CN2544405Y - High-efficient arc-extinction ac contactor - Google Patents
High-efficient arc-extinction ac contactor Download PDFInfo
- Publication number
- CN2544405Y CN2544405Y CN 02233694 CN02233694U CN2544405Y CN 2544405 Y CN2544405 Y CN 2544405Y CN 02233694 CN02233694 CN 02233694 CN 02233694 U CN02233694 U CN 02233694U CN 2544405 Y CN2544405 Y CN 2544405Y
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- contact
- copper
- arc
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- assembly
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Abstract
An efficient arc quenching alternating current contactor comprises an electromagnetism system, a contact system and an arc quenching system, an auxiliary contact, a support and a base. By adopting double break direct drive structure, the utility model is arranged and installed in a upright and solid way. The contact system comprises a traveling contact assembly and a resting contact assembly. The utility model is characterized in that a copper connecting plate is arranged under an iron contact bridge, and silver contacts are welded under the two ends of the copper connecting plate, therefore, a traveling contact assembly is formed; in the resting contact assembly, an iron arc striking horn is arranged on a copper contact plate, silver contacts are welded on the copper contact plate, and the exterior edge of the copper contact plate matches with the exterior edge of the iron arc striking horn. As the contact system design is optimized, the displacement speed of an electric arc foot is accelerated, thus greatly reducing the temperature of the contact and deceasing the ejection of contact material metallics, thus the abrasion of the contact is reduced. The utility model not only exerts simple improvement on the contact system without remodeling any component of an original CJ20 alternating current contact, but also achieves the aim of efficient arc quenching.
Description
Affiliated technical field
The utility model relates to the A.C. contactor in the low-voltage electrical apparatus field, refers in particular to a kind of efficient arc extinguishing ac contactor.
Background technology
At present, the domestic CJ20 A.C. contactor that has a large capacity and a wide range, adopt double break point direct dynamic structure, formal dress is three-dimensional to be arranged, compact conformation, but exist weak point at the contact system design aspect: the one, processed complex, the 2nd, contact is when disjunction, utilize the electromagnetic force of current circuit that electric arc is produced the magnetic blow-out effect, moving contact is in the circuit pathways and forms ring-type, and the electromagnetic force that produces when contact closure flicks moving contact, causes contact melting welding easily, reduce the useful life of contactor, the 3rd, arc extinction performance is poor.The applicant once designed a kind of " the quick arc extinguishing ac contactor of modified model " (ZL99243449), it is that contact system to the CJ10 A.C. contactor redesigns to improve and forms, mainly be that former fixed contact is changed into Z-shaped copper fixed contact, the irony arcing born is arranged on every side, reached the purpose of quick arc extinguishing, but this scheme is not suitable for the improvement to the CJ20 A.C. contactor.
Summary of the invention
The purpose of this utility model is existing CJ20 A.C. contactor had both been kept the characteristics of original structure compactness, overcomes the shortcoming of above-mentioned existence again, and a kind of efficient arc extinguishing ac contactor is provided.
For achieving the above object, the solution that the utility model is taked is: a kind of efficient arc extinguishing ac contactor, comprise electromagnetic system, contact system and arc quenching system, auxiliary contact, support and base, adopt double break point direct dynamic structure, formal dress is three-dimensional arranges that contact system comprises moving contact component, fixed contact assembly, and it is characterized in that has a copper gusset piece under the irony contact bridge, copper gusset piece welds silver contact below the two ends, constitutes described moving contact component; In the fixed contact assembly, an irony arc leading angle is placed on the copper contact plate, welds silver contact on the copper contact plate, and copper contact plate outer and irony arc leading angle outer match.
Compared with prior art, have the following advantages: (1) silver contact is welded under the copper gusset piece, has reduced resistance value.(2) because copper contact plate outer and irony arc leading angle outer match, formed strong magnetic blow-out loop; When the contact disjunction, contact and irony arc leading angle produce magnetic blow-out magnetic field, and this magnetic blow-out magnetic field makes the electric arc outwards motion apace that has just generated; When electric arc leaves contact when the irony arc leading angle, electric current strengthens the effect of magnetic blow-out further by loop, quickens the quick transfer of arc root; The quick transfer of arc root reduces the temperature of contact widely, reduces the injection of contact material metallic, thereby has reduced the wearing and tearing of contact.(3) under the constant situation of other spare and accessory parts of CJ20 A.C. contactor, only contact system is done simple improvement, just reached the purpose of efficient arc extinguishing.
Description of drawings
Fig. 1 is a present embodiment contact system structural representation.
Fig. 2 is the vertical view of irony arc leading angle, copper contact plate, silver contact conjunction in the fixed contact assembly among Fig. 1.
Fig. 3 is an irony arc leading angle schematic perspective view in the fixed contact assembly.
Among the figure: 1, moving contact component, 2, the fixed contact assembly, 1-1, irony contact bridge, 1-2, copper gusset piece, 1-3, silver contact, 2-1, irony arc leading angle, 2-2, copper contact plate, 2-3, silver contact.
Embodiment
As described in Figure 1, a kind of efficient arc extinguishing ac contactor, comprise electromagnetic system, contact system and arc quenching system, auxiliary contact, support and base, adopt double break point direct dynamic structure, formal dress is three-dimensional arranges that contact system comprises moving contact component 1, fixed contact assembly 2, and it is characterized in that has a copper gusset piece 1-2 under the irony contact bridge 1-1, welding silver contact 1-3 constitutes described moving contact component 1 below the copper gusset piece 1-2 two ends; In fixed contact assembly 2, an irony arc leading angle 2-1 is placed on the copper contact plate 2-2, and copper contact plate 2-2 goes up welding silver contact 2-3, and copper contact plate 2-2 outer and irony arc leading angle 2-1 outer match (as shown in Figure 2).
As described in Figure 3, copper contact plate 2-2 is a prong shape, on have louvre, have down installing hole.
Claims (2)
1, a kind of efficient arc extinguishing ac contactor, comprise electromagnetic system, contact system and arc quenching system, auxiliary contact, support and base, adopt double break point direct dynamic structure, formal dress is three-dimensional to be arranged, contact system comprises moving contact component (1), fixed contact assembly (2), it is characterized in that: a copper gusset piece (1-2) is arranged under the irony contact bridge (1-1), and copper gusset piece (1-2) welds silver contact (1-3) below the two ends, constitutes described moving contact component (1); In fixed contact assembly (2), an irony arc leading angle (2-1) is placed on the copper contact plate (2-2), and copper contact plate (2-2) is gone up welding silver contact (2-3), and copper contact plate (2-2) outer and irony arc leading angle (2-1) outer match.
2, a kind of efficient arc extinguishing ac contactor according to claim 1 is characterized in that: copper contact plate (2-2) is a prong shape, on have louvre, have down installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233694 CN2544405Y (en) | 2002-05-19 | 2002-05-19 | High-efficient arc-extinction ac contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233694 CN2544405Y (en) | 2002-05-19 | 2002-05-19 | High-efficient arc-extinction ac contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2544405Y true CN2544405Y (en) | 2003-04-09 |
Family
ID=33708758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02233694 Expired - Fee Related CN2544405Y (en) | 2002-05-19 | 2002-05-19 | High-efficient arc-extinction ac contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2544405Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575962C (en) * | 2007-09-07 | 2009-12-30 | 西安交通大学 | A kind of electric arc arc root current density distribution test method and device |
| CN101976636A (en) * | 2010-11-24 | 2011-02-16 | 沈阳工业大学 | Contact system of contactor |
-
2002
- 2002-05-19 CN CN 02233694 patent/CN2544405Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575962C (en) * | 2007-09-07 | 2009-12-30 | 西安交通大学 | A kind of electric arc arc root current density distribution test method and device |
| CN101976636A (en) * | 2010-11-24 | 2011-02-16 | 沈阳工业大学 | Contact system of contactor |
| CN101976636B (en) * | 2010-11-24 | 2013-01-02 | 沈阳工业大学 | Contact system of contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |