| 摘要 |
<p>A link plate for silent chains 10 includes a pair of teeth or toes 10a each formed of an inside flank 11 and an outside flank 12 and a pair of pin apertures 10b to insert connecting pins 3 thereinto. A moment M around a pin 3 is shown as follows: M = F x Lo where F is a force applied by a tooth 21 of a sprocket 20 against a meshing point 12e on the outside flank 12, and Lo is a length of a perpendicular drawn from a center O of a pin aperture 10b to an action line m of the force F. In order to decrease this moment M, the length Lo of the perpendicular is shortened, said link plate having an engaging point E with a tooth of a sprocket on an intersection between a straight line n and a flank, said straight line n and the direction of a central line connecting each center O of pin apertures forming a pressure angle alpha , and being in contact with a circle C, said circle C having a center located at a center O of said pin aperture and a radius r ≤ 0.25 x P, where P is a pin aperture pitch. Also, a pressure angle alpha of the outside flank is determined to satisfy an inequality, 32 DEG ≤ alpha < 34 DEG , to lessen the force F. <IMAGE></p> |
