CN108565185B - Leakage indication protection mechanism and leakage indication protection method of leakage circuit breaker - Google Patents

Abstract

The invention provides an electric leakage indication protection mechanism and an electric leakage indication protection method of an electric leakage breaker, wherein the electric leakage indication protection mechanism of the electric leakage breaker comprises: the electric leakage lock comprises a shell (1), a handle (2), an indication button (3), an indication button spring (4), an electric leakage lock catch (5), an electric leakage lock catch spring (6), a release ejector rod (7), a jump buckle (8), a lock catch (9) and a traction rod (10). The advantages are that: (1) When the circuit breaks down and causes the breaker to trip and open, the leakage tripping indication function can be realized, so that a maintainer can conveniently and rapidly judge that the leakage fault occurs; (2) When the circuit breaks down to cause the breaker to trip and open, the jump fastener related to the operating handle can be stopped, so that the residual current circuit breaker is prevented from being closed again, the situation that an maintainer operates by mistake and then turns on the circuit is effectively prevented, and the safety of the maintainer is ensured.

Description

Leakage indication protection mechanism and leakage indication protection method of leakage circuit breaker

Technical Field

The invention belongs to the technical field of leakage circuit breaker mechanisms, and particularly relates to a leakage indication protection mechanism and a leakage indication protection method of a leakage circuit breaker.

Background

With the development of the low-voltage circuit breaker technology level, the electricity consumption of daily work and life is larger and larger, in order to ensure the safety of electricity consumption, the circuit breaker is widely applied to a smart grid, wherein the opening and closing of the electric leakage circuit breaker are realized by an operating handle and a transmission mechanism, and when rated leakage current occurs in a circuit, the electric leakage circuit breaker can be directly operated by the operating handle to close the electric leakage circuit breaker so as to switch on the circuit after the electric leakage circuit breaker is released and opened. In practical application, the situation has a certain defect that when the circuit breaks down to cause the breaker to trip and open, a maintainer cannot judge whether the leakage breaker breaks down due to the fault, for example, short circuit, overload or leakage and other faults, so that a certain difficulty is brought to the troubleshooting of the maintainer. When the second line is required to be overhauled by a person, the second line is easy to be misoperation by the person so as to be communicated with the line, and therefore great security threat is brought to overhauling personnel.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides an electric leakage indication protection mechanism and an electric leakage indication protection method of an electric leakage breaker, which can effectively solve the problems.

The technical scheme adopted by the invention is as follows:

the invention provides an electric leakage indication protection mechanism of an electric leakage breaker, comprising: the electric leakage lock comprises a shell (1), a handle (2), an indication button (3), an indication button spring (4), an electric leakage lock catch (5), an electric leakage lock catch spring (6), a release ejector rod (7), a jump buckle (8), a lock catch (9) and a traction rod (10);

the indication button (3) can be movably arranged in a vertical groove formed in the shell (1) up and down; the top end of the indication button spring (4) is fixedly connected with a cylinder (11) fixedly arranged on the shell (1), and the bottom end of the indication button spring (4) is fixedly connected with a barb (31) arranged on the indication button (3), so that a pulling force for upward movement is applied to the indication button (3);

the electric leakage lock catch (5) is provided with a positioning through hole (56), and the positioning through hole (56) is connected with a positioning cylinder fixedly arranged on the shell (1), so that the electric leakage lock catch (5) can do circular motion around the positioning cylinder;

one end of the electric leakage lock catch spring (6) is hung on a 1 st barb column (12) arranged on the shell (1), the other end of the electric leakage lock catch spring is connected with a 2 nd barb column (51) arranged on the electric leakage lock catch (5), and the electric leakage lock catch spring (6) applies torque which rotates clockwise around the positioning cylinder to the electric leakage lock catch (5);

the release ejector rod (7) is arranged at the left side of the electric leakage lock catch (5), and the release ejector rod (7) can move left and right; when the release ejector rod (7) does not act, the indication button (3) pressed by the external force is meshed with the electric leakage lock catch (5); when the release ejector rod (7) moves rightwards, the electric leakage lock catch (5) is pushed to rotate anticlockwise against the spring force of the electric leakage lock catch spring (6), in the rotating process, the electric leakage lock catch (5) and the indication button (3) can not be in meshed contact any more, and the indication button (3) moves upwards to pop up under the action of the spring force of the indication button spring (4);

the handle (2) is rotatably arranged on the shell (1); the jump button (8) is fixedly arranged in the shell (1), one end of the traction rod (10) is hinged with the handle (2), and the other end of the traction rod (10) is hinged with the jump button (8); the lock catch (9) is rotatably arranged in the shell (1) through a lock catch rotating shaft (92);

when the release ejector rod (7) does not act, the electric leakage lock catch (5) is not contacted with the lock catch (9), the lock catch (9) is meshed with the jump catch (8), and the shell (1), the handle (2), the traction rod (10), the jump catch (8) and the lock catch (9) form a four-bar structure; when the release ejector rod (7) moves rightwards, the electric leakage lock catch (5) is pushed to rotate anticlockwise, the electric leakage lock catch (5) further pushes the lock catch (9) to rotate anticlockwise around the lock catch rotating shaft (92), so that the lock catch (9) and the jump catch (8) are not meshed any more, and the shell (1), the handle (2), the traction rod (10), the jump catch (8) and the lock catch (9) cannot form a four-bar structure.

Preferably, the indication button (3) is provided with an indication button lower stop surface (32); the electric leakage lock catch (5) is provided with an electric leakage lock catch upper stop surface (53) matched with the indication button lower stop surface (32); the lower stop surface (32) of the indication button is meshed with the upper stop surface (53) of the leakage lock catch.

Preferably, the shell (1) is provided with a 2 nd limiting surface (14); the indication button (3) is provided with an indication button upper stop surface (34); when the indicating button (3) pops up, after the upper stop surface (34) of the indicating button is contacted with the 2 nd limiting surface (14), the indicating button (3) does not move upwards any more.

The invention provides an electric leakage indication protection method of an electric leakage indication protection mechanism according to an electric leakage breaker, which comprises the following steps:

step 1, when an indication button (3) is pressed down under the action of an external force, the indication button (3) is meshed with an electric leakage lock catch (5) under the action of an electric leakage lock catch spring (6), meanwhile, the electric leakage lock catch (5) rotates under the action of the spring force of the electric leakage lock catch spring (6) until a left tripping surface (52) of the electric leakage lock catch is contacted with a 1 st limiting surface (13) arranged on a shell (1), at the moment, a right tripping surface (54) of the electric leakage lock catch (5) is not contacted with a tripping arc surface (91) of a lock catch (9), at the moment, the electric leakage tripping mechanism is in an unlocking state, the lock catch (9) is meshed with a jump buckle (8), the shell (1), a handle (2), a traction rod (10), the jump buckle (8) and the lock catch (9) form a four-link structure, and the handle (2) is operated to enable the electric leakage circuit breaker to be closed through the four-link structure;

step 2, when electric leakage occurs, the release ejector rod (7) moves rightwards and pushes the left release surface (52) of the electric leakage lock catch (5), the electric leakage lock catch (5) overcomes the spring force of the electric leakage lock catch spring (6) to rotate anticlockwise, in the rotating process, the electric leakage lock catch (5) and the indication button (3) can not be in meshed contact any more, at the moment, the small arc surface (55) of the electric leakage lock catch (5) is in contact with the 3 rd limit surface (33) of the indication button (3), and the indication button (3) moves upwards to pop up under the spring force of the indication button spring (4), so as to achieve the electric leakage fault indication effect;

meanwhile, when the electric leakage lock catch (5) rotates anticlockwise, the lock catch (9) is pushed to rotate anticlockwise around the rotating shaft, so that the lock catch (9) and the jump buckle (8) are not meshed any more, and the shell (1), the handle (2), the traction rod (10), the jump buckle (8) and the lock catch (9) cannot form a four-bar structure, at the moment, the electric leakage release mechanism is in a self-locking state, and the handle (2) is operated, so that the electric leakage circuit breaker cannot be closed.

Preferably, in step 1, when the indication button (3) is pressed down under the action of external force, under the action of the electric leakage lock catch spring (6), the indication button (3) is engaged with the electric leakage lock catch (5), specifically:

when the indication button (3) is pressed down under the action of external force, the indication button (3) overcomes the force of the indication button spring (4) to move downwards, and when the indication button moves to a certain position, the indication button lower part stop surface (32) of the indication button (3) is meshed with the electric leakage lock catch upper part stop surface (53) of the electric leakage lock catch (5) under the action of the force of the electric leakage lock catch spring (6).

Preferably, in step 2, the indication button (3) moves upwards to pop up under the action of the spring force of the indication button spring (4), so as to achieve the leakage fault indication function, specifically:

the indication button (3) moves upwards under the action of the spring force of the indication button spring (4) until the upper stop surface (34) of the indication button is in contact with the 2 nd limit surface (14) arranged on the shell (1) and does not move, and at the moment, the indication button (3) stretches out of the shell to achieve the electric leakage fault indication effect.

The leakage indication protection mechanism and the leakage indication protection method of the leakage circuit breaker provided by the invention have the following advantages:

(1) When the circuit breaks down and causes the breaker to trip and open, the leakage tripping indication function can be realized, so that a maintainer can conveniently and rapidly judge that the leakage fault occurs; (2) When the circuit breaks down to cause the breaker to trip and open, the jump fastener related to the operating handle can be stopped, so that the residual current circuit breaker is prevented from being closed again, the situation that an maintainer operates by mistake and then turns on the circuit is effectively prevented, and the safety of the maintainer is ensured.

Drawings

Fig. 1 is a schematic diagram of an unlock state of an earth leakage breaker mechanism;

FIG. 2 is a schematic view of a closable structure of the leakage breaker;

FIG. 3 is a schematic view showing a self-locking state of the leakage breaker mechanism;

FIG. 4 is a schematic view of a structure when the leakage breaker is self-locking and cannot be closed;

fig. 5 is a front perspective view of the assembled core components of the earth leakage breaker mechanism;

fig. 6 is a rear perspective view of the assembled core components of the earth leakage breaker mechanism;

FIG. 7 is a perspective view of the indicating button;

FIG. 8 is a perspective view of the leakage lock catch;

fig. 9 is a front view showing the button and the leakage lock catch engaged state;

FIG. 10 is a rear perspective view of the snap-in condition of the indicator button and the leakage lock;

FIG. 11 is a front perspective view of the indicator button in a snap-in condition with the creeper catch;

FIG. 12 is a front view of the indicator button and creeper latch without engagement;

fig. 13 is a perspective view of the indication button when it is ejected;

FIG. 14 is a perspective view of the shackle;

FIG. 15 is a perspective view of the jump button;

FIG. 16 is a front view of the snap-in and snap-in engaged condition;

FIG. 17 is a perspective view of the snap-in and snap-in engaged condition;

FIG. 18 is a perspective view of the snap fastener and the shackle without engagement;

fig. 19 is a front view of the trip and latch without engagement.

Wherein:

1. a housing; 2. a handle; 3. an indication button; 4. an indication button spring; 5. a leakage lock catch; 6. a leakage lock catch spring; 7. ejector rod of release; 8. jumping buckle; 9. locking; 10. a traction rod;

11. a cylinder; 12. a 1 st barb column; 13. a 1 st limit surface; 14. a 2 nd limit surface;

31. a barb; 32. an indication button lower stop surface; 33. a 3 rd limit surface; 34. an indication button upper stop surface;

51. a 2 nd barb column; 52. a left trip surface; 53. the upper stop surface of the leakage lock catch; 54. a right trip surface; 55. a small arc surface; 56-positioning through holes;

91. and (5) tripping the arc surface. 92-locking the rotating shaft.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The invention provides an electric leakage indication protection mechanism of an electric leakage breaker, which can be especially arranged in a low-voltage small-sized electric leakage breaker and has the main functions of: (1) When the circuit breaks down and causes the breaker to trip and open, the leakage tripping indication function can be realized, so that a maintainer can conveniently and rapidly judge that the leakage fault occurs; (2) When the circuit breaks down to cause the breaker to trip and open, the jump fastener related to the operating handle can be stopped, so that the residual current circuit breaker is prevented from being closed again, the situation that an maintainer operates by mistake and then turns on the circuit is effectively prevented, and the safety of the maintainer is ensured.

Referring to fig. 1 to 19, the leakage indication protection mechanism of the leakage breaker includes: the electric leakage lock comprises a shell 1, a handle 2, an indication button 3, an indication button spring 4, an electric leakage lock catch 5, an electric leakage lock catch spring 6, a release ejector rod 7, a jump button 8, a lock catch 9 and a traction rod 10;

referring to fig. 7, as a structural diagram of the indication button, the indication button 3 is movably installed in a vertical groove formed in the casing 1 up and down, and stops moving after moving up to a casing limiting surface, and at this time, the indication button extends out of the casing to form a state shown in fig. 13, so as to play a role in indicating leakage faults; the indicating button is provided with an indicating button upper stop surface 34 matched with the shell and an indicating button lower stop surface 32 matched with the electric leakage lock catch; the top end of the indication button spring 4 is fixedly connected with a cylinder 11 fixedly arranged on the shell 1, and in particular, the indication button spring can be hung on the cylinder 11 arranged on the shell, the bottom end of the indication button spring 4 is fixedly connected with a barb 31 arranged on the indication button 3, and further, a pulling force for upward movement is applied to the indication button 3, so that the indication button is ejected upward and stretches out of the shell;

referring to fig. 8, which is a structural view of the leakage lock catch, the leakage lock catch 5 is provided with a positioning through hole 56, and the positioning through hole 56 is connected with a positioning cylinder fixedly installed on the housing 1, so that the leakage lock catch 5 can perform circular motion around the positioning cylinder;

one end of the electric leakage lock catch spring 6 is hung on a 1 st barb column 12 arranged on the shell 1, and the other end is connected with a 2 nd barb column 51 arranged on the electric leakage lock catch 5, and the electric leakage lock catch spring mainly has the following functions: the electric leakage lock catch spring 6 applies a torque which rotates clockwise around the positioning cylinder to the electric leakage lock catch 5, and stops rotating when the electric leakage lock catch 5 rotates clockwise until the left tripping surface 52 of the electric leakage lock catch 5 contacts with the 1 st limiting surface 13 arranged on the shell, at the moment, the lower limiting surface 32 of the indication button is meshed with the upper limiting surface 53 of the electric leakage lock catch, and the upper limiting surface of the electric leakage lock catch is reliably meshed with the lower limiting surface of the indication button through the action of the electric leakage lock catch spring 6; referring to fig. 9, 10 and 11, the snap-in state of the leakage lock catch and the indication button is shown;

when external force is applied to the indicating button, the electric leakage lock catch can rotate clockwise until the left tripping surface of the electric leakage lock catch contacts with the limiting surface arranged on the shell, and the lower limiting surface of the indicating button is meshed with the upper limiting surface of the electric leakage lock catch;

the release ejector rod 7 is arranged at the left side of the electric leakage lock catch 5, and the release ejector rod 7 can move left and right; when the release ejector rod 7 does not act, the indication button 3 pressed by the external force is meshed with the leakage lock catch 5; specifically, the indication button 3 is provided with an indication button lower stop surface 32; the electric leakage lock catch 5 is provided with an electric leakage lock catch upper stop surface 53 matched with the indication button lower stop surface 32; the indicating button lower stop surface 32 engages the creeper latch upper stop surface 53.

When the circuit breaks down and causes the circuit breaker to trip and disconnect, the ejector rod 7 of the release moves rightwards to push the left trip surface of the electric leakage lock catch 5 to overcome the spring force of the electric leakage lock catch spring 6 to rotate anticlockwise, and in the rotating process, the electric leakage lock catch 5 and the indicating button 3 cannot be in snap contact, and referring to fig. 12, which is a structural diagram when the electric leakage lock catch 5 and the indicating button 3 are not snapped, the indicating button 3 moves upwards to pop up and stretches out of the shell under the spring force of the indicating button spring 4; the electric leakage lock catch is locked at a certain rotation angle under the action of the spring force of the electric leakage lock catch and does not move any more. Wherein the shell 1 is provided with a 2 nd limiting surface 14; the indication button 3 is provided with an indication button upper stop surface 34; when the indication button 3 pops up, the indication button 3 does not move upwards any more after the upper stop surface 34 of the indication button contacts with the 2 nd limit surface 14.

Referring to fig. 15, a structure of the jump button is shown; referring to FIG. 14, a block diagram of a latch; with reference to fig. 4 and 5, the handle 2 is rotatably mounted on the housing 1; the jump button 8 is fixedly arranged in the shell 1, one end of the traction rod 10 is hinged with the handle 2, and the other end of the traction rod 10 is hinged with the jump button 8; the lock catch 9 is rotatably arranged in the shell 1 through a lock catch rotating shaft 92;

when the release ejector rod 7 does not act, the electric leakage lock catch 5 and the lock catch 9 are not contacted, the lock catch 9 is meshed with the lock catch 8, and the state shown in fig. 16 and 17 is realized at the moment, and the shell 1, the handle 2, the traction rod 10, the lock catch 8 and the lock catch 9 form a four-bar structure; when the release ejector rod 7 moves rightwards, the electric leakage lock catch 5 is pushed to rotate anticlockwise, the electric leakage lock catch 5 further pushes the lock catch 9 to rotate anticlockwise around the lock catch rotating shaft 92, so that the lock catch 9 and the jump catch 8 are not meshed any more, the state shown in fig. 18 and 19 is formed, and therefore, the shell 1, the handle 2, the traction rod 10, the jump catch 8 and the lock catch 9 cannot form a four-bar linkage structure.

The invention also provides a leakage indication protection method of the leakage indication protection mechanism according to the leakage circuit breaker, which comprises the following steps:

step 1, when the indication button 3 is pressed down under the action of external force, under the action of the electric leakage lock catch spring 6, the indication button 3 is meshed with the electric leakage lock catch 5, meanwhile, the electric leakage lock catch 5 rotates under the action of the spring force of the electric leakage lock catch spring 6 until the left release surface 52 of the electric leakage lock catch 5 contacts with the 1 st limiting surface 13 arranged on the shell 1, at this time, the right release surface 54 of the electric leakage lock catch 5 is not contacted with the release arc surface 91 of the lock catch 9, interference is avoided, and at this time, the electric leakage release mechanism is in an unlocking state, and is a schematic diagram of the unlocking state referring to fig. 1; at the moment, the lock catch 9 is meshed with the jump button 8, the shell 1, the handle 2, the traction rod 10, the jump button 8 and the lock catch 9 form a four-bar structure, at the moment, the jump button 8 and the lock catch 9 form rigid connection, the handle 2 is operated, and the leakage circuit breaker can be closed through the transmission of the four-bar structure; referring to fig. 2, a state diagram is shown in which the operating handle is turned to close the leakage breaker in the unlocked state.

In this step, when the indication button 3 is pressed down under the action of external force, under the action of the leakage lock catch spring 6, the indication button 3 is engaged with the leakage lock catch 5, specifically:

when the indication button 3 is pressed down under the action of external force, the indication button 3 moves downwards against the force of the indication button spring 4, and when the indication button moves to a certain position, the indication button lower stop surface 32 of the indication button 3 is meshed with the electric leakage lock catch upper stop surface 53 of the electric leakage lock catch 5 under the action of the force of the electric leakage lock catch spring 6.

Step 2, when electric leakage occurs, the release ejector rod 7 moves rightwards and pushes the left release surface 52 of the electric leakage lock catch 5, the electric leakage lock catch 5 overcomes the spring force of the electric leakage lock catch spring 6 to rotate anticlockwise, in the rotating process, the electric leakage lock catch 5 and the indication button 3 cannot be in snap contact, at the moment, the small arc surface 55 of the electric leakage lock catch 5 is in contact with the 3 rd limit surface 33 of the indication button 3, and the indication button 3 moves upwards under the action of the spring force of the indication button spring 4 to pop up and extend out of the shell, so that the electric leakage fault indication effect is achieved; specifically, the indication button 3 moves upwards under the action of the spring force of the indication button spring 4 until the upper stop surface 34 of the indication button is in contact with the 2 nd limit surface 14 of the shell 1, and then the indication button 3 extends out of the shell, so as to achieve the electric leakage fault indication effect.

Meanwhile, when the leakage lock catch 5 rotates anticlockwise, the lock catch 9 is pushed to rotate anticlockwise around the rotating shaft, so that the lock catch 9 and the jump buckle 8 are not meshed any more, and therefore the shell 1, the handle 2, the traction rod 10, the jump buckle 8 and the lock catch 9 cannot form a four-bar structure, and at the moment, the leakage release mechanism is in a self-locking state, and referring to fig. 3, the leakage release mechanism is a self-locking state diagram; at this time, the electric leakage breaker cannot be closed by operating the handle 2. Specifically, in the self-locking state, if the handle is operated to close the leakage breaker, the state shown in fig. 4 is formed, at this time, the right trip surface 54 of the leakage lock catch and the trip arc surface 91 of the lock catch 9 must interfere, so that the trip buckle 8 and the lock catch 9 cannot be reliably engaged and cannot form a rigid connection, and therefore, the housing 1, the handle 2, the traction rod 10, the trip buckle 8 and the lock catch 9 cannot form a four-bar structure, and the operation handle cannot close the leakage breaker.

The leakage indication protection mechanism and the leakage indication protection method of the leakage circuit breaker provided by the invention have the following design characteristics:

when no electric leakage occurs, the indication button moves downwards under the action of external force, the lower stop surface of the indication button is meshed with the upper stop surface of the electric leakage lock catch, the electric leakage lock catch rotates to a position where the left release surface of the electric leakage lock catch contacts with the limit surface of the shell, the electric leakage release mechanism is in an unlocking state, and the electric leakage circuit breaker can be closed by the operation handle.

When electric leakage occurs, the release ejector rod 7 enables the electric leakage lock catch 5 to rotate anticlockwise, on one hand, the electric leakage lock catch and the indication button are not meshed, and the indication button is ejected out of the shell to achieve the electric leakage fault indication function; on the other hand, when the electric leakage lock catch 5 rotates anticlockwise, the jump buckle 8 and the lock catch cannot be meshed to form rigid connection, the four-bar structure is destroyed, the electric leakage release mechanism is in a self-locking state, and at the moment, the operating handle cannot enable the electric leakage breaker to be closed; therefore, the problem that a maintainer operates the operating handle by mistake is avoided;

the invention has simple structure, is convenient to operate and improves the electricity safety.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which is also intended to be covered by the present invention.

Claims (4)

1. An electric leakage indication protection mechanism of an electric leakage breaker, comprising: the electric leakage lock comprises a shell (1), a handle (2), an indication button (3), an indication button spring (4), an electric leakage lock catch (5), an electric leakage lock catch spring (6), a release ejector rod (7), a jump buckle (8), a lock catch (9) and a traction rod (10);

the indication button (3) can be movably arranged in a vertical groove formed in the shell (1) up and down; the top end of the indication button spring (4) is fixedly connected with a cylinder (11) fixedly arranged on the shell (1), and the bottom end of the indication button spring (4) is fixedly connected with a barb (31) arranged on the indication button (3), so that a pulling force for upward movement is applied to the indication button (3);

the electric leakage lock catch (5) is provided with a positioning through hole (56), and the positioning through hole (56) is connected with a positioning cylinder fixedly arranged on the shell (1), so that the electric leakage lock catch (5) can do circular motion around the positioning cylinder;

one end of the electric leakage lock catch spring (6) is hung on a 1 st barb column (12) arranged on the shell (1), the other end of the electric leakage lock catch spring is connected with a 2 nd barb column (51) arranged on the electric leakage lock catch (5), and the electric leakage lock catch spring (6) applies torque which rotates clockwise around the positioning cylinder to the electric leakage lock catch (5);

the release ejector rod (7) is arranged at the left side of the electric leakage lock catch (5), and the release ejector rod (7) can move left and right; when the release ejector rod (7) does not act, the indication button (3) pressed by the external force is meshed with the electric leakage lock catch (5); when the release ejector rod (7) moves rightwards, the electric leakage lock catch (5) is pushed to rotate anticlockwise against the spring force of the electric leakage lock catch spring (6), in the rotating process, the electric leakage lock catch (5) and the indication button (3) can not be in meshed contact any more, and the indication button (3) moves upwards to pop up under the action of the spring force of the indication button spring (4);

the handle (2) is rotatably arranged on the shell (1); the jump button (8) is fixedly arranged in the shell (1), one end of the traction rod (10) is hinged with the handle (2), and the other end of the traction rod (10) is hinged with the jump button (8); the lock catch (9) is rotatably arranged in the shell (1) through a lock catch rotating shaft (92);

when the release ejector rod (7) does not act, the electric leakage lock catch (5) is not contacted with the lock catch (9), the lock catch (9) is meshed with the jump catch (8), and the shell (1), the handle (2), the traction rod (10), the jump catch (8) and the lock catch (9) form a four-bar structure; when the release ejector rod (7) moves rightwards, the electric leakage lock catch (5) is pushed to rotate anticlockwise, the electric leakage lock catch (5) further pushes the lock catch (9) to rotate anticlockwise around the lock catch rotating shaft (92), and therefore the lock catch (9) and the jump catch (8) are not meshed any more, and therefore the shell (1), the handle (2), the traction rod (10), the jump catch (8) and the lock catch (9) cannot form a four-bar structure;

wherein the indication button (3) is provided with an indication button lower stop surface (32); the electric leakage lock catch (5) is provided with an electric leakage lock catch upper stop surface (53) matched with the indication button lower stop surface (32); the lower stop surface (32) of the indication button is meshed with the upper stop surface (53) of the leakage lock catch;

wherein the shell (1) is provided with a 2 nd limiting surface (14); the indication button (3) is provided with an indication button upper stop surface (34); when the indicating button (3) pops up, after the upper stop surface (34) of the indicating button is contacted with the 2 nd limiting surface (14), the indicating button (3) does not move upwards any more.

2. A leakage indication protection method of a leakage indication protection mechanism of a leakage breaker according to claim 1, comprising the steps of:

step 1, when an indication button (3) is pressed down under the action of an external force, the indication button (3) is meshed with an electric leakage lock catch (5) under the action of an electric leakage lock catch spring (6), meanwhile, the electric leakage lock catch (5) rotates under the action of the spring force of the electric leakage lock catch spring (6) until a left tripping surface (52) of the electric leakage lock catch is contacted with a 1 st limiting surface (13) arranged on a shell (1), at the moment, a right tripping surface (54) of the electric leakage lock catch (5) is not contacted with a tripping arc surface (91) of a lock catch (9), at the moment, the electric leakage tripping mechanism is in an unlocking state, the lock catch (9) is meshed with a jump buckle (8), the shell (1), a handle (2), a traction rod (10), the jump buckle (8) and the lock catch (9) form a four-link structure, and the handle (2) is operated to enable the electric leakage circuit breaker to be closed through the four-link structure;

step 2, when electric leakage occurs, the release ejector rod (7) moves rightwards and pushes the left release surface (52) of the electric leakage lock catch (5), the electric leakage lock catch (5) overcomes the spring force of the electric leakage lock catch spring (6) to rotate anticlockwise, in the rotating process, the electric leakage lock catch (5) and the indication button (3) can not be in meshed contact any more, at the moment, the small arc surface (55) of the electric leakage lock catch (5) is in contact with the 3 rd limit surface (33) of the indication button (3), and the indication button (3) moves upwards to pop up under the spring force of the indication button spring (4), so as to achieve the electric leakage fault indication effect;

meanwhile, when the electric leakage lock catch (5) rotates anticlockwise, the lock catch (9) is pushed to rotate anticlockwise around the rotating shaft, so that the lock catch (9) and the jump buckle (8) are not meshed any more, and the shell (1), the handle (2), the traction rod (10), the jump buckle (8) and the lock catch (9) cannot form a four-bar structure, at the moment, the electric leakage release mechanism is in a self-locking state, and the handle (2) is operated, so that the electric leakage circuit breaker cannot be closed.

3. The leakage indication protection method of the leakage indication protection mechanism of the leakage circuit breaker according to claim 2, wherein, in step 1, when the indication button (3) is pressed down under the action of an external force, the indication button (3) is engaged with the leakage lock catch (5) under the action of the leakage lock catch spring (6), specifically:

when the indication button (3) is pressed down under the action of external force, the indication button (3) overcomes the force of the indication button spring (4) to move downwards, and when the indication button moves to a certain position, the indication button lower part stop surface (32) of the indication button (3) is meshed with the electric leakage lock catch upper part stop surface (53) of the electric leakage lock catch (5) under the action of the force of the electric leakage lock catch spring (6).

4. The earth leakage indication protection method of the earth leakage indication protection mechanism of the earth leakage breaker according to claim 2, wherein in step 2, the indication button (3) moves upwards and pops up under the action of the spring force of the indication button spring (4), so as to achieve the earth leakage fault indication function, specifically:

the indication button (3) moves upwards under the action of the spring force of the indication button spring (4) until the upper stop surface (34) of the indication button is in contact with the 2 nd limit surface (14) arranged on the shell (1) and does not move, and at the moment, the indication button (3) stretches out of the shell to achieve the electric leakage fault indication effect.