Patent ID: 6170682
Filing Date: 2001-01-09
Classification: B61G,B62D

Abstract:
An under-frame structure comprising:a first coupling member secured rigidly to a first car and projecting from said first car to a second car;,a bearing inner ring disposed on the first coupling member and secured rigidly to said first coupling member;a bearing outer ring disposed through a roll means on the outer peripheral side of said bearing inner ring;a coupling intermediate member which is disposed on the upper side of said bearing outer ring and to which said bearing outer ring is rigidly secured;a second coupling member rigidly secured to said second car and projecting from said second car toward said first car to grip mounting arms of said coupling intermediate member; andsaid mounting arms of said coupling intermediate member being integral with a generally discoid body segment of said coupling intermediate member but positioned below a top end face of said body segment and projecting radially from either side of said body segment wherein the body segment of the coupling intermediate member has a central part displaced in an axially upward direction to form a flat top end face.