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公开(公告)号：US12088155B2
公开(公告)日：2024-09-10
申请号：US17831803
申请日：2022-06-03
Applicant: ROHM CO., LTD.
Inventor： Hiroki Hashimoto , Masanori Tsuchihashi , Mitsuo Okada
Abstract: A driving circuit drives a stepping motor in synchronization with an input clock using a 2-phase excitation method. A constant current chopper circuit generates a pulse modulation signal such that the detection value of the coil current approaches a current setting value. A detection window generation circuit generates a detection window. The detection window becomes an open state at a timing at which the coil current IOUT becomes smaller than a predetermined threshold value. A logic circuit sets a full-bridge circuit to a high-impedance state when the detection window is in the open state and controls the full-bridge circuit according to the pulse modulation signal when the detection window is in the closed state. In the open state of the detection window, a back electromotive force (BEMF) detection circuit detects the BEMF of the coil. A current value setting circuit controls a current setting value based on the BEMF.
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公开(公告)号：US12010424B2
公开(公告)日：2024-06-11
申请号：US18202113
申请日：2023-05-25
Applicant: SICK AG
Inventor： Thomas Pfrengle , Jakob Burger
IPC: H04N23/67 , G01D5/14 , G06K7/14 , H02K37/00 , H02K41/035
CPC classification number: H04N23/67 , G01D5/142 , G06K7/1413 , H02K37/00 , H02K41/0354
Abstract: An optoelectronic sensor comprising a light receiver, receiving optics in front of the light receiver, and a focus adjustment unit having an actuator and configured to move the light receiver, wherein the focus adjustment unit comprises a parallel guide having at least one flexible retaining element and moving the light receiver in a constant orientation on the optical axis of the receiving optics.
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公开(公告)号：US20230421005A1
公开(公告)日：2023-12-28
申请号：US18251642
申请日：2021-02-01
Applicant: Mitsubishi Electric Corporation
Inventor： Saya OKANO , Go KAJIWARA
Abstract: A bipolar rotor of a rotating electric machine is such that flexural rigidity asymmetry of a rotor main portion is adjusted using a cross slot provided in a rotor core, and flexural rigidity asymmetry of a rotor stepped portion is adjusted using a cutout groove provided in the rotor stepped portion, whereby optimization is achieved by combining the flexural rigidity asymmetry of the rotor main portion and the flexural rigidity asymmetry of the rotor stepped portion, and vibration in each double frequency vibration flexural vibration mode is restricted over a whole region of driving rotational speed.
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公开(公告)号：US20180102579A1
公开(公告)日：2018-04-12
申请号：US15286585
申请日：2016-10-06
Applicant: Universal Microwave Technology, Inc.
Inventor： Yu-Cheng Chen , Chien-Chih Li , Jen-Ti Peng , Chun-Wei Chen , Chun-Kai Wang , Chun-Yu Chu
CPC classification number: H01P1/208 , H01P1/2053 , H01P1/207 , H01P7/06 , H02K37/00
Abstract: Disclosed is an indirect transmission type automatic frequency modulation filter including a microwave body, a moving plate, a fastener, and a motor unit. The microwave body has plural openings. The moving plate includes a board, plural lugs and a first moving member, and the lugs and the first moving member form the board. The fastener includes a support base and a second moving member. The motor unit includes a rod and a driver, and the driver determines a clockwise rotation or a counterclockwise rotation and drives the rod to move the moving plate towards or away from the microwave body so as to insert the lugs into cavities to a desired depth and adjust a center frequency.
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公开(公告)号：US20170244290A1
公开(公告)日：2017-08-24
申请号：US15413926
申请日：2017-01-24
Applicant: ETA SA Manufacture Horlogere Suisse
Inventor： Martin JUFER , Yann LAVENU , David Benjamin KRAEHENBUEHL
Abstract: A motor module includes a stator formed of a main plate of a first thickness on which is mounted a rotor. The stator has at each end a receiving zone, the thickness of which is less than the first thickness.
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Patent Agency Ranking
公开(公告)号：US20150357894A1
公开(公告)日：2015-12-10
申请号：US14759893
申请日：2014-01-06
Applicant: SHANGHAI MOONS ' ELECTRIC CO., LTD.
Inventor： Yongsong WU , Yu ZHANG
CPC classification number: H02K37/00 , H02K1/04 , H02K1/12 , H02K3/30 , H02K3/46 , H02K3/522 , H02K37/18 , H02K2203/12
Abstract: A hybrid stepping motor comprises a front-end cover, a rear end cover, a rotating shaft, a rotor, a stator, a front bearing and a rear bearing and magnet steel, wherein the stator is an injection-molded stator. A stator core is internally provided with a plurality of injection-molded frameworks for bearing an enameled wire winding. Each injection-molded framework is provided with an enameled wire guard board on the inside. The inner side of each enameled wire guard board forms an inner hole of the stator and each enameled wire guard board serves as a seam for motor assembling. In the case of the same motor thickness, use of the motor of the present invention can enhance the moment by 15%˜45%. In the case of the same moment, use of the motor of the present invention can reduce the thickness by 10%˜15%. Thus, iron loss can be reduced when the motor is running.
Abstract translation: 混合式步进电动机包括前端盖，后端盖，旋转轴，转子，定子，前轴承和后轴承以及磁铁，其中定子是注塑定子。 定子芯在内部设置有多个注塑框架，用于承载漆包线缠绕。 每个注塑框架都在里面设有漆包线保护板。 每个漆包线保护板的内侧形成定子的内孔，并且每个漆包线保护板用作用于电动机组装的接缝。 在电机厚度相同的情况下，使用本发明的电动机可以将力矩增加15％〜45％。 在同一时刻的情况下，使用本发明的电动机可以将厚度减小10％〜15％。 因此，当电机运行时铁损可以减小。
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公开(公告)号：US20150249377A1
公开(公告)日：2015-09-03
申请号：US14698564
申请日：2015-04-28
Applicant: SHANGHAI MOONS' ELECTRIC CO., LTD.
Inventor： Kai ZENG , Yongsong WU
CPC classification number: H02K7/06 , F16H25/20 , F16H25/24 , F16H2025/204 , F16H2025/2078 , H02K37/00
Abstract: A linear stepping motor having anti-rotating screw is disclosed, comprising a stator, a rotor, a front-end cover, a rear-end cover and a screw, wherein the screw is an anti-rotating screw. The anti-rotating screw comprises a screw main body, one end of the screw main body is covered with a layer of plastic anti-rotating structure of injection molding. The front-end cover is provided with a segment of inner cavity, which is of shape matched with the anti-rotating structure, and the anti-rotating structure of the screw is in sleeved connection with the inner cavity of the front-end cover. The linear stepping motor in the present invention has the advantages in that the screw is free from limits in the processing length, has high strength, keeps high concentricity and other accuracy, and is of small error in use and less processing procedures, and saves working time. Less metallic profiles are consumed, energy is saved and the injection molding structure has a self-lubricating function, and when cooperating with the motor to perform linear motion, has a high efficiency and a long service life.
Abstract translation: 公开了一种具有防旋转螺杆的线性步进电机，包括定子，转子，前端盖，后端盖和螺钉，其中螺钉是防旋转螺钉。 防旋转螺杆包括螺杆主体，螺杆主体的一端被注塑成型的塑料防旋转结构层覆盖。 前端盖设有一个与防旋转结构相配合的内腔段，螺杆的防旋转结构与前端盖的内腔套接。 本发明的线性步进电动机的优点在于，螺杆在加工长度方面没有限制，具有高强度，保持高同心度等精度，使用误差小，加工程序少，节省工作 时间。 减少金属外形消耗，节约能源，注塑结构具有自润滑功能，与电机配合进行直线运动时，效率高，使用寿命长。
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公开(公告)号：US20140231684A1
公开(公告)日：2014-08-21
申请号：US14167021
申请日：2014-01-29
Applicant: FUJIKOKI CORPORATION
Inventor： Tomonori SHIMURA , Tomoari OHUCHI
CPC classification number: H02P8/38 , F16K31/04 , F16K37/0041 , H02K11/215 , H02K11/225 , H02K37/00 , H02P8/24 , H02P8/32
Abstract: To provide a stepping motor which can precisely and reliably detect stopping of a rotor with respect to a stopper with a simple structure, i.e., positioning of a base point of the rotor, and provide a motorized valve using it.The stepping motor includes a stator 55 and a rotor 57 rotationally driven by the stator 55, and a detection rotor 47 detecting a rotation position of the rotor 57. The detection rotor 47 is rotatably disposed on a co-axial center L with the rotor 57 and rotationally driven via a rotation drive mechanism between the rotor 57 and the detection rotor 47. The rotation drive mechanism has a drive play having a predetermined length or angle in the rotation direction.
Abstract translation: 提供一种步进电动机，其可以以简单的结构即转子的基点的定位精确而可靠地检测转子相对于止动件的停止，并提供使用其的电动阀。 步进电动机包括定子55和由定子55旋转驱动的转子57，检测转子47检测转子57的旋转位置。检测转子47与转子57可转动地配置在同轴中心L上 并通过转子57与检测转子47之间的旋转驱动机构旋转驱动。旋转驱动机构具有在旋转方向上具有预定长度或角度的驱动游隙。
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公开(公告)号：US07304409B2
公开(公告)日：2007-12-04
申请号：US11151376
申请日：2005-06-13
Applicant: Kaori Horiike
Inventor： Kaori Horiike
Abstract: A low-cost, small-sized and high-output driving device which makes it possible to produce two outputs separately and is easy to handle. The driving device has two driving units comprised of a coil, a stator, a magnet, and a rotor. The two driving units are arranged, side by side, along the axis of the driving device. In particular, a portion of the first rotor of one driving unit inserted in an inner periphery of the second coil of the other driving unit and the inner periphery of the second rotor of the other driving unit. The portion of the first rotor is magnetized by the second coil.
Abstract translation: 低成本，小尺寸和高输出的驱动装置，可以分开生产两个输出并且易于处理。 驱动装置具有由线圈，定子，磁体和转子组成的两个驱动单元。 两个驱动单元沿驱动装置的轴线并排布置。 特别地，一个驱动单元的第一转子的一部分插入另一驱动单元的第二线圈的内周和另一个驱动单元的第二转子的内周。 第一转子的部分被第二线圈磁化。
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公开(公告)号：US4615691A
公开(公告)日：1986-10-07
申请号：US559865
申请日：1983-12-08
Applicant: Carlos A. Hakim , Salomon Hakim
Inventor： Carlos A. Hakim , Salomon Hakim
CPC classification number: A61M27/002 , A61F2/0036 , A61M27/006 , H02K37/00
Abstract: A stepping motor isolated physically from electrical power sources and powered by the influence of a magnetic field applied from outside the apparatus, the stepping motor including a rotor and one or more stator elements, the stator elements being composed of magnetically soft and permeable material shaped and positioned with respect to the rotor so that when magnetized under the influence of the external field the stator elements strengthen and orient the magnetic field in their vicinities so as to cause movement of the rotor.
Abstract translation: 一种步进电机与电源物理隔离并由设备外部施加的磁场的影响而动力，该步进电机包括转子和一个或多个定子元件，定子元件由磁性和可渗透材料形成， 相对于转子定位，使得当在外部场的影响下被磁化时，定子元件加强并定向它们附近的磁场，以引起转子的移动。
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