Patent ID: 8706018
Filing Date: 2014-04-22
Classification: G03G

Abstract:
1. A position detection apparatus comprising: a moving member in contact with a detection object, the moving member moving with movement of the detection object, the moving member including a rotation shaft; a detection unit that detects a positional change of the moving member; a support member that rotatably supports the moving member, the support member including a through hole and the rotation shaft of the moving member is disposed within the through hole; a diameter of the through hole is larger than a diameter of the rotation shaft; a first pressing member and a second pressing member provided on opposite sides of the moving member, the first pressing member and the second pressing member attached to the moving member; the first pressing member rotates the moving member against the detection object, presses against the moving member, and moves the rotation shaft in a direction of the detection object, and the second pressing member rotates the moving member against the detection object, and moves the rotation shaft in the direction of the detection object; wherein at least one of the first pressing member and the second pressing member has: a holding member that holds the moving member; a contact member in contact with a contact surface formed approximately parallel to the direction of the rotation shaft of the moving member; and a connecting member that connects the holding member to the contact member, and an angle on a side of the moving member, formed with a plane including an end of the connecting member on a side of the holding member and an end of the connecting member on a side of the contact member, and the contact surface, is smaller than 90°.