Abstract: A fan motor is provided that prevents restraint on a rotor in an environment where oil and dust are floating in the air. The fan motor includes a stator constituted of an armature having a winding thereon, a rotor constituted of an excitation unit including a permanent magnet, and a vane wheel fixed to the rotor and including a plurality of vanes. The vanes or the vane wheel are formed so as to generate airflow from the side of a frame boss toward a hub unit of the vane wheel.

Abstract: A housing of a fan motor according to the invention includes: board members provided at an interval in a rotational axis direction of a fan; a coupling portion which couples the board members to each other; a protrusion portion which is protruded toward a space other than an air course from the coupling portion, the space being between the board members other than the air courses; and a fixing portion which fixes a terminal that is provided in the protrusion portion and is connected to a wiring from a power source that supplies electricity to a motor. Other member, which crosses in an extending direction of the terminal from the protrusion portion to an edge portion of the board member, is not provided.

Abstract: A motor rotator includes: a rotor shaft configured to be journaled to a pair of bearing members of a motor device; and a rotor stack that includes a plurality of lamination plates and a plurality of small-diameter plates having an outer diameter smaller than an outer diameter of the lamination plates, the lamination plates and the small-diameter plates being stacked in an axial direction of the rotor shaft and integrated. The plurality of small-diameter plates forms a pair of bosses, the pair of bosses projecting from both sides of the plurality of lamination plates along the axial direction of the rotor shaft to abut on the pair of bearing members.

Abstract: An axial blower includes: a housing including a wind tunnel; an impeller that is disposed in the wind tunnel and includes a plurality of blades; and a motor that includes a rotation shaft and is secured to the housing, the impeller being secured to the rotation shaft. When an angle between a chord of the blade at a cross-sectional surface of the blade cut by a virtual cylindrical surface centering the rotation shaft, and a surface perpendicular to the rotation shaft is defined as a mounting angle, the blade includes an intermediate part between an inside diameter side part and an outside diameter side part of the blade, and this intermediate part has a mounting angle equal to or larger than a mounting angle of the inside diameter side part, and larger than a mounting angle of the outside diameter side part.

Abstract: A stator includes: a stator core having an annular portion and a plurality of teeth that is radially protruded outward from an outer periphery of the annular portion; a molded coil that has an air-core portion into which the teeth of the stator core are inserted and that is stored in a slot formed between the teeth of the stator core; and a yoke that covers a circumference of the molded coil stored in the slot of the stator core. The molded coil has an arc-shaped cross-section, and the molded coil includes a resin-molded portion and an exposed portion exposed at the molded portion.

Abstract: A magnetic shield cover for an encoder of magnetic detection type includes a soft magnetic section and a non-magnetic section. The soft magnetic section is formed to cover a magnetic detection element and a magnet and has an opening for avoiding a situation that a part of the soft magnetic section prevents a magnetic field from the magnet from passing through the magnetic detection element. The non-magnetic section is provided in the opening of the soft magnetic section.

Abstract: A bidirectional axial fan device includes: a moving blade member with a plurality of vanes; and a casing that includes a mounting portion, a frame, and a plurality of spokes, a motor being mounted to the mounting portion, the frame forming a ventilation hole. The plurality of spokes couple the mounting portion to the frame at an exhaust air side during a normal rotation of the motor. An inner peripheral surface of the frame has a multiple stage shape, in which a part on the exhaust air side during the normal rotation has a diameter larger than a diameter of a part on an air intake side during the normal rotation, such that intervals between tops on the exhaust air side during the normal rotation at outer peripheral edges of the plurality of vanes and the inner peripheral surface of the frame are expanded.

Abstract: The inductor type rotary motor of m-phase (m represents an integer of 2 or more) includes a stator in which distal ends of teeth are circularly disposed, and a rotor having an inductor tooth that faces each of the distal ends of the teeth through a constant gap. The stator includes k·m teeth (k represents an integer of 1 or more), at least one permanent magnet is disposed at each of the teeth, and adjacent permanent magnets, which belong to teeth adjacent to each other, are disposed in such a manner that different polarities face each other.

Abstract: A linear motor includes a field core, a stator that includes a plurality of permanent magnets disposed on the field core, and an armature core that includes an armature winding wire, the armature core being disposed via a magnetic void with the permanent magnets. Assuming that a length of the armature core in a traveling direction of the linear motor is Lc, a pitch of the permanent magnets is ?p, and N is a natural number, the length Lc of the armature core is specified by (N×?p?0.2×?p)?Lc?(N×?p+0.2×?p).

Abstract: A linear motor includes a stator, a mover that moves a subject to be moved linearly along the stator, and a multi-member spacer that is interposed between the mover and the subject to be moved. The stator includes a plurality of permanent magnets, the mover includes a plurality of coils arranged to be opposed to the permanent magnets, and the multi-member spacer includes two or more members different in thermal conductivity.

Abstract: A stepper motor includes: a rotor including a rotor core and a permanent magnet, the rotor core including a plurality of teeth; and a stator arranged around the rotor while being spaced apart from the rotor and including a plurality of magnetic pole teeth, the magnetic pole teeth including a plurality of teeth and projecting toward the rotor. A winding is wound around every other magnetic pole tooth. A phase of the teeth of the magnetic pole teeth with no winding therearound is shifted from a phase of the teeth of the other magnetic pole teeth.

Abstract: A measurement device includes: a casing that includes a first air duct with an air inlet; a straightening grid; a first chamber; an opening plate including an opening; a second chamber; pressure sensors configured to measure a first pressure, a second pressure, and a third pressure, the first pressure being air pressure from the air inlet to the straightening grid, the second pressure being air pressure in the first chamber, the third pressure being air pressure in the second chamber; a specific opening configured to allow the opening plate to be replaceable; an open/close portion configured to open and close the specific opening; and a duct forming a second air duct between the measurement device and a measurement target.

Abstract: A fan casing includes: an air duct communicating with an air inlet and outlet; a frame body forming an outer peripheral surface of the air duct; a hub portion forming an inner peripheral surface of the air duct on the outlet side; and a stator blade portion provided in the air duct, the stator blade portion coupling the frame body to the hub portion. The hub portion includes a cylindrical-shaped cylindrical portion and a tapered portion provided next to the cylindrical portion and provided in such a manner as to increase the width of the air duct toward the outlet. The stator blade portion couples the cylindrical portion to the frame body.

Abstract: A three-phase electromagnetic motor includes: a stator that is formed by winding a winding around a magnetic pole formed between slots of a stator core; and a rotor that is disposed inside the stator and has a permanent magnet. The three-phase electromagnetic motor is formed of 8n poles and 6n slots (n is a natural number). 3n windings are wound around every other magnetic pole among a plurality of magnetic poles of the stator core.

Abstract: Provided is a method for manufacturing a permanent magnet type motor in which a permanent magnet is incorporated into a rotor cores stack, the method including a process of forming the rotor core stack, by combining a plurality of core sheets having a magnet insertion hole with a core sheet not having the magnet insertion hole, and disposing the core sheet not having the magnet insertion hole in one end of a stacking direction; a process of injecting a low-viscosity adhesive into the magnet insertion hole in which one end is blocked by the core sheets; and a process of bonding and fixing the permanent magnet by inserting the permanent magnet into the magnet insertion hole into which the low-viscosity adhesive is injected.

Abstract: A coil is wound via an electrically insulating member within a slot of a stator core of an electromagnetic motor which is formed of a stator and a rotor. Groove portions are formed to oppose one another in respective opposing portions of a slot opening portion side of the electrically insulating member. An electrically insulating sheet is disposed by being inserted into the pair of groove portions.

Abstract: A measurement device for measuring an airflow volume of a wind-blowing apparatus includes, a housing that includes an air duct with an air inlet and an air outlet, the air inlet being configured to take in air, the air outlet being configured to send out the taken air, an opening member installed inside the air duct, the opening member including an opening allowing the air taken from the air inlet to pass therethrough, pressure sensors configured to measure air pressures before and after the air passes through the opening member in the air duct, and an orifice provided on the opening member to change a size of the opening.

Abstract: In a rotor of a permanent magnet-embedded motor, a plurality of permanent magnets is arranged in one magnet housing of a rotor core. A rib portion which connects an outer peripheral portion of the rotor core with an inner peripheral portion of the rotor core is arranged per plurality of magnetic poles.

Abstract: A structure for attaching a cooling fan includes: a fan attachment plate interposed between a ventilation cover of a servomotor and the cooling fan and having a cut-out hole; and a tubular vibration-proof member supported by the cut-out hole of the fan attachment plate and fixed to the ventilation cover.

Abstract: An interior magnet linear induction motor includes an armature and a line of inductor teeth. The armature includes coils arranged between a plurality of teeth, and the line of inductor teeth is arranged so as to face the armature and includes a plurality of tooth portions arranged at a constant pitch in a linear stroke direction. An end portion of each of the plurality of teeth has a shape such that magnetoresistance of the tooth increases toward the root side. At least one permanent magnet is arranged at an end portion of each of the plurality of teeth and adjacent permanent magnets that are arranged at different teeth are magnetized such that opposite magnetic poles face each other.