CN201440398U - Expansion large-capacity contactor - Google Patents
Expansion large-capacity contactor Download PDFInfo
- Publication number
- CN201440398U CN201440398U CN2009201528620U CN200920152862U CN201440398U CN 201440398 U CN201440398 U CN 201440398U CN 2009201528620 U CN2009201528620 U CN 2009201528620U CN 200920152862 U CN200920152862 U CN 200920152862U CN 201440398 U CN201440398 U CN 201440398U
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- China
- Prior art keywords
- arc
- contact
- bridge
- conductive board
- contactor
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- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an expansion large-capacity contactor which is expanded from a CJ20 contactor; an arc extinguish system consists of an arc extinguish chamber, a magnet conductive board, arc chutes and a short arc; positions corresponding to a dynamic contact and a static contact in an arc extinguish cover are provided with a set of arc chutes which are lined in an arc shape to form the arc extinguish chamber; the magnet conductive board is arranged on the static contact, and the outer edges thereof are matched; the arc chutes and the short arc are arranged below the middle top of the arc extinguish cover; and the dynamic contact component is in a bridge shape and comprises the dynamic contact, a connecting plate and a contact bridge. The expansion large-capacity contactor keeps the characteristic of compact structure of CJ20 model, improves the prior higher current from 620A to 1250A or above through expansion, and has the advantages of small size, light weight, large capacity and the like.
Description
Technical field
The utility model relates to the A.C. contactor in the low-voltage electrical apparatus field, refers in particular to the big capacity contactor of expanding type.
Background technology
The CJ20 A.C. contactor that present domestic use has a large capacity and a wide range, its design feature is to take double break point direct dynamic structure, and formal dress is three-dimensional to be arranged, (see " low-voltage electrical apparatus is selected servicing manual for use "/Zheng Mingfang chief editor, ten thousand continue waits revision, 2 editions to compact conformation especially, Beijing, China Machine Press, 1995).But also there are some defectives: the one, potter's clay grid sheet arc extinguishing, the spray arc distance when using, often will be deepened cabinet from excessive in the complete sets of equipment, though arc extinction performance is improved largely than the contactor of other old type, flashover distance is dwindled in present complete industry strong request; The 2nd, the greatest level electric current of design is 630A, if when surpassing the 630A electric current, main contact is subjected to wearing and tearing occurring after heating, overload, the melting welding, reduces the useful life of contactor.
The utility model content
The purpose of this utility model is existing C J20 A.C. contactor is improved, and has both kept the characteristics of CJ20 type compact conformation, overcomes the defective of above-mentioned existence again, provides a kind of expanding type big capacity contactor, and its greatest level electric current equals or exceeds 1250A.
For achieving the above object, the solution that the utility model is taked is: the big capacity contactor of a kind of expanding type, by electromagnetic system, contact and arc quenching system, support and base etc. are partly formed, formal dress is three-dimensional to be arranged, adopt double break point direct dynamic structure, comprise arc control device in described contact and the arc quenching system, magnetic conductive board, arc-chute and short arc sheet, in arc-extinguish chamber, be provided with the arc extinguishing grid pieces formation arc control device that one group of arc shooting forms with moving contact and the corresponding position of fixed contact, magnetic conductive board is placed on the fixed contact, the outer of fixed contact outer and magnetic conductive board matches, below the middle top of arc-extinguish chamber, put arc-chute, the short arc sheet is drawn at the angle on the two ends, the arc-chute left and right sides, moving contact component in described contact and the arc quenching system is a bridge shape, by contact, joint cover and irony are touched bridge and are formed.
Have only arc control device in the arc quenching system of CJ20 A.C. contactor, its arc control device are potter's clay grid sheets.In the utility model, because fixed contact outer and magnetic conductive board outer match, and the tracks of electric arc arc root almost is in same plane, can make arc root on the fixed contact like this under the effect of arc current self-excitation magnetic field and magnetic conductive board, can be successfully from the edge transitions of fixed contact to magnetic conductive board; The arc root also can skip to irony during to root at arc motion and touches on the bridge and be transferred to the short arc sheet very soon on the moving contact, forces electric arc to enter in the arc control device that arc extinguishing grid pieces forms and is cut apart and extinguish, and has shortened the quenching time.And the quick transfer of arc root has reduced the temperature rise of contact widely, has reduced the injection of the electric arc of contact material, helps improving the arc extinction performance of anti-electrical wear of contact.Therefore, under the constant situation of other spare and accessory parts of CJ20 A.C. contactor, its contact and arc quenching system have been done above-mentioned improvement, just can make the greatest level electric current bring up to 1250A or more than, reached the purpose of joint silver.
Description of drawings
Fig. 1 is the structural representation of present embodiment;
Fig. 2 is Fig. 1 moving contact component (10) front view;
Fig. 3 is fixed contact among Fig. 1 (14) and the mutual front view that disposes of magnetic conductive board (12);
Fig. 4 is the vertical view of Fig. 3.
As shown in Figure 1, base (1), base plate (2) are in order to install the electromagnetic system that coil (18), armature (16), yoke (17) etc. constitute, and electromagnetic system is with the switching campaign of the dynamic and static contact mechanism of compositions such as control fixed contact terminal block (15), support (3); Be provided with the arc-extinguish chamber (4) of dynamic/static contact mechanism on base plate (2), the upper surface both sides of support (3) are provided with moving contact component (10), and fixed contact terminal block (15) is provided with and the corresponding fixed contact of moving contact component (10) (14).The main composition of prior art has below roughly been described.
Embodiment:
Below in conjunction with embodiment and accompanying drawing thereof the utility model is explained in detail again.
As shown in Figure 1, be provided with arc extinguishing grid pieces (11) the formation arc control device that one group of arc shooting forms with moving contact component (10) by contact (8a, 8b be copper touch bridge (5) irony touch bridge (6) forms) and the corresponding position of fixed contact (14) in the arc-extinguish chamber (4); Magnetic conductive board (12) is placed on the fixed contact (14), the outer of fixed contact (14) outer and magnetic conductive board (12) matches, as shown in Figure 3, Figure 4, magnetic conductive board (12) is an irony, and screw (13) is fixed on the fixed contact terminal block (15) with fixed contact (14) following of magnetic conductive board (12); Put arc-chute (7) below the middle top of arc-extinguish chamber (4), short arc sheet (9) is drawn at the angle on arc-chute (7) two ends, the left and right sides, and arc-chute (7) can be made an integral body with short arc sheet (9); Moving contact component (10) bridge shape is made up of moving contact (8), joint cover (5) and contact bridge (6).
Above-mentioned design is shortened the quenching time as much as possible; and electric arc is transferred to protection on every side to the ablation effect major part of contact use on the irony magnetic conductive board (12); again owing to be provided with arc-chute (7) and short arc sheet (9); dwindled flashover distance again; and electric arc is introduced arc control device efficiently carry out arc extinguishing; suppress the injection everywhere of electric arc and the release of energy thereof effectively, reduced the damage that electric arc brings.Since the spray arc distance from dwindle significantly, improved the life-span of contact and respective members.
Claims (5)
1. big capacity contactor of expanding type, by electromagnetic system, contact and arc quenching system, part such as support (3) and base (1) is formed, formal dress is three-dimensional to be arranged, adopt double break point direct dynamic structure, it is characterized in that: comprise arc control device in contact and the arc quenching system, magnetic conductive board (12), arc-chute (7) and short arc sheet (9), in arc-extinguish chamber (4), be provided with arc extinguishing grid pieces (11) the composition arc control device that one group of arc shooting forms with moving contact component (10) and the corresponding position of fixed contact (14), magnetic conductive board (12) is placed on the fixed contact (14), the outer of fixed contact (14) outer and magnetic conductive board (12) matches, put arc-chute (7) below the middle top of arc-extinguish chamber (4), short arc sheet (9) is drawn at the angle on arc-chute (7) two ends, the left and right sides; Moving contact component (10) is touched bridge (6) and is formed by contact (8a, 8b) copper bridge (5) and irony touched for bridge shape.
2. the big capacity contactor of a kind of expanding type according to claim 1 is characterized in that: screw (13) is fixed on the fixed contact terminal block (15) with fixed contact (14) following of magnetic conductive board (12).
3. the big capacity contactor of a kind of expanding type according to claim 1 is characterized in that: arc-chute (7) can be made integrated with short arc sheet (9).
4. the big capacity contactor of a kind of expanding type according to claim 1 is characterized in that: moving contact component (10) is touched bridge (6) and is formed by contact (8a, 8b) copper bridge (5) and irony touched for bridge shape
5. the big capacity contactor of a kind of expanding type according to claim 1 is characterized in that: arc control device are that BMC enhancing flame retardant molding material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201528620U CN201440398U (en) | 2009-04-10 | 2009-04-10 | Expansion large-capacity contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201528620U CN201440398U (en) | 2009-04-10 | 2009-04-10 | Expansion large-capacity contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201440398U true CN201440398U (en) | 2010-04-21 |
Family
ID=42545060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201528620U Expired - Fee Related CN201440398U (en) | 2009-04-10 | 2009-04-10 | Expansion large-capacity contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201440398U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143477A (en) * | 2014-06-23 | 2014-11-12 | 浙江天正电气股份有限公司 | Moving contact bridge and contactor with same |
-
2009
- 2009-04-10 CN CN2009201528620U patent/CN201440398U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143477A (en) * | 2014-06-23 | 2014-11-12 | 浙江天正电气股份有限公司 | Moving contact bridge and contactor with same |
| CN104143477B (en) * | 2014-06-23 | 2016-03-02 | 浙江天正电气股份有限公司 | A kind of dynamic contactor touching bridge and apply this dynamic tactile bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20120410 |