CN103903919A - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN103903919A CN103903919A CN201410094006.XA CN201410094006A CN103903919A CN 103903919 A CN103903919 A CN 103903919A CN 201410094006 A CN201410094006 A CN 201410094006A CN 103903919 A CN103903919 A CN 103903919A
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- connecting portion
- circuit breaker
- tripping
- iron core
- arc
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Abstract
The invention relates to a small circuit breaker. The small circuit breaker mainly solves the problems that because an existing miniature circuit breaker is limited by the mounting structure, the size is increased, the width of a shell is increased, and the flexibility is lowered. The miniature circuit breaker comprises a shell, a handle, an operating mechanism, a tripping mechanism and an arc extinguishing chamber. The operating mechanism comprises a jump buckle, a lock catch, a contact support and a movable contact. An opening groove is formed in the contact support, a first hinge pin and a second hinge pin are arranged in the opening groove, the jump buckle is hinged to the first hinge pin, the lock catch is hinged to the second hinge pin, the movable contact and the contact support are connected in a riveted mode, the lock catch is flush with the surface of the contact support, the jump buckle is lower than the upper surface of the lock catch, and a blocking sheet which extends outwards and is matched with the clamping position of the jump buckle is arranged on the upper surface of the lock catch. Because a compact mounting mode is adopted for the operating mechanism of the circuit breaker and the lock catch and the jump buckle are both installed in the plane of the contact support, the height formed by stacking and matching is effectively reduced, the structure is more compact, the thickness of the circuit breaker can be reduced to 9 mm, and the flexibility of the product is improved.
Description
Technical field
The present invention relates to a kind of low-voltage electrical apparatus, refer in particular to a kind of miniature circuit breaker.
Background technology
at present, the miniature circuit breaker on market, because operating mechanism mounting structure is limit, causes inner volume to increase, thereby the thickness of Shell of circuit breaker is increased, and causes the width of housing to increase, thereby the flexibility of product is reduced, and makes troubles to use.In addition, when arc extinguishing, adopt the magnetic blow-out principle of arc striking piece to carry out arc extinguishing, utilize the effect in magnetic field to make arc extinction, magnetic field is produced by breaking current itself conventionally, electric arc is blown in arc quenching plate slit by magnetic field, and makes it elongation, cooling, until finally extinguish, arc striking piece is that one end is connected with arc control device under normal circumstances, therefore the other end is connected with bimetal leaf, does not adopt around structure,, the intensity in magnetic field is lower, the effect of magnetic blow-out is poor, thereby makes arc extinguishing Efficiency Decreasing, affects the serviceability of product.
summary of the invention
In order to overcome deficiency and the defect in background technology, the invention provides a kind of tripping mechanism of miniature circuit breaker, solve existing miniature circuit breaker because mounting structure is limit, volume increases, cause the width of housing to increase, thereby the flexibility of product is reduced, make troubles to use.
Technical scheme of the present invention is: a kind of miniature circuit breaker, comprise housing, handle, operating mechanism, tripping mechanism and arc control device, described operating mechanism comprises tripping, snap close, contact is supported and moving contact, described handle is connected with tripping by U-shaped bar, described tripping is articulated with contact and supports, described snap close and tripping match, described contact support is provided with open slot, in described open slot, be provided with the first bearing pin and the second bearing pin, described tripping is articulated with on the first bearing pin, described snap close is articulated with on the second bearing pin, described moving contact is riveted mutually with contact support, and the surface that the upper surface of described snap close and described contact are supported maintains an equal level, the upper surface of described tripping is lower than the upper surface of described snap close, the upper surface of described snap close be provided with protruding and with the catch of described tripping clamping matching.
Also comprise contact mechanism, arc striking piece, and bimetal leaf, one end of described arc striking piece is the leading-in end being connected with arc control device, the other end of described arc striking piece is the link being connected with bimetal leaf, between described leading-in end and link, be connected by increasing magnetic portion, described increasing magnetic portion is around structure, described housing is provided with annular slot, described increasing magnetic portion snaps in described annular slot, and described increasing magnetic portion is " triangle " structure, described increasing magnetic portion comprises the first connecting portion and the second connecting portion that are fixedly connected with, described the first connecting portion is fixedly connected with leading-in end, described the second connecting portion is fixedly connected with link.
The downside of described the first connecting portion is provided with breach, one end of described the second connecting portion is connected with the first connecting portion, the other end is connected with link through breach, and described the first connecting portion is connected with leading-in end one, described the second connecting portion is connected with link one, and described the first connecting portion is fixedly connected with the second connecting portion.
Described housing is provided with the striking muscle of some certain intervals of being separated by, one end of described striking muscle is the arc end corresponding with contact mechanism, the other end is the release end corresponding with arc control device, described arc end is linear structure, described release end is arcuate structure, between described some striking muscle for being uniformly distributed.
Described tripping mechanism comprises iron core, yoke and coil, described iron core comprises static iron core and moving iron core, described static iron core is installed in yoke, described coil winding is in the periphery of static iron core, described moving iron core can be axially movablely located at the inner side of static iron core, described yoke comprise by the first vertical portion that is positioned at both sides, the second vertical portion and be positioned in the middle of and form for the connecting portion that connects the first vertical portion, the second vertical portion, the two ends of described static iron core form with described the first vertical portion, the second vertical portion integrated punching respectively.
Beneficial effect of the present invention: because the operating mechanism of this miniature circuit breaker adopts the mounting means of compact, snap close and tripping are arranged in the plane of contact support simultaneously, effectively reduce stack and coordinate the height forming, structure is compacter, thereby make the thickness of circuit breaker can be reduced to 9mm, improve the flexibility of product.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of another angle of the present invention.
Fig. 3 is the structure enlarged drawing at A place in Fig. 1 of the present invention.
Fig. 4 is the structural representation of arc striking piece in the present invention.
Fig. 5 is structural representation of the present invention.
Fig. 6 is the structural representation at B place in Fig. 5 of the present invention.
Fig. 7 is the structural representation of tripping mechanism in the present invention.
In figure, housing 1, contact mechanism 2, arc striking piece 3, leading-in end 31, link 32, bimetal leaf 4, arc control device 5, increase magnetic portion 6, the first connecting portion 61, the second connecting portions 62, breach 7, striking muscle 8, arc end 81, discharges end 82, annular slot 9, iron core 10,111, the second vertical portions 112, yoke 11, the first vertical portion, connecting portion 113, coil 12, handle 13, tripping 14, snap close 15, contact supports 16, moving contact 17, U-shaped bar 18, open slot 19, the first bearing pin 20, the second bearing pins 21, catch 22.
Embodiment
For accompanying drawing, embodiments of the invention are described further below:
As shown in the figure, a kind of miniature circuit breaker, comprise housing 1, handle 13, operating mechanism, tripping mechanism and arc control device 5, described operating mechanism comprises tripping 14, snap close 15, contact support 16 and moving contact 17, described handle 13 is connected with tripping 14 by U-shaped bar 18, described tripping 14 is articulated with contact and supports on 16, described snap close 15 and tripping 14 match, described contact support 16 is provided with open slot 19, in described open slot 19, be provided with the first bearing pin 20 and the second bearing pin 21, described tripping 14 is articulated with on the first bearing pin 20, described snap close 15 is articulated with on the second bearing pin 21, described moving contact 17 is supported 16 riveted joints mutually with contact, and the upper surface of described snap close 15 and described contact support 16 surface to maintain an equal level, the upper surface of described tripping 14 is lower than the upper surface of described snap close 15, the upper surface of described snap close 15 be provided with protruding and with the catch 22 of described tripping 14 clamping matching.By snap close 15 and tripping 14 are embedded in open slot 19, according to technique scheme, because the operating mechanism of this miniature circuit breaker adopts the mounting means of compact, snap close and tripping are arranged in the plane of contact support simultaneously, effectively reduce stack and coordinate the height forming, structure is compacter, thereby makes the thickness of circuit breaker can be reduced to 9mm, improves the flexibility of product.
As shown in the figure, also comprise contact mechanism 2, arc striking piece 3, and bimetal leaf 4, one end of described arc striking piece 3 is the leading-in end 31 being connected with arc control device 5, the other end of described arc striking piece 3 is the link 32 being connected with bimetal leaf 4, between described leading-in end 31 and link 32, be connected by increasing magnetic portion 6, described increasing magnetic portion 6 is around structure, described housing is provided with annular slot 9, described increasing magnetic portion 6 snaps in described annular slot 9, and described increasing magnetic portion 6 is " triangle " structure, described increasing magnetic portion 6 comprises the first connecting portion 61 and the second connecting portion 62 that are fixedly connected with, described the first connecting portion is fixedly connected with 61 leading-in ends 31, described the second connecting portion 62 is fixedly connected with link 32, the downside of described the first connecting portion 61 is provided with breach 7, one end of described the second connecting portion 62 is connected with the first connecting portion 61, the other end is connected with link 32 through breach 7, and described the first connecting portion 61 is connected with leading-in end 32 one, described the second connecting portion 62 is connected with link 32 one, and described the first connecting portion 61 is fixedly connected with the second connecting portion 62.By the middle part at arc striking piece, the increasing magnetic structure around structure is set, when arc extinguishing, in short circuit, when overload, the electric arc that disjunction moment produces, by the striking of arc striking piece 3, and improve magnetic blow-out intensity by increasing magnetic portion 6, because the arc striking piece 3 of this miniature circuit breaker adopts the frame mode being wound around, effectively strengthen magnetic blow-out effect, improve striking efficiency, thereby make arc quenching effect better, increasing magnetic portion 6 by handle is arranged in annular slot 9, the second connecting portion 62 is walked around through breach 7 and is fixedly connected with link 32 from the below of the first connecting portion 61, compact conformation, install firm.
As shown in the figure, described housing 1 is provided with the striking muscle 8 of some certain intervals of being separated by, one end of described striking muscle 8 is the arc end 81 corresponding with contact mechanism 2, the other end is the release end 82 corresponding with arc control device 5, described arc end 81 is linear structure, described release end 82 is arcuate structure, between described some striking muscle 8 for being uniformly distributed.Described striking muscle 8 forms with housing 1 integrated injection molding, adopts the striking muscle 8 of said structure, can strengthen striking efficiency, improves arc quenching effect.
As shown in the figure, described tripping mechanism comprises iron core 10, yoke 11 and coil 12, described iron core 10 comprises static iron core 101 and moving iron core, described static iron core 101 is installed in yoke 11, described coil 12 is wound in the periphery of static iron core 101, described moving iron core can be axially movablely located at the inner side of static iron core 101, described yoke 11 comprises by the first vertical portion 111 that is positioned at both sides, the second vertical portion 112 and be positioned in the middle of and for connecting the first vertical portion 111, the connecting portion 113 of the second vertical portion 112 forms, the two ends of described static iron core 101 respectively with described the first vertical portion 111, the second vertical portion 112 integrated punchings form.The advantages such as add man-hour, yoke 11 adopts punching stretch integral with iron core 10, because the yoke 11 in the tripping mechanism of this miniature circuit breaker and iron core 10 adopt integral type punching press to be formed by connecting, without substep processing, install, has processing simple, easy for installation.
Embodiment should not be considered as the restriction to invention, but any improvement of doing based on spirit of the present invention, all should be within protection scope of the present invention.
Claims (6)
1. a miniature circuit breaker, comprise housing (1), handle (13), operating mechanism, tripping mechanism and arc control device (5), described operating mechanism comprises tripping (14), snap close (15), contact is supported (16) and moving contact (17), described handle (13) is connected with tripping (14) by U-shaped bar (18), described tripping (14) is articulated with in contact support (16), described snap close (15) and tripping (14) match, it is characterized in that: described contact support (16) is provided with open slot (19), in described open slot (19), be provided with the first bearing pin (20) and the second bearing pin (21), described tripping (14) is articulated with on the first bearing pin (20), described snap close (15) is articulated with on the second bearing pin (21), described moving contact (17) is riveted mutually with contact support (16), and the surface of the upper surface of described snap close (15) and described contact support (16) maintains an equal level, the upper surface of described tripping (14) is lower than the upper surface of described snap close (15), the upper surface of described snap close (15) be provided with protruding and with the catch (22) of described tripping (14) clamping matching.
2. miniature circuit breaker according to claim 1, it is characterized in that: also comprise contact mechanism (2), arc striking piece (3) and bimetal leaf (4), the leading-in end (31) of one end of described arc striking piece (3) for being connected with arc control device (5), the link (32) of the other end of described arc striking piece (3) for being connected with bimetal leaf (4), between described leading-in end (31) and link (32), be connected by increasing magnetic portion (6), described increasing magnetic portion (6) is around structure.
3. miniature circuit breaker according to claim 2, it is characterized in that: described housing is provided with annular slot (9), described increasing magnetic portion (6) snaps in described annular slot (9), described increasing magnetic portion (6) comprises the first connecting portion (61) and the second connecting portion (62) that are fixedly connected with, described the first connecting portion is fixedly connected with (61) leading-in end (31), described the second connecting portion (62) is fixedly connected with link (32), and described increasing magnetic portion (6) is " triangle " structure.
4. miniature circuit breaker according to claim 3, it is characterized in that: the downside of described the first connecting portion (61) is provided with breach (7), one end of described the second connecting portion (62) is connected with the first connecting portion (61), the other end is connected with link (32) through breach (7), and described the first connecting portion (61) is connected with leading-in end (32) one, described the second connecting portion (62) is connected with link (32) one, and described the first connecting portion (61) is fixedly connected with the second connecting portion (62).
5. according to the miniature circuit breaker described in claim 1 or 2 or 3 or 4, it is characterized in that: described housing (1) is provided with the striking muscle (8) of some certain intervals of being separated by, one end of described striking muscle (8) is the arc end (81) corresponding with contact mechanism (2), the other end is the release end (82) corresponding with arc control device (5), described arc end (81) is linear structure, described release end (82) is arcuate structure, between described some striking muscle (8) for being uniformly distributed.
6. according to the miniature circuit breaker described in claim 1 or 2 or 3 or 4, it is characterized in that: described tripping mechanism comprises iron core (10), yoke (11) and coil (12), described iron core (10) comprises static iron core (101) and moving iron core, described static iron core (101) is installed in yoke (11), described coil (12) is wound in the periphery of static iron core (101), described moving iron core can be axially movablely located at the inner side of static iron core (101), described yoke (11) comprises by the first vertical portion (111) that is positioned at both sides, the second vertical portion (112) and be positioned in the middle of and for connecting the first vertical portion (111), connecting portion (113) composition of the second vertical portion (112), the two ends of described static iron core (101) respectively with described the first vertical portion (111), the second vertical portion (112) integrated punching forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094006.XA CN103903919B (en) | 2014-03-14 | 2014-03-14 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094006.XA CN103903919B (en) | 2014-03-14 | 2014-03-14 | Miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103903919A true CN103903919A (en) | 2014-07-02 |
| CN103903919B CN103903919B (en) | 2016-05-11 |
Family
ID=50995187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410094006.XA Expired - Fee Related CN103903919B (en) | 2014-03-14 | 2014-03-14 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103903919B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332368A (en) * | 2014-11-06 | 2015-02-04 | 徐浩清 | Current-limiting small-sized breaker |
| CN108288572A (en) * | 2017-12-28 | 2018-07-17 | 温州市新蓝天电器有限公司 | The breaker of integrated latch tripping mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201238019Y (en) * | 2008-08-05 | 2009-05-13 | 无锡唯特电气技术有限公司 | Free-tripping actuating mechanism of miniature circuit breaker |
| CN103021754A (en) * | 2012-12-10 | 2013-04-03 | 江苏辉能电气有限公司 | Arc extinguishing system of molded case circuit breaker |
| CN202905631U (en) * | 2012-11-01 | 2013-04-24 | 浙江天正电气股份有限公司 | Easily-assembled miniature circuit breaker |
| WO2013107188A1 (en) * | 2012-01-20 | 2013-07-25 | 浙江鼎威科技有限公司 | Ultrathin miniature circuit breaker |
| CN203746769U (en) * | 2014-03-14 | 2014-07-30 | 乐清市捷利电气有限公司 | Miniature breaker |
-
2014
- 2014-03-14 CN CN201410094006.XA patent/CN103903919B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201238019Y (en) * | 2008-08-05 | 2009-05-13 | 无锡唯特电气技术有限公司 | Free-tripping actuating mechanism of miniature circuit breaker |
| WO2013107188A1 (en) * | 2012-01-20 | 2013-07-25 | 浙江鼎威科技有限公司 | Ultrathin miniature circuit breaker |
| CN202905631U (en) * | 2012-11-01 | 2013-04-24 | 浙江天正电气股份有限公司 | Easily-assembled miniature circuit breaker |
| CN103021754A (en) * | 2012-12-10 | 2013-04-03 | 江苏辉能电气有限公司 | Arc extinguishing system of molded case circuit breaker |
| CN203746769U (en) * | 2014-03-14 | 2014-07-30 | 乐清市捷利电气有限公司 | Miniature breaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332368A (en) * | 2014-11-06 | 2015-02-04 | 徐浩清 | Current-limiting small-sized breaker |
| CN104332368B (en) * | 2014-11-06 | 2017-01-11 | 徐浩清 | Current-limiting small-sized breaker |
| CN108288572A (en) * | 2017-12-28 | 2018-07-17 | 温州市新蓝天电器有限公司 | The breaker of integrated latch tripping mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103903919B (en) | 2016-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 325604 Yang Cheng Industrial Zone, Liushi Town, Wenzhou, Zhejiang, Yueqing Applicant after: ZHEJIANG JIELI ELECTRIC APPLIANCE CO., LTD. Address before: 325600 Yang Yang Industrial Zone, Liushi Town, Zhejiang, Wenzhou Applicant before: Yueqing Jieli Electrical Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| 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: 20160511 Termination date: 20170314 |