CN104377092A - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN104377092A CN104377092A CN201410512817.7A CN201410512817A CN104377092A CN 104377092 A CN104377092 A CN 104377092A CN 201410512817 A CN201410512817 A CN 201410512817A CN 104377092 A CN104377092 A CN 104377092A
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- China
- Prior art keywords
- trip
- ping
- bar
- circuit breaker
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
Abstract
The invention discloses a miniature circuit breaker. The miniature circuit breaker comprises a tripping part and an opening and closing part, wherein the tripping part comprises a movable hanging hole and a tripping rod, the movable hanging hole moves from a first position to a second position under the influence of overcurrent, the front end of the tripping rod is movably connected to the interior of the movable hanging hole, the tripping rod is fixed to a base plate through a first rotary shaft, a first spring is connected to the tail end of the tripping rod, and force enabling the tripping rod to rotate clockwise along the first rotary shaft is supplied by the first spring; the opening and closing part comprises a handle and a connecting piece, the handle rotates in a reciprocating mode between a third position and a fourth position with a second rotary shaft as the center, the connecting piece is movably connected with a protrusion at the lower end of the handle, a guide rod groove is also formed in the lower end of the handle, the tripping rod penetrates through the guide rod groove, a second spring is arranged between the tripping rod and a third rotary shaft located below the tripping rod, force enabling the tripping rod to rotate anticlockwise along the first rotary shaft is supplied by the second spring, and the connecting piece is movably connected to the third rotary shaft and rotates along the third rotary shaft; a wire connecting end is connected to the side wall of the bottom end of the connecting piece and moves along with the connecting piece, the wire connecting end is disconnected with a contact point, and then a circuit is opened.
Description
Technical field
The present invention relates to a kind of circuit breaker, particularly a kind of miniature circuit breaker.
Background technology
Usual miniature circuit breaker (Miniature Circuit Breaker; MCB) be arranged on circuit; to protect family or industrial power distribution disc system, be block the abnormal current that overload, overcurrent or short circuit current and Simple line occur, the device of protection subordinate end or load.
No. 20-0462420th, utility model patent discloses a kind of small-size moulded case circuit breaker, and when circuit occurs abnormal current, tripgear trips.Tripgear by breaking coil, by described breaking coil internal e.m.f. affects movement and when there is abnormal current according to remove trip(ping) bar lower end and breech lock locking direction and pressurize moving coil, there is abnormal current time to promote trip(ping) bar due to thermal deformation top form to the pivotal bimetal leaf in the position of unclamping breech lock.
The small-size moulded case circuit breaker that No. 20-0462420th, the practical new invention of described registration adopts when there is abnormal current, by trip(ping) bar to structure pivotal with the direction of clear-latch lock-out state, comprise the electromagnetic type tripgear possessing breaking coil and movable core, with the heat-sensitive type tripgear possessing bimetal leaf, therefore the reliability of trip operation can be improved, but the mounting structure that shortcoming is tripgear becomes complicated, centered by the hinge axis of breech lock, movable core is positioned at lower end part, bimetal leaf is positioned at upper-end part of driving, so just occupy the installing space that opening and closing utensil is a large amount of, be unfavorable for making miniaturized circuit breaker.
Based on the above, a kind of necessary property of exploitation of small-sized Disjoncteur.
Summary of the invention
The present invention, for solving described problem, proposes a kind of miniature circuit breaker, while being intended to realize circuit breaker miniaturization, ensureing that tripgear still quick and precisely can start when there is abnormal current, improving the reliability of product.
A kind of miniature circuit breaker, comprise trip portion 300 and opening/closing portion 400, wherein, trip portion 300 comprises affects by overcurrent the movable trip(ping) bar 420 be overlapped in described mobile hanging hole 342 of mobile hanging hole 342 and front end being moved to position two by position one, described trip(ping) bar 420 is fixed on substrate 110 by the first rotating shaft 425, described trip(ping) bar end 423 is connected with spring 1, and described spring 1 gives described trip(ping) bar 420 along described first rotating shaft 425) Clockwise rotational force, opening/closing portion 400 comprises the handle 410 carrying out reciprocating rotation centered by the second rotating shaft 418 between position three and position four and the connector 430 be flexibly connected with described handle 410 lower end projection, described handle 410 lower end is also provided with stem guiding trough 415, described trip(ping) bar 420 passes in described stem guiding trough 415, described trip(ping) bar 420 and be positioned at below described trip(ping) bar 420 between the 3rd rotating shaft 440 to be provided with spring 2 450, described spring 2 450 gives described trip(ping) bar 420 along described first rotating shaft 425 counter-rotational forces, described connector 430 is movably connected on described 3rd rotating shaft 440 and rotates along the 3rd rotating shaft 440, wherein, during overcurrent, described mobile hanging hole 342 moves to described position two from described position one, described trip(ping) bar front end is deviate from described mobile hanging hole 342, by the restoring force effect of described spring 2 450, described trip(ping) bar 420 rotates counterclockwise along described first rotating shaft 425, described trip(ping) bar 420 drives described handle 410 to rotate counterclockwise along described second rotating shaft 418, described handle 410 lower end projection is supported described connector 430 upper recess and described connector 430 is moved and rotates along described 3rd rotating shaft 440, described connector 430 bottom sidewall is connected with wire connecting ends 438, move with described connector 430, described wire connecting ends 438 disconnects with contact point, circuit breaker.
Preferably, described miniature circuit breaker, wherein, described trip portion 300 also comprise outer wall be wound with coil 320 oil damper 310 and by overcurrent in described coil 320 affect on establish the armature 340 of described mobile hanging hole 342, described armature 340 affects by overcurrent and moves to described position two by described position one.
Preferably, described miniature circuit breaker, wherein, described coil 320 1 termination load wire, a termination output lead, the described output lead other end is connected to described wire connecting ends 438.
Preferably, described miniature circuit breaker, wherein, described trip(ping) bar 420 comprise be positioned at described stem guiding trough 415 Part I 421, to be bent downwardly along described Part I 421 one end and to be affiliated in the described trip(ping) bar front end of described mobile hanging hole 342, to be bent downwardly along described Part I 421 other end and to be provided with the described trip(ping) bar end 423 of the first shaft hole, described first shaft hole mates with described first rotating shaft 425.
Preferably, described miniature circuit breaker, wherein, be also provided with a cam 416 inside described stem guiding trough 415, described cam 416 compresses described Part I 421 downwards.
Preferably, described miniature circuit breaker, wherein, described handle 410 comprises the parent 411 be sheathed in described second rotating shaft 418, from described parent 411 to the rotary handle 412 of housing extension and the projection that extends to described connector 430 direction from described parent 411, described projection and described connector 430 upper recess match.
Preferably, described miniature circuit breaker, wherein, is also provided with a projection 424 for limiting the sliding scale of the relative described Part I 421 of described stem guiding trough 415 between described Part I 421 with described trip(ping) bar end 423.
Preferably, described miniature circuit breaker, wherein, described connector 430 comprises parallel relative the first side wall 431 and the second sidewall 432, and connect the 3rd sidewall of described the first side wall 431 and described second sidewall 432, described the first side wall 431 is equipped with described groove with described second sidewall 432 upper end, and described 3rd side wall lower ends surface is provided with described wire connecting ends 438.
Preferably, described miniature circuit breaker, wherein, between described projection and described the first side wall 431 and described second sidewall 432, angle is less than 180 °.
Preferably, described miniature circuit breaker, wherein, described wire connecting ends 438 is touched with the fixed contact 224 be located in housing and is connected, and described fixed contact 224 is electrically connected on power supply.
The beneficial effect of miniature circuit breaker provided by the invention: trip portion and the mutual organically of opening/closing portion start, and quick and precisely can perform trip operation.
Accompanying drawing explanation
The surface structure schematic diagram that Fig. 1 is the miniature circuit breaker described in one embodiment of the invention;
The internal structure schematic diagram that Fig. 2 is the miniature circuit breaker described in one embodiment of the invention;
Fig. 3 is the decomposing schematic representation to Fig. 2;
Fig. 4 is the miniature circuit breaker normal current flow view described in one embodiment of the invention;
Fig. 5 for described in one embodiment of the invention under normal current flow state, operating personnel operate rotary handle cause trip state;
Fig. 6 for described in one embodiment of the invention when abnormal current occurs, trip(ping) bar unlocks and is rotated counterclockwise schematic diagram;
Fig. 7 is one embodiment of the invention, under the state being presented at Fig. 6, by the recuperability of spring two, and the process that connector and trip(ping) bar turn clockwise;
Under the state that Fig. 8 shows Fig. 7, rotary handle and trip(ping) bar linkage rotation form tripped condition.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification word to make those skilled in the art.
1 to accompanying drawing 8 is specifically described the formation of miniature circuit breaker disclosed in this invention and effect by reference to the accompanying drawings.
With reference to shown in Fig. 1, for miniature circuit breaker overall appearance structural representation of the present invention, miniature circuit breaker of the present invention comprises: sidewall offers the substrate 110 of mains side port 220 and can fasten with described substrate 110 the dismountable lid 120 be integrated, and described substrate 110 fastens with described lid 120 and forms box 100:
With reference to shown in Fig. 2, for miniature circuit breaker internal structure schematic diagram of the present invention, as can be seen from the figure, port part 200 is made up of the load-side port 210 being positioned at described substrate 110 side and the mains side port 220 that is positioned at described substrate 110 opposite side, described load-side port 210 and mains side port 220 respectively by the 1st terminal 211,221 be installed on substrate 110, and with terminal clamp 213,223 rotation interlock lifting the 2nd terminal 212,222 form.
With reference to shown in Fig. 3, for miniature circuit breaker exploded view of the present invention, as can be seen from the figure, described load-side port 210 and mains side port 220 are energized, when abnormal currents such as load-side generation overcurrent or short circuits, described trip portion 300 removes the lock-out state with trip(ping) bar 420, and allow the mechanism of opening/closing portion 400 start, wire connecting ends 438 is separated (see Fig. 4) with the fixed contact 224 of mains side port 220.
3 to accompanying drawing 8 illustrates concrete structure and the effect of trip portion 300 and opening/closing portion 400 in miniature circuit breaker internal structure disclosed in this invention by reference to the accompanying drawings.
The following describes formation and the effect of trip portion 300.
Trip portion 300 comprises affects by overcurrent the movable trip(ping) bar 420 be overlapped in described mobile hanging hole 342 of mobile hanging hole 342 and front end being moved to position two by position one, described trip(ping) bar 420 is fixed on substrate 110 by the first rotating shaft 425, described trip(ping) bar end 423 is connected with spring 1, and described spring 1 gives described trip(ping) bar 420 along described first rotating shaft 425 Clockwise rotational force; Trip portion 300 also comprise outer wall be wound with coil 320 oil damper 310 and by overcurrent in described coil 320 affect on establish the armature 340 of described mobile hanging hole 342, described armature 340 affects by overcurrent and moves to described position two by described position one.Described coil 320 1 termination load wire, a termination output lead, the described output lead other end is connected to wire connecting ends 438.
Shown in Figure 4, when circuit is normal, described coil 320 passes through rated current, the electromotive force that electric current in coil 320 produces is less than elastomeric element elastic force, now trip(ping) bar 420 remains in mobile hanging hole 342, the end of trip(ping) bar 420 forms lock pawl 422a and keeps lock-out state, and now opening/closing portion 400 remains on on-position.
When load-side accesses overcurrent to breaking coil 320, breaking coil 320 can there is the electromotive force be in proportion with electric current, if electromotive force exceedes the restoring force size of elastomeric element for the effect of armature 340, then oil damper 310 inner plunger moves, pole piece 314 and plunger spacing reduce, and the magnetic on pole piece 314 makes the head 341 of armature 340 move towards the direction of pole piece 314.Be moved the trip(ping) bar 420 that hanging hole 342 locks to unlock state, trip.
According to the formation of described trip portion 300, oil damper 310 and armature 340 are arranged side by side, and can reduce installing space, and on on-position, Absorbable organic halogens ground is fixed on tram armature 340, and when connecting overcurrent, tripped condition then can rapid triggering start.
The following describes formation and the effect of described opening/closing portion 400.
Opening/closing portion 400 comprises the handle 410 carrying out reciprocating rotation centered by the second rotating shaft 418 between position three and position four and the connector 430 be flexibly connected with described handle 410 lower end projection, described handle 410 comprises the parent 411 be sheathed in described second rotating shaft 418, from described parent 411 to the rotary handle 412 of housing extension and the projection that extends to described connector 430 direction from described parent 411, described projection and described connector 430 upper recess match.Described handle 410 lower end is also provided with stem guiding trough 415, described trip(ping) bar 420 passes in described stem guiding trough 415, described trip(ping) bar 420 comprises the Part I 421 being positioned at handle 410 bottom guide bar groove 415, be bent downwardly along described Part I 421 one end and be affiliated to the described trip(ping) bar front end in described mobile hanging hole 342, be bent downwardly along described Part I 421 other end and be provided with the described trip(ping) bar end 423 of the first shaft hole, described first shaft hole mates with described first rotating shaft 425, a cam 416 is also provided with inside described stem guiding trough 415, described cam 416 compresses described Part I 421 downwards.A projection 424 is also provided with for limiting the sliding scale of the relative described Part I 421 of described stem guiding trough 415 between described Part I 421 with described trip(ping) bar end 423.Described trip(ping) bar 420 and be positioned at below described trip(ping) bar 420 between the 3rd rotating shaft 440 to be provided with spring 2 450, described spring 2 450 gives described trip(ping) bar 420 along described first rotating shaft 425 counter-rotational forces, and described connector 430 is movably connected on described 3rd rotating shaft 440 and rotates along the 3rd rotating shaft 440; Described connector 430 comprises parallel relative the first side wall 431 and the second sidewall 432, and connect the 3rd sidewall of described the first side wall 431 and described second sidewall 432, described the first side wall 431 is equipped with described groove with described second sidewall 432 upper end, and described 3rd side wall lower ends surface is provided with wire connecting ends 438.Between described projection and described the first side wall 431 and described second sidewall 432, angle is less than 180 °.
The locked groove 421a for locking spring 2 450 upper end 451 is established in described Part I 421.The pars intermedia of trip(ping) bar end 423 forms the hinge ball 423a of insertion first rotating shaft 425, and the lower end of trip(ping) bar end 423 is provided with the fixed lobe 423b for fixing described spring 1 side.
Projection 424 is positioned at the right side of described Part I 421, and described projection 424 makes handle 410 towards the second projection 414, and the rotating range of handle 410 on limit trip position.
Described handle 410, centered by the second rotating shaft 418, by rotating rotary handle 412, makes circuit breaker switch between on-position and trip position.Parent 411 obtains resiliency supported by the direction that torsion spring 419 is rotating to trip position.
And what what described the first side wall 431 and described second sidewall 432 upper recess matched extended to described connector 430 direction from described parent 411 is provided with the stem guiding trough 415 guiding trip(ping) bar 420 to rotate between first protruding 413 and described second projection 414, inside the parent 411 forming described stem guiding trough 415, when having handle 410 to rotate to on-position, by the cam 416 of the Part I 421 of trip(ping) bar 420 pressurization downwards.
Form rotating shaft sticking department 436,437 on the left of the pars intermedia of described the first side wall 431 and the second sidewall 432, described rotating shaft sticking department can make connector 430 be supported in the 3rd rotating shaft 440 place and rotate along described 3rd rotating shaft 440.Described rotating shaft sticking department 436,437 possesses upper end and is plugged, the hook-type state that lower end is open, and medial surface is circular, supports the 3rd rotating shaft 440 of installing inside it with rotating state.
With reference to figure 4, when carrying out the conversion between on-position and trip position, substrate 110 described in described second sidewall 432 sliding contact, guide rod portion 115 guides described connector 430 to move.
Described 3rd rotating shaft 440 fixed support spring 2 450 lower end 452, the lock shaft 444 that described 3rd rotating shaft 440 is formed by the side of columnar matrix 441, the axis body 442 laterally passed from described matrix 441, the shrinkage pool 443 caved inward in the side of described matrix 441, shrinkage pool 443, the lower end 452 of spring 2 450 is locked in described lock shaft 444 by described shrinkage pool 443.
Described spring 2 450 for guarantee described between angle be less than 180 °, described spring 1 upper end 451 and lower end 452 are respectively by the lock slots 421a of trip(ping) bar 420 and lock shaft 444 fixed support of the 3rd rotating shaft 440.Now, on on-position and trip position, first projection 413 of handle 410 and the first side wall 431 of the second projection 414, connector 430, are fixed with bending form centered by 414a to be connected the hinge 413a of handle 410 and connector 430 with the second sidewall 432.
Described spring 1, carries out resiliency supported to the direction towards handle 410 to trip(ping) bar 420, plays the effect of trip(ping) bar 420 involution to original position of driving triggering.The left side of spring 1 is inserted in the fixed lobe 423b of trip(ping) bar 420, and the right side of spring 1 leans on the side of the support portion 112 on substrate 110 to support.
The position that the left and right sides of described spring 1 is fixing is described above, when being rotated by trip operation trip(ping) bar 420, the left side Absorbable organic halogens of spring 1 is fixed on trip(ping) bar 420, the side of the right side supported portion 112 of spring 1 supports, when spring 1 resets after compressing during starting tripping, trip(ping) bar 420 plays recuperability.
Below, with reference to figure 4 to Fig. 8, when connection overcurrent is described stage by stage, the process that trip operation realizes.
During overcurrent, described mobile hanging hole 342 moves to described position two from described position one, described trip(ping) bar front end is deviate from described mobile hanging hole 342, by the restoring force effect of described spring 2 450, described trip(ping) bar 420 rotates counterclockwise along described first rotating shaft 425, described trip(ping) bar 420 drives described handle 410 to rotate counterclockwise along described second rotating shaft 418, described handle 410 lower end projection is supported described connector 430 upper recess and described connector 430 is moved and rotates along described 3rd rotating shaft 440, described connector 430 bottom sidewall is connected with wire connecting ends 438, described wire connecting ends 438 is touched with the fixed contact 224 be located in housing and is connected, described fixed contact 224 is electrically connected on power supply.Move with described connector 430, described wire connecting ends 438 disconnects with contact point, circuit breaker.
Fig. 4 shows the state that normal current passes through, now wire connecting ends 438 and fixed contact 224 are in the state of connection, armature 340 head 341 rotates towards the direction away from pole piece 314, and the lock pawl 422a of trip(ping) bar 420 keeps the state locked by the mobile hanging hole 342 of armature 340.Now, the upper end of the Part I 421 of trip(ping) bar 420, in the inside of the stem guiding trough 415 of handle 410, keeps the state being close to cam 416, and 410 positions of shaking hands keep fixing.
Fig. 5 is presented at normal current by under state, because operating personnel operate the situation that rotary handle 412 causes tripping, under the state that trip(ping) bar 420 is locked by armature 340, if handle 410 is rotated counterclockwise by operating personnel, shake hands the hinge portion 413a of 410 lower ends, 414a and connector 430 upper end 434, 435 are connected, in the first protruding 413 and second projection 414 of handle 410, till the first side wall 431 of connector 430 and the second sidewall 432 are formed before straight line, wire connecting ends 438 and fixed contact 224 are in the state of connection, but when handle 410 continues to rotate, under the tension force of spring 2 450, connector 430 can lift movement upward, wire connecting ends 438 is separated with fixed contact 224, form tripped condition.
When Fig. 6 is presented at abnormal current generation, due to the action of trip portion 300, the situation that trip(ping) bar 420 also rotates counterclockwise with the latch-release of armature 340; Under the state that Fig. 7 is presented at Fig. 6, by the recuperability of spring 2 450, the process that connector 430 and trip(ping) bar 420 turn clockwise; Under the state that Fig. 8 shows Fig. 7, rotary handle 412 and trip(ping) bar 420 link, and handle 410 rotates the situation forming tripped condition.
When connecting overcurrent, if the head 431 of armature 340 moves to pole piece 413 direction, the trip(ping) bar 420 locked by the mobile hanging hole 342 of armature 340 is because the tension force of spring 2 450, be rotated counterclockwise centered by the first rotating shaft 425, Compress Spring 1, simultaneously on on-position, the restraining force of the trip(ping) bar 420 of constraint handle 410 is removed, handle 410 torsion spring 419 elastic force and therefore, under the recuperability of spring 1 adding gesture, rotate to trip position (counterclockwise).
Described handle 410 drives described connector 430 to rotate, pull upward under spring 2 450 acts on, causing wire connecting ends 438 to be separated with fixed contact 224, also slides in the guide rod portion 115 that the left contact substrate 110 of now the second sidewall 432 of connector 430 is formed.
As shown in Figure 7, the position that the upper end of Part I 421 rotates to stem guiding trough 415 locked stops described trip(ping) bar 420.
After trip operation occurs, through certain hour, breaking coil 320 no longer produces electromotive force, described trip portion 300 can return to on-position, as shown in Figure 5.
In sum, the present invention is when connecting overcurrent, and under the mechanism of opening/closing portion 400, trip operation can realize fast, and homing action also accurately carries out, and improves the reliability of product.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification and execution mode utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a miniature circuit breaker, is characterized in that, comprises,
Trip portion (300), comprise affecting by overcurrent and move to the mobile hanging hole (342) of position two and front end activity by position one and be overlapped in trip(ping) bar (420) in described mobile hanging hole (342), described trip(ping) bar (420) is fixed on substrate (110) by the first rotating shaft (425), described trip(ping) bar end (423) is connected with spring one (460), and described spring one (460) gives described trip(ping) bar (420) along described first rotating shaft (425) Clockwise rotational force;
Opening/closing portion (400), comprise the handle (410) carrying out reciprocating rotation centered by the second rotating shaft (418) between position three and position four and the connector (430) be flexibly connected with described handle (410) lower end projection, described handle (410) lower end is also provided with stem guiding trough (415), described trip(ping) bar (420) passes in described stem guiding trough (415), described trip(ping) bar (420) and be positioned at described trip(ping) bar (420) below the 3rd rotating shaft (440) between be provided with spring two (450), described spring two (450) gives described trip(ping) bar (420) along described first rotating shaft (425) counter-rotational forces, described connector (430) is movably connected on described 3rd rotating shaft (440) and rotates along the 3rd rotating shaft (440),
Wherein, during overcurrent, described mobile hanging hole (342) moves to described position two from described position one, described trip(ping) bar front end is deviate from described mobile hanging hole (342), by the restoring force effect of described spring two (450), described trip(ping) bar (420) rotates counterclockwise along described first rotating shaft (425), described trip(ping) bar (420) drives described handle (410) to rotate counterclockwise along described second rotating shaft (418), described handle (410) lower end projection supports described connector (430) upper recess makes described connector (430) move and rotate along described 3rd rotating shaft (440), described connector (430) bottom sidewall is connected with wire connecting ends (438), move with described connector (430), described wire connecting ends (438) and contact point disconnect, circuit breaker.
2. miniature circuit breaker as claimed in claim 1, it is characterized in that, described trip portion (300) also comprise outer wall be wound with coil (320) oil damper and by the armature (340) overcurrent impact in described coil (320) being established described mobile hanging hole (342), described armature (340) affects by overcurrent and moves to described position two by described position one.
3. miniature circuit breaker as claimed in claim 2, it is characterized in that, described coil (320) termination load wire, a termination output lead, the described output lead other end is connected to described wire connecting ends (438).
4. miniature circuit breaker as claimed in claim 1, it is characterized in that, described trip(ping) bar (420) comprise be positioned at described stem guiding trough (415) Part I (421), to be bent downwardly along described Part I (421) one end and to be affiliated in the described trip(ping) bar front end of described mobile hanging hole (342), to be bent downwardly along described Part I (421) other end and to be provided with the described trip(ping) bar end (423) of the first shaft hole, described first shaft hole mates with described first rotating shaft (425).
5. miniature circuit breaker as claimed in claim 4, is characterized in that, described stem guiding trough (415) inner side is also provided with a cam (416), and described cam (416) compresses described Part I (421) downwards.
6. miniature circuit breaker as claimed in claim 5, it is characterized in that, described handle (410) comprises the parent (411) be sheathed on described second rotating shaft (418), from described parent (411) to the rotary handle (412) of housing extension and the projection that extends to described connector (430) direction from described parent (411), described projection and described connector (430) upper recess match.
7. miniature circuit breaker as claimed in claim 6, it is characterized in that, being also provided with a projection (424) between described Part I (421) with described trip(ping) bar end (423) for limiting the sliding scale of the relative described Part I (421) of described stem guiding trough (415).
8. miniature circuit breaker as claimed in claim 6, it is characterized in that, described connector (430) comprises parallel relative the first side wall (431) and the second sidewall (432), and connect the 3rd sidewall of described the first side wall (431) and described second sidewall (432), described the first side wall (431) and described second sidewall (432) upper end are equipped with described groove, and described 3rd side wall lower ends surface is provided with described wire connecting ends (438).
9. miniature circuit breaker as claimed in claim 8, is characterized in that, between described projection and described the first side wall (431) and described second sidewall (432), angle is less than 180 °.
10. miniature circuit breaker as claimed in claim 8, it is characterized in that, described wire connecting ends (438) is touched with the fixed contact be located in housing (224) and is connected, and described fixed contact (224) is electrically connected on power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512817.7A CN104377092B (en) | 2014-09-29 | 2014-09-29 | A kind of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512817.7A CN104377092B (en) | 2014-09-29 | 2014-09-29 | A kind of miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104377092A true CN104377092A (en) | 2015-02-25 |
| CN104377092B CN104377092B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410512817.7A Expired - Fee Related CN104377092B (en) | 2014-09-29 | 2014-09-29 | A kind of miniature circuit breaker |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09161645A (en) * | 1995-12-07 | 1997-06-20 | Fuji Electric Co Ltd | Circuit breaker switching operation mechanism |
| CN101331574A (en) * | 2005-10-19 | 2008-12-24 | 伊顿公司 | Circuit breaker intermediate latch stop |
| CN201838528U (en) * | 2010-09-16 | 2011-05-18 | 方华朋 | Minitype circuit breaker |
| CN204215986U (en) * | 2014-09-29 | 2015-03-18 | 江苏普华力拓电器股份有限公司 | A kind of miniature circuit breaker |
-
2014
- 2014-09-29 CN CN201410512817.7A patent/CN104377092B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09161645A (en) * | 1995-12-07 | 1997-06-20 | Fuji Electric Co Ltd | Circuit breaker switching operation mechanism |
| CN101331574A (en) * | 2005-10-19 | 2008-12-24 | 伊顿公司 | Circuit breaker intermediate latch stop |
| CN201838528U (en) * | 2010-09-16 | 2011-05-18 | 方华朋 | Minitype circuit breaker |
| CN204215986U (en) * | 2014-09-29 | 2015-03-18 | 江苏普华力拓电器股份有限公司 | A kind of miniature circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104377092B (en) | 2016-08-31 |
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