Abstract: A plurality of exhaust holes (4f) for exhausting compressed air to the outside of a case body (4) are drilled at a bottom portion of a second flowing path (4e) in a circumferential direction at prescribed intervals in an annular blowing path (8) formed by combining a first case (4a) and a second case (4b) around an outer side in a radial direction of the case body (4), and a diffuser (4r) inclined diagonally downward with respect to a rotation direction of a centrifugal fan (2) is provided at a position facing respective exhaust holes (4f).

Abstract: A plurality of exhaust holes (4f) for exhausting compressed air to the outside of a case body (4) are drilled at a bottom portion of a second flowing path (4e) in a circumferential direction at prescribed intervals in an annular blowing path (8) formed by combining a first case (4a) and a second case (4b) around an outer side in a radial direction of the case body (4), and a diffuser (4r) inclined diagonally downward with respect to a rotation direction of a centrifugal fan (2) is provided at a position facing respective exhaust holes (4f).

Abstract: A rotational position detection device includes: an FG magnet rotating together with a rotor and having N poles and S poles alternately magnetized at even intervals in a circumferential direction around a rotation axis of the rotor; and a printed circuit board on which an FG pattern facing the FG magnet is formed such that an induced voltage is generated by rotation of the FG magnet, wherein the FG pattern includes patterns electrically separated from each other on the printed circuit board, and the patterns differ from each other by an electrical angle excluding an integral multiple of 180 degrees in electrical angle.

Abstract: The permanent magnet rotor is capable of making tolerance of attaching a magnet cover great, applying no stress to structural elements of the rotor, preventing the magnet cover from being damaged under an environment where thermal expansion and thermal contraction are repeated in response to temperature variation, and preventing scatter of magnets. The permanent magnet rotor of an inner rotor-type motor comprises: a rotor yoke; a plurality of permanent magnets being arranged on an outer circumferential face of the rotor yoke, the permanent magnets constituting a plurality of segments; and a ring-shaped magnet cover covering outer faces of the permanent magnets, the magnet cover being composed of a nonmagnetic material. An inner diameter of the magnet cover before covering the outer faces of the permanent magnets is smaller than an outer diameter of the circularly-arranged permanent magnets.

Abstract: The present invention provides the actuator, which is capable of preventing biased abrasion by lowering a surface pressure at a contact portion of a movable element with a guide surface and increasing a movable range, in which a specified output force can be gained. Magnetic resistance of at least one of the surfaces (Y1, Y2) of first and second yoke parts (5, 6) corresponding to peripheral surfaces (P1, P2) of a plunger (7), on which magnetic flux acting surfaces are formed by energization, is unbalanced in the circumferential direction so as to act a resultant force of magnetic forces acting on the movable element in the radial direction eccentrically to a radial one end (E1) side.

Abstract: The present invention provides the actuator, which is capable of preventing biased abrasion by lowering a surface pressure at a contact portion of a movable element with a guide surface and increasing a movable range, in which a specified output force can be gained. Magnetic resistance of at least one of the surfaces (Y1, Y2) of first and second yoke parts (5, 6) corresponding to peripheral surfaces (P1, P2) of a plunger (7), on which magnetic flux acting surfaces are formed by energization, is unbalanced in the circumferential direction so as to act a resultant force of magnetic forces acting on the movable element in the radial direction eccentrically to a radial one end (E1) side.

Abstract: The present invention provides the actuator, which is capable of increasing a moving range of a movable element in which a specified output force can be gained by reducing variation of a thrust force caused by stroke amount. Either of peripheral surfaces (P1, P2) of a plunger (7), on which magnetic flux acting surfaces are formed by energization, and first and second yoke parts (5, 6) corresponding to the peripheral surfaces (P1, P2) of the plunger (7) have configurations capable of gradually varying magnetic resistance according to movement of the plunger (7).