CN200993939Y

CN200993939Y - Magnetic flux converter device for plastic casing circuit breaker

Info

Publication number: CN200993939Y
Application number: CN 200620151682
Authority: CN
Inventors: 梁燕; 高云旭; 陈惠娴; 宋秀荣; 黎明; 韩婧娴
Original assignee: TIANJIN BENEFO TEJING ELECTRIC CO Ltd
Current assignee: TIANJIN BENEFO TEJING ELECTRIC CO Ltd
Priority date: 2006-12-14
Filing date: 2006-12-14
Publication date: 2007-12-19
Anticipated expiration: 2016-12-14

Abstract

The utility model relates to a magnetic flux converter of a plastic casing type breaker, which comprises a magnetic flux converter, and two back plates with a round orifice, which are fixedly connected with the surface of the magnetic flux converter casing. A push plate is fixedly connected with a section of a magnetic flux converter iron core, which extends out of the casing. A guide bar, onto which a press plate is fixed, is arranged into the round orifice of the two back plates. A spring is positioned between the press plate on the guide bar and the back plate. The free end of the push plate is positioned at the moving track of the guide bar in the round orifice of the two back plates. The both ends of an actuating coil of the magnetic flux converter are threaded out from the casing of the magnetic flux converter, and one end is connected with a current conducting plate, which is fixed to the casing for fastening the a fixed contact. While the other end is connected with a current conducting plate, which is fixed to the guide bar and is provided with a moving contact. A node control that protects the magnetic flux converter is arranged on the outside of the magnetic flux converter casing by the utility model, and the switching state of the node switch can be directly observed from the outside. Therefore, the volume of the magnetic flux converter is reduced and the reliability of the operation is heightened as well.

Description

The magnetic flow convertor device of moulded case circuit breaker

Affiliated technical field

The utility model belongs to a kind of circuit breaker, particularly relates to a kind of magnetic flow convertor device of moulded case circuit breaker.

Background technology

Along with reducing of moulded case circuit breaker volume; the volume of magnetic flow convertor also reduces thereupon; node at present known protection magnetic flow convertor uses a sensitive switch; be installed in the magnetic flow convertor housing; deciliter realizing of sensitive switch by the push rod in the magnetic flow convertor; its deciliter state is invisible in the outside of magnetic flow convertor; judge that it closes branch and needs to after the long-time energising of magnetic flow convertor; according to magnetic flow convertor whether by scaling loss; know that node has and do not have closure, very inconvenient, poor reliability; be mounted in the housing of magnetic flow convertor owing to sensitive switch in addition, so the volume of magnetic flow convertor is also bigger.

Summary of the invention

The utility model provides for solving the technical problem that exists in the known technology that a kind of volume is little, the node switch of the judging the protection magnetic flow convertor closed magnetic flow convertor device of moulded case circuit breaker eaily whether.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: it includes magnetic flow convertor, is fixed with the fixed heads of two band circular holes at the outer surface of magnetic flow convertor housing; The head that stretches out magnetic flow convertor housing exterior portion at described magnetic flow convertor iron core is fixed with a push pedal, in described two fixed head circular holes, be installed with a guide rod, on described guide rod, be fixed with a pressing plate, and be with a spring between the pressing plate on the described guide rod and a fixed head, described push pedal is not attached to a end on the iron core and is in described guide rod and prolongs center line in the circular hole of two fixed heads on the movement locus when mobile; The two ends of described magnetic flow convertor actuation coil are by passing in the magnetic flow convertor housing, and respectively an end be fixed on the magnetic flow convertor housing on fixedly the conductive plate of fixed contact link to each other, the other end links to each other with the conductive plate that described guide rod is fixed with moving contact.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology can also be: it includes magnetic flow convertor and magnetic flow convertor pedestal, described magnetic flow convertor fixture is in described magnetic flow convertor pedestal, described magnetic flow convertor pedestal is a box body shape pedestal, a lateral box wall inner face that parallels with the movement locus of magnetic flow convertor iron core on the box body shape base body of described magnetic flow convertor is vertical to be fixed with the fixed head of band U type gap, exposes at the box body shape base body of described magnetic flow convertor that fixed head one end near band U type gap has a circular hole on this another lateral box wall unshakable in one's determination; Head at described magnetic flow convertor extension unshakable in one's determination is fixed with a push pedal; In the U type gap of the fixed head of described band U type gap and the circular hole on described another lateral box wall of box body shape base body, be installed with a guide rod, on described guide rod, be fixed with a pressing plate, between the fixed head of being with U type gap on the described guide rod and pressing plate, be with a spring; Described push pedal be not attached to a end on the iron core, be in described guide rod and prolong its center line and survey in the circular hole on box wall on the movement locus when mobile at the gap of described band U type gap fixed head and another; The two ends of described magnetic flow convertor actuation coil by the magnetic flow convertor housing by passing in the described magnetic flow convertor pedestal, and respectively an end be fixed on the magnetic flow convertor base body on fixedly the conductive plate of fixed contact link to each other, the conductive plate of the moving contact that is connected on the other end and the described guide rod free end links to each other; In described magnetic flow convertor pedestal, be equipped with and have the hole that to see dynamic and static contact deciliter on the sidewall of described guide rod one side.

Advantage and the good effect that the utlity model has are: owing to adopted the node switch that will protect magnetic flow convertor to be arranged on the outside of magnetic flow convertor housing; we are deciliter state from visual observation to protection magnetic flow convertor node switch directly; the volume that has also dwindled magnetic flow convertor is little, and has improved the reliability of magnetic flow convertor work.

Description of drawings

Fig. 1 is one of structural representation of the present utility model;

Fig. 2 is two of structure of the present utility model and a partial schematic sectional view.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1, be fixed with the

fixed head

6 and 9 of two band circular holes at the outer surface of magnetic flow convertor 1 housing; The head that stretches out housing parts at magnetic flow convertor 1 iron core 12 is installed with a push pedal 11, is installed with a guide rod 10 in the circular hole of

fixed head

6 and 9, is installed with a pressing plate 8 on guide rod 10; Guide rod 10 is with spring 7 between fixed head 6 and pressing plate 8; The two ends of the actuation coil of magnetic flow convertor 1 are by passing in magnetic flow convertor 1 housing, and respectively an end be fixed on magnetic flow convertor 1 housing on quiet conductive plate 4 on fixed contact 3 link to each other, the moving contact 2 on the other end and the guide rod 10 on the hard-wired moving conductive plate 5 links to each other.

As shown in Figure 2, the front side wall inner surface at magnetic flow convertor box body shape base body 13 is fixed with the fixed head 6 of the band U type gap that sidewall is vertical therewith and near fixed head 6 one sides one circular hole 9 is arranged on the left side sidewall of magnetic flow convertor box body shape base body 13; The head that stretches out housing parts at magnetic flow convertor 1 iron core 12 is installed with a push pedal 11, is installed with a pressing plate 8 on guide rod 10; Guide rod 10 passes the circular hole 9 on the left side sidewall of the U type gap of fixed head 6 and magnetic flow convertor box body shape base body 13, and is with spring 7 between guide rod 10 upper mounted plates 6 and pressing plate 8; The housing of the two ends of the actuation coil of magnetic flow convertor 1 by magnetic flow convertor 1 is by passing in the magnetic flow convertor base body 13, and respectively an end be fixed on magnetic flow convertor base body 13 on fixedly the conductive plate 4 of fixed contact 3 link to each other, the moving conductive plate of installing on the other end and the guide rod 10 5 that is fixed with moving contact 2 links to each other.In addition,, close at dynamic and

static contact

2,3, have a square hole in the branch scope of activities near on the sidewalls of dynamic and

static contact

2,3 one sides at magnetic flow convertor base body 13.

Its course of work is: when magnetic flow convertor 1 is resetted by reset of breaker mechanism, the push pedal 11 promotion guide rods 10 that are fixed on unshakable in one's determination 12 also just make moving contact 2 and fixed contact 3 closures simultaneously, coil in the magnetic flow convertor 1 is switched on, and the spring 7 that is enclosed within this moment on the guide rod 10 is compressed by the pressing plate on the guide rod 10 8.When intelligent release is sampled, calculated circuit, when judging circuit and need disconnect, give 1 one electric currents of magnetic flow convertor, this trigger current enters the coil in the magnetic flow convertor 1, the electromagnetic force that coil induces in iron core and spring force be superposition mutually, when being enough to overcome magnet to unshakable in one's determination 12 suction, unshakable in one's determination 12 eject, spring 7 returns to free position, with moving contact 2 pull-ups, separate with fixed contact 3, when preventing that magnetic flow convertor 1 has been shown in an open position, circuit breaker is disjunction not, makes the long-term energising of magnetic flow convertor 1 and is taken place by the problem of scaling loss.

Claims

1. the magnetic flow convertor device of a moulded case circuit breaker, it includes magnetic flow convertor, it is characterized in that: the fixed heads that are fixed with two band circular holes at the outer surface of magnetic flow convertor housing; The head that stretches out magnetic flow convertor housing exterior portion at described magnetic flow convertor iron core is fixed with a push pedal, in described two fixed head circular holes, be installed with a guide rod, on described guide rod, be fixed with a pressing plate, and be with a spring between the pressing plate on the described guide rod and a fixed head, described push pedal is not attached to a end on the iron core and is in described guide rod and prolongs center line in the circular hole of two fixed heads on the movement locus when mobile; The two ends of described magnetic flow convertor actuation coil are by passing in the magnetic flow convertor housing, and respectively an end be fixed on the magnetic flow convertor housing on fixedly the conductive plate of fixed contact link to each other, the other end links to each other with the conductive plate that described guide rod is fixed with moving contact.

2. the magnetic flow convertor device of a moulded case circuit breaker, it includes magnetic flow convertor and magnetic flow convertor pedestal, described magnetic flow convertor fixture is in described magnetic flow convertor pedestal, it is characterized in that: described magnetic flow convertor pedestal is a box body shape pedestal, a lateral box wall inner face that parallels with the movement locus of magnetic flow convertor iron core on the box body shape base body of described magnetic flow convertor is vertical to be fixed with the fixed head of band U type gap, exposes at the box body shape base body of described magnetic flow convertor that fixed head one end near band U type gap has a circular hole on another lateral box wall unshakable in one's determination; Head at described magnetic flow convertor extension unshakable in one's determination is fixed with a push pedal; In the U type gap of the fixed head of described band U type gap and the circular hole on described another lateral box wall of box body shape base body, be installed with a guide rod, on described guide rod, be fixed with a pressing plate, between the fixed head of being with U type gap on the described guide rod and pressing plate, be with a spring; Described push pedal be not attached to a end on the iron core, be in described guide rod and prolong its center line and survey in the circular hole on box wall on the movement locus when mobile at the gap of described band U type gap fixed head and another; The two ends of described magnetic flow convertor actuation coil by the magnetic flow convertor housing by passing in the described magnetic flow convertor pedestal, and respectively an end be fixed on the magnetic flow convertor base body on fixedly the conductive plate of fixed contact link to each other, the conductive plate of the moving contact that is connected on the other end and the described guide rod free end links to each other; In described magnetic flow convertor pedestal, be equipped with and have the hole that to see dynamic and static contact deciliter on the sidewall of described guide rod one side.