An intelligent miniature circuit breaker

Abstract

The application relates to an intelligent miniature circuit breaker, and relates to the technical field of circuit protection devices. The intelligent miniature circuit breaker comprises a shell, a manual operating mechanism arranged in the shell, the manual operating mechanism comprising a handle rotationally connected to the shell, an electric operating mechanism arranged in the shell, the electric operating mechanism comprising a motor, a screw rod connected to a rotating shaft of the motor, a sliding sleeve sleeved on the screw rod and in sliding fit with the screw rod, the sliding sleeve being linked to the manual operating mechanism, a circuit board electrically connected to the motor, the circuit board being provided with a free position detection switch and a handle position detection switch on the other side of the sliding sleeve, the free position detection switch being opposite to the free position of the sliding sleeve and being linked to the sliding sleeve, and the handle position detection switch being linked to the handle. Through logical setting of the free position detection switch and the handle position detection switch, the application can effectively detect and judge the bad points, thereby improving the maintenance efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circuit protection device, in particular to a kind of intelligent miniature circuit breaker. BACKGROUND

[0002] Circuit breaker refers to the switch device that can be closed, load and open the current under normal loop condition and can be closed, load and open the current under abnormal loop condition within specified time, in the use of electrical safety, circuit breaker is indispensable circuit protection device.

[0003] The miniature circuit breaker on the market currently, usually needs to be disassembled to carry out a series of inspections after damage, can confirm the damaged part, and the efficiency is relatively low for repair work. SUMMARY

[0004] In order to improve the efficiency of repair, the present application provides a kind of intelligent miniature circuit breaker.

[0005] The intelligent miniature circuit breaker provided by the present application adopts the following technical scheme:

[0006] An intelligent miniature circuit breaker, comprising a shell, a manual operating mechanism is arranged in the shell, the manual operating mechanism includes handle rotationally connected to the shell, an electric operating mechanism is arranged in the shell, the electric operating mechanism includes motor, screw rod connected with the rotating shaft of motor, the screw rod is sleeved with sliding sleeve in sliding fit with the screw rod, the sliding sleeve and the manual operating mechanism are linked, the shell is provided with circuit board electrically connected with the motor, the free position detection switch and the handle position detection switch are arranged on the other side of the circuit board relative to the sliding sleeve, the free position detection switch is opposite to the free position of the sliding sleeve and is linked with the sliding sleeve, and the handle position detection switch is linked with the handle.

[0007] By adopting the above technical scheme, when electrically controlling opening and closing, the motor drives the screw rod to rotate and pushes the sliding sleeve to move, the sliding sleeve drives the handle to swing to realize opening and closing, and after each completion of opening and closing, the motor reverses to drive the sliding sleeve to move to free position standby.

[0008] When the handle can normally realize opening and closing, the handle position detection switch has no signal output, indicating that the handle position detection switch is damaged; if the free position detection switch has no signal output, indicating that the free position detection switch is damaged.

[0009] When the handle cannot normally realize opening and closing, but the handle position detection switch can output opening and closing signal, indicating that the electric operating mechanism is damaged; if the handle position detection switch also has no opening and closing signal output, since the sliding sleeve will trigger the free position detection switch after moving to free position, if the free position detection switch has opening and closing signal output, indicating that the manual operating mechanism is damaged;

[0010] If the free position detection switch and the handle position detection switch do not output signals, the manual control is adopted to open and close the switch, and if the manual control can open and close the switch, it is indicated that the electric operating mechanism is damaged; if the manual control cannot open and close the switch, it is indicated that the manual operating mechanism is damaged, and the electric operating mechanism needs to be checked and judged.

[0011] The logical judgment setting of the free position detection switch and the handle position detection switch can effectively detect and judge the bad points, thereby improving the maintenance efficiency.

[0012] Optionally, the handle comprises a rotating disc rotationally connected with the shell and a control rod arranged radially on the rotating disc, and the side of the rotating disc away from the first connecting rod is provided with an opening trigger block and a closing trigger block, and the opening trigger block and the closing trigger block trigger the handle position detection switch respectively when opening and closing the switch.

[0013] By adopting the above technical scheme, the free position detection switch and the handle position detection switch can further limit the driving of the motor, effectively preventing the motor from moving abnormally.

[0014] During the closing process, the driving motor moves the sliding sleeve to the closing position, and then drives the rotating disc to rotate to make the closing trigger block trigger the handle position switch, indicating that the closing has been completed, and the motor stops working and reverses to drive the sliding sleeve to return to the free position detection switch and stay at the free position.

[0015] During the opening process, the driving motor drives the sliding sleeve to move to the opening position, and then drives the rotating disc to rotate and make the opening trigger block trigger the handle position switch, indicating that the opening has been completed, and the motor stops working and reverses to drive the sliding sleeve to return to the free position detection switch and stay at the free position.

[0016] Optionally, the handle position detection switch comprises a handle closing position detection point and a handle opening position detection point, the opening trigger block triggers the opening detection point signal, and the closing trigger block triggers the closing detection point signal.

[0017] By adopting the above technical scheme, the signals of closing and opening are distinguished, the logical judgment is simplified, and the accuracy of signal judgment is improved.

[0018] Optionally, the circuit board is electrically connected with a motor opening position photoelectric switch and a motor closing position photoelectric switch, the motor opening position photoelectric switch is opposite to the position of the sliding sleeve during the electric opening, and the motor closing position photoelectric switch is opposite to the position of the sliding sleeve during the electric closing.

[0019] By adopting the technical scheme, the logical judgment ability of the bad point is further improved through the setting of the motor opening position photoelectric switch and the motor closing position photoelectric switch.

[0020] In the motor closing process, the motor closing position photoelectric switch detects a signal, the handle position detection switch first detects a closing signal and then detects an opening signal, and the other voltage and current sensors transmit electrical parameter data to the MCU, which is calculated to have no fault current and voltage and other power failure, indicating that the circuit breaker handle has not been successfully closed, and it can be judged that a mechanical buckle failure has occurred.

[0021] In the motor opening process, the motor opening position photoelectric switch detects a signal, the handle position detection switch neither detects a closing signal nor detects an opening signal, and in combination with the temperature sensor, the internal temperature of the circuit breaker rapidly rises, which can be judged that a contact welding failure has occurred.

[0022] In addition, when the handle position detection switch and the free position detection switch are damaged, the two photoelectric switches can also play a replacement role.

[0023] When the handle position detection switch is damaged and the free position detection switch is intact:

[0024] 1) When the handle closing position detection point of the handle position detection switch is damaged, the opening process is not affected, and in the closing process, the motor closing position photoelectric switch is turned on, and the switch is triggered, indicating that the handle is in the closing state.

[0025] 2) When the handle opening position detection point of the handle position detection switch is damaged, the closing process is not affected, and in the opening process, the motor opening position photoelectric switch is turned on, and the switch is triggered, indicating that the handle is in the opening state.

[0026] 3) When both detection points of the handle position detection switch are damaged, both photoelectric switches are turned on.

[0027] When the free position detection switch is damaged and the handle position detection switch is intact:

[0028] After opening and closing, the motor drive sliding sleeve returns to the free position detection exception, and the handle opening and closing position detection signals are triggered to start, and the running time of the motor is controlled to make the sliding sleeve return to the free position.

[0029] When the free position detection switch and the handle position detection switch are damaged:

[0030] Both photoelectric switches are turned on, the motor closing position detection switch signal replaces the handle closing position detection point signal, the motor opening position detection photoelectric switch signal replaces the handle opening position detection point signal, and through time control, the motor drive sliding sleeve returns to the free position.

[0031] Optionally, the side wall of the sliding sleeve is provided with a detection block, the motor opening position photoelectric switch and the detection block position when the motor is opened are opposite, and the motor closing position photoelectric switch and the detection block position when the motor is closed are opposite.

[0032] By adopting the above technical scheme, the sliding limit under the sliding sleeve can be performed to ensure the stability of the sliding sleeve during sliding. The detection block is provided to facilitate the installation of the two photoelectric switches and the detection of the position of the sliding sleeve.

[0033] Optionally, the circuit board comprises a main board, the side wall of the main board is provided with a detection plate, the detection plate is in a strip shape, and the motor opening position photoelectric switch, the motor closing position photoelectric switch and the free position detection switch are arranged on the detection plate.

[0034] By adopting the above technical scheme, the detection plate is connected to the main board in a strip shape, which facilitates the installation of the switches and the signal feedback during linkage.

[0035] Optionally, the side of the sliding sleeve facing the detection plate is provided with a toggle plate, and the toggle plate is linked with the free position detection switch.

[0036] Optionally, the free position detection switch comprises a left pressure detection point and a right pressure detection point, and the sliding sleeve triggers the left pressure detection point or the right pressure detection point after being reset to the free position after the motor is opened or closed.

[0037] By adopting the above technical scheme, when the free position switch is damaged and the handle position detection switch is intact:

[0038] 1) When the free position detection switch is damaged (the left pressure signal is damaged), the sliding sleeve returns to the free position detection abnormally after being closed, and the handle closing position detection signal is triggered to start to control the running time of the motor, so as to ensure that the sliding sleeve returns to the free position.

[0039] 2) When the free position detection switch is damaged (the right pressure signal is damaged), the sliding sleeve returns to the free position detection abnormally after being opened, and the handle opening position detection signal is triggered to start to control the running time of the motor, so as to ensure that the sliding sleeve returns to the free position.

[0040] Since the distance of the sliding sleeve to the free position after opening or closing is different, the different signals are fed back to determine the different running times of the motor, so as to ensure that the sliding sleeve can return to the free position.

[0041] Optionally, the side wall of the detection block is provided with a limiting plate, and the limiting plate and the toggle plate are located on the two sides of the detection plate, respectively.

[0042] By adopting the above technical scheme, the stability of the detection block during movement is further improved.

[0043] To sum up, the present application comprises at least one of the following beneficial technical effects:

[0044] 1. By setting the logical judgment of the free position detection switch and the handle position detection switch, the bad points can be effectively detected and judged, thereby improving the maintenance efficiency;

[0045] 2. In combination with the motor opening position photoelectric switch and the motor closing position photoelectric switch, the bad points can be further effectively detected and judged to improve the maintenance efficiency;

[0046] 3. The motor opening position photoelectric switch and the motor closing position photoelectric switch can replace the free position detection switch and the handle position detection switch when they are damaged, so as to ensure that the motor does not have abnormal movement problems. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a structural schematic view of the shell removed in the embodiment of the present application.

[0048] Figure 2 is a structural schematic view of the shell removed in the embodiment of the present application.

[0049] Figure 3 is an enlarged schematic view of the A area in Figure 2

[0050] Figure 4 is a structural schematic view of the back side view. Figure 3

[0051] Reference signs: 1, shell; 2, manual operating mechanism; 21, handle; 211, rotating disc; 212, control rod; 3, electric operating mechanism; 31, motor; 32, screw rod; 33, sliding sleeve; 34, detection block; 35, current release; 36, release; 37, connecting rod; 4, movable contact operating mechanism; 5, circuit board; 51, main board; 52, detection board; 6, limiting groove; 7, arc-shaped groove; 8, opening position; 9, free position; 10, closing position; 11, free position detection switch; 111, left pressure detection point; 112, right pressure detection point; 12, handle position detection switch; 121, handle closing position detection point; 122, handle opening position detection point; 13, toggle plate; 14, limiting plate; 15, opening trigger block; 16, closing trigger block; 17, motor opening position photoelectric switch; 18, motor closing position photoelectric switch. DETAILED DESCRIPTION

[0052] The following will be further described in combination with the accompanying Figures 1-4 The present application will be further described in detail.

[0053] The embodiment of the present application discloses a kind of intelligent miniature circuit breaker. ​​

[0054] Referring to Figure 1 , Figure 2 A kind of intelligent miniature circuit breaker, including shell 1, manually operated mechanism 2, electrically operated mechanism 3 are arranged in shell 1.Manually operated mechanism 2 includes handle 21, handle 21 includes rotary disc 211 rotationally connected with shell 1, control rod 212 is fixedly connected with the side wall of rotary disc 211, and control rod 212 is located outside shell 1.Handle 21 is connected with movable contact operating mechanism 4, and movable contact operating mechanism 4 can be controlled to carry out the control of circuit breaker to open and close by rotating handle 21.

[0055] Referring to Figure 1 , Figure 3 Circuit board 5 is fixedly connected in shell 1, and circuit board 5 includes integrally connected mainboard 51 and detection plate 52, detection plate 52 is long strip-shaped and located at one side of mainboard 51, and detection plate 52 is vertically arranged on the side wall of mainboard 51.

[0056] Referring to Figure 1 , Figure 3 Electrically operated mechanism 3 includes motor 31, and motor 31 is fixedly connected in shell 1 and is electrically connected with mainboard 51.The rotary shaft of motor 31 is axially fixedly connected with screw rod 32, and sliding sleeve 33 is slidably arranged on screw rod 32.Sliding bar is fixedly connected in shell 1, and the side of sliding sleeve 33 towards sliding bar is provided with sliding groove matched with sliding bar, so that sliding sleeve 33 can only slide back and forth along the length direction of screw rod 32.

[0057] Electrically operated mechanism 3 further includes current release 35, and sliding sleeve 33 and current release 35 are connected through release member 36, and driving sliding sleeve 33 can trigger current release 35 to open movable contact operating mechanism 4 through release member 36.

[0058] Referring to Figure 3 The side wall of sliding sleeve 33 away from release member 36 is integrally connected with detection block 34, and detection block 34 is located above detection plate 52.The side wall of detection block 34 away from detection plate 52 is provided with opening waist-shaped limiting groove 6, and the side wall of rotary disc 211 and detection block 34 is provided with arc-shaped groove 7, and detection block 34 and rotary disc 211 are connected through connecting rod 37, and the two ends of connecting rod 37 are bent and located in limiting groove 6 and arc-shaped groove 7 respectively.

[0059] Referring to Figure 2 , Figure 3 When electrically opening and closing, the active position of detection block 34 is defined as open position 8, free position 9 and closed position 10, and free position 9 is located between open position 8 and closed position 10.

[0060] When the motor 31 is driven to close the switch, the motor 31 drives the sliding sleeve 33 and the detection block 34 to move from the free position 9 to the closing position 10, and the handle 21 is pushed to rotate by the connecting rod 37, thereby driving the movable contact operating mechanism 4 to close. After closing, the motor 31 is reversed and drives the detection block 34 to move to the free position 9 standby, at this time the end of the connecting rod 37 slides in the arc-shaped groove 7 and does not drive the handle 21 to produce subsequent action.

[0061] When the motor 31 is driven to open the switch, the motor 31 drives the sliding sleeve 33 and the detection block 34 to move from the free position 9 to the opening position 8, and the sliding sleeve 33 drives the tripping part 36 to trigger the current release 35 to open the movable contact operating mechanism 4. After opening, the motor 31 is reversed and drives the detection block 34 to move to the free position 9 standby, at this time the end of the connecting rod 37 abuts against the inner wall of the arc-shaped groove 7 to prepare for the next electric closing.

[0062] When the handle 21 is manually opened and closed, due to the arrangement of the arc-shaped groove 7, the rotation of the handle 21 does not drive the detection block 34 to displace, and the two are relatively independent during manual opening and closing, and the sliding block is always located at the free position 9.

[0063] Referring to Figure 3 , Figure 4 The detection plate 52 is electrically connected with the free position detection switch 11 and the handle position detection switch 12 on the other side of the detection block 34, the free position detection switch 11 is opposite to the free position 9 of the detection block 34, and the handle position detection switch 12 is located on the side of the detection plate 52 close to the handle 21. The free position detection switch 11 and the handle position detection switch 12 are both detector switches, the trigger rod of the detector switch is a bidirectional action center automatic reset type, and the shell 1 is provided with an MCU for receiving and processing signals of the free position detection switch 11 and the handle position detection switch 12.

[0064] The free position detection switch 11 includes a left pressure detection point 111 and a right pressure detection point 112, the left pressure detection point 111 is triggered and sends a left pressure signal when the detection block 34 returns to the free position 9 from the opening position 8, and the right pressure detection point 112 is triggered and sends a right pressure signal when the detection block 34 returns to the free position 9 from the closing position 10.

[0065] The side wall of the sliding sleeve 33 is integrally connected with a toggle plate 13 towards the detection plate 52, so as to toggle the trigger rod of the free position detection switch 11. The side wall of the detection block 34 is integrally connected with a limiting plate 14, and the limiting plate 14 and the toggle plate 13 are located on the two sides of the detection plate 52 respectively.

[0066] Referring to Figure 4, the handle position detection switch 12 includes a handle closing position detection point 121 and a handle opening position detection point 122, and the side wall of the rotating disc 211 is integrally connected with an opening trigger block 15 and a closing trigger block 16. When closing, the closing trigger block 16 pushes the trigger rod of the handle position detection switch 12 and sends a closing position detection signal; when opening, the opening trigger block 15 reversely pushes the trigger rod of the handle position detection switch 12 and sends an opening position detection signal.

[0067] With reference to Figure 3 , the side of the detection plate 52 facing the detection block 34 is electrically connected with a motor opening position photoelectric switch 17 and a motor closing position photoelectric switch 18, the motor opening position photoelectric switch 17 is opposite to the opening position 8 of the detection block 34, and the motor closing position photoelectric switch 18 is opposite to the closing position 10 of the detection block 34. The side of the detection block 34 facing the detection plate 52 is fixedly connected with a reflecting sheet to cooperate with the use of the two photoelectric switches. The trigger signals of the two photoelectric switches are received and processed by the MCU.

[0068] The implementation principle of the intelligent miniature circuit breaker in the embodiment is as follows:

[0069] The bad point detection principle is as follows:

[0070] When the electric control opening and closing is normal, the handle position detection switch 12 has no signal output, indicating that the handle position detection switch 12 is damaged; if the free position detection switch 11 has no signal output, it indicates that the free position detection switch 11 is damaged.

[0071] If the opening and closing cannot be realized, but the handle position detection switch 12 can output the opening and closing signal, it indicates that the electric operating mechanism 3 is damaged; if the handle position detection switch 12 also has no output of the opening and closing signal, since the sliding sleeve 33 moves to the free position 9 to trigger the free position detection switch 11, if the free position detection switch 11 has the opening and closing signal output, it indicates that the manual operating mechanism 2 is damaged.

[0072] If the free position detection switch 11 and the handle position detection switch 12 have no signal output, the manual control opening and closing is adopted, if the manual control opening and closing can be realized, it indicates that the electric operating mechanism 3 is damaged; if the manual control opening and closing cannot be realized, it indicates that the manual operating mechanism 2 is damaged, and the electric operating mechanism 3 needs to be checked and judged separately.

[0073] In the electric closing process, the motor closing position photoelectric switch 18 has a detection signal, the handle position detection switch 12 first detects the closing signal and then detects the opening signal, and the electric parameter data transmitted by other voltage and current sensors to the MCU is calculated to have no fault current and voltage and other power faults, indicating that the circuit breaker handle 21 has not been successfully closed, and it can be judged that a mechanical sliding buckle fault occurs.

[0074] In the process of electrically opening, the motor opening position photoelectric switch 17 detects a signal, and the handle position detection switch 12 neither detects a closing signal nor detects an opening signal. The temperature sensor is arranged in the shell 1, and in combination with the rapid increase of the internal temperature of the circuit breaker, it can be judged that the contact fusion welding fault occurs.

[0075] The principle of replacing the use of the photoelectric switch:

[0076] When the handle position detection switch 12 and the free position detection switch 11 are damaged, the two photoelectric switches can also play a replacement role.

[0077] When the handle position detection switch 12 is damaged and the free position detection switch 11 is intact:

[0078] 1) When the handle closing position detection point 121 of the handle position detection switch 12 is damaged, the opening process does not affect, and the motor closing position photoelectric switch 18 is opened during the closing process. The switch is triggered, indicating that the handle 21 is in the closing state.

[0079] 2) When the handle opening position detection point 122 of the handle position detection switch 12 is damaged, the closing process does not affect, and the motor opening position photoelectric switch 17 is opened during the opening process. The switch is triggered, indicating that the handle 21 is in the opening state.

[0080] 3) When both detection points of the handle position detection switch 12 are damaged, the two photoelectric switches are fully opened.

[0081] When the free position detection switch 11 is damaged and the handle position detection switch 12 is intact:

[0082] 1) When the free position detection switch 11 is damaged (the left pressure signal is damaged), the slide sleeve 33 returns to the free position 9 after closing and detects abnormally. The handle closing position detection signal is triggered to start, and the running time of the motor 31 is controlled to ensure that the slide sleeve 33 returns to the free position 9.

[0083] 2) When the free position detection switch 11 is damaged (the right pressure signal is damaged), the slide sleeve 33 returns to the free position 9 after opening and detects abnormally. The handle opening position detection signal is triggered to start, and the running time of the motor 31 is controlled to ensure that the slide sleeve 33 returns to the free position 9.

[0084] Because the distance of the slide sleeve 33 to the free position 9 after opening and closing is different, two signal feedbacks are used to determine different running times of the motor 31, so that the slide sleeve 33 can return to the free position 9.

[0085] When the free position detection switch 11 and the handle position detection switch 12 are damaged:

[0086] Two photoelectric switches are opened, the signal of the motor closing position detection switch 18 replaces the signal of the handle closing position detection point 121, the signal of the motor opening position detection photoelectric switch 17 replaces the signal of the handle opening position detection point 122, the operation of the motor 31 is time controlled, and the motor 31 drives the sliding sleeve 33 to return to the free position 9.

[0087] Among them, the two photoelectric switches are only opened when the motor 31 is running, and are closed after the running is completed, so as to prolong the service life of the photoelectric switch.

[0088] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A smart miniature circuit breaker, comprising a housing (1), wherein a manual operating mechanism (2) is provided inside the housing (1), the manual operating mechanism (2) comprising a handle (21) rotatably connected to the housing (1), and an electric operating mechanism (3) is provided inside the housing (1), the electric operating mechanism (3) comprising a motor (31) and a screw (32) connected to the rotating shaft of the motor (31), wherein a sliding sleeve (33) is sleeved on the screw (32) and slidably engaged with the screw (32), the sliding sleeve (33) and the manual operating mechanism (2) are linked together, and a circuit board (5) electrically connected to the motor (31) is provided inside the housing (1), characterized in that: On the other side of the circuit board (5) opposite to the sliding sleeve (33), there are a free position detection switch (11) and a handle position detection switch (12). The free position detection switch (11) is opposite to the free position (9) of the sliding sleeve (33) and is linked to the sliding sleeve (33). The handle position detection switch (12) is linked to the handle (21). The circuit board (5) is electrically connected to a motor open position photoelectric switch (17) and a motor close position photoelectric switch (18). The motor open position photoelectric switch (17) is opposite to the position of the sliding sleeve (33) when the motor is opened. The motor close position photoelectric switch (18) is opposite to the position of the sliding sleeve (33) when the motor is closed. If the electric control can open and close normally, and the handle position detection switch (12) has no signal output, it means that the handle position detection switch (12) is damaged; if the free position detection switch (11) has no signal output, it means that the free position detection switch (11) is damaged. If the opening and closing of the circuit cannot be achieved, but the handle position detection switch (12) can output the opening and closing signal, it indicates that the electric operating mechanism (3) is damaged; if the handle position detection switch (12) also does not output the opening and closing signal, the free position detection switch (11) will be triggered after the sliding sleeve (33) moves to the free position (9). If the free position detection switch (11) outputs the opening and closing signal, it indicates that the manual operating mechanism (2) is damaged. If neither the free position detection switch (11) nor the handle position detection switch (12) outputs a signal, then manual control is used to open and close the circuit. If manual control can open and close the circuit, it indicates that the electric operating mechanism (3) is damaged. If manual control cannot open and close the circuit, it indicates that the manual operating mechanism (2) is damaged, and the electric operating mechanism (3) needs to be checked and judged separately. During the electric closing process, the photoelectric switch (18) at the motor closing position detected a signal, and the handle position detection switch (12) first detected the closing signal and then detected the opening signal. Furthermore, the electrical parameter data transmitted to the MCU by other voltage and current sensors showed no fault current or voltage or other electrical faults. This indicates that the circuit breaker handle (21) was not successfully closed, and it can be determined that a mechanical slip fault has occurred. During the electric tripping process, the photoelectric switch (17) at the tripping position of the motor detects a signal, while the handle position detection switch (12) detects neither the closing signal nor the tripping signal. A temperature sensor is installed inside the housing (1), and combined with the rapid increase in the internal temperature of the circuit breaker due to the temperature sensor, it can be determined that a contact welding fault has occurred.

2. The intelligent miniature circuit breaker according to claim 1, characterized in that: The handle (21) includes a turntable (211) rotatably connected to the housing (1) and a control rod (212) radially disposed on the turntable (211). The side wall of the turntable (211) is provided with a tripping trigger block (15) and a closing trigger block (16). When tripping or closing, the tripping trigger block (15) and the closing trigger block (16) respectively trigger the handle position detection switch (12).

3. The intelligent miniature circuit breaker according to claim 2, characterized in that: The handle position detection switch (12) includes a handle closed position detection point (121) and a handle open position detection point (122). The open trigger block (15) triggers the open detection point signal, and the closed trigger block (16) triggers the closed detection point signal.

4. The intelligent miniature circuit breaker according to claim 3, characterized in that: The side wall of the sliding sleeve (33) is provided with a detection block (34). The positions of the motor open position photoelectric switch (17) and the electric open detection block (34) are opposite to each other, and the positions of the motor close position photoelectric switch (18) and the electric close detection block (34) are opposite to each other.

5. The intelligent miniature circuit breaker according to claim 4, characterized in that: The circuit board (5) includes a main board (51), and a detection board (52) is provided on the side wall of the main board (51). The detection board (52) is long and narrow. The motor open position photoelectric switch (17), the motor closed position photoelectric switch (18), and the free position detection switch (11) are all provided on the detection board (52).

6. The intelligent miniature circuit breaker according to claim 5, characterized in that: The sliding sleeve (33) is provided with a toggle plate (13) on the side facing the detection plate (52), and the toggle plate (13) is linked to the free position detection switch (11).

7. The intelligent miniature circuit breaker according to claim 6, characterized in that: The free position detection switch (11) includes a left pressure detection point (111) and a right pressure detection point (112). After the sliding sleeve (33) is reset to the free position (9) after electric opening and closing, it triggers the left pressure detection point (111) or the right pressure detection point (112).

8. The intelligent miniature circuit breaker according to claim 6, characterized in that: The detection block (34) has a limiting plate (14) on its side wall, and the limiting plate (14) and the actuating plate (13) are located on both sides of the detection plate (52).

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