JPH0537268Y2

JPH0537268Y2 -

Info

Publication number: JPH0537268Y2
Application number: JP17473587U
Authority: JP
Priority date: 1987-11-16
Filing date: 1987-11-16
Publication date: 1993-09-21
Anticipated expiration: 2002-11-16
Also published as: JPH0178983U

Description

【考案の詳細な説明】〔産業上の利用分野〕本考案は日の裏車と噛み合う歯と日回し車に噛
み合う歯の２つの歯車部を持つ時計の筒車構造に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hour wheel structure for a timepiece that has two gear parts: teeth that mesh with the minute wheel and teeth that mesh with the date wheel.

[Conventional technology]

アナログ時計における筒車は日の裏車と噛み合
つて、日の裏車を介して減速された分車の回転を
受け取り、筒車上に固定された時計により時刻の
表示を行うとともに、一方では日回し車と噛み合
つて、日回し車を回転させ、日送り等を行わせる
ものである。一般に、時計体の平面スペースに余
裕がある場合筒車の日の裏車と噛み合う歯車と日
回し車と噛み合う歯車は、日の裏かな、および日
回し車のモジユールを合わせることにより同一の
歯車で行うことが可能である。 The hour wheel in an analog clock meshes with the hour wheel, receives the decelerated rotation of the minute wheel via the hour wheel, and displays the time using the clock fixed on the hour wheel. It meshes with the date wheel, rotates the date wheel, and causes the date to change. Generally, if there is enough plane space on the watch body, the gear that meshes with the hour wheel and the gear that meshes with the date wheel can be made into the same gear by combining the modules of the hour wheel and the date wheel. It is possible to do so.

しかし、平面スペースに余裕のない場合は、前
述の構造では筒車から日回し車への減速比を1/2
とすると、日回し車外径が筒車外径の約２倍と大
きくなり、平面的に配置することが困難である。
このような場合、従来の技術としては第２図に示
した如く、筒車１の日の裏かな２−ａと噛み合う
歯車１−ａ（以下筒歯車と呼ぶ）の上方に、前記
筒歯車より径の小さいもう一つの歯車１−ｂ（以
下日回し中間歯車と呼ぶ）を設け、該日回し中間
歯車と日回し車３を噛み合わせることにより、日
回し車を小さくして時計体の平面サイズの小型化
を可能としていた。 However, if there is not enough flat space, the structure described above can reduce the reduction ratio from the hour wheel to the date wheel by 1/2.
In this case, the outer diameter of the date wheel becomes approximately twice as large as the outer diameter of the hour wheel, making it difficult to arrange the date wheel in a two-dimensional manner.
In such a case, as shown in FIG. 2, the conventional technique is to install a gear 1-a (hereinafter referred to as a cylindrical gear) that meshes with the pinion 2-a of the hour wheel 1 from the cylindrical gear. By providing another gear 1-b with a smaller diameter (hereinafter referred to as the date intermediate gear) and meshing the date intermediate gear with the date wheel 3, the date wheel can be made smaller and the plane size of the watch body can be reduced. This made it possible to downsize the

[Problem that the invention attempts to solve]

しかし、従来のこのような構造では、筒歯車の
上方に日回し中間歯車を配置していたため、該日
回し中間歯車と噛み合う日回し車も、筒車下面に
対し筒歯車の厚み分以上（第２図に於ける高さＨ
相当分）上方に配置しなければならずそれに伴い
日車、日車押え等の部材も上方に配置されること
となり、時計体の厚みを増加させるといつた問題
を有していた。 However, in such a conventional structure, the date intermediate gear was placed above the hour gear, so the date wheel that meshed with the date intermediate gear also had a distance greater than the thickness of the hour gear (the thickness of the hour gear) with respect to the lower surface of the hour wheel. Height H in Figure 2
Accordingly, parts such as the date dial and date dial holder must also be placed upwards, resulting in the problem of increasing the thickness of the watch body.

そこで本考案はこのような問題を解決するため
のもので、その目的とする所は、日回し中間歯車
を筒歯車の下方に配置した筒車構造をとることに
より、時計体の薄型化を可能とすることにある。 Therefore, the present invention was developed to solve these problems, and its purpose is to make the watch body thinner by adopting a hour wheel structure in which the intermediate date gear is placed below the barrel gear. It is to do so.

[Means for solving problems]

本考案の時計の筒車構造は、時計機枠である地
板、分針の付く分車、時針の付く筒車、前記分車
の回転を減速して筒車に伝える日の裏車、日付け
を表示する日車、前記筒車に噛み合い前記日車を
１日に１度間欠送りする日回し車からなる時計の
構造に於いて、前記筒車は日の裏車と噛み合う歯
車と日回し車と噛み合う歯車の２つの歯車部を持
ち、かつ、日回し車と噛み合う歯車が日の裏車と
噛み合う歯車の下方に位置することを特徴とす
る。 The hour wheel structure of the clock of the present invention consists of a main plate which is the clock frame, a minute wheel with a minute hand, an hour wheel with an hour hand, a date wheel that decelerates the rotation of the minute wheel and transmits it to the hour wheel, and a date wheel. In the structure of a clock consisting of a date wheel for displaying, and a date wheel that meshes with the hour wheel and moves the date wheel intermittently once a day, the hour wheel has a gear wheel that meshes with the hour wheel, and a date wheel that meshes with the hour wheel. It has two gear parts that mesh with each other, and the gear that meshes with the date wheel is located below the gear that meshes with the date wheel.

〔Example〕

以下、本考案について図面に基づいて説明す
る。 The present invention will be explained below based on the drawings.

第１図は本考案の一実施例を示す要部断面図で
ある。 FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.

７は時計機枠である地板で、８は文字板であ
る。４は分車でその先端には分針が装着される。
１は筒車でその先端には時針が装着される。２は
日の裏車で前記の分車４および筒車１と噛み合つ
ており、分車の回転を筒車へ伝える。６は日車で
ある。３は日回し車で前記の筒車と噛み合い１日
に１回転し、該日回し車上に設けた日送り爪３−
ａにより日車６を送る。５は日車６等の断面方向
のあがきを決める日車押えである。 7 is the main plate, which is the frame of the watch, and 8 is the dial. 4 is a minute wheel, and a minute hand is attached to the tip of the minute wheel.
1 is an hour wheel with an hour hand attached to its tip. Reference numeral 2 denotes a minute wheel which meshes with the minute wheel 4 and hour wheel 1, and transmits the rotation of the minute wheel to the hour wheel. 6 is the day wheel. 3 is a date wheel which engages with the hour wheel and rotates once a day, and a date pawl 3- provided on the date wheel.
The date wheel 6 is sent by a. 5 is a date dial holder that determines the movement of the date dial 6, etc. in the cross-sectional direction.

ここで、本考案の筒車１は日の裏車のカナ２−
ａと噛み合う筒歯車１−ａおよび日回し車３と噛
み合う日回し中間歯車１−ｂの二つの歯車部を有
しており、筒歯車の下方に日回し中間歯車が配置
されている。したがつて、分車４の回転は日の裏
車２を介して筒歯車１−ａに伝わり筒車１が回転
すると同時に該筒車の回転は筒歯車１−ａの下方
に配置された日回し中間歯車１−ｂにより日回し
車３へと伝えられる。すなわち、日回し車３は筒
歯車１−ａの下部で日回し中間歯車１−ｂと噛み
合うこととなり、従来例で示した日回し中間歯車
が筒歯車の上方に位置するのに較べ、日回し車の
断面位置を筒歯車の厚み分以上下方に配置するこ
とが可能となる。 Here, the hour wheel 1 of the present invention is the Japanese hour wheel Kana 2-
It has two gear parts: a cylindrical gear 1-a that meshes with the date dial 3, and a date intermediate gear 1-b that meshes with the date dial 3, and the date intermediate gear 1-b is arranged below the cylindrical gear. Therefore, the rotation of the hour wheel 4 is transmitted to the hour wheel 1-a via the hour wheel 2, and at the same time as the hour wheel 1 rotates, the rotation of the minute wheel 4 is transmitted to the hour wheel 1-a. It is transmitted to the date wheel 3 by the intermediate rotating gear 1-b. That is, the date drive wheel 3 meshes with the date intermediate gear 1-b at the lower part of the cylindrical gear 1-a, and compared to the conventional example in which the date intermediate gear is located above the cylindrical gear, the date It becomes possible to arrange the cross-sectional position of the wheel lower than the thickness of the cylindrical gear.

ここで、筒車が金属で構成される場合は筒歯車
および日回し中間歯車の二体構成となるのが通常
であるが、筒車をプラスチツク等の合成樹脂で構
成することにより一体化を図ることも可能であ
る。 Here, when the hour wheel is made of metal, it is usually a two-piece structure consisting of a cylinder gear and a date intermediate gear, but it is possible to integrate the hour wheel by making it from synthetic resin such as plastic. It is also possible.

[Effect of idea]

以上述べたように、本考案によれば筒車を日の
裏車と噛み合う歯車および日回し車と噛み合う歯
車の二つの歯車部により構成し、かつ、日回し車
と噛み合う歯車を日の裏車と噛み合う歯車の下方
に配置したことにより日回し車の断面位置を下げ
ることが可能となり、それに伴つて日車、日車押
さえ等の部材も下方に配置することができ、時計
体の薄型化が実現できるといつた大きな効果を有
する。 As described above, according to the present invention, the hour wheel is composed of two gear parts, the gear that meshes with the date wheel and the gear that meshes with the date wheel, and the gear that meshes with the date wheel is the gear that meshes with the date wheel. By placing it below the gear that meshes with the gear, it is possible to lower the cross-sectional position of the date wheel, and along with this, parts such as the date dial and date dial holder can also be placed lower, allowing for a thinner watch body. It has a great effect that it can be achieved.

[Brief explanation of the drawing]

第１図……本考案の一実施例を示す要部断面
図。第２図……従来例を示す要部断面図。１……筒車、２……日の裏車、３……日回し
車、４……分車、５……日車押え、６……日車、
７……地板、８……文字板。 FIG. 1: A cross-sectional view of essential parts showing an embodiment of the present invention. FIG. 2: A sectional view of the main parts showing a conventional example. 1... Hour wheel, 2... Date wheel, 3... Date wheel, 4... Minute wheel, 5... Date wheel holder, 6... Date wheel,
7...Main plate, 8...Dial board.

Claims

[Scope of utility model registration request]

The main plate that is the clock frame, the minute wheel with the minute hand, the hour wheel with the hour hand, the date wheel that decelerates the rotation of the minute wheel and transmits it to the hour wheel, the date wheel that displays the date, and the hour wheel that meshes with the hour wheel. In the structure of the clock consisting of a date wheel that advances the date wheel intermittently once a day, the hour wheel has two gears, a gear that meshes with the date wheel and a gear that meshes with the date wheel, and The hour wheel structure of a clock is characterized in that the gear that meshes with the date wheel is located below the gear that meshes with the minute wheel.