| 摘要 |
<p>An original pressure plate opening and closing device comprises an assembling element, a supporting element of an original pressure plate, a cam sliding member, a pressed element and a compressing spring. The assembling element possesses an assembling space and two standing side plates formed at the two side parts of the assembling space, and assembles the assembling space toward the direction of a device body; the supporting element possesses a backboard and two bending side plates formed by the backboard, and assembles one side ends of the two side plates towards the direction of the two side plates of the assembling element movably; the cam sliding member is accepted and assembled towards the direction of the assembling element in the interior of the supporting element, the pressed element is connected with a cam part arranged at one side end of the cam sliding member and is arranged between the two side plates of the assembling element, and compressing spring is elastically arranged between the cam sliding member and one side of a free end of the supporting element, wherein the pressed element also comprises a slip part in surface contact with the cam part.</p> |
