CN114488755A - Information display mechanism, movement and timepiece - Google Patents

Abstract

Even in a narrow area, information can be continuously, stably and efficiently displayed with good visibility, and the load applied to the mechanism can be reduced, thereby further achieving miniaturization and thinning. Provided is an information display mechanism (12) which is provided with: a first display section (70) that is rotatable about a first axis (O1); a first power part (90) which transmits power to the first display part; a second display unit (80) that is rotatable about a second axis (O2) that is disposed so as to be a different axis from the first axis; a second power part (91) which transmits power to the second display part; and a rotation control unit (95) that controls the rotation of the first display unit and the second display unit so that the first display unit and the second display unit rotate in a predetermined cycle, respectively, and the first display unit and the second display unit display information in cooperation with each other based on a change in the relative position between the rotational position of the first display unit about the first axis and the rotational position of the second display unit about the second axis.

Description

Information display mechanism, movement and timepiece

Technical Field

The invention relates to an information display mechanism, a movement, and a timepiece.

Background

Conventionally, a timepiece including a month age display mechanism for displaying the age of a month is known as a timepiece for displaying information other than time. Such a month age display means is a means for displaying a state of a month repeatedly getting in and out at a certain cycle in association with a change in time, and the display method thereof has been studied in the past.

The "month age" is a numerical value that serves as a reference for obtaining the state of profit or loss of a month, and is known as a numerical value representing the number of days elapsed from a crescent moon, with a crescent moon being "month age 0". Generally, a month is repeatedly filled and lost in a cycle of about 29.5 days, and a full month is denoted as about "14.8 months old".

Patent document 1 discloses a timepiece with a month age display, which has a dial formed with a month age display window and a month plate for displaying two month images (full months), and which can display the month images through the month age display window in a manner of repeating profit and loss by rotating the month plate in association with a change in time.

Further, patent document 2 below discloses a month age display mechanism including: a fan-shaped month age display unit which displays the change of the profit or loss of the month in stages when viewed from above; and a month hand which swings in association with the time change and instructs the month age display unit.

Patent document 3 discloses a month age display mechanism including a dial having a month age display window formed in an arc shape in plan view, and a first month plate and a second month plate formed in different colors, the first month plate and the second month plate being related to a time change and swinging in opposite directions to each other in the month age display window.

The first and second month plates can be overlapped in the thickness direction of the timepiece, and the profit or loss of the month can be displayed by a change in the overlapping of the first and second month plates.

Further, patent document 4 listed below discloses a month age display mechanism having a ball that simulates a month and rotates the ball in association with a change in time.

Prior art documents

Patent document

Patent document 1: japanese patent No. 2635554;

patent document 2: european patent application publication No. 1321832;

patent document 3: european patent specification No. 1692574;

patent document 4: specification of european patent No. 2687918.

Disclosure of Invention

Problems to be solved by the invention

However, in the timepiece with a month age display described in patent document 1, since the two month pictures are displayed at an interval of 180 degrees on the month plate, the occupied area of the month plate occupied by the month pictures becomes large. Therefore, when a month chart having a diameter of 4 mm is displayed, for example, a month plate having a size of at least 10 mm is formed, and it is difficult to display the age of the month (information display) in a narrow area.

Further, when displaying the vicinity of a crescent moon, it is assumed that two-month images appear on the month age display window at the same time, and it is difficult to visually distinguish between the month ages. Therefore, there is room for improvement in stably performing the month age display (information display).

The month age display mechanism described in patent document 2 is a mechanism in which the load on the month age display mechanism is large because the mechanism is difficult to handle because the reversal of the month age display cannot be performed, and because the mechanism is a mechanism in which the month hand moves from the end point to the start point instantaneously when the profit or loss of the month ends.

In the month age display mechanism described in patent document 3, the first month plate and the second month plate are not stacked in half of the total movement amount of the first month plate and the second month plate, and therefore, there are many useless activities that do not contribute to the month age display. Therefore, there is room for improvement in continuously and efficiently performing the month age display (information display).

Further, in the month age display mechanism described in patent document 4, since a sphere simulating a month is used, the thickness is increased, and it is difficult to achieve downsizing, thinning, and the like.

The present invention has been made in view of such circumstances, and an object thereof is to provide an information display mechanism, a movement, and a timepiece as follows: even in a narrow area, information can be continuously, stably and efficiently displayed with good visibility, and the load applied to the mechanism can be reduced, thereby further reducing the size and thickness of the device.

Means for solving the problems

(1) An information display mechanism according to the present invention is characterized by comprising: a first display section rotatable about a first axis; a first power unit for transmitting power to the first display unit; a second display unit that is rotatable about a second axis that is disposed so as to be a different axis from the first axis; a second power unit for transmitting power to the second display unit; and a rotation control unit that controls rotation of the first display unit and the second display unit so that the first display unit and the second display unit rotate at a predetermined cycle, respectively, wherein the first display unit and the second display unit cooperatively display information based on a change in relative position between a rotational position of the first display unit about the first axis and a rotational position of the second display unit about the second axis.

According to the information display mechanism of the present invention, the rotation control unit controls the rotation of the first display unit and the second display unit, and the first display unit is rotated around the first axis line at a predetermined cycle by the power from the first power unit, and the second display unit is rotated around the second axis line at a predetermined cycle by the power from the second power unit. In this case, since the first axis and the second axis are different axes, the first display unit and the second display unit can be moved separately in a state of being separated in the plane direction. Thus, the relative position between the rotational position of the first display unit about the first axis and the rotational position of the second display unit about the second axis can be changed at every moment, and information can be displayed in cooperation with the change in the relative positions of the first display unit and the second display unit.

In this way, since information is displayed by utilizing the change in the relative position of the two display portions (the first display portion and the second display portion), information can be displayed with good visibility even in a narrow area. Further, since the relative positions of the two display units (the first display unit and the second display unit) can be changed at every moment, there is no unnecessary activity for displaying information, and information can be continuously, stably, and efficiently displayed. Further, the first display unit and the second display unit can be reversed, and movement such as instantaneous movement as in the conventional case is not required, so that the load applied to the mechanism can be reduced. Further, since a member having a thickness as in the conventional spherical body is not required, the reduction in size and thickness can be achieved.

(2) The first display unit and the second display unit may be disposed at different height positions in the thickness direction of the base plate, the rotation control unit may rotate the first display unit and the second display unit so as to overlap each other in the thickness direction of the base plate, and the first display unit and the second display unit may display the information based on a change in relative position in a plan view viewed from the thickness direction of the base plate.

In this case, since the first display portion and the second display portion can be rotated so as to overlap each other in the thickness direction of the base plate, information can be displayed based on a change in the relative position in a plan view (from the viewpoint) viewed in the thickness direction of the base plate, that is, a change in the state in which the first display portion and the second display portion are stacked. This makes it possible to clearly visually recognize the change in the relative position between the first display unit and the second display unit, and to display information with good visibility.

Further, since the first display unit and the second display unit can be superimposed on each other, information can be efficiently displayed in a narrower area, and the occupied area required for information display can be reduced. Therefore, the information display mechanism can be easily applied to various devices and the like.

(3) The rotation control unit may rotate the first display unit and the second display unit in the middle of rotation of the first display unit and the second display unit, so as to include at least: a hidden state in which the entire first display unit is hidden behind the second display unit when viewed from the thickness direction of the base plate; and an exposed state in which the entire first display unit is removed from the back side of the second display unit.

In this case, when information is displayed based on a change in the state of stacking the first display portion and the second display portion, the entire first display portion can be hidden on the back side of the second display portion and the entire first display portion can be exposed from the back side of the second display portion, and therefore, at least two different patterns can be clearly displayed, and the display device can be used easily.

(4) The rotation control unit may include: a rotating body that rotates in accordance with a time change; a first rotation control unit that controls rotation of the first display unit so that the first display unit is rotated back and forth within a predetermined rotation angle range around the first axis in accordance with rotation of the rotating body; and a second rotation control unit that controls rotation of the second display unit so that the second display unit is rotated back and forth within a predetermined rotation angle range around the second axis in accordance with rotation of the rotating body.

In this case, the first rotation control unit and the second rotation control unit respectively control the rotation of the first display unit and the second display unit in accordance with the rotation of the rotating body that rotates in accordance with the temporal change, and therefore, information can be displayed in a state associated with the temporal change. Therefore, information other than the time, for example, information such as the age of the month, the day of the week, and the date can be displayed.

Further, since the first display unit and the second display unit can be controlled to rotate in a reciprocating manner (swing), even in a further narrow area, the first display unit and the second display unit can be continuously moved and information can be accurately displayed at the same time.

(5) The first rotation control unit may include a first cam that rotates in accordance with rotation of the rotating body and a first lever that swings in accordance with rotation of the first cam to control rotation of the first display unit, and the second rotation control unit may include a second cam that rotates in accordance with rotation of the rotating body and a second lever that swings in accordance with rotation of the second cam to control rotation of the second display unit.

In this case, the first cam and the second cam can be simultaneously rotated along with the rotation of the rotating body by the rotating body rotating in accordance with the time change. Therefore, the first lever can be swung to follow the rotation of the first cam, and the first display unit can be appropriately reciprocally rotated by the swing of the first lever. Similarly, the second lever can be swung to follow the rotation of the second cam, and the second display unit can be appropriately reciprocally rotated by the swing of the second lever.

In particular, the first display unit and the second display unit can be rotated back and forth in association with a temporal change with a simple configuration using only the first cam and the second cam, and thus the reliability of operation and the simplification of the configuration can be achieved.

(6) The rotating body, the first cam, and the second cam may be disposed on a common axis.

In this case, the rotating body, the first cam, and the second cam can be disposed on a common coaxial line, and therefore the entire mechanism can be compactly disposed in a planar direction.

(7) The rotating body may be a month wheel that rotates one turn in a profit-and-loss cycle of a month, the first rotation control unit may control rotation so that the first display unit reciprocates once in accordance with one turn of the rotating body, the second rotation control unit may control rotation so that the second display unit reciprocates once in a phase different from that of the first display unit in accordance with one turn of the rotating body, and the first display unit and the second display unit may display the month age as the information based on a change in a relative position in accordance with the phase difference.

In this case, the rotor as the month wheel can be rotated slowly in accordance with the time change, and the rotor can be rotated in the profit-and-loss cycle of the month (about 29.5 days). In addition, the first display unit can be rotated to reciprocate once and the second display unit can be reciprocated once at a phase different from that of the first display unit, in accordance with the profit-loss cycle of the month. Accordingly, the first display section and the second display section can be rotated in different phases in accordance with the profit-and-loss cycle of the month, and the age of the month as information can be displayed based on a change in the relative position corresponding to the phase difference, that is, a change in the state of stacking the first display section and the second display section.

That is, the state of superimposition of the two display portions (the first display portion and the second display portion) can be changed at every moment within the profit-and-loss cycle of the month (about 29.5 days), and the age of the month can be grasped at a glance.

(8) The first display unit may be a moon plate having a circular shape in plan view in accordance with a moon, the second display unit may be a photographic plate having a circular shape in plan view darker than the first display unit, and the first display unit and the second display unit may display the age of the moon as the information.

In this case, since the first display portion is a moon plate and the second display portion is a dark shadow plate, the age of the moon, such as the new moon (age 0), the full moon (age 14.8), the first quarter moon (age 7.4), and the second quarter moon (age 22.1), can be clearly grasped at a glance depending on the change in the state of stacking the moon plate and the shadow plate.

(9) The lunar age correction mechanism may be provided to forcibly rotate the rotating body to correct the relative positional relationship between the first display unit and the second display unit.

In this case, the month age correction mechanism can forcibly rotate the rotating body as the month age wheel, and correct the relative positional relationship between the first display unit and the second display unit, thereby correcting the month age.

(10) The age correction mechanism may include: a month age correcting lever which is disposed adjacent to the rotating body and is swingable between a standby position and a correcting position about a swing axis; a lever spring that biases the age correcting lever toward the standby position; and a correction claw provided to be swingable to the month age correction lever, the correction claw being configured to rotationally advance the rotating body by a predetermined rotational amount in one direction when the month age correction lever is at the correction position, the month age correction lever being provided with a claw return spring configured to allow the correction claw to separate from the rotating body when the month age correction lever returns from the correction position to the standby position, and to return to a posture at which the correction claw is biased and rotationally advanced when the month age correction lever returns to a position at which the correction claw is separated from the rotating body.

In this case, when the month age correction is performed, if the month age 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 age correction lever is moved to the correction position, the correction pawl rotates the rotary body in one direction by a predetermined rotation amount. Thus, the rotational position of the rotating body as the month age wheel can be corrected, and the overlapping state of the first display part and the second display part can be corrected, thereby reliably correcting the month age.

In addition, if the swinging of the month age correction lever is released, the month age correction lever can be returned from the correction position to the standby position by the biasing force of the lever spring. In this case, since the correcting pawl can be separated from the rotating body against the biasing force of the pawl return spring, the correcting pawl can be prevented from reversing the rotating body toward the position before correction when the month age correcting lever is returned to the standby position. Therefore, the corrected age of the month can be maintained.

Further, if the month age is returned to the position at which the correction lever correction claw is separated from the rotating body, the correction claw is returned to the posture at the time of feed rotation by the biasing force from the claw return spring, and thus the next month age correction can be prepared.

(11) The movement according to the present invention is characterized by including the information display mechanism.

(12) A timepiece according to the present invention includes the movement.

In this case, since the information display mechanism is provided, it is possible to continuously, stably and efficiently display information other than time with good visibility, and it is possible to provide a high-quality and high-performance timepiece or movement with improved functionality.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, even in a narrow area, information can be continuously, stably and efficiently displayed with good visibility, and the load applied to the mechanism can be reduced, thereby further reducing the size and thickness of the device.

Drawings

Fig. 1 is a diagram showing an embodiment according to the present invention, and is a plan view of a timepiece.

Fig. 2 is a plan view of the timepiece shown in fig. 1 with the main glass, dial, and the like removed.

Fig. 3 is a plan view of the movement in a state where the indicating needle shown in fig. 2 has been removed.

Figure 4 is a perspective view of the movement of figure 2.

Fig. 5 is a plan view of the movement shown in fig. 3 with the moon plate, the shadow plate, the base plate, the back-side article presser, and the like removed.

Fig. 6 is a perspective view of a state in which the month plate, the photographic plate, the back-side article presser, and the like have been removed from the movement shown in fig. 3.

Fig. 7 is a longitudinal cross-sectional view of the movement shown in fig. 4, which is a longitudinal cross-sectional view of the periphery of the hour wheel, the geneva wheel and the lunar gear train.

Fig. 8 is a block diagram of a month age display mechanism provided in the movement shown in fig. 4.

Fig. 9 is a longitudinal cross-sectional view of the movement shown in fig. 4, and is a longitudinal cross-sectional view of the moon plate, the moon wheel, and the periphery of the first power unit.

Fig. 10 is a longitudinal cross-sectional view of the movement shown in fig. 4, and is a longitudinal cross-sectional view of the shadow plate, the shadow wheel, and the periphery of the second power unit.

Fig. 11 is a plan view showing the relationship among the month cam, the shadow cam, the month wheel, the first power unit, the second power unit, and the rotation control unit in the movement shown in fig. 4.

Fig. 12 is a perspective view of the periphery of the first power unit shown in fig. 11.

Fig. 13 is a perspective view showing a state in which the month reset gear has been detached from the state shown in fig. 12.

Fig. 14 is a perspective view showing a state where the coupling gear has been detached from the state shown in fig. 13.

Fig. 15 is a longitudinal cross-sectional view of the movement shown in fig. 4, and is a longitudinal cross-sectional view of the periphery of the lunar wheel and the lunar wheel train.

Fig. 16 is a plan view showing a relationship between the month wheel and the month wheel train in the movement shown in fig. 4.

Fig. 17 is a perspective view of the periphery of the age correcting mechanism shown in fig. 4.

Fig. 18 is a longitudinal cross-sectional view of the movement shown in fig. 4, and is a longitudinal cross-sectional view of the periphery of the age correcting mechanism.

Fig. 19 is a plan view illustrating a relationship between the month age correcting lever and the month age wheel in the month age correcting mechanism illustrated in fig. 17.

Fig. 20 is a plan view showing a state in which the month age correcting lever shown in fig. 19 is moved from the standby position toward the correcting position.

Fig. 21 is a plan view showing a state in which the month age correcting lever shown in fig. 20 is moved to the correcting position and the month age wheel is rotationally fed.

Fig. 22 is a plan view showing a state in which the moon plate and the shadow plate shown in fig. 4 cooperatively display "month age 0".

Fig. 23 is a plan view showing the relationship between the month cam and the shadow cam, and the month needle-returning member and the shadow needle-returning member in the state shown in fig. 22.

Fig. 24 is a plan view showing a state where "month age 3.7" is displayed in cooperation with the shadow plate from the state shown in fig. 22.

Fig. 25 is a plan view showing the relationship between the month cam and the shadow cam, and the month needle-returning member and the shadow needle-returning member in the state shown in fig. 24.

Fig. 26 is a plan view showing a state where "month age 7.4" is displayed in cooperation with the shadow plate from the state shown in fig. 24.

Fig. 27 is a plan view showing the relationship between the month cam and the shadow cam, and the month needle-returning member and the shadow needle-returning member in the state shown in fig. 26.

Fig. 28 is a plan view showing a state where "month age 11.1" is displayed in cooperation with the shadow plate from the state shown in fig. 26.

Fig. 29 is a plan view showing the relationship of the month cam and the shadow cam with the month needle-rewinding rod and the shadow needle-rewinding rod in the state shown in fig. 28.

Fig. 30 is a plan view showing a state where the moon plate and the shadow plate cooperatively display "month age 14.8" from the state shown in fig. 28.

Fig. 31 is a plan view showing the relationship between the month cam and the shadow cam, and the month needle-returning member and the shadow needle-returning member in the state shown in fig. 30.

Fig. 32 is a plan view showing a state where the moon plate and the shadow plate cooperatively display "month age 18.5" from the state shown in fig. 30.

Fig. 33 is a plan view showing the relationship between the month cam and the shadow cam, and the month needle-returning member and the shadow needle-returning member in the state shown in fig. 32.

Fig. 34 is a plan view showing a state where the moon plate and the shadow plate cooperatively display "month age 22.1" from the state shown in fig. 32.

Fig. 35 is a plan view showing the relationship between the month cam and the shadow cam, and the month needle-returning body and the shadow needle-returning body in the state shown in fig. 34.

Fig. 36 is a plan view showing a state where "month age 25.8" is displayed in cooperation with the shadow plate from the state shown in fig. 34.

Fig. 37 is a plan view showing the relationship between the month cam and the shadow cam, and the month needle-returning body and the shadow needle-returning body in the state shown in fig. 36.

Fig. 38 is a block diagram showing a modification of the month age display mechanism.

Detailed Description

Embodiments according to the present invention will be described below with reference to the drawings.

In the present embodiment, a mechanical timepiece having a middle-double-hand structure in which the hour hand and the minute hand are disposed at positions eccentric from the center of the movement and the second hand is not provided will be described as an example of a timepiece.

In the drawings of the present embodiment, in order to make the drawings easy to see, some parts of the timepiece components may be omitted from the drawings, and the parts may be simplified and illustrated.

In general, a mechanical body including a drive portion of a timepiece is referred to as a "movement". The following state is referred to as the "finished product" of the timepiece: and mounting the dial and the hands on the movement, and putting the movement into a clock shell to form a finished product. The side on which the glass of the case of the timepiece (i.e., the side on which the dial is present) is present on both sides of the bottom plate constituting the base plate of the timepiece is referred to as the "back side" of the movement. In addition, one of the two sides of the bottom plate on which the case back of the timepiece case (i.e., the side opposite to the dial) is present is referred to as the "watch side" of the movement.

In the present embodiment, a direction from the case back cover side (front side) toward the dial is described as an upper side, and the opposite side is described as a lower side. Therefore, the thickness direction of the base plate is the vertical direction. Further, in the present embodiment, a clockwise direction when viewed from above is referred to as a clockwise direction, and a counterclockwise direction when viewed from above is referred to as a counterclockwise direction, with each axis as a center.

As shown in fig. 1 and 2, the finished timepiece 1 of the present embodiment includes, in a timepiece case 3 in which a main glass 2, a back glass not shown, and a case back cover not shown are combined: a movement 10; a dial 4 having scales or the like showing at least information about hours; and hands including an hour hand 5 showing hours and a minute hand 6 showing minutes.

The dial 4 has a display window 4a that penetrates the dial 4 and is largely opened in the central portion thereof. Thus, the main timepiece components including the age display mechanism 12 described later can be visually recognized through the main glass 2 through the display window 4 a.

Thus, the timepiece 1 of the present embodiment is classified into a high-class timepiece having both fun and aesthetic properties of a mechanical timepiece in which precision timepiece technology is integrated, in addition to practical properties.

In the present embodiment, the hands including the hour hand 5 and the minute hand 6 are disposed at positions eccentric from the center of the movement 10 (specifically, eccentric in the "3 o' clock" direction of the dial 4). Therefore, the scale of the dial 4 is displayed unequally in the circumferential direction corresponding to the position of the pointer.

As shown in fig. 2, timepiece case 3 is formed in an annular shape having an annular case portion 3a surrounding movement 10. Thus, the annular shell portion 3a is open at the upper and lower sides. A back glass (not shown) is stacked on the lower surface side (front side) of the annular case portion 3 a. The case back cover is formed in an annular shape corresponding to the annular case portion 3a, and is assembled to the lower surface of the annular case portion 3a with the back side glass interposed therebetween.

Therefore, the timepiece 1 according to the present embodiment can also visually recognize the main timepiece components through the back side glass.

As shown in fig. 3 and 4, the movement 10 includes a bottom plate 11 constituting a base plate of the movement 10. The movement 10 is disposed inside the annular case portion 3a as described above.

As shown in fig. 3 to 7, at least the minute hand pinion 20, a back-side wheel train including the crown wheel 30 and the hour wheel 40, the month age display means (information display means according to the present invention) 12, and the month age correction means 13 are arranged on the back side (i.e., above) of the bottom plate 11. The back-side wheel train is pivotally supported between the back-side article presser 15 disposed on the back side of the base plate 11 and the base plate 11.

The dial 4 shown in fig. 1 is disposed above the back-side article pusher 15. A part of the back-side article presser 15 is disposed inside the display window 4a and can be visually recognized through the main glass 2.

As shown in fig. 4, 6, and 7, a base plate 16 is disposed between the back-side article presser 15 and the bottom plate 11. The base plate 16 is combined in a state of being superposed on the base plate 11, and a part thereof can be visually recognized through the main glass 2 (see fig. 1). The month age display means 12 is supported by the base plate 16.

On the front side (i.e., below) of the bottom plate 11, as shown in fig. 7, a front side wheel train including a second wheel 50 and a barrel wheel 60 is arranged.

In the present embodiment, as shown in fig. 1 and 2, a circular accommodation hole 11a is formed in the bottom plate 11 in a plan view, which penetrates the bottom plate 11, in a portion located on the opposite side of the stem 7 across the hands, that is, in a portion located on the "9 o' clock" side of the dial 4. Inside the accommodation hole 11a, a tourbillon 8 is disposed, and the tourbillon 8 includes a frame in which an escapement for controlling the rotation of the meter-side gear train and a governor for controlling the speed of the escapement are combined as one accessory (キャリッジ).

Note that the tourbillon 8 can have a known structure, and detailed description thereof is omitted. However, the tourbillon 8 is not necessarily required and may not be provided. In this case, for example, an escapement and a governor may be disposed on the front side of the base plate 11. Further, the tourbillon 8 can be visually recognized through the main glass 2 and the back side glass.

(wheel train on the front side and back side)

The front-side wheel train and the back-side wheel train are simply explained.

As shown in fig. 7, the front side gear train is disposed between a gear train bridge 17 disposed below the bottom plate 11 and the bottom plate 11, and rotates by an output torque accompanying unwinding of a not-shown mainspring, thereby achieving an action of moving the hour hand 5 and the minute hand 6. The front wheel train mainly includes a barrel 60 for accommodating the spring, a second wheel 50, a third wheel not shown, and the like.

The barrel wheel 60 can be rotated by an elastic restoring force (power) accompanying unwinding of the power spring. As shown in fig. 1 and 2, the power spring is wound up via a stem coupled to stem 7.

The second wheel 50 is rotatable in accordance with the rotation of the barrel wheel 60 rotated by the power generated by unwinding of the mainspring.

The second wheel 50 is rotatably supported about the needle axis C1 by the lower tenon portion being supported by a bearing such as a bored drill held by the train wheel bridge 17, and the wheel shaft 51 being supported by a bearing such as a bored drill held by the base plate 11. The second wheel 50 includes a second pinion 52 for transmitting power from the barrel 60 side and a second gear 53 meshing with a third wheel not shown. The wheel shaft 51 extends to protrude upward from the bottom plate 11.

The minute wheel pinion 20 constituting the back-side train wheel is disposed coaxially with the needle axis C1 above the bottom plate 11 and is rotatable about the needle axis C1. The minute hand pinion 20 has a minute hand pinion body 21 formed in a top cylindrical shape and a minute hand pinion tooth portion 22 combined with a lower end portion of the minute hand pinion body 21 and meshing with a jumper gear 32 described later.

The hub 51 of the second wheel 50 is inserted into the inner side of the minute hand pinion body 21. At this time, the minute pinion body 21 is formed with an elastic intermediate narrowed portion (thin portion), and a holding torque is generated between the minute pinion body and the hub 51 by the elasticity of the intermediate narrowed portion. Thus, the minute hand pinion 20 can rotate around the needle axis C1 together with the second wheel 50 during normal needle travel.

The upper end of the minute pinion main body 21 protrudes upward beyond the dial 4 and the hour wheel 40. A minute hand 6 is attached to an upper end portion of the minute hand pinion body 21. Thus, the minute hand 6 can be directly driven by the rotation of the second wheel 50 and the minute hand pinion 20. The minute hand 6 rotates once within 1 hour at a rotational speed regulated by an escapement and a tourbillon 8 provided with the escapement.

In time calibration, the minute hand pinion 20 is rotated by the stem 7 via a hand gear train not shown by a torque equal to or greater than the above-described holding torque, and time calibration can be performed.

The hour wheel 40 constituting the back-side train wheel is disposed coaxially with the needle axis C1 and is rotatable about the needle axis C1. The hour wheel 40 includes: a cylindrical hour wheel body 41 surrounding the minute hand pinion gear body 21; and an hour wheel gear 42 integrally formed at a lower end portion of the hour wheel main body 41 and meshing with a later-described carrier pinion 31.

The straddle wheel 30 constituting the back-side wheel train is supported at its lower tenon portion by a bearing shaft such as a bored drill held by the bottom plate 11, and at its upper tenon portion by a bearing shaft such as a bored drill held by the back-side article presser 15 so as to be rotatable about a straddle wheel axis C2. The geneva wheel 30 includes a geneva pinion 31 meshing with the hour wheel gear 42 and a geneva gear 32 meshing with the minute hand pinion tooth portion 22 of the minute hand pinion 20. Thus, the straddle wheel 30 meshes with both the minute hand pinion 20 and the hour wheel 40.

Thereby, the hour wheel 40 can rotate around the needle axis C1 in accordance with the rotation of the minute hand pinion 20 and the straddle wheel 30. The upper end of the hour wheel main body 41 projects upward from the dial 4 and is disposed below the upper end of the minute hand pinion main body 21. An hour hand 5 is attached to an upper end of the hour wheel main body 41.

Therefore, the hour hand 5 is located further toward the dial 4 side than the minute hand 6 attached to the minute hand pinion 20. This allows the hour hand 5 to be directly moved by the rotation of the hour wheel 40. The hour hand 5 rotates once within 12 hours at a rotational speed regulated by an escapement and a tourbillon 8 provided with the escapement.

The front side train wheel and the back side train wheel configured as described above are controlled to rotate by the escapement and the speed governor, and thus the minute hand 6 and the hour hand 5 can be appropriately moved to depict correct time.

(means for displaying age of the month)

As shown in fig. 4, the month age display means 12 functions as information display means for displaying information on profit and loss of the month (month age), and is disposed at a height between the base plate 16 and the back-side article presser 15, at the same height as the back-side article presser 15, at a height above the back-side article presser 15, and the like, and is configured to extend over a plurality of layers.

In the present embodiment, a block diagram of the components constituting the month age display means 12 is shown in fig. 8, and the height positional relationship of the components is displayed as a "hierarchy". The "level 0" is a level at which the idler gear 32 is located. The "level 5" is a level at a height maximally spaced upward from the bottom plate 11, and the moon plate 70 and the shadow plate 80, which will be described later, are located in the level 5. Further, although the moon plate 70 and the shadow plate 80 are located at the same "level 5", the shadow plate 80 is located further above the moon plate 70.

Further, from the "level 0" side, "level 1", "level 2", "level 3", and "level 4" are located between "level 0" and "level 5" in this order.

As shown in fig. 3 to 6 and 8, the month age display means 12 includes: a moon plate (a first display unit according to the present invention) 70 rotatable about a first axis O1; a shadow mask (second display unit) 80 rotatable about a second axis O2 disposed so as to be a different axis from the first axis O1; a first power part 90 that transmits power to the moon plate 70 for rotating the moon plate 70 about the first axis O1; a second power unit 91 that transmits power to the photographic plate 80 to rotate the photographic plate 80 about the second axis O2; and a rotation control unit 95 for controlling the rotation of the moon plate 70 and the shadow plate 80 so that the moon plate 70 and the shadow plate 80 rotate at a predetermined cycle.

The month age display means 12 of the present embodiment displays information on profit and loss of the month, that is, the month age, in cooperation with each other based on a change in the relative position between the rotational position of the moon plate 70 about the first axis O1 and the rotational position of the shadow plate 80 about the second axis O2. Specifically, the age of the month can be displayed by changing the change in the stacking condition of the moon plate 70 and the shadow plate 80 in correspondence with the profit-loss period of the month (about 29.5 days).

In fig. 1 to 4, an example is given in which the month plate 70 and the shadow plate 80 cooperatively display "month age 7.4".

(moon board, shadow board)

As shown in fig. 1 to 4, the month plate 70 and the picture plate 80 are mainly disposed in a region located between the hand axis C1 and the stem 7 in a plan view of the timepiece 1. Therefore, the month plate 70 and the shadow plate 80 are disposed in a region located on the opposite side of the tourbillon 8 across the hand axis C1, that is, in a region located on the "3 o' clock" side of the dial 4.

In contrast, the first axis O1 of the moon plate 70 and the second axis O2 of the shadow plate 80 are disposed in the center portion of the movement 10, and are disposed on the "12O 'clock" side and the "6O' clock" side of the dial 4 in a separated state. The first axis O1 is disposed near "12O 'clock" of the dial 4, and the second axis O2 is disposed near "6O' clock" of the dial 4.

As shown in fig. 3, 4, 9 and 10, the moon plate 70 is a circular plate with a small thickness in plan view, which is formed in a round shape in a manner imitating a moon, and is formed with a bright color such as yellow.

The moon plate 70 is integrally formed with a moon plate arm 71, and the moon plate arm 71 has a fixing ring 72 disposed coaxially with the first axis O1. The lunar plate arm 71 is a belt-shaped arm that is repeatedly bent in the planar direction of the bottom plate 11 and is stepped in the thickness direction of the bottom plate 11. The fixing ring 72 is screwed to an upper end of a moon wheel 110 described later.

Thereby, the moon plate 70 and the moon plate arm 71 are integrally coupled to the moon wheel 110, and can rotate about the first axis O1 along with the rotation of the moon wheel 110. More specifically, the moon plate 70 is controlled in the following manner: rotates back and forth within a predetermined rotation angle range around the first axis O1.

The photographic plate 80 is a circular plate formed in a circular shape in plan view and having a small thickness, and has an outer shape similar to the moon plate 70. In the illustrated example, the shadow plate 80 is formed in an outer shape in the same shape and the same size as the moon plate 70. However, the shadow plate 80 need not be formed in the same shape and the same size as the moon plate 70, and may be formed in such a manner that the shadow plate 80 is slightly larger than the moon plate 70, for example.

The shadow plate 80 is formed in a darker color than the moon plate 70, for example, black.

The imaging plate 80 is integrally formed with an imaging plate arm 81, and the imaging plate arm 81 has a fixing ring 82 disposed coaxially with the second axis O2. The plate arm 81 is a belt-shaped arm that is repeatedly bent in a plan view of the timepiece 1 and has a step in the thickness direction of the bottom plate 11. The fixing ring 82 is screwed to an upper end of a shadow wheel 150 described later.

Thereby, the shadow plate 80 and the shadow plate arm 81 are integrally coupled to the shadow wheel 150, and can rotate about the second axis O2 along with the rotation of the shadow wheel 150. More specifically, the shadow board 80 is controlled in the following manner: rotates back and forth within a predetermined rotational angle range around the second axis O2.

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 bottom plate 11. Specifically, the moon plate arm 71 and the shadow plate arm 81 are formed in a stepped manner, and are arranged such that the shadow plate 80 is positioned above the moon plate 70. Thereby, the moon plate 70 and the shadow plate 80 can be overlapped in the thickness direction of the bottom plate 11 during the rotation.

(first Power section)

As shown in fig. 5, 6, 9 and 11, the first power part 90 performs a role of generating power for rotating the moon plate 70 and transmitting the generated power to the moon plate 70.

The first power unit 90 includes: a month return spring 100, which is a power source; a month return wheel 120 rotated about the third axis O3 by an elastic restoring force caused by the month return spring 100; and a month wheel 110 which rotates about the first axis O1 in conjunction with the rotation of the month reset wheel 120.

As shown in fig. 9, 11 to 14, the month return wheel 120 mainly includes: a lunar reset wheel guide pin 121 fixed (e.g., press-fitted) to the base plate 16 coaxially with the third axis O3; a monthly reset shaft 122 combined with respect to the monthly reset wheel guide pins 121 via coupling screws, and rotatably supported by the monthly reset wheel guide pins 121 about a third axis O3; and a month return gear 123 relatively rotatably combined about a third axis O3 with respect to the month return shaft 122.

The month return wheel guide pin 121 is formed in a cylindrical shape, and is formed with a screw hole opened upward.

The month reset shaft 122 is provided with a center tube 122a that surrounds the month reset wheel guide pin 121 from the outside in the radial direction. The center tube 122a is formed in a multi-stage cylindrical shape with an outer diameter varying in the vertical direction, and a lower end portion thereof is formed in a D shape (so-called D cross section) in plan view, for example. Thus, the spring fixing portion 102 of the month return spring 100, which will be described later, can be fitted to the lower end portion of the center tube 122 a. Further, a plurality of coupling teeth 124 are formed at intervals in the circumferential direction on the outer peripheral surface at the upper end portion of the month reset shaft 122.

As shown in fig. 11 and 12, each coupling tooth 124 includes a first engaging surface 124a facing counterclockwise about the third axis O3 and a second engaging surface 124b facing clockwise.

In the illustrated example, the first engaging surface 124a and the second engaging surface 124b are each inclined so as to gradually extend counterclockwise from the outer peripheral surface of the month reset shaft 122 outward in the radial direction. However, the inclination angle of the second engaging surface 124b is larger than that of the first engaging surface 124 a.

The month return shaft 122 configured as described above is pivotally supported by the month return wheel guide pin 121 so as to be rotatable about the third axis O3 in a state where it is prevented from being removed upward by a coupling screw screwed into a screw hole of the month return wheel guide pin 121.

As shown in fig. 9, 11 and 12, the month return gear 123 is formed with a larger diameter than the month return shaft 122, and is combined with the center pipe 122a so as to be relatively rotatable. Further, a slip-off preventing ring 125 is fixed to the center pipe 122a so as to be stacked below the month return gear 123.

The month reset gear 123 can be engaged with the month wheel 110. Therefore, the month wheel 110 can be rotated about the first axis O1 as the month return gear 123 rotates.

In the month return gear 123, two support pins, i.e., a first support pin 126 and a second support pin 127, are formed in a protruding manner toward the upper side. The first support pin 126 and the second support pin 127 are formed so as to face each other in the radial direction with the third axis O3 interposed therebetween.

Further, two coupling pawls, i.e., a first coupling pawl 130 and a second coupling pawl 135, which transmit the rotational torque of the month reset shaft 122 to the month reset gear 123 are arranged on the upper surface of the month reset gear 123.

The first coupling claw 130 is disposed on the upper surface of the month return gear 123 by the first support pin 126, and is swingable about the first support pin 126. The first coupling claw 130 includes a first claw portion 130a extending clockwise from a base portion surrounding the first support pin 126, and a first spring portion 130b extending counterclockwise from the base portion.

The second coupling claw 135 is formed in the same manner as the first coupling claw 130.

That is, the second coupling claw 135 is disposed on the upper surface of the month return gear 123 by the second support pin 127, and is swingable around the second support pin 127. The second coupling pawl 135 includes a second pawl portion 135a extending clockwise from a base portion surrounding the second support pin 127 and a second spring portion 135b extending counterclockwise from the base portion.

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 to the inside in the radial direction by the elastic restoring force. Thereby, the second pawl portion 135a is urged so as to enter between the coupling teeth 124 of the month reset shaft 122 which are adjacent in the circumferential direction.

Similarly, the second spring portion 135b of the second coupling claw 135 contacts the first claw portion 130a of the first coupling claw 130 from the outside in the radial direction, and presses the first claw portion 130a to the inside in the radial direction by the elastic restoring force. Thereby, the first pawl portions 130a are urged so as to enter between the coupling teeth 124 of the month reset shaft 122 that are adjacent in the circumferential direction.

As described above, the first claw portion 130a and the second claw portion 135a can engage with the first engaging surface 124a of the coupling tooth 124 positioned on the clockwise side of the first claw portion 130a and the second claw portion 135a, and can engage with the second engaging surface 124b of the coupling tooth 124 positioned on the counterclockwise side of the first claw portion 130a and the second claw portion 135 a.

In such an engaged state, when the month reset shaft 122 rotates counterclockwise about the third axis O3, the rotational torque of the month reset shaft 122 can be transmitted to the month reset gear 123 via the first coupling claws 130 and the second coupling claws 135 while maintaining the above-described engaged state, and the month reset gear 123 can be rotated counterclockwise as indicated by the arrow in fig. 11.

In contrast, when the month reset shaft 122 is rotated in the clockwise direction, the first claw portion 130a and the second claw portion 135a are pushed outward in the radial direction while sliding on the second engaging surface 124b by the inclination of the second engaging surface 124b of the coupling tooth 124.

Thereby, the first and second coupling pawls 130, 135 are swung against the biasing forces of the first and second spring portions 130b, 135b in such a manner that the first and second pawl portions 130a, 135a are separated from the month return shaft 122. Therefore, the coupling tooth 124 passes over the first and second pawls 130a and 135a in the circumferential direction while moving in the clockwise direction. Therefore, it is possible to rotate only the month reset shaft 122 in the clockwise direction without rotating the month reset wheel 120.

That is, the first coupling pawl 130, the second coupling pawl 135, and the coupling teeth 124 function as a ratchet mechanism as follows: when the month reset shaft 122 is rotated in the counterclockwise direction, the month reset gear 123 is rotated in unison, and when the month reset shaft 122 is rotated in the clockwise direction, the relative rotation of the month reset shaft 122 with respect to the month reset gear 123 is permitted.

As shown in fig. 9, 13, and 14, the month return spring 100 is a spiral spring made of metal such as iron or nickel, or nonmetal such as silicon, and is disposed so as to be superposed on the upper surface of the base plate 16. The month return spring 100 relatively rotates the outer end portion and the inner end portion, and winds up in a reduced diameter manner to wind up. The wound-up month return spring 100 generates a torque between the outer end portion and the inner end portion by elastically deforming.

The month return spring 100 includes: a spring main body 101 formed in a spiral shape; a spring fixing portion 102 located at an inner end portion of the spring main body 101; and a spring engaging portion 103 located at an outer end of the spring main body 101.

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, for example. In the illustrated example, the spring body 101 extends counterclockwise from the spring fixing portion 102 toward the spring engaging portion 103.

The spring fixing portion 102 is integrally formed at the inner end portion of the spring main body 101, is formed in an annular shape, and is arranged coaxially with the third axis O3. The spring fixing portion 102 is fitted to a lower end portion of a center tube 122a of the month return shaft 122, and is integrally combined with the center tube 122 a.

The spring engaging portion 103 is integrally formed at an outer end portion of the spring main body 101, and is formed along the circumferential direction at a position radially outward of the outer peripheral portion of the spring main body 101. The spring engaging portion 103 engages with two fixing pins 104 provided to protrude from the base plate 16. Thereby, the spring main body 101 is in a fixed state on the outer end side.

The month return spring 100 thus constructed is wound up by rotating the month return shaft 122 in the clockwise direction. Then, the wound-up month return spring 100 is unwound, thereby generating a counterclockwise rotational torque to the month return shaft 122. Thereby, the month return spring 100 can impart a rotational torque (driving force) rotating in the counterclockwise direction to the month return shaft 122 and the month return gear 123.

Further, when the month return gear 123 rotates clockwise about the third axis O3, the first claw portion 130a and the second claw portion 135a rotate while maintaining the state of being engaged with the first engaging surface 124a of the coupling tooth 124, and therefore the month return shaft 122 can rotate clockwise against the elastic restoring force of the month return spring 100.

That is, the month return gear 123 is to be rotated in the counterclockwise direction at all times by the elastic restoring force of the wound month return spring 100, but is also allowed to be rotated in the clockwise direction. This allows the rocking of the month return lever 195 described later.

As shown in fig. 9 to 11, the moon wheel 110 is pivotally supported at the lower tenon portion by a bearing such as a drill held by the base plate 16, and the moon wheel 110 is rotatable about the first axis O1. The month wheel 110 is engaged with the month return gear 123 and can rotate along with the rotation of the month return gear 123. Specifically, the month wheel 110 is to be rotated in the clockwise direction centering on the first axis O1 as shown by the arrow in fig. 11 by the rotational torque of the month return spring 100 transmitted via the month return gear 123.

A screw hole opened upward is formed in the hub 111 of the moon wheel 110. The fixing ring 72 of the moon plate arm 71 described above overlaps the upper end of the hub 111 of the moon wheel 110. Also, the moon plate 70 is integrally combined with the moon wheel 110 via the fixing ring 72 by a coupling screw threadedly fixed to the screw hole. Thereby, the moon plate 70 can rotate about the first axis O1 along with the rotation of the moon wheel 110.

(second Power section)

As shown in fig. 5, 6, 10, and 11, the second power portion 91 performs an action of generating power for rotating the photographic plate 80 and transmitting the generated power to the photographic plate 80. The second power unit 91 has the same configuration as the first power unit 90 described above, and therefore, the description thereof will be simplified.

The second power portion 91 is disposed so as to be line-symmetric with respect to a first virtual line L1 (see fig. 5 and 11) connecting "3 o 'clock" and "9 o' clock" of the dial 4 and the first power portion 90 in a plan view of the timepiece 1. Thus, the first power unit 90 and the second power unit 91 can be arranged in a well-balanced manner, and excellent design and design properties can be obtained when the main glass 2 is viewed, for example.

As shown in fig. 10 and 11, the second power unit 91 includes: a shadow return spring 140, which is a power source; a shadow return wheel 160 that rotates about the fourth axis O4 by an elastic restoring force caused by the shadow return spring 140; and a shadow wheel 150 that rotates about the second axis O2 in association with the rotation of the shadow reset wheel 160.

The shadow reset wheel 160 mainly includes: a return wheel guide pin 161 fixed (e.g., press-fitted) to the base plate 16 coaxially with the fourth axis O4; a reduction shaft 162 combined with the reduction wheel guide pin 161 via a coupling screw and supported by the reduction wheel guide pin 161 so as to be rotatable about a fourth axis O4; and a phantom return gear 163 combined to be rotatable about the fourth axis O4 relative to the phantom return shaft 162.

The shadow reset shaft 162 includes a center tube 162a surrounding the shadow reset wheel guide pin 161 from the outside in the radial direction. The center tube 162a is formed in a multi-stage cylindrical shape, and the lower end portion thereof is formed in a D shape (so-called D cross section) in plan view, for example, so that a spring fixing portion 142 of the shadow return spring 140, which will be described later, can be fitted to the lower end portion.

A plurality of coupling teeth 164 are formed on the outer peripheral surface of the upper end portion of the shadow reset shaft 162 at intervals in the circumferential direction. Each coupling tooth 164 includes a first engaging surface 164a facing clockwise around the fourth axis O4 and a second engaging surface 164b facing counterclockwise.

The shadow reset shaft 162 configured as described above is supported by the shadow reset wheel guide pin 161 so as to be rotatable about the fourth axis O4 in a state where the shadow reset shaft is prevented from falling upward by a coupling screw screwed into a screw hole of the shadow reset wheel guide pin 161.

The shadow reset gear 163 is formed to have a larger diameter than the shadow reset shaft 162 and is combined with the center pipe 162a so as to be relatively rotatable. Further, a slip-off preventing ring 165 is fixed to the center pipe 162a so as to be stacked below the shadow return gear 163.

Shadow reset gear 163 can be engaged with shadow wheel 150. Therefore, the shadow wheel 150 can be rotated about the second axis O2 as the shadow return gear 163 rotates.

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 rotational torque of the shadow reset shaft 162 to the shadow reset gear 163 are arranged.

The first coupling claw 170 is swingable around the first support pin 166, and includes a first claw portion 170a and a first spring portion 170 b. The second coupling claw 175 is swingable about the second support pin 167, and includes a second claw portion 175a and a second spring portion 175 b.

The first spring portion 170b of the first coupling claw 170 presses the second claw portion 175a inward in the radial direction. Thereby, the second claw portions 175a are urged so as to enter between the coupling teeth 164 adjacent in the circumferential direction of the shadow reset shaft 162. The second spring portion 175b of the second coupling claw 175 presses the first claw portion 170a inward in the radial direction. Thereby, the first claw portion 170a is pushed so as to enter between the coupling teeth 164 adjacent in the circumferential direction of the shadow reset shaft 162.

The first claw portion 170a and the second claw portion 175a can engage with the first engaging surface 164a of the coupling tooth 164 located on the counterclockwise side of the first claw portion 170a and the second claw portion 175a, and can engage with the second engaging surface 164b of the coupling tooth 164 located on the clockwise side of the first claw portion 170a and the second claw portion 175 a.

In such an engaged state, when the shadow reset shaft 162 rotates clockwise about the fourth axis O4, the rotational torque of the shadow reset shaft 162 can be transmitted to the shadow reset gear 163 via the first coupling claw 170 and the second coupling claw 175 while maintaining the engaged state described above, and the shadow reset gear 163 can be rotated together clockwise as indicated by the arrow shown in fig. 11.

In contrast, when the shadow reset shaft 162 is rotated in the counterclockwise direction, the first claw portion 170a and the second claw portion 175a are pushed outward in the radial direction while sliding on the second engagement surface 164b by the inclination of the second engagement surface 164b of the coupling tooth 164. Thereby, the coupling teeth 164 pass over the first and second claw portions 170a and 175a in the circumferential direction while moving in the counterclockwise direction. Therefore, only the shadow reset shaft 162 can be rotated in the counterclockwise direction without rotating the shadow reset wheel 160.

That is, the first coupling pawls 170, the second coupling pawls 175, and the coupling teeth 164 function as a ratchet mechanism as follows: when the scope reset shaft 162 rotates in the clockwise direction, the scope reset gear 163 is rotated together, and when the scope reset shaft 162 rotates in the counterclockwise direction, the relative rotation of the scope reset shaft 162 with respect to the scope reset gear 163 is allowed.

The shadow return spring 140 is a spiral spring and is disposed so as 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 relative to each other, and winds the shadow return spring in a reduced diameter manner to wind the shadow return spring. The wound shadow return spring 140 generates a torque between the outer end portion and the inner end portion by elastically deforming.

The shadow return spring 140 includes: a spring body 141 formed in a spiral shape; a spring fixing portion 142 located at an inner end portion of the spring main body 141; and a spring engaging portion 143 located at an outer end portion of the spring main body 141.

The spring main body 141 is formed in a spiral shape extending along an archimedean curve centered on the fourth axis O4 in a plan view, for example.

The spring fixing portion 142 is integrally formed at an inner end portion of the spring main body 141, is formed in an annular shape, and is arranged coaxially with the fourth axis O4. The spring fixing portion 142 is combined with a lower end portion of a center pipe 162a of the shadow return shaft 162.

The spring engaging portion 143 is integrally formed at an outer end portion of the spring main body 141, and is formed along the circumferential direction at a position radially outward of an outer peripheral portion of the spring main body 141. The spring engagement portion 143 is fixed to the base plate 16 by a fixing pin 144 or the like protruding from the base plate 16.

The shadow return spring 140 configured as described above is wound up by rotating the shadow return shaft 162 in the counterclockwise direction. Then, the wound shadow return spring 140 is unwound, thereby generating a clockwise rotational torque to the shadow return shaft 162. Thereby, the shadow return spring 140 can apply a rotational torque (driving force) rotating in the clockwise direction to the shadow return shaft 162 and the shadow return gear 163.

Further, when the image return gear 163 rotates counterclockwise about the fourth axis O4, the first claw portion 170a and the second claw portion 175a rotate while maintaining the state of being engaged with the first engaging surface 164a of the coupling tooth 164, and thus the image return shaft 162 can be rotated counterclockwise against the elastic restoring force of the image return spring 140.

That is, the shadow return gear 163 is to be rotated in the clockwise direction at all times by the elastic restoring force of the wound shadow return spring 140, but is allowed to be rotated in the counterclockwise direction. This allows the swinging of the needle return blade 205 described later.

As shown in fig. 10 and 11, with respect to the shadow wheel 150, the lower tenon portion is supported by a bearing shaft such as a bored hole held by the base plate 16, and the shadow wheel 150 is rotatable about the second axis O2. The shadow wheel 150 is engaged with the shadow return gear 163 and can rotate in accordance with the rotation of the shadow return gear 163. Specifically, the shadow wheel 150 is rotated counterclockwise about the second axis O2 by the rotational torque of the shadow return spring 140 transmitted via the shadow return gear 163 as indicated by the arrow shown in fig. 11.

A threaded hole opened upward is formed in the wheel shaft 151 of the shadow wheel 150. The fixing ring 82 of the shadow mask arm 81 described above overlaps the upper end of the wheel shaft 151 of the shadow wheel 150. Further, the shadow plate 80 is integrally combined with the shadow wheel 150 via the fixing ring 82 by a coupling screw screwed to the screw hole. Thereby, the shadow plate 80 can rotate about the second axis O2 in accordance with the rotation of the shadow wheel 150.

(rotation control section)

As shown in fig. 8 and 11, the rotation control unit 95 performs the following functions: the rotation of the moon plate 70 and the shadow plate 80 is controlled so that the moon plate 70 and the shadow plate 80 configured as described above rotate at a predetermined cycle.

In particular, the rotation control unit 95 rotates the moon plate 70 and the shadow plate 80 which are disposed so as to overlap each other in the thickness direction of the bottom plate 11, and displays the age of the moon based on the change in the relative position between the moon plate 70 and the shadow plate 80, that is, the change in the state of stacking the moon plate 70 and the shadow plate 80, when viewed from the thickness direction of the bottom plate 11 as described above.

As shown in fig. 5, 6, 8, 11, and 15, the rotation control unit 95 includes: a month wheel (a rotating body according to the present invention) 180 that rotates in accordance with a change over time; a first rotation control unit 190 that controls rotation of the month plate 70 so as to rotate back and forth within a predetermined rotation angle range around the first axis O1 in accordance with rotation of the month wheel 180; and a second rotation control unit 200 that controls the rotation of the photographic plate 80 so that the photographic plate reciprocates within a predetermined rotation angle range around the second axis O2 in accordance with the rotation of the lunar wheel 180.

(moon wheel)

The month wheel 180 mainly includes: a lunar wheel guide pin 181 disposed coaxially with the fifth axis O5, and having a lower end fixed (e.g., press-fitted and fixed) to the base plate 16; and a lunar gear 182 combined with respect to the lunar wheel guide pin 181 via a coupling screw, and rotatably supported by the lunar wheel guide pin 181 about a fifth axis O5.

The lunar rover guide pin 181 is formed in a cylindrical shape and has a screw hole opened upward.

The lunar gear 182 includes a center tube 182a surrounding the lunar gear guide pin 181 from the outside in the radial direction. The month gear 182 meshes with a fourth intermediate wheel 250 described later, and is rotatable about a fifth axis O5 in accordance with rotation of the fourth intermediate wheel 250. The lunar gear 182 is pivotally supported by the lunar gear guide pin 181 so as to be rotatable about a fifth axis O5 in a state where upward detachment is prevented by a coupling screw screwed into a screw hole of the lunar gear guide pin 181.

As shown in fig. 5, a plurality of age reading units 183 showing changes in the profit-and-loss state of the month are displayed uniformly in the circumferential direction around the fifth axis O5 on the upper surface of the age gear 182. In the illustrated example, the total eight month age reading sections 183 showing the change from a crescent to a full month until the crescent is reached again are displayed at equal intervals (at 45 degrees intervals centering on the fifth axis O5).

The number of age reading units 183 is not limited to eight, and may be changed as appropriate. These age reading units 183 can be visually recognized through the main glass 2. The display method of the age reading unit 183 is not particularly limited, and examples thereof include printing, sticking a sticker, and engraving.

As shown in fig. 5 and 16, the month wheel 180 configured as described above is configured to rotate once in about 29.5 days, which is a profit-and-loss cycle of the month, in accordance with the rotation of the straddle wheel 30 via the month wheel train 210.

The month wheel 180 is disposed on the side opposite to the tourbillon 8 in the radial direction across the hand axis C1 in the plan view of the timepiece 1 (the "3 o' clock" side of the dial 4). Therefore, the center of the tourbillon 8 and the center of the lunar wheel 180 are located on the first imaginary line L1 in a plan view of the timepiece 1.

(lunar year wheel train)

As shown in fig. 7, 15, and 16, the month wheel train 210 includes: a first intermediate wheel 220 that rotates about a sixth axis O6 in conjunction with the rotation of the straddle wheel 30; a second intermediate wheel 230 that rotates about a seventh axis O7 in conjunction with the rotation of the first intermediate wheel 220; a third intermediate wheel 240 that rotates about an eighth axis O8 in conjunction with the rotation of the second intermediate wheel 230; and a fourth intermediate wheel 250 that rotates about a ninth axis O9 in conjunction with the rotation of the third intermediate wheel 240, and rotates the month wheel 180.

The first intermediate wheel 220 is pivotally supported by the base plate 16, and includes a first intermediate pinion 222 and a first intermediate gear 221 that meshes with the straddle pinion 31. Thereby, the first intermediate wheel 220 rotates about the sixth axis O6 along with the rotation of the straddle wheel 30.

With respect to the second intermediate wheel 230, the upper tenon portion is pivotally supported by a bearing such as a burr held by the back-side article presser 15, and the lower tenon portion is pivotally supported by a bearing such as a burr held by the bottom plate 11. The second intermediate wheel 230 includes a second intermediate pinion 232 and a second intermediate gear 231 meshing with the first intermediate pinion 222. Thereby, the second intermediate wheel 230 rotates about the seventh axis O7 in accordance with the rotation of the first intermediate wheel 220.

The third intermediate wheel 240 is pivotally supported at the upper tenon portion by a bearing such as a drill held by the back-side article presser 15, and at the lower tenon portion by a bearing such as a drill held by the base plate 16. The third intermediate wheel 240 includes a third intermediate pinion 242 and a third intermediate gear 241 meshed with the second intermediate pinion 232. Thereby, the third intermediate wheel 240 rotates about the eighth axis O8 along with the rotation of the second intermediate wheel 230.

The fourth intermediate wheel 250 includes: an intermediate wheel guide pin 251 fixed (e.g., press-fitted) to the base plate 16 coaxially with the ninth axis O9; an intermediate wheel shaft 252 combined with respect to the intermediate wheel guide pin 251 via a coupling screw, and rotatably supported by the intermediate wheel guide pin 251 about a ninth axis O9; a fourth intermediate gear 253 that is combined with the intermediate wheel shaft 252 in a state of maintaining a predetermined frictional force (pressing force) and meshes with the third intermediate pinion 242; and a fourth intermediate pinion 254 formed on the intermediate wheel shaft 252 and engaged with the month gear 182. Thereby, the fourth intermediate wheel 250 can rotate about the ninth axis O9 along with the rotation of the third intermediate wheel 240, and the month wheel 180 can be rotated.

The center wheel shaft 252 is supported by the center wheel guide pin 251 so as to be rotatable about the ninth axis O9 in a state where the center wheel shaft is prevented from falling upward by a coupling screw screwed into a screw hole of the center wheel guide pin 251.

When the month age is corrected, the fourth intermediate gear 253 can be caused to slip with respect to the intermediate hub 252 when the month age wheel 180 is rotated in the direction opposite to the normal course direction and a relative rotational force exceeding the frictional force acts between the intermediate hub 252 and the fourth intermediate gear 253.

The month wheel train 210 configured as described above is configured to transmit the rotational torque of the straddle wheel 30 to the month wheel 180 at a predetermined speed reduction ratio so that the month wheel 180 rotates once within about 29.5 days (more specifically, 29.5306 days) which is a profit-loss cycle of the month as described above. The month wheel 180 is configured to rotate clockwise about the fifth axis O5 during needle travel.

In addition, as an example, the number of teeth of each wheel constituting the month wheel train 210 is listed.

As shown in fig. 8, the number of teeth of the hour wheel gear 42 of the hour wheel 40 rotating once in 12 hours is "32", and the number of teeth of the geneva pinion 31 meshing with this is "8". The number of teeth of the first intermediate gear 221 meshing with the cross gear 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 meshing 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 meshing with the third intermediate pinion 242 is "47", and the number of teeth of the fourth intermediate pinion 254 is "21". The number of teeth of the month age gear 182 meshing with the fourth intermediate pinion 254 is "81".

Therefore, in the month wheel train 210, the month wheel 180 rotates at a period of 1 week (an error of 0.0004% from the actual month period) within 29.5307 days.

(first rotation control part)

As shown in fig. 5, 6, 9, and 11, the first rotation control unit 190 includes: a month cam (first cam according to the present invention) 191 that rotates with the rotation of the month wheel 180; and a month retracting lever (a first lever according to the present invention) 195 which swings about the tenth axis O10 following the rotation of the month cam 191 to control the rotation of the month plate 70.

Specifically, the first rotation control unit 190 controls the month plate 70 such that the month plate 70 reciprocates once about the first axis O1 within a predetermined rotation angle range in accordance with one rotation of the month wheel 180.

(second rotation control part)

As shown in fig. 5, 6, 10, and 11, the second rotation control unit 200 includes: a cam (a second cam according to the present invention) 201 that rotates with the rotation of the month wheel 180; and a shadow return lever (a second lever according to the present invention) 205 that swings about the eleventh axis O11 following the rotation of the shadow cam 201 to control the rotation of the shadow plate 80.

Specifically, the second rotation control unit 200 controls the shadow mask 80 such that the shadow mask 80 reciprocates once around the second axis O2 within a predetermined rotation angle range in accordance with one rotation of the month wheel 180. Further, the second rotation control unit 200 of the present embodiment controls the shadow plate 80 to rotate in a phase different from that of the moon plate 70.

Thereby, the moon plate 70 and the shadow plate 80 can display the age of the moon based on the change in the relative position corresponding to the phase difference.

(first rotation control part)

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

As shown in fig. 9 and 11, the month cam 191 is integrally combined with a center tube 182a of the month wheel 180, and is disposed coaxially with the fifth axis O5. Thus, the month cam 191 rotates one turn together with the month wheel 180 in about 29.5 days as a break and break cycle of the month.

The moon cam 191 is formed in a planar view heart shape as follows: a part of the outer peripheral surface is a recessed portion 191a partially recessed inward in the radial direction, and a part located on the opposite side of the recessed portion 191a in the radial direction across the fifth axis O5 is a protruding portion 191 b. Thus, the moon cam 191 is a so-called heart cam.

The month needle bar 195 is disposed between the month wheel 110 and the month cam 191, and the upper tenon portion of the wheel shaft is pivotally supported by a bearing such as a drill held by the back-side article presser 15, and the lower tenon portion is pivotally supported by a bearing such as a drill held by the base plate 16.

The month retracting lever 195 includes: a gear piece 196 formed in a fan shape in a plan view to be engaged with the moon wheel 110; and a lever portion 197 that contacts from the outside in the radial direction with respect to the outer peripheral surface of the month cam 191. The tip of the lever 197 is sharpened, for example, and can be in point contact with the outer peripheral surface of the month cam 191.

The month return lever 195 thus configured engages with the month wheel 110, which is about to rotate clockwise about the first axis O1, via the gear piece 196, and therefore swings counterclockwise about the tenth axis O10 as indicated by an arrow in fig. 11. Thus, the month reverse lever 195 receives a rotational torque such that the lever portion 197 is constantly pressed against the outer peripheral surface of the month cam 191. Therefore, the state in which the month retracting lever 195 is always in contact with the month cam 191 is maintained.

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

(second rotation control part)

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

As shown in fig. 10 and 11, the shadow cam 201 is integrally combined with the center tube 182a of the month wheel 180, and is disposed coaxially with the fifth axis O5, similarly to the month cam 191. Thus, the month wheel 180, the month cam 191, and the shadow cam 201 are disposed on the same axis. Further, the shadow cam 201 also rotates once in about 29.5 days as the profit-loss cycle of the month together with the month wheel 180, similarly to the month cam 191. The shadow cam 201 is disposed above the moon cam 191.

The shadow cam 201 is formed in a heart shape in a plan view as follows: a part of the outer peripheral surface is a recessed portion 201a partially recessed inward in the radial direction, and a part located on the opposite side of the recessed portion 201a in the radial direction with respect to the fifth axis O5 is a protruding portion 201 b. Thus, the shadow cam 201 is a so-called heart cam.

In the present embodiment, the shadow cam 201 is disposed symmetrically with respect to the moon cam 191 as follows: the positions of the recessed portion 201a and the projecting portion 201b are line-symmetric with respect to the recessed portion 191a and the projecting portion 191b of the month cam 191 with respect to a third imaginary line L3 (see fig. 11) in a plan view of the timepiece 1, and the third imaginary line L3 is orthogonal to the first imaginary line L1 (an imaginary line connecting "3 o 'clock" and "9 o' clock" of the dial 4).

The shadow return needle bar 205 is disposed between the shadow wheel 150 and the shadow cam 201, and the upper tenon portion of the wheel shaft is supported by a bearing such as a drill held by the back-side article presser 15, and the lower tenon portion is supported by a bearing such as a drill held by the base plate 16.

The clip lever 205 includes: a gear piece 206 formed in a fan shape in a plan view meshing with the shadow wheel 150; and a rod portion 207 that contacts the outer peripheral surface of the shadow cam 201 from the outside in the radial direction. The tip of the rod 207 can be point-contacted with the outer peripheral surface of the shadow cam 201, for example, by sharpening.

The shadow rotation needle bar 205 thus configured is engaged with the shadow wheel 150, which is about to rotate in the counterclockwise direction about the second axis O2, via the gear piece 206, and therefore, as indicated by an arrow in fig. 11, is about to swing in the clockwise direction about the eleventh axis O11. Thereby, the shadow needle lever 205 receives a rotational torque such that the lever portion 207 is constantly pressed against the outer peripheral surface of the shadow cam 201. Therefore, the shadow return pin 205 is kept in contact with the shadow cam 201 at all times.

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 lunar wheel 180. That is, the second rotation control unit 200 can control the rotation so that the shadow plate 80 makes one reciprocating movement within the predetermined rotation angle range around the first axis O1 in a state of being out of phase with the moon plate 70 as the moon wheel 180 makes one rotation.

In particular, the rotation control unit 95 of the present embodiment includes the first rotation control unit 190 and the second rotation control unit 200 described above, and rotates the month plate 70 and the photographic plate 80 with different phase differences as the month wheel 180 rotates, so that the month plate 70 and the photographic plate 80 can rotate while rotating at least as follows: a hidden state in which the entire moon plate 70 is hidden on the back side of the shadow plate 80 in a plan view of the timepiece 1, i.e., a crescent state (see fig. 22); and an exposed state in which the entire moon plate 70 is removed from the back side of the shadow plate 80, i.e., a full moon state (see fig. 30). This point will be explained in detail later.

(age correcting mechanism)

As shown in fig. 5, 6, 17, and 18, the month age display means 12 of the present embodiment further includes month age correcting means 13 for forcibly rotating the month age wheel 180 to correct the relative positional relationship between the month plate 70 and the photo plate 80.

As shown in fig. 17 and 18, the month age correcting mechanism 13 includes: a month age correcting lever 300 which is disposed on the base plate 16 in a state of being adjacent to the month age wheel 180 and which is swingable between a standby position P1 and a correcting position P2 (see fig. 21) about a swing axis M; a month age correcting lever spring (a lever spring according to the present invention) 310 that biases the month age correcting lever 300 toward the standby position P1; and a month age correcting pawl (correcting pawl according to the present invention) 320 which is provided swingably on the month age correcting lever 300, and which feeds and rotates the month age wheel 180 by a predetermined rotation amount in a counterclockwise direction opposite to the normal course when the month age correcting lever 300 is located at the correcting position P2.

The month age correcting lever 300 is disposed radially outward of the month age wheel 180, specifically, in the vicinity of "1 o 'clock" to "2 o' clock" of the dial 4, and is formed in an arc shape in plan view along the circumferential direction of the bottom plate 11. A first peripheral end portion 301 of the peripheral end portion of the month age correction lever 300 located on a side away from the month age wheel 180 is swingably guided by a swing pin 303 projecting upward from the base plate 16. The center axis of the rocking pin 303 is the above-described rocking axis M.

Thereby, the month age correcting lever 300 can swing about the swing axis M, and the second peripheral end portion 302 positioned on the side close to the month age wheel 180 among the peripheral end portions can be moved closer to and away from the month age wheel 180.

Further, a position where the second peripheral end portion 302 approaches the month wheel 180 is a correction position P2, and a position where the second peripheral end portion 302 separates from the month wheel 180 is a standby position P1.

Further, a guide hole 304 is formed in the month age correcting lever 300, and the guide hole 304 penetrates the month age correcting lever 300 in the vertical direction and is formed in an arc shape with the swing axis M as a center. Positioning pins 305 protruding upward from the base plate 16 are inserted into the guide holes 304. Thereby, the month age correcting lever 300 can be positioned at the standby position P1 or the correcting position P2.

The age correcting lever spring 310 includes a base end 311 fixed to the base plate 16, and an elastic spring portion 312 extending clockwise from the base end 311. The elastic spring portion 312 presses the month age correction lever 300 outward in the radial direction by the elastic restoring force, thereby biasing the month age correction lever 300 to the standby position P1. Thus, the month age correcting lever 300 is located at the standby position P1 during normal needle travel.

As shown in fig. 4 and 6, an operating pin 306 projecting downward is fixed to the second peripheral end portion 302 of the age correction lever 300. 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 outward in the radial direction.

As shown in fig. 2, the operation button 308 is provided in the wristwatch case 3 so as to be capable of being press-fitted into the operation pin 306 from a radial direction. The operation button 308 is exposed to the side of the timepiece case 3 and can be pressed from the outside.

Thus, the operation button 308 can be pushed in to apply 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 P1 toward the correction position P2 against the biasing force of the age correction lever spring 310.

As shown in fig. 17 and 18, the month age correcting pawl 320 is disposed so as to be superposed on the upper surface of the second peripheral end portion 302 of the month age correcting lever 300. The month age correcting pawl 320 is swingable about a swing pin 321 provided to protrude upward from the upper surface of the second peripheral end portion 302. The month age correcting pawl 320 includes: a first correction claw 322 extending toward the month wheel 182 in the month wheel 180; and a second correcting claw 323 that extends further toward the outside in the radial direction than the swing pin 321, and is contactable with a positioning pin 324 provided to project upward from the upper surface of the second peripheral end portion 302.

As shown in fig. 17 and 19, the first correcting pawl 322 is configured to be placed on standby outside the tooth portion of the month gear 182 when the month age correcting lever 300 is at the standby position P1, and as shown in fig. 20 and 21, when the month age correcting lever 300 is at the correcting position P2, the first correcting pawl can be press-fitted into the tooth portion of the month gear 182 and rotate the month wheel 180 counterclockwise by a rotation amount corresponding to, for example, only two teeth. This can forcibly rotate the month wheel 180 in the counterclockwise direction.

Further, as shown in fig. 19 to 21, the month age correcting lever 300 is provided with a pawl return spring 330, and the pawl return spring 330 allows the first correcting pawl 322 of the month age correcting pawl 320 to be separated from the month age wheel 180 when the month age correcting lever 300 is returned from the correcting position P2 to the standby position P1, and returns to a position where the first correcting pawl 322 is separated from the month age wheel 180 to bias the month age correcting pawl 320 and performs the feed rotation when the month age correcting lever 300 is returned to the position where the first correcting pawl 322 is separated from the month age wheel 180.

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

(action of clock)

Next, the operation of the timepiece 1 configured as described above will be described.

According to the timepiece 1 of the present embodiment, the second wheel 50 and the third wheel can be sequentially rotated while the rotation of the front side wheel train and the back side wheel train is regularly controlled by the power from the spring. Therefore, the minute hand pinion 20 can be rotated in accordance with the rotation of the second wheel 50, and the hour wheel 40 can be rotated via the straddle wheel 30. This enables the minute hand 6 and the hour hand 5 to be moved.

However, if the straddle wheel 30 rotates, as shown in fig. 11 and 16, the rotational torque can be transmitted to the month wheel 180 via the month wheel train 210 (the first intermediate wheel 220, the second intermediate wheel 230, the third intermediate wheel 240, and the fourth intermediate wheel 250), and therefore the month wheel 180 can be rotated clockwise about the fifth axis O5. The month wheel 180 can be rotated once in about 29.5 days, which is a profit-and-loss period of the month.

The month wheel 180 rotates, and the month cam 191 and the shadow cam 201 can be rotated together with the month wheel 180. Therefore, it is possible to control the rotation of the moon plate 70 and the shadow plate 80 by the rotation control portion 95, and simultaneously rotate the moon plate 70 about the first axis O1 by the rotational torque from the first power portion 90, and rotate the shadow plate 80 about the second axis O2 by the rotational torque from the second power portion 91.

At this time, as shown in fig. 1, since the first axis O1 and the second axis O2 are different axes, the moon plate 70 and the shadow plate 80 can be moved separately in a state of being separated in the plane direction. Accordingly, the relative position between the rotational position of the moon plate 70 about the first axis O1 and the rotational position of the shadow plate 80 about the second axis O2 can be changed at every moment, and the age of the month can be displayed in cooperation with the change in the relative positions of the moon plate 70 and the shadow plate 80.

In particular, since the moon plate 70 and the shadow plate 8 can be rotated so as to overlap each other in the thickness direction of the bottom plate 110, the age of the month can be displayed based on a change in the relative position in the plan view of the timepiece 1, that is, a change in the state in which the moon plate 70 and the shadow plate 80 are stacked. This makes it possible to clearly visually recognize the change in the relative position between the moon plate 70 and the photographic plate 80, and to display the age of the moon with good visibility.

The month age display will be described in detail.

In the present embodiment, the month cam 191 and the shadow cam 201 can be rotated together with the rotation of the month wheel 180. Therefore, the month retracting lever 195 can be swung so as to follow the rotation of the month cam 191, and the month plate 70 can be rotated so as to reciprocate once within a predetermined rotation angle range around the first axis O1 in accordance with the profit-loss period of the month. At the same time, the needle bar 205 can be swung so as to follow the rotation of the needle cam 201, and the plate 80 can be rotated so as to reciprocate once within a predetermined rotation angle range around the second axis O2 in accordance with the full-minus period of the month.

Further, the moon plate 70 and the shadow plate 80 can be rotated out of phase, and the age of the month can be displayed based on a change in the relative position corresponding to the phase difference, that is, a change in the state of stacking the moon plate 70 and the shadow plate 80.

That is, the stacking state of the moon plate 70 and the shadow plate 80 can be changed at every moment within the profit-loss period of the month (about 29.5 days), and the age of the month can be displayed at a glance.

Specifically, as shown in fig. 22 and 23, by the rotation of the month wheel 180, the month cam 191 and the shadow cam 201 reach a position where the second virtual line L2 connecting the protrusion 191b of the month cam 191 and the protrusion 201b of the shadow cam 201 is orthogonal to the previously described first virtual line L1 in the plan view of the timepiece 1, and a hidden state in which the entire month plate 70 is hidden on the back side of the shadow plate 80, that is, a new month "month age 0" can be displayed.

When the month wheel 180 continues to rotate clockwise about the fifth axis O5 from this state with the time change, the month cam 191 and the shadow cam 201 rotate together with the month wheel 180, and the month needle return lever 195 and the shadow needle return lever 205 swing following each other. Then, as shown in fig. 24 and 25, the moon cam 191 and the shadow cam 201 reach a positional relationship in which the second virtual line L2 is inclined at about 45 degrees with respect to the first virtual line L1, and a part of the moon plate 70 is exposed from the back side of the shadow plate 80, and a so-called moon "month age 3.7" can be displayed.

From this state, the month wheel 180, the month cam 191 and the shadow cam 201 are further rotated with the time change, and as shown in fig. 26 and 27, the month cam 191 and the shadow cam 201 reach a positional relationship in which the second virtual line L2 coincides with the first virtual line L1, and a part of the month plate 70 is further exposed from the back side of the shadow plate 80, and a so-called "month age 7.4" of the previous quarter month can be displayed.

The month wheel 180, the month cam 191, and the shadow cam 201 further rotate from this state with the time change, and as shown in fig. 28 and 29, the month cam 191 and the shadow cam 201 reach a positional relationship in which the second virtual line L2 is inclined at about 45 degrees with respect to the first virtual line L1, and a state is obtained in which a part of the month plate 70 is further exposed from the back side of the shadow plate 80, and a month "month age 11.1" near the full month can be displayed.

The month wheel 180, the month cam 191, and the shadow cam 201 further rotate from this state with the time change, and as shown in fig. 30 and 31, the month cam 191 and the shadow cam 201 reach a positional relationship in which the second virtual line L2 is orthogonal to the first virtual line L1, and thereby the full month "month age 14.8" in which the entire month plate 70 is pulled out from the back side of the shadow plate 80 can be displayed.

The month wheel 180, the month cam 191, and the shadow cam 201 further rotate from this state with a time change, and as shown in fig. 32 and 33, the month cam 191 and the shadow cam 201 reach a positional relationship in which the second virtual line L2 is inclined at about 45 degrees with respect to the first virtual line L1, and a state is obtained in which a part of the month plate 70 is again hidden on the back side of the shadow plate 80, and so-called "month age 18.5" of bed waiter can be displayed.

The month wheel 180, the month cam 191, and the shadow cam 201 further rotate from this state with a time change, and as shown in fig. 34 and 35, the month cam 191 and the shadow cam 201 reach a positional relationship in which the second virtual line L2 coincides with the first virtual line L1, and a state is obtained in which a part of the month plate 70 is further hidden on the back side of the shadow plate 80, and a so-called "month age 22.1" of the next quarter can be displayed.

The month wheel 180, the month cam 191, and the shadow cam 201 further rotate from this state with the time change, and as shown in fig. 36 and 37, the month cam 191 and the shadow cam 201 reach a positional relationship in which the second virtual line L2 is inclined at 45 degrees with respect to the first virtual line L1, and a state is obtained in which a part of the month plate 70 is further hidden on the back side of the shadow plate 80, and a so-called "month age 25.8" of a month in the vicinity of a crescent moon can be displayed.

The month wheel 180, the month cam 191, and the shadow cam 201 are further rotated from this state with a time change, and as shown in fig. 22 and 23, the state transitions to a hidden state in which the entire month plate 70 is hidden on the back side of the shadow plate 80, and a new month "month age 0" can be displayed. During this phase, the lunar wheel 180 rotates one revolution.

As described above, in the process of rotating the month wheel 180 once in a period (about 29.5 days) corresponding to the profit or loss of the month, the relative positions of the moon plate 70 and the shadow plate 80, that is, the stacking state can be changed at every moment, and the month age can be accurately displayed.

As described above, according to the month age display means 12 of the present embodiment, the month age is displayed by using the change in the relative position of the month plate 70 and the shadow plate 80, and therefore, the month age can be displayed with good visibility even in a narrow area. Further, since the relative positions of the moon plate 70 and the shadow plate 80 can be changed at every moment, there is no unnecessary movement for displaying the age of the month, and the age of the month can be continuously, stably, and efficiently displayed. Further, the moon plate 70 and the photographic plate 80 can be reversed, and the movement that is instantaneously moved as in the conventional case is not necessary, so that the load applied to the lunar age display means 12 can be reduced. Further, since a member having a thickness as in the conventional spherical body is not required, the reduction in size and thickness can be achieved.

As described above, according to the month age display means 12 of the present embodiment, even in a narrow area, the month age can be continuously, stably and efficiently displayed with good visibility, and the load applied to the month age display means 12 can be reduced, thereby further achieving downsizing and thinning.

Further, according to the movement 10 and the timepiece 1 provided with the age of month display mechanism 12, the age of month, which is information other than time, can be continuously, stably, and efficiently displayed with good visibility, and the movement and the timepiece with high quality and high performance with improved functionality can be provided.

Further, according to the month age display mechanism 12 of the present embodiment, since the moon plate 70 and the shadow plate 80 can be superimposed on each other, the month age can be efficiently displayed in a narrower area, and the occupied area required for displaying the month age can be reduced. Therefore, even the movement 10 having many timepiece parts can be easily incorporated into the month age display mechanism 12.

Further, when the age of the month is displayed based on a change in the state of stacking the moon plate 70 and the shadow plate 80, the entire moon plate 70 can be hidden in the back side of the shadow plate 80 (the crescent state shown in fig. 22) and the entire moon plate 70 can be exposed from the back side of the shadow plate 80 (the full moon state shown in fig. 30).

Further, since the rotation of the moon plate 70 and the shadow plate 80 can be controlled so as to be rotated (swung) in a reciprocating manner, even in a further narrow area, the moon plate 70 and the shadow plate 80 can be continuously moved and the age of the month can be accurately displayed.

Further, the moon plate 70 and the shadow plate 80 can be rotated back and forth in association with the time change with a simple configuration using only the moon cam 191 and the shadow cam 201, and thus the reliability of the operation and the simplification of the configuration can be achieved. Further, since the month wheel 180, the month cam 191, and the shadow cam 201 are disposed on the same axis, the entire month age display mechanism 12 can be compactly disposed in the planar direction.

Further, since the moon plate 70 is formed in a bright color such as yellow and the shadow plate 80 is formed in a dark color such as black, the age of the moon, such as the crescent moon (age 0), the full moon (age 14.8), the quarter moon (age 7.4), and the quarter moon (age 22.1), can be clearly recognized at a glance depending on the change in the state of stacking the moon plate 70 and the shadow plate 80.

Furthermore, since the month age display means 12 of the present embodiment includes the month age correcting means 13, when correction of the month age is necessary, the month age wheel 180 can be rotated and fed, and the relative positional relationship between the moon plate 70 and the photographic plate 80 can be corrected to correct the month age.

The description is made in detail.

When the age of the month is corrected, the operation button 308 shown in fig. 2 exposed to the side of the timepiece case 3 is pushed in. Thus, the operation pin 306 can be pushed in, and the month age correction lever 300 can be swung from the standby position P1 against the biasing force of the month age correction lever spring 310 to be positioned at the correction position P2 as shown in fig. 19 to 21. Accordingly, the first correction pawl 322 of the month age correction pawl 320 can be pressed into the tooth portion of the month age gear 182, and the month age wheel 180 can be rotated by a rotation amount corresponding to only two teeth in the counterclockwise direction opposite to the needle advance. This can forcibly rotate the month wheel 180 in the counterclockwise direction.

Therefore, the rotational position of the month wheel 180 can be corrected, the stacking state of the moon plate 70 and the photographic plate 80 can be adjusted, and the month age can be corrected reliably. In particular, since the age reading unit 183 is displayed on the upper surface of the age gear 182 at equal intervals in the circumferential direction, the age of the month can be corrected at the same time with the age reading unit 183 as a reference, and thus the correction can be easily performed.

Further, since the month wheel 180 is rotated in a direction opposite to the needle advance, the month age can be corrected without being affected by backlash in the meshing relationship between the month age wheel train 210 and the month wheel 180.

Further, the month wheel 180 is fed to rotate in the opposite direction to the hand motion, so that the fourth intermediate pinion 254 of the fourth intermediate wheel 250 is about to rotate in the opposite direction to the hand motion, but the fourth intermediate gear 253 is engaged with the other month wheel trains 210. As a result, the fourth intermediate pinion 254 of the fourth intermediate wheel 250 can be slid relative to the fourth intermediate gear 253, and the month age can be appropriately corrected.

Further, if the pushing of the operation button 308 is released, the month age correction lever 300 can be returned from the correction position P2 to the standby position P1 by the biasing force of the month age correction lever spring 310. At this time, the first correction claws 322 of the month age correction claws 320 press-fitted into the tooth portions of the month age gear 182 remain engaged with the tooth portions, and there is a possibility that the month age correction lever 300 is restored. However, since the age correcting pawl 320 can be separated from the month wheel 180 against the biasing force of the pawl return spring 330, when the month age correcting lever 300 is returned to the standby position P1, the month age correcting pawl 320 can be prevented from reversing the month wheel 180 toward the position before correction. Therefore, the corrected age of the month can be reliably maintained.

Further, if the month age correction lever 300 is returned to the standby position P1, the month age correction pawl 320 is returned to the attitude at the time of feed rotation by the biasing force from the pawl return spring 330, and thus the next month age correction can be prepared.

While the embodiments of the present invention have been described above, these embodiments are provided as examples and are not intended to limit the scope of the present invention. The embodiments may be implemented in various other ways, and various omissions, substitutions, and changes may be made without departing from the spirit of the invention. Examples, substantially the same examples, examples of equivalent ranges, and the like, which can be easily conceived by those skilled in the art, are included in the embodiments or the modifications thereof.

For example, in the above embodiment, a mechanical timepiece is exemplified, but the present invention is not limited to this case, and can be applied to a quartz timepiece, for example. In this case, for example, the wheels may be rotated by a driving force of a stepping motor.

Further, in the above-described embodiment, the case where the age of the month is displayed using the month plate and the shadow plate has been described as an example, but the information to be displayed is not limited to the age of the month. For example, the month age may be replaced with the month age, and various other information may be displayed. In these cases, the rotation speed of the rotation control unit, the shapes of the first cam and the second cam, and the like may be appropriately changed in accordance with the displayed information, in addition to the shapes, colors, patterns, and the like of the first display unit and the second display unit, for example.

Further, in the above embodiment, the month wheel train is constituted by the first intermediate wheel, the second intermediate wheel, the third intermediate wheel and the fourth intermediate wheel, but the month wheel train is not limited to this, and the month wheel train may be constituted arbitrarily as long as the month wheel can be rotated once in the profit-loss period of the month (about 29.5 days).

Further, in the above-described embodiment, the power source of the first power unit is a moon return spring, and the power source of the second power unit is a shadow return spring.

For example, as shown in fig. 38, the following month age display means 12 may be used: the one return spring 400 is provided as a common power source, and the rotational torque generated by the return spring 400 is transmitted to the moon wheel 110 and the shadow wheel 150 via the moon ring 120 and the shadow ring 160.

Description of the symbols

O1 … … first axis

O2 … … second axis

P1 … … Standby position

P2 … … correction of position

1 … … clock

10 … … movement

11 … … bottom plate

12 … … month age display mechanism (information display mechanism)

13 … … month age correcting mechanism

70 … … moon board (first display)

80 … … shadow mask (second display part)

90 … … first power part

91 … … second power part

95 … … rotation control part

180 … … moon age wheel (rotator)

190 … … first rotation control part

191 … … cam (first cam)

195 … … month backswing rod (first control rod)

200 … … second rotation control part

201 … … shadow cam (second cam)

205 … … shadow backswing rod (second control rod)

300 … … month age correcting rod

310 … … month age correcting rod spring (rod spring)

320 … … month age correcting paw (correcting paw)

330 … … pawl return spring.

Claims (12)

1. An information display mechanism is characterized by comprising:

a first display section rotatable about a first axis;

a first power part transmitting power to the first display part;

a second display unit that is rotatable about a second axis arranged to be a different axis from the first axis;

a second power part transmitting power to the second display part; and

a rotation control unit that controls rotation of the first display unit and the second display unit so that the first display unit and the second display unit rotate at a predetermined cycle,

the first display unit and the second display unit display information in cooperation based on a change in relative position between a rotational position of the first display unit about the first axis and a rotational position of the second display unit about the second axis.

2. The information display mechanism of claim 1,

the first display unit and the second display unit are disposed so as to be at different height positions in a thickness direction of the base plate,

the rotation control unit rotates the first display unit and the second display unit so as to overlap each other in a thickness direction of the base plate,

the first display unit and the second display unit display the information based on a change in relative position in a plan view viewed from a thickness direction of the base plate.

3. The information display mechanism of claim 2,

the rotation control unit rotates the first display unit and the second display unit in the middle of rotation of the first display unit and the second display unit so as to include at least: a hidden state in which the entire first display section is hidden behind the second display section when viewed in the thickness direction of the base plate; and an exposed state in which the entire first display unit is removed from the back side of the second display unit.

4. The information display mechanism of claim 3,

the rotation control unit includes:

a rotating body that rotates in accordance with a time change;

a first rotation control unit that controls rotation of the first display unit so that the first display unit is reciprocally rotated within a predetermined rotation angle range around the first axis in accordance with rotation of the rotating body; and

and a second rotation control unit that controls rotation of the second display unit so that the second display unit is rotated back and forth within a predetermined rotation angle range around the second axis in accordance with rotation of the rotating body.

5. The information display mechanism of claim 4,

the first rotation control unit includes a first cam that rotates in accordance with rotation of the rotating body, and a first lever that swings in accordance with rotation of the first cam to control rotation of the first display unit,

the second rotation control unit includes a second cam that rotates in accordance with rotation of the rotating body, and a second lever that swings in accordance with rotation of the second cam to control rotation of the second display unit.

6. The information display mechanism of claim 5,

the rotating body, the first cam, and the second cam are disposed on a common axis.

7. The information display mechanism of any one of claims 4 to 6,

the rotator is a month wheel which rotates for one circle in the profit and loss period of the month,

the first rotation control unit controls rotation so that the first display unit reciprocates once in accordance with one rotation of the rotating body,

the second rotation control unit controls rotation so that the second display unit reciprocates once in a phase different from that of the first display unit in accordance with one rotation of the rotating body,

the first display unit and the second display unit display the age of the month as the information based on a change in relative position corresponding to the phase difference.

8. The information display mechanism of any one of claims 4 to 7,

the first display unit is a moon plate which is round in plan view and simulates a moon,

the second display part is a photographic plate which is darker than the first display part in color and is circular in plan view,

the first display unit and the second display unit display the age of the month as the information.

9. The information display mechanism of claim 7 or 8,

the lunar age correction mechanism forcibly rotates the rotating body and corrects the relative positional relationship between the first display unit and the second display unit.

10. The information display mechanism of claim 9,

the age correction mechanism includes:

a month age correcting lever that is disposed adjacent to the rotating body and is swingable between a standby position and a correcting position about a swing axis;

a lever spring that biases the age correcting lever toward the standby position; and

a correction claw provided to be swingable on the month age correcting lever, the correction claw being configured to rotationally advance the rotating body by a predetermined rotational amount in one direction when the month age correcting lever is at the correction position,

a claw return spring is provided in the month age correcting lever, the claw return spring allowing the correcting claw to be separated from the rotating body when the month age correcting lever returns from the correcting position to the standby position, and returning to a posture at which the correcting claw is biased and the feed rotation is performed when the month age correcting lever returns to a position at which the correcting claw is separated from the rotating body.

11. A movement provided with the information display mechanism according to any one of claims 1 to 10.

12. A timepiece provided with the movement according to claim 11.

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