CN201465937U

CN201465937U - Residual current circuit breaker

Info

Publication number: CN201465937U
Application number: CN2009201211201U
Authority: CN
Inventors: 杨小明
Original assignee: CHAC TECHNOLOGY Co Ltd
Current assignee: CHAC TECHNOLOGY Co Ltd
Priority date: 2009-05-26
Filing date: 2009-05-26
Publication date: 2010-05-12
Anticipated expiration: 2019-05-26

Abstract

The utility model relates to a circuit breaker, in particular to a residual current circuit breaker. The utility model provides the technical scheme that: the residual current circuit breaker comprises a framework, and a circuit breaker part and a leakage detection part, which are arranged inside the framework, wherein a signal transmission source of the leakage detection part is of an electromagnetic device, an iron core on the electromagnetic device is connected with a disengaging mechanism of the leakage detection part in a transmission way, the disengaging mechanism is interlocked and matched with a control handle through the transmission of the iron core to form an open circuit when the circuit breaker has leakage, the electromagnetic device and the iron core are inclined arranged relative to the framework, a locking unit comprises a locking block, one end of the locking block is connected with the iron core, the other end thereof is hinged with a transmission block, and the locking block is provided with an extension block which is vertical to the locking block and is interlocked, contacted and matched with a transmission pin which extends to the interior of a cavity of the leakage detection part along an arc slide groove on a handle interlock piece. By adopting the above technical scheme, the residual current circuit breaker has simple and compact structure and can prevent the slipping.

Description

Residual current circuit breaker

Technical field

The utility model relates to a kind of circuit breaker, particularly a kind of residual current circuit breaker.

Background technology

Residual current circuit breaker mainly partly is made of framework and breaker portion and the detection of electrical leakage be located in the framework, the signal transmission power source of existing detection of electrical leakage part is an electromagnet apparatus, the opening circuit when transmission by iron core of the tripping mechanism driving coupling of the iron core on the electromagnet apparatus and detection of electrical leakage part, tripping mechanism and joystick are linked and constitute circuit breaker and leak electricity.

The parts that tripping mechanism in the existing residual current circuit breaker mostly comprises are too much, install and dismantle extremely inconvenience, and occur the phenomenon of slide fastener easily, can not in time open circuit when causing the circuit breaker electric leakage.

Summary of the invention

At the deficiency that prior art exists, the residual current circuit breaker that the utility model provides is simple in structure, compact, prevent slide fastener.

For achieving the above object, the utility model provides following technical scheme: a kind of residual current circuit breaker, the breaker portion and the detection of electrical leakage that include framework and be located in the framework partly constitute, the signal transmission power source of described detection of electrical leakage part is an electromagnet apparatus, the tripping mechanism driving coupling of iron core on the electromagnet apparatus and detection of electrical leakage part, transmission and the joystick of tripping mechanism by iron core is linked opening circuit when constituting the circuit breaker electric leakage, described tripping mechanism includes drive block and the locking unit with the handle interlock, described drive block includes hinged end, working end and reset terminal, the hinged end at drive block middle part is articulated in drive block on the cavity volume inwall of detection of electrical leakage part by bearing pin, the cavity volume inwall that the working end of drive block sees through the detection of electrical leakage part extends in the cavity volume of breaker portion, and be connected with the STATEMENT OF FEDERALLY SPONSORED of handle, the reset terminal of the drive block spring leaf interior with being arranged in detection of electrical leakage cavity volume partly is to conflict and cooperates, offer arc chute on the cavity volume inwall of described detection of electrical leakage part with the conducting of breaker portion cavity volume, the handle STATEMENT OF FEDERALLY SPONSORED is provided with trundle, trundle extends in the cavity volume of detection of electrical leakage part along arc chute, and link with locking unit, the relative framework of described electromagnet apparatus and iron core thereof is skewed setting, described locking unit includes latch, one end of this latch is connected with iron core, the other end and drive block are hinged, and latch is provided with perpendicular setting, and the extension block of conflicting and cooperating with the trundle interlock in handle STATEMENT OF FEDERALLY SPONSORED upper edge arc chute extends to the cavity volume of detection of electrical leakage part.

Parts of tripping mechanism only are driving member and latch in this, are provided with so not only to install and convenient disassembly; And because parts are few, make that linkage is good, reduced production cost, the fail safe that has improved circuit breaker takes place in the situation that does not have slide fastener; And the relative framework of electromagnet apparatus and iron core thereof is skewed setting, can increase the moment of iron core like this, makes its work more stable.

The utility model further is set to: described latch is curved substantially, the hinged end at the tail end of latch and drive block middle part is common and bearing pin is hinged, described extension block is located at the middle part of latch, the interlock conflict end face of extension block and trundle is an inclined-plane, and the front end of latch is connected with the iron core of electromagnet apparatus.

Latch is simple in structure in this, and conveniently processing, and interlock and connectivity improve relatively, make the circuit breaker internal work more stable.

The utility model further is set to: the front end of described latch is the setting of shift fork shape, offers the ring-type short slot on the side face of the iron core of electromagnet apparatus, and the front end of latch is inserted in the ring-type short slot of iron core, and the formation latch is connected with iron core.

The connected mode compactness of latch and iron core in this, and save material.

Below in conjunction with accompanying drawing the utility model is further described:

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the partial schematic sectional view of the A-A of Fig. 1;

Fig. 3 is the schematic perspective view of latch among the utility model embodiment.

Embodiment

As Fig. 1, Fig. 2, a kind of residual current circuit breaker shown in Figure 3, the breaker portion 2 and the detection of electrical leakage part 3 that include framework and be located in the framework 1 constitute, the signal transmission power source of described detection of electrical leakage part is an electromagnet apparatus 4, the iron core 41 on the electromagnet apparatus 4 and tripping mechanism 5 driving coupling of detection of electrical leakage part 3, transmission and the joystick 21 of tripping mechanism 5 by iron core 41 is linked opening circuit when constituting the circuit breaker electric leakage, described tripping mechanism 5 includes drive block 51 and the locking unit with handle 21 interlocks, described drive block 51 includes hinged end 511, working end 512 and reset terminal 513, the hinged end 511 at drive block 51 middle parts is articulated in drive block 51 on cavity volume 32 inwalls of detection of electrical leakage part 3 by bearing pin 31, cavity volume 32 inwalls that the working end 512 of drive block 51 sees through detection of electrical leakage part 3 extend in the cavity volume 22 of breaker portion 2, and be connected with the STATEMENT OF FEDERALLY SPONSORED of handle 21, spring leaf 33 in the reset terminal 513 of drive block 51 and the cavity volume that is arranged in detection of electrical leakage part 3 32 is to conflict and cooperates, offer arc chute 34 on cavity volume 32 inwalls of described detection of electrical leakage part 3 with 22 conductings of breaker portion 2 cavity volumes, handle 21 STATEMENT OF FEDERALLY SPONSORED are provided with trundle 23, trundle 23 extends in the cavity volume 32 of detection of electrical leakage part 3 along arc chute 34, and link with locking unit, described electromagnet apparatus 4 and iron core 41 relative frameworks 1 thereof are skewed setting, described locking unit includes latch 52, one end of this latch 52 is connected with iron core 41, the other end and drive block 51 are hinged, and latch 52 is provided with and its 52 vertical setting, and the extension block 521 of conflicting and cooperating with trundle 23 interlocks in handle 21 STATEMENT OF FEDERALLY SPONSORED upper edge arc chutes 34 extend to the cavity volume 32 of detection of electrical leakage part 3.The parts of tripping mechanism 5 only are driving member 51 and latch 52, are provided with so not only to install and convenient disassembly; And because parts are few, make that linkage is good, reduced production cost, the fail safe that has improved circuit breaker takes place in the situation that does not have slide fastener; It then is in order to increase the moment of iron core 41, to make its work more stable that electromagnet apparatus 4 and iron core 41 relative frameworks 1 thereof are skewed setting.

In the utility model embodiment, described latch 52 cardinal principles are curved, the hinged end 511 at the tail end of latch 52 and drive block 51 middle parts is common and bearing pin 31 is hinged, described extension block 521 is located at the middle part of latch 52, extension block 521 is an inclined-plane 5211 with the interlock conflict end face of trundle 23, and the front end of latch 52 is connected with the iron core 41 of electromagnet apparatus 4; Latch 52 simple in structure, convenient processing, and interlock and connectivity improve relatively, make the circuit breaker internal work more stable, when the inclined-plane 5211 of trundle 23 and extension block 521 was the conflict shape, when electric leakage (being electric arc) occurring in the cavity volume 32 as if detection of electrical leakage part 3, its iron core 41 just can drive latch 52 after electromagnet apparatus 4 was received signal, inclined-plane 5211 on the extension block 521 at latch 52 middle parts breaks away from trundle 23, constitutes and threads off; The front end of latch 52 is the setting of shift fork shape, offer ring-type short slot 411 on the side face of the iron core 41 of electromagnet apparatus 4, the front end of latch 42 is inserted in the ring-type short slot 411 of iron core 41, formation latch 52 is connected with iron core 41, the connected mode compactness of latch 52 and iron core 41, and save material.

Claims

1. residual current circuit breaker, the breaker portion and the detection of electrical leakage that include framework and be located in the framework partly constitute, the signal transmission power source of described detection of electrical leakage part is an electromagnet apparatus, the tripping mechanism driving coupling of iron core on the electromagnet apparatus and detection of electrical leakage part, transmission and the joystick of tripping mechanism by iron core is linked opening circuit when constituting the circuit breaker electric leakage, described tripping mechanism includes drive block and the locking unit with the handle interlock, described drive block includes hinged end, working end and reset terminal, the hinged end at drive block middle part is articulated in drive block on the cavity volume inwall of detection of electrical leakage part by bearing pin, the cavity volume inwall that the working end of drive block sees through the detection of electrical leakage part extends in the cavity volume of breaker portion, and be connected with the STATEMENT OF FEDERALLY SPONSORED of handle, the reset terminal of the drive block spring leaf interior with being arranged in detection of electrical leakage cavity volume partly is to conflict and cooperates, offer arc chute on the cavity volume inwall of described detection of electrical leakage part with the conducting of breaker portion cavity volume, the handle STATEMENT OF FEDERALLY SPONSORED is provided with trundle, trundle extends in the cavity volume of detection of electrical leakage part along arc chute, and link with locking unit, it is characterized in that: the relative framework of described electromagnet apparatus and iron core thereof is skewed setting, described locking unit includes latch, one end of this latch is connected with iron core, the other end and drive block are hinged, and latch is provided with perpendicular setting, and the extension block of conflicting and cooperating with the trundle interlock in handle STATEMENT OF FEDERALLY SPONSORED upper edge arc chute extends to the cavity volume of detection of electrical leakage part.

2. residual current circuit breaker according to claim 1, it is characterized in that: described latch is curved substantially, the hinged end at the tail end of latch and drive block middle part is common and bearing pin is hinged, described extension block is located at the middle part of latch, the interlock conflict end face of extension block and trundle is an inclined-plane, and the front end of latch is connected with the iron core of electromagnet apparatus.

3. residual current circuit breaker according to claim 2, it is characterized in that: the front end of described latch is the setting of shift fork shape, offer the ring-type short slot on the side face of the iron core of electromagnet apparatus, the front end of latch is inserted in the ring-type short slot of iron core, and the formation latch is connected with iron core.