CN102044384A - Switching mechanism for minitype plastic shell type circuit breaker - Google Patents
Switching mechanism for minitype plastic shell type circuit breaker Download PDFInfo
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- CN102044384A CN102044384A CN2009101788694A CN200910178869A CN102044384A CN 102044384 A CN102044384 A CN 102044384A CN 2009101788694 A CN2009101788694 A CN 2009101788694A CN 200910178869 A CN200910178869 A CN 200910178869A CN 102044384 A CN102044384 A CN 102044384A
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Abstract
The invention discloses a switching mechanism for a minitype plastic shell type circuit breaker, which can increase the disconnected interval. The switching mechanism comprises a handle, a mechanical power transmission rod, a latch, a fixed contactor, a movable contactor, a spring and a fixed axle, wherein the latch rotates under the action of the mechanical power transmitted by the power transmission rod; the fixed contactor is connected to an electric load of a power supply or circuit; the movable contactor can rotate to the position in contact with the fixed contactor or the position out of contact with the fixed contactor, so as to disconnect or close the circuit, and one end of the movable contactor is connected to the latch; the spring is used for providing elastic force for the movable contactor in the direction of the movable contactor in contact with the fixed contactor when the circuit is closed, and providing elastic force for the movable contactor in the direction of the movable contactor out of contact with the fixed contactor when the circuit is disconnected; and the fixed axle is used for providing a rotating pivot by contacting the outer surface of the movable contactor when the movable contactor rotates to close or disconnect the circuit.
Description
Technical field
The present invention relates to a kind of small-sized plastic-shell formula circuit breaker, relate in particular to a kind of switching mechanism that is used for small-sized plastic-shell formula circuit breaker.
Background technology
Small-sized plastic-shell formula circuit breaker is a kind of electric device, and it is used to disconnect and closed being used for such as in indoor, the building and the circuit of the small-sized electrical load of the apparatus in the factory etc., is not subjected to influence such as the abnormal current of overload and short circuit etc. with protective circuit.
A plurality of small-sized plastic-shell formula circuit breakers are installed in distribution panelboard.In distribution panelboard, use a plurality of small-sized plastic-shell formula circuit breakers may need expensive manufacturing cost and high Assembling Production power.Correspondingly, the extinguishing arc mechanism that needs to have the switching mechanism of miniature dimensions and simple structure always and be used for small-sized plastic-shell formula circuit breaker.
In addition, need to be used for the switching mechanism of small-sized plastic-shell formula circuit breaker always, this switching mechanism is because long disconnection spacing can implement to have the cut-out function of the brilliance of higher nominal electric current, and this disconnection spacing is implemented as movable contactor and separates with fixed contact when circuit opening operation (trip operation).
Traditional switching mechanism that is used for small-sized plastic-shell formula circuit breaker has bigger size and complicated assembly structure.
Equally, three springs of use such as main spring, trip spring and contact pressure spring.
Equally, cut-out function is lower, and also, spacing is short to make rated current lower owing to disconnect.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of switching mechanism that is used for small-sized plastic-shell formula circuit breaker, this switching mechanism can have miniature dimensions and simple structure, and owing to can realize remarkable cut-out function than long disconnection spacing.
In order to reach these and other advantages and according to purpose of the present invention, as implementing and generalized description at this, to provide a kind of switching mechanism that is used for small-sized plastic-shell formula circuit breaker, it comprises:
Handle, it provides the mode of manual operation small-sized plastic-shell formula circuit breaker to open position (so-called " disconnection " position) or make position (so-called " conducting " position);
The machine power drive link, the one end is connected to this handle;
Breech lock, it is connected to the other end of machine power drive link, and by the machine power rotation by the transmission of machine power drive link;
Fixed contact, it is connected to the electric loading of power supply or power circuit;
Movable contactor, its can rotate to the position of contact fixed contact or the position that separates with fixed contact so that disconnect or closed circuit, one end of movable contactor is connected to breech lock so that rotate on the direction identical with breech lock, and movable contactor has a plurality of contact surfaces of contact pivot point;
Spring, the one end is connected to movable contactor, be used for when closing of circuit is operated on the direction of movable contactor contact fixed contact for movable contactor provides elastic force, and when the circuit opening operation, on the direction that movable contactor and fixed contact separate, provide elastic force for movable contactor; And
Fixed axis, it is constructed to provide pivot point by the outer surface that contacts movable contactor when movable contactor rotates with closure or open circuit.
Aforementioned and other purposes of the present invention, feature, scheme and advantage will be from hereinafter becoming apparent in conjunction with the accompanying drawings the detailed description.
Description of drawings
Included accompanying drawing provides further understanding of the invention, and accompanying drawing is incorporated in the specification and constituted the part of specification, has illustrated embodiments of the present invention and has been used from explanation principle of the present invention with specification one.
In the accompanying drawings:
Fig. 1 is the longitudinal section according to small-sized plastic-shell formula circuit breaker of the present invention, and it represents the circuit off-state by the switching mechanism that has removed trip(ping) bar;
Fig. 2 is the longitudinal section according to small-sized plastic-shell formula circuit breaker of the present invention, and it represents the closing of circuit state by the switching mechanism that has removed trip(ping) bar;
Fig. 3 is the stereogram according to the movable contactor of the switching mechanism that is used for small-sized plastic-shell formula circuit breaker of the present invention;
Fig. 4 is the enlarged drawing of chain-dotted line among Fig. 3 " A ", and its expression is according to the movable contactor of the switching mechanism that is used for small-sized plastic-shell formula circuit breaker of the first embodiment of the present invention;
Fig. 5 is the partial enlarged drawing of chain-dotted line among Fig. 3 " A ", the movable contactor of its expression switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to a second embodiment of the present invention;
Fig. 6 is the exploded perspective view that is used for the switching mechanism of small-sized plastic-shell formula circuit breaker according to of the present invention, and it is represented according to relative position, shape and the rigging position that is used for movable contactor, movable contactor lid, breech lock and the trip(ping) bar of the switching mechanism of small-sized plastic-shell formula circuit breaker of the present invention;
Fig. 7 is the longitudinal section according to small-sized plastic-shell formula circuit breaker of the present invention, and it represents the circuit open mode by the switching mechanism with trip(ping) bar;
Fig. 8 is the longitudinal section according to small-sized plastic-shell formula circuit breaker of the present invention, and it represents the closing of circuit state by the switching mechanism with trip(ping) bar; And
Fig. 9 is the view of expression according to the shape of the assembly of the switching mechanism that is used for small-sized plastic-shell formula circuit breaker of the present invention, and the assembling process of expression assembly.
Embodiment
Provide detailed description of the invention now with reference to accompanying drawing.
Fig. 1 is the longitudinal section according to small-sized plastic-shell formula circuit breaker of the present invention, the circuit off-state of its switching mechanism by having removed trip(ping) bar.
With reference to Fig. 1, the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to the present invention comprises handle 21, power transmission pole 22, breech lock 23, fixed contact 29, movable contactor 27, spring 26 and fixed axis 25.
One end of power transmission pole 22 is connected to handle 21.Correspondingly, power transmission pole 22 applies the user by handle 21 manual force transfers to other assemblies of switching mechanism, or power is transferred to handle 21 from another assembly of switching mechanism.Power transmission pole 22 is the bar members with approximate " M " shape, and has two legs at its two ends.When the two legs of power transmission pole 22 was inserted into the bar connection opening that is arranged on handle 21 and breech lock 23, power transmission pole 22 was connected to handle 21 and breech lock 23.
Fixed contact 29 is connected to the power supply or the electric loading of circuit (power circuit), and is provided with contact 29a in its end.In case fixed contact 29 is electrically connected to the power supply of circuit, movable contactor 27 just is electrically connected to the electric loading of circuit.On the contrary, in case fixed contact 29 is electrically connected to the electric loading of circuit, movable contactor 27 just is electrically connected to the power supply of circuit.As shown in Figure 1, fixed contact 29 has contact 29a.
One end of spring 26 is connected to movable contactor 27, and the other end is fixed to moulds shell 40.Moulding shell 40 forms so that the shell of the small-sized plastic-shell formula circuit breaker that is known as mold cased circuit breaker or circuit breaker is provided by molded electrical insulating material.The shell 40 of moulding as the shell of small-sized plastic-shell formula circuit breaker will be contained in wherein such as the assembly of the small-sized plastic-shell formula circuit breaker of switching mechanism, tripping mechanism and extinguishing arc mechanism.In the closing of circuit operation of movable contactor 27 contact fixed contacts 29, spring 26 provides elastic force for movable contactor 27 on the direction of movable contactor 27 contact fixed contacts 29.Yet in the circuit opening operation that movable contactor 27 and fixed contact 29 separate, spring 26 provides elastic force for movable contactor 27 on the direction that movable contactor 27 and fixed contact 29 separate.
When movable contactor 27 rotates with disconnection or closed circuit, thereby the outer surface of fixed axis 25 contact movable contactors 27 provides pivot point.Fixed axis 25 is positioned so that be adjacent to the part that movable contactor 27 is connected to an end of spring 26.Equally, fixed axis 25 can be constructed to be fixed to the extra metal shaft of moulding shell 40, or is integrated in the axial processes of moulding shell 40.
With reference to Fig. 1, Reference numeral 40a refers to and moulds the zone that extinguishing arc mechanism (with reference to 33 among Fig. 7) will be installed in the shell 40, and Reference numeral 40b refers to and moulds the zone that tripping mechanism (with reference to Fig. 7 and Fig. 8) will be installed in the shell 40.And Reference numeral 40c1 and 40c2 refer to respectively and will the terminal installation region of power terminal and electric loading terminal be installed.
Fig. 3 is the stereogram according to the movable contactor of the switching mechanism that is used for small-sized plastic-shell formula circuit breaker of the present invention.Fig. 4 is the enlarged drawing of chain-dotted line among Fig. 3 " A ", and its expression is according to the movable contactor of the switching mechanism that is used for small-sized plastic-shell formula circuit breaker of the first embodiment of the present invention.Fig. 5 is the partial enlarged drawing of chain-dotted line among Fig. 3 " A ", the movable contactor of its expression switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to a second embodiment of the present invention.
Shown in Figure 4 as according to the first embodiment of the present invention, the first surface of movable contactor 27 can be constructed to inclined surface 27a-3, and the second surface of movable contactor 27 can be constructed to curved surfaces 27a-4.
Shown in Figure 5 as according to a second embodiment of the present invention, the first surface of movable contactor 27 can be constructed to have the curved surfaces 27a '-3 of predetermined first curvature radius, and the second surface of movable contactor 27 can be constructed to have the second curved surfaces 27a '-4 less than the radius of curvature of first curvature radius.
As shown in Figure 3, movable contactor 27 can comprise supporting board 27a and the 27b of contactor portion with contact.According to an embodiment, supporting board 27a is formed by iron, and the 27b of contactor portion is formed by copper.That is to say that movable contactor 27 can be constructed to the element that formed by different materials.According to another embodiment, supporting board 27a and the 27b of contactor portion can be integrated each other by being formed by the same material such as iron or copper.
Hereinafter, with reference to Fig. 6 and Fig. 9 relative position, shape and the assembly method that is used for the switching mechanism of small-sized plastic-shell formula circuit breaker according to the present invention is elaborated.
The structure of movable contactor 27 has been described in detail with reference to Fig. 3, therefore will omit the explanation to the same configuration of movable contactor 27.
The planar shaped opposite side surface that trip(ping) bar 24 has arc one side surface and has projection.Trip(ping) bar 24 comprises from the outstanding upper end 24a in the upper end of arc one side surface; The movable contactor lid that is arranged on the upside (left side among Fig. 6) of front surface connects projection 24b; Be arranged on its lower end so that towards the tripping force acceptance division 24c of side, be used for the trip operation (circuit opening operation) of reception with the tripping mechanism 32 of implementing Fig. 7; Allow to connect the tripping operation bowl cover tube connector 24d of portion of tripping operation bowl cover 31; And the tripping operation bowl cover tube connector 24d of portion that is arranged on the rear surface of trip(ping) bar 24 is illustrated in the interior right side of frame of broken lines on Fig. 9 the right.
As shown in Figure 9, the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to the present invention may further include tripping operation bowl cover 31.
Tripping operation bowl cover 31 comprises elliptical body portion, to the lid extension 31c that extends laterally, is formed on the lid slot part 31a of a side of main part from main part backward and onwards, and connects projection 31b from main part to front side (right side Fig. 9) outstanding bar.
The end that the movable contactor lid that lid slot part 31a is suitable for that the trip(ping) bar connecting hole 30c (with reference to Fig. 6) via movable contactor lid 30 is extended connects projection 24b (with reference to Fig. 6) is installed in wherein.Shown in rightmost figure among Fig. 9, the rear portion of lid slot part 31a is sealed.When the free end that connects projection 24b (with reference to Fig. 6) when the movable contactor of trip(ping) bar 24 lid is installed to the lid slot part 31a of tripping operation bowl cover 31, can keep the movable contactor lid 30 that connects and the confined state between the trip(ping) bar 24.
As shown in Figure 9, bar connects the tripping operation bowl cover tube connector 24d of portion that projection 31b is installed to the back that is arranged on trip(ping) bar 24, and trip(ping) bar 24 and tripping operation bowl cover 31 are connected to each other.
Shown in rightmost figure among Fig. 9, the end of the lid extension 31c of tripping operation bowl cover 31 is positioned so that contact the upper surface that the breech lock of contiguous movable contactor lid 30 connects the movable contactor lid 30 of axle hole 30a (with reference to Fig. 6).Simultaneously, the end of the lid extension 31c of tripping operation bowl cover 31 is positioned so that contact the end that the contactor of breech lock 23 connects axial region 23a, and contactor connects axial region 23a connects axle hole 30a (with reference to Fig. 6) and movable contactor 27 by breech lock axle hole 27a-1.Lid extension 31c can comprise bent member so that have elastic force to keep the contact condition of movable contactor 27, movable contactor lid 30 and breech lock 23.For this reason, tripping operation bowl cover 31 can form by molded and shaped synthetic resin.By lid extension 31c, can keep the connection status (confined state) between movable contactor 27, movable contactor lid 30 and the breech lock 23.
Hereinafter, explanation is assembled according to the method that is used for the switching mechanism of small-sized plastic-shell formula circuit breaker of the present invention.
At first, movable contactor lid 30 is installed so that surround the top of movable contactor 27, more specifically, so that the top of movable contactor 27 (being supporting board 27a) can be between movable contactor covers two boards of 30.At this, the axle hole 27a-1 of movable contactor 27 is connected axle hole 30a alignment and is used for follow-up program to communicate with each other with the breech lock of movable contactor 30.
Next, the contactor of breech lock 23 connects that axial region 23a is inserted into the axle hole 27a-1 of movable contactor 27 and the breech lock of movable contactor 30 is connected axle hole 30a.Correspondingly, formed the semi-finished product assembling of movable contactor 27, movable contactor lid 30 and breech lock 23.
The movable contactor lid connection projection 24b of trip(ping) bar 24 is inserted among the trip(ping) bar connecting hole 30c of movable contactor lid 30, thereby obtains to be constructed to be installed to the trip(ping) bar 24 of semi-finished product assembly.
Next, assembling tripping operation bowl cover 31.The free end of the movable contactor lid connection projection 24b (with reference to Fig. 6) of trip(ping) bar 24 is installed to the lid slot part 31a of tripping operation bowl cover 31.Simultaneously, as shown in Figure 9, bar connects projection 31b and is installed to the tripping operation bowl cover tube connector 24d of portion that is arranged on trip(ping) bar 24 rear surfaces, thereby trip(ping) bar 24 and tripping operation bowl cover 31 are coupled to each other.The end of lid extension 31c is positioned so that contact the upper surface that the breech lock of contiguous movable contactor lid 30 connects the movable contactor lid 30 of axle hole 30a (with reference to Fig. 6).Simultaneously, the end of the lid extension 31c of tripping operation bowl cover 31 is positioned so that contact the end that the contactor of breech lock 23 connects axial region 23a, and contactor connects axial region 23a connects axle hole 30a (with reference to Fig. 6) and movable contactor 27 by breech lock axle hole 27a-1.Correspondingly, obtain the assembling of movable contactor 27, movable contactor lid 30, breech lock 23, trip(ping) bar 24 and tripping operation bowl cover 31.
Next, assemble spring, power transmission pole and the handle that is used for the switching mechanism of small-sized plastic-shell formula circuit breaker according to of the present invention each other.Correspondingly, obtained the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to of the present invention, be described with reference to Fig. 1.
By described structure, a shank in a pair of shank of power transmission pole 22 inserts in the bar connection opening of handle 21.And another shank of power transmission pole 22 inserts among the power transmission pole tube connector 23b of portion (with reference to Fig. 6) of breech lock 23.Correspondingly, handle 21, power transmission pole 22 and bar 23 are connected to each other so that interlocked with one another.
Next, an end of spring 26 engages by spring junction surface 27a-2 (with reference to Fig. 6), and the other end of spring 26 is by engaging from moulding shell 40 fixing outstanding spring-loaded projection (not shown).Correspondingly, finished the assembling process that is used for the switching mechanism of small-sized plastic-shell formula circuit breaker according to of the present invention.
Hereinafter, describe in detail according to the operation that is used for the switching mechanism of small-sized plastic-shell formula circuit breaker of the present invention with reference to Fig. 1 to Fig. 3 and Fig. 6 to Fig. 8.
At first, will illustrate from " disconnection " position that (i.e. movable contactor as shown in Figure 1 separate with fixed contact circuit open position) is operated to " conducting " position (i.e. the circuit closed position of movable contactor contact fixed contact as shown in Figure 2).
In case during " conducting " position (right side among the figure) in the state of user's manual operation handle 21 to Fig. 1, user's manual force transfers to breech lock 23 by power transmission pole 22.That is to say, when the connecting portion of handle 21 and power transmission pole 22 along with handle 21 turns clockwise (lower right among Fig. 1 to) during to the right side, power transmission pole 22 also to the lower right to mobile.Correspondingly, the breech lock 23 that is connected to power transmission pole 22 also to the lower right to moving.When breech lock 23 to the lower right when mobile, the movable contactor 27 and the movable contactor lid 30 that are connected to breech lock 23 also will be to the lower right to moving.Yet because movable contactor lid 30 is connected to fixed axis 25 just in order to rotate, movable contactor lid 30 turns clockwise on its position.At this, movable contactor 27 is that the center (is the curved surfaces 27a-4 Fig. 4 from second surface with fixed axis 25, or the second curved surfaces 27a '-4 among Fig. 5) state of contact fixed axis 25 turns clockwise to the position of first surface (be the inclined surface 27a-3 among Fig. 4, or the first curved surfaces 27a '-3 among Fig. 5) contact fixed axis 25.At this, state is from the state variation of the second curved surfaces 27a '-4 contact fixed axis 25 with small curvature radius to the first curved surfaces 27a '-3 or have a state of the inclined surface 27a-3 contact fixed axis 25 of larger radius of curvature.As a result, movable contactor 27 turns clockwise in Fig. 2 and Fig. 3.At this, spring 26 provides elastic force on the direction of movable contactor 27 contact fixed contacts 29.Correspondingly, movable contactor 27 rotations are so that contact with fixed contact 29 more quickly.After movable contactor 27 had touched fixed contact 29, the elastic force of spring 26 was as the contact pressure that keeps the contact condition between movable contactor 27 and the fixed contact 29.
Next, the operation of the circuit open position (open position) that separates to Fig. 1 and movable contactor shown in Figure 7 and fixed contact of explanation is contacted fixed contact from Fig. 2 with movable contactor shown in Figure 8 circuit closed position (conduction position).
When the circuit among Fig. 8 took place such as abnormal currents such as short circuits, the operating side of the moving core of tripping mechanism was moved to the right side.At this, tripping mechanism comprises the coil that is electrically connected to circuit, and the moving core that can be moved by the electromagnetic force of coil.When moving to the right side, the operating side of moving core promotes the tripping force acceptance division 24c of trip(ping) bar 24.As a result, trip(ping) bar 24 is rotated counterclockwise in the state shown in Figure 7.When trip(ping) bar 24 was rotated counterclockwise, the movable contactor lid 30 that is connected to movable contactor lid connection projection 24b was rotated counterclockwise.Equally, movable contactor 27, the breech lock 23 and the contactor connecting axle that are connected to movable contactor lid 30 divide 23a (with reference to Fig. 6) also to be rotated counterclockwise.At this, movable contactor 27 is that the center (is the inclined surface 27a-3 Fig. 4 from first surface with fixed axis 25, or the first curved surfaces 27a '-3 among Fig. 5) state of contact fixed axis 25 is rotated counterclockwise to the position of second surface (be the curved surfaces 27a-4 among Fig. 4, or the second curved surfaces 27a '-4 among Fig. 5) contact fixed axis 25.At this, state contacts the state of fixed axis 25 to the second curved surfaces 27a '-4 with small curvature radius from the first curved surfaces 27a '-3 or state variation with inclined surface 27a-3 contact fixed axis 25 of larger radius of curvature.As a result, movable contactor 27 turns clockwise in the Fig. 1 of the disconnection spacing with increase and Fig. 2, and this disconnection spacing refers to the distance that movable contactor 27 and fixed contact 29 separate.At this, spring 26 provides elastic force on the direction that movable contactor 27 and fixed contact 29 separate.Correspondingly, movable contactor 27 rotations are so that separate with fixed contact 29 quickly.After movable contactor 27 separated with fixed contact 29, the elastic force of spring 26 was as the bias force that keeps movable contactor 27 with the separated position of fixed contact 29.
As previously mentioned, the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to the present invention comprises a spring.In the closing of circuit operation, spring is used to increase the contact pressure between movable contactor and the fixed contact.Yet in the circuit opening operation, spring is used to quicken separating of movable contactor and fixed contact.Correspondingly, assembly is simplified, and has strengthened Assembling Production power.
The switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to the present invention is included as the fixed axis that movable contactor provides pivot point.And, a plurality of contact surfaces of contact fixed axis when movable contactor has rotation.Correspondingly, the anglec of rotation of movable contactor increases in the circuit opening operation.As a result, movable contactor increases with the disconnection spacing that fixed contact separates, thereby has improved the circuit breaking cpacity.
The switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to the present invention is included as the fixed axis that movable contactor provides pivot point.Movable contactor is included in the first surface of the position contact fixed axis of contact fixed contact, and the second surface that contacts fixed axis in the position that separates with fixed contact 29 and rotate.And first surface is set to inclined surface, and second surface is set to curved surfaces.Correspondingly, the anglec of rotation of movable contactor increases in the circuit opening operation.As a result, movable contactor increases with the disconnection spacing that fixed contact separates, thereby has improved the circuit breaking cpacity.
The switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to the present invention is included as the fixed axis that movable contactor provides pivot point.Movable contactor is included in the first surface of the position contact fixed axis of contact fixed contact, and the second surface that contacts fixed axis in the position that separates with fixed contact 29 and rotate.And first surface is set to have first curved surfaces of predetermined first curvature radius, and second surface is set to have second curved surfaces less than the radius of curvature of first curvature radius.Correspondingly, the anglec of rotation of movable contactor increases in the circuit opening operation.As a result, movable contactor increases with the disconnection spacing that fixed contact separates, thereby has improved the circuit breaking cpacity.
At the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to the present invention, the supporting board of movable contactor and contactor portion are integrated each other by being formed by the same material such as iron or copper.Correspondingly, reduced manufacturing cost.
Previous embodiment and advantage only are exemplary and should not be construed as restriction the present invention.This instruction can easily be applied to the device of other types.Specification is intended to explain rather than limit the scope of claim.Multiple replacement, improvement and variation are conspicuous for a person skilled in the art.The feature of exemplary embodiment described here, structure, method and other characteristics can make up in many ways to obtain additional and/or alternate exemplary embodiments.
Because of feature of the present invention can implement not deviate from its characteristic in a variety of forms, what will also be understood that is that the foregoing description is not limited by any details of above stated specification, except as otherwise noted, and should be broadly interpreted as in subsidiary claim restricted portion, thereby fall into all changes and improvements changes of the boundary of claim and scope, or described boundary and scope be equal to that to replace the claim that is intended to by subsidiary included.
Claims (11)
1. switching mechanism that is used for small-sized plastic-shell formula circuit breaker, it comprises:
Handle, it provides the mode of the described small-sized plastic-shell formula of a kind of manual operation circuit breaker to open position or make position;
Power transmission pole, the one end is connected to described handle;
Breech lock, it is connected to the other end of described power transmission pole, and by the mechanical force rotation by described power transmission pole transmission;
Fixed contact, it is electrically connected to the electric loading of power supply or power circuit;
Movable contactor, its rotate to the position of the described fixed contact of contact or the position that separates with described fixed contact so that disconnect or closed described circuit, one end of described movable contactor is connected to described breech lock so that in the direction rotation identical with described breech lock, and described movable contactor has a plurality of contact surfaces of contact pivot point;
Spring, the one end is connected to described movable contactor, be used for when closing of circuit is operated contacting on the direction of described fixed contact to described movable contactor provides elastic force, and when the circuit opening operation, on the direction that described movable contactor and described fixed contact separate, provide elastic force for described movable contactor at described movable contactor; And
Fixed axis, it is constructed to provide pivot point by the outer surface that contacts described movable contactor when described movable contactor rotates with closure or disconnects described circuit.
2. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 1, the described contact surface of wherein said movable contactor comprises a plurality of surfaces with different curvature radius.
3. the part of described movable contactor of an end that the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 1, wherein said fixed axis were positioned as and were connected to described spring is adjacent, and
Wherein said movable contactor comprises:
First surface, its position at the described fixed contact of contact contacts described fixed axis; And
Second surface, it is contacting described fixed axis with position that described fixed contact separates.
4. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 3, the described first surface of wherein said movable contactor comprises inclined surface, and the described second surface of described movable contactor comprises curved surfaces.
5. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 3, the described first surface of wherein said movable contactor comprises first curved surfaces with predetermined first curvature radius, and the described second surface of described movable contactor comprises second curved surfaces that has less than the radius of curvature of described first curvature radius.
6. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 1, wherein said movable contactor comprises:
Supporting board; And
Contactor portion with contact.
7. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 6, wherein said supporting board is formed by iron, and described contactor portion is formed by copper.
8. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 6, wherein said supporting board and described contactor portion form and integrated each other formation by the same material by iron or copper.
9. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 1 further comprises:
The movable contactor lid, it is connected to described breech lock by axle and described movable contactor, described contactor lid has and is used for described fixed axis is inserted wherein axle accommodation hole, and to be constructed in the direction identical with described breech lock be the center rotation with described fixed axis; And
Trip(ping) bar, it can rotate and have and be connected to the connection projection that described movable contactor covers.
10. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 9 further comprises the tripping operation bowl cover, and described tripping operation bowl cover has:
Main part;
The lid slot part, it is formed on described main part place, and is constructed to be suitable for the free end of the described connection projection of described trip(ping) bar is installed in wherein;
The lid extension, it extends so that contact coupling part between described movable contactor, described movable contactor lid and the described breech lock from described main part, so that keep the connection status between them.
11. the switching mechanism that is used for small-sized plastic-shell formula circuit breaker according to claim 10, the described lid extension of wherein said tripping operation bowl cover comprises bender element, so that have the elastic force of the contact condition of keeping the coupling part between described movable contactor, described movable contactor lid and the described breech lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910178869.4A CN102044384B (en) | 2009-10-09 | 2009-10-09 | Switching mechanism for minitype plastic shell type circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910178869.4A CN102044384B (en) | 2009-10-09 | 2009-10-09 | Switching mechanism for minitype plastic shell type circuit breaker |
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| CN102044384A true CN102044384A (en) | 2011-05-04 |
| CN102044384B CN102044384B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910178869.4A Active CN102044384B (en) | 2009-10-09 | 2009-10-09 | Switching mechanism for minitype plastic shell type circuit breaker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590804A (en) * | 2014-11-04 | 2016-05-18 | 西门子公司 | Opening mechanism of breaker, and breaker |
| WO2016145704A1 (en) * | 2015-03-16 | 2016-09-22 | 温州高能电气有限公司 | Miniature circuit breaker |
| WO2022000272A1 (en) * | 2020-06-30 | 2022-01-06 | 浙江沃斯托电气有限公司 | Circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0202546A2 (en) * | 1985-05-17 | 1986-11-26 | Licentia Patent-Verwaltungs-GmbH | Switching mechanism for a protective power circuit breaker |
| CN2607656Y (en) * | 2002-11-28 | 2004-03-24 | 正泰集团公司 | Operating mechanism for auxiliary electrical apparatus release of circuit breaker |
| CN1596455A (en) * | 2001-11-06 | 2005-03-16 | Abb服务有限公司 | Low-voltage circuit breaker |
| CN201015109Y (en) * | 2007-02-15 | 2008-01-30 | 黄华道 | Small circuit breaker |
-
2009
- 2009-10-09 CN CN200910178869.4A patent/CN102044384B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0202546A2 (en) * | 1985-05-17 | 1986-11-26 | Licentia Patent-Verwaltungs-GmbH | Switching mechanism for a protective power circuit breaker |
| CN1596455A (en) * | 2001-11-06 | 2005-03-16 | Abb服务有限公司 | Low-voltage circuit breaker |
| CN2607656Y (en) * | 2002-11-28 | 2004-03-24 | 正泰集团公司 | Operating mechanism for auxiliary electrical apparatus release of circuit breaker |
| CN201015109Y (en) * | 2007-02-15 | 2008-01-30 | 黄华道 | Small circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590804A (en) * | 2014-11-04 | 2016-05-18 | 西门子公司 | Opening mechanism of breaker, and breaker |
| CN105590804B (en) * | 2014-11-04 | 2018-03-27 | 西门子公司 | The brake separating mechanism and its breaker of breaker |
| WO2016145704A1 (en) * | 2015-03-16 | 2016-09-22 | 温州高能电气有限公司 | Miniature circuit breaker |
| WO2022000272A1 (en) * | 2020-06-30 | 2022-01-06 | 浙江沃斯托电气有限公司 | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102044384B (en) | 2014-09-03 |
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