Connection device for spokes

A rim assembly includes a rim and multiple spoke units and each spoke unit has at least one fixing frame, a fixing member and at least one spoke. The at least one fixing frame is connected to the inside of the rim and has a passage through which the rod-like fixing member extends. The fixing member has at least one positioning hole so as to be connected to an end of a spoke. The other end of the spoke is connected to the hub. The fixing member is rotatable and swings relative to the at least one fixing frame to adjust the position for being connected with the spoke.