CN219716775U - Miniature circuit breaker - Google Patents

Abstract

The utility model discloses a miniature circuit breaker, relates to the technical field of miniature circuit breakers, and aims to solve the problems that the miniature circuit breaker used in the prior art is inconvenient to network when in use, so that an maintainer cannot know which circuit breaker is broken after the circuit breaking occurs and the use is inconvenient. The miniature circuit breaker's internally mounted has the mainboard, and mainboard and miniature circuit breaker pass through fastening screw fixed connection, install treater and communication module on the preceding terminal surface of mainboard respectively, and treater and communication module all with mainboard electric connection, miniature circuit breaker's internally mounted has stabiliser and battery backup respectively, battery backup and mainboard all with stabiliser electric connection, miniature circuit breaker's internally mounted has the dc-to-ac converter, dc-to-ac converter and mainboard electric connection, the switch handle is installed to one side of miniature circuit breaker, and the switch handle rotates with miniature circuit breaker to be connected, miniature circuit breaker's internally mounted has return spring.

Description

Miniature circuit breaker

Technical Field

The utility model relates to the technical field of miniature circuit breakers, in particular to a miniature circuit breaker.

Background

Miniature circuit breaking is the most widely used terminal protection electrical appliance in the introduction of a building electrical terminal distribution device. The protection device is used for protecting single-phase and three-phase short circuits, overload, overvoltage and the like below 125A, and comprises four types of single-pole 1P, two-pole 2P, three-pole 3P and four-pole 4P. The miniature circuit breaker consists of an operating mechanism, contacts, a protection device (various), an arc extinguishing system and the like. The main contact is manually operated or electrically switched on. After the main contact is closed, the free tripping mechanism locks the main contact at the closing position. The coil of the overcurrent release and the thermal element of the thermal release are connected in series with the main circuit, and the coil of the undervoltage release is connected in parallel with the power supply. When the circuit is short-circuited or severely overloaded, the armature of the overcurrent release is attracted, so that the free release mechanism acts, and the main contact opens the main circuit. When the circuit is overloaded, the thermal element of the thermal trip heats to bend the bimetallic strip and push the free trip mechanism to act. When the circuit is under-voltage, the armature of the under-voltage release is released, so that the free release mechanism is also enabled to act;

for example, the application publication number is CN211507550U, and a miniature circuit breaker comprises a shell, a handle, a brake separating mechanism, an electronic release, a bimetallic strip, a wiring terminal, a main processing unit, a sampling unit, a power supply unit, a temperature sensor and a current transformer; the main processing unit controls the electronic release to act, and pushes the brake separating mechanism to separate the miniature circuit breaker and push the brake separating mechanism to separate the miniature circuit breaker after the bimetallic strip is heated and deformed. The temperature of the bimetallic strip is acquired through a temperature sensor, the main processing unit controls the electronic release to act according to the temperature acquired by the temperature sensor, overload switching-off is carried out on the miniature circuit breaker, double threshold judgment is carried out by combining the current acquired by the current transformer, and overload switching-off is carried out on the miniature circuit breaker;

the problem that overload that current miniature circuit breaker exists does not trip has been solved in above-mentioned application to improved miniature circuit breaker's reliability, security and practicality, but inconvenient networking when miniature circuit breaker of present use uses, thereby the maintainer can't learn which circuit breaker has taken place to break after appearing breaking, and it is inconvenient to use, and consequently market urgency need develop a miniature circuit breaker to help people solve current problem.

Disclosure of Invention

The utility model aims to provide a miniature circuit breaker, which solves the problems that the miniature circuit breaker used at present is inconvenient to network when in use, so that an maintainer cannot know which circuit breaker is broken after the circuit breaking, and the use is inconvenient.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a miniature circuit breaker, includes miniature circuit breaker, miniature circuit breaker's internally mounted has the mainboard, and mainboard and miniature circuit breaker pass through fastening screw fixed connection, install treater and communication module on the preceding terminal surface of mainboard respectively, and treater and communication module all with mainboard electric connection.

Preferably, the voltage stabilizer and the standby battery are respectively installed in the miniature circuit breaker, the standby battery and the main board are electrically connected with the voltage stabilizer, the inverter is installed in the miniature circuit breaker, and the inverter is electrically connected with the main board.

Preferably, a switch handle is installed on one side of the miniature circuit breaker, the switch handle is rotationally connected with the miniature circuit breaker, a return spring is installed in the miniature circuit breaker and fixedly connected with the switch handle, a switch mechanism is installed in the miniature circuit breaker and is rotationally connected with the switch handle, and a movable contact rod is installed at one end of the switch mechanism.

Preferably, the miniature circuit breaker is internally provided with a clamping head, the clamping head is rotationally connected with the miniature circuit breaker, the switching mechanism can be engaged with the clamping head for connection, and the miniature circuit breaker is internally provided with an arc extinguisher.

Preferably, the magnetic protector and the bimetallic strip are respectively arranged in the miniature circuit breaker, and the magnetic protector and the bimetallic strip are fixedly connected with the miniature circuit breaker.

Preferably, an upper wiring terminal and a lower wiring terminal are respectively arranged in the miniature circuit breaker, and the upper wiring terminal and the lower wiring terminal are fixedly connected with the miniature circuit breaker.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the main board is arranged in the miniature circuit breaker, the processor and the communication module are arranged on the front end face of the main board, the processor can judge whether the miniature circuit breaker is in a sudden power-off state or not, then the power-off signal is sent to the terminal by the communication module, and the positioning chip is arranged in the communication module, so that an maintainer can conveniently and rapidly find the miniature circuit breaker with the circuit breaking function, and the miniature circuit breaker is more convenient to use.

2. According to the utility model, through the arrangement of the magnetic protector and the bimetallic strip, when the miniature circuit breaker is short-circuited, the magnetic protector charges to generate magnetic force, the movable contact rod is propped against the upper wiring end, so that the circuit breaking effect is realized, the bimetallic strip deforms after being heated, the clamping head is extruded, the switching mechanism is separated from the clamping head, and the circuit breaking effect is realized, so that the miniature circuit breaker has the double circuit breaking working effect, and the miniature circuit breaker is more reliable to use.

Drawings

Fig. 1 is a front view of a miniature circuit breaker of the present utility model;

fig. 2 is a schematic view of an internal structure of the miniature circuit breaker of the present utility model;

FIG. 3 is an enlarged schematic view of the utility model at A;

fig. 4 is an enlarged schematic view of the present utility model at B.

In the figure: 1. a miniature circuit breaker; 2. a switch handle; 3. an upper wiring terminal; 4. a lower terminal; 5. a movable contact rod; 6. a magnetic protector; 7. a switching mechanism; 8. bimetallic strips; 9. an inverter; 10. a main board; 11. a voltage stabilizer; 12. a standby battery; 13. a return spring; 14. a chuck; 15. a processor; 16. a communication module; 17. an arc extinguisher.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides a miniature circuit breaker, includes miniature circuit breaker 1, and miniature circuit breaker 1's internally mounted has mainboard 10, and mainboard 10 and miniature circuit breaker 1 pass through fastening screw fixed connection, installs treater 15 and communication module 16 on the preceding terminal surface of mainboard 10 respectively, and treater 15 and communication module 16 all with mainboard 10 electric connection.

When the miniature circuit breaker is used, through the setting of mainboard 10, treater 15 and communication module 16, mainboard 10 installs in the inside of miniature circuit breaker 1, and treater 15 and communication module 16 are installed on the preceding terminal surface of mainboard 10, can judge through treater 15 that miniature circuit breaker 1 is in the state of breaking off the power supply suddenly, then utilize communication module 16 to send the terminal with the outage signal to communication module 16 embeds there is the location chip, thereby can make things convenient for the maintainer to seek miniature circuit breaker 1 that takes place to break fast, make this miniature circuit breaker 1 use more conveniently.

Further, the voltage stabilizer 11 and the standby battery 12 are respectively installed in the miniature circuit breaker 1, the standby battery 12 and the main board 10 are electrically connected with the voltage stabilizer 11, the inverter 9 is installed in the miniature circuit breaker 1, the inverter 9 is electrically connected with the main board 10, and when the miniature circuit breaker 1 is powered off, the main board 10 can provide power to continue to work through the standby battery 12.

Further, switch handle 2 is installed to one side of miniature circuit breaker 1, and switch handle 2 rotates with miniature circuit breaker 1 to be connected, and miniature circuit breaker 1's internally mounted has return spring 13, return spring 13 and switch handle 2 fixed connection, and miniature circuit breaker 1's internally mounted has switch mechanism 7, and switch mechanism 7 rotates with switch handle 2 to be connected, and movable contact rod 5 is installed to switch mechanism 7's one end, and switch handle 2's rotation can drive switch mechanism 7 rotation to drive movable contact rod 5 and rotate, realize the effect of circuit breaking and passageway.

Further, the internally mounted of miniature circuit breaker 1 has chuck 14, and chuck 14 and miniature circuit breaker 1 rotate to be connected, and switch gear 7 can be connected with chuck 14 interlock, and miniature circuit breaker 1's internally mounted has arc extinguisher 17, and arc extinguisher 17 passes through fastening screw fixed connection with miniature circuit breaker 1, and arc extinguisher 17 is used for carrying out the arc extinguishing work for the access circuit.

Further, the magnetic protector 6 and the bimetallic strip 8 are respectively installed in the miniature circuit breaker 1, the magnetic protector 6 and the bimetallic strip 8 are fixedly connected with the miniature circuit breaker 1, the magnetic protector 6 is electrically connected with the movable contact rod 5, and the bimetallic strip 8 can deform after being heated, so that the thermal protection function is achieved.

Further, an upper terminal 3 and a lower terminal 4 are respectively installed inside the miniature circuit breaker 1, the upper terminal 3 and the lower terminal 4 are fixedly connected with the miniature circuit breaker 1, the upper terminal 3 can be in contact electrical connection with the movable contact rod 5, and the lower terminal 4 is in electrical connection with the movable contact rod 5 through a connecting wire.

Working principle: when the miniature circuit breaker is used, the switch handle 2 is pulled upwards, the switch mechanism 7 rotates and drives the movable contact rod 5 to move upwards, the movable contact rod 5 is in contact with the upper wiring end 3, when a short circuit occurs, the magnetic protector 6 generates magnetic force, the movable contact rod 5 is pushed away from the upper wiring end 3, circuit breaking is achieved, when the miniature circuit breaker 1 is overheated, the bimetallic strip 8 is heated to deform, the clamping head 14 is extruded, the clamping head 14 is enabled to rotate, the switch mechanism 7 is retracted into the bayonet of the clamping head 14, the circuit breaking effect is achieved, the upper wiring end 3 is subjected to arc extinction through the arrangement of the arc extinguisher 17, meanwhile, a circuit breaking signal can be sent to the terminal through the main board 10, the processor 15 and the communication module 16, and a maintainer can conveniently and rapidly find the miniature circuit breaker 1 with the circuit breaking.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A miniature circuit breaker comprising a miniature circuit breaker (1), characterized in that: the miniature circuit breaker (1) is internally provided with a main board (10), the main board (10) is fixedly connected with the miniature circuit breaker (1) through fastening screws, a processor (15) and a communication module (16) are respectively arranged on the front end face of the main board (10), and the processor (15) and the communication module (16) are electrically connected with the main board (10).

2. A miniature circuit breaker according to claim 1, wherein: the miniature circuit breaker is characterized in that a voltage stabilizer (11) and a standby battery (12) are respectively arranged in the miniature circuit breaker (1), the standby battery (12) and a main board (10) are electrically connected with the voltage stabilizer (11), an inverter (9) is arranged in the miniature circuit breaker (1), and the inverter (9) is electrically connected with the main board (10).

3. A miniature circuit breaker according to claim 1, wherein: the miniature circuit breaker is characterized in that a switch handle (2) is arranged on one side of the miniature circuit breaker (1), the switch handle (2) is rotationally connected with the miniature circuit breaker (1), a return spring (13) is arranged in the miniature circuit breaker (1), the return spring (13) is fixedly connected with the switch handle (2), a switch mechanism (7) is arranged in the miniature circuit breaker (1), the switch mechanism (7) is rotationally connected with the switch handle (2), and a movable contact rod (5) is arranged at one end of the switch mechanism (7).

4. A miniature circuit breaker according to claim 3, wherein: the miniature circuit breaker is characterized in that a clamping head (14) is arranged in the miniature circuit breaker (1), the clamping head (14) is rotationally connected with the miniature circuit breaker (1), the switching mechanism (7) can be connected with the clamping head (14) in a meshed mode, and an arc extinguisher (17) is arranged in the miniature circuit breaker (1).

5. A miniature circuit breaker according to claim 1, wherein: the magnetic protector (6) and the bimetallic strip (8) are respectively installed in the miniature circuit breaker (1), and the magnetic protector (6) and the bimetallic strip (8) are fixedly connected with the miniature circuit breaker (1).

6. A miniature circuit breaker according to claim 1, wherein: an upper wiring terminal (3) and a lower wiring terminal (4) are respectively arranged in the miniature circuit breaker (1), and the upper wiring terminal (3) and the lower wiring terminal (4) are fixedly connected with the miniature circuit breaker (1).