| 摘要 |
<p>PURPOSE:To ensure the working of a tape recorder with a low level of voltage and the driving power of a miniature motor, by providing the 1st, 2nd and 3rd cam gears which share the drive of a head substrate as well as the press contact actuation of a pinch roller. CONSTITUTION:The 1st cam gear 86 has a notch at a part for intermittent engagement with a small gear of the 1st flywheel 6a; the 2nd cam gear 103 has also a partial notch for intermittent engagement with a small gear of the 2nd flywheel 6b; and the 3rd cam gear has always engagement with a small gear set at the revolving center of the gear 103 and actuates a pinch roller switching mechanism. These three types of cam gears are driven by a motor 1 to share the drive of a head substrate 24 and the press-contact actuation of pinch rollers 55a and 55b to capstan shafts 7a and 7b respectively. In such a constitution, the assured operation is possible for a tape recorder with a low level of voltage and the driving power of a miniature motor.</p> |
