JPS60256221A - Timer - Google Patents

Abstract

PURPOSE:To increase the utilizing range of a timer by reversing automatically a dial after time-up and resetting a timer time to simplify the operation and provide a repetitive function to an analog timer. CONSTITUTION:When the dial 1 of the timer is turned off, a switch 22 is closed to set the timer. Then the switch 22 is turned off, an output of an oscillated frequency division circuit 7 and an output of a one-shot circuit 18 are processed by an FF17 and a drive control circuit 10, a motor 9 is driven forward and the pulse is counted by a counter 11. When the remaining time is zero, contacts 4, 5 of a contact piece 3 of a switch 23 contact and a single pulse is generated from one-shot circuits 19, 20. The pulse is processed by the FF17, a counter 12 and a comparator circuit 13, the operation of the circuit 10 is stopped and an alarm is raised from an alarm device 14. Moreover, the circuit 10 outputs a reverse command and a drive pulse for rapid traverse and the motor 9 is reversed at a high speed. Then the operation of an analog timer is simplified and the repetitive function is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an analog timer having a repeating timer function.

[Prior art and its problems]

Conventional analog timers with dials do not require complicated operations, so they have the advantage of being easy for anyone to use. However, since it does not have a repeat timer function, it is inconvenient when it is desired to repeatedly generate an alarm sound at regular intervals for cooking, sports, etc.

〔the purpose〕

Is the invention time-? To provide a timer capable of repeatedly generating an alarm sound by reversing a motor to the edge of a knob, reversing a dial, and setting the timer time again.

〔Example〕

In FIG. 1, 1 is a dial with a 60-minute timer scale on its outer periphery. Dial 1 rotation 1 axis 2
As shown in FIG. 2, a bifurcated sliding contact piece 3 is fixed to Kl-, and a common contact point 4 connected to V88 is formed on the rotation locus of its tip 3a.

Also, the reset contact 5 is placed on the rotation trajectory of the other tip 6b.
and form the alarm contact 6. When the dial 1 is at the OF'F position in Fig. 1, the tips 3α and 3b are in contact with 4.5, respectively, and when the remaining time is OK, the tips 5a and 3b are in contact with 4.5, respectively. It is arranged to touch contact point 4.6.

In Fig. 3, 7I'1 is an oscillation frequency dividing circuit, 8 is a drive circuit for motor E, and motor E is connected to t4 via a wheel train (V not shown).
The q-ear shown in Figure 1 is rotated once. This is a drive control circuit for the 10 motor 1, which controls the rotation direction and rotation speed of the motor 1.

11.12d counter, 13F'i comparison circuit, 141-
t alarm device, 15.16 is a gate circuit. 17
The one-shot circuit 19 outputs a pulse with a width of 10 seconds from the one-shot circuit 18.20 to itp IIA (
F) A pulse is generated. 21.22Ij analog switch. This is a switch consisting of a contact piece 3 and a contact point 4.5 shown in FIG. 2, and a switch consisting of a 23-piece contact piece 3 and a contact point 4.6.

Next, I will explain the operation. When the dial 1 is in the OFF position, the switch 9 shown in FIG. 3 is closed, and the oscillation frequency dividing circuit 7 is maintained in the reset state. Then, turn the dial 1 gold clockwise to set the timer time. For example, set it to 30 minutes. The kneading opens the switch and releases the reset of the oscillation frequency divider circuit 7. At the same time, one pulse is generated from the one-shot circuit 18, and the counter 11 and the flip-flop knob circuit 17 are reset. The output of the flip-flop circuit 17 causes a forward rotation instruction output and a drive pulse to be generated from the drive control circuit 10, and the output of the motor drive circuit 8 drives the motor 1, rotates the dial 1 counterclockwise, and starts the timer. do.

On the other hand, the analog switch 21 is turned on by the output l of the flip-flop circuit 17, and drive pulses from the drive control circuit 10 are supplied to the counter 11 and counted.

When the remaining time reaches 0 and the dial 1 reaches the 0 position, the tips 3a and 5b of the contact pieces 5 in FIG.
．． Contact 6. Therefore, the switch trowel in Figure 6 closes,
One pulse is generated from the one-shot time 1I1120, and the counter 12 is reset. On the other hand, in response to the output of the gate circuit 15, a pulse with a width of 10 seconds is generated from the one-shot circuit 19, the flip-flop circuit 17 is set, and the alarm device 14 generates an alarm sound for 10 seconds. At this time, the drive control circuit 10 is held in an inoperative state by the pulse of the one-shot circuit 19, and the motor 9
is not driven. When the pulse from the one-shot throat circuit 19 stops, the drive control circuit 10 operates, but since the flip-flop circuit 17 is set at this time, the drive control circuit 10 generates a reverse rotation instruction output and a fast forward drive pulse. The kneading causes the motor 1 to rotate in reverse at high speed, and the dial 1 rotates clockwise. The drive pulse is supplied to the counter 12 via the analog switch 22. When the contents of the counter 12 match the contents of the counter 11, that is, when the timer time is set to 50 minutes by the dial 1, an output is generated from the comparator circuit 13 and the fringe block circuit 17 is reset. Therefore, the timer starts again as a 30 minute timer.

It functions as a repeat timer by the following operations 5- Ru.

If you want to stop the timer operation, turn dial 1 OFF.
This is to return it to its position.

Note that in the above embodiment, the timer time was repeatedly set by the force Q counters 11 and 12 and the comparator circuit 13;
However, the present invention is not limited to this. For example, an up-down counter may be used to switch up and down depending on the direction of rotation of the motor, and the motor drive pulse may be used as a tarokk pulse, so that when the content reaches 0, the timer time can be set. good.

〔effect〕

According to the present invention, the dial is automatically reversed and the timer time is reset after the time has expired, so an easy-to-operate analog timer can be provided with a repeat function, making it possible to repeatedly practice cooking, sports, etc. It is convenient for such things. What's more, you can check the remaining time and check the operation using the dial.

6-

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view showing the timer contacts and contacts shown in FIG. 1, and FIG. 5 is an example of the circuit configuration. It is a logic circuit diagram. 1...Dial 3...Contact piece 4.5...Contact 10...Drive control circuit 11.12...Counter 13... ... Comparison circuit 14 ... Alarm device 17 ... Flimp tube A-tube circuit and above Applicant Seikosha Co., Ltd. = 7- Fig. 1 Fig. 2

Claims (1)

[Claims] a switch that operates when the time runs out, an alarm device that generates an alarm sound by the operation of this switch, and a control that reverses the motor and resets the dial after the alarm sound is generated. A timer consisting of a circuit.