A laser welding wire plate structure

Abstract

This utility model discloses a wire board structure that facilitates laser welding. It includes: a stator core with copper wire windings, each winding having several copper wire extensions located on the same side of the stator core and circumferentially distributed about its central axis; a wire board support mounted on the stator core; several conductive lugs fixed to the wire board support, each corresponding to a copper wire extension and circumferentially distributed along the outer edge of the support; and wire board holes located on the conductive lugs and mating with the copper wire extensions, the holes interlocking with the extensions. The advantages of this utility model are: improved assembly efficiency; ability to shield the copper wire from laser damage, preventing burns to the copper wire's lower end coating and preventing short circuits.

Description

Technical Field

[0001] This utility model relates to the technical field of stator processing, and in particular to a structure for facilitating laser welding of wire plates. Background Technology

[0002] The stator is the stationary core component in an electric motor or generator. It mainly consists of a frame, stator core, and windings. Its core function is to generate a rotating magnetic field or to convert electromagnetic energy.

[0003] Currently, in the domestic market, the copper wires and circuit boards of stator components are assembled by resistance welding. This process has the following problems: 1. The welding tooling and electrodes are consumables and need to be replaced regularly; 2. Welding requires a pressing stroke, which can easily lead to insufficient space for welding.

[0004] In summary, there is a need for a laser-welded wire board structure that can improve assembly efficiency. Utility Model Content

[0005] This invention aims to overcome the shortcomings of existing technologies where copper wires and wire boards are assembled using resistance welding, which requires periodic electrode replacement and cannot be welded due to insufficient space. It provides a wire board structure that can improve assembly efficiency and facilitate laser welding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A structure for easy laser welding of wire boards, comprising: A stator core, wherein a copper wire winding is provided on the stator core, and the copper wire winding has a plurality of copper wire protrusions, the copper wire protrusions being located on the same side of the stator core and distributed circumferentially about the central axis of the stator core; A wire plate bracket, which is mounted on the stator core; A plurality of conductive lugs are fixed on the wire board support, and each conductive lug corresponds to a copper wire protrusion end. The conductive lugs are circumferentially distributed on the outer edge of the wire board support. A wire plate hole is provided on the conductive lug and matches the protruding end of the copper wire. The wire plate hole and the protruding end of the copper wire are inserted into each other.

[0007] During assembly, first align the wire plate holes on the wire plate bracket with the protruding ends of the copper wires on the stator core, then install the wire plate bracket onto the stator core, inserting the protruding ends of the copper wires into the wire plate holes, and finally welding the protruding ends of the copper wires at the wire plate holes to secure them. This completes the assembly and improves assembly efficiency. Through this structural optimization, welding can be performed immediately after the wire plate bracket is placed, eliminating the need to identify the wiring method and significantly improving assembly efficiency.

[0008] Preferably, the protruding end of the copper wire is fixed inside the hole in the circuit board by laser welding. The conductive lug design blocks the laser, preventing it from burning the enamel film at the lower end of the copper wire and preventing short circuits. Therefore, the protruding end of the copper wire can be fixed in the hole in the circuit board by laser welding, greatly improving assembly efficiency.

[0009] Preferably, a guide radius is provided at the port of the wire plate hole, and the guide radius is located at the port of the wire plate hole near the end of the copper wire winding. The design of the guide radius improves the smoothness of the copper wire protrusion end during the insertion into the wire plate hole, making the operation simple, convenient, time-saving, and labor-saving.

[0010] Preferably, an extension tube is provided at the end of the wire plate hole furthest from the copper wire winding. This extension tube design increases the contact area between the copper wire and the wire plate hole, improving the welding and fixing effect.

[0011] Preferably, the wire board bracket is fixed with a first terminal, a second terminal, and a third terminal, which are located on the side of the wire board bracket opposite to the stator core. The conductive lugs are divided into three groups and electrically connected to the first terminal, the second terminal, and the third terminal, respectively. The first terminal, the second terminal, and the third terminal are the U phase, the V phase, and the W phase, respectively, for connecting to a three-phase power supply.

[0012] Preferably, the wire board bracket is further fixed with several pins, which are circumferentially distributed on the outer edge of the wire board bracket. The stator core has slots that match the pins, and the pins and slots are interlocked. During installation, the pins of the wire board bracket are aligned with the slots on the stator core, and then the two are fastened together. The connection method is simple and easy to operate, facilitating installation and disassembly, and reducing the difficulty of later maintenance and repair.

[0013] The beneficial effects of this utility model are: improved assembly efficiency; ability to shield the laser, preventing laser burns to the enamel film at the lower end of the copper wire and preventing short circuits; improved smoothness of the copper wire protrusion during insertion into the wire board hole, making operation simple, convenient, time-saving, and labor-saving; improved welding and fixing effect; simple and easy-to-operate connection method, convenient installation and disassembly, reducing the difficulty of later maintenance and repair. Attached Figure Description

[0014] Figure 1 It is a 3D view of the wire board bracket; Figure 2 This is a top view of the line board bracket; Figure 3 This is a schematic diagram of the assembly of the wire board bracket on the stator core; Figure 4 yes Figure 2Sectional view at point AA; Figure 5 This is a schematic diagram of the insertion of the protruding end of the copper wire into the hole of the wire board.

[0015] In the diagram: 1. Stator core, 2. Copper wire extension end, 3. Wire board support, 4. Conductive lug, 5. Wire board hole, 6. Guide fillet, 7. Extension tube, 8. First terminal, 9. Second terminal, 10. Third terminal, 11. Pin, 12. Slot. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] like Figures 1-5 In the embodiments described above, a structure for facilitating laser welding of a wire board includes: Stator core 1, on which a copper wire winding is provided, and a number of copper wire protrusion ends 2 are provided on the copper wire winding. The copper wire protrusion ends 2 are located on the same side of the stator core 1 and are circumferentially distributed about the central axis of the stator core 1. The wire plate bracket 3 is assembled on the stator core 1; Several conductive lugs 4 are fixed on the wire board support 3. The conductive lugs 4 correspond one-to-one with the copper wire protrusion ends 2. The conductive lugs 4 are circumferentially distributed on the outer edge of the wire board support 3. The wire plate hole 5 is set on the conductive lug 4 and matches the copper wire protrusion end 2. The wire plate hole 5 and the copper wire protrusion end 2 are inserted into each other.

[0018] The protruding end 2 of the copper wire is fixed inside the hole 5 of the wire plate by laser welding.

[0019] A guide fillet 6 is provided at the port of the wire plate hole 5. The guide fillet 6 is located at the port of the wire plate hole 5 near the end of the copper wire winding.

[0020] An extension tube 7 is provided at the end of the wire plate hole 5 away from the copper wire winding.

[0021] The first terminal 8, the second terminal 9 and the third terminal 10 are fixed on the wire board bracket 3. The first terminal 8, the second terminal 9 and the third terminal 10 are located on the side of the wire board bracket 3 facing away from the stator core 1. The conductive lugs 4 are divided into three groups and are electrically connected to the first terminal 8, the second terminal 9 and the third terminal 10 respectively.

[0022] The line board bracket 3 is also fixed with several pins 11. The pins 11 are circumferentially distributed on the outer edge of the line board bracket 3. The stator core 1 is provided with slots 12 that match the pins 11. The pins 11 and slots 12 are inserted and snapped together.

[0023] During assembly, first align the wire board hole 5 on the wire board bracket 3 with the copper wire extension end 2 on the stator core 1, then install the wire board bracket 3 onto the stator core 1 through the cooperation of the pin 11 and the slot 12, insert the copper wire extension end 2 into the wire board hole 5, and weld and fix the copper wire extension end 2 at the wire board hole 5 to complete the assembly.

[0024] The design of the conductive lug 4 can block the laser, prevent the laser from burning the paint film at the lower end of the copper wire, and prevent the copper wire from short-circuiting. Therefore, the protruding end 2 of the copper wire can be fixed in the hole 5 of the wire plate by laser welding.

Claims

1. A structure for easy laser welding of a wire board, characterized in that, include: Stator core (1), on which a copper wire winding is provided, and a plurality of copper wire extension ends (2) are provided on the copper wire winding. The copper wire extension ends (2) are located on the same side of the stator core (1) and are circumferentially distributed about the central axis of the stator core (1). A wire plate bracket (3) is mounted on the stator core (1); A number of conductive lugs (4) are fixed on the wire board support (3). The conductive lugs (4) correspond one-to-one with the copper wire protrusion end (2). The conductive lugs (4) are distributed circumferentially on the outer edge of the wire board support (3). The wire plate hole (5) is provided on the conductive lug (4) and matches the copper wire extension end (2). The wire plate hole (5) and the copper wire extension end (2) are inserted into each other.

2. The structure for easy laser welding of a wire board according to claim 1, characterized in that, The copper wire extension end (2) is fixed inside the hole (5) of the wire plate by laser welding.

3. The laser-welded wire board structure according to claim 1, characterized in that, A guide fillet (6) is provided at the port of the wire plate hole (5), and the guide fillet (6) is located at the port of the wire plate hole (5) near one end of the copper wire winding.

4. The laser-welded wire board structure according to claim 3, characterized in that, An extension tube (7) is provided at the end of the wire plate hole (5) away from the copper wire winding.

5. A laser-welded wire board structure according to any one of claims 1-4, characterized in that, The first terminal (8), the second terminal (9) and the third terminal (10) are fixed on the wire board bracket (3). The first terminal (8), the second terminal (9) and the third terminal (10) are located on the side of the wire board bracket (3) facing away from the stator core (1). The conductive lug (4) is divided into three groups and is electrically connected to the first terminal (8), the second terminal (9) and the third terminal (10) respectively.

6. A laser-welded wire board structure according to any one of claims 1-4, characterized in that, The wire board bracket (3) is also fixed with a number of pins (11). The pins (11) are distributed circumferentially on the outer edge of the wire board bracket (3). The stator core (1) is provided with slots (12) that match the pins (11). The pins (11) and slots (12) are inserted and snapped together.

Images