CN216597467U - Silent leakage protector - Google Patents

Abstract

The utility model discloses a silent leakage protector, which relates to the technical field of electrical equipment protection and comprises: 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 an elastic piece pressing block and a locking deflector rod; the locking deflector rod is provided with a lock catch, a transverse fork groove and a hasp slideway; the elastic piece pressing block is provided with a pressing rod, a hasp and a vertical fork groove; the communicating device is provided with a second iron core which extends transversely and is matched with the vertical fork groove in a clamping manner; the communication maintaining device is provided with a first iron core which is longitudinally fixed, the first iron core is in clamping fit with the transverse fork groove, and the elastic piece pressing block comprises a pressing block upper part and a pressing block lower part; according to the utility model, the leakage protector maintains the state of circuit communication through the clamping and matching of the first iron core and the transverse fork groove, and through the design, the clicking sound of the iron core adsorbing the movable pressing plate at the moment that the leakage protector enters the maintaining state in the background technology can be effectively eliminated, so that a good mute state is maintained.

Description

Silent leakage protector

Technical Field

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

Background

When the equipment has leakage fault or needs to protect the person with fatal danger from electric shock, the leakage protector can disconnect the main circuit in time, thereby being widely applied; the application technology of the leakage protector is mature, a coil continuous power supply pull-in release mechanism is adopted, when power supply is interrupted, poor contact is caused and phase loss occurs, the mechanical pull-in holding loop cannot generate magnetic force to attract the self-release mechanism due to voltage loss, the release loop is disconnected, and closed contacts are disconnected to form active protection, so that potential safety hazards are avoided.

A long-life earth-leakage protector disclosed as chinese utility model patent CN211907362U relates to electrical equipment protection technical field, include: the protector device, the pins, the bottom plate and the elastic sheet; the protector device comprises a 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 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 is matched with the vertical fork groove in a clamping manner; 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 leakage protector with the structure adopts the structure that the iron core adsorbs the movable pressing plate to realize the state that the leakage protector maintains circuit communication; however, in the instant when the leakage protector with the structure enters a maintaining state, the iron core adsorbs the movable pressing plate to generate obvious clicking sound, and the silencing effect is poor.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

The utility model aims at the defects in the prior art, and particularly provides a silent leakage protector, which solves the problem that the current leakage protector can be broken only under the condition of power-on, and solves the problems that the current leakage protector can generate obvious clicking sound and has poor silencing effect.

Second, technical scheme

In order to solve the above technical problem, the present invention provides a silent leakage protector, including: the leakage protector is arranged on the upper part of the base, the disconnection and the connection of the silent leakage protector can be controlled 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 transverse 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 compression state is arranged between the pressing block upper part and the pressing block lower part, when the pressing rod and the spring plate are in a butt joint state, the elastic force of the pressing block spring can enable the pressing rod to keep a stable acting force on the spring plate, and the hasp is used for being matched with the hasp to butt joint;

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

when the power supply is switched on, the second iron core drives the elastic sheet pressing block to rotate through the vertical fork groove, so that the pressing rod positioned at the bottom of the elastic sheet pressing block presses the elastic sheet downwards, the hasp slides upwards along the hasp slide way, the transverse fork groove continuously moves downwards in the process that the hasp slides to be abutted against the hasp, and the transverse fork groove is tensioned and 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 contacted with the electric connection contact point, and the elastic sheet contacts on the first elastic sheet, the second elastic sheet and the PE wire elastic sheet can be disconnected with the electric connection contact point.

The hinge joint of the upper part of the pressing block and the lower part of the pressing block is provided with a hinge seat, 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 an opening angle between the upper part of the pressing block and the lower part of the pressing block when the first pin shaft rotates by taking the first pin shaft as an axis.

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

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

The second pin shaft comprises a sleeve 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 clamping groove is positioned at the hinged position of the upper part of the pressing block, the boss is positioned at the hinged position 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.

Wherein, still be equipped with on the locking driving lever and compress tightly the kicking block, compress tightly the kicking block and be located hasp one side, when switch on, the second iron core drives the shell fragment briquetting rotatory through erecting the fork groove, and the hasp upwards slides along the hasp slide to the hasp slides through behind the hasp with compress tightly the instantaneous butt of kicking block, thereby make horizontal fork groove downstream fixed by first iron core tensioning through with compressing tightly the kicking block butt.

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

The elastic 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 pressing rod, the elastic sheet contacts are contacted with the electric connection contact point; the elastic sheet contacts on the first elastic sheet and the second elastic sheet can be disconnected with the electric connection contacts, and the PE wire can not be disconnected and keeps connected.

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

Third, beneficial effect

Compared with the prior art, the silent leakage protector provided by the utility model can be used for breaking the circuit of the silent leakage protector through the matching relation between the 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 silent leakage protector has higher reliability and further enhances the safety performance through the design of the hasp slide way and the spring;

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 silent leakage protector is stable and reliable; the hasp can push the transverse fork groove to rotate for a certain angle through the arrangement of the compression top block, so that the first iron core can adsorb the transverse fork groove more easily;

and, through the first iron core and the state that the horizontal fork groove joint cooperation made earth-leakage protector maintain the circuit intercommunication, through this design, can effectively eliminate in the background art, earth-leakage protector is getting into the moment of maintaining the state, and the sound of the rattling of activity clamp plate is adsorbed to the iron core, keeps good silence state.

Drawings

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

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

FIG. 3 is a power off configuration diagram of the silent earth leakage protector of the present invention;

FIG. 4 is a power on configuration of the silent earth leakage protector of the present invention;

FIG. 5 is a view showing the structure of a locking device of the silent earth leakage protector of the present invention;

FIG. 6 is a structure diagram of a locking deflector rod of the silent leakage protector of the present invention;

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

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

fig. 9 is a structural diagram of a silent leakage protector in accordance with embodiment 2 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 communicating 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 pressure lever; 23 is a vertical fork groove; 24 is a hasp; 31 is a second pin; 33 is a lock catch; 34 is a cross fork groove; 35 is a pressing top block; 36 is a hasp slideway; 41 is a bump; 42 is an indication block; 43 is a first support; 51 is a spring contact; 52 is a first elastic sheet; 53 is a second elastic sheet; 54 is PE line spring plate; 55 is a spring plate clamping groove; 61 is a sustain coil; 62 is a first iron core; 64 is a second support; 71 is a communicating coil; 72 is a second iron core; and 73 is a communication spring.

Detailed Description

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

Example 1:

a silent leakage protector according to an embodiment of the present invention, as shown in fig. 1 and 2, includes: the protector comprises a protector shell 1, a leakage protector 2, a pin 3, a base 4 and an elastic sheet 5, wherein the leakage protector 2 is arranged on the upper part of the base 4, the leakage protector 2 controls the silent leakage protector to be opened and closed, and the pin 3 is arranged on the lower part of the base 4;

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

the locking device 8 comprises a spring plate pressing block 8a and a locking shifting rod 8b, the locking shifting rod 8b is movably hinged with a second support 64 arranged on the communicating device 7 through a second pin shaft 31, and the spring plate pressing block 8a is movably hinged with a first support 43 arranged in the middle of the base 4 through a first pin shaft 21; the locking deflector rod 8b is provided with a lock catch 33, a transverse fork groove 34 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, the pressing block upper portion 8c is provided with a hasp 24 and a vertical fork groove 23, the pressing block lower portion 8d is provided with a pressing rod 22, 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 in clamping fit with the vertical fork groove 23; the communication maintaining device 6 is provided with a first iron core 62 which is longitudinally arranged, the first iron core 62 is fixed on the communication maintaining device 6, and the first iron core 62 is in clamping fit with the transverse fork groove 34;

as shown in fig. 1 and 5, when the buckle 24 slides along the buckle slide way 36 counterclockwise, the locking shift lever 8b can continuously rotate clockwise, so as to avoid the occurrence of the conditions that the cross slot 34 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 adsorption and fixation of the cross slot 34 and the first iron core 62, 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 plate pressing block 8a to rotate through the vertical fork groove 23, so that the pressing rod 22 at the bottom of the spring plate pressing block 8a presses the spring plate 5 downwards, the buckle 24 slides upwards along the buckle slideway 36, and the transverse fork groove 34 drives the buckle to continuously move downwards in the process that the buckle 24 slides to abut against the lock catch 33; the cross fork groove 34 is fixed at the lowest position through the first iron core 62, and the communication maintaining device 6 is used for fixing the position of the locking deflector rod 8b, so that the elastic sheet pressing block 8a keeps a pressing-down state, and the elastic sheet 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, and the latch 33 is disengaged from the buckle 24, so that the elastic piece 5 is disconnected from the pin 3, and the circuit is disconnected.

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

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

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

As shown in fig. 1, the bottoms of the communication maintaining device 6 and the communication device 7 are both provided with a wedge-shaped fastening foot 10, and the communication maintaining device 6 and the communication device 7 are fastened and fixed with the base 4 through the fastening foot 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 and a communication spring 73, the communication coil 71 is fixed inside the communication device 7, the communication spring 73 and the second iron core 72 are sequentially and horizontally arranged in an inner cavity of the communication coil 71, when the power supply is turned off, the elastic force of the communication spring 73 pushes out the second iron core 72 and enables the elastic piece pressing block 8a to rotate clockwise, and at this time, the elastic force of the elastic piece 5 also enables the elastic piece pressing block 8a to rotate clockwise, so that the pressing rod 22 is lifted and the elastic piece 5 is released; when the power is switched on, the communicating coil 71 is electrified, so that the second iron core 72 is clamped with the vertical fork groove 23 to drive the spring plate pressing block 8a to rotate anticlockwise.

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

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

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

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

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 well 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 silent leakage protector of the utility model; in specific implementation, the first pin 21 and the first support 43 adopt the same hinge structure, so that the service life of the silent leakage protector can be effectively ensured.

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 piece 52 and the second elastic piece 53 correspond to the live pin and the neutral pin, respectively, the PE line cannot be disconnected, and in this embodiment, the PE line elastic piece 54 is removed, and the PE line pin is connected to the PE line through a wire, so that the PE line is kept in a continuous connection state.

Example 3:

as shown in fig. 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 lock catch 33, when the power is turned on, the second iron core 72 drives the spring plate pressing block 8a to rotate through the vertical fork groove 23, the buckle 24 slides upwards along the buckle slide way 36, the buckle 24 slides through the lock catch 33 and then instantly abuts against the pressing top block 35, and the horizontal fork groove 34 moves downwards to the lowest position through abutting against the pressing top block 35; that is, by pressing the top block 35, the buckle 24 can push the cross slot 34 to rotate for an additional angle, so that the cross slot 34 can move to the lowest position, and the first iron core 62 can be ensured to absorb the cross slot 34 under the action of the retaining 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 the rotation angle of the locking shift lever 8b, that is, the limit baffle 11 abuts against the top surface of one side of the second support 64, so that after the power supply is turned off, the locking shift lever 8b can only rotate around the second pin 31 within a limited range, and the influence on other parts is prevented.

The silent leakage protector disclosed by the utility model is connected to a circuit to be protected in the actual working and using process, when a power supply is switched on, a communication coil 71 in a communication device 7 is electrified, a second iron core 72 retracts, as the second iron core 72 is clamped with a vertical fork groove 23 on an elastic sheet pressing block 8a, the elastic sheet pressing block 8a is driven to rotate when the second iron core 72 retracts, a pressing rod 22 positioned at the bottom of the elastic sheet pressing block 8a presses down an elastic sheet 5, an electric connection contact point 16 is contacted with an elastic sheet contact point 51 to form a passage, and meanwhile, a hasp 24 is abutted with a hasp 33, at the moment, a first iron core 62 tightly pulls down a transverse fork groove 34 under the action of a maintaining coil 61, so that the transverse fork groove 34 is always in a pressed fixed state, and the leakage protector maintains the circuit to be connected; 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 transverse fork grooves 34 lose the downward tension force of the first iron core 62, the hasps 24 and the lock catches 33 are disengaged, and the elastic piece pressing blocks 8a do not press the elastic pieces 5 down, so that the disconnection of the leakage protector achieves the purpose of protection.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (10)

1. A silent earth-leakage protector, characterized in that said silent 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 part of the base (4), the silent leakage protector can be controlled to be opened or closed through the leakage protector (2), and the base (4) is also provided with a pin (3) which can be electrically connected with the elastic sheet (5);

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

the spring plate pressing block (8a) comprises a pressing block upper portion (8c) and a pressing block lower portion (8d), a buckle (24) and a vertical fork groove (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 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);

a second iron core (72) extending transversely is arranged on the communication device (7), and the second iron core (72) is in clamping fit with the vertical fork groove (23); the 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 clamped and matched with the cross fork groove (34);

when the power supply is switched on, the second iron core (72) drives the elastic sheet pressing block (8a) to rotate through the vertical fork groove (23), so that the pressing rod (22) positioned at the bottom of the elastic sheet pressing block (8a) presses the elastic sheet (5) downwards, meanwhile, the hasp (24) slides upwards along the hasp slide way (36), in the process that the hasp (24) slides to be abutted against the hasp (33), the transverse fork groove (34) continuously moves downwards, and the transverse fork groove (34) is tensioned and fixed through the first iron core (62); the locking deflector rod (8b) is fixed, the elastic piece pressing block (8a) 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 (8b) is released, and the lock catch (33) and the hasp (24) are tripped, so that the elastic sheet (5) and the pin (3) are disconnected, and further the circuit is broken.

2. The silent leakage protector according to claim 1, wherein the elastic sheet (5) comprises a first elastic sheet (52), a second elastic sheet (53) and a PE wire elastic sheet (54), the first elastic sheet (52) and the second elastic sheet (53) are fixed by elastic sheet 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 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. A silent leakage protector according to claim 1, wherein a hinge seat is provided at a hinge point of the upper pressing block portion (8c) and the lower pressing block portion (8d), the first pin (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 pressing block portion (8c) and the lower pressing block portion (8d) when the upper pressing block portion (8c) and the lower pressing block portion (8d) rotate around the first pin (21) as an axis.

4. A silent leakage protector as claimed in claim 1, characterized in that said communicating means (7) further comprises a communicating coil (71) and a communicating spring (73), said communicating coil (71) is fixed inside the communicating means (7), said communicating spring (73) and the second iron core (72) are horizontally arranged in the inner cavity of the communicating coil (71);

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

5. A silent earth leakage protector according to claim 1, characterized in that said second pin (31) comprises a sleeve portion and a pivot axis, said sleeve portion is arranged on said locking lever (8b), said pivot axis is arranged on said second seat (64), said sleeve portion is sleeved outside said pivot axis, and said locking lever (8b) is rotatable around said pivot axis by said sleeve portion.

6. A silent earth-leakage protector as claimed in claim 3, wherein said hinge base is provided with a pre-hinge means, said pre-hinge means comprising a boss (13) and a snap-fit recess (14);

when the boss (13) is positioned at the hinged position of the upper pressing block part (8c), the clamping groove (14) is positioned at the hinged position of the lower pressing block part (8d), and the pre-hinging of the upper pressing block part (8c) and the lower pressing block part (8d) 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 (8c), boss (13) are located the articulated department of briquetting lower part (8d), through the cooperation of boss (13) and joint recess (14), realize the articulated in advance of briquetting upper portion (8c) and briquetting lower part (8 d).

7. The silent earth leakage protector according to claim 1, wherein a pressing top block (35) is further disposed on the locking lever (8b), 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 spring pressing block (8a) to rotate through the vertical fork slot (23), the buckle (24) slides upwards along the buckle slide way (36), and the buckle (24) slides through the latch (33) and then is instantaneously abutted against the pressing top block (35), and the horizontal fork slot (34) moves downwards through abutment against the pressing top block (35) to be tensioned and fixed by the first iron core (62).

8. A silent earth leakage protector according to claim 1, wherein said locking deflector (8b) is further provided with a limiting baffle (11), said limiting baffle (11) is disposed at the end of said locking deflector (8b) and above said second seat (64), and when the power is turned off, said limiting baffle (11) can abut against said second seat (64) to limit the rotation angle of said locking deflector (8 b).

9. A silent earth leakage protector according to claim 1, wherein the elastic sheet (5) comprises a first elastic sheet (52) and a second elastic sheet (53), and the first elastic sheet (52) and the second elastic sheet (53) are fixed by elastic sheet slots (55) arranged 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 down the elastic sheet (5), the elastic sheet contacts (51) are contacted with the electric connection contact point (16); the elastic sheet contacts (51) on the first elastic sheet (52) and the second elastic sheet (53) can be disconnected with the electric connection contact points (16), and the PE wire can not be disconnected and keeps connected.

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

Images