CN201359982Y - Multi-pole low-voltage rotation double-break molded case circuit breaker - Google Patents
Multi-pole low-voltage rotation double-break molded case circuit breaker Download PDFInfo
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- CN201359982Y CN201359982Y CNU2009200366332U CN200920036633U CN201359982Y CN 201359982 Y CN201359982 Y CN 201359982Y CN U2009200366332 U CNU2009200366332 U CN U2009200366332U CN 200920036633 U CN200920036633 U CN 200920036633U CN 201359982 Y CN201359982 Y CN 201359982Y
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- pole units
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- single pole
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- brace
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Abstract
A multi-pole low-voltage rotation double-break molded case circuit breaker belongs to the technical field of low-voltage apparatus. The circuit breaker comprises an operation mechanism, a plurality of single-pole units and a connecting mechanism, wherein, each single-pole unit comprises a housing, a pair of static contact modules and a pair of movable contact modules, the movable contact modules comprise contacts and rotors; the connecting mechanism comprises at least two connecting sheets and two supporting shafts, the two connecting sheets are placed between the adjacent single-pole units, first connection holes and second connection holes are respectively formed on both ends of the connecting sheets, and third connection holes are formed in the middle of the connecting sheets; first connecting shafts penetrate through the first connection holes of the connecting sheets, and are connected with the movable contact modules of the single-pole units; second connecting shafts penetrate through the connection holes of the connecting sheets, and are connected with movable contact modules of the single-pole units, and are connected with a lower connecting rod of the operation mechanism; the two supporting shafts penetrate through the third connection holes of the corresponding connecting sheets, and both ends of the supporting shafts are mounted on the housing near to the adjacent single-pole units. The circuit breaker with simple structure and convenient installation is favorable for enhancing the mechanical service life.
Description
Technical field
The utility model relates to a kind of breaker with double breaks and plastic case, and particularly a kind of multipolar low-voltage rotating dual-breakpoint breaker of plastic casing belongs to the low voltage electrical apparatus technology field.
Background technology
Breaker with double breaks and plastic case is multipolar low-voltage rotating dual-breakpoint breaker of plastic casing particularly, comprise operating mechanism, a plurality of single pole units and bindiny mechanism, each single pole units comprises shell, and be located at a pair of fixed contact and motive contact module in the shell respectively, motive contact module comprises moving contact and the rotor that is used to hold described moving contact with two moving contacts, a plurality of single pole units constitute a multipole circuit breaker side by side, bindiny mechanism is used to connect circuit breaker operation mechanism, and the rotor on each motive contact module is linked together, so that rotor is synchronized with the movement, can realizes the branch of moving contact and fixed contact and close action.
In the existing multipolar low-voltage rotating dual-breakpoint breaker of plastic casing, be used to connect circuit breaker operation mechanism, and the motive contact module that drives a plurality of single pole units rotate and finish close, the bindiny mechanism of sub-switching operation is being hinged on the circuit breaker operation mechanism side plate between two single pole units and by brace mostly.Concrete structure is by Chinese invention patent Granted publication CN1028935C, and name is called " multipole circuit breaker with single pole units " and discloses.The deficiency that this version exists is: at first, in a plurality of single pole units of circuit breaker, be provided with the circular cavity volume that is used to hold rotor, and two breakpoints of rotating dual-breakpoint are distributed in the cavity volume both sides symmetrically, for the identical and contact reliability of contact pressure that guarantees two breakpoints, need rotor accurately to be positioned at the center of cavity volume, and the said structure form is to be hinged on the operating mechanism side plate by brace, be that centre of rotor is a pin joint, and the operating mechanism side plate is erected on the single pole units, exist certain position deviation between the circular cavity volume center of pin joint and single pole units, can not guarantee effectively that rotor is positioned at the center of cavity volume; Secondly, bindiny mechanism is riveted on the side plate by minor axis, is a kind of cantilever beam structure, and have relatively high expectations the mechanical endurance of circuit breaker, closes for a long time, sub-switching operation causes the minor axis deflection deformation easily and cause mechanical breakdown.
Summary of the invention
Problem in view of above-mentioned existence, the purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, can make rotor be positioned the center of housing cavity volume and guarantee the multipolar low-voltage rotating dual-breakpoint breaker of plastic casing of the good and reliable in mechanical performance of sound contact contact stabilization.
The purpose of this utility model reaches like this, a kind of multipolar low-voltage rotating dual-breakpoint breaker of plastic casing, comprise operating mechanism 1, a plurality of single pole units 2 and bindiny mechanism 3, each single pole units 2 comprises shell 21,22, and be located at shell 21 respectively, a pair of fixed contact 23 and motive contact module 24 in 22, described motive contact module 24 comprises a moving contact 241 and a rotor 242 that is used to hold described moving contact 241 with two moving contacts, a plurality of single pole units constitute a multipole circuit breaker side by side, bindiny mechanism 3 is used for attended operation mechanism 1, and the rotor 242 on the motive contact module 24 of a plurality of single pole units 2 is linked together, so that rotor is synchronized with the movement, can realize the branch of moving contact 241 and fixed contact 23 and close action, described bindiny mechanism 3 comprises:
At least two braces 31, the two ends of described brace 31 have first connecting hole 311 and second connecting hole 312, and the centre has the 3rd connecting hole 313;
First connecting axle 32 runs through first connecting hole 311 of described brace 31, and is connected with the motive contact module 24 of described a plurality of single pole units 2;
Second connecting axle 33 runs through second connecting hole 312 of described brace 31, and is connected with the motive contact module 24 of described a plurality of single pole units 2, is connected with the lower link 11 of described operating mechanism 1 simultaneously;
At least two back shafts 34 run through the 3rd connecting hole 313 in the middle of the corresponding described brace 31 respectively, and the two ends of back shaft 34 are installed in respectively on adjacent single pole units 2 shell 21 and shell 22 close to each other.
Each brace 31 described in the utility model lays respectively between two adjacent single pole units 2 shell 21 and shell 22 close to each other, the both sides of operating mechanism 1.
The rotor 242 of each motive contact module 24 described in the utility model has first, second through hole 2421,2422 respectively, described first connecting axle 32 passes first through hole 2421 of described a plurality of rotor 242, and described second connecting axle 33 passes second through hole 2422 of described a plurality of rotor 242.
Shell described in the utility model 21,22 inside have the cavity volume 221 that holds rotor 242 rotations, offer on the shell wall body at corresponding cavity volume 221 centers and connect counterbore 211, being connected in the counterbore 211 of adjacent single pole units 2 shell 21 close to each other and shell 22 stretched at the two ends of described back shaft 34.
The utility model also is equipped with first, second block 35,36 that is used for brace 31 is played the role of positioning at the two ends of described each back shaft 34.
The utility model is because after adopting said structure, and one of advantage that has, simple in structure is easy for installation; Advantage two, can make the rotor on the motive contact module in each single pole units be positioned the center of shell cavity volume, thereby can guarantee that sound contact contact stabilization is good; Advantage three, each brace all has a back shaft to run through, and be installed between adjacent two single pole units shell close to each other, this installing and locating mode is the simply supported beam framework, and the back shaft of bindiny mechanism is not easy to produce deflection deformation, helps improving mechanical endurance.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A portion enlarged drawing among Fig. 1;
Fig. 3 is the assembling schematic diagram of bindiny mechanism described in the utility model 3 preferred embodiments;
Fig. 4 is the perspective view of bindiny mechanism described in the utility model 3 preferred embodiments;
Among the figure: 1. operating mechanism, 11. lower links; 2. single pole units, 21. shells, 211. connect counterbore, 22. shells, 221. cavity volumes, 23. fixed contacts, 24. motive contact modules, 241. moving contacts, 242. rotors, 2421. first through holes, 2422. second through holes; 3. bindiny mechanism, 31. braces, 311. first connecting holes, 312. second connecting holes, 313. the 3rd connecting holes, 32. first connecting axles, 33. second connecting axles, 34. back shafts, 35. first blocks, 36. second blocks.
Embodiment
By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to technical solutions of the utility model embodiment.
See also Fig. 1 and in conjunction with Fig. 2, Fig. 3 and Fig. 4, in the present embodiment, described multipolar low-voltage rotating dual-breakpoint breaker of plastic casing comprises operating mechanism 1, three single pole units 2 and bindiny mechanism 3, each single pole units 2 comprises shell 21,22, and be located at shell 21 respectively, a pair of fixed contact 23 and motive contact module 24 in 22, described motive contact module 24 comprises a moving contact 241 and a rotor 242 that is used to hold described moving contact 241 with two moving contacts, three single pole units constitute a three-pole breaker side by side, described operating mechanism 1 installing and locating is on the single pole units 2 of middle phase, described bindiny mechanism 3 is used for attended operation mechanism 1, and the rotor 242 on the motive contact module 24 of three single pole units 2 is linked together, so that rotor is synchronized with the movement, can realizes the branch of moving contact 241 and fixed contact 23 and close action.Described bindiny mechanism 3 comprises two braces 31, first connecting axle 32, second connecting axle 33 and two back shafts 34, described two braces 31 place respectively between adjacent two single pole units 2 shell 21 and shell 22 close to each other, the both sides of operating mechanism 1, the two ends of each brace 31 have first connecting hole 311 and second connecting hole 312, centre have the 3rd connecting hole 313; Described first connecting axle 32 runs through first connecting hole 311 of described two braces 31, and interts with first through hole 2421 on the rotor 242 of the motive contact module 24 of described three single pole units 2; Described second connecting axle 33 runs through second connecting hole 312 of described two braces 31, and intert with second through hole 2422 on the rotor 242 of the motive contact module 24 of described three single pole units 2, the middle part is connected with lower link 11 on the described operating mechanism 1 simultaneously; The two ends that described two back shafts 34 run through 313, two back shafts 34 of the 3rd connecting hole in the middle of corresponding two braces 31 respectively are installed in respectively on corresponding two single pole units 2 shell 21 and shell 22 close to each other.
Please continue to consult Fig. 1 and in conjunction with Fig. 3, Fig. 4, each single pole units 2 described in the utility model comprises shell 21,22, is combined to form an inner space by shell 21,22, a pair of fixed contact 23, a motive contact module 24 are installed in the space.Described shell 21,22 inner sides offer and are used to the cavity volume 221 that holds the rotor 242 of motive contact module 24 and rotor 242 can be rotated within it, offer on the shell wall body at corresponding cavity volume 221 centers and connect counterbore 211, on adjacent single pole units 2 shell 21,22 wall bodies close to each other two connect the two ends that counterbores 211 are used to install the back shaft 34 of bindiny mechanism 3.Described three single pole units 2 are proper alignment side by side, and the aperture of the connection counterbore 211 on each single pole units shell equates, and the axle center point-blank.The center of rotation of bindiny mechanism 3 is by shell 21,22 location of single pole units 2, motive contact module 24 is by bindiny mechanism 3 location, thus, moving contact 241 and fixed contact 23 all with the shell 21,22 of single pole units 2 as the installing and locating benchmark, their cooperation accuracy is improved, and helps guaranteeing having excellent contact stability between the sound contact.
Please continue to consult Fig. 3, Fig. 4, the brace 31 of bindiny mechanism 3 described in the utility model is run through by back shaft 34, the two ends of back shaft 34 are supported by adjacent single pole units 2 shells 21,22 close to each other, simultaneously, in order to guarantee the accurate location of brace 3 between two single pole units 2, prevent left and right sides slippage, also have additional first, second block 35,36 that mat plays the role of positioning at the two ends of back shaft 34 respectively.The installing and locating mode of above-mentioned bindiny mechanism 3 is the simply supported beam framework, and the structural stability height helps improving mechanical endurance.
Narrate course of action of the present utility model below in conjunction with each accompanying drawing: at first, operating mechanism 1 action drives lower link 11 actions, and lower link 11 is connected with second connecting axle 33 of described bindiny mechanism 3, therefore, lower link 11 drives bindiny mechanism 3 and rotates around it central support shaft 34 rotations.First connecting axle 32 of bindiny mechanism 3 is connected with the rotor 242 of second connecting axle 33 with the motive contact module 24 of three single pole units 2, therefore, bindiny mechanism 3 rotates, the motive contact module 24 that can drive three single pole units 2 is synchronized with the movement, and realizes the branch of three-pole breaker moving contact 241 and fixed contact 23 and closes action with this.
Claims (5)
1, a kind of multipolar low-voltage rotating dual-breakpoint breaker of plastic casing, comprise operating mechanism (1), a plurality of single pole units (2) and bindiny mechanism (3), each single pole units (2) comprises shell (21,22), and be located at shell (21 respectively, 22) Nei a pair of fixed contact (23) and motive contact module (24), described motive contact module (24) comprises that one has the moving contact (241) of two moving contacts and the rotor (242) that is used to hold described moving contact (241), a plurality of single pole units constitute a multipole circuit breaker side by side, bindiny mechanism (3) is used for attended operation mechanism (1), and the rotor (242) on the motive contact module (24) of a plurality of single pole units (2) is linked together, so that rotor is synchronized with the movement, can realize the branch of moving contact (241) and fixed contact (23) and close action, it is characterized in that described bindiny mechanism (3) comprising:
At least two braces (31), the two ends of described brace (31) have first connecting hole (311) and second connecting hole (312), and the centre has the 3rd connecting hole (313);
First connecting axle (32) runs through first connecting hole (311) of described brace (31), and is connected with the motive contact module (24) of described a plurality of single pole units (2);
Second connecting axle (33) runs through second connecting hole (312) of described brace (31), and is connected with the motive contact module (24) of described a plurality of single pole units (2), is connected with the lower link (11) of described operating mechanism (1) simultaneously;
At least two back shafts (34), run through corresponding middle the 3rd connecting hole (313) of described brace (31) respectively, it is characterized in that the two ends of described back shaft (34) are installed in respectively on adjacent single pole units (2) shell (21) and shell (22) close to each other.
2, multipolar low-voltage rotating dual-breakpoint breaker of plastic casing according to claim 1 is characterized in that described each brace (31) lays respectively between adjacent two single pole units (2) shell (21) and shell (22) close to each other, the both sides of operating mechanism (1).
3, multipolar low-voltage rotating dual-breakpoint breaker of plastic casing according to claim 1, the rotor (242) that it is characterized in that described each motive contact module (24) has first, second through hole (2421,2422) respectively, described first connecting axle (32) passes first through hole (2421) of described a plurality of rotor (242), and described second connecting axle (33) passes second through hole (2422) of described a plurality of rotor (242).
4, multipolar low-voltage rotating dual-breakpoint breaker of plastic casing according to claim 1, it is characterized in that described shell (21,22) inside has the cavity volume (221) that holds rotor (242) rotation, offer connection counterbore (211) on shell (21, the 22) wall body at corresponding cavity volume (221) center, being connected in the counterbore (211) of adjacent single pole units (2) shell (21) close to each other and shell (22) stretched at the two ends of described back shaft (34).
5, multipolar low-voltage rotating dual-breakpoint breaker of plastic casing according to claim 1 is characterized in that also being equipped with at the two ends of described each back shaft (34) and is used for first, second block (35,36) that brace (31) is played the role of positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200366332U CN201359982Y (en) | 2009-02-26 | 2009-02-26 | Multi-pole low-voltage rotation double-break molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200366332U CN201359982Y (en) | 2009-02-26 | 2009-02-26 | Multi-pole low-voltage rotation double-break molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201359982Y true CN201359982Y (en) | 2009-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200366332U Expired - Lifetime CN201359982Y (en) | 2009-02-26 | 2009-02-26 | Multi-pole low-voltage rotation double-break molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201359982Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142340A (en) * | 2010-02-01 | 2011-08-03 | 上海良信电器股份有限公司 | Multi-electrode rotary double-breakpoint circuit breaker with plastic shell |
| CN102456515A (en) * | 2010-10-20 | 2012-05-16 | 北京人民电器厂有限公司 | Multi-break plastic-shell type circuit breaker |
| CN105023818A (en) * | 2015-08-11 | 2015-11-04 | 浙江奔一电气有限公司 | Double-break circuit breaker |
-
2009
- 2009-02-26 CN CNU2009200366332U patent/CN201359982Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142340A (en) * | 2010-02-01 | 2011-08-03 | 上海良信电器股份有限公司 | Multi-electrode rotary double-breakpoint circuit breaker with plastic shell |
| CN102456515A (en) * | 2010-10-20 | 2012-05-16 | 北京人民电器厂有限公司 | Multi-break plastic-shell type circuit breaker |
| CN102456515B (en) * | 2010-10-20 | 2014-09-24 | 北京人民电器厂有限公司 | Multi-break plastic-shell type circuit breaker |
| CN105023818A (en) * | 2015-08-11 | 2015-11-04 | 浙江奔一电气有限公司 | Double-break circuit breaker |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091209 |