| 摘要 |
PROBLEM TO BE SOLVED: To provide a bellows which is light in weight, suitable for in use as an actuator, improves pressure resistance, and can cope with a compression force and tensile strength applied in an axial direction by changing a shape of a contour of a cylinder part of the bellows into a shape suitable for receiving a load which is imposed, or directly attaching a reinforcing part to a bellows part, or forming a part of the bellows suitable for the attachment while solving a problem that a main body portion of a conventional bellows is formed of metal, resin, coated cloth or the like having a uniform thickness, and a reinforcing ring, an implement for constraining a length or the like is attached if necessary, and used.SOLUTION: There is provided a bellows having pressure resistance which has been achieved merely in an expensive metal-made bellows by devising a shape of a resin-made bellows main body, and the weight reduction and size compaction of an apparatus becomes possible by making the bellows main body possess a function necessary for constraining a length.SELECTED DRAWING: Figure 14 |
