CN201529820U - Automatic protection mechanism for electric soldering iron - Google Patents
Automatic protection mechanism for electric soldering iron Download PDFInfo
- Publication number
- CN201529820U CN201529820U CN2009203084022U CN200920308402U CN201529820U CN 201529820 U CN201529820 U CN 201529820U CN 2009203084022 U CN2009203084022 U CN 2009203084022U CN 200920308402 U CN200920308402 U CN 200920308402U CN 201529820 U CN201529820 U CN 201529820U
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- electric iron
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Abstract
The utility model provides an automatic protection mechanism for an electric soldering iron, which comprises magnet arranged on a bracket of the electric soldering iron, an automatic protection circuit that is arranged on a circuit board in the electric soldering iron and comprises a power circuit, a magnetic induction circuit electrically connected with the power circuit, a control circuit respectively and electrically connected with the magnetic induction circuit and the power circuit, a delay relay device respectively and electrically connected with the control circuit and the power circuit, and a heating device electrically connected with the relay delay relay device. Therefore, after being used, the electric soldering iron is put on the bracket; and after inducing a magnetic field, the magnetic induction circuit sends an induction signal to the control circuit, and the control circuit controls the delay relay device to be disconnected within a certain period of time so as to lead a head of the electric soldering iron to stop heating, thus achieving the purpose of automatic protection.
Description
[technical field]
The utility model relates to a kind of field of electric iron, particularly about a kind of electric iron automatic protective mechanism.
[background technology]
Common electric iron is in case after the energising, heating tube will be in "on" position always, and actual welding time much smaller than conduction time, because continue the apolegamy element again or search fault etc. after welding what a element, so not only caused the waste of the energy but also easily brought difficulty to welding, unreasonable the causing of all present electric iron structural design of above defective because of the long-time continuous high temperature of electric iron is difficult for tining.Some improvement have also appearred at present, for example representative: the patent No. of announcing on May 26th, 1999 is 97248086.2 Chinese patent, the patent No. of on August 18th, 1999 bulletin is that 98217158.7 Chinese patent has all been announced electric iron that can be energy-conservation, is deenergization if certain hour does not use in the electric iron galvanization.
Yet, in the disclosed technical scheme of above-mentioned patent, all be the switch of controlling power supply by a hand push button, this way has not only increased extra operational motion, and may can't reach the purpose of real saves energy because think that the carelessness two of operation forgets deenergization.
[summary of the invention]
In view of this, the purpose of this utility model is to provide a kind of electric iron automatic protective mechanism, thereby makes electric iron cut off the electricity supply automatically behind out-of-work certain hour.
For achieving the above object, the utility model provides a kind of electric iron automatic protective mechanism, and it comprises:
A magnet, it is located on the support of an electric iron;
An automatic protection circuit, it is located on the interior circuit board of electric iron, and it comprises a power circuit; A magnetic conduction circuitry, itself and above-mentioned power circuit electrically connect; A control circuit, it electrically connects with above-mentioned magnetic conduction circuitry, power circuit respectively; A time-delay relay system, it electrically connects with above-mentioned control circuit, power circuit respectively; A heater, itself and above-mentioned time-delay relay system electrically connect.
Thus; this automatic protective mechanism is put in electric iron on the above-mentioned support after opening; above-mentioned magnetic conduction circuitry induction has a magnetic field; above-mentioned magnetic conduction circuitry sends an induced signal to above-mentioned control circuit; above-mentioned control circuit is controlled above-mentioned time-delay relay system and is disconnected in certain hour; make electric soldering bit stop heating, thereby reach the purpose of automatic protection.
Compared to prior art, electric iron automatic protective mechanism provided by the utility model makes electric iron cut off the electricity supply automatically behind out-of-work certain hour, thereby reaches the purpose of real saves energy.
[description of drawings]
Fig. 1 is the frame principle figure of the automatic protection circuit of the utility model electric iron automatic protective mechanism.
Fig. 2 is the circuit theory diagrams of the automatic protection circuit of the utility model electric iron automatic protective mechanism.
Fig. 3 is the perspective view of the utility model electric iron automatic protective mechanism.
[specific embodiment]
See also shown in the perspective view of circuit theory diagrams, Fig. 3 the utility model electric iron automatic protective mechanism of automatic protection circuit of frame principle figure, Fig. 2 the utility model electric iron automatic protective mechanism of the automatic protection circuit of Fig. 1 the utility model electric iron automatic protective mechanism; this electric iron automatic protective mechanism, it comprises:
A magnet 6, it is located on the support 7 of an electric iron;
An automatic protection circuit (Fig. 2), it is located on the interior circuit board of electric iron, and it comprises:
A power circuit 1, this power circuit 1 comprises a rectifier 10, itself and a 220V alternating voltage electrically connect, and by the processing of above-mentioned rectifier 10 above-mentioned 220V alternating voltage are changed into a 12V DC voltage; A SOT223 integrated circuit, itself and above-mentioned rectifier 10 electrically connects, and the processing by this SOT223 integrated circuit changes into the 3V DC voltage with above-mentioned 12V DC voltage;
A magnetic conduction circuitry 2, itself and above-mentioned power circuit 1 electrically connect, and it comprises a SOT23N integrated circuit, and its voltage input end and above-mentioned 3V DC voltage electrically connect, its earth terminal ground connection;
A control circuit 3, it electrically connects with above-mentioned magnetic conduction circuitry 2, power circuit 1 respectively, this control circuit 3 comprises a switch SW 2, this switch SW 2 comprises one first stitch 30, one second stitch 31, the 3rd stitch 32, and the voltage output end of above-mentioned second stitch 32 and above-mentioned SOT23N integrated circuit electrically connects; A N-MOS pipe (N type FET), first stitch 30 of its grid and above-mentioned switch SW 2 electrically connects, and above-mentioned 3V DC voltage is connected between first stitch 30 of this grid and above-mentioned switch SW 2 source ground of this N-MOS pipe; A P-MOS pipe (P type FET), the drain electrode of its grid and above-mentioned N-MOS pipe electrically connects, and its source electrode and above-mentioned 12V DC voltage electrically connect;
A time-delay relay system 4, it is a time-delay relay 4, it electrically connects with the drain electrode of above-mentioned 220V alternating voltage, above-mentioned P-MOS pipe respectively;
A heater 5, itself and above-mentioned time-delay relay system 4 electrically connect.
Its operation principle is as follows:
When switch SW 2 is allocated to first stitch 30, the automatic protection circuit of this electric iron (Fig. 2) is opened, by the operating position of above-mentioned SOT23N integrated circuit sensing electric iron, when electric iron leaves support 7, described SOT23N integrated circuit sensing less than around magnetic field, its voltage output end will be exported a high level, the conducting of described N-MOS pipe, and its drain electrode output one low level, the conducting of therefore described P-MOS pipe, described time-delay relay 4 is opened, and electric iron is started working;
Magnetic field around electric iron is positioned on the support 7, and described SOT23N integrated circuit senses, its voltage output end will be exported a low level, and described N-MOS pipe ends, and described time-delay relay 4 disconnected after 30 seconds, and electric iron quits work;
When switch SW 2 was allocated to the 3rd stitch 32, the automatic protection circuit of this electric iron was closed.
Compared to prior art, automatic protection mechanism for electric soldering iron provided by the utility model so that electric iron automatic cut-off power behind out-of-work certain hour, thereby reaches the purpose of real saves energy.
Claims (5)
1. electric iron automatic protective mechanism is characterized in that it comprises:
A magnet, it is located on the support of an electric iron;
An automatic protection circuit, it is located on the interior circuit board of electric iron, and it comprises a power circuit; A magnetic conduction circuitry, itself and above-mentioned power circuit electrically connect; A control circuit, it electrically connects with above-mentioned magnetic conduction circuitry, power circuit respectively; A time-delay relay system, it electrically connects with above-mentioned control circuit, power circuit respectively; A heater, itself and above-mentioned time-delay relay system electrically connect.
2. electric iron automatic protective mechanism according to claim 1, it is characterized in that, described power circuit comprises a rectifier, and itself and a 220V alternating voltage electrically connect, and by the processing of above-mentioned rectifier above-mentioned 220V alternating voltage are changed into a 12V DC voltage; A SOT223 integrated circuit, itself and above-mentioned rectifier electrically connect, and the processing by this SOT223 integrated circuit changes into the 3V DC voltage with above-mentioned 12V DC voltage.
3. electric iron automatic protective mechanism according to claim 2 is characterized in that, described magnetic conduction circuitry comprises a SOT23N integrated circuit, and its voltage input end and above-mentioned 3V DC voltage electrically connect, its earth terminal ground connection.
4. electric iron automatic protective mechanism according to claim 3, it is characterized in that, described control circuit comprises a switch, this switch comprises one first stitch, second stitch, the 3rd stitch, and the voltage output end of above-mentioned second stitch and above-mentioned SOT23N integrated circuit electrically connects; A N-MOS pipe, first stitch of its grid and above-mentioned switch SW 2 electrically connects, and above-mentioned 3V DC voltage is connected between first stitch of this grid and above-mentioned switch SW 2 source ground of this N-MOS pipe; A P-MOS pipe, the drain electrode of its grid and above-mentioned N-MOS pipe electrically connects, and its source electrode and above-mentioned 12V DC voltage electrically connect.
5. electric iron automatic protective mechanism according to claim 4 is characterized in that, described time-delay relay system is a time-delay relay, and it electrically connects with the drain electrode of above-mentioned 220V alternating voltage, above-mentioned P-MOS pipe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203084022U CN201529820U (en) | 2009-08-20 | 2009-08-20 | Automatic protection mechanism for electric soldering iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203084022U CN201529820U (en) | 2009-08-20 | 2009-08-20 | Automatic protection mechanism for electric soldering iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201529820U true CN201529820U (en) | 2010-07-21 |
Family
ID=42525230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203084022U Expired - Lifetime CN201529820U (en) | 2009-08-20 | 2009-08-20 | Automatic protection mechanism for electric soldering iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201529820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992334A (en) * | 2009-08-20 | 2011-03-30 | 神讯电脑(昆山)有限公司 | Automatic protective system of electric soldering iron |
-
2009
- 2009-08-20 CN CN2009203084022U patent/CN201529820U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992334A (en) * | 2009-08-20 | 2011-03-30 | 神讯电脑(昆山)有限公司 | Automatic protective system of electric soldering iron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100721 Effective date of abandoning: 20090820 |
|
| RGAV | Abandon patent right to avoid regrant |