VIBRATION CONTROL STRUCTURE OF BLOWER, BOSS PART OF FAN AND AIR CONDITIONER

PROBLEM TO BE SOLVED: To provide a vibration control structure of a blower capable of heightening the vibration control effect by making an outer cylinder lower than an inner cylinder because the stress generated in an elastic body of a boss part of a fan is smaller on the outer cylinder side than that on the inner cylinder side, and holding down the cost without lowering the strength. SOLUTION: A blower is provided with a fan motor, a shaft for transmitting rotating force of the fan motor, the boss part having the elastic body fixed by bonding between an annular inner cylinder fitted to the shaft and an outer cylinder disposed on the outside thereof, and a fan disposed on the outside of the boss part. The height B of the section cut in cylinder round the axis of the elastic body is smoothly connected to satisfy the relationship expressed by B1>B>B2 to the inner cylinder side height B1 of the elastic body and the outer cylinder height B2.