CN102881530A - Operating mechanism and miniature circuit breaker - Google Patents
Operating mechanism and miniature circuit breaker Download PDFInfo
- Publication number
- CN102881530A CN102881530A CN2012103104126A CN201210310412A CN102881530A CN 102881530 A CN102881530 A CN 102881530A CN 2012103104126 A CN2012103104126 A CN 2012103104126A CN 201210310412 A CN201210310412 A CN 201210310412A CN 102881530 A CN102881530 A CN 102881530A
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- snap close
- moving contact
- torsion spring
- tripping
- spring
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Abstract
The invention discloses an operating mechanism and a miniature circuit breaker. The problems that false tripping of the conventional miniature circuit breaker easily happens, or the conventional miniature circuit breaker is insensitive to trip, the assembling difficulty is high and the failure rate is high are mainly solved. The operating mechanism is characterized in that a bracket (3) has an integral structure; a central shaft sleeve (6) provided with a central hole and a trip hinged shaft (7), a latch resetting torsion spring mounting shaft (8) and a moving contact mounting shaft (9) which are distributed in a triangle shape are arranged on the bracket (3); a trip (2) is a body piece; a moving contact torsion spring (22) is wound outside the moving contact mounting shaft (9); a mounting seat (18) on the trip (2) is sleeved outside the central shaft sleeve (6) and can rotate relative to the central shaft sleeve (6); and a latch resetting torsion spring (23) is wound on the latch resetting torsion spring mounting shaft (8). By the operating mechanism, the structure of the bracket is changed, and the operating mechanism is compact in structure and convenient to mount; and moreover, the miniature circuit breaker is convenient to assemble and is sensitively and reliably tripped.
Description
Technical field
The present invention relates to a kind of electric switch, be specifically related to a kind of operating mechanism and miniature circuit breaker.
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.3. the snap close back-moving spring is installed inconveniently, snap close is not carried out yet spacing, and in the process of threading off and resetting, snap close can produce impact to the parts of periphery, causes the positional precision of support, the first-class parts of movable contact to produce deviation, and failure rate is high.
Summary of the invention
In order to overcome the deficiency of background technology, the miniature circuit breaker that the invention provides a kind of operating mechanism and this operating mechanism is installed has solved mainly that false tripping easily occurs existing miniature circuit breaker or insensitive, the assembly difficulty of threading off reaches greatly the high problem of failure rate.This operating mechanism has changed the structure of support, and compact conformation is convenient to install; This miniature circuit breaker 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 tripping jointed shaft, snap close reduction torsion spring installation shaft and the moving contact installation shaft with the central axle sleeve of centre bore and distribution triangular in shape, the support at tripping jointed shaft place extends outward a spring base, mounting spring between spring base and the housing; Be provided with moving contact torsion spring deck between the tripping jointed shaft on central axle sleeve right side and the moving contact installation shaft, the outer wall of central axle sleeve is provided with spacing fixture block; Tripping is physical member, tripping is provided with hinged through hole, " U " type connecting rod penetrates hole and tripping bayonet socket, the middle part of snap close is provided with the mount pad that is hinged with central axle sleeve, the endoporus of mount pad has the stopper slot that matches with spacing fixture block, 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, and 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, and an end and the central axle sleeve of moving contact block mutually; Mount pad on the snap close is enclosed within central axle sleeve outward and can rotates to it, stopper slot is corresponding with spacing fixture block, coiling has the snap close reduction torsion spring on the snap close reduction torsion spring installation shaft, and an 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.
Be provided with " one " font 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.
Be equipped with reinforcement between snap close reduction torsion spring installation shaft and the central axle sleeve and between spring base and the central axle sleeve on the described support.
Described spring base is cylindric, and the outer wall of spring base is provided with positioning bar, and an end of spring is enclosed within on the spring base and with positioning bar and blocks mutually.
A kind of miniature circuit breaker that comprises aforesaid operations mechanism, described support is hinged in the housing, is provided with the baffle plate corresponding with spring base in the housing, and spring fitting is between spring base and baffle plate; 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.
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, snap close has been carried out spacing, and in the process of threading off and resetting, the snap close actuating length is less, the impulsive force that the parts of periphery are produced a little less than, dependable performance, failure rate is low.
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 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, 5-handle, 6-central axle sleeve, 7-tripping jointed shaft, 8-snap close reduction torsion spring installation shaft, 9-moving contact installation shaft, the 10-spring base, 11-housing, 12-spring, 13-moving contact torsion spring deck, the spacing fixture block of 14-, the hinged through hole of 15-, 16-" U " type connecting rod penetrates the hole, 17-tripping bayonet socket, 18-mount pad, the 19-stopper slot, 20-snap close bayonet socket, 21-moving contact, 22-moving contact torsion spring, 23-snap close reduction torsion spring, 24-gap, the 25-reinforcement, 26-baffle plate, 27-fixed contact, the 28-magnetictrip, 29-arc control device, 30-bimetal leaf, the 31-axis hole, 32-connecting rod, 33-deep-slotted chip breaker, the 34-jack that links, the 35-positioning bar.
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 tripping jointed shaft 7 of the central axle sleeve 6 of centre bore and distribution triangular in shape, snap close reduction torsion spring installation shaft 8 and moving contact installation shaft 9, the support 3 at tripping jointed shaft 7 places extends outward a spring base 10, mounting spring 12 between spring base 10 and the housing 11; Be provided with moving contact torsion spring deck 13 between the tripping jointed shaft 7 on central axle sleeve 6 right sides and the moving contact installation shaft 9, the outer wall of central axle sleeve 6 is provided with spacing fixture block 14; Tripping 2 is physical member, tripping 2 is provided with hinged through hole 15, " U " type connecting rod penetrates hole 16 and tripping bayonet socket 17, the middle part of snap close 2 is provided with the mount pad 18 that is hinged with central axle sleeve 6, the endoporus of mount pad 18 has the stopper slot 19 that matches with spacing fixture block 14, and the top of snap close 2 is provided with the snap close bayonet socket 20 suitable with tripping bayonet socket 17; The moving contact 21 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 22, moving contact torsion spring 22 1 ends are stuck on the moving contact 21, and the other end is stuck on the moving contact torsion spring deck 13, and an end of moving contact 21 blocks mutually with central axle sleeve 9; Mount pad 18 on the snap close 2 is enclosed within outside the central axle sleeve 9 and can rotates to it, stopper slot 19 is corresponding with spacing fixture block 14, coiling has snap close reduction torsion spring 23 on the snap close reduction torsion spring installation shaft 8, one end of snap close reduction torsion spring 23 and snap close reduction torsion spring installation shaft 8 are fixing, and the other end is stuck on the snap close 2.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 21 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 22 between moving contact 21 and the fixed contact 27, make between moving contact 21 and the fixed contact 27 to have certain backlash compensation, lower to moving contact 21 and fixed contact 27 position accuracy demand, easily assembling.Snap close reduction torsion spring 23 is easy for installation, snap close 1 has been carried out spacing, and in the process of threading off and resetting, snap close 1 actuating length is less, the impulsive force that the parts of periphery are produced a little less than, dependable performance, failure rate is low.
Be provided with " one " font gap 24 in the middle of the described snap close reduction torsion spring installation shaft 8, an end of snap close reduction torsion spring 23 is stuck in the gap 24.Snap close reduction torsion spring 23 convenience are installed.
Be equipped with reinforcement 25 between snap close reduction torsion spring installation shaft 8 and the central axle sleeve 6 and between spring base 10 and the central axle sleeve 6 on the described support 3.Reinforcement 25 has increased the strength and stiffness of support 3, and support 3 is not fragile.
Described spring base 10 is cylindric, and the outer wall of spring base 10 is provided with positioning bar 35, and an end of spring 12 is enclosed within on the spring base 10 and with positioning bar 35 and blocks mutually.Positioning bar 35 plays the role of positioning, and avoids spring 12 to come off.
A kind of miniature circuit breaker of stating operating mechanism that comprises, described support 3 is hinged in the housing 11, is provided with the baffle plate 26 corresponding with spring base 10 in the housing 11, and spring 12 is installed between spring base 10 and the baffle plate 26; Fixed contact 27, magnetictrip 28, arc control device 29 and bimetal leaf 30 are installed in the housing 11, fixed contact 27 is between magnetictrip 28 and arc control device 29, magnetictrip 28 is corresponding with the bottom of snap close 2, the lower end of snap close 2 is provided with axis hole 31, be inserted with connecting rod 32 in the axis hole 31, the other end of connecting rod 32 at right angles bends and the bimetal leaf 30 that jumps places its side.This miniature 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 33, and described deep-slotted chip breaker 33 is corresponding with the bottom of snap close 2, and the position of corresponding deep-slotted chip breaker 33 is provided with interlock jack 34 on the snap close 2.Can utilize pivot pin to pass deep-slotted chip breaker 33 and interlock jack 34, thread off when two or three miniature circuit breakers use side by side and link, or support the use with earth leakage protective device.
Claims (6)
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) with centre bore and the tripping jointed shaft (7) of distribution triangular in shape, snap close reduction torsion spring installation shaft (8) and moving contact installation shaft (9), the support (3) that tripping jointed shaft (7) is located extends outward a spring base (10), mounting spring (12) between spring base (10) and the housing (11); Be provided with moving contact torsion spring deck (13) between the tripping jointed shaft (7) on central axle sleeve (6) right side and the moving contact installation shaft (9), the outer wall of central axle sleeve (6) is provided with spacing fixture block (14); Tripping (2) is physical member, tripping (2) is provided with hinged through hole (15), " U " type connecting rod penetrates hole (16) and tripping bayonet socket (17), the middle part of snap close (2) is provided with the mount pad (18) that is hinged with central axle sleeve (6), the endoporus of mount pad (18) has the stopper slot (19) that matches with spacing fixture block (14), and the top of snap close (2) is provided with the snap close bayonet socket (20) suitable with tripping bayonet socket (17); The moving contact (21) 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 (22), moving contact torsion spring (22) one ends are stuck on the moving contact (21), the other end is stuck on the moving contact torsion spring deck (13), and an end of moving contact (21) blocks mutually with central axle sleeve (9); Mount pad (18) on the snap close (2) is enclosed within outside the central axle sleeve (9) and can rotates to it, stopper slot (19) is corresponding with spacing fixture block (14), the upper coiling of snap close reduction torsion spring installation shaft (8) has snap close reduction torsion spring (23), one end of snap close reduction torsion spring (23) and snap close reduction torsion spring installation shaft (8) are fixing, and the other end is stuck on the snap close (2).
2. operating mechanism according to claim 1 is characterized in that: is provided with " one " font gap (24) in the middle of the snap close reduction torsion spring installation shaft (8), an end of snap close reduction torsion spring (23) is stuck in the gap (24).
3. operating mechanism according to claim 1 and 2 is characterized in that: between the upper snap close reduction torsion spring installation shaft (8) of support (3) and the central axle sleeve (6) and be equipped with reinforcement (25) between spring base (10) and the central axle sleeve (6).
4. miniature circuit breaker according to claim 1 and 2, it is characterized in that: spring base (10) is for cylindric, the outer wall of spring base (10) is provided with positioning bar (35), and an end of spring (12) is enclosed within spring base (10) and upward and with positioning bar (35) blocks mutually.
5. miniature circuit breaker that comprises the described operating mechanism of any one in the claim 1 to 4, it is characterized in that: described support (3) is hinged in the housing (11), be provided with the baffle plate (26) corresponding with spring base (10) in the housing (11), spring (12) is installed between spring base (10) and the baffle plate (26); Fixed contact (27), magnetictrip (28), arc control device (29) and bimetal leaf (30) are installed in the housing (11), fixed contact (27) is positioned between magnetictrip (28) and the arc control device (29), magnetictrip (28) is corresponding with the bottom of snap close (2), the lower end of snap close (2) is provided with axis hole (31), be inserted with connecting rod (32) in the axis hole (31), the other end of connecting rod (32) at right angles bends and the bimetal leaf that jumps (30) places its side.
6. miniature circuit breaker according to claim 4, it is characterized in that: a sidewall of housing (11) has deep-slotted chip breaker (33), described deep-slotted chip breaker (33) is corresponding with the bottom of snap close (2), and the position of the upper corresponding deep-slotted chip breaker (33) of snap close (2) is provided with interlock jack (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310412.6A CN102881530B (en) | 2012-08-28 | 2012-08-28 | Operating mechanism and miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310412.6A CN102881530B (en) | 2012-08-28 | 2012-08-28 | Operating mechanism and miniature circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN102881530A true CN102881530A (en) | 2013-01-16 |
| CN102881530B CN102881530B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210310412.6A Active CN102881530B (en) | 2012-08-28 | 2012-08-28 | Operating mechanism and miniature circuit breaker |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632897A (en) * | 2013-10-31 | 2014-03-12 | 上海永继电气股份有限公司 | Operating mechanism of miniature circuit breaker |
| CN103928270A (en) * | 2013-12-31 | 2014-07-16 | 上海诺雅克电气有限公司 | Operation mechanism of small breaker |
| CN104201071A (en) * | 2014-07-31 | 2014-12-10 | 浙江天正电气股份有限公司 | Small-sized circuit breaker provided with rapid contact closing mechanism |
| CN104299864A (en) * | 2014-10-21 | 2015-01-21 | 加西亚电子电器有限公司 | Miniature circuit breaker |
| CN105047493A (en) * | 2015-09-18 | 2015-11-11 | 乐清市乐翔电气有限公司 | Low-voltage circuit breaker |
| CN105378888A (en) * | 2013-07-12 | 2016-03-02 | 三菱电机株式会社 | Circuit breaker |
| WO2016074321A1 (en) * | 2014-11-13 | 2016-05-19 | 杭州泰姆电气有限公司 | Breaker operation mechanism |
| CN106653511A (en) * | 2017-02-24 | 2017-05-10 | 德力西电气有限公司 | Novel operation control device for small circuit breaker |
| CN108039309A (en) * | 2017-12-28 | 2018-05-15 | 加西亚电子电器股份有限公司 | A kind of mechanism of leakage circuit breakers |
| CN113745065A (en) * | 2021-08-19 | 2021-12-03 | 浙江合兴电工有限公司 | Small-sized circuit breaker |
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| US4916420A (en) * | 1987-06-09 | 1990-04-10 | Merlin Gerin | Operating mechanism of a miniature electrical circuit breaker |
| CN1409346A (en) * | 2001-09-25 | 2003-04-09 | 莫勒自动系统公司 | Switching mechanism of protective switch |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105378888B (en) * | 2013-07-12 | 2017-10-13 | 三菱电机株式会社 | Circuit-breaker |
| CN105378888A (en) * | 2013-07-12 | 2016-03-02 | 三菱电机株式会社 | Circuit breaker |
| CN103632897B (en) * | 2013-10-31 | 2016-03-09 | 上海永继电气股份有限公司 | A kind of operating mechanism of miniature circuit breaker |
| CN103632897A (en) * | 2013-10-31 | 2014-03-12 | 上海永继电气股份有限公司 | Operating mechanism of miniature circuit breaker |
| CN103928270A (en) * | 2013-12-31 | 2014-07-16 | 上海诺雅克电气有限公司 | Operation mechanism of small breaker |
| CN103928270B (en) * | 2013-12-31 | 2016-04-20 | 上海诺雅克电气有限公司 | The operating mechanism of miniature circuit breaker |
| CN104201071A (en) * | 2014-07-31 | 2014-12-10 | 浙江天正电气股份有限公司 | Small-sized circuit breaker provided with rapid contact closing mechanism |
| CN104299864A (en) * | 2014-10-21 | 2015-01-21 | 加西亚电子电器有限公司 | Miniature circuit breaker |
| CN104299864B (en) * | 2014-10-21 | 2016-01-27 | 加西亚电子电器有限公司 | Miniature circuit breaker |
| WO2016074321A1 (en) * | 2014-11-13 | 2016-05-19 | 杭州泰姆电气有限公司 | Breaker operation mechanism |
| CN105047493A (en) * | 2015-09-18 | 2015-11-11 | 乐清市乐翔电气有限公司 | Low-voltage circuit breaker |
| CN106653511A (en) * | 2017-02-24 | 2017-05-10 | 德力西电气有限公司 | Novel operation control device for small circuit breaker |
| CN108039309A (en) * | 2017-12-28 | 2018-05-15 | 加西亚电子电器股份有限公司 | A kind of mechanism of leakage circuit breakers |
| CN108039309B (en) * | 2017-12-28 | 2023-09-19 | 加西亚电子电器股份有限公司 | Mechanism of leakage circuit breaker |
| CN113745065A (en) * | 2021-08-19 | 2021-12-03 | 浙江合兴电工有限公司 | Small-sized circuit breaker |
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| CN102881530B (en) | 2014-12-17 |
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