JP2010230693A5

JP2010230693A5 -

Info

Publication number: JP2010230693A5
Application number: JP2010161252A
Authority: JP
Filing date: 2010-07-16
Publication date: 2010-11-25
Anticipated expiration: 2027-09-28

Claims

基準位置に設けられた基準孔と当該基準孔の両側に異なる長さの第１、第２の各遮光部を隔てた位置に設けられた第１、第２の各長孔とからなる第１光透過孔部を備えている秒針車と、
第２光透過孔部を備えている分針車と、
第３光透過孔部を備えている時針車と、
前記秒針車、前記分針車および前記時針車を同一軸上に回転可能に支持する駆動軸と、
前記秒針車を１ステップずつ回転させるモータと、
このモータの２ステップ分の回転の都度、前記第１〜第３の各光透過孔部を光が透過したか否かを光検出する光検出手段と、
前記モータの２ステップ分の回転により前記秒針車を回転させ、前記光検出手段による光検出がない未検出状態の連続回数が予め定められた回数になったことが検出され、かつ、その検出の後、前記モータの２ステップ分の回転により前記秒針車が２ステップ分回転された際に、前記基準孔が前記光検出手段により光検出がなされた場合、当該光検出がなされた位置を、前記秒針車の基準位置と判断する秒針基準位置判断手段と、
を備えていることを特徴とする針位置検出装置。 A first hole comprising a reference hole provided at a reference position and first and second elongated holes provided at positions on the both sides of the reference hole with different lengths of the first and second light shielding portions . A second hand wheel having a light transmission hole,
A minute hand wheel provided with a second light transmission hole,
An hour hand wheel having a third light transmission hole;
A drive shaft that rotatably supports the second hand wheel, the minute hand wheel, and the hour hand wheel on the same axis;
A motor for rotating the second hand wheel one step at a time;
A light detection means for detecting whether or not light has passed through each of the first to third light transmission holes each time the motor is rotated by two steps ;
The second hand wheel is rotated by two steps of rotation of the motor , and it is detected that the number of consecutive undetected states in which no light is detected by the light detection means has reached a predetermined number , and the detection After that, when the second hand wheel is rotated by two steps by the rotation of the motor by two steps, when the reference hole is detected by the light detection means, the position where the light detection is made is Second hand reference position determination means for determining the reference position of the second hand wheel;
A needle position detecting device comprising:

前記秒針基準位置判断手段により判断された前記秒針車の基準位置に従って、前記秒針車、前記分針車および前記時針車に対応する秒針、分針および時針を現在時刻に対応する位置まで運針させる運針制御手段を更に備えていることを特徴とする請求項１に記載の針位置検出装置。 According to the second hand wheel reference position determined by the second hand reference position determining means, the second hand wheel, the minute hand and the hour hand corresponding to the second hand wheel, the minute hand wheel and the hour hand wheel are moved to the position corresponding to the current time. The needle position detecting device according to claim 1, further comprising:

基準位置に設けられた基準孔と当該基準孔の両側に異なる長さの第１、第２の各遮光部を隔てた位置に設けられた第１、第２の各長孔とからなる第１光透過孔部を備えている秒針車と、第２光透過孔部を備えている分針車と、第３光透過孔部を備えている時針車と、前記秒針車、前記分針車および前記時針車を同一軸上に回転可能に支持する駆動軸と、前記秒針車を１ステップずつ回転させるモータとを備えている針位置検出装置に用いられる針位置検出方法において、A first hole comprising a reference hole provided at a reference position and first and second oblong holes provided at positions separating the first and second light shielding portions of different lengths on both sides of the reference hole. Second hand wheel provided with light transmission hole part, minute hand wheel provided with second light transmission hole part, hour hand wheel provided with third light transmission hole part, second hand wheel, minute hand wheel and hour hand In a hand position detection method used for a hand position detection device comprising a drive shaft that rotatably supports a car on the same shaft and a motor that rotates the second hand wheel step by step,
前記モータの２ステップ分の回転の都度、前記第１〜第３の各光透過孔部を光が透過したか否かを光検出する光検出ステップと、A light detection step of detecting whether or not light has passed through each of the first to third light transmission holes each time the motor rotates for two steps;
前記モータの２ステップ分の回転により前記秒針車を回転させ、前記光検出手段による光検出がない未検出状態の連続回数が予め定められた回数になったことが検出され、かつ、その検出の後、前記モータの２ステップ分の回転により前記秒針車が２ステップ分回転された際に、前記基準孔が前記光検出手段により光検出がなされた場合、当該光検出がなされた位置を、前記秒針車の基準位置と判断する秒針基準位置判断ステップと、The second hand wheel is rotated by two steps of rotation of the motor, and it is detected that the number of consecutive undetected states in which no light is detected by the light detection means has reached a predetermined number, and the detection After that, when the second hand wheel is rotated by two steps by the rotation of the motor by two steps, when the reference hole is detected by the light detection means, the position where the light detection is made is A second hand reference position determining step for determining a second hand wheel reference position;
を備えていることを特徴とする針位置検出方法。A needle position detection method comprising:

前記秒針基準位置判断ステップにより判断された前記秒針車の基準位置に従って、前記秒針車、前記分針車および前記時針車に対応する秒針、分針および時針を現在時刻に対応する位置まで運針させる運針制御ステップを更に備えていることを特徴とする請求項３に記載の針位置検出方法。In accordance with the second hand wheel reference position determined in the second hand reference position determining step, the second hand, the minute hand, and the hour hand corresponding to the second hand wheel, the minute hand wheel, and the hour hand wheel are moved to the position corresponding to the current time. The needle position detection method according to claim 3, further comprising: