Patent ID: 11939909
Assignee: HONDA MOTOR CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A work machine comprising a bottom portion cover forming a portion of a casing of a generator,
the bottom portion cover comprising:
a plurality of strengthening structure portions formed substantially perpendicular to a bottom surface of the bottom portion cover; and
a plurality of drain holes, each of which is located in a connecting portion connecting the bottom surface of the bottom portion cover and an associated one of the plurality of strengthening structure portions,
each of the plurality of strengthening structure portions having an upper portion located over the plurality of drain holes, wherein
the plurality of strengthening structure portions includes a lattice portion formed in a lattice shape and includes: two first strengthening structure portions extending in parallel to each other and a second strengthening structure portion intersecting with and being substantially orthogonal to the two first strengthening structure portions,
the plurality of drain holes comprises:
a first drain hole formed in the lattice portion at a position of intersection of one of the two first strengthening structure portions and the second strengthening structure portion,
a second drain hole formed at a location in which the lattice portion is not formed, in a substantially middle portion of a further second strengthening structure portion in a longitudinal direction of the further second strengthening structure portion,
the bottom portion cover is located at a bottom portion of the casing of the generator to support an engine of the generator,
the plurality of strengthening structure portions are formed between engine-retaining structure portions for supporting the engine, the engine-retaining structure portions being formed on the upper surface of the bottom portion cover.