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公开(公告)号：US20240361153A1
公开(公告)日：2024-10-31
申请号：US18764383
申请日：2024-07-05
发明人： Akira MATSUNAWA
摘要： A resolver includes excitation coils and a detection coil. One of the excitation coils and the detection coil includes a sine coil and a cosine coil that transmit AC signals having phases of the electrical angle different from each other by 90 degrees. Further, the other coil is provided with an annular magnetic pole group in which a plurality of magnetic poles is disposed adjacent to each other in the circumferential direction at a facing face at which the rotor and the stator face each other. The plurality of sine coils and the plurality of the cosine coils are alternately disposed adjacent to each other in the circumferential direction at the facing face. The circumferential intervals between the magnetic poles included in the excitation coils and the detection coil are identical.
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公开(公告)号：US20240359870A1
公开(公告)日：2024-10-31
申请号：US18574288
申请日：2023-04-25
发明人： Ryou OOTAKA , Taiyo MIYAZAKI , Masayuki IIDA , Hayanori KADOGUCHI
CPC分类号： B65D25/108 , B65D85/68 , B65D2585/6877
摘要： A packaging structure of the disclosure includes: a box in which a component is stored; and a holding member installed in the box, the holding member being configured to hold the component. The holding member includes: an undersurface portion that has a first opening portion into which the component is inserted and is placed on a bottom surface of the box; a top surface portion that has a second opening portion into which the component is inserted and is placed above the undersurface portion; and a first side surface portion connecting the undersurface portion and the top surface portion in an up-and-down direction. The holding member is formed by being bent along boundary lines between the first side surface portion, the undersurface portion, and the top surface portion, and is formed into two kinds of three-dimensional shapes that are mirror symmetric to each other, according to bending directions of the boundary line.
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公开(公告)号：US12015309B2
公开(公告)日：2024-06-18
申请号：US17665594
申请日：2022-02-07
发明人： Wataru Kusakabe , Yuya Iwasaki
CPC分类号： H02K1/2766 , H02K21/16
摘要： A columnar core main body including a plurality of laminated cores having the same shape and that has a shaft hole on a rotation center side, a plurality of permanent magnets penetrate around the shaft hole of the core main body in an axial direction and is fixed in each of a plurality of magnet accommodating holes arranged in a circular shape in a circumferential direction, and protrusions in the magnet accommodating holes in one-to-one correspondence. The protrusion protrudes along the circumferential direction and comes into pressure contact with the permanent magnet accommodated in the magnet accommodating hole from the radially inner side. Each of the protrusions is defined by a protrusion forming space extending along the circumferential direction from a radially inner side surface of each magnet accommodating hole, and at least one of the protrusion and the protrusion forming space is on the magnetic pole center.
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公开(公告)号：US20230421014A1
公开(公告)日：2023-12-28
申请号：US18340031
申请日：2023-06-23
发明人： Norihisa TANIKAWA , Kenji SHIRAKI , Sakie KAWAKAMI
CPC分类号： H02K5/1735 , F16C19/06 , F16C35/06 , H02K7/085 , H02K21/22 , F16C2380/26
摘要： A holding structure includes a bearing holder including a cylindrical holder portion into which a ball bearing is internally fitted from one side in an axial direction of a shaft, and a positioning portion on another side in the axial direction of the holder portion and abutting on the ball bearing; and a mounting plate having a cylindrical mounting portion in which a portion of the holder portion is press-fitted. An inner surface of the holder portion includes an adhesion surface bonded to an outer peripheral surface of the ball bearing, a relief surface having an inner diameter larger than an inner diameter of the adhesion surface, and a step surface connecting the adhesion surface and the relief surface. An axial position of the step surface overlaps the ball bearing engaged to the bearing holder.
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公开(公告)号：US20220352791A1
公开(公告)日：2022-11-03
申请号：US17730193
申请日：2022-04-27
发明人： Tadayuki WAKITA
摘要： A brush motor includes: a rotor core provided in a rotor; s teeth provided in the rotor core; s concentrated-winding coils with electric wires being respectively wound around the teeth; a commutator provided on the rotor in a relatively non-rotatable manner; c commutator pieces provided in the commutator and connected to the coils; p pairs of magnet magnetic poles provided on a stator and arranged to face the teeth; and a brush that is brought into sliding contact with the commutator pieces to supply a current to the coils, in which 0.5
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公开(公告)号：US11303189B2
公开(公告)日：2022-04-12
申请号：US16624905
申请日：2018-07-31
摘要： A worm wheel is installed inside a wheel accommodation chamber of a body casing; a motor is fastened by screws from the right side perpendicular to the axis line of the worm wheel, thus forming a motor fastening part; and a worm fixed to an output shaft of the motor is engaged with the worm wheel. A board accommodation chamber is formed so as to be adjacent to the right of the wheel accommodation chamber, and a control board is inserted inside the board accommodation chamber from below. The control board is disposed so as to be inclined in a direction in which the upper end of the control board is displaced toward the wheel accommodation chamber from an erect attitude perpendicular to the axis line of the output shaft of the motor, and thus the upper end is separated from the motor fastening part in the direction of the axis line of the output shaft.
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公开(公告)号：US20220069666A1
公开(公告)日：2022-03-03
申请号：US17458542
申请日：2021-08-27
摘要： To provide a brushless motor with a simple configuration, which has accomplished size reduction.
An inner rotor brushless motor having a rotor in a center of a cylindrical stator includes: three bus bars on one end side of the stator in an axial direction thereof, the bus bars connecting three phase coils provided to the stator on a phase-by-phase basis; a bottomed tubular connector portion adjacent to a housing that houses the stator and the rotor; a plurality of connector terminals fixed, penetrating a bottom portion of the connector portion, the plurality of connector terminals being exposed to an internal space of the connector portion; and a board stretching from the one end side of the stator in the axial direction to the bottom portion side of the connector portion, the board being configured to electrically connect an end of each of the bus bars and the penetrating connector terminal.-
公开(公告)号：US20210344260A1
公开(公告)日：2021-11-04
申请号：US16624905
申请日：2018-07-31
摘要： A worm wheel is installed inside a wheel accommodation chamber of a body casing; a motor is fastened by screws from the right side perpendicular to the axis line of the worm wheel, thus forming a motor fastening part; and a worm fixed to an output shaft of the motor is engaged with the worm wheel. A board accommodation chamber is formed so as to be adjacent to the right of the wheel accommodation chamber, and a control board is inserted inside the board accommodation chamber from below. The control board is disposed so as to be inclined in a direction in which the upper end of the control board is displaced toward the wheel accommodation chamber from an erect attitude perpendicular to the axis line of the output shaft of the motor, and thus the upper end is separated from the motor fastening part in the direction of the axis line of the output shaft.
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公开(公告)号：US20210239203A1
公开(公告)日：2021-08-05
申请号：US17153503
申请日：2021-01-20
发明人： Masakazu SUWA , Takao MITSUMIZO
IPC分类号： F16H57/03 , F16H1/46 , F16H57/031 , F16H57/032
摘要： A reduction gear configured to decelerate and output rotation of a motor by two-stage planetary gear mechanisms disposed side by side in an axial direction includes: a case made of resin, the case being formed into a cylindrical shape in which the two-stage planetary gear mechanisms are incorporated, and having at least one of a lid portion and a bottom portion provided at each of both axial ends; and a reinforcing component that is formed of a material having a Young's modulus higher than a Young's modulus of a material of the case. The reinforcing component extends along at least a part of an inner peripheral surface in an axial central portion of the case.
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公开(公告)号：US10560004B2
公开(公告)日：2020-02-11
申请号：US15678715
申请日：2017-08-16
发明人： Kazuyuki Yamamoto , Satoshi Kikuchi
IPC分类号： H02K11/215
摘要： A sensor magnet holder is used to fix a sensor magnet to a motor shaft. The sensor magnet holder includes a press fitting part to which the motor shaft is press fitted; a holding part provided radially outside the press fitting part to hold the sensor magnet; and a joint part that joins the press fitting part and the holding part. The joint part is configured such that at least a part of the joint part is deflected by an external force.
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