| 摘要 |
<p>The object of the invention is a method and a coupling device for changing the function of a coupler, in which method the coupling device includes a frame piece (1), at least one contact surface (2) attached to the mentioned frame piece and a second contact surface (3) attached to a movable part (4). In the method according to the invention the position of the part (4) moving the mentioned second contact surface (3) in respect of the first contact surface (2) is changed in respect of the frame piece in order to change the function of the coupler from the opening-type to the closing-type and vice versa.</p> |
