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External motor

An external motor and casing technology, applied in outboard propulsion devices, propulsion device engines, propulsion components, etc., can solve the problems of high manufacturing cost, complex mold structure, and reduced bottom cover rigidity.

Inactive Publication Date: 2006-11-08
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of sliding cores, the overall mold structure is relatively complex and the manufacturing cost is high
Another issue is that the size of the hole should be as small as possible, because the presence of the hole reduces the rigidity of the bottom cover

Method used

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Experimental program
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Effect test

Embodiment Construction

[0036] With reference now to the drawings and in particular figure 1 , which shows an outboard motor or motor 1 according to the invention. Outboard motor 1 generally includes an engine 2, housing means or structure 4, 5, 13 and 14 for supporting engine 2 and its associated components, and housing means or structure 10 forming an engine compartment 12 in which engine 2 may be mounted. In this specification, the terms "front" and "rear" refer to the direction of motion of the boat on which the outboard motor 1 is installed. Similarly, in some of the views, the designations "Fr" and "Rr", respectively associated with hollow arrows, are used to denote "forward direction" and "rearward direction", respectively, when viewed from the direction of motion of the ship.

[0037] The engine 2 is a vertical multi-cylinder engine with a vertically arranged crankshaft 2a. The engine 2 in the illustrated embodiment has four cylinders 2b arranged vertically side by side and placed horizonta...

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PUM

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Abstract

An outboard motor has a bottom cover (30) forming a lower portion of an engine compartment in which an engine can be mounted. The bottom cover has: a pair of right and left cover parts (31, 32) that can be detachably connected together along its opposite vertical sides (40a, 40b); An opening (33) through which the engine can be accessed. The openings are vertically spaced from the horizontal sides (31p, 32p) of the bottom cover (30) and extend continuously from the vertical sides of the at least one cover. A cover plate (51) made of elastic material is connected to the outer surface of the bottom cover to close the opening of the bottom cover, and the cover plate can be elastically deformed to open and close the opening.

Description

technical field [0001] The present invention relates generally to outboard motors, and more particularly to outboard motors having a housing structure forming an engine compartment in which an engine may be mounted. Background technique [0002] The outboard motor is attached to the stern of the boat by a stern bracket, so the outboard motor can swing sideways about a vertical axis and tilt up and down about a horizontal axis. The outboard motor has an engine for driving the propulsion means to propel the boat through the propeller of the propulsion means. The engine, engine accessories, drive shaft, gear mechanism and propeller are supported by a casing device or assembly, and the engine is covered by a casing device or structure. [0003] The shell structure forms the engine compartment where the engine can be installed. The housing structure includes a top cover covering the upper part of the engine, and a bottom cover covering the lower part of the engine and the mount...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H20/00B63H20/32F02B61/04F02B75/20
CPCB63H20/32F02B61/045F02B75/20F02B2275/18
Inventor 安田丰司矢崎诚松田佳之芳贺延夫大角雅之
Owner HONDA MOTOR CO LTD