SU1475662A1 - Wheelchair - Google Patents

Abstract

The invention relates to the means for self-movement of persons with disabilities. The purpose of the invention is to enhance the functionality by providing autonomous control of the drive wheels and reducing the vibration of the wheels when driving. The stake consists of frame 1, seat 2, back 3, steps 4, armrests 5, leading 6 and 7 driven wheels, drives: from rocking levers 8, chain gears 11, shock absorbers 15, one-way clutches. As the levers of the pawl of the lever move (swing), they interact with the windows of the large sprocket 13, the movement through the chain is transmitted to the small sprocket 12, the clutch and further to the drive wheel. The braking of the kolki is through a button, rod, brake dog of swinging levers and a window of a large asterisk. Rotate the pusher through the rotary knob 9 levers 8, the cable and the traverse. 7 il.

Description

314

on the yoke 17 with respect to the axis of rotation 18 with fixed axles with freely rotating wheels 7. By applying a cable to — one of the drums from the other drum the cable coils on the same LENGTH. As each of the drums with a cable fixed on it lies on , some distance from the axis of rotation of the lever and reciprocates along an arc of a circle with a radius, different lengths of the short arm of the lever 8, for damping these vibrations, a magazine of zero rollers 27 with a radius of rotation of the cables is taken contact with grooves equal to zero. The cables are tensioned by the springs 23s placed in the arms 9 of the levers 8, twisted 1-2 turns.

Claims (1)

Invention Formula Handicapped wheelbarrow containing frame, seat, backrest, footrest, armrests, two driving and two driven wheels, swing arms with turning arms and cables, five In order to expand its functionality by providing autonomous control of the drive wheels and reducing vibration of the driving wheel, it is equipped with two chain drives, each of which contains a small and large sprocket, an additional swing lever and shock absorbers in the form of compression springs, the driving wheels are made with functional one-way clutches, the driven wheels are mounted on a traverse connected via an axis to the frame, a small sprocket is mounted on the friction clutch one stroke, a large sprocket is made with radial windows and mounted on an axis fixed to the frame; the swinging lever is made with two spring-loaded dogs, a torsion spring, a stem with a button and a drum, and the spring-loaded dogs interlock with radial windows of a large sprocket, a stem with a button - with one of the spring-loaded dogs, and the handle of the turn is connected by a cable with a traverse through 5 Q of the leverage and the block .. 0 FIG. 2 Aa PhieZ bb b turned Fig.C /five FIG. B Compiled by V.Sobchuk Editor N.Gorvat Tekhred L.Oliynyk Proofreader E.Lonchakova Order 2099/9 Circulation 644 VNIISH State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 Fi.U 13 RieL Subscription