CN2800562Y

CN2800562Y - Safety socket which can automatically lock when power-off

Info

Publication number: CN2800562Y
Application number: CN 200520031171
Authority: CN
Inventors: 张哲铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-01
Filing date: 2005-07-01
Publication date: 2006-07-26
Anticipated expiration: 2015-07-01

Abstract

The utility model discloses a safety socket which can automatically lock when power-off. The utility model has the technical scheme that a combinational switch circuit (1), a transformer (2), a bridge filtering rectifier circuit (3) and a relay coil J are orderly connected between an alternating current power supply and a common socket (4); the combinational switch circuit (1) is formed by that two double-contact light touch linking normally-open switches K are respectively connected with two normally-open contact J1, J2 of a relay; the double-contact light touch linking normally-open switches K are formed by that two single contact light touch switches are combined; only if the switches K are pressed, the socket (4) is with electricity; after commercial power is cut off, the commercial power is restored, and the electricity can be obtained by the socket (4) of the switches K being pressed. The utility model has the characteristics of safety and energy saving.

Description

Power failure self locking safety socket

One, technical field

The utility model relates to a kind of power failure self locking safety socket, and when mains failure, this socket can self-locking, even when sending a telegram here, socket does not still have electricity, so not only safety but also energy-conservation again.

Two, background technology

The socket of Shi Yonging is common socket mostly in the market, this socket is directly to be connected on the AC power by two or three wires, it is comparatively favourable for refrigerator etc. needs the electrical equipment of continued power, but electrical equipment such as the electric light that generally uses for family, TV, forget after owing to have a power failure turn off mains switch in case when not only recovering incoming call since the people be absent from the scene and cause in vain consumed power and but also to have potential safety hazard phenomenon, power failure self locking safety socket be exactly a kind of novel socket that designs for the problem that solves above-mentioned existence.

Three, summary of the invention

The purpose of this utility model provides a kind of power failure self locking safety socket, this socket can avoid having a power failure back owing to forget shut mains switch when recovering incoming call owing to people's socket that is absent from the scene is switched on always, cause electrical equipment to waste electric energy and may bring unnecessary potential safety hazard.

For achieving the above object, power failure self locking safety socket of the present utility model comprises the combinational, transformer, the bridge-type filter rectifier that are connected successively between AC power and the socket; Described combinational by two double-contacts touch interlock normal open switch K respectively with two normally opened contact J of relay J ₁, J ₂Compose in parallel, described double-contact touches coupled switch K and is combined by two single contact touch-switchs; Socket directly links to each other with combinational; The transformer secondary output coil connects the input of bridge-type filter rectifier, and relay coil J connects the output of bridge-type filter rectifier.The utility model can be widely used in multiple electrical appliance, uses this socket, and both safety had had energy-conservationly, had market prospects and inexpensive being easy to do preferably.

Four, description of drawings

Fig. 1 is a circuit diagram of the present utility model.

1, switching circuit 2, transformer 3, bridge-type filter rectifier 4, socket

Five, embodiment

Below in conjunction with accompanying drawing execution mode of the present utility model is described further.According to shown in Figure 1, power failure self locking safety socket of the present utility model comprises the combinational 1, transformer 2, the bridge-type filter rectifier 3 that are connected successively between AC power and the socket 4; Described combinational 1 by two double-contacts touch interlock normal open switch K respectively with two normally opened contact J of relay J ₁, J ₂Compose in parallel, described double-contact touches coupled switch K and is combined by two single contact touch-switchs; Socket 4 directly links to each other with combinational 1; The secondary coil of transformer 2 connects the input of bridge-type filter rectifier 3, and relay coil J connects the output of bridge-type filter rectifier 3.In combinational 1, when K switch is not pressed, there is not electricity in the socket, when K switch is pressed, two normally opened contact J of relay J ₁, J ₂Closure, the socket electrifying electricity, this moment trip switch K because socket self-locking, the civil power on, socket is connected civil power always, relay discharges when civil power stops, two normally opened contact J ₁, J ₂Disconnect, socket does not have electricity, even civil power recovers incoming call again, because K switch is in two normally opened contact J of off-state and relay J ₁, J ₂Disconnect, still do not have in the socket.

Claims

1, a kind of power failure self locking safety socket is characterized in that: be connected with combinational (1), transformer (2), bridge-type filter rectifier (3) and relay coil J between AC power and socket (4) in turn; Combinational (1) by two double-contacts touch interlock normal open switch K respectively with two normally opened contact J of relay J ₁, J ₂Compose in parallel, double-contact touches coupled switch K and is combined by two single contact touch-switchs; Socket (4) directly links to each other with combinational (1), and transformer (2) secondary coil connects the input of bridge-type filter rectifier (3), and relay coil J connects the output of bridge-type filter rectifier (3).