CN220796612U - Indicating mechanism and leakage circuit breaker - Google Patents

Abstract

An indicating mechanism and an electric leakage breaker relate to the technical field of piezoelectric devices. The indicating mechanism comprises a test button, an indicating piece and a leakage switch; the indicator is at least partially penetrated in the test button. The indicating mechanism has compact structure and small occupied space, can improve the space utilization rate of the circuit board, and is beneficial to miniaturization of the circuit breaker.

Description

Indicating mechanism and leakage circuit breaker

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to an indicating mechanism and an electric leakage breaker.

Background

With the rapid development of economy, the living standard of people is rapidly improved, and higher demands are made on household electricity safety. The circuit breaker may be mounted to a terminal distribution line. Meanwhile, the circuit can also be used for switching on, carrying and breaking current under normal or abnormal circuit conditions, so that effective protection is formed for circuits and electrical equipment.

The earth leakage circuit breaker is as one of the circuit breakers, is provided with divide-shut brake indicating device and earth leakage protection function generally, in order to ensure that earth leakage protection function is normal, can be provided with indicating mechanism on earth leakage circuit breaker generally, however, current indicating mechanism occupation space is great, and space utilization to the circuit board is lower, so difficult degree is great in the overall arrangement, is difficult to be applicable to miniaturized circuit breaker's market demand.

Disclosure of Invention

The utility model aims to provide an indicating mechanism and an electric leakage breaker, which have compact structures and small occupied spaces, can improve the space utilization rate of a circuit board and are beneficial to miniaturization of the breaker.

Embodiments of the present utility model are implemented as follows:

in one aspect of the utility model, an indication mechanism is provided, the indication mechanism comprising a test button, an indicator and a leakage switch; the indicator is at least partially penetrated in the test button. The indicating mechanism has compact structure and small occupied space, can improve the space utilization rate of the circuit board, and is beneficial to miniaturization of the circuit breaker.

Optionally, the test button is located at a side of the indicator along a first direction, and the leakage switch is located at a side of the indicator along a second direction, where the first direction and the second direction are different.

Optionally, at least part of the indicator is a light guide; the light guide piece is used for guiding the optical signal on the circuit board of the switch or the electric unit to the indicator piece so that the indication mark of the indicator piece is displayed in an optical signal mark when the indicator piece is switched on or off and/or fails.

Optionally, the test button includes a first body with a through hole and an action part connected with the first body, the indicator includes a second body and an indicator part connected with the second body, at least the indicator part is penetrated in the through hole; the test button is driven to move towards the direction close to the indicator, the action part acts on the electric leakage switch, and the electric leakage switch is used for controlling the opening of the electric leakage breaker; the indication part is used for displaying indication marks when the leakage switch drives the leakage breaker to switch on or off and/or fails.

Optionally, the test button further includes a support platform connected to the first body, the support platform being located below the through hole; the indicator is positioned on the support table.

Optionally, the support stand is located above the leakage switch, and the positional relationship between the support stand and the leakage switch includes at least one of the following: a partial gap is arranged between the supporting table and the leakage switch; there is no gap between the support table and the leakage switch.

Optionally, the inner wall of the through hole has a first inner wall surface and a second inner wall surface; the part of the indicator penetrating through the through hole is provided with a first outer wall surface matched with the first inner wall surface and a second outer wall surface matched with the second inner wall surface; the first inner wall surface is a plane, and the second inner wall surface is a curved surface.

Optionally, the periphery of the first body has two first spacing faces of relative setting, and two first spacing faces are arranged along the radial direction of through hole, and two first spacing faces are used for carrying out radial spacing with the base cooperation of electric leakage circuit breaker in order to carry out the test button.

Optionally, the indicating mechanism further comprises a return spring, the return spring comprising at least one of: one end of the reset spring acts on the test button, and the other end acts on the base of the leakage breaker; when the test button is driven to move in a direction approaching to the indicator, the reset spring stores energy;

the reset spring comprises a spring body and an extension section connected with one end of the spring body, the extension section is positioned between the spring body and the test button, and the orthographic projection of the spring body on the test button is positioned in the extension section.

Optionally, the test button further includes a limit post connected to the first body, and the spring body is sleeved on the periphery of the limit post.

Optionally, the relationship of the central axis of the test button and the central axis of the spring body includes at least one of: not collinear; at least partially collinear.

In another aspect of the present utility model, there is provided an earth leakage breaker including the above-described indication mechanism.

The beneficial effects of the utility model include:

the indicating mechanism comprises a test button, an indicating piece and a leakage switch; the indicator is at least partially penetrated in the test button. According to the electric leakage circuit breaker, the part of the indicating piece is arranged in the test button in a penetrating mode, so that the indicating piece and the test button can be connected, the whole size of the indicating mechanism is compact, the occupied space of the indicating piece and the test button on the indicating mechanism can be reduced, when the indicating mechanism is applied to the electric leakage circuit breaker, the space utilization rate of the circuit board can be improved, the miniaturization of the electric leakage circuit breaker is facilitated, and the electric leakage circuit breaker has a better application prospect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an indication mechanism according to an embodiment of the present utility model;

FIG. 2 is a second schematic diagram of an indication mechanism according to an embodiment of the present utility model;

FIG. 3 is a third schematic diagram of an indication mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a test button according to an embodiment of the present utility model;

FIG. 5 is a second schematic diagram of a test button according to an embodiment of the present utility model;

FIG. 6 is a schematic structural diagram of an indicator according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of the structure of an indicator, a test button and a return spring according to an embodiment of the present utility model;

FIG. 8 is a third schematic diagram of a test button according to an embodiment of the present utility model;

fig. 9 is a second schematic structural view of an indicator according to an embodiment of the present utility model.

Icon: 10-test button; 11-a first body; 111-through holes; 1111—a first inner wall surface; 1112-a second inner wall surface; 112-a first limiting surface; 12-action part; 13-a support table; 131-limiting blocks; 1311-a second stop surface; 14-limiting columns; 20-indicator; 21-a second body; 22-an indication part; 23-a second outer wall; 24-a first mating surface; 30-leakage switch; 40-a reset spring; 41-a spring body; 42-extension; 200-base; 210-a boss; 300-circuit board.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 3, the present embodiment provides an indicating mechanism, which includes a test button 10, an indicator 20 and a leakage switch 30; the indicator 20 is at least partially disposed through the test button 10. The indicating mechanism has compact structure and small occupied space, can improve the space utilization rate of the circuit board 300, and is beneficial to miniaturization of the circuit breaker.

The test button 10 is configured to be driven to move in a direction approaching the leakage switch 30, so as to press the leakage switch 30, and further enable the leakage switch 30 to control the opening of the leakage breaker.

The indicator 20 is used for performing a switching-off indication when the leakage breaker is switched off; or, when the leakage breaker is switched on, a switching-on instruction is carried out; further alternatively, the fault indication is performed when the earth leakage breaker fails (the fault includes an actual fault occurring in an actual application and a fault simulated in a test earth leakage), and the indication timing of the indicator 20 is not limited in this application.

When the test button 10 is pressed to the earth leakage breaker during the earth leakage test, if the earth leakage indication function of the earth leakage breaker is normal, the earth leakage switch drives the earth leakage breaker to open, and at this time, the indicator 20 will perform the earth leakage indication.

In this embodiment, at least part of the indicator 20 is disposed in the test button 10 in a penetrating manner, so that the test button 10 and the indicator 20 can be combined together, and the combined test button 10 and indicator 20 can effectively reduce the overall volume of the indicator mechanism, so that the occupation of the indicator mechanism on the volume space of the residual current circuit breaker can be saved.

The leakage switch 30 is used for driving the leakage breaker to open, and it should be noted that the operation of the leakage switch 30 may be triggered by an electromagnetic signal when the leakage breaker fails, or may be triggered by pressing the test button 10.

In summary, the indication mechanism provided by the present application includes a test button 10, an indicator 20, and a leakage switch 30; the indicator 20 is at least partially disposed through the test button 10. According to the electric leakage circuit breaker, the part of the indicator 20 is arranged in the test button 10 in a penetrating mode, the indicator 20 and the test button 10 can be connected together, the whole size of the indicating mechanism is compact, the occupied space of the indicator 20 and the test button 10 on the indicating mechanism can be reduced, so that when the indicating mechanism is applied to the electric leakage circuit breaker, the space utilization rate of the circuit board 300 can be improved, the miniaturization of the electric leakage circuit breaker is facilitated, and the electric leakage circuit breaker has a better application prospect.

It should be noted that, the indication mechanism may be used to indicate a switching-off or switching-on state of the leakage breaker, including being used to indicate a switching-off or switching-on state during normal switching-off; the device can also be used for indicating a brake-off or brake-on state when the residual current circuit breaker fails; the open or close state can be indicated when the leakage circuit breaker performs the leakage test. In the present embodiment, the description will be made mainly taking the indication mechanism for performing the opening indication when the earth leakage breaker performs the earth leakage test as an example. The user can judge whether the leakage test function is normal or not according to the indication of the indicator 20.

Alternatively, the test button 10 is located at one side of the indicator 20 in a first direction, and the leakage switch 30 is located at one side of the indicator 20 in a second direction, the first direction and the second direction being different.

As shown in fig. 1 and 2, the first direction and the second direction may be perpendicular or approximately perpendicular. Of course, the first direction and the second direction are perpendicular or approximately perpendicular, which is not a limitation of the present application, and in other embodiments, the first direction and the second direction may be disposed at an angle.

Optionally, at least part of the indicator 20 is a light guide; the light guide is used for guiding the optical signal on the circuit board 300 of the switch or the electrical unit to the indicator 20, so that the opening indication mark of the indicator 20 is displayed as the optical signal mark when the switch is closed or opened and/or the fault occurs.

In this way, the indicator 20 will indicate the closing or opening and/or fault condition in the form of an optical signal. For example, the switch-off can be displayed by an optical signal in the form of red light.

When the indicator 20 is a light guide, the light guide may be used to guide the optical signal on the circuit board 300, so that the optical signal is transmitted to the indicator portion 22 (the indicator portion 22 will be described in detail below) of the indicator 20, and the optical signal is indicated by the indicator portion 22.

In addition, it should be noted that the indicator 20 of the indicating mechanism provided in the present application may be used for a brake-off indication, a brake-on indication, and a fault indication (where the fault indication may be an indication during a leakage test or an indication during a leakage fault), which is not limited in this application. For ease of understanding and description, the indicator 20 will be primarily exemplified below as an electrical leakage fault test indicator.

In this embodiment, the test button 10 may include a first body 11 having a through hole 111 and an acting portion 12 connected to the first body 11, the indicator 20 includes a second body 21 and an indicating portion 22 connected to the second body 21, and at least the indicating portion 22 is disposed through the through hole 111; the test button 10 is driven to move towards the direction approaching the indicator 20, the action part 12 can act on the electric leakage switch 30, and the electric leakage switch 30 is used for controlling the opening of the electric leakage breaker; the indication part 22 is used for displaying indication marks when the leakage switch 30 drives the leakage breaker to switch on or off and/or to fail.

It should be noted that the second body 21 may be used as the light guide portion of the indicator 20.

Referring to fig. 1 and 2, the indication mechanism provided in the present application includes a test button 10, an indicator 20 and a leakage switch 30. One end of the indicator 20 is inserted into the through hole 111 of the test button 10, and the other end extends out from the inside of the test button 10. The electric leakage switch 30 is located at one side of the test button 10 and below the indicator 20, and the test button 10 moves towards the electric leakage switch 30 and acts on the electric leakage switch 30, so that the electric leakage switch 30 sends out a control signal to control the electric leakage breaker to switch off. After the leakage breaker 30 sends out a control signal to switch off, the indicator 20 can display a switch-off indication mark.

The test button 10 includes a first body 11 and an action portion 12, as shown in fig. 2 and 3. The first body 11 is provided with a through hole 111, and the through hole 111 is used for allowing one end of the indicator 20 to pass through. The acting portion 12 is located at one side of the first body 11 near the leakage switch 30, and the acting portion 12 is used for acting on the leakage switch 30 to make the leakage switch 30 send out a control signal to control the leakage breaker to break.

The first body 11 includes a first portion penetrating the base 200 of the earth leakage breaker and a second portion located inside the base 200, wherein the first portion and the second portion are connected. In this embodiment, referring to fig. 2 and 3, the radial dimension of the first portion is smaller than that of the second portion, so that a surface of the second portion, which is close to the first portion, can be attached to the inner wall surface of the base 200.

The indicator 20 is located at one side of the test button 10, and the indicator 20 is located in the base 200. In the present embodiment, the indicator 20 includes a second body 21 and an indicator portion 22, wherein the indicator portion 22 is located at a side of the second body 21 near the test button 10.

In the present embodiment, the indicator 20 may be provided by penetrating only the indicator portion 22 into the through hole 111, or may be provided by penetrating the indicator portion 22 and a part of the second body 21 into the through hole 111. According to the electric leakage circuit breaker, the part of the indicating part 20, at least the indicating part 22, is arranged in the through hole 111 in a penetrating mode, so that the test button 10 and the indicating part 20 can be combined together, the whole volume of the indicating mechanism can be effectively reduced through the test button 10 and the indicating part 20 which are combined together, the occupied space of the indicating mechanism on the electric leakage circuit breaker can be saved, and the electric leakage circuit breaker using the indicating mechanism can be applied to a scene with corresponding limitation on small volume and space position.

The indication part 22 is used for displaying a brake-off indication mark when the leakage switch 30 drives the leakage breaker to brake off. Specifically, the indication type of the leakage indication mark is not limited, and a person skilled in the art can set the indication mark as required, and in this embodiment, the indication mark is an optical signal indication, where the indication part 22 can emit a red light signal indication when the leakage switch 30 controls the leakage breaker to switch off.

The drain switch 30 is located at one side of the test button 10, and the drain switch 30 is located in the base 200. The test button 10 moves toward the leakage switch 30 and acts on the leakage switch 30, and the leakage switch 30 can be used to control the opening of the leakage breaker.

In the present embodiment, the leakage switch 30 is electrically connected to the circuit board 300 of the leakage breaker.

Referring to fig. 4 and 5, optionally, the test button 10 further includes a support stand 13 connected to the first body 11, and the support stand 13 is located below the through hole 111; the indicator 20 is located on the support table 13.

One end of the supporting table 13 is connected to a surface of the first body 11 near the indicator 20, and the other end extends from the first body 11 toward the indicator 20. The orthographic projection of the support table 13 on the first body 11 is positioned below the through hole 111, so that the support table 13 can be used for supporting the indicator 20.

Here, the specific shape of the support table 13 is not limited in this application. Optionally, the side of the support table 13 adjacent to the indicator 20 is adapted to the side of the indicator 20 adjacent to the support table 13. Thus, the support table 13 can provide a good supporting effect.

Also, in the present embodiment, the support stand 13 is located above the leakage switch 30, and the positional relationship between the support stand 13 and the leakage switch 30 includes at least one of the following:

a partial gap is arranged between the supporting table 13 and the leakage switch 30;

there is no gap between the support table 13 and the leakage switch 30.

When a partial gap is provided between the support table 13 and the leakage switch 30, in this way, the lower surface of the support table 13 does not affect the leakage switch 30 when the test button 10 moves toward the leakage switch 30.

When a part of the gap is provided between the support table 13 and the leakage switch 30, the size of the gap is not limited in this application, and a person skilled in the art can select the size of the gap according to the actual situation.

To achieve foolproof of the indicator 20 and the test button 10 when installed. Alternatively, as shown in fig. 4 and 6, the inner wall of the through hole 111 has a first inner wall surface 1111 and a second inner wall surface 1112; the portion of the indicator 20 penetrating the through hole 111 has a first outer wall surface fitting the first inner wall surface 1111 and a second outer wall surface 23 fitting the second inner wall surface 1112; the first inner wall surface 1111 is a plane, and the second inner wall surface 1112 is a curved surface.

In this way, the indicator 20 can be mounted in the through hole 111 of the test button 10 only when the first outer wall surface of the indicator 20 is bonded to the first inner wall surface 1111 of the through hole 111 and the second outer wall surface 23 is bonded to the second inner wall surface 1112 of the through hole 111, and the indicator 20 cannot be mounted when the indicator 20 is reversely mounted, so that fool-proofing of the indicator 20 and the test button 10 at the time of mounting can be realized.

In addition, in this embodiment, optionally, the outer periphery of the first body 11 has two first limiting surfaces 112 disposed opposite to each other, the two first limiting surfaces 112 are arranged along the radial direction of the through hole 111, and the two first limiting surfaces 112 are used to cooperate with the base 200 of the leakage breaker to radially limit the test button 10.

That is, the two first limiting surfaces 112 are located at opposite sides of the first body 11, and the two first limiting surfaces 112 are configured to cooperate with the mating surface of the base 200 to radially limit the test button 10, so that the test button 10 can only move axially, but cannot rotate radially.

The shape of the two first limiting surfaces 112 is not particularly limited, as long as the two first limiting surfaces 112 and the base 200 cooperate to radially limit the test button 10.

With continued reference to fig. 1-3, the indicating mechanism optionally further includes a return spring 40, the return spring 40 including at least one of:

for example, the reset spring 40 has one end acting on the test button 10 and the other end acting on the base 200 of the earth leakage breaker; the return spring 40 stores energy when the test button 10 is driven to move in a direction approaching the indicator 20.

One end of the reset spring 40 acts on the test button 10, and the other end acts on the base 200 of the leakage breaker, so that when the test button 10 is driven to move in a direction approaching the indicator 20, the reset spring 40 can store energy, and when the test button 10 is released from being driven, the reset spring 40 can drive the test button 10 to reset under the action of energy release.

As another example, referring to fig. 2 and 3, the return spring 40 includes a spring body 41 and an extension 42 connected to one end of the spring body 41, the extension 42 is located between the spring body 41 and the test button 10, and an orthographic projection of the spring body 41 on the test button 10 is located inside the extension 42.

This application is through setting up reset spring 40 to including the special-shaped structure of spring body 41 and extension 42, so, the counter-force balance problem of test button 10 atress under different coaxial state can be solved to special-shaped reset spring 40.

Also, optionally, as shown in fig. 4 and 5, the test button 10 further includes a limiting post 14 connected to the first body 11, and the spring body 41 is sleeved on the outer periphery of the limiting post 14.

The limiting post 14 is located on one side of the first body 11 near the indicator 20, so that the limiting post 14 can form a certain support for the spring body 41.

Of course, in addition to the above-mentioned limit post 14 being connectable to the first body 11, in other embodiments, as shown in fig. 7 and 9, the limit post 14 may be connected to a side of the second body of the indicator 20 facing away from the indication portion 22.

In addition, in the present embodiment, as shown in fig. 1, an end of the spring body 41 away from the extension section 42 of the present application abuts against the base 200, specifically, abuts against the boss 210 of the base 200, and the boss 210 is protruding from a surface of the base 200 close to the circuit board 300 and protrudes through the circuit board 300.

In one embodiment, the relationship between the center axis of the test button 10 and the center axis of the spring body 41 includes at least one of: not collinear; at least partially collinear.

When the central axis of the test button 10 and the central axis of the spring body 41 are not collinear, the central axis of the spring body 41 may be located on one side of the central axis of the test button 10 close to the circuit board 300 (i.e., the central axis of the spring body 41 is located below the central axis of the test button 10), so that the extension section 42 will correspondingly move in a direction close to the circuit board 300, and at this time, the downward movement of the extension section 42 can save the space of the upper half of the test button 10, which can facilitate the layout of other parts in the space.

Of course, in another embodiment, the central axis of the test button 10 and the central axis of the spring body 41 may be collinear. At this time, the processing of the return spring 40 is simpler and the assembly can be facilitated, with respect to the fact that the center axis of the test button 10 and the center axis of the spring body 41 are not collinear. In practical applications, those skilled in the art may choose the central axes of the spring body 41 and the test button 10 to be arranged in line or not in line according to practical requirements, which the present application does not limit.

In this embodiment, as shown in fig. 8 and 9, the supporting table 13 may further have a stopper 131 protruding toward the direction approaching the indicator 20, where the stopper 131 has a second stopper surface 1311, and correspondingly, the indicator 20 has a first mating surface 24 matching the second stopper surface 1311. The first mating surface 24 and the second limiting surface 1311 are configured to limit the indicator 20.

As shown in fig. 7 and 8, the second limiting surface 1311 may be disposed obliquely, that is, a clamp (an included angle greater than 90 ° in fig. 8) is disposed between the second limiting surface 1311 and the supporting table.

In another aspect of the present utility model, there is provided an earth leakage breaker including the above-described indication mechanism. The specific structure and the beneficial effects of the indicating mechanism are described and illustrated in detail in the foregoing, so that the disclosure is omitted herein.

The above description is only of alternative embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Claims (10)

1. An indicating mechanism is characterized by comprising a test button (10), an indicating piece (20) and a leakage switch (30); the indicator (20) is at least partially arranged in the test button (10) in a penetrating way.

2. The indication mechanism of claim 1, wherein the test button (10) is located on a side of the indicator (20) in a first direction, the leakage switch (30) is located on a side of the indicator (20) in a second direction, the first direction and the second direction being different;

and/or at least part of the indicator (20) is a light guide; the light guide piece is used for guiding the optical signal on the circuit board (300) of the switch or the electric unit to the indicator piece (20), so that the indicator piece (20) indicates the mark to be displayed in the form of optical signal mark when the switch is closed or opened and/or the fault occurs.

3. The indicating mechanism according to claim 1, wherein the test button (10) comprises a first body (11) having a through hole (111) and an acting portion (12) connected to the first body (11), the indicator (20) comprises a second body (21) and an indicating portion (22) connected to the second body (21), and at least the indicating portion (22) is inserted into the through hole (111);

the test button (10) is driven to move towards a direction approaching the indicator (20), the action part (12) acts on the electric leakage switch (30), and the electric leakage switch (30) is used for controlling the electric leakage breaker to open; the indicating part (22) is used for displaying an indicating mark when the electric leakage switch (30) drives the electric leakage breaker to switch on or off and/or to break down.

4. An indication mechanism according to claim 3, characterized in that the test button (10) further comprises a support table (13) connected to the first body (11), the support table (13) being located below the through hole (111); the indicator (20) is located on the support table (13).

5. The indicating mechanism according to claim 4, wherein the support table (13) is located above the electric leakage switch (30), and the positional relationship between the support table (13) and the electric leakage switch (30) includes at least one of:

a partial gap is arranged between the supporting table (13) and the leakage switch (30);

there is no gap between the support table (13) and the leakage switch (30).

6. The indication mechanism according to claim 3, wherein an inner wall of the through hole (111) has a first inner wall surface (1111) and a second inner wall surface (1112); the indicator (20) is provided with a first outer wall surface which is matched with the first inner wall surface (1111) and a second outer wall surface (23) which is matched with the second inner wall surface (1112) at a part penetrating through the through hole (111); the first inner wall surface (1111) is a plane, and the second inner wall surface (1112) is a curved surface.

7. An indication mechanism according to claim 3, wherein the outer periphery of the first body (11) is provided with two first limiting surfaces (112) which are oppositely arranged, the two first limiting surfaces (112) are arranged along the radial direction of the through hole (111), and the two first limiting surfaces (112) are used for being matched with a base (200) of the leakage breaker to radially limit the test button (10).

8. The indicating mechanism according to any one of claims 3 to 7, further comprising a return spring (40), the return spring (40) comprising at least one of:

one end of the reset spring (40) acts on the test button (10) and the other end acts on a base (200) of the leakage breaker; -said return spring (40) stores energy when said test button (10) is driven in a direction approaching said indicator (20);

the reset spring (40) comprises a spring body (41) and an extension section (42) connected with one end of the spring body (41), the extension section (42) is located between the spring body (41) and the test button (10), and the orthographic projection of the spring body (41) on the test button (10) is located in the extension section (42).

9. The indication mechanism according to claim 8, wherein the test button (10) further comprises a limit post (14) connected to the first body (11), and the spring body (41) is sleeved on the periphery of the limit post (14);

and/or the relation between the central axis of the test button (10) and the central axis of the spring body (41) comprises at least one of the following:

not collinear;

at least partially collinear.

10. A circuit breaker comprising an indication mechanism according to any one of claims 1 to 9.