42 patents
Utility
Ball Bearing Holding Structure and Fan Motor
28 Dec 23
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.
Norihisa TANIKAWA, Kenji SHIRAKI, Sakie KAWAKAMI
Filed: 23 Jun 23
Utility
Contact Structure and Brush Motor
28 Dec 23
Regarding a contact structure and a brush motor, wear resistance of a commutator and a brush and an insulating property of a slit is improved.
Yasuhiro HASHIMOTO
Filed: 22 Jun 23
Utility
Control Device of Rotation Detector
7 Dec 23
A control device of a rotation detector inputs an AC signal to an excitation coil and detects a rotation angle on the basis of a signal obtained by a detection coil.
Kohei HAMAZAKI
Filed: 10 Dec 21
Utility
Bbearing Unit and Speed Reducer-equipped Motor
30 Nov 23
A bearing unit includes: a thrust damper extendable in an axial direction of a shaft placed in a gearbox, the movement of which toward one side in the axial direction is regulated; a shaft receiver component held by the thrust damper on the other side of the thrust damper in the axial direction; a metal holder that holds the shaft receiver component in such a manner as to be detachable in the axial direction; and an oilless metal held by the metal holder and placed on the other side of the shaft receiver component, in which the thrust damper, the shaft receiver component, the metal holder, and the oilless metal are integrated all together before being incorporated into the gearbox.
Kazuyuki YAMAMOTO
Filed: 14 Oct 22
Utility
Resolver
26 Oct 23
A resolver includes a first coil group and a second coil group.
Akira MATSUNAWA
Filed: 10 Dec 21
Utility
Rotor and brushless motor
12 Sep 23
A rotor applied to an inner rotor brushless motor includes: a rotor core having a laminate of a plurality of annular thin plate-shaped core pieces, the rotor core being configured to rotate together with a shaft in an integrated manner; a cylindrical resin magnet mounted on an outer peripheral surface of the rotor core via a gap; a groove-shaped adhesive admission portion in a straight line along the entire length of the rotor core in an axial direction thereof, the adhesive admission portion being recessed into the outer peripheral surface of the rotor core; and an adhesive configured to bond and fix the rotor core and the magnet.
Kenji Shiraki, Katsuhito Nishizawa, Shou Kubota, Yuhei Ito
Filed: 27 Aug 21
Utility
Brushless Motor
31 Aug 23
A brushless motor where a stator and a rotor are housed in a housing, includes: three busbars located on one end side of the stator in an axial direction, the three busbars connecting three-phase coils provided to the stator on a per-phase basis; three output terminals on the one end side of the busbars, the three output terminals extending in the axial direction while being electrically continuous with the busbars; and a compatible component having: a holder portion placed on the one end side of the busbars in the housing and supported by the housing; and terminals each electrically connected to the respective output terminal and exposed to an outside of the housing.
Katsuhito NISHIZAWA, Shou KUBOTA
Filed: 21 Feb 23
Utility
Brushless motor
1 Aug 23
Kenji Shiraki, Katsuhito Nishizawa, Shou Kubota, Takuya Takahashi
Filed: 27 Aug 21
Utility
Reduction gear and geared motor
14 Feb 23
A reduction gear configured to decelerate and output rotation of a motor includes two-stage planetary gear mechanisms that are provided side by side in an axial direction of the motor and are each configured of helical gears, and a case made of resin and formed into a cylindrical shape, the case incorporating the two-stage planetary gear mechanisms.
Masakazu Suwa, Takao Mitsumizo
Filed: 25 Jan 21
Utility
Reduction gear and geared motor
13 Dec 22
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.
Masakazu Suwa, Takao Mitsumizo
Filed: 20 Jan 21
Utility
Brush Motor
3 Nov 22
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<p/s<1 and s<c.
Tadayuki WAKITA
Filed: 27 Apr 22
Utility
Motor
1 Nov 22
A motor includes a case; and a partition that is fitted into the case and has an easily deformable part formed on an outer peripheral surface for dispersing and dissipating vibration transmitted between the case and the partition.
Kunihiro Kuwano, Takashi Muramoto
Filed: 5 Mar 20
Utility
Rotor and Brushless Motor
11 Aug 22
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.
Wataru KUSAKABE, Yuya IWASAKI
Filed: 7 Feb 22
Utility
Rotor and Brushless Motor
11 Aug 22
A rotor includes a cylindrical core main body having a columnar space on a rotation center side.
Wataru KUSAKABE
Filed: 7 Feb 22
Utility
Sensor magnet of motor having a fixing portion to press-fit to a shaft without a sensor magnet holder
15 Mar 22
An annular sensor magnet to be fixed to a motor shaft by a press-fit includes an annular portion having magnetic poles alternately formed in an outer peripheral portion.
Kazuyuki Yamamoto, Satoshi Kikuchi
Filed: 18 Jul 18
Utility
Rotor and Brushless Motor
3 Mar 22
Kenji SHIRAKI, Katsuhito NISHIZAWA, Shou KUBOTA, Yuhei ITO
Filed: 27 Aug 21
Utility
Brushless Motor
3 Mar 22
Kenji SHIRAKI, Katsuhito NISHIZAWA, Shou KUBOTA, Takuya TAKAHASHI
Filed: 27 Aug 21
Utility
Motor Unit Equipped with Decelerator
4 Nov 21
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.
Junya Kurata, Satoshi Kikuchi, Yoshihiro Hanazawa
Filed: 31 Jul 18
Utility
Decelerator-equipped motor unit
2 Nov 21
Provided is a decelerator-equipped motor unit which can achieve cost reductions in the control board and improvement of both mechanical and electrical reliability through a particular arrangement of elements on the board, thereby achieving a smaller size by realizing an appropriate board shape without increasing the size of the unit.
Junya Kurata, Satoshi Kikuchi, Bjoern Schmitz, Erwin Kessler, Gebhard Hopfmueller
Filed: 31 Jul 18
Utility
Reduction Gear and Geared Motor
5 Aug 21
A reduction gear configured to decelerate and output rotation of a motor includes two-stage planetary gear mechanisms that are provided side by side in an axial direction of the motor and are each configured of helical gears, and a case made of resin and formed into a cylindrical shape, the case incorporating the two-stage planetary gear mechanisms.
Masakazu SUWA, Takao MITSUMIZO
Filed: 25 Jan 21