| 摘要 |
A gas spring assembly for use in opening and closing a hinged deck lid of an automotive vehicle. The gas spring includes a fluid containing cylinder having a closure at one end and a plunger rod carrying a piston slidably supported in the other end for reciprocating movement between an extended lid opening position and a retracted lid closing position. An elongated hollow boot is secured to and surrounds the portion of the plunger rod extending from the cylinder, as well as a portion of the cylinder, and is movable in unison with the plunger rod for protectively containing the extended plunger rod portion in both extended and retracted positions. When installed on a vehicle body, the gas spring further includes a temporary heat shrink sheath tightly surrounding the boot for insuring a tight seal between the end of the boot and cylinder and for further protecting the gas spring from chemicals or other contaminants to which the vehicle is exposed during metal pretreatment processes following assembly of the gas spring on the vehicle body. The heat shrink sheath is destructible and readily removable from the boot and cylinder upon exposure to relatively high temperatures, such as occurs during bake-oven treatments of a vehicle following such metal pretreatment processes, leaving the boot as a permanent protector of the extendable plunger rod.
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