CN2750517Y

CN2750517Y - Power supply extension line with built-in electronic security protection

Info

Publication number: CN2750517Y
Application number: CN 200420094172
Authority: CN
Inventors: 施蒂芬·堪波罗; 瓦利·斯崔恩; 索尔·罗森鲍; 易斯特·米斗; 华家平; 凌安寿
Original assignee: Leviton Electronic Dongguan Co Ltd
Current assignee: Leviton Electronic Dongguan Co Ltd
Priority date: 2004-10-22
Filing date: 2004-10-22
Publication date: 2006-01-04
Anticipated expiration: 2014-10-22

Abstract

The utility model discloses a power supply extension line for built-in electronic security protection, which belongs to the technical field of products of electric appliances. The inner part of a base of a plug of the power supply extension line is provided with a relay and a controller connected with the relay, wherein two switches controlled by the relay are respectively connected between a phase line and a phase line pin and between a zero line and a zero line pin. A socket is provided with a first detection electrode and a second detection electrode, wherein the first detection electrode is electrically connected with the phase line and the second detection electrode is connected with the controller by a sensing line in a cable. When the utility model is used, if the two electrodes are electrically connected by conductive medium (such as water), the current of the phase line emits an electric signal to the controller through the sensing line. The controller controls the relay after the signal is received, and the switch of the relay is switched off. The phase line and the zero line is switched off with the input terminal of a power supply. Contrarily, the switch is switched off. The structure can effectively prevent the dangerous situation of short circuit caused by that the power supply extension line is wet or is watered by rain. The utility model ensures the safety in use.

Description

The power extension line of built-in electronic safeguard protection

Technical field:

The utility model relates to the electric equipment products technical field, refers in particular to a kind of power extension line of built-in electronic safeguard protection.

Background technology:

Often need in daily life at present to use some to be used for the power extension line that power supply is supplied with, for example electric power connection line, power distributor or the like.Common power extension line generally includes one and is used for the plug that is connected with power supply, the socket of conduct output and the cable of attachment plug and socket, this socket comprises one or more sockets usually, be used to connect load, for example household appliances such as the lighting apparatus in the life, wireless device, TV.In the plug pin be provided with usually with power supply in phase line, zero line and the corresponding pin of ground wire, wherein connect when phase line and zero line, circuit forms the loop.For circuit expansion line (as power line, power distributor etc.) can be used safely, people are provided with safety guard therein, and what generally adopt is ground fault circuit interrupter (being called earth leakage protective device usually).The cable rings of this expansion equipment is wound with a screen, and any leakage of current or other faults take place, and ground connection drum barrier circuit interruption device is just made response (cutting off the electricity supply).Present many power extension lines are all directly placed on the ground, as there being moist place such as some similar gardens, bathroom, corner in these places, or be soaked with rain owing to the power extension line is placed on the open air, these all will threaten to user's life, property.And the moisture conditions of present product in can't perception power extension equipment made response timely.

Summary of the invention:

The purpose of this utility model is the deficiency at present product, and a kind of power extension line of built-in electronic safeguard protection is provided.When the power extension line through moisture or rainwater drenches and when the dangerous situation of short circuit occurring, the utility model just can cut off power input, with the safety of guaranteeing to use.

For achieving the above object, the utility model has adopted following technical scheme: it comprises plug, socket and be connected in plug and socket between cable, wherein plug comprises the phase line pin, three pins of zero line pin and earth pin, socket is provided with jack, phase line in the cable, one end of zero line and ground wire is connected to the jack of socket respectively, the controller that in the pedestal of plug, is provided with relay and is connected with relay, wherein relay comprises two switches of its control, and this switch is connected between the phase line other end and the phase line pin and between the zero line other end and the zero line pin; Be formed with a depressed part on the socket, be provided with first exploring electrode and two electrodes of second exploring electrode in this depressed part, wherein first exploring electrode connects on phase line, and a sense line that is arranged in the cable is connected between the controller and second exploring electrode; The other end of the ground wire of cable is connected in the plug on the earth pin.

When using the utility model,, behind water injection depressed part, two electrodes are connected if a kind of conducting medium connects two electrodes.Like this, the electric current of phase line will send a signal of telecommunication to controller by sense line, and controller is received control relay behind the signal, and its switch is disconnected, and phase line, zero line have just disconnected with power input.After conducting medium not being arranged between the electrode, the signal of telecommunication no longer responds, and controller transmits signals to controller.The switch of controller control relay is closed again, makes electric current can flow to socket.After the utility model adopted this structure, it can effectively prevent to be in humidity or rainwater drenches the dangerous situation that short circuit occurs owing to the power extension line, guarantees the safety of using.

Description of drawings:

Fig. 1 is the structural representation of the utility model one embodiment;

Fig. 2 is the front view that plug has pin one end among Fig. 1 embodiment;

Fig. 3 is the front view that socket has jack one end among Fig. 1 embodiment.

Embodiment:

See Fig. 1,2,3, this is a specific embodiment of the present utility model, and it is a power line, and this power line comprises: plug 10, socket 32 and be connected plug 10 and socket 32 between cable 48.Wherein plug 10 has a pedestal 12, and pedestal 12 is provided with phase line pin 16, zero line pin 14 and has the earth pin 18 of curved surface.Phase line pin 16 to meet security regulations, prevents that the user is with plug 10 wrong plug directions less than zero line pin 14 in this plug 10.Also be provided with a relay 20 in the pedestal 12 of plug 10, relay 20 comprises two

switches

22,24 of its control.One controller 30 is connected with relay 20.

Cable 48 comprises phase line 50, zero line 52, ground wire 54 and the sense line 55 of four mutually insulateds.

Socket 32 comprises a pedestal 34, offers three jacks corresponding with general plug (perhaps offering many group jacks, as power distributor) on its end face 36.Wherein jack 38 corresponds to zero line 52, and jack 40 corresponds to phase line 50, jack 42 corresponds to ground wire 54.In each jack, be provided with and electric-conductor, to connect with phase line 50, zero line 52, ground wire 54 respectively.The back of the end face 36 of pedestal 34 is cavity (not shown) of placing the jack electric-conductor.When plug inserted jack, the electric-conductor that the pin of plug just can lead in the jack formed the machinery electrical connection of pegging graft like this.On the end face 36 of socket 32, be formed with a depressed part 56, in this depressed part 56, be provided with first exploring

electrode

60 and 62 two electrodes of second exploring electrode.Two exploring

electrodes

60,62 extend to depressed part 56 places, and this

electrode

60,62 is parallel to each other.Wherein first exploring electrode 60 is connected on the phase line 50 by a wire jumper 58.Sense line 55 in the cable 48 is connected between the controller 30 and second exploring electrode 62.Phase line 50 in the cable 48 is connected on the switch 22 of isopen pin 16 correspondences and between the jack 40.Zero line 52 in the cable 48 is connected between the switch 24 and jack 38 of logical zero line pin 14 correspondences.Ground wire 54 is connected between earth pin 18 and the jack 42.

When a kind of conducting medium, behind water injection depressed part 56, two electrodes are connected.Like this, the electric current on the phase line 50 just sends a signal of telecommunication to controller 30 by sense line 55, and controller 30 is received control relay 20 behind the signal, makes its

switch

22,24 disconnect (as shown in Figure 1).Like this, phase line 50, zero line 52 have just disconnected with power input.After no longer including conducting medium between the

electrode

60,62, the signal of telecommunication no longer responds, and controller 55 transmits signals to controller 30.The

switch

22,24 of controller 30 control relays 20 is closed again, makes electric current can flow to socket 32.

The above only is the utility model preferred embodiment, if the equivalence of doing according to the described structure of the utility model claim, feature and principle changes or modification, all should be included in the utility model claim.

Claims

1, the power extension line of built-in electronic safeguard protection, comprise: plug (10), socket (32) and be connected in plug (10) and socket (32) between cable (48), wherein plug (10) comprises phase line pin (16), (18) three pins of zero line pin (14) and earth pin, socket (32) is provided with jack (40,38,42), phase line (50) in the cable (48), one end of zero line (52) and ground wire (54) is connected to the jack (40 of socket (32) respectively, 38,42), it is characterized in that: the controller (30) that in the pedestal (12) of plug (10), is provided with relay (20) and is connected with relay (20), its repeat circuit (20) comprises two switches (22 of its control, 24), this switch (22,24) be connected between phase line (50) other end and the phase line pin (16) and between zero line (52) other end and the zero line pin (14); Be formed with a depressed part (56) on the socket (32), in this depressed part (56), be provided with first exploring electrode (60) and (62) two electrodes of second exploring electrode, wherein first exploring electrode (60) connects on phase line (50), and a sense line (55) that is arranged in the cable (48) is connected between controller (30) and second exploring electrode (62); The other end of the ground wire (54) of cable (48) is connected on the middle earth pin (18) of plug (10).

2, the power extension line of built-in electronic safeguard protection according to claim 1 is characterized in that: be provided with electric-conductor in each jack (40,38,42), to connect with phase line (50), zero line (52), ground wire (54) respectively.