Abstract: A motor according to an embodiment includes a shaft as a rotation axis, a rotor, a bearing, and a spring member. The rotor is fixed to the shaft. The bearing is disposed opposite to the rotor in the rotation axis direction and rotatably supports the shaft. The spring member is disposed between the rotor and the bearing and includes a first end portion fixed to the rotor.

Abstract: Provided is a motor rotor having a magnet attachment structure that can be used in a severe environment, for example. A motor rotor comprises: a rotary shaft; an annular magnetic body; a metal member; and an annular magnet that surrounds the magnetic body. The magnetic body has two surfaces that face each other in the rotary shaft direction, and a protruding part that protrudes from one surface of the two surfaces in the rotary shaft direction. The protruding part surrounds the rotary shaft. The magnet has two surfaces that face each other in the rotary shaft direction. The metal member is disposed on one surface of the magnet. The metal member surrounds the protruding part. The metal member is interposed between the protruding part and the one surface of the magnetic body.

Abstract: A motor according to an embodiment includes a shaft as a rotation axis, a rotor, a bearing, and a spring member. The rotor is fixed to the shaft. The bearing is disposed opposite to the rotor in the rotation axis direction and rotatably supports the shaft. The spring member is disposed between the rotor and the bearing and includes a first end portion fixed to the rotor.

Abstract: Provided is a motor rotor having a magnet attachment structure that can be used in a severe environment, for example. A motor rotor comprises: a rotary shaft; an annular magnetic body; a metal member; and an annular magnet that surrounds the magnetic body. The magnetic body has two surfaces that face each other in the rotary shaft direction, and a protruding part that protrudes from one surface of the two surfaces in the rotary shaft direction. The protruding part surrounds the rotary shaft. The magnet has two surfaces that face each other in the rotary shaft direction. The metal member is disposed on one surface of the magnet. The metal member surrounds the protruding part. The metal member is interposed between the protruding part and the one surface of the magnetic body.

Abstract: A rotating device is provided with: a hub that is rotatably supported by the base and on which a recording disk is to be mounted; a yoke that is fixedly provided on the hub and is configured to hold a magnet; a bearing unit in which one end thereof is fixedly provided on the base and in which the other end thereof is configured to hold the hub; and a coil that is fixedly provided on the base and is configured to generate electromagnetic interaction with the magnet. The hub has a screw hole in which a screw for fixing a clamper, which is used to fix the recording disk to the hub, to the hub is screwed. The screw hole penetrates the hub. The yoke is configured such that the yoke covers one end of the screw hole.

Abstract: A rotating device comprises: a rotor comprising: a hub on which a magnetic recording disk is to be mounted; a shaft extending along a rotational axis of the hub, one side of the shaft being fixed to the hub; a flange surrounding the other side of the shaft, the flange being fixed to the shaft; and a shaft support member surrounding the shaft and rotatably supporting the shaft. A lubricant agent is interposed between the shaft and the shaft support member. The gas-liquid interface of the lubricant agent is provided in a gap between the shaft and the shaft support member. The hub includes a surrounding portion which surrounds the shaft support member. A gap defined between the surrounding portion and the shaft support member communicates with the gas side of the gas-liquid interface. The gap thus defined is positioned radially inward from the outer face of the flange.

Abstract: In a rotating machine, a recording disk is mounted on a hub. A base rotatably supports the hub through a bearing unit. A core is fixed to the base and includes an annular portion and a salient pole radially extending therefrom. A coil is formed by winding a wire around the salient pole. The wire is pulled out to the back surface of the base through a pull-out hole provided in the base and soldered to a wiring.

Abstract: A rotating device is provided with: a hub that is rotatably supported by the base and on which a recording disk is to be mounted; a yoke that is fixedly provided on the hub and is configured to hold a magnet; a bearing unit in which one end thereof is fixedly provided on the base and in which the other end thereof is configured to hold the hub; and a coil that is fixedly provided on the base and is configured to generate electromagnetic interaction with the magnet. The hub has a screw hole in which a screw for fixing a clamper, which is used to fix the recording disk to the hub, to the hub is screwed. The screw hole penetrates the hub. The yoke is configured such that the yoke covers one end of the screw hole.

Abstract: In a rotating device, a housing includes a cylindrical outer surface facing an inner surface of a through hole and a guiding surface arranged on the underside of the outer surface, the diameter of the guiding surface being less than the diameter of the outer surface. Glue has an interface in an end space. In at least a part of the end space where the glue does not exist, conductive resin seamlessly is applied from the guiding surface to the inner surface of the through hole. With regard to a portion of the inner surface of the through hole that radially faces the guiding surface, the length, in the axial direction, of the portion that touches the conductive resin is greater than the length, in the axial direction, of the portion that touches the glue.

Abstract: In a rotating device, a housing includes a cylindrical outer surface facing an inner surface of a through hole and a guiding surface arranged on the underside of the outer surface, the diameter of the guiding surface being less than the diameter of the outer surface. Glue has an interface in an end space. In at least a part of the end space where the glue does not exist, conductive resin seamlessly is applied from the guiding surface to the inner surface of the through hole. With regard to a portion of the inner surface of the through hole that radially faces the guiding surface, the length, in the axial direction, of the portion that touches the conductive resin is greater than the length, in the axial direction, of the portion that touches the glue.

Abstract: In a rotating machine, a recording disk is mounted on a hub. A base rotatably supports the hub through a bearing unit. A core is fixed to the base and includes an annular portion and a salient pole radially extending therefrom. A coil is formed by winding a wire around the salient pole. The wire is pulled out to the back surface of the base through a pull-out hole provided in the base and soldered to a wiring.

Abstract: A bearing device is composed of a shaft, a sleeve for supporting the shaft so as to be rotatable freely and a housing having a through hole into which the sleeve is inserted. A circumferential groove that extends in a circumferential direction is formed on either one surface of an outer circumferential surface of the sleeve and an inner circumferential surface of the housing. An axial groove that extends approximately in parallel to a central axis of the sleeve is formed on either one surface of the outer circumferential surface of the sleeve and the inner circumferential surface of the housing. The outer circumferential surface of the sleeve is glued to the inner circumferential surface of the housing by adhesive that intervenes in both the circumferential groove and the axial groove.

Abstract: One embodiment of the present invention provides a motor comprising a stator portion including a bearing using lubricant oil; and a rotor portion having a rotation shaft rotatably supported by the bearing, an oil deflector configured to return back to the bearing the lubricant oil that has leaked toward one end portion of the rotation shaft from the bearing, and a hub attached so as to oppose the oil deflector with a clearance therebetween.

Abstract: A bearing device is composed of a shaft, a sleeve for supporting the shaft so as to be rotatable freely and a housing having a through hole into which the sleeve is inserted. A circumferential groove that extends in a circumferential direction is formed on either one surface of an outer circumferential surface of the sleeve and an inner circumferential surface of the housing. An axial groove that extends approximately in parallel to a central axis of the sleeve is formed on either one surface of the outer circumferential surface of the sleeve and the inner circumferential surface of the housing. The outer circumferential surface of the sleeve is glued to the inner circumferential surface of the housing by adhesive that intervenes in both the circumferential groove and the axial groove.

Abstract: A motor having improved mechanism is composed of a body of revolution having a mounting hole in the center of the body; a rotor hub having a boss section to be inserted into the mounting hole of the body of revolution and a flange section supporting the body of revolution; and an elastic plate installed coaxially to the rotor hub and pressing the body of revolution on the flange section of the rotor hub, wherein the elastic plate is provided with a plain section having a hole in the center and a plurality of arm sections extending radially from an outer circumference of the plain section, and wherein each of the arm sections is provided with a first slanting section that is inclined with respect to the plain section and a second slanting section having an angle of gradient different from that of the first slanting section, and further wherein the first slanting section contacts with an outer circumferential edge of the boss section that confronts with an inner wall surface of the mounting hole of the body of

Abstract: One embodiment of the present invention provides a motor comprising a stator portion including a bearing using lubricant oil; and a rotor portion having a rotation shaft rotatably supported by the bearing, an oil deflector configured to return back to the bearing the lubricant oil that has leaked toward one end portion of the rotation shaft from the bearing, and a hub attached so as to oppose the oil deflector with a clearance therebetween.