| 摘要 |
A swaying mechanism is provided, which can be used on various kinds of electrical appliances that need to be swayed during use, such as electric fans, dryers, and heaters. The swaying mechanism can protect the motor from being burned out when the swaying motion is abruptly stopped by foreign objects, and also can allow the electric cable to be always fixed in position all the time during the swaying motion such that the cable would not wear out. The swaying mechanism includes a synchronization motor; a first elbow member coupled to the motor shaft; a linkage bar for providing a reciprocating force when the motor rotates; a second elbow member which can be swayed by the reciprocating force from the linkage bar; and a toothed section on which the second elbow member is swayably mounted. This swaying mechanism allows a coupling action between the teeth of the toothed section and the toothed portions of the second elbow member, thus allowing the teeth of the toothed section to skip over the toothed portion on the second elbow member when the swaying motion is abruptly stopped, thus protecting the synchronization motor from being burned out under such a condition. The swaying mechanism also allows the user to easily adjust the angular range of the swaying motion.
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