Sawtooth-shaped piercing terminal connecting structure

Abstract

The utility model relates to the technical field of water pump manufacturing, in particular to a sawtooth-shaped piercing terminal connecting structure, which is characterized in that a plastic framework is pre-pressed in advance, a three-phase wire is led out to pass through the inside of a terminal during stator winding, strip-shaped spikes on a terminal sheet are pierced into an enameled copper wire through subsequent cold extrusion, paint removal is not needed, and connection can be realized through one-time cold pressing. The reliability is high; comprising a stator structure; the motor further comprises a terminal structure, and the terminal structure is installed on the stator structure and conducts current.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump manufacturing, in particular to a serrated puncturing terminal connection structure. Background Art

[0002] A water pump is a machine that transports liquids or increases the pressure of liquids. It transmits the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspension emulsions, and liquid metals, etc.

[0003] For the existing terminal connection structure, such as the stator assembly, motor, and electrical device disclosed in the utility model patent with the application number 202020204053.6, its main structure includes a stator skeleton body, a boss structure, and a puncturing terminal structure. A boss structure is arranged at the end of the stator skeleton body. The puncturing terminal structure includes a pin body, a connecting part, and a puncturing part. The pin body is connected to the puncturing part through the connecting part and the pin body and the puncturing part are in different planes. The puncturing terminal structure is installed on the boss structure. The enameled wire can be led out through the boss structure and into the puncturing part, and the puncturing part can puncture the enameled skin of the enameled wire to conduct the enameled wire and the puncturing terminal structure; during installation, the puncturing terminal structure is vertically placed in the boss structure of the stator assembly, and at the same time, the connecting part located at the bottom of the puncturing terminal structure is pressed by the sheath structure to fix the pin to prevent it from moving during injection molding. The enameled wire is led out from the wire outlet groove of the boss structure, and the puncturing part is located at the outer circle of the stator skeleton body, which can make the puncturing part puncture the enameled skin of the enameled wire more simply and quickly.

[0004] However, the phase wires of the motor need to be led out and connected to the controller or the connector. The phase wires of the pin-wound stator are generally round copper wires. The common connection methods are soldering, resistance welding, press-in type, etc. The processes are all relatively complex, difficult to control, and at the same time, the cost is high. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a serrated puncturing terminal connection structure with high reliability, which pre-presses into a plastic skeleton in advance, leads out the three-phase wires through the inside of the terminal during stator winding, and then through cold extrusion, makes the strip-shaped spikes on the terminal piece pierce into the enameled copper wire, without the need for de-enameling, and can be connected by one cold pressing.

[0006] A serrated puncturing terminal connection structure of the utility model includes a stator structure; it also includes a terminal structure, which is installed on the stator structure and conducts current; the terminal structure is pre-pressed into the stator structure in advance, the three-phase wires are led out through the terminal structure during stator winding, and then through cold extrusion, the strip-shaped spikes on the terminal structure pierce into the enameled copper wire.

[0007] Preferably, the stator structure includes a plastic skeleton, a boss, and a connecting seat. The plastic skeleton is installed at the motor working position, the boss is installed on the plastic skeleton, and the connecting seat is installed on the plastic skeleton and has a positioning groove opened thereon; the terminal structure is pre-pressed into the positioning groove of the connecting seat, and the boss is led out through the terminal structure, facilitating the terminal structure to conduct the current out.

[0008] Preferably, the terminal structure includes an insertion plate, connecting teeth, a connecting plate, and multiple groups of protruding spikes. The insertion plate is pre-pressed into the positioning groove of the connecting seat, the connecting teeth are installed on the insertion plate, the connecting plate is installed on the insertion plate, and multiple groups of protruding spikes are all installed on the connecting plate; the insertion plate is pre-pressed into the positioning groove of the connecting seat, the connection effect between the insertion plate and the plastic skeleton is enhanced through the connecting teeth to prevent the insertion plate from falling off, and then 14 is wound around the connecting plate, enabling the protruding spikes to pierce the enameled coating of 14, and the current is conducted out through the protruding spikes and the insertion plate.

[0009] Preferably, the protruding spikes are in a triangular shape; when the current is relatively small, after the protruding spikes penetrate into the copper wire, the part in contact with the copper wire is the conduction area, saving the time for removing the enamel from the enameled wire and being more convenient to use.

[0010] Preferably, the protruding spikes are in a semi-circular shape; when encountering large currents and harsh working conditions, the enameled wire needs to be de-enameled first and then pressed in. The semi-circular shape has a larger contact area when crimping the de-enameled enameled wire and can conduct a larger current.

[0011] Compared with the prior art, the beneficial effect of the present utility model is that the terminal structure is pre-pressed into the stator structure in advance. When the stator is wound with wires, the three-phase wires are led out through the terminal structure, and subsequently, through cold extrusion, the strip-shaped spikes on the terminal structure penetrate into the enameled copper wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is an isometric structural schematic diagram of the present utility model;

[0013] Figure 2 is a partial enlarged isometric structural schematic diagram of 03 of the present utility model;

[0014] Figure 3 is an isometric structural schematic diagram of 03 of the present utility model;

[0015] Figure 4 is a puncture cross-sectional structural schematic diagram of the non-enameled terminal of the present utility model;

[0016] Figure 5 is a puncture cross-sectional structural schematic diagram of the terminal after crimping with the enamel removed of the present utility model.

[0017] Reference numerals in the drawings: 01, stator structure; 11, plastic skeleton; 12, boss; 13, connecting seat; 02, terminal structure; 21, plug board; 22, connecting teeth; 23, connecting plate; 24, raised spikes. Detailed implementation mode

[0018] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0019] Embodiment 1

[0020] A serrated puncturing terminal connection structure of the present invention includes a stator structure 01; it also includes a terminal structure 02, and the terminal structure 02 is installed on the stator structure 01 and conducts current; the stator structure 01 includes a plastic skeleton 11, a boss 12 and a connecting seat 13. The plastic skeleton 11 is installed at the motor working position, the boss 12 is installed on the plastic skeleton 11, the connecting seat 13 is installed on the plastic skeleton 11 and a positioning groove is opened on the connecting seat 13; the terminal structure 02 includes a plug board 21, connecting teeth 22, a connecting plate 23 and multiple groups of raised spikes 24. The plug board 21 is pre-pressed in the positioning groove of the connecting seat 13, the connecting teeth 22 are installed on the plug board 21, the connecting plate 23 is installed on the plug board 21, and multiple groups of raised spikes 24 are all installed on the connecting plate 23; it is also included that the raised spikes 24 are triangular; when it works, first, the plug board 21 is pre-pressed into the positioning groove of the connecting seat 13, and the connection effect between the plug board 21 and the plastic skeleton 11 is enhanced through the connecting teeth 22 to prevent the plug board 21 from falling off. Then, 14 is wound around the connecting plate 23 to make the raised spikes 24 puncture the enameled skin of 14, and the current is led out through the raised spikes 24 and the plug board 21. When the current passing through is small, the raised spikes 24 are triangular. After the raised spikes 24 penetrate into the copper wire, the part in contact with the copper wire is the conduction area, saving the time for removing the enamel from the enameled wire and being more convenient to use.

[0021] Embodiment 2

[0022] Such as Figures 1 to 5As shown, a zigzag puncturing terminal connection structure of the present utility model is based on Embodiment 1; it further includes that the raised spike 24 is semi-circular; during its operation, first, the insertion plate 21 is pre-pressed into the positioning groove of the connection base 13, and the connection teeth 22 enhance the connection effect between the insertion plate 21 and the plastic skeleton 11 to prevent the insertion plate 21 from falling off. Then,

[14] is wound around the connection plate 23, and the raised spike 24 punctures

[14] . The current is led out through the raised spike 24 and the insertion plate 21. When the current passing through is relatively small, the raised spike 24 is triangular. After the raised spike 24 penetrates into the copper wire, the part in contact with the copper wire is the conduction area, saving the time for removing the paint from the enameled wire and being more convenient to use. When encountering large currents and harsh working conditions, it is replaced with a semi-circular raised spike 24. It is necessary to first remove the paint from the enameled wire and then press it in. The semi-circle has a larger contact area when crimping the enameled wire after removing the paint and can conduct a larger current.

[0023] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model. It should be noted that there are some unclear parts in the original text, such as "

[14] " which are marked for further clarification in the translation.

Claims

1. A sawtooth piercing terminal connection structure, comprising a stator structure (01); characterized in that: It also includes a terminal structure (02), which is installed on the stator structure (01) and conducts current.

2. A sawtooth piercing terminal connection structure according to claim 1, characterized in that: The stator structure (01) comprises a plastic frame (11), a boss (12) and a connecting seat (13); the plastic frame (11) is mounted on a motor working position, the boss (12) is mounted on the plastic frame (11), the connecting seat (13) is mounted on the plastic frame (11), and a positioning groove is provided on the connecting seat (13).

3. A sawtooth piercing terminal connection structure as claimed in claim 2, characterized in that: The terminal structure (02) comprises an insert plate (21), connecting teeth (22), a connecting plate (23) and a plurality of groups of protruding spikes (24); the insert plate (21) is pre-pressed in a positioning groove of a connecting seat (13); the connecting teeth (22) are mounted on the insert plate (21); the connecting plate (23) is mounted on the insert plate (21); and the plurality of groups of protruding spikes (24) are mounted on the connecting plate (23).

4. A sawtooth piercing terminal connection structure as claimed in claim 3, characterized in that: The raised spike (24) is also triangular in shape.

5. A sawtooth piercing terminal connection structure as claimed in claim 3, characterized in that: The raised spike (24) is also semicircular.

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