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公开(公告)号：US09863462B2
公开(公告)日：2018-01-09
申请号：US15377282
申请日：2016-12-13
发明人： Shiho Tanaka , Motohiko Koushima
CPC分类号： F16C9/02 , F16C17/04 , F16C17/10 , F16C33/046 , F16C33/122 , F16C2240/30 , F16C2360/22
摘要： There is provided a half thrust bearing having a semicircular-ring shape for a crankshaft of an internal combustion engine, including a back metal layer and a bearing alloy layer having a slide surface on which thrust reliefs are formed adjacently to both circumferential end surfaces so that a wall thickness of the half thrust bearing becomes thinner from the slide surface toward the circumferential end surfaces. A thrust relief length L1 of each thrust relief extends over a circumferential angle θ1 from the circumferential end surface toward a circumferential central portion, and is constant between an inside end portion and an outside end portion in a radial direction of the half thrust bearing. A flat surface of each thrust relief includes a first region on the circumferential end surface side and a second region on the circumferential central portion side.
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公开(公告)号：US09797435B2
公开(公告)日：2017-10-24
申请号：US14964912
申请日：2015-12-10
发明人： Shiho Tanaka , Yoshihiro Ozawa
CPC分类号： F16C9/02 , F16C17/04 , F16C17/10 , F16C33/046 , F16C33/1065 , F16C33/1075 , F16C2240/30 , F16C2240/40 , F16C2360/22
摘要： A bearing device, including a crankshaft, a pair of half bearings each having crush reliefs formed adjacent to both circumferential ends thereof, a bearing housing in which a retaining hole is formed for retaining the pair of half bearings, and one half thrust bearing having a semi-annular shape arranged adjacent to the retaining hole. The half thrust bearing includes thrust reliefs formed adjacent to both circumferential end portions of a sliding surface receiving an axial force of the crankshaft so that its wall thickness is made thinner toward the circumferential end surface, and a thrust relief length at an inner end portion of the thrust relief positioned on a rear side in the crankshaft rotational direction is formed to be larger than a thrust relief length at an inner end portion of the thrust relief positioned on a front side in the crankshaft rotational direction.
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公开(公告)号：US10006490B2
公开(公告)日：2018-06-26
申请号：US15198386
申请日：2016-06-30
发明人： Shiho Tanaka , Yoshihiro Ozawa
CPC分类号： F16C33/046 , F02F7/0053 , F16C9/02 , F16C17/04 , F16C17/10 , F16C33/206 , F16C43/02 , F16C2240/46
摘要： A half thrust bearing having a semicircular shape includes a thrust bearing body having a slide surface that receives an axial force from a crankshaft, and thrust reliefs formed adjacent to respective end portions of the thrust bearing body. Wall thicknesses of the thrust reliefs decrease to the respective end portions. Each thrust relief length continuously increases in a direction from an inner circumference to an outer circumference of the half thrust bearing. Each thrust relief length is a length, in a direction perpendicular to a plane that includes an end portion of the half thrust bearing, from the plane to a point at which a surface of each thrust relief intersects an inner circumference of the thrust bearing body. The half thrust bearing includes a bearing alloy layer and a resin slide layer, or additionally a back metal layer. The slide surface includes the resin slide layer.
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公开(公告)号：US09856908B2
公开(公告)日：2018-01-02
申请号：US14967800
申请日：2015-12-14
发明人： Shiho Tanaka , Yoshihiro Ozawa
CPC分类号： F16C9/02 , F16C9/04 , F16C17/04 , F16C33/106 , F16C2360/22
摘要： A thrust bearing for receiving an axial force of a crankshaft of an internal combustion engine. The thrust bearing includes a pair of half thrust bearings having a semi-annular shape that form an annular shape by abutting their circumferential end surfaces. Each half thrust bearing include thrust reliefs formed adjacent to both circumferential end portions of a sliding surface receiving the axial force so that a wall thickness is thinner toward the circumferential end surface. A thrust relief length L2 at an inner end portion of the thrust relief positioned on a rear side of one of the half thrust beings in a rotational direction is larger than a thrust relief length L1 at an inner end portion of the thrust relief positioned on a front side of the other of the half thrust bearing in the rotational direction.
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公开(公告)号：US09982709B2
公开(公告)日：2018-05-29
申请号：US14806710
申请日：2015-07-23
发明人： Shiho Tanaka , Yoshihiro Ozawa
CPC分类号： F16C9/02 , F16C17/04 , F16C17/08 , F16C33/046 , F16C2360/22
摘要： The present invention provides a half thrust bearing in a semicircular ring shape for receiving an axial force of the crankshaft of the internal combustion engine, including thrust reliefs formed adjacent to both circumferential end portions of a slide surface which receives the axial force, so that a wall thickness of the half thrust bearing becomes thinner toward the circumferential end portions, wherein at least the thrust relief on a rear side in a rotational direction of the crankshaft has a thrust relief length which becomes larger toward an outer end portion from an inner end portion in a radial direction of the half thrust bearing. The present invention also provides a bearing device including the above half thrust bearing, a crankshaft, a pair of half bearings supporting a journal portion of the crankshaft, and a bearing housing having a holding hole for holding the pair of half bearings.
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公开(公告)号：US09909615B2
公开(公告)日：2018-03-06
申请号：US15246714
申请日：2016-08-25
发明人： Shiho Tanaka , Yoshihiro Ozawa
CPC分类号： F16C9/02 , F16C17/04 , F16C17/10 , F16C33/046 , F16C33/205 , F16C33/206
摘要： The invention provides a thrust bearing, including a pair of half thrust bearings. Each half thrust bearing includes a bearing alloy layer and a resin slide layer, or a back metal layer, a bearing alloy layer and a resin slide layer. The resin slide layer constitutes a slide surface receiving an axial force of a crankshaft. Each half thrust bearing include thrust reliefs formed adjacent to both circumferential end portions of the sliding surface so that a wall thickness is thinner toward the circumferential end surface. A thrust relief length at an inner end portion of the thrust relief positioned on a rear side of one of the half thrust bearings in a rotational direction is larger than a thrust relief length at an inner end portion of the thrust relief positioned on a front side of the other of the half thrust bearing in the rotational direction.
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公开(公告)号：US09909614B2
公开(公告)日：2018-03-06
申请号：US15246672
申请日：2016-08-25
发明人： Shiho Tanaka , Yoshihiro Ozawa
CPC分类号： F16C9/02 , F16C17/04 , F16C17/10 , F16C33/205 , F16C33/206 , F16C2202/50 , F16C2206/40 , F16C2208/42 , F16C2208/44 , F16C2208/60 , F16C2240/60
摘要： The invention provides a bearing device, including a crankshaft, a pair of half bearings each having crush reliefs adjacent to both circumferential ends thereof, a bearing housing having a retaining hole, and one half thrust bearing arranged adjacent to the retaining hole. Each half thrust bearing is configured at least by a bearing alloy layer and a resin slide layer which constitutes a slide surface receiving an axial force of the crankshaft, and thrust reliefs adjacent to both circumferential end portions of the sliding surface so that its wall thickness is made thinner toward the circumferential end surface. A thrust relief length at an inner end portion of the thrust relief positioned on a rear side in the crankshaft rotational direction is formed to be larger than a thrust relief length at an inner end portion of the thrust relief positioned on a front side.
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公开(公告)号：US09188159B2
公开(公告)日：2015-11-17
申请号：US14182623
申请日：2014-02-18
CPC分类号： F16C33/046 , F16C9/02 , F16C17/04 , F16C33/1075 , F16C2360/22
摘要： A half thrust bearing having a semicircular ring shape for receiving an axial force of a crankshaft of an internal combustion engine is provided. The half thrust bearing includes thrust reliefs formed adjacently to end surfaces on both sides in a circumferential direction on a slide surface side which receives the axial force so that wall thicknesses become thinner toward the end surfaces. The thrust relief on a rear side in a rotational direction of the crankshaft or both thrust reliefs are formed so that a length of the thrust relief in an inner end portion in a radial direction of the half thrust bearing is longer than a length of the thrust relief in an outer end portion in the radial direction of the half thrust bearing.
摘要翻译： 提供具有用于接收内燃机的曲轴的轴向力的半圆形环的半推力轴承。 半推力轴承包括在滑动表面侧的圆周方向上在两侧的端面相邻形成的推力浮雕，其承受轴向力，使得壁厚朝向端面变薄。 在曲轴的旋转方向或两个推力凸起的后侧的推力释放形成为使得半推力轴承在径向方向上的内端部中的推力凸起的长度长于推力的长度 在半推力轴承的径向方向上的外端部中的浮雕。
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