CN204558397U - A kind of circuit breaker - Google Patents
A kind of circuit breaker Download PDFInfo
- Publication number
- CN204558397U CN204558397U CN201520219212.9U CN201520219212U CN204558397U CN 204558397 U CN204558397 U CN 204558397U CN 201520219212 U CN201520219212 U CN 201520219212U CN 204558397 U CN204558397 U CN 204558397U
- Authority
- CN
- China
- Prior art keywords
- contact
- protective sleeve
- circuit breaker
- contact knife
- knife
- 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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Abstract
The utility model relates to technical field of electric appliances, title is a kind of circuit breaker, comprise base, fixed contact and contact knife, contact knife is hinged on base, contact knife contacts with fixed contact, circuit breaker is open-minded, contact knife is separated with fixed contact, circuit breaker disconnects, described contact knife installs a protective sleeve at the position contacted with fixed contact, the tangent plane of described protective sleeve is " U " shape structure, there is opening, opening has jurisdiction over the position contacted with fixed contact at contact knife, there is fixing threaded hole in protective sleeve side and fixing silk is installed, the gap contacted with contact knife at protective sleeve also scribbles conductive paste, described protective sleeve is silver, it is low that such circuit breaker has replacement cost after the position of contact knife contact is burnt, advantage easy to maintenance.
Description
Technical field
The utility model relates to technical field of electric appliances, specifically relates to circuit breaker.
Background technology
Circuit breaker comprises base, fixed contact and contact knife, and contact knife is hinged on base, and contact knife contacts with fixed contact, and circuit breaker is open-minded, and contact knife is separated with fixed contact, and circuit breaker disconnects; In prior art, contact knife does not have the parts that can change, and in use contact continually due to contact knife and fixed contact and disconnect, contact knife will burn because of electric spark, affects the normal use of circuit breaker, change contact knife have cost high, change troublesome shortcoming.
Summary of the invention
The purpose of this utility model is exactly for above-mentioned shortcoming, the circuit breaker that after providing a kind of position when contact knife contact to burn, replacement cost is low, easy to maintenance.
The technical solution of the utility model is achieved in that a kind of circuit breaker; comprise base, fixed contact and contact knife; contact knife is hinged on base; contact knife contacts with fixed contact; circuit breaker is open-minded; contact knife is separated with fixed contact; circuit breaker disconnects; it is characterized in that: described contact knife installs a protective sleeve at the position contacted with fixed contact; the tangent plane of described protective sleeve is " U " shape structure; have opening, opening has jurisdiction over the position contacted with fixed contact at contact knife, has fixing threaded hole and install fixing silk in protective sleeve side.
Say further, the gap contacted with contact knife at protective sleeve also scribbles conductive paste.
Say further, described protective sleeve is silver.
The beneficial effects of the utility model are: such circuit breaker has low, the easy to maintenance advantage of replacement cost after the position of contact knife contact is burnt; The gap contacted with contact knife at protective sleeve also scribbles conductive paste, has the advantage that conduction is good; Described protective sleeve is silver, has the advantage that protective sleeve is durable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A-A cross-sectional view of Fig. 1.
Wherein: 1, base 2, fixed contact 3, contact knife 4, protective sleeve 5, fixing silk 6, conductive paste.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of circuit breaker, comprises base 1, fixed contact 2 and contact knife 3; contact knife is hinged on base; contact knife contacts with fixed contact, and circuit breaker is open-minded, and contact knife is separated with fixed contact; circuit breaker disconnects; it is characterized in that: described contact knife installs a protective sleeve 4 at the position contacted with fixed contact, the tangent plane of described protective sleeve is " U " shape structure, has opening; opening has jurisdiction over the position contacted with fixed contact at contact knife, has fixing threaded hole and install fixing silk 5 in protective sleeve side.When the utility model protective sleeve burns, can protective sleeve be changed, there is advantage of the present utility model.
Say further, also scribble conductive paste 6 in the gap that protective sleeve contacts with contact knife.
Say further, described protective sleeve is silver.
The foregoing is only specific embodiments of the invention, but architectural feature of the present invention is not limited to this, any those skilled in the art is in the field of the invention, and the change done or modification are all encompassed in the scope of the claims of the present invention.
Claims (3)
1. a circuit breaker; comprise base, fixed contact and contact knife, contact knife is hinged on base, and contact knife contacts with fixed contact; circuit breaker is open-minded; contact knife is separated with fixed contact, and circuit breaker disconnects, and it is characterized in that: described contact knife installs a protective sleeve at the position contacted with fixed contact; the tangent plane of described protective sleeve is " U " shape structure; have opening, opening has jurisdiction over the position contacted with fixed contact at contact knife, has fixing threaded hole and install fixing silk in protective sleeve side.
2. circuit breaker according to claim 1, is characterized in that: the gap contacted with contact knife at protective sleeve also scribbles conductive paste.
3. circuit breaker according to claim 1 and 2, is characterized in that: described protective sleeve is silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219212.9U CN204558397U (en) | 2015-04-14 | 2015-04-14 | A kind of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219212.9U CN204558397U (en) | 2015-04-14 | 2015-04-14 | A kind of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204558397U true CN204558397U (en) | 2015-08-12 |
Family
ID=53833480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520219212.9U Expired - Fee Related CN204558397U (en) | 2015-04-14 | 2015-04-14 | A kind of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204558397U (en) |
-
2015
- 2015-04-14 CN CN201520219212.9U patent/CN204558397U/en not_active Expired - Fee Related
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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: 20150812 Termination date: 20160414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |