Patent ID: 8807504

Claim:
A diameter acceptance mechanism for a cup holder, comprising: a base fixed to the cup holder and having an open part facing a cup insertion part of the cup holder; a contact member supported movably into and out from said open part of said base, and projecting into said cup insertion part adapted to contact with an outer perimeter of a cup inserted into the cup insertion part; and an urging device disposed between said base and said contact member, for urging said contact member in a direction to project from said open part; wherein the contact member includes at least: a hollow first flap member supported movably into and out from said open part of said base and having a projection orifice facing said cup insertion part; and a second flap member fitted into a hollow part of said first flap member and supported movably into and out from said projection orifice, the second flap member projecting from said projection orifice adapted to contact with the outer perimeter of the cup inserted into said cup insertion part, wherein said first flap member includes slots, and said second flap member includes shafts projecting outwardly from side surfaces of the second flap member and slidably engaging the slots so that when the second flap member is pushed into the first flap member, the shafts enter inside the slots, and said urging device is a coil spring having a coil portion retained in the first flap member, a first end contacting the base, and a second end contacting the second flap member.