CN2211671Y

CN2211671Y - Linear vibrating motor with moveable core

Info

Publication number: CN2211671Y
Application number: CN 94244614
Authority: CN
Inventors: 宋海州; 李杨森
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-11
Filing date: 1994-11-11
Publication date: 1995-11-01
Anticipated expiration: 2004-11-11

Abstract

The utility model relates to a linear vibrating motor with a moveable core, comprising a housing, a bearing and a stator. Two pairs of magnetic poles provided with two winding circuits connected in parallel are arranged on the stator in axial direction, and each winding circuit is respectively connected in series with a rectifying diode. A movable iron core capable of reciprocating along the central axis is installed at the center of the stator, and a guide spring is sheathed on the central axis of the movable iron core. The utility model has the advantages of high efficiency, low noise, small volume, long service life and broad application range.

Description

Linear vibrating motor with moveable core

The utility model relates to a kind of moveable core linear type vibration motor, and the moving iron core of this motor can carry out linear vibration along central axis.

Conventional motor all has casing, stator, winding and rotor, rotor through Bearing Installation on casing, conventional motor converts electric energy to mechanical energy rotation output, drive rotating machinery, when driving mechanical that some moves along a straight line, must could realize by some switching mechanisms, not only strengthen the volume of equipment and invested but also increased the consumption of energy.

The purpose of this utility model is to propose a kind of moveable core linear type vibration motor, and this motor can convert electric energy to mechanical energy, exports in the mode of double vibrations.

The purpose of this utility model is achieved in that a kind of moveable core linear type vibration motor, casing, bearing and stator are arranged, two pairs of magnetic poles of this stator upper edge axially-aligned, the winding circuit of two-way parallel connection is housed on the two pairs of magnetic poles, the rectifier diode of connecting in the winding circuit of every road, the moving iron core that the installation of stator central authorities can move back and forth along central axis, suit retainer spring on the central shaft of this moving iron core.When the utility model input single-phase alternating current, current and phase difference in the winding circuit of two-way parallel connection be 180 ° promptly when electromotive force is in positive half cycle, diode current flow in the first via winding circuit, electric current in this winding circuit makes first pair of magnetic pole produce magnetic field, moving iron core is moving in this magnetic pole under the effect in magnetic field, promptly make positive movement along central axis, when electromotive force is in negative half period, diode current flow in the second tunnel winding circuit, electric current in this winding circuit makes second pair of magnetic pole produce magnetic field, moving iron core changes the direction of motion under the effect in magnetic field, move in second pair of magnetic pole, promptly does counter motion along central axis.Go round and begin again, moving iron core is just at two pairs of magnetic pole intercropping double vibrationses.

Compared with the prior art the utility model has following advantage: because the reciprocating motion of moving iron core is to be dragged by the magnetic field that the AC power positive-negative half-cycle produces, thereby efficient is higher and do not have an impact noise.Because two pairs of magnetic poles are closely arranged vertically, have reduced overall dimension.Owing to make noncontacting switch with rectifier diode in the winding circuit of every road, thereby switch is reliable and the life-span is long.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1, structural representation of the present utility model

Fig. 2, pole arrangement schematic diagram of the present utility model (Figure 1A-A analyses and observe)

Fig. 3, electrical schematic diagram of the present utility model

Referring to moveable core linear type vibration motor shown in the drawings, casing 10 is arranged, bearing 9 and stator are housed on it, two pairs of magnetic poles 2 of this stator upper edge axially-aligned and 3, two pairs of magnetic poles can overlappingly be installed.Also can vertically install mutually.Embodiment shown in Figure 2 is the vertical mutually installations of two pairs of magnetic poles.The

winding circuit

4 and 5 of two-way parallel connection is housed on the two pairs of magnetic poles, a rectifier diode D1 and D2 connect in the winding circuit of every road, the connection of two rectifier diodes is opposite, the moving iron core 1 that the installation of described stator central authorities can move back and forth along central axis, be somebody's turn to do

suit retainer spring

6 and 7 on the central shaft 8 that moves iron core, the effect of retainer spring is the static position that keeps moving iron core.Present embodiment is the motor of 35 watts of power outputs, 12 millimeters of stator shaft orientation length, the thickness of every pair of magnetic pole is 6 millimeters, every road winding is 1450 circles, and moving iron core axial width is 7 millimeters, 6 millimeters of reciprocating strokes, import 220 volts 50 hertz alternating current, the normal thrust of motor can reach 29.4 newton, per minute vibration 3000 times, and the utility model can be used for mini air compressor, vibrator and micropump.

Claims

1, a kind of moveable core linear type vibration motor, casing, bearing and stator are arranged, magnetic pole and winding are housed on this stator, it is characterized in that, the winding circuit of two-way parallel connection is housed, the rectifier diode of connecting in the winding circuit of every road on two pairs of described magnetic poles of described stator upper edge axially-aligned, the two pairs of magnetic poles, the moving iron core that the installation of described stator central authorities can move back and forth along central axis, suit retainer spring on the central shaft of this moving iron core.

2, moveable core linear type vibration motor according to claim 1 is characterized in that, described two pairs of magnetic poles are vertical mutually to be installed.