Quadrupole motor with novel stator structure

Abstract

The utility model discloses a quadrupole motor with a novel stator structure, which comprises an upper support, a lower support, a stator assembly and a rotor assembly, the stator assembly comprises a stator frame, insulation paper and a winding, the upper support and the lower support are respectively fixed at the upper end and the lower end of the stator frame, the rotor assembly is in running fit relative to the stator assembly, the stator frame is provided with a plurality of wire slots, and the insulation paper is arranged in the wire slots. Insulating paper is arranged in each wire slot, the winding is wound on the insulating paper, and the stator frame is separated from the winding through the insulating paper. According to the stator assembly, the insulation paper is arranged in each wire slot, so that when the winding is wound, the insulation paper is separated from the stator frame, the whole insulation frame in the prior art does not need to be installed, the insulation paper replaces the insulation frame, the cost of the stator assembly is greatly reduced, and the production cost of the whole motor is reduced.

Description

Technical Field

[0001] The utility model belongs to a kind of motor, in particular to a four-pole motor with a novel stator structure. Background Art

[0002] The four-pole series-excited motor mainly includes a stator assembly and a rotor assembly. Among them, the stator assembly includes a stator core, stator enameled wire and a stator wire frame for winding the stator enameled wire; the rotor assembly includes a rotating shaft, magnets and other structures. However, when installing the stator assembly in the existing four-pole motor, in order to realize the enameled wire, that is, the winding, an insulating wire frame is sleeved on the stator core. For example, the patent application No. 202010576636.6 discloses a single-phase four-pole series-excited motor with an improved stator structure. A stator wire frame is installed on the stator core. It can be seen from paragraph 9 of the specification that "the stator wire frame is provided with an upper split frame and a lower split frame. The lower part of the upper split frame has an upper shielding part, and the upper part of the lower split frame has a lower shielding part. The upper shielding part and the lower shielding part are arranged in an opposing or inserting manner to form an enameled wire insulation part. The outer edge of the enameled wire insulation part is provided with a core placement groove for accommodating the stator core, and the inner edge of the enameled wire insulation part is provided with a plurality of wire placement grooves for accommodating the stator enameled wire. Each wire placement groove is arranged in an upper-lower opposing manner with the corresponding wire passing groove", and it can be seen from Figure 11 of its specification drawings that the entire stator wire frame is assembled on the stator core. The stator wire frame has a complex structure and a large volume. Therefore, more raw materials are required, increasing the production cost of the entire stator assembly. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a four-pole motor with a novel stator structure that can solve at least one of the above problems.

[0004] According to one aspect of the utility model, there is provided a four-pole motor with a novel stator structure, including an upper bracket, a lower bracket, a stator assembly and a rotor assembly. The stator assembly includes a stator frame, insulating paper and windings. The upper bracket and the lower bracket are respectively fixed at the upper and lower ends of the stator frame. The rotor assembly is rotationally matched with the stator assembly. The stator frame is provided with a plurality of wire grooves, insulating paper is arranged in each wire groove, and the windings are wound on the insulating paper. The stator frame and the windings are separated by the insulating paper.

[0005] The beneficial effect of the utility model is that by arranging insulating paper in each wire groove, when the windings are wound, they are separated from the stator frame by the insulating paper, and there is no need to install the entire insulating frame in the prior art. The insulating paper replaces the insulating frame, greatly reducing the cost of the stator assembly, thereby facilitating the reduction of the production cost of the entire motor.

[0006] In some embodiments, the upper end of the insulating paper extends beyond the upper end face of the stator frame, and the lower end of the insulating paper extends beyond the lower end face of the stator frame. Thus, the insulating paper has a good insulating effect, avoiding contact between the upper and lower ends of the winding and the stator frame.

[0007] In some embodiments, there are multiple pieces of insulating paper, which are tightly attached to the side walls of the wire grooves. Thus, the insulation requirements for winding each wire groove are met.

[0008] In some embodiments, the stator frame includes a stator core, a support portion, and a baffle. The baffle is located inside the stator core and is connected to the stator core through the support portion. The stator core, the support portion, and the baffle are an integrally formed structure, and the winding is wound around the support portion. Thus, it is convenient to wind the winding.

[0009] In some embodiments, the four-pole motor with a novel stator structure further includes insulating sheets, which are fixed to the upper and lower ends of the stator frame. The number of insulating sheets at each end is the same as that of the support portion. One end of the insulating sheet is fixed to the stator core, and the other end extends to the baffle. Thus, with the insulating sheets provided, it can further avoid contact between the upper and lower sides of the winding and the stator frame when winding the winding.

[0010] In some embodiments, one end of the insulating sheet is horizontally arranged, and the other end is vertically arranged. Thus, through the vertical arrangement of the other end, it can play a certain limiting role on the winding. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the four-pole motor with a novel stator structure of the present utility model.

[0012] Figure 2 is a schematic cross-sectional structural diagram of the four-pole motor with a novel stator structure of the present utility model.

[0013] Figure 3 is a schematic structural diagram of the stator frame in the four-pole motor with a novel stator structure of the present utility model.

[0014] Figure 4 is a schematic structural diagram of the stator assembly in the four-pole motor with a novel stator structure of the present utility model.

[0015] Figure 5 is a schematic structural diagram of the stator assembly except for the winding in the four-pole motor with a novel stator structure of the present utility model.

[0016] Figure 6 is a schematic structural diagram of the insulating sheet in the four-pole motor with a novel stator structure of the present utility model. Detailed Embodiments

[0017] The present utility model will be further described in detail below with reference to the drawings.

[0018] Refer to Figures 1 to 5 。A four-pole motor with a novel stator structure includes an upper bracket 1, a lower bracket 2, a stator assembly 3, and a rotor assembly 4. The stator assembly 3 includes a stator frame 31, insulating paper 32, and windings 33. The upper bracket 1 and the lower bracket 2 are respectively fixed to the upper and lower ends of the stator frame 31. The rotor assembly 4 is rotationally fitted relative to the stator assembly 3. The stator frame 31 is provided with a plurality of wire grooves 34. Each wire groove 34 is provided with insulating paper 32, and the windings 33 are wound around the insulating paper 32. The stator frame 31 and the windings 33 are separated by the insulating paper 32. Among them, the rotor assembly 4 has the same rotor structure as that of a commonly used single-phase four-pole series-excited motor, is located inside the stator assembly 3, and can rotate relative to the stator assembly 3 to realize the normal operation of the motor.

[0019] During actual assembly, a wind blade 6 is installed at one end of the rotating shaft of the rotor assembly 4. When the rotor assembly 4 rotates, it drives the wind blade 6 to rotate together. Through the wind blade 6, the air flow can be accelerated to play a role in heat dissipation. The upper bracket 1, the stator frame 31, and the lower bracket 2 are fixed by bolts to realize the installation of the stator frame 31.

[0020] The stator frame 31 is provided with four wire grooves 34. Therefore, the windings 33 correspond to four groups. When the windings 33 are wound, the insulating paper 32 is placed at the positions where the windings 33 need to be wound in each wire groove 34. When the windings 33 are wound, they are pressed tightly on the insulating paper 32. Through the insulating paper 32, it can be avoided that the windings 33 contact the stator frame 31 to play an insulating role.

[0021] The upper end of the insulating paper 32 extends beyond the upper end surface of the stator frame 31, and the lower end of the insulating paper 32 extends beyond the lower end surface of the stator frame 31. Thus, it can effectively prevent the side surface of the part of the windings 33 that extends beyond the stator frame 31 from contacting the stator frame 31 and ensure the insulation effect.

[0022] The insulating paper 32 is in multiple pieces and is tightly attached to the side walls of the wire grooves 34. Specifically, insulating paper 32 is provided at both ends of each wire groove 34 for winding the windings, so that each winding is convenient to wind and the corresponding separation effect is satisfied.

[0023] The stator frame 31 includes a stator core 311, a support portion 312, and a baffle 313. The baffle 313 is located inside the stator core 311 and is connected to the stator core 311 through the support portion 312. The stator core 311, the support portion 312, and the baffle 313 are an integrally formed structure, and the windings 33 are wound around the support portion 312. During actual assembly, the insulating paper 32 is attached to the inner side of the stator core 311, the side walls of the support portion 312, and the side walls of the baffle 313. The baffle 313 can play a role in limiting the windings, and the rotor assembly is located inside the baffle 313.

[0024] Such as Figure 4 AndFigure 6 As shown, the four-pole motor with the novel stator structure further includes an insulating sheet 5. The insulating sheet 5 is fixed at the upper and lower ends of the stator frame 31. The number of insulating sheets 5 at each end is the same as that of the supporting parts 312. One end of the insulating sheet 5 is fixed on the stator core 311, and the other end extends to the baffle 313. Among them, the insulating sheet 5 and the stator frame 31 are fixedly bonded by glue, which can avoid the contact with the supporting part 312 when the winding is between two insulating papers and ensure the insulation effect.

[0025] One end of the insulating sheet 5 is horizontally arranged, and the other end is vertically arranged. The side surface of the other end of the insulating sheet 5 close to the rotor assembly does not exceed the corresponding side surface of the baffle 313, which plays a certain limiting role on the winding.

[0026] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A four-pole motor with a novel stator structure, characterized in that, It includes an upper bracket (1), a lower bracket (2), a stator assembly (3) and a rotor assembly (4). The stator assembly (3) includes a stator frame (31), insulating paper (32) and windings (33). The upper bracket (1) and the lower bracket (2) are respectively fixed to the upper and lower ends of the stator frame (31). The rotor assembly (4) is rotationally fitted relative to the stator assembly (3). A plurality of wire grooves (34) are provided on the stator frame (31), insulating paper (32) is provided in each of the wire grooves (34), and the windings (33) are wound around the insulating paper (32). The stator frame (31) and the windings (33) are separated by the insulating paper (32).

2. The four-pole motor with a novel stator structure according to claim 1, characterized in that, The upper end of the insulating paper (32) extends beyond the upper end face of the stator frame (31), and the lower end of the insulating paper (32) extends beyond the lower end face of the stator frame (31).

3. The four-pole motor with a novel stator structure according to claim 2, characterized in that, The insulating paper (32) is in multiple pieces and is attached tightly to the side walls of the wire grooves (34).

4. The four-pole motor with a novel stator structure according to any one of claims 1 to 3, characterized in that, The stator frame (31) includes a stator core (311), a support portion (312) and a baffle (313). The baffle (313) is located inside the stator core (311) and is connected to the stator core (311) through the support portion (312). The stator core (311), the support portion (312) and the baffle (313) are an integrally formed structure, and the windings (33) are wound around the support portion (312).

5. The four-pole motor with a novel stator structure according to claim 4, characterized in that, It further includes insulating sheets (5). The insulating sheets (5) are fixed to the upper and lower ends of the stator frame (31). The number of insulating sheets (5) at each end is the same as that of the support portions (312). One end of each insulating sheet (5) is fixed to the stator core (311), and the other end extends to the baffle (313).

6. The four-pole motor with a novel stator structure according to claim 5, characterized in that, One end of the insulating sheet (5) is horizontally arranged, and the other end is vertically arranged.

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