Patent ID: 9618081
Date: 2017-04-11
CPC Classifications: F16G

Claim:
1. A silent chain in which a guide row made up of a pair of left and right guide plates and a middle plate disposed between the pair of left and right guide plates and a non-guide row made up of a plurality of inner plates are alternately connected in a chain longitudinal direction by a pair of locker pins made up of a long pin and a short pin to be inserted into a pair of front and rear pin holes provided on the middle plate and the inner plates, wherein each locker pin includes a back surface and a rolling surface, the pin holes of the inner plates each include a seat surface which is formed on the outer side in the chain longitudinal direction and to which the back surface of the short pin is seated to restrict pin attitude, the pin holes of the inner plates and the pair of locker pins are formed in such a size that a gap is formed between the seat surface of the inner plates and the back surface of the short pin in a state where the pair of locker pins are in contact with each other on the rolling surfaces, the pin holes of the middle plate each include a seat surface which is formed on the outer side in the chain longitudinal direction and to which the back surface of the long pin is seated to restrict pin attitude, and the pin holes of the middle plate and the pair of locker pins are formed in such a size that a gap is formed between the seat surface of the middle plate and the back surface of the long pin in a state where the pair of locker pins are in contact with each other on the rolling surfaces.