Patent ID: 8679041
Filing Date: 2014-03-25
Classification: A61H,B25J,Y10T

Abstract:
1. A joint drive type link mechanism configured for use as a leg link in a walking assist device adapted to assist a user in walking, the joint drive type link mechanism equipped with a link including a joint portion at the intermediary thereof, and a driving source for driving the joint portion, in which the driving source and an electric component for use in controlling the driving source are mounted on the link: wherein the link is provided with an interior space to which the electric component is arranged, is arranged with the driving source at a position of the link located upward in a gravity direction than the location of the electric component, and is provided with an air inlet connecting with the interior space of the link at a position downward in the gravity direction than the location of the electric component, wherein the driving source is provided with an exhaust outlet for exhausting air passing through the interior space of the link via the driving source, and wherein the driving source is configured from an electric motor, is equipped with a reduction gear of a wave gear type connected to the electric motor, and wherein the interior space of the link is connected to an interior space of the reduction gear, and a vane portion oriented in the direction of the electric motor for blowing the air toward the electric motor is provided to a wave generator of the reduction gear.