An alarm circuit breaker for preventing illegal tampering operations

Abstract

The present invention relates to an alarm circuit breaker for preventing illegal tampering operations, which includes a housing, an operating mechanism, an electromagnetic release, a moving contact, a static contact, an arc extinguishing chamber, an incoming line terminal, and an outgoing line terminal. An anti-illegal tampering operation mechanism is provided at a position corresponding to the outgoing line connection hole on the housing. The anti-illegal tampering operation mechanism includes a protective cover plate, a microswitch, an electromagnet, and a driving rod. The microswitch is electrically connected to the incoming line terminal. The microswitch is provided with pins connected to an external alarm. One end of the driving rod is engaged with the push rod of the electromagnetic release, and a linkage cooperation between the push rod and the driving rod is formed. The protective cover plate can trigger the microswitch and realize the connection or disconnection of the microswitch. The present invention has the advantages of simple structure, stable and reliable performance, high safety, and preventing illegal tampering operation alarm.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to a circuit breaker with an alarm to prevent illegal tampering. Background Art

[0002] Miniature circuit breakers, also known as miniature circuit breakers, are suitable for overload and short-circuit protection of AC 50 / 60Hz rated voltage 230 / 400V, rated current not exceeding 125A lines. They can also be used for infrequent line operation conversion under normal circumstances. Miniature circuit breakers are mainly used in various places such as industry, commerce, high-rise and residential buildings. Existing miniature circuit breakers do not have the function of preventing illegal tampering of the outgoing line. The outgoing line connection screws of the miniature circuit breaker can be loosened at will, and others can connect and pull the wires at will, which is easy to cause safety accidents and greatly affect the safe and reliable operation of the entire circuit system. Therefore, it is very necessary to design a miniature circuit breaker with the function of preventing illegal tampering of the outgoing line. 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 with a simple structure, stable and reliable performance and high safety to prevent illegal tampering and operation alarm.

[0004] To achieve the above-mentioned purpose, the present invention adopts an anti-illegal tampering operation alarm circuit breaker, including a shell, an operating mechanism, an electromagnetic release, a moving contact, a static contact, an arc extinguishing chamber, an incoming line terminal, and an outgoing line terminal. The shell is provided with an anti-illegal tampering operating mechanism at the corresponding outgoing line wiring hole. The anti-illegal tampering operating mechanism includes a protective cover plate rotatably arranged on the shell and covering the outgoing line wiring hole, a micro switch arranged in the shell and matched with the protective cover plate, an electromagnet electrically connected to the micro switch, and a driving rod rotatably arranged in the shell and linked with the electromagnet. The micro switch is electrically connected to the incoming line terminal, and a pin connected to an external alarm is arranged on the micro switch. One end of the driving rod is engaged with the push rod of the electromagnetic release, and the push rod and the driving rod are linked. The protective cover can trigger the micro switch and realize the connection or disconnection of the micro switch.

[0005] The beneficial effects of the above structure are: the anti-illegal tampering operating mechanism can effectively prevent others from arbitrarily connecting or pulling wires at the outlet end, avoid causing safety accidents, and effectively ensure the safe and reliable operation of the entire circuit system. During operation, when others remove the protective cover, the micro switch loses the restriction of the protective cover, the micro switch is turned on, the micro switch controls the alarm to sound an alarm, the micro switch controls the electromagnet to energize, the electromagnet attracts the driving rod, the driving rod drives the push rod of the electromagnetic release to move, and the push rod drives the lock of the operating mechanism to move, so that the circuit breaker can be tripped and opened, thereby ensuring the safety of the line and avoiding electric shock to personnel. Therefore, the circuit breaker has the advantages of simple structure, stable and reliable performance, and high safety.

[0006] In particular, the micro switch has a button extending outside the housing and cooperating with the protective cover, and one side of the protective cover has an arcuate contact portion cooperating with the button, the arcuate contact portion contacts the button, and forms a limit match between the arcuate contact portion and the button. The protective cover is provided with an arcuate contact portion for triggering the micro switch, thereby ensuring that the protective cover can reliably trigger the micro switch, which is conducive to improving the working reliability of the anti-illegal tampering operating mechanism.

[0007] In particular, one end of the driving rod has a suction part that matches the electromagnet, and the other end of the driving rod has a clamping groove that matches the push rod, and the clamping groove is clamped on the push rod. The driving rod is provided with a suction part that matches the electromagnet. When the electromagnet is energized, the electromagnet can reliably suck the suction part, drive the driving rod to reliably move, the driving rod is clamped on the push rod, the driving rod can reliably drive the push rod to move, and the push rod can push the lock of the operating mechanism, thereby realizing the tripping and opening of the circuit breaker, thereby ensuring the safety of the line.

[0008] In particular, a positioning sleeve is provided on the driving rod, a positioning column matched with the positioning sleeve is provided in the housing, the positioning sleeve is sleeved on the positioning column, and a rotational connection and cooperation between the driving rod and the positioning column is formed. The positioning sleeve of the driving rod is sleeved on the positioning column of the housing, so that the assembly of the driving rod and the housing is facilitated, and the driving rod can be ensured to rotate reliably on the positioning column, which is conducive to improving the working reliability of the circuit breaker.

[0009] In particular, a positioning shaft is provided on the housing corresponding to the protective cover plate, a positioning hole is provided on the other side of the protective cover plate, the positioning shaft is inserted into the positioning hole, and a rotational connection cooperation between the protective cover plate and the positioning shaft is formed, and a torsion spring is provided between the protective cover plate and the housing. The protective cover plate is rotatably arranged on the positioning shaft of the housing, thereby facilitating the assembly of the protective cover plate and the housing, which is beneficial to improving the assembly efficiency of the circuit breaker.

[0010] In particular, the torsion spring is sleeved on the positioning shaft, one end of the torsion spring abuts against the positioning groove of the protective cover, and the other end of the torsion spring abuts against the limiting groove of the housing. The torsion spring is sleeved on the positioning shaft, thereby facilitating the assembly of the torsion spring with the housing and the protective cover, which is beneficial to improving the assembly efficiency of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereogram of an embodiment of the present invention.

[0012] Figure 2 It is a three-dimensional diagram of the internal structure of an embodiment of the present invention.

[0013] Figure 3 It is a front view of the internal structure of an embodiment of the present invention.

[0014] Figure 4 It is a three-dimensional diagram of a driving rod according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] like Figures 1 to 4 As shown, the embodiment of the present invention is an anti-illegal tampering operation alarm circuit breaker, including a housing 10, an operating mechanism 11, an electromagnetic release 12, a moving contact 13, a static contact 14, an arc extinguishing chamber 15, an incoming wiring terminal 16, and an outgoing wiring terminal 17. The housing 10 is provided with an anti-illegal tampering operating mechanism 20 at a position corresponding to the outgoing wiring hole 101. The anti-illegal tampering operating mechanism 20 includes a protective cover plate 21 rotatably arranged on the housing 10 and covering the outgoing wiring hole 101, and a protective cover plate 21 arranged in the housing 10 and cooperating with the protective cover plate 21. A micro switch 22, an electromagnet 23 electrically connected to the micro switch 22, and a drive rod 24 rotatably arranged in the housing 10 and linked with the electromagnet 23, the micro switch 22 is electrically connected to the incoming line terminal 16, the micro switch 22 is provided with a pin 221 connected to the external alarm, one end of the drive rod 24 is engaged with the push rod 121 of the electromagnetic release 12, and the push rod 121 and the drive rod 24 are linked, the protective cover 21 can trigger the micro switch 22, and realize the connection or disconnection of the micro switch 22.

[0016] like Figures 2 to 3As shown, the micro switch 22 has a button 222 extending outside the housing 10 and cooperating with the protective cover plate 21. One side of the protective cover plate 21 has an arc-shaped abutting portion 211 cooperating with the button 222. The arc-shaped abutting portion 211 abuts on the button 222, and forms a limit cooperation between the arc-shaped abutting portion 211 and the button 222. An arc-shaped abutting portion for triggering the micro switch is provided on the protective cover plate, so as to ensure that the protective cover plate can reliably trigger the micro switch, which is beneficial to improving the working reliability of the anti-illegal tampering operating mechanism. One end of the driving rod 24 has an attracting portion 241 cooperating with the electromagnet 23, and the other end of the driving rod 24 has a clamping groove 242 cooperating with the push rod 121. The clamping groove 242 is clamped on the push rod 121. An attracting portion cooperating with the electromagnet is provided on the driving rod. When the electromagnet is energized, the electromagnet can reliably attract the attracting portion, drive the driving rod to act reliably. The driving rod is clamped on the push rod, and the driving rod can reliably drive the push rod to act. The push rod can push the lock of the operating mechanism, so as to realize the tripping and opening of the circuit breaker, thereby ensuring the safety of the line. A positioning sleeve 243 is provided on the driving rod 24, and a positioning post 102 cooperating with the positioning sleeve 243 is provided in the housing 10. The positioning sleeve 243 is sleeved on the positioning post 102, and forms a rotational connection cooperation between the driving rod 24 and the positioning post 102. The positioning sleeve of the driving rod is sleeved on the positioning post of the housing, which is convenient for the assembly of the driving rod and the housing, and can ensure that the driving rod can rotate reliably on the positioning post, which is beneficial to improving the working reliability of the circuit breaker. A positioning rotating shaft 103 is provided on the housing 10 corresponding to the protective cover plate 21. A positioning hole 212 is provided on the other side of the protective cover plate 21. The positioning rotating shaft 103 is inserted into the positioning hole 212, and forms a rotational connection cooperation between the protective cover plate 21 and the positioning rotating shaft 103. A torsion spring 25 is provided between the protective cover plate 21 and the housing 10. The protective cover plate is rotatably arranged on the positioning rotating shaft of the housing, which is convenient for the assembly of the protective cover plate and the housing, and is beneficial to improving the assembly efficiency of the circuit breaker. The torsion spring 25 is sleeved on the positioning rotating shaft 103. One end of the torsion spring 25 abuts on the positioning groove 213 of the protective cover plate 21, and the other end of the torsion spring 25 abuts in the limit groove 104 of the housing 10. The torsion spring is sleeved on the positioning rotating shaft, which is convenient for the assembly of the torsion spring with the housing and the protective cover plate, and is beneficial to improving the assembly efficiency of the circuit breaker.

[0017] The anti-illegal tampering operating mechanism can effectively prevent others from randomly paralleling wires or pulling and connecting wires at the outgoing line end, avoid safety accidents, and effectively ensure the safe and reliable operation of the entire circuit system. During operation, when others remove the protective cover plate, the micro switch loses the restriction of the protective cover plate, the micro switch is turned on, the micro switch controls the alarm to sound, the micro switch controls the electromagnet to be energized, the electromagnet attracts the driving rod, the driving rod drives the push rod of the electromagnetic release to act, and the push rod drives the lock of the operating mechanism to act, so as to realize the tripping and opening of the circuit breaker, ensure the safety of the line, and avoid electric shock to personnel. Therefore, this circuit breaker has the advantages of simple structure, stable and reliable performance, and high safety.

Claims

1. An alarm circuit breaker for preventing illegal tampering operations, comprising a housing, an operating mechanism, an electromagnetic release, a moving contact, a static contact, an arc extinguishing chamber, an incoming line terminal, and an outgoing line terminal, characterized in that: An anti-illegal tampering operating mechanism is arranged at the position corresponding to the outlet wiring hole on the shell, and the anti-illegal tampering operating mechanism includes a protective cover plate rotatably arranged on the shell and covering the outlet wiring hole, a micro switch arranged in the shell and matched with the protective cover plate, an electromagnet electrically connected to the micro switch, and a driving rod rotatably arranged in the shell and linked with the electromagnet. The micro switch is electrically connected to the incoming wiring terminal, and a pin connected to an external alarm is arranged on the micro switch. One end of the driving rod is engaged with the push rod of the electromagnetic release, and the push rod and the driving rod are linked. The protective cover plate can trigger the micro switch and realize the connection or disconnection of the micro switch.

2. The anti-illegal tampering operation alarm circuit breaker according to claim 1, wherein: The micro switch has a button extending outside the shell and cooperating with the protective cover. One side of the protective cover has an arcuate contact portion cooperating with the button. The arcuate contact portion contacts the button and forms a limit fit between the arcuate contact portion and the button.

3. The anti-illegal-tampering operation alarm circuit breaker according to claim 1 or 2, characterized in that: One end of the driving rod is provided with a suction portion matched with the electromagnet, and the other end of the driving rod is provided with a clamping groove matched with the push rod, and the clamping groove is clamped on the push rod.

4. The anti-illegal tampering operation alarm circuit breaker according to claim 1 or 2, characterized in that: The driving rod is provided with a positioning sleeve, the housing is provided with a positioning column matched with the positioning sleeve, the positioning sleeve is sleeved on the positioning column, and forms a rotational connection between the driving rod and the positioning column.

5. The anti-illegal tampering operation alarm circuit breaker according to claim 2, characterized in that: A positioning shaft is arranged on the shell corresponding to the protective cover plate, and a positioning hole is arranged on the other side of the protective cover plate. The positioning shaft is inserted into the positioning hole and constitutes a rotational connection between the protective cover plate and the positioning shaft. A torsion spring is arranged between the protective cover plate and the shell.

6. The anti-illegal tampering operation alarm circuit breaker according to claim 5, characterized in that: The torsion spring is sleeved on the positioning shaft, one end of the torsion spring abuts against the positioning groove of the protective cover plate, and the other end of the torsion spring abuts against the limiting groove of the shell.

Images