An insulating frame for an electric motor

Abstract

This utility model discloses an insulating frame for a motor, including a first frame unit and a second frame unit, both having the same shape. Each frame unit includes a circular frame body, with several evenly distributed isolation units on one side. Each isolation unit has a through slot near its center for the winding to pass through, and a clearance notch on its side away from the center. A male slot is formed between one side of the through slot and one side of the clearance notch, and a female slot is formed between the other side of the through slot and the other side of the clearance notch. The length of the male slot is the same as the length of the female slot. A protective plate extends upwards from the outer periphery of the frame body to protect the enameled wire. The isolation units of the first and second frame units are staggered by the clearance notch, improving installation efficiency. The identical shape of the first and second frame units reduces manufacturing costs.

Description

Technical Field

[0001] This utility model belongs to the field of electric motors, specifically an insulating frame for an electric motor. Background Technology

[0002] An electric motor consists of two main components: the stator and the rotor. The stator typically uses a frame to insulate the enameled wire from the stator core. Frames are usually used in pairs, consisting of an upper insulating frame and a lower insulating frame. Each frame includes a crossover plate, the frame body, a protective plate, and an isolation plate. The joint between a pair of frames is an interlocking structure to ensure reliable insulation.

[0003] The existing motor uses two different frames that are interlocked, requiring two sets of molds, which increases costs and necessitates controlling the compatibility of the two parts. Secondly, during the frame assembly process, the position of the interlocking structure needs to be adjusted to ensure assembly accuracy, affecting production efficiency. In addition, there is no wire protection plate on the outside of the frame's crossover plate, posing a risk of damage to the enameled wire. Summary of the Invention

[0004] This utility model addresses the aforementioned technical problems by providing an insulating frame for a motor. Two identical insulating frames are inserted one above the other to achieve insulation between the motor windings and the stator core, saving costs and improving installation efficiency.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an insulating frame for an electric motor, including a first frame unit and a second frame unit, the first frame unit and the second frame unit having the same shape; the first frame unit and the second frame unit each include a circular frame body, and a plurality of evenly distributed isolation units are provided on one side of the frame body; a through slot for the winding to pass through is provided on the side of the isolation unit near the center, and an avoidance notch is provided on the side of the isolation unit away from the center; a male pair slot is provided between one side of the through slot and one side of the avoidance notch, and a female pair slot is provided between the other side of the through slot and the other side of the avoidance notch, the length of the male pair slot being the same as the length of the female pair slot; a protective plate for protecting the enameled wire is provided extending upward from the outer periphery of the frame body.

[0006] To optimize the above technical solution, the present invention also includes the following improved technical solutions.

[0007] The first skeleton unit and the second skeleton unit are arranged opposite to each other. The isolation unit of the first skeleton unit and the isolation unit of the second skeleton unit are connected by insertion. The position of the male slot corresponds to the position of the female slot.

[0008] The other side of the aforementioned skeleton body is provided with several protective plates and crossover plates, and a gap for installing windings is provided between the protective plates and the crossover plates.

[0009] The connection between the aforementioned clearance notch and the outer wall of the female slot is provided with a first arc-shaped surface, and the end of the male slot is provided with a first mounting portion that mates with the first arc-shaped surface; the connection between the clearance notch and the inner wall of the male slot is provided with a second arc-shaped surface, and the end of the female slot is provided with a second mounting portion that mates with the second arc-shaped surface.

[0010] The thickness of the aforementioned isolation unit is the sum of the thickness of the male pair slot and the thickness of the female pair slot, wherein the thickness of the male pair slot is the same as the thickness of the female pair slot.

[0011] Compared with the prior art, the present invention provides an insulating frame for a motor. When the first frame unit and the second frame unit are inserted vertically, the isolation units of the first frame unit and the second frame unit are staggered by avoiding gaps, so that the male slots of the two isolation units can be connected with the female slots, thereby improving installation efficiency. The first frame unit and the second frame unit have the same shape, thereby reducing manufacturing costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0013] Figure 2 This is a three-dimensional structural diagram of this embodiment from another perspective.

[0014] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0016] Figures 1 to 3 The diagram shown is a structural schematic of this utility model.

[0017] The reference numerals in the attached drawings are as follows: skeleton body 1, isolation unit 2, through groove 2a, clearance notch 2b, male pair slot 2c, female pair slot 2d, first arc surface 2e, first mounting part 2f, second arc surface 2g, second mounting part 2h, wire guard plate 3, protection plate 4, and crossover plate 5.

[0018] This utility model discloses an insulating frame for a motor, comprising a first frame unit and a second frame unit, both having identical shapes. Each frame unit includes a circular frame body 1. The lower end of the frame body 1 has several evenly distributed isolation units 2. Each isolation unit 2 has a through groove 2a near its center and a clearance notch 2b away from its center. A male slot 2c is formed between one side of the through groove 2a and one side of the clearance notch 2b, and a female slot 2d is formed between the other side of the through groove 2a and the other side of the clearance notch 2b. The length of the male slot 2c is the same as the length of the female slot 2d. A protective plate 3 extends upwards from the outer periphery of the frame body 1 to protect the enameled wire.

[0019] The first and second frame units are arranged opposite each other. The male slot 2c of the first frame unit and the female slot 2d of the second frame unit are assembled together by interlocking, improving installation efficiency. During interlocking assembly, the clearance notches 2b of the two insulating frames abut each other. The isolation unit 2 of the first insulating frame and the isolation unit 2 of the second insulating frame are staggered through the clearance notches 2b. The male slot 2c of the first insulating frame mates with the female slot 2d of the second insulating frame, and the male slot 2c of the second insulating frame mates with the female slot 2d of the first insulating frame. Without the clearance notches 2b, the isolation unit 2 of the first insulating frame cannot be staggered with the isolation unit 2 of the second insulating frame, that is, interlocking assembly cannot be achieved.

[0020] The first and second frame units enclose the stator core. The frame body 1 and the isolation unit 2 are used to carry the windings and isolate the stator core from the windings. The upper end of the frame body 1 is provided with several protective plates 4 and crossover plates 5. The protective plates 4 are distributed on the inner circumference of the frame's ring, and the crossover plates 5 are located inside the protective plates 3, leaving a certain gap between them. The protective plates 4 and the crossover plates 5 neatly hold the windings between them, preventing the enameled wire from unraveling and being damaged. After the winding in one isolation unit 2 is completed, the enameled wire needs to be led out, crossed over the crossover plate 5, and passed through the gap between the crossover plate 5 and the protective plate 3 to continue winding in the next isolation unit 2. The protective plates 3 can reduce damage to the enameled wire and extend the motor's service life.

[0021] like Figure 3 As shown, a first arc-shaped surface 2e is formed at the connection between the clearance notch 2b and the outer wall of the female slot 2d, and a first mounting portion 2f that mates with the first arc-shaped surface 2e is formed at the end of the male slot 2c. A second arc-shaped surface 2g is formed at the connection between the clearance notch 2b and the inner wall of the male slot 2c, and a second mounting portion 2h that mates with the second arc-shaped surface 2g is formed at the end of the female slot 2d.

[0022] The thickness of the isolation unit 2 is the sum of the thickness of the male connector 2c and the thickness of the female connector 2d, wherein the thickness of the male connector 2c is the same as the thickness of the female connector 2d. In this embodiment, the thickness of the isolation unit 2 is 0.6mm, and the thicknesses of the male connector 2c and the female connector 2d are both 0.3mm. The appropriate size can be selected according to the actual application requirements.

[0023] The preferred embodiment of this utility model has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of this utility model.

Claims

1. An insulating framework of an electric machine comprising a first framework unit and a second framework unit, characterized in that: The first skeleton unit and the second skeleton unit have the same shape; the first skeleton unit and the second skeleton unit each include a circular skeleton body (1), and a plurality of evenly distributed isolation units (2) are provided on one side of the skeleton body (1); the isolation unit (2) has a through groove (2a) for the winding to pass through on the side near the center, and a clearance notch (2b) is provided on the side away from the center of the isolation unit (2); a male slot (2c) is provided between one side of the through groove (2a) and one side of the clearance notch (2b), and a female slot (2d) is provided between the other side of the through groove (2a) and the other side of the clearance notch (2b); the length of the male slot (2c) is the same as the length of the female slot (2d); a protective plate (3) for protecting the enameled wire is provided around the outer periphery of the skeleton body (1).

2. The insulating frame for an electric motor according to claim 1, characterized in that: The first skeleton unit and the second skeleton unit are arranged opposite to each other. The isolation unit (2) of the first skeleton unit and the isolation unit (2) of the second skeleton unit are connected by insertion. The position of the male slot (2c) corresponds to the position of the female slot (2d).

3. The insulating frame for an electric motor according to claim 2, characterized in that: The other side of the skeleton body (1) is provided with several protective plates (4) and cross-line plates (5), and a gap for installing windings is provided between the protective plates (4) and the cross-line plates (5).

4. The insulating frame for an electric motor according to claim 3, characterized in that: A first arc-shaped surface (2e) is formed at the connection between the clearance notch (2b) and the outer wall of the female slot (2d), and a first mounting portion (2f) is formed at the end of the male slot (2c) to cooperate with the first arc-shaped surface (2e); a second arc-shaped surface (2g) is formed at the connection between the clearance notch (2b) and the inner wall of the male slot (2c), and a second mounting portion (2h) is formed at the end of the female slot (2d) to cooperate with the second arc-shaped surface (2g).

5. The insulating frame for an electric motor according to claim 4, characterized in that: The thickness of the isolation unit (2) is the sum of the thickness of the male pair slot (2c) and the thickness of the female pair slot (2d), wherein the thickness of the male pair slot (2c) is the same as the thickness of the female pair slot (2d).

Images