Abstract: Unpleasant vibration and muffled sound are restrained. A constant velocity universal joint includes an outer joint part having a plurality of track grooves formed on its cylindrical inner circumferential surface and extending in an axial direction, an inner joint part having a plurality of track grooves formed on its spherical outer circumferential surface and extending in the axial direction, six torque transmitting balls, each being put in a ball track formed by a pair of the track groove of the outer joint part and the track groove of the inner joint part, and a cage having pockets for retaining the torque transmitting balls. The center of curvatures of the spherical outer circumferential surface and the center of the spherical inner circumferential surface of the cage are offset by the same distance in the opposite directions along the axis about the center of the joint.

Abstract: Unpleasant vibration and muffled sound are restrained. A constant velocity universal joint includes an outer joint part having a plurality of track grooves formed on its cylindrical inner circumferential surface and extending in an axial direction, an inner joint part having a plurality of track grooves formed on its spherical outer circumferential surface and extending in the axial direction, six torque transmitting balls, each being put in a ball track formed by a pair of the track groove of the outer joint part and the track groove of the inner joint part, and a cage having pockets for retaining the torque transmitting balls. The center of curvatures of the spherical outer circumferential surface and the center of the spherical inner circumferential surface of the cage are offset by the same distance in the opposite directions along the axis about the center of the joint.

Abstract: Unpleasant vibration and muffled sound are restrained. A constant velocity universal joint includes an outer joint part having a plurality of track grooves formed on its cylindrical inner circumferential surface and extending in an axial direction, an inner joint part having a plurality of track grooves formed on its spherical outer circumferential surface and extending in the axial direction, six torque transmitting balls, each being put in a ball track formed by a pair of the track groove of the outer joint part and the track groove of the inner joint part, and a cage having pockets for retaining the torque transmitting balls. The center of curvatures of the spherical outer circumferential surface and the center of the spherical inner circumferential surface of the cage are offset by the same distance in the opposite directions along the axis about the center of the joint.

Abstract: A constant velocity universal joint includes: an outer joint part 10 having a plurality of track grooves 14 formed on its cylindrical inner circumferential surface 12 and extending in an axial direction; an inner joint part 20 having a plurality of track grooves 24 formed on its spherical outer circumferential surface 22 and extending in the axial direction; six torque transmitting balls 30, each being put in a ball track formed by a pair of the track groove 14 of the outer joint part 10 and the track groove 24 of the inner joint part 20; and a cage 40 having pockets 46 for retaining the torque transmitting balls 30. The center Oo of curvatures of the spherical outer circumferential surface 42 and the center Oi of the spherical inner circumferential surface 44 of the cage 40 are offset by the same distance in the opposite directions along the axis about the center of the joint O.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: A constant velocity universal joint includes an outer joint member has three track grooves extending axially in an inner circumference portion thereof with a roller guide surface extending axially on each side of the respective track grooves; a tripod member has three trunnions protruding in the radial direction; and a roller mechanism is mounted in each of the trunnions of the tripod member. The roller mechanism is capable of swinging and oscillating freely with respect to the trunnions, and has a roller guided along the roller guide surface in the direction parallel to the axis line of the outer joint member. An outer peripheral surface of the roller, which is made by ground-finishing, is in contact with the roller guide surface, and has a surface roughness of 0.35 Ra or less.

Abstract: In a no-flange type outer joint member, the amount of abrasion in a large inner diameter portion formed for a track groove is intended to be restrained. In a tripod type constant velocity universal joint including: a no-flange type outer joint member; and a roller assembly including a roller, being attached to a trunnion so as to be capable of oscillating, hardened layers are formed on portions of a large inner diameter portion of the outer joint member, which are in contact with an inclined roller assembly. In this case, a value of F/D is set equal to or less than 0.45, where a distance from a center of the track groove of the outer joint member to the ends of both the hardened layers on the side of the center of the track groove is F, and a diameter of an outer circumference of the roller assembly is D.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: An annular support ring 32 is fitted onto the outer periphery of each trunnion 22. This support ring 32 and the roller 34 are unitized via a plurality of needle rollers 36 to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion 22 has an outer periphery of straight shape, parallel to the axis of the trunnion 22. In cross section, the trunnion 22 has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring 32 is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions 22 and the provision of predetermined clearances between the trunnions 22 and the support rings 32, to allow the support rings 32 to move along the axial directions of the trunnions 22 as well as make tilting movements with respect to the trunnions 22.

Abstract: An object is to stabilize the induced thrust and the sliding resistance at a low level after expiration of the endurance life and exhibit favorable NVH characteristics. A constant velocity universal joint comprises: an outer joint member having three track grooves formed to extend axially in an inner circumference portion thereof, and having a roller guide surface formed to extend axially on each side of the respective track grooves; a tripod member having three trunnions protruding in the radial direction; and a roller mechanism mounted in each of the trunnions of the tripod member. The roller mechanism is capable of swinging and oscillating freely with respect to the trunnions, and has a roller that is guided along the roller guide surface in the direction parallel to the axis line of the outer joint member. In the constant velocity universal joint, the outer peripheral surface of the roller has a surface roughness of 0.35 Ra or less.

Abstract: In a no-flange type outer joint member, the amount of abrasion in a large inner diameter portion formed for a track groove is intended to be restrained. In a tripod type constant velocity universal joint including: a no-flange type outer joint member; and a roller assembly including a roller, being attached to a trunnion so as to be capable of oscillating, hardened layers are formed on portions of a large inner diameter portion of the outer joint member, which are in contact with an inclined roller assembly. In this case, a value of F/D is set equal to or less than 0.45, where a distance from a center of the track groove of the outer joint member to the ends of both the hardened layers on the side of the center of the track groove is F, and a diameter of an outer circumference of the roller assembly is D.

Abstract: An annular support ring 32 is fitted onto the outer periphery of each trunnion 22. This support ring 32 and the roller 34 are unitized via a plurality of needle rollers 36 to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion 22 has an outer periphery of straight shape, parallel to the axis of the trunnion 22. In cross section, the trunnion 22 has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring 32 is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions 22 and the provision of predetermined clearances between the trunnions 22 and the support rings 32, to allow the support rings 32 to move along the axial directions of the trunnions 22 as well as make tilting movements with respect to the trunnions 22.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: A constant velocity universal joint is disclosed which includes an outer joint member with three axial track grooves and a tripod member with three radially projecting trunnion journals, each of the trunnion journals carrying a roller assembly received in each of the track grooves, a projection being formed at an end of each trunnion for interference with the roller assembly.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: An annular support ring 32 is fitted onto the outer periphery of each trunnion 22. This support ring 32 and the roller 34 are unitized via a plurality of needle rollers 36 to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion 22 has an outer periphery of straight shape, parallel to the axis of the trunnion 22. In cross section, the trunnion 22 has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring 32 is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions 22 and the provision of predetermined clearances between the trunnions 22 and the support rings 32, to allow the support rings 32 to move along the axial directions of the trunnions 22 as well as make tilting movements with respect to the trunnions 22.

Abstract: The invention aims at providing voice recognition apparatus which can perform training without a speaker being conscious thereof by utilizing the fact that the name of a distant party is frequently uttered at the beginning of conversation over telephone and increase the recognition ratio and recognition speed of the speaker dependent system as the speaker uses the voice recognition apparatus. The invention includes a voice recognition processor of the speaker independent system for comparing acoustic data obtained by splitting an input sound signal with a plurality of word acoustic data and detecting word acoustic data matching the split acoustic data, wherein the voice recognition processor sequentially compares word acoustic data generated from a phoneme model with acoustic data generated from a name uttered by the speaker, and stores the acoustic data identifier corresponding to the generated acoustic data, which match the word acoustic data, as a training signal.