Power transmission device of a compressor

摘要

A compressor (10) has a housing (12) and a rotary shaft (17). A power transmission device of the compressor includes a hub (26), an outer shaft portion (18) and a torque transmitting member (22). The hub has an internally threaded hole (27). The outer shaft portion has a first shaft portion (18A) and a second shaft portion (18B). The first shaft portion is located adjacent to an outer wall of the housing (12). The second shaft portion has external splines (19). The torque transmitting member has a large-diameter portion (23), a small-diameter portion (24) and a shaft hole (25). The large-diameter portion has a thrust-load receiving portion (23A). The small-diameter portion (24) is screwed in the threaded hole. The shaft hole receives therein the outer shaft portion, and has a first hole (25A) and a second hole (25B). The first shaft portion is press-fitted in the first hole and the second hole has internal splines. The second shaft portion (18B) is fitted in the second hole (25B) by spline engagement.