CN2824398Y

CN2824398Y - Power cut protector

Info

Publication number: CN2824398Y
Application number: CN 200520049745
Authority: CN
Inventors: 彭黎明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-11
Filing date: 2005-04-11
Publication date: 2006-10-04
Anticipated expiration: 2015-04-11

Abstract

The utility model relates to a power cut protector, which is a protection device which can prevent that the power an electrical appliance is suddenly cut and is suddenly switched on to cause that the electric appliance is switched on for a long time to consume the power, shorten the service life and even generate fire accident because people are not in room or are sleep. The power cut protector is mainly composed of a power switch, a fuse, an indicating lamp and an output power socket. The utility model is characterized in that a branch circuit is composed of a normally opened push-button switch and a relay which are connected in series, the branch circuit is arranged between a live wire and a ground wire, two pairs of normally opened contacts of the relay are respectively connected with the live wire and the ground wire in series, and a pair of normally opened contacts connected with the live wire in series is connected with both ends of the normally opened push-button switch in parallel simultaneously. When the electrical appliance is switched on after the power is cut, the electricity utilization can be recovered after manually pressing the push-button switch. The utility model can prevent the electrical appliance from wasting the electric energy and accelerating the ageing of the electric appliance. The utility model can particularly stop the unexpected fire accident. The utility model is suitable for supplying the power to electrical appliances, such as heating stoves, electrical fans, television sets, computers, etc.

Description

A kind of power-failure protecting device

[technical field]

The utility model be a kind of prevent that electrical appliance from having a power failure suddenly after, incoming call causes the protective device of contingency suddenly again.

[background technology]

Along with the raising of people's living standard, the use of household electrical appliance is more and more universal.In daily life, people can often run into the unexpected power failure of multiple reason, though just do not had electricity at the household electrical appliance exterior line power supply of electricity consumption this moment, its own power source switch still is in on-state, in case outside line restores electricity, these household electrical appliance will recover energising automatically and work.If this moment, the owner or the user of electrical appliance did not exist for a long time because of multiple reason, or do not know, the just long-term power consumption of these household electrical appliance, the lighter is the waste electric energy, shortens the useful life of electrical appliance, weight person will cause fire, causes serious economy loss to the electric consumer.

[summary of the invention]

For avoiding causing waste electric energy, reduction of service life to electrical appliance because of having a power failure suddenly, even major accident such as initiation fire, the utility model provides a kind of power-failure protecting device, makes electrical appliance after power failure, when starting once more, must manually open, and does not power on otherwise add.

For solving its technical problem; the technical solution adopted in the utility model is: before the attaching plug of electrical appliance; setting up one comprises K switch, fuze B, normally open push button switch A and the relay J of two pairs of normal opened contacts is arranged and the protection box body of indicator light Z; be characterized in: on the live wire of input power supply U0, be serially connected with mains switch K and an electric current fuse B; between the end of fuse B and input power ground, be connected with one by the push-button switch A that often opens and the branch road that current relay J is connected in series, at out-put supply U ₁Live wire and ground wire on be serially connected with the two couples of normal opened contact J1 and the J2 of relay J respectively, the two ends of normal opened contact J1 wherein are connected in parallel on the two ends of normally open push button switch A by lead, in output voltage U ₁Two ends be parallel with electricity consumption indicator light Z.

Operation principle of the present utility model is: behind the current switch K that closes, electric current is through the end of fuse B to normally open push button switch A, press switch A, just connected the relay current loop, the relay adhesive, two couples of normal opened contact J1 of relay, J2 closure, make electric current constitute output loop through J1, J2 contact, externally power supply, indicator light Z is bright, and normally open push button switch A resets then, make it be off state, the end that this moment, relay push-button switch A connected links to each other by the live wire of lead with contact J1 end, continues to keep "on" position, makes output voltage U ₁Normal output; After the power failure, the relay coil outage disconnects two couples of normal opened contact J1, J2 of relay, make the live wire of output voltage all become off state with ground wire, if need energized again, because push-button switch A is in the reset condition of often opening, no current passes through in the relay coil, and relay is not worked, its contact J1, J2 are off-state, output voltage U ₁The equal no-voltage in two ends, thus play a protective role.

The beneficial effects of the utility model are: 1. the utility model can make electrical appliance because of after having a power failure, can not recover electricity consumption voluntarily, could add power supply again after must manually starting, therefore can prevent from after having a power failure suddenly, to send a telegram here suddenly again, give owner in the family not or the electricity consumer of sleep cause the power supply waste, machine loss, even breaking out of fire, the loss that brings economy and lives and properties to electricity consumer.2. the utility model is simple in structure, handling ease, and cost is low, and dependable performance is easy to utilize.

[description of drawings]

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is an electrical schematic diagram of the present utility model.

Fig. 2 is a structural representation of the present utility model.

Among the figure: 1 attaching plug, 2 casings, 3 mains switch K, 4 fuse B, 5 normally open push button switch A, 6 relay J, the contact J1 of 7 relays, the contact J2 of 8 relays, 9 indicator light Z, 10 accessory power outlet Z.

[embodiment]

On the panel of casing (2), be fixed with mains switch (3), fuse (4), normally open push button switch (5) and power supply indicator (9), at casing (2) internal fixation relay J (6) is arranged, side at casing is provided with attaching plug (1), establish the accessory power outlet (10) of power supply at the opposite side of casing (1), the live wire of external power is after plug (1) inserts body, successively with switch (3), fuse (4) series connection back is connected with the end of incoming cables of normally open push button switch (5), also be connected simultaneously with the end of the normal opened contact J1 (7) of relay, the output of push-button switch (5) is attempted by an end of relay J (6) simultaneously, one end of indicator light (9) and power output socket (10), the other end of normal opened contact J1 (7) is attempted by relay J (6) and indicator light (9) simultaneously, on the live wire contact of out-put supply socket (10), the ground wire of external power is connected in parallel to the end of incoming cables of the ground terminal and the normal opened contact J2 (8) of relay J (6) behind plug (1), the leading-out terminal of normal opened contact J2 (8) is connected on the ground wire contact of indicator light (9) and out-put supply socket (10) simultaneously.

Claims

1; a kind of power-failure protecting device; comprise casing (1); mains switch (3); fuse (4); indicator light (9); attaching plug (1); out-put supply socket (10); it is characterized in that: be connected with the branch road of connecting by normally open push button switch (5) and relay J (6) through between the live wire behind mains switch (3) and the fuse (4) and the ground wire; at a pair of normal opened contact J1 (7) that between the live wire of live wire behind the fuse (4) and out-put supply socket (10), is serially connected with relay J (6); this contact (7) also is connected in parallel on the two ends of normally open push button switch (5) simultaneously; another of relay J (6) is serially connected between the ground wire of the ground wire of relay J (6) and out-put supply socket (10) to normal opened contact J2 (8); and the contact of contact J2 (8) links to each other with the ground terminal of relay J (6); another contact of relay tip J2 is connected to respectively on the ground wire end points of out-put supply socket and indicator light, makes indicator light (10) and receives between the live wire and ground wire of out-put supply.