Brushless motor

Abstract

The utility model discloses a brushless motor, including stator and rotor, the stator includes the core and the ring body of setting outside the core, the inside of ring body is provided with a plurality of winding parts to the central position extension, the outer wall of ring body is provided with the through -hole interval, the through -hole is provided with the pin, the bottom of pin is fixed with the enameled wire, and the top is welded fixed on the PCBA board, the utility model discloses a brushless motor is provided with the through -hole on the outer wall of ring body, and the through -hole is provided with the pin, and the top of pin is welded fixed on the PCBA board, and the bottom is fixed with the enameled wire, and the signal on the PCBA board passes through the pin transmission current signal to drive the rotor, and the pin is separated up and down with the enameled wire fixed point of welding point by using the through -hole, guarantees when welding PCBA board and will not damage the enameled wire, and the pin can be inserted directly, reduces the cost while convenient assembly.

Description

Technical Field

[0001] This utility model relates to a brushless motor. Background Technology

[0002] Brushless motors, with their advantages of electronic commutation, precise control, and high-efficiency conversion, are widely used in automotive actuators. To achieve power transmission, signal interaction, and intelligent control of brushless motors, the connection between the brushless motor and the PCBA board is a crucial link in the motor control system. Brushless motors can be directly soldered to the PCBA board via pins. One end of the pin is soldered to the PCBA board, and enameled wire is fixed to the pin. Currently, the pins for existing brushless motors are only located at the upper end, and the distance between the enameled wire fixed to the pin and the soldering point is too close. Therefore, during soldering, the enameled wire's coating is easily damaged, causing a short circuit. Furthermore, the pin needs to be fixed to the brushless motor through injection molding, which is costly. Utility Model Content

[0003] This utility model provides a brushless motor.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A brushless motor includes a stator and a rotor. The stator includes an iron core and an outer ring body sleeved outside the iron core. Several winding portions are provided on the inner side of the ring body extending towards the center. Through holes are provided at intervals on the outer wall of the outer ring body. Pins are inserted through the through holes. Enamelled wire is fixed at the bottom end of the pin and soldered to the top end of the pin on the PCBA board.

[0006] Preferably, three-phase copper coils are wound at intervals at the winding section, with the three identical windings spaced 120° apart. o Uniformly distributed.

[0007] Preferably, the winding portion has 9 parts.

[0008] Preferably, the bottom of the outer ring body is provided with a plurality of outwardly protruding transition portions at intervals.

[0009] Preferably, a protruding ear is provided at the upper end of the outer ring body's outer wall.

[0010] Preferably, three through holes are provided.

[0011] Preferably, positioning posts are evenly spaced on the top of the outer ring body.

[0012] Compared with the prior art, the brushless motor of this utility model has a through hole on the outer wall of the outer ring body, through which a pin is inserted. The top of the pin is welded and fixed to the PCBA board, and the bottom is fixed with an enameled wire. The signal on the PCBA board is transmitted through the pin to transmit the current signal, thereby driving the rotor. The through pin separates the welding point from the fixed point of the enameled wire, ensuring that the enameled wire is not damaged when welding the PCBA board. Moreover, the pin can be directly inserted, reducing costs and facilitating assembly. Attached Figure Description

[0013] Figure 1 This is a first three-dimensional schematic diagram of the brushless motor of this utility model.

[0014] Figure 2 This is a second perspective view of the brushless motor of this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figures 1 to 2 As shown, the brushless motor includes a stator 1 and a rotor 2. The stator 1 includes an iron core and an outer ring body 11 sleeved outside the iron core. Several winding portions 111 are provided on the inner side of the ring body 11 extending towards the center. Three-phase copper coils are wound at intervals in the winding portions 111, and the three identical windings are spaced 120° apart. o Uniformly distributed; the winding section 111 has 9 sections.

[0017] The bottom of the outer ring body 11 is provided with a plurality of outwardly protruding transition portions 112. When the enameled wire of the same phase is wound on the winding portion 111, it transitions to another winding portion 111 through the transition portion 112.

[0018] Three through holes 113 are spaced apart on the outer wall of the outer ring body 11. A pin 3 is inserted through the through hole 113. An enameled wire is fixed to the bottom end of the pin 3 and the top end is welded to the PCBA board. The welding point between the enameled wire and the PCBA board is isolated from the top and bottom, ensuring that the enameled wire will not be damaged when welding the PCBA board. The PCBA board transmits current signals to the enameled wire through the pin, so that an electromagnetic field is generated inside the stator 1, thereby driving the rotor 2 to rotate. A gear is set in the middle of the rotor 2, thereby transmitting torque to the next stage gear.

[0019] The top of the outer ring body 11 is provided with positioning posts 114 at even intervals. The positioning posts 114 are used to prevent the PCBA board from pressing on the coil at the winding part 111 and to protect the circuit safety.

[0020] The outer ring body 11 also has a protruding ear at the upper end of its outer wall, which serves a positioning function.

[0021] This utility model of a brushless motor has a through hole 113 on the outer wall of the outer ring body 11, through which a pin 3 is inserted. The top end of the pin 3 is welded and fixed to the PCBA board, and the bottom end is fixed with an enameled wire. The signal on the PCBA board is transmitted through the pin to transmit the current signal, thereby driving the rotor 2. The through pin 3 separates the welding point from the fixed point of the enameled wire, ensuring that the enameled wire is not damaged when welding the PCBA board. Moreover, the pin 3 can be directly inserted, reducing costs and facilitating assembly.

[0022] Finally, it should be noted that the above embodiments only illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A brushless motor comprising a stator (1) and a rotor (2), the stator (1) comprising a core and an outer ring body (11) sleeved outside the core, a plurality of winding portions (111) being provided on the inner side of the outer ring body (11) extending to a central position, characterized in that, The outer ring body (11) has through holes (113) spaced apart on its outer wall. A pin (3) is inserted through the through hole (113). The bottom end of the pin (3) is fixed with an enameled wire, and the top end is soldered and fixed to the PCBA board.

2. The brushless motor of claim 1, wherein The winding part (111) is spacedly wound with three-phase copper coils, three same windings are spaced 120 o evenly distributed.

3. The brushless motor according to claim 1, characterized in that, Nine winding portions (111) are provided.

4. The brushless motor of claim 1, wherein, The bottom of the outer ring body (11) is provided with a plurality of outwardly protruding transition portions (112) at intervals.

5. The brushless motor of claim 1, wherein, The outer ring body (11) also has a protruding ear at the upper end of its outer wall.

6. The brushless motor of claim 1, wherein, Three through holes (113) are provided.

7. A brushless electric motor according to any one of claims 1-6, characterized in that The top of the outer ring body (11) is provided with positioning posts (114) at even intervals.

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