JPH0820527B2 - Watch with age and simple tide indicator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a timepiece having a function of displaying an indication of tides in addition to the position and age of the moon.

[Conventional technology]

Tide ebb and flow are the positional relationship between the earth and the moon and the sun, topography,
Each cycle has its own merits and demerits because of complicated factors such as latitude, and it is impossible to always display the exact tides using the average tidal cycle, but the sun, earth, and moon are almost in a line. In the spring tide, when the tides increase side by side, the difference from the average tidal cycle is relatively small, and even during the spring tide or the new moon or full moon around the spring equinox with a small declination difference between the sun and the moon. The tidal time interval of tide is almost constant, and if you know the age of the moon, you can also see the guideline of the difference in tides. Therefore, to know the approximate guideline of tide in practice, use the average tidal cycle with the moon display. The simplified tidal display method has a high practical value. Generally, tidal tides occur twice each during low tide and high tide during one lunar day, that is, the average movement cycle of the moon seen from the ground, so the average tidal cycle corresponds to 1/2 lunar day. In a conventional analog timepiece, for example, in Japanese Patent Application No. 60-175932, in a timepiece provided with an age display section that simultaneously displays the average position of the moon and the age of the moon, the rotation cycle of the moon plate that indicates the position of the moon is By using 1 lunar day, there is a register ring in which two indicator marks indicating low tide and high tide are alternately arranged at 90 ° intervals around the moon display, and Japanese Patent Application No. 60 There is only a simple tidal display function that does not have a moon age display function, using a tidal plate that has a tidal figure that makes one revolution with an average tidal cycle (1/2 lunar day) × n (n is a natural number), such as −256425. is there.

[Problems to be solved by the invention]

However, the one using the above register ring is
It is necessary to move the rotation direction of the moon plate, which has a rotation center at an eccentric position with respect to the center of the register ring, onto the register ring and read it, and the tidal state cannot be displayed as a change in the figure. There is a possibility that the register ring will go crazy due to a large external force. On the other hand, the tidal plate display that does not have the moon age indicator has the inconvenience that it cannot be used for astronomical observation because it is impossible to distinguish between the spring tide and the spring tide, which is a measure of the difference in tides, and the moon age is unknown. It was An object of the present invention is to provide a timepiece with a moon age / simplified tide display, which has a moon age display function and has a wide range of applications and is easy to visually recognize.

[Means for solving problems]

The present invention has been made to solve the above problems, and a time display unit that displays the time by a pointer driven by a train wheel mechanism of the timepiece, a moon display unit that displays the moon age, and a tide that displays the tide. In a timepiece having a display unit, a rotation center of the hands is provided at a substantially central portion of the time display unit, the moon age display unit is arranged on one side of the rotation center, and the tidal display unit is arranged on the other side. The moon age display section has a moon background section for displaying the color of the moon and a round hole driven by the train wheel mechanism for displaying a part of the moon background section as the moon. It is composed of a moon plate and a shadow plate for forming the phases of the moon, and the tidal display part is for displaying a tidal background part for displaying the ebb and flow of the tide and a part of the tidal background part. It has a window and is driven by the train wheel mechanism. It is composed of a tidal plate that rotates once in an average tidal cycle (1/2 lunar day) x n (n is a natural number) in synchronization with The tide plate allows the user to easily understand the tidal state by changing the figure in addition to the guideline for the elapsed time from low tide or high tide by the tidal plate.

Example of Invention

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a timepiece with moon / simplified tide display according to the present invention, and FIG. 2 is a plan view of a dial of the timepiece of FIG.

In the figure, 1 is a clock with a moon / simplified tide indicator, 2 is a dial, 3 is an hour hand for displaying hours, 4 is a minute hand, 5 is a second hand, 6 is a moon plate, and the angle range with respect to the center of rotation is 60 °. Round hole
6a is provided, and 7 is a shadow plate, which is placed under the moon plate 6 so as to overlap therewith, and three shield portions of the same color as the moon plate 6 are provided at equal intervals so that they are exactly overlapped with the round holes 6a of the moon plate 6. Has been. Reference numeral 8 denotes a tide plate, which is provided with two fan-shaped tide display windows 8a having an angle range of 90 ° with respect to the center of rotation and two reading marks 8b for reading the tidal state alternately at 90 ° intervals. Has been.
The dial 2 has a 12-hour scale 21 at the position corresponding to the hour hand 3.
However, a moon background portion 22 for displaying the color of the moon is provided at a position corresponding to the locus of the round hole 6a of the moon plate 6, and is regarded as the horizon at the north latitude of 35 ° in the moon background portion 22. 22b above the convex boundary 22a uses a bright color so that the moon is clearly displayed and the shade of the color is clear with respect to the moon plate 6, and conversely 22c below the boundary 22a of the moon background 22. Uses an inconspicuous color that is the same as or close to the moon plate 6, and uses the rotation of the moon plate 6 and the difference in rotation between the moon plate 6 and the shadow plate 7 to determine the meridian line from the north pole to the south pole of the celestial sphere. The average position of the moon and the age of the moon when viewed right above are displayed, and the color of the moon displayed by the moon background portion 22 changes according to the display position, so the appearance of infestation is clearly indicated by color or shade of color. It can be distinguished. In addition, the boundary portion 22a of the moon background portion 22 continuously changes the color or the shade of the color because it does not mistakenly recognize the shape indicated as the age of the moon and because the actual time when the moon appears and disappears changes.

Further, the dial 2 is provided with a tide background portion 23 for displaying the tide at a color or a shade of color at a position corresponding to the trajectory of the tide display window 8a of the tide plate 8. Is two fan-shaped light-colored portions 23a for indicating a dry state in which the angle range with respect to the center of rotation of the tide plate 8 is 90 °, and 2 for indicating a full-colored state having the same shape as the light-colored portions 23a. The individual fan-shaped dark portions 23b are provided alternately, and the tidal background portion 23
On the outer periphery of the two tide indicator marks 23c corresponding to the reading mark 8b of the tide plate 8 and two high tide indicator marks 23d.
And are alternately provided at 90 ° intervals, and a guide mark 23e indicating a three-minute rise and a guide mark 23f indicating a three-minute drop are each 2
They are provided alternately at 90 ° intervals, and when the tide display window 8a of the tide plate 8 exactly overlaps the light colored part 23a of the tide background portion 23, the reading mark 8b of the tide plate 8 corresponds to the low tide reference mark 23c. It is configured so that the reading mark 8b of the tide plate 8 corresponds to the high tide reference mark 23d when the tide display window 8a is exactly overlapped with the dark portion 23b of the tide background portion 23. ing. The rotation directions of the moon plate 6 and the shadow plate 7 are clockwise according to the movement of the moon when viewed from the north pole to the south pole of the celestial sphere with the meridian directly above, and the rotation direction of the tide plate 8. Is also clockwise due to the train wheel structure described in detail below. That is, in the timepiece of the present embodiment, the rotation centers of the hour hand 3, the minute hand 4, and the second hand 5 are provided in the substantially central portion of the time display portion, and the moon age display portion is arranged on one side across the rotation center,
The tide indicator is located on the other side.

Next, a train wheel structure for driving the timepiece shown in FIG. 1 will be described with reference to FIGS. 3 and 4 are cross-sectional views showing the essential parts of the train wheel mechanism of the timepiece of FIG.
FIG. 5 is a plan layout view showing the outline of the train wheel of the timepiece of FIG. 1, and FIG. 6 (a) is a plan view showing a state of saku due to the overlapping of the moon plate and the shadow plate, FIG. (B) is a plan view showing a desired state due to the overlapping of the moon plate and the shadow plate, and FIG. 7 is a plan view of the tidal plate.

In the figure, numeral 9 is a fourth wheel and a second hand 5, 10 is a center wheel and a minute hand 4, and 11 is a hour wheel and is attached with an hour hand 3. Reference numeral 12 denotes a Hino back car, which meshes with the center pinion 10a of the center wheel 10 and the tubular gear 11a of the hour wheel 11, and the hour wheel 11 is constituted by an hour wheel gear 11a and an hour wheel pinion 11b. Further, reference numeral 13 is one of the three second intermediate wheels for adjusting the gear ratio, which is composed of the second intermediate wheel 13a and the second intermediate wheel 13b, and the main plate 14
The second day back gear 13a that is engaged with the second wheel back pin 15 fixed to the second wheel back pin 16 is held by the back plate 16 and the second wheel back gear 13a that meshes with the hour wheel pinion 11b and the second wheel wheel 17 that meshes with the second hour wheel 17 A slip function unit 13c that slips with a load of a predetermined torque or more is provided between the Hinoura kana 13b. Reference numeral 18 is an adjusting wheel of a second intermediary wheel for adjusting the gear ratio, and is composed of an upper adjusting gear 18a that meshes with the second hour wheel 17 and the shadow wheel 19 and a lower adjusting gear 18b that meshes with the month wheel 30. Then, the back wheel 16 is loosely engaged with the adjusting wheel pin 31 fixed to the main plate 14 to hold the vertical oyster. Reference numeral 17 is a second hour wheel, which is loosely engaged with the hour wheel 11 so that the hour wheel 11 and a needle seat 32 for removing the effect of backlash of the train wheel are combined to form a main plate 14 and a back plate 16.
Has been held between and including the oyster. The month wheel 30 is engaged with the month wheel pin 33 fixed to the main plate 14, and the shadow wheel 19
Is attached to the month wheel 30, and the back plate 16 holds the month wheel 30 together with the shadow wheel 19 and the needle seat 34 for removing the influence of the backlash of the train wheel. In addition, the moon wheel 30, the shadow wheel 19 at one end of the dial 2 side, the moon plate 6, respectively
A shadow plate 7 is attached. 35 is the second adjusting wheel of the third intermediary vehicle for adjusting the gear ratio, and the second adjusting upper gear 35
a and a second adjusting lower gear 35b, and is loosely engaged with the second adjusting wheel pin 36 fixed to the main plate 14, and the back plate 16 holds the vertical edge. A slip function unit 35c that slips with a load equal to or greater than a predetermined torque between the second adjusting upper gear 35a that meshes with the correction transmission gear 37 of the wheel 37 and the second adjusting lower gear 35b that meshes with the tidal gear 38a of the tidal wheel 38. Is provided. 38 is a tidal wheel, which is composed of a tidal gear 38a and a tidal pinion 38b having sawtooth-shaped teeth, and is engaged with a tidal wheel pin 39 fixed to the main plate 14 to eliminate the influence of wheel train backlash. It is held between the back plate 16 and the needle seat 40 for the purpose of including the sword oyster. A tide plate 8 is attached to one end of the tide wheel 38 on the dial 2 side. 37 is a correction transmission wheel, which is composed of a correction transmission gear 37a that meshes with the second adjustment upper gear 35a of the second adjustment wheel 35 and a correction transmission gear 37b that meshes with the correction wheel 41, and is fixed to the main plate 14. Correcting transmission Wheel pin 42 is loosely engaged with the back plate 16 to keep the sword, and the rotation of crown 43 to correction wheel 41 by winding stem 44 does not idle at normal position 43a. Four
In 3b, the correction wheel 41 is transmitted integrally with the mountain portion 44a of the winding stem 44, but at the two-step pulling position 43c, the correction wheel 41 moves in the winding stem 44a.
Since the engagement with the is released, the rotational movement from the crown 43 is transmitted to the correction transmission wheel 37 via the correction wheel 41 only at the one-step pull position 43b. 45 is a rotation direction restricting lever of the tidal wheel 38, which is loosely engaged with the lever pin 46 and has engaging portions 45a and 45b provided with slopes so as not to bulge each against the right rotation of the tidal kana 38b of the tidal wheel 38. , The engaging portion 45c and 45d formed so as to produce a bulge against the left rotation of the tide wheel 38b of the tide wheel 38, the mountain portion formed by the engaging portions 45a and 45c. When engaging with the tip of the tidal pinion 38b, the other engaging portion 45b, 45
The mountain portion formed by d is located on the tooth crest of the tidal cane 38b, and conversely, when the mountain portion formed by the engaging portions 45b and 45d engages with the tip of the tidal cane 38b, the engaging portion The ridges formed by 45a and 45b are arranged so as to be located at the teeth of the tidal cane 38b, and when the tidal wheel 38 is rotated to the right, the tip of the tidal cane 38b is the engaging portion of the rotation direction regulating lever 45. Since 45a and 45b are moved alternately, the rotation direction control lever 45 slips through without making a small reciprocating turning motion, and the tidal wheel 38 continues to rotate to the right, but the tidal wheel
When 38 is rotated counterclockwise, one of the engaging portions 45b or 45d of the rotation direction restricting lever 45 and the tidal kana 38b is stretched, and the slip function portion 35c of the second adjusting wheel 35 that meshes with the tidal wheel 38 slips. The tide wheel 38 and the second adjusting lower gear 35b of the second adjusting wheel 35 do not rotate, but only the second adjusting upper gear 35a rotates to the right.

 Next, the operation will be described.

In FIGS. 3 and 4, the reduction gear ratio from the fourth wheel & pinion 9 to the minute pinion 10a is set to 1/60, which is a common ratio.
By setting the speed reduction ratio from the vehicle to the hour wheel 11 via the Hino Uraguruma 12 to 1/12, the hour wheel 11 rotates once every 12 hours.

The average period of Sakugetsu, or moon phases, is 29.530589
In order to adjust the rotation speed of the moon 6 to the apparent average movement speed of the moon on a daily basis, It is necessary to configure the number of teeth of the train wheel from the hour wheel 11 to the month wheel 30 so that the value becomes very close to the rotation, that is, 0.96613681 rotation.

In addition, the shadow plate 7 displays the age of the moon using the rotation difference from the moon plate 6, and as shown in FIG. 6 (a), the round hole 6a of the moon plate 6 is exactly on one of the shielding portions 7a of the shadow plate 7. It is configured so that when it overlaps, as shown in FIG. 6 (b), when it is located at one of the intermediate positions 7b of the shielding portion 7a, the wish is displayed. Assuming that the number is m (m is an integer of 2 or more), the shadow plate 7 needs to be delayed at a rate of one rotation per 29.530589 × m days relative to the moon plate 6 from the apparent movement direction and the direction of the phases. Shadow wheel 19 per month for 30 It is necessary to configure the number of teeth of the train wheel from the hour wheel 11 to the shadow wheel 19 so as to be delayed by a value very close to the rotation, that is, 0.03386319 / m rotation.

In the case of the present embodiment, m = 3, and an example of a combination of the number of teeth having a small maximum number of teeth and good approximation accuracy is as follows.
23 teeth of b, 41 teeth of second gear 13a, 40 teeth of second gear 13b, upper adjusting gear 18a of adjusting wheel 18
Number of teeth of 45, lower adjustment gear 18b, 31 of month wheel 30
By setting the number of teeth to 2 and the number of teeth of the shadow wheel 19 to 47, the monthly wheel 30 rotates 0.96612466 a day, and the annual cumulative error of the moon 6 is only 1.6 ° behind the apparent average movement of the moon. Shadow car 1
9 is 0.01128773 per day against the rotation speed of the month wheel 30 above
Although the rotation is slow, it needs to be very close to 0.95483693 rotation, but in the above tooth sequence, the shadow wheel 19 makes 0.95485210 rotations per day, and the annual cumulative error of the shadow plate 7 with respect to the moon plate 6 is 2.0 °, which means that That's just a 0.5 day delay.
Here, the hour wheel 11 is a combined hour wheel composed of the hour wheel gear 11a and the hour wheel pinion 11b, because the second hour wheel back wheel 13 and the adjusting wheel 18 are used to move from the hour wheel 11 to the month. Even when adjusting the ratio of the number of teeth of the train wheel reaching the wheel 30 and the shadow wheel 19, the number of teeth combinations is limited, so the number of teeth of the hour wheel and pinion 11b is not restricted by the condition of meshing with the Hinoura wheel 12 Because you can choose.

Average tidal cycle is 1/2 lunar day or 12 hours 25 minutes 14.164
Assuming that the number of low tides or high tides displayed during one rotation of the tidal plate 8 per second is n, the tidal wheel 38 can be used for one day (24 hours) to adjust the rotation speed of the tidal plate 8 to the average tidal cycle. / 12
Time 25 minutes 14.164 seconds) / n revolutions, that is, in the present embodiment, n = 2, so that the rotation speed of the tidal wheel 38 is very close to 0.96613681 rotations per day, which is equal to the rotation speed of the month wheel 30. It is necessary to configure the number of teeth of the train wheel from the hour wheel 11 to the tide wheel 38. In this embodiment, the hour wheel pinion 11b of the hour wheel 11 has 23 teeth, and the second date wheel 13 has a tooth number of 41.
When the number of teeth is 40, the number of teeth of the second day back kana 13b is 40, the maximum number of teeth is small, and an example of a combination of teeth with good approximation accuracy is shown below.
The number of teeth of the tidal gear 38a of the tidal wheel 38 is equal to the number of teeth of the month wheel 30 3
Two, the condition that the number of teeth of the second adjusting wheel 35 is equal to the number of teeth of the adjusting wheel 18, that is, the number of teeth of the second adjusting upper gear 35a is 45, and the number of teeth of the second adjusting lower gear 35b is 31. The tidal wheel 38 rotates 0.96612466 a day like the monthly wheel 30 and the annual cumulative error of the tidal plate 8 is 1.6 ° behind the average tidal cycle. The annual cumulative error is a value that is sufficiently smaller than the average period of tidal tide, and it may be considered that the tide plate 8 makes one revolution in one lunar day.

Further, since the number of teeth of the second hour wheel 17 has a function as an idler that also serves to correct the rotational direction, it may be set to the most advantageous number depending on the usable module range and the plane arrangement condition of the train wheel.

Further, the moon plate 6 and the shadow plate 7 are provided by a train wheel including the correction transmission wheel 37 within a range that does not cause any problem in knowing the approximate position of the moon and the age of the moon by the slip mechanism of the second day wheel 13; The tide plate 8 is fitted to the hour hand 3 and the minute hand 4 at the one-step pulling position 43b of the crown 43 by the slip mechanism of the second adjusting wheel 35 and the rotation direction regulating lever 45 engaging with the tide pin 38b of the tide wheel 38. Since it is possible, the structure does not require any special alignment during installation.

 The operation at the time of initial adjustment will be described below.

First, the south-central time of the moon at the observation site on the day before the day to be matched, the age of the moon at the south-central time, and the elapsed time from the low tide are calculated from the science chronology.

By pulling out the crown 43 from the normal position 43a to the two-step pulling position 43c, the hour hand 3 and the minute hand 4 are adjusted by the normal operation at the south central time of the previous day.

Next, pull crown 43 from second pull position 43c to first pull position 4
When set to 3b, the correction wheel 41 engages with the winding stem 44, and the rotational force of the crown 43 causes the correction wheel 41, the correction transmission wheel 37, and the second adjustment upper gear 35a of the second adjustment wheel 35 Adjustment car 18 via two-cylinder wheel 17
Then, the rotational force is transmitted from the adjusting wheel 18 to the month wheel 30 and the shadow wheel 19. At the time of the above transmission, the slip function portion 13c of the second wheel 13 is slipped, the hour hand 3 and the minute hand 4 are not quickly corrected, and the moon wheel 6 and the shadow wheel 19 attached to the month wheel 30 are displayed in the moon display section. Attached shadow plate 7 is crown
It is quickly corrected by the rotation of 43.

Using the above operation, the crown 43 is rotated forward and backward, and one of the round hole 6a of the moon plate 6 and the shield portion 7a of the shadow plate 7 is directed toward the 12 o'clock position mark 21a indicating the south-central direction of the moon on the dial 2. Align the two so that they are exactly on top of each other so that they match each other and display Saku. At this time, the age display section indicates the south of the middle of the age of 0. In this case, in the first fitting state of the shadow plate 7 after repeating the state where the round hole 6a of the moon plate 6 coincides with the 12 o'clock position mark 21a of the dial plate 2,
The shielding part 7a of the shadow plate 7 does not completely overlap with the round hole 6a of the moon plate 6 and there is a gap of 0.52 days or less in terms of the age, but 0.27 to 0.52
In the case of a day shift, the crown 43 is further rotated to the position where the shadow plate 7 is fitted next, so that the fraction of the average period of the moon phases is about 0.53 days, so a shift of 0.27 days or less Can fit in. Here, since the moon plate 6 makes about 0.966 rotations per day, one rotation of the moon plate 6 to the right corresponds to an advance of about 1 / 0.966, or about 1.035, in terms of the age of the moon.

Therefore, if the crown 43 is still in the single-pull position 43b and the moon plate 6 is further rotated right by an integer closest to the value obtained by dividing the age at the south-central time of the previous day by 1.035, the time at the south-central time of the previous day will be reached. This means that the position of the moon and the age of the moon have been almost exactly matched. In this case, too, there will be a deviation of 0.52 days or less when converted to the age of the moon, and adding the above-mentioned 0.27 days will cause a deviation of the age of up to 0.79 days, but it is accurate enough to know the approximate state of the moon. Can be said.

Next, the operation of fitting the tidal plate 8 to the moon plate 6 and the shadow plate 7 will be described. In the one-pulled state 43b of the crown 43, the rotational force of the crown 43 is transmitted from the winding stem 44 to the tide wheel 38 via the correction wheel 41, the correction transmission wheel 37, and the second adjustment wheel 35. Here, when the crown 43 is rotated so that the moon plate 6 and the shadow plate 7 rotate to the right, the rotation direction restricting lever 45 that engages with the tide pin 38b of the tide wheel 38 slips through without causing bulging, so that it is displayed on the display surface. Month wheel 30 and shadow wheel driven from the tide plate 8 and the second adjusting upper gear 35a through the second hour wheel 17 and the adjusting wheel 18.
The moon plate 6 and the shadow plate 7 respectively attached to 19 are rotated to the right at a predetermined rotation ratio. On the contrary, crown 43 with moon plate 6 and shadow plate 7
Is rotated so as to rotate counterclockwise, one of the engaging portions 45c or 45d of the rotation direction regulating lever 45 and the tide pin 38b of the tide wheel 38 causes a bulge to cause the second adjustment wheel 35 to rotate. Since the slip function part 35c of the above slips, the tide plate 8 stops on the display surface, and the moon plate 6 and the shadow plate 7 are rotated counterclockwise at a predetermined rotation ratio. By using the above operation, the crown 43 is rotated clockwise and counterclockwise within a certain angle range to intermittently rotate the tide plate 8 rightward, and the hour hand 3 and the minute hand 4 indicate the south-central time of the previous day's moon, The circular hole 6a of the moon plate 6 is aligned with the 12 o'clock position mark 21a indicating the south-central direction of the dial 2 and the moon age at the south-central time of the previous day's moon is displayed due to the overlapping of the moon plate 6 and the shadow plate 7. And the low tide time at the time of the south-central time of the moon on the previous day (the reading mark 8b on the tide plate 8 is the low tide reference mark on the dial 2)
The state in which the tide plate 8 is rotated to the right by the rotation angle corresponding to the elapsed time from the state (matching 23c)

Next, pull crown 43 from first pull position 43b to second pull position 4
When it is pulled out to 3c, the rotation of the crown 43 engages the winding wheel (not shown) engaged with the winding stem 44, the Hinoura wheel 12, the hour wheel 11, the second Hinowheel wheel 13, and the second hour wheel 17. It is transmitted to the adjusting wheel 18 and the second adjusting wheel 35 via the adjusting wheel 18 and the month wheel 30 and the shadow wheel 19
The torque is transmitted from the second adjusting wheel 35 to the tide wheel 38. Here, when the crown 43 is rotated to the right so that the hour wheel 11 is rotated to the right, that is, to advance the time display, the rotation direction restricting lever 45 that engages with the tidal pinion 38b of the tidal wheel 38 slips on without causing any bulging. Then, the hour hand 3, the minute hand 4, the moon plate 6, the shadow plate 7, and the tide plate 8 are all rotated right at a predetermined rotation ratio. After moving forward to the current time of the day by paying attention to morning and afternoon using the above operation, the second hand 5 is started by returning the crown 43 from the double pull position 43c to the normal position 43a, and the moon plate 6 and the shadow are shaded. The initial setting of the plate 7, the tide plate 8 and the time is completed.

If the south-central part of the moon does not occur on the previous day, the south-central part of the month before two days before, the moon age at the south-central part of the time, and the elapsed time from the low tide are used to set the above-mentioned points at the south-central part of the month before the preceding day. After pulling in, until the current time of the day, the crown is in the second pull position 43.
After advancing the display with c, return the crown 43 to the normal position 43a and start the clock.

The reason why the low tide time is used for the initial adjustment is that the low tide time interval generally has less variation than the high tide time interval, and the difference between the actual low tide and the high tide time after adjustment is small.

The clock shown in Fig. 1 shows 10:09:35 am, the age of 26, and the state of approximately 3 minutes up. The average position of the moon and the age of the moon are displayed on the age display part, and the simple tidal display part is displayed. The reading mark 8b of the tide plate 8 corresponds to the guide mark 23e indicating the rising and terminating three minutes of the dial plate 2 and the approximate elapsed time from low tide and the time until the next high tide can be known, and the tide display of the tide plate 8 The distribution of the light-colored portion 23a and the dark-colored portion 23b of the dial 2 displayed in the window 8a allows the user to know the approximate tide condition at a glance.

Further, in the present embodiment, a circular tidal plate provided with a tidal display window was used, but it is also clear that it is possible to display using a needle-shaped tidal plate in the case of displaying only the guideline of the elapsed time from low tide or high tide. Is.

〔The invention's effect〕

As is clear from the above description, according to the present invention, in addition to the age display function for simultaneously displaying the average position and age of the moon,
The current approximate tides can be judged at a glance as a graphic change without using registering.At the same time, the moon display also gives an indication of the difference in tides, and the time elapsed since the previous low tide or high tide. It is equipped with a simple tide display function that allows you to see the standard of the time and the time until the next low tide or high tide. A clock with a simple age and simple tide indicator with excellent operability at the time of adjustment can be obtained, and especially during the high tide when the tidal range is large, the difference from the average tidal cycle is relatively small, so it is not only for sea fishing but also for astronomical observation. Can be used, and the practical effect is great. Further, according to the present invention, since the age display and the tide display can be simultaneously displayed by using the wheel train mechanism for displaying the time, the function can be enhanced with a relatively simple configuration.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is a plan view of a timepiece with a moon age / simplified tide indicator, FIG. 2 is a plan view of a dial of the timepiece of FIG. 1, and FIG. FIGS. 4 and 5 are sectional views showing the essential parts of the train wheel mechanism of the timepiece of FIG. 1, FIG. 5 is a plan layout view showing the outline of the train wheel of the timepiece of FIG. 1, and FIG. 6 (a) is Plan view showing the state of saku due to the overlapping of the moon plate and the shadow plate, 6th
FIG. 7B is a plan view showing a desired state due to the overlapping of the moon plate and the shadow plate, and FIG. 7 is a plan view of the tidal plate. 2 ... Dial plate, 3 ... hour hand, 4 ... minute hand, 5 ... second hand,
6 ... Moon plate, 7 ... Shadow plate, 8 ... Tidal plate, 19 ... Shadow wheel,
30 …… Month wheel, 38 …… Tidal wheel.

Claims (1)

[Claims] 1. A timepiece having a time display section for displaying the time by means of a pointer driven by a train wheel mechanism of the timepiece, a moon display section for displaying the age of the moon, and a tidal display section for displaying the tide. The center of rotation of the pointer is provided in the substantially central part of the part, and the moon age display part is arranged on one side across the center of rotation, and the tidal display part is arranged on the other side. A moon background part for displaying the color of the moon, a moon plate driven by the train wheel mechanism and having a round hole for displaying a part of the moon background part as the moon, and the moon phases And a tide background portion for displaying the ebb and flow of the tide,
It has a window part for displaying a part of the tidal background part and is driven by the train wheel mechanism, and makes one revolution at an average tidal cycle (1/2 lunar day) x n (n is a natural number) in synchronization with time. A watch with a simple age indicator and a simple tide indicator.