CN220368251U - Simple leakage tripping power plug - Google Patents

Abstract

The utility model relates to the field of leakage tripping switches, in particular to a leakage protector of an electric water heater, wherein a simple leakage tripping power plug comprises an electromagnetic tripping device, a wide voltage relay and a full-bridge rectifier, the electromagnetic tripping device comprises a zero line inserting sheet, a live line inserting sheet, a zero line relay reed, a live line relay reed and a self-locking electromagnet, the zero line inserting sheet and the live line inserting sheet are fixed on an insulating body, the zero line relay reed and the live line relay reed are fixed by a reed fixing body, a push rod at the lower end of the self-locking electromagnet is contacted with two groups of relay reeds, one side of the electromagnetic tripping device is provided with the wide voltage relay, one side of the wide voltage relay is provided with the full-bridge rectifier, and the rear end of the insulating body is provided with a cable wire.

Description

Simple leakage tripping power plug

Technical Field

The utility model relates to the field of leakage tripping switches, in particular to a leakage protector of an electric water heater.

Background

The leakage protector device is used for safety protection in many electric appliances which are directly contacted with a human body and are easy to leak, but the traditional leakage tripping switch or protector needs effective grounding of a ground wire to actively trip, and many household circuits are poor in contact due to lack of maintenance or are not provided with the ground wire due to saving of materials, misoperation is easy to occur when the traditional leakage protection switch is used under the working condition, safety is not guaranteed, the traditional leakage tripping protector is high in cost and selling price due to the fact that the structure is complex, products on the market are usually retail in the range of 20-60 yuan, basic configuration is not carried out in many household appliances due to the fact that the price is too high, only a small amount of electric water heaters or cleaning machines are forced to be adopted, and therefore the household electric appliances are not popularized in life, and many leakage accidents in life are caused by household electric appliances leakage, so that great potential safety hazards are undoubtedly brought to people.

Disclosure of Invention

The utility model provides a simple leakage tripping power plug, which comprises an electromagnetic tripping device, a wide voltage relay and a full-bridge rectifier, wherein the electromagnetic tripping device comprises a zero line inserting sheet, a live line inserting sheet, a zero line relay reed, a live line relay reed and a self-locking electromagnet, the zero line inserting sheet and the live line inserting sheet are fixed on an insulating body, the zero line relay reed and the live line relay reed are fixed by a reed fixing body, a push rod at the lower end of the self-locking electromagnet is contacted with two groups of relay reeds, one side of the electromagnetic tripping device is provided with the wide voltage relay, one side of the wide voltage relay is provided with the full-bridge rectifier, and the rear end of the insulating body is provided with a cable wire.

Drawings

The utility model is explained in further detail below with reference to the drawings.

Figure 1 is a schematic diagram of the overall structure of the device,

figure 2 is a schematic diagram of the internal structure of the device,

figure 3 is a schematic diagram of the self-locking electromagnet structure of the device,

figure 4 is a schematic diagram of the internal structure of the wide voltage relay,

fig. 5 is a schematic circuit diagram of the apparatus.

Detailed Description

Through fig. 1, it can be seen that the outside of this equipment is encapsulated by insulator (1), and insulator's upper end utilizes top cap (2) to seal, is equipped with mounting bolt (3) around the top cap, and the middle part of top cap is equipped with start pin (4), and insulator's lower extreme is equipped with zero line inserted sheet (5) and live wire inserted sheet (6) for be connected with the picture peg, insulator's rear end is equipped with cable conductor (7) for transmitting the electric energy.

As can be seen from fig. 2, the inside of the device is composed of an electromagnetic tripping device, a wide voltage relay (8) and a full-bridge rectifier (9), the tripping device is composed of a self-locking electromagnet (10), a zero line relay reed (11), a live wire relay reed (12), a zero line inserting piece (5) and a live wire inserting piece (6), the zero line inserting piece (5) and the live wire inserting piece (6) are fixed on an insulating body (1), the upper ends of the two groups of inserting pieces are provided with the zero line relay reed (11) and the live wire relay reed (12), the two groups of relay reeds and the two groups of inserting pieces are kept in a separated state, the rear ends of the two groups of reeds are fixed by a reed fixing body (13), the self-locking electromagnet (10) is arranged on an electromagnet mounting plate (14), the lower end of the self-locking electromagnet is provided with a push rod (15), the lower end of the push rod is contacted with the middle parts of the zero line relay reed (11) and the live line relay reed (12), after the self-locking electromagnet is attracted, the two groups of relay reeds can be pressed down to be contacted with the two groups of inserting sheets at the lower end, otherwise, the two groups of relay reeds are disconnected, the upper end of the self-locking electromagnet is provided with a permanent magnet sheet (16), the upper end of the permanent magnet sheet is provided with a starting pin (4), when the starting pin is manually pressed down, the permanent magnet sheet can be pushed to descend to be attracted with an iron core inside the electromagnet, so that the push rod (15) is pushed to conduct a power supply, when the self-locking electromagnet is electrified, an internal coil can generate magnetism at the same level as the permanent magnet sheet (16), according to the principle that the same poles of the magnets repel each other, a permanent magnet iron sheet can be separated from an iron core under the repulsive force, so that a power supply passage of a relay reed and an inserting sheet is disconnected, one side of an electromagnet mounting plate (14) is provided with a wide voltage relay (8), a movable iron core and a fixed iron core in the wide voltage relay are kept in a separated state, magnetism can be generated after a magnetic induction coil is electrified, the two can be attracted, so that current is transmitted, a full-bridge rectifier (9) is arranged in an insulating body and used for rectifying an alternating current power supply into a direct current power supply, a cable wire (7) is arranged at the rear end of the insulating body, the cable wire consists of a zero line lead (19), a live wire lead (20) and a ground wire lead (21), the zero line lead (19) is connected with a zero line relay reed (11) at the upper end of a reed fixing body (13), the live wire lead (20) is connected with a live wire relay reed (12), the ground wire lead (21) is connected with a positive electrode input end of a magnetic induction coil of the wide voltage relay (8), an alternating current input end of the full-bridge rectifier (9) is connected with a zero line lead relay (11) and a positive electrode end of the electromagnet, the positive electrode of the electromagnet is controlled by utilizing the positive electrode lead (25) of the wide voltage relay (13), the negative electrode output end of the full bridge rectifier is respectively connected with the negative electrode input ends of the self-locking electromagnet (10) and the wide voltage relay (8) magnetic induction coil by utilizing two groups of direct current negative electrode wires (24), when the device works, the other end of a cable (7) is connected with the positive electrode and the negative electrode of the relay device and the ground wire, a zero line inserting piece (5) and a live wire inserting piece (6) are inserted into an inserting plate, a starting pin (4) is manually pressed down, at the moment, a permanent magnet iron sheet (16) is descended to be attracted with an iron core in the self-locking electromagnet, a push rod (15) at the lower end of the self-locking electromagnet is used for pressing down the zero line relay reed (11) and the live wire relay reed (12) to be contacted with the zero line inserting piece, at the moment, a current channel is conducted to be used for transmitting current, when the relay device at the rear end leaks electricity to lead a shell or a water body to be electrified, the leaked current can be transmitted to the wide voltage relay (8) through the ground wire (21) and then is in a loop with the negative electrode of the full bridge rectifier, so that the coil of the wide voltage relay generates magnetism to attract the inner movable iron core and the fixed iron core, at the moment, the permanent magnet iron sheet is attracted by the coil, the permanent magnet iron sheet (16) is attracted by the positive electrode inserting piece and the self-locking electromagnet, the self-locking electromagnet is separated from the positive electrode reed (11) by the self-locking electromagnet and the self-locking electromagnet (12) by the self-locking electromagnet, and the self-locking electromagnet is separated from the positive electrode reed (11) by the self-locking electromagnet, at the moment, and the self-locking electromagnet is separated from the positive electrode reed (11) and the self-locking electromagnet, thereby realizing the purpose of tripping, the periphery of the upper end inside the insulating body is provided with bolt holes (26) for installing a top cover.

As can be seen from fig. 3, the outside of the self-locking electromagnet is provided with a coil winding body (27), a coil (28) is wound on the coil winding body, the upper end surface of the coil winding body is provided with a mounting panel (29), two ends of the mounting panel are provided with mounting holes (30), the middle part of the coil winding body is provided with an iron core (31), the middle part of the iron core is provided with an iron core square hole (32), a plastic push-pull rod (33) is arranged in the iron core square hole, the lower end of the plastic push-pull rod is connected with a push rod (15), a permanent magnet piece (16) is arranged at the upper end of the plastic push-pull rod, a starting pin (4) is formed after the upper end of the plastic push-pull rod extends out of the permanent magnet piece, a spring hole (34) is formed at the upper end of the iron core square hole, a spring (35) is arranged between the spring hole and the permanent magnet piece and is used for applying upward thrust to the permanent magnet piece and the plastic push rod, two ends of the coil are connected with the outside by utilizing a self-locking electromagnet positive power wire (25) and a direct current negative wire (24), the self-locking electromagnet is manually pressed downwards, at the moment, the permanent magnet piece (16) and the permanent magnet piece (31) is sucked and locked with the iron core (31), the upper end is mounted, the permanent magnet piece (16) is electrically, the permanent magnet piece and the permanent magnet piece (31) is automatically separated from the permanent magnet piece after the permanent magnet piece is electrically, and the homopolar and the permanent magnet piece is automatically released from the permanent magnet piece.

As can be seen from fig. 4, the inside of the wide voltage relay is provided with a magnetic induction coil (36), the center part of the magnetic induction coil is provided with a coil middle hole (37), the outside of the magnetic induction coil is provided with a non-magnetic metal frame (38), the two side ends of the non-magnetic metal frame are provided with two groups of shaft holes (39), a supporting rotating shaft (40) is arranged between the two groups of shaft holes, a fixed iron core (41) and a movable iron core (42) are arranged in the coil middle hole (37), the outer diameter of the fixed iron core is the same as the inner diameter of the coil middle hole, the two groups of fixed iron cores (42) are tightly fixed with each other, the outer diameter of the movable iron core is lower than the inner diameter of the coil middle hole (37), the fixed iron core and the movable iron core are kept in a separated state during standby, the fixed iron core and the movable iron core keep a distance of 1 to 3 mm, the middle part of the supporting rotating shaft (40) is provided with a connecting rod (43) and a balancing body (44), the other end of the connecting rod is connected with the movable iron core (42), the movable iron core, the connecting rod, the balancing body and the supporting rotating shaft form an integral structure, the movable iron core can freely swing in the coil middle hole by the supporting action of the two groups of the shaft, the two groups of the shaft holes, the balancing body (44) is used for exerting a slight elastic force to act on the fixed iron core (42) and the fixed iron core and the movable iron core, and the movable iron core and the magnetic iron core and the balancing body always keep a slight magnetic iron core in a magnetic equilibrium state, after the magnetic iron core is kept between the fixed iron core and the magnetic iron core and the balancing body, and the magnetic iron core and the balancing body is kept in a state, and a slight magnetic equilibrium state between the magnetic iron core and a state, the non-magnetic conductive metal frame is connected with a direct current positive electrode lead (23), the fixed iron core (41) is connected with a positive electrode lead (25) of a self-locking electromagnet, two ends of the magnetic induction coil (36) are respectively connected with a direct current negative electrode lead (24) and a ground wire lead (21), a power supply input by the direct current positive electrode lead (23) is conducted to the movable iron core (42) after being supported by a rotating shaft and a connecting rod, when the ground wire lead (21) is electrified, current and the direct current negative electrode of the full-bridge rectifier generate a loop and generate magnetism in the magnetic induction coil, thereby the movable iron core and the fixed iron core are attracted, the direct current positive electrode lead is input into a power supply passage of the positive electrode lead of the self-locking electromagnet to be conducted, the magnetic induction coil is made of a material with better electric conductivity, the wire diameter of the magnetic induction coil is thinner, and therefore the characteristic of low-current starting can be realized, the rated withstand voltage value of the magnetic induction coil is 110V to 180V, so that the voltage input from the ground wire is higher than 36V, magnetism can be generated in the magnetic induction coil, the distance between the movable iron core and the fixed iron core is only 1 to 3 mm, and the movable iron core and the fixed iron core are fixed by adopting a supporting rotating shaft with a lower friction coefficient, so that the movable iron core and the fixed iron core can be attracted and conducted by extremely weak magnetism, when the voltage input from the ground wire is close to 220V, the two groups of iron cores are attracted, the self-locking electromagnet can act instantly to disconnect a circuit, the working reaction time is about 0.1 second, and the magnetic induction coil can bear instant high voltage in the extremely short time and cannot burn the same, so that the equipment can meet the characteristic of wide-voltage starting in a large range.

As can be seen from fig. 5, the zero line wire (19) of the cable (7) is connected with the zero line relay reed (11), the live wire (20) is connected with the live wire relay reed (12), the ground wire (21) is connected with the positive electrode input end of the wide voltage relay (8), the alternating current input electrode of the full bridge rectifier (9) is respectively connected with the zero line relay reed (11) and the live wire relay reed (12) by using the full bridge alternating current input wire (22), the direct current positive electrode output end of the full bridge rectifier is connected with the control input end of the wide voltage relay (8) by using the direct current positive electrode wire (23), the control output end of the wide voltage relay is connected with the positive electrode input end on the self-locking relay (10) by using the self-locking electromagnet positive electrode wire (25), and the negative electrode output end of the full bridge rectifier is respectively connected with the self-locking electromagnet (10) and the negative electrode input end of the wide voltage relay (8) by using the two groups of direct current negative electrode wires (24).

When the device is used, the other end of a cable wire (7) is respectively connected with a zero line, a live wire and a ground wire of the electrical equipment, a zero line inserting sheet and a live wire inserting sheet of the device are connected with an inserting plate, two groups of relay reeds inside the device are manually pressed down to be in contact with the two groups of inserting sheets at the moment, electric energy can be transmitted, when a load relay is electrified due to an electric leakage accident, a shell or a water body is electrified, a leaked high-voltage power source can be transmitted to a wide voltage relay (8) through a ground wire lead (21) and then is in loop with the negative pole of a full-bridge rectifier (9), magnetism is generated in an internal coil, so that a movable iron core and a fixed iron core inside the wide voltage relay are attracted, at the moment, a power supply channel of a self-locking electromagnet positive electrode lead (25) is input by a direct current positive electrode lead (23) is conducted, the self-locking electromagnet generates magnetism with the same polarity to force the permanent magnet piece (16) to be separated from the iron core, and the zero line relay reed (11) and the live wire relay reed (12) move upwards under the action of self elasticity to be separated from the two groups of the permanent magnet piece, and the power source is triggered to be disconnected, and thus the function of the loop is realized.

The equipment utilizes the ground wire to monitor the areas such as the outer shell and the water body of the electrical equipment in real time, when the electrical equipment suffers from leakage faults, the ground wire is electrified, the voltage input by the ground wire and the full-bridge rectifier generate a loop so as to force the equipment to trip, therefore, the whole system can automatically operate without the intervention of the ground wire, the defect that the traditional equipment needs the effective grounding of the ground wire to actively trip is avoided, and the whole equipment is internally provided with only a self-locking electromagnet, a wide voltage relay and the full-bridge rectifier and belongs to durable long-life elements, so that the parameters such as the fault rate, the manufacturing cost and the volume are far lower than those of the traditional equipment relying on complex electronic element circuit boards, the equipment can be produced and applied in a large scale, the working mode of the ground wire intervention is not needed, and the equipment is more suitable for being used for mobile electrical appliances or old houses.

While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims (7)

1. The simple leakage tripping power plug comprises an electromagnetic tripping device, a wide voltage relay (8) and a full-bridge rectifier (9), and is characterized in that; the electromagnetic tripping device comprises a zero line inserting sheet (5), a live line inserting sheet (6), a zero line relay reed (11), a live line relay reed (12) and a self-locking electromagnet (10), wherein the zero line inserting sheet and the live line inserting sheet are fixed on an insulating body (1), the zero line relay reed (11) and the live line relay reed (12) are fixed by using a reed fixing body (13), a push rod (15) at the lower end of the self-locking electromagnet (10) is in contact with two groups of relay reeds, one side of the electromagnetic tripping device is provided with a wide voltage relay (8), one side of the wide voltage relay is provided with a full-bridge rectifier (9), and the rear end of the insulating body is provided with a cable (7).

2. A simplified earth leakage tripping power plug as defined in claim 1, wherein; the circuit connection mode of the equipment is as follows; the zero line lead (19) inside the cable (7) is connected with the zero line relay reed (11), the live wire lead (20) is connected with the live wire relay reed (12), the ground wire lead (21) is connected with the positive input end of the magnetic induction coil of the wide voltage relay (8), the alternating current input end of the full-bridge rectifier (9) is connected with the zero line relay reed (11) and the live wire relay reed (12) through two groups of full-bridge alternating current input wires (22), the positive output end of the full-bridge rectifier is connected with the control input end of the wide voltage relay through the direct current positive lead (23), the control output end of the wide voltage relay is connected with the positive input end of the self-locking electromagnet (10) through the positive lead (25) of the self-locking electromagnet, and the negative output end of the full-bridge rectifier is connected with the negative input end of the magnetic induction coil of the wide voltage relay (8) through two groups of direct current negative leads (24) respectively.

3. A simplified earth leakage tripping power plug as defined in claim 1, wherein; the outside of auto-lock electro-magnet (10) is equipped with coil winding body (27), the winding has coil (28) on the coil winding body, the upper end surface formation installation panel (29) of coil winding body, the both ends of installation panel are equipped with mounting hole (30), the middle part of coil winding body is equipped with iron core (31), the middle part of iron core is equipped with iron core square hole (32), install plastics push-and-pull rod (33) in the iron core square hole, push rod (15) are connected to the lower extreme of plastics push-and-pull rod, permanent magnet piece (16) are installed to the upper end of plastics push-and-pull rod, form behind the permanent magnet piece and start up round pin (4) are extended to the upper end of plastics push-and-pull rod, the upper end in iron core square hole is equipped with spring hole (34), spring (35) set up between spring hole and permanent magnet piece, auto-lock electro-magnet positive wire (25) and direct current negative pole wire (24) are connected respectively to the both ends of coil.

4. A simplified earth leakage tripping power plug as defined in claim 1, wherein; the inside of wide voltage relay (8) is equipped with magnetic induction coil (36), the central part of magnetic induction coil is equipped with coil mesopore (37), the outside of magnetic induction coil is equipped with non-magnetic conduction metal frame (38), the both sides end of non-magnetic conduction metal frame is equipped with two sets of shaft holes (39), install between two sets of shaft holes and support pivot (40), install in coil mesopore (37) and decide iron core (41) and move iron core (42), it fixes to decide iron core and coil mesopore, move iron core (42) and can freely swing in the coil mesopore, the middle part of supporting pivot (40) is equipped with connecting rod (43) and balancing body (44), the other end and the moving iron core (42) of connecting rod are connected, revolving spring (45) are installed between balancing body and non-magnetic conduction metal frame, be connected with direct current positive lead (23) on the non-magnetic conduction metal frame, connect on deciding iron core (41) from locking electromagnet positive lead (25), direct current negative lead (24) and ground wire (21) are connected respectively at the both ends of magnetic induction coil (36).

5. A simplified earth leakage tripping power plug as defined in claim 1, wherein; the tripping starting mode of the simple leakage tripping power plug is ground wire loop current triggering.

6. A simplified earth leakage tripping power plug as defined in claim 1, wherein; the working mode of the self-locking electromagnet (10) is self-locking.

7. A simplified earth leakage tripping power plug as defined in claim 1, wherein; the triggering characteristic of the wide voltage relay (8) is wide voltage triggering.