The present invention has been made in an effort to provide a hollow drive shaft and a method for manufacturing the same in which the concentrated load to a weak point which may be occurred by differences of sectional thicknesses and outer diameters is dispersed so that the strength may be uniform throughout the whole length. A hollow drive shaft includes: one or more small-diameter portion having a hollow shape; and a large-diameter portion which is disposed in the vicinity of the small-diameter portion and has an outer diameter relatively greater than the small-diameter portion. A sectional thickness of the large-diameter portion is less than a sectional thickness of the small-diameter portion, and a first sectional portion from an outer surface to a point corresponding to 35% to 60% of a sectional thickness of the large-diameter portion is carburized to have a first hardness.
HOLLOW DRIVE SHAFT AND METHOD FOR MANUFACTURING SAME
HOHLANTRIEBSWELLE UND VERFAHREN ZUR HERSTELLUNG DAVON
ARBRE D'ENTRAÎNEMENT CREUX ET SON PROCÉDÉ DE FABRICATION
26.05.2021
Patent
Elektronische Ressource
Englisch
Hollow drive shaft for vehicle and manufacturing meathod of the same
Europäisches Patentamt | 2016
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