CN201387858Y

CN201387858Y - Free-trip restoring structure of chopper

Info

Publication number: CN201387858Y
Application number: CN200920137313U
Authority: CN
Inventors: 林华乡
Original assignee: Intex Industries Xiamen Co Ltd
Current assignee: Intex Industries Xiamen Co Ltd
Priority date: 2009-03-25
Filing date: 2009-03-25
Publication date: 2010-01-20
Anticipated expiration: 2019-03-25

Abstract

The utility model discloses a free-trip restoring structure of chopper, which comprises a winding coil which can generate electromagnetic force, an armature iron and an actuating piece, wherein the armature iron is arranged in the winding coil, and generates magnetic fields under the function of electromagnetic force of the winding coil, a static contact on a static contact piece is riveted with a contact pin of a protector into one body, an actuating piece and the armature iron are correspondingly arranged, and are interlocked with a dynamic contact piece, and the dynamic contact piece is driven to move to release or contact the static contact piece under the function of the magnetic fields of the armature iron. The free-trip restoring structure of chopper can effectively achieve the circuit breakage protection function, and has convenient operation and low manufacture cost.

Description

The automatic drop-away reset structure of a kind of circuit breaker

Technical field

The utility model relates to electric equipment, particularly a kind of releasing structure that is applied in the circuit breaker.

Background technology

Circuit breaker (GFCI, Ground-Fault Circuit Interrupter) effect is when breaking down electric leakage, the releasing structure of circuit breaker separates fixed contact with moving contact, and open circuit, preventing that electric current from leaking avoids producing Danger Electric shock risk, releasing structure now is divided into mechanical tripping structure and electromagnetic type releasing structure, and the utility model is a kind of about the electromagnetic type releasing structure.

The utility model content

Main purpose of the present utility model is to provide a kind of circuit breaker automatic drop-away reset structure, and it can effectively realize the open circuit protection effect, and easy to operate, cost of manufacture is low.

In order to reach above-mentioned purpose, solution of the present utility model is:

The automatic drop-away reset structure of a kind of circuit breaker, comprise winding coil, armature and the actuated piece that can produce electromagnetic force, armature is arranged in the winding coil, and produces magnetic field under the electromagnetic force effect of winding coil, and the riveted joint of the contact pin of fixed contact on the static contact and protector is one; The corresponding setting of actuated piece with armature, and with the movable contact spring interlock, under the action of a magnetic field of armature, drive movable contact spring and move and break away from or touch static contact.

Above-mentioned armature is installed in the winding coil.

Above-mentioned actuated piece comprises that one can reach the elastic component that produces compression when inhaling iron plate near armature at the suction iron plate near armature under the effect of armature, and this suction iron plate is fixedlyed connected with movable contact spring.

Above-mentioned elastic component is extension spring.

Above-mentioned extension spring and winding coil axially parallel are provided with, and an end of extension spring fixes, and its movable end is connected with the suction iron plate; When extension spring was in the normal state, movable contact spring separated with static contact, and extension spring is when being in extended state, movable contact spring and static contact adhesive.

Above-mentioned actuated piece comprises that one can reach the shell fragment that produces distortion when inhaling iron plate near armature at the suction iron plate near armature under the effect of armature, and this suction iron plate is fixedlyed connected with movable contact spring.

Above-mentioned shell fragment is arranged on a side of winding coil, and the one end is fixed, and movable end is connected with the suction iron plate; When shell fragment was in the normal state, movable contact spring separated with static contact, and shell fragment is when being in extended state, movable contact spring and static contact adhesive.

After adopting such scheme, the utility model is by being provided with the fit structure of winding coil, armature and actuated piece, when having electric current to flow through in the winding coil, produce electromagnetic force, electromagnetic force is by under the armature effect, drive the actuated piece displacement, thereby make movable contact spring and static contact closure, electricity consumption loop operate as normal; When leakage current took place in the electricity consumption loop, the winding coil no current passed through, and did not have electromagnetic force to produce, this moment, the movable contact spring assembly was replied under the elastic component effect, thereby actuated piece drives movable contact spring away from static contact, and the electricity consumption loop is disconnected, prevent that electric current from leaking, thereby avoid producing Danger Electric shock risk; And after the leakage current fault in electricity consumption loop is got rid of, only needing energized, winding coil is charged once more, can recover the operate as normal in electricity consumption loop.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the utility model first embodiment;

Fig. 2 is the assembled sectional view of the utility model first embodiment;

Fig. 3 is the three-dimensional exploded view of the utility model second embodiment;

Fig. 4 is the assembled sectional view of the utility model second embodiment;

Fig. 5 is the structured flowchart of the control loop that connects of the utility model;

Fig. 6 is the circuit connection diagram of the control loop that connects of the utility model.

Embodiment

Below in conjunction with drawings and the specific embodiments the utility model is elaborated.

To shown in Figure 6, is the structural representation of the automatic drop-away reset structure of a kind of circuit breaker of the utility model as Fig. 1, and it is arranged on loam cake 10 and fastens in the containing cavity that forms with lower cover 20, comprises winding coil 1, armature 2 and actuated piece.

Winding coil 1 can produce electromagnetic force, and it is arranged on the lower cover 20, specifically is to fix a fixed mount 40 on lower cover 20, and these fixed mount 40 1 sides are open, and winding coil 1 just is fastened in this fixed mount 40, and its axle center one side is towards this open sides.

Armature 2 is arranged on that (the cited embodiment of this paper all is fixedly mounted on armature 2 in the winding coil 1 in the blowout patche of winding coil 1, to guarantee that armature 2 can attract actuated piece to produce enough displacements, make movable contact spring 81 touch static contact 82), and an end is exposed to the open sides of winding coil 1, and can produce magnetic field under the effect of winding coil 1 electromagnetic force that produces.

Actuated piece and armature 2 cooperatively interact, can be by adhesive under the action of a magnetic field of armature 2, drive movable contact spring 81 displacements, thus closed or disconnect with static contact 82; In addition; in the utility model, the fixed contact on the static contact 82 and the contact pin of protector are the integrative-structure (not shown) that riveted joint forms, and increase accessory with respect in the existing structure static contact being connected with change-over panel; the utility model can reduce the use of accessory, thereby reduces production costs.

Shown in Figure 5 is the structured flowchart of the control loop that is connected with winding coil 1 in the utility model, and it can make winding coil 1 produce electromagnetic force according to actual conditions for winding coil 1 provides electric current; This control loop comprises power supply 3, current rectifying and wave filtering circuit 4, self-hold circuit 5 and the winding coil 1 that connects successively, and wherein, each circuit all is fixed on the circuit board 30, and is arranged on the top of winding coil 1 in the containing cavity.

Simultaneously with reference to shown in Figure 6, it is a specific implementation circuit structure of control loop, self-hold circuit 5 wherein mainly comprises switch S 1, a PNP triode Q1, a NPN triode Q2 and a controllable silicon Q3, the emitter of PNP triode Q1 is connected to the forward output of current rectifying and wave filtering circuit 4, be connected with a resistance R 1 between the emitter of triode Q1 and the base stage, and collector electrode is via resistance R 2, R4, R6 ground connection; The base stage of triode Q1 also connects the collector electrode of triode Q2 via resistance R 3, and the grounded emitter of triode Q2, and base stage is via resistance R 6 ground connection, herein and use a capacitor C 6 with resistance R 6 and connect; The positive pole of controllable silicon Q3 is connected between resistance R 2 and the R4, minus earth, and the two ends of controllable silicon Q3 also are connected with the two ends of winding coil 1 respectively; And be connected a switch S 1 between the collector electrode of triode Q1 and the emitter,,, change the operating state of self-hold circuit 5 by its break-make of manual control as reset key.

For preventing the generation of leak current fault in the electricity consumption loop works process, the utility model also connects an earth detector 6 in the electricity consumption loop, and be connected to self-hold circuit 5 by electric leakage signal processor 7, by detecting in the control circuit whether leak current fault is arranged, the operating state of control break self-hold circuit 5; Specifically, electric leakage signal processor 7 is connected with the control utmost point of controllable silicon Q3, and utilizes electric leakage signal to drive controllable silicon Q3, changes its operating state, thereby changes the terminal voltage of all the other components and parts in the self-hold circuit 5.

When powering on, switch S 1 disconnects, and triode Q2, Q1 all end at this moment, self-hold circuit 5 is in off-state, and control circuit disconnects, and does not have electric current in the circuit, winding coil 1 can not produce electromagnetic force, and movable contact spring 81 disconnects with static contact 82, and the electricity consumption loop is in off-state; When Closing Switch S1, triode Q2, Q1 conducting, self-hold circuit 5 begins operating in closure state, even switch S 1 disconnection this moment, self-hold circuit 5 also can be kept closure state, thereby make the control circuit conducting, electric current makes winding coil 1 produce electromagnetic force, adhesive armature 2 through winding coil 1, drive movable contact spring 81 and contact conducting electricity consumption loop with static contact 82; Leak electricity as if the electricity consumption loop this moment, earth detector 6 detects leak current fault, sending electric leakage signal by electric leakage signal processor 7 to controllable silicon Q3 drives, impel controllable silicon Q3 conducting, thereby with winding coil 1 short circuit, the electromagnetic force of winding coil 1 disappears, and changes the contact condition of dynamic and

static contact

81,82, effectively protects electricity consumption loop and power consumption equipment; After leak current fault is got rid of, only need press switch S 1, self-hold circuit 5 can automatically reset, thereby changes its operating state, and make that winding coil 1 is charged again and produce electromagnetic force, adhesive armature 2, conducting electricity consumption loop, easy to operate.

With shown in Figure 2, is the preferred embodiment that armature 2 cooperates with actuated piece in the utility model with reference to figure 1, and wherein actuated piece comprises a suction iron plate 92 and an elastic component (adopting extension spring 93 herein); Extension spring 93 is positioned at the top of winding coil 1, and axially parallel setting with winding coil 1, one end of this extension spring 93 is fixed on the opposite side of fixed mount 40 relative open sides, and the other end is a movable end, be connected with suction iron plate 92, during when inhale that iron plate 92 is attracted under the action of a magnetic field of armature 2 and near armature 2, can drive the movable end displacement, thereby extension spring 93 is elongated; Also be fixedly connected with movable contact spring 81 on the suction iron plate 92, and can under the action of a magnetic field of armature 2, drive its synchronous shift and close static contact 82.

When aliving in the winding coil 1, the electromagnetic force that produces makes armature 2 also produce magnetic field, inhale iron plate 92 and under magneticaction, drive movable contact spring 81 near armature 2, extension spring 93 simultaneously stretches, until movable contact spring 81 and static contact 82 closures, with the conducting of electricity consumption loop, extension spring this moment 93 keeps this compressive state; And if during winding coil 1 outage, armature 2 does not have magnetive attraction, and extension spring 93 is not having reinstatement under the situation of pressure, drives to inhale iron plate 92 homings, makes movable contact spring 81 away from static contact 82, as shown in Figure 4, disconnects the electricity consumption loop.

Fig. 3 and shown in Figure 4 be second embodiment of the present utility model, wherein actuated piece comprises and inhales an iron plate 92 and a shell fragment 94; Shell fragment 94 is arranged on a side of winding coil 1, and is positioned at the open sides of fixed mount 40, and the one end is fixed on the fixed mount 40, and the other end is a movable end, is connected with suction iron plate 92, when inhaling iron plate 92 near armature 2, can drive shell fragment 94 and produce distortion; Inhale iron plate 92 and also fixedly connected with movable contact spring 81, and can be near its synchronous shift of drive and near static contact 82 under the effect of armature 2.

When aliving in the winding coil 1, the electromagnetic force of generation makes armature 2 also produce magnetic field, inhales iron plate 92 and drives movable contact spring 81 near armature 2 under magneticaction, and the shell fragment 94 that stretches simultaneously is until movable contact spring 81 and static contact 82 closures, with the conducting of electricity consumption loop; And if during winding coil 1 outage, armature 2 does not have magnetive attraction, and shell fragment 94 is not having reinstatement under the electromagnetic force effect, drives to inhale iron plate 92 homings, makes movable contact spring 81 away from static contact 82, as shown in Figure 6, disconnects the electricity consumption loop.

In sum, the automatic drop-away reset structure of a kind of circuit breaker of the utility model, focus on producing by the electromagnetic force of control winding coil 1, relend and help cooperating of armature 2 and actuated piece, drive movable contact spring 81 near or away from static contact 82, thereby the break-make in control electricity consumption loop prevents the generation of leakage current, thereby avoids producing Danger Electric shock risk.

Claims

1, the automatic drop-away reset structure of a kind of circuit breaker, it is characterized in that: comprise winding coil, armature and the actuated piece that can produce electromagnetic force, armature is arranged in the winding coil, and under the electromagnetic force effect of winding coil, produce magnetic field, and the riveted joint of the contact pin of fixed contact on the static contact and protector is one; The corresponding setting of actuated piece with armature, and with the movable contact spring interlock, under the action of a magnetic field of armature, drive movable contact spring and move and break away from or touch static contact.

2, the automatic drop-away reset structure of a kind of circuit breaker as claimed in claim 1, it is characterized in that: described armature is installed in the winding coil.

3, the automatic drop-away reset structure of a kind of circuit breaker as claimed in claim 1, it is characterized in that: described actuated piece comprises that one can reach the elastic component that produces compression when inhaling iron plate near armature at the suction iron plate near armature under the effect of armature, and this suction iron plate is fixedlyed connected with movable contact spring.

4, the automatic drop-away reset structure of a kind of circuit breaker as claimed in claim 3, it is characterized in that: described elastic component is extension spring.

5, the automatic drop-away reset structure of a kind of circuit breaker as claimed in claim 4 is characterized in that: described extension spring and winding coil axially parallel are provided with, and an end of extension spring fixes, and its movable end is connected with the suction iron plate; When extension spring was in the normal state, movable contact spring separated with static contact, and extension spring is when being in extended state, movable contact spring and static contact adhesive.

6, the automatic drop-away reset structure of a kind of circuit breaker as claimed in claim 1, it is characterized in that: described actuated piece comprises that one can reach the shell fragment that produces distortion when inhaling iron plate near armature at the suction iron plate near armature under the effect of armature, and this suction iron plate is fixedlyed connected with movable contact spring.

7, the automatic drop-away reset structure of a kind of circuit breaker as claimed in claim 6, it is characterized in that: described shell fragment is arranged on a side of winding coil, and the one end is fixed, and movable end is connected with the suction iron plate; When shell fragment was in the normal state, movable contact spring separated with static contact, and shell fragment is when being in extended state, movable contact spring and static contact adhesive.