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公开(公告)号：US09608487B2
公开(公告)日：2017-03-28
申请号：US14350454
申请日：2012-10-17
Applicant: Mitsuba Corporation
Inventor： Kenji Sakata , Akio Hoshino
CPC classification number: H02K3/28 , H02K3/12 , H02K15/045 , H02K23/30 , H02K2213/03
Abstract: A winding wire (14) includes a first coil (15) formed by being wound N/2+α times between two predetermined slots (13) present in positions which are point-symmetrical with respect to a rotating shaft, and a second coil (16) formed by being wound N/2−α times between the two predetermined slots (13) which are the same as those between which the first coil (15) is formed, when a predetermined number of turns of the winding wire (14) between the predetermined slots is N.
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公开(公告)号：US11764658B2
公开(公告)日：2023-09-19
申请号：US17223028
申请日：2021-04-06
Applicant: MITSUBA Corporation
Inventor： Kenji Sakata , Akihiro Kaihatsu
Abstract: An electric motor and a method for manufacturing an electric motor capable of improving rotation balance of an armature and realizing effective brake braking with a simple configuration are provided. In an electric motor including an armature core having a plurality of teeth and teeth within a yoke, a winding wound between the slots, and a commutator having and a plurality of segments to which the winding is connected, the winding has a main winding that applies a rotational force to the armature core and a brake winding that applies a braking force to the armature core, and an H bridge circuit is built between the winding and a power supply, and the main winding and the brake winding of the winding are disposed at positions for adjusting balance when the armature core rotates.
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Patent Agency Ranking
公开(公告)号：US10890243B2
公开(公告)日：2021-01-12
申请号：US16388895
申请日：2019-04-19
Applicant: MITSUBA Corporation
Inventor： Kenji Sakata , Hiroyuki Yoshida , Satoru Yoshida
Abstract: The motor with deceleration mechanism includes: a motor shaft (11), which is accommodated in a motor case (21) and in which an axial end portion (11a) is formed into a spherical shape; a worm, arranged on the motor shaft (11); a worm wheel, accommodated in a gear frame and engaging with the worm; a radial bearing (41), rotatably supporting the motor shaft (11); and a first thrust bearing (42), which is disposed inside the motor case (21), and in which a shaft facing surface (42s) facing the axial end portion (11a) of the motor shaft (11) and a counter shaft facing surface (42c) on the opposite side are respectively formed spherically; an average sliding radius between the first thrust bearing (42) and the motor case (21) is larger than an average sliding radius between the first thrust bearing (42) and the motor shaft (11).
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公开(公告)号：USRE45912E1
公开(公告)日：2016-03-01
申请号：US14152113
申请日：2014-01-10
Applicant: MITSUBA Corporation
Inventor： Kenji Sakata , Yoshichika Kawashima
CPC classification number: H02K23/20 , H02K23/30 , Y02T10/641
Abstract: In an electric motor, magnets (4) have two pairs of poles, the number of teeth (9) is 18, and the number of segments (14) of a commutator is 18. Winding wires (12, 25) for forming an armature coil (7) are formed by a first conductive wire (110) or a second conductive wire (120). The winding wire (25) has a first coil winding wire (7A) and a second coil winding wire (7B). The coil winding wires are each wound around four teeth (9) adjacent to each other. An end (31) of the second coil winding wire is connected to a segment (14) adjacent to a segment arranged at a position which is point symmetric with respect to a segment to which an end (30) of the first coil winding wire is connected. According to the invention, in the electric motor capable of changing the rotational speed of the armature by switching application of an electric current among three brushes, vibration and operating noise can be reduced, and mounting of the connecting wires and the winding wires can be facilitated.
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公开(公告)号：US20140252909A1
公开(公告)日：2014-09-11
申请号：US14350454
申请日：2012-10-17
Applicant: Mitsuba Corporation
Inventor： Kenji Sakata , Akio Hoshino
CPC classification number: H02K3/28 , H02K3/12 , H02K15/045 , H02K23/30 , H02K2213/03
Abstract: A winding wire (14) includes a first coil (15) formed by being wound N/2+α times between two predetermined slots (13) present in positions which are point-symmetrical with respect to a rotating shaft, and a second coil (16) formed by being wound N/2−α times between the two predetermined slots (13) which are the same as those between which the first coil (15) is formed, when a predetermined number of turns of the winding wire (14) between the predetermined slots is N.
Abstract translation: 绕组线（14）包括第一线圈（15），该第一线圈（15）通过在存在于相对于旋转轴点对称的位置中的两个预定槽（13）之间缠绕N / 2 +α倍而形成，以及第二线圈 16），通过在与形成有第一线圈（15）的那些相同的两个预定槽（13）之间缠绕N / 2-α次而形成，当绕组线（14）的预定匝数 在预定时隙之间是N.
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公开(公告)号：US09059622B2
公开(公告)日：2015-06-16
申请号：US13771333
申请日：2013-02-20
Applicant: MITSUBA CORPORATION
Inventor： Masaru Ishikawa , Kenji Sakata
Abstract: A wiper motor 10 includes: an armature 20; an armature shaft 21; a core 20a composed of eighteen teeth portions; a commutator 23 having eighteen commutator bars 23a1 to 23a18; and a winding 20b composed of eighteen coil portions 20b1 to 20b18; an equalizer 27 composed of nine connecting conductors 27a1 to 27a9; a first brush 36, a second brush 35 shifted from a first brush 26 by 90 degrees, and a third brush 37 shifted from the first and second brushes by 90 or more degrees, each brush being arranged so as to come in sliding contact with the commutator bars, the first brush being connected to a common electric potential, a current for rotating the armature at low speed is selectively supplied to the second brush, and a current for rotating the armature at high speed is selectively supplied to the third brush.
Abstract translation: 刮水器马达10包括：衔铁20; 电枢轴21; 由十八个齿部分组成的芯体20a; 具有十八个换向器杆23a1至23a18的换向器23; 以及由十八个线圈部分20b1至20b18组成的绕组20b; 由9个连接导体27a1〜27a9构成的均衡器27; 第一刷子36，从第一刷子26移动90度的第二刷子35和从第一和第二刷子移动90度或更多度的第三刷子37，每个刷子布置成与第一刷子36滑动接触 换向器条，第一电刷连接到公共电位，用于以低速旋转电枢的电流被选择性地供给到第二电刷，并且用于使电枢高速旋转的电流被选择性地供给到第三电刷。
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公开(公告)号：US20130162087A1
公开(公告)日：2013-06-27
申请号：US13771333
申请日：2013-02-20
Applicant: MITSUBA CORPORATION
Inventor： Masaru Ishikawa , Kenji Sakata
IPC: H02K1/17
Abstract: A wiper motor 10 includes: an armature 20; an armature shaft 21; a core 20a composed of eighteen teeth portions; a commutator 23 having eighteen commutator bars 23a1 to 23a18; and a winding 20b composed of eighteen coil portions 20b1 to 20b18; an equalizer 27 composed of nine connecting conductors 27a1 to 27a9; a first brush 36, a second brush 35 shifted from a first brush 26 by 90 degrees, and a third brush 37 shifted from the first and second brushes by 90 or more degrees, each brush being arranged so as to come in sliding contact with the commutator bars, the first brush being connected to a common electric potential, a current for rotating the armature at low speed is selectively supplied to the second brush, and a current for rotating the armature at high speed is selectively supplied to the third brush.
Abstract translation: 刮水器马达10包括：衔铁20; 电枢轴21; 由十八个齿部分组成的芯体20a; 具有十八个换向器杆23a1至23a18的换向器23; 以及由十八个线圈部分20b1至20b18组成的绕组20b; 由9个连接导体27a1〜27a9构成的均衡器27; 第一刷子36，从第一刷子26移动90度的第二刷子35和从第一和第二刷子移动90度或更多度的第三刷子37，每个刷子布置成与第一刷子36滑动接触 换向器条，第一电刷连接到公共电位，用于以低速旋转电枢的电流被选择性地供给到第二电刷，并且用于使电枢高速旋转的电流被选择性地供给到第三电刷。
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