Winding assembly, motor structure and axial motor

Abstract

The invention discloses a winding assembly, a motor structure and an axial motor in the technical field of motors, and aims to solve the problem of complex winding processing technology in the prior art, improve the efficiency of the axial motor and reduce the noise of the motor. The motor comprises a shaft center, a base coaxially installed with the shaft center, a copper pipe installed on the base, a bearing installed in the copper pipe, a retaining ring installed in the copper pipe and used for limiting the bearing, a PCB drive board installed on the base and a winding assembly installed on the PCB drive board. The winding assembly comprises a winding insulation frame, a water-drop-shaped coil wound on the surface of the insulation frame and a conductive metal sheet used for connecting the PCB drive board and the coil. The coil in the winding assembly is connected with the external PCB through the conductive metal sheet, connection of an internal structure is achieved, the winding assembly can be machined through an automatic technology, and then all the parts form an integral assembly; and the winding assembly is connected to the part, correspondingly connected with the conductive metal sheet of the winding assembly, of the PCB driving board through an automatic gluing process.

Description

Technical Field

[0001] The invention relates to a winding assembly, a motor structure and an axial motor, and belongs to the technical field of motors. Background Art

[0002] As the demand for motor performance continues to increase, axial motors need to have higher power density and higher efficiency in a limited space when working, which places very high demands on winding design. In existing winding designs, axial motors have low operating efficiency when running at high speeds, and electromagnetic noise and vibration problems are particularly prominent. Low efficiency means wasting more electrical energy from the equipment, high power consumption and no energy saving. The noise and vibration of the motor not only affect the operating stability of the equipment, but may also cause electromagnetic interference, thereby affecting the normal operation of other nearby electronic equipment. At the same time, with the increasing demand for industrial automation, the production and installation process of traditional winding components is relatively complex, usually requiring multi-step processing, which increases production costs and is difficult to meet the requirements of modern manufacturing for high efficiency and automation. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art. The existing axial motor winding production and assembly process is relatively cumbersome and usually includes multiple complex processing steps, which not only leads to increased production costs, but also makes it difficult to achieve the high efficiency and automation level pursued by modern manufacturing. At the same time, the existing motor technology has low efficiency, vibration and noise problems, making it difficult to meet the market demand for high-performance motors.

[0004] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions: In a first aspect, a winding assembly is provided, comprising a winding insulation frame, a coil and a conductive metal sheet; the coil is wound around the surface of the winding insulation frame, the coil is wound in a teardrop shape, and the conductive metal sheet is used to connect a conductive interface on the surface of a PCB driving board and a power-on end of the coil.

[0005] The winding insulation frame comprises an insulation frame upper end and an insulation frame lower end, and an annular installation space is formed between the upper end and the lower end of the winding insulation frame, and the coil is wound in the annular installation space; after the coil is wound, the annular installation space is closed by magnetic sealing glue.

[0006] A permanent magnet is installed at the upper end of the PCB driving board. The PCB driving board is annular and coaxial with the permanent magnet. The teardrop-shaped coil is radially distributed, and the narrow end of the teardrop-shaped coil faces the central axis of the PCB driving board.

[0007] The surface annular array of the PCB driving board has a plurality of conductive interfaces, and the winding insulation frame wound with the coil is arranged above the corresponding conductive interfaces.

[0008] The coil extends out a section to communicate with the conductive metal sheet, and the conductive metal sheet is communicated with the conductive interface.

[0009] A Hall IC is installed on the surface of the PCB driving board near the winding assembly to monitor the winding assembly.

[0010] In a second aspect, a motor structure comprises a winding assembly as described in the first aspect.

[0011] In the third aspect, an axial motor includes an axis, a base installed coaxially with the axis, a copper tube installed on the base, a bearing installed in the copper tube, a retaining ring installed in the copper tube for limiting the bearing, a PCB drive board installed on the base, and a winding assembly installed on the PCB drive board.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present application connects the coil inside the winding assembly with the external PCB circuit board through a conductive metal sheet to achieve the connection of the internal structure. The winding assembly can be processed using an automated process, and then the various parts are assembled into an integral assembly, and then the winding assembly is connected to the PCB driver board through an automated gluing process to the corresponding conductive metal sheet part of the winding assembly.

[0013] 2. The present application designs the coil into a teardrop shape. Since the permanent magnet is magnetized in an axial sector shape, the space under the magnetic pole of the magnet can be fully utilized, thereby improving the utilization rate of the permanent magnet and the efficiency of the motor, thereby reducing the length of the ineffective side of the coil, reducing copper loss, and reducing the temperature rise of the motor.

[0014] 3. Using magnetic sealing glue to seal the coil can reduce buzzing noise, improve electromagnetic interference capability, and thus reduce the vibration and noise generated by the motor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a cross-sectional view of an axial motor structure according to an embodiment of the present invention; Figure 2 Shown is an exploded view of the axial motor structure of an embodiment of the present invention; Figure 3 Shown is a winding assembly installation diagram of an embodiment of the present invention; Figure 4 Shown is an installation diagram of a multi-winding assembly according to an embodiment of the present invention; Figure 5 Shown is a structural diagram of a winding assembly according to an embodiment of the present invention; Figure 6 Shown is a cross-sectional view of a winding assembly according to an embodiment of the present invention; Figure 7The figure shows a finished product schematic diagram of a winding assembly according to an embodiment of the present invention; Figure 8 Shown is a schematic diagram of a winding assembly installed on a PCB driver board according to an embodiment of the present invention.

[0016] In the figure: 1. Axis; 2. Base; 3. Copper tube; 4. Bearing; 5. Retaining ring; 6. PCB driver board; 61. Conductive interface; 62. Hall IC; 7. Winding assembly; 71. Winding insulation frame; 72. Coil; 73. Conductive metal sheet; 74. Magnetic sealing glue; 8. Magnetic sheet. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0019] like Figure 5 , 6 , 7 and 8, a winding assembly 7 comprises a winding insulation frame 71, a coil 72, a conductive metal sheet 73 and a magnetic sealing glue 74; wherein the coil 72 is arranged in a teardrop shape. In the present embodiment, both ends of the winding insulation frame 71 are planes, and the middle of the winding insulation frame 71 is connected by a supporting column, so that the cross section is in the shape of an "I". In this way, the coil 72 is arranged in a teardrop shape and is wound between the upper end and the lower end of the winding insulation frame 71, so as to form a single part. A notch is arranged on one side of the lower end of the winding insulation frame 71, and a conductive metal sheet 73 is installed in the notch. The coil 72 extends a section to be connected to the conductive metal sheet 73, and the conductive metal sheet 73 is connected to the conductive interface 61 of the PCB driving board 6, so that each winding assembly 7 is connected to the PCB.

[0020] As shown in Figures 3, 4 and 5, the annular installation space refers to the space formed between the upper end and the lower end of the winding insulation frame 71, which is annular. At the same time, the winding of the coil 72 needs to be determined according to the magnetic poles of the magnet. Since the permanent magnet is axially fan-shaped magnetized, the winding shape of the coil 72 is set to a teardrop shape.

[0021] like Figure 6 and 7 As shown, after the coil 72 is wound, the inside of the annular installation space is filled with the coil 72, and it is now a semi-open space. In order to reduce the buzzing noise and improve the electromagnetic interference capability, the magnetic sealant 74 is provided to seal the annular installation area, thereby reducing the vibration and noise generated by the motor operation.

[0022] like Figure 3 As shown in the figure, in some specific embodiments, the teardrop-shaped coil 72 includes a wider end and a narrower end, wherein the wider end is far away from the axis 1 of the base 2, and the narrower end is close to the axis 1 of the base 2. Example

[0023] A motor structure includes an axis 1, a base 2 installed coaxially with the axis 1, a copper tube 3 installed on the base 2, a bearing 4 installed in the copper tube 3, a retaining ring 5 installed in the copper tube 3 for limiting the bearing 4, a PCB drive board 6 installed on the base 2, and a winding assembly 7 installed on the PCB drive board 6.

[0024] Before the PCB driver board 6 is assembled with the winding assembly 7, a plurality of conductive interfaces 61 are provided in a circular array on the surface, so that the winding assembly 7 can be processed into parts separately, and then a plurality of winding assemblies 7 are mounted on the surface of the PCB driver board 6 by a gluing process.

[0025] like Figure 1 and Figure 2 As shown, the base of the motor structure is the base 2, a magnetic sheet 8 is installed on the surface of the base 2, and then a PCB driving board 6 is installed on the surface of the magnetic sheet 8, and a plurality of winding assemblies 7 are installed on the surface of the PCB driving board 6. In some specific embodiments, the winding assemblies 7 are arranged in a circular array around the axis 1, wherein a Hall IC 62 is installed between adjacent winding assemblies 7. Example

[0026] like Figure 1 and Figure 2 As shown, an axial motor is provided, wherein the motor housing is coaxially arranged with the axis 1, the axis 1 is coaxially installed with the base 2, a copper tube 3 is provided on the surface of the base 2, a bearing 4 is installed in the copper tube 3, a retaining ring 5 for limiting the bearing 4 is provided on the upper end of the bearing 4, an axial magnetized magnet is clamped inside the motor housing, and then a PCB driving board 6 is installed on the upper end of the base 2, a magnetic attraction sheet 8 is provided between the PCB driving board 6 and the base 2, for attracting the magnet and guiding the magnetic pole; a friction sheet is installed between the bearing 4 and the copper tube 3.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A winding assembly, characterized in that: It comprises a winding insulation frame (71), a coil (72) and a conductive metal sheet (73); the coil (72) is wound around the surface of the winding insulation frame (71), the coil (72) is wound in a water drop shape, and the conductive metal sheet (73) is used to connect a conductive interface on the surface of a PCB drive board (6) and an energized end of the coil (72).

2. The winding assembly according to claim 1, characterized in that The winding insulation frame (71) comprises an insulation frame upper end and an insulation frame lower end; an annular installation space is formed between the upper end and the lower end of the winding insulation frame (71); the coil (72) is wound in the annular installation space; after the coil (72) is wound, the annular installation space is sealed by a magnetic sealing glue (74).

3. The winding assembly according to claim 1, characterized in that: A permanent magnet is mounted on the upper end of the PCB drive board (6); the PCB drive board (6) is annular and coaxial with the permanent magnet; the teardrop-shaped coil (72) is radially distributed, with the narrow end of the teardrop-shaped coil facing the central axis of the PCB drive board (6).

4. The winding assembly according to claim 1, characterized in that The surface annular array of the PCB driving board (6) has a plurality of conductive interfaces (61), and a winding insulation frame (71) wound with a coil (72) is arranged above the corresponding conductive interface (61).

5. The winding assembly according to claim 4, characterized in that The coil (72) extends a section to communicate with the conductive metal sheet (73), and the conductive metal sheet (73) is communicated with the conductive interface (61).

6. The winding assembly according to claim 1, characterized in that A Hall IC (62) is installed on the surface of the PCB driving board (6) at a position close to the winding assembly (7) for monitoring the winding assembly.

7. A motor structure, characterized in that: A winding assembly comprising any one of claims 1-7.

8. An axial motor, characterized in that: The invention comprises an axis (1), a base (2) coaxially mounted with the axis (1), a copper tube (3) mounted on the base (2), a bearing (4) mounted in the copper tube (3), a retaining ring (5) mounted in the copper tube (3) for limiting the position of the bearing (4), a PCB drive board (6) mounted on the base (2), and a winding assembly mounted on the PCB drive board (6).

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