Duplex winding low-voltage PCB stator structure

Abstract

The utility model discloses a duplex winding low-voltage PCB stator structure, which comprises a machine body shell, a PCB, a winding stator and skeletons, the end part of the winding stator is provided with the PCB in a welding manner, the winding stator is formed by assembling a plurality of skeletons, the winding stator is arranged in the middle of the inner part of the machine body shell, the side of the PCB is provided with a plurality of PCB positioning mark grooves, and the PCB positioning mark grooves are arranged in the machine body shell. And the inner side of the middle part of the PCB is provided with a hot jacket positioning mark groove. According to the utility model, the winding mode and the wiring are optimized, the winding of the T-shaped block is changed into a single-strand wire from a multi-strand wire, the winding of the single-strand wire is changed into a two-section duplex winding process, the winding directions of every two sections of iron cores are consistent, the current direction is ensured through PCB wiring, the winding rhythm is reduced, the wiring is changed into 12 wire ends which are welded on the PCB from the original 24 wire ends, and the wiring efficiency is improved. And meanwhile, the doubling time of workers is shortened, and the operation inconvenience is reduced. The outer circle of the framework and the outer circle of the PCB are designed according to corresponding notches reserved in the duplex winding process.

Description

Technical Field

[0001] This utility model relates to the field of stator structure, specifically a double-wound low-voltage PCB stator structure. Background Technology

[0002] The stator is the stationary component of a machine, consisting of three parts: the stator core, the stator windings, and the frame. The main function of the stator is to generate a rotating magnetic field, while the main function of the rotor is to be cut by magnetic lines of force in the rotating magnetic field, thereby generating (outputting) current.

[0003] For example, the authorized patent CN105449887B (stator structure) includes a stator core and windings. The stator structure has a fixing part near its radially outer portion. The fixing part has stator mounting holes and support holes. The stator mounting holes are used to mount other components on the stator structure, and the support holes are used to fix and support the stator structure. The stator mounting holes and support holes are independent of each other. The stator structure provided by this invention adopts a four-legged support and two-point fixing form, making the stator structure more stable during operation. Furthermore, the stator fixing holes and support spring fixing holes are independent, ensuring that their structures do not affect each other. In this invention, the center of gravity of the stator structure is adjusted by adjusting the thickness of the support spring fixing holes, and the positions of the windings and stator mounting holes are also adjusted, further improving the stability of the stator structure during operation.

[0004] The aforementioned existing technologies use low-voltage servo motors with large current and thick enameled wires. They typically use multiple strands of enameled wires wound together and require manual removal of the enamel, resulting in low production efficiency. Furthermore, the wiring process is cumbersome for employees, takes a long time, and the stator heat fitting is not convenient enough, making it impossible to accurately position the heat fitting process. Utility Model Content

[0005] The purpose of this utility model is to provide a double-wound low-voltage PCB stator structure to solve the problems mentioned in the background art, such as the large current of the low-voltage servo motor, the thick enameled wire, the use of multiple strands of enameled wire for parallel winding, manual removal of enamel, low production efficiency, cumbersome wiring for employees, long working time, inconvenient stator heat fitting, and inability to accurately position the heat fitting process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-wound low-voltage PCB stator structure, including a housing, a PCB, a wound stator and a frame, wherein the end of the wound stator is provided with a PCB by welding, the wound stator is assembled from multiple frames, and the wound stator is located in the center inside the housing, the side of the PCB is provided with multiple PCB positioning mark grooves, and the inner side of the middle of the PCB is provided with a heat fitting positioning mark groove.

[0007] In a further embodiment, the frame includes a terminal block, a stator core, and an induction plate;

[0008] The terminal block and the induction plate are respectively located at both ends of the stator core.

[0009] In a further embodiment, the side of the connector frame is provided with a plurality of enameled wire positioning slots, and the enameled wire positioning slots are correspondingly set with PCB positioning mark slots.

[0010] In a further embodiment, the bottom of the sensing plate is provided with an arc-shaped structure, and the sensing plate is located on the outside of the rotor.

[0011] In a further embodiment, the design of the outer circle of the connector frame and the outer circle of the PCB is designed to accommodate the corresponding notches reserved for the double-winding process, which correspond to the 12 enameled wire ends of the double-winding.

[0012] In a further embodiment, the two ends of the double-wound wire are respectively provided with an inlet head and an outlet head, the inlet head and the outlet head are respectively provided with corresponding positioning grooves for the enameled wire, and the enameled wire is directly soldered to the PCB from the notch portion.

[0013] In a further embodiment, the winding stator is configured as a can-forming structure, the PCB is configured as a structure with a large inner diameter and a small outer diameter, and the PCB is supported by an external step on the skeleton. Without affecting the enameled wire throwing, the design will be higher than the internal step to facilitate glue filling.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model optimizes the winding method and wiring. The T-shaped block winding is changed from multi-strand wire to single-strand wire, and the single-lobed winding is changed to a two-lobed double-connected winding process. The winding direction of each pair of iron core lobes is consistent. The current direction is ensured by PCB wiring, reducing the winding cycle. The wiring is changed from the original 24 wire ends parallel to 12 wire ends soldered on the PCB to meet the Y-type connection requirements, while reducing the wiring time and inconvenience of operation for employees.

[0016] 2. The design of the outer circle of the skeleton and the outer circle of the PCB in this utility model is tailored to the corresponding notches reserved in the double-winding process, which correspond to the 12 enameled wire ends of the double-winding. Special tooling facilitates positioning and welding, ensuring that the enameled wire is directly soldered to the PCB from the notch. Excess enameled wire is trimmed from the wound stator on the PCB, and the lead wires are soldered and fixed, followed by comprehensive testing. A marking groove is reserved in the inner hole of the PCB to facilitate identification of the wire exit direction during stator heat fitting, preventing significant differences in wire exit positions during heat fitting that could affect motor assembly.

[0017] 3. The stator of this utility model adopts a potting process to ensure the normal flow rate of the glue. The inner diameter of the PCB is as large as possible while ensuring the current, and the outer diameter is as small as possible. The outer step of the frame supports the PCB. Without affecting the enameled wire polishing, it is designed to be higher than the inner step to facilitate potting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a double-wound low-voltage PCB stator structure according to the present invention;

[0019] Figure 2 This is a side cross-sectional view of the present invention;

[0020] Figure 3 This is a front view of the wound stator of this utility model;

[0021] Figure 4 This is a schematic diagram of the PCB structure of this utility model;

[0022] Figure 5 This is a front view of the outer circle of the PCB of this utility model;

[0023] Figure 6 This is a top view of the PCB of this utility model;

[0024] Figure 7 This is the wiring diagram for the PCB star connection method (12 slots, 10 poles, 2-10P) of this utility model;

[0025] Figure 8 This is an overall view of the skeleton of this utility model;

[0026] Figure 9 This is a cross-sectional view of the skeleton of this utility model;

[0027] Figure 10 This is a top view of the skeleton of this utility model;

[0028] Figure 11 This is the front view of the skeleton of this utility model;

[0029] Figure 12 This is a side view of the skeleton of this utility model.

[0030] In the diagram: 1. Housing; 2. PCB; 3. Winded stator; 4. PCB positioning mark groove; 5. Heat fitting positioning mark groove; 6. Stator core; 7. Induction board; 8. Enamelled wire positioning groove; 9. Rotor; 10. Terminal block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Please see Figure 1-12 The present invention provides an embodiment of a double-wound low-voltage PCB stator structure, comprising a housing 1, a PCB 2, a wound stator 3, and a frame. The ends of the wound stator 3 are provided with the PCB 2 by welding. The wound stator 3 is assembled from multiple frames and is located in the center inside the housing 1. The sides of the PCB 2 are provided with multiple PCB positioning mark grooves 4, and the inner side of the middle of the PCB 2 is provided with a heat-shrink positioning mark groove 5.

[0033] The current direction is ensured by PCB2 wiring, reducing the winding cycle. The wiring is changed from the original 24 wire ends parallel to 12 wire ends soldered on PCB2, which facilitates the connection of current to the winding stator 3. The winding stator is assembled by the skeleton, and the winding stator 3 is protected by the housing 1. The PCB positioning mark slot 4 is used to install and position the enameled wire, and the heat fitting positioning mark slot 5 facilitates the identification of the wire exit direction during heat fitting, avoiding large differences in the wire exit position during heat fitting, which would affect the assembly of the motor.

[0034] Furthermore, the frame includes a terminal block 10, a stator core 6, and an induction plate 7;

[0035] The terminal block 10 and the induction plate 7 are respectively located at both ends of the stator core 6.

[0036] The terminal block 10 facilitates the connection of the enameled wire, the induction plate 7 is used to generate an electromagnetic field, and the stator core 6 is used to wind the wire.

[0037] Furthermore, the wiring bracket 10 is provided with multiple enameled wire positioning slots 8 on its side. The enameled wire positioning slots 8 are correspondingly set with the PCB positioning mark slots 4. The enameled wire positioning slots 8 are used to position the enameled wire during installation.

[0038] Furthermore, the bottom of the induction plate 7 is provided with an arc-shaped structure, and the induction plate 7 is located on the outside of the rotor 9.

[0039] Furthermore, the design of the outer circle of the connector frame 10 and the outer circle of the PCB2 is designed to accommodate the corresponding notches reserved for the double-winding process, which correspond to the 12 enameled wire ends of the double-winding. This design facilitates the wiring positioning between the outer circle of the connector frame 10 and the outer circle of the PCB2.

[0040] Furthermore, the two ends of the double-wound wire are respectively provided with an inlet and an outlet. The inlet and outlet are correspondingly set with the enameled wire positioning groove 8, and the enameled wire is directly soldered to the PCB2 from the notch. The inlet and outlet are conveniently positioned and installed through the enameled wire positioning groove 8.

[0041] Furthermore, the winding stator 3 is designed as a can-forming structure, and the PCB2 is designed as a structure with a large inner diameter and a small outer diameter. The PCB is supported by an external step on the skeleton. Without affecting the wire throwing, the design will be higher than the internal step to facilitate glue filling. The can-forming structure can ensure the normal flow rate of the glue.

[0042] Working principle: In use, PCB2 is soldered to the end of the winding stator 3, so that the PCB positioning mark groove 4 on the side of PCB2 corresponds to the enameled wire positioning groove 8. The enameled wire is positioned and installed through the enameled wire positioning groove 8. The electromagnetic field of the electromagnetic coil interacts with the outside of the rotor 9 through the induction plate 7, so as to control the rotation of the rotor 9. The stator core 6 is used to wind the enameled wire. The terminal frame 10 facilitates wiring. The housing 1 is used to install and protect the winding stator 3. The heat fitting positioning mark groove 5 facilitates the identification of the wire output direction of the winding stator 3 during heat fitting, so as to avoid the wire output position being too different during heat fitting, which would affect the assembly of the motor.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-wound low-voltage PCB stator structure, comprising a housing (1), a PCB (2), a wound stator (3), and a frame, characterized in that: The end of the winding stator (3) is provided with a PCB (2) by welding. The winding stator (3) is assembled from multiple skeletons and is located in the center of the machine body shell (1). The side of the PCB (2) is provided with multiple PCB positioning mark grooves (4) and the inner side of the middle of the PCB (2) is provided with a heat fitting positioning mark groove (5).

2. The double-wound low-voltage PCB stator structure according to claim 1, characterized in that: The frame includes a terminal block (10), a stator core (6), and an induction plate (7); The terminal block (10) and the induction plate (7) are respectively located at both ends of the stator core (6).

3. The double-wound low-voltage PCB stator structure according to claim 2, characterized in that: The wiring frame (10) is provided with multiple enameled wire positioning slots (8) on its side, and the enameled wire positioning slots (8) are correspondingly set with the PCB positioning mark slots (4).

4. The double-wound low-voltage PCB stator structure according to claim 2, characterized in that: The bottom of the induction plate (7) is provided with an arc-shaped structure, and the induction plate (7) is located on the outside of the rotor (9).

5. A double-wound low-voltage PCB stator structure according to claim 2, characterized in that: The design of the outer circle of the connector (10) and the outer circle of the PCB (2) is designed to accommodate the corresponding gaps reserved for the double-winding process, which correspond to the 12 enameled wire ends of the double-winding.

6. The double-wound low-voltage PCB stator structure according to claim 4, characterized in that: The two ends of the double winding are respectively provided with an inlet head and an outlet head, and the inlet head and outlet head are respectively provided with the enameled wire positioning groove (8) and the enameled wire is directly soldered to the PCB (2) from the notch.

7. The double-wound low-voltage PCB stator structure according to claim 1, characterized in that: The winding stator (3) is designed as a can-forming structure, and the PCB (2) is designed as a structure with a large inner diameter and a small outer diameter. The PCB is supported by an external step on the skeleton. Without affecting the enameled wire throwing, the design will be higher than the internal step to facilitate glue filling.

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