Importance

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Abstract

The present invention relates to an apparatus for automatic brake of walking support machine which is safe on downward slopes by preventing over speed due to the acceleration of gravity and protect user on upward slopes.The present invention is devised for walking support machines consist of steering handles (1), main body (2), and a front wheel (3) and 3 rear wheels (4), and is characterized by being comprised of; fixed disks (10) which are installed at the bottom of said main body (2) and support rear wheels (4) to enable rotation; high speed gears (20) and low speed gears (30) which are installed in said rear wheels (4) concentrically; brake drums (40) which are installed on the outside of said fixed disks (10); 1.sup.st gears (50) installed on the center shaft of said brake drums (40); 2.sup.nd gears (60) which are installed on one side of said brake drums (40) with unidirectional clutches (C) to prevent backward running and assembled with said 1.sup.st gear; adjusting knobs (70) which are installed inside of said fixed disks (10), rotatable, and assembles 1.sup.st gears (50) and 2.sup.nd gears (60) selectively with high speed gears (20) and low speed gears (30); and two pairs of brake disks (80) installed inside said brake drums (40) to receive spring (S1) tension and rotate in connection with said 1.sup.st gears (50); in said two rear wheels.

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First Claim