CN203166238U - Socket for realizing leakage protection - Google Patents

Abstract

The utility model discloses a socket for realizing leakage protection, which comprises a socket base, wherein the base comprises a detection circuit board and a plug wire panel, the detection circuit board is arranged at the lower layer of the socket panel, and the detection circuit board comprises a leakage detection IC, peripheral elements, a self-reset fuse, a leakage tripping control circuit and two groups of mutual inductors; the socket panel comprises a reset device, a test key and one or more groups of jacks, the reset device comprises a spring connecting rod, a buckle piece, a silicon controlled rectifier, an electromagnetic coil, a push rod and an indicator light, and the reset device penetrates through the socket panel and then is connected with the detection circuit board. The leakage protection is between 3mA and 6mA, the precision is greatly improved, the safety range can be completely guaranteed, the tripping response time is not more than 20mS, independent power utilization of multiple electric appliances is met, mutual interference is avoided, circuit faults of a single line do not affect normal use of other circuits, a fault circuit can be effectively identified by one-to-one power utilization, overhaul and maintenance are convenient, use is convenient, and the fault position is clear at a glance.

Description

A socket realizing leakage protection

technical field

The utility model relates to a protection circuit and a socket, in particular to a socket for realizing leakage protection. the

Background technique

Socket refers to the insertable seat of one or more circuit connections, can insert various wiring by it, is convenient to connect with other circuits. The power socket is an electrical device that provides a power interface for household appliances, and it is also an electrical accessory that is used more in residential electrical design. It has a very close relationship with people's lives. The traditional socket is used for connecting multiple electrical appliances, and the leakage protection value is generally 30MA (if the value is too small, the protector will often disconnect if the leakage current of multiple electrical appliances is large, affecting normal power consumption), but the safe leakage current is 6MA Below, traditional protectors cannot effectively protect personal and property safety, and electrocution often occurs. The response time is slow and all power is cut off in the event of a short circuit fault, making it difficult to find out the cause of the fault. Therefore need a kind of socket that can realize electric leakage, short-circuit protection and guarantee one-to-one power consumption to realize safe power consumption. the

Contents of the invention

The purpose of this utility model is to provide a socket that realizes leakage and short circuit protection in view of the deficiencies of the prior art, realizes power on and off control through a control circuit and an induction circuit, and can effectively identify faulty circuits for one-to-one power consumption, which is convenient for maintenance . the

For effectively solving the problems referred to above, the technical scheme that the utility model takes is as follows:

A socket for realizing leakage protection is characterized in that it includes a socket base, the base is composed of a detection circuit board and a socket panel, the detection circuit board is arranged on the lower layer of the socket panel, and the detection circuit board is composed of a leakage detection IC , peripheral components, self-resetting fuse, leakage tripping control circuit and two sets of transformers, the transformers are connected to the leakage detection IC through the peripheral components, the leakage detection IC is connected to the leakage tripping control circuit, and the self-resetting fuse is connected in series The input and output terminals of the detection circuit board; the socket panel includes a reset device arranged side by side, a test button and one or more sets of sockets, and the reset device is composed of a combination of connected and fixed spring connecting rods, buckles, and Composed of silicon controlled silicon, electromagnetic coil, push rod and external indicator light, the spring connecting rod is connected through the buckle to realize fastening and tripping, and the buckle and push rod are horizontally installed on the detection circuit board, and the can The controlled silicon is connected to the electromagnetic coil, and the push rod is installed in the center hole of the electromagnetic coil. The fastening and tripping of the buckle and the spring connecting rod are controlled and connected through the controlled silicon, the electromagnetic coil and the push rod. The reset device passes through the After the socket panel is connected with the detection circuit board. the

In particular, the transformers respectively include live wire-neutral wire transformers and neutral wire-earth wire transformers. the

Specifically, the test button includes a resistor and a test switch, the test switch includes a switch shrapnel, one end of the resistor is connected to the live wire input end, the other end is connected to one end of the switch, and the other end of the switch is connected to the output neutral wire end. the

In particular, the detection circuit board includes a leakage detection circuit and a short circuit detection circuit respectively to realize leakage detection and short circuit detection. the

In particular, the lower end of the reset device includes a fixed piece contact and a moving piece contact arranged symmetrically up and down, and the lower end of the moving piece contact also includes a reset auxiliary spring. the

In particular, a middle cover is included between the detection circuit board and the socket panel, a bottom cover is included at the lower end of the detection circuit board, and the socket is composed of a plurality of socket copper sheets. the

In particular, the spring link includes a reset link and a reset device. the

The socket for realizing leakage protection provided by the utility model mainly has the following advantages:

1. The leakage protection is between 3mA-6mA (this value can be set according to the demand), the accuracy is greatly improved, and it can be guaranteed to be within the safe range;

2. Fast tripping response time (less than 20mS), effectively protecting personal and property safety;

3. Satisfy the independent power consumption of multiple electrical appliances without mutual interference, and the circuit failure of a single line will not affect the normal use of other circuits;

4. One-to-one power consumption can effectively identify the faulty circuit for easy repair and maintenance. It is not only convenient to use but also the fault location is clear at a glance. the

The utility model is described in detail below in conjunction with accompanying drawing. the

Description of drawings

Fig. 1 is the composition and structure diagram of the socket that realizes leakage protection disclosed by the utility model;

Fig. 2 is a schematic diagram of the structure of the socket for realizing leakage protection disclosed by the utility model,

Fig. 3 is another structural schematic diagram of the socket realizing leakage protection disclosed by the utility model;

Fig. 4 is a circuit diagram of a socket for realizing leakage protection disclosed by the utility model. the

in:

1 Socket panel, 2 Reset button, 3 Test button, 4 Socket copper sheet, 5 Trip driving coil, 6 Detection circuit board, 7 Transformer, 8 Reset auxiliary spring, 9 Middle cover, 10 Reset device, 11 Switch shrapnel, 12 Reset connecting rod, 13 bottom covers, 14 moving piece contacts, 15 fixed piece contacts. the

Detailed ways

Example 1:

As shown in Fig. 1, Fig. 2 and Fig. 4, the socket or plugboard (the socket in this embodiment includes the plugboard) provided by this embodiment to realize leakage and short circuit protection includes a socket base, which is composed of leakage, The short-circuit detection circuit board 6 and the socket panel 1 are composed, the leakage and short-circuit detection circuit board 6 is arranged on the lower layer of the socket panel 1, and the leakage and short-circuit detection circuit board 6 is composed of two sets of transformers 7 of live wire-neutral wire and neutral wire-ground wire , special IC for leakage detection, peripheral components, self-resetting fuse, leakage tripping control circuit, the transformer 7 is connected with leakage detection IC through peripheral components, leakage detection IC is connected with leakage tripping control circuit, and self-resetting fuse is connected in series The input and output terminals of the detection circuit board; the socket panel includes reset devices 10, test buttons 3 and one or more groups of sockets arranged side by side, and the reset devices 10 are connected and fixed by a combination of spring connecting rods, Composed of buckle, thyristor, electromagnetic coil, push rod and external indicator light, the spring connecting rod is connected through the buckle to realize fastening and tripping, and the buckle and push rod are horizontally installed on the detection circuit board Above, the thyristor is connected to the electromagnetic coil, and the push rod is installed in the center hole of the electromagnetic coil, and the fastening and tripping of the buckle and the spring connecting rod are controlled and connected through the thyristor, the electromagnetic coil and the push rod. The reset device is connected with the detection circuit board after passing through the socket panel. the

Press the switch key (once), the socket board is energized (the socket works normally), and a socket copper sheet 4 is also set on the socket board. The socket copper sheet 4 is composed of a resistor (15-30KΩ) and a switch, and one end of the resistor is connected to the live wire The other end of the input end is connected to one end of the switch, and the other end of the switch is connected to the output neutral line end. Press the test button to add a tripping leakage current signal to the leakage detection circuit. The tripping push coil 5 detects this signal and sends the thyristor a conduction. When the signal electromagnetic coil is energized, the push rod moves forward, the buckle is pushed away, the reset device trips, and the socket board is powered off. The protection functions of this leakage protection socket include: short circuit, lightning protection, protection of human body from electric shock, fire protection and other functions. This leakage protection socket complies with UL943 and UL498 standards. the

Example 2:

As shown in Fig. 1, Fig. 2 and Fig. 3, the socket for realizing leakage protection disclosed in this implementation includes a socket base, which is composed of a detection circuit board 6 and a socket panel 1, and the detection circuit board 6 is arranged on The lower layer of the socket panel, the detection circuit board 6 is composed of leakage detection IC, peripheral components, self-resetting fuse, leakage tripping control circuit and two groups of transformers 7; the socket panel includes reset device, socket copper sheet 4 and a One or more sets of sockets, the reset device is composed of a reset button 2, a spring connecting rod, a buckle, a silicon controlled rectifier, an electromagnetic coil, a push rod and an indicator light, and the reset device passes through the socket panel and is connected with the detection The circuit board 6 is connected. the

The transformers 7 respectively include a live wire-neutral wire transformer 7 and a neutral wire-earth wire transformer 7 . The socket copper sheet 4 includes a resistor and a test switch. The test switch includes a switch spring 11. One end of the resistor is connected to the live wire input end, the other end is connected to the switch end, and the other end of the switch is connected to the output neutral wire end. The detection circuit board 6 respectively includes a leakage detection circuit and a short circuit detection circuit to realize leakage detection and short circuit detection respectively. The lower end of the reset device 10 includes a reset link 12, and the lower end of the reset link 12 includes a fixed piece contact 15 and a moving piece contact 14 arranged symmetrically up and down, and the lower end of the moving piece contact 14 also includes a reset Auxiliary spring 8. A middle cover 9 is also included between the detection circuit board 6 and the socket panel, a bottom cover 13 is included at the lower end of the detection circuit board 6, and the socket is composed of multiple socket copper sheets. the

The working principle of the socket implementing leakage protection in this embodiment is as follows:

Insert the power cord of the external electrical appliance into the socket, turn on the power and use it. Multiple sockets provide independent shunt circuits for single use without affecting each other. When one of the electrical appliances fails and the power is cut off, the normal use of other sockets will not be affected. Or in order to ensure its safety, the reset button pops up automatically and is disconnected from the main circuit, so as to prevent other connected electrical appliances from receiving interference such as unstable voltage and affecting its function. The induction circuit responds to abnormal voltage or current data, and the control circuit shunts to realize the independent shunt of multiple sockets, and realizes leakage protection by combining with each other. It can not only open and close independently to realize the on-off control of the circuit, but also automatically reset the fuse through the self-recovery safety device. The fuse controls the opening and closing of the circuit to achieve the purpose of safe power consumption. One-to-one power consumption can effectively identify the faulty circuit and facilitate maintenance; the leakage protection is between 3MA-6MA, the accuracy is greatly improved, and the response time does not exceed 0.2S, and the response is fast ;Satisfied with the independent power consumption of multiple electrical appliances without mutual interference, the circuit fault of a single line does not affect the normal use of other circuits, not only easy to use but also the fault location is clear at a glance. the

The utility model is not limited to the above-mentioned embodiments, and all the ways to achieve the purpose of the utility model by adopting structures similar to the utility model are within the scope of protection of the utility model. the

Claims (7)

1. realize earth leakage protective socket for one kind, it is characterized in that, comprise socket base, this pedestal is made up of testing circuit plate and socket panel, described testing circuit plate is arranged on the lower floor of socket panel, described testing circuit plate is by detection of electrical leakage IC, peripheral cell, reset fuse, electric leakage dropout control circuit and two groups of instrument transformers are formed certainly, described instrument transformer is connected with detection of electrical leakage IC through peripheral cell, detection of electrical leakage IC is connected with electric leakage dropout control circuit, and resettable fuse is connected on input and the output of described testing circuit plate; Described socket panel comprises the resetting means of arranging side by side, test button and one or more groups socket, described resetting means is by being connected and fixing spring link, cramp, controllable silicon, solenoid, catch bar and outside indicator light are formed, described spring link passes cramp and connects realization fastening and dropout, described cramp and catch bar level are installed on the testing circuit plate, described controllable silicon connects solenoid, described catch bar is installed in the centre bore of solenoid, controllable silicon is passed through in fastening and the dropout of cramp and spring link, solenoid and catch bar control connection, this resetting means are connected with described testing circuit plate after passing described socket panel.

2. the earth leakage protective socket of realization according to claim 1 is characterized in that, described instrument transformer comprises live wire-zero line instrument transformer and zero line-ground wire instrument transformer respectively.

3. the earth leakage protective socket of realization according to claim 1 is characterized in that, described test button comprises a resistance and a Test Switchboard; this Test Switchboard comprises a switch shrapnel; described resistance one termination live wire input, another termination switch one end, the zero line side of another termination output of switch.

4. the earth leakage protective socket of realization according to claim 1 is characterized in that, described testing circuit plate comprise respectively electric-leakage detection circuit and short-circuit detecting circuit realize respectively the electric leakage and short-circuit detecting.

5. the earth leakage protective socket of realization according to claim 1 is characterized in that, described resetting means lower end comprises stator contact and the moving plate contact that symmetry row up and down puts respectively, and described moving plate contact lower end also comprises the secondary spring that resets.

6. the earth leakage protective socket of realization according to claim 1 is characterized in that, also comprises a middle cover between described testing circuit plate and the socket panel, and testing circuit plate lower end comprises a bottom, and described socket is made up of a plurality of socket copper sheets.

7. the earth leakage protective socket of realization according to claim 1 is characterized in that, described spring link comprises restoring link and resetting means.

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