JP2013250091A - Electronic watch - Google Patents

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JP2013250091A
JP2013250091A JP2012123622A JP2012123622A JP2013250091A JP 2013250091 A JP2013250091 A JP 2013250091A JP 2012123622 A JP2012123622 A JP 2012123622A JP 2012123622 A JP2012123622 A JP 2012123622A JP 2013250091 A JP2013250091 A JP 2013250091A
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wheel
hole
detection
hour
hand
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JP5915385B2 (en
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Soya Masaki
崇也 正木
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Seiko Epson Corp
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Seiko Epson Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an electronic watch that can detect positions of hands and can be reduced in size.SOLUTION: An electronic watch comprises: a scoop wheel 28; a second wheel 84; a second pinion 82; a first motor; and a second motor 80. The scoop wheel 28 includes: one first through hole 282 formed at a position outside outer peripheries of the second wheel 84 and the second pinion 82; and twelve second through holes 283 formed on a concentric circle positioned at an inner side than the first through hole 282 with the same intervals. One third through hole 843 positioned on the concentric circle is formed in the second wheel 84, and a fourth through hole 823 positioned on the concentric circle is formed in the second pinion 82. A first light emission section 61A and a first light reception section disposed opposite to each other with the scoop wheel 28 interposed therebetween detect the first through hole 282. A second light emission section 62A and a second light reception section disposed opposite to each other with the scoop wheel 28, the second wheel 84 and the second pinion 82 interposed therebetween detect the second through holes 283, the third through hole 843 and the fourth through hole 823.

Description

本発明は、電子時計に関する。   The present invention relates to an electronic timepiece.

従来、指針を駆動させることで時刻を表示させる時計において、例えば、標準電波などに基づいて自動的に表示時刻を修正する電子時計が知られている。このような電子時計では、時刻修正を実施する際に、現在の指針位置を検出する必要がある。このような検出機能の一つとして、光センサーを用いる構成が従来知られている(例えば、特許文献1参照)。   2. Description of the Related Art Conventionally, an electronic timepiece that automatically corrects a display time based on a standard radio wave or the like is known as a timepiece that displays time by driving a pointer. In such an electronic timepiece, it is necessary to detect the current hand position when the time is corrected. As one of such detection functions, a configuration using an optical sensor is conventionally known (for example, see Patent Document 1).

特許文献1に記載の電子時計は、指針を駆動させる歯車の一部に孔部(貫通孔)を設け、光センサーにより孔部を検出することで、各指針が所定の指針位置にあることを検出する構成が採られている。
この電子時計は、従来の一般的な電子時計と同様に、秒針モーターと、時分針モーターと、暦モーターとを備える。
秒針モーターは、秒車および秒中間車で構成される秒針用輪列を介して、秒車に固定された秒針を駆動する。時分針モーターは、五番車、三番車、二番車、筒車等で構成される時分針用輪列を介して、筒車に固定された時針と、二番車に固定された分針とを駆動する。
暦モーターは、時分針用輪列や秒針用輪列とは別のカレンダー輪列を介して、日車(カレンダー車)を駆動する。
In the electronic timepiece described in Patent Document 1, a hole (through hole) is provided in a part of a gear that drives a pointer, and the hole is detected by an optical sensor, so that each pointer is at a predetermined pointer position. The structure to detect is taken.
This electronic timepiece includes a second hand motor, an hour / minute hand motor, and a calendar motor, as in a conventional general electronic timepiece.
The second hand motor drives a second hand fixed to the second wheel through a second hand wheel train composed of a second wheel and a second intermediate wheel. The hour / minute hand motor is connected to the hour hand fixed to the hour wheel and the minute hand fixed to the second wheel via an hour / minute hand train consisting of the fifth wheel, third wheel, second wheel, hour wheel, etc. And drive.
The calendar motor drives a date wheel (calendar wheel) via a calendar wheel train different from the wheel train for hour and minute hands and the train wheel for second hand.

特開2009−264885号公報JP 2009-264885 A

特許文献1に記載の電子時計は、秒針の位置検出を、秒中間車および秒中間車に噛合される秒検出車に形成した貫通孔を利用して行い、時針および分針の位置検出を、秒車、五番車、三番車、二番車、および筒車に形成した貫通孔を利用して行う構成である。
このように特許文献1に記載の電子時計では、秒針の位置検出のために、時計表面から見た平面視で、秒車や筒車と平面的に重ならない位置に、秒検出車および光センサーを設けていた。このため、時分針の位置検出用の光センサーと、秒針検出用の検出車や光センサーとを平面的に離れた位置に配置する必要があり、特に女性用の電子時計に求められる小型化の要望に応えることが難しいという課題があった。
In the electronic timepiece described in Patent Document 1, the position of the second hand is detected using a through hole formed in the second intermediate wheel and the second detection wheel meshed with the second intermediate wheel, and the position detection of the hour hand and the minute hand is performed. It is the structure performed using the through-hole formed in the car, the fifth wheel, the third wheel, the second wheel, and the hour wheel.
As described above, in the electronic timepiece described in Patent Document 1, in order to detect the position of the second hand, the second detection wheel and the optical sensor are located at positions that do not overlap with the second wheel or the hour wheel in a plan view as viewed from the surface of the timepiece. Was established. For this reason, it is necessary to dispose the optical sensor for detecting the position of the hour / minute hand, the detection wheel for detecting the second hand and the optical sensor in a plane, and the downsizing particularly required for an electronic timepiece for women. There was a problem that it was difficult to meet the demand.

本発明は、指針の位置を検出でき、かつ、小型化が容易な電子時計を提供することを目的とする。   An object of the present invention is to provide an electronic timepiece that can detect the position of a pointer and can be easily downsized.

本発明の電子時計は、時針と、分針と、秒針と、前記時針が固定された筒車と、前記分針が固定された二番車と、前記秒針が固定された秒車と、前記筒車を駆動する第一モーターと、前記二番車、および前記秒車を駆動する第二モーターと、を備え、前記筒車は、前記筒車を軸方向で見た時に、前記二番車、および前記秒車の外周よりも外側の位置に形成された1個の第一貫通孔と、前記第一貫通孔よりも内側の同心円上に等間隔で形成された12個の第二貫通孔と、を有し、前記筒車を挟んで、一方側には、前記第一貫通孔の移動軌跡上に向かって第一検出光を出射する第一発光部が配置され、他方側には、前記第一貫通孔を通過した前記第一検出光を受光する第一受光部が配置され、前記筒車を軸方向で見た時に、前記二番車には、前記同心円上に位置する1個の第三貫通孔が形成され、前記秒車には、前記同心円上に位置する1個の第四貫通孔が形成され、前記筒車、前記二番車、および前記秒車を挟んで、一方側には、前記同心円上に向かって第二検出光を出射する第二発光部が配置され、他方側には、前記第二貫通孔の内の1個と、前記第三貫通孔と、前記第四貫通孔とを通過した前記第二検出光を受光する第二受光部が配置されていることを特徴とする。   The electronic timepiece of the present invention includes an hour hand, a minute hand, a second hand, an hour wheel to which the hour hand is fixed, a second wheel to which the minute hand is fixed, a second wheel to which the second hand is fixed, and the hour wheel. A first motor that drives the second wheel, and a second motor that drives the second wheel, and the hour wheel when the hour wheel is viewed in the axial direction, and One first through-hole formed at a position outside the outer periphery of the second wheel, twelve second through-holes formed at equal intervals on a concentric circle inside the first through-hole, A first light-emitting portion that emits first detection light toward the movement trajectory of the first through hole is disposed on one side of the hour wheel, and the first light-emitting portion is disposed on the other side. A first light receiving portion that receives the first detection light that has passed through one through hole is arranged, and when the hour wheel is viewed in the axial direction, One third through hole located on the center circle is formed, and the second wheel is formed with one fourth through hole located on the concentric circle, and the hour wheel, the second wheel, and A second light-emitting portion that emits second detection light toward the concentric circle is disposed on one side across the second wheel, and one of the second through holes is disposed on the other side, A second light receiving portion that receives the second detection light that has passed through the third through hole and the fourth through hole is arranged.

本発明では、第一モーターが駆動することで、筒車と時針とが一体で回転する。筒車が所定の基準位置(第一基準位置)まで回転すると、筒車を挟んで対向して配置される第一発光部、および第一受光部によって、第一貫通孔が検出される。そして、第一貫通孔は、筒車を軸方向で見た時に、二番車、および秒車の外周よりも外側に形成されているので、第一検出光は、二番車、および秒車によって遮られずに第一受光部によって受光可能である。時針を回転させる筒車は、12時間毎に1回転するため、筒車に形成された第一貫通孔が検出されるか否かによって、時針の位置を確認することができる。例えば、時針が、12時(午前0時または午後0時)を指示する位置である時の筒車の位置を第一基準位置とした場合を例に挙げて説明する。この場合、第一基準位置に筒車が回転したときに第一検出光が通過するように第一貫通孔を形成すれば、第一受光部にて第一検出光が受光された時に、時針が午前0時または午後0時を示す位置となる。   In the present invention, when the first motor is driven, the hour wheel and the hour hand rotate together. When the hour wheel rotates to a predetermined reference position (first reference position), the first through hole is detected by the first light emitting part and the first light receiving part that are arranged to face each other with the hour wheel interposed therebetween. Since the first through hole is formed outside the outer periphery of the second wheel and the second wheel when the hour wheel is viewed in the axial direction, the first detection light is transmitted to the second wheel and the second wheel. It is possible to receive light by the first light receiving unit without being interrupted by. Since the hour wheel that rotates the hour hand rotates once every 12 hours, the position of the hour hand can be confirmed depending on whether or not the first through hole formed in the hour wheel is detected. For example, the case where the position of the hour wheel when the hour hand is a position indicating 12 o'clock (0:00 am or 0:00 pm) is set as the first reference position will be described as an example. In this case, if the first through hole is formed so that the first detection light passes when the hour wheel rotates at the first reference position, the hour hand is received when the first detection light is received by the first light receiving portion. Is the position indicating midnight or midnight.

また、本発明では、第二モーターが駆動することで、二番車と分針とが一体で回転し、連動して秒車と秒針とが一体で回転する。そして、二番車、および秒車の回転によって所定の基準位置(第二基準位置)まで移動した第三貫通孔、および第四貫通孔、並びに上記第一基準位置に移動した筒車の第二貫通孔が重なるタイミングで、これら貫通孔が、筒車、二番車、および秒車を挟んで対向して配置される第二発光部、および第二受光部によって検出される。
12個の第二貫通孔が形成されている筒車は、12時間毎に1回転するので、第二貫通孔は、第二発光部、および第二受光部に対向する位置に1時間毎に移動してくる。
1個の第三貫通孔が形成されている二番車は、分針を回転させるため、1時間ごとに1回転する。よって、第三貫通孔は、第二発光部、および第二受光部に対向する位置に1時間毎に移動してくる。
1個の第四貫通孔が形成されている秒車は、秒針を回転させるため、1分毎に1回転する。よって、第四貫通孔は、第二発光部、および第二受光部に対向する位置に1分毎に移動してくる。
例えば、分針および秒針が0分(60分)、0秒(60秒)を指示する位置の二番車、および秒車の位置を第二基準位置と設定した場合を例に挙げて説明する。時針が0時、1時、2時などの正時に移動し、二番車、および秒車が第二基準位置に回転したときに、第二貫通孔、第三貫通孔、および第四貫通孔が重なり合うように形成しておくことで、1時間に1回、これら貫通孔が重なり合う。このように各貫通孔が重なり合う時刻において、第二発光部から出射された第二検出光は、これら貫通孔を通過し、第二受光部にて受光される。このようにして、筒車、二番車、および秒車にそれぞれ形成された第二貫通孔、第三貫通孔、および第四貫通孔を検出することで、秒針、および分針の位置を1時間毎に検出可能である。
In the present invention, when the second motor is driven, the second wheel and the minute hand rotate together, and the second wheel and the second hand rotate together. The second through hole and the third through hole moved to the predetermined reference position (second reference position) by the rotation of the second wheel and the second wheel, the fourth through hole, and the second wheel of the hour wheel moved to the first reference position. At the timing when the through holes overlap, these through holes are detected by the second light emitting unit and the second light receiving unit that are arranged to face each other across the hour wheel, second wheel, and second wheel.
Since the hour wheel in which the 12 second through holes are formed rotates once every 12 hours, the second through hole is located at a position facing the second light emitting unit and the second light receiving unit every hour. Come on.
The second wheel & pinion in which one third through hole is formed rotates once every hour in order to rotate the minute hand. Thus, the third through hole moves every hour to a position facing the second light emitting unit and the second light receiving unit.
The second wheel in which one fourth through hole is formed rotates once every minute to rotate the second hand. Thus, the fourth through hole moves every minute to a position facing the second light emitting unit and the second light receiving unit.
For example, a case where the minute hand and the second hand are set to the second reference position where the second wheel and the position of the second wheel at a position indicating 0 minute (60 minutes) and 0 second (60 seconds) are set as the second reference position will be described as an example. The second through hole, the third through hole, and the fourth through hole when the hour hand moves on the hour such as 0, 1, 2 and the second wheel and the second wheel rotate to the second reference position. By forming them so as to overlap each other, these through holes overlap each other once an hour. In this way, at the time when the through holes overlap, the second detection light emitted from the second light emitting unit passes through the through holes and is received by the second light receiving unit. In this way, by detecting the second through hole, the third through hole, and the fourth through hole formed in the hour wheel, the second wheel, and the second wheel, respectively, the positions of the second hand and the minute hand are set to one hour. It can be detected every time.

したがって、本発明では、筒車、二番車、および秒車にそれぞれ形成された第一貫通孔、第二貫通孔、第三貫通孔、および第四貫通孔を検出することで、時針、分針、および秒針の位置を検出可能である。そして、第一発光部および第二発光部と、第一受光部および第二受光部とは、筒車を軸方向で見た平面視で、筒車の平面内に配置することができる。従って、筒車と平面的に重ならない位置に秒検出車や、秒針の位置検出用の発光部および受光部を設ける前記特許文献1の電子時計に比べて、電子時計の平面サイズを小さくできる。
また、時針、分針、および秒針の位置を検出するために別途専用の検出車(例えば、秒中間車等)を設ける場合に比べて、部品点数を少なくできる。
ゆえに、本発明によれば、時針、分針、秒針の各指針の位置を検出でき、かつ、平面サイズを小さくでき、女性用としても利用可能な小型の電子時計を提供することができる。
Therefore, in the present invention, the hour hand, the minute hand are detected by detecting the first through hole, the second through hole, the third through hole, and the fourth through hole respectively formed in the hour wheel, the second wheel, and the second wheel. , And the position of the second hand. And a 1st light emission part, a 2nd light emission part, a 1st light-receiving part, and a 2nd light-receiving part can be arrange | positioned in the plane of an hour wheel by the planar view which looked at the hour wheel in the axial direction. Therefore, the plane size of the electronic timepiece can be reduced as compared with the electronic timepiece of Patent Document 1 in which the second detection wheel and the light emitting unit and the light receiving unit for detecting the position of the second hand are provided at positions that do not overlap with the hour wheel.
In addition, the number of parts can be reduced as compared with a case where a dedicated detection wheel (for example, a second intermediate wheel) is separately provided for detecting the positions of the hour hand, the minute hand, and the second hand.
Therefore, according to the present invention, it is possible to provide a small electronic timepiece that can detect the positions of the hands of the hour hand, the minute hand, and the second hand, can reduce the plane size, and can be used for women.

本発明では、カレンダー情報を表示するカレンダー車と、前記筒車から前記カレンダー車まで駆動力を伝達し、かつ、検出車を有する駆動輪列と、を備え、前記検出車には、第五貫通孔が形成され、前記検出車を挟んで、一方側には、前記第五貫通孔の移動軌跡上に向かって第三検出光を出射する第三発光部が配置され、他方側には、前記第五貫通孔を通過する前記第三検出光を受光する第三受光部が配置され、前記第五貫通孔は、前記検出車が回転して前記第三発光部に対向する位置に24時間毎に移動し、同時に前記筒車の前記第一貫通孔は、前記第一発光部に対向する位置に移動することが好ましい。   In the present invention, a calendar wheel for displaying calendar information, and a driving wheel train that transmits a driving force from the hour wheel to the calendar wheel and has a detection wheel, the detection vehicle has a fifth penetration. A hole is formed, and a third light-emitting portion that emits third detection light toward the movement trajectory of the fifth through hole is disposed on one side across the detection wheel, and the other side A third light receiving portion for receiving the third detection light passing through the fifth through hole is disposed, and the fifth through hole is arranged at a position facing the third light emitting portion by rotation of the detection wheel every 24 hours. It is preferable that the first through hole of the hour wheel moves to a position facing the first light emitting portion at the same time.

本発明では、第一モーターが駆動することで、筒車と駆動輪列とを介してカレンダー車が回転する。そのため、筒車と、駆動輪列中の検出車とは、連動して回転する。検出車の第五貫通孔は、筒車が24時間分回転する毎に、当該筒車に連動して検出車が回転移動して第三発光部に対向する位置に形成されている。そのため、第五貫通孔は、第三発光部と第三受光部とによって24時間毎に検出される。また、第五貫通孔が第三発光部に対向する位置に移動したのと同時に筒車の第一貫通孔は、第一発光部に対向する位置に移動する。
この第五貫通孔が検出される検出車の回転位置をAM/PM基準位置とし、筒車の第一基準位置と関連付けておくことで、時針の位置が午前であるか午後であるかを確認できるようになる。例えば、上記第一基準位置を午前0時または午後0時に設定し、上記AM/PM基準位置を午前0時に設定した場合を挙げて説明する。筒車が第一基準位置に回転した時は、時針が午前0時または午後0時を示す。時針が午前0時を示した時は、検出車は、AM/PM基準位置に回転し、第五貫通孔が検出される。一方、時針が午後0時を示す時は、AM/PM基準位置に到達するまであと12時間分、検出車の回転が不足しているので、第五貫通孔は、検出されない。つまり、第五貫通孔が、AM/PM基準位置まで回転したか否かを検出することで、午前0時であるか、午後0時であるかを確認できる。
また、本発明では、検出車が、カレンダー車を駆動する駆動輪列に設けられているので、専用の検出車を設ける必要がない。すなわち、本発明によれば、駆動輪列に設けられる歯車を検出車としても兼用できるので、駆動輪列とは別に専用の検出車を設ける場合に比べて、部品点数を少なくでき、カレンダー機構を小型化できる。さらに、カレンダー車を第一モーターで駆動させることができるので、従来のようなカレンダー車を駆動させるための暦モーターを設ける必要がない。
ゆえに、本発明によれば、カレンダー機構を備える電子時計においても、時針、分針、秒針の各指針の位置を検出に加え、時針の表示が午前であるか午後であるかを判別できる、小型の電子時計を提供することができる。
In the present invention, when the first motor is driven, the calendar wheel rotates via the hour wheel and the drive wheel train. Therefore, the hour wheel and the detection wheel in the drive wheel train rotate in conjunction with each other. The fifth through hole of the detection wheel is formed at a position facing the third light-emitting portion by rotating the detection wheel in conjunction with the hour wheel every time the hour wheel rotates for 24 hours. Therefore, the fifth through hole is detected every 24 hours by the third light emitting unit and the third light receiving unit. In addition, the first through hole of the hour wheel moves to a position facing the first light emitting part at the same time when the fifth through hole moves to a position facing the third light emitting part.
The rotation position of the detection wheel where the fifth through hole is detected is set as the AM / PM reference position, and it is correlated with the first reference position of the hour wheel to confirm whether the hour hand is in the morning or the afternoon. become able to. For example, the case where the first reference position is set to midnight or midnight and the AM / PM reference position is set to midnight will be described. When the hour wheel rotates to the first reference position, the hour hand indicates midnight or midnight. When the hour hand indicates midnight, the detection wheel rotates to the AM / PM reference position and the fifth through hole is detected. On the other hand, when the hour hand indicates midnight, the fifth through hole is not detected because the detection wheel is insufficiently rotated for another 12 hours until the AM / PM reference position is reached. That is, by detecting whether or not the fifth through hole has rotated to the AM / PM reference position, it can be confirmed whether it is midnight or midnight.
In the present invention, since the detection wheel is provided in the drive wheel train that drives the calendar wheel, it is not necessary to provide a dedicated detection wheel. That is, according to the present invention, the gear provided in the drive wheel train can also be used as a detection wheel, so that the number of parts can be reduced compared to the case where a dedicated detection wheel is provided separately from the drive wheel train, and the calendar mechanism is Can be downsized. Furthermore, since the calendar wheel can be driven by the first motor, there is no need to provide a calendar motor for driving the calendar wheel as in the prior art.
Therefore, according to the present invention, even in an electronic timepiece having a calendar mechanism, in addition to detecting the positions of the hands of the hour hand, the minute hand, and the second hand, it is possible to determine whether the hour hand is displayed in the morning or in the afternoon. An electronic watch can be provided.

本発明の実施形態に係る電子時計を示す平面図。The top view which shows the electronic timepiece which concerns on embodiment of this invention. 前記電子時計内部の概略を示す斜視図。The perspective view which shows the outline inside the said electronic timepiece. 前記電子時計内部を裏蓋側から見たときの概略を示す斜視図。The perspective view which shows the outline when the inside of the said electronic timepiece is seen from the back cover side. 前記電子時計のセンサー基板と回路基板との間に配置される駆動輪列、および秒分輪列を示す分解斜視図。FIG. 3 is an exploded perspective view showing a driving wheel train and a second minute wheel train disposed between a sensor board and a circuit board of the electronic timepiece. 前記電子時計の日車を回路基板側からセンサー基板側に向かって見上げた状態を示す分解斜視図。The disassembled perspective view which shows the state which looked up the date dial of the said electronic timepiece toward the sensor board | substrate side from the circuit board side. 前記電子時計内部の一部を拡大して概略を示す平面図。FIG. 2 is a plan view schematically showing an enlarged part of the inside of the electronic timepiece. 前記電子時計内部を裏蓋側から見たときの駆動輪列を構成する歯車の配置関係を示す分解斜視図。FIG. 3 is an exploded perspective view showing an arrangement relationship of gears constituting a drive wheel train when the inside of the electronic timepiece is viewed from the back cover side. 前記電子時計内部を裏蓋側から見たときの秒分輪列を構成する歯車の配置関係を示す分解斜視図。FIG. 3 is an exploded perspective view showing an arrangement relationship of gears constituting a second minute wheel train when the inside of the electronic timepiece is viewed from the back cover side. 前記電子時計のセンサー基板、および駆動輪列の配置関係を示す斜視図。The perspective view which shows the arrangement | positioning relationship of the sensor board | substrate of the said electronic timepiece, and a driving wheel train. 前記電子時計のセンサー基板、および駆動輪列の配置関係を示す側面図。The side view which shows the arrangement | positioning relationship of the sensor board | substrate of the said electronic timepiece, and a driving wheel train. 前記電子時計の指針の位置検出処理を示すフローチャート。The flowchart which shows the position detection process of the hand of the said electronic timepiece.

本発明の一実施形態を図面に基づいて説明する。
電子時計1は、図1に示すように、時針11、分針12、秒針13、文字板14を備える。さらに、電子時計1は、文字板14に形成された日窓15からカレンダー情報としての日付を表示するカレンダー車としての日車21を備える。
この電子時計1は、図2および図3に示す時計本体10と、時計本体10を収容する外装ケース16(図1参照)とで概略構成され、利用者が腕に装着して使用する腕時計タイプとされている。また、電子時計1は、時刻情報が重畳された外部信号としての標準電波を受信し、受信した時刻情報に基づいて時針11、分針12、秒針13で指示される表示時刻を修正する針位置検出機能付きの電波修正時計である。
An embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the electronic timepiece 1 includes an hour hand 11, a minute hand 12, a second hand 13, and a dial 14. Furthermore, the electronic timepiece 1 includes a date wheel 21 as a calendar wheel for displaying a date as calendar information from a date window 15 formed on the dial 14.
This electronic timepiece 1 is composed of a timepiece main body 10 shown in FIGS. 2 and 3 and an outer case 16 (see FIG. 1) for housing the timepiece main body 10, and is a wristwatch type that is used by being worn on a wrist by a user. It is said that. In addition, the electronic timepiece 1 receives a standard radio wave as an external signal on which time information is superimposed, and detects a hand position that corrects the display time indicated by the hour hand 11, the minute hand 12, and the second hand 13 based on the received time information. This is a radio-controlled watch with functions.

〔時計本体の構成〕
時計本体10は、図2に示すように、ムーブメント2と、文字板受けリング部材3と、を備える。電子時計1は、図示しない太陽電池を備え、この太陽電池で発電された電力を図3に示す二次電池17に充電して用いるものである。この太陽電池の表側には、透光性の文字板14が配置される。
[Configuration of the watch body]
As shown in FIG. 2, the timepiece main body 10 includes a movement 2 and a dial receiving ring member 3. The electronic timepiece 1 includes a solar battery (not shown), and uses the power generated by the solar battery by charging the secondary battery 17 shown in FIG. A translucent dial 14 is disposed on the front side of the solar cell.

ムーブメント2は、地板20(図2,図3参照)、センサー基板4(図4参照)および回路基板5(図4参照)を備える。センサー基板4と回路基板5とは、電子時計1内部の地板20を挟んで配置される。センサー基板4と回路基板5とには、図4および図5に示されるように、第一検出部6A,第二検出部6B,第三検出部6Cが設けられている。検出部6A,6B,6Cは、ムーブメント2に組み込まれた歯車(検出車25等)の回転位置を検出し、それに基づいて時針11、分針12、秒針13の位置を検出し、並びに時針11の示す時刻が午前であるか午後であるかの検出を行う。本実施形態において、第一検出部6Aは、時針11の位置を検出するために用いられ、第二検出部6Bは、分針12および秒針13の位置を検出するために用いられる。また、第三検出部6Cは、時針11の示す時刻が午前と午後のどちらに対応したものであるか検出するために用いられる。検出部6A,6B,6Cの詳細は、後述する。
ムーブメント2には、図3,図7,図8に示す、第一モーター70および第二モーター80が組み込まれている。第一モーター70および第二モーター80として、本実施形態では、ステッピングモーターを用いる。
その他のムーブメント2の構成は、一般的な構成を採用しているため、説明を簡略にする。また、裏蓋も一般的な構成であるため、説明を省略する。
The movement 2 includes a ground plane 20 (see FIGS. 2 and 3), a sensor board 4 (see FIG. 4), and a circuit board 5 (see FIG. 4). The sensor board 4 and the circuit board 5 are arranged with the ground plate 20 inside the electronic timepiece 1 interposed therebetween. As shown in FIGS. 4 and 5, the sensor board 4 and the circuit board 5 are provided with a first detection unit 6A, a second detection unit 6B, and a third detection unit 6C. The detection units 6A, 6B, and 6C detect the rotational positions of gears (detection wheel 25 and the like) incorporated in the movement 2, detect the positions of the hour hand 11, the minute hand 12, and the second hand 13 based on the rotational positions, and the hour hands 11 It is detected whether the indicated time is morning or afternoon. In the present embodiment, the first detection unit 6A is used to detect the position of the hour hand 11, and the second detection unit 6B is used to detect the positions of the minute hand 12 and the second hand 13. The third detector 6C is used to detect whether the time indicated by the hour hand 11 corresponds to morning or afternoon. Details of the detection units 6A, 6B, and 6C will be described later.
The movement 2 incorporates a first motor 70 and a second motor 80 shown in FIGS. 3, 7, and 8. In this embodiment, stepping motors are used as the first motor 70 and the second motor 80.
Since the structure of the other movement 2 employs a general structure, the description is simplified. Moreover, since the back cover is also a general structure, description is abbreviate | omitted.

地板20の文字板14側には、図2に示すようにカレンダー車としての日車21が配置されている。日車21の内周には、センサー基板4が配置されている。地板20の裏蓋側(裏側)には、回路基板5が配置されている。
日車21には、日付を表す数字(図1では、「1」のみが表示されている。)が印刷されており、当該数字を文字板14の日窓15から露出させることで日付が表示される。
日車21の内周面には駆動歯211が形成されている。駆動歯211には、地板20に設けられた日ジャンパー29が係合している。日ジャンパー29は、弾性部材で構成され、日車21が1ピッチ分回転された際に、その回転後の位置を日ジャンパー29の弾性力によって規制する。
A date wheel 21 as a calendar wheel is arranged on the dial 14 side of the main plate 20 as shown in FIG. A sensor board 4 is disposed on the inner periphery of the date dial 21. The circuit board 5 is arranged on the back cover side (back side) of the base plate 20.
The date wheel 21 is printed with a number representing the date (in FIG. 1, only “1” is displayed), and the date is displayed by exposing the number from the date window 15 of the dial 14. Is done.
Drive teeth 211 are formed on the inner peripheral surface of the date dial 21. A date jumper 29 provided on the main plate 20 is engaged with the drive teeth 211. The date jumper 29 is formed of an elastic member, and regulates the position after the rotation by the elastic force of the date jumper 29 when the date indicator 21 is rotated by one pitch.

図6は、時計内部の一部を拡大して概略を示す平面図であり、日車21や時針11を駆動させる駆動輪列22が示されている。図7には、裏蓋側から見た駆動輪列22の概略構成が分解斜視図で示されている。図8には、第二モーター80からの駆動力を分針12や秒針13に伝達させる秒分輪列80Aを裏蓋側から見た概略分解斜視図が示されている。なお、図7および図8においては、説明の便宜上、地板20等の部材を省略し、また、複数の歯車の一部は、互いに離間させた状態で示されている。
駆動輪列22および秒分輪列80Aは、図4に示すように、センサー基板4と回路基板5との間に配置される。
駆動輪列22は、図4や図7に示すように、第一中間車71、第二中間車72、第三中間車73、筒車28、第四中間車27、第五中間車26、検出車25、日回し中間車24と、および駆動車としての日回し車23で構成され、これらの歯車は、互いに連動して回転する。
秒分輪列80Aは、図3,図4,図8に示すように、五番車81、秒車(四番車)82、三番車83、および二番車84で構成され、これらの歯車は、互いに連動して回転する。
FIG. 6 is a plan view schematically showing an enlarged part of the inside of the timepiece, and shows a driving wheel train 22 for driving the date wheel 21 and the hour hand 11. FIG. 7 is an exploded perspective view showing a schematic configuration of the drive wheel train 22 as viewed from the back cover side. FIG. 8 shows a schematic exploded perspective view of the second minute wheel train 80A for transmitting the driving force from the second motor 80 to the minute hand 12 and the second hand 13 as seen from the back cover side. 7 and 8, for convenience of explanation, members such as the ground plane 20 are omitted, and some of the plurality of gears are shown separated from each other.
The drive wheel train 22 and the second minute train wheel 80A are arranged between the sensor board 4 and the circuit board 5, as shown in FIG.
As shown in FIGS. 4 and 7, the drive wheel train 22 includes a first intermediate wheel 71, a second intermediate wheel 72, a third intermediate wheel 73, an hour wheel 28, a fourth intermediate wheel 27, a fifth intermediate wheel 26, A detection wheel 25, a date indicator driving intermediate wheel 24, and a date indicator driving wheel 23 as a driving vehicle are constituted, and these gears rotate in conjunction with each other.
As shown in FIGS. 3, 4, and 8, the second minute wheel train 80 </ b> A includes a fifth wheel 81, a second wheel (fourth wheel) 82, a third wheel 83, and a second wheel 84. The gears rotate in conjunction with each other.

まず、駆動輪列22について説明する。
日車21を駆動させる駆動力は、第一モーター70から駆動輪列22を介して伝達される。本実施形態では、第一モーター70からの駆動力が、まず、第一中間車71に伝達され、この第一中間車71から順に、第二中間車72、第三中間車73、筒車28、第四中間車27、第五中間車26、検出車25、日回し中間車24、日回し車23を経て日車21まで伝達される。
First, the drive wheel train 22 will be described.
A driving force for driving the date dial 21 is transmitted from the first motor 70 via the driving wheel train 22. In the present embodiment, the driving force from the first motor 70 is first transmitted to the first intermediate wheel 71, and in order from the first intermediate wheel 71, the second intermediate wheel 72, the third intermediate wheel 73, the hour wheel 28. , The fourth intermediate wheel 27, the fifth intermediate wheel 26, the detection wheel 25, the date turning intermediate wheel 24, and the date turning wheel 23 are transmitted to the date indicator 21.

第一中間車71は、図7に示すように、第一モーター70のローター701に一体的に形成されたロータカナ702に噛合する歯車711と、カナとを備える。第一中間車71には、歯車711の厚さ方向で貫通する貫通孔713が形成されている。
第二中間車72は、第一中間車71のカナに噛合する歯車721と、カナ722とを備える。第二中間車72には、歯車721の厚さ方向で貫通する貫通孔723が形成されている。
第三中間車73は、第二中間車72のカナ722に噛合する歯車731と、カナ732とを備える。第三中間車73には、歯車731の厚さ方向で貫通する貫通孔733が2箇所に形成されている。
As shown in FIG. 7, the first intermediate wheel 71 includes a gear 711 that meshes with a rotor kana 702 formed integrally with the rotor 701 of the first motor 70, and a pinion. The first intermediate wheel 71 is formed with a through hole 713 that penetrates in the thickness direction of the gear 711.
The second intermediate wheel 72 includes a gear 721 that meshes with the pinion of the first intermediate wheel 71 and a pinion 722. The second intermediate wheel 72 is formed with a through hole 723 that penetrates in the thickness direction of the gear 721.
The third intermediate wheel 73 includes a gear 731 that meshes with the pinion 722 of the second intermediate wheel 72 and a pinion 732. The third intermediate wheel 73 is formed with two through holes 733 penetrating in the thickness direction of the gear 731.

筒車28は、第三中間車73のカナ732、および第四中間車27の歯車271と噛合する。筒車28は、図4,10に示すように、電子時計1の厚さ方向において日回し中間車24よりも裏蓋側に配置されている。すなわち、電子時計1の厚さ方向において、センサー基板4と筒車28との間に、筒車28から日回し中間車24や日車21の高さ位置までの空間が設けられている。
筒車28には、第一モーター70からの駆動力が上述の中間歯車71,72,73を介して伝達される。また、筒車28には、時針11が固定され、筒車28が回転することで、時針11も回転する。つまり、第一モーター70は、時針11を駆動させるとともに、駆動輪列22を介して日車21を駆動させる。
本実施形態では、検出車25は、48時間毎に1回転し、日回し中間車24は、24時間毎に1回転する。また、筒車28および時針11は、12時間毎に1回転する。
The hour wheel 28 meshes with the pinion 732 of the third intermediate wheel 73 and the gear 271 of the fourth intermediate wheel 27. As shown in FIGS. 4 and 10, the hour wheel 28 is disposed closer to the back cover than the intermediate date wheel 24 in the thickness direction of the electronic timepiece 1. That is, in the thickness direction of the electronic timepiece 1, a space from the hour wheel 28 to the height position of the intermediate wheel 24 and the date wheel 21 is provided between the sensor substrate 4 and the hour wheel 28.
A driving force from the first motor 70 is transmitted to the hour wheel 28 via the above-described intermediate gears 71, 72, 73. In addition, the hour hand 11 is fixed to the hour wheel 28, and the hour hand 11 also rotates as the hour wheel 28 rotates. That is, the first motor 70 drives the hour hand 11 and drives the date wheel 21 via the drive wheel train 22.
In the present embodiment, the detection wheel 25 rotates once every 48 hours, and the date turning intermediate wheel 24 rotates once every 24 hours. Further, the hour wheel 28 and the hour hand 11 rotate once every 12 hours.

図6および図7に示されているように、筒車28には、筒車28の回転位置を検出するための第一貫通孔282が設けられている。第一貫通孔282も、筒車28の厚さ方向で貫通し、センサー基板4と回路基板5とに設けられた第一検出部6Aによって検出される。この第一貫通孔282が第一検出部6Aによって検出されるときの筒車28の回転位置が、前述の第一基準位置とされる。
筒車28は、二番車84および秒車82よりも大きな直径を有しており、第一貫通孔282が設けられている位置は、筒車28を、その軸方向で見たときに、二番車84および秒車82の外周よりも外側である。筒車28の軸方向で見たときとは、筒車28、二番車84および秒車82を、それらの中心軸を合わせて重ねて平面視した場合でもある。
図6および図7に示されているように、筒車28の第一貫通孔282よりも内側には、12個の第二貫通孔283が形成されている。第二貫通孔283も、筒車28の厚さ方向で貫通する。これらの第二貫通孔283は、筒車28を平面視してその中心に対して等角度(30度)毎に形成されている。すなわち、第二貫通孔283は、筒車28を、その軸方向で見たときに、第一貫通孔282よりも内側の同心円上に等間隔で形成されている。
As shown in FIGS. 6 and 7, the hour wheel 28 is provided with a first through hole 282 for detecting the rotational position of the hour wheel 28. The first through hole 282 also penetrates in the thickness direction of the hour wheel 28 and is detected by the first detection unit 6 </ b> A provided in the sensor board 4 and the circuit board 5. The rotational position of the hour wheel 28 when the first through hole 282 is detected by the first detector 6A is set as the first reference position described above.
The hour wheel 28 has a larger diameter than the second wheel 84 and the second wheel 82, and the position where the first through hole 282 is provided is when the hour wheel 28 is viewed in its axial direction. It is outside the outer periphery of the center wheel & pinion 84 and second wheel 82. When viewed in the axial direction of the hour wheel 28, the hour wheel 28, the second wheel & pinion 84, and the second wheel 82 are also viewed in plan with their central axes aligned.
As shown in FIGS. 6 and 7, twelve second through holes 283 are formed inside the first through hole 282 of the hour wheel 28. The second through hole 283 also penetrates in the thickness direction of the hour wheel 28. These second through holes 283 are formed at equal angles (30 degrees) with respect to the center of the hour wheel 28 in plan view. That is, the second through holes 283 are formed at equal intervals on a concentric circle inside the first through hole 282 when the hour wheel 28 is viewed in the axial direction.

第四中間車27は、筒車28と噛合する歯車271と、第五中間車26と噛合するカナ272とを備える。歯車271は、カナ272よりも裏蓋側に設けられている。
第五中間車26は、第四中間車27のカナ272と噛合する歯車261と、検出車25と噛合するカナ262とを備える。歯車261は、カナ262よりも文字板側に設けられている。
The fourth intermediate wheel 27 includes a gear 271 that meshes with the hour wheel 28 and a pinion 272 that meshes with the fifth intermediate wheel 26. The gear 271 is provided on the back cover side with respect to the pinion 272.
The fifth intermediate wheel 26 includes a gear 261 that meshes with the pinion 272 of the fourth intermediate wheel 27 and a pinion 262 that meshes with the detection wheel 25. The gear 261 is provided closer to the dial plate than the pinion 262.

検出車25は、日回し中間車24の裏蓋側に設けられたカナ242、および第五中間車26の裏蓋側に設けられたカナ262と噛合する。検出車25は、本実施形態では、平歯車である。そして、検出車25は、本実施形態では、図9,10に示すように、電子時計1の厚さ方向において日回し中間車24よりも内側に配置されている。すなわち、電子時計1の厚さ方向において、検出車25の文字板14側(表側)には、検出車25から日回し中間車24や日車21の高さ位置までの空間が設けられている。
検出車25には、検出車25の回転位置を第三検出部6Cに検出させるための第五貫通孔251が設けられている。この第五貫通孔251が第三検出部6Cに検出されるときの検出車25の回転位置が、前述のAM/PM基準位置とされる。この第五貫通孔251は、検出車25の厚さ方向で貫通する貫通孔である。検出車25には、図6に示すように、第五貫通孔251が2つ設けられている。2つの第五貫通孔251は、検出車25の回転軸252方向で見た時に、当該回転軸252の位置を挟んで配置されている。そして、検出車25がAM/PM基準位置に回転すると、第五貫通孔251は、センサー基板4と回路基板5とに設けられ、検出車25を挟んで互いに対向する第三検出部6Cによって検出される。
The detection wheel 25 meshes with a pinion 242 provided on the back cover side of the intermediate date wheel 24 and a pinion 262 provided on the back cover side of the fifth intermediate wheel 26. In the present embodiment, the detection wheel 25 is a spur gear. And in this embodiment, the detection wheel 25 is arrange | positioned inside the intermediate date wheel 24 in the thickness direction of the electronic timepiece 1 as shown in FIG. That is, in the thickness direction of the electronic timepiece 1, a space from the detection wheel 25 to the height position of the intermediate wheel 24 and the date wheel 21 is provided on the dial 14 side (front side) of the detection wheel 25. .
The detection wheel 25 is provided with a fifth through hole 251 for allowing the third detection portion 6C to detect the rotational position of the detection wheel 25. The rotational position of the detection wheel 25 when the fifth through hole 251 is detected by the third detection unit 6C is set as the above-described AM / PM reference position. The fifth through hole 251 is a through hole penetrating in the thickness direction of the detection wheel 25. As shown in FIG. 6, the detection wheel 25 is provided with two fifth through holes 251. The two fifth through holes 251 are arranged with the position of the rotation shaft 252 sandwiched when viewed in the direction of the rotation shaft 252 of the detection wheel 25. When the detection wheel 25 is rotated to the AM / PM reference position, the fifth through hole 251 is provided in the sensor board 4 and the circuit board 5 and is detected by the third detection unit 6C facing each other with the detection wheel 25 interposed therebetween. Is done.

日回し中間車24は、日回し車23を介して日車21に駆動力を伝達する。日回し中間車24は、日回し車23と噛合する歯車241と、この歯車241の裏蓋側に設けられたカナ242とを備える。カナ242は、検出車25と噛合する。日回し中間車24の歯車241は、本実施形態では、電子時計1の厚さ方向において日車21と同じ高さに配置されている。
日回し車23は、日車21の駆動歯211と噛合し、日車21に駆動力を伝達する。日回し車23は、本実施形態では、電子時計1の厚さ方向において日車21と同じ高さに配置されている。
本実施形態では、図2,4,6に示すように、日回し車23と日回し中間車24とでゼネバ機構が構成されている。
The date turning intermediate wheel 24 transmits driving force to the date indicator 21 via the date turning wheel 23. The intermediate date driving wheel 24 includes a gear 241 that meshes with the date driving wheel 23, and a pinion 242 provided on the back cover side of the gear 241. The kana 242 meshes with the detection wheel 25. In this embodiment, the gear 241 of the date indicator driving intermediate wheel 24 is disposed at the same height as the date indicator 21 in the thickness direction of the electronic timepiece 1.
The date indicator driving wheel 23 meshes with the drive teeth 211 of the date indicator 21 and transmits the driving force to the date indicator 21. In this embodiment, the date indicator driving wheel 23 is arranged at the same height as the date indicator 21 in the thickness direction of the electronic timepiece 1.
In the present embodiment, as shown in FIGS. 2, 4, and 6, the date driving wheel 23 and the date driving intermediate wheel 24 constitute a Geneva mechanism.

次に、秒分輪列80Aについて説明する。
図8に示されているように、筒車28の裏蓋側には、分針12を回転させる二番車84と、秒針13を回転させる秒車82が配置されている。第二モーター80からの駆動力が、まず、五番車81に伝達され、この五番車81から順に、秒車82、三番車83、二番車84まで伝達される。センサー基板4と回路基板5との間には、センサー基板4側から、筒車28、二番車84、三番車83、五番車81、秒車82の順に配置され、これらの内、筒車28、二番車84および秒車82は、同軸上に配置されている。
Next, the second minute wheel train 80A will be described.
As shown in FIG. 8, a second wheel 84 for rotating the minute hand 12 and a second wheel 82 for rotating the second hand 13 are disposed on the back cover side of the hour wheel 28. The driving force from the second motor 80 is first transmitted to the fifth wheel 81, and from the fifth wheel 81 to the second wheel 82, the third wheel 83, and the second wheel 84 in order. Between the sensor board 4 and the circuit board 5, from the sensor board 4 side, the hour wheel 28, the second wheel 84, the third wheel 83, the fifth wheel 81, and the second wheel 82 are arranged in this order. The hour wheel 28, the second wheel & pinion 84, and the second wheel 82 are arranged on the same axis.

五番車81は、図3および図8に示すように、第二モーター80のローター801に一体的に形成されたロータカナ802に噛合する歯車811と、歯車811の裏蓋側に形成された五番カナ812とを備える。五番車81には、歯車811の厚さ方向で貫通する貫通孔813が1個形成されている。
秒車82は、五番車81の五番カナ812に噛合する歯車821と、この歯車821の文字板側に形成された四番カナと、を備える。秒車82には、歯車821の厚さ方向で貫通する第四貫通孔823が1個形成されている。第四貫通孔823は、筒車28を軸方向で見た時に、第二貫通孔283が形成された同心円上に位置する1個の貫通孔であり、秒車82の回転位置を検出するために利用される。
三番車83は、秒車82の四番カナに噛合する歯車831と、この歯車831の文字板側に形成された三番カナと、を備える。三番車83には、歯車831の厚さ方向で貫通する貫通孔833が1個形成されている。
二番車84は、三番車83の三番カナに噛合する歯車841を備え、二番車84には、厚さ方向で貫通する第三貫通孔843が1個形成されている。第三貫通孔843は、筒車28を軸方向で見た時に、第二貫通孔283が形成された同心円上に位置する1個の貫通孔であり、二番車84の回転位置を検出するために利用される。
As shown in FIGS. 3 and 8, the fifth wheel & pinion 81 includes a gear 811 meshing with a rotor kana 802 formed integrally with the rotor 801 of the second motor 80, and a fifth wheel 81 formed on the back cover side of the gear 811. A watch guard 812 is provided. The fifth wheel & pinion 81 is formed with one through hole 813 that penetrates in the thickness direction of the gear 811.
The second wheel 82 includes a gear 821 that meshes with the fifth pinion 812 of the fifth wheel 81 and a fourth pinion formed on the dial side of the gear 821. The second wheel 82 is provided with one fourth through hole 823 that penetrates in the thickness direction of the gear 821. The fourth through hole 823 is a single through hole located on a concentric circle in which the second through hole 283 is formed when the hour wheel 28 is viewed in the axial direction, and detects the rotational position of the second wheel 82. Used for
The third wheel & pinion 83 includes a gear 831 that meshes with the fourth pinion of the second wheel 82, and a third pinion that is formed on the dial side of the gear 831. The third wheel & pinion 83 is formed with one through hole 833 penetrating in the thickness direction of the gear 831.
The second wheel & pinion 84 includes a gear 841 that meshes with the third pinion of the third wheel & pinion 83, and the second wheel & pinion 84 is formed with one third through hole 843 that penetrates in the thickness direction. The third through hole 843 is one through hole located on the concentric circle in which the second through hole 283 is formed when the hour wheel 28 is viewed in the axial direction, and detects the rotational position of the center wheel & pinion 84. Used for.

センサー基板4は、日車21の内周に配置されている。センサー基板4は、検出部6A,6B,6Cを構成する発光素子61A,62A,63Aを保持する。これら発光素子61A,62A,63Aは、本発明の発光部に相当する。図5に示すようにセンサー基板4を裏蓋側から見ると、センサー基板4の裏蓋側の面に、発光素子61A,62A,63Aが設けられている。
回路基板5は、地板20の裏蓋側に配置されている。回路基板5は、検出部6A,6B,6Cを構成する受光素子61B,62B,63Bを保持する。これら受光素子61B,62B,63Bは、本発明の受光部に相当する。図4に示すように、回路基板5の文字板側の面に受光素子61B,62B,63Bが設けられている。本実施形態では、一対の発光素子と受光素子とで、一つの検出部が構成される。つまり、時計本体10は、第一発光素子61A(第一発光部)と第一受光素子61B(第一受光部)とを備える第一検出部6A、第二発光素子62A(第二発光部)と第二受光素子62B(第二受光部)とを備える第二検出部6B、並びに第三発光素子63A(第三発光部)と第三受光素子63B(第三受光部)とを備える第三検出部6Cという、計3つの検出部を有する。
第一検出機構は、第一検出部6Aと、第一貫通孔282と、貫通孔723と、貫通孔713とを備える。
第二検出機構は、第二検出部6Bと、第二貫通孔283と、第三貫通孔843と、貫通孔833と、第四貫通孔823と、貫通孔813とを備える。
AM/PM検出機構は、第三検出部6Cと、第五貫通孔251とを備える。
The sensor substrate 4 is disposed on the inner periphery of the date dial 21. The sensor substrate 4 holds the light emitting elements 61A, 62A, and 63A that constitute the detection units 6A, 6B, and 6C. These light emitting elements 61A, 62A, 63A correspond to the light emitting part of the present invention. As shown in FIG. 5, when the sensor substrate 4 is viewed from the back cover side, the light emitting elements 61 </ b> A, 62 </ b> A, and 63 </ b> A are provided on the surface of the sensor substrate 4 on the back cover side.
The circuit board 5 is disposed on the back cover side of the ground plane 20. The circuit board 5 holds the light receiving elements 61B, 62B, and 63B that constitute the detection units 6A, 6B, and 6C. These light receiving elements 61B, 62B, and 63B correspond to the light receiving portion of the present invention. As shown in FIG. 4, light receiving elements 61 </ b> B, 62 </ b> B, 63 </ b> B are provided on the face of the circuit board 5 on the dial plate side. In the present embodiment, a pair of light emitting elements and light receiving elements constitutes one detection unit. That is, the watch body 10 includes a first detection unit 6A and a second light emitting element 62A (second light emitting unit) each including a first light emitting element 61A (first light emitting unit) and a first light receiving element 61B (first light receiving unit). And a second detector 6B comprising a second light receiving element 62B (second light receiving part), and a third comprising a third light emitting element 63A (third light emitting part) and a third light receiving element 63B (third light receiving part). There are a total of three detection units called detection units 6C.
The first detection mechanism includes a first detection unit 6 </ b> A, a first through hole 282, a through hole 723, and a through hole 713.
The second detection mechanism includes a second detection unit 6B, a second through hole 283, a third through hole 843, a through hole 833, a fourth through hole 823, and a through hole 813.
The AM / PM detection mechanism includes a third detection unit 6C and a fifth through hole 251.

まず、第一検出機構が備える第一検出部6A、および第二検出機構が備える第二検出部6Bについて説明する。
センサー基板4が、時計本体10に組み込まれると、第一発光素子61Aおよび第二発光素子62Aは、それぞれ筒車28の文字板14側(表側)に配置される。また、回路基板5が、時計本体10に組み込まれると、第一受光素子61Bおよび第二受光素子62Bは、それぞれ秒車82の裏蓋側に配置される。
そして、第一発光素子61Aと第一受光素子61Bとが、筒車28を挟んで互いに対向して配置され、第二発光素子62Aと第二受光素子62Bとが、筒車28,二番車84,秒車82を挟んで互いに対向して配置される。ここで、上述のとおり電子時計1の厚さ方向において、センサー基板4と筒車28との間に、筒車28から日回し中間車24や日車21の高さ位置までの空間が設けられている。そしてセンサー基板4を時計本体10に組み込むと、第一発光素子61Aおよび第二発光素子62Aが、この空間に配置される。
First, the first detection unit 6A included in the first detection mechanism and the second detection unit 6B included in the second detection mechanism will be described.
When the sensor substrate 4 is incorporated into the watch body 10, the first light emitting element 61 </ b> A and the second light emitting element 62 </ b> A are respectively arranged on the dial 14 side (front side) of the hour wheel 28. Further, when the circuit board 5 is incorporated in the watch body 10, the first light receiving element 61 </ b> B and the second light receiving element 62 </ b> B are respectively disposed on the back cover side of the second wheel 82.
The first light emitting element 61A and the first light receiving element 61B are arranged to face each other across the hour wheel 28, and the second light emitting element 62A and the second light receiving element 62B are the hour wheel 28 and the second wheel. 84, they are arranged opposite to each other across the second wheel 82. Here, as described above, in the thickness direction of the electronic timepiece 1, a space from the hour wheel 28 to the height position of the intermediate wheel 24 and the date wheel 21 is provided between the sensor board 4 and the hour wheel 28. ing. When the sensor substrate 4 is assembled in the watch body 10, the first light emitting element 61A and the second light emitting element 62A are arranged in this space.

第一発光素子61Aと第一受光素子61Bとを備える第一検出部6Aは、第一貫通孔282、貫通孔723、および貫通孔713を検出し、時針11が所定位置であるか検出するために用いられる。第一発光素子61Aは、第一貫通孔282の移動軌跡上に向かって第一検出光を出射し、第一受光素子61Bは、第一検出光を受光する。上述のとおり、第一貫通孔282が設けられている位置は、二番車84および秒車82の外周よりも外側である。そのため、第一検出光は、第一発光素子61Aから第一貫通孔282の移動軌跡上に向かって出射され、第一貫通孔282を通過すれば、二番車84および秒車82に遮られない。また、第一検出光の光路上には、図4や図7に示すように、第一中間車71および第二中間車72の一部が重なって配置されている。ここで、第一中間車71の貫通孔713、および第二中間車72の貫通孔723は、第一検出光が第一貫通孔282を通過するタイミングで当該光路上に回転移動するように形成されている。そのため、第一発光素子61Aから出射した第一検出光は、第一貫通孔282を通過すると、他の2つの貫通孔723,713も通過して、第一受光素子61Bにて受光される。
筒車28は、12時間毎に1回転するので、第一貫通孔282は、第一検出部6Aに対向する位置に12時間毎に移動してくる。本実施形態では、時針11が、午前0時および午後0時を指示する位置において、第一貫通孔282、貫通孔723、および貫通孔713が検出されるように設定されている。すなわち、時針11が、午前0時および午後0時を指示するときの筒車28、第一中間車71および第二中間車72の回転位置を上述の第一基準位置と設定されている。
The first detector 6A including the first light emitting element 61A and the first light receiving element 61B detects the first through hole 282, the through hole 723, and the through hole 713, and detects whether the hour hand 11 is in a predetermined position. Used for. The first light emitting element 61A emits first detection light toward the movement trajectory of the first through hole 282, and the first light receiving element 61B receives the first detection light. As described above, the position where the first through hole 282 is provided is outside the outer periphery of the center wheel & pinion 84 and the second wheel 82. Therefore, the first detection light is emitted from the first light emitting element 61 </ b> A toward the movement trajectory of the first through hole 282, and if it passes through the first through hole 282, it is blocked by the second wheel 84 and the second wheel 82. Absent. Further, as shown in FIGS. 4 and 7, the first intermediate wheel 71 and the second intermediate wheel 72 are partially overlapped on the optical path of the first detection light. Here, the through hole 713 of the first intermediate wheel 71 and the through hole 723 of the second intermediate wheel 72 are formed so as to rotate and move on the optical path at the timing when the first detection light passes through the first through hole 282. Has been. Therefore, when the first detection light emitted from the first light emitting element 61A passes through the first through hole 282, it also passes through the other two through holes 723 and 713 and is received by the first light receiving element 61B.
Since the hour wheel 28 rotates once every 12 hours, the first through hole 282 moves to the position facing the first detection unit 6A every 12 hours. In the present embodiment, the hour hand 11 is set so that the first through hole 282, the through hole 723, and the through hole 713 are detected at positions indicating midnight and 0:00. That is, the rotational positions of the hour wheel 28, the first intermediate wheel 71, and the second intermediate wheel 72 when the hour hand 11 indicates 0:00 am and 0:00 pm are set as the above-described first reference position.

第二発光素子62Aと第二受光素子62Bとを備える第二検出部6Bは、12個の第二貫通孔283の内の一つと、第三貫通孔843と、貫通孔833と、第四貫通孔823と、貫通孔813とを検出し、分針12および秒針13が所定位置であるかを検出するために用いられる。第二発光素子62Aは、第二貫通孔283が形成された上述の同心円上に向かって第二検出光を出射し、第二受光素子62Bは、第二検出光を受光する。
12個の第二貫通孔283が同心円上に等間隔で形成されている筒車28は、上述のとおり12時間毎に1回転するので、第二貫通孔283は、第二検出部6Bに対向する位置に1時間毎に移動してくる。1個の第三貫通孔843が形成されている二番車84は、1時間ごとに1回転するので、第三貫通孔843は、第二検出部6Bに対向する位置に1時間毎に移動してくる。1つの第四貫通孔823が形成されている秒車82は、1分毎に1回転するので、第四貫通孔823は、第二検出部6Bに対向する位置に1分毎に移動してくる。そして、本実施形態では、第二貫通孔283、第三貫通孔843、および第四貫通孔823は、時針11が0時、1時、2時などの正時に移動し、分針12および秒針13が0時の位置に移動したときに、重なり合うように形成されている。また、秒車82と二番車84との間には、図4や図8に示すように、五番車81および三番車83の一部が重なって配置されている。五番車81の貫通孔813、および三番車83の貫通孔833も、このタイミングで貫通孔283,843,823と重なり合う。そのため、1時間に1回、これら貫通孔283,843,833,813、823が重なり合い、この時刻において、第二発光素子62Aから前記同心円上に向かって出射された第二検出光は、これら5つの貫通孔283,843,833,813,823を通過し、第二受光素子62Bによって受光される。そして、分針12、および秒針13が0時(0分0秒)の位置に移動したときの二番車84、三番車83、秒車82、五番車81の回転位置が上述の第二基準位置とされる。
The second detection unit 6B including the second light emitting element 62A and the second light receiving element 62B includes one of twelve second through holes 283, a third through hole 843, a through hole 833, and a fourth through hole. It is used to detect the hole 823 and the through hole 813 and detect whether the minute hand 12 and the second hand 13 are at predetermined positions. The second light emitting element 62A emits second detection light toward the above-described concentric circle in which the second through hole 283 is formed, and the second light receiving element 62B receives the second detection light.
Since the hour wheel 28 in which the twelve second through holes 283 are concentrically formed at equal intervals rotates once every 12 hours as described above, the second through hole 283 faces the second detection unit 6B. It moves to the position to be every hour. Since the second wheel & pinion 84 in which one third through-hole 843 is formed rotates once every hour, the third through-hole 843 moves to the position facing the second detection unit 6B every hour. Come on. Since the second wheel 82 in which one fourth through-hole 823 is formed rotates once every minute, the fourth through-hole 823 moves every minute to a position facing the second detection unit 6B. come. In the present embodiment, the second through-hole 283, the third through-hole 843, and the fourth through-hole 823 move on the hour such as 0, 1, 2 and 2:00, and the minute hand 12 and the second hand 13 Are overlapped when moved to the 0 o'clock position. In addition, as shown in FIGS. 4 and 8, a fifth wheel 81 and a third wheel 83 are partially overlapped between the second wheel 82 and the second wheel 84. The through hole 813 of the fifth wheel & pinion 81 and the through hole 833 of the third wheel & pinion 83 also overlap with the through holes 283, 843 and 823 at this timing. Therefore, the through holes 283, 843, 833, 813, and 823 overlap each other once an hour, and at this time, the second detection light emitted from the second light emitting element 62 A toward the concentric circles is 5 The light passes through the two through holes 283, 843, 833, 813, and 823 and is received by the second light receiving element 62 </ b> B. The rotational positions of the second wheel 84, the third wheel 83, the second wheel 82, and the fifth wheel 81 when the minute hand 12 and the second hand 13 are moved to the 0 o'clock (0 minute 0 second) position are the second described above. It is set as a reference position.

次に、AM/PM検出機構が備える第三検出部6Cについて説明する。
センサー基板4および回路基板5が、時計本体10に組み込まれると、第三検出部6Cは、検出車25に対向する位置に配置される。すなわち、第三検出部6Cと検出車25とが、これらの間に日回し中間車24や第五中間車26等の他の歯車を介在させずに、向き合っている。このとき、第三発光素子63Aは、検出車25の文字板14側(表側)に配置され、第三受光素子63Bは、検出車25の裏蓋側に配置される。そして、第三発光素子63Aと第三受光素子63Bとは、検出車25を挟んで互いに対向して配置される。ここで、上述のとおり電子時計1の厚さ方向において、検出車25の文字板14側には、検出車25から日回し中間車24や日車21の高さ位置までの空間が設けられている。そしてセンサー基板4を時計本体10に組み込むと、図9および図10に示されているように、第三発光素子63Aが、この空間に配置される。
Next, the 3rd detection part 6C with which an AM / PM detection mechanism is provided is demonstrated.
When the sensor board 4 and the circuit board 5 are assembled into the watch body 10, the third detection unit 6 </ b> C is arranged at a position facing the detection wheel 25. That is, the third detector 6C and the detection wheel 25 face each other without interposing other gears such as the intermediate wheel 24 and the fifth intermediate wheel 26 between them. At this time, the third light emitting element 63A is disposed on the dial 14 side (front side) of the detection wheel 25, and the third light receiving element 63B is disposed on the back cover side of the detection wheel 25. The third light emitting element 63A and the third light receiving element 63B are disposed to face each other with the detection wheel 25 interposed therebetween. Here, as described above, in the thickness direction of the electronic timepiece 1, a space from the detection wheel 25 to the height position of the intermediate date wheel 24 and the date wheel 21 is provided on the dial 14 side of the detection wheel 25. Yes. When the sensor substrate 4 is assembled into the watch body 10, the third light emitting element 63A is arranged in this space as shown in FIGS.

検出車25が回転し、第五貫通孔251が第三発光素子63Aおよび第三受光素子63Bに対向する位置(AM/PM基準位置)まで移動すると、第三発光素子63Aから第五貫通孔251の移動軌跡上に向かって出射され、出射された第三検出光が当該貫通孔を通過して第三受光素子63Bによって受光可能になる。このように第三受光素子63Bが、第三検出光を受光することで、検出車25がAM/PM基準位置に回転したことを検出できる。
本実施形態では、検出車25は、48時間毎に1回転し、2つの第五貫通孔251が検出車25の回転軸252の位置を挟んで配置されている。そのため、検出車25は、24時間毎に1回、AM/PM基準位置へ回転する。このとき、第五貫通孔251の一方が、第三発光素子63Aおよび第三受光素子63Bに対向する位置まで回転することになる。そのため、第三検出部6Cは、検出車25が24時間分回転する毎に第五貫通孔251を検出できる。よって、時針11が、0時に位置し、午前0時に相当するときの検出車25の回転位置を、AM/PM基準位置に設定しておけば、時針11が「0時」に位置した際に、第三検出部6Cによって第五貫通孔251の検出処理がなされる。そして、時針11の「0時」の位置が、午前0時に対応したものであるか、午後0時に対応したものであるかを判別できる。午前0時であれば、第三検出光は、第五貫通孔251を通過して第三受光素子63Bに検出され、午後0時であれば、第三検出光は第五貫通孔251を通過できず第三受光素子63Bに検出されないからである。
When the detection wheel 25 rotates and the fifth through hole 251 moves to a position (AM / PM reference position) opposite to the third light emitting element 63A and the third light receiving element 63B, the fifth through hole 251 extends from the third light emitting element 63A. The third detection light emitted toward the movement locus of the first light passes through the through hole and can be received by the third light receiving element 63B. As described above, the third light receiving element 63B receives the third detection light, so that it can be detected that the detection wheel 25 has been rotated to the AM / PM reference position.
In the present embodiment, the detection wheel 25 rotates once every 48 hours, and the two fifth through holes 251 are arranged with the position of the rotation shaft 252 of the detection wheel 25 interposed therebetween. Therefore, the detection wheel 25 rotates to the AM / PM reference position once every 24 hours. At this time, one of the fifth through holes 251 rotates to a position facing the third light emitting element 63A and the third light receiving element 63B. Therefore, the third detection unit 6C can detect the fifth through hole 251 every time the detection wheel 25 rotates for 24 hours. Therefore, if the rotation position of the detection wheel 25 when the hour hand 11 is located at 0:00 and corresponds to midnight is set to the AM / PM reference position, the hour hand 11 is located at “0 o'clock”. Then, the third detection portion 6C performs the detection process of the fifth through hole 251. Then, it can be determined whether the “0 o'clock” position of the hour hand 11 corresponds to midnight or midnight. If it is midnight, the third detection light passes through the fifth through hole 251 and is detected by the third light receiving element 63B. If it is 0:00, the third detection light passes through the fifth through hole 251. This is because it cannot be detected by the third light receiving element 63B.

次に、本実施形態における第一検出機構、第二検出機構、およびAM/PM検出機構による、針位置検出、および時刻修正について説明する。この針位置検出は、通常、電子時計1の内部に設けられた内部時計で計時している内部時刻が、午前0時0分0秒になった時点で実行される。また、針位置の検出処理を実行する操作を手動で行った場合にも実行される。
図11は、電子時計1の各指針の位置検出処理を示すフローチャートである。
まず、第一検出工程にて、第一検出部6Aによる時針11の位置検出が実施される(ステップ1、以下、フローチャートのステップを「S」と略記する。)。S1では、第一検出部6Aの第一発光素子61Aは、第一検出光を出射する。
次に、筒車28が、第一基準位置に回転しているか確認する処理が実施される(S2)。筒車28、第一中間車71および第二中間車72が、第一基準位置に回転しているか否かは、出射された第一検出光が、第一貫通孔282,貫通孔723,貫通孔713を通過して、第一受光素子61Bによって受光されたか否かで判定される。第一検出光が受光されれば、筒車28、第一中間車71および第二中間車72が、第一基準位置に回転していることになる(S2の「YES」)。このとき、時針11は、「0時」の位置にあり、午前0時または午後0時のいずれかに相当する。一方、時針11の位置がずれていると、第一検出光は、第一受光素子61Bによって受光されない。この場合、筒車28、第一中間車71および第二中間車72が、第一基準位置に回転していないので(S2の「NO」)、第一モーター70を1ステップ分(時針11を1分間に相当する分)駆動して(S3)、筒車28を回転させて、再度、第一貫通孔282,貫通孔723,貫通孔713の検出を実施する。以降、第一検出光が第一貫通孔282,貫通孔723,貫通孔713を通過する位置となるまで、筒車28、第一中間車71および第二中間車72の回転位置の検出(S2)と、第一モーター70による筒車28、第一中間車71および第二中間車72の駆動(S3)とを繰り返し実施する。第一検出工程で時針11の位置を検出するため、1ステップ分ずつ時針11を動かしながら検出処理を行い、最大で720回分の検出処理を行う。例えば、第一検出工程での検出処理は、第一モーター70を1ステップ、25Hzの周波数で駆動させながら検出光を発して検出処理を行うため、検出処理時間は、最大で、720/25=28.8秒となる。
Next, needle position detection and time correction by the first detection mechanism, the second detection mechanism, and the AM / PM detection mechanism in the present embodiment will be described. This detection of the hand position is normally performed when the internal time measured by an internal clock provided in the electronic timepiece 1 becomes 0:00 AM 0 seconds. It is also executed when the operation for executing the needle position detection process is performed manually.
FIG. 11 is a flowchart showing the position detection process of each hand of the electronic timepiece 1.
First, in the first detection step, the position of the hour hand 11 is detected by the first detection unit 6A (step 1, hereinafter, steps in the flowchart are abbreviated as “S”). In S1, the first light emitting element 61A of the first detection unit 6A emits the first detection light.
Next, processing for confirming whether the hour wheel 28 is rotated to the first reference position is performed (S2). Whether the hour wheel 28, the first intermediate wheel 71, and the second intermediate wheel 72 are rotated to the first reference position depends on whether the emitted first detection light is the first through hole 282, the through hole 723, or the through hole. It is determined by whether or not the light is received by the first light receiving element 61B through the hole 713. If the first detection light is received, the hour wheel 28, the first intermediate wheel 71, and the second intermediate wheel 72 are rotated to the first reference position (“YES” in S2). At this time, the hour hand 11 is in the “0 o'clock” position and corresponds to either midnight or midnight. On the other hand, if the position of the hour hand 11 is shifted, the first detection light is not received by the first light receiving element 61B. In this case, since the hour wheel 28, the first intermediate wheel 71, and the second intermediate wheel 72 are not rotated to the first reference position (“NO” in S2), the first motor 70 is moved by one step (the hour hand 11 is turned off). It is driven (corresponding to one minute) (S3), the hour wheel 28 is rotated, and the first through hole 282, the through hole 723, and the through hole 713 are detected again. Thereafter, the rotation positions of the hour wheel 28, the first intermediate wheel 71, and the second intermediate wheel 72 are detected until the first detection light reaches a position that passes through the first through hole 282, the through hole 723, and the through hole 713 (S2). And the driving of the hour wheel 28, the first intermediate wheel 71, and the second intermediate wheel 72 by the first motor 70 (S3) are repeatedly performed. In order to detect the position of the hour hand 11 in the first detection step, detection processing is performed while moving the hour hand 11 by one step at a time, and detection processing for 720 times is performed at the maximum. For example, in the detection process in the first detection step, the detection process is performed by emitting detection light while driving the first motor 70 at a frequency of 25 Hz, so that the detection process time is 720/25 = 28.8 seconds.

第一検出工程にて、筒車28、第一中間車71および第二中間車72が第一基準位置まで回転したことが検出された後(S2の「YES」)、第二検出工程が実施される。第二検出工程では、まず、第三検出部6Cによる第五貫通孔251の検出、つまり時針11の示す時刻が午前であるか午後であるかの検出(AM/PMの検出)が実施される(S4)。S4では、第三発光素子63Aは、第三検出光を出射する。
次に、検出車25が、AM/PM基準位置に回転しているか確認する処理が実施される(S5)。検出車25が、AM/PM基準位置に回転しているか否かは、第五貫通孔251がAM/PM基準位置にあり、出射された第三検出光が、第五貫通孔251を通過して、第三受光素子63Bによって受光されたか否かで判定される。第三検出光が受光されれば、検出車25が、AM/PM基準位置に回転していることになる(S5の「YES」)。このとき、時針11は、0時の位置にあり、午前0時に相当する。しかし、時針11の位置が0時であっても、午後0時に相当する場合、第三検出光は、第三受光素子63Bによって受光されない。この場合、検出車25が、AM/PM基準位置に回転しておらず(S5の「NO」)、検出車25がAM/PM基準位置まで回転するには、筒車28をあと12時間分回転させて、これに連動させて検出車25を回転させる必要がある。そこで、第一モーター70を720ステップ分(時針11を12時間に相当する分)駆動して(S6)、筒車28を回転させて、再度、第五貫通孔251の検出を実施する。この場合、第一検出工程で、時針11はすでに、0時の位置に移動しているので、第一モーター70の720ステップ分の駆動によって、筒車28も一緒に回転し、時針11は、再び0時の位置まで移動する。この状態で、検出処理を行うと、検出車25が、AM/PM基準位置に回転し、第三検出光は、第五貫通孔251を通過し、第三受光素子63Bによって受光される(S5の「YES」)。第二検出工程では、時針11を12時間分動かして検出処理を行うので、1回分の検出処理を行う。例えば、第二検出工程での検出処理は、第五貫通孔251が検出されなかった場合、第一モーター70を、64Hzの周波数で720ステップ分を駆動させた後、検出光を出射して検出処理を行うので、検出処理時間は、720/64=11.25秒となる。
After it is detected in the first detection step that the hour wheel 28, the first intermediate wheel 71 and the second intermediate wheel 72 have been rotated to the first reference position (“YES” in S2), the second detection step is performed. Is done. In the second detection step, first, detection of the fifth through hole 251 by the third detection unit 6C, that is, detection of whether the time indicated by the hour hand 11 is AM or PM (AM / PM detection) is performed. (S4). In S4, the third light emitting element 63A emits third detection light.
Next, a process of confirming whether the detection wheel 25 is rotating to the AM / PM reference position is performed (S5). Whether or not the detection wheel 25 is rotated to the AM / PM reference position is determined based on whether the fifth through hole 251 is at the AM / PM reference position, and the emitted third detection light passes through the fifth through hole 251. Whether or not the light is received by the third light receiving element 63B is determined. If the third detection light is received, the detection wheel 25 is rotated to the AM / PM reference position (“YES” in S5). At this time, the hour hand 11 is at the 0:00 position and corresponds to midnight. However, even if the position of the hour hand 11 is 0 o'clock, if it corresponds to 0 o'clock, the third detection light is not received by the third light receiving element 63B. In this case, the detection wheel 25 is not rotated to the AM / PM reference position (“NO” in S5), and the hour wheel 28 is left for 12 hours for the detection wheel 25 to rotate to the AM / PM reference position. It is necessary to rotate the detection wheel 25 in conjunction with the rotation. Therefore, the first motor 70 is driven by 720 steps (the hour hand 11 corresponds to 12 hours) (S6), the hour wheel 28 is rotated, and the fifth through hole 251 is detected again. In this case, since the hour hand 11 has already moved to the 0 o'clock position in the first detection step, the hour wheel 11 is also rotated together by driving the first motor 70 for 720 steps. Move again to the 0 o'clock position. When detection processing is performed in this state, the detection wheel 25 rotates to the AM / PM reference position, and the third detection light passes through the fifth through hole 251 and is received by the third light receiving element 63B (S5). "YES") In the second detection process, since the detection process is performed by moving the hour hand 11 by 12 hours, one detection process is performed. For example, in the detection process in the second detection step, when the fifth through hole 251 is not detected, the first motor 70 is driven for 720 steps at a frequency of 64 Hz, and then the detection light is emitted and detected. Since the process is performed, the detection processing time is 720/64 = 11.25 seconds.

第二検出工程にて、検出車25がAM/PM基準位置まで回転したことが検出された後(S5の「YES」)、第三検出工程が実施される。第三検出工程では、まず、第二検出部6Bによる第二貫通孔283、第三貫通孔843、貫通孔833、第四貫通孔823、貫通孔813の検出が実施され、分針12および秒針13の位置が確認される(S7)。S7では、第二発光素子62Aは、第二検出光を出射する。
次に、二番車84、三番車83、秒車82、および五番車81が第二基準位置に回転しているか確認する処理が実施される(S8)。二番車84、三番車83、秒車82、および五番車81が、第二基準位置に回転しているか否かは、上述のように筒車28の軸方向で見て、第二貫通孔283、第三貫通孔843、貫通孔833、貫通孔813および第四貫通孔823が重なり合い、出射された第二検出光が、これら5つの貫通孔283,843,833,813,823を通過して、第二受光素子62Bによって受光されたか否かで判定される。第二検出光が受光されれば、二番車84、三番車83、秒車82、および五番車81が第二基準位置に回転していることになる(S8の「YES」)。このとき、分針12および秒針13が0時の位置にある。
しかし、分針12および秒針13が0時の位置に無く、ずれていると、第二検出光は、第二受光素子62Bによって受光されない。この場合、二番車84、三番車83、秒車82、および五番車81が、第二基準位置に回転しておらず、第二貫通孔283、第三貫通孔843、貫通孔833、貫通孔813、および第四貫通孔823が重なっていないので(S8の「NO」)、第二モーター80を1ステップ分(秒針13を1秒間に相当する分)駆動して、二番車84、三番車83、秒車82、および五番車81を回転させて、再度、5つの貫通孔283,843,833,813,823の検出を実施する(S9)。なお、時針11については、上述のとおり先に第一検出工程にて、0時の位置に移動している。そのため、第二発光素子62Aから出射した第二検出光は、12個の内のいずれか一つの第二貫通孔283を通過する。よって、5つの貫通孔を通過させるため、第二モーター80にて、秒分輪列80Aの各歯車81,82,83,84を回転させて、第三貫通孔843、貫通孔833、貫通孔813、および第四貫通孔823の回転位置を調整する。以降、第二検出光が、5つの貫通孔283,843,833,813,823を通過する位置となるまで、二番車84、三番車83、秒車82、および五番車81の回転位置の検出(S8)と、第二モーター80による秒分輪列80Aの駆動(S9)とを繰り返し実施する。分針12、および秒針13が連動して動くため、第三検出工程では、秒針13を1ステップ分ずつ動かしながら、所定位置にあるか検出処理を行う。そのため、最大60分間に相当する分、すなわち最大3600回分の検出処理を行う。例えば、第三検出工程での検出処理は、第二モーター80を1ステップ、25Hzの周波数で駆動させながら検出光を発して検出処理を行うため、検出処理時間は、最大で、3600/25=144秒となる。
After it is detected in the second detection step that the detection wheel 25 has rotated to the AM / PM reference position (“YES” in S5), the third detection step is performed. In the third detection step, first, detection of the second through hole 283, the third through hole 843, the through hole 833, the fourth through hole 823, and the through hole 813 by the second detection unit 6B is performed, and the minute hand 12 and the second hand 13 are detected. Is confirmed (S7). In S7, the second light emitting element 62A emits the second detection light.
Next, a process of confirming whether the second wheel 84, the third wheel 83, the second wheel 82, and the fifth wheel 81 are rotated to the second reference position is performed (S8). Whether or not the second wheel 84, the third wheel 83, the second wheel 82, and the fifth wheel 81 are rotated to the second reference position is determined by checking the axial direction of the hour wheel 28 as described above. The through hole 283, the third through hole 843, the through hole 833, the through hole 813, and the fourth through hole 823 overlap, and the emitted second detection light passes through these five through holes 283, 843, 833, 813, and 823. Determination is made based on whether or not the light has passed and is received by the second light receiving element 62B. If the second detection light is received, the second wheel 84, the third wheel 83, the second wheel 82, and the fifth wheel 81 are rotated to the second reference position (“YES” in S8). At this time, the minute hand 12 and the second hand 13 are at the 0 o'clock position.
However, if the minute hand 12 and the second hand 13 are not at the 0 o'clock position and are shifted, the second detection light is not received by the second light receiving element 62B. In this case, the second wheel 84, the third wheel 83, the second wheel 82, and the fifth wheel 81 are not rotated to the second reference position, and the second through hole 283, the third through hole 843, and the through hole 833 are not rotated. Since the through-hole 813 and the fourth through-hole 823 do not overlap (“NO” in S8), the second motor 80 is driven for one step (the second hand 13 corresponds to one second) and the second wheel 84, the third wheel 83, the second wheel 82, and the fifth wheel 81 are rotated to detect the five through holes 283, 843, 833, 813, and 823 again (S9). Note that the hour hand 11 has been moved to the 0 o'clock position in the first detection step as described above. Therefore, the second detection light emitted from the second light emitting element 62A passes through any one of the twelve second through holes 283. Therefore, in order to pass the five through holes, the second motor 80 rotates the gears 81, 82, 83, 84 of the second minute wheel train 80A, and the third through hole 843, the through hole 833, the through hole 813 and the rotation position of the fourth through hole 823 are adjusted. Thereafter, the second wheel 84, the third wheel 83, the second wheel 82, and the fifth wheel 81 are rotated until the second detection light reaches a position where it passes through the five through holes 283, 843, 833, 813, and 823. The position detection (S8) and the driving of the second minute wheel train 80A by the second motor 80 (S9) are repeatedly performed. Since the minute hand 12 and the second hand 13 move in conjunction with each other, in the third detection step, whether the second hand 13 is in a predetermined position is detected while moving the second hand 13 step by step. Therefore, a detection process corresponding to a maximum of 60 minutes, that is, a maximum of 3600 times of detection processing is performed. For example, in the detection process in the third detection step, the detection process is performed by emitting detection light while driving the second motor 80 at a frequency of 25 Hz in one step, and therefore the detection process time is 3600/25 = 144 seconds.

以上のように、第一検出工程から第三検出工程までを実施すると、時針11、分針12、および秒針13は、0時の位置にあり、時針11が示す0時は、午前0時に相当する。このような針位置に合わせた状態で、針位検出機能は、受信した時刻情報に基づいて、表示時刻を修正する。
また、第一検出工程から第三検出工程までの実施の他、必要に応じて、第三検出工程のみを追加実施し、分針12、および秒針13の位置検出の頻度を増やしてもよい。第二貫通孔283は、12個形成されているので、上述のとおり、第二貫通孔283、第三貫通孔843、貫通孔833、貫通孔813、および第四貫通孔823は、1時間毎に重なり合う。そのため、1時間毎に、第二発光素子62Aから前記同心円上に向かって第二検出光を出射して、これら貫通孔283,843,833,813,823を通過するか否かを検出することで、分針12、および秒針13の位置検出が可能である。
As described above, when the first detection process to the third detection process are performed, the hour hand 11, the minute hand 12, and the second hand 13 are at the 0 o'clock position, and the hour indicated by the hour hand 11 corresponds to midnight. . In a state of matching with such a hand position, the hand position detection function corrects the display time based on the received time information.
In addition to the implementation from the first detection process to the third detection process, only the third detection process may be additionally performed as necessary to increase the frequency of position detection of the minute hand 12 and the second hand 13. Since twelve second through holes 283 are formed, as described above, the second through hole 283, the third through hole 843, the through hole 833, the through hole 813, and the fourth through hole 823 are provided every hour. Overlap. Therefore, every second, the second detection light is emitted from the second light emitting element 62A toward the concentric circle to detect whether or not it passes through the through holes 283, 843, 833, 813, and 823. Thus, the positions of the minute hand 12 and the second hand 13 can be detected.

上述した本実施形態に係る電子時計1によれば、以下の効果を奏する。
電子時計1では、上述のような構成を備え、およそ次のような輪列構成を採用している。すなわち、第一モーター70にて時針11、および日車21(カレンダー車)を駆動させる駆動輪列22と、第二モーター80にて、分針12、および秒針13を駆動させる秒分輪列80Aとを備える。そして、各歯車に形成された第一貫通孔282、貫通孔723、貫通孔713、第二貫通孔283、第三貫通孔843、貫通孔833、貫通孔813、および第四貫通孔823を利用し、筒車28、二番車84、および秒車82が所定の基準位置に回転していることを検出する機構を採用した。
したがって、電子時計1によれば、第一検出部6Aが、第一貫通孔282、貫通孔723、貫通孔713を検出することで時針11の位置を検出可能となり、第二検出部6Bが、筒車28、第二検出部6Bが、第一貫通孔282、第二貫通孔283、第三貫通孔843、貫通孔833、第四貫通孔823、および貫通孔813を検出することで、分針12、および秒針13の位置を検出可能である。また、時針11、分針12、および秒針13の位置を検出するために別途専用の検出車(例えば、秒中間車等)を設ける場合に比べて、部品点数を少なくできる。
ゆえに、電子時計1によれば、時針11、分針12、秒針13の各指針の位置を検出でき、かつ、平面サイズを小さくでき、小型の電子時計を提供することができる。
The electronic timepiece 1 according to this embodiment described above has the following effects.
The electronic timepiece 1 has the above-described configuration and employs the following train wheel configuration. That is, a driving wheel train 22 for driving the hour hand 11 and the date wheel 21 (calendar wheel) by the first motor 70, and a second minute wheel train 80A for driving the minute hand 12 and the second hand 13 by the second motor 80, Is provided. Then, the first through hole 282, the through hole 723, the through hole 713, the second through hole 283, the third through hole 843, the through hole 833, the through hole 813, and the fourth through hole 823 formed in each gear are used. In addition, a mechanism for detecting that the hour wheel 28, the second wheel & pinion 84, and the second wheel 82 are rotating to a predetermined reference position is employed.
Therefore, according to the electronic timepiece 1, the first detection unit 6A can detect the position of the hour hand 11 by detecting the first through hole 282, the through hole 723, and the through hole 713, and the second detection unit 6B The hour wheel 28 and the second detection unit 6B detect the first through hole 282, the second through hole 283, the third through hole 843, the through hole 833, the fourth through hole 823, and the through hole 813, so that the minute hand 12 and the position of the second hand 13 can be detected. Further, the number of parts can be reduced as compared with a case where a separate dedicated detection wheel (for example, a second intermediate wheel) is provided to detect the positions of the hour hand 11, the minute hand 12, and the second hand 13.
Therefore, according to the electronic timepiece 1, the positions of the hands of the hour hand 11, the minute hand 12, and the second hand 13 can be detected, the plane size can be reduced, and a small electronic timepiece can be provided.

電子時計1によれば、第五貫通孔251が、AM/PM基準位置まで回転したか否かを検出することで、時針11の示す0時が、午前0時であるか、午後0時であるかを確認できる。
また、電子時計1では、検出車25が、日車21を駆動する駆動輪列22に設けられているので、別途、専用の検出車を設ける必要がない。
すなわち、電子時計1によれば、駆動輪列22に設けられる歯車を検出車25としても兼用できるので、駆動輪列22とは別に専用の検出車を設ける場合に比べて、部品点数を少なくでき、カレンダー機構を小型化できる。さらに、日車21を第一モーター70で駆動させることができるので、前記特許文献1のようなカレンダー車を駆動させるための暦モーターを設ける必要がない。
ゆえに、電子時計1においても、時針11、分針12、秒針13の各指針の位置を検出に加え、時針11の表示が午前であるか午後であるかを判別可能な小型の電子時計を提供することができる。
According to the electronic timepiece 1, by detecting whether the fifth through-hole 251 has rotated to the AM / PM reference position, the time indicated by the hour hand 11 is 0:00 am or 0:00 pm You can check if there is.
In the electronic timepiece 1, the detection wheel 25 is provided in the drive wheel train 22 that drives the date wheel 21, so that it is not necessary to separately provide a dedicated detection wheel.
That is, according to the electronic timepiece 1, since the gear provided in the drive wheel train 22 can also be used as the detection wheel 25, the number of parts can be reduced compared to the case where a dedicated detection wheel is provided separately from the drive wheel train 22. The calendar mechanism can be downsized. Further, since the date wheel 21 can be driven by the first motor 70, there is no need to provide a calendar motor for driving the calendar wheel as in the above-mentioned Patent Document 1.
Therefore, the electronic timepiece 1 also provides a small electronic timepiece that can detect whether the hour hand 11 is displayed in the morning or the afternoon in addition to detecting the positions of the hour hand 11, the minute hand 12, and the second hand 13. be able to.

電子時計1では、第一モーター70で駆動する上記駆動輪列22と、第二モーター80で駆動する上記秒分輪列80Aとを備えた電子時計において、3つの検出工程を上記順序で実施することで、検出処理の回数を低減することができる。
ゆえに、電子時計1によれば、消費電流の増大を抑制することができる
In the electronic timepiece 1, in the electronic timepiece having the driving wheel train 22 driven by the first motor 70 and the second minute wheel train 80A driven by the second motor 80, the three detection steps are performed in the above order. As a result, the number of detection processes can be reduced.
Therefore, according to the electronic timepiece 1, an increase in current consumption can be suppressed.

電子時計1では、第一検出機構、第二検出機構、およびAM/PM検出機構は、筒車28、検出車25、第一中間車71、第二中間車72、二番車84、三番車83、秒車82および五番車が所定の基準位置まで回転しているか否かで検出を行うため、別途、検出のために専用の歯車を設置する必要が無い。ゆえに、電子時計1の針位置検出方法は、省スペース設計の電子時計にとって、有効な方法である。   In the electronic timepiece 1, the first detection mechanism, the second detection mechanism, and the AM / PM detection mechanism are the hour wheel 28, the detection wheel 25, the first intermediate wheel 71, the second intermediate wheel 72, the second wheel 84, and the third wheel. Since detection is performed based on whether or not the car 83, the second wheel 82 and the fifth wheel are rotating to a predetermined reference position, it is not necessary to separately install a dedicated gear for detection. Therefore, the hand position detection method of the electronic timepiece 1 is an effective method for a space-saving electronic timepiece.

電子時計1では、第一検出機構、第二検出機構、およびAM/PM検出機構は、それぞれ、第一貫通孔282等の貫通孔と、当該貫通孔を通過させる検出光を出射する第一発光部等と、当該貫通孔を通過した当該検出光を受光する第一受光部等とで構成される。そのため、例えば、第一検出機構の場合、第一発光素子61Aと第一受光素子61Bとを筒車28を挟んで対向配置し、第一基準位置に筒車28、第一中間車71、および第二中間車72が回転したときに第一検出光が通過するように、第一貫通孔282、貫通孔723、貫通孔713を形成すれば、筒車28が第一基準位置に回転したことを容易に検出できる。その結果、より正確な第一基準位置の検出が可能になり、無駄な検出処理による消費電流の増大を抑制できる。   In the electronic timepiece 1, the first detection mechanism, the second detection mechanism, and the AM / PM detection mechanism each emit a detection light that passes through the through hole such as the first through hole 282 and the through hole. And a first light receiving portion that receives the detection light that has passed through the through hole. Therefore, for example, in the case of the first detection mechanism, the first light emitting element 61A and the first light receiving element 61B are arranged to face each other across the hour wheel 28, and the hour wheel 28, the first intermediate wheel 71, and If the first through hole 282, the through hole 723, and the through hole 713 are formed so that the first detection light passes when the second intermediate wheel 72 rotates, the hour wheel 28 has rotated to the first reference position. Can be easily detected. As a result, the first reference position can be detected more accurately, and an increase in current consumption due to useless detection processing can be suppressed.

また、第一貫通孔282等は、筒車28等の歯車の厚さ方向に貫通させて形成すればよいため、貫通孔の径寸法や形状を設計しやすい。   Moreover, since the 1st through-hole 282 etc. should just be penetrated and formed in the thickness direction of gears, such as the hour wheel 28, it is easy to design the diameter size and shape of a through-hole.

第一貫通孔282は、筒車28を軸方向で見た時に、二番車84、および秒車82の外周よりも外側の位置に形成されているため、二番車84、および秒車82によって、第一検出光が遮られない。ゆえに、筒車28が第一基準位置に回転したことの検出が容易である。   Since the first through hole 282 is formed at a position outside the outer circumferences of the second wheel 84 and the second wheel 82 when the hour wheel 28 is viewed in the axial direction, the second wheel 84 and the second wheel 82 are formed. Therefore, the first detection light is not blocked. Therefore, it is easy to detect that the hour wheel 28 has been rotated to the first reference position.

電子時計1によれば、検出車25が日回し中間車24よりも裏蓋側に配置され、検出車25の文字板14側(表側)には、検出車25から日回し中間車24や日車21の高さ位置までの空間が設けられ、この空間に第一発光素子61Aを配置することができる。従って、第一発光素子61Aの上面の高さ位置を、日回し中間車24や日車21の高さ位置と同じ、あるいは、裏蓋側に配置でき、カレンダー機構の厚さ寸法の増大を防止できる。
ゆえに、電子時計1によれば、カレンダー機構を有する構成においても、時計厚さ寸法の増大を抑制することができる。
According to the electronic timepiece 1, the detection wheel 25 is arranged closer to the back cover than the intermediate date wheel 24, and the date wheel 14 side (front side) of the detection wheel 25 is rotated from the detection wheel 25 to the intermediate date wheel 24 and date. A space up to the height position of the vehicle 21 is provided, and the first light emitting element 61A can be arranged in this space. Therefore, the height position of the upper surface of the first light emitting element 61A can be the same as the height position of the date indicator driving intermediate wheel 24 or the date indicator 21, or can be disposed on the back cover side to prevent an increase in the thickness dimension of the calendar mechanism. it can.
Therefore, according to the electronic timepiece 1, an increase in the watch thickness dimension can be suppressed even in the configuration having the calendar mechanism.

また、電子時計1では、その厚さ方向において、センサー基板4と筒車28との間に、筒車28から日回し中間車24や日車21の高さ位置までの空間が設けられている。そしてセンサー基板4を時計本体10に組み込むと、第一発光素子61Aおよび第三発光素子63Aが、この空間に配置される。
ゆえに、電子時計1によれば、時針11、分針12および秒針13の位置の検出を筒車28,二番車84,秒車82を利用して実施する構成としても、時計厚さ寸法の増大を抑制することができる。さらに、時針11、分針12および秒針13の位置を検出するための専用の検出車を設ける必要がない。よって、別に専用の検出車を設ける場合に比べて、部品点数を少なくでき、カレンダー機構を小型化できる。
In the electronic timepiece 1, a space from the hour wheel 28 to the height of the intermediate wheel 24 or the date wheel 21 is provided between the sensor board 4 and the hour wheel 28 in the thickness direction. . When the sensor substrate 4 is assembled in the watch body 10, the first light emitting element 61A and the third light emitting element 63A are arranged in this space.
Therefore, according to the electronic timepiece 1, even when the hour hand 11, the minute hand 12, and the second hand 13 are detected using the hour wheel 28, the second wheel 84, and the second wheel 82, the watch thickness dimension increases. Can be suppressed. Furthermore, there is no need to provide a dedicated detection wheel for detecting the positions of the hour hand 11, the minute hand 12, and the second hand 13. Therefore, the number of parts can be reduced and the calendar mechanism can be miniaturized as compared with the case where a dedicated detection vehicle is provided.

また、電子時計1によれば、第三発光素子63Aおよび第三受光素子63Bが、電子時計1の厚さ方向において日回し中間車24よりも裏蓋側に配置される。そのため、文字板14と日車21との間隔も狭めることができる。そうすると、文字板14の日窓15と日車21に設けた日付表示との間隔が狭まり、文字板14の日窓15から視認される日車21の日付表示の視認性が向上する。   Further, according to the electronic timepiece 1, the third light emitting element 63 </ b> A and the third light receiving element 63 </ b> B are disposed closer to the back cover than the intermediate date wheel 24 in the thickness direction of the electronic timepiece 1. Therefore, the space | interval of the dial 14 and the date dial 21 can also be narrowed. If it does so, the space | interval of the date window 15 of the dial 14 and the date display provided in the date dial 21 will narrow, and the visibility of the date display of the date dial 21 visually recognized from the date window 15 of the dial 14 will improve.

電子時計1では、検出車25が、平歯車であるので、検出車25の厚さ寸法を小さくすることができ、センサー基板4と検出車25との間隔を広くすることができる。そのため、電子時計1によれば、第三検出部6Cを配置するスペースを確保し易くなり、第三検出部6Cおよび第五貫通孔251のレイアウトを柔軟に設計できる。   In the electronic timepiece 1, since the detection wheel 25 is a spur gear, the thickness dimension of the detection wheel 25 can be reduced, and the distance between the sensor board 4 and the detection wheel 25 can be increased. Therefore, according to the electronic timepiece 1, it is easy to secure a space for arranging the third detection unit 6C, and the layout of the third detection unit 6C and the fifth through hole 251 can be designed flexibly.

電子時計1では、時針11および日車21を駆動させる動力源となる第一モーター70が、駆動輪列22を介して伝達される。そのため、日車21を駆動させるトルクが、日車専用のモーターで日車を駆動させる場合のトルクと比べて小さいので、日ジャンパー29の弾性力を弱める必要がある。しかしながら、電子時計1によれば、日回し車23と日回し中間車24とでゼネバ機構が構成されているので、日ジャンパー29の弾性力を弱めたとしても、日車21のがたつきは、日回し車23によって防止することができる。   In the electronic timepiece 1, a first motor 70 serving as a power source for driving the hour hand 11 and the date indicator 21 is transmitted via the drive wheel train 22. Therefore, since the torque for driving the date dial 21 is smaller than the torque for driving the date dial with a motor dedicated to the date dial, it is necessary to weaken the elastic force of the date jumper 29. However, according to the electronic timepiece 1, since the Geneva mechanism is configured by the date indicator driving wheel 23 and the date indicator driving intermediate wheel 24, even if the elastic force of the date jumper 29 is weakened, the rattling of the date indicator 21 is This can be prevented by the date driving wheel 23.

[実施形態の変形]
なお、本発明は前述の実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
[Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

前記実施形態では、検出車25が基準位置にあることを検出する第三検出部6Cは、第三発光素子63Aと第三受光素子63Bとで構成される透過型光センサーを用いた。
そして前記実施形態では、センサー基板4側に第三発光素子63Aを配置し、回路基板5側に第三受光素子63Bを配置したが、これと逆にセンサー基板4側に第三受光素子63Bを配置し、回路基板5側に第三発光素子63Aを配置してもよい。他の発光素子61A,62Aおよび受光素子61B,62Bで構成される検出部においても同様である。
In the above-described embodiment, the third detection unit 6C that detects that the detection wheel 25 is at the reference position uses a transmissive optical sensor including the third light emitting element 63A and the third light receiving element 63B.
In the embodiment, the third light emitting element 63A is disposed on the sensor substrate 4 side and the third light receiving element 63B is disposed on the circuit board 5 side. On the contrary, the third light receiving element 63B is disposed on the sensor substrate 4 side. The third light emitting element 63A may be arranged on the circuit board 5 side. The same applies to the detection unit including the other light emitting elements 61A and 62A and the light receiving elements 61B and 62B.

また、前記実施形態では、第三発光素子63Aと第三受光素子63Bとで構成される透過型光センサーを用いたが、このような第三検出部6Cに限定されない。例えば、反射型光センサーを用いたものであってもよい。反射型光センサーを用いる場合、検出車25の一方の面の基準位置に光反射性の被検出部を設け、発光素子と受光素子とを当該被検出部に対向させて設ける。この際、発光素子と受光素子とをセンサー基板4に設けて検出車25の文字板側に配置する構成としても、これらの素子は、上述のセンサー基板と検出車との間にできたスペースに配置されるので、電子時計の厚さ寸法の増大を抑制することができる。   In the above embodiment, the transmission type optical sensor including the third light emitting element 63A and the third light receiving element 63B is used. However, the present invention is not limited to such a third detection unit 6C. For example, a reflection type optical sensor may be used. In the case of using a reflection type optical sensor, a light-reflective detected portion is provided at a reference position on one surface of the detection wheel 25, and a light emitting element and a light receiving element are provided to face the detected portion. At this time, even if the light emitting element and the light receiving element are provided on the sensor board 4 and arranged on the dial side of the detection wheel 25, these elements are formed in a space formed between the sensor board and the detection wheel. Since it is arranged, an increase in the thickness dimension of the electronic timepiece can be suppressed.

また、前記実施形態では、カレンダー車として、日付が表示された日車を例に挙げて説明したが、これに限定されない。例えば、曜日が表示された曜車をカレンダー車としてもよい。カレンダー情報としては、曜日も含まれる。   Moreover, although the said embodiment gave and demonstrated the date wheel by which the date was displayed as an example as a calendar car, it is not limited to this. For example, a day wheel on which a day of the week is displayed may be a calendar car. Calendar information includes days of the week.

また、貫通孔は、筒車等を軸方向でみて、円形である他、多角形、楕円等、検出光を通過させることのできる形状やサイズであれば、特に限定されない。   The through hole is not particularly limited as long as it has a shape or size that allows detection light to pass therethrough, such as a circular shape, a polygonal shape, an ellipse, or the like, when the hour wheel is viewed in the axial direction.

カレンダー車を駆動させるモーター、および輪列は、第一モーター70、および駆動輪列22とは、別系統としてもよい。   The motor and the wheel train for driving the calendar wheel may be separate from the first motor 70 and the drive wheel train 22.

前記実施形態では、例えば、図6に示された12個の第二貫通孔283の内、一つの第二貫通孔283だけ、他の第二貫通孔283よりも径寸法が大きいが、本発明は、このように一つの第二貫通孔283だけ径寸法を大きくさせる態様に限定されない。12個の第二貫通孔283の径寸法をすべて同じにしてもよい。また、一つの第二貫通孔283の径寸法を大きくした場合、当該第二貫通孔283の位置を目印にして、筒車28や駆動輪列22の検出車25等との回転角度の位相を合わせることができる。なお、前記実施形態では、第二貫通孔283よりも外周側に、第一貫通孔282が形成されているので、これを目印にしてもよいし、別途、目印となるマーキングを筒車28等に施してもよい。   In the embodiment, for example, of the twelve second through holes 283 shown in FIG. 6, only one second through hole 283 has a larger diameter than the other second through holes 283. Is not limited to an embodiment in which the diameter dimension is increased by only one second through hole 283 as described above. The diameters of the 12 second through holes 283 may all be the same. Further, when the diameter dimension of one second through hole 283 is increased, the phase of the rotation angle with the hour wheel 28, the detection wheel 25 of the driving wheel train 22 and the like is set with the position of the second through hole 283 as a mark. Can be matched. In the embodiment, since the first through hole 282 is formed on the outer peripheral side of the second through hole 283, this may be used as a mark, or a marking serving as a mark may be separately provided. May be applied.

前記実施形態では、第一発光素子61Aから出射した第一検出光が3つの貫通孔(第一貫通孔282,貫通孔723,貫通孔713)を通過するように構成することで時針11の位置検出を行う方法を説明したが、本発明は、このような方法に限定されない。例えば、第一検出光の光路上に配置されないように第一中間車71および第二中間車72を設けて、第一検出光を第一貫通孔282だけを通過させて、第一受光素子61Bで受光する構成としても良い。
また、前記実施形態では、第二発光素子62Aから出射した第二検出光が5つの貫通孔(第二貫通孔283、第三貫通孔843、貫通孔833、貫通孔813および第四貫通孔823)を通過するように構成することで分針12および秒針13の位置検出を行う方法を説明したが、本発明は、このような方法に限定されない。例えば、第二検出光の光路上に配置されないように三番車83および五番車81を設けて、第二検出光を第二貫通孔283、第三貫通孔843および第四貫通孔823だけを通過させて、第二受光素子62Bで受光する構成としても良い。
In the embodiment, the position of the hour hand 11 is configured such that the first detection light emitted from the first light emitting element 61A passes through the three through holes (the first through hole 282, the through hole 723, and the through hole 713). Although the method for performing the detection has been described, the present invention is not limited to such a method. For example, the first intermediate wheel 71 and the second intermediate wheel 72 are provided so as not to be disposed on the optical path of the first detection light, and the first detection light is allowed to pass only through the first through hole 282, and the first light receiving element 61B. It is good also as a structure which light-receives by.
In the embodiment, the second detection light emitted from the second light emitting element 62 </ b> A has five through holes (second through hole 283, third through hole 843, through hole 833, through hole 813, and fourth through hole 823. ), The method for detecting the position of the minute hand 12 and the second hand 13 has been described. However, the present invention is not limited to such a method. For example, a third wheel 83 and a fifth wheel 81 are provided so as not to be arranged on the optical path of the second detection light, and the second detection light is supplied only to the second through hole 283, the third through hole 843, and the fourth through hole 823. The second light receiving element 62B may receive light and pass through the light.

1…電子時計、11…時針、12…分針、13…秒針、14…文字板、21…日車(カレンダー車)、22…駆動輪列、23…日回し車(駆動車)、24…日回し中間車(駆動車)、25…検出車、251…第五貫通孔、28…筒車、282…第一貫通孔、283…第二貫通孔、6A…第一検出部、61A…第一発光素子(第一発光部)、61B…第一受光素子(第一受光部)、6B…第二検出部、62A…第二発光素子(第二発光部)、62B…第二受光素子(第二受光部)、6C…第三検出部、63A…第三発光素子(第三発光部)、63B…第三受光素子(第三受光部)、70…第一モーター、80…第二モーター、82…秒車、823…第四貫通孔、84…二番車、843…第三貫通孔。 DESCRIPTION OF SYMBOLS 1 ... Electronic timepiece, 11 ... Hour hand, 12 ... Minute hand, 13 ... Second hand, 14 ... Dial, 21 ... Date wheel (calendar wheel), 22 ... Drive wheel train, 23 ... Date indicator (drive wheel), 24 ... Day Rotating intermediate wheel (drive wheel), 25 ... detection wheel, 251 ... fifth through hole, 28 ... cylinder wheel, 282 ... first through hole, 283 ... second through hole, 6A ... first detection unit, 61A ... first Light emitting element (first light emitting part), 61B ... first light receiving element (first light receiving part), 6B ... second detection part, 62A ... second light emitting element (second light emitting part), 62B ... second light receiving element (first light receiving part) (Second light receiving part), 6C ... third detection part, 63A ... third light emitting element (third light emitting part), 63B ... third light receiving element (third light receiving part), 70 ... first motor, 80 ... second motor, 82: Second wheel, 823: Fourth through hole, 84: Second wheel, 843: Third through hole.

Claims (2)

時針と、分針と、秒針と、前記時針が固定された筒車と、前記分針が固定された二番車と、前記秒針が固定された秒車と、前記筒車を駆動する第一モーターと、前記二番車、および前記秒車を駆動する第二モーターと、を備え、
前記筒車は、前記筒車を軸方向で見た時に、前記二番車、および前記秒車の外周よりも外側の位置に形成された1個の第一貫通孔と、前記第一貫通孔よりも内側の同心円上に等間隔で形成された12個の第二貫通孔と、を有し、
前記筒車を挟んで、一方側には、前記第一貫通孔の移動軌跡上に向かって第一検出光を出射する第一発光部が配置され、他方側には、前記第一貫通孔を通過した前記第一検出光を受光する第一受光部が配置され、
前記筒車を軸方向で見た時に、前記二番車には、前記同心円上に位置する1個の第三貫通孔が形成され、前記秒車には、前記同心円上に位置する1個の第四貫通孔が形成され、
前記筒車、前記二番車、および前記秒車を挟んで、一方側には、前記同心円上に向かって第二検出光を出射する第二発光部が配置され、他方側には、前記第二貫通孔の内の1個と、前記第三貫通孔と、前記第四貫通孔とを通過した前記第二検出光を受光する第二受光部が配置されている
ことを特徴とする電子時計。
An hour hand, a minute hand, a second hand, an hour wheel to which the hour hand is fixed, a second wheel to which the minute hand is fixed, a second wheel to which the second hand is fixed, and a first motor that drives the hour wheel A second motor for driving the second wheel and the second wheel,
When the hour wheel is viewed in the axial direction, the hour wheel has one first through hole formed at a position outside the outer circumference of the second wheel and the second wheel, and the first through hole. Twelve second through holes formed at equal intervals on the inner concentric circle, and
A first light-emitting portion that emits first detection light toward the movement trajectory of the first through hole is disposed on one side of the hour wheel, and the first through hole is disposed on the other side. A first light receiving unit that receives the first detection light that has passed is disposed,
When the hour wheel is viewed in the axial direction, the second wheel is formed with one third through hole located on the concentric circle, and the second wheel is provided with one piece located on the concentric circle. A fourth through hole is formed,
A second light-emitting portion that emits second detection light toward the concentric circle is disposed on one side across the hour wheel, the second wheel, and the second wheel, and the second light-emitting portion is disposed on the other side. An electronic timepiece having a second light receiving portion for receiving the second detection light that has passed through one of the two through holes, the third through hole, and the fourth through hole. .
請求項1に記載の電子時計において、
カレンダー情報を表示するカレンダー車と、
前記筒車から前記カレンダー車まで駆動力を伝達し、かつ、検出車を有する駆動輪列と、を備え、
前記検出車には、第五貫通孔が形成され、
前記検出車を挟んで、一方側には、前記第五貫通孔の移動軌跡上に向かって第三検出光を出射する第三発光部が配置され、他方側には、前記第五貫通孔を通過する前記第三検出光を受光する第三受光部が配置され、
前記第五貫通孔は、前記検出車が回転して前記第三発光部に対向する位置に24時間毎に移動し、同時に前記筒車の前記第一貫通孔は、前記第一発光部に対向する位置に移動する
ことを特徴とする電子時計。
The electronic timepiece according to claim 1,
A calendar car that displays calendar information;
A driving wheel train for transmitting a driving force from the hour wheel to the calendar wheel and having a detection wheel;
The detection wheel is formed with a fifth through hole,
A third light-emitting portion that emits third detection light toward the movement trajectory of the fifth through hole is disposed on one side of the detection wheel, and the fifth through hole is disposed on the other side. A third light receiving portion for receiving the third detection light passing therethrough is disposed;
The fifth through hole moves every 24 hours to a position where the detection wheel rotates and faces the third light emitting portion, and at the same time, the first through hole of the hour wheel faces the first light emitting portion. An electronic timepiece characterized in that it moves to a position where it moves.
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JP2007232680A (en) * 2006-03-03 2007-09-13 Citizen Holdings Co Ltd Pointer type radio-controlled timepiece
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