CN2631069Y

CN2631069Y - Line plug

Info

Publication number: CN2631069Y
Application number: CN 03264355
Authority: CN
Inventors: 唐锡臣
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-20
Filing date: 2003-06-20
Publication date: 2004-08-04
Anticipated expiration: 2013-06-20

Abstract

The utility model discloses a socket which consists of a socket body, an attaching plug, a load jack, a conductor, a circuit breaker and a plurality of protective circuitries. The circuit breaker is connected in series with all of the protective circuitries between the attaching plug and load jack by the conductor. All of the protective circuitries output chopping signal to the circuit breaker. The overvoltage protection circuitry consists of an overcurrent protection circuitry and a leakage current protector or any two kinds of the protection circuitries, which use a public circuit breaker. Compared with prior technique, the utility model is characterized by simple structure, compact circuit structure, cost saving, and small protection part of the socket.

Description

Socket

Technical field

The utility model relates to a kind of socket, particularly a kind of multi-functional socket that has the kinds of protect circuit.

Technical background

When power consumption equipment such as a plurality of instruments, electrical equipment is arranged when a place, just need to use the insert row that a plurality of supply sockets are arranged.When for example microprocessor has display, printer, modulator-demodulator and audio amplifier, the insert row of 5 supply sockets need be arranged.Along with science and technology and expanding economy; people more and more pay attention to Electrical Safety; especially the use of microcomputer, home theater, advanced audio and high-grade household electrical appliance; require insert row that kinds of protect can be provided; personal safety when guaranteeing that the electric leakage of reason such as apparatus insulated damage and the person get an electric shock; electric current is excessive when preventing that short circuit of power consumption equipment power line or load are overweight, makes the overheated fire that causes of power line, prevents the too high damage power consumption equipment of supply voltage.

The multi-functional socket that generally has overvoltage protection, overcurrent protection and creepage protection function is to use respectively independently that overvoltage protector, overcurrent protector (or overload protective device) and earth leakage protective device are assembled in the socket; overvoltage protector is made up of overvoltage crowbar and circuit breaker; the electronic type overcurrent protector is made up of current foldback circuit and circuit breaker, and earth leakage protective device is made up of leakage protection circuit and circuit breaker.The socket of this structure is loosely organized, complicated, and the protection partial volume is big.And the repeating part of circuit is many, has also caused the cost increase.

The utility model content

The purpose of this utility model provide a kind of simple in structure, volume is little, cost is low, multi-functional socket.

In order to solve the problems of the technologies described above; technical solution adopted in the utility model is: a kind of socket; comprise socket body, attaching plug, load jack, lead, a circuit breaker and a plurality of protective circuit; described circuit breaker and all protective circuits are connected in series between attaching plug and the load jack by lead, and each protective circuit is all exported break signal to circuit breaker.

Described a plurality of protective circuit can have three kinds, and they are respectively overvoltage crowbar, current foldback circuit and leakage protection circuit, and wherein leakage protection circuit connects the load jack, and overvoltage crowbar connects circuit breaker, and described circuit breaker connects attaching plug.

Described a plurality of protective circuit can have two kinds, and they are respectively overvoltage crowbar and leakage protection circuit, and wherein leakage protection circuit connects the load jack, and overvoltage crowbar connects circuit breaker, and described circuit breaker connects attaching plug.

Described a plurality of protective circuit can have two kinds, and they are respectively current foldback circuit and leakage protection circuit, and wherein leakage protection circuit connects the load jack, and current foldback circuit connects circuit breaker, and described circuit breaker connects attaching plug.

Described a plurality of protective circuit can have two kinds, and they are respectively overvoltage crowbar and current foldback circuit, and wherein current foldback circuit connects the load jack, and overvoltage crowbar connects circuit breaker, and described circuit breaker connects attaching plug.

Described circuit breaker can be made up of tripping coil TK, dropout K switch 1, K2 and peripheral component thereof, described dropout K switch 1 is series on the live wire of attaching plug, described dropout K switch 2 is series on the zero line of attaching plug, 1 pin of described tripping coil TK connects the live wire of attaching plug, and its 2 pin is by the negative pole introducing break signal of diode D3 in the bridge circuit of being made up of diode D3～D5.

Owing to take technique scheme; the utility model is that circuit breaker of the prior art is separated from overvoltage protector, overcurrent protector and earth leakage protective device; by the public circuit breaker of each protector; original overvoltage, overcurrent and earth leakage protective function have so not only been guaranteed; and simplified circuit with respect to prior art; the volume of the protection part of socket is reduced, reduce cost simultaneously, thereby strengthened the competitiveness of product in market.

Description of drawings

Accompanying drawing 1 is the circuit structure block diagram of first kind of embodiment of the utility model socket;

Accompanying drawing 2 is the circuit structure block diagram of second kind of embodiment of the utility model socket;

Accompanying drawing 3 is the circuit structure block diagram of the third embodiment of the utility model socket;

Accompanying drawing 4 is the circuit structure block diagram of the 4th kind of embodiment of the utility model socket;

Accompanying drawing 5 is the circuit theory diagrams of first kind of embodiment of the utility model socket;

Accompanying drawing 6 is the circuit theory diagrams of second kind of embodiment of the utility model socket.

Embodiment

Socket is described in further detail to the utility model below in conjunction with Figure of description and specific embodiment.

Principle of the present utility model is that circuit breaker of the prior art is separated from overvoltage protector, overcurrent protector and earth leakage protective device, by the public circuit breaker of each protector.Therefore the utility model is made of socket body, attaching plug X, load jack L, lead, a plurality of protective circuit and a circuit breaker 1; described circuit breaker 1 and all protective circuits are electrically connected in series between attaching plug X and load jack L by lead, and each protective circuit is all exported break signal to circuit breaker 1.

With reference to the accompanying drawings 1 and accompanying drawing 5 shown in; among first kind of embodiment of the present utility model; described a plurality of circuit protection module is to be made of overvoltage crowbar 2, current foldback circuit 3 and leakage protection circuit 4; wherein leakage protection circuit 4 connects load jack L; overvoltage crowbar 2 connects circuit breaker 1, and described circuit breaker 1 connects attaching plug X.

Accompanying drawing 5 is depicted as the circuit theory diagrams of accompanying drawing 1.In Fig. 5, form current foldback circuit 3 by operational amplifier N1, diode D7, electrochemical capacitor C1, resistance R 3～R7, coil ZCT1, resistance R 12, diode D9, capacitor C 9 and controllable silicon SCR; Form overvoltage crowbar 2 by operational amplifier N2, capacitor C 2, resistance R 8～R10, resistance R 13, diode D10, capacitor C 9 and controllable silicon SCR; Form leakage protection circuit 4 by integrated circuit N3, resistance R 14～R16, capacitor C 4～C9, diode D11, coil ZCT2 and controllable silicon SCR.Described circuit breaker 1 is made up of tripping coil (TK), dropout switch (K1), (K2) and peripheral component thereof, described dropout switch (K1) is series on the live wire of attaching plug, described dropout switch (K2) is series on the zero line of attaching plug, 1 pin of described tripping coil TK connects the live wire of attaching plug, thereby its 2 pin connects the positive pole introducing break signal of controllable silicon SCR by a bridge circuit of being made up of diode D3～D5.

Load current increase when socket; when overcurrent occurring; current foldback circuit 3 is just exported a high potential; make the controllable silicon SCR triggering and conducting through resistance R 12, diode D9, tripping coil TK has big electric current to flow through, and the iron core in the tripping coil slides; the dropout plate is threaded off; dropout K switch 1 on live wire and the zero line, the moving contact of K2 leave fixed contact simultaneously, cut off the electricity supply, and finish overcurrent protection.When the supply voltage of importing socket is higher than a certain numerical value; when overvoltage occurring; the high potential of overvoltage crowbar output makes the controllable silicon SCR triggering and conducting through R13, D10; tripping coil TK flows through big electric current threads off the dropout plate; the dynamic and static contact separation of dropout K switch 1, K2; cut off the electricity supply, finish overvoltage protection.When the person contacts the live wire electric shock; or electric leakage appears in load; leakage current is during greater than a certain numerical value (for example 10mA); leakage protection circuit is sent a high potential; make the controllable silicon SCR triggering and conducting through diode D11, the big electric current of tripping coil makes the dropout plate thread off the dynamic and static contact separation of dropout K switch 1, K2; cut off the electricity supply, finish earth leakage protective.Can find out that from above-mentioned analysis in Fig. 5 circuit, overcurrent protector, overvoltage protector and earth leakage protective device are made up of current foldback circuit 3, overvoltage crowbar 2 and leakage protection circuit 4 shared release formula circuit breakers 1.Should use in the example, controllable silicon SCR etc. also are public.For avoiding influencing each other between the protective circuit, used the OR circuit of forming by D9, D10, D11.

With reference to the accompanying drawings 2 and accompanying drawing 6 shown in; among second kind of embodiment of the present utility model; described a plurality of protective circuit has two kinds; they are respectively overvoltage crowbar 2 and leakage protection circuit 4; wherein leakage protection circuit 4 connects load jack L; overvoltage crowbar 2 connects circuit breaker 1, and described circuit breaker 1 connects attaching plug X.

Fig. 6 is the application example of Fig. 2.In Fig. 6, overvoltage crowbar 2 is the same with Fig. 5 with leakage protection circuit 4, and this two shared controllable silicon SCR of protective circuit and circuit breaker 1 equally, and circuit breaker 1 is made up of with relevant trip gear tripping coil TK.And overcurrent protection is finished by mechanical type overcurrent protector GI (claiming the overcurrent protection switch, overload protective device).

With reference to the accompanying drawings 3; among the third embodiment of the present utility model; described a plurality of protective circuit has two kinds; they are respectively current foldback circuit 3 and leakage protection circuit 4; wherein leakage protection circuit 4 connects load jack L; current foldback circuit 3 connects circuit breaker 1, and described circuit breaker 1 connects attaching plug X.When overcurrent appearred in the load of socket, the public circuit breaker 1 of electronic type current foldback circuit 3 controls was cut off the electricity supply, and realizes overcurrent protection; When leakage current (being residual current) reaches or during greater than a certain rated value, leakage protection circuit 4 these circuit breakers 1 of control are cut off the electricity supply, and finish earth leakage protective.

With reference to the accompanying drawings 4; among the 4th kind of embodiment of the present utility model; described a plurality of protective circuit has two kinds; they are respectively overvoltage crowbar 2 and current foldback circuit 3; wherein current foldback circuit 3 connects load jack L; overvoltage crowbar 2 connects circuit breaker 1, and described circuit breaker 1 connects attaching plug X.

The circuit breaker that the dropout type circuit breaker that is adopted in the utility model also can adopt relay to form replaces.

Claims

1, a kind of socket; comprise socket body, attaching plug, load jack, lead and a plurality of protective circuit; it is characterized in that: also comprise a circuit breaker; described circuit breaker and all protective circuits are connected in series between attaching plug and the load jack by lead, and each protective circuit is all exported break signal to circuit breaker.

2, socket according to claim 1; it is characterized in that: described a plurality of protective circuits have three kinds; they are respectively overvoltage crowbar, current foldback circuit and leakage protection circuit; wherein leakage protection circuit connects the load jack; overvoltage crowbar connects circuit breaker, and described circuit breaker connects attaching plug.

3, socket according to claim 1; it is characterized in that: described a plurality of protective circuits have two kinds, and they are respectively overvoltage crowbar and leakage protection circuit, and wherein leakage protection circuit connects the load jack; overvoltage crowbar connects circuit breaker, and described circuit breaker connects attaching plug.

4, socket according to claim 1; it is characterized in that: described a plurality of protective circuits have two kinds, and they are respectively current foldback circuit and leakage protection circuit, and wherein leakage protection circuit connects the load jack; current foldback circuit connects circuit breaker, and described circuit breaker connects attaching plug.

5, socket according to claim 1; it is characterized in that: described a plurality of protective circuits have two kinds, and they are respectively overvoltage crowbar and current foldback circuit, and wherein current foldback circuit connects the load jack; overvoltage crowbar connects circuit breaker, and described circuit breaker connects attaching plug.

6, as socket as described in the claim 1,2,3,4 or 5, it is characterized in that: described circuit breaker is made up of tripping coil (TK), dropout switch (K1), (K2) and peripheral component thereof, described dropout switch (K1) is series on the live wire of attaching plug, described dropout switch (K2) is series on the zero line of attaching plug, 1 pin of described tripping coil (TK) connects the live wire of attaching plug, its 2 pin by one by diode (the bridge circuit introducing break signal of D3～D6) forms.