A rotary maintaining type leakage protector

Abstract

The invention discloses a rotary maintained leakage protector, which relates to the technical field of leakage protectors, and comprises: a base, a leakage protection device, and an upper cover plate, wherein the leakage protection device comprises a reset button, a reset rotating block, an electromagnetic driving device and a spring; the base is also provided with a power connection end which can be electrically connected to the spring; both sides of the reset rotating block are provided with protruding ends which can abut against the spring; the electromagnetic driving device is arranged on one side of the upper part of the base, and 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 rotating block to rotate around the protruding end; the reset rotating block is provided with a buckling block protruding inwardly, and the reset button drives the reset rotating block to move synchronously through the buckling block; when the buckling block is in a state of being buckled with the reset button, the invention can form active protection and eliminate safety hazards, and through the arrangement of the rotatable reset rotating block, the wear between the components is reduced, and the overall sensitivity of the mechanism is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of leakage protectors, in particular to a rotary maintaining type leakage protector. Background Art

[0002] The leakage protector is widely used because it can disconnect the main line in time when a leakage fault occurs in the equipment or when it is necessary to protect people from fatal electric shock. The application technology of the leakage protector is very mature. From the protection principle, there are voltage type and current type. From the mechanical structure, there are self-locking type and pull-in type, and the leakage protector with mechanical self-locking structure 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 missing a 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 disconnect the closed contacts. At this time, if the power supply circuit is abnormally missing a phase and the ground wire is abnormally energized or leaking, the leakage protector will lose its protective function, resulting in a safety accident. In addition, the snap-on pieces of the existing leakage protector structure generally slide in a surface contact manner, which has a large friction force and affects the service life of the moving parts.

[0003] In view of the above problems, in the present invention, a self-release rotating structure is designed, which adopts a coil to continuously power the suction and release mechanism. When encountering power interruption, poor contact or phase loss, the suction and holding circuit of the structure loses voltage and cannot generate magnetic force to attract the self-release mechanism, resulting in the disconnection of the release circuit and the disconnection of the closed contacts, thereby forming active protection, eliminating safety hazards, reducing wear between components and increasing service life.

[0004] For example, the leakage protector disclosed in Chinese utility model patent CN211907362U includes: a protector device, a pin, a base plate and a spring; the protector device includes a connection maintaining device, a connection device and a locking device; the locking device includes a spring pressure block and a locking lever; the locking lever is provided with a lock, a movable pressure plate and a buckle slide; the spring pressure block is provided with a pressure rod, a buckle and a vertical fork groove; the connection device is provided with a second iron core extending laterally, and the second iron core is engaged with the vertical fork groove; the connection maintaining device is provided with a first iron core fixed longitudinally, and the first iron core is adsorbed and engaged with the movable pressure plate, and the spring pressure block includes an upper pressure block and a lower pressure block; the structure of the leakage protector is relatively complex and the volume is larger. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The present invention is aimed at the above-mentioned defects existing in the prior art, and specially proposes a rotary maintaining type leakage protector, which solves the problems of complex structure and serious friction between components existing in the prior leakage protector, and also solves the problem that the leakage protector can only break the circuit when power is on.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the present invention provides a rotary maintenance type leakage protector, comprising: a base, a leakage protection device, and an upper cover plate, wherein the leakage protection device comprises a reset button, a reset rotation block, an electromagnetic drive device, and a spring; the base is also provided with an electric terminal that can be electrically connected to the spring;

[0009] The reset rotating block can be movably mounted on the upper part of the base, and the two sides of the reset rotating block are provided with protruding ends that can abut against the spring sheet; the electromagnetic driving device is arranged on one side of the upper part of the base, and the electromagnetic driving device is provided with a driving iron core, which protrudes out of the electromagnetic driving device and is movably engaged with the side wall of the reset rotating block, and the electromagnetic driving device can drive the driving iron core to move, thereby driving the reset rotating block to rotate around the protruding end;

[0010] The reset rotary block is provided with an inwardly protruding snap-on block, and the reset button is sleeved with a reset spring, one end of the reset spring abuts against the upper part of the upper cover plate, and the other end of the reset spring abuts against the reset button; the reset button passes through the upper cover plate and is inserted into the reset rotary block, and the reset button can drive the reset rotary block to move synchronously through the snap-on block; when the snap-on block and the reset button are snapped, pressing the reset button can cause the reset rotary block to move downward, and the spring piece moves downward accordingly, so that the spring piece is separated from the power connection end and the power is cut off; when the reset button is not pressed by external force, the reset button resets and moves upward under the action of the reset spring, and the reset rotary block can drive the spring piece to move upward and contact the power connection end to be energized;

[0011] The electromagnetic drive device in the continuously powered state can make the driving iron core continuously tighten the reset rotating block, and make the buckle block and the reset button continuously engaged, and the reset button can keep the spring piece in contact with the power connection end through the reset rotating block.

[0012] After the electromagnetic drive device in the continuously energized state loses power, the driving iron core releases the reset rotating block, the buckling block and the reset button are disengaged, and the spring is separated from the power supply terminal under its own elastic force to cut off the power.

[0013] The reset button is provided with a bayonet which is engaged with the buckle block, and the bayonet is provided with an upper clamping surface and a lower inclined surface for disengaging.

[0014] An opening slot is provided on a side wall of the reset rotation stopper close to the driving iron core, and a snap-on block is arranged on a side wall opposite to the opening slot, and the opening slot is used for snapping with the driving iron core.

[0015] The top of the base is provided with a sliding groove for inserting the reset rotary stopper from top to bottom and installing it in the base. The reset rotary stopper can move up and down relative to the sliding groove, and the reset rotary stopper can also rotate in the sliding groove with the extended end as the axis.

[0016] Among them, after the electromagnetic drive device loses power, the driving iron core releases the reset rotating block, and the reset button moves upward under the action of the reset spring. During the upward movement of the reset button, the reset rotating block slides out along the lower inclined surface of the reset button and disengages from the reset button.

[0017] Among them, the power connecting end is a pin structure, including a neutral wire pin, a live wire pin and a ground wire pin, the spring clip includes a neutral wire spring clip and a live wire spring clip, the neutral wire pin corresponds to the position of the neutral wire spring clip, the live wire pin corresponds to the position of the live wire spring clip, and the ground wire pin is directly connected to the ground wire; the two protruding ends are arranged at the bottom of the neutral wire spring clip and the live wire spring clip, and the neutral wire spring clip and the live wire spring clip can automatically move downward under the action of their own elastic force.

[0018] Among them, the power connection end 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, a live wire shrapnel and a ground wire shrapnel, the neutral wire pin corresponds to the position of the neutral wire shrapnel, the live wire pin corresponds to the position of the live wire shrapnel, and the ground wire pin corresponds to the position of the ground wire shrapnel; the two protruding 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 be automatically displaced downward under the action of their own elastic force; the ground wire protruding end is provided at the bottom of the reset rotating block, and the ground wire protruding end is arranged at the top of the ground wire shrapnel for controlling the downward movement of the ground wire shrapnel, and the ground wire shrapnel can be automatically displaced upward under the action of its own elastic force.

[0019] The leakage protection device further comprises a clamping guide block which is clamped on one side of the upper part of the base, and a clamping end for clamping and fixing the power connection end on the base is provided on the clamping guide block.

[0020] Among them, the power connection terminal and the spring piece are embedded in the base; the power connection terminal and the spring piece are provided with corresponding electrical connection contacts, and an extended indicator rod is also provided at one end of the reset rotating block, which can rotate with the reset rotating block to display the status of the leakage protector.

[0021] The bottom of the reset button passes through the reset rotating block, and the base is provided with a socket corresponding to the bottom of the reset button.

[0022] The bottom of the reset button passes through the reset rotating block and the ground wire spring, and the base is provided with a socket corresponding to the bottom of the reset button.

[0023] Wherein, an auxiliary ground wire reset spring is also arranged between the ground wire spring piece and the base.

[0024] Wherein, an auxiliary tripping spring is arranged between the bottom of the reset button and the bottom of the reset rotating block.

[0025] The extended end of the ground wire can cause the neutral wire spring piece and the live wire spring piece to be disconnected before the ground wire spring piece.

[0026] Among them, a reset slide groove is also provided on the side of the reset button, and a sliding guide column is also provided in the reset rotating block, and the reset slide groove can correspond to the sliding guide column.

[0027] Among them, a slide groove transition slope is provided on the upper part of the reset slide groove. When the reset button is pressed down, the sliding guide column first slides in cooperation with the reset slide groove, and then slides out along the slide groove transition slope and abuts against the side of the reset button, so that the reset rotating block rotates toward the side of the electromagnetic drive device.

[0028] 3. Beneficial Effects

[0029] 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 to attract and engage. When the leakage protector encounters power interruption, poor contact, or phase loss, the electromagnetic drive device cannot generate magnetic force due to the loss of voltage, so that the engaging structure of the bayonet and the reset rotating block is no longer engaged, and the reset button and the reset block are in a separated state where they cannot be linked, so that the leakage protector is separated and the power is cut off, forming active protection and eliminating safety hazards.

[0030] At the same time, the setting of the rotatable reset rotary stopper can effectively reduce the wear between the components, increase the service life, and greatly improve the overall sensitivity of the mechanism;

[0031] At the same time, through the setting of the auxiliary trip spring, when the electromagnetic drive device is in a power-off state, the reset rotary block can move downward under the elastic force of the auxiliary trip spring, thereby ensuring that the spring piece moves downward and separates from the power terminal to cut off the power. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of the leakage protector of the present invention in a disconnected state;

[0033] Figure 2 It is a three-dimensional diagram of the closed state of the leakage protector of the present invention;

[0034] Figure 3 A three-dimensional diagram of the internal structure of the leakage protector of the present invention;

[0035] Figure 4 A three-dimensional diagram of a reset rotating block of the leakage protector of the present invention;

[0036] Figure 5 is a cross-sectional view of the leakage protector of the present invention;

[0037] Figure 6 The internal structure of the ground wire spring of the present invention Figure 1 ;

[0038] Figure 7 The internal structure of the ground wire spring of the present invention Figure 2 ;

[0039] Figure 8 The internal structure of the ground wire-free spring of the present invention Figure 1 ;

[0040] Fig. 9 The internal structure of the ground wire-free spring of the present invention Figure 2 ;

[0041] Fig.10 This is a structural diagram of a base without a ground wire spring in the present invention;

[0042] Fig.11 This is a structural diagram of the reset button of the present invention;

[0043] Fig.12 This is a structural diagram of the auxiliary release spring sleeved on the button rod of the present invention;

[0044] 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 rotating block; 6 is the electromagnetic drive device; 7 is the spring; 8 is the power connection end; 9 is the key button; 10 is the key rod; 11 is the reset spring; 12 is the bayonet; 13 is the opening slot; 14 is the indicator rod; 15 is the extended end; 16 is the buckle block; 17 is the neutral wire spring; 18 is the live wire spring; 19 is the trip lower slope; 20 is the upper card 21 is the electrical connection contact; 22 is the neutral pin; 23 is the driving iron core; 24 is the live pin; 25 is the ground pin; 26 is the sliding groove; 27 is the electromagnetic coil; 29 is the sliding guide column; 30 is the auxiliary trip spring; 31 is the jack; 32 is the ground extension end; 33 is the static iron core; 34 is the ground spring; 35 is the reset slide groove; 36 is the slide groove transition slope; 37 is the auxiliary ground reset spring; 38 is the spring hole. DETAILED DESCRIPTION

[0045] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0046] Embodiment 1:

[0047] A rotary maintenance type leakage protector according to an embodiment of the present invention, such as Figures 1 to 9As shown, it 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 rotating block 5, an electromagnetic drive device 6 and a spring 7; the base 1 is also provided with an electric terminal 8 that can be electrically connected to the spring 7. In this embodiment, the upper cover 3 can be a partition made of plastic or other materials that only supports the reset spring 11 described below, or can play the same role by using a circuit board; 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. The pressing guide block is positioned and fixed by a clamping groove corresponding to the base 1, and the pressing guide block is provided with a pressing end for clamping and fixing the electric terminal 8 on the base 1;

[0048] The reset rotary stopper 5 is movably installed on the upper part of the base 1. A sliding groove 26 is provided on the top of the base 1 to accommodate the reset rotary stopper 5 to be inserted into the base 1 from top to bottom. The reset rotary stopper 5 is engaged with the sliding groove 26 through the protruding ends 15 on both sides, and the cylindrical reset rotary stopper 5 can rotate in the sliding groove 26 with the protruding end 15 as the axis, and the contact and separation of the spring piece 7 and the power connection end 8 are controlled by the up and down movement of the protruding end 15, that is, the power on and off of the leakage protector;

[0049] The electromagnetic drive device 6 is arranged on one side of the upper part of the base 1. A movable driving iron core 23 is arranged in the electromagnetic drive device 6. The extended end of the driving iron core 23 is movably engaged with the side wall of the reset rotating block 5. Figure 4 , Figure 5 and Figure 6 As shown, an opening slot 13 is provided on one side wall of the reset rotation block 5 close to the driving iron core 23, and a snap-on block 16 is provided on the side wall opposite to the opening slot 13. The opening slot 13 is used to snap-fit ​​with the driving iron core 23. When the electromagnetic drive device 6 is powered on, Figure 2 and Figure 5 As shown, the driving iron core 23 is absorbed, tightened and fixed by the static iron core 33 inside the electromagnetic driving device 6;

[0050] The reset button 4 includes a button 9 and a button rod 10. Figure 1 As shown, a reset spring 11 is sleeved on the button rod 10, one end of the reset spring 11 abuts against the upper part of the upper cover plate 3, and the other end of the reset spring 11 abuts against the reset button 4; the reset button 4 passes through the upper cover plate 3 and is inserted into the reset rotation block 5, and a bayonet 12 for engaging with the buckle block 16 is provided on the button rod 10, and an upper clamping surface 20 and a lower tripping inclined surface 19 are provided on the bayonet 12, and the shape of the bayonet 12 is similar to a "7"-shaped opening;

[0051] When the leakage protector is in the initial state without electricity, the electromagnetic drive device 6 does not work, the driving iron core 23 is in a free state without magnetic attraction, and there is no force constraint on the reset rotating block 5. The buckle block 16 of the reset rotating block 5 is out of the clamping state with the reset button 4, and the spring 7 is separated from the power terminal 8 under the action of its own elastic force. At this time, pressing the reset button 4 downward to compress the reset spring 11 or resetting the reset button 4 upward will not drive the reset rotating block 5 to move;

[0052] When the leakage protector is energized, Figure 5 As shown, the electromagnetic drive device 6 is in a continuously powered state to generate magnetic force and adsorb the driving iron core 23, and the reset rotating block 5 is continuously tightened by the driving iron core 23. At this time, the buckle block 16 and the bayonet 12 remain engaged. In this state, the up and down movement of the reset button 4 will also synchronously drive the reset rotating block 5 to move;

[0053] 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 rotating block 5. The buckling block 16 of the reset rotating block 5 is disengaged from the reset button 4, and the spring 7 is separated from the power 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.

[0054] Furthermore, 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 rotating block 5 loses the pulling force applied to it by the driving iron core 23, and the engaging block 16 will slide out along the lower disengaging slope 19 of the reset button 4 and disengage from the engaging state with the reset button 4. In this state, the reset button 4 and the reset rotating block 5 are in a separated state. At this time, the spring piece 7 drives the reset rotating block 5 to move downward under the action of its own elastic force and separates from the power terminal 8 to cut off the power.

[0055] The larger the inclination angle of the lower tripping slope 19, the easier it is for the snap-on block 16 to slide out of the lower tripping slope 19. Therefore, the larger the inclination angle, the greater the required maintaining force of the driving core 23, where the inclination angle is defined as the acute angle between the lower tripping slope 19 and the horizontal plane.

[0056] Through the above-mentioned structural design, the present embodiment adopts the method of continuous power supply and attraction of the electromagnetic drive device 6, so that when the leakage protector encounters power interruption, poor contact, phase loss, or leakage, the electromagnetic drive device 6 cannot generate magnetic force due to the loss of voltage, so that the card connection structure of the bayonet 12 and the buckle card block 16 is no longer engaged, and the reset button 4 and the reset rotating block 5 are in a separated state, so that the leakage protector is separated and the power is cut off to form active protection, thereby eliminating safety hazards.

[0057] like Figure 8 and Fig. 9 As shown, the power terminal 8 is a pin structure, including a neutral wire pin 22, a live wire pin 24 and a ground wire pin 25, the spring clip 7 includes a neutral wire spring clip 17 and a live wire spring clip 18, the neutral wire pin 22 corresponds to the position of the neutral wire spring clip 17, the live wire pin 24 corresponds to the position of the live wire spring clip 18, and 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 spring clip 17 and the live wire spring clip 18, the neutral wire spring clip 17 and the live wire spring clip 18 can be automatically displaced downward under the action of their own elastic force, and corresponding electrical connection contacts 21 are provided on the power terminal 8 and the spring clip 7, which can be used to ensure stable and reliable electrical connection.

[0058] This embodiment can achieve the effect of two-pole disconnection, that is, the neutral wire pin 22 corresponds to the neutral wire spring piece 17, and the live wire pin 24 corresponds to the live wire spring piece 18. The two-pole disconnection refers to controlling the disconnection and closing of the neutral wire pin 22 and the neutral wire spring piece 17, and the disconnection and closing of the live wire pin 24 and the live wire spring piece 18 by resetting the rotating block 5.

[0059] Embodiment 2:

[0060] Compared with Example 1, in this embodiment, Figure 6 and Figure 7 As shown, the power terminal 8 is a pin structure, including a neutral wire pin 22, a live wire pin 24 and a ground wire pin 25, the spring piece 7 includes a neutral wire spring piece 17, a live wire spring piece 18 and a ground wire spring piece 34, the neutral wire pin 22 corresponds to the position of the neutral wire spring piece 17, the live wire pin 24 corresponds to the position of the live wire spring piece 18, and the ground wire pin 25 corresponds to the position of the ground wire spring piece 34; the two protruding ends 15 are arranged at the lower part of the neutral wire spring piece 17 and the live wire spring piece 18, and the neutral wire spring piece 17 and the live wire spring piece 18 can automatically move downward under the action of their own elastic force; the bottom of the reset rotary block 5 is provided with a ground wire protruding end 32, and the ground wire protruding end 32 is arranged on the top of the ground wire spring piece 34 to control the ground wire spring piece 34 to move downward, and the ground wire spring piece 34 can automatically move upward under the action of its own elastic force, and the power terminal 8 and the spring piece 7 are provided with corresponding electrical connection contacts 21, which can be used to ensure the stability and reliability of the electrical connection;

[0061] This embodiment can achieve the effect of three-pole disconnection, that is, the ground wire pin 25 corresponds to the ground wire spring piece 34, the neutral wire pin 22 corresponds to the neutral wire spring piece 17, and the live wire pin 24 corresponds to the live wire spring piece 18. The three-pole disconnection means that the disconnection and closing of the above three can be controlled, and the disconnection and closing of the neutral wire pin 22 and the neutral wire spring piece 17, the disconnection and closing of the live wire pin 24 and the live wire spring piece 18 are controlled by resetting the rotary block 5, and the disconnection and closing of the ground wire pin 25 and the ground wire spring piece 34 are controlled at the same time;

[0062] A boss is provided at the bottom of the ground wire extension end 32 . When the leakage protector is powered off, the neutral wire spring piece 17 and the live wire spring piece 18 can be disconnected before the ground wire spring piece 34 through the setting of the boss.

[0063] Embodiment 3:

[0064] like Figure 1 and Figure 2 As shown, compared with embodiment 1, the power connection terminal 8 and the spring piece 7 are embedded in the base 1; one end of the reset rotating block 5 is also provided with a protruding indicator rod 14, which can rotate with the reset rotating block 5 to display the state of the leakage protector. Specifically, the top of the indicator rod 14 is painted red. When the leakage protector is in the power-on state, the bayonet 12 and the buckle block 16 are kept in the snap-fit ​​state, as shown in FIG. Figure 2 As shown, that is, at this time, the red color of the top of the indicator rod 14 can be seen in the observation window on the housing of the leakage protector, which serves as an indicator; when the leakage protector is in the power-off state, such as Figure 1 As shown, at this time, the red color of the top of the indicator rod 14 cannot be seen in the observation window on the housing of the leakage protector.

[0065] Embodiment 4:

[0066] like Figure 6 , Figure 7 As shown, compared with Example 2, in this embodiment, an auxiliary trip spring 30 is provided at the bottom of the reset button 4. Specifically, the auxiliary trip spring 30 is arranged in the reset rotation block 5, and one end thereof 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. Fig.12 As shown, by setting the auxiliary trip spring 30, when the electromagnetic drive device is in a power-off state, 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 spring piece moves downward and separates from the power terminal to cut off the power.

[0067] Embodiment 5:

[0068] Compared with Example 1, in this embodiment, Fig.10 As shown, the bottom of the reset button 4 passes through the reset rotating block 5, and a socket 31 corresponding to the bottom of the reset button 4 is provided on the base 1. The reset button 4 is limited by the socket 31 on the upper cover 3 and 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 it is limited only by the upper cover 3.

[0069] Embodiment 6:

[0070] Compared with Example 2, in this embodiment, Figure 3As shown, the bottom of the reset button 4 passes through the reset rotation block 5 and the ground wire spring piece 34, and the base 1 is provided with a socket 31 corresponding to the bottom of the reset button 4. The reset button 4 is limited by the socket 31 on the upper cover 3 and 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 it is limited only by the upper cover 3;

[0071] In this embodiment, the ground wire spring sheet 34 is provided with a spring sheet hole 38 corresponding to the bottom of the reset button 4 , and the bottom of the reset button 4 passes through the spring sheet hole 38 .

[0072] Embodiment 7:

[0073] Compared with Example 2, in this embodiment, an auxiliary ground wire reset spring 37 is further provided between the ground wire spring piece 34 and the base 1. The auxiliary ground wire reset spring 37 can generate an upward elastic force on the ground wire spring piece 34, and the auxiliary ground wire reset spring 37 can effectively ensure the closure between the ground wire pin 25 and the ground wire spring piece 34.

[0074] Embodiment 8:

[0075] Compared with Example 1, in this embodiment, Fig.11 As shown, a reset slide groove 35 is further provided on the side of the reset button 4, and a sliding guide column 29 is further provided in the reset rotation block 5. The reset slide groove 35 can be matched with the sliding guide column 29, and the reset slide groove 35 is symmetrically arranged on both sides of the button rod 10. The reset slide groove 35 is arranged upward from the lower end of the button rod 10. The sliding guide column 29 is used to cooperate with the up and down movement of the button rod 10, and a slide groove transition inclined surface 36 is provided on the upper part of the reset slide groove 35. During the pressing process of the reset button 4, the sliding guide column 29 can first slide in cooperation with the reset slide groove 35, and then the reset button 4 is pressed down. Continue to press down, and the sliding guide post 29 slides out of the reset slide groove 35. Specifically, the sliding guide post 29 slides out along the slide groove transition slope 36 and abuts against the side of the button rod 10 where no slide groove is provided. Through this abutment, the reset rotating block 5 can be rotated a certain angle toward the electromagnetic drive device 6. 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 energized, it can ensure that the reset rotating block 5 is tightened by the driving iron core 23, so that the entire leakage protector remains energized.

[0076] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A rotary maintained leakage protector, characterized in that: The rotary maintenance-type leakage protector comprises: a base (1), a leakage protection device (2), and an upper cover plate (3); the leakage protection device (2) comprises a reset button (4), a reset rotation block (5), an electromagnetic drive device (6), and a spring (7); the base (1) is also provided with an electrical connection terminal (8) that can be electrically connected to the spring (7); The reset rotary block (5) is movably mounted on the upper part of the base (1), and both sides of the reset rotary block (5) are provided with protruding ends (15) that can abut against the spring sheet (7); the electromagnetic drive device (6) is arranged on one side of the upper part of the base (1), and the electromagnetic drive device (6) is provided with a driving iron core (23), and the driving iron core (23) protrudes from the electromagnetic drive device (6) and is movably engaged with the side wall of the reset rotary block (5), and the electromagnetic drive device (6) can drive the driving iron core (23) to move, thereby driving the reset rotary block (5) to rotate; The reset rotating block (5) is provided with a buckling block (16); the reset button (4) is sleeved with a reset spring (11); one end of the reset spring (11) abuts against the upper part of the upper cover plate (3); the other end of the reset spring (11) abuts against the reset button (4); the reset button (4) passes through the upper cover plate (3) and is inserted into the reset rotating block (5); The electromagnetic drive device (6) in a continuously powered-on state can cause the drive core (23) to continuously tighten the reset rotating block (5), and cause the buckle block (16) to continuously engage with the reset button (4), thereby driving the reset rotating block (5) to move synchronously, and the reset button (4) can keep the spring sheet (7) and the power supply terminal (8) in a powered-on state in contact through the reset rotating block (5); After the electromagnetic drive device (6) in the continuously energized state loses power, the drive iron core (23) releases the reset rotating block (5), the buckling block (16) and the reset button (4) are disengaged from the engaged state, and the spring (7) is separated from the power connection terminal (8) under the action of its own elastic force, thereby disconnecting the power supply; The top of the base (1) is provided with a sliding groove (26) for allowing the reset rotary block (5) to be inserted from top to bottom and installed in the base (1); the reset rotary block (5) can move up and down relative to the sliding groove (26); and the reset rotary block (5) can rotate in the sliding groove (26) with the protruding end (15) as the axis. The side of the reset button (4) is also provided with a reset groove (35), and the reset rotating block (5) is also provided with a sliding guide column (29), and the reset groove (35) can be matched with the sliding guide column (29); The upper portion of the reset slide groove (35) is provided with a slide groove transition inclined surface (36). When the reset button (4) is pressed downward, the sliding guide column (29) first slides in cooperation with the reset slide groove (35), then slides out along the slide groove transition inclined surface (36) and abuts against the side of the reset button (4), so that the reset rotation block (5) rotates toward the electromagnetic drive device (6).

2. A rotary maintained leakage protector as claimed in claim 1, characterized in that: The reset button (4) is provided with a bayonet (12) for engaging with the buckle block (16), and the bayonet (12) is provided with an upper clamping surface (20) and a lower tripping inclined surface (19).

3. A rotary maintained leakage protector as claimed in claim 2, characterized in that: An opening groove (13) is provided on a side wall of the reset rotation stopper (5) close to the driving iron core (23), and the buckling block (16) is arranged on a side wall opposite to the opening groove (13), and the opening groove (13) is used for buckling with the driving iron core (23).

4. A rotary maintained leakage protector as claimed in claim 2, characterized in that: After the electromagnetic drive device (6) loses power, the reset button (4) moves upward under the action of the reset spring (11). During the upward movement of the reset button (4), the reset rotary block (5) slides out along the tripping lower inclined surface (19) of the reset button (4) and is disengaged from the reset button (4).

5. A rotary maintained leakage protector as claimed in claim 1, characterized in that: The power connection terminal (8) is a pin structure, comprising a neutral wire pin (22), a live wire pin (24) and a ground wire pin (25); the spring sheet (7) comprises a neutral wire pin (17) and a live wire pin (18); the neutral wire pin (22) corresponds to the position of the neutral wire pin (17); the live wire pin (24) corresponds to the position of the live wire pin (18); and 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 pin (17) and the live wire pin (18); the neutral wire pin (17) and the live wire pin (18) can automatically move downward under the action of their own elastic force.

6. A rotary maintained leakage protector as claimed in claim 1, characterized in that: The power connection terminal (8) is a pin structure, comprising a neutral wire pin (22), a live wire pin (24) and a ground wire pin (25); the spring clip (7) comprises a neutral wire spring clip (17), a live wire spring clip (18) and a ground wire spring clip (34); the neutral wire pin (22) corresponds to the position of the neutral wire spring clip (17); the live wire pin (24) corresponds to the position of the live wire spring clip (18); and the ground wire pin (25) corresponds to the position of the ground wire spring clip (34); The two protruding ends (15) are arranged at the bottom of the neutral wire spring piece (17) and the live wire spring piece (18), and the neutral wire spring piece (17) and the live wire spring piece (18) can automatically move downward under the action of their own elastic force; the bottom of the reset rotary block (5) is provided with a ground wire protruding end (32), and the ground wire protruding end (32) is arranged at the top of the ground wire spring piece (34) for controlling the ground wire spring piece (34) to move downward, and the ground wire spring piece (34) can automatically move upward under the action of its own elastic force.

7. A rotary maintained leakage protector as claimed in claim 1, characterized in that: The leakage protection device (2) also includes a clamping guide block, which is clamped and arranged on one side of the upper part of the base (1), and the clamping guide block is provided with a clamping end for clamping and fixing the power connection end (8) on the base (1).

8. A rotary maintained leakage protector as claimed in claim 1, characterized in that: The power connection terminal (8) and the spring sheet (7) are embedded in the base (1), and the power connection terminal (8) and the spring sheet (7) are both provided with corresponding electrical connection contacts (21); one end of the reset rotary block (5) is also provided with a protruding indicator rod (14), and the indicator rod (14) can rotate with the reset rotary block (5) to display the state of the leakage protector.

9. A rotary maintained leakage protector as claimed in claim 1, characterized in that: An auxiliary tripping spring (30) is also provided at the bottom of the reset button (4).

10. A rotary maintained leakage protector as claimed in claim 5, characterized in that: The bottom of the reset button (4) passes through the reset rotating block (5), and the base (1) is provided with a socket (31) corresponding to the bottom of the reset button (4).

11. A rotary maintained leakage protector as claimed in claim 6, characterized in that: The bottom of the reset button (4) passes through the reset rotating block (5) and the ground wire spring (34), and the base (1) is provided with a socket (31) corresponding to the bottom of the reset button (4).

12. A rotary maintained leakage protector as claimed in claim 11, characterized in that: An auxiliary ground wire reset spring (37) is also provided between the ground wire spring piece (34) and the base (1).

13. A rotary maintained leakage protector as claimed in claim 6, characterized in that: The ground wire extension end (32) can cause the neutral wire spring piece (17) and the live wire spring piece (18) to be disconnected before the ground wire spring piece (34).

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