| 摘要 |
<p>The device has a retaining member (35) occupying a reference position and cooperating with another retaining member (10) for retaining a semi-fixed leaf in a closed position. Two control units (40, 70) cooperate by camming action for biasing the movement of the former retaining member in a direction (P) while the retaining members cooperate by camming action for biasing the movement in another direction. A spring biases the former retaining member to move in one of the directions when the former retaining member is moved away from the reference position.</p> |
