| 摘要 |
<p>An actuator for a joint comprises a bladder-shaped chamber (5) whose one end is secured to an arm (2) by a mounting (6), whilst a bundle of fibres (7) extend from the other end of the chamber member (5) to a junction (8) on another arm (3). The rear wall (9) of the chamber member (5) is formed from woven bi-directional fibres (10) whilst the outer wall is defined by an array of high tensile fibres (11), at least some of which extend from the fibre bundle (7). The fibres (7, 10 and 11) are embedded in elastic material. When a pneumatic or hydraulic fluid is pumped through an inlet (12) to the chamber member (5), the latter expands and the fibres (11) bow outwardly, thus pulling on the fibers (7) and raising the arm (3), with the respect to the arm (2), to lift a weight (13).</p> |
