公开(公告)号：US20170370462A1

公开(公告)日：2017-12-28

申请号：US15191999

申请日：2016-06-24

Applicant: SHIMANO INC.

Inventor： Kenichi AKANISHI

IPC: F16H55/30 ,  B62M9/00

CPC classification number: F16H55/303 ,  B62M9/00

Abstract: A bicycle sprocket comprises a sprocket body and a plurality of chain-driving teeth. The plurality of chain-driving teeth comprises a first tooth and a second tooth. The first tooth has a first maximum chain-engaging width defined in an axial direction parallel to the rotational center axis. The second tooth has a second maximum chain-engaging width defined in the axial direction. The first tooth has a first width defined in the axial direction. The first width is defined at a reference position radially outward spaced apart from a center point of a reference line by 1.5 mm. The reference line is defined to connect centers of neighboring pins of the bicycle chain engaged with the plurality of chain-driving teeth when viewed from the axial direction. The first width is 70% or more of the first maximum chain-engaging width.

公开(公告)号：US20190101188A1

公开(公告)日：2019-04-04

申请号：US15719570

申请日：2017-09-29

Applicant: SHIMANO INC.

Inventor： Kenichi AKANISHI ,  Atsuhiro EMURA ,  Yuta MIZUTANI ,  Tsuyoshi FUKUMORI

IPC: F16G13/06 ,  B62M9/00

Abstract: A bicycle-chain outer link plate comprises a first outer-link end portion, a second outer-link end portion, and a first outer-link intermediate portion. The first outer-link end portion comprises a first outer-link opening and a first outer-link end outermost edge. The second outer-link end portion comprises a second outer-link opening and a second outer-link end outermost edge. The first outer-link intermediate portion comprises a first outer-link intermediate outermost edge and a first additional outer-link intermediate outermost edge. The first outer-link intermediate portion has a first distance defined in an axial direction on a first outer-link longitudinal axis. The first outer-link intermediate outermost edge has a second distance defined in the axial direction. The first outer-link end outermost edge has a third distance defined in the axial direction. The first distance is larger than the second distance and the third distance. The second distance is larger than the third distance.

公开(公告)号：US20190101189A1

公开(公告)日：2019-04-04

申请号：US15719573

申请日：2017-09-29

Applicant: SHIMANO INC.

Inventor： Kenichi AKANISHI ,  Atsuhiro EMURA ,  Yuta MIZUTANI

IPC: F16G13/06 ,  B62M9/00

Abstract: A bicycle-chain outer link plate comprises a first outer-link end portion, a second outer-link end portion, and a first outer-link intermediate portion. The first outer-link end portion comprises a first outer surface, a first inner surface, a first outer-link opening, and a first outer-link outermost edge. The first outer-link intermediate portion comprises a first intermediate outer surface, a first intermediate inner surface, a first outer-link intermediate outermost edge, a first additional outer-link intermediate outermost edge, and a first intermediate chamfer. The first intermediate chamfer has a first minimum distance defined between the first outer-link intermediate outermost edge and the first inner edge along a reference line. A distance defined between the first outer-link intermediate outermost edge and the first additional outer-link intermediate outermost edge on the reference line is minimum in the first outer-link intermediate portion. The first minimum distance is equal to or larger than 1 mm.

公开(公告)号：US20200088286A1

公开(公告)日：2020-03-19

申请号：US16692830

申请日：2019-11-22

Applicant: Shimano Inc.

Inventor： Kenichi AKANISHI

IPC: F16H55/30 ,  B62M9/00 ,  B62M9/02

Abstract: A bicycle sprocket is basically provided with a sprocket body and a plurality of chain-driving teeth. The sprocket body includes a central portion, an annular portion and an intermediate portion. The central portion has a central opening through which the rotational center axis passes and a plurality of internal splines for engaging external splines of a crank arm. The annular portion is disposed radially outward from the central portion with respect to the rotational center axis. The intermediate portion extends between the central portion and the annular portion in a radial direction about the rotational center axis. The plurality of chain-driving teeth extends radially outward from the annular portion of the sprocket body to engage with a bicycle chain. The sprocket body and the plurality of chain-driving teeth are formed as a one-piece, unitary member.

公开(公告)号：US20180178880A1

公开(公告)日：2018-06-28

申请号：US15390687

申请日：2016-12-26

Applicant: SHIMANO INC.

Inventor： Kenichi AKANISHI ,  Atsuhiro EMURA ,  Sota YAMAGUCHI ,  Toshinari OISHI

IPC: B62M9/10 ,  F16H55/30

CPC classification number: B62M9/10 ,  B62M9/12 ,  F16H55/30

Abstract: A bicycle sprocket comprises a sprocket body and chain-driving teeth. The chain-driving teeth comprises at least one first tooth and at least one second tooth. The at least one first tooth has a first circumferential tooth-length defined in a circumferential direction at a radial location defined in vicinity of a reference line. The at least one second tooth has a second circumferential tooth-length defined in the circumferential direction at the radial location. The first circumferential tooth-length is larger than the second circumferential tooth-length. A dimensional difference between the first circumferential tooth-length and the second circumferential tooth-length is equal to or smaller than 1 mm.

公开(公告)号：US20200040979A1

公开(公告)日：2020-02-06

申请号：US16052561

申请日：2018-08-01

Applicant: SHIMANO INC.

Inventor： Kenichi AKANISHI ,  Atsuhiro EMURA ,  Shingo SHIRAISHI

IPC: F16H55/12 ,  F16H55/30 ,  B62M9/00

Abstract: A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, a mounting member, at least one fastening member, and a cover member. The sprocket body has at least one first threaded portion. The mounting member has at least one fastening hole configured to be aligned with the at least one first threaded portion in the assembled state. The at least one fastening member has a fastening shaft portion, a fastening head portion, and a second threaded portion. The second threaded portion is configured to threadedly engage with the at least one first threaded portion of the sprocket body in the assembled state. The cover member is configured to at least cover the fastening shaft portion of the at least one fastening member when viewed from an axial direction with respect to the rotational center axis in the assembled state.

公开(公告)号：US20180347680A1

公开(公告)日：2018-12-06

申请号：US15684634

申请日：2017-08-23

Applicant: Shimano Inc.

Inventor： Kenichi AKANISHI

IPC: F16H55/30 ,  B62M9/00

CPC classification number: F16H55/30 ,  B62M1/36 ,  B62M3/00 ,  B62M9/00 ,  B62M9/02

Abstract: A bicycle sprocket is basically provided with a sprocket body and a plurality of chain-driving teeth. The sprocket body includes a central portion, an annular portion and an intermediate portion. The central portion has a first end surface disposed around a central opening on a side surface of the intermediate portion. The annular portion is disposed radially outward from the central portion. The intermediate portion extends between the central portion and the annular portion in a radial direction. The chain-driving teeth extend radially outward from the annular portion of the sprocket body to engage with a bicycle chain. The sprocket body includes a rib protruding from the side surface of the intermediate portion. The rib has a second end surface being axially outermost in the intermediate portion. The second end surface is farther away from the center plane than the first end surface in the axial direction.

公开(公告)号：US20180180157A1

公开(公告)日：2018-06-28

申请号：US15390685

申请日：2016-12-26

Applicant: SHIMANO INC.

Inventor： Kenichi AKANISHI ,  Atsuhiro EMURA

IPC: F16H55/30

CPC classification number: F16H55/30 ,  B62M9/12

Abstract: A bicycle sprocket comprises a sprocket body and chain-driving teeth. The chain-driving teeth each have a first axial surface, a second axial surface, a driving surface, and a non-driving surface. The chain-driving teeth comprises at least one first tooth and at least one second tooth. The at least one first tooth has a first maximum chain-engaging width defined in the axial direction. The at least one second tooth has a second maximum chain-engaging width defined in the axial direction. The first maximum chain-engaging width is larger than the second maximum chain-engaging width. The at least one second tooth includes a first chamfer provided between the first axial surface of the at least one second tooth and the driving surface of the at least one second tooth.

公开(公告)号：US20170370460A1

公开(公告)日：2017-12-28

申请号：US15192028

申请日：2016-06-24

Applicant: SHIMANO INC.

Inventor： Kenichi AKANISHI

IPC: F16H55/30 ,  B62M9/10

CPC classification number: F16H55/30 ,  B62M9/10

Abstract: A bicycle sprocket comprises a sprocket body and a plurality of chain-driving teeth. The plurality of chain-driving teeth comprises a first tooth and a second tooth. The first tooth has a first radial length radially defined from a reference line to a first radially outermost end. The second tooth has a second radial length radially defined from the reference line to a second radially outermost end. The second radial length is in a range of 1.5 mm to 2.9 mm. A shortest distance is defined between the downstream circumferential surface and a first intersection point of the circumferential center plane and an additional reference line. The shortest distance is equal to or larger than 2.0 mm. The additional reference line is defined at a reference position radially outward spaced apart from the reference line by 1.5 mm.