Opening and closing device

Patent metadata

Field	Value
Publication number	US-2016108656-A1
Application number	US-201414772759-A
Country	US
Kind code	A1
Filing date	Feb 26, 2014
Priority date	Mar 4, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

The inner surface of one side section of a frame ( 1 ) has the base-end section of a rotation arm ( 44 ) of a rotation-biasing means ( 4 ) provided so as to be rotatable. A roller ( 47 ) is provided on the tip-end section of the rotation arm ( 44 ). The roller ( 47 ) is pressed against and contacts the rear surface ( 2 a) of a door ( 2 ) as a result of the biasing by the rotation-biasing, means (nut illustrated). The rear surface of the door ( 2 ) is equipped with a damper means ( 5 ). The damper means ( 5 ) has a contact member ( 52 ) for pressing against and contacting the roller ( 47 ) when the door is in the closed position or in a prescribed intermediate position. The contact member ( 52 ) minimizes the speed at which the roller ( 47 ) moves forward.

First claim

1 . An opening and closing device comprising:
a frame; a rotating body having one end rotatably connected to the frame between a first position and a second position centered on a first rotating axis line; a rotation-biasing means which rotates and biases the rotating body in a first rotating direction from the first position towards the second position; and a damper means which suppresses the rotational speed of the rotating body when the rotating body rotates in at least one direction of the first rotating direction and a second rotating direction, which is direction opposite the first rotating direction; wherein, the rotation-biasing means comprises: a rotation arm having a base-end section rotatably provided at one of either the frame or the rotating body centered on a second rotating axis line parallel to the first rotating axis line; and a rotation and biasing member which rotates and biases the rotation arm, causes a tip-end section of the rotation arm to press against and contact the other of either the frame or the rotating body, and thereby rotates and biases the rotating body in the first rotating direction; and the second rotating axis line is separated and arranged with respect to the first rotating axis line so as to be orthogonal thereto such that when the rotating body rotates in the first rotating direction, the tip-end section of the rotation arm moves in a direction approaching the first rotating axis line, and when the rotating body rotates in the second rotating direction, the tip-end section of the rotation arm moves linearly along the rotating body in a direction of moving away from the first rotating axis line; and the damper means comprises: a damper body provided at the other of the frame and the rotating body; a movable member provided at the damper body so as to be capable of moving linearly in the same direction as the tip-end section of the rotation arm, and associated with the tip-end section of the rotation arm so as to enable relative movement with respect to the damper body in association with movement of the rotation arm; and a damper mechanism provided between the damper body and the movable member to suppress the movement speed of the movable member to a low speed.

2 . The opening and closing device according to claim 1 , wherein the movable member is arranged in front of the tip-end section of the rotation arm in the moving direction when the rotating body is rotating in the first rotating direction such that the tip-end section of the rotation arm butts against the movable member when the rotating body rotates in the second rotating direction, and thereby causes the moveable member to move.

3 . The opening and closing device according to claim 2 , wherein the movable member is arranged to move away from the tip-end section of the rotation arm when the rotating body is positioned at the first position and to the front of the tip-end section in the moving direction when rotation occurs in the first rotation and biasing direction of the rotation arm such that the tip-end section of the rotation arm butts against the movable member when the rotating body rotates in the second rotating direction by only a prescribed angle from the second position towards the first position.

4 . The opening and closing device according to claim 2 , wherein the movable member is formed in a rod shape, the longitudinal direction thereof is arranged in the same direction as the moving direction of the tip-end section of the rotation arm, and the tip-end section of the rotation arm butts against one end of the movable member in the longitudinal direction.

5 . The opening and closing device according to claim 4 , wherein the tip-end section of the rotation arm, the movable member, and the damper body are arranged so as to be aligned in nearly a row in the movement direction of the tip-end section of the rotation arm.

Assignees

• Sugatsune Kogyo

Inventors

• Sugiura Mitsuru

Classifications

• E05F5/027

  with closing action · CPC title

• E05F1/1008

  with a coil spring parallel with the pivot axis (E05F1/1207 takes precedence) · CPC title

• E05F5/10

  with piston brakes · CPC title

• E05Y2201/264

  linear · CPC title

• E05Y2201/21

  Brakes · CPC title