Abstract: An object of the present invention is to provide a tensioner lever that can reduce vibration and noise when the chain runs, and realize smooth attachment into an engine with minimal deformation of the lever body with a simple configuration. A tensioner lever according to the present invention includes a lever body and a torsion coil spring pressed the lever body toward the chain. The lever body includes a stopper member mounting part where a stopper member by which the support arm of the torsion coil spring is locked and which retains the torsion coil spring in a compressed state is removably mounted. The stopper member mounting part is located closer to a distal end of the lever body than a center position in the longitudinal direction of the lever body, or a center of gravity position of the lever body.

Abstract: An object of the present invention is to provide a tensioner lever that can reduce vibration and noise when the chain runs, and realize smooth attachment into an engine with minimal deformation of the lever body with a simple configuration. A tensioner lever according to the present invention includes a lever body and a torsion coil spring pressed the lever body toward the chain. The lever body includes a stopper member mounting part where a stopper member by which the support arm of the torsion coil spring is locked and which retains the torsion coil spring in a compressed state is removably mounted. The stopper member mounting part is located closer to a distal end of the lever body than a center position in the longitudinal direction of the lever body, or a center of gravity position of the lever body.

Abstract: An object of the present invention is to provide a silent chain and a silent chain transmission device which stabilize chain behavior during chain travel to suppress an occurrence of tooth skipping and to reduce a string vibration sound and a meshing noise with simple configurations. In a silent chain 110, a pin hole 161 of an inner plate 160 and a pair of locker pins 170 are configured in such a size that a gap is formed between a seat surface 163 and a back surface of a short pin 172 in a state where the pair of locker pins 170 are in contact with each other on rolling surfaces 171a and 172a.

Abstract: An object of the present invention is to provide a silent chain transmission device which stabilizes chain behavior during chain travel to suppress an occurrence of tooth skipping and reduces a string vibration sound and a meshing noise with a simple configuration. In a silent chain transmission device 100 made up of a silent chain 110 and a sprocket 180, a pitch between rolling points I of locker pins 170 of front and rear pin holes 161 of a non-guide row 150 is set equal to a sprocket pitch S in a state where the silent chain 110 is wound around the sprocket 180 under a low load.

Abstract: An object of the present invention is to provide a silent chain and a silent chain transmission device which stabilize chain behavior during chain travel to suppress an occurrence of tooth skipping and to reduce a string vibration sound and a meshing noise with simple configurations. In a silent chain 110, a pin hole 161 of an inner plate 160 and a pair of locker pins 170 are configured in such a size that a gap is formed between a seat surface 163 and a back surface of a short pin 172 in a state where the pair of locker pins 170 are in contact with each other on rolling surfaces 171a and 172a.