Obstacle-free doorknob / Furniture

Obstacle-free doorknob is convenient for adults, children and disabled people in wheelchairs using.
The ordinary doorknob is designed referencing the size of normal adults, which is inconvenient for children and the disabled in height. There is much inconvenience when applied to Children and the disabled people using, and may also have negative psychological impact to the disabled.
The upper and the lower ends of the obstacle-free doorknob can be opened by pushing and pulling, so as to be applied to different crowds.