| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that repair for the loss of a tooth section is accompanied with much labor and risk in high places, as in the case of a frost protection fan device, though the loss of the gear and tooth section of a deceleration mechanism is caused by an impact generated when a frost protection fan is swung by a wind, because a crank mechanism is not provided with an impact buffer, in a structure in which the crank mechanism of the frost protection fan device conventionally includes: a movable plate and the frost protection fan, through reduction in a rotational speed of a motor by means of a deceleration mechanism, to a predetermined rotational speed and by rotations from the deceleration mechanism, revolving; and first and second crank arms. <P>SOLUTION: The crank mechanism for oscillation of an air blower includes: an attachment cylinder that is provided for a support material; the deceleration mechanism that is internally attached to an attachment base provided in the attachment cylinder, and the crank mechanism; and the frost protection fan that is provided on a movable shaft of the crank mechanism, or a trestle for oscillation. The crank arm of the crank mechanism is provided with an absorber. Thus, the loss of the tooth section of the gear of the deceleration mechanism can be prevented. <P>COPYRIGHT: (C)2012,JPO&INPIT |
