| 摘要 |
A braking system for a wheel (112) of a wheelchair, wheeled walking frame or any other mobile load bearing frame has a brake pad actuating arm (108) which is pivotable about a pivot pin (110) which is at a first fixed reference location with respect to the wheel (112) and a brake pad (114) mounted on the actuating arm for frictionally engaging the wheel. There is a lever arm (116) which is pivotable about a pivot pin (118) which is at a second fixed reference location with respect to the wheel (112). A brake cable means (120) is connected to the lever arm (116) for pivotally moving the lever arm (116) from a first position to a second position where it urges against the actuating arm (108), the cable means (120) being manually operable by brake cable actuating means, such as a handbrake grip lever or touch lever arm operating a solenoid. Operation of the actuating means causes the cable means (120) to pivotally move the lever arm (116) to the second position against the force of a spring (100), whereby the actuating arm (108) is urged to pivotally move so that the brake pad (114) mounted thereon frictionally engages the wheel (112). |
