CN217933658U - Long-life earth leakage protector - Google Patents

Abstract

The utility model discloses a long-life earth-leakage protector relates to electrical equipment protection technical field, include: the leakage protection device, the pins, the base and the elastic sheet; the leakage protection device comprises a communication maintaining device, a communication device and a locking device; the locking device comprises a spring plate pressing block and a locking deflector rod; the locking deflector rod is provided with a lock catch, a locking extension end and a hasp slideway; the elastic piece pressing block is provided with a pressing rod, a hasp and a traction plate; the communicating device is provided with a second iron core which extends transversely, and the second iron core is clamped and matched with the traction plate; the communication maintaining device is provided with a first iron core which is longitudinally fixed, the first iron core is matched with the locking extending end, and the elastic piece pressing block comprises an upper pressing block part and a lower pressing block part; the utility model discloses a cooperation of second iron core and traction plate has changed prior art, thereby the structure in iron core actuation drive perpendicular fork groove has effectively avoided the condition that wearing and tearing appear easily after long-time the use, has improved earth-leakage protector's life.

Description

Long-life earth leakage protector

Technical Field

The utility model belongs to the technical field of the electrical equipment protection technique and specifically relates to a long-life earth-leakage protector.

Background

When the equipment has leakage fault or needs to protect the person with fatal danger from electric shock, the leakage protector can disconnect the main circuit in time, thereby being widely applied; the earth-leakage protector application technique is very mature the utility model discloses in designed a from release type mechanical structure, adopted the coil to last power supply actuation release mechanism, when meeting power interruption, bad contact, when lacking mutually, this mechanical structure actuation keeps the return circuit because of losing unable magnetic attraction that produces of voltage from release mechanism, leads to the disconnection of release circuit, thereby closed contact disconnection forms active protection, stops the potential safety hazard.

A long-life earth-leakage protector as disclosed in chinese utility model patent CN211907362U, relating to the technical field of protection of electrical equipment, including: the protector device, the pins, the bottom plate and the 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 hasp slideway; the elastic piece pressing block is provided with a pressing rod, a hasp and a vertical fork groove; the communicating device is provided with a second iron core which extends transversely, and the second iron core is clamped and matched 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 an upper pressing block part and a lower pressing block part; the earth leakage protector with the structure adopts the structure that the iron core is attracted to drive the vertical fork groove to realize the connection of the earth leakage protector, and the structure easily generates larger abrasion in the long-term use process, thereby influencing the safety of an earth leakage protector mechanism.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model discloses to the above-mentioned defect that prior art exists, specially provide a long-life earth-leakage protector, solve the problem that only earth-leakage protector could open circuit under the circumstances of circular telegram that exists among the current earth-leakage protector, solve the easy wearing and tearing of current earth-leakage protector structure simultaneously, problem that life is not long.

2. Technical scheme

In order to solve the technical problem, the utility model provides a long-life earth-leakage protector, include: the leakage protector comprises a leakage protector, a base and an elastic sheet, wherein the leakage protector is arranged at the upper part of the base, the leakage protector with long service life can be controlled to be opened and closed through the leakage protector, and the base is also provided with pins 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 connection and disconnection 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 communicating device through a second pin shaft, and the spring plate pressing block is movably hinged with a first support arranged in the middle of the base through a first pin shaft; the locking deflector rod is provided with a lock catch, a locking extension end and a hasp slideway;

the elastic piece pressing block comprises a pressing block upper portion and a pressing block lower portion, a hasp and a traction plate are arranged on the pressing block upper portion, a pressing rod is arranged on the pressing block lower portion, the pressing block upper portion is hinged to the pressing block lower portion through a first hinge pin, a pressing block spring in a compression state is arranged between the pressing block upper portion and the pressing block lower portion, when the pressing rod and the elastic piece are in a butt joint state, the elastic force of the pressing block spring can enable the pressing rod to keep stable acting force on the elastic piece, and the hasp is used for being in matched butt joint with the hasp;

the communicating device is provided with a second iron core which extends transversely and can be matched with the traction plate in a magnetic adsorption manner; the communication maintaining device comprises a first iron core which is longitudinally arranged, and the first iron core can be used for clamping and matching with the locking extending end or magnetic adsorption matching;

when the power supply is switched on, the second iron core drives the elastic sheet pressing block to rotate through the magnetic adsorption traction plate, so that the pressing rod positioned at the bottom of the elastic sheet pressing block presses the elastic sheet downwards, the hasp slides upwards along the hasp slide way, in the process that the hasp slides to be abutted against the hasp, the locking extension end moves downwards continuously, and the locking extension end is fixed through the first iron core; the locking deflector rod is fixed, the elastic piece pressing block is kept in a pressing state, and the elastic piece and the pin are kept in a connection state at the moment, so that the 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 and the hasp are tripped, so that the elastic sheet and the plug pin are disconnected, and the circuit is further broken.

The elastic pieces comprise a first elastic piece, a second elastic piece and a PE wire elastic piece, 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 piece penetrates through the bottom of the communication maintaining device and is clamped and fixed by the base and the communication maintaining device;

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

Wherein, the articulated department in briquetting upper portion and briquetting lower part is equipped with articulated seat, and first round pin axle is worn to locate in articulated seat, still is equipped with limit stop on the articulated seat, and limit stop is used for controlling the opening angle when using first round pin axle as the axle center rotation between briquetting upper portion and the briquetting lower part.

The connecting device further comprises a connecting coil, the connecting coil is fixed inside the connecting device, the second iron core is transversely fixed in an inner cavity of the connecting coil, and the end part of the second iron core can be used for adsorbing and fixing the traction plate;

the communication maintaining device also comprises a maintaining coil, the maintaining coil is fixed in the communication maintaining device, and the first iron core can be movably and vertically arranged in an inner cavity of the maintaining coil;

the locking extension end is a transverse fork groove, a fork groove clamping portion is arranged at the top of the first iron core, and the fork groove clamping portion can be used for being matched with the transverse fork groove in a clamping mode.

The locking extension end is a movable pressing plate, and the first iron core can be matched with the movable pressing plate in a magnetic adsorption manner;

the communicating device further comprises a communicating coil, the communicating coil is fixed inside the communicating device, the second iron core is transversely fixed in an inner cavity of the communicating coil, and the end part of the second iron core can be used for adsorbing and fixing the traction plate;

the communication maintaining device also comprises an L-shaped metal plate and a maintaining coil, the maintaining coil is fixed in the communication maintaining device, and the first iron core is vertically fixed in an inner cavity of the maintaining coil; one end of the first iron core is fixedly connected with the metal plate base, and the metal plate side plate is matched with the other end of the first iron core and used for adsorbing and fixing the movable pressing plate;

the locking deflector rod is also provided with a pressure plate pin hole, and the movable pressure plate is matched and hinged with the pressure plate pin hole through a pin shaft.

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

The hinge base 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 joint of the upper part of the pressing block, the clamping groove is positioned at the hinge joint of the lower part of the pressing block, and the upper part of the pressing block is pre-hinged with the lower part of the pressing block through the matching of the boss and the clamping groove;

when the joint recess is located the articulated department on briquetting upper portion, the boss is located the articulated department of briquetting lower part, through the cooperation of boss and joint recess, realizes that briquetting upper portion and briquetting lower part are articulated in advance.

Wherein, still be equipped with on the locking driving lever and compress tightly the kicking block, compress tightly the kicking block and be located hasp one side, when switch-on, thereby the second iron core magnetic adsorption traction plate drives the shell fragment briquetting rotatory, and the hasp upwards slides along the hasp slide to the hasp slides through the hasp after with compress tightly the instantaneous butt of kicking block, thereby make the locking stretch out the end downstream through with compress tightly the kicking block butt and be adsorbed or taut fixed by first iron core.

The locking driving lever is provided with a first support, the locking driving lever is provided with a second support, the second support is provided with a second support, and the locking driving lever is connected with the second support through a second connecting 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 formed in two sides of the communication maintaining device;

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

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

3. Advantageous effects

Compared with the prior art, the leakage protector with the long service life can ensure that the leakage protector with the long service life is broken through the matching relation between the mechanical structures under the condition of maintaining the failure of the coil, thereby greatly improving the safety in the use process; meanwhile, the leakage protector with the long service life has stronger reliability through the design of the hasp slide way and the spring, and the safety performance is further enhanced;

the upper part of the pressing block and the lower part of the pressing block are combined in a pressing block spring connection mode to form the elastic piece pressing block, so that the elastic piece pressing block is not only carried out by a fixed and limited mechanical structure in the process of pressing the elastic piece, a pressing rod at the lower part of the pressing block can apply stable pressing force to the elastic piece by adopting the pressing block spring, and after mechanical abrasion is generated due to long-time use in the subsequent process, the opening angle between the upper part of the pressing block and the lower part of the pressing block in the rotation process of taking the first pin shaft as the axis is increased by the elastic force of the pressing block spring, so that the pressing force of the pressing rod at the lower part of the pressing block to the elastic piece is ensured, and the internal electric connection of the long-life leakage protector is stable and reliable;

through the arrangement of the compression top block, the hasp can push the transverse fork groove to rotate for a certain angle additionally, so that the first iron core can adsorb the transverse fork groove more easily;

furthermore, the limitation of the rotation angle range of the locking deflector rod is realized through the limiting action of the limiting baffle; the service life of the leakage protector with long service life is greatly prolonged through the design of the transverse fork grooves;

on the basis of the improvement, still adopt the cooperation of second iron core and traction plate, thereby among the prior art has been changed, thereby the structure of iron core actuation drive vertical fork groove, the condition of wearing and tearing appears easily after having effectively avoided long-time use, earth-leakage protector's life has been improved, still adopt first iron core and the cooperation of horizontal fork groove joint to realize earth-leakage protector and maintain the state of circuit intercommunication simultaneously, can effectively eliminate earth-leakage protector in the twinkling of an eye that gets into the maintenance state, the sound of the rattling of first iron core absorption activity clamp plate, keep good silence state.

Drawings

Fig. 1 is an explosion diagram of the long-life leakage protector of the present invention;

fig. 2 is a perspective view of the long-life leakage protector of the present invention;

fig. 3 is a power supply off state structure diagram of the long-life leakage protector of the present invention;

fig. 4 is a power supply on state structure diagram of the long-life leakage protector of the present invention;

FIG. 5 is a structural diagram of a locking device of the long-life leakage protector of the present invention;

fig. 6 is a structure diagram of a locking deflector rod of the leakage protector with long service life;

fig. 7 is a structural diagram 1 of a spring plate pressing block of the long-life leakage protector of the utility model;

fig. 8 is a structural diagram 2 of a spring plate pressing block of the long-life leakage protector of the utility model;

fig. 9 is a structural diagram of an embodiment 2 of the long-life earth leakage protector of the present invention;

fig. 10 is an internal structure view of the communication maintaining device of the present invention;

fig. 11 is a power supply off state structure diagram of embodiment 8 of the long-life earth leakage protector of the present invention;

fig. 12 is a power source on state structure diagram of embodiment 8 of the long life earth leakage protector of the present invention;

in the figure: 1 is a protector shell; 2 is a leakage protection device; 3 is a pin; 4 is a base; 5. is a spring plate; 6 is a communication maintaining device; 7 is a communication device; 8 is a locking device; 8a is a spring plate 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 fastening pin; 11 is a limit baffle; 12 is a limit stop block; 13 is a boss; 14. is a clamping groove; 15 is an observation window; 16 is an electrical connection contact; 21 is a first pin shaft; 22. is a compression bar; 23 is a traction plate; 24 is a hasp; 31 is a second pin; 33, lock catches; 35. a compaction top block; 36 is a hasp slideway; 41 is a bump; 42 is an indication block; 43 is a first support; 51 is a spring contact; 52 is a first elastic sheet; 53 is a second elastic sheet; 54 is PE wire spring plate; 55 is an elastic sheet clamping groove; 56 is a metal plate; 61 is a sustain coil; 62 is a first iron core; 62a is a fork groove clamping part; 63 is a press plate pin hole; a second support 64; 71 is a communicating coil; 72 is a second core; 100 is a locking extension end; 100a is a movable pressure plate; 100b are cross slots.

Detailed Description

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

Example 1:

the utility model discloses a long-life earth-leakage protector, as shown in fig. 1 and fig. 2, include: the leakage protector comprises a protector shell 1, a leakage protector 2, pins 3, a base 4 and elastic pieces 5, wherein the leakage protector 2 is arranged on the upper portion of the base 4, the leakage protector 2 controls the on-off of the long-life leakage protector, and the pins 3 which can be electrically connected with the elastic pieces 5 are further arranged on 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 an elastic piece 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 communicating device 7 through a second pin shaft 31, and the elastic piece pressing block 8a is movably hinged with a first support 43 arranged in the middle of the base 4 through a first pin shaft 21; the locking deflector rod 8b is provided with a lock catch 33, a locking extension end 100 and a hasp slide way 36; the elastic piece pressing block 8a comprises a pressing block upper portion 8c and a pressing block lower portion 8d, a hasp 24 and a traction plate 23 are arranged on the pressing block upper portion 8c, a pressing rod 22 is arranged on the pressing block lower portion 8d, the pressing block upper portion 8c is hinged to the pressing block lower portion 8d through a first pin shaft 21, a pressing block spring 9 in a compression state is arranged between the pressing block upper portion 8c and the pressing block lower portion 8d, when the pressing rod 22 and the elastic piece 5 are in a butt joint state, the pressing rod 22 can keep stable acting force on the elastic piece 5 through elastic force of the pressing block spring 9, and the hasp 24 is used for being matched with the hasp 33 to be in butt joint; 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, hinged seats are respectively arranged at the hinged positions of the upper part and the lower part of the pressing block, a first pin shaft 21 is arranged in the hinged seats in a penetrating manner, so that the upper part and the lower part of the pressing block can rotate around the first pin shaft 21, the hinged seats are also provided with limit stops 12, and the limit stops 12 are used for controlling the opening angle between the upper part 8c of the pressing block and the lower part 8d of the pressing block when rotating around the first pin shaft 21 as an axis, so that even if the rotating angle between the upper part 8c of the pressing block and the lower part 8d of the pressing block around the first pin shaft 21 is within a certain range, the design can ensure that the elastic pressing block 8a can not be automatically disassembled after being assembled due to the elastic action of the pressing block spring 9 after being assembled, and can limit the upper part 8c of the pressing block and the lower part 8d of the pressing block;

spring grooves are formed in the positions, corresponding to the pressing block spring 9, of the upper portion of the pressing block and the lower portion of the pressing block, the spring grooves are used for installing the pressing block spring 9, meanwhile, the pressing block spring can be prevented from falling off, installation is simpler and more convenient, a spring column is further arranged in each spring groove and used for installing the pressing block spring 9, and the pressing block spring 9 is sleeved on the spring column to enhance the installation and fixing effects;

a second iron core 72 which transversely extends out is arranged on the communication device 7, and the second iron core 72 is matched with the traction plate 23 in a magnetic adsorption manner; 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, the first iron core 62 is in clamping fit or magnetic adsorption fit with the locking protruding end 100, in the embodiment, the locking protruding end 100 is a movable pressing plate 100b, namely, the first iron core 62 is in magnetic adsorption fit with the locking protruding end 100;

as shown in fig. 1 and 5, when the buckle 24 slides along the buckle slide way 36 counterclockwise, the locking shift lever 8b can continuously rotate clockwise, so as to avoid the occurrence of the conditions that the movable pressing plate 100b stops or jumps and the like in the process that the buckle 24 slides along the buckle slide way 36 counterclockwise, because the stop or jump can influence the speed of the movable pressing plate 100b and the first iron core 62 for adsorption and fixation, and the communication failure of the earth leakage protector can be caused by too low speed;

as shown in fig. 1 and 4, when the power is turned on, the second iron core 72 drives the spring piece pressing block 8a to rotate through the traction plate 23, so that the pressing rod 22 at the bottom of the spring piece pressing block 8a presses the spring piece 5 downwards, the buckle 24 slides upwards along the buckle slideway 36, and the movable pressing plate 100b is driven to continuously move downwards in the process that the buckle 24 slides to abut against the lock catch 33; the movable pressing plate 100b is fixedly adsorbed by the first iron core 62, and the communication maintaining device 6 is used for fixing the position of the locking deflector rod 8b, so that the elastic piece pressing block 8a keeps a pressing state, and the elastic piece 5 and the pin 3 keep a closed state, thereby realizing circuit communication;

as shown in fig. 1 and 3, when the power supply is disconnected, the connection maintaining device 6 stops working, the locking lever 8b is released, the latch 33 is disengaged from the buckle 24, the spring 5 is disconnected from the pin 3, and the circuit is disconnected.

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

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

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

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

As shown in fig. 1, the communication device 7 further includes a communication coil 71, the communication coil 71 is fixed inside the communication device 7, the second iron core 72 is horizontally disposed in an inner cavity of the communication coil 71, when the power supply is turned off, the elastic force of the elastic piece 5 also makes the elastic piece pressing block 8a rotate clockwise, so that the pressing rod 22 is lifted and releases the elastic piece 5; when the power is switched on, the communicating coil 71 is energized, so that the second iron core 72 is clamped with the traction plate 23 to drive the elastic sheet pressing block 8a to rotate anticlockwise.

As shown in fig. 1, the communication maintaining device 6 further includes an L-shaped metal plate 56 and 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 the inner cavity of the maintaining coil 61; one end of the first iron core 62 is fixedly connected with the base of the metal plate 56, and the side plate of the metal plate 56 and the other end of the first iron core 62 are used for adsorbing and fixing the movable pressing plate 100b. As shown in fig. 10, the metal plate 56 is provided in the communication maintaining device 6, the metal plate 56 is L-shaped, one end of the first iron core 62 is fixed to the bottom of the metal plate 56, and when the movable pressing plate 100b is attracted by the communication maintaining device 6, the movable pressing plate 100b is simultaneously abutted against the first iron core 62 and the side plate of the L-shaped metal plate 56 to form a complete magnetic circuit, thereby ensuring that the communication maintaining device 6 stably attracts and fixes the movable pressing plate 100b.

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

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

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

In a specific implementation, as shown in fig. 5, the second pin 31 includes a sleeve portion and a rotating shaft center, the sleeve portion is disposed on the locking shift lever 8b, the rotating shaft center is disposed on the second support 64, the sleeve portion is sleeved outside the rotating shaft center, and the locking shift lever 8b can rotate around the rotating shaft center through the sleeve portion; the arrangement of the sleeve portion and the rotating shaft center of the second pin 31 can solve the problem of abrasion between the second pin 31 and the second support 64 caused by frequent opening and closing actions of the leakage protector in the actual use process of the leakage protector with long service life; in concrete implementation, first round pin axle 21 adopts the same hinge structure with first support 43, can effectual assurance the utility model discloses long-life earth-leakage protector's life.

Example 2:

as shown in fig. 9, compared to embodiment 1, the elastic piece 5 includes a first elastic piece 52 and a second elastic piece 53, and the first elastic piece 52 and the second elastic piece 53 are fixed by elastic piece slots 55 disposed at two sides of the communication maintaining device 6; the top of the pin 3 is provided with an electric connection contact point 16, the end parts of the first elastic sheet 52 and the second elastic sheet 53 are provided with elastic sheet contacts 51 corresponding to the electric connection contact point 16, and when the pressing rod 22 presses the elastic sheet 5 down, the elastic sheet contacts 51 are contacted with the electric connection contact point 16; in this embodiment, the first elastic sheet 52 and the second elastic sheet 53 correspond to the live pin and the neutral pin, respectively, and the PE line cannot be disconnected, and in this embodiment, the PE line elastic sheet 54 is removed, and the PE line pin is connected to the PE line through a wire, so that the PE line is kept in a continuous connection state.

Example 3:

as shown in fig. 7 and 8, compared with embodiment 1, the hinge seat is provided with the pre-hinge device, the pre-hinge device includes 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, and through the cooperation of the boss 13 and the clamping groove 14, the pre-hinge of the upper part 8c of the pressing block and the lower part 8d of the pressing block is realized, that is, under the condition that the first pin shaft 21 is not installed, the installation work of the elastic pressing block 8a can be completed, and 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, so that the wear can be reduced, and the whole installation is simpler and more convenient.

Example 4:

compared with the embodiment 3, the boss 13 is positioned at the hinge joint of the lower part 8d of the pressing block, and the upper part 8c of the pressing block is pre-hinged with the lower part 8d of the pressing block through the matching of the boss 13 and the clamping groove 14.

Example 5:

as shown in fig. 5 and fig. 6, compared with embodiment 1, the locking shift lever 8b is further provided with a pressing top block 35, the pressing top block 35 is located on one side of the latch 33, when the power is turned on, the second iron core 72 drives the elastic piece pressing block 8a to rotate through the traction plate 23, the buckle 24 slides upwards along the buckle slide way 36, the buckle 24 slides through the latch 33 and then instantly abuts against the pressing top block 35, and the movable pressing plate 100b moves downwards to the lowest position through abutting against the pressing top block 35; that is, through the setting that compresses tightly kicking block 35, make hasp 24 can promote the extra certain angle of rotation of movable clamp plate 100b, thereby make movable clamp plate 100b can move to the lowest position, when the power switch-on, second iron core 72 contracts the position that can pull the biggest angle of rotation with shell fragment briquetting 8a in the twinkling of an eye, hasp 24 passes through hasp slide 36 and hasp 33 in proper order this moment, at last with compress tightly kicking block 35 and take place the butt, thereby make hasp 24 can promote movable clamp plate 100b and move to the lowest position after extra certain angle of rotation, can guarantee that first iron core 62 adsorbs movable clamp plate 100b under the effect of keeping coil 61.

Example 6:

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

Example 7:

still be equipped with clamp plate pinhole 63 on locking driving lever 8b in embodiment 7, clamp plate pinhole 63 is located locking driving lever 8b upper portion, activity clamp plate 100b is articulated through round pin axle and clamp plate pinhole 63 cooperation, activity clamp plate 100b is in the activity articulated state with locking driving lever 8b promptly, activity clamp plate 100b can rotate around the round pin axle in the certain limit, can guarantee that activity clamp plate 100b can have the biggest area of contact when adsorbing the contact with first iron core 62, guarantee great adsorption affinity, the effectual life who improves the earth-leakage protector of long-life.

The utility model discloses a long-life earth-leakage protector, in the in-service use, in the circuit that this long-life earth-leakage protector inserts the required protection, when the power switch-on, the intercommunication coil 71 circular telegram in the intercommunication device 7, the second iron core 72 contracts, because second iron core 72 and the traction plate 23 joint on the shell fragment briquetting 8a, thereby make the second iron core 72 contract and drive shell fragment briquetting 8a rotatory, the depression bar 22 that is located shell fragment briquetting 8a bottom pushes down shell fragment 5, make electric connection contact 16 and shell fragment contact 51 contact, form the route, make hasp 24 and hasp 33 form the butt simultaneously, first iron core 62 adsorbs movable pressing plate 100b under the effect of holding coil 61 this moment, make movable pressing plate 100b be in the state of being pushed down all the time, thereby make earth-leakage protector maintain the circuit intercommunication; when the circuit is communicated, the red indicating block 42 on the fork groove pressure lever 14 moves to the position right below the observation window 15, so that the indicating effect is achieved; when the circuit needing protection meets the conditions of electric leakage or power failure and the like, the communication maintaining device 6 stops working, the movable pressing plate 100b loses the downward adsorption acting force of the first iron core 62, the hasp 24 is disengaged from the lock catch 33, and the elastic sheet pressing block 8a does not press the elastic sheet 5 down, so that the disconnection of the leakage protector achieves the purpose of protection.

Example 8:

compared with embodiment 1, in this embodiment, the locking protruding end 100 is a transverse fork slot 100a, the top of the first iron core 62 is provided with a fork slot clamping portion 62a, and the fork slot clamping portion 62a can be used for clamping and matching with the transverse fork slot 100 a;

in this structural design, the communication maintaining device 6 further includes a maintaining coil 61, the maintaining coil 61 is fixed inside the communication maintaining device 6, the first iron core 62 is movably and vertically disposed in the inner cavity of the maintaining coil 61, that is, the state of the leakage protector maintaining circuit communication is realized by the clamping and matching of the first iron core 62 and the cross fork groove 100a, through this design, the sound of clicking of the movable pressing plate 100b absorbed by the first iron core 62 at the moment when the leakage protector enters the maintaining state can be effectively eliminated, and a good mute state is maintained.

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

Claims (11)

1. A long life earth leakage protector, characterized in that said long life earth leakage protector comprises: the leakage protector comprises a leakage protector (2), a base (4) and an elastic sheet (5), wherein the leakage protector (2) is arranged on the upper portion of the base (4), the leakage protector with the long service life can be controlled to be opened and closed through the leakage protector (2), and the base (4) is further 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), and 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 plug pin (3);

the locking device (8) comprises a spring plate pressing block (8 a) and a locking shifting rod (8 b), the locking shifting rod (8 b) is movably hinged with a second support (64) arranged on the communicating device (7) through a second pin shaft (31), and the spring plate pressing block (8 a) 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 (8 b) is provided with a lock catch (33), a locking extension end (100) and a hasp slideway (36);

the spring plate pressing block (8 a) comprises a pressing block upper portion (8 c) and a pressing block lower portion (8 d), a buckle (24) and a traction plate (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 compression state is arranged between the pressing block upper portion (8 c) and the pressing block lower portion (8 d), when the pressing rod (22) and the spring plate (5) are in a butt joint state, 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 buckle (24) is used for being matched and abutted with the lock catch (33);

the communication device (7) further comprises a communication coil (71), the communication coil (71) is fixed inside the communication device (7), a second iron core (72) is transversely fixed in an inner cavity of the communication coil (71), and the end part of the second iron core (72) can be used for adsorbing and fixing the traction plate (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 or magnetic adsorption fit with the locking protruding end (100);

when the power supply is switched on, the second iron core (72) drives the elastic sheet pressing block (8 a) to rotate through the magnetic adsorption traction plate (23), so that the pressing rod (22) positioned at the bottom of the elastic sheet pressing block (8 a) presses the elastic sheet (5) downwards, meanwhile, the hasp (24) slides upwards along the hasp slide way (36), in the process that the hasp (24) slides to be abutted against the hasp (33), the locking extension end (100) continuously moves downwards, and the locking extension end (100) is fixed through the first iron core (62); the locking deflector rod (8 b) is fixed, 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 at the moment, so that 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) is tripped from the hasp (24), so that the elastic sheet (5) is disconnected from the pin (3), and the circuit is further broken.

2. The long-life earth leakage protector according to claim 1, wherein the resilient tab (5) comprises a first resilient tab (52), a second resilient tab (53) and a PE wire resilient tab (54), the first resilient tab (52) and the second resilient tab (53) are fixed by resilient tab locking slots (55) disposed at two sides of the communication maintaining device (6), and the PE wire resilient tab (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);

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

3. The long-life earth leakage protector as claimed in claim 1, wherein said upper pressing block portion (8 c) is hinged to the lower pressing block portion (8 d) by a hinge seat, said first pin (21) is inserted into said hinge seat, said hinge seat is further provided with a limit stop (12), said limit stop (12) is used for controlling an opening angle between said upper pressing block portion (8 c) and said lower pressing block portion (8 d) when rotating around said first pin (21).

4. The long-life earth leakage protector as claimed in claim 1, characterized in that said communication maintaining means (6) further comprises a maintaining coil (61), said maintaining coil (61) being fixed inside said communication maintaining means (6), said first iron core (62) being movably and vertically arranged in an inner cavity of said maintaining coil (61);

locking is stretched out end (100) and is violently forked groove (100 a), first iron core (62) top is equipped with forked groove joint portion (62 a), forked groove joint portion (62 a) can be used for cooperating with horizontal forked groove (100 a) joint.

5. The long life earth leakage protector as claimed in claim 1, wherein said locking projection (100) is a movable platen (100 b), said first core (62) being adapted for magnetic attractive engagement with said movable platen (100 b);

the communication maintaining device (6) further comprises an L-shaped metal plate (56) and 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 the inner cavity of the maintaining coil (61); one end of the first iron core (62) is fixedly connected with the metal plate (56) base, and a side plate of the metal plate (56) is matched with the other end of the first iron core (62) to be used for adsorbing and fixing the movable pressing plate (100 b);

the locking deflector rod (8 b) is further provided with a pressing plate pin hole (63), and the movable pressing plate (100 b) is matched and hinged with the pressing plate pin hole (63) through a pin shaft.

6. The long life earth leakage protector as claimed in claim 1, characterized in that said second pin (31) comprises a sleeve portion and a pivot axis, said sleeve portion is disposed on said locking lever (8 b), said pivot axis is disposed on said second support (64), said sleeve portion is fitted around the outside of said pivot axis, and said locking lever (8 b) is rotatable around said pivot axis by said sleeve portion.

7. The long life earth leakage protector as claimed in claim 3, characterized in that said hinge base is provided with pre-hinge means comprising a boss (13) and a snap-in recess (14);

when the boss (13) is positioned at the hinged position of the upper part (8 c) of the pressing block, the clamping groove (14) is positioned at the hinged 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 matching of the boss (13) and the clamping groove (14);

work as joint recess (14) are located the articulated department of briquetting upper portion (8 c), boss (13) are located the articulated department of briquetting lower part (8 d), through the cooperation of boss (13) and joint recess (14), realize the articulated in advance of briquetting upper portion (8 c) and briquetting lower part (8 d).

8. The long-life earth leakage protector according to claim 4 or 5, wherein a pressing top block (35) is further provided on the locking lever (8 b), the pressing top block (35) is located on one side of the latch (33), when the power is turned on, the second iron core (72) magnetically adsorbs the traction plate (23) to drive the spring pressing block (8 a) to rotate, the buckle (24) slides upwards along the buckle slideway (36), and the buckle (24) slides through the latch (33) and then instantaneously abuts against the pressing top block (35), and the locking protruding end (100) moves downwards by abutting against the pressing top block (35) to be adsorbed or tightly fixed by the first iron core (62).

9. The long life earth leakage protector as claimed in claim 1, wherein said locking deflector (8 b) is further provided with a limiting stopper (11), said limiting stopper (11) is disposed at an end of said locking deflector (8 b) and above said second support (64), and said limiting stopper (11) is adapted to abut against said second support (64) when the power is off so as to limit a rotation angle of said locking deflector (8 b).

10. The long-life earth leakage protector as claimed in claim 1, wherein said resilient plate (5) comprises a first resilient plate (52) and a second resilient plate (53), said first resilient plate (52) and said second resilient plate (53) being fixed by resilient plate engaging grooves (55) disposed on both sides of the communication maintaining means (6);

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

11. The long-life earth leakage protector as claimed in claim 2, wherein a protrusion (41) is provided on said pressing rod (22) corresponding to said PE wire spring (54), and when said pressing rod (22) is pressed down, said protrusion (41) makes said PE wire spring (54) connect with said pin (3) before said first spring (52) and said second spring (53); when the pressure lever (22) is lifted, the lug (41) enables the PE wire elastic sheet (54) to be disconnected from the pin (3) after the first elastic sheet (52) and the second elastic sheet (53).

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