Patent ID: 8764574

Claim:
A coupling device configured for connecting a first shaft to a second shaft, the coupling device comprising: a first coupling member comprising a bottom wall having a mounting face at an axial end, and a plurality of arms extending axially from the mounting face of the bottom wall, the arms being circumferentially spaced from each other with a receiving space defined between each two neighboring arms; a second coupling member comprising a main body and a plurality of arms extending radially from an outer periphery of the main body, the arms of the second coupling member being circumferentially spaced from each other, each of the arms of the second coupling member being received in a respective receiving space of the first coupling member, whereby the first coupling member and the second coupling member rotate together; and a damper comprising a plurality of buffering blocks each of which is disposed between a respective arm of the first coupling member and a corresponding arm of the second coupling member adjacent to the arm of the first coupling member; wherein the first coupling member further comprises a cylindrical sidewall extending axially from a periphery of the bottom wall, and a radially outer end of each arm of the first coupling member adjoins an inner surface of the sidewall, and the radially outermost surfaces of the arms of the second coupling member abut against the inner surface of the sidewall of the first coupling member; and wherein the damper and the first coupling member are joined together by insert molding, the first coupling member and the damper form interlocking structures at interfaces between the arms of the first coupling member and the buffering blocks of the damper, each interlocking structure comprises a groove and a protrusion fittingly engaged in the groove.