| 摘要 |
A method for making a friction damper for linen washing machines which have a damper rod that is telescopically driven inside a mantle, and at least a friction element, arranged between said rod and mantle and housed in a housing cavity therefor. The method is based on a first molding step for molding a friction damper casing having a hole for housing said rod and a friction element housing cavity, and a second operating step for making, in said cavity, a plurality of restraining undercut portions for restraining said friction element. The first and second steps are carried out either simultaneously or in succession, wherein in the first molding step, a mold male element, by operating in an axial direction, provides said hole for housing therein said damper rod abutment there against a bottom portion of said friction element, said housing cavity having an inner surface mating with an outer surface of said friction element for fitting therein said friction element and a plurality of upward open recesses in said housing cavity, said upward open recesses which are made in said first step.
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