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公开(公告)号：US10479441B2
公开(公告)日：2019-11-19
申请号：US15245131
申请日：2016-08-23
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto
IPC: B62M6/50 , B62M11/16 , B60B27/00 , B62M6/60 , B62M25/08 , B62L5/00 , B60B27/02 , B60B27/04 , B62J99/00 , B62L5/10
Abstract: A bicycle hub assembly includes a hub shell including a braking surface. A coaster brake shoe is accommodated in the hub shell and cooperates with the braking surface to generate braking force. A motor is accommodated in the hub shell and configured to be controlled for at least changing or maintaining a gear ratio.
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公开(公告)号：US10407129B2
公开(公告)日：2019-09-10
申请号：US15379458
申请日：2016-12-14
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto
IPC: F16H3/66 , B62M11/14 , B62M6/55 , B62M9/02 , B62M11/06 , B62M11/16 , F16H37/02 , F16H57/08 , B62M11/18 , F16H55/08
Abstract: A bicycle gear change mechanism includes a first gear including first teeth and a second gear including second teeth. Each of the first teeth includes a first surface and a second surface. The first surface defines a first pressure angle. The second surface defines a second pressure angle. The first pressure angle differs from the second pressure angle. Each of the second teeth includes a third surface and a fourth surface. The third surface defines a third pressure angle. The fourth surface defines a fourth pressure angle. The third pressure angle differs from the fourth pressure angle. The second gear engages the first gear.
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公开(公告)号：US11628685B2
公开(公告)日：2023-04-18
申请号：US16832338
申请日：2020-03-27
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto
Abstract: A human-powered vehicle wheel unit adapted to be attached to a human-powered vehicle hub. The wheel unit includes an accommodation portion and a first engagement portion. The accommodation portion is configured to accommodate at least part of the human-powered vehicle hub. The first engagement portion is provided on the accommodation portion. The first engagement portion is configured to transmit rotation of the human-powered vehicle hub to the accommodation portion through engagement with a second engagement portion provided on a flange projecting from an outer circumferential portion of a hub shell of the human-powered vehicle hub.
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公开(公告)号：US11203396B2
公开(公告)日：2021-12-21
申请号：US15054877
申请日：2016-02-26
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto , Hiroyuki Urabe , Yusuke Nishikawa
Abstract: A bicycle drive unit is basically provided with an input rotational shaft, an output part, a transmission mechanism, an assist motor and a switching mechanism. The transmission mechanism has at least two shift stages, and is configured to change a speed of a rotational input that is input from the input rotational shaft and output this rotational input to the output part. The assist motor is coupled to a power transmission path from the input rotational shaft to the output part, and is driven according to a manual drive force. The switching mechanism is configured to switch a gear changing state of the transmission mechanism by using a rotational force of the assist motor.
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Patent Agency Ranking
公开(公告)号：US10351209B2
公开(公告)日：2019-07-16
申请号：US15897491
申请日：2018-02-15
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto , Hiroyuki Urabe , Kai Ikeda
Abstract: A bicycle shifting device includes a first shifting mechanism, a transmission mechanism, and a setting mechanism. The setting mechanism sets paths in the transmission mechanism to transmit rotation from an input body to an output body at transmission ratios of at least three steps. The transmission mechanism establishes a first path transmitting the rotation at one of first and second transmission ratios by changing a rotational speed with the first shifting mechanism, and a second path transmitting the rotation at a greater transmission ratio than the first and second transmission ratios by changing the rotational speed with a different shifting mechanism from the first shifting mechanism. The first path includes first and second planetary mechanisms. The setting mechanism sets the transmission mechanism so that the rotational speed is not changed by the first planetary mechanism in the second path.
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公开(公告)号：US10266229B2
公开(公告)日：2019-04-23
申请号：US15412552
申请日：2017-01-23
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto
Abstract: A bicycle controller limits decreases in the assist force when the rotational speed of a crank changes. The bicycle controller can be mounted on a bicycle including a first transmission having at least two shift stages and configured to change a ratio of rotation of a wheel to rotation of a crank, a motor that provides assistance to human power input to the crank, and a second transmission configured to transmit a rotation force from the motor to a power transmission path extending from the crank to the wheel without changing the ratio of the rotation of the wheel to the rotation of the crank. The bicycle controller includes an electronic control unit that controls the second transmission in accordance with a condition of the bicycle and either one of a condition of the first transmission and a shift instruction to the first transmission.
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公开(公告)号：US10137961B2
公开(公告)日：2018-11-27
申请号：US15348256
申请日：2016-11-10
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto
Abstract: A bicycle drive unit has a planetary gear mechanism, a switching mechanism, a motor and a housing. The planetary gear mechanism includes an input body, an output body and a plurality of transmission paths having different transmission ratios between the input body and the output body. The switching mechanism is configured to switch between the plurality of transmission paths. The motor is configured to transmit rotational force to the input body. The housing rotatably supports a crankshaft and on which are provided the planetary gear mechanism, the switching mechanism and the motor. A manual drive force that is input to the crankshaft joins with a rotational force that is output from the output body of the planetary gear mechanism in a transmission path of a driving force from the output body of the planetary gear mechanism to a wheel.
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公开(公告)号：US10994802B2
公开(公告)日：2021-05-04
申请号：US16513050
申请日：2019-07-16
Applicant: Shimano Inc.
Inventor： Takashi Yamamoto
Abstract: A bicycle transmission device basically includes an input rotational shaft, an output part, a transmission mechanism and a switching mechanism. The transmission mechanism includes a first rotating body configured to transmit rotation of the input rotational shaft and a fourth rotating body configured to transmit the rotation of the input rotational shaft. The switching mechanism is configured to selectively switch between a first state in which a ratio of a rotational speed of the output part to a rotational speed of the input rotational shaft is a first ratio and a second state in which the ratio is a second ratio that is different from the first ratio. The switching mechanism includes a one-way clutch and a switching unit.
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公开(公告)号：US09994284B2
公开(公告)日：2018-06-12
申请号：US14871679
申请日：2015-09-30
Applicant: Shimano Inc.
Inventor： Hioryuki Urabe , Tetsuya Hino , Takashi Yamamoto
CPC classification number: B62M6/55 , B60K17/06 , B60L11/007 , B60L11/18 , B60L15/2045 , B60L15/2054 , B60L2200/12 , B60L2240/12 , B60L2240/423
Abstract: A bicycle assist unit is basically provided with a transmission and an assist motor. The transmission is configured to receive rotation of a crankshaft. The transmission includes a planetary gear mechanism. The planetary gear mechanism includes an output unit, a plurality of ring gears and a rotation restricting mechanism that selectively restricts rotation of the ring gears. The assist motor is configured to output a second drive force that is added to a first drive force that is outputted from the transmission on a power transmission path between the output unit and a front sprocket that is attached to the crankshaft.
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