A method of assembly of a drive shaft comprising providing a tubular member 12 of composite material form, fitting a collar 24 of composite material form to an exterior of an end part of the tubular member 12 to inwardly compress the end part of the tubular member 12, and subsequently press fitting part 14a, 16a of an end fitting 14, 16 into the interior of the end part of the tubular member 12. A drive shaft 10 manufactured in this manner is also described.

A propeller shaft as a power transmission shaft is provided between vehicle-side first second shaft parts, and a first tube as a first shaft member is connected to the first shaft part through a first joint member and to the second shaft part through a second joint member. The first tube is connected to the first joint member through a first collar member and to the second joint member through a second collar member. The first collar member includes a first main body part exposed from a first end portion of the first tube, and a first insertion part inserted into the inside of the first end portion. In at least the first collar member, the maximum value of the outer diameter of the first main body part is set to be no greater than the maximum value of the outer diameter of the first insertion part.

A method of manufacturing a torsion bar for a steering system is provided. The method includes supporting a torsion bar blank on a cold forming machine with a plurality of dies at a first end region of the torsion bar blank and a second end region of the torsion bar blank. The method also includes rolling the torsion bar blank to form an end region having a cylindrical outer surface extending from an axial end surface and a serrated portion disposed proximate the end region and axially offset from the axial end surface.

A camshaft phaser includes a stator, a rotor rotatable with respect to the stator, and a connector configured for being nonrotatably fixed to the rotor. The connector is configured for being nonrotatably connected to an outer circumferential surface of a camshaft. A method of constructing a camshaft phaser for an internal combustion engine includes providing a stator and a rotor rotatable with respect to the stator; and providing a connector configured for nonrotatably fixing to the rotor, the connector being configured for being nonrotatably connected to an outer circumferential surface of a camshaft.

The invention discloses a thin-wall-long-shaft-low-noise transmission mechanism for pedestal pumps, which includes a stainless steel pipe, a first bushing and a second bushing, a pump body, an impeller and a motor, the motor is arranged above the stainless steel pipe, the first and second bushings are embedded at first and second ends of the stainless steel pipe respectively, the impeller includes an impeller hub shaft, the motor includes a motor shaft, the impeller hub shaft passed through the pump body and connected to the first bushing which is embedded in the first end of the stainless steel pipe. Through the above solution, the machining precision of the thin wall stainless steel pipe is higher than that of a solid metal shaft and a plastic shaft, the strength is higher than that of a plastic shaft, and the noise is reduced when the pump is working.

The present invention relates to a transmission input shaft arrangement (100) for a vehicle transmission, the transmission input shaft arrangement comprising an input shaft (102); a clutch arrangement (104) and a bearing arrangement (106) arranged at a position spaced apart from the clutch arrangement (104). The bearing arrangement (106) comprises a bearing inner ring (108) rotationally connected to the clutch arrangement (104).

An overload clutch in a drivetrain having a shaft-hub connection between an input part and an output part is disclosed. The overload clutch includes a press fit including a first contact surface and a second contact surface, wherein at least one of the first contact surface and the second contact surface is coated with a soft metal. For homogenizing a surface pressure of the first and second contact surfaces, an oversize allowance between components forming a shaft and a hub is selected prior to joining the shaft and the hub such that during the joining a yield point of the soft metal is reached or exceeded.

A method of making an axle sleeve includes forming a main body comprising a cylinder and forming an expansion member whereby a diameter of the main body may be varied. The method includes cutting an inner helical cutout comprising a first slit defined through the main body and extending helically from an inner edge of the main body, cutting an outer helical cutout comprising a second slit defined through the main body and extending helically from an outer edge of the main body, forming an inner edge remaining portion comprising an annular section of the main body unbroken by the inner helical cutout, and forming an outer edge remaining portion comprising an annular section of the main body unbroken by the outer helical cutout.

A yoke has a yoke main body portion and a thin portion. The thin portion extends from the yoke main body portion toward the shaft, and is thinner than the yoke main body portion. The front end of the shaft is a large-diameter portion that has a larger diameter than an adjacent portion. The yoke main body portion has a yoke general-diameter portion and a step portion. The yoke general-diameter portion has an inner diameter that is substantially equal to an outer diameter of the large-diameter portion. The step portion extends from an end of the yoke general-diameter portion toward an axial line, and has an inner diameter smaller than the outer diameter of the large-diameter portion. The step portion abuts a front end of the large-diameter portion. The thin portion has reduced-radius portions that have smaller radii than the outer radius of the large-diameter portion.

A heat treatment method is provided in which a first steel component (11) formed with a coating (111) thereon is fitted in first holes (123, 124) of a second steel component (12) subjected to a quenching treatment. The heat treatment method includes a heating step of heating the second steel component to a first temperature (T.sub.1) equal to or higher than a tempering temperature (T.sub.0) of the second steel component and higher than a temperature of the first steel component by a temperature difference (T) for achieving shrink fitting and a shrink-fitting step of shrink-fitting the first steel component in the first holes of the second steel component in a state of maintaining the temperature difference for achieving shrink fitting between the first steel component and the second steel component.