| 摘要 |
An automatic brake device for a walking support machine is provided to allow a brake to be automatically engaged at high or low speed according to the state of a patient so as to prevent the accident which is caused because of an acceleration on a downhill path, or because of a backward rolling on an uphill path, and so secure the safety of a user. A walking support machine includes: a control handle; a body(2); a front wheel; and a rear wheel(4). An automatic brake device for the walking support machine comprises: a fixing disk(10), attached to the both lower sides of the body(2) and supporting the rear wheel(4) so as to rotate the latter(4); a high-speed gear(20) and a low-speed gear(30), both of which are concentrically mounted inside the rear wheel(4); a brake drum(40), mounted on the periphery of the fixing disk(10) in a rotatable manner; a first gear(50), axially installed in the center of the brake drum(40); a second gear(60), having a one-way clutch(C) which is axially installed in one side of the brake drum(40) so as to prevent a backward rolling of the walking support machine, and engaged with the first gear(50); a control knob(70), mounted inside the fixing disk(10) in a rotatable manner, and selectively engaging the first and second gears(50,60) with the high- and low-speed gears(20,30); and a pair of brake pads, built in the brake drum(40) so as to be tensioned by a spring, and rotated together with the first gear(50). |
