CN2499893Y - Master and slave type combined power socket box - Google Patents

Abstract

The utility model relates to a master-slave combination socket for distributing power for computer or other similar electric system, belonging to the field of home appliance or the like. The principle refers to accompanying figures. Two set of sockets are provided on a socket box. The coil of a current relay (2) is serially connected with the circuit of a master power socket group (1), and the contact of the current relay (2) is serially connected with the circuit of a slave power socket group (3). Only when the current of the equipment connected with the master power socket group (1) excesses a preset value, the current relay (2) acts to supply current to the slave power socket group (3). The coil of the current relay (2) is in parallel connected with a clamping diode group (4) at both ends for shunting overlarge current.

Description

Master-slave mode combined power socket box

The utility model belongs to family expenses and similar applications appliance field, relates to a kind of desk side computer system or other similar combined power socket box that requires the electric system distribution given.

Commercially available combined power socket box has no relation between its each socket at present.This socket box is used for master-slave mode electricity consumption occasion (peripherals such as televisor and DVD player, VCD machine, video tape recorder, karaoke machine for example, follow-up equipments such as CD player and balanced device, power amplifier, audio amplifier, peripherals such as the main frame of computing machine and display, printer, scanner) time, often main equipment and slave unit on same socket box each with a socket, power supply simultaneously, cause convenience and power saving not to take into account, seem unreasonable.On the one hand, the own power supply of incomplete cut-off usually when main equipment is not worked, but be in " wait " or " dormancy " state so as conveniently to start, convenient work.On the other hand, slave unit can't not worked naturally when main equipment was not worked, but slave unit is not cut off the electricity supply when not working for easy to operate yet now.The electric energy of slave unit consumption can not saved when therefore, main equipment was not worked.Electrical Appliances Designing at present trends towards simplified control, above the equipment that has in addition do not have can power cutoff switch (for example some display, printer, DVD player or the like): as long as coherent signal one, it enters duty at once, and it just is in energising " wait " state always when not working.Because most family expenses or similar electric system are not 24 hours every days, annual uninterrupted the use, no-load ratio is generally very high; An electric equipment waiting status though to waste electric power little, if be not related to the whole year, add up this waste electric just considerable.Under the present circumstances, want to allow this type of electric equipment not waste electricity, when unless used its power-line plug pulled up maybe from socket the switch of this socket correspondence is turned off.Like this whenever need not just pull out one by one or close one by one, whenever will be with just inserting one by one or opening one by one, obviously very inconvenient; Can certainly be with the whole cut-out of socket box power supply reaching purpose of saving, but this has just cut off the power supply of main equipment simultaneously.

The purpose of this utility model is to provide a kind of master-slave mode combined power socket box, makes when having only main equipment when being inserted in above in running order, is inserted in top slave unit and just obtains the power supply supply automatically, not only makes things convenient for but also purpose of power saving to reach.Its principle such as Fig. 1:

ACin is an alternating-current power supply; Two groups of sockets are arranged on the socket box, and one group is main power supply base group 1, and it just has electricity as long as socket box has electricity, and this group socket uses for main equipment (for example, main frame, televisor etc.).String has the coil of current relay 2 in the circuit of main power supply base group 1.Another group socket is from power supply base group 3, and string has the contact of current relay 2 in the circuit.When connection device enters duty, electricity consumption electric current greater than setting value on the main power supply base group 1, current relay 2 adhesives, just have from power supply base group 3, this group socket mainly (is for example given each slave unit, display, printer, scanner, audio amplifier that computing machine connects, the DVD player that televisor connects, VCD machine, karaoke machine or the like) use.Otherwise the main equipment state of in a single day deactivating, the supply current on the main power supply base group 1 are less than the setting value of current relay 2, and throw off current relay 2 contacts, and each slave unit that is connected on the power supply base group 3 is cut off power supply immediately.So just reached and to have kept the original usability of electric system, can when main equipment is not worked, cut off the power supply of associated peripheral automatically again so that the purpose of energy savings.

Because various main equipment power consumptions differ widely, the power consumption range during operate as normal may be from tens of watts to hundreds of watts even bigger, thereby require the coil of current relay 2 in the utility model to have bigger overcurrent to carry scope.For ease of relay design and reducing cost, can and connect catching diode group 4 at the coil two ends of current relay 2, it is made up of one or several diode series aiding connections two groups of diode reverse parallel connections, every group, make when the electric current that flows through current relay 2 reaches certain numerical value, voltage drop on it makes 4 conductings of catching diode group, more electric current just flows through through catching diode group 4, has reduced the requirement to current relay thus.

Fig. 1 also is an embodiment of the present utility model.

Claims (2)

1. master-slave mode combined power socket box, it comprises main power supply base group 1, current relay 2, from power supply base group 3, catching diode group 4.It is characterized in that: string has the coil of current relay 2 in the supply line of main power supply base group 1, at string from the supply line of power supply base group 3 contact of current relay 2 is arranged, have only after the electricity consumption electric current on the main power supply base group 1 reaches certain numerical value, current relay 2 adhesives just can obtain the power supply supply from power supply base group 3.

2. master-slave mode combined power socket box according to claim 1 is characterized in that: be parallel with catching diode group 4 on the coil of current relay 2.