| 摘要 |
<p>A reversible tape-moving mechanism of a cassette tape recorder comprises a receiving and a feeding units (1, 2) each of them comprising a piezoelectric motor (4, 7) and a reel-receiving support (5, 8). In order to decrease dynamic forces applied to the tape the reel-receiving support (5, 8) is mounted on the shaft (6, 9) of the piezoelectric motor (4, 7) with the possibility of rotation about said shaft and is connected to it by means of two elements (43, 44 , 45 and 46) mounted with the possibility of frictional engagement. A lever-type switching mechanism (12), on a command from a control unit (21), actuates the axially movable elements (43, 44) of each of the units (1, 2) for consecutive disengagement of the feeding unit (2) and engagement of the receiving unit (1).</p> |
