Miniature circuit breaker with overload alarm function

Abstract

The utility model discloses a miniature circuit breaker with an overload alarm function. The circuit breaker comprises a circuit breaker housing which is used for protecting internal electronic components; the adjusting head is used for adjusting the inclination angle of the bimetal and is conductive; the spring assists the adjusting head in adjusting the inclination angle of the bimetal; the bimetal is bent during electric conduction and heating; the high-temperature patch microswitch is in contact with the heated bimetal to be started; and the connector assembly gives an alarm when the high-temperature patch microswitch is triggered. According to the utility model, through the cooperation of the adjusting head, the spring, the bimetallic strip, the high-temperature patch microswitch, the lead and the connector assembly, when the circuit breaker is overloaded, the bimetallic strip in the circuit breaker is heated and bent, so that the bimetallic strip and the high-temperature patch microswitch can be triggered, the purpose of rapid alarm can be achieved, and meanwhile, the circuit breaker is simple in structure and convenient to trigger.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a miniature circuit breaker with an overload alarm function. Background Art

[0002] A circuit breaker is a mechanical switching device that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain time and disconnect current under specified abnormal circuit conditions.

[0003] In some specific situations, power outage is not allowed. When an overload occurs, the existing circuit breaker will operate, thereby cutting off the circuit and causing losses. Therefore, it is necessary to set an overload alarm device inside the circuit breaker to ensure that the product only alarms without operating. However, the overload alarm device in the existing circuit breaker has a complex structure and is difficult to trigger. When the circuit breaker is overloaded, the alarm device cannot be triggered quickly, and the purpose of quick alarm cannot be achieved. Utility Model Content

[0004] The purpose of the present utility model is to provide a miniature circuit breaker with an overload alarm function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a miniature circuit breaker with an overload alarm function, comprising:

[0006] A circuit breaker housing, wherein the circuit breaker housing protects the electronic components inside;

[0007] An adjusting head, which adjusts the tilt angle of the double metal and is conductive;

[0008] A spring, wherein the spring assists the adjusting head in adjusting the tilt angle of the double metal;

[0009] Double gold, the double gold bends when heated during electrical conduction;

[0010] A high-temperature patch micro switch that is activated by contact with the heated double metal;

[0011] A connector that sounds an alarm when a high-temperature patch microswitch is triggered;

[0012] A lead is used to connect the high-temperature patch micro switch and the connector.

[0013] Preferably, the regulating head and the spring are in contact with the double metal, the lead is connected to the high-temperature patch micro switch and extends to the outside, and the connector is an alarm device such as an alarm light and a buzzer.

[0014] Preferably, partitions are installed on both sides of the inside of the circuit breaker housing, a terminal block is installed on the top of the partition, the terminal block is electrically connected to the bimetal, and an arc extinguishing system, an electromagnetic system, a spring handle and a contact system are installed inside the circuit breaker housing, and the spring handle is electrically connected to the contact system through a connecting rod.

[0015] Preferably, the arc extinguishing system is composed of a magnetic conductive sheet, an arc isolation plate and an arc extinguishing chamber, and the contact system is composed of multiple shafts, indicators, trip buckles, lock buckles and multiple rivets.

[0016] Preferably, the spring handle is rotatably connected to the circuit breaker housing, a plurality of connection holes are provided on the end surface of the spring handle, and the spring handle is rotatably connected to the connecting rod through the connection holes.

[0017] Preferably, the terminal block, arc extinguishing system, electromagnetic system and contact system are electrically connected, and a clamping plate is provided at the bottom of the circuit breaker housing.

[0018] Compared with the prior art, the beneficial effect of the present invention is that the miniature circuit breaker with overload alarm function can be quickly alarmed by the user by adjusting the coordination between the head, spring, double metal, high-temperature patch micro switch, lead wire and connector. When the circuit breaker is overloaded, the double metal in the circuit breaker is bent by heat so that the double metal can trigger the high-temperature patch micro switch, thereby achieving the purpose of simple structure and convenient triggering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the main view of the utility model;

[0020] Figure 2 This is a main sectional view of the internal structure of the utility model.

[0021] In the figure: 1. Circuit breaker housing; 2. Adjustment head; 3. Spring; 4. Double metal; 5. High-temperature SMD micro switch; 6. Lead wire; 7. Connector; 8. Arc extinguishing system; 9. Partition; 10. Terminal block; 11. Electromagnetic system; 12. Spring handle; 13. Connecting rod; 14. Contact system; 15. Card. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-2The present invention provides an embodiment of a miniature circuit breaker with an overload alarm function, comprising:

[0024] A circuit breaker housing 1, which protects the electronic components inside;

[0025] Adjusting head 2, which adjusts the tilt angle of double gold 4 and can conduct electricity;

[0026] Spring 3, spring 3 assists the adjusting head 2 to adjust the tilt angle of the double gold 4. The user can adjust the tilt angle of the double gold 4 by adjusting the cooperation between the adjusting head 2 and the spring 3;

[0027] Double gold 4, double gold 4 bends when conducting heat. After being bent by heat, double gold 4 can directly trigger the high-temperature patch micro switch 5, so that the connector 7 can be triggered quickly;

[0028] The high-temperature patch micro switch 5 is activated by contact with the heated double metal 4. The high-temperature patch micro switch 5 is adhered to the inside of the circuit breaker housing 1 through the high-temperature patch. The installation is simple and there is no need to set a special fixing structure inside the circuit breaker housing 1, making the injection molding production of the circuit breaker housing 1 simpler.

[0029] Connector 7, which sounds an alarm when the high-temperature patch micro switch 5 is triggered;

[0030] Lead 6 connects the high-temperature chip micro switch 5 and the connector 7.

[0031] In this embodiment, the adjusting head 2 and the spring 3 are in contact with the double gold 4, the lead 6 is connected to the high-temperature patch microswitch 5 and extends to the outside, and the connector 7 is an alarm device such as an alarm light and a buzzer. The user can squeeze the high-temperature patch microswitch 5 through the adjusting head 2 to drive the spring 3 to move, thereby adjusting the inclination angle of the double gold 4, so that after the double gold 4 is conductive and heated, the double gold 4 bends to trigger the high-temperature patch microswitch 5, and the time taken to trigger the high-temperature patch microswitch 5 is reduced.

[0032] In this embodiment, partitions 9 are installed on both sides of the inside of the circuit breaker housing 1, and a terminal block 10 is installed on the top of the partition 9. The user connects the external line to the circuit breaker through the terminal block 10. The terminal block 10 is electrically connected to the double metal 4. The arc extinguishing system 8, the electromagnetic system 11, the spring handle 12 and the contact system 14 are installed inside the circuit breaker housing 1. The spring handle 12 is electrically connected to the contact system 14 through the connecting rod 13.

[0033] In this embodiment, the arc extinguishing system 8 is composed of a magnetic conductive sheet, an arc isolation plate and an arc extinguishing chamber, and the contact system 14 is composed of multiple shafts, indicators, jumpers, locks and multiple rivets. The arc extinguishing system 8 prevents the generation of arcs inside the circuit breaker through the cooperation between the magnetic conductive sheet, the arc isolation plate and the arc extinguishing chamber.

[0034] In this embodiment, the spring handle 12 is rotatably connected to the circuit breaker housing 1. A plurality of connection holes are provided on the end surface of the spring handle 12. The spring handle 12 is rotatably connected to the connecting rod 13 through the connection holes, so that the spring handle 12 can drive the contact system 14 to start or close through the connecting rod 13 when rotating.

[0035] In this embodiment, the terminal block 10, arc extinguishing system 8, electromagnetic system 11 and contact system 14 are electrically connected, and a clamping plate 15 is provided at the bottom of the circuit breaker housing 1, through which the user can stably and firmly install the circuit breaker inside the electrical box.

[0036] Working principle: When the circuit breaker is working, if an overload occurs inside the circuit breaker, the double metal 4 will bend due to the heat of conduction, and the bent double metal 4 will contact the high-temperature patch microswitch 5, activating the high-temperature patch microswitch 5, thereby activating the connector 7 to sound an alarm.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or scope of the present invention. Therefore, the embodiments of the present invention are illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and scope of equivalents of the claims be encompassed within the present invention. Any reference numerals in the claims should not be construed as limiting the claim to which they relate.

Claims

1. A miniature circuit breaker with an overload alarm function, characterized in that: include: A circuit breaker housing (1), wherein the circuit breaker housing (1) protects internal electronic components; An adjusting head (2), the adjusting head (2) adjusts the tilt angle of the double gold (4) and is electrically conductive; A spring (3), wherein the spring (3) assists the regulating head (2) in adjusting the tilt angle of the double metal (4); Double gold (4), the double gold (4) bends when heated during electrical conduction; A high-temperature patch micro switch (5), wherein the high-temperature patch micro switch (5) is activated by contact with the heated bimetal (4); A connector (7), wherein the connector (7) issues an alarm when the high-temperature patch microswitch (5) is triggered; A lead (6) is provided, wherein the lead (6) connects the high-temperature patch micro switch (5) and the connector (7).

2. The miniature circuit breaker with overload alarm function according to claim 1, characterized in that: The regulating head (2) and the spring (3) are in contact with the double metal (4); the lead (6) is connected to the high-temperature patch micro switch (5) and extends to the outside; the connector (7) is an alarm light or a buzzer.

3. The miniature circuit breaker with overload alarm function according to claim 1, characterized in that: Partitions (9) are installed on both sides of the circuit breaker housing (1), a wiring seat (10) is installed on the top of the partition (9), and the wiring seat (10) is electrically connected to the double metal (4). An arc extinguishing system (8), an electromagnetic system (11), a spring handle (12) and a contact system (14) are installed inside the circuit breaker housing (1), and the spring handle (12) is electrically connected to the contact system (14) through a connecting rod (13).

4. The miniature circuit breaker with overload alarm function according to claim 3, characterized in that: The arc extinguishing system (8) is composed of a magnetic conductive sheet, an arc isolating plate and an arc extinguishing chamber, and the contact system (14) is composed of a plurality of shafts, an indicator, a trip buckle, a lock buckle and a plurality of rivets.

5. The miniature circuit breaker with overload alarm function according to claim 3, characterized in that: The spring handle (12) is rotatably connected to the circuit breaker housing (1); a plurality of connection holes are provided on the end surface of the spring handle (12); and the spring handle (12) is rotatably connected to the connecting rod (13) through the connection holes.

6. The miniature circuit breaker with overload alarm function according to claim 3, characterized in that: The terminal block (10), the arc extinguishing system (8), the electromagnetic system (11) and the contact system (14) are electrically connected, and a clamping plate (15) is provided at the bottom of the circuit breaker housing (1).

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