CN202721095U - Large current miniature circuit breaker - Google Patents
Large current miniature circuit breaker Download PDFInfo
- Publication number
- CN202721095U CN202721095U CN201220418821.3U CN201220418821U CN202721095U CN 202721095 U CN202721095 U CN 202721095U CN 201220418821 U CN201220418821 U CN 201220418821U CN 202721095 U CN202721095 U CN 202721095U
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- CN
- China
- Prior art keywords
- housing
- yoke
- armature
- circuit breaker
- buckle frame
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- 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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Abstract
The utility model relates to a large current miniature circuit breaker, comprising a housing, and the housing is provided with an operating mechanism, a plastic lock catch support, a tripping mechanism, a moving contact, a fixed contact, an arc extinguish chamber, and a bimetallic strip inside. Two sides in the housing are respectively provided with a binding post. The plastic lock catch support is hinged in the housing, and the plastic lock catch support comprises a lock catch portion which cooperates with the operating mechanism and an instantaneous tripping portion which cooperates with the tripping mechanism. The tripping mechanism comprises an electro-magnetic induction element and an armature. The electro-magnetic induction element and the bimetallic strip are arranged in cooperation. The armature is fixedly arranged on the instantaneous tripping portion of the plastic lock catch support and is arranged in a cooperating mode with the electro-magnetic induction element. The large current miniature circuit breaker is simple in structure, relatively low in cost, and has effects of greatly improving breaking capacity and rated current.
Description
Technical field
The utility model relates to field of circuit breakers, is specifically related to a kind of heavy-current micro circuit breaker.
Background technology
Miniature circuit breaker, generally include housing, be provided with operating mechanism, plastic latch buckle frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf in the housing, both sides in the housing also are respectively arranged with binding post, bimetal leaf one end is connected with the binding post conducting of a side in the housing, the bimetal leaf other end is connected with the moving contact conducting by brush wire, the plastic latch buckle frame is hinged to be arranged in the housing, and the plastic latch buckle frame comprises the latch part that matches with operating mechanism and the instantaneous trip section that matches with tripping mechanism.Traditional miniature circuit breaker, its tripping mechanism adopts magnetictrip usually, and the coil of magnetictrip is connected with the bimetal leaf conduction, and circuit breaker is when normal condition, the plastic latch buckle frame keeps operating mechanism under the effect of back-moving spring, so that moving contact and fixed contact are conducted; When short circuit current passes through the coil of bimetal leaf and magnetictrip, the magnetic field force that coil produces overcomes the reaction spring adhesive armature and hits draw bar, draw bar drive plastic latch buckle frame overcomes action of reset spring power and rotates, thereby so that operating mechanism and the tripping of plastic latch buckle frame phase, final so that moving contact and fixed contact are separated and cut off circuit.Traditional miniature circuit breaker, tripping mechanism adopts magnetictrip, and magnetictrip is arranged on the top of arc control device usually, because magnetictrip has larger volume, and miniature circuit breaker is subject to the overall volume restriction, thereby can only reduce the volume of arc control device, thereby has limited its breaking capacity and rated current, traditional outer casing width is the miniature circuit breaker of 18mm, and its rated current only has 63A.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model be to provide a kind of simple in structure, cost is lower and greatly improve the miniature circuit breaker of breaking capacity and rated current.
For achieving the above object, the utility model provides following technical scheme: a kind of heavy-current micro circuit breaker, comprise housing, be provided with operating mechanism in the housing, the plastic latch buckle frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf, both sides in the housing also are respectively arranged with binding post, described plastic latch buckle frame is hinged to be arranged in the housing, described plastic latch buckle frame comprises the latch part that matches with operating mechanism and the instantaneous trip section that matches with tripping mechanism, described tripping mechanism comprises electromagnetic induction element and armature, the setting that matches with bimetal leaf of described electromagnetic induction element, described armature are fixedly installed on the instantaneous trip section of described plastic latch buckle frame and the setting that matches with electromagnetic induction element.
The utility model further arranges: described electromagnetic induction element is set to yoke, and described yoke is fixedly installed in the housing, and described bimetal leaf passes the yoke setting, and corresponding armature one side of described yoke is the opening setting.
The utility model further arranges: described yoke and bimetal leaf are fixed by spot-welded on.
The utility model further arranges: corresponding yoke one side of the instantaneous trip section of described plastic latch buckle frame is provided with the projection that protrudes towards the yoke direction, and described armature is set on the described projection, and described projection top is provided with the positive stop lug boss that prevents that armature breaks away from.
Technical solutions of the utility model have been cancelled the magnetictrip of traditional miniature circuit breaker, so that the miniature circuit breaker structure is simpler, and reduced production cost, and effectively reduced internal volume, just can increase the volume of arc control device, thereby improved breaking capacity and rated current.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the utility model example structure figure;
Fig. 2 is the A section enlarged drawing of Fig. 1;
Fig. 3 is plastic latch buckle frame example structure figure of the present utility model.
Embodiment
Referring to accompanying drawing 1 to accompanying drawing 3, the disclosed heavy-current micro circuit breaker of the utility model, comprise housing 1, be provided with operating mechanism 2 in the housing 1, plastic latch buckle frame 3, tripping mechanism, moving contact 4, fixed contact 5, arc control device 6 and bimetal leaf 7, operating mechanism 2 comprises the handle 201 that is the interlock setting, tripping 202, indication lever 203 and small rack 204, small rack 204 is interlock setting with moving contact 4, both sides in the housing 1 also are respectively arranged with binding post 8, bimetal leaf 7 one ends are connected with binding post 8 conductings of a side in the housing 1 by terminal block 9 and flexible link 10, bimetal leaf 7 other ends are connected with moving contact 4 conductings by brush wire 11, described plastic latch buckle frame 3 hinged being arranged in the housing 1, described plastic latch buckle frame 3 comprises the latch part 301 that matches with operating mechanism 2 and the instantaneous trip section 302 that matches with tripping mechanism, the setting that matches with the latch part 301 of plastic latch buckle frame 3 of tripping 202 1 ends of operating mechanism 2, described tripping mechanism comprises electromagnetic induction element 12 and armature 13, the setting that matches with bimetal leaf 7 of described electromagnetic induction element 12, described armature 13 are fixedly installed on the instantaneous trip section 302 of described plastic latch buckle frame 3 and the setting that matches with electromagnetic induction element 13.So arrange, when circuit breaker during in normal condition, plastic latch buckle frame 3 keeps operating mechanism 2 under the effect of back-moving spring, so that moving contact 4 and fixed contact 5 are conducted; When short circuit current process bimetal leaf 7, electromagnetic induction element 12 produces electromagnetic induction and produces magnetic field, thereby the armature 13 in the instantaneous trip section 302 that is fixed on plastic latch buckle frame 3 is produced suction, when the action of reset spring power of customer service plastic latch buckle frame 3, plastic latch buckle frame 3 rotates, thereby so that the latch part 301 of tripping 202 and plastic latch buckle frame 3 is separated, and then indicate lever 203 and small rack 204 to link, so that small rack 204 makes moving contact 4 generation actions disconnect mutually with fixed contact 5.
Present embodiment electromagnetic induction element 12 preferably is set to yoke, and described yoke is fixedly installed in the housing 1, and described bimetal leaf 7 passes the yoke setting, and corresponding armature 13 1 sides of described yoke are the opening setting.So arrange when short circuit current process bimetal leaf 7, yoke produces magnetic field so that armature 13 is produced suction.
The utility model yoke can adopt multitude of different ways to be fixed in the housing, as directly being fixedly connected with housing 1, but considers the performance requirement of housing 1, and present embodiment is preferred, and described yoke and bimetal leaf 7 are fixed by spot-welded on.
The utility model armature 13 can fix by the instantaneous trip section 302 of multitude of different ways and plastic latch buckle frame 3, instantaneous trip section 302 such as armature 13 and plastic latch buckle frame 3 pastes fixing mutually, or armature 13 directly is coated on the instantaneous trip section 302 of plastic latch buckle frame 3, the steadiness that the instantaneous trip section 302 of the simplification of structure and armature 13 and plastic latch buckle frame 3 of considering fixes, present embodiment is preferred, instantaneous trip section 302 corresponding yoke one sides of described plastic latch buckle frame 3 are provided with the projection that protrudes towards the yoke direction, described armature 13 is set on the described projection, and described projection top is provided with the positive stop lug boss 303 that prevents that armature 13 breaks away from.
Technical solutions of the utility model have been cancelled the magnetictrip of traditional miniature circuit breaker, so that the miniature circuit breaker structure is simpler, and reduced production cost, and effectively reduced internal volume, just can increase the volume of arc control device 6, thereby improved breaking capacity and rated current.
Claims (4)
1. heavy-current micro circuit breaker, comprise housing, be provided with operating mechanism in the housing, the plastic latch buckle frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf, both sides in the housing also are respectively arranged with binding post, described plastic latch buckle frame is hinged to be arranged in the housing, described plastic latch buckle frame comprises the latch part that matches with operating mechanism and the instantaneous trip section that matches with tripping mechanism, it is characterized in that: described tripping mechanism comprises electromagnetic induction element and armature, the setting that matches with bimetal leaf of described electromagnetic induction element, described armature are fixedly installed on the instantaneous trip section of described plastic latch buckle frame and the setting that matches with electromagnetic induction element.
2. heavy-current micro circuit breaker according to claim 1, it is characterized in that: described electromagnetic induction element is set to yoke, described yoke is fixedly installed in the housing, and described bimetal leaf passes the yoke setting, and corresponding armature one side of described yoke is the opening setting.
3. heavy-current micro circuit breaker according to claim 2, it is characterized in that: described yoke and bimetal leaf are fixed by spot-welded on.
4. according to claim 1 and 2 or 3 described heavy-current micro circuit breakers, it is characterized in that: corresponding yoke one side of the instantaneous trip section of described plastic latch buckle frame is provided with the projection that protrudes towards the yoke direction, described armature is set on the described projection, and described projection top is provided with the positive stop lug boss that prevents that armature breaks away from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220418821.3U CN202721095U (en) | 2012-08-22 | 2012-08-22 | Large current miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220418821.3U CN202721095U (en) | 2012-08-22 | 2012-08-22 | Large current miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202721095U true CN202721095U (en) | 2013-02-06 |
Family
ID=47622907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220418821.3U Expired - Lifetime CN202721095U (en) | 2012-08-22 | 2012-08-22 | Large current miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202721095U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820182A (en) * | 2012-08-22 | 2012-12-12 | 温州市新蓝天电器有限公司 | Large-current miniature circuit breaker |
| CN106783437A (en) * | 2017-01-20 | 2017-05-31 | 温州市新蓝天电器有限公司 | A kind of breaker |
| CN108054059A (en) * | 2017-12-28 | 2018-05-18 | 温州市新蓝天电器有限公司 | A kind of breaker with separation type lock buckle tripping device |
-
2012
- 2012-08-22 CN CN201220418821.3U patent/CN202721095U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820182A (en) * | 2012-08-22 | 2012-12-12 | 温州市新蓝天电器有限公司 | Large-current miniature circuit breaker |
| CN106783437A (en) * | 2017-01-20 | 2017-05-31 | 温州市新蓝天电器有限公司 | A kind of breaker |
| CN106783437B (en) * | 2017-01-20 | 2018-09-07 | 温州市新蓝天电器有限公司 | A kind of breaker |
| CN108054059A (en) * | 2017-12-28 | 2018-05-18 | 温州市新蓝天电器有限公司 | A kind of breaker with separation type lock buckle tripping 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: 20130206 |
|
| CX01 | Expiry of patent term |