초록 ▼

Chain wheel for a chain drive assembly having a driven and/or driving chain wheel including teeth and tooth spaces, the flanks or profiles of which optionally are defined by circle sections or involutes, each tooth space being designed with a concave roll bed having a geometrically defined center of

Chain wheel for a chain drive assembly having a driven and/or driving chain wheel including teeth and tooth spaces, the flanks or profiles of which optionally are defined by circle sections or involutes, each tooth space being designed with a concave roll bed having a geometrically defined center of curvature continued into the adjacent entry and exit profiles, wherein said tooth space is designed asymmetrically on behalf of the steepnesses of its entry and exit profiles and related to a reference plane containing said center of curvature and the axis of said chain wheel.

대표청구항 ▼

[ I claim:] [1.] A chain wheel for a chain drive of an internal combustion engine with a chain and a driving and/or driven chain wheel, comprising a plurality of alternating teeth and tooth spaces, at least a portion of the chain wheel being engaged with the chain at all times during operation of th

[ I claim:] [1.] A chain wheel for a chain drive of an internal combustion engine with a chain and a driving and/or driven chain wheel, comprising a plurality of alternating teeth and tooth spaces, at least a portion of the chain wheel being engaged with the chain at all times during operation of the chain drive, the profiles of the teeth and tooth spaces being shaped as circular-arc sections or involutes, with each of said tooth spaces having a concave roll bed that passes into the adjacent entry and exit profiles and has a geometrically defined center of curvature, wherein each said tooth space has an asymmetrical shape with respect to the steepness of its entry and exit profiles, based on a reference plane containing said center of curvature and the chain wheel axis, the teeth and tooth spaces being shaped and sized to reduce noise and tooth wear at the entrance and exit regions of the teeth during operation of the chain drive.