CN108962697B

CN108962697B - Leakage protector

Info

Publication number: CN108962697B
Application number: CN201811092278.0A
Authority: CN
Inventors: 钱加灿
Original assignee: Yuyao Jiarong Electronic Appliance Co Ltd
Current assignee: Yuyao Jiarong Electronic Appliance Co Ltd
Priority date: 2018-09-19
Filing date: 2018-09-19
Publication date: 2023-10-03
Anticipated expiration: 2038-09-19
Also published as: CN108962697A

Abstract

The invention discloses a leakage protector, which relates to the technical field of protection of electrical equipment, and comprises the following components: 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 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 longitudinally extends out, 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 invention, under the condition of maintaining the failure of the coil, the leakage protector is disconnected through the matching relation between the mechanical structures; the adoption briquetting spring can make the depression bar of briquetting lower part apply stable clamp force to the shell fragment, through the setting of compressing tightly the kicking block for first iron core can move to the minimum position.

Description

Leakage protector

Technical Field

The invention relates to the technical field of electrical equipment protection, in particular to a 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 leakage protector is mainly used for protecting the life of the equipment from electric shock when the equipment has leakage faults and has the functions of overload and short circuit protection, can be used for protecting the overload and short circuit of a circuit or a motor, and can also be used for starting the circuit without frequent conversion under normal conditions; if the current leakage protector is powered off in the working state, the current leakage protector is still in a closed state, and the current leakage protector can be powered off only under the condition of power on.

A leakage protector as disclosed in chinese patent No. CN 106602508A, which is connected between a power input terminal and a load output terminal, the leakage protector comprising: an insulating housing comprising an upper cover and a base and having a detachable input end and an output end to which wires are connected; a switch assembly disposed within the insulating housing and including a first switch communicating with a phase line path, a second switch communicating with a neutral path, and a third switch communicating with a ground path; the control assembly is arranged in the insulating shell and comprises a reset assembly, a test assembly and a core assembly, wherein the core assembly comprises a circuit board, a magnetic ring assembly and a tripping assembly which are arranged on the circuit board; the leakage protector disclosed by the invention is low in safety performance.

Disclosure of Invention

1. Technical problem to be solved

The invention aims at the defects existing in the prior art, and particularly provides a leakage protector which solves the problem that the leakage protector can be opened only under the condition of electrifying in the existing leakage protector.

2. Technical proposal

In order to solve the above technical problems, the present invention provides a leakage protector, comprising: the protector device is arranged at the upper part of the bottom plate, and controls the opening and closing of the leakage protector;

the protector 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 pins;

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 bottom plate 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 is provided with a first iron core which longitudinally extends out and is in clamping fit 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 abutted with the hasp, the transverse fork groove drives the first iron core to continuously move downwards; the communication maintaining device is used for fixing the position of the locking deflector rod, so that the spring plate pressing block is kept in a pressing state, and the spring plate and the pin are kept in a closed state, thereby realizing circuit communication;

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 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 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 a bottom plate; the top of the pin is provided with an electric connection contact, the tail end of the spring plate is provided with a spring plate contact corresponding to the electric connection contact, and when the spring plate is pressed down by the pressure lever, the spring plate contact is contacted with the electric connection contact; the spring contact points on the first spring piece, the second spring piece and the PE wire spring piece can be disconnected with the electric connection contact points.

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

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 sequentially and horizontally arranged in an inner cavity of the communication coil.

The communication maintaining device further comprises a maintaining coil and a third iron core, the maintaining coil is fixed inside the communication maintaining device, and the third iron core and the first iron core are vertically arranged in an inner cavity of the maintaining coil; one end of the third iron core is fixedly connected with the bottom of the communication maintaining device, and the other end of the third iron core is used for adsorbing the first iron core.

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.

Wherein, be equipped with the articulated device in advance on the articulated seat, the articulated device in advance includes boss and joint recess, and the boss is located the articulated department on briquetting upper portion, and the joint recess is located the articulated department of briquetting lower part, through the cooperation of boss and joint recess, realizes the articulated in advance of briquetting upper portion and briquetting lower part.

Wherein, be equipped with the articulated device in advance on the articulated seat, the articulated device in advance includes boss and joint recess, and the joint recess is located the articulated department on briquetting upper portion, and the boss is located the articulated department of briquetting lower part, through the cooperation of boss and joint recess, realizes the articulated in advance of briquetting upper portion and briquetting lower part.

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 drives the first iron core to move downwards to the lowest position through the butt with the pressing ejector block.

The locking deflector rod is further provided with an indication block, the indication block is located on the upper portion of the locking deflector rod, when the power supply is on, the indication block moves into the observation window of the protector shell, when the power supply is off, the indication block moves out of the observation window of the protector shell, and the indication block is red in color.

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 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 leakage protector provided by the invention can ensure that the leakage protector is disconnected 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 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 block does not only rely on a fixed and limited mechanical structure in the pressing spring pressing process, a 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, 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 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 can move to the lowest position;

further, limit baffle's spacing effect has realized the restriction to the rotation angle scope of locking driving lever.

Drawings

FIG. 1 is an exploded view of the earth leakage protector of the present invention;

FIG. 2 is a perspective view of the leakage protector of the present invention;

FIG. 3 is a block diagram of the power off state of the leakage protector of the present invention;

FIG. 4 is a diagram showing a power-on state of the leakage protector according to the present invention;

FIG. 5 is a block diagram of a locking device of the earth leakage protector of the present invention;

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

FIG. 7 is a diagram of a spring plate press block structure of the leakage protector of the present invention in FIG. 1;

FIG. 8 is a diagram of a spring plate press block structure of the leakage protector of the present invention in FIG. 2;

FIG. 9 is a block diagram of an embodiment 2 of the leakage protector according to the present invention;

in the figure: 1 is a protector shell; 2 is a protector device; 3 is a pin; 4 is a bottom plate; 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; 63 is a third 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 invention with reference to the drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.

Example 1:

an embodiment of the present invention provides a leakage protector, as shown in fig. 1 and 2, including: the protector comprises a protector shell 1, a protector device 2, pins 3, a bottom plate 4 and an elastic sheet 5, wherein the protector device 2 is arranged at the upper part of the bottom plate 4, the protector device 2 controls the opening and closing of the leakage protector, and the pins 3 are arranged at the lower part of the bottom plate 4;

the protector 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 bottom plate 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 longitudinally extends, 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 slot 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 speed of the cross slot 34 for pressing down 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, 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 the first iron core 62 to continuously move downwards; the communication maintaining device 6 is used for fixing the position of the locking deflector rod 8b, 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 bottom plate 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 bottom plate 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 and a third iron core 63, the maintaining coil 61 is fixed inside the communication maintaining device 6, and the third iron core 63 and the first iron core 62 are vertically disposed in an inner cavity of the maintaining coil 61; one end of the third iron core 63 is fixedly connected with the bottom of the communication maintaining device 6, and the other end of the third iron core 63 is used for adsorbing the first iron core 62; when the power is turned on, the maintaining coil 61 is energized, the first iron core 62 is attracted by the third iron core 63, the hasp 24 and the hasp 33 are kept in an abutting state, and the leakage protector is in a communicating state; when the power is disconnected, the maintenance coil 61 is powered off, the first iron core 62 is released, the lock catch 33 and the lock catch 24 are released, the elastic piece 5 and the pin 3 are disconnected, and then the circuit breaking is realized.

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 leakage protector is likely to be worn between the second pin shaft 31 and the second support 64 due to frequent opening and closing actions 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 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, and the horizontal fork groove 34 drives the first iron core 62 to move downwards to the lowest position through the abutment 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 for a certain angle additionally, so that the first iron core 62 can move to the lowest position, when the power is turned on, the second iron core 72 can retract to pull the elastic sheet pressing block 8a to the position with the maximum angle, at this time, the hasp 24 sequentially passes through the hasp slideway 36 and the hasp 33 and finally abuts against the pressing top block 35, so that the hasp 24 can push the cross fork groove 34 to rotate for a certain angle additionally, and the first iron core 62 can move to the lowest position, so that the first iron core 62 can be ensured to be adsorbed 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 practical operation process of the leakage protector, the 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, and as the second iron core 72 is clamped with a vertical fork groove 23 on an elastic piece pressing block 8a, 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 the elastic piece 5, so that an electric connection contact 16 is in contact with the elastic piece contact 51 to form a passage, a hasp 24 is abutted with a lock catch 33, and at the moment, the first iron core 62 is adsorbed under the action of a maintenance coil 61, so that a transverse fork groove 34 is always in a pressed state, and the 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, the communication maintaining device 6 stops working, the transverse fork groove 34 loses the downward pressure 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 down the elastic piece 5, and the electric leakage protector is disconnected to achieve the purpose of protection.

The foregoing is merely a preferred embodiment of the present invention, 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 invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. A leakage protector, characterized in that the leakage protector comprises: the electric leakage protector comprises a protector device (2), pins (3), a bottom plate (4) and an elastic sheet (5), wherein the protector device (2) is arranged at the upper part of the bottom plate (4), the protector device (2) controls the electric leakage protector to be opened and closed, and the pins (3) are arranged at the lower part of the bottom plate (4);

the protector 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 bottom plate (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); a first iron core (62) extending longitudinally is arranged on the communication maintaining device (6), and the first iron core (62) is 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 a 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 lock catch (33), the horizontal fork groove (34) drives the first iron core (62) to continuously move downwards; the communication maintaining device (6) is used for fixing the position of the locking deflector rod (8 b), so that the elastic piece pressing block (8 a) is kept in a pressing state, and the elastic piece (5) and the pin (3) are kept in a connection state, and further circuit communication is realized;

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 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 a PE wire spring plate (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 plate (54) passes through the bottom of the communication maintaining device (6) and is clamped and fixed by the bottom plate (4) and the communication maintaining device (6);

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 leakage protector according to claim 1, wherein a hinge seat is provided at a 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 inserted into the hinge seat, a limit stop (12) is further provided on the hinge seat, and the limit stop (12) is used for controlling an 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 with the first pin shaft (21) as an axis.

4. The earth leakage protector according to claim 1, characterized in that the bottom parts of the communication maintaining device (6) and the communication device (7) are provided with wedge-shaped buckling feet (10), and the communication maintaining device (6) and the communication device (7) are respectively buckled and fixed with the bottom plate (4) through the buckling feet (10).

5. The 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 an inner cavity of the communication coil (71).

6. The earth leakage protector according to claim 1, characterized in that the communication maintaining means (6) further comprises a maintaining coil (61) and a third iron core (63), the maintaining coil (61) being fixed inside the communication maintaining means (6), the third iron core (63) and the first iron core (62) being vertically arranged in an inner cavity of the maintaining coil (61); one end of the third iron core (63) is fixedly connected with the bottom of the communication maintaining device (6), and the other end of the third iron core (63) is used for adsorbing the first iron core (62).

7. The earth leakage protector according to claim 1, characterized in that the second pin (31) comprises a sleeve portion and a pivot, the sleeve portion being provided on the locking lever (8 b), the pivot being provided on the second support (64), the sleeve portion being sleeved outside the pivot, and the locking lever (8 b) being rotatable around the pivot by the sleeve portion.

8. A leakage protector according to claim 3, characterized in that the hinge base 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 (8 c) of the pressing block, the clamping groove (14) is located 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).

9. A leakage protector according to claim 3, characterized in that the hinging seat is provided with a pre-hinging device, the pre-hinging device comprises a boss (13) and a clamping groove (14), the clamping groove (14) is positioned at the hinging position of the upper part (8 c) of the pressing block, the boss (13) is positioned at the hinging position of the lower part (8 d) of the pressing block, and the pre-hinging 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).

10. The leakage protector according to claim 1, wherein the locking shift lever (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 leaf 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) drives the first iron core (62) to move downwards to the lowest position through abutting connection with the pressing top block (35).

11. The earth leakage protector according to claim 1, characterized in that the positions of the upper part (8 c) of the pressing block, which correspond to the lower part (8 d) of the pressing block, are provided with spring grooves, in which spring grooves spring columns are also provided, which are used for mounting the pressing block springs (9).

12. The earth leakage protector according to claim 1, characterized in that the locking lever (8 b) is further provided with an indication block (42), the indication block (42) is located at the upper part of the locking lever (8 b), when the power is turned on, the indication block (42) moves into the observation window (15) of the protector housing (1), when the power is turned off, the indication block (42) moves out of the observation window (15) of the protector housing (1), and the indication block (42) is red in color.

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

14. The 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.

15. The earth leakage protector according to claim 2, characterized in that the pressure bar (22) is provided with a bump (41) at the position corresponding to the PE wire spring piece (54), and when the pressure bar (22) is pressed down, the bump (41) enables the PE wire spring piece (54) to be connected with the pin (3) before the first spring piece (52) and the second spring piece (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).