JP2018163166A - Electronic timepiece with solar battery - Google Patents

Electronic timepiece with solar battery Download PDF

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JP2018163166A
JP2018163166A JP2018116776A JP2018116776A JP2018163166A JP 2018163166 A JP2018163166 A JP 2018163166A JP 2018116776 A JP2018116776 A JP 2018116776A JP 2018116776 A JP2018116776 A JP 2018116776A JP 2018163166 A JP2018163166 A JP 2018163166A
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solar cell
electrode
coil spring
guide plate
positive
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JP6648784B2 (en
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玲子 長▲濱▼
Reiko Nagahama
玲子 長▲濱▼
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Seiko Epson Corp
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Seiko Epson Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an electronic timepiece with a solar battery including a film-type solar battery, and less susceptible to effect of static electricity.SOLUTION: An electronic timepiece with a solar battery includes: an exterior case formed of electroconductive material; a solar battery unit 4 accommodated in the exterior case; and a movement 2 that has a secondary battery for accumulating electric energy, housed in the exterior case. The solar battery unit 4 has: a solar battery 40 using a film-made base 41; a positive pole and a negative pole formed on a rear face of the base 41 of the solar battery 40; and an electroconductive solar battery guide plate 45 bonded to the rear face of the base 41 without contact with the positive pole and the negative pole. A positive pole of the solar battery 40 is conducted to a positive pole of the secondary battery, a negative pole of the solar battery 40 is conducted to a negative pole of the secondary battery, and the solar battery guide plate 45 is conducted to an electrode which is set as a ground electrode out of the positive pole and the negative pole of the secondary battery.SELECTED DRAWING: Figure 2

Description

本発明は、太陽電池付電子時計に関する。   The present invention relates to an electronic timepiece with a solar cell.

従来、太陽電池を備える時計（以後、太陽電池付電子時計、という）が知られている（例えば、特許文献１）。
太陽電池付電子時計においては、静電気が内部に入り込むことにより、太陽電池が破損するおそれがある。そこで、太陽電池付電子時計などの携帯型電子機器においては、静電気対策として、静電気の逃避ルートを形成した太陽電池モジュールが用いられる。特許文献１の背景技術には、太陽電池のガラス基板の近傍に別体の金属板を配置し、この金属板を基準電位に接続した太陽電池モジュールが記載されている。また、特許文献１の実施形態には、ガラス基板に電極薄膜を形成し、この電極薄膜を基準電位に接続した太陽電池モジュールが記載されている。これらの太陽電池モジュールにおいては、時計のムーブメントに取り付けた際に、金属板または電極薄膜を基準電位に導通させることで、静電気を流すルートを形成している。
一方、近年、発電性能向上やコスト低減のため、基材としてフィルムを用いたフィルム太陽電池が使用されている。フィルム太陽電池は、時計に使用する場合、剛性を有する金属製の案内板に固定されて組み込まれる。 Conventionally, a timepiece including a solar cell (hereinafter referred to as an electronic timepiece with a solar cell) is known (for example, Patent Document 1).
In an electronic timepiece with a solar cell, the solar cell may be damaged by static electricity entering the inside. Therefore, in a portable electronic device such as an electronic timepiece with a solar cell, a solar cell module having a static electricity escape route is used as a countermeasure against static electricity. The background art of Patent Document 1 describes a solar cell module in which a separate metal plate is disposed in the vicinity of a glass substrate of a solar cell and the metal plate is connected to a reference potential. Further, the embodiment of Patent Document 1 describes a solar cell module in which an electrode thin film is formed on a glass substrate and the electrode thin film is connected to a reference potential. In these solar cell modules, a route for flowing static electricity is formed by connecting a metal plate or an electrode thin film to a reference potential when attached to a movement of a watch.
On the other hand, in recent years, a film solar cell using a film as a substrate has been used in order to improve power generation performance and reduce costs. When the film solar cell is used in a watch, it is fixed and incorporated in a rigid metal guide plate.

国際公開第０２／３９５０４号公報International Publication No. 02/39504

金属製の案内板に固定されたフィルム太陽電池では、太陽電池内部の配線と案内板との間にフィルム太陽電池を覆う樹脂材料が配置され、これがコンデンサーとなる。このとき、フィルム太陽電池の案内板の電位が浮いていると、金属製の案内板に静電気の電荷が流れ込み、太陽電池を介して制御回路に電流が流れ、制御回路に電気的影響が生じるおそれがある。そのため、静電気対策が必要となるが、特許文献１に記載の方法は、ガラス基板を有する太陽電池をムーブメントに取り付けた後に静電気対策を施したものであり、金属製の案内板に固定されたフィルム太陽電池に関しては、検討されていない。特に、フィルム太陽電池をムーブメントに取り付ける後だけでなく、取り付ける前においても静電気対策を行うことに関しては、何ら示唆されていない。   In a film solar cell fixed to a metal guide plate, a resin material covering the film solar cell is disposed between the wiring inside the solar cell and the guide plate, and this becomes a capacitor. At this time, if the potential of the guide plate of the film solar cell is floating, static charges may flow into the metal guide plate, current may flow through the control circuit via the solar cell, and the control circuit may be electrically affected. There is. Therefore, although countermeasures against static electricity are required, the method described in Patent Document 1 is a film in which a countermeasure against static electricity is taken after a solar cell having a glass substrate is attached to a movement, and is a film fixed to a metal guide plate. No consideration has been given to solar cells. In particular, there is no suggestion regarding taking measures against static electricity not only after the film solar cell is attached to the movement but also before the film solar cell is attached.

本発明の目的は、基材としてフィルムを用いた太陽電池を備えるとともに、静電気の影響を受けにくい太陽電池付電子時計を提供することにある。   An object of the present invention is to provide a solar cell-equipped electronic timepiece that is provided with a solar cell using a film as a base material and is less susceptible to static electricity.

本発明の太陽電池付電子時計は、導電性材料により形成された外装ケースと、前記外装ケースに収容される太陽電池ユニットと、電気エネルギーを蓄積する蓄電体を有し、前記外装ケースに収容されるムーブメントと、を備え、前記太陽電池ユニットは、フィルム製の基材を用いた太陽電池と、当該太陽電池の基材の裏面に形成された正極および負極と、前記正極および負極に接触せずに前記基材の裏面に接着された導電性の太陽電池案内板と、を有し、前記太陽電池の正極は、前記蓄電体の正極に導通され、前記太陽電池の負極は、前記蓄電体の負極に導通され、前記太陽電池案内板は、前記蓄電体の正極と負極のうちグランド電極に設定された電極に導通されることを特徴とする。   An electronic timepiece with a solar cell of the present invention has an exterior case formed of a conductive material, a solar cell unit accommodated in the exterior case, and a power storage unit that accumulates electric energy, and is accommodated in the exterior case. A solar cell unit using a film base material, a positive electrode and a negative electrode formed on the back surface of the solar cell base material, and no contact with the positive electrode and the negative electrode. A conductive solar cell guide plate adhered to the back surface of the base material, and the positive electrode of the solar cell is electrically connected to the positive electrode of the power storage unit, and the negative electrode of the solar cell is connected to the power storage unit. The solar cell guide plate is conducted to a negative electrode, and the solar cell guide plate is conducted to an electrode set as a ground electrode among the positive electrode and the negative electrode of the power storage unit.

この発明によれば、太陽電池ユニットにおいて、太陽電池案内板が太陽電池の正極および負極に非接触つまり導通されていないので、太陽電池付電子時計の組み立て前に、太陽電池案内板から太陽電池に静電気の電荷が流れ込むことを防ぐことができる。これにより、太陽電池付電子時計の組み立て前に太陽電池が破損することを防ぐことができる。
また、太陽電池ユニットおよびムーブメントを外装ケースに組み込んで太陽電池付電子時計の組み立てを行った際には、太陽電池の正極が二次電池等の蓄電体の正極に導通され、太陽電池の負極が蓄電体の負極に導通され、太陽電池案内板が蓄電体のグランド電極に設定された電極に導通される。これにより、太陽電池付電子時計の組み立て後においても、太陽電池案内板と太陽電池のいずれかの電極が同じ電位となり、静電気を太陽電池案内板からグランド電極に逃がすことができる。したがって、太陽電池が破損することを防ぐことができるとともに、静電気の電荷が太陽電池を介して制御回路に流れ、制御回路に影響が生じることを防ぐことができる。 According to this invention, in the solar cell unit, since the solar cell guide plate is not in contact with the positive electrode and the negative electrode of the solar cell, that is, is not conducted, the solar cell guide plate is changed from the solar cell guide plate to the solar cell. Static electricity can be prevented from flowing in. Thereby, it can prevent that a solar cell is damaged before an electronic timepiece with a solar cell is assembled.
In addition, when the solar cell unit and the movement are assembled in the exterior case and the electronic watch with the solar cell is assembled, the positive electrode of the solar cell is electrically connected to the positive electrode of the power storage unit such as a secondary battery, and the negative electrode of the solar cell is Conduction is conducted to the negative electrode of the power storage unit, and the solar cell guide plate is conducted to an electrode set as a ground electrode of the power storage unit. Thereby, even after an electronic timepiece with a solar cell is assembled, one of the electrodes of the solar cell guide plate and the solar cell has the same potential, and static electricity can escape from the solar cell guide plate to the ground electrode. Therefore, the solar cell can be prevented from being damaged, and static electricity can be prevented from flowing to the control circuit via the solar cell and affecting the control circuit.

本発明の太陽電池付電子時計において、前記太陽電池ユニットと前記蓄電体の電極とを導通する導通部材を備え、前記導通部材は、前記太陽電池の正極を前記蓄電体の正極に導通する正極コイルばねと、前記太陽電池の負極を前記蓄電体の負極に導通する負極コイルばねと、前記太陽電池案内板を前記蓄電体の正極と負極のうちグランド電極に設定された電極に導通する案内板導通コイルばねと、を有することが好ましい。   In the electronic timepiece with solar cell according to the present invention, the solar cell unit includes a conducting member that conducts the solar cell unit and the electrode of the power storage unit, and the conducting member conducts a positive electrode of the solar cell to a positive electrode of the power storage unit. A spring, a negative coil spring that conducts the negative electrode of the solar cell to the negative electrode of the electricity storage unit, and a guide plate conduction that conducts the solar cell guide plate to an electrode set as a ground electrode of the positive electrode and the negative electrode of the electricity storage unit And a coil spring.

この発明によれば、太陽電池の電極を二次電池等の蓄電体の電極に導通する導通部材として、正極および負極コイルばねと、太陽電池案内板を蓄電体のグランド電極に設定された電極に導通する案内板導通コイルばねとを有する。
そして、太陽電池案内板を文字板や外装ケースで押さえたり、太陽電池案内板にムーブメントに固定するための固定部を形成することで、前記各コイルばねを圧縮して配置できる。従って、太陽電池案内板および太陽電池の電極と、二次電池の電極とに、前記各コイルばねを所定の接触圧で接触でき、各電極を前記各コイルばねを介して確実に導通できる。
また、導通部材としてコイルばねを用いているので、太陽電池ユニットをムーブメントと共に外装ケースに組み込むだけで、簡単に太陽電池案内板および太陽電池の電極を二次電池の電極に導通することができるので、組み立てが簡単である。 According to this invention, the electrode of the solar cell is connected to the electrode of the power storage unit such as the secondary battery, and the positive and negative coil springs and the solar cell guide plate are set to the electrodes set as the ground electrode of the power storage unit. And a guide plate conducting coil spring that conducts.
And each said coil spring can be compressed and arrange | positioned by pressing down a solar cell guide plate with a dial plate or an exterior case, or forming the fixing | fixed part for fixing to a movement to a solar cell guide plate. Accordingly, each coil spring can be brought into contact with the solar cell guide plate, the electrode of the solar cell, and the electrode of the secondary battery with a predetermined contact pressure, and each electrode can be reliably conducted via each coil spring.
Moreover, since the coil spring is used as the conducting member, the solar cell guide plate and the solar cell electrode can be easily conducted to the secondary battery electrode simply by incorporating the solar cell unit into the outer case together with the movement. Easy to assemble.

本発明の太陽電池付電子時計において、前記太陽電池案内板は、前記ムーブメントに固定可能な固定部を備え、前記固定部は、前記太陽電池案内板の中心を挟んで互いに対向配置され、前記正極コイルばねは、前記固定部のうち一方の近傍に設けられ、前記負極コイルばねは、前記固定部のうち他方の近傍に設けられ、前記案内板導通コイルばねは、前記正極コイルばねと前記負極コイルばねのうちグランド電極に導通されるコイルばねの近傍に設けられることが好ましい。   In the electronic timepiece with solar cell according to the present invention, the solar cell guide plate includes a fixing portion that can be fixed to the movement, and the fixing portions are disposed to face each other across the center of the solar cell guide plate. The coil spring is provided in the vicinity of one of the fixed portions, the negative coil spring is provided in the vicinity of the other of the fixed portions, and the guide plate conductive coil spring includes the positive coil spring and the negative coil. It is preferable that the spring is provided in the vicinity of a coil spring that is electrically connected to the ground electrode.

この発明によれば、固定部が前記太陽電池案内板の中心を挟んで互いに対向配置されるので、太陽電池ユニットをムーブメントの面に対し、傾くことなく確実に固定することができる。さらに、正極コイルばねおよび負極コイルばねは、それぞれ互いに対向配置される固定部の近傍に設けられ、案内板導通コイルばねは、正極コイルばねおよび負極コイルばねの一方の近傍に設けられる。すなわち、各コイルばねは、いずれも固定部の近傍に設けられるので、各コイルばねによる付勢力を固定部で受けることができる。特に、案内板導通コイルばねを固定部と離れた場所に設けると、固定部を支点として太陽電池案内板を回転させる力が働き、太陽電池案内板が変形するおそれがある。しかしながら、本発明では、各コイルばねの付勢力を固定部で受けることができるので、太陽電池案内板や太陽電池が変形することを防ぐことができる。   According to the present invention, since the fixing portions are arranged to face each other across the center of the solar cell guide plate, the solar cell unit can be reliably fixed to the movement surface without being inclined. Further, the positive coil spring and the negative coil spring are provided in the vicinity of the fixed portions that are arranged to face each other, and the guide plate conduction coil spring is provided in the vicinity of one of the positive coil spring and the negative coil spring. That is, since each coil spring is provided in the vicinity of the fixed portion, the urging force of each coil spring can be received by the fixed portion. In particular, when the guide plate conducting coil spring is provided at a location away from the fixed portion, a force that rotates the solar cell guide plate with the fixed portion as a fulcrum acts, and the solar cell guide plate may be deformed. However, in this invention, since the urging | biasing force of each coil spring can be received in a fixing | fixed part, it can prevent that a solar cell guide plate and a solar cell deform | transform.

また、本発明の太陽電池付電子時計において、前記太陽電池ユニットと前記蓄電体の電極とを導通する導通部材を備え、前記導通部材は、前記太陽電池の正極を前記蓄電体の正極に導通する正極コイルばねと、前記太陽電池の負極を前記蓄電体の負極に導通する負極コイルばねと、を有し、前記二次電池の正極と負極のうちグランド電極に設定された電極に導通する前記正極コイルばねまたは前記負極コイルばねの一方は、前記太陽電池案内板にも導通することが好ましい。   The electronic timepiece with a solar cell of the present invention further includes a conductive member that conducts the solar cell unit and the electrode of the power storage unit, and the conductive member conducts the positive electrode of the solar cell to the positive electrode of the power storage unit. The positive electrode having a positive coil spring and a negative coil spring that conducts the negative electrode of the solar cell to the negative electrode of the power storage unit, and that conducts to an electrode set as a ground electrode among the positive electrode and the negative electrode of the secondary battery One of the coil spring and the negative coil spring preferably conducts to the solar cell guide plate.

ここで、正極コイルばねまたは前記負極コイルばねの一方は、前記太陽電池案内板にも導通するとは、例えば、正極コイルばねの端面を、太陽電池の正極と、太陽電池案内板とに跨って接触させて導通するものでもよい。また、太陽電池案内板に弾性変形可能な離間部を形成し、この離間部に正極コイルばねの端面を当接させ、正極コイルばねの付勢力で離間部を弾性変形させて前記太陽電池の正極に接触させるものでもよい。
この発明によれば、上述した本発明の効果を奏するとともに、太陽電池案内板と、太陽電池の正極または負極のうち、グランド電極に設定された電極とを、１つのコイルばねで二次電池の電極に導通することができるので、部品点数を減らすことができ、組み立ての手間を削減することができる。また、部品点数を減らすことができるので、これらのコイルばねの配置レイアウトの自由度を高めることができる。 Here, when one of the positive coil spring or the negative coil spring is also conducted to the solar cell guide plate, for example, the end surface of the positive coil spring contacts the positive electrode of the solar cell and the solar cell guide plate. It may be allowed to conduct. In addition, the solar cell guide plate is formed with an elastically deformable separation portion, an end face of the positive coil spring is brought into contact with the separation portion, and the separation portion is elastically deformed by the urging force of the positive coil spring, thereby positive electrode of the solar cell. It may be in contact with.
According to the present invention, the effect of the present invention described above is achieved, and the solar cell guide plate and the electrode set as the ground electrode among the positive electrode or the negative electrode of the solar cell are connected to the secondary battery by one coil spring. Since it can be conducted to the electrode, the number of parts can be reduced, and the labor of assembly can be reduced. Moreover, since the number of parts can be reduced, the degree of freedom in the layout of these coil springs can be increased.

本発明の第一実施形態に係る太陽電池付電子時計を示す正面図。The front view which shows the electronic timepiece with a solar cell which concerns on 1st embodiment of this invention. 前記実施形態の要部を示す分解斜視図。The disassembled perspective view which shows the principal part of the said embodiment. 前記実施形態の要部を示す分解斜視図。The disassembled perspective view which shows the principal part of the said embodiment. 前記実施形態の要部を示す回路図。The circuit diagram which shows the principal part of the said embodiment. 前記実施形態の要部を示す平面図。The top view which shows the principal part of the said embodiment. 前記実施形態の一部拡大断面図。The partially expanded sectional view of the said embodiment. 前記実施形態の一部拡大断面図。The partially expanded sectional view of the said embodiment. 本発明の第二実施形態に係る太陽電池付電子時計の要部を示す分解斜視図。The disassembled perspective view which shows the principal part of the electronic timepiece with solar cell which concerns on 2nd embodiment of this invention. 前記実施形態の一部拡大断面図。The partially expanded sectional view of the said embodiment. 本発明の変形例に係る太陽電池付電子時計の一部を示す斜視図。The perspective view which shows a part of electronic timepiece with a solar cell which concerns on the modification of this invention. 前記変形例の動作説明図。Operation | movement explanatory drawing of the said modification.

（第一実施形態）
以下、本発明の実施の第一実施形態を図面に基づいて説明する。
図１は、第一実施形態に係る太陽電池付電子時計１の平面図である。太陽電池付電子時計１は、図１に示すように、時刻を表示する時刻表示部１０を備えた指針式腕時計（アナログ時計）である。この時刻表示部１０は、時針１１、分針１２、秒針１３、文字板１４を備える。 (First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of an electronic timepiece 1 with a solar cell according to the first embodiment. As shown in FIG. 1, the solar cell equipped electronic timepiece 1 is a pointer-type wristwatch (analog timepiece) including a time display unit 10 for displaying time. The time display unit 10 includes an hour hand 11, a minute hand 12, a second hand 13, and a dial plate 14.

〔太陽電池付電子時計の構成〕
太陽電池付電子時計１は、導電性材料で形成された外装ケース１００を備えている。外装ケース１００は、ほぼリング状に形成されたケーシング（胴）１１０と、ケーシング１１０の裏面側に着脱可能に取り付けられた図示略の裏蓋とを備えている。導電性材料としては、ステンレス、金、チタン材等の金属材料が採用される。外装ケース１００は一般的な構成であるため説明を省略する。なお、ケーシング１１０の表面側には、カバーガラス１２０が装着されている。
外装ケース１００内には、図２に示すように、ムーブメント２と、文字板受けリング部材３と、太陽電池４０を備えた太陽電池ユニット４と、導通部材５と、が配置されている。そして、太陽電池ユニット４の表側には、文字板１４が配置されている。
文字板１４は、各種プラスチック、各種ガラス、各種セラミックス等の非金属材料により形成された透光性の板状部材である。文字板１４は、非金属材料で形成されているため、静電気を逃がしにくい。
ムーブメント２は、図３に示すように、地板２０、蓄電体である二次電池２３、回路基板２４、回路押え板２５、図３では図示しない逆流防止ダイオード２６、ステッピングモーター、駆動輪列等を備える。ムーブメント２の構成は、一般的な構成であるため、説明を簡略する。 [Configuration of electronic watch with solar battery]
The solar cell-equipped electronic timepiece 1 includes an outer case 100 formed of a conductive material. The exterior case 100 includes a casing (body) 110 formed in a substantially ring shape and a back cover (not shown) removably attached to the back side of the casing 110. As the conductive material, a metal material such as stainless steel, gold, or titanium is employed. Since the exterior case 100 has a general configuration, description thereof is omitted. A cover glass 120 is attached to the surface side of the casing 110.
In the exterior case 100, as shown in FIG. 2, the movement 2, the dial receiving ring member 3, the solar cell unit 4 provided with the solar cell 40, and the conducting member 5 are arranged. A dial 14 is disposed on the front side of the solar cell unit 4.
The dial 14 is a translucent plate-like member formed of non-metallic materials such as various plastics, various glasses, and various ceramics. Since the dial 14 is made of a non-metallic material, it is difficult for static electricity to escape.
As shown in FIG. 3, the movement 2 includes a base plate 20, a secondary battery 23 as a power storage unit, a circuit board 24, a circuit holding plate 25, a backflow prevention diode 26, a stepping motor, a driving wheel train, etc. (not shown in FIG. 3). Prepare. Since the structure of the movement 2 is a general structure, description is simplified.

〔太陽電池付電子時計の構造〕
図４は、太陽電池ユニット４とムーブメント２内の各部材との導通を示す回路図である。
本実施形態に係る太陽電池付電子時計１は、太陽電池４０の発電電流により、二次電池２３を充電し、二次電池２３から供給される電力により、回路基板２４に設けられた制御回路２４１を作動し、この制御回路２４１でステッピングモーターなどを制御し、内部時刻を表示する。 [Structure of electronic watch with solar battery]
FIG. 4 is a circuit diagram showing conduction between the solar cell unit 4 and each member in the movement 2.
The electronic timepiece with solar battery 1 according to the present embodiment charges the secondary battery 23 with the generated current of the solar battery 40, and the control circuit 241 provided on the circuit board 24 with the power supplied from the secondary battery 23. The control circuit 241 controls the stepping motor and displays the internal time.

〔地板の構成〕
図３および図５に示すように、地板２０の上面には、暦車である日車２１が配置されている。地板２０には、日車２１よりも外周側に３つの貫通孔２０１，２０２，２０３が設けられている。これらの貫通孔２０１，２０２，２０３に、導通部材５が挿通される。 [Configuration of the main plate]
As shown in FIGS. 3 and 5, a date wheel 21 which is a calendar wheel is arranged on the upper surface of the main plate 20. The main plate 20 is provided with three through holes 201, 202, 203 on the outer peripheral side of the date dial 21. The conduction member 5 is inserted through these through holes 201, 202, 203.

〔二次電池の構成〕
図３および図４に示すように二次電池２３は、例えば、リチウムイオン二次電池等の充電が可能な一般的なボタン型の電池であり、駆動電力を回路基板２４の制御回路２４１に供給する。
このような二次電池２３には、太陽電池４０により発電された発電電流が回路基板２４に形成された配線を介して供給され、当該発電電流により二次電池２３は充電される。二次電池２３の正極２３Ａはグランド電極とされ、回路基板２４のグランド電極である正極に接続され、当該二次電池２３の負極２３Ｂは、回路基板２４の負極に接続される。 [Configuration of secondary battery]
As shown in FIGS. 3 and 4, the secondary battery 23 is a general button-type battery that can be charged, such as a lithium ion secondary battery, and supplies driving power to the control circuit 241 of the circuit board 24. To do.
The secondary battery 23 is supplied with the generated current generated by the solar battery 40 via the wiring formed on the circuit board 24, and the secondary battery 23 is charged by the generated current. The positive electrode 23 </ b> A of the secondary battery 23 is a ground electrode and is connected to the positive electrode that is the ground electrode of the circuit board 24, and the negative electrode 23 </ b> B of the secondary battery 23 is connected to the negative electrode of the circuit board 24.

〔回路基板の構成〕
回路基板２４は、外装ケース１００内において太陽電池ユニット４側（文字板１４側）とは反対側に配置され、地板２０の貫通孔２０１，２０２，２０３に対応する位置に、導通部材５に導通する回路基板２４側の図示しない正極および負極がそれぞれ設けられている。この回路基板２４は、後述する回路押え板２５により地板２０に押圧固定される。 [Configuration of circuit board]
The circuit board 24 is disposed in the exterior case 100 on the side opposite to the solar cell unit 4 side (the dial plate 14 side), and is electrically connected to the conductive member 5 at a position corresponding to the through holes 201, 202, 203 of the ground plane 20. A positive electrode and a negative electrode (not shown) on the circuit board 24 side are provided. The circuit board 24 is pressed and fixed to the base plate 20 by a circuit holding plate 25 described later.

図４に示すように逆流防止ダイオード２６は、太陽電池４０の負極４４と二次電池２３の負極２３Ｂとを結ぶ経路上に設けられている。そして、逆流防止ダイオード２６は、太陽電池４０による発電電圧が低下して二次電池２３の電圧以下となった場合に、二次電池２３から太陽電池４０に電流が流れることを防止している。   As shown in FIG. 4, the backflow prevention diode 26 is provided on a path connecting the negative electrode 44 of the solar cell 40 and the negative electrode 23 </ b> B of the secondary battery 23. The backflow prevention diode 26 prevents a current from flowing from the secondary battery 23 to the solar cell 40 when the power generation voltage by the solar cell 40 decreases to be equal to or lower than the voltage of the secondary battery 23.

制御回路２４１のＶＤＤ端子およびＶＳＳ端子は、二次電池２３の正極（ＶＤＤ）および負極（ＶＳＳ）に接続され、二次電池２３に蓄積された電流で駆動される。そして、制御回路２４１は、図示しない発振器から入力されるクロック信号に基づいて内部時刻を計時し、ステップモーターにパルス信号を出力して内部時刻を表示させる。
さらに、制御回路２４１は、ＬＩＭ端子を備える。ＬＩＭ端子は、二次電池２３への過充電を防止するリミッター機能の端子であり、過充電と判断した場合、例えば、二次電池２３への充電電圧が２．２Ｖ以上となった場合、太陽電池４０の両端をショートすることで、過充電を防止する機能を有している。 The VDD terminal and the VSS terminal of the control circuit 241 are connected to the positive electrode (VDD) and the negative electrode (VSS) of the secondary battery 23, and are driven by the current accumulated in the secondary battery 23. Then, the control circuit 241 measures the internal time based on a clock signal input from an oscillator (not shown) and outputs a pulse signal to the step motor to display the internal time.
Further, the control circuit 241 includes a LIM terminal. The LIM terminal is a terminal of a limiter function for preventing overcharge to the secondary battery 23. When it is determined that the battery is overcharged, for example, when the charge voltage to the secondary battery 23 is 2.2 V or higher, The battery 40 has a function of preventing overcharge by short-circuiting both ends of the battery 40.

〔文字板受けリング部材の構成〕
文字板受けリング部材３は、非透光性の材料（たとえば合成樹脂）により円環状に形成され、後述する太陽電池４０と同系色に着色されている。そして、図２に示すように、文字板受けリング部材３の表面側には、文字板受けリング部材３の内周面に沿って形成され、文字板受けリング部材３の上面３０よりも一段低く形成された太陽電池ユニット支持面３１が形成されている。
また、文字板受けリング部材３は、その平面中心を挟んで対向する二箇所に、図示しない支持フック部が形成されている。この支持フック部が、ムーブメント２に係合し、文字板受けリング部材３はムーブメント２を保持する。 [Configuration of dial plate ring member]
The dial receiving ring member 3 is formed in an annular shape from a non-translucent material (for example, synthetic resin), and is colored in the same color as a solar cell 40 described later. As shown in FIG. 2, the dial receiving ring member 3 is formed on the front surface side along the inner peripheral surface of the dial receiving ring member 3 and is one step lower than the upper surface 30 of the dial receiving ring member 3. The formed solar cell unit support surface 31 is formed.
Further, the dial receiving ring member 3 has support hook portions (not shown) formed at two locations facing each other across the plane center. The support hook portion engages with the movement 2, and the dial receiving ring member 3 holds the movement 2.

また、図２に示すように、文字板受けリング部材３は、支持フック部とは別の位置であって、その平面中心を挟んで対向する二箇所に、後述する太陽電池ユニット４の固定部４５１Ａおよび４５１Ｂを係止する係止部３３を備える。   Further, as shown in FIG. 2, the dial receiving ring member 3 is a position different from the support hook portion, and is fixed to a solar cell unit 4 described later at two locations facing each other across the plane center. A locking portion 33 for locking 451A and 451B is provided.

〔太陽電池ユニットの構成〕
太陽電池ユニット４は、図５に示すように、太陽電池４０と、太陽電池４０の裏面に固定される太陽電池案内板４５とを備える。
太陽電池４０は、平面視略円形状の基材４１と、基材４１の表面側に形成された受光部４２と、一対の電極４３，４４とを備える。一対の電極４３，４４は、正極４３および負極４４とされている。
太陽電池４０は、文字板１４を透過した太陽光が受光部４２に当たることで発電を行い、受光部４２で発電された電力は、前記電極４３，４４から導通部材５を介してムーブメント２に設けられた二次電池２３に充電され、この二次電池２３の出力でステッピングモーター等が駆動される。 [Configuration of solar cell unit]
As shown in FIG. 5, the solar cell unit 4 includes a solar cell 40 and a solar cell guide plate 45 fixed to the back surface of the solar cell 40.
The solar cell 40 includes a base material 41 having a substantially circular shape in plan view, a light receiving unit 42 formed on the surface side of the base material 41, and a pair of electrodes 43 and 44. The pair of electrodes 43 and 44 is a positive electrode 43 and a negative electrode 44.
The solar cell 40 generates power when sunlight that has passed through the dial 14 strikes the light receiving part 42, and the power generated by the light receiving part 42 is provided to the movement 2 from the electrodes 43 and 44 through the conductive member 5. The secondary battery 23 is charged, and a stepping motor or the like is driven by the output of the secondary battery 23.

基材４１は、合成樹脂製のフィルムなどの絶縁材で構成されている。受光部４２は、前記基材４１の表面上に、金属電極層、半導体層、絶縁層、配線電極層、透光性の封止樹脂層などを積層することによって構成されている。
従って、太陽電池４０は、フィルム型の太陽電池である。すなわち、フィルム型の太陽電池とは、基材がガラス等ではなく、合成樹脂のフィルムなどで構成されているものを言う。
受光部４２は、３つの領域に分割されて形成されている。すなわち、太陽電池４０の表面には扇形状の３つの受光部４２が形成されている。そして、本実施形態では、３つの受光部４２の出力を直列接続することで発電電圧を向上させている。 The base material 41 is made of an insulating material such as a synthetic resin film. The light receiving unit 42 is configured by laminating a metal electrode layer, a semiconductor layer, an insulating layer, a wiring electrode layer, a translucent sealing resin layer, and the like on the surface of the substrate 41.
Therefore, the solar cell 40 is a film type solar cell. That is, the film-type solar cell is one in which the base material is composed of a synthetic resin film or the like instead of glass or the like.
The light receiving unit 42 is divided into three regions. That is, three fan-shaped light receiving portions 42 are formed on the surface of the solar cell 40. In this embodiment, the power generation voltage is improved by connecting the outputs of the three light receiving units 42 in series.

〔太陽電池案内板の構成〕
太陽電池案内板４５は、ステンレス板などの導電性部材で構成され、略円板状に形成されている。そして太陽電池案内板４５は、太陽電池４０の基材４１の裏面に、接着剤や粘着テープによって貼り付けられている。
図３にも示すように、太陽電池案内板４５は、太陽電池案内板４５を文字板受けリング部材３に固定するための固定部４５１を備えている。この固定部４５１は、太陽電池案内板４５の中央を挟んで互いに対向配置された２つの固定部４５１Ａ，４５１Ｂを備えている。また、太陽電池案内板４５において、前記電極４３，４４が配置される部分はＵ字状の溝４５２とされ、前記電極４３，４４に太陽電池案内板４５が接触しないように構成されている。 [Configuration of solar cell guide plate]
The solar cell guide plate 45 is made of a conductive member such as a stainless steel plate, and is formed in a substantially disc shape. And the solar cell guide plate 45 is affixed on the back surface of the base material 41 of the solar cell 40 with an adhesive or an adhesive tape.
As shown also in FIG. 3, the solar cell guide plate 45 includes a fixing portion 451 for fixing the solar cell guide plate 45 to the dial receiving ring member 3. The fixing portion 451 includes two fixing portions 451A and 451B that are arranged to face each other with the center of the solar cell guide plate 45 interposed therebetween. Further, in the solar cell guide plate 45, a portion where the electrodes 43 and 44 are disposed is a U-shaped groove 452, and the solar cell guide plate 45 is not in contact with the electrodes 43 and 44.

固定部４５１Ａ，４５１Ｂは、太陽電池案内板４５から折曲されたＬ字状の板部で構成されている。
この太陽電池案内板４５は、後述する導通部材５により二次電池２３の正極２３Ａに導通される。 The fixing portions 451A and 451B are L-shaped plate portions bent from the solar cell guide plate 45.
The solar cell guide plate 45 is electrically connected to the positive electrode 23A of the secondary battery 23 by a conductive member 5 described later.

なお、この太陽電池案内板４５は、太陽電池４０よりも僅かに小さなサイズに形成されており、太陽電池４０の基材４１で全体が被覆されている。このため、太陽電池案内板４５は、太陽電池４０から露出することがなく、文字板１４側から視認されることがない。   The solar cell guide plate 45 is formed in a size slightly smaller than the solar cell 40 and is entirely covered with the base material 41 of the solar cell 40. For this reason, the solar cell guide plate 45 is not exposed from the solar cell 40 and is not visually recognized from the dial 14 side.

前記太陽電池４０の正極４３および負極４４は、それぞれ固定部４５１Ａ，４５１Ｂの近傍に設けられている。
なお、後述するように、太陽電池付電子時計１では、回路基板における正極（ＶＤＤ）および負極（ＶＳＳ）のうち、正極（ＶＤＤ）をグランド電極としている。 The positive electrode 43 and the negative electrode 44 of the solar cell 40 are provided in the vicinity of the fixing portions 451A and 451B, respectively.
As will be described later, in the solar cell equipped electronic timepiece 1, the positive electrode (VDD) of the positive electrode (VDD) and the negative electrode (VSS) in the circuit board is used as the ground electrode.

〔導通部材〕
導通部材５は、圧縮コイルばねで構成される案内板導通コイルばね５１、正極コイルばね５２、および負極コイルばね５３を備える。各コイルばね５１〜５３は、圧縮された状態で地板２０の貫通孔２０１，２０２，２０３内にそれぞれ配置されている。このため、太陽電池ユニット４と、回路基板２４及び回路押え板２５とを確実に導通させることができる。
より具体的には、図６に示すように、案内板導通コイルばね５１は、地板２０の貫通孔２０１に配置され、太陽電池案内板４５と回路押え板２５とを導通する。正極コイルばね５２は、地板２０の貫通孔２０２に配置され、太陽電池４０の正極４３と、回路押え板２５とを導通する。回路押え板２５は、二次電池の正極２３Ａと電気的に導通され、グランド電極に設定されている。したがって、太陽電池案内板４５および太陽電池４０の正極４３は、グランド電極に設定された二次電池の正極２３Ａに電気的に導通している。
図７に示すように、負極コイルばね５３は、地板２０の貫通孔２０３に配置され、太陽電池４０の負極４４と、回路基板２４の負極配線とを導通する。回路基板２４の負極配線は、二次電池の負極２３Ｂと電気的に導通されている。したがって、太陽電池４０の負極４４は、二次電池の負極２３Ｂに電気的に導通している。 [Conductive member]
The conducting member 5 includes a guide plate conducting coil spring 51, a positive coil spring 52, and a negative coil spring 53 configured by compression coil springs. Each coil spring 51-53 is each arrange | positioned in the through-holes 201,202,203 of the ground plane 20 in the compressed state. For this reason, the solar cell unit 4 and the circuit board 24 and the circuit pressing plate 25 can be reliably conducted.
More specifically, as shown in FIG. 6, the guide plate conduction coil spring 51 is disposed in the through hole 201 of the ground plate 20 and conducts the solar cell guide plate 45 and the circuit pressing plate 25. The positive coil spring 52 is disposed in the through hole 202 of the ground plane 20 and conducts the positive electrode 43 of the solar cell 40 and the circuit pressing plate 25. The circuit pressing plate 25 is electrically connected to the positive electrode 23A of the secondary battery and is set as a ground electrode. Therefore, the solar cell guide plate 45 and the positive electrode 43 of the solar cell 40 are electrically connected to the positive electrode 23A of the secondary battery set as the ground electrode.
As shown in FIG. 7, the negative coil spring 53 is disposed in the through hole 203 of the ground plane 20 and conducts the negative electrode 44 of the solar cell 40 and the negative electrode wiring of the circuit board 24. The negative electrode wiring of the circuit board 24 is electrically connected to the negative electrode 23B of the secondary battery. Therefore, the negative electrode 44 of the solar cell 40 is electrically connected to the negative electrode 23B of the secondary battery.

〔太陽電池付電子時計の組み立て〕
次に、図１〜７を参照して、太陽電池付電子時計１の組み立て方法について説明する。
まず、文字板受けリング部材３でムーブメント２を保持する。この際、ムーブメント２の上方から文字板受けリング部材３をはめ込むとともに、文字板受けリング部材３の図示しない支持フック部をムーブメント２の底面に引っ掛けるようにして支持する。また、外装ケース１００のサイズに応じて、ムーブメント２に図示略の中枠を取り付ける。 [Assembly of an electronic watch with solar cells]
Next, with reference to FIGS. 1-7, the assembly method of the electronic timepiece 1 with a solar cell is demonstrated.
First, the movement 2 is held by the dial receiving ring member 3. At this time, the dial receiving ring member 3 is fitted from above the movement 2, and a support hook (not shown) of the dial receiving ring member 3 is supported by being hooked on the bottom surface of the movement 2. Further, an unillustrated middle frame is attached to the movement 2 according to the size of the exterior case 100.

次に、太陽電池ユニット４を以下の手順でムーブメント２に取り付ける。まず、図５に示すように、案内板導通コイルばね５１、正極コイルばね５２、および負極コイルばね５３をそれぞれ地板２０の貫通孔２０１〜２０３に配置してから、太陽電池ユニット支持面３１に太陽電池ユニット４を配置する。その際、太陽電池案内板４５に設けられた固定部４５１Ａおよび４５１Ｂを文字板受けリング部材３の係止部３３に合わせる。   Next, the solar cell unit 4 is attached to the movement 2 in the following procedure. First, as shown in FIG. 5, the guide plate conduction coil spring 51, the positive coil spring 52, and the negative coil spring 53 are arranged in the through holes 201 to 203 of the ground plane 20, respectively, and then the solar cell unit support surface 31 is exposed to the sun. The battery unit 4 is arranged. At that time, the fixing portions 451A and 451B provided on the solar cell guide plate 45 are aligned with the locking portion 33 of the dial receiving ring member 3.

次に、太陽電池案内板４５を、ムーブメント２に対して押し込んで、係止部３３を、固定部４５１Ａ，４５１Ｂに係止させる。これにより、太陽電池ユニット４が文字板受けリング部材３を介して地板２０に取り付けられて、時計厚さ方向および周方向に位置決めされる。
この際、図６および図７に示すように、案内板導通コイルばね５１は、太陽電池案内板４５に接触して、太陽電池案内板４５と導通し、正極および負極コイルばね５２，５３は、太陽電池４０の裏面に形成された電極４３，４４に接触して太陽電池４０と導通する。 Next, the solar cell guide plate 45 is pushed into the movement 2, and the locking portion 33 is locked to the fixing portions 451A and 451B. Thereby, the solar cell unit 4 is attached to the main plate 20 via the dial receiving ring member 3, and is positioned in the clockwise thickness direction and the circumferential direction.
At this time, as shown in FIGS. 6 and 7, the guide plate conductive coil spring 51 is in contact with the solar cell guide plate 45 and is connected to the solar cell guide plate 45, and the positive and negative coil springs 52 and 53 are The electrodes 43 and 44 formed on the back surface of the solar cell 40 are brought into contact with the solar cell 40.

以上の手順により、図５に示すように、太陽電池ユニット４が、ムーブメント２に固定される。
次に、文字板１４を太陽電池ユニット４の表面側から文字板受けリング部材３に保持させ、このムーブメント２等を外装ケース１００に組み込む。最後に、ムーブメント２に二次電池２３を組み込み、図示しない裏蓋をケーシング１１０に取り付けて太陽電池付電子時計１が組み立てられる。そして、裏蓋およびケーシング１１０は、回路押え板２５と導通されて、グランド電位とされる。 Through the above procedure, the solar cell unit 4 is fixed to the movement 2 as shown in FIG.
Next, the dial 14 is held by the dial receiving ring member 3 from the surface side of the solar cell unit 4, and the movement 2 and the like are incorporated in the exterior case 100. Finally, the secondary battery 23 is incorporated into the movement 2 and a back cover (not shown) is attached to the casing 110 to assemble the electronic timepiece 1 with a solar battery. Then, the back cover and the casing 110 are electrically connected to the circuit pressing plate 25 and set to the ground potential.

上述した第一実施形態に係る太陽電池付電子時計１によれば、以下の効果を奏する。
（１）太陽電池ユニット４において、太陽電池案内板４５の太陽電池４０の電極４３，４４に対応する位置にＵ字状の溝４５２を設けた。したがって、太陽電池付電子時計１を組み立てる前の太陽電池ユニット４において、太陽電池４０の電極４３，４４は太陽電池案内板４５に非接触であり、つまり導通されていないので、太陽電池４０に静電気の電荷が流れ込むことを防ぐことができる。これにより、太陽電池付電子時計１を組み立てる前、すなわち、外装ケース１００に太陽電池ユニット４を組み込む前に太陽電池４０が破損することを防ぐことができる。 The electronic timepiece with solar cell 1 according to the first embodiment described above has the following effects.
(1) In the solar cell unit 4, U-shaped grooves 452 are provided at positions corresponding to the electrodes 43 and 44 of the solar cell 40 of the solar cell guide plate 45. Therefore, in the solar cell unit 4 before assembling the solar cell electronic timepiece 1, the electrodes 43 and 44 of the solar cell 40 are not in contact with the solar cell guide plate 45, that is, are not electrically connected. Can be prevented from flowing in. Thereby, it is possible to prevent the solar cell 40 from being damaged before assembling the solar cell-equipped electronic timepiece 1, that is, before assembling the solar cell unit 4 into the exterior case 100.

また、太陽電池ユニット４およびムーブメント２を外装ケース１００に組み込んだ際には、太陽電池案内板４５および太陽電池４０の正極４３が二次電池２３のグランド電極に設定された正極２３Ａに導通される。これにより、外装ケース１００に組み込んだ後においても、太陽電池案内板４５と太陽電池４０の正極４３が同じ電位となり、静電気を太陽電池案内板４５からグランド電極に逃すことができる。したがって、太陽電池４０が破損することを防ぐことができるとともに、静電気の電荷が太陽電池４０を介して制御回路２４１に流れ、制御回路２４１に影響が生じることを防ぐことができる。
本実施形態のようなアナログ時計は、各種プラスチック等で形成された歯車など、非金属材料で形成された部品が多く、静電気を帯電しやすいが、上述の通り、静電気を太陽電池案内板４５からグランド電極に逃すことができるので、制御回路２４１に影響が生じることを防ぐことができる。 Further, when the solar cell unit 4 and the movement 2 are incorporated in the outer case 100, the solar cell guide plate 45 and the positive electrode 43 of the solar cell 40 are electrically connected to the positive electrode 23 </ b> A set as the ground electrode of the secondary battery 23. . Thereby, even after being incorporated in the outer case 100, the solar cell guide plate 45 and the positive electrode 43 of the solar cell 40 have the same potential, so that static electricity can escape from the solar cell guide plate 45 to the ground electrode. Therefore, it is possible to prevent the solar cell 40 from being damaged, and it is possible to prevent static electricity from flowing into the control circuit 241 via the solar cell 40 and affecting the control circuit 241.
An analog timepiece like this embodiment has many parts made of non-metallic materials, such as gears made of various plastics, and is easy to be charged with static electricity. Since it can escape to the ground electrode, it is possible to prevent the control circuit 241 from being affected.

（２）太陽電池案内板４５および太陽電池４０の電極４３，４４を二次電池２３の電極２３Ａ，２３Ｂに導通する導通部材５として、案内板導通コイルばね５１と、正極コイルばね５２と、負極コイルばね５３とを有する。太陽電池案内板４５を文字板１４や外装ケース１００で押さえたり、太陽電池案内板４５にムーブメント２に固定するための固定部を形成することで、これらのコイルばね５１〜５３を、太陽電池ユニット４と回路基板２４および回路押え板２５との間において圧縮して配置できる。したがって、太陽電池ユニット４をムーブメント２と共に、外装ケース１００に組み込むだけで、簡単に太陽電池案内板４５および太陽電池４０の電極４３，４４を二次電池２３の電極２３Ａ，２３Ｂに確実に導通することができ、組み立ても簡単である。 (2) As the conducting member 5 for conducting the solar cell guide plate 45 and the electrodes 43 and 44 of the solar cell 40 to the electrodes 23A and 23B of the secondary battery 23, a guide plate conducting coil spring 51, a positive coil spring 52, and a negative electrode And a coil spring 53. These coil springs 51 to 53 are connected to the solar cell unit by pressing the solar cell guide plate 45 with the dial 14 or the outer case 100 or by forming a fixing portion for fixing the solar cell guide plate 45 to the movement 2. 4 and the circuit board 24 and the circuit pressing plate 25 can be compressed and arranged. Therefore, the solar cell guide plate 45 and the electrodes 43 and 44 of the solar cell 40 are simply and reliably connected to the electrodes 23A and 23B of the secondary battery 23 simply by incorporating the solar cell unit 4 into the outer case 100 together with the movement 2. Can be assembled easily.

（３）固定部４５１Ａ，４５１Ｂを太陽電池案内板４５の中心を挟んで互いに対向配置したので、太陽電池ユニット４をムーブメント２に対し、傾くことなく確実に固定することができる。
さらに、案内板導通コイルばね５１および正極コイルばね５２を固定部４５１Ａの近傍に設け、負極コイルばね５３を固定部４５１Ｂの近傍に設けた。これにより、コイルばね５１〜５３は、いずれも固定部４５１の近傍に設けられるので、各コイルばね５１〜５３の付勢力を固定部４５１で受けることができる。特に、案内板導通コイルばね５１を固定部４５１と離れた場所に設けると、固定部４５１を支点として太陽電池案内板４５を回転させる力が働き、太陽電池案内板４５および太陽電池４０が変形するおそれがある。しかしながら、本実施形態では、コイルばね５１〜５３の付勢力を固定部４５１で受けることができるので、太陽電池案内板４５や太陽電池４０が変形することを防ぐことができる。なお、本実施形態においては、太陽電池案内板４５をステンレスとしているので、剛性が高く、太陽電池案内板４５および太陽電池４０の変形をより一層防ぐことができる。
また、案内板導通コイルばね５１は、太陽電池４０の正極４３に導通する正極コイルばね５２の近傍に設けられるので、導通先の二次電池２３の電極２３Ａ，２３Ｂの形状や位置を大きく変更する必要がない。 (3) Since the fixing portions 451A and 451B are disposed to face each other with the center of the solar cell guide plate 45 interposed therebetween, the solar cell unit 4 can be reliably fixed to the movement 2 without being inclined.
Further, the guide plate conduction coil spring 51 and the positive coil spring 52 are provided in the vicinity of the fixed portion 451A, and the negative coil spring 53 is provided in the vicinity of the fixed portion 451B. Thereby, since all the coil springs 51-53 are provided in the vicinity of the fixing | fixed part 451, the urging | biasing force of each coil spring 51-53 can be received by the fixing | fixed part 451. In particular, when the guide plate conducting coil spring 51 is provided at a location away from the fixed portion 451, a force that rotates the solar cell guide plate 45 using the fixed portion 451 as a fulcrum works, and the solar cell guide plate 45 and the solar cell 40 are deformed. There is a fear. However, in this embodiment, since the urging | biasing force of the coil springs 51-53 can be received by the fixing | fixed part 451, it can prevent that the solar cell guide plate 45 and the solar cell 40 deform | transform. In this embodiment, since the solar cell guide plate 45 is made of stainless steel, the rigidity is high, and the deformation of the solar cell guide plate 45 and the solar cell 40 can be further prevented.
In addition, since the guide plate conduction coil spring 51 is provided in the vicinity of the positive coil spring 52 that conducts to the positive electrode 43 of the solar battery 40, the shape and position of the electrodes 23A and 23B of the secondary battery 23 that is the conduction destination are greatly changed. There is no need.

（第二実施形態）
次に、本発明の第２実施形態について説明する。
本実施形態に係る太陽電池付電子時計１Ａは、正極コイルばね５２を太陽電池４０の正極４３に導通するとともに、太陽電池案内板４５にも導通する点および太陽電池案内板４５の固定部４５１を備えていない点において、第一実施形態と異なる。なお、以下の説明では、既に説明した部分と同一または略同一である部分については、同一の符号を付して説明を省略する。 (Second embodiment)
Next, a second embodiment of the present invention will be described.
In the electronic timepiece with solar cell 1A according to the present embodiment, the positive coil spring 52 is electrically connected to the positive electrode 43 of the solar cell 40 and is also electrically connected to the solar cell guide plate 45 and the fixing portion 451 of the solar cell guide plate 45 is provided. It differs from the first embodiment in that it is not provided. In the following description, parts that are the same as or substantially the same as those already described are assigned the same reference numerals and description thereof is omitted.

本実施形態に係る太陽電池付電子時計１Ａは、図８に示すように、地板２０Ａ、太陽電池案内板４５Ａおよび導通部材５Ａを備える他は、第一実施形態における太陽電池付電子時計１と同様の構成を有する。
地板２０Ａは、３つの貫通孔２０１〜２０３の代わりに、導通部材５Ａを導通する２つの貫通孔２０２Ａ、２０３を備える他は、第一実施形態の地板２０と同様の構成を有する。
太陽電池案内板４５Ａは、固定部４５１を有していない他は、第一実施形態の太陽電池案内板４５と同様の構成を有する。
導通部材５Ａは、正極コイルばね５２Ａと、負極コイルばね５３とを備え、正極コイルばね５２Ａは、地板２０の貫通孔２０２Ａに配置されることで、太陽電池４０の正極４３と太陽電池案内板４５Ａとに跨って配置される。 As shown in FIG. 8, the electronic timepiece with solar cell 1A according to the present embodiment is the same as the electronic timepiece with solar cell 1 in the first embodiment, except that a ground plate 20A, a solar cell guide plate 45A, and a conducting member 5A are provided. It has the composition of.
The ground plane 20A has the same configuration as that of the ground plane 20 of the first embodiment except that it includes two through holes 202A and 203 that conduct the conducting member 5A instead of the three through holes 201 to 203.
The solar cell guide plate 45A has the same configuration as that of the solar cell guide plate 45 of the first embodiment, except that the fixed portion 451 is not provided.
The conducting member 5A includes a positive coil spring 52A and a negative coil spring 53, and the positive coil spring 52A is disposed in the through hole 202A of the ground plane 20 so that the positive electrode 43 of the solar cell 40 and the solar cell guide plate 45A. It is arranged across.

このような太陽電池付電子時計１は、第一実施形態と同様にして、文字板受けリング部材３でムーブメント２を保持後、以下の手順で組み立てられる。
まず、正極コイルばね５２Ａおよび負極コイルばね５３をそれぞれ地板２０の貫通孔２０２Ａおよび２０３に配置してから、太陽電池ユニット支持面３１に太陽電池ユニット４を配置する。その際、太陽電池４０の正極４３および太陽電池案内板４５Ａを貫通孔２０２Ａに合わせ、太陽電池４０の負極４４を貫通孔２０３に合わせて配置する。次いで、図８では図示しない文字板１４を太陽電池ユニット４の表面側から文字板受けリング部材３に保持させ、これらを外装ケース１００に収容する。これにより、太陽電池ユニット４が文字板１４や外装ケース１００に挟まれ、ムーブメント２に押し付けられて、正極コイルばね５２および負極コイルばね５３が圧縮される。この際、図９に示すように、太陽電池４０の正極４３と、太陽電池案内板４５Ａとは、正極コイルばね５２Ａにより、同時に回路押え板２５に導通される。一方、太陽電池４０の負極４４は、前述した第一実施形態において図６で説明したように、二次電池２３の負極２３Ｂに導通される。以上のように、太陽電池４０の正極４３、負極４４および太陽電池案内板４５Ａが二次電池２３の電極２３Ａ，２３Ｂに導通され、太陽電池付電子時計１Ａが組み立てられる。 Such an electronic timepiece with solar cell 1 is assembled in the following procedure after holding the movement 2 with the dial receiving ring member 3 in the same manner as in the first embodiment.
First, after the positive coil spring 52 </ b> A and the negative coil spring 53 are disposed in the through holes 202 </ b> A and 203 of the ground plane 20, the solar cell unit 4 is disposed on the solar cell unit support surface 31. At that time, the positive electrode 43 and the solar cell guide plate 45A of the solar cell 40 are aligned with the through hole 202A, and the negative electrode 44 of the solar cell 40 is aligned with the through hole 203. Next, the dial 14 (not shown in FIG. 8) is held by the dial receiving ring member 3 from the surface side of the solar cell unit 4 and accommodated in the outer case 100. As a result, the solar cell unit 4 is sandwiched between the dial 14 and the outer case 100 and pressed against the movement 2, and the positive coil spring 52 and the negative coil spring 53 are compressed. At this time, as shown in FIG. 9, the positive electrode 43 of the solar cell 40 and the solar cell guide plate 45A are simultaneously conducted to the circuit pressing plate 25 by the positive coil spring 52A. On the other hand, the negative electrode 44 of the solar cell 40 is electrically connected to the negative electrode 23B of the secondary battery 23 as described in FIG. 6 in the first embodiment described above. As described above, the positive electrode 43, the negative electrode 44, and the solar cell guide plate 45A of the solar cell 40 are electrically connected to the electrodes 23A and 23B of the secondary battery 23, and the electronic timepiece with solar cell 1A is assembled.

以上説明した第二実施形態に係る太陽電池付電子時計１Ａによれば、前述の太陽電池付電子時計１における効果（１）〜（２）と同様の効果を奏することができる他、以下の効果を奏することができる。
太陽電池４０の正極４３と太陽電池案内板４５Ａとを、１本の正極コイルばね５２で同時に二次電池２３の正極２３Ａに導通させるので、正極４３と、太陽電池案内板４５とを別々に二次電池の正極２３Ａに導通させる場合に比べて、部品点数を少なくすることができ、組み立ての手間を削減することができる。また、部品点数が減ることにより、正極コイルばね５２の配置レイアウトの自由度を高めることができる。
さらに、太陽電池案内板４５Ａに固定部を設けなかったので、太陽電池案内板４５Ａが簡単な構造になり、加工が簡単である。したがって、太陽電池付電子時計１Ａの製造コストを低減することができる。 According to 1 A of electronic timepieces with a solar cell which concerns on 2nd embodiment demonstrated above, there can exist an effect similar to effect (1)-(2) in the above-mentioned electronic timepiece with solar cells 1, and the following effects. Can be played.
Since the positive electrode 43 of the solar cell 40 and the solar cell guide plate 45A are simultaneously conducted to the positive electrode 23A of the secondary battery 23 by one positive coil spring 52, the positive electrode 43 and the solar cell guide plate 45 are separately connected to each other. Compared to the case of conducting to the positive electrode 23A of the secondary battery, the number of parts can be reduced, and the labor for assembly can be reduced. Moreover, the freedom degree of the arrangement layout of the positive coil spring 52 can be improved by reducing the number of parts.
Furthermore, since no fixing portion is provided on the solar cell guide plate 45A, the solar cell guide plate 45A has a simple structure and is easy to process. Therefore, the manufacturing cost of the solar cell equipped electronic timepiece 1A can be reduced.

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

前記実施形態では、太陽電池ユニット４において、太陽電池案内板４５にＵ字状の溝４５２を設けて、太陽電池案内板４５と太陽電池４０の正極４３とが導通しないよう構成したが、図１０に示すように、太陽電池案内板４５において、太陽電池４０の正極４３に対応する位置に弾性変形可能な離間部４５４を設けてもよい。
図１１（Ａ）に示すように離間部４５４は、太陽電池案内板４５の一部に太陽電池４０と離間する方向に折曲された段差部４５６を備え、太陽電池付電子時計１の組み立て前において、太陽電池４０と離間して隙間を有するよう設けられている。そして、離間部４５４は、太陽電池４０に対向する面に突起部４５７を備える。そして、太陽電池ユニット４がムーブメント２に固定される際、正極コイルばね５２が、まず、離間部４５４に導通される。ついで、図９（Ｂ）に示すように、正極コイルばね５２により離間部４５４が太陽電池４０に向かって付勢されて、離間部４５４が撓んで突起部４５７と太陽電池４０の正極４３が接触する。これにより、太陽電池案内板４５と太陽電池４０の正極４３とが導通される。 In the above embodiment, the solar cell unit 4 is configured such that the solar cell guide plate 45 is provided with the U-shaped groove 452 so that the solar cell guide plate 45 and the positive electrode 43 of the solar cell 40 do not conduct. As shown in FIG. 4, in the solar cell guide plate 45, a spacing portion 454 that can be elastically deformed may be provided at a position corresponding to the positive electrode 43 of the solar cell 40.
As shown in FIG. 11A, the separation portion 454 includes a step portion 456 bent in a direction away from the solar cell 40 in a part of the solar cell guide plate 45, and before assembling the electronic timepiece 1 with solar cell. In FIG. 3, the solar cell 40 is provided so as to be spaced apart from the solar cell 40. The separation portion 454 includes a protrusion 457 on the surface facing the solar cell 40. When the solar cell unit 4 is fixed to the movement 2, the positive coil spring 52 is first conducted to the separation portion 454. Next, as shown in FIG. 9B, the separation portion 454 is urged toward the solar cell 40 by the positive coil spring 52, and the separation portion 454 is bent so that the projection 457 and the positive electrode 43 of the solar cell 40 are in contact with each other. To do. Thereby, the solar cell guide plate 45 and the positive electrode 43 of the solar cell 40 are electrically connected.

すなわち、本変形例においては、太陽電池案内板４５を二次電池２３の正極２３Ａに導通するための案内板導通コイルばね５１を正極コイルばね５２と別に設ける必要がない。したがって、部品点数を減らし、組み立ての手間を削減することができる。なお、太陽電池４０の負極４４は、前記実施形態と同様に太陽電池案内板４５にＵ字状の溝４５２を設け、負極コイルばね５３用いて、二次電池２３の負極２３Ｂに導通させる。   That is, in this modification, it is not necessary to provide the guide plate conducting coil spring 51 for conducting the solar cell guide plate 45 to the positive electrode 23A of the secondary battery 23 separately from the positive coil spring 52. Therefore, the number of parts can be reduced, and the labor of assembly can be reduced. Note that the negative electrode 44 of the solar cell 40 is provided with a U-shaped groove 452 in the solar cell guide plate 45 in the same manner as in the above embodiment, and is electrically connected to the negative electrode 23B of the secondary battery 23 using the negative coil spring 53.

また、前記実施形態では、導通部材５をコイルばねにより構成したが、これに限らず、太陽電池ユニット４と、回路基板２４や二次電池２３とを互いに導通させることが可能であれば、他の構成を採用してもよい。
前記実施形態では、二次電池２３の正極２３Ａをグランド電極に設定したが、二次電池２３の負極２３Ｂをグランド電極に設定してもよい。 Moreover, in the said embodiment, although the conduction | electrical_connection member 5 was comprised by the coil spring, if not only this but the solar cell unit 4 and the circuit board 24 and the secondary battery 23 can be mutually connected, others The configuration may be adopted.
In the embodiment, the positive electrode 23A of the secondary battery 23 is set as the ground electrode, but the negative electrode 23B of the secondary battery 23 may be set as the ground electrode.

さらに、太陽電池案内板４５を二次電池２３の負極２３Ｂと導通されてもよい。太陽電池案内板４５を負極２３Ｂに導通することで、コンデンサーが正極−負極間に形成されたものと同様になり、前記実施形態に比べて更に耐静電気性が向上する。
前記実施形態では、太陽電池案内板４５を、接着剤や粘着テープで太陽電池４０の裏面に固定していたが、他の固定方法で固定してもよい。
また、蓄電体としては、二次電池２３に限らず、キャパシターなどの充電可能な機器であればよい。
また、前記実施形態では、本発明に係る太陽電池付電子時計１，１Ａとして、腕時計タイプの時計を例示して説明したが、これに限らず、壁掛け時計等、他のタイプの時計であってもよい。 Further, the solar cell guide plate 45 may be electrically connected to the negative electrode 23B of the secondary battery 23. By conducting the solar cell guide plate 45 to the negative electrode 23B, it becomes the same as that in which the capacitor is formed between the positive electrode and the negative electrode, and the electrostatic resistance is further improved as compared with the above embodiment.
In the said embodiment, although the solar cell guide plate 45 was fixed to the back surface of the solar cell 40 with the adhesive agent or the adhesive tape, you may fix with another fixing method.
Further, the power storage unit is not limited to the secondary battery 23 and may be any rechargeable device such as a capacitor.
Moreover, in the said embodiment, although the wristwatch type timepiece was illustrated and demonstrated as the electronic timepiece with solar cells 1, 1A according to the present invention, it is not limited to this, and other types of timepieces such as a wall clock. Also good.

１…太陽電池付電子時計、２…ムーブメント、４…太陽電池ユニット、５，５Ａ…導通部材、２３…二次電池（蓄電体）、４０…太陽電池、４１…基材、４５，４５Ａ…太陽電池案内板、４５１…固定部、５１…案内板導通コイルばね、５２，５２Ａ…正極コイルばね、５３…負極コイルばね、４３，２３Ａ…正極、４４，２３Ｂ…負極、１００…外装ケース。   DESCRIPTION OF SYMBOLS 1 ... Electronic timepiece with solar cell, 2 ... Movement, 4 ... Solar cell unit, 5, 5A ... Conductive member, 23 ... Secondary battery (electric storage body), 40 ... Solar cell, 41 ... Base material, 45, 45A ... Sun Battery guide plate, 451 ... fixed portion, 51 ... guide plate conducting coil spring, 52, 52A ... positive coil spring, 53 ... negative coil spring, 43,23A ... positive electrode, 44,23B ... negative electrode, 100 ... exterior case.

Claims (4)

導電性材料により形成された外装ケースと、
非金属材料である文字板と、
地板と、
前記地板に配置された日車と、
前記地板および前記日車と、前記文字板との間に配置された太陽電池ユニットと、
電気エネルギーを蓄積する蓄電体とを有し、
前記太陽電池ユニットは、フィルム製の基材を用いた太陽電池と、当該太陽電池の基材の裏面に形成された正極および負極と、前記基材の裏面に接着された導電性の太陽電池案内板と、を有し、
前記太陽電池の正極は、前記蓄電体の正極に導通され、
前記太陽電池の負極は、前記蓄電体の負極に導通され、
前記太陽電池案内板は、前記文字板側から前記日車を視認可能な形状であり、前記蓄電体の正極と負極のうちグランド電極に設定された電極に導通される
ことを特徴とする太陽電池付電子時計。 An outer case formed of a conductive material;
A dial that is a non-metallic material;
With the main plate,
A date wheel arranged on the main plate;
A solar cell unit disposed between the main plate and the date wheel, and the dial,
A power storage unit for storing electrical energy,
The solar cell unit includes a solar cell using a film substrate, a positive electrode and a negative electrode formed on the back surface of the solar cell substrate, and a conductive solar cell guide bonded to the back surface of the substrate. A board, and
The positive electrode of the solar cell is electrically connected to the positive electrode of the power storage unit,
The negative electrode of the solar cell is electrically connected to the negative electrode of the power storage unit,
The solar cell guide plate has a shape that allows the date dial to be visually recognized from the dial side, and is electrically connected to an electrode set as a ground electrode among a positive electrode and a negative electrode of the power storage unit. Electronic clock with. 請求項１に記載の太陽電池付電子時計において、
前記太陽電池ユニットと前記蓄電体の電極とを導通する導通部材を備え、
前記導通部材は、
前記太陽電池の正極を前記蓄電体の正極に導通する正極コイルばねと、
前記太陽電池の負極を前記蓄電体の負極に導通する負極コイルばねと、
前記太陽電池案内板を前記蓄電体の正極と負極のうちグランド電極に設定された電極に導通する案内板導通コイルばねと、を有する
ことを特徴とする太陽電池付電子時計。 The electronic timepiece with solar cell according to claim 1,
A conductive member that conducts the solar cell unit and the electrode of the power storage unit;
The conducting member is
A positive coil spring that conducts the positive electrode of the solar cell to the positive electrode of the power storage unit;
A negative coil spring that conducts the negative electrode of the solar cell to the negative electrode of the power storage unit;
An electronic timepiece with a solar cell, comprising: a guide plate conduction coil spring that conducts the solar cell guide plate to an electrode set as a ground electrode among a positive electrode and a negative electrode of the power storage unit. 請求項２に記載の太陽電池付電子時計において、
前記太陽電池案内板は、ムーブメントに固定可能な固定部を備え、
前記固定部は、前記太陽電池案内板の中心を挟んで配置され、
前記正極コイルばねは、前記固定部のうち一方側に設けられ、
前記負極コイルばねは、前記固定部のうち他方側に設けられ、
前記案内板導通コイルばねは、前記正極コイルばねと前記負極コイルばねのうちグラン
ド電極に導通されるコイルばね側に設けられる
ことを特徴とする太陽電池付電子時計。 The electronic timepiece with a solar cell according to claim 2,
The solar cell guide plate includes a fixing portion that can be fixed to a movement,
The fixed portion is disposed across the center of the solar cell guide plate,
The positive coil spring is provided on one side of the fixed portion,
The negative coil spring is provided on the other side of the fixed portion,
The guide plate conducting coil spring is provided on a coil spring side which is conducted to a ground electrode among the positive coil spring and the negative coil spring. An electronic timepiece with a solar cell. 請求項１に記載の太陽電池付電子時計において、
前記太陽電池ユニットと前記蓄電体の電極とを導通する導通部材を備え、
前記導通部材は、
前記太陽電池の正極を前記蓄電体の正極に導通する正極コイルばねと、
前記太陽電池の負極を前記蓄電体の負極に導通する負極コイルばねと、を有し、
前記蓄電体の正極と負極のうちグランド電極に設定された電極に導通する前記正極コイルばねまたは前記負極コイルばねの一方は、前記太陽電池案内板にも導通する
ことを特徴とする太陽電池付電子時計。 The electronic timepiece with solar cell according to claim 1,
A conductive member that conducts the solar cell unit and the electrode of the power storage unit;
The conducting member is
A positive coil spring that conducts the positive electrode of the solar cell to the positive electrode of the power storage unit;
A negative coil spring that conducts the negative electrode of the solar cell to the negative electrode of the power storage unit,
One of the positive coil spring or the negative coil spring that conducts to an electrode set as a ground electrode among the positive electrode and the negative electrode of the power storage unit also conducts to the solar cell guide plate. clock.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62160392U (en) * 1986-04-01 1987-10-12
JPS6421386A (en) * 1987-07-16 1989-01-24 Gutsudo Air Japan Kk Solar analogue quartz time-piece
US6429840B1 (en) * 1999-09-27 2002-08-06 Citizen Watch Co., Ltd. Method of driving color liquid crystal display panel and method of controlling display of timepiece
JP2006047234A (en) * 2004-08-09 2006-02-16 Seiko Epson Corp Timepiece with radio function
JP2011021929A (en) * 2009-07-14 2011-02-03 Seiko Epson Corp Timepiece with wireless function

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62160392U (en) * 1986-04-01 1987-10-12
JPS6421386A (en) * 1987-07-16 1989-01-24 Gutsudo Air Japan Kk Solar analogue quartz time-piece
US6429840B1 (en) * 1999-09-27 2002-08-06 Citizen Watch Co., Ltd. Method of driving color liquid crystal display panel and method of controlling display of timepiece
JP2006047234A (en) * 2004-08-09 2006-02-16 Seiko Epson Corp Timepiece with radio function
JP2011021929A (en) * 2009-07-14 2011-02-03 Seiko Epson Corp Timepiece with wireless function

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