CN201522977U - Contact arm for circuit breaker - Google Patents
Contact arm for circuit breaker Download PDFInfo
- Publication number
- CN201522977U CN201522977U CN2009201789480U CN200920178948U CN201522977U CN 201522977 U CN201522977 U CN 201522977U CN 2009201789480 U CN2009201789480 U CN 2009201789480U CN 200920178948 U CN200920178948 U CN 200920178948U CN 201522977 U CN201522977 U CN 201522977U
- Authority
- CN
- China
- Prior art keywords
- contact arm
- fixed block
- connects
- circuit breaker
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Disclosed is a contact arm for a circuit breaker. The circuit breaker (1) comprises two end portions, wherein one end portion is a movable contact connecting end portion (12) while the other end portion is a fixing block connecting end portion (11), the fixing block connecting end portion (11) comprises a fixing device (14), and the movable contact connecting end portion (12) is a hollow column. The contact arm not only is fine in property, but also is simple and convenient in manufacturing, low in cost and lighter in weight.
Description
Technical field
The utility model relates to a kind of contact arm that is used for circuit breaker, but particularly relates to a kind of contact arm that is used for the withdraw-type circuit breaker.
Background technology
In existing Medium Voltage Switchgear, but, the moving contact of withdraw-type circuit breaker and fixed contact in the switch cabinet body be communicated with main circuit by being engaged.These moving contacts can be quincunx or duck-beak type, and are connected to fixed block by contact arm, thereby are fixed to circuit breaker.These contact arms are made by solid copper rod usually, and need to carry out a large amount of cut in manufacture process.
The utility model content
The purpose of this utility model is to provide a kind of contact arm that is used for circuit breaker.This contact arm not only shows well, and make easy, with low cost, weight is lighter.In addition, but the utility model also provides a kind of withdraw-type circuit breaker that uses described contact arm, and a kind of switching device that uses described contact arm.
Described purpose realizes by a kind of contact arm that is used for circuit breaker.Described contact arm comprises two ends, and one of them end is that a moving contact connects the end, and the other end is fixed block connection end.Described fixed block connects the end and comprises fixture.It is a hollow posts that described moving contact connects the end.
According to an aspect of the present utility model, it is a hollow circuit cylinder that described moving contact connects the end.
According on the other hand of the present utility model, it is a hollow posts that described fixed block connects the end.
According to one side more of the present utility model, it is a hollow prism that described fixed block connects the end.
According to another aspect of the present utility model, has a middle transition portion between described moving contact connection end and the described fixed block connection end.
According to another aspect of the present utility model, the opposed outer surface that described fixed block connects on the end is parallel to each other.
According to another aspect of the present utility model, described fixed block connects in the end that interior surface opposing is close to each other and is parallel to each other, and the outer surface that connects the end corresponding to the described fixed block of described inner surface is also parallel to each other.
According to another aspect of the present utility model, described fixed block connects the bending that the end has 90 °.
Advantage of the present utility model is: because the manufacturing of described contact arm need not cutting, thus can adopt copper pipe to realize original contact arm easily with solid copper rod manufacturing and a large amount of cuttings of palpus, thus material greatly saved.In copper product expensive day by day today, this point is especially obvious.In addition, making contact arm of the present utility model by the mode of punching press copper pipe has also saved the time.Hollow characteristics also make the weight of contact arm greatly alleviate in the past.
Description of drawings
In conjunction with the following drawings, feature and advantage of the present utility model will become clearer.Wherein:
Fig. 1 has shown the front view of a kind of execution mode of the utility model contact arm;
Fig. 2 has shown the right view of the utility model contact arm of Fig. 1;
Fig. 3 has shown the stereogram of the utility model contact arm of Fig. 1.
Embodiment
Fig. 1 has shown the front view of first execution mode of the present utility model, and wherein contact arm 1 comprises that a fixed block connects end 11 and is connected end 12 with a moving contact, and the middle transition portion 13 between fixed block connection end 11 and moving contact connection end 12.It will be understood by those skilled in the art that at fixed block to connect under end 11 is connected end 12 with moving contact the measure-alike situation of abutting end, will not have middle transition portion 13.When fixed block connected end 11 and is connected to fixed block, fixed block connected in two parallel outer surfaces of end 11 one and contacts with the surperficial face of this fixed block.Moving contact connects end 12 and is preferably hollow circuit cylinder.
The contact arm 1 of first execution mode of the present utility model shown in Figure 1 forms by a copper pipe is carried out punching press, promptly a part of copper pipe is carried out punching press with punch press, make that the inner surface of two relative semicircles gradually becomes two relative arc-shaped inner surfaces in this part, and finally become two relative flat inner surfaces.The contact of the mutual face of these two flat inner surfaces, and be close to each other and parallel to each other.In the present embodiment, also parallel to each other corresponding to two outer surfaces on the described fixed block connection end 11 of described two inner surfaces, connect end 11 thereby formed fixed block.Meanwhile, another part of copper pipe keeps original hollow circuit cylinder constant, connects end 12 thereby form moving contact.Through after the above-mentioned processing, connect between end 11 and the moving contact connection end 12 and will form a middle transition portion 13 naturally at fixed block.After this, use bender that the part that fixed block connects end 11 is carried out 90 ° of bendings, and on the part after the bending, get out four holes 14.By passing the bolt in these holes, contact arm 1 can be installed to the fixed block of circuit breaker.
According to unshowned second execution mode of the present utility model, fixed block connects end 11 or moving contact and connects in the end 12 one and form one with middle transition portion 13, is connected in end 11 or the moving contact connection end 12 another with fixed block by suitable jockey again and fixes.For example, form whole solid fixed block and connect end 11 and middle transition portion 13, again it is fixed to the moving contact of being made by hollow cylinder by connected mode such as spin and connects end 12 by the casting blank is processed.
According to unshowned the 3rd execution mode of the present utility model, fixed block connects end 11, moving contact connects end 12 and middle transition portion 13 is separated from each other.Fixed block connects end 11 and is fixed to middle transition portion 13 by connected modes such as riveted joint, pin joints, and moving contact connection end 12 is fixed to middle transition portion 13 by connected mode such as spin.
The cross section profile that it will be understood by those skilled in the art that the cylinder described in the present specification can be for circular or oval.The cross section profile of described prism can be the Any shape beyond circular or the ellipse.The inside of described hollow posts can be to be close to each other and slit that plane parallel to each other forms by two.
Although more than showed execution mode of the present utility model, described execution mode is not intended to show all possible form of the present utility model.In addition, the content in this specification is descriptive, and nonrestrictive.Those skilled in the art can make variations and modifications to the content of this specification, and do not depart from the scope of purport of the present utility model and claim.
Claims (10)
1. contact arm that is used for circuit breaker, described contact arm (1) comprises two ends, one of them end is that a moving contact connects end (12), and the other end is fixed block connection end (11), described fixed block connects end (11) and comprises fixture (14), it is characterized in that: it is a hollow posts that described moving contact connects end (12).
2. contact arm as claimed in claim 1 is characterized in that: it is a hollow circuit cylinder that described moving contact connects end (12).
3. as the described contact arm of each claim in claim 1 or 2, it is characterized in that: it is a hollow posts that described fixed block connects end (11).
4. contact arm as claimed in claim 3 is characterized in that: it is a hollow prism that described fixed block connects end (11).
5. contact arm as claimed in claim 3 is characterized in that: have a middle transition portion (13) between described moving contact connection end (12) and the described fixed block connection end (11).
6. contact arm as claimed in claim 4 is characterized in that: the opposed outer surface that described fixed block connects on the end (11) is parallel to each other.
7. contact arm as claimed in claim 5 is characterized in that: described fixed block connects in the end (11) that interior surface opposing is close to each other and is parallel to each other, and the outer surface that connects end (11) corresponding to the described fixed block of described inner surface is also parallel to each other.
8. contact arm as claimed in claim 7 is characterized in that: described fixed block connects the bending that end (11) has 90 °.
9. but withdraw-type circuit breaker that uses contact arm as claimed in claim 1.
10. switching device that uses contact arm as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201789480U CN201522977U (en) | 2009-09-29 | 2009-09-29 | Contact arm for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201789480U CN201522977U (en) | 2009-09-29 | 2009-09-29 | Contact arm for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522977U true CN201522977U (en) | 2010-07-07 |
Family
ID=42509153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201789480U Expired - Fee Related CN201522977U (en) | 2009-09-29 | 2009-09-29 | Contact arm for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201522977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900429A (en) * | 2015-06-12 | 2015-09-09 | 中国西电电气股份有限公司 | Contact structure for non-vacuum medium, and switch |
-
2009
- 2009-09-29 CN CN2009201789480U patent/CN201522977U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900429A (en) * | 2015-06-12 | 2015-09-09 | 中国西电电气股份有限公司 | Contact structure for non-vacuum medium, and switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20150929 |
|
| EXPY | Termination of patent right or utility model |