US 6,619,253 B2 · Case member mounting structure

Abstract

In a case member mounting structure for mounting a chain case to an engine body, the chain case is fastened to the engine body by a number of bolts applied along the outer edges thereof and by bolts applied to portions in a central region thereof. The chain case has a plurality of central fastening boss portions in a central region of the inner wall surface, and bolt fastening holes are formed in the respective central fastening boss portions. An annular connection wall is formed in a projecting fashion to connect the central fastening boss portions such that the chain case is affixed to the engine body by putting the connection wall and the central fastening boss portions in abutment with the engine body. As a result, it is possible to fasten the chain case with fewer fastening bolts, enhance the rigidity of the central region of the chain case and prevent its vibrations.

Claims20

Dependent claims

A case member mounting structure for mounting a case member to a machinery body, comprising:

outer edge fastening means for fastening an outer edge region of said case member to said machinery body;
and
center fastening means for fastening a central region of said case member to said machinery body, said center fastening means being located entirely on a side of said central region apart from said outer edge region and including:
a plurality of central mounting portions formed on an inner surface of said case member;
and
a raised connection wall connecting said central mounting portions,
said case member being mounted to said machinery body by bringing said connection wall and said central mounting portions into abutment with said machinery body.

4 more elements

Dependencies are inferred from the claim text.

Case member mounting structure

Life of this patent

Case member mounting structure

Life of this patent

Abstract

Claims20