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公开(公告)号：US20230202614A1
公开(公告)日：2023-06-29
申请号：US18118398
申请日：2023-03-07
Applicant: Shimano Inc.
Inventor： Satoshi SHAHANA , Hayato SHIMAZU , Mitsuhiko KAWASAKI , Atsuhiro EMURA
Abstract: A human-powered vehicle includes a crank axle, a first rotational body, a wheel, a second rotational body, a transmission body that transmits a driving force between the first rotational body and the second rotational body, a derailleur configured to operate the transmission body to change a transmission ratio, a motor configured to drive the transmission body and an electric actuator configured to operate the derailleur. A control device has an electronic controller configured to control electric actuator and the motor. The electronic controller is configured to control the electric actuator and drive the transmission body with the motor so that the transmission ratio is changed in a predetermined shifting range in upon determining the derailleur has been actuated to change the transmission ratio and a predetermined condition related to pedaling is satisfied.
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公开(公告)号：US20220204127A1
公开(公告)日：2022-06-30
申请号：US17480873
申请日：2021-09-21
Applicant: Shimano Inc.
Inventor： Satoshi SHAHANA , Akira INOUE , Akinobu SUGIMOTO , Atsuhiro EMURA , Nobukatsu HARA , Hitoshi TAKAYAMA , Shingo SAKURAI
IPC: B62M6/50 , B62J45/415 , B62L3/00 , B62J45/414
Abstract: A control device is provided for a human-powered vehicle. The control device includes an electronic controller that is configured to control a motor that assists in propulsion of the human-powered vehicle. The electronic controller is configured to control the motor in accordance with a pitch angle of the human-powered vehicle and information related to a user load applied by a user to the human-powered vehicle in a negative direction with respect to a propulsion direction of the human-powered vehicle.
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公开(公告)号：US20210324941A1
公开(公告)日：2021-10-21
申请号：US17359640
申请日：2021-06-28
Applicant: SHIMANO INC.
Inventor： Tsuyoshi FUKUMORI , Atsuhiro EMURA
Abstract: 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 first inner-link end portion overlaps with a tooth of a sprocket when viewed in the axial direction to provide an overlapping area in a state where the bicycle chain is engaged with the sprocket. The overlapping area has a maximum circumferential length equal to or larger than 0.45 mm.
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公开(公告)号：US20190359285A1
公开(公告)日：2019-11-28
申请号：US15989162
申请日：2018-05-24
Applicant: SHIMANO INC.
Inventor： Atsuhiro EMURA , Yasufumi FUKUNAGA , Tsuyoshi FUKUMORI
Abstract: A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, and at least one upshifting facilitation area. The plurality of sprocket teeth extends radially outwardly from the sprocket body with respect to the rotational center axis. The plurality of sprocket teeth includes at least one axially recessed upshifting initiation tooth. The at least one axially recessed upshifting initiation tooth includes a driving surface, a non-driving surface and a tooth tip portion. The non-driving surface includes a non-driving surface protrusion disposed radially inwardly from a non-driving surface side tooth tip end with respect to a rotational center axis. The non-driving surface protrusion has a protrusion tip disposed closer to the second axially-facing surface than the non-driving-surface-side tooth tip end in the axial direction so that a guiding slope extends from the protrusion tip toward the first axially-facing surface.
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公开(公告)号：US20190100278A1
公开(公告)日：2019-04-04
申请号：US15719576
申请日：2017-09-29
Applicant: SHIMANO INC.
Inventor： Tsuyoshi FUKUMORI , Atsuhiro EMURA
Abstract: A bicycle chain comprises a first outer link plate and a second outer link plate. A first outer-link longitudinal axis extends through a first outer-link center axis and a second outer-link center axis to divide a first outer surface into a first side and a second side when viewed in an axial direction. A second outer-link longitudinal axis extends through a third outer-link center axis and a fourth outer-link center axis to divide a second outer surface into a third side and a fourth side when viewed in the axial direction. The fourth side includes a first circumferential area and a first chamfer free area. The first circumferential area has a first angle equal to or larger than 20 degrees. The first chamfer free area is adjacent to the first circumferential area. At least one second chamfer is provided outside the first chamfer free area.
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Patent Agency Ranking
公开(公告)号：US20190084649A1
公开(公告)日：2019-03-21
申请号：US15705484
申请日：2017-09-15
Applicant: SHIMANO INC.
Inventor： Yasufumi FUKUNAGA , Atsuhiro EMURA
Abstract: A bicycle sprocket comprises a plurality of sprocket teeth including at least one first tooth and at least one second tooth. The at least one first tooth has a first non-driving surface including a first non-driving surface portion and a second non-driving surface portion so that a first ridge is formed between the first non-driving surface portion and the second non-driving surface portion. The at least one second tooth is configured to initially engage with the bicycle chain in a shifting operation. The at least one second tooth is disposed adjacent to the at least one first tooth. The at least one second tooth has a second non-driving surface including a third non-driving surface portion and a fourth non-driving surface portion so that a second ridge is formed between the third non-driving surface portion and the fourth non-driving surface portion.
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公开(公告)号：US20190084645A1
公开(公告)日：2019-03-21
申请号：US15705401
申请日：2017-09-15
Applicant: SHIMANO INC.
Inventor： Atsuhiro EMURA
Abstract: A bicycle rear sprocket comprises a sprocket body and a plurality of sprocket teeth. The plurality of sprocket teeth includes a plurality of first teeth. Each tooth of the plurality of first teeth has a driving surface and a non-driving surface provided on a reverse side of the driving surface in a circumferential direction with respect to the rotational center axis. Each tooth of the plurality of first teeth has an axial maximum tooth-width and an axial driving-surface tooth-width. The axial maximum tooth-width is defined in an axial direction of the rotational center axis as a maximum width in each tooth of the plurality of first teeth. The axial driving-surface tooth-width is smaller than the axial maximum tooth-width. The plurality of first teeth accounts for at least 25% of the plurality of sprocket teeth.
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公开(公告)号：US20190061873A1
公开(公告)日：2019-02-28
申请号：US15686113
申请日：2017-08-24
Applicant: SHIMANO INC.
Inventor： Hiroshi FUJITA , Atsuhiro EMURA , Yasufumi FUKUNAGA , Tsuyoshi FUKUMORI
Abstract: 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：US20190016412A1
公开(公告)日：2019-01-17
申请号：US15650672
申请日：2017-07-14
Applicant: Shimano Inc.
Inventor： Atsuhiro EMURA , Shouta SUYAMA
IPC: B62M9/126
CPC classification number: B62M9/126 , B62M9/1242 , B62M9/1248 , B62M25/02 , B62M2009/12406
Abstract: A bicycle rear derailleur is basically provided with a chain guide and an indicator. The chain guide includes a guide pulley. The indicator is provided on the chain guide such that the indicator disposed on or in an outer periphery of the chain guide. The indicator is indicative of a setting position of an outer circumference of a sprocket of a bicycle rear sprocket assembly relative to the guide pulley.
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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
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.
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