Engine-driven working machine

Patent metadata

Field	Value
Publication number	US-10280837-B2
Application number	US-201715454473-A
Country	US
Kind code	B2
Filing date	Mar 9, 2017
Priority date	Mar 16, 2016
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

An engine-driven working machine capable of decreasing the number of components is provided. An engine-driven working machine 10 is a generator in which an outer case 12 is formed to extend in a longitudinal direction, and an engine 15 and a muffler 67 are housed in an inside 13 of the outer case 12. In the generator 10, a crankshaft 41 is disposed to intersect the longitudinal direction of the outer case 12. A cooling fan 17 is provided on an extension line 73 of the crankshaft 41. Further, a fan cover is provided at the cooling fan 17 side. Further, a shroud 82 is provided at an opposite side from the fan cover 81.

First claim

What is claimed is:

1. An engine-driven working machine in which an outer case is formed into a substantially rectangular shape in plan view to extend in one direction, an engine that is housed in an inside of the outer case, and a muffler that is provided on an inside of the outer case and on a side of the engine relative to the one direction,
wherein the engine is disposed so that a crankshaft of the engine is disposed to be orthogonal to the one direction of the outer case,
the engine-driven working machine comprising:
a cooling fan that is provided on an extension line of the crankshaft;
a cover unit that is housed in the outer case and houses the engine, wherein
the cover unit comprises a fan cover and a shroud,
the fan cover is a part of the cover unit at one side of the engine, and covers the cooling fan and a cooling fan side of the engine, and

the shroud is a part of the cover unit at an other side of the engine, and has
a side wall that covers the engine at a side opposite to the cooling fan,
a front wall that projects toward the engine from the side wall and covers the engine at a side opposite to the muffler, wherein
the front wall guides cooling air from the cooling fan toward a cylinder, which is disposed above the crankshaft, and
the side wall guides cooling air that has cooled the cylinder toward the muffler.

2. The engine-driven working machine according to claim 1 , further comprising:
an undercover that is disposed under the fan cover and the shroud, and includes a first support portion that is provided at one end side in the one direction of the outer case, and a second support portion that is provided at an other end side in the one direction of the outer case,
wherein the fan cover and the shroud have
first mounting means that is mountable to the first support portion, and
second mounting means that is mountable to the second support portion.

3. An engine-driven working machine in which an outer case is formed in a substantially rectangular in plan view to extend in a longitudinal direction, an engine is housed in an inside of the outer case, and a muffler is provided on one side of the engine in the longitudinal direction on an inside of the outer case,
wherein the engine is disposed so that a crankshaft of the engine is disposed to extend in a lateral direction of the outer case,
the engine-driven working machine comprising:
a cooling fan that is provided on one side of the engine in the lateral direction;
a cover unit that is housed in the outer case and houses the engine, wherein
the cover unit comprises a fan cover and a shroud, wherein
the fan cover is a part of the cover unit at the one side of the engine, and covers the cooling fan and the one side of the engine,
the shroud is a part of the cover unit at an other side of the engine in the lateral direction, and the shroud has a side wall that covers the engine at a side opposite to the cooling fan, and a front wall that projects toward the engine from the side wall and covers the engine at a side opposite to the muffler, wherein
the front wall guides cooling air from the cooling fan toward a cylinder disposed above the crankshaft, and
the side wall guides cooling air that has cooled the cylinder toward the muffler.

Assignees

• Honda Motor Co Ltd

Inventors

• Kai Masashi
• Koyama Hiroshi

Classifications

• F02B63/048

  Portable engine-generator combinations · CPC title

• F01P5/06

  Guiding or ducting air to, or from, ducted fans · CPC title

• F02B63/044 Primary

  the engine-generator unit being placed on a frame or in an housing · CPC title

• F01P5/04 Primary

  Pump-driving arrangements · CPC title