CN201360083Y

CN201360083Y - Micro-loading APO (automatic power off) safety socket board

Info

Publication number: CN201360083Y
Application number: CNU2009200634622U
Authority: CN
Inventors: 雷世荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-25
Filing date: 2009-02-25
Publication date: 2009-12-09
Anticipated expiration: 2019-02-25

Abstract

A micro-loading APO (automatic power off) safety socket board includes a board body, a plug and at least one output socket, and is characterized in that a control circuit board for micro-loading APO is arranged in the plug or the board body; the input terminals of a live wire and a zero line (with the alternating voltage at 220 V) of the control circuit board are electrically connected with a temperature controlled switch; the output terminal of the temperature controlled switch is connected with each output power supply socket on the socket board; a pressure sensitive resistor used for over-voltage protection, as well as a temperature controlled circuit used for controlling the series connection between a PTC heating sheet and a thyristor, is connected between an output live line and a zero line of the temperature controlled switch; a circuit formed by series connection of a resistor and a rectifier diode is arranged between the control electrode and the output zero line of the thyristor, wherein the rectifier diode supplies the triggering current to the thyristor; and an electrolytic capacitor and a loading detection circuit are connected in parallel between the control electrode and the output zero line of the thyristor. When electric equipment is powered off by a remote controller or program, all of the electric applications connected with the socket board can be cut off from the alternating current power supply, thereby achieving the purposes of safety, reliability, as well as energy and power conservation.

Description

The micro-loading safety socket plate that cuts off the power supply automatically

[technical field]

The utility model relates to a kind of power socket board, is a kind of micro-loading safety socket plate that cuts off the power supply automatically specifically.

[background technology]

Raising along with people's living standard, present each office, enterprise, school, even most of families all have been equipped with multiple electric equipment, as television set, computer, printer etc., the power supply of these electric equipments generally provides through power socket board, though be provided with hand switch and overcurrent fuse on the present power socket board, but some people dislikes trouble, often only with remote controller or program shutdown, make electrical equipment be in the wait state of dormancy, the equipment that still is connected after these shutdown with power supply, still having certain electric current is that little electric current flows through, and has both caused the waste of the energy and the electricity charge, the more important thing is also to exist many unsafe hidden danger, often, cause any property loss or loss of life or personal injury because of contingencies such as ageing equipment or thunder and lightning cause electrical fire.

[summary of the invention]

For overcoming the above-mentioned defective of existing power supply socket, the utility model provides a kind of socket that can close power supply on the socket under little electric current automatically, i.e. the safety socket plate of micro-loading auto-power-off device.

For solving its technical problem; the technical solution adopted in the utility model is: comprising plate body; be provided with the micro-loading control circuit board of outage automatically in the plug of the power socket board of plug and at least one accessory power outlet or the plate body; be electrically connected with a temperature detect switch (TDS) on 220 volts of live wires of the interchange of this control circuit board and the zero line input; the output of this temperature detect switch (TDS) is connected on each out-put supply socket of socket; between the output live wire of temperature detect switch (TDS) and zero line, be connected with the piezo-resistance that is used for overvoltage protection and be used to control the temperature control circuit that the PTC heating sheet of temperature switch is connected with controllable silicon; the promising controllable silicon of design provides the rectifier diode of trigger current and the circuit that resistance connect between the silicon controlled control utmost point and output live wire, controls the utmost point and export between the zero line at silicon controlled to be parallel with electrochemical capacitor and load detecting circuit.Described testing circuit is by negative-positive-negative transistor, and two positive-negative polarities in parallel oppositely are connected between transistor emitter and the base stage crystal diode and a resistance are formed by connecting.

Compare with existing power socket board, the utility model has following characteristics: except that the hand switch that general socket is arranged, also be provided with the micro-loading control switch that cuts off the power supply automatically, be applicable to remote-control closedown such as television set and program shutdown as computer etc., computer particularly, often be inserted with main frame on the power socket board, display, printer, sound equipment etc., these equipment have does not have switch at all, socket is placed on the shelter again, inconvenient operation is with the micro-loading socket that cuts off the power supply automatically, as long as you turn off host power supply with program or remote controller, just can relievedly leave, after the time-delay about 30 seconds, the power supply on the socket will automatically shut down, and is not only convenient but also reach safety, power saving, but also lightning protection, prolong service life of equipment.

[description of drawings]

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is embodiment 1 structural representation of the present utility model.

Fig. 2 is embodiment 2 structural representations of the present utility model.

Fig. 3 is the electrical schematic diagram of temperature control circuit among Fig. 1,2.

Among the figure: 1, attaching plug, 2, temperature control circuit board, 3, power output socket, 4, plate body.

[embodiment]

Embodiment 1: with reference to accompanying drawing 1 and Fig. 3: the end at the plate body 4 of supply socket box plate is connected with attaching plug 1 by lead, at the box body internal fixation temperature control circuit board 2 is arranged, be welded with temperature control circuit as shown in Figure 3 on this temperature control circuit board, the output of this temperature control circuit board is connected in parallel at least one and is fixed on power output socket 3 on the plate body panel.The power input of described temperature control circuit is serially connected with the normally closed hand-reset control of KSD switch, electricity heating sheet PTC and model that the output of this temperature detect switch (TDS) is parallel with 180 ℃ of 5W are the controllable silicon BT of BT139, except that the electrochemical capacitor C that is electrically connected with 100～200uf, also being connected with model is the crystal diode D of 1N4007 on this silicon controlled grid ₁And resistance R ₁One end of series circuit, the other end of this series circuit directly is connected on the power output end of temperature detect switch (TDS) KSD, also be electrically connected with model on the controllable silicon grid and be the collector electrode of 9014 transistor G, being parallel with two models between the emitter of this triode and the grid is the crystal diode D that the 1N5408 and the pole reversal are connected ₂, D ₃With a resistance R ₂, forming node a and b respectively, node a connects transistor emitter, and node b connects the triode control utmost point, and a, b node are serially connected in the zero line loop of out-put supply.During work; utilize the conducting of the magnitude of voltage control triode between node a and b or end; and make temperature detect switch (TDS) TK automatic disconnection by the silicon controlled on/off; reach the purpose of security appliance that protection connects; this temperature detect switch (TDS) TK is provided with the hand-reset button, and must press hand push button before powering up could normal power supply.

Embodiment 2: with reference to accompanying drawing 2 and Fig. 3: the end at the plate body 4 of supply socket box plate is connected with attaching plug 1 by lead, at attaching plug 1 internal fixation temperature control circuit board 2 is arranged, be welded with temperature control circuit as shown in Figure 3 on this temperature control circuit board, the output of this temperature control circuit board is connected in parallel at least one and is fixed on power output socket 3 on the plate body panel.The structure of temperature control circuit is identical with embodiment's 1.

Embodiment 3: on the basis of embodiment 1 and embodiment 2, the KSD temperature detect switch (TDS) of control circuit board and DTC heating sheet are placed in the plug 1, and the remaining circuit of control circuit board is placed in the socket plate body 4, all the other structures are with

embodiment

1 or 2.

Operation principle of the present utility model is: after the hand-reset of KSD temp control switch is connected, power supply is added on the socket, though at this moment each power consumption equipment is not worked immediately, because the time-lag action of temp control switch, circuit can't disconnect, when power consumption equipment was worked, electric current was by L1 load Rf, D2 D3R2 and form current supply circuit to L2, at a, b keeps at two ends the voltage about 0.7V, triode G saturation conduction, and the voltage of silicon controlled control utmost point g is 0, not conducting of controllable silicon, the PTC no current flows through, and the KSD temperature detect switch (TDS) is failure to actuate, the circuit normal power supply.When load Rf is very little (near 0), because the effect of resistance R 2, a, the voltage that b is 2 is lower than the conducting voltage of triode, and triode ends, and silicon controlled control utmost point g obtains trigger current by D1R1, the controllable silicon conducting, the PTC heating, the KSD temperature detect switch (TDS) disconnects after about 30 seconds, and the socket power supply thoroughly turn-offs.Wherein the effect of D1 and C is for a stable DC voltage is provided between SCR control utmost point g and the triode ce.Starting the reset button that manually clicks KSD of powering once more gets final product.

Claims

1; the micro-loading safety socket plate that cuts off the power supply automatically; comprise plate body; plug and at least one accessory power outlet; it is characterized in that: in the plug of power socket board or plate body, be provided with the micro-loading control circuit board of outage automatically; be electrically connected with a temperature detect switch (TDS) on 220 volts of live wires of the interchange of this control circuit board and the zero line input; the output of this temperature detect switch (TDS) is connected on each out-put supply socket of socket; between the output live wire of temperature detect switch (TDS) and zero line, be connected with the piezo-resistance that is used for overvoltage protection and be used to control the temperature control circuit that the PTC heating sheet of temperature switch is connected with controllable silicon; the promising controllable silicon of design provides the rectifier diode of trigger current and the circuit that resistance connect between the silicon controlled control utmost point and output live wire, controls the utmost point and export between the zero line at silicon controlled to be parallel with electrochemical capacitor and load detecting circuit.

2, the micro-loading according to claim 1 safety socket plate that cuts off the power supply automatically, it is characterized in that: described testing circuit is by negative-positive-negative transistor, and two positive-negative polarities in parallel oppositely are connected between transistor emitter and the base stage crystal diode and a resistance are formed by connecting.

3, the micro-loading according to claim 1 and 2 safety socket plate that cuts off the power supply automatically, it is characterized in that: described temperature detect switch (TDS) is the normally closed hand-reset temperature detect switch (TDS) of KSD.