Abstract: An insulator attached to a core body in an annular shape and multiple teeth protruding from the core body along a radial direction for insulating the teeth and a coil wound around the teeth includes: a tooth end surface covering part covering an axial end surface of the tooth. The tooth end surface covering part includes: an inclined part provided on a front surface of the tooth end surface covering part on a side opposite to the tooth and inclined such that its height from the axial end surface of the tooth gradually changes along the radial direction; and an inclined part parallel part and a tooth parallel part provided on a back surface of the tooth end surface covering part on the tooth side and concave in a direction away from the axial end surface of the tooth.

Abstract: A rotor core includes: a plurality of salient poles that protrude outward in a radial direction from a rotor core main body portion and are arranged between magnets which are adjacent to each other in a circumferential direction, a holder includes: an annular portion that is arranged to overlap an end surface in an axial direction of the rotor core main body portion; and a leg portion that protrudes outward in a radial direction from the annular portion and is arranged to overlap an end surface in an axial direction of the salient poles, and a press fit rib in which a magnet cover is pressed into the leg portion is provided on an outer end section in a radial direction of the leg portion.

Abstract: A motor control device includes a driving control part and an upper limit value setting part. The driving control part controls motor driving by switching between a first driving mode and a second driving mode, and controls an output duty ratio so as not to exceed a duty ratio upper limit value. The upper limit value setting part sets, as the duty ratio upper limit value, a low rotation duty ratio upper limit value, a maximum duty ratio upper limit value corresponding to a maximum output value, and an upper limit value of a transition period from the low rotation duty ratio upper limit value to the maximum duty ratio upper limit value, and changes slope information indicating a change amount in the upper limit value of the transition period according to the driving mode when switching between the first driving mode and the second driving mode.

Abstract: A rotor is provided with: a rotor core (32); a plurality of permanent magnets (33); a substantially tubular magnet cover (71); and a load reception block (70). The rotor core (32) rotates integrally with a rotary shaft of a motor. The permanent magnets (33) are arranged on the outer peripheral part of the rotor core (32). The magnet cover (71) covers the exterior of the plurality of permanent magnets (33) and the rotor core (32), and has a flange part which is bent radially inward at the end along a rotation axis. The load reception block (70) is disposed between the flange part and the end surface of the rotor core (32) in a direction along the rotation axis, and abuts against the flange part and the rotor core (32).

Abstract: A motor control device which controls a motor having an output shaft includes a vehicle speed detection part and a driving control part. The vehicle speed detection part detects a vehicle speed, which is a traveling speed of a vehicle mounted with the motor. Based on the vehicle speed detected by the vehicle speed detection part, the driving control part performs control of switching between a first driving mode which drives the motor, and a second driving mode in which a number of revolutions of the output shaft and an output of the motor are higher than in the first driving mode.

Abstract: Provided are a rotor, a motor, and a wiper motor. An arc center of an outer circumferential surface of a rotor core and an arc center of an inner circumferential surface of a permanent magnet are off-centered radially outward from a rotational axis, with the circumferential center disposed on the radially outermost side. An angle formed by salient pole side surfaces facing each other of circumferentially adjacent two salient poles is equal to an angle formed by magnet side surfaces on both sides circumferentially of the permanent magnet. When the distance between the outer circumferential surface of the rotor core and the radially outermost end of the salient poles is Lt, and the distance between the inner circumferential surface of the permanent magnet and the radially outermost end of the magnet side surfaces is Lme, the distances Lt, Lme are set such that the relationship Lme<Lt is satisfied.

Abstract: Provided is a motor including a stator and a rotor. The rotor includes a rotor core rotating integrally with an rotation shaft and having a core base end part fixed to the rotation shaft and core protrusions protruding outward in a radial direction from the core base end part; and a magnet disposed between the core protrusions adjacent to each other in a circumferential direction on an outer peripheral surface of the core base end part. A central position of the stator core in the axial direction, a central position of the rotor core in the axial direction, and a central position of the magnet in the axial direction are deviated from each other. The central position of the magnet in the axial direction is located between the central position of the stator core in the axial direction and the central position of the rotor core in the axial direction.

Abstract: A motor includes: a stator having teeth protruding radially inward from the inner peripheral surface of a stator core; coils wound on the teeth; a shaft rotating on the inside radially of the stator core; a rotor core affixed to the shaft and radially centered on the rotation axis of the shaft; permanent magnets arranged on the outer peripheral surface of the rotor core; projecting poles which are formed projecting radially outward between the permanent magnets adjacent to each other in the circumferential direction of the outer peripheral surface of the rotor core, and with which the projecting contact surfaces of the permanent magnets are in contact. The stator is formed by stacking electromagnetic steel sheets in the direction of the rotation axis of the shaft. At least one of the axial ends of each of the permanent magnets projects further than an axial end of the rotor core.

Abstract: The invention reduces the stoppage of operation due to a sudden decrease in rotation speed. A motor device includes a motor that is rotationally driven; a drive signal generator that controls a duty ratio indicating a drive output of the motor so as not to exceed a duty ratio upper limit value, and generates a drive signal corresponding to the duty ratio; an inverter that outputs an output signal for rotationally driving the motor based on the drive signal; a rotation speed detector that detects a rotation speed of the motor; an acceleration detector that detects whether the motor is accelerating; and an upper limit value setting part that changes the duty ratio upper limit value to a second upper limit value higher than a preset first upper limit value in response to rotation of the motor being accelerating.

Abstract: Provided are a motor with which dynamic unbalance of a rotor can be suppressed, and a deterioration in the motor characteristics can be reduced, and a method for manufacturing said motor. In a motor unit: a rotor central position, a magnet central position, and a stator central position are offset from one another; a length L1 between inner wall surfaces, facing one another in an axial direction, of magnet holders, an axial direction magnet length L2 of magnets, and an offset length L3 satisfy L1?L2<L3; and first and second holder lengths Lh are the same.

Abstract: A motor device includes a motor having three-phase windings; a rotation speed detector detecting a rotation speed of the motor; a drive signal generator controlling a duty ratio not to exceed a duty ratio upper limit value, and performing control for an energization angle of each phase and performing advance angle control shifting the phase from a reference position to generate a drive signal corresponding to the duty ratio; and an inverter supplying alternating current to the windings based on the drive signal. The drive signal generator includes an advance angle/energization angle controller changing the energization angle to 120 degrees or less while performing advance angle control when the duty ratio is equal to or greater than the duty ratio upper limit value and the rotation speed is equal to or less than a predetermined threshold value in a state where the energization angle is greater than 120 degrees.

Abstract: An insulator, a stator, and an electric motor capable of improving molding accuracy and assemblability are provided. An insulator 26 includes a first insulator 61 and a second insulator 62 to be attached from both axial sides of a stator core. The first insulator 61 has a first core end surface covering portion 65 and a first skirt portion 79. The second insulator 62 has a second core end surface covering portion 265 and a second skirt portion 279. The insulator 26 includes a coil lead-out portion 77 provided integrally with only the first core end surface covering portion 65 for leading out terminal portions of coils from the first insulator 61 to the outside. A length of the longest portion of the second skirt portion 279 in the axial direction is greater than a length of the longest portion of the first skirt portion 79 in the axial direction.

Abstract: A motor control device includes: a plurality of sensors detecting a rotation position of a rotor and outputting a position detection signal; a rotational speed determination part determining whether a rotational speed of a brushless motor is equal to or less than a predetermined threshold value based on the position detection signal; and a motor control part. An energization control part included in the motor control part uses, between a first mode and a second mode, different sensor signals serving as a trigger for an energization timing of each phase. In the first mode, an energization timing to a second phase is advanced relative to a timing at which the position detection signal of a first sensor turns on. In the second mode, an energization timing to the second phase is retarded relative to a timing at which the position detection signal of the first sensor turns on.

Abstract: An advance angle correction method of a motor device includes: acquiring first advance angle correction information indicating a correspondence relationship between an advance angle correction amount and a rotation speed difference of a rotor of the motor calculated in advance based on a rotation speed change rate; measuring the rotation speed difference of the rotor; calculating a first advance angle correction amount for each rotation direction of the rotor as a first forward rotation advance angle correction amount and a first reverse rotation advance angle correction amount so that a rotation speed difference of an output shaft becomes smaller based on the first advance angle correction information and the rotation speed difference of the rotor; and storing the calculated first forward rotation advance angle correction amount and the first reverse rotation advance angle correction amount as advance angle correction information for each motor device.

Abstract: Provided are a winding device and a motor A nozzle that feeds out a coil has: a nozzle hole from which the coil is fed out; an inner-diameter round chamfered part formed on an opening edge of a tip of the nozzle; an outer-diameter round chamfered part formed on the outer peripheral edge of the tip of the nozzle. When the wire diameter of the coil is defined as ?c, the inner diameter of the nozzle hole is defined as ?in, the radius of curvature of the inner-diameter round chamfered part is defined as Rin, and the radius of curvature of the outer-diameter round chamfered part is defined as Rout, they satisfy 1.2?c??in?1.4?c, 0.5?c?Rin??c, and 0.25?c?Rout?0.5?c.

Abstract: The motor comprises: a stator around which coils are wound and which forms a rotating magnetic field rotating a rotor; and a first motor case housing the stator. The stator has: a core body portion forming an annular magnetic path; and a fastening portion projecting outside in the radial direction from the outer circumferential surface of the core body portion. The fastening portion has an attachment hole which is formed in a penetrating manner along the rotating axis line direction of the rotor and into which a fastening screw for fixing the stator to the first motor case is inserted. The first motor case has: first to third core receiving portions receiving an end portion of the core body portion in the rotating axis line direction; and first and second fastener receiving portions receiving an end portion of the fastening portion in the rotating axis line direction.

Abstract: In a brushless motor including a stator core and a rotor which rotates with respect to the stator core, a coil support wall supports a coil wound around a core main body part from a radially inner side of the core main body part. A first wall part and a second wall part constituting the coil support wall are connected to each other at an angle at a portion of a tooth tip part protruding from a tooth main body part along a circumferential direction of the core main body part, and a thickness dimension of the second wall part is equal to or larger than a thickness dimension of the first wall part along a radial direction of the core main body part.

Abstract: An object of the present invention is to provide a lyophilized formulation having improved storage stability of hepatic growth factor compared to conventional lyophilized formulations. The present invention provides a lyophilized formulation comprising (1) a hepatic growth factor, (2) trehalose and (3) one or more compounds selected from the group consisting of arginine, histidine, lysine, meglumine, glutamic acid, aspartic acid, proline, creatine, creatinine, tris(hydroxymethyl)aminomethane, and pharmaceutically acceptable salts thereof.

Abstract: A motor control device includes: a plurality of sensors detecting a rotation position of a rotor and outputting a position detection signal; a rotational speed determination part determining whether a rotational speed of a brushless motor is equal to or less than a predetermined threshold value based on the position detection signal; and a motor control part. An energization control part included in the motor control part uses, between a first mode and a second mode, different sensor signals serving as a trigger for an energization timing of each phase. In the first mode, an energization timing to a second phase is advanced relative to a timing at which the position detection signal of a first sensor turns on. In the second mode, an energization timing to the second phase is retarded relative to a timing at which the position detection signal of the first sensor turns on.

Abstract: The motor is provided with: a rotor core; permanent magnets disposed on the outer circumferential surface of the rotor core and magnetized in parallel orientation; and a salient pole saliently formed between the permanent magnets. The ratio of the number of magnetic poles of the permanent magnets to the number of teeth is 2:3. Sloped surfaces are formed on the side surfaces of the permanent magnets in the circumferential direction. The angle ?2 between lines L3 and lines L2 is an electrical angle of 13° or more, said lines L3 connecting outer circumferential corner portions where the sloped surfaces and the outer circumferential surface are connected to each other and the shaft center, said lines L2 connecting the radial direction outermost side of the circumferential side surface of the salient pole and the shaft center.