CN103903924B - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN103903924B CN103903924B CN201210570735.9A CN201210570735A CN103903924B CN 103903924 B CN103903924 B CN 103903924B CN 201210570735 A CN201210570735 A CN 201210570735A CN 103903924 B CN103903924 B CN 103903924B
- Authority
- CN
- China
- Prior art keywords
- axis
- trip assembley
- assembley therefor
- circuit breaker
- miniature circuit
- 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.)
- Active
Links
Abstract
The present invention discloses a kind of miniature circuit breaker, wherein the handle of quadric chain is around a rotary pair center steering, and form a side link, the main support of quadric chain is around another rotary pair center steering, and forming another side link, moving contact is also arranged on main support taking another rotary pair center as axle. The axis of the longitudinally of the first and second terminals all with the solenoidal axis almost parallel of magnetic trip assembley therefor, quadric chain is positioned at magnetic trip assembley therefor one side with respect to solenoid axis, expulsion element is positioned at magnetic trip assembley therefor opposite side with respect to solenoid axis, hot trip assembley therefor and magnetic trip assembley therefor are spaced apart along the direction of solenoid axis, the direction that handle, connecting rod and main support extend along the thermotropism trip assembley therefor of solenoid axis arranges successively, and main support, moving contact and static contact be isolated position between magnetic trip assembley therefor and hot trip assembley therefor. This device volume reduces, and can realize short circuit and overload duplicate protection, and breaking capacity is strong, and reliability is high.
Description
Technical field
The present invention relates to a kind of miniature circuit breaker.
Background technology
In electrical equipment, for example, in the industries such as communication and control, instrument and meter equipment usually needsThe fault-current protection device of small size, but on market, the current protector of common small size is mainAdopt bimetallic releasing structure, breaking capacity is low, and reliability and electric property are poor.
Summary of the invention
Consider foregoing problems, the present invention's object is to provide a kind of volume little but have high-performanceOvercurrent protective device with high reliability.
Thus, the invention provides a kind of miniature circuit breaker, it comprises the first terminals, the second wiringEnd, magnetic trip assembley therefor, hot trip assembley therefor, moving contact, static contact, expulsion element and moving for drivingThe quadric chain of contact. This quadric chain comprises handle, and this handle is around one of quadric chainRotary pair center steering, and form a side link of quadric chain, the master of this quadric chain props upFrame is around another rotary pair center steering, and forms another side link, and described moving contact is also with described anotherSingle-revolution sub-center is that axle is arranged on described main support, thereby driven by described main support and around instituteState another rotary pair center steering. Wherein, the axle of the longitudinally of the first terminals and the second terminalsLine all with the solenoidal axis almost parallel of magnetic trip assembley therefor, quadric chain is with respect to described helicalThe axis of pipe is positioned at a side of magnetic trip assembley therefor, and expulsion element is positioned at respect to described solenoidal axisThe opposite side of magnetic trip assembley therefor, hot trip assembley therefor and magnetic trip assembley therefor are along described solenoidal axisDirection is spaced apart, and handle, connecting rod and the main support of quadric chain are along described solenoidThe thermotropism trip assembley therefor of the axis direction of extending arrange successively, and main support and moving contact and stationary contactAll isolated positions between magnetic trip assembley therefor and hot trip assembley therefor of head.
Preferably, described the first terminals and the second terminals are arranged in the helical of magnetic trip assembley thereforOne side of the axis of pipe.
Preferably, described expulsion element and described moving contact are adjacent with static contact, make described expulsion elementOpening is along directly facing toward described moving contact and static contact with the direction of described solenoidal axes intersect.
Preferably, the opening of described expulsion element towards direction be with described solenoidal axis hang downDirectly.
Preferably, described expulsion element is arranged as along the direction of described solenoidal axis and at least described theOne of one terminals and described second terminals are overlapping.
Preferably, described hot trip assembley therefor is bimetallic tripping mechanism, this bimetallic tripping mechanism verticalLength direction is roughly vertical with described solenoidal axis.
Preferably, described main support together with described moving contact in the time that this breaker disconnects and described axisDirection intersect.
Preferably, described main support together with described moving contact in the time that this breaker disconnects and described helicalThe direction angulation of the axis of pipe is about 65 °, and the angle of cut-offfing of described moving contact is approximately25°。
Preferably, described main support together with described moving contact in the time of this breaker closing and described axisSubstantially vertical.
Preferably, from the view of facing with the medial surface of miniature circuit breaker lower casing, quadric chainBe positioned at the left side of magnetic trip assembley therefor with respect to described solenoidal axis, and expulsion element is positioned at magnetic dropout groupThe right side of part.
Miniature circuit breaker provided by the invention can obtain following technique effect:
1. significantly reduce the volume of miniature circuit breaker.
2. improve the breaking capacity to short-circuit current.
3. improve electric property: electric life and insulating properties.
Generally speaking, the present invention must ensure to realize all dropouts, deciliter action and haveUnder the condition of high breaking capacity, create unique layout, what make miniature circuit breaker has reduced dress greatlyThe volume of putting. Therefore, miniature circuit breaker provided by the present invention can accomplish that volume reduces, and can do againTo realizing short circuit and overload duplicate protection, and breaking capacity is strong, reliability is high.
Brief description of the drawings
Fig. 1 is the perspective view that miniature circuit breaker of the present invention is shown, has wherein removed upper cover.
Fig. 2 illustrates the top view of the miniature circuit breaker of having removed upper cover of the present invention, its middle-size and small-size opening circuitThe moving contact of device and the static contact state in disconnecting.
Fig. 3 illustrates the top view of the miniature circuit breaker of having removed upper cover of the present invention, its middle-size and small-size opening circuitThe moving contact of device and the static contact state in engaging.
Detailed description of the invention
The embodiment of miniature circuit breaker of the present invention is described hereinafter, with reference to the accompanying drawings.
Be specific detailed description of the invention of the present invention at the embodiment of this record, for the present invention is describedDesign, be all explanatory and exemplary, should not be construed as embodiment of the present invention and the present inventionThe restriction of scope. Except the embodiment of this record, those skilled in the art can also be based on the applicationThe disclosed content of description adopts apparent other technical scheme, and these technical schemes comprise adoptsBy the technical scheme of making any apparent substitutions and modifications of the embodiment in this record.
Fig. 1 is the perspective view that miniature circuit breaker 1 of the present invention is shown, has wherein removed upper cover. Figure2 and 3 is all top views of the miniature circuit breaker 1 of having removed upper cover of the present invention, wherein shown in Fig. 2The state of miniature circuit breaker in disconnecting, and small-sized opening circuit in closed state shown in Fig. 3.
Referring to Fig. 1, the first terminals 4 of miniature circuit breaker 1 of the present invention, the second terminals 10,Magnetic trip assembley therefor 3, hot trip assembley therefor 8, static contact 6, moving contact 7, expulsion element 5 and four connecting rodsMechanism 2 is with mode layout on lower casing 9 of tiling.
With further reference to Fig. 2 and 3, quadric chain 2 comprises handle 21, connecting rod 22 and main support23, for driving moving contact 7 with static contact 6 disjunctions and engaging. Handle 21 is around quadric chain 2A rotary pair center O1Revolution, a side link of formation quadric chain 1, main support 23 enclosesAround another rotary pair center O2Revolution, forms another side link. Moving contact 7 is also with rotary pair centerO2For axle is installed on main support 23, make moving contact 7 driven by main support 23 and in rotary pairHeart O2Revolution, thereby with static contact 6 disjunctions with engage.
Magnetic trip assembley therefor 3 has solenoid 31, for short-circuit protection. In the illustrated embodiment, heat is de-Buckle assembly 8 adopts bimetallic releasing structure, for overload protection. Magnetic trip assembley therefor 3 and hot dropout groupPart 8 all triggers under fault current state that main support 23 rotates and then whole quadric chain 2 moves,To drive moving contact 7. In the time there is short trouble, the moving core 32 of solenoid 31 triggers main support 23Drive the moving contact 7 engaging to thread off. In the time there is overload fault, the bimetallic of magnetic trip assembley therefor 3 is de-Buckle structure pulls hot dropout pull bar 24 and triggers main support 23 and rotate, thereby drives the moving contact engagingThread off.
As Figure 1-3, the axis B of the longitudinally of the first terminals 4 and the second terminals 8 andC all with the axis A almost parallel of solenoid 31, quadric chain 2 is with respect to the axle of solenoid 31Line is positioned at the left side of magnetic trip assembley therefor 3, and that expulsion element 5 is positioned at magnetic with respect to the axis of solenoid 31 is de-The right side of buckle assembly 3. Hot trip assembley therefor 8 is along direction and the magnetic trip assembley therefor of the axis of solenoid 313 is spaced apart, and handle 21, connecting rod 22 and the main support 23 of quadric chain 2 are along axleThe direction that the thermotropism trip assembley therefor of line A extends is arranged successively, and main support 23 and moving contact 7 and quietContact 6 is isolated position between magnetic trip assembley therefor 3 and hot trip assembley therefor 8 all. Of the present inventionMiniature circuit breaker 1 adopts above-mentioned layout can make the volume compact of miniature circuit breaker 1, greatly reduces dressThe volume of putting.
In the illustrated embodiment, expulsion element 5 is arranged as at the direction along axis A and the first terminals 4Overlapping, and expulsion element 5 is adjacent with static contact 6 with moving contact 7, makes the opening edge of expulsion element 5The direction crossing with axis A is directly facing to moving contact 7 and static contact 6. Preferably, expulsion element 5Opening towards direction be vertical with axis A. In the present invention, expulsion element 5 is arranged to directlyFacing to moving contact 7 and static contact 6, just can make to produce in the time of moving contact 7 and static contact 6 disjunctionElectric arc directly enters expulsion element 5, and blow-out efficiency is high, thereby makes the disjunction of miniature circuit breaker of the present inventionShort circuiting arc ability is strong. The above-mentioned layout side that directly faces toward moving contact 7 and static contact 6 of expulsion element 5Formula not only can further reduce the volume of miniature circuit breaker 1, also because can be fast, more effectiveGround blow-out and be conducive to improve the short circuit current breaking capacity of breaker 1.
In addition, as shown in the figure, the longitudinally of bimetallic tripping mechanism is roughly vertical with axis A.
And as shown in Figure 2, the main support 23 of quadric chain 2 is opening circuit together with moving contact 7Crossing with axis A when device disconnects, crossing angle is as shown in the figure through rotary pair center O2With movingThe straight line of the contact point of contact 7 and axis A angulation β, general in the scope of 55 °-75 °,Also, the process rotary pair center O of horizontal direction2Straight line become with the axis A of vertical direction movingContact cut-offs angle generally in the scope of 15 °-35 °, is preferably about 25 °. Especially, as Fig. 3 instituteShow, in the time of breaker closing, main support 23 is substantially vertical with axis A together with moving contact 7.
Although in illustrated explanatory embodiment, the first terminals 4, static contact 6 and expulsion element 5Chamber is positioned at the left side of axis A, and the second terminals 10 and quadric chain 2 are positioned at the right side of axis ASide, 7 of moving contacts (are rotary pair center O around rotating axle2) be also positioned at left side, still, thisThose skilled in the art are easy to just can understand, in the constant situation of the arranged direction of magnetic trip assembley therefor 3Under, the first terminals 4, static contact 6 and Room 5, expulsion element and the second terminals 10 and four connecting rod machinesStructure 2 all can be arranged in respect to axis A the opposition side of the shown position of embodiment, i.e. these partsLayout is equivalent to make mirror image with respect to axis A and changes. The concrete structure of these parts and lower casingStructure Deng other parts is made corresponding change according to the change of layout again.
For quadric chain 2, the present invention is to meet four connecting rods as above to its basic demandOrganization distribution mode, its concrete structure designs on the basis of layout, can be with reference to driving in prior artThe quadric chain of moving moving contact carries out specific design according to layout of the presently claimed invention.
In addition, although can adopting, the first and second terminals 4 and 10 lay respectively at axis A mono-sideLayout, but those skilled in the art can understand, at satisfied the first and second terminals 4 and 10Axis B and the C of longitudinally be all roughly parallel under this condition of axis A, first and second connectLine end 4 and 10 also can will be arranged in the same side of axis A according to the needs of specific design. Put outArc chamber 5 can also be arranged as the direction and one of at least the first terminals and second terminals along axis AOverlapping.
Compared with prior art, the present invention must ensure to realize all dropouts, deciliter action andHave compared with under the condition of high breaking capacity, create unique layout, make the structure of miniature circuit breaker tightGather, greatly reduced the volume of device. Have under the configuration of hot trip assembley therefor and magnetic trip assembley therefor,The miniature circuit breaker of prior art is approximately of a size of 80 × 70 × 18mm3, and that the present invention makes to have is identicalThe miniature circuit breaker of rated current can reach approximately 50 × 40 × 12mm3。
Although compared with prior art, the size of miniature circuit breaker of the present invention greatly reduces, and is dividingCompared with the breaker of cutting capacity, reliability and electric property aspect and same size, improve and improve.For example, because miniature circuit breaker of the present invention has adopted four bar-link drive, therefore, not only improveReliability to route protection, and provide space in the future expanding its function, get an electric shock as auxiliary,Earth leakage protective and Long-distance Control etc. The layout of expulsion element of the present invention also contributes to improve small-sized opening circuitThe breaking capacity of device. Under rated current 220V, compared with the breaker of prior art same size,The performance of miniature circuit breaker of the present invention is more advantageous, is specially: under rated voltage 220V,Design rated current can reach 20A, and design short circuit current breaking capacity can reach 1000A, the electric longevity of designLife can reach 20000 times. Therefore, because miniature circuit breaker volume of the present invention is little, thereby can applyIn the occasion of fault-current protection device that needs small size, for example, can be arranged on wiring board, movable typeConnector socket, and in the panel of instrument and meter, and, because miniature circuit breaker of the present invention hasCompared with high breaking capacity and better electric property, thus can in better degree, meet to small size,The needs of the fault-current protection device of function admirable.
In addition, according to the structure of miniature circuit breaker of the present invention, due to adopted quadric chain andThe above-mentioned specific arrangements of expulsion element, thereby can improve the electric property of miniature circuit breaker, i.e. electric lifeAnd insulating properties.
Embodiment to miniature circuit breaker of the present invention and advantage of the present invention are illustrated above.As mentioned above, as passable in shape, size and position for the specific features of miniature circuit breaker of the present inventionSpecific design is carried out in the effect of the feature of above-mentioned disclosure, and these designs are all that those skilled in the art canRealize. And, each technical characterictic of above-mentioned disclosure that be not limited to disclose with group further featureClose, those skilled in the art also can carry out other group between each technical characterictic according to the object of inventionClose, be as the criterion with the object that realizes the present invention.
Claims (10)
1. a miniature circuit breaker, comprises the first terminals, the second terminals, magnetic trip assembley therefor, heatTrip assembley therefor, moving contact, static contact, expulsion element and for driving the quadric chain of moving contact,
This quadric chain comprises handle, and this handle returns around a rotary pair center of quadric chainTurn, and form a side link of quadric chain, the main support of this quadric chain is around another timeTurn sub-center revolution, and form another side link, described moving contact is also with described another rotary pair centerFor axle is arranged on described main support, thereby driven by described main support and around described another rotary pairCenter steering,
Wherein, the axis of the longitudinally of the first terminals and the second terminals is all with magnetic trip assembley thereforSolenoidal axis almost parallel, quadric chain is positioned at magnetic with respect to described solenoidal axis and threads offOne side of assembly, and expulsion element is positioned at another of magnetic trip assembley therefor with respect to described solenoidal axisSide, hot trip assembley therefor and magnetic trip assembley therefor are spaced apart along the direction of described solenoidal axis, andAnd handle, connecting rod and the main support of quadric chain is de-along the thermotropism of described solenoidal axisThe direction that buckle assembly extends is arranged successively, and main support and moving contact and static contact are all positioned at magnetic dropoutIsolated position between assembly and hot trip assembley therefor.
2. miniature circuit breaker as claimed in claim 1, wherein, described the first terminals and second connectLine end is arranged in both sides or the same side of the solenoidal axis of magnetic trip assembley therefor.
3. miniature circuit breaker as claimed in claim 1, wherein, described expulsion element and described moving contactAdjacent with static contact, make the opening edge of described expulsion element and the direction of described solenoidal axes intersectDirectly facing to described moving contact and static contact.
4. miniature circuit breaker as claimed in claim 3, wherein, the opening of described expulsion element institute towardsDirection be vertical with described solenoidal axis.
5. miniature circuit breaker as claimed in claim 1, wherein, described expulsion element is arranged as described in edgeThe direction of solenoidal axis is overlapping with one of at least described the first terminals and described second terminals.
6. the miniature circuit breaker as described in any one in claim 1-5, wherein, described hot dropout groupPart is bimetallic tripping mechanism, and the longitudinally of this bimetallic tripping mechanism is roughly and described solenoidAxis vertical.
7. the miniature circuit breaker as described in any one in claim 1-5, wherein, described main support withDescribed moving contact is crossing with the direction of described solenoidal axis in the time that this breaker disconnects together.
8. miniature circuit breaker as claimed in claim 7, wherein, described main support and described moving contactTogether in the time that this breaker disconnects and the direction angulation of described solenoidal axis be about 65 °,The angle of cut-offfing that is described moving contact is about 25 °.
9. the miniature circuit breaker as described in any one in claim 1-5, wherein, described main support withDescribed moving contact is substantially vertical with described axis in the time of this breaker closing together.
10. the miniature circuit breaker as described in any one in claim 1-5, wherein, from breaking with small-sizedThe view that the medial surface of road device lower casing is faced, quadric chain is with respect to described solenoidal axisBe positioned at the left side of magnetic trip assembley therefor, and expulsion element is positioned at the right side of magnetic trip assembley therefor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570735.9A CN103903924B (en) | 2012-12-25 | 2012-12-25 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570735.9A CN103903924B (en) | 2012-12-25 | 2012-12-25 | Miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103903924A CN103903924A (en) | 2014-07-02 |
| CN103903924B true CN103903924B (en) | 2016-05-11 |
Family
ID=50995192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210570735.9A Active CN103903924B (en) | 2012-12-25 | 2012-12-25 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103903924B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004009851U1 (en) * | 2004-06-23 | 2004-09-09 | Reményi, Dorottya | Low voltage automatic switch for protecting connections, has magnetic dynamic and thermal releases and a short circuit release with a movable contact |
| CN101752146A (en) * | 2008-12-02 | 2010-06-23 | 施耐德电器工业公司 | Method for improving stability of setting currents of electromagnetic trips of miniature circuit breaker |
| CN101958205A (en) * | 2009-12-09 | 2011-01-26 | 上海诺雅克电气有限公司 | Selective protection circuit breaker |
| CN102610453A (en) * | 2012-03-16 | 2012-07-25 | 任登华 | Series cut-out switches |
| CN203192727U (en) * | 2012-12-25 | 2013-09-11 | 施耐德电器工业公司 | Small circuit breaker |
-
2012
- 2012-12-25 CN CN201210570735.9A patent/CN103903924B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004009851U1 (en) * | 2004-06-23 | 2004-09-09 | Reményi, Dorottya | Low voltage automatic switch for protecting connections, has magnetic dynamic and thermal releases and a short circuit release with a movable contact |
| CN101752146A (en) * | 2008-12-02 | 2010-06-23 | 施耐德电器工业公司 | Method for improving stability of setting currents of electromagnetic trips of miniature circuit breaker |
| CN101958205A (en) * | 2009-12-09 | 2011-01-26 | 上海诺雅克电气有限公司 | Selective protection circuit breaker |
| CN102610453A (en) * | 2012-03-16 | 2012-07-25 | 任登华 | Series cut-out switches |
| CN203192727U (en) * | 2012-12-25 | 2013-09-11 | 施耐德电器工业公司 | Small circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103903924A (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101968181B1 (en) | Low-voltage circuit breaker with residual current tripping device | |
| CN108269717B (en) | Breaker of plastic casing for DC | |
| CN103594297A (en) | Circuit breaker | |
| TWI505589B (en) | Switchgear and switchgear assembly method | |
| CN104425176A (en) | Ring main unit circuit breaker equipped with contact force controller | |
| CN203192727U (en) | Small circuit breaker | |
| CN101625940B (en) | Double-break micro breaker | |
| CN103903924B (en) | Miniature circuit breaker | |
| CN203574568U (en) | AC motor starter | |
| CN201655718U (en) | Selective-protection circuit breaker | |
| CN103094015A (en) | Modularized double breakpoint plastic shell type circuit breaker | |
| CN101958205B (en) | Selective protection circuit breaker | |
| CN107275163B (en) | Circuit breaker and power distribution system | |
| CN206947279U (en) | Breaker and distribution system | |
| CN106571274B (en) | Breaker | |
| CN208706552U (en) | A kind of switch | |
| CN202839450U (en) | Vacuum arc extinguishing chamber | |
| CN206179764U (en) | Side -hanging manner keeps apart split type vacuum circuit breaker of ground connection | |
| CN204794081U (en) | Power consumer boundary load switch with encrypt communication function | |
| CN204794378U (en) | Power consumer boundary load switch | |
| CN205487985U (en) | Multipolar circuit breaker hydraulic circuit | |
| CN219759494U (en) | N-pole break type circuit breaker | |
| CN212062268U (en) | Combined component of solid-sealed polar pole and isolating switch and inflatable cabinet applying combined component | |
| CN207425705U (en) | A kind of combined high-voltage vacuum circuit breaker | |
| CN218447691U (en) | Box-shared quick grounding switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |