CN201198674Y

CN201198674Y - Prompter for fetching key

Info

Publication number: CN201198674Y
Application number: CNU2008201160099U
Authority: CN
Inventors: 王怀宝; 华旭奋; 杨小平; 曹冬美
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2008-05-16
Filing date: 2008-05-16
Publication date: 2009-02-25
Anticipated expiration: 2018-05-16

Abstract

The utility model discloses a key taking reminding device and consists of a metal key head, a touch electrode sheet, an integrated printed circuit, a speaker and a key handle. The touch electrode sheet is arranged in the tail groove of the metal key head; the integrated printed circuit and the speaker are respectively positioned at two sides in the key handle; the touch electrode sheet, the speaker and the integrated printed circuit are connected, and the integrated printed circuit consists of a time delay base integrated circuit and an alarm integrated circuit; when the key is not promptly taken out after the lock is unlocked, the speaker issues alarming sound, so as to achieve the purpose of reminding people to promptly take out the key, and the utility model has the beneficial characteristics of simple structure, good reminding effect, improvement for living security, and the like.

Description

A kind of key reminiscences of getting

Technical field

The utility model relates to a kind of reminiscences, especially relates to the reminiscences that a kind of reminds people is in time taken off key.

Background technology

Modern society's rhythm is fast, people live busy, anyone might forget key in door lock, especially housewife or the elderly forget situation about pulling key after often opening the door, cause potential safety hazard easily, provide crime opportunity of burglary to the offender, increase social unstability even serious harm people life, property safety.

The utility model content

The utility model provides a kind of key reminiscences of getting at the deficiencies in the prior art.

For realizing the above object, the technical solution adopted in the utility model is:

A kind of key reminiscences of getting is made up of metal key head, touch electrode sheet, integrated printed-circuit, loudspeaker, the shank of the key; Wherein metal key is equipped with the touch electrode sheet in portion's groove end to end, the inner both sides of the shank of the key are separately installed with integrated printed-circuit and loudspeaker, touch electrode sheet, loudspeaker are connected with integrated printed-circuit, after the metal key head inserts lockhole, activate integrated printed-circuit when the lock pearl in the lockhole contacts with the touch electrode sheet and carry out work, reach in setting-up time, do not extract key then loudspeaker in time send the effect of chimes of doom, thereby in time key is taken off after reminding the user to unblank.

The utility model is by installing the touch electrode sheet at key bit, integrated printed-circuit and loudspeaker are installed in the shank of the key both sides, integrated printed-circuit is by prolonging time-base integrated circuit and the warning integrated circuit is formed, have time delays and warning function, after opening the door, owner generally can finish the action of opening the door in second at 10-15, this moment, reminiscences can not reported to the police, if owner forgets that the time of pulling key was above 15 seconds, warning circuit closure in the integrated printed-circuit, loudspeaker is started working, send alarm sound, remind the user in time key to be taken off, this design has simple in structure, remind effective, long service life, increase beneficial features such as inhabitation safety.

Description of drawings

Fig. 1 gets key reminiscences master TV structure figure for the utility model;

Fig. 2 gets key reminiscences backsight structure chart for the utility model;

Fig. 3 gets key reminiscences frame principle figure for the utility model;

Fig. 4 is the circuit theory diagrams of the utility model integrated printed-circuit.

The specific embodiment:

As shown in Figure 1 and Figure 2, getting the key reminiscences is made up of metal key 1, touch electrode sheet 2, integrated printed-circuit 3, loudspeaker 4, the shank of the key 5; Wherein metal key 1 is connected with the shank of the key 5, and touch electrode sheet 2 places the tail end groove of metal key 1, and touch electrode sheet 2 is connected with integrated printed-circuit 3 with loudspeaker 4, and integrated printed-circuit 3 is installed on the shank of the key 5 inner both sides respectively with loudspeaker 4.

As shown in Figure 3, after key bit inserted lockhole, delay circuit received triggering signal and picks up counting when the lock pearl in the lockhole contacted with the touch electrode sheet, reach when in setting-up time, not extracting key, the warning circuit closure, loudspeaker is started working, and sends alarm sound.

As shown in Figure 4, integrated printed-circuit is mainly formed with the warning integrated circuit by prolonging time-base integrated circuit 555.During normal condition, time base circuit IC1 and R1, C1 form the monostable flipflop about transient state time T1=4min, IC1 is in stable state at ordinary times, and it is the pin output low level 3., and VT1 ends, the VT2 conducting, capacitor C 2 can not be charged by the VT2 short circuit, and the threshold value end of time base circuit IC2 6. pin is a high level, 3. the pin output low level, warning IC 3 dead electricity are not worked, and loudspeaker B is noiseless.

When the people unblanks, lock pearl in the lock housing and touch electrode sheet

Contact, the touch electrode sheet

Can send 2. pin of trigger end that a low level signal adds to IC1, make IC1 enter transient state, 3. pin output high level, triode VT1 conducting this moment, VT2 ends, and power supply can charge to IC2 by R4, along with the prolongation in charging interval, the 2. pin current potential of IC2 constantly descends, approximately through 15 seconds, the IC2 upset, it is pin output high level 3., makes IC3 get electric work and reports to the police, if the time of opening the door is in 15 seconds, then the 3. pin of IC2 is a low level, and circuit can not reported to the police; If uncaging time surpasses 15 seconds, will cause the 3. pin upset of IC2 to be high level, loudspeaker sounding alarm.The alarm sound duration, the transient state time T1 by IC1 determined, T1=1.1R1 * C1=4min, and behind the 4min, the 3. pin output low level of IC1, VT1 ends, the VT2 conducting, the 3. pin of IC2 is output low level also, the IC3 dead electricity, chimes of doom stops.

After the utility model inserts lockhole by the metal key head, lock pearl and touch in the lockhole Activate integrated printed-circuit during the electrode slice contact and carry out work, in setting-up time, do not extract key Then send the effect of chimes of doom, reach the choose purpose of key of timely prompting people, have structure Simply, remind the beneficial features such as effective, increase inhabitation security.

Claims

1. getting the key reminiscences is made up of metal key head, touch electrode sheet, integrated printed-circuit, loudspeaker, the shank of the key; It is characterized in that: described metal key is equipped with the touch electrode sheet in portion's groove end to end, and the inner both sides of the shank of the key are separately installed with integrated printed-circuit and loudspeaker, and integrated printed-circuit is by prolonging time-base integrated circuit and the warning integrated circuit is formed.

2. the key reminiscences of getting according to claim 1 is characterized in that: described touch electrode sheet activates integrated printed-circuit when contacting with the lock pearl and carries out work, and when not extracting key in setting-up time, loudspeaker sends chimes of doom.

3. the key reminiscences of getting according to claim 1 is characterized in that: described integrated printed-circuit has time delays and warning function by prolonging time-base integrated circuit and the warning integrated circuit is formed.