RU2616889C1 - Wheeled-tracked wheelchair for disabled people - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: in wheeled-tracked wheelchair for disabled people, containing side driving wheels with an auxiliary drive, the devices transmitting the rotation from the actuator axis to the driving wheel rim, the wheel rims with external engagement gears, connected by the embracing bus-caterpillar, the mechanism of orientation and fixing the wheel-rims in relation to the chair; the device transmitting the rotation from the actuator axis to the driving wheel rim is designed as a double-lever carrier associated in the upper point with the driving wheel axle and in the lower points bearing the wheel-rollers of internal engagement with the driving wheel rim, the inner wheel-roller is connected by a semiaxis with the chair, the outer wheel-roller is associated by the semi-axis with the lever on which the wheel-rims are mounted, one of which is made coaxial to the wheel-rollers.

EFFECT: expanding the functionality of the wheelchair on common stairways ensuring the simultaneous wheeled and tracked movement.

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Description

The invention relates to self-propelled trackless vehicles, including wheelchairs with electric and servo control for the disabled.

Known / see US Pat. No.2328259 (class A61G 5/06) dated 04/02/2007 / wheelchair for disabled people on a wheel-caterpillar track, containing lateral drive wheels, devices for transmitting rotation from the drive axis to the drive wheel rim, wheel rims with gears external gearing connected by an enclosing tire-caterpillar, the mechanism of orientation and fixation of the rim wheels in relation to the seat.

In the known prototype wheelchair, the drive wheels form a pair of rims with external gears, connected by a gear-drive roller and covering the rims with a caterpillar track, there are also two self-orientated driven wheels mounted on the ends of the spring rocker arm, which complicates the possibility of using the chair -wheels on the flights of stairs.

In order to expand the functionality of a wheelchair on public flights in a wheelchair for people with disabilities on a caterpillar track, which contains drive wheels that are lateral with an independent drive, rotation transmission devices from the drive axis to the drive wheel rim, and rim wheels with external gears gearing connected by a female caterpillar, the mechanism of orientation and fixation of the wheel rims in relation to the seat, the transmission of rotation from the drive axis to the rim of the drive wheel is made in the form of a double lever the carrier connected at the upper point to the axis of the driving wheel and bearing the lower gear wheels of the internal gears with the rim of the driving wheel, the internal gear wheel is connected by a half-axis to the seat, the external roller-wheel is connected by a half-axis with a lever on which the rim wheels are mounted, one of which is made of coaxial castor wheels.

The technical solution proposed by the invention is illustrated in FIG. 1 (cross section of a wheelchair), FIG. 2 (a simplified side view of the wheelchair in the horizontal movement mode), FIG. 3 (simplified side view of a wheelchair from the corner entry side) and FIG. 4 (simplified side view of a wheelchair on a flight of stairs).

The wheelchair-crawler-accessible wheelchair according to the invention comprises side-wheel drive wheels 1 with self-contained drive, rotation transmission devices from the drive axis to the drive wheel rim, wheel rims with external gears connected by a female caterpillar, orientation and fixing mechanism wheel rims in relation to the seat. The device for transmitting rotation from the axis of the drive to the rim of the driving wheel 1 is made in the form of a double-lever carrier 2, connected at the upper point with the axis 3 of the driving wheel 1 and bearing at the lower points of the internal gear wheels-rims of the driving wheel 1, the inner wheel-roller 4 is connected by a half-axis to the seat 5, the outer wheel-roller 6 is connected by a half-axis with a lever 7, on which rim-wheels 8 are mounted, one of which is made coaxial to the wheels-rollers (4 and 6). At the same time, the mechanism of orientation and fixing of the rim wheels 8 on the lever 7 with respect to the seat 5 (see Figs. 2, 3 and 4) is not disclosed here, as it constitutes the author's know-how.

Wheelchair for disabled people on a wheel-caterpillar track of the proposed design works as follows. For driving around the apartment, entering the elevator, leaving the elevator, turning and turning (including on the street), the pairs of wheels-rims 8 on the lever 7 are oriented and fixed in relation to the chair 5 as in FIG. 1-fig. 2. To enter into rotation on supporting surfaces with a large value of the coefficient of resistance to rotation of tire tracks, a pair of wheel rims 8 on the lever 7 from the turning side is oriented and fixed with respect to the seat 5 as in FIG. 1-fig. 3. For ascent or descent by a public flight of stairs, the pairs of wheels-rims 8 on the lever 7 are oriented and fixed in relation to the seat 5 as in FIG. 1-fig. four.

The drive is turned on (not shown in FIG.), Providing the required torque from the storage battery AB on the driving wheels 1 and rim wheels 8 covered by the caterpillar tire (not shown in FIG.), And the wheelchair starts moving simultaneously on the wheel and caterpillar, including the public flight of stairs.

Thus, according to the applicant, the invention is new, has an inventive step and is industrially applicable.

Claims (1)

Wheelchair for disabled people on a wheel-caterpillar track, containing drive wheels laterally with an independent drive, rotation transmission devices from the drive axis to the drive wheel rim, wheel rims with external gears connected by a female caterpillar track, wheel alignment and fixing mechanism - rims in relation to the seat, characterized in that the device for transmitting rotation from the axis of the drive to the rim of the drive wheel is made in the form of a double-lever carrier connected at the upper point with the axis of the driving wheel and bearing at the lower point Wheel clips internal engagement with the rim of the drive wheel, the inner wheel-associated roller semiaxis the chair, the outer wheel-roller associated with the semi-axis arm on which are mounted wheel-rims, one of which is made coaxial wheels-rollers.

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