JPH0442088A - World watch - Google Patents

Abstract

PURPOSE:To make betterment of communication between people moving in areas with time difference by correcting a sub-time indicator part in accordance with a main time indicator part with a slip mechanism and so constituting a place name indicator part as not to coincide with the main time indicator. CONSTITUTION:A drum wheel 15 consists of a pooly gear 15a, a daily rotation medium wheel 15b and a drum shaft 15c. The medium wheel and the drum shaft are fastened in clamping, and the gear 15a and the drum shaft are fixed with coil spring force formed together with the pulley gear 15a. Since the drum shaft 15c is connected with the coil spring, it forms a slip mechanism of every 30 degree rotation against the gear 15a. And a second wheel 13 consisting of 2 to 13a is fastened in clamping by a spring formed together with the second gear 13b, and has a slip mechanism fixed at an arbitrary point. The medium wheel 15b is connected with a third time correction wheel 23, the second time correction wheel 22 and the first time correction wheel 21. In the second step, a drum 25 is moved to the left by the latch and connects to the gear 21. By winding a stem at this state, an hour hand 1 and a sub-hour hand 4 are corrected stepwise for 30 and 15 deg., respectively by the slip mechanism of the drum wheel 15.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a world in which it is possible to easily know the time in other regions and to easily set the clock to the time in a desired region without stopping the clock. Regarding watches.

[Prior Art] Conventionally, there have been watches with time difference adjustment as described in Japanese Patent Application Laid-open No. 59-160791, and Japanese Patent Application Laid-Open No. 62-251690.
As described in the publication, there is a known watch in which the sub-hour hand can adjust the time difference, the main hour hand is adjusted by stopping the watch, and the sub-hour hand is not adjusted at that time.

[Problems to be solved by inventions] Opportunities to travel overseas have increased recently, and many people travel abroad for work. Additionally, there are countries like the United States that have time differences within the country, and there is an increasing demand for watches with time difference correction, which allows people to easily adjust the time difference without having to stop the clock. On the other hand, there are many opportunities to work with people overseas, and there is a high demand for watches that can easily tell the other person's time.

The former structure of the prior art has the problem that it is necessary to know the time to set, and if the hour hand is corrected, the original time cannot be determined. When I travel overseas with this watch, I adjust the time difference to set the time to the destination, but when I contact my home country by phone, I don't know the time in my home country, which is inconvenient. Also, when you want to contact someone overseas for work, you cannot read the other person's time from this clock.

The latter structure of the prior art has the problem that when it is desired to adjust the hour hand located at the center of the watch, the watch must be stopped and the minute hand must be set at the same time. With this watch, if you want to contact people in different time zones for work, you can set the sub-hour hand to the other person's time and instantly know the other person's time, but if you want to contact people in multiple areas You can't use it to set the sub-hour hand, and you have to know the other person's time to set the sub-hour hand. In addition, if the person travels between areas with time differences due to travel or work, either adjust the time difference on the sub-hour hand and use the sub-hour hand to read the time in your location, or stop the watch and move the hour and minute hands to the location where you are. must match. When using a watch, it is difficult to read the time using the small 24-hour sub-hour hand. Also, when you stop the clock and set the hour and minute hands, you have to set the minute accurately, which is quite troublesome. Moreover, with a highly accurate watch like a quartz watch, you want to set the second hand as well.
With this watch, you have to stop the watch once, which means that the second hand, which has been set to the correct position, will become misaligned.

The present invention solves these problems, and its purpose is to provide a world clock that is easy to use for people who travel between different time zones and for people who communicate with people in different time zones. It is.

[Means for Solving the Problems] The world clock of the present invention has a main time display member that rotates once every 12 hours, a sub-time display member that rotates once every 24 hours, and a place name that rotates once every 24 hours and has a place name stamped on it. a display member, a drive unit for driving a clock, a transmission train for transmitting the movement of the drive unit to the main time display member, a slip in the transmission wheel train for correcting the main time display member without stopping the drive unit. In the world clock having a mechanism, the auxiliary time display member is lightly pressed by the slip mechanism in conjunction with the main time display member, and the place name display member is not operated in conjunction with the main time display member. .

[Example] Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a plan view of a timepiece showing one embodiment of the present invention. 1 is the hour hand of the 12-hour system, 2 is the minute hand, 3 is the second hand, 4 is the sub-hour hand of the 24R time system, 5 is the place name plate that rotates once every 24 hours, and 6 is the sub-hour hand 4 that rotates forward at 24 o'clock. The day display moves forward one day when it passes, and goes back one day when it passes in reverse, and is linked by a gear train connection. 7 is Tsuyuusu and the first row is 7a.
, a second stage 7b and a third stage 7c. Further, 8 is a dial.

Next, I will explain how to read this watch. It can be seen that this watch shows the time 10:08:42 like a normal watch with the hour hand 1, minute hand 2, and second hand 3. Also, the sub hour hand 4
is 1 o'clock in the 24-hour system, and it also shows the location of TYO on place name plate 5, which indicates Tokyo.
It turns out that the time is 8 minutes and 42 seconds. The letters indicating the city name on the place name board 5 are printed at a 15° angle for each hourly time difference, so if you read the position of the place name in a 24-hour system, you can tell the time in that city. For example, in London, it is easy to see that the LON position is in the 1 o'clock range, and the time is 1:08:42 in the morning. In this way, this watch uses the sub-hour hand 4 to display the morning and afternoon times for the area indicated by the hour hand 1, and allows the user to instantly read the time in various parts of the world in a 24-hour system using the place name plate 5.

Next, I will explain how to use this watch when traveling overseas. By rotating this watch with Yuzu 7 in the second stage 7b, the hour hand 1 is set at 300° and the sub-hour hand 4 is set at 15°.
You can make corrections in the same direction at the same time using steps. For example, if a person from Tokyo comes to London, the sub-hour hand 4 is set to L□N. The hour hand 1 now indicates the 1 o'clock range, and you can adjust the time difference without having to consider the time difference. At this time, the time in London is behind that in Tokyo, so by reversing the clock, the date display 6 can be displayed correctly. The hour hand 1 now indicates the 1 o'clock range, and you can adjust the time difference without having to think about it. At this time, the TYO on the place name plate 5 indicates 10:00 a.m., which shows that it is 10:08:42 a.m. in Tokyo, and similarly shows the time in various parts of the world.

Next, I will explain how to set this watch. Set the starting point 7 to the third row 7c, and while looking at the city name on the place name plate 5 and the minute hand 2, rotate the starting point 7 to match the poem. For example, if it is 9:00 a.m. in Tokyo, T on place name plate 5
Set the minute hand 2 to 0 minutes at 9:00 am. Then, move the crown 7 to the second click 7b and align the sub-hour hand 4 with the name of the place you want to match. Further, the date display 6 can be adjusted by rotating the sub-hour hand 4.

2, 3, and 4 are cross-sectional views of FIG. 1. The main plate 10 is the base of the watch body. Although not shown in the figure, this timepiece is driven by a stepping motor, which is decelerated by gears and drives the fourth wheel 11 to which the second hand 3 is fixed, so that it rotates once every minute. The rotation of the fourth wheel 11 is transmitted to the hour wheel 15 via the third wheel 12, second wheel 13, and minute wheel 14.

Here, the number of teeth is set so that the second wheel 13 makes one revolution in one hour, and the hour wheel 15 makes one revolution in 12 hours. Further, the sun wheel 14 meshes with the small iron wheel 28. The hour wheel 15 includes a barrel gear 15a, a date intermediate wheel 15b, and a part 15c. The date intermediate wheel 15b and the part 15C are fixed by interference coupling, and the cylindrical gear 15a and the part 15c are connected to the cylindrical gear 15a.
It is fixed by the spring force of the spring formed by the body. The part 15C has 12 teeth and engages with the spring, so the part 15C is at an angle of 30° with respect to the cylindrical gear 15a.
It forms a slip mechanism that rotates in steps. In addition, the second wheel 13 is composed of a second pinion 13a and a second gear 13b, and is fixed to the second gear 13b with a tightening margin by a spring formed in one piece, and has a slip mechanism that can be fixed at any position. ing. The hour wheel 15 rotates from the annular gear 15a through the place name wheel 16 to the place name type 17 to which the place name plate 5 is fixed, and from the date intermediate wheel 15b through the auxiliary hour wheel 18 the auxiliary hour hand 4 is fixed. It is transmitted to the sub-time dial 19 and the date wheel 20. Here, place name type 17, sub-hour type 19 and date wheel 2
0 has the number of teeth set so that it makes one revolution in 24 hours. The date wheel 20 engages once a day with a date wheel 29 having 31 teeth on which the day indicator 6 is printed, and advances the date indicator 6 by one day by moving it one tooth. Also, the intermediate car 15b is the third
It is gear-coupled with the hour adjustment wheel 23, the second Ill adjustment wheel 22, and the first hour adjustment wheel 21. The winding stem 24 has a screw 7 shown in FIG. The catch wheel 25 is movable in the axial direction with the winding stem 24, but has a square shaft and hole relationship so that they rotate together, and is positioned by a bolt 27. Second
The figure shows a state in which the crown 7 of FIG. 1 is in the first stage 7a, and even if the crown 7 is rotated at this point, it will not rotate freely.

When in the second stage 7b, the lock wheel 25 moves to the left by the bolt 27 and engages with the first hour correction wheel 21.

By rotating the crown 7 in this state, the hour hand 1 can be adjusted to 300 degrees and the sub-hour hand 4 can be adjusted in both forward and reverse directions in 15° steps by the slip mechanism of the hour wheel 15. Since the slip torque of the hour wheel 15 is set to be smaller than the drive torque of the motor, the time difference can be corrected while the clock is running. At this time, if the date wheel 20 engages with the date wheel 29, the date display 6 advances if the sub-time dial 19 is in the forward direction, and returns the date display 6 if it is in the reverse direction.

In the poem of the third stage 7c, the pin wheel 25 moves to the right due to the bolt 27 and engages with the small iron wheel 28. At this time, although not shown in the figure, the regulating lever comes into contact with the circuit section to stop driving the motor, and at the same time comes into contact with the gear that transmits the rotation of the motor to the fourth wheel to regulate the rotation of the fourth wheel. If you turn crown 7 in this state, the second wheel's slip mechanism will cause minute hand 2 and hour hand 1.
, the sub-hour hand 4 and the place name plate 5 can be adjusted at the same time.

Although the explanation has been given above using a watch that uses a stepping motor, the same effect can be achieved with a mechanical watch. Further, although the IR step time difference correction mechanism has been described, the present invention is not limited to this, and any mechanism that can slip without stopping the drive unit may be used.

[Effects of the Invention] As explained above, according to the present invention, it is possible to instantly read the time in various parts of the world without any operation.
When adjusting the time difference, you can easily set the clock to the RF time of the target area without stopping even if you do not know the time difference, and you can read the time using the hour and minute hands at the center, and those who want to contact people overseas. This makes it a very easy-to-use watch for people who travel overseas.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the present invention. 2, 3, and 4 are cross-sectional views of FIG. 1. １・・・・・・・・・・・・・・・Hour hand 2・・・・・・
・・・・・・・・・・・・Minute hand 4・・・・・・・・・・・・
・・・・・・Sub-hour hand 5・・・・・・・・・・・・・・・・・・
Place name plate 7・・・・・・・・・・・・・・・Ryuzu 1
5・・・・・・・・・・・・・Hindle wheel 17・・・・・・
・・・・・・・・・Place name car 9・・・・・・・・・・・・・・・
・Vice-time table applicant Seiko Epson Corporation

Claims (1)

[Claims] A main time display member that rotates once every 12 hours, a sub-time display member that rotates once every 24 hours, a place name display member that rotates once every 24 hours and has a place name marked on it, a drive unit that drives the clock, and a drive unit that controls the movement of the drive unit. In a world clock having a transmission wheel train that transmits information to the main time display member, and a slip mechanism in the transmission wheel train that corrects the main time display member without stopping the drive section, the slip mechanism allows the sub time display member to be adjusted. A world clock characterized in that the display member is corrected in conjunction with the main time display member, and the place name display member is not coordinated with the main time display member.