Your Wheelchair and Mobility Scooter Resource
Wednesday, August 5th, 2009 at 11:25 am
Electric wheelchairs, or power chairs, are today a very important accessibility aid that greatly improves the lives of millions of people every year. While modern power chairs offer similar functionality to the first electric wheelchairs developed almost 60 years ago, their design and reliability has changed a great deal.
One of the biggest changes to the modern power chair is that it now uses a much stronger and more reliable electric motor. The batteries are also much improved, offering a much greater per charge distance. This not only means the wheelchair can be driven further faster, but also that it can support more weight and preform better over uneven terrain. It is not uncommon for an electric wheelchair to be able to travel more than 10 miles on a single charge, with a number of power chairs having a range between 15 and 20 miles. The top speed is also significantly higher, with most power chairs traveling at speeds at or above 5 miles per hour.
While from a functionality and reliability standpoint, having an improved electrical system is one of the biggest differences between modern electric wheelchairs and their predecessors, there are also a significant number of changes involving the design of the device. The original electric wheelchairs were simply manual wheelchairs that had been outfitted with an electric motor and battery. However, today, most electric wheelchairs share a much different design.
This includes a much smaller molded plastic base, which contains the electrical components of the wheelchair. A seat is installed upon this plastic base and is usually referred to as the captain’s chair. Depending on the type of wheelchair, the captain’s chair could be relatively small, or it could resemble a high end office chair, with a high back and extended armrests. In either case, it is much different than the chair used on most manual wheelchairs, which is made out of slats of vinyl.
There are in fact a great number of improvements and changes that have been made to the power chair over the years, many of these mechanical, but the standard electric wheelchair control scheme is the same. This is of course the joystick control system, which is found on most electric wheelchairs. The joystick is attached to the armrest of the wheelchairs chair and allows the power chair to be controlled by only the push of a finger.
There are also a number of alternate wheelchair controls that are commonly used, made available for people who are not able to physically able to use a standard joystick control scheme. There are many different types of controls, often aided by computers, allowing power chairs to be controlled by the angle of ones head, an individuals breath, or other parts of their body’s. For caretakers, there are also several popular remote control systems that can be attached to a standard power chair, allowing the unit to be controlled by someone walking behind it.
Even though the modern power chair shares a number of similarities with the first electric wheelchairs in regards to the functionality, they are actually quite different. Not only do they have a completely different design, but the modern power chair is much more reliable and durable.