CN102881530B - Operating mechanism and miniature circuit breaker - Google Patents
Operating mechanism and miniature circuit breaker Download PDFInfo
- Publication number
- CN102881530B CN102881530B CN201210310412.6A CN201210310412A CN102881530B CN 102881530 B CN102881530 B CN 102881530B CN 201210310412 A CN201210310412 A CN 201210310412A CN 102881530 B CN102881530 B CN 102881530B
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- snap close
- moving contact
- torsion spring
- tripping
- support
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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 latch (1) 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 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, does not also carry out spacing to snap close, and in the process of threading off and reset, snap close can produce impact to the parts of periphery, and cause the positional precision of the parts such as support, moving contact to produce deviation, failure rate is high.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides a kind of operating mechanism and the miniature circuit breaker of this operating mechanism is installed, mainly solve existing miniature circuit breaker and false tripping easily occurs or insensitive, that assembly difficulty is large and failure rate is high problem of threading off.This operating mechanism changes the structure of support, compact conformation, is convenient to install; This miniature circuit breaker 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 the tripping jointed shaft of the band central axle sleeve of centre bore and distribution triangular in shape, snap close reduction torsion spring installation shaft and moving contact installation shaft, the support at tripping jointed shaft place extends outward a spring base, mounting spring between spring base and housing; Tripping jointed shaft on the right side of central axle sleeve and be provided with moving contact torsion spring deck between 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 be hinged with central axle sleeve, the endoporus of mount pad has the stopper slot matched with spacing fixture block, 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, and one end of moving contact is blocked mutually with central axle sleeve; Mount pad on snap close is enclosed within central axle sleeve and also can rotates to it outward, stopper slot is corresponding with spacing fixture block, 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, the other end is stuck on snap close, described spacing fixture block bottom end face be provided with the moving contact stopper slot matched with moving contact upper end between pedestal upper end face, described moving contact upper end sticks in described moving contact stopper slot.
[0005]be provided with " one " font 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.
Described support is equipped with reinforcement between snap close reduction torsion spring installation shaft and central axle sleeve and between spring base and central axle sleeve.
Described spring base is cylindric, and the outer wall of spring base is provided with positioning bar, and one end of spring to be enclosed within spring base and to block mutually with positioning bar.
Comprise a miniature circuit breaker for aforesaid operations mechanism, described support is hinged in housing, and be provided with the baffle plate corresponding with spring base in housing, spring fitting is between spring base and baffle plate; 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.
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, carries out spacing to snap close, and in the process of threading off and reset, snap close actuating length is less, the impulsive force produced the parts of periphery is more weak, dependable performance, failure rate is low.
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 21.
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 spacing fixture block of 14-, the hinged through hole of 15-, 16-" U " type connecting rod penetrates hole, 17-tripping bayonet socket, 18-mount pad, 19-stopper slot, 20-snap close bayonet socket, 21-moving contact, 22-moving contact torsion spring, 23-snap close reduction torsion spring, 24-gap, 25-reinforcement, 26-baffle plate, 27-fixed contact, 28-magnetictrip, 29-arc control device, 30-bimetal leaf, 31-axis hole, 32-connecting rod, 33-deep-slotted chip breaker, 34-links jack, 35-positioning bar.
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 the tripping jointed shaft 7 of the band 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 place extends outward a spring base 10, mounting spring 12 between spring base 10 and housing 11; Tripping jointed shaft 7 on the right side of central axle sleeve 6 and be provided with moving contact torsion spring deck 13 between 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 1 is provided with the mount pad 18 be hinged with central axle sleeve 6, the endoporus of mount pad 18 has the stopper slot 19 matched with spacing fixture block 14, and the top of snap close 1 is provided with the snap close bayonet socket 20 suitable with tripping bayonet socket 17; Moving contact installation shaft 9 is provided with the moving contact 21 that can rotate, moving contact installation shaft 9 outer disk is wound with moving contact torsion spring 22, moving contact torsion spring 22 one end is stuck on moving contact 21, and the other end is stuck on moving contact torsion spring deck 13, one end and the central axle sleeve 6 phase card of moving contact 21; Mount pad 18 on snap close 1 is enclosed within outside central axle sleeve 6 and also can rotates to it, stopper slot 19 is corresponding with spacing fixture block 14, in snap close reduction torsion spring installation shaft 8, coiling has snap close reduction torsion spring 23, one end and the snap close reduction torsion spring installation shaft 8 of snap close reduction torsion spring 23 are fixed, the other end is stuck on snap close 1, described spacing fixture block 14 bottom end face be provided with the moving contact stopper slot matched with moving contact 21 upper end between support 3 upper surface, described moving contact 21 upper end sticks in described moving contact stopper slot.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 21 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 22 between moving contact 21 and fixed contact 27, make, between moving contact 21 and fixed contact 27, there is certain backlash compensation, to moving contact 21 and fixed contact 27 position accuracy demand lower, easily assemble.Snap close reduction torsion spring 23 is easy for installation, carries out spacing to snap close 1, and in the process of threading off and reset, snap close 1 actuating length is less, the impulsive force produced the parts of periphery is more weak, dependable performance, failure rate is low.
Be provided with " one " font gap 24 in the middle of described snap close reduction torsion spring installation shaft 8, one end of snap close reduction torsion spring 23 is stuck in gap 24.Snap close reduction torsion spring 23 convenience is installed.
Described support 3 is equipped with reinforcement 25 between snap close reduction torsion spring installation shaft 8 and central axle sleeve 6 and between spring base 10 and central axle sleeve 6.Reinforcement 25 adds 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, one end of spring 12 to be enclosed within spring base 10 and with positioning bar 35 phase card.Positioning bar 35 plays the role of positioning, and avoids spring 12 to come off.
Comprise the miniature circuit breaker stating operating mechanism, described support 3 is hinged in housing 11, is provided with the baffle plate 26 corresponding with spring base 10 in housing 11, and spring 12 is arranged between spring base 10 and baffle plate 26; Fixed contact 27, magnetictrip 28, arc control device 29 and bimetal leaf 30 are installed in housing 11, fixed contact 27 is between magnetictrip 28 and arc control device 29, magnetictrip 28 is corresponding with the bottom of snap close 1, the lower end of snap close 1 is provided with axis hole 31, be inserted with connecting rod 32 in axis hole 31, the other end of connecting rod 32 at right angles bends and the bimetal leaf 30 that jumps is placed in its side.This miniature 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 33, and described deep-slotted chip breaker 33 is corresponding with the bottom of snap close 1, and on snap close 1, the position of corresponding deep-slotted chip breaker 33 is provided with interlock jack 34.Pivot pin can be utilized to pass deep-slotted chip breaker 33 and interlock jack 34, interlock of threading off when two or three miniature circuit breakers use side by side, or support the use with earth leakage protective device.
Claims (6)
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 the band central axle sleeve (6) of 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) at tripping jointed shaft (7) place extends outward a spring base (10), mounting spring (12) between spring base (10) and 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 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 (1) is provided with the mount pad (18) be hinged with central axle sleeve (6), the endoporus of mount pad (18) has the stopper slot (19) matched with spacing fixture block (14), and the top of snap close (1) is provided with the snap close bayonet socket (20) suitable with tripping bayonet socket (17), moving contact installation shaft (9) is provided with the moving contact (21) that can rotate, moving contact installation shaft (9) outer disk is wound with moving contact torsion spring (22), moving contact torsion spring (22) one end is stuck on moving contact (21), the other end is stuck on moving contact torsion spring deck (13), and one end of moving contact (21) is blocked mutually with central axle sleeve (6), mount pad (18) on snap close (1) is enclosed within central axle sleeve (6) and also can rotates to it outward, 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 fixed, the other end is stuck on snap close (1), described spacing fixture block (14) bottom end face be provided with the moving contact stopper slot matched with moving contact (21) upper end between support (3) upper surface, described moving contact (21) upper end sticks in described moving contact stopper slot.
2. operating mechanism according to claim 1, it is characterized in that: be provided with " one " font gap (24) in the middle of snap close reduction torsion spring installation shaft (8), one end of snap close reduction torsion spring (23) is stuck in gap (24).
3. operating mechanism according to claim 1 and 2, is characterized in that: support (3) is upper is equipped with reinforcement (25) between snap close reduction torsion spring installation shaft (8) and central axle sleeve (6) and between spring base (10) and central axle sleeve (6).
4. operating mechanism 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 one end of spring (12) is enclosed within spring base (10) and goes up and block mutually with positioning bar (35).
5. one kind comprises the miniature circuit breaker of operating mechanism described in any one in Claims 1-4, it is characterized in that: described support (3) is hinged in housing (11), be provided with the baffle plate (26) corresponding with spring base (10) in housing (11), spring (12) is arranged between spring base (10) and baffle plate (26); Fixed contact (27), magnetictrip (28), arc control device (29) and bimetal leaf (30) are installed in housing (11), fixed contact (27) is positioned between magnetictrip (28) and arc control device (29), magnetictrip (28) is corresponding with the bottom of snap close (1), the lower end of snap close (1) is provided with axis hole (31), be inserted with connecting rod (32) in axis hole (31), the other end of connecting rod (32) at right angles bends and the bimetal leaf that jumps (30) is placed in its side.
6. miniature circuit breaker according to claim 5, 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 (1), and the position of the upper corresponding deep-slotted chip breaker (33) of snap close (1) 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 |
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| CN102881530A CN102881530A (en) | 2013-01-16 |
| CN102881530B true 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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| CN (1) | CN102881530B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5422086B1 (en) * | 2013-07-12 | 2014-02-19 | 三菱電機株式会社 | 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 |
| 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 |
| CN104201071B (en) * | 2014-07-31 | 2016-05-04 | 浙江天正电气股份有限公司 | A kind of miniature circuit breaker with contact fast closing mechanism |
| CN104299864B (en) * | 2014-10-21 | 2016-01-27 | 加西亚电子电器有限公司 | Miniature circuit breaker |
| CN104319203B (en) * | 2014-11-13 | 2017-08-25 | 杭州泰姆电气有限公司 | Circuit breaker operation mechanism |
| CN105047493B (en) * | 2015-09-18 | 2017-10-03 | 乐清市乐翔电气有限公司 | A kind of low-voltage circuit breaker |
| CN106653511B (en) * | 2017-02-24 | 2019-12-27 | 德力西电气有限公司 | Novel operation control device for miniature circuit breaker |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102543603A (en) * | 2012-01-20 | 2012-07-04 | 浙江鼎威科技有限公司 | Ultrathin minitype breaker |
| CN202839493U (en) * | 2012-08-28 | 2013-03-27 | 浙江天正电气股份有限公司 | Operating mechanism and miniature breaker |
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2012
- 2012-08-28 CN CN201210310412.6A patent/CN102881530B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102543603A (en) * | 2012-01-20 | 2012-07-04 | 浙江鼎威科技有限公司 | Ultrathin minitype breaker |
| CN202839493U (en) * | 2012-08-28 | 2013-03-27 | 浙江天正电气股份有限公司 | Operating mechanism and miniature breaker |
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| Publication number | Publication date |
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| CN102881530A (en) | 2013-01-16 |
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