CN2742661Y

CN2742661Y - Flat motor

Info

Publication number: CN2742661Y
Application number: CN 200420088659
Authority: CN
Inventors: 徐玲霞; 刘晋权
Original assignee: Shuanghuan Quanxi Electromechanical Co ltd Shenzhen City
Current assignee: Shuanghuan Quanxi Electromechanical Co ltd Shenzhen City
Priority date: 2004-09-23
Filing date: 2004-09-23
Publication date: 2005-11-23
Anticipated expiration: 2014-09-23

Abstract

The utility model relates to a flat motor, comprising a casing component, a rotor armature component, and a stator brush component, wherein, the casing component comprises an upper and a lower casings, and the upper and the lower casings can be fastened; the rotor armature component comprises a zygomorphic commutator, two hollow coils which are symmetrically arranged on the commutator, a vibrator, and a bearing which is threaded through the middle of the commutator; the commutator is hexapole commutator structure; the direction between segments of the commutator and the radial direction of the commutator form a certain angle. The vibrator is arranged on the side edge of the circuit board of the commutator. The stator brush component comprises a shaft threaded in the bearing, a flexibility circuit board, a brush, and a magnetic loop, wherein, the magnetic loop is a quadrupole magnetization type structure, and the magnetization direction and the direction of the commutator form a certain angle. The flat motor has small electromagnetic interference, the commutation of the motor is very stable, the sparking is minimal, and the motor efficiency is high; the power output by the motor is large, the electric current is small, the running process has no dead point, and the starting of the motor is sensitive.

Description

Flat electric machine

[technical field]

The utility model relates to a kind of motor, relates in particular to a kind of flat electric machine, and it is used for the vibration source of mobile communication terminal and the servo unit of automatic control system etc.

[background technology]

Mobile communication terminal is received signal, normally reminds the user by the tinkle of bells, but the tinkle of bells mode can produce interference to the people around, especially in some public places, needs the occasion of protection solemn silence as meeting-place, hospital etc.Therefore, mobile communication terminal all can be set to the vibration prompt mode, and its vibration source mainly is a flat electric machine.

Application number is that 02104523.2 Chinese patent discloses a kind of flat permanent magnetic DC vibrating motor, and its rotor winding is two groups of different coils arranged side by side along axis direction, sees from both ends of the surface to be fan-shaped substantially, is arranged on the same semi-circumference.Dress flat commutator in the end face of rotor winding.The permanent magnetism magnetic pole of stator cage one end inboard stretches in the semi-circular recesses of rotor winding end face, and axial air-gap is little.Rotor winding, flat commutator and rotor shaft are assembled into one with plastic forming technology, are contained in the stator cage with self-lubricating bearing with rotating shaft.The centre-of gravity shift of this motor rotor own does not need to join eccentric component.The rotor winding coil adopts the single wave winding connected mode of DC motor, and two groups of coils are all switched on during work, have improved the space availability ratio of winding.

But existing this flat permanent magnetic DC vibrating motor inertia height, time constant are greatly, starting is insensitive, electromagnetic interference big and efficient is not high.

[summary of the invention]

In order to overcome the problem that above-mentioned existing flat permanent magnetic DC vibrating motor exists in actual use, the utility model provides a kind of flat electric machine, and its electromagnetic interference is little, and electric motor starting sensitivity, commutation very steadily, efficient is high.

For achieving the above object, the utility model adopts following technical scheme: a kind of flat electric machine, and it comprises case component, armature rotor assembly and stator brush assembly of electric, this case component comprises the upper and lower casing that can fasten mutually.Wherein, this armature rotor assembly comprises and one is symmetrical commutator, is symmetricly set in two air core coils, the ticker on the commutator and is arranged in the bearing at commutator middle part, this commutator is a sextupole commutator structure, direction and commutator radial direction are angled between its commutator segment, and ticker is located at a lateral margin place of commutator circuit board; This stator brush assembly of electric comprises axle, flexible PCB, brush and the magnet ring that is arranged in the bearing, and wherein this magnet ring is four utmost points formula structures that magnetize, and its magnetizing direction and commutator direction are angled.

Compared to traditional flat permanent magnetic DC vibrating motor, flat electric machine of the present utility model has following beneficial effect: volume is little, light weight, electromagnetic interference are little, and owing to adopt sextupole commutator structure, motor commutation very steadily, spark is minimum, electric efficiency is high; In addition, stator magnetic ring adopts four utmost points structure that magnetizes, guaranteed that motor is exerted oneself greatly, electric current is little and operation process in do not have the dead point, guaranteed that armature can both be with very little starting voltage starting, electric motor starting sensitivity in any position.

[description of drawings]

Fig. 1 is the cutaway view of the utility model flat electric machine.

Fig. 2 is the structural representation of the armature rotor assembly of the utility model flat electric machine.

Fig. 3 and Fig. 4 are respectively the structural representations of the stator brush assembly of electric of the utility model flat electric machine.

Fig. 5 and Fig. 6 are respectively the brush schematic diagrames of the utility model flat electric machine.

[embodiment]

See also Fig. 1, flat electric machine of the present utility model comprises case component 1, armature rotor assembly 2 and stator brush assembly of electric 3.

This case component 1 comprises upper casing 11, the lower casing 12 that can fasten mutually.Wherein, be provided with an axis hole 121 at the middle part of lower casing 12, and be provided with groove 111 in the inboard correspondence at upper casing 11 middle parts.This case component 1 comprises that also one is positioned at the pad 13 of the groove 111 of upper casing 12.

As shown in Figure 2, this armature rotor assembly 2 comprises and one is symmetrical commutator 21, is arranged at two air core coils 22, the ticker 23 on the commutator 21 and be arranged in the bearing 24 at commutator 21 middle parts symmetrically.Wherein, this commutator 21 is a sextupole commutator structure, direction and commutator 21 radial direction are angled between its commutator segment, like this, during the armature running, the sheet spacing is very little, motor commutation more steady this commutator 21 surface gold-plating or other noble metals, make motor have extremely strong antiseptic power and reach contact reliability preferably, also be provided with a dead eye (figure indicates) at commutator 21 middle parts; Ticker 23 is lateral margin places that are located at commutator 21, and it adopts the high specific gravity material to make.This bearing 24 is located in the dead eye on the commutator 21, and this bearing 24 adopts oiliness bearings.This armature rotor assembly 2 is to be assembled into one by injection molded and commutator 21 again after successively being assembled into this ticker 23 and air core coil 22 on the commutator 21, this armature structure has overcome traditional armature structure and has adopted the labyrinth of coil being installed in the plastic frame, bar magnet being installed, production efficiency is low, and the armature gauge is inconsistent, the commutator angle is inconsistent, be prone to phenomenons such as dead point.

As shown in Figures 3 and 4, this stator brush assembly of electric 3 comprises axle 31, brush 32, magnet ring 33 and the flexible PCB 34 that is arranged in the bearing 24.Wherein, these 31 two ends are located in respectively in the axis hole 121 of the groove 111 of upper casing 11 and lower casing 12; As Fig. 5, shown in Figure 6, this brush 32 is the moulding brush that bends of connecting, and its end is provided with the contact site 321 with commutator 21 Elastic Contact; This magnet ring 33 is four utmost points formula structures that magnetize, its magnetizing direction and commutator direction are angled, guaranteed that motor is exerted oneself greatly, electric current is little and operation process in do not have the dead point, guaranteed that armature can both be with very little starting voltage starting, electric motor starting sensitivity in any position.In addition, designed the rational position and the height of brush and the best between magnet ring, guaranteed brush and commutator coupling, contact is reliable, thereby has guaranteed every stable performance of complete machine.

Claims

1, a kind of flat electric machine, it comprises case component, armature rotor assembly and stator brush assembly of electric, this case component comprise can fasten mutually on, lower casing, this armature rotor assembly comprises that one is symmetrical commutator, one be located at the commutator circuit board a lateral margin place ticker and be arranged in the bearing at commutator middle part, this stator brush assembly of electric comprises the axle that is arranged in the bearing, flexible PCB, brush and magnet ring, it is characterized in that: this armature rotor assembly also comprises two air core coils that are symmetricly set on the commutator, this commutator is a sextupole commutator structure, and direction and commutator radial direction are angled between its commutator segment; This magnet ring is four utmost points formula structures that magnetize, and its magnetizing direction and commutator direction are angled.

2, flat electric machine as claimed in claim 1 is characterized in that: this brush is the moulding brush that bends of connecting, and its end is provided with the contact site with the commutator Elastic Contact.

3, flat electric machine as claimed in claim 1 is characterized in that: this ticker adopts the high specific gravity material to make.

4, flat electric machine as claimed in claim 1 is characterized in that: this case component comprises that also one is positioned at the pad of upper casing inboard rotor armature assembly top.

5, flat electric machine as claimed in claim 1 is characterized in that: be provided with a dead eye at the commutator middle part, bearing promptly is located in this dead eye.

6, flat electric machine as claimed in claim 5 is characterized in that: this bearing is an oiliness bearing.

7, flat electric machine as claimed in claim 1 is characterized in that: this commutator surface gold-plating.

8, flat electric machine as claimed in claim 1 is characterized in that: this commutator, air core coil and ticker are assembled into one by injection molded.