CN102881531A - 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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- CN102881531A CN102881531A CN2012103384269A CN201210338426A CN102881531A CN 102881531 A CN102881531 A CN 102881531A CN 2012103384269 A CN2012103384269 A CN 2012103384269A CN 201210338426 A CN201210338426 A CN 201210338426A CN 102881531 A CN102881531 A CN 102881531A
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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 that is easy to assemble and operating mechanism thereof.
Background technology
Miniature circuit breaker is a kind of electric switch commonly used, is mainly used in the various places such as industry, commerce, residential houses.Existing miniature circuit breaker mainly is comprised of housing, moving contact, fixed contact and operating mechanism, operating mechanism wherein mainly is comprised of snap close, tripping, support, " U " type connecting rod and handle, support is metal stamping formed, be provided with an extension spring between support below and the housing, moving contact is fixed on the 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 block mutually with tripping the upper end of snap close, links to each other by " U " type connecting rod between tripping and the handle.There is following defective in the operating mechanism of this miniature circuit breaker: 1. support is the metallic plate punching moulding, because sheet material is thinner, tripping can only bend out U-shaped mouthful of clamp bracket, the rigidity of tripping is relatively poor easily to deform, false tripping easily occurs or insensitive phenomenon of threading off in the poor reliability of card mutually between tripping and the snap close.2. when handle is in closure state, form certain pressure between moving contact and the fixed contact, need to reach good electrical connection properties because moving contact is fixed on the support, between moving contact and the support for being rigidly connected, compensation very close to each other between moving contact and the fixed contact, therefore, the installation accuracy of moving contact and fixed contact is had relatively high expectations, so just can avoid moving contact and fixed contact when closure, to produce minim gap, position accuracy demand is higher, and assembly difficulty is large.The snap close back-moving spring install inconvenient, snap close reduction torsion spring fatiguability and following the string, 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 that is easy to assemble and operating mechanism thereof, mainly solved existing miniature circuit breaker and false tripping has easily occured or thread off problem insensitive and that assembly difficulty is large.This circuit breaker has changed the structure of operating mechanism medium-height trestle, and compact conformation is convenient to assembling, threads off sensitive reliable.
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 the tripping, support is the integral type structure, support is provided with the central axle sleeve of centre bore and tripping jointed shaft, snap close reduction torsion spring installation shaft and moving contact installation shaft, snap close reduction torsion spring installation shaft and moving contact installation shaft are separately positioned on the both sides of the below support of central axle sleeve, the tripping jointed shaft be arranged on central axle sleeve the 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 the housing; The support of moving contact installation shaft one 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 that is hinged with central axle sleeve, and the top of snap close is provided with the snap close bayonet socket suitable with the tripping bayonet socket; The moving contact that can rotate is installed on the moving contact installation shaft, moving contact installation shaft outer disk is wound with the moving contact torsion spring, and moving contact torsion spring one end is stuck on the moving contact, and the other end is stuck on the moving contact torsion spring deck, moving contact torsion spring deck extends spacing fixture block, and an end of moving contact blocks mutually with spacing fixture block; Mount pad on the snap close is enclosed within central axle sleeve outward and can rotates to it, coiling has the snap close reduction torsion spring on the snap close reduction torsion spring installation shaft, one end of snap close reduction torsion spring and snap close reduction torsion spring installation shaft are fixed, and the other end is stuck on the snap close, and the snap close reduction torsion spring has the elasticity trend of opening.
The end that described moving contact torsion spring and moving contact block mutually is bent into " U " type and is clamped on the moving contact, and " U " type bottom of moving contact torsion spring contacts with any one sidewall of moving contact.
The sidewall of described moving contact is plane or curved surface.
Be provided with a gap in the middle of the described snap close reduction torsion spring installation shaft, an end of snap close reduction torsion spring is stuck in the gap, and an end of the shape of gap and snap close reduction torsion spring matches to merge it is blocked.
Mount pad on the 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.
A kind of miniature circuit breaker that is easy to assemble that comprises aforesaid operations mechanism, described support is hinged in the housing, and spring fitting is between spring base and housing sidewall; Fixed contact, magnetictrip, arc control device and bimetal leaf are installed in the 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 the axis hole, the other end of connecting rod at right angles bends and the bimetal leaf that jumps places 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 the position of corresponding deep-slotted chip breaker is provided with the interlock jack on the snap close.
Described housing is provided with stopper slot.
The invention has the beneficial effects as follows: owing to taking such scheme, support adopts monolithic construction, simultaneously, physical member is also adopted in tripping, has changed the connected mode between original tripping and the support, also changed the connected mode of original moving contact and support, support and tripping can injection mo(u)ldings, Effective Raise the rigidity of support and tripping, make that card is reliable mutually between tripping and the snap close, false tripping can not occur, overload or short circuit are threaded off sensitive.When handle is in closure state, form certain precompression by the moving contact torsion spring between moving contact and the fixed contact, make to have certain backlash compensation between moving contact and the fixed contact, lower to moving contact and fixed contact position accuracy demand, easily assembling.The snap close reduction torsion spring is easy for installation, has the elasticity trend of opening, dependable performance, long service life.
Description of drawings
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 among 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 among Fig. 2.
Accompanying drawing 5 is structural representations of snap close 1 among 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 among the figure, 2-tripping, 3-support, 4-" U " type connecting rod, the 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 the hole, 16-tripping bayonet socket, the 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, the 23-gap, 24-trip indicator, 25-fixed contact, the 26-magnetictrip, 27-arc control device, 28-bimetal leaf, the 29-axis hole, 30-connecting rod, 31-deep-slotted chip breaker, the 32-jack that links, 33-stopper slot, 34-catch.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
By Fig. 1～shown in Figure 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 the tripping 2, support 3 is the integral type structure, support 3 is provided with the central axle sleeve 6 of centre bore and tripping jointed shaft 7, 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 below support 3 of central axle sleeve 6, tripping jointed shaft 7 be arranged on central axle sleeve 6 the top and with snap close reduction torsion spring installation shaft 8 homonymies; Support 3 opposite sides at tripping jointed shaft 7 places are provided with spring base 10, mounting spring 12 between spring base 10 and the housing 11; The support 3 of moving contact installation shaft 9 one sides 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 that is 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; The moving contact 19 that can rotate is installed on the moving contact installation shaft 9, moving contact installation shaft 9 outer disks are wound with moving contact torsion spring 20, moving contact torsion spring 20 1 ends are stuck on the moving contact 19, the other end is stuck on the moving contact torsion spring deck 13, moving contact torsion spring deck 13 extends spacing fixture block 21, and an end of moving contact 19 blocks mutually with spacing fixture block 21; Mount pad 17 on the snap close 1 is enclosed within outside the central axle sleeve 9 and can rotates to it, coiling has snap close reduction torsion spring 22 on the snap close reduction torsion spring installation shaft 8, one end of snap close reduction torsion spring 22 and snap close reduction torsion spring installation shaft 8 are fixing, the other end is stuck on the 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, simultaneously, physical member is also adopted in tripping 2, has changed the connected mode between original tripping 2 and the support 3, also changed the connected mode of original moving contact 19 and support 3, support 3 and tripping 2 can injection mo(u)ldings, Effective Raise the rigidity of support 3 and tripping 2, make that card is reliable mutually between tripping 2 and the snap close 1, false tripping can not occur, overload or short circuit are threaded off sensitive.When handle is in closure state, form certain precompression by moving contact torsion spring 20 between moving contact 19 and the fixed contact 25, make between moving contact 19 and the fixed contact 25 and have certain backlash compensation, lower to moving contact 19 and fixed contact 25 position accuracy demand, easily assembling, snap close reduction torsion spring 22 is easy for installation, has the elasticity trend of opening, dependable performance, long service life.
The end that described moving contact torsion spring 20 and moving contact 19 block mutually is bent into " U " type and is clamped on the moving contact 19, and " U " type bottom of moving contact torsion spring 20 contacts with any one sidewall of moving contact 19.Easy for installation, articulate reliable between moving contact torsion spring 20 and the moving contact 19.
The sidewall of described moving contact 19 is plane or curved surface.Because the above-mentioned form that articulates, the sidewall of moving contact 19 does not affect articulating between moving contact torsion spring 20 and the moving contact 19 by any shape that structure need to design.
Be provided with a gap 23 in the middle of the described snap close reduction torsion spring installation shaft 8, an end of snap close reduction torsion spring 22 is stuck in the gap 23, and an end of the shape of gap 23 and snap close reduction torsion spring 22 matches to merge it is blocked.Snap close reduction torsion spring 22 convenience are installed.
The top of described support 3 upper spring seats 10 is extended with the trip indicator corresponding with Shell of circuit breaker 24.Can see closure or the trip status of circuit breaker by trip indicator 24.
A kind of miniature circuit breaker that is easy to assemble that comprises aforesaid operations mechanism, described support 3 is hinged in the housing 11, and spring 12 is installed between spring base 10 and housing 11 sidewalls; Fixed contact 25, magnetictrip 26, arc control device 27 and bimetal leaf 28 are installed in the 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 the axis hole 29, the other end of connecting rod 30 at right angles bends and the bimetal leaf 28 that jumps places its side.This circuit breaker is compared with the existing miniature circuit breaker of isostructure type, and long service life is 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 the position of corresponding deep-slotted chip breaker 31 is provided with interlock jack 32 on the snap close 1.Can utilize pivot pin to pass deep-slotted chip breaker 31 and interlock jack 32, thread off when two or three circuit breakers use side by side and link, or support the use with earth leakage protective device.
Described housing 11 is provided with stopper slot 33.Stopper slot 33 is avoided spring 12 plaies.
Claims (9)
1. 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 the tripping (2), it is characterized in that: support (3) is the integral type structure, support (3) is provided with central axle sleeve (6) and the tripping jointed shaft (7) with 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 below support (3) of central axle sleeve (6), tripping jointed shaft (7) be arranged on central axle sleeve (6) the top and with snap close reduction torsion spring installation shaft (8) homonymy; Support (3) opposite side that tripping jointed shaft (7) is located is provided with spring base (10), mounting spring (12) between spring base (10) and the housing (11); The support (3) of moving contact installation shaft (9) one sides 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) that is 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); The moving contact (19) that can rotate is installed on the moving contact installation shaft (9), moving contact installation shaft (9) outer disk is wound with moving contact torsion spring (20), moving contact torsion spring (20) one ends are stuck on the moving contact (19), the other end is stuck on the moving contact torsion spring deck (13), moving contact torsion spring deck (13) extends spacing fixture block (21), and an end of moving contact (19) blocks mutually with spacing fixture block (21); Mount pad (17) on the snap close (1) is enclosed within outside the central axle sleeve (9) and can rotates to it, 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 fixing, the other end is stuck on the 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: the end that moving contact torsion spring (20) and moving contact (19) block mutually is bent into " U " type and is clamped on the moving contact (19), and " U " type bottom of moving contact torsion spring (20) contacts with any one sidewall of moving contact (19).
3. operating mechanism according to claim 2, it is characterized in that: the sidewall of moving contact (19) is plane or curved surface.
4. according to claim 1,2 or 3 described operating mechanisms, it is characterized in that: be provided with a gap (23) in the middle of the snap close reduction torsion spring installation shaft (8), one end of snap close reduction torsion spring (22) is stuck in the gap (23), and an end of the shape of gap (23) and snap close reduction torsion spring (22) matches to merge it is blocked.
5. according to claim 1,2 or 3 described operating mechanisms, it is characterized in that: the mount pad (17) on the snap close (1) is provided with catch (34), and catch (34) extends to snap close bayonet socket (18) and locates.
6. according to claim 1,2 or 3 described operating mechanisms, it is characterized in that: the top of support (3) upper spring seat (10) is extended with the trip indicator corresponding with Shell of circuit breaker (24).
7. miniature circuit breaker that is easy to assemble that comprises the described operating mechanism of any one in the claim 1 to 6, it is characterized in that: described support (3) is hinged in the housing (11), and spring (12) is installed between spring base (10) and housing (11) sidewall; Fixed contact (25), magnetictrip (26), arc control device (27) and bimetal leaf (28) are installed in the housing (11), fixed contact (25) is positioned between magnetictrip (26) and the 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 the axis hole (29), the other end of connecting rod (30) at right angles bends and the bimetal leaf that jumps (28) places its side.
8. the miniature circuit breaker that is easy to assemble according to claim 7, 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).
9. according to claim 7 or the 8 described miniature circuit breakers that are easy to assemble, it 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 |
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| 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 |
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| Publication Number | Publication Date |
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| CN102881531A true CN102881531A (en) | 2013-01-16 |
| CN102881531B 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167333A (en) * | 2014-08-20 | 2014-11-26 | 加西亚电子电器有限公司 | Miniature circuit breaker |
| CN104183435A (en) * | 2014-09-03 | 2014-12-03 | 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 |
| EP3171385A4 (en) * | 2014-07-17 | 2018-02-21 | Chint Group Corporation | Operation device of multi-pole miniature circuit breaker |
| CN108899256A (en) * | 2018-07-27 | 2018-11-27 | 高能格乐电气股份有限公司 | The disengaging deivce of earth leakage of general two kinds of breakers |
| CN111942124A (en) * | 2020-07-23 | 2020-11-17 | 江苏德福来汽车部件有限公司 | Simple air guide net |
| CN112071710A (en) * | 2019-06-11 | 2020-12-11 | 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 |
| CN115424902A (en) * | 2022-09-07 | 2022-12-02 | 加西亚电子电器股份有限公司 | Residual current circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3171385A4 (en) * | 2014-07-17 | 2018-02-21 | Chint Group Corporation | Operation device of multi-pole miniature circuit breaker |
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| CN112071710A (en) * | 2019-06-11 | 2020-12-11 | 北京明日电器设备有限责任公司 | Miniature circuit breaker with body split-combined display |
| 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 |
| CN111942124A (en) * | 2020-07-23 | 2020-11-17 | 江苏德福来汽车部件有限公司 | Simple air guide net |
| CN113745065A (en) * | 2021-08-19 | 2021-12-03 | 浙江合兴电工有限公司 | Small-sized circuit breaker |
| CN115424902A (en) * | 2022-09-07 | 2022-12-02 | 加西亚电子电器股份有限公司 | Residual current 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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| CN102881531B (en) | 2015-02-25 |
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