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| Number | Title | Issue Date |
| 8164289 | Brushless motor and control method of brushless motor In a brushless motor having a stator including armature windings for a plurality of phases, and a rotor including a permanent magnet and being rotatably disposed inside or outside of the stator, an inter-phase induced voltage waveform between two different phases in... | 04/24/2012 |
| 8112197 | Wiper apparatus control method and wiper control system A wiper apparatus includes: a wiper blade driven by a first motor; and a wiper blade driven by a second motor. The motors are drive-controlled by control microcomputers, respectively. The control microcomputers are connected to each other through a communication lin... | 02/07/2012 |
| 8069740 | Starter motor A screw mounting hole and a female screw part are formed in a bearing part of a gear cover, and the screw insertion hole is formed in the idle shaft. The idle shaft is fixed to the gear cover by inserting a fixing screw through the screw mounting hole and screwing i... | 12/06/2011 |
| 8049449 | Brushless motor control method and brushless motor In a brushless motor for an electric power steering device having a configuration of 2 poles and 3 slots, or of an integral multiple thereof, a stator coil is supplied with current containing a higher harmonic component. A difference of 0.5% to 1.5% is provided betw... | 11/01/2011 |
| 8044614 | Wiper apparatus control method and wiper control system A wiper apparatus includes: a wiper blade driven by a motor; and a wiper blade driven by a motor. The motors are drive-controlled by control microcomputers, respectively. The control microcomputers are connected to each other through a communication line. While exch... | 10/25/2011 |
| 8005590 | Wiper control method and wiper control system When a wiper is started, a wiper arm is moved at first in the backward path direction (S1). If a motor is locked (S2) before an original point position signal is outputted, a reciprocating operation for moving the wiper arm temporarily in the forward p... | 08/23/2011 |
| 7989999 | Starter In a starter includes a motor provided with a motor contact for controlling electric power supply to an armature arranged inside a motor housing; a gear cover section, which is mounted on the motor, having a flange section formed on the outer circumference thereof; ... | 08/02/2011 |
| 7959204 | Electric opening/closing device for vehicle An electric opening/closing device for vehicle, which has good layout characteristic of the vehicle and is provided with a highly-rigid attachment part, is provided. The vehicle electric opening/closing device comprises: a worm wheel meshed with a worm provided on a... | 06/14/2011 |
| 7928622 | Brushless motor with skewed rotor segments In a brushless motor including a rotor having 2n magnetic poles and a stator having 3n slots, the magnetic poles of the rotor are composed of segment magnets arranged in three columns extending in an axial direction. The magnets of each column are displaced from the... | 04/19/2011 |
| 7906880 | Brushless motor with skewed rotor segments In a brushless motor including a rotor having 2n poles and a stator having 3n slots, segment magnets are arranged in three columns in the axial direction, thus constituting rotor poles. The segment magnets of adjacent columns, which are identical in po... | 03/15/2011 |
| 7884520 | Brushless motor A brushless motor according to the present invention is provided with a tubular stator case, a stator core fitted into the stator case, and a rotor rotatably supported via a bearing inside the stator core. The stator core includes a tubular yoke portion and a plural... | 02/08/2011 |
| 7876013 | Brushless motor A brushless motor has rotor cores dividedly formed as plural sections in an axial direction, segment magnets secured to outer circumferential surfaces of the rotor cores, and magnet holders secured to the rotor cores, respectively, for holding the segment magnet. Ea... | 01/25/2011 |
| 7825623 | Electric vehicle drive apparatus In an electric vehicle drive apparatus having an electric motor and a motor drive device, the electric motor having a stator, a rotor and a moving mechanism capable of changing a relative distance between the stator and the rotor to vary an effective magnetic flux o... | 11/02/2010 |
| 7687957 | Magnet fixing structure for electric rotary machine Holder anchoring grooves are arranged on the outer periphery of a rotor core so as to extend axially. A holder arm having a substantially T-shaped cross section is fitted to each of the holder anchoring grooves. The holder arm has a main body section, an engaging pr... | 03/30/2010 |
| 7586275 | Wiper device control method, wiper device and motor with speed reduction mechanism A wiper device includes a sensor magnet fitted to an output shaft so that when wiper arms are positioned at upper reversal positions B relative to an origin position O, both hall ICs are opposed to an S-pole and when the wiper arms are positioned at lower reversal p... | 09/08/2009 |
| 7557484 | Electric motor In an electric motor having high-speed and low-speed brushes, durability is improved and vibration/noise is reduced. The electric motor has a low-speed brush 21a, a high-speed brush 21b, and a common brush 21c. Formed in the... | 07/07/2009 |
| 7545122 | Control method of generator When drive control of a generator is performed, PWM control of a switching circuit comprising an FET and a diode connected to the opposite ends of a winding is performed. In the vicinity of a moment in time Lmax where the winding has a maximum inductance L, an alter... | 06/09/2009 |
| 7500918 | Shaft member provided with a plurality of ridges on an outer circumferential surface thereof A plurality of axial grooves are formed on the outer circumferential surface of a shaft member by applying an arcuate edge defined between an end surface and outer circumferential surface of a rotatable cylindrical forming tool having a generally smooth surface. Typ... | 03/10/2009 |
| 7486038 | Motor control method and motor control system In a PWM-controlled motor, a motor rotation frequency f, lock determination frequency d, and power supply voltage E are acquired (S1 to S3). The d is compared to the f (S4). When f is not less than that of d, Max.Duty is calculated by the follow... | 02/03/2009 |
| 7406377 | Vehicle-use automatic opening/closing device When a slide door stops at an intermediate position over a protection action time start time (Tβ), an electric motor is operated in closing direction in low driving force mode. When the move speed (Vc) of the slide door is a movable speed (Vα) or higher, the slide... | 07/29/2008 |
| 7400153 | Detector with capacitance sensor for detecting object being caught by door A detector for detecting an object that may be feared to or about to be caught by a closing door such as a slide door of a vehicle incorporates a capacitance sensor with a directionality characteristic in the direction of its detection surface. The detector has a ma... | 07/15/2008 |
| 7393044 | Vehicle door opening and closing structure A slider is provided on a rear door so as to be able to freely reciprocated, and the slider is connected to a vehicle body through a control arm and a driven arm. A linear cam groove and a curved cam groove continuous to the linear cam groove are formed in a guide p... | 07/01/2008 |
| D571705 | Windshield wiper | 06/24/2008 |
| 7385367 | Motor control method and motor controller A motor speed, duty, and power source voltage are detected (steps S1 to S3). Referring to a load point map, a load point value is obtained (steps S4 and S5). The load point map is created with the motor speed, duty, and power source volta... | 06/10/2008 |
| D568801 | Windshield wiper | 05/13/2008 |
| 7362031 | Electric motor An electric motor has an armature rotatably accommodated inside a motor housing and a pair of magnets fixed to an inner surface of the motor housing so as to face the armature. The armature has an armature core 17 fixed to a rotating shaft 16, and ten ... | 04/22/2008 |
| 7328934 | Sliding door opening and closing device There is provided a sliding door opening and closing device that improves layout flexibility of a driving unit in a self-propelled sliding door opening and closing device in which the driving unit is disposed on a sliding door side and that can protect a cable membe... | 02/12/2008 |
| 7292012 | Control method of generator When drive control of a generator is performed, PWM control of a switching circuit comprising an FET and a diode connected to the opposite ends of a winding is performed. In the vicinity of a moment in time Lmax where the winding has a maximum inductance L, an alter... | 11/06/2007 |
| 7262528 | Motor unit including integrated motor and speed reduction mechanism In a motor unit integrating a motor and a drive control section, the drive control section has a stack structure in which two circuit component containing sections are arranged three-dimensionally with a bus bar being arranged between both containing sections. A pri... | 08/28/2007 |
| 7254862 | Wiper blade A holder piece assembly having holder pieces continuously arranged and leaf spring members connecting between each holder piece, and being curved in the longitudinal direction by elastic force of elastic members is provided. The holder piece assembly is mounted on t... | 08/14/2007 |
| 7218120 | Fault detection circuit for a driver circuit Various component parts of a driver circuit for drive sources such as electric motors and clutches, such as relays and FETs as well as the drive sources can be tested by selectively energizing the relays and evaluating the voltage levels of the selected points by us... | 05/15/2007 |
| 7187093 | Terminal connection part structure of electric motor with speed reduction mechanism A connection part between brush side terminals and power side terminal pieces is disposed at either of positions L and R located laterally next to an axis of a motor and opposed to each other with respect to the axis. Both terminals are connected to each other throu... | 03/06/2007 |
| 7174674 | Automatic opening/closing device for vehicle The invention improves accuracy of engagement of a pinion and a rack with each other in an automatic opening/closing device for a vehicle. In the automatic opening/closing device for the vehicle and for automatically opening and closing an opening/closing member pro... | 02/13/2007 |
| D530344 | Core plate of electric rotating machine | 10/17/2006 |
| 7078846 | Rotary actuator and method of controlling an actuator A piezoelectric drive body is secured to a shaft that is rotatably supported by a holder. A leaf spring is fastened to the upper end of the holder and is in resilient contact with the upper end of the shaft. Friction between the shaft and the leaf spring acts as a r... | 07/18/2006 |
| 7069695 | Automatically opening/closing apparatus for vehicle An automatically opening/closing apparatus for vehicle of rack-and-pinion type is reduced in size and weight. The automatically opening/closing apparatus for vehicle is automatically opened/closed, by transmitting rotation of an electric motor to a back door through... | 07/04/2006 |
| 7038348 | Dynamo electric machine A dynamo-electric machine comprises a stator having a plurality of salient poles wound with a coil, and a rotor fixed with a plurality of permanent magnets and disposed to rotate freely on an outer circumference of the stator. Salient poles becoming in-phase are arr... | 05/02/2006 |
| 6989616 | Motor A circuit-container unit 22 has a structure in which a board 26, electric components 27 constituting a drive control circuit 24, a frame 28 made of synthetic resin, an insulating plate 29 made of synthetic resin, a shield pl... | 01/24/2006 |
| 6979091 | Door mirror set plate A door mirror set plate is formed of synthetic resin. On a base plate, a support shaft is vertically provided to rotatively support a door mirror body. A curved surface section is embedded at an outside periphery of a base of the support shaft. A flat section is for... | 12/27/2005 |
| 6977453 | Electric rotating machine provided with a field control coil In a rotating electric machine using permanent magnets and a field control coil, to allow the properties of the rotating electric machine to be readily changed and the rotating electric machine to be adapted to various applications even when it is made of common com... | 12/20/2005 |
