CN104465247B

CN104465247B - The hot type adjustable tripping device of miniature circuit breaker

Info

Publication number: CN104465247B
Application number: CN201410853389.4A
Authority: CN
Inventors: 卢科军; 严鹏斌
Original assignee: Noark Electrics Shanghai Co Ltd; Shanghai Dianke Electrical Technology Co Ltd
Current assignee: Noark Electrics Shanghai Co Ltd; Shanghai Dianke Electrical Technology Co Ltd
Priority date: 2014-12-30
Filing date: 2014-12-30
Publication date: 2016-05-11
Anticipated expiration: 2034-12-30
Also published as: EP3242313B1; EP3242313A1; EP3242313A4; WO2016107364A1; ES2785406T3; CN104465247A

Abstract

The present invention has disclosed a kind of hot type adjustable tripping device of miniature circuit breaker, is arranged in the pedestal of miniature circuit breaker, comprising: pedestal, tripping mechanism, thermal deformation element and governor motion. Tripping mechanism has the trip link stretching out. Thermal deformation element closes on trip link setting, between thermal deformation element and trip link, retains interval. Governor motion regulates the distance at the interval between trip link and thermal deformation element. Electric current in the loop that miniature circuit breaker accesses makes the distortion of thermal deformation element heating, after thermal deformation deformed element, moves towards trip link, contacts and promote trip link with trip link, triggers tripping mechanism and threads off. Distance between governor motion adjusting thermal deformation element and trip link is with the size of setting current in regulating loop. The present invention utilizes rigid member to regulate the distance between trip link and thermal deformation element, can guarantee that in operating each time, the distance between thermal deformation element and trip link is fixed, and the present invention is applicable to motor.

Description

The hot type adjustable tripping device of miniature circuit breaker

Technical field

The present invention relates to Low Voltage Electrical Apparatus, more particularly, relate to the trip gear in breaker.

Background technology

Breaker is protection switch main in low-voltage network, for circuit provides overload and short-circuit protection.In order to expand the scope of application of breaker, according to the protection feature of the size of overload current or consumer,Need to there is the function of adjustable breaker setting current. Especially when protection in, is provided for motor, forAdapt to the apolegamy of different capacity motor, need to be provided with certain electric current adjustable range, according to electronicMachine load current value is selected the value of setting current scope zone line as far as possible.

In mold cased circuit breaker, had adjustable hot type electrical apparatus release at present, mold cased circuit breaker is mainStill be applied to products with larger capacity, continually developing and answering along with current household electrical appliance and small-capacity productWith, and the installation requirement of medelling product, mold cased circuit breaker can not satisfy the demands. And orderAlthough the electronic type tripping system operation precision of front application is mostly high, very high to the requirement of components and parts,Electromagnetic compatibility also difficulty passes through, and is also difficult to arrange in the confined space of modularization product, can not be really realThe modulus miniaturization requirement of existing breaker, and manufacturing cost is also high, has to a certain degree limited breakerThe scope of application.

The patent No. is that the Chinese patent of CN98115470.0 has disclosed a kind of single-phase circuit breaker, and containing canThe switching mechanism being started by overload trip element; Can connect with other single-phase circuit breakers, when one of themWhen breaker overload, each utmost point of all breakers all disconnects; Can also add by executive component and withThe current range that the connected electric current dial of this executive component forms arranges device; At overload trip elementAnd the adjustment sheet of wedge shape is set between support, support acts on switching mechanism; The adjustment sheet of wedge shape is logicalCross elasticity flexibly spring be firmly connected with middle fairlead; Middle fairlead is arranged on the shell of breakerOn body, can move along the direction of action of overload trip element. This scheme is come more by the adjustment sheet of wedge shapeMend the required displacement of different operating electric current bimetallic element, and lozenges acts on overload trip elementOn useful effect power can reduce because of the existence on inclined-plane. This scheme drives wedge by a spring leafThe position of shape face, spring leaf is as a kind of flexible piece, and it cannot accurately be controlled wedge stroke, depositsIn larger error, each operation regulates while being rotated in identical graduation, and wedge is not necessarily sameFixed position, thus greatly reduce the tripping characteristic of product.

The patent No. be the Chinese patent of CN03137174.4 disclosed a kind of for circuit-breaker canAdjust thermal tripping assembly. Electricity when bimetal leaf in a kind of thermal tripping assembly activates a tripping mechanismElectric current/temporal characteristics value of circuit breaker, comprises and can revolve around a common pivotal line respectively by oneThe adjustable connector of the first and second pivot pendulum elements that turn regulates. The bimetal leaf causing due to overcurrentBending cause the rotation of the first pivot pendulum element, this first pivot pendulum element is parallel to common by oneThe joint element that pivotal line extends is put element with the second pivot that is rotated to activate tripping mechanism and is engaged.Locator make this joint element towards with deviate from common pivotal line and move to regulate the tripping operation machine that activatesThe bending amount of the required bimetal leaf of structure. The adjusting device complex structure of this scheme, parts are various,Greatly improved manufacture difficulty, and the cooperation that brings of all multiple components can reduce the adjusting of governor motionPrecision and reliability.

Summary of the invention

The present invention be intended to propose a kind of simple in structure, volume is little, the hot type that is applicable to miniature circuit breaker canAdjust trip gear.

According to one embodiment of the invention, a kind of hot type adjustable tripping device of miniature circuit breaker is proposed,Be arranged in the pedestal of miniature circuit breaker, comprise: pedestal, tripping mechanism, thermal deformation element and adjustingMechanism. Tripping mechanism has the trip link stretching out. Thermal deformation element closes on trip link setting, heatBetween deformation element and trip link, retain interval. Governor motion regulates trip link and thermal deformation elementBetween the distance at interval. Electric current in the loop that miniature circuit breaker accesses is sent out thermal deformation elementThermal deformation, moves towards trip link after thermal deformation deformed element, contacts and promote de-with trip linkLink bar, trigger tripping mechanism and thread off. Governor motion regulates between thermal deformation element and trip linkDistance is with the size of setting current in regulating loop.

In one embodiment, governor motion comprises push rod, and the first end of push rod contacts with trip link,The second end of push rod contacts with an inclined-plane, the position that the second end of regulating pushing rod contacts with inclined-plane, push rodThe position of the corresponding adjusting trip link of first end, to regulate between thermal deformation element and trip linkDistance.

In one embodiment, governor motion comprises: adjusting knob, STATEMENT OF FEDERALLY SPONSORED, push rod and spring.Adjusting knob can rotate. STATEMENT OF FEDERALLY SPONSORED and adjusting knob interlock, adjusting knob rotation, STATEMENT OF FEDERALLY SPONSORED is along adjustingMoving radially of knob, has described inclined-plane in STATEMENT OF FEDERALLY SPONSORED, inclined-plane, in direction radially, hasDifferent axial widths. Push rod arranges vertically, and the first end of push rod forms the first projection, and first is protrudingRise and contact with trip link, the second end of push rod forms the second projection, and the second projection contacts with inclined-plane.One end of spring is fixed on pedestal, and the other end of spring is fixed on push rod, and spring is by of push rodTwo projections are pressed on inclined-plane.

In one embodiment, adjusting knob comprises: outside cylinder, interior cylinder, linkage post and locating part.On the outer surface of outside cylinder, have arrow groove. Interior cylinder is positioned at the inner side of outside cylinder, the diameter of interior cylinderBe less than outside cylinder, interior cylinder is concentric with outside cylinder. Linkage post is positioned at the inner side of cylinder, and linkage post is leaned onEdge, linkage post and the interior cylinder decentraction of cylinder near. Locating part is positioned at the end of linkage post, limitThe diameter of position part is greater than linkage post.

In one embodiment, the outside of STATEMENT OF FEDERALLY SPONSORED is plane, and inner side is formed with described inclined-plane, interlockOn part, be formed with interlock groove, linkage post is arranged in described interlock groove, adjusting knob rotation, interlock corniceMoving described STATEMENT OF FEDERALLY SPONSORED radially moves, the axial relative displacement of locating part restriction adjusting knob and STATEMENT OF FEDERALLY SPONSORED.

In one embodiment, have circular hole on pedestal, adjusting knob is arranged in circular hole. Pedestal existsOffer the first groove near the position of circular hole, the first groove is for radially, and STATEMENT OF FEDERALLY SPONSORED is slided in the first groove.Pedestal offers the second groove in one end of the first groove, and the second groove is that axially push rod slides in the second groove.

In one embodiment, the diameter of circular hole and the diameter of interior cylinder form interference fit.

In one embodiment, it is U-shaped that trip link is, and the first arm of trip link and tripping mechanism connectConnect, the U-shaped summit of trip link contacts with the second projection of push rod, the second arm of trip link and heatBetween deformation element, retain interval.

In one embodiment, thermal deformation element is bimetal leaf, and electric current becomes bimetal leaf heatingShape, move towards the second arm of trip link one end of bimetal leaf, with the second knee-joint of trip linkTouch and promote the second arm of trip link, the first arm of trip link triggers tripping mechanism and threads off.

In one embodiment, this miniature circuit breaker is for motor.

The hot type adjustable tripping device of miniature circuit breaker of the present invention utilizes rigid member to regulate trip linkAnd the distance between thermal deformation element. Rigid member can guarantee to operate each time in thermal deformation element with de-The distance linking between bar is fixed, thus ensure tripping characteristic stablize and increase being subject to of thermal deformation elementThermal flexure stroke and active force. This hot type adjustable tripping device is simple in structure, cost of manufacture is low, volumeLittle. Adopt the miniature circuit breaker of hot type adjustable tripping device of the present invention to be applicable to motor, especiallyFractional electric motor in household electrical appliance.

Brief description of the drawings

The above and other feature of the present invention, character and advantage will be by below in conjunction with accompanying drawing and realitiesExecute routine description and become more obvious, identical Reference numeral represents identical spy all the time in the accompanying drawingsLevy, wherein:

Fig. 1 has disclosed according to governor motion in the hot type adjustable tripping device of one embodiment of the inventionStructure chart.

Fig. 2 A and 2B have disclosed according to regulating in the hot type adjustable tripping device of one embodiment of the inventionThe structure chart of knob.

Fig. 3 has disclosed according to the knot of STATEMENT OF FEDERALLY SPONSORED in the hot type adjustable tripping device of one embodiment of the inventionComposition.

Fig. 4 has disclosed according to the structure of push rod in the hot type adjustable tripping device of one embodiment of the inventionFigure.

Fig. 5 has disclosed for installing according to the base of the hot type adjustable tripping device of one embodiment of the inventionThe structure chart of the subregion of seat.

Fig. 6 has disclosed according to the operation principle of the hot type adjustable tripping device of one embodiment of the invention,Wherein setting current is large electric current.

Fig. 7 has disclosed according to the operation principle of the hot type adjustable tripping device of one embodiment of the invention,Wherein setting current is little electric current.

Fig. 8 has disclosed the miniature circuit breaker that adopts the hot type adjustable tripping device of one embodiment of the inventionAppearance assumption diagram.

Detailed description of the invention

The Basic Design of hot type adjustable tripping device of the present invention is to adopt a rigid member to regulate dropoutInterval between connecting rod and thermal deformation element, to regulate the size of setting current. The characteristic of rigid member makesAfter must having regulated each time, the distance between trip link and thermal deformation element is fixed, unlikeElastic component is unstable like that, therefore can improve the stability of tripping characteristic.

According to one embodiment of the invention, a kind of adjustable dropout of hot type that is applicable to miniature circuit breaker is proposedDevice, this hot type is adjustable, and tripping mechanism is arranged in the pedestal of miniature circuit breaker, comprising: tripping mechanism,Thermal deformation element and governor motion. Tripping mechanism has the trip link stretching out. Thermal deformation element closes onTrip link arranges, and between thermal deformation element and trip link, retains interval. Governor motion regulates threads offThe distance at the interval between connecting rod and thermal deformation element. Wherein governor motion forms a rigid member. Small-sizedElectric current in the loop that breaker accesses makes the distortion of thermal deformation element heating, thermal deformation deformed elementAfter move towards trip link, contact and promote trip link with trip link, trigger tripping mechanism de-Button. Distance between governor motion adjusting thermal deformation element and trip link is with the electricity of adjusting in regulating loopThe size of stream.

In one embodiment, governor motion utilizes inclined-plane to realize the adjusting of distance. In governor motionComprise push rod, the first end of push rod contacts with trip link, and the second end of push rod contacts with an inclined-plane,The position that the second end of regulating pushing rod contacts with inclined-plane, because inclined-plane tilts, makes the position of push rodPut and change, the position of the corresponding adjusting trip link of first end of push rod, to regulate thermal deformation elementAnd the distance between trip link.

Shown in figure 1, Fig. 1 has disclosed according to the adjustable dropout dress of the hot type of one embodiment of the inventionPut the structure chart of middle governor motion. This governor motion comprises adjusting knob 102, STATEMENT OF FEDERALLY SPONSORED 103, pushes awayBar 104 and spring 105.

With reference to figure 2A and 2B, disclose the hot type adjustable tripping device according to one embodiment of the inventionThe structure chart of middle adjusting knob. Adjusting knob 102 can rotate. Adjusting knob 102 comprises: outside cylinder122, interior cylinder 123, linkage post 124 and locating part 125. On the outer surface of outside cylinder 122, openThere is arrow groove 121. Interior cylinder 123 is positioned at the inner side of outside cylinder 122, and the diameter of interior cylinder 123 is littleIn outside cylinder 122, interior cylinder 123 is concentric with outside cylinder 122. Linkage post 124 is positioned at cylinder123 inner side, linkage post 124 is near the edge of interior cylinder 123, linkage post 124 and interior cylinder123 decentraction. Linkage post 124 forms eccentric structure with interior cylinder 123. Locating part 125 is positioned at connectionThe end of moving post 124, the diameter of locating part 125 is greater than linkage post 124. Adjusting knob 102 is installedIn a circular hole 112 of pedestal 101, circular hole 112 is positioned on the front side wall of pedestal 101. Circular holeThe diameter of 102 diameter and interior cylinder 123 forms the relation of interference fit, after installation, and interior cylinder123 are stuck in circular hole 102, and outside cylinder 122 is positioned at outside pedestal 101. Due to circular hole and interior cylinderBe the relation of interference fit, do not having in outer power-actuated situation, adjusting knob 102 can oneself not turnMoving, therefore can guarantee the stable of set parameter and Interruption. Arrow groove in outside cylinder 122121 have two effects, and first effect is rotation after can inserting for instrument, and instrument inserts arrow grooveRotation external force is provided after 121, rotates adjusting knob 102. Another effect of arrow groove 121 isArrow can point to appointment numerical value, the setting current that this numeric representation is specified. Numerical value can be engraved in circular holeOn housing around. The effect of linkage post 124 and locating part 125 be mainly for STATEMENT OF FEDERALLY SPONSORED 103Coordinate interlock. Can further describe in conjunction with STATEMENT OF FEDERALLY SPONSORED below.

Fig. 3 has disclosed according to the knot of STATEMENT OF FEDERALLY SPONSORED in the hot type adjustable tripping device of one embodiment of the inventionComposition. STATEMENT OF FEDERALLY SPONSORED 103 links with adjusting knob 102, and adjusting knob 102 rotates, STATEMENT OF FEDERALLY SPONSORED 103Along moving radially of adjusting knob, in STATEMENT OF FEDERALLY SPONSORED 103, there is inclined-plane, inclined-plane in direction radially,There is different axial widths. For convenience, this sentences adjusting knob as a reference, limits twoIndividual direction, one of them is the radial direction of adjusting knob, with the circle of each cylinder of adjusting knobThe direction that cylinder is parallel, another is the axial direction of adjusting knob, with the cylinder of adjusting knobThe direction that axis is parallel. Alleged " radially " refers to adjusting knob radially herein, " axially "Refer to the axial of adjusting knob. Shown in figure 3, the outside of STATEMENT OF FEDERALLY SPONSORED 103 (shown in Fig. 3The back side) be plane, inner side (front shown in Fig. 3) is formed with inclined-plane 131, this inclined-plane 131In the direction along radially, there is different axial widths. It should be noted that, inclined-plane 131 isInclined working, and inclined-plane 133 is only used to coordinate the shape on inclined-plane 131 set, does not have realityBorder meaning. Different be in example, inclined-plane 133 can have different sizes, or does not arrangeInclined-plane 133. In STATEMENT OF FEDERALLY SPONSORED 103, be formed with interlock groove 132. The linkage post 124 of adjusting knob 102Be arranged in interlock groove 132, because linkage post 124 is eccentric with respect to adjusting knob 102 center,Therefore in the time that adjusting knob rotates, linkage post 124 can produce displacement radially, and linkage post 124 drivesSTATEMENT OF FEDERALLY SPONSORED 103 also radially moves. The effect of linkage post 124 is to link with STATEMENT OF FEDERALLY SPONSORED 103, thereforeIt not necessarily will be configured to illustrated cylindrical, considers in place moving past in journey, and linkage post 124 existsIn the interlock groove 132 of STATEMENT OF FEDERALLY SPONSORED 103, also can produce relative rotation, therefore cylindrical is preferably a kind ofSelect, but be not necessary. The diameter of linkage post 124 matches with the diameter of interlock groove 132. LimitThe effect of position part 125 is axial relative displacements of restriction adjusting knob 102 and STATEMENT OF FEDERALLY SPONSORED 103. ThereforeThe diameter of locating part 125 can be greater than the diameter of linkage post 124, is also greater than the diameter of the groove 132 that links.It should be noted that, " diameter " has implication widely herein, to size radially, even if do not adviseShape also has measurable radial dimension. Although illustrated locating part 125 is also cylindrical,But this is not necessary.

Fig. 4 has disclosed according to the structure of push rod in the hot type adjustable tripping device of one embodiment of the inventionFigure. With reference to figure 1 and Fig. 4, push rod 104 arranges vertically. The second end of push rod 104 forms secondProjection 142, the second projections 142 contact with inclined-plane 131, and it is first protruding that the first end of push rod 104 formsPlaying 141, the first projections 141 contacts with trip link. As shown in the figure, the second projection 142 and firstProjection 141 be not with the body of push rod 141 in a straight line, but there is certain radial deflection,So design is relevant with the installation site of push rod 104 in pedestal 101, can describe in detail below.The first end of push rod 104 is also formed with an end face 143, and end face 143 is used for mounting spring 105.

One end of spring 105 is fixed on pedestal 101, and the other end of spring 105 is fixed on push rodOn 104, in illustrated embodiment, be fixed on end face 143. Spring 105 is by push rod 104The second projection 142 is pressed on inclined-plane 131. Due to the existence of spring 105, second of push rod 104Projection 142 engages with inclined-plane 131 all the time.

Shown in figure 5, Fig. 5 has disclosed can according to the hot type of one embodiment of the invention for installingAdjust the structure chart of the subregion of the pedestal of trip gear. As shown in Figure 5, on pedestal 101, have circleHole 112, circular hole is positioned on the front side wall of pedestal 101. The diameter of circular hole 112 and interior cylinder 123Diameter forms interference fit. Adjusting knob 102 is arranged in circular hole 112. Pedestal 101 is at close circleThe position in hole 112 offers the first groove 114, the first grooves for radially, and STATEMENT OF FEDERALLY SPONSORED 103 is arranged on firstIn groove 114 and in the first groove 114, slide. Pedestal 101 offers the second groove in one end of the first groove111, the second grooves 111 are axially, and push rod 104 is arranged in the second groove 111 and in the second groove slidingMoving. In the embodiment shown in fig. 5, be also provided with a spring groove 113 at the rear of the second groove 111,Spring groove 113 is for placing spring 105, and the two ends of spring 105 are separately fixed at the end face 143 of push rodOn the wall of spring groove 113.

Fig. 6 and Fig. 7 have disclosed according to the work of the hot type adjustable tripping device of one embodiment of the inventionPrinciple, the setting current that Fig. 6 is corresponding different with Fig. 7, the setting current that Fig. 6 is corresponding is large electric current,The setting current that Fig. 7 is corresponding is little electric current.

Shown in figure 6 and Fig. 7, adjusting knob 102, STATEMENT OF FEDERALLY SPONSORED 103 in governor motion, push awayBar 104 and spring 105 are arranged on respectively circular hole, the first groove, the second groove and the spring on pedestal 101In groove. STATEMENT OF FEDERALLY SPONSORED 103 can move radially, and push rod 104 can move axially. Tripping mechanism 106 is positioned atThe side of governor motion, the trip link 161 of tripping mechanism 106 extends to the axial tail of governor motionEnd, trip link 161 is U-shaped, similar U-shaped in other words. The first arm of trip link 161 withTripping mechanism 106 connects, and the first projection 141 of the U-shaped summit of trip link and push rod 104 connectsTouch, the second arm sling of trip link 161 empty and and thermal deformation element 107 between retain interval. Thermal changeShaped element part 107 is positioned at pedestal 101, and in one embodiment, thermal deformation element 107 is bimetallicsSheet. Electric current in the loop that this small-sized short-circuiting device accesses makes bimetal leaf heating distortion, distortionMove towards the second arm of trip link 161 one end of bimetal leaf 107, with trip link 161The second arm contact, because the U-shaped summit of trip link 161 is by the first projection 141 of push rod 104Withstand, therefore, when bimetal leaf 107 continues distortion, when its one end continues to move, will promote the company of dropoutThe second arm of bar 161, now trip link 161 can rotate taking U-shaped summit as fulcrum, trip linkThe first arm of 161 can move and trigger tripping mechanism 106 and thread off, to cut off circuit. Cut off after circuit,Bimetal leaf is progressively cooling and recover original-shape.

Continue with reference to shown in figure 6 and Fig. 7, rotation adjusting knob 102, due to linkage post 124 partiallyCore structure, linkage post 124 can drive STATEMENT OF FEDERALLY SPONSORED 103 to produce radial displacement. Because push rod 104 can onlyMove axially, can not move radially, and the second projection 142 of push rod 104 is pressed in by spring 105On inclined-plane 131, in the time that STATEMENT OF FEDERALLY SPONSORED 103 moves radially, the second projection 142 is different from inclined-plane 131Position contact, the diverse location on inclined-plane 131 has different axial widths, is equivalent to promote push rod 104Move vertically. Because push rod 104 is rigidity, so the first projection 141 of push rod 104 first endsAlso move axially, the U-shaped summit that the first projection 141 can promote trip link 161 moves axially,Correspondingly, the distance between the second arm of trip link 161 and one end of bimetal leaf 107 changes.As shown in the figure, because push rod 104 is sidewall settings near pedestal 101, therefore the second projection142 have skew radially with the body of push rod 104, with make the second projection 142 can with inclined-plane 131Zone Full contact, obtain larger adjustable range. In illustrated embodiment, the first projection 141Also there is certain radial deflection with the body of push rod 104. In the embodiment shown in fig. 6, push rod 104The second projection 142 contact with the thin location on inclined-plane 131, the second arm of trip link 161 is with pair goldenThe distance that belongs to sheet 107 one end is larger, and corresponding larger setting current, needs larger electric current, two goldWhen larger flexural deformation occurs genus sheet, trip link just can touch tripping mechanism and thread off. In Fig. 7 instituteIn the embodiment showing, the second projection 142 of push rod 104 contacts with the thickness on inclined-plane 131, threads offThe distance of the second arm of connecting rod 161 and bimetal leaf 107 one end is less, corresponding less setting current,Only need less electric current, when less flexural deformation occurs bimetal leaf, trip link will touchMoving tripping mechanism is threaded off.

Fig. 8 has disclosed the miniature circuit breaker that adopts the hot type adjustable tripping device of one embodiment of the inventionAppearance assumption diagram. After assembling, on the shell of pedestal 101, can see adjusting knob 102,At the periphery of adjusting knob 102 numerical value of can annotating, numerical value represents the adjustable range of setting current.

The hot type adjustable tripping device of miniature circuit breaker of the present invention, is applicable to motor, especially familyThe fractional electric motor of electrical appliance.

Above-described embodiment is available to be familiar with person in the art and to realize or use of the present invention, ripeKnowing those skilled in the art can without departing from the present invention in the case of the inventive idea, do above-described embodimentGo out various modifications or variation, thereby protection scope of the present invention do not limit by above-described embodiment, and answerThis is the maximum magnitude that meets the inventive features that claims mention.

Claims

1. a hot type adjustable tripping device for miniature circuit breaker, is characterized in that, is arranged on small-sized disconnectedIn the pedestal of road device, comprising:

Tripping mechanism, tripping mechanism has the trip link stretching out;

Thermal deformation element, thermal deformation element closes on trip link setting, thermal deformation element and trip linkBetween retain interval;

Governor motion, governor motion regulates the distance at the interval between trip link and thermal deformation element,Wherein governor motion forms a rigid member, and rigid member contacts with inclined-plane and regulates trip link and thermal deformationThe distance at the interval between element;

Electric current in the loop that described miniature circuit breaker accesses makes the distortion of thermal deformation element heating, heatAfter deformation element distortion, move towards trip link, contact and promote trip link with trip link, touchSending out tripping mechanism threads off;

Distance between governor motion adjusting thermal deformation element and trip link is with the electricity of adjusting in regulating loopThe size of stream.

2. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 1, is characterized in that,

Described governor motion comprises push rod, and the first end of push rod contacts with trip link, second of push rodEnd contacts with an inclined-plane, and the second end of regulating pushing rod and the position that described inclined-plane contacts make push rodFirst end correspondingly regulates the position of trip link, thereby regulates between thermal deformation element and trip linkDistance.

3. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 2, is characterized in that,Described governor motion comprises:

Adjusting knob, adjusting knob can rotate;

STATEMENT OF FEDERALLY SPONSORED, with adjusting knob interlock, adjusting knob rotation, STATEMENT OF FEDERALLY SPONSORED along adjusting knob radiallyMobile, in STATEMENT OF FEDERALLY SPONSORED, there is described inclined-plane, described inclined-plane, in direction radially, has differentAxial width;

Push rod, push rod arranges vertically, and the first end of push rod forms the first projection, and the first projection is with de-Link bar contact, the second end of push rod forms the second projection, and the second projection contacts with described inclined-plane;

Spring, one end of spring is fixed on pedestal, and the other end of spring is fixed on push rod, springThe second projection of push rod is pressed on described inclined-plane.

4. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 3, is characterized in that,Described adjusting knob comprises:

Outside cylinder, has arrow groove on the outer surface of outside cylinder;

Interior cylinder, interior cylinder is positioned at the inner side of outside cylinder, and the diameter of interior cylinder is less than outside cylinder, inner circlePost is concentric with outside cylinder;

Linkage post, linkage post is positioned at the inner side of cylinder, and linkage post, near the edge of interior cylinder, linksPost and interior cylinder decentraction;

Locating part, is positioned at the end of linkage post, and the diameter of locating part is greater than the diameter of linkage post.

5. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 4, is characterized in that,

The outside of described STATEMENT OF FEDERALLY SPONSORED is plane, and inner side is formed with described inclined-plane, is formed with connection in STATEMENT OF FEDERALLY SPONSOREDMoving groove, described linkage post is arranged in described interlock groove, adjusting knob rotation, linkage post drives describedMoving part radially moves, the axial relative displacement of described locating part restriction adjusting knob and STATEMENT OF FEDERALLY SPONSORED.

6. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 5, is characterized in that,

On described pedestal, have circular hole, described adjusting knob is arranged in circular hole;

Described pedestal is offering the first groove near the position of circular hole, and the first groove is for radially, described interlockPart slides in the first groove;

Described pedestal offers the second groove in one end of the first groove, and the second groove is that axially described push rod existsIn the second groove, slide.

7. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 6, is characterized in that,The diameter of described circular hole and the diameter of described interior cylinder form interference fit.

8. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 6, is characterized in that,

Described trip link is U-shaped, and the first arm of trip link is connected with tripping mechanism, trip linkThe second projection of U-shaped summit and push rod contact, between second arm and thermal deformation element of trip linkRetain interval.

9. the hot type adjustable tripping device of miniature circuit breaker as claimed in claim 8, is characterized in that,

Described thermal deformation element is bimetal leaf, and electric current makes bimetal leaf heating distortion, bimetal leafOne end move towards the second arm of trip link, with the second arm contact of trip link and promote to thread offThe second arm of connecting rod, the first arm of trip link triggers tripping mechanism and threads off.

10. the hot type adjustable tripping device of miniature circuit breaker as claimed in any one of claims 1-9 wherein,It is characterized in that, described miniature circuit breaker is for motor.