Patent ID: 8104141
Filing Date: 2012-01-31
Classification: A47C,B60N,Y10T

Abstract:
1. An angle-adjustable hinge comprising a construction in which: a pair of arc-shaped gear portions oscillatable around a first axis and formed outward from the first axis as a center, four wedge-shaped window portions disposed on positions in rotation symmetry for every 90° of which axis of symmetry is the first axis, and a pair of floating wedge members, disposed movably within the wedge-shaped window portions, of which one face side is a toothed face to engage with the gear portion and another face side is a contact face to contact a wedge face on an outer side of the wedge-shaped window portion to restrict the gear portion to oscillate in a direction, are provided; the pair of floating wedge members are disposed on positions in rotation symmetry for 180° of which axis of symmetry is the first axis; and the wedge faces of the four wedge-shaped window portions are formed serially on arcs each of which center is a second axis eccentric from the first axis and on positions in rotation symmetric for every 90° of which axis of symmetry is the first axis, wherein an oscillation gear member, in which the air of gear portions, an attachment piece portion protruding from the pair of gear portions, a ring protection portion, of which center is the first axis, circularly surrounding the pair of gear portions through escape window portions to which the floating wedge members are inserted, and a connecting portion protruding from an opposite side to the attachment piece portion and connecting the pair of gear portions and the ring protection portion, are unitedly formed, is provided.