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

A rotary maintenance 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 technique

The leakage protector can disconnect the main line in time when the equipment has a leakage fault or needs to protect the person from electric shock with fatal danger, thus being widely used; the application technology of the leakage protector has been very mature, from the protection principle, There are voltage type and current type. From the point of mechanical structure, there are self-locking type and pull-in type, and the leakage protector of mechanical self-locking structure type of current or voltage is usually used. The biggest feature of the mechanical self-locking structure is that when the power supply of the leakage protector in operation is interrupted or the power supply circuit is out of phase and the line contact is poor, the mechanical self-locking structure of the leakage protector in the closed state will not be able to actively close the contacts. At this time, if the power supply circuit is abnormally lacking in phase and the ground wire is abnormally charged or leaks, the leakage protector will lose its protective function, resulting in a safety accident; and the existing leakage protector structure The clips generally use surface The way of contact slides, the friction is large, and the service life of the moving parts is affected;

In view of the above problems, in the present invention, a self-release type rotating structure is designed, which adopts a coil continuous power supply to pull in and release a mechanism. The voltage cannot generate the magnetic force to attract the self-release mechanism, which leads to the disconnection of the release circuit and the disconnection of the closed contact to form active protection, eliminate potential safety hazards, reduce wear between components, and improve service life.

For example, the leakage protector disclosed in Chinese utility model patent CN211907362U includes: a protector device, a pin, a bottom plate and a shrapnel; the protector device includes a communication maintaining device, a communication device and a locking device; the locking device includes a shrapnel pressing block and a locking device The lever; the locking lever is provided with a lock, a movable pressure plate and a hasp slide; the shrapnel pressure block is provided with a pressure lever, a hasp and a vertical fork slot; the communication device is provided with a second iron core extending laterally , the second iron core is snap-fitted with the vertical fork groove; the communication maintaining device is provided with a longitudinally fixed first iron core, the first iron core is adsorbed and matched with the movable pressure plate, and the elastic piece pressing block includes the upper part of the pressing block and the lower part of the pressing block; the The structure of the leakage protector is more complicated and the volume is larger.

SUMMARY OF THE INVENTION

1. Technical problems to be solved

In view of the above-mentioned defects in the prior art, the present invention proposes a rotary maintenance type leakage protector, which solves the problems of complex structure and serious friction between components of the existing leakage protector, and also solves the problems of the existing leakage protector. There is a problem in the leakage protector that the leakage protector can only open the circuit when it is powered on.

2. Technical solutions

In order to solve the above technical problems, the present invention provides a rotary maintenance type leakage protector, which includes: a base, a leakage protection device, and an upper cover, and the leakage protection device includes a reset button, a reset rotary stop, an electromagnetic drive device and a shrapnel; the base; There is also an electrical connection terminal that can be electrically connected to the shrapnel;

The reset rotating block can be installed up and down on the upper part of the base, and the two sides of the reset rotating block are provided with protruding ends that can abut with the shrapnel; the electromagnetic driving device is arranged on one side of the upper part of the base, and a driving iron is arranged on the electromagnetic driving device The core, the driving iron core extends out of the electromagnetic driving device and is movably connected with the side wall of the reset rotating block, and the electromagnetic driving device can drive the driving iron core to move so as to drive the reset rotating block to rotate around the extension end;

The reset rotary block is provided with an inwardly protruding buckle block, the reset button is sleeved with a reset spring, one end of the reset spring is in contact with the upper part of the upper cover, and the other end of the reset spring is in contact with the reset button; the reset button passes through The upper cover is inserted into the reset rotary block, and the reset button can drive the reset rotary block to move synchronously through the buckle block; in the state where the buckle block and the reset button are clamped, pressing the reset button can make the reset rotary block When it moves down, the shrapnel moves down with it, so that the shrapnel is separated from the power connection terminal and the power is cut off. When the reset button is not pressed by external force, the reset button is reset and moved up under the action of the reset spring, and the reset rotating block can drive the shrapnel to move up. And contact with the terminal to energize;

The electromagnetic drive device in the continuous power-on state can make the driving iron core continuously tighten the reset rotating block, and make the buckle block and the reset button continue to be engaged. power-on state;

After the continuous power-on state of the electromagnetic drive device loses power, the driving iron core releases the reset rotating block, the snap-on block and the reset button are released from the snap-on state, and the shrapnel is separated from the power terminal under the action of its own elastic force and power off.

Wherein, the reset button is provided with a bayonet which is snap-fitted with the buckle block, and the bayonet is provided with an upper clamping surface and a tripping lower slope.

A side wall of the reset rotation block close to the driving iron core is provided with an opening slot, and the buckle block is arranged on a side wall opposite to the opening slot, and the opening slot is used for engaging with the driving iron core.

Among them, the top of the base is provided with a sliding groove that can insert and install the reset rotary block into the base from top to bottom, the reset rotary block can move up and down relative to the sliding groove, and the reset rotary block can also extend out of the shaft center Rotate in the sliding slot.

Among them, after the electromagnetic drive device loses power, the driving iron core releases the reset rotary block, and the reset button moves upward under the action of the reset spring. During the upward movement of the reset button, the reset rotary block slides out along the lower slope of the reset button's tripping. And get out of the card connection state with the reset button.

Among them, the electrical connection terminal is a pin structure, including a neutral wire pin, a live wire pin and a ground wire pin, the shrapnel includes a neutral wire shrapnel and a live wire shrapnel, the neutral wire pin corresponds to the position of the neutral wire shrapnel, and the live wire pin corresponds to the position of the live wire shrapnel. The ground wire pin is directly connected to the ground wire; the two extension ends are arranged at the lower part of the neutral wire shrapnel and the live wire shrapnel, and the neutral wire shrapnel and the live wire shrapnel can both automatically move downward under the action of their own elastic force.

Among them, the electrical connection terminal is a pin structure, including the neutral line pin, the live line pin and the ground line pin. The shrapnel includes the neutral line shrapnel, the live line shrapnel and the ground line shrapnel. The neutral line pin corresponds to the position of the neutral line shrapnel. Corresponding positions, the ground wire pin corresponds to the position of the ground wire shrapnel; the two protruding ends are set at the lower part of the neutral wire shrapnel and the live wire shrapnel, and the neutral wire shrapnel and the live wire shrapnel can be automatically displaced downward under the action of their own elastic force; reset The bottom of the rotating block is provided with an extension end of the ground wire, and the extension end of the ground wire is arranged on the top of the ground wire shrapnel to control the downward movement of the ground wire shrapnel, and the ground wire shrapnel can automatically move upward under the action of its own elastic force.

Wherein, the leakage protection device further includes a pressing guide block, which is clamped and arranged on one side of the upper part of the base, and the pressing guide block is provided with a pressing end for pressing and fixing the electric terminal on the base.

Among them, the electric terminal and the shrapnel are embedded on the base; the electric terminal and the shrapnel are both provided with corresponding electrical connection contacts, and one end of the reset rotating block is also provided with a protruding indicator rod, and the indicating rod can follow the reset rotary block. The block rotates to display the status of the residual current protector.

The bottom of the reset button passes through the reset rotation block, and the base is provided with a socket corresponding to the bottom of the reset button.

The bottom of the reset button passes through the reset rotating block and the ground wire shrapnel, and the base is provided with a socket corresponding to the bottom of the reset button.

Among them, an auxiliary ground return spring is also arranged between the ground wire shrapnel and the base.

Wherein, an auxiliary tripping spring is arranged between the bottom of the reset button and the bottom of the reset rotation block.

Wherein, the extension end of the ground wire can make the neutral wire shrapnel and the live wire shrapnel disconnect before the ground wire shrapnel.

Among them, the reset button side is also provided with a reset chute, and the reset rotary block is also provided with a sliding guide post, and the reset chute can be matched with the sliding guide post.

Among them, the upper part of the reset chute is provided with a chute transition slope. During the pressing process of the reset button, the sliding guide post first slides in cooperation with the reset chute, and then slides out along the transition slope of the chute and abuts the side of the reset button, so that the reset rotates. The stopper rotates to the side of the electromagnetic drive.

3. Beneficial effects

Compared with the prior art, the present invention provides a rotary maintenance-type leakage protector, which maintains the closed state of the leakage protector by continuously supplying power to the electromagnetic drive device, pulling in and snapping. When the power supply is interrupted, the contact is poor, and the phase is missing, the electromagnetic drive device cannot generate magnetic force due to the loss of voltage, so that the clamping structure between the bayonet and the reset rotating block is not clamped, so that the reset button and the reset block cannot be linked. The separation state, so that the leakage protector is separated and powered off, forming active protection and eliminating potential safety hazards;

At the same time, through the setting of the rotatable reset and rotating block, the wear between the components is effectively reduced, the service life is improved, and the overall sensitivity of the mechanism is greatly improved;

At the same time, through the setting of the auxiliary tripping spring, when the electromagnetic drive device is de-energized, the reset rotating block can move downward under the elastic force of the auxiliary tripping spring, so as to ensure that the shrapnel moves downward and separates from the power connection terminal. Power off.

Description of drawings

Fig. 1 is the perspective view of the disconnected state of the leakage protector of the present invention;

Fig. 2 is the perspective view of the closed state of the leakage protector of the present invention;

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

4 is a perspective view of a reset rotating block of the leakage protector of the present invention;

Fig. 5 is the sectional view of the leakage protector of the present invention;

Fig. 6 is the internal structure Fig. 1 of the ground wire shrapnel of the present invention;

Fig. 7 is the internal structure Fig. 2 of the ground wire shrapnel of the present invention;

Fig. 8 is the internal structure Fig. 1 of the non-ground wire shrapnel of the present invention;

Fig. 9 is the internal structure Fig. 2 of the non-ground wire shrapnel of the present invention;

Fig. 10 is the base structure diagram of the ground wire shrapnel of the present invention;

Fig. 11 is the structure diagram of the reset button of the present invention;

Figure 12 is a structural diagram of the present invention in which the auxiliary tripping spring is sleeved on the key lever;

In the figure: 1 is the base; 2 is the leakage protection device; 3 is the upper cover; 4 is the reset button; 5 is the reset rotary stop; 6 is the electromagnetic drive device; 7 is the shrapnel; Button; 10 is the key lever; 11 is the return spring; 12 is the bayonet; 13 is the opening slot; 14 is the indicator rod; 15 is the extension end; ; 19 is the lower slope of the tripping; 20 is the upper clamping surface; 21 is the electrical connection contact; 22 is the zero line pin; 23 is the driving iron core; 24 is the live line pin; 27 is the electromagnetic coil; 29 is the sliding guide post; 30 is the auxiliary tripping spring; 31 is the jack; 32 is the extension end of the ground wire; 33 is the static iron core; It is the transition slope of the chute; 37 is the auxiliary ground return spring; 38 is the shrapnel hole.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

Example 1:

A rotary maintenance type leakage protector according to an embodiment of the present invention, as shown in Figures 1 to 9, includes: a base 1, a leakage protection device 2, and an upper cover 3. The leakage protection device 2 includes a reset button 4, a reset rotation The stopper 5, the electromagnetic drive device 6 and the shrapnel 7; the base 1 is also provided with an electrical connection terminal 8 that can be electrically connected to the shrapnel 7. In this embodiment, the upper cover 3 can be used only to support the following return spring 11. The partition board of plastic or other materials can also play the same role by using circuit boards; the leakage protection device 2 also includes a pressing guide block, which is clamped and arranged on one side of the upper part of the base 1 to press The tightening guide block is positioned and fixed through the corresponding clamping grooves on the base 1, and the tightening guide block is provided with a pressing end for pressing and fixing the electrical connection end 8 on the base 1;

The reset rotary block 5 can be installed on the upper part of the base 1 movably up and down. The top of the base 1 is provided with a sliding groove 26 that can accommodate the reset rotary block 5 to be inserted into the base 1 from top to bottom, and the reset rotary block 5 passes through. The extension ends 15 on both sides are engaged with the sliding groove 26, and the cylindrical reset rotation block 5 can use the extension end 15 as the axis to rotate in the sliding groove 26, and move the extension end 15 up and down. Control the contact and separation of the shrapnel 7 and the power connection terminal 8, that is, the power-on and power-off of the leakage protector;

The electromagnetic driving device 6 is arranged on one side of the upper part of the base 1, and a movable driving iron core 23 is arranged in the electromagnetic driving device 6. The protruding end of the driving iron core 23 is movably clamped to the side wall of the reset rotating block 5, as shown in the figure. 4. As shown in FIG. 5 and FIG. 6, an opening slot 13 is provided on one side wall of the reset rotary block 5 close to the driving iron core 23, and the buckle block 16 is arranged on a side wall opposite to the opening slot 13, The opening slot 13 is used for snap-fit with the driving iron core 23. When the electromagnetic driving device 6 is powered on, as shown in FIG. 2 and FIG. ;

The reset button 4 includes a button button 9 and a button lever 10. As shown in FIG. 1, the button lever 10 is sleeved with a reset spring 11, one end of the reset spring 11 is in contact with the upper part of the upper cover 3, and the other end of the reset spring 11 is connected with the reset button. 4 abuts; the reset button 4 is inserted into the reset rotation block 5 through the upper cover 3, the button lever 10 is provided with a bayonet 12 that is snap-fitted with the buckle block 16, and the bayonet 12 is provided with an upper snap The surface 20 and the lower tripping slope 19, the shape of the bayonet 12 is similar to the "7"-shaped opening;

When the leakage protector is in the initial state of no electricity, the electromagnetic driving device 6 does not work, the driving iron core 23 is in a free state without magnetic adsorption, and there is no force restraint on the reset rotary block 5, and the reset rotary block 5 is buckled. The clamping block 16 and the reset button 4 are released from the clamping state, and the shrapnel 7 is separated from the power connection terminal 8 under the action of its own elastic force. At this time, pressing the reset button 4 compresses the reset spring 11 or the reset button 4 resets upward, and neither will drive the reset rotary block. block 5 movement;

When the leakage protector is energized, as shown in FIG. 5 , the electromagnetic drive device 6 is in a continuously energized state to generate a magnetic force and attract the driving iron core 23 , and the reset rotating block 5 is continuously tightened by the driving iron core 23 . The clamping block 16 is kept in clamping connection with the bayonet 12. In this state, the up and down movement of the reset button 4 will also simultaneously drive the reset rotary block 5 to move;

When the leakage protector is powered off, that is, when the leakage protector encounters unexpected situations such as power interruption, poor contact, phase loss, leakage, etc., the electromagnetic drive device 6 loses power, and the driving iron core 23 releases the reset rotary block 5 and resets The latching block 16 of the rotating block 5 and the reset button 4 are released from the latched state, and the elastic sheet 7 is separated from the power connection terminal 8 under the action of its own elastic force. At this time, the reset spring 11 drives the reset button 4 to reset upward.

Further, the reset button 4 will move upward under the action of the reset spring 11. During the upward movement of the reset button 4, the reset rotary block 5 loses the pulling force exerted by the driving iron core 23 on it, and the buckle block 16 will reset along the reset direction. The tripping lower slope 19 of the button 4 slides out and is released from the clamping state with the reset button 4. In this state, the reset button 4 and the reset rotary block 5 are in a separated state, and the elastic piece 7 is driven by its own elastic force. The reset rotary block 5 moves downward and separates from the power connection terminal 8 to cut off the power.

The larger the inclination angle of the lower tripping slope 19 is, the easier it is for the buckle block 16 to slide out from the lower tripping slope 19. Therefore, the larger the inclination angle is, the greater the maintenance force of the driving iron core 23 is required, wherein the inclination angle is defined as The acute angle between the tripping lower slope 19 and the horizontal plane.

Through the above-mentioned structural design, the present embodiment adopts the method of continuously supplying power to the electromagnetic drive device 6, engaging and engaging, so that when the leakage protector encounters power interruption, poor contact, phase loss, or leakage, the electromagnetic drive device 6 loses voltage due to The magnetic force cannot be generated, so that the clamping structure of the bayonet 12 and the buckle block 16 is not clamped, so that the reset button 4 and the reset rotation block 5 are in a separated state, so that the leakage protector is separated and the power is cut off to form an active state. protection to prevent potential safety hazards.

As shown in FIGS. 8 and 9 , the electrical connection terminal 8 is a pin structure, including a neutral line pin 22, a live line pin 24 and a ground line pin 25, the shrapnel 7 includes a neutral line shrapnel 17 and a live line shrapnel 18, and the neutral line pin 22 is connected with the zero line The position of the wire shrapnel 17 corresponds to the position of the live wire shrapnel 18, the ground wire pin 25 is directly connected to the ground wire; the two protruding ends 15 are arranged at the lower part of the neutral wire shrapnel 17 and the live wire shrapnel 18, and the neutral wire Both the shrapnel 17 and the live wire shrapnel 18 can be automatically displaced downward under the action of their own elastic force, and corresponding electrical connection contacts 21 are provided on both the electrical terminal 8 and the shrapnel 7, which can be used to ensure stable and reliable electrical connection.

This embodiment can achieve the effect of two-pole breaking, that is, the neutral wire pin 22 corresponds to the neutral wire shrapnel 17, the live wire pin 24 corresponds to the live wire shrapnel 18, and the two-pole breaking refers to the control of the neutral wire pin 22 and the The disconnection and closing of the neutral wire shrapnel 17, the disconnection and closing of the live wire pin 24 and the live wire shrapnel 18.

Example 2:

Compared with Embodiment 1, in this embodiment, as shown in FIG. 6 and FIG. 7 , the electrical connection terminal 8 is a pin structure, including a neutral line pin 22 , a live line pin 24 and a ground line pin 25 , and the shrapnel 7 includes a neutral line shrapnel. 17. The live wire shrapnel 18 and the ground wire shrapnel 34, the neutral wire pin 22 corresponds to the position of the neutral wire shrapnel 17, the live wire pin 24 corresponds to the position of the live wire shrapnel 18, and the ground wire pin 25 corresponds to the position of the ground wire shrapnel 34; two The extension end 15 is arranged at the lower part of the zero wire shrapnel 17 and the live wire shrapnel 18, and the neutral wire shrapnel 17 and the live wire shrapnel 18 can be automatically displaced downward under the action of their own elastic force; the bottom of the reset rotating block 5 is provided with a ground wire extension end 32. The extension end 32 of the ground wire is arranged on the top of the ground wire shrapnel 34 to control the downward movement of the ground wire shrapnel 34, and the ground wire shrapnel 34 can automatically move upward under the action of its own elastic force; There are corresponding electrical connection contacts 21, which can be used to ensure stable and reliable electrical connection;

This embodiment can achieve the effect of three-pole breaking, that is, the ground wire pin 25 corresponds to the ground wire shrapnel 34, the neutral wire pin 22 corresponds to the neutral wire shrapnel 17, the live wire pin 24 corresponds to the live wire shrapnel 18, and the three-pole break is Refers to can control the opening and closing of the above three, by resetting the rotating block 5 to control the disconnection and closing of the zero line pin 22 and the zero line shrapnel 17, and the disconnection and closing of the live line pin 24 and the live line shrapnel 18, and at the same time realize Control the opening and closing of the ground pin 25 and the ground spring 34;

A boss is provided at the bottom of the ground wire extension end 32 . When the leakage protector is powered off, the neutral wire shrapnel 17 and the live wire shrapnel 18 can be disconnected before the ground wire shrapnel 34 through the configuration of the boss.

Example 3:

As shown in FIG. 1 and FIG. 2 , compared with Embodiment 1, the power connection terminal 8 and the elastic piece 7 are embedded on the base 1 ; one end of the reset rotating block 5 is also provided with a protruding indicator rod 14 , and the indicator rod 14 can be When the reset rotating block 5 rotates, the state of the leakage protector is displayed. Specifically, the top of the indicator rod 14 is painted in red. When the leakage protector is powered on, the bayonet 12 and the buckle block 16 are kept in a snap-fit state. , as shown in Figure 2, that is, at this time, the red top of the indicator rod 14 can be seen at the observation window on the casing of the leakage protector, which plays an indicating role; when the leakage protector is in a power-off state, as shown in Figure 1 , the red color on the top of the indicator rod 14 cannot be seen at the observation window on the casing of the leakage protector.

Example 4:

As shown in FIGS. 6 and 7 , compared with Embodiment 2, in this embodiment, an auxiliary tripping spring 30 is provided at the bottom of the reset button 4 . Specifically, the auxiliary tripping spring 30 is arranged in the reset rotating block 5 , and one end is in contact with the bottom of the button lever 10, or the auxiliary tripping spring 30 is sleeved on the button lever 10, as shown in FIG. The auxiliary trip spring 30 can provide a downward force for the reset rotary block 5, and the reset rotary block 5 can move downward under the elastic force of the auxiliary trip spring 30, thereby ensuring that the shrapnel moves downward and is connected to the power connection. The terminals are separated and powered 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 rotary stopper 5 , and a socket 31 corresponding to the bottom of the reset button 4 is provided on the base 1 , and the reset button 4 is reset. The button 4 is limited by the upper cover 3 and the jack 31 on the base 1 at the same time, which can make the reset button 4 more stable when moving up and down, and the reset button 4 will not shake when only limited by the upper cover 3. Happening.

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 rotary block 5 and the ground wire spring 34 , and the base 1 is provided with a socket corresponding to the bottom of the reset button 4 31. The reset button 4 is limited by the upper cover 3 and the jack 31 on the base 1 at the same time, which can make the reset button 4 more stable when moving up and down. wobbly;

In this embodiment, the ground wire spring 34 is provided with 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 provided between the ground wire spring piece 34 and the base 1 , and an upward elastic force can be generated on the ground wire spring piece 34 through the auxiliary ground wire return spring 37 . The auxiliary ground return spring 37 can effectively ensure the closure between the ground pin 25 and the ground spring 34 .

Example 8:

Compared with Embodiment 1, in this embodiment, as shown in FIG. 11 , a reset chute 35 is further provided on the side of the reset button 4 , and a sliding guide post 29 is also provided in the reset rotating block 5 . Correspondingly cooperate with the sliding guide post 29, the reset chute 35 is symmetrically arranged on both sides of the key lever 10, the reset chute 35 is set upward from the lower end of the key lever 10, and the sliding guide post 29 is used to cooperate with the up and down movement of the key lever 10, and in the The upper part of the reset chute 35 is provided with a chute transition slope 36. During the pressing process of the reset button 4, the sliding guide post 29 can first cooperate with the reset chute 35 to slide. The sliding groove 35 slides out. Specifically, the sliding guide post 29 slides out along the sliding groove transition slope 36 and abuts with the side surface of the key lever 10 without the sliding groove. One side of the electromagnetic drive device 6 rotates at a certain angle, and this preparatory action can effectively reduce the power requirement of the electromagnetic coil on the electromagnetic drive device 6. At this time, if the electromagnetic drive device 6 is powered on, it can ensure that the rotating block 5 will be reset by driving the iron core 23. Tighten, so that the entire leakage protector remains energized.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and modifications can also be made, and these improvements and modifications should also be It is 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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