Stator conduction connection structure and motor

Abstract

The utility model provides a stator conduction connection structure and a motor, and relates to the technical field of external rotor motors, the stator conduction connection structure comprises a stator iron core, an insulation upper wire frame and an insulation lower wire frame which are designed in a split mode, the insulation upper wire frame is located above the stator iron core, and the insulation lower wire frame is located below the stator iron core; a slot bottom insulator is mounted in the stator core; an enameled wire clamping groove is formed in the insulating upper wire frame and is used for fixing a tap wire of a stator winding in the winding process; the insulating upper wire frame is further provided with a piercing terminal cavity, and a bidirectional piercing terminal is assembled in the piercing terminal cavity to pierce an insulating layer of the enameled wire, so that electrical conduction with the bidirectional piercing terminal is achieved. The beneficial effects of the utility model are that through the optimization of the structure, the motor stator winding can be rapidly connected with the controller end through the upper wire frame, the puncture terminal, the printed circuit board, the wiring terminal and the like, the automatic assembly efficiency of the product is improved, the manufacturing cost is reduced, and the reliability and the comprehensive performance grade of the whole machine product are improved.

Description

Technical Field

[0001] This utility model relates to the field of external rotor motor technology, and in particular to a stator conduction connection structure and motor. Background Technology

[0002] In the field of electric motors, a typical structure includes a stator, rotor, and housing, with the stator comprising the stator core, insulated wire frame, and windings. However, the connection of the stator winding leads and their connection to the control terminals is extremely complex, often relying on manual operation by employees. This includes processes such as tidying and splicing the wire ends after winding, removing the varnish, and tapping and soldering. This method is extremely inefficient and prone to incorrect wiring, leading to product scrap and making automated manufacturing impossible. Furthermore, the intricate wiring at the ends poses challenges to stator insulation. Although this can be addressed by adding bushings, the pass rates for phase-to-phase, turn-to-turn, and PDIV insulation are low.

[0003] To address these practical problems, industry professionals have devoted considerable effort to structural design, experimenting with numerous connection methods; however, the improvement has been limited. Therefore, improving the structural design and manufacturing processes of the motor stator and windings has become an urgent priority, requiring a leading edge. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and provides a stator conduction connection structure and motor, which helps to improve the efficiency of automated product assembly, reduce manufacturing costs, and improve the reliability of the whole product.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A stator conduction connection structure includes a stator core, an upper insulating frame, and a lower insulating frame, all designed in a split configuration. The upper insulating frame is located above the stator core, and the lower insulating frame is located below the stator core. Slot bottom insulation is installed in the stator core. The upper insulating frame is provided with enameled wire slots for fixing the tap wires of the stator winding during winding. The upper insulating frame is also provided with a piercing terminal cavity, in which a bidirectional piercing terminal is assembled to pierce the insulation layer of the enameled wire, thereby achieving electrical conduction with the bidirectional piercing terminal.

[0007] Furthermore, the insulated upper wire rack is equipped with a snap-fit ​​structure for securing the insulation at the bottom of the slot.

[0008] Furthermore, it also includes a printed circuit board with a double-sided circuit design, which has connection holes corresponding to the piercing terminals, and a solder layer at the contact point between the bidirectional piercing terminals and the connection holes to enhance the conductivity between the bidirectional piercing terminals and the printed circuit board.

[0009] Furthermore, the printed circuit board is soldered with three-phase terminals, which allow for quick connection and conduction with the controller, thereby improving assembly efficiency.

[0010] This utility model also claims protection for an electric motor, including a stator portion and a rotor portion disposed opposite to it, the stator portion including the aforementioned stator conducting connection structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The stator conduction connection structure of this utility model is applicable to all motors. Through structural optimization, the design includes enameled wire slots on the upper insulated wire frame and piercing terminal cavities for press-fitted piercing terminals. It also features a printed circuit board with a double-sided circuit design. By piercing the terminals bidirectionally, the motor stator windings can be quickly connected to the controller via the upper wire frame, piercing terminals, printed circuit board, and wiring terminals. This improves the efficiency of automated assembly, reduces manufacturing costs, and enhances the reliability and overall performance of the entire product. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is an exploded view of the stator conduction connection structure;

[0015] Figure 2 This is a schematic diagram of the structure of the insulated upper wire frame;

[0016] Figure 3 This is a schematic diagram of the structure of the insulated lower wire frame;

[0017] Figure 4 This is a schematic diagram showing the combined state of the stator core, the upper insulated lead frame, and the lower insulated lead frame;

[0018] Figure 5 This is a schematic diagram of the bidirectional piercing terminal structure;

[0019] Figure 6 This is a schematic diagram of the insulation structure at the bottom of the trench;

[0020] Figure 7 A schematic diagram of the printed circuit board and three-phase terminals;

[0021] Figure 8 This is a schematic diagram of the structure of a three-phase terminal block;

[0022] Figure 9 This is a schematic diagram of the structure in which the motor is connected to the controller via three-phase terminals.

[0023] In the picture:

[0024] 1. Stator core; 2. Insulated upper wire frame; 201. Enamelled wire slot; 202. Piercing terminal cavity; 203. Clip structure; 3. Insulated lower wire frame; 4. Slot bottom insulation; 5. Bidirectional piercing terminal; 6. Printed circuit board; 7. Three-phase terminal block; 8. Stator winding; 9. Controller; 10. Stator section. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] like Figures 1 to 9 As shown, this utility model claims protection for a stator conduction connection structure, including a stator core 1, an upper insulating frame 2, and a lower insulating frame 3, all designed in a split configuration. The upper insulating frame 2 is located above the stator core 1, and the lower insulating frame 3 is located below the stator core 1. The stator core 1 has corresponding slot positions for installing slot bottom insulation 4. To enhance stability, the upper insulating frame 2 is provided with a snap-fit ​​structure 203 for securing the slot bottom insulation 4, so that the slot bottom insulation 4 is firmly secured in the snap-fit ​​structure 203. During winding, the slot bottom insulation 4 will not move or fly around, thus improving the product qualification rate.

[0027] The insulating upper wire frame 2 is equipped with an enameled wire slot 201 for fixing the tap wire of the stator winding 8 during the winding process, thereby improving manufacturing efficiency. The insulating upper wire frame 2 is also equipped with a piercing terminal cavity 202, in which a bidirectional piercing terminal 5 is assembled. The bidirectional piercing terminal 5 is fixed in the piercing terminal cavity 202 by press fitting. The bidirectional piercing terminal 5 is used to pierce the insulation layer of the enameled wire, thereby realizing electrical conductivity between the enameled wire and the bidirectional piercing terminal 5, which is convenient for installation.

[0028] This embodiment also includes a printed circuit board 6 with a double-sided circuit design. The printed circuit board 6 is provided with connection holes corresponding to the piercing terminals, and a solder layer is provided at the contact point between the bidirectional piercing terminals 5 and the connection holes to enhance the conductivity between the piercing terminals and the printed circuit board.

[0029] In addition, a three-phase terminal block 7 is soldered onto the printed circuit board 6, which allows for quick connection and conduction with the controller 9, thereby improving assembly efficiency.

[0030] like Figure 9As shown, this utility model also protects an electric motor, including a stator part and a rotor part 10 arranged opposite to it. The stator part includes the stator conduction connection structure described above. The printed circuit board 6 of the stator part is quickly connected to the controller 9 through the three-phase terminal 7, thereby improving assembly efficiency.

[0031] Compared with traditional structures, the stator conduction connection structure of this utility model is applicable to all motors. Through structural optimization, the upper insulation frame 2 is designed with enameled wire slots 201 and piercing terminal cavities 202 for press-fitting piercing terminals. A printed circuit board 6 with double-sided circuit design is also designed. Through bidirectional piercing of the piercing terminals, the motor stator windings can be quickly connected to the controller 9 via the upper insulation frame 2, piercing terminals, printed circuit board 6, and wiring terminals. This improves the efficiency of automated assembly, reduces manufacturing costs, and enhances the reliability and overall performance level of the entire product.

[0032] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stator lead-through connection structure, characterized by: The stator core (1), the upper insulating frame (2), and the lower insulating frame (3) are designed in a split manner. The upper insulating frame (2) is located above the stator core (1), and the lower insulating frame (3) is located below the stator core (1). The stator core (1) is equipped with slot bottom insulation (4). The upper insulating frame (2) is provided with enameled wire slots (201) for fixing the tap wires of the stator winding (8) during the winding process. The upper insulating frame (2) is also provided with a piercing terminal cavity (202). The piercing terminal cavity (202) is equipped with a bidirectional piercing terminal (5) to pierce the insulation layer of the enameled wire, thereby achieving electrical conduction with the bidirectional piercing terminal (5).

2. The stator lead-through connection according to claim 1, characterized in that The insulating upper wire frame (2) is provided with a snap-fit ​​structure (203) for securing the bottom insulation (4) of the slot.

3. The stator lead-through connection according to claim 1, characterized in that It also includes a printed circuit board (6) with a double-sided circuit design, which has connection holes corresponding to the piercing terminals, and a solder layer is provided at the contact point between the bidirectional piercing terminals (5) and the connection holes to enhance the conductivity between the bidirectional piercing terminals (5) and the printed circuit board (6).

4. The stator lead-through connection according to claim 3, characterized in that The printed circuit board (6) is soldered with three-phase terminals (7), which are quickly connected to the controller (9) through the three-phase terminals (7), thereby improving assembly efficiency.

5. An electric machine comprising a stator portion and an oppositely disposed rotor portion (10), characterised in that: The stator portion includes the stator conduction connection structure as described in any one of claims 1 to 4.

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