CN108838488A - A kind of electric iron - Google Patents
A kind of electric iron Download PDFInfo
- Publication number
- CN108838488A CN108838488A CN201811069354.6A CN201811069354A CN108838488A CN 108838488 A CN108838488 A CN 108838488A CN 201811069354 A CN201811069354 A CN 201811069354A CN 108838488 A CN108838488 A CN 108838488A
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- Prior art keywords
- control circuit
- switch
- electric iron
- temperature
- circuit
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/02—Soldering irons; Bits
- B23K3/03—Soldering irons; Bits electrically heated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Resistance Heating (AREA)
Abstract
This application discloses a kind of electric iron, the electric iron includes solder horn, temperature sensor and heater strip, the heater strip is for heating the solder horn, the temperature sensor is used to acquire the temperature of the heater strip, the electric iron further includes circuit board, control circuit and heating strip control circuit are provided on the circuit board, wherein：When the temperature of temperature sensor acquisition is within preset temperature range, the control circuit records duration of the temperature within preset temperature range；When the duration of record reaches preset duration threshold value, the heating strip control circuit is switched to the state for stopping heating to the heater strip by the control circuit.The application is controlled by control circuit when the temperature of heater strip reaches preset temperature, and timer just starts timing, to accurately control the time of fusion welds material.
Description
Technical field
The present invention relates to, but not limited to electronic technology field more particularly to a kind of electric iron.
Background technique
Electric iron is the basic tool of manual welding, and effect is heating welding position, melts solder, makes solder and welded
Metal connects.The internal structure of electric iron mainly includes heating part, heat accumulating portion and handle portion, wherein heating part
Divide also known as heater, the metal material by winding high resistivity on mica or ceramics insulator is constituted, and effect is will be electric
It can be converted into thermal energy；Heat accumulating portion is solder horn, generallys use larger density and the biggish copper of specific heat capacity or copper alloy is made into；Hand
Handle generally uses timber, bakelite or high-temperature resistance plastice to be process.
Duration is welded for control, a timer can be set on existing electric iron.But existing timer regardless of
Whether solder horn reaches set temperature, as long as solder horn contact weld position begins to timing, cause to grow when actual welding
The situation of existing inaccuracy, and existing electric iron will not usually automatically power off.
Summary of the invention
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of electric iron, when can accurately control welding
It is long.
In order to reach the object of the invention, what the technical solution of the embodiment of the present invention was realized in：
The embodiment of the invention provides a kind of electric iron, including solder horn, temperature sensor and heater strip, the heater strips
For heating the solder horn, the temperature sensor is used to acquire the temperature of the heater strip, and the electric iron further includes electricity
Road plate is provided with control circuit and heating strip control circuit on the circuit board, wherein：When the temperature of temperature sensor acquisition
When within preset temperature range, the control circuit records duration of the temperature within preset temperature range；Work as record
Duration when reaching preset duration threshold value, the control circuit by the heating strip control circuit switch to stopping to described plus
The state that heated filament is heated.
The technical solution of the embodiment of the present invention, has the advantages that：
Electric iron provided in an embodiment of the present invention, by control circuit control when the temperature of heater strip reaches preset temperature
When, timer just starts timing, to accurately control the time of fusion welds material, avoiding weld interval too long leads to material
Material damage or weld interval cause to fix very little bad；
Further, by heat insulation and spring structure, so that solder horn pressing is when on welding material, switch is beaten automatically
It opens；When solder horn lifts from welding material, switch is automatically closed, and saves electric energy, is easy to use；
Further, by setting card slot and retainer ring, the installation and replacement of high temperature cloth are facilitated.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is a kind of structural schematic diagram of electric iron of the embodiment of the present invention；
Fig. 2 is a kind of board structure of circuit schematic diagrames of electric iron of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another electric iron of the embodiment of the present invention；
Fig. 4 is that a kind of electric iron of electric iron of the embodiment of the present invention controls the structural schematic diagram of box；
Fig. 5 is the board structure of circuit schematic diagrames of another electric iron of the embodiment of the present invention；
Wherein, the reference numerals are as follows：1：Solder horn；2：Heating wire；3：Card slot；4：Sleeve；5：Slip-preventing silica gel cover；6：
Temperature sensor；7：Heat insulation；8：Spring；9：Switch card slot；105：Switch；11：Handle casing；12：Retainer ring；13：Electric iron
Control box；14：Battery main switch；15：Temperature display and setup module；16：Time showing and setup module；A1：Switching circuit；
A2：Buzzer circuit；A3：Heating wire control circuit；PORT1：Temperature sensor input port；PORT2：Temperature sensor output
Mouthful；PORT3：Timer enables mouth；PORT4：Timer delivery outlet；U1A：First logic gates；U2A：Second logic gate electricity
Road；U3A：Third logic gates；U4A：4th logic gates；VCC：Supply voltage；S1：Switch；R1：First resistor；C1：
First capacitor；Q2：Triode；Bell：Buzzer；D1：Diode；K1：Relay；Q1：Metal-oxide-semiconductor；R2：Second resistance；R3：The
Three resistance；GND：Ground connection.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
As shown in Figure 1, the embodiment of the invention provides a kind of electric iron, including solder horn 101, heater strip 102 and temperature
Sensor 103, the heater strip 102 is for heating the solder horn 101, and the temperature sensor 103 is for acquiring described add
The temperature of heated filament 102, the electric iron further include circuit board 104, be provided on the circuit board 104 control circuit 1041 and
Heating strip control circuit 1042, wherein：
When the temperature that temperature sensor 103 acquires is within preset temperature range, the control circuit 1041 records institute
State duration of the temperature within preset temperature range；
When the duration of record reaches preset duration threshold value, the control circuit 1041 is by the heating strip control circuit
1042 switch to the state for stopping being heated to the heater strip 102.
The application is controlled by control circuit 1041 when the temperature of heater strip 102 reaches preset temperature, and timing is just started,
The duration of welding can accurately be controlled.
Heater strip in the present invention is properly termed as heating wire, heating wire again, and according to composition material, heater strip is divided into ferrum-chromium-aluminum
Heater strip and nickel chromium triangle heater strip.
In one embodiment of this invention, as shown in Fig. 2, the electric iron further includes switch 105, the switch 105 with
The control circuit 1041 is electrically connected, described when the temperature acquired when temperature sensor 103 is within preset temperature range
Control circuit 1041 records duration of the temperature within preset temperature range；When the duration of record reaches preset duration threshold
When value, the heating strip control circuit 1042 is switched to stopping and added to the heater strip 102 by the control circuit 1041
The state of heat, specifically includes：
When the temperature that the folding condition of the switch 105 is in an open state and the temperature sensor 103 acquires is default
When within temperature range, the control circuit 1041 records duration of the temperature within preset temperature range；
When the folding condition of the switch 105 is in an open state and the duration of the record reaches preset duration threshold value
When, the control circuit 1041 switches to the state for stopping being heated to the heater strip 102.
In one embodiment of this invention, described as shown in Fig. 2, the control circuit 1041 includes microcontroller 10411
Microcontroller 10411 includes temperature sensor input port, temperature sensor delivery outlet, timer enables mouth and timer exports
Mouthful, wherein：The temperature sensor input port is used to obtain the temperature of the temperature sensor acquisition, and the temperature sensor is defeated
It exports the temperature for acquiring according to the temperature sensor and exports first control signal；
The timer enable mouth be used to be started according to the folding condition of the switch 105 and the first control signal or
Stop timing, the timer delivery outlet is used to export second control signal according to the duration of the record；The heater strip control
Circuit 1042 processed according to the folding condition of switch 105, first control signal, second control signal for starting or stopping to described
Heater strip is heated.
In the present embodiment, timing can be carried out by the circuit for being located at the inside of the microcontroller；In other embodiments,
It can be and timing is carried out by an individual device (such as timer, timer etc.) of the outside for being located at the microcontroller.
In one embodiment of this invention, the control circuit 1041 further includes：First logic gates, the second logic gate
Circuit, third logic gates；The control circuit 1041 is also used to export switch control according to the folding condition of the switch 105
Signal processed；The switch control signal and the first control signal input two inputs of first logic gates respectively
End；
The output end of the third logic gates connects an input terminal of second logic gates, the switch
Control signal inputs another input terminal of second logic gates；
The temperature sensor delivery outlet and timer delivery outlet be separately connected the third logic gates two are defeated
Enter end；
The output end of first logic gates connects the timer and enables mouth；
The heating strip control circuit 1042 is used to be believed according to the folding condition of switch, first control signal, the second control
It number starts or stops and the heater strip is heated, including：
The heating strip control circuit 1042 is used for the signal according to the output end of second logic gates, start or
The heater strip is heated in stopping.
In an example of the present embodiment, first logic gates is AND gate circuit, second logic gates
For AND gate circuit, the third logic gates is NAND gate circuit；
When the switch is closed, the switch control signal is high level signal；When the switch is open, described to open
Closing control signal is low level signal；
When the temperature of the acquisition is within the preset temperature range, the first control signal is high level letter
Number；When the temperature of the acquisition is when except the preset temperature range, the first control signal is low level signal；
When the first control signal is high level signal, the control circuit 1041 starts timing, when described first
When control signal is low level signal, the control circuit 1041 stops timing；When the control circuit 1041 just in timing and
When the duration of the record reaches the preset duration threshold value, the second control signal is high level signal；When the control
Circuit 1041 processed is not in timing or just when the duration of timing but the record reaches the preset duration threshold value, institute
Stating second control signal is low level signal.
The application on microcontroller 10411 by being arranged temperature sensor input port, temperature sensor delivery outlet, timing
Device enables mouth and timer delivery outlet, described when the temperature of the temperature sensor 103 acquisition is when except preset temperature range
It is in running order that control circuit 1041 controls the heating strip control circuit 1042；When the temperature that temperature sensor 103 acquires
When within preset temperature range, the control circuit 1041 controls temperature described in timer record and reaches preset temperature range
Duration；When the duration of timer record reaches preset duration threshold value, the control circuit 1041 controls heater strip control electricity
Road 1042 is in off-position.
In one embodiment of this invention, the heating strip control circuit 1042 includes a first transistor, a relay
External power supply is connected to after one group of normally opened contact of the relay is connected with the heater strip with a diode continuousing flow circuit
Positive and negative anodes between；
The grid of the first transistor is the input terminal of the heating strip control circuit 1042, the first transistor
Drain electrode is connected with control coil one end of the relay, the source electrode ground connection of the first transistor, the control of the relay
The other end of coil is connected with the external power supply anode, and the freewheeling circuit is connected in parallel on the control coil two of the relay
End.
The first transistor is N-type Metal-Oxide Semiconductor field-effect tube (Metal Oxide
Semiconductor Field Effect Transistor, MOS-FET) or p-type MOS-FET (according to the control signal of input
Logic circuit relationship between the heating strip control circuit 1042 selects N-type metal-oxide-semiconductor or p-type metal-oxide-semiconductor as first crystal
Pipe).When input high level, the first transistor saturation conduction, relay control coil is powered, and normally opened contact is attracted；Work as input
When low level, the first transistor cut-off, relay control coil power-off, normally opened contact disconnection.
In an example of the present embodiment, the freewheeling diode circuit is freewheeling diode.Freewheeling diode reversely continues
Stream provides access of releasing when the first transistor turns to shutdown by conducting for the electric current in relay control coil.
In an example of the present embodiment, the heating strip control circuit 1042 further includes second resistance and 3rd resistor,
Second resistance is connected with the grid of the first transistor, and one end of 3rd resistor is connected with the grid of the first transistor
It connects, other end ground connection.Second resistance can play metering function, reduce the power consumption of the first transistor；3rd resistor makes first
Transistor reliably ends.
In one embodiment of this invention, the circuit board 104 further includes buzzer circuit, wherein：When the record
When duration reaches preset duration threshold value, the control circuit 1041 controls the buzzer circuit and starts or stops buzzer report
Alert (at this point, the control signal of buzzer circuit input includes the second control signal).
In one embodiment of this invention, when the switch is closed, the control circuit 1041 controls buzzer circuit
Stop buzzer warning (at this point, the control signal of buzzer circuit input includes the second control signal and switch control
Signal processed).
In an example of the present embodiment, the buzzer circuit includes a second transistor and a buzzer, and described the
The base stage of two-transistor is connected with the control signal of input, and the collector of the second transistor is connected with positive pole,
The emitter of the second transistor is connected with one end of the buzzer, the other end ground connection of the buzzer.
In this example, the second transistor is that NPN type triode or PNP type triode (are believed according to the control of input
Logic circuit relationship number between the buzzer circuit, selects NPN type triode or PNP type triode as the second crystal
Pipe).
In one embodiment of this invention, the electric iron further includes switch card slot, heat insulation, spring, wherein：
The switch card slot 9 is fixed on the outer casing inner wall of the electric iron, and the switch 105 is arranged in the switch card slot
Interior, the heat insulation is arranged in one end of the heater strip 102, and the spring is arranged between the heat insulation and the switch.
When the solder horn 101 is pressed on welding material, the power of pressing is transmitted on heat insulation by heater strip,
Under the action of power, heat insulation compresses the spring, and the power for the pressing that solder horn 101 is subject to is bigger, the suppressed range of the spring
It is bigger；When the suppressed range of the spring reaches default suppressed range, the switch 105 changes into closed form from off-state
State.
Bullet is arranged between heat insulation and switch 105 by the way that heat insulation is arranged in one end of heater strip 102 in the application
Spring, so that the pressing of solder horn 101 is when on welding material, switch 105 is automatically opened；Solder horn 101 lifts from welding material
When, switch 105 is automatically closed.
In an example of the present embodiment, the heat insulation is blob of viscose.
In an example of the present embodiment, the switch 105 is connected with a switch Anti-shaking circuit.
In this example, the switch Anti-shaking circuit can be the first capacitor and first resistor for joining connection together.It needs
Illustrate, the switch Anti-shaking circuit may be other arbitrary switch Anti-shaking circuits in the prior art.
In one embodiment of this invention, the solder horn 101 is the alloy material of not cupric.
Due to flexible solar component laying when solder horn 101 do not have to upper tin, cause solder horn 101 quickly oxidation and need through
Often replacement.Using the alloy material solder horn 101 of not cupric, so that solder horn 101 is not oxidizable, avoid often replacing.
In one embodiment of this invention, the electric iron further includes retainer ring 12 and card slot 3, and the card slot 3 is arranged in institute
The outer surface of outer cover for stating electric iron, for clamping the retainer ring.
Since when heating the materials such as packaging adhesive film, the easy degumming of material is sticked on solder horn electric iron, in practical application
One layer of high temperature cloth can be wrapped at solder horn, can be facilitated using retainer ring 12 and card slot 2 and be fixed high temperature cloth.In use, first by high temperature
Then cloth set up covers retainer ring 3 on solder horn 101 from solder horn 101, until fixing retainer ring at card slot 3, in this way
Also high temperature cloth has just been fixed；When replacing high temperature cloth, the i.e. replaceable high temperature cloth of retainer ring is removed.
In one embodiment of this invention, the electric iron further includes electric iron control box, and the setting of circuit board 104 exists
In the electric iron control box.
It should be noted that the circuit board 104 can be set in electric iron interior of shell, it also can be set and ironed with electricity
Inside the electric iron control box of switch, the connection of 103 conducting wire of temperature sensor in iron shell.
In one embodiment of this invention, the electric iron control box includes at least one of：For default temperature to be arranged
The temperature setting module for spending range, for the time setup module of preset duration threshold value to be arranged.
In one embodiment of this invention, the electric iron control box further includes at least one of：It is current for showing
The temperature display module for the temperature that temperature sensor 103 acquires, the time showing of the duration for showing current timer record
Module.
In one embodiment of this invention, the electric iron control box further includes battery main switch, the battery main switch
For controlling the power supply of electric iron the control box and the electric iron simultaneously.
As shown in figure 3, a kind of electric iron according to an embodiment of the present invention, including solder horn 1, heating wire 2, card slot 3, sleeve
4, slip-preventing silica gel cover 5, temperature sensor 6, heat insulation 7, spring 8, switch card slot 9, switch 10, handle casing 11, retainer ring 12, electricity
Heated filament 2 is used for heating iron head 1, and temperature sensor 6 is used to acquire the temperature of heating wire 2, and sleeve 4 can be handle casing 11
A part, for slip-preventing silica gel cover 5 for convenient hand-held, switch card slot 9, can be square using retainer ring 12 and card slot 3 for placing switch 10
Just high temperature cloth is fixed.
As shown in figure 3, by the way that heat insulation 7 is arranged in one end of heating wire 2, and in the heat insulation 7 and the switch 10
Between be arranged spring 8, when solder horn 1 is pressed on welding material, power can be transmitted on heat insulation 7 by heating wire 2.In power
The lower meeting of heat insulation 7 compressed spring 8 is acted on, when heat insulation 7 can push up switch 10 to spring-compressed to a certain extent, thus trigger switch
It automatically opens；When solder horn 1 lifts from welding material, the power being applied on spring 8 disappears, and switch 10 is automatically closed.
As shown in figure 4, being connected between electric iron control box 13 and electric iron by conducting wire, set on electric iron control box 13
It is equipped with battery main switch 14, temperature display and setup module 15, time showing and setup module 16.
It include switching circuit A1, buzzer electricity on circuit board with reference to the circuit board schematic illustration of electric iron shown in fig. 5
Road A2, heating wire control circuit A3 and microcontroller, wherein microcontroller includes temperature sensor input port PORT1, temperature biography
Sensor delivery outlet PORT2, timer enable mouth PORT3 and timer delivery outlet PORT4, temperature sensor input port PORT1 use
In the temperature for obtaining the temperature sensor acquisition, temperature sensor delivery outlet PORT2 is used for the temperature when the acquisition in institute
When stating within preset temperature range, high level signal is exported, when the temperature of the acquisition is when except the preset temperature range,
Export low level signal；
The enabled mouth PORT3 high level of timer is effective, that is to say that timer just works when the port is high level, when the end
When mouth is low level, timer stops timing；When the timer does not have timing or does not just have in the duration of timing but record
When reaching preset duration threshold value, timer delivery outlet PORT4 exports low level signal, when the timer is just in timing and note
When the duration of record is more than preset duration threshold value, timer delivery outlet PORT4 exports high level signal；
In switching circuit A1, one end of the switch S1 (i.e. switch 10 in Fig. 3) is connected with power supply VCC, the other end
It is connected with first with the first input end of door U1A, when switch S1 is pressed, switching circuit A1 output is connected to power supply,
Switching circuit A1 output is high level signal；When switch S1 is not pressed, switching circuit A1 output is connected by first resistor R1
It is connected to ground, is exported as low level signal；
The temperature sensor delivery outlet PORT2 is connected with first with the second input terminal of door U1A, and described first and door
The output end of U1A enables mouth PORT3 with the timer and is connected；
The timer delivery outlet PORT4 is connected with the 4th with the first input end of door U4A, and the switch S1's is another
End is connected with the described 4th with the second input terminal of door U4A, the output end and the buzzer circuit of the described 4th and door U4A
Input terminal be connected；
The temperature sensor delivery outlet PORT2 is connected with the first input end of third NAND gate U3A, the timer
Delivery outlet PORT4 is connected with the second input terminal of third NAND gate U3A, the output end of third NAND gate U3A and second and door
The first input end of U2A is connected, and the output end of the third NAND gate U3A is connected with second with the first input end of door U2A
It connects, the other end of the switch S1 is connected with second with the second input terminal of door U2A, the output end of described second and door U2A
It is connected with the input terminal of heating strip control circuit.
Buzzer circuit include an a NPN type triode Q2 and buzzer Bell, the base stage of the NPN type triode Q2 with
Described 4th is connected with the output end of door, and the collector of the NPN type triode Q2 is connected with positive pole, the NPN
The emitter of type triode Q2 is connected with one end of the buzzer, the other end ground connection of the buzzer Bell.Work as buzzing
When device circuit input high level signal, Q2 conducting, buzzer Bell both end voltage is supply voltage, buzzer warning.When Q2 is defeated
When entering low level, Q2 is not turned on, and buzzer both ends do not have voltage, and buzzer is not alarmed.
Heating wire control circuit includes a N-type metal-oxide-semiconductor Q1, a relay K1 and a sustained diode 1, resistance R2, resistance
One end of normally opened contact of R3, the relay K1 are connected with one end of power supply, and the other end is connected with one end of heating wire,
The other end of power supply is connected with the other end of heating wire；The grid of the N-type metal-oxide-semiconductor Q1 is the heating strip control circuit
Input terminal, drain electrode are connected with coil one end of the relay, source electrode ground connection, the other end and electricity of the coil of the relay K1
Source anode is connected, and the parallel connection of coil of the sustained diode 1 and relay K1, resistance R2 is arranged in second and door
Output end and Q1 grid between, one end of resistance R3 is connected with the grid of Q1, the other end ground connection.When heating wire controls electricity
It when the input high level of road, is divided by R2 and R3, Q1 input high level, relay K1 is closed after Q1 conducting, and heating wire work is logical
Electricity, heating wire are in running order.When input low level, Q1 input low level, Q1 closure, relay no power, relay
K1 is opened, and heating wire is in off-position.
In Fig. 3 circuit, U1A, U2A and U4A are AND gate circuit, and U3A is NAND gate circuit.It should be noted that can also be with
It changes U4A into NAND gate circuit, needs to change Q2 into PNP type triode at this time；Or into U2A can also will be changed to NAND gate electricity
Road needs to change Q1 into p-type metal-oxide-semiconductor at this time.
When electric iron pressing is on welding material, switch S1 is pressed, and switching circuit exports high level.Since temperature does not have
Reach set temperature, temperature sensor exports low level.Therefore U1A inputs 1 high level, inputs 2 low levels, exports 3 low levels.
Since timer enable end is low level, timer does not work and exports low level.Therefore U4A inputs 2 high level, inputs 1 low electricity
It is flat, 3 low levels are exported, buzzer circuit does not work.U3A input 1 is low level, and input 2 is low level, and output 3 is high level.
U2A input 1 is high level, and input 2 is high level, and output 3 is high level.Heating wire is in running order, and temperature increases.
When heating wire temperature raising reach setting temperature when, temperature sensor output port export high level, influence U1A and
U3A.U1A input 1 and input 2 are high level, and output 3 is high level.Timer is enabled, and timer starts timing.U3A input 1
For high level, input 2 is high level, and output 3 is consistent for low level with state before.Therefore heating wire is in work
State.
When timer reaches setting time, timer output port exports high level, influences U4A and U3A, and U4A inputs 1 He
2 be high level, and output 3 is high level, buzzer circuit alarm.U3A input 1 and input 2 are high level, and output 3 is low level,
U2A input 1 is low level, and input 2 is high level, and output 3 is low level, and heating wire is in off-position.
When electric iron lifts from welding material, switch S1 unclamps.Switching circuit exports low level, influences U1A, U4A
And U2A.U1A input 1 is low level, and input 2 is high level, and output 3 is low level, and timer does not work, timer output end
Mouth output low level.U4A input 1 and input 2 are low level, and output 3 is low level, and buzzer exits alarm condition.Due to U2A
Input 2 is low level, therefore no matter inputs 1 as high level or low level, and output 3 is low level, and heating wire is in
Off-position.
Electric iron solder horn pressing heating wire when on material may be implemented in the electric iron realized according to embodiments of the present invention
It starts to work.When electric iron temperature rises to setting temperature, enabled timer starts timing.It is set when timer reaches timer
When setting, buzzer starts to alarm, and heating wire automatically powers off.When electric iron lifts from welding material, buzzer circuit is exited
Alarm condition.
In description in the present invention, it should be noted that term " on ", "lower", " side ", " other side ", " one end ",
The orientation or positional relationship of the instructions such as " other end ", " side ", " opposite ", " quadrangle ", " periphery ", " ' mouth ' word structure " is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Structure there is specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " connection " " directly connects
Connect ", " being indirectly connected with ", " being fixedly connected ", " installation ", " assembly " shall be understood in a broad sense, can also for example, it may be fixedly connected
To be to be detachably connected, or be integrally connected；Term " installation ", " connection ", " being fixedly connected " can be directly connected, can also be with
Indirectly connected through an intermediary, it can be the connection inside two elements.For the ordinary skill in the art, may be used
The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, the appended claims that must still be subject to defined.
Claims (10)
1. a kind of electric iron, including solder horn, temperature sensor and heater strip, the heater strip is used to heat the solder horn,
The temperature sensor is used to acquire the temperature of the heater strip, which is characterized in that the electric iron further includes circuit board, described
Control circuit and heating strip control circuit are provided on circuit board, wherein：
When the temperature of temperature sensor acquisition is within preset temperature range, the control circuit records the temperature default
Duration within temperature range；
When the duration of record reaches preset duration threshold value, the control circuit, which switches to the heating strip control circuit, stops
The state that only heater strip is heated.
2. electric iron according to claim 1, which is characterized in that it further include switch, the switch and the control circuit
Electrical connection；
When the folding condition of the switch be in an open state and the temperature sensor acquisition temperature preset temperature range it
When interior, the control circuit records duration of the temperature within preset temperature range；
When the folding condition of the switch is in an open state and the duration of the record reaches preset duration threshold value, the control
Circuit processed switches to the state for stopping being heated to the heater strip.
3. electric iron according to claim 2, it is characterised in that,
The control circuit includes microcontroller, and the microcontroller includes temperature sensor input port, temperature sensor output
Mouth, timer enable mouth and timer delivery outlet, wherein：Temperature sensor input port is used to obtain the temperature of the acquisition, temperature
Sensor delivery outlet is spent to be used to export first control signal according to the temperature of the acquisition；
Timer enables mouth and is used to start or stop timing according to the folding condition and the first control signal of the switch, counts
When device delivery outlet be used for according to the duration of the record export second control signal；The heating strip control circuit is used for basis and opens
The folding condition of pass, first control signal, second control signal, which start or stop, heats the heater strip.
4. electric iron according to claim 3, which is characterized in that the control circuit further includes：First logic gates,
Second logic gates, third logic gates；The control circuit is also used to be exported according to the folding condition of the switch and open
Close control signal；The switch control signal and the first control signal input two of first logic gates respectively
Input terminal；
The output end of the third logic gates connects an input terminal of second logic gates, the switch control
Signal inputs another input terminal of second logic gates；
The temperature sensor delivery outlet and timer delivery outlet are separately connected two input terminals of the third logic gates；
The output end of first logic gates connects the timer and enables mouth；
The heating strip control circuit for being started according to the folding condition of switch, first control signal, second control signal or
The heater strip is heated in stopping, including：
The heating strip control circuit is used for the signal of the output end according to second logic gates, starts or stops to institute
Heater strip is stated to be heated.
5. electric iron according to claim 4, which is characterized in that first logic gates is AND gate circuit, described
Second logic gates is AND gate circuit, and the third logic gates is NAND gate circuit；
When the switch is closed, the switch control signal is high level signal；When the switch is open, the switch control
Signal processed is low level signal；
When the temperature of the acquisition is within the preset temperature range, the first control signal is high level signal；When
For the temperature of the acquisition when except the preset temperature range, the first control signal is low level signal；
When the first control signal is high level signal, the control circuit starts timing, when the first control signal
When for low level signal, the control circuit stops timing；When the control circuit just in timing and the record when be up to
When to the preset duration threshold value, the second control signal is high level signal；When the control circuit not in timing or
For person just when the duration of timing but the record does not reach the preset duration threshold value, the second control signal is low electricity
Ordinary mail number.
6. electric iron according to claim 4, it is characterised in that：The heating strip control circuit includes a first crystal
Pipe, a relay and a diode continuousing flow circuit, after one group of normally opened contact of the relay is connected with the heater strip, connection
Between the positive and negative anodes of external power supply；
The grid of the first transistor is the input terminal of the heating strip control circuit, the drain electrode of the first transistor and institute
The control coil one end for stating relay is connected, the source electrode of the first transistor ground connection, the control coil of the relay it is another
One end is connected with the external power supply anode, and the diode continuousing flow circuit in parallel is at the control coil both ends of the relay.
7. electric iron according to claim 2, which is characterized in that it further include switch card slot, heat insulation, spring, wherein：
The switch card slot is fixed on the outer casing inner wall of the electric iron, and the switch is arranged in the switch card slot, described
Switch is electrically connected to the control circuit, and heat insulation is arranged in one end of the heater strip, between the heat insulation and the switch
The spring is set.
8. electric iron according to claim 1, it is characterised in that：The circuit board further includes buzzer circuit, wherein：When
When the duration of the record reaches preset duration threshold value, the control circuit controls the buzzer circuit and starts or stops bee
The device that rings is alarmed.
9. electric iron according to claim 1, which is characterized in that further include retainer ring and card slot, the card slot is arranged in institute
The outer surface of outer cover for stating electric iron, for clamping the retainer ring.
10. electric iron according to claim 1, it is characterised in that：It further include electric iron control box, the circuit board setting
In electric iron control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069354.6A CN108838488A (en) | 2018-09-13 | 2018-09-13 | A kind of electric iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069354.6A CN108838488A (en) | 2018-09-13 | 2018-09-13 | A kind of electric iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108838488A true CN108838488A (en) | 2018-11-20 |
Family
ID=64189605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811069354.6A Pending CN108838488A (en) | 2018-09-13 | 2018-09-13 | A kind of electric iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108838488A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110977084A (en) * | 2019-12-25 | 2020-04-10 | 深圳新飞通光电子技术有限公司 | Integrated electric soldering iron device and system |
| CN111375862A (en) * | 2018-12-27 | 2020-07-07 | 固安北信铁路信号有限公司 | Bad warning circuit of preventing welding |
| CN111745249A (en) * | 2019-03-26 | 2020-10-09 | Ok国际公司 | Variable temperature controlled soldering iron |
| CN112427765A (en) * | 2020-11-18 | 2021-03-02 | 武汉虹信科技发展有限责任公司 | Intelligent electric soldering system and electric soldering production management method |
| CN113275692A (en) * | 2020-02-20 | 2021-08-20 | 台达电子工业股份有限公司 | Soldering iron management system and method |
| CN113920936A (en) * | 2021-10-18 | 2022-01-11 | 京东方科技集团股份有限公司 | Signal monitoring circuit, display control circuit and display device |
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