Elasticity-Adjustable Corrugated Cavity Fluid Pressure Spring Structure

A compression spring with a corrugated fluid chamber capable of elasticity adjustment, characterized in that:

• a main structure comprising a resilient tube body, a top and a bottom panel units enclosing said resilient tube body to form a sealed chamber, said chamber connected to one or more elastic structures outside said chamber through a channel, a valve unit is provided inside said channel and is capable of holding an excessive fluid, wherein said channel and said chamber are thoroughly connected, wherein said resilient tube body is a corrugated body defining a crest portion, a trough portion and a remaining portion excluding said crest portion and said trough portion, and a rigid frame structure can be mounted on said crest portion and said trough portion such that a wall thickness of said remaining portion is smaller for facilitating an expansion action, wherein when said chamber is filled with a fluid and is pressed along an axial direction of said chamber to change an internal pressure of the fluid inside said chamber, said remaining portion of said resilient tube body is deformed and a volume of said remaining portion is increased to hold a larger amount of fluid or the excessive fluid is forced to flow through said channel to said elastic structure outside said chamber, thereby causing a deformation of said chamber along the axial direction;
• wherein a rope unit can be provided inside the chamber through connecting said top and said bottom panel units by two ends of said rope unit, when said chamber is filled with the fluid, said rope limits the compression spring from expanding along the axial direction to define a particular length range for use to serve as a particular use, said valve unit is controlled before or during the use of said compression spring to allow the fluid to enter into said chamber from outside or to exit said chamber so as to adjust the internal pressure of the fluid inside said chamber, thereby the control of elasticity along the axial direction is realized.