Patent ID: 9022958
Filing Date: 2015-05-05
Classification: A61H

Abstract:
1. A walking assistance device, comprising: a pelvic frame having an intermediate portion configured to be applied to a lower back of a user and a pair of front portions extending laterally outward and forward from the intermediate portion; an abdominal belt detachably securing the pelvic frame on a pelvic part of the user; a power generator attached to each front portion of the pelvic frame at a position corresponding to a hip joint of the user; a swing arm having a base end connected to an output end of each power generator; and a femoral support member connected to a free end of the swing arm via a pivot joint and configured to be applied to a femoral part of the user; wherein the pivot joint includes a spherical projection provided on one of the free end of the swing arm and the femoral support member and a socket provided on the other of the free end of the swing arm and the femoral support member, the socket defining a spherical recess configured to receive the spherical projection to permit a tilting movement of the femoral support member at least in two directions with respect to the free end of the swing arm, and wherein the spherical projection is provided with a pair of flat surfaces on either side thereof substantially in parallel to each other, and the spherical recess is provided with an open end including a narrower side limited by a pair of parallel edges, a width between the two parallel edges being smaller than a nominal outer diameter of the spherical projection and being equal to or greater than a width between the two flat surfaces.