Abstract: A resolver includes: a resolver rotor attached to a rotational shaft; an annular resolver stator that is provided on a radially outer side of the resolver rotor and that has a plurality of teeth each opposed, across a clearance, to an outer peripheral face of the resolver rotor and circumferentially arranged at given intervals; and a case member having a cylindrical fit portion to which an outer peripheral face of the resolver stator is fitted. At least three protrusions, each protruding radially outward, are formed at given circumferential intervals on the outer peripheral face of the resolver stator, so that the outer peripheral face of the resolver stator is press-fitted to an inner peripheral face of the fit portion at positions at which the protrusions are formed.

Abstract: A light emitting unit (60) is provided with a resin container (61) in which a recessed portion (61a) is formed, an anode lead portion (62) and a cathode lead portion (63) which are provided so as to be exposed on the bottom surface of the recessed portion (61a), a semiconductor light emitting element (64) attached to the cathode lead portion (63) on the bottom surface (70) of the recessed portion (61a), and a sealing resin (65) provided so as to cover the recessed portion (61a). The resin container (61) is produced from a white resin containing titania as a coloring agent. The anode lead portion (62) and the cathode lead portion (63) are each configured by forming a silver-plated layer with the gloss level set in the range of 0.3-1.0 inclusive on a metal plate based on a copper alloy or the like. Thus, the efficiency of extraction of light outputted from the light emitting unit is improved.

Abstract: A light-emitting chip (22) includes: a container (30) having a concave portion (31); first to fourth lead portions (61) to (64), provided to be exposed to the concave portion (31); and a first blue LED to a fourth blue LED (74) mounted on the first to fourth lead portions (61) to (64) exposed to the concave portion (31). The container (30) includes a first container portion (40) covering the region of the concave portion (31) where the first to fourth lead portions (61) to (64) are not exposed, and a second container portion (50) contacting the first to fourth lead portions (61) to (64) without being exposed to the concave portion (31) and accommodating the first container portion (40). The first container portion (40) is formed of a material having higher light reflectivity than that of the second container portion (50), and the second container portion (50) is formed of a material having higher thermal conductivity than that of the first container portion (40).

Abstract: A resin composition for sealing a light-emitting device of the present invention includes a silsesquioxane resin including two or more oxetanyl groups, a cationic polymerization initiator and a metal oxide fine particle. Furthermore, a lamp of the present invention includes a package equipped with a sealing member, an electrode exposed in the bottom portion of the sealing member, and a light-emitting device arranged on the bottom portion and electrically connected with the electrode, wherein the light-emitting device is sealed with the resin composition for sealing a light-emitting device filled in the sealing member.

Abstract: A resin composition for sealing a light-emitting device of the present invention includes a silsesquioxane resin including two or more oxetanyl groups, an aliphatic hydrocarbon including one or more epoxy groups and a cationic polymerization initiator. Furthermore, a lamp of the present invention includes a package equipped with a cup-shaped sealing member, an electrode exposed in the bottom portion of the sealing member, and a light-emitting device arranged on the bottom portion and electrically connected with the electrode, wherein the light-emitting device is sealed with the above-described resin composition for sealing a light-emitting device filled in the sealing member.

Abstract: A steel for use in high strength pinion shaft which is not refined and used by applying high frequency hardening, with less occurrence of peeling during hobbing, having high surface hardness, impact value and torsional strength after high frequency hardening, and with less heat treatment strains during high frequency hardening, containing, on the mass % basis; C: 0.45-0.55%, Si: 0.10-0.50%, Mn: 0.50-1.20%, P: 0.025% or less, S: 0.025% or less, Mo: 0.15-0.25%, B: 0.0005-0.005%, Ti: 0.005-0.10%, and N: 0.015% or less, satisfying: 0.80?Ceq 0.95 and f value?1.0, and the balance of Fe and inevitable impurities, as well as a manufacturing method thereof.

Abstract: A resin composition for sealing a light-emitting device of the present invention includes a silsesquioxane resin including two or more oxetanyl groups, an aliphatic hydrocarbon including one or more epoxy groups and a cationic polymerization initiator. Furthermore, a lamp of the present invention includes a package equipped with a cup-shaped sealing member, an electrode exposed in the bottom portion of the sealing member, and a light-emitting device arranged on the bottom portion and electrically connected with the electrode, wherein the light-emitting device is sealed with the above-described resin composition for sealing a light-emitting device filled in the sealing member.

Abstract: A resin composition for sealing a light-emitting device of the present invention includes a silsesquioxane resin including two or more oxetanyl groups, a cationic polymerization initiator and a metal oxide fine particle. Furthermore, a lamp of the present invention includes a package equipped with a sealing member, an electrode exposed in the bottom portion of the sealing member, and a light-emitting device arranged on the bottom portion and electrically connected with the electrode, wherein the light-emitting device is sealed with the resin composition for sealing a light-emitting device filled in the sealing member.

Abstract: A pinion shaft (7) formed using a non-refined steel as a material comprises a shaft section (71, 72) and a pinion teeth forming section (70) connecting with the shaft section (71, 72). The pinion teeth forming section (70) comprises pinion teeth (7a) and a tooth bottom (7b). The pinion teeth forming section (70) and the shaft section (71, 72) are provided with a hardened layer (80) that has been subjected to induction hardening and tempering. The steel contains 0.45 to 0.55% by mass of C, 0.10 to 0.50% by mass of Si, 0.15 to 0.25% by mass of Mo, and 0.0005 to 0.005% by mass of B. The surface hardnesses of the pinion teeth forming section (70) and the shaft section (71, 72) are 650 to 760 HV in terms of Vickers hardness.

Abstract: A steel for use in high strength pinion shaft which is not refined and used by applying high frequency hardening with less occurrence of peeling during hobbing, having high surface hardness, impact value and torsional strength after high frequency hardening, and with less heat treatment strains during high frequency hardening, containing, on the mass % basis; C; 0.45-0.55%, Si: 0.10-0.50%, MA: 0.50-1.20%, P: 0.025% or less, S: 0.025% or less, Mo: 0.15-0.25%, B: 0.0005-0.005%, Ti: 0.005-0.10%, and N: 0.015% or less, satisfying; 0.80≦Ceq 0.95 and f value≦1.0, and the balance of Fe and inevitable impurities, as well as a manufacturing method thereof.

Abstract: An electric power steering apparatus in which a shaft of a worm interlocking with rotation of a motor for steering assistance is movable in a radial direction, a pressing body for pressing the worm toward a worm wheel is provided, and the pressing body is provided with a V-shaped contact portion to abut in two circumferential positions of the shaft and an annular elastic body for restricting movement of the pressing body in a direction crossing the radial direction.

Abstract: An electric power steering apparatus in which a shaft of a worm interlocking with rotation of a motor for steering assistance is movable in a radial direction, a pressing body for pressing the worm toward a worm wheel is provided, and the pressing body is provided with a V-shaped contact portion to abut in two circumferential positions of the shaft and an annular elastic body for restricting movement of the pressing body in a direction crossing the radial direction.