CN2231449Y

CN2231449Y - Electromagnetic tripping device for circuit breaker

Info

Publication number: CN2231449Y
Application number: CN 95244415
Authority: CN
Inventors: 顾文华
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-21
Filing date: 1995-07-21
Publication date: 1996-07-17
Anticipated expiration: 2005-07-21

Abstract

The utility model relates to an electromagnetic tripping device for a circuit breaker, which is characterized in that the utility model is composed of a static iron core (7) fixed in the inner cavity of a winding (8), a moving iron core (4) arranged at the upper part of the static iron core (7), a reaction spring (6) arranged between the moving iron core (4) and the static iron core (7), and a regulating nut (3) arranged at the upper part of the iron core (4) and connected by threads on asupport frame (9). A strike rod (2) is fixed and connected with the moving iron core (4) and is penetrated through the center of the regulating nut (3), the reaction spring (6) and the static iron core (7). The action current of the utility model is convenient for rectifying, flexible action can be realized after rectifying, and the utility model can be used on various breakers.

Description

The electromagnetic tripping apparatus of circuit breaker

The utility model relates to a kind of circuit breaker.

In the prior art, the magnetictrip of breaker of plastic casing is dispatching from the factory when adjusting, and the curved release bracket of armrest pincers is regulated the gap between moving iron core of magnetictrip and the static iron core, with its electric current operating value of adjusting in the past.This mechanical deformation is along with the time duration meeting recovers, so the performance of product is insecure, also is unsettled.

The purpose of this utility model is to provide a kind of electromagnetic tripping apparatus that can keep stable circuit breaker at its electromagnetism operating value of back of once adjusting.

The technical solution of the utility model is: it comprises the static iron core that is fixed in the coil inner chamber, at the moving iron core above the static iron core, be arranged at reaction spring between moving iron core and the static iron core, being positioned at of being threaded with support moved the adjusting nut above the iron core, lance and moving iron core be fixedly connected and lance through the central authorities of adjusting nut, reaction spring, static iron core.

The utility model compared with prior art has following advantage:

(1). regulate distance between moving iron core and the static iron core with adjusting nut since between adjusting nut and the support by being threaded, so the knee-action scope of adjusting nut is big, can enlarge the actuating range of release.

(2). the operating current value of can adjusting in the outside of release, making adjusts becomes flexible.Particularly magnetictrip has independence, can be used as parts and adjusts in circuit breaker external mounting and operating current separately, moves as long as move iron core when adjusting.And the magnetictrip of existing circuit breaker will be adjusted with circuit breaker integral body, and the big electric current when adjusting is often singed the main contact of circuit breaker.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is a structure cutaway view of the present utility model;

Breaker structure figure when accompanying drawing 2 is assemblied in the circuit breaker for the utility model; Wherein:

[1]. re-pack; [2]. lance; [3]. adjusting nut; [4]. moving iron core; [5]. armature; [6]. reaction spring; [7]. static iron core; [8]. coil; [9]. support; [10]. the dropout crossbeam.

Embodiment: referring to accompanying drawing 1 and accompanying drawing 2, the utility model comprises the static iron core [7] that is fixed in coil [8] inner chamber, be positioned at the moving iron core [4] of static iron core [7] top, be arranged at reaction spring [6] between moving iron core [4] and the static iron core [7], be threaded with support [9] be positioned at adjusting nut [3] above the moving iron core [4], lance [2] and moving iron core [4] be fixedly connected and lance [2] through the central authorities of adjusting nut [3], reaction spring [6], static iron core [7].Static iron core [7] produced suction as electromagnet to moving iron core [4] after coil [8] alived, behind the elastic force that overcomes reaction spring [6], moving iron core [4] drives lance [2] and moves downward, so can regulate distance between moving iron core [4] and the static iron core [7] by adjusting nut [3], reach the purpose of the operating current of adjusting.Described lance [2] is positioned at adjusting nut [3] upper fixed and re-packs [1], and this re-pack [1] is positioned at the top of dropout crossbeam [10].When the downward bump of lance [2] touched bridge, re-pack [1] also touched dropout crossbeam [10] downwards, made dropout crossbeam [10] trigger trip gear and made the fixed contact and the moving contact that touch on the bridge throw off.The outside of described coil [8] fixes with the support [9] in the outside with armature [5] parcel, described armature [5].This armature [5] has constituted magnetic loop with lance [2], because the clearance constant in this loop, magnetic resistance is little, so the operating current of magnetictrip can be constant, and the action sensitivity height of product.The lower end part of described lance [2] touches the top of bridge in circuit breaker.When release moved, the bottom of lance [2] can be opened and be touched bridge and make circuit breaker action.Described reaction spring [6] is positioned at the gap between static iron core [7] and the lance [2].When the elastic force that overcomes reaction spring [6] at moving iron core [4] moves downward, can be compressed to reaction spring [6] in the gap between static iron core [7] and the lance [2].The top of described adjusting nut [3] is exposed to support [9].Can directly turn adjusting nut [3] to regulate setting current.

Claims

1. the electromagnetic tripping apparatus of a circuit breaker, it is characterized in that: it comprises the static iron core [7] that is fixed in coil [8] inner chamber, be positioned at the moving iron core [4] of static iron core [7] top, be arranged at reaction spring [6] between moving iron core [4] and the static iron core [7], be threaded with support [9] be positioned at adjusting nut [3] above the moving iron core [4], hit that dried [2] and moving iron core [4] are fixedly connected and lance [2] through the central authorities of adjusting nut [3], reaction spring [6], static iron core [7].

2. the electromagnetic tripping apparatus of circuit breaker according to claim 1, it is characterized in that: described lance is fixed with re-pack [1] on [2], and this re-pack [1] is positioned at the top of dropout crossbeam [10].

3. the electromagnetic tripping apparatus of circuit breaker according to claim 1 is characterized in that: the outside of described coil [8] fixes with the support [9] in the outside with armature [5] parcel, described armature [5].

4. the electromagnetic tripping apparatus of circuit breaker according to claim 1, it is characterized in that: the lower end part of described lance [2] touches the top of bridge in circuit breaker.

5. the electromagnetic tripping apparatus of circuit breaker according to claim 1, it is characterized in that: described reaction spring [6] is positioned at the gap between static iron core [7] and the lance [2].

6. the electromagnetic tripping apparatus of circuit breaker according to claim 1, it is characterized in that: the top of described adjusting nut [3] is exposed to support [9].