Patent ID: 7703787
Filing Date: 2010-04-27
Classification: B62K,B62M

Abstract:
1. A cap member for attaching to a rear end of a swing arm which supports a rear wheel of a vehicle, said cap member comprising: a tubular outer peripheral wall portion having an outer surface shape which is approximately continuously connected to said outer surface shape of the swing arm; an end wall portion which closes a rear end side of said tubular outer peripheral wall portion, said end wall portion having a generally convex and rounded outer surface shape which is approximately continuously connected to said outer surface shape of said tubular outer peripheral wall portion in a longitudinal direction of the swing arm; an inner portion surrounded by said tubular outer peripheral wall portion and said end wall portion so as to form a cavity; and a drain hole formed as a concave groove, said drain hole being arranged so as to communicate an internal space of the swing arm with an external portion of the swing arm, wherein said cap member has an outer surface shape which is approximately continuously connected to an outer surface shape of the swing arm and is rounded in a longitudinal direction of the swing arm, and wherein said drain hole is disposed at a lower end portion of a front end surface of said cap member such that a thru-hole is formed between said cap member and a rear end of the swing arm, said thru-hole allowing fluid communication between an interior of the swing arm and an exterior of the swing arm.