Abstract:
A chain guide includes a guide base (21) disposed to face one side of a timing chain (5) for transmitting torque, and having an opposed pair of side plates (22) each formed with a plurality of shaft engaging portions (25) arranged along a circular arc. Roller shafts (31) have their ends supported by the respective shaft engaging portions (25) Rollers (41) for guiding the chain are rotatably supported by the respective roller shafts (31). Noncylidrical surface engaging portions are formed on the ends of the roller shafts (31) and on closed ends of the shaft engaging portions (50) to rotationally fix the roller shafts (31), thereby preventing the roller shafts (31) from rotating under drag torque applied from the rollers (41).
Abstract:
The invention relates to a needle bearing unit (1) for mounting a valve shaft or actuator shaft (8), comprising: an outer ring (2); a needle cage (4) arranged in the outer ring (2); and needle-shaped rolling bodies (5) guided in the needle cage (4); characterized in that the outer ring (2) has the form of a sleeve and has a sleeve bottom (3a) at its first end (2a). The invention is further characterized by an inner ring (20) arranged in the needle cage (4) and comprising, at its end remote from the sleeve bottom (3a), an inner ring flange (20b) pointing towards the outer ring (2), and in that the outer ring (2), at its second end (2b), has a sleeve flange (3b) which encloses the inner ring flange (20b) in order to hold the inner ring (20) in place in the outer ring (2). The invention further relates to a gas control valve arrangement (10) comprising a rotatable valve shaft (8) and a gas control valve (9) arranged on the valve shaft (8), said gas control valve comprising at least one needle bearing unit (1) according to the invention.
Abstract:
A method of manufacturing a rolling bearing ring includes preparing a coil material (2) and a press machine (3) for obtaining a rolling bearing ring from the coil material (2), setting the coil material (2) on the press machine (3), and obtaining the rolling bearing ring by heating the coil material (2) on the press machine (3) to a temperature not lower than an A 1 transformation point, thereafter punching a part of the coil material (2) into a ring form, and thereafter quenching a formed object (2A) on the press machine (3).
Abstract:
At a plurality of locations along a circumferential direction on a cylindrical portion 77c, cutout portions 90 are formed such that each of the cutout portions is recessed in an axial direction from a distal edge of the cylindrical portion 77c toward a race portion 76a. A protrusion is provided at a portion closer to the race portion 76a from a bottom edge of each of the cutout portions 90 such that the protrusion protrudes in a radial direction from the cylindrical portion 77b toward a side away from the race portion 76a. The protrusion serves as a race-retaining locking portion 91 to prevent a race 74a from moving out from a mating member on which the race 74a is mounted. In this way, there is provided a structure by which durability can be ensured even when rigidity of a portion backing up the race 74c is low, and manufacturing cost can be reduced.
Abstract:
The invention relates to a linear drive (1), which has an output slide (4), which is guided on a drive housing (7) in a linearly movable manner. The output slide (4) contains a one-piece slide body (24), which is designed as a bent sheet-metal part. In this context, the slide body (24) comprises a plate-shaped central segment (32), guide limbs (33, 34), which are arranged alongside the plate-shaped central segment and bent downward, and a drive limb (52), which is arranged at an end face and which likewise is bent downward. The guide limbs (33, 34) are used to linearly guide the output slide (4), and the drive limb (52) is used for the application of the driving forces that cause the reciprocating motion (3) of the output slide (4). The invention further relates to a method for producing such a linear drive.
Abstract:
Kupplungsanordnung (12) für einen Kraftfahrzeugantriebsstrang (10), mit einem Gehäuse (34), mit wenigstens einer Kupplung (20), mit einem ersten Drehglied (38), das als Wellen- oder Nabenglied ausgebildet ist und das in Bezug auf das Gehäuse (34) drehbar gelagert ist, und mit einem zweiten Drehglied (30), das einen sich radial erstreckenden Radialabschnitt (53) aufweist und das in Bezug auf das Gehäuse (34) drehbar gelagert ist, wobei zwischen dem ersten Drehglied (38) und dem Radialabschnitt (53) des zweiten Drehgliedes (30) ein Axiallager (52) angeordnet ist. Dabei ist das Axiallager (52) in Bezug auf das erste Drehglied (38) zentriert montiert (Fig. 1).
Abstract:
This balancing assembly (2) for an internal combustion engine comprises a balancing shaft (4) and at least two bearings for holding the balancing shaft in position with respect to a supporting structure (102) of the engine, each bearing comprising an inner ring (62) mounted around the balancing shaft, an outer ring (64) designed to interact with the supporting structure and balls (66) located in a bearing chamber (69) defined between the inner and outer rings. According to the invention, each bearing is an angular contact rolling bearing (6, 6') with a single row of balls (66) and at least one (64) of the inner ring (62) and the outer ring (64) is made of a drawn piece of metal.