CN207338283U - A kind of air switch with surge protection function - Google Patents
A kind of air switch with surge protection function Download PDFInfo
- Publication number
- CN207338283U CN207338283U CN201721056133.6U CN201721056133U CN207338283U CN 207338283 U CN207338283 U CN 207338283U CN 201721056133 U CN201721056133 U CN 201721056133U CN 207338283 U CN207338283 U CN 207338283U
- Authority
- CN
- China
- Prior art keywords
- air switch
- spring
- contact
- surge protection
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of air switch with surge protection function, including：Air switch body, 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 body 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 utility model not only has the function of air switch, but also has surge protection function.
Description
Technical field
It the utility model is related to electronic technology field, more particularly to a kind of air switch with surge protection function.
Background technology
Air switch, also known as air-break, as long as being that electric current will disconnect automatically more than rated current in a kind of 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, its 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, is protected and is protected
Equipment or system be not hit and damage.
And air switch of 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 easily cause to damage to electrical equipment.
Utility model content
The utility model embodiment proposes a kind of air switch with surge protection function, both the work(with air switch
Can, and there is surge protection function.
The utility model embodiment provides a kind of air switch with surge protection function, including：
Air switch body, is electrically connected with input interface and output interface respectively, for overload or short circuit to occur in circuit
The circuit is disconnected during failure；And
Surge protector, is electrically connected with the air switch body and the output interface, in the circuit respectively
When having lightning stroke or high-voltage great-current, overvoltage is diverted to the earth, to protect load.
Further, the air switch body includes the first air switch component, the second air switch component and the 3rd
Air switch component；The surge protector, which includes the first Surge protection components, the second Surge protection components and the 3rd surge, to be 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 module 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 module 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 3rd air switch component is electrically connected the 3rd terminals of the input interface, the 3rd air
The other end of switch module is electrically connected the 3rd wiring of one end, the output interface of the 3rd Surge protection components
End, the other end ground connection of the 3rd 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, and the other end of first spring is fixed with first tripping mechanism to be connected
Connect, 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 takes off
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
The terminals of component, output interface are protected to be electrically connected；The bimetal leaf is arranged close to the heater element, with the hair
Thermal element is engaged；First tripping mechanism is arranged close to the magnetictrip, the bimetal leaf, with the electricity
Magnetic release, the bimetal leaf are engaged；
It is under normal circumstances in the circuit, the first tripping mechanism engaging, the main contact closure, described first
Spring is in extended state；
When general overload occurs for the circuit, the heater element produces heat, makes the bimetal leaf by hot bending
Song, promotes 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 broken under the elastic force effect of first spring
Open.
Further, first tripping mechanism includes the first lock, first has contact with, lever and axis；The lever includes
Cross bar and montant；
One end of the cross bar is fixedly connected with the montant, in the other end of the cross bar and the magnetictrip
Armature is arranged close to；One end of the montant is had contact with described first to be fixedly connected, the other end of the montant and double gold
Belong to piece to be arranged close to；Described first one end having contact with is fixed by the axis, 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 the described 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
Close, first spring is in extended state；
When general overload occurs for the circuit, the heater element produces heat, makes the bimetal leaf by hot bending
Song, promotes the montant, and drives described first to have contact with and rotated around the axis, makes described first to have contact with and is taken off with the described first lock
Open, 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 montant and is rotated around the axis, makes described first to have contact with and the described 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 corresponding air switch component in one end of the piezoresistor, the terminals of output interface are electrically connected, institute
State the other end ground connection of piezoresistor；
When the circuit has lightning stroke or high-voltage great-current, the piezoresistor short circuit, the earth is diverted to by overvoltage,
The voltage on the circuit is set to control within the specific limits, to protect load.
Further, each Surge protection components further include heat-sensitive sheet, the second tripping mechanism, display lever, second
Spring and the 3rd spring；
The wiring that one end of the varistor passes through the heat-sensitive sheet corresponding air switch component, output interface
End is electrically connected；One end of the second spring is fixed, and the other end of the second spring is fixed with second tripping mechanism to be connected
Connect；One end of 3rd spring is fixed, and the other end of the 3rd 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；
When the piezoresistor damages, the high current that the circuit produces bends the heat-sensitive sheet temperature distortion,
Second latching device is promoted, disengages second latching device, and is promoted under the elastic force effect of the second spring
Lever is counter turn 90 degrees for the display, shown in red, to remind piezoresistor described in user to damage.
Further, second latching device has contact with including the second lock and second；
Described second one end having contact be equipped with protrusion, it is described it is raised be arranged close to the heat-sensitive sheet, described second has contact with
The other end and 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；
When the piezoresistor damages, the high current that the circuit produces bends the heat-sensitive sheet temperature distortion,
Promote described second to have contact with, 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 be promoted the display lever is counter and 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.
Implement the utility model embodiment, have the advantages that：
Two components of air switch and surge protector can be merged into a component by the utility model embodiment,
So as to not only have the function of air switch, but also there is surge protection function, improve the economy used, and reduce equipment fault
Point, very big convenience is brought to operation and maintenance, adds security, reliability；It is small using piezoresistor, peace
Dress is convenient, does not influence air switch space；Piezoresistor using pluggable mode connect in circuit, so as to replace or
Repair piezoresistor, it is not necessary to rewiring, it is not required that power-off.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the air switch provided by the utility model with surge protection function
Figure；
Fig. 2 is that the concrete structure of one embodiment of the air switch provided by the utility model with surge protection function shows
It is intended to.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without creative efforts
All other embodiments obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the structure of one embodiment of the air switch provided by the utility model with surge protection function is shown
It is intended to, including：
Air switch body 1, is electrically connected with input interface 3 and output interface 4 respectively, for overload or short to occur in circuit
The circuit is disconnected during the failure of road；And
Surge protector 2, is electrically connected with the air switch body 1 and the output interface 4, in the electricity respectively
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 used to connect electrical equipment even load.Entirely
The circuit of air switch uses integrated design, has been internally integrated air switch body and surge protector so that this practicality is new
Type not only has the function of air switch, but also has 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 body 1 includes the first air switch component 11,12 and of the second air switch component
3rd air switch component 13；The surge protector includes the first Surge protection components 21,22 and of the second Surge protection components
3rd 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 3rd air switch component 13 is electrically connected the 3rd terminals L3_IN of the input interface, described
The other end of 3rd air switch component 13 is electrically connected one end of the 3rd Surge protection components 23, the output interface
The 3rd terminals L3_OUT, the 3rd Surge protection components 23 the other end ground connection.
It should be noted that input interface and output interface have three terminals respectively, and three terminals one are a pair of
Should, three groups of terminals are formed, 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 are 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
Its corresponding Surge protection components, the terminals of output interface are electrically connected；The bimetal leaf M and the heater element N1 are close
Set, to be engaged with the heater element N1；First tripping mechanism and the magnetictrip T, the bimetal leaf M
It is arranged close to, to be engaged with the magnetictrip T, the bimetal leaf M；
It is under normal circumstances in the circuit, first tripping mechanism engaging, the main contact S closures, described the
One spring K1 is in extended state；
When general overload occurs for the circuit, the heater element N1 produces heat, the bimetal leaf M is heated
Bending, promotes 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
Disconnect.
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 is held to be electrically connected, 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
Protection component 22 is electrically connected；In the 3rd air switch component 13, one end of main contact S and the 3rd terminals of input interface
L3_IN is electrically connected, and one end of heater element N1 is electrically connected with the 3rd 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 montant L4；
One end of the cross bar L3 is fixedly connected with the montant 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 montant L4 is had contact with L2 with described first and is fixedly connected, and the montant 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 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 described first lock L1；
It is under normal circumstances in the circuit, the first lock L1 has contact with L2 with described first and engages, and the master touches
Head S closures, the first spring K1 are in extended state；
When general overload occurs for the circuit, the heater element N1 produces heat, the bimetal leaf M is heated
Bending, promotes the montant L4, and drive described first to have contact with L2 and rotated 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
Disconnect；
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 montant L4 and is rotated around the axis, make described first to have contact with and L2 institutes
The first lock L1 disengagements are stated, the first lock L1 is moved under the elastic force effect of the first spring K1, the master is touched
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 produce
Bend bimetal leaf M.Bimetal leaf M and one end of montant L4 are arranged close to, and can be promoted after making bimetal leaf M heated bendings
Montant L4.Armature in magnetictrip T is arranged close to cross bar L3, is hit when the armature in magnetictrip T is attracted
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 act magnetictrip, heater element can be made
Produce certain heat and promote bimetal leaf to be heated and be bent upwards, promote lever to make first to have contact with and disengaged with the first lock, touched main
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
During in short circuit or heavy overload electric current, short circuit current flow exceedes moment dropout setting current value, and the coil of magnetictrip produces
Sufficiently large electromagnetic attraction, the armature inside magnetictrip is attracted and hits lever, is made first to have contact with and is rotated up around axis
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
During 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 recovers 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 corresponding air switch component in one end of the piezoresistor RE, the terminals of output interface are electrically connected,
The other end ground connection of the piezoresistor RE；
When the circuit has lightning stroke or high-voltage great-current, the piezoresistor short circuit, the earth is diverted to by overvoltage,
The voltage on the circuit is set to control within the specific limits, 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 utility model be by it is a kind of can bear overvoltage protection piezoresistor that hundreds of amperes of high currents pass through should
For 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, the voltage on electric wiring is controlled within the specific limits so that electrical equipment is subject to
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 the 3rd spring K3；
One end of the varistor RE passes through corresponding heat-sensitive sheet N2 air switch component, output interface
Terminals are electrically connected；One end of the second spring K2 is fixed, the other end of the second spring K2 and the second dropout machine
Structure is fixedly connected；One end of the 3rd spring K3 is fixed, and the other end of the 3rd 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 uses, the second latching device engaging, the second spring K2 is in
Compressive state, the display lever C are shown in green；
When the piezoresistor RE is damaged, the high current that the circuit produces makes the heat-sensitive sheet N2 temperature distortions curved
Song, promotes second latching device, disengages second latching device, and under the elastic force effect of the second spring K2
Promote 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 in the first Surge protection components 21, one end of varistor RE is distinguished by heat-sensitive sheet N2
The first terminals L1_OUT of one end, output interface with the heater element N1 in the first air switch component 11 is connected；
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
One end of thermal element N1, the second terminals L2_OUT connections of output interface；In the 3rd Surge protection components 23, varistor
One end of RE by heat-sensitive sheet N2 respectively one end with the heater element N1 in the 3rd air switch component 13, output interface
Three terminals L3_OUT connections.
Further, second latching device includes the second lock L5 and second and 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 described second lock L5 of L6 match, to be engaged；The second lock L5 is close to institute
State second one end for having 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 uses, the second lock L5 and described second has contact with L6 engagings, described
Second spring K2 is in compressive state, and the display lever C is shown in green；
When the piezoresistor RE is damaged, the high current that the circuit produces makes the heat-sensitive sheet N2 temperature distortions curved
Song, promotes described second to have contact with L6, the second lock L5 and described second is had contact with L6 disengagements, and makes the second lock L5
Promote 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 damages.
It should be noted that display lever C one sides are green, it is simultaneously red.In piezoresistor RE normal uses,
The green face of display lever C is located at display window.When piezoresistor RE is damaged, heat-sensitive sheet N2 heated bendings, promote the
Two, which have contact with the locks of L6 and second L5, disengages, and the second spring K2 of compression promotes the second lock L5 to move up so that the second lock
L5 pushes up display lever C upwards, and display lever C is counter to be turn 90 degrees, and red face is included 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 the plug type of activity, if during damage, can pull more
Change, replace and show after piezoresistor lever C with by going back, making the green face of display lever C be located at display window manually.
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, whole low-voltage distribution system just possesses anti-lightning strike current distribution system
Function, if the air switch product with lightning protection function being combined into one, it will substantially improve the security of distribution system,
Therefore, the extensive application of thunder-prevention switch all will be very big as the market of new product, market prospects.
Air switch and surge shield are protected two components of device and are merged into after a component only by the utility model embodiment
Need that a component, the electric wiring of one component of cloth are installed；Replace or repair surge protector, it is not necessary to rewiring,
Also without power-off, hot-swappable pattern can more replace surge protection device；It is small using piezoresistor, it is easy for installation,
Air switch space is not influenced；Whole design circuit uses integrated design, has been internally integrated air switch and surge protector；
It can be used as air switch and can be used as surge protector again, improve the economy used, while bring to operation and maintenance
Very big convenience, adds security, reliability；Realize the protection on line-ground, the overvoltage between eliminating electric wiring over the ground.
The above is the preferred embodiment of the utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the scope of protection of the utility model.
Claims (8)
- A kind of 1. air switch with surge protection function, it is characterised in that including：Air switch body, is electrically connected with input interface and output interface respectively, for overload or short trouble to occur in circuit When disconnect the circuit；AndSurge protector, is electrically connected with the air switch body and the output interface respectively, for having thunder in the circuit Hit or during high-voltage great-current, overvoltage is diverted to the earth, to protect load.
- 2. the air switch with surge protection function as claimed in claim 1, it is characterised in that the air switch body bag Include the first air switch component, the second air switch component and the 3rd air switch component；The surge protector includes first Surge protection components, the second Surge protection components and the 3rd 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 one end of first Surge protection components, the first terminals of 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 one end of second Surge protection components, the second terminals of the output interface, institute State the other end ground connection of the second Surge protection components；One end of the 3rd air switch component is electrically connected the 3rd terminals of the input interface, the 3rd air switch The other end of component is electrically connected one end of the 3rd Surge protection components, the 3rd terminals of the output interface, institute State the other end ground connection of the 3rd Surge protection components.
- 3. the air switch with surge protection function as claimed in claim 2, it is characterised in that each air switch component bag 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 are electrically connected, and the other end of the main contact is 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 Part, the terminals of output interface are electrically connected；The bimetal leaf is arranged close to the heater element, with the heater element It is engaged；First tripping mechanism is arranged close to the magnetictrip, the bimetal leaf, with the electromagnetic trip Device, the bimetal leaf are engaged；It is under normal circumstances in the circuit, the first tripping mechanism engaging, the main contact closure, first spring In extended state；When general overload occurs for the circuit, the heater element produces heat, makes the bimetal leaf heated bending, pushes away First tripping mechanism is moved, first tripping mechanism disengages, and the main contact is acted in the elastic force of first spring Lower disconnection；Short circuit occurs or during heavy overload electric current in the circuit, the armature in the magnetictrip is attracted, and hits described the One tripping mechanism, first tripping mechanism disengage, and the main contact is disconnected under the elastic force effect of first spring.
- 4. the air switch with surge protection function as claimed in claim 3, it is characterised in that the first tripping mechanism bag Include the first lock, first have contact with, lever and axis；The lever includes cross bar and montant；One end of the cross bar is fixedly connected with the montant, the other end of the cross bar and the armature in the magnetictrip It is arranged close to；One end of the montant is had contact with described first to be fixedly connected, the other end of the montant and the bimetal leaf It is arranged close to；Described first one end having contact with is fixed by the axis, 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 the described 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 State the first spring and be in extended state；When general overload occurs for the circuit, the heater element produces heat, makes the bimetal leaf heated bending, pushes away The montant 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 the described 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 horizontal stroke Bar, and drive described first to have contact with by the montant and rotated around the axis, make described first to have contact with and taken off with the described first lock Open, described first latches in the lower movement of elastic force effect of first spring, and the main contact is disconnected.
- 5. the air switch with surge protection function as claimed in claim 2, it is characterised in that each Surge protection components bag Include piezoresistor；The corresponding air switch component in one end of the piezoresistor, the terminals of output interface are electrically connected, the pressure The other end ground connection of sensitive resistor；When the circuit has lightning stroke or high-voltage great-current, the piezoresistor short circuit, is diverted to the earth by overvoltage, makes institute State the voltage on circuit to control within the specific limits, to protect load.
- 6. the air switch with surge protection function as claimed in claim 5, it is characterised in that each surge protection group Part further includes heat-sensitive sheet, the second tripping mechanism, display lever, second spring and the 3rd 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 the 3rd spring is fixed, and the other end of the 3rd spring is fixedly connected with the display lever；Described second threads off 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；When the piezoresistor damages, the high current that the circuit produces bends the heat-sensitive sheet temperature distortion, promotes Second latching device, disengages second latching device, and under the elastic force effect of the second spring described in promotion Show that lever is counter to turn 90 degrees, it is shown in red, to remind piezoresistor described in user to damage.
- 7. the air switch with surge protection function as claimed in claim 6, it is characterised in that the second latching device bag The second lock and second is included to have contact with；Described second one end having contact be equipped with protrusion, it is described it is raised be arranged close to the heat-sensitive sheet, described second have contact with it is another One end and one end of the described second lock match, to be engaged；Second lock is 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 It is shown in green in compressive state, the display lever；When the piezoresistor damages, the high current that the circuit produces bends the heat-sensitive sheet temperature distortion, promotes Described second has contact with, and 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 promote the display lever be counter turn 90 degrees, it is shown in red, to remind piezoresistor described in user to damage.
- 8. the air switch with surge protection function as claimed in claim 5, it is characterised in that the piezoresistor is can Plug is connected to the electronic chip in the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721056133.6U CN207338283U (en) | 2017-08-22 | 2017-08-22 | A kind of air switch with surge protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721056133.6U CN207338283U (en) | 2017-08-22 | 2017-08-22 | A kind of air switch with surge protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207338283U true CN207338283U (en) | 2018-05-08 |
Family
ID=62373449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721056133.6U Active CN207338283U (en) | 2017-08-22 | 2017-08-22 | A kind of air switch with surge protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207338283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109427515A (en) * | 2017-08-22 | 2019-03-05 | 深圳市威尔利实业有限公司 | A kind of air switch with surge protection function |
-
2017
- 2017-08-22 CN CN201721056133.6U patent/CN207338283U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109427515A (en) * | 2017-08-22 | 2019-03-05 | 深圳市威尔利实业有限公司 | A kind of air switch with surge protection function |
| CN109427515B (en) * | 2017-08-22 | 2024-04-09 | 深圳市威尔利实业有限公司 | Air switch with surge protection function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016146083A1 (en) | Miniature circuit breaker capable of rapid breaking | |
| CN105470911B (en) | A kind of direct current limiter | |
| CN107731635A (en) | A kind of standby breaker protector for surge protector | |
| CN207338283U (en) | A kind of air switch with surge protection function | |
| CN202004451U (en) | Secondary open circuit protection device of intelligent current transformer | |
| CN109427515A (en) | A kind of air switch with surge protection function | |
| CN204391700U (en) | A kind of Novel electric surge protector | |
| CN204391714U (en) | A kind of Novel electric surge protector | |
| CN204131081U (en) | A kind of automatic reclosing low-voltage circuit breaker | |
| CN204538679U (en) | A kind of Novel electric surge protector | |
| CN204144932U (en) | A kind of novel surge protection device | |
| CN204391713U (en) | A kind of Novel electric surge protector | |
| CN203377449U (en) | Duel temperature regulation safety socket | |
| CN204391732U (en) | A kind of Novel electric surge protector | |
| CN206353699U (en) | Electrical cord assembly and the electric heater with it | |
| CN204538678U (en) | A kind of Novel electric surge protector | |
| CN204391708U (en) | A kind of Novel electric surge protector | |
| CN204967253U (en) | Novel surge protection device (SPD) | |
| CN105576632A (en) | Novel surge protection device | |
| CN204391707U (en) | A kind of Novel electric surge protector | |
| CN105322523A (en) | Novel surge protection device | |
| CN204391718U (en) | A kind of Novel electric surge protector | |
| CN204538683U (en) | A kind of Novel electric surge protector | |
| CN204391704U (en) | A kind of Novel electric surge protector | |
| CN204391701U (en) | A kind of Novel electric surge protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |