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公开(公告)号：US20170052511A1
公开(公告)日：2017-02-23
申请号：US15237868
申请日：2016-08-16
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Satoshi SAKAI , Katsuya MUGISHIMA , Tomohiro IHASHI , Kenji OGASAWARA
CPC classification number: G04C3/146 , G04B27/001 , G04C3/14
Abstract: There is provided a movement including a center wheel & pinion that drives a minute hand, a second wheel & pinion that is arranged coaxially with a center axle of the center wheel & pinion, a first light emitting element that is arranged on one side in an axial direction of the center axle with respect to the center wheel & pinion and the second wheel & pinion, and a first light receiving element that is arranged on the other side in the axial direction of the center axle across the second wheel & pinion, and that detects light emitted from the first light emitting element. The center wheel & pinion has a first center wheel transmittable portion through which the light emitted from the first light emitting element is transmittable, and a second center wheel transmittable portion which is disposed on a rotation trajectory of the first center wheel transmittable portion and through which the light emitted from the first light emitting element is transmittable. The second wheel & pinion has a first second wheel transmittable portion which is disposed on the rotation trajectory of the first center wheel transmittable portion and the second center wheel transmittable portion when viewed in the axial direction of the center axle and through which the light emitted from the first light emitting element is transmittable.
Abstract translation: 提供了一种运动，包括驱动分针的中心轮和小齿轮，与中心轮和小齿轮的中心轴同轴布置的第二轮和小齿轮，第一发光元件，其布置在一侧 中心轴相对于中心轮和小齿轮和第二轮和小齿轮的轴向方向，以及第一光接收元件，其布置在穿过第二轮和小齿轮的中心轴的轴向方向上的另一侧上，以及 其检测从第一发光元件发射的光。 中心轮和小齿轮具有第一中心轮可传递部分，从第一发光元件发射的光可透过该第一中心轮传送部分，以及设置在第一中心轮可传送部分的旋转轨迹上的第二中心轮传送部分， 从第一发光元件发射的光可透射。 第二轮和小齿轮具有第一第二轮可传递部分，当从中心轴的轴向方向观察时，第一第二轮可传递部分设置在第一中心轮可传递部分和第二中心轮传送部分的旋转轨迹上， 第一发光元件是可透射的。
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2.发明申请公开(公告)号：US20140071794A1
公开(公告)日：2014-03-13
申请号：US14013120
申请日：2013-08-29
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kosuke YAMAMOTO , Saburo MANAKA , Kazumi SAKUMOTO , Kenji OGASAWARA , Keishi HONMURA , Satoshi SAKAI
Abstract: A stepping motor control circuit includes: a rotation detection unit that detects a induced signal exceeding a predetermined reference threshold voltage which is generated by a stepping motor in a detection section divided into at least three sections, and detects a rotation state on the basis of a pattern indicating whether the induced signal exceeding a reference threshold voltage is detected in each of the sections; and a control unit that selects a main drive pulse depending on the rotation state detected by the rotation detection unit from a plurality of main drive pulses which are different from each other in energy, and drives the stepping motor. When the induced signal exceeding a reference threshold voltage is not detected in an initial section, the rotation detection unit detects the induced signal by shifting an end position of at least one section other than the initial section to a rear side by a predetermined amount.
Abstract translation: 步进电机控制电路包括：旋转检测单元，其检测超过由划分为至少三个部分的检测部中由步进电机产生的预定参考阈值电压的感应信号，并基于 指示在每个部分中是否检测到超过参考阈值电压的感应信号的模式; 以及控制单元，其根据由旋转检测单元检测的旋转状态，从能量彼此不同的多个主驱动脉冲中选择主驱动脉冲，并驱动步进电机。 当在初始部分中没有检测到超过参考阈值电压的感应信号时，旋转检测单元通过将除了初始部分之外的至少一个部分的结束位置向后侧移动预定量来检测感应信号。
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公开(公告)号：US20200313583A1
公开(公告)日：2020-10-01
申请号：US16801816
申请日：2020-02-26
Applicant: Seiko Instruments Inc.
Inventor： Tetsuya NOBE , Satoshi SAKAI , Kazumi SAKUMOTO , Kosuke YAMAMOTO , Akihito OKUMURA
Abstract: A motor driving apparatus including a driving circuit for supplying a first pulse with which a first coil included in a two-phase stepping motor generates a first magnetic flux, a second pulse with which a second coil included in the stepping motor generates a second magnetic flux opposite to the first magnetic flux, a third pulse with which the first coil generates the second magnetic flux, and a fourth pulse with which the second coil generates the first magnetic flux, to the stepping motor. The driving circuit supplies the second pulse, the third pulse, and the fourth pulse in this order to the stepping motor in a state of being stopped to start the stepping motor, and supplies the first pulse, the second pulse, the third pulse, and the fourth pulse in this order to the stepping motor after starting to continuously drive the stepping motor.
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Patent Agency Ranking
公开(公告)号：US20170052510A1
公开(公告)日：2017-02-23
申请号：US15237881
申请日：2016-08-16
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Katsuya MUGISHIMA , Satoshi SAKAI , Kenji OGASAWARA , Tomohiro IHASHI
Abstract: There is provided a movement which can reduce power consumption when a hand position is detected.The movement includes a center wheel & pinion that drives a minute hand, a minute detection wheel in which a gear ratio of the center wheel & pinion with respect to the minute detection wheel is set to 1/M by using M as an integer, a first light emitting element, and a first light receiving element. The center wheel & pinion has a pair of center wheel transmittable portions which are disposed on the same rotation trajectory, and through which light emitted from the first light emitting element is transmittable. The minute detection wheel has the N-number of minute detection wheel transmittable portions which are disposed on the same rotation trajectory, and through which light emitted from the first light emitting element is transmittable. The minute detection wheel transmittable portions are disposed at an interval of 360°/N in a circumferential direction of the minute detection wheel. A pair of the center wheel transmittable portions are disposed in parallel at an unequal angular interval in the circumferential direction of a center axle of the center wheel & pinion. An angular interval of the center wheel transmittable portions adjacent to each other in the circumferential direction of the center axle of the center wheel & pinion is set to magnification of 360°/(M×N).
Abstract translation: 该运动包括驱动分针的中心轮和小齿轮，通过使用M作为整数将中心轮和小齿轮相对于微小检测轮的齿轮比设定为1 / M的分钟检测轮， 第一发光元件和第一光接收元件。 中心轮和小齿轮具有一对中心轮传送部分，它们设置在相同的旋转轨迹上，并且从第一发光元件发射的光可透过。 微小检测轮具有设置在相同旋转轨迹上的N个微小检测轮传送部分，并且从第一发光元件发射的光可透射。 微小检测轮传送部分在微小检测轮的圆周方向上以360°/ N的间隔设置。 一对中心轮可传递部分在中心轮和小齿轮的中心轴的圆周方向上以不等角度间隔平行设置。 在中心轮和小齿轮的中心轴的圆周方向上彼此相邻的中心轮可传递部分的角度间隔设定为360°/（M×N）的倍率。
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公开(公告)号：US20200249630A1
公开(公告)日：2020-08-06
申请号：US16752897
申请日：2020-01-27
Applicant: Seiko Instruments Inc.
Inventor： Satoshi SAKAI , Tetsuya Nobe
Abstract: A timepiece includes a stepping motor having a rotor and a coil, and a drive circuit that applies a first drive pulse having a stable stationary position at a rotor rotation angle of 90 degrees or less from a reference position and a second drive pulse having the stable stationary position at a rotor rotation angle of 90 degrees or more from the reference position, as a pulse for driving the rotor, to the coil. When a period during which the pulse is not applied to the coil is assumed as a waiting period, the drive circuit generates the waiting period after a first application of the second drive pulse after an application of the pulse to the coil is started and rotates the rotor by one or more turns without passing through the waiting period at at least one predetermined timing after the waiting period.
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公开(公告)号：US20180203417A1
公开(公告)日：2018-07-19
申请号：US15867307
申请日：2018-01-10
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Satoshi SAKAI , Tomohiro IHASHI
IPC: G04F10/00
Abstract: There is provided a timepiece capable of selecting a timepiece mode and a chronograph mode. The timepiece includes an hour hand and a minute hand which indicate a time in a case where the timepiece mode is selected, and a main control unit that performs control so as to start time measurement by simultaneously starting hand operations of the hour hand and the minute hand in a case where the chronograph mode is selected, to indicate a measured time at the time of stopping by stopping the hand operation of the hour hand, and to continue the time measurement by continuing the hand operation of the minute hand.
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公开(公告)号：US20170052509A1
公开(公告)日：2017-02-23
申请号：US15237896
申请日：2016-08-16
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Satoshi SAKAI , Katsuya MUGISHIMA , Tomohiro IHASHI , Kenji OGASAWARA
Abstract: A movement includes a second light emitting element, a second light receiving element, a second wheel & pinion that drives a second hand and that has a first second wheel transmittable portion and a second second wheel transmittable portion through which light is transmittable. A control unit detects a position of the second wheel & pinion by causing the second light receiving element to receive the transmitted light emitted from the second light emitting element and transmitted through the first second wheel transmittable portion or the second second wheel transmittable portion. A second detection wheel has a second detection wheel transmittable portion through which the transmitted light is transmittable. The control unit detects a transmitting time point that the transmitted light is transmitted through the first second wheel transmittable portion or transmitted concurrently the second second wheel transmittable portion and the second detection wheel transmittable portion.
Abstract translation: 运动包括第二发光元件，第二光接收元件，驱动秒针的第二轮和小齿轮，并且具有可透射光的第一第二轮可传送部分和第二第二轮传送部分。 控制单元通过使第二光接收元件接收从第二发光元件发射并透射通过第一第二轮传送部分或第二第二轮传送部分的透射光来检测第二轮和小齿轮的位置。 第二检测轮具有第二检测轮传送部分，透射光可透过该部分透射。 控制单元检测发射时间点，透射光通过第一第二轮可传送部分传播或同时传送到第二第二轮可传送部分和第二检测轮传送部分。
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8.发明申请公开(公告)号：US20140071795A1
公开(公告)日：2014-03-13
申请号：US14013146
申请日：2013-08-29
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Saburo MANAKA , Kenji OGASAWARA , Kazumi SAKUMOTO , Keishi HONMURA , Kosuke YAMAMOTO , Satoshi SAKAI
Abstract: A rotation detection circuit detects an induced current flowing through a drive coil of a stepping motor in a detection section divided into a plurality of sections, and detects a rotation state of the stepping motor on the basis of a pattern indicating whether or not the induced current exceeds a predetermined reference value in each of the sections. A control unit selects a drive pulse corresponding to the rotation state detected by the rotation detection unit, and supplies a drive current to a drive coil to rotatably drive the stepping motor. The rotation detection unit carries out detection by selecting a detection direction of the induced current in the sections after the first section on the basis of whether or not the induced current exceeding each of a plurality of reference values is detected plural times in the first section.
Abstract translation: 旋转检测电路检测在划分为多个部分的检测部中流过步进电动机的驱动线圈的感应电流，并且基于表示感应电流的图案来检测步进电动机的旋转状态 在每个部分中超过预定的参考值。 控制单元选择与由旋转检测单元检测到的旋转状态对应的驱动脉冲，并向驱动线圈提供驱动电流以可旋转地驱动步进电机。 旋转检测单元基于在第一部分中是否检测到多个参考值中的每一个以上的感应电流被多次检测，在第一部分之后的部分中选择感应电流的检测方向来进行检测。
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