CN2619401Y

CN2619401Y - Flat brushless motor

Info

Publication number: CN2619401Y
Application number: CNU032620950U
Authority: CN
Inventors: 陆敏; 王爱平
Original assignee: ZHENJIANG YUEQING MICRO MOTOR PLANT
Current assignee: ZHENJIANG YUEQING MICRO MOTOR PLANT
Priority date: 2003-05-23
Filing date: 2003-05-23
Publication date: 2004-06-02
Anticipated expiration: 2013-05-23

Abstract

The utility model relates to a micro flat brushless motor, which includes a button base, an enclosing cover, a PCB printed circuit board and an IC control integrated circuit. A supporting shaft is fixedly arranged at the base, a rotor assembly is sleeved on the supporting shaft, a stator assembly is arranged around the rotor assembly, the PCB printed circuit is sleeved on the supporting shaft, the PCB printed circuit is disposed in the enclosing cover above the upward side of rotor and the stator assembly. The IC control integrated circuit is arranged on the PCB printing circuit. The utility model has compact structure, and is magnetic flux leakage proof with easy heat radiation as well as advantages of high rotating speed, strong vibration sense, long service life and low cost etc.

Description

Flat brushless motor

Technical field

The utility model relates to a kind of micro-shaped motor, specifically, relates to a kind of cellular flat brushless motor that is used for.

Background technology

Use cell phone to bring mobile communication to us, make people's life can not leave it, parts in the cell phone are exactly the vibrating motor as standard feature, are used to quietly pointing out incoming call or information under the occasion.

But, these nearly all motors all are the mechanical commutation vibrators, such vibrating motor life-span is short, and generation electric spark, recently, such vibrating motor is because short shortcoming of life-span, makes to have run into obstacle in the time of must being applied to multi-purpose mobile phone, because these mobile phone price height can not be very fast as before discarded; On the other hand, for example in some inflammable environment, the electric spark that mechanical commutator produces also has some side effects.

In the prior art, two kinds of main vibrating motors small buttony are arranged, what wherein Fig. 3 represented is the vibrating motor structural design of radial drive than book, the common effect of this design is lower, because each winding has 1/3 part to driving vibrating motor without any effect, another unfavorable factor is that coil must be used plastics mould precise injection molding and processing difficulties; What Fig. 4 represented is another kind of type, and it is more as general motor, although because its radial drive can provide more energy, it can only be equipped with the eccentric wheel of freight weight limit amount, and the result also can only provide limited vibration force.

Therefore, all there is following unfavorable factor in all prior aries:

(a) all designs because mechanical commutation arrangement and life-span short;

(b) all designs are because want accurate and special alloy is used on the mechanical commutation arrangement, make the manufacturing cost height;

(c) all designs all have only lower vibration force.

The utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of cellular, on-mechanical flat brushless motor that commutates that is used for is provided.

Flat brushless motor described in the utility model comprises cup-shaped base, capping, PCB printed circuit board (PCB) and IC control integrated circuit.On base, be installed with bolster, on bolster, be set with rotor assembly, be provided with stator module around rotor assembly, described PCB printed circuit board (PCB) is sleeved on bolster, be positioned at the top of rotor assembly and stator module, be placed in the capping, described IC control integrated circuit is arranged on the PCB printed circuit board (PCB).

Described rotor assembly comprises the bearing that is installed on the bolster, is placed in the eccentric wheel and the magnet ring that is installed in the eccentric wheel outside of the generation vibration force on the bearing.

It is fan-shaped column that described eccentric eccentric part is the cross section, and one has been worn flange, and magnet ring is filled with many to N, S magnetic pole along circumferential order.

Described stator module comprise the electromagnetism pole plate and be arranged on the electromagnetism plate grooves and base in the circle between axial coil.

Described electromagnetism pole plate comprises power on magnetic pole plate and following electromagnetism pole plate, and the magnetic pole number on upper and lower electromagnetism pole plate is plugged together identical and interlacedly.

Described base and capping are and are tightly connected the length that is of uniform thickness of the length of described bolster and motor.

Flat brushless motor described in the utility model can substitute the mechanical commutation vibrating motor, and it is a button-type, compact conformation, and all parts all are sealed in inside, can prevent leakage field, also heat radiation easily, low cost of manufacture.It can provide higher rotating speed, the stronger sense of shaking; A kind of structure that is connected complete compatibility in the size of motor with circuit is provided; Bore higher welding temperature than former technology.Supply with the controllable electric current of stator coil.

Description of drawings

Fig. 1 is the profile of flat brushless motor described in the utility model;

Fig. 2 is the stereochemical structure assembling schematic diagram of Fig. 1;

Fig. 3 and Fig. 4 are the front view and the end views of rotor eccentricity wheel;

Fig. 5 is the front view of the upper and lower pole plate of stator module;

Fig. 6 is the end view of the upper and lower pole plate of stator module;

Fig. 7 is a kind of structure of mechanical commutation vibrating motor in the prior art;

Fig. 8 is the another kind of structure of mechanical commutation vibrating motor in the prior art, i.e. third generation product.

Embodiment

Referring to Fig. 1 and Fig. 2, flat brushless motor described in the utility model comprises cup-shaped base 1, capping 2, PCB printed circuit board (PCB) 11 and IC control integrated circuit 12.On base 1, be installed with bolster 3, on bolster 3, be set with rotor assembly 4, be provided with stator module 8 around rotor assembly 4.Described PCB printed circuit board (PCB) 11 is sleeved on bolster 3, is positioned at the top of rotor assembly 4 and stator module 8, is placed in the capping 2, and the coil of stator module is supplied with Control current.PCB printed circuit board (PCB) 11 is provided with the IC control integrated circuit of being made up of transducer and control integrated circuit 12.Described transducer is placed in the position of pole change, when electric current flows through coil, will produce magnetic pole, and they will work to rotor assembly, makes the rotor running produce vibration.

Described rotor assembly 4 comprises the bearing 5 that is installed on the bolster 3, is placed in the eccentric wheel 6 and the magnet ring 7 that is installed in the eccentric wheel outside of the generation vibration force on the bearing.

Being the cross section with reference to the eccentric part of the described eccentric wheel 6 of Fig. 3, Fig. 4 is fan-shaped column, one has been worn flange 61, and described magnet ring 7 is filled with many to N, S magnetic pole according to stator design along circumferential order, can be 3-6 to the utmost point, described in the utility model is four pairs of utmost points.

Described stator module 8 comprise upper and lower electromagnetism pole plate 9 ', 9 and be arranged on electromagnetic pole (plate) 9 ' and 9 grooves in coil 10, be positioned at base 1.With reference to Fig. 5 and Fig. 6, upper and lower electromagnetism pole plate 9 ', 9 stretch out and form to the vertical bending of a side with circle in annulus by an annulus 91 respectively along equally distributed four magnetic poles 92 of circumference.Magnetic pole number on upper and lower electromagnetism pole plate is plugged together identical and interlacedly.In the practical application, the utilization mould is injection-moulded in the power-on and power-off magnetic pole plate together, to reduce the space of occupying of coil.

Described base 1 and capping 2 are and are tightly connected, and can prevent leakage field, and also heat radiation easily forms the motor of sealing button shape.The length that is of uniform thickness of the length of described bolster 3 and motor.

The material of described eccentric wheel 6 is highdensity materials, as tungsten nickel.

Claims

1. flat brushless motor comprises cup-shaped base (1), capping (2), PCB printed circuit board (PCB) (11) and IC control integrated circuit (12), it is characterized in that on base (1), being installed with bolster (3), on bolster (3), be set with rotor assembly (4), be provided with stator module (8) around rotor assembly (4), described PCB printed circuit board (PCB) (11) is sleeved on bolster (3), be positioned at the top of rotor assembly (4) and stator module (8), be placed in the capping (2), described IC control integrated circuit (12) is arranged on the PCB printed circuit board (PCB) (11).

2. flat brushless motor according to claim 1, it is characterized in that described rotor assembly (4) comprises the bearing (5) that is installed on the bolster (3), be placed in the eccentric wheel (6) of the generation vibration force on the bearing (5) and be installed in the magnet ring (7) of eccentric wheel outside.

3. flat brushless motor according to claim 2, it is fan-shaped column that the eccentric part that it is characterized in that described eccentric wheel (6) is the cross section, magnet ring (7) is filled with many to N, S magnetic pole along circumferential order.

4. according to claim 1 or 2 or 3 described flat brushless motors, it is characterized in that described stator module (8) comprise the electromagnetism pole plate and be arranged on the electromagnetism plate grooves and base in axial coil (10) between the circle.

5. flat brushless motor according to claim 4 is characterized in that described electromagnetism pole plate comprises magnetic pole plate that powers on (9 ') and following electromagnetism pole plate (9), and the magnetic pole number on the described upper and lower electromagnetism pole plate is plugged together identical and interlacedly.

6. according to claim 1 or 2 or 3 described flat brushless motors, it is characterized in that described base (1) and capping (2) are to be tightly connected the length of described bolster (3) and the length that is of uniform thickness of motor.

7. flat brushless motor according to claim 5 is characterized in that described base (1) and capping (2) are to be tightly connected the length of described bolster (3) and the length that is of uniform thickness of motor.

8. flat brushless motor according to claim 7 is characterized in that described eccentric wheel (6) makes with tungsten nickel.