CN203859083U - Operation mechanism of small circuit breaker - Google Patents
Operation mechanism of small circuit breaker Download PDFInfo
- Publication number
- CN203859083U CN203859083U CN201420133126.1U CN201420133126U CN203859083U CN 203859083 U CN203859083 U CN 203859083U CN 201420133126 U CN201420133126 U CN 201420133126U CN 203859083 U CN203859083 U CN 203859083U
- Authority
- CN
- China
- Prior art keywords
- tripping
- snap close
- bearing
- connecting rod
- component
- 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.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 83
- 230000000670 limiting effect Effects 0.000 claims abstract description 4
- 230000000452 restraining effect Effects 0.000 claims description 22
- 230000009471 action Effects 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 11
- 230000000717 retained effect Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 14
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Breakers (AREA)
Abstract
The utility model provides an operation mechanism of a small circuit breaker. A handle which is pivotally installed on a shell is hinged to the second end of a connection rod to provide driving force to the connection rod, and a lever and a lock catch which are hinged to a jump buckle are connected with the shell through a composite hinge. The first end of the connection rod is provided with a bearing which can move back and forth in a component force groove on the lever. A limiting surface can be arranged on the shell. The jump buckle is provided with a stress groove, and the bearing is restricted by the component force groove or the limiting surface and the stress groove together. The driving force of the connection rod is restricted by the lever and the jump buckle or the shell and the jump buckle together and is divided into a first component force and a second component force. The lock catch is provided with a lock catch tooth which is separably overlapped with the jump buckle tooth of the jump buckle. Through the overlapping or separation of the lock catch tooth and the jump buckle tooth, the overall locking or unlocking of the lever, the jump buckle and the bearing on the first end of the connection rod is realized through the lock catch. The lock catch provides locking force applied to the jump buckle through an overlapping point formed by the overlapping of the lock catch tooth and the jump buckle tooth. The second component force of the driving force of the connection rod and the locking force are balanced through a balancing mechanism.
Description
Technical field
The utility model relates to the operating mechanism for miniature circuit breaker, can realize the closure of miniature circuit breaker, disconnects and the operation of threading off.
Background technology
Existing miniature circuit breaker has obtained using widely as the low-voltage electrical apparatus of route protection; follow the development of miniature circuit breaker; performance requirement to it is also more and more higher, and the important performance that wherein high breaking capacity and large rated current relate to product competitiveness in the market one of requires.But, due to more high breaking capacity and larger rated current specification, cause the actuating force of miniature circuit breaker inside to increase, but then, in order to ensure stability and the reliability of circuit breaker action, require the tripping force of circuit breaker action less.In the operating mechanism of existing miniature circuit breaker, generally adopt the planar linkage structure being formed by handle, U-shaped bar, lever, tripping, snap close, tripping is connected with lever hinge respectively with snap close, the two ends of U-shaped bar respectively with handle and tripping chain connection, the elastic force of arm spring acts on bar bar.Tripping force refers to and touches snap close release and cause the operating mechanism required power of threading off, and guarantees that operating mechanism is reliably threaded off need meet tripping force and be greater than snap action in the snap close power of tripping.In the case of the structure of operating mechanism is constant, the increase of actuating force must cause the increase of snap close power, and the increase inevitable requirement tripping force of snap close power increases, otherwise can not ensure normal dropout.Visible actuating force increases and reduces with tripping force is conflict, so will obtain the large and little effect of tripping force of actuating force simultaneously, this operating mechanism to circuit breaker is had higher requirement.
Existing generally employing by handle, U-shaped bar, lever, tripping, the advantage of the planar linkage structure that snap close forms is simple in structure, technology maturation, as name is called No. 200820041555 utility model patents of " operating mechanism of the miniature circuit breaker of trip free ", the operation principle of this operating mechanism is: in the time of tripping and latch engagement locking, tripping, snap close and lever three mutually restrict and can not free movement also lock thus as a whole, the operating physical force acting on handle is transmitted to described entirety by two hinges at U-shaped bar two ends, the actuating force that acts on tripping by U-shaped bar can pass to lever, and the elastic force that this actuating force can overcome arm spring orders about lever and has rotated closing operation.Under "on" position, the Spring balanced of this actuating force and arm spring; In the time that tripping separates release with snap close, tripping and snap close can freely rotate with respect to lever, make thus the tripping can not be to lever transmission actuating force, owing to having lost the actuating force of elastic force of balanced lever spring on lever, so can turn round and carry out to thread off to trip under the elastic force effect of arm spring, lever moves.In existing operating mechanism, one end of U-shaped bar is enclosed within tripping, in the dropout process of mechanism, tripping is together rotated with U-shaped bar all the time, and do not encounter snap close, and therefore limit the size of tripping, cause the ratio of tripping conversion power less than normal, once increase reset force and the contact pressure of circuit breaker, tripping force will exceed the scope of application.Obviously, existing operating mechanism can not obtain actuating force greatly and the little effect of tripping force simultaneously.
Summary of the invention
In order to overcome the defect of prior art, the purpose of this utility model is to provide a kind of operating mechanism of miniature circuit breaker, by integrally-built reasonable ingenious improvement, can obtain the large and little effect of tripping force of actuating force simultaneously, also properly settle the problem that affects of the dropout performance of frictional resistance on operating mechanism simultaneously.
For achieving the above object, the operating mechanism of miniature circuit breaker of the present utility model has adopted following technical scheme.
According to the first execution mode, comprise handle 1 on the housing 10 that is pivoted on this circuit breaker, by compound hinges FJ be jointly connected in the lever 3 of housing 10 and snap close 5, by hinge axis Z0 and the hinged tripping 4 of lever 3, and connecting rod 2, arm spring 6, tripping back-moving spring 7, snap close back-moving spring and handle back-moving spring.Wherein, described lever 3 is provided with component groove 31, and the first end 21 of described connecting rod 2 is provided with the bearing 8 that can move around in this component groove 31, and described tripping 4 is provided with the stressed groove 42 that jointly can form to bearing 8 constraint with described component groove 31; Described handle 1 is by providing actuating force F with the chain connection of the second end 22 of connecting rod 2 to connecting rod 2, and this actuating force F is divided into by the common constraint of lever 3 and tripping 4 to act on the first component F1 on lever 3 and act on the second component F2 in tripping 4.Described snap close 5 be provided with tripping 4 on the snap close tooth 51 of tripping tooth 41 detachable overlap joints, overlap joint by snap close tooth 51 and tripping tooth 41 or separate, snap close 5 is realized integral locking or the release of the bearing 8 of the first end 21 to lever 3, tripping 4 and connecting rod 2, and, snap close 5 provides the snap close power acting in tripping 4 Fs by overlapping by snap close tooth 51 and tripping tooth 41 the overlapped points D0 forming, and described act on the second component F2 in tripping 4 and can realize and the balance of described snap close power Fs by balanced controls.
A kind of structure preferably adopting is in addition, described integral locking refers to that snap close tooth 51 and tripping tooth 41 overlap joints make component groove 31 and stressed groove 4 form common constraint to the bearing 8 on the first end 21 of connecting rod 2, and the restraining force of component groove 31 to the bearing 8 on connecting rod 2 and the first component F1 balance of actuating force F, the restraining force of stressed groove 42 to the bearing 8 on connecting rod 2 and the second component F2 balance of actuating force F, the second component F2 and snap close 5 act on the snap close power Fs balance of tripping 4; Described release refers to that snap close tooth 51 separates with tripping tooth 41 component groove 31 and stressed groove 42 is disengaged the constraint of the bearing 8 on the first end 21 of connecting rod 2, and snap close 5 unlocks to the bearing 8 on lever 3, tripping 4 and connecting rod 2, bearing 8 is retained in component groove 31, and can be in the interior movement of component groove 31.
The another kind of structure preferably adopting is, described bearing 8 is rolling bearing, comprise interior ring 81, outer shroud 82 and multiple rolling element 80, interior ring 81 is fixedly connected with the first end 21 of connecting rod 2, stressed groove 42 under integral locking state in tripping 4 contacts with outer shroud 82 simultaneously and jointly outer shroud 82 is formed to constraint with the component groove 31 on lever 3, and under released state, outer shroud 82 can be in stressed groove 42 and the interior rolling of component groove 31.
According to the second execution mode, comprise handle 1 on the housing 10 that is pivoted on this circuit breaker, by compound hinges FJ be jointly connected in the lever 3 of housing 10 and snap close 5, by hinge axis Z0 and the hinged tripping 4 of lever 3, and connecting rod 2, arm spring 6, tripping back-moving spring 7, snap close back-moving spring and handle back-moving spring.Wherein, described housing 10 is provided with restriction face 101, the first end 21 of connecting rod 2 is provided with bearing 8, tripping 4 is provided with the stressed groove 42 that jointly can form to bearing 8 constraint with restriction face 101, lever 3 and/or housing 10 are provided with the gathering sill 301 that limits bearing 8 motion tracks, and bearing 8 can move around in this gathering sill 301.Described handle 1 is by providing actuating force F with the chain connection of the second end 22 of connecting rod 2 to connecting rod 2, and this actuating force F is divided into by the common constraint of housing 10 and tripping 4 to act on the first component F1 on housing 10 and act on the second component F2 in tripping 4.Described snap close 5 be provided with tripping 4 on the snap close tooth 51 of tripping tooth 41 detachable overlap joints, overlap joint by snap close tooth 51 and tripping tooth 41 or separate, snap close 5 is realized integral locking or the release of the bearing 8 of the first end 21 to lever 3, tripping 4 and connecting rod 2, and, snap close 5 provides the snap close power acting in tripping 4 Fs by overlapping by snap close tooth 51 and tripping tooth 41 the overlapped points D0 forming, and described act on the second component F2 in tripping 4 and can realize and the balance of described snap close power Fs by balanced controls.
A kind of structure preferably adopting is in addition, described integral locking refers to that snap close tooth 51 and tripping tooth 41 overlap joints make restriction face 101 and stressed groove 42 form common constraint to the bearing 8 on the first end 21 of connecting rod 2, and the restraining force of restriction face 101 to the bearing 8 on connecting rod 2 and the first component F1 balance of actuating force F, the restraining force of stressed groove 42 to the bearing 8 on connecting rod 2 and the second component F2 balance of actuating force F, the second component F2 and snap close 5 act on the snap close power Fs balance of tripping 4; Described release refers to that 41 points, snap close tooth 51 and tripping tooth separates the restriction face of making 101 and stressed groove 42 is disengaged the constraint of the bearing 8 on the first end 21 of connecting rod 2, snap close 5 unlocks to the bearing 8 on lever 3, tripping 4 and connecting rod 2, and bearing 8 is retained in guiding groove 301, and can be in the interior movement of guiding groove 301.
The another kind of structure also preferably adopting is, described bearing 8 is rolling bearing, comprise interior ring 81, outer shroud 82 and multiple rolling element 80, interior ring 81 is fixedly connected with the first end 21 of connecting rod 2, stressed groove 42 under integral locking state in tripping 4 contact with outer shroud 82 simultaneously and jointly outer shroud 82 is formed to constraint with the restriction face 101 on housing 10, and under released state, outer shroud 82 can be on restriction face 101 and stressed groove 42, the interior rolling of guiding groove 301.
In addition, the first execution mode and the second execution mode all adoptable preferred structure are, described balanced controls are equalising torque mechanism, comprise fulcrum taking the hinge axis Z0 in tripping 4 as center of rotation, the second component F2 with respect to the first arm of force L1 of described fulcrum Z0 and snap close power Fs the second arm of force L2 with respect to described fulcrum Z0, and the second arm of force L2 is greater than the first arm of force L1.And then described snap close power Fs is that the second component F2 of described actuating force F is with respect to 5 to 10 times of the first arm of force L1 in tripping 4 with respect to the second arm of force L2 in tripping 4.
In addition, the first execution mode and the second execution mode all adoptable preferred structure are, described compound hinges FJ comprises 1 pin-and-hole 32 being formed on lever 3, is formed on 50 and 1 bearing pin inserting in pin-and-hole 32 and coaxial aperture 50 of 2 coaxial apertures on snap close 5, and described bearing pin and pin-and-hole 32, coaxial aperture 50 are rotatably assorted.
In addition, the first execution mode and the second execution mode all adoptable preferred structure are, the two ends of described tripping back-moving spring 7 respectively with lever 3, tripping 4 connects, the two ends of described snap close back-moving spring respectively with lever 3, snap close 5 connects, described handle action of reset spring is in the direction of the moment of elasticity Mb of handle 1, the direction of moment of elasticity Mg that direction and the arm spring 6 that tripping back-moving spring 7 acts on the moment of elasticity Mt of tripping 4 acts on lever 3 is identical, snap close action of reset spring acts on the opposite direction of the moment of elasticity Mg of lever 3 in the direction of the moment of elasticity Ms of snap close 5 and arm spring 6.
Adopt above-mentioned any technical scheme, the utility model is by component principle, the power that the actuating force of operating mechanism is acted in tripping by U-shaped connecting rod is only the component of actuating force, the arm of force of the snap close power that makes on the other hand snap close in tripping strengthens, and the arm of force of the component of the actuating force of connecting rod in tripping reduces, make snap action be far smaller than the component of described actuating force in the snap close power of tripping by lever principle.In addition, because the relative displacement between U-shaped connecting rod and tripping unavoidably exists frictional resistance, sensitivity and the reliability of this frictional resistance impact dropout action, so the utility model significantly reduces the frictional force of relative displacement between connecting rod and tripping by bearing arrangement, in adopting component principle and equalising torque mode, also properly settle the problem that affects of the dropout performance of frictional resistance on operating mechanism, thereby realize in increasing the actuating force of operating mechanism, make tripping mechanism still remain on desirable scope for the tripping force of snap close, even also can significantly reduce tripping force.
Brief description of the drawings
Fig. 1 is the overall structure floor map of first embodiment of the operating mechanism of miniature circuit breaker of the present utility model.
Fig. 2 is the assembly relation schematic perspective view of the operating mechanism of the embodiment shown in Fig. 1.
Fig. 3 is that overall structure and the power of the operating mechanism of the embodiment shown in Fig. 1 is distribution floor map.
Fig. 4,5 is respectively the location status schematic diagram of the operating mechanism each movement parts in dropout process of the embodiment shown in Fig. 1.
Fig. 6 is that overall structure and the power of second embodiment of the operating mechanism of miniature circuit breaker of the present utility model is distribution floor map.
Fig. 7 is the B partial enlarged drawing in Fig. 2, shows the contour structures applicable to the bearing 8 of two kinds of execution modes.
Fig. 8 is Fig. 7 cutaway view, shows the internal structure of bearing 8 and the fixed connection structure with the first end 21 of connecting rod 2.
Embodiment
The embodiment providing below in conjunction with accompanying drawing 1 to 8, further illustrates the embodiment of the operating mechanism of miniature circuit breaker of the present utility model.The operating mechanism of miniature circuit breaker of the present utility model is not limited to the description of following examples.
Two different embodiment of the operating mechanism of miniature circuit breaker of the present utility model in Fig. 1-8, are provided, wherein, Fig. 1 to Fig. 5 has provided first embodiment, and Fig. 6 has provided second embodiment, and the difference of these two embodiment is the component frame mode difference that they adopt.The component frame mode of the first execution mode and the structure of equalising torque mode are shown in Fig. 3: by the bearing 8 on the first end 21 of the stressed groove 42 common constrained linkage 2 in component groove 31 on lever 3 and tripping 4, the actuating force F that handle 1 acts on connecting rod 2 is subject to common constraint be divided into the first component F1 acting on lever 3 and act on the second component F2 in tripping 4.The component frame mode of the second execution mode and the structure of equalising torque mode are shown in Fig. 6: by the bearing 8 on the first end 21 of the stressed groove 42 common constrained linkage 2 in the restriction face 301 forming on housing 10 and tripping 4, the actuating force F that handle 1 acts on connecting rod 2 is subject to common constraint be divided into the first component F1 acting on housing 10 and act on the second component F2 in tripping 4.Referring to Fig. 3 and Fig. 6, the operating mechanism of miniature circuit breaker of the present utility model, by being pivoted on handle on housing by providing actuating force with the hinge-coupled of the second end of connecting rod to connecting rod, connect with housing by compound hinges with lever and the snap close of tripping hinge-coupled.On the first end of connecting rod, there is bearing, in the component groove of this bearing on lever, can move around, the face processed of also can limiting on housing, tripping is provided with component groove or with restriction face can form the stressed groove retraining to bearing jointly.The actuating force of connecting rod is subject to the common constraint of lever and tripping or housing and tripping to be divided into the first and second component, snap close be provided with tripping on the snap close tooth of the detachable overlap joint of tripping tooth, overlap joint by snap close tooth and tripping tooth or separate, snap close is realized integral locking or the release to the bearing on lever, tripping and connecting rod first end, and, snap close provides the snap close acting in tripping power by overlapping by snap close tooth and tripping tooth the overlapped points forming, and the second component of the actuating force of connecting rod is by balanced controls and snap close dynamic balance.Operating mechanism of the present utility model is owing to the working beam of connecting rod being used to the mode of bearing, increase an isolated degree of freedom that can rotate around self, like this in the time relatively moving with tripping generation, can be undertaken by roll mode, because coefficient of rolling friction is significantly smaller than the coefficient of sliding friction, like this, even if the higher limit of available coefficient of friction is very little, still can ensure the regular event of operating mechanism.Connecting rod is subject to the effect of lever and tripping or housing and two parts of tripping, by changing the direction of two stress surfaces, the size of adjusting mechanism tripping force.And for tripping, can be by the size of the arm of force that reduces friction, or increase the arm of force of thrust, all can reach the effect that the available coefficient of friction upper limit is increased.
Referring to Fig. 1 to Fig. 8, the operating mechanism of miniature circuit breaker of the present utility model comprises housing 10, be pivoted on handle 1 on housing 10, by compound hinges FJ be jointly connected in the lever 3 of housing 10 and snap close 5, by hinge axis Z0 and the hinged tripping 4 of lever 3, and connecting rod 2, arm spring 6, tripping back-moving spring 7, snap close back-moving spring (not shown) and handle back-moving spring (not shown).Handle 1 can adopt the known structure of example revolute pair Z1 to be as shown in Figure 1 pivoted on the housing of miniature circuit breaker, lever 3 and snap close 5 connect with the housing 10 of circuit breaker by the compound hinges FJ shown in Fig. 1, compound hinges FJ can have various structures scheme, a kind of preferred compound hinges FJ scheme as shown in Figure 2, comprise 1 pin-and-hole 32 being formed on lever 3, be formed on 50 and 1 the bearing pin (not shown) of inserting in pin-and-hole 32 and coaxial aperture 50 of 2 coaxial apertures on snap close 5, the two ends of bearing pin are connected with housing respectively, bearing pin and pin-and-hole 32, coaxial aperture 50 is rotatably assorted.Tripping 4 and lever 3 hinge-coupled, this hinge-coupled can be by the example known various structures scheme realization of (but being not limited to) as shown in Figure 2, hinge-coupled structure comprises the first pan 40 of being separately positioned in tripping 4, is arranged on the second pan 30 and hinge axis Z0 on lever 3, hinge axis Z0 inserts the first pan 40 and the conventional installation of the interior formation of the second pan 30, and tripping 4 can be rotated around this center of rotation of hinge axis Z0.Referring to Fig. 2, handle 1 chain connection in the second end 22 and Fig. 1 of connecting rod 2, this chain connection can adopt the second end 22 of connecting rod 2 is directly inserted to the conventional axis hole structure that the connecting hole (not shown) on handle 1 realizes.Referring to Fig. 1 to Fig. 3, the operating mechanism of the first execution mode of the present utility model, lever 3 described in it is provided with component groove 31, the first end 21 of connecting rod 2 is provided with bearing 8, in tripping 4, be provided with the stressed groove 42 that jointly can form to bearing 8 constraint with component groove 31, bearing 8 can move around in this component groove 31 simultaneously.The second end 22 and handle 1 chain connection of described connecting rod 2, the actuating force F that handle 1 acts on connecting rod 2 by this chain connection is divided into by the common constraint of lever 3 and tripping 4 to act on the first component F1 on lever 3 and act on the second component F2 in tripping 4.Snap close 5 be provided with tripping 4 on the snap close tooth 51 of tripping tooth 41 detachable overlap joints, overlap joint by snap close tooth 51 and tripping tooth 41 or separate, snap close 5 is realized integral locking or the release of the bearing 8 of the first end 21 to lever 3, tripping 4 and connecting rod 2, and, snap close 5 provides the snap close power acting in tripping 4 Fs by overlapping by snap close tooth 51 and tripping tooth 41 the overlapped points D0 forming, and acts on the second component F2 in tripping 4 and can realize and the balance of described snap close power Fs by balanced controls.Overlap joint cooperation described here refers between snap close tooth 51 and tripping tooth 41 and can realize the separable overlap joint as shown in Fig. 1,3,4,5, under the state overlapping at snap close tooth 51 as shown in Figure 1,3 and tripping tooth 41, snap close 5 coordinates with the overlap joint of tripping tooth 41 by snap close tooth 51, apply snap close power Fs to tripping 4, and under the state separating with tripping tooth 41 at the snap close tooth 51 as shown in Fig. 4 to 5, between snap close 5 and tripping 4, there is not the interactively of power.
Because the U-shaped connecting rod of the operating mechanism of existing circuit breaker couples together by the through hole at tripping part middle part, be that U-shaped connecting rod is arranged in the through hole at tripping part middle part all the time, between U-shaped connecting rod and tripping part, adopt chain connection, so U-shaped connecting rod is subject to the constraint of hinge can not depart from tripping part, this makes all to act on tripping part for the actuating force of the U-shaped connecting rod of the elastic force of balanced lever spring, and the active force being subject on tripping part is whole actuating force.And, hinge (being actuating force application point) between U-shaped connecting rod and tripping part is near the engagement place (being tripping force application point) between tripping part and snap close piece, be that actuating force is suitable with respect to the length of the arm of force of tripping part rotating fulcrum with respect to the arm of force and the tripping force of tripping part rotating fulcrum, so require the size of tripping force suitable with actuating force, even sometimes exist tripping force need be greater than the problem of actuating force.All act on tripping part for the actuating force of existing small type circuit breaker operating mechanism connecting rod and make the excessive problem of tripping force, operating mechanism of the present utility model is by being formed on component groove 31 on lever 3, and by this component groove 31 with stressed groove 42 in tripping 4 first end 21 to be connected connecting rod 2 and on bearing 8 jointly form constraint, change lever 3 completely, tripping 4, the constraint matching relationship of integral locking/release between snap close 5 and equilibrium of forces relation, particularly material alterations act on by snap close tooth 51 and tripping tooth 41 and overlap the arm of force that the power on the overlapped points D0 forming forms, itself and snap close power second are increased, the proportionate relationship of the 3rd arm of force, can significantly change actuating force with respect to the arm of force of tripping part rotating fulcrum and tripping force the length ratio with respect to these two arm of forces of the arm of force of tripping part rotating fulcrum, so in the time increasing reset of breaker power and contact pressure, can make the U-shaped pole pair thereupon increasing not exclusively act on tripping in the actuating force of operating mechanism, can make U-shaped bar act on the actuating force of tripping with respect to the arm of force of tripping rotating fulcrum simultaneously, be far smaller than snap action in the tripping force of tripping the arm of force with respect to tripping rotating fulcrum, in increasing actuating force, reduce snap action in the tripping force of threading off thereby can realize, efficiently solve the tripping force problem increasing with actuating force of having to that prior art exists, make the tripping force of mechanism still remain on desirable scope.Referring to Fig. 1,3, illustrate described common constraint and external force balance thereof and how to realize.
In the time of breaker closing, tripping 4 and snap close 5 overlap, and make lever 3, tripping 4, snap close 5 form an entirety, and the external force that they are subject to is back-moving spring and touch spring power and connecting rod 2 thrusts to them, be actuating force F, and the thrust F of spring force and connecting rod 2 form equalising torque.The direction of the stressed F of connecting rod 2 is if Fig. 3 is along two working point line directions, and wherein the right point is subject to the power of lever 3 and 4 two parts of tripping simultaneously, is respectively F1 and F2, jointly forms two component of actuating force F.Tripping 4 is as shown in Figure 3 stressed, is the snap close power Fs that F2 and snap close 5 act on, and they act on respectively the both sides of hinge axis Z0, and therefore, F2 is the equilibrant force that a pair of direction is identical with Fs.In fact the center of rotation of hinge axis Z0 is exactly the fulcrum of tripping 4 on lever 3, therefore, L1 in Fig. 3 and the line segment of L2 are respectively F2 and the Fs arm of force about fulcrum Z0, and the transforming relationship of arm of force size is F2 × L1=Fs × L2, under the condition that meets L2 and be greater than L1, can make the value of Fs diminish.Dropout mode is generally rotation snap close, and snap close is separated with tripping, and therefore, the reducing of Fs power value can reduce tripping force effectively.Under snap close tooth 51 and tripping tooth 41 overlap joint states, first end 21 to connecting rod 2 of the component groove 31 of lever 3 and the stressed groove 42 of tripping 4 and on bearing 8 form common constraint, because the interior ring 81(of bearing 8 is shown in Fig. 8) be fixedly connected with the first end 21 of connecting rod 2, so the first end 21 of lever 3, tripping 4 and connecting rod 2 is by snap close 5 integral lockings.The common constraint here refers to that component groove 31 and stressed groove 42 is jointly to the first end 21 of connecting rod 2 power that imposes restriction, and under the effect of this restraining force, makes the first end 21 of connecting rod 2 can not free movement.In this case, as shown in Figure 3, the restraining force of the first end 21 of component groove 31 to connecting rod 2 and the first component F1 balance of being transmitted the actuating force F coming by the operating physical force of operating mechanism by connecting rod 2, the second component F2 balance of the restraining force of the first end 21 of stressed groove 42 of while to connecting rod 2 and described actuating force F.Wherein the restraining force of the first end 21 of component groove 31 to connecting rod 2 is to be transmitted by lever 3 by the elastic force of arm spring 6, the restraining force of the first end 21 of stressed groove 42 to connecting rod 2 is to be transmitted by tripping 4 by the snap close power Fs of snap close 5, the direction of actuating force F and application point are on the A-A line shown in Fig. 3 (crossing the extended line of the axle center J2 of the second end 22 of connecting rod 2 and the line of the axle center FH of first end 21), under this common restrained condition, actuating force F is divided into the first component F1 that acts on component groove 31 and the second component F2 that acts on stressed groove 42, therefore, the actuating force being subject in tripping 4 is not whole actuating force F of operating mechanism, but the component of actuating force F, be the second component F2 shown in Fig. 3.The first component F1 balance of the restraining force of the first end 21 of component groove 31 to connecting rod 2 and actuating force F, its essence is and make the restraining force of the first end 21 of component groove 31 to connecting rod 2 and the relation of the first component F1 formation active force and reaction force, the large I of this relation and active force thereof is determined by the shape and structure of component groove 31.The second component F2 balance of the restraining force of the first end 21 of stressed groove 42 to connecting rod 2 and actuating force F, its essence is also to make the restraining force of the first end 21 of stressed groove 42 to connecting rod 2 and the relation of the second component F2 formation active force and reaction force, and the large I of this relation and active force thereof is determined by the shape and structure of stressed groove 42.Can further understand thus, operating mechanism of the present utility model can be by changing the shape and structure of component groove 31 and stressed groove 42, change the size that actuating force F acts on the second component F2 in tripping 4, in other words, by the appropriate design of the shape and structure to component groove 31 and stressed groove 42, the second component F2 that can make to act in tripping 4 is reduced to desirable degree.As can be seen here, described integral locking refers to that snap close tooth 51 and tripping tooth 41 overlap joints make component groove 31 and stressed groove 4 form common constraint to the bearing 8 on the first end 21 of connecting rod 2, and the restraining force of component groove 31 to the bearing 8 on connecting rod 2 and the first component F1 balance of actuating force F, the restraining force of stressed groove 42 to the bearing 8 on connecting rod 2 and the second component F2 balance of actuating force F, the second component F2 and snap close 5 act on the snap close power Fs balance of tripping 4; Described release refers to that snap close tooth 51 separates with tripping tooth 41 component groove 31 and stressed groove 42 is disengaged the constraint of the bearing 8 on the first end 21 of connecting rod 2, and snap close 5 unlocks to the bearing 8 on lever 3, tripping 4 and connecting rod 2, bearing 8 is retained in component groove 31, and can be in the interior movement of component groove 31.As shown in Figure 7,8, described bearing 8 is preferably rolling bearing, it comprises interior ring 81, outer shroud 82 and multiple rolling element 80, interior ring 81 is fixedly connected with the first end 21 of connecting rod 2, stressed groove 42 under integral locking state in tripping 4 contacts with outer shroud 82 simultaneously and jointly outer shroud 82 is formed to constraint with the component groove 31 on lever 3, and under released state, outer shroud 82 can be in stressed groove 42 and the interior rolling of component groove 31.
The operating mechanism of the second execution mode of the present utility model shown in Fig. 6 is same with the first execution mode comprises housing 10, be pivoted on handle 1 on housing 10, by compound hinges FJ be jointly connected in the lever 3 of housing 10 and snap close 5, by hinge axis Z0 and the hinged tripping 4 of lever 3, and connecting rod 2, arm spring 6, tripping back-moving spring 7, snap close back-moving spring and handle back-moving spring, on the first end 21 of its connecting rod 2, be also provided with bearing 8, in tripping 4, be provided with stressed groove 42 simultaneously.Different from the first execution mode is, the component structure of the second execution mode has adopted the mode of the stressed groove 42 common constraints in restriction face 101 and the tripping 4 on housing 10, that is: described housing 10 is provided with restriction face 101, the first end 21 of connecting rod 2 is provided with bearing 8, and tripping 4 is provided with the stressed groove 42 that jointly can form to bearing 8 constraint with restriction face 101.Meanwhile, be provided with the gathering sill 301 that limits bearing 8 motion tracks on lever 3, bearing 8 can move around in this gathering sill 301.The major function of gathering sill 301 is to hold 8 motion track at released state lower limit dead axle, also be transformed in the process of lock-out state at released state simultaneously, pilot bearing 8 arrives latched position, bearing 8 is contacted, so that the common constraint of restriction face 101 and stressed groove 42 energy shape matched bearings 8 simultaneously with stressed groove 42 with restriction face 101.Gathering sill 301 also can be arranged on housing 10, or gathering sill 301 adopts the double groove structure being located on lever 3 and housing 10.The second end 22 and handle 1 chain connection of described connecting rod 2, the common constraint that the actuating force F that handle 1 acts on connecting rod 2 by this chain connection is subject to housing 10 and tripping 4 is divided into the first component F1 acting on housing 10 and acts on the second component F2 in tripping 4.Described snap close 5 be provided with tripping 4 on the snap close tooth 51 of tripping tooth 41 detachable overlap joints, overlap joint by snap close tooth 51 and tripping tooth 41 or separate, snap close 5 is realized bearing 8 integral lockings or the release of the first end 21 to lever 3, tripping 4 and connecting rod 2, and, snap close 5 provides the snap close power acting in tripping 4 Fs by overlapping by snap close tooth 51 and tripping tooth 41 the overlapped points D0 forming, and acts on the second component F2 in tripping 4 and can realize and the balance of described snap close power Fs by balanced controls.With the first execution mode, overlap joint cooperation described here refers between snap close tooth 51 and tripping tooth 41 and can realize separable overlap joint as shown in Figure 1,3, under the state overlapping at snap close tooth 51 as shown in Figure 1,3 and tripping tooth 41, snap close 5 coordinates with the overlap joint of tripping tooth 41 by snap close tooth 51, apply snap close power Fs to tripping 4, and under the state separating of snap close tooth 51 as shown in Figure 4 and tripping tooth 41, between snap close 5 and tripping 4, there is not the interactively of power.Different from the first execution mode is, described integral locking refers to that snap close tooth 51 and tripping tooth 41 overlap joints make restriction face 101 and stressed groove 42 form common constraint to the bearing 8 on the first end 21 of connecting rod 2, and the restraining force of restriction face 101 to the bearing 8 on connecting rod 2 and the first component F1 balance of actuating force F, the restraining force of stressed groove 42 to the bearing 8 on connecting rod 2 and the second component F2 balance of actuating force F, the second component F2 and snap close 5 act on the snap close power Fs balance of tripping 4; Described release refers to that 41 points, snap close tooth 51 and tripping tooth separates the restriction face of making 101 and stressed groove 42 is disengaged the constraint of the bearing 8 on the first end 21 of connecting rod 2, snap close 5 unlocks to the bearing 8 on lever 3, tripping 4 and connecting rod 2, and bearing 8 is retained in guiding groove 301, and can be in the interior movement of guiding groove 301.Described bearing 8 as shown in Figure 7 and Figure 8, comprise interior ring 81, outer shroud 82 and multiple rolling element 80, interior ring 81 is fixedly connected with the first end 21 of connecting rod 2, under integral locking state, stressed groove 42 in tripping 4 contacts with outer shroud 82 simultaneously and jointly outer shroud 82 is formed to constraint with the restriction face 101 on housing 10, under released state, outer shroud 82 can be on restriction face 101 and stressed groove 42, the interior rolling of guiding groove 301.
Should understand, stressed on the tripping 4 of the first execution mode shown in Fig. 3 and Fig. 6 and the second execution mode, snap close 5 is identical, their dynamic balance or equalising torque structure are also identical, that is: the application point of snap close power Fs is on the tripping tooth 41 of tripping 4 and the overlapped points D0 of snap close tooth 51, and the application point of the second component F2 is on the contact point of the bearing 8 on the stressed groove 4 of tripping 4 and the first end 21 of connecting rod 2.Above-mentioned snap close 5 acts on the snap close power Fs in tripping 4 by overlapping by snap close tooth 51 and tripping tooth 41 the overlapped points D0 forming, be to control stressed groove 4 first end 21 of connecting rod 2 is formed to one of external force of common constraint, it only need with the second component F2 balance.To be provided by the component groove 31 of lever 3 or the restriction face 101 of housing 10 and form two of the common external force retraining, the external force that they provide and the first component F1 balance, only need can control with the second component F2 balance integral locking or the release of the first end 21 of lever 3, tripping 4 and connecting rod 2 to realize snap close power Fs.Obviously, because the first component F1 does not act on tripping 4, so stressed (moment) in snap close 5 and tripping 4 is reduced greatly, and this is not only conducive to reduce tripping force, but also be extremely conducive to the improvement of the performances such as the miniaturization, dropout sensitivity, dropout reliability, useful life of mechanism.
Above-mentioned snap close power Fs and the balance of the second component F2 realize by balanced controls, are realized the second component F2 and snap close 5 and acted on the balance of the snap close power Fs of tripping 4 by balanced controls.The scheme of balanced controls can have two kinds: one is dynamic balance mechanism, and another kind is equalising torque mechanism.The Fs/F2 force rate of dynamic balance mechanism approximates 1, that is to say, snap close power Fs is suitable with the second component F2, because having adopted component groove 31 and stressed groove 4, the utility model the first end 21 of connecting rod 2 is formed to the structure of common constraint, can realize the effect of the second component F2 much smaller than actuating force F, even so in the situation that adopting dynamic balance mechanism, also can reach in increasing the actuating force of operating mechanism, still can reach tripping mechanism and remain on for the tripping force of snap close the effect of desirable scope.The Fs/F2 force rate of another kind equalising torque mechanism can be less than 1, that is to say, snap close power Fs can be much smaller than the second component F2, therefore, for the tripping force of further reducing mechanism, to realize in increasing the actuating force of operating mechanism, also can reach the effect that tripping mechanism reduces for the tripping force of snap close, rear a kind of equalising torque mechanism is preferred scheme.Balanced controls shown in Fig. 3 and Fig. 4 are equalising torque mechanism, it comprise fulcrum taking the hinge axis Z0 in tripping 4 as center of rotation, the second component F2 with respect to the first arm of force L1 of described fulcrum Z0 and snap close power Fs the second arm of force L2 with respect to described fulcrum Z0, and the second arm of force L2 is greater than the first arm of force L1.The span of the first arm of force L1 and the second arm of force L2 can need to determine according to design, if from reducing snap close power Fs, the size of optimizing structure and ensureing the composite request of dropout reliability, span can be preferred by following principle: second arm of force L2 of described snap close power Fs in tripping 4 is 5 to 10 times of the second component F2 of actuating force F the first arm of force L1 in tripping 4.
Referring to Fig. 1, the moment of elasticity Mb of handle back-moving spring, the moment of elasticity Mt of tripping back-moving spring 7, the action direction of the moment of elasticity Ms of the moment of elasticity Mg of arm spring 6 and snap close back-moving spring can be selected multiple concrete assembled scheme according to topology layout, preferred scheme is: described handle action of reset spring is in the direction of the moment of elasticity Mb of handle 1, the direction of moment of elasticity Mg that direction and the arm spring 6 that tripping back-moving spring 7 acts on the moment of elasticity Mt of tripping 4 acts on lever 3 is identical, snap close action of reset spring acts on the opposite direction of the moment of elasticity Mg of lever 3 in the direction of the moment of elasticity Ms of snap close 5 and arm spring 6.In addition, the mounting connection structure of handle back-moving spring, tripping back-moving spring 7, arm spring 6 and snap close back-moving spring also can have multiple concrete structure scheme, preferred scheme is: the two ends of described handle back-moving spring are connected with handle 1, housing 10 respectively, the two ends of described arm spring 6 are connected with lever 3, housing 10 respectively, the two ends of described tripping back-moving spring 7 are connected with lever 3, tripping 4 respectively, and the two ends of described snap close back-moving spring are connected with lever 3, snap close 5 respectively.Should understand, the structure of the moment of elasticity Ms of handle back-moving spring, tripping back-moving spring 7, arm spring 6 and snap close back-moving spring and the mode of component structure are irrelevant, in other words, the frame mode of the handle back-moving spring of the first execution mode and the second execution mode, tripping back-moving spring 7, arm spring 6 and snap close back-moving spring can be identical.
The operation principle of the operating mechanism of the first execution mode and the second execution mode and course of action are identical, and the first execution mode providing below in conjunction with Fig. 1,4,5 illustrates operation principle and the course of action of operating mechanism of the present utility model.
The stable state of operating mechanism shown in Fig. 1 in closing a floodgate, the overlap joint of snap close tooth 51 and tripping tooth 41 is in stable state, component groove 31 and stressed groove 4 form common constraint to the first end 21 of connecting rod 2, and the first end 21 of lever 3, tripping 4 and connecting rod 2 and on bearing 8 by snap close 5 integral lockings.Under Fig. 1 state, the tripping mechanism (not shown) of miniature circuit breaker drives tripping 4 to counterclockwise rotating, arrive the moment transition state shown in Fig. 4, at this state, snap close tooth 51 separates with tripping tooth 41, component groove 31 and stressed groove 42 are disengaged for the constraint of the bearing 8 on the first end 21 of connecting rod 2, it is the restraining force that stressed groove 42 and component groove 31 remove the first end 21 to connecting rod 2, snap close 5 is for lever 3, the first end 21 of tripping 4 and connecting rod 2 unlock (first end 21 that is tripping 4 and connecting rod 2 can move with respect to lever 3), thereby lever 3 is rotated under the elastic force effect of arm spring 6 to counter clockwise direction, bearing 8 on the first end 21 of connecting rod 2 is retained in also can be in the interior slip of component groove 31 in component groove 31, the slip of the first end 21 of connecting rod 2 is ordered about tripping 4 and is rotated to clockwise direction, arrive the state shown in Fig. 5, handle 1 arrives the stable state of tripping operation (separating brake) under the elastic force effect of handle back-moving spring (not shown) to counterclockwise rotation, the first end 21 of the rotation drivening rod 2 of handle 1 back slides in component groove 31, so that tripping 4 back (counterclockwise) rotation under the elastic force effect of tripping back-moving spring 7, snap close 5 is back (clockwise direction) rotation under the elastic force effect of snap close back-moving spring (not shown), until shown in snap close tooth 51 automatically reset to overlap joint stable state with tripping tooth 41.Under stable state after separating brake or the tripping operation of Fig. 5, the extended line of the axle center J2 of the second end 22 of connecting rod 2 and the line of the axle center FH of first end 21 be transformed into the revolute pair Z1 of handle 1 center of rotation above, component groove 31 and stressed groove 42 form again common constraint to the first end 21 of connecting rod 2, and the first end 21 of lever 3, tripping 4 and connecting rod 2 is again by snap close 5 integral lockings.If pulling handle 1 under the gate-dividing state shown in Fig. 5 rotates to clockwise direction, because the first end 21 of lever 3, tripping 4 and connecting rod 2 is by snap close 5 integral lockings, so promoting lever 3, tripping 4, snap close 5 entirety by connecting rod 2, the rotational of handle 1 rotates to clockwise direction, and make arm spring 6 energy storage, until the extended line of the axle center J2 of the second end 22 of connecting rod 2 and the line of the axle center FH of first end 21 is transformed into below the center of rotation of revolute pair Z1 of handle 1, make operating mechanism get back to the combined floodgate stable state shown in Fig. 1.
Referring to Fig. 3 and Fig. 6, owing to there being coordinating of relatively moving between the bearing 8 on the first end 21 of connecting rod 2 and the stressed groove 42 of tripping 4, simultaneously, component groove 31 on bearing 8 and lever 3 or the restriction face 101 on housing 10 also exist, the cooperation relatively moving, therefore exist in the process of threading off, the described cooperation relatively moving must make bearing 8 respectively with stressed groove 42, between component groove 31 or restriction face 101, produce frictional force, the existence of these frictional force need to strengthen the actuating force of operating mechanism and (close a floodgate comprising carrying out, the operating physical force of sub-switching operation and there is the elastic force of arm spring 6 of energy-storage function), if the excessive reliability decrease that also may cause operating mechanism responsiveness to slow down or thread off action of the frictional force FM between its middle (center) bearing 8 and stressed groove 42.In order to solve, frictional force FM slows down for operating mechanism responsiveness or the problem of the reliability decrease of the action of threading off, can solve with respect to the 3rd arm of force L3 of fulcrum Z0 with respect to the first arm of force L1, the frictional force Fm of fulcrum Z0 by appropriate design the second component F2, the second component F2 of described actuating force F acts on moment in tripping 4 and should be greater than described frictional force Fm and act on the moment in tripping 4.Certainly, moment described here is all for the jointed shaft of tripping 4 is fulcrum Z0, can convert arm of force solution below to according to principle of moment balance: described the second component F2 acting in tripping 4 is less than the frictional force Fm that acts in tripping 4 the 3rd arm of force L3 with respect to fulcrum Z0 with respect to the first arm of force L1 of fulcrum Z0; Or the coefficient of friction U < (L1/L3) of the material that selection is relevant to frictional force Fm and structure.Obviously, these solutions, have increased difficulty to the Design and manufacture of operating mechanism, also may contradict with the Miniaturization Design of operating mechanism simultaneously.For this reason, the utility model has adopted the solution of bearing 8, utilize the elasticity of rolling bearing, greatly reduce the coefficient of friction relevant to frictional force Fm, thereby not only can reduce the difficulty that manufactures and designs of operating mechanism, be conducive to the Miniaturization Design of operating mechanism, also can reduce the increase of actuating force simultaneously, the performance of operating mechanism is further improved.
The foregoing is only preferred embodiment of the present utility model, all technical equivalences of making according to the utility model claim change and amendment, within all should being considered as covering scope of the present utility model.
Claims (10)
1. the operating mechanism of miniature circuit breaker, comprise handle (1) on the housing (10) that is pivoted on this circuit breaker, by compound hinges FJ be jointly connected in the lever (3) of housing (10) and snap close (5), by hinge axis Z0 and the hinged tripping of lever (3) (4), and connecting rod (2), arm spring (6), tripping back-moving spring (7), snap close back-moving spring and handle back-moving spring, it is characterized in that:
Described lever (3) is provided with component groove (31), the first end (21) of described connecting rod (2) is provided with the bearing (8) that can move around in this component groove (31), and described tripping (4) is provided with the stressed groove (42) that jointly can form to bearing (8) constraint with described component groove (31);
Described handle (1) is by providing actuating force F with the chain connection of second end (22) of connecting rod (2) to connecting rod (2), the first component F1 that this actuating force F is divided into by the common constraint of lever (3) and tripping (4) to act on lever (3) and act on the second component F2 in tripping (4);
Described snap close (5) be provided with tripping (4) on the snap close tooth (51) of the detachable overlap joint of tripping tooth (41), overlap joint by snap close tooth (51) and tripping tooth (41) or separate, snap close (5) is realized lever (3), integral locking or the release of the bearing (8) of the first end (21) of tripping (4) and connecting rod (2), and, snap close (5) provides the snap close power acting in tripping (4) Fs by overlapping by snap close tooth (51) and tripping tooth (41) the overlapped points D0 forming, described upper the second component F2 of tripping (4) that acts on can realize and the balance of described snap close power Fs by balanced controls.
2. the operating mechanism of miniature circuit breaker according to claim 1, is characterized in that:
Described integral locking refers to that snap close tooth (51) and tripping tooth (41) overlap joint make the bearing (8) on component groove (31) and stressed groove (42) first end (21) to connecting rod (2) form constraint jointly, and the restraining force of component groove (31) to the bearing (8) on connecting rod (2) and the first component F1 balance of actuating force F, the restraining force of stressed groove (42) to the bearing (8) on connecting rod (2) and the second component F2 balance of actuating force F, the second component F2 and snap close (5) act on the snap close power Fs balance of tripping (4),
Described release refers to that snap close tooth (51) separates with tripping tooth (41) constraint of the bearing (8) on component groove (31) and stressed groove (42) first end (21) to connecting rod (2) is disengaged, and snap close (5) unlocks to the bearing (8) on lever (3), tripping (4) and connecting rod (2), bearing (8) is retained in component groove (31), also can in component groove (31), moves.
3. the operating mechanism of miniature circuit breaker according to claim 1 and 2, it is characterized in that: described bearing (8) is rolling bearing, comprise interior ring (81), outer shroud (82) and multiple rolling element (80), wherein, ring (81) is fixedly connected with the first end (21) of connecting rod (2), under integral locking state, stressed groove (42) in tripping (4) contacts with described outer shroud (82) simultaneously and jointly outer shroud (82) is formed to constraint with the component groove (31) on lever (3), under released state, described outer shroud (82) can roll in stressed groove (42) and component groove (31).
4. the operating mechanism of miniature circuit breaker, comprise handle (1) on the housing (10) that is pivoted on this circuit breaker, by compound hinges FJ be jointly connected in the lever (3) of housing (10) and snap close (5), by hinge axis Z0 and the hinged tripping of lever (3) (4), and connecting rod (2), arm spring (6), tripping back-moving spring (7), snap close back-moving spring and handle back-moving spring, it is characterized in that:
Described housing (10) is provided with restriction face (101), the first end (21) of described connecting rod (2) is provided with bearing (8), described tripping (4) is provided with the stressed groove (42) that jointly can form to bearing (8) constraint with this restriction face (101), gathering sill (301) is arranged on lever (3) and/or housing (10), be used for limiting the motion track of bearing (8), bearing (8) can move around in this gathering sill (301);
Described handle (1) is by providing actuating force F with the chain connection of second end (22) of connecting rod (2) to connecting rod (2), the first component F1 that this actuating force F is divided into by the common constraint of housing (10) and tripping (4) to act on housing (10) and act on the second component F2 in tripping (4);
Described snap close (5) be provided with tripping (4) on the snap close tooth (51) of the detachable overlap joint of tripping tooth (41), overlap joint by snap close tooth (51) and tripping tooth (41) or separate, snap close (5) is realized lever (3), integral locking or the release of the bearing (8) of the first end (21) of tripping (4) and connecting rod (2), and, snap close (5) provides the snap close power acting in tripping (4) Fs by overlapping by snap close tooth (51) and tripping tooth (41) the overlapped points D0 forming, described upper the second component F2 of tripping (4) that acts on can realize and the balance of described snap close power Fs by balanced controls.
5. the operating mechanism of miniature circuit breaker according to claim 4, is characterized in that:
Described integral locking refers to that snap close tooth (51) and tripping tooth (41) overlap joint make the bearing (8) on restriction face (101) and stressed groove (42) first end (21) to connecting rod (2) form constraint jointly, and the restraining force of restriction face (101) to the bearing (8) on connecting rod (2) and the first component F1 balance of actuating force F, the restraining force of stressed groove (42) to the bearing (8) on connecting rod (2) and the second component F2 balance of actuating force F, the second component F2 and snap close (5) act on the snap close power Fs balance of tripping (4),
Described release refers to that snap close tooth (51) separates the bearing (8) on the restriction face of making (101) and stressed groove (42) first end (21) to connecting rod (2) constraint with tripping tooth (41) is disengaged, snap close (5) unlocks to the bearing (8) on lever (3), tripping (4) and connecting rod (2), and bearing (8) is retained in guiding groove (301), also can in guiding groove (301), moves.
6. according to the operating mechanism of the miniature circuit breaker described in claim 4 or 5, it is characterized in that: described bearing (8) is rolling bearing, comprise interior ring (81), outer shroud (82) and multiple rolling element (80), wherein, ring (81) is fixedly connected with the first end (21) of connecting rod (2), under integral locking state, stressed groove (42) in tripping (4) contacts with outer shroud (82) simultaneously and jointly outer shroud (82) is formed to constraint with the restriction face (101) on housing (10), under released state, described outer shroud (82) can be gone up and stressed groove (42) at restriction face (101), in guiding groove (301), roll.
7. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: described compound hinges FJ comprises 1 pin-and-hole (32) of being formed on lever (3), be formed on 2 coaxial apertures (50) on snap close (5) and 1 inserts pin-and-hole (32) and the interior bearing pin of coaxial aperture (50), and described bearing pin and pin-and-hole (32), coaxial aperture (50) are rotatably assorted.
8. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: the two ends of described tripping back-moving spring (7) respectively with lever (3), tripping (4) connects, the two ends of described snap close back-moving spring respectively with lever (3), snap close (5) connects, described handle action of reset spring is in the direction of the moment of elasticity Mb of handle (1), the direction of moment of elasticity Mg that direction and the arm spring (6) that tripping back-moving spring (7) acts on the moment of elasticity Mt of tripping (4) acts on lever (3) is identical, described snap close action of reset spring acts on the opposite direction of the moment of elasticity Mg of lever (3) in the direction of the moment of elasticity Ms of snap close (5) and arm spring (6).
9. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: described balanced controls are equalising torque mechanism, comprise fulcrum taking the hinge axis Z0 in tripping (4) as center of rotation, the second component F2 with respect to the first arm of force L1 of described fulcrum Z0 and snap close power Fs the second arm of force L2 with respect to described fulcrum Z0, and the second arm of force L2 is greater than the first arm of force L1.
10. the operating mechanism of miniature circuit breaker according to claim 9, is characterized in that: described snap close power Fs is that the second component F2 of described actuating force F is with respect to 5 to 10 times of the first arm of force L1 in tripping (4) with respect to the second arm of force L2 in tripping (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133126.1U CN203859083U (en) | 2014-03-24 | 2014-03-24 | Operation mechanism of small circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133126.1U CN203859083U (en) | 2014-03-24 | 2014-03-24 | Operation mechanism of small circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859083U true CN203859083U (en) | 2014-10-01 |
Family
ID=51608925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420133126.1U Expired - Lifetime CN203859083U (en) | 2014-03-24 | 2014-03-24 | Operation mechanism of small circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203859083U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847629A (en) * | 2017-04-11 | 2017-06-13 | 厦门大恒科技有限公司 | Miniature circuit breaker and circuit protection device |
| CN108010820A (en) * | 2017-12-22 | 2018-05-08 | 上海诺雅克电气有限公司 | Breaker |
| CN117393394A (en) * | 2023-12-12 | 2024-01-12 | 苏州普兆新能源设备有限公司 | Switching-on and switching-off mechanism for circuit breaker |
-
2014
- 2014-03-24 CN CN201420133126.1U patent/CN203859083U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847629A (en) * | 2017-04-11 | 2017-06-13 | 厦门大恒科技有限公司 | Miniature circuit breaker and circuit protection device |
| CN106847629B (en) * | 2017-04-11 | 2018-07-20 | 厦门大恒科技有限公司 | Miniature circuit breaker and circuit protection device |
| CN108010820A (en) * | 2017-12-22 | 2018-05-08 | 上海诺雅克电气有限公司 | Breaker |
| CN117393394A (en) * | 2023-12-12 | 2024-01-12 | 苏州普兆新能源设备有限公司 | Switching-on and switching-off mechanism for circuit breaker |
| CN117393394B (en) * | 2023-12-12 | 2024-03-12 | 苏州普兆新能源设备有限公司 | Switching-on and switching-off mechanism for circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3404691B1 (en) | Operation mechanism for miniature circuit breaker | |
| CN203859083U (en) | Operation mechanism of small circuit breaker | |
| CN104134588B (en) | A kind of operating means of multipole small-size circuit breaker | |
| CN202816829U (en) | High-stability miniature circuit breaker | |
| CN202405200U (en) | Breaker mechanism | |
| CN203038867U (en) | Operating mechanism of circuit breaker | |
| CN203760398U (en) | Operating mechanism of miniature circuit breaker | |
| CN203859084U (en) | Operation mechanism of small circuit breaker | |
| CN108417459A (en) | A kind of operating mechanism and breaker of breaker | |
| CN103928270B (en) | The operating mechanism of miniature circuit breaker | |
| CN102436983B (en) | Auxiliary release device of low-voltage breaker | |
| CN203445073U (en) | Operation mechanism of double-breakpoint molded case circuit breaker | |
| CN201210469Y (en) | Assistant tripping mechanism for circuit breaker | |
| CN203925033U (en) | Front door lock gripping mechanism | |
| CN110491748A (en) | Earth leakage circuit breaker | |
| CN202259090U (en) | Auxiliary tripping device of low-voltage circuit breaker | |
| CN103325632B (en) | A kind of can the circuit breaker manipulation mechanism of rapid-releasing | |
| CN205984675U (en) | Ground connection sword hand movement (HM) divide -shut brake operating mechanism and use circuit breaker of this operating mechanism | |
| CN102820149B (en) | Spring force differential interlocking device among three circuit breakers | |
| CN210926508U (en) | Power cable plug heavy load connector and power cable | |
| CN107452567A (en) | The operating mechanism of miniature circuit breaker | |
| CN205789805U (en) | Chopper | |
| CN202695344U (en) | Breaker with balanced type control mechanisms | |
| CN208422812U (en) | Breaker | |
| CN205789776U (en) | The miniature circuit breaker of modularization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Chint Electrics Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2020310000006 Denomination of utility model: Operating mechanism of miniature circuit breaker Granted publication date: 20141001 License type: Common License Record date: 20200518 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of utility model: Operating mechanism of miniature circuit breaker Granted publication date: 20141001 License type: Common License Record date: 20211025 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |
|
| CX01 | Expiry of patent term |