Patent ID: 6189660
Filing Date: 2001-02-20
Classification: A47D,F16D

Abstract:
A ratchet wheel device on a baby walker, said rachet wheel device is provided on the bottom surface of a chassis of said baby walker, and is comprised of:a wheel rim forming therein a receiving space having a receiving chamber with an opening, said receiving chamber is provided with an axial hole and at least a side gear-chamber adjacent said axial hole, walls of said side gear-chambers are provided with stop portions;at least a transmitting gear mounted in said side gear-chambers through said opening of said receiving chamber in said wheel rim and moving in said side gear-chambers, the teeth thereof are obstructed from movement by flanges provided on said walls of said transmitting gears to limit their rotation;a transmitting member fixed on said chassis of said baby walker, one end thereof is extended into said axial hole of said receiving chamber, near the other end of said receiving chamber are a plurality of engaging teeth in transmission engagement with said at least one transmitting gear, such that when said transmitting gears are stopped by said stop portions in said side gear-chambers, rotation of said wheel rim is limited;when said wheel rim is rotated in a first direction, said transmitting gears do not engage said stop portions in said side gear-chambers, so that said wheel rim is rotated in said first direction; when said wheel rim is rotated in a second direction, said transmitting member pushes said transmitting gears to engage said stop portions, such that said wheel rim rotates in one direction only.