A circuit breaker trip trigger controller

Abstract

This invention relates to a circuit breaker trip trigger controller, comprising a control circuit board and an actuator. The actuator includes a motor, a lead screw, and a worm gear. The motor is connected to the worm gear via a reducer. A worm gear is located at the lower part of the vertically placed lead screw, meshing with the worm gear. A helical screw is located in the middle of the lead screw, and a lead screw bushing is fitted around the helical screw. The inner wall of the lead screw bushing has a bushing thread, and a hollow baffle is located at the upper part of the lead screw bushing. This invention can automatically receive external control signals to complete actions. When the external control mechanism issues a trip command, the MCU on the control circuit board receives a low-level signal, causing the motor to rotate. The motor, through the reducer, drives the pressure pin downward, pressing the circuit breaker button, and the circuit breaker trips.

Description

Technical Field

[0001] This invention belongs to the field of circuit breaker technology, specifically relating to a circuit breaker trip trigger controller. Background Technology

[0002] Currently, circuit breakers used in China lack fault current monitoring and intelligent switch control functions. In critical scenarios, such as important large-scale events in stadiums, conference centers, and open-air plazas, when the power consumption of equipment exceeds the carrying capacity of power cables, they cannot automatically disconnect the equipment or trip in time to stop power supply to the branch line. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention proposes a circuit breaker trip trigger controller, which can quickly act after an external command is issued, cut off the circuit, and transmit the circuit breaker status back to the external control unit.

[0004] The technical solution of this invention is as follows: a circuit breaker trip trigger controller, comprising an actuator, the actuator including a motor (11), a lead screw (21), and a worm gear (14), the motor (11) being connected to the worm gear (14) via a reducer (15), a turbine (20) being provided at the lower part of the vertically placed lead screw (21), the turbine (20) meshing with the worm gear (14), and a helical screw (23) being provided in the middle of the lead screw (21). The screw (23) is fitted with a lead screw bushing (13). The inner wall of the lead screw bushing (13) is provided with a bushing thread (35). The inner walls of both ends of the lead screw bushing (13) are provided with a lead screw bushing inner groove (34). The inner wall of the lead screw bushing (13) is provided with a bushing thread (35). The outer surface of one end of the lead screw bushing (13) is provided with a polygonal lead screw bushing outer rib (36). The upper part of the lead screw bushing (13) is provided with a hollow baffle (22).

[0005] Preferably, the circuit breaker trip trigger controller is provided with a top cover (2), a housing (6) and a base (5). The top cover (2) is engaged with the buckle (10) on the housing (6) by a slot (32) provided on its outer surface, and the base (5) is connected to the housing (6) by a rotating shaft (4).

[0006] Preferably, the top cover (2) is provided with a hollow pressure needle fixing cap (33). The upper part of the pressure needle fixing cap (33) is a hollow column shape, and the cross-section of the lower part of the inner cavity is a polygonal structure. The baffle (22) is located inside the polygonal structure, and the outer cross-section of the lead screw bushing (13) is consistent with the polygonal structure.

[0007] Preferably, the circuit breaker trip trigger controller is provided with a pressure needle (1), the top of the pressure needle (1) is a pressure needle cap, and a spring (16) is sleeved on the outside of the pressure needle (1). The spring is located in the cylindrical shape of the pressure needle fixing cap (33), and the pressure needle (1) passes through the hole in the center of the baffle (22) and is adjacent to the top of the lead screw (21).

[0008] Preferably, the circuit breaker trip trigger controller is provided with a pressure needle (1), the top of the pressure needle (1) is a pressure needle cap, and a spring (16) is sleeved on the outside of the pressure needle (1). The pressure needle (1) passes through the hole in the center of the baffle (22), the hole in the center of the lead screw (21), and is adjacent to the bottom of the lead screw (21).

[0009] Preferably, the housing is provided with a motor bracket (9), the motor (11) is mounted on the motor bracket (9), a pad (12) is provided on the top of the motor bracket (9), and a control circuit board (18) is provided on the pad (12).

[0010] Preferably, the base (5) is provided with a base groove, and a base bottom groove (29) is provided on the outside of the bottom of the base (5), and a base adhesive layer (31) is provided in the base bottom groove (29).

[0011] Preferably, a bottom groove (25) is provided on the outside of the bottom of the housing (6), and a housing adhesive layer (26) is provided in the bottom groove (25).

[0012] Preferably, the control circuit board (18) includes an MCU and a driver chip. The driver chip is connected to the motor (11) via a control line (3). The MCU is connected to the driver chip, an external control line, and a remote control component via the control line (3).

[0013] The driver chip is connected to an external 12V power supply via a power line (19).

[0014] Beneficial effects of this invention:

[0015] 1. The present invention has a reasonable structure, small size, and can automatically receive external control commands to perform actions.

[0016] 2. The trip trigger controller described in this invention can quickly act after an external command is issued, cut off the circuit, and transmit the circuit break status back to the external control unit.

[0017] 3. This invention has two pressing methods: manual action and automatic action, which can reliably and safely achieve automatic control. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the rectangular groove structure of the present invention;

[0020] Figure 3 This is a schematic diagram showing the position of the motor in this invention;

[0021] Figure 3 This is a schematic cross-sectional view of the motor position in this invention;

[0022] Figure 4 This is a schematic diagram showing the position of the circuit board pad of the present invention;

[0023] Figure 5 This is a schematic diagram showing the location of the circuit board in this invention;

[0024] Figure 6 This is a schematic diagram of the position of the lead screw bushing of the present invention;

[0025] Figure 7 This is a schematic diagram of the turbine worm gear position in this invention;

[0026] Figure 8 This is a schematic diagram of the bottom structure of the housing of the present invention;

[0027] Figure 9 This is a schematic diagram of the adhesive layer structure of the shell of the present invention;

[0028] Figure 10 This is a schematic diagram of the bottom groove structure of the base of the present invention;

[0029] Figure 11 This is a schematic diagram of the base groove structure of the present invention;

[0030] Figure 12 This is a schematic diagram of the adhesive layer structure of the base of the present invention;

[0031] Figure 13 This is a schematic diagram of the top cover structure of the present invention;

[0032] Figure 14 This is a schematic diagram of the back structure of the top cover of the present invention;

[0033] Figure 15 This is a schematic diagram of the lead screw bushing structure of the present invention;

[0034] Figure 16 This is a schematic diagram of the trip control line wiring of the present invention.

[0035] Figure 17 This is a schematic diagram of the present invention installed on a circuit breaker.

[0036] In the diagram, 1. Pressure needle; 2. Top cover; 3. Control line; 4. Shaft; 5. Base; 6. Housing; 7. Arc-shaped body; 8. Rectangular groove; 9. Motor bracket; 10. Buckle; 11. Motor; 12. Pad; 13. Lead screw bushing; 14. Worm rod; 15. Reducer; 16. Spring; 17. Motor baffle; 18. Control circuit board; 19. Power line; 20. Turbine; 21. Lead screw; 22. Baffle plate; 23. Spiral screw; 24. Side rib; 25. Bottom groove of housing; 26. Housing adhesive layer; 27. Lead screw hole; 28. Bottom side rib of base; 29. ​​Bottom groove of base; 30. Base groove; 31. Base adhesive layer; 32. Slot; 33. Pressure needle fixing cap; 34. Inner slot of lead screw bushing; 35. Bushing thread; 36. Outer rib of lead screw bushing; 37. Circuit breaker trip trigger controller; 38. Circuit breaker. Detailed Implementation

[0037] See Figures 1 to 17 As shown, the present invention includes a top cover (2), a housing (6), and a base (5). The top cover (2) is engaged with a buckle (10) on the housing (6) via a slot (32) on its outer surface. Figure 2 and Figure 14 The base (5) is connected to the housing (6) via a pivot (4), see Figure 1 .

[0038] The present invention includes an actuator comprising a motor (11), a lead screw (21), and a worm gear (14). The motor (11) is connected to the worm gear (14) via a reducer (15). The lead screw (21) is vertically placed inside a housing (6), and a turbine (20) is provided at the lower part of the lead screw (21). Figure 6 The turbine (20) meshes with the worm gear (14), and a helical screw (23) is provided in the middle of the lead screw (21), see Figure 7 A lead screw bushing (13) is fitted on the outside of the spiral screw (23). The inner wall of the lead screw bushing (13) is provided with a bushing thread (35). One end of the lead screw bushing (13) is provided with a polygonal lead screw bushing outer rib (36). The upper part of the lead screw bushing (13) is provided with a hollow baffle (22).

[0039] See Figure 14 As shown, the top cover (2) is provided with a hollow pressure needle fixing cap (33). The upper part of the pressure needle fixing cap (33) is a hollow column shape, and the cross-section of its lower inner cavity is a polygonal structure. The outer part of the lead screw bushing (13) is a polygonal structure consistent with the polygonal structure of the pressure needle fixing cap (33). The structural dimensions are the same, so that the lead screw bushing (13) can be nested inside it. The baffle (22) is located inside the polygonal structure, and the lead screw bushing (13) is located below it.

[0040] The circuit breaker trip trigger controller (37) of the present invention is provided with a pressure needle (1), the top of which is a pressure needle cap. The pressure needle cap is round and its diameter is larger than the diameter of the rod of the pressure needle, and also larger than the diameter of the central hole of the column shape at the top of the pressure needle fixing cap (33). Figure 6 As shown, a spring (16) is fitted around the pressure needle (1), the spring being located within the cylindrical shape of the pressure needle fixing cap (33). The pressure needle (1) passes through the hole in the center of the baffle (22) and is adjacent to the top of the lead screw (21), as shown. Figure 7 As shown.

[0041] Another implementation of the pressure needle is that the circuit breaker trip trigger controller (37) is provided with a pressure needle (1), the top of the pressure needle (1) is a pressure needle cap, and a spring (16) is sleeved on the outside of the pressure needle (1). The pressure needle (1) passes through the hole in the center of the baffle (22), the hole in the center of the lead screw (21), and is adjacent to the bottom of the lead screw (21).

[0042] See Figure 2 , Figure 3 and Figure 5 As shown, the housing is provided with a motor bracket (9), the motor (11) is mounted on the motor bracket (9), and a motor baffle (17) is provided at the output shaft of the motor (11). Figure 3 and Figure 5 A pad (12) is provided on the top of the motor bracket (9), see Figure 4 A control circuit board (18) is provided on the pad (12), see Figure 5 The circuit board is connected to control lines.

[0043] See Figure 10 and Figure 11 As shown, the base (5) is provided with a base groove (30) and a lead screw hole (27). When the motor (11) is turned on, the lead screw (21) passes through the lead screw hole (27) and connects with the circuit breaker (38) to form a circuit breaker (38) disconnection device. A base bottom groove (29) is provided on the outside of the bottom of the base (5), and base bottom side ribs (28) are provided around the groove. A base adhesive layer (31) is provided in the base bottom groove (29). See Figure 12 As shown, the base adhesive layer (31) can be selected as 3M strong double-sided adhesive layer.

[0044] See Figure 2 , Figure 8 and Figure 9As shown, the housing (6) is an integral structure spliced ​​from a rectangular groove (8) and an arc-shaped body (7). The motor (11) is set in the rectangular groove (8), and the lead screw (21) is set in the arc-shaped body (7). The bottom of the housing (6) is provided with a housing bottom groove (25). The housing bottom groove (25) is provided with a side rib (24) and a housing adhesive layer (26). The thickness of the housing adhesive layer (26) is greater than the height of the side rib (24).

[0045] See Figure 16 As shown, the control circuit board (18) includes an MCU and a driver chip. The driver chip is connected to the motor (11) via a control line (3). The MCU is connected to the driver chip, an external control line, and a remote control component via control lines.

[0046] The driver chip is connected to an external 12V power supply via a power line (19).

[0047] In order to achieve refined control capabilities for orderly power consumption management and thus improve the refined management of orderly power consumption, this invention enables automatic remote load control for traditional non-intelligent circuit breakers (38) in the main branch circuits of users.

[0048] To achieve load control of this type of circuit breaker (38), a circuit breaker trip trigger controller (37) is designed and applied. The circuit breaker trip trigger controller (37) works in conjunction with the load monitoring terminal to trip the circuit breaker (38) by jogging the trip button.

[0049] Applicable to: traditional molded case circuit breakers (38) of different brands and specifications, such as 80A, 120A, 200A, 250A, 400A, 630A, 800A, 1000A, and 1250A.

[0050] like Figure 16 As shown, this invention uses the LTU 12V power supply of an external control module, and the signal control input terminals are the positive and negative ports of the LTU remote control. (See figure:)

[0051] 1. The LTU provides a 12V power supply to the controller. The negative terminal of the LTU remote control output is grounded (common), and the positive terminal provides the control signal ctrl to the controller.

[0052] 2. The positive terminal of the LTU remote control output is also the controller's access detection terminal. Before issuing a trip command, the LTU will detect the potential of this connection terminal. If it is not zero, it means that the controller is connected and ready, and a trip command can be issued.

[0053] 3. Controller Reset Timing: After the controller is powered on, the reset procedure is executed first. The controller's built-in circuit controls the motor to reverse, causing the controller's pressure pin to rise, completing the controller reset and entering the ready state.

[0054] 4. When the LTU issues a trip command, the internal relay of the LTU closes, and the ctrl output is low. When the controller receives this low level, it controls the built-in motor to rotate. The motor drives the pressure needle downward through the reduction mechanism. Press the ctrip button of the circuit breaker (38), and the circuit breaker (38) completes the trip. After the circuit breaker (38) is triggered to trip, the motor reverses and resets the pressure needle (1).

[0055] 5. When the controller needs to manually control the circuit breaker (38) to trip, press the pressure pin (1) of the present invention to perform the manual tripping operation. After the circuit breaker (38) has tripped, release the pressure pin (1).

[0056] Working principle: The white CTRL signal line in the middle control line (3) sends a trip command, causing the control lines (3) and power lines (19) on both sides to form a 12V voltage (the duration is adjustable by software). Then the motor (11) works, and the worm gear (14) drives the turbine (20) to rotate. Due to the limited position structure of the turbine (20) and the lead screw (21), the lead screw rotates, and the shaft of the lead screw (21) is mounted on the top cover (2), thus driving the lead screw (21) to push down. The force of the push is fed back to the magnitude of the current (generally 120mA). When the MCU chip detects that it exceeds 120mA, the DC motor reverses. When the upward process reaches a certain current value, the MCU chip detects and judges and stops the upward movement, completing the reset. This also executes the trip function of the remotely controllable circuit breaker (38). If the motor (11) loses power during the execution process, all devices stop at the moment of power failure. This could cause the circuit breaker (38) to keep pressing the TRIP button, making it impossible to achieve the closing function of the circuit breaker (38). The present invention has a function of performing a reset once when the power is restored.

[0057] Installation method of the present invention: 3M strong double-sided tape is used to fix the TRIP button of the circuit breaker (38).

[0058] 1. Surface treatment:

[0059] Clean the adhesive area on the surface of the circuit breaker (38) (be careful to avoid the TRIP button on the circuit breaker (38)).

[0060] 2. Installation pretreatment:

[0061] First, test install 3M strong double-sided tape and check the positioning (ensure that the center hole of the 3M strong double-sided tape is concentric with the TRIP button hole of the circuit breaker (38)).

[0062] 3. Installation of this invention:

[0063] Ensuring the installation dimensions are met, open the base (5). The circuit breaker (38) base (5) has 3M strong double-sided adhesive tape attached. Peel off the release paper from the 3M strong double-sided adhesive tape on the base. Align the TRIP button with the hole on the base and attach the base (5) to the circuit breaker (38). After pressing firmly, peel off the release paper from the 3M strong double-sided adhesive tape on the housing (6) and close it, ensuring the housing (6) and base (5) are firmly bonded. The controller installation on the circuit breaker (38) is now complete.

[0064] 4. Press

[0065] When bonding, you must press out as much of the residual air between the 3M super double-sided tape and the bonding surface as possible. Residual air is one of the reasons for the decrease in adhesion, so you must apply sufficient pressing pressure.

[0066] 5. The tripping action can only be performed 48 hours after the controller is pasted and fixed (after 48 hours the 3M strong double-sided adhesive reaches its maximum adhesion).

Claims

1. A circuit breaker trip trigger controller, comprising an actuator, characterized in that: The actuator includes a motor (11), a lead screw (21), and a worm (14). The motor (11) is connected to the worm (14) through a reducer (15). A worm wheel (20) is provided at the lower part of the vertically placed lead screw (21), and the worm wheel (20) meshes with the worm (14). A spiral screw (23) is provided in the middle of the lead screw (21), and a lead screw bushing (13) is sleeved on the outside of the spiral screw (23). The inner wall of the lead screw bushing (13) is provided with a bushing thread (35), and a hollow baffle (22) is provided at the upper part of the lead screw bushing (13). The circuit breaker trip trigger controller is provided with a top cover (2), a housing (6) and a base (5). The top cover (2) is fastened to the housing (6) by a slot (32) on its outer surface and a buckle (10) on the housing (6). The base (5) is connected to the housing (6) by a rotating shaft (4). The top cover (2) is provided with a hollow pressure needle fixing cap (33). The upper part of the pressure needle fixing cap (33) is a hollow column shape, and the cross-section of the lower part of the inner cavity is a polygonal structure. The baffle (22) is located inside the polygonal structure, and the outer cross-section of the lead screw bushing (13) is consistent with the polygonal structure.

2. The circuit breaker trip trigger controller according to claim 1, characterized in that: The circuit breaker trip trigger controller is provided with a pressure needle (1), the top of the pressure needle (1) is a pressure needle cap, and a spring (16) is sleeved on the outside of the pressure needle (1). The spring is located in the cylindrical shape of the pressure needle fixing cap (33). The pressure needle (1) passes through the hole in the center of the baffle (22) and is adjacent to the top of the lead screw (21).

3. The circuit breaker trip trigger controller according to claim 1, characterized in that: The circuit breaker trip trigger controller is provided with a pressure needle (1), the top of the pressure needle (1) is a pressure needle cap, and a spring (16) is sleeved on the outside of the pressure needle (1). The pressure needle (1) passes through the hole in the center of the baffle (22), the hole in the center of the lead screw (21), and is adjacent to the bottom of the lead screw (21).

4. The circuit breaker trip trigger controller according to any one of the preceding claims, characterized in that: The housing is provided with a motor bracket (9), the motor (11) is mounted on the motor bracket (9), a pad (12) is provided on the top of the motor bracket (9), and a control circuit board (18) is provided on the pad (12).

5. The circuit breaker trip trigger controller according to claim 1, characterized in that: The base (5) is provided with a base groove, and a base bottom groove (29) is provided on the outside of the bottom of the base (5), and a base adhesive layer (31) is provided in the base bottom groove (29).

6. The circuit breaker trip trigger controller according to claim 1, characterized in that: The bottom of the housing (6) is provided with a housing bottom groove (25) on the outside, and a housing adhesive layer (26) is provided in the housing bottom groove (25).

7. The circuit breaker trip trigger controller according to claim 4, characterized in that: The control circuit board (18) includes an MCU and a driver chip. The driver chip is connected to the motor (11) via a control line (3). The MCU is connected to the driver chip, an external control line, and a remote control component via the control line (3). The driver chip is connected to an external 12V power supply via a power line (19).

8. The circuit breaker trip trigger controller according to claim 5, characterized in that: The material of the base adhesive layer (31) is 3M high-strength double-sided adhesive.

9. The circuit breaker trip trigger controller according to claim 6, characterized in that: The material of the shell adhesive layer (26) is 3M high-strength double-sided adhesive.

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