Stator assembly and motor using same

Abstract

The stator assembly comprises a stator iron core and an insulation framework wrapping the outer surface of the stator iron core, the insulation framework comprises an insulation yoke part and an insulation tooth part, the stator iron core is provided with a wire embedding groove, the wire embedding groove is provided with a groove opening, and the insulation yoke part and the insulation tooth part are arranged on the stator iron core. A notch baffle extends from the end part of each of two adjacent insulating tooth parts at the position of the notch, a coil winding is wound outside the insulating tooth parts, and the coil winding structure is characterized in that a first convex block protrudes out of the notch baffle at one side of the notch, and a second convex block protrudes out of the notch baffle at the other side of the notch. The first convex block and the second convex block can block the enameled wire of the coil winding and prevent the enameled wire from getting out of the groove; and the notch can be prevented from being too small, so that the stator assembly BMC can enter from a gap of the notch more easily during injection molding, and lack of BMC materials and leakage of enameled wires are avoided.

Description

Technical Field

[0001] The utility model relates to a stator assembly and a motor using the same. Background Art

[0002] The existing stator assembly made of a bar-shaped iron core assembly includes a bar-shaped stator iron core and an insulating skeleton wrapped outside the bar-shaped stator iron core. The insulating skeleton includes an insulating yoke portion, insulating tooth portions and slot mouth baffles, and a coil winding is wound outside the insulating tooth portions. The existing stator assembly has the following disadvantages: 1. If the slot mouth of the stator assembly is wide and the full rate is high, the enameled wire of the coil winding is likely to run out of the slot from the slot mouth, resulting in breakdown between the enameled wire and the iron core; 2. If the slot mouth of the stator assembly is narrow, when BMC injection molding is carried out on the stator assembly, due to the too narrow slot mouth, BMC is not easy to enter the slot mouth, resulting in incomplete injection molding, material shortage and enameled wire leakage. Summary of the Utility Model

[0003] The utility model provides a stator assembly and a motor using the same to solve the problems in the prior art.

[0004] The technical solution of the utility model is realized as follows:

[0005] The first object of the utility model is to provide a stator assembly, including a stator iron core and an insulating skeleton wrapped outside the outer surface of the stator iron core. The insulating skeleton includes an insulating yoke portion and insulating tooth portions. Embedded slots are provided on the stator iron core, and the embedded slots are provided with slot mouths. At the position of the slot mouth, a slot mouth baffle extends from the ends of two adjacent insulating tooth portions respectively. A coil winding is wound outside the insulating tooth portions. It is characterized in that: a first convex block protrudes from the slot mouth baffle on one side of the slot mouth, and a second convex block protrudes from the slot mouth baffle on the other side of the slot mouth.

[0006] The above-mentioned first convex block and second convex block are arranged staggeredly.

[0007] The above-mentioned first convex block and second convex block abut against the adjacent slot mouth baffles.

[0008] Or the above-mentioned first convex block and second convex block are arranged correspondingly, and the first convex block abuts against the opposite second convex block.

[0009] The above-mentioned stator iron core is a bar-shaped stator iron core.

[0010] The second object of the utility model is to provide a motor, including a stator assembly, characterized in that: the stator assembly is the above-mentioned stator assembly.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. A slot is provided on the stator core, and the slot has a slot opening. At the position of the slot opening, a slot opening baffle extends from the ends of two adjacent insulating tooth parts respectively. A coil winding is wound around the insulating tooth part. It is characterized in that: a first convex block protrudes from the slot opening baffle on one side of the slot opening, and a second convex block protrudes from the slot opening baffle on the other side of the slot opening. The first convex block and the second convex block can block the enameled wire of the coil winding to prevent it from coming out of the slot; due to the existence of the first convex block and the second convex block, when designing the slot opening, a larger width is reserved, which can prevent the stator assembly from being more likely to enter from the slot gap during BMC injection molding due to the too small slot opening, and avoid the lack of BMC material and the leakage of enameled wire.

[0013] 2. Other advantages of the present utility model are described in detail in the embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic structural diagram of a stator assembly provided by Embodiment 1 of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of part A of

[0016] Figure 3 FIG. is a schematic structural diagram of the stator assembly provided by Embodiment 1 of the present utility model after being unfolded;

[0017] Figure 4 is Figure 3 an enlarged view of part B of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment 1:

[0020] As Figures 1 to 4As shown in the figure, the stator assembly provided in this embodiment includes a stator core 2 and an insulating skeleton 1 wrapped around the outer surface of the stator core 2. The insulating skeleton 1 includes an insulating yoke portion 11 and insulating tooth portions 12. The stator core 2 is provided with wire embedding grooves 21, and the wire embedding grooves 21 are provided with notch openings 210. At the position of the notch openings 210, a notch baffle 13 extends from the ends of two adjacent insulating tooth portions 12 respectively. Coil windings are wound around the insulating tooth portions 12. It is characterized in that: a first convex block 141 protrudes from the notch baffle 13 on one side of the notch opening 210, and a second convex block 142 protrudes from the notch baffle 13 on the other side of the notch opening 210.

[0021] For the stator assembly, the first convex block 141 and the second convex block 142 can block the enameled wire of the coil winding to prevent it from coming out of the groove; due to the existence of the first convex block and the second convex block, when designing the notch opening, a larger notch width is reserved, which can prevent the injection molding material from easily entering through the notch gap when the stator assembly is injection molded with BMC, and avoid the lack of BMC material and the leakage of enameled wire.

[0022] The above-mentioned first convex block 141 and second convex block 142 are axially staggered. This can prevent the first convex block 141 and the second convex block 142 from interfering with the feeding during the BMC injection molding of the stator assembly.

[0023] The above-mentioned first convex block 141 and second convex block 142 abut against the adjacent notch baffle 13, which can block the enameled wire of the coil winding to prevent it from coming out of the groove.

[0024] As an option, the first convex block 141 and the second convex block 142 are correspondingly arranged, and the first convex block 141 abuts against the opposite second convex block 142. This further widens the size of the notch opening, making it easier for the injection molding material to enter through the notch gap during the BMC injection molding of the stator assembly, and avoiding the lack of BMC material during injection molding.

[0025] The above-mentioned stator core 2 is a strip-shaped stator core. Using a strip-shaped stator core makes it more convenient to wind the coil windings.

[0026] Embodiment Two:

[0027] The motor provided in this embodiment includes a stator assembly 100, and is characterized in that: the stator assembly 100 is the stator assembly described in Embodiment One.

[0028] By improving the structure of the stator assembly 100, the working performance of the motor is made more stable.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stator assembly, comprising a stator core (2) and an insulating skeleton (1) covering the outer surface of the stator core (2). The insulating skeleton (1) includes an insulating yoke portion (11) and insulating tooth portions (12). The stator core (2) is provided with wire embedding grooves (21), and the wire embedding grooves (21) are provided with notch openings (210). At the position of the notch openings (210), a notch baffle (13) extends from the ends of two adjacent insulating tooth portions (12) respectively. A coil winding is wound around the insulating tooth portions (12), and it is characterized in that: On one side of the notch (210), the notch baffle (13) protrudes with a first convex block (141), and on the other side of the notch (210), the notch baffle (13) protrudes with a second convex block (142).

2. The stator assembly according to claim 1, characterized in that: The first convex block (141) and the second convex block (142) are arranged with a stagger in the height direction.

3. The stator assembly according to claim 2, characterized in that: The first convex block (141) and the second convex block (142) abut against the adjacent notch baffle (13).

4. A stator assembly according to claim 1, characterized in that: The first convex block (141) and the second convex block (142) are correspondingly arranged, and the first convex block (141) abuts against the opposite second convex block (142).

5. A stator assembly according to any one of claims 1 to 4, characterized in that: The stator core (2) is a strip-shaped stator core.

6. A motor, comprising a stator assembly (100), characterized in that: The stator assembly (100) is the stator assembly according to any one of claims 1 to 5.

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