Patent ID: 6969332
Filing Date: 2005-11-29
Classification: F16G

Abstract:
1. A silent chain for reducing wear on a chain guide surface, the chain comprising: a plurality of link plates each having a pair of tooth parts and pin holes, the link plates arranged in a thickness direction as well as in a length direction, adjacent link plates rotatably linked together using linking pins; guide links each having a pair of pin holes disposed on outermost sides of the link plates and fixed to the linking pins; wherein a first distance from a pin hole centerline of each link plate to a link plate surface facing the chain guide is greater than a second distance from a pin hole centerline of each guide link to a guide link surface facing the chain guide, the ratio of the first distance to the second distance effective to prevent substantial contact between the guide link surfaces and the chain guide surface when the chain engages the chain guide; and the guide link pin holes have a diameter φDg, the link plate pin holes have a diameter φDl, the pins have a diameter φd, the link plate first distance is hl, the guide link second distance is hg, and the distance between the guide link surfaces and the chain guide is e; the relationship between the link plate pin holes and e is expressed by the formula e=½ (φDl−φd); and hl−hg is greater than or equal to e.