JP6621008B2 - Mechanical watch - Google Patents

Mechanical watch Download PDF

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JP6621008B2
JP6621008B2 JP2015101371A JP2015101371A JP6621008B2 JP 6621008 B2 JP6621008 B2 JP 6621008B2 JP 2015101371 A JP2015101371 A JP 2015101371A JP 2015101371 A JP2015101371 A JP 2015101371A JP 6621008 B2 JP6621008 B2 JP 6621008B2
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barrel
wheel
wave gear
gear
speed
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JP2016206165A (en
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信彦 小林
信彦 小林
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信彦 小林
信彦 小林
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Description

本発明は、新しい機構を用いた機械式時計に関する。  The present invention relates to a mechanical timepiece using a new mechanism.

従来のゼンマイを動力源とする機械式時計の輪列構造は、特許文献1に記載されている。巻き込まれたゼンマイの反発力を香箱車が回転トルクに変換し、二番車、三番車、四番車の順に伝達される。一方、四番車にはガンギ車とアンクルとからなる脱進機と、ヒゲゼンマイとテンプとからなる調速機が係合されていて、上記輪列の回転運動を制御している。  A conventional train wheel structure using a mainspring as a power source is described in Patent Document 1. The barrel wheel converts the repulsion force of the mainspring that is involved into rotational torque, which is transmitted in the order of the second wheel, third wheel, and fourth wheel. On the other hand, the fourth wheel is engaged with an escapement made up of an escape wheel and an ankle and a speed governor made up of a balance spring and a balance to control the rotational movement of the wheel train.

また、波動歯車と呼ばれる機構は1957年に原理が発明された後実用化され、特許文献2に開示されているような関節機構を始め多くの機械装置に主として減速機構として採用されている。  A mechanism called a wave gear was put into practical use after the principle was invented in 1957, and is mainly used as a speed reduction mechanism in many mechanical devices such as the joint mechanism disclosed in Patent Document 2.

波動歯車は楕円と真円の差動を利用した減速機であり、リング状で内周に歯が刻まれたサーキュラ・スプライン、弾性体からなり外周に歯の刻まれたフレクスプライン、及び楕円状カムの外周にボールベアリングが配置されたウェーブ・ジェネレータからなる。ウェーブ・ジェネレータの外側にフレクスプライン、その外側にサーキュラ・スプラインが配置された構成となっており、サーキュラ・スプラインを固定した上でウェーブ・ジェネレータを回転させることにより、サーキュラ・スプラインとフレクスプラインの歯数の違い分だけフレクスプラインがウェーブ・ジェネレータと逆方向に回転する。ウェーブ・ジェネレータを入力軸としフレクスプラインを出力軸とすることで小型・高精度・高減速比の減速装置として機能する。  The wave gear is a reduction gear that uses the difference between an ellipse and a perfect circle. It is a circular spline with a ring shape and teeth engraved on the inner periphery, a flex spline with an elastic body and teeth engraved on the outer periphery, and an oval shape. It consists of a wave generator with ball bearings on the outer periphery of the cam. The flex spline is arranged outside the wave generator, and the circular spline is arranged outside the wave generator. The circular spline and flex spline teeth are rotated by rotating the wave generator after fixing the circular spline. The flexspline rotates in the opposite direction to the wave generator by the difference in number. By using the wave generator as the input shaft and the flexspline as the output shaft, it functions as a compact, high-accuracy and high reduction ratio reduction device.

特開平9−138286号公報Japanese Patent Laid-Open No. 9-138286 特開昭57−114051号公報JP-A-57-114051

上記のような従来型の機械式時計では香箱車からガンギ車まで多数の歯車が関係しているため摩擦抵抗が大きくなり、エネルギーの損失が増大する。また、多数の歯車が関係しているということはバックラッシも大きくなり、精度が悪くなる原因ともなる。  In the conventional mechanical timepiece as described above, since a large number of gears are involved from the barrel wheel to the escape wheel, the frictional resistance is increased and the energy loss is increased. In addition, the fact that a large number of gears are involved also increases the backlash and causes a decrease in accuracy.

従って本発明による機械式時計では、波動歯車を増速機構として機械式時計に採用することにより、歯車数を減少させて摩擦抵抗を減らし、またバックラッシのない高精度な伝達機構を実現し、さらにそれにより秒針、分針、時針の配置の自由度を格段に高めることを課題とする。  Therefore, in the mechanical timepiece according to the present invention, by adopting the wave gear as a speed increasing mechanism in the mechanical timepiece, the number of gears is reduced to reduce the frictional resistance, and a highly accurate transmission mechanism without backlash is realized. Accordingly, an object is to remarkably increase the degree of freedom of arrangement of the second hand, the minute hand, and the hour hand.

上記課題を解決するため本発明では、エネルギーを蓄積するゼンマイを具備した香箱と、香箱からの回転エネルギー出力を増速する増速輪列と、規則正しい往復回転運動を行う調速機と、前記調速機と連動して前記増速輪列を制御する脱進機とからなる機械式時計において、前記増速輪列として波動歯車を用い、前記波動歯車内に前記香箱を配置し、前記波動歯車の入力部が前記香箱に接続され、出力部が脱進機のガンギ車に接続されていることを特徴とする。In order to solve the above problems, in the present invention, a barrel having a spring for storing energy, a speed increasing wheel train for increasing the rotational energy output from the barrel, a speed governor for performing regular reciprocating rotary motion, and the speed regulator. In a mechanical timepiece comprising an escapement that controls the speed increasing wheel train in conjunction with a speed gear, a wave gear is used as the speed increasing wheel train, the barrel is disposed in the wave gear, and the wave gear The input part is connected to the barrel, and the output part is connected to the escape wheel of the escapement .

本発明による機械式時計では、波動歯車を増速機構として採用することにより、歯車数が減少することにより摩擦抵抗が減少し、またバックラッシのない高精度な伝達機構が実現でき、さらにそれにより秒針、分針、時針の配置の自由度を格段に高めることが可能となる。  In the mechanical timepiece according to the present invention, the wave gear is adopted as the speed increasing mechanism, whereby the friction resistance is reduced by reducing the number of gears and a high-accuracy transmission mechanism without backlash can be realized. The degree of freedom of arrangement of the minute hand and hour hand can be remarkably increased.

以下、図面に基づいて本発明の実施例を説明する。図1に本発明による機械式時計主要部の断面図を示した。香箱10は波動歯車20内に配置されている。香箱10のゼンマイ軸11は波動歯車20のフレックスプライン22に接続されており、その外側では香箱車12を介して竜頭50に噛合している。波動歯車20のサーキュラ・スプライン21はケース21に固定されている。フレックスプライン22は香箱10内のゼンマイ(図示していない)に接続されている。ウェーブ・ジェネレータ23はボールベアリング24を介してフレックスプライン22に接しており、その軸25は出力軸として出力歯車30と係合している。出力歯車30はガンギ車カナ41を介してガンギ車と噛合している。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional view of the main part of a mechanical timepiece according to the present invention. The barrel 10 is disposed in the wave gear 20. The mainspring shaft 11 of the barrel 10 is connected to the flex spline 22 of the wave gear 20, and meshes with the crown 50 via the barrel 12 on the outside thereof. A circular spline 21 of the wave gear 20 is fixed to the case 21. The flexpline 22 is connected to a spring (not shown) in the barrel 10. The wave generator 23 is in contact with the flex spline 22 via a ball bearing 24, and its shaft 25 is engaged with an output gear 30 as an output shaft. The output gear 30 meshes with the escape wheel via the escape wheel pinion 41.

上述の実施例によれば、香箱10のゼンマイのエネルギーは波動歯車20のフレックスプライン22に伝達され、それがボールベアリング24を通してウェーブ・ジェネレータ23に伝達される。ウェーブ・ジェネレータ23は出力歯車30に連結されているため、波動歯車20から直接ガンギ車40に連絡することになる。波動歯車は通常、ウェーブ・ジェネレータが入力側となり、フレックスプラインが出力側となるため減速装置として使用されることが多いが、本発明では逆に、フレックスプライン22が入力側となり、ウェーブ・ジェネレータ23が出力側となるため、増速装置として機能する。波動歯車20は一体化されているため、多くの輪列を介してガンギ車に接続する従来の構成に比較してエネルギー出力機構をコンパクトにすることができる。従って、秒針、分針、時針等の配置に自由度を持たせることが可能となる。  According to the embodiment described above, the energy of the spring of the barrel 10 is transmitted to the flex spline 22 of the wave gear 20, which is transmitted to the wave generator 23 through the ball bearing 24. Since the wave generator 23 is connected to the output gear 30, the wave generator 20 communicates directly with the escape wheel 40. The wave gear is usually used as a speed reducer because the wave generator is on the input side and the flex spline is on the output side. However, in the present invention, on the contrary, the flex spline 22 is on the input side and the wave generator 23 is used. Functions as a speed increasing device. Since the wave gear 20 is integrated, the energy output mechanism can be made compact as compared with the conventional configuration in which the wave gear 20 is connected to the escape wheel & pinion via many wheel trains. Accordingly, it is possible to give a degree of freedom to the arrangement of the second hand, the minute hand, the hour hand, and the like.

波動歯車20は一体化されているため、多くの輪列を介してガンギ車に接続する従来の構成に比較してエネルギー出力機構をコンパクトにすることができる。従って、秒針、分針、時針等の配置に自由度を持たせることが可能となる。  Since the wave gear 20 is integrated, the energy output mechanism can be made compact as compared with the conventional configuration in which the wave gear 20 is connected to the escape wheel & pinion via many wheel trains. Accordingly, it is possible to give a degree of freedom to the arrangement of the second hand, the minute hand, the hour hand, and the like.

本発明による機械式時計の実施例主要部を示す断面図である。It is sectional drawing which shows the Example principal part of the mechanical type | mold timepiece by this invention.

10 香箱
11 ゼンマイ軸
12 香箱車
20 波動歯車
21 サーキュラ・スプライン
22 フレックスプライン
23 ウェーブ・ジェネレータ
24 ボールベアリング
25 出力軸
30 出力歯車
40 ガンギ車
41 ガンギ車カナ
50 竜頭
100 ケース
101 ケース
10 barrel 11 spring shaft 12 barrel wheel 20 wave gear 21 circular spline 22 flex spline 23 wave generator 24 ball bearing 25 output shaft 30 output gear 40 escape wheel 41 escape wheel kana 50 crown 100 case 101 case

Claims (1)

エネルギーを蓄積するゼンマイを具備した香箱と、香箱からの回転エネルギー出力を増速する増速輪列と、規則正しい往復回転運動を行う調速機と、前記調速機と連動して前記増速輪列を制御する脱進機とからなる機械式時計において、前記増速輪列として波動歯車を用い、前記波動歯車内に前記香箱を配置し、前記波動歯車の入力部が前記香箱に接続され、出力部が脱進機のガンギ車に接続されていることを特徴とする機械式時計。A barrel having an energy storage spring, a speed increasing wheel train for increasing rotational energy output from the barrel, a speed governor performing regular reciprocating rotational motion, and the speed increasing wheel in conjunction with the speed governor In a mechanical timepiece composed of an escapement that controls a train, a wave gear is used as the speed increasing wheel train, the barrel is disposed in the wave gear, and an input portion of the wave gear is connected to the barrel. A mechanical timepiece characterized in that an output part is connected to an escape escape wheel .
JP2015101371A 2015-04-24 2015-04-24 Mechanical watch Active JP6621008B2 (en)

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JP6621008B2 true JP6621008B2 (en) 2019-12-18

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09138286A (en) * 1995-11-16 1997-05-27 Seiko Instr Inc Mechanical watch with torque adjusting function
JP2011190826A (en) * 2010-03-11 2011-09-29 Matex Kk Wave motion gear device
JP5467019B2 (en) * 2010-09-07 2014-04-09 住友重機械工業株式会社 Bending gear system

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