Stator structure of permanent magnet synchronous motor

Abstract

The utility model relates to the technical field of motors, in particular to a stator structure of a permanent magnet synchronous motor, which comprises a yoke part, a plurality of tooth parts are clamped and connected on the inner surface of the yoke part, stator windings are wound and fixedly connected on the outer surfaces of the plurality of tooth parts, and fixing nails are jointly in threaded connection between the plurality of tooth parts and the yoke part. According to the stator structure of the permanent magnet synchronous motor provided by the utility model, the yoke part and the tooth part are arranged to be a separable structure, so that the stator winding and the tooth part can be independently operated without special machines and tools and can also be operated by hands when a stator is produced, and after the stator winding and the tooth part are assembled, the stator winding and the tooth part can be conveniently and quickly assembled. When the device is produced, the machined tooth part can be connected with the yoke part, finally, the tooth part and the yoke part are fixed through a fixing nail, and due to the separable structure, the use of machining equipment can be reduced when the device is produced, so that the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator structure of a permanent magnet synchronous motor. Background Technique

[0002] The permanent magnet synchronous motor is a highly efficient and energy-saving power device with great development potential, and is increasingly widely used in many fields of industrial production and daily life. The traditional permanent magnet synchronous motor has the advantages of large power density, small volume, high efficiency, high reliability, and low operating cost.

[0003] However, the yoke and teeth in the existing stator structure of the permanent magnet synchronous motor are generally an integral structure. During production operations, specific tools are required to wind the teeth, which will increase production costs during the operation process. Therefore, we introduce a new stator structure for the permanent magnet synchronous motor. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a stator structure of a permanent magnet synchronous motor, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A stator structure of a permanent magnet synchronous motor, including a yoke, wherein a plurality of teeth are snap-connected to the inner surface of the yoke, and stator windings are wound and fixedly connected to the outer surfaces of the plurality of teeth. Fixing nails are commonly threadedly connected between the plurality of teeth and the yoke.

[0007] Preferably, the plurality of teeth are evenly distributed in a circular array and do not contact each other.

[0008] Preferably, the yoke includes a fixing ring, a plurality of sliding grooves are opened on the inner surface of the fixing ring, and a plurality of first fixing holes are opened on the outer surface of the fixing ring.

[0009] Preferably, the plurality of sliding grooves are evenly distributed in a circular array and do not contact each other, and the plurality of first fixing holes respectively correspond to the positions of the plurality of sliding grooves and are communicated with each other.

[0010] Preferably, the tooth includes a slider, a second fixing hole is opened in the middle of one end of the slider close to the yoke, and a connecting portion is fixedly connected to the end of the slider far from the yoke.

[0011] Preferably, the slider is slidably connected to the sliding groove, the second fixing hole corresponds to the position of the first fixing hole, and the second fixing hole, the first fixing hole and the fixing nail are commonly threadedly connected, and the connecting portion is wound and fixedly connected to the stator winding.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the present utility model, by setting the yoke part and the tooth part into a separable structure, when producing the stator, the stator winding and the tooth part can be operated separately. No specific machine or tool is required, and it can be operated by hand. After the assembly of the stator winding and the tooth part is completed, the processed tooth part and the yoke part can be connected, and finally fixed with fixing nails. The separable structure can reduce the use of processing equipment during the production of the device, thereby reducing the production cost.

[0014] 2. In the present utility model, by setting the sliding groove in the yoke part and the sliding block in the tooth part into a structure that can be mutually engaged, when the tooth part and the yoke part are connected, the tooth part can be prevented from falling during fixation by engagement, and it can also prevent the tooth part from falling due to the loosening of the fixing nails during the use of the device after production. It not only facilitates the assembly of the device but also ensures the safety of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structure schematic diagram of a stator structure of a permanent magnet synchronous motor of the present utility model;

[0016] Figure 2 is the overall structure disassembly schematic diagram of a stator structure of a permanent magnet synchronous motor of the present utility model;

[0017] Figure 3 is the overall structure schematic diagram of the yoke part of a stator structure of a permanent magnet synchronous motor of the present utility model;

[0018] Figure 4 is the overall structure schematic diagram of the tooth part of a stator structure of a permanent magnet synchronous motor of the present utility model.

[0019] In the figure: 1. Yoke part; 2. Tooth part; 3. Fixing nail; 4. Stator winding; 11. Fixing ring; 12. Sliding groove; 13. First fixing hole; 21. Sliding block; 22. Second fixing hole; 23. Connecting part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0024] A stator structure of a permanent magnet synchronous motor includes a yoke 1. A plurality of tooth parts 2 are snap-connected to the inner surface of the yoke 1. The outer surfaces of the plurality of tooth parts 2 are all wound and fixedly connected with stator windings 4. A fixing nail 3 is commonly thread-connected between each of the plurality of tooth parts 2 and the yoke 1. The plurality of tooth parts 2 are equidistantly arranged in a circular array and do not contact each other.

[0025] In this embodiment, the yoke 1 includes a fixing ring 11. A plurality of chutes 12 are formed on the inner surface of the fixing ring 11. A plurality of first fixing holes 13 are formed on the outer surface of the fixing ring 11. The plurality of chutes 12 are equidistantly arranged in a circular array and do not contact each other. The plurality of first fixing holes 13 correspond to the positions of the plurality of chutes 12 and are communicated with each other. By setting the yoke 1 and the tooth part 2 into a separable structure, the separable structure can reduce the use of processing equipment during the production of the device, thereby reducing the production cost.

[0026] In this embodiment, the tooth part 2 includes a slider 21. A second fixing hole 22 is formed in the middle of one end of the slider 21 close to the yoke part 1. A connecting part 23 is fixedly connected to the end of the slider 21 away from the yoke part 1. The slider 21 is slidably connected to the sliding groove 12. The second fixing hole 22 corresponds to the position of the first fixing hole 13, and the second fixing hole 22 and the first fixing hole 13 are commonly threadedly connected with the fixing nail 3. The connecting part 23 is fixedly connected to the stator winding 4 by winding. By setting the sliding groove 12 in the yoke part 1 and the slider 21 of the tooth part 2 into a structure that can be engaged with each other, when the tooth part 2 is connected to the yoke part 1, the tooth part 2 can be prevented from falling off during fixation by engagement, and it can also prevent the tooth part 2 from falling off due to the loosening of the fixing nail 3 during the use of the device after production is completed.

[0027] It should be noted that the present utility model is a stator structure of a permanent magnet synchronous motor. By setting the yoke part 1 and the tooth part 2 into a separable structure, when producing the stator, the stator winding 4 and the tooth part 2 can be operated separately without the need for specific machines and tools, and it can also be operated by hand. After the stator winding 4 and the tooth part 2 are assembled, the processed tooth part 2 can be connected to the yoke part 1, and finally, the fixing nail 3 is used to fix it. The separable structure can reduce the use of processing equipment during the production of the device, thereby reducing the production cost. And by setting the sliding groove 12 in the yoke part 1 and the slider 21 of the tooth part 2 into a structure that can be engaged with each other, when the tooth part 2 is connected to the yoke part 1, the tooth part 2 can be prevented from falling off during fixation by engagement, and it can also prevent the tooth part 2 from falling off due to the loosening of the fixing nail 3 during the use of the device after production is completed. This not only facilitates the assembly of the device but also ensures the use safety of the device.

[0028] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A stator structure of a permanent magnet synchronous motor, comprising a yoke portion (1), characterized in that: A number of tooth parts (2) are snap - connected to the inner surface of the yoke part (1), stator windings (4) are wound and fixedly connected to the outer surfaces of the number of tooth parts (2), and fixing nails (3) are commonly thread - connected between the number of tooth parts (2) and the yoke part (1).

2. The stator structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The number of tooth parts (2) are distributed in an equidistant circular array and do not contact each other.

3. A stator structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The yoke part (1) includes a fixed ring (11), a number of sliding grooves (12) are formed on the inner surface of the fixed ring (11), and a number of first fixing holes (13) are formed on the outer surface of the fixed ring (11).

4. A stator structure of a permanent magnet synchronous motor according to claim 3, characterized in that: The number of sliding grooves (12) are distributed in an equidistant circular array and do not contact each other, and the number of first fixing holes (13) are respectively corresponding to the positions of the number of sliding grooves (12) and are communicated with each other.

5. A stator structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The tooth part (2) includes a slider (21), a second fixing hole (22) is formed in the middle of one end of the slider (21) close to the yoke part (1), and a connecting part (23) is fixedly connected to the end of the slider (21) far from the yoke part (1).

6. The stator structure of a permanent magnet synchronous motor according to claim 5, characterized in that: The slider (21) is slidably connected to the sliding groove (12), the second fixing hole (22) corresponds to the position of the first fixing hole (13), and the second fixing hole (22), the first fixing hole (13) and the fixing nail (3) are commonly thread - connected, and the connecting part (23) is wound and fixedly connected to the stator winding (4).

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