| 主权项 |
1. A coupling comprising:
a pair of hubs including a first hub and a second hub, wherein the first hub includes a first inner end surface and a plurality of first claws located on the first inner end surface at intervals in a circumferential direction and projecting in an axial direction of the first hub, adjacent ones of the plurality of first claws each form a first gap therebetween, the second hub includes a second inner end surface and a plurality of second claws located on the second inner end surface at intervals in a circumferential direction and projecting in an axial direction of the second hub, adjacent ones of the plurality of second claws each form a second gap therebetween, the first inner end surface and the second inner end surface are opposed to each other, each of the first claws is located in the second gap and each of the second claws is located in the first gap; and a rubber spacer located between the first inner end surface and the second inner end surface, wherein a product of a damping ratio (ζ) and a square root (K1/2) of a dynamic torsional spring constant (K) of the coupling is 1.3 to 12.0. |
