A new type of maintenance type leakage protector

Abstract

The invention discloses a novel maintenance-type leakage protector, which relates to the technical field of leakage protectors, and comprises: a base, an upper cover plate, and a leakage protector, wherein the leakage protector comprises a reset button, a reset block, an electromagnetic driving device and a spring; the base is also provided with a power connection end electrically connected to the spring; a reset spring is sleeved on the reset button; the reset button passes through the upper cover plate and is inserted into the reset block, and the reset button can drive the reset block to move synchronously through a snap piece, and pressing the reset button can cause the reset block to drive the spring to move downward and separate from the power connection end to cut off the power, and the reset button can be reset and moved upward under the action of the reset spring, and the reset block can drive the spring to move upward and contact the power connection end to turn on the power; the invention maintains the closed state of the leakage protector by adopting a method of continuously supplying power to the electromagnetic driving device to attract and snap, and when the leakage protector encounters power interruption, poor contact, or phase loss, the leakage protector is actively separated and cuts off the power, thereby eliminating safety hazards.

Description

Technical Field

[0001] The invention relates to the technical field of leakage protectors, in particular to a novel maintenance-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 leakage protectors 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 protectors with mechanical self-locking structure of current or voltage are 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 short-lived 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 short-lived and the ground wire is abnormally energized or leaking, the leakage protector will lose its protective function, resulting in a safety accident.

[0003] In view of the above problems, in the present invention, a self-release 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 and eliminating safety hazards. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] The present invention is aimed at the above defects existing in the prior art, and specially proposes a new type of maintenance type leakage protector, which solves the problem of complex structure existing in the existing leakage protector, and also solves the problem that the leakage protector can only break the circuit when the power is on.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the present invention provides a new type of maintenance type leakage protector, comprising: a base, an upper cover plate, and a leakage protection device, wherein the leakage protection device comprises a reset button, a reset block, an electromagnetic drive device and a spring; the base is also provided with an electric terminal which can be electrically connected to the spring;

[0008] The reset block can be movably installed on the upper part of the base, and the reset block is provided with a protruding end 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 includes a driving iron core and a buckle sheet, the driving iron core extends out of the electromagnetic driving device, and the driving iron core is movably engaged with the buckle sheet, and the electromagnetic driving device can drive the driving iron core to move, thereby driving the buckle sheet to move, and the reset block is provided with a buckle groove for the buckle sheet to be inserted;

[0009] A reset spring is sleeved on the reset button, 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 block, and the reset button can drive the reset block to move synchronously through the buckle piece. When the buckle piece is engaged with the reset button, pressing the reset button can cause the reset block to drive the spring piece to move downward and separate from the power terminal to cut off the power. When the reset button is not pressed by external force, the reset button resets and moves upward under the action of the reset spring, so that the reset block drives the spring piece to move upward and contact the power terminal to turn on the power;

[0010] The electromagnetic drive device in a continuously powered-on state can cause the driving iron core to continuously tighten the buckle piece and cause the buckle piece to continuously engage with the reset button. The reset button can keep the spring piece in contact with the power terminal through the reset block.

[0011] Among them, after the electromagnetic drive device loses power, the driving iron core no longer tightens the snap piece, the snap piece and the reset button are out of the snap connection state, and the spring piece separates from the power terminal under its own elastic force and cuts off the power.

[0012] The reset button is provided with a bayonet which is engaged with the bayonet piece, and the bayonet is provided with an upper engaging surface and a lower inclined surface for releasing.

[0013] Among them, the snap-on piece is a bent metal sheet, with a U-shaped opening at one end of the snap-on piece and a button opening at the other end. The U-shaped opening is used to snap into the driving iron core, the button opening can be used for the reset button to pass through, and one edge of the button opening can be snap-fitted with the bayonet.

[0014] Among them, after the electromagnetic drive device loses power, the drive iron core no longer tightens the snap piece, and the reset button moves upward under the action of the reset spring. During the upward movement of the reset button, the snap piece slides out along the lower inclined surface of the reset button and disengages from the reset button.

[0015] 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 spring piece includes a neutral wire spring piece and a live wire spring piece, the neutral wire pin corresponds to the position of the neutral wire spring piece, the live wire pin corresponds to the position of the live wire spring piece, and the ground wire pin is directly connected to the ground wire; there are two protruding ends, the two protruding ends are located on both sides of the reset block and are arranged at the bottom of the neutral wire spring piece and the live wire spring piece, and the neutral wire spring piece and the live wire spring piece can automatically move downward under the action of their own elastic force.

[0016] 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 spring clip includes a neutral wire spring clip, a live wire spring clip and a ground 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 corresponds to the position of the ground wire spring clip; there are three protruding ends, two of which are located on both sides of the reset block and are arranged at the bottom of the neutral wire spring clip and the live wire spring clip, so that the neutral wire spring clip and the live wire spring clip can be automatically displaced downward under the action of their own elastic force; the third protruding end is located at the bottom of the reset block, and is arranged at the top of the ground wire spring clip to control the downward movement of the ground wire spring clip, and the ground wire spring clip can be automatically displaced upward under the action of its own elastic force.

[0017] The leakage protection device further comprises 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 pin on the base;

[0018] The top of the base is provided with a sliding groove which allows the reset stopper to be inserted from top to bottom and installed in the base, and the reset stopper can move up and down relative to the sliding groove.

[0019] The pins and the spring pieces are embedded in the base.

[0020] Wherein, an auxiliary tripping spring is arranged between the reset button and the reset stopper.

[0021] 3. Beneficial Effects

[0022] Compared with the prior art, the present invention provides a novel type of 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 buckle piece 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.

[0023] At the same time, through the setting of the auxiliary tripping spring, when the electromagnetic drive device is de-energized, the reset block can move downward under the elastic force of the auxiliary tripping 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

[0024] Figure 1 It is a three-dimensional diagram of the disconnected state of the leakage protector of the present invention;

[0025] Figure 2 It is a three-dimensional diagram of the closed state of the leakage protector of the present invention;

[0026] Figure 3 An exploded view of the leakage protector of the present invention;

[0027] Figure 4 A three-dimensional diagram of the base of the present invention;

[0028] Figure 5 It is a three-dimensional diagram of the buckle piece of the present invention;

[0029] Figure 6 Partial structure of the reset button and electromagnetic drive device of the present invention Figure 1 ;

[0030] Figure 7 Partial structure of the reset button and electromagnetic drive device of the present invention Figure 2 ;

[0031] Figure 8 Partial structure of the reset button and electromagnetic drive device of the present invention Figure 3 ;

[0032] Fig. 9 is a three-dimensional diagram of a reset stopper according to Embodiment 2 of the present invention;

[0033] Fig.10 Partial structure of the reset button and electromagnetic drive device of the present invention Figure 4 ;

[0034] Fig.11 This is a structural diagram of Embodiment 3 of the present invention;

[0035] In the figure: 1 is the lower inclined surface of the trip; 2 is the base; 3 is the upper cover; 4 is the leakage protection device; 5 is the neutral wire pin; 6 is the live wire pin; 7 is the ground wire pin; 8 is the pin; 9 is the spring; 10 is the reset button; 11 is the upper clamping surface; 12 is the reset stopper; 13 is the clamping guide block; 14 is the electromagnetic drive device; 15 is the neutral wire spring; 16 is the live wire spring; 17 is the ground wire spring; 18 is the U-shaped opening; 19 is the electrical connection contact; 20 is the bayonet; 21 is the reset spring; 22 is the button opening; 23 is the driving iron core; 24 is the buckle piece; 25 is the button body; 26 is the buckle groove; 27 is the button rod; 28 is the sliding groove; 31 is the clamping end; 32 is the extending end; 33 is the auxiliary trip spring. DETAILED DESCRIPTION

[0036] 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 are not intended to limit the scope of the present invention.

[0037] Embodiment 1:

[0038] A novel maintenance type leakage protector according to an embodiment of the present invention is as follows: Figures 1 to 9As shown, it includes: a base 2, an upper cover plate 3, and a leakage protection device 4, wherein the leakage protection device 4 includes a reset button 10, a reset block 12, an electromagnetic drive device 14, and a spring 9; the base 2 is also provided with an electric terminal 8 that can be electrically connected to the spring 9, and the electric terminal 8 and the spring 9 are embedded in the base 2. In this embodiment, the upper cover plate 3 can be a partition of plastic or other materials that only plays the role of supporting the reset spring 21 described below, or a circuit board can be used to play the same role;

[0039] like Figure 3 As shown, the leakage protection device 4 also includes a clamping guide block 13, which is clamped and arranged on one side of the upper part of the base 2. The clamping guide block 13 is positioned and fixed by a clamping groove corresponding to the base 2. The clamping guide block 13 is provided with a clamping end 31 for clamping and fixing the power terminal 8 on the base 2; the reset block 12 can be installed in the middle position of the upper part of the base 2 in an upward and downward manner. Specifically, the top of the base 2 is provided with a sliding groove 28 that allows the reset block 12 to be inserted from top to bottom and installed in the base 2. The reset block 12 can move up and down relative to the sliding groove 28, and the reset block 12 is provided with a spring that can move with the reset block 12. The extended end 32 of the spring sheet 9 abuts against the spring sheet 9. Specifically, the extended end 32 can control the contact and separation between the spring sheet 9 and the power connection terminal 8; the electromagnetic driving device 14 is arranged on the other side of the upper part of the base 2, and the electromagnetic driving device 14 includes a driving iron core 23 and a snap sheet 24. The driving iron core 23 extends out of the electromagnetic driving device 14, and the driving iron core 23 is movably snapped with the snap sheet 24. The electromagnetic driving device 14 can drive the driving iron core 23 to move, thereby driving the snap sheet 24 to move. The electromagnetic driving device 14 specifically adopts the magnetic force generated by the electromagnetic coil being energized, and a snap groove 26 for inserting the snap sheet 24 is provided on the reset block 12;

[0040] like Figure 1 As shown, in this embodiment, the reset button 10 includes a button body 25 and a button rod 27, and a reset spring 21 is sleeved on the button rod 27. One end of the reset spring 21 abuts against the upper part of the upper cover plate 3, and the other end of the reset spring 21 abuts against the reset button 10; the reset button 10 passes through the upper cover plate 3 and is inserted into the reset block 12, and the reset button 10 can drive the reset block 12 to move synchronously through the snap piece 24. Specifically, the reset button 10 is provided with a bayonet 20 that is snap-fitted with the snap piece 24, and the bayonet 20 is provided with an upper snap-fit ​​surface 11 and a tripping lower inclined surface 1, that is, the bayonet 20 is an opening similar to a "7" shape, and the opening direction of the bayonet 20 is away from the electromagnetic drive device 14.

[0041] In addition, the snap-on piece 24 is a bent metal sheet with a bending angle of about 90°. A U-shaped opening 18 is provided at one end of the snap-on piece 24, and the U-shaped opening 18 is vertically arranged. A key opening 22 is provided at the other end of the snap-on piece 24, and the key opening 22 is horizontally arranged. The U-shaped opening 18 is used to engage with the driving iron core 23, and the key opening 22 can be used for the reset button 10 to pass through, and an edge of the key opening 22 can be engaged with the bayonet 20, that is, Figure 5 and Figure 7 Specifically, a slot matching the U-shaped opening 18 is provided at the end of the driving core 23, that is, when the driving core 23 contracts into the electromagnetic driving device 14 under the magnetic force of the electromagnetic driving device 14, that is, the distance that the driving core 23 extends outward becomes shorter, when the button rod 27 at the bottom of the reset button 10 is in an appropriate position, the slot 20 on the button rod 27 is snap-fitted with the snap-on piece 24, and under the continuous action of the electromagnetic driving device 14, the slot 20 on the button rod 27 and the snap-on piece 24 maintain a snap-fit ​​state.

[0042] During the specific operation of the leakage protector of this embodiment, the bayonet 20 and the snap piece 24 remain in a snap-fit ​​state, and pressing the reset button 10 can cause the reset block 12 to drive the spring piece 9 to move downward and separate from the power terminal 8 to cut off the power, or because the reset block 12 moves downward, the spring piece 9 moves downward accordingly under the action of its own elastic force, thereby separating from the power terminal 8 and cutting off the power; when the reset button 10 is no longer pressed, the reset button 10 resets and moves upward under the action of the reset spring 21, so that the reset block 12 drives the spring piece 9 to move upward and contact the power terminal 8 to turn on the power; that is, the electromagnetic drive device 14 in a continuously powered-on state can cause the driving iron core 23 to continuously tighten the snap piece 24, and cause the snap piece 24 to continuously snap-fit ​​with the reset button 10, and the reset button 10 can keep the spring piece 9 in a powered-on state in contact with the power terminal 8 through the reset block 12.

[0043] When the electromagnetic drive device 14 loses power, the driving iron core 23 no longer tightens the snap-on piece 24, the snap-on piece 24 and the reset button 10 are disengaged from the snap-on state, and the spring piece 9 is separated from the power terminal 8 under the action of its own elastic force and the power is cut off; specifically, after the electromagnetic drive device 14 loses power, the reset button 10 moves upward under the action of the reset spring 21. During the upward movement of the reset button 10, the snap-on piece 24 loses the pulling force applied by the driving iron core 23, and will slide out along the tripping lower inclined surface 1 of the reset button 10 and disengage from the snap-on state with the reset button 10, that is, in this state, the button rod 27 of the reset button 10 is not in the limited state, and the reset button 10 and the reset block 12 are in a separated state that cannot be linked, and at this time, the spring piece 9 moves downward under the action of its own elastic force and is separated from the power terminal 8 and the power is cut off.

[0044] Through the above-mentioned structural design, the present embodiment adopts the method of continuous power supply and attraction of the electromagnetic drive device 14, so that when the leakage protector encounters power interruption, poor contact, or phase loss, the attraction and engagement structure of the electromagnetic drive device 14 cannot generate magnetic force due to the loss of voltage, so that the engagement structure of the bayonet 20 and the buckle piece 24 is no longer engaged, and the reset button 10 and the reset block 12 are in a separated state where they cannot be linked, so that the leakage protector is separated and the power is cut off to form active protection, thereby eliminating safety hazards.

[0045] In this embodiment, the power connection terminal 8 is a pin structure, including a neutral wire pin 5, a live wire pin 6 and a ground wire pin 7, the spring piece 9 includes a neutral wire spring piece 15 and a live wire spring piece 16, and there is no ground wire spring piece. The neutral wire pin 5 corresponds to the position of the neutral wire spring piece 15, the live wire pin 6 corresponds to the position of the live wire spring piece 16, and the ground wire pin 7 is directly connected to the ground wire or connected to the ground wire through a circuit board; the extended end 32 is provided with two, such as Fig.10 As shown, the two protruding ends 32 are located on both sides of the reset block 12 and are arranged at the lower part of the neutral wire spring piece 15 and the live wire spring piece 16. The neutral wire spring piece 15 and the live wire spring piece 16 can automatically move downward under the action of their own elastic force. Corresponding electrical connection contacts 19 are provided on the power terminal 8 and the spring piece 9, which can be used to ensure the stability and reliability of the electrical connection.

[0046] Embodiment 2:

[0047] like Figure 3 As shown, compared with embodiment 1, in this embodiment, the power connection terminal 8 is a pin structure, including a neutral wire pin 5, a live wire pin 6 and a ground wire pin 7, the spring clip 9 includes a neutral wire spring clip 15, a live wire spring clip 16 and a ground wire spring clip 17, the neutral wire pin 5 corresponds to the position of the neutral wire spring clip 15, the live wire pin 6 corresponds to the position of the live wire spring clip 16, and the ground wire pin 7 corresponds to the position of the ground wire spring clip 17; there are three extending ends 32, two of which are located on both sides of the reset stopper 12 and It is arranged at the lower part of the neutral wire spring piece 15 and the live wire spring piece 16, and the neutral wire spring piece 15 and the live wire spring piece 16 can automatically move downward under the action of their own elastic force; the third protruding end 32 is located at the bottom of the reset block 12, and is arranged at the top of the ground wire spring piece 17 to control the downward movement of the ground wire spring piece 17, and the ground wire spring piece 17 can automatically move upward under the action of its own elastic force. Corresponding electrical connection contacts 19 are provided on the power terminal 8 and the spring piece 9, which can be used to ensure the stability and reliability of the electrical connection.

[0048] Embodiment 3:

[0049] like Fig.11As shown, compared with Example 1, in this embodiment, an auxiliary tripping spring 33 is provided between the reset button 10 and the reset block 12; specifically, the auxiliary tripping spring 33 is arranged in the reset block 12, and one end thereof abuts against the bottom of the button rod 27. When the electromagnetic drive device 14 is in a power-off state, the reset block 12 can move downward under the elastic force of the auxiliary tripping spring 33, and there is no need to move the reset block 12 downward by the elastic force of the spring sheet 9 alone, thereby ensuring that the spring sheet 9 can be separated from the power terminal 8 and the power is cut off.

[0050] 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 new type of maintenance type leakage protector, characterized in that: The novel maintenance-type leakage protector comprises: a base (2), an upper cover plate (3), and a leakage protection device (4); the leakage protection device (4) comprises a reset button (10), a reset block (12), an electromagnetic drive device (14), and a spring (9); the base (2) is also provided with an electrical connection terminal (8) that can be electrically connected to the spring (9); The reset block (12) is movably mounted on the upper part of the base (2), and is provided with a protruding end (32) that can abut against the spring sheet (9); the electromagnetic drive device (14) is arranged on one side of the upper part of the base (2), and comprises a driving iron core (23) and a snap-on sheet (24); the driving iron core (23) protrudes from the electromagnetic drive device (14) and is movably snap-on with the snap-on sheet (24); the electromagnetic drive device (14) can drive the driving iron core (23) to move, thereby driving the snap-on sheet (24) to move; and the reset block (12) is provided with a snap-on groove (26) for the snap-on sheet (24) to be inserted; A reset spring (21) is sleeved on the reset button (10), one end of the reset spring (21) abuts against the upper part of the upper cover plate (3), and the other end of the reset spring (21) abuts against the reset button (10); the reset button (10) passes through the upper cover plate (3) and is inserted into the reset block (12), and the reset button (10) can drive the reset block (12) to move synchronously through the snap-on piece (24); when the snap-on piece (24) and the reset button (10) are snapped, pressing the reset button (10) can cause the reset block (12) to drive the spring sheet (9) to move downward and separate from the power terminal (8), thereby cutting off the power; when the reset button (10) is not pressed by external force, the reset button (10) resets and moves upward under the action of the reset spring (21), and can cause the reset block (12) to drive the spring sheet (9) to move upward and contact with the power terminal (8), thereby turning on the power; The electromagnetic drive device (14) in a continuously powered-on state can cause the drive iron core (23) to continuously tighten the buckle piece (24), and cause the buckle piece (24) to continuously engage with the reset button (10); the reset button (10) can maintain the power-on state in which the spring piece (9) and the power connection terminal (8) are in contact through the reset block (12); After the electromagnetic drive device (14) loses power, the drive iron core (23) no longer tightens the buckle piece (24), the buckle piece (24) and the reset button (10) are out of the locked state, and the spring piece (9) is separated from the power connection terminal (8) under the action of its own elastic force, thereby cutting off power; The reset button (10) is provided with a bayonet (20) that is engaged with the bayonet piece (24), and the bayonet (20) is provided with an upper engaging surface (11) and a lower tripping inclined surface (1); The snap-on piece (24) is a bent metal sheet, one end of the snap-on piece (24) is provided with a U-shaped opening (18), and the other end of the snap-on piece (24) is provided with a key opening (22), the U-shaped opening (18) is used for snapping with the driving iron core (23), the key opening (22) can be used for the reset button (10) to pass through, and an edge of the key opening (22) can be snap-fitted with the bayonet (20).

2. A novel maintenance type leakage protector as claimed in claim 1, characterized in that: After the electromagnetic drive device (14) loses power, the drive core (23) no longer tightens the buckle piece (24), and the reset button (10) moves upward under the action of the reset spring (21). During the upward movement of the reset button (10), the buckle piece (24) slides out along the lower disengaging slope (1) of the reset button (10) and is disengaged from the reset button (10).

3. A novel maintenance type leakage protector as claimed in claim 1, characterized in that: The power connection terminal (8) is a pin structure, comprising a neutral wire pin (5), a live wire pin (6) and a ground wire pin (7); the spring sheet (9) comprises a neutral wire spring sheet (15) and a live wire spring sheet (16); the neutral wire pin (5) corresponds to the position of the neutral wire spring sheet (15); the live wire pin (6) corresponds to the position of the live wire spring sheet (16); and the ground wire pin (7) is directly connected to the ground wire; two extending ends (32) are provided, the two extending ends (32) are located on both sides of the reset block (12) and are arranged at the bottom of the neutral wire spring sheet (15) and the live wire spring sheet (16); the neutral wire spring sheet (15) and the live wire spring sheet (16) can automatically move downward under the action of their own elastic force.

4. A novel maintenance type leakage protector as claimed in claim 1, characterized in that: The power connection end (8) is a pin structure, including a neutral wire pin (5), a live wire pin (6) and a ground wire pin (7); the spring sheet (9) includes a neutral wire spring sheet (15), a live wire spring sheet (16) and a ground wire spring sheet (17); the neutral wire pin (5) corresponds to the position of the neutral wire spring sheet (15), the live wire pin (6) corresponds to the position of the live wire spring sheet (16), and the ground wire pin (7) corresponds to the position of the ground wire spring sheet (17); the protruding end (32) is provided with three, two The protruding ends (32) are located on both sides of the reset block (12) and are arranged at the bottom of the neutral wire spring piece (15) and the live wire spring piece (16). The neutral wire spring piece (15) and the live wire spring piece (16) can automatically move downward under the action of their own elastic force; the third protruding end (32) is located at the bottom of the reset block (12) and is arranged at the top of the ground wire spring piece (17) to control the ground wire spring piece (17) to move downward. The ground wire spring piece (17) can automatically move upward under the action of its own elastic force.

5. A novel maintenance type leakage protector as claimed in claim 1, characterized in that: The leakage protection device (4) further comprises a clamping guide block (13), the clamping guide block (13) being clamped and arranged on one side of the upper part of the base (2), and the clamping guide block (13) being provided with a clamping end (31) for clamping and fixing the power connection end (8) on the base (2).

6. A novel maintenance type leakage protector as claimed in claim 1, characterized in that: A sliding groove (28) is provided on the top of the base (2) so that the reset block (12) can be inserted from top to bottom and installed in the base (2); the reset block (12) can move up and down relative to the sliding groove (28).

7. A novel maintenance type leakage protector as claimed in claim 1, characterized in that: The power connection terminal (8) and the spring sheet (9) are embedded in the base (2).

8. A novel maintenance type leakage protector as claimed in claim 1, characterized in that: An auxiliary tripping spring (33) is provided between the reset button (10) and the reset stopper (12).

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