CN2231724Y - Combination device of small cooling fan motor - Google Patents

Abstract

A combined device for a small heat dissipation fan motor, in which all base plates of the frame body are provided with column tubes for the combination of shaft tubes, and the shaft tubes support the fan blades of the rotor components to rotate in an axial position, and the base board is also combined with a circuit board, which is used for the ring The sheet coil and the silicon steel sheet are glued together with an adhesive, and the rotor is activated by induction with sheet magnets installed on the fan blades.

Description

Combination device of small cooling fan motor

The utility model relates to a combination device of a small cooling fan motor, which uses bare copper enameled wire to wind a ring coil, and the ring coil is adhered to a silicon steel sheet and then adhered to the surface of a circuit board, so that the alternating magnetic field generated by the ring coil and the The permanent magnets of the rotor interact to form mutual repulsive torque to drive the rotor to rotate.

Prior art such as Taiwan Patent Announcement No. 221590 "Stator Structure of Cooling Fan" patent case, which winds a coil on the legs of the magnetic pole yoke, so that after the coil is passed through the control circuit with a pulse current, the stator coil will A rotating magnetic field is generated to drive the rotor to rotate. Announcement No. 223374 "Stator Combination Structure of Small Heat Dissipating Fan" and Announcement No. 236471 "Stator Combination Structure of Small Heat Dissipation Fan" patents, which wind coils on plastic seats, and in The plastic seats on both sides of the coil are respectively combined with upper and lower magnetic pole pieces, thus forming the stator structure of the cooling fan motor. Announcement No. 235064 "Structural Improvement of DC Cooling Fan" patent case, which has a coil seat between the upper and lower product yoke pieces, and the rotating magnetic field generated by the coil forms a magnetic pole through the product yoke piece Induction, and then the permanent magnets that drive the rotor form mutual repulsion to generate rotational motion.

The structures disclosed in the above-mentioned prior art all have a structure in which the coil cooperates with the pole yoke to form the stator, and the coil seat is used for the coupling and fixing of the coil and the pole piece.

However, in the prior art structure mentioned above, the total thickness of the cooling fan cannot be greatly reduced due to the limitation of the rotor driving.

In view of this, the purpose of the present invention is to provide a combination device of a small cooling fan motor, so that the cooling fan can have a more ultra-small and ultra-thin configuration.

In order to achieve the above purpose, the combination device of the small cooling fan motor provided by the utility model includes:

A frame body, which has a shaft tube and a shaft of the fan blade of the rotor component pierced and combined;

A stator component is combined with a circuit board on the frame body, and the circuit board has a control component, so that it can be introduced into a power source to energize the coil;

A rotor component, the shaft set by the fan blade passes through the shaft tube of the frame body, and is limited in positioning and rotation by the positioning element. The fan blade itself is combined with a magnet, which can be induced with the coil of the stator component;

Wherein, the stator component has a ring-shaped coil and a silicon steel sheet, which are bonded to the circuit board by an adhesive, and which form a surface induction with the magnet of the rotor.

The frame body has a base plate with an upright column tube, the inner diameter of the column tube is assembled with the shaft tube, and the outer diameter is nested with the circuit board.

Several columns are arranged on the base plate of the frame body, which can be inserted and combined with circuit boards through holes.

Now with a preferred embodiment, the structural features of the utility model will be described in detail in conjunction with the accompanying drawings.

Fig. 1 is a three-dimensional exploded view of the utility model.

Fig. 2 is the combined upper view of the utility model.

Fig. 3 is a sectional view of line 3-3 in Fig. 2 .

Fig. 4 is a schematic diagram of the utility model being combined on a heat sink.

Please refer to FIG. 1 , the utility model includes main parts such as a frame body 1 , a stator component 2 , and a rotor component 3 .

The frame body 1 can be used for the combination of stator components, and it can be formed into various shapes or shells. In order to make it have a smaller thickness and heat dissipation effect, it can be made of plastic material as shown in the accompanying drawings. , the frame body 1 itself has a base plate 11, and the base plate 11 is formed with a column tube 12 at the central position, and the column tube 12 itself can be nested with a shaft tube 13. The tube 12 can be provided with an opening groove 14, so that the column tube 12 has the flexibility to open and close, and an inwardly protruding flange can be provided on the top of the petal-shaped column tube 12, so that the shaft tube 13 can be firmly positioned, and the shaft tube 13 can be firmly positioned. The inner diameter of the tube 13 supports the rotation of the rotor; the base plate 11 is further provided with several columns 15 for the circuit board 21 to be inserted and combined through holes.

This stator component 2 comprises components such as circuit board 21, silicon steel sheet 22, coil 23, and circuit board 21 itself is combined with IC etc. It is in the form of a thin sheet, which can be glued on the circuit board 21 with an adhesive, or fixed on the column 15 of the frame body 1 through the hole 221. When the circuit board 21 is introduced into the power supply, a magnetic field can be generated by the coil 23.

The rotor component 3 includes a fan blade 31 and a magnet 32. The magnet 32 is fixed on the inner surface of the fan blade 31, and the fan blade 31 is provided with a shaft 33. The shaft 33 can pass through the shaft tube 13, and the ring groove 34 is used for the C-shaped ring. The positioning member 35 is buckled together so that the fan blade 31 can rotate relative to the stator member 2 .

Please refer to the combined situation of the present utility model shown in Fig. 2, 3, because the present utility model is only applicable to small fan, coil 23 and magnet 32 are designed by the inductive design of thin sheet into surface shape, when coil 23 is led to power supply, rotor 3 The fan blade 31 of the utility model can be driven to rotate; because the coil 23 of the present utility model, the silicon steel sheet 22 are thin sheets, and the induction design of forming a surface with the magnet 32, so the total thickness and diameter of the two are the same as those of the conventional coil and the coil. The structure comparison between the magnets that need to be repeatedly nested can be greatly reduced, and when it is combined with the heat sink (as shown in Figure 4), its total thickness can also be greatly reduced. In terms of the ultra-thin design of the small cooling fan motor, Has a great breakthrough.

The structure of the utility model is novel, and as far as the product is concerned, its thickness can be greatly reduced, and there is a great breakthrough in product design requirements, which is really progressive, and the structure can be used in industry.

Claims (3)

1. A combination device of a small cooling fan motor, which includes: A frame body, which has a shaft tube and a shaft of the fan blade of the rotor component pierced and combined; A stator component is combined with a circuit board on the frame body, and the circuit board has a control component for introducing power and energizing the coil; A rotor component, the shaft set by the fan blade passes through the shaft tube of the frame, and is positioned by the positioning element. The fan blade itself is combined with a magnet, which is induced by the coil of the stator component; It is characterized in that the stator component has a ring-shaped coil and a silicon steel sheet, which are combined on the circuit board by an adhesive, and which form a surface induction with the magnet of the rotor. 2. The combination device of a small heat dissipation fan motor according to claim 1, wherein the frame body has a base plate, and there is a vertical column tube on the base plate, the inner diameter of the column tube is combined with the shaft tube, and the outer diameter is matched with the circuit board sleeve. place. 3. The combination device of a small heat dissipation fan motor according to claim 1, wherein a plurality of upright posts are arranged on the base plate of the frame body, which are inserted and combined with the holes on the circuit board.

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