Abstract: A telescopic shaft for vehicle steering has first and second torque transferring members. The first torque transferring member is interposed, with an elastic body in between, between axial grooves formed in an outer peripheral surface of a male shaft and an inner peripheral surface of a female shaft. The second torque transferring member is interposed between other axial grooves formed in the outer peripheral surface of the male shaft and in the inner peripheral surface of the female shaft. The elastic body has transferring-member-side contact portions contacting the first torque transferring member, shaft-side contact portions contacting groove surfaces of the axial groove of the male shaft or the female shaft, and a biasing portion for elastically urging the transferring-member-side contact portions and the shaft-side contact portions away from each other. Rigidity of the transferring-member-side contact portions is different from that of the shaft-side contact portions.

Abstract: The invention provides a telescopic shaft including a male shaft and a female shaft which are so fitted as to be capable of a sliding motion but incapable of a rotation and in which an external periphery of the male shaft and an internal periphery of the female shaft are in contact with each other to transmit a torque in case of rotation, wherein a grease, containing a base oil having a dynamic viscosity of from 10 to 210 mm2/s at 25° C. and an extreme pressure additive, is sealed in a gap between the external periphery of the male shaft and the internal periphery of the female shaft. The construction enables a satisfactory torque transmission without detrimentally influencing the feeling of steering.

Abstract: In a telescopic shaft for vehicle steering which is installed in a steering shaft of a vehicle and in which a male shaft (1) and a female shaft (2) are fitted to each other to be incapable of mutual rotation and capable of sliding, at least one set of torque transmitting members (7, 8) are interposed between at least one set of grooves (3, 4, 5, 6) formed on the outer peripheral surface of the male shaft and on the inner peripheral surface of the female shaft to be extended in the axial direction to face each other and at least one projection (40) formed to be axially concentric with at least one of the grooves (3, 4) extending in the axial direction on the outer peripheral surface of the male shaft is fitted in at least one of the grooves (5, 6) extended in the axial direction of the female shaft through a gap in the radial direction.

Abstract: In a telescopic shaft for vehicle steering, assembled in a steering shaft of a vehicle and including a male shaft and a female shaft so fitted as to be mutually incapable of rotating but mutually slidable, at least one set of torque transmission members are disposed in at least one set of accommodating portions formed in an outer peripheral surface of the male shaft and in an inner peripheral surface of the female shaft, and at least the one set of torque transmission members are cylindrical members that gradually decrease in their diameters toward end portions in an axial direction.

Abstract: A telescopic shaft for steering of a vehicle is assembled in a steering shaft and includes a male shaft and a female shaft that are so fitted as not to be rotatable but to be slidable. Rolling members are fitted through an elastic body for pre-load between at least a pair of axially-extending grooves formed in an outer peripheral surface of the male shaft and in an inner peripheral surface of the female shaft. A slide member is fitted in between at least another pair of axially-extending grooves formed in the outer peripheral surface of the male shaft and in the inner peripheral surface of the female shaft. When a steering toque is equal to or smaller than a predetermined level, the elastic body for the pre-load exhibits a low rigidity characteristic as the elastic body performs pre-load action. When the steering torque is equal to or larger than the predetermined level, the slide member exhibits a high rigidity characteristic as the slide member engages with the pair of axially extending grooves.

Abstract: A telescopic shaft for steering of a vehicle is assembled in a steering shaft and includes a male shaft and a female shaft that are so fitted as not to be rotatable but to be slidable. Rolling members are fitted through an elastic body for pre-load between at least a pair of axially-extending grooves formed in an outer peripheral surface of the male shaft and in an inner peripheral surface of the female shaft. A slide member is fitted in between at least another pair of axially-extending grooves formed in the outer peripheral surface of the male shaft and in the inner peripheral surface of the female shaft. When a steering toque is equal to or smaller than a predetermined level, the elastic body for the pre-load exhibits a low rigidity characteristic as the elastic body performs pre-load action. When the steering torque is equal to or larger than the predetermined level, the slide member exhibits a high rigidity characteristic as the slide member engages with the pair of axially extending grooves.

Abstract: A telescopic shaft for motor vehicle steering assembled in a steering shaft of a motor vehicle and constructed by non-rotatably and slidably fitting a male shaft and a female shaft has a first torque transmission member and a second torque transmission member. The first torque transmission member is interposed, with an elastic body in between, between axial grooves formed in one line in an outer peripheral surface of the male shaft and an inner peripheral surface of the female shaft, respectively. The second torque transmission member is interposed between axial grooves formed in the other one line in the outer peripheral surface of the male shaft and in the inner peripheral surface of the female shaft, respectively.

Abstract: A surface hardening treatment is applied to an inner peripheral surface of a female shaft 2, thereby forming a hard layer Ha thereon. Surface harness of the hard layer is 400 Hv or more. The thickness of the hard layer Ha is 10 ?m to 100 ?m, and for example gas nitrocarburizing treatment is performed as the surface hardening treatment. A surface hardening treatment is also applied to an outer surface of each cylindrical member 8 by a heat treatment, thereby forming a hard layer Hb thereon. With this construction, the inner peripheral surface of the female shaft is prevented from deformation and wear under a high contact pressure, so that the smooth sliding movement can be obtained.

Abstract: There is disclosed a steering apparatus for a vehicle in which a steering power of a steering shaft is assisted by a column-assist type electric power steering apparatus so that the steering power is transmitted to steer the wheels by means of a steering mechanism, in which a telescopic shaft with a male shaft and a female shaft fitted to each other to be mutually unrotatable and slidable is interposed between an output shaft of said column-assist type electric power steering apparatus and an input shaft of the steering mechanism.

Abstract: In a telescopic shaft for vehicle steering which is installed in a steering shaft of a vehicle and in which a male shaft and a female shaft are fitted to each other to be unrotatable and freely slidable, a spherical member (7) is interposed between at least one of axial grooves (3, 5) which are respectively formed on the outer peripheral surface of the male shaft (1) and on the inner peripheral surface of the female shaft (2) through an elastic member (9), and a columnar member (8) is interposed between at least another of axial grooves (4, 6) which are respectively formed on the outer peripheral surface of the male shaft (1) and on the inner peripheral surface of the female shaft (2).

Abstract: Spherical members 7 are provided between plural pairs of axial grooves 3, 5 which are respectively formed on the outer peripheral surface of a male shaft 1 and on the inner peripheral surface of a female shaft 2, a leaf spring 9 for preload is interposed between the axial groove of the male shaft and the spherical member, and columnar members 8 are provided between another plural pairs of axial grooves 4, 6 which are respectively formed on the outer peripheral surface of the male shaft 1 and on the inner peripheral surface of the female shaft 2. Moreover, the radius of curvature of a transverse cross section of the axial groove 5 on the side of the female shaft 2 in which the spherical member 7 is rotated is set as 55% or less of the diameter of the spherical member 7.

Abstract: In a telescopic shaft for vehicle steering, assembled in a steering shaft of a vehicle and including a male shaft and a female shaft so fitted as to be mutually incapable of rotating but mutually slidable, at least one set of torque transmission members are disposed in at least one set of accommodating portions formed in an outer peripheral surface of the male shaft and in an inner peripheral surface of the female shaft, and at least the one set of torque transmission members are cylindrical members that gradually decrease in their diameters toward end portions in an axial direction.

Abstract: A telescopic shaft used for steering of a vehicle to be used in the steering shaft of a vehicle has a male shaft and a female shaft that are fitted to each other non-rotatably and slidably. The telescopic shaft is provided with at least one set of torque transmission members disposed in at least one set of intermediate fitting portions formed on the outer circumferential surface of the male shaft and the inner circumferential shaft of the female shaft and a stopper plate for regulating movement of the at least one set of torque transmission members with respect to the axial direction.

Abstract: According to the present invention, a rolling element 7 for rotating upon relative movement of both shafts 1 and 2 in the axial direction is disposed between three pairs of axial grooves 3 and 5 which are formed on the outer peripheral surface of the male shaft 1 and on the inner peripheral surface of the female shaft 2, respectively, a raceway surface element 9 which is in contact with the rolling element 7 and an elastic member 10 for pressurizing the rolling element 7 against the male shaft 1 and the female shaft 2 through the raceway surface element 9 are interposed between the axial groove 3 on the male shaft side 1 and the rolling element 7, and a sliding member 8 for slidably moving upon relative movement of the both shafts 1 and 2 in the axial direction is disposed between another three pairs of axial grooves 4 and 6 which are formed on the outer peripheral surface of the male shaft 1 and on the inner peripheral surface of the female shaft 2, respectively.

Abstract: In a telescopic shaft for vehicle steering which is installed in a steering shaft of a vehicle and in which a male shaft (1) and a female shaft (2) are fitted to each other to be incapable of mutual rotation and capable of sliding, at least one set of torque transmitting members (7, 8) are interposed between at least one set of grooves (3, 4, 5, 6) formed on the outer peripheral surface of the male shaft and on the inner peripheral surface of the female shaft to be extended in the axial direction to face each other and at least one projection (40) formed to be axially concentric with at least one of the grooves (3, 4) extending in the axial direction on the outer peripheral surface of the male shaft is fitted in at least one of the grooves (5, 6) extended in the axial direction of the female shaft through a gap in the radial direction.

Abstract: A telescopic shaft for vehicle steering which is assembled in a steering shaft of a vehicle and in which a male shaft 1 and a female shat 2 are fitted to each other to be unrotatable and slidable, comprises torque transmitting portions respectively provided in an outer peripheral portion of the male shaft 1 and in an inner peripheral portion of the female shaft 2 for transmitting torque when they are mutually in contact to rotate; and preloading portions each consisting of a rolling member 7 provided between the outer peripheral portion of the male shaft 1 and the inner peripheral portion of the female shaft 2 at a position different from that of the torque transmitting portion for rotating when the male shaft and the female shaft are relatively moved in the axial direction and an elastic member 8 provided adjacently to the rolling member 7 in the radial direction for applying preload on the male shaft 1 and the female shaft 2 through the rolling member 7.

Abstract: A sealed battery has an outer can having an opening and functioning as an electrode terminal, a sealing member fitted in the opening of the outer can and functioning as an electrode terminal which is different in polarity from the outer can, and a spiral-wound electrode assembly contained in the outer can. The spiral-wound electrode assembly includes a positive electrode, a negative electrode and a separator wound together spirally, in which the electrodes are separated by the separator and the outermost coil of the separator forms the outer circumferential face of the spiral-wound electrode assembly. A substrate included in the positive or negative electrode which is adjacent to the outermost coil of the separator has an exposed portion, which projects in the axial direction of the spiral-wound electrode assembly beyond the outermost coil of the separator and is in direct contact with the inner face of the outer can.

Abstract: A telescopic shaft for steering of a vehicle is assembled in a steering shaft and includes a male shaft and a female shaft that are so fitted as not to be rotatable but to be slidable. Rolling members are fitted through an elastic body for pre-load between at least a pair of axially-extending grooves formed in an outer peripheral surface of the male shaft and in an inner peripheral surface of the female shaft. A slide member is fitted in between at least another pair of axially-extending grooves formed in the outer peripheral surface of the male shaft and in the inner peripheral surface of the female shaft. When a steering toque is equal to or smaller than a predetermined level, the elastic body for the pre-load exhibits a low rigidity characteristic as the elastic body performs pre-load action. When the steering torque is equal to or larger than the predetermined level, the slide member exhibits a high rigidity characteristic as the slide member engages with the pair of axially extending grooves.

Abstract: A vehicle steering telescopic shaft having a male shaft and a female shaft so fitted to each other as not to be rotatable but to be slidable. First torque transmitting members are disposed between the male shaft and the female shaft, and roll when the male shaft and the female shaft make relative movements in axial directions. Elastic members are disposed adjacent in a radial direction to the first torque transmitting members and restrict them when rotated and apply a pre-load to the male shaft and the female shaft through the first torque transmitting members when not rotated. Second torque transmitting members are provided between the male shaft and the female shaft, and slide when the male shaft and the female shaft make the relative movements in the axial directions, and transmit a torque when rotated.

Abstract: Lubricating oil compositions for internal combustion engines comprises a mineral and/or synthetic base oil, (A) a succinimide-based ashless dispersant in an amount of 0.08 to 0.40 percent by mass in terms of nitrogen, (B) a metallic detergent in an amount of 0.06 to 0.22 percent by mass in terms of metal element, (C) a zinc secondary alkyldithiophosphate in an amount of 0.04 to 0.08 percent by mass in terms of phosphorus, and (D) a phosphorus-containing ashless anti-wear agent in an amount of 0.01 to 0.04 percent by mass in terms of phosphorus and contains sulfated ashes derived from the metal elements in the composition in an amount of 0.3 to 1.0 percent by mass. The lubricating oil compositions are excellent in anti-wear properties and high-temperature detergency although they are decreased in ash content.