Dustproof and waterproof fan stator with outer rotor

Abstract

The utility model discloses an outer rotor dustproof and waterproof fan stator, which comprises a stator iron core, a PA66 plastic-coated framework, a stator winding, a base, a copper pin and a circuit board, the stator iron core is coated with the PA66 plastic-coated framework, the PA66 plastic-coated framework is arranged in the base, the circuit board is arranged on the base, an enameled wire of the stator winding is wound on the PA66 plastic-coated framework, and the copper pin is arranged on the base. The three starting ends of the stator winding UVW are respectively provided with a plugging end, the PA66 plastic-coated framework and the circuit board are respectively provided with plugging holes corresponding to the plugging ends, the circuit board is respectively and correspondingly welded with spring clamping pieces, the spring clamping pieces are respectively provided with copper contact pins in a plugging manner, the copper contact pins penetrate through the spring clamping pieces and the plugging holes to be inserted into the plugging ends, and the copper contact pins are matched with the elastic clamping pieces, so that the stator winding UVW is inserted into the plugging ends. And the circuit board is communicated with three starting ends of the stator winding UVW to realize electric conduction. According to the utility model, the dustproof and waterproof grade is improved; and the welding step of mounting the copper contact pin and the circuit board is reduced, the assembly is more convenient, and the simple and firm connection between the stator winding and the circuit board is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a dustproof and waterproof fan stator with an outer rotor. Background Art

[0002] The stator of the external rotor fan is an important component of the external rotor motor.

[0003] The existing patent CN201220648973.2 discloses a connection structure between the stator winding and the circuit board of an external rotor fan, which mainly includes a stator winding, a stator aluminum bracket and a circuit board. The stator aluminum bracket has a concave-convex structure and the stator winding is fixed on the boss frame of the stator aluminum bracket. The insulating sheet is embedded in the groove of the stator aluminum bracket. The UV W three-phase lead wires of the enameled wire in the stator winding are covered with insulating sleeves and pass through the conduit holes in the insulating sheet and are welded to the terminal pins on the circuit board in the groove of the stator aluminum bracket.

[0004] The disadvantages are as follows: 1. The winding is exposed to the air and has a low waterproof grade; 2. The assembly process is complicated and welding equipment is required during the assembly process. Utility Model Content

[0005] Aiming at the shortcomings of low waterproof grade, complicated assembly process and welding equipment required during assembly, the utility model proposes a structure of a dust-proof and wind-proof fan stator with an outer rotor.

[0006] The utility model adopts the following technical solutions:

[0007] An outer rotor dustproof and waterproof wind turbine stator comprises a stator core, a PA66 plastic-coated frame, a stator winding, a base, a copper pin and a circuit board. The stator core is plastic-coated with a PA66 plastic-coated frame, the PA66 plastic-coated frame is installed in the base, the circuit board is installed on the base, the enameled wire of the stator winding is wound on the PA66 plastic-coated frame, plug-in terminals are respectively installed on the three starting ends UVW of the stator winding, plug-in holes are respectively provided on the PA66 plastic-coated frame and the circuit board corresponding to the plug-in terminals, spring clips are respectively welded on the circuit board, copper pins are respectively plugged on the spring clips, the copper pins pass through the spring clips and the plug-in holes and are inserted into the plug-in terminals, and the circuit board is connected with the three starting ends UVW of the stator winding through the cooperation of the copper pins and the elastic clips to achieve conductivity.

[0008] Preferably, the PA66 plastic-coated frame covers the upper and lower surfaces of the stator core, forming a plastic bearing seat in the middle.

[0009] Preferably, the base is injection molded by a BMC plastic-coated layer.

[0010] Preferably, four plastic nuts are installed on the base, and the four plastic nuts are coated in the BMC plastic coating layer.

[0011] Preferably, the elastic clip comprises a clamping end and a welding end, the elastic clip is welded to a corresponding position on the circuit board through two pins of the welding end, and the clamping end clamps the inserted copper pin through the elastic clamp.

[0012] The beneficial effects of the utility model are as follows: (1) the winding is coated with a BMC plastic layer, which improves the dust and water resistance level; (2) during installation, the copper pins are directly plugged into the spring clips that have been welded on the circuit board, which reduces the welding steps for installing the copper pins and the circuit board, making assembly more convenient and achieving a simple and firm connection between the stator winding and the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the installation of the copper pin and the elastic clip.

[0015] Figure 3 It is a structural schematic diagram of an elastic clip.

[0016] In the figure: 1. stator core; 2. PA66 plastic-coated frame; 3. BMC plastic-coated layer; 4. copper pins; 5. plastic nuts; 6. circuit board; 7. spring clip. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0018] Example: Figure 1-Figure 3 As shown, an outer rotor dustproof and waterproof wind turbine stator comprises a stator core 1, a PA66 plastic-coated frame 2, a BMC plastic-coated layer 3, a copper pin 4, a plastic nut 5, a circuit board 6 and a spring clip 7. The PA66 plastic-coated frame 2 is plastic-coated on the stator core 1, and then the enameled wire of the stator winding is wound, three copper pins 4 are inserted into the PA66 plastic-coated frame 2, and the plug-in ends of the three starting ends of the stator winding UVW are connected to the three copper pins 4, and then four plastic nuts 5 are added, and the BMC plastic-coated layer 3 is plastic-coated to form a plastic-coated stator. A circuit board is installed on the BMC plastic-coated layer 3, and a spring clip 7 is welded on the circuit board 6. A section of the copper pin 4 is exposed from the plastic-coated stator, which cooperates with the elastic clip 7 to connect the circuit board 6 with the three starting ends of the stator winding UVW to achieve conductivity.

[0019] The PA66 plastic-coated frame 2 covers the upper and lower surfaces of the stator core 1 , forming a plastic bearing seat in the middle, and the enameled wire is wound on the PA66 plastic-coated frame 2 .

[0020] Three copper pins 4 are inserted into the plug holes on the PA66 plastic-coated frame 2.

[0021] The elastic clip 7 includes a clamping end and a welding end. The elastic clip 7 is welded to a corresponding position on the circuit board 6 through two pins of the welding end, and the clamping end clamps the inserted copper pin 4 through the elastic clamp.

[0022] During the processing of the utility model, the plastic coated stator is made by two plastic coating processes. The first plastic coating uses PA66 material to coat a plastic frame on the stator core. Then, wires are wound on the plastic coated frame and copper pins are inserted. The second plastic coating uses BMC material to wrap the wound stator as a whole, and PA66 plastic nuts are added to inject the plastic coated stator for installing the circuit board. Elastic clips are welded on the circuit board. The plastic coated stator is connected to the circuit board through the elastic clips. A section of the pin is exposed on the plastic coated stator, which cooperates with the elastic clips to achieve conductivity.

[0023] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. An outer rotor dustproof and waterproof wind turbine stator, comprising a stator core (1), a PA66 plastic coated frame (2), a stator winding, a base, a copper pin (4) and a circuit board (6), wherein the stator core (1) is coated with the PA66 plastic coated frame (2), the PA66 plastic coated frame (2) is installed in the base, the circuit board (6) is installed on the base, and the enameled wire of the stator winding is wound on the PA66 plastic coated frame (2), characterized in that: The three starting ends of the stator windings UVW are respectively provided with plug-in terminals, the PA66 plastic-coated frame (2) and the circuit board (6) are respectively provided with plug-in holes corresponding to the plug-in terminals, spring clips (7) are respectively welded on the circuit board (6), and the spring clips (7) are respectively plugged with copper plug pins (4), the copper plug pins (4) pass through the spring clips (7) and the plug-in holes and are inserted into the plug-in terminals, and the copper plug pins (4) cooperate with the spring clips (7) to connect the circuit board (6) and the three starting ends of the stator windings UVW, thereby achieving electrical conduction.

2. The outer rotor dustproof and waterproof fan stator according to claim 1, characterized in that: The PA66 plastic-coated frame (2) covers the upper and lower surfaces of the stator core (1), forming a plastic bearing seat in the middle.

3. The outer rotor dustproof and waterproof fan stator according to claim 1, characterized in that: The base is injection molded by a BMC plastic coating layer (3).

4. The outer rotor dustproof and waterproof fan stator according to claim 3, characterized in that: Four plastic nuts (5) are mounted on the base, and the four plastic nuts (5) are coated in the BMC plastic coating layer (3).

5. The outer rotor dustproof and waterproof wind turbine stator according to claim 1, characterized in that: The spring clip (7) comprises a clamping end and a welding end. The spring clip (7) is welded to a corresponding position on the circuit board (6) via two pins of the welding end. The clamping end clamps the inserted copper pin (4) via an elastic clamp.

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