CN2047400U - Time alarm for point type clock - Google Patents

Abstract

The utility model discloses a time alarm for point type clock, which relates to the structure of the time alarming system of a timing clock. In the utility model, time alarming trigger signals are generated by a dry reed pipe and a permanent magnet arranged on an hour hand, and a sound circuit is controlled by an adapter circuit to alarm time. The time alarming device of the utility model is economically and reliably suitable for any point type timing clock.

Description

Time alarm for point type clock

System architecture when the utility model relates to pointer time clock noisy.

Clockwork driven mechanical clock has alarm clock and pendulum clock.Alarm clock is that the steel bell under spring action causes noisy with gear and other mechanical component since sound sharp-pointed and to wind up every day bring use inconvenient.Function when the existing music of pendulum clock is made a noise, it by the movement running part, cause make a noise running part and the electronics part of playing music and form, its essence is with mechanical component and control music integrated circuit.Seen two kinds of forms during crystal clock noisy: the one, when collecting newspapers, when making a noise etc. function realize in the large scale integrated circuit of one, its function admirable, right price is more expensive.Another kind is in quartz analog clock, utilize on the movement associated gear cam is set, stir the switch contacts of elastic sheet metal formation at fixed alarming time and control pronunciation circuit, increasing a pointer in addition gives and puts fixed alarming time, easy oxidation of this frame mode metal contact and fatigue, be still waiting improvement aspect serviceable life and the reliability, the locking time error is excessive simultaneously.

The purpose of this utility model is to propose a kind of apparatus structure when being applicable to pointer clock a kind of simple and good noisy.

Between movement and clock face plate in the casing, to lay one and give during with concentric rotating noisy of pointer and put dish, it is marked with time scale.Have the window of band arrow on the clock face plate so that the aligning time scale gives to be put the locking time, trigger pip is that tongue tube is in the break-make that adds dry-reed contact under the action of a magnetic field when making a noise.Tongue tube gives when being fixed on and making a noise and putting on the dish, and externally-applied magnetic field produces and be bonded in permanent magnet pieces on the hour hands and the corresponding position of tongue tube, and this comes down to a long-acting passive switch and when controlling pronunciation circuit and make a noise with it.Permanent magnet on the hour hands gives the tongue tube of putting on the dish when making a noise and makes dry-reed contact connect earlier then to disconnect this process and need about 10 minutes, this just causes and causes the long possibility of making a noise, therefore between dry-reed contact and pronunciation circuit, be necessary to be provided with a so-called adapter circuit, be converted to broad-adjustable electric pulse and pronunciation circuit is controlled so that can the switching signal that dry-reed contact is long.Adapter circuit has different simple structure forms because of selecting different pronunciation circuits for use.For example add the power supply etc. that a transistor switching circuit is controlled other pronunciation circuit, adjust the value of RC and determine to cause the time of making a noise with the input of RC delayed version control music door-bell integrated circuit or with the RC time-delay.Give for making that to put fixed alarming time easy, give putting processing driving cog on the dish when noisy, and be meshed with the cogged adjustment axle of an end pass-out casing other end, rotation is adjusted axle and tongue tube is given when noisy put dish to rotate can to give and put arbitrary moment when noisy.The function of device when making a noise for giving full play to, be installed in button on the door in dry-reed contact two end parallel connections one, make music circuit have the doorbell function, can also when making a noise, give putting on the dish and settle several tongue tubes, get the switching signal of dry-reed contact and implement certain regularly sequential control by the time sequencing of people's needs.

Described in the utility model when noisy device can be applicable to economic and reliable all pointer time clocks.

The structure principle chart of device when accompanying drawing is noisy.

Give putting during with concentric noisy of pointer tongue tube (2), scale (3), driving cog (4) are arranged on the dish (1), the gear end (6) that has of axle (5) is engaged with.One end of rotation axis (5) makes to give when making a noise puts dish (1) rotation, is given by scale (3) by the window (8) on the clock face plate (7) and puts fixed alarming time.Permanent magnet (9) is bonded in the suitable position of hour hands (10).Pronunciation circuit (12) is made up of integrated package KT9561 and loudspeaker.Adapter circuit (11) is by resistance (13), electric capacity (14) serial connection and pass through oppositely ground connection of diode (15).When fixed alarming time arrived, electric capacity (14) output positive potential was when pronunciation circuit makes a noise; Along with the charging of electric capacity (14), positive potential progressively decays to zero, stops when then making a noise, although dry-reed contact (16) is also at attracting state.Diode (15) provides the path of releasing for electric capacity (14).Adjusting R value is 22K, when electric capacity (14) is 470 μ F, and when noisy about 1 minute.Bell button (17) is installed in outdoors.

Claims (5)

1, device during pointer time clock noisy, the steel bell of mechanical clock causes noisy, crystal clock gives the correct time when making a noise with large scale integrated circuit or stirs elastic metal contacts circuit when triggering music and making a noise with cam, device is by tongue tube (2) when it is characterized in that pointer time clock noisy, permanent magnet on the hour hands (9), adapter circuit (11) and pronunciation circuit (12) are formed.

2,, give putting when it is characterized in that making a noise scale (3) and the driving cog (4) that gives the time of putting by the window (8) on the clock face plate (7) arranged on the dish (1) by described device when noisy of claim 1.

3,, it is characterized in that adapter circuit (11) can be the delay circuit that the diode (15) of resistance (13), electric capacity (14) and reverse link ground connection constitutes by described device when noisy of claim 1.

4, by described device when noisy of claim 1, the bell button (17) that it is characterized in that being contained in outdoors is in parallel with tongue tube (2).

5,, it is characterized in that when making a noise, to give and put dish (1) and go up and settle several to play the tongue tube of timing sequential control effect by described device when noisy of claim 1.