RU12351U1 - QUICK RELEASE LEVER MECHANISM FOR MECHANICAL DISABLED CHAIRS - Google Patents

Description

Quick-release lever mechanism for mechanically disabled people

wheelchairs.

The utility model relates to vehicles for the disabled.

The technical solution RV 2068252 C1 A61G5 / 02 10.27.96 was chosen as an analogue of the nozle model. a wheelchair for the disabled, containing two side frames with front and rear wheels, the axis of rotation of one of the front of the front steered wheels is equipped with a block covered by a cable of rotation drive, the lever of the rear wheel drive of the stroller, connected by a link with the crank mechanism of the wheel drive.

The disadvantages of the described analogue is the lack of increased mobility and maneuverability, as well as the fact that the stationary installation of the wheel drive lever allows it to be used only for this model of wheelchairs for the disabled.

The purpose of the utility model is to create a quick-release lever mechanism for mechanical wheelchairs of various models, allowing you to reduce and regulate muscle loads, INCREASE the simplicity and comfort of control, as well as increase the mobility and mobility of a mechanical wheelchair.

The goal is achieved by the following design features:

Fastness is ensured by the use of a detachable bracket equipped with “wing bolts”, as well as a rim support equipped with

5/.//

A61G5 / 02

threaded bushings moving along the guides of the rim support. The possibility of installing these linkage mechanisms on mechanical wheelchairs of various models with wheels of various diameters is provided by the use of threaded bushings that extend along the guides of the rim support. Reducing muscle load is achieved by transferring force to the rim support through the sprocket and connecting rod, and the ability to adjust muscle load is provided by moving the clamp clip along the lever. Two lever quick-detachable mechanisms independently mounted on a mechanical wheelchair allow you to rotate the rear wheels of a mechanical wheelchair both at different speeds and in different directions, which provides increased mobility and mobility of the wheelchair.

Figures 1 and 2 show sketches of a mechanical wheelchair equipped with two independently mounted quick-release lever mechanisms, which contain: Detachable brackets 1, Bolts - “wing 2, Levers 3,

Clamping clamps 4, Connecting rods 5, Rim bearings 6, Threaded bushings 7, Axles of split brackets 8.

y /. (iV /

The grounded device works as follows: Two independent quick-release lever mechanisms are mounted on a mechanical wheelchair and set in motion by hand.

1. Installation on a carriage:

1.1 Slightly closer to the wheelchair frame:

It is carried out by means of a detachable bracket 1, which has grooves for covering the tubes of the wheelchair frame and which is pulled together with “wing 2.” bolts. This design makes it possible to quickly install and remove the linkage mechanism on various models of wheelchairs without using the tool.

1.2. Mounting to the wheel rim of a wheelchair:

The axis of the detachable bracket 8 serves as a support for the lever 3, which performs pendulum movements around this axis. The lever 3 through the clamping clamp 4 is connected to the connecting rod 5, which in turn is movably connected to the support of the rim 6. The support of the rim has guides along which the threaded sleeves move 7. These threaded sleeves having grooves for the wheel rim of the wheelchair, sliding along the guides rim supports provide reliable inclining of the rim supports to the wheel rims of various diameters of mechanical wheelchairs of various modifications. Installing the rim support on the wheel rim is simple, does not require a tool. Installation time is minimal.

2. Movement of a mechanical wheelchair equipped with two independent quick-release lever mechanisms.

The levers of independent mechanisms are driven by the hands of the wheelchair user. In this case, the translational movement of the levers 3 through the connecting rods 5 and the supports of the rims 6 is converted into the rotational movement of the wheels of the wheelchair. The use of lever mechanisms allows you to reduce the load on the muscles of the hands, shoulders and back compared with the muscle effort that occurs when the method of movement, requiring the rotation of the wheel rims directly with your hands. This increases the clarity of the movement of the stroller.

3. Implementation of new things.

Since the two linkage mechanisms are independently mounted on two different driving wheels of a mechanical wheelchair, they allow the wheels to rotate at different speeds or even in different directions. Thus, the turns of the stroller. Moreover, the radii of the novorot can be minimal, and the movement of the levers that provide the wheels to rotate in different directions allows the wheelchair to turn around. Reducing muscle loads, due to the use of these lever mechanisms, in combination with the independent installation of the lever mechanisms ensures high mobility and mobility of the mechanical wheelchair, and the load can be changed by moving the clamp 4 along the lever 3, thereby changing the shoulder of the applied force.

The advantage of the utility model is:

1. Increase the mobility and maneuverability of a mechanical wheelchair equipped with two independently mounted quick-release lever mechanisms.

2. Simplicity and comfort of driving a mechanical wheelchair.

3. The reduction of muscle loads and the ability to adjust muscle loads.

4.Uversiveness (the ability to install these quick-release linkages on mechanical wheelchairs of various models with wheels of various diameters).

5. Quick detachability (the ability to install and remove these lever mechanisms with minimal loss of time without using a tool).

6. Not a complicated design and the use of non-metal parts of the mechanism slightly) increases the weight of a mechanical wheelchair equipped with two independent linkage mechanisms.

7. Socio-economic effect.

According to the norms of the social protection authorities of the population, wheelchair users must have two wheelchairs: 1- for movement indoors, 2- for movement on the street. The use of quick-release lever mechanisms installed on one wheelchair will allow you to meet the requirements of the standards, which entails cost savings for the purchase, acceptance, storage and issuance of an additional wheelchair, i.e. This utility model replaces two wheelchairs with one.

 g //

Claims (1)

A quick-release lever mechanism for mechanical wheelchairs, comprising a lever connected by a connecting rod to the wheel rim support, characterized in that the lever is fastened to the mechanical wheelchair frame by means of a quick-detachable two-part bracket with grooves to cover the pipes of the mechanical frame wheelchairs and “lamb” tightening bolts, as well as the fact that the rim support is fastened to the wheel rim by means of retractable threaded bushings with a groove and a wheel rim, moving along the guide rim support.