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Patent Searching and Data


Title:
BUSH OF CONNECTING ROD
Document Type and Number:
Japanese Patent JP2018054041
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a bush capable of restricting occurrence of seizure between the bush of a connecting rod and a piston pin even in the case of an engine in which an inner pressure of a cylinder is increased.SOLUTION: A bush 40 which is provided along the inner peripheral surface of a small end hole of a connecting rod, and into which a piston pin is slidably inserted, comprises: an oil guide groove 43 which communicates with an oil guide hole 42 for introducing lube oil into the small end hole and is provided on a sliding surface with the piston pin while including a part along a circumferential direction; and a microstructure portion 44 provided in a main load portion L occupying a fixed range of the sliding surface and provided with a plurality of minute oil grooves along a first direction. An extending direction of at least a part of the oil guide groove 43 and the first direction are not parallel to each other. The oil guide groove 43 and at least a part of the minute oil grooves communicate with each other. The main load portion L includes at least a region which is a part of the sliding surface and where a load by a piston pin based on an operation of the piston in a descending stroke acts.SELECTED DRAWING: Figure 3

Inventors:
USUI SHOICHIRO
SHIMOKAWA KIYOHIRO
OHARA SO
NAGAYOSHI MANABU
Application Number:
JP2016191911A
Publication Date:
April 05, 2018
Filing Date:
September 29, 2016
Export Citation:
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Assignee:
HINO MOTORS LTD
International Classes:
F16C9/04; F16C17/02; F16C33/10
Attorney, Agent or Firm:
長谷川 芳樹
黒木 義樹
川井 夏樹