CN211479969U - Integral type permanent magnetism earth-leakage protector - Google Patents

Abstract

The utility model discloses an integral type permanent magnetism earth-leakage protector relates to electrical equipment protection technical field, include: the protector device, the pins, the bottom plate and the elastic sheet; the protector device comprises a maintaining tripping device, a communicating device and a locking device; the locking device comprises a spring plate pressing block and a locking deflector rod; the locking deflector rod is provided with a lock catch, a magnetic suction plate and a hasp slideway; the elastic piece pressing block is provided with a pressing rod, a hasp and a vertical fork groove; the communicating device is provided with a second iron core which extends transversely and is matched with the vertical fork groove in a clamping manner; the maintaining tripping device is provided with a permanent magnet core which is longitudinally fixed, the permanent magnet core is in adsorption fit with the magnetic attraction plate, and the elastic piece pressing block comprises an upper pressing block part and a lower pressing block part; the utility model can maintain the on-state of the earth leakage protector without long-term power-on through the arrangement of the permanent magnet core, thereby improving the safety in the use process; through the arrangement of the magnetic suction plate, the service life of the leakage protector is greatly prolonged.

Description

Integral type permanent magnetism earth-leakage protector

Technical Field

The utility model belongs to the technical field of the electrical equipment protection technique and specifically relates to an integral type permanent magnetism earth-leakage protector.

Background

When the equipment has leakage fault or needs to protect the person with fatal danger from electric shock, the leakage protector can disconnect the main circuit in time, thereby being widely applied; the application technology of the leakage protector is mature, and the leakage protector is divided into a voltage type and a current type according to the protection principle. From the mechanical structure, there are self-locking type and attraction type, but the current or voltage mechanical self-locking type leakage protector is mainly used. The biggest characteristic of the mechanical self-locking structure is as follows: when the power supply of the working leakage protector is interrupted or the power supply loop is in phase failure and the line is in poor contact, the mechanical self-locking structure of the leakage protector in a closed state can not actively disconnect the closed contact, and at the moment, if the power supply loop is in abnormal phase failure and the ground wire is in abnormal electrification or leaks electricity, the leakage protector loses the protection effect, so that safety accidents are caused; to the problem the utility model discloses in, designed a from release type mechanical structure, adopted the coil to last power supply actuation release mechanism, when meeting power interruption, bad contact, lack mutually, this mechanical structure actuation keeps the return circuit because of losing unable magnetic attraction self-release mechanism that produces of voltage, leads to the disconnection of release circuit, thereby closed contact disconnection forms active protection, stops the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

The utility model discloses to the above-mentioned defect that prior art exists, provide an integral type permanent magnetism earth-leakage protector specially, solve current earth-leakage protector and need the problem that the earth-leakage protector on-state just can be maintained to long-term circular telegram.

Second, technical scheme

In order to solve the technical problem, the utility model provides an integral type permanent magnetism earth-leakage protector, include: the protector device is arranged at the upper part of the bottom plate, the protector device controls the disconnection and the closing of the leakage protector, and the pins are arranged at the lower part of the bottom plate;

the protector device comprises a maintaining tripping device, a communicating device and a locking device, wherein the locking device is arranged between the maintaining tripping device and the communicating device and is used for controlling the opening and closing of the elastic sheet and the pin;

the locking device comprises a spring plate pressing block and a locking deflector rod, the locking deflector rod is movably hinged with a second support arranged on the communicating device through a second pin shaft, and the spring plate pressing block is movably hinged with a first support arranged in the middle of the bottom plate through a first pin shaft; the locking deflector rod is provided with a lock catch, a magnetic suction plate and a hasp slideway;

the spring plate pressing block is provided with a hasp, a vertical fork groove and a pressing rod, and the hasp is used for being matched and abutted with the hasp;

the communicating device is provided with a second iron core which extends transversely and is matched with the vertical fork groove in a clamping manner; the maintaining tripping device comprises a permanent magnet core which is longitudinally arranged and can be used for magnetic adsorption matching with the magnetic attraction plate; the maintaining tripping device also comprises a tripping coil, the tripping coil is fixed in the maintaining tripping device, and the permanent magnet core is vertically fixed in the inner cavity of the tripping coil; one end of the permanent magnet core is fixedly connected with the bottom of the maintaining and tripping device, and the other end of the permanent magnet core is used for adsorbing the magnetic suction plate;

when the power supply is switched on, the second iron core drives the elastic sheet pressing block to rotate through the vertical fork groove, so that the pressing rod positioned at the bottom of the elastic sheet pressing block presses the elastic sheet downwards, the hasp slides upwards along the hasp slide way, the magnetic attraction plate continuously moves downwards in the process that the hasp slides to be abutted against the hasp, and the magnetic attraction plate is fixed through the permanent magnet core in an adsorption mode; the maintaining tripping device is used for fixing the position of the locking deflector rod, so that the elastic sheet pressing block keeps a pressing-down state, and the elastic sheet and the pin keep a connection state, thereby realizing circuit communication;

when the power supply is disconnected, the magnetic field generated by the tripping coil is offset with the magnetic field of the permanent magnet core, so that the locking deflector rod is released, the lock catch and the hasp are tripped, the elastic sheet and the pin are disconnected, and the circuit is further broken.

The elastic sheet comprises a first elastic sheet, a second elastic sheet and a PE wire elastic sheet, the first elastic sheet and the second elastic sheet are fixed through elastic sheet clamping grooves arranged on two sides of the maintaining tripping device, and the PE wire elastic sheet penetrates through the bottom of the maintaining tripping device and is clamped and fixed with the maintaining tripping device through a bottom plate;

the top of the pin is provided with an electric connection contact point, the end parts of the first elastic sheet, the second elastic sheet and the PE wire elastic sheet are provided with elastic sheet contacts corresponding to the electric connection contact point, when the elastic sheet is pressed down by the pressing rod, the elastic sheet contacts are contacted with the electric connection contact point, and the elastic sheet contacts on the first elastic sheet, the second elastic sheet and the PE wire elastic sheet can be disconnected with the electric connection contact point.

The bottom parts of the maintaining tripping device and the communicating device are provided with wedge-shaped buckling feet, and the maintaining tripping device and the communicating device are respectively buckled and fixed with the bottom plate through the buckling feet.

Wherein, the intercommunication device still includes intercommunication coil and intercommunication spring, and the intercommunication coil is fixed inside the intercommunication device, and intercommunication spring and second iron core level set up at the intercommunication coil inner chamber.

Wherein, still be equipped with on the locking driving lever and compress tightly the kicking block, compress tightly the kicking block and be located hasp one side, when switch on, the second iron core drives the shell fragment briquetting rotatory through erecting the fork groove, and the hasp upwards slides along the hasp slide to the hasp slides and is compressing tightly the instantaneous butt of kicking block behind the hasp, thereby it is fixed by the permanent magnet core absorption through making magnetism inhale the board downstream with compressing tightly the kicking block butt.

The locking driving lever is provided with an indicating block, the indicating block is positioned on the upper portion of the locking driving lever, when the power supply is switched on, the indicating block moves into the observation window of the protector shell, when the power supply is switched off, the indicating block moves out of the observation window of the protector shell, and the color of the indicating block is red.

The locking driving lever is provided with a first support, the locking driving lever is provided with a second support, the first support is provided with a first limiting baffle, the second support is provided with a second limiting baffle, and the first limiting baffle is connected with the second support.

The elastic sheet comprises a first elastic sheet and a second elastic sheet, and the first elastic sheet and the second elastic sheet are fixed through elastic sheet clamping grooves arranged at two sides of the maintaining tripping device;

the top of the pin is provided with an electric connection contact point, the end parts of the first elastic sheet and the second elastic sheet are provided with elastic sheet contacts corresponding to the electric connection contact point, and when the elastic sheet is pressed down by the pressing rod, the elastic sheet contacts are contacted with the electric connection contact point; the elastic sheet contacts on the first elastic sheet and the second elastic sheet can be disconnected with the electric connection contacts, and the PE wire can not be disconnected and keeps connected.

The position of the pressing rod, corresponding to the PE wire elastic sheet, is provided with a lug, and when the pressing rod is pressed down, the lug enables the PE wire elastic sheet to be communicated with the pin before the first elastic sheet and the second elastic sheet; when the pressure lever is lifted, the lug ensures that the PE wire elastic sheet is disconnected with the pin after the first elastic sheet and the second elastic sheet.

Wherein, still be equipped with the clamp plate pinhole on the locking driving lever, magnetism is inhaled the board and is articulated through round pin axle and clamp plate pinhole cooperation.

Third, beneficial effect

Compared with the prior art, the integral permanent magnet leakage protector provided by the utility model can maintain the on-state of the leakage protector without long-term power-on through the arrangement of the permanent magnet core, thereby greatly improving the safety in the use process; meanwhile, the leakage protector has stronger reliability and further enhances the safety performance through the design of the hasp slide way;

the hasp can push the magnetic suction plate to rotate for a certain angle through the arrangement of the compression top block, so that the permanent magnet core can more easily adsorb the magnetic suction plate;

furthermore, the limitation of the rotation angle range of the locking deflector rod is realized through the limiting action of the limiting baffle; and the design of the magnetic attraction plate greatly prolongs the service life of the leakage protector.

Drawings

Fig. 1 is an explosion diagram of the integrated permanent magnet leakage protector of the present invention;

fig. 2 is a perspective view of the integrated permanent magnet leakage protector of the present invention;

FIG. 3 is a power off state structure diagram of the integrated permanent magnet leakage protector of the present invention;

FIG. 4 is a power-on structure diagram of the integrated permanent-magnet leakage protector of the present invention;

FIG. 5 is a structural diagram of a locking device of the integrated permanent magnet leakage protector of the present invention;

FIG. 6 is a structure diagram of a locking deflector rod of the integrated permanent-magnet leakage protector;

fig. 7 is a structure diagram of the embodiment 2 of the integrated permanent-magnet leakage protector of the utility model;

in the figure: 1 is a protector shell; 2 is a protector device; 3 is a pin; 4 is a bottom plate; 5 is a spring plate; 6 is a maintaining trip device; 7 is a communicating device; 8 is a locking device; 8a is a spring plate pressing block; 8b is a locking deflector rod; 10 is a fastening pin; 11 is a limit baffle; 15 is an observation window; 16 is an electrical connection contact; 21 is a first pin shaft; 22 is a pressure lever; 23 is a vertical fork groove; 24 is a hasp; 31 is a second pin; 33 is a lock catch; 34 is a magnetic attraction plate; 35 is a pressing top block; 36 is a hasp slideway; 41 is a bump; 42 is an indication block; 43 is a first support; 51 is a spring contact; 52 is a first elastic sheet; 53 is a second elastic sheet; 54 is PE line spring plate; 55 is a spring plate clamping groove; a trip coil 61; 62 is a permanent magnet core; 63 is a press plate pin hole; a second support 64; 71 is a communicating coil; 72 is a second iron core; and 73 is a communication spring.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example 1:

the utility model discloses an integral type permanent magnetism earth-leakage protector, as shown in fig. 1 and fig. 2, include: the protector comprises a protector shell 1, a protector device 2, pins 3, a bottom plate 4 and elastic pieces 5, wherein the protector device 2 is arranged on the upper portion of the bottom plate 4, the protector device 2 controls the opening and closing of a leakage protector, and the pins 3 are arranged on the lower portion of the bottom plate 4;

the protector device 2 comprises a maintaining tripping device 6, a communicating device 7 and a locking device 8, wherein the locking device 8 is arranged between the maintaining tripping device 6 and the communicating device 7 and is used for controlling the opening and closing of the elastic sheet 5 and the pin 3;

the locking device 8 comprises a spring plate pressing block 8a and a locking shifting rod 8b, the locking shifting rod 8b is movably hinged with a second support 64 arranged on the communicating device 7 through a second pin shaft 31, and the spring plate pressing block 8a is movably hinged with a first support 43 arranged in the middle of the bottom plate 4 through a first pin shaft 21; the locking deflector rod 8b is provided with a lock catch 33, a magnetic attraction plate 34 and a hasp slide way 36; the spring plate pressing block 8a is provided with a hasp 24, a vertical fork groove 23 and a pressure lever 22, and the hasp 24 is used for being matched and abutted with the lock catch 33; the positions of the first support 43 and the second support 64 can be adjusted according to different requirements of customers;

a second iron core 72 which extends transversely is arranged on the communicating device 7, and the second iron core 72 is in clamping fit with the vertical fork groove 23; the maintenance tripping device 6 is provided with a permanent magnet core 62 which is longitudinally arranged, the permanent magnet core 62 is fixed on the maintenance tripping device 6, and the permanent magnet core 62 is in adsorption fit with the magnetic suction plate 34; the maintaining tripping device 6 further comprises a tripping coil 61, the tripping coil 61 is fixed in the maintaining tripping device 6, and the permanent magnet core 62 is vertically fixed in the inner cavity of the tripping coil 61; one end of the permanent magnet core 62 is fixedly connected with the bottom of the maintaining tripping device 6, and the other end of the permanent magnet core 62 is used for adsorbing the magnetic absorption plate 34;

as shown in fig. 1 and 5, when the buckle 24 slides along the buckle slide way 36 counterclockwise, the locking shift lever 8b can continuously rotate clockwise, so as to avoid the occurrence of the conditions that the magnetic attraction plate 34 stops or jumps and the like in the process that the buckle 24 slides along the buckle slide way 36 counterclockwise, because the speed of the magnetic attraction plate 34 and the permanent magnet core 62 for adsorption and fixation is influenced by the stop or jump, and the communication failure of the earth leakage protector is caused by too low speed;

as shown in fig. 1 and 4, when the power is turned on, the second iron core 72 drives the spring plate pressing block 8a to rotate through the vertical fork groove 23, so that the pressing rod 22 at the bottom of the spring plate pressing block 8a presses the spring plate 5 downwards, the hasp 24 slides upwards along the hasp slide way 36, and the magnetic attraction plate 34 is driven to continuously move downwards in the process that the hasp 24 slides to abut against the hasp 33; the permanent magnet core 62 is used for adsorbing and fixing the magnetic absorption plate 34, the release device 6 is maintained to fix the position of the locking deflector rod 8b, so that the elastic sheet pressing block 8a keeps a pressing state, the elastic sheet 5 and the pin 3 keep a closed state, and further circuit communication is realized;

as shown in fig. 1 and 3, when the power supply is turned off, the magnetic field generated by the trip coil 61 and the magnetic field of the permanent magnet core 62 are offset, so that the locking shift lever 8b is released, the latch 33 is tripped from the buckle 24, so that the elastic piece 5 and the pin 3 are disconnected, and the circuit is disconnected, specifically, when the power supply is turned off, the energy storage capacitor discharges electricity to the trip coil 61, the magnetic field generated by the trip coil 61 and the magnetic field of the permanent magnet core 62 are offset, that is, the cylindrical permanent magnet core 62 does not generate the magnetic force for attracting the magnetic attraction plate 34.

As shown in fig. 1 and 2, the locking shift lever 8b is further provided with an indication block 42, the indication block 42 is located at the upper part of the locking shift lever 8b, when the power supply is switched on, the indication block 42 moves into the observation window 15 of the protector housing 1, when the power supply is switched off, the indication block 42 moves out of the observation window 15 of the protector housing 1, and the working state of the earth leakage protector can be well indicated through the indication block 42; the color of the indicating block 42 is red, so that the indicating block is more striking and has a good reminding function.

As shown in fig. 1, the elastic sheet 5 includes a first elastic sheet 52, a second elastic sheet 53 and a PE wire elastic sheet 54, the first elastic sheet 52 and the second elastic sheet 53 are fixed by elastic sheet slots 55 disposed at two sides of the trip device 6, and the PE wire elastic sheet 54 passes through the bottom of the trip device 6 and is clamped and fixed by the bottom plate 4 and the trip device 6; the three pins 3 of the zero line, the live line and the PE line are arranged corresponding to the elastic piece 5, the top of each pin 3 is provided with an electric connection contact point 16, the tail end of each elastic piece 5 is provided with an elastic piece contact 51 corresponding to the electric connection contact point 16, and when the elastic piece 5 is pressed down by the pressing rod 22, the elastic piece contact 51 is in contact with the electric connection contact point 16, so that the stability of circuit connection can be well guaranteed, and the problem of circuit connection in the using process is avoided; during the use process, the shrapnel contact 51 on the PE wire shrapnel 54 can be disconnected with the electric connection contact 16 on the pin 3 connected with the PE wire;

the first elastic piece 52 is a live wire elastic piece, the second elastic piece 53 is a neutral wire elastic piece, and the PE wire elastic piece 54 is a ground wire elastic piece.

As shown in fig. 1, the bottoms of the maintaining tripping device 6 and the communicating device 7 are both provided with a wedge-shaped fastening pin 10, and the maintaining tripping device 6 and the communicating device 7 are respectively fastened and fixed with the bottom plate 4 through the fastening pin 10; the installation is simple and convenient, and firm reliable, can directly utilize the mould die sinking, reduction in production cost.

As shown in fig. 1, the communication device 7 further includes a communication coil 71 and a communication spring 73, the communication coil 71 is fixed inside the communication device 7, the communication spring 73 and the second iron core 72 are sequentially and horizontally arranged in an inner cavity of the communication coil 71, when the power supply is turned off, the elastic force of the communication spring 73 pushes out the second iron core 72 and enables the elastic piece pressing block 8a to rotate clockwise, and at this time, the elastic force of the elastic piece 5 also enables the elastic piece pressing block 8a to rotate clockwise, so that the pressing rod 22 is lifted and the elastic piece 5 is released; when the power is switched on, the communicating coil 71 is electrified, so that the second iron core 72 is clamped with the vertical fork groove 23 to drive the spring plate pressing block 8a to rotate anticlockwise.

As shown in fig. 5, a bump 41 is further disposed on the pressing rod 22 corresponding to the location where the PE wire spring 54 is pressed, that is, the bump 41 on the pressing rod 22 directly contacts the PE wire spring 54, when the pressing rod 22 is pressed, the bump 41 makes the PE wire spring 54 connect with the pin 3 before the first spring 52 and the second spring 53; when the pressing rod 22 is lifted, the bump 41 disconnects the PE wire spring 54 from the pin 3 after the first spring 52 and the second spring 53, specifically, when the power is turned on, the PE wire spring 54 is first connected to the pin 3, then the first spring 52 and the second spring 53 are connected to the pin 3, and when the power is turned off, the first spring 52 and the second spring 53 are first disconnected from the pin 3, and then the PE wire spring 54 is disconnected from the pin 3.

When the elastic piece 5 is pressed down, the bump 41 at the top of the PE wire elastic piece 54 contacts the PE wire elastic piece 54 first, so that the elastic piece contact 51 on the PE wire elastic piece 54 contacts the electrical connection contact 16 on the pin 3 connected to the PE wire first, and then the elastic piece contact 51 of the live wire elastic piece and the elastic piece contact 51 of the neutral wire elastic piece contact the electrical connection contact 16 on the pin 3, so that in the process of circuit connection, the ground wire is in contact connection first, and the zero live wire is in contact connection again.

When the shrapnel 5 is reset to move upwards, the shrapnel contact 51 of the live wire shrapnel and the shrapnel contact 51 of the zero wire shrapnel are separated from the electric connection contact 16 on the pin 3, then the shrapnel contact 51 on the PE wire shrapnel 54 is separated from the electric connection contact 16 on the pin 3 connected with the PE wire, so that the live wire and the zero wire are separated firstly, and the ground wire is separated again in the power-off work.

Example 2:

as shown in fig. 7, compared to embodiment 1, the elastic piece 5 includes a first elastic piece 52 and a second elastic piece 53, and the first elastic piece 52 and the second elastic piece 53 are fixed by elastic piece clamping grooves 55 disposed at two sides of the retaining trip device 6; the top of the pin 3 is provided with an electric connection contact point 16, the end parts of the first elastic sheet 52 and the second elastic sheet 53 are provided with elastic sheet contacts 51 corresponding to the electric connection contact point 16, and when the pressing rod 22 presses the elastic sheet 5 down, the elastic sheet contacts 51 are contacted with the electric connection contact point 16; in this embodiment, the first elastic piece 52 and the second elastic piece 53 correspond to the live pin and the neutral pin, respectively, the PE line cannot be disconnected, and in this embodiment, the PE line elastic piece 54 is removed, and the PE line pin is connected to the PE line through a wire, so that the PE line is kept in a continuous connection state.

Example 3:

as shown in fig. 5 and fig. 6, compared with embodiment 1, the locking shift lever 8b is further provided with a pressing top block 35, the pressing top block 35 is located on one side of the lock catch 33, when the power is turned on, the second iron core 72 drives the spring plate pressing block 8a to rotate through the vertical fork groove 23, the buckle 24 slides upwards along the buckle slide way 36, the buckle 24 slides through the lock catch 33 and then instantly abuts against the pressing top block 35, and the magnetic attraction plate 34 moves downwards to the lowest position through abutting against the pressing top block 35; namely through the setting that compresses tightly kicking block 35 for hasp 24 can push magnetic attraction board 34 and additionally rotate certain angle, thereby make magnetic attraction board 34 can move to the lowest position, when switch on, second iron core 72 retracts and to draw the position of rotatory maximum angle with shell fragment briquetting 8a in the twinkling of an eye, hasp 24 passes through hasp slide 36 and hasp 33 in proper order this moment, take place the butt with compressing tightly kicking block 35 at last, thereby make hasp 24 can push magnetic attraction board 34 and additionally rotate certain angle and move to the lowest position after, can guarantee that permanent magnet core 62 adsorbs magnetic attraction board 34 under trip coil 61's effect.

Example 4:

as shown in fig. 1 and 5, compared with embodiment 1, the locking shift lever 8b is further provided with a limit baffle 11, the limit baffle 11 is disposed at an end of the locking shift lever 8b and located above the second support 64, when the power supply is turned off, the limit baffle 11 can abut against the second support 64 to limit the rotation angle of the locking shift lever 8b, that is, the limit baffle 11 abuts against the top surface of one side of the second support 64, so that after the power supply is turned off, the locking shift lever 8b can only rotate around the second pin 31 within a limited range, and the influence on other parts is prevented.

Example 5:

still be equipped with clamp plate pinhole 63 on locking driving lever 8b in embodiment 5, clamp plate pinhole 63 is located locking driving lever 8b upper portion, magnetism is inhaled board 34 and is articulated through round pin axle and clamp plate pinhole 63 cooperation, magnetism is inhaled board 34 promptly and is in the activity articulated state with locking driving lever 8b, magnetism is inhaled board 34 and can be rotated around the round pin axle in the certain limit, can guarantee that magnetism inhales board 34 and can have the biggest area of contact when adsorbing the contact with permanent magnet core 62, guarantee great adsorption affinity, the effectual life who improves earth-leakage protector.

The utility model discloses an integral type permanent magnetism earth-leakage protector, in the in-service use process, in the circuit that inserts this earth-leakage protector required protection, when the power switch-on, intercommunication coil 71 in the intercommunication device 7 circular telegram, the second iron core 72 returns and contracts, because the second iron core 72 is connected with the vertical fork groove 23 joint on the shell fragment briquetting 8a, thereby make the second iron core 72 return and drive shell fragment briquetting 8a rotatory when contracting, the depression bar 22 that is located the bottom of shell fragment briquetting 8a pushes down shell fragment 5, make electric connection contact 16 and shell fragment contact 51 contact, form the route, make hasp 24 and hasp 33 form the butt simultaneously, permanent magnet core 62 adsorbs and fixes magnetism suction plate 34 this moment, make magnetism suction plate 34 be in the state of being pushed down all the time, thereby make earth-leakage protector maintain the circuit intercommunication; when the circuit is communicated, the red indicating block 42 on the locking deflector rod 8b moves to the position right below the observation window 15, so that the indicating effect is achieved; when the circuit needing protection meets the conditions of electric leakage or power failure and the like, the electricity is discharged to the trip coil 61 through the energy storage capacitor, the magnetic field generated by the trip coil 61 is offset with the magnetic field of the permanent magnet core 62, the magnetic attraction plate 34 loses the downward adsorption acting force of the permanent magnet core 62, the hasp 24 is tripped with the lock catch 33, and the elastic piece pressing block 8a does not press the elastic piece 5 down, so that the disconnection of the leakage protector plays a role in protection.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides an integral type permanent magnetism earth-leakage protector which characterized in that, integral type permanent magnetism earth-leakage protector includes: the integrated permanent-magnet leakage protector comprises a protector device (2), pins (3), a bottom plate (4) and elastic pieces (5), wherein the protector device (2) is arranged on the upper portion of the bottom plate (4), the protector device (2) controls the integrated permanent-magnet leakage protector to be opened and closed, and the pins (3) are arranged on the lower portion of the bottom plate (4);

the protector device (2) comprises a maintaining tripping device (6), a communicating device (7) and a locking device (8), wherein the locking device (8) is arranged between the maintaining tripping device (6) and the communicating device (7) and is used for controlling the opening and closing of the elastic sheet (5) and the pin (3);

the locking device (8) comprises an elastic piece pressing block (8a) and a locking shifting rod (8b), the locking shifting rod (8b) is movably hinged with a second support (64) arranged on the communicating device (7) through a second pin shaft (31), and the elastic piece pressing block (8a) is movably hinged with a first support (43) arranged in the middle of the bottom plate (4) through a first pin shaft (21); the locking deflector rod (8b) is provided with a lock catch (33), a magnetic attraction plate (34) and a hasp slide way (36);

the spring plate pressing block (8a) is provided with a hasp (24), a vertical fork groove (23) and a pressing rod (22), and the hasp (24) is used for being matched and abutted with the lock catch (33);

a second iron core (72) extending transversely is arranged on the communication device (7), and the second iron core (72) is in clamping fit with the vertical fork groove (23); the maintenance tripping device (6) comprises a permanent magnet core (62) which is longitudinally arranged, and the permanent magnet core (62) can be used for being in magnetic adsorption fit with the magnetic suction plate (34); the maintaining tripping device (6) further comprises a tripping coil (61), the tripping coil (61) is fixed inside the maintaining tripping device (6), and the permanent magnet core (62) is vertically fixed in the inner cavity of the tripping coil (61); one end of the permanent magnet core (62) is fixedly connected with the bottom of the maintaining tripping device (6), and the other end of the permanent magnet core (62) is used for adsorbing the magnetic suction plate (34);

when the power supply is switched on, the second iron core (72) drives the elastic sheet pressing block (8a) to rotate through the vertical fork groove (23), so that the pressing rod (22) positioned at the bottom of the elastic sheet pressing block (8a) presses the elastic sheet (5) downwards, meanwhile, the hasp (24) slides upwards along the hasp slide way (36), and in the process that the hasp (24) slides to be abutted against the hasp (33), the magnetic suction plate (34) continuously moves downwards, and the magnetic suction plate (34) is adsorbed and fixed through the permanent magnet core (62); the maintaining tripping device (6) is used for fixing the position of the locking deflector rod (8b), so that the elastic sheet pressing block (8a) keeps a pressing state, and the elastic sheet (5) and the pin (3) keep a connection state, thereby realizing circuit communication;

when the power supply is disconnected, the magnetic field generated by the tripping coil (61) is counteracted with the magnetic field of the permanent magnet core (62), so that the locking deflector rod (8b) is released, the lock catch (33) is tripped with the hasp (24), the elastic sheet (5) is disconnected with the plug pin (3), and further the circuit is disconnected.

2. The integrated permanent-magnet leakage protector according to claim 1, wherein the elastic sheet (5) comprises a first elastic sheet (52), a second elastic sheet (53) and a PE wire elastic sheet (54), the first elastic sheet (52) and the second elastic sheet (53) are fixed by elastic sheet clamping grooves (55) arranged at two sides of the maintaining trip device (6), and the PE wire elastic sheet (54) passes through the bottom of the maintaining trip device (6) and is clamped and fixed by the bottom plate (4) and the maintaining trip device (6);

the top of the pin (3) is provided with an electric connection contact point (16), the end parts of the first elastic sheet (52), the second elastic sheet (53) and the PE wire elastic sheet (54) are provided with elastic sheet contacts (51) corresponding to the electric connection contact point (16), when the pressing rod (22) presses down the elastic sheet (5), the elastic sheet contacts (51) are in contact with the electric connection contact point (16), and the elastic sheet contacts (51) on the first elastic sheet (52), the second elastic sheet (53) and the PE wire elastic sheet (54) can be disconnected from the electric connection contact point (16).

3. The integrated permanent-magnet earth leakage protector according to claim 1, characterized in that the bottom of the maintaining trip unit (6) and the bottom of the communicating unit (7) are provided with wedge-shaped fastening pins (10), and the maintaining trip unit (6) and the communicating unit (7) are fastened and fixed with the bottom plate (4) through the fastening pins (10), respectively.

4. The integrated permanent-magnet earth leakage protector according to claim 1, characterized in that the communication device (7) further comprises a communication coil (71) and a communication spring (73), the communication coil (71) is fixed inside the communication device (7), and the communication spring (73) and the second iron core (72) are horizontally arranged in the inner cavity of the communication coil (71).

5. The integrated permanent-magnet leakage protector according to claim 1, wherein a pressing top block (35) is further arranged on the locking deflector rod (8b), the pressing top block (35) is located on one side of the lock catch (33), when a power supply is switched on, the second iron core (72) drives the spring plate pressing block (8a) to rotate through the vertical fork groove (23), the hasp (24) slides upwards along the hasp slide way (36), the hasp (24) slides through the lock catch (33) and then is instantly abutted against the pressing top block (35), and the magnetic suction plate (34) moves downwards through abutting against the pressing top block (35) so as to be adsorbed and fixed by the permanent magnet core (62).

6. The integrated permanent-magnet earth leakage protector according to claim 1, wherein the locking shift lever (8b) is further provided with an indication block (42), the indication block (42) is located at the upper part of the locking shift lever (8b), when the power supply is switched on, the indication block (42) moves into the observation window (15) of the protector shell (1), when the power supply is switched off, the indication block (42) moves out of the observation window (15) of the protector shell (1), and the color of the indication block (42) is red.

7. The integrated permanent-magnet earth leakage protector according to claim 1, wherein a limit baffle (11) is further disposed on the locking deflector (8b), the limit baffle (11) is disposed at an end of the locking deflector (8b) and located at an upper portion of the second support (64), and when the power is turned off, the limit baffle (11) can abut against the second support (64) to limit a rotation angle of the locking deflector (8 b).

8. The integrated permanent-magnet leakage protector according to claim 1, wherein the spring plate (5) comprises a first spring plate (52) and a second spring plate (53), and the first spring plate (52) and the second spring plate (53) are fixed by spring plate clamping grooves (55) arranged at two sides of the maintaining tripping device (6);

the top of the pin (3) is provided with an electric connection contact point (16), the end parts of the first elastic sheet (52) and the second elastic sheet (53) are provided with elastic sheet contacts (51) corresponding to the electric connection contact point (16), and when the pressing rod (22) presses down the elastic sheet (5), the elastic sheet contacts (51) are contacted with the electric connection contact point (16); the elastic sheet contacts (51) on the first elastic sheet (52) and the second elastic sheet (53) can be disconnected with the electric connection contact points (16), and the PE wire can not be disconnected and keeps connected.

9. The integrated permanent-magnet leakage protector according to claim 2, wherein a protrusion (41) is disposed on the pressing rod (22) corresponding to the PE wire spring (54), and when the pressing rod (22) is pressed down, the protrusion (41) makes the PE wire spring (54) connect with the pin (3) before the first spring (52) and the second spring (53); when the pressure lever (22) is lifted, the lug (41) enables the PE wire elastic sheet (54) to be disconnected from the pin (3) after the first elastic sheet (52) and the second elastic sheet (53).

10. The integrated permanent-magnet leakage protector according to claim 5, wherein the locking deflector rod (8b) is further provided with a pressing plate pin hole (63), and the magnetic attraction plate (34) is hinged with the pressing plate pin hole (63) in a matching manner through a pin shaft.

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