Information display mechanism, movement and watch

Abstract

Even in a narrow region, information can be continuously, stably, and efficiently displayed with good visual recognition, and the load applied to the mechanism can be reduced, further pursuing miniaturization and thinness. An information display mechanism (12) is provided with: a first display portion (70) rotatable about a first axis (O1); a first power portion (90) that transmits power to the first display portion; a second display portion (80) rotatable about a second axis (O2) arranged so as to be different from the first axis; a second power portion (91) that transmits power to the second display portion; and a rotation control portion (95) that controls rotation of the first display portion and the second display portion so that the first display portion and the second display portion each rotate at a predetermined period, the first display portion and the second display portion cooperatively displaying information based on a change in the relative position of the rotational position of the first display portion centered on the first axis and the rotational position of the second display portion centered on the second axis.

Description

TECHNICAL FIELD

[0001] The present application relates to an information display mechanism, a movement, and a timepiece. BACKGROUND

[0002] Conventionally, as a timepiece that displays information other than time, a timepiece provided with a moon phase display mechanism that displays a moon phase has been known. Such a moon phase display mechanism is a mechanism that displays a state of a moon that repeats waxing and waning with a certain period in association with time change, and the display method has been studied conventionally.

[0003] Further, the "moon phase" is a value that becomes a reference for knowing a state of waxing and waning of the moon, and is known as a value that indicates days elapsed from a new moon as "moon phase 0". Generally, the moon repeats waxing and waning with a period of about 29.5 days, and a full moon is indicated as about "moon phase 14.8".

[0004] In Patent Literature 1 described below, a timepiece with a moon phase display is disclosed, which has a dial formed with a moon phase display window and a moon plate that displays two moon figures (a full moon), and the moon plate is rotated in association with time change, so that the moon figures can be displayed in a manner of repeating waxing and waning through the moon phase display window.

[0005] Further, in Patent Literature 2 described below, a moon phase display mechanism is disclosed, which has a moon phase display portion that is observed in plan view in a fan shape and that displays a change in waxing and waning of the moon in stages, and a moon hand that swings in association with time change, so as to indicate the moon phase display portion.

[0006] Further, in Patent Literature 3 described below, a moon phase display mechanism is disclosed, which has a dial formed with a moon phase display window observed in plan view in a circular arc shape, and a first moon plate and a second moon plate formed in different colors, and the first moon plate and the second moon plate swing in the moon phase display window in opposite directions to each other in association with time change.

[0007] Further, the first moon plate and the second moon plate can be overlapped in a thickness direction of the timepiece, and the waxing and waning of the moon can be displayed by a change in overlapping of the first moon plate and the second moon plate.

[0008] Further, in Patent Literature 4 described below, a moon phase display mechanism is disclosed, which has a sphere that imitates a moon, and the sphere is rotated in association with time change.

[0009] PRIOR ART DOCUMENTS

[0010] PATENT LITERATURE

[0011] Patent Literature 1: Japanese Patent No. 2635554;

[0012] Patent Literature 2: European Patent Application Publication No. 1321832;

[0013] Patent Literature 3: European Patent No. 1692574

[0014] Patent Literature 4: European Patent No. 2687918 SUMMARY

[0015] PROBLEMS TO BE SOLVED BY THE INVENTION

[0016] However, in the timepiece with the age display described in Patent Literature 1, the moon phase disc displays two moon charts at an interval of 180 degrees, and thus the moon charts occupy a large area in the moon phase disc. Therefore, in the case of displaying a moon chart having a diameter of, for example, 4 mm, the moon phase disc becomes at least 10 mm in diameter, and it is difficult to display the age in a narrow area (information display).

[0017] Further, in the case of displaying the vicinity of the new moon, a situation in which both of the moon charts appear in the age display window at the same time is assumed to occur, and it is difficult to visually distinguish the difference in the age. Therefore, there is room for improvement in stably displaying the age (information display).

[0018] In the age display mechanism described in Patent Literature 2, the configuration is such that the age display cannot be reversed, and thus it is difficult to manipulate, and further, the configuration is such that the moon hand moves from the end point to the start point instantaneously at the time of the end of the moon phase, and thus it is a mechanism in which the load on the age display mechanism is large.

[0019] In the age display mechanism described in Patent Literature 3, the first moon phase disc and the second moon phase disc do not overlap in half of the total movement amount of the first moon phase disc and the second moon phase disc, and thus there are many useless movements that do not contribute to the age display. Therefore, there is room for improvement in continuously and efficiently displaying the age (information display).

[0020] Further, in the age display mechanism described in Patent Literature 4, a sphere that imitates the moon is used, and thus the thickness increases, and it is difficult to achieve miniaturization and thinness.

[0021] The present application has been made in view of such circumstances, and aims to provide an information display mechanism, a movement, and a timepiece in which information can be continuously and stably displayed with good visual recognition even in a narrow area, and further, the load applied to the mechanism can be reduced, and miniaturization and thinness can be further achieved.

[0022] MEANS FOR SOLVING THE PROBLEMS

[0023] (1) The information display mechanism according to the present application is characterized by comprising: a first display portion that is rotatable about a first axis; a first power portion that transmits power to the first display portion; a second display portion that is rotatable about a second axis arranged so as to be different from the first axis; a second power portion that transmits power to the second display portion; and a rotation control portion that controls rotation of the first display portion and the second display portion so that the first display portion and the second display portion each rotate at a predetermined period, the first display portion and the second display portion cooperatively displaying information based on a change in relative position of a rotation position of the first display portion centered on the first axis and a rotation position of the second display portion centered on the second axis.

[0024] According to the information display mechanism according to the present application, the rotation of the first display portion and the second display portion can be controlled by the rotation control portion, and at the same time, the first display portion can be rotated about the first axis at a predetermined period using power from the first power portion, and the second display portion can be rotated about the second axis at a predetermined period using power from the second power portion. At this time, the first axis and the second axis are different axes, so the first display portion and the second display portion can each move independently in a state of being separated in a planar direction. Thus, the relative position of the rotation position of the first display portion centered on the first axis and the rotation position of the second display portion centered on the second axis can change at all times, and information can be cooperatively displayed based on the change in relative position of the first display portion and the second display portion.

[0025] Thus, information is displayed using the change in relative position of the two display portions (the first display portion and the second display portion), so even in a narrow area, information can be displayed with good visual recognition. Furthermore, the relative position of the two display portions (the first display portion and the second display portion) can change at all times, so there is no movement that is not useful for displaying information, and information can be continuously, stably, and efficiently displayed. Furthermore, the first display portion and the second display portion can be reversed, and no movement such as instantaneous movement as in the past is required, so the load applied to the mechanism can be reduced. Furthermore, no component having a thickness like a ball as in the past is required, so miniaturization and thinness can be sought.

[0026] (2) The first display portion and the second display portion can be arranged so as to be different in height position in a thickness direction of a base plate, the rotation control portion can rotate the first display portion and the second display portion so as to coincide in the thickness direction of the base plate, and the first display portion and the second display portion can display the information based on a change in relative position in a plan view observed from the thickness direction of the base plate.

[0027] In this case, the first display portion and the second display portion can be caused to rotate so as to coincide in the thickness direction of the bottom plate, and thus information can be displayed based on a change in relative position in a top view (viewpoint) observed in the thickness direction of the bottom plate, that is, a change in the superimposition of the first display portion and the second display portion. Thus, the change in the relative position of the first display portion and the second display portion can be visually recognized clearly, and information can be displayed with good visual recognition.

[0028] Further, the first display portion and the second display portion can be caused to coincide, and thus information can be displayed efficiently in a narrower area, and the area required for information display can be reduced. Therefore, the information display mechanism can be easily applied to various devices and the like.

[0029] (3) The rotation control portion can rotate the first display portion and the second display portion in a manner including at least the following: a hidden state in which the entire first display portion is hidden from the back side of the second display portion, and a revealed state in which the entire first display portion is revealed from the back side of the second display portion, when viewed in the thickness direction of the bottom plate.

[0030] In this case, when information is displayed based on a change in the superimposition of the first display portion and the second display portion, the entire first display portion can be hidden from the back side of the second display portion in the hidden state, and the entire first display portion can be revealed from the back side of the second display portion in the revealed state, and thus at least two patterns that differ greatly can be displayed clearly and easily.

[0031] (4) The rotation control portion can include: a rotating body that rotates in correspondence with a change in time; a first rotation control portion that rotationally controls the first display portion so as to reciprocate within a predetermined rotation angle range centered on the first axis in conjunction with the rotation of the rotating body; and a second rotation control portion that rotationally controls the second display portion so as to reciprocate within a predetermined rotation angle range centered on the second axis in conjunction with the rotation of the rotating body.

[0032] In this case, the first rotation control portion and the second rotation control portion rotationally control the first display portion and the second display portion, respectively, in conjunction with the rotation of the rotating body that rotates in correspondence with a change in time, and thus information can be displayed in a state associated with a change in time. Therefore, information other than the time, such as the month, the day of the week, the date, and the like, can be displayed.

[0033] Further, the first display portion and the second display portion can be rotationally controlled so as to reciprocate (swing), and thus the first display portion and the second display portion can be caused to move continuously and display information correctly at the same time even in a further narrow area.

[0034] (5) The first rotation control section can include a first cam that rotates in conjunction with rotation of the rotating body and a first control lever that swings in response to rotation of the first cam to control rotation of the first display section, and the second rotation control section can include a second cam that rotates in conjunction with rotation of the rotating body and a second control lever that swings in response to rotation of the second cam to control rotation of the second display section.

[0035] In this case, the first cam and the second cam can be caused to rotate simultaneously in conjunction with rotation of the rotating body by the rotating body rotating in correspondence with a change in time. Thus, the first control lever can be caused to swing in response to rotation of the first cam, and the first display section can be caused to rotate appropriately back and forth by the swinging of the first control lever. Similarly, the second control lever can be caused to swing in response to rotation of the second cam, and the second display section can be caused to rotate appropriately back and forth by the swinging of the second control lever.

[0036] In particular, the first display section and the second display section can be caused to rotate back and forth in association with a change in time with a simple configuration using only the first cam and the second cam, and thus reliability of operation and simplification of the configuration can be sought.

[0037] (6) The rotating body, the first cam, and the second cam can be disposed on a common axis.

[0038] In this case, the rotating body, the first cam, and the second cam can be disposed on a common axis, and thus the entire mechanism can be disposed compactly in a planar direction.

[0039] (7) The rotating body can be a month wheel that rotates one revolution in a month cycle, the first rotation control section can control rotation so that the first display section rotates back and forth once in correspondence with one revolution of the rotating body, the second rotation control section can control rotation so that the second display section rotates back and forth once in a different phase from the first display section in correspondence with one revolution of the rotating body, and the first display section and the second display section can display the month as a change in relative position corresponding to the phase difference.

[0040] In this case, the rotation body as the moon age wheel can be slowly rotated in correspondence with the time change, and the rotation body can be rotated within the waxing and waning period (about 29.5 days) of the moon. In addition, the first display portion can be rotated in a reciprocating manner once, and the second display portion can be reciprocated once in a different phase from the first display portion in correspondence with the waxing and waning period of the moon. Thus, the first display portion and the second display portion can be rotated in different phases in correspondence with the waxing and waning period of the moon, and the moon age as information can be displayed based on the change in the relative position corresponding to the phase difference, that is, the change in the superposition situation of the first display portion and the second display portion.

[0041] That is, the superposition situation of the two display portions (the first display portion and the second display portion) can be changed every moment within the waxing and waning period (about 29.5 days) of the moon, and the moon age can be grasped at a glance.

[0042] (8) The first display portion can be a moon plate imitating the moon as viewed from above and having a circular shape, the second display portion can be a shadow plate as viewed from above and having a circular shape and being darker in color than the first display portion, and the first display portion and the second display portion can display the moon age as the information.

[0043] In this case, the first display portion is the moon plate, and the second display portion is the dark shadow plate, and thus the moon age such as the new moon (moon age 0), the full moon (moon age 14.8), the first quarter (moon age 7.4), and the last quarter (moon age 22.1) can be clearly grasped at a glance in accordance with the change in the superposition situation of the moon plate and the shadow plate.

[0044] (9) The moon age correction mechanism that forcibly rotates the rotation body and corrects the relative positional relationship of the first display portion and the second display portion can be provided.

[0045] In this case, the rotation body as the moon age wheel can be forcibly rotated by the moon age correction mechanism, and the moon age correction can be performed by correcting the relative positional relationship of the first display portion and the second display portion.

[0046] (10) Also, the aforementioned month correction mechanism can include: a month correction lever disposed adjacent to the aforementioned rotating body, capable of swinging about a swing axis between a standby position and a correction position; a lever spring biasing the aforementioned month correction lever toward the aforementioned standby position; and a correction pawl swingably provided to the aforementioned month correction lever, which feeds the aforementioned rotating body in a direction by a predetermined rotation amount when the aforementioned month correction lever is in the aforementioned correction position, wherein the aforementioned month correction lever is provided with a pawl return spring that allows the aforementioned correction pawl to move away from the aforementioned rotating body when the aforementioned month correction lever is returned from the aforementioned correction position to the aforementioned standby position, and returns to a position in which the aforementioned correction pawl is biased by the aforementioned pawl return spring and performs the aforementioned feed rotation when the aforementioned month correction lever is returned to a position in which the aforementioned correction pawl is separated from the aforementioned rotating body.

[0047] In this case, when the month is corrected, if the month correction lever is swung about the swing axis from the standby position toward the correction position against the biasing force of the lever spring, and the month correction lever is moved to the correction position, the correction pawl feeds the rotating body in a direction by a predetermined rotation amount. Thus, the rotation position of the rotating body as the month wheel can be corrected, and the superimposition of the first display portion and the second display portion can be corrected to reliably perform the month correction.

[0048] In addition, if the swing of the month correction lever is released, the month correction lever can be returned from the correction position to the standby position by the biasing force of the lever spring. At this time, the correction pawl can be moved away from the rotating body against the biasing force of the pawl return spring, and thus the correction pawl can be prevented from reversing the rotating body toward the position before correction when the month correction lever is returned to the standby position. Therefore, the corrected month can be maintained.

[0049] Further, if the month is returned to a position in which the correction pawl of the month correction lever is separated from the rotating body, the correction pawl is returned to a position in which the feed rotation is performed by the biasing force from the pawl return spring, and thus the next month correction can be prepared.

[0050] (11) The movement according to the present application is characterized by comprising the aforementioned information display mechanism.

[0051] (12) The timepiece according to the present application is characterized by comprising the aforementioned movement.

[0052] In this case, the aforementioned information display mechanism is provided, and thus information other than the time can be continuously, stably, and efficiently displayed with good visual recognition, and a high-quality and high-performance movement and timepiece with improved functionality can be provided.

[0053] Effects of the Invention

[0054] According to the present application, even in a narrow region, information can be continuously, stably, and efficiently displayed with good visual recognition, and the load applied to the mechanism can be reduced, and further miniaturization and thinning can be pursued. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a plan view of a timepiece showing an embodiment to which the present application is applied.

[0056] Figure 2 is a plan view of a movement shown in Figure 1 which the main glass, the dial, and the like have been removed.

[0057] Figure 3 is a plan view of a movement shown in Figure 2 which the hands have been removed.

[0058] Figure 4 is a perspective view of a movement shown in Figure 2 .

[0059] Figure 5 is a plan view of a movement shown in Figure 3 which the moon plate, the shadow plate, the base plate, and the backside article pusher, and the like have been removed.

[0060] Figure 6 is a perspective view of a movement shown in Figure 3 which the moon plate, the shadow plate, and the backside article pusher, and the like have been removed.

[0061] Figure 7 is a longitudinal sectional view of a movement shown in Figure 4 which is a longitudinal sectional view of the periphery of the hour wheel, the jumper, and the month wheel train.

[0062] Figure 8 is a block diagram of a month display mechanism provided in a movement shown in Figure 4 .

[0063] Figure 9 is a longitudinal sectional view of a movement shown in Figure 4 which is a longitudinal sectional view of the periphery of the moon plate, the moon wheel, and the first power section.

[0064] Figure 10 is a longitudinal sectional view of a movement shown in Figure 4 which is a longitudinal sectional view of the periphery of the shadow plate, the shadow wheel, and the second power section.

[0065] Figure 11 is a plan view showing the relationship between the month cam, the shadow cam, the month wheel, the first power section, the second power section, and the rotation control section in a movement shown in Figure 4 .

[0066] Figure 12 isFigure 11 A three-dimensional view of the periphery of the first power unit is shown.

[0067] Figure 13 It shows from Figure 12 The image shown is a 3D view of the state where the monthly reset gear has been disassembled.

[0068] Figure 14 It shows from Figure 13 The image shown is a perspective view of the state after the connecting gears have been disassembled.

[0069] Figure 15 yes Figure 4 The longitudinal section of the movement shown is a longitudinal section of the periphery of the moonwheel and moonwheel train.

[0070] Figure 16 It is shown Figure 4 A top view showing the relationship between the moon phase wheel and the moon phase wheel train in the movement.

[0071] Figure 17 yes Figure 4 A three-dimensional view of the perimeter of the age correction mechanism shown.

[0072] Figure 18 yes Figure 4 The longitudinal section of the movement shown is a longitudinal section of the periphery of the age correction mechanism.

[0073] Figure 19 It is shown Figure 17 A top view showing the relationship between the age correction rod and the age wheel in the age correction mechanism.

[0074] Figure 20 It shows that Figure 19 The top view shows the state of the age adjustment lever as it moves from the standby position toward the adjustment position.

[0075] Figure 21 It shows that Figure 20 The top view shows the state where the age correction lever has been moved to the correction position and the age wheel feed has been rotated.

[0076] Figure 22 It is shown Figure 4 The diagram shows a top view of the moon plate and shadow plate working together to display the "lunar age 0" status.

[0077] Figure 23 It is shown in Figure 22 A top view showing the relationship between the moon cam and shadow cam and the moon return needle rod and shadow return needle rod in the indicated state.

[0078] Figure 24 It shows from Figure 22The state shown is a top view of the "3.7 months" status, displayed in collaboration between the meniscus and the shadow plate.

[0079] Figure 25 It is shown in Figure 24 A top view showing the relationship between the moon cam and shadow cam and the moon return needle rod and shadow return needle rod in the indicated state.

[0080] Figure 26 It shows from Figure 24 The state shown is a top view of the "7.4 months" status, displayed in collaboration between the meniscus and the shadow plate.

[0081] Figure 27 It is shown in Figure 26 A top view showing the relationship between the moon cam and shadow cam and the moon return needle rod and shadow return needle rod in the indicated state.

[0082] Figure 28 It shows from Figure 26 The state shown is a top view of the "11.1 months" status, displayed in collaboration between the meniscus and the shadow plate.

[0083] Figure 29 It is shown in Figure 28 A top view showing the relationship between the moon cam and shadow cam and the moon return needle rod and shadow return needle rod in the indicated state.

[0084] Figure 30 It shows from Figure 28 The state shown is a top view of the "14.8 months old" state, displayed in collaboration between the meniscus and the shadow plate.

[0085] Figure 31 It is shown in Figure 30 A top view showing the relationship between the moon cam and shadow cam and the moon return needle rod and shadow return needle rod in the indicated state.

[0086] Figure 32 It shows from Figure 30 The state shown is a top view of the "18.5 months old" state, displayed in collaboration between the menstrual plate and the shadow plate.

[0087] Figure 33 It is shown in Figure 32 A top view showing the relationship between the moon cam and shadow cam and the moon return needle rod and shadow return needle rod in the indicated state.

[0088] Figure 34 It shows from Figure 32 The state shown is a top view of the "22.1 months" status, displayed in collaboration between the meniscus and the shadow plate.

[0089] Figure 35 It is shown in Figure 34 A top view showing the relationship between the moon cam and shadow cam and the moon return needle rod and shadow return needle rod in the indicated state.

[0090] Figure 36 is a plan view showing a state in which the moon cam and the shadow cam are in the state shown in Figure 34

[0091] Figure 37 is a plan view showing the relationship between the moon cam and the shadow cam and the moon return pin and the shadow return pin in the state shown in Figure 36

[0092] Figure 38 is a block diagram showing a modification example of the moon age display mechanism. DETAILED DESCRIPTION

[0093] Hereinafter, an embodiment to which the present application pertains will be described with reference to the drawings.

[0094] Further, in the present embodiment, as one example of a timepiece, a mechanical timepiece is exemplified which is a double hour and minute hand structure in which the hour hand and the minute hand are disposed at positions eccentric from the center of a movement and which does not have a second hand.

[0095] Further, in each drawing of the present embodiment, in order to make the drawing easy to observe, a part of the illustration of the timepiece component is sometimes omitted, and each timepiece component is sometimes simplified and illustrated.

[0096] In general, a mechanism body including a driving portion of a timepiece is referred to as a "movement". A state in which a dial and a hand are mounted to the movement and put into a timepiece case to become a finished product is referred to as a "finished product" of the timepiece. One side of a base plate of a substrate on which a glass of the timepiece case exists (i.e., one side on which the dial exists) among both sides of the base plate is referred to as a "back side" of the movement. In addition, one side of the base plate on which a case back of the timepiece case exists (i.e., one side opposite to the dial) among both sides of the base plate is referred to as a "front side" of the movement.

[0097] In the present embodiment, a direction from the side of the case back (front side) toward the dial is taken as an upper side, and the opposite side thereof is taken as a lower side. Thus, a thickness direction of the base plate becomes a vertical direction. Furthermore, in the present embodiment, a direction in which a clockwise rotation is observed from above is taken as a clockwise direction, and a direction in which a counterclockwise rotation is observed from above is taken as a counterclockwise direction, with each axis as a center.

[0098] As shown in Figure 1 and Figure 2 A finished product of the timepiece 1 of the present embodiment has, inside a timepiece case 3 composed of a main glass 2, a back side glass not illustrated, and a case back not illustrated, a movement 10, a dial 4 having a scale or the like showing at least information related to hours, and a hand including an hour hand 5 showing hours and a minute hand 6 showing minutes, as shown in

[0099] ​​The dial 4 has a large opening in its central part with a display window 4a that extends through the dial 4. Thus, the main watch components, including the month display mechanism 12 described later, can be visually identified through the main glass 2 via the display window 4a.

[0100] Therefore, the clock 1 of this embodiment is classified as a high-end clock that combines the pleasure and aesthetics of a mechanical clock that embodies precision horological technology, in addition to its practicality.

[0101] Furthermore, in this embodiment, the hands, including the hour hand 5 and the minute hand 6, are positioned off-center from the center of the movement 10 (specifically, off-center along the "3 o'clock" direction of the dial 4). Therefore, the scale of the dial 4 and the position of the hands are displayed unevenly in the circumferential direction.

[0102] like Figure 2 As shown, the watch case 3 is formed in an annular shape with an annular housing portion 3a surrounding the movement 10. Therefore, the annular housing portion 3a has openings at the top and bottom. A back glass (not shown) overlaps on the lower surface side (face side) of the annular housing portion 3a. The case back is formed in an annular shape corresponding to the annular housing portion 3a, and is assembled to the lower surface of the annular housing portion 3a, sandwiching the back glass.

[0103] Therefore, the main watch parts of the watch 1 in this embodiment can also be visually identified through the back glass.

[0104] like Figure 3 and Figure 4 As shown, the movement 10 has a base plate 11 that forms the base plate of the movement 10. The movement 10 is disposed inside the annular shell portion 3a as previously described.

[0105] like Figures 3-7 As shown, at least the minute pinion 20, a rear wheel train including a cross wheel 30 and an hour wheel 40, a menstrual age display mechanism (the information display mechanism involved in this invention) 12, and a menstrual age correction mechanism 13 are arranged on the back side (i.e., the top side) of the base plate 11. The rear wheel train is axially supported between the rear article pressing member 15 arranged on the back side of the base plate 11 and the base plate 11.

[0106] In addition, a [feature] is provided above the back-side item pusher 15. Figure 1 The dial 4 is shown. A portion of the back-side object pusher 15 is disposed inside the display window 4a and can be visually identified through the main glass 2.

[0107] Between the back-side item pusher 15 and the base plate 11, such as Figure 4 , Figure 6 and Figure 7 The base plate 16 is configured as shown. The base plate 16 is assembled in a state that overlaps with the base plate 11, and a portion of it can be visually identified through the main glass 2 (see reference).Figure 1 The month display mechanism 12 mainly uses this base plate 16 for shaft support.

[0108] On the surface side (i.e., the lower side) of the base plate 11, as shown in Figure 7 , a surface side train is arranged including a second wheel 50 and a barrel wheel 60.

[0109] Further, in the present embodiment, as shown in Figure 1 and Figure 2 , a portion of the base plate 11 on the side opposite the stem 7 sandwiching the hands, i.e., a portion on the "9 o'clock" side of the dial 4, is formed with a through-hole 11a in the base plate 11 that is circular in plan view. Inside the through-hole 11a, a tourbillon 8 is arranged, which has a frame (carriage) that combines a escapement that controls the rotation of the surface side train and a governor that is a governor escapement as one assembly.

[0110] Further, the tourbillon 8 can employ a known structure, and detailed description is omitted. However, the tourbillon 8 is not an essential component, and can not be provided. In this case, for example, on the surface side of the base plate 11, an escapement and a governor can be arranged. Further, the tourbillon 8 can be visually recognized through the front glass 2 and the back glass.

[0111] (Surface side train, back side train)

[0112] The surface side train and the back side train are briefly described.

[0113] As shown in Figure 7 , the surface side train is arranged between a train bridge 17 arranged further downward than the base plate 11 and the base plate 11, and rotates by output torque accompanying the unwinding of a mainspring not shown, thereby achieving the function of causing the hour hand 5 and the minute hand 6 to move. The surface side train mainly has the barrel wheel 60 that houses the above-mentioned mainspring, the second wheel 50, and a third wheel not shown.

[0114] The barrel wheel 60 can rotate by elastic restoring force (power) accompanying the unwinding of the mainspring. As shown in Figure 1 and Figure 2 , the mainspring is wound via a stem shaft coupled to the stem 7.

[0115] The second wheel 50 can rotate in conjunction with the rotation of the above-mentioned barrel wheel 60 that rotates by power accompanying the unwinding of the mainspring.

[0116] As for the second wheel 50, the lower tenon portion is supported by a bearing shaft such as a hole drill held by the wheel train clamp plate 17, and the wheel shaft 51 is supported by a bearing shaft such as a hole drill held by the bottom plate 11, and is able to rotate around the needle axis C1. The second wheel 50 is provided with a second pinion 52 that transmits power from the reel wheel 60 side, and a second gear 53 that engages with a third wheel not shown. The wheel shaft 51 extends in a manner that protrudes more upward than the bottom plate 11.

[0117] The minute hand pinion 20 that constitutes the backside wheel train is disposed coaxially with the needle axis C1 above the bottom plate 11, and is able to rotate around the needle axis C1. The minute hand pinion 20 has a minute hand pinion main body 21 formed in a top-hat shape, and a minute hand pinion tooth portion 22 that combines with the lower end portion of the minute hand pinion main body 21 and engages with the cross wheel gear 32 described later.

[0118] The wheel shaft 51 of the second wheel 50 is inserted into the inside of the minute hand pinion main body 21. At this time, an intermediate thin portion (thin wall portion) having elasticity is formed in the minute hand pinion main body 21, and a holding torque is generated between the wheel shaft 51 using the elasticity of the intermediate thin portion. Thereby, the minute hand pinion 20 is able to rotate around the needle axis C1 together with the second wheel 50 at the time of normal needle movement.

[0119] The upper end portion of the minute hand pinion main body 21 protrudes more upward than the dial 4 and the hour wheel 40. The minute hand 6 is installed at the upper end portion of the minute hand pinion main body 21. Thereby, the minute hand 6 is able to be directly moved by the rotation of the second wheel 50 and the minute hand pinion 20. Furthermore, the minute hand 6 is a rotation speed that is regulated by the escapement and the tourbillon 8 provided with the escapement, that is, rotates one turn in one hour.

[0120] Furthermore, at the time of time calibration, the minute hand pinion 20 is rotated by the winding stem 7 via a not-shown winding pinion train with a torque of the above holding torque or more, and thereby time calibration is able to be performed.

[0121] The hour wheel 40 that constitutes the backside wheel train is disposed coaxially with the needle axis C1, and is able to rotate around the needle axis C1. The hour wheel 40 is provided with a cylindrical hour wheel main body 41 that surrounds the minute hand pinion main body 21, and an hour wheel gear 42 that is integrally formed at the lower end portion of the hour wheel main body 41 and engages with the cross wheel pinion 31 described later.

[0122] As for the cross wheel 30 that constitutes the backside wheel train, the lower tenon portion is supported by a bearing shaft such as a hole drill held by the bottom plate 11, and the upper tenon portion is supported by a bearing shaft such as a hole drill held by the backside article pusher 15, and is able to rotate around the cross wheel axis C2. The cross wheel 30 is provided with a cross wheel pinion 31 that engages with the hour wheel gear 42, and a cross wheel gear 32 that engages with the minute hand pinion tooth portion 22 in the minute hand pinion 20. Thereby, the cross wheel 30 engages with both the minute hand pinion 20 and the hour wheel 40.

[0123] Thus, the hour wheel 40 is able to rotate around the pin axis CI in conjunction with the rotation of the minute pinion 20 and the cross wheel 30. Further, the upper end portion of the hour wheel body 41 protrudes more upward than the dial 4, and is disposed more downward than the upper end portion of the minute pinion body 21. Further, the hour hand 5 is installed at the upper end portion of the hour wheel body 41.

[0124] Thus, the hour hand 5 is positioned more on the dial 4 side than the minute hand 6 installed to the minute pinion 20. Thus, the hour hand 5 is able to be directly advanced by the rotation of the hour wheel 40. Further, the hour hand 5 is a rotation speed regulated by the escapement and the tourbillon 8 provided with the escapement, i.e., rotates one round in 12 hours.

[0125] The front side train and the back side train configured as described above are controlled in rotation by the escapement and the governor, and thus the minute hand 6 and the hour hand 5 are able to be appropriately advanced, and the correct time is able to be indicated.

[0126] (Moon Age Display Mechanism)

[0127] As shown in Figure 4 , the moon age display mechanism 12 is a mechanism functioning as an information display mechanism that displays information on the information on the waxing and waning of the moon (moon age), and is configured across multiple layers at a height between the base plate 16 and the back side article pusher 15, at the same height as the back side article pusher 15, and at a height more upward than the back side article pusher 15.

[0128] In the present embodiment, a block diagram of constituent components configuring the moon age display mechanism 12 is shown in Figure 8 , and the positional relationship of the heights of the respective constituent components is shown as "stages". "Stage 0" is a layer at the height at which the cross wheel gear 32 is positioned. "Stage 5" is a layer at the height most distanced upward from the bottom plate 11, and the moon plate 70 and the shadow plate 80 described later are positioned at Stage 5. Further, although the moon plate 70 and the shadow plate 80 are positioned at the same "Stage 5", the shadow plate 80 is positioned more upward than the moon plate 70.

[0129] Further, from the "Stage 0" side, "Stage 1", "Stage 2", "Stage 3", and "Stage 4" are sequentially positioned between "Stage 0" and "Stage 5".

[0130] As shown in Figures 3-6 and Figure 8As shown, the age-of-the-moon display mechanism 12 includes a moon plate (first display portion according to the present invention) 70 rotatable about a first axis O1, a shadow plate (second display portion) 80 rotatable about a second axis O2 arranged so as to be different from the first axis O1, a first power portion 90 that transmits power for rotating the moon plate 70 about the first axis O1 to the moon plate 70, a second power portion 91 that transmits power for rotating the shadow plate 80 about the second axis O2 to the shadow plate 80, and a rotation control portion 95 that controls the rotations of the moon plate 70 and the shadow plate 80 so that the moon plate 70 and the shadow plate 80 rotate at predetermined periods, respectively.

[0131] The age-of-the-moon display mechanism 12 according to the present embodiment cooperatively displays information on the waxing and waning of the moon, i.e., the age of the moon, based on changes in the relative positions of the rotation position of the moon plate 70 centered on the first axis O1 and the rotation position of the shadow plate 80 centered on the second axis O2. Specifically, the age of the moon can be displayed by changing the superimposition of the moon plate 70 and the shadow plate 80 so as to change in correspondence with the waxing and waning period of the moon (approximately 29.5 days).

[0132] Further, in Figures 1-4 , the case in which the moon plate 70 and the shadow plate 80 cooperatively display "age of the moon 7.4" is exemplified.

[0133] (Moon plate, shadow plate)

[0134] As shown in Figures 1-4 , the moon plate 70 and the shadow plate 80 are mainly arranged in a region between the needle axis C1 and the stem 7 in the plan view of the timepiece 1. Therefore, the moon plate 70 and the shadow plate 80 are arranged in a region on the side opposite the tourbillon 8 with the needle axis C1 interposed therebetween, i.e., in a region on the "3 o'clock" side of the dial 4.

[0135] In contrast, the first axis O1 of the moon plate 70 and the second axis O2 of the shadow plate 80 are arranged in the central portion of the movement 10 and are arranged in a separated state on the "12 o'clock" side and the "6 o'clock" side of the dial 4. The first axis O1 is arranged close to the "12 o'clock" of the dial 4, and the second axis O2 is arranged close to the "6 o'clock" of the dial 4.

[0136] As shown in Figure 3 , Figure 4 , Figure 9 , and Figure 10 , the moon plate 70 is a thickly thin circular plate formed in a circular shape simulating the plan view of the moon and is formed in a bright color such as yellow.

[0137] The moon plate 70 is integrally formed with a moon plate arm 71 having a fixed ring 72 disposed coaxially with the first axis O1. The moon plate arm 71 is a belt-shaped arm repeatedly bent in the planar direction of the base plate 11 and having a step difference in the thickness direction of the base plate 11. The fixed ring 72 is threadedly coupled to the upper end of the moon wheel 110 described later.

[0138] Thus, the moon plate 70 and the moon plate arm 71 are integrally coupled to the moon wheel 110 and can rotate around the first axis O1 in conjunction with the rotation of the moon wheel 110. More specifically, the moon plate 70 is controlled to reciprocate in a predetermined rotation angle range with the first axis O1 as the center.

[0139] The shadow plate 80 is a circular plate formed in a circular shape in plan view and having a small thickness, and is formed in a shape similar to that of the moon plate 70. In the illustrated example, the shadow plate 80 is formed in the same shape and the same size as the moon plate 70. However, the shadow plate 80 is not necessarily formed in the same shape and the same size as the moon plate 70, and may, for example, be formed to be slightly larger than the moon plate 70.

[0140] In addition, the shadow plate 80 is formed in a darker color than the moon plate 70, such as black or the like.

[0141] The shadow plate 80 is integrally formed with a shadow plate arm 81 having a fixed ring 82 disposed coaxially with the second axis O2. The shadow plate arm 81 is a belt-shaped arm repeatedly bent in plan view of the timepiece 1 and having a step difference in the thickness direction of the base plate 11. The fixed ring 82 is threadedly coupled to the upper end of the shadow wheel 150 described later.

[0142] Thus, the shadow plate 80 and the shadow plate arm 81 are integrally coupled to the shadow wheel 150 and can rotate around the second axis O2 in conjunction with the rotation of the shadow wheel 150. More specifically, the shadow plate 80 is controlled to reciprocate in a predetermined rotation angle range with the second axis O2 as the center.

[0143] The moon plate 70 and the shadow plate 80 configured as described above are disposed so as to have different height positions in the thickness direction of the base plate 11. Specifically, the moon plate arm 71 and the shadow plate arm 81 each have a stepped shape formed so as to be disposed with the shadow plate 80 positioned more upward than the moon plate 70. Thus, the moon plate 70 and the shadow plate 80 can coincide in the thickness direction of the base plate 11 in the middle of rotation.

[0144] (First power section)

[0145] As Figure 5 , Figure 6 , Figure 9 and Figure 11As shown, the first power unit 90 generates power to rotate the meniscus 70 and transmits the generated power to the meniscus 70.

[0146] The first power unit 90 includes: a moon return spring 100, which is a power source; a moon return wheel 120, which rotates around a third axis O3 by the elastic restoring force caused by the moon return spring 100; and a moon wheel 110, which rotates around a first axis O1 in conjunction with the rotation of the moon return wheel 120.

[0147] like Figure 9 , Figures 11-14 As shown, the moon reset wheel 120 mainly comprises: a moon reset wheel guide pin 121, which is coaxially fixed (e.g., pressed in) to the base plate 16 with the third axis O3; a moon reset shaft 122, which is assembled relative to the moon reset wheel guide pin 121 by connecting screws and is rotatably supported by the moon reset wheel guide pin 121 about the third axis O3; and a moon reset gear 123, which is rotatably assembled relative to the moon reset shaft 122 about the third axis O3.

[0148] The moon reset wheel guide pin 121 is formed in a cylindrical shape and has a threaded hole that opens upwards.

[0149] The moon return shaft 122 has a central tube 122a that surrounds the moon return wheel guide pin 121 from the outer side in the radial direction. The central tube 122a is formed in a multi-segment cylindrical shape with an outer diameter that varies in the vertical direction, and the lower end is formed in a D-shape (so-called D-section) when viewed from above. As a result, the spring fixing part 102 of the moon return spring 100, which will be described later, can be fitted into the lower end of the central tube 122a. Furthermore, a plurality of connecting teeth 124 are formed at intervals in the circumferential direction on the outer peripheral surface at the upper end of the moon return shaft 122.

[0150] like Figure 11 and Figure 12 As shown, each connecting tooth 124 has a first engaging surface 124a centered on the third axis O3 and facing counterclockwise, and a second engaging surface 124b centered on the clockwise.

[0151] In the illustrated example, the first engaging surface 124a and the second engaging surface 124b are inclined in a manner that gradually extends counterclockwise from the outer peripheral surface of the lunar reset shaft 122 toward the radially outward side. However, the inclination angle of the second engaging surface 124b is greater than that of the first engaging surface 124a.

[0152] The moon reset shaft 122, configured as described above, is rotatably supported by the moon reset wheel guide pin 121 shaft around the third axis O3, while being prevented from falling upward by the connecting screw that is threaded to the threaded hole of the moon reset wheel guide pin 121.

[0153] As Figure 9 , Figure 11 and Figure 12 shown, the month reset gear 123 is formed with a larger diameter than the month reset shaft 122 and is combined with the center pipe 122a so as to be relatively rotatable. Further, in the center pipe 122a, the anti-coming-off ring 125 is fixed in a manner of being stacked below the month reset gear 123.

[0154] The month reset gear 123 is engageable with the month wheel 110. Therefore, the month wheel 110 can be rotated around the first axis O1 in conjunction with the rotation of the month reset gear 123.

[0155] In the month reset gear 123, two support pins, that is, a first support pin 126 and a second support pin 127 are formed in a protruding manner toward the upper side. These first support pin 126 and second support pin 127 are formed in a manner of facing each other in a radial direction with the third axis O3 interposed therebetween.

[0156] Further, on the upper surface of the month reset gear 123, two coupling claws, that is, a first coupling claw 130 and a second coupling claw 135 that transmit the rotational torque of the month reset shaft 122 to the month reset gear 123 are disposed.

[0157] The first coupling claw 130 is disposed on the upper surface of the month reset gear 123 by the first support pin 126 and is swingable around the first support pin 126. The first coupling claw 130 has a first claw portion 130a extending from a base portion that surrounds the first support pin 126 toward the clockwise direction side and a first spring portion 130b extending from the base portion toward the counterclockwise direction side.

[0158] The second coupling claw 135 is configured similarly to the first coupling claw 130.

[0159] That is, the second coupling claw 135 is disposed on the upper surface of the month reset gear 123 by the second support pin 127 and is swingable around the second support pin 127. The second coupling claw 135 has a second claw portion 135a extending from a base portion that surrounds the second support pin 127 toward the clockwise direction side and a second spring portion 135b extending from the base portion toward the counterclockwise direction side.

[0160] The first spring portion 130b of the first coupling claw 130 contacts the second claw portion 135a of the second coupling claw 135 from the outside in the radial direction and presses the second claw portion 135a toward the inside in the radial direction by the elastic restoring force. Thereby, the second claw portion 135a is pressed so as to enter between the coupling teeth 124 of the month reset shaft 122 that are adjacent in the circumferential direction.

[0161] Likewise, the second spring portion 135b of the second coupling pawl 135 contacts the first pawl portion 130a of the first coupling pawl 130 from the outside in the radial direction and presses the first pawl portion 130a toward the inside in the radial direction by the elastic restoring force. Thereby, the first pawl portion 130a is pushed to enter between the coupling teeth 124 of the moon reset shaft 122 that are adjacent in the circumferential direction.

[0162] By the above, the first pawl portion 130a and the second pawl portion 135a can engage with the first engagement surface 124a of the coupling teeth 124 that are located on the clockwise direction side more than these first pawl portion 130a and second pawl portion 135a, and can engage with respect to the second engagement surface 124b of the coupling teeth 124 that are located on the counterclockwise direction side more than the first pawl portion 130a and the second pawl portion 135a.

[0163] In this engaged state, in the case where the moon reset shaft 122 rotates in the counterclockwise direction with the third axis O3 as the center, the engaged state described above can be maintained to transmit the rotation torque of the moon reset shaft 122 to the moon reset gear 123 via the first coupling pawl 130 and the second coupling pawl 135, and the moon reset gear 123 can be caused to collectively rotate in the counterclockwise direction as shown by the arrow. Figure 11

[0164] On the contrary, in the case where the moon reset shaft 122 rotates in the clockwise direction, the first pawl portion 130a and the second pawl portion 135a slide on the second engagement surface 124b by the inclination of the second engagement surface 124b of the coupling teeth 124 and are pressed toward the outside in the radial direction at the same time.

[0165] Thereby, the first coupling pawl 130 and the second coupling pawl 135 swing with the first pawl portion 130a and the second pawl portion 135a separated from the moon reset shaft 122 against the biasing force of the first spring portion 130b and the second spring portion 135b. Therefore, the coupling teeth 124 pass over the first pawl portion 130a and the second pawl portion 135a in the circumferential direction and move in the clockwise direction at the same time. Therefore, it is possible to rotate the moon reset shaft 122 in the clockwise direction without rotating the moon reset wheel 120.

[0166] That is, the first coupling pawl 130, the second coupling pawl 135, and the coupling teeth 124 function as a ratchet mechanism that causes the moon reset gear 123 to collectively rotate when the moon reset shaft 122 rotates in the counterclockwise direction, and allows the relative rotation of the moon reset shaft 122 with respect to the moon reset gear 123 when the moon reset shaft 122 rotates in the clockwise direction.

[0167] As shown in Figure 9 , Figure 13 and Figure 14 ​As illustrated, the month return spring 100 is a spiral spring configured by a metal such as iron or nickel or a non-metal such as silicon, and is arranged in a manner of being stacked on the upper surface of the base plate 16. The month return spring 100 is wound up by relatively rotating the outer end portion and the inner end portion in a manner of reducing the diameter, and is wound up. The wound-up month return spring 100 generates a rotational torque between the outer end portion and the inner end portion by elastically deforming.

[0168] The month return spring 100 includes a spring main body 101 formed in a spiral shape, a spring fixing portion 102 provided at the inner end portion of the spring main body 101, and a spring engaging portion 103 provided at the outer end portion of the spring main body 101.

[0169] The spring main body 101 is formed in a spiral shape extending along an Archimedean curve centered on the third axis O3 in a plan view. In addition, in the illustrated example, the spring main body 101 extends in a counterclockwise direction from the spring fixing portion 102 toward the spring engaging portion 103.

[0170] The spring fixing portion 102 is integrally formed at the inner end portion of the spring main body 101, is formed in a circular ring shape, and is arranged coaxially with the third axis O3. The spring fixing portion 102 is fitted to the lower end portion of the center pipe 122a of the month return shaft 122, and is combined with the center pipe 122a as a unit.

[0171] The spring engaging portion 103 is integrally formed at the outer end portion of the spring main body 101, and is formed at a position further outward in the radial direction than the outer peripheral portion of the spring main body 101 along the circumferential direction. The spring engaging portion 103 is engaged with respect to two fixing pins 104 provided to project from the base plate 16. Thus, the spring main body 101 becomes in a state in which the outer end portion side is fixed.

[0172] The month return spring 100 configured as described above is wound up by rotating the above-described month return shaft 122 in the clockwise direction. Then, the wound-up month return spring 100 is unwound, and thus a rotational torque in the counterclockwise direction is generated with respect to the month return shaft 122. Thus, the month return spring 100 can impart a rotational torque (driving force) in the counterclockwise direction to the month return shaft 122 and the month return gear 123.

[0173] In addition, in a case in which the month return gear 123 is rotated in the clockwise direction about the third axis O3, the first claw portion 130a and the second claw portion 135a rotate while maintaining a state of being engaged with respect to the first engagement surface 124a of the coupling tooth 124, and thus the month return shaft 122 can be rotated in the clockwise direction against the elastic restoring force of the month return spring 100.

[0174] That is, the month reset gear 123 is to be rotated always in the counterclockwise direction by the elastic restoring force of the wound month reset spring 100, but is also allowed to rotate toward the clockwise direction. By this, the oscillation of the later-described month return lever 195 is allowed.

[0175] As shown in Figures 9-11 , with respect to the month wheel 110, the lower tenon portion is supported by a bearing shaft such as a hole drill that is held by the base plate 16, and the month wheel 110 is rotatable around the first axis O1. The month wheel 110 is engaged with the above-described month reset gear 123, and is rotatable in conjunction with the rotation of the month reset gear 123. In particular, the month wheel 110 is to be rotated in the clockwise direction around the first axis O1 as shown by the arrow in Figure 11 by the rotational torque of the month reset spring 100 transmitted via the month reset gear 123.

[0176] In the wheel shaft 111 of the month wheel 110, a threaded hole that is open toward the upper side is formed. The fixed ring 72 of the month plate arm 71 described earlier coincides with the upper end portion of the wheel shaft 111 of the month wheel 110. Also, the month plate 70 is assembled integrally with the month wheel 110 via the fixed ring 72 by a coupling screw that is fixed to the threaded hole by screwing. By this, the month plate 70 is rotatable around the first axis O1 in conjunction with the rotation of the month wheel 110.

[0177] (Second power section)

[0178] As shown in Figure 5 , Figure 6 , Figure 10 and Figure 11 , the second power section 91 realizes the function of generating power for rotating the shadow plate 80 and transmitting the generated power to the shadow plate 80. The second power section 91 is configured equally to the above-described first power section 90, and thus a brief description will be given.

[0179] The second power section 91 is arranged in a manner that is line-symmetrical to the first power section 90 with respect to a first imaginary line L1 (refer to Figure 5 , Figure 11 ) that links the "3 o'clock" and the "9 o'clock" of the dial 4 in the plan view of the timepiece 1. By this, the first power section 90 and the second power section 91 can be arranged in balance, and for example, excellent design and conception can be obtained when visually recognized through the main glass 2.

[0180] As shown in Figure 10 and Figure 11 , the second power section 91 is provided with a shadow reset spring 140 that is a power source, a shadow reset wheel 160 that is rotatable around a fourth axis O4 by the elastic restoring force of the shadow reset spring 140, and a shadow wheel 150 that is rotatable around the second axis O2 in conjunction with the rotation of the shadow reset wheel 160.

[0181] The shadow reset wheel 160 mainly has: a shadow reset wheel guide pin 161 fixed (e.g., press-fitted) to the base plate 16 coaxially with the fourth axis O4; a shadow reset shaft 162 combined with respect to the shadow reset wheel guide pin 161 via a coupling screw, and rotatably supported by the shadow reset wheel guide pin 161 around the fourth axis O4; and a shadow reset gear 163 relatively rotatably combined with respect to the shadow reset shaft 162 around the fourth axis O4.

[0182] The shadow reset shaft 162 has a center pipe 162a that surrounds the shadow reset wheel guide pin 161 from the outer side in the radial direction. The center pipe 162a is formed in a multi-stage cylindrical shape, and the lower end portion is formed in a D shape (so-called D cross section) as viewed from above, for example, so that the spring fixing portion 142 of the shadow reset spring 140 described later can be fitted to the lower end portion.

[0183] On the outer peripheral surface of the upper end portion in the shadow reset shaft 162, a plurality of coupling teeth 164 are formed at intervals in the circumferential direction. Each coupling tooth 164 has a first engagement surface 164a toward the clockwise direction side and a second engagement surface 164b toward the counterclockwise direction side, with the fourth axis O4 as the center.

[0184] The shadow reset shaft 162 configured as described above is rotatably supported by the shadow reset wheel guide pin 161 around the fourth axis O4 in a state where the coupling screw fixed to the threaded hole of the shadow reset wheel guide pin 161 prevents upward detachment.

[0185] The shadow reset gear 163 is formed with a larger diameter than the shadow reset shaft 162, and is relatively rotatably combined with the center pipe 162a. Further, in the center pipe 162a, an anti-disengagement ring 165 is fixed in a manner of being stacked below the shadow reset gear 163.

[0186] The shadow reset gear 163 can be engaged with the shadow wheel 150. Therefore, the shadow wheel 150 can be rotated around the second axis O2 in conjunction with the rotation of the shadow reset gear 163.

[0187] In the shadow reset gear 163, a first support pin 166 and a second support pin 167 are formed in a protruding manner toward the upper side, and a first coupling claw 170 and a second coupling claw 175 that transmit the rotation torque of the shadow reset shaft 162 to the shadow reset gear 163 are provided.

[0188] The first coupling claw 170 can swing around the first support pin 166, and has a first claw portion 170a and a first spring portion 170b. The second coupling claw 175 can swing around the second support pin 167, and has a second claw portion 175a and a second spring portion 175b.

[0189] The first spring portion 170b of the first coupling claw 170 presses the second claw portion 175a toward the inner side in the radial direction. Thereby, the second claw portion 175a is pushed to enter between the coupling teeth 164 of the shadow return shaft 162 adjacent in the circumferential direction. The second spring portion 175b of the second coupling claw 175 presses the first claw portion 170a toward the inner side in the radial direction. Thereby, the first claw portion 170a is pushed to enter between the coupling teeth 164 of the shadow return shaft 162 adjacent in the circumferential direction.

[0190] The first claw portion 170a and the second claw portion 175a can engage with the first engagement surface 164a of the coupling teeth 164 located on the counterclockwise direction side more than these first claw portion 170a and second claw portion 175a, and can engage with respect to the second engagement surface 164b of the coupling teeth 164 located on the clockwise direction side more than the first claw portion 170a and the second claw portion 175a.

[0191] In such an engaged state, in the case where the shadow return shaft 162 rotates in the clockwise direction with the fourth axis O4 as the center, the above-mentioned engaged state can be maintained to transmit the rotation torque of the shadow return shaft 162 to the shadow return gear 163 via the first coupling claw 170 and the second coupling claw 175, and the shadow return gear 163 can be caused to collectively rotate in the clockwise direction as shown by the arrow. Figure 11

[0192] On the contrary, in the case where the shadow return shaft 162 rotates in the counterclockwise direction, the first claw portion 170a and the second claw portion 175a slide on the second engagement surface 164b by the inclination of the second engagement surface 164b of the coupling teeth 164 and are pressed toward the outer side in the radial direction at the same time. Thereby, the coupling teeth 164 pass over the first claw portion 170a and the second claw portion 175a in the circumferential direction and move in the counterclockwise direction at the same time. Therefore, it is possible to rotate only the shadow return shaft 162 in the counterclockwise direction without rotating the shadow return gear 160.

[0193] That is, the first coupling claw 170, the second coupling claw 175, and the coupling teeth 164 function as a ratchet mechanism that causes the shadow return gear 163 to collectively rotate when the shadow return shaft 162 rotates in the clockwise direction, and allows the relative rotation of the shadow return shaft 162 with respect to the shadow return gear 163 when the shadow return shaft 162 rotates in the counterclockwise direction.

[0194] The shadow return spring 140 is a spiral spring configured to be stacked on the upper surface of the base plate 16. The shadow return spring 140 rotates the outer end portion and the inner end portion relatively to wind up in a reduced diameter manner. The shadow return spring 140 that has been wound up generates a torque between the outer end portion and the inner end portion by elastic deformation.

[0195] ​The return spring 140 includes: a spring body 141 formed in a spiral shape; a spring fixing part 142 located at the inner end of the spring body 141; and a spring engaging part 143 located at the outer end of the spring body 141.

[0196] The spring body 141 is formed in a vortex shape, for example, when viewed from above, along an Archimedean curve centered on the fourth axis O4.

[0197] The spring fixing part 142 is integrally formed on the inner end of the spring body 141, is formed in a ring shape, and is arranged coaxially with the fourth axis O4. The spring fixing part 142 is combined with the lower end of the center tube 162a of the return shaft 162.

[0198] The spring engagement portion 143 is integrally formed on the outer end of the spring body 141, and is formed in the circumferential direction further outward in the radial direction than the outer periphery of the spring body 141. The spring engagement portion 143 is fixed to the base plate 16 by a fixing pin 144 or the like that protruding from the base plate 16.

[0199] The shadow return spring 140, thus configured, is wound up by rotating the aforementioned shadow return shaft 162 counterclockwise. Then, the wound shadow return spring 140 is unwound, thereby generating a clockwise rotational torque on the shadow return shaft 162. Thus, the shadow return spring 140 can impart a clockwise rotational torque (driving force) to the shadow return shaft 162 and the shadow return gear 163.

[0200] Furthermore, when the shadow reset gear 163 rotates counterclockwise around the fourth axis O4, the first claw portion 170a and the second claw portion 175a remain engaged with the first engagement surface 164a of the connecting tooth 164 and rotate, thus resisting the elastic restoring force of the shadow reset spring 140 and causing the shadow reset shaft 162 to rotate counterclockwise.

[0201] That is, the shadow return gear 163 will always rotate clockwise by the elastic restoring force of the already coiled shadow return spring 140, but it is also allowed to rotate counterclockwise. Thus, the swing of the shadow return needle bar 205, which will be described later, is allowed.

[0202] like Figure 10 and Figure 11 As shown, regarding the shadow wheel 150, the lower tenon is supported by a bearing shaft such as a drill bit held by the base plate 16, and the shadow wheel 150 can rotate about the second axis O2. The shadow wheel 150 meshes with the shadow return gear 163 and can rotate along with the rotation of the shadow return gear 163. In particular, the shadow wheel 150 will rotate about the second axis O2 by the rotational torque of the shadow return spring 140 transmitted via the shadow return gear 163. Figure 11The arrow is shown rotating in a counterclockwise direction.

[0203] A threaded hole that is open upward is formed in the axle 151 of the shadow wheel 150. The fixing ring 82 of the shadow plate arm 81 described earlier coincides with the upper end portion of the axle 151 of the shadow wheel 150. Further, the shadow plate 80 is assembled integrally with the shadow wheel 150 via the fixing ring 82 by a coupling screw that is fixed to the threaded hole by screwing. Thus, the shadow plate 80 can rotate around the second axis O2 in conjunction with the rotation of the shadow wheel 150.

[0204] (Rotation control section)

[0205] As shown in Figs. 1 and 2, the rotation control section 95 achieves the following function: controlling the rotation of the moon plate 70 and the shadow plate 80 so that the moon plate 70 and the shadow plate 80 configured as described above are rotated at a predetermined period, respectively. Figure 8 Figure 11 As shown in Figs. 1 and 2, the rotation control section 95 achieves the following function: controlling the rotation of the moon plate 70 and the shadow plate 80 so that the moon plate 70 and the shadow plate 80 configured as described above are rotated at a predetermined period, respectively.

[0206] In particular, the rotation control section 95 rotates the moon plate 70 and the shadow plate 80 that are disposed in a manner coinciding with the thickness direction of the base plate 11, thereby displaying the lunar age based on the change in the relative position of the moon plate 70 and the shadow plate 80, i.e., the change in the superposition situation of the moon plate 70 and the shadow plate 80, from the viewpoint of observing from the thickness direction of the base plate 11 as described earlier.

[0207] As shown in Figs. 1 and 2, the rotation control section 95 achieves the following function: controlling the rotation of the moon plate 70 and the shadow plate 80 so that the moon plate 70 and the shadow plate 80 configured as described above are rotated at a predetermined period, respectively. Figure 5 Figure 6 Figure 8 Figure 11 Figure 15 As shown in Figs. 1 and 2, the rotation control section 95 achieves the following function: controlling the rotation of the moon plate 70 and the shadow plate 80 so that the moon plate 70 and the shadow plate 80 configured as described above are rotated at a predetermined period, respectively.

[0208] (Lunar age wheel)

[0209] The lunar age wheel 180 mainly includes a lunar age wheel guide pin 181 that is disposed coaxially with the fifth axis O5, the lower end portion of which is fixed (e.g., press-fitted) to the base plate 16, and a lunar age wheel gear 182 that is assembled with respect to the lunar age wheel guide pin 181 via a coupling screw and can be rotatably supported by the lunar age wheel guide pin 181 around the fifth axis O5.

[0210] The lunar age wheel guide pin 181 is formed in a cylindrical shape and has a threaded hole that is open upward.

[0211] ​​​​​The age wheel 182 has a center pipe 182a that surrounds the age wheel guide pin 181 from the outside in the radial direction. The age wheel 182 is engaged with the fourth intermediate wheel 250 described later, and is able to rotate around the fifth axis line O5 in conjunction with the rotation of the fourth intermediate wheel 250. Furthermore, the age wheel 182 is able to be axially supported by the age wheel guide pin 181 in a state in which it is prevented from falling upward by a coupling screw that is fixed to a threaded hole of the age wheel guide pin 181 by threading, in a rotatable manner around the fifth axis line O5.

[0212] On the upper surface of the age wheel 182, as shown in Figure 5 , a plurality of age reading portions 183 that show the change in the state of the waxing and waning of the moon are shown in the circumferential direction at equal intervals with the fifth axis line O5 as the center. In the example shown in the drawing, a total of eight age reading portions 183 that show the change from the new moon through the full moon until the new moon is reached again are shown at equal intervals (spaced 45 degrees from the center of the fifth axis line O5).

[0213] Furthermore, the number of age reading portions 183 is not limited to eight, and can be changed as appropriate. These age reading portions 183 are able to be visually recognized through the main glass 2. In addition, the method of display of the age reading portions 183 is not particularly limited, and examples include printing, pasting a sticker, engraving, and the like.

[0214] As shown in Figure 5 and Figure 16 , the age wheel 180 configured as described above is configured to rotate one revolution in approximately 29.5 days, which is the period of the waxing and waning of the moon, in conjunction with the rotation of the cross wheel 30 via the age wheel train 210.

[0215] Furthermore, the age wheel 180 is disposed on the side opposite the tourbillon 8 in the radial direction, sandwiching the pin axis line Cl, in a plan view of the timepiece 1 ("3 o'clock" side of the dial 4). Therefore, the center of the tourbillon 8 and the center of the age wheel 180 are located on the first imaginary line LI in a plan view of the timepiece 1.

[0216] (Age Wheel Train)

[0217] As shown in Figure 7 , Figure 15 and Figure 16 , the age wheel train 210 has a first intermediate wheel 220 that rotates around a sixth axis line O6 in conjunction with the rotation of the cross wheel 30, a second intermediate wheel 230 that rotates around a seventh axis line O7 in conjunction with the rotation of the first intermediate wheel 220, a third intermediate wheel 240 that rotates around an eighth axis line O8 in conjunction with the rotation of the second intermediate wheel 230, and a fourth intermediate wheel 250 that rotates around a ninth axis line O9 in conjunction with the rotation of the third intermediate wheel 240, and rotates the age wheel 180.

[0218] The first intermediate wheel 220 is shaft-supported by the base plate 16, has a first intermediate pinion 222 and a first intermediate gear 221 that meshes with the cross wheel pinion 31. Thus, the first intermediate wheel 220 rotates around the sixth axis O6 in conjunction with the rotation of the cross wheel 30.

[0219] As for the second intermediate wheel 230, the upper tenon portion is shaft-supported by a bearing shaft such as a hole drill held by the backside article pusher 15, and the lower tenon portion is shaft-supported by a bearing shaft such as a hole drill held by the bottom plate 11. The second intermediate wheel 230 has a second intermediate pinion 232 and a second intermediate gear 231 that meshes with the first intermediate pinion 222. Thus, the second intermediate wheel 230 rotates around the seventh axis O7 in conjunction with the rotation of the first intermediate wheel 220.

[0220] As for the third intermediate wheel 240, the upper tenon portion is shaft-supported by a bearing shaft such as a hole drill held by the backside article pusher 15, and the lower tenon portion is shaft-supported by a bearing shaft such as a hole drill held by the base plate 16. The third intermediate wheel 240 has a third intermediate pinion 242 and a third intermediate gear 241 that meshes with the second intermediate pinion 232. Thus, the third intermediate wheel 240 rotates around the eighth axis O8 in conjunction with the rotation of the second intermediate wheel 230.

[0221] The fourth intermediate wheel 250 has an intermediate wheel guide pin 251 that is fixed (e.g., press-fitted) to the base plate 16 coaxially with the ninth axis O9, an intermediate wheel shaft 252 that is combined with respect to the intermediate wheel guide pin 251 via a coupling screw and is supported by the intermediate wheel guide pin 251 so as to be rotatable around the ninth axis O9, a fourth intermediate gear 253 that is combined with respect to the intermediate wheel shaft 252 in a state that maintains a certain frictional force (pressing force) and meshes with the third intermediate pinion 242, and a fourth intermediate pinion 254 that is formed in the intermediate wheel shaft 252 and meshes with the month gear 182. Thus, the fourth intermediate wheel 250 can rotate around the ninth axis O9 in conjunction with the rotation of the third intermediate wheel 240 and rotate the month wheel 180.

[0222] Further, the intermediate wheel shaft 252 is shaft-supported by the intermediate wheel guide pin 251 so as to be rotatable around the ninth axis O9 in a state that is prevented from falling upward by the coupling screw that is fixed to the threaded hole of the intermediate wheel guide pin 251.

[0223] Further, when the month is corrected, the fourth intermediate gear 253 can slip with respect to the intermediate wheel shaft 252 in a case where the month wheel 180 is rotated in the reverse direction of the usual needle advancing direction so that a relative rotational force exceeding the above-described frictional force acts between the intermediate wheel shaft 252 and the fourth intermediate gear 253.

[0224] The month wheel train 210 configured as described above is configured to transmit the rotational torque of the cross wheel 30 to the month wheel 180 at a predetermined reduction ratio, so as to cause the month wheel 180 to rotate one revolution in about 29.5 days (more specifically, 29.5306 days), which is the cycle of the gain and loss of the moon. Further, the month wheel 180 is configured to rotate in the clockwise direction around the fifth axis O5 at the time of the walk.

[0225] Further, as one example, the number of teeth of each wheel configuring the month wheel train 210 is cited.

[0226] As shown in Figure 8 , the number of teeth of the hour wheel gear 42 of the hour wheel 40 rotating one revolution in 12 hours is "32", and the number of teeth of the cross wheel pinion 31 engaged with the hour wheel gear 42 is "8". The number of teeth of the first intermediate gear 221 engaged with the cross wheel pinion 31 is "32", and the number of teeth of the first intermediate pinion 222 is "18". The number of teeth of the second intermediate gear 231 engaged with the first intermediate pinion 222 is "36", and the number of teeth of the second intermediate pinion 232 is "17". The number of teeth of the third intermediate gear 241 engaged with the second intermediate pinion 232 is "36", and the number of teeth of the third intermediate pinion 242 is "13". The number of teeth of the fourth intermediate gear 253 engaged with the third intermediate pinion 242 is "47", and the number of teeth of the fourth intermediate pinion 254 is "21". Further, the number of teeth of the month gear 182 engaged with the fourth intermediate pinion 254 is "81".

[0227] Therefore, in this month wheel train 210, the month wheel 180 rotates with a period of one revolution in 29.5307 days (an error of 0.0004% from the actual period of the moon).

[0228] (First rotation control section)

[0229] As shown in Figure 5 , Figure 6 , Figure 9 and Figure 11 , the first rotation control section 190 is provided with: a month cam (first cam relating to the present invention) 191 that rotates in conjunction with the rotation of the month wheel 180; and a month return lever (first control lever relating to the present invention) 195 that oscillates around the tenth axis O10 in pursuit of the rotation of the month cam 191, thereby controlling the rotation of the month plate 70.

[0230] In particular, the first rotation control section 190 controls the month plate 70 so as to reciprocate once in a predetermined rotation angle range around the first axis O1 in correspondence with one revolution of the month wheel 180.

[0231] (Second rotation control section)

[0232] As shown inFigure 5 , Figure 6 , Figure 10 and Figure 11 As shown, the second rotation control unit 200 includes: a shadow cam (the second cam according to the present invention) 201, which rotates in tandem with the rotation of the moon wheel 180; and a shadow return lever (the second control lever according to the present invention) 205, which follows the rotation of the shadow cam 201 and oscillates around the eleventh axis O11 to control the rotation of the shadow plate 80.

[0233] Specifically, the second rotation control unit 200 controls the shadow plate 80 so that the shadow plate 80 reciprocates once around the second axis O2 within a predetermined rotation angle range corresponding to one revolution of the lunar wheel 180. Furthermore, in this embodiment, the second rotation control unit 200 controls the shadow plate 80 to rotate at a different phase than the lunar plate 70.

[0234] Thus, the lunar plate 70 and the shadow plate 80 can display the lunar age based on the change in their relative positions corresponding to the phase difference.

[0235] (First Rotation Control Unit)

[0236] The first rotation control unit 190 will be described in detail.

[0237] like Figure 9 and Figure 11 As shown, the lunar cam 191 is integrally combined with the central tube 182a in the lunar wheel 180 and is coaxially arranged with the fifth axis O5. Thus, the lunar cam 191 and the lunar wheel 180 rotate once in approximately 29.5 days, which is the lunar cycle.

[0238] The crescent cam 191 is formed in a heart shape when viewed from above as follows: a portion of its outer peripheral surface is a recess 191a that is partially recessed inward toward the radial direction, and a portion located on the side opposite to the recess 191a in the radial direction, sandwiching the fifth axis O5, is a protrusion 191b. Therefore, the crescent cam 191 is a so-called heart-shaped cam.

[0239] The moon return needle rod 195 is positioned between the moon wheel 110 and the moon cam 191. The upper tenon of the wheel axle is supported by a bearing shaft such as a drill bit held by the back-side object pusher 15, and the lower tenon is supported by a bearing shaft such as a drill bit held by the base plate 16.

[0240] The moon cam lever 195 includes: a gear 196 formed in a fan shape when viewed from above, which meshes with the moon wheel 110; and a lever portion 197 that contacts the outer peripheral surface of the moon cam 191 from the radial direction. Regarding the lever portion 197, the tip is, for example, sharpened to make point contact with the outer peripheral surface of the moon cam 191.

[0241] Regarding the lunar return needle 195 configured in this way, it meshes with the lunar wheel 110, which will rotate clockwise around the first axis O1, via the gear 196, thus... Figure 11 As indicated by the arrow, it will swing counterclockwise around the tenth axis O10. As a result, the moon return lever 195 is subjected to a rotational torque that constantly pushes the lever 197 against the outer circumferential surface of the moon cam 191. Therefore, the moon return lever 195 is maintained in constant contact with the moon cam 191.

[0242] The first rotation control unit 190 is configured as described above, and thus can control the rotation of the moon wheel 110 and the moon plate 70 in accordance with the rotational position of the moon cam 191 that rotates together with the moon wheel 180. That is, the first rotation control unit 190 can control the rotation so that as the moon wheel 180 rotates one revolution, the moon plate 70 reciprocates once within a predetermined rotation angle range around the first axis O1.

[0243] (Second Rotation Control Unit)

[0244] The second rotation control unit 200 will be described in detail.

[0245] like Figure 10 and Figure 11 As shown, the shadow cam 201, like the moon cam 191, is integrally combined with the central tube 182a in the lunar wheel 180 and is coaxially arranged with the fifth axis O5. Thus, the lunar wheel 180, the moon cam 191, and the shadow cam 201 are arranged on a common coaxial axis. Furthermore, the shadow cam 201, like the moon cam 191, rotates once every approximately 29.5 days, which is the lunar cycle, together with the lunar wheel 180. In addition, the shadow cam 201 is positioned above the moon cam 191.

[0246] The shadow cam 201 is formed in a heart shape when viewed from above: a portion of its outer peripheral surface is a recessed portion 201a that is partially recessed inward toward the radial direction, and a portion located on the side opposite to the recessed portion 201a in the radial direction, sandwiching the fifth axis O5, is a protrusion 201b. Therefore, the shadow cam 201 is a so-called heart-shaped cam.

[0247] In this embodiment, the shadow cam 201 is symmetrically arranged relative to the moon cam 191 in the following manner: the positions of the recess 201a and the protrusion 201b relative to the recess 191a and the protrusion 191b of the moon cam 191 are relative to the third imaginary line L3 (see reference 1) when viewed from above on the clock 1. Figure 11 The lines are symmetrical, and the third imaginary line L3 is orthogonal to the first imaginary line L1 (the imaginary line connecting the "3 o'clock" and "9 o'clock" on the dial 4).

[0248] The return needle rod 205 is positioned between the shadow wheel 150 and the shadow cam 201. The upper tenon of the wheel axle is supported by a bearing shaft such as a drill bit held by the back-side object pusher 15, and the lower tenon is supported by a bearing shaft such as a drill bit held by the base plate 16.

[0249] The cam lever 205 includes: a gear 206 formed in a top-view fan shape that meshes with the cam wheel 150; and a lever portion 207 that contacts the outer peripheral surface of the cam 201 from the radial direction. Regarding the lever portion 207, the tip is, for example, sharpened to allow point contact with the outer peripheral surface of the cam 201.

[0250] Regarding the shadow return needle bar 205 configured in this way, it meshes with the shadow wheel 150, which will rotate counterclockwise around the second axis O2, via the gear plate 206, thus... Figure 11 As shown by the arrow, it will swing clockwise around the eleventh axis O11. As a result, the return needle lever 205 is subjected to a rotational torque that constantly pushes the lever portion 207 against the outer peripheral surface of the shadow cam 201. Therefore, the return needle lever 205 is maintained in constant contact with the shadow cam 201.

[0251] The second rotation control unit 200 is configured as described above, and thus can control the rotation of the shadow wheel 150 and the shadow plate 80 in accordance with the rotational position of the shadow cam 201 that rotates together with the moon wheel 180. That is, the second rotation control unit 200 can control the rotation so that as the moon wheel 180 rotates one revolution, the shadow plate 80 reciprocates once within a predetermined rotation angle range with the first axis O1 as the center and the moon plate 70 offset by a phase.

[0252] Specifically, the rotation control unit 95 of this embodiment includes the first rotation control unit 190 and the second rotation control unit 200 described above. As the moon wheel 180 rotates, the moon plate 70 and the shadow plate 80 rotate with different phase differences. Therefore, the moon plate 70 and the shadow plate 80 can rotate in a manner including at least the following: in a top-down view of the clock 1, the moon plate 70 is entirely hidden behind the shadow plate 80 in a concealed state, i.e., a crescent state (see reference 1). Figure 22 ); and the exposed state of the entire moon plate 70 detached from the back side of the shadow plate 80, i.e., the full moon state (refer to...). Figure 30 This will be explained in detail later.

[0253] (Age Correction Institution)

[0254] Furthermore, such as Figure 5 , Figure 6 , Figure 17 and Figure 18As shown, the age display mechanism 12 of this embodiment includes an age correction mechanism 13 that forcibly rotates the age wheel 180 and corrects the relative positional relationship between the age plate 70 and the shadow plate 80.

[0255] like Figure 17 and Figure 18 As shown, the age correction mechanism 13 includes: an age correction rod 300, which is disposed on the base plate 16 adjacent to the age wheel 180, and can be positioned around the swing axis M in standby position P1 and correction position P2 (see reference). Figure 21 The oscillation is between the following: the oscillation of the oscillation between ...

[0256] The month-age adjustment lever 300 is located radially outside the month-age wheel 180, specifically near the "1 o'clock" to "2 o'clock" positions on the dial 4, and is formed in an arc shape when viewed from above along the circumferential direction of the base plate 11. The first circumferential end 301 of the month-age adjustment lever 300, located on the side away from the month-age wheel 180, is oscillatingly guided by a swing pin 303 protruding upwards from the base plate 16. The central axis of the swing pin 303 is the aforementioned swing axis M.

[0257] Thus, the age correction rod 300 can swing around the swing axis M, enabling the second circumferential end 302, located on the side closest to the age wheel 180, to approach and separate from the age wheel 180.

[0258] Furthermore, the position where the second end 302 is close to the aging wheel 180 is the correction position P2, and the position where the second end 302 is separated from the aging wheel 180 is the standby position P1.

[0259] Furthermore, a guide hole 304 is formed in the age correction rod 300, which extends vertically through the age correction rod 300 and is formed in an arc shape with the swing axis M as the center. A positioning pin 305, which protrudes upward from the base plate 16, is inserted into the guide hole 304. Thus, the age correction rod 300 can be positioned in the standby position P1 or the correction position P2.

[0260] The age correction lever 300 is provided with a base end portion 311 fixed to the base plate 16 and an elastic spring portion 312 extending from the base end portion 311 in the clockwise direction. The elastic spring portion 312 presses the age correction lever 300 toward the outside in the radial direction by the elastic restoring force, thereby biasing the age correction lever 300 to the standby position PI. Thus, the age correction lever 300 is located at the standby position PI at the time of normal winding.

[0261] At the second peripheral end portion 302 of the age correction lever 300, as shown in Figure 4 and Figure 6 , an operation pin 306 protruding downward is fixed. The operation pin 306 penetrates the bottom plate 11 and the base plate 16 in the vertical direction and is accommodated in an operation hole 307 opened to the outside in the radial direction.

[0262] As shown in Figure 2 , an operation button 308 is provided in the watch case 3 so as to be capable of being pressed from the outside in opposition to the operation pin 306 in the radial direction. The operation button 308 is exposed to the side of the watch case 3 and is capable of being pressed from the outside.

[0263] Thus, the operation button 308 can be pressed to impart an external force to the age correction lever 300 via the operation pin 306, and the age correction lever 300 can be swung from the standby position PI toward the correction position P2 against the biasing force of the age correction lever spring 310.

[0264] As shown in Figure 17 and Figure 18 , an age correction pawl 320 is provided so as to be superposed on the upper surface of the second peripheral end portion 302 of the age correction lever 300. The age correction pawl 320 is capable of being swung about a swing pin 321 protruding upward from the upper surface of the second peripheral end portion 302. The age correction pawl 320 is provided with a first correction pawl 322 extending toward the age gear 182 in the age wheel 180 and a second correction pawl 323 extending more to the outside in the radial direction than the swing pin 321 and capable of contacting a positioning pin 324 protruding upward from the upper surface of the second peripheral end portion 302.

[0265] With respect to the first correction pawl 322, as shown in Figure 19 and Figure 20 , when the age correction lever 300 is located at the standby position PI, the first correction pawl 322 is positioned outside the tooth portion of the age gear 182, as shown in Figure 21 and Figures 19-21As shown, when the month correction lever 300 is located at the correction position P2, it is able to press into the tooth portion of the month gear 182 and rotate the month wheel 180 in the counterclockwise direction by an amount of rotation that is only, for example, equivalent to two teeth. Thereby, it is able to forcibly feed rotate the month wheel 180 in the counterclockwise direction.

[0266] Further, as shown, a pawl return spring 330 is provided to the month correction lever 300, which, when the month correction lever 300 is returned from the correction position P2 to the standby position PI, allows the first correction pawl 322 of the month correction pawl 320 to be separated from the month wheel 180, and, when the month correction lever 300 is returned to a position at which the first correction pawl 322 is separated from the month wheel 180, returns to a posture in which it biases the month correction pawl 320 and feeds rotation. Figure 11

[0267] The pawl return spring 330 has a base end portion 331 fixed to the upper surface of the month correction lever 300 and an elastic spring portion 332 extending in the clockwise direction from the base end portion 331. The elastic spring portion 332 biases the month correction pawl 320 with an elastic restoring force so as to push the first correction pawl 322 toward the month wheel 180 side. Thereby, the month correction pawl 320 is positioned in a posture in which the second correction pawl 323 is in contact with the positioning pin 324.

[0268] (Action of the Watch)

[0269] Next, the action of the watch 1 configured as described above will be described.

[0270] According to the watch 1 of the present embodiment, it is able to use power from the mainspring to regularly perform rotation control of the front side train and the back side train and simultaneously rotate the second wheel 50 and the third wheel in that order. Therefore, it is able to rotate the minute pinion 20 in conjunction with the rotation of the second wheel 50, and it is able to rotate the hour wheel 40 via the jumper 30. Thereby, it is able to cause the minute hand 6 and the hour hand 5 to move, respectively.

[0271] However, if the jumper 30 rotates, as shown in Figs. 6 and 7, it is able to transmit rotation torque to the month wheel 180 via the month train 210 (the first intermediate wheel 220, the second intermediate wheel 230, the third intermediate wheel 240, and the fourth intermediate wheel 250), and thus it is able to rotate the month wheel 180 in the clockwise direction with the fifth axis line O5 as the center. Also, it is able to rotate the month wheel 180 in such a manner that it rotates one revolution in approximately 29.5 days, which is the gain and loss period of the moon. Figure 16 Figure 1

[0272] ​​​The month age wheel 180 rotates, thereby enabling the month cam 191 and the shadow cam 201 to rotate in conjunction with the month age wheel 180. Thus, the rotation of the month plate 70 and the shadow plate 80 can be controlled by the rotation control section 95, and at the same time, the month plate 70 can be rotated about the first axis O1 using the rotational torque from the first power section 90, and the shadow plate 80 can be rotated about the second axis O2 using the rotational torque from the second power section 91.

[0273] At this time, as shown in Figure 22 , the first axis O1 and the second axis O2 are different axes, and thus the month plate 70 and the shadow plate 80 can be individually moved in a state of being separated in the planar direction. Thus, the relative positions of the rotation position of the month plate 70 centered on the first axis O1 and the rotation position of the shadow plate 80 centered on the second axis O2 can be changed at all times, and the month age can be displayed based on the change in the relative positions of the month plate 70 and the shadow plate 80.

[0274] In particular, the month plate 70 and the shadow plate 80 can be individually rotated in a manner of being overlapped in the thickness direction of the base plate 110, and thus the month age can be displayed based on the change in the relative positions in the planar view of the watch 1, that is, the change in the superposition of the month plate 70 and the shadow plate 80. Thus, the change in the relative positions of the month plate 70 and the shadow plate 80 can be clearly visually recognized, and the month age can be displayed with good visual recognition.

[0275] The month age is described in detail.

[0276] In the present embodiment, the month cam 191 and the shadow cam 201 can be rotated in conjunction with the rotation of the month age wheel 180. Thus, the month return lever 195 can be swung in a manner of following the rotation of the month cam 191, and the month plate 70 can be rotated in a manner of reciprocating once within a predetermined rotation angle range about the first axis O1 in correspondence with the waxing and waning cycle of the moon. At the same time, the shadow return lever 205 can be swung in a manner of following the rotation of the shadow cam 201, and the shadow plate 80 can be rotated in a manner of reciprocating once within a predetermined rotation angle range about the second axis O2 in correspondence with the waxing and waning cycle of the moon.

[0277] Further, the month plate 70 and the shadow plate 80 can be rotated at different phases, and the month age can be displayed based on the change in the relative positions in correspondence with the phase difference, that is, the change in the superposition of the month plate 70 and the shadow plate 80.

[0278] That is, the superposition of the month plate 70 and the shadow plate 80 can be changed at all times within the waxing and waning cycle of the moon (about 29.5 days), and the month age can be displayed at a glance.

[0279] Specifically, as shown in Figure 23 and Figure 24As shown, by the rotation of the month wheel 180, the month cam 191 and the shadow cam 201 reach a position where the second imaginary line L2 linking the protruding portion 191b of the month cam 191 and the protruding portion 201b of the shadow cam 201 in a plan view of the timepiece 1 is orthogonal to the first imaginary line LI described earlier, thereby being able to display a hidden state in which the entire moon plate 70 is hidden on the back side of the shadow plate 80, i.e., a new moon "moon age 0".

[0280] If the month wheel 180 continues to rotate clockwise about the fifth axis O5 as the time changes from this state, the month cam 191 and the shadow cam 201 rotate together with the month wheel 180, and thus the moon return lever 195 and the shadow return lever 205 swing following them, respectively. Then, as shown, Figure 25 and Figure 26 As shown, the month cam 191 and the shadow cam 201 reach a position where the second imaginary line L2 is inclined at about 45 degrees with respect to the first imaginary line LI, thereby becoming a state in which a part of the moon plate 70 is exposed from the back side of the shadow plate 80, and it is possible to display a so-called crescent moon "moon age 3.7".

[0281] The month wheel 180, the month cam 191, and the shadow cam 201 further rotate as the time changes from this state, as shown, Figure 27 and Figure 28 As shown, the month cam 191 and the shadow cam 201 reach a position where the second imaginary line L2 is coincident with the first imaginary line LI, thereby becoming a state in which a part of the moon plate 70 is further exposed from the back side of the shadow plate 80, and it is possible to display a so-called first quarter moon "moon age 7.4".

[0282] The month wheel 180, the month cam 191, and the shadow cam 201 further rotate as the time changes from this state, as shown, Figure 29 and Figure 30 As shown, the month cam 191 and the shadow cam 201 reach a position where the second imaginary line L2 is inclined at about 45 degrees with respect to the first imaginary line LI, thereby becoming a state in which a part of the moon plate 70 is further exposed from the back side of the shadow plate 80, and it is possible to display a moon near full moon "moon age 11.1".

[0283] The month wheel 180, the month cam 191, and the shadow cam 201 further rotate as the time changes from this state, as shown, Figure 31 and Figure 32 As shown, the month cam 191 and the shadow cam 201 reach a position where the second imaginary line L2 is orthogonal to the first imaginary line LI, thereby being able to display an exposed state in which the entire moon plate 70 is exposed from the back side of the shadow plate 80, i.e., a full moon "moon age 14.8".

[0284] The month wheel 180, the month cam 191, and the shadow cam 201 further rotate as the time changes from this state, as shown,Figure 33 and Figure 34 As shown in Figs. 26 and 27, the moon cam 191 and the shadow cam 201 reach a position relationship in which the second imaginary line L2 is inclined at about 45 degrees with respect to the first imaginary line LI, thereby becoming a state in which a part of the moon plate 70 is hidden again at the back side of the shadow plate 80, and a so-called waning moon "moon age 18.5" can be displayed.

[0285] The moon age wheel 180, the moon cam 191, and the shadow cam 201 further rotate from this state in accordance with the change in time, as shown in Figs. 28 and 29. Figure 35 and Figure 36 As shown in Figs. 30 and 31, the moon cam 191 and the shadow cam 201 reach a position relationship in which the second imaginary line L2 is coincident with the first imaginary line LI, thereby becoming a state in which a part of the moon plate 70 is further hidden at the back side of the shadow plate 80, and a so-called last quarter moon "moon age 22.1" can be displayed.

[0286] The moon age wheel 180, the moon cam 191, and the shadow cam 201 further rotate from this state in accordance with the change in time, as shown in Figs. 32 and 33. Figure 37 and Figure 22 As shown in Figs. 34 and 35, the moon cam 191 and the shadow cam 201 reach a position relationship in which the second imaginary line L2 is inclined at 45 degrees with respect to the first imaginary line LI, thereby becoming a state in which a part of the moon plate 70 is further hidden at the back side of the shadow plate 80, and a so-called moon near the new moon "moon age 25.8" can be displayed.

[0287] The moon age wheel 180, the moon cam 191, and the shadow cam 201 further rotate from this state in accordance with the change in time, as shown in Figs. 36 and 37. Figure 23 and Figure 22 As shown in Figs. 38 and 39, a transition is made to a hidden state in which the entire moon plate 70 is hidden at the back side of the shadow plate 80, and a new moon "moon age 0" can be displayed. During this stage, the moon age wheel 180 rotates one revolution.

[0288] As described above, during the process in which the moon age wheel 180 rotates one revolution in a period (about 29.5 days) corresponding to the waxing and waning of the moon, the relative position of the moon plate 70 and the shadow plate 80, that is, the superimposition situation, can be changed at all times, and the moon age can be correctly displayed.

[0289] As explained above, the age display mechanism 12 according to the present embodiment displays the age using the change in the relative positions of the moon plate 70 and the shadow plate 80, and thus can display the age with good visual recognition even in a narrow region. Furthermore, the relative positions of the moon plate 70 and the shadow plate 80 can be changed all the time, and thus there is no activity that is not useful for displaying the age, and the age can be continuously displayed stably and efficiently. Furthermore, the moon plate 70 and the shadow plate 80 can also be reversed, and no activity such as instantaneous movement as in the past is required, and thus the load applied to the age display mechanism 12 can be reduced. Furthermore, no component having a thickness like a ball as in the past is required, and thus miniaturization and thinning can be sought.

[0290] Due to the above, the age display mechanism 12 according to the present embodiment can continuously display the age stably and efficiently with good visual recognition even in a narrow region, and can reduce the load applied to the age display mechanism 12, and further miniaturization and thinning can be sought.

[0291] Furthermore, the movement 10 and the timepiece 1 provided with the age display mechanism 12 according to the present embodiment can display the age as information other than the time continuously stably and efficiently with good visual recognition, and become a high-quality and high-performance movement and timepiece with improved functionality.

[0292] Furthermore, the age display mechanism 12 according to the present embodiment can overlap the moon plate 70 and the shadow plate 80, and thus can display the age efficiently in a narrower region, and can reduce the area required for age display. Therefore, even in a movement 10 having many timepiece components, the age display mechanism 12 can be easily incorporated.

[0293] Furthermore, when the age is displayed based on the change in the superimposition of the moon plate 70 and the shadow plate 80, a hidden state in which the entire moon plate 70 is hidden on the back side of the shadow plate 80 (a new moon state) and a revealed state in which the entire moon plate 70 is pulled out from the back side of the shadow plate 80 (a full moon state) can be exhibited, and thus two styles that differ greatly can be clearly expressed, and use can be facilitated. Figure 30 Figure 2

[0294] Furthermore, the moon plate 70 and the shadow plate 80 can be rotationally controlled in a reciprocating (swinging) manner, and thus even in a further narrow region, the moon plate 70 and the shadow plate 80 can be continuously moved and the age can be correctly displayed at the same time.

[0295] ​​Furthermore, the moon plate 70 and the shadow plate 80 can be rotated back and forth in relation to time changes using only the moon cam 191 and the shadow cam 201, thus achieving operational reliability and structural simplification. Moreover, by arranging the moon wheel 180, the moon cam 191, and the shadow cam 201 on a common coaxial axis, the entire moon age display mechanism 12 can be compactly arranged in the planar direction.

[0296] Furthermore, the moon plate 70 is formed with a bright color such as yellow, and the shadow plate 80 is formed with a dark color such as black. Therefore, based on the changes in the stacking of the moon plate 70 and the shadow plate 80, it is easy to clearly identify the moon age at a glance, such as new moon (age 0), full moon (age 14.8), first quarter moon (age 7.4), and last quarter moon (age 22.1).

[0297] Furthermore, the age display mechanism 12 of this embodiment includes an age correction mechanism 13, so that when age correction is required, the age wheel 180 can be fed to rotate, and the relative positional relationship between the age plate 70 and the shadow plate 80 can be corrected to perform age correction.

[0298] A detailed explanation will be provided.

[0299] When performing age correction, the side exposed on the watch case 3... Figures 19-21 The operation button 308 shown is pressed in. This allows the operation pin 306 to be pressed in, enabling... Figure 38 As shown, the age adjustment lever 300 swings from the standby position P1 to the adjustment position P2 against the bias force of the age adjustment lever spring 310. This allows the first adjustment claw 322 of the age adjustment claw 320 to press into the teeth of the age gear 182, causing the age wheel 180 to rotate in a counter-clockwise direction (opposite to the clockwise rotation) with a rotation amount equivalent to only two teeth. This forces the age wheel 180 to rotate counter-clockwise.

[0300] Therefore, the rotational position of the age wheel 180 can be corrected, the stacking of the menstrual plate 70 and the shadow plate 80 can be adjusted, and age correction can be reliably performed. In particular, the age reading section 183 is evenly spaced along the circumferential direction on the upper surface of the age gear 182, so age correction can be performed simultaneously with the age reading section 183 as a reference, making correction easy.

[0301] Furthermore, by feeding the 180 wheel to rotate in the opposite direction to the needle movement, the aging correction can be performed without being affected by the backlash in the meshing relationship between the 210 wheel train and the 180 wheel.

[0302] Further, the month wheel 180 is fed in rotation in the direction opposite to the winding direction, so that the fourth intermediate pinion 254 of the fourth intermediate wheel 250 is to be rotated in the direction opposite to the winding direction, but the fourth intermediate gear 253 is engaged with the other month wheel train 210. Thus, the fourth intermediate pinion 254 of the fourth intermediate wheel 250 can be slippable with respect to the fourth intermediate gear 253, and the month correction can be appropriately performed.

[0303] Further, if the pressing of the operation button 308 is released, the month correction lever 300 can be returned from the correction position P2 to the standby position PI by the biasing force of the month correction lever spring 310. At this time, the first correction pawl 322 of the month correction pawl 320 which is pressed to the tooth portion of the month wheel 182 is still engaged with the tooth portion, and the month correction lever 300 can be returned. However, the month correction pawl 320 can be caused to be away from the month wheel 180 against the biasing force of the pawl return spring 330, and thus, when the month correction lever 300 is returned to the standby position PI, the month correction pawl 320 can be prevented from reversing the month wheel 180 toward the position before the correction. Therefore, the corrected month can be reliably maintained.

[0304] Further, if the month correction lever 300 is returned to the standby position PI, the month correction pawl 320 is returned to the posture at the time of the fed rotation by the biasing force from the pawl return spring 330, and thus, the next month correction can be prepared.

[0305] The above describes the embodiments of the present application, but these embodiments are presented as examples, and are not intended to limit the scope of the application. The embodiments can be implemented in other various manners, and various omissions, substitutions, changes can be made within the scope of the gist of the application. In the embodiments or modifications thereof, examples such as examples which can be easily conceived by those skilled in the art, substantially identical examples, examples of equivalent range, and the like are included.

[0306] For example, in the above-described embodiments, a mechanical timepiece is exemplified, but is not limited to this case, and can be applied to, for example, a quartz timepiece. In this case, for example, it is sufficient that the rotation of each wheel is caused by the driving force of a stepping motor.

[0307] Further, in the above-described embodiments, a case where the month is displayed by a moon phase plate and a moon phase plate is exemplified, but the information to be displayed is not limited to the month. For example, a week or the like can be displayed instead of the month, and various information other than this can be displayed. In these cases, in correspondence with the information to be displayed, it is sufficient that the rotation speed of the rotation control portion or the shape of the first cam and the second cam is appropriately changed in addition to, for example, the shape, color, pattern, and the like of the first display portion and the second display portion.

[0308] Further, in the above-described embodiment, the moon phase train is configured by the first intermediate wheel, the second intermediate wheel, the third intermediate wheel, and the fourth intermediate wheel, but is not limited to this case, and can be arbitrarily configured as long as the moon phase wheel rotates one revolution in the synodic month (approximately 29.5 days).

[0309] Further, in the above-described embodiment, the configuration in which the individual power sources are provided by employing the moon correction spring as the power source of the first power section and employing the phantom correction spring as the power source of the second power section, but is not limited to this case.

[0310] For example, as shown in ​ , the moon phase display mechanism 12 can be configured as follows: as a common power source, one correction spring 400 is provided, and rotation torque generated by the correction spring 400 is transmitted to the moon wheel 110 and the phantom wheel 150 via the moon correction wheel 120 and the phantom correction wheel 160.

[0311] Symbol Explanation

[0312] O1 …… first axis

[0313] O2 …… second axis

[0314] P1 …… standby position

[0315] P2 …… correction position

[0316] 1 …… timepiece

[0317] 10 …… movement

[0318] 11 …… base plate

[0319] 12 …… moon phase display mechanism (information display mechanism)

[0320] 13 …… moon phase correction mechanism

[0321] 70 …… moon plate (first display section)

[0322] 80 …… phantom plate (second display section)

[0323] 90 …… first power section

[0324] 91 …… second power section

[0325] 95 …… rotation control section

[0326] 180 …… moon phase wheel (rotating body)

[0327] 190 …… first rotation control section

[0328] 191 …… moon cam (first cam)

[0329] 195 month return lever (first control lever)

[0330] 200 second rotation control section

[0331] 201 shadow cam (second cam)

[0332] 205 shadow return lever (second control lever)

[0333] 300 month age correction lever

[0334] 310 month age correction lever spring (lever spring)

[0335] 320 month age correction pawl (correction pawl)

[0336] 330 pawl return spring

Claims

1. An information display mechanism, characterized in that, Possessing: a first display portion that is rotatable about a first axis; a first power portion that transmits power to the first display portion; a second display portion that is rotatable about a second axis that is disposed so as to be different from the first axis; a second power portion that transmits power to the second display portion; and a rotation control portion that controls rotation of the first display portion and the second display portion so that the first display portion and the second display portion each rotate at a predetermined period, the first display portion and the second display portion cooperatively display information based on a change in relative position of a rotation position of the first display portion centered on the first axis and a rotation position of the second display portion centered on the second axis, the first display portion and the second display portion are disposed so as to be different in height position in a thickness direction of a base plate, the rotation control portion rotates the first display portion and the second display portion so as to coincide in the thickness direction of the base plate, the first display portion and the second display portion display the information based on a change in relative position in a plan view observed from the thickness direction of the base plate, the rotation control portion rotates the first display portion and the second display portion in at least a manner including: a hidden state in which an entirety of the first display portion is hidden from a back side of the second display portion, as observed from the thickness direction of the base plate, and a revealed state in which the entirety of the first display portion is withdrawn from the back side of the second display portion, on the way of rotation of the first display portion and the second display portion.

2. The information display mechanism according to claim 1, wherein the rotation control portion possesses: a rotation body that rotates in correspondence with a change in time; a first rotation control portion that rotationally controls the first display portion so as to reciprocate within a predetermined rotation angle range centered on the first axis in correspondence with rotation of the rotation body; and a second rotation control portion that rotationally controls the second display portion so as to reciprocate within a predetermined rotation angle range centered on the second axis in correspondence with rotation of the rotation body.

3. The information display mechanism according to claim 2, wherein the first rotation control portion possesses a first cam that rotates in correspondence with rotation of the rotation body, and a first control lever that swings in correspondence with rotation of the first cam so as to control rotation of the first display portion, the second rotation control portion possesses a second cam that rotates in correspondence with rotation of the rotation body, and a second control lever that swings in correspondence with rotation of the second cam so as to control rotation of the second display portion.

4. The information display mechanism according to claim 3, wherein the rotation body, the first cam, and the second cam are disposed on a common same axis.

5. The information display mechanism according to claim 2 or 3, wherein the rotation body is a month wheel that rotates one revolution in a month cycle of waxing and waning, the first rotation control portion controls rotation so that the first display portion reciprocates once in correspondence with one revolution of the rotation body. ​ ​ ​ The second rotation control section controls rotation so that the second display section reciprocates once at a different phase from the first display section in correspondence with one rotation of the rotating body, The first display section and the second display section display the age in months as the information based on a change in relative position corresponding to a phase difference.

6. The information display mechanism according to claim 1, wherein The first display section is a moon plate that is circular in a top view and imitates a moon, The second display section is a shadow plate that is circular in a top view and is darker in color than the first display section, The first display section and the second display section display the age in months as the information.

7. The information display mechanism according to claim 2 or 3, wherein The first display section is a moon plate that is circular in a top view and imitates a moon, The second display section is a shadow plate that is circular in a top view and is darker in color than the first display section, The first display section and the second display section display the age in months as the information.

8. The information display mechanism according to claim 5, wherein An age in months correction mechanism that forcibly rotates the rotating body and corrects the relative positional relationship of the first display section and the second display section is provided.

9. The information display mechanism according to claim 7, wherein An age in months correction mechanism that forcibly rotates the rotating body and corrects the relative positional relationship of the first display section and the second display section is provided.

10. The information display mechanism according to claim 8, wherein The age in months correction mechanism includes: An age in months correction lever that is disposed adjacent to the rotating body, is able to swing with a swing axis as a center between a standby position and a correction position, A lever spring that biases the age in months correction lever toward the standby position, and A correction claw that is swingably provided to the age in months correction lever, feeds the rotating body in a certain rotational amount in one direction when the age in months correction lever is in the correction position, A claw return spring is provided to the age in months correction lever, allows the correction claw to be away from the rotating body when the age in months correction lever is returned from the correction position to the standby position, and returns to a posture in which the correction claw is biased and the feeding rotation is performed when the age in months correction lever is returned to a position in which the correction claw is separated from the rotating body.

11. The information display mechanism according to claim 9, wherein The age in months correction mechanism includes: An age in months correction lever that is disposed adjacent to the rotating body, is able to swing with a swing axis as a center between a standby position and a correction position, A lever spring that biases the age in months correction lever toward the standby position, and A correction claw that is swingably provided to the age in months correction lever, feeds the rotating body in a certain rotational amount in one direction when the age in months correction lever is in the correction position, A claw return spring is provided to the age in months correction lever, allows the correction claw to be away from the rotating body when the age in months correction lever is returned from the correction position to the standby position, and returns to a posture in which the correction claw is biased and the feeding rotation is performed when the age in months correction lever is returned to a position in which the correction claw is separated from the rotating body. ​ In the month correction lever is provided with a claw return spring, the claw return spring allows the correction claw to be away from the rotating body when the month correction lever recovers from the correction position to the standby position, and resets to the posture of biasing the correction claw and proceeding the feed rotation when the month correction lever recovers until the position of the correction claw being separated from the rotating body.

12. A movement, characterized in that, The information display mechanism according to any one of claims 1 to 11 is provided.

13. A timepiece, characterized by The movement according to claim 12 is provided.

Images