Coil holder of U-shaped synchronous motor and stator assembly with coil holder

Abstract

The utility model discloses a coil holder of a U-shaped synchronous motor and a stator assembly with the coil holder, the coil holder comprises a first coil holder main body and a second coil holder main body, the first coil holder main body and the second coil holder main body are symmetrically arranged, and the first coil holder main body and the second coil holder main body are rotatably connected through an adhesion part, so that the coil holder is an integrated piece; the stator assembly comprises a winding and a stator core; the stator core is U-shaped; the stator core comprises a base part, a first arm part and a second arm part. Compared with the prior art, the winding efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of electric motors, specifically to a wire frame for a U-shaped synchronous motor and a stator assembly having the wire frame. Background Technology

[0002] The motor's winding frame primarily serves as support and insulation. Currently, the U-shaped synchronous motor winding frames used in mass production on the market mainly adopt a split structure, with the two coils wound on two separate winding frames. This results in defects such as low coil winding efficiency, insufficient safety clearance, and low slot fill factor. Insufficient safety clearance limits the slot fill factor of traditional split-frame stators. In existing technology, the split-structure winding frames used in mass production in the industry generally add a layer of composite insulating paper between the winding frame gaps and the iron core to meet safety insulation requirements.

[0003] For example, Chinese utility model patent No. 201921943031.5 (authorization announcement No. CN210468929U) discloses a U-shaped synchronous motor. This motor includes a U-shaped stator, an integrated rotor, end covers, and transmission gears. The U-shaped stator is equipped with a winding frame, coils, and terminals. The motor has two winding frames located at the bottom of the U-shaped stator, and coils are wound around the outer perimeter of the winding frames. During installation, this motor requires an additional insulating sheet to meet insulation requirements, and the coils need to be wound separately on two winding frames, resulting in low coil winding efficiency. Utility Model Content

[0004] The first technical problem to be solved by this utility model is to provide a winding frame for a U-shaped synchronous motor with high winding efficiency, in light of the above-mentioned technical status quo.

[0005] The second technical problem to be solved by this utility model is to provide a stator assembly with a U-shaped synchronous motor frame, which has high winding efficiency, in view of the above-mentioned technical status.

[0006] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a wire frame for a U-shaped synchronous motor, comprising a first wire frame body and a second wire frame body, characterized in that: the first wire frame body and the second wire frame body are symmetrically arranged, and the first wire frame body and the second wire frame body are rotatably connected by an adhesive part, so that the wire frame is a single piece.

[0007] Preferably, the bottom side of the first wire frame body is provided with a first inclined surface, and correspondingly, the bottom side of the second wire frame body is provided with a second inclined surface;

[0008] When the adhesive portion is bent, the first inclined surface and the second inclined surface abut against each other.

[0009] Preferably, the bottom of the first wire frame body extends outward to form a first mounting part, and a first inclined surface is formed on one side of the first mounting part; the bottom of the second wire frame body extends outward to form a second mounting part, and a second inclined surface corresponding to the first inclined surface is formed on one side of the second mounting part.

[0010] Preferably, the top of the first wire frame body extends outward to form a first connecting portion, and the top of the second wire frame body extends outward to form a second connecting portion; the first connecting portion and the second connecting portion are rotatably connected by an adhesive portion.

[0011] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a stator assembly with a wire frame of the above-mentioned U-shaped synchronous motor, characterized in that: the first wire frame body is provided with a first mounting cavity, and the second wire frame body is provided with a second mounting cavity;

[0012] The stator assembly includes:

[0013] The windings are located on the outer periphery of the first and second wire frame bodies.

[0014] The stator core is partially disposed within the first mounting cavity and the second mounting cavity; the stator core includes:

[0015] The base is located at the top of the first wire frame body and the second wire frame body;

[0016] A first arm portion extends downward from one side of the base, and this first arm portion is disposed within a first mounting cavity; and...

[0017] The second arm extends downward from the other side of the base and is spaced apart from the first arm. The second arm is located in the second mounting cavity.

[0018] To facilitate the installation of the stator assembly and rotor assembly during motor assembly, preferably, the first arm is provided with a first mounting section located at the bottom of the first wire frame body; the second arm is provided with a second mounting section located at the bottom of the second wire frame body; both the first mounting section and the second mounting section are provided with an arc surface that mates with the annular edge of the rotor.

[0019] To facilitate the installation of the wires, preferably, it also includes:

[0020] Adhesive tape is applied to the outer periphery of the winding;

[0021] The conductor is placed between the adhesive tape and the winding.

[0022] In order to better secure the stator core and prevent it from loosening, while also ensuring the strength and tightness of the stator core installation, preferably, the first and second wire frame bodies are provided with protruding ribs for tight fitting with the stator core.

[0023] Compared with the prior art, the advantages of this utility model are as follows: the first wire frame body and the second wire frame body are symmetrically arranged, and the first wire frame body and the second wire frame body are rotatably connected by the adhesive part, so that the wire frame is a whole piece. When manufacturing the motor, the coil can be wound on the first wire frame body and the second wire frame body at the same time, and then the adhesive part is bent so that the first wire frame body rotates relative to the second wire frame body, thereby forming the wire frame required for the U-shaped synchronous motor, which has high installation efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the wireframe structure for an example.

[0025] Figure 2 This is a schematic diagram of the original state of the wireframe in the embodiment;

[0026] Figure 3 This is a schematic diagram of the stator assembly in an embodiment.

[0027] Figure 4 This is an exploded view of the stator assembly in an embodiment. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-4 As shown, this is a preferred embodiment of the present invention. Figures 1-2 As shown, the wire frame of the U-shaped synchronous motor includes a first wire frame body 1 and a second wire frame body 2. The first wire frame body 1 and the second wire frame body 2 are arranged symmetrically to each other, and the first wire frame body 1 and the second wire frame body 2 are rotatably connected by an adhesive part 3, making the wire frame a single piece.

[0030] The bottom side of the first wire frame body 1 is provided with a first inclined surface 11, and correspondingly, the bottom side of the second wire frame body 2 is provided with a second inclined surface 21. The first wire frame body 1 includes a first skeleton 14. The bottom of the first skeleton 14 extends outward to form a first mounting part 12, and one side of the first mounting part 12 forms a first inclined surface 11. The top of the first skeleton 14 extends outward to form a first connecting part 13. The second wire frame body 2 includes a second skeleton 24. The bottom of the second skeleton 24 extends outward to form a second mounting part 22, and one side of the second mounting part 22 forms a second inclined surface 21 corresponding to the first inclined surface 11. The top of the second skeleton 24 extends outward to form a second connecting part 23. The first connecting part 13 and the second connecting part 23 are rotatably connected by an adhesive part 3.

[0031] like Figure 2 As shown, in the original state, the first inclined plane 11 and the second inclined plane 21 do not abut against each other; in other embodiments, the included angle formed between the axes of the first wire frame body 1 and the second wire frame body 2 may be different from that in this embodiment.

[0032] like Figure 1 As shown, under the action of external force, the adhesive part 3 bends, and the first inclined surface 11 and the second inclined surface 21 abut against each other.

[0033] like Figures 3-4 As shown, this embodiment also provides a stator assembly, which includes a wire frame, a stator core 4, windings 5, adhesive tape 6, and conductors 7. The first wire frame body 1 is provided with a first mounting cavity 15, and the second wire frame body 2 is provided with a second mounting cavity 25; the stator core 4 is partially disposed in the first mounting cavity 15 and the second mounting cavity 25.

[0034] The winding 5 is located on the outer periphery of the first wire frame body 1 and the second wire frame body 2.

[0035] The stator core 4 includes a base 41, a first arm 42, and a second arm 43. The base 41 is located at the top of the first wire frame body 1 and the second wire frame body 2. The first arm 42 extends downward from one side of the base 41 and is partially located within the first mounting cavity 15. The second arm 43 extends downward from the other side of the base 41 and is spaced apart from the first arm 42. The second arm 43 is located within the second mounting cavity 25. The first arm 42 has a first mounting section 421 located at the bottom of the first wire frame body 1. The second arm 43 has a second mounting section 431 located at the bottom of the second wire frame body 2. Both the first mounting section 421 and the second mounting section 431 have arc surfaces to mate with the annular edge of the rotor. Adhesive tape 6 is located on the outer periphery of the winding 5. A conductor 7 is located between the adhesive tape 6 and the winding 5. The inner sidewalls of the first wire frame body 1 and the second wire frame body 2 have protruding ribs 8 for mate with the first arm 42 and the second arm 43 of the stator core 4.

[0036] The assembly process of the stator assembly is as follows: In the original state, the first inclined surface 11 and the second inclined surface 21 are spaced apart. The coil is wound around the first wire frame body 1 and the second wire frame body 2 to form a winding 5. Then, under the action of external force, the adhesive part 3 is bent, so that the first inclined surface 11 and the second inclined surface 21 abut against each other, and the wire frame reaches the desired position. Figure 1 The installation state is shown; insert the stator core 4, wrap the adhesive tape 6 around the outer periphery of the winding 5, and fix the wire 7 at the same time to form the stator assembly.

Claims

1. A wire frame for a U-shaped synchronous motor, comprising a first wire frame body (1) and a second wire frame body (2), characterized in that: The first wire frame body (1) and the second wire frame body (2) are arranged symmetrically to each other. The first wire frame body (1) and the second wire frame body (2) are rotatably connected by an adhesive part (3) so that the wire frame is a single piece.

2. The wire frame of the U-shaped synchronous motor according to claim 1, characterized in that: The bottom side of the first wire frame body (1) is provided with a first inclined surface (11), and correspondingly, the bottom side of the second wire frame body (2) is provided with a second inclined surface (21). When the adhesive part (3) is bent, the first inclined surface (11) and the second inclined surface (21) abut against each other.

3. The wire frame of the U-shaped synchronous motor according to claim 2, characterized in that: The bottom of the first wire frame body (1) extends outward to form a first mounting part (12), and a first inclined surface (11) is formed on one side of the first mounting part (12); the bottom of the second wire frame body (2) extends outward to form a second mounting part (22), and a second inclined surface (21) corresponding to the first inclined surface (11) is formed on one side of the second mounting part (22).

4. The wire frame of the U-shaped synchronous motor according to claim 1, characterized in that: The top of the first wire frame body (1) extends outward to form a first connecting part (13), and the top of the second wire frame body (2) extends outward to form a second connecting part (23); the first connecting part (13) and the second connecting part (23) are rotatably connected by an adhesive part (3).

5. A stator assembly having the wire frame of a U-shaped synchronous motor as described in any one of claims 1-4, characterized in that: The first wire frame body (1) is provided with a first mounting cavity (15), and the second wire frame body (2) is provided with a second mounting cavity (25); The stator assembly includes: The winding (5) is located on the outer periphery of the first wire frame body (1) and the second wire frame body (2); The stator core (4) is U-shaped and partially disposed within the first mounting cavity (15) and the second mounting cavity (25); the stator core (4) comprises: The base (41) is located on the top of the first wire frame body (1) and the second wire frame body (2); A first arm (42) extends downward from one side of the base (41), and the first arm (42) is partially disposed within the first mounting cavity (15); and, The second arm (43) extends downward from the other side of the base (41) and is spaced apart from the first arm (42). The second arm (43) is located in the second mounting cavity (25).

6. The stator assembly according to claim 5, characterized in that: The first arm (42) is provided with a first mounting section (421) located at the bottom of the first wire frame body (1); the second arm (43) is provided with a second mounting section (431) located at the bottom of the second wire frame body (2); both the first mounting section (421) and the second mounting section (431) are provided with an arc surface that matches the annular edge of the rotor.

7. The stator assembly according to claim 5, characterized in that: Also includes: Adhesive tape (6) is provided on the outer periphery of the winding (5); The conductor (7) is placed between the adhesive tape (6) and the winding (5).

8. The stator assembly according to claim 5, characterized in that: The first wire frame body (1) and the second wire frame body (2) are provided with protruding ribs (8) for cooperating with the stator core (4).

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