CN202473785U - Multipolar molded case circuit breaker - Google Patents
Multipolar molded case circuit breaker Download PDFInfo
- Publication number
- CN202473785U CN202473785U CN2011205149226U CN201120514922U CN202473785U CN 202473785 U CN202473785 U CN 202473785U CN 2011205149226 U CN2011205149226 U CN 2011205149226U CN 201120514922 U CN201120514922 U CN 201120514922U CN 202473785 U CN202473785 U CN 202473785U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- housing
- bearing
- protuberance
- connecting rod
- 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 - Lifetime
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2041—Rotating bridge
- H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
- H01H73/045—Bridging contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H2003/326—Driving mechanisms, i.e. for transmitting driving force to the contacts using bearings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H2009/0094—Details of rotatable shafts which are subdivided; details of the coupling means thereof
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- Breakers (AREA)
Abstract
The utility model discloses a multipolar molded case circuit breaker, comprising an opening and closing operating mechanism and at least two monopole circuit break units in parallel combination together. The monopole circuit break units possess shells combined together oppositely and also comprise movable contacts, static contacts and arc extinguish chambers arranged in the shells, the adjacent monopole circuit break units are connected via a positioning rod, and the rotating shafts of the monopole circuit break units are connected together via a connecting rod; the connecting rod penetrates the curved long holes on the shells and moves in the long holes to drive the rotating shafts to do gyratory motion, the gyration centers of the rotating shafts are equipped with protrusion parts, the shells are equipped with bearing holes in which the protrusion parts can be embedded, and the rotating shafts can surround the protrusion parts to rotate in the bearing holes. The multipolar molded case circuit breaker of the utility model guarantees that the phase pole rotating shaft positioning accuracies between the multiple monopole circuit break units are consistent, and enables the contact reliability between the movable and static contacts to be improved.
Description
Technical field
The utility model relates to the circuit-breaker field, is specifically related to a kind of multipole breaker of plastic casing.
Background technology
Existing circuit-breaker with revolving double breakpoints structure like Chinese invention patent " ZL92111529.6 has the multipole circuit breaker of single pole units ", has phase insulation property and good airproof performance, the reliable advantage of each utmost point dynamic/static contact contact equilibrium; Describe according to it, on some middle single pole units, fixing the mechanism of a canonical form, there are two metal rims in the outside of mechanism; Be parallel to each other and separate the distance of a corresponding single pole units width; Each flange support a bearing of crank, and crank has axle, and it is by mechanism operating.The revolution of crank passes to different rotating shaft (bar block) through two bars, contact is broken off and connection.But there is following problem in prior art: (a) centre of gyration of the different rotating shafts bearing place that all is positioned at flange and supported, and be prone to cause phase utmost point rotating shaft positioning accuracy to reduce away from operating mechanism, reduce the reliability of contact contact; (b) pressure between the circuit breaker dynamic/static contact is very big, and the rotating shaft positioning accuracy reduces, and can cause the moving contact pressure at bridge-shaped contact two ends inhomogeneous, and this can cause potential safety hazard.Therefore; How to design a kind of multipole breaker of plastic casing; Can guarantee that the phase utmost point rotating shaft positioning accuracy between a plurality of one pole breaking units is consistent, and improve the reliability that contacts between the dynamic/static contact, the multipole breaker of plastic casing that reduces to wear and tear, become the direction that those skilled in the art make great efforts.
Summary of the invention
The utility model purpose provides a kind of multipole breaker of plastic casing, and this multipole breaker of plastic casing has guaranteed that the phase utmost point rotating shaft positioning accuracy between a plurality of one pole breaking units is consistent, and has improved the reliability that contacts between the dynamic/static contact.
For achieving the above object; The technical scheme that the utility model adopts is: a kind of multipole breaker of plastic casing, comprise breaking-closing operating mechanism and at least two one pole breaking units that are parallel together, and this one pole breaking units has the housing that combines in opposite directions; Also comprise the moving contact, fixed contact and the arc control device that are installed in the said housing; This moving contact is by shaft support, and the rotating shaft of each one pole breaking units connects through connecting rod, and this connecting rod passes the slotted hole of housing upper curve shape; Thereby this connecting rod moves the drive rotating shaft and does gyration in slotted hole; The centre of gyration place of said rotating shaft is provided with protuberance, and said housing is provided with the bearing holes that can supply protuberance to embed, and said rotating shaft can be rotated in bearing holes around its protuberance.
Further improved technical scheme is following in the technique scheme:
1, in the such scheme, the protuberance of said rotating shaft is provided with metal bearing, and the bearing holes internal fixation of said housing has metal axle sleeve; Said metal bearing and metal axle sleeve material are steel-brass or steel-tin bronze.
2, in the such scheme, the protuberance outer rim of said rotating shaft is fixed with first becket, and the bearing holes internal fixation of said housing has second becket; Said first becket and the second becket material are steel-brass or steel-tin bronze.
3, in the such scheme, described metal bearing can be sliding bearing or rolling bearing.
Because the technique scheme utilization, the utility model compared with prior art has advantage and effect:
The multipole breaker of plastic casing of the utility model has guaranteed that the phase utmost point rotating shaft positioning accuracy between a plurality of one pole breaking units is consistent, has improved the reliability that contacts between the dynamic/static contact; Secondly, the multipole breaker of plastic casing of the utility model through the protuberance and the bearing holes location of said rotating shaft, has improved the intensity of rotating shaft, has guaranteed that the rotating shaft of each one pole breaking units is rotated synchronously.
Description of drawings
Accompanying drawing 1 is the schematic perspective view of the multipole breaker of plastic casing of the utility model;
Accompanying drawing 2 is the three-dimensional exploded view of the utility model one pole breaking units;
Accompanying drawing 3 is the utility model one pole breaking units embodiment two three-dimensional exploded views.
In the above accompanying drawing: 1, breaking-closing operating mechanism; 2, one pole breaking units; 3, backstay; 4, housing; 5, moving contact; 6, fixed contact; 7, arc control device; 8, rotating shaft; 9, arc extinguishing chamber; 10, connecting rod; 11, slotted hole; 12, protuberance; 13, bearing holes; 14, metal axle sleeve; 15, metal bearing; 16, first becket; 17, second becket; 18, hole.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment one: a kind of multipole breaker of plastic casing; Shown in accompanying drawing 1-2; Comprise breaking-closing operating mechanism 1 and at least two one pole breaking units 2 that are parallel together, this one pole breaking units 2 has the housing 4 that combines in opposite directions, also comprises the moving contact 5, fixed contact 6 and the arc control device 7 that are installed in the said housing 4; This moving contact 5 is by rotating shaft 8 supportings, and it is corresponding with it that each is provided with an arc extinguishing chamber 9 to moving contact 5 and fixed contact 6; Said adjacent one pole breaking units 2 connects through backstay 3, and the rotating shaft 8 of each one pole breaking units 2 connects through two connecting rods 10, and this connecting rod 10 passes the slotted hole 11 of housing 4 upper curve shapes; Thereby this connecting rod 10 moves drive rotating shaft 8 and does gyration in slotted hole 11; The centre of gyration place of said rotating shaft 8 is provided with protuberance 12, and said housing 4 is provided with the bearing holes 13 that can supply protuberance 12 to embed, and said rotating shaft 8 can be rotated in bearing holes 13 around its protuberance 12.
The protuberance 12 of above-mentioned rotating shaft 8 is a metal bearing 15, and bearing holes 13 internal fixation of said housing 4 have metal axle sleeve 14.
Above-mentioned metal bearing 15 is steel-brass or steel-tin bronze with metal axle sleeve 14 materials.
Above-mentioned metal bearing 15 can be sliding bearing or rolling bearing.
Embodiment two: a kind of multipole breaker of plastic casing; Shown in accompanying drawing 1-3; Comprise breaking-closing operating mechanism 1 and at least two one pole breaking units 2 that are parallel together, this one pole breaking units 2 has the housing 4 that combines in opposite directions, also comprises the moving contact 5, fixed contact 6 and the arc control device 7 that are installed in the said housing 4; This moving contact 5 is by rotating shaft 8 supportings, and it is corresponding with it that each is provided with an arc extinguishing chamber 9 to moving contact 5 and fixed contact 6; Said adjacent one pole breaking units 2 connects through backstay 3, and the rotating shaft 8 of each one pole breaking units 2 connects through connecting rod 10, and this connecting rod 10 passes the slotted hole 11 of housing 4 upper curve shapes; Thereby this connecting rod 10 moves drive rotating shaft 8 and does gyration in slotted hole 11; The centre of gyration place of said rotating shaft 8 is provided with protuberance 12, and said housing 4 is provided with the bearing holes 13 that can supply protuberance 12 to embed, and said rotating shaft 8 can be rotated in bearing holes 13 around its protuberance 12.
Above-mentioned first becket 16 and second becket, 17 materials are steel-brass or steel-tin bronze.
Above-mentioned metal bearing 15 can be sliding bearing or rolling bearing.
The utility model embodiment foregoing is explained as follows:
Breaking-closing operating mechanism 1 has well-known linkage and spring energy-storage mechanism and is used to provide the operating physical force of circuit breaker with separating brake and combined floodgate; One or several parallelly connected one pole breaking units 2, it is through backstay 3 and above-mentioned breaking-closing operating mechanism 1 location that mutually combines, and moves with the divide-shut brake of accepting breaking-closing operating mechanism 1 through the transmission leverage; Connecting rod 10 and backstay 3, each is made up of at least one metallic rod.
Said one pole breaking units 2, by constituting like the lower part at least, the housing 4 of the system of moulding that combines in opposite directions is used to hold remaining part; Mould the rotating shaft 8 of system, its protuberance 12 is supported on the housing 4 on the corresponding supporting part, be used for supporting and fixing moving contact 5, and through the connecting rod 10 of above-mentioned transmission and combining of hole 18, acceptance is moved from the divide-shut brake of breaking-closing operating mechanism 1; Moving contact 5 and fixed contact 6 are used for loaded current; Arc control device 7 are used for extinguishing arc.
Rotating shaft 8 has been adopted the metal sliding bearing structure with each junction of housing 4; Shown in accompanying drawing, bearing is divided into the bearing 15 that is fixed on the housing supporting part, is fixed in the metal axle sleeve 14 on rotating shaft 8 protuberances 12; Two parts adopt the metal material that helps attenuating friction reduction wearing and tearing each other to process respectively; As adopt steel-brass, steel-tin bronze material, and the technology of the embedding system of employing or other modes process one with corresponding parent, and difficult drop-off.
When adopting above-mentioned multipole breaker of plastic casing, guaranteed that the phase utmost point rotating shaft positioning accuracy between a plurality of one pole breaking units is consistent, improved the reliability that contacts between the dynamic/static contact; Secondly, the multipole breaker of plastic casing of the utility model through the protuberance 12 and bearing holes 13 location of said rotating shaft 8, has effectively improved the intensity of rotating shaft, and has guaranteed that the rotating shaft of each one pole breaking units rotates synchronously, increases useful life, strengthens the combined floodgate reliability.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the utility model.
Claims (1)
1. multipole breaker of plastic casing; Comprise breaking-closing operating mechanism (1) and at least two one pole breaking units (2) that are parallel together; This one pole breaking units (2) has the housing (4) that combines in opposite directions; Also comprise the moving contact (5), fixed contact (6) and the arc control device (7) that are installed in the said housing (4); This moving contact (5) is by rotating shaft (8) supporting, and the rotating shaft (8) of each one pole breaking units (2) connects through connecting rod (10), and this connecting rod (10) passes the slotted hole (11) of housing (4) upper curve shape; This connecting rod (10) at slotted hole (11) thus in move to drive rotating shaft (8) and do gyration; It is characterized in that: the centre of gyration place of said rotating shaft (8) is provided with protuberance (12); Said housing (4) is provided with the bearing holes (13) that can supply protuberance (12) to embed, and said rotating shaft (8) can be rotated in bearing holes (13) around its protuberance (12).
2. breaker of plastic casing according to claim 1 is characterized in that: the protuberance (12) of said rotating shaft (8) is provided with metal bearing (15), and bearing holes (13) internal fixation of said housing (4) has metal axle sleeve (14).
3. breaker of plastic casing according to claim 1 is characterized in that: protuberance (12) outer rim of said rotating shaft (8) is fixed with first becket (16), and bearing holes (13) internal fixation of said housing (4) has second becket (17).
4. breaker of plastic casing according to claim 2 is characterized in that: described metal bearing (15) can be sliding bearing or rolling bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205149226U CN202473785U (en) | 2011-12-12 | 2011-12-12 | Multipolar molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205149226U CN202473785U (en) | 2011-12-12 | 2011-12-12 | Multipolar molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473785U true CN202473785U (en) | 2012-10-03 |
Family
ID=46921928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205149226U Expired - Lifetime CN202473785U (en) | 2011-12-12 | 2011-12-12 | Multipolar molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473785U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496529A (en) * | 2011-12-12 | 2012-06-13 | 常熟开关制造有限公司(原常熟开关厂） | Multi-pole molded case circuit breaker |
| CN105140069A (en) * | 2014-01-26 | 2015-12-09 | 青岛歌尔声学科技有限公司 | Friction reduction sliding device of electronic equipment and electronic equipment |
| CN106128877A (en) * | 2016-06-30 | 2016-11-16 | 乐清市联合贸易有限公司 | Switching units, include the switching device of this unit and include the chopper of this device |
-
2011
- 2011-12-12 CN CN2011205149226U patent/CN202473785U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496529A (en) * | 2011-12-12 | 2012-06-13 | 常熟开关制造有限公司(原常熟开关厂） | Multi-pole molded case circuit breaker |
| CN105140069A (en) * | 2014-01-26 | 2015-12-09 | 青岛歌尔声学科技有限公司 | Friction reduction sliding device of electronic equipment and electronic equipment |
| CN106128877A (en) * | 2016-06-30 | 2016-11-16 | 乐清市联合贸易有限公司 | Switching units, include the switching device of this unit and include the chopper of this device |
| CN106128877B (en) * | 2016-06-30 | 2018-04-13 | 乐清市联合贸易有限公司 | The switching device of switching units including the unit and the breaker including the device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |