CN106960768A - The operating mechanism of miniature circuit breaker - Google Patents
The operating mechanism of miniature circuit breaker Download PDFInfo
- Publication number
- CN106960768A CN106960768A CN201610012560.8A CN201610012560A CN106960768A CN 106960768 A CN106960768 A CN 106960768A CN 201610012560 A CN201610012560 A CN 201610012560A CN 106960768 A CN106960768 A CN 106960768A
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- China
- Prior art keywords
- moving contact
- contact
- kinematic link
- driving
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- 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, also including extension spring and dropout lever, one end of kinematic link couples with handle hinge, the other end coordinates with moving contact, and one end of the extension spring is fixed on shell, and the other end is connected with moving contact；Described moving contact is driven jointly by extension spring and kinematic link, contact and excess of stroke elastic force needed for ensureing electrical contact reliability is provided for the closure of moving contact and static contact, also, described extension spring is the energy storage elastic force needed for the disjunction of driving moving contact and static contact is provided for reset；Dropout lever is arranged on described moving contact, and for controlling locking and unblock between kinematic link and moving contact to coordinate, dropout lever kinematic link is separated with moving contact when failure occurs so that operating mechanism is threaded off automatically.The mechanism can effectively simplify structure, reduction manufacturing cost, improve production efficiency and optimization mechanism performance.
Description
Technical field
The present invention relates to the operating mechanism of miniature circuit breaker, low-voltage moulded case modularization is particularly suitable for small-sized
The operating mechanism of breaker, belongs to Low Voltage Electrical Apparatus.
Background technology
It is well known that the operating mechanism of miniature circuit breaker is used for the disjunction/closure for driving moving contact and static contact,
And by the disjunction/closure, control combined floodgate, separating brake and the tripping operation of breaker.Quadric chain is existing
The most frequently used mechanism of the operating mechanism most typically of miniature circuit breaker, including a hand being connected with kinematic link
Handle, constitutes a toggle；One moving contact supports device, is installed in rotation on one piece on pivot
Rotor plate；And a mechanical chain (also commonly referred to as locking) that can be disconnected by the action of trip(ping) bar, it is double
Sheet metal is connected on trip(ping) bar by a pivot link with single-direction transmission.Above-mentioned mechanical chain is
By trip(ping) bar a stop catch and be rotatably mounted on the heart axle of plate a lock bolt (also commonly referred to as thick stick
Bar) composition is engaged, connecting rod is directly connected on lock bolt, this to have assemblied a deceleration transmission level,
Can reduce operating mechanism tripping force.This one feature of mechanism is moving contact supports it is two only with contact
Vertical element, in order to obtain necessary excess of stroke function, it is necessary to set super between moving contact and contact are supported
Journey mechanism, therefore, the connection between the rotor plate that moving contact and contact are supported typically uses two ways, one
Kind be with gluing knot or weld together, have the disadvantage complex procedures, and firmness is unreliable, it is another be by
Moving contact is fixed on contact by button spring and supported, is not fixed in the rotary shaft of operating mechanism, has the disadvantage
Contact turning arm is caused to lengthen, mechanism action slows, and is unfavorable for product opening performance.Moreover, four connect
Contact in linkage is supported to be fixed together with a swivel plate generally by a spring, and contact
Support can be rotated with swivel plate with small range, ensure the contact pressure and the excess of stroke of product with this, it is seen then that existing
It is zero the problem of moving contact is existed jointly by way of welding or spring are fixed in contact support to have
Number of packages is more, driving-chain complex structure, and assembling and setting is complicated, and efficiency of assembling is further reduced, so as to influence
Breaker is minimized and low cost.In addition, mechanical chain in the operating mechanism of existing miniature circuit breaker
Structure is set up on the driving-chain between lock bolt and trip(ping) bar, and generally using pointed tooth engagement (generally also referred to as
For hasp etc.), the defect of the structure of this pointed tooth engagement is that pointed tooth is easy to wear, so as to influence product
Reliability and service life.
With miniaturization and the continuous improvement of multi-functional use requirement, to the operating mechanism of miniature circuit breaker
The demand for improving new technology is increasingly urgent, and its technological improvement direction may be summarized to be miniaturization, low cost and bag
Include the performance optimization including reliability, service life, and with the common technology cores of these directional correlations be
While simplifying structure, reduce part, the restriction of the weak environment of influence performance can be overcome.
The content of the invention
The present invention is to solve the above mentioned problem that prior art is present, it is desirable to provide a kind of miniature circuit breaker
Operating mechanism, while simplifying structure, reducing amount of parts, can further improve breaker operator machine
The reliability of structure, the convenience of assembling and setting and production efficiency.
To achieve the above object, present invention employs following technical scheme：
A kind of operating mechanism of miniature circuit breaker, including be pivoted on shell 1 handle 2, transmission connect
Bar 3 and the static contact 10 and moving contact 4 being arranged in shell 1, also including extension spring 13 and dropout lever
5, one end and the hinge-coupled of handle 2 of described kinematic link 3, the other end coordinate with moving contact 4, institute
The one end for stating extension spring 13 is fixed on shell 1, and the other end is connected with moving contact 4；Described moving contact 4
Driven jointly by described extension spring 13 and kinematic link 3, the closure for moving contact 4 and static contact 10 is provided
Ensure the contact and excess of stroke elastic force needed for electrical contact reliability, also, described extension spring 13 is driving
The disjunction of moving contact 4 and static contact 10 is provided for the energy storage elastic force needed for reset；Dropout lever 5
It is arranged on described moving contact 4, for controlling locking and unblock between kinematic link 3 and moving contact 4
Coordinate, described dropout lever 5 described kinematic link 3 is separated with moving contact 4 when failure occurs with
Operating mechanism is set to thread off automatically.
It is preferred that, mechanism rotating shaft 6 and limit shaft 7, the described pivot of moving contact 4 are provided with described shell 1
Turn in the mechanism rotating shaft 6 in shell 1, described moving contact 4 is fixed on shell 1 by extension spring 13
Mechanism rotating shaft 6 and limit shaft 7 on.
It is preferred that, described moving contact 4 is rotatably installed in mechanism by the arc-shaped slot 41 of strip thereon
In rotating shaft 6, the installation between the arc-shaped slot 41 of described moving contact 4 and mechanism rotating shaft 6 coordinates and included
There is excess of stroke gap h in the state of moving contact 4 and static contact 10 are closed.
It is preferred that, arc-shaped slot 41, driving groove 42, pivot hole 43, limit are provided with described moving contact 4
Position groove 44, carbine 45 and movable contact 40, described arc-shaped slot 41 and the mechanism rotating shaft 6 on shell 1
Install and coordinate；Described stopper slot 44 is engaged with the limit shaft 7 on shell 1；Described moving contact 4
On the transmission of driving end 32 of driving groove 42 and described kinematic link 3 coordinate, on described moving contact 4
Pivot hole 43 with described dropout lever 5 pivot 52 install couple.
It is preferred that, arc-shaped slot 41 and pivot hole 43 are provided with described moving contact 4, one end is provided with spill
Driving groove 42, the other end is provided with movable contact 40, and carbine 45 and stopper slot 44 are located at moving contact 4 respectively
Both sides, between the position arc-shaped slot 41 of carbine 45 and driving groove 42, stopper slot 44 be located at deep-slotted chip breaker
Between hole 41 and moving contact 4, pivot hole 43 is located between stopper slot 44 and arc-shaped slot 41, arc-shaped slot
41 are located on moving contact 4 close to the side of carbine 45, and pivot hole 43 is located on moving contact 4 close to stopper slot
44 sides.
It is preferred that, the transmission of driving end 32 that one end of described moving contact 4 is provided with kinematic link 3 coordinates
Driving groove 42, described dropout lever 5 be pivoted on moving contact 4, dropout lever 5 be provided with it is de-
Detain driving section 53 and for realizing the lock fit between kinematic link 3 and moving contact 4 and unlocking what is coordinated
Lock face 51.
It is preferred that, described lock fit is to make the lock face 51 and kinematic link 3 on dropout lever 5
Driving end 32 is abutted, and described driving end 32 is locked in the driving groove 42 on moving contact 4,
The driving end 32 of kinematic link 3 and the lock face 51 of dropout lever 5 produce collective effect in driving groove 42
Latching force；It is to make the biography of the lock face 51 on dropout lever 5 and kinematic link 3 that described unblock, which coordinates,
Moved end 32 is separated, and makes to slide in the driving groove 42 that described driving end 32 can be on moving contact 4.
It is preferred that, described dropout lever 5 is additionally provided with what driving dropout lever 5 was rotated around its pivot 52
Resetting means, the reset of dropout lever 5 rotates the lock face 51 and kinematic link 3 driven on dropout lever 5
Driving end 32 abut, described driving end 32 is locked in the driving groove 42 on moving contact 4 by the abutting
It is interior, to realize the lock fit between described kinematic link 3 and moving contact 4.
It is preferred that, the trip gear of dropout driving section 53 on described dropout lever 5 by miniature circuit breaker
Driving rotated around its pivot 52, drive the lock face 51 of dropout lever 5 and the driving end of kinematic link 3
32 separation, the separation makes to slide in the driving groove 42 that described driving end 32 can be on moving contact 4, with reality
Unblock between existing described kinematic link 3 and moving contact 4 coordinates.
It is preferred that, the extended line of the line between the two ends 31,32 of described kinematic link 3 is in moving contact 4
With the lower section of the stable center of rotation 0 in handle 2 under the closure state of static contact 10；Described kinematic link 3
Two ends 31,32 between extended line it is stable in handle 2 under moving contact 4 and the disjunction state of static contact 10
Center of rotation 0 top；Extended line between the two ends 31,32 of described kinematic link 3 is in tripping operation
During the top of center of rotation 0 is transferred to from the lower section of the center of rotation 0 of handle 2.
It is preferred that, in the state of moving contact 4 and static contact 10 are closed, the active force bag on moving contact 4
Include the pulling force of extension spring 13, static contact 10 act on moving contact 4 movable contact 40 contact, transmission
The driving end 32 of connecting rod 3 and the collective effect of lock face 51 of dropout lever 5 are in the driving groove 42 of moving contact 4
Latching force, and the tension balanced made a concerted effort with extension spring 13 of described contact and latching force；Dynamic
In the state of contact 4 and the disjunction of static contact 10, the active force on moving contact 4 include extension spring 13 pulling force,
Mechanism rotating shaft 6 on shell 1 acts on the restraining force of arc-shaped slot 41, the limit shaft 7 on shell 1 and made
For the contact force of the stopper slot 44 of moving contact 4, described contact force and the pulling force of extension spring 13 make a concerted effort with
Mechanism rotating shaft 6 acts on the constraint dynamic balance of arc-shaped slot 41.
The operating mechanism of the miniature circuit breaker of the present invention realizes that closure/disjunction is changed by using three-link mechanism
Structure, eliminates welding or spring Joining Technology between moving contact and contact support, reduces amount of parts,
Effectively simplify structure, reduction manufacturing cost.Moreover, by using three-link mechanism and new power architecture,
The optimizing design scheme of latch-up structure, excess of stroke structure, closure/disjunction transformational structure, operating mechanism in the same old way can
Excess of stroke function needed for providing, and can also effectively simplify structure, reduction manufacturing cost, improve production efficiency
With optimization mechanism performance.
Brief description of the drawings
Advantages and features of the invention can be seen more clearly from the description of accompanying drawing illustrated embodiment, wherein：
Fig. 1 is the miniature circuit breaker of the invention that moving contact 4 is in stable disjunction state with static contact 10
Operating mechanism integrally-built floor map.
Fig. 2 be moving contact 4 from disjunction state operated to closure state during a momentary status sheet
The integrally-built floor map of the operating mechanism of the miniature circuit breaker of invention.
Fig. 3 is the miniature circuit breaker of the invention that moving contact 4 is in stable closure state with static contact 10
Operating mechanism integrally-built floor map.
Fig. 4 is the schematic perspective view of the moving contact 4 in the operating mechanism shown in Fig. 1.
Embodiment
The embodiment provided below in conjunction with accompanying drawing 1 to 4, further illustrates the behaviour of the miniature circuit breaker of the present invention
Make the embodiment of mechanism.
In the embodiment shown in Fig. 1-3, the operating mechanism of miniature circuit breaker of the invention include shell 1,
Static contact 10 (stationary contact is shown schematically in figure), the handle 2 being pivoted on shell 1 and hand
The kinematic link 3 of the hinge-coupled of handle 2,.The operating mechanism of the present invention also includes extension spring 13, by kinematic link
3 and the moving contact 4 that drives jointly of extension spring 13, and for controlling to lock between kinematic link 3 and moving contact 4
The dropout lever 5 that fixed and unblock coordinates.One end 31 of kinematic link 3 and the hinge-coupled of handle 2, the other end
Driving end 32 coordinate with moving contact 4；One end of the extension spring 13 is fixed on shell 1, the other end with
Described moving contact 4 is connected, and makes described moving contact 4 common by described extension spring 13 and kinematic link 3
Driving, the contact needed for ensureing electrical contact reliability is provided for the closure of moving contact 4 and static contact 10
With excess of stroke elastic force, also, described extension spring 13 provides use for the disjunction of driving moving contact 4 and static contact 10
In the energy storage elastic force needed for reset；Described dropout lever 5 is arranged on described moving contact 4, is used
Locking and unblock between control kinematic link 3 and moving contact 4 coordinate, and described dropout lever is in failure
Described kinematic link 3 is set to be separated with moving contact 4 during generation, so that described operating mechanism is threaded off automatically,
And it is unrelated with operation handle 2.
As in the embodiment disclosed in figs. 1-3, three are provided with the shell 1 of breaker and are attached separately to the shell
Axle in 1, their axle, mechanism rotating shaft 6 and limit shafts namely for one end of extension spring 13 described in fixation
7, described moving contact 4 is pivoted in the mechanism rotating shaft 6 in shell 1, described moving contact 4 by
Extension spring 13 is fixed in the mechanism rotating shaft 6 and limit shaft 7 of shell 1, extension spring 13 and the difference of limit shaft 7 position
In the both sides of moving contact 4, limit shaft 7 limits the slewing area of moving contact 4.
As shown in figure 4, being provided with arc-shaped slot 41, driving groove 42, pivot hole on the moving contact 4 of the present invention
43rd, stopper slot 44, carbine 45 and movable contact 40, described arc-shaped slot 41 and described shell 1
On mechanism rotating shaft 6 install coordinate；Described stopper slot 44 connects with the limit shaft 7 on described shell 1
Touch and coordinate；The driving end 32 of driving groove 42 and described kinematic link 3 on described moving contact 4 is driven
Coordinate, the pivot hole 43 on described moving contact 4 is installed with the pivot 52 on described dropout lever 5 to be coupled.
One end of the extension spring 13 couples with shell 1, the other end and the carbine 45 on moving contact 4 of extension spring 13
Connection, makes moving contact 4 be fixed on by extension spring 13 in the rotary shaft 6 and limit shaft 7 of shell 1, also,
Extension spring 13 provides the contact needed for dynamic and static contact, reaches the reliability of electrical contact.Kinematic link 3
It can be slided in the driving groove 42 of the spill of moving contact 4 and promote moving contact 4 to rotate, the moving contact can
Rotated around the mechanism rotating shaft 6 and reach dynamic/static contact contact position, due to moving contact 4 when operating mechanism is detained again
Stress point change, moving contact 4 is separated with mechanism rotating shaft 6.Of the invention one as shown in Figure 4
Arc-shaped slot 41 and pivot hole 43 are provided with individual particular preferred embodiment, described moving contact 4, one end is set
There is the driving groove 42 of spill, the other end is provided with movable contact 40, and carbine 45 and stopper slot 44 are located at respectively
The both sides of moving contact 4, between the position arc-shaped slot 41 of carbine 45 and driving groove 42, stopper slot 44
Between arc-shaped slot 41 and moving contact 4, pivot hole 43 is located between stopper slot 44 and arc-shaped slot 41,
Arc-shaped slot 41 is located on moving contact 4 close to the side of carbine 45, and pivot hole 43, which is located on moving contact 4, to be leaned on
The nearly side of stopper slot 44.
As can be seen here, a beneficial features of the operating mechanism of miniature circuit breaker of the invention are while including
Three organization plans different from prior art：Scheme one is employed by kinematic link 3, the and of moving contact 4
The three-link mechanism that dropout lever 5 is constituted, eliminates traditional latch lever；Scheme two is to employ one
The structure of moving contact 4, eliminates the flap of traditional contact support and is arranged on contact and support and moving contact
Between travel mechanism or coupling mechanism；Scheme three be employ one can and meanwhile provide energy storage elastic force, contact
The spring structure of pressure and excess of stroke elastic force, i.e.,：Still ensure that complete elastic energy accumulation, Elastic Contact and elasticity
The extension spring 13 of the function of the excess of stroke, eliminates traditional excess of stroke spring.The essence of the present invention, which is not only, changes behaviour
Make the whole structural scheme and operation principle of mechanism, and certainly will also change the concrete structure side of operating mechanism
Case, such as the power architecture of mechanism, latch-up structure, excess of stroke structure, closure/disjunction transformational structure.It is aobvious
So this design has the characteristics of simple in construction, number of components is few, so as to effectively reduction manufacturing cost, improves
Production efficiency, while can also be optimized the performance of mechanism.
The power architecture of the present invention relates generally to elastic force driving structure and the force system in equilibrium structure of core component.Bullet
Power driving structure can have a variety of specific implementations, and one kind that the present invention is used is preferably：Extension spring 13
It is not only that driving moving contact 4 provides energy storage elastic force with the disjunction of static contact 10, and extension spring 13 is also touched to be dynamic
First 4 provide contact and excess of stroke elastic force with the closure of static contact 10.In existing quadric chain,
Elastic force driving structure must use energy-stored spring and excess of stroke spring, two each have their own functions of spring, wherein storing up
Can spring to drive the disjunction of moving contact and static contact to provide energy storage elastic force (i.e. elastic energy accumulation), and excess of stroke bullet
Contact (i.e. Elastic Contact) and excess of stroke elastic force that spring provides for the closure of moving contact and static contact (i.e. bullet
Property the excess of stroke), lack a spring then therewith lack a function.The present invention can be achieved with described using an extension spring 13
Elastic energy accumulation, Elastic Contact and elastic three elastic force driving functions of the excess of stroke.The force system in equilibrium structure of the present invention
Can have a variety of specific implementations, the present invention using it is a kind of it is preferred by the way of include following two situations.The
A kind of situation is：(as shown in Figure 3), moving contact 4 in the state of moving contact 4 and static contact 10 are closed
On active force include the pulling force of the carbine 45 that acts on moving contact 4 of extension spring 13, static contact 10 and make
The driving end 32 and the lock face 51 of dropout lever 5 of contact, kinematic link 3 for movable contact 40
Collective effect is in the latching force (biography i.e. on the driving end 32 of kinematic link 3 and moving contact 4 of driving groove 42
Transmission between dynamic groove 42 coordinates the state in transmission power, necessary between driving end 32 and driving groove 42
In the presence of the driving force of interaction), also, described contact and latching force make a concerted effort and extension spring 13
Tension balanced.In the case of the first as shown in Figure 3：Mechanism rotating shaft 6 on shell 1 is to moving contact
The installation that arc-shaped slot 41 on 4 is not provided between restraining force, i.e. mechanism rotating shaft 6 and arc-shaped slot 41 is matched somebody with somebody
Close and be in released state；Limit shaft 7 on shell 1 does not provide contact to the stopper slot 44 on moving contact 4
Being engaged in released state between the limit shaft 7 in power, i.e. stopper slot 44 and shell 1.Second
Kind of situation is：(as shown in Figure 1), moving contact 4 in the state of moving contact 4 and the disjunction of static contact 10
On active force include extension spring 13 and act on the pulling force of the carbine 45 on moving contact 4, the machine on shell 1
Structure rotating shaft 6 acts on the restraining force of the arc-shaped slot 41 on moving contact 4, the limit shaft 7 on shell 1 and made
The contact force of stopper slot 44 on moving contact 4, described contact force and the pulling force of extension spring 13 are made a concerted effort
With the constraint dynamic balance of arc-shaped slot 41.In the case of as shown in Figure 1 second, kinematic link 3
Transmission between driving groove 42 on driving end 32 and moving contact 4 coordinates in the state for not transmitting power, most
The lock face 51 of pipe dropout lever 5 is in the lock state, but the driving end 32 and moving contact of kinematic link 3
The driving force of (being actually yet not present) interaction is not needed between driving groove 42 on 4.In moving contact
In the state of 4 close with static contact 10, the active force on moving contact 4 acts on carbine including extension spring 13
45 pulling force, static contact 10 act on the driving end 32 of the contact of movable contact 40, kinematic link 3
With the collective effect of lock face 51 of dropout lever 5 in the latching force of driving groove 42, and described contact pressure
The tension balanced made a concerted effort with extension spring 13 of power and latching force.And in moving contact 4 and the shape of the disjunction of static contact 10
Under state, active force on moving contact 4 acts on the pulling force of carbine 45, on shell 1 including extension spring 13
Mechanism rotating shaft 6 acts on the restraining force of arc-shaped slot 41, the limit shaft 7 on shell 1 and acts on stopper slot 44
Contact force, the constraint dynamic balance made a concerted effort with arc-shaped slot 41 of described contact force and the pulling force of extension spring 13.
It should be appreciated that arriving, force system in equilibrium structure is to ensure that mechanism for the operating mechanism of miniature circuit breaker
The key of operating characteristics and performance, power architecture of the invention is fairly simple and reasonable, and can avoid need not
Interference between the loss for the power wanted and power, to ensure what the reliable and stable and operating mechanism of dynamic balance was acted
It is rapid and sensitive.
Described latch-up structure can have a variety of specific implementations, the present invention using it is a kind of it is preferred by the way of
It is：Lock face 51, pivot 52 and dropout driving section 53, lock face are provided with described dropout lever 5
51 lock and unlocks the pivot hole on cooperation, pivot 52 and moving contact 4 with the driving end 32 of kinematic link 3
43 install connection.Locking and unblock cooperation between described kinematic link 3 and moving contact 4 include locking and matched somebody with somebody
Close and unblock coordinates, the transmission of driving end 32 that one end of described moving contact 4 is provided with kinematic link 3 is matched somebody with somebody
The driving groove 42 of conjunction, described dropout lever 5 is pivoted on moving contact 4, dropout lever 5 and is provided with
Dropout driving section 53 and for realizing that lock fit between kinematic link 3 and moving contact 4 and unblock coordinate
Lock face 51.Wherein, described lock fit causes the lock face 51 on dropout lever 5 to connect with transmission
The driving end 32 of bar 3 is abutted, and the driving end 32 of described kinematic link 3 is locked in into moving contact 4
Driving groove 42 in, the driving end 32 of kinematic link 3 and the lock face 51 of dropout lever 5 are produced jointly
Act on the latching force of driving groove 42；Described unblock, which coordinates, causes the biography of lock face 51 and kinematic link 3
Moved end 32 is separated, and the driving end 32 of described kinematic link 3 is slided in driving groove 42.It is aobvious
So, the advantage of this frame mode is that lock fit and unblock cooperation are built upon on dropout lever 5
Cooperation between the driving end 32 (rod-like structure) of lock face 51 and kinematic link 3, this cooperation is with passing
The pointed tooth engagement of system is compared, with obvious anti abrasive advantage, and can also provide larger latching force,
The reliability of locking can effectively be lifted.As Figure 1-3, one of dropout lever 5 of the invention is specifically excellent
Embodiment is selected, described dropout lever 5 includes the lock arm and transmission arm of connection, and lock arm end is provided with lock
Determine face 51, transmission arm is provided with dropout driving section 53, V-groove is formed between lock arm and transmission arm,
Lock arm is provided with the pivot 52 being rotatably assorted with moving contact 4, and dropout lever 5 is installed to by pivot 52
In the pivot hole 43 of moving contact 4, V-groove and the limit shaft 7 of dropout lever 5 are correspondingly arranged.
The specific latch-up structure matched with above-mentioned locking and unblock fit structure can have a variety of implement
Mode, the present invention using it is a kind of it is preferred by the way of include following two situations.The first situation is：Thread off
Lever 5 is additionally provided with resetting means (not shown), drives the dropout on dropout lever 5 to be driven with it
Portion 53 is rotated around its pivot 52, and the reset of dropout lever 5 rotates lock face 51 and the transmission driven thereon
The driving end 32 of connecting rod 3 is abutted, and the driving end 32 is locked in the driving groove 42 of moving contact 4,
That is the driving end 32 of lock face 51 and kinematic link 3 is in lock fit state.Described resetting means can
Using back-moving spring (not shown), its two ends couples with dropout lever 5 and moving contact 4 respectively.Also
Can be using the elastic angle apparatus (not shown) being arranged on dropout lever 5, the angle end of angular flexibility is with moving
Contact 4 or shell 1 set up friction and/or spacing connection.Second of situation be：The dropout of miniature circuit breaker
Dropout driving section 53 on device driving dropout lever 5 is rotated around its pivot 52, and the rotation drives thereon
Lock face 51 is separated with the driving end 32 of kinematic link 3, the driving end 32 is slided in driving groove 42
Dynamic, i.e., lock face 51 is in unblock mated condition with the driving end 32 of kinematic link 3.Under normal circumstances,
The trip gear of miniature circuit breaker includes two kinds of electrical apparatus releases, and one of which is magnetictrip, when being reached in circuit
During to electromagnetic trip condition, the striker 12 for being cased with push rod effect spring 11 thereon of magnetictrip is ejected,
Impinge upon on the dropout driving section 53 on dropout lever 5, to drive dropout lever 5 to be rotated around its pivot 52.
Another is thermal trip, when reaching hot dropout condition in circuit, (such as bimetal leaf of thermoinduction device 9
Device) bend and the dropout driving section 53 on the pulling dropout of drive rod 8 lever 5, to drive dropout lever 5
Rotated around its pivot 52.It is emphasized that：Described unblock, which coordinates simply to drive in trip gear, threads off
Occur when lever 5, simply occur in other words during the tripping operation of miniature circuit breaker, and in normal occlusion
Coordinate during lock and normal separating brake all without generation unblock.In normal "on" position (as shown in Figure 3) and
Under normal gate-dividing state (as shown in Figure 1), and in normal combined floodgate operating process (operation as shown in Figure 1
To the process shown in Fig. 3) and normal sub-switching operation process (operating as shown in Figure 3 to the process shown in Fig. 1)
In, because trip gear does not drive dropout lever 5, therefore dropout lever 5 is in lock fit state all the time,
Especially because the effect of resetting means, as long as trip gear removes the driving to dropout lever 5, dropout thick stick
Bar 5 is closed a floodgate and just so that it is guaranteed that normal no matter in what position, can all automatically reset to lock fit state
The reliability of normal separating brake.
Described excess of stroke structure can have a variety of specific implementations, the present invention using it is a kind of it is preferred by the way of such as
Shown in Fig. 3：Described moving contact 4 is rotatably installed in mechanism by the arc-shaped slot 41 of strip thereon and turned
On axle 6, in the state of moving contact 4 and static contact 10 are closed, the arc-shaped slot 41 of moving contact 4 with it is outer
There is excess of stroke gap h between mechanism rotating shaft 6 on shell 1, by the arc-shaped slot 41 of strip, and it is non-circular
Arc-shaped slot 41 realize excess of stroke gap.Described excess of stroke gap is by arc-shaped slot 41 and shell 1
Mechanism rotating shaft 6 installation cooperation structure realize, it is this install coordinate so that installed in mechanism rotating shaft 6
On arc-shaped slot 41 can be slidably matched with mechanism rotating shaft 6 so that in operation moving contact 4 and static contact 10
It can be formed during closure (disjunction state operation i.e. as shown in Figure 1 is the closure state shown in Fig. 3)
Excess of stroke gap h, the excess of stroke of known moving contact is compensated by excess of stroke gap h.Specific overshooting compensation is former
Reason is as follows：Under the disjunction state shown in Fig. 1, operation handle 2 moves in the direction of the clock, and passes through transmission
Connecting rod 3 promotes moving contact 5 to be moved in the direction of the clock around mechanism rotating shaft 6, and is contacted with static contact 10,
The momentary status shown in Fig. 2 is reached, in this case and before this state, moving contact 5 is with mechanism rotating shaft 6
It is 0 for the excess of stroke gap h between the mechanism rotating shaft 6 on fulcrum, i.e. arc-shaped slot 41 and shell 1.
When handle 2 is rotated further, the rotating fulcrum decorporation rotating shaft 6 of moving contact 5 is simultaneously transferred to static contact 10,
Now moving contact 4 is rotated by the center of circle of the contact point with static contact 10, moving contact 4 and the machine on shell 1
Structure rotating shaft 6 separates excess of stroke gap h, and normal close a floodgate is completed until reaching fully closed position as shown in Figure 3
Operation.Certainly, under the closure state shown in Fig. 3, reverse operation handle 2 just can be returned to shown in Fig. 1
Disjunction state, complete normal sub-switching operation, the position of each action piece is the inversion of aforesaid operations.
Described closure/disjunction transformational structure can have a variety of specific implementations, and it is a kind of excellent that the present invention is used
The mode of choosing is：Under moving contact 4 and the closure state of static contact 10, the two ends 31,32 of kinematic link 3
Between line extension line stabilization in the lower section (as shown in Figure 3) of the center of rotation 0 of handle 2, make behaviour
Make mechanism stable in "on" position；Under moving contact 4 and the disjunction state of static contact 10, the extension line stabilization
In the top (as shown in Figure 3) of the center of rotation 0 of handle 2, make operating mechanism stable in gate-dividing state；
During tripping operation, the extended line 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 operation, described extended line be transferred to from below top be by threading off
Caused by the unlocking motion of lever 5, i.e., when dropout lever 5 under the driving of trip gear around its pivot 52
During rotation, lock face 51 thereon separates with the driving end 32 of kinematic link 3 and can be in driving groove 42
Slide, the slip causes the driving end 32 of kinematic link 3 to move down, the movement cause the extended line around
One end 31 of kinematic link 3 is rotated clockwise, and is ultimately resulted in described extended line and is crossed flex point from below
(center of rotation 0 of handle 2) is transferred to top, and once described extended line crosses flex point, then draws
The elastic force of spring 13 just drives moving contact 4 to be rotated to disjunction direction (counter clockwise direction), until moving contact 4
Disjunction state in the stabilization shown in Fig. 1, namely complete trip operation.
Above content is to combine specific preferred embodiment further description made for the present invention, no
It can assert that the specific implementation of the present invention is confined to these explanations.For the common of the technical field of the invention
For technical staff, without departing from the inventive concept of the premise, some simple deductions can also be made or replaced
Change, should all be considered as belonging to protection scope of the present invention.
Claims (11)
1. a kind of operating mechanism of miniature circuit breaker, including be pivoted on shell (1) handle (2),
Kinematic link (3) and the static contact (10) and moving contact (4) being arranged in shell (1), it is special
Levy and be：Also include extension spring (13) and dropout lever (5), one end of described kinematic link (3) and
Handle (2) hinge-coupled, the other end coordinates with moving contact (4), and one end of the extension spring (13) is fixed
On shell (1), the other end is connected with moving contact (4)；Described moving contact (4) is by described drawing
Spring (13) and kinematic link (3) drive jointly, are that the closure of moving contact (4) and static contact (10) is carried
For ensureing contact and excess of stroke elastic force needed for electrical contact reliability, also, described extension spring (13) is
The disjunction of driving moving contact (4) and static contact (10) is provided for the energy storage elastic force needed for reset；
Dropout lever (5) is arranged on described moving contact (4), for controlling kinematic link (3) to be touched with dynamic
Locking and unblock between head (4) coordinate, and described dropout 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：Described
Mechanism rotating shaft (6) and limit shaft (7) are provided with shell (1), described moving contact (4) is pivotally mounted
In mechanism rotating shaft (6) in shell (1), described moving contact (4) is fixed on by extension spring (13)
In the mechanism rotating shaft (6) and limit shaft (7) of shell (1).
3. the operating mechanism of miniature circuit breaker according to claim 2, it is characterised in that：Described
Moving contact (4) is rotatably installed in mechanism rotating shaft (6) by the arc-shaped slot (41) of strip thereon,
Installation between the arc-shaped slot (41) of described moving contact (4) and mechanism rotating shaft (6), which coordinates, to be included in
Moving contact (4) in the state of static contact (10) closure with having excess of stroke gap h.
4. the operating mechanism of miniature circuit breaker according to claim 2, it is characterised in that：Described
Arc-shaped slot (41), driving groove (42), pivot hole (43), stopper slot are provided with moving contact (4)
(44), carbine (45) and movable contact (40), described arc-shaped slot (41) and shell (1)
On mechanism rotating shaft (6) install coordinate；Described stopper slot (44) and the limit shaft (7) on shell (1)
It is engaged；The biography of driving groove (42) and described kinematic link (3) on described moving contact (4)
Moved end (32) transmission coordinates, the pivot hole (43) on described moving contact (4) and described dropout lever
(5) pivot (52) on installs connection.
5. the operating mechanism of miniature circuit breaker according to claim 4, it is characterised in that：Described
Arc-shaped slot (41) and pivot hole (43) are provided with moving contact (4), one end is provided with the driving groove of spill
(42), the other end is provided with movable contact (40), and carbine (45) and stopper slot (44) are located at dynamic respectively
The both sides of contact (4), between carbine (45) position arc-shaped slot (41) and driving groove (42),
Stopper slot (44) is located between arc-shaped slot (41) and moving contact (4), and pivot hole (43) is located at spacing
Between groove (44) and arc-shaped slot (41), arc-shaped slot (41) is located on moving contact (4) close to bullet
Spring hook (45) side, pivot hole (43) is located on moving contact (4) close to stopper slot (44) side.
6. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that：Described
One end of moving contact (4) is provided with the driving groove (42) that driving end (32) transmission with kinematic link (3) coordinates,
Described dropout lever (5) is pivoted on moving contact (4), and dropout lever is provided with dropout on (5)
Driving section (53) and for realizing lock fit and unblock between kinematic link (3) and moving contact (4)
The lock face (51) of cooperation.
7. the operating mechanism of miniature circuit breaker according to claim 6, it is characterised in that：Described
Lock fit is to make the driving end (32) of the lock face (51) on dropout lever (5) and kinematic link (3)
Abut, and described driving end (32) be locked in the driving groove (42) on moving contact (4) Nei,
The driving end (32) of kinematic link (3) and the lock face (51) of dropout lever (5) produce collective effect
Latching force in driving groove (42)；It is to make the lock face (51) on dropout lever (5) that described unblock, which coordinates,
Separated with the driving end (32) of kinematic link (3), and make the described driving end (32) can be in moving contact
(4) slided in the driving groove (42) on.
8. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that：Described
Dropout lever (5) is additionally provided with the resetting means that driving dropout lever (5) is rotated around its pivot (52),
The reset of dropout lever (5) rotates the lock face (51) and kinematic link (3) driven on dropout lever (5)
Driving end (32) abut, described driving end (32) is locked on moving contact (4) by the abutting
In driving groove (42), to realize the lock fit between described kinematic link (3) and moving contact (4).
9. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that：Described
Dropout driving section (53) on dropout lever (5) by the trip gear of miniature circuit breaker driving around its pivot
Axle (52) is rotated, and drives the lock face (51) of dropout lever (5) and the driving end of kinematic link (3)
(32) separate, the separation makes the driving groove (42) that described driving end (32) can be on moving contact (4)
It is interior to slide, to realize the unblock cooperation between described kinematic link (3) and moving contact (4).
10. the operating mechanism of miniature circuit breaker according to claim 1, it is characterised in that：Described
The extended line of line between the two ends (31,32) of kinematic link (3) is in moving contact (4) and static contact
(10) stablize under closure state in the center of rotation O of handle (2) lower section；Described kinematic link (3)
Two ends (31,32) between extended line it is steady under moving contact (4) and static contact (10) disjunction state
It is scheduled on the center of rotation O of handle (2) top；The two ends (31,32) of described kinematic link (3)
Between extended line be transferred to center of rotation O below the center of rotation O of handle (2) during tripping operation
Top.
11. the operating mechanism of miniature circuit breaker according to claim 3, it is characterised in that：Touched dynamic
In the state of head (4) is closed with static contact (10), the active force on moving contact (4) includes extension spring (13)
Pulling force, static contact (10) act on moving contact (4) movable contact (40) contact, transmission
The driving end (32) of connecting rod (3) and lock face (51) collective effect of dropout lever (5) are in moving contact
(4) latching force of driving groove (42), and described contact and latching force make a concerted effort and extension spring
(13) tension balanced；In the state of moving contact (4) and static contact (10) disjunction, moving contact (4)
On the pulling force of active force including extension spring (13), the mechanism rotating shaft (6) on shell (1) act on arc
Limit shaft (7) in the restraining force of slotted eye (41), shell (1) acts on the spacing of moving contact (4)
The pulling force of the contact force of groove (44), described contact force and extension spring (13) make a concerted effort and mechanism rotating shaft (6)
Act 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 true CN106960768A (en) | 2017-07-18 |
| CN106960768B 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 |
| CN106960768B (en) | 2019-10-11 |
| EP3404691B1 (en) | 2021-01-27 |
| WO2017121164A1 (en) | 2017-07-20 |
| 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 |