CN201689852U - Low-voltage circuit breaker movable contact structure with protecting part - Google Patents
Low-voltage circuit breaker movable contact structure with protecting part Download PDFInfo
- Publication number
- CN201689852U CN201689852U CN2010201632627U CN201020163262U CN201689852U CN 201689852 U CN201689852 U CN 201689852U CN 2010201632627 U CN2010201632627 U CN 2010201632627U CN 201020163262 U CN201020163262 U CN 201020163262U CN 201689852 U CN201689852 U CN 201689852U
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- movable contact
- circuit breaker
- voltage circuit
- low
- arms
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- Expired - Fee Related
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Abstract
The utility model discloses a low-voltage circuit breaker movable contact structure with a protecting part in a contact arc extinguishing system of a low-voltage circuit breaker. The low-voltage circuit breaker movable contact structure comprises the protecting part and a movable contact in a fixedly connected manner; the protecting part is provided with two arms, an arc-shaped portion and a bottom surface connected to the lower portions of the two arms; the two arms are relatively arranged in parallel; a groove capable of containing the movable contact is formed among the two arms and the bottom surface; and the arc-shaped portion is connected onto the lateral surface at one end of the two arms. The protecting part with an arc isolating function is mounted between gaps of a rotary shaft and the movable contact and fixed onto the movable contact, the movable contact is protected by a middle arm portion of the protecting part, and parts inside a rotary shaft cavity are protected by the arc-shaped portion. In the moment that the movable contact and a fixed contact of the low-voltage circuit breaker are dispelled away from each other, the low-voltage circuit breaker movable contact structure can effectively protect the movable contact and the rotary shaft portion from arc erosion, ensures reliable work of equipment, and is extremely convenient in operation.
Description
Technical field
The utility model relates to a kind of contact arc-extinguishing system of low-voltage circuit breaker, relates in particular to moving contact structure wherein.
Background technology
At present, mould the case low-voltage circuit breaker contact arc-extinguishing system and comprise rotating shaft matrix and moving contact, moving contact is installed in the cavity of rotating shaft matrix by parts such as spring and roller bearings.The moving contact structure guard block length of traditional contacts of low-voltage circuit breaker arc quenching system is shorter; when dynamic and static contact is scolded out; the electric arc that is produced corrodes moving contact easily; and leap up easily and enter rotating shaft; parts in the countershaft cavity cause damage, thereby influence the reliability of entire equipment work.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, and a kind of easy for installation, simple in structure and low-voltage circuit breaker moving contact structure with guard block that protective is good is provided.
The technical solution adopted in the utility model is: be composed of a fixed connection by guard block and moving contact two parts; described guard block has two arms, an arcuation part and a bottom surface; the bottom surface is connected in two arm bottoms; be formed with the groove that can hold moving contact between the setting of two arm opposing parallel and itself and the bottom surface, connect an arcuation part on the side of an end of two arms.
The utility model is installed a guard block with electric arc buffer action between the space of rotating shaft and moving contact, guard block is fixed on the moving contact, makes the intermediate arm of guard block partly protect moving contact, is the part protection rotating shaft cavity inner part of arcuation.Scold out moment at the dynamic and static contact of low-voltage circuit breaker, can effectively protect moving contact and rotating shaft partly to avoid the erosion of electric arc, guarantee that equipment work is reliable, operation is very easy.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structure chart of the present utility model.
Fig. 2 is the 3-D view of guard block 1 among Fig. 1.
Fig. 3 is the 3-D view of moving contact 2 among Fig. 1.
Among the figure: 1. guard block; 11. arm; 12. installing and locating hole; 13. installing and locating hole; 14. bottom surface; 15. arcuation part; 2. moving contact; 21. positioning boss; 22. location hole; 3. rivet.
Embodiment
As Fig. 1, the utility model is composed of a fixed connection by guard block 1 and moving contact 2 two parts.As Fig. 2; guard block 1 is made up of two arms 11, arcuation part 15 and a bottom surface 14, and two arm 11 opposing parallel settings connect a bottom surface 14 between the bottom of two arms 11; like this, between two arms 11 and bottom surface 14, form the groove that can hold moving contact 2.Connect an arcuation part 15 on the side of an end of two arms 11, the width of arcuation part 15 is greater than the width between two arms 11.An installing and locating hole 12 and another installing and locating hole 13 are set on two arms 11.
As shown in Figure 3, a positioning boss 21 is set on a side of moving contact 2, the installing and locating hole 12 on this positioning boss 21 and the guard block 1 matches.Also be provided with a location hole 22 on the pivoted arm of moving contact 2, the position of location hole 22 is corresponding with another installing and locating hole 13 on the guard block 1.
During the utility model assembling; moving contact 2 is stuck in the groove of guard block 1; match with an installing and locating hole 12 and another installing and locating hole 13 in the guard block 1 respectively by the positioning boss on the moving contact 2 21, location hole 22; rivet with rivet 3 at location hole 22 places; guard block 1 and moving contact 2 are fixed; after the installation, guard block 1 rotates with the rotation of moving contact 2.
When the utility model uses, the utility model is installed on the contact arc-extinguishing system that forms low-voltage circuit breaker in the cavity of rotating shaft of contact arc-extinguishing system by parts such as spring and roller bearings.In low-voltage circuit breaker work engineering, the arcuation part 15 of guard block 1 is slided in the rotating shaft cavity with the rotation of moving contact 2, is in when scolding open position at moving contact 2, and the arcuation part 15 of guard block 1 is positioned at the porch of the cavity of rotating shaft.Dynamic and static contact at low-voltage circuit breaker is scolded out moment; guard block 1 can be protected the contact system of low-voltage circuit breaker effectively; moving contact 2 can be protected in two arms 11 and the bottom surface 14 that are guard block 1; arcuation part 15 can protect the cavity of rotating shaft partly to avoid arc erosion, thus the equipment of assurance reliably working.
Claims (3)
1. low-voltage circuit breaker moving contact structure with guard block; be composed of a fixed connection by guard block (1) and moving contact (2) two parts; it is characterized in that: described guard block (1) has two arms (11), arcuation part (15) and a bottom surface (14); bottom surface (14) is connected in two arms (11) bottom; be formed with the groove that can hold moving contact (2) between two arms (11) opposing parallel setting and itself and bottom surface (14), connect an arcuation part (15) on the side of an end of two arms (11).
2. the low-voltage circuit breaker moving contact structure with guard block according to claim 1; it is characterized in that: have on moving contact (2) one sides one with guard block (1) on the positioning boss (21) that matches of installing and locating hole (12), have on the pivoted arm of moving contact (2) one with guard block (1) on another installing and locating hole (13) corresponding positioning hole (22).
3. the low-voltage circuit breaker moving contact structure with guard block according to claim 1 is characterized in that: the width of arcuation part (15) is greater than the width between two arms (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201632627U CN201689852U (en) | 2010-04-16 | 2010-04-16 | Low-voltage circuit breaker movable contact structure with protecting part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201632627U CN201689852U (en) | 2010-04-16 | 2010-04-16 | Low-voltage circuit breaker movable contact structure with protecting part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201689852U true CN201689852U (en) | 2010-12-29 |
Family
ID=43378130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201632627U Expired - Fee Related CN201689852U (en) | 2010-04-16 | 2010-04-16 | Low-voltage circuit breaker movable contact structure with protecting part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201689852U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568964A (en) * | 2012-03-08 | 2012-07-11 | 江苏辉能电气有限公司 | Protection assembly of movable static contact of plastic shell breaker |
| CN102592907A (en) * | 2012-03-08 | 2012-07-18 | 江苏辉能电气有限公司 | Fixed contact structure of plastic-shell circuit breaker packed with plastic parts |
| CN102938354A (en) * | 2012-11-15 | 2013-02-20 | 西安交通大学 | Contact and arc extinction system of mold case circuit breaker |
-
2010
- 2010-04-16 CN CN2010201632627U patent/CN201689852U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568964A (en) * | 2012-03-08 | 2012-07-11 | 江苏辉能电气有限公司 | Protection assembly of movable static contact of plastic shell breaker |
| CN102592907A (en) * | 2012-03-08 | 2012-07-18 | 江苏辉能电气有限公司 | Fixed contact structure of plastic-shell circuit breaker packed with plastic parts |
| CN102568964B (en) * | 2012-03-08 | 2014-03-19 | 江苏辉能电气有限公司 | Protection assembly of movable static contact of plastic shell breaker |
| CN102592907B (en) * | 2012-03-08 | 2014-04-16 | 江苏辉能电气有限公司 | Fixed contact structure of plastic-shell circuit breaker packed with plastic parts |
| CN102938354A (en) * | 2012-11-15 | 2013-02-20 | 西安交通大学 | Contact and arc extinction system of mold case circuit breaker |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20170416 |