Abstract: The present invention relates to a spring unit whose spring constant can be easily changed. The spring unit includes a plurality of wire springs each including a bent part formed in the middle of wire by bending, extending parts extending from the bent part, and end parts formed at ends of the extending parts. The wire springs are arranged side by side, and a deformed part protruding in a direction of arrangement of the wire springs is formed in one or more of the extending parts.

Abstract: In a curved spring configured to generate, based on a relative approaching displacement of the one-side bearing section and the other-side bearing section in an approach/separation direction, an urging force in a separation direction in which a one-side bearing section and an other-side bearing section are separated from each other, a linear elastic body is provided to extend on a closed curve, which includes a one-side portion arranged along a circumferential direction of the one-side bearing section and an other-side portion arranged along a circumferential direction of the other-side bearing section, and to constitute elastic sections of two lines between the one-side portion and the other-side portion.

Abstract: The sliding apparatus includes a substrate fixed to a main body, a slide plate being fixed to a sub-body and being slidable between a closed position and an open position in an opening/closing direction, a hole formed in the slide plate, a sloped surface part being formed in the main body, and being engaged with the hole in the closed position, and including a sloped surface being sloped toward a rear direction in the opening/closing direction, a slide guiding part guiding the slide plate in a sliding direction, a restricting part restricting movement of a closing direction end of the slide plate in the front/rear direction during an initial stage of sliding the slide plate from the closed position to the open position, and a sloped part being formed in a closing direction end of the slide guiding part and being sloped in a rear direction.

Abstract: The present invention relates to a spring unit whose spring constant can be easily changed. The spring unit includes a plurality of wire springs each including a bent part formed in the middle of wire by bending, extending parts extending from the bent part, and end parts formed at ends of the extending parts. The wire springs are arranged side by side, and a deformed part protruding in a direction of arrangement of the wire springs is formed in one or more of the extending parts.

Abstract: An opening and closing device includes a fixed frame including a shaft receiving part and fixed to a first housing, a movable plate configured to be rotationally movable relative to the fixed frame, a slide plate configured to be slidable relative to the movable plate and fixed to a second housing, multiple arms of the same length provided between the shaft receiving part and the movable plate to have respective one ends received by the shaft receiving part and respective other ends received by the movable plate, and a slide mechanism configured to cause the slide plate to slide relative to the movable plate. The slide plate is caused to slide relative to the movable plate by the slide mechanism and the movable plate rotates relative to the fixed frame with turns of the arms, so that the second housing moves between a closed position and an open position.

Abstract: An opening and closing device includes a fixed frame including a shaft receiving part and fixed to a first housing, a movable plate configured to be rotationally movable relative to the fixed frame, a slide plate configured to be slidable relative to the movable plate and fixed to a second housing, multiple arms of the same length provided between the shaft receiving part and the movable plate to have respective one ends received by the shaft receiving part and respective other ends received by the movable plate, and a slide mechanism configured to cause the slide plate to slide relative to the movable plate. The slide plate is caused to slide relative to the movable plate by the slide mechanism and the movable plate rotates relative to the fixed frame with turns of the arms, so that the second housing moves between a closed position and an open position.

Abstract: In a curved spring configured to generate, based on a relative approaching displacement of the one-side bearing section and the other-side bearing section in an approach/separation direction, an urging force in a separation direction in which a one-side bearing section and an other-side bearing section are separated from each other, a linear elastic body is provided to extend on a closed curve, which includes a one-side portion arranged along a circumferential direction of the one-side bearing section and an other-side portion arranged along a circumferential direction of the other-side bearing section, and to constitute elastic sections of two lines between the one-side portion and the other-side portion.

Abstract: The sliding apparatus includes a substrate fixed to a main body, a slide plate being fixed to a sub-body and being slidable between a closed position and an open position in an opening/closing direction, a hole formed in the slide plate, a sloped surface part being formed in the main body, and being engaged with the hole in the closed position, and including a sloped surface being sloped toward a rear direction in the opening/closing direction, a slide guiding part guiding the slide plate in a sliding direction, a restricting part restricting movement of a closing direction end of the slide plate in the front/rear direction during an initial stage of sliding the slide plate from the closed position to the open position, and a sloped part being formed in a closing direction end of the slide guiding part and being sloped in a rear direction.