JP2020134276A

JP2020134276A - Electronic timepiece

Info

Publication number: JP2020134276A
Application number: JP2019026750A
Authority: JP
Inventors: 新之介坂田; Shinnosuke Sakata; 大輔中平; Daisuke Nakahira; 悠介廣田; Yusuke Hirota
Original assignee: Citizen Watch Co Ltd
Current assignee: Citizen Watch Co Ltd
Priority date: 2019-02-18
Filing date: 2019-02-18
Publication date: 2020-08-31
Anticipated expiration: 2039-02-18
Also published as: JP7219112B2

Abstract

To decrease in size and thickness of a movement of an electronic timepiece in comparison with a case of using a button battery and improve impact resistance of the movement.SOLUTION: An electronic timepiece 1 comprises an exterior case 30, a movement 10 arranged in the exterior case 30, and a battery 20 for driving the movement 10. The battery 20 has at least one convex portion on a surface, is arranged between the exterior case 30 and the movement 10 so as to cover the movement 10, and the convex portion contacts at least one of the exterior case 30 and the movement 10.SELECTED DRAWING: Figure 1

Description

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

特許文献１には、ムーブメントの外周であってかつケース枠の内側に延出した上側環状部分の下に環状空間を形成し、そこに環状の電池を収納してなる電池駆動型時計が記載されている。 Patent Document 1 describes a battery-powered timepiece in which an annular space is formed on the outer periphery of the movement and under the upper annular portion extending inside the case frame, and the annular battery is housed therein. ing.

また、近年、電池の薄型化やフレキシブル化が求められており、ペーパ電池などの各種の薄型電池が開発されている。例えば、特許文献２には、電極群とこれを収容する外装体とを備え屈曲可能なフレキシブル電池が記載されている。 Further, in recent years, there has been a demand for thinner and more flexible batteries, and various thin batteries such as paper batteries have been developed. For example, Patent Document 2 describes a flexible battery including an electrode group and an exterior body accommodating the electrode group.

実開昭５１−１３３６８号公報Jitsukaisho 51-13368 Gazette 特開２０１６−７２０１５号公報Japanese Unexamined Patent Publication No. 2016-72015

図７（Ａ）および図７（Ｂ）は、従来の電子時計のムーブメント２の模式的な平面図および断面図である。これらの図では、ムーブメント２の構成要素のうち、輪列１５、裏周り１６および電池２００を図示している。符号１５１は図示しない指針の回転軸（指針軸）を、符号１９は、使用者が手動で指針の位置などを調整するための操作軸（巻真、リューズ）を指す。輪列１５は、指針を回転させるための各種の歯車であり、裏周り１６は、使用者がリューズを引く操作を輪列１５に伝達するための機構である。電池２００は、ムーブメント２の電源となるボタン電池である。 7 (A) and 7 (B) are schematic plan views and cross-sectional views of the movement 2 of the conventional electronic clock. In these figures, among the components of the movement 2, the train wheel 15, the back circumference 16, and the battery 200 are shown. Reference numeral 151 indicates a rotation axis (pointer axis) of a pointer (not shown), and reference numeral 19 indicates an operation axis (winding stem, crown) for the user to manually adjust the position of the pointer and the like. The train wheel 15 is various gears for rotating the pointer, and the back circumference 16 is a mechanism for transmitting the operation of pulling the crown to the train wheel 15. The battery 200 is a button battery that serves as a power source for the movement 2.

アナログクオーツの腕時計では、ボタン電池が広く用いられており、ボタン電池は、電源供給を安定させるためにムーブメント内に配置される。一般に、ボタン電池は円柱形状を有し、その大きさや厚さは、ムーブメント内の時計部品の中で比較的大きい。また、図７（Ａ）および図７（Ｂ）に示すように、ムーブメントの中心には輪列１５が配置され、巻真１９の周囲には裏周り１６が配置される。このため、ムーブメント２の外径は輪列１５、裏周り１６および電池２００の大きさで決まり、ムーブメント２の厚さは電池２００の厚さで決まる。輪列１５や裏周り１６、巻真１９の大きさや位置は時計の構造上、変更しにくいため、電子時計の小型化、薄型化のためには、電池を小型化、薄型化するとともに、これらの部材を避けて電池を配置する必要がある。 Button batteries are widely used in analog quartz wristwatches, which are placed inside the movement to stabilize the power supply. Generally, a button battery has a cylindrical shape, and its size and thickness are relatively large among watch components in the movement. Further, as shown in FIGS. 7A and 7B, a train wheel 15 is arranged at the center of the movement, and a back circumference 16 is arranged around the winding stem 19. Therefore, the outer diameter of the movement 2 is determined by the size of the train wheel 15, the back circumference 16, and the battery 200, and the thickness of the movement 2 is determined by the thickness of the battery 200. Since the size and position of the train wheel 15, the back circumference 16, and the winding stem 19 are difficult to change due to the structure of the timepiece, in order to make the electronic timepiece smaller and thinner, the battery is made smaller and thinner, and these are used. It is necessary to arrange the batteries avoiding the members of.

また、一般に、ボタン電池は、内部に電解質の液体が詰まり、外周が金属で覆われているので、時計部品の中で比較的重い部品でもある。そのため、電子時計に衝撃が加わると、電池がムーブメントから飛び出そうとして、電池の周辺にある他の部材を破壊したり、電子時計の電源が切れてリセットがかかったりすることがある。 Further, in general, a button battery is also a relatively heavy component among watch components because the inside is clogged with an electrolyte liquid and the outer circumference is covered with metal. Therefore, when an impact is applied to the electronic watch, the battery may try to pop out of the movement, destroying other members around the battery, or the electronic watch may be turned off and reset.

本発明は、ボタン電池を用いる場合と比べて電子時計のムーブメントを小型化かつ薄型化するとともにムーブメントの耐衝撃性を向上させることを目的とする。 An object of the present invention is to make the movement of an electronic timepiece smaller and thinner than when a button battery is used, and to improve the impact resistance of the movement.

外装ケースと、外装ケース内に配置されたムーブメントと、ムーブメントを駆動する電池とを有し、電池は、表面に少なくとも１つの凸部を有し、ムーブメントを覆うように外装ケースとムーブメントとの間に配置され、凸部で外装ケースとムーブメントとの少なくとも一方に接触していることを特徴とする電子時計が提供される。 It has an outer case, a movement arranged in the outer case, and a battery that drives the movement, the battery having at least one convex portion on the surface between the outer case and the movement so as to cover the movement. An electronic watch is provided that is arranged in a convex portion and is in contact with at least one of an outer case and a movement.

電池は、外装ケースの側壁に沿って延びる薄板形状を有し、ムーブメントの側面を覆うように配置され、凸部は、外装ケースの側壁の内側表面とムーブメントの側面との少なくとも一方に接触していることが好ましい。 The battery has a lamellar shape that extends along the side walls of the exterior case and is arranged to cover the sides of the movement, with the protrusions in contact with at least one of the inner surface of the side walls of the exterior case and the sides of the movement. It is preferable to have.

ムーブメントは側方に突出する巻真を有し、電池は、ムーブメントの周方向における巻真の位置を避けて、電子時計の厚さ方向に見たときにＣ字形状になるように配置されていることが好ましい。 The movement has a winding stem that projects laterally, and the battery is arranged so that it has a C-shape when viewed in the thickness direction of the electronic watch, avoiding the position of the winding stem in the circumferential direction of the movement. It is preferable to have.

凸部は、ムーブメントの周方向において等間隔に配置された複数の凸部であることが好ましい。 The convex portions are preferably a plurality of convex portions arranged at equal intervals in the circumferential direction of the movement.

電池は、時刻の表示面とは反対側である外装ケースの底部に沿って延びる薄板形状を有し、ムーブメントの底面を覆うように配置され、凸部は、外装ケースの底部の内側表面とムーブメントの底面との少なくとも一方に接触していることが好ましい。 The battery has a thin plate shape that extends along the bottom of the exterior case, which is opposite to the time display surface, and is arranged so as to cover the bottom surface of the movement. It is preferable that the battery is in contact with at least one of the bottom surfaces of the battery.

凸部は、電池の両面に形成され、外装ケースとムーブメントとの両方に接触していることが好ましい。 It is preferable that the protrusions are formed on both sides of the battery and are in contact with both the outer case and the movement.

電池は、屏風状に複数回折り畳まれることで形成された複数の襞を有し、凸部は襞の山の部分であることが好ましい。 The battery has a plurality of folds formed by folding a plurality of folding screens in a folding screen shape, and the convex portion is preferably a mountain portion of the fold.

上記の電子時計によれば、ボタン電池を用いる場合と比べてムーブメントが小型かつ薄型になるとともにその耐衝撃性が向上する。 According to the above-mentioned electronic watch, the movement becomes smaller and thinner and its impact resistance is improved as compared with the case where a button battery is used.

電子時計１の平面図および部分断面図である。It is a plan view and a partial sectional view of an electronic clock 1. 電池２０，２０Ａ，２０Ｂの斜視図である。It is a perspective view of the battery 20, 20A, 20B. 電子時計１’の平面図および部分断面図である。It is a plan view and a partial sectional view of an electronic clock 1'. 電池２０Ｃ，２０Ｄの斜視図および断面図である。It is a perspective view and sectional view of the batteries 20C and 20D. 電子時計１’’の断面図である。It is sectional drawing of the electronic clock 1 ″. 電池２０Ｅ，２０Ｆの斜視図である。It is a perspective view of the battery 20E, 20F. 従来の電子時計のムーブメント２の模式的な平面図および断面図である。It is a schematic plan view and sectional view of the movement 2 of the conventional electronic timepiece.

以下、図面を参照しつつ、電子時計について説明する。ただし、本発明は図面または以下に記載される実施形態には限定されないことを理解されたい。 Hereinafter, the electronic clock will be described with reference to the drawings. However, it should be understood that the present invention is not limited to the drawings or embodiments described below.

図１（Ａ）および図１（Ｂ）は、電子時計１の平面図および部分断面図である。電子時計１は、主要な構成部品として、ムーブメント１０、電池２０、外装ケース３０、裏蓋３５、文字板５０、風防ガラス７０およびアンテナ８０を有する。図１（Ａ）は電子時計１を裏蓋３５側から見た平面図であり、内部構造が分かるように、裏蓋３５が透明であるとして図示している。図１（Ｂ）は、図１（Ａ）のＩＢ−ＩＢ線に沿った電子時計１の切断面を示す。以下では、電子時計がアナログの腕時計である場合の例を説明するが、電子時計は腕時計に限らず置き時計などでもよいし、デジタル時計でもよい。 1 (A) and 1 (B) are a plan view and a partial cross-sectional view of the electronic clock 1. The electronic clock 1 has a movement 10, a battery 20, an outer case 30, a back cover 35, a dial 50, a windshield 70, and an antenna 80 as main components. FIG. 1A is a plan view of the electronic timepiece 1 viewed from the back cover 35 side, and is shown assuming that the back cover 35 is transparent so that the internal structure can be seen. FIG. 1B shows a cut surface of the electronic clock 1 along the IB-IB line of FIG. 1A. Hereinafter, an example in which the electronic clock is an analog wristwatch will be described, but the electronic clock is not limited to the wristwatch, and may be a table clock or the like, or may be a digital clock.

外装ケース３０は、図示した例では平面視で円形であり、円筒形の内部空間を有する。裏蓋３５は、外装ケース３０で囲まれる電子時計１の内部空間の底部を覆う部材である。文字板５０および風防ガラス７０は、ムーブメント１０を挟んで裏蓋３５とは反対側に配置されており、これらも裏蓋３５とともに平面視で円形である。ただし、外装ケース３０や裏蓋３５、文字板５０、風防ガラス７０の形状は、電子時計のデザインによっては４角形などの他の形状でもよい。アンテナ８０は、ＧＰＳ（Global Positioning System：全地球測位システム）などの衛星電波、標準電波またはその他の無線電波を受信する。電子時計１はアンテナ８０により時刻情報を受信して現在時刻を設定可能な電波時計であるが、アンテナ８０は必須の部品ではなく、電波の受信機能はなくてもよい。 The outer case 30 is circular in a plan view in the illustrated example, and has a cylindrical internal space. The back cover 35 is a member that covers the bottom of the internal space of the electronic timepiece 1 surrounded by the outer case 30. The dial 50 and the windshield 70 are arranged on the side opposite to the back cover 35 with the movement 10 interposed therebetween, and these are also circular in a plan view together with the back cover 35. However, the shape of the outer case 30, the back cover 35, the dial 50, and the windshield 70 may be other shapes such as a quadrangle depending on the design of the electronic timepiece. The antenna 80 receives satellite radio waves such as GPS (Global Positioning System), standard radio waves, or other radio waves. The electronic clock 1 is a radio clock that can receive time information by the antenna 80 and set the current time, but the antenna 80 is not an indispensable component and may not have a radio wave receiving function.

ムーブメント１０は、機械的な部品と電気的な部品を含む電子時計１の駆動機構であり、外装ケース３０内に配置されている。ムーブメント１０は、回路基板１１、回路押さえ１２および地板１３、ならびに図示しない指針を駆動するためのモータや輪列などで構成され、それらが組み込まれユニット化された部品である。ムーブメント１０の形状は、図示した例では概ね円柱状であるが、それには限定されない。 The movement 10 is a drive mechanism of the electronic timepiece 1 including mechanical parts and electrical parts, and is arranged in the outer case 30. The movement 10 is composed of a circuit board 11, a circuit retainer 12, a main plate 13, a motor for driving a pointer (not shown), a train wheel, and the like, and is a component in which they are incorporated and unitized. The shape of the movement 10 is generally columnar in the illustrated example, but is not limited thereto.

回路基板１１は、時刻を計時するための図示しない回路が搭載された基板である。図１（Ａ）では回路押さえ１２に隠れてほとんど見えないが、回路基板１１は概ね円板形状を有し、ムーブメント１０の裏蓋３５側の面（底面）をほぼ覆うように地板１３の底面に固定されている。回路押さえ１２は、回路基板１１を固定するために回路基板１１の上（裏蓋３５側）に配置された金属板であり、回路基板１１を間に挟んで地板１３の底面にねじ止めされている。地板１３は、内部にモータや輪列などの駆動部品が組み込まれるムーブメント１０の本体部分である。実際には、地板１３には様々な凹凸が形成されているが、それらを無視すれば地板１３は概ね円板形状を有する。 The circuit board 11 is a board on which a circuit (not shown) for measuring the time is mounted. Although it is hidden by the circuit retainer 12 and hardly visible in FIG. 1 (A), the circuit board 11 has a substantially disk shape, and the bottom surface of the main plate 13 so as to substantially cover the surface (bottom surface) of the movement 10 on the back cover 35 side. It is fixed to. The circuit retainer 12 is a metal plate arranged on the circuit board 11 (on the back cover 35 side) for fixing the circuit board 11, and is screwed to the bottom surface of the main plate 13 with the circuit board 11 sandwiched between them. There is. The main plate 13 is a main body portion of the movement 10 in which drive parts such as a motor and a train wheel are incorporated. Actually, various irregularities are formed on the main plate 13, but if they are ignored, the main plate 13 has a substantially disk shape.

操作ボタン１８は、時刻の設定や電子時計１の様々な付加機能を実行するために使用者により押下される操作部であり、ムーブメント１０の側面から突出して外装ケース３０の側壁を貫通している。図１（Ａ）では外装ケース３０に隠れて見えないが、操作ボタン１８の先端部は電子時計１の外側に露出している。巻真（リューズ）１９は、手動で指針の位置などを調整するために使用者により回される操作軸であり、操作ボタン１８と同様にムーブメント１０の側面から突出して外装ケース３０の側壁を貫通し、その先端部は電子時計１の外側に露出している。操作ボタン１８と巻真１９は、図示した例ではムーブメント１０の周方向に３０度程度離れているが、両者の位置関係は図示したものとは異なっていてもよい。 The operation button 18 is an operation unit pressed by the user to set the time and execute various additional functions of the electronic timepiece 1, and protrudes from the side surface of the movement 10 and penetrates the side wall of the exterior case 30. .. In FIG. 1A, the tip of the operation button 18 is exposed to the outside of the electronic timepiece 1, although it is hidden behind the outer case 30 and cannot be seen. The crown 19 is an operation shaft that is turned by the user to manually adjust the position of the pointer, and like the operation button 18, it protrudes from the side surface of the movement 10 and penetrates the side wall of the outer case 30. However, its tip is exposed to the outside of the electronic clock 1. In the illustrated example, the operation button 18 and the winding stem 19 are separated from each other by about 30 degrees in the circumferential direction of the movement 10, but the positional relationship between the two may be different from that shown.

図２（Ａ）は、電池２０の斜視図である。電池２０は、ムーブメント１０を駆動する電子時計１の電源であり、屏風状に折り畳まれた状態で外装ケース３０の内壁に沿って延びる薄板形状を有する。電池２０は、例えば、正極と負極の間の電解質層が薄膜状に形成され、その電極と電解質層が可撓性の外装体に収容されたフレキシブル電池である。あるいは、電池２０は、公知の全固体電池やポリマー電池で薄型に構成されたものでもよいが、折り曲げてＣ字形状に変形できるように可撓性を有することが好ましい。電子時計１の径方向における電池２０の厚さは、電子時計１の厚さ方向における電池２０の幅よりも小さいことが好ましい。 FIG. 2A is a perspective view of the battery 20. The battery 20 is a power source for the electronic clock 1 that drives the movement 10, and has a thin plate shape that extends along the inner wall of the outer case 30 in a folding screen-like state. The battery 20 is, for example, a flexible battery in which an electrolyte layer between a positive electrode and a negative electrode is formed in a thin film shape, and the electrode and the electrolyte layer are housed in a flexible outer body. Alternatively, the battery 20 may be made of a known all-solid-state battery or a polymer battery in a thin shape, but is preferably flexible so that it can be bent into a C-shape. The thickness of the battery 20 in the radial direction of the electronic clock 1 is preferably smaller than the width of the battery 20 in the thickness direction of the electronic clock 1.

電池２０は、外装ケース３０の内壁とムーブメント１０の側面との間に配置され、ムーブメント１０の周方向における操作ボタン１８および巻真１９の位置を除いて、ムーブメント１０のほぼ全体（中心角で言うと３３０度程度）を取り囲んでいる。すなわち、電池２０は、外装ケース３０とムーブメント１０との間の空間を貫通する操作ボタン１８および巻真１９を避けてムーブメント１０の外周にＣ字形状に巻かれており、ムーブメント１０の側面を覆っている。 The battery 20 is arranged between the inner wall of the outer case 30 and the side surface of the movement 10, and is almost the entire movement 10 (referred to in terms of the central angle) except for the positions of the operation button 18 and the winding stem 19 in the circumferential direction of the movement 10. And around 330 degrees). That is, the battery 20 is wound in a C shape on the outer circumference of the movement 10 while avoiding the operation button 18 and the winding stem 19 penetrating the space between the outer case 30 and the movement 10, and covers the side surface of the movement 10. ing.

符号２１，２２は、電池２０の電極（正極と負極）を指す。電極２１，２２は、例えば、Ｃ字形状の電池２０の両端部における内周面、外周面、両端面または底面（裏蓋３５側の面）のうちのどこにあってもよい。図１（Ａ）および図１（Ｂ）では、電池２０の両端部の全体（内周面、外周面、両端面および底面）が電極２１，２２であるように簡略化している。図２（Ａ）では、電池２０の内周面が電極２１，２２であるとして図示している。 Reference numerals 21 and 22 refer to the electrodes (positive electrode and negative electrode) of the battery 20. The electrodes 21 and 22 may be located on any of the inner peripheral surface, the outer peripheral surface, both end surfaces or the bottom surface (the surface on the back cover 35 side) at both ends of the C-shaped battery 20, for example. In FIGS. 1A and 1B, the entire ends (inner peripheral surface, outer peripheral surface, both end surfaces and bottom surface) of the battery 20 are simplified so as to be electrodes 21 and 22. In FIG. 2A, the inner peripheral surface of the battery 20 is shown as electrodes 21 and 22.

電池２０は、屏風状に複数回折り畳まれることで形成された複数の折れ目２３（襞）を有する。折れ目２３は電池２０の凸部であり、電池２０の円周方向（ムーブメント１０の周方向）において等間隔に配置されている。電池２０は、折れ目２３の部分で外装ケース３０とムーブメント１０の両方に接触しており、より正確には、外周面における襞の山の部分で外装ケース３０の側壁の内側表面に接触し、内周面における襞の山の部分でムーブメント１０の側面に接触している。符号２９は、電池２０がムーブメント１０に巻き付けられたときに操作ボタン１８および巻真１９が入る隙間を指す。 The battery 20 has a plurality of folds 23 (folds) formed by folding a plurality of folding screens in a folding screen shape. The folds 23 are convex portions of the battery 20, and are arranged at equal intervals in the circumferential direction of the battery 20 (circumferential direction of the movement 10). The battery 20 is in contact with both the outer case 30 and the movement 10 at the fold 23, and more accurately, is in contact with the inner surface of the side wall of the outer case 30 at the fold ridges on the outer peripheral surface. The mountain portion of the folds on the inner peripheral surface is in contact with the side surface of the movement 10. Reference numeral 29 indicates a gap into which the operation button 18 and the winding stem 19 enter when the battery 20 is wound around the movement 10.

回路基板１１上の回路と電池２０の電極２１，２２とは、図１（Ａ）および図１（Ｂ）に示す端子１１１，１１２により電気的に接続されている。図示した例では、端子１１１，１１２の接続用に回路押さえ１２の２箇所が切り欠かれており、回路基板１１はその位置で裏蓋３５側に露出している。端子１１１，１１２は細長い板状の導通部材であり、回路基板１１の露出箇所において端子１１１は電極２１に向けて、端子１１２は電極２２に向けて、それぞれムーブメント１０の径方向に延びている。 The circuit on the circuit board 11 and the electrodes 21 and 22 of the battery 20 are electrically connected by the terminals 111 and 112 shown in FIGS. 1A and 1B. In the illustrated example, two places of the circuit retainer 12 are cut out for connecting the terminals 111 and 112, and the circuit board 11 is exposed to the back cover 35 side at that position. The terminals 111 and 112 are elongated plate-shaped conductive members, and the terminals 111 extend toward the electrode 21 and the terminals 112 extend toward the electrode 22 in the radial direction of the movement 10 at the exposed portion of the circuit board 11.

端子１１１，１１２は、裏蓋３５の内側表面に固定された押付部材３６により裏蓋３５側から押圧されて、回路基板１１上の回路と電池２０の電極２１，２２とにそれぞれ接触している。押付部材３６は、裏蓋３５よりも直径が小さい中心部分と、その外周部から回路基板１１に向けて電子時計１の厚さ方向に斜めに延びる２本の腕部３６１，３６２とを有する。腕部３６１，３６２は、板ばねなどの弾性体であり、それぞれ端子１１１，１１２を回路基板１１と電池２０の両方に押し付ける。ムーブメント１０を外装ケース３０内に組み込んだ後で、電池２０を外装ケース３０内に収め、端子１１１，１１２を腕部３６１，３６２で押さえることで、回路基板１１と電池２０との電気的な接続が確保される。電極２１，２２の間で短絡が生じないように、腕部３６１，３６２かまたは端子１１１，１１２の裏蓋３５側の表面は、絶縁体で構成される。 The terminals 111 and 112 are pressed from the back cover 35 side by the pressing member 36 fixed to the inner surface of the back cover 35, and are in contact with the circuit on the circuit board 11 and the electrodes 21 and 22 of the battery 20, respectively. .. The pressing member 36 has a central portion having a diameter smaller than that of the back cover 35, and two arm portions 361 and 362 extending obliquely in the thickness direction of the electronic watch 1 from the outer peripheral portion thereof toward the circuit board 11. The arms 361 and 362 are elastic bodies such as leaf springs, and the terminals 111 and 112 are pressed against both the circuit board 11 and the battery 20, respectively. After incorporating the movement 10 into the outer case 30, the battery 20 is housed in the outer case 30, and the terminals 111 and 112 are pressed by the arms 361 and 362 to electrically connect the circuit board 11 and the battery 20. Is secured. The surface of the arms 361, 362 or the terminals 111, 112 on the back cover 35 side is made of an insulator so that a short circuit does not occur between the electrodes 21 and 22.

図３（Ａ）および図３（Ｂ）は、電子時計１’の平面図および部分断面図である。電子時計１’は、図１（Ａ）の操作ボタン１８および押付部材３６が省略され、端子１１１，１１２が端子１１１’，１１２’にそれぞれ置き換えられている点が電子時計１とは異なり、その他の点では電子時計１と同じ構成を有する。図３（Ａ）では、図１（Ａ）と同様に、電子時計１’の裏蓋３５側の面を裏蓋３５が透明であるとして図示している。図３（Ｂ）では、図３（Ａ）のＩＩＩＢ−ＩＩＩＢ線に沿った電子時計１’の切断面を示しているが、外装ケース３０と風防ガラス７０の図示を省略している。電子時計１’のように操作ボタンがない電子時計では、巻真１９が突出している位置以外のムーブメント１０の全周に、電池２０を巻き付けることができる。 3 (A) and 3 (B) are a plan view and a partial cross-sectional view of the electronic clock 1'. The electronic clock 1'is different from the electronic clock 1 in that the operation button 18 and the pressing member 36 of FIG. 1A are omitted and the terminals 111 and 112 are replaced with the terminals 111'and 112', respectively. In that respect, it has the same configuration as the electronic clock 1. In FIG. 3 (A), similarly to FIG. 1 (A), the surface of the electronic watch 1'on the back cover 35 side is illustrated assuming that the back cover 35 is transparent. FIG. 3B shows the cut surface of the electronic clock 1'along the line IIIB-IIIB of FIG. 3A, but the exterior case 30 and the windshield 70 are not shown. In an electronic clock having no operation button such as the electronic clock 1', the battery 20 can be wound around the entire circumference of the movement 10 other than the position where the winding stem 19 protrudes.

端子１１１’，１１２’はどちらも同じ形状を有し、回路基板１１と回路押さえ１２との間に挟まれ、その外周側の先端部は、回路基板１１と回路押さえ１２の端部で文字板５０側に折り曲げられている。端子１１１’，１１２’は板ばねなどの弾性体であり、その先端部は外周側（図３（Ｂ）の左側）に向けて付勢され、電池２０の電極２１，２２の側面に接触している。端子１１１’，１１２’の先端部は、地板１３の切欠き部１３１内をムーブメント１０の径方向（図３（Ｂ）の左右）に移動可能である。電子時計１’では、端子１１１’，１１２’はムーブメント１０に予め設けられており、ムーブメント１０を外装ケース３０内に組み込んだ後で電池２０を外装ケース３０内に収めるだけで、回路基板１１と電池２０との電気的な接続が確保される。 Both terminals 111'and 112'have the same shape and are sandwiched between the circuit board 11 and the circuit retainer 12, and the tip portion on the outer peripheral side thereof is a dial at the end of the circuit board 11 and the circuit retainer 12. It is bent to the 50 side. The terminals 111'and 112' are elastic bodies such as leaf springs, and their tip portions are urged toward the outer peripheral side (left side in FIG. 3B) and come into contact with the side surfaces of the electrodes 21 and 22 of the battery 20. ing. The tip portions of the terminals 111'and 112' can be moved in the notch 131 of the main plate 13 in the radial direction of the movement 10 (left and right in FIG. 3B). In the electronic watch 1', the terminals 111'and 112' are provided in advance in the movement 10, and the battery 20 is simply housed in the outer case 30 after the movement 10 is incorporated in the outer case 30 to form the circuit board 11. An electrical connection with the battery 20 is ensured.

符号４０，４５は、それぞれ、ムーブメント１０と文字板５０の間に配置されたソーラセルおよび日車を指す。ソーラセル４０と日車４５は、図１（Ｂ）では図示されていないが、電子時計１にも含まれていてもよい。電池２０は、１次電池に限らず、ソーラセル４０によって充電される２次電池でもよい。 Reference numerals 40 and 45 refer to solar cells and date wheels arranged between the movement 10 and the dial 50, respectively. Although the solar cell 40 and the date wheel 45 are not shown in FIG. 1B, they may also be included in the electronic clock 1. The battery 20 is not limited to the primary battery, but may be a secondary battery charged by the solar cell 40.

電子時計１，１’では、ムーブメント１０内に電池が配置されないので、内部にボタン電池を含む図７（Ａ）のムーブメント２と比べて、ムーブメント１０を小型化かつ薄型化することができる。また、電子時計１，１’では、電池２０の円周方向の長さや、径方向の厚さ、電子時計の厚さ方向における電池２０の幅にある程度の自由度がある。このため、同じムーブメント１０に対して様々な形状および大きさの電池を用意し、複数種類の薄型電池の中から長寿命のものや安価なものなどを適宜選択して使用することができる。 In the electronic clocks 1 and 1', since the battery is not arranged in the movement 10, the movement 10 can be made smaller and thinner than the movement 2 of FIG. 7A including the button battery inside. Further, in the electronic clocks 1 and 1', there is a certain degree of freedom in the length of the battery 20 in the circumferential direction, the thickness in the radial direction, and the width of the battery 20 in the thickness direction of the electronic clock. Therefore, batteries of various shapes and sizes can be prepared for the same movement 10, and a long-life battery or an inexpensive battery can be appropriately selected and used from a plurality of types of thin batteries.

電子時計１，１’の電池２０は、屏風状に折り畳まれることで弾性を有し、ムーブメント１０と外装ケース３０との間におけるムーブメント１０の衝撃吸収材（緩衝材）としても機能する。ムーブメントの外周がプラスチック製の枠体（中枠）で囲まれた従来の電子時計では、中枠が緩衝材を兼ねているが、電子時計１，１’では、中枠のないムーブメントを使用する場合でも、電池２０自体が緩衝材として働く。このため、電子時計１，１’では、耐衝撃性が向上して電源が安定し、かつ、電池２０をムーブメント１０内に固定する部材やムーブメント１０の緩衝材を別途設ける必要がなくなるので、部品数の削減の効果も得られる。また、電池２０に凹凸を持たせることで、そうしない場合と比べて電池２０の長さが長くなり、電解質の体積が増えるので、電池容量も多くなる。 The batteries 20 of the electronic clocks 1 and 1'have elasticity when folded in a folding screen shape, and also function as a shock absorbing material (cushioning material) for the movement 10 between the movement 10 and the outer case 30. In a conventional electronic watch in which the outer circumference of the movement is surrounded by a plastic frame (middle frame), the middle frame also serves as a cushioning material, but in the electronic watches 1, 1', a movement without a middle frame is used. Even in this case, the battery 20 itself acts as a cushioning material. Therefore, in the electronic timepieces 1 and 1', the impact resistance is improved and the power supply is stable, and it is not necessary to separately provide a member for fixing the battery 20 in the movement 10 or a cushioning material for the movement 10. The effect of reducing the number can also be obtained. Further, by providing the battery 20 with irregularities, the length of the battery 20 becomes longer and the volume of the electrolyte increases as compared with the case where the battery 20 does not have the unevenness, so that the battery capacity also increases.

図２（Ｂ）および図２（Ｃ）は、別の電池２０Ａ，２０Ｂの斜視図である。図２（Ｂ）に示す電池２０Ａは、外周面上に４つの凸部２４を有し、内周面における各凸部２４の裏側に凹部２５を有する。凸部２４は、電池２０Ａの周方向において互いに９０度間隔で配置されており、凸部２４と凹部２５が周方向の同じ位置にあることで、電池２０Ａは全周にわたって同じ厚さを有する。図２（Ｃ）に示す電池２０Ｂも外周面上に９０度間隔で配置された４つの凸部２４を有するが、電池２０Ｂの内周面２６は、電池２０Ａとは異なり、全周にわたって凹凸のない平坦面である。図示した形態とは逆に、電池の内周面だけに凸部を形成し、外周面を平坦面にしてもよい。 2 (B) and 2 (C) are perspective views of the other batteries 20A and 20B. The battery 20A shown in FIG. 2B has four convex portions 24 on the outer peripheral surface and recesses 25 on the back side of each convex portion 24 on the inner peripheral surface. The convex portions 24 are arranged at 90-degree intervals in the circumferential direction of the battery 20A, and the convex portions 24 and the concave portions 25 are at the same positions in the circumferential direction, so that the battery 20A has the same thickness over the entire circumference. The battery 20B shown in FIG. 2C also has four convex portions 24 arranged at 90-degree intervals on the outer peripheral surface, but the inner peripheral surface 26 of the battery 20B is uneven over the entire circumference unlike the battery 20A. There is no flat surface. Contrary to the illustrated form, the convex portion may be formed only on the inner peripheral surface of the battery, and the outer peripheral surface may be a flat surface.

図４（Ａ）および図４（Ｂ）は電池２０Ｃの斜視図および断面図であり、図４（Ｃ）は電池２０Ｄの断面図である。電池２０Ｃは、長手方向の一端部に電極２１が、他端部に電極２２がそれぞれ形成された薄板形状の電池であり、電極間の表面に格子状に形成された多数の円形の凸部２４を有する。図４（Ｂ）に示すように、各凸部２４の裏側は凹部であり、凸部２４同士の間は平坦面２７である。電池２０Ｄは、電池２０Ｃと同様の電極２１，２２および凸部２４を有する薄板形状の電池であるが、凸部２４同士の間が平坦面ではなく、凸部２４とは反対側の面に突出する円形の凸部２４’になっている点が電池２０Ｃとは異なる。こうした形状の電池は、例えばフレキシブル電池をプレス加工することで作製される。 4 (A) and 4 (B) are a perspective view and a cross-sectional view of the battery 20C, and FIG. 4 (C) is a cross-sectional view of the battery 20D. The battery 20C is a thin plate-shaped battery in which an electrode 21 is formed at one end in the longitudinal direction and an electrode 22 is formed at the other end, and a large number of circular convex portions 24 formed in a grid pattern on the surface between the electrodes. Has. As shown in FIG. 4B, the back side of each convex portion 24 is a concave portion, and the space between the convex portions 24 is a flat surface 27. The battery 20D is a thin plate-shaped battery having electrodes 21 and 22 and convex portions 24 similar to the battery 20C, but the protrusions between the convex portions 24 are not flat surfaces but project to the surface opposite to the convex portions 24. It differs from the battery 20C in that it has a circular convex portion 24'. A battery having such a shape is produced by, for example, pressing a flexible battery.

電子時計１，１’の電池は、電池２０のように直線上の折れ目を有するものに限らず、電池２０Ａ〜２０Ｄのように曲面状の凹凸形状（湾曲）を有するものでもよいし、特に電池２０Ａ〜２０Ｃのように、片面だけに凸部を有するものでもよい。電池２０Ｃ，２０Ｄは、図４（Ａ）〜図４（Ｃ）に示した状態からＣ字形状に丸められて、外装ケース３０内に収められる。電子時計１，１’の電池２０を電池２０Ａ〜２０Ｄのいずれかに替えた場合には、例えば、凸部２４が外装ケース３０の側壁の内側表面に接触し、内周面２６、平坦面２７または凸部２４’がムーブメント１０の側面に接触する。 The batteries of the electronic clocks 1 and 1'are not limited to those having a linear crease like the battery 20, but may have a curved uneven shape (curvature) such as the batteries 20A to 20D, and in particular. Batteries 20A to 20C may have a convex portion on only one side. The batteries 20C and 20D are rolled into a C shape from the state shown in FIGS. 4 (A) to 4 (C) and housed in the outer case 30. When the battery 20 of the electronic clocks 1 and 1'is replaced with any of the batteries 20A to 20D, for example, the convex portion 24 comes into contact with the inner surface of the side wall of the outer case 30, and the inner peripheral surface 26 and the flat surface 27 Alternatively, the convex portion 24'contacts the side surface of the movement 10.

電子時計１，１’の電池２０を電池２０Ａ〜２０Ｄのいずれかに替えた場合でも、凸部２４，２４’があることで電池自体が弾性を有する。電子時計１，１’に衝撃が加えられたときには、凸部２４，２４’が変形することでその衝撃が吸収され、これにより電池２０Ａ〜２０Ｄはムーブメント１０の緩衝材としても機能する。凸部２４，２４’の個数は何個でもよく、その配置は規則的でもランダムでもよい。ただし、電池を緩衝材として機能させるためには、凸部は電池上に均等に分布していることが好ましく、３つ以上の凸部をムーブメント１０の周方向において等間隔に配置することが好ましい。 Even when the battery 20 of the electronic clocks 1 and 1'is replaced with any of the batteries 20A to 20D, the battery itself has elasticity due to the presence of the convex portions 24 and 24'. When an impact is applied to the electronic clocks 1, 1', the convex portions 24, 24' are deformed to absorb the impact, whereby the batteries 20A to 20D also function as a cushioning material for the movement 10. The number of protrusions 24, 24'may be any number, and the arrangement may be regular or random. However, in order for the battery to function as a cushioning material, it is preferable that the convex portions are evenly distributed on the battery, and it is preferable that three or more convex portions are arranged at equal intervals in the circumferential direction of the movement 10. ..

図５（Ａ）および図５（Ｂ）は、電子時計１’’の断面図である。電子時計１’’は、指針５、ムーブメント１０、電池２０Ｅ、外装ケース３０、文字板５０、見返しリング５５、ベゼル６０および風防ガラス７０を有する。風防ガラス７０側から見たときの電子時計１’’の形状は円形である。いずれの図も、その円の直径を含む面で電子時計１’’を厚さ方向に切断したときの断面を示しており、図５（Ａ）と図５（Ｂ）では切断面の向きが９０度異なる。電子時計１’’と上記の電子時計１，１’との本質的な差異点は、電池の形状およびその配置位置、ならびに電池とムーブメント１０の回路基板１１との接続形態である。 5 (A) and 5 (B) are cross-sectional views of the electronic clock 1 ″. The electronic clock 1 ″ has a pointer 5, a movement 10, a battery 20E, an exterior case 30, a dial 50, a facing ring 55, a bezel 60, and a windshield 70. The shape of the electronic clock 1 ″ when viewed from the windshield 70 side is circular. Each figure shows a cross section when the electronic clock 1 ″ is cut in the thickness direction on the surface including the diameter of the circle, and in FIGS. 5 (A) and 5 (B), the orientation of the cut surface is 90 degrees different. The essential difference between the electronic clock 1 ″ and the electronic clocks 1 and 1 ″ is the shape of the battery and its arrangement position, and the connection form between the battery and the circuit board 11 of the movement 10.

電子時計１’’の電池２０Ｅは、電子時計１，１’の電池２０と同様に薄板形状を有するが、外装ケース３０の側壁とムーブメント１０の側面との間ではなく、裏蓋３５とムーブメント１０の底面（裏蓋３５側の面）との間に配置されている。外装ケース３０と裏蓋３５とをまとめて外装ケースととらえれば、電池２０Ｅは、風防ガラス７０（時刻の表示面）とは反対側である外装ケース３０の底部に沿って配置され、ムーブメント１０の底面の全体を覆っている。 The battery 20E of the electronic watch 1'' has a thin plate shape like the battery 20 of the electronic watches 1 and 1', but the back cover 35 and the movement 10 are not between the side wall of the outer case 30 and the side surface of the movement 10. It is arranged between the bottom surface (the surface on the back cover 35 side). If the outer case 30 and the back cover 35 are collectively regarded as an outer case, the battery 20E is arranged along the bottom of the outer case 30 opposite to the windshield 70 (time display surface), and the movement 10 It covers the entire bottom surface.

図６（Ａ）は、電池２０Ｅの斜視図である。電子時計１，１’の電池２０の形状は、Ｃ字形状が解かれた状態では長方形（帯状）であるが、電池２０Ｅの形状は、円形の外装ケース３０内の底部に敷かれるため円形である。この全体形状の差異点を除けば、電池２０Ｅは、電池２０と同様に、屏風状に複数回折り畳まれることで形成された複数の折れ目２３’（襞）を有する。折れ目２３’は電池２０の凸部であり、互いに平行かつ等間隔に配置されている。電池２０Ｅは、外装ケース３０内において、裏蓋３５側の面における襞の山の部分で裏蓋３５の内側表面に接触し、文字板５０側の面における襞の山の部分でムーブメント１０の底面（回路押さえ１２の表面）に接触している。符号２１，２２は電池２０Ｅの電極（正極と負極）を指し、電極２１は円の外周側の一箇所に、電極２２は、円の中心を挟んで電極２１と対向する外周側の箇所に、それぞれ形成されている。 FIG. 6A is a perspective view of the battery 20E. The shape of the battery 20 of the electronic clocks 1 and 1'is rectangular (belt-shaped) when the C-shape is solved, but the shape of the battery 20E is circular because it is laid on the bottom inside the circular outer case 30. is there. Except for this difference in overall shape, the battery 20E has a plurality of folds 23'(folds) formed by folding a plurality of folding screens in the same manner as the battery 20. The folds 23'are the convex portions of the battery 20 and are arranged parallel to each other and at equal intervals. In the outer case 30, the battery 20E comes into contact with the inner surface of the back cover 35 at the fold ridge on the back cover 35 side, and the bottom surface of the movement 10 at the fold ridge on the dial 50 side. It is in contact with (the surface of the circuit retainer 12). Reference numerals 21 and 22 refer to the electrodes (positive electrode and negative electrode) of the battery 20E, the electrode 21 is located on the outer peripheral side of the circle, and the electrode 22 is located on the outer peripheral side facing the electrode 21 with the center of the circle in between. Each is formed.

電子時計１’’の回路基板１１も概ね円板形状を有し、ムーブメント１０の底面のほぼ全体を覆っており、電池２０Ｅとの接続箇所を除く大部分は回路押さえ１２で覆われている。回路基板１１上の回路と電池２０Ｅの電極２１，２２とは、図５（Ａ）および図５（Ｂ）に示す端子１１１’’，１１２’’により電気的に接続されている。端子１１１’’，１１２’’は細長い板状の導通部材であり、それぞれの一端部は回路基板１１上にねじ１１３で固定され、他端部は電極２１，２２に接触し、それらの間の部分は電極２１，２２に向けて電子時計１’’の厚さ方向に斜めに延びている。ムーブメント１０を外装ケース３０内に組み込んだ後で、端子１１１’’，１１２’’と電極２１，２２の位置を合わせて裏蓋３５側から電池２０Ｅを外装ケース３０内に収めることで、回路基板１１と電池２０Ｅとの電気的な接続が確保される。 The circuit board 11 of the electronic clock 1 ″ also has a substantially disk shape and covers almost the entire bottom surface of the movement 10, and most of the circuit board 11 except for the connection point with the battery 20E is covered with the circuit holder 12. The circuit on the circuit board 11 and the electrodes 21 and 22 of the battery 20E are electrically connected by the terminals 111 ″ and 112 ″ shown in FIGS. 5 (A) and 5 (B). The terminals 111 ″ and 112 ″ are elongated plate-shaped conductive members, one end of which is fixed on the circuit board 11 with a screw 113, and the other end of which contacts the electrodes 21 and 22 and between them. The portion extends diagonally toward the electrodes 21 and 22 in the thickness direction of the electronic clock 1 ″. After incorporating the movement 10 into the outer case 30, the terminals 111 ″ and 112 ″ are aligned with the electrodes 21 and 22 and the battery 20E is housed in the outer case 30 from the back cover 35 side to accommodate the circuit board. The electrical connection between the 11 and the battery 20E is secured.

このように、外装ケース３０内の電池の配置位置は、ムーブメント１０の側方に限らず、ムーブメント１０の底部における回路基板１１と裏蓋３５の間でもよい。電子時計１’’でも、折れ目２３’を含めた電池２０Ｅの厚さをボタン電池の厚さよりも小さくすれば、内部にボタン電池を含む図７（Ａ）のムーブメント２と比べて、ムーブメント１０を小型化かつ薄型化することができる。また、電子時計１’’の電池２０Ｅも、屏風状に折り畳まれることで弾性を有し、ムーブメント１０と裏蓋３５との間でムーブメント１０の緩衝材としても機能する。上記の電池２０および２０Ｅの両方を１つの外装ケース３０内に配置してもよく、この場合にも、ムーブメント１０の小型化および薄型化ならびに耐衝撃性の向上の効果が得られる。 As described above, the battery arrangement position in the outer case 30 is not limited to the side of the movement 10, but may be between the circuit board 11 and the back cover 35 at the bottom of the movement 10. Even in the electronic watch 1'', if the thickness of the battery 20E including the fold 23'is made smaller than the thickness of the button battery, the movement 10 is compared with the movement 2 of FIG. 7 (A) containing the button battery inside. Can be made smaller and thinner. The battery 20E of the electronic timepiece 1 ″ also has elasticity when folded like a folding screen, and also functions as a cushioning material for the movement 10 between the movement 10 and the back cover 35. Both the batteries 20 and 20E may be arranged in one outer case 30, and in this case as well, the effects of downsizing and thinning the movement 10 and improving impact resistance can be obtained.

電子時計１’’の電池の凸部は、例えば渦巻状のものであれば、１つでも電池の表面全体に均等に凹凸形状が与えられる。したがって、電池の凸部は、その形状によっては１つでも電子時計の耐衝撃性を向上させることができるので、必ずしも複数でなくてもよく、少なくとも１つあればよい。 If the convex portion of the battery of the electronic clock 1 ″ is, for example, a spiral shape, even one convex portion is uniformly given an uneven shape on the entire surface of the battery. Therefore, the impact resistance of the electronic timepiece can be improved by even one convex portion of the battery depending on its shape, and therefore, the number of the convex portion of the battery does not necessarily have to be one, and at least one is sufficient.

図６（Ｂ）は、別の電池２０Ｆの斜視図である。電池２０Ｆは、図６（Ａ）の電池２０Ｅと同様の電極２１，２２を有する円形の薄板形状の電池であるが、折れ目ではなく、電極２１，２２の間に格子状に形成された図４（Ａ）の電池２０Ｃと同様の円形の凸部２４を有する。電池２０Ｆにおける凸部２４以外の部分は平坦面である。 FIG. 6B is a perspective view of another battery 20F. The battery 20F is a circular thin plate-shaped battery having electrodes 21 and 22 similar to the battery 20E of FIG. 6A, but is not a fold but is formed in a grid pattern between the electrodes 21 and 22. It has a circular convex portion 24 similar to the battery 20C of 4 (A). The portion of the battery 20F other than the convex portion 24 is a flat surface.

電子時計１’’では、上記の電池２０Ｅに代わりに電池２０Ｆを有してもよい。凸部２４が形成されている面は、電池２０Ｆの片面でもよいし、両面でもよい。電子時計１’’の電池２０Ｅを電池２０Ｆに替えた場合には、例えば、電池２０Ｆの一方の面における凸部２４が裏蓋３５の内側表面に接触し、電池２０Ｆの他方の面（またはその面に形成された別の凸部）がムーブメント１０の底面（回路押さえ１２の表面）に接触する。電池２０Ｆも凸部２４があることで弾性を有するため、電池２０Ｆを使用する場合でも、同様に耐衝撃性の向上の効果が得られる。 The electronic clock 1 ″ may have a battery 20F instead of the battery 20E described above. The surface on which the convex portion 24 is formed may be one side of the battery 20F or both sides. When the battery 20E of the electronic watch 1'' is replaced with the battery 20F, for example, the convex portion 24 on one surface of the battery 20F comes into contact with the inner surface of the back cover 35, and the other surface of the battery 20F (or its own). Another convex portion formed on the surface) comes into contact with the bottom surface of the movement 10 (the surface of the circuit retainer 12). Since the battery 20F also has elasticity due to the presence of the convex portion 24, the effect of improving the impact resistance can be similarly obtained even when the battery 20F is used.

１，１’，１’’ 電子時計
１０ムーブメント
１１回路基板
１１１，１１１’，１１１’’，１１２，１１２’，１１２’’ 端子
１２回路押さえ
１３地板
１８操作ボタン
１９巻真
２０，２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ，２０Ｅ，２０Ｆ電池
２１，２２電極
３０外装ケース
３５裏蓋 1,1', 1'' Electronic clock 10 Movement 11 Circuit board 111,111', 111'', 112, 112', 112'' Terminal 12 Circuit holder 13 Main plate 18 Operation button 19 Volume Shin 20, 20A, 20B, 20C, 20D, 20E, 20F Battery 21 and 22 Electrodes 30 Exterior case 35 Back cover

Claims

With the outer case
The movement arranged in the outer case and
It has a battery that drives the movement and
The battery has at least one convex portion on the surface, is arranged between the outer case and the movement so as to cover the movement, and the convex portion contacts at least one of the outer case and the movement. An electronic clock characterized by being a battery.

The battery has a thin plate shape extending along the side wall of the exterior case and is arranged so as to cover the side surface of the movement.
The electronic watch according to claim 1, wherein the convex portion is in contact with at least one of the inner surface of the side wall of the outer case and the side surface of the movement.

The movement has a winding stem that projects laterally.
The electron according to claim 2, wherein the battery is arranged so as to have a C-shape when viewed in the thickness direction of the electronic timepiece, avoiding the position of the winding stem in the circumferential direction of the movement. clock.

The electronic clock according to claim 2 or 3, wherein the convex portions are a plurality of convex portions arranged at equal intervals in the circumferential direction of the movement.

The battery has a thin plate shape extending along the bottom of the outer case, which is opposite to the time display surface, and is arranged so as to cover the bottom surface of the movement.
The electronic watch according to claim 1, wherein the convex portion is in contact with at least one of the inner surface of the bottom portion of the outer case and the bottom surface of the movement.

The electronic watch according to any one of claims 1 to 5, wherein the convex portions are formed on both sides of the battery and are in contact with both the outer case and the movement.

The battery has a plurality of folds formed by being folded a plurality of times in a folding screen shape.
The electronic watch according to claim 6, wherein the convex portion is a portion of a mountain of folds.