Abstract: A linear head module includes linear motors each of which includes a movable element and a stator. The movable element includes a shaft having a shaft axis, and magnets fixed to the shaft. The stator includes a coil and a back yoke having a back yoke axis. The movable element is inserted into the back yoke movably along the shaft axis such that the shaft axis substantially coincides with the back yoke axis. The back yoke includes a protruding portion protruding outwardly. The coil is fixed to the back yoke to face the magnets. The linear motors are arranged such that the protruding portion of a first linear motor among the linear motors protrudes along a first protruding direction different from a second protruding direction along which the protruding portion of a second linear motor among the linear motors protrudes.

Abstract: A rotating electric machine includes a stator, a rotor, and a stator core. The stator core includes a plurality of teeth. Each of the teeth includes at least one of a through hole axially piercing the tooth and a recess extending from one end of the tooth to another end of the tooth in an axial direction.

Abstract: A rotating electric machine includes a stator, a rotor, and a stator core. The stator core includes a plurality of teeth. Each of the teeth includes at least one of a through hole axially piercing the tooth and a recess extending from one end of the tooth to another end of the tooth in an axial direction.

Abstract: A bobbin for electrically insulating the stator core from a coil wire to be wound around the bobbin includes: a coil winding portion around which the coil wire is to be wound; and a terminal fixing portion to which a winding starting end portion and a winding finishing end portion of the coil wire are to be fixed. The terminal fixing portion includes a first groove configured to guide a winding starting section extending from the winding starting end portion of the coil wire to a winding starting position of the coil winding portion and a second groove configured to guide a winding finishing section extending from a winding finishing position of the coil winding portion to the winding finishing end portion of the coil wire to intersect the winding starting section when seen in an axial direction.

Abstract: A rotating electric machine includes a stator, a rotor, and a stator core. The stator core includes a plurality of teeth. Each of the teeth includes at least one of a through hole axially piercing the tooth and a recess extending from one end of the tooth to another end of the tooth in an axial direction.

Abstract: A rotating electrical machine includes a toric stator and a rotator located inside or outside the stator. The stator includes a plurality of teeth radially extending from the center of a circle of the stator with equal gap, and the plurality of coils arranged in order and in layers by the winding wire being turned a plurality of times around the circumference of each of a plurality of teeth. The number of turns of the two respective coils arranged on the circumference of the two adjacent teeth is different.

Abstract: This disclosure discloses a rotating electric machine including a tubular frame and a stator core. The frame includes a bulged linear part on an inner peripheral surface. The bulged linear part has a shape extended linearly in an axial direction and bulged toward the inner periphery side. The stator core is fixed onto an inner periphery of the frame. The stator core includes a groove part fitted to the bulged linear part on an outer peripheral surface.

Abstract: A bobbin for electrically insulating the stator core from a coil wire to be wound around the bobbin includes: a coil winding portion around which the coil wire is to be wound; and a terminal fixing portion to which a winding starting end portion and a winding finishing end portion of the coil wire are to be fixed. The terminal fixing portion includes a first groove configured to guide a winding starting section extending from the winding starting end portion of the coil wire to a winding starting position of the coil winding portion and a second groove configured to guide a winding finishing section extending from a winding finishing position of the coil winding portion to the winding finishing end portion of the coil wire to intersect the winding starting section when seen in an axial direction.

Abstract: A rotating electric machine includes a stator and a rotor. The rotor includes an iron core and permanent magnets. The iron core includes a cylindrical connection portion and ten magnetic pole portions. The cylindrical connection portion surrounds a rotation shaft. The ten magnetic pole portions, the number of which corresponding to the number of poles, are disposed radially outside the connection portion. The connection portion and the magnetic pole portions are integrated with each other. The permanent magnets are disposed between the magnetic pole portions. The magnetic pole portions include flange portions that cover parts of radially outer surfaces of the permanent magnets while allowing at least parts of the radially outer surfaces to be exposed. Each of the permanent magnets includes a tapered portion in at least a part thereof, and the tapered portion has a length in a direction perpendicular to the radial direction that decreases radially inward.

Abstract: A rotating electrical machine includes a toric stator and a rotator located inside or outside the stator. The stator includes a plurality of teeth radially extending from the center of a circle of the stator with equal gap, and the plurality of coils arranged in order and in layers by the winding wire being turned a plurality of times around the circumference of each of a plurality of teeth. The number of turns of the two respective coils arranged on the circumference of the two adjacent teeth is different.

Abstract: A rotating electric machine includes a stator and a rotor. The rotor includes an iron core and permanent magnets. The iron core includes a cylindrical connection portion and ten magnetic pole portions. The cylindrical connection portion surrounds a rotation shaft. The ten magnetic pole portions, the number of which corresponding to the number of poles, are disposed radially outside the connection portion. The connection portion and the magnetic pole portions are integrated with each other. The permanent magnets are disposed between the magnetic pole portions. The magnetic pole portions include flange portions that cover parts of radially outer surfaces of the permanent magnets while allowing at least parts of the radially outer surfaces to be exposed. Each of the permanent magnets includes a tapered portion in at least a part thereof, and the tapered portion has a length in a direction perpendicular to the radial direction that decreases radially inward.