JP5072554B2

JP5072554B2 - SWITCH DEVICE, ROTARY POSITION DETECTION DEVICE HAVING THE SAME, AND ELECTRONIC WATCH

Info

Publication number: JP5072554B2
Application number: JP2007309061A
Authority: JP
Inventors: 健太郎多田
Original assignee: Seiko Instruments Inc
Current assignee: Seiko Instruments Inc
Priority date: 2007-11-29
Filing date: 2007-11-29
Publication date: 2012-11-14
Anticipated expiration: 2027-11-29
Also published as: JP2009133688A

Description

本発明は、月が変わるごとに自動的に日付を更新する月末無修正機能を備えた時計の２４時間車等の回転位置を検出するに適したスイッチ装置、並びにこれを備えた回転位置検出装置及び電子時計に係る。 The present invention relates to a switch device suitable for detecting the rotational position of a 24-hour wheel or the like of a clock having a month-end uncorrected function that automatically updates the date each time the month changes, and the rotational position detecting device including the switch device And electronic watches.

２４時間車の回転位置を検出するためのスイッチ装置として、周方向に間隔をおいて配置された二つの接点端子に対して順次接触可能な接点部を渦巻き状ばね部の先端に設け該渦巻き状ばね部を該渦巻きの中心軸線のまわりで正逆両方向に回転可能にしたものは、知られている（特許文献１）。 As a switch device for detecting the rotational position of a 24-hour car, a contact portion capable of sequentially contacting two contact terminals arranged at intervals in the circumferential direction is provided at the tip of the spiral spring portion. It is known that the spring portion is rotatable in both forward and reverse directions around the central axis of the spiral (Patent Document 1).

しかしながら、このスイッチ装置では、例えば、渦巻きの方向に沿う向きに渦巻き状ばね部が回転される際に該渦巻き状ばね部が先端の接点部を介して接点端子から受ける抵抗が、該渦巻き状ばね部が逆方向に回転される場合よりも大きくなるのを避け難く、長期間にわたる使用の間に渦巻き状ばね部が損傷を受ける虞れがあり、該渦巻き状ばね部を回転駆動するモータに対する負荷が増大するのを避け難い。なお、このスイッチ装置において、針回し位置に引出された巻真の回転に伴う２４時間車の回転方向を検出する場合、巻真の回転に応じて直接的発生される巻真回転信号とスイッチ装置の回転検出信号とを組合わせて２４時間車の回転方向を検出する。 However, in this switch device, for example, when the spiral spring portion is rotated in a direction along the direction of the spiral, the resistance that the spiral spring portion receives from the contact terminal via the contact portion at the tip is the spiral spring. It is difficult to avoid that the part is larger than when the part is rotated in the reverse direction, and the spiral spring part may be damaged during long-term use, and the load on the motor that rotationally drives the spiral spring part Is difficult to avoid. In this switch device, when detecting the rotation direction of the 24-hour wheel accompanying the rotation of the winding stem pulled out to the needle turning position, the winding stem rotation signal directly generated according to the rotation of the winding stem and the switching device The rotation direction of the 24-hour vehicle is detected in combination with the rotation detection signal.

一方、回転軸に対して相互に直径方向に延びた一対の腕部の先端部を回路基板に圧接させ、該回路基板上の一対の接点パターンと接触させるようにした回転位置検出のためのスイッチ装置も知られている（特許文献２）。 On the other hand, a switch for detecting a rotational position in which the tip portions of a pair of arms extending in the diameter direction with respect to the rotation axis are brought into pressure contact with the circuit board and brought into contact with the pair of contact patterns on the circuit board. An apparatus is also known (Patent Document 2).

しかしながら、この特許文献２のスイッチ装置では、金属製腕部の接点となる先端部が常時回路基板の表面に圧接されていることから、該基板や接点パターンの削れや磨耗が生じるのを避け難い。
特開２００６−２１４８８７号公報特開２０００−５６０４６号公報 However, in the switch device of Patent Document 2, since the tip portion that is a contact point of the metal arm portion is always pressed against the surface of the circuit board, it is difficult to avoid the substrate and the contact pattern from being scraped or worn. .
JP 2006-214877 A JP 2000-56046 A

本発明は、前記諸点に鑑みなされたものであり、その目的とするところは、回転駆動源に対する負荷を最低限に抑えた状態で、長時間安定に動作され得るスイッチ装置、これを備えた回転位置検出装置及び該スイッチ装置または該回転位置検出装置を備えた電子時計を提供することにある。 The present invention has been made in view of the above-described points, and an object of the present invention is to provide a switch device that can be stably operated for a long time in a state in which a load on a rotational drive source is minimized, and a rotation provided with the switch device. An object of the present invention is to provide a position detection device and an electronic timepiece including the switch device or the rotation position detection device.

本発明のスイッチ装置は、前記目的を達成すべく、地板に対して垂直な回転中心軸線のまわりで回転可能で且つ該中心軸線の延在方向に地板に対して移動可能なスイッチ本体であって、該中心軸線に対して径方向に離れた部位において地板に向かって突出した複数の脚部、及び該複数の脚部のうち一つの脚部の地板とは反対側の端部において地板とは反対向きに突出したスイッチ接点部を備えたものと、前記スイッチ本体の複数の脚部の地板側端部が地板の対向表面に当接するように、スイッチ本体に対して地板方向の弾性力を与えるばね部を備えた弾性偏倚手段と、前記スイッチ本体が回転された際に、該スイッチ本体を地板の延在面に対して垂直な向きに変位させるべく地板の表面に形成された突出壁部を含む作動壁部と、スイッチ本体の回転の際にスイッチ本体が作動壁部の突出壁部によって地板の延在面に垂直な向きに変位された際に、スイッチ本体の前記スイッチ接点部と当接するように地板に対して対向配置された回路側接点とを有する。 In order to achieve the above object, the switch device of the present invention is a switch body that is rotatable around a rotation center axis perpendicular to the ground plane and movable relative to the ground plane in the extending direction of the center axis. A plurality of legs projecting toward the ground plane at a portion radially away from the central axis, and a ground plane at an end opposite to the ground plane of one of the plurality of legs. Applying an elastic force in the direction of the ground plane to the switch body so that the ground contact side ends of the plurality of leg portions of the switch body are in contact with the opposite surface of the ground plane An elastic biasing means having a spring portion, and a protruding wall portion formed on the surface of the ground plane so as to displace the switch body in a direction perpendicular to the extending surface of the ground plane when the switch body is rotated. Including working wall and switch body When the switch body is displaced by the projecting wall portion of the operating wall portion in a direction perpendicular to the extending surface of the ground plate during rotation, the switch body is disposed opposite to the ground plate so as to contact the switch contact portion of the switch body. Circuit side contacts.

本発明のスイッチ装置では、地板に対して垂直な回転中心軸線のまわりで回転可能で且つ該中心軸線の延在方向に地板に対して移動可能なスイッチ本体の複数の脚部の地板側端部を弾性偏倚手段によって地板の表面に当接させるようにしておくと共に、スイッチ本体が回転された際に該スイッチ本体を地板の延在面に対して垂直な向きに変位させる突出壁部を含む作動壁部を地板の表面に形成してあるので、スイッチ本体の回転位置に応じて、スイッチ本体が地板表面の凹凸に倣いつつ地板の延在面に垂直な方向に偏倚され得る。ここで、地板表面とスイッチ本体の脚部の地板側端部との接触は、該端部を地板表面の凹凸に倣わせ得る力であれば足りるので、最低限の押圧力にし得るから、当該端部と地板表面との間の摺動に伴う磨耗や削れの虞れを最低限に抑え得る。なお、このとき、弾性偏倚手段は、典型的には、スイッチ本体のうち回転軸となる部分を押える。但し、所望ならば、他の部分でもよい。また、この弾性偏倚手段は、単に弾性力を付与するだけでなく、典型的には、スイッチ本体の電気的な信号の入出力端子をなす。 In the switch device of the present invention, the base plate side end portions of the plurality of leg portions of the switch body that can rotate around the rotation center axis perpendicular to the base plate and can move with respect to the base plate in the extending direction of the center axis. And an operation including a protruding wall portion that displaces the switch body in a direction perpendicular to the extending surface of the ground plane when the switch body is rotated. Since the wall portion is formed on the surface of the ground plane, the switch body can be biased in a direction perpendicular to the extending surface of the ground plane while following the unevenness of the ground plane surface according to the rotational position of the switch body. Here, the contact between the ground plate surface and the ground plate side end of the leg portion of the switch body is sufficient as long as it is a force that can follow the unevenness of the ground plate surface. It is possible to minimize the possibility of wear and scraping due to sliding between the end portion and the ground plane surface. At this time, the elastic biasing means typically presses the portion of the switch body that becomes the rotating shaft. However, other portions may be used if desired. Further, the elastic biasing means not only simply applies an elastic force but also typically serves as an input / output terminal for an electrical signal of the switch body.

また、本発明のスイッチ装置では、スイッチ本体の回転の際にスイッチ本体が作動壁部の突出壁部によって地板の延在面に垂直な向きに変位された際に、スイッチ本体の複数の脚部のうち一つの脚部の地板とは反対側の端部において地板とは反対向きに突出したスイッチ接点部と当接するように、回路側接点が地板に対して対向配置されているので、地板表面の凹凸に倣ってスイッチ本体が地板の延在面に垂直な方向に変位された際にスイッチ本体の接点部が回路側接点に当接するから、大きな押付け力がなくても、その接触を確実に行わせ得る。本発明のスイッチ装置では、スイッチ本体と接点部は、該接点部が回路側接点と当接する間だけ該回路側接点のある部分（典型的には、回路基板）に押付けられるので、該回路側接点のある部分（典型的には、回路基板）の磨耗等を生じさせる虞れを最低限に抑え得る。なお、押付け力が過大になるのを避けるためには、例えば、前記弾性偏倚手段に別のばね部を設けておいて、該別のばね部によって所望の弾性支持力で回路側接点のある部分を背後から支える。従って、本発明のスイッチ装置は、回転駆動源に対する負荷を最低限に抑えた状態で、長時間安定に動作され得る。 Further, in the switch device of the present invention, when the switch body is displaced in the direction perpendicular to the extending surface of the main plate by the projecting wall portion of the operating wall portion when the switch body is rotated, the plurality of leg portions of the switch body Since the circuit side contact is disposed opposite to the ground plate so as to abut the switch contact portion projecting in the opposite direction to the ground plate at the end opposite to the ground plate of one leg, the ground plate surface When the switch body is displaced in the direction perpendicular to the surface of the main plate following the unevenness of the switch, the contact part of the switch body abuts the circuit side contact, so that even if there is no large pressing force, the contact is ensured Can be done. In the switch device of the present invention, the switch body and the contact portion are pressed against a portion (typically a circuit board) of the circuit side contact only while the contact portion is in contact with the circuit side contact. The possibility of causing wear or the like of a portion (typically, a circuit board) with contacts can be minimized. In order to avoid an excessive pressing force, for example, another spring portion is provided in the elastic biasing means, and a portion having a circuit side contact with a desired elastic supporting force by the another spring portion. Support from behind. Therefore, the switch device of the present invention can be stably operated for a long time in a state where the load on the rotational drive source is minimized.

なお、本発明のスイッチ装置は、スイッチ本体の回転方向に依存する構造を実際上有しないので、該正逆両方向の回転負荷を同等にすることが可能になる。 Since the switch device of the present invention does not actually have a structure that depends on the rotation direction of the switch body, the rotational loads in both the forward and reverse directions can be made equal.

本発明のスイッチ装置では、典型的には、前記回路側接点は、スイッチ本体が回転される際に該スイッチ本体のスイッチ接点部が移動する円に沿って配置された二つの回路側接点部を有する。 In the switch device of the present invention, typically, the circuit side contact includes two circuit side contact portions arranged along a circle along which the switch contact portion of the switch body moves when the switch body is rotated. Have.

その場合、スイッチ本体の回転方向を決定することが可能になる。 In that case, the rotation direction of the switch body can be determined.

本発明のスイッチ装置では、典型的には、二つの回路側接点部の間の間隔（間隙の大きさ）がスイッチ本体のスイッチ接点部の大きさよりも小さい。 In the switch device of the present invention, typically, the distance between the two circuit side contact portions (the size of the gap) is smaller than the size of the switch contact portion of the switch body.

その場合、スイッチ本体のスイッチ接点部が、二つの回路側接点部の一方に接触した後、両方に接触し、その後で他方に接触することが連続的に行われ得るから、巻真の回転検出手段の如き他の回転検出手段の助けなくして、スイッチ本体の回転方向を決定し得る。 In that case, since the switch contact part of the switch body can contact one of the two circuit side contact parts, then contact both, and then contact the other, it is possible to detect rotation of the winding stem. The direction of rotation of the switch body can be determined without the aid of other rotation detection means such as means.

なお、二つの回路側接点部の間の間隔がスイッチ本体のスイッチ接点部の大きさよりも大きい場合であって例えばスイッチ本体が２４時間真と一体的に形成されているような場合には、例えば、特許文献１と同様に巻真回転検出手段による巻真の回転の検出と併用することにより、スイッチ本体の回転方向を検出すればよい。 In the case where the distance between the two circuit side contact portions is larger than the size of the switch contact portion of the switch body, for example, when the switch body is formed integrally with the true for 24 hours, Similarly to Patent Document 1, the rotation direction of the switch body may be detected by using together with the detection of the winding stem rotation by the winding stem rotation detecting means.

本発明のスイッチ装置では、典型的には、前記回路側接点部は、地板に平行に配置された回路基板の対向面に形成された導電パターンからなる。その場合、回路側接点部の形成や配置が容易に行われ得る。また、回路基板のうち該回路側接点部のある部分を比較的撓み易くしておくと共に該部分の背後を別の弾性偏倚手段で弾性的に支えることにより、スイッチ本体のスイッチ接点部と回路側接点部（導電パターン）との電気的接触に際して両者の間に過大な押圧力が生じるのを避けてスイッチ本体の回転負荷を最低限に抑え得、擦れ部の磨耗や削れを最低限に抑え得る。 In the switch device of the present invention, typically, the circuit-side contact portion is formed of a conductive pattern formed on an opposing surface of a circuit board arranged in parallel to the ground plane. In that case, formation and arrangement of the circuit side contact portion can be easily performed. In addition, a part of the circuit board having the contact part on the circuit side is relatively easily bent, and the back of the part is elastically supported by another elastic biasing means, so that the switch contact part of the switch body and the circuit side When the electrical contact with the contact part (conductive pattern) occurs, excessive pressing force can be avoided between the two parts to minimize the rotation load of the switch body, and the wear and scraping of the rubbing part can be minimized. .

本発明のスイッチ装置では、典型的には、前記スイッチ本体部の前記スイッチ接点部が導電性のピンからなる。その場合、例えば、スイッチ本体の全体を金属で形成すればよいので、導通を容易に採り易い。 In the switch device of the present invention, typically, the switch contact portion of the switch main body portion is made of a conductive pin. In that case, for example, since the entire switch body may be formed of metal, it is easy to easily conduct electricity.

本発明のスイッチ装置では、典型的には、前記弾性偏倚手段が回路側接点のある部分を背後から支える別のばね部を備える。その場合、スイッチ本体の回転に対する負荷が最低限に抑えられ得ることは前述のとおりである。 In the switch device of the present invention, typically, the elastic biasing means includes another spring portion that supports a portion where the circuit side contact is located from behind. In this case, as described above, the load with respect to the rotation of the switch body can be minimized.

本発明のスイッチ装置では、典型的には、前記突出壁部が傾斜面を備える。その場合、スイッチ本体の回転に対する負荷を最低限に抑え得る。 In the switch device of the present invention, typically, the protruding wall portion includes an inclined surface. In that case, the load with respect to the rotation of the switch body can be minimized.

本発明のスイッチ装置では、典型的には、前記スイッチ本体が２４時間真と一体的に形成される。２４時間車が一回転したこと（２４時間車の回転位置）を確実に検出し得、また、２４時間車の回転方向の検出も容易に行われ得る。 In the switch device of the present invention, typically, the switch body is integrally formed with the true for 24 hours. It is possible to reliably detect that the 24-hour vehicle has made one rotation (the rotational position of the 24-hour vehicle), and it is also possible to easily detect the rotational direction of the 24-hour vehicle.

本発明のスイッチ装置では、典型的には、前記スイッチ本体の中心軸が該スイッチ本体の中心軸線の延在方向に相対変位可能に且つ相対回転不能に歯車に嵌合されている。これにより、歯車の噛合を保ったままスイッチ本体を中心軸線の延在方向に偏倚させ得る。この歯車は、例えば２４時間歯車からなる。但し、他の任意の回転伝達歯車であってもよい。 In the switch device of the present invention, typically, the center axis of the switch body is fitted to a gear so as to be relatively displaceable in the extending direction of the center axis of the switch body and not relatively rotatable. Thereby, the switch body can be biased in the extending direction of the central axis while maintaining the meshing of the gears. This gear consists of, for example, a 24-hour gear. However, any other rotation transmission gear may be used.

本発明の回転位置検出装置は、典型的には、上述のようなスイッチ装置を備える。 The rotational position detection device of the present invention typically includes the switch device as described above.

その場合、スイッチ本体が一体的に取付けられた回転体（車）の回転位置（典型的には、スイッチ本体のスイッチ接点部と回路側接点とが当接する回転位置）を検出し得る。なお、この回転位置検出装置は、回転方向の検出も容易であることは前述の通りである。 In that case, it is possible to detect the rotational position (typically, the rotational position where the switch contact portion of the switch body and the circuit side contact abut) of the rotating body (car) to which the switch body is integrally attached. As described above, the rotational position detection device can easily detect the rotational direction.

本発明の電子時計は、典型的には、上述のようなスイッチ装置や上述のようなスイッチ装置を備える。この電子時計では、例えば、スイッチ装置のスイッチ本体が２４時間車に組込まれ月末無修正機構を備えた時計が容易に形成され得、時差のある場所への移動に応じて巻真を針の進み方向又は針の戻し方向に回転させても、狂う虞れのない一種の万年時計（月末無修正機能を備えた時計）が得られる。 The electronic timepiece of the present invention typically includes the switch device as described above and the switch device as described above. In this electronic timepiece, for example, a timepiece can be easily formed with the switch body of the switch device incorporated into a 24-hour car and equipped with a month-end uncorrected mechanism, and the winding stem is advanced as the hand moves to a place with a time difference. A kind of perennial clock (a clock having an uncorrected function at the end of the month) can be obtained even if it is rotated in the direction or the return direction of the hands.

本発明の好ましい一実施の形態を添付図面に示した好ましい一実施例に基づいて説明する。 A preferred embodiment of the present invention will be described based on a preferred embodiment shown in the accompanying drawings.

図１の平面説明図には、本発明による好ましい一実施例のスイッチ装置１を備えた回転位置検出機構２を有する電子時計３が示されている。 FIG. 1 is an explanatory plan view showing an electronic timepiece 3 having a rotational position detecting mechanism 2 having a switch device 1 according to a preferred embodiment of the present invention.

電子時計３は、図２の断面説明図に示したように、地板１１と輪列受１２との間に時計輪列２０を有すると共に、各種電気・電子部品と協働して回路ブロック１３を構成する回路基板１４を有する。回路基板１４は、開口部ないし穴１４ｄを有する。 As shown in the cross-sectional explanatory view of FIG. 2, the electronic timepiece 3 has a timepiece wheel train 20 between the main plate 11 and the train wheel bridge 12, and a circuit block 13 in cooperation with various electric / electronic components. A circuit board 14 is provided. The circuit board 14 has an opening or a hole 14d.

電子時計３では、回路基板１４に実装された水晶缶１５や時計用集積回路１６の制御下で、電池１７による給電を受けて、時計用モータ１８が駆動され、モータ１８のロータ１９の回転が、時計輪列２０を介して時刻表示針（図示せず）に伝えられて時刻表示針が回転される。時計輪列２０は、ロータ１９の回転が伝達される五番車２１、該五番車２１の回転が伝達される四番車（秒車）２２、該四番車２２の回転が伝達される三番車２３、該三番車２３の回転が伝達される二番車（分車）２４、該二番車（分車）２４の回転が伝達される日の裏車２５、及び該日の裏車２５の回転が伝達される筒車（時車）２６を含む。 In the electronic timepiece 3, under the control of the crystal can 15 mounted on the circuit board 14 and the timepiece integrated circuit 16, the timepiece motor 18 is driven by the power supplied by the battery 17, and the rotor 19 of the motor 18 rotates. The time display hand is rotated by being transmitted to the time display hand (not shown) via the clock train 20. The watch wheel train 20 receives the fifth wheel 21 to which the rotation of the rotor 19 is transmitted, the fourth wheel (second wheel) 22 to which the rotation of the fifth wheel 21 is transmitted, and the rotation of the fourth wheel 22. A third wheel 23, a second wheel (minute wheel) 24 to which rotation of the third wheel 23 is transmitted, a minute wheel 25 to which rotation of the second wheel (minute wheel) 24 is transmitted, and the day An hour wheel (hour wheel) 26 to which the rotation of the back wheel 25 is transmitted is included.

筒車２６の回転は、図２に示した２４時中間車２７を介して２４時間車（２４時車）２８の歯車部すなわち２４時間歯車２８ａに伝達される。２４時間車２８の軸すなわち２４時間真２８ｂは、金属製で、回路基板１４の開口部１４ｄ内に延びている。２４時間車２８には、スイッチ装置１の金属製のスイッチ本体３０が、一体的に結合されている。 The rotation of the hour wheel 26 is transmitted to the gear portion of the 24-hour wheel (24-hour wheel) 28, that is, the 24-hour gear 28a through the 24-hour intermediate wheel 27 shown in FIG. The shaft of the 24-hour wheel 28, that is, the 24-hour true 28b is made of metal and extends into the opening 14d of the circuit board 14. A metal switch body 30 of the switch device 1 is integrally coupled to the 24-hour wheel 28.

電子時計３は、また、カレンダ用モータ８０を有する。カレンダ用モータ８０のロータ８１の回転は、日回し用輪列８２を介して日車（図示せず）に伝えられて日車が回転される。日回し用輪列８２は、ロータ８１の回転が伝達される第一日回し中間車８３、該第一日回し中間車８３の回転が伝達される第二日回し中間車８４、及び該第二日回し中間車８４と同軸に連結されて該第二日回し中間車８４と一体的に回転される第三日回し中間車８５（図２）を含む。第三日回し中間車８５の回転は、日回し車８６を介して、日車（図示せず）に伝達される。８８は押え板である。 The electronic timepiece 3 also has a calendar motor 80. The rotation of the rotor 81 of the calendar motor 80 is transmitted to the date dial (not shown) via the date turning wheel train 82 to rotate the date dial. The date turning wheel train 82 includes a first date turning intermediate wheel 83 to which the rotation of the rotor 81 is transmitted, a second date turning intermediate wheel 84 to which the rotation of the first date turning intermediate wheel 83 is transmitted, and the second turning wheel 82. It includes a third date turning intermediate wheel 85 (FIG. 2) which is connected coaxially with the date turning intermediate wheel 84 and is rotated integrally with the second date turning intermediate wheel 84. The rotation of the third date indicator driving intermediate wheel 85 is transmitted to the date indicator (not shown) via the date indicator driving wheel 86. Reference numeral 88 denotes a presser plate.

電子時計３は、更に、巻真９０を備え、該巻真９０が、Ｘ方向に一段引出された針回し位置では、例えば、三番車２３の回転が規制された状態で、巻真９０の回転がつづみ車９１及び小鉄車９２を介して日の裏車２５に伝達され、該日の裏車２５の回転に応じて、筒車（時車）２６及びスリップ式の二番車（分車）２４が回転されて、時針及び分針の針合せが行われる。 The electronic timepiece 3 further includes a winding stem 90. At the hand turning position in which the winding stem 90 is pulled out by one step in the X direction, for example, the rotation of the third wheel 23 is restricted, and The rotation is transmitted to the minute wheel 25 via the continuous wheel 91 and the small wheel 92, and according to the rotation of the minute wheel 25, the hour wheel 26 and the slip type second wheel (minute) Wheel) 24 is rotated, and the hour and minute hands are aligned.

図１及び図２に加えて図５の（ａ）及び（ｂ）からわかるように、回転位置検出装置２を構成するスイッチ装置１は、２４時間車２８と一体的なスイッチ本体３０と、地板１１の作動壁部４０と、回路側接点としての回路ブロック１３の回路基板１４の接点５０と、弾性偏倚手段としての板ばね状腕部６１，６２を備えた金属製リード端子ばね６０とを有する。回路基板１４の絶縁基板本体は、典型的には、ポリイミドからなる。但し、他の材料でできていてもよい。 As can be seen from FIGS. 5A and 5B in addition to FIGS. 1 and 2, the switch device 1 constituting the rotational position detecting device 2 includes a switch body 30 integral with the 24-hour wheel 28, a main plate, 11, the contact wall 50 of the circuit board 14 of the circuit block 13 as a circuit side contact, and a metal lead terminal spring 60 having leaf spring-like arms 61 and 62 as elastic biasing means. . The insulating substrate body of the circuit board 14 is typically made of polyimide. However, it may be made of other materials.

スイッチ本体３０は、金属製の２４時間真２８ｂに嵌着された金属製の円板３１と、該円板３１に取付けられた金属製の第一及び第二のピン３２，３３とを有する。第二のピン３３は非金属でもよいけれども、好ましくは摩擦特性等が同じになるように第一のピン３２と同一材料からなる。第一及び第二のピン３２，３３は、円板部３１の直径方向に対向する部位で且つ円板３１の回転中心軸線Ｃから等距離離れたところにおいて、円板３１に固定されている。第一のピン３２は、地板１１に対面する側に突出した地板側突出脚部３４と、回路ブロック１３に対面する側に突出した回路ブロック側突出脚部３５とを有する。第二のピン３３は、第一のピン３２よりも短く、地板１１に対面する側に突出した地板側突出脚部３６を有するけれども、回路ブロック１３に対面する側に突出した脚部は有しない。但し、第一のピン３２の回路ブロック側突出脚部３５よりも十分に短い限り、回路ブロック１３に対面する側に突出した脚部を有していてもよい。なお、第一のピン３２の地板側突出脚部３４と第二のピン３３の地板側突出脚部３６とは、実際上同じ長さだけ円板３１から突出している。 The switch body 30 includes a metal disc 31 fitted to a metal 24-hour frame 28b, and metal first and second pins 32 and 33 attached to the disc 31. The second pin 33 may be non-metallic, but is preferably made of the same material as the first pin 32 so that the frictional characteristics and the like are the same. The first and second pins 32 and 33 are fixed to the disc 31 at portions that are opposed to each other in the diameter direction of the disc portion 31 and at an equal distance from the rotation center axis C of the disc 31. The first pin 32 includes a ground plane side projecting leg portion 34 that projects to the side facing the base plate 11, and a circuit block side projecting leg portion 35 that projects to the side facing the circuit block 13. The second pin 33 is shorter than the first pin 32 and has a ground plane side projecting leg portion 36 projecting to the side facing the ground plane 11, but does not have a leg portion projecting to the side facing the circuit block 13. . However, as long as the first pin 32 is sufficiently shorter than the projecting leg 35 on the circuit block side, the leg may project to the side facing the circuit block 13. Note that the ground plane side projecting leg portion 34 of the first pin 32 and the ground plane side projecting leg portion 36 of the second pin 33 project from the disc 31 by substantially the same length.

スイッチ本体３０は、ピン３２，３３を支え得る限り、円板３１に代わりに、２４時間真２８ｂの部分２８ｄと該ピン３２，３３とを繋いで支える一対の腕部からなっていてもよい。 As long as the switch body 30 can support the pins 32 and 33, the switch body 30 may be composed of a pair of arms that support and support the portion 28 d of the 24-hour true 28 b and the pins 32 and 33 instead of the disc 31.

２４時間真２８ｂは、大径部２８ｆにおいて地板１１の軸受部１１ａにより中心軸線ＣのまわりでＣ１，Ｃ２方向に回転自在に且つ中心軸線Ｃの延在方向と平行な方向Ａ１，Ａ２に変位自在に支持されている。なお、２４時間真２８ｂは、一端部２８ｇが角柱状に形成され、該角柱状端部２８ｇが２４時間歯車２８ａの相補的形状の孔すなわち角柱状孔２８ｈに対して、Ａ１，Ａ２に相対変位可能に嵌合されている。 The 24-hour true 28b is rotatable in the directions C1 and C2 around the central axis C by the bearing portion 11a of the main plate 11 in the large-diameter portion 28f and displaceable in directions A1 and A2 parallel to the extending direction of the central axis C. It is supported by. In the 24-hour true 28b, one end 28g is formed in a prismatic shape, and the prismatic end 28g is relatively displaced to A1 and A2 with respect to a complementary hole of the 24-hour gear 28a, that is, a prismatic hole 28h. It can be fitted.

地板１１は、回路ブロック１３に対面する側の表面１１ｂに、作動壁部４０を備える。地板１１の作動壁部４０は、中心軸線Ｃに関して直径方向に対向する部位に形成された一対の突出壁部４１，４２を含む。突出壁部４１，４２は、夫々、半径方向に延びた狭い扇形の凸部４３，４４を有すると共に、各扇状凸部４３及び４４の周方向の両側に傾斜壁部４５，４６及び４７，４８を有する。凸部４３，４４の高さは、典型的には、同じで、０．１〜０．３ｍｍ程度である。但し、０．３ｍｍより高くても、０．１ｍｍより低くてもよい。 The ground plane 11 includes a working wall portion 40 on the surface 11 b facing the circuit block 13. The working wall portion 40 of the base plate 11 includes a pair of projecting wall portions 41 and 42 formed at a portion facing the diameter direction with respect to the central axis C. The protruding wall portions 41 and 42 have narrow fan-shaped convex portions 43 and 44 extending in the radial direction, and inclined wall portions 45, 46 and 47, 48 on both sides in the circumferential direction of the respective fan-shaped convex portions 43 and 44. Have The heights of the convex portions 43 and 44 are typically the same and are about 0.1 to 0.3 mm. However, it may be higher than 0.3 mm or lower than 0.1 mm.

リード端子ばね６０は、基端部６３において輪列受１２によって支持され、板ばね状腕部６１において、２４時間真２８ｂの端部２８ｅを弾性的にＡ１方向に押える。ここで、弾性偏倚手段としての板ばね状腕部６１は、２４時間真２８ｂと一体的なスイッチ本体３０を地板１１に対してＡ１方向に軽く押付ける機能を有すると共に、スイッチ本体３０の端部２８ｅとの間に常閉接点を形成し、スイッチ本体３０に常時導通している。 The lead terminal spring 60 is supported at the base end portion 63 by the train wheel bridge 12, and the leaf spring-like arm portion 61 elastically presses the end portion 28e of the true 28b for 24 hours in the A1 direction. Here, the leaf spring-like arm portion 61 as the elastic biasing means has a function of lightly pressing the switch main body 30 integrated with the 24-hour stem 28b against the main plate 11 in the A1 direction, and the end portion of the switch main body 30. A normally closed contact is formed between the switch body 30e and the switch body 30.

２４時間車２８が中心軸線Ｃのまわりで回転されると、円板３１の回転に応じて、ピン３２，３３の地板側突出脚部３４，３６の先端部３４ａ，３６ａが地板１１の表面１１ａのうち対向表面部分４９の凹凸に沿うように２４時間真２８ｂがＡ１，Ａ２方向に変位される。即ち、ピン３２，３３の地板側突出脚部３４，３６の先端部３４ａ，３６ａが、地板１１の作動壁部４０の突出壁部４１，４２に乗上げるときにはスイッチ本体３０及び２４時間真２８ｂがＡ２方向に変位され、リード端子ばね６０の板ばね状腕部６１のＡ１方向ばね力の作用下で、ピン３２，３３の地板側突出脚部３４，３６の先端部３４ａ，３６ａが壁部４１，４２から降りるときには、スイッチ本体３０及び２４時間真２８ｂがＡ１方向に変位される。地板１１の表面部分４９のうち凸部４３，４４及び両側の傾斜壁部４５，４６，４７，４８からなる突出壁部４１，４２以外の表面部分４９ａは、突出壁部４１，４２に対してＡ１方向に後退した基準を規定する基準平面になっている。なお、所望ならば、突出壁部４１，４２の凸部４３，４４よりも低い限り、基準平面部分４９ａが凹凸を有していてもよい。 When the 24-hour wheel 28 is rotated around the central axis C, the front end portions 34a and 36a of the ground plate side protruding legs 34 and 36 of the pins 32 and 33 correspond to the surface 11a of the ground plate 11 according to the rotation of the disc 31. Among them, the true 28b is displaced in the A1 and A2 directions so as to follow the unevenness of the facing surface portion 49. That is, when the tip end portions 34a, 36a of the ground plate side protruding legs 34, 36 of the pins 32, 33 ride on the protruding wall portions 41, 42 of the working wall portion 40 of the ground plate 11, the switch body 30 and the 24-hour true 28b are Under the action of the A1 direction spring force of the leaf spring-like arm portion 61 of the lead terminal spring 60, the tips 34a, 36a of the ground plate side protruding legs 34, 36 of the pins 32, 33 are displaced by the A2 direction. , 42, the switch body 30 and the 24-hour true 28b are displaced in the A1 direction. Of the surface portion 49 of the base plate 11, the surface portion 49 a other than the protruding wall portions 41, 42 including the convex portions 43, 44 and the inclined wall portions 45, 46, 47, 48 on both sides is in relation to the protruding wall portions 41, 42. It is a reference plane that defines a reference that is retracted in the A1 direction. If desired, the reference plane portion 49a may have irregularities as long as it is lower than the convex portions 43, 44 of the protruding wall portions 41, 42.

回路ブロック１３の回路基板１４は、地板１１の一方の突出壁部４１に対面する部分１４ａのうち該壁部４１に対面する表面部分１４ｂに、一対の接点パターン５１，５２からなる接点５０を有する。接点パターン５１，５２は、夫々、接点部５３，５４と、該接点部５３，５４につながるリード線部５５，５６とを含む。 The circuit board 14 of the circuit block 13 has a contact 50 composed of a pair of contact patterns 51 and 52 on a surface portion 14b facing the wall portion 41 of the portion 14a facing the one protruding wall portion 41 of the ground plane 11. . The contact patterns 51 and 52 include contact portions 53 and 54 and lead wire portions 55 and 56 connected to the contact portions 53 and 54, respectively.

なお、回路基板１４の部分１４ａのうちその背面側表面１４ｃには、リード端子ばね６０の板ばね状腕部６２がＡ１方向に押付けられている。 In addition, the leaf | plate spring-like arm part 62 of the lead terminal spring 60 is pressed by the back surface 14c of the part 14a of the circuit board 14 to A1 direction.

従って、スイッチ本体３０のピン３２，３３のうち長い方のピン３２が地板側突出脚部３４の先端部３４ａで作動壁部４０の突出壁部４１の凸部４３に乗上げてスイッチ本体３０がＡ２方向に変位され、ピン３２の回路ブロック側突出脚部３５が、Ａ２方向に変位されて、その先端３５ａにおいて、接点５０に当接され得る。 Accordingly, the longer pin 32 of the pins 32 and 33 of the switch body 30 rides on the convex portion 43 of the projecting wall portion 41 of the operating wall portion 40 at the tip end portion 34a of the base plate side projecting leg portion 34 so that the switch body 30 is Displaced in the A2 direction, the circuit block side projecting leg 35 of the pin 32 can be displaced in the A2 direction, and can be brought into contact with the contact 50 at the tip 35a.

なお、接点５０の接点パターン５１，５２は、周方向に小さい間隔Ｇ（例えば、図５の（ｂ）及び（ａ））をおいて配置されている。従って、ピン３２の突出脚部３５の先端３５ａは、図２〜図４及び図５〜図１１を参照して後で詳述するように、そのＣ１，Ｃ２方向の回転に応じて、接点パターン５１，５２のいずれにも当接しない状態Ｓ１だけでなく、接点パターン５１，５２のいずれか一方に当接する二種類の状態Ｓ２，Ｓ３と、接点パターン５１，５２の両方に当接する状態Ｓ４とを採り得る。 Note that the contact patterns 51 and 52 of the contact 50 are arranged with a small gap G (for example, (b) and (a) in FIG. 5) in the circumferential direction. Accordingly, the tip 35a of the projecting leg portion 35 of the pin 32 has a contact pattern according to its rotation in the C1 and C2 directions, as will be described in detail later with reference to FIGS. Not only the state S1 that does not contact any of 51, 52 but also two types of states S2, S3 that contact either one of the contact patterns 51, 52, and the state S4 that contacts both of the contact patterns 51, 52. Can be taken.

次に、以上の如く構成されたスイッチ装置１を備えた回転位置検出装置２の動作について、図１及び図２並びに図５に加えて、図３及び図４並びに図６〜図１１に基づいて、順に、説明する。 Next, the operation of the rotational position detection device 2 including the switch device 1 configured as described above will be described with reference to FIGS. 3, 4, and 6 to 11 in addition to FIGS. 1, 2, and 5. These will be described in order.

任意の時点において、２４時間車２８が図６に示した状態にあるとする。この状態では、ピン３２，３３のいずれも作動壁部４０の突出壁部４１，４２から離れたところ即ち基準平面部分４９ａ上に位置する。従って、リード端子ばね６０の板ばね状腕部６１によって２４時間真２８ｂの端部２８ｅでＡ１方向に押圧された２４時間車２８と一体的なスイッチ本体３０は、ピン３２，３３の地板側端部３４ａ，３６ａで地板１１の作動壁部４０の近傍の非突出表面部分である基準平面部分４９ａに押付けられる。その結果、ピン３２の回路ブロック側端部３５ａは、図２に示したように、接点５０から離れたところに位置する。以上のとおり、図６に示した状態は、ピン３２が、接点パターン５１，５２のいずれにも当接しない状態Ｓ１である。 Assume that the 24-hour wheel 28 is in the state shown in FIG. 6 at an arbitrary time. In this state, both the pins 32 and 33 are located away from the projecting wall portions 41 and 42 of the operating wall portion 40, that is, on the reference plane portion 49a. Therefore, the switch body 30 integrated with the 24-hour wheel 28 pressed in the A1 direction by the end 28e of the true spring 28b by the leaf spring-like arm portion 61 of the lead terminal spring 60 is connected to the end of the pins 32 and 33 on the ground plane side. The portions 34a and 36a are pressed against a reference plane portion 49a which is a non-projecting surface portion in the vicinity of the working wall portion 40 of the main plate 11. As a result, the circuit block side end portion 35a of the pin 32 is positioned away from the contact 50 as shown in FIG. As described above, the state illustrated in FIG. 6 is the state S1 in which the pin 32 does not contact any of the contact patterns 51 and 52.

なお、この状態Ｓ１は、ピン３２が突出壁部４１の傾斜壁部４５に近接した図６の位置Ｐ１２にある場合だけでなく、ピン３２が、当該位置Ｐ１２と、当該図６において想像線３２ｉで示したように突出壁部４２の傾斜壁部４５に近接した位置Ｐ１１との間にある全ての場合に同様に該当する。 This state S1 is not only when the pin 32 is at the position P12 in FIG. 6 close to the inclined wall portion 45 of the protruding wall portion 41, but also when the pin 32 is at the position P12 and the imaginary line 32i in FIG. The same applies to all cases between the projecting wall portion 42 and the position P11 close to the inclined wall portion 45.

２４時間車２８が、図６に示した状態Ｓ１からＣ１方向に回転されると、該２４時間車２８の回転に伴って、図７に示したように、ピン３２が基準平面部分４９ａから突出壁部４１の傾斜壁部４５に徐々に乗上げ、ピン３３が基準平面部分４９ａから突出壁部４２の傾斜壁部４６に徐々に乗上げる。その結果、ピン３２，３３がリード端子ばね６０の板ばね状腕部６１のばね力に抗して徐々にＡ２方向に変位される。但し、ピン３２，３３の地板側端部３４ａ，３６ａが突出壁部４１，４２の傾斜壁部４５，４６に途中まで乗り上げた状態では、ピン３２の回路ブロック側端部３５ａは接点５０に接触せず、状態Ｓ１に保たれる。 When the 24-hour wheel 28 is rotated in the direction C1 from the state S1 shown in FIG. 6, as shown in FIG. 7, the pin 32 protrudes from the reference plane portion 49a as the 24-hour wheel 28 rotates. The pin 33 gradually climbs onto the inclined wall portion 45 of the projecting wall portion 42 from the reference plane portion 49a. As a result, the pins 32 and 33 are gradually displaced in the A2 direction against the spring force of the leaf spring-like arm portion 61 of the lead terminal spring 60. However, when the ground plane side end portions 34 a and 36 a of the pins 32 and 33 run on the inclined wall portions 45 and 46 of the projecting wall portions 41 and 42, the circuit block side end portion 35 a of the pin 32 contacts the contact 50. Without being kept in the state S1.

なお、ピン３２，３３が突出壁部４１，４２の傾斜壁部４５，４６を完全に乗上げる前に、ピン３２と接点５０との接触が開始される。この接触が開始されるタイミングは、適宜選択される。従って、図７に示した程度に乗上げが進んだ段階で、ピン３２と接点５０との接触が開始されるようになっていてもよい。 Note that the contact between the pin 32 and the contact 50 is started before the pins 32 and 33 completely ride on the inclined wall portions 45 and 46 of the protruding wall portions 41 and 42. The timing at which this contact is started is appropriately selected. Therefore, the contact between the pin 32 and the contact 50 may be started when the ride has advanced to the extent shown in FIG.

２４時間車２８が、図７に示した状態Ｓ１から更にＣ１方向に回転されると、該２４時間車２８の回転に伴って、図８に示したように、ピン３２が突出壁部４１の傾斜壁部４５を完全に登りきって凸部４３に達し、ピン３３が突出壁部４２の傾斜壁部４６を完全に登りきって凸部４４に達する。その結果、ピン３２，３３がリード端子ばね６０の板ばね状腕部６１のばね力に抗して最大限にＡ２方向に変位され、ピン３２は、回路ブロック側端部３５ａで接点５０の対応する接点パターン５１の接点部５３に当接する。その結果、２４時間真２８ｂの軸部３２と接点パターン５１との導通が確保される状態Ｓ２になる。従って、スイッチ装置１の接点パターン５１のリード線部５５とリード端子ばね６０との間における導通により、スイッチ装置１がＯＮになったことをチェックし得る。これを回転位置検出装置２についていえば、スイッチ装置１の接点パターン５１のリード線部５５とリード端子ばね６０との間における導通により、スイッチ装置１がＯＮになった位置をスイッチ本体３０の特定の回転位置、換言すれば、２４時間真２８ｂないし２４時間車２８の特定の回転位置を検出し得る。この特定の検出位置は、例えば、日付変更位置であってもそれに関連する特定動作の始動位置であっても他の位置であってもよい。 When the 24-hour wheel 28 is further rotated in the direction C1 from the state S1 shown in FIG. 7, as the 24-hour wheel 28 rotates, as shown in FIG. The inclined wall portion 45 is fully climbed to reach the convex portion 43, and the pin 33 completely climbs the inclined wall portion 46 of the protruding wall portion 42 to reach the convex portion 44. As a result, the pins 32 and 33 are displaced to the maximum in the A2 direction against the spring force of the leaf spring-like arm portion 61 of the lead terminal spring 60, and the pin 32 corresponds to the contact 50 at the circuit block side end portion 35a. The contact portion 53 of the contact pattern 51 to be contacted. As a result, a state S2 is established in which conduction between the shaft portion 32 and the contact pattern 51 of the true 28b for 24 hours is ensured. Therefore, it can be checked that the switch device 1 is turned on by conduction between the lead wire portion 55 of the contact pattern 51 of the switch device 1 and the lead terminal spring 60. With respect to the rotational position detection device 2, the position where the switch device 1 is turned on by the conduction between the lead wire portion 55 of the contact pattern 51 of the switch device 1 and the lead terminal spring 60 is specified in the switch body 30. In other words, the specific rotational position of the 24-hour true 28b to the 24-hour vehicle 28 can be detected. The specific detection position may be, for example, a date change position, a start position of a specific operation related thereto, or another position.

２４時間車２８が、図８に示した状態Ｓ２から更にＣ１方向に回転されると、該２４時間車２８の回転に伴って、図５の（ａ）に示したように、ピン３２，３３の地板側端部３４ａ，３６ａが対応する突出壁部４１，４２の凸部４３，４４の周方向の中央部に達し、ピン３２の回路ブロック側端部３５ａが接点５０の接点パターン５１，５２の接点部５３，５４の両方に接触するようになる状態Ｓ４に達する。即ち、ピン３２の回路ブロック側端部３５ａが接点パターン５１から離れる前に接点パターン５２の接点部５４に接触するようになって、状態Ｓ４になる。スイッチ装置１や回転位置検出装置２において、この状態Ｓ４になる位置を別の特定位置として設定し得る。 When the 24-hour wheel 28 is further rotated in the direction C1 from the state S2 shown in FIG. 8, as shown in FIG. 5A, the pins 32, 33 are rotated along with the rotation of the 24-hour wheel 28. The base plate side end portions 34a, 36a of the projecting wall portions 41, 42 reach the center portions of the projecting portions 43, 44 in the circumferential direction, and the circuit block side end portions 35a of the pins 32 are contact pattern 51, 52 of the contact 50. The state S4 in which both of the contact parts 53 and 54 come into contact is reached. That is, the circuit block side end portion 35a of the pin 32 comes into contact with the contact portion 54 of the contact pattern 52 before leaving the contact pattern 51, and the state S4 is entered. In the switch device 1 and the rotational position detection device 2, the position where the state S4 is set can be set as another specific position.

２４時間車２８が、図５の（ａ）に示した状態Ｓ４から更にＣ１方向に回転されると、該２４時間車２８の回転に伴って、図９に示したように、ピン３２，３３の地板側端部３４ａ，３６ａが対応する突出壁部４１，４２の凸部４３，４４の周方向の端部近傍に達し、ピン３２の回路ブロック側端部３５ａが接点５０の接点パターン５１から離れて、接点パターン５２の接点部５４だけに接触する状態Ｓ３になる。スイッチ装置１や回転位置検出装置２において、この状態Ｓ３になる位置を更に別の特定位置として設定し得る。 When the 24-hour wheel 28 is further rotated in the direction C1 from the state S4 shown in FIG. 5A, the pins 32 and 33 are rotated as shown in FIG. The base plate side end portions 34a, 36a of the projecting wall portions 41, 42 reach the vicinity of the end portions in the circumferential direction of the projecting portions 43, 44, and the circuit block side end portion 35a of the pin 32 extends from the contact pattern 51 of the contact 50. It will be in the state S3 which contacts only the contact part 54 of the contact pattern 52 apart. In the switch device 1 and the rotational position detection device 2, the position where the state S3 is set can be set as another specific position.

以上において、図８、図５の（ａ）及び図９の状態Ｓ２，Ｓ４，Ｓ３は、断面図でみると、図３の状態に対応する。 In the above, the states S2, S4, and S3 in FIGS. 8 and 5A and 9 correspond to the states in FIG.

２４時間車２８が、図９に示した状態Ｓ１から更にＣ１方向に回転されると、該２４時間車２８の回転に伴って、図１０に示したように、ピン３２，３３の地板側端部３４ａ，３６ａが対応する突出壁部４１，４２の凸部４３，４４の周方向の端部を越えて傾斜壁部４７，４８に達し、ピン３２が突出壁部４１の傾斜壁部４７を徐々に下り、ピン３３が突出壁部４２の傾斜壁部４８に徐々に下る。その結果、ピン３２，３３がリード端子ばね６０の板ばね状腕部６１のばね力によって徐々にＡ１方向に変位される。従って、ピン３２の回路ブロック側端部３５ａと接点５０との全ての接触が解除されて、状態Ｓ１に戻る。 When the 24-hour wheel 28 is further rotated in the direction C1 from the state S1 shown in FIG. 9, as shown in FIG. 10, as shown in FIG. The portions 34 a, 36 a reach the inclined wall portions 47, 48 beyond the circumferential ends of the convex portions 43, 44 of the corresponding protruding wall portions 41, 42, and the pin 32 moves the inclined wall portion 47 of the protruding wall portion 41. The pin 33 gradually descends and the pin 33 gradually descends to the inclined wall portion 48 of the protruding wall portion 42. As a result, the pins 32 and 33 are gradually displaced in the A1 direction by the spring force of the leaf spring-like arm portion 61 of the lead terminal spring 60. Accordingly, all contact between the circuit block side end portion 35a of the pin 32 and the contact 50 is released, and the state returns to the state S1.

なお、この図１０に示した位置では、ピン３２の回路ブロック側端部３５ａと接点５０の接点パターン５２の接点部５４との電気的接触が残っているとしてもよいことは、図７に関連して前に説明したとおりである。 It should be noted that the electrical contact between the circuit block side end portion 35a of the pin 32 and the contact portion 54 of the contact pattern 52 of the contact 50 may remain at the position shown in FIG. As described above.

２４時間車２８が、図１０に示した状態から更にＣ１方向に回転されると、該２４時間車２８の回転に伴って、図１１に示したように、ピン３２，３３が突出壁部４１，４２の傾斜壁部４７，４８から完全に下って、基準平面部分４９ａに下りる。この間、状態Ｓ１に保たれる。 When the 24-hour wheel 28 is further rotated in the C1 direction from the state shown in FIG. 10, as shown in FIG. , 42 completely descends from the inclined wall portions 47, 48 and descends to the reference plane portion 49a. During this time, the state S1 is maintained.

この状態は、２４時間車２８のＣ１方向回転に伴って、図６に示した状態に達するまで、より詳しくは、図７の状態を越えて図８の状態に達するまで続く。 This state continues until the state shown in FIG. 6 is reached as the 24-hour wheel 28 rotates in the C1 direction, more specifically, until the state shown in FIG. 8 is reached beyond the state shown in FIG.

なお、図１１の状態を過ぎた後、ピン３２が基準平面部分４９ａから突出壁部４２に乗上げ、ピン３３が基準平面部分４９ａから突出壁部４１に乗上げると、２４時間車２８と一体的なスイッチ本体３０がＡ２方向に変位されるけれども、接点５０に対面する位置にあるピン３３は短く該接点５０側に突出した部分を備えていないので、図４に示した断面説明図からわかる通り、ピン３３と接点５０との接触は生じない。従って、図１１に示す状態から図６に示す状態までの間でにおいては、状態Ｓ１に保たれる。 After passing the state of FIG. 11, when the pin 32 rides on the protruding wall portion 42 from the reference plane portion 49a and the pin 33 rides on the protruding wall portion 41 from the reference plane portion 49a, it is integrated with the 24-hour vehicle 28. Although the typical switch body 30 is displaced in the A2 direction, the pin 33 at the position facing the contact 50 is short and does not have a portion protruding toward the contact 50, so that it can be seen from the cross-sectional explanatory view shown in FIG. As a result, the contact between the pin 33 and the contact 50 does not occur. Therefore, the state S1 is maintained from the state shown in FIG. 11 to the state shown in FIG.

以上のとおり、２４時間車２８のＣ１回転に伴って、状態Ｓ１にあったスイッチ装置１が、図８、図５の（ａ）、図９に示す通り、順に、状態Ｓ２，Ｓ４，Ｓ３を採った後、状態Ｓ１に戻る。 As described above, with the C1 rotation of the 24-hour wheel 28, the switch device 1 in the state S1 changes the states S2, S4, and S3 in order as shown in FIGS. 8, 5A, and 9, respectively. After picking, it returns to state S1.

従って、スイッチ装置１が、状態Ｓ２，Ｓ４，Ｓ３のいずれかの状態を採る時点を基準位置として、回転位置を信号を発することにより、２４時間車２８の一回転ないし一日の時間の経過を知らせ得る。また、状態Ｓ２から状態Ｓ４への変化、又は状態Ｓ４から状態Ｓ３への変化を検出することにより、２４時間車がＣ１方向に回転していることを検出し得る。 Accordingly, the switch device 1 generates a signal of the rotational position with the time point when any one of the states S2, S4, S3 is taken as a reference position, so that one rotation of the 24-hour wheel 28 or the passage of time of one day can be obtained. You can let me know. Further, by detecting a change from the state S2 to the state S4 or a change from the state S4 to the state S3, it can be detected that the 24-hour vehicle is rotating in the C1 direction.

換言すれば、巻真９０を引出位置において回して時針や分針の表示位置を変える場合、巻真９０の回転により時針や分針が通常運針時とは逆向きに回転され２４時間車がＣ２方向に回転されるとすると、スイッチ装置１のスイッチ本体３０がＣ２方向に回転されるので、スイッチ装置１が、順に、状態Ｓ３，Ｓ４，Ｓ２を採る。スイッチ装置１の状態Ｓ３から状態Ｓ４への変化、又は状態Ｓ４から状態Ｓ２への変化を検出することにより、２４時間車がＣ２方向に回転していることを検出し得る。 In other words, when changing the display position of the hour hand and minute hand by turning the winding stem 90 at the withdrawal position, the hour hand and minute hand are rotated in the opposite direction to the normal hand movement by the rotation of the winding stem 90, and the 24-hour wheel is moved in the direction C2. If it is rotated, the switch body 30 of the switch device 1 is rotated in the C2 direction, so that the switch device 1 sequentially takes states S3, S4, and S2. By detecting the change of the switch device 1 from the state S3 to the state S4 or the change from the state S4 to the state S2, it can be detected that the 24-hour vehicle is rotating in the C2 direction.

ここで、スイッチ装置１では、本体３０のＡ１，Ａ２方向移動を行わせるようにしているので、スイッチ装置１のスイッチ本体３０のピン３２，３３と地板１１の作動壁部４０及び接点５０の接点パターン５１，５２の接点部５３，５４との相対的な位置関係や相対的な形状は、スイッチ本体３０の回転方向Ｃ１，Ｃ２に依存することなく実際上同一である。 Here, in the switch device 1, since the main body 30 is moved in the A1 and A2 directions, the pins 32 and 33 of the switch main body 30 of the switch device 1, the working wall portion 40 of the base plate 11, and the contacts of the contacts 50 are used. The relative positional relationship and the relative shape of the patterns 51 and 52 with the contact portions 53 and 54 are practically the same without depending on the rotation directions C1 and C2 of the switch body 30.

このようにして、スイッチ装置１により２４時間車２８の回転方向の検出が可能になるのは、接点５０の接点パターン５１，５２の接点部５３，５４間の間隙Ｇよりもピン３２の端部３５ａが大きく、接点部５３，５４の両方に同時に接触する状態Ｓ４を採り得ることによる。なお、接点部５３，５４間の間隙Ｇをピン３２の端部３５ａよりも小さくして、ピン３２の端部３５ａが接点部５３，５４間の回路基板１４の部分に直接接触するのを避けることは、接点部５３，５４の削れ等を最低限に抑えるのに役立つ。 In this way, the rotation direction of the 24-hour wheel 28 can be detected by the switch device 1 because the end portion of the pin 32 is more than the gap G between the contact portions 53 and 54 of the contact patterns 51 and 52 of the contact 50. This is because the state 35a is large and the state S4 in which both the contact portions 53 and 54 are in contact at the same time can be adopted. Note that the gap G between the contact portions 53 and 54 is made smaller than the end portion 35a of the pin 32, so that the end portion 35a of the pin 32 is prevented from directly contacting the portion of the circuit board 14 between the contact portions 53 and 54. This is useful for minimizing scraping of the contact portions 53 and 54.

以上において、リード端子ばね６０の板ばね状腕部６２が、回路基板１４のうち基板部分１４ａを背後から常時Ａ１方向に押して、接点５０の接点部５３，５４がＡ２方向に逃げるのを避け、接点５０とピン３２との電気的接触を確実にしている。 In the above, it is avoided that the leaf spring-like arm portion 62 of the lead terminal spring 60 always pushes the board portion 14a of the circuit board 14 from the back in the A1 direction, and the contact portions 53 and 54 of the contact 50 escape in the A2 direction. The electrical contact between the contact 50 and the pin 32 is ensured.

なお、このスイッチ装置１では、リード端子ばね６０の板ばね状腕部６１のＡ１方向押圧力の作用下で、スイッチ装置１の本体３０のピン３２，３３の地板側端部３４ａ，３６ａが地板１１の作動壁部４０に常時押し付けられた状態で回転するけれども、電気的接点ではないので、摺動を優先させるような材料や形状を採り得、削れや磨耗が最低限に抑えられ得る。 In this switch device 1, the ground plane side end portions 34 a and 36 a of the pins 32 and 33 of the body 30 of the switch device 1 are grounded under the action of the A1 direction pressing force of the leaf spring-like arm portion 61 of the lead terminal spring 60. 11 is always pressed against the working wall 40, but it is not an electrical contact. Therefore, it is possible to adopt a material or shape that prioritizes sliding, and scraping and wear can be minimized.

また、スイッチ装置１において、スイッチ本体３０がピン３２だけではなくてピン３３を備えるので、スイッチ本体３０に加えられる外力のバランスが保たれ得るから、２４時間真２８ｂが確実にＡ２，Ａ１方向に変位され得る。ピン３２，３３が、円板状部３１によって２４時間真２８ｂに接続される代わりに、直径方向に延びた腕部によって２４時間真２８ｂに接続されていてもよい。また、ピン３２のＡ１，Ａ２方向変位を確実に行わせるために、ピン３２と共に１８０度間隔になるような一つの余分のピン３３を用いる代わりに、ピン３２と共に１２０度間隔になるような二つの余分のピン（ピン３３と同様なピン）を備えていてもよい。ピンが二本からなる場合でも、ピン３２，３３が中心軸線Ｃから等距離にある代わりに、一方が他方よりも遠くにあってもよい。 Further, in the switch device 1, since the switch body 30 includes not only the pin 32 but also the pin 33, the balance of the external force applied to the switch body 30 can be maintained, so the 24-hour true 28b is reliably in the A2 and A1 directions. Can be displaced. Instead of being connected to the 24-hour true 28b by the disc-shaped portion 31, the pins 32 and 33 may be connected to the 24-hour true 28b by an arm portion extending in the diameter direction. Also, in order to ensure the displacement of the pins 32 in the A1 and A2 directions, instead of using one extra pin 33 that is spaced 180 degrees with the pin 32, two pins that are spaced 120 degrees with the pin 32 are used. Two extra pins (similar to the pins 33) may be provided. Even in the case of two pins, instead of the pins 32 and 33 being equidistant from the central axis C, one may be farther than the other.

なお、所望ならば、接点パターン５１，５２の間隔がピン３２の突出脚部３５の先端３５ａの大きさよりも大きくてもよく、その場合、ピン３２の突出脚部３５の先端３５ａが接点パターン５１，５２の両方に当接する状態Ｓ４は生じない。 If desired, the distance between the contact patterns 51 and 52 may be larger than the size of the tip 35a of the protruding leg 35 of the pin 32. In this case, the tip 35a of the protruding leg 35 of the pin 32 is the contact pattern 51. , 52 does not occur.

その場合、ピン３２と接点パターン５１，５２との当接状態の変化からは、２４時間車２８の回転方向は、わからないので、例えば、分針を一回転させるために一回以上回転される巻真９０の中間部のところに、該巻真９０が所定角度回転されるごとに回転信号Ｓｍ（図示せず）を発する回転検出機構９３を設けておき、ピン３２が接点パターン５１に接触してから別の接点パターン５２に接触するまでに発生される回転信号Ｓｍの数から、回転方向を決定すればよい。 In that case, since the rotation direction of the 24-hour wheel 28 is not known from the change in the contact state between the pin 32 and the contact patterns 51, 52, for example, the winding stem rotated one or more times to rotate the minute hand once. A rotation detecting mechanism 93 that generates a rotation signal Sm (not shown) every time the winding stem 90 is rotated by a predetermined angle is provided at an intermediate portion of 90, and after the pin 32 contacts the contact pattern 51. The rotation direction may be determined from the number of rotation signals Sm generated until the contact pattern 52 contacts another contact pattern 52.

本発明による好ましい一実施例のスイッチ装置を備えた回転位置検出装置を有する電子時計の平面説明図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory plan view of an electronic timepiece having a rotational position detection device including a switch device according to a preferred embodiment of the present invention. 図１の電子時計において電気的接触がない典型的な回転状態の断面説明図。Sectional explanatory drawing of the typical rotation state in which there is no electrical contact in the electronic timepiece of FIG. 図１の電子時計において、電気的接触が達成された回転状態の断面説明図。FIG. 2 is a cross-sectional explanatory view of a rotating state in which electrical contact is achieved in the electronic timepiece of FIG. 1. 図１の電子時計において電気的接触がない別の回転状態の断面説明図。Sectional explanatory drawing of another rotation state in which there is no electrical contact in the electronic timepiece of FIG. 図１の電子時計において、スイッチ本体のピンと接点の二つの接点部とが同時に接触した状態を示したもので、（ａ）は図６〜図１１と同様な平面説明図、（ｂ）は断面説明図。In the electronic timepiece of FIG. 1, the pin of the switch body and the two contact portions of the contact are in contact with each other at the same time, (a) is an explanatory plan view similar to FIGS. Illustration. 図１の電子時計において、電気的接触がない回転状態の平面説明図。The top explanatory drawing of the rotation state which does not have an electrical contact in the electronic timepiece of FIG. 図１の電子時計において、図６の状態に対してスイッチ本体が少し回転した状態を示した平面説明図。FIG. 7 is an explanatory plan view showing a state in which the switch body is slightly rotated with respect to the state of FIG. 6 in the electronic timepiece of FIG. 1. 図１の電子時計において、ピンが一方の接点部と電気的に接触した状態を示す平面説明図。FIG. 2 is an explanatory plan view showing a state where a pin is in electrical contact with one contact portion in the electronic timepiece of FIG. 1. 図１の電子時計において、ピンが他方の接点部と電気的に接触した状態を示す平面説明図。FIG. 3 is an explanatory plan view showing a state in which the pin is in electrical contact with the other contact portion in the electronic timepiece of FIG. 1. 図１の電子時計において、図９の状態に対してスイッチ本体が少し回転した状態（この例では、ピンと他方の接点部との電気的接触が断たれた状態）を示した平面説明図。FIG. 10 is an explanatory plan view showing a state in which the switch main body is slightly rotated with respect to the state of FIG. 9 in the electronic timepiece of FIG. 1 (in this example, a state in which electrical contact between the pin and the other contact portion is broken); 図１の電子時計において、図１０の状態に対してスイッチ本体が少し回転した状態であって電気的接触がない回転状態の平面説明図。FIG. 11 is an explanatory plan view of the electronic timepiece of FIG. 1 in a rotating state in which the switch body is slightly rotated with respect to the state of FIG. 10 and there is no electrical contact.

符号の説明Explanation of symbols

１スイッチ装置
２回転位置検出機構
３電子時計
１１地板
１１ａ軸受部
１１ｂ表面
１２輪列受
１３回路ブロック
１４回路基板
１４ａ地板の突出壁部に対面する基板部分
１４ｂ地板の突出壁部に対面する基板の表面部分
１５水晶缶
１６時計用集積回路
１７電池
１８時計用モータ
１９ロータ
２０時計輪列
２１五番車
２２四番車（秒車）
２３三番車
２４二番車（分車）
２５日の裏車
２６筒車（時車）
２７２４時中間車
２８２４時間車
２８ａ２４時間歯車
２８ｂ２４時間真
２８ｄ真部分
２８ｅ端
２８ｆ大径部
２８ｇ端部
３０スイッチ本体
３１円板
３２，３３ピン
３４，３６地板側突出脚部
３４ａ，３６ａ端部
３５回路ブロック側突出脚部
３５ａ端部
４０作動壁部
４１，４２突出壁部
４３，４４扇状凸部
４５，４６，４７，４８傾斜壁部
４９対向表面部分
４９ａ基準表面部分
５０接点
５１，５２接点パターン
５３，５４接点部
５５，５６リード線部
６０リード端子ばね
６１，６２板ばね状腕部
８０カレンダ用モータ
８１ロータ
８２日回し用輪列
８３，８４，８５日回し中間車
８６日回し車
８８押え板
９０巻真
９１つづみ車
９２小鉄車
Ａ１，Ａ２方向
Ｃ中心軸線
Ｃ１，Ｃ２回転方向 DESCRIPTION OF SYMBOLS 1 Switch apparatus 2 Rotation position detection mechanism 3 Electronic timepiece 11 Ground plate 11a Bearing part 11b Surface 12 Train wheel bridge 13 Circuit block 14 Circuit board 14a Substrate part 14b facing the protruding wall part of the ground plate Surface portion 15 Crystal can 16 Clock integrated circuit 17 Battery 18 Clock motor 19 Rotor 20 Clock train wheel 21 Fifth wheel 22 Fourth wheel (second wheel)
23 Third wheel 24 Second wheel (minute drive)
25 car behind the day 26 hour wheel
27 24-hour intermediate wheel 28 24-hour wheel 28a 24-hour gear wheel 28b 24-hour gear 28b true portion 28e end 28f large diameter portion 28g end portion 30 switch body 31 disc 32, 33 pin 34, 36 main plate side projecting leg 34a, 36a End 35 Circuit block side protruding leg 35a End 40 Actuating wall 41, 42 Projecting wall 43, 44 Fan-shaped convex 45, 46, 47, 48 Inclined wall 49 Opposing surface 49a Reference surface 50 Contact 51 52 Contact pattern 53, 54 Contact part 55, 56 Lead wire part 60 Lead terminal spring 61, 62 Leaf spring arm part 80 Calendar motor 81 Rotor 82 Date turning wheel train 83, 84, 85 Day turning intermediate wheel 86 Day turning Car 88 Presser plate 90 Winding stem 91 Claw wheel 92 Small iron wheel A1, A2 direction C Center axis C1, C2 Rotation direction

Claims

地板に対して垂直な回転中心軸線のまわりで回転可能で且つ前記回転中心軸線の延在方向に前記地板に対して移動可能なスイッチ本体であって、前記回転中心軸線に対して径方向に離れた部位において前記地板に向かって突出した複数の脚部、及び前記複数の脚部のうち一つの脚部の前記地板とは反対側の端部において前記地板とは反対向きに突出したスイッチ接点部を備えたものと、
前記スイッチ本体の複数の脚部の地板側端部が前記地板の対向表面に当接するように、前記スイッチ本体に対して地板方向の弾性力を与えるばね部を備えた弾性偏倚手段と、
前記スイッチ本体が回転された際に、前記スイッチ本体を前記地板の延在面に対して垂直な向きに変位させるべく前記地板の表面に形成された突出壁部を含む作動壁部と、
前記スイッチ本体の回転の際に前記スイッチ本体が前記作動壁部の前記突出壁部によって前記地板の延在面に垂直な向きに変位された際に、前記スイッチ本体の前記スイッチ接点部と当接するように前記地板に対して対向配置された回路側接点と
を有するスイッチ装置。 A switch body movable relative to said base plate in the extending direction of and the rotational center axis rotatable about a vertical rotational center axis relative to the base plate, spaced radially relative to the central axis of rotation a plurality of leg portions protruding toward the base plate at the site was, and the base plate and the switch contact portion protruding in the opposite direction to the said base plate at the opposite end of one leg of the plurality of legs With
As main plate side ends of the plurality of legs of the switch body is brought into contact with opposite surfaces of said base plate, and an elastic biasing means having a spring portion to provide a resilient force of the earth plate direction relative to the switch body,
Said when the switch body is rotated, the operation wall portion including the projecting wall portion formed on a surface of the base plate to be displaced in a direction perpendicular to the switch body to an extending surface of said base plate,
When the switch body upon rotation of the switch body is displaced in a direction perpendicular to the extending surface of the base plate by the projecting wall portion of the actuating wall, into contact with the switch contact portion of the switch body Thus, the switch apparatus which has the circuit side contact arrange | positioned facing the said ground plane.

前記回路側接点は、前記スイッチ本体が回転される際に前記スイッチ本体の前記スイッチ接点部が移動する円に沿って配置された二つの回路側接点部を有する請求項１に記載のスイッチ装置。 The circuit-side contact, the switching device according to claim 1 having the switch body has two circuit-side contact portion to which the switch contact portion is disposed along a circle that movement of the switch body when it is rotated.

前記二つの回路側接点部の間の間隔が前記スイッチ本体の前記スイッチ接点部の大きさよりも小さい請求項２に記載のスイッチ装置。 The two circuit-side contact portion switching device according to a small claim 2 than distance the size of the switch contact portion of the switch body between.

前記回路側接点部は、前記地板に平行に配置された回路基板の対向面に形成された導電パターンからなる請求項２又は３に記載のスイッチ装置。 The circuit-side contact portion, the switch device according to claim 2 or 3 made of a conductive pattern formed on the opposite surface of the circuit board arranged parallel to the base plate.

前記スイッチ本体部の前記スイッチ接点部が導電性のピンからなる請求項１から４までのいずれか一つの項に記載のスイッチ装置。 The switch device according to any one of claims 1 to 4, wherein the switch contact portion of the switch main body portion is formed of a conductive pin.

前記弾性偏倚手段が前記回路側接点のある部分を背後から支える別のばね部を備える請求項１から５までのいずれか一つの項に記載のスイッチ装置。 Switching device according to any one of claims 1, wherein said resilient biasing means comprises a separate spring part supporting from behind the part of the said circuit-side contact to 5.

前記突出壁部が傾斜面を備える請求項１から６までのいずれか一つの項に記載のスイッチ装置。 The switch device according to any one of claims 1 to 6, wherein the protruding wall portion includes an inclined surface.

前記スイッチ本体が２４時間真と一体的に形成されている請求項１から７までのいずれか一つの項に記載のスイッチ装置。 The switch device according to any one of claims 1 to 7, wherein the switch body is formed integrally with the true for 24 hours.

前記スイッチ本体の中心軸が前記スイッチ本体の前記回転中心軸線の延在方向に相対変位可能に且つ相対回転不能に歯車に嵌合されている請求項１から８までのいずれか一つの項に記載のスイッチ装置。 According to any one of claims 1 to central axis of the switch body is fitted to the rotation center axis extending direction of the relative displacement in and incapable of relative rotation gear of said switch body to 8 Switch device.

請求項１から９までのいずれか一つの項に記載のスイッチ装置を備えた回転位置検出装置。 A rotational position detection device comprising the switch device according to any one of claims 1 to 9.

請求項１０に記載の回転位置検出装置を備えた電子時計。 An electronic timepiece comprising the rotational position detection device according to claim 10.