公开(公告)号：US20130251294A1

公开(公告)日：2013-09-26

申请号：US13764871

申请日：2013-02-12

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Osamu ISHIGO ,  Yuichi TOMITA ,  Motohira YAMADA

IPC: F16C9/02

CPC classification number: F16C9/02 ,  F16C9/04 ,  F16C17/022 ,  F16C33/046 ,  F16C33/1065 ,  F16C2360/22

Abstract: A bearing apparatus for a crankshaft of an internal combustion engine having a main bearing and a connecting rod bearing is provided. The main bearing comprises a pair of semi-cylindrical bearings, only one of which has an oil groove extending in a circumferential direction on an inner circumferential surface thereof. The oil groove is separated from an axial groove formed at a joint portion of the semi-cylindrical bearings by a separation inner circumferential surface of which a length L1 in the circumferential direction is smaller than a length L2 of an inlet opening of a journal portion in the circumferential direction. The connecting rod bearing also comprises a pair of semi-cylindrical bearings, and has axial grooves and crush reliefs with appropriate dimensions at joint portions thereof.

Abstract translation: 提供一种具有主轴承和连杆轴承的内燃机的曲轴的轴承装置。 主轴承包括一对半圆柱形轴承，其中只有一个在其内圆周表面上具有沿圆周方向延伸的油槽。 油槽与形成在半圆筒形轴承的接合部的轴向槽分离，其分隔内周面的圆周方向的长度L1小于轴颈部的入口的长度L2 圆周方向。 连杆轴承还包括一对半圆柱形轴承，并且在其接合部分具有适当尺寸的轴向凹槽和挤压浮雕。

公开(公告)号：US20130156358A1

公开(公告)日：2013-06-20

申请号：US13706774

申请日：2012-12-06

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Osamu ISHIGO ,  Yuichi TOMITA ,  Motohira YAMADA

IPC: F02B77/00

CPC classification number: F02B77/00 ,  F16C9/02 ,  F16C17/022 ,  F16C33/1045 ,  F16C33/1065 ,  F16C2240/40 ,  F16C2360/22

Abstract: A main bearing for a crankshaft of an internal combustion engine comprises a pair of semi-cylindrical bearings. An oil groove extends on an inner circumferential surface of one semi-cylindrical bearing in a circumferential direction so that the center thereof in an axial direction aligns with that of an inlet opening of a lubricating oil path in a journal section of the crankshaft. The oil groove does not extend up to an axial direction groove formed at a joint portion of the semi-cylindrical bearings so that a separation inner circumferential surface extends between a circumferential direction end portion of the oil groove and the axial direction groove. The length of the separation inner circumferential surface is smaller than that of the inlet opening in the circumferential direction.

Abstract translation: 用于内燃机的曲轴的主轴承包括一对半圆柱形轴承。 油槽在一个半圆柱形轴承的圆周方向的内圆周表面上延伸，使得其轴向方向的中心与曲轴的轴颈部分中的润滑油路的入口开口对准。 油槽不延伸到形成在半圆柱形轴承的接合部处的轴向槽，使得分离内周面在油槽的圆周方向端部与轴向槽之间延伸。 分离内周面的长度比圆周方向的入口长度小。

公开(公告)号：US20180241287A1

公开(公告)日：2018-08-23

申请号：US15901552

申请日：2018-02-21

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Kwangik NA ,  Motohira YAMADA ,  Shigeyoshi MORI

IPC: H02K9/19 ,  H02K5/16 ,  H02K5/20 ,  H02K7/14 ,  H02K9/06 ,  F16C17/26 ,  F16C17/24 ,  F16C37/00

Abstract: A cooling portion has an air inlet into which cooling air flows and is positioned in a preset range. When a distance from the upper to lower ends of an oil chamber in the axial direction of a rotating shaft member is h, and the shortest distance between an outer peripheral face of a casing and an inner peripheral face of a cover is a, the preset range is set in the following manner. Specifically, the preset range is set between ¼h upward and 5/4h downward relative to the upper end of the oil chamber as a reference point, in the axial direction of the rotating shaft member. Additionally, the preset range is set between the outer peripheral face of the casing and relative to the outer peripheral face of the casing as a reference point, in the radial direction of the rotating shaft member.

公开(公告)号：US20130182981A1

公开(公告)日：2013-07-18

申请号：US13739298

申请日：2013-01-11

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Osamu ISHIGO ,  Yuichi TOMITA ,  Motohira YAMADA

IPC: F16C9/02

CPC classification number: F16C9/02 ,  F16C3/14 ,  F16C17/022 ,  F16C33/046 ,  F16C33/1065 ,  F16C2360/22

Abstract: A main bearing for a crankshaft of an internal combustion engine is composed of a pair of semi-cylindrical bearings. An oil groove extending in a circumferential direction is formed on an inner circumferential surface of one semi-cylindrical bearing. The oil groove has the depth gradually decreasing toward a circumferential end surface of the one semi-cylindrical bearing, and defines a circumferential end portion on the circumferential surface without extending to an axial groove formed in a joint portion of the pair of semi-cylindrical bearings. An extension portion of the inner circumferential surface extends between the circumferential end portion and the axial groove, and a plurality of circumferential grooves extending in the circumferential direction is formed on the extension portion from the oil groove to the axial groove over an entire width of the circumferential end portion of the oil groove.

Abstract translation: 用于内燃机曲轴的主轴承由一对半圆柱形轴承组成。 在一个半圆柱形轴承的内圆周表面上形成沿圆周方向延伸的油槽。 所述油槽的深度朝向所述一个半圆柱形轴承的周向端面逐渐减小，并且在所述圆周表面上限定圆周端部，而不延伸到形成在所述一对半圆柱形轴承的接合部分中的轴向槽 。 内周面的延伸部在周向端部和轴向槽之间延伸，并且在延伸部上形成有从圆周方向延伸的多个周向槽，从而在整个宽度方向上从油槽到轴向槽 油槽的圆周端部。