| 摘要 |
PURPOSE:To prevent the pressure part of an original pressure-contacting device from rotating from an open state to a closed state carelessly by providing a stop member which abuts on a mount base, etc., while the pressure part is open or during the movement of the pressure part from the open state to the closed state. CONSTITUTION:When the pressure part 21a is opened, the stop member 21d comes to a position shown by a alternate long the two short dashes line almost at 90 deg. and the front end of the member 21d abuts on an original base plate 23 to rotate a fitting part 21b around a projection 21b' corresponding to the energizing force of an elastic body 33. Then, l<L, where l is the distance between the groove part 21c in the center of rotation of the pressure part 21a and the board 23 and L is the radius of the member 21d during the rotation of the pressure part 21a. Therefore, when the pressure part 21a is open as shown by a solid line, the energizing force of the elastic body 33 in a direction A cooperates with the weight of the pressure part 21a to lower the groove part 21c and the front end of the left member 21d receives upward force from the board 23 as its reaction force. The pressure part 21a receives rotational force in the direction of an arrow B in this state to hold itself open. |
