CN2431688Y - Burglar alarm for mobile phone - Google Patents

Abstract

The utility model discloses a burglar alarm for a mobile phone, composed of electric cells 1, a manual switch 2, a normally closed spring-return contact switch 3, a sound source chip 4 and a horn 5, wherein, the electric cells 1 are mutually connected in series and arranged in a shell 7; the horn 5 is connected to the output electrode of the sound source chip 4; the contact switch 3 is provided with a contact lever 6 which protrudes out of the shell 7. When the utility model is in use, the alarm needs to be stuck to a mobile phone cover and the contact lever 6 is protruded in the mobile phone cover. When users close the manual switch 2, the alarm is the operation state. If a mobile phone leaves the mobile phone cover, the contact lever 6 bounces to cause the contact switch 3 to close and be communicated with an alarm circuit. Alarm sounds are sent out in time to remind users to be aware of the safety of the mobile phone.

Description

Mobile phone burglar alarm

The utility model discloses a kind of mobile phone burglar alarm.

Universal day by day along with mobile phone; the hand-set from stolen case also rises year by year; brought inconvenience in the work and loss economically for stolen user; especially for the user who likes mobile phone is hung on one's waist; stolen easily especially; numerous cellphone subscribers press for a kind of device that can in time report to the police, with the safety of timely call user's attention mobile phone for guarding one's interest when hand-set from stolen.

The purpose of this utility model just is to provide a kind of mobile phone burglar alarm, and it should guarantee just can sound the alarm before mobile phone leaves cell-phone cover fully.

For achieving the above object, the utility model mobile phone burglar alarm is by battery, hand switch, touch switch, sound source chip, loudspeaker, connection line is formed, battery, hand switch, touch switch, the sound source chip formation warning circuit of connecting mutually, loudspeaker are connected on the output stage of sound source chip, touch switch is provided with feeler lever, closed or disconnection by feeler lever control touch switch, when depressing feeler lever, touch switch disconnects, and feeler lever is upspring automatically when unclamping feeler lever, the touch switch closure, during use, this alarm need be installed on the cell-phone cover, and wherein, the feeler lever on the touch switch stretches in the cell-phone cover.

After adopting such structure, because the feeler lever on the alarm touch switch stretches in the cell-phone cover, then depressing feeler lever when mobile phone inserts in the cell-phone cover to the feeler lever place disconnects touch switch, when mobile phone leaves feeler lever place in the cell-phone cover then feeler lever upspring and make the closed warning circuit of connecting of touch switch, sound the alarm, like this, when the burglar steals mobile phone, before leaving cell-phone cover fully, mobile phone just can sound the alarm, in addition, also can sound the alarm when slipping away cell-phone cover voluntarily as if mobile phone under special circumstances, in time the safety of call user's attention mobile phone.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the circuit theory diagrams of the specific embodiment of the utility model mobile phone burglar alarm.

Fig. 2 is the main cutaway view of mobile phone burglar alarm embodiment illustrated in fig. 1, and hand switch is in the close position among this figure.

Fig. 3 is the main cutaway view of mobile phone burglar alarm shown in Figure 2 when hand switch is in open position.

Fig. 4 is that mobile phone burglar alarm shown in Figure 2 is installed on the cell-phone cover and mobile phone inserts schematic diagram when depressing feeler lever in the cell-phone cover.

Fig. 5 is that mobile phone burglar alarm shown in Figure 2 is installed on the cell-phone cover and the schematic diagram of mobile phone after feeler lever is upspring when leaving feeler lever place in the cell-phone cover.

In circuit theory diagrams shown in Figure 1, the utility model mobile phone burglar alarm is made up of battery 1, hand switch 2, touch switch 3, sound source chip 4, loudspeaker 5, connection line, battery 1, hand switch 2, touch switch 3, sound source chip 4 are connected mutually, loudspeaker 5 are connected on the output stage of sound source chip 4, after hand switch 2 closures, alarm promptly enters operating state, this moment touch switch 3 disconnection or closed can corresponding disconnection or connect the circuit of alarm, thereby make on the loudspeaker 5 that are connected on sound source chip 4 output stages correspondingly noiseless or give the alarm.

Fig. 2 is the main cutaway view of the mobile phone burglar alarm that forms by the foregoing circuit principle diagram design, hand switch 2 is in the close position among this figure, Fig. 3 is the main cutaway view of mobile phone burglar alarm shown in Figure 2 when hand switch 2 is in open position, it comprises battery 1, hand switch 2, touch switch 3, sound source chip 4, loudspeaker 5 and connection line, touch switch 3 is normally closed spring-return switchs, touch switch 3 is provided with feeler lever 6, in addition, it also has a housing 7, housing 7 can adopt plastics or metal to make, change battery for convenience, the position of corresponding battery is provided with movable battery hatch on the housing 7, battery 1, hand switch 2, touch switch 3, sound source chip 4, loudspeaker 5 and connection line are installed in the housing 7, but the operating side of hand switch 2 should be positioned at outside the housing 7, feeler lever 6 on the touch switch 3 should stretch out outside the housing 7, and the feeler lever 6 on the operating side of hand switch 2 and the touch switch 3 should lay respectively on the different surfaces of housing 7, like this, when alarm with the housing 7 at feeler lever 6 places be surface mounted on the cell-phone cover time, the operating side of hand switch 2 can not covered by cell-phone cover.Because the element of the utility model mobile phone burglar alarm is less, battery 1 wherein can adopt button cell, and therefore the thickness of whole alarm can be made to such an extent that very thinly be beneficial to adopt the subsides formula to be installed on the cell-phone cover.

Fig. 4 and Fig. 5 are the schematic diagram of the utility model mobile phone burglar alarm when being installed on the cell-phone cover, wherein, Fig. 4 illustrates that also mobile phone inserts the state when depressing feeler lever 6 in the cell-phone cover, Fig. 5 also illustrates the state after feeler lever 6 was upspring when mobile phone left feeler lever 6 places in the cell-phone cover, the utility model mobile phone burglar alarm should be attached on the cell-phone cover with the surface of the housing 7 at feeler lever 6 places when mounted, and on cell-phone cover corresponding to feeler lever 6 places perforate, make feeler lever 6 can stretch in the cell-phone cover, certainly, on cell-phone cover, also can offer groove, make the feeler lever 6 of touch switch 3 stretch into this groove on the cell-phone cover and projection in cell-phone cover corresponding to feeler lever 6 places.When if the user does not use its warning function, only need hand switch 2 is disconnected, like this, the circuit of alarm is in off-state, and no matter touch switch 3 disconnects or closure, and alarm is not all worked; When if the user need use its warning function, only need hand switch 2 closures, like this, the disconnection of the circuit of alarm or closure are just decided by touch switch 3, in the time of in mobile phone inserts cell-phone cover, mobile phone is depressed feeler lever 6 touch switch 3 is disconnected, thereby the circuit of alarm is in off-state, alarm is sounding not, when the burglar extracts mobile phone from cell-phone cover, during feeler lever 6 places in mobile phone leaves cell-phone cover then feeler lever 6 upspring and make the touch switch 3 closed warning circuits of connecting, sound the alarm, the safety of timely call user's attention mobile phone is when user oneself needs extract mobile phone from cell-phone cover, thereby can at first hand switch 2 be disconnected the circuit of breaking alarm, alarm is not all worked when plugging mobile phone like this.Apparently, from the above as can be known, when the utility model mobile phone burglar alarm is installed on the cell-phone cover, preferably be installed in the back side of cell-phone cover, like this, when the user was inserted in cell-phone cover between waist, the operating side of hand switch 2 was crushed between the cell-phone cover back side and the health, and the burglar can't disconnect hand switch 2 to cut off warning circuit.In addition, at some in particular cases, when slipping away cell-phone cover voluntarily as if mobile phone, based on above-mentioned operation principle, alarm also can in time sound the alarm, with the safety of call user's attention mobile phone.

The utility model mobile phone burglar alarm can be by housing 7 encapsulation as a product independently; also can utilize the housing 7 of the part of cell-phone cover or cell-phone cover as alarm; make alarm and cell-phone cover be combined into a cell-phone cover product that independently has alarm, a this part with cell-phone cover or cell-phone cover also belongs within the protection range of the present utility model as the form of housing 7.

This alarm can also be applied to other occasion, for example can be contained in suitcase, briefcase, door etc. and locate, and its mounting means and operation principle are all similar with the above-mentioned situation that is applied to mobile phone.

Claims (3)

1, a kind of mobile phone burglar alarm, it is characterized in that: it is by the battery (1) that is installed in the housing (7), hand switch (2), touch switch (3), sound source chip (4), loudspeaker (5) and connection line are formed, battery (1), hand switch (2), touch switch (3), sound source chip (4) is series connection mutually, loudspeaker (5) are connected on the output stage of sound source chip (4), touch switch (3) is a normally closed spring-return switch, touch switch (3) is provided with feeler lever (6), feeler lever (6) stretches out outside the housing (7), the operating side of hand switch (2) also is positioned at outside the housing (7), and on the different surfaces of the difference seat housing of the feeler lever (6) on the operating side of hand switch (2) and the touch switch (3) (7).

2, mobile phone burglar alarm according to claim 1 is characterized in that: described housing (7) is independently package parts.

3, mobile phone burglar alarm according to claim 1 is characterized in that: described housing (7) is the part of cell-phone cover.

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