CN2627641Y

CN2627641Y - Fixed contact assembly of AC contactor

Info

Publication number: CN2627641Y
Application number: CN 03261313
Authority: CN
Inventors: 林李杰; 林李东; 林李忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-12
Filing date: 2003-05-12
Publication date: 2004-07-21
Anticipated expiration: 2013-05-12

Abstract

The utility model provides a fixed contact assembly of AC contactor, which comprises a copper contact plate and a silver contact. The silver contact is welded on the top surface of the copper contact plate, and a metal arc-ignition angle is sheathed around the top part of the copper contact plate, with the aperture of the metal arc-ignition angle besieging the silver contact. Due to the metal arc-ignition angle, the electric arc created as the moving contact departs from the static contact is transferred to the metal arc-ignition angle, and the calcine erosion of the static contact by the electric arc is effectively transferred to the metal arc-ignition angle. The rapid transfer of the arc root greatly decreases the temperature rise, reduces the injection of the metal particles, and helps increase the electrical wear performance of the contacts. The copper contact plate is used as a connecting plate of both the static contact and the connector, which saves copper material compared with prior static contact device of connector.

Description

A.C. contactor fixed contact assembly

One, affiliated technical field

The utility model relates to A.C. contactor, refers in particular to a kind of fixed contact assembly that is used for A.C. contactor.

Two, background technology

A.C. contactor mainly partly is made up of electromagnetic system, contact system and arc quenching system, auxiliary contact, support or shell etc.Contact is the execution unit of contactor, closes by their action and closes (disjunction) circuit, and its work quality directly influences the quality of contactor service behaviour.Contact is in breaking course, and moving contact and fixed contact are in "on" position and disengage, and when they begin to separate, and between can produce electric arc when the gap occurring in the gap, and this had not only hindered the disjunction but also can make contact burning reliably in time of circuit.Must take suitably and effective measures with the protection contact system, reduce its wearing and tearing for this reason, improve its make-break capacity, thereby guarantee the safe and reliable of whole contactor.At present, wherein a kind of the most adopted method is to add the short arc sheet on moving contact, and adds magnetic guiding loop on fixed contact, as the contact system of CJ40 Series AC Contactor employing.

Three, summary of the invention

Task of the present utility model is the fixed contact assembly of existing A.C. contactor is improved, and reduces dead time and the temperature rise of electric arc arc root on fixed contact, is beneficial to improve the anti-electric abrasioning performance of contact, and saves copper material.

For finishing above-mentioned task, the solution that the utility model is taked is: a kind of A.C. contactor fixed contact assembly, comprise copper contact plate, silver contact, and on the face of copper contact plate top, weld silver contact, iron arc leading angle cover copper contact plate top, iron arc leading angle opening part is round silver contact.

Owing to be provided with the iron arc leading angle, the electric arc that fixed contact (copper contact plate) produces when separating with moving contact very fast from edge transitions to the iron arc leading angle, so just can very effectively electric arc be transferred on the iron arc leading angle the ablation effect of fixed contact.The quick transfer of arc root has reduced the temperature rise of contact widely, has reduced the injection of contact material metallic, helps improving the anti-electric abrasioning performance of contact; Because the copper contact plate not only as fixed contact but also as the contactor gusset piece, unites two into one, and compares with the static contact head device of former contactor and has saved copper material (in the prior art, fixed contact is installed on the contactor gusset piece).Increase some costs though increased the iron arc leading angle, saved steel, integrated compared with prior art, improved the ratio of performance to price widely.

Four, description of drawings

Fig. 1 is the vertical view of present embodiment.

Fig. 2 is a structure of contact terminal schematic diagram among Fig. 1.

Fig. 3 is the shape schematic diagram of iron arc leading angle among Fig. 1.

Among the figure: 1, contact, 2, the iron arc leading angle, 1-1, silver contact, 1-2, copper contact plate.

Five, embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Referring to Fig. 1～Fig. 3, a kind of A.C. contactor fixed contact assembly comprises copper contact plate 1-2, silver contact 1-1, weldering silver contact 1-1 on the face of copper contact plate 1-2 top, iron arc leading angle 2 cover copper contact plate 1-2 tops, iron arc leading angle 2 opening parts are round silver contact 1-1.

Claims

1, a kind of A.C. contactor fixed contact assembly, comprise copper contact plate (1-2), silver contact (1-1), on the face of copper contact plate (1-2) top, weld silver contact (1-1), it is characterized in that: iron arc leading angle (2) cover copper contact plate (1-2) top, iron arc leading angle (2) opening part is round silver contact (1-1).