Patent attributes
A flexible coupling is provided with a plurality of drive side connection elements (10A) and driven side connection elements (10B) arranged alternately in a circumferential direction, a drive side bobbin (11A) and a driven side bobbin (11B) outward inserted to the respective connection elements (10A, 10B) in a loose fit state, first and second connection bands (20, 30) wound in a loop shape around the drive side bobbin (11A) and the adjacent driven side bobbin (11B), and alternately arranged in the circumferential direction, and an annular elastic body (40) formed in a state that the bobbins (11A, 11B) and the connection bands (20, 30) are buried, the bobbins (11A, 11B) being made of a synthetic resin material, and a lubricant being filled in a fitting gap (G) between the connection elements (10A, 10B) and the bobbins (11A, 11B).
