Brushless motor stator

Abstract

The utility model relates to the technical field of motors, in particular to a brushless motor stator which comprises a motor body, the motor body is fixedly connected with a fixing plate, a first rotating shaft penetrates through the fixing plate, the bottom of the motor body is fixedly connected with a lower framework, the lower framework is used for fixing, and a stator assembly is arranged at the bottom of the inner wall of the motor body. A cutting assembly used in cooperation with the stator assembly is sleeved with the stator assembly. The stator assembly is used for generating a rotating magnetic field. The cutting assembly is used for being cut by magnetic lines in a rotating magnetic field generated in the stator assembly so as to generate current. Compared with the prior art, the use effect of the motor is improved, the sealing performance of the motor is better, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a brushless motor stator. Background Art

[0002] The brushless motor is mainly composed of parts such as the stator, rotor and casing. The rotor includes a rotating shaft, magnetic tiles and a rotor core. The stator core includes an upper and lower frame and a stator core. The stator core has a number of radially protruding teeth, and winding slots are formed between adjacent teeth to accommodate the coil windings.

[0003] In the prior art, the wiring methods of the motor mainly include Y-type and triangle connection; the Y-type connects the ends of the three windings of the three-phase power supply, X, Y, and Z, together to form a common point O, and leads three end wires from the starting ends A, B, and C. Because it looks like an inverted letter Y, this connection method is called "Y-type connection" (also known as "star connection"); the triangle connection is to connect the three windings of the three-phase power supply at the end, that is, the beginning of a winding is connected to the end of the next winding connected to it, and the shape looks like a triangle, so it is called a triangle connection. Generally speaking, the windings of three-phase brushless motors are connected in a triangle, and circulating currents will be generated in the three-phase windings, resulting in additional losses and temperature rises. The Y-type connection does not have this problem, has better performance, and is preferred. However, in actual use, the traditional brushless motor uses three wires for winding, three common hooks, and adopts the method of replacing the tooth slots on the upper part. When the windings of most motors are connected in a Y-type manner, the stator assembly is realized, but it will cause additional losses and temperature rises when the motor is used, and will occupy a large amount of space inside the motor, thereby reducing the sealing of the motor. Therefore, the utility model proposes a brushless motor stator to meet the needs of improving the motor stator to reduce losses and temperature rises. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a brushless motor stator to solve the problem of additional loss and temperature rise caused by circulating current when the motor stator is in use.

[0005] Based on the above purpose, the utility model provides a brushless motor stator, including a motor body, the motor body is fixedly connected with a fixing plate, a first rotating shaft passes through the fixing plate, the bottom of the motor body is fixedly connected with a lower frame, the lower frame is used for fixing, a stator assembly is provided at the bottom of the inner wall of the motor body, and a cutting assembly used in conjunction with it is sleeved in the stator assembly; the stator assembly is used to generate a rotating magnetic field; the stator assembly includes a stator core, the stator core is fixedly connected to the inner wall of the motor body, an enameled wire is sleeved on the inner wall of the motor body, the stator core is composed of thirty-two silicon steel sheets stacked axially along the first rotating shaft, and the stator core has six radially extending extending teeth; the cutting assembly is used to be cut by magnetic lines of force in the rotating magnetic field generated in the stator assembly to generate current, the cutting assembly includes a second rotating shaft fixedly connected to the bottom of the inner wall of the motor body, two magnetic tiles are fixedly connected to the second rotating shaft, and multiple groups of rotor cores are fixedly connected to the inner wall of the motor body, and each magnetic pole of the magnetic tile on the rotor core corresponds to a coil.

[0006] Preferably, the extended teeth are numbered 1 to 6 in a counterclockwise order, and the tooth side of each tooth is C, namely C1 to C11.

[0007] Preferably, a winding slot is formed between two adjacent teeth in the upper portion of the stator core, and the stator core has a total of six winding slots, which are slots S1 to S6 in a counterclockwise order.

[0008] Preferably, the enameled wire is wound from two conducting wires.

[0009] Preferably, a plurality of groups of hooks are fixedly connected to the top of the motor body, and the hooks are divided into G1 to G4 in sequence around the axis of the first rotating shaft.

[0010] Beneficial effects of the utility model:

[0011] 1. Compared with the traditional winding method, this winding method realizes the replacement of winding slots through the lower part of the stator core, and the hook is set on the upper part of the stator core. This underlining method reasonably utilizes the space of the lower frame, has better safety and stronger sealing, and improves the use effect of the motor stator. The traditional brushless motor uses three wires and three common hooks for winding. The motor stator uses two wires and one common hook for winding, which saves materials, saves working time, and improves work efficiency. In addition, the motor is a four-pole six-slot Y-type winding, which can make the motor using this stator winding method have uniform current distribution, less heat generation, high efficiency, and high density when running, thereby reducing the loss and temperature rise of the motor stator during use.

[0012] 2. By cutting the magnetic lines of force in the rotating magnetic field generated by the stator assembly through the magnetic tiles, the induced electromotive force formed by the entire stator assembly can drive the cutting assembly to rotate, thereby generating current, thereby improving the efficiency of the motor and making installation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 It is the internal schematic diagram of the utility model;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4 This is a schematic diagram of the cutting assembly of the utility model;

[0018] Figure 5 It is a schematic diagram of winding from the outer circle to the center of the utility model.

[0019] The markings in the figure are: 1. Motor body; 2. Fixed plate; 3. First rotating shaft; 4. Stator core; 5. Lower frame; 6. Extended teeth; 7. Winding groove; 8. Enameled wire; 9. Second rotating shaft; 10. Magnetic tile; 11. Rotor core; 12. Hook. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figure 1-Figure 5 As shown, a brushless motor stator comprises a motor body 1, in which a motor stator is installed, a fixing plate 2 is fixedly connected to the top of the motor body 1, a first rotating shaft 3 passes through the fixing plate 2, a mounting frame is fixedly connected to the bottom of the motor body 1, the mounting frame is used to fix the motor body 1, a stator assembly is provided at the bottom of the inner wall of the motor body 1, and a cutting assembly matched with the stator assembly is sleeved inside the stator assembly; the stator assembly is used to generate a rotating magnetic field; the cutting assembly is used to be cut by magnetic lines of force in the rotating magnetic field generated in the stator assembly to generate current, and when the brushless motor is used, the cooperation between the stator assembly and the cutting assembly improves the use effect of the motor, and the motor has better sealing and higher safety.

[0023] like Figure 1-Figure 3As shown, the stator assembly includes a stator core 4, one side of the stator core 4 is fixedly connected to a lower frame 5, the lower frame 5 is fixedly connected to the inner wall of the motor body 1, the inner wall of the motor body 1 is sleeved with an enameled wire 8, and the enameled wire 8 is connected to a three-phase alternating current to generate a rotating magnetic field. The stator core 4 is composed of thirty-two silicon steel sheets stacked axially along the first rotating shaft 3. The stator core 4 has six radially extending extension teeth 6, and the extension teeth 6 are 1 to 6 in counterclockwise order, and the tooth side of each tooth is C, which is C1 to C11. A winding slot 7 is formed between two adjacent teeth in the upper part of the stator core 4. There are a total of 100 teeth in the stator core 4. There are six winding slots 7, which are slots S1 to S6 in counterclockwise order. The enameled wire 8 is wound by two wires. A plurality of hooks 12 are fixedly connected to the top of the motor body 1. The hooks 12 are divided into G1 to G4 in sequence around the axis of the first rotating shaft 3. When winding the electric core winding, the enameled wire 8 is firstly hooked to the hook G3 on the hook 12 on the upper part of the stator core 4, and then the enameled wire 8 is fed downward from the slot S6 in the winding slot 7 on the upper part of the stator core 4, that is, the side C12 side of the tooth 1 in the extended tooth 6, and is wound around the tooth 1 for several turns, and then the enameled wire is discharged downward from the C12 side of the tooth 1; 8 is wound clockwise from the slot S4 at the lower part of the stator core 4, that is, the C7 side of the tooth 4, and is wound around the tooth 4 for several turns, and is discharged upward from the C7 side of the tooth 4; the enameled wire 8 is wound counterclockwise from the upper part of the stator core 4, hooked with the hook G4, and is wound from the slot S6 at the upper part of the stator core 4, that is, the C11 side of the tooth 6, and is wound around the tooth 6 for several turns, and is discharged downward from the C12 side of the tooth 6; the winding method of the enameled wire 8 is to be wound counterclockwise from the slot S2 at the lower part of the stator core 4, that is, the C5 side of the tooth 3, and is discharged upward from the C5 side of the tooth 3; The winding wire is hung on the hook G1 and the hook G2 in the clockwise direction; then, the winding wire starts from the hook G2 on the upper part of the stator core 4, enters downward from the slot S1 on the upper part of the stator core 4, that is, the C3 side of the tooth 2, winds around the tooth 2 for several turns, and exits downward from the slot S1 on the lower part of the stator core 4, that is, the C3 side of the tooth 2; the enameled wire 8 enters upward from the slot S5 on the lower part of the stator core 4, that is, the C10 side of the tooth 5, in the lower part of the stator core 4, in the clockwise direction, winds around the tooth 5 for several turns, and exits upward from the slot S5 on the upper part of the stator core 4, that is, the C10 side of the tooth 5; the winding wire is hung on the hook G4 in the counterclockwise direction on the upper part of the stator core 4;Finally, the enameled wire 8 between the hook G1 and the hook G2 is cut off to complete the winding of the battery core. Compared with the traditional winding method, this winding method is to replace the winding slot 7 through the lower part of the stator core 4, and the hook 12 is arranged on the upper part of the stator core 4. This underlining method reasonably utilizes the space of the lower frame 5, has better safety and stronger sealing, and improves the use effect of the motor stator. The traditional brushless motor uses three wires and three common hooks for winding. The motor stator uses two wires and one common hook for winding, which saves materials, saves working time, and improves work efficiency. In addition, the motor is a four-pole six-slot Y-type winding. When the motor is running, the current is evenly distributed, the heat is small, the efficiency is high, and the density is high. ;

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, the cutting assembly includes a second rotating shaft 9 fixedly connected to the bottom of the inner wall of the motor body 1, two magnetic tiles 10 are fixedly connected to the bottom of the inner wall of the motor body 1, and multiple groups of rotor cores 11 are fixedly connected to the inner wall of the motor body 1. Each magnetic pole of the magnetic tile 10 on the rotor core 11 corresponds to a coil. The magnetic tiles 10 cut the magnetic lines of force in the rotating magnetic field generated by the stator assembly. The induced electromotive force formed by the entire stator assembly can drive the cutting assembly to rotate, thereby generating current, thereby improving the use efficiency of the motor and making the installation more convenient.

[0025] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0026] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A brushless motor stator, comprising a motor body (1), wherein the motor stator is installed in the motor body (1), characterized in that: The top of the motor body (1) is fixedly connected to a fixing plate (2), a first rotating shaft (3) passing through the fixing plate (2), the bottom of the motor body (1) is fixedly connected to a mounting frame, the mounting frame is used to fix the motor body (1), a stator assembly is provided at the bottom of the inner wall of the motor body (1), a cutting assembly used in conjunction with the stator assembly is sleeved inside the stator assembly; the stator assembly is used to generate a rotating magnetic field, the stator assembly comprises a stator core (4), one side of the stator core (4) is fixedly connected to a lower frame (5), the lower frame (5) is fixedly connected to the inner wall of the motor body (1), an enameled wire (8) is sleeved on the inner wall of the motor body (1), the enameled wire (8) 8) A three-phase alternating current is introduced to generate a rotating magnetic field, the stator core (4) is composed of thirty-two silicon steel sheets stacked axially along a first rotating shaft (3), and the stator core (4) has six radially extending extension teeth (6); the cutting assembly is used to be cut by magnetic lines of force in the rotating magnetic field generated in the stator assembly to generate current, the cutting assembly includes a second rotating shaft (9) rotatably connected to the bottom of the inner wall of the motor body (1), two magnetic tiles (10) are fixedly connected to the bottom of the inner wall of the motor body (1), and multiple groups of rotor cores (11) are fixedly connected to the inner wall of the motor body (1), and each magnetic pole of the magnetic tile (10) on the rotor core (11) corresponds to a coil.

2. A brushless motor stator according to claim 1, characterized in that: A winding slot (7) is formed between two adjacent extended teeth (6) at the upper part of the stator core (4), and the stator core (4) has a total of six winding slots (7), which are slots S1 to S6 in a counterclockwise order.

3. The brushless motor stator according to claim 1, characterized in that: The extended teeth (6) are numbered 1 to 6 in a counterclockwise order, and the tooth side of each tooth is C, namely C1 to C11.

4. A brushless motor stator according to claim 2, characterized in that: The enameled wire (8) is formed by winding two wires.

5. The brushless motor stator according to claim 2, characterized in that: A plurality of groups of hooks (12) are fixedly connected to the top of the motor body (1), and the hooks (12) are divided into groups G1 to G4 in sequence around the axis of the first rotating shaft (3).

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