| 摘要 |
<p>In a tachograph, in which a drawer (6) serves as both driving and carrying means for the recording media, the drawer (6) is locked in the recording position. A switch (48) provides a signal to signify that the drawer (6) is locked. A rocker lever (45/52) subjected to spring bias (47) serves to operate this switch (48). A spring loaded bridge member (54) mounts a frusto-conical locking element (53) which is guided over a ramp surface (41, 42) and into a frusto-conical seating (43) in a guide block (39, 40 fig 2) formed at one side of the drawer (6). The locking element (53) is reliably trapped in the seating (43) after sliding over the ramp surface (41, 42) on the guide block (39, 40) and urges the rocker lever (45/52) against the spring force (47) away from the switch (48) to signify the locking of the drawer.</p> |
