A manual wheelchair is one of the most important and common rehabilitation aids, which has been frequently used by the elderly and disabled people. With the progress and development of society, the wheelchair has developed from a mere mobility tool for the disabled to a means for the elderly and disabled to exercise, take care of themselves and participate in society, playing an important role in enabling them to return to society and increase their self-confidence. Next, let's take a look at the quality requirements of a manual wheelchair together.
Here is the list of contents:
Surface, appearance, and quality requirements
Assembly
Performance
Surface, appearance, and quality requirements
The manual wheelchair is composed of various parts, and the standard has provisions for the outer surface of each part, chrome-plated parts, galvanized parts, anodized parts, painted surfaces, and welded surfaces. The surface is generally required to be smooth and even in color, without visible defects such as sharp edges, cracks, and air holes, and the end of each pipe hole should be capped. This can protect patients from scrapes and bruises during use. In addition, the standard also stipulates the maximum external dimensions and quality of the manual wheelchair, which is based on the user's operational convenience to avoid difficulties in the use or transportation of the wheelchair.
Assembly
The production of a manual wheelchair is assembled from various parts that have been processed. The standard makes requirements for wheelchair rims (rims), spokes, tires, transmission mechanism, pedals, and other components, as well as for all rotating and moving parts after assembly, radial runout, and end runout of the rims and hand rims. If the assembly requirements are not qualified, it will directly affect the use of the wheelchair and even pose a danger to the user. For example, if the radial runout and end runout of the wheel rim (rim) is greater than the standard requirement of 4mm, the wheelchair will have obvious bumps or swaying while driving; if the angle between the footrest and the footrest clip is greater than the standard requirement of 90˚, the footrest will sag inward, which may cause the patient's feet to slip into the middle of the two footrests and cause injuries during use.
Performance
The performance indicators of the manual wheelchair as stipulated in the standard include: wheel landing, static stability (longitudinal leaning forward, leaning backward, and leaning sideways), slope holding performance, glide offset, minimum turning radius, and minimum change of direction width.
Wheel landing is a requirement that when one of the wheels is lifted 20mm, the remaining three wheels must land smoothly. Otherwise, when the manual wheelchair is driven on an uneven surface, it may cause operational difficulties and accidents due to the wheels not hitting the ground.
Static stability is a test of the angle at which the manual wheelchair tilts forward, backward, or sideways. According to the requirements of the standard, it is necessary to test the tipping angle of the manual wheelchair in the most and least stable state, with and without wheel brakes, and with or without anti-tip devices, to ensure that the wheelchair does not tip over under various conditions and at a certain tilt angle.
The standing slope performance is to test the tilt angle when the manual wheelchair is braking and starts to appear in wheel rotation, wheel slip, and other wheelchair movement conditions, and is an important parameter to examine the braking performance of the wheelchair vehicle.
Glide offset is to test the distance that the wheelchair vehicle deviates from the original straight wheel position after gliding a certain distance in the free gliding state. If the wheelchair does not pass the skid offset, it will cause the user to drive the wheelchair forward in a straight line, resulting in uneven force and fatigue of both arms, and may even cause the wheelchair to skid off the normal road and cause an accident, which can be said to be a more important indicator of manual wheelchair performance.
The minimum radius of rotation and the minimum width of change of direction are performance indicators that measure the space required to steer the wheelchair, which is especially important for indoor types or wheelchairs that need to operate in a smaller space.
The above is about the quality requirements of manual wheelchairs. If you are interested in a manual wheelchair, you can contact us, our website is www.topmediwheelchair.com.
