CN116206931A - Silent leakage protector - Google Patents

Abstract

The utility model discloses a mute leakage protector, which relates to the technical field of protection of electrical equipment, and comprises the following components: the leakage protection device comprises a leakage protection device, pins, a base and an elastic sheet; the leakage protection device comprises a communication maintaining device, a communication device and a locking device; the locking device comprises an elastic piece pressing block and a locking deflector rod; the locking deflector rod is provided with a lock catch, a cross fork groove and a hasp slideway; the spring plate pressing block is provided with a pressing rod, a hasp and a vertical fork groove; the communication device is provided with a second iron core which transversely extends out and is in clamping fit with the vertical fork groove; the communication maintaining device is provided with a first iron core which is longitudinally fixed, the first iron core is in clamping fit with the cross fork groove, and the elastic piece pressing block comprises a pressing block upper part and a pressing block lower part; according to the utility model, the first iron core is matched with the cross fork groove in a clamping way to enable the leakage protector to maintain a circuit communication state, and through the design, the instant of entering the maintenance state of the leakage protector in the background art can be effectively eliminated, and the iron core adsorbs the click sound of the movable pressing plate to maintain a good mute state.

Description

Silent leakage protector

Technical Field

The utility model relates to the technical field of electrical equipment protection, in particular to a mute leakage protector.

Background

The leakage protector can timely disconnect the main circuit when equipment has leakage faults or needs to protect life electric shock with fatal danger, so that the leakage protector is widely applied; the utility model designs a self-releasing mechanical structure, which adopts a coil to continuously supply power to attract and release a mechanism, when the power is interrupted, the contact is bad and the phase is lost, the attraction and the maintenance loop of the mechanical structure cannot generate magnetic attraction to self-release the mechanism due to the loss of voltage, so that the release loop is opened, and the closed contact is opened to form active protection, thereby avoiding potential safety hazard.

The utility model discloses a long-life earth leakage protector as disclosed in Chinese patent No. 211907362U, which relates to the technical field of electric equipment protection and comprises: the device comprises a protector device, pins, a bottom plate and an elastic sheet; the protector device comprises a communication maintaining device, a communication device and a locking device; the locking device comprises an elastic piece pressing block and a locking deflector rod; the locking deflector rod is provided with a lock catch, a movable pressing plate and a lock catch slideway; the spring plate pressing block is provided with a pressing rod, a hasp and a vertical fork groove; the communication device is provided with a second iron core which transversely extends out and is in clamping fit with the vertical fork groove; the communication maintaining device is provided with a first iron core which is longitudinally fixed, the first iron core is in adsorption fit with the movable pressing plate, and the elastic piece pressing block comprises a pressing block upper part and a pressing block lower part; the leakage protector with the structure adopts a state that the iron core adsorbs the movable pressing plate to realize that the leakage protector maintains circuit connection; however, when the leakage protector with the structure enters a maintenance state, the iron core adsorbs the movable pressing plate to generate obvious clicking sound, and the silencing effect is poor.

Disclosure of Invention

1. Technical problem to be solved

The utility model aims at the defects existing in the prior art, and particularly provides a mute electric leakage protector, which solves the problem that the existing electric leakage protector can be disconnected only under the condition of electrifying and also solves the problems that the existing electric leakage protector can generate obvious click sound and has poor mute effect.

2. Technical proposal

In order to solve the above technical problems, the present utility model provides a mute leakage protector, comprising: the leakage protection device is arranged at the upper part of the base, can control the opening and closing of the mute leakage protector, and is also provided with a pin which can be electrically connected with the elastic sheet;

the leakage protection device comprises a communication maintaining device, a communication device and a locking device, wherein the locking device is arranged between the communication maintaining device and the communication 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 communication 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 base through a first pin shaft; the locking deflector rod is provided with a lock catch, a cross fork groove and a hasp slideway;

the spring plate pressing block comprises a pressing block upper part and a pressing block lower part, a hasp and a vertical fork groove are arranged on the pressing block upper part, a pressing rod is arranged on the pressing block lower part, the pressing block upper part is hinged with the pressing block lower part through a first pin shaft, a pressing block spring in a compressed state is arranged between the pressing block upper part and the pressing block lower part, when the pressing rod is in an abutting state with the spring plate, the elastic force of the pressing block spring can enable the pressing rod to keep stable acting force on the spring plate, and the hasp is used for being matched and abutted with the hasp;

the communication device is provided with a second iron core which transversely extends out and is in clamping fit with the vertical fork groove; the communication maintaining device comprises a first iron core which is longitudinally arranged and can be used for being clamped and matched with the cross fork groove;

when the power is on, the second iron core drives the spring plate pressing block to rotate through the vertical fork groove, so that a pressing rod positioned at the bottom of the spring plate pressing block presses down the spring plate, meanwhile, the hasp slides upwards along the hasp slideway, and in the process that the hasp slides to be in abutting connection with the hasp, the horizontal fork groove continuously moves downwards, and the horizontal fork groove is tensioned and fixed through the first iron core; the locking deflector rod is fixed in position, meanwhile, the spring plate pressing block is kept in a pressing state, and at the moment, the spring plate and the pins are kept in a connection state, so that circuit communication is realized;

when the power supply is disconnected, the communication maintaining device stops working, the locking deflector rod is released, and the lock catch are tripped, so that the elastic sheet is disconnected with the pin, and further circuit breaking is realized.

The elastic pieces comprise a first elastic piece, a second elastic piece and PE wire elastic pieces, wherein the first elastic piece and the second elastic piece are fixed through elastic piece clamping grooves arranged on two sides of the communication maintaining device, and the PE wire elastic pieces penetrate through the bottom of the communication maintaining device and are clamped and fixed with the communication maintaining device through the base;

the pin top is equipped with the electric connection contact, and first shell fragment, second shell fragment and PE line shell fragment tip all are equipped with the shell fragment contact corresponding with the electric connection contact, and when the depression bar pressed the shell fragment, the shell fragment contact contacted with the electric connection contact, and the shell fragment contact on first shell fragment, second shell fragment and the PE line shell fragment can be disconnected with the electric connection contact.

The hinge seat is arranged at the hinge position of the upper part of the pressing block and the lower part of the pressing block, the first pin shaft penetrates through the hinge seat, the hinge seat is further provided with a limit stop, and the limit stop is used for controlling the opening angle between the upper part of the pressing block and the lower part of the pressing block when the first pin shaft is used as the axis for rotation.

The communication device further comprises a communication coil and a communication spring, wherein the communication coil is fixed inside the communication device, and the communication spring and the second iron core are horizontally arranged in the inner cavity of the communication coil;

the communication maintaining device further comprises a maintaining coil, the maintaining coil is fixed inside the communication maintaining device, and the first iron core is vertically fixed in an inner cavity of the maintaining coil.

The second pin shaft comprises a sleeve part and a rotation shaft center, the sleeve part is arranged on the locking deflector rod, the rotation shaft center is arranged on the second support, the sleeve part is sleeved outside the rotation shaft center, and the locking deflector rod can rotate around the rotation shaft center through the sleeve part.

The hinge seat is provided with a pre-hinge device, and the pre-hinge device comprises a boss and a clamping groove;

when the boss is positioned at the hinge position of the upper part of the pressing block, the clamping groove is positioned at the hinge position of the lower part of the pressing block, and the pre-hinge of the upper part of the pressing block and the lower part of the pressing block is realized through the cooperation of the boss and the clamping groove;

when the clamping groove is positioned at the hinge part of the upper part of the pressing block, the boss is positioned at the hinge part of the lower part of the pressing block, and the pre-hinge of the upper part of the pressing block and the lower part of the pressing block is realized through the cooperation of the boss and the clamping groove.

The locking deflector rod is further provided with a pressing ejector block, the pressing ejector block is located on one side of the lock catch, when the power supply is connected, the second iron core drives the elastic sheet pressing block to rotate through the vertical fork groove, the lock catch upwards slides along the lock catch slideway, the lock catch slides to be in instantaneous butt with the pressing ejector block after passing through the lock catch, and the horizontal fork groove moves downwards to be tensioned and fixed by the first iron core through butt joint with the pressing ejector block.

And when the power supply is disconnected, the limiting baffle can be abutted with the second support so as to limit the rotation angle of the locking deflector rod.

The elastic pieces comprise a first elastic piece and a second elastic piece, and the first elastic piece and the second elastic piece are fixed through elastic piece clamping grooves arranged on two sides of the communication maintaining device;

the top of the pin is provided with an electric connection contact, the ends of the first elastic piece and the second elastic piece are provided with elastic piece contacts corresponding to the electric connection contact, and when the elastic piece is pressed down by the compression bar, the elastic piece contacts are contacted with the electric connection contact; the spring contact points on the first spring plate and the second spring plate can be disconnected with the electric connection contact point, and the PE wire cannot be disconnected and kept connected.

The convex blocks are arranged on the pressure bar at the positions corresponding to the PE wire elastic pieces, and when the pressure bar is pressed down, the convex blocks enable the PE wire elastic pieces to be communicated with the pins before the first elastic pieces and the second elastic pieces; when the pressure lever is lifted, the convex block enables the PE wire elastic sheet to be disconnected with the pin after the first elastic sheet and the second elastic sheet.

3. Advantageous effects

Compared with the prior art, the mute electric leakage protector provided by the utility model can break the circuit through the matching relation between mechanical structures under the condition of maintaining the failure of the coil, so that the safety in the use process is greatly improved; meanwhile, the design of the hasp slideway and the spring ensures that the mute electric leakage protector has stronger reliability and further enhances the safety performance;

the elastic sheet pressing block is formed by combining the upper part of the pressing block and the lower part of the pressing block in a pressing spring connection mode, so that the pressing of the elastic sheet pressing block to the elastic sheet is not performed only by virtue of a fixed limiting mechanical structure in the pressing of the elastic sheet, the pressing rod at the lower part of the pressing block can apply stable pressing force to the elastic sheet by adopting the pressing spring, and after mechanical abrasion is generated due to long-time use in the follow-up process, the opening angle between the upper part of the pressing block and the lower part of the pressing block when the first pin shaft is used as an axis is enlarged by the elastic force of the pressing spring, so that the pressing force of the pressing rod at the lower part of the pressing block to the elastic sheet is ensured, and the electric connection in the mute leakage protector is stable and reliable; through the arrangement of the pressing top block, the hasp can push the transverse fork groove to rotate for a certain angle additionally, so that the first iron core is easier to adsorb the transverse fork groove;

in addition, the first iron core and the cross fork groove are matched in a clamping way, so that the leakage protector is in a circuit communication state, and through the design, the instant that the leakage protector enters a maintenance state in the background art can be effectively eliminated, and the iron core adsorbs the click sound of the movable pressing plate, so that a good mute state is maintained.

Drawings

FIG. 1 is an exploded view of a silent earth leakage protector of the present utility model;

FIG. 2 is a perspective view of the silent earth leakage protector of the present utility model;

FIG. 3 is a block diagram of the power off state of the silent earth leakage protector of the present utility model;

FIG. 4 is a block diagram of the power on state of the silent earth leakage protector of the present utility model;

FIG. 5 is a block diagram of a locking mechanism of the silent earth leakage protector of the present utility model;

FIG. 6 is a block diagram of a locking lever of the silent earth leakage protector of the present utility model;

FIG. 7 is a diagram of a spring plate press block structure of the mute earth leakage protector of the present utility model in FIG. 1;

FIG. 8 is a diagram of a spring plate press block of the mute earth leakage protector of the present utility model in FIG. 2;

FIG. 9 is a block diagram of an embodiment 2 of a silent earth leakage protector according to the present utility model;

in the figure: 1 is a protector shell; 2 is a leakage protection device; 3 is a pin; 4 is a base; 5 is an elastic sheet; 6 is a communication maintaining device; 7 is a communication device; 8 is a locking device; 8a is an elastic sheet pressing block; 8b is a locking deflector rod; 8c is the upper part of the pressing block; 8d is the lower part of the pressing block; 9 is a pressing block spring; 10 is a buckle leg; 11 is a limit baffle; 12 is a limit stop; 13 is a boss; 14 is a clamping groove; 15 is an observation window; 16 are electrical connection contacts; 21 is a first pin; 22 is a compression bar; 23 is a vertical fork groove; 24 is a hasp; 31 is a second pin; 33 is a lock catch; 34 is a cross slot; 35 is a compression 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 spring; 53 is a second spring; 54 is a PE wire spring sheet; 55 is a spring clip slot; 61 is a sustain coil; 62 is a first core; 64 is a second support; 71 is a communication coil; 72 is a second core; and 73 is a communication spring.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

Example 1:

a mute leakage protector according to an embodiment of the present utility model, as shown in FIG. 1 and FIG. 2, includes: the leakage protector comprises a protector shell 1, a leakage protector 2, pins 3, a base 4 and an elastic sheet 5, wherein the leakage protector 2 is arranged at the upper part of the base 4, the leakage protector 2 controls the opening and closing of a mute leakage protector, and the pins 3 are arranged at the lower part of the base 4;

the leakage protection device 2 comprises a communication maintaining device 6, a communication device 7 and a locking device 8, wherein the locking device 8 is arranged between the communication maintaining device 6 and the communication 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 deflector rod 8b, the locking deflector rod 8b is movably hinged with a second support 64 arranged on the communication 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 base 4 through a first pin shaft 21; the locking deflector rod 8b is provided with a lock catch 33, a cross fork groove 34 and a hasp slideway 36; the spring plate pressing block 8a comprises a pressing block upper part 8c and a pressing block lower part 8d, a hasp 24 and a vertical fork groove 23 are arranged on the pressing block upper part 8c, a pressing rod 22 is arranged on the pressing block lower part 8d, the pressing block upper part 8c is hinged with the pressing block lower part 8d through a first pin shaft 21, a pressing block spring 9 in a compressed state is arranged between the pressing block upper part 8c and the pressing block lower part 8d, when the pressing rod 22 is in an abutting state with the spring plate 5, the elastic force of the pressing block spring 9 can enable the pressing rod 22 to keep stable acting force on the spring plate 5, and the hasp 24 is used for being matched and abutted with the hasp 33; the positions of the first support 43 and the second support 64 can be adjusted according to different requirements of customers;

as shown in fig. 6, 7 and 8, hinge seats are respectively arranged at the hinge positions of the upper part and the lower part of the pressing block, and a first pin shaft 21 penetrates through the hinge seats, so that the upper part and the lower part of the pressing block can rotate around the first pin shaft 21, a limit stop 12 is further arranged on the hinge seats, and the limit stop 12 is used for controlling the opening angle between the upper part 8c and the lower part 8d of the pressing block when the first pin shaft 21 is used as the axis, namely the rotation angle of the upper part 8c and the lower part 8d of the pressing block around the first pin shaft 21 is within a certain range, and meanwhile, the design can ensure that the elastic sheet pressing block 8a can not be automatically disassembled after being assembled due to the elastic force action of the pressing block spring 9 after the assembly is completed, namely the upper part 8c and the lower part 8d of the pressing block can be limited;

the spring grooves are formed in the positions, corresponding to the pressing block springs 9, of the upper part and the lower part of the pressing block, and are used for installing the pressing block springs 9, meanwhile, the pressing block springs can be prevented from falling off, the installation is simpler and more convenient, the spring columns are further arranged in the spring grooves and are used for installing the pressing block springs 9, the pressing block springs 9 are sleeved on the spring columns, and the installation and fixing effects are enhanced;

a second iron core 72 which transversely extends out is arranged on the communication device 7, and the second iron core 72 is in clamping fit with the vertical fork groove 23; the communication maintaining device 6 is provided with a first iron core 62 which is longitudinally arranged, the first iron core 62 is fixed on the communication maintaining device 6, and the first iron core 62 is in clamping fit with the cross fork groove 34;

as shown in fig. 1 and fig. 5, when the hasp 24 slides anticlockwise along the hasp slideway 36, the locking deflector rod 8b can continuously rotate clockwise, so that the situations that the cross fork groove 34 stops or jumps in the anticlockwise sliding process of the hasp 24 along the hasp slideway 36 are avoided, and the communication failure of the leakage protector can be caused because the stop or jump affects the adsorption fixing speed of the cross fork groove 34 and the first iron core 62;

as shown in fig. 1 and fig. 4, when the power is turned on, the second iron core 72 drives the spring pressing block 8a to rotate through the vertical fork groove 23, so that the pressing rod 22 positioned at the bottom of the spring pressing block 8a presses down the spring 5, and meanwhile, the hasp 24 slides upwards along the hasp slideway 36, and in the process that the hasp 24 slides to be abutted with the hasp 33, the horizontal fork groove 34 drives to continuously move downwards; the cross fork groove 34 is fixed at the lowest position through the first iron core 62, and the communication maintaining device 6 is used for fixing the locking deflector rod 8b in position, so that the spring piece pressing block 8a is kept in a pressed state, the spring piece 5 and the pin 3 are kept in a closed state, and further circuit communication is realized;

as shown in fig. 1 and 3, when the power is disconnected, the communication maintaining device 6 stops working, the locking deflector rod 8b is released, and the lock catch 33 and the lock catch 24 are tripped, so that the spring plate 5 is disconnected from the pin 3, and the circuit breaking is realized.

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

As shown in fig. 1, the elastic piece 5 includes a first elastic piece 52, a second elastic piece 53 and a PE wire elastic piece 54, where 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 communication maintaining device 6, and the PE wire elastic piece 54 passes through the bottom of the communication maintaining device 6 and is clamped and fixed by the base 4 and the communication maintaining device 6; three pins 3 of a zero line, a fire line and a PE line are arranged corresponding to the spring 5, an electric connection contact 16 is arranged at the top of each pin 3, a spring contact 51 corresponding to the electric connection contact 16 is arranged at the tail end of the spring 5, and when the spring 5 is pressed down by the compression bar 22, the spring contact 51 is contacted with the electric connection contact 16, so that the stability of circuit connection can be well ensured, and the problem of circuit connection in the use process is avoided; in the use process, the spring contact 51 on the PE wire spring 54 can be disconnected with the electric connection contact 16 on the pin 3 connected with the PE wire;

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

As shown in fig. 1, wedge-shaped buckling legs 10 are arranged at the bottoms of the communication maintaining device 6 and the communication device 7, and the communication maintaining device 6 and the communication device 7 are respectively buckled and fixed with the base 4 through the buckling legs 10; the installation is simple and convenient, firm and reliable, the die can be directly utilized for die sinking, and the production cost is reduced.

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 the inner cavity of the communication coil 71, when the power is disconnected, the elastic force of the communication spring 73 ejects the second iron core 72 and makes the elastic piece pressing block 8a rotate clockwise, at this time, the elastic force of the elastic piece 5 also makes the elastic piece pressing block 8a rotate clockwise, and then the compression bar 22 lifts up and releases the elastic piece 5; when the power is turned on, the communication coil 71 is energized, so that the second iron core 72 drives the spring piece pressing block 8a to rotate counterclockwise through the clamping connection with the vertical fork groove 23.

As shown in fig. 1, the communication maintaining device 6 further includes a maintaining coil 61, the maintaining coil 61 is fixed inside the communication maintaining device 6, and the first iron core 62 is movably and vertically disposed in an inner cavity of the maintaining coil 61, that is, a state that the first iron core 62 is in clamping fit with the cross slot 34 to realize that the leakage protector maintains circuit communication.

As shown in fig. 5, a bump 41 is further disposed on the pressure lever 22 at a position corresponding to the pressing of the PE wire elastic piece 54, that is, the bump 41 on the pressure lever 22 is in direct contact with the PE wire elastic piece 54, and when the pressure lever 22 is pressed down, the bump 41 makes the PE wire elastic piece 54 be connected with the pin 3 before the first elastic piece 52 and the second elastic piece 53; when the pressing rod 22 is lifted, the protrusion 41 makes the PE wire spring 54 be disconnected 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, then the PE wire spring 54 is disconnected from the pin 3.

When the spring 5 is pressed down, the bump 41 at the top of the PE wire spring 54 will contact the PE wire spring 54 first, so that the spring contact 51 on the PE wire spring 54 contacts the electrical connection contact 16 on the pin 3 connected with the PE wire first, then the spring contact 51 of the live wire spring and the spring contact 51 of the neutral wire spring contact the electrical connection contact 16 on the pin 3, so that in the process of circuit connection, the ground wire contacts and connects first, and the neutral wire contacts and connects second.

When the spring 5 is reset and moves upwards, the spring contact 51 of the live wire spring and the spring contact 51 of the neutral wire spring are separated from the electrical connection contact 16 on the pin 3, and then the spring contact 51 on the PE wire spring 54 is separated from the electrical connection contact 16 on the pin 3 connected with the PE wire, so that in the outage work, the neutral wire is separated first and the ground wire is separated again.

In a specific implementation, as shown in fig. 5, the second pin shaft 31 includes a sleeve portion and a rotation shaft center, the sleeve portion is disposed on the locking lever 8b, the rotation shaft center is disposed on the second support 64, the sleeve portion is sleeved outside the rotation shaft center, and the locking lever 8b can rotate around the rotation shaft center through the sleeve portion; the sleeve part and the pivot of the second pin shaft 31 can well solve the problem that the silent leakage protector of the utility model is worn between the second pin shaft 31 and the second support 64 possibly caused by frequent opening and closing actions of the leakage protector in the actual use process; in a specific implementation, the first pin shaft 21 and the first support 43 adopt the same hinge structure, so that the service life of the mute leakage protector can be effectively ensured.

Example 2:

as shown in fig. 9, compared with embodiment 1, the spring plate 5 includes 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 disposed at two sides of the communication maintaining device 6; the top of the pin 3 is provided with an electric connection contact 16, the ends of the first elastic piece 52 and the second elastic piece 53 are provided with elastic piece contacts 51 corresponding to the electric connection contact 16, and when the elastic piece 5 is pressed down by the pressing rod 22, the elastic piece contacts 51 are contacted with the electric connection contact 16; in this embodiment, the first spring piece 52 and the second spring piece 53 correspond to the live wire pin and the neutral wire pin, respectively, and the PE wire cannot be disconnected, and in this embodiment, the PE wire pin is connected to the PE wire by a wire by removing the PE wire spring piece 54, so that the PE wire is kept in a continuous connected state.

Example 3:

as shown in fig. 7 and 8, compared with embodiment 1, the hinge seat is provided with a pre-hinge device, the pre-hinge device comprises a boss 13 and a clamping groove 14, the boss 13 is located at the hinge position of the upper part 8c of the pressing block, the clamping groove 14 is located at the hinge position of the lower part 8d of the pressing block, the pre-hinge of the upper part 8c of the pressing block and the lower part 8d of the pressing block is realized through the cooperation of the boss 13 and the clamping groove 14, namely, under the condition that the first pin shaft 21 is not installed, the installation work of the elastic sheet pressing block 8a can be completed, meanwhile, the coaxiality of the upper part 8c of the pressing block and the lower part 8d of the pressing block can be further ensured through the design, the abrasion can be reduced, and the whole installation is simpler and more convenient.

Example 4:

compared with embodiment 3, the boss 13 is located at the hinged position of the lower part 8d of the pressing block, and the cooperation of the boss 13 and the clamping groove 14 realizes the pre-hinging of the upper part 8c of the pressing block and the lower part 8d of the pressing block.

Example 5:

as shown in fig. 5 and fig. 6, compared with embodiment 1, the locking lever 8b is further provided with a pressing top block 35, the pressing top block 35 is located at one side of the lock catch 33, when the power is turned on, the second iron core 72 drives the spring plate press block 8a to rotate through the vertical fork groove 23, the lock catch 24 slides upwards along the lock catch slide 36, and the lock catch 24 slides through the lock catch 33 and then is instantaneously abutted with the pressing top block 35, so that the horizontal fork groove 34 moves downwards to the lowest position through being abutted with the pressing top block 35; that is, by the arrangement of the pressing top block 35, the hasp 24 can push the cross fork groove 34 to rotate by a certain angle additionally, so that the cross fork groove 34 can move to the lowest position, and the first iron core 62 can be ensured to adsorb the cross fork groove 34 under the action of the maintaining coil 61.

Example 6:

as shown in fig. 1 and 5, compared with embodiment 1, the lock lever 8b is further provided with a limit baffle 11, the limit baffle 11 is disposed at the end of the lock lever 8b and is located at the upper portion of the second support 64, when the power is disconnected, the limit baffle 11 can abut against the second support 64 to limit the rotation angle of the lock 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 is disconnected, the lock lever 8b can only rotate around the second pin shaft 31 within a limited range, thereby preventing the influence on other parts.

In the mute electric leakage protector, in the actual working and using process, the mute electric leakage protector is connected into a circuit to be protected, when a power supply is connected, a communication coil 71 in a communication device 7 is electrified, a second iron core 72 is retracted, the second iron core 72 is clamped with a vertical fork groove 23 on an elastic piece pressing block 8a, so that the elastic piece pressing block 8a is driven to rotate when the second iron core 72 is retracted, a pressing rod 22 positioned at the bottom of the elastic piece pressing block 8a presses down an elastic piece 5, so that an electric connection contact 16 is contacted with an elastic piece contact 51 to form a passage, a hasp 24 is abutted with a lock catch 33, and at the moment, a first iron core 62 tightens a transverse fork groove 34 under the action of a maintenance coil 61, so that the transverse fork groove 34 is always in a pressed down fixed state, and the electric leakage protector maintains the circuit to be communicated; when the circuit is communicated, the red indication block 42 on the fork groove compression bar 14 moves to the position right below the observation window 15, so that the indication effect is achieved; when the circuit to be protected is in the condition of electric leakage or power failure, and the like, the communication maintaining device 6 stops working, the transverse fork groove 34 loses the downward tension force of the first iron core 62, the hasp 24 and the lock catch 33 are tripped, the elastic piece pressing block 8a does not press the elastic piece 5 downwards, and the electric leakage protector is disconnected to achieve the purpose of protection.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (10)

1. A silent earth leakage protector, characterized in that said silent earth leakage protector comprises: the leakage protection device (2), the base (4) and the elastic sheet (5), wherein the leakage protection device (2) is arranged on the upper part of the base (4), the opening and closing of the mute leakage protector can be controlled through the leakage protection device (2), and the base (4) is also provided with a pin (3) which can be electrically connected with the elastic sheet (5);

the leakage protection device (2) comprises a communication maintaining device (6), a communication device (7) and a locking device (8), wherein the locking device (8) is arranged between the communication maintaining device (6) and the communication 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 (8 a) and a locking deflector rod (8 b), the locking deflector rod (8 b) is movably hinged with a second support (64) arranged on the communication device (7) through a second pin shaft (31), and the elastic piece pressing block (8 a) is movably hinged with a first support (43) arranged in the middle of the base (4) through a first pin shaft (21); a lock catch (33), a cross fork groove (34) and a hasp slideway (36) are arranged on the locking deflector rod (8 b);

the spring plate pressing block (8 a) comprises a pressing block upper portion (8 c) and a pressing block lower portion (8 d), a hasp (24) and a vertical fork groove (23) are arranged on the pressing block upper portion (8 c), a pressing rod (22) is arranged on the pressing block lower portion (8 d), the pressing block upper portion (8 c) is hinged to the pressing block lower portion (8 d) through a first pin shaft (21), a pressing block spring (9) in a compressed state is arranged between the pressing block upper portion (8 c) and the pressing block lower portion (8 d), and when the pressing rod (22) is in an abutting state with the spring plate (5), the elastic force of the pressing block spring (9) can enable the pressing rod (22) to keep a stable acting force on the spring plate (5), and the hasp (24) is used for being in matched abutting connection with the hasp (33);

a second iron core (72) which transversely extends out is arranged on the communication device (7), and the second iron core (72) is in clamping fit with the vertical fork groove (23); the communication maintaining device (6) comprises a first iron core (62) which is longitudinally arranged, and the first iron core (62) can be used for being in clamping fit with the cross fork groove (34);

when the power is on, the second iron core (72) drives the spring plate pressing block (8 a) to rotate through the vertical fork groove (23), so that the pressing rod (22) positioned at the bottom of the spring plate pressing block (8 a) presses down the spring plate (5), meanwhile, the hasp (24) slides upwards along the hasp slideway (36), and in the process that the hasp (24) slides to be abutted with the hasp (33), the horizontal fork groove (34) continuously moves downwards, and the horizontal fork groove (34) is tensioned and fixed through the first iron core (62); the locking deflector rod (8 b) is fixed in position, meanwhile, the spring piece pressing block (8 a) is kept in a pressing state, at the moment, the spring piece (5) and the pin (3) are kept in a connection state, and then circuit communication is achieved;

when the power supply is disconnected, the communication maintaining device (6) stops working, the locking deflector rod (8 b) is released, and the lock catch (33) and the lock catch (24) are tripped, so that the elastic sheet (5) is disconnected from the pin (3), and further circuit breaking is realized.

2. The silent earth leakage protector according to claim 1, characterized in that the spring plate (5) comprises a first spring plate (52), a second spring plate (53) and PE wire spring plates (54), the first spring plate (52) and the second spring plate (53) are fixed by spring plate clamping grooves (55) arranged at both sides of the communication maintaining device (6), and the PE wire spring plates (54) pass through the bottom of the communication maintaining device (6) and are clamped and fixed with the communication maintaining device (6) by the base (4);

the pin (3) top is equipped with electric connection contact (16), first shell fragment (52), second shell fragment (53) and PE line shell fragment (54) tip all be equipped with electric connection contact (16) corresponding shell fragment contact (51), works as depression bar (22) will when shell fragment (5) were pushed down, shell fragment contact (51) with electric connection contact (16) contact, shell fragment contact (51) on first shell fragment (52), second shell fragment (53) and the PE line shell fragment (54) can with electric connection contact (16) disconnection.

3. The mute earth leakage protector according to claim 1, characterized in that a hinge seat is arranged at the hinge position of the upper part (8 c) of the pressing block and the lower part (8 d) of the pressing block, the first pin shaft (21) is arranged in the hinge seat in a penetrating manner, a limit stop (12) is further arranged on the hinge seat, and the limit stop (12) is used for controlling the opening angle between the upper part (8 c) of the pressing block and the lower part (8 d) of the pressing block when the pressing block rotates by taking the first pin shaft (21) as an axis.

4. The silent 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) being fixed inside the communication device (7), the communication spring (73) and the second iron core (72) being horizontally arranged in the inner cavity of the communication coil (71);

the communication maintaining device (6) further comprises a maintaining coil (61), the maintaining coil (61) is fixed inside the communication maintaining device (6), and the first iron core (62) is vertically fixed in an inner cavity of the maintaining coil (61).

5. The silent earth leakage protector according to claim 1, characterized in that the second pin (31) comprises a sleeve part and a pivot center, the sleeve part being arranged on the locking lever (8 b), the pivot center being arranged on the second support (64), the sleeve part being sleeved outside the pivot center, and the locking lever (8 b) being rotatable around the pivot center by means of the sleeve part.

6. A silent earth leakage protector according to claim 3, characterized in that the hinging seat is provided with pre-hinging means comprising a boss (13) and a snap-in recess (14);

when the boss (13) is positioned at the hinge position of the upper part (8 c) of the pressing block, the clamping groove (14) is positioned at the hinge position of the lower part (8 d) of the pressing block, and the pre-hinge of the upper part (8 c) of the pressing block and the lower part (8 d) of the pressing block is realized through the cooperation of the boss (13) and the clamping groove (14);

when the clamping groove (14) is positioned at the hinge position of the upper part (8 c) of the pressing block, the boss (13) is positioned at the hinge position of the lower part (8 d) of the pressing block, and the pre-hinge of the upper part (8 c) of the pressing block and the lower part (8 d) of the pressing block is realized through the cooperation of the boss (13) and the clamping groove (14).

7. The mute earth leakage protector according to claim 1, characterized in that the locking deflector (8 b) is further provided with a pressing top block (35), the pressing top block (35) is located at one side of the lock catch (33), when the power is turned on, the second iron core (72) drives the spring pressing block (8 a) to rotate through the vertical fork groove (23), the lock catch (24) slides upwards along the lock catch slide way (36), and the lock catch (24) slides through the lock catch (33) and then is in instant abutting connection with the pressing top block (35), and the horizontal fork groove (34) moves downwards through abutting connection with the pressing top block (35) so as to be tensioned and fixed by the first iron core (62).

8. The silent earth leakage protector according to claim 1, characterized in that the locking lever (8 b) is further provided with a limit stop (11), the limit stop (11) is arranged at the end of the locking lever (8 b) and is located at the upper part of the second support (64), and when the power is disconnected, the limit stop (11) can abut against the second support (64) to limit the rotation angle of the locking lever (8 b).

9. The silent earth leakage protector according to claim 1, characterized in that the spring plate (5) comprises a first spring plate (52) and a second spring plate (53), the first spring plate (52) and the second spring plate (53) being fixed by spring plate clamping grooves (55) provided at both sides of the communication maintaining means (6);

an electric connection contact (16) is arranged at the top of the pin (3), spring contact (51) corresponding to the electric connection contact (16) is arranged at the end parts of the first spring piece (52) and the second spring piece (53), and when the spring piece (5) is pressed down by the pressing rod (22), the spring contact (51) is contacted with the electric connection contact (16); the spring contact (51) on the first spring (52) and the second spring (53) can be disconnected from the electric connection contact (16), and the PE wire can not be disconnected and kept connected.

10. The silent earth leakage protector according to claim 2, characterized in that the pressure lever (22) is provided with a projection (41) at the position corresponding to the PE wire spring (54), and when the pressure lever (22) is pressed down, the projection (41) enables the PE wire spring (54) to be connected with the pin (3) before the first spring (52) and the second spring (53); when the pressure lever (22) is lifted, the convex block (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).

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