CN102403169B - Switching mechanism for chopper - Google Patents
Switching mechanism for chopper Download PDFInfo
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- CN102403169B CN102403169B CN201010280216.XA CN201010280216A CN102403169B CN 102403169 B CN102403169 B CN 102403169B CN 201010280216 A CN201010280216 A CN 201010280216A CN 102403169 B CN102403169 B CN 102403169B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 51
- 230000000694 effects Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 230000008033 biological extinction Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
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Abstract
The invention discloses a kind of switching mechanism of chopper, including：Housing；It is rotatably arranged in the handle on housing；There is the bar of the one end being connected on handle；Fixed contact；Movable contact part, it includes movable contactor at one end, and is formed at the other end and the bar contact portion with another end in contact of bar；Rotary shaft, it is rotatably coupled with movable contact part；And main spring, it has the one end being connected on housing and is connected to the other end that movable contact is partly gone up, and produces the elastic force to movable contact part；It is characterized in that, the switching mechanism of chopper further includes：Breech lock, it includes the contact holding part being rotatably coupled to simultaneously support rotating axle in rotary shaft so that the other end of bar keeps contacting with bar contact portion；And connection spring, it is had the one end being connected on breech lock and the other end being coupled with movable contact part, has identical rotation direction with latch enable and movable contact part.
Description
Technical field
The present invention relates to a kind of switching mechanism of chopper, it includes housing, the handle being rotatably arranged in housing
And be connected to circuit power supply or load on fixed contact and movable contactor, and more specifically it relates to one kind such as
Under chopper switching mechanism：The quantity of wherein element reduces, and between movable contact terminal and fixing contact terminal
Distance increases, effectively thus improve opening performance and operability.
Background technology
Generally, small-size moulded case circuit breaker (MCCB) is that one kind is provided for by preventing load device and circuit due to electricity
Fault current in road (overload or short circuit) and damaged come protection circuit electric protection device.Especially, MCCB is intensive
Be arranged on device in little distribution board, so that a position (that is, the little distribution from shopping centre, office place, department store etc.
Disk) be conveniently switched on and cut off the electricity supply switch.In addition, MCCB is used to switch on or off the electricity of the device in lathe or equipment etc.
Source, and with high density, multiple MCCB can be arranged in distribution board.
Referring now to accompanying drawing, conventional small-sized MCCB is described.
Fig. 1 is the figure of disconnection (reset) state of the small-sized MCCB illustrating correlation technique.Generally, chopper includes：For
The housing of receiving element and be connected to housing top lid 8；Switching mechanism unit, it is formed at the inner side of housing and lid
And mechanically it is switched on and off circuit；Tripgear unit, it is used for detecting occurred abnormal current and fault current simultaneously
And so that circuit is tripped；And arc-control device unit, it is used for extinguishing the electric arc producing between contact point when circuit breaker trip.
Fig. 1 illustrates disconnection (reset) state of chopper, wherein movable contactor 5 and fixed contact 6 separately.
Switching mechanism unit includes：Handle 1, it is used for showing each state position；Bar (level) 2, it is used for determining and turns
Dynamic point；Breech lock 3, it is used for executing locking；Breech lock lid；Trip(ping) bar 4, it is used for disconnecting circuit；Main spring (not shown), it is used for
Tripping operation and disconnection；Tripping operation spring (not shown), it is operated by the tripping operation pressure between breech lock and trip(ping) bar；And reset
Spring (not shown), it is operated by the back pressure of handle.
The miniature circuit breaker of correlation technique is unfavorable in the following areas：The size of switching mechanism unit is big and complicated and go out
Arc unit is little.That is, the miniature circuit breaker of correlation technique includes：Breech lock, breech lock lid, trip(ping) bar, the activity of support movable contactor
Contact portion and for bring pressure to bear on three springs in their motion it is therefore desirable to the element of many and they not
Easily assemble.Further, since switching mechanism unit occupies relatively large space, therefore limit the chi of the arc-control device of chopper
Very little, thus reducing arc extinction performance.
And, there is the O/T angle of contact point between the movable contact part supporting movable contactor and breech lock lid, this makes
Must be difficult to increase the distance between movable contactor and fixed contact, therefore, it is difficult to improving the short-circuit capability of chopper.
Further, since the element of many and complicated structure and increased material cost and assembly cost.
Content of the invention
Therefore, for solving the above problems, various features as described herein are had contemplated that out.
A kind of scheme of the present invention provides a kind of switching mechanism of chopper, and it is reduced out by reducing number of elements
The size of shutting mechanism unit is such that it is able to make the size of arc-control device maximize, thus improves arc extinction performance.
Another kind of scheme of the present invention provides a kind of switching mechanism of chopper, and it can be by increasing movable contactor
Improve short-circuit capability with the distance between fixed contact.
Another kind of scheme of the present invention provides a kind of switching mechanism of chopper, and it passes through to make to simplify the structure and subtract
Lack number of elements and material cost and assembly cost can be reduced.
A kind of scheme according to the present invention, there is provided a kind of switching mechanism of chopper, it includes：Housing；Rotationally
It is arranged on the handle on housing；There is the bar of the one end being connected on handle；Fixed contact；Movable contact part, it includes
Movable contactor at one end, and be formed at the other end and the bar contact portion with another end in contact of bar；Rotary shaft,
It is rotatably coupled with movable contact part；And main spring, it has the one end being connected on housing and is connected to work
The other end in dynamic contact portion, and produce the elastic force to movable contact part it is characterised in that the switching mechanism of chopper
Further include：Breech lock, it include being rotatably coupled in rotary shaft and support rotating axle contact holding part so that
The other end obtaining bar keeps contacting with bar contact portion；And connection spring, its have the one end being connected on breech lock and with
The other end of movable contact part connection, has identical rotation direction with latch enable and movable contact part.
Movable contact part may include long rotary shaft receiving hole, and when rotary shaft is coupled in rotary shaft receiving hole
When, movable contact part can be moved along the longer side direction of elongated hole with respect to rotary shaft.
When fixed contact and movable contactor contact with each other, movable contact part can pass through the elastic force of main spring along length
Move with respect to rotary shaft in the longer side direction in hole, thus strengthening the contact pressure of fixed contact and movable contactor.
In switching mechanism, when handle rotates along the direction that circuit connects, there is the one end that may be connected on handle
Bar is contacted with bar contact portion, so that the pressurization of movable contact part is so that it rotates with respect to rotary shaft, breech lock passes through connection
Connect spring to rotate along the rotation direction identical direction with movable contact part, to allow to contact holding part keeps in bar and bar
Contact between contact portion, movable contactor can be contacted with fixed contact according to the rotation of movable contact part, and lives
Dynamic catalyst can be along the longer side direction of elongated hole with respect to rotary shaft according to the rotation of movable contactor and the elastic force of main spring
Motion, thus strengthen the contact pressure of fixed contact and movable contactor.
Meanwhile, when fixed contact and movable contactor separate, movable contact part can phase according to the elastic force of main spring
Rotary shaft is rotated to move along the longer side direction of elongated hole, thus increasing between fixed contact and movable contactor
Spacing.
Switching mechanism can further include：Be connected to the tripping mechanism on housing, and breech lock can further include can
The tripping operation contact portion contacting with tripping mechanism.Therefore, in the case of tripping operation, tripping operation contact portion can pass through tripping mechanism quilt
Pressurization is based on rotary shaft with latch enable and rotates, and movable contact part passes through to couple spring pivotal, and fixed contact and activity connect
Tentaculum separates according to the rotation of movable contact part, and movable contact part is longer along elongated hole by the elastic force of main spring
Move in side direction, to increase the spacing between fixed contact and movable contactor, and the other end of bar can be according to activity
The elastic force motion of the rotation of contact portion and main spring, so that the handle being connected on one end of bar is along the disconnection direction of circuit
Rotate.
In the switching mechanism of chopper, breech lock can be configured to dashes forward including the first connection that the one end coupling spring is coupled
Rise, and movable contact part can be configured to the second attachment tabs that the other end including connection spring is coupled.Here, activity
Contact portion can be configured to and further includes brake component, and this brake component is projected to be contacted with housing.
Bar contact portion can be configured to recessed to have stage portion, the other end of wherein bar is received to be kept.And
And, contact holding part may include contact jaw and is formed as the horizontal contact face extending from contact jaw.Contact jaw may include tiltedly
Domatic, and the other end of bar can be configured to contact and be maintained at horizontal contact face, slope and bar contact portion and connects
Tactile state.
It is detailed to the present invention that the above and other purpose of the present invention, feature, scheme and advantage are combined accompanying drawing below
Describe in detail bright in become readily apparent from.
Brief description
Fig. 1 is the sectional view of the chopper of correlation technique；
Fig. 2 be illustrate exemplary embodiment according to the present invention when circuit breaker trip the operation of chopper figure；
Fig. 3 is the figure of the normal operating of the chopper illustrating the exemplary embodiment according to the present invention；
Fig. 4 is the solid of the movable contact part of the switching mechanism of the chopper of the exemplary embodiment according to the present invention
Figure；
Fig. 5 is the axonometric chart of the breech lock of the switching mechanism of the chopper of the exemplary embodiment according to the present invention；
Fig. 6 is that the movable contact part of the switching mechanism when chopper illustrating the exemplary embodiment according to the present invention is jumped
The figure of operation during lock；And
Fig. 7 be the movable contact part of the switching mechanism of the chopper illustrating the exemplary embodiment according to the present invention just
The often figure of operation.
Specific embodiment
By combining accompanying drawing, the exemplary embodiment of the present invention is described now.
Fig. 2 be illustrate exemplary embodiment according to the present invention when circuit breaker trip the operation of chopper figure.Fig. 3
For illustrating the figure of the normal operating of the chopper of the exemplary embodiment according to the present invention.Fig. 4 is exemplary according to the present invention
The axonometric chart of the movable contact part of the switching mechanism of the chopper of embodiment.Fig. 5 is the exemplary embodiment according to the present invention
The breech lock of the switching mechanism of chopper axonometric chart.Fig. 6 be exemplary embodiment according to the present invention is shown work as chopper
Switching mechanism movable contact part tripping operation when operation figure.Fig. 7 is the exemplary embodiment illustrating according to the present invention
The figure of the normal operating of movable contact part of the switching mechanism of chopper.
For helping understand the present invention, now the open circuit of the miniature circuit breaker being shown in conjunction with according to exemplary embodiment (is opened
Road) state Fig. 2, the switching mechanism of the miniature circuit breaker of the exemplary embodiment according to the present invention is described.
As indicated, housing 100, handle are included according to the switching mechanism of the miniature circuit breaker of the exemplary embodiment of the present invention
200th, fixed contact 400, include the movable contact part 300 of movable contactor 310, bar 500, rotary shaft 600, breech lock 800,
Main spring 700 and connection spring 900.
Housing 100 receiving element and make element and the exterior insulation being received.Handle 200 provides a kind of hand switch little
The method of type chopper.That is, user can hold handle 200 with a firm grip switching on or off, thus miniature circuit breaker is placed in connection position
Put or open position, in circuit from power supply to load-side for the on-position connection to allow electric current flowing, disconnect in open position
Circuit from power supply to load-side is not to allow electric current flowing.
Handle 200 is rotatably arranged at housing.Allow the towards on position of handle 200 or the handss of open position operation
Handle control member (not shown) is arranged on the upper surface of housing 100.Handle 200 can in the range of handle control member direction
On-position or open position operation.When normal current flow, handle as shown in Figure 3 with respect to housing into rotation and position, and
And when abnormal current flowing therefore circuit breaker trip, handle is as shown in Figure 2 with respect to housing into rotation and position.
Bar 500 is the element to be made up of metal or synthetic resin in ' M ' form when observing from side.One end of bar 500
It is connected on handle 200, and bar 500 moves according to the rotation of handle.In this case, due to the other end and the work of bar
Dynamic contact portion is (to be described) to be contacted, and the position of therefore movable contact part changes according to the rotation of handle.That is, in such as Fig. 3
Under shown normal condition, the other end of bar moves along the dextrad of in figure, so that movable contactor is contacted with fixed contact.
Tripping operation in the case of, bar moves to the left side of in figure as shown in Figure 2 so that movable contact part widdershins rotate from
And movable contactor is separated with fixed contact.
The movable contactor 310 that movable contact part 300 includes being formed at its one end connects with the bar being formed at its other end
Contact portion divides 320, and the other end of bar 800 is contacted with bar contact portion 320.The details of movable contact part illustrates in the diagram.
For switching on or off circuit, movable contact part 300 can move to the position that it is contacted with fixed contact 500 or
Move to the position that it is separated with fixed contact 500.As shown in figure 4, movable contact be partly comprised in movable contact part with
Movable contactor 310 at the point of fixed contact contact.
Movable contactor 310 and fixed contact 400 are terminal to a certain extent, and it is connected to circuit (power circuit)
Mains side or load-side.When fixed contact 400 is electrically connected to the mains side of circuit, movable contactor 310 is electrically connected to
The load-side of circuit, and when the load-side of fixed contact 400 and circuit makes electrical contact with, movable contactor 310 and circuit
Mains side electrically connects.
Movable contact divides including long rotary shaft receiving hole 330.When rotary shaft 600 accesses in rotary shaft receiving hole 330,
Movable contact split-phase rotates for rotary shaft.In addition, as shown in figure 4, movable contact part can be along the longer side of receiving hole
Move with respect to rotary shaft in direction (A).When fixed contact 400 and movable contactor 310 contact with each other, movable contact part
300 move with respect to rotary shaft 600 along the longer side direction (A) of elongated hole according to the elastic force of main spring 700 (to be described).Cause
This, increased the contact pressure between fixed contact 400 and movable contactor 310.
Rotary shaft 600 can be fixedly coupled on housing or can be formed integrally with the shell, and is used as movable contact part
Rotary shaft with breech lock (to be described).
As shown in figure 5, movable contact part may include the bar contact portion 320 to have stage portion being formed as recessed,
The other end of bar can be received and remain at.Due to bar contact portion 320 recessed to have stage portion, therefore bar is another
One end portion of being recessed into accommodates, and due to the latched pressing (to be described) of the other end of bar, therefore, it is possible to limit the motion of breech lock.
Meanwhile, as shown in figure 4, the other end that movable contact part can be configured to including connection spring (to be described) is coupled
The second attachment tabs 340.This structure permission connection spring can be easily coupled to movable contact and partly go up.
And, as shown in figure 4, movable contact part can be configured to including brake component 350, brake component 350 project so as with
Housing contacts.By this structure, the operation of movable contact part can be limited in certain limit, thus preventing movable contact
Part produces damage because of excessive operation.
One end of main spring 700 the and other end is connected to housing and movable contact is partly gone up, to produce to movable contact
The elastic force dividing.In the present example embodiment, the one end of main spring has annular shape to be hooked by the protuberance of housing
And it is fixed on housing, and as shown in figure 4, the other end of main spring is by the rotary shaft receiving hole in movable contact part
The bending section being formed about hooks.Therefore, in the state of circuit disconnection, the top of movable contact part is pulled in order to relatively
Rotate in rotary shaft, so that fixed contact divides with movable contact partly separately, be held apart at, and increase spacing (waiting to retouch
State).
Meanwhile, in the state of circuit ON, pull the top of movable contact part, but this plays holding movable contact
Part and fixed contact divide the effect of the contact pressure of the state contacting with each other.This is by the operation based on this exemplary embodiment
It is further described in more detail.
Breech lock 800 is connected on the other end of bar 500, and rotates via the power being transmitted by bar.Show in Figure 5
Detail shape and the connection of breech lock 800 are gone out.
As shown in figure 5, breech lock 800 includes rotary shaft receiving hole 840, therefore it can be rotatably coupled to rotary shaft 600
On.In order to support, contact holding part 810 is formed at the upper end of breech lock so that the other end of bar keeps and bar contact portion
Contact.
Contact holding part 810 includes contact jaw 811 and is formed as the horizontal contact face 812 extending from contact jaw.Connect
Contravention includes the slope 813 at the boundary portion with horizontal contact face.The other end of bar and horizontal contact face 812, slope
813 contact with bar contact portion 320.Therefore, bar can not return immediately, but is partly fixed with steady by breech lock and movable contact
Surely keep the state of handle.
Meanwhile, breech lock includes coupling the first attachment tabs 830 that one end of spring is coupled.As shown in figure 5, attachment tabs
830 shapes having outwardly and bending.Connection spring is connected in attachment tabs 830.
Connection spring 900 is a kind of elastomeric spring, and it configures as follows：Its one end be connected on breech lock 800 and
The other end is connected in movable contact part 300 so that breech lock and movable contact part have identical rotation direction.As above institute
State, connection spring is connected in the second attachment tabs 340 of movable contact part.Therefore, movable contact part and breech lock due to
Couple spring and rotate in same direction, and be separately more than certain distance.
In fig. 2 it is shown that tripping mechanism 450.Tripping mechanism 450 is included by solenoid operated presser unit (not
Illustrate), to be used in tripping operation breech lock is pressurizeed.Tripping mechanism is universal component, therefore will omit its detailed description.
Breech lock 800 can be configured to and further includes the contact portion 820 that trips, and tripping operation contact portion 820 can be with tripping operation machine
Structure contacts.As shown in figure 5, board-like tripping operation contact portion outwardly is arranged on the lower end of breech lock from breech lock.By tripping operation
The presser unit of mechanism is pressurizeed to tripping operation contact portion, to make breech lock rotate thus causing movable contact part in tripping operation
Rotate and make bar move.
This structure obtains following effect：Due to breech lock pass through tripping mechanism directly pressurized, without if desired for
This trip(ping) bar in the chopper of the correlation technique of trip(ping) bar, therefore decreases the quantity of element.In addition, in this exemplary reality
Apply it is not necessary to provide the tripping operation spring of elastic force in the related between breech lock and trip(ping) bar in example, thus decrease element
Quantity.The equally big headroom of the trip(ping) bar that accordingly, there exist and omit (leeway) making arc-control device sufficiently large thus
Improve arc extinction performance.Further, since assembling is simplified, therefore, it is possible to improving work efficiency and can reducing unit cost.
Accompanying drawing will be combined now, by the operation of the exemplary embodiment of the present invention, the structure of the present invention will be carried out more detailed
Carefully describe.
In the present example embodiment, when handle 200 rotates along the direction connecting for circuit, its operating process is as follows
To reach state as shown in Figure 3.
When handle 200 rotates along the direction connecting for circuit, the bar 500 that one end is connected on handle is contacted with bar
Part 320 contacts, to pressurize to movable contact part 300, so that movable contact part 300 rotates with respect to rotary shaft 600.
Therefore, breech lock 800 passes through to couple spring 900 along the rotation direction identical direction rotation with movable contact part, with keeps in bar
Contact between 500 and bar contact portion 320.
Movable contactor is contacted with fixed contact according to the rotation of movable contact part, then according to movable contactor
Rotate and the elastic force of main spring moves with respect to rotary shaft along the longer side direction (A) of elongated hole, thus increasing fixed contact
Contact pressure and movable contactor between.
This is because the distance of the contact point motion of movable contactor and fixed contact is not so good as movable contactor and passes through master
The elastic force of spring is remote in the distance of the upper motion in the longer side direction (A) of elongated hole, therefore because movable contact part such as bends
Deng local deformation equally produce pressure, to strengthen contact pressure.
Meanwhile, in order to reach state as shown in Figure 2 so that tripping operation when short circuit, exemplary according to the present invention
Embodiment executes following operation.
Tripping operation in the case of, tripping operation contact portion pressurized by tripping mechanism so that breech lock is turned based on rotary shaft
Dynamic, and movable contact part passes through connection spring pivotal.Therefore, fixed contact and movable contactor are according to movable contact
Point rotation and separate, and movable contact part is moved along the longer side direction of elongated hole by the elastic force of main spring, increasing
Add the spacing between fixed contact and movable contactor.That is, when fixed contact and movable contactor separate, activity connects
Contact portion split-phase rotates for rotary shaft, is moved along the longer side direction of elongated hole with the elastic force that will pass through main spring, thus increasing
Spacing between fixed contact and movable contactor (B).
This is to be rotated so that longer along elongated hole with respect to rotary shaft due to the elastic force that movable contact part passes through main spring
Move in side direction, thus passing through movable contact part along the longer side direction (A) of elongated hole according to fulcrum and leverage
Move distance increases the spacing (B) between movable contactor and fixed contact.
Meanwhile, the other end of bar moves according to the elastic force of breech lock, the rotation of movable contact part and main spring, so that
The handle that one end of bar must be connected to rotates along the direction that circuit disconnects.
As described above, the exemplary embodiment of the present invention has advantages below.
That is, compared with the chopper of the correlation technique needing trip(ping) bar, in an exemplary embodiment of the present invention, door bolt
Lock is directly pressurized by tripping mechanism, has the effect reducing number of elements.Further, since the exemplary enforcement in the present invention
Do not need the tripping operation spring that elastic force is provided between breech lock and trip(ping) bar in the related in example, therefore have spring number
Amount is from three effects being reduced to two.The equally big headroom of the trip(ping) bar that accordingly, there exist and omit is so that arc-control device
Sufficiently large thus improving arc extinction performance.Further, since assembling is simplified, therefore, it is possible to improving operating efficiency and can reducing list
Position cost.
Further, since movable contactor is contacted with fixed contact according to the rotation of movable contact part, and according to
The rotation of movable contactor and the elastic force due to main spring, movable contactor is relative along the longer side direction (A) of elongated hole
In rotary shaft motion, there is the effect strengthening the contact pressure between fixed contact and movable contactor.
In addition, when fixed contact and movable contactor separately when, movable contact split-phase rotary shaft is rotated so that
Elastic force according to main spring moves along the longer side direction of elongated hole, therefore have increase fixed contact and movable contactor it
Between spacing (B) effect.
If due to the present invention can be embodied in dry form without departing from its feature it is also contemplated that, above-mentioned enforcement
Example is not limited by any details of aforementioned specification, unless otherwise stated, but should be broadly limited to as subsidiary
In the range of defined in claim, all of changes and improvements that are therefore intended to fall within the scope of the appended claims, or this boundary
Limit and scope equivalent also it is thus determined that being attached encompassed.
Claims (7)
1. a kind of switching mechanism of chopper, it includes：Housing；It is rotatably arranged in the handle on described housing；Have even
It is connected to the bar of the one end on described handle；Fixed contact；Movable contact part, it includes movable contactor at one end,
And be formed at the other end and the bar contact portion with another end in contact of described bar；Rotary shaft, it is with described movable contact
Part is rotatably coupled；And main spring, it has the one end being connected on described housing, and is connected to described activity and connects
The other end that contact portion is divided, and produce the elastic force to described movable contact part；
It is characterized in that,
The switching mechanism of described chopper further includes：
Breech lock, it includes the contact holding part being rotatably coupled to simultaneously support rotating axle in rotary shaft, so that described bar
The other end keep contact with described bar contact portion；And
Connection spring, it has the one end being connected on described breech lock and the other end coupling with described movable contact part,
To allow described breech lock and described movable contact part to have identical rotation direction；
Wherein, described movable contact divides including brake component, and described brake component is projected to be contacted with described housing,
Wherein, described bar contact portion recessed to have stage portion, the other end of described bar is accommodated in wherein to be kept,
Wherein said movable contact divides including long rotary shaft receiving hole, and when described rotary shaft is connected to described long rotary shaft
When in receiving hole, described movable contact part can be along the longer side direction of described long rotary shaft receiving hole with respect to described turn
Moving axis moves, and
Wherein said contact holding part includes contact jaw and is formed as the horizontal contact face extending from described contact jaw, described
Contact jaw includes slope, and the other end of described bar and described horizontal contact face, described slope and described bar contact site
Tap is touched and is maintained at contact condition.
2. a kind of switching mechanism of chopper, it includes：Housing；It is rotatably arranged in the handle on described housing；Have even
It is connected to the bar of the one end on described handle；Fixed contact；Movable contact part, it includes movable contactor at one end,
And be formed at the other end and the bar contact portion with another end in contact of described bar；Rotary shaft, it is with described movable contact
Part is rotatably coupled；Main spring, it has the one end being connected on described housing, and is connected to described movable contact
The other end on point, and produce the elastic force to described movable contact part；And it is connected to the tripping mechanism on described housing；
It is characterized in that,
The switching mechanism of described chopper further includes：
Breech lock, it includes the contact holding part being rotatably coupled to simultaneously support rotating axle in rotary shaft, so that described bar
The other end keep contact with described bar contact portion；And
Connection spring, it has the one end being connected on described breech lock and the other end coupling with described movable contact part,
To allow described breech lock and described movable contact part to have identical rotation direction；
Wherein, described movable contact divides including brake component, and described brake component is projected to be contacted with described housing,
Wherein, described bar contact portion recessed to have stage portion, the other end of described bar is accommodated in wherein to be kept,
Wherein said movable contact divides including long rotary shaft receiving hole, and when described rotary shaft is connected to described long rotary shaft
When in receiving hole, described movable contact part can be along the longer side direction of described long rotary shaft receiving hole with respect to described turn
Moving axis moves, and
Wherein said contact holding part includes contact jaw and is formed as the horizontal contact face extending from described contact jaw, described
Contact jaw includes slope, and the other end of described bar and described horizontal contact face, described slope and described bar contact site
Tap is touched and is maintained at contact condition.
3. switching mechanism according to claim 1 and 2, wherein when described fixed contact and described movable contactor each other
During contact, described movable contact part is by the elastic force of described main spring along longer side described in described long rotary shaft receiving hole
Move with respect to described rotary shaft in direction, thus strengthening described fixed contact and the contact pressure of described movable contactor.
4. switching mechanism according to claim 1 and 2, wherein when described fixed contact and described movable contactor separate
When, described movable contact part rotates with respect to described rotary shaft and along described long rotary shaft according to the elastic force of described main spring
The described longer side direction motion of receiving hole, thus between increasing between described fixed contact and described movable contactor
Away from.
5. switching mechanism according to claim 3, wherein when described handle rotates along the direction that circuit connects, has even
The bar of the one end being connected on described handle is contacted with described bar contact portion, with to described movable contact part pressurization so that
It rotates with respect to described rotary shaft, and described breech lock is by described connection spring along the rotation direction with described movable contact part
Identical direction rotates, to allow described contact holding part to keep the contact between described bar and described bar contact portion, institute
State movable contactor to be contacted with described fixed contact according to the rotation of described movable contact part, and described movable contact
Device according to described movable contactor rotate and described main spring elastic force along described long rotary shaft receiving hole described in longer by one
Move to respect to described rotary shaft in side, thus strengthening described fixed contact and the contact pressure of described movable contactor.
6. switching mechanism according to claim 2, wherein
Described breech lock further includes the tripping operation contact portion that can contact with described tripping mechanism, and
In the case of tripping operation, described tripping operation contact portion is pressurized to allow described breech lock to be based on institute by described tripping mechanism
State rotary shaft to rotate, by described connection spring pivotal, described fixed contact and described activity connect described movable contact part
Tentaculum separates according to the rotation of described movable contact part, and described movable contact part passes through the elastic force of described main spring
Move along longer side direction described in described long rotary shaft receiving hole to increase described fixed contact and described movable contact
Spacing between device, and
The other end of described bar is according to the elastic force motion rotating with described main spring of described movable contact part, so that connection
Described handle on one end of described bar rotates along the disconnection direction of circuit.
7. switching mechanism according to claim 1 and 2, one end that wherein said breech lock includes described connection spring is coupled
The first attachment tabs, and described movable contact divides the second connection that the other end including described connection spring is coupled prominent
Rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010280216.XA CN102403169B (en) | 2010-09-08 | 2010-09-08 | Switching mechanism for chopper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010280216.XA CN102403169B (en) | 2010-09-08 | 2010-09-08 | Switching mechanism for chopper |
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| Publication Number | Publication Date |
|---|---|
| CN102403169A CN102403169A (en) | 2012-04-04 |
| CN102403169B true CN102403169B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010280216.XA Active CN102403169B (en) | 2010-09-08 | 2010-09-08 | Switching mechanism for chopper |
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| CN (1) | CN102403169B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4641001A (en) * | 1984-06-15 | 1987-02-03 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| CN85106821A (en) * | 1985-07-25 | 1987-03-04 | 三菱电机株式会社 | Circuit breaker |
| US4743878A (en) * | 1985-05-01 | 1988-05-10 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| EP1096531A1 (en) * | 1999-10-26 | 2001-05-02 | Bticino S.P.A. | Operating mechanism of a moving contact for an automatic electrical circuit breaker |
| CN201238019Y (en) * | 2008-08-05 | 2009-05-13 | 无锡唯特电气技术有限公司 | Free-tripping actuating mechanism of miniature circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0824021B2 (en) * | 1988-06-08 | 1996-03-06 | 三菱電機株式会社 | Circuit breaker switching mechanism |
-
2010
- 2010-09-08 CN CN201010280216.XA patent/CN102403169B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4641001A (en) * | 1984-06-15 | 1987-02-03 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| US4743878A (en) * | 1985-05-01 | 1988-05-10 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| CN85106821A (en) * | 1985-07-25 | 1987-03-04 | 三菱电机株式会社 | Circuit breaker |
| EP1096531A1 (en) * | 1999-10-26 | 2001-05-02 | Bticino S.P.A. | Operating mechanism of a moving contact for an automatic electrical circuit breaker |
| CN201238019Y (en) * | 2008-08-05 | 2009-05-13 | 无锡唯特电气技术有限公司 | Free-tripping actuating mechanism of miniature circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102403169A (en) | 2012-04-04 |
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