JPH0330889U - - Google Patents

Description

[Brief explanation of drawings]

The drawings show an embodiment of this invention; Fig. 1 is an external perspective view of a time recorder equipped with this invention, Fig. 2 is a block diagram of the structure of this invention, and Figs. 3 and 4 show a pointer advancing device and FIG. 5 is a flow chart showing the configuration of the reference position detection sensor. FIG. 5 is a flowchart of the operation of aligning the long and hour hands to the reference time display position. FIG. 6 is a flowchart of the operation of aligning the long and hour hands to the current time. 1... Pointer advancement device, 1a... Gear, 1b...
Long hand progressive gear, 1b ₁ ... Small gear, 1b ₂ ... Rotating shaft, 1c ... Reduction gear, 1c ₁ ... Large gear, 1
c ₂ ... Small gear, 1d... Hour hand progressive gear, 1d ₁
...Cylinder shaft, 2...Analog clock, 2a...Long hand,
2b...Hour hand, 2d...Reference time display position, 3
... Microcomputer, 4 ... Reference position detection sensor, 4a, 4b ... Transparent hole, 4c ... Light emitting element, 4d ... Light receiving element, 4e ... Insulating substrate, 5
...Clock oscillator, 6...Setting push button switch, 7...Time card feed control device, 8...
Printing device, 9...Display device, 10...Time card insertion slot, M...Pulse motor.

Claims (1)

[Claims for Utility Model Registration] A pointer advancing device having a pulse motor as a drive source for rotating and advancing the long hand and the short hand of a watch, a microcomputer that controls the pulse motor, a long hand and a short hand. The hand advancing device is composed of a reference position detection sensor that sends a reference position signal to a microcomputer when the hour hand advances to the reference time display position on the dial, and a push button switch for setting the current time. , a pulse motor, a gear attached to its rotating shaft, a long hand step gear meshed with this gear, and a short hand step gear disposed coaxially and facing each other so as to be interlocked with the long hand step gear via a reduction gear. The reference position detection sensor is formed by a gear, and the reference position detection sensor includes a transparent hole drilled on the same circumference of the long hand advancement gear and the short hand advancement gear, and a position where the long hand and the short hand indicate the reference time on the dial. The microcomputer is formed by a light-emitting element and a light-receiving element that are arranged opposite each other so that a reference position signal is generated when the respective light-transmitting holes face each other so that a light beam can pass therethrough. To adjust the long and short hands to the reference time display position when the time is the same as the reference time, set the long and short hands to the reference time display position when the long and short hands have advanced and the current time is the same as the reference time. When the hour hand does not match the reference time display position and does not emit a reference position signal, the long hand and hour hand are advanced at high speed via the pulse motor, and when the hour hand and hour hand match the reference time display position, A microcomputer reads the first reference position signal emitted from the reference position detection sensor, calculates the number of rotation steps of the pulse motor to advance the long hand and short hand to the display position of the second reference time, and moves the short hand to the second reference time display position. Move the long hand to the reference time display position at high speed until a few minutes before the second reference time display position, then slowly advance the long hand to align the long and short hands with the reference time display position. After reading the second reference position signal, the long hand and short hand advance normally according to the passage of time, and when setting the long hand and short hand to the current time, press the current time setting push button switch. By pushing, the long hand and short hand are advanced at high speed via the pulse motor, the microcomputer reads the first reference position signal, and the pulse motor is activated to advance the long hand and short hand to the reference time display position. Calculate the number of rotational steps, move the hour hand to the second reference time display position, advance the long hand at high speed to a few minutes before the second reference time display position, and then move the long hand at low speed to the second reference time display position. The microcomputer reads the second reference position signal by aligning the hour hand with the reference time display position, calculates the number of rotation steps of the pulse motor to advance the long and hour hands to the current time display position, and moves the hour hand to the current time display position. Move the long hand to the time display position at high speed until a few minutes before the current time display position, then slowly advance the long hand to the current time display position to align the long and short hands with the current time display position. After that,
A control device for an analog clock of a time recorder, characterized in that the pulse motor is controlled so that the long hand and the short hand perform normal time increments according to the passage of time.