| 摘要 |
The present invention relates to a mechanism capable of making variation in radial angle, in particular, to a mechanism wherein variations in the angle of rotation of a particular component would result in the variations in radial angle of another component. By such arrangement, the acting area of the mechanism can be radially extended or retracted. The mechanism comprises primarily a swing bar, an extendable bar, a push bar, a rotatable bar, a connecting bar, a support bar, and a plurality of fulcrums. In the mechanism, the swing bar and rotatable bar are provided with a fixed fulcrum each such that these bars can only swing about the fixed fulcrums. The remaining components are coupled to each other by means of movable pivots, so that the swing bar may change its angle of rotation to extend the extendable bar radially. If the extendable bar is replaced by an extendable plate, an extended area extending in the radial direction will result.
|
