CN214378280U - Modularized molded case circuit breaker - Google Patents

Abstract

The utility model relates to a modularized molded case circuit breaker, which comprises a base, a middle cover, a surface cover arranged on the middle cover, an operating mechanism and a contact system, wherein the middle cover is provided with an accommodating cavity, the accommodating cavity is provided with an electric leakage tripping module, the electric leakage tripping module comprises a housing, an electric leakage tripping indicating component, a circuit board, a bracket, an electromagnet and a push rod which are arranged in the accommodating cavity, one end of the push rod is clamped on a movable iron core of the electromagnet, and the push rod is in linkage fit with the movable iron core, the leakage tripping indicating component comprises a push plate, a reset spring, an indicating rod and a spring, one end of the indicating rod penetrates through the circuit board and is covered outside the extending surface, and the indicating rod is provided with a locking block, the push rod is provided with a locking hole matched with the locking block, the locking block acts along with the indicating rod and can be buckled in the lock hole, and the limit matching of the push rod and the indicating rod is formed. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly.

Description

Modularized molded case circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to modularization moulded case circuit breaker.

Background

The plastic case circuit breaker is a commonly used protective electric appliance, has the functions of switching on and off load current and protecting overload and short circuit of the load current, and is widely applied to overload and short circuit protection of various power distribution systems and motors. The molded case circuit breaker comprises a base, a middle cover, a surface cover arranged on the middle cover, an electromagnetic tripping mechanism arranged in the middle cover, an operating mechanism, a contact system and an arc extinguishing system.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, the convenient modularization moulded case circuit breaker of assembly.

In order to achieve the above object, the utility model discloses a modular moulded case circuit breaker, including base, well lid, the face lid of setting on covering in, operating device, contact system, well cover and be provided with the holding chamber, this holding intracavity is provided with electric leakage tripping module, electric leakage tripping module including set up in the holding intracavity housing, set up electric leakage tripping indicating assembly on housing one side, set up circuit board on housing, set up the support in the housing, set up on the support and with the electro-magnet of circuit board electricity connection, rotate the setting on the support and with traction lever linkage complex push rod, the one end block of push rod on the movable iron core of electro-magnet, and constitute the linkage complex of push rod and movable iron core, electric leakage tripping indicating assembly including slide set up on housing one side and with operating device's lever linkage complex push pedal, Reset spring, the activity setting between push pedal and housing just with push pedal linkage complex indicator lever, set up the spring between indicator lever and housing, the one end of indicator lever pass the circuit board and extend the face and cover outward, and be provided with the locking block on the indicator lever, the push rod on be provided with locking block matched with lockhole, the locking block along with the indicator lever action and but the lock in the lockhole, and constitute the spacing cooperation of push rod and indicator lever.

The structure has the advantages that the electric leakage tripping indicating assembly is arranged in the housing, so that the electric leakage tripping indicating function of the molded case circuit breaker can be realized, and the safety performance of the molded case circuit breaker can be improved. When the circuit leaks electricity, the movable iron core of the electromagnet moves, the movable iron core drives the push rod to move, the push rod pushes the traction rod, so that the electricity leakage tripping and tripping of the circuit breaker can be realized, the locking block and the push rod are unlocked, the indication rod loses the limitation of the push rod, and the upper end of the indication rod extends out of the face cover, so that the electricity leakage indication function of the plastic case circuit breaker is realized.

Particularly, the indicator lever on be provided with the gag lever post with push pedal matched with, the push pedal on be provided with gag lever post matched with conflict inclined plane, conflict inclined plane move and can conflict on the gag lever post along with the push pedal, and constitute the linkage cooperation of push pedal and indicator lever. The push rod is provided with the abutting inclined plane matched with the indicating rod, so that the indicating rod can be driven reliably by the push rod, and the electric leakage tripping indicating function of the molded case circuit breaker can be realized.

Particularly, the housing is provided with a limiting block, the push plate is provided with a sliding hole matched with the limiting block, and the limiting block is clamped in the sliding hole and forms sliding connection matching of the push plate and the housing. The push plate and the housing are assembled in a clamping matching mode, so that the push plate and the housing are assembled more conveniently, the push plate can be ensured to reliably slide on the housing, and the reliability of the work of the electric leakage tripping assembly is improved.

Particularly, a limiting groove is formed in the push plate corresponding to the lever of the operating mechanism, a rivet matched with the limiting groove is arranged on the lever of the operating mechanism, one end of the rivet penetrates through the limiting groove, and the rivet moves along with the lever and can drive the push plate to move. The rivet matched with the push plate is arranged on the lever, so that the lever can be ensured to reliably drive the push plate to act, and the working reliability of the molded case circuit breaker can be improved.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an exploded view of an embodiment of the present invention.

Fig. 3 is a perspective view of the leakage tripping module according to the embodiment of the present invention.

Fig. 4 is an internal structure diagram of the leakage tripping module according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1-4, an embodiment of the present invention is a modular molded case circuit breaker, including a base 10, a middle cover 11, a face cover 12, an operating mechanism 13, and a contact system disposed on the middle cover 11, the middle cover 11 is provided with a holding chamber 111, a leakage tripping module 20 is disposed in the holding chamber 111, the leakage tripping module 20 includes a housing 21 disposed in the holding chamber 111, a leakage tripping indicating assembly 30 disposed on one side of the housing 21, a circuit board 22 disposed on the housing 21, a bracket 23 disposed in the housing 22, an electromagnet 24 disposed on the bracket 23 and electrically connected to the circuit board 22, and a push rod 25 rotatably disposed on the bracket 23 and in linkage fit with a pull rod 14, one end of the push rod 25 is clamped on a movable iron core 241 of the electromagnet 24, and constitutes linkage fit of the push rod 25 and the movable iron core 241, the leakage tripping indicating assembly 30 includes a lever 131 slidably disposed on one side of the housing 21 and in cooperation with the operating mechanism 13 Linkage complex push pedal 31, reset spring 32, the activity setting between push pedal 31 and housing 21 are in housing 21 and with push pedal 31 linkage complex instruction pole 33, set up the spring 34 between instruction pole 33 and housing 21, the one end of instruction pole 33 pass circuit board 22 and extend outside face lid 12, and be provided with locking block 331 on the instruction pole 33, push rod 25 on be provided with locking block 331 matched with lockhole 251, locking block 331 move and can lock in lockhole 251 along with instruction pole 33, and constitute push rod 25 and instruction pole 33's spacing cooperation.

As shown in fig. 3, the indication rod 33 is provided with a limit rod 332 matched with the push plate 31, the push plate 31 is provided with an abutting inclined surface 311 matched with the limit rod 332, the abutting inclined surface 311 acts along with the push plate 31 and can abut against the limit rod 311, and the push plate 31 and the indication rod 33 are in linkage fit. The push rod is provided with the abutting inclined plane matched with the indicating rod, so that the indicating rod can be driven reliably by the push rod, and the electric leakage tripping indicating function of the molded case circuit breaker can be realized. The cover 21 on be provided with stopper 211, push pedal 31 on be provided with stopper 211 matched with slide hole 312, stopper 211 block in slide hole 312, and constitute the sliding connection cooperation of push pedal 31 and cover 21. The push plate and the housing are assembled in a clamping matching mode, so that the push plate and the housing are assembled more conveniently, the push plate can be ensured to reliably slide on the housing, and the reliability of the work of the electric leakage tripping assembly is improved. A position of the push plate 31 corresponding to the lever 131 of the operating mechanism 13 is provided with a limit groove 313, the lever 13 of the operating mechanism 13 is provided with a rivet 132 matched with the limit groove 313, one end of the rivet 132 is inserted into the limit groove 313, and the rivet 132 moves along with the lever 131 and can drive the push plate 31 to move. The rivet matched with the push plate is arranged on the lever, so that the lever can be ensured to reliably drive the push plate to act, and the working reliability of the molded case circuit breaker can be improved.

The shell is internally provided with the electric leakage tripping indicating assembly, so that the electric leakage tripping indicating function of the molded case circuit breaker can be realized, and the safety performance of the molded case circuit breaker can be improved. When the circuit leaks electricity, the movable iron core of the electromagnet moves, the movable iron core drives the push rod to move, the push rod pushes the traction rod, so that the electricity leakage tripping and tripping of the circuit breaker can be realized, the locking block and the push rod are unlocked, the indication rod loses the limitation of the push rod, and the upper end of the indication rod extends out of the face cover, so that the electricity leakage indication function of the plastic case circuit breaker is realized.

Claims (4)

1. The utility model provides a modularization moulded case circuit breaker, includes base, well lid, sets up face lid, operating device, the contact system of covering in, its characterized in that: the middle cover is provided with a containing cavity, the containing cavity is internally provided with an electric leakage tripping module, the electric leakage tripping module comprises a housing arranged in the containing cavity, an electric leakage tripping indicating component arranged on one side of the housing, a circuit board arranged on the housing, a bracket arranged in the housing, an electromagnet arranged on the bracket and electrically connected with the circuit board, and a push rod rotatably arranged on the bracket and in linkage fit with the traction rod, one end of the push rod is clamped on a movable iron core of the electromagnet and forms linkage fit of the push rod and the movable iron core, the electric leakage tripping indicating component comprises a push plate which is slidably arranged on one side of the housing and in linkage fit with a lever of an operating mechanism, a reset spring arranged between the push plate and the housing, an indicating rod movably arranged in the housing and in linkage fit with the push plate, and a spring arranged between the indicating rod and the housing, the one end of instruction pole pass the circuit board and extend outside the face lid, and be provided with the locking block on the instruction pole, the push rod on be provided with locking block matched with lockhole, the locking block just can the lock in the lockhole along with the action of instruction pole, and constitute the spacing cooperation of push rod and instruction pole.

2. The modular molded case circuit breaker of claim 1, wherein: the utility model discloses a push plate, including the gag lever post, the push plate, the gag lever post on be provided with push plate matched with gag lever post, the push plate on be provided with gag lever post matched with conflict inclined plane, conflict inclined plane along with the push plate action and can conflict on the gag lever post, and constitute the linkage cooperation of push plate and gag lever post.

3. The modular molded case circuit breaker according to claim 1 or 2, characterized in that: the shell on be provided with the stopper, the push pedal on be provided with stopper matched with slide hole, the stopper block in slide the downthehole, and constitute the sliding connection cooperation of push pedal and shell.

4. The modular molded case circuit breaker according to claim 1 or 2, characterized in that: the push plate is provided with a limiting groove corresponding to the lever of the operating mechanism, the lever of the operating mechanism is provided with a rivet matched with the limiting groove, one end of the rivet is inserted in the limiting groove, and the rivet moves along with the lever and can drive the push plate to move.

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