Brushless direct current motor PCB structure convenient for wiring of small-wire-diameter enameled wire
By designing the star-type connection interface wire wrap pad and conducting copper foil wiring hole in the PCB structure of the brushless DC motor, the connection problem between the small-wire-diameter enameled wire and the PCB pad is solved, the insulation and wire binding processing is simplified, and the production quality and stability are improved.
Patent Information
- Application Number
- CN202422225929.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The connection between the small and medium-sized wire diameter enameled wire and PCB pads is difficult, resulting in complex lead and insulation processing, affecting the quality of mass production.
A brushless DC motor PCB structure is designed to facilitate small-wire-diameter enameled wire wiring. The insulation and wire binding process is simplified by setting a star-type connection interface wire wrap pad, A-phase, B-phase and C-phase winding wire wrap pad on the substrate, and connecting it with conductive copper foil, combining wiring holes and U-shaped grooves.
It achieves a simple structure and good operating stability, improves service life, simplifies the mass production process, and improves production quality.
Smart Images
Figure CN223080213U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of brushless DC motors, and particularly relates to a PCB structure of a brushless DC motor which is convenient for connecting enameled wires with a small wire diameter. Background Technique
[0002] A brushless DC motor consists of a motor main body and a driver, and is a typical mechatronic product. A brushless motor refers to a motor without a brush and a commutator (or slip ring), also known as a non-commutator motor. The stator windings of the motor are mostly made into a three-phase symmetrical star connection, which is very similar to a three-phase asynchronous motor. A permanent magnet that has been magnetized is adhered to the rotor of the motor. In order to detect the polarity of the rotor of the motor, a position sensor is installed in the motor.
[0003] The driver is composed of power electronic devices and integrated circuits, etc. Its functions are: receiving the start, stop, and brake signals of the motor to control the start, stop, and brake of the motor; receiving the position sensor signal and the forward and reverse signals to control the on and off of each power tube of the inverter bridge to generate continuous torque; receiving the speed command and the speed feedback signal to control and adjust the speed; providing protection and display, etc.
[0004] In order to control the operation of a process, the data structure that stores the management and control information of the process in the system is called a process control block (PCB Process Control Block). It is a part of the process entity and is the most important record data structure in the operating system. It is the most important data structure for process management and control. Each process has a PCB. When a process is created, the PCB is established and accompanies the entire process of the process running until the process is cancelled and cancelled. Summary of the Invention
[0005] The utility model mainly solves the deficiencies existing in the prior art, and provides a PCB structure of a brushless DC motor which is convenient for connecting enameled wires with a small wire diameter. It has the characteristics of simple structure, good operation stability, and long service life. It solves the problem of soldering connection between the enameled wire with a small wire diameter and the PCB pad. It simplifies the insulation treatment and wire binding treatment processes when connecting the lead wire and the enameled wire, and improves the quality of mass production.
[0006] The above technical problems of the utility model are mainly solved by the following technical solutions:
[0007] A brushless DC motor PCB structure facilitating the wiring of small-diameter enameled wires, including a substrate. On both sides of the periphery of the substrate, there are respectively a star connection interface winding pad and a C-phase winding winding pad. Between the star connection interface winding pad and the substrate, there is an A-phase winding winding pad. Between the C-phase winding winding pad and the substrate, there is a B-phase winding winding pad. Conductive copper foils are provided between the C-phase winding winding pad and the B-phase winding winding pad, between the B-phase winding winding pad and the substrate, between the star connection interface winding pad and the A-phase winding winding pad, and between the A-phase winding winding pad and the substrate.
[0008] Preferably, the arc length of the B-phase winding winding pad is greater than that of the C-phase winding winding pad, the arc length of the C-phase winding winding pad is greater than that of the A-phase winding winding pad, and the arc length of the A-phase winding winding pad is greater than that of the star connection interface winding pad.
[0009] Preferably, wiring holes are provided at the front ends of the conductive copper foils.
[0010] Preferably, U-shaped grooves are provided at the rear ends of the conductive copper foils.
[0011] Preferably, a pair of symmetrically distributed assembly holes are provided on the substrate.
[0012] Preferably, heat dissipation inner holes integrated with the substrate are provided inside the substrate.
[0013] The present utility model can achieve the following effects:
[0014] The present utility model provides a brushless DC motor PCB structure facilitating the wiring of small-diameter enameled wires. Compared with the prior art, it has the characteristics of simple structure, good operation stability, and long service life. It solves the problem of soldering connection between small-diameter enameled wires and PCB pads. It simplifies the insulation treatment and wire binding treatment processes during the connection of leads and enameled wires, and improves the quality of mass production. Description of the Drawings
[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.
[0016] Figure 2 is a top-view structural schematic diagram of the present utility model.
[0017] In the figure: wiring hole 1, star connection interface winding pad 2, conductive copper foil 3, A-phase winding winding pad 4, B-phase winding winding pad 5, C-phase winding winding pad 6, assembly hole 7, substrate 8, heat dissipation inner hole 9, U-shaped groove 10. Detailed Embodiment
[0018] Next, through embodiments and in combination with the drawings, the technical solutions of the present utility model will be further specifically described.
[0019] Embodiment: As Figure 1 and Figure 2 shown, a PCB structure of a brushless DC motor facilitating the connection of small-diameter enameled wires includes a substrate 8. A pair of symmetrically distributed assembly holes 7 are provided on the substrate 8, and a heat dissipation inner hole 9 integrated with the substrate 8 is provided inside the substrate 8. Star connection interface winding pads 2 and C-phase winding pads 6 are respectively provided on both sides of the periphery of the substrate 8. An A-phase winding pad 4 is provided between the star connection interface winding pad 2 and the substrate 8, and a B-phase winding pad 5 is provided between the C-phase winding pad 6 and the substrate 8. The arc length of the B-phase winding pad 5 is greater than that of the C-phase winding pad 6, the arc length of the C-phase winding pad 6 is greater than that of the A-phase winding pad 4, and the arc length of the A-phase winding pad 4 is greater than that of the star connection interface winding pad 2. Conductive copper foils 3 are provided between the C-phase winding pad 6 and the B-phase winding pad 5, between the B-phase winding pad 5 and the substrate 8, between the star connection interface winding pad 2 and the A-phase winding pad 4, and between the A-phase winding pad 4 and the substrate 8. Wiring holes 1 are provided at the front ends of the conductive copper foils 3, and U-shaped grooves 10 are provided at the rear ends of the conductive copper foils 3.
[0020] In summary, the PCB structure of the brushless DC motor facilitating the connection of small-diameter enameled wires has the characteristics of simple structure, good operation stability, and long service life. It solves the problem of soldering connection between small-diameter enameled wires and PCB pads. It simplifies the insulation treatment and wire binding process during the connection of leads and enameled wires, and improves the quality of mass production.
[0021] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the basic features of the invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0022] In short, the above are only specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the field of the present invention are covered by the patent scope of the present invention.
Claims
1. A brushless DC motor PCB structure facilitating the connection of small-diameter enameled wires, characterized in that: It includes a substrate (8). On both sides of the periphery of the substrate (8), there are respectively a star connection interface winding pad (2) and a C-phase winding pad (6). Between the star connection interface winding pad (2) and the substrate (8), there is an A-phase winding pad (4). Between the C-phase winding pad (6) and the substrate (8), there is a B-phase winding pad (5). Between the C-phase winding pad (6) and the B-phase winding pad (5), between the B-phase winding pad (5) and the substrate (8), between the star connection interface winding pad (2) and the A-phase winding pad (4), and between the A-phase winding pad (4) and the substrate (8), there are all conduction copper foils (3).
2. The brushless DC motor PCB structure facilitating the connection of small-diameter enameled wires according to claim 1, wherein: The arc length of the B-phase winding pad (5) is greater than that of the C-phase winding pad (6), the arc length of the C-phase winding pad (6) is greater than that of the A-phase winding pad (4), and the arc length of the A-phase winding pad (4) is greater than that of the star connection interface winding pad (2).
3. The PCB structure of a brushless DC motor facilitating the connection of small-diameter enameled wires according to claim 1, characterized in that: At the front end of each of the conduction copper foils (3), there is a wiring hole (1).
4. A brushless DC motor PCB structure facilitating the connection of small-diameter enameled wires, as claimed in claim 3, wherein: At the rear end of the conduction copper foil (3), there is a U-shaped groove (10).
5. A brushless DC motor PCB structure facilitating the connection of small-diameter enameled wires, characterized in that: On the substrate (8), there are a pair of symmetrically distributed assembly holes (7).
6. The brushless DC motor PCB structure for facilitating the connection of small-diameter enameled wires according to claim 1, wherein: Inside the substrate (8), there is a heat dissipation inner hole (9) integrated with the substrate (8).