The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2024
Filed:
Sep. 15, 2020
Nissan Motor Co., Ltd., Yokohama, JP;
Hiroki Ichihara, Kanagawa, JP;
Tomoya Tojo, Kanagawa, JP;
Kensuke Ikehara, Kanagawa, JP;
Takashi Tanabe, Kanagawa, JP;
Katsutoshi Nakamura, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama, JP;
Abstract
A lower link () is provided with an oil hole () in a crank pin bearing portion () in order to supply a jet of oil to a connecting portion between an upper pin () and an upper link (). Oil hole () is composed of a first oil hole () linearly extending from the inner peripheral surface of crank pin bearing portion () outwardly in the radial direction, and a second oil hole () linearly extending from the outer surface of lower link () so as to intersect a distal end portion of first oil hole (). An inclination angle (θ) of first oil hole () with a divided surface () set as a reference becomes relatively small, and hence the position of an oil inlet () involving a problem of stress concentration becomes closer to divided surface () exhibiting a relatively low stress. Consequently, the stress concentration at oil inlet () is alleviated.