CN102881531B - Easily-assembled small circuit breaker and operating mechanism thereof - Google Patents
Easily-assembled small circuit breaker and operating mechanism thereof Download PDFInfo
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- CN102881531B CN102881531B CN201210338426.9A CN201210338426A CN102881531B CN 102881531 B CN102881531 B CN 102881531B CN 201210338426 A CN201210338426 A CN 201210338426A CN 102881531 B CN102881531 B CN 102881531B
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- snap close
- moving contact
- torsion spring
- tripping
- installation shaft
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Abstract
The invention discloses an easily-assembled small circuit breaker and an operating mechanism thereof and mainly solves the problem that the conventional small circuit breaker is easy to release wrongly or release non-sensitively and difficult to assemble. The operating mechanism is characterized in that a bracket (3) is of an integrated structure and is provided with a central shaft sleeve (6) with a center hole, an articulating shaft (7) for a jumper buckle, a restoring torsion spring mounting shaft (8) for a locking buckle and a moving contact mounting shaft (9); the jumper buckle (2) is a solid component; a moving contact torsion spring (20) is coiled outside the moving contact mounting shaft (9); the mounting seat (17) on the locking buckle (1) is sleeved outside the central shaft sleeve (6) and can rotate relatively to the shaft sleeve (6); and a locking buckle restoring torsion spring (22) is coiled on the restoring torsion spring mounting shaft (8) for the locking buckle. The operating mechanism changes the structure of the bracket, and is compact in structure and convenient to mount. The circuit breaker is convenient to assemble and sensitive and reliable to release.
Description
Technical field
The present invention relates to a kind of electric switch, be specifically related to a kind of miniature circuit breaker and the operating mechanism thereof that are easy to assembling.
Background technology
Miniature circuit breaker is a kind of conventional electric switch, is mainly used in the various places such as industry, business, residential houses.Existing miniature circuit breaker forms primarily of housing, moving contact, fixed contact and operating mechanism, operating mechanism is wherein primarily of snap close, tripping, support, " U " type connecting rod and handle composition, support is metal stamping formed, be provided with an extension spring below support and between housing, moving contact is fixed on support; Tripping is also by metal stamping formed, and tripping is clamped in the upper right corner of support and is hinged with support, and snap close is hinged on the left side central portion of support and the upper end of snap close is blocked mutually with tripping, is connected between tripping with handle by " U " type connecting rod.There is following defect in the operating mechanism of this miniature circuit breaker: 1. support is that metallic plate punching is shaping, because sheet material is thinner, tripping can only bend out U-shaped mouth clamp bracket, the rigidity of tripping is poor easily to deform,, easily there is false tripping or insensitive phenomenon of threading off in the poor reliability of blocking mutually between tripping with snap close.2. when handle is in closure state, certain pressure is formed between moving contact and fixed contact, need to reach good electrical connection properties, because moving contact is fixed on support, for being rigidly connected between moving contact and support, compensation very close to each other between moving contact and fixed contact, therefore, require higher to the installation accuracy of moving contact and fixed contact, moving contact and fixed contact so just can be avoided when closed to produce minim gap, position accuracy demand is higher, and assembly difficulty is large.3. snap close back-moving spring is installed inconvenient, snap close reduction torsion spring fatiguability and following the string, and useful life is short.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides a kind of miniature circuit breaker and the operating mechanism thereof that are easy to assembling, mainly solving existing miniature circuit breaker and false tripping easily occurs or insensitive and that assembly difficulty is large problem of threading off.This circuit breaker changes the structure of operating mechanism medium-height trestle, compact conformation, is convenient to assembling, threads off reliably sensitive.
Technical scheme of the present invention is: a kind of operating mechanism, comprise snap close, tripping, support, " U " type connecting rod and handle, " U " type connecting rod is connected between handle and tripping, support is integral type structure, support is provided with central axle sleeve and tripping jointed shaft, snap close reduction torsion spring installation shaft and the moving contact installation shaft of band centre bore, snap close reduction torsion spring installation shaft and moving contact installation shaft are separately positioned on the both sides of the underlying holder of central axle sleeve, tripping jointed shaft be arranged on central axle sleeve top and with snap close reduction torsion spring installation shaft homonymy; The support opposite side at tripping jointed shaft place is provided with spring base, mounting spring between spring base and housing; The support of moving contact installation shaft side is provided with moving contact torsion spring deck; Tripping is physical member, and tripping is provided with hinged through hole, " U " type connecting rod penetrates hole and tripping bayonet socket, and the middle part of snap close is provided with the mount pad be hinged with central axle sleeve, and the top of snap close is provided with the snap close bayonet socket suitable with tripping bayonet socket; Moving contact installation shaft is provided with the moving contact that can rotate, moving contact installation shaft outer disk is wound with moving contact torsion spring, and moving contact one end is stuck on moving contact, and the other end is stuck on moving contact torsion spring deck, moving contact torsion spring deck extends spacing fixture block, and one end of moving contact is blocked mutually with spacing fixture block; Mount pad on snap close is enclosed within central axle sleeve and also can rotates to it outward, in snap close reduction torsion spring installation shaft, coiling has snap close reduction torsion spring, one end and the snap close reduction torsion spring installation shaft of snap close reduction torsion spring are fixed, and the other end is stuck on snap close, and snap close reduction torsion spring has the elasticity trend of opening.
One end that described moving contact torsion spring and moving contact block mutually is bent into " U " type and is clamped on moving contact, contacts bottom " U " type of moving contact torsion spring with any one sidewall of moving contact.
The sidewall of described moving contact is plane or curved surface.
Is provided with a gap in the middle of described snap close reduction torsion spring installation shaft, one end of snap close reduction torsion spring is stuck in gap, and the merging that matches of the shape of gap and one end of snap close reduction torsion spring makes it block.
Mount pad on described snap close is provided with catch, and catch extends to snap close bayonet socket place.
The top of described support upper spring seat is extended with the trip indicator corresponding with Shell of circuit breaker.
Comprise the miniature circuit breaker being easy to assemble of aforesaid operations mechanism, described support is hinged in housing, and spring fitting is between spring base and housing sidewall; Fixed contact, magnetictrip, arc control device and bimetal leaf are installed in housing, fixed contact is between magnetictrip and arc control device, magnetictrip is corresponding with the bottom of snap close, the lower end of snap close is provided with axis hole, be inserted with connecting rod in axis hole, the other end of connecting rod at right angles bends and the bimetal leaf that jumps is placed in its side.
A sidewall of described housing has deep-slotted chip breaker, and described deep-slotted chip breaker is corresponding with the bottom of snap close, and on snap close, the position of corresponding deep-slotted chip breaker is provided with interlock jack.
Described housing is provided with stopper slot.
The invention has the beneficial effects as follows: owing to taking such scheme, support adopts monolithic construction, meanwhile, tripping also adopts physical member, changes the connected mode between original tripping and support, have also been changed the connected mode of original moving contact and support, support and tripping can injection mo(u)ldings, effectively improve the rigidity of support and tripping, make between tripping with snap close that card is reliable mutually, false tripping can not occur, overload or short circuit are threaded off sensitive.When handle is in closure state, between moving contact and fixed contact, form certain precompression by moving contact torsion spring, make that there is between moving contact and fixed contact certain backlash compensation, to moving contact and fixed contact position accuracy demand lower, easily assemble.Snap close reduction torsion spring is easy for installation, has the elasticity trend of opening, dependable performance, long service life.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the middle-size and small-size circuit breaker of the present invention.
Accompanying drawing 2 is exploded views of operating mechanism in the present invention.
Accompanying drawing 3 is structural representations of Fig. 2 medium-height trestle 3.
Accompanying drawing 4 is structural representations of tripping 2 in Fig. 2.
Accompanying drawing 5 is structural representations of snap close 1 in Fig. 2.
Accompanying drawing 6 is assembly structure schematic diagrames of Fig. 2 medium-height trestle 3 and moving contact 19.
Accompanying drawing 7 is structural representations of Fig. 1 middle shell 11.
1-snap close in figure, 2-tripping, 3-support, 4-" U " type connecting rod, 5-handle, 6-central axle sleeve, 7-tripping jointed shaft, 8-snap close reduction torsion spring installation shaft, 9-moving contact installation shaft, 10-spring base, 11-housing, 12-spring, 13-moving contact torsion spring deck, the hinged through hole of 14-, 15-" U " type connecting rod penetrates hole, 16-tripping bayonet socket, 17-mount pad, 18-snap close bayonet socket, 19-moving contact, 20-moving contact torsion spring, the spacing fixture block of 21-, 22-snap close reduction torsion spring, 23-gap, 24-trip indicator, 25-fixed contact, 26-magnetictrip, 27-arc control device, 28-bimetal leaf, 29-axis hole, 30-connecting rod, 31-deep-slotted chip breaker, 32-links jack, 33-stopper slot, 34-catch.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1 ~ Fig. 7, a kind of operating mechanism comprises snap close 1, tripping 2, support 3, " U " type connecting rod 4 and handle 5, " U " type connecting rod 4 is connected between handle 5 and tripping 2, support 3 is integral type structure, support 3 is provided with central axle sleeve 6 and tripping jointed shaft 7, snap close reduction torsion spring installation shaft 8 and the moving contact installation shaft 9 of band centre bore, snap close reduction torsion spring installation shaft 8 and moving contact installation shaft 9 are separately positioned on the both sides of the underlying holder 3 of central axle sleeve 6, tripping jointed shaft 7 be arranged on central axle sleeve 6 top and with snap close reduction torsion spring installation shaft 8 homonymy; Support 3 opposite side at tripping jointed shaft 7 place is provided with spring base 10, mounting spring 12 between spring base 10 and housing 11; The support 3 of moving contact installation shaft 9 side is provided with moving contact torsion spring deck 13; Tripping 2 is physical member, and tripping 2 is provided with hinged through hole 14, " U " type connecting rod penetrates hole 15 and tripping bayonet socket 16, and the middle part of snap close 1 is provided with the mount pad 17 be hinged with central axle sleeve 6, and the top of snap close 1 is provided with the snap close bayonet socket 18 suitable with tripping bayonet socket 16; Moving contact installation shaft 9 is provided with the moving contact 19 that can rotate, moving contact installation shaft 9 outer disk is wound with moving contact torsion spring 20, moving contact torsion spring 20 one end is stuck on moving contact 19, the other end is stuck on moving contact torsion spring deck 13, moving contact torsion spring deck 13 extends spacing fixture block 21, one end and the spacing fixture block 21 phase card of moving contact 19; Mount pad 17 on snap close 1 is enclosed within outside central axle sleeve 6 and also can rotates to it, in snap close reduction torsion spring installation shaft 8, coiling has snap close reduction torsion spring 22, one end and the snap close reduction torsion spring installation shaft 8 of snap close reduction torsion spring 22 are fixed, the other end is stuck on snap close 1, and snap close reduction torsion spring 22 has the elasticity trend of opening.Owing to taking technique scheme, support 3 adopts monolithic construction, meanwhile, tripping 2 also adopts physical member, changes the connected mode between original tripping 2 and support 3, have also been changed the connected mode of original moving contact 19 and support 3, support 3 and tripping 2 can injection mo(u)ldings, effectively improve the rigidity of support 3 and tripping 2, make to block mutually between tripping 2 with snap close 1 reliable, false tripping can not occur, overload or short circuit are threaded off sensitive.When handle is in closure state, certain precompression is formed by moving contact torsion spring 20 between moving contact 19 and fixed contact 25, make, between moving contact 19 and fixed contact 25, there is certain backlash compensation, to moving contact 19 and fixed contact 25 position accuracy demand lower, easy assembling, snap close reduction torsion spring 22 is easy for installation, has the elasticity trend of opening, dependable performance, long service life.
Described moving contact torsion spring 20 is bent into " U " type with one end of moving contact 19 phase card and is clamped on moving contact 19, contacts bottom " U " type of moving contact torsion spring 20 with any one sidewall of moving contact 19.Easy for installation, mount reliable between moving contact torsion spring 20 and moving contact 19.
The sidewall of described moving contact 19 is plane or curved surface.Due to above-mentioned mounting form, the sidewall of moving contact 19 needs any shape of design not affect mounting between moving contact torsion spring 20 and moving contact 19 by structure.
Is provided with a gap 23 in the middle of described snap close reduction torsion spring installation shaft 8, one end of snap close reduction torsion spring 22 is stuck in gap 23, and the merging that matches of the shape of gap 23 and one end of snap close reduction torsion spring 22 makes it block.Snap close reduction torsion spring 22 convenience is installed.
Mount pad 17 on described snap close 1 is provided with catch 34, and catch 34 extends to snap close bayonet socket 18 place.Object is convenient to mechanism when integrally assembling, and tripping 2 can not split away off from tripping jointed shaft 7 because of the upset of mechanism member.
The top of described support 3 upper spring seat 10 is extended with the trip indicator 24 corresponding with Shell of circuit breaker.The closed of circuit breaker or trip status can be seen by trip indicator 24.
Comprise the miniature circuit breaker being easy to assemble of aforesaid operations mechanism, described support 3 is hinged in housing 11, and spring 12 is arranged between spring base 10 and housing 11 sidewall; Fixed contact 25, magnetictrip 26, arc control device 27 and bimetal leaf 28 are installed in housing 11, fixed contact 25 is between magnetictrip 26 and arc control device 27, magnetictrip 26 is corresponding with the bottom of snap close 1, the lower end of snap close 1 is provided with axis hole 29, be inserted with connecting rod 30 in axis hole 29, the other end of connecting rod 30 at right angles bends and the bimetal leaf 28 that jumps is placed in its side.This circuit breaker compared with the existing miniature circuit breaker of same structure type, long service life, safe and reliable, failure rate is low.
A sidewall of described housing 11 has deep-slotted chip breaker 31, and described deep-slotted chip breaker 31 is corresponding with the bottom of snap close 1, and on snap close 1, the position of corresponding deep-slotted chip breaker 31 is provided with interlock jack 32.Pivot pin can be utilized to pass deep-slotted chip breaker 31 and interlock jack 32, interlock of threading off when two or three circuit breakers use side by side, or support the use with earth leakage protective device.
Described housing 11 is provided with stopper slot 33.Stopper slot 33 avoids spring 12 play.
Claims (7)
1. an operating mechanism, comprise snap close (1), tripping (2), support (3), " U " type connecting rod (4) and handle (5), " U " type connecting rod (4) is connected between handle (5) and tripping (2), it is characterized in that: support (3) is integral type structure, support (3) is provided with central axle sleeve (6) and the tripping jointed shaft (7) of band centre bore, snap close reduction torsion spring installation shaft (8) and moving contact installation shaft (9), snap close reduction torsion spring installation shaft (8) and moving contact installation shaft (9) are separately positioned on the both sides of the underlying holder (3) of central axle sleeve (6), tripping jointed shaft (7) be arranged on central axle sleeve (6) top and with snap close reduction torsion spring installation shaft (8) homonymy, support (3) opposite side at tripping jointed shaft (7) place is provided with spring base (10), mounting spring (12) between spring base (10) and housing (11), the top of support (3) upper spring seat (10) is extended with the trip indicator (24) corresponding with Shell of circuit breaker, the support (3) of moving contact installation shaft (9) side is provided with moving contact torsion spring deck (13), tripping (2) is physical member, tripping (2) is provided with hinged through hole (14), " U " type connecting rod penetrates hole (15) and tripping bayonet socket (16), the middle part of snap close (1) is provided with the mount pad (17) be hinged with central axle sleeve (6), and the top of snap close (1) is provided with the snap close bayonet socket (18) suitable with tripping bayonet socket (16), moving contact installation shaft (9) is provided with the moving contact (19) that can rotate, moving contact installation shaft (9) outer disk is wound with moving contact torsion spring (20), moving contact torsion spring (20) one end is stuck on moving contact (19), the other end is stuck on moving contact torsion spring deck (13), moving contact torsion spring deck (13) extends spacing fixture block (21), and one end of moving contact (19) is blocked mutually with spacing fixture block (21), mount pad (17) on snap close (1) is enclosed within central axle sleeve (6) and also can rotates to it outward, mount pad (17) on snap close (1) is provided with catch (34), catch (34) extends to snap close bayonet socket (18) place, the upper coiling of snap close reduction torsion spring installation shaft (8) has snap close reduction torsion spring (22), one end of snap close reduction torsion spring (22) and snap close reduction torsion spring installation shaft (8) are fixed, the other end is stuck on snap close (1), and snap close reduction torsion spring (22) has the elasticity trend of opening.
2. operating mechanism according to claim 1, it is characterized in that: one end that moving contact torsion spring (20) and moving contact (19) block mutually is bent into " U " type and is clamped on moving contact (19), contacts bottom " U " type of moving contact torsion spring (20) with any one sidewall of moving contact (19).
3. operating mechanism according to claim 2, is characterized in that: the sidewall of moving contact (19) is plane or curved surface.
4. the operating mechanism according to claim 1,2 or 3, it is characterized in that: in the middle of snap close reduction torsion spring installation shaft (8), be provided with a gap (23), one end of snap close reduction torsion spring (22) is stuck in gap (23), and the merging that matches of the shape of gap (23) and one end of snap close reduction torsion spring (22) makes it block.
5. one kind comprises the miniature circuit breaker being easy to assemble of operating mechanism described in any one in Claims 1-4, it is characterized in that: described support (3) is hinged in housing (11), spring (12) is arranged between spring base (10) and housing (11) sidewall; Fixed contact (25), magnetictrip (26), arc control device (27) and bimetal leaf (28) are installed in housing (11), fixed contact (25) is positioned between magnetictrip (26) and arc control device (27), magnetictrip (26) is corresponding with the bottom of snap close (1), the lower end of snap close (1) is provided with axis hole (29), be inserted with connecting rod (30) in axis hole (29), the other end of connecting rod (30) at right angles bends and the bimetal leaf that jumps (28) is placed in its side.
6. the miniature circuit breaker being easy to assemble according to claim 5, it is characterized in that: a sidewall of housing (11) has deep-slotted chip breaker (31), described deep-slotted chip breaker (31) is corresponding with the bottom of snap close (1), and the position of the upper corresponding deep-slotted chip breaker (31) of snap close (1) is provided with interlock jack (32).
7. the miniature circuit breaker being easy to assemble according to claim 5 or 6, is characterized in that: described housing (11) is provided with stopper slot (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210338426.9A CN102881531B (en) | 2012-09-13 | 2012-09-13 | Easily-assembled small circuit breaker and operating mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210338426.9A CN102881531B (en) | 2012-09-13 | 2012-09-13 | Easily-assembled small circuit breaker and operating mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102881531A CN102881531A (en) | 2013-01-16 |
| CN102881531B true CN102881531B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210338426.9A Active CN102881531B (en) | 2012-09-13 | 2012-09-13 | Easily-assembled small circuit breaker and operating mechanism thereof |
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| CN (1) | CN102881531B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134588B (en) * | 2014-07-17 | 2016-03-02 | 正泰集团股份有限公司 | A kind of operating means of multipole small-size circuit breaker |
| CN104167333B (en) * | 2014-08-20 | 2016-01-06 | 加西亚电子电器有限公司 | A kind of miniature circuit breaker |
| CN104183435B (en) * | 2014-09-03 | 2017-02-15 | 浙江麦克力电气股份有限公司 | Circuit breaker with reclosing transmission mechanism in neutral pole capable of being opened and closed |
| CN108899256B (en) * | 2018-07-27 | 2024-02-23 | 高能格乐电气股份有限公司 | Leakage tripping device of universal two circuit breakers |
| CN112071710B (en) * | 2019-06-11 | 2022-11-08 | 北京明日电器设备有限责任公司 | Miniature circuit breaker with body split-combined display |
| CN113745065A (en) * | 2021-08-19 | 2021-12-03 | 浙江合兴电工有限公司 | Small-sized circuit breaker |
| CN115424902B (en) * | 2022-09-07 | 2024-04-23 | 加西亚电子电器股份有限公司 | Leakage circuit breaker |
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| US4472701A (en) * | 1983-04-14 | 1984-09-18 | Gte Laboratories Incorporated | Electrical circuit breaker |
| CN1409346A (en) * | 2001-09-25 | 2003-04-09 | 莫勒自动***公司 | Switching mechanism of protective switch |
| CN102543603A (en) * | 2012-01-20 | 2012-07-04 | 浙江鼎威科技有限公司 | Ultrathin minitype breaker |
| CN202736860U (en) * | 2012-09-13 | 2013-02-13 | 浙江天正电气股份有限公司 | Miniature breaker easy to assemble and operating mechanism thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20011675A1 (en) * | 2001-08-01 | 2003-02-01 | Abb Service Srl | SWITCH FOR A LOW VOLTAGE ELECTRIC CIRCUIT |
| FR2914485B1 (en) * | 2007-03-29 | 2009-04-24 | Schneider Electric Ind Sas | DEVICE FOR CONTROLLING AN ELECTRICAL PROTECTION APPARATUS AND ELECTRICAL PROTECTION APPARATUS HAVING THE SAME |
| CN201622985U (en) * | 2010-01-12 | 2010-11-03 | 温州波普电气有限公司 | Miniature circuit breaker |
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2012
- 2012-09-13 CN CN201210338426.9A patent/CN102881531B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472701A (en) * | 1983-04-14 | 1984-09-18 | Gte Laboratories Incorporated | Electrical circuit breaker |
| CN1409346A (en) * | 2001-09-25 | 2003-04-09 | 莫勒自动***公司 | Switching mechanism of protective switch |
| CN102543603A (en) * | 2012-01-20 | 2012-07-04 | 浙江鼎威科技有限公司 | Ultrathin minitype breaker |
| CN202736860U (en) * | 2012-09-13 | 2013-02-13 | 浙江天正电气股份有限公司 | Miniature breaker easy to assemble and operating mechanism thereof |
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| CN102881531A (en) | 2013-01-16 |
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