CN110112714A - A kind of current overload auto-cutout guard method - Google Patents
A kind of current overload auto-cutout guard method Download PDFInfo
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- CN110112714A CN110112714A CN201910416132.5A CN201910416132A CN110112714A CN 110112714 A CN110112714 A CN 110112714A CN 201910416132 A CN201910416132 A CN 201910416132A CN 110112714 A CN110112714 A CN 110112714A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 98
- 239000000758 substrate Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 238000007667 floating Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005381 potential energy Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 21
- 230000001012 protector Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
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- Breakers (AREA)
- Fuses (AREA)
Abstract
The present invention provides a kind of current overload auto-cutout guard methods; its step is: first; on off mechanism is on state; firewire input pin is connected by thermal expansion mechanism, on off mechanism and firewire output pin; zero curve input pin is directly connected with zero line output pin; general supply and electrical equipment are connected, and circuit is in normal operating condition；Then, when chance failure occurs in electrical equipment/circuit, and circuital current is caused to overload, thermal expansion mechanism, which detects overload current and expands, pushes on off mechanism；Then, push rod pushes on off mechanism and on off mechanism is made to switch to off-state by state, and firewire input pin and firewire output pin disconnect, and circuit automatically cuts off carry out self-protection；Finally, manually by off mechanism by the switching-on state of off-state, circuit restores to operate normally when user excludes electrical equipment/circuit failure.
Description
Technical field
The present invention relates to a kind of high-voltage electricity conveying technology fields, and in particular to a kind of current overload auto-cutout protection side
Method.
Background technique
Circuit fuse is according to electric current be more than specified value for a period of time after, keep melt molten with its own heat generated
Change, be one of most widely used protection device as the protector of short circuit and overcurrent so that circuit be made to disconnect automatically,
But fuse have the defects that in use it is certain, when fuse-link fusing after, need user with changing fuse-link, can
The normal transmission of restoring circuit causes certain inconvenience to the use of user, and has one during with changing fuse-link
Fixed Danger Electric shock risk, this will bury security risk to safety utilization of electric power, for this purpose, the present inventor designs a kind of clever structure, principle letter
The current overload auto-cutout guard method single, easy to use, security performance is strong.
Summary of the invention
To solve the deficiencies in the prior art, the object of the present invention is to provide a kind of clever structure, principles simply, using just
Current overload auto-cutout guard method prompt, security performance is strong.
To realize the above-mentioned technical purpose, the technical solution adopted in the present invention is as follows.
A kind of current overload auto-cutout guard method, step are:
(1) the normal operation circuit stage；
S1: on off mechanism is on state, and firewire input pin connects by thermal expansion mechanism, on off mechanism and firewire output pin
Logical, zero curve input pin is directly connected with zero line output pin, and general supply and electrical equipment are connected, and circuit, which is in, operates normally shape
State；
(2) overload automatically cuts off the stage；
S2: when chance failure occurs in electrical equipment/circuit, and circuital current is caused to overload, thermal expansion mechanism detects overload current
And it expands and pushes on off mechanism；
The thermal expansion mechanism includes the mounting plate being fixedly connected with insulating substrate, and plane where mounting plate is parallel to insulation base
Plate, mounting plate are provided with the cylinder body for being axially perpendicular to mounting plate away from one end face of insulating substrate, seal between mounting plate and cylinder body
It is fixedly connected, the piston for constituting sealed slide-and-guide cooperation with it is provided in cylinder body, cylinder body is opened up away from mounting plate one end
There is opening, the open push rod for extending to outside is coaxially arranged on piston；
The resistance heating coil being fixedly connected with mounting plate is provided in the cylinder body, resistance heating coil is provided with to be connect with what it was connected
Terminal one, binding post two, binding post one is connect with firewire input pin, binding post two is connect on off mechanism, resistance heating coil
It is intracavitary in being provided with sealing inner cavity between piston and sealing to be filled with thermosensitive liquid；
The reset spring one being movably set in outside push rod, one one end of reset spring and cylinder body are provided in cylinder body away from installation version
One end conflict, the other end and piston contradict and the elastic force of reset spring one is directed toward away from mounting plate one end by cylinder body lives always
Plug；
If circuital current overloads, resistance heating coil heats thermosensitive liquid, and thermosensitive liquid expands and makes push rod court
To the external movement of cylinder body, push rod pushes on off mechanism；
S3: push rod pushes on off mechanism and on off mechanism is made to switch to off-state by state, firewire input pin with
Firewire output pin disconnects, and circuit automatically cuts off carry out self-protection；
The on off mechanism includes connecting elements, interface components, limit component, triggering component, connecting elements disconnection and one
End is connect with binding post two, the other end and firewire output contact connect, and interface components are used to be connected the connecting elements disconnected, linking
Component be arranged to can between pressed status and floating state mutually under switching and original state for pressed status, pressed status
Interface components connecting elements is connected, limit component is used to interface components constraining in pressed status, and triggering component receiving pushes away
Bar pushes power and the constraint for releasing limit component to interface components；
The connecting elements includes that insulating base is fixedly connected with insulating substrate, and bottom plate includes strips of conductive plate, and conductive plate is simultaneously
There are two column settings, and conductive guide post one is fixedly installed on conductive plate, and guide post one is axially perpendicular to insulating substrate institute
It is arranged with contact one, contact one and guide post one in plane, guide post one and axially constitutes slide-and-guide cooperation, guide post along it
One outer cover is equipped with buffer spring, and buffer spring one end and conductive plate contradict, and the other end and contact one contradict, guide post one
Top is provided with stop screw, wherein the conducting wire for connecting the two is provided between a conductive plate and binding post two, it is another to lead
Battery plate is connect with firewire output pin；
It is provided with top plate above the bottom plate, top plate is parallel to each other with vertical plate and is provided between the two for carrying out to top plate
The vertical plate of support, the interface components are set between bottom plate and top plate, and interface components include being fixedly installed in leading on bottom plate
To column two, the axial direction for being axially parallel to guide post one of guide post two there are two guide post two is set side by side, covers in guide post two
Equipped with conductive sliding panel, sliding panel and guide post two match and in its axially composition slide-and-guide cooperation, sliding panel
Be provided with with two contacts one opposite contact two one by one, the outer cover of guide post two is led in the surface that contact two is located at contact one
Equipped with reset spring two, two one end of reset spring is contradicted with bottom plate conflict, the other end and sliding panel and the bullet of reset spring two
Power is directed toward sliding panel by bottom plate always, and the top of the guide post two is provided with stop screw；
It is movably set on the top plate and is parallel to the axial insulation down-pressed pole of guide post one, down-pressed pole is parallel to top plate edge and leads
The axial of Xiang Zhuyi constitutes slide-and-guide cooperation, and the bottom end sliding sleeve of down-pressed pole is set in guide post two and can be along being parallel to it
Axially direction is slided, and the bottom end of down-pressed pole and sliding panel contradict, and the top activity of down-pressed pole passes through the outer of insulation crust
Portion, radially fixed on down-pressed pole to wear the inserted link for being parallel to vertical plate, inserted link is close to the bottom of down-pressed pole arrangement and position
Between bottom plate and top plate, limit component is for limiting inserted link, and under original state, down-pressed pole overcomes reset spring two
It contradicts contact two with contact one to dock, and operation of the limit component to inserted link close to top plate carries out constraint limit
System；
The limit component includes that being axially perpendicular to for the circular limit plate being rotatably dispose on vertical plate and the rotation axis is vertical
Plate, limit plate open up on the periphery of inserted link side jagged, are formd at the top of notch for being constrained inserted link
It positive stop hook and limits structure and takes the upper surface for being lining in inserted link, the bottom of notch forms to reset convex block and reset convex block and extend to
The underface of down-pressed pole, limit plate fixed setting on one end face of vertical plate are parallel to its cylindricality constraint axially arranged
Protrusion, constraint protrusion are located at the edge of limit plate and arrange close to top plate；
The limit component further includes the ellipse constraint piece being set between limit plate and top plate, and the rotation of constraint piece one end is set
It is placed on vertical plate and the rotation axis is axially perpendicular to vertical plate, the other end for constraining piece offers constraint card slot one, constrain convex
Rise with constraint card slot one match and constrain protrusion be arranged in constraint card slot one in；
The triggering component is used to carry out the rotation of constraint piece to constrain and capable of releasing the rotational restraint to constraint piece, triggering
Component includes the rectangle trigger board being movably set on limit plate, and the one end of trigger board along its length is rotated coaxially with limit plate
Connection, the other end are extended away from inserted link, and trigger board is horizontally disposed under original state and its short transverse is parallel to guiding
The axial direction of column one, constraint card slot one form constraint foot away from inserted link side, and trigger board is opened up along the upper surface of its short transverse
There is the constraint card slot two to match with constraint foot, constraint foot is arranged in constraint card slot two under original state；
It is provided with the installation protrusion being fixedly connected with vertical plate below the trigger board, installs and is fixedly installed on the upper surface of protrusion
It is axially parallel to the support column of guide post one, there are two support column is set side by side, being arranged on support column can axially carry out along it
The support plate of sliding, the top of the support column are provided with stop screw, and the external activity of the support column is arranged with support bullet
Spring, support spring one end is contradicted with the conflict of installation protrusion, the other end and support plate and the elastic force of support spring is always by installing
Protrusion is directed toward support plate, and the medium position of the trigger board along its length is provided with support protrusion, and support protrusion is located at branch
The top of fagging and the two is inconsistent；
The triggering component further includes being actively located on top plate and being parallel to the axial triggering mandril of guide post one, triggering
Mandril constitutes slide-and-guide cooperation along the axial of guide post one is parallel to top plate, and the bottom end for triggering mandril extends to trigger board and lives
The surface of moved end, and trigger mandril and be in contact with trigger board movable end upper surface, triggering mandril top and push rod top it
Between be movably set with triggering driving lever, trigger driving lever medium position and vertical plate rotation connection cooperation and the rotation axis axial direction hang down
Directly in vertical plate, one end of driving lever is triggered on the top of triggering mandril and the two is bonded to each other, triggers the other end of push rod
On the top of push rod and the two is bonded to each other；
During on off mechanism switches to off-state by state because of current overload, when circuital current overload, push rod
Towards cylinder body slide outside and upper top carried out to triggering driving lever, triggering driving lever rotate around the rotation axis of itself and
Triggering mandril is pushed, triggering mandril pushes trigger board and the elastic force effect of support spring is overcome to turn downwards around its rotation axis
It moves, constraint foot and constraint card slot two are detached from and constrain constraint of the releasing of card slot two to constraint foot, at this point, the rotation of constraint piece is about
Beam will be released from, and the constraint of constraint card slot a pair of constraint protrusion will release, at this point, the rotational restraint of limit plate will be released from, limit
Position structure will release the constraint of inserted link, discharge between the elastic potential energy of reset spring two and push sliding panel along guide post two
It sliding straight up, contact two will be separated with contact one, push component and switch to floating state, and connecting elements disconnects, at this point,
On off mechanism switches to off-state by state, cuts off between firewire input pin and firewire output pin, plays pair
The function of circuital current overload protection；
(3) reseting stage；
S4: when user excludes electrical equipment/circuit failure, manually by off mechanism by the switching-on shape of off-state
State, circuit restore to operate normally；
In reseting procedure of the on off mechanism by the switching-on state of off-state, when user will lead to the event of circuital current overload
After barrier excludes, after the internal slide that circuital current restores normal and push rod towards cylinder body resets, user's Manual press down-pressed pole,
Down-pressed pole overcomes the elastic force of reset spring two to act on towards bottom plate sliding, and sliding panel will move synchronously and make contact two and contact
One is inconsistent, in the process, down-pressed pole by push limit plate rotation reset and support spring elastic force push trigger board around
Its rotation axis be rotated up reset, limit structure restores the constraint to inserted link, and constraint card slot two restores the constraint to constraint foot, about
Beam card slot one restores the constraint to constraint protrusion, and interface components reset switches to pressed status and connects connecting elements, leads to
The switching-on state of breaking mechanism, circuit restore to operate normally.
Further optimize or improve as this programme.
The top plate, which is provided with to be located at right above triggering mandril top, pushes component manually, and pushing component manually includes living
The dynamic sliding bar for being arranged on bottom plate and being axially parallel to guide post one, sliding bar and top plate are along the axis for being parallel to guide post one
To constitute slide-and-guide cooperation, sliding bar be set side by side there are two and the two top between be provided with for connect the two company
Block is connect, the activity that is fixedly installed on link block passes through insulation crust and extends to external hand push button, the bottom end of the sliding bar
It is provided with stop screw, the external activity of sliding bar is arranged with reset spring three, and three one end of reset spring contradicts with top plate, is another
End is contradicted with link block and the elastic force of reset spring three is directed toward link block by top plate always, and the triggering driving lever deviates from push rod one
End be located at link block and triggering mandril between and with both movable contacts.
Further optimize or improve as this programme.
The protective device further includes the indicator light being embedded on insulation crust, and indicator light one end and firewire input pin connect
It connects, the other end is connect by conducting wire with zero curve input pin, the section lead is in an off state and disconnects under original state two
Contact can be attached conducting by the interface components of floating state.
The beneficial effect of the present invention compared with prior art is that clever structure, principle be simple, easy to use, security performance
By force, resistance heating coil is made by current overload, resistance heating coil transfers heat to thermosensitive liquid and expands it rapidly
It pushes piston rod to move out, and on off mechanism is inspired with this and is disconnected automatically, after fault is discharged, manually by off mechanism
Switching-on, circuit restores to operate normally.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is schematic diagram of internal structure of the invention.
Fig. 3 is schematic diagram of internal structure of the invention.
Fig. 4 is schematic diagram of internal structure of the invention.
Fig. 5 is the structural schematic diagram of insulating substrate.
Fig. 6 is the structural schematic diagram of protective device.
Fig. 7 is the structural schematic diagram for thermally expanding mechanism.
Fig. 8 is the schematic diagram of internal structure for thermally expanding mechanism.
Fig. 9 is the partial structural diagram for thermally expanding mechanism.
Figure 10 is the structural schematic diagram for thermally expanding mechanism working condition.
Figure 11 is the structural schematic diagram of on off mechanism.
Figure 12 is the partial structural diagram of on off mechanism.
Figure 13 is the structural schematic diagram of on off mechanism on state.
Figure 14 is the structural schematic diagram of on off mechanism off-state.
Figure 15 is the partial structural diagram of on off mechanism.
Figure 16 is the partial structural diagram of on off mechanism.
Figure 17 is the partial structural diagram of on off mechanism.
Figure 18 is the partial structural diagram of on off mechanism.
Figure 19 is the partial structural diagram of on off mechanism.
Figure 20 is the partial structural diagram of on off mechanism.
Figure 21 is the cooperation figure of on off mechanism and insulation crust.
Figure 22 is the installation diagram of indicator light.
Specific embodiment
A kind of current overload auto-cutout guard method, step are:
(1) the normal operation circuit stage；
S1: on off mechanism 320 is on state, and firewire input pin 110 is by thermal expansion mechanism 310, on off mechanism 320 and fire
Line output pin 120 is connected, and zero curve input pin 130 and zero line output pin 140 are directly connected, and general supply connects with electrical equipment
Logical, circuit is in normal operating condition；
(2) overload automatically cuts off the stage；
S2: when chance failure occurs in electrical equipment/circuit, and circuital current is caused to overload, thermal expansion mechanism 320 detects overload
Electric current and expand push on off mechanism 320；
The thermal expansion mechanism 310 includes the mounting plate 311 being fixedly connected with insulating substrate 100,311 place plane of mounting plate
It is parallel to insulating substrate 100, mounting plate 311 is provided with the cylinder for being axially perpendicular to mounting plate 311 away from 100 1 end face of insulating substrate
Body 312 is sealedly and fixedly connected between mounting plate 311 and cylinder body 312, be provided in cylinder body 312 with its constitute it is sealed sliding lead
To the piston 313 of cooperation, cylinder body 312 offers opening away from 311 one end of mounting plate, has been coaxially arranged with opening on piston 313
Extend to external push rod 314；
The resistance heating coil 315 being fixedly connected with mounting plate 311 is provided in the cylinder body 312, resistance heating coil 315 is provided with
Binding post 1, the binding post 2 317 connected with it, binding post 1 connect with firewire input pin 110, binding post two
317 connect on off mechanism 320, and sealing inner cavity 318 is provided between resistance heating coil 315 and piston 313 and seals inner cavity
Thermosensitive liquid is filled in 318；
The reset spring one being movably set in outside push rod 314, one one end of reset spring and cylinder body 312 are provided in cylinder body 312
It is contradicted away from the conflict of installation 311 one end of version, the other end and piston 313 and the elastic force of reset spring one is carried on the back by cylinder body 312 always
Piston 313 is directed toward from 311 one end of mounting plate；
If circuital current overloads, resistance heating coil 315 heats thermosensitive liquid, and thermosensitive liquid expands and makes push rod
314 towards cylinder body 312 external movement, push rod 314 pushes on off mechanism 320；
S3: push rod 314 pushes on off mechanism 320 and on off mechanism 320 is made to switch to off-state by state, and firewire is defeated
Enter pin 110 and firewire output pin 120 disconnects, circuit automatically cuts off carry out self-protection；
The on off mechanism 320 include connecting elements, interface components, limit component, triggering component, connecting elements disconnect and
One end is connect with binding post 2 317, the other end and firewire output contact 120 connect, and interface components are used to be connected the connection disconnected
Component, interface components are arranged to mutually switch between pressed status and floating state and push shape under original state
Connecting elements is connected the interface components of state, pressed status, and limit component is used to interface components constraining in pressed status, triggers
Component receives the constraint for pushing power and be used to release limit component to interface components of push rod 314；
The connecting elements includes that insulating base 321 is fixedly connected with insulating substrate 100, and bottom plate 321 includes strips of conductive plate
324, there are two conductive plate 324 is set side by side, conductive guide post 1, guide post one are fixedly installed on conductive plate 324
325 are axially perpendicular to 100 place plane of insulating substrate, are arranged with contact 1 in guide post 1, contact 1 with lead
Xiang Zhuyi 325 axially constitutes slide-and-guide cooperation along it, and the outer cover of guide post 1 is equipped with buffer spring 327, buffer spring
327 one end and conductive plate 324 contradict, and the other end and contact 1 contradict, and the top of guide post 1 is provided with stop screw,
The conducting wire for connecting the two, another conductive plate 324 and firewire are wherein provided between a conductive plate 324 and binding post 2 317
Output pin 120 connects；
Top plate 322 is provided with above the bottom plate 321, top plate 322 is parallel to each other with vertical plate 321 and is arranged between the two useful
In the vertical plate 323 being supported to top plate 322, the interface components are set between bottom plate 321 and top plate 322, interface components
Including the guide post 2 328 being fixedly installed on bottom plate 321, the axis for being axially parallel to guide post 1 of guide post 2 328
To, there are two guide post 2 328 is set side by side, be arranged with conductive sliding panel 329 in guide post 2 328, sliding panel 329 with lead
Match to column 2 328 and axially constitute slide-and-guide cooperation along it, be provided with along sliding panel 329 with two contacts 1
Opposite contact 2 330 one by one, the outer cover that guide post 2 328 is led in the surface that contact 2 330 is located at contact 1 are equipped with multiple
Position spring 2 331,2 331 one end of reset spring and the conflict of bottom plate 321, the other end and the conflict of sliding panel 329 and reset spring
2 331 elastic force is directed toward sliding panel 329 by bottom plate 321 always, and the top of the guide post 2 328 is provided with stop screw；
It is movably set on the top plate 322 and is parallel to the axial insulation down-pressed pole 332 of guide post 1, down-pressed pole 332 and top
Plate 322 constitutes slide-and-guide cooperation along the axial of guide post 1 is parallel to, and the bottom end sliding sleeve of down-pressed pole 332 is set to guiding
It can be slided on column 2 328 and along its axially direction is parallel to, the bottom end of down-pressed pole 332 and sliding panel 329 contradict, under
The top activity of compression bar 332 passes through the outside of insulation crust 200, radially fixes to wear being parallel to stand on down-pressed pole 332
The inserted link 333 of plate 323, inserted link 333 is close to the bottom of down-pressed pole 332 arrangement and between bottom plate 321 and top plate 322, limit
Position component is for limiting inserted link 333, and under original state, down-pressed pole 333 overcomes under the elastic reaction of reset spring 2 331
It contradicts contact 2 330 with contact 1 to dock, and operation of the limit component to inserted link 333 close to top plate 323 constrains
Limitation；
The limit component includes that the axial direction of the circular limit plate 334 and the rotation axis that are rotatably dispose on vertical plate 323 is hung down
Directly in vertical plate 323, limit plate 334 opened up on 333 side periphery of inserted link it is jagged, formd at the top of notch for pair
It positive stop hook 334a that inserted link 333 is constrained and limits structure 334a and takes the upper surface for being lining in inserted link 333, the bottom of notch is formed
It resets convex block 334b and resets the underface that convex block 334b extends to down-pressed pole 332, the limit plate 334 deviates from vertical plate
Cylindricality the constraint protrusion 334c, constraint protrusion 334c that fixed setting is parallel to that it is axially arranged on 323 1 end faces are located at limit
The edge of plate 334 and the close arrangement of top plate 322；
The limit component further includes the ellipse constraint piece 335 being set between limit plate 334 and top plate 322, constrains piece
335 one end are rotatably dispose on vertical plate 323 and the rotation axis is axially perpendicular to vertical plate 323, and the other end of constraint piece 335 opens
Equipped with constraint one 335a of card slot, constraint protrusion 334c, which matches with constraint one 335a of card slot and constrains raised 334c, to be arranged in about
In one 335a of beam card slot；
The triggering component is used to carry out constraining and capable of releasing the rotation to constraint piece 335 to the rotation of constraint piece 335 about
Beam, triggering component include the rectangle trigger board 336 being movably set on limit plate 334, the one end of trigger board 336 along its length
It rotates coaxially connection, the other end with limit plate 334 to be extended away from inserted link 333, trigger board 336 is horizontally disposed under original state
And its short transverse is parallel to the axial direction of guide post 1, and constraint one 335a of card slot forms constraint away from 333 side of inserted link
Foot 335b, trigger board 336 offer two 336a of constraint card slot to match with constraint foot 335b along the upper surface of its short transverse,
Foot 335b is constrained under original state to be arranged in constraint two 336a of card slot；
It is provided with the installation protrusion being fixedly connected with vertical plate 323 below the trigger board 336, installs fixed on the upper surface of protrusion
It is provided with the support column 337 for being axially parallel to guide post 1, there are two support column 337 is set side by side, is covered on support column 337
Equipped with stop screw, the support can be provided with along the support plate 338 that its axial direction is slided, the top of the support column 338
The external activity of column 337 is arranged with support spring 339,339 one end of support spring and the conflict of installation protrusion, the other end and support plate
The elastic force of 338 conflicts and support spring 339 is directed toward support plate 338 by installation protrusion always, and the trigger board 336 is along its length
The medium position in direction is provided with support protrusion 336b, and support protrusion 336 is located at the top of support plate 338 and the two offsets
Touching；
The triggering component further includes being actively located on top plate 322 and being parallel to the axial triggering top of guide post 1
Bar 340, triggering mandril 340 and top plate 323 constitute slide-and-guide cooperation along the axial of guide post 1 is parallel to, and trigger mandril
340 bottom end extends to the surface of 336 movable end of trigger board, and triggers mandril 340 and 336 movable end upper surface of trigger board
It is in contact, triggers and be movably set with triggering driving lever 342 between 340 top of mandril and 314 top of push rod, trigger in driving lever 342
Portion position and the rotation connection of vertical plate 323 cooperation and the rotation axis are axially perpendicular to vertical plate 323, trigger one end of driving lever 342
On the top of triggering mandril 340 and the two is bonded to each other, triggers the other end of push rod 342 and is located at the top of push rod 314
Upper and the two is bonded to each other；
During on off mechanism 320 switches to off-state by state because of current overload, when circuital current overload, push away
Bar 314 towards cylinder body 312 slide outside and upper top carried out to triggering driving lever 341, rotation of the triggering driving lever 341 around itself
Axis rotates and pushes to triggering mandril 340, and triggering mandril 340 pushes trigger board 336 and overcomes support spring 339
Elastic force effect is rotated down around its rotation axis, and constraint foot 335b and constraint two 336a of card slot are detached from and constrain two 336a of card slot
The constraint to constraint foot 335b is released, at this point, the rotational restraint of constraint piece 335 will be released from, constrains one 335a of card slot to constraint
The constraint of raised 334c will release, at this point, the rotational restraint of limit plate 334 will be released from, pact of the limit structure 334a to inserted link 333
Beam will release, and discharge between the elastic potential energy of reset spring 2 331 and push sliding panel 329 vertical along guide post 2 328
Upward sliding, contact 2 330 will be separated with contact 1, push component and switch to floating state, and connecting elements disconnects, this
When, on off mechanism 320 switches to off-state by state, cuts between firewire input pin 110 and firewire output pin 120
It is disconnected, play the function to circuital current overload protection；
(3) reseting stage；
S4: manually that on off mechanism 320 is switching-on by off-state when user excludes electrical equipment/circuit failure
State, circuit restore to operate normally；
In reseting procedure of the on off mechanism 320 by the switching-on state of off-state, when user will lead to circuital current overload
Troubleshooting after, after the internal slide that circuital current restores normal and push rod 314 towards cylinder body 312 resets, user is manual
Down-pressed pole 332 is pressed, down-pressed pole 332 overcomes the elastic force of reset spring 2 331 to act on towards the sliding of bottom plate 321, and sliding panel 329 will
Move synchronously and make contact 2 330 and contact 1 inconsistent, in the process, down-pressed pole 332 will push limit plate 334
Rotation resets and the elastic force of support spring 339 pushes trigger board 336 to be rotated up reset around its rotation axis, limits structure 334a
Constraint of the recovery to inserted link 333, constraint two 336a of card slot restore the constraint to constraint foot 335b, constraint one 335a of card slot recovery pair
The constraint of protrusion 334c is constrained, interface components reset switches to pressed status and connects connecting elements, and on off mechanism 320 is cut
On state is shifted to, circuit restores to operate normally.
A kind of current overload auto-cutout protector comprising rectangular dielectric substrate 100,100 one end of insulating substrate are exposed
Firewire input pin 110, the zero curve input pin 130 positioned at left side positioned at right side are provided with, outside 100 other end of insulating substrate
Dew is provided with firewire output pin 120, zero line output pin 140, and zero curve input pin 130 is with zero line output pin 140 by leading
Line connection, has been arranged in series protective device 300, protective device 300 between firewire input pin 110 and firewire output pin 120
Thermal expansion mechanism 310, on off mechanism 320 including series connection, on off mechanism 320 is arranged to can be in off-state and conducting shape
Mutually switch between state and be on state under original state, thermal expansion mechanism 310 is for detecting overload current and controlling
On off mechanism 320 switches to off-state by state.
Firewire input pin 110, zero curve input pin 130 are correspondingly connected with general supply, firewire output pin 120, zero curve
Output pin 140 is correspondingly connected with electrical equipment.
Specifically, in order to avoid firewire inputs touching pin 110, firewire output pin 120, zero curve input pin 130, zero curve
Output pin 140 is protected, its exposed electric leakage is avoided, and is provided on the insulating substrate 100 and is constituted clamp-close type with it and connect
The insulation crust 200 of cooperation, protective device 300 is between insulating substrate 100 and insulation crust 200.
In use, under original state, on off mechanism 320 is on state to user, and firewire input pin 110 passes through
Mechanism 310, on off mechanism 320 and firewire output pin 120 is thermally expanded to connect, at this point, general supply and electrical equipment are connected, circuit
In normal operating condition；When chance failure occurs in electrical equipment/circuit, and circuital current is caused to overload, mechanism 320 is thermally expanded
It detects overload current and expands and push on off mechanism 320, on off mechanism 320 is made to switch to off-state by state,
At this point, firewire input pin 110 and firewire output pin 120 disconnect, that realizes circuit automatically cuts off defencive function, when user arranges
When except electrical equipment/circuit failure, manually by off mechanism 320 by the switching-on state of off-state, circuit restores just
Often operation.
In order to make general supply separate the mutually independent route of multichannel, the firewire output pin 120 is set side by side with
Multiple, the zero line output pin 140 is set side by side with multiple, 140 1 a pair of firewire output pin 120 and zero line output pin
Arrangement is answered and alternateed, the meaning of this programme is taken to be that structure is simple, it is mutually indepedent multichannel can be separated by general supply
Electric wire route, improve the practicality.
The thermal expansion mechanism 310 includes the mounting plate 311 being fixedly connected with insulating substrate 100,311 place of mounting plate
Plane is parallel to insulating substrate 100, and mounting plate 311 is provided with away from 100 1 end face of insulating substrate and is axially perpendicular to mounting plate 311
Cylinder body 312, be sealedly and fixedly connected between mounting plate 311 and cylinder body 312, be provided in cylinder body 312 and constitute sealed cunning with it
The piston 313 of action-oriented cooperation, cylinder body 312 offer opening away from 311 one end of mounting plate, have been coaxially arranged on piston 313
Opening extends to external push rod 314, is moved out by push rod 314 and is pushed on off mechanism 320, and makes on-off machine
Structure 320 switches to off-state.
Specifically, being provided with the resistance heating coil 315 being fixedly connected with mounting plate 311, resistance heating in the cylinder body 312
Disk 315 is provided with the binding post 1 connected with it, binding post 2 317, and binding post 1 and firewire input pin 110 connect
Connect, binding post 2 317 is connect on off mechanism 320, be provided between resistance heating coil 315 and piston 313 sealing inner cavity 318 simultaneously
And it is filled with thermosensitive liquid in sealing inner cavity 318, if circuital current overloads, thermosensitive liquid is carried out by resistance heating coil 315
Heat treatment, thermosensitive liquid expand and make push rod 314 towards the external movement of cylinder body 312.
More specifically, it for the ease of the reset of push rod 314, is provided with and is movably set in outside push rod 314 in cylinder body 312
Reset spring one, one one end of reset spring and cylinder body 312 are contradicted away from installation 311 one end of version, the other end and piston 313 contradict
And the elastic force of reset spring one is directed toward piston 313 away from 311 one end of mounting plate by cylinder body 312 always.
More specifically, when circuit current restores normal and heating resistor disk 315 stops heating thermosensitive liquid, if desired
Enable 314 Rapid reset of push rod, need that thermosensitive liquid is made to radiate in a short time and restore normal volume, for this purpose, described
The outer, coaxial of cylinder body 312 is arranged with annular fin 319, and the meaning of this programme is taken to be that structure is simple, can make temperature-sensitive
Liquid rapid cooling, convenient for thermally expanding the rapid reset of mechanism 310.
The on off mechanism 320 includes connecting elements, interface components, limit component, triggering component, and connecting elements disconnects
And one end is connect with binding post 2 317, the other end and firewire output contact 120 connect, and interface components are used to be connected disconnection
Connecting elements, interface components are arranged to mutually switch between pressed status and floating state and push under original state
Connecting elements is connected the interface components of state, pressed status, and limit component is used to interface components constraining in pressed status, touches
Hair component receives the constraint for pushing power and be used to release limit component to interface components of push rod 314.
Specifically, the connecting elements includes being fixedly connected with insulating base 321 with insulating substrate 100, bottom plate 321 includes
Strips of conductive plate 324 there are two conductive plate 324 is set side by side, is fixedly installed on conductive guide post 1 on conductive plate 324,
Guide post 1 is axially perpendicular to 100 place plane of insulating substrate, is arranged with contact 1, contact in guide post 1
One 326 axially constitute slide-and-guide cooperation along it with guide post 1, and the outer cover of guide post 1 is equipped with buffer spring
327,327 one end of buffer spring and conductive plate 324 contradict, and the other end and contact 1 contradict, in order to avoid contact with 326 and
The top of the phenomenon that guide post 1 is fallen off, the guide post 1 is provided with stop screw.
More specifically, wherein being provided with the conducting wire for connecting the two between a conductive plate 324 and binding post 2 317,
Another conductive plate 324 is connect with firewire output pin 120, by being electrically connected two contacts 1, realizes connecting elements
It connects.
In order to connect two contacts 1, be provided with top plate 322 above the bottom plate 321, top plate 322 with
Vertical plate 321 is parallel to each other and is provided with the vertical plate 323 for being supported to top plate 322, the interface components between the two
It is set between bottom plate 321 and top plate 322, interface components include the guide post 2 328 being fixedly installed on bottom plate 321, guiding
The axial direction for being axially parallel to guide post 1 of column 2 328, there are two guide post 2 328 is set side by side, in guide post 2 328
It is arranged with conductive sliding panel 329, sliding panel 329, which matches with guide post 2 328 and axially constitutes slide-and-guide along it, matches
It closes, is provided on sliding panel 329 and opposite contact 2 330, contact 2 330 are located at contact 1 one by one with two contacts 1
Surface lead guide post 2 328 outer cover be equipped with reset spring 2 331,2 331 one end of reset spring is supported with bottom plate 321
Touching, the other end and sliding panel 329 contradict and the elastic force of reset spring 2 331 is directed toward sliding panel 329 by bottom plate 321 always, are
It avoiding falling off between sliding panel 329 and guide post 2 328, the top of the guide post 2 328 is provided with stop screw,
By overcoming the elastic force of reset spring 2 331 to act on, sliding panel 329 is pushed, two contacts 2 330 and two contacts one are made
326 is inconsistent, realizes the connection between two contacts 1.
Specifically, in order to drive sliding panel 329 overcome reset spring 2 331 elastic force act under towards contact one
326 slide, and are movably set on the top plate 322 and are parallel to the axial insulation down-pressed pole 332 of guide post 1, down-pressed pole 332
Slide-and-guide cooperation is constituted along the axial of guide post 1 is parallel to top plate 322, the bottom end sliding sleeve of down-pressed pole 332 is set to
It can be slided in guide post 2 328 and along its axially direction is parallel to, bottom end and the sliding panel 329 of down-pressed pole 332 support
Touching, the top activity of down-pressed pole 332 pass through the outside of insulation crust 200, radially fix and be equipped in parallel on down-pressed pole 332
In the inserted link 333 of vertical plate 323, inserted link 333 arrange and be located at close to the bottom of down-pressed pole 332 bottom plate 321 and top plate 322 it
Between, limit component is for limiting inserted link 333, and under original state, down-pressed pole 333 overcomes the elasticity of reset spring 2 331
Contradict contact 2 330 and contact 1 under effect to dock, and limit component to inserted link 333 close to top plate 323 operation into
Row restrict realizes that interface components are constrained in pressed status by limit component.
In order to enable limit component restrict inserted link 333 to move close to top plate 322, the limit component includes turning
The dynamic circular limit plate 334 being set on vertical plate 323 and the rotation axis are axially perpendicular to vertical plate 323, and limit plate 334 is close
It opens up jagged on 333 side periphery of inserted link, the positive stop hook for being constrained inserted link 333 is formd at the top of notch
It 334a and limits structure 334a and takes the upper surface for being lining in inserted link 333, the bottom of notch, which forms, to be resetted convex block 334b and reset
Convex block 334b extends to the underface of down-pressed pole 332, in order to enable limit component 334a to carry out effectively about inserted link 333
Beam, the rotation for the limit plate 334 that needs restraint, for this purpose, the limit plate 334 be fixedly installed on 323 1 end face of vertical plate it is flat
Row constrains protrusion 334c in its cylindricality axially arranged, constraint protrusion 334c is located at the edge of limit plate 334 and close to top
Plate 322 is arranged, by the constraint to constraint protrusion 334c, realizes the rotational restraint to limit plate 334.
Specifically, the limit component further includes being set to limit in order to constrain constraint protrusion 334c
Ellipse constraint piece 335 between plate 334 and top plate 322, constraint 335 one end of piece is rotatably dispose on vertical plate 323 and this turn
Moving axis is axially perpendicular to vertical plate 323, and the other end of constraint piece 335 offers constraint one 335a of card slot, constrain protrusion 334c and
Constraint one 335a of card slot, which matches and constrains raised 334c, to be arranged in constraint one 335a of card slot, in order to make to constrain card slot
One 335a can constrain constraint protrusion 334c, and the rotation to constraint piece 335 is needed to constrain.
The triggering component, which is used to carry out constraining and capable of releasing to the rotation of constraint piece 335, turns constraint piece 335
Moving constraint, triggering component include the rectangle trigger board 336 being movably set on limit plate 334, and trigger board 336 is along its length
One end rotates coaxially connection, the other end with limit plate 334 and is extended away from inserted link 333, and trigger board 336 is horizontal under original state
Arrangement and its short transverse are parallel to the axial direction of guide post 1, constrain in order to the rotation to constraint piece 335,
Constraint one 335a of card slot forms constraint foot 335b away from 333 side of inserted link, and trigger board 336 is opened along the upper surface of its short transverse
Equipped with two 336a of constraint card slot to match with constraint foot 335b, constraint foot 335b is arranged in constraint card slot two under original state
In 336a.
Specifically, needing to make trigger board if constraint two 336a of card slot is enable effectively to constrain constraint foot 335b
336 keep horizontal, for this purpose, being provided with the installation protrusion being fixedly connected with vertical plate 323, installation protrusion below the trigger board 336
Upper surface on be fixedly installed the support column 337 for being axially parallel to guide post 1, there are two support column 337 is set side by side,
Be arranged on support column 337 can along the support plate 338 that its axial direction is slided, in order to avoid support plate 338 and support column 337 it
Between fall off, the top of the support column 338 is provided with stop screw, and the external activity of the support column 337 is arranged with branch
It supports spring 339,339 one end of support spring and the conflict of installation protrusion, the other end and support plate 338 contradicts and support spring 339
Elastic force support plate 338 is directed toward by installation protrusion always, the medium position of the trigger board 336 along its length is provided with branch
Protrusion 336b is supportted, support protrusion 336 is located at the top of support plate 338 and the two is inconsistent, convex by 338 pairs of supports of support plate
The support for playing 336 keeps 334 holding of trigger board horizontal.
More specifically, in order to enable triggering component to contact the constraint to constraint piece 335, the triggering component is also wrapped
It includes and is actively located on top plate 322 and is parallel to the axial triggering mandril 340 of guide post 1, trigger mandril 340 and top plate
323 constitute slide-and-guide cooperation along the axial of guide post 1 is parallel to, and the bottom end of triggering mandril 340 extends to trigger board 336
The surface of movable end, and trigger mandril 340 and be in contact with 336 movable end upper surface of trigger board, triggering 340 top of mandril with
Triggering driving lever 342 is movably set between 314 top of push rod, the medium position and the rotation connection of vertical plate 323 for triggering driving lever 342 are matched
Merge and the rotation axis is axially perpendicular to vertical plate 323, one end of triggering driving lever 342 is located on the top of triggering mandril 340 simultaneously
And the two is bonded to each other, triggers the other end of push rod 342 and is located on the top of push rod 314 and the two is bonded to each other.
During on off mechanism 320 switches to off-state by state because of current overload, when circuital current overloads
When, push rod 314 towards cylinder body 312 slide outside and upper top carried out to triggering driving lever 341, trigger driving lever 341 around itself
Rotation axis rotate and triggering mandril 340 pushed, triggering mandril 340 pushes trigger board 336 and overcomes support bullet
The elastic force effect of spring 339 is rotated down around its rotation axis, and constraint foot 335b and constraint two 336a of card slot are detached from and constrain card
Two 336a of slot releases the constraint to constraint foot 335b, at this point, the rotational restraint of constraint piece 335 will be released from, constrains card slot one
335a will release the constraint of constraint protrusion 334c, at this point, the rotational restraint of limit plate 334 will be released from, limit 334a pairs of structure
The constraint of inserted link 333 will release, and discharge between the elastic potential energy of reset spring 2 331 and push sliding panel 329 along guiding
Column 2 328 slides straight up, and contact 2 330 will be separated with contact 1, pushes component and switches to floating state, connects
Component disconnects, at this point, on off mechanism 320 switches to off-state by state, firewire input pin 110 draws with firewire output
It is cut off between foot 120, plays the function to circuital current overload protection.
In reseting procedure of the on off mechanism 320 by the switching-on state of off-state, when user will lead to circuital current
After the troubleshooting of overload, after the internal slide that circuital current restores normal and push rod 314 towards cylinder body 312 resets, user
Manual press down-pressed pole 332, down-pressed pole 332 overcome the elastic force of reset spring 2 331 to act on towards the sliding of bottom plate 321, sliding panel
329 will move synchronously and make contact 2 330 and contact 1 inconsistent, and in the process, down-pressed pole 332 will be pushed and be limited
The rotation of plate 334 resets and the elastic force of support spring 339 pushes trigger board 336 to be rotated up reset around its rotation axis, limits
Structure 334a restores the constraint to inserted link 333, and constraint two 336a of card slot restores the constraint to constraint foot 335b, constrains one 335a of card slot
Restore the constraint to constraint protrusion 334c, interface components reset switches to pressed status and connects connecting elements, on-off machine
The switching-on state of structure 320, circuit restore to operate normally.
It is needed as the scheme that the present invention more optimizes when user needs to carry out repair and maintenance to electrical equipment/circuit
Entire circuit where electrical equipment is cut off, therefore, it is necessary to so that electrical conduction mechanism 320 is cut by the manual manipulation of user
Off-state is shifted to, for this purpose, the top plate 322 is provided with to be located at right above triggering 340 top of mandril pushes component, hand manually
Moving and pushing component includes the sliding bar 342 for being actively located on bottom plate 323 and being axially parallel to guide post 1, sliding bar
342 constitute slide-and-guide cooperation along the axial of guide post 1 is parallel to top plate 322, there are two sliding bar 342 is set side by side
And the link block 343 for connecting the two is provided between the two top, the activity that is fixedly installed on link block 343 passes through exhausted
Edge shell 200 extends to external hand push button 344, described in order to avoid falling off between sliding bar 342 and top plate 322
The bottom end of sliding bar 342 is provided with stop screw, and the external activity of sliding bar 342 is arranged with reset spring 3 345, reset spring
3 345 one end and the conflict of top plate 322, the other end and link block 343 contradict and the elastic force of reset spring 3 345 is always by top plate
322 are directed toward link block 343, and in order to push triggering mandril 340 to slide straight down, the triggering driving lever 341 deviates from push rod
314 one end be located at link block 343 and triggering mandril 340 between and with both movable contacts, pressed by hand push button 344
Triggering mandril 340 is pushed, on off mechanism 320 is made to switch to off-state.
The scheme more perfect as the present invention, is in for the ease of the more intuitive determining on off mechanism 320 of user and leads
Logical state/off-state, the protective device 300 further includes the indicator light 350 being embedded on insulation crust 200, indicator light 350
One end is connect with firewire input pin 110, the other end is connect by conducting wire with zero curve input pin 130, and the section is led under original state
Line is in an off state and two contacts disconnected can be attached conducting by the interface components of floating state, takes this programme
Meaning be that when normal operation circuit, indicator light 350 is closed, when current overload and on off mechanism 320 is made to switch to disconnection
When state, the interface components of floating state will be such that indicator light connects with line input pin 110, and indicator light 350 is opened, and remind user
On off mechanism 320 is in an off state.
Claims (10)
1. a kind of current overload auto-cutout guard method, step are:
(1) the normal operation circuit stage；
S1: on off mechanism is on state, and firewire input pin connects by thermal expansion mechanism, on off mechanism and firewire output pin
Logical, zero curve input pin is directly connected with zero line output pin, and general supply and electrical equipment are connected, and circuit, which is in, operates normally shape
State；
(2) overload automatically cuts off the stage；
S2: when chance failure occurs in electrical equipment/circuit, and circuital current is caused to overload, thermal expansion mechanism detects overload current
And it expands and pushes on off mechanism；
The thermal expansion mechanism includes the mounting plate being fixedly connected with insulating substrate, and plane where mounting plate is parallel to insulation base
Plate, mounting plate are provided with the cylinder body for being axially perpendicular to mounting plate away from one end face of insulating substrate, seal between mounting plate and cylinder body
It is fixedly connected, the piston for constituting sealed slide-and-guide cooperation with it is provided in cylinder body, cylinder body is opened up away from mounting plate one end
There is opening, the open push rod for extending to outside is coaxially arranged on piston；
The resistance heating coil being fixedly connected with mounting plate is provided in the cylinder body, resistance heating coil is provided with to be connect with what it was connected
Terminal one, binding post two, binding post one is connect with firewire input pin, binding post two is connect on off mechanism, resistance heating coil
It is intracavitary in being provided with sealing inner cavity between piston and sealing to be filled with thermosensitive liquid；
The reset spring one being movably set in outside push rod, one one end of reset spring and cylinder body are provided in cylinder body away from installation version
One end conflict, the other end and piston contradict and the elastic force of reset spring one is directed toward away from mounting plate one end by cylinder body lives always
Plug；
If circuital current overloads, resistance heating coil heats thermosensitive liquid, and thermosensitive liquid expands and makes push rod court
To the external movement of cylinder body, push rod pushes on off mechanism；
S3: push rod pushes on off mechanism and on off mechanism is made to switch to off-state by state, firewire input pin with
Firewire output pin disconnects, and circuit automatically cuts off carry out self-protection；
The on off mechanism includes connecting elements, interface components, limit component, triggering component, connecting elements disconnection and one
End is connect with binding post two, the other end and firewire output contact connect, and interface components are used to be connected the connecting elements disconnected, linking
Component be arranged to can between pressed status and floating state mutually under switching and original state for pressed status, pressed status
Interface components connecting elements is connected, limit component is used to interface components constraining in pressed status, and triggering component receiving pushes away
Bar pushes power and the constraint for releasing limit component to interface components；
The connecting elements includes that insulating base is fixedly connected with insulating substrate, and bottom plate includes strips of conductive plate, and conductive plate is simultaneously
There are two column settings, and conductive guide post one is fixedly installed on conductive plate, and guide post one is axially perpendicular to insulating substrate institute
It is arranged with contact one, contact one and guide post one in plane, guide post one and axially constitutes slide-and-guide cooperation, guide post along it
One outer cover is equipped with buffer spring, and buffer spring one end and conductive plate contradict, and the other end and contact one contradict, guide post one
Top is provided with stop screw, wherein the conducting wire for connecting the two is provided between a conductive plate and binding post two, it is another to lead
Battery plate is connect with firewire output pin；
During on off mechanism switches to off-state by state because of current overload, when circuital current overload, push rod
Towards cylinder body slide outside and upper top carried out to triggering driving lever, triggering driving lever rotate around the rotation axis of itself and
Triggering mandril is pushed, triggering mandril pushes trigger board and the elastic force effect of support spring is overcome to turn downwards around its rotation axis
It moves, constraint foot and constraint card slot two are detached from and constrain constraint of the releasing of card slot two to constraint foot, at this point, the rotation of constraint piece is about
Beam will be released from, and the constraint of constraint card slot a pair of constraint protrusion will release, at this point, the rotational restraint of limit plate will be released from, limit
Position structure will release the constraint of inserted link, discharge between the elastic potential energy of reset spring two and push sliding panel along guide post two
It sliding straight up, contact two will be separated with contact one, push component and switch to floating state, and connecting elements disconnects, at this point,
On off mechanism switches to off-state by state, cuts off between firewire input pin and firewire output pin, plays pair
The function of circuital current overload protection；
(3) reseting stage；
S4: when user excludes electrical equipment/circuit failure, manually by off mechanism by the switching-on shape of off-state
State, circuit restore to operate normally；
In reseting procedure of the on off mechanism by the switching-on state of off-state, when user will lead to the event of circuital current overload
After barrier excludes, after the internal slide that circuital current restores normal and push rod towards cylinder body resets, user's Manual press down-pressed pole,
Down-pressed pole overcomes the elastic force of reset spring two to act on towards bottom plate sliding, and sliding panel will move synchronously and make contact two and contact
One is inconsistent, in the process, down-pressed pole by push limit plate rotation reset and support spring elastic force push trigger board around
Its rotation axis be rotated up reset, limit structure restores the constraint to inserted link, and constraint card slot two restores the constraint to constraint foot, about
Beam card slot one restores the constraint to constraint protrusion, and interface components reset switches to pressed status and connects connecting elements, leads to
The switching-on state of breaking mechanism, circuit restore to operate normally.
2. a kind of current overload auto-cutout guard method according to claim 1, the limit component further includes setting
The ellipse constraint piece being placed between limit plate and top plate, constraint piece one end is rotatably dispose on vertical plate and the axis of the rotation axis
Constraint card slot one is offered to the other end for perpendicular to vertical plate, constraining piece, and constraint protrusion matches and about with constraint card slot one
Beam protrusion is arranged in constraint card slot one.
3. a kind of current overload auto-cutout guard method according to claim 2, the triggering component is used for constraint
The rotation of piece carries out constraining and capable of releasing the rotational restraint to constraint piece, and triggering component includes being movably set on limit plate
Rectangle trigger board, the one end of trigger board along its length and limit plate rotate coaxially connection, the other end is prolonged away from inserted link
It stretches, trigger board is horizontally disposed under original state and its short transverse is parallel to the axial direction of guide post one, and constraint card slot one deviates from
Inserted link side forms constraint foot, and trigger board offers the constraint card slot to match with constraint foot along the upper surface of its short transverse
Two, constraint foot is arranged in constraint card slot two under original state.
4. a kind of current overload auto-cutout guard method according to claim 3, be provided with below the trigger board with
The installation protrusion that vertical plate is fixedly connected, installs and is fixedly installed the support for being axially parallel to guide post one on the upper surface of protrusion
Column, there are two support column is set side by side, be arranged on support column can along the support plate that its axial direction is slided, the support column
Top is provided with stop screw, and the external activity of the support column is arranged with support spring, support spring one end and installation protrusion
Conflict, the other end and support plate contradict and the elastic force of support spring is directed toward support plate, the trigger board by installation protrusion always
Medium position along its length is provided with support protrusion, and support protrusion is located at the top of support plate and the two is inconsistent.
5. a kind of current overload auto-cutout guard method according to claim 4, the triggering component further includes living
Dynamic to be arranged on top plate and be parallel to the axial triggering mandril of guide post one, triggering mandril and top plate edge are parallel to guide post one
It is axial constitute slide-and-guide cooperation, the bottom end for triggering mandril extends to the surface of trigger board movable end, and triggers mandril
It is in contact with trigger board movable end upper surface, triggers and be movably set with triggering driving lever between mandril top and push rod top, trigger
The medium position of driving lever and vertical plate rotation connection cooperation and the rotation axis are axially perpendicular to vertical plate, trigger one end position of driving lever
In on the top of triggering mandril and the two is bonded to each other, triggers on the top that the other end of push rod is located at push rod and the two phase
Mutually fitting.
6. a kind of current overload auto-cutout guard method according to claim 5, the bottom plate top is provided with top plate,
Top plate and vertical plate are parallel to each other and are provided with the vertical plate for being supported to top plate, the interface components setting between the two
Between bottom plate and top plate, interface components include the guide post two being fixedly installed on bottom plate, and guide post two is axially parallel to
The axial direction of guide post one there are two guide post two is set side by side, is arranged with conductive sliding panel in guide post two, sliding panel with lead
Match to column two and axially constitute slide-and-guide cooperation along it, is provided on sliding panel and opposite one by one with two contacts one
Contact two, the outer cover that guide post two is led in the surface that contact two is located at contact one are equipped with reset spring two, reset spring 21
End is contradicted with bottom plate conflict, the other end and sliding panel and the elastic force of reset spring two is directed toward sliding panel by bottom plate always, described
The top of guide post two is provided with stop screw.
7. a kind of current overload auto-cutout guard method according to claim 6, it is movably set on the top plate flat
The row insulation down-pressed pole axial in guide post one, down-pressed pole are matched with top plate along the axial slide-and-guide that constitutes for being parallel to guide post one
It closes, the bottom end sliding sleeve of down-pressed pole is set in guide post two and can be slided along its axially direction is parallel to, down-pressed pole
Bottom end and sliding panel contradict, the top activity of down-pressed pole passes through the outside of insulation crust, and radially fixation is worn on down-pressed pole
Equipped with the inserted link for being parallel to vertical plate, inserted link is close to the bottom of down-pressed pole arrangement and between bottom plate and top plate, limit component
For limiting to inserted link, under original state, down-pressed pole, which overcomes, makes contact two and contact under the elastic reaction of reset spring two
One contradicts docking, and operation of the limit component to inserted link close to top plate carries out restrict.
8. a kind of current overload auto-cutout guard method according to claim 7, the limit component includes rotation
The circular limit plate and the rotation axis being set on vertical plate are axially perpendicular to vertical plate, and limit plate is close to inserted link side periphery
On open up jagged, the positive stop hook for being constrained inserted link formd at the top of notch and limits structure and takes be lining in inserted link
Upper surface, the bottom of notch, which forms, to be resetted convex block and resets the underface that convex block extends to down-pressed pole, the limit backboard
It is parallel to its cylindricality constraint protrusion axially arranged from fixed setting on one end face of vertical plate, constraint protrusion is located at the side of limit plate
It is arranged at edge and close to top plate.
9. a kind of current overload auto-cutout guard method according to claim 8, the top plate, which is provided with, is located at triggering
Component is pushed manually right above mandril top, pushing component manually includes being actively located on bottom plate and being axially parallel to lead
The sliding bar of Xiang Zhuyi, sliding bar and top plate constitute slide-and-guide cooperation along the axial of guide post one is parallel to, and sliding bar is arranged side by side
It is provided with the link block for connecting the two there are two being arranged and between the two top, is fixedly installed activity on link block and wears
It crosses insulation crust and extends to external hand push button, the bottom end of the sliding bar is provided with stop screw, and the external of sliding bar lives
It is dynamic to be arranged with reset spring three, three one end of reset spring and top plate conflict, the other end and link block conflict and reset spring three
Elastic force link block is directed toward by top plate always, the triggering driving lever is located at link block away from push rod one end and triggers between mandril simultaneously
And with both movable contacts.
10. a kind of current overload auto-cutout guard method according to claim 1, the protective device further includes being embedded
In the indicator light on insulation crust, indicator light one end is connect with firewire input pin, the other end is by conducting wire and zero curve input pin
Connection, under original state the section lead be in an off state and two contacts that disconnect can by the interface components of floating state into
Row connection conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416132.5A CN110112714B (en) | 2019-05-19 | 2019-05-19 | Automatic circuit breaking protection method for current overload |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416132.5A CN110112714B (en) | 2019-05-19 | 2019-05-19 | Automatic circuit breaking protection method for current overload |
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| CN110112714A true CN110112714A (en) | 2019-08-09 |
| CN110112714B CN110112714B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| DE3631405A1 (en) * | 1986-09-16 | 1988-03-17 | Felten & Guilleaume Energie | Hermetically sealed, permanent-magnet trip device for residual current devices (earth leakage current circuit breakers) |
| WO2005073996A1 (en) * | 2004-01-30 | 2005-08-11 | Danfoss Compressors Gmbh | A bimetal protector |
| CN2817052Y (en) * | 2005-09-13 | 2006-09-13 | 上海良信电器有限公司 | Action mechanism for current leaking breaker |
| CN101162815A (en) * | 2006-10-13 | 2008-04-16 | 黄华道 | Creepage protecting socket |
| CN201210473Y (en) * | 2008-05-20 | 2009-03-18 | 湖北盛佳电器设备有限公司 | Circuit breaker having secondary protection function |
| CN201829431U (en) * | 2010-09-14 | 2011-05-11 | 陈永龙 | Bipolar disconnection non-self-reset thermal circuit breaker |
| CN105720566A (en) * | 2016-02-02 | 2016-06-29 | 章五明 | Short-circuit fault current-limiting protector |
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2019
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| DE3631405A1 (en) * | 1986-09-16 | 1988-03-17 | Felten & Guilleaume Energie | Hermetically sealed, permanent-magnet trip device for residual current devices (earth leakage current circuit breakers) |
| WO2005073996A1 (en) * | 2004-01-30 | 2005-08-11 | Danfoss Compressors Gmbh | A bimetal protector |
| CN2817052Y (en) * | 2005-09-13 | 2006-09-13 | 上海良信电器有限公司 | Action mechanism for current leaking breaker |
| CN101162815A (en) * | 2006-10-13 | 2008-04-16 | 黄华道 | Creepage protecting socket |
| CN201210473Y (en) * | 2008-05-20 | 2009-03-18 | 湖北盛佳电器设备有限公司 | Circuit breaker having secondary protection function |
| CN201829431U (en) * | 2010-09-14 | 2011-05-11 | 陈永龙 | Bipolar disconnection non-self-reset thermal circuit breaker |
| CN105720566A (en) * | 2016-02-02 | 2016-06-29 | 章五明 | Short-circuit fault current-limiting protector |
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| CN110112714B (en) | 2021-06-22 |
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