CN2293895Y

CN2293895Y - Automatic switch for electric device

Info

Publication number: CN2293895Y
Application number: CN 97203886
Authority: CN
Inventors: 朱博全
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-16
Filing date: 1997-01-16
Publication date: 1998-10-07
Anticipated expiration: 2007-01-16

Abstract

The utility model relates to an automatic switch for an electric device. The utility model is characterized in that a timing circuit is composed of an electronic timer and a micro current contactor, the signal output of a vibrating bell of the electronic timer is bridged with the current coil of the micro current contactor, a normally open contact of the electronic timer is connected with the return circuit of a power supply of a coil of a control relay in series, and the control relay uses a dry cell as the power supply. The normally open contact of the control relay is connected with the return circuit of the power supply of the electric device in series. The utility model is provided with a self-protecting circuit, and the self-protecting circuit is composed of a transformer, a rectification circuit and a maintaining relay. The normally open contact of the maintaining relay is connected with the normally open contact of the control relay in parallel. The utility model is matched with household appliances. When the utility model is used, the domestic appliance can be opened and closed with automatic timing.

Description

The electrical equipment automatic switch

The utility model relates to a kind of appliance switch, more particularly, is a kind of timing switch that household electrical appliance are controlled automatically of especially can be used to.

In order to adapt to more and more fast rhythm of life, people require more and more high for the automatic controlled function of household electrical appliances, as electric rice cooker can the self-timing energized, television set can open or the like by self-timing, though more existing high-grade electrical equipment can be realized full automation, but, it costs an arm and a leg, and can not generally be accepted by consumers in general.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and a kind of electrical equipment automatic control switch is provided, and the ordinary appliances of automatic switch and family expenses is used, and can finish the timing automatic open and close of electrical equipment well.

The purpose of this utility model is achieved through the following technical solutions.

Architectural feature of the present utility model is that the timing circuit that is made of electronic timer M1 and little contactor J1 is set, the little contactor J1 of the quarter-bell signal output part cross-over connection current coil L1 of described electronic timer M1, it is in the control relay J2 coil power loop of power supply that its normally opened contact K1 is serially connected in dry cell E, the normally opened contact K2 of relay J 2 is serially connected in the electrical appliance electric power loop: do not put the holding circuit that is made of transformer B, rectification circuit D and latching relay J3 simultaneously, relay J 3 normally opened contact K3 and normally opened contact K2 are connected in parallel.

Compared with the prior art, simple in structure, the reliable operation, easy to operate of the utility model.After by the electronic timer timing, just enter the moving control procedure of order, in case arrive the time of setting, the quarter-bell signal output part output pulse current of electronic timer, by little contactor J1, control relay J2 and latching relay J3, make the electrical appliance power supply be switched on, and keep.Simple in structure, the reliable operation of the utility model if simultaneously two electronic timers and control corresponding relay are set, can realize easily that the timing of electrical appliance is opened and regularly closed, and reaches full-automatic.In addition, the utility model is owing to adopt electronic timer, and its timing can be accurate to " branch ".

Fig. 1 is the utility model structural representation.

Fig. 2 is another example structure schematic diagram of the utility model.

By the following examples, in conjunction with the accompanying drawings, the utility model is further described.

Embodiment 1:

Referring to Fig. 1, the timing circuit that setting is made of electronic timer M1 and little contactor J1. the little contactor J1 of the quarter-bell signal output part cross-over connection current coil L1 of described electronic timer M1, it is that the normally opened contact K2 of relay J 2 is serially connected in the electrical appliance electric power loop in the relay J 2 coil power loops of power supply that its normally opened contact K1 is serially connected in dry cell E; Be provided with simultaneously by transformer B.The holding circuit that rectification circuit D and relay J 3 constitute, relay J 3 normally opened contact K3 and normally opened contact K2 are connected in parallel.

During use, at first set electronic timer M1, when timing then, timer M1 is at its quarter-bell signal output part output pulse signal, to making coil L1 electricly instantaneous, and contact K1 closure, moment closing coil L2 electric power loop makes contact K2 closure, finally connects the electrical appliance power supply.Because the setting of latching relay J3, after relay coil J2 dead electricity, the electrical appliance power supply keeps connecting.Among the figure, the setting of capacitor C 1, C2 makes the time that electric current is kept among the coil L2 can protect just follow-up circuit action message.

Embodiment 2:

Referring to Fig. 2, the timing circuit that setting is made of electronic timer M1 and little contactor J1, the little contactor J1 of the quarter-bell signal output part cross-over connection current coil L1 of described electronic timer M1, it is in the relay J 2 coil power loops of power supply that its normally opened contact K1 is serially connected in dry cell E, the normally opened contact K2 of relay J 2 is serially connected in the electrical appliance electric power loop, the holding circuit that is made of transformer B, rectification circuit D and relay J 3 is set simultaneously, and relay J 3 normally opened contact K3 and normally opened contact K2 are connected in parallel.

In the present embodiment, same another road timing circuit that constitutes by another electronic timer M2 and little contactor J4 that is provided with, the little contactor J4 of the quarter-bell signal output part cross-over connection current coil L4 of described electronic timer M2, it is that the normally-closed contact K5 of relay J 5 is serially connected in the input circuit of rectification circuit D in the relay J 5 coil power loops of power supply that its normally opened contact K4 is serially connected in dry cell E.

M1 is for timing is opened, M2 closes for timing.During use, at first set the timing of electronic timer M1 and M2, it is identical with embodiment 1 that it regularly starts the process of work, when M2 was timed to, the corresponding actions through relay J 4, J5 made rectification circuit D input pull-down, then coil L3 dead electricity, contact K3 disconnects, and cuts off the electrical appliance power supply, reaches the regularly purpose of pass.

In the various embodiments described above, adopt rechargeable battery E, and charge switch K6 is set, connect 6 of K switch and can directly charge battery E.

Claims

1, a kind of electrical equipment automatic switch, it is characterized in that, the timing circuit that setting is made of electronic timer M1 and little contactor J1. the little contactor J1 of the quarter-bell signal output part cross-over connection current coil L1 of described electronic timer M1, it is that the normally opened contact K2 of control relay J2 is serially connected in the electrical appliance electric power loop in the control relay J2 coil power loop of power supply that its normally opened contact K1 is serially connected in dry cell E; The holding circuit that is made of transformer B, rectification circuit D and latching relay J3 is set simultaneously, and latching relay J3 normally opened contact K3 and normally opened contact K2 are connected in parallel.

2, automatic switch according to claim 1, it is characterized in that, same another road timing circuit that constitutes by another electronic timer M2 and little contactor J4 that is provided with, the little contactor J4 of the quarter-bell signal output part cross-over connection current coil L4 of described electronic timer M2, it is that the normally-closed contact K5 of control relay J5 is serially connected in the input circuit of rectification circuit D in the control relay J5 coil power loop of power supply that its normally opened contact K4 is serially connected in dry cell E.