram showing the limiting of the slotted paper by the motor winding support frame provided by this utility model.

[0024] Explanation of reference numerals in the attached figures: 1. Main body of the cable tray; 11. Annular sidewall; 2. Support arm; 20. Cable groove cavity; 3. Limiting teeth; 30. Limiting grooves; 4. Limiting block; 40. Limiting space; 5. Positioning post; 7. Pin; 71. Tapered end; 9. Gutter paper. Detailed Implementation

[0025] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0026] Please see Figures 1 to 7 This utility model provides a motor winding support frame. The accompanying drawings are for illustrative purposes only and are not intended to limit the actual product's dimensions or structural proportions. The term "multiple" as used herein refers to a quantity of two or more; however, since the exact number of structures referred to is not the inventive point, it is not specifically limited.

[0027] The axial direction mentioned in this article refers to the axial direction of the winding support frame. The inner side of the axial direction refers to the side of the winding support frame facing the stator core in practical applications. Figure 7 (Left side of the image). Axial outer side refers to: in practical applications, the side of the winding support frame furthest from the stator core (…). Figure 7 (The right side of the middle).

[0028] The motor winding support frame includes an annular frame body 1, with multiple support arms 2 on the frame body, and a wire groove cavity 20 formed between two adjacent support arms; each support arm is connected to a limiting tooth 3 at its end; the frame body 1 has an annular sidewall 11, and multiple limiting blocks 4 are provided on the frame body corresponding to the radial inner side of the annular sidewall, with the limiting blocks located on the axial outer side of the frame body.

[0029] In practical applications, the motor winding support frame is made of insulating material, for example, by injection molding of insulating plastic.

[0030] A slot cavity 20 for accommodating distributed windings is formed between two adjacent support arms. The number of slot cavities 20 is equal to and corresponds one-to-one with the number of slots in the motor stator core (not shown in the figure), and no specific limitation is made here.

[0031] When the distributed winding is wound, the cross-slot enameled wire (not shown in the figure) drawn from a slot cavity of the same phase winding can pass through the limiting space 40 formed between the corresponding limiting block and the annular sidewall (e.g., Figure 2 As shown in the figure, this achieves a radial limiting effect on the cross-groove enameled wire, ensuring that the radial displacement of the cross-groove enameled wire is within a controllable range under normal motor operation, thus preventing wear or large displacement of the enameled wire.

[0032] Furthermore, each limiting block 4 extends axially outward from the annular sidewall (e.g., Figure 7 (As shown). This protruding structure can provide more comprehensive constraint on the cross-groove enameled wire in the axial direction, preventing the enameled wire from sliding out of the limiting block due to axial displacement caused by vibration during motor operation, thus improving the limiting effect.

[0033] Furthermore, the distance between each limiting block 4 and the annular sidewall 11 is 1~2.5mm. This setting ensures that the enameled wire (whose diameter is typically 0.5mm~1.2mm) can be smoothly embedded between the limiting block and the annular sidewall, avoiding deformation of the enameled wire or damage to the insulation layer due to excessively small spacing; at the same time, it avoids loosening and displacement of the enameled wire due to excessively large spacing, so as to ensure the effectiveness of the limiting structure in constraining the enameled wire.

[0034] like Figure 4 and Figure 6 As shown, furthermore, each limiting tooth 3 is provided with a limiting groove 30 at the corresponding slot cavity, and each limiting groove 30 is connected to the corresponding slot cavity 20; each limiting groove is located on the axial inner side of the limiting tooth. This arrangement allows the edge of the stator slot paper to be embedded in the limiting groove (e.g., Figure 8 As shown in the diagram, the slotted paper is positioned using limiting slots to prevent it from shifting during assembly or motor operation. This eliminates the need for additional slotted paper limiting components, simplifying the structure and assembly process. In practical applications, one slotted paper is inserted into each slot of the stator core. The slotted paper serves as insulation and also prevents the enameled wire from being scratched due to direct friction with the stator core. It should be noted that inserting slotted paper into the stator core slots is a current technology, and the specific placement of the slotted paper in the stator core will not be described here. One slotted paper is schematically shown in the attached diagram for illustrative purposes.

[0035] like Figure 3 and Figure 7 As shown, furthermore, multiple positioning pins 5 are provided on the axial inner side of the main body of the wire frame. In practical applications, multiple positioning holes (not shown in the figure) are correspondingly provided on the stator core. During assembly, each positioning pin is simply inserted into the corresponding positioning hole.

[0036] Furthermore, the end of each positioning post 5 is tapered. The tapered end can guide the positioning post when it is assembled with the positioning hole of the stator core or matching component, reducing the difficulty of alignment.

[0037] Furthermore, multiple pins 7 are provided on the outer side of the main body of the wire frame. In practical applications, some motors may also have a PCB board (not shown in the figure), on which corresponding sockets are provided. The pins on the main body of the wire frame are inserted into the corresponding sockets on the PCB board, which can provide positioning and support for the PCB board.

[0038] Furthermore, each pin 7 is provided with a tapered end 71. The tapered end can be inserted into the socket on the PCB board more easily.

[0039] It should be noted that, for ease of understanding, this article mentions stator core and slot paper, but stator core and slot paper are not within the protection scope of this utility model.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and inventive concept of the present utility model, and all such modifications or substitutions should fall within the protection scope of the present utility model.

Claims

1. A motor winding support frame, comprising a ring-shaped frame body, characterized in that: The main body of the wire frame is provided with multiple support arms, and a wire groove cavity is formed between two adjacent support arms; each support arm is connected to a limiting tooth at its end; the main body of the wire frame is provided with an annular sidewall, and multiple limiting blocks are provided on the radial inner side of the annular sidewall on the main body of the wire frame, with the limiting blocks located on the axial outer side of the main body of the wire frame.

2. The motor winding support frame according to claim 1, characterized in that: Each limiting block extends axially to the outer side of the annular sidewall.

3. The motor winding support frame according to claim 1, characterized in that: The distance between each limiting block and the annular sidewall is 1~2.5mm.

4. The motor winding support frame according to claim 1, characterized in that: Each limiting tooth is provided with a limiting groove at the corresponding groove cavity, and each limiting groove is connected to the corresponding groove cavity; each limiting groove is located on the axial inner side of the limiting tooth.

5. The motor winding support frame according to claim 1, characterized in that: Multiple positioning posts are provided on the axial inner side of the main body of the wire frame.

6. The motor winding support frame according to claim 5, characterized in that: Each positioning post has a tapered end.

7. The motor winding support frame according to claim 1, characterized in that: Multiple pins are provided on the outside of the main body of the wire frame.

8. The motor winding support frame according to claim 7, characterized in that: Each pin has a tapered end.

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