CN106960768B - The operating mechanism of miniature circuit breaker - Google Patents
The operating mechanism of miniature circuit breaker Download PDFInfo
- Publication number
- CN106960768B CN106960768B CN201610012560.8A CN201610012560A CN106960768B CN 106960768 B CN106960768 B CN 106960768B CN 201610012560 A CN201610012560 A CN 201610012560A CN 106960768 B CN106960768 B CN 106960768B
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- China
- Prior art keywords
- moving contact
- contact
- kinematic link
- driving
- circuit breaker
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
Abstract
The operating mechanism of miniature circuit breaker, including handle, kinematic link, static contact and moving contact further include tension spring and tripping lever, one end of kinematic link couples with handle hinge, the other end and moving contact cooperate, and one end of the tension spring is fixed on the shell, and the other end is connect with moving contact；The moving contact is driven jointly by tension spring and kinematic link, for moving contact and static contact closure provide guarantee electrical contact reliability needed for contact pressure and excess of stroke elastic force, also, the tension spring provides for the disjunction of driving moving contact and static contact for energy storage elastic force needed for reset；Tripping lever is arranged on the moving contact, and for controlling the cooperation of the locking and unlocking between kinematic link and moving contact, tripping lever separates kinematic link so that operating mechanism is threaded off automatically with moving contact when failure occurs.The mechanism can effectively simplify structure, reduce manufacturing cost, improve production efficiency and optimization mechanism performance.
Description
Technical field
The present invention relates to the operating mechanisms of miniature circuit breaker, are particularly suitable for low-voltage moulded case a/D small circuit breaker
Operating mechanism, belong to Low Voltage Electrical Apparatus.
Background technique
It is well known that the operating mechanism of miniature circuit breaker is used to drive disjunction/closure of moving contact and static contact, and pass through
Disjunction/the closure controls the combined floodgate, separating brake and tripping of breaker.Four-bar mechanism is the operation machine of existing miniature circuit breaker
The most common mechanism of structure most typically, the handle connecting including one with kinematic link constitute a toggle；One moving contact is supported
Device has one piece of rotor plate being installed in rotation on pivot；An and machinery that can be disconnected by the movement of trip(ping) bar
Chain (also commonly referred to as locking), bimetal leaf are connected on trip(ping) bar by a pivot link with single-direction transmission.On
The mechanical chain stated be by a stop catch of trip(ping) bar with a lock bolt being rotatably mounted in the mandrel of plate (also commonly referred to as
Lever) composition is matched, connecting rod is directly connected on lock bolt, and it is this to have assemblied a deceleration transmission level, it can make to grasp
Make the reduction of mechanism tripping force.One feature of this mechanism is moving contact and contact support is two independent elements, in order to obtain
Necessary excess of stroke function, it is necessary to travel mechanism be set between moving contact and contact are supported, for this purpose, moving contact and contact are supported
Rotor plate between connection generally use two ways, one is with gluing knot or welding together, the disadvantage is that complex procedures,
And firmness is unreliable, another kind is that moving contact is fixed on contact by button spring to support, is not fixed on operating mechanism
In rotary shaft, the disadvantage is that contact rotating arm is caused to lengthen, mechanism action slows, and is unfavorable for product opening performance.Moreover four
Contact support in link mechanism is fixed together generally by a spring and a swivel plate, and contact is supported and rotation
Rotating plate can be rotated with small range, guarantee the contact pressure and the excess of stroke of product with this, it is seen then that existing that moving contact is passed through welding
Or spring is fixed on the mode in contact support jointly the problem is that number of components is more, structure is complicated for transmission chain, and assembles and adjust
Examination is complicated, and assembly efficiency further decreases, to influence breaker miniaturization and low cost.In addition, existing miniature circuit breaker
Operating mechanism in the structure of mechanical chain establish on transmission chain between lock bolt and trip(ping) bar, and generally use pointed tooth
It engages (also commonly referred to as hasp etc.), the defect of the structure of this pointed tooth engagement is that pointed tooth is easy to wear, to influence product
Reliability and service life.
It is new to the improvement of the operating mechanism of miniature circuit breaker with the continuous improvement of miniaturization and multi-functional requirement
The demand of technology is increasingly urgent to, and technological improvement direction may be summarized to be miniaturization, low cost and including reliability, service life
Inside performance optimization, and with the common technology core of these directional correlations be simplify structure, reduce part while, can
Overcome the restriction for influencing the weak environment of performance.
Summary of the invention
The present invention is to solve the above problem of the existing technology, it is desirable to provide a kind of operation machine of miniature circuit breaker
Structure can further improve the reliability of circuit breaker operation mechanism, assembly is adjusted while simplifying structure, reducing amount of parts
The convenience and production efficiency of examination.
To achieve the above object, present invention employs following technical solutions:
A kind of operating mechanism of miniature circuit breaker, including be pivoted on shell 1 handle 2, kinematic link 3 and set
Static contact 10 and moving contact 4 in shell 1 are set, further includes tension spring 13 and tripping lever 5, one end of the kinematic link 3
With 2 hinge-coupled of handle, the other end and moving contact 4 cooperate, and one end of the tension spring 13 is fixed on shell 1, the other end and dynamic
Contact 4 connects；The moving contact 4 is driven jointly by the tension spring 13 and kinematic link 3, is moving contact 4 and static contact 10
Closure provide guarantee electrical contact reliability needed for contact pressure and excess of stroke elastic force, also, the tension spring 13 is that driving is dynamic
The disjunction of contact 4 and static contact 10 is provided for energy storage elastic force needed for reset；The dynamic touching is arranged in tripping lever 5
On first 4, for controlling the cooperation of the locking and unlocking between kinematic link 3 and moving contact 4, the tripping lever 5 is sent out in failure
The kinematic link 3 is separated with moving contact 4 so that operating mechanism is threaded off automatically when raw.
Preferably, mechanism shaft 6 and limit shaft 7 are equipped in the shell 1, the moving contact 4 is pivotally mounted outside
In mechanism shaft 6 in shell 1, the moving contact 4 is fixed in the mechanism shaft 6 and limit shaft 7 of shell 1 by tension spring 13.
Preferably, the moving contact 4 is rotatably installed in mechanism shaft 6 by the arc-shaped slot 41 of strip thereon,
Installation cooperation between the arc-shaped slot 41 and mechanism shaft 6 of the moving contact 4 is included in moving contact 4 and static contact 10 is closed
In the state of have excess of stroke gap h.
Preferably, arc-shaped slot 41, driving groove 42, pivot hole 43, limiting slot 44, spring are provided on the moving contact 4
Mechanism shaft 6 on hook 45 and movable contact 40, the arc-shaped slot 41 and shell 1, which is installed, to be cooperated；The limiting slot 44 with
Limit shaft 7 on shell 1 is engaged；The driving end 32 of driving groove 42 and the kinematic link 3 on the moving contact 4
Transmission cooperates, and the pivot hole 43 on the moving contact 4 couples with the installation of pivot 52 on the tripping lever 5.
Preferably, arc-shaped slot 41 and pivot hole 43 are provided on the moving contact 4, one end is equipped with the driving groove of spill
42, the other end is equipped with movable contact 40, and carbine 45 and limiting slot 44 are located at the two sides of moving contact 4, and carbine 45 is located at arc
Between shape slot 41 and driving groove 42, for limiting slot 44 between arc-shaped slot 41 and moving contact 4, pivot hole 43 is located at limiting slot 44
Between arc-shaped slot 41, arc-shaped slot 41 is located on moving contact 4 close to 45 side of carbine, and pivot hole 43 is located on moving contact 4
Close to 44 side of limiting slot.
Preferably, one end of the moving contact 4 is equipped with the driving groove with the transmission cooperation of the driving end 32 of kinematic link 3
42, the tripping lever 5 is pivoted on moving contact 4, thread off lever 5 on be provided with tripping driving section 53 and for realizing
The lock face 51 of lock fit and unlock cooperation between kinematic link 3 and moving contact 4.
Preferably, the lock fit is that the lock face 51 made thread off on lever 5 and the driving end 32 of kinematic link 3 support
It connects, and the driving end 32 is locked in the driving groove 42 on moving contact 4, the driving end 32 of kinematic link 3 and tripping
The lock face 51 of lever 5 generates collective effect in the latching force of driving groove 42；The unlock cooperation makes to thread off on lever 5
Lock face 51 is separated with the driving end 32 of kinematic link 3, and makes the driving end 32 can be in the driving groove 42 on moving contact 4
Sliding.
Preferably, the tripping lever 5 is additionally provided with the resetting apparatus that driving tripping lever 5 is rotated around its pivot 52,
The reset rotation of tripping lever 5 drives the lock face 51 on tripping lever 5 to abut with the driving end 32 of kinematic link 3, the abutting
The driving end 32 is locked in the driving groove 42 on moving contact 4, with realize the kinematic link 3 and moving contact 4 it
Between lock fit.
Preferably, the tripping driving section 53 on the described tripping lever 5 by the trip gear of miniature circuit breaker driving around
The rotation of its pivot 52 drives the lock face 51 of tripping lever 5 to separate with the driving end 32 of kinematic link 3, which makes described
Driving end 32 can slide in the driving groove 42 on moving contact 4, to realize the solution between the kinematic link 3 and moving contact 4
Lock cooperation.
Preferably, the extended line of the line between the both ends 31,32 of the kinematic link 3 is in moving contact 4 and static contact
Stablize under 10 closed states in the lower section of the center of rotation 0 of handle 2；Extension between the both ends 31,32 of the kinematic link 3
Line is stablized under moving contact 4 and 10 disjunction state of static contact in the top of the center of rotation 0 of handle 2；The kinematic link 3
Extended line between both ends 31,32 is transferred to the upper of center of rotation 0 from the lower section of the center of rotation 0 of handle 2 during tripping
Side.
Preferably, in the state that moving contact 4 and static contact 10 are closed, the active force on moving contact 4 includes tension spring 13
Pulling force, static contact 10 act on the contact pressure of the movable contact 40 of moving contact 4, the driving end 32 of kinematic link 3 and tripping lever 5
51 collective effect of lock face in moving contact 4 driving groove 42 latching force, and the conjunction of contact pressure and the latching force
The tension balanced of power and tension spring 13；In the state of moving contact 4 and 10 disjunction of static contact, the active force on moving contact 4 includes drawing
Mechanism shaft 6 on the pulling force of spring 13, shell 1 acts on the restraining force of arc-shaped slot 41, the limit shaft 7 on shell 1 acts on
The resultant force of the pulling force of the contact force of the limiting slot 44 of moving contact 4, the contact force and tension spring 13 acts on arc with mechanism shaft 6
The constraint dynamic balance of shape slot 41.
The operating mechanism of miniature circuit breaker of the invention realizes closure/disjunction transformational structure by using three-link mechanism,
Welding or spring Joining Technology between moving contact and contact support are eliminated, amount of parts is reduced, effectively simplifies structure, reduce
Manufacturing cost.Moreover, by using three-link mechanism and new power architecture, locking structure, excess of stroke structure, closure/disjunction turn
The optimizing design scheme of structure is changed, operating mechanism can provide required excess of stroke function in the same old way, and can also effectively simplify structure, drop
Low manufacturing cost improves production efficiency and optimization mechanism performance.
Detailed description of the invention
Advantages and features of the invention can be seen more clearly from the description of the embodiment shown in that figure, in which:
Fig. 1 is the operation machine for the miniature circuit breaker of the invention that moving contact 4 is in stable disjunction state with static contact 10
The integrally-built floor map of structure.
Fig. 2 is the of the invention of a momentary status during moving contact 4 is operated from disjunction state to closed state
The integrally-built floor map of the operating mechanism of miniature circuit breaker.
Fig. 3 is the operation machine for the miniature circuit breaker of the invention that moving contact 4 is in stable closed state with static contact 10
The integrally-built floor map of structure.
Fig. 4 is the stereoscopic schematic diagram of the moving contact 4 in operating mechanism shown in FIG. 1.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1 to 4 provides, the operating mechanism of miniature circuit breaker of the invention is further illustrated
Specific embodiment.
In the embodiment shown in Fig. 1-3, the operating mechanism of miniature circuit breaker of the invention includes shell 1, static contact 10
(stationary contact is shown schematically in figure), the handle 2 being pivoted on shell 1, the kinematic link 3 with 2 hinge-coupled of handle.
The moving contact 4 that operating mechanism of the invention further includes tension spring 13, is driven jointly by kinematic link 3 and tension spring 13, and for controlling
The tripping lever 5 that locking and unlocking cooperate between kinematic link 3 and moving contact 4 processed.One end 31 of kinematic link 3 and handle 2 are cut with scissors
Chain connection, the driving end 32 and moving contact 4 of the other end cooperate；One end of the tension spring 13 is fixed on shell 1, the other end and institute
The moving contact 4 stated connects, and drives the moving contact 4 jointly by the tension spring 13 and kinematic link 3, be moving contact 4 with
Contact pressure and excess of stroke elastic force needed for the closure of static contact 10 provides guarantee electrical contact reliability, also, the tension spring 13
Disjunction for driving moving contact 4 and static contact 10 is provided for energy storage elastic force needed for reset；The tripping lever 5 is set
It sets on the moving contact 4, for controlling the cooperation of the locking and unlocking between kinematic link 3 and moving contact 4, the tripping
Lever separates the kinematic link 3 with moving contact 4 when failure occurs, so that the operating mechanism is threaded off automatically, and
It is unrelated with operation handle 2.
As in the embodiment disclosed in figs. 1-3, it is arranged on the shell 1 of breaker there are three the axis being attached separately in the shell 1,
, namely for the axis, mechanism shaft 6 and limit shaft 7 of fixed described 13 one end of tension spring, the moving contact 4, which pivots, pacifies for they
In the mechanism shaft 6 in shell 1, the moving contact 4 is fixed on the mechanism shaft 6 and limit shaft 7 of shell 1 by tension spring 13
On, tension spring 13 and limit shaft 7 are located at the two sides of moving contact 4, and limit shaft 7 limits the slewing area of moving contact 4.
As shown in figure 4, be provided on moving contact 4 of the invention arc-shaped slot 41, driving groove 42, pivot hole 43, limiting slot 44,
Mechanism shaft 6 on carbine 45 and movable contact 40, the arc-shaped slot 41 and the shell 1, which is installed, to be cooperated；Described
Limiting slot 44 is engaged with the limit shaft 7 on the shell 1；Driving groove 42 and the biography on the moving contact 4
The driving end 32 of dynamic connecting rod 3 is driven cooperation, the pivot 52 in pivot hole 43 and the tripping lever 5 on the moving contact 4
Installation connection.One end of the tension spring 13 couples with shell 1, and the other end of tension spring 13 couples with the carbine 45 on moving contact 4,
It is fixed on moving contact 4 in the rotary shaft 6 and limit shaft 7 of shell 1 by tension spring 13, also, tension spring 13 is provided needed for dynamic and static contact
Contact pressure, reach the reliability of electrical contact.Kinematic link 3 can be slided and be pushed away in the driving groove 42 of the spill of moving contact 4
Dynamic moving contact 4 rotates, and the moving contact can be rotated around the mechanism shaft 6 reaches dynamic/static contact contact position, and operating mechanism is again
Since the stress point of moving contact 4 changes when button, separate moving contact 4 with mechanism shaft 6.As shown in Figure 4 is of the invention
One particular preferred embodiment, arc-shaped slot 41 and pivot hole 43 are provided on the moving contact 4, and one end is equipped with the transmission of spill
Slot 42, the other end are equipped with movable contact 40, and carbine 45 and limiting slot 44 are located at the two sides of moving contact 4,45 position of carbine
Between arc-shaped slot 41 and driving groove 42, for limiting slot 44 between arc-shaped slot 41 and moving contact 4, pivot hole 43 is located at limiting slot
Between 44 and arc-shaped slot 41, arc-shaped slot 41 is located on moving contact 4 close to 45 side of carbine, and pivot hole 43 is located at moving contact 4
Upper close 44 side of limiting slot.
It can be seen that a beneficial features of the operating mechanism of miniature circuit breaker of the invention be include simultaneously three not
Be same as the organization plan of the prior art: scheme is first is that use three companies being made of kinematic link 3, moving contact 4 and tripping lever 5
Traditional latch lever is omitted in linkage；Scheme second is that use a moving contact 4 structure, traditional contact is omitted
The rotating plate of support and the travel mechanism being arranged between contact support and moving contact or coupling mechanism；Scheme is third is that use one
It is a that the spring structure of energy storage elastic force, contact pressure and excess of stroke elastic force can be provided simultaneously, it may be assumed that still ensure that complete elastic energy accumulation,
The tension spring 13 of the function of Elastic Contact and the elastic excess of stroke, is omitted traditional excess of stroke spring.Essence of the invention is not only to change
The whole structural scheme and working principle of operating mechanism, and certainly will also change the specific structure scheme of operating mechanism, example
Power architecture, locking structure, excess of stroke structure, the closure/disjunction transformational structure of such as mechanism.Obviously this design has structure letter
Feature single, number of components is few to can effectively reduce manufacturing cost, improve production efficiency, while can also be such that the performance of mechanism obtains
To optimization.
Power architecture of the invention relates generally to the force balance structure of elastic force driving structure and core component.Elastic force driving
Structure can there are many specific implementation, the present invention use it is a kind of preferably: tension spring 13 is not only driving moving contact 4
Disjunction with static contact 10 provides energy storage elastic force, and tension spring 13 also provides with the closure of static contact 10 for moving contact 4 and contacts pressure
Power and excess of stroke elastic force.In existing four-bar mechanism, elastic force driving structure must use energy-stored spring and excess of stroke spring, two
The each have their own function of spring, wherein energy-stored spring provides (the i.e. elastic force storage of energy storage elastic force for the disjunction of driving moving contact and static contact
Can), and excess of stroke spring is the contact pressure (i.e. Elastic Contact) and excess of stroke elastic force (i.e. bullet that the closure of moving contact and static contact provides
Property the excess of stroke), lack a spring then therewith lack a function.The present invention uses a tension spring 13, can be achieved with the elastic energy accumulation, bullet
Property contact and elastic three elastic force driving functions of the excess of stroke.Force balance structure of the invention can be there are many specific implementation, this
A kind of preferred mode that invention uses includes following two situation.The first situation is: being closed in moving contact 4 and static contact 10
In the state of (as shown in Figure 3), the active force on moving contact 4 includes the drawing for the carbine 45 that tension spring 13 acts on moving contact 4
Power, static contact 10 act on the lock face 51 of the contact pressure of movable contact 40, the driving end 32 of kinematic link 3 and lever 5 of threading off
Collective effect is in the latching force (biography between driving groove 42 i.e. on the driving end 32 and moving contact 4 of kinematic link 3 of driving groove 42
Dynamic cooperation is in the state of transmission force, there must be the driving force of interaction between driving end 32 and driving groove 42), also,
The resultant force and the tension balanced of tension spring 13 of the contact pressure and latching force.In the first as shown in Figure 3: shell
Mechanism shaft 6 on 1 does not provide restraining force to the arc-shaped slot 41 on moving contact 4, i.e., between mechanism shaft 6 and arc-shaped slot 41
Installation cooperation be in discrete state；Limit shaft 7 on shell 1 does not provide contact force to the limiting slot 44 on moving contact 4, that is, limits
Being engaged in discrete state between the limit shaft 7 on position slot 44 and shell 1.Second situation is: moving contact 4 with it is quiet
In the state of 10 disjunction of contact (as shown in Figure 1), the active force on moving contact 4 includes the bullet that tension spring 13 acts on moving contact 4
Mechanism shaft 6 on the pulling force of spring hook 45, shell 1 acts on the restraining force of the arc-shaped slot 41 on moving contact 4, on shell 1
Limit shaft 7 acts on the contact force of the limiting slot 44 on moving contact 4, the resultant force and arc of the pulling force of the contact force and tension spring 13
The constraint dynamic balance of shape slot 41.Under second situation as shown in Figure 1, on the driving end 32 and moving contact 4 of kinematic link 3
Driving groove 42 between state of the transmission cooperation in not transmission force, although the lock face 51 of tripping lever 5 is in locking shape
State, but phase interaction is not needed and (is actually not present yet) between the driving end 32 of kinematic link 3 and the driving groove 42 on moving contact 4
Driving force.In the state that moving contact 4 and static contact 10 are closed, the active force on moving contact 4 includes that tension spring 13 acts on
Pulling force, the static contact 10 of carbine 45 act on the contact pressure of movable contact 40, the driving end 32 of kinematic link 3 and tripping lever
5 51 collective effect of lock face is in the latching force of driving groove 42, and the resultant force and tension spring of the contact pressure and latching force
13 tension balanced.And in the state of moving contact 4 and 10 disjunction of static contact, the active force on moving contact 4 includes that tension spring 13 is made
Mechanism shaft 6 on the pulling force of carbine 45, shell 1 acts on 41 restraining force of arc-shaped slot, the limit shaft 7 on shell 1
Act on the contact force of limiting slot 44, the resultant force of the pulling force of the contact force and tension spring 13 and the restraining force of arc-shaped slot 41 are flat
Weighing apparatus.It should be appreciated that arriving, force balance structure is to ensure that the operating characteristics of mechanism for the operating mechanism of miniature circuit breaker
With the key of action performance, power architecture of the invention is fairly simple and reasonable, can avoid unnecessary power loss and power it
Between interference, with ensure dynamic balance reliable and stable and operating mechanism movement it is rapid and sensitive.
The locking structure can there are many specific implementation, the present invention use it is a kind of preferably: it is described
Tripping lever 5 on be provided with lock face 51, pivot 52 and tripping driving section 53, the driving end of lock face 51 and kinematic link 3
The cooperation of 32 locking and unlocking, pivot 52 couple with the installation of pivot hole 43 on moving contact 4.The kinematic link 3 and moving contact 4 it
Between locking and unlocking cooperation include lock fit and unlock cooperation, one end of the moving contact 4 is equipped with and kinematic link 3
The driving groove 42 of the transmission cooperation of driving end 32, the tripping lever 5 are pivoted on moving contact 4, are provided on lever 5 of threading off
Thread off driving section 53 and for realizing between kinematic link 3 and moving contact 4 lock fit and unlock cooperate lock face 51.Its
In, the lock fit causes the lock face 51 threaded off on lever 5 to abut with the driving end 32 of kinematic link 3, and by institute
The driving end 32 for the kinematic link 3 stated is locked in the driving groove 42 of moving contact 4, the driving end 32 and tripping thick stick of kinematic link 3
The lock face 51 of bar 5 generates collective effect in the latching force of driving groove 42；The unlock cooperation causes lock face 51 and transmission
The driving end 32 of connecting rod 3 separates, and slide the driving end 32 of the kinematic link 3 can in driving groove 42.Obviously, this
The advantages of frame mode, is that lock fit and unlock cooperation are built upon lock face 51 and kinematic link 3 on tripping lever 5
Driving end 32 (rod-like structure) between cooperation, this cooperation has apparent wear-resistant compared with traditional pointed tooth engagement
Advantage, and biggish latching force can also be provided, can effectively promote the reliability of locking.As shown in Figure 1-3, of the invention is de-
A particular preferred embodiment of lever 5 is detained, the tripping lever 5 includes the lock arm and transmission arm of connection, lock arm end
Portion is equipped with lock face 51, and transmission arm is equipped with tripping driving section 53, V-groove is formed between lock arm and transmission arm, in lock arm
It is equipped with the pivot 52 being rotatably assorted with moving contact 4, tripping lever 5 is installed in the pivot hole 43 of moving contact 4 by pivot 52, is taken off
The V-groove of button lever 5 is correspondingly arranged with limit shaft 7.
The specific locking structure to match with above-mentioned locking and unlocking fit structure can be there are many specific implementation, this
A kind of preferred mode that invention uses includes following two situation.The first situation is: tripping lever 5 is additionally provided with reset dress
(not shown) is set, drives the tripping driving section 53 on tripping lever 5 to rotate around its pivot 52 with it, tripping lever 5 is answered
Position rotation drives lock face 51 thereon to abut with the driving end 32 of kinematic link 3, which is locked in moving contact 4
Driving groove 42 in, i.e. the driving end 32 of lock face 51 and kinematic link 3 is in lock fit state.The resetting apparatus can
Using reset spring (not shown), both ends couple with tripping lever 5 and moving contact 4 respectively.Setting also can be used de-
It detains the elastic angle apparatus (not shown) on lever 5, the angle end of angular flexibility and moving contact 4 or shell 1 establishes friction and/or limit
Position connection.Second situation is: the tripping driving section 53 on the trip gear driving tripping lever 5 of miniature circuit breaker is around its pivot
52 rotations, the rotation drive lock face 51 thereon to separate with the driving end 32 of kinematic link 3, be driven the driving end 32 can
Sliding in slot 42, the i.e. driving end 32 of lock face 51 and kinematic link 3 are in unlock mated condition.Under normal conditions, small-sized disconnected
The trip gear of road device includes two kinds of buckle releasers, and one of which is magnetictrip, when reaching electromagnetic trip condition in circuit,
The striker 12 for being cased with mandril effect spring 11 thereon of magnetictrip pops up, and impinges upon the tripping driving section on tripping lever 5
On 53, rotated with driving tripping lever 5 around its pivot 52.Another kind is thermal trip, when reaching thermal tripping condition in circuit,
Thermoinduction device 9 (such as bimetal leaf device) bending and drive rod 8 pull the tripping driving section 53 on tripping lever 5, with driving
Lever 5 of threading off is rotated around its pivot 52.It is emphasized that: the unlock cooperation only drives tripping lever in trip gear
Occur when 5, only occur during the tripping of miniature circuit breaker in other words, and closes a floodgate and normal separating brake process normal
In will not all occur unlock cooperation.Under normal "on" position (as shown in Figure 3) and normal gate-dividing state (as shown in Figure 1), with
And in normal combined floodgate operating process (process shown in Fig. 3 is arrived in operation as shown in Figure 1) and normal sub-switching operation process (such as Fig. 3 institute
Show operation to process shown in FIG. 1) in, since trip gear does not drive tripping lever 5, tripping lever 5 is always in lock
Determine mated condition, especially because the effect of resetting apparatus, as long as trip gear removes the driving to tripping lever 5, thick stick of threading off
Bar 5 can all automatically reset to lock fit state, so that it is guaranteed that it is reliable with normal separating brake normally to close a floodgate regardless of what position be in
Property.
The excess of stroke structure can be there are many specific implementation, a kind of preferred mode such as Fig. 3 institute that the present invention uses
Show: the moving contact 4 is rotatably installed in mechanism shaft 6 by the arc-shaped slot 41 of strip thereon, moving contact 4 with it is quiet
In the state that contact 10 is closed, there is excess of stroke gap h between the mechanism shaft 6 on the arc-shaped slot 41 and shell 1 of moving contact 4,
By the arc-shaped slot 41 of strip, and non-circular arc-shaped slot 41 realizes excess of stroke gap.The excess of stroke gap is by arc
What the installation cooperation structure of the mechanism shaft 6 on shape slot 41 and shell 1 was realized, this installation cooperation, so that being mounted on mechanism
Arc-shaped slot 41 in shaft 6 can be slidably matched with mechanism shaft 6 so that operation moving contact 4 and the closure of static contact 10 (i.e. by
Disjunction state shown in FIG. 1 operation is closed state shown in Fig. 3) during can form excess of stroke gap h, pass through excess of stroke gap
H compensates the excess of stroke of well known moving contact.Specific overshooting compensation principle is as follows: under disjunction state shown in Fig. 1, manipulator
Handle 2 rotates in a clockwise direction, and pushes moving contact 5 to rotate in a clockwise direction around mechanism shaft 6 by kinematic link 3, and with
Static contact 10 contacts, and reaches momentary status shown in Fig. 2, in this case and before this state, moving contact 5 is with mechanism shaft 6
For fulcrum rotation, i.e. excess of stroke gap h between mechanism shaft 6 on arc-shaped slot 41 and shell 1 is 0.When handle 2 continues to rotate
When, the rotating fulcrum decorporation shaft 6 of moving contact 5 is simultaneously transferred to static contact 10, and moving contact 4 with static contact 10 at this time to connect
Contact is center of circle rotation, and moving contact 4 separates excess of stroke gap h with the mechanism shaft 6 on shell 1, until reaching as shown in Figure 3 complete
Full-application position completes normal closing operation.Certainly, under closed state shown in Fig. 3, reverse operation handle 2 can be returned to
Disjunction state shown in FIG. 1 completes normal sub-switching operation, and the position of each action piece is the inversion of aforesaid operations.
The closure/disjunction transformational structure can be there are many specific implementation, a kind of preferred side that the present invention uses
Formula is: under moving contact 4 and 10 closed state of static contact, the extended line of the line between the both ends 31,32 of kinematic link 3 is stablized
In the lower section (as shown in Figure 3) of the center of rotation 0 of handle 2, stablize operating mechanism in "on" position；In moving contact 4 and stationary contact
Under first 10 disjunction state, which stablizes in the top (as shown in Figure 3) of the center of rotation 0 of handle 2, stablizes operating mechanism
In gate-dividing state；During tripping, which is transferred to the upper of center of rotation 0 from the lower section of the center of rotation 0 of handle 2
Side.Thus it is conceivable that, during tripping, it is by the unlock of tripping lever 5 that the extended line is transferred to top from below
Caused by acting, i.e., when lever 5 of threading off rotates under the driving of trip gear around its pivot 52, lock face 51 and biography thereon
The driving end 32 of dynamic connecting rod 3 separates can simultaneously slide in driving groove 42, which causes the driving end 32 of kinematic link 3 to moving down
Dynamic, which causes the extended line to rotate clockwise around one end of kinematic link 3 31, eventually leads to the extended line under
Side crosses inflection point (center of rotation 0 of handle 2) and is transferred to top, and the once described extended line crosses inflection point, then tension spring 13
Elastic force just drive moving contact 4 to disjunction direction (counter clockwise direction) rotate, until moving contact 4 be in it is shown in FIG. 1 stable
Disjunction state, namely complete trip operation.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (11)
1. a kind of operating mechanism of miniature circuit breaker, including be pivoted on shell (1) handle (2), kinematic link (3) with
And the static contact (10) and moving contact (4) being arranged in shell (1), it is characterised in that: further include tension spring (13) and tripping lever
(5), one end of the kinematic link (3) and handle (2) hinge-coupled, the other end and moving contact (4) cooperate, the tension spring
(13) one end is fixed on shell (1), and the other end is connect with moving contact (4)；The moving contact (4) is by the tension spring
(13) it is driven jointly with kinematic link (3), provides guarantee electrical contact reliability institute for the closure of moving contact (4) and static contact (10)
The contact pressure and excess of stroke elastic force needed, also, the tension spring (13) is that driving moving contact (4) and the disjunction of static contact (10) mention
For for energy storage elastic force needed for reset；Tripping lever (5) is arranged on the moving contact (4), for controlling transmission
Locking and unlocking cooperation between connecting rod (3) and moving contact (4), the tripping lever (5) makes described when failure occurs
Kinematic link (3) is separated with moving contact (4) so that operating mechanism is threaded off automatically.
2. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that: be equipped in the shell (1)
Mechanism shaft (6) and limit shaft (7), the moving contact (4) is pivoted in the mechanism shaft (6) in shell (1), described
Moving contact (4) be fixed in the mechanism shaft (6) and limit shaft (7) of shell (1) by tension spring (13).
3. the operating mechanism of miniature circuit breaker according to claim 2, it is characterised in that: the moving contact (4) passes through
The arc-shaped slot (41) of strip thereon is rotatably installed on mechanism shaft (6), the arc-shaped slot (41) of the moving contact (4)
Installation cooperation between mechanism shaft (6) is included in the state of moving contact (4) and static contact (10) closure between the excess of stroke
Gap (h).
4. the operating mechanism of miniature circuit breaker according to claim 2, it is characterised in that: set on the moving contact (4)
It is equipped with arc-shaped slot (41), driving groove (42), pivot hole (43), limiting slot (44), carbine (45) and movable contact (40), it is described
Mechanism shaft (6) on arc-shaped slot (41) and shell (1), which is installed, to be cooperated；Limit on the limiting slot (44) and shell (1)
Position axis (7) is engaged；The driving end (32) of driving groove (42) and the kinematic link (3) on the moving contact (4)
Transmission cooperates, and the pivot hole (43) on the moving contact (4) couples with pivot (52) installation on the tripping lever (5).
5. the operating mechanism of miniature circuit breaker according to claim 4, it is characterised in that: set on the moving contact (4)
It is equipped with arc-shaped slot (41) and pivot hole (43), one end is equipped with the driving groove (42) of spill, and the other end is equipped with movable contact (40), spring
Hook (45) and limiting slot (44) are located at the two sides of moving contact (4), and carbine (45) is located at arc-shaped slot (41) and driving groove
(42) between, limiting slot (44) is located between arc-shaped slot (41) and moving contact (4), and pivot hole (43) is located at limiting slot (44) and arc
Between shape slot (41), arc-shaped slot (41) is located on moving contact (4) close to carbine (45) side, and pivot hole (43) is located at dynamic touching
Close to limiting slot (44) side on head (4).
6. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that: the one of the moving contact (4)
End is equipped with the driving groove (42) with the transmission cooperation of the driving end (32) of kinematic link (3), and the tripping lever (5) is pivotally mounted
On moving contact (4), tripping driving section (53) is provided in tripping lever (5) and for realizing kinematic link (3) and moving contact
(4) lock face (51) of lock fit and unlock cooperation between.
7. the operating mechanism of miniature circuit breaker according to claim 6, it is characterised in that: the lock fit is to make to take off
Lock face (51) on button lever (5) is abutted with the driving end (32) of kinematic link (3), and the driving end (32) is locked
It is scheduled on the driving groove (42) on moving contact (4) Nei, the driving end (32) of kinematic link (3) and the lock face of tripping lever (5)
(51) collective effect is generated in the latching force of driving groove (42)；The unlock cooperation is the lock face for making to thread off on lever (5)
(51) it is separated with the driving end (32) of kinematic link (3), and makes the driving end (32) can be in the driving groove on moving contact (4)
(42) sliding in.
8. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that: the tripping lever (5) is also
It is provided with the resetting apparatus that driving tripping lever (5) is rotated around its pivot (52), the reset rotation of tripping lever (5) drives tripping
Lock face (51) on lever (5) is abutted with the driving end (32) of kinematic link (3), which locks the driving end (32)
It is scheduled on the driving groove (42) on moving contact (4) Nei, to realize that the locking between the kinematic link (3) and moving contact (4) is matched
It closes.
9. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that: on the tripping lever (5)
Tripping driving section (53) by the trip gear of miniature circuit breaker driving around its pivot (52) rotate, drive tripping lever (5)
Lock face (51) separated with the driving end (32) of kinematic link (3), which makes the driving end (32) can be in moving contact
(4) sliding in the driving groove (42) on, to realize the unlock cooperation between the kinematic link (3) and moving contact (4).
10. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that: the kinematic link (3)
The extended line of line between both ends (31,32) is stablized under moving contact (4) and static contact (10) closed state in handle (2)
The lower section of center of rotation 0；Extended line between the both ends (31,32) of the kinematic link (3) is in moving contact (4) and static contact
(10) stablize under disjunction state in the top of the center of rotation 0 of handle (2)；The both ends (31,32) of the kinematic link (3) it
Between extended line the top of center of rotation 0 is transferred to from the lower section of the center of rotation 0 of handle (2) during tripping.
11. the operating mechanism of miniature circuit breaker according to claim 3, it is characterised in that: in moving contact (4) and static contact
(10) in the state of being closed, the active force on moving contact (4) includes that the pulling force of tension spring (13), static contact (10) act on moving contact
(4) lock face (51) of the contact pressure of movable contact (40), the driving end (32) of kinematic link (3) and tripping lever (5) is altogether
Same-action is in the latching force of the driving groove (42) of moving contact (4), and the resultant force and tension spring of the contact pressure and latching force
(13) tension balanced；In the state of moving contact (4) and static contact (10) disjunction, the active force on moving contact (4) includes drawing
Mechanism shaft (6) on the pulling force of spring (13), shell (1) acts on the restraining force of arc-shaped slot (41), the limit on shell (1)
Axis (7) acts on the contact force of the limiting slot (44) of moving contact (4), the resultant force of the pulling force of the contact force and tension spring (13) with
Mechanism shaft (6) acts on the constraint dynamic balance of arc-shaped slot (41).
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012560.8A CN106960768B (en) | 2016-01-11 | 2016-01-11 | The operating mechanism of miniature circuit breaker |
| RU2018129468A RU2716012C2 (en) | 2016-01-11 | 2016-10-24 | Miniature circuit breaker operating mechanism |
| BR112018014124-0A BR112018014124B1 (en) | 2016-01-11 | 2016-10-24 | MINIATURE CIRCUIT BREAKER OPERATING MECHANISM |
| EP16884716.8A EP3404691B1 (en) | 2016-01-11 | 2016-10-24 | Operation mechanism for miniature circuit breaker |
| PCT/CN2016/103018 WO2017121164A1 (en) | 2016-01-11 | 2016-10-24 | Operation mechanism for miniature circuit breaker |
| MYPI2018702826A MY191683A (en) | 2016-01-11 | 2016-10-24 | Operating mechanism of miniature circuit breaker |
| PH12018501494A PH12018501494A1 (en) | 2016-01-11 | 2018-07-11 | Operation mechanism for miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012560.8A CN106960768B (en) | 2016-01-11 | 2016-01-11 | The operating mechanism of miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106960768A CN106960768A (en) | 2017-07-18 |
| CN106960768B true CN106960768B (en) | 2019-10-11 |
Family
ID=59310777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610012560.8A Active CN106960768B (en) | 2016-01-11 | 2016-01-11 | The operating mechanism of miniature circuit breaker |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3404691B1 (en) |
| CN (1) | CN106960768B (en) |
| MY (1) | MY191683A (en) |
| PH (1) | PH12018501494A1 (en) |
| RU (1) | RU2716012C2 (en) |
| WO (1) | WO2017121164A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108807096A (en) * | 2018-07-11 | 2018-11-13 | 浙江诺科电气科技股份有限公司 | The operating mechanism of miniature circuit breaker |
| CN108878209A (en) * | 2018-09-03 | 2018-11-23 | 厦门大恒科技有限公司 | A kind of miniature circuit breaker of internally provided with vacuum contact head mechanism |
| CN109509647A (en) * | 2019-01-17 | 2019-03-22 | 乐清东海电器有限公司 | A kind of operating mechanism and its switching device |
| CN110459414A (en) * | 2019-05-09 | 2019-11-15 | 厦门宏发汽车电子有限公司 | A kind of the contact control mechanism and switch of active homing |
| CN112490089A (en) * | 2020-12-25 | 2021-03-12 | 浙江奥来电器有限公司 | Locking device of circuit breaker |
| CN113119089B (en) * | 2021-04-20 | 2023-04-28 | 上海联影医疗科技股份有限公司 | Mechanical arm locking mechanism for moving DR |
| CN113745068B (en) * | 2021-08-05 | 2023-11-24 | 杭州泰姆电气有限公司 | Operating mechanism of circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19507605C1 (en) * | 1995-03-04 | 1996-08-22 | Abb Patent Gmbh | Snap-action latching mechanism for electrical switch |
| CN104241038A (en) * | 2014-08-28 | 2014-12-24 | 三信国际电器上海有限公司 | Operating mechanism of miniature circuit breaker |
| CN205487987U (en) * | 2016-01-11 | 2016-08-17 | 浙江正泰电器股份有限公司 | Operation mechanism of small breaker |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4116454A1 (en) * | 1991-05-18 | 1992-11-19 | Licentia Gmbh | MECHANISM FOR A SELF-SWITCH |
| JPH0636668A (en) * | 1992-07-14 | 1994-02-10 | Fuji Electric Co Ltd | Remote control circuit breaker |
| JPH06176678A (en) * | 1992-10-06 | 1994-06-24 | Fuji Electric Co Ltd | Remote-controlled circuit breaker |
| CN101677049B (en) * | 2008-09-19 | 2011-12-28 | 郑春开 | Improved circuit breaker |
| CN103346046A (en) * | 2013-06-05 | 2013-10-09 | 温州大观电气有限公司 | Switch trip device |
| CN203434106U (en) * | 2013-09-16 | 2014-02-12 | 乐清市胜宇电气有限公司 | Releasing operating mechanism of breaker |
-
2016
- 2016-01-11 CN CN201610012560.8A patent/CN106960768B/en active Active
- 2016-10-24 MY MYPI2018702826A patent/MY191683A/en unknown
- 2016-10-24 RU RU2018129468A patent/RU2716012C2/en active
- 2016-10-24 EP EP16884716.8A patent/EP3404691B1/en active Active
- 2016-10-24 WO PCT/CN2016/103018 patent/WO2017121164A1/en active Application Filing
-
2018
- 2018-07-11 PH PH12018501494A patent/PH12018501494A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19507605C1 (en) * | 1995-03-04 | 1996-08-22 | Abb Patent Gmbh | Snap-action latching mechanism for electrical switch |
| CN104241038A (en) * | 2014-08-28 | 2014-12-24 | 三信国际电器上海有限公司 | Operating mechanism of miniature circuit breaker |
| CN205487987U (en) * | 2016-01-11 | 2016-08-17 | 浙江正泰电器股份有限公司 | Operation mechanism of small breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2018129468A (en) | 2020-02-13 |
| RU2018129468A3 (en) | 2020-02-13 |
| BR112018014124A2 (en) | 2018-12-11 |
| EP3404691A1 (en) | 2018-11-21 |
| PH12018501494A1 (en) | 2019-03-25 |
| EP3404691A4 (en) | 2019-08-28 |
| RU2716012C2 (en) | 2020-03-05 |
| EP3404691B1 (en) | 2021-01-27 |
| WO2017121164A1 (en) | 2017-07-20 |
| CN106960768A (en) | 2017-07-18 |
| MY191683A (en) | 2022-07-07 |
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Application publication date: 20170718 Assignee: NOARK ELECTRICS (SHANGHAI) Co.,Ltd. Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000028 Denomination of invention: Operating mechanism of miniature circuit breaker Granted publication date: 20191011 License type: Common License Record date: 20200430 |