CN2261776Y

CN2261776Y - Automatic rocking bed

Info

Publication number: CN2261776Y
Application number: CN 96226093
Authority: CN
Inventors: 李英汉
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-28
Filing date: 1996-04-28
Publication date: 1997-09-10
Anticipated expiration: 2006-04-28

Abstract

The utility model discloses an automatic rocking bed which is driven by electromagnetic induction. The utility model comprises a bed body, a supporting frame and a driving mechanism, wherein the driving mechanism is composed of a permanent magnet and an electric magnet, and the electric magnet comprises a duplex winding coil which is wound on an iron core and a control circuit. The utility model has the advantages of simple structure, less power consumption, simple maintenance, and low cost.

Description

Automatic shaking table

The utility model relates to a kind of shaking table, especially the automatic shaking table of electromagnetic induction driving.

Automatically shaking table comprises that the kind of bassinet is a lot, and its drive principle mainly contains that motor adds toggle, electromagnet adds bent plate linkage and electromagnetic induction driving mechanism.Preceding two kinds of activation configuration complexity, noise is big, power consumption is big, cost is high, is not all adopted by reality; Use shaking table, cradle such as CN2037180U automatic shaking table, the automatic infanette of CN2044837U acoustic control, CN2058576U noiselessness acoustic control automatic cradle, the multi-function sound-controlled cradle of CN2065021U, the CN2080788U acoustic control automatic cradle of electromagnetic induction principle driver, though these Chinese patent technology have solved the big shortcoming of noise, but still have complicated, the problems such as transformer capacity is big, difficult in maintenance, cost height of design, that therefore puts into practice is few.

The purpose of this utility model provides a kind of automatic shaking table that has simple and easy electromagnetic induction driver and can eliminate above-mentioned shortcoming.

Automatic shaking table of the present utility model is made of bed body, support and driving mechanism, and the bed body is suspended on the support by rocking bar.Driving mechanism is the electromagnetic induction driver that permanent magnet and electromagnet are formed, electromagnet is fixed on the support bottom, permanent magnetic is fixed on below the bed body of corresponding electromagnet position, and electromagnet is unsettled relatively, permanent magnet is identical with the polarity of electromagnet phase near-end, and electromagnet comprises double winding coil and the control circuit on the iron core, and control coil LA and magnet exciting coil LB divide on same iron core, the base stage of the A1 termination triode BG1 of LA, the emitter stage of A2 termination dc power cathode and BG1; The end of the colelctor electrode connecting resistance R1 of BG1 and the base stage of triode BG2, another termination dc power anode of R1, the emitter stage of BG2 and the colelctor electrode of triode BG3; The base stage of BG3 connects the colelctor electrode of BG2 and an end of resistance R 2, the emitter stage of another termination BG3 of R2 and the B1 of LB end, and the B2 termination dc power cathode of LB, the positive termination dc power anode of electrochemical capacitor C, negative terminal connects dc power cathode.

Relative like product, the utlity model has simple in structure, volume is little, little power consumption, noiselessness, easy maintenance, advantage that cost is low.

Further specify structure of the present utility model below in conjunction with drawings and embodiments.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the structural representation of electromagnetic driver;

Fig. 4 is the control circuit for electromagnet schematic diagram.

Automatically shaking table is made of support 1, bed body 2 and electromagnetic induction driver, and bed body 2 is hung on support 1 by four rocking bars 6.The electromagnetic induction driver is made of permanent magnet 4 and electromagnet 5, and electromagnet 5 comprises double winding coil LA, LB and the control circuit on the iron core.Permanent magnet 4 is in the bottom of bed body 2, and electromagnet 5 is fixed on the position of the corresponding permanent magnet 4 in bottom of support 1.Magnet exciting coil LB lies prostrate DC power supply by pliotron BG3 by 6--7, during not conducting of BG3, and no current in the coil; Control coil LA is connected on just to be put in grade base circuit of triode BG1.During use, external force is swung permanent magnet a little earlier, produces an induced potential immediately in control coil A, thereby has electric current to pass through to produce an electromagnetic field among back power amplifier level conducting, the coil LB in coil LB through amplifying step by step.Because the polarity that electromagnet is provided with is repelled with the polarity of permanent magnet, thus between permanent magnet 4 and electromagnet 5 one of generation repulsive force mutually.Because permanent magnet 4 is fixed together with a bed body 2, so bed body 2 also promotes with regard to the transverse component of the power of being ostracised and swings.When bed body 2 leaves the center, just non-inductive electromotive force among the control coil LA, the power amplifier level is ended, and electric current stops among the magnet exciting coil LB, and magnetic force has also just disappeared.Bed body 2 swings to a side pole extreme position, moving by deadweight again to backswing, when through the center, the magnetic field of permanent magnet 4 makes control coil LA produce electromotive force again, make the operating current conducting of coil LB again, the magnetic force that produces affacts again on the permanent magnet, promotes bed body 2 to the other direction swing, and bed body 2 will firmly return swing owing to what inertia did not stop.Coil LA and LB adopt  type or I sections core, are beneficial to make.Add an iron plate 3 in order to every magnetic between bed body 2 base plates and permanent magnet 4, ball bearing is equipped with at the two ends of rocking bar 6.The utility model structure is very simple, only about 6 watts of power, and power consumption is minimum; Almost need not safeguard, be a kind of simple, economic and automatic shaking table with practical value.

Claims

1, a kind of automatic shaking table is made of support (1), bed body (2) and driving mechanism, and bed body (2) is suspended on the support (1) by rocking bar (6), and driving mechanism is the electromagnetic induction driver that permanent magnet (4) and electromagnet (5) are formed; Electromagnet (5) is fixed on support (1) bottom, permanent magnet (4) is fixed on below bed body (2) of corresponding electromagnet (5) position, and electromagnet (5) is unsettled relatively, permanent magnet (4) is identical with the polarity of electromagnet (5) phase near-end, the electromagnet that is characterised in that of the present utility model comprises double winding coil and the control circuit on the iron core, control pitch of the laps LA and magnet exciting coil LB divide on same iron core, the base stage of the A1 termination triode BG1 of LA, the emitter stage of A2 termination dc power cathode and BG1, the end of the colelctor electrode connecting resistance R1 of BG1 and the base stage of triode BG2, the positive pole of another termination dc source of R1, the colelctor electrode of the emitter stage of BG2 and triode BG3, the base stage of BG3 connects the colelctor electrode of BG2 and an end of resistance R 2, the emitter stage of another termination BG3 of R2 and the B1 of LB end, the B2 termination dc power cathode of LB, the positive termination dc power anode of electrochemical capacitor C, negative terminal connects dc power cathode.

2, automatic shaking table according to claim 1 is characterized in that coil LA and LB adopt  type or I sections core.

3, automatic shaking table according to claim 1 is characterized in that adding an iron plate (3) between a body (2) base plate and the permanent magnet (4).

4, automatic shaking table according to claim 1 is characterized in that ball bearing is equipped with at the two ends of rocking bar (6).