Nhk Spring Co., Ltd.

Toshimitsu Araki

Norihiro Tajima

Mitsuteru Mimura

Takashi Ogino

Atsushi Shitama

Hidenori Nanke

A tolerance ring includes a base formed of a strip-like member approximately wound around into a ring shape, and a plurality of projections provided along a winding direction of the base so as to protrude in a radial direction from an outer peripheral surface of the base, wherein each of the projections has edges serving as a boundary with the base and at least one of the edges in a width direction orthogonal to the winding direction has a shape intersecting the winding direction.

Tolerance ring

A tolerance ring includes: a base formed of a strip-like member substantially wound around into a shape; a plurality of projections provided along a winding direction of the base so as to protrude from an outer peripheral surface of the base in a radial direction of the base orthogonal to the outer peripheral surface; at least one extended portion extending from at least one of edge end portions in a width direction of the base, the width direction extending orthogonally to the winding direction and the radial direction. The extended portion extends from a region that includes at least one of a plurality of straight lines passing through respective contact points disposed between a section of the base and a circumscribed circle that circumscribes the section and extend in parallel with the width direction.

Tolerance ring and hard disk device

A tolerance ring has a ring shape formed of a plate-shaped member substantially into a circle along a predetermined direction and includes a plurality of convex portions protruding in a radial direction, and a notch portion notched in a direction orthogonal to a circumferential direction on at least one of outer edge side end portions in the direction orthogonal to the circumferential direction.

Tolerance ring, hard disk device, and method for manufacturing hard disk device

A tolerance ring is formed of a plate member, in a ring shape that is substantially circular along a predetermined direction, and provided with a plurality of protrusions projected radially in a circumferential direction, wherein an even number of the protrusions are arranged along the circumferential direction, and a plurality of straight lines that pass through a central portion of the plurality of protrusions and a center of a circle that circumscribes the tolerance ring cross one another.

A clamp for a disk rotation driver stably and surely supports a disk in the disk rotation driver. The clampfor a disk rotation driverhaving a central portion and a periphery being circumferentially provided with a contact portion, the central portion fastened to a hubto be rotated, and the contact portionpressed against a recordable diskattached to the hubto apply a pressing force Fv to the diskin a rotation axis direction and fixedly support the magnetic diskon the hub, the clampcomprising: a wall portionextending from the periphery and being oriented in the rotation axis direction to form the contact portionso that a frictional force &#x3bc;Fy produced between the contact portionand the magnetic diskand resisting a locomotion Fx that acts on the contact portionand radially outwardly biases the contact portionwhen the contact portionis in contact with the magnetic diskis equal to or larger than the locomotion Fx.

Growing community of inventors

Kanagawa, Japan

Toshimitsu Araki