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公开(公告)号：US11078987B2
公开(公告)日：2021-08-03
申请号：US15672229
申请日：2017-08-08
申请人： SHIMANO INC.
发明人： Tsuyoshi Fukumori , Atsuhiro Emura
摘要： A bicycle chain comprises a first inner link plate and a second inner link plate. The first inner link plate comprises a first inner-link end portion, a second inner-link end portion, and a first inner-link intermediate portion. The second inner link plate comprises a third inner-link end portion, a fourth inner-link end portion, and a second inner-link intermediate portion. A first inner-link end edge has a first chamfer extending about the first inner-link center axis such that a part of the first chamfer is disposed in a first circumferential area defined from a first inner-link longitudinal centerline to a first reference line when viewed in an axial direction of the first inner-link center axis. The first circumferential area is smaller than 14 degrees.
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公开(公告)号：US11028916B2
公开(公告)日：2021-06-08
申请号：US16131965
申请日：2018-09-14
申请人： Shimano Inc.
摘要： A bicycle sprocket includes a base body, a first sprocket tooth and a shifting initiation tooth. The first sprocket tooth includes a drive surface including a drive surface side tooth tip end portion, a non-drive surface including a non-drive surface side tooth tip end portion and a tooth tip portion connecting the drive surface side tooth tip end portion and the non-drive surface side tooth tip end portion. The non-drive surface extends circumferentially with respect to the rotational center axis from the non-drive surface side tooth tip end portion toward a first surface. The tooth tip portion extends circumferentially in a first direction between the drive surface side tooth tip end portion and the non-drive surface side tooth tip end portion. The non-drive surface extends circumferentially from the non-drive surface side tooth tip end portion in a second direction that is inclined with respect to the first direction.
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公开(公告)号：US10926836B2
公开(公告)日：2021-02-23
申请号：US15686113
申请日：2017-08-24
申请人： SHIMANO INC.
摘要： A bicycle rear sprocket assembly comprises a sprocket support and a first sprocket. The sprocket support includes a hub engagement part configured to engage with a bicycle hub assembly. The sprocket support includes a plurality of sprocket attachment members extending radially outwardly from the hub engagement part with respect to a rotational center axis of the bicycle rear sprocket assembly. The first sprocket is attached to the plurality of sprocket attachment members. The first sprocket includes a first sprocket body and a plurality of first sprocket teeth which extends radially outwardly from the first sprocket body with respect to the rotational center axis and a total number of which is equal to or larger than thirty-four. The first sprocket has a plurality of shifting facilitation areas. A total number of the plurality of shifting facilitation areas is a divisor of a total number of the plurality of sprocket attachment members.
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公开(公告)号：US20150292597A1
公开(公告)日：2015-10-15
申请号：US14250175
申请日：2014-04-10
申请人： Shimano Inc.
发明人： Tsuyoshi Fukumori
CPC分类号： F16G15/12 , B62M9/00 , B62M2009/005 , F16G13/06
摘要： An outer link plate for a bicycle chain is provided. The outer link plate has an interior surface configured to face another counterpart outer link plate in an assembled state and an exterior surface opposite to the interior surface. The outer link plate has an outer perimeter, and first and second end portions including respective first and second openings each having corresponding parallel center axes. An intermediate portion is provided interconnecting the first end portion and the second end portion. The intermediate portion has an axially recessed portion formed along the outer perimeter on the exterior surface, the intermediate portion having a pair of intermediate edges formed along the outer perimeter, the axially recessed portion being formed on at least one of the intermediate edges and including a chamfered portion connecting the at least one of the intermediate edges to the exterior surface of the outer link plate.
摘要翻译： 提供了一种用于自行车链条的外链板。 外链板具有内表面，该内表面构造成在组装状态下与另一配对外链板相对，外表面与内表面相对。 外链板具有外周边，第一和第二端部包括各自具有对应的平行中心轴线的相应的第一和第二开口。 设置有互连第一端部和第二端部的中间部分。 中间部具有沿着外表面的外周形成的轴向凹部，中间部具有沿着外周形成的一对中间边缘，该轴向凹部形成在至少一个中间边缘上，并且包括一 将所述至少一个所述中间边缘连接到所述外链板的外表面的倒角部分。
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公开(公告)号：US11661141B2
公开(公告)日：2023-05-30
申请号：US16697204
申请日：2019-11-27
申请人： Shimano Inc.
发明人： Naoki Fujimoto , Tsuyoshi Fukumori
IPC分类号： B62M9/1246 , B62M9/1242 , B62M9/1248 , B62M9/126 , B62M9/121 , B62M9/125 , B62M9/124
CPC分类号： B62M9/1246 , B62M9/121 , B62M9/124 , B62M9/125 , B62M9/126 , B62M9/1242 , B62M9/1248 , B62M2009/12406
摘要： A derailleur comprises a base member, a movable member, a linkage structure, a pulley assembly, and a rotational force control structure configured to control rotational force of the pulley assembly relative to the movable member. The pulley assembly is pivotally movable relative to the movable member about a pivot axis in first and second directions. The pulley assembly is configured to move in the first direction upon moving from a second pivotal position toward a first pivotal position. The rotational force control structure includes a cam member having a first cam surface, an abutment member configured to abut the first cam surface, and a biasing member configured to bias the abutment member. The abutment member is configured to abut the first cam surface by the biasing member to apply first additional force to the pulley assembly in the first direction while the pulley assembly is in the first pivotal position.
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公开(公告)号：US11110992B2
公开(公告)日：2021-09-07
申请号：US16431327
申请日：2019-06-04
申请人： SHIMANO Inc.
发明人： Tsuyoshi Fukumori , Takeshi Ueda
摘要： A bicycle transmission control device comprises a controller configured to control an operating speed of a bicycle derailleur based on a running speed of a bicycle and a gear ratio of the bicycle.
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公开(公告)号：US10717495B2
公开(公告)日：2020-07-21
申请号：US15705432
申请日：2017-09-15
申请人： SHIMANO INC.
摘要： A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, an axially outward protuberance, and an axially inward protuberance. The axially outward protuberance is disposed on an outward facing side of the sprocket body to overlap at least partly with a bicycle chain engaging with a neighboring bicycle sprocket when viewed along a rotational center axis. The axially inward protuberance is disposed on an inward facing side of the sprocket body to overlap at least partly with the axially outward protuberance when viewed along the rotational center axis.
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公开(公告)号：US10309515B2
公开(公告)日：2019-06-04
申请号：US15489675
申请日：2017-04-17
申请人： SHIMANO INC.
发明人： Akihiro Ohno , Toshinari Oishi , Tsuyoshi Fukumori
摘要： A bicycle rear sprocket comprises a sprocket body, a plurality of sprocket teeth, a shifting facilitation recess, and an upshifting facilitation projection. The plurality of sprocket teeth extends radially outwardly from the sprocket body. The shifting facilitation recess is to facilitate a shifting operation in which a bicycle chain is shifted between the bicycle rear sprocket and a smaller rear sprocket adjacent to the bicycle rear sprocket without another sprocket between the bicycle rear sprocket and the smaller rear sprocket. The upshifting facilitation projection is provided in the shifting facilitation recess to support the bicycle chain in an upshifting operation in which the bicycle chain is shifted from the bicycle rear sprocket to the smaller rear sprocket.
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公开(公告)号：US09932090B2
公开(公告)日：2018-04-03
申请号：US15168214
申请日：2016-05-30
申请人： SHIMANO INC.
CPC分类号： B62M9/10 , B62M9/12 , F16H55/303
摘要： A bicycle rear sprocket assembly has a rotational center axis. The bicycle rear sprocket assembly comprises a first sprocket and a second sprocket. The first sprocket includes a first sprocket body and a first chain-engagement structure. The first sprocket body is made of a non-metallic material. The first chain-engagement structure is made of a metallic material and is configured to engage with a bicycle chain. The second sprocket includes a second sprocket body and a second chain-engagement structure. The second sprocket body is made of a non-metallic material and attached to the first sprocket body. The second chain-engagement structure is made of a metallic material and is configured to engage with the bicycle chain.
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公开(公告)号：US09919764B2
公开(公告)日：2018-03-20
申请号：US14597516
申请日：2015-01-15
申请人： Shimano Inc.
发明人： Tsuyoshi Fukumori
摘要： A bicycle sprocket includes a sprocket body and a chain engagement structure. The sprocket body has a center rotational axis, a first side surface and a second side surface. The first and second side surfaces face oppositely with respect to an axial direction of the bicycle sprocket. The first side surface is a smaller sprocket facing side of the bicycle sprocket. The chain engagement structure includes a plurality of sprocket teeth extending radially outward from an outer periphery of the sprocket body. The sprocket teeth include at least one shift assist tooth having a recessed portion recessed from the first side surface toward the second side surface. A protuberance is formed in the recessed portion.
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