Patent ID: 9700479
Date: 2017-07-11
CPC Classifications: A61H

Claim:
1. A foldable walker comprising: a front frame having left and right pin holes disposed opposite to each other in a transverse direction and each extending therethrough in an upright direction; two side frame units, each having a front portion which is pivotably connected to a respective one of left and right ends of said front frame, and a rear portion which is opposite to said front portion so as to be turnable relative to said front frame between a folded position, where said rear portion is close to said front frame, and an unfolded position, where said rear portion is remote from said front frame to be disposed opposite to said front portion in a longitudinal direction that is perpendicular to the transverse direction; and two locking units, each disposed between said front frame and a respective one of said side frame units, and each including a lock releasing lever and a locking pin, said lock releasing lever being mounted on the respective one of said side frame units and having a pulling fulcrum portion, an operating portion opposite to said pull fulcrum portion, and a pressing fulcrum portion disposed between said pulling fulcrum portion and said operating portion, said pulling fulcrum portion being configured so as to permit rotation of said lock releasing lever about said pulling fulcrum portion in response to an upwardly pulling action onto said operating portion, said pressing fulcrum portion being configured so as to permit rotation of said lock releasing lever about said pressing fulcrum portion in response to a downwardly pressing action onto said operating portion, said locking pin extending in the upright direction and having an end which extends through said lock releasing lever and between said pulling and pressing fulcrum portions, and an opposite end which extends through the respective one of said side frame units and which is disposed to be inserted into a respective one of said left and right pin holes so as to lock the respective one of said side frame units to the unfolded position, the upwardly pulling action or the downwardly pressing action onto said operating portion permitting removal of said lock pin from the respective one of said left and right pin holes so as to permit turning of the respective one of said side frame units to the folded position.