CN202205335U - USB (universal serial bus) flash disk reminding device - Google Patents
USB (universal serial bus) flash disk reminding device Download PDFInfo
- Publication number
- CN202205335U CN202205335U CN2011203655172U CN201120365517U CN202205335U CN 202205335 U CN202205335 U CN 202205335U CN 2011203655172 U CN2011203655172 U CN 2011203655172U CN 201120365517 U CN201120365517 U CN 201120365517U CN 202205335 U CN202205335 U CN 202205335U
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- triode
- usb flash
- power supply
- sound
- flash disk
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Abstract
The utility model discloses a USB (universal serial bus) flash disk reminding device, relates to an electronic circuit device, in particular relates to an electronic device for providing sound remind after a portal memory (or U disk for short) is separated, and belongs to the international class number G08B21/24 of IPC (International Patent Classification). The USB flash disk reminding device disclosed by the utility model is arranged in a shell cap body of a USB flash disk, and comprises a power supply, a sound reminding circuit, an elastic piece switch and an electronic sound generator, wherein the power supply is connected in series with the elastic piece switch and electrically connected with a power input port of the sound reminding circuit; a sound driving output port of the sound reminding circuit is electrically connected with the electronic sound generator; when the USB interface of the U disk body is inserted into the shell cap body, the elastic piece of the elastic piece switch is pushed open to turn off the switch; and when the USB interface is pulled out from the shell cap body, the elastic piece is reset for contract to turn on the switch. The USB flash disk reminding device disclosed by the utility model can be applied to a USB flash disk so as to realize sound remind when the U disk body is separated.
Description
Technical field
The utility model relates to electronic-circuit device, relates in particular to the electronic installation that carries out sound prompting that is used for after pocket memory (or being called for short USB flash disk) breaks away from, and the IPC ICL can belong to G08B21/18.
Background technology
USB flash disk, full name " USB flash drive ", English name " USB flash disk ".It is the miniature high power capacity mobile storage product that need not phisical drive of a USB interface, can be connected with computer through USB interface, realizes plug and play.Therefore, dailyly use in a large number for people.USB flash disk generally includes the USB flash disk body and inserts in the shell cap body on the USB interface of USB flash disk body, is provided with passive electronic data memory device in the USB flash disk body.
People extract shell cap body when using USB flash disk from the USB interface of USB flash disk body, insert computer or other electronic equipments then and use.People are usually owing to be busy with issued transaction, and cause the shell cap body of USB flash disk to be positioned over forgetting on the table taking.Therefore, it is that the anti-lost USB flash disk cap of CN201499401U proposes a kind of patent scheme that a Chinese patent publication number is arranged, and on the USB flash disk cap, is provided with the hole nose, and the hole nose is provided with frenulum, and the tether on the other end of frenulum and the USB flash disk main body links.After pulling up the USB flash disk cap from the USB flash disk main body during use, the USB flash disk cap is still linked together by frenulum and USB flash disk main body.Can prevent losing of USB flash disk cap, improve work efficiency.
Though this patent scheme has solved the problem that the USB flash disk cap is lost, yet the problem that has groups of people to occur is: the USB flash disk main body is retained in the socket of computer socket or other electronic equipments, and forgets and extract.Perhaps, the somebody loses for preventing the USB flash disk cap, when using USB flash disk, is received in the USB flash disk cap in the bag earlier, after being to use, but forgets equally from the socket of computer or other electronic equipments and extracts the USB flash disk main body.Cause like this being easy to cause, the loss of data in the USB flash disk perhaps is stolen.In present communication society, important information data is vital.
The utility model content
Therefore, the utility model proposes a kind of USB flash drive alarm set to above-mentioned problem.Through this USB flash drive alarm set, can pass through sound prompting USB flash drive (USB flash disk) user, insert in computer or other electronic equipments and forget and extract to prevent the USB flash disk main body.
The technical scheme that the utility model adopts is:
A kind of USB flash drive alarm set; Be arranged at the shell cap body of USB flash drive; Comprise a power supply source, a sound prompting circuit, an elastic sheet switch and an electronic sound generator, be electrically connected on the power input mouth of sound prompting circuit behind the above-mentioned power supply source series connection elastic sheet switch, the sound driver output port of this sound prompting circuit is electrically connected on above-mentioned electronic sound generator; When above-mentioned elastic sheet switch inserts shell cap body at the USB interface of USB flash disk body; Shell fragment is open and cut-off switch, and when USB interface was extracted shell cap body, shell fragment was replied contact and Closing Switch.
Further; Described sound prompting circuit comprises that a singlechip chip U1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the first triode Q1 and the second triode Q2 form; The first triode Q1 is the NPN triode; The second triode Q2 is the PNP triode, and the VCC port of singlechip chip U1 and GND port connect the positive and negative electrode of above-mentioned power supply source respectively, the I/O port of the base stage order sheet machine chip U1 of the first triode Q1; First resistance R, 1 one ends link to each other with the positive pole of above-mentioned power supply source; The other end is connected between the emitter and second resistance R 2 of the first triode Q1, and second resistance R, 2 one ends link to each other with the emitter of the first triode Q1, and the other end connects the negative pole of above-mentioned power supply source; The positive pole of the power supply source that the 3rd resistance R 3 one terminations are above-mentioned; Another termination first triode Q1 the base stage of collector and the second triode Q2 between, the emitter of the second triode Q2, the negative pole of the collector of the second triode Q2 and above-mentioned power supply source is the sound driver output port of this sound prompting circuit.
Further, described singlechip chip U1 is the EM78P153 chip.
Further, described power supply source is a battery.
Further, described battery is slim button cell.
Further, described electronic sound generator is a hummer.
The technical scheme of the utility model is the alarm set that the utility model is set at the shell cap body of USB flash drive; This device is for the sound prompting circuit working current to be provided by a power supply source; Drive the electronic sound generator alarm of sounding through this sound prompting circuit, and carry out the switching that the conducting of working current is also turn-offed by elastic sheet switch.At ordinary times, when the USB interface of USB flash disk body inserted shell cap body, the shell fragment of elastic sheet switch was open and cut-off switch, and the sound prompting circuit does not obtain working current, can't drive electronic sound generator work.When people when using USB flash drive; The USB interface of USB flash disk body is when extracting shell cap body; The shell fragment of elastic sheet switch is replied contact and Closing Switch, and the sound prompting circuit obtains working current, and regularly drives the electronic sound generator alarm of sounding according to the time of setting; Be in the state of extracting with prompting user USB flash disk, thereby turn back in the shell cap body of USB flash drive after noting using.Like this, instant user forgets from computer or other electronic products and extracts the USB flash disk body, as long as in its bag or also leave the shell cap body of the USB flash drive alarm set that has the utility model in the key chain, just can remember, extracts the USB flash disk body and return.Therefore, the USB flash drive alarm set of the utility model is avoided on can be largely the USB flash disk main body to insert in computer or other electronic equipments and is forgotten the problem of extracting the loss of data that is caused.
Description of drawings
Fig. 1 is the electrical schematic diagram of the utility model.
Embodiment
Combine accompanying drawing and embodiment that the utility model is further specified at present.
The USB flash drive alarm set of the utility model is the shell cap body that is arranged at USB flash drive; Comprise a power supply source, a sound prompting circuit, an elastic sheet switch and an electronic sound generator; Be electrically connected on the power input mouth of sound prompting circuit behind the above-mentioned power supply source series connection elastic sheet switch; The sound driver output port of this sound prompting circuit is electrically connected on above-mentioned electronic sound generator, and when above-mentioned elastic sheet switch inserted shell cap body at the USB interface of USB flash disk body, shell fragment was open and cut-off switch; When USB interface was extracted shell cap body, shell fragment was replied contact and Closing Switch.
Consult shown in Figure 1; Described sound prompting circuit comprises that a singlechip chip U1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the first triode Q1 and the second triode Q2 form; The first triode Q1 is the NPN triode; The second triode Q2 is the PNP triode, and the VCC port of singlechip chip U1 and GND port connect the positive and negative electrode of above-mentioned power supply source respectively, the I/O port of the base stage order sheet machine chip U1 of the first triode Q1; First resistance R, 1 one ends link to each other with the positive pole of above-mentioned power supply source; The other end is connected between the emitter and second resistance R 2 of the first triode Q1, and second resistance R, 2 one ends link to each other with the emitter of the first triode Q1, and the other end connects the negative pole of above-mentioned power supply source; The positive pole of the power supply source that the 3rd resistance R 3 one terminations are above-mentioned; Another termination first triode Q1 the base stage of collector and the second triode Q2 between, the emitter of the second triode Q2, the negative pole of the collector of the second triode Q2 and above-mentioned power supply source is the sound driver output port of this sound prompting circuit.Wherein, the resistance of said first resistance R 1, second resistance R 2, the 3rd resistance R 3 can be set to 100 kilohms, 10 kilohms and 10 kilohms respectively, and said power supply source is the 5V direct supply.
The principle of work of above-mentioned sound prompting circuit is: when the user extracted use with the USB flash disk body, elastic sheet switch K1 was closed, the power supply normal power supply; Singlechip chip U1 works on power, and singlechip chip U1 regularly produces pulse signal by the output of I/O port according to the setting of program, control the first triode Q1 conducting; When the first triode Q1 conducting; The base stage of the second triode Q2 is 2.5V after second resistance R 2 and the 3rd R 3 dividing potential drops, and the therefore second triode Q2 conducting then drives electronic sound generator BELL work; Regularly remind user's USB flash disk body to be in the state of extracting, note turning back to.
Preferably; Described singlechip chip U1 is the EM78P153 chip, and the EM78P153 chip is the singlechip chip of low-power consumption of a 14 pin of Taiwan Yi Long company, can realize that not only multiple alert program sets; And the power consumption I is with long-time use, to avoid that power supply source is caused excessive burden.
Preferably, described power supply source is a battery.Preferred, described battery is slim button cell.Slim button cell is more suitable for being installed in the shell cap body of USB flash drive because volume is littler.Certainly, also can select for use the rechargeable lithium battary of thin skin type to realize.
Preferably, described electronic sound generator is a hummer, and the hummer volume is little, cost is low, and the scheme that is fit to the USB flash drive alarm set of the utility model is selected for use.Certain, electronic sound generator also can adopt other small-sized electricity to cause generating device except that hummer, and like the microminiature electric bell etc., but its cost is higher.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the scope of the principle explanation of the utility model that does not break away from appended claims and limited and technology limiting; Can make various variations to the utility model in form with on the details, be the protection domain of the utility model.
Claims (6)
1.USB flash disk alarm set; It is characterized in that: the shell cap body that is arranged at USB flash drive; Comprise a power supply source, a sound prompting circuit, an elastic sheet switch and an electronic sound generator, be electrically connected on the power input mouth of sound prompting circuit behind the above-mentioned power supply source series connection elastic sheet switch, the sound driver output port of this sound prompting circuit is electrically connected on above-mentioned electronic sound generator; When above-mentioned elastic sheet switch inserts shell cap body at the USB interface of USB flash disk body; Shell fragment is open and cut-off switch, and when USB interface was extracted shell cap body, shell fragment was replied contact and Closing Switch.
2. USB flash drive alarm set according to claim 1; It is characterized in that: described sound prompting circuit comprises that a singlechip chip U1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the first triode Q1 and the second triode Q2 form; The first triode Q1 is the NPN triode; The second triode Q2 is the PNP triode, and the VCC port of singlechip chip U1 and GND port connect the positive and negative electrode of above-mentioned power supply source respectively, the I/O port of the base stage order sheet machine chip U1 of the first triode Q1; First resistance R, 1 one ends link to each other with the positive pole of above-mentioned power supply source; The other end is connected between the emitter and second resistance R 2 of the first triode Q1, and second resistance R, 2 one ends link to each other with the emitter of the first triode Q1, and the other end connects the negative pole of above-mentioned power supply source; The positive pole of the power supply source that the 3rd resistance R 3 one terminations are above-mentioned; Another termination first triode Q1 the base stage of collector and the second triode Q2 between, the emitter of the second triode Q2, the negative pole of the collector of the second triode Q2 and above-mentioned power supply source is the sound driver output port of this sound prompting circuit.
3. USB flash drive alarm set according to claim 2 is characterized in that: described singlechip chip U1 is the EM78P153 chip.
4. USB flash drive alarm set according to claim 1 and 2 is characterized in that: described power supply source is a battery.
5. USB flash drive alarm set according to claim 4 is characterized in that: described battery is slim button cell.
6. USB flash drive alarm set according to claim 1 and 2 is characterized in that: described electronic sound generator is a hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203655172U CN202205335U (en) | 2011-09-22 | 2011-09-22 | USB (universal serial bus) flash disk reminding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203655172U CN202205335U (en) | 2011-09-22 | 2011-09-22 | USB (universal serial bus) flash disk reminding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202205335U true CN202205335U (en) | 2012-04-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203655172U Expired - Fee Related CN202205335U (en) | 2011-09-22 | 2011-09-22 | USB (universal serial bus) flash disk reminding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202205335U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915621A (en) * | 2012-10-18 | 2013-02-06 | 夏婷 | Anti-loss universal serial bus (USB) flash drive |
| CN104318729A (en) * | 2014-11-19 | 2015-01-28 | 成都双奥阳科技有限公司 | Losing preventing USB flash disk |
| CN104810044A (en) * | 2015-05-07 | 2015-07-29 | 东北大学 | Extensible USB (universal serial bus) flash disk |
| CN104851443A (en) * | 2015-04-30 | 2015-08-19 | 苏州锟恩电子科技有限公司 | Anti-loss USB (Universal Serial Bus) flash disk |
-
2011
- 2011-09-22 CN CN2011203655172U patent/CN202205335U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915621A (en) * | 2012-10-18 | 2013-02-06 | 夏婷 | Anti-loss universal serial bus (USB) flash drive |
| CN104318729A (en) * | 2014-11-19 | 2015-01-28 | 成都双奥阳科技有限公司 | Losing preventing USB flash disk |
| CN104851443A (en) * | 2015-04-30 | 2015-08-19 | 苏州锟恩电子科技有限公司 | Anti-loss USB (Universal Serial Bus) flash disk |
| CN104810044A (en) * | 2015-05-07 | 2015-07-29 | 东北大学 | Extensible USB (universal serial bus) flash disk |
| CN104810044B (en) * | 2015-05-07 | 2017-06-13 | 东北大学 | A kind of expansible USB flash drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20120922 |