Abstract: A coil conductor of each of a U-phase, a V-phase, and a W-phase is provided with a configuration in which a terminal wiring conductor, a first tooth conductor wound around a first tooth, a bridging line conductor, a second tooth conductor wound around a second tooth, and a neutral-point connection conductor are connected in this order. The terminal wiring conductor is connected to the first tooth conductor at an upper side of an insulator. The bridging line conductor is disposed on an upper side of the insulator disposed on a stator core and along an outer side portion of a tooth of another phase. The neutral-point connection conductor is connected to the second tooth conductor at a lower side of the insulator.

Abstract: A brushless motor is provided that includes a stator assy and a rotor. The stator assy includes a stator, a housing that has a space where the stator is disposed, and an insulating resin disposed in the space. The insulating resin fixes the housing to the stator. The housing includes a first housing member and a second housing member. The insulating resin also fixes first housing member to the second housing member.

Abstract: A brushless motor is provided that includes a rotor, a stator, a bearing member, an attraction magnet, and a yoke. The rotor includes a shaft, a rotor yoke that holds the shaft and covers a peripheral surface of the shaft, and a magnet disposed around an outer periphery of the rotor yoke. The stator is disposed around an outer periphery of the rotor. An inner wall of a housing serving as a bearing member rotatably holds the shaft with a bearing. The attraction magnet is disposed at an end portion of the inner wall at which the rotor yoke holds the shaft, and produces an attraction force to attract the rotor yoke. The yoke supplements and enhances the attraction force produced by the attraction magnet.

Abstract: A spindle motor includes: a stator yoke having a circular cylinder shape; a rotor magnet disposed opposite to the stator yoke with an air gap therebetween; a sheet-like coil disposed at a surface of the stator yoke opposing the rotor magnet; and a bearing structure, wherein the sheet-like coil includes a plurality of individual coils having a spiral-shape and arrayed in a circumferential direction, and a pattern made of a same material as the individual coils and disposed between two adjacent individual coils.

Abstract: A spindle motor includes: a stator yoke having a circular cylinder shape; a rotor magnet disposed opposite to the stator yoke with an air gap therebetween; a sheet-like coil disposed at a surface of the stator yoke opposing the rotor magnet; and a bearing structure, wherein the sheet-like coil includes a plurality of individual coils having a spiral-shape and arrayed in a circumferential direction, and a pattern made of a same material as the individual coils and disposed between two adjacent individual coils.

Abstract: A reduced pressure or pressurizing pump is provided which can be used in a wide variety of fields of foods, pharmaceuticals, medical treatment, agriculture, healthcare equipment, room air conditioning, combustion, biotechnology, and so on. By the application of the pump of the present invention, there can be materialized, for example, an oxygen enriching apparatus or a nitrogen enriching apparatus, which have the features of an oil-free structure, a small size, compactness, low vibration, low noise, long operating life, and so on. A transport groove of a viscosity pump, which exerts a force feed action on the fluid, is formed at a relative displacement interface between a rotor and a housing, and the rotor supported by a bearing capable of coping with a high-speed rotation is rotated at a high speed.

Abstract: Provided is a reduced pressure or pressurizing pump which can be used in a wide variety of fields of foods, pharmaceuticals, medical treatment, agriculture, healthcare equipment, room air conditioning, combustion, biotechnology, and so on. By the application of the present pump, there can be materialized, for example, an oxygen enriching apparatus or a nitrogen enriching apparatus, which have the features of an oil-free structure, a small size, compactness, low vibration, low noise, long operating life, and so on. A transport groove of a viscosity pump, which exerts a force feed action on the fluid, is formed at a relative displacement interface between a rotor and a housing, and the rotor supported by a bearing capable of coping with a high-speed rotation is rotated at high speed.

Abstract: An electromagnetic vibrator includes a movable body producing vibration by revolving motion or reciprocating motion with respect to its center axis through being powered from the outside. The vibrator also includes an outer shell supporting the moving body and having two mounting faces, one being vertical and the other being parallel to the center axis. A portable device employs this electromagnetic vibrator. This structure allows the portable device to gain vibration in either direction, thereby increasing the versatility of the device. When a plurality of the electromagnetic vibrators are mounted to a device with their center axes in different directions or in the same direction, vertical and lateral vibrations can be produced at the same time, so that the device owns complex vibration modes and performs versatile functions.

Abstract: A small motor for use in an information-communication appratus, an audio-visual apparatus or the like, and a motor for use in a portable pager and a portable telephone or the like for generating vibrations to be transmitted to a human body, the motors being efficient, small and thin in size, and having a high degree of freedom when mounted on an apparatus. To realize the motor as described above, K pieces of (K indicating any integer greater than one) magnetic units (4a, 4b, 4c) having N and S poles magnetized alternately are mounted on a rotor in a circumferential direction, and K magnetic units are axially stacked in K stages and integrally retained on a shaft (6), and this rotor is rotatably supported on a pair of bearings (9a, 9b). Cores (1a, 1b, 1c) each have a salient pole (7a, 7b, 7c) wound around with coils (3a, 3b, 3c) in K stages so as to correspond to each of the magnetic units.

Abstract: In a coreless motor, a shaft of the coreless motor does not pass through a magnet but is arranged in series with a columnar magnet on the same axis. The magnet is inserted in a tubular frame made of magnetic material and a coil which is mounted on the shaft is inserted in the gap between the outer surface of the magnet and the inner surface of the frame.

Abstract: The present invention is directed to a flat brushless motor utilizable as a warning in a portable communication device. The center of gravity of the rotor assembly is displaced from the center of rotation so that, by the rotation of the unbalanced rotor assembly, vibrations can be generated and the. By elimination of an eccentric or the like for generating the vibrations, a manufacture in a flat and compact size, as well as a reduction in the number of component parts, can be attained.

Abstract: A flat brushless motor utilizable as a warning means in a portable communication device such as a pocket bell. The flat brushless motor is such that the center of gravity of the back-yoke (5a) is displaced from the center of rotation so that, by the rotation of the unbalanced back-yoke (5a), vibrations can be generated and, by the elimination of a weight or the like for generating the vibrations, the manufacture in a flat and compact size as well as the reduction in number of component parts can be attained.

Abstract: Fixed members of the small-sized motor centrifugal governor switch and commutator segment metals are secured to a boss of a molding insulating resin mounted on a shaft of the rotor, thereby disposing the centrifugal governor switch on the same side as the commutator with respect to the rotor. With this construction, there is no need of installing the centrifugal governor switch in the space radially centrally of the stator magnet, hence there is no need of restricting the size of the centrifugal governor switch to be smaller than the inner diameter of the stator magnet. Accordingly the centrifugal governor switch can be made larger, thereby securing a better function.

Abstract: A metal tube with outwardly bent risers for terminals is filled with a body of plastic resin which hardens in place. Then the tube is cut through, chordwise, a plurality of times to provide a plurality of segments. An extended, base portion of the plastic resin body through which the risers extend radially outwardly continues to hold the cylindrical disposition of the metal segments, with gaps maintained therebetween. A shaft is fitted coaxially in the base portion of the plastic resin body and extends through a larger diameter central bore of the body, centrally of the commutator segments. The gaps communicate with the annular space between this bore and the shaft, for cleaning out of particulate debris by centrifugal force.