CN109427515A - A kind of air switch with surge protection function - Google Patents
A kind of air switch with surge protection function Download PDFInfo
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- CN109427515A CN109427515A CN201710725036.XA CN201710725036A CN109427515A CN 109427515 A CN109427515 A CN 109427515A CN 201710725036 A CN201710725036 A CN 201710725036A CN 109427515 A CN109427515 A CN 109427515A
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- Prior art keywords
- air switch
- spring
- contact
- surge protection
- circuit
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- 230000001012 protector Effects 0.000 claims abstract description 17
- 208000025274 Lightning injury Diseases 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 41
- 230000000694 effects Effects 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013003 hot bending Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/0271—Bases, casings, or covers structurally combining a switch and an electronic component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention discloses a kind of air switches with surge protection function, comprising: air switch ontology is electrically connected with input interface and output interface respectively, for disconnecting the circuit when overload or short trouble occur for circuit；And surge protector, it is electrically connected respectively with the air switch ontology and the output interface, for when the circuit has lightning stroke or high-voltage great-current, overvoltage to be diverted to the earth, to protect load.The present invention not only has the function of air switch, but also has surge protection function.
Description
Technical field
The present invention relates to electronic technology field more particularly to a kind of air switches with surge protection function.
Background technique
Air switch also known as air-break circuit-breaker, as long as being that electric current is more than that rated current will disconnect automatically in one kind circuit
Switch.Air switch is very important a kind of electric appliance in low voltage power distribution network and electric drive system.Surge protector is
Indispensable a kind of device in electronic equipment lightning protection, effect is the instantaneous mistake for scurrying into power line, signal transmssion line
Voltage is limited in the voltage range that equipment or system can bear, or powerful lightning current aerial drainage is entered ground, and protection is protected
Equipment or system be not hit and damage.
And air switch in the prior art and surge protector are two mutually independent electrical equipments, i.e., existing sky
Air cock does not have surge protection function, so that lightning stroke or high-voltage great-current are easy to damage electrical equipment.
Summary of the invention
The embodiment of the present invention proposes a kind of air switch with surge protection function, can be both with the function of air switch
Can, and there is surge protection function.
The embodiment of the present invention provides a kind of air switch with surge protection function, comprising:
Air switch ontology, is electrically connected with input interface and output interface respectively, for overload or short circuit to occur in circuit
The circuit is disconnected when failure；And
Surge protector is electrically connected with the air switch ontology and the output interface respectively, in the circuit
When having lightning stroke or high-voltage great-current, overvoltage is diverted to the earth, to protect load.
Further, the air switch ontology includes the first air switch component, the second air switch component and third
Air switch component；The surge protector includes that the first Surge protection components, the second Surge protection components and third surge are protected
Protecting assembly；
One end of the first air switch component is electrically connected the first terminals of the input interface, first air
The other end of switch block is electrically connected first wiring of one end of first Surge protection components, the output interface
End, the other end ground connection of first Surge protection components；
One end of the second air switch component is electrically connected the second terminals of the input interface, second air
The other end of switch block is electrically connected second wiring of one end of second Surge protection components, the output interface
End, the other end ground connection of second Surge protection components；
One end of the third air switch component is electrically connected the third terminals of the input interface, the third air
The other end of switch block is electrically connected the third wiring of one end of the third Surge protection components, the output interface
End, the other end ground connection of the third Surge protection components.
Further, each air switch component include the first spring, main contact, the first tripping mechanism, magnetictrip,
Bimetal leaf and heater element；
One end of first spring is fixed, the other end of first spring and the fixed company of first tripping mechanism
It connects, the switch of the main contact is fixedly connected with first tripping mechanism；The corresponding input in one end of the main contact
The terminals of interface are electrically connected, and the other end of the main contact is electrically connected with one end of the magnetictrip, and the electromagnetism is de-
The other end of button device is electrically connected with one end of the heater element, and the other end of the heater element distinguishes corresponding surge
Protect the terminals electrical connection of component, output interface；The bimetal leaf is arranged close to the heater element, with the hair
Thermal element matches；First tripping mechanism is arranged close to the magnetictrip, the bimetal leaf, with the electricity
Magnetic release, the bimetal leaf match；
It is under normal circumstances in the circuit, the first tripping mechanism engaging, the main contact closure, described first
Spring is in tensional state；
When general overload occurs for the circuit, the heater element generates heat, makes the bimetal leaf by hot bending
Song pushes first tripping mechanism, and first tripping mechanism disengages, and makes the main contact in the elastic force of first spring
Effect is lower to be disconnected；
When short circuit or heavy overload electric current occur for the circuit, the armature in the magnetictrip is attracted, and hits institute
The first tripping mechanism is stated, first tripping mechanism disengages, and the main contact is made to break under the elastic force effect of first spring
It opens.
Further, first tripping mechanism includes the first lock, first has contact with, lever and axis；The lever includes
Cross bar and vertical bar；
One end of the cross bar is fixedly connected with the vertical bar, in the other end of the cross bar and the magnetictrip
Armature is arranged close to；One end of the vertical bar is had contact with described first to be fixedly connected, the other end of the vertical bar and double gold
Belong to piece to be arranged close to；Described first one end having contact with is fixed by the axis, described first other end having contact with it is described
One end of first lock matches, and to be engaged, the other end of first lock is fixedly connected with first spring；Institute
The switch for stating main contact is fixedly connected with first lock；
It is under normal circumstances in the circuit, first lock has contact with described first to be engaged, and the main contact closes
It closes, first spring is in tensional state；
When general overload occurs for the circuit, the heater element generates heat, makes the bimetal leaf by hot bending
Song pushes the vertical bar, and drives described first to have contact with and rotate around the axis, makes described first to have contact with and takes off with first lock
It opens, described first latches in the lower movement of elastic force effect of first spring, and the main contact is disconnected；
When short circuit or heavy overload electric current occur for the circuit, the armature in the magnetictrip is attracted, and hits institute
Cross bar is stated, and drives described first to have contact with by the vertical bar and is rotated around the axis, makes described first to have contact with and first lock
Button disengages, and described first latches in the lower movement of elastic force effect of first spring, and the main contact is disconnected.
Further, each Surge protection components include piezoresistor；
The terminals electrical connection of the corresponding air switch component in one end of the piezoresistor, output interface, institute
State the other end ground connection of piezoresistor；
When the circuit has lightning stroke or high-voltage great-current, overvoltage is diverted to the earth by the piezoresistor short circuit,
Control the voltage on the circuit in a certain range, to protect load.
Further, each Surge protection components further include heat-sensitive sheet, the second tripping mechanism, display lever, second
Spring and third spring；
The wiring that one end of the varistor passes through the heat-sensitive sheet corresponding air switch component, output interface
End electrical connection；One end of the second spring is fixed, the other end of the second spring and the fixed company of second tripping mechanism
It connects；One end of the third spring is fixed, and the other end of the third spring is fixedly connected with the display lever；Described second
Tripping mechanism is arranged close to the heat-sensitive sheet, the display lever；
In the piezoresistor normal use, the second latching device engaging, the second spring is in compression
State, the display lever are shown in green；
In piezoresistor damage, the high current that the circuit generates is bent the heat-sensitive sheet temperature distortion,
Second latching device is pushed, second latching device is disengaged, and is pushed under the effect of the elastic force of the second spring
The display lever is counter to be turn 90 degrees, shown in red, to remind piezoresistor described in user to damage.
Further, second latching device includes that the second lock and second are had contact with；
Described second one end having contact with is equipped with protrusion, and the protrusion is arranged close to the heat-sensitive sheet, and described second has contact with
The other end and it is described second lock one end match, to be engaged；What second lock had contact with close to described second
One end is fixedly connected with the second spring, and the other end of second lock is arranged close to the display lever；
In the piezoresistor normal use, second lock and described second has contact with engaging, second bullet
Spring is in compressive state, and the display lever is shown in green；
In piezoresistor damage, the high current that the circuit generates is bent the heat-sensitive sheet temperature distortion,
It pushes described second to have contact with, so that second lock and described second is had contact with disengagement, and make described second to latch in described second
The elastic force effect of spring is lower to push the display lever is counter to turn 90 degrees, shown in red, to remind piezoresistor described in user
Damage.
Further, the varistor is the pluggable electronic chip being connected in the circuit.
The implementation of the embodiments of the present invention has the following beneficial effects:
Two components of air switch and surge protector can be merged into a component by the embodiment of the present invention, thus
Not only have the function of air switch, but also there is surge protection function, improve the economy used, and reduce equipment fault point, give
Operation and maintenance bring very big convenience, increase safety, reliability；It is small in size using piezoresistor, installation side
Just, air switch space is not influenced；Piezoresistor is connected in circuit using pluggable mode, to replace or to repair
Piezoresistor, it is not necessary to which rewiring does not need to power off yet.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the air switch provided by the invention with surge protection function；
Fig. 2 is the specific structure signal of one embodiment of the air switch provided by the invention with surge protection function
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the structural schematic diagram of one embodiment of the air switch provided by the invention with surge protection function,
Include:
Air switch ontology 1 is electrically connected with input interface 3 and output interface 4 respectively, is used to overload in circuit generation or short
The circuit is disconnected when the failure of road；And
Surge protector 2 is electrically connected with the air switch ontology 1 and the output interface 4 respectively, in the electricity
When there are lightning stroke or high-voltage great-current in road, overvoltage is diverted to the earth, to protect load.
It should be noted that input interface is used for input power, output interface is for connecting the load such as electrical equipment.Entirely
The circuit of air switch uses integrated design, air switch ontology and surge protector has been internally integrated, so that the present invention was both
Have the function of air switch, and there is surge protection function.In addition, air switch and surge protector two is independent electrical
Equipment is combined into one, becomes an electric terminal by two electric connecting points in theory and practice, reduces equipment fault point.
Further, the air switch ontology 1 includes the first air switch component 11,12 and of the second air switch component
Third air switch component 13；The surge protector includes the first Surge protection components 21,22 and of the second Surge protection components
Third Surge protection components 23；
One end of the first air switch component 11 is electrically connected the first terminals L1_IN of the input interface, described
The other end of first air switch component 11 is electrically connected one end of first Surge protection components 21, the output interface
The first terminals L1_OUT, first Surge protection components 21 the other end ground connection；
One end of the second air switch component 12 is electrically connected the second terminals L2_IN of the input interface, described
The other end of second air switch component 12 is electrically connected one end of second Surge protection components 22, the output interface
The second terminals L2_OUT, second Surge protection components 22 the other end ground connection；
One end of the third air switch component 13 is electrically connected the third terminals L3_IN of the input interface, described
The other end of third air switch component 13 is electrically connected one end of the third Surge protection components 23, the output interface
Third terminals L3_OUT, the third Surge protection components 23 the other end ground connection.
It should be noted that input interface and output interface are respectively provided with three terminals, and three terminals one are a pair of
It answers, constitutes three groups of terminals, every group of terminals are corresponding with an air switch component and a Surge protection components.
Further, each air switch component includes the first spring K1, main contact S, the first tripping mechanism, electromagnetic trip
Device T, bimetal leaf M and heater element N1；
One end of the first spring K1 is fixed, and the other end and first tripping mechanism of the first spring K1 is fixed
Connection, the switch of the main contact S are fixedly connected with first tripping mechanism；One end of the main contact S is corresponding
The terminals of input interface are electrically connected, and the other end of the main contact S is electrically connected with one end of the magnetictrip T, described
The other end of magnetictrip T is electrically connected with one end of the heater element N1, the other end of the heater element N1 respectively with
The terminals electrical connection of its corresponding Surge protection components, output interface；The bimetal leaf M and the heater element N1 are close
Setting, to be matched with the heater element N1；First tripping mechanism and the magnetictrip T, the bimetal leaf M
It is arranged close to, to be matched with the magnetictrip T, the bimetal leaf M；
It is under normal circumstances in the circuit, first tripping mechanism engaging, the main contact S closure, described the
One spring K1 is in tensional state；
When general overload occurs for the circuit, the heater element N1 generates heat, keeps the bimetal leaf M heated
Bending pushes first tripping mechanism, and first tripping mechanism disengages, and makes the main contact S in the first spring K1
Elastic force effect lower disconnect；
When short circuit or heavy overload electric current occur for the circuit, the armature in the magnetictrip T is attracted, and hits institute
The first tripping mechanism is stated, first tripping mechanism disengages, and makes the main contact S under the elastic force effect of the first spring K1
It disconnects.
It should be noted that in the first air switch component 11, one end of main contact S and the first wiring of input interface
L1_IN electrical connection is held, one end of heater element N1 is electrically connected with the first Surge protection components 21；In the second air switch component 12
In, one end of main contact S is electrically connected with the second terminals L2_IN of input interface, one end of heater element N1 and the second surge
Component 22 is protected to be electrically connected；In third air switch component 13, one end of main contact S and the third terminals of input interface
L3_IN electrical connection, one end of heater element N1 is electrically connected with third Surge protection components 23.
Further, first tripping mechanism has contact with L2, lever and axis Z including the first lock L1, first；The lever
Including cross bar L3 and vertical bar L4；
One end of the cross bar L3 is fixedly connected with the vertical bar L4, the other end and the electromagnetic trip of the cross bar L3
Armature in device T is arranged close to；One end of the vertical bar L4 is had contact with L2 with described first and is fixedly connected, and the vertical bar L4's is another
End is arranged close to the bimetal leaf M；Described first one end for having contact with L2 is fixed by the axis Z, and described first takes
The other end of hook L2 and it is described first lock L1 one end match, to be engaged, it is described first lock L1 the other end with
The first spring K1 is fixedly connected；The switch of the main contact S is fixedly connected with the first lock L1；
It is under normal circumstances in the circuit, the first lock L1 has contact with L2 with described first and engages, the main touching
Head S closure, the first spring K1 are in tensional state；
When general overload occurs for the circuit, the heater element N1 generates heat, keeps the bimetal leaf M heated
Bending, push the vertical bar L4, and drive described first to have contact with L2 and rotate around the axis Z, make described first have contact with L2 with it is described
First lock L1 is disengaged, and the first lock L1 is moved under the elastic force effect of the first spring K1, by the main contact S
It disconnects；
When short circuit or heavy overload electric current occur for the circuit, the armature in the magnetictrip T is attracted, and hits institute
Cross bar L3 is stated, and drives described first to have contact with L2 by the vertical bar L4 and is rotated around the axis, make described first to have contact with and L2 institute
The first lock L1 disengagement is stated, the first lock L1 is moved under the elastic force effect of the first spring K1, by the main touching
Head S is disconnected.
It should be noted that heater element N1 is arranged close to bimetal leaf M, the heat for enabling heater element N1 to generate
It is bent bimetal leaf M.Bimetal leaf M and one end of vertical bar L4 are arranged close to, and can be pushed after making bimetal leaf M heated bending
Vertical bar L4.Armature in magnetictrip T is arranged close to cross bar L3, makes can hit in magnetictrip T when the armature is engaged
Hit cross bar L3.
First tripping mechanism is a set of linkage.After main contact is closed by operating mechanism, just closed by latch hook lock
The position of lock.When general overload occurs for circuit, though overload current cannot be such that magnetictrip acts, heater element can be made
Generating certain heat promotes bimetal leaf is heated to be bent upwards, and pushes lever to make first to have contact with and disengages with the first lock, by main touching
Head disjunction, cuts off the power.If short circuit or heavy overload electric current, magnetictrip will be made of making in the first tripping mechanism
Latch hook disengage, make main contact rapid disjunction under the action of release spring.
According to the difference of protective effect, magnetictrip can be divided into overcurrent trip and device for under-voltage releasing equipment.In electromagnetism
When buckle releaser is overcurrent trip, it is under normal circumstances in circuit, the armature of magnetictrip discharges, in circuit
When in short circuit or heavy overload electric current, short circuit current is more than setting current value of threading off moment, and the coil of magnetictrip generates
Armature inside magnetictrip is attracted and is hit lever by sufficiently large electromagnetic attraction, is made first to have contact with and is rotated up around axis
It is disengaged with the first lock, first latches in main contact disjunction under the action of reaction spring, cuts off the power.It is in magnetictrip
When device for under-voltage releasing equipment, it is under normal circumstances in circuit, the armature inside magnetictrip is attracted, and main contact is just closed,
When circuit is in short circuit or heavy overload electric current, armature is just released and disconnects main contact, when supply voltage restores normal
When, it is necessary to it could work after closing a floodgate again, realize o-volt protection.
Further, each Surge protection components include piezoresistor RE；
The terminals electrical connection of the corresponding air switch component in one end of the piezoresistor RE, output interface,
The other end of the piezoresistor RE is grounded；
When the circuit has lightning stroke or high-voltage great-current, overvoltage is diverted to the earth by the piezoresistor short circuit,
Control the voltage on the circuit in a certain range, to protect load.
It should be noted that high resistant open-circuit condition is presented when the technical principle of surge protector is low pressure, when high pressure, is presented
Low-resistance short-circuit condition, the present invention are that a kind of energy is born the overvoltage protection piezoresistor that hundreds of amperes of high currents pass through to be applied to
In circuit.
When the electric wiring of access switch has lightning stroke and high-voltage great-current, the piezoresistor of overvoltage protection is presented immediately
Short circuit, and overvoltage is diverted to the earth, controls voltage on electric wiring in a certain range so that electrical equipment by
Protection.
Further, as shown in Fig. 2, each Surge protection components further include heat-sensitive sheet N2, the second tripping mechanism, show
Show lever C, second spring K2 and third spring K3；
One end of the varistor RE passes through the heat-sensitive sheet N2 corresponding air switch component, output interface
Terminals electrical connection；One end of the second spring K2 is fixed, the other end of the second spring K2 and the second tripping machine
Structure is fixedly connected；One end of the third spring K3 is fixed, and the other end of the third spring K3 is fixed with the display lever C
Connection；Second tripping mechanism is arranged close to the heat-sensitive sheet N2, the display lever C；
In the piezoresistor RE normal use, the second latching device engaging, the second spring K2 is in
Compressive state, the display lever C are shown in green；
In piezoresistor RE damage, the high current that the circuit generates keeps the heat-sensitive sheet N2 temperature distortion curved
Song pushes second latching device, disengages second latching device, and under the effect of the elastic force of the second spring K2
Push the display lever C is counter to turn 90 degrees, it is shown in red, to remind piezoresistor RE described in user to damage.
It should be noted that one end of varistor RE is distinguished by heat-sensitive sheet N2 in the first Surge protection components 21
It is connect with the first terminals L1_OUT of one end of the heater element N1 in the first air switch component 11, output interface；?
In two Surge protection components 22, one end of varistor RE by heat-sensitive sheet N2 respectively with the hair in the second air switch component 12
The second terminals L2_OUT connection of one end, output interface of thermal element N1；In third Surge protection components 23, varistor
One end of RE by heat-sensitive sheet N2 respectively with one end of the heater element N1 in third air switch component 13, output interface the
Three terminals L3_OUT connections.
Further, second latching device includes that the second lock L5 and second has contact with L6；
Described second one end for having contact with L6 is equipped with protrusion B, and the protrusion B and heat-sensitive sheet N2 is arranged close to, and described the
Two one end for having contact with the other end and the second lock L5 of L6 match, to be engaged；The second lock L5 is close to institute
It states one end that second has contact with L6 to be fixedly connected with the second spring K2, the other end and the display thick stick of the second lock L5
Bar C is arranged close to；
In the piezoresistor RE normal use, the second lock L5 and described second has contact with L6 engaging, described
Second spring K2 is in compressive state, and the display lever C is shown in green；
In piezoresistor RE damage, the high current that the circuit generates keeps the heat-sensitive sheet N2 temperature distortion curved
Song pushes described second to have contact with L6, and the second lock L5 and described second is made to have contact with L6 disengagement, and makes the second lock L5
Push the display lever C is counter to turn 90 degrees under the elastic force effect of the second spring K2, it is shown in red, to remind user institute
State piezoresistor RE damage.
It should be noted that display lever C is green on one side, it is on one side red.In piezoresistor RE normal use,
The green face of display lever C is located at display window.In piezoresistor RE damage, heat-sensitive sheet N2 heated bending pushes the
Two, which have contact with the lock of L6 and second L5, disengages, and the second spring K2 of compression pushes the second lock L5 to move up, so that the second lock
L5 pushes up display lever C upwards, shows that lever C is counter and turn 90 degrees, red face is shown at display window.
Further, the piezoresistor is the pluggable electronic chip being connected in the circuit.
It should be noted that piezoresistor is designed to movable plug type, if can pull more when damage
It changes, replaces and show after piezoresistor lever C with being located at the green face of display lever C at display window.
It should be noted that air switch acts on extremely important in low-voltage distribution system, it is that essential distribution is set
Standby, only when air switch increases surge protector, entire low-voltage distribution system just has anti-lightning strike current distribution system
Function, if there is the air switch product with lightning protection function being combined into one, it will substantially improve the safety of distribution system,
Therefore, the extensive application of thunder-prevention switch will all become the market of new product, and market prospects are very big.
Air switch and surge shield are protected two components of device and are merged into after a component only needs by the embodiment of the present invention
One component, the electric wiring of one component of cloth are installed；Replacement or maintenance surge protector, it is not necessary to rewiring, also not
It needs to power off, hot-swappable mode can more replace surge protection device；It is small in size using piezoresistor, easy for installation, not shadow
Ring air switch space；Entire design circuit uses integrated design, has been internally integrated air switch and surge protector；?
It can be used as surge protector again as air switch, improve the economy used, while bringing very greatly to operation and maintenance
Convenience, increase safety, reliability；Realize the protection of line-ground, eliminate electric wiring over the ground between overvoltage.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of air switch with surge protection function characterized by comprising
Air switch ontology, is electrically connected with input interface and output interface respectively, for overload or short trouble to occur in circuit
When disconnect the circuit；And
Surge protector is electrically connected with the air switch ontology and the output interface respectively, for having thunder in the circuit
It hits or when high-voltage great-current, overvoltage is diverted to the earth, to protect load.
2. as described in claim 1 with the air switch of surge protection function, which is characterized in that the air switch ontology packet
Include the first air switch component, the second air switch component and third air switch component；The surge protector includes first
Surge protection components, the second Surge protection components and third Surge protection components；
One end of the first air switch component is electrically connected the first terminals of the input interface, first air switch
The other end of component is electrically connected first terminals of one end of first Surge protection components, the output interface, institute
State the other end ground connection of the first Surge protection components；
One end of the second air switch component is electrically connected the second terminals of the input interface, second air switch
The other end of component is electrically connected second terminals of one end of second Surge protection components, the output interface, institute
State the other end ground connection of the second Surge protection components；
One end of the third air switch component is electrically connected the third terminals of the input interface, the third air switch
The other end of component is electrically connected the third terminals of one end of the third Surge protection components, the output interface, institute
State the other end ground connection of third Surge protection components.
3. as claimed in claim 2 with the air switch of surge protection function, which is characterized in that each air switch component packet
Include the first spring, main contact, the first tripping mechanism, magnetictrip, bimetal leaf and heater element；
One end of first spring is fixed, and the other end of first spring is fixedly connected with first tripping mechanism, institute
The switch for stating main contact is fixedly connected with first tripping mechanism；The corresponding input interface in one end of the main contact
Terminals electrical connection, the other end of the main contact are electrically connected with one end of the magnetictrip, the magnetictrip
The other end is electrically connected with one end of the heater element, and the other end of the heater element distinguishes corresponding surge protection group
The terminals electrical connection of part, output interface；The bimetal leaf is arranged close to the heater element, with the heater element
It matches；First tripping mechanism is arranged close to the magnetictrip, the bimetal leaf, with the electromagnetic trip
Device, the bimetal leaf match；
It is under normal circumstances in the circuit, the first tripping mechanism engaging, the main contact closure, first spring
In tensional state；
When general overload occurs for the circuit, the heater element generates heat, makes the bimetal leaf heated bending, pushes away
First tripping mechanism is moved, first tripping mechanism disengages, and acts on the main contact in the elastic force of first spring
Lower disconnection；
Short circuit occurs in the circuit or when heavy overload electric current, the armature in the magnetictrip is attracted, hits described the
One tripping mechanism, first tripping mechanism disengage, and disconnect the main contact under the elastic force effect of first spring.
4. as claimed in claim 3 with the air switch of surge protection function, which is characterized in that the first tripping mechanism packet
It includes the first lock, first have contact with, lever and axis；The lever includes cross bar and vertical bar；
One end of the cross bar is fixedly connected with the vertical bar, the armature in the other end of the cross bar and the magnetictrip
It is arranged close to；One end of the vertical bar is had contact with described first to be fixedly connected, the other end of the vertical bar and the bimetal leaf
It is arranged close to；Described first one end having contact with is fixed by the axis, described first other end having contact with and described first
One end of lock matches, and to be engaged, the other end of first lock is fixedly connected with first spring；The master
The switch of contact is fixedly connected with first lock；
It is under normal circumstances in the circuit, first lock has contact with described first to be engaged, the main contact closure, institute
It states the first spring and is in tensional state；
When general overload occurs for the circuit, the heater element generates heat, makes the bimetal leaf heated bending, pushes away
The vertical bar is moved, and drives described first to have contact with and is rotated around the axis, makes described first to have contact with and is disengaged with first lock, institute
The first lower movement of elastic force effect for latching in first spring is stated, the main contact is disconnected；
When short circuit or heavy overload electric current occur for the circuit, the armature in the magnetictrip is attracted, and hits the cross
Bar, and drive described first to have contact with by the vertical bar and rotated around the axis, make described first to have contact with and is taken off with first lock
It opens, described first latches in the lower movement of elastic force effect of first spring, and the main contact is disconnected.
5. as claimed in claim 2 with the air switch of surge protection function, which is characterized in that each Surge protection components packet
Include piezoresistor；
The terminals electrical connection of the corresponding air switch component in one end of the piezoresistor, output interface, the pressure
The other end of sensitive resistor is grounded；
When the circuit has lightning stroke or high-voltage great-current, overvoltage is diverted to the earth, makes institute by the piezoresistor short circuit
It states the voltage on circuit to control in a certain range, to protect load.
6. as claimed in claim 5 with the air switch of surge protection function, which is characterized in that each surge protection group
Part further includes heat-sensitive sheet, the second tripping mechanism, display lever, second spring and third spring；
One end of the varistor passes through the corresponding air switch component of the heat-sensitive sheet, the terminals electricity of output interface
Connection；One end of the second spring is fixed, and the other end of the second spring is fixedly connected with second tripping mechanism；Institute
The one end for stating third spring is fixed, and the other end of the third spring is fixedly connected with the display lever；Second tripping
Mechanism is arranged close to the heat-sensitive sheet, the display lever；
In the piezoresistor normal use, the second latching device engaging, the second spring is in compressive state,
The display lever is shown in green；
In piezoresistor damage, the high current that the circuit generates is bent the heat-sensitive sheet temperature distortion, pushes
Second latching device disengages second latching device, and under the effect of the elastic force of the second spring described in promotion
It shows that lever is counter to turn 90 degrees, it is shown in red, to remind piezoresistor described in user to damage.
7. as claimed in claim 6 with the air switch of surge protection function, which is characterized in that the second latching device packet
The second lock and second is included to have contact with；
Described second one end having contact with is equipped with protrusion, and the protrusion is arranged close to the heat-sensitive sheet, described second have contact with it is another
One end and one end of second lock match, to be engaged；Described second latches close to described second one end having contact with
It is fixedly connected with the second spring, the other end of second lock is arranged close to the display lever；
In the piezoresistor normal use, second lock and described second has contact with engaging, at the second spring
In compressive state, the display lever is shown in green；
In piezoresistor damage, the high current that the circuit generates is bent the heat-sensitive sheet temperature distortion, pushes
Described second has contact with, and so that second lock and described second is had contact with disengagement, and make described second to latch in the second spring
Elastic force effect it is lower push the display lever is counter to turn 90 degrees, it is shown in red, to remind the damage of piezoresistor described in user.
8. as claimed in claim 5 with the air switch of surge protection function, which is characterized in that the piezoresistor is can
Plug the electronic chip being connected in the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725036.XA CN109427515B (en) | 2017-08-22 | 2017-08-22 | Air switch with surge protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725036.XA CN109427515B (en) | 2017-08-22 | 2017-08-22 | Air switch with surge protection function |
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| CN109427515A true CN109427515A (en) | 2019-03-05 |
| CN109427515B CN109427515B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710725036.XA Active CN109427515B (en) | 2017-08-22 | 2017-08-22 | Air switch with surge protection function |
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| CN109427515B (en) | 2024-04-09 |
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