CN206271631U - A multifunctional miniature circuit breaker - Google Patents

Abstract

The utility model discloses a multifunctional small circuit breaker, which comprises several circuit breaker bodies arranged side by side, a power mechanism linked with the handle of the circuit breaker body, and a rotary tripping piece linked with the rotary tripping hole of the circuit breaker body , the linkage between the power mechanism and the handle and the rotary release is controlled by the clutch, realizing the functions of opening, closing and tripping of the circuit breaker body. A cavity is set in the circuit breaker body, and in the cavity, Built-in leakage modules, undervoltage modules, surge modules, remote communication modules, etc. or circuit boards and wires are required to realize the circuit breaker body with multiple functions.

Description

A multifunctional miniature circuit breaker

technical field

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

Background technique

The terminal actuators of the domestic power supply network are generally small molded case circuit breakers or small leakage circuit breakers. The main models are C45 (DZ47), C65, DZ47LE and series of external circuit breakers for electric energy meters.

At present, with the development of my country's intelligent low-voltage networked power distribution, and the intelligent power distribution system's requirements for full-current selective protection of the power supply network, circuit breakers are required to have overload and short-circuit protection, over- and under-voltage protection, leakage protection, and automatic reclosing. , Communication function, power supply network terminal also requires a modular combination of multi-functional and remote automatic operation of the small circuit breaker.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a multifunctional miniature circuit breaker with automatic reclosing function, and can selectively install leakage module, undervoltage module, surge module and remote communication module.

In order to achieve the above object, the utility model provides the following technical solutions:

A multifunctional small circuit breaker, comprising several circuit breaker bodies arranged side by side, a power mechanism linked with the handle of the circuit breaker body, and a rotary tripping piece linked with the rotary tripping hole of the circuit breaker body, the circuit breaker The shell of the main body is provided with a cavity for installing various functional modules. The power mechanism includes a casing, a bevel gyratory wheel, a straight tooth gyratory wheel, a motor for driving the bevel tooth gyratory wheel, and a circuit breaker body. The transmission shaft linked with the handle, the transmission shaft is provided with a handle spur gear meshed with the spur gyratory wheel; the bevel tooth gyratory wheel is provided with a bevel tooth gyratory wheel body and a release part linked with the rotary release The straight-toothed rotary wheel is placed on the bevel-toothed rotary wheel body and rotates coaxially; the straight-toothed rotary wheel is respectively provided with a first clutch block, and the bevel-toothed rotary wheel body is provided with the first clutch block The second clutch block, when the bevel tooth rotary wheel rotates clockwise, the first clutch block and the second clutch block interlock to drive the straight tooth rotary wheel to rotate, when the bevel tooth rotary wheel rotates counterclockwise, the first The clutch block is separated from the second clutch block.

The utility model further provides that: the output shaft of the motor is provided with a bevel gear, and the bevel gear meshes with the bevel gyratory wheel.

The utility model further provides that: the power mechanism further includes a support for supporting the bevel-toothed gyratory wheel, and the supporter is against one side of the bevel-toothed gyratory wheel.

The utility model is further provided that: the rotary tripping part includes a tripping part body that is rotated on the casing and a reset torsion spring that drives it to reset. The end face of the tripping part body is provided with a rotating shaft, and the rotating shaft is inserted into the In the tripping hole, the side of the tripping part body is provided with a driving part. When the bevel tooth gyratory wheel is rotating, the tripping part will press the driving part to drive the rotating tripping part to rotate, thereby driving its side position The rotating trip holes of the circuit breaker bodies installed side by side rotate synchronously, so that the circuit breaker bodies trip.

The utility model further sets: the number of the first clutch block and the second clutch block are both two, the first clutch block is symmetrically arranged on the end face of the straight-toothed rotary wheel, and the second clutch block is symmetrically distributed on the The end face of the bevel gyro wheel body.

The beneficial effects of the utility model: the multifunctional small circuit breaker of the present invention is suitable for the development of intelligent low-voltage networked power distribution in my country and the demand of the intelligent power distribution system for the full current selective protection of the power supply network. The linkage of the fasteners is used for clutch control, which realizes the functions of opening, closing and tripping of the circuit breaker body. A cavity is set in the circuit breaker body, and leakage modules, undervoltage modules, and surge modules can be built in the cavity as required. Surge module, remote communication module, etc. or circuit board and wires, etc., to realize that the circuit breaker body has multiple functions.

Description of drawings

Fig. 1 is an exploded diagram of a kind of multifunctional small circuit breaker of the utility model;

Fig. 2 is a state diagram when the power mechanism of a multifunctional small circuit breaker of the utility model is switched on;

Fig. 3 is a state diagram when the power mechanism of a multifunctional small circuit breaker of the utility model is switched on and tripped;

Fig. 4 is a cross-sectional view of a power mechanism of a multifunctional miniature circuit breaker of the present invention;

Fig. 5 is a structural schematic diagram of a bevel gear gyratory wheel;

Fig. 6 is a structural schematic diagram of a straight-toothed rotary wheel;

Fig. 7 is a schematic structural diagram of a rotary release;

Fig. 8 is a working principle diagram of a multifunctional miniature circuit breaker of the present invention.

Explanation of Reference Signs: 1. Circuit breaker body; 11. Rotary tripping hole; 12. Cavity; 13. Handle; 2. Power mechanism; 21. Chassis; Body; 222, tripping part; 223, second clutch block; 23, straight-toothed rotary wheel; 231, first clutch block; 24, motor; 25, drive shaft; 26, handle spur gear; 27, bevel gear; 28 . Supporting piece; 3. Rotating tripping piece; 31. Tripping piece body; 32. Resetting torsion spring; 33. Rotating shaft; 34. Driving part.

detailed description

A multifunctional miniature circuit breaker of the present invention will be further described in detail with reference to accompanying drawings 1 to 8 .

As can be seen from Figure 1, a multifunctional miniature circuit breaker includes several circuit breaker bodies 1 arranged side by side, a power mechanism 2 linked with the handle 13 of the circuit breaker body 1, and a rotary tripping hole 11 of the circuit breaker body 1 Linked rotary release 3, the housing of the circuit breaker body 1 is provided with a cavity 12 for installing various functional modules, and a leakage module, an undervoltage module, and a surge module can be built in the cavity 12 as required , remote communication modules, etc. or circuit boards and wires, etc., to realize that the circuit breaker body 1 has multiple functions. The leakage module, undervoltage module, surge module, remote communication module, etc., or circuit boards and wires are existing technologies. Here I won't go into details.

As can be seen from Figures 1 and 3, the power mechanism 2 includes a casing 21, a bevel gyratory wheel 22, a straight tooth gyratory wheel 23, a motor 24 for driving the bevel tooth gyratory wheel 22, and a connection with the circuit breaker body 1. The transmission shaft 25 linked with the handle 13 is made of square steel and interlocks with the square hole in the center of the handle 13 of the circuit breaker body 1 mentioned above. The transmission shaft 25 is provided with a handle that meshes with the straight-toothed rotary wheel Spur gear 26, the rotation of the handle Spur gear 26 will drive the handle 13 of the circuit breaker body 1 to close or open; Buckle 222; the straight-toothed rotary wheel 23 is placed on the bevel-toothed rotary wheel body 221 and rotates coaxially; the straight-toothed rotary wheel 23 is respectively provided with a first clutch block 231, and the bevel-toothed rotary wheel body 221 is provided with There is a second clutch block 223 matched with the first clutch block 231. When the bevel tooth rotary wheel 22 rotates clockwise, the first clutch block 231 and the second clutch block 223 drive the straight tooth rotary wheel 23 to rotate in conjunction with each other. When the bevel tooth convoluted wheel 22 rotates counterclockwise, the first clutch block 231 is separated from the second clutch block 223, wherein the number of the first clutch block 231 and the second clutch block 223 are both two, and the The first clutch blocks 231 are respectively on the end face of the straight-toothed rotary wheel 23 symmetrically, and the second clutch blocks 223 are symmetrically distributed on the end face of the said bevel-toothed rotary wheel body 221, so that the bevel-toothed rotary wheel 22 and the straight-toothed rotary wheel 23 linkage for clutch control, more stable and reliable.

Wherein the output shaft of the motor 24 is provided with a bevel gear 27, the bevel gear 27 is meshed with the bevel gear 22, and the motor 24 drives the bevel gear 22 to rotate counterclockwise or clockwise through the bevel gear 27, the structure Simple, precise transmission.

It can be seen from FIG. 4 that the power mechanism 2 also includes a support member 28 for supporting the bevel gyratory wheel 22, and the support 28 abuts against one side of the bevel gyratory wheel 22 to prevent the bevel gyratory wheel from 22 shakes during the transmission process to achieve precise transmission and reduce the friction generated between the support 28 and the bevel slewing wheel 22. The support 28 can be rolled on the casing 21 so that the support 28 and the bevel slewing wheel 22 realize Roll fit.

It can be seen from FIG. 7 that the rotary tripping part 3 includes a tripping part body 31 that is rotatably arranged on the casing 21 and a reset torsion spring 32 that drives it to reset. The end surface of the tripping part body 31 is provided with a rotating shaft 33. The rotating shaft 33 is inserted into the rotating tripping hole 11, and the side of the tripping part body 31 is provided with a driving part 34. When the bevel tooth gyratory wheel 22 is rotating, the tripping part 222 will press the driving part 34. Drive the rotary tripping part 3 to rotate, thereby driving the rotary tripping hole of the circuit breaker body installed side by side to rotate synchronously, so that the circuit breaker body trips, and the reset torsion spring 32 will provide spring force to drive the rotary tripping part 3 reset.

It can be seen from FIG. 8 that in the initial state, the second clutch block 223 of the bevel-toothed rotary wheel 22 is in conflict with the first clutch block 231 of the straight-toothed rotary wheel 23, and at the same time the tripping part 222 of the bevel-toothed rotary wheel 22 Separated from the driving part 34 of the tripping part, when the circuit breaker needs to be closed, the motor 24 will drive the bevel gear 22 to rotate counterclockwise, so that the bevel gear 22 passes through the second clutch block 223 and the first clutch block 231 Cooperate to drive the rotation of the straight-toothed rotary wheel 23, thereby driving the handle 13 to rotate to realize closing. At this time, the second clutch block 223 still conflicts with the first clutch block 231.

After the switch is in place, the motor 24 will drive the bevel gear 22 to rotate clockwise, so that the bevel gear 22 returns to the initial position, while the straight gear 23 does not move. At this time, the second clutch block 223 and the first clutch block 231 phase separation, so that the bevel tooth gyratory wheel 22 and the straight tooth gyratory wheel 23 are freely mated. When the motor 24 will drive the bevel tooth gyratory wheel 22 to continue to rotate clockwise, the tripping part 222 of the bevel tooth gyratory wheel 22 will be It will press the driving part 34 of the tripping part to drive the rotating tripping part 3 to rotate to realize tripping. After tripping, the reset torsion spring 32 will provide spring force to drive the rotating tripping The reclosing operation of the circuit breaker handle 13 will not affect the response time of the normal tripping of the circuit breaker, thereby ensuring the safety of electricity consumption of users.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (5)

1. a kind of breaker body of Multifunctional minitype circuit breaker, including several laid out in parallel and the handle of breaker body The rotation dropout part of the rotation dropout hole linkage of the actuating unit and breaker body of linkage, it is characterized in that：The breaker sheet The housing of body is provided with the cavity for installing various functions module, and the actuating unit includes casing, umbrella tooth rotor, straight-tooth Rotor, the motor for driving the rotation of umbrella tooth rotor and the power transmission shaft linked with the handle of breaker body, the biography Moving axis is provided with the handle spur gear being meshed with straight-tooth rotor；

The umbrella tooth rotor is provided with the dropout portion linked including umbrella tooth rotor body and with rotation dropout part；

The straight-tooth rotor is placed on umbrella tooth rotor body and rotates coaxially；The straight-tooth rotor is respectively equipped with first Clutch block, the umbrella tooth rotor body is provided with the second clutch block being engaged with the first clutch block, when umbrella tooth rotor up time When pin is rotated, first clutch block and the second clutch block mutually link and drive straight-tooth rotor to rotate, when umbrella tooth rotor is inverse When hour hands are rotated, first clutch block and the second clutch block are separated.

2. a kind of Multifunctional minitype circuit breaker according to claim 1, it is characterized in that：The output shaft of the motor is provided with cone Gear, the bevel gear is meshed with umbrella tooth rotor.

3. a kind of Multifunctional minitype circuit breaker according to claim 1 and 2, it is characterized in that：The actuating unit also includes For the support member of support umbrella tooth rotor, the support member is resisted against the one side of the umbrella tooth rotor.

4. a kind of Multifunctional minitype circuit breaker according to claim 1, it is characterized in that：The rotation dropout part includes rotating The de- fastener body being arranged on casing and the reduction torsion spring for ordering about its reset, the end face of de- fastener body are provided with rotary shaft, In the rotary shaft insertion rotation dropout hole, the side of the de- fastener body is provided with drive division, is rotated when the umbrella tooth circles round During dynamic, the dropout portion can press drive division, and the rotation of dropout part is rotated, so as to drive the disconnected of its side position installation arranged side by side The rotation dropout hole synchronous axial system of road device body so that breaker body trips.

5. a kind of Multifunctional minitype circuit breaker according to claim 1, it is characterized in that：First clutch block and second from The quantity for closing block is two, and first clutch block is symmetrical respectively on the end face of straight-tooth rotor, second clutch block It is symmetrically distributed on the end face of the umbrella tooth rotor body.