CN2692937Y - Anti-theft cell phone cover - Google Patents
Anti-theft cell phone cover Download PDFInfo
- Publication number
- CN2692937Y CN2692937Y CN 200420033184 CN200420033184U CN2692937Y CN 2692937 Y CN2692937 Y CN 2692937Y CN 200420033184 CN200420033184 CN 200420033184 CN 200420033184 U CN200420033184 U CN 200420033184U CN 2692937 Y CN2692937 Y CN 2692937Y
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- CN
- China
- Prior art keywords
- phone cover
- pin
- alarm
- switch
- circuit
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- Expired - Fee Related
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Abstract
The utility model discloses an anti-theft cell phone cover composed of a cell phone cover and an alarm device which is arranged on the inner bottom of the cell phone cover or on the inner side surface of the cell phone cover. The utility model comprises a shell, an electronic alarm circuit in the shell, a vibrator which is controlled by the electronic alarm circuit and is movably connected with a vibrator support, and a safety button and an alarm button which are respectively connected with a safety switch and an alarm switch. The upper end of the shell also is provided with a cover plate. The anti-theft cell phone cover has the advantages of reasonable design, easy use, quickness, and good safety performance. The anti-theft cell phone cover does not affect the original using habit on basic. The anti-theft cell phone cover can sense sensitively the alarm signal even in the noisy environment.
Description
Technical field the utility model relates to a kind of cell-phone cover, particularly has the cell-phone cover of alarming anti-theft function.
Background technology is along with the progress of society, the development of communication career, and mobile phone is popularized rapidly, becomes communication tool indispensable in people's live and work day by day.Yet in public, the stolen incident of mobile phone often takes place but, cause great economy and information material loss to the machine master.Existing antitheft mobile phone cover, though can play certain warning effect, under the situation that a riot of sound, environmental disorder etc. had things stolen easily, anti-theft effect is also bad, mainly has the following disadvantages by analysis:
1, warning circuit adopts commercially available music integrated circuit to assemble, and under the situation that the noise background is arranged, is difficult to listen obtain the music of reporting to the police, thereby does not have the effect of warning;
2, power supply adopts button cell, because voltage is low, capacity is little, is difficult to improve warning intensity.
3, various control switch fixed-site, shortcoming confidentiality, and pick and place mobile phone and all need toggle switch is so not only used inconveniently, in case forget about switch power supply, also will lose anti-theft feature.
Summary of the invention is at the defective and the deficiency of prior art, and the purpose of this utility model is to provide a kind of reasonable in design, easy to use, antitheft mobile phone cover that the warning performance is good.
The technical solution of the utility model is as follows: a kind of antitheft mobile phone cover, constitute by cell-phone cover and warning device, described warning device places in the cell-phone cover at the end, and it comprises electronic alarm circuit in housing, the housing, the oscillator that flexibly connects by electronic alarm circuit control and with the oscillator support and the safety switch and the alarm button that are connected with alarm switch with safety switch respectively; Cover plate also is equipped with in described housing upper end; Described electronic alarm circuit adopts 555 circuit as delay circuit and electronic switch control circuit, in-phase input end 5 pin link to each other with 6 pin, earth terminal 1 pin is connected with power-, be connected to capacitor C between 1 pin and inverting input 2 pin, touch-switch k6 just links to each other with power supply with power end 8 pin respectively, 2 pin and power supply are connected with safety switch k1 between just, the positive pole of diode D links to each other with output 3 pin of 555 circuit, negative pole connects resistance R 1 successively, triode Q base stage, triode Q collector electrode connects the oscillator resistance R _ f successively, resistance R 2 and power supply just, emitter is connected with power-; An end just links to each other with power supply after the described alarm switch parallel connection, and the other end is connected between diode D negative pole and the resistance R 1.
The utility model is reasonable in design, and is easy to use, quick, do not influence original use habit substantially, and security performance is good, even also can experience alarm signal delicately in noisy environment.
Description of drawings is further described the utility model below in conjunction with accompanying drawing:
Fig. 1 is a upward view of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is a warning device front view of the present utility model.
Fig. 4 is a warning device vertical view of the present utility model.
Fig. 5 is circuit theory diagrams of the present utility model.
Embodiment is shown in accompanying drawing 1-5, a kind of antitheft mobile phone cover, constitute by cell-phone cover 1 and warning device 2, described warning device 2 is fixed on cell-phone cover by screw 10 at 1 the interior end, it comprises electronic alarm circuit 4 in the housing 3, housing 3, by electronic alarm circuit 4 controls and the oscillator 6 that flexibly connects with oscillator support 5, and the safety switch 7 and the alarm button 8 that are connected with alarm switch with safety switch respectively; Cover plate 9 also is equipped with in housing 3 upper ends; Described electronic alarm circuit 4 adopts 555 circuit as delay circuit and electronic switch control circuit, high-energy battery is as power supply, in-phase input end 5 pin link to each other with 6 pin, earth terminal 1 pin is connected with power-, be connected to capacitor C between 1 pin and inverting input 2 pin, touch-switch k6 just links to each other with power supply with power end 8 pin respectively, 2 pin and power supply are connected with safety switch k1 between just, the positive pole of diode D links to each other with output 3 pin of 555 circuit, negative pole connects resistance R 1 successively, triode Q base stage, triode Q collector electrode connects the oscillator resistance R _ f successively, resistance R 2 and power supply just, emitter is connected with power-; An end just links to each other with power supply after the described alarm switch parallel connection, and the other end is connected between diode D negative pole and the resistance R 1.Warning device 2 of the present utility model can also place on cell-phone cover 1 medial surface; Safety switch 7 and alarm button 8 can be built-in, also can pass cell-phone cover 1 leather and place cell-phone cover 1 outside; Alarm button can be provided with 2-8, and alarm switch corresponding with it also can be provided with 2-8.In the present embodiment, alarm switch has four, is respectively k2-k5.
Operation principle: when mobile phone places in the cell-phone cover, depress cover plate 9, open state thereby make touch-switch k6 be in normal off.When need take out mobile phone, press safety switch 7, safety switch k1 closure, capacitor C is charged to supply voltage rapidly, effect through 555 internal circuits, in-phase input end (5,6 pin) there is certain proportionate relationship within a certain period of time with inverting input 2 pin, capacitor C voltage progressively discharges by 555 internal circuits, takes out mobile phone during this period of time, and cover plate 9 resets, make touch-switch k6 closure, but because 2 pin remain high level, so 3 pin are still low level, triode Q ends, this moment, at this moment capacitor C formed a delay circuit by the high internal resistance between 2 pin to 1 pin owing to the closure of touch-switch k6; Click safety switch 7 again, switch k1 disconnects, and also can obtain long delay.If just take out mobile phone not according to safety switch 7, touch-switch k6 closure, this moment, 2 pin were low level, and 3 pin outputs are high level, and triode Q conducting makes oscillator 6 send alarm signal; Equally, be safety switch if which is not known, press any one alarm button and all can make the alarm switch closure, turn-on transistor Q makes oscillator 6 send the vibration alarming signal.
Claims (5)
1, a kind of antitheft mobile phone cover, constitute by cell-phone cover (1) and warning device (2), it is characterized in that: described warning device (2) places cell-phone cover (1) at interior the end, and it comprises electronic alarm circuit (4) in the housing (3), housing (3), the oscillator (6) that flexibly connects by electronic alarm circuit (4) control and with oscillator support (5) and the safety switch (7) and the alarm button (8) that are connected with alarm switch with safety switch respectively; Cover plate (9) also is equipped with in described housing (3) upper end; Described electronic alarm circuit (4) adopts 555 circuit as delay circuit and electronic switch control circuit, in-phase input end 5 pin link to each other with 6 pin, earth terminal 1 pin is connected with power-, be connected to capacitor C between 1 pin and inverting input 2 pin, touch-switch k6 just links to each other with power supply with power end 8 pin respectively, 2 pin and power supply are connected with safety switch k1 between just, the positive pole of diode D links to each other with output 3 pin of 555 circuit, negative pole connects resistance R 1 successively, triode Q base stage, triode Q collector electrode connects the oscillator resistance R _ f successively, resistance R 2 and power supply just, emitter is connected with power-; An end just links to each other with power supply after the described alarm switch parallel connection, and the other end is connected between diode D negative pole and the resistance R 1.
2, antitheft mobile phone cover according to claim 1 is characterized in that: described warning device (2) can also place on cell-phone cover (1) medial surface.
3, antitheft mobile phone cover according to claim 1 is characterized in that: described safety switch (7) and alarm button (8) can be built-in, also can pass cell-phone cover (1) leather and place cell-phone cover (1) outside.
4, antitheft mobile phone cover according to claim 1 is characterized in that: described alarm button can be provided with 2-8, and the alarm switch corresponding with it also can be provided with 2-8.
5, antitheft mobile phone cover according to claim 1 is characterized in that: described electronic alarm circuit (4) adopts high-energy battery as power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033184 CN2692937Y (en) | 2004-03-09 | 2004-03-09 | Anti-theft cell phone cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033184 CN2692937Y (en) | 2004-03-09 | 2004-03-09 | Anti-theft cell phone cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2692937Y true CN2692937Y (en) | 2005-04-13 |
Family
ID=34772720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420033184 Expired - Fee Related CN2692937Y (en) | 2004-03-09 | 2004-03-09 | Anti-theft cell phone cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2692937Y (en) |
-
2004
- 2004-03-09 CN CN 200420033184 patent/CN2692937Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |