73results about How to "Reduce the pressing force" patented technology

The present invention relates to a multi-step operation electrical switch having an elastic conductive plate, which is deformed to establish an electrical contact when a pressing force is applied thereto and is restored to the initial state to break the electrical contact when the pressing force is removed.According to the present invention, the elastic plate has a plurality of dome portions formed integrally therewith, each of the dome portions bulges in the direction opposite to the direction in which the elastic plate is pressed and is depressed by the pressing force applied thereto. The applied pressing force varies with the dome portions. In order to prevent an electrical contact from being established when no pressing force is applied to the elastic plate, spacer portions are necessary. According to the present invention, inclined spacer portions are provided along the outer peripheries of a first and a second dome portions, respectively.Therefore, since the pressing force is temporarily reduced when one dome portion is depressed, a click feel can be provided. Since the pressing force varies with the dome portions, a multi-step operation can be achieved. In addition, since the elastic plate has a plurality of dome portions and a plurality of spacer portions formed integrally therewith, the overall size of the switch can be readily miniaturized.

A sleeve support portion is arranged to support a sleeve having a rotating shaft inserted therein such that the rotating shaft is rotatable. A plurality of ribs extending in an axial direction is provided on an inner surface of the sleeve support portion. The ribs are preferably spaced from each other in a circumferential direction centered on the rotating shaft, and arranged to make contact with at least a portion of the sleeve. The ribs include a plurality of types of ribs, each type of the ribs having a different axial position of an axial edge, on an axially opening portion side, of a contact surface thereof which is arranged to make contact with the sleeve.

The variable hand switch has a switch body (40) formed of a resin molded body for providing elasticity, and the switch body (40) includes a base portion (41), a first pressing area member (42) formed at a tip end of the base portion (41) and bent upward in a U-shape from the base portion (41), and a first hanging wall (43) as a movable wall extending from the first pressing area member (42) toward the side of the base portion (41) (to the pressing direction). Opposite to one surface of the first hanging wall (43), an optical cable (30A) is fixedly arranged. This arrangement provides a variable hand switch having a structure capable of transmitting accurate control information to the body of an apparatus.

A support member disposed in a photosensitive member unit for supporting a photosensitive drum to be movable between an acting position, at which the photosensitive drum is brought into contact with a process unit, and a non-acting position, at which the photosensitive drum is separated from the process unit or is brought into contact with the process unit with a pressure lower than a pressure with which the photosensitive drum contacts the process unit at the acting position is included, and when the developing unit is located at a development position, the photosensitive drum secures the acting position, and when the developing unit is located at a non-development position, the photosensitive drum secures the non-acting position.