CN104900456A - Moulded case circuit breaker and tripping mechanism thereof - Google Patents
Moulded case circuit breaker and tripping mechanism thereof Download PDFInfo
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- CN104900456A CN104900456A CN201510223637.1A CN201510223637A CN104900456A CN 104900456 A CN104900456 A CN 104900456A CN 201510223637 A CN201510223637 A CN 201510223637A CN 104900456 A CN104900456 A CN 104900456A
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- coil
- bimetal leaf
- breaker
- moving contact
- tripping mechanism
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Abstract
The invention discloses a moulded case circuit breaker and a tripping mechanism thereof. The moulded case circuit breaker mainly solves the problem that magnetic tripping is unreliable when the existing moulded case circuit breaker is short-circuited. The moulded case circuit breaker is characterized in that a coil rack is arranged at one end of a bimetallic strip, a coil is wound outside the coil rack, one end of the coil is connected with a moving contact by a first soft connector, and the other end of the coil is connected with a heating element and connected with the moving contact by a second soft connector. The moulded case circuit breaker has the advantages that the coil rack and the coil are arranged on the bimetallic strip, so that the magnetic field can be strengthened, and tripping is more reliable in the short-circuit process.
Description
Technical field
The present invention relates to a kind of circuit breaker, be specifically related to a kind of breaker of plastic casing and tripping mechanism thereof.
Background technology
Breaker of plastic casing is protective device important in low-voltage distribution mechanism, and in low-voltage distribution mechanism, it plays connection, disjunction running current, has simultaneously and provides short-circuit protection, overload protection etc. to AC network circuit and power consumption equipment.
Usually, the thermal tripping mechanism of breaker of plastic casing is made up of bimetal leaf, heater element, silently armature, sound armature, draw bar.When being greater than rated current by electric current and be less than certain predetermined current standard scope, bimetal leaf heated bending, and promote draw bar, realize tripping separating brake; When electricity consumption line short, electric current can become large instantaneously, reaches in critical field, produces magnetic field, attracts draw bar action, realizes tripping separating brake.
But the tripping mechanism of existing structure is when short circuit, often need larger electric current, could produce enough strong magnetic field, realize reliably threading off, in small area analysis circuit, often need multiple series connection could realize reliable dropout, Interruption is bad.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides breaker of plastic casing and tripping mechanism thereof, when solving existing breaker of plastic casing short circuit, magnetic is threaded off insecure problem.
The technical solution adopted in the present invention: a kind of tripping mechanism of breaker of plastic casing, comprises connecting plate, thermal element, bimetal leaf, static gag bit, moving contact; Described bimetal leaf one end is provided with bobbin, and described bobbin is around with coil, and described coil wherein one end is flexible coupling by first and is connected with moving contact, and the other end of described coil is connected with thermal element, and is flexible coupling by second and is connected with moving contact.
Described bobbin, bimetal leaf, thermal element, static gag bit are integrated by riveting.
Described connecting plate and thermal element are by being welded to connect.
Described first being flexible coupling, second being flexible coupling all by being welded to connect.
The other end of described bimetal leaf is provided with adjusting bolt.
A kind of breaker of plastic casing, comprises pedestal and is arranged on operating mechanism, the tripping mechanism in pedestal; Described tripping mechanism, comprises connecting plate, thermal element, bimetal leaf, static gag bit, moving contact; Described bimetal leaf is provided with bobbin, and described bobbin is around with coil, and described coil wherein one end is flexible coupling by first and is connected with moving contact, and the other end of described coil is connected with thermal element, and is flexible coupling by second and is connected with moving contact.
Described operating mechanism comprises handle, tripping, snap close, draw bar, and described draw bar is rotatable to be located in pedestal, and its lower end is provided with the moving armature corresponding with bobbin, and upper end is corresponding with the other end of bimetal leaf.
The invention has the beneficial effects as follows: adopt above scheme, bimetal leaf is arranged bobbin and coil, can strengthen magnetic field, more reliable during dropout, performance is better, even if in the circuit of small area analysis, also can reliably thread off during short circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention tripping mechanism.
Fig. 2 is the structural representation of embodiment of the present invention breaker of plastic casing.
Fig. 3 is the structural representation of the embodiment of the present invention.
1-connecting plate in figure, 2-thermal element, 3-bimetal leaf, 4-static gag bit, 5-bobbin, 6-moving contact, 7-coil, 8-first is flexible coupling, and 9-second is flexible coupling, 10 adjusting bolts, 11-pedestal, 12-handle, 13-tripping, 14-snap close, 15-draw bar, 16-moving armature.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated:
As shown in Figure 1, a kind of tripping mechanism of breaker of plastic casing, comprises connecting plate 1, thermal element 2, bimetal leaf 3, static gag bit 4, moving contact 6; Described bimetal leaf 3 one end is provided with bobbin 5, and the other end of described bimetal leaf 3 is provided with adjusting bolt 10, and adjusting bolt 10 can carry out corresponding adjustment according to the size of overload current, expands the scope of application of circuit breaker; Described bobbin 5 is around with coil 7, and described coil 7 wherein one end is flexible coupling by first and 8 is connected with moving contact 6, and the other end of described coil 7 is connected with thermal element 2, and is flexible coupling by second and 9 is connected with moving contact 6.Bimetal leaf is arranged bobbin and coil, can strengthen magnetic field, more reliable during dropout, performance is better, even if in the circuit of small area analysis, also can reliably thread off during short circuit.
Wherein, described bobbin 5, bimetal leaf 3, thermal element 2, static gag bit 4 are integrated by riveting, and described connecting plate 1 and thermal element 2 are by being welded to connect, and described first is flexible coupling 8, second is flexible coupling 9 all by being welded to connect, not only technique is simple, processes also convenient.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of breaker of plastic casing, comprises pedestal 11 and is arranged on operating mechanism, the tripping mechanism in pedestal 11; Described tripping mechanism, comprises connecting plate 1, thermal element 2, bimetal leaf 3, static gag bit 4, moving contact 6; Described bimetal leaf 3 is provided with bobbin 5, and described bobbin 5 is around with coil 7, and described coil 7 wherein one end is flexible coupling by first and 8 is connected with moving contact 6, and the other end of described coil 7 is connected with thermal element 2, and is flexible coupling by second and 9 is connected with moving contact 6; Described operating mechanism comprises handle 12, tripping 13, snap close 14, draw bar 15, and described draw bar 15 is rotatable to be located in pedestal 11, and its lower end is provided with the moving armature 16 corresponding with bobbin 5, and upper end is corresponding with the other end of bimetal leaf 3.
When being greater than rated current by electric current and be less than certain predetermined current standard scope, bimetal leaf heated bending, and promote draw bar, realize tripping separating brake; When electricity consumption line short, electric current can become large instantaneously, reaches in critical field, produces magnetic field, attracts the moving armature of draw bar lower end, realizes tripping separating brake; Owing to bimetal leaf being arranged bobbin and coil, can strengthen magnetic field, more reliable during dropout, performance is better, even if in the circuit of small area analysis, also can reliably thread off during short circuit.
Claims (7)
1. a tripping mechanism for breaker of plastic casing, comprises connecting plate (1), thermal element (2), bimetal leaf (3), static gag bit (4), moving contact (6);
It is characterized in that: described bimetal leaf (3) one end is provided with bobbin (5), described bobbin (5) is around with coil (7), described coil (7) wherein one end by first be flexible coupling (8) be connected with moving contact (6), the other end of described coil (7) is connected with thermal element (2), and by second be flexible coupling (9) be connected with moving contact (6).
2. the tripping mechanism of breaker of plastic casing according to claim 1, is characterized in that: described bobbin (5), bimetal leaf (3), thermal element (2), static gag bit (4) are integrated by riveting.
3. the tripping mechanism of breaker of plastic casing according to claim 1, is characterized in that: described connecting plate (1) and thermal element (2) are by being welded to connect.
4. the tripping mechanism of breaker of plastic casing according to claim 1, is characterized in that: described first being flexible coupling (8), second being flexible coupling (9) all by being welded to connect.
5. the tripping mechanism of breaker of plastic casing according to claim 1, is characterized in that: the other end of described bimetal leaf (3) is provided with adjusting bolt (10).
6. a breaker of plastic casing, the operating mechanism, the tripping mechanism that comprise pedestal (11) and be arranged in pedestal (11); Described tripping mechanism, comprises connecting plate (1), thermal element (2), bimetal leaf (3), static gag bit (4), moving contact (6);
It is characterized in that: described bimetal leaf (3) is provided with bobbin (5), described bobbin (5) is around with coil (7), described coil (7) wherein one end by first be flexible coupling (8) be connected with moving contact (6), the other end of described coil (7) is connected with thermal element (2), and by second be flexible coupling (9) be connected with moving contact (6).
7. breaker of plastic casing according to claim 6, it is characterized in that: described operating mechanism comprises handle (12), tripping (13), snap close (14), draw bar (15), described draw bar (15) is rotatable to be located in pedestal (11), its lower end is provided with the moving armature (16) corresponding with bobbin (5), and upper end is corresponding with the other end of bimetal leaf (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223637.1A CN104900456A (en) | 2015-05-06 | 2015-05-06 | Moulded case circuit breaker and tripping mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223637.1A CN104900456A (en) | 2015-05-06 | 2015-05-06 | Moulded case circuit breaker and tripping mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104900456A true CN104900456A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510223637.1A Pending CN104900456A (en) | 2015-05-06 | 2015-05-06 | Moulded case circuit breaker and tripping mechanism thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104900456A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424883A (en) * | 2017-06-16 | 2017-12-01 | 罗格朗低压电器（无锡）有限公司 | A kind of Thermomagnetic type current protection system for breaker of plastic casing |
| CN109950104A (en) * | 2017-12-21 | 2019-06-28 | 施耐德电器工业公司 | Thermal-magnetic trip component and electrical switching unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143022B1 (en) * | 1983-10-21 | 1988-06-01 | Merlin Gerin | Thermal and magnetic circuit breaker tripping mechanism |
| CN2870150Y (en) * | 2005-09-27 | 2007-02-14 | 宁波奇乐电器实业总公司 | Over-current releasing device of low-voltage circuit breaker |
| CN101004987A (en) * | 2006-12-15 | 2007-07-25 | 大全集团有限公司 | Break tripping device |
| CN203386690U (en) * | 2013-06-07 | 2014-01-08 | 江苏大全凯帆电器股份有限公司 | A low-voltage breaker buckle-releasing apparatus with reinforced insulation |
| CN203415519U (en) * | 2013-08-08 | 2014-01-29 | 宁波奇乐电气集团有限公司 | Thermal electromagnetic release of breaker |
| CN103681146A (en) * | 2013-12-10 | 2014-03-26 | 德力西电气有限公司 | Miniature circuit breaker |
| CN204596735U (en) * | 2015-05-06 | 2015-08-26 | 温州高能电气有限公司 | Breaker of plastic casing and tripping mechanism thereof |
-
2015
- 2015-05-06 CN CN201510223637.1A patent/CN104900456A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143022B1 (en) * | 1983-10-21 | 1988-06-01 | Merlin Gerin | Thermal and magnetic circuit breaker tripping mechanism |
| CN2870150Y (en) * | 2005-09-27 | 2007-02-14 | 宁波奇乐电器实业总公司 | Over-current releasing device of low-voltage circuit breaker |
| CN101004987A (en) * | 2006-12-15 | 2007-07-25 | 大全集团有限公司 | Break tripping device |
| CN203386690U (en) * | 2013-06-07 | 2014-01-08 | 江苏大全凯帆电器股份有限公司 | A low-voltage breaker buckle-releasing apparatus with reinforced insulation |
| CN203415519U (en) * | 2013-08-08 | 2014-01-29 | 宁波奇乐电气集团有限公司 | Thermal electromagnetic release of breaker |
| CN103681146A (en) * | 2013-12-10 | 2014-03-26 | 德力西电气有限公司 | Miniature circuit breaker |
| CN204596735U (en) * | 2015-05-06 | 2015-08-26 | 温州高能电气有限公司 | Breaker of plastic casing and tripping mechanism thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424883A (en) * | 2017-06-16 | 2017-12-01 | 罗格朗低压电器（无锡）有限公司 | A kind of Thermomagnetic type current protection system for breaker of plastic casing |
| CN109950104A (en) * | 2017-12-21 | 2019-06-28 | 施耐德电器工业公司 | Thermal-magnetic trip component and electrical switching unit |
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Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |