| 摘要 |
A coupling device adapted for use with floor maintenance machines of the type used for floor brushing, buffing, polishing, scrubbing or the like and which facilitates the coupling of a maintenance element (i.e., brush, buffing disk or the like). The device comprises an annular plate member having a circular opening adapted to receive a circular drive hub carried by the machine drive shaft with the drive shaft having radially projecting lugs that are adapted to pass through radially extending arcuate recesses formed in the plate member so as to lockably engage behind the plate member. On one side of the coupling device, a first series of inner peripheral cam-like ramps communicate with one end of the arcuate recesses and on the opposite of the plate member, a second series of inner peripheral cam-like ramps communicate with the opposite ends of the arcuate recesses. The second series of ramps are carried by fingers that are capable of flexing and have extending portions that ensure asnug and stable fit between the coupling device and the circular drive hub carried by the machine drive shaft.
|
