CN112164632A - Circuit breaker state indicating structure - Google Patents

Abstract

The circuit breaker state indicating structure comprises a base, a handle, a movable contact, a fixed contact, a first microswitch and a second microswitch, wherein the handle and the movable contact are respectively arranged in the base in a swinging manner, and the handle is in driving connection with the movable contact; the handle triggers the first microswitch and the moving contact does not trigger the second microswitch when the brake is switched off, the handle does not trigger the first microswitch and the moving contact triggers the second microswitch when the brake is switched on, and the handle does not trigger the first microswitch and the moving contact does not trigger the second microswitch when the brake is switched off; or the handle does not trigger the first microswitch and the moving contact triggers the second microswitch during opening, the handle triggers the first microswitch and the moving contact does not trigger the second microswitch during closing, and the handle does not trigger the first microswitch and the moving contact does not trigger the second microswitch during tripping. The invention discloses a circuit breaker state indicating structure, which judges three states of closing, opening and tripping of a low-voltage circuit breaker by combining the states of two groups of micro switch contacts, thereby saving the occupied space.

Description

Circuit breaker state indicating structure

Technical Field

The invention relates to the technical field of low-voltage electric appliances, in particular to a circuit breaker state indicating structure.

Background

The low-voltage circuit breaker generally has three states, namely closing, opening and free tripping. The design of the three state indicating structures of closing, opening and free tripping of the existing circuit breaker is that firstly, two microswitches are arranged above a mechanism rotating shaft of a low-voltage circuit breaker to respectively indicate closing and opening states of the circuit breaker, and a microswitch is arranged at a tripping connecting rod of the low-voltage circuit breaker to indicate whether the low-voltage circuit breaker is tripped or not. The space that occupies low voltage circuit breaker's auxiliary contact and warning contact very big like this, because the space in the low voltage circuit breaker is very limited, if adopt current low voltage circuit breaker to set up three micro-gap switch and realize closing a floodgate, separating brake and three kinds of state instructions of dropout, if need auxiliary contact and warning contact again when realizing relevant function, will unable the demand of satisfying because of the space restriction.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a breaker state indicating structure for judging three states of closing, opening and tripping of a low-voltage breaker in a mode of combining the states of two groups of microswitch contacts.

In order to achieve the purpose, the invention adopts the following technical scheme:

a circuit breaker state indicating structure comprises a base, a handle, a movable contact, a fixed contact, a first microswitch and a second microswitch, wherein the handle and the movable contact are respectively arranged in the base in a swinging manner; the handle triggers the first microswitch and the moving contact does not trigger the second microswitch when the brake is switched off, the handle does not trigger the first microswitch and the moving contact triggers the second microswitch when the brake is switched on, and the handle does not trigger the first microswitch and the moving contact does not trigger the second microswitch when the brake is switched off; or the handle does not trigger the first microswitch and the moving contact triggers the second microswitch during opening, the handle triggers the first microswitch and the moving contact does not trigger the second microswitch during closing, and the handle does not trigger the first microswitch and the moving contact does not trigger the second microswitch during tripping.

Preferably, the first micro switch is provided with a first push rod for switching a normally open contact and a normally closed contact of the first micro switch, and the second micro switch is provided with a second push rod for switching a normally open contact and a normally closed contact of the second micro switch; the handle is provided with a first trigger part corresponding to the first push rod, and the first trigger part of the handle drives the first push rod to realize the conversion of the contact state of the first microswitch; and the second trigger part of the moving contact drives the second push rod to realize the switching of the contact state of the second microswitch.

Preferably, the switch further comprises a shell and a circuit board, the shell is mounted in the base, the shell is provided with a mounting groove for mounting the circuit board, the moving contact is located below the handle, the circuit board is mounted in the mounting groove of the shell and located between the handle and the moving contact, the first microswitch is mounted on the top surface of the circuit board and located below the handle, and the second microswitch is mounted on the bottom surface of the circuit board and located above the moving contact.

Preferably, the first trigger part of the handle is in driving connection with a first push rod of the first microswitch through a first deflector rod, the first deflector rod is rotatably mounted on the shell, a first toggle part at one end of the first deflector rod is pressed on the first push rod, and a first linkage part at the other end of the first deflector rod is arranged corresponding to the first trigger part; a first torsion spring is arranged between the first deflector rod and the shell, and two ends of the first torsion spring are connected to the first deflector rod and the shell.

Preferably, the first shifting lever comprises a first shifting portion, a first connecting portion, a first mounting portion and a first linkage portion which are sequentially connected, the first mounting portion is a cylinder with a first axial hole and is sleeved on the first mounting shaft of the shell, the first connecting portion and the first linkage portion are connected to two sides of the outer wall of the first mounting portion and are flush with end faces of two ends of the first mounting portion, and one end of the first shifting portion is vertically connected to the first connecting portion; the spring body of the first torsion spring is sleeved on the first mounting shaft, a first U-shaped pin at one end of the first torsion spring is buckled on the first connecting part, and a first straight pin at the other end of the first torsion spring is clamped into a first limiting groove of the shell.

Preferably, the handle is provided with a guide part for guiding during swinging, and the first trigger part is a protruding structure arranged at the end part of the guide part; the first microswitch is located below the side of the handle, the first driving lever is located right above the first microswitch, and the first linkage portion of the first driving lever is located on the motion track of the first trigger portion.

Preferably, the second trigger part of the moving contact is in driving connection with a second push rod of the second microswitch through a second shift lever, the second shift lever is rotatably mounted on the housing, the second shift part at one end of the second shift lever is pressed on the second push rod, and the second linkage part at the other end of the second shift lever is arranged corresponding to the second trigger part; and a second torsion spring is arranged between the second deflector rod and the shell, and two ends of the second torsion spring are connected to the second deflector rod and the shell.

Preferably, the second shifting lever comprises a second shifting portion, a second connecting portion, a second mounting portion and a second linkage portion which are sequentially connected, the second mounting portion is a cylinder with a second axial hole and is sleeved on a second mounting shaft of the shell, the second connecting portion and the second linkage portion are connected to two sides of the outer wall of the second mounting portion and are flush with end faces of two ends of the second mounting portion, and two sides of the second shifting portion protrude out of two sides of the second connecting portion; the spring body of the second torsion spring is sleeved on the second mounting shaft, a second U-shaped pin at one end of the second torsion spring is buckled on the second connecting part, and a second straight pin at the other end of the second torsion spring is clamped into a second limiting groove of the shell.

Preferably, one end of the movable contact is a swinging end matched with the fixed contact, the other end of the movable contact is a mounting end, the mounting end of the movable contact is rotatably mounted on a rotating shaft of the base, the second triggering portion of the movable contact is a protruding structure arranged on the top surface of the mounting end, and the second linkage portion of the second shifting lever abuts against the mounting end of the movable contact and is located between the second triggering portion and the swinging end.

Preferably, a supporting table is arranged in the mounting groove of the shell, a buckle is arranged on the side wall of the mounting groove, the circuit board is located between the supporting table and the buckle, the circuit board is arranged on the supporting table, and the buckle buckles the circuit board.

Preferably, the breaker further comprises an upper cover assembly, the upper cover assembly is buckled on the base, an operation through hole is formed in the upper cover assembly, one end of the handle is installed in the base, the other end of the handle penetrates through the operation through hole and extends out of the breaker, and an opening mark, a tripping mark and a closing mark are sequentially arranged on one side, located on the operation through hole, of the top surface of the upper cover assembly.

Preferably, the device also comprises a circuit board, a support, a push plate, a return spring, a torsion spring, a knob rod and two contact pins, wherein the support is installed on the circuit board, the push plate is installed on the support in a sliding manner, the return spring is abutted between the support and one end of the push plate, and the other end of the push plate is matched with the knob rod; the knob rod is rotatably arranged on the circuit board and is provided with a cam, and the cam is provided with a top abutting surface positioned at the top end; the two contact pins are arranged on the circuit board, one of the contact pins is electrically connected with an external circuit through a lead, the other contact pin is electrically connected with the circuit board, the torsion spring is arranged on the push plate and is provided with two pins, and the two pins of the torsion spring are abutted against the push plate and can be correspondingly connected with the two contact pins one by one;

when the cam top abutting surface of the knob rod is not contacted with the push plate, the two pins of the torsion spring are not connected with the two contact pins, and the circuit board is not communicated with an external circuit; the knob rod is rotated, the push plate is pushed by the cam of the knob rod to slide on the support, when the knob rod is rotated to abut against the cam top of the knob rod and abut against the push plate, the torsion spring on the push plate moves to two pins along with the push plate to be connected with two contact pins, and the circuit board and an external circuit are conducted.

According to the circuit breaker state indicating structure, three states of closing, opening and tripping of the low-voltage circuit breaker are judged in a mode of combining the contact states of two groups of micro switches, one group is used for switching the state of the micro switch through a handle, and the other group is used for switching the state of the micro switch through a moving contact, so that one group of micro switches is reduced, the occupied space is saved, the cost is saved, meanwhile, the layout is simple and reasonable, and the situation that other parts are prevented from being additionally arranged is avoided.

In addition, two groups of micro switches are integrated on one circuit board, so that the structure is simplified, the occupied space is saved, and the connection mode is simplified.

Drawings

Figure 1 is an exploded view of the circuit breaker of the present invention;

figure 2 is an assembly view of the circuit breaker of the present invention;

fig. 3 is a top view of the circuit breaker in a tripped condition in accordance with the present invention;

fig. 4 is a cross-sectional view of the circuit breaker in a tripped condition in accordance with the present invention;

fig. 5 is a plan view of the circuit breaker in the open state of the present invention;

figure 6 is a cross-sectional view of the circuit breaker of the present invention in the open position;

fig. 7 is a plan view of the circuit breaker in a closing state according to the present invention;

fig. 8 is a cross-sectional view of the circuit breaker in a closed state of the present invention;

FIG. 9 is a schematic structural view of the housing of the present invention;

FIG. 10 is an exploded view of the housing and circuit board of the present invention;

FIG. 11 is an exploded view of the circuit board and the first and second microswitches of the present invention;

FIG. 12 is an assembly view of the circuit board and the first and second microswitches of the present invention;

FIG. 13 is an assembly view of the housing and the first and second shift levers of the present invention;

FIG. 14 is an assembly view of the first toggle lever and the first torsion spring of the present invention;

FIG. 15 is a schematic view of a first toggle lever according to the present invention;

FIG. 16 is a schematic structural view of a first torsion spring of the present invention;

FIG. 17 is a partial structural assembly view of the second toggle lever and second torsion spring of the present invention with the housing;

FIG. 18 is an assembly view of the second toggle lever and the second torsion spring of the present invention;

FIG. 19 is a schematic view of a second toggle lever of the present invention;

FIG. 20 is a structural schematic of a second torsion spring of the present invention;

figure 21 is an exploded view of the circuit breaker voltage isolation structure of the present invention

FIG. 22 is a schematic diagram of the present invention showing the state where the circuit board is not connected to the external circuit

FIG. 23 is a schematic diagram of the conducting state between the circuit board and the external circuit according to the present invention.

Detailed Description

The following describes the specific implementation of the circuit breaker status indication structure according to the present invention with reference to the embodiments shown in fig. 1 to 23. The circuit breaker state indicating structure of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1 to 8, the circuit breaker status indication structure of the present invention includes an upper cover assembly 91, a handle 92, a base 93, a movable contact 94, a stationary contact 95, a housing 4, a circuit board 5, a first microswitch 1 and a second microswitch 2. The upper cover assembly 91 is fastened on the base 93, and the upper cover assembly 91 is provided with an operation through hole. An opening mark 911, a releasing mark 912 and a closing mark 913 are sequentially arranged on one side of the operation through hole on the top surface of the upper cover assembly 91. One end of the handle 92 is swingably mounted in the base 93, and the other end thereof protrudes outside the circuit breaker for operation through the operation through-hole of the upper cover member 91. One end of the movable contact 94 is a swinging end 941 engaged with the fixed contact 95, and the other end is an installation end 942, and the installation end 942 of the movable contact 94 is rotatably installed on the rotating shaft 96 of the base 93. The handle 92 is in driving connection with the moving contact 94, and can drive the swinging end 941 of the moving contact 94 to be disconnected or closed with the static contact 95, so that the opening or closing of the circuit breaker is realized. It should be noted that, the moving contact 94 is driven by the handle 92 to realize the opening and closing of the circuit breaker in the prior art.

As shown in fig. 9-10, the housing 4 is installed in the base 93, the housing 4 is provided with an installation groove 401 for installing the circuit board 5, a support platform 409 for supporting the circuit board 5 is arranged in the installation groove 401 of the housing 4, a buckle 408 is arranged on a side wall of the installation groove 401, the circuit board 5 is located between the support platform 409 and the buckle 408, the circuit board 5 is arranged on the support platform 409, and the buckle 408 buckles the circuit board 5. As shown in fig. 4, 6 and 8, the movable contact 94 is located below the handle 92, and the circuit board 5 is mounted in the mounting groove 401 of the housing 4 between the handle 92 and the movable contact 94. As shown in fig. 11-12, a first microswitch 1 is mounted on the top surface of the circuit board 5 below the handle 92 and a second microswitch 2 is mounted on the bottom surface of the circuit board 5 above the movable contact 94.

The handle 92 and the movable contact 94 are respectively matched with the first microswitch 1 and the second microswitch 2, and the three states of closing, opening and tripping of the low-voltage circuit breaker are judged by combining the contact states of the two groups of microswitches. During tripping, the handle 92 triggers the first microswitch 1 and the moving contact 94 does not trigger the second microswitch 2, during closing, the handle 92 does not trigger the first microswitch 1 and the moving contact 94 triggers the second microswitch 2, during tripping, the handle 92 does not trigger the first microswitch 1 and the moving contact 94 does not trigger the second microswitch 2; or, the handle 92 does not trigger the first microswitch 1 and the movable contact 94 triggers the second microswitch 2 during opening, the handle 92 triggers the first microswitch 1 and the movable contact 94 does not trigger the second microswitch 2 during closing, and the handle 92 does not trigger the first microswitch 1 and the movable contact 94 does not trigger the second microswitch 2 during releasing. The circuit breaker state indicating structure judges three states of closing, opening and tripping of the low-voltage circuit breaker by combining the states of two groups of micro-switch contacts, wherein one group switches the state of the micro-switch through the handle 92, and the other group switches the state of the micro-switch through the movable contact 94, so that one group of micro-switches is reduced, the occupied space is saved, the cost is saved, the layout is simple and reasonable, and the obstruction to the addition of other parts is avoided.

As shown in fig. 4, 6 and 8, in a preferred embodiment, the first micro switch 1 has a first push rod 101 for switching the normally open contact and the normally closed contact of the first micro switch 1, and the second micro switch 2 has a second push rod 201 for switching the normally open contact and the normally closed contact of the second micro switch 2. The handle 92 is provided with a first trigger portion 922 corresponding to the first push rod 101, the first trigger portion 922 of the handle 92 drives the first push rod 101 to realize switching of the contact state of the first microswitch 1 during opening of the circuit breaker, and the handle 92 does not trigger the first microswitch 1 during closing. The moving contact 94 is provided with a second trigger portion 943 corresponding to the second push rod 201, when the circuit breaker is switched on, the second trigger portion 943 of the moving contact 94 drives the second push rod 201 to realize the switching of the contact state of the second microswitch 2, and when the circuit breaker is switched off, the second microswitch 2 is not triggered. When tripping, the operating mechanism trips to drive the moving contact to be separated from the fixed contact, the moving contact 94 does not trigger the second microswitch 2, at this time, the handle 92 swings to the handle 92 swing to the tripping mark 912, and the first microswitch 1 is not triggered. The first microswitch 1 and the second microswitch 2 are provided with three pins which are respectively a public end, a normally closed point and a normally open point, the push rod of the microswitch acts, and the normally open contact and the normally closed contact of the switchable microswitch can be realized by the prior art. The circuit breaker state indicating structure judges three states of closing, opening and tripping of the low-voltage circuit breaker by combining the contact states of two groups of micro switches, wherein one group is the state of pushing the ejector rod to switch the micro switch by the closing position of the handle 92, and the other group is the state of pushing the ejector rod to switch the micro switch by the moving contact 94, so that one group of micro switches is reduced, the occupied space is saved, the cost is saved, the layout is simple and reasonable, and the obstruction to the addition of other parts is avoided. Two groups of micro switches are integrated on one circuit board 5, so that the structure is simplified, the occupied space is saved, and the connection mode is simplified.

As shown in fig. 4, 6 and 8, the first trigger 922 of the handle 92 is drivingly connected to the first push rod 101 of the first microswitch 1 via the first shift lever 5. As shown in fig. 15, the first shift lever 5 is an integrally formed structure, and includes a first shifting portion 501, a first connecting portion 502, a first mounting portion 503 and a first linking portion 504, which are connected in sequence, the first mounting portion 503 is a cylinder having a first axial hole 505, and the first shift lever 5 is rotatably mounted on the housing 4 by sleeving the first mounting portion 503 on the first mounting shaft 402 of the housing 4. The first connecting portion 502 and the first linkage portion 504 are connected to two sides of an outer wall of the first mounting portion 503, two side faces of the first connecting portion 502 and the first linkage portion 504 are flush with two end faces of the first mounting portion 503, and one end of the first toggle portion 501 is vertically connected to one side face of the first connecting portion 502. As shown in fig. 4, 6 and 8, the first toggle part 501 at one end of the first toggle lever 5 passes through the first through hole 404 of the housing 4 and presses on the first push rod 101 of the first microswitch 1, and the first linkage part 504 at the other end of the first toggle lever 5 is arranged corresponding to the first trigger part 922 of the handle 92. The handle 92 is provided with a guide part 921 for guiding during swinging, the guide part 921 is in a circular arc shape, and the first trigger part 922 is a convex structure arranged at the end part of the guide part 921; the first microswitch 1 is located below the side of the handle 92, the first shift lever 5 is located right above the first microswitch 1, and the first linkage 504 of the first shift lever 5 is on the motion track of the first trigger 922.

As shown in fig. 13 to 14, a first torsion spring 6 for restoring the first lever 5 is disposed between the first lever 5 and the housing 4, and the structure of the first torsion spring 6 is shown in fig. 16. The spring body of the first torsion spring 6 is fitted over the first mounting shaft 402, the first U-shaped pin 601 at one end of the first torsion spring 6 is fastened to the first connection portion 502, and the first straight pin 602 at the other end is engaged in the first limit groove 403 of the housing 4.

As shown in fig. 4, 6 and 8, the second trigger 943 of the movable contact 94 is drivingly connected to the second push rod 201 of the second microswitch 2 through the second shift lever 7. As shown in fig. 19, the second shift lever 7 is an integrally formed structure, and includes a second shifting portion 701, a second connecting portion 702, a second mounting portion 703 and a second linkage portion 704, which are connected in sequence, the second mounting portion 703 is a cylinder having a second axial hole 705, and the second shift lever 7 is rotatably mounted on the housing 4 by sleeving the second mounting portion 703 on the second mounting shaft 405 of the housing 4. The second connecting portion 702 and the second linkage portion 704 are connected to two sides of an outer wall of the second mounting portion 703, two side faces of the second connecting portion 702 and the second linkage portion 704 are flush with two end faces of the second mounting portion 703, the second toggle portion 701 is connected to an end portion of the second connecting portion 702, and two sides of the second toggle portion 701 protrude out of two sides of the second connecting portion 702. As shown in fig. 4, 6 and 8, the second toggle portion 701 at one end of the second toggle lever 7 passes through the second through hole 407 of the housing 4 and presses on the second push rod 201, and the second linkage portion 704 at the other end of the second toggle lever 7 is disposed corresponding to the second trigger portion 943 of the movable contact 94. The second triggering portion 943 is a protrusion disposed on the top surface of the mounting end 942, and the second linking portion 704 of the second lever 7 abuts against the mounting end 942 of the movable contact 94 and is located between the second triggering portion 943 and the swinging end 941.

As shown in fig. 13, 17 and 18, a second torsion spring 8 for restoring the second lever 7 is provided between the second lever 7 and the housing 4, and the structure of the second torsion spring 8 is shown in fig. 20. The spring body of the second torsion spring 8 is sleeved on the second mounting shaft 405, the second U-shaped pin 801 at one end of the second torsion spring 8 is buckled on the second connecting portion 702, and the second straight pin 802 at the other end is clamped in the second limiting groove 406 of the housing 4.

In the working process of the circuit breaker state indicating structure, as shown in fig. 3, the handle 92 swings until the tripping mark 912 is aligned, the circuit breaker is tripped as shown in fig. 4, the first triggering portion 922 of the handle 92 does not touch the first linkage portion 504 of the first shift lever 5, and the first shifting portion 501 of the first shift lever 5 keeps pressing the first push rod 101 of the first micro switch 1, so that the contact state of the first micro switch 1 is kept unchanged; the moving contact 94 is disconnected from the static contact 95, the second trigger portion 943 of the moving contact 94 does not touch the second linkage portion 704 of the second shift lever 7, and the second shift portion 701 of the second shift lever 7 keeps pressing the second push rod 201 of the second micro switch 2, so that the contact state of the second micro switch 2 remains unchanged.

As shown in fig. 5, the operating handle 92 is aligned with the opening mark 911, and the circuit breaker is opened as shown in fig. 6, the first triggering portion 922 of the handle 92 presses the first linkage portion 504 of the first shift lever 5 to drive the first shift lever 5 to rotate, the first shifting portion 501 of the first shift lever 5 no longer presses the first push rod 101 of the first micro switch 1, so that the contact state of the first micro switch 1 is converted, the normally open contact of the first micro switch 1 is converted into the normally closed contact, and the normally closed contact is converted into the normally open contact; meanwhile, the handle 92 drives the movable contact 94 to be disconnected from the stationary contact 95, the second trigger portion 943 of the movable contact 94 does not touch the second linkage portion 704 of the second shift lever 7, and the second shift portion 701 of the second shift lever 7 keeps pressing the second push rod 201 of the second micro switch 2, so that the contact state of the second micro switch 2 remains unchanged.

As shown in fig. 7, the operating handle 92 is aligned with the closing mark 913, and the circuit breaker is closed as shown in fig. 8, the first triggering portion 922 of the handle 92 does not touch the first linkage portion 504 of the first toggle lever 5, and the first toggle portion 501 of the first toggle lever 5 keeps pressing the first push rod 101 of the first micro switch 1, so that the contact state of the first micro switch 1 remains unchanged; meanwhile, the handle 92 drives the movable contact 94 and the fixed contact 95 to be closed, the second trigger portion 943 of the movable contact 94 jacks up the second linkage portion 704 of the second shift lever 7 to drive the second shift lever 7 to rotate, the second shift portion 701 of the second shift lever 7 no longer presses the second push rod 201 of the second micro switch 2, and therefore the contact state of the second micro switch 2 is converted, the normally open contact of the second micro switch 2 is converted into the normally closed contact, and the normally closed contact is converted into the normally open contact.

It should be noted that, the circuit breaker state indicating structure of the present invention is further provided with a control processing module for receiving signals of the two groups of micro switches, performing logic processing, and then outputting signals representing three states of tripping, opening and closing of the low-voltage circuit breaker to a remote upper computer, which is the prior art and is not described herein again.

As shown in fig. 21-23, the circuit breaker of the present invention further comprises a circuit breaker voltage isolation structure, which comprises a circuit board 5, a bracket 901, a push plate 902, a return spring 903, a torsion spring 904, a knob lever 905, and two pins 906. The support 901 is installed on the circuit board 5, the push plate 902 is installed on the support 901 in a sliding mode, the return spring 903 abuts between the support 901 and one end of the push plate 902, and the other end of the push plate 902 is matched with the knob rod 905. A knob lever 905 is rotatably mounted on the circuit board 5, the knob lever 905 having a cam 9051 with a top abutment surface 9052 at the top end. Two pins 906 are mounted on the circuit board 5, one of the pins 906 being electrically connected to an external circuit through a wire 907, the other pin 906 being electrically connected to the circuit board 5. The torsion spring 904 is installed on the push plate 902, the torsion spring 904 has two pins 9041, and the two pins 9041 of the torsion spring 904 abut against the push plate 902 and can be connected with the two pins 906 in a one-to-one correspondence manner.

When the cam 9051 of the knob rod 905 abuts against the surface 9052 and is not contacted with the push plate 902, the two pins 9041 and the two contact pins 906 of the torsion spring 904 are not connected, and the circuit board 5 is not connected with an external circuit; when the knob lever 905 is rotated, the cam 9051 of the knob lever 905 pushes the push plate 902 to slide on the bracket 901, and when the cam 9051 of the knob lever 905 abuts against the push plate 902 with the abutting surface 9052, the torsion spring 904 on the push plate 902 moves to the two pins 9041 along with the push plate 902 to be connected with the two pins 906, so that the circuit board 5 and an external circuit are connected. According to the voltage isolation structure of the circuit breaker, the connection between the external circuit and the circuit board can be disconnected through physical isolation, the safety of an operator in the using and testing process is ensured, the external circuit and the circuit board can be disconnected or connected quickly and accurately, and the operation is simple and convenient; the rotary motion is converted into a translational motion mode to push the torsion spring to be communicated with the contact pin, and the conduction synchronism is good.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (11)

1. A circuit breaker state indicating structure comprises a base (93), a handle (92), a movable contact (94), a fixed contact (95), a first microswitch (1) and a second microswitch (2), wherein the handle (92) and the movable contact (94) are respectively arranged in the base (93) in a swinging mode, the handle (92) is in driving connection with the movable contact (94), and the movable contact (94) and the fixed contact (95) can be driven to be disconnected or closed; the method is characterized in that: during opening, the handle (92) triggers the first microswitch (1) and the moving contact (94) does not trigger the second microswitch (2), during closing, the handle (92) does not trigger the first microswitch (1) and the moving contact (94) triggers the second microswitch (2), during tripping, the handle (92) does not trigger the first microswitch (1) and the moving contact (94) does not trigger the second microswitch (2); or the handle (92) does not trigger the first microswitch (1) and the moving contact (94) triggers the second microswitch (2) during opening, the handle (92) triggers the first microswitch (1) and the moving contact (94) does not trigger the second microswitch (2) during closing, and the handle (92) does not trigger the first microswitch (1) and the moving contact (94) does not trigger the second microswitch (2) during tripping.

2. The circuit breaker state indicating structure according to claim 1, wherein: the first microswitch (1) is provided with a first push rod (101) for converting a normally open contact and a normally closed contact of the first microswitch (1), and the second microswitch (2) is provided with a second push rod (201) for converting a normally open contact and a normally closed contact of the second microswitch (2); a first trigger part (922) corresponding to the first push rod (101) is arranged on the handle (92), and the first trigger part (922) of the handle (92) drives the first push rod (101) to realize conversion of the contact state of the first microswitch (1); and a second trigger part (943) corresponding to the second push rod (201) is arranged on the moving contact (94), and the second trigger part (943) of the moving contact (94) drives the second push rod (201) to realize the switching of the contact state of the second microswitch (2).

3. The circuit breaker state indicating structure according to claim 1, wherein: the novel switch is characterized by further comprising a shell (4) and a circuit board (5), wherein the shell (4) is installed in the base (93), the shell (4) is provided with an installation groove (401) used for installing the circuit board (5), the movable contact (94) is located below the handle (92), the circuit board (5) is installed in the installation groove (401) of the shell (4) and located between the handle (92) and the movable contact (94), the first microswitch (1) is installed on the top surface of the circuit board (5) and located below the handle (92), and the second microswitch (2) is installed on the bottom surface of the circuit board (5) and located above the movable contact (94).

4. The circuit breaker state indicating structure according to claim 3, wherein: a first trigger part (922) of the handle (92) is in driving connection with a first push rod (101) of the first microswitch (1) through a first shift lever (5), the first shift lever (5) is rotatably installed on the shell (4), a first shift part (501) at one end of the first shift lever (5) is pressed on the first push rod (101), and a first linkage part (504) at the other end of the first shift lever is arranged corresponding to the first trigger part (922); a first torsion spring (6) is arranged between the first deflector rod (5) and the shell (4), and two ends of the first torsion spring (6) are connected to the first deflector rod (5) and the shell (4).

5. The circuit breaker state indicating structure according to claim 4, wherein: the first shifting lever (5) comprises a first shifting portion (501), a first connecting portion (502), a first mounting portion (503) and a first linkage portion (504) which are sequentially connected, the first mounting portion (503) is a cylinder with a first axial hole (505) and is sleeved on a first mounting shaft (402) of the shell (4), the first connecting portion (502) and the first linkage portion (504) are connected to two sides of the outer wall of the first mounting portion (503) and are flush with the end faces of two ends of the first mounting portion (503), and one end of the first shifting portion (501) is vertically connected to the first connecting portion (502); the spring body of the first torsion spring (6) is sleeved on the first mounting shaft (402), a first U-shaped pin (601) at one end of the first torsion spring (6) is buckled on the first connecting part (502), and a first straight pin (602) at the other end of the first torsion spring is clamped into a first limiting groove (403) of the shell (4).

6. The circuit breaker state indicating structure according to claim 4 or 5, wherein: the handle (92) is provided with a guide part (921) for guiding during swinging, and the first trigger part (922) is a protruding structure arranged at the end part of the guide part (921); the first microswitch (1) is located below the side of the handle (92), the first shifting lever (5) is located right above the first microswitch (1), and the first linkage portion (504) of the first shifting lever (5) is located on the motion track of the first trigger portion (922).

7. The circuit breaker state indicating structure according to claim 3, wherein: a second trigger part (943) of the moving contact (94) is in driving connection with a second push rod (201) of the second microswitch (2) through a second driving lever (7), the second driving lever (7) is rotatably installed on the shell (4), a second shifting part (701) at one end of the second driving lever (7) is pressed on the second push rod (201), and a second linkage part (704) at the other end of the second driving lever (7) is arranged corresponding to the second trigger part (943); a second torsion spring (8) is arranged between the second deflector rod (7) and the shell (4), and two ends of the second torsion spring (8) are connected to the second deflector rod (7) and the shell (4).

8. The circuit breaker state indicating structure according to claim 7, wherein: the second shifting lever (7) comprises a second shifting portion (701), a second connecting portion (702), a second mounting portion (703) and a second linkage portion (704), which are sequentially connected, the second mounting portion (703) is a cylinder with a second axial hole (705) and is sleeved on the second mounting shaft (405) of the shell (4), the second connecting portion (702) and the second linkage portion (704) are connected to two sides of the outer wall of the second mounting portion (703) and are flush with end faces of two ends of the second mounting portion (703), and two sides of the second shifting portion (701) protrude out of two sides of the second connecting portion (702); the spring body of the second torsion spring (8) is sleeved on the second mounting shaft (405), a second U-shaped pin (801) at one end of the second torsion spring (8) is buckled on the second connecting part (702), and a second straight pin (802) at the other end of the second torsion spring is clamped into a second limiting groove (406) of the shell (4).

9. The circuit breaker state indicating structure according to claim 7 or 8, wherein: one end of the moving contact (94) is a swinging end (941) matched with the fixed contact (95), the other end of the moving contact is a mounting end (942), the mounting end (942) of the moving contact (94) is rotatably mounted on a rotating shaft (96) of the base (93), a second triggering portion (943) of the moving contact (94) is a protruding structure arranged on the top surface of the mounting end (942), and a second linkage portion (704) of the second shift lever (7) abuts against the mounting end (942) of the moving contact (94) and is located between the second triggering portion (943) and the swinging end (941).

10. The circuit breaker state indicating structure according to claim 1, wherein: still include upper cover subassembly (91), upper cover subassembly (91) lid is detained on base (93), and is equipped with the operation through-hole on upper cover subassembly (91), the one end of handle (92) is installed in base (93), and the other end passes the operation through-hole and stretches out outside the circuit breaker, the one side that lies in the operation through-hole on the top surface of upper cover subassembly (91) is equipped with separating brake mark (911), dropout mark (912) and closing marker (913) in proper order.

11. The circuit breaker state indicating structure according to claim 1, wherein: the novel circuit board is characterized by further comprising a circuit board (5), a support (901), a push plate (902), a reset spring (903), a torsion spring (904), a knob rod (905) and two contact pins (906), wherein the support (901) is installed on the circuit board (5), the push plate (902) is installed on the support (901) in a sliding mode, the reset spring (903) abuts between the support (901) and one end of the push plate (902), and the other end of the push plate (902) is matched with the knob rod (905); the knob rod (905) is rotatably installed on the circuit board (5), the knob rod (905) is provided with a cam (9051), and the cam (9051) is provided with a top abutting surface (9052) at the top end; the two pins (906) are mounted on the circuit board (5), one pin (906) is electrically connected with an external circuit through a lead (907), the other pin (906) is electrically connected with the circuit board (5), the torsion spring (904) is mounted on the push plate (902), the torsion spring (904) is provided with two pins (9041), and the two pins (9041) of the torsion spring (904) are abutted against the push plate (902) and can be correspondingly connected with the two pins (906) one by one;

when the cam (9051) of the knob rod (905) abuts against the surface (9052) and is not contacted with the push plate (902), the two pins (9041) and the two contact pins (906) of the torsion spring (904) are not connected, and the circuit board (5) and an external circuit are not connected; the knob rod (905) is rotated, the cam (9051) of the knob rod (905) pushes the push plate (902) to slide on the support (901), when the cam (9051) rotated to the knob rod (905) pushes the abutting surface (9052) to abut against the push plate (902), the torsion spring (904) on the push plate (902) moves to the two pins (9041) along with the push plate (902) to be connected with the two contact pins (906), and the circuit board (5) and an external circuit are conducted.

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