Silent chain and chainring

A silent chain comprising:

• a plurality of inner links arranged along a transmission direction, at least one of the plurality of inner links including an inner plate unit, and an inner chain body that is fixedly disposed on and covers an outer side of the inner plate unit and that is made of a nonmetallic material, the inner chain body of the at least one of the plurality of inner links having an engagement protrusion that protrudes in an engagement direction;
• a plurality of outer links spaced apart from each other along the transmission direction and disposed on outer sides of the plurality of inner links, the plurality of outer links and the plurality of inner links being disposed in an alternating arrangement along the transmission direction, each of the plurality of outer links including two outer plates that are oppositely and respectively disposed on the outer sides of two adjacent ones of the plurality of inner links, and cooperating with the inner chain bodies of the two adjacent ones of the plurality of inner links to define an engagement space;
• and
• a plurality of rotation rods interconnecting the plurality of inner links and the plurality of outer links in series so that each of the plurality of inner links is rotatable relative to each of two adjacent ones of the plurality of outer links.