CN217507158U

CN217507158U - Micro-gap switch subassembly and circuit breaker suitable for circuit breaker

Info

Publication number: CN217507158U
Application number: CN202123363587.7U
Authority: CN
Inventors: 林长青; 涂占炜
Original assignee: Schneider Electric Xiamen Switch Equipment Co ltd
Current assignee: Schneider Electric Xiamen Switch Equipment Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-09-27
Anticipated expiration: 2031-12-29

Abstract

A micro-switch assembly adapted for use with a circuit breaker, the circuit breaker including a circuit breaker housing and an operating mechanism rotating spindle, the operating mechanism rotating spindle being rotationally connected to the micro-switch assembly; the micro-switch assembly includes a switch housing; the internal accommodating space of the switch shell accommodates functional components of the microswitch assembly; the rotation of the operating mechanism rotating main shaft changes the state signal of the microswitch component through the functional component; the switch housing is detachably and integrally mounted to the circuit breaker housing; the state signal of the microswitch component corresponds to the rotation state of the rotating main shaft of the operating mechanism. A circuit breaker comprising a microswitch assembly as described above.

Description

Micro-gap switch subassembly and circuit breaker suitable for circuit breaker

Technical Field

The present disclosure relates to a microswitch assembly suitable for use in a circuit breaker. The present disclosure also relates to a circuit breaker including the microswitch assembly.

Background

In the prior art, the components connected to the operating mechanism of the circuit breaker and associated with the microswitch are mounted in discrete manner. During assembly, the respective components, such as the drive cam, the drive arm, the microswitch, the connecting line and the electrical connection terminals, are mounted one after the other on the support of the circuit breaker. The assembly time is long, the design dimension chain length, the assembly tolerance fluctuation is large and the function is unstable in the installation process. In addition, in the actual installation process, when the mechanical life test of the mechanism occurs, impurities such as scrap iron and the like fall on the micro switch or the electrical connection point, so that the function is abnormal.

SUMMERY OF THE UTILITY MODEL

In order to solve one or more technical problems in the prior art, the design scheme according to the disclosure provides a micro-switch assembly suitable for a circuit breaker, wherein the circuit breaker comprises a circuit breaker shell and an operating mechanism rotating main shaft.

The operating mechanism rotating spindle is rotationally connected to the microswitch assembly.

The micro-switch assembly includes a switch housing.

The interior receiving space of the switch housing receives functional components of the microswitch assembly.

The rotation of the operating mechanism rotating main shaft changes the state signal of the micro-switch assembly through the functional component.

The switch housing is removably mounted to the circuit breaker housing as a whole.

The state signal of the microswitch component corresponds to the rotation state of the rotating main shaft of the operating mechanism.

According to the above-described design of the present disclosure, the switch case includes a case base and a case side plate.

The housing base and the housing side plate are connected together in a sealing fit and together form the inner receiving space of the switch housing.

According to the above-mentioned design of the present disclosure, a housing connection portion is provided on the switch housing. The switch housing is detachably connected to the circuit breaker housing through the housing connecting portion.

According to one aspect of the disclosure, the functional components include an active cam, a micro switch, a connecting wire, and an electrical connection terminal disposed in the interior receiving space.

The operating mechanism rotating main shaft is connected to the driving cam and drives the driving cam to rotate.

The cam profile of the active cam directly drives the microswitch.

Movement of the active cam actuates the microswitch, causing the microswitch to generate its status signal.

According to the above aspect of the present disclosure, the driving cam is provided with a cam through-hole, and a spline structure is provided on an inner circumferential surface of the cam through-hole.

And the spline structure of the cam through hole is matched with the spline structure arranged on the rotating main shaft.

According to the above aspect of the present disclosure, the driving cam is further provided with a first cam connecting portion having a cylindrical shape and a second cam connecting portion having a cylindrical shape.

The central axes of the first cam connecting part and the second cam connecting part are arranged coaxially with the rotation axis of the driving cam.

According to the above aspect of the present disclosure, the first cam connecting portion is rotatably fitted in the case base through hole of the case base, and the second cam connecting portion is rotatably fitted in the case side plate through hole of the case side plate, so that the active cam is rotatably held between the case base and the case side plate.

According to the above aspect of the present disclosure, the active cam has at least one cam profile.

The first radius r1 of each cam profile of the active cam is less than the second radius r2 of each cam profile of the active cam.

According to the above aspect of the present disclosure, the micro switch includes a switch lever, a switch button, a switch output terminal, and a micro switch housing.

The micro switch is detachably mounted inside the housing base.

The switch swing rod is rotatably arranged on the micro-switch shell.

The microswitch housing holds a switch button and a switch output terminal thereon.

The cam profile of the driving cam can be in contact fit with the switch swing rod.

According to the above aspect of the present disclosure, the rotation of the switch lever can press the switch button and release the switch button.

The pressing and releasing of the switch button transmits a state signal of the corresponding micro switch to the switch output terminal and then to the electrical connection terminal through the connection wire.

According to the above aspect of the present disclosure, a grill is provided inside the housing base.

The length and height of the barrier are set to space the active cam as a moving part from the electrical connection terminal and the connection wire as a stationary part with respect to each other.

According to the above aspect of the present disclosure, when the active cam rotates to the position of the first radius r1 of the cam profile thereof, the active cam does not press the switch rocker of the micro switch, and the switch rocker does not press the switch button. The electric connecting terminal receives a state signal of the microswitch through the connecting lead.

When the driving cam rotates to a position with a second radius r2 of the cam profile of the driving cam, the driving cam presses the switch swing rod of the microswitch, the switch swing rod presses the switch button, and the electric connecting terminal receives another state signal of the microswitch through a connecting wire.

According to the above aspect of the present disclosure, when the driving cam rotates to the first radius r1 of the cam profile thereof, the switch rocker and the switch button rely on their own reset force without the need for a reset spring to reset.

According to another aspect of the present disclosure, the functional components include an active cam, a transmission component, a micro switch, a connecting wire, and an electrical connection terminal disposed in the internal receiving space of the switch housing.

The cam profile of the driving cam directly drives the transmission component to move.

Movement of the transmission member actuates the microswitch, causing the microswitch to generate its status signal.

According to the above another aspect of the present disclosure, the driving cam is provided with a cam through-hole, and a spline structure is provided on an inner circumferential surface of the cam through-hole.

According to the above another aspect of the present disclosure, the driving cam is further provided with a first cam connection part having a cylindrical shape and a second cam connection part having a cylindrical shape.

According to the above-mentioned another aspect of the present disclosure, the first cam connecting portion is rotatably fitted in the case base through hole of the case base, and the second cam connecting portion is rotatably fitted in the case side plate through hole of the case side plate, so that the active cam is rotatably held between the case base and the case side plate.

According to the above another aspect of the present disclosure, the active cam has at least one cam profile.

According to the above another aspect of the present disclosure, the transmission member includes a transmission member first fitting portion, a transmission member second fitting portion, and a transmission member connecting portion.

The transmission member connecting portion is pivotably connected to a first base connecting portion provided on the housing base.

The cam profile of the driving cam can be in contact fit with the first matching part of the transmission component.

The transmission component second matching part can be in contact matching with the microswitch.

According to the above another aspect of the present disclosure, the transmission member is made of a plastic material.

The second fitting part of the transmission part has a through-hole design and/or the transmission part has a hollow-out part or a recess.

According to the above another aspect of the present disclosure, the micro switch includes a switch lever, a switch button, a switch output terminal, and a micro switch housing.

The micro switch is detachably mounted inside the housing base.

The switch swing rod is rotatably arranged on the micro-switch shell.

The second matching part of the transmission part can be in contact matching with the switch swing rod.

According to another aspect of the disclosure, the rotation of the switch rocker can press the switch button and release the switch button.

According to another aspect of the present disclosure, a grill is provided inside the housing base.

The length and height of the barrier are set to space the active cam and the transmission member as moving members and the electrical connection terminals and the connection wires as stationary members with respect to each other.

According to the other aspect of the disclosure, when the driving cam rotates to the position of the first radius r1 of the cam profile, the driving cam does not press the first engaging portion of the transmission member, the transmission member is in the release position, the second engaging portion of the transmission member does not press the switch rocker of the microswitch, and the switch rocker does not press the switch button. The electric connecting terminal receives a state signal of the microswitch through the connecting lead.

When the driving cam rotates to the position of a second radius r2 of the cam profile of the driving cam, the driving cam presses the first matching part of the transmission part, the transmission part is located at the pressing position of the transmission part, the second matching part of the transmission part presses the switch swing rod of the microswitch, the switch swing rod presses the switch button, and the electric connecting terminal receives another state signal of the microswitch through a connecting lead.

According to another aspect of the disclosure, when the active cam rotates to the first radius r1 of the cam profile, the transmission component can rely solely on the reset force from the interior of the microswitch without the need for a reset spring to reset.

The design scheme according to the present disclosure also provides a circuit breaker, wherein the circuit breaker comprises the micro switch assembly.

The technical scheme based on the disclosure has the following technical advantages:

1. the modular design, be about to initiative cam, drive disk assembly, micro-gap switch, connecting wire and electric connection terminal integrate in advance to a switch casing, reduce the influence of external environment to micro-gap switch work.

2. The dustproof design overcomes the defect that the function of a long-service-life mechanism in practice is normal due to the fact that scrap iron falls on a micro-switch mechanism or an electric connecting terminal contact in the moving process.

3. The function adaptability is strong, and the modularized micro switch assembly is very easy to obtain different functions, and only corresponding driving cams, transmission parts or micro switches need to be replaced. For example, in practice, a plurality of cam profiles or mutually independent transmission components can be designed according to design requirements, so as to obtain a static signal or a dynamic pulse signal of the microswitch. In addition, different types of micro switches can be selected according to the electrical parameters required by the design, so that different electrical performances can be obtained.

4. The dynamic and static separation design is that moving parts such as a driving cam and a transmission part are separated from static parts such as an electric connecting terminal and a connecting lead by a barrier arranged on the switch shell, so that mutual interference and abrasion are avoided.

5. The integrated design, namely the switch shell which is integrated in advance (wherein the active cam, the transmission component (optional), the micro switch, the connecting lead and the electric connecting terminal are installed in advance) is connected with the breaker shell of the breaker, so that the technical problems of complex assembly, long size chain, large assembly tolerance fluctuation and unstable function are solved.

6. The novel reset spring of modular micro-gap switch subassembly's inside need not additionally to design, with the help of the inside power that resets of micro-gap switch can, the function is reliable and longe-lived.

So that the manner in which the disclosure is made in detail herein can be better understood, and in which the contributions to the art may be better appreciated, the disclosure has been summarized rather broadly. There are, of course, embodiments of the disclosure that will be described below and which will form the subject matter of the claims appended hereto.

As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present disclosure. It is important, therefore, that the appended claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present disclosure.

Drawings

The present disclosure will be better understood and its advantages will become more apparent to those skilled in the art from the following drawings. The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations and are not intended to limit the scope of the present disclosure.

Fig. 1 illustrates a perspective assembly view of a microswitch assembly suitable for use in a circuit breaker according to the present disclosure;

FIG. 2 shows a schematic plan view of a microswitch assembly according to the present disclosure with the active cam rotated to its first radius r1 position, with the housing side plates omitted for clarity;

FIG. 3 shows a schematic plan view of a microswitch assembly according to the present disclosure with the active cam rotated to its second radius r2 position, with the housing side plates omitted for clarity;

fig. 4-6 illustrate one embodiment of an active cam according to the present disclosure;

figures 7-8 illustrate another embodiment of an active cam according to the present disclosure;

FIG. 9 shows a schematic perspective view of a microswitch according to the present disclosure;

fig. 10 shows a perspective schematic view of a housing base of a switch housing according to the present disclosure;

fig. 11 shows a perspective schematic view of a housing side plate of a switch housing according to the present disclosure;

FIG. 12 illustrates a perspective view of a transmission component according to the present disclosure.

Detailed Description

Specific embodiments according to the present disclosure are described in detail below with reference to the accompanying drawings.

Fig. 1 shows a microswitch assembly 1 suitable for use in a circuit breaker (not shown). The circuit breaker includes a circuit breaker housing (not shown) and an operating mechanism rotating spindle (not shown).

The operating mechanism rotating spindle is rotationally connected to the microswitch assembly 1.

The microswitch assembly 1 is removably mounted integrally to the circuit breaker housing.

The rotation of the operating mechanism rotating main shaft changes the state signal of the micro switch assembly 1, wherein the state signal of the micro switch assembly 1 corresponds to the rotating state of the operating mechanism rotating main shaft.

The microswitch assembly 1 comprises a switch housing 2. A housing connection part 3 is provided on the switch housing 2. The switch case 2 is detachably connected to a circuit breaker case (not shown) of the circuit breaker through the case connection part 3.

In fig. 1, the housing connection 3 is, for example, a connection lug. The switch housing 2 is detachably connected to the circuit breaker housing of the circuit breaker by means of the connecting lug and by means of a fastening (not shown).

As shown in fig. 1, 10, and 11, the switch case 2 includes a case base 4 (see fig. 10) and a case side plate 5 (see fig. 11). The housing base 4 and the housing side plate 5 are connected together in a sealing fit and together form an inner accommodating space of the switch housing 2. The interior receiving space receives functional components of the microswitch assembly. The rotation of the operating mechanism rotating main shaft changes the state signal of the micro-switch assembly 1 through the functional component.

It will be understood by those skilled in the art that the closing and opening of the circuit breaker can be achieved by the rotation of a rotating main shaft (not shown) of an operating mechanism (not shown) of the circuit breaker. The rotating spindle of the operating mechanism of the circuit breaker is arranged through the switch housing 2 and is rotatably connected to the switch housing 2. The microswitch assembly 1 is arranged for detecting a rotational state of the rotating main shaft which is directly related to a closing state and an opening state of the circuit breaker.

As shown in fig. 2, the microswitch assembly 1 further comprises an active cam 6, a transmission member 7, a microswitch 8, a connecting wire 9 and an electrical connection terminal 10. The active cam 6, the transmission member 7 (optional), the microswitch 8, the connecting lead 9 and the electrical connection terminal 10, which are functional components of the microswitch assembly, are all disposed in the inner accommodation space of the switch housing 2 and are held therein. The microswitch 8 is in signal connection with the electric connecting terminal 10 through the connecting lead 9. The housing side plates 5 are omitted from fig. 2 for clarity.

The rotating main shaft of the operating mechanism of the circuit breaker is connected to the driving cam 6 and drives the driving cam 6 to rotate. The rotational axis of the rotating spindle is arranged coaxially to the rotational axis of the drive cam 6.

Fig. 4 to 8 show a specific structure of the active cam 6 according to the present disclosure.

The driving cam 6 is provided with a cam through hole 6-1, and a spline structure is provided on an inner circumferential surface of the cam through hole 6-1. The spline structure of the cam through-hole 6-1 is fitted with a spline structure (not shown) provided on the rotating main shaft.

The driving cam 6 is further provided with a first cam coupling part 6-2 (shown in fig. 5) having a cylindrical shape and a second cam coupling part 6-3 (shown in fig. 4) having a cylindrical shape, and the central axes of the first cam coupling part 6-2 and the second cam coupling part 6-3 are arranged coaxially with the rotational axis of the driving cam 6.

The first cam link portion 6-2 is rotatably fitted in the case base through-hole 4-1 of the case base 4 (shown in fig. 10), and the second cam link portion 6-3 is rotatably fitted in the case side plate through-hole 5-1 of the case side plate 5 (shown in fig. 11), so that the driving cam 6 is rotatably held between the case base 4 and the case side plate 5.

The cam profile of the active cam 6 has a first radius r1 and a second radius r2, the first radius r1 being smaller than the second radius r 2.

The cam profile of the active cam 6 has at least one cam step 6-4.

For example, one camming step 6-4 is shown in fig. 4-6, with the active cam 6 having only one cam profile. Fig. 7 and 8 show two cam steps 6-4 spaced 180 ° apart in the direction of the cam profile of the drive cam 6, the drive cam 6 having two cam profiles. It will be appreciated by those skilled in the art that the active cam 6 may have three or more cam profiles as desired.

As shown in fig. 12, the transmission member 7 includes a transmission member first fitting portion 7-1, a transmission member second fitting portion 7-2, and a transmission member connecting portion 7-3.

The transmission member connection portion 7-3 is pivotably connected to a first base connection portion 4-2 (see fig. 10) provided on the housing base 4. For example, the transmission member connection portion 7-3 may comprise a transmission member through hole 7-4, while the first base connection portion 4-2 is a pin that may fit in the transmission member through hole 7-4, i.e. the transmission member 7 is rotatable around the first base connection portion 4-2.

The cam profile of the driving cam 6 can be in contact fit with the transmission component first fitting part 7-1. The transmission member first mating portion 7-1 is, for example, but not limited to, an inclined plane.

The second matching part 7-2 of the transmission component can be matched with the micro switch 8 in a contact way, wherein the outer surface of the second matching part 7-2 of the transmission component is in a circular arc shape, for example but not limited.

The transmission part 7 is made of light engineering plastics. In order to further reduce the weight of the transmission element, the second transmission element fitting part 7-2 of the transmission element 7 has a through-hole design and/or the transmission element 7 has a cutout or recess.

As shown in FIG. 9, the micro switch 8 comprises a switch swing rod 8-1, a switch button 8-2, a switch output terminal 8-3 and a switch shell 8-4. The microswitch 8 is removably mounted within the switch housing base 4, such as by mounting methods known in the art, such as, but not limited to, snap-fit mounting.

The switch swing rod 8-1 is rotatably arranged on the switch shell 8-4. The switch case 8-4 holds the switch knob 8-2 and the switch output terminal 8-3 thereon. The second matching part 7-2 of the transmission part can be in contact matching with the switch swing rod 8-1.

The rotation of the switch swing rod 8-1 can press the switch button 8-2 and release the switch button 8-2. The pressing and releasing of the switch button 8-2 transmits the corresponding microswitch status signal to the switch output terminal 8-3 and then to the standard electrical connection terminal 10 via the connection lead 9 (see fig. 2).

As shown in fig. 2, 3 and 10, a grill 4-3 is provided inside the housing base 4. The length and height of the grids 4-3 are set to space the moving parts such as the driving cam 6 and the transmission part 7 and the static parts such as the electric connection terminal 10 and the connection lead wire 9 from each other, thereby avoiding mutual interference and contact abrasion between them.

As shown in fig. 2, when the driving cam 6 rotates to the position of the first radius r1, the driving cam 6 does not press the first engaging portion 7-1 of the transmission member 7, the transmission member 7 is at the release position, the second engaging portion 7-2 of the transmission member 7 does not press the switch swing link 8-1 of the micro switch 8, and the switch swing link 8-1 does not press the switch button 8-2. Because the transmission component 7 is made of light engineering plastics, the transmission component 7 can move upwards to reset by relying on the reset force in the microswitch 8 (such as the reset force of the switch swing rod 8-1 and the switch button 8-2) without a reset spring. At this time, the standard electrical connection terminal 10 can receive a status signal of the microswitch 8 through the connection lead 9.

As shown in fig. 3, when the driving cam 6 rotates to the second radius r2 position, the driving cam 6 presses the first engaging portion 7-1 of the transmission member 7, the transmission member 7 is located at the pressing position, the second engaging portion 7-2 of the transmission member 7 presses the switch swing link 8-1 of the actuating microswitch 8, and the switch swing link 8-1 presses the switch button 8-2, which can change the states of a plurality of microswitches 8 at the same time. At this point, the standard electrical connection terminal 10 can receive a further status signal of the microswitch 8 via the connecting line 9.

The state signal of the microswitch 8 in fig. 3 differs from the state signal of the microswitch 8 in fig. 2.

The state signal of the microswitch assembly 1 can be used to detect the rotation state of the rotating main shaft, which is directly related to the closing state and the opening state of the circuit breaker.

The above embodiments based on the present disclosure have the following technical advantages:

1. the modular design, namely the active cam 6, the transmission part 7, the microswitch 8, the connecting lead 9 and the electric connecting terminal 10 are integrated into a switch shell in advance, so that the influence of the external environment on the operation of the microswitch is reduced.

5. The integrated design, namely the switch shell (wherein the active cam, the transmission part, the micro switch, the connecting lead and the electric connecting terminal are installed in advance) which is integrated in advance is connected with the breaker shell of the breaker, so that the technical problems of complex assembly, long size chain, large assembly tolerance fluctuation and unstable function are solved.

In the above-described technical embodiment using the transmission member 7, the width of the active cam 6 can be unaffected by the number of micro-switches 8. For example, when there are 5 microswitches each having a width of about 10mm, if the transmission member 7 is not used, the width of the driving cam 6 has to be increased to at least 40mm, which is not reasonable in terms of cost and forming process; if the transmission member 7 is used, the width of the driving cam 6 may not be increased, and only the width of the second engagement portion 7-2 of the transmission member 7 is adjusted.

Although in the solution with a transmission member 7 it is possible to use an active cam 6 with a smaller cam profile (i.e. to reduce the size of the cam profile of the active cam 6) and the width of the active cam 6 may be unaffected by the number of microswitches 8, a person skilled in the art may not use a transmission member 7 for the purpose of simplifying the microswitch assembly 1, but drive the microswitch 8 (i.e. the switch rocker 8-1) directly by means of the cam profile of the active cam 6. The width and cam profile of the active cam 6 described herein refer to the thickness of the active cam (as shown in fig. 4), rather than to the profile that forms the stroke of the active cam.

In the case of no transmission member 7, when the driving cam 6 rotates to the position of the first radius r1, the driving cam 6 does not press the micro switch 8 (i.e. the switch rocker 8-1). The switch oscillating bar 8-1 and the switch button 8-2 move upwards to reset without a reset spring depending on the reset force in the micro switch 8 (such as the reset force of the switch oscillating bar 8-1 and the switch button 8-2). At this time, the standard electrical connection terminal 10 can receive a status signal of the micro switch 8 through the connection wire 9.

In the case of no transmission member 7, when the driving cam 6 is rotated to its second radius r2 position, the driving cam 6 presses the actuating microswitch 8 (i.e. the switch rocker 8-1), which changes the state of several microswitches 8 at the same time. At this point, the standard electrical connection terminal 10 can receive a further status signal of the microswitch 8 via the connecting line 9.

Those skilled in the art may, for the purpose of further simplifying the microswitch assembly 1, not employ the transmission member 7 and the switch rocker 8-1, but drive the microswitch 8 (i.e. the switch button 8-2) directly by means of the cam profile of the active cam 6.

In the case of not using the transmission member 7 and the switch rocker 8-1, when the driving cam 6 rotates to the position of the first radius r1, the driving cam 6 does not press the micro switch 8 (i.e. the switch button 8-2). The reset spring is not required to reset the switch button 8-2 by means of a reset force inside the micro switch 8 (e.g., a reset force of the switch button 8-2). At this time, the standard electrical connection terminal 10 can receive a status signal of the microswitch 8 through the connection lead 9.

Without the transmission member 7 and the switch rocker 8-1, when the active cam 6 is rotated to its second radius r2 position, the active cam 6 now presses the actuating microswitch 8 (i.e. the switch button 8-2), which changes the state of several microswitches 8 simultaneously. At this point, the standard electrical connection terminal 10 can receive a further status signal of the microswitch 8 via the connecting line 9.

The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the embodiments.

Claims

1. Microswitch assembly (1) suitable for use in a circuit breaker comprising a circuit breaker housing and an operating mechanism rotating spindle, characterized in that,

the operating mechanism rotating main shaft is rotationally connected to the microswitch assembly (1);

the microswitch assembly comprises a switch housing (2);

the internal accommodating space of the switch shell (2) accommodates functional components of the micro-switch assembly;

the rotation of the operating mechanism rotating main shaft changes the state signal of the micro-switch assembly (1) through the functional component;

the switch housing (2) is detachably and integrally mounted to the circuit breaker housing;

the state signal of the microswitch assembly (1) corresponds to the rotation state of the rotating main shaft of the operating mechanism.

2. The microswitch assembly of claim 1,

the switch housing (2) comprises a housing base (4) and a housing side plate (5);

the housing base (4) and the housing side plate (5) are connected together in a sealing fit and together form the inner receiving space of the switch housing (2).

3. The microswitch assembly of claim 2,

a shell connecting part (3) is arranged on the switch shell (2);

the switch housing (2) is detachably connected with the circuit breaker housing through the housing connecting part (3).

4. The microswitch assembly of claim 3,

the functional components comprise an active cam (6), a microswitch (8), a connecting wire (9) and an electrical connecting terminal (10) which are arranged in the inner accommodating space;

the operating mechanism rotating main shaft is connected to the driving cam (6) and drives the driving cam (6) to rotate;

the cam profile of the active cam (6) directly drives the microswitch (8);

the movement of the active cam (6) actuates the microswitch (8), causing the microswitch (8) to generate its status signal.

5. The microswitch assembly of claim 4,

the driving cam (6) is provided with a cam through hole (6-1), and a spline structure is arranged on the inner circumferential surface of the cam through hole (6-1);

and the spline structure of the cam through hole (6-1) is matched with the spline structure arranged on the rotating main shaft.

6. The microswitch assembly of claim 5,

the driving cam (6) is also provided with a first cylindrical cam connecting part (6-2) and a second cylindrical cam connecting part (6-3);

the central axes of the first cam connecting part (6-2) and the second cam connecting part (6-3) are arranged coaxially with the rotation axis of the driving cam (6).

7. The microswitch assembly of claim 6,

the first cam link portion (6-2) is rotatably fitted in a case base through hole (4-1) of the case base (4), and the second cam link portion (6-3) is rotatably fitted in a case side plate through hole (5-1) of the case side plate (5), so that the driving cam (6) is rotatably held between the case base (4) and the case side plate (5).

8. The microswitch assembly of claim 7,

the active cam (6) has at least one cam profile;

the first radius r1 of each cam profile of the active cam (6) is smaller than the second radius r2 of each cam profile of the active cam (6).

9. The microswitch assembly of claim 8,

the microswitch (8) comprises a switch swing rod (8-1), a switch button (8-2), a switch output terminal (8-3) and a microswitch shell (8-4);

the microswitch (8) is detachably mounted inside the housing base (4);

the switch swing rod (8-1) is rotationally arranged on the micro switch shell (8-4);

the microswitch housing (8-4) holds a switch button (8-2) and a switch output terminal (8-3) thereon;

the cam profile of the driving cam (6) can be in contact fit with the switch swing rod (8-1).

10. The microswitch assembly of claim 9,

the rotation of the switch swing rod (8-1) can press the switch button (8-2) and release the switch button (8-2);

the pressing and releasing of the switch button (8-2) transmits the state signal of the corresponding microswitch to the switch output terminal (8-3) and then to the electrical connection terminal (10) through the connection wire (9).

11. The microswitch assembly of claim 4,

a barrier (4-3) is arranged inside the shell base (4);

the length and height of the barrier (4-3) are set so as to space the active cam (6) as a moving part from the electrical connection terminals (10) and the connection leads (9) as a stationary part relative to each other.

12. The microswitch assembly of claim 10,

when the driving cam (6) rotates to a position with a first radius r1 of the cam profile, the driving cam (6) does not press the switch swing rod (8-1) of the microswitch (8), and the switch swing rod (8-1) does not press the switch button (8-2); the electric connecting terminal (10) receives a state signal of the microswitch (8) through the connecting lead (9);

when the driving cam (6) rotates to a position with a second radius r2 of the cam profile, the driving cam (6) presses the switch swing rod (8-1) of the microswitch (8), the switch swing rod (8-1) presses the switch button (8-2), and the electric connecting terminal (10) receives another state signal of the microswitch (8) through a connecting wire (9).

13. The microswitch assembly of claim 3,

the functional components comprise a driving cam (6) arranged in the internal accommodating space of the switch shell (2), a transmission component (7), a microswitch (8), a connecting wire (9) and an electric connecting terminal (10);

the cam profile of the driving cam (6) directly drives the transmission component (7) to move;

the movement of the transmission member (7) actuates the microswitch (8), causing the microswitch (8) to generate its status signal.

14. The microswitch assembly of claim 13,

15. The microswitch assembly of claim 14,

16. The microswitch assembly of claim 15,

17. The microswitch assembly of claim 16,

the active cam (6) has at least one cam profile;

18. The microswitch assembly of claim 17,

the transmission component (7) comprises a first transmission component matching part (7-1), a second transmission component matching part (7-2) and a transmission component connecting part (7-3);

the transmission member connection portion (7-3) is pivotally connected to a first base connection portion (4-2) provided on the housing base (4);

the cam profile of the driving cam (6) can be in contact fit with the first matching part (7-1) of the transmission component;

the second matching part (7-2) of the transmission component can be in contact matching with the microswitch (8).

19. The microswitch assembly of claim 18,

the transmission part (7) is made of plastic material;

the second fitting part (7-2) of the transmission part (7) has a through-hole design and/or the transmission part (7) has a hollow-out or recess.

20. The microswitch assembly of claim 19,

the micro switch (8) comprises a switch swing rod (8-1), a switch button (8-2), a switch output terminal (8-3) and a micro switch shell (8-4);

the microswitch (8) is detachably mounted inside the housing base (4);

the second matching part (7-2) of the transmission part can be in contact matching with the switch swing rod (8-1).

21. The microswitch assembly of claim 20,

22. The microswitch assembly of claim 13,

a barrier (4-3) is arranged in the shell base (4);

the length and height of the barrier (4-3) are set so as to space the active cam (6) and the transmission member (7) as moving members and the electrical connection terminal (10) and the connection wire (9) as stationary members relative to each other.

23. The microswitch assembly of claim 21,

when the driving cam (6) rotates to a position with a first radius r1 of the cam profile of the driving cam, the driving cam (6) does not press the first matching part (7-1) of the transmission part (7), the transmission part (7) is in a release position, the second matching part (7-2) of the transmission part (7) does not press the switch swing rod (8-1) of the microswitch (8), and the switch swing rod (8-1) does not press the switch button (8-2); the electric connecting terminal (10) receives a state signal of the microswitch (8) through the connecting lead (9);

when the driving cam (6) rotates to a position of a second radius r2 of a cam profile of the driving cam, the driving cam (6) presses the first matching part (7-1) of the transmission part (7), the transmission part (7) is located at a pressing position of the transmission part, the second matching part (7-2) of the transmission part (7) presses the switch swing rod (8-1) of the microswitch (8), the switch swing rod (8-1) presses the switch button (8-2), and the electric connecting terminal (10) receives another state signal of the microswitch (8) through a connecting wire (9).

24. The microswitch assembly of claim 23,

when the driving cam (6) rotates to the position of the first radius r1 of the cam profile, the transmission component (7) can only depend on the reset force from the interior of the microswitch (8) without the reset of a reset spring.

25. The microswitch assembly of claim 12,

when the driving cam (6) rotates to a position with a first radius r1 of the cam profile, the switch swing rod (8-1) and the switch button (8-2) are reset by self reset force without a reset spring.

26. A circuit breaker characterized in that it comprises a microswitch assembly (1) according to one of claims 1 to 25.