Method for carrying out a multiple gear-shifting in an electronically servo-assisted bicycle gearshift and related gearshift
First Claim
Patent Images
1. A method for electronically servo-assisting an electronically servo-assisted bicycle gearshift, comprising the step of:
- a) actuating a multiple gear-shifting to move a chain in a gear-shifting direction with respect to a gearshift group having at least three toothed wheels, from a current toothed wheel to a target toothed wheel not immediately adjacent to the current toothed wheelwherein step a) includes the steps of;
b) actuating a single gear-shifting to move the chain to a toothed wheel immediately adjacent to the current toothed wheel in the gear-shifting direction,c) repeating step b) until said immediately adjacent toothed wheel is the target toothed wheel.
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Abstract
An electronically servo-assisted gearshift actuates a multiple gear-shifting that moves a chain from a current toothed wheel to a target toothed wheel not immediately adjacent to the current toothed wheel in a gearshift group having at least three toothed wheels. Actuating the multiple gear-shifting takes several steps (i) actuating a single gear-shifting to move the chain to a toothed wheel immediately adjacent to the current toothed wheel in the gear-shifting direction, and (ii) repeating step (i) until the immediately adjacent toothed wheel is the target toothed wheel.
64 Citations
41 Claims
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1. A method for electronically servo-assisting an electronically servo-assisted bicycle gearshift, comprising the step of:
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a) actuating a multiple gear-shifting to move a chain in a gear-shifting direction with respect to a gearshift group having at least three toothed wheels, from a current toothed wheel to a target toothed wheel not immediately adjacent to the current toothed wheel wherein step a) includes the steps of; b) actuating a single gear-shifting to move the chain to a toothed wheel immediately adjacent to the current toothed wheel in the gear-shifting direction, c) repeating step b) until said immediately adjacent toothed wheel is the target toothed wheel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for electronically servo-assisting an electronically servo-assisted bicycle gearshift, comprising the steps of:
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a) waiting to receive a gear-shifting request, b) establishing whether the gear-shifting request is a single gear-shifting request or a multiple gear-shifting request, h1) wherein if the gear-shifting request is a single gear-shifting request, a bicycle chain is moved from a starting toothed wheel to a target toothed wheel immediately adjacent to the starting toothed wheel in the gear-shifting direction, h2) if it is a multiple gear-shifting request, the chain is moved from a current toothed wheel to a target toothed wheel not immediately adjacent to the current toothed wheel, wherein a step gear-shifting moves the chain to a toothed wheel immediately adjacent to the current toothed wheel in the gear-shifting direction, and this step gear-shifting occurs until said immediately adjacent toothed wheel is the target toothed wheel. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A program for electronically servo-assisting a bicycle gearshift comprising program code means suitable to carry out shifting multiple gears, wherein the program is carried out on a processor, embodied in at least one micro-controller, the program carrying out the step comprising:
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a) actuating a multiple gear-shifting to move a chain in a gear-shifting direction with respect to a gearshift group having at least three toothed wheels, from a current toothed wheel to a target toothed wheel not immediately adjacent to the current toothed wheel; wherein step a) of actuating a multiple gear-shifting comprises the steps of; b) actuating a single gear-shifting to move the chain to a toothed wheel immediately adjacent to the current toothed wheel in the gear-shifting direction; c) repeating step b) until said immediately adjacent toothed wheel is the target toothed wheel.
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28. An electronic circuit suitable to carry out a method for electronically servo-assisting an electronically servo-assisted bicycle gearshift, comprising the step of:
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a) actuating a multiple gear-shifting to move a chain in a gear-shifting direction with respect to a gearshift group having at least three toothed wheels, from a current toothed wheel to a target toothed wheel not immediately adjacent to the current toothed wheel; wherein step a) of actuating a multiple gear-shifting comprises the steps of; b) actuating a single gear-shifting to move the chain to a toothed wheel immediately adjacent to the current toothed wheel in the gear-shifting direction; c) repeating step b) until said immediately adjacent toothed wheel is the target toothed wheel.
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29. An electronically servo-assisted bicycle gearshift, comprising:
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a chain and toothed wheels system for the transmission of motion from the axle of the pedal cranks to a driving-wheel of the bicycle, said motion transmission system comprising at least one gearshift group having at least three toothed wheels coaxial along an axis (X) selected among the axle of the pedal cranks and the axis (A) of the driving-wheel, said at least one gearshift group comprising a guide element to move the chain into engagement with a predetermined toothed wheel of the gearshift group and an actuator of the guide element, an electronic control unit suitable to drive the actuator of the at least one gearshift group, said unit executing the steps of a) actuating a multiple gear-shifting to move the chain in a gear-shifting direction with respect to the gearshift group, from a current toothed wheel to a target toothed wheel not immediately adjacent to the current toothed wheel wherein step a) of actuating a multiple gear-shifting comprises the steps of; b) actuating a single gear-shifting to move the chain to a toothed wheel immediately adjacent to the current toothed wheel in the gear-shifting direction, c) repeating step b) until said immediately adjacent toothed wheel is the target toothed wheel. - View Dependent Claims (30, 31, 32, 33)
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34. An electronic bicycle gearshift for shifting multiple gears comprising:
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a processor that controls an actuator that controls the movement of a chain guide element; a chain that engages one of at least three adjacent toothed wheels on a bicycle and is movable by the chain guide element; wherein when the processor receives a signal to shift between a current toothed wheel that the chain engages to a non-adjacent target toothed wheel, the processor directs the chain guide element to move the chain so that it engages each toothed wheel between the current toothed wheel and the target toothed wheel until the chain engages the target toothed wheel.
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35. An electronic bicycle gearshift for shifting multiple gears comprising:
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a chain that engages one of at least three adjacent toothed wheels on a bicycle and is movable by a chain guide element; a processor that controls an actuator that controls the movement of the chain guide element, the processor storing logic values that represent the physical locations of toothed wheels, and at least one logic value that represents the physical location of the actuator; wherein when the processor receives a signal to shift between a current toothed wheel that the chain engages to a non-adjacent target toothed wheel, the processor directs the chain guide element to move the chain so that it engages each toothed wheel between the current toothed wheel and the target toothed wheel until the chain engages the target toothed wheel. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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Specification