GEAR DEVICE

PURPOSE:To achieve sufficient shock absorbing effect by alternatively arranging the flexural sections having a tooth section at the tip in two layers such that the entire teeth shape is approximately continuous when viewed from the plane direction. CONSTITUTION:A gear 3 is formed with a resilient synthetic resin where a plurality of elongated flexural sections 5, 6 are integrally developed integrally and radially in two layers at the outer-circumference to position the flexural sections 5, 6 alternatively. Tooth sections 7, 8 are formed respectively at each tip section of the flexaral sections 5, 6 thereby the tooth sections 7, 8 will also be positioned alternatively. The flexural sections 5, 6 are resiliently replacable in the circumferential direction and have the function to absorb the shock produced at the gearing and the group of alternatively positioned tooth sections 7, 8 will show the continuous entire tooth shape when viewed from the plane direction.