An ultra-thin fan stator structure

Abstract

The utility model relates to fan stator processing technical field, especially in a kind of ultra-thin fan stator structure of fan stator structure.It includes insulating frame, enameled wire, PCB double-sided board, insulating frame is equipped with branch pin, positioning column, PCB double-sided board is equipped with pin hole, positioning hole, enameled wire is wound on insulating frame and forms coil, and the end of enameled wire is wound on branch pin, PCB double-sided board covers on insulating frame and blocks coil, positioning column passes through positioning hole, branch pin passes through pin hole and exposes on PCB double-sided board, pin hole, branch pin and the end of enameled wire jointly constitute upper tin position.The utility model adds positioning column on insulating frame for fixing PCB double-sided board, and PCB double-sided board is combined with coil to block coil, when tin is carried out to branch pin, tin liquid can be avoided to contact coil, prevent coil short circuit, ensure the quality stability of fan stator.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine stator processing technology, and in particular to an ultra-thin wind turbine stator structure. Background Technology

[0002] In the production process of single-phase external rotor DC fans with a thickness of less than 7mm, the stator of the fan is required to be relatively small in height, and the coil of the enameled wire is large. The conventional process is to split the end of the enameled wire onto the metal pins. The coil is wound relatively fully. When the pins of the coil are tinned, the molten tin can easily come into contact with the enameled coil wire, causing a short circuit in the coil and resulting in defects. Utility Model Content

[0003] This invention provides an ultra-thin fan stator structure, which aims to solve the problem that existing fan stator structures are prone to short circuits in the coils when tinning.

[0004] This utility model provides an ultra-thin fan stator structure, including an insulating frame, enameled wire, and a double-sided PCB. The insulating frame is provided with wire-separating pins and positioning posts. The double-sided PCB is provided with pin through holes and positioning holes. The enameled wire is wound on the insulating frame to form a coil, and the end of the enameled wire is wound on the wire-separating pin. The double-sided PCB covers the insulating frame and blocks the coil. The positioning posts pass through the positioning holes, and the wire-separating pins pass through the pin through holes and are exposed on the double-sided PCB. The pin through holes, wire-separating pins, and the end of the enameled wire together constitute a soldering area.

[0005] As a further improvement of this utility model, the insulating frame includes an inner ring of the support, an outer ring of the support, and a coil support arm. The inner ring of the support and the outer ring of the support are connected by the coil support arm, and the enameled wire is wound on the coil support arm to form a coil.

[0006] As a further improvement of this utility model, the positioning post includes an inner ring positioning post and an outer ring positioning post. The inner ring positioning post is connected to the inner ring of the bracket, and the outer ring positioning post is connected to the outer ring of the bracket. The PCB double-sided panel is provided with a first positioning hole and a second positioning hole that correspond to the positions of the inner ring positioning post and the outer ring positioning post, respectively.

[0007] As a further improvement of this utility model, the positioning post is made of plastic.

[0008] As a further improvement of this utility model, the top surface of the PCB double-sided board covers the coil, and the branching pin is exposed on the bottom surface of the PCB double-sided board, and is fixed to the branching pin by soldering through the PCB double-sided board.

[0009] As a further improvement of this utility model, the insulating frame includes an upper insulating frame and a lower insulating frame, which are connected from top to bottom, and the branch pins and positioning posts are located on the lower insulating frame.

[0010] As a further improvement of this utility model, the ultra-thin fan stator structure also includes silicon steel sheets, and a plurality of the silicon steel sheets are connected to the side of the insulating frame.

[0011] The beneficial effects of this utility model are: adding a positioning post to the insulating frame to fix the double-sided PCB, combining the double-sided PCB with the coil to block the coil, and then avoiding the solder from contacting the coil when tinning the dividing pins, thus preventing the coil from short-circuiting and ensuring the quality stability of the fan stator. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the ultra-thin fan stator structure of this utility model;

[0013] Figure 2 This is an internal structural diagram of the ultra-thin fan stator structure of this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0015] like Figures 1 to 2 As shown, the present invention discloses an ultra-thin fan stator structure, including an insulating frame 1, enameled wire, and a double-sided PCB 2. The insulating frame 1 is provided with wire-separating pins 3 and positioning posts. The double-sided PCB 2 is provided with pin through holes 4 and positioning holes. The enameled wire is wound on the insulating frame 1 to form a coil 5, and the end of the enameled wire is wound on the wire-separating pins 3. The double-sided PCB 2 covers the insulating frame 1 and blocks the coil 5. The positioning posts pass through the positioning holes, and the wire-separating pins 3 pass through the pin through holes 4 and are exposed on the double-sided PCB 2. The pin through holes 4, the wire-separating pins 3, and the end of the enameled wire together constitute the soldering part.

[0016] The positioning posts are used to position the PCB double-sided board 2 and the insulating frame 1 for installation. The pin vias 4 provide space for the branch pins 3 to be assembled. After tinning, the PCB double-sided board 2 is soldered to the branch pins 3 through the pin vias 4. The insulating frame 1 is used for winding the enameled wire to form the conductive and magnetic structure of the stator. The end of the enameled wire is wound around the branch pins 3 and tinned together to form the conductive position of the enameled wire. The structure of the PCB double-sided board 2 blocking the coil 5 can avoid the risk of the solder dripping directly onto the coil 5 during tinning.

[0017] The insulating frame 1 includes an inner ring 11, an outer ring 12, and coil arms 13. The inner ring 11 and the outer ring 12 are connected by the coil arms 13. Enamelled wire is wound around the coil arms 13 to form a coil 5. Multiple coil arms 13 can be evenly distributed on the insulating frame 1, and each coil arm 13 is wound with one enamelled wire coil 5. The inner ring 11 and the outer ring 12 form a limiting position for the winding of the coil 5, preventing the enamelled wire from exceeding the winding range and causing the risk of accidental short circuit during subsequent assembly.

[0018] The positioning posts include an inner ring positioning post 6 and an outer ring positioning post 7. The inner ring positioning post 6 is connected to the inner ring 11 of the bracket, and the outer ring positioning post 7 is connected to the outer ring 12 of the bracket. The PCB double-sided board 2 is provided with a first positioning hole 8 and a second positioning hole 9 that correspond to the positions of the inner ring positioning post 6 and the outer ring positioning post 7, respectively. The inner ring positioning post 6 and the outer ring positioning post 7 adopt a staggered ring design, so that the docking position of these two positioning posts with the first positioning hole 8 and the second positioning hole 9 is unique, which has a foolproof effect and prevents the PCB double-sided board 2 from being installed backwards on the insulating frame 1.

[0019] The positioning posts are made of plastic. The plastic structure of the positioning posts serves as insulation, preventing electrical conductivity from affecting the double-sided PCB board 2.

[0020] The top surface of the double-sided PCB 2 covers the coil 5, and the branch pin 3 is exposed on the bottom surface of the double-sided PCB 2. The double-sided PCB 2 is fixed to the branch pin 3 by soldering. The double-sided PCB structure allows the two pin holes at the ends of the enameled wire to be made larger than usual. The pin vias 4 of the double-sided PCB 2 can be soldered, whereas if a single-sided PCB is used, its vias cannot be soldered.

[0021] The insulating frame 1 includes an upper insulating frame 14 and a lower insulating frame 15, which are joined together vertically. The wire guide pin 3 and the positioning post are located on the lower insulating frame 15. The insulating frame 1 is divided into two parts, an upper and a lower support. The upper and lower splicing structure allows the lower support to be installed at the bottom of the iron core first, the coil 5 to be inserted, and then the upper support to be snapped on. There is operating space at both the upper and lower ends during the insertion of the coil 5, which allows for more flexible adjustment of the position of the coil 5.

[0022] The ultra-thin wind turbine stator structure also includes silicon steel sheets 10, with multiple silicon steel sheets 10 connected to the side of the insulating frame 1. The silicon steel sheets 10 mounted on the insulating frame 1 form the magnetic core of the wind turbine stator, enhancing magnetic field utilization and reducing eddy current losses.

[0023] In this structure, the insulating frame 1 adds a plastic positioning post to the existing structure. The positioning post is compactly combined with the PCB double-sided board 2, covering the coil 5 to prevent it from swinging left and right. Compared with the existing process, which involves separating the enameled wire to the metal pins and ensuring that the wire coil is not tinned, this structure first combines the coil 5 with the PCB double-sided board 2. The PCB double-sided board 2 blocks the coil 5. The pins and enameled wires can be tinned through the pin holes 4 of the PCB double-sided board 2. The coil 5 assembly is then wave soldered together. This method can prevent the coil 5 from contacting the molten solder, ensure quality stability, and enable automated production.

[0024] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An ultra-thin fan stator structure, characterized in that, The device includes an insulating frame, enameled wire, and a double-sided PCB. The insulating frame is provided with wire splitting pins and positioning posts. The double-sided PCB is provided with pin through holes and positioning holes. The enameled wire is wound around the insulating frame to form a coil, and the end of the enameled wire is wound around the wire splitting pins. The double-sided PCB covers the insulating frame and blocks the coil. The positioning posts pass through the positioning holes, and the wire splitting pins pass through the pin through holes and protrude from the double-sided PCB. The pin through holes, wire splitting pins, and the end of the enameled wire together constitute the soldering area.

2. The ultra-thin fan stator structure according to claim 1, characterized in that, The insulating frame includes an inner ring, an outer ring, and a coil arm. The inner ring and the outer ring are connected by the coil arm, and the enameled wire is wound around the coil arm to form a coil.

3. The ultra-thin fan stator structure according to claim 2, characterized in that, The positioning post includes an inner ring positioning post and an outer ring positioning post. The inner ring positioning post is connected to the inner ring of the bracket, and the outer ring positioning post is connected to the outer ring of the bracket. The double-sided PCB is provided with a first positioning hole and a second positioning hole that correspond to the positions of the inner ring positioning post and the outer ring positioning post, respectively.

4. The ultra-thin fan stator structure according to claim 1, characterized in that, The positioning post is made of plastic.

5. The ultra-thin fan stator structure according to claim 1, characterized in that, The top surface of the double-sided PCB covers the coil, and the splitter pins are exposed on the bottom surface of the double-sided PCB. The double-sided PCB is fixed to the splitter pins by soldering.

6. The ultra-thin fan stator structure according to claim 1, characterized in that, The insulating frame includes an upper insulating frame and a lower insulating frame, which are connected from top to bottom. The branch pins and positioning posts are located on the lower insulating frame.

7. The ultra-thin fan stator structure according to claim 1, characterized in that, It also includes silicon steel sheets, a plurality of which are connected to the side of the insulating frame.

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