CN2116989U

CN2116989U - Electromagnetic driving unit of automatic table

Info

Publication number: CN2116989U
Application number: CN 92204196
Authority: CN
Inventors: 廖英杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-09
Filing date: 1992-03-09
Publication date: 1992-09-23

Abstract

The utility model relates to an electromagnetic drive device for an automatic shaking table, which is mainly composed of an electromagnet fixed on a basal seat and an electromagnet fixed on a shaking table, wherein, when the two electromagnets are simultaneously communicated with DC pulsating current of which the frequency is approximate to the natural frequency of the shaking table, an acting force of which the frequency is approximate to the natural frequency of the shaking table is generated between the two electromagnets to push the shaking table and maintain the steady oscillation of the shaking table. The electromagnetic drive device of the utility model can start the shaking table in any static position and has the advantages of easy start, steady oscillation, no shocks and no noises.

Description

Electromagnetic driving unit of automatic table

The utility model relates to a kind of children and uses automatic shaking table, especially a kind of automatic shaking table electromagnetic actuator device.

The drive unit of existing automatic shaking table adopts motor-driven or mechanically operated mode more, but often noise is big, vibrations are big, and shaking table waves not steady, for addressing this problem, recently have and adopt electromagnetic drive mode, it as application number 90203187.2 Chinese patent, but when existing starting, this drive unit require electromagnet accurately to be positioned certain a bit, otherwise the defective that is difficult to start, another application number is that 91218293.8 Chinese patent discloses a kind of magnetic field that produces when utilizing coil electricity and the magneticaction between the soft iron electric cradle as drive unit, also exist same defective, so effect is not satisfactory.

The purpose of this utility model is to overcome above-mentioned defective, and providing a kind of does not have the static immobilization requirement to electromagnet, starts easy, shockproof, noiselessness, the automatic shaking table electromagnetic actuator device that shaking table is steadily waved.

The purpose of this utility model is achieved by the following technical solution.

This electromagnetic actuator device mainly partly is made up of two groups of electromagnet and controller, one group of electromagnet is fixed on the pedestal, another group electromagnet is fixed on the shaking table, and being fixed on the shaking table iron core of electromagnet passes freely through and is fixed in magnet spool on the pedestal, when give these two groups of electromagnetism Tie Tongs simultaneously by controller on during the dc pulse electric current, promptly produce active force between them and promote shaking table and keep it and shake.

Automatic shaking table electromagnetic actuator device of the present utility model, shockproof, noiselessness has starting easily, waves steadily, can be in the advantage of any resting position starting shaking table, sleep partially and during the shaking table run-off the straight, also can start freely the baby.

Automatically the specific embodiment and the operation principle of shaking table electromagnetic actuator device will provide in conjunction with the accompanying drawings.

Fig. 1 is automatic shaking table electromagnetic actuator device schematic diagram.

Fig. 2 is the circuit diagram of controller part.

As shown in Figure 1, this electromagnetic actuator device mainly partly is made up of two groups of electromagnet and controller, one group of electromagnet (3) is fixed on the shaking table (2), another group electromagnet (4) is fixed on the pedestal (5), the iron core (6) that is fixed in the electromagnet (3) on the shaking table (2) passes freely through and is fixed in the coil that pedestal (5) is gone up electromagnet (4), when two groups of electromagnet (3), (4) the coil direction that detours passes to mutually homophase dc pulse electric current or two groups of electromagnet (3) on the contrary simultaneously, (4) the coil direction that detours is identical and when passing to anti-phase dc pulse electric current simultaneously, two groups of electromagnet (3), (4) promptly produce repulsion between and promote shaking table (2) swing, as long as the natural oscillation frequency of the ripple frequency of dc pulse electric current and shaking table (2) near the time, shaking table (2) is sustainablely to swing reposefully.Because whenever the iron core (6) that is fixed in the electromagnet (3) on the shaking table (2) all is to pass freely through to be fixed in the coil that pedestal (5) is gone up electromagnet (4).So when sleeping shaking table (2) run-off the straight partially because of the baby, do not influence the repulsion size between two groups of electromagnet (3), (4) yet, shaking table can be started smoothly.

(1) is hitch point among Fig. 1, and (7) are the rigidity connecting rod, is fixed on the shaking table (2).The driving action of this automatic shaking table electromagnetic actuator device also can realize by the suction between two groups of electromagnet (3), (4).The dc pulse electric current of drive magnet provides by the controller of being made up of circuit shown in Figure 2.

Claims

1, a kind of automatic shaking table electromagnetic actuator device of being made up of electromagnet is characterized in that one group of electromagnet (3) is fixed on the shaking table (2), and another group electromagnet (4) is fixed on the pedestal (5).

2, automatic shaking table drive unit according to claim 1 is characterized in that: the iron core (6) that is fixed in the electromagnet (3) on the shaking table (2) is the coil that passes freely through the electromagnet (4) that is fixed on the pedestal (5).