Opening and closing mechanism
View Patent ↗A sliding member held by a movable case is interposed between the movable case and a stopper plate. During opening and closing operations, the movable case does not wear because the stopper plate and the sliding member slidably contact.
1. An opening and closing mechanism for a folding electronic device, comprising:
a fixed member including a fixed cam;
a movable member including a movable cam, the movable cam engaging with the fixed cam;
a spring for pressing the movable member against the fixed member;
a cylindrical movable case housing the fixed member, the movable member, and the spring;
a fixed shaft on which the movable member and the movable case are rotatably installed, the fixed member being secured to a first end of the fixed shaft, a second end of the fixed shaft protruding outward from an end face of the movable case;
a stopper plate secured to the second end of the fixed shaft, the stopper plate retaining the movable case; and
a sliding member interposed between the end face of the movable case and the stopper plate, the sliding member being held by the movable case;
wherein the sliding member is arranged to slide on the stopper plate upon rotation of the movable case relative to the fixed shaft; and
wherein the sliding member has a same hardness as the stopper plate.
2. The opening and closing mechanism according to claim 1 , wherein
the stopper plate has a surface slidable on the sliding member; and
the surface of the stopper plate has a groove provided therein, the groove facing the sliding member and having lubricant applied thereto.