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公开(公告)号：US11999440B2
公开(公告)日：2024-06-04
申请号：US18300337
申请日：2023-04-13
申请人： SHIMANO INC.
发明人： Satoshi Shahana
摘要： A drive train comprises a sprocket arrangement and a force-transmission coefficient. The sprocket arrangement includes a plurality of rear sprockets and a plurality of gear ratios respectively corresponding to the plurality of rear sprockets. The plurality of gear ratios includes a largest gear ratio and a smallest gear ratio. The sprocket arrangement includes at least one individual sprocket-space provided between two adjacent rear sprockets among the plurality of rear sprockets. The force-transmission coefficient is obtained by dividing a total gear range quotient by a total number of the at least one individual sprocket-space. The force-transmission coefficient is equal to or larger than 0.97 and is equal to or smaller than 1.36. The total gear range quotient is obtained by dividing the largest gear ratio by the smallest gear ratio.
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公开(公告)号：US11975801B2
公开(公告)日：2024-05-07
申请号：US18077343
申请日：2022-12-08
发明人： Henrik Braedt
摘要： A bicycle gearshift mechanism has a base element, a pivot mechanism, a movable element, and a chain guide arrangement. The pivot mechanism connects the base element to the movable element. The chain guide arrangement is connected, rotatably about a rotary axle, to the movable element. The base element comprises a first attachment end, which is coaxial with respect to the rear-wheel axle or axis, and a second attachment end for coupling to the pivot mechanism.
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公开(公告)号：US11884363B2
公开(公告)日：2024-01-30
申请号：US17543299
申请日：2021-12-06
发明人： Markus Reiter , Joachim Hanke , Bryn Johnson , Andreas Vonend , Martin Kehrer , Henrik Braedt , Pedro Miguel Nunes Dos Santos , Luis Figueiredo , Rodrigo Antunes
IPC分类号： B62M9/1242 , F16H55/30 , F16G13/06 , B62M9/1248 , B62M9/126 , B62M9/10 , B62M1/36 , B62M9/00 , F16H55/08 , F16H57/01
CPC分类号： B62M9/1242 , B62M1/36 , B62M9/00 , B62M9/10 , B62M9/105 , B62M9/126 , B62M9/1248 , F16G13/06 , F16H55/08 , F16H55/30 , F16H57/01 , F16H2057/012
摘要： An individual chain wheel for a bicycle front crank arrangement for engaging in a drive chain includes a plurality of teeth formed on a circumference of the chain wheel and having a first and a second group of teeth. The teeth of the second group of teeth are arranged in an alternating manner between the teeth of the first group of teeth. Each tooth has a load flank via which force is transmitted between an adjacent roller of the drive chain and the respective tooth. Each tooth of the first group may also have at least one profile with an opening in the vicinity of the flank, in which a portion of an inner link plate of the drive chain, which portion protrudes beyond the roller, engages.
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公开(公告)号：US20230249782A1
公开(公告)日：2023-08-10
申请号：US18300337
申请日：2023-04-13
申请人： SHIMANO INC.
发明人： Satoshi SHAHANA
摘要： A drive train comprises a sprocket arrangement and a force-transmission coefficient. The sprocket arrangement includes a plurality of rear sprockets and a plurality of gear ratios respectively corresponding to the plurality of rear sprockets. The plurality of gear ratios includes a largest gear ratio and a smallest gear ratio. The sprocket arrangement includes at least one individual sprocket-space provided between two adjacent rear sprockets among the plurality of rear sprockets. The force-transmission coefficient is obtained by dividing a total gear range quotient by a total number of the at least one individual sprocket-space. The force-transmission coefficient is equal to or larger than 0.97 and is equal to or smaller than 1.36. The total gear range quotient is obtained by dividing the largest gear ratio by the smallest gear ratio.
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公开(公告)号：US11697473B2
公开(公告)日：2023-07-11
申请号：US17202298
申请日：2021-03-15
申请人： SHIMANO INC.
发明人： Nobukatsu Hara
IPC分类号： B62M9/124 , B62M9/1242 , B62M9/126 , B62M9/125
CPC分类号： B62M9/124 , B62M9/125 , B62M9/126 , B62M9/1242 , B62M2009/12406
摘要： A bicycle rear derailleur comprises a base member, a linkage structure, a movable member, a first pulley assembly, and a second pulley assembly. The first pulley assembly includes a first pulley support and a first toothed pulley. The first pulley support is pivotally coupled to the movable member about a first pivot axis. The first toothed pulley is rotatably coupled to the first pulley support about a first pulley axis spaced apart from the first pivot axis. The second pulley assembly includes a second pulley support, a second toothed pulley, and a third toothed pulley. The second pulley support is pivotally coupled to the movable member about a second pivot axis. The second toothed pulley is rotatably coupled to the second pulley support about a second pulley axis. The third toothed pulley is rotatably coupled to the second pulley support about a third pulley axis.
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公开(公告)号：US11661142B2
公开(公告)日：2023-05-30
申请号：US16950282
申请日：2020-11-17
发明人： Henrik Braedt
摘要： A bicycle gearshift mechanism has a base element, a pivot mechanism, a movable element, and a chain guide arrangement. The pivot mechanism connects the base element to the movable element. The chain guide arrangement is connected, rotatably about a rotary axle, to the movable element. The base element comprises a first attachment end, which is coaxial with respect to the rear-wheel axle or axis, and a second attachment end for coupling to the pivot mechanism.
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公开(公告)号：US11649875B2
公开(公告)日：2023-05-16
申请号：US17365764
申请日：2021-07-01
申请人： SRAM, LLC
发明人： Joshua Brown , Brian Jordan , Christopher Shipman
摘要： A bicycle rear derailleur has a base member mountable to a bicycle frame, a movable member movably coupled to the base member, a chain guide assembly rotatably connected to the movable member for rotation about a rotational axis, a biasing element configured and arranged to bias the chain guide assembly for rotation in a first rotational direction with respect to the movable member, and a fluid damper having a fluid cavity containing a volume of fluid. The fluid damper is operatively disposed between the chain guide assembly and the movable member to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction opposite to the first rotational direction. The fluid damper has a guide wheel configured to route a chain and rotatable about the rotational axis.
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公开(公告)号：US11364971B2
公开(公告)日：2022-06-21
申请号：US15665322
申请日：2017-07-31
申请人： SHIMANO INC.
发明人： Kenji Kamada
IPC分类号： B62M9/1242 , F16H55/30 , B62M9/10 , B62M9/126
摘要： A bicycle sprocket assembly comprises a plurality of sprockets comprising at least twelve sprockets having different numbers of teeth. The at least twelve sprockets are coaxially arranged along a rotational center axis of the bicycle sprocket assembly. An entire gear range of the plurality of sprockets is equal to or larger than 360%. An average percentage gear stage step of the plurality of sprockets being equal to or larger than 10%. The average percentage gear stage step of the plurality of sprockets is smaller than 15%.
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公开(公告)号：US11077916B2
公开(公告)日：2021-08-03
申请号：US15938699
申请日：2018-03-28
申请人： SHIMANO INC.
发明人： Naoki Fujimoto
摘要： A bicycle chain guide includes a base and a chain guide. The base is configured to be mounted to a bicycle that includes a solitary sprocket having a rotational center axis. The chain guide is disposed above the solitary bicycle sprocket in a mounted state where the base is mounted to the bicycle. The chain guide includes a first guide plate, a second guide plate, and a bridge. The first guide plate has a first guiding surface. The second guide plate is closer to the base than the first guide plate and has a second guiding surface facing the first guiding surface to define a chain guiding slot between the first guiding surface and the second guiding surface. The bridge connects the first guide plate and the second guide plate.
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公开(公告)号：US10882587B2
公开(公告)日：2021-01-05
申请号：US15632945
申请日：2017-06-26
申请人： SRAM, LLC
发明人： Jih-Hung Chang
摘要： A bicycle rear derailleur includes a movable member and a chain guide assembly rotatably connected to the movable member. The bicycle rear derailleur also includes a pivot member non-rotatably coupled to the chain guide assembly and having an outer annular surface, a biasing device configured to bias the chain guide assembly in a first rotational direction relative to the movable member, and a damper device disposed between the chain guide assembly and the movable member. The damper device is operable to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction relative to the movable member. The damper device includes a friction device that is radially inner relative to the biasing device. The friction device includes a friction member having at least one friction surface biased against and in frictional engagement with the pivot member.
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