21 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
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
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
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
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
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
Utility
Reduction Gear and Geared Motor
5 Aug 21
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
Rotor and Motor
15 Jul 21
A rotor is provided with: a rotor core which rotates integrally with a shaft and has a plurality of radially extending teeth; windings including coil portions wound around the teeth; a commutator that is attached to the rotor core and integrally rotates with the shaft, the commutator including metal commutator segments having contact portions with which precious metal brushes make sliding contact, and a plurality of terminals to which the windings are bonded; elements which include capacitors and respectively electrically connecting terminals to which both ends of the coil portions of the same phase are connected; and a coating layer formed of an oil applied to the contact portions.
Yasuhiro HASHIMOTO, Hideyuki UZAWA, Keiji NAKAMURA
Filed: 15 Jan 20
Utility
Motor
16 Sep 20
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: 4 Mar 20
Utility
Drive Unit and Motor System for Brushless DC Motors
9 Sep 20
A waveform control unit outputs a signal for driving a brushless DC motor by intermediate value energization to a waveform output unit, and outputs a signal for driving a brushless DC motor by sine wave energization to the waveform output unit when the signal in which the rotation position of the rotation reference is detected is acquired from the element, and the waveform control unit applies voltage corresponding to a sine value of an angle of a winding of one phase of n-phase windings when the brushless DC motor is to be driven by intermediate value energization, and outputs a signal for applying voltage corresponding to a sine value of an angle having similar phase difference as the sine wave energization drive with respect to the angle to the rest of the windings.
Shunpei FUJII
Filed: 1 Mar 20
Utility
Decelerator-equipped Motor Unit
10 Jun 20
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: 30 Jul 18
Utility
Bearing Unit and Motor
1 Apr 20
A bearing unit includes: an impregnated bearing that rotatably supports a shaft of a rotor; a storage part which is formed in a manner that an end surface of a housing incorporating the rotor in an axial direction becomes convex toward an outer side and which stores the impregnated bearing in a non-rotatable manner; and an oil return washer which is placed to face an end surface of the impregnated bearing stored in the storage part and which integrally rotates with the shaft.
Shinya IIO, Yoshinobu KATSUTA, Satoshi SHIMUZU
Filed: 26 Sep 19
Utility
Gear Box, Reduction Gear Equipped with Gear Box, Motor Unit, Mold for Manufacturing Gear Box, and Manufacturing Method of Gear Box
20 Nov 19
A gear box includes a gear box body, and a terminal which is integrated with the gear box body.
Makoto TAKEDA
Filed: 18 Feb 19