JPS6212873B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timer watch. Conventionally, for example, a 60-minute timer has been added to a mechanical pointer display clock, but this simply adds a spring-type timer to the clock, resulting in a complicated structure. Furthermore, the timing accuracy was poor and reliability was lacking. SUMMARY OF THE INVENTION Therefore, the present invention provides a highly accurate timer watch that requires only an extremely simple configuration to be added to a pointer display watch. An embodiment of the present invention will be described below based on the drawings. In FIG. 1, a timer set button 2 is provided at the top of a clock frame 1, and a knob 3 for changing the timer time setting range is provided at the lower right of the front surface. In this example, three hours are used: 1 hour, 2 hours, and 6 hours.
Can be used as any kind of timer. 4 and 5 are hour and minute hands that display the current time, and 6 is a timer time setting hand. Figures 2 and 3 show the timer time setting mechanism.
The clock mechanism is the same as that of a general crystal clock, and description and illustration thereof will be omitted. Reference numeral 7 denotes a timer set wheel, on which a heart cam 8 is integrally molded and a set needle shaft 9 is fixedly attached, to the tip of which a timer set needle 6 is attached. A hole 8a is bored in the heart cam 8, into which a pin 11 protruding from a receiving plate 10 is inserted to rotatably support the timer set wheel 7. Reference numeral 12 denotes a second hand wheel, which is rotated by the rotation of a motor (not shown). Reference numeral 14 denotes an operating arm fixed to the set button 2, and a spring 16, one end of which is fixed to the adjustment plate 15, is fixed to the projection 14a of the operating arm. The actuating arm 14 is pulled upward in FIG. 2 by the spring 16, and the heart cam 8 is regulated by the bent end portion 14b of the actuating arm 14. Further, a transmission gear 17 is rotatably fixed to the protrusion 14c of the operating arm 14. Reference numeral 18 denotes a switch, which is closed by a protrusion 14a of the operating arm 14. FIG. 4 mainly shows the configuration of the timer circuit, and A ₁ to _{A 4} are differentiating circuits, and a 1-second signal is supplied to the input terminal a of the differentiating circuit A ₁ . _C1 is a counter for changing the set range of timer time, and its output terminals _P1 to _P3 generate pulses with periods of 1 minute, 2 minutes, and 6 minutes, respectively. _C2 is an up-down counter, B is a detection circuit that produces an output only when the content of counter _C2 is 0, _F1 and _F2 are flip-flop circuits, and _G1 to _G3 are gate circuits.
V ₁ is an inverter, SP is a sounding device, R is a resistor, S
is a switch operated by the range switching knob 3 shown in FIG. Next, the operation will be explained. In normal times, since the set button 2 is pushed upward, the heart cam 8 is regulated and the timer set hand 6 points to the 12 o'clock index position as shown in the first diagram. Furthermore, since the transmission gear 17 does not mesh with the second hand wheel 12 and the timer set wheel 7, the rotation of the second hand wheel 12 is caused by the timer set wheel 7.
is not transmitted. Furthermore, switch 18 is open, gate circuit _G1 of FIG. 4 is closed, and passage of the differential pulse of the 1 second signal is blocked. It is also assumed that the flip-flop circuit _F2 has been reset, and the counter _C1 is held in the reset state by its output. Therefore, the timer time is set,
First, select the set range using knob 3 in FIG. For example, when the timer is used as a two-hour timer, the terminal _P2 of the counter _C1 is selected by the switch S in FIG. 4 by setting it to 2H as shown in FIG. When the set button 2 is pressed down until it is stopped by the dial plate 15, the switch 18 closes, the heart cam 8 is released, and the transmission gear 17 moves to the second hand 1.
2 and timer set wheel 7. Therefore, the rotation of the second hand wheel 12 is transmitted to the timer set wheel 7 via the transmission gear 17, which rotates and moves the set hand 6 by one second. On the other hand, by closing switch 18, a differential pulse is generated from differential circuit _A2 of FIG. 4, and flip-flop circuit _F1 and counter _C2 are reset. By resetting the counter _C2 , its contents become 0, but by resetting the flip-flop circuit _F1 , the output from the detection circuit B is blocked. By the above-mentioned closing of switch 18, counter C ₂
goes into up mode and gate circuit _G1 opens. Therefore, a differential pulse with a period of 1 second is supplied to the counter _C2 to perform up-counting. This differential pulse is synchronized with the movement of the timer set hand 6, and the indicated position of the timer set hand corresponds to the contents of the counter _C2 . Further, the pulse from the gate circuit _G1 passes through the gate circuit _G3 , and a confirmation sound is generated from the sound generating device SP. Since it is used as a 2-hour timer, the interval between the hourly indicators from 1 to 12 o'clock corresponds to 10 minutes. Therefore, if it is desired to set 40 minutes, for example, the press of the set button 2 is released when the timer set hand 6 points to the 4 o'clock mark, that is, when the counter _C2 counts 20. Then, the actuating arm 14 is pulled upward in FIG. 2 by the spring 16 and returns to its initial state. That is, the transmission gear 17 is disengaged and the heart cam 8
is regulated, the timer set hand 6 returns to the 12 o'clock index position, and the switch 18 is further opened. switch
18 switches the counter _C2 to the down mode and closes the gate circuit _G1 . Further, the output of the inverter _V1 becomes "1" and the flip-flop circuit _F1 is triggered, and the output Q of the flip-flop circuit F1 makes the detection circuit B ready for operation. Furthermore, a differential pulse is generated from the differential circuit _A4 , the flip-flop circuit _F2 is set, and the reset of the counter _C1 is released. Therefore, counter _C1 counts differential pulses with a period of 1 second, and a pulse with a period of 2 minutes is generated from its terminal _P2 ,
This causes the counter _C2 to count down. Then, when 40 minutes have elapsed, that is, when 20 pulses of the above 2 minute period have been supplied, the counter
The content of _C2 becomes 0 and an output is generated from detection circuit B. This output generates a pulse of a predetermined width from the differentiating circuit _A3 , which is supplied to the sound generating device SP via the gate circuit _G3 , thereby generating a notification sound. On the other hand, the flip-flop circuit _F2 is reset by the pulse from the differentiating circuit _A3 , and the counter _C1 is held in the reset state, returning to the initial state. By the way, by switching the knob 3 in FIG. 1 to 1H, the terminal _P1 of the counter _C1 is selected by the switch S in FIG. Therefore, a pulse with a period of one minute is selected as the down-counting pulse for the counter _C2 , and is used as a one-hour timer. That is, the timer time is set such that the interval between the hour markers is 5 minutes. When knob 3 is switched to 6H, the 6-minute cycle pulse from terminal _P3 is selected for down-counting and used as a 6-hour timer. That is, the interval between the hour indicators is 30
The timer time is set as minutes. Note that the set range of the timer time is not limited to the above, but can be arbitrarily set by selecting the period of the pulse for down-counting. Alternatively, the period of the down-count pulse may be kept constant, and the period of the up-count pulse for setting the timer time may be changed. For example, if a pulse with a period of 1 minute is used as the down-count pulse and the period of the pulse supplied to gate circuit _G1 is 1 second, it will become a 1-hour timer, and if it is 0.5 seconds, it will become a 2-hour timer. be. Further, in the above embodiment, the set button is kept pressed to set the timer time, but a mechanism for holding the set button in the pressed state may be provided. This mechanism may be a known mechanism in which, for example, a pin is set up on the operating arm 14 and its tip is fitted into a heart cam groove. Further, in the above example, the timer is started at the same time as the timer time is set, but the timer is not limited to this, and may be started by operating the start switch after the timer time is set. As described above, according to the present invention, the timer set wheel is rotated in conjunction with the second hand wheel by operating the set operation member, the timer set hand is moved, and the timer time is set by counting the hand movement time. Since the output is generated after ,
It only requires the addition of an extremely simple mechanical configuration, and since the timer set time is displayed in the same way as the second hand display, it does not require additional space and is particularly effective when used in small watches. be. Furthermore, since the timer time is counted by a circuit, the time accuracy is improved and the set range can be easily changed, making it highly versatile.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is a front view showing the main parts extracted, Fig. 3 is a right side view of Fig. 2, and Fig. 4 is a circuit configuration. FIG. 2 is a logic circuit diagram showing an example. 2...Set operating member, 6...Timer set needle, 7...Timer set wheel, 8...Heart cam,
12...Second hand wheel, 14...Operating arm, 14b...Bending portion, 16...Spring, 17...Transmission gear, 18 ...
...Switch, _C1 ...Counter, _C2 ...Up-down counter, B ...Detection circuit, _F1 , _F2 ...Flip-flop circuit, _G1 to _G3 ...Gate circuit,
A ₁ to _{A 4} ... Differential circuit, V ₁ ... Inverter.

Claims (1)

[Scope of Claims] 1. A timer set hand that interlocks with the timer set wheel, a transmission device that transmits the rotation of the second hand wheel to the timer set wheel by operating the set operating member, and a transmission device that operates by operating the set operating member. A timer consisting of a switch, a counter that counts the operating time of this switch and sets the timer time, and an output circuit that receives the output of this counter and produces an output when the above timer time has elapsed since the generation of the timer start command. clock. 2. A timer set hand that interlocks with the timer set wheel, a transmission device that transmits the rotation of the second hand wheel to the timer set wheel by operating the set operating member, and a transmission device that controls the timer set wheel when the set operating member is not operated. A regulating device holds the hand at the 12 o'clock index position and releases the restriction by operating the set operating member, a switch operates by operating the set operating member, and counts the operating time of this switch. A timer watch comprising: a counter that sets a timer time; and an output circuit that receives the output of the counter and produces an output when the timer time elapses from generation of a timer start command.