CN202434447U - Breaker and contact assembly for breaker - Google Patents
Breaker and contact assembly for breaker Download PDFInfo
- Publication number
- CN202434447U CN202434447U CN2011205254190U CN201120525419U CN202434447U CN 202434447 U CN202434447 U CN 202434447U CN 2011205254190 U CN2011205254190 U CN 2011205254190U CN 201120525419 U CN201120525419 U CN 201120525419U CN 202434447 U CN202434447 U CN 202434447U
- Authority
- CN
- China
- Prior art keywords
- contact
- spring
- spring catch
- lobe plate
- curvature portion
- 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
Links
Images
Landscapes
- Breakers (AREA)
Abstract
The utility model relates to a breaker and a contact assembly (1) for the breaker. The contact assembly (1) comprises a static contact (2), a movable contact (10), a contact spring (4) provided with a first end (7) and a second end (8) and a protruding wheel plate (5). The protruding wheel plate (5) is provided with a protruding wheel face with an outline, and the first end of the contact spring (4) is connected with a first spring pin (6) fixed on the protruding wheel plate (5). The protruding wheel face with the outline comprises a first curve portion (11), a second curve portion (12) and a third curve portion (13). The contact assembly is characterized in that the third curve portion (13) is concentric with the first spring pin (6).
Description
Technical field
The utility model relates generally to electric switching device, and relates more specifically to circuit breaker and the contact assembly that is used for circuit breaker.
Background technology
Circuit breaker is widely used for electric power source is supplied to load or is not having load condition incision outage power source, and because short circuit etc. are cut off the power that is supplied to load from electric power source when causing big abnormal current, so that protective circuit and electric loading equipment.When big electric current was flowed through circuit breaker, tripping mechanism was automatically operated so that removable contact is separated with fixed contact.When removable contact when fixed contact separates, the elastic-restoring force of contact spring increases, thus removable contact possibly contact with fixed contact once more, so damages the function of circuit breaker.
Thereby, need a kind of improved when short circuit the contact assembly of cut-off breaker safely and reliably.
The utility model content
The purpose of the utility model be to provide a kind of improved when short circuit the contact assembly of cut-off breaker safely and reliably.
An embodiment according to the utility model provides a kind of contact assembly that is used for circuit breaker, comprising: fixed contact; Removable contact; Contact spring, said contact spring have first end and second end; And lobe plate; Said lobe plate has the belt profile cam surface; First end of said contact spring is connected to first spring catch, and said first spring catch is fixed on the lobe plate, and said belt profile cam surface comprises first surface part, second curvature portion and the 3rd curvature portion; It is characterized in that the 3rd curvature portion is concentric with said first spring catch.
Preferably, said removable contact comprises at least one contact arm that is arranged on its place, two ends, and said contact arm can move between contact position and separation point position.
Preferably, each contact arm is provided with the groove that holds second spring catch, and second end of said contact spring is pivotably connected to said second spring catch.
Preferably, when said contact arm is in contact position, there is the gap between said second spring catch and the lobe plate.
Preferably, when said contact arm when move the separation point position, said second spring catch slides on said belt profile cam surface.
Preferably, when said contact arm was in said separation point position, said second spring catch was only supported by lobe plate, and can't help the recess supports of contact arm.
Another embodiment according to the utility model provides a kind of circuit breaker, comprises contact assembly, and said contact assembly comprises: fixed contact; Removable contact; Contact spring, said contact spring have first end and second end; And lobe plate; Said lobe plate has the belt profile cam surface; First end of said contact spring is connected to first spring catch, and said first spring catch is fixed on the lobe plate, and said belt profile cam surface comprises first surface part, second curvature portion and the 3rd curvature portion; It is characterized in that the 3rd curvature portion is concentric with said first spring catch.
Other exemplary embodiment of the utility model is obvious from the detailed description that hereinafter provides.Should be understood that,, only be used for illustration purpose and be not intended to limit the scope of the utility model though said detailed description and concrete example disclose the exemplary embodiment of the utility model.
Description of drawings
To combine following accompanying drawing to describe at least one embodiment hereinafter, wherein, identical Reference numeral is represented components identical.
Fig. 1 is the stereogram according to the contact assembly of the utility model, and wherein, contact arm is in contact position.
Fig. 2 is the plane graph according to the contact assembly of the utility model, and wherein, contact arm is in 6.5 ° of overtravel positions.
Fig. 3 is the plane graph according to the contact assembly of the utility model, and wherein, contact arm is in 15 ° of overtravel positions.
Fig. 4 is the plane graph according to the contact assembly of the utility model, and wherein, contact arm is in 25 ° of open positions.
Fig. 5 is the plane graph according to the contact assembly of the utility model, and wherein, contact arm is in 43.5 ° of open positions.
Fig. 6 is the plane graph according to the contact assembly of the utility model, and wherein, contact arm is in the separation point position.
Embodiment
Be merely exemplary on the following illustrative in nature and never be intended to limit the utility model, it application or use.In the accompanying drawings, identical Reference numeral is used to represent identical or similar parts.
With reference now to Fig. 1,, shows exemplary circuit breaker according to the utility model.Circuit breaker is widely used for electric power source is supplied to load or is not having load condition incision outage power source, and because short circuit etc. are cut off the power that is supplied to load from electric power source when causing big abnormal current, so that protective circuit and electric loading equipment.
An embodiment according to the utility model; Circuit breaker comprises contact assembly 1; Contact assembly 1 can comprise armature spindle (not shown), fixed contact 2, removable contact 10 and lobe plate 5; Said armature spindle is provided with the opening (not shown), and said opening allows the independent rotation of removable contact 10, so that rotatably support removable contact 10.
Contact assembly 1 also can comprise contact spring 4, first spring catch 6 and second spring catch 15, and said contact spring 4 has first end 7 and second end 8.First end 7 of said contact spring 4 is connected to first spring catch 6.Said first spring catch 6 is fixed to lobe plate 5.Each contact arm 3 is provided with the groove 9 that holds second spring catch 15, and second end 8 of said contact spring 4 is pivotably connected to said second spring catch 15.When big electric current was flowed through circuit breaker, tripping mechanism was automatically operated so that said removable contact 10 is separated with said fixed contact 2.
Fig. 2 to Fig. 6 shows the diverse location according to the contact arm 3 of the contact assembly 1 of the utility model.Said lobe plate 5 has the belt profile cam surface, and said belt profile cam surface comprises first surface part 11, second curvature portion 12 and the 3rd curvature portion 13.Said first surface part 11 is corresponding to the overtravel part of said contact assembly 1; Said the 3rd curvature portion 13 is corresponding to the part that surpasses said overtravel part, and said second curvature portion 12 is the transition portion between said first surface part 11 and said the 3rd curvature portion 13.
When said contact arm 3 is in contact position, there is the gap between said second spring catch 15 and the lobe plate 5, so that allow the overtravel of said contact arm 3.Overtravel refers to the closed fully mobile distance of removable contact afterwards of contact assembly 1 of circuit breaker.
Fig. 2 shows contact arm 3 and is in 6.5 ° of overtravel positions.In Fig. 2, there is the gap between said second spring catch 15 and the said lobe plate 5, for example 0.3 mm.
Fig. 3 shows contact arm 3 and is in 15 ° of overtravel positions.In Fig. 3, said second spring catch 15 contacts with the said belt profile cam surface of said lobe plate 5, contacts with the said first surface part 11 of said lobe plate 5 particularly, that is: the gap between said second spring catch 15 and the said lobe plate 5 is zero.Thereby contact arm 3 will slow down through the frictional force between said second spring catch 15 and the lobe plate 5 opening moving of direction.Afterwards, said second spring catch 15 continues on the said first surface part 11 of said lobe plate 5, to slide.
Fig. 4 shows contact arm 3 and is in 25 ° of open positions.In Fig. 4, said second spring catch 15 slides on said second curvature portion 12 of said lobe plate 5.
Fig. 5 shows contact arm 3 and is in 43.5 ° of open positions.In Fig. 5, said second spring catch 15 slides on said the 3rd curvature portion 13 of said lobe plate 5.In the rotation process of said contact arm 3, owing to said contact spring 4 is loaded, thereby the increase of the elastic-restoring force of said contact spring 4, thereby said removable contact 10 possibly contact with said fixed contact 2 once more, therefore damages the function of circuit breaker.
An embodiment according to the utility model; Said the 3rd curvature portion 13 is concentric with said first spring catch 6; By this; The increase elastic-restoring force that said first spring catch 6 is produced is concentric with said the 3rd curvature portion 13, thereby can not make said removable contact 10 rotate towards contact position.When said contact arm 3 was in said separation point position, said second spring catch 15 was only supported by said lobe plate 5, supported and can't help the said groove 9 of said contact arm 3.
Because friction possibly make said the 3rd curvature portion 13 from departing from a little with one heart fully, so that obtain little closed once more momentum, thereby helps from open position replacement contact arm 3.
Fig. 6 shows contact arm 3 and is in the separation point position.In Fig. 6; When user's moving handle makes the switching mechanism rotor axle that is connected to handle or when tripping mechanism detects abnormal current; Support the armature spindle rotation of removable contact 10, thereby make removable contact 10 and lobe plate 5 rotate with armature spindle.
Because said the 3rd curvature portion 13 is concentric with said first spring catch 6; By this; The increase elastic-restoring force that said first spring catch 6 is produced is concentric with said the 3rd curvature portion 13; Thereby can not make said removable contact 10 rotate towards contact position, this has increased the operating reliability and the fail safe of circuit breaker.
The utility model has been described some preferred embodiment and modification thereof.Those skilled in the art are reading and are understanding specification and can expect other modification and variation later.Thereby the utility model is not limited to as the disclosed specific embodiment of optimal mode that is used to implement the utility model, and the utility model will comprise all embodiment that fall in the claim scope.
Claims (7)
1. a contact assembly (1) that is used for circuit breaker comprising: fixed contact (2); Removable contact (10); Contact spring (4), said contact spring (4) have first end (7) and second end (8); And lobe plate (5); Said lobe plate (5) has the belt profile cam surface; First end (7) of said contact spring (4) is connected to first spring catch (6), and said first spring catch (6) is fixed on the lobe plate (5), and said belt profile cam surface comprises first surface part (11), second curvature portion (12) and the 3rd curvature portion (13); It is characterized in that the 3rd curvature portion (13) is concentric with said first spring catch (6).
2. contact assembly according to claim 1 is characterized in that, said removable contact (10) comprises at least one contact arm (3) that is arranged on its place, two ends, and said contact arm (3) can move between contact position and separation point position.
3. contact assembly according to claim 2; It is characterized in that; Each contact arm (3) is provided with the groove (9) that holds second spring catch (15), and second end (8) of said contact spring (4) is pivotably connected to said second spring catch (15).
4. contact assembly according to claim 3 is characterized in that, when said contact arm (3) when being in contact position, has the gap between said second spring catch (15) and the lobe plate (5).
5. contact assembly according to claim 3 is characterized in that, when said contact arm (3) when move the separation point position, said second spring catch (15) slides on said belt profile cam surface.
6. contact assembly according to claim 3 is characterized in that, when said contact arm (3) when being in said separation point position, said second spring catch (15) is only supported by lobe plate (5), supports and can't help the groove (9) of contact arm (3).
7. a circuit breaker comprises contact assembly (1), and said contact assembly (1) comprising: fixed contact (2); Removable contact (10); Contact spring (4), said contact spring (4) have first end (7) and second end (8); And lobe plate (5); Said lobe plate (5) has the belt profile cam surface; First end (7) of said contact spring (4) is connected to first spring catch (6), and said first spring catch (6) is fixed on the lobe plate (5), and said belt profile cam surface comprises first surface part (11), second curvature portion (12) and the 3rd curvature portion (13); It is characterized in that the 3rd curvature portion (13) is concentric with said first spring catch (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205254190U CN202434447U (en) | 2011-12-15 | 2011-12-15 | Breaker and contact assembly for breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205254190U CN202434447U (en) | 2011-12-15 | 2011-12-15 | Breaker and contact assembly for breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202434447U true CN202434447U (en) | 2012-09-12 |
Family
ID=46783874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205254190U Expired - Fee Related CN202434447U (en) | 2011-12-15 | 2011-12-15 | Breaker and contact assembly for breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202434447U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094015A (en) * | 2013-01-30 | 2013-05-08 | 贵州长征开关制造有限公司 | Modularized double breakpoint plastic shell type circuit breaker |
| CN105097309A (en) * | 2014-05-07 | 2015-11-25 | 河村电器产业株式会社 | Contact structure used in breaker or switch |
-
2011
- 2011-12-15 CN CN2011205254190U patent/CN202434447U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094015A (en) * | 2013-01-30 | 2013-05-08 | 贵州长征开关制造有限公司 | Modularized double breakpoint plastic shell type circuit breaker |
| CN105097309A (en) * | 2014-05-07 | 2015-11-25 | 河村电器产业株式会社 | Contact structure used in breaker or switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104319203A (en) | Breaker operation mechanism | |
| CN202434447U (en) | Breaker and contact assembly for breaker | |
| EP2472537B1 (en) | Movable contactor assembly for current limiting type circuit breaker | |
| US9384912B2 (en) | Circuit breaker | |
| CN103337392B (en) | A kind of switch on-off mechanism of electric tool | |
| ATE367645T1 (en) | LEADING AUXILIARY SWITCH FOR CIRCUIT BREAKERS | |
| CN106471597B (en) | High current, the disconnect switch that compact is fusible with double slide bar actuator components | |
| US9287061B1 (en) | Rotor and electromechanical switching device having a rotor | |
| US8604374B2 (en) | Moveable contact closing energy transfer system for miniature circuit breakers | |
| CN103050344B (en) | Rotation double-breakpoint movable contact module | |
| WO2016064482A1 (en) | Electrical switching apparatus and transmission assembly therefor | |
| CN102214530B (en) | Switch, especially power switch | |
| KR20160136057A (en) | Power transfer switch | |
| CN203521342U (en) | Contact system of breaker | |
| CN102956410B (en) | Movable contactor assembly for molded case circuit breaker | |
| KR101015276B1 (en) | Elastic pressing unit and molded case circuit breaker having the same | |
| EP2874172B1 (en) | Circuit breaker with input load increasing means | |
| CN105723485B (en) | Double with individual vanes close double break formula contact maker module | |
| CN107342190B (en) | A kind of pushing mechanism of bistable magnetic latching relay | |
| CA2911121C (en) | Circuit breakers with moving contact having heel-toe action | |
| CN205016486U (en) | Cross under -voltage release | |
| JP5714181B2 (en) | Circuit breaker | |
| CN220509924U (en) | Switching structure and contactor | |
| CN221176114U (en) | Quick closing mechanism and circuit breaker | |
| CN203434107U (en) | Moulded case circuit breaker |
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: 20120912 Termination date: 20191215 |