Connecting structure of stator wire and lug plate for motor

Abstract

The utility model discloses a connecting structure of a stator wire and a lug plate for a motor. Belongs to the technical field of micromotors. According to the technical key points, the stator comprises a stator framework and a plurality of lug plates connected to the stator framework, each lug plate is connected with a connecting part, and a free end of a stator winding located on the stator framework is fixed with the connecting part through a piercing terminal and realizes electrical conduction; the utility model aims to provide the connecting structure of the stator wire and the lug plate for the motor, which is compact in structure, convenient to operate and capable of effectively reducing the cost of a micro motor. The method is used for micromotor manufacturing.

Description

A connection structure between stator conductors and terminals for an electric motor Technical Field

[0001] This utility model relates to a connection structure for micro motor components, and more specifically, to a connection structure for stator wires and terminals of a motor. Background Technology

[0002] Currently, stator windings typically use enameled copper wire. Although this is more expensive, it simplifies the subsequent connection with the connecting plates to achieve electrical conductivity, and the entire process can be automated. The specific operation involves bending the free end of the stator winding around the connecting plate, burning off the enameled wire sheath with a laser, and then tinning it to achieve electrical conductivity between the stator winding and the connecting plate.

[0003] However, with increasing market competition and industry consolidation, the production of micro-motors still needs to further reduce costs. As is well known to those skilled in the art, aluminum enameled wire is cheaper than copper enameled wire, but aluminum enameled wire is difficult to tin and is prone to peeling off. This means that using aluminum enameled wire cannot achieve oxidation prevention and reliable connection through tinning. Therefore, there is an urgent need to develop a solution that can achieve a reliable connection between aluminum enameled wire and the connector. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the prior art by providing a compact, easy-to-operate connection structure for stator wires and terminals of a motor that can effectively reduce the cost of micro motors.

[0005] The technical solution of this utility model is implemented as follows: a connection structure between stator conductors and terminals for a motor includes a stator frame and a plurality of terminals connected to the stator frame. The terminals are connected to a connecting part, and the free end of the stator winding located on the stator frame is fixed to the connecting part by a piercing terminal and achieves electrical conduction.

[0006] In the above-mentioned connection structure between stator conductors and terminals for motors, the connection part and the terminals are integrally formed, and the connection part is formed by cutting and bending a portion of the terminals.

[0007] In the above-described connection structure of stator conductors and terminals for a motor, the terminals are connected to circuit elements, and the circuit elements and the free ends of the stator windings are fixed to the connection portion through pierced terminals to achieve electrical conduction. Preferably, the circuit element is an inductor.

[0008] In the above-mentioned connection structure of stator conductor and terminal block for motor, the piercing connection between the piercing terminal and the free end of the stator winding is surrounded by an anti-oxidation layer.

[0009] In the above-mentioned connection structure between stator conductors and terminals for an electric motor, the anti-oxidation layer is a heat shrink tubing.

[0010] This invention, employing the aforementioned structure, achieves reliable electrical connection between the stator winding and the connection by setting a connecting portion on the terminal piece and then piercing the terminal. Piercing the terminal eliminates the need for the conventional step of laser-burning the insulation, while simultaneously ensuring a stable connection between the free end of the stator winding and the connection. This allows aluminum enameled wire to replace copper enameled wire, thereby reducing the production cost of micro-motors. Attached Figure Description

[0011] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.

[0012] Figure 1 is a structural schematic diagram of Embodiment 1 of this utility model;

[0013] Figure 2 is one of the structural schematic diagrams of the connector of this utility model;

[0014] Figure 3 is a second schematic diagram of the structure of the connector of this utility model;

[0015] Figure 4 is a structural schematic diagram of Embodiment 2 of this utility model;

[0016] Figure 5 is a schematic diagram of the wiring piece in Embodiment 2 of this utility model.

[0017] In the diagram: 1. Stator frame; 2. Connecting piece; 3. Connecting part; 4. Piercing terminal; 5. Anti-oxidation layer; 6. Circuit element. Detailed Implementation

[0018] Example 1

[0019] Referring to Figure 1, the present invention provides a connection structure for stator conductors and terminals for a motor, comprising a stator frame 1 and a plurality of terminals 2 connected to the stator frame 1. Each terminal 2 is connected to a connecting part 3. The free end of the stator winding located on the stator frame 1 is fixed to the connecting part 3 through a piercing terminal 4 and thus achieves electrical conduction.

[0020] Preferably, the connecting part 3 and the terminal piece 2 are integrally formed, and the connecting part 3 is formed by cutting and bending a portion of the terminal piece 2. Which part of the terminal piece is used to cut and bend the connecting part depends on the specific requirements, as long as it does not affect the original function of the terminal piece. As shown in Figures 2 and 3, for example, it can be bent from the side of the terminal piece or cut and bent from the middle of the connection between the terminal piece and the frame. After clearly understanding the innovative points of this utility model, these variations are readily apparent to those skilled in the art.

[0021] Preferably, the piercing connection between the piercing terminal 4 and the free end of the stator winding is surrounded by an anti-oxidation layer 5. Providing an anti-oxidation layer can improve the service life of the connection and the stability of the electrical connection. Of course, if the stator winding uses copper wire, an anti-oxidation layer is not required.

[0022] More preferably, the anti-oxidation layer 5 is a heat shrink tubing. In this embodiment, the stator winding uses aluminum enameled wire, so an anti-oxidation layer is required. The heat shrink tubing is preferably a double-walled heat shrink sleeve, whose inner hot melt adhesive can effectively cover the contact parts of the pierced terminals, connections, and wires, thereby effectively preventing oxidation.

[0023] In use, place the free end of the stator winding wound on the stator frame at the connection part according to the design requirements, then connect the stator winding and the connection part into one unit by piercing the terminal to achieve electrical conduction, and finally put on the double wall heat shrink tubing.

[0024] Example 2

[0025] Referring to Figures 4 and 5, the connection structure of the stator conductor and the terminal block for a motor according to this utility model is basically the same as that of Embodiment 1. The difference is that the terminal block 2 is connected to a circuit element 6. The circuit element 6 and the free end of the stator winding are fixed to the connection part 3 through the pierced terminal 4 and achieve electrical conduction. In this embodiment, the circuit element is an inductor. In the prior art, inductors are soldered to the terminal block with tin. However, by using the connection method of this embodiment, the electrical conduction between the stator winding and the inductor and the connection point can be directly achieved by piercing the terminal block, eliminating the need to solder the stator winding and the inductor pins to the terminal block separately. This simplifies the process and reduces production costs. The shape of the terminal block can be adapted to specific needs, as long as the requirements are met.

[0026] In this embodiment, the stator winding uses copper enameled wire, so no anti-oxidation layer is needed. The pierced terminal can be used as a new connection part to realize electrical connection with external circuits and circuit components.

[0027] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.

Claims

1. A connection structure for stator conductors and terminals for an electric motor, comprising a stator frame (1) and a plurality of terminals (2) connected to the stator frame (1), characterized in that, The terminal block (2) is connected to a connecting part (3). The free end of the stator winding located on the stator frame (1) is fixed to the connecting part (3) through the piercing terminal (4) and achieves electrical conduction.

2. The connection structure between stator conductors and terminals for a motor according to claim 1, characterized in that, The connecting part (3) and the terminal block (2) are integrally formed. The connecting part (3) is formed by cutting and bending a portion of the terminal block (2).

3. The connection structure between the stator conductor and the terminal block for a motor according to claim 1, characterized in that, The terminal block (2) is connected to a circuit element (6), and the circuit element (6) and the free end of the stator winding are fixed to the connecting part (3) through the piercing terminal (4) and achieve electrical conduction.

4. The connection structure between stator conductors and terminals for a motor according to claim 1 or 3, characterized in that, The piercing terminal (4) is surrounded by an anti-oxidation layer (5).

5. The connection structure between the stator conductor and the terminal block for a motor according to claim 4, characterized in that, The anti-oxidation layer (5) is a heat shrink tubing.

6. The connection structure between the stator conductor and the terminal block for a motor according to claim 3, characterized in that, The circuit element (6) is an inductor.

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