Forward/backward rotation switching mechanism
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United States of America Patent
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Mar 17, 2015
Grant Date -
Jun 19, 2014
app pub date -
Dec 14, 2012
filing date -
Dec 14, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a forward/backward rotation switching mechanism, comprising: a cover, a turntable, a terminal-fixing body, a first contact terminal, and a second contact terminal. In the present invention, a plurality of dust-off trenches are especially formed on the peripheral edges of the turntable for preventing from the dust accumulation between the turntable and a cover; therefore, even if the forward/backward rotation switching mechanism is used in an environment having a lot of dust, the turntable can still be turned around because the dust is ruled out by the dust-off trenches.
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