Abstract: A stator has a core, an insulating member that covers the core, windings that are wound around the insulating member, and conductive members that supply drive power to the windings. The conductive member has a joining part that contacts a lower surface of the insulating member, an insertion part that rises axially upward from one end of the joining part, and a board connection part that descends axially downward from the other end of the joining part. The insertion part penetrates through the insulating member and protrudes at the top of the stator, where it is connected to a coil end. The board connection part is fixed, by a method such as press-fitting, to a circuit board on which a Hall element or the like is mounted.

Abstract: A stator has a core, an insulating member that covers the core, windings that are wound around the insulating member, and conductive members that supply drive power to the windings. The conductive member has a joining part that contacts a lower surface of the insulating member, an insertion part that rises axially upward from one end of the joining part, and a board connection part that descends axially downward from the other end of the joining part. The insertion part penetrates through the insulating member and protrudes at the top of the stator, where it is connected to a coil end. The board connection part is fixed, by a method such as press-fitting, to a circuit board on which a Hall element or the like is mounted.

Abstract: A motor comprises: a shaft; a permanent magnet rotor in which a permanent magnet and a gear member 32 are united; and a stator, arranged facing the permanent magnet. The gear member 32 has a pinion 33 and a mounting part 34. The mounting part 34 has: a circumferential-direction constraining part 34a, which constrains the circumferential movement of the permanent magnet; axial-direction constraining parts 34b, 34c, which abut both the top and bottom surfaces of the permanent magnet, so as to constrain the axial movement of the permanent magnet; and a plurality of elastic pieces 34d that apply a radially outward biasing force to the inner peripheral face of the permanent magnet.

Abstract: In a brushless motor having a rotor in which a drive magnet 43 and a position detection magnet 44 are fixed to the inside of a rotor case 44, along the axial direction, an annular separation plate 45 having positioning parts 45a and 45b for positioning these in the circumferential direction is disposed between the drive magnet 43 and the position detection magnet 44. Thereby, the magnetic influence of the drive magnet can be limited, and thus a highly reliable position detection signal can be obtained.

Abstract: A motor comprises: a shaft; a permanent magnet rotor in which a permanent magnet and a gear member 32 are united; and a stator, arranged facing the permanent magnet. The gear member 32 has a pinion 33 and a mounting part 34. The mounting part 34 has: a circumferential-direction constraining part 34a, which constrains the circumferential movement of the permanent magnet; axial-direction constraining parts 34b, 34c, which abut both the top and bottom surfaces of the permanent magnet, so as to constrain the axial movement of the permanent magnet; and a plurality of elastic pieces 34d that apply a radially outward biasing force to the inner peripheral face of the permanent magnet.

Abstract: A cover member has a through hole in the center. A rotary shaft protrudes upward from the through hole, without contact with the cover member. A first washer member, which is made from a hard material, is fastened to the rotary shaft, between the rotor case and the cover member. The first washer member is disposed without contact with the rotor case and the cover member.

Abstract: The bottom end of a rotary shaft contacts a cover part of a cover member, while the top end of the rotary shaft protrudes upwards from a retaining plate. A planar first washer member, which is made from a hard material, is fastened to the rotary shaft, between a bottom plate of a rotor case and an oil-impregnated bearing. The first washer member is disposed without contact with the bottom plate of the rotor case and the oil-impregnated bearing.

Abstract: A washer member 22a and a seal member 41a are disposed in a mutually non-contacting state in the axial direction. A rotary shaft 11 has an annular groove 11a in the outer circumferential face. A minimum diameter part 11a3 of the annular groove 11a is disposed between the uppermost surface of the washer member 22a and the lowermost surface of the seal member 41a. The upper end of the annular groove 11a is disposed axially below the uppermost surface of the seal member 41a. The outer surface of the seal member 41a and the outer circumferential face of the rotary shaft 11 that faces the seal member 41a in the radial direction are subjected to oil-repellent treatment.

Abstract: A cover member has a cylinder in the center of a cover part. A second sliding bearing is fastened to the cylinder. A rotary shaft protrudes upward from the cylinder without contact with the second sliding bearing. A first sliding bearing is a main bearing, which can radially support the rotary shaft, and the second sliding bearing is an auxiliary bearing which, when the rotary shaft is subjected to a load from the radial direction, bears that load in the radial direction together with the first sliding bearing. When the angle of inclination of the rotary shaft in the first sliding bearing is not maximal, the rotary shaft is supported only by the first sliding bearing, without the rotary shaft contacting the inside of the second sliding bearing. The amount of deformation of the rotary shaft when a load is applied to the rotary shaft from the radial direction and the rotary shaft first makes contact with the second sliding bearing is in a range from 0 to the maximum elastic deformation.

Abstract: In a brushless motor having a rotor in which a drive magnet 43 and a position detection magnet 44 are fixed to the inside of a rotor case 44, along the axial direction, an annular separation plate 45 having positioning parts 45a and 45b for positioning these in the circumferential direction is disposed between the drive magnet 43 and the position detection magnet 44. Thereby, the magnetic influence of the drive magnet can be limited, and thus a highly reliable position detection signal can be obtained.

Abstract: A washer member 22a and a seal member 41a are disposed in a mutually non-contacting state in the axial direction. A rotary shaft 11 has an annular groove 11a in the outer circumferential face. A minimum diameter part 11a3 of the annular groove 11a is disposed between the uppermost surface of the washer member 22a and the lowermost surface of the seal member 41a. The upper end of the annular groove 11a is disposed axially below the uppermost surface of the seal member 41a. The outer surface of the seal member 41a and the outer circumferential face of the rotary shaft 11 that faces the seal member 41a in the radial direction are subjected to oil-repellent treatment.

Abstract: A electrically insulating member, which covers a stator core, has a plurality of engagement claws, which extend in the axial direction of a rotary shaft, and a plurality of positioning projections, at positions in the circumferential direction differing from those of the engagement claws, which extend further than the engagement claws. A sensor board, on which a plurality of magnetic sensors are fixed in place, has engagement parts, which engage with the engagement claws, and positioning recesses, into which the positioning projections are inserted.

Abstract: Top face lands are formed on the top face of a circuit board, and bottom face lands are formed on the bottom face of the circuit board. The top face lands are disposed radially inward of a cylinder part of a cover member, and when viewed from axially above, the top face lands are hidden by the cover member such that they cannot be seen. The bottom face lands are disposed axially above the bottom face of the retaining plate, and do not protrude from the bottom face of the retaining plate. Viewed from the radial direction, a first cutaway is formed in the cylinder part of the cover member. Viewed from axially below, a second cutaway is formed in the retaining plate. When a circuit member is taken out in the radial direction, the circuit member is fastened to the top face lands, via the first cutaway, and when the circuit member is taken out in the axially downward direction, the circuit member is fastened to the bottom face lands, via the second cutaway.

Abstract: A cover member has a cylinder in the center of a cover part. A second sliding bearing is fastened to the cylinder. A rotary shaft protrudes upward from the cylinder without contact with the second sliding bearing. A first sliding bearing is a main bearing, which can radially support the rotary shaft, and the second sliding bearing is an auxiliary bearing which, when the rotary shaft is subjected to a load from the radial direction, bears that load in the radial direction together with the first sliding bearing. When the angle of inclination of the rotary shaft in the first sliding bearing is not maximal, the rotary shaft is supported only by the first sliding bearing, without the rotary shaft contacting the inside of the second sliding bearing. The amount of deformation of the rotary shaft when a load is applied to the rotary shaft from the radial direction and the rotary shaft first makes contact with the second sliding bearing is in a range from 0 to the maximum elastic deformation.

Abstract: A cover member has a through hole in the center. A rotary shaft protrudes upward from the through hole, without contact with the cover member. A first washer member, which is made from a hard material, is fastened to the rotary shaft, between the rotor case and the cover member. The first washer member is disposed without contact with the rotor case and the cover member.

Abstract: The bottom end of a rotary shaft contacts a cover part of a cover member, while the top end of the rotary shaft protrudes upwards from a retaining plate. A planar first washer member, which is made from a hard material, is fastened to the rotary shaft, between a bottom plate of a rotor case and an oil-impregnated bearing. The first washer member is disposed without contact with the bottom plate of the rotor case and the oil-impregnated bearing.

Abstract: A electrically insulating member, which covers a stator core, has a plurality of engagement claws, which extend in the axial direction of a rotary shaft, and a plurality of positioning projections, at positions in the circumferential direction differing from those of the engagement claws, which extend further than the engagement claws. A sensor board, on which a plurality of magnetic sensors are fixed in place, has engagement parts, which engage with the engagement claws, and positioning recesses, into which the positioning projections are inserted.

Abstract: In addition to a bearing holder being provided with an annular groove that opens down in the axial direction, an end cap is provided with an annular projection that extends up in the axial direction, and by way of press-fitting the projection into the groove, the fitted portion of the bearing holder and the end cap is forms an axially convex labyrinthine shape extending along the entire perimeter.

Abstract: The vibration generating device comprises a first member which has a first contact part and a second member which has a second contact part arranged spaced apart from the first member; a tilt support member which supports the second member so as to be able to tilt with respect to the first member; and a vibration generating member which is fixed to the first member or the second member. When the first member or the second member tilts such that the first contact part makes contact with the second contact part, the vibration generating member vibrates differently depending on the direction in which the first member or the second member tilts.

Abstract: A spindle motor comprises a turntable, on which a disc is loaded, and a motor which rotates the turntable, wherein a top face plate of a magnetic body rotor case, which rotates united with a rotational shaft of the motor, serves as the turntable. A centering member that guides the inner edge of the disc so as to be concentric with the rotational shaft is disposed on the top face plate of the rotor case and a clamping magnet is disposed in a through-opening on the interior of the centering member and is in contact with the top face plate of the rotor case.