A kind of structure for the cartridge heater drying beans machine with what transmission coffee, includes an inputting shaft, a force-output shaft and a shaft joint. The shaft joint has one first on the same axis of position what to meet Kong Yuyi second and connect hole, and wherein the inputting shaft penetrates this and first connects hole, which penetrates this and second connect hole. At least part surface of the inputting shaft is contacted with first hole wall for connecing hole, and at least part surface of the force-output shaft is contacted with second hole wall for connecing hole. When the rotation of the inputting shaft of motor, which pushes the shaft joint to rotate with the outer peripheral surface of its part, then the outer peripheral surface of the power output shaft portion is pushed by the shaft joint, and then the cartridge heater is driven to rotate. Thereby, cartridge heater generates the inputting shaft rotation of Re Peng Zhang Gan Wataru motor when can effectively reduce the overall volume that coffee dries beans machine, and can avoid baking.一種用於傳動咖啡烘豆機之加熱筒的結構，包括有一入力軸、一出力軸，以及一連軸器。該連軸器具有位於同一軸線上的一第一接孔與一第二接孔，其中該入力軸穿入該第一接孔，該出力軸穿入該第二接孔。該入力軸之至少一部分表面與該第一接孔之孔壁接觸，該出力軸之至少一部分表面與該第二接孔之孔壁接觸。當馬達的入力軸轉動時，該入力軸以其部分的外周面推動該連軸器轉動，再由該連軸器推動該出力軸部分的外周面，進而帶動該加熱筒轉動。藉此，可有效可減縮咖啡烘豆機的整體體積，並可避免烘焙時加熱筒產生熱膨脹干渉馬達的入力軸轉動。
