| 摘要 |
PURPOSE: A linear actuator is provided to reduce the manufacturing cost by entirely compacting the size of an equipment and not installing the components such as an upper and a lower supporting member and a connecting ring. CONSTITUTION: A driving unit(100) which is a linear actuator generating power by installing in a non-lubricated pulsatory pipe cooler, installs a frame(101) that is a monolith. A cylinder unit(102) of which the lower diameter is wider than the upper diameter, is formed in the upper center of the frame. A sleeve(104) fitted by press a linear bearing(103) for supporting the straight reciprocating motion of a piston(140), is inserted into the low part of the cylinder unit to keep the inner diameter of the cylinder unit in the same state, so as to be combined inside the frame by a combining member(106c). The piston which pumps working gas, is integrally formed in the upper end of a driving shaft(130).
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