CN202607029U

CN202607029U - Wireless electric soldering iron

Info

Publication number: CN202607029U
Application number: CN 201220316482
Authority: CN
Inventors: 肖瑞; 黄海彬
Original assignee: Huizhou University
Current assignee: Huizhou University
Priority date: 2012-07-03
Filing date: 2012-07-03
Publication date: 2012-12-19
Anticipated expiration: 2022-07-03

Abstract

The utility model relates to wireless electric soldering iron which comprises a handle and a soldering iron head which is installed on the handle. An electronic circuit and a lithium battery are arranged in the handle, and the electronic circuit comprises a heating circuit, a charging circuit for charging the lithium battery, a low-voltage warning circuit, a low-voltage disconnection protection circuit and the like. The wireless electric soldering iron can be charged by being connected with an external power supply through a plug installed on the handle or can be charged by being connected with a charger through a charger interface. The chargeable lithium battery can be used for supplying power for the wireless electric soldering iron, so that the wireless electric soldering iron is portable, free from constraints of power lines and convenient to use; and the wireless electric soldering iron can be charged by two methods and has low-voltage disconnection protection and alarming functions, so that intelligent and human-friendly designs are increased, and the wireless electric soldering iron is safe and reliable during usage.

Description

A kind of radio flatiron

Technical field

The utility model relates to a kind of hand-held internal heat type radio flatiron.

Background technology

Existing hand-held inner heating type electric iron is made up of solder horn, iron core, plastic cement or wooden handle and power line.The power line of general electric iron is very long, and it is in disorder on operating table surface, to seem, electric iron is easy to scorch power line and near the article of electric iron; Perhaps power line is too short, but restriction user's opereating specification.The radio flatiron that occurs on the market all is a rifle shape generally, and volume is bigger, uses inconvenient; Charging modes is single, is not having under the situation of charger, can't be to battery charge; When battery electric quantity runs low, can not remind the user in time to charge in advance, use not enough hommization.

The utility model content

The problem that the utility model need solve provides a kind of can the charging and novel radio electric iron easy to use.

The technical scheme that the utility model adopted is: a kind of radio flatiron; Comprise handle, be installed on the solder horn on the handle; Be provided with the electronic circuit that comprises heater strip in the said handle; It is characterized in that: said flatiron adopts lithium battery power supply, and said electronic circuit also comprises the charging circuit that is used for to lithium cell charging, and this charging circuit connects external power source through the plug that is installed on the handle.

Preferably, also be provided with charger interface on the said handle, external charger can be lithium cell charging through this charging inlet.

Preferably, said electronic circuit further comprises the low pressure alarming circuit that is used to detect lithium battery voltage and under the low pressure situation, reports to the police.

Preferably, said electronic circuit further is included in lithium battery and forces down the low pressure breaking protection circuit that under the setting voltage situation, cuts off the lithium battery power supply circuit.

Compared with prior art, the beneficial effect of the utility model is:

(1) said electric iron adopts lithium battery power supply, is the portable wireless flatiron, has broken away from the constraint of power line, and is easy to use;

(2) said electric iron self has two kinds of charging modes, and has low pressure open circuit protection and warning function, has increased its intellectuality and human oriented design, uses more safe and reliable;

(3) said electric iron circuit design is simple, and components and parts are selected popular, are easy to be converted into product promotion.

Description of drawings

Fig. 1 is the utility model embodiment circuit theory diagrams;

Fig. 2 is the utility model example structure sketch map.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Like Fig. 2, the radio flatiron that the utility model disclosed comprises handle 2, is installed on the solder horn 1 on the handle, is provided with electronic circuit 4 and lithium battery 5 in the handle 2, and said electric iron adopts chargeable lithium cell 5 power supplies.

Said electronic circuit comprises heater circuit, be used for charging circuit, low pressure alarming circuit, low pressure breaking protection circuit to lithium cell charging etc.This charging circuit connects external power source through the plug 8 that is installed on the handle.Simultaneously, also be provided with charger interface 7 on the handle, external charger can be a lithium cell charging through this charging inlet 7 also.

Like Fig. 1, wherein, the low pressure alarming circuit comprises the potentiometer RP1 that is series between lithium battery output and the ground, and two voltage integrated comparator U1, said potentiometer RP1 the 3rd end connect first ratio in the integrated comparator U1

Than the inverting input of device, this comparator in-phase input end connects the 5V fixed voltage, and output connects a triode; Depress to drop to when lithium battery and make potentiometer RP1 the 3rd end output voltage be lower than the first comparator in-phase input end voltage below the certain voltage; Then first comparator output terminal is exported high level; Triode T1 conducting; Then indicator lamp D1 (among Fig. 2 shown in the label 3) is bright, and the buzzer B1 warning reminding user that pipes is lithium cell charging.Buzzer B1 one end connects transistor switching circuit; From the transistor switching circuit power taking; And the other end behind low pressure alarming, can pass through K switch 1 manual-lock buzzer B1 through K switch 1 (among Fig. 2 shown in the label 6) ground connection; Preventing to continue to pipe disturb around, and the still long bright user that reminding of indicator lamp D1.Wherein, The low pressure breaking protection circuit comprises the potentiometer RP2 that is series between lithium battery output and the ground; Two voltage integrated comparator U1, said potentiometer RP2 the 3rd end connects the inverting input of second comparator in the integrated comparator U1, and this comparator in-phase input end connects the 5V fixed voltage; Output connects a switching transistor VT, and switching transistor VT connects a relay K circuit; Heater circuit comprises a heater strip R5, No. 6 pin ground connection of relay K, and No. 1 pin connects the anode of 12V lithium battery, and No. 2 pin connect the end of electric iron heater strip R5, heater strip R5 other end ground connection.Depress to drop to when lithium battery and make potentiometer RP2 the 3rd end output voltage be lower than the second comparator in-phase input end voltage below the dangerous voltage; Then second comparator output terminal is exported high level; Transistor VT conducting; Then relay K is broken off lithium battery and heater strip, and lithium battery is carried out low-voltage variation, prevents that lithium battery from crossing to put damage.

Also comprise mu balanced circuit in the said electronic circuit; Mu balanced circuit adopts three terminal regulator LM7805; Its 1 pin is connected with the anode of 12V lithium battery and the anode of capacitor C 1, and 2 pin are connected with the negative electrode of capacitor C 1, C2, the negative electrode of 12V lithium battery, converts the 12V lithium battery output of to 5V voltage.3 pin of LM7805 are connected with the colelctor electrode of capacitor C 2 anodes, resistance R 2 other ends, triode T1, No. 3 pin of LM393, No. 5 pin of LM393,8 pin of LM393, the other end of resistance R 4, the colelctor electrode of transistor VT.

Claims

1. a radio flatiron comprises handle, is installed on the solder horn on the handle, establishes in the said handle

The electronic circuit that comprises heater circuit is arranged, it is characterized in that: said flatiron adopts the chargeable lithium cell power supply, and said electronic circuit also comprises the charging circuit that is used for to lithium cell charging, and this charging circuit connects external power source through the plug that is installed on the handle.

2. radio flatiron according to claim 1 is characterized in that: also be provided with charger interface on the said handle, external charger is a lithium cell charging through this charging inlet.

3. radio flatiron according to claim 1 is characterized in that: further comprise the low pressure alarming circuit that is used to detect lithium battery voltage and under the low pressure situation, reports to the police.

4. radio flatiron according to claim 3; It is characterized in that: said low pressure alarming circuit comprises the potentiometer RP1 that is series between lithium battery output and the ground; Two voltage integrated comparator U1; Said potentiometer RP1 the 3rd end connects the inverting input of first comparator in the integrated comparator U1, and this comparator in-phase input end connects fixed voltage, and output connects a transistor switching circuit; Depress to drop to when lithium battery and make potentiometer RP1 the 3rd end output voltage be lower than the first comparator in-phase input end voltage below the certain voltage, first comparator output terminal output high level then, triode T1 conducting, then indicator lamp D1 is bright, the buzzer B1 warning that pipes.

5. radio flatiron according to claim 4 is characterized in that: said buzzer B1 one end connects transistor switching circuit, and from the transistor switching circuit power taking, the other end is through K switch 1 ground connection.

6. radio flatiron according to claim 1 is characterized in that: further be included in lithium battery and force down the low pressure breaking protection circuit that under the setting voltage situation, cuts off the lithium battery power supply circuit.

7. radio flatiron according to claim 6; It is characterized in that: said low pressure breaking protection circuit comprises the potentiometer RP2 that is series between lithium battery output and the ground; Two voltage integrated comparator U1, said potentiometer RP2 the 3rd end connects the inverting input of second comparator in the integrated comparator U1, and this comparator in-phase input end connects fixed voltage; Output connects a switching transistor VT, and switching transistor VT connects a relay circuit; Depress to drop to when lithium battery and make potentiometer RP2 the 3rd end output voltage be lower than the second comparator in-phase input end voltage below the dangerous voltage, second comparator output terminal output high level then, transistor VT conducting, then relay breaks off lithium battery and heater circuit.