| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic type actuator having a superior durability while holding some features such as a simple structure and a light weight.SOLUTION: This invention is constituted by comprising: double inner tubes 1 and 5 of which both ends are sealed with rubber plugs 2, 3 and expanded or shrunk through supplying and discharging of fluid; a mesh sleeve 6 covering outer peripheries of these inner tubes 1, 5 and having both ends fastened and fixed to the rubber plugs 2, 3 together with inner tubes 1, 5 through a fastening ring in which diameters are expanded in response to an expansion of the inner tubes to cause an axial length of the actuator to be shortened; and an air supplying or discharging pipe 4 arranged at the rubber plug 2 at one end thereof. |
