| 摘要 |
A tool for expanding flexible rubber boots such as cv boots, bellows and seals for easy mounting over and removal from mechanical joints including a mandrel having a base section with a perimeter having an opening and a plurality of spokes, each spoke being movably arranged with respect of the base section, to move from a first converged angle to a second open angle, and from a second open angle to a converged first angle, opening and closing the mandrel. The base section includes a crenellated rim with slots between adjacent crenellations, and the plurality of spokes are pivotally mounted in the slots between adjacent crenellations of the rim by pins, whereby the spokes can only pivot radially from a closed position to an open position with respect of the base section, and vice versa. A closing device exerts tension on the spokes to maintain the mandrel normally in a closed position and when the mandrel is opened by a drive mechanism in contact with the spokes, the device will urge the mandrel to close as the drive mechanism is retracted from the spokes. |
