JP6867919B2 - Clock with display car - Google Patents

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JP6867919B2
JP6867919B2 JP2017176391A JP2017176391A JP6867919B2 JP 6867919 B2 JP6867919 B2 JP 6867919B2 JP 2017176391 A JP2017176391 A JP 2017176391A JP 2017176391 A JP2017176391 A JP 2017176391A JP 6867919 B2 JP6867919 B2 JP 6867919B2
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wheel
day
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tooth member
rotation
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内藤　雄一
雄一 内藤
大輔 中平
大輔 中平
祐一 干川
祐一 干川
新之介 坂田
新之介 坂田
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Citizen Watch Co Ltd
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Description

本発明は、表示車付時計に関する。 The present invention relates to a clock with a display vehicle.

カレンダ付の時計は、文字板に形成された表示窓から、日付の数字が露出される構成となっている。ここで、文字板の背面側には、リング状に形成され、日付の数字が周方向に並んで表示された日車が配置されている。日車に噛み合っている日回し車が回転することで日車が回転し、表示窓から露出される数字（日付の表示）が順次変わっていく。日回し車は、日回し中間車によって駆動される。 A clock with a calendar has a structure in which date numbers are exposed from a display window formed on a dial. Here, on the back side of the dial, a date wheel formed in a ring shape and having date numbers displayed side by side in the circumferential direction is arranged. As the day wheel that meshes with the day wheel rotates, the day wheel rotates, and the numbers (date display) exposed from the display window change in sequence. The day wheel is driven by the day wheel intermediate wheel.

ところで、日車は、日付が替るときだけ回転し、その他のときは不用意に動かないことが要求される。そこで、日付を替えるとき、すなわち日車を回転させるときだけ日車の回転を許容し、その他のときは日車の回転を止める躍制レバー（ジャンパ）を備えたものがある。躍制レバーは、日車の歯に接して回転を抑制する規制位置と日車の歯から離れた解除位置との間で動くように配置されている。そして、上述した日回し中間車によって、躍制レバーを解除位置から規制位置に変位させて規制位置に保持する時計が知られている（例えば、特許文献１参照）。 By the way, it is required that the date wheel rotates only when the date changes and does not move carelessly at other times. Therefore, there is a device equipped with a jumper lever (jumper) that allows the rotation of the date wheel only when the date is changed, that is, when the date wheel is rotated, and stops the rotation of the date wheel at other times. The jump control lever is arranged so as to move between the regulation position where the rotation is suppressed in contact with the teeth of the sun wheel and the release position away from the teeth of the sun wheel. Then, there is known a timepiece in which the jump control lever is displaced from the release position to the regulation position and held at the regulation position by the above-mentioned day-turning intermediate vehicle (see, for example, Patent Document 1).

特開２００２−１５６４６９号公報JP-A-2002-156469

日回し中間車を、躍制レバーの掛け外し（規制位置と解除位置との間で変位させること）にも用いた構成では、日回し車の作動角度と躍制レバーの変位量を両立するために、躍制レバーを掛け外しする部分（例えば、爪）をある程度長く形成する必要がある。この場合、日回し中間車自体の径が大きくなり、日回し中間車を駆動するための駆動源のトルクが大きくなる。駆動源の低トルク化を図るには、動力源から日回し中間車までの輪列の減速比を大きくする必要があるが、減速輪列の数を増やすと減速輪列の平面（文字板面に平行な面）での占有面積が増大する。 In the configuration in which the day-turning intermediate wheel is also used for attaching and detaching the jump control lever (displacement between the regulated position and the release position), in order to achieve both the operating angle of the day-turning wheel and the amount of displacement of the jump control lever. In addition, it is necessary to form a part (for example, a claw) for hooking and removing the jump control lever to a certain length. In this case, the diameter of the day-turning intermediate vehicle itself becomes large, and the torque of the drive source for driving the day-turning intermediate vehicle becomes large. In order to reduce the torque of the drive source, it is necessary to increase the reduction ratio of the train wheel from the power source to the intermediate vehicle, but if the number of reduction wheel trains is increased, the plane of the reduction wheel train (dial surface) The area occupied by the plane parallel to) increases.

また、輪列の数を増やさずに個々の減速比を大きくするためには、かなを小さくするか又は歯車を大きくする必要がある。しかし、かなを小さくするには限界があるため、歯車を大きくせざるを得ず、この場合も、平面内での占有面積が増大する。 Further, in order to increase the individual reduction ratio without increasing the number of train wheels, it is necessary to reduce the kana or increase the gear. However, since there is a limit to making the kana smaller, the gear must be made larger, and in this case as well, the area occupied in the plane increases.

なお、上述した問題は、日車を有するカレンダ付時計に限定されたものではなく、日車以外の曜車（曜日を示す文字が周方向に並んで表示された車）や月車（月を示す文字が周方向に並んで表示された車）やムーンフェイズや都市表示車（都市名を示す文字が周方向に並んで表示された車）など、種々の情報を表示する表示車を有する表示車付時計においても同様に起こり得る。 The above-mentioned problem is not limited to the clock with a calendar that has a day wheel, but a day car (a car in which characters indicating the day of the week are displayed side by side in the circumferential direction) and a moon car (a month) other than the day car. A display with a display vehicle that displays various information, such as a vehicle in which the characters shown are displayed side by side in the circumferential direction), a moon phase, or a city display vehicle (a vehicle in which the characters indicating the city name are displayed side by side in the circumferential direction). The same can happen with a car clock.

本発明は上記事情に鑑みなされたものであり、日回し中間車等の連続して回転する原動車を駆動するトルクを低減するとともに、平面での大きさが増大するのを防止することができる表示車付時計を提供することを目的とする。 The present invention has been made in view of the above circumstances, and it is possible to reduce the torque for driving a continuously rotating motor vehicle such as a day-turning intermediate vehicle and prevent the size on a flat surface from increasing. The purpose is to provide a clock with a display car.

本発明は、連続的に回転する原動車と、前記原動車に係合する従動車と、前記従動車の回転に従って回転する表示車に対して、回転を許容する位置と回転を阻止又は抑制する位置との間で変位可能に設けられた躍制部材と、を備え、前記原動車と前記従動車とは、前記原動車の連続的な回転を前記従動車の間欠的な回転に変換する欠歯機構として互いに係合する原動欠歯部材と従動欠歯部材とを有し、前記原動車は、前記原動欠歯部材と、前記躍制部材を前記表示車の回転を阻止又は抑制する位置に変位させる爪とを、前記原動車の軸方向の異なる位置に有し、前記従動車は、前記従動欠歯部材と、前記表示車の歯と噛み合う駆動歯とを、前記従動車の軸方向の異なる位置に有し、前記従動欠歯部材が停止している期間中は、前記爪が前記躍制部材を、前記表示車の回転を阻止又は抑制する位置に変位させた状態とするように、前記原動欠歯部材と前記爪との位置関係が設定されている表示車付時計である。 The present invention prevents or suppresses rotation-allowing positions and rotations of a continuously rotating driving vehicle, a driven vehicle engaged with the driving vehicle, and a display vehicle rotating according to the rotation of the driven vehicle. The driving vehicle and the driven vehicle are provided with a jumping control member displaceable from the position, and the driving vehicle and the driven vehicle are lacking in converting continuous rotation of the driving vehicle into intermittent rotation of the driven vehicle. The driving vehicle has a driving missing tooth member and a driven missing tooth member that engage with each other as a tooth mechanism, and the driving vehicle is in a position where the driving missing tooth member and the jumping control member are positioned to prevent or suppress the rotation of the display vehicle. The displacement claws are held at different positions in the axial direction of the driving vehicle, and the driven vehicle has the driven missing tooth member and the driving teeth that mesh with the teeth of the display vehicle in the axial direction of the driven vehicle. During the period when the driven missing tooth member is stopped at a different position, the claw is in a state where the jumping member is displaced to a position where the rotation of the display wheel is blocked or suppressed. It is a clock with a display wheel in which the positional relationship between the driving missing tooth member and the claw is set.

本発明に係る表示車付時計によれば、日回し中間車等の連続して回転する原動車を駆動するトルクを低減するとともに、平面での大きさが増大するのを防止することができる。 According to the clock with a display vehicle according to the present invention, it is possible to reduce the torque for driving a continuously rotating motor vehicle such as a day-turning intermediate vehicle and prevent the size on a flat surface from increasing.

本発明に係る表示車付時計の一実施形態であるカレンダ付電子時計を示す外観図である。It is an external view which shows the electronic clock with a calendar which is one Embodiment of the clock with a display car which concerns on this invention. 電子時計の文字板を透過して日車を回転させる駆動機構を表した図である。It is the figure which showed the drive mechanism which rotates a day wheel through the dial of an electronic clock. 日車の駆動源であるステップモータから駆動対象である日車までの駆動輪列を示す模式図である。It is a schematic diagram which shows the drive wheel train from the step motor which is a drive source of a day wheel to the day wheel which is a drive target. ステップモータから日車までの駆動輪列の各軸心（真）を通る断面を示す断面図である。It is sectional drawing which shows the cross section which passes through each axis (true) of the drive wheel train from a step motor to a day wheel. 駆動輪列を側方が見た側面図である。It is a side view which looked at the drive wheel train from the side. 日回し中間車の原動欠歯部材と日回し車の従動欠歯部材との噛み合い状態を示す模式図であり、原動欠歯部材の凸状の円弧面と従動欠歯部材の凹状の曲面である凹面とが接して原動欠歯部材の回転が従動欠歯部材に伝達されない状態を示す。It is a schematic diagram which shows the meshing state of the driving missing tooth member of a day turning intermediate wheel, and the driven missing tooth member of a day turning wheel, and is a convex arc surface of a driving missing tooth member and a concave curved surface of a driven missing tooth member. Indicates a state in which the rotation of the driven missing tooth member is not transmitted to the driven missing tooth member in contact with the concave surface. 日回し中間車の原動欠歯部材と日回し車の従動欠歯部材との噛み合い状態を示す模式図であり、原動欠歯部材の歯部と従動欠歯部材の歯部とが噛み合って原動欠歯部材の回転が従動欠歯部材に伝達される状態を示す。It is a schematic diagram which shows the meshing state of the driving missing tooth member of a day turning intermediate car, and the driven missing tooth member of a day turning wheel, and the tooth part of a driving missing tooth member and the tooth part of a driven missing tooth member mesh with each other, and the driving missing. Indicates a state in which the rotation of the tooth member is transmitted to the driven missing tooth member. 日回し中間車の爪がジャンパのカム面に接触して、日車の回転が阻止又は抑制されている状態で、日回し中間車の原動欠歯部材の円弧面が日回し車の従動欠歯部材の凹面に接触している状態を示す模式図である。While the claws of the day-turning intermediate wheel are in contact with the cam surface of the jumper and the rotation of the day wheel is blocked or suppressed, the arcuate surface of the driving missing tooth member of the day-turning intermediate car is the driven missing tooth of the day-turning wheel. It is a schematic diagram which shows the state which is in contact with the concave surface of a member. 日回し中間車の爪が、ジャンパのカム面から離れる直前の状態を示す模式図である。It is a schematic diagram which shows the state just before the claw of the day-turning intermediate car is separated from the cam surface of a jumper. 日回し中間車の爪がジャンパのカム面から離れた状態を示す模式図である。It is a schematic diagram which shows the state which the claw of a day turning intermediate car is separated from the cam surface of a jumper. 日回し中間車の原動欠歯部材の円弧面が日回し車の従動欠歯部材の凹面の側面から離れて、原動欠歯部材の歯部が凹面の側面を押して日回し車及び日車が回転を始める状態を示す模式図である。The arcuate surface of the driving missing tooth member of the day-turning intermediate wheel separates from the concave side of the driven missing tooth member of the day-turning wheel, and the tooth part of the driving missing tooth member pushes the side of the concave surface to rotate the day-turning wheel and the day wheel. It is a schematic diagram which shows the state which starts. 日回し中間車の歯部が日回し車の歯部に噛み合って、日回し車及び日車が回転している状態を示す、表面から見た模式図である。It is a schematic view seen from the surface which shows the state which the tooth part of the day wheel intermediate wheel meshes with the tooth part of a day wheel, and the day wheel and the day wheel are rotating. 図１２に示した状態を日車の裏側から見た模式図である。It is a schematic diagram which looked at the state shown in FIG. 12 from the back side of the date wheel. 日回し中間車の歯部が日回し車の歯部から離れる直前で、日回し車及び日車が回転している状態を示す、表面から見た模式図である。It is a schematic view seen from the surface which shows the state which the day wheel and the day wheel are rotating just before the tooth part of the day wheel intermediate wheel separates from the tooth part of the day wheel. 図１４に示した状態を日車の裏側から見た模式図である。FIG. 6 is a schematic view of the state shown in FIG. 14 as viewed from the back side of the date wheel. 日回し中間車の歯部が日回し車の歯部から離れ、日回し車及び日車が回転を停止した状態を示す、表面から見た模式図である。It is a schematic view seen from the surface which shows the state which the tooth part of the day wheel intermediate wheel separated from the tooth part of a day wheel, and the day wheel and the day wheel stopped rotating. 図１６に示した状態を日車の裏側から見た模式図である。It is a schematic diagram which looked at the state shown in FIG. 16 from the back side of the date wheel. 日回し中間車の原動欠歯部材の円弧面が日回し車の従動欠歯部材の凹面に接触して、日回し車及び日車の回転が停止している状態を示す模式図である。It is a schematic diagram which shows the state which the arc surface of the driving missing tooth member of a day turning intermediate wheel comes into contact with the concave surface of the driven missing tooth member of a day turning wheel, and the rotation of a day turning wheel and a day wheel is stopped. 図１８に示した状態を日車の裏側から見た模式図である。It is a schematic diagram which looked at the state shown in FIG. 18 from the back side of the date wheel.

以下、本発明に係る表示車付時計の実施形態について、図面を用いて説明する。 Hereinafter, embodiments of a clock with a display vehicle according to the present invention will be described with reference to the drawings.

＜電子時計の構成＞
図１は本発明に係る表示車付時計の一実施形態であるカレンダ付電子時計１（以下、単に時計１という）を示す外観図、図２は電子時計１の文字板１０を透過して日車２０（表示車の一例）を回転させる駆動機構を表した図である。図１の上方は例えば１２時の方向、右方は例えば３時の方向である。 <Configuration of electronic clock>
FIG. 1 is an external view showing an electronic clock 1 with a calendar (hereinafter, simply referred to as a clock 1) which is an embodiment of a clock with a display vehicle according to the present invention, and FIG. It is a figure which showed the drive mechanism which rotates a car 20 (an example of a display car). The upper part of FIG. 1 is, for example, the direction of 12 o'clock, and the right side is, for example, the direction of 3 o'clock.

時計１は、図１に示すように、時刻の数字又は文字（以下、数字等という）が表示された文字板１０（数字、文字の記載は省略）と、文字板１０の数字等を指し示す時針１６、分針１７及び秒針１８と、日車２０と、分クロノグラフ針５４と、ムーブメント３と、を備えている。時計１は、これらの他に、動力源となる電池や種々の機能の表示するため小針を備えているが、本発明とは直接的な関係がないため、説明を省略する。 As shown in FIG. 1, the clock 1 has a dial 10 (the description of numbers and letters is omitted) on which numbers or letters (hereinafter referred to as numbers, etc.) of the time are displayed, and an hour hand indicating the numbers or the like on the dial 10. It includes 16, a minute hand 17, a second hand 18, a date wheel 20, a minute chronograph hand 54, and a movement 3. In addition to these, the clock 1 is provided with a battery as a power source and small hands for displaying various functions, but since it is not directly related to the present invention, the description thereof will be omitted.

文字板１０には、３時の方向に小窓１１が開けられている。小窓１１は、図２に示すように、日車２０に表示されたカレンダの日付を表す「１」から「３１」までの数字２９のうちいずれか１つを露出させるものである。なお、小窓１１は、日車２０の数字の他に、日車２０よりも文字板１０の半径方向内側に設けられた曜車８に表示された曜日を表す文字も露出させる。曜車８についての説明は省略する。 A small window 11 is opened in the dial 10 in the direction of 3 o'clock. As shown in FIG. 2, the small window 11 exposes any one of the numbers 29 from "1" to "31" indicating the date of the calendar displayed on the date wheel 20. In addition to the numbers of the day wheel 20, the small window 11 also exposes the characters representing the day of the week displayed on the day wheel 8 provided on the inner side of the dial 10 in the radial direction of the day wheel 20. The description of the day wheel 8 will be omitted.

時針１６、分針１７及び秒針１８は文字板の中心Ｃを中心に回転する。分クロノグラフ針５４は、１２時の方向に設けられた小針であり、分単位でのクロノグラフ表示を行う。なお、分クロノグラフ針５４は、本発明のカレンダ付時計においては必須の構成ではないが、本実施形態の時計１は、図２に示すように、日車２０を回転させる駆動源であるステップモータ３０が、分クロノグラフ針５４をも駆動する構成となっている。 The hour hand 16, the minute hand 17, and the second hand 18 rotate around the center C of the dial. The minute chronograph hand 54 is a small hand provided in the 12 o'clock direction and displays a chronograph in minutes. The minute chronograph hand 54 is not an essential configuration in the calendared clock of the present invention, but the clock 1 of the present embodiment is a step which is a drive source for rotating the date wheel 20 as shown in FIG. The motor 30 also drives the minute chronograph hand 54.

日車２０は、円環板状に形成されていて、板面には「１」から「３１」までの数字２９が周方向の全周に亘って等間隔で表示されている。日車２０の内周縁には、全周に亘って、等間隔の歯２１が形成されている。この歯２１は、板面に表示された各数字２９に対して２つの割合で設けられている。したがって、歯２１が２つ分送られて、日車２０が文字板１０の中心Ｃ回りに回転すると、小窓１１から露出した日付の数字２９が１つ分送られる。なお、日車２０は、図２に示した数字２９の配列から解されるように、反時計回りに回転して、日付の数字２９を１つずつ送る。 The date wheel 20 is formed in the shape of an annular plate, and the numbers 29 from "1" to "31" are displayed on the plate surface at equal intervals over the entire circumference in the circumferential direction. Teeth 21 at equal intervals are formed on the inner peripheral edge of the date wheel 20 over the entire circumference. The teeth 21 are provided at a ratio of two to each number 29 displayed on the plate surface. Therefore, when two teeth 21 are sent and the date wheel 20 rotates around the center C of the dial 10, one number 29 of the date exposed from the small window 11 is sent. The date wheel 20 rotates counterclockwise to send the date numbers 29 one by one, as can be seen from the arrangement of the numbers 29 shown in FIG.

図３は日車２０の駆動源であるステップモータ３０から駆動対象である日車２０までの駆動輪列を示す模式図、図４はステップモータ３０から日車２０までの駆動輪列の各軸心（真）を通る断面を示す断面図、図５はこれら駆動輪列を側方が見た側面図である。ステップモータ３０及び駆動輪列はムーブメント３に設けられている。 FIG. 3 is a schematic view showing a drive train wheel from the step motor 30 which is the drive source of the day wheel 20 to the day wheel 20 which is the drive target, and FIG. 4 is a schematic view showing each axis of the drive wheel train from the step motor 30 to the day wheel 20. A cross-sectional view showing a cross section passing through the center (true), FIG. 5 is a side view of these drive train trains as viewed from the side. The step motor 30 and the drive train wheel are provided in the movement 3.

駆動輪列は、分クロノグラフ中間車４０と、分クロノグラフ車５０と、日回し駆動車６０と、日回し中間車７０（原動車）と、日回し車８０（従動車）と、ジャンパ９０（躍制部材）と、を備える。 The drive trains are the minute chronograph intermediate car 40, the minute chronograph car 50, the day turning drive car 60, the day turning intermediate car 70 (motor vehicle), the day turning car 80 (driving car), and the jumper 90. (Leaving member) and.

分クロノグラフ中間車４０は、歯車４１と歯車４１よりも歯数の少ないかな４２とを同軸に一体に備え、歯車４１がステップモータ３０のロータ３１と噛み合っている。分クロノグラフ車５０は、歯車５１と歯車５１よりも歯数の少ないかな５２とを同軸に一体に備え、歯車５１が分クロノグラフ中間車４０のかな４２と噛み合っている。分クロノグラフ車５０の軸５３（真）には、図１に示した分クロノグラフ針５４が固定されている。 The minute chronograph intermediate wheel 40 coaxially and integrally includes a gear 41 and a kana 42 having fewer teeth than the gear 41, and the gear 41 meshes with the rotor 31 of the step motor 30. The minute chronograph wheel 50 is coaxially provided with a gear 51 and a kana 52 having fewer teeth than the gear 51, and the gear 51 meshes with the kana 42 of the minute chronograph intermediate wheel 40. The minute chronograph hand 54 shown in FIG. 1 is fixed to the shaft 53 (true) of the minute chronograph wheel 50.

日回し駆動車６０は、歯車６１と歯車６１よりも歯数の少ないかな６２とを同軸に一体に備え、歯車６１が分クロノグラフ車５０のかな５２と噛み合っている。 The day-turning drive vehicle 60 coaxially and integrally includes a gear 61 and a kana 62 having fewer teeth than the gear 61, and the gear 61 meshes with the kana 52 of the minute chronograph vehicle 50.

図６，７は日回し中間車７０の原動欠歯部材７４と日回し車８０の従動欠歯部材８４との噛み合い状態を示す模式図であり、図６は原動欠歯部材７４の凸状の円弧面７２と従動欠歯部材８４の凹状の曲面である凹面８２とが接して原動欠歯部材７４の回転が従動欠歯部材８４に伝達されない状態を示し、図７は原動欠歯部材７４の歯部７３と従動欠歯部材８４の歯部８３とが噛み合って原動欠歯部材７４の回転が従動欠歯部材８４に伝達される状態を示す。 6 and 7 are schematic views showing the meshing state of the prime move-out tooth member 74 of the day-turning intermediate wheel 70 and the driven missing tooth member 84 of the day-turning wheel 80, and FIG. 6 shows a convex shape of the drive-missing tooth member 74. FIG. 7 shows a state in which the arc surface 72 and the concave surface 82 which is the concave curved surface of the driven missing tooth member 84 are in contact with each other and the rotation of the driven missing tooth member 74 is not transmitted to the driven missing tooth member 84. FIG. It shows a state in which the tooth portion 73 and the tooth portion 83 of the driven missing tooth member 84 mesh with each other and the rotation of the driven missing tooth member 74 is transmitted to the driven missing tooth member 84.

日回し中間車７０は、歯車７１と原動欠歯部材７４と爪７８とを同軸に一体に備え、歯車７１は日回し駆動車６０のかな６２と噛み合っている。原動欠歯部材７４は、図６，７に示すように、後述する日回し車８０の従動欠歯部材８４とともに欠歯機構を構成し、原動欠歯部材７４の連続的な回転に対して、従動欠歯部材８４を間欠的に回転させる。 The day-turning intermediate wheel 70 is coaxially and integrally provided with a gear 71, a prime drive missing tooth member 74, and a claw 78, and the gear 71 meshes with the kana 62 of the day-turning drive car 60. As shown in FIGS. 6 and 7, the driving missing tooth member 74 constitutes a tooth missing mechanism together with the driven missing tooth member 84 of the turning wheel 80, which will be described later, with respect to the continuous rotation of the driving missing tooth member 74. The driven missing tooth member 84 is intermittently rotated.

原動欠歯部材７４は、外周部が、凸状の円弧の面である円弧面７２と、４つの歯７３ａで形成された歯部７３とで形成されている。円弧面７２と歯部７３とは、それぞれ周方向の２か所に交互に形成されている。２つの円弧面７２，７２は、回転中心を挟んで対向する（１８０［度］の等角度間隔の）配置であり、２つの歯部７３，７３も回転中心を挟んで対向する（１８０［度］の等角度間隔の）配置である。 The driving missing tooth member 74 has an outer peripheral portion formed of an arcuate surface 72 which is a convex arcuate surface and a tooth portion 73 formed by four teeth 73a. The arcuate surface 72 and the tooth portion 73 are alternately formed at two locations in the circumferential direction. The two arcuate surfaces 72 and 72 are arranged so as to face each other with the rotation center in between (at equal angles of 180 [degrees]), and the two tooth portions 73 and 73 also face each other with the rotation center in between (180 [degrees]). ] Is arranged at equal angles.

各歯部７３は、円弧面７２よりも回転中心からの半径方向の寸法が大きく形成されていて、円弧面７２よりも半径方向の外側に突出している。なお、円弧面７２と歯部７３との境界部分には、円弧面７２よりも半径方向の内側に切り欠かれた逃げ部７５が形成されている。 Each tooth portion 73 has a larger radial dimension from the center of rotation than the arcuate surface 72, and projects outward from the arcuate surface 72 in the radial direction. At the boundary between the arcuate surface 72 and the tooth portion 73, a relief portion 75 notched inward in the radial direction with respect to the arcuate surface 72 is formed.

爪７８は、日回し中間車７０の軸方向に、原動欠歯部材７４を挟んで歯車７１と反対側に（１８０［度］の等角度間隔で）２つ設けられている。各爪７８の先端は、円弧面７２よりも半径方向の内側に配置されている。２つの爪７８，７８は回転中心を挟んで対向する配置である。つまり、日回し中間車７０は、歯車７１、原動欠歯部材７４、爪７８を、軸方向の異なる位置に、この順序の並びで備えている。 Two claws 78 are provided (at equal angles of 180 [degrees]) on the side opposite to the gear 71 with the driving missing tooth member 74 in the axial direction of the day turning intermediate wheel 70. The tip of each claw 78 is arranged inside the arc surface 72 in the radial direction. The two claws 78 and 78 are arranged so as to face each other with the center of rotation in between. That is, the day-turning intermediate wheel 70 includes the gear 71, the driving missing tooth member 74, and the claw 78 at different positions in the axial direction in this order.

日回し車８０は、日送り歯８１と従動欠歯部材８４とを同軸に一体に備え、日送り歯８１（駆動歯の一例）は日車２０の歯２１と噛み合っている。従動欠歯部材８４は、日送り歯８１、従動欠歯部材８４を、軸方向の異なる位置に、この順序の並びで備えている。日回し車８０の軸方向において、前述した日回し中間車７０の原動欠歯部材７４と同じ位置に配置されていて、原動欠歯部材７４と係合する。従動欠歯部材８４は、図６，７に示すように、外周部が、凹状の曲面である凹面８２と、３つの歯８３ａで形成された歯部８３とで形成されている。 The day wheel 80 is coaxially and integrally provided with a day feed tooth 81 and a driven missing tooth member 84, and the day feed tooth 81 (an example of a driving tooth) meshes with the tooth 21 of the day wheel 20. The driven missing tooth member 84 includes a day feed tooth 81 and a driven missing tooth member 84 at different positions in the axial direction in this order. In the axial direction of the day wheel 80, it is arranged at the same position as the driving missing tooth member 74 of the day turning intermediate wheel 70 described above, and engages with the driving missing tooth member 74. As shown in FIGS. 6 and 7, the driven tooth member 84 is formed by a concave surface 82 having a concave curved surface and a tooth portion 83 formed by three teeth 83a.

凹面８２と歯部８３とは、周方向に交互に形成されて、それぞれ周方向の４か所に形成されている。４つの凹面８２，８２，８２，８２は、回転中心回りに９０［度］の等角度間隔の配置であり、４つの歯部８３，８３，８３，８３も回転中心回りに９０［度］の等角度間隔の配置である。各凹面８２は、歯部８３よりも半径方向の外側に突出している。各凹面８２の凹の曲率半径は、円弧面７２の曲率半径よりも小さい。 The concave surface 82 and the tooth portion 83 are alternately formed in the circumferential direction, and are formed at four locations in the circumferential direction, respectively. The four concave surfaces 82, 82, 82, 82 are arranged at equal angles of 90 [degrees] around the center of rotation, and the four teeth 83, 83, 83, 83 also have 90 [degrees] around the center of rotation. It is an evenly spaced arrangement. Each concave surface 82 protrudes outward in the radial direction from the tooth portion 83. The radius of curvature of the concave of each concave surface 82 is smaller than the radius of curvature of the arc surface 72.

原動欠歯部材７４と従動欠歯部材８４とは図６，７に示すように係合するが、凹面８２の曲率半径が円弧面７２の曲率半径よりも小さいため、図６に示すように円弧面７２と凹面８２とが接した状態では、凹面８２の２か所で円弧面７２に接し、その接した２か所の間の空間に、円弧面７２の凸部が突入した状態となる。 The primary missing tooth member 74 and the driven missing tooth member 84 are engaged as shown in FIGS. 6 and 7, but since the radius of curvature of the concave surface 82 is smaller than the radius of curvature of the arc surface 72, the arc is as shown in FIG. In the state where the surface 72 and the concave surface 82 are in contact with each other, the arc surface 72 is in contact with the arc surface 72 at two points, and the convex portion of the arc surface 72 rushes into the space between the two contact points.

円弧面７２は、回転中心からの半径が一定であるため、凹面８２に接した状態でも回転中心回りに回転可能であるが、凹面８２は、その突入した円弧面７２を乗り越えて回転中心回りに回転することはできない。したがって、原動欠歯部材７４の回転は従動欠歯部材８４に伝達されないだけでなく、原動欠歯部材７４は従動欠歯部材８４を停止した状態に拘束する。 Since the arc surface 72 has a constant radius from the center of rotation, it can rotate around the center of rotation even when it is in contact with the concave surface 82. It cannot rotate. Therefore, not only the rotation of the driven missing tooth member 74 is not transmitted to the driven missing tooth member 84, but also the driven missing tooth member 74 restrains the driven missing tooth member 84 in a stopped state.

なお、円弧面７２と凹面８２とは、分クロノグラフ針５４の１回転（分クロノグラフ車５０の１回転）に対応した日回し中間車７０の回転角度に亘って接し続けるように、周方向の長さが設定されている。したがって、分単位でのクロノグラフ表示を行う目的でステップモータ３０を作動させたとき、分クロノグラフ車５０が回転し、日回し中間車７０もそれに連動して回転するが、分クロノグラフ針５４が１回転（分クロノグラフ車５０が１回転）する間は、日回し中間車７０が回転しても円弧面７２と凹面８２とが接し続けるため、日回し車８０は回転しない。 The arcuate surface 72 and the concave surface 82 are in the circumferential direction so as to continue to be in contact with each other over the rotation angle of the day-turning intermediate wheel 70 corresponding to one rotation of the minute chronograph hand 54 (one rotation of the minute chronograph wheel 50). The length of is set. Therefore, when the step motor 30 is operated for the purpose of displaying the chronograph in minutes, the minute chronograph wheel 50 rotates and the daily intermediate wheel 70 also rotates in conjunction with it, but the minute chronograph hand 54 During one rotation (one rotation of the minute chronograph vehicle 50), the arc surface 72 and the concave surface 82 continue to be in contact with each other even if the day rotation intermediate vehicle 70 rotates, so that the day rotation vehicle 80 does not rotate.

分単位でのクロノグラフ表示の作動は、ムーブメントに備えられた制御ＩＣによって、最長で分クロノグラフ針５４の１回転（６０分間）に設定され、その１回転の後は、リセットのため、分クロノグラフ針５４が逆回転するようにステップモータ３０も逆回転する。したがって、カレンダの日付を変更する（日車２０を回転させる）ための駆動源であるステップモータ３０が、分クロノグラフ針５４の駆動源を兼ねていても、分クロノグラフ針５４の駆動により、カレンダの日付を変更する機能に影響を及ぼすことはない。なお、ステップモータ３０が分クロノグラフ針５４の駆動源を兼ねず、日車２０を回転させるだけの駆動源であってもよいことはいうまでもない。 The operation of the chronograph display in minutes is set to one rotation (60 minutes) of the minute chronograph hand 54 at the longest by the control IC provided in the movement, and after that one rotation, it is reset to minutes. The step motor 30 also rotates in the reverse direction so that the chronograph needle 54 rotates in the reverse direction. Therefore, even if the step motor 30, which is a drive source for changing the date of the calendar (rotating the date wheel 20), also serves as a drive source for the minute chronograph hand 54, the drive of the minute chronograph hand 54 It does not affect the ability to change the date on the calendar. Needless to say, the step motor 30 does not also serve as a drive source for the minute chronograph hands 54, and may be a drive source that only rotates the date wheel 20.

原動欠歯部材７４が回転して円弧面７２が従動欠歯部材８４の凹面８２から離脱すると、従動欠歯部材８４の拘束が解除され、その回転中心回りの回転が可能となる。そして、円弧面７２よりも突出した歯部７３が凹面８２の側面に当たると、歯部７３に押されて従動欠歯部材８４がその回転中心回りに回転する。さらに原動欠歯部材７４が回転すると、図７に示すように、原動欠歯部材７４の歯部７３が従動欠歯部材８４の歯部８３と噛み合い、この噛み合いによって、原動欠歯部材７４の回転が従動欠歯部材８４に伝達されて、従動欠歯部材８４は原動欠歯部材７４の回転に従って回転する。 When the driving missing tooth member 74 rotates and the arc surface 72 separates from the concave surface 82 of the driven missing tooth member 84, the restraint of the driven missing tooth member 84 is released, and the driven missing tooth member 84 can rotate around the center of rotation. Then, when the tooth portion 73 protruding from the arc surface 72 hits the side surface of the concave surface 82, the driven tooth portion 84 is pushed by the tooth portion 73 and rotates around the center of rotation thereof. Further, when the driving missing tooth member 74 rotates, as shown in FIG. 7, the tooth portion 73 of the driving missing tooth member 74 meshes with the tooth portion 83 of the driven missing tooth member 84, and the meshing causes the rotation of the driving missing tooth member 74. Is transmitted to the driven tooth member 84, and the driven tooth member 84 rotates according to the rotation of the driven tooth member 74.

原動欠歯部材７４の回転が進み、歯部７３が歯部８３から離れると、従動欠歯部材８４の回転は停止し、原動欠歯部材７４の円弧面７２が従動欠歯部材８４の凹面８２に接した図６の状態となって、原動欠歯部材７４は回転を続ける一方、従動欠歯部材８４は停止した状態で維持される。このように、原動欠歯部材７４と従動欠歯部材８４とによって構成された欠歯機構は、原動欠歯部材７４の連続的な回転を従動欠歯部材８４の間欠的な回転に変換する。 When the rotation of the driving missing tooth member 74 progresses and the tooth portion 73 separates from the tooth portion 83, the rotation of the driven missing tooth member 84 stops, and the arc surface 72 of the driving missing tooth member 74 becomes the concave surface 82 of the driven missing tooth member 84. In the state shown in FIG. 6, the driven tooth member 74 continues to rotate, while the driven tooth member 84 is maintained in a stopped state. As described above, the tooth missing mechanism composed of the driven missing tooth member 74 and the driven missing tooth member 84 converts the continuous rotation of the driven missing tooth member 74 into the intermittent rotation of the driven missing tooth member 84.

日送り歯８１は、日回し車８０の１周に等角度間隔で８個備えられている。日送り歯８１は、日車２０の歯２１と噛み合っている。ここで、原動欠歯部材７４の歯部７３は原動欠歯部材７４の１周に２か所備えられ、従動欠歯部材８４の歯部８３は従動欠歯部材８４の１周に４か所備えられているため、原動欠歯部材７４が１／２回転する間に従動欠歯部材８４は１／４回転する。そして、従動欠歯部材８４の１／４回転、すなわち日回し車８０の１／４回転により、日送り歯８１が２個送られるため、日車２０は数字２９の１つ分が送られるように回転する。 Eight day feed teeth 81 are provided at equal intervals on one circumference of the day wheel 80. The day feed teeth 81 mesh with the teeth 21 of the day wheel 20. Here, the tooth portions 73 of the driven missing tooth member 74 are provided at two locations in one circumference of the driven missing tooth member 74, and the tooth portions 83 of the driven missing tooth member 84 are provided at four locations in one circumference of the driven missing tooth member 84. Since the tooth member 74 is provided, the driven tooth member 84 rotates 1/4 while the driving tooth member 74 makes 1/2 rotation. Then, since two day feed teeth 81 are fed by 1/4 rotation of the driven missing tooth member 84, that is, 1/4 rotation of the day wheel 80, one of the numbers 29 is sent to the day wheel 20. Rotate to.

ジャンパ９０は、図３に示すように、略Ｌ字状に形成されている。ジャンパ９０は、そのＬ字の屈曲部付近の中心Ｃ１回りに回転可能に形成されている。ジャンパ９０は、そのＬ字の、中心Ｃ１に対して一方に延びた側の先端部に、日車２０の歯２１と噛み合う噛合部９１が形成され、中心Ｃ１に対して他方に延びた側に、日回し中間車７０の爪７８に接するカム面９２が形成されている。 As shown in FIG. 3, the jumper 90 is formed in a substantially L shape. The jumper 90 is rotatably formed around the center C1 near the L-shaped bent portion. The jumper 90 has a meshing portion 91 formed on the tip of the L-shape on the side extending to one side with respect to the center C1 so as to mesh with the teeth 21 of the date wheel 20, and extending to the other side with respect to the center C1. , A cam surface 92 in contact with the claw 78 of the day-turning intermediate wheel 70 is formed.

爪７８がカム面９２に接して、カム面９２を、日回し中間車７０の半径方向外側に変位させた状態では、噛合部９１が、日車２０の隣接する２つの歯２１，２１の間に嵌め合わされた状態に拘束され、日車２０の回転を阻止又は抑制する。一方、爪７８がカム面９２から離れている状態では、ジャンパ９０は中心Ｃ１回りの回転が規制されず、噛合部９１が、回転する日車２０の歯２１によって押圧され、噛合部９１が歯２１に対して日車２０の半径方向内側に離れた状態となり、日車２０の回転を許容する。 When the claw 78 is in contact with the cam surface 92 and the cam surface 92 is displaced outward in the radial direction of the day turning intermediate wheel 70, the meshing portion 91 is between the two adjacent teeth 21 and 21 of the day wheel 20. It is restrained in the state of being fitted to the wheel 20 and prevents or suppresses the rotation of the date wheel 20. On the other hand, when the claw 78 is away from the cam surface 92, the jumper 90 is not restricted from rotating around the center C1, the meshing portion 91 is pressed by the teeth 21 of the rotating date wheel 20, and the meshing portion 91 is toothed. The sun wheel 20 is separated from the 21 in the radial direction, and the rotation of the sun wheel 20 is allowed.

なお、原動欠歯部材７４と爪７８とは、円弧面７２が従動欠歯部材８４の凹面８２と接している回転角度範囲では、爪７８がカム面９２を押圧して噛合部９１を歯２１に噛み合わせた状態とし、歯部７３が従動欠歯部材８４の歯部８３と噛み合っている回転角度範囲では、爪７８がカム面９２から離れてジャンパ９０の回転の規制を解除した状態とするような位相関係（日回し中間車７０の回転中心回りの位相）に設定されている。 In the rotation angle range in which the arcuate surface 72 is in contact with the concave surface 82 of the driven tooth member 84, the tooth 78 presses the cam surface 92 to press the meshing portion 91 into the teeth 21. In the rotation angle range in which the tooth portion 73 meshes with the tooth portion 83 of the driven missing tooth member 84, the claw 78 is separated from the cam surface 92 and the restriction on the rotation of the jumper 90 is released. Such a phase relationship (phase around the center of rotation of the day-turning intermediate car 70) is set.

したがって、原動欠歯部材７４と従動欠歯部材８４との欠歯機構によって日回し車８０が回転しない期間中は、ジャンパ９０によって日車２０の回転は阻止又は抑制され、欠歯機構によって日回し車８０が回転する期間中は、ジャンパ９０は日車２０の回転を許容する。 Therefore, during the period when the day wheel 80 does not rotate due to the tooth loss mechanism of the prime mover missing tooth member 74 and the driven tooth missing member 84, the jumper 90 prevents or suppresses the rotation of the day wheel 20, and the tooth loss mechanism rotates the day wheel 80. During the period during which the car 80 rotates, the jumper 90 allows the day wheel 20 to rotate.

＜作用＞
このように構成された時計１の動作について、以下に説明する。まず、日車２０が停止している状態では、図８に示すように、日回し中間車７０の爪７８が、ジャンパ９０のカム面９２に接触している状態であり、カム面９２を、日回し中間車７０の半径方向の外側に押圧している。これにより、ジャンパ９０は、中心Ｃ１回りの回転可能範囲の反時計回り方向に付勢されている。この状態では、ジャンパ９０の噛合部９１が日車２０の２つの歯２１，２１の間に噛み合わされ、日車２０は回転が阻止又は抑制されている。 <Action>
The operation of the clock 1 configured in this way will be described below. First, when the day wheel 20 is stopped, as shown in FIG. 8, the claw 78 of the day turning intermediate car 70 is in contact with the cam surface 92 of the jumper 90, and the cam surface 92 is pressed. It is pressing outward in the radial direction of the day-turning intermediate wheel 70. As a result, the jumper 90 is urged in the counterclockwise direction in the rotatable range around the center C1. In this state, the meshing portion 91 of the jumper 90 is meshed between the two teeth 21 and 21 of the date wheel 20, and the rotation of the date wheel 20 is blocked or suppressed.

この状態から、時計１に備えられたプッシュボタンが押される等して、カレンダの日付を変更する操作が入力されると、その入力を、ムーブメント３に備えられた制御ＩＣが受け付ける。制御ＩＣは、受け付けた操作の入力に対応して、日車２０を図８の反時計回り方向に回転させるために、ステップモータ３０を駆動する指令を出力する。ステップモータ３０は、駆動する指令に応じてロータ３１（図３参照）を所定の回転数だけ回転させる。この所定の回転数は、プッシュボタン等が押されている時間に対応して制御ＩＣにより設定されている。 From this state, when an operation for changing the date of the calendar is input, such as by pressing a push button provided on the clock 1, the control IC provided on the movement 3 accepts the input. The control IC outputs a command for driving the step motor 30 in order to rotate the date wheel 20 in the counterclockwise direction of FIG. 8 in response to the input of the received operation. The step motor 30 rotates the rotor 31 (see FIG. 3) by a predetermined rotation speed in response to a driving command. This predetermined rotation speed is set by the control IC corresponding to the time when the push button or the like is pressed.

なお、カレンダの日付は、例えば日付の変わる２４時の付近になったとの計時に基づいて、制御ＩＣからの指令により変更される場合も当然にある。この場合は、プッシュボタン等の外部操作は入力されないが、制御ＩＣは、所定の時刻になったことを検出して、日車２０を図８の反時計回り方向に回転させるために、ステップモータ３０を駆動する指令を出力する。ステップモータ３０は、駆動する指令に応じてロータ３１（図３参照）を所定の回転数だけ回転させる。この所定の回転数は、日付を１日送る分（日車２０の歯２１の２個分）に相当する。 It should be noted that the date of the calendar may be changed by a command from the control IC, for example, based on the timekeeping that the date is around 24:00 when the date changes. In this case, no external operation such as a push button is input, but the control IC detects that the predetermined time has come and rotates the date wheel 20 in the counterclockwise direction of FIG. Outputs a command to drive 30. The step motor 30 rotates the rotor 31 (see FIG. 3) by a predetermined number of revolutions in response to a command to drive the rotor 31 (see FIG. 3). This predetermined number of rotations corresponds to the amount of one day of sending the date (two of the teeth 21 of the date wheel 20).

ロータ３１が回転すると、ロータ３１に歯車４１が噛み合った分クロノグラフ中間車４０が回転する。分クロノグラフ中間車４０が回転すると、分クロノグラフ中間車４０のかな４２に歯車５１が噛み合った分クロノグラフ車５０が回転する。分クロノグラフ車５０が回転すると、その軸５３に固定された分クロノグラフ針５４が回転する。なお、カレンダの１日分（日車２０の日付の数字２９の１個分：歯２１の２個分の）の送り量は、分クロノグラフ車５０の１回転の整数倍に減速比が設定されているため、カレンダの１日分の送りが完了した時点で、分クロノグラフ針５４は、常に小針の１２時方向を向いた状態となる。 When the rotor 31 rotates, the chronograph intermediate wheel 40 rotates by the amount that the gear 41 meshes with the rotor 31. When the minute chronograph intermediate wheel 40 rotates, the minute chronograph wheel 50 in which the gear 51 meshes with the kana 42 of the minute chronograph intermediate wheel 40 rotates. When the minute chronograph wheel 50 rotates, the minute chronograph hand 54 fixed to the shaft 53 rotates. The reduction ratio is set to an integral multiple of one rotation of the minute chronograph car 50 for the feed amount for one day of the calendar (one for the number 29 on the date of the day car 20: two for the teeth 21). Therefore, when the feed for one day of the calendar is completed, the minute chronograph hand 54 is always in a state of facing the 12 o'clock direction of the small hand.

分クロノグラフ車５０が回転すると、分クロノグラフ車５０のかな５２に歯車６１が噛み合った日回し駆動車６０が回転する。日回し駆動車６０が回転すると、日回し駆動車６０のかな６２に歯車７１が噛み合った日回し中間車７０が、図８の時計回り方向に連続的に回転する。 When the minute chronograph car 50 rotates, the day-turning drive car 60 in which the gear 61 meshes with the kana 52 of the minute chronograph car 50 rotates. When the day-turning drive vehicle 60 rotates, the day-turning intermediate vehicle 70 in which the gear 71 meshes with the kana 62 of the day-turning drive vehicle 60 continuously rotates in the clockwise direction of FIG.

ジャンパ９０のカム面９２は、日回し中間車７０の爪７８が接触している範囲では、日回し中間車７０の中心からの半径が一定となる曲率半径で形成されているため、日回し中間車７０が時計回り方向に回転を続けて図９に示す範囲までは、ジャンパ９０の中心Ｃ１回り姿勢は変化しない。したがって、噛合部９１が日車２０の歯２１，２１間に噛み合った状態を維持し、日車２０の回転が阻止又は抑制されている。 Since the cam surface 92 of the jumper 90 is formed with a radius of curvature in which the radius from the center of the day-turning intermediate car 70 is constant within the range in which the claw 78 of the day-turning intermediate car 70 is in contact, the day-turning intermediate car 70 is in the middle. The center C1 rotation posture of the jumper 90 does not change until the vehicle 70 continues to rotate clockwise and is in the range shown in FIG. Therefore, the meshing portion 91 maintains the state of being meshed between the teeth 21 and 21 of the date wheel 20, and the rotation of the date wheel 20 is blocked or suppressed.

また、図８から図９に示した、噛合部９１が歯２１，２１間に噛み合っている回転角度の範囲では、日回し中間車７０の原動欠歯部材７４の円弧面７２が日回し車８０の凹面８２に接した状態となる。したがって、日回し中間車７０の回転は日回し車８０に伝達されず、日回し車８０は停止した状態を維持し、ジャンパ９０の有無に拘わらず日車２０は停止した状態を維持する。 Further, in the range of the rotation angle in which the meshing portion 91 meshes between the teeth 21 and 21 as shown in FIGS. 8 to 9, the arc surface 72 of the driving missing tooth member 74 of the day-turning intermediate wheel 70 is the day-turning wheel 80. It is in contact with the concave surface 82 of. Therefore, the rotation of the day-turning intermediate car 70 is not transmitted to the day-turning car 80, the day-turning car 80 keeps the stopped state, and the day-turning car 20 keeps the stopped state regardless of the presence or absence of the jumper 90.

日回し中間車７０の回転が進み、図１０に示すように、爪７８がカム面９２から離れると、ジャンパ９０は爪７８による拘束が解除されて、噛合部９１が歯２１．２１間に付勢されていた荷重が無くなる。したがって、ジャンパ９０は回転可能で任意に動くことが可能な状態となる。なお、図１０に示した状態に至っても、原動欠歯部材７４の円弧面７２が従動欠歯部材８４の凹面８２に接した状態であるため、日回し車８０は停止した状態を維持する。 As the rotation of the day-turning intermediate wheel 70 progresses and the claw 78 separates from the cam surface 92 as shown in FIG. 10, the jumper 90 is released from the restraint by the claw 78, and the meshing portion 91 is attached between the teeth 21.21. The loaded load disappears. Therefore, the jumper 90 is in a state where it can rotate and move arbitrarily. Even in the state shown in FIG. 10, since the arcuate surface 72 of the driving missing tooth member 74 is in contact with the concave surface 82 of the driven missing tooth member 84, the day wheel 80 maintains the stopped state.

日回し中間車７０の回転がさらに進み、図１１に示すように、原動欠歯部材７４の円弧面７２が従動欠歯部材８４の凹面８２から離れると、従動欠歯部材８４の拘束が解除され、日回し車８０はその回転中心回りの回転が可能となる。そして、円弧面７２よりも突出した歯部７３が凹面８２の側面に当たると、歯部７３に押されて日回し車８０がその回転中心回りに反時計回りに回転する。日回し車８０が回転すると、日回し中間車７０の日送り歯８１に歯２１が噛み合った日車２０が反時計回りに回転する。 When the rotation of the day-turning intermediate wheel 70 further progresses and the arc surface 72 of the driving missing tooth member 74 separates from the concave surface 82 of the driven missing tooth member 84, the restraint of the driven missing tooth member 84 is released. , The day wheel 80 can rotate around the center of rotation. Then, when the tooth portion 73 protruding from the arc surface 72 hits the side surface of the concave surface 82, the tooth portion 73 is pushed and the day wheel 80 rotates counterclockwise around the center of rotation thereof. When the day wheel 80 rotates, the day wheel 20 in which the teeth 21 mesh with the day feed teeth 81 of the day rotation intermediate car 70 rotates counterclockwise.

このとき、反時計回りに回転する歯２１のうち、噛合部９１よりも回転方向の上流側（回転方向の後方側）の歯２１が、噛合部９１の回転方向上流側の斜面９１ａを押す。斜面９１ａを回転方向に押された噛合部９１は、ジャンパ９０の中心Ｃ１回りに時計回りに回転して日車２０の半径方向内側に逃げる。これにより、ジャンパ９０による日車２０の拘束は解除される。 At this time, among the teeth 21 rotating counterclockwise, the teeth 21 on the upstream side in the rotation direction (rear side in the rotation direction) of the meshing portion 91 push the slope 91a on the upstream side in the rotation direction of the meshing portion 91. The meshing portion 91 pushed on the slope 91a in the rotational direction rotates clockwise around the center C1 of the jumper 90 and escapes inward in the radial direction of the date wheel 20. As a result, the restraint of the date wheel 20 by the jumper 90 is released.

日回し中間車７０の回転が進むにしたがって、図１２，１３に示すように、原動欠歯部材７４の歯部７３が従動欠歯部材８４の歯部８３と噛み合うと、この噛み合いによって、原動欠歯部材７４の回転が従動欠歯部材８４に伝達されて、日回し車８０は日回し中間車７０の回転に従って回転する。日回し車８０の回転により、日車２０が回転する。 As the rotation of the day-turning intermediate wheel 70 progresses, as shown in FIGS. 12 and 13, when the tooth portion 73 of the driving missing tooth member 74 meshes with the tooth portion 83 of the driven missing tooth member 84, the tooth portion 83 of the driven missing tooth member 84 meshes with the tooth portion 83. The rotation of the tooth member 74 is transmitted to the driven missing tooth member 84, and the day turning wheel 80 rotates according to the rotation of the day turning intermediate car 70. The rotation of the day wheel 80 causes the day wheel 20 to rotate.

日回し中間車７０に従った日回し車８０の回転及び日車２０の回転は、図１４，１５に示す、原動欠歯部材７４の歯部７３が従動欠歯部材８４の歯部８３から離れるまで続く。そして、図１６，１７に示すように歯部７３が歯部８３から離れ、さらに図１８，１９に示すように円弧面７２が凹面８２に接すると、従動欠歯部材８４の回転が拘束される。これにより、日回し車８０の回転が停止し、日車２０の回転も停止する。 The rotation of the day wheel 80 and the rotation of the day wheel 20 according to the day rotation intermediate wheel 70 causes the tooth portion 73 of the driving missing tooth member 74 to separate from the tooth portion 83 of the driven missing tooth member 84, as shown in FIGS. Continue until. Then, when the tooth portion 73 is separated from the tooth portion 83 as shown in FIGS. 16 and 17, and the arc surface 72 is in contact with the concave surface 82 as shown in FIGS. 18 and 19, the rotation of the driven missing tooth member 84 is restricted. .. As a result, the rotation of the day wheel 80 is stopped, and the rotation of the day wheel 20 is also stopped.

図１１に示した日回し車８０の回転開始から図１８，１９に示した日回し車８０の回転停止までの間に、日回し車８０は１／４回転（日回し車８０の日送り歯８１の２個分回転）し、日車２０の歯２１が２個分、反時計回り方向に回転する。したがって、時計１の小窓１１から露出していた日付の数字２９が１個分送られる。 From the start of rotation of the day wheel 80 shown in FIG. 11 to the stop of rotation of the day wheel 80 shown in FIGS. 18 and 19, the day wheel 80 rotates 1/4 (the day feed teeth of the day wheel 80). Rotate by 2 pieces of 81), and the teeth 21 of the wheel 20 rotate counterclockwise by 2 pieces. Therefore, one number 29 of the date exposed from the small window 11 of the clock 1 is sent.

図１８，１９に示した円弧面７２が凹面８２に接した後も日回し中間車７０は回転を継続し、日回し中間車７０の爪７８が、ジャンパ９０のカム面９２に接し始める。そして、日回し中間車７０のさらなる回転により、図８に示した状態と同じ位相状態に戻り、爪７８がカム面９２を日回し中間車７０の半径方向の外側に押圧し、ジャンパ９０の噛合部９１が日車２０の２つの歯２１，２１の間に噛み合わされ、日車２０は回転が阻止又は抑制された状態となる。 Even after the arcuate surface 72 shown in FIGS. 18 and 19 comes into contact with the concave surface 82, the day-turning intermediate wheel 70 continues to rotate, and the claw 78 of the day-turning intermediate car 70 begins to come into contact with the cam surface 92 of the jumper 90. Then, due to the further rotation of the day-turning intermediate wheel 70, the phase returns to the same phase as that shown in FIG. 8, the claw 78 presses the cam surface 92 to the outside in the radial direction of the day-turning intermediate wheel 70, and the jumper 90 meshes. The portion 91 is meshed between the two teeth 21 and 21 of the date wheel 20, and the date wheel 20 is in a state in which rotation is blocked or suppressed.

以上のように構成された本実施形態の時計１によれば、日回し中間車７０の原動欠歯部材７４と日回し車８０の従動欠歯部材８４とからなる欠歯機構により、ステップモータ３０の連続的な回転動作を、日車２０の間欠的な回転動作に変換することができる。 According to the clock 1 of the present embodiment configured as described above, the step motor 30 is provided with a tooth-missing mechanism including a driving missing tooth member 74 of the day-turning intermediate wheel 70 and a driven missing tooth member 84 of the day-turning wheel 80. The continuous rotation motion of the sun wheel 20 can be converted into an intermittent rotation motion of the date wheel 20.

欠歯機構は、原動欠歯部材７４の円弧面７２が従動欠歯部材８４の凹面８２と接する２か所の間に形成された凹状の空間に、円弧面７２の凸となる部分が突入するため、従動欠歯部材８４が停止している状態では、従動欠歯部材８４を停止した状態に確実に保持する。 In the tooth missing mechanism, the convex portion of the arc surface 72 rushes into the concave space formed between the arc surface 72 of the driving missing tooth member 74 and the concave surface 82 of the driven tooth missing member 84. Therefore, when the driven missing tooth member 84 is stopped, the driven missing tooth member 84 is reliably held in the stopped state.

また、本実施形態の時計１は、日回し中間車７０の爪７８が、回転駆動していない状態の日車２０にジャンパ９０の噛合部９１を噛み合わせるようにジャンパ９０を変位させることで、日車２０の停止状態を維持することができる。 Further, in the clock 1 of the present embodiment, the jumper 90 is displaced so that the claw 78 of the day rotation intermediate wheel 70 meshes the meshing portion 91 of the jumper 90 with the day wheel 20 in a state where the day wheel 70 is not rotationally driven. The stopped state of the date wheel 20 can be maintained.

また、本実施形態の時計１は、日回し中間車７０が、ジャンパ９０を変位させる爪７８と、日車２０を駆動する日回し車８０を間欠動作させる原動欠歯部材７４とに、機能を分離したため、ジャンパ９０を変位させるのに適した爪７８の形状と、日回し車８０を間欠動作させるのに適した原動欠歯部材７４の形状とを、両立することができ、両機能を爪及び円弧面からなるゼネバ機構で兼用していた公知の構成に比べて、日回し中間車の設計の自由度を向上させることができる。 Further, the clock 1 of the present embodiment has functions of the claw 78 for displacement of the jumper 90 and the driving missing tooth member 74 for intermittently operating the day wheel 80 for driving the day wheel 20. Since they are separated, the shape of the claw 78 suitable for displacement of the jumper 90 and the shape of the prime mover missing tooth member 74 suitable for intermittent operation of the day wheel 80 can be compatible with each other, and both functions can be clawed. It is possible to improve the degree of freedom in designing the day-turning intermediate vehicle as compared with the known configuration which is also used in the general mechanism composed of the arcuate surface.

また、本実施形態の時計１は、日回し中間車７０が、ジャンパ９０を変位させる爪７８と、日車２０を駆動する日回し車８０を間欠動作させる原動欠歯部材７４とを、軸方向の異なる位置に備えた構成（爪７８と原動欠歯部材７４とを同一平面上に設けない構成）であるため、ジャンパ９０を変位させる爪７８の長さを、日回し車８０を間欠回転させるための円弧面７２の半径よりも小さい寸法に設定することができる。この結果、ジャンパを変位させる爪の長さが、日回し車を間欠回転させるための円弧面の半径よりも大きい寸法であったゼネバ機構を用いた公知の時計に比べて、日回し中間車７０の駆動トルクを低減することができる。したがって、ステップモータ３０のトルクを低減することができる。 Further, in the clock 1 of the present embodiment, the day-turning intermediate car 70 has a claw 78 that displaces the jumper 90 and a driving missing tooth member 74 that intermittently operates the day-turning wheel 80 that drives the day wheel 20 in the axial direction. Since the configuration is provided at different positions (the claw 78 and the prime mover missing tooth member 74 are not provided on the same plane), the length of the claw 78 that displaces the jumper 90 is used to intermittently rotate the day wheel 80. It can be set to a dimension smaller than the radius of the arcuate surface 72 for the purpose. As a result, the length of the claw that displaces the jumper is larger than the radius of the arc surface for intermittently rotating the day wheel, as compared with the known timepiece using the Geneva mechanism. Drive torque can be reduced. Therefore, the torque of the step motor 30 can be reduced.

また、本実施形態の時計１は、爪７８と原動欠歯部材７４とが軸方向の異なる位置に備えた構成であって、爪７８と原動欠歯部材７４とを同一平面上に配置した構成に比べて、平面での大きさが増大するのを防止することができる。 Further, the clock 1 of the present embodiment has a configuration in which the claw 78 and the driving missing tooth member 74 are provided at different positions in the axial direction, and the claw 78 and the driving missing tooth member 74 are arranged on the same plane. It is possible to prevent the size on the plane from increasing as compared with the above.

また、本実施形態の時計１は、原動欠歯部材７４の歯部７３に４つの歯７３ａが形成され、この４つの歯７３ａに噛み合う３つの歯８３ａが従動欠歯部材８４の歯部８３に形成されているため、日車２０の日付の数字２９を１個分送るために、４つの歯７３ａにトルクを分散することができる。したがって、日回し中間車のゼネバ機構に設けられた１つの爪だけで、日車２０の日付の数字２９を１個分送っていた公知の時計に比べて、日回し中間車７０の１回転中の負荷変動を低減することができる。したがって、ステップモータ３０のトルクを低減することができる。 Further, in the clock 1 of the present embodiment, four teeth 73a are formed on the tooth portion 73 of the driving missing tooth member 74, and three teeth 83a meshing with the four teeth 73a are formed on the tooth portion 83 of the driven missing tooth member 84. Since it is formed, the torque can be distributed to the four teeth 73a in order to send one number 29 of the date of the date wheel 20. Therefore, compared to a known clock that sends one number 29 of the date of the day wheel 20 with only one claw provided in the Geneva mechanism of the day-turning intermediate car, the day-turning intermediate car 70 is rotating once. Load fluctuation can be reduced. Therefore, the torque of the step motor 30 can be reduced.

本実施形態の時計１は、日車２０の歯２１と、日回し車８０の日送り歯８１と、ジャンパ９０の噛合部９１とが、時計１の厚さ方向（日回し中間車７０の軸方向と同じ）において同一平面上に配置されている。また、本実施形態の時計１は、日回し中間車の原動欠歯部材７４と、日回し車８０の従動欠歯部材８４とが、時計１の厚さ方向において同一平面上に配置されている。また、本実施形態の時計１は、日回し中間車の爪７８と、ジャンパ９０のカム面９２とが、時計１の厚さ方向において同一平面上に配置されている。 In the clock 1 of the present embodiment, the teeth 21 of the date wheel 20, the day feed teeth 81 of the day wheel 80, and the meshing portion 91 of the jumper 90 are in the thickness direction of the clock 1 (the axis of the day wheel intermediate wheel 70). They are arranged on the same plane in the same direction). Further, in the clock 1 of the present embodiment, the driving missing tooth member 74 of the day-turning intermediate wheel and the driven missing tooth member 84 of the day-turning wheel 80 are arranged on the same plane in the thickness direction of the clock 1. .. Further, in the clock 1 of the present embodiment, the claw 78 of the day-turning intermediate wheel and the cam surface 92 of the jumper 90 are arranged on the same plane in the thickness direction of the clock 1.

本実施形態の時計１は、図４，５に示すように、日回し中間車７０の爪７８と日回し車８０の日送り歯８１とは、時計１の厚さ方向において同一平面上に配置されていない。しかし、時計１は、爪７８と日送り歯８１とを、時計１の厚さ方向において同一平面上に配置してもよい。この場合、ジャンパ９０を、カム面９２と噛合部９１とが厚さ方向に段付きとならない形状のものにすることが必要である。このように、爪７８と日送り歯８１とを、時計１の厚さ方向において同一平面上に配置した構成の時計１によれば、時計１の厚さを、図４，５に示したものよりも薄くすることができる。 In the clock 1 of the present embodiment, as shown in FIGS. 4 and 5, the claw 78 of the day rotation intermediate wheel 70 and the day feed tooth 81 of the day rotation wheel 80 are arranged on the same plane in the thickness direction of the clock 1. It has not been. However, in the clock 1, the claw 78 and the day feed teeth 81 may be arranged on the same plane in the thickness direction of the clock 1. In this case, it is necessary for the jumper 90 to have a shape in which the cam surface 92 and the meshing portion 91 are not stepped in the thickness direction. According to the clock 1 having the claw 78 and the day feed teeth 81 arranged on the same plane in the thickness direction of the clock 1, the thickness of the clock 1 is shown in FIGS. 4 and 5. Can be made thinner than.

本実施形態の時計１は、分単位でのクロノグラフ表示機能を有していて、ステップモータ３０が、日車２０を回転させる駆動源としてだけでなく、分クロノグラフ車５０を回転させる駆動源としても機能するが、本発明に係るカレンダ付時計は、駆動源が日車を駆動すれば足り、他の機能の駆動源を兼ねてもよいし、日車の駆動専用であってもよい。したがって、本実施形態の時計１においては、分クロノグラフ中間車４０及び分クロノグラフ車５０を、単に、減速輪列の歯車に置き換えることで、日車２０の駆動専用とすることができる。 The clock 1 of the present embodiment has a chronograph display function in minutes, and the step motor 30 is not only a drive source for rotating the date wheel 20 but also a drive source for rotating the minute chronograph wheel 50. However, the clock with a calendar according to the present invention only needs to have a drive source for driving the date wheel, and may also serve as a drive source for other functions, or may be dedicated to driving the date wheel. Therefore, in the clock 1 of the present embodiment, the minute chronograph intermediate wheel 40 and the minute chronograph wheel 50 can be dedicated to driving the date wheel 20 by simply replacing the gears of the reduction wheel train.

本実施形態の電子時計１は、日車２０を有するカレンダ付時計であるが、本発明に係る表示車付時計は、カレンダ付時計に限定されるものではなく、日車以外の曜車（曜日を示す文字が周方向に並んで表示された車）や月車（月（１〜１２月）を示す文字が周方向に並んで表示された車）やムーンフェイズや都市表示車（都市名を示す文字が周方向に並んで表示された車）など、種々の情報を表示する表示車を有する表示車付時計においても同様に適用可能である。 The electronic clock 1 of the present embodiment is a clock with a calendar having a date wheel 20, but the clock with a display vehicle according to the present invention is not limited to the clock with a calendar, and is a day of the week other than the date wheel (day of the week). Vehicles with characters indicating the month (January to December) arranged side by side in the circumferential direction), Moon Phase and city display vehicles (vehicles with the characters indicating the month (January to December) arranged side by side) The same applies to a clock with a display vehicle having a display vehicle that displays various information such as (a vehicle in which the characters shown are displayed side by side in the circumferential direction).

１ 電子時計
２０ 日車
２１ 歯
７０ 日回し中間車
７２ 円弧面
７３ 歯部
７４ 原動欠歯部材
７８ 爪
８０ 日回し車
８１ 日送り歯
８２ 凹面
８３ 歯部
８３ａ 歯
８４ 従動欠歯部材
９０ ジャンパ
９１ 噛合部
９１ａ 斜面
９２ カム面
Ｃ，Ｃ１ 中心 1 Electronic clock 20 day wheel 21 tooth 70 day turning intermediate car 72 arc surface 73 tooth part 74 prime drive missing tooth member 78 claw 80 day turning wheel 81 day feed tooth 82 concave surface 83 tooth part 83a tooth 84 driven missing tooth member 90 jumper 91 meshing Part 91a Slope 92 Cam surface C, C1 center

Claims (4)

連続的に回転する原動車と、前記原動車に係合する従動車と、前記従動車の回転に従って回転する表示車に対して、回転を許容する位置と回転を阻止又は抑制する位置との間で変位可能に設けられた躍制部材と、を備え、
前記原動車と前記従動車とは、前記原動車の連続的な回転を前記従動車の間欠的な回転に変換する欠歯機構として互いに係合する原動欠歯部材と従動欠歯部材とを有し、
前記原動車は、前記原動欠歯部材と、前記躍制部材を前記表示車の回転を阻止又は抑制する位置に変位させる爪とを、前記原動車の軸方向の異なる位置に有し、
前記従動車は、前記従動欠歯部材と、前記表示車の歯と噛み合う駆動歯とを、前記従動車の軸方向の異なる位置に有し、
前記従動欠歯部材が停止している期間中は、前記爪が前記躍制部材を、前記表示車の回転を阻止又は抑制する位置に変位させた状態とするように、前記原動欠歯部材と前記爪との位置関係が設定されている表示車付時計。 Between a position that allows rotation and a position that prevents or suppresses rotation of a continuously rotating driving vehicle, a driven vehicle that engages with the driving vehicle, and a display vehicle that rotates according to the rotation of the driven vehicle. Equipped with a jumping control member that can be displaced by
The driving vehicle and the driven vehicle have a driving missing tooth member and a driven missing tooth member that engage with each other as a tooth missing mechanism that converts continuous rotation of the driving vehicle into intermittent rotation of the driven vehicle. And
The prime mover has a prime mover missing tooth member and a claw that displaces the jump control member at a position that prevents or suppresses the rotation of the display wheel at different positions in the axial direction of the prime mover.
The driven vehicle has the driven missing tooth member and the driving teeth that mesh with the teeth of the display vehicle at different positions in the axial direction of the driven vehicle.
During the period when the driven missing tooth member is stopped, the claw is displaced with the driven missing tooth member so as to be in a state where the claw is displaced to a position where the rotation of the display wheel is blocked or suppressed. A clock with a display car in which the positional relationship with the claw is set. 前記従動欠歯部材が回転している期間中は、前記爪が前記躍制部材から離れて前記躍制部材を、前記表示車の回転を許容する位置に変位可能とするように、前記原動欠歯部材と前記爪との位置関係が設定されている請求項１に記載の表示車付時計。 During the period during which the driven missing tooth member is rotating, the driving missing so that the claw separates from the jumping member and the jumping member can be displaced to a position allowing the rotation of the display wheel. The clock with a display wheel according to claim 1, wherein the positional relationship between the tooth member and the claw is set. 前記原動欠歯部材は、前記従動欠歯部材に噛み合って前記従動欠歯部材を回転させる歯部を有し、
前記歯部は、前記原動欠歯部材の前記歯部以外の部分よりも、半径方向に突出している請求項１又は２に記載の表示車付時計。 The driving missing tooth member has a tooth portion that meshes with the driven missing tooth member to rotate the driven missing tooth member.
The clock with a display wheel according to claim 1 or 2, wherein the tooth portion protrudes in the radial direction from a portion other than the tooth portion of the driving missing tooth member. 前記歯部は、前記従動欠歯部材と噛み合う複数の歯を備えている請求項３に記載の表示車付時計。 The clock with a display wheel according to claim 3, wherein the tooth portion includes a plurality of teeth that mesh with the driven missing tooth member.
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US6097672A (en) * 1997-01-17 2000-08-01 Seiko Epson Corporation Display device and watch with same
JP2002156469A (en) * 2000-11-21 2002-05-31 Citizen Watch Co Ltd Watch with calendar
US7023762B1 (en) * 2003-01-15 2006-04-04 Timex Group B.V. Date display assembly for an analog timepiece
CH699794B1 (en) * 2008-10-24 2013-08-15 Eta Sa Mft Horlogere Suisse An aid in maintaining the position of a ring date indicator timepiece.
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