CN209298053U - Resistance mutation type contact device and circuit breaker - Google Patents
Resistance mutation type contact device and circuit breaker Download PDFInfo
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- CN209298053U CN209298053U CN201920247257.5U CN201920247257U CN209298053U CN 209298053 U CN209298053 U CN 209298053U CN 201920247257 U CN201920247257 U CN 201920247257U CN 209298053 U CN209298053 U CN 209298053U
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- 238000001179 sorption measurement Methods 0.000 claims description 27
- 230000005389 magnetism Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 abstract description 11
- 230000007246 mechanism Effects 0.000 description 17
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- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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Abstract
The utility model discloses a resistance sudden change formula contact device and circuit breaker relates to circuit breaker technical field. The resistance mutation type contact device comprises a tripping piece, a resistance piece, a connecting rod, a first moving contact, a second moving contact, a first static contact and a second static contact. One side of the first fixed contact is connected with the second fixed contact through a resistor, the other side of the first fixed contact is abutted against the first moving contact, the first moving contact is connected with the second moving contact through a connecting rod, the second moving contact is detachably connected with the second fixed contact, and the release piece is hinged with the connecting rod. Compared with the prior art, the utility model provides a resistance sudden change formula contact device is owing to adopted and taken off the fastener with connecting rod articulated and can dismantle the second moving contact of being connected with the second static contact, so can utilize the mode that the resistance sudden change increases to reduce the electric current that passes through and accomplish outage work to prevent to produce electric arc, safe and reliable.
Description
Technical field
The utility model relates to breaker technical field, in particular to a kind of sudden change of resistivity formula contact apparatus and
Breaker.
Background technique
Currently, distribution is an extremely important link during generation, conveying and the use of electricity, and in distribution
In system, miniature circuit breaker becomes an essential safety protection facility.Miniature circuit breaker can be generated in divide-shut brake
Electric arc, since volume is limited, short circuit operation breaking capacity is relatively low (general 6kA), can be used only in end electric appliance distribution.Many fields
(such as substation, power distribution station, switching station etc.) prospective short circuit current is closed not to be available greatly very much.Inventor is the study found that increase two
Though opening away from that can improve breaking capacity between contact, synchronizes the volume for increasing miniature circuit breaker, so that the miniature circuit breaker is not
It is suitable for the lesser occasion in space again；Using magnetic blow-out and air-blow technology, by arc-chute blow-out, breaking capacity by volumetric constraint according to
So it is difficult to improve.
In view of this, design and manufacture it is a kind of avoid generate electric arc sudden change of resistivity formula contact apparatus and breaker it is special
It is to be particularly important in switchgear production.
Utility model content
The purpose of this utility model is to provide a kind of sudden change of resistivity formula contact apparatus, occupy little space, prominent using resistance
Become the mode increased to reduce the electric current passed through and complete power-off work, to prevent electric arc, securely and reliably.
The another object of the utility model is to provide a kind of breaker, occupy little space, and is increased using sudden change of resistivity
Mode reduces the electric current passed through and completes power-off work and securely and reliably, stablized practical with preventing electric arc.
The utility model is that it is realized by adopting the following technical scheme.
A kind of sudden change of resistivity formula contact apparatus, including dropout part, resistance unit, connecting rod, the first moving contact, the second dynamic touching
The side of head, the first static contact and the second static contact, the first static contact is connect by resistance unit with the second static contact, the other side and
First moving contact supports, and the first moving contact is connect by connecting rod with the second moving contact, and the second moving contact and the second static contact can
Dismantling connection, dropout part is hinged with connecting rod, and dropout part can drive connecting rod movement when far from the first static contact, so that the
One moving contact is detached from the first static contact.
Further, the sum of resistance of resistance unit and the second static contact be greater than the first moving contact and connecting rod resistance it
With.
Further, dropout part includes first rotating shaft and the second shaft, and first rotating shaft is fixedly connected with the second shaft, and is in
Angle setting, the second shaft and connecting rod are hinged.
Further, one end of connecting rod and the first moving contact weld, and the other end and the second moving contact weld, the second shaft
Connecting rod is articulated with close to the side of the first moving contact.
Further, the second static contact is provided with arcwall face, and the shape of the second moving contact and the shape of arcwall face match,
Second moving contact is bonded the concave surface for being set to arcwall face, and the second moving contact can be in the first moving contact far from the first static contact phase
Second static contact is rotated.
Further, the first adsorption section is provided in arcwall face, the second moving contact is provided with the second adsorption section, the first absorption
Portion is connect with the second adsorption section magnetism.
Further, sudden change of resistivity formula contact apparatus further includes stop part, and stop part and the first moving contact interval are arranged, and
It is corresponding with the position of the first moving contact, stop part can when the first moving contact moves to predeterminated position to the first moving contact into
Row limit so that dropout part drives the second moving contact to move by connecting rod, and is detached from the second static contact.
Further, stop part is selectively supported with the first moving contact, and stop part is provided with third adsorption section, and first is dynamic
Contact is provided with the 4th adsorption section, and third adsorption section is connected with the 4th adsorption section magnetism.
Further, sudden change of resistivity formula contact apparatus further includes conduct piece, and conduct piece is connect with the first static contact, conduct piece
For being connect with extraneous power supply or electric appliance.
A kind of breaker, including above-mentioned sudden change of resistivity formula contact apparatus, which includes tripping
Part, resistance unit, connecting rod, the first moving contact, the second moving contact, the first static contact and the second static contact, the one of the first static contact
Side connect by resistance unit with the second static contact, and the other side is supported with the first moving contact, and the first moving contact passes through connecting rod and the
The connection of two moving contacts, the second moving contact is detachably connected with the second static contact, and dropout part is hinged with connecting rod, and dropout part can be
Connecting rod movement is driven when far from the first static contact, so that the first moving contact is detached from the first static contact.
Sudden change of resistivity formula contact apparatus and breaker provided by the utility model have the advantages that
Sudden change of resistivity formula contact apparatus provided by the utility model, including dropout part, resistance unit, connecting rod, the first dynamic touching
The side of head, the second moving contact, the first static contact and the second static contact, the first static contact is connected by resistance unit and the second static contact
It connects, the other side is supported with the first moving contact, and the first moving contact is connect by connecting rod with the second moving contact, the second moving contact and the
Two static contacts are detachably connected, and dropout part is hinged with connecting rod, and dropout part can drive connecting rod when far from the first static contact
Movement, so that the first moving contact is detached from the first static contact.Compared with prior art, sudden change of resistivity formula touching provided by the utility model
Head device is due to using the dropout part hinged with connecting rod and the second moving contact being detachably connected with the second static contact, institute
Can reduce the electric current passed through in such a way that sudden change of resistivity increases and complete power-off work, to prevent electric arc, safety
Reliably.
Breaker provided by the utility model, including sudden change of resistivity formula contact apparatus, occupy little space, utilize sudden change of resistivity
The mode of increase reduces the electric current passed through and completes power-off work and securely and reliably, stablized practical with preventing electric arc.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the breaker structural schematic diagram under normal condition that the utility model first embodiment provides；
Fig. 2 is the structural schematic diagram for the sudden change of resistivity formula contact apparatus that the utility model first embodiment provides；
Fig. 3 is structural schematic diagram of the breaker that provides of the utility model first embodiment during open circuit；
Fig. 4 be the breaker that provides of the utility model first embodiment be near completion open circuit when structural schematic diagram；
Fig. 5 is the structural schematic diagram after the completion of the breaker open circuit that the utility model first embodiment provides.
Icon: 10- breaker；100- sudden change of resistivity formula contact apparatus；110- conduct piece；130- dropout part；131- first
Shaft；The second shaft of 132-；140- resistance unit；150- stop part；151- third adsorption section；160- connecting rod；170- first is dynamic
Contact；The 4th adsorption section 171-；The second moving contact of 180-；The second adsorption section 181-；The first static contact of 190-；The second stationary contact of 191-
Head；192- arcwall face；The first adsorption section 193-；200- trip switch；300- shell；The first connecting terminal of 400-；500- second
Connecting terminal；600- combined floodgate spanner；700- tripping mechanism.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term "inner", "outside", "upper", "lower", "horizontal" etc. refer to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings or when utility model product uses is used
The orientation or positional relationship often put, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as indicating
Or imply relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " connected ", " installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
With reference to the accompanying drawing, it elaborates to some embodiments of the utility model.In the absence of conflict, under
The feature in embodiment stated can be combined with each other.
Embodiment
Fig. 1 is please referred to, the utility model embodiment provides a kind of breaker 10, for heavy overload or short to occur
The automatic shutdown circuit when failures such as road guarantees Electrical Safety.It occupies little space, and is reduced in the way of sudden change of resistivity increase logical
The electric current crossed simultaneously is completed power-off work and securely and reliably, is stablized practical with preventing electric arc.
Breaker 10 includes sudden change of resistivity formula contact apparatus 100, trip switch 200, shell 300, the first connecting terminal
400, the second connecting terminal 500, combined floodgate spanner 600 and tripping mechanism 700.Sudden change of resistivity formula contact apparatus 100, trip switch
200, the first connecting terminal 400, the second connecting terminal 500 and tripping mechanism 700 are mounted in shell 300, in shell 300
Under the action of to masking and protection.First connecting terminal 400 and the second connecting terminal 500 are installed on the two of shell 300 relatively
End, sudden change of resistivity formula contact apparatus 100 and trip switch 200 are connect with the first connecting terminal 400, the first connecting terminal 400
It is connect with extraneous power supply or electric appliance.One end of second connecting terminal 500 is connect with sudden change of resistivity formula contact apparatus 100, another
End is connect with electric appliance or extraneous power supply.
Sudden change of resistivity formula contact apparatus 100 is connect with tripping mechanism 700, and trip switch 200 can be pushed away in circuit overcurrent
Dynamic tripping mechanism 700, drives tripping mechanism 700 to rotate, so that sudden change of resistivity formula contact apparatus 100 separates, circuit is disconnected,
In the process, tripping mechanism 700 pushes trip switch 200, resets trip switch 200, waits close a floodgate next time.Combined floodgate spanner
600 link with tripping mechanism 700, and can rotate relative to shell 300.The rotation of tripping mechanism 700 is able to drive combined floodgate spanner
600 rotations, that is, trip, and if desired connection circuit, user can turn round combined floodgate spanner 600 by external force, drive tripping again
Mechanism 700 turns round, so that sudden change of resistivity formula contact apparatus 100 closes up, to make power on circuitry.
In the present embodiment, the first connecting terminal 400 is input terminal, and the first connecting terminal 400 passes through electric wire and external world's electricity
Source connection, the second connecting terminal 500 are output terminal, and the second connecting terminal 500 is connect by electric wire with electric appliance.
Referring to figure 2., sudden change of resistivity formula contact apparatus 100 includes conduct piece 110, dropout part 130, resistance unit 140, backstop
Part 150, connecting rod 160, the first moving contact 170, the second moving contact 180, the first static contact 190 and the second static contact 191.First
Static contact 190 is connect by conduct piece 110 with trip switch 200, to fix the phase of the first static contact 190 and trip switch 200
To position, the first static contact 190 is connect by conduct piece 110 with the first connecting terminal 400, to be connected with extraneous power supply.Second
Moving contact 180 is connect with the second connecting terminal 500, to be connected with electric appliance.The side of first static contact 190 passes through resistance unit 140
It is connect with the second static contact 191, the other side is supported with the first moving contact 170, and the first moving contact 170 passes through connecting rod 160 and the
The connection of two moving contacts 180, the second moving contact 180 are detachably connected with the second static contact 191.Dropout part 130 and tripping mechanism 700
Connection, dropout part 130 can rotate under the drive of tripping mechanism 700, so that close or separate first static contact 190, takes off
Fastener 130 and connecting rod 160 are hinged, and dropout part 130 can drive connecting rod 160 to move when far from the first static contact 190, with
The first moving contact 170 is set to be detached from the first static contact 190.Stop part 150 and the first moving contact 170 interval are arranged, and move with first
The position of contact 170 is corresponding, and stop part 150 can be when the first moving contact 170 moves to predeterminated position to the first moving contact
170 are limited, so that dropout part 130 drives the movement of the second moving contact 180 by connecting rod 160, and are detached from the second static contact
191, so that the first static contact 190 and the second moving contact 180 disconnect, so that appliance cut-off.
It is worth noting that, the side of the first static contact 190 passes through the dynamic touching of the first moving contact 170, connecting rod 160 and second
First 180 connection, forms first conductive path (figure is not marked), and the other side of the first static contact 190 is quiet by resistance unit 140, second
Contact 191 is connect with the second moving contact 180, forms second conductive path (figure is not marked).Specifically, resistance unit 140 and second quiet
The sum of resistance of contact 191 is greater than the sum of the resistance of the first moving contact 170 and connecting rod 160, the i.e. resistance of second conductive path
Greater than the resistance of first conductive path, the electric current by first conductive path is less than by the electric current of second conductive path.This reality
It applies in example, the resistance very little of the first moving contact 170 and connecting rod 160 can be ignored, pass through the electric current of first conductive path
It will not change；The Resistance Maximum of resistance unit 140, it is minimum by the electric current of second conductive path, close to zero.
It should be noted that when breaker 10 is under normal condition, the first static contact 190 and the first moving contact
170 support, and first conductive path and second conductive path are in parallel, and the first static contact 190 passes through the parallel circuit and the second dynamic touching
First 180 connection, in the process, due to the resistance very little of first conductive path, can be ignored, so the electricity of parallel circuit
Very little is hindered, the loss very little that electric current is generated by the parallel circuit can be ignored, electric appliance is run well.
When breaker 10 starts open circuit work, dropout part 130 is under the action of tripping mechanism 700 far from the first static contact
190, and connecting rod 160 is driven to move, in the process, second moving contact 180 of 160 one end of connecting rod and the second static contact
191 are detachably connected, so that the second moving contact 180 keeps the fit-state with the second static contact 191, and relative to the second stationary contact
First 191 rotation, the first moving contact 170 of 160 other end of connecting rod is far from the first static contact 190, the first moving contact 170 and first
Static contact 190 separates, and first conductive path disconnects, and the first static contact 190 is gone here and there by second conductive path and the second moving contact 180
Connection, so that extraneous power supply is connected with electric appliance, the Resistance Maximum of resistance unit 140 at this time, the Resistance Maximum of second conductive path,
It is minimum by the electric current of second conductive path, close to zero；Subsequent dropout part 130 continues far under the action of tripping mechanism 700
From the first static contact 190, and by connecting rod 160 drive the first moving contact 170 movement, when the first moving contact 170 move to it is pre-
If when position, stop part 150 limits the first moving contact 170, i.e., one end of connecting rod 160 is limited, connected at this time
Extension bar 160 continues to move under the action of dropout part 130, and the other end of connecting rod 160 is driven to move, that is, drives second to move
Contact 180 moves, so that the second moving contact 180 is separated with the second static contact 191, so that second conductive path disconnects, the
One static contact 190 and the second moving contact 180 disconnect, and realize power-off, in the process, since the electric current in circuit is close to zero,
So electric arc will not be generated, securely and reliably.
It is worth noting that, dropout part 130 includes first rotating shaft 131 and the second shaft 132.Tripping mechanism 700 and first
Shaft 131 is fixedly connected, to drive first rotating shaft 131 to rotate.First rotating shaft 131 is fixedly connected with the second shaft 132, and in folder
Angle setting, first rotating shaft 131 are able to drive the second rotation and rotate.Second shaft 132 and connecting rod 160 are hinged, connecting rod
160 can rotate relative to the second shaft 132.First rotating shaft 131, the second shaft 132 and connecting rod 160 are respectively positioned on same plane
On, so that entire motion process is reliable and stable.
It should be noted that one end of connecting rod 160 and the first moving contact 170 weld, the other end and the second moving contact 180
Welding, to improve bonding strength.Second shaft 132 is articulated with connecting rod 160 close to the side of the first moving contact 170, that is, connects
Bar 160 and the hinged position of the second shaft 132 are hinge joint, the spacing of hinge joint and the first moving contact 170 be less than hinge joint and
The spacing of second moving contact 180, so that the second shaft 132 can be first by the first moving contact when driving connecting rod 160 to rotate
170 are pulled away from the first static contact 190, and the second moving contact 180 is rotated relative to the second static contact 191.
Specifically, the second static contact 191 is provided with arcwall face 192, shape and the arcwall face 192 of the second moving contact 180
Shape matches, and the second moving contact 180 is bonded the concave surface for being set to arcwall face 192, and the second moving contact 180 can be in the first dynamic touching
First 170 far from the first static contact 190 when rotated relative to the second static contact 191, to guarantee that the second static contact 191 dynamic is touched with second
First 180 conducting, to guarantee the conducting of second conductive path.In the present embodiment, the first adsorption section is provided in arcwall face 192
193, the second moving contact 180 is provided with the second adsorption section 181, and the first adsorption section 193 is connect with 181 magnetism of the second adsorption section, with
Second moving contact 180 is adsorbed on the second static contact 191, and the second moving contact 180 can be greater than the outer of the magnetic attraction
Power effect is lower to be separated with the second static contact 191.
It is worth noting that, stop part 150 is fixedly installed in shell 300, and selectively supported with the first moving contact 170
It holds.When the first moving contact 170 moves to predeterminated position, stop part 150 collides with the first moving contact 170, to limit
The position of one moving contact 170 prevents the first moving contact 170 from continuing to rotate with connecting rod 160.Stop part 150 is provided with third
Adsorption section 151, the first moving contact 170 are provided with the 4th adsorption section 171, and third adsorption section 151 and the 4th adsorption section 171 are magnetic even
It connects, the first moving contact 170 is adsorbed on stop part 150, and the first moving contact 170 can be detached from stop part when closing a floodgate
150, and resetting movement is carried out under the drive of dropout part 130.
Incorporated by reference to referring to Fig.1, Fig. 3, Fig. 4 and Fig. 5, it should be noted that when circuital current is less than preset value, first
Static contact 190 is supported with the first moving contact 170, and first conductive path and second conductive path are in parallel, is exported from extraneous power supply
Electric current is transported in electric appliance by parallel circuit, and in the process, the resistance very little of parallel circuit, close to zero, electric current is logical
The loss very little for crossing parallel circuit generation, can be ignored, electric appliance is run well.
When circuital current is more than preset value, trip switch 200 pushes tripping mechanism 700 to rotate, and connecting rod 160 exists
Separate first static contact 190 is in the process fulcrum, connecting rod 160 with the second moving contact 180 under the drive of dropout part 130
It rotates, for the first moving contact 170 far from the first static contact 190, the second moving contact 180 fits in the second static contact 191, and phase
Second static contact 191 is rotated, parallel circuit becomes series circuit, and the electric current exported from extraneous power supply passes through the second conductive path
Diameter, and be transported in electric appliance, in the process, the Resistance Maximum of resistance unit 140 causes to connect by the electric current of second conductive path
It is bordering on zero；Continue under the drive of dropout part 130 with rear connecting rod 160 far from the first static contact 190, the first moving contact 170 exists
It will not be subjected to displacement under the action of stop part 150, be fulcrum with the first moving contact 170 in the process, connecting rod 160 occurs
Rotation, the second moving contact 180 are detached from the second static contact 191, realize power-off, since the electric current in circuit at this time is close to zero, institute
Electric arc will not be generated, securely and reliably.
When combined floodgate, user turns round combined floodgate spanner 600 by external force, drives tripping mechanism 700 to turn round, to pass through dropout part
130 drive connecting rod 160 to turn round, and push the revolution of the first moving contact 170, and be detached from stop part 150, until with the first static contact
190 support, and in the process, the revolution of the second moving contact 180 until being bonded with the second static contact 191, and is adsorbed in the second stationary contact
On first 191, complete to reset.
Sudden change of resistivity formula contact apparatus 100 provided by the embodiment of the utility model, including dropout part 130, resistance unit 140,
Connecting rod 160, the first moving contact 170, the second moving contact 180, the first static contact 190 and the second static contact 191, the first static contact
190 side is connect by resistance unit 140 with the second static contact 191, and the other side is supported with the first moving contact 170, the first dynamic touching
First 170 are connect by connecting rod 160 with the second moving contact 180, and the second moving contact 180 is detachably connected with the second static contact 191,
Dropout part 130 and connecting rod 160 are hinged, and dropout part 130 can drive connecting rod 160 to move when far from the first static contact 190,
So that the first moving contact 170 is detached from the first static contact 190.Compared with prior art, sudden change of resistivity formula provided by the utility model
Contact apparatus 100 is due to using the dropout part 130 hinged with connecting rod 160 and being detachably connected with the second static contact 191
The second moving contact 180, so can by sudden change of resistivity increase in the way of reduce the electric current passed through and complete power-off work, with
Prevent electric arc, securely and reliably, so that breaker 10 is stablized practical, user experience is good.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of sudden change of resistivity formula contact apparatus, which is characterized in that including dropout part, resistance unit, connecting rod, the first moving contact,
Second moving contact, the first static contact and the second static contact, the side of first static contact pass through the resistance unit and described the
The connection of two static contacts, the other side supports with first moving contact, and first moving contact passes through the connecting rod and described the
The connection of two moving contacts, second moving contact are detachably connected with second static contact, the dropout part and the connecting rod
Hingedly, the dropout part can drive the connecting rod to move when far from first static contact, so that the described first dynamic touching
Head is detached from first static contact.
2. sudden change of resistivity formula contact apparatus according to claim 1, which is characterized in that the resistance unit and described second quiet
The sum of resistance of contact is greater than the sum of the resistance of first moving contact and the connecting rod.
3. sudden change of resistivity formula contact apparatus according to claim 1, which is characterized in that the dropout part includes first rotating shaft
With the second shaft, the first rotating shaft is fixedly connected with second shaft, and in angle be arranged, second shaft with it is described
Connecting rod is hinged.
4. sudden change of resistivity formula contact apparatus according to claim 3, which is characterized in that one end of the connecting rod with it is described
The welding of first moving contact, the other end and second moving contact weld, and second shaft is articulated with the connecting rod close to institute
State the side of the first moving contact.
5. sudden change of resistivity formula contact apparatus according to claim 3, which is characterized in that second static contact is provided with arc
Shape face, the shape of second moving contact and the shape of the arcwall face match, and the second moving contact fitting is set to institute
The concave surface of arcwall face is stated, second moving contact can be when first moving contact be far from first static contact relative to institute
State the rotation of the second static contact.
6. sudden change of resistivity formula contact apparatus according to claim 5, which is characterized in that be provided with first in the arcwall face
Adsorption section, second moving contact are provided with the second adsorption section, and first adsorption section is connect with second adsorption section magnetism.
7. sudden change of resistivity formula contact apparatus according to claim 1, which is characterized in that the sudden change of resistivity formula contact apparatus
It further include stop part, the stop part and first moving contact interval are arranged, and opposite with the position of first moving contact
It answers, the stop part can limit first moving contact when first moving contact moves to predeterminated position, with
Make the dropout part drive second moving contact to move by the connecting rod, and is detached from second static contact.
8. sudden change of resistivity formula contact apparatus according to claim 7, which is characterized in that the stop part selectively with institute
It states the first moving contact to support, the stop part is provided with third adsorption section, and first moving contact is provided with the 4th adsorption section, institute
Third adsorption section is stated to connect with the 4th adsorption section magnetism.
9. sudden change of resistivity formula contact apparatus according to claim 1, which is characterized in that the sudden change of resistivity formula contact apparatus
It further include conduct piece, the conduct piece is connect with first static contact, and the conduct piece is used for and extraneous power supply or electric appliance
Connection.
10. a kind of breaker, which is characterized in that filled including sudden change of resistivity formula contact as described in any one of claim 1 to 9
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247257.5U CN209298053U (en) | 2019-02-27 | 2019-02-27 | Resistance mutation type contact device and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247257.5U CN209298053U (en) | 2019-02-27 | 2019-02-27 | Resistance mutation type contact device and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209298053U true CN209298053U (en) | 2019-08-23 |
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ID=67642836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920247257.5U Active CN209298053U (en) | 2019-02-27 | 2019-02-27 | Resistance mutation type contact device and circuit breaker |
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| CN (1) | CN209298053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659207A (en) * | 2019-02-27 | 2019-04-19 | 厦门大恒科技有限公司 | Resistance mutation type contact device and circuit breaker |
| CN114709117A (en) * | 2022-05-19 | 2022-07-05 | 湖南斯德克智能科技有限公司 | Current-limiting double-break point molded case circuit breaker |
-
2019
- 2019-02-27 CN CN201920247257.5U patent/CN209298053U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659207A (en) * | 2019-02-27 | 2019-04-19 | 厦门大恒科技有限公司 | Resistance mutation type contact device and circuit breaker |
| CN109659207B (en) * | 2019-02-27 | 2024-04-02 | 厦门大恒科技有限公司 | Resistance abrupt contact device and circuit breaker |
| CN114709117A (en) * | 2022-05-19 | 2022-07-05 | 湖南斯德克智能科技有限公司 | Current-limiting double-break point molded case circuit breaker |
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