Circuit breaker status indication structure

Abstract

The circuit breaker status indication structure includes a base, a handle, a moving contact, a static contact, a first microswitch and a second microswitch. The handle and the moving contact are respectively swingably installed in the base, and the handle is drivingly connected to the moving contact. When tripping, the handle does not trigger the first microswitch and the moving contact does not trigger the second microswitch; alternatively, when tripping, the handle does not trigger the first microswitch and the moving contact does not trigger the second microswitch. The present invention discloses a circuit breaker status indication structure, which determines the closing, tripping and tripping states of a low-voltage circuit breaker through the combination of the contact states of two groups of microswitches, saving occupied space.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and particularly to a circuit breaker state indication structure. Background Art

[0002] Low-voltage circuit breakers usually have three states, namely closing, opening, and free tripping. In the design of the existing state indication structures for closing, opening, and free tripping of circuit breakers, one is to set two micro switches above the mechanism rotating shaft of the low-voltage circuit breaker to respectively indicate the closing and opening states of the circuit breaker, and set a micro switch at the tripping link of the low-voltage circuit breaker to indicate whether the low-voltage circuit breaker trips. This greatly occupies the space of the auxiliary contacts and alarm contacts of the low-voltage circuit breaker. Since the space inside the low-voltage circuit breaker is extremely limited, if the existing low-voltage circuit breaker is used to set three micro switches to achieve the indication of the three states of closing, opening, and tripping, but if the auxiliary contacts and alarm contacts are required to implement related functions, the requirements cannot be met due to space limitations. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a circuit breaker state indication structure that determines the three states of closing, opening, and tripping of a low-voltage circuit breaker by combining the contact states of two groups of micro switches.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A circuit breaker state indication structure includes a base, a handle, a moving contact, a static contact, a first micro switch, and a second micro switch. The handle and the moving contact are respectively swingably installed in the base. The handle is drivingly connected to the moving contact and can drive the moving contact to disconnect or close with the static contact. When opening, the handle triggers the first micro switch and the moving contact does not trigger the second micro switch. When closing, the handle does not trigger the first micro switch and the moving contact triggers the second micro switch. When tripping, the handle does not trigger the first micro switch and the moving contact does not trigger the second micro switch either; or when opening, the handle does not trigger the first micro switch and the moving contact triggers the second micro switch. When closing, the handle triggers the first micro switch and the moving contact does not trigger the second micro switch. When tripping, the handle does not trigger the first micro switch and the moving contact does not trigger the second micro switch either.

[0006] Preferably, the first microswitch has a first push rod for switching the normally open contact and the normally closed contact of the first microswitch, and the second microswitch has a second push rod for switching the normally open contact and the normally closed contact of the second microswitch; 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 achieve the conversion of the contact state of the first microswitch; the moving contact is provided with a second trigger part corresponding to the second push rod, and the second trigger part of the moving contact drives the second push rod to achieve the conversion of the contact state of the second microswitch.

[0007] Preferably, it also includes a shell and a circuit board, the shell is installed 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 installed in the mounting groove of the shell and is located between the handle and the moving contact, the first micro switch is installed on the top surface of the circuit board and is located below the handle, and the second micro switch is installed on the bottom surface of the circuit board and is located above the moving contact.

[0008] Preferably, the first trigger part of the handle is driven and connected to the first push rod of the first micro switch through the first lever, the first lever is rotatably mounted on the shell, the first driving part at one end of the first lever is pressed on the first push rod, and the first linkage part at the other end is arranged corresponding to the first trigger part; a first torsion spring is provided between the first lever and the shell, and the two ends of the first torsion spring are connected to the first lever and the shell.

[0009] Preferably, the first lever includes a first toggle portion, a first connecting portion, a first mounting portion and a first linkage portion which are connected in sequence, the first mounting portion being a cylinder having a first axial hole, which is sleeved on the first mounting shaft of the shell, the first connecting portion and the first linkage portion being connected to both sides of the outer wall of the first mounting portion and being flush with the end surfaces of both ends of the first mounting portion, and one end of the first toggle portion being vertically connected to the first connecting portion; the spring body of the first torsion spring is sleeved on the first mounting shaft, the first U-shaped pin at one end of the first torsion spring is buckled on the first connecting portion, and the first straight pin at the other end is snapped into the first limiting groove of the shell.

[0010] Preferably, the handle has a guide portion for guiding during swinging, and the first trigger portion is a protruding structure arranged at the end of the guide portion; the first microswitch is located at the lower side of the handle, the first lever is located directly above the first microswitch, and the first linkage portion of the first lever is on the motion trajectory of the first trigger portion.

[0011] Preferably, the second triggering part of the moving contact is driven and connected to the second push rod of the second micro switch through the second lever, the second lever is rotatably mounted on the shell, the second driving part at one end of the second lever is pressed on the second push rod, and the second linkage part at the other end is arranged corresponding to the second triggering part; a second torsion spring is provided between the second lever and the shell, and the two ends of the second torsion spring are connected to the second lever and the shell.

[0012] Preferably, the second lever includes a second toggle portion, a second connecting portion, a second mounting portion and a second linkage portion which are connected in sequence, the second mounting portion being a cylinder having a second axial hole, which is sleeved on the second mounting shaft of the shell, the second connecting portion and the second linkage portion being connected to both sides of the outer wall of the second mounting portion and being flush with both end surfaces of the second mounting portion, and both sides of the second toggle portion protruding out from both sides of the second connecting portion; the spring body of the second torsion spring is sleeved on the second mounting shaft, the second U-shaped pin at one end of the second torsion spring is buckled on the second connecting portion, and the second straight pin at the other end is inserted into the second limiting groove of the shell.

[0013] Preferably, one end of the moving contact is a swinging end that cooperates with the static contact, and the other end is a mounting end. The mounting end of the moving contact is rotatably mounted on the rotating shaft of the base. The second triggering portion of the moving contact is a protruding structure arranged on the top surface of the mounting end. The second linkage portion of the second lever abuts against the mounting end of the moving contact and is located between the second triggering portion and the swinging end.

[0014] Preferably, a support platform is provided in the mounting groove of the shell, a buckle is provided on the side wall of the mounting groove, the circuit board is located between the support platform and the buckle, the circuit board is placed on the support platform, and the buckle buckles the circuit board.

[0015] Preferably, it also includes an upper cover assembly, which is buckled on the base and provided with an operating through hole. One end of the handle is installed in the base, and the other end passes through the operating through hole and extends out of the circuit breaker. An opening mark, a tripping mark and a closing mark are sequentially provided on the top surface of the upper cover assembly on one side of the operating through hole.

[0016] Preferably, it also includes a circuit board, a bracket, a push plate, a return spring, a torsion spring, a knob rod and two pins, the bracket is mounted on the circuit board, the push plate is slidably mounted on the bracket, the return spring abuts between the bracket and one end of the push plate, and the other end of the push plate cooperates with the knob rod; the knob rod is rotatably mounted on the circuit board, the knob rod has a cam, and the cam has a top abutting surface located at the top; the two pins are mounted on the circuit board, one of the pins is electrically connected to the external circuit through a wire, and the other pin is electrically connected to the circuit board, the torsion spring is mounted on the push plate, the torsion spring has two pins, the two pins of the torsion spring abut on the push plate, and can be connected with the two pins one by one;

[0017] When the cam top abutting surface of the knob rod is not in contact with the push plate, the two pins of the torsion spring are not connected to the two pins, and the circuit board is not connected to the external circuit; when the knob rod is rotated, the cam of the knob rod pushes the push plate to slide on the bracket, and when the cam top abutting surface of the knob rod is rotated to abut against the push plate, the torsion spring on the push plate moves with the push plate until the two pins are connected to the two pins, thereby achieving conduction between the circuit board and the external circuit.

[0018] The circuit breaker status indication structure of the present invention determines the three states of closing, opening, and tripping of the low-voltage circuit breaker by combining the contact states of two groups of micro switches. One group switches the state of the micro switch through the handle, and the other group switches the state of the micro switch through the moving contact. One group of micro switches is reduced, saving occupied space and cost. At the same time, the layout is simple and reasonable, avoiding interfering with the addition of other parts.

[0019] In addition, the two groups of micro switches are integrated on a circuit board, simplifying the structure, saving occupied space and simplifying the connection method. Description of the Drawings

[0020] Figure 1 is an exploded view of the circuit breaker of the present invention;

[0021] Figure 2 is an assembly view of the circuit breaker of the present invention;

[0022] Figure 3 is a top view of the circuit breaker in the tripped state of the present invention;

[0023] Figure 4 is a cross-sectional view of the circuit breaker in the tripped state of the present invention;

[0024] Figure 5 is a top view of the circuit breaker in the open state of the present invention;

[0025] Figure 6 is a cross-sectional view of the circuit breaker in the open state of the present invention;

[0026] Figure 7 is a top view of the circuit breaker in the closed state of the present invention;

[0027] Figure 8 is a cross-sectional view of the circuit breaker in the closed state of the present invention;

[0028] Figure 9 is a schematic structural view of the housing of the present invention;

[0029] Figure 10 is an exploded view of the housing and the circuit board of the present invention;

[0030] Figure 11 is an exploded view of the circuit board and the first and second micro switches of the present invention;

[0031] Figure 12 is an assembly view of the circuit board and the first and second micro switches of the present invention;

[0032] Figure 13 is an assembly view of the housing and the first and second shift rods of the present invention;

[0033] Figure 14It is the assembly drawing of the first lever and the first torsion spring of the present invention;

[0034] Figure 15 It is the structural schematic diagram of the first lever of the present invention;

[0035] Figure 16 It is the structural schematic diagram of the first torsion spring of the present invention;

[0036] Figure 17 It is the partial structural assembly drawing of the second lever, the second torsion spring and the housing of the present invention;

[0037] Figure 18 It is the assembly drawing of the second lever and the second torsion spring of the present invention;

[0038] Figure 19 It is the structural schematic diagram of the second lever of the present invention;

[0039] Figure 20 It is the structural schematic diagram of the second torsion spring of the present invention;

[0040] Figure 21 It is the exploded view of the voltage isolation structure of the circuit breaker of the present invention

[0041] Figure 22 It is the schematic diagram of the state where the circuit board of the present invention is not connected to the external circuit

[0042] Figure 23 It is the schematic diagram of the state where the circuit board of the present invention is conducting with the external circuit. Detailed implementation manners

[0043] The following further describes the specific implementation manners of the circuit breaker state indication structure of the present invention in conjunction with the Figures 1 to 23 embodiments given. The circuit breaker state indication structure of the present invention is not limited to the description of the following embodiments.

[0044] For example Figures 1 - 8As shown in the figure, the circuit breaker status indication structure of the present invention includes an upper cover assembly 91, a handle 92, a base 93, a moving contact 94, a static contact 95, a housing 4, a circuit board 3, a first microswitch 1, and a second microswitch 2. The upper cover assembly 91 is buckled on the base 93, and an operation through-hole is provided on the upper cover assembly 91. On the top surface of the upper cover assembly 91, a tripping mark 911, a trip mark 912, and a closing mark 913 are sequentially provided on one side of the operation through-hole. One end of the handle 92 is swingably installed in the base 93, and the other end passes through the operation through-hole of the upper cover assembly 91 and extends outside the circuit breaker for operation. One end of the moving contact 94 is a swinging end 941 that cooperates with the static contact 95, and the other end is a mounting end 942. The mounting end 942 of the moving contact 94 is rotatably installed on the rotating shaft 96 of the base 93. The handle 92 is drivingly connected to the moving contact 94 and can drive the swinging end 941 of the moving contact 94 to disconnect or close with the static contact 95, realizing the tripping or closing of the circuit breaker. It should be noted that the realization of the handle 92 driving the moving contact 94 to achieve the tripping and closing of the circuit breaker is a prior art.

[0045] As Figures 9 - 10 shown, the housing 4 is installed in the base 93. The housing 4 is provided with a mounting groove 401 for installing the circuit board 3. A support platform 409 for supporting the circuit board 3 is provided in the mounting groove 401 of the housing 4. A buckle 408 is provided on the side wall of the mounting groove 401. The circuit board 3 is located between the support platform 409 and the buckle 408. The circuit board 3 is placed on the support platform 409, and the buckle 408 buckles the circuit board 3. As Figure 4 , Figure 6 and Figure 8 shown, the moving contact 94 is located below the handle 92. The circuit board 3 is installed in the mounting groove 401 of the housing 4 and is located between the handle 92 and the moving contact 94. As Figures 11 - 12 shown, the first microswitch 1 is installed on the top surface of the circuit board 3 and is located below the handle 92. The second microswitch 2 is installed on the bottom surface of the circuit board 3 and is located above the moving contact 94.

[0046] The handle 92 and the moving contact 94 are respectively cooperated with the first microswitch 1 and the second microswitch 2, and the closing, opening and tripping states of the low-voltage circuit breaker are judged by the combination of the contact states of the two groups of microswitches. When opening, the handle 92 triggers the first microswitch 1 and the moving contact 94 does not trigger the second microswitch 2; when closing, the handle 92 does not trigger the first microswitch 1 and the moving contact 94 triggers the second microswitch 2; when tripping, the handle 92 does not trigger the first microswitch 1 and the moving contact 94 does not trigger the second microswitch 2 either; or when opening, the handle 92 does not trigger the first microswitch 1 and the moving contact 94 triggers the second microswitch 2; when closing, the handle 92 triggers the first microswitch 1 and the moving contact 94 does not trigger the second microswitch 2; when tripping, the handle 92 does not trigger the first microswitch 1 and the moving contact 94 does not trigger the second microswitch 2 either. The circuit breaker state indication structure of the present invention judges the closing, opening and tripping states of the low-voltage circuit breaker by the combination of the contact states of the two groups of microswitches. One group is to switch the state of the microswitch through the handle 92, and the other group is to switch the state of the microswitch through the moving contact 94, reducing one group of microswitches, saving occupied space and cost, and at the same time having a simple and reasonable layout, avoiding interfering with the addition of other parts.

[0047] Such as Figure 4 , Figure 6 and Figure 8In a preferred embodiment shown, 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 triggering portion 922 corresponding to the first push rod 101. When the circuit breaker is opened, the first triggering portion 922 of the handle 92 drives the first push rod 101 to achieve the conversion of the contact state of the first micro switch 1. When the circuit breaker is closed, the handle 92 does not trigger the first micro switch 1. The moving contact 94 is provided with a second triggering portion 943 corresponding to the second push rod 201. When the circuit breaker is closed, the second triggering portion 943 of the moving contact 94 drives the second push rod 201 to achieve the conversion of the contact state of the second micro switch 2. When the circuit breaker is opened, the second micro switch 2 is not triggered. When tripping, the operating mechanism trips and drives the moving contact to separate from the static contact, and the moving contact 94 does not trigger the second micro switch 2. At this time, the handle 92 swings to the trip mark 912, and the first micro switch 1 is not triggered. The first micro switch 1 and the second micro switch 2 both have three pins, namely a common terminal, a normally closed point, and a normally open point. The push rod action of the micro switch can convert the normally open contact and the normally closed contact of the micro switch, which can be realized by the prior art. The circuit breaker state indication structure of the present invention judges the three states of closing, opening and tripping of the low-voltage circuit breaker by combining two groups of micro switch contact states. One group is to push the push rod to switch the state of the micro switch by the closing position of the handle 92, and the other group is to push the push rod to switch the state of the micro switch by the moving contact 94. A group of micro switches is reduced, which saves space and costs. At the same time, the layout is simple and reasonable, avoiding interference with the addition of other parts. The two groups of micro switches are integrated on a circuit board 3 to simplify the structure, save space and simplify the connection method.

[0048] like Figure 4 , Figure 6 and Figure 8 As shown, the first triggering portion 922 of the handle 92 is drivingly connected to the first push rod 101 of the first micro switch 1 through the first lever 5. Figure 15 As shown, the first lever 5 is an integrally formed structure, including a first toggle portion 501, a first connection portion 502, a first mounting portion 503 and a first linkage portion 504 which are connected in sequence. The first mounting portion 503 is a cylinder having a first axial hole 505. The first lever 5 is sleeved on the first mounting shaft 402 of the housing 4 through the first mounting portion 503 to realize rotational mounting on the housing 4. The first connection portion 502 and the first linkage portion 504 are connected to both sides of the outer wall of the first mounting portion 503. The side surfaces of the first connection portion 502 and the first linkage portion 504 are flush with the end surfaces of the first mounting portion 503. One end of the first toggle portion 501 is vertically connected to one side surface of the first connection portion 502. Figure 4 , Figure 6 and Figure 8As shown, the first toggle portion 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 micro switch 1, and the first linkage portion 504 at the other end of the first toggle lever 5 is arranged corresponding to the first trigger portion 922 of the handle 92. The handle 92 has a guide portion 921 for guiding when swinging, and the guide portion 921 is in an arc shape. The first trigger portion 922 is a convex structure arranged at the end of the guide portion 921; the first micro switch 1 is located at the lower side of the handle 92, the first toggle lever 5 is located directly above the first micro switch 1, and the first linkage portion 504 of the first toggle lever 5 is on the motion track of the first trigger portion 922.

[0049] like Figures 13 - 14 As shown, a first torsion spring 6 for resetting the first lever 5 is provided between the first lever 5 and the housing 4. The structure of the first torsion spring 6 is as shown in FIG. Figure 16 The spring body of the first torsion spring 6 is sleeved on the first mounting shaft 402 , the first U-shaped pin 601 at one end of the first torsion spring 6 is buckled on the first connecting portion 502 , and the first straight pin 602 at the other end is snapped into the first limiting groove 403 of the housing 4 .

[0050] like Figure 4 , Figure 6 and Figure 8 As shown, the second triggering portion 943 of the moving contact 94 is drivingly connected to the second push rod 201 of the second micro switch 2 through the second lever 7. Figure 19 As shown, the second lever 7 is an integrally formed structure, including a second toggle portion 701, a second connection portion 702, a second mounting portion 703 and a second linkage portion 704 connected in sequence. The second mounting portion 703 is a cylinder having a second axial hole 705. The second lever 7 is sleeved on the second mounting shaft 405 of the housing 4 through the second mounting portion 703 to realize rotational mounting on the housing 4. The second connection portion 702 and the second linkage portion 704 are connected to both sides of the outer wall of the second mounting portion 703. The side surfaces of the second connection portion 702 and the second linkage portion 704 are flush with the end surfaces of the second mounting portion 703. The second toggle portion 701 is connected to the end of the second connection portion 702, and the two sides of the second toggle portion 701 protrude from the two sides of the second connection portion 702. Figure 4 , Figure 6 and Figure 8 As shown, the second moving part 701 at one end of the second lever 7 passes through the second through hole 407 of the housing 4 and is pressed on the second push rod 201, and the second linkage part 704 at the other end of the second lever 7 is arranged corresponding to the second trigger part 943 of the moving contact 94. The second trigger part 943 is a protruding structure arranged on the top surface of the mounting end 942, and the second linkage part 704 of the second lever 7 abuts against the mounting end 942 of the moving contact 94 and is located between the second trigger part 943 and the swing end 941.

[0051] like Figure 13, Figure 17 and Figure 18 As shown, a second torsion spring 8 for resetting the second lever 7 is provided between the second lever 7 and the housing 4. The structure of the second torsion spring 8 is as shown in FIG. Figure 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 snapped into the second limiting groove 406 of the housing 4 .

[0052] The working process of the circuit breaker status indication structure of the present invention is as follows: Figure 3 As shown, the handle 92 is swung until the trip mark 912 is aligned, and the circuit breaker trips. Figure 4 As shown, the first trigger portion 922 of the handle 92 does not touch the first linkage portion 504 of the first lever 5, and the first toggle portion 501 of the first 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; the moving contact 94 is disconnected from the static contact 95, and the second trigger portion 943 of the moving contact 94 does not touch the second linkage portion 704 of the second lever 7, and the second toggle portion 701 of the second 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.

[0053] like Figure 5 As shown, the operating handle 92 is aligned with the opening mark 911, and the circuit breaker is opened. Figure 6 As shown, the first trigger portion 922 of the handle 92 presses the first linkage portion 504 of the first lever 5, driving the first lever 5 to rotate, and the first toggle portion 501 of the first 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, and the normally open contact of the first micro switch 1 is converted into a normally closed contact, and the normally closed contact is converted into a normally open contact; at the same time, the handle 92 drives the moving contact 94 to disconnect from the static contact 95, and the second trigger portion 943 of the moving contact 94 does not touch the second linkage portion 704 of the second lever 7, and the second toggle portion 701 of the second 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.

[0054] like Figure 7 As shown, the operating handle 92 is aligned with the closing mark 913, and the circuit breaker is closed. Figure 8As shown, the first trigger portion 922 of the handle 92 does not touch the first linkage portion 504 of the first toggle lever 5, and the first toggling portion 501 of the first toggle lever 5 keeps pressing the first push rod 101 of the first microswitch 1, so that the contact state of the first microswitch 1 remains unchanged; at the same time, the handle 92 drives the moving contact 94 to close with the static contact 95, and the second trigger portion 943 of the moving contact 94 pushes up the second linkage portion 704 of the second toggle lever 7, driving the second toggle lever 7 to rotate. The second toggling portion 701 of the second toggle lever 7 no longer presses the second push rod 201 of the second microswitch 2, so that the contact state of the second microswitch 2 is converted. The normally open contact of the second microswitch 2 is converted into a normally closed contact, and the normally closed contact is converted into a normally open contact.

[0055] It should be noted that the circuit breaker state indication structure of the present invention is also provided with a control processing module to receive the signals of the two groups of microswitches, perform logical processing, and then output signals representing the three states of tripping, opening, and closing of the low-voltage circuit breaker to the remote host computer. This is the prior art and will not be elaborated here.

[0056] As Figures 21 - 23 shown, the circuit breaker of the present invention further includes a circuit breaker voltage isolation structure, which includes a circuit board 3, a bracket 901, a push plate 902, a return spring 903, a torsion spring 904, a knob rod 905 and two pins 906. The bracket 901 is installed on the circuit board 3, the push plate 902 is slidably installed on the bracket 901, the return spring 903 is abutted between one end of the bracket 901 and 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 3, and the knob rod 905 has a cam 9051, and the cam 9051 has a top abutting surface 9052. The two pins 906 are installed on the circuit board 3, one of the pins 906 is electrically connected to an external circuit through a wire 907, and the other pin 906 is electrically connected to the circuit board 3. The torsion spring 904 is installed on the push plate 902, and the torsion spring 904 has two pins 9041. The two pins 9041 of the torsion spring 904 are abutted on the push plate 902 and can be connected to the two pins 906 in one-to-one correspondence.

[0057] When the cam 9051 of the knob rod 905 does not contact the abutting surface 9052, the two pins 9041 of the torsion spring 904 are not connected to the two pins 906, and the circuit board 3 is not connected to the external circuit; when the knob rod 905 is rotated, the cam 9051 of the knob rod 905 pushes the push plate 902 to slide on the bracket 901. When the cam 9051 of the knob rod 905 rotates to abut against the abutting surface 9052 and contacts the push plate 902, the torsion spring 904 on the push plate 902 moves with the push plate 902 until the two pins 9041 are connected to the two pins 906, realizing the conduction between the circuit board 3 and the external circuit. The circuit breaker voltage isolation structure of the present invention can disconnect the connection between the external circuit and the circuit board through physical isolation, ensuring the safety of the operator during use and testing. It can quickly and accurately disconnect or connect the external circuit and the circuit board, and the operation is simple and convenient; the rotational motion is converted into a translational motion to push the torsion spring to connect with the pin, and the conduction synchronization is good.

[0058] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A circuit breaker status indication structure, comprising a base (93), a handle (92), a moving contact (94), a static contact (95), a first micro switch (1) and a second micro switch (2). The handle (92) and the moving contact (94) are respectively swingably mounted in the base (93). The handle (92) is drivingly connected to the moving contact (94) and can drive the moving contact (94) to disconnect or close with the static contact (95). It is characterized in that: When the switch is opened, the handle (92) triggers the first microswitch (1) and the moving contact (94) does not trigger the second microswitch (2); when the switch is closed, the handle (92) does not trigger the first microswitch (1) and the moving contact (94) triggers the second microswitch (2); when the switch is tripped, the handle (92) does not trigger the first microswitch (1) and the moving contact (94) does not trigger the second microswitch (2); or, when the switch is opened, the handle (92) does not trigger the first microswitch (1) and the moving contact (94) triggers the second microswitch (2); when the switch is closed, the handle (92) triggers the first microswitch (1) and the moving contact (94) does not trigger the second microswitch (2); when the switch is tripped, the handle (92) The first micro switch (1) is not triggered and the moving contact (94) also does not trigger the second micro switch (2); the first micro switch (1) has a first push rod (101), and the second micro switch (2) has a second push rod (201); the handle (92) is provided with a first triggering portion (922), and the first triggering portion (922) of the handle (92) drives the first push rod (101) to achieve the conversion of the contact state of the first micro switch (1); the moving contact (94) is provided with a second triggering portion (943), and the second triggering portion (943) of the moving contact (94) drives the second push rod (201) to achieve the conversion of the contact state of the second micro switch (2).

2. The circuit breaker status indication structure according to claim 1, wherein: It also includes a shell (4) and a circuit board (3), wherein the shell (4) is installed in the base (93), the shell (4) is provided with a mounting groove (401) for mounting the circuit board (3), the moving contact (94) is located below the handle (92), the circuit board (3) is installed in the mounting groove (401) of the shell (4) and is located between the handle (92) and the moving contact (94), the first micro switch (1) is installed on the top surface of the circuit board (3) and is located below the handle (92), and the second micro switch (2) is installed on the bottom surface of the circuit board (3) and is located above the moving contact (94).

3. The circuit breaker status indication structure according to claim 2, wherein: The first triggering part (922) of the handle (92) is drivingly connected to the first push rod (101) of the first micro switch (1) through the first lever (5); the first lever (5) is rotatably mounted on the housing (4); the first driving part (501) at one end of the first lever (5) is pressed on the first push rod (101); the first linkage part (504) at the other end is arranged corresponding to the first triggering part (922); a first torsion spring (6) is arranged between the first lever (5) and the housing (4); the two ends of the first torsion spring (6) are connected to the first lever (5) and the housing (4).

4. The circuit breaker status indication structure according to claim 3, characterized in that: The first shifting rod (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 connected in sequence. The first mounting portion (503) is a cylindrical body having a first axial hole (505) and is sleeved on the first mounting shaft (402) of the housing (4). The first connecting portion (502) and the first linkage portion (504) are connected to both sides of the outer wall of the first mounting portion (503) and are flush with the end surfaces of both ends of the first mounting portion (503). 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). The first U-shaped pin (601) at one end of the first torsion spring (6) is buckled on the first connecting portion (502), and the first straight pin (602) at the other end is snapped into the first limiting groove (403) of the housing (4).

5. The circuit breaker status indication structure according to claim 3 or 4, characterized in that: The handle (92) has a guide portion (921) for guiding when swinging, and the first trigger portion (922) is a protruding structure arranged at the end of the guide portion (921); the first micro switch (1) is located at the lower side of the handle (92), the first lever (5) is located directly above the first micro switch (1), and the first linkage portion (504) of the first lever (5) is on the movement track of the first trigger portion (922).

6. The circuit breaker status indication structure according to claim 2, characterized in that: The second triggering part (943) of the moving contact (94) is drivingly connected to the second push rod (201) of the second micro switch (2) through the second lever (7); the second lever (7) is rotatably mounted on the housing (4); the second lever (701) at one end of the second lever (7) is pressed on the second push rod (201); the second linkage part (704) at the other end is arranged corresponding to the second triggering part (943); a second torsion spring (8) is arranged between the second lever (7) and the housing (4); the two ends of the second torsion spring (8) are connected to the second lever (7) and the housing (4).

7. The circuit breaker status indication structure according to claim 6, wherein: The second shifting rod (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 connected in sequence. The second mounting portion (703) is a cylinder having a second axial hole (705) and is sleeved on the second mounting shaft (405) of the housing (4). The second connecting portion (702) and the second linkage portion (704) are connected to the outer walls of the second mounting portion (703) on both sides and are flush with the end surfaces of both ends of the second mounting portion (703). The two sides of the second shifting portion (701) protrude from the 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). 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 snapped into the second limiting groove (406) of the housing (4).

8. The circuit breaker status indication structure according to claim 6 or 7, characterized in that: One end of the moving contact (94) is a swinging end (941) that mates with the static contact (95), and the other end is a mounting end (942). The mounting end (942) of the moving contact (94) is rotatably mounted on the rotating shaft (96) of the base (93). The second triggering portion (943) of the moving contact (94) is a convex structure provided on the top surface of the mounting end (942). The second linkage portion (704) of the second 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).

9. The circuit breaker status indication structure according to claim 1, characterized in that: It further includes an upper cover assembly (91). The upper cover assembly (91) is buckled on the base (93), and an operation through-hole is provided on the upper cover assembly (91). One end of the handle (92) is mounted inside the base (93), and the other end passes through the operation through-hole and extends outside the circuit breaker. On the top surface of the upper cover assembly (91) and on one side of the operation through-hole, a tripping mark (911), a release mark (912), and a closing mark (913) are sequentially provided.

10. The circuit breaker status indication structure according to claim 1, wherein: It further includes a circuit board (3), a bracket (901), a push plate (902), a return spring (903), a torsion spring (904), a knob rod (905), and two pins (906). The bracket (901) is mounted on the circuit board (3). The push plate (902) is slidably mounted on the bracket (901). The return spring (903) abuts between the bracket (901) and one end of the push plate (902). The other end of the push plate (902) cooperates with the knob rod (905). The knob rod (905) is rotatably mounted on the circuit board (3). The knob rod (905) has a cam (9051), and the cam (9051) has a top abutting surface (9052) at the top. The two pins (906) are mounted on the circuit board (3). One of the pins (906) is electrically connected to an external circuit through a wire (907), and the other pin (906) is electrically connected to the circuit board (3). The torsion spring (904) is mounted on the push plate (902). The torsion spring (904) has two pins (9041). The two pins (9041) of the torsion spring (904) abut against the push plate (902) and can be connected to the two pins (906) in a one-to-one correspondence. When the top abutting surface (9052) of the cam (9051) of the knob rod (905) does not contact the push plate (902), the two pins (9041) of the torsion spring (904) are not connected to the two pins (906), and the circuit board (3) is not connected to the external circuit. When the knob rod (905) is rotated, the cam (9051) of the knob rod (905) pushes the push plate (902) to slide on the bracket (901). When rotated until the top abutting surface (9052) of the cam (9051) of the knob rod (905) abuts against the push plate (902), the torsion spring (904) on the push plate (902) moves with the push plate (902) until the two pins (9041) are connected to the two pins (906), realizing the conduction between the circuit board (3) and the external circuit.

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