CN114758936A - Rotary maintaining type leakage protector - Google Patents

Abstract

The invention discloses a rotary maintaining type leakage protector, relating to the technical field of leakage protectors, comprising: the leakage protection device comprises a reset key, a reset rotary stop block, an electromagnetic driving device and an elastic sheet; the base is also provided with an electric connection end which can be electrically connected with the elastic sheet; the two sides of the reset rotary stop block are provided with extension ends which can be abutted against the elastic sheets; the electromagnetic driving device is arranged on one side of the upper part of the base, a driving iron core is arranged on the electromagnetic driving device, and the electromagnetic driving device can drive the driving iron core to move so as to drive the reset rotary stop block to rotate around the extending end; the reset rotary stop block is provided with a fastening fixture block protruding inwards, and the reset key drives the reset rotary stop block to move synchronously through the fastening fixture block; under the clamping state of the fastening fixture block and the reset key, the invention can form active protection and put an end to potential safety hazards, and through the arrangement of the rotatable reset rotary stop block, the abrasion between the parts is reduced, and the overall sensitivity of the mechanism is greatly improved.

Description

Rotary maintaining type leakage protector

Technical Field

The invention relates to the technical field of leakage protectors, in particular to a rotary maintenance type leakage protector.

Background

When the equipment has leakage fault or needs to protect the person with fatal danger from electric shock, the leakage protector can disconnect the main circuit in time, thereby being widely applied; the application technology of the leakage protector is mature, and the leakage protector is divided into a voltage type and a current type according to the protection principle. From the mechanical structure, there are self-locking type and attraction type, but the current or voltage mechanical self-locking type leakage protector is mainly used. The biggest characteristic of the mechanical self-locking structure is as follows: when the power supply of the working leakage protector is interrupted or the power supply loop is in phase failure and the line is in poor contact, the mechanical self-locking structure of the leakage protector in a closed state can not actively disconnect the closed contact, and at the moment, if the power supply loop is in abnormal phase failure and the ground wire is in abnormal electrification or leaks electricity, the leakage protector loses the protection effect, so that safety accidents are caused; moreover, the buckling piece of the existing leakage protector structure generally slides in a surface contact mode, so that the friction force is large, and the service life of a movable part is influenced;

aiming at the problems, the invention designs a self-release type rotating structure, a coil continuous power supply pull-in release mechanism is adopted, when power supply is interrupted, contact is poor and phase is lost, the structure pull-in holding loop can not generate magnetic force to pull the self-release mechanism due to voltage loss, so that the release loop is disconnected, and a closed contact is disconnected, thereby forming active protection, avoiding potential safety hazards, reducing abrasion among components and prolonging the service life.

The leakage protector disclosed by chinese utility model patent CN211907362U includes: 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 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 is complex in structure and larger in size.

Disclosure of Invention

First, technical problem to be solved

The invention provides a rotary maintaining type leakage protector aiming at the defects in the prior art, solves the problems of complex structure and serious friction between parts of the conventional leakage protector, and also solves the problem that the conventional leakage protector can be broken only under the condition of power-on.

Second, technical scheme

To solve the above technical problem, the present invention provides a rotary type maintaining leakage protector, comprising: the leakage protection device comprises a reset key, a reset rotary stop block, an electromagnetic driving device and an elastic sheet; the base is also provided with an electric connection end which can be electrically connected with the elastic sheet;

the reset rotary stop block can be movably arranged on the upper part of the base up and down, and two sides of the reset rotary stop block are provided with extension ends which can be abutted against the elastic sheets; the electromagnetic driving device is arranged on one side of the upper part of the base, a driving iron core is arranged on the electromagnetic driving device, the driving iron core extends out of the electromagnetic driving device and is movably clamped with the side wall of the reset rotary stop block, and the electromagnetic driving device can drive the driving iron core to move so as to drive the reset rotary stop block to rotate around the extending end;

the reset rotary stop block is provided with a fastening fixture block protruding inwards, the reset key is sleeved with a reset spring, one end of the reset spring is abutted against the upper part of the upper cover plate, and the other end of the reset spring is abutted against the reset key; the reset key penetrates through the upper cover plate and is inserted into the reset rotary stop block, and the reset key can drive the reset rotary stop block to synchronously move through the fastening fixture block; when the reset key is not pressed by external force, the reset key resets and moves upwards under the action of a reset spring, and the reset rotary stop block drives the elastic sheet to move upwards and contact with the power connection end to be powered on;

The electromagnetic driving device in the continuous power-on state can enable the driving iron core to continuously tension the reset rotary stop dog, enable the buckling connection clamping block to be continuously clamped with the reset key, and enable the elastic sheet and the power connection end to be kept in a contact power-on state through the reset rotary stop dog by the reset key;

after the electromagnetic driving device in the continuous power-on state loses power, the driving iron core releases the reset rotary stop block, the fastening clamping block and the reset key are separated from the clamping state, and the elastic sheet is separated from the power-on end under the action of self elasticity to cut off the power.

Wherein, the reset button is provided with a bayonet which is matched with the buckling fixture block in a buckling way, and the bayonet is provided with an upper buckling surface and a lower tripping inclined surface.

The reset rotary stop block is provided with an open slot on one side wall close to the driving iron core, the fastening fixture block is arranged on one side wall opposite to the open slot, and the open slot is used for being fastened with the driving iron core.

The top of the base is provided with a sliding groove which can enable the reset rotary stop block to be inserted into the base from top to bottom, the reset rotary stop block can move up and down relative to the sliding groove, and the reset rotary stop block can also extend out of the end to rotate in the sliding groove.

After the electromagnetic driving device is powered off, the driving iron core releases the reset rotary stop block, the reset key moves upwards under the action of the reset spring, and the reset rotary stop block slides out along the lower inclined surface of the reset key in the upwards movement process of the reset key and is separated from a clamping state with the reset key.

The electric connection end is of a pin structure and comprises a zero line pin, a live wire pin and a ground wire pin, the elastic pieces comprise a zero line elastic piece and a live wire elastic piece, the zero line pin corresponds to the zero line elastic piece in position, the live wire pin corresponds to the live wire elastic piece in position, and the ground wire pin is directly connected with the ground wire; the two extending ends are arranged at the lower parts of the zero line elastic sheet and the live wire elastic sheet, and the zero line elastic sheet and the live wire elastic sheet can automatically move downwards under the action of self elasticity.

The electric connection end is of a pin structure and comprises a zero line pin, a live line pin and a ground wire pin, the elastic pieces comprise a zero line elastic piece, a live line elastic piece and a ground wire elastic piece, the zero line pin corresponds to the zero line elastic piece in position, the live line pin corresponds to the live line elastic piece in position, and the ground wire pin corresponds to the ground wire elastic piece in position; the two extending ends are arranged at the lower parts of the zero line elastic sheet and the live line elastic sheet, and the zero line elastic sheet and the live line elastic sheet can automatically move downwards under the action of self elasticity; the bottom of the reset rotary stop block is provided with a ground wire extension end which is arranged at the top of the ground wire elastic sheet and used for controlling the ground wire elastic sheet to move downwards, and the ground wire elastic sheet can automatically move upwards under the action of self elasticity.

The leakage protection device further comprises a pressing guide block, the pressing guide block is clamped and arranged on one side of the upper portion of the base, and a pressing end used for pressing and fixing the power connection end on the base is arranged on the pressing guide block.

Wherein, the electric connection end and the spring plate are embedded on the base; the electric connection end and the elastic sheet are provided with corresponding electric connection contacts, one end of the reset rotary check block is also provided with an extended indicating rod, and the indicating rod can rotate along with the reset rotary check block so as to display the state of the leakage protector.

Wherein, the rotatory dog that resets is passed to the button bottom that resets, is equipped with the jack that corresponds with the button bottom that resets on the base.

The bottom of the reset key penetrates through the reset rotary stop block and the ground wire elastic sheet, and the base is provided with a jack corresponding to the bottom of the reset key.

Wherein, still be equipped with supplementary ground wire reset spring between ground wire shell fragment and the base.

Wherein, be equipped with supplementary trip spring between the bottom of the rotatory dog that resets button bottom and the bottom that resets.

The extension end of the ground wire can enable the zero line elastic sheet and the live wire elastic sheet to be disconnected before the ground wire elastic sheet.

Wherein, the side part of the reset key is also provided with a reset chute, a sliding guide post is also arranged in the reset rotary blocking block, the reset chute can be correspondingly matched with the sliding guide post,

the upper portion of the reset sliding groove is provided with a sliding groove transition inclined plane, the reset key presses down, the sliding guide pillar slides in cooperation with the reset sliding groove firstly, then slides out along the sliding groove transition inclined plane and abuts against the side face of the reset key, and the reset rotary stop block rotates towards one side of the electromagnetic driving device.

Third, beneficial effects

Compared with the prior art, the rotary maintaining type leakage protector provided by the invention maintains the closed state of the leakage protector by adopting a mode of continuously supplying power to an electromagnetic driving device, attracting and clamping, when the leakage protector is subjected to power interruption, poor contact and phase failure, the electromagnetic driving device cannot generate magnetic force due to voltage loss, so that a clamping structure of a clamping opening and a reset rotary stop block is not clamped, and further a reset button and the reset stop block are in a separation state which cannot be linked, so that the leakage protector is separated to cut off the power, active protection is formed, and potential safety hazards are eliminated;

meanwhile, through the arrangement of the rotatable reset rotary stop block, the abrasion among components is effectively reduced, the service life is prolonged, and the overall sensitivity of the mechanism is greatly improved;

meanwhile, through the arrangement of the auxiliary tripping spring, when the electromagnetic driving device is in a power failure state, the reset rotary stop block can move downwards under the action of the elastic force of the auxiliary tripping spring, so that the elastic sheet is ensured to move downwards and be separated from the power connection end to be powered off.

Drawings

Fig. 1 is a perspective view of the leakage protector of the present invention in an off state;

fig. 2 is a perspective view of the leakage protector in a closed state;

FIG. 3 is a perspective view of the internal structure of the earth leakage protector of the present invention;

FIG. 4 is a perspective view of a reset rotary stop of the earth-leakage protector of the present invention;

fig. 5 is a cross-sectional view of the earth-leakage protector of the present invention;

FIG. 6 is a schematic view of the inner structure of the ground spring of the present invention 1;

FIG. 7 is an internal structure view of the ground spring of the present invention 2;

FIG. 8 is a schematic view of the inner structure of the groundless dome of the present invention 1;

fig. 9 is an internal structure view of the groundless dome of the present invention 2;

FIG. 10 is a diagram of the structure of the base of the groundless dome of the present invention;

FIG. 11 is a block diagram of the reset button of the present invention;

fig. 12 is a structural view of the auxiliary trip spring sleeved on the key lever according to the present invention;

in the figure: 1 is a base; 2 is a leakage protection device; 3 is an upper cover plate; 4 is a reset key; 5 is a reset rotary stop block; 6 is an electromagnetic driving device; 7 is a spring plate; 8 is an electric connection end; 9 is a key button; 10 is a key lever; 11 is a return spring; 12 is a bayonet; 13 is an open slot; 14 is an indicating rod; 15 is an extension end; 16 is a fastening fixture block; 17 is a zero line spring plate; 18 is a live wire shrapnel; 19 is a tripping lower inclined plane; 20 is an upper clamping surface; 21 is an electrical connection contact; reference numeral 22 denotes a neutral pin; 23 is a driving iron core; 24 is a live wire pin; 25 is a ground pin; 26 is a sliding groove; 27 is an electromagnetic coil; 29 is a sliding guide post; 30 is an auxiliary tripping spring; 31 is a jack; 32 is the ground wire extension end; 33 is a static iron core; 34 is a ground wire elastic sheet; 35 is a reset sliding chute; 36 is a chute transition inclined plane; 37 is an auxiliary ground wire return spring; and 38 is a bullet hole.

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 invention but are not intended to limit the scope of the invention.

Example 1:

a rotary maintenance-type leakage protector according to an embodiment of the present invention, as shown in fig. 1 to 9, includes: the leakage protection device comprises a base 1, a leakage protection device 2 and an upper cover plate 3, wherein the leakage protection device 2 comprises a reset key 4, a reset rotary stop block 5, an electromagnetic driving device 6 and an elastic sheet 7; the base 1 is also provided with an electric connection end 8 which can be electrically connected with the elastic sheet 7, in the embodiment, the upper cover plate 3 can adopt a partition plate made of plastics or other materials which only plays a role of supporting the reset spring 11, and also can play the same role by adopting a circuit board; the leakage protection device 2 further comprises a pressing guide block, the pressing guide block is clamped and arranged on one side of the upper portion of the base 1, the pressing guide block is positioned and fixed through a clamping groove correspondingly formed in the base 1, and a pressing end used for pressing and fixing the power connection end 8 on the base 1 is arranged on the pressing guide block;

the reset rotary stop block 5 is movably arranged on the upper part of the base 1 up and down, the top of the base 1 is provided with a sliding groove 26 which can accommodate the reset rotary stop block 5 to be inserted into the base 1 from top to bottom, the reset rotary stop block 5 is clamped with the sliding groove 26 through the extension ends 15 at two sides, the cylindrical reset rotary stop block 5 can rotate the extension end 15 in the sliding groove 26 as an axis, and the contact and separation of the elastic sheet 7 and the power connection end 8 are controlled through the up-and-down movement of the extension end 15, namely the power-on and the power-off of the leakage protector;

The electromagnetic driving device 6 is arranged at one side of the upper part of the base 1, a movable driving iron core 23 is arranged in the electromagnetic driving device 6, the extending end of the driving iron core 23 is movably clamped with the side wall of the reset rotation stop block 5, as shown in fig. 4, 5 and 6, an open slot 13 is arranged on one side wall of the reset rotation stop block 5 close to the driving iron core 23, a fastening fixture block 16 is arranged on one side wall opposite to the open slot 13, the open slot 13 is used for being clamped and matched with the driving iron core 23, and when the electromagnetic driving device 6 is electrified, as shown in fig. 2 and 5, the driving iron core 23 is adsorbed, tensioned and fixed by a static iron core 33 in the electromagnetic driving device 6;

the reset key 4 comprises a key button 9 and a key rod 10, as shown in fig. 1, the key rod 10 is sleeved with a reset spring 11, one end of the reset spring 11 is abutted with the upper part of the upper cover plate 3, and the other end of the reset spring 11 is abutted with the reset key 4; the reset button 4 penetrates through the upper cover plate 3 to be inserted into the reset rotary stop block 5, a bayonet 12 in clamping fit with the buckling stop block 16 is formed in the button rod 10, an upper clamping surface 20 and a lower tripping inclined surface 19 are formed in the bayonet 12, and the bayonet 12 is shaped like a 7-shaped opening;

when the leakage protector is in an initial state without electricity, the electromagnetic driving device 6 does not work, the driving iron core 23 is in a free state without magnetic force adsorption, the reset rotary stop 5 is not constrained by force, the buckling clamping block 16 of the reset rotary stop 5 is separated from the reset key 4 in a clamping state, the elastic sheet 7 is separated from the electric connection end 8 under the action of the self elasticity, and at the moment, the reset key 4 is pressed down to compress the reset spring 11 or the reset key 4 is reset upwards, so that the reset rotary stop 5 cannot be driven to move;

When the leakage protector is powered on, as shown in fig. 5, the electromagnetic driving device 6 is in a continuous power-on state to generate magnetic force and adsorb the driving iron core 23, the reset rotation stopper 5 is continuously tensioned through the driving iron core 23, at this time, the fastening fixture block 16 is clamped with the bayonet 12, and in this state, the reset button 4 moves up and down to synchronously drive the reset rotation stopper 5 to move;

when the power failure of the leakage protector occurs, namely when the leakage protector meets the unexpected conditions of power interruption, poor contact, phase loss, leakage and the like, the electromagnetic driving device 6 loses power, the driving iron core 23 releases the reset rotary stop block 5, the fastening clamping block 16 of the reset rotary stop block 5 is separated from the reset key 4 in a clamping state, the elastic sheet 7 is separated from the power connection end 8 under the action of the elastic force of the elastic sheet, and the reset spring 11 drives the reset key 4 to reset upwards.

Further, the reset button 4 can move up under the action of the reset spring 11, in the upward movement process of the reset button 4, the reset rotary stop 5 loses the pulling force action applied to the reset rotary stop 5 by the driving iron core 23, the fastening fixture block 16 can slide out along the lower inclined surface 19 of the tripping of the reset button 4 and is separated from the clamping state with the reset button 4, in the state, the reset button 4 and the reset rotary stop 5 are in a separated state, and at the moment, the elastic sheet 7 drives the reset rotary stop 5 to move down under the action of self elasticity and is separated from the power connection end 8 to cut off the power.

The greater the inclination angle of the trip lower slope 19, which is defined as the acute angle between the trip lower slope 19 and the horizontal plane, the more easily the trip latch 16 slides out of the trip lower slope 19, and thus the greater the inclination angle, which is defined as the acute angle between the trip lower slope 19 and the horizontal plane, the greater the holding force of the driving core 23.

This embodiment is through foretell structural design, adopt electromagnetic drive device 6 to last the mode of power supply actuation joint, make the earth-leakage protector meet power interruption, bad contact, lack the looks, when electric leakage, this electromagnetic drive device 6 is because of losing the unable magnetic force that produces of voltage, make bayonet 12 and fastening fixture block 16's joint structure not in the joint, and then make the button 4 that resets and be in the detached state between the rotatory dog 5 that resets, thereby make the earth-leakage protector separation and the outage forms active protection, stop the potential safety hazard.

As shown in fig. 8 and 9, the power connection terminal 8 is of a pin structure and includes a neutral pin 22, a live pin 24 and a ground pin 25, the elastic piece 7 includes a neutral elastic piece 17 and a live elastic piece 18, the neutral pin 22 corresponds to the neutral elastic piece 17, the live pin 24 corresponds to the live elastic piece 18, and the ground pin 25 is directly connected to the ground; the two extending ends 15 are arranged at the lower parts of the zero line elastic sheet 17 and the live line elastic sheet 18, the zero line elastic sheet 17 and the live line elastic sheet 18 can automatically move downwards under the action of self elasticity, and corresponding electric connection contact points 21 are arranged on the electric connection end 8 and the elastic sheet 7, so that the stability and reliability of electric connection can be guaranteed.

The two-pole disconnection effect can be achieved in the embodiment, namely the neutral pin 22 corresponds to the neutral spring plate 17, the live pin 24 corresponds to the live spring plate 18, and the two-pole disconnection means that the neutral pin 22 and the neutral spring plate 17 are controlled to be disconnected and closed, and the live pin 24 and the live spring plate 18 are controlled to be disconnected and closed through the reset rotary stop 5.

Example 2:

compared with embodiment 1, in this embodiment, as shown in fig. 6 and 7, the electric connection terminal 8 is a pin structure and includes a neutral pin 22, a live pin 24 and a ground pin 25, the elastic piece 7 includes a neutral elastic piece 17, a live elastic piece 18 and a ground elastic piece 34, the neutral pin 22 corresponds to the neutral elastic piece 17, the live pin 24 corresponds to the live elastic piece 18, and the ground pin 25 corresponds to the ground elastic piece 34; the two extending ends 15 are arranged at the lower parts of the zero line elastic sheet 17 and the live line elastic sheet 18, and the zero line elastic sheet 17 and the live line elastic sheet 18 can automatically move downwards under the action of self elasticity; the bottom of the reset rotary stop 5 is provided with a ground wire extension end 32, the ground wire extension end 32 is arranged at the top of the ground wire elastic sheet 34 and used for controlling the ground wire elastic sheet 34 to move downwards, and the ground wire elastic sheet 34 can automatically move upwards under the action of self elasticity; corresponding electric connection contact points 21 are arranged on the electric connection end 8 and the elastic sheet 7, so that the stability and reliability of electric connection can be ensured;

In this embodiment, a triple-pole disconnection effect can be achieved, that is, the ground pin 25 corresponds to the ground spring 34, the neutral pin 22 corresponds to the neutral spring 17, the live pin 24 corresponds to the live spring 18, and triple-pole disconnection means that disconnection and connection of the three can be controlled, and disconnection and connection of the neutral pin 22 and the neutral spring 17, disconnection and connection of the live pin 24 and the live spring 18, and disconnection and connection of the ground pin 25 and the ground spring 34 are controlled by the reset rotary stopper 5;

and a boss is arranged at the bottom of the ground wire extending end 32, so that when the leakage protector is powered off, the zero line elastic sheet 17 and the live line elastic sheet 18 can be disconnected before the ground wire elastic sheet 34 through the boss.

Example 3:

as shown in fig. 1 and fig. 2, compared with embodiment 1, the electric terminals 8 and the spring plates 7 are embedded on the base 1; an extended indicating rod 14 is further arranged at one end of the reset rotary stop block 5, the indicating rod 14 can rotate along with the reset rotary stop block 5 to display the state of the leakage protector, specifically, the top of the indicating rod 14 is coated with red, when the leakage protector is in a power-on state, the bayonet 12 and the fastening fixture block 16 are kept in a clamping fit state, as shown in fig. 2, namely, the red color at the top of the indicating rod 14 can be seen at an observation window on the shell of the leakage protector, and an indicating effect is achieved; when the earth-leakage protector is in a power-off state, as shown in fig. 1, the red color at the top of the indication rod 14 is not visible at the viewing window on the casing of the earth-leakage protector.

Example 4:

as shown in fig. 6 and 7, compared with embodiment 2, in this embodiment, an auxiliary trip spring 30 is disposed at the bottom of the reset button 4, specifically, the auxiliary trip spring 30 is disposed in the reset rotation block 5, and one end of the auxiliary trip spring 30 abuts against the bottom of the button rod 10, or the auxiliary trip spring 30 is sleeved on the button rod 10, as shown in fig. 12, by the arrangement of the auxiliary trip spring 30, when the electromagnetic driving device is in a power-off state, the auxiliary trip spring 30 can provide a downward acting force for the reset rotation block 5, and the reset rotation block 5 can move downward under the elastic force of the auxiliary trip spring 30, thereby ensuring that the elastic sheet moves downward and is separated from the power-on end to power off.

Example 5:

compared with embodiment 1, in this embodiment, as shown in fig. 10, the bottom of the reset button 4 passes through the reset rotation stopper 5, and the base 1 is provided with the insertion hole 31 corresponding to the bottom of the reset button 4, and the reset button 4 is simultaneously limited by the upper cover plate 3 and the insertion hole 31 on the base 1, so that the reset button 4 is more stable in up-and-down movement, and the situation that the reset button 4 can rock when limited only by the upper cover plate 3 can be avoided.

Example 6:

compared with embodiment 2, in this embodiment, as shown in fig. 3, the bottom of the reset button 4 passes through the reset rotation stopper 5 and the ground wire spring piece 34, the base 1 is provided with the jack 31 corresponding to the bottom of the reset button 4, and the reset button 4 is simultaneously limited by the upper cover plate 3 and the jack 31 on the base 1, so that the reset button 4 can move up and down more stably, and the situation that the reset button 4 shakes when limited only by the upper cover plate 3 does not occur;

In the present embodiment, the ground spring 34 has a spring hole 38 corresponding to the bottom of the reset button 4, and the bottom of the reset button 4 passes through the spring hole 38.

Example 7:

compared with embodiment 2, in this embodiment, an auxiliary ground wire return spring 37 is further disposed between the ground wire elastic piece 34 and the base 1, an upward elastic force can be generated on the ground wire elastic piece 34 by the auxiliary ground wire return spring 37, and the auxiliary ground wire return spring 37 can effectively ensure that the ground wire pin 25 and the ground wire elastic piece 34 are closed.

Example 8:

compared with embodiment 1, in this embodiment, as shown in fig. 11, a reset sliding slot 35 is further disposed at a side portion of the reset key 4, a sliding guide post 29 is further disposed in the reset rotary block 5, the reset sliding slot 35 can be correspondingly matched with the sliding guide post 29, the reset sliding slots 35 are symmetrically disposed at two sides of the key rod 10, the reset sliding slots 35 are disposed upward from a lower end of the key rod 10, the sliding guide post 29 is used for matching up and down movement of the key rod 10, and a sliding slot transition inclined plane 36 is disposed at an upper portion of the reset sliding slot 35, during a process of pressing down the reset key 4, the sliding guide post 29 can first match with the reset sliding slot 35 to slide, and as the reset key 4 continues to be pressed down, the sliding guide post 29 slides out from the reset sliding slot 35, specifically, the sliding guide post 29 slides out along the sliding slot transition inclined plane 36 and abuts against a side surface of the key rod 10, through this abutting effect, the reset rotary block 5 can rotate to a certain angle towards one side of the electromagnetic driving device 6, this preparatory action effectively reduces the power requirements on the solenoid of the electromagnetic drive 6, which ensures that the reset rotation stop 5 is pulled tight by the drive core 23 if the electromagnetic drive 6 is energized, thereby maintaining the entire earth-leakage protector energized.

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 modifications and embellishments can be made without departing from the technical principle of the present invention, and these modifications and embellishments should also be regarded as the protection scope of the present invention.

Claims (16)

1. A rotation-type holding-type earth-leakage protector, characterized in that, the rotation-type holding-type earth-leakage protector comprises: the leakage protection device comprises a base (1), a leakage protection device (2) and an upper cover plate (3), wherein the leakage protection device (2) comprises a reset key (4), a reset rotary stop block (5), an electromagnetic driving device (6) and an elastic sheet (7); the base (1) is also provided with an electric connection end (8) which can be electrically connected with the elastic sheet (7);

the reset rotary stop block (5) is movably arranged at the upper part of the base (1) up and down, and two sides of the reset rotary stop block (5) are provided with extension ends (15) which can be abutted against the elastic sheet (7); the electromagnetic driving device (6) is arranged on one side of the upper portion of the base (1), a driving iron core (23) is arranged on the electromagnetic driving device (6), the driving iron core (23) extends out of the electromagnetic driving device (6) and is movably clamped with the side wall of the reset rotary stop block (5), and the electromagnetic driving device (6) can drive the driving iron core (23) to move so as to drive the reset rotary stop block (5) to rotate;

A fastening clamping block (16) is arranged on the reset rotary stop block (5), a reset spring (11) is sleeved on the reset key (4), one end of the reset spring (11) is abutted against the upper part of the upper cover plate (3), and the other end of the reset spring (11) is abutted against the reset key (4); the reset key (4) penetrates through the upper cover plate (3) and is inserted into the reset rotary stop block (5);

the electromagnetic driving device (6) in a continuous power-on state can enable the driving iron core (23) to continuously tension the reset rotary stop dog (5), the buckling clamping block (16) is continuously clamped with the reset button (4), the reset rotary stop dog (5) is further driven to synchronously move, and the reset button (4) can enable the elastic sheet (7) to be in a power-on state in contact with the power connection end (8) through the reset rotary stop dog (5);

after the electromagnetic driving device (6) in the continuous power-on state loses power, the driving iron core (23) releases the reset rotary stop dog (5), the fastening clamping block (16) and the reset key (4) are separated from the clamping state, and the elastic sheet (7) is separated from the power connection end (8) under the action of self elasticity to cut off the power.

2. A rotary holding type earth-leakage protector according to claim 1, wherein said reset button (4) is provided with a bayonet (12) for snap-fitting with said snap-fit latch (16), said bayonet (12) is provided with an upper snap-fit surface (20) and a lower inclined surface (19) for releasing.

3. A rotation-type holding leakage protector according to claim 2, wherein said reset rotation block (5) has an opening slot (13) on a side wall close to said driving iron core (23), said fastening block (16) is disposed on a side wall opposite to said opening slot (13), and said opening slot (13) is used for fastening said driving iron core (23).

4. A rotary type holding type earth-leakage protector as claimed in claim 1, wherein said base (1) has a sliding groove (26) at the top for inserting said reset rotation block (5) into said base (1) from top to bottom, said reset rotation block (5) can move up and down relative to said sliding groove (26), said reset rotation block (5) can rotate in said sliding groove (26) with said protruding end (15) as the center.

5. A rotary type maintaining earth-leakage protector according to claim 2, characterized in that after the electromagnetic driving device (6) loses power, the driving iron core (23) releases the reset rotary stopper (5), the reset button (4) moves upward under the action of the reset spring (11), and during the upward movement of the reset button (4), the reset rotary stopper (5) slides out along the trip lower inclined plane (19) of the reset button (4) and is disengaged from the reset button (4).

6. A rotary type holding-type earth leakage protector according to claim 1, characterized in that said electric connection terminal (8) is a pin structure comprising a neutral pin (22), a live pin (24) and a ground pin (25), said elastic pieces (7) comprise a neutral elastic piece (17) and a live elastic piece (18), said neutral pin (22) corresponds to said neutral elastic piece (17) in position, said live pin (24) corresponds to said live elastic piece (18) in position, said ground pin (25) is directly connected to ground; the two extending ends (15) are arranged at the lower parts of the zero line elastic sheet (17) and the live line elastic sheet (18), and the zero line elastic sheet (17) and the live line elastic sheet (18) can automatically move downwards under the action of self elasticity.

7. A rotary type holding-type earth leakage protector according to claim 1, characterized in that the electric connection terminal (8) is of pin structure comprising a neutral pin (22), a live pin (24) and a ground pin (25), the resilient pieces (7) comprise a neutral resilient piece (17), a live resilient piece (18) and a ground resilient piece (34), the neutral pin (22) corresponds to the neutral resilient piece (17), the live pin (24) corresponds to the live resilient piece (18), and the ground pin (25) corresponds to the ground resilient piece (34); the two extending ends (15) are arranged at the lower parts of the zero line elastic sheet (17) and the live line elastic sheet (18), and the zero line elastic sheet (17) and the live line elastic sheet (18) can automatically move downwards under the action of self elasticity; the bottom of the reset rotary stop block (5) is provided with a ground wire extension end (32), the ground wire extension end (32) is arranged at the top of the ground wire elastic sheet (34) and used for controlling the ground wire elastic sheet (34) to move downwards, and the ground wire elastic sheet (34) can automatically move upwards under the action of self elasticity.

8. The rotary type maintaining leakage protector as claimed in claim 1, wherein the leakage protector (2) further comprises a pressing guide block, the pressing guide block is clamped on one side of the upper portion of the base (1), and a pressing end for pressing and fixing the electric connection end (8) on the base (1) is arranged on the pressing guide block.

9. A rotary type maintaining leakage protector as claimed in claim 1, wherein the electric terminals (8) and the elastic pieces (7) are embedded in the base (1), and the electric terminals (8) and the elastic pieces (7) are provided with corresponding electric connection contacts (21); and one end of the reset rotary stop block (5) is also provided with an extended indicating rod (14), and the indicating rod (14) can rotate along with the reset rotary stop block (5) to further display the state of the leakage protector.

10. A rotary holding type earth-leakage protector according to claim 1, wherein an auxiliary trip spring (30) is further provided at the bottom of said reset button (4).

11. A rotary type holding-on leakage protector according to claim 6, wherein the bottom of the reset button (4) passes through the reset rotation block (5), and the base (1) is provided with a jack (31) corresponding to the bottom of the reset button (4).

12. A rotary type maintaining leakage protector as claimed in claim 7, wherein the bottom of the reset button (4) passes through the reset rotation stop (5) and the ground spring (34), and the base (1) is provided with a jack (31) corresponding to the bottom of the reset button (4).

13. A rotary type holding type earth-leakage protector according to claim 8, wherein an auxiliary earth return spring (37) is further provided between said earth spring (34) and said base (1).

14. A rotary holding type earth leakage protector according to claim 7, characterized in that the ground extension (32) enables the neutral (17) and live (18) clips to be disconnected before the ground (34) clips.

15. A rotary type maintaining leakage protector as claimed in claim 1, wherein a reset sliding groove (35) is further provided at a side of the reset button (4), a sliding guide pillar (29) is further provided in the reset rotary block (5), and the reset sliding groove (35) can be correspondingly engaged with the sliding guide pillar (29).

16. A rotary type holding-on leakage protector according to claim 16, wherein a chute transition slope (36) is provided on the upper portion of said reset chute (35), and during the process of pressing down said reset button (4), said sliding guide pillar (29) slides along the chute transition slope (36) and abuts against the side of the reset button (4) first, so that the reset rotation block (5) rotates to the side of the electromagnetic driving device (6).

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