JP2020169824A - Moon age display clock - Google Patents

Abstract

To provide a moon age display clock capable of allowing a user to easily recognize the correct moon age.SOLUTION: A moon age display clock 1 includes: a first member 220 that rotates once a day; a second member 25 that rotates M-1 times in M days on the coaxial with the first member 220 when a period of synodical month is defined as M days; moon age notation parts 221, 222, 223 representing the moon age, which are provided on the first member 220 or the second member 25; and a moon age indication part 251 that indicates the moon age notation parts 221, 222, 223, which are provided on the other part of the first member 220 or the second member 25.SELECTED DRAWING: Figure 1

Description

The present invention relates to a moon age display clock that displays the positions of the sun and the moon and displays the age of the moon.

Patent Document 1 discloses a clock having a moon position and moon age display mechanism. In this clock, the ecliptic and the number indicating the sun position on the day of each month are written on the ecliptic, the planisphere that rotates in synchronization with the diurnal motion of the star, the index showing the moon position and the age of the moon are written. It has a planisphere and a moon that rotates at a predetermined rotation ratio. The user can estimate the position of the sun today by the numbers on the ecliptic, connect the position of the sun and the center of the moon with a virtual straight line, and know the age of the moon by the age scale on the moon through which the straight line passes. Can be done.

JP-A-2009-229069

The clock has a problem that the user must guess the position of the sun and read the age scale, and the user may recognize the wrong age.

The moon age display clock of the present disclosure has a first member that rotates once a day and a first member that rotates coaxially with the first member, and when the cycle of the lunar month is M days, it rotates M-1 on the M days. Two members, a lunar age notation portion provided on one of the first member or the second member to indicate the lunar age, and a lunar age notation portion provided on the other of the first member or the second member to indicate the lunar age notation. It is characterized by having an instruction unit.

In the moon-age display clock of the present disclosure, the moon-age notation unit indicates the moon-age in the form of a number or the moon, and the moon-age indicator indicates the moon-age by indicating the number of the moon or the shape of the moon. Is preferably displayed.

In the moon age display clock of the present disclosure, the first member is a disk-shaped sun plate, the second member is a pointer-shaped moon hand, and the moon age notation portion is provided on the sun plate. It is preferable that the moon age indicator is provided on the moon hand.

In the moon age display clock of the present disclosure, the first member is a pointer-shaped sun hand, the second member is a disk-shaped moon plate, and the moon age notation portion is provided on the moon plate. The moon age indicator is preferably provided on the sun needle.

In the moon age display clock of the present disclosure, the moon plate provided on the opposite side of the moon plate from the sun hand and the moon plate are driven in conjunction with the rotation of the sun hand, and the moon. It has a planetary gear mechanism that is driven in conjunction with the rotation of the plate, the lunar plate has a circular opening, and the sword plate has the above-mentioned plan view seen from a direction perpendicular to the lunar plate. It is preferable to have a bright region and a dark region visible from the opening as the sun needle and the lunar plate rotate.

In the moon age display clock of the present disclosure, the first vehicle in which the first member is fixed and makes one rotation in one day and has the first gear, and the second member are fixed and M-1 in the M day. The first gear includes a second wheel that rotates and has a second gear, a first intermediate gear that meshes with the first gear, and an intermediate wheel that has a second intermediate gear that meshes with the second gear. When the number of teeth is a, the number of teeth of the second gear is d, the number of teeth of the first intermediate gear is c, and the number of teeth of the second intermediate gear is b, a = 59, b = 103, c = It is preferable that 74 and d = 85.

In the moon age display clock of the present disclosure, the hour hand, the cylinder wheel for fixing the hour hand, the second wheel for which the second member is fixed, M-1 rotations in the M days, and the second gear is provided. The cylinder intermediate gear that meshes with the cylinder wheel and the intermediate wheel having the second intermediate gear that meshes with the second gear are provided, the number of teeth of the cylinder wheel is e, the number of teeth of the cylinder intermediate gear is f, and the second When the number of teeth of the intermediate gear is g and the number of teeth of the second gear is h, it is preferable that e = 59, f = 148, g = 103, and h = 85.

In the moon age display clock of the present disclosure, the M is preferably 29.53059.

The moon age display clock of the present disclosure is fixed to the sun wheel that rotates once a day, the moon wheel that rotates M-1 on the M day when the cycle of the lunar month is M day, and the moon wheel. , A lunar plate formed in a disk shape and having a circular opening, a lunar month wheel that is rotated coaxially with the lunar wheel, and a light that is fixed to the lunar month wheel and is visible from the opening of the lunar plate. A planetary gear mechanism having a lunar month plate having a region and a dark region, and a lunar feed gear that is driven in conjunction with the rotation of the solar wheel and is driven in conjunction with the rotation of the lunar wheel to rotate the lunar month. It is characterized by having.

It is a front view which shows the moon age display clock of 1st Embodiment. It is sectional drawing which shows the main part of the movement of the moon age display clock. It is a top view which shows the main part of the movement of the moon age display clock. It is sectional drawing which shows the main part of the correction mechanism of the moon age display clock. It is a figure which shows the combination of the number of teeth of the moon wheel, the sun wheel, and the sun moon intermediate wheel of the moon age display clock. It is a figure which shows the combination of the number of teeth of the moon wheel, the cylinder wheel, and the sun moon intermediate wheel of the moon age display clock. It is a front view which shows the moon age display clock of 2nd Embodiment. It is a top view which shows the syzygy board of the moon age display clock. It is sectional drawing which shows the main part of the movement of the moon age display clock. It is a top view which shows the main part of the movement of the moon age display clock. It is a figure which shows the example of the moon age display by moving between the moon plate and the syzygy board of the moon age display clock.

[First Embodiment]
The moon age display clock 1 of the first embodiment will be described with reference to FIGS. 1 to 6.
As shown in FIG. 1, the age display watch 1 is a pointer-type watch, and includes a case 4 for accommodating the display unit 2 and the movement 3 and a crown 5. The case 4 is a general watch case including a body, a cover glass, and a back cover.
The display unit 2 includes a dial 20, an hour hand 21, a minute hand 22, a second hand 23, and a pointer-shaped moon hand 25.

The dial 20 includes a fixed dial 210 and a sun plate 220. The fixed dial 210 is composed of a disk having a circular opening 211 in the center of a plane. That is, the fixed dial 210 is formed in an annular shape and is arranged on the outer peripheral side of the sun plate 220. The fixed dial 210 is provided with indexes 215 at intervals of 30 degrees. The index 215, also called an hour letter, is a scale arranged to represent the time. Therefore, the index 215A is a scale indicating 12 o'clock.

The sun plate 220 is composed of a disk that is visible through the opening 211 of the fixed dial 210. The sun plate 220 is configured to be rotatable integrally with the solar wheel 52, which will be described later, and makes one rotation in 24 hours.
The rotation axis of the sun plate 220, that is, the rotation axis of the solar wheel 52 is coaxial with the rotation axes of the hour hand 21, the minute hand 22, the second hand 23, and the moon hand 25, and is provided at the center of the plane of the dial 20.

On the sun plate 220, a sun mark 221 that imitates the shape of the sun, a plurality of moon marks 222 that imitate the shape of the moon, and a moon age mark 223 that represents the age of the moon are printed. The sun mark 221 and the moon mark 222 are displayed along the outer circumference of the sun plate 220.
The moon age mark 223 is printed on the inner peripheral side of the sun mark 221 and the moon mark 222. Further, the moon age mark 223 is represented by the moon age number 223A and the dot 223B. The moon age number 223A indicates an odd moon age, and the dot 223B indicates an even moon age. In the moon age mark 223, even numbers may be represented by numbers and odd numbers may be represented by dots, or all may be represented by numbers.
The shape of the moon and the age of the moon are determined by the positional relationship between the sun and the moon, and when they match, the age of the new moon is 0, and when they deviate by 180 degrees, the age of the full moon is approximately 15. On the sun plate 220, the sun mark 221 is printed at the position of the new moon, and the moon mark 222 is printed with 222A to 222K having shapes corresponding to the ebb and flow of the moon at positions substantially corresponding to each moon age mark 223. The moon mark 222F is a mark indicating a full moon of about 15 months of age, and is printed at a position facing the sun mark 221 with the rotation axis of the sun plate 220 of the sun plate 220, that is, a position rotated by 180 degrees.
The moon hand 25 includes an instruction unit 251 that indicates the sun mark 221 and the moon mark 222 and the moon age mark 223 on the sun plate 220.

The hour hand 21 has a state in which the sun mark 221 of the sun plate 220 is aligned with the index 215A indicating the 12 o'clock position, that is, the plane center point of the sun mark 221 is on the virtual line connecting the rotation axis of the sun plate 220 and the index 215A. In the positioned state, attach the index 215A at the indicated 12 o'clock position. Since the sun plate 220 makes one revolution in 24 hours, the sun mark 221 has the same function as the 24-hour hand of a clock. Therefore, when the 12 o'clock position of the moon age display clock 1 is turned to the north, the sun mark 221 indicates the actual direction of the sun.

With respect to the earth, the sun makes one revolution in a day, and the moon makes one revolution in about 24 hours and 50 minutes. Therefore, the moon lags the sun by one revolution on the M day, which is the cycle of the lunar month, that is, about 29.53059 days. That is, 28.53059 rotations in 29.53059 days.
The lunar hand 25 is fixed to the lunar wheel 51, which will be described later, and rotates about 28.53059 on the lunar month, that is, M day = about 29.53059 days, like the actual moon. Therefore, when the moon hand 25 is aligned with the position of the moon age 0, that is, the position indicating the sun mark 221 at the time of the new moon, after that, when the 12 o'clock position of the moon age display clock 1 is turned to the north, the instruction of the moon hand 25 is indicated. Part 251 indicates the direction of the actual moon.

[Movement]
Next, the movement 3 of the moon age display clock 1 will be described with reference to FIGS. 2 and 3.
The movement 3 is a movement 3 of a mechanical timepiece driven by a zenmai, and as shown in FIG. 2, a main plate 11, a second receiver 12, a train wheel receiver 13, and a barrel barrel (not shown) incorporating the zenmai. , It is equipped with a train wheel rotated by a barrel wheel and a speed control mechanism for controlling the rotation speed of the train wheel. As the speed governor, a general speed governor of a mechanical timepiece equipped with an escape wheel, ankle, etc. may be used, or it is driven by a generator equipped with a rotor rotated by a train wheel and the electric power generated by the generator. A speed governor mechanism of an electronically controlled mechanical timepiece including a braking control circuit for controlling the rotation of the rotor may be used.
Further, as the age display clock 1, a quartz clock in which each pointer is driven by a motor can also be realized. That is, the age display clock 1 may be a clock having a pointer, and the driving method of the pointer is not limited.

The train wheel rotated by the barrel wheel includes a second wheel 41, a third wheel and a fourth wheel 42 (not shown). In the present embodiment, the second wheel 41 is rotatably supported by the main plate 11 and the second receiver 12, and the fourth wheel 42 is rotatably supported by the second wheel 41 and the train wheel receiver 13.
The second hand 23 is attached to the shaft 421 of the fourth wheel 42, and the minute hand 22 is attached to the cylinder kana 45 fitted to the shaft of the second wheel 41. The hour hand 21 is attached to the cylinder wheel 46 that rotates via the back wheel 43 on the day when it meshes with the cylinder kana 45. The back wheel 43 of the day is not shown in FIG. 2, but is shown in FIG.

A lunar wheel 51 is rotatably attached to the outer peripheral portion of the rotating shaft of the cylinder wheel 46, and a solar wheel 52 is rotatably attached to the outer peripheral portion of the rotating shaft of the lunar wheel 51.
The lunar wheel 51 includes a shaft portion 511, a gear 512, and a kana 513. The shaft portion 511 is formed in a cylindrical shape and is rotatably supported by a cylinder wheel 46 arranged inside the shaft portion 511. The gear 512 is continuously formed at the end of the shaft portion 511 on the main plate 11 side and meshes with the lunar intermediate gear 63 of the solar lunar intermediate vehicle 60 described later. The kana 513 is press-fitted into the shaft portion 511 and rotates integrally with the shaft portion 511 and the gear 512, and meshes with the fifth-age correction transmission wheel 86 described later.

A moon hand 25 is attached to the shaft portion 511 of the moon wheel 51. As shown in FIG. 1, the moon hand 25 has a disk-shaped indicator 251 imitating a full moon at its tip, and the moon age mark 223 on which the indicator 251 overlaps and the sun mark located near the indicator 251. The age of the moon is indicated by the positional relationship with 221 and the moon mark 222. The shape of the indicator portion 251 of the moon hand 25 is not limited to a disk shape, but may be a half moon shape or a crescent shape. Further, the moon hand 25 may be formed in the same manner as a normal pointer, but if it is configured so that it can be distinguished from the hour hand 21, the minute hand 22, and the second hand 23 by coloring or shortening the length. Good.

The solar wheel 52 includes a shaft portion 521 and a gear 522. The shaft portion 521 is formed in a square columnar shape having a square planar shape, and a through hole into which the shaft portion 511 of the lunar wheel 51 is inserted is formed in the central portion thereof, and is rotatably supported by the shaft portion 511. ..
A sun plate 220 is rotatably attached to the shaft portion 521 of the sun wheel 52 integrally with the sun wheel 52. That is, a square hole having a square planar shape is formed in the center of the plane of the sun plate 220, and by inserting the shaft portion 521 of the sun wheel 52 into the square hole, the sun board 220 is integrated with the sun wheel 52. Rotate.
The outer peripheral edge of the sun plate 220 overlaps the inner peripheral edge along the opening 211 of the fixed dial 210 in a plan view, and the sun plate 220 located on the main plate 11 side of the fixed dial 210 is on the cover glass side. Movement is regulated by the fixed dial 210. In the present embodiment, viewing from a direction perpendicular to the dial 20 is referred to as plan view.

The moon wheel 51 and the sun wheel 52 are rotated by the sun moon intermediate wheel 60 that transmits the rotation of the cylinder wheel 46. The solar lunar intermediate wheel 60 is composed of four bodies: a true 61, a tubular intermediate gear 62, a lunar intermediate gear 63, and a solar intermediate gear 64.
Shin 61 is press-fitted and fixed to the main plate 11. The cylinder intermediate gear 62 is rotatably supported by a true 61 and meshes with a kana 461 that rotates integrally with the cylinder wheel 46. Here, since the number of teeth of the kana 461 of the cylinder wheel 46 is 59 and the number of teeth of the cylinder intermediate gear 62 is 148, the cylinder intermediate gear 62 reduces the rotation of the cylinder wheel 46 at a tooth ratio of 59: 148. ..
The solar intermediate gear 64 is press-fitted into the shaft portion of the tubular intermediate gear 62 and meshes with the gear 522 of the solar wheel 52. Here, since the number of teeth of the sun intermediate gear 64 is 74 and the number of teeth of the gear 522 of the solar wheel 52 is 59, the solar intermediate gear 64 increases the rotation of the sun moon intermediate wheel 60 by a gear ratio of 74:59. Speed up and tell the sun wheel 52. Therefore, the rotation of the cylinder wheel 46 is decelerated by 1/2 and transmitted to the sun wheel 52 and the sun plate 220, which make one rotation in 24 hours.

The lunar intermediate gear 63 is slip-fitted into the shaft portion of the tubular intermediate gear 62 and meshes with the gear 512 of the lunar wheel 51. Here, since the number of teeth of the lunar intermediate gear 63 is 103 and the number of teeth of the gear 512 of the lunar wheel 51 is 85, the lunar intermediate gear 63 increases the rotation of the solar lunar intermediate wheel 60 by a gear ratio of 103: 85. It speeds up and slows down the rotation of the cylinder 46 to about 1 / 2.07 and transmits it to the moon wheel 51. Strictly speaking, this reduction ratio is 1 / 2.070100378, and the cylinder wheel 46 rotates 29.53059 × 2 rotations and the moon wheel 51 rotates about 28.53058752 rotations. That is, when the sun wheel 52 and the sun plate 220 that rotate once a day rotate 29.53059 via the cylinder wheel 46 that rotates twice a day, the moon wheel 51 and the moon hand 25 rotate about 28.53058752. At this time, the error of the monthly wheel 51 is 0.00000248 days in 29.53059 days, which is an error of one day in about 1100.

In the present embodiment, the first vehicle that makes one revolution in one day is the sun wheel 52, and the first gear of the first car is the gear 522 of the sun wheel 52. The first member fixed to the first vehicle is the sun plate 220.
When the lunar month cycle is M days, that is, 29.53059 days, the second car that rotates M-1 on M days is the moon wheel 51, and the second gear of the second car is the gear 512 of the moon wheel 51. is there. The second member, which rotates coaxially with the sun plate 220, which is the first member, and is fixed to the second wheel, is the moon hand 25.
Therefore, the moon age notation part is composed of the sun mark 221, the moon mark 222, and the moon age mark 223 provided on the sun plate 220 which is the first member, and the moon age indicator part is provided on the moon hand 25 which is the second member. It is composed of the indicated indicator 251.
The first intermediate gear that meshes with the gear 522, which is the first gear, is the sun intermediate gear 64, and the second intermediate gear that meshes with the gear 512, which is the second gear, is the lunar intermediate gear 63. The solar lunar intermediate wheel 60 is an intermediate wheel having a solar intermediate gear 64 which is a first intermediate gear and a lunar intermediate gear 63 which is a second intermediate gear, and a tubular intermediate gear 62 which meshes with the tubular wheel 46. It is also an intermediate vehicle having a second intermediate gear, a lunar intermediate gear 63.

[Moon car correction mechanism]
The lunar intermediate gear 63 has a slip structure and can rotate the lunar wheel 51 with respect to the cylinder wheel 46 and the solar wheel 52. The correction mechanism 70 of the moon wheel 51 will be described.
As shown in FIGS. 3 and 4, the correction mechanism 70 includes a winding wheel 71, a chisel 72, a squeeze wheel 73, a mandarin duck 74, a cannuki 75, a cannuki retainer 76, a small iron lever 77, a small iron wheel 78, and a lunar wheel correction wheel. It has a row 80.
The winding stem 71 can be pulled out in three stages of the 0th stage, the 1st stage, and the 2nd stage.
As will be described later, the moon wheel correction wheel train 80 includes a moon age correction vehicle 81, a first moon age correction transmission vehicle 82, a second moon age correction transmission vehicle 83, a third moon age correction notification vehicle 84, and a fourth moon age correction transmission vehicle 85. It is equipped with a fifth-month-old correction report vehicle 86.
The moon age correction vehicle 81 is rotatably supported by the small iron lever 77 together with the small iron wheel 78. The small iron lever 77 has the moon age correction vehicle 81 of the first month age when the winding stem 71 is located at the first stage. It is moved by the osidori 74 that rotates in conjunction with the pull-out operation of the winding stem 71 so that it meshes with the correction transmission wheel 82 and does not mesh with the 0th and 2nd stages.
As shown in FIG. 2, the fifth month-age correction transmission vehicle 86 meshes with the kana 513 of the moon vehicle 51.

The 0-step position of the winding stem 71 is not shown, but the winding operation of the zenmai is possible. The squeeze wheel 73 that rotates integrally with the winding wheel 71 rotates, the squeeze wheel 72 that meshes with the squeeze wheel 73 rotates, and the round hole wheel 79 that meshes with the squeeze wheel 72 also rotates. The rotation of the round hole wheel 79 is transmitted to the square hole wheel (not shown), and the mainspring is wound up.

As shown in FIGS. 3 and 4, the one-step position of the winding stem 71 is such that the moon wheel 51 can be corrected and operated. That is, when the winding wheel 71 is moved to the first stage, the mandarin duck 74, the cannuki 75, and the small iron lever 77 cause the tsutsumi wheel 73 to mesh with the small iron wheel 78 and rotate coaxially with the small iron wheel 78. 81 meshes with the 1st month age correction transmission wheel 82. Therefore, the rotation operation of the winding wheel 71 is transmitted to the moon age correction vehicle 81 via the tsutsumi wheel 73 and the small iron wheel 78, and further, the moon wheel is transmitted from the moon age correction vehicle 81 via the moon age correction transmission vehicles 82 to 86. It is transmitted to 51. Since the lunar intermediate gear 63 that meshes with the lunar wheel 51 has a slip structure, by operating the winding stem 71 in the first stage, the lunar wheel 51 is rotated with respect to the cylinder wheel 46 and the solar wheel 52 to move the lunar hand 25. You can move.

The two-stage position of the winding stem 71 is moved by the mandarin duck 74 and the small iron lever 77 to the position where the small iron wheel 78 meshes with the back wheel 43 of the sun, and the mandarin duck 74 and the cannuki 75 engage the small iron wheel 73 with the small iron wheel 78. Moved to position. Therefore, when the winding wheel 71 is operated, the cylinder kana 45 and the cylinder wheel 46 rotate via the connecting wheel 73, the small iron wheel 78, and the back wheel 43 of the sun, and the hour hand 21 and the minute hand 22 are corrected.

When assembling the moon age display clock 1, when the sun mark 221 of the sun plate 220 is at the 12 o'clock position of the fixed dial 210, the hour hand 21, the minute hand 22, and the second hand 23 are set to 0:00:00 (12:00). Install at the position of minutes 0 seconds).
Since the moon hand 25 can be corrected by pulling out the winding stem 71 to the first stage, it moves to the position of the current moon age. Thereby, the positions of the sun mark 221 and the moon hand 25 can be set according to the position of the sun and the position of the moon with respect to the earth.
Then, when the winding stem 71 is pulled out to the second stage and the hour hand 21 and the minute hand 22 are corrected to the current time, the sun plate 220 and the moon hand 25 also move via the sun moon intermediate wheel 60 to correspond to the current time. Move to the desired position.

After making the above initial settings, the rotation of the moon hand 25 with respect to the rotation of the sun mark 221 can be adjusted to the actual relationship between the sun and the moon as described above, and the accuracy is about 1 in 1000 years. The error can be suppressed to about a day.

[Effect of the first embodiment]
According to the moon age display clock 1 of the present embodiment, since the sun moon intermediate wheel 60 that transmits the rotation of the cylinder wheel 46 to the moon wheel 51 and the sun wheel 52 at a predetermined reduction ratio is provided, the sun makes one rotation in one day. When the car 52 and the sun plate 220 rotate 29.53059, the moon wheel 51 can be set to be delayed by almost one rotation. As a result, the lunar wheel 51 and the lunar hand 25 rotate approximately 28.53059 in the lunar month cycle M day = 29.53059 days, as in the actual moon, so that the age of the moon can be accurately indicated.

Since the movement 3 may add the moon wheel 51, the sun wheel 52, and the sun moon intermediate wheel 60 to the movement that drives the hour hand 21, the minute hand 22, and the second hand 23, the moon age display clock 1 has a relatively simple structure. It is possible to display the age of the moon with almost no error.
Since the correction mechanism 70 of the moon wheel 51 is provided, the user can easily correct the age instruction. The error of the moon age display clock 1 is as high as one day in about 1000 years, but since the user can periodically correct the indicated position of the moon hand 25, the indicated accuracy can be made extremely high.

Since the sun mark 221 and the moon hand 25 are linked to the movement of the sun and the moon with respect to the earth, that is, the user, the user can grasp the current positions of the sun and the moon. Therefore, as with the 24 hour hand, the user points the sun mark 221 toward the sun, and the index 215A indicating 12 o'clock on the fixed dial 210 indicates north, and the 3 o'clock, 6 o'clock, and 9 o'clock directions are You can easily know the direction to indicate east, south, and west, respectively. Furthermore, by pointing the moon hand 25 toward the moon at night, the azimuth can also be known. Therefore, the means for knowing the azimuth increases, and the azimuth can be easily confirmed by using the moon age display clock 1 even at night when the position of the sun cannot be confirmed.

The moon wheel 51 and the sun wheel 52 are interlocked with each other via one sun moon intermediate wheel 60, and the number of teeth of the sun wheel 52, which is the first gear, is a, and the number of teeth of the moon wheel 51, which is the second gear, is d. When the number of teeth of the solar intermediate gear 64, which is the first intermediate gear, is c, and the number of teeth of the lunar intermediate gear 63, which is the second intermediate gear, is b, a = 59, b = 103, c = 74, d = 85. Since it is set to, it is possible to construct a structure having a small gear and a small error.
That is, when the moon wheel 51 and the sun wheel 52 are rotated by one sun moon intermediate car 60, when the sun wheel 52 rotates 29.53059, each of the reduction ratios for realizing the reduction ratio such that the moon wheel 51 is delayed by almost one turn. A plurality of combinations of the number of teeth of the gear can be set as shown in FIG. Among these, the example of No. 12 in FIG. 5, that is, the example of the present embodiment has the longest period until the instruction error of the monthly wheel 51 becomes one day. Therefore, by setting the number of teeth in the present embodiment, it is possible to realize a highly accurate display of the age of the moon as compared with other combinations of the number of teeth.

The moon wheel 51 and the cylinder wheel 46 are connected by one solar moon intermediate wheel 60, the number of teeth of the cylinder wheel 46 is e, the number of teeth of the cylinder intermediate gear 62 is f, and the number of teeth of the second intermediate gear 63 is Assuming that the number of teeth is g and the number of teeth of the lunar wheel 51, which is the second gear, is h, e = 59, f = 148, g = 103, h = 85 are set, so that it can be configured with a small gear and can be configured. The structure can have a small error.
That is, when the moon wheel 51 and the cylinder wheel 46 are rotated by one sun moon intermediate car 60, each of the reduction ratios for realizing a reduction ratio such that when the sun wheel 52 rotates 29.53059, the moon wheel 51 is delayed by almost one turn. As shown in FIG. 6, a plurality of combinations of the number of gear teeth can be set. Among these, the example of No. 9 in FIG. 6, that is, the example of the present embodiment has the longest period until the instruction error of the monthly wheel 51 becomes one day. Therefore, by setting the number of teeth in the present embodiment, it is possible to realize a highly accurate display of the age of the moon as compared with other combinations of the number of teeth.

The solar lunar intermediate wheel 60 includes a tubular intermediate gear 62, a lunar intermediate gear 63, and a solar intermediate gear 64 that mesh with the tubular wheel 46, the lunar wheel 51, and the solar wheel 52, respectively, and has the highest precision number of teeth shown in FIGS. Since it is set to, it is not necessary to use two intermediate wheels, the number of parts can be reduced, and a highly accurate moon age display can be realized.

If the number of teeth of each gear is 150 or less, it can be realized with a small gear and the friction load is small, so that it is possible to prevent the duration from being significantly shortened. That is, it is difficult to secure the tooth profile accuracy in manufacturing a gear having 150 or more teeth. Further, a tooth profile having a module of 0.05 mm or less tends to have a problem in terms of strength. Further, a gear having a module of 0.05 mm and having more than 150 teeth has a large pitch circle with a diameter of 7.5 mm or more, and a frictional load due to its weight becomes large. On the other hand, according to the combination of the number of teeth in FIGS. 5 and 6, since the number of teeth of each gear is 150 or less, the tooth profile accuracy and strength of the gear can be ensured and the friction load can be reduced.

[Second Embodiment]
Next, the second embodiment of the present invention will be described with reference to FIGS. 7 to 11.
The age display watch 1B of the second embodiment includes a case 4 and a crown 5 as shown in FIG. The case 4 houses the display unit 2B and the movement 3B as in the first embodiment.
The display unit 2B includes an hour hand 21, a minute hand 22, and a second hand 23 similar to those in the first embodiment. Further, the display unit 2B has a pointer-shaped sun hand 26 instead of the moon hand 25 of the first embodiment, has a dial 20B instead of the dial 20, and further has a dial 20B and a movement 3B. It has a syzygy plate 241 arranged between them.

The dial 20B has a fixed dial 210B and a moon plate 230. Like the fixed dial 210, the fixed dial 210B is formed in an annular shape, and an index 215B indicating a time and an azimuth mark 216B indicating an azimuth are printed. Azimuth marks 216B are alphabets N, S, E, W indicating north, south, east, and west.

The lunar plate 230 is composed of a disc that can be visually recognized through the opening 211 of the fixed dial 210B. The lunar plate 230 is configured to be rotatable integrally with the lunar wheel 51B, which will be described later, and rotates approximately 28.53059 in the lunar month cycle M day = 29.53059 days, as in the case of the lunar hand 25 of the first embodiment.
A round hole 231 which is a circular opening indicating the position of the moon is formed in the lunar plate 230, and a lunar age number 232 indicating the age of the moon is written along the outer circumference of the lunar plate 230.

The syzygy board 241 is configured to be rotatable integrally with the syzygy wheel 240, which will be described later, and is used to display a state of fullness of the moon when visually recognized from the round hole 231 of the moon plate 230. As shown in FIG. 8, the syzygy plate 241 has bright regions 242 colored in white and dark regions 243 colored in black alternately arranged.
The bright region 242 includes a first bright region 242A, a second bright region 242B, and a third bright region 242C provided at 120 ° intervals.
The dark area 243 includes a first dark area 243A, a second dark area 243B, and a third dark area 243C provided at 120 ° intervals.
The syzygy plate 241 rotates in conjunction with the phase difference between the solar wheel 52B and the moon wheel 51B. The Syzygy plate 241 is displayed from the round hole 231 of the moon plate 230, and in combination with the round hole 231, the display imitates the shape of the moon.

Like the 24 hour hand, the sun hand 26 makes one revolution 24 hours a day and indicates the current time on a 24-hour display. The sun needle 26 has an indicator portion 261 shaped like the sun at its tip, and indicates the age of the moon by the age number 232 of the moon plate 230 on which the indicator portion 261 overlaps.
Therefore, in the moon age display clock 1B, the moon age indicator is composed of the indicator 261 of the sun hand 26, and the moon age indicator is composed of the moon age number 232 of the moon plate 230.
The shape of the indicator portion 261 of the sun hand 26 is not limited to that shown in FIG. 7, and can be distinguished from the hour hand 21, the minute hand 22, and the second hand 23, and the user can understand that the position of the sun is indicated. Just do it.
From the main plate 11 of the movement 3B, the syzygy plate 241, the moon plate 230, the sun hand 26, the hour hand 21, the minute hand 22, and the second hand 23 are arranged in this order.

The phases of the moon are determined by the positional relationship between the moon and the sun with respect to the earth, that is, the phase difference. For example, if the moon and the sun are at the same position with respect to the earth, it will be a new moon, and if they are 180 ° different, it will be a full moon. Therefore, the sun hand 26 is rotated once in 24 hours according to the position of the sun, the lunar plate 230 is rotated approximately 28.53059 in the lunar month cycle 29.53059 days according to the position of the moon, and the lunar plate 241 is rotated by the phase difference between the moon and the sun. It may be rotated according to.
Therefore, with the round hole 231 of the moon plate 230 at the 12 o'clock position, the sun hand 26 is attached at the 12 o'clock position, and the round hole 231 indicating the position of the moon and the sun hand 26 indicating the position of the sun are attached. When attached to the position corresponding to the age of 0, the shape of the moon is determined according to the phase difference between the moon and the sun. Therefore, the user of the moon age display clock 1B only needs to adjust the position of the sun hand 26 to the current number of the moon age once after adjusting the time, and unless the moon age display clock 1B is stopped, the moon age is corrected for about 1000 years. There is no need to do it. Further, even if the moon age display clock 1B is stopped, it is only necessary to adjust the sun hand 26 to the moon age after adjusting the time, and it can be easily corrected.

[Movement]
Next, the movement 3B of the moon age display clock 1B will be described with reference to FIGS. 9 and 10.
The movement 3B is a movement 3B of a mechanical timepiece driven by a mainspring, like the movement 3 of the first embodiment. Here, since the mechanism for driving the hour hand 21, the minute hand 22, and the second hand 23 is the same as that in the first embodiment, the same reference numerals are given and the description thereof will be omitted.

The solar wheel 52B is rotatably attached to the outer peripheral portion of the rotating shaft of the cylinder wheel 46, and the lunar wheel 51B is rotatably attached to the outer peripheral portion of the rotating shaft of the solar wheel 52B. The Sakubo car 240 is rotatably attached to the vehicle.
The solar wheel 52B includes a shaft portion 521B and a gear 522B. The shaft portion 521B is formed in a cylindrical shape and is rotatably supported by a cylinder wheel 46 arranged inside the shaft portion 521B. The gear 522B is continuously formed at the end of the shaft portion 521B on the main plate 11 side and meshes with the solar intermediate gear 64B described later.
A sun needle 26 is attached to the shaft portion 521B of the sun wheel 52B.

The lunar wheel 51B includes a shaft portion 511B and a gear 512B. The shaft portion 511B is formed in a cylindrical shape and is rotatably supported by the shaft portion 521B of the solar wheel 52B arranged inside the shaft portion 511B. Further, the outer peripheral surface of the shaft portion 511B rotatably supports the Syzygy vehicle 240. Further, a square hole formed in the lunar plate 230 is inserted into the end portion of the shaft portion 511B on the cover glass side so that the lunar wheel 51B and the lunar plate 230 can rotate integrally.
Further, the outer peripheral edge of the moon plate 230 overlaps the inner peripheral edge along the opening 211 of the fixed dial 210 in a plan view seen from a direction perpendicular to the moon plate 230, and is closer to the main plate 11 than the fixed dial 210. The movement of the lunar plate 230 located on the cover glass side is restricted by the fixed dial 210. A syzygy plate 241 is fixed to the syzygy vehicle 240.

The lunar wheel 51B and the solar wheel 52B are rotated by the solar moon intermediate wheel 60B that transmits the rotation of the cylinder wheel 46. The sun moon intermediate vehicle 60B includes a true 61B, a cylinder intermediate gear 62B, a moon intermediate gear 63B, and a sun intermediate gear 64B, similarly to the solar moon intermediate vehicle 60 of the first embodiment. However, since the positional relationship between the lunar wheel 51B and the sun wheel 52B is opposite to that of the first embodiment, the positions of the lunar intermediate gear 63B and the solar intermediate gear 64B are also opposite. That is, the solar lunar intermediate wheel 60B is arranged so as to overlap the tubular intermediate gear 62B, the solar intermediate gear 64B, and the lunar intermediate gear 63B in this order from the main plate 11 side. The gear ratio of the solar moon intermediate wheel 60B to the moon wheel 51B, the solar wheel 52B, and the cylinder wheel 46 is the same as that of the first embodiment.
The lunar intermediate gear 63B is slip-fitted into the solar intermediate gear 64B, and a correction mechanism for correcting the positions of the lunar wheel 51B and the lunar plate 230 by pulling out the winding stem 71 to the first stage and operating it. 70 is provided. As shown in FIG. 10, the correction mechanism 70 is the same as that of the first embodiment, and therefore the same reference numerals are given and the description thereof will be omitted.

The movement 3B includes a sought-off feed wheel 90 that rotates the sought-after plate 241 in conjunction with the phase difference between the moon wheel 51B and the sun wheel 52B.
As shown in FIG. 9, the Syzygy carrier 90 includes the Syzygy Sun Shin 91, the Syzygy Planet Intermediate Gear 92, the Syzygy Second Sun Gear 93, the Syzygy Second Sun Kana 94, the Syzygy Planet 95, and the Syzygy Sun. It includes a gear 96, a Syzygy feed gear 97, a Syzygy feed wheel seat 98, and a Syzygy feed wheel receiving plate 99. Therefore, the Sakubo feeder 90 is a planetary gear mechanism.

The Syzygy Sun Shin 91 is rotatably supported in a hole in the main plate 11.
The Sakubo planet intermediate gear 92 is rotatably supported by the Sakubo Sun Shin 91 and meshes with the solar wheel 52B. The solar wheel 52B and the Sakubo planet intermediate gear 92 are gears having the same tooth shape, and both have 59 teeth.
The Syzygy second sun gear 93 is rotatably supported by the Syzygy sun Shin 91 via the Syzygy second sun kana 94, meshes with the moon wheel 51B, and has the same tooth profile as the moon wheel 51B. Both the lunar wheel 51B and the Syzygy second sun gear 93 have 85 teeth.
The Syzygy Second Sun Kana 94 is press-fitted into the Syzygy Second Sun Gear 93. The number of teeth of Syzygy Second Sun Kana 94 is 16.

The Sakubo planetary vehicle 95 is inserted into a pin 921 erected on the Sakubo planet intermediate gear 92 and is rotatably supported by a shaft. The Syzygy planetary vehicle 95 includes a Syzygy planetary kana 951 that meshes with the Syzygy second sun kana 94 and a Syzygy planetary gear 952 that meshes with the Syzygy sun gear 96.
The Syzygy planetary gear 951 has 12 teeth, and the Syzygy planetary gear 952 has 15 teeth.

The Syzygy sun gear 96 is fixed to the Syzygy sun true 91 and rotates integrally with the Syzygy sun true 91. The number of teeth of the Syzygy sun gear 96 is 15.
The Syzygy feed gear 97 is press-fitted into the Syzygy Sun Shin 91 and meshes with the Syzygy wheel 240 to which the Syzygy plate 241 is fixed. The tooth profile of the Syzygy feed gear 97 and the Syzygy wheel 240 is the same as that of the solar wheel 52B, and the number of teeth is 59, which is the same number.
The Syzygy feed wheel seat 98 is press-fitted into the Syzygy Sun Shin 91. As a result, the Syzygy planetary intermediate gear 92, the Syzygy second sun gear 93, the Syzygy second sun kana 94, the Syzygy planetary vehicle 95, and the Syzygy sun are arranged between the flange of the Syzygy sun Shin 91 and the Syzygy carrier seat 98. The axial movement of the gear 96 is restricted, and the Syzygy feeder 90 can be unitized.

The Sakubo feeder receiving plate 99 is sandwiched between the Sakubo second sun gear 93 and the Sakubo feed gear 97 in a state of play in both the axial direction and the axially orthogonal direction of the Sakubo sun true 91. The Syzygy feeding wheel receiving plate 99 is fixed to the main plate 11 with screws (not shown), and the Syzygy feeding wheel 90 is fixed in a state of play in the axial direction of the Syzygy Sun Shin 91.
The Syzygy feed truck receiving plate 99 is arranged between the lunar wheel 51B and the Syzygy wheel 240, and as shown in FIG. 10, covers the top of the solar moon intermediate wheel 60B, and the lunar intermediate gear 63B and the Syzygy No. The two sun gears 93 and the Syzygy wheel 240 are prevented from meshing in cross section.

[Explanation of operation]
As shown in FIG. 11, when the lunar wheel 51B, that is, the lunar plate 230 rotates 360 degrees counterclockwise with respect to the sun wheel 52B, the syzygy wheel 240, that is, the syzygy board 241 is 85/85 × 16 from the above-mentioned gear ratio. / 12 × 15 × 15 × 59/59 = 4/3, and rotate 480 degrees counterclockwise.
On the contrary, when the solar car 52B rotates 360 degrees clockwise with respect to the moon car 51B, the Syzygy car 240 is 59/59 x (1-15 / 15 x 16/12) x 59/59 = -1/3. And rotate 120 degrees counterclockwise.
Since the Syzygy feeder 90 is set so that the relative rotation between the lunar plate 230 and the Syzygy vehicle 240 is as described above, the round hole 231 of the lunar plate 230 is aligned with the 12 o'clock position at the age of 0. If the sun hand 26 is attached at the 12 o'clock position in that state, the shape of the moon can be set according to the phase difference between the moon and the sun. Therefore, after adjusting the time, the user only needs to adjust the position of the sun hand 26 to the current number of the moon age, and unless the moon age display clock 1B is stopped, there is no need to correct the moon age for about 1000 years, and the moon age display is assumed. Even if the clock 1B is stopped, it can be corrected by the winding stem 71, so it is easy to adjust the age next time.
In FIG. 11, when the indicator 261 of the sun hand 26 is at the 12 o'clock position, the eclipse of the moon due to the relative rotation of the moon plate 230 and the syzygy plate 241 is described as display states 301 to 313. The display state 301 is the new moon, the display state 304 is the first quarter moon, the display state 307 is the full moon, the display state 310 is the last quarter moon, and the display state 313 is the new moon. The other display states indicate the age of the moon in the middle. By moving the lunar plate 230 and the syzygy plate 241 in this way, it is possible to realize a display according to the shape of the moon.

[Effect of the second embodiment]
The moon age display clock 1B of the second embodiment can also exert the same effects as those of the first embodiment.
That is, since the sun moon intermediate wheel 60B having the same gear ratio as the sun moon intermediate wheel 60 of the first embodiment is provided, when the sun wheel 52 and the sun needle 26 that rotate once in one day rotate M day = 29.53059, The lunar wheel 51 and the lunar plate 230 can be set to be delayed by almost one rotation. As a result, the moon age number 232 of the moon plate 230 can be instructed by the sun needle 26 to accurately indicate the age of the moon, and the first embodiment is provided with the moon wheel 51B, the sun wheel 52B, and the sun moon intermediate wheel 60B. The same effect can be achieved.

Further, a Syzygy feed wheel 90 is provided, a Syzygy plate 241 that rotates with a phase difference between the moon wheel 51B and the solar wheel 52B is provided, and the bright region 242 and the dark region 243 of the Syzygy plate 241 and the round hole 231 of the moon plate 230 Therefore, since it is possible to realize a display that imitates the fullness of the actual moon, the user can intuitively grasp the age of the moon and improve convenience.
In particular, since the round hole 231 of the lunar wheel 51B also indicates the position of the moon, the position of the moon and the eclipse can be indicated at the same time, so that convenience can be improved.

Since the Sakubo feeder 90 uses a planetary gear mechanism, it can be made compact with a relatively simple configuration. Therefore, it can be easily incorporated into the age display clock 1B used as a wristwatch.

[Other Embodiments]
The present invention is not limited to the above embodiment.
For example, the solar lunar intermediate wheels 60 and 60B are configured by integrally assembling the tubular intermediate gears 62 and 62B, the lunar intermediate gears 63 and 63B, and the solar intermediate gears 64 and 64B, but they may be configured by two bodies. .. For example, two intermediate vehicles may be provided: an intermediate vehicle that rotates the cylinder wheel 46 and the moon wheel 51 in conjunction with each other, and an intermediate vehicle that rotates the cylinder wheel 46 and the solar wheel 52 in conjunction with each other. Further, two intermediate vehicles may be provided, one is an intermediate vehicle that rotates the cylinder wheel 46 and the moon wheel 51 or the solar wheel 52 in conjunction with each other, and the other is an intermediate vehicle that rotates the moon wheel 51 and the sun wheel 52 in conjunction with each other. ..

In the first embodiment, the moon mark 222 that imitates the shape of the moon and the moon age mark 223 that represents the moon age are described as the moon age notation, but either one may be used.
In the second embodiment, the indication of the age of the moon by the sun needle 26 and the indication of the moon's peaks and falls by the round hole 231 and the syzygy plate 241 are used in combination, but only one of them may be provided.
That is, it is provided with a moon plate 230 provided with a moon age number 232, which is a moon age notation portion, and a sun needle 26 provided with an indicator portion 261 which is a moon age indicator portion, and is not provided with a round hole 231 or a clock plate 241. It may be a moon age display clock that does not have a display of the age of the moon.
Further, a moon plate 230 provided with only a round hole 231 and a clock plate 241 are provided, and a number indicating the age of the moon indicated by the sun hand 26 or the sun hand 26 is not provided, that is, the age of the moon is indicated only by displaying the fullness of the moon. It may be a moon age display clock to be displayed.

The bright region 242 and the dark region 243 of the Syzygy plate 241 are not limited to those divided into three at 120 ° intervals, and each can be divided into four or more. In this case, the number of teeth of the Sakubo planetary vehicle 95 of the Sakubo feeder 90 may be appropriately set according to the number of divisions.
In each of the above embodiments, the cycle of the lunar month is set to M = 29.53059, but for example, it may be set to a value such as M = 29 or M = 29.53. That is, it is preferable to set M = 29.5305 because the accuracy is improved, but M may be an approximate value having a small number of effective digits, and may be a value that can be set as the period of the lunar month.

1, 1B ... Moon age display clock, 2, 2B ... Display, 3, 3B ... Movement, 4 ... Case, 5 ... Crown, 11 ... Base plate, 20, 20B ... Dial, 21 ... Hour hand, 22 ... Minute hand, 23 ... second hand, 25 ... moon hand, 26 ... sun hand, 41 ... 2nd gear, 42 ... 4th gear, 43 ... day back gear, 45 ... tube kana, 46 ... cylinder wheel, 51, 51B ... moon wheel, 52 , 52B ... solar wheel, 60, 60B ... solar moon intermediate car, 61, 61B ... true, 62, 62B ... cylinder intermediate gear, 63, 63B ... moon intermediate gear, 64, 64B ... solar intermediate gear, 70 ... correction mechanism, 71 ... Makishin, 72 ... Kichi car, 73 ... Tsuzumi car, 74 ... Oshidori, 75 ... Kannuki, 76 ... Kannuki presser, 77 ... Kotetsu lever, 78 ... Kotetsu car, 79 ... Round hole car, 80 ... Moon car correction Wheel train, 81 ... Moon age correction report car, 82 ... Moon age correction report car, 82 ... 1st month age correction report car, 83 ... 2nd month age correction report car, 84 ... 3rd month age correction report car, 85 ... 4th month age correction report Car, 86 ... 5th month age correction transmission car, 90 ... Sakubo sun true, 92 ... Sakubo planet intermediate gear, 93 ... Sakubo second sun gear, 94 ... Sakubo second sun, 95 ... Sakubo planet Car, 96 ... Sakubo sun gear, 97 ... Sakubo feed gear, 98 ... Sakubo feed wheel seat, 99 ... Sakubo feed wheel receiving plate, 210, 210B ... Fixed dial, 211 ... Opening, 215, 215A, 215B ... Index, 216B ... Orientation mark, 220 ... sun plate, 221 ... sun mark, 222 ... moon mark, 223 ... moon age mark, 223A ... moon age number, 223B ... dot, 230 ... moon plate, 231 ... round hole, 232 ... number, 240 ... , 241 ... Sakubo board, 242 ... bright area, 242A ... first bright area, 242B ... second bright area, 242C ... third bright area, 243 ... dark area, 243A ... first dark area, 243B ... second dark area , 243C ... Third dark area, 251, 261 ... Indicator, 421 ... Shaft, 461 ... Kana, 511 ... Shaft, 511B ... Shaft, 512, 512B ... Gear, 513 ... Kana, 521, 521B ... Shaft, 522, 522B ... Gear, 921 ... Pin, 951 ... Sakubo Planet Kana, 952 ... Sakubo Planet Gear.

Claims (9)

The first member that rotates once a day,
When the second member rotates coaxially with the first member and the lunar month cycle is M days, the second member rotates M-1 on the M days.
A moon age notation portion provided on either the first member or the second member to indicate the age of the moon,
A moon age display clock comprising a moon age indicator portion provided on the first member or the other of the second member to indicate the moon age notation portion. In the age display clock according to claim 1,
The lunar age notation part indicates the lunar age in the form of a lunar age number or the moon.
The moon age display clock is characterized in that the moon age indicator unit displays the moon age by instructing the number of the moon age or the shape of the moon. In the age display clock according to claim 1 or 2.
The first member is a disk-shaped sun plate, and is
The second member is a pointer-shaped moon hand.
The moon age notation portion is provided on the sun plate and is provided.
The moon age indicator is a moon age display clock provided on the moon hand. In the age display clock according to claim 1 or 2.
The first member is a pointer-shaped sun needle.
The second member is a disk-shaped lupus plate.
The moon age notation part is provided on the moon plate and is provided.
The moon age indicator is a moon age display clock provided on the sun hand. In the age display clock according to claim 4,
A syzygy plate provided on the opposite side of the moon plate from the sun needle,
It has a planetary gear mechanism that drives the sword plate in conjunction with the rotation of the sun needle and also drives in conjunction with the rotation of the moon plate.
The lunar plate has a circular opening and
The moon age is characterized by having a bright region and a dark region that can be seen from the opening as the sun needle and the lunar plate rotate in a plan view viewed from a direction perpendicular to the lunar plate. Display clock. In the age display clock according to any one of claims 1 to 5.
With the first vehicle in which the first member is fixed, one rotation is performed in one day, and the first gear is provided.
A second vehicle in which the second member is fixed, rotates M-1 in the M days, and has a second gear.
An intermediate wheel having a first intermediate gear that meshes with the first gear and a second intermediate gear that meshes with the second gear is provided.
When the number of teeth of the first gear is a, the number of teeth of the second gear is d, the number of teeth of the first intermediate gear is c, and the number of teeth of the second intermediate gear is b.
A moon age display clock characterized in that a = 59, b = 103, c = 74, and d = 85. In the moon age display clock according to any one of claims 1 to 6.
With the hour hand
The cylinder wheel that fixes the hour hand and
A second vehicle in which the second member is fixed, rotates M-1 in the M days, and has a second gear.
An intermediate wheel having a tubular intermediate gear that meshes with the tubular wheel and a second intermediate gear that meshes with the second gear is provided.
When the number of teeth of the cylinder wheel is e, the number of teeth of the cylinder intermediate gear is f, the number of teeth of the second intermediate gear is g, and the number of teeth of the second gear is h.
A moon age display clock characterized in that e = 59, f = 148, g = 103, and h = 85. In the age display clock according to any one of claims 1 to 7.
The moon age display clock, wherein M is 29.53059. A solar car that makes one revolution in a day,
Assuming that the lunar month cycle is M days, the lunar car that rotates M-1 on the M days and
A lunar plate that is fixed to the lunar wheel and is formed in a disk shape and has a circular opening.
A syzygy car that rotates coaxially with the moon car,
A syzygy plate fixed to the syzygy wheel and having a bright region and a dark region visible from the opening of the lunar plate.
A planetary gear mechanism having a desire feed gear that is driven in conjunction with the rotation of the sun wheel and is driven in conjunction with the rotation of the moon wheel to rotate the desire wheel.
A moon age display clock characterized by being equipped with.

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