Bicycle derailleur and method of controlling bicycle derailleur

Abstract

This invention provides a bicycle derailleur, comprising a base member, a movable member, a motor unit, and a controller. The controller is configured to control the motor unit to rotate an output shaft of the motor unit at a first maximum voltage during a first shift operation in a first shift direction. The controller is also configured to control the motor unit to rotate the output shaft of the motor unit at a second maximum voltage during a second shift operation in a second shift direction. The first maximum voltage differs from the second maximum voltage.

Description

Technical Field

[0001] This invention relates to a bicycle gearbox and a method for controlling the bicycle gearbox. Prior Technology

[0002] A bicycle includes a derailleur configured to move a chain relative to a plurality of sprockets. Summary of the Invention

[0003] According to a first aspect of the present invention, a bicycle derailleur includes a base member, a movable member, a motor unit, and a controller. The movable member is configured to be movably coupled to the base member. The movable member is movable relative to the base member from a second gear position to a first gear position to move a chain along a first shift direction. The movable member is movable relative to the base member from the second gear position to the first gear position to move the chain along a second shift direction, the second shift direction being the opposite direction to the first shift direction. The motor unit is configured to allow the movable member to move relative to the base member between the first gear position and the second gear position. The controller is configured to control the motor unit to rotate an output shaft of the motor unit at a first maximum voltage during a first shift operation of the chain along the first shift direction. The controller is configured to control the motor unit to rotate the output shaft of the motor unit at a second maximum voltage during a second shift operation of the chain along the second shift direction. The first maximum voltage is different from the second maximum voltage.

[0004] Using a bicycle derailleur of the first state, the first maximum voltage and the second maximum voltage can be different based on the specifications and / or structure of the bicycle derailleur.

[0005] According to a second embodiment of the present invention, the bicycle derailleur of the first embodiment is configured such that a gear ratio is defined as a quotient obtained by dividing the total number of teeth on a bicycle front sprocket by the total number of teeth on a bicycle rear sprocket. The gear ratio includes a first gear ratio and a second gear ratio smaller than the first gear ratio. In the first shift operation, the gear ratio changes from the second gear ratio to the first gear ratio. In the second shift operation, the gear ratio changes from the first gear ratio to the second gear ratio. The first maximum voltage is higher than the second maximum voltage.

[0006] Using a bicycle gearbox of the second state, the maximum voltage can be increased or decreased when the gear ratio increases or decreases during the shifting operation.

[0007] According to a third embodiment of the present invention, the bicycle derailleur of the first embodiment is configured such that a gear ratio is defined as a quotient obtained by dividing the total number of teeth on a bicycle front sprocket by the total number of teeth on a bicycle rear sprocket. The gear ratio includes a first gear ratio and a second gear ratio smaller than the first gear ratio. In the first shift operation, the gear ratio changes from the second gear ratio to the first gear ratio. In the second shift operation, the gear ratio changes from the first gear ratio to the second gear ratio. The first maximum voltage is lower than the second maximum voltage.

[0008] By using a bicycle gearbox based on the third state, the maximum voltage can be reduced when the gear ratio increases during the shifting operation.

[0009] According to a fourth embodiment of the present invention, a bicycle gearbox according to any one of the first to third embodiments is configured such that the motor unit is configured to move the movable member relative to the base member during the first shift operation without stopping the movable member. The motor unit is configured to move the movable member relative to the base member during the second shift operation without stopping the movable member.

[0010] By using a bicycle gearbox based on the fourth state, the first shift operation and the second shift operation can be made smooth.

[0011] According to a fifth embodiment of the present invention, a bicycle gearbox according to any one of the first to fourth embodiments is configured such that the controller is configured to control the power supply to the motor unit by a first electrical force while the motor unit moves the movable member relative to the base member during a first shift operation. The controller is configured to control the power supply to the motor unit by a second electrical force while the motor unit moves the movable member relative to the base member during a second shift operation. The first electrical force is different from the second electrical force.

[0012] Using a bicycle derailleur according to the fifth state, the first electric force and the second electric force can be different based on the specifications and / or structure of the bicycle derailleur.

[0013] According to a sixth state of the present invention, the bicycle gearbox of the fifth state is configured such that the first electric force is greater than the second electric force.

[0014] Using the bicycle gearbox according to the sixth state, the first electric force can be increased in the first shift operation and / or the second electric force can be decreased in the second shift operation.

[0015] According to a seventh state of the present invention, the bicycle gearbox of the fifth state is configured such that the first electric force is less than the second electric force.

[0016] Using the bicycle gearbox according to the seventh state, the first electric force can be reduced in the first shift operation and / or the second electric force can be increased in the second shift operation.

[0017] According to an eighth embodiment of the present invention, a bicycle derailleur based on any one of the first to seventh embodiments is configured such that a controller is configured to control the motor unit to move the movable member relative to the base member based on gear zone information related to a gear correspondence zone defined between the first gear position and the second gear position. The controller is configured to control the motor unit to adjust one position of the movable member based on overtravel information related to an overtravel zone. The overtravel zone includes at least a portion of a zone outside the gear correspondence zone.

[0018] Using a bicycle derailleur of the eighth state, the overtravel zone can be used to push the chain toward a sprocket. Therefore, the first shift operation and / or the second shift operation can be facilitated.

[0019] According to a ninth embodiment of the present invention, a bicycle derailleur based on any one of the first to eighth embodiments is configured such that the controller is configured to control the motor unit to move the movable member at a third maximum voltage in order to adjust the position of the movable member based on gear position information of an additional derailleur, which is a derailleur separate from the bicycle derailleur. The third maximum voltage is lower than the first maximum voltage.

[0020] Using the bicycle gearbox according to the ninth state, the third maximum voltage can be adjusted depending on the movement speed of one of the chain guides of the additional gearbox.

[0021] According to a tenth embodiment of the present invention, the bicycle derailleur of the eighth embodiment is configured such that the controller is configured to control the motor unit to move the movable member relative to the base member by a first adjustment distance along the first shift direction when the gear zone information satisfies a first adjustment condition. The controller is configured to, after moving the movable member by the first adjustment distance along the first shift direction, control the motor unit to move the movable member relative to the base member by a first return distance along the second shift direction. The first return distance is based on the overtravel information.

[0022] The first gear shift operation can be reliably facilitated by using a bicycle gearbox based on the tenth state.

[0023] According to an eleventh embodiment of the present invention, the bicycle derailleur of the eighth embodiment is configured such that the controller is configured to control the motor unit to move the movable member a second adjustment distance relative to the base member along the second shift direction when the gear zone information satisfies a second adjustment condition. The controller is configured to, after moving the movable member a second adjustment distance along the second shift direction, control the motor unit to move the movable member a second return distance relative to the base member along the first shift direction. The second return distance is based on the overtravel information.

[0024] The second shift operation can be reliably facilitated by using a bicycle gearbox based on the eleventh state.

[0025] According to a twelfth state of the present invention, the bicycle derailleur of any one of the first to eleventh states is configured such that the controller is configured to change at least one of the first maximum voltage and the second maximum voltage based on power information related to a power source configured to supply power to the bicycle derailleur.

[0026] By using a bicycle gearbox based on the twelfth state, the power consumption of the power source can be saved depending on the state of the power source.

[0027] According to a thirteenth embodiment of the present invention, the bicycle derailleur of the twelfth embodiment is configured such that the power information includes a remaining charge of the power supply. The controller is configured to reduce the higher of the first maximum voltage and the second maximum voltage when the remaining charge of the power supply is lower than a remaining charge threshold.

[0028] By using a bicycle gearbox according to the thirteenth state, if the remaining power of the power source is lower than the remaining power threshold, the power consumption of the power source can be saved.

[0029] According to a fourteenth embodiment of the present invention, the bicycle derailleur of the twelfth embodiment is configured such that the power information includes a remaining charge of the power supply. The controller is configured to reduce the lower of the first maximum voltage and the second maximum voltage when the remaining charge of the power supply is lower than the remaining charge threshold value.

[0030] By using the bicycle gearbox according to the fourteenth state, if the remaining power of the power source is lower than the remaining power limit, the power consumption of the power source can be saved.

[0031] According to a fifteenth embodiment of the present invention, the bicycle derailleur of any one of the twelve to fourteenth embodiments is configured such that the power information includes a remaining charge of the power source. The controller is configured to change at least one of the first maximum voltage and the second maximum voltage depending on the remaining charge of the power source, thereby changing the ratio of the higher of the first maximum voltage and the second maximum voltage to the lower of the first maximum voltage and the second maximum voltage.

[0032] By using the bicycle gearbox according to the fifteenth state, if the remaining power of the power source is lower than the remaining power limit, the power consumption of the power source can be saved.

[0033] According to a sixteenth embodiment of the present invention, a method for controlling a bicycle gearbox includes: controlling a motor unit to move a movable member relative to a base member along a first shift direction at a first maximum voltage; and controlling the motor unit to move the movable member relative to the base member along a second shift direction at a second maximum voltage different from the first maximum voltage, the second shift direction being the opposite direction to the first shift direction.

[0034] Using a bicycle gearbox according to the sixteenth state, the first maximum voltage and the second maximum voltage can be different based on the specifications and / or structure of the bicycle gearbox.

[0035] According to a seventeenth aspect of the present invention, a bicycle derailleur includes a base member, a movable member, a motor unit, and a controller. The movable member is configured to be movably coupled to the base member. The movable member is movable relative to the base member from a second gear position to a first gear position to move a chain along a first shift direction. The movable member is also movable relative to the base member from the second gear position to the first gear position to move the chain along a second shift direction, the second shift direction being the opposite of the first shift direction. The motor unit is configured to allow the movable member to move relative to the base member between the first gear position and the second gear position. The controller is configured to control the motor unit to move the movable member relative to the base member along the first shift direction at a first speed. The controller is also configured to control the motor unit to move the movable member relative to the base member along the second shift direction at a second speed different from the first speed.

[0036] Using the bicycle derailleur according to the seventeenth state, the first travel speed and the second travel speed can be different based on the specifications and / or structure of the bicycle derailleur.

[0037] According to an eighteenth embodiment of the present invention, the bicycle derailleur of the seventeenth embodiment is configured such that a gear ratio is defined as a quotient obtained by dividing the total number of teeth on a bicycle front sprocket by the total number of teeth on a bicycle rear sprocket. The gear ratio includes a first gear ratio and a second gear ratio smaller than the first gear ratio. In the first shift operation, the gear ratio changes from the second gear ratio to the first gear ratio. In the second shift operation, the gear ratio changes from the first gear ratio to the second gear ratio. The first travel speed is higher than the second travel speed.

[0038] By using the bicycle gearbox according to the eighteenth state, the speed of movement can be increased or decreased when the gear ratio increases or decreases during the shifting operation.

[0039] According to a nineteenth embodiment of the present invention, the bicycle derailleur of the seventeenth embodiment is configured such that a gear ratio is defined as a quotient obtained by dividing the total number of teeth on a bicycle front sprocket by the total number of teeth on a bicycle rear sprocket. The gear ratio includes a first gear ratio and a second gear ratio smaller than the first gear ratio. In the first shift operation, the gear ratio changes from the second gear ratio to the first gear ratio. In the second shift operation, the gear ratio changes from the first gear ratio to the second gear ratio. The first travel speed is lower than the second travel speed.

[0040] Using the bicycle gearbox according to the nineteenth state, the speed of movement can be increased or decreased when the gear ratio increases or decreases during the shifting operation.

[0041] According to a twentieth embodiment of the present invention, the bicycle transmission according to any one of the seventeenth to nineteenth embodiments is configured such that the first moving speed is a moving speed at which the motor unit moves the movable member relative to the base member along the first shift direction without stopping the movable member. The second moving speed is a moving speed at which the motor unit moves the movable member relative to the base member along the second shift direction without stopping the movable member.

[0042] By using the bicycle gearbox according to the twentieth state, the first shift operation and the second shift operation can be made smooth.

[0043] According to a twenty-first embodiment of the present invention, a bicycle gearbox according to any one of the seventeenth to twentieth embodiments is configured such that a controller is configured to control the motor unit to generate a first output power in a state in which the motor unit moves the movable member relative to the base member along the first shift direction at the first moving speed. The controller is also configured to control the motor unit to generate a second output power in a state in which the motor unit moves the movable member relative to the base member along the second shift direction at the second moving speed. The second output power is different from the first output power.

[0044] Using the bicycle gearbox according to the twenty-first state, the first output power and the second output power can be different based on the specifications and / or structure of the bicycle gearbox.

[0045] According to a twenty-second embodiment of the present invention, a bicycle gearbox according to any one of embodiments seventeen to twenty-one is configured such that the controller is configured to control the power supply to the motor unit by a first electrical force while the motor unit moves the movable member relative to the base member during a first shift operation. The controller is configured to control the power supply to the motor unit by a second electrical force while the motor unit moves the movable member relative to the base member during a second shift operation. The first electrical force is different from the second electrical force.

[0046] Using a bicycle derailleur according to the twenty-second state, the first electric force and the second electric force can be made different based on the specifications and / or structure of the bicycle derailleur.

[0047] According to one of the twenty-third states of the present invention, the bicycle gearbox according to the twenty-second state is configured such that the first electric force is greater than the second electric force.

[0048] Using the bicycle gearbox according to the twenty-third state, the first electric force can be increased in the first shift operation and / or the second electric force can be decreased in the second shift operation.

[0049] According to one of the twenty-fourth states of the present invention, the bicycle gearbox according to the twenty-second state is configured such that the first electric force is less than the second electric force.

[0050] Using the bicycle gearbox according to the twenty-fourth state, the first electric force can be reduced in the first shift operation and / or the second electric force can be increased in the second shift operation.

[0051] According to a twenty-fifth embodiment of the present invention, a bicycle derailleur according to any one of the seventeenth to twenty-fourth embodiments is configured such that the controller is configured to control the motor unit to move the movable member relative to the base member based on gear zone information related to a gear correspondence zone defined between the first gear position and the second gear position. The controller is configured to control the motor unit to adjust one position of the movable member based on overtravel information related to an overtravel zone. The overtravel zone includes at least a portion of a zone outside the gear correspondence zone.

[0052] Using the bicycle derailleur according to the twenty-fifth configuration, the overtravel zone can be used to push the chain against a sprocket. Therefore, the first shift operation and / or the second shift operation can be facilitated.

[0053] According to a twenty-sixth embodiment of the present invention, a bicycle derailleur according to any one of the seventeenth to twenty-fifth embodiments is configured such that the controller is configured to control the motor unit to move the movable member at a third moving speed in order to adjust the position of the movable member based on gear position information of an additional derailleur, which is a derailleur separate from the bicycle derailleur. The third moving speed is lower than the first moving speed.

[0054] Using the bicycle derailleur according to the twenty-sixth state, the third moving speed can be adjusted depending on the moving speed of one of the chain guides of the additional derailleur.

[0055] According to a twenty-seventh embodiment of the present invention, the bicycle derailleur of the twenty-fifth embodiment is configured such that the controller is configured to control the motor unit to move the movable member relative to the base member by a first adjustment distance at a first moving speed when the gear zone information satisfies a first adjustment condition. The controller is configured to, after moving the movable member by the first adjustment distance, control the motor unit to move the movable member relative to the base member by a first return distance at a second moving speed. The first return distance is based on the overtravel information.

[0056] The first gear shift operation can be reliably facilitated by using the bicycle gearbox according to the twenty-seventh state.

[0057] According to one of the twenty-eighth states of the present invention, the bicycle gearbox according to the twenty-seventh state is configured such that the first moving speed is higher than the second moving speed.

[0058] Using the bicycle gearbox according to the twenty-eighth state, the first moving speed can be increased in the first shift operation and / or the second moving speed can be decreased in the second shift operation.

[0059] According to one of the twenty-ninth states of the present invention, the bicycle gearbox according to the twenty-seventh state is configured such that the first moving speed is lower than the second moving speed.

[0060] Using the bicycle gearbox according to the twenty-ninth state, the first moving speed can be reduced in the first shift operation and / or the second moving speed can be increased in the second shift operation.

[0061] According to a thirtieth embodiment of the present invention, a bicycle derailleur according to any one of the twenty-fifth to twenty-ninth embodiments is configured such that the controller is configured to control the motor unit to move the movable member relative to the base member by a second adjustment distance at a second moving speed, provided that the gear zone information satisfies a second adjustment condition. The controller is configured to, after moving the movable member by the second adjustment distance, control the motor unit to move the movable member relative to the base member by a second return distance at a first moving speed. The second return distance is based on the overtravel information.

[0062] The second shift operation can be reliably facilitated by using a bicycle gearbox based on the thirtieth state.

[0063] According to one of the thirty-first states of the present invention, the bicycle gearbox according to the thirty-second state is configured such that the first moving speed is higher than the second moving speed.

[0064] Using the bicycle gearbox according to the thirty-first state, the first moving speed can be increased in the first shift operation and / or the second moving speed can be decreased in the second shift operation.

[0065] According to one of the thirty-second states of the present invention, the bicycle gearbox according to the thirty-tenth state is configured such that the first moving speed is lower than the second moving speed.

[0066] Using the bicycle gearbox according to the thirty-second state, the first moving speed can be reduced in the first shift operation and / or the second moving speed can be increased in the second shift operation.

[0067] According to one of the thirty-third embodiments of the present invention, a bicycle transmission according to any one of the seventeenth to thirty-second embodiments is configured such that a first directional operation time is defined as the time from when the motor unit begins to move the movable member along the first shift direction relative to the base member from the second gear position toward the first gear position to when the motor unit stops moving the movable member at the first gear position. A second directional operation time is defined as the time from when the motor unit begins to move the movable member along the second shift direction relative to the base member from the first gear position toward the second gear position to when the motor unit stops moving the movable member at the second gear position. The first directional operation time is different from the second directional operation time.

[0068] Using a bicycle derailleur according to the thirty-third state, the first direction operation time and the second direction operation time can be different based on the specifications and / or structure of the bicycle derailleur.

[0069] According to one of the thirty-fourth embodiments of the present invention, a method for controlling a bicycle gearbox includes: controlling a motor unit to move a movable member relative to a base member along a first shifting direction at a first moving speed; and controlling the motor unit to move the movable member relative to the base member along a second shifting direction at a second moving speed different from the first moving speed, the second shifting direction being the opposite direction to the first shifting direction.

[0070] Using a bicycle derailleur according to the thirty-fourth state, the first travel speed and the second travel speed can be different based on the specifications and / or structure of the bicycle derailleur. Simple Explanation of the Diagram

[0071] A more thorough understanding of the invention and one of its many accompanying advantages will be readily obtained, as the invention and its many accompanying advantages will be better understood by referring to the following detailed description when considered in conjunction with the accompanying drawings.

[0072] Figure 1 is a side view of a bicycle including a bicycle derailleur according to an embodiment.

[0073] Figure 2 is a side view of the bicycle derailleur shown in Figure 1.

[0074] Figure 3 is a front view of one of the bicycle derailleurs shown in Figure 2.

[0075] Figure 4 is a perspective view of one of the bicycle derailleurs shown in Figure 2.

[0076] Figure 5 is a perspective view of one of the motor units of the bicycle transmission shown in Figure 2.

[0077] Figure 6 is an exploded perspective view of one of the motor units of the bicycle derailleur shown in Figure 2.

[0078] Figure 7 is a schematic block diagram of one of the bicycles shown in Figure 1.

[0079] Figure 8 is a side view of one of the additional derailleurs of the bicycle shown in Figure 1.

[0080] Figure 9 is a timing diagram showing one of the shift operations of an additional transmission as illustrated in Figure 8.

[0081] Figure 10 is a timing diagram showing one of the shifting operations of a bicycle gearbox as illustrated in Figure 2.

[0082] Figure 11 is a timing diagram (modified) showing one of the shifting operations of a bicycle gearbox as illustrated in Figure 2.

[0083] Figure 12 is a schematic diagram of one of the drive wheel systems of the bicycle shown in Figure 1.

[0084] Figure 13 is a timing diagram showing one of the adjustment operations of a bicycle derailleur as illustrated in Figure 2.

[0085] Figure 14 is a timing diagram showing one of the adjustment operations of the bicycle derailleur as illustrated in Figure 2.

[0086] Figure 15 is a timing diagram showing one of the gear shifting operations of the bicycle shown in Figure 2.

[0087] Figure 16 is a timing diagram showing one of the overtravel operations of a bicycle derailleur as illustrated in Figure 2. Implementation

[0088] Several embodiments will now be described with reference to the accompanying drawings, wherein similar element symbols designate corresponding or identical elements throughout the drawings.

[0089] As shown in Figure 1, according to one embodiment, a bicycle 2 includes a bicycle derailleur 10. In this embodiment, the bicycle 2 includes a road bicycle. However, the bicycle 2 may include a mountain bike, a city bike, a tricycle, a freight bicycle, a recumbent bicycle, or any type of bicycle. In this embodiment, the bicycle derailleur 10 includes a front derailleur. However, the structure of the bicycle derailleur 10 may be adapted to other derailleurs, such as a rear derailleur.

[0090] The bicycle 2 further includes a bicycle frame 2A, a saddle 2B, a handlebar 2C, a control device 3, a control device 4, a drive train DT, and a power supply PS. Control devices 3 and 4 are configured to be mounted to the handlebar 2C. The drive train DT includes a crank CR, a front sprocket assembly FS, a rear sprocket assembly RS, a chain C, a bicycle derailleur 10, and a bicycle derailleur RD. The bicycle derailleur RD may also be referred to as an additional derailleur RD.

[0091] The front sprocket assembly FS is fixed to the crank CR and includes a bicycle front sprocket FS1 and a bicycle front sprocket FS2. The bicycle front sprocket FS1 has an outer diameter that is larger than that of the bicycle front sprocket FS2. Therefore, the bicycle front sprocket FS1 can also be referred to as the larger sprocket FS1. The bicycle front sprocket FS2 can also be referred to as the smaller sprocket FS2.

[0092] The rear sprocket assembly RS is rotatably mounted to the bicycle frame 2A and a plurality of rear sprockets RS1 to RS7. The chain C engages with the front sprocket assembly FS and the rear sprocket assembly RS. The bicycle derailleur RD is mounted to the bicycle frame 2A and configured to shift the chain C relative to the plurality of sprockets of the rear sprocket assembly RS to change a gear position. The bicycle derailleur 10 is configured to shift the chain C relative to the front sprockets FS1 and FS2 of the front sprocket assembly FS. The power supply PS is configured to be mounted to the bicycle frame 2A. In this embodiment, the power supply PS is configured to be mounted on one of the downtubes of the bicycle frame 2A. However, the power supply PS can be configured to be mounted to other components of the bicycle frame 2A, such as a seat tube. The power supply PS can also be configured to be directly mounted to other devices, such as the bicycle derailleur 10 or RD.

[0093] The bicycle derailleur RD is configured to be operated using operating device 3. The bicycle derailleur 10 is configured to be operated using operating device 4. In this embodiment, the bicycle derailleur RD is configured to be electrically connected to operating devices 3 and 4 via a wireless communication channel. The bicycle derailleur RD is electrically connected to the power supply PS via cable EC1 of an electrical wiring structure EC. The bicycle derailleur 10 is electrically connected to the power supply PS via cable EC2 of the electrical wiring structure EC. The power supply PS is configured to supply power to the bicycle derailleur 10 and RD via cables EC1 and EC2. For example, the bicycle derailleur 10 and RD and the power supply PS are configured to communicate with each other using a power line communication (PLC). However, the bicycle derailleur 10 and RD and the power supply PS can be configured to communicate with each other using other communication methods such as wireless communication. At least one of operating devices 3 and 4 can be configured to communicate with at least one of the bicycle derailleur 10 and RD and the power supply PS via a wired communication channel.

[0094] In this embodiment, the bicycle derailleur RD is configured to communicate wirelessly with operating devices 3 and 4. The bicycle derailleur RD is configured to receive control signals wirelessly transmitted from operating devices 3 and 4. The bicycle derailleur 10 is configured to communicate with the bicycle derailleur RD via a power supply PS and electrical wiring structure EC. The bicycle derailleur RD is configured to transmit the control signals wirelessly received from operating device 4 to the bicycle derailleur 10 via the power supply PS and electrical wiring structure EC.

[0095] However, the configuration of bicycle 2 is not limited to the above configuration. For example, bicycle derailleur 10 and RD can each be configured to be electrically connected to power supply PS via electrical wiring structure EC and an additional device such as junction box 6. If bicycle derailleur 10 includes a plurality of connection ports, bicycle derailleur RD and power supply PS can each be configured to be electrically connected to bicycle derailleur 10 via cables EC1 and EC2. If bicycle derailleur RD includes a plurality of connection ports, bicycle derailleur 10 and power supply PS can each be configured to be electrically connected to bicycle derailleur RD via cables EC1 and EC2. If power supply PS is directly installed to one of bicycle derailleur 10 and RD, bicycle derailleur 10 can be configured to be electrically connected to bicycle derailleur RD via cable EC1 or EC2. In addition, bicycle derailleur RD can be connected to at least one of operating devices 3 and 4 via a cable without wireless communication. Furthermore, bicycle derailleur 10 can be configured to be electrically connected to at least one of operating devices 3 and 4 via a wireless communication channel.

[0096] In this application, the following directional terms "forward," "backward," "forward," "rearward," "left," "right," "lateral," "upward," and "downward," as well as any other similar directional terms, refer to the direction determined based on a user (e.g., a rider) in the bicycle 2 in a standard user position (e.g., on the saddle 2B or a seat) and facing the handlebars 2C. Accordingly, such terms used to describe the bicycle derailleur 10 or other components should be interpreted relative to a bicycle 2 equipped with a bicycle derailleur 10 used in an upright riding position as if on a horizontal surface.

[0097] As shown in Figure 2, the bicycle derailleur 10 includes a base member 12. The base member 12 is configured to be mounted to the bicycle frame 2A. The bicycle derailleur 10 is configured to be coupled to the bicycle frame 2A using at least one of a mounting fastener 7 and a clamp 8. The bicycle derailleur 10 is coupled to the clamp 8 using the mounting fastener 7. However, if needed and / or desired, another mounting structure may be adapted to the bicycle derailleur 10.

[0098] The bicycle derailleur includes a movable member 14. The movable member 14 is configured to be movably coupled to a base member 12. The movable member 14 includes a chain guide 18. In the case where the bicycle derailleur is one of the rear derailleurs, the movable member 14 includes a movable body and a chain guide pivotally coupled to the movable body.

[0099] As shown in Figure 3, the chain guide 18 includes a first guide member 18A and a second guide member 18B. The first guide member 18A is configured to guide the chain C along a first shifting direction D11. The second guide member 18B is configured to guide the chain C along a second shifting direction D12. The second guide member 18B is spaced apart from the first guide member 18A along the first shifting direction D11. The second guide member 18B is coupled to the first guide member 18A.

[0100] The bicycle derailleur 10 includes a linkage structure 20. The linkage structure 20 is configured to movably couple a chain guide 18 to a base member 12. The linkage structure 20 includes a first linkage member 22 and a second linkage member 24. The first linkage member 22 is pivotally coupled to the base member 12 about a first pivot axis PA1. The second linkage member 24 is pivotally coupled to the base member 12 about a second pivot axis PA2. The first linkage member 22 is pivotally coupled to the chain guide 18 about a third pivot axis PA3. The second linkage member 24 is pivotally coupled to the chain guide 18 about a fourth pivot axis PA4.

[0101] Linkage structure 20 includes a first link pin 26, a second link pin 28, a third link pin 30, and a fourth link pin 32. The first link pin 26 is configured to pivotally couple the first link member 22 to the base member 12 about a first pivot axis PA1. The second link pin 28 is configured to pivotally couple the second link member 24 to the base member 12 about a second pivot axis PA2. The third link pin 30 is configured to pivotally couple the first link member 22 to the chain guide 18 about a third pivot axis PA3. The fourth link pin 32 is configured to pivotally couple the second link member 24 to the chain guide 18 about a fourth pivot axis PA4.

[0102] The movable member 14 is movable relative to the base member 12 from a second gear position P2 to a first gear position P1 to move the chain C along a first shift direction D11. The movable member 14 is also movable relative to the base member 12 from the second gear position P2 to the first gear position P1 to move the chain C along a second shift direction D12. The second shift direction D12 is the opposite direction to one of the first shift directions D11. The first gear position P1 corresponds to a position of the larger sprocket FS1 of the front sprocket assembly FS (see, for example, Figure 1). The second gear position P2 corresponds to a position of the smaller sprocket FS2 of the front sprocket assembly FS (see, for example, Figure 1). The chain guide 18 is configured to guide the chain C from the smaller sprocket FS2 to the larger sprocket FS1 along the first shift direction D11. The chain guide 18 is configured to guide the chain C from the larger sprocket FS1 to the smaller sprocket FS2 along the second shift direction D12.

[0103] As shown in Figure 1, a gear ratio is defined as a quotient obtained by dividing the total number of teeth on one of the bicycle's front sprockets FS1 or FS2 by the total number of teeth on one of the bicycle's rear sprockets RS1, RS2, RS3, RS4, RS5, RS6, or RS7. The gear ratio includes a first gear ratio GR1 and a second gear ratio GR2 that is smaller than the first gear ratio GR1. As shown in Figure 3, the first gear position P1 of the movable member 14 corresponds to the first gear ratio GR1. The second gear position P2 of the movable member 14 corresponds to the second gear ratio GR2. In the first shift operation, the gear ratio changes from the second gear ratio GR2 to the first gear ratio GR1. In the second shift operation, the gear ratio changes from the first gear ratio GR1 to the second gear ratio GR2.

[0104] As shown in Figure 4, the bicycle derailleur 10 includes a biasing member 33. The biasing member 33 is configured to bias the chain guide 18 from one of the second gear position P2 (see, for example, Figure 3) and the first gear position P1 (see, for example, Figure 5) toward the other of the second gear position P2 and the first gear position P1. In this embodiment, the biasing member 33 is configured to bias the chain guide 18 from the second gear position P2 (see, for example, Figure 3) toward the first gear position P1 (see, for example, Figure 3). However, as needed and / or desired, the biasing member 33 may be configured to bias the chain guide 18 from the first gear position P1 (see, for example, Figure 3) toward the second gear position P2 (see, for example, Figure 3).

[0105] As shown in Figure 3, the bicycle derailleur 10 includes a motor unit 34. The motor unit 34 is configured to allow the movable member 14 to move relative to the base member 12 between a first gear position P1 and a second gear position P2. The motor unit 34 is also configured to allow the chain guide 18 to move relative to the base member 12 from the second gear position P2 to the first gear position P1 along a first shift direction D11. Finally, the motor unit 34 is configured to allow the chain guide 18 to move relative to the base member 12 from the first gear position P1 to the second gear position P2 along a second shift direction D12.

[0106] Motor unit 34 is configured to apply rotational force to at least one of chain guide 18 and link structure 20 to move chain guide 18 relative to base member 12. In this embodiment, motor unit 34 is configured to apply rotational force to link structure 20 via first link pin 26 to move chain guide 18 relative to base member 12. Motor unit 34 is configured to apply rotational force to chain guide 18 via first link pin 26 and link structure 20 to move chain guide 18 relative to base member 12. However, as needed and / or desired, motor unit 34 may be configured to apply rotational force to chain guide 18 or both chain guide 18 and link structure 20.

[0107] As shown in Figure 5, the motor unit 34 includes a motor 35 and a gear structure 36. The motor 35 is configured to generate rotational force. Examples of motors 35 include DC motors and stepper motors. However, motor 35 may include other types of motors.

[0108] Gear structure 36 is configured to transmit rotational force. Gear structure 36 includes a plurality of gears 38. The plurality of gears 38 are configured to transmit rotational force to at least one of chain guide 18 and linkage structure 20. In this embodiment, the plurality of gears 38 are configured to transmit rotational force to linkage structure 20. The plurality of gears 38 are configured to transmit rotational force to linkage structure 20 through first link pin 26. However, the plurality of gears 38 may be configured to transmit rotational force directly to chain guide 18 or both chain guide 18 and linkage structure 20.

[0109] Motor unit 34 includes an output shaft 34A. Motor unit 34 is configured to rotate the output shaft 34A. Output shaft 34A is coupled to a first connecting pin 26 to rotate together with the first connecting pin 26. A plurality of gears 38 includes an output gear G10 fixed to one of the output shaft 34A.

[0110] As shown in Figure 6, the motor unit 34 includes a housing 40. The motor 35 and gear structure 36 are disposed within the housing 40. The housing 40 includes a first housing 42, a second housing 44, and a third housing 45. The first housing 42 includes a receiving space 42A. The motor 35 and gear structure 36 are disposed within the receiving space 42A. The second housing 44 is attached to the first housing 42 to cover one end opening of the receiving space 42A. The third housing 45 is attached to the first housing 42 to hold the second housing 44 between the first housing 42 and the third housing 45. The first housing 42 includes a first housing support member 42B. The second housing 44 includes a second housing support member 44B. The first connecting rod pin 26 is pivotally supported by the first housing support member 42B and the second housing support member 44B.

[0111] As shown in Figure 7, the bicycle derailleur 10 includes a controller 50. The controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 in response to a control signal transmitted from the self-operating device 4. The controller 50 is electrically connected to the motor unit 34. The controller 50 and the motor unit 34 are configured to be powered by a power supply PS provided separately from the bicycle derailleur 10. The controller 50 is configured to communicate with the bicycle derailleur RD and the power supply PS via an electrical wiring structure EC using a PLC. However, the controller 50 can also be configured to communicate wirelessly with the bicycle derailleur RD and the power supply PS.

[0112] If the power supply is directly installed to the bicycle derailleurs RD and 10, the bicycle derailleurs RD and 10 can be configured to communicate wirelessly with the operating devices 3 and 4. In addition, the power supply PS can be configured to be shared between at least one of the bicycle derailleurs 10 and RD and other devices (such as an auxiliary drive unit configured to apply auxiliary force to the drive wheel train DT (see, for example, Figure 1)).

[0113] The bicycle derailleur 10 includes an electrical wiring structure EC that is detachably connected to one of the ports 51. Port 51 is electrically connected to the controller 50.

[0114] Operating device 3 is configured to generate a first control signal CS11 in response to a first user input U11. Operating device 3 is configured to generate a second control signal CS12 in response to a second user input U12. Operating device 3 is configured to wirelessly transmit the first control signal CS11 in response to the first user input U11. Operating device 3 is configured to wirelessly transmit the second control signal CS12 in response to the second user input U12. For example, operating device 3 includes a user interface (e.g., an electric switch) and a communicator. Since operating device 3 includes structures known in the field of bicycles, they will not be described in detail here for the sake of brevity.

[0115] As shown in Figure 8, the controller 50 is configured to control the motor unit 34 in response to the first control signal CS11, causing the chain guide 18 to move relative to the base member 12 from the second gear position P2 to the first gear position P1. The controller 50 is also configured to control the motor unit 34 in response to the second control signal CS12, causing the chain guide 18 to move relative to the base member 12 from the first gear position P1 to the second gear position P2.

[0116] As shown in Figure 7, in this embodiment, the bicycle derailleur RD is configured to wirelessly communicate with the operating devices 3 and 4. The bicycle derailleur RD is configured to wirelessly receive both the first control signal CS11 and the second control signal CS12 from the operating device 3. The bicycle derailleur RD is configured to transmit both the first control signal CS11 and the second control signal CS12 to the bicycle derailleur 10 through the electrical wiring structure EC. However, the bicycle derailleur 10 can also be configured to wirelessly receive both the first control signal CS11 and the second control signal CS12 from the operating device 3.

[0117] The controller 50 includes a processor 50P, a memory 50M, a circuit board 50C, and a system bus 50D. The processor 50P and the memory 50M are electrically mounted on the circuit board 50C. The processor 50P includes a central processing unit (CPU) and a memory controller. The memory 50M is electrically connected to the processor 50P. The memory 50M includes a read-only memory (ROM) and a random access memory (RAM). The memory 50M includes storage areas, each addressed in the ROM and RAM. The processor 50P is configured to control the memory 50M to store data in and read data from the storage areas of the memory 50M. The memory 50M (e.g., ROM) stores a program. The program is read into the processor 50P, and the configuration and / or algorithms of the controller 50 are executed therefrom.

[0118] The controller 50 includes a motor driver 52 and a communicator 54. The motor driver 52 and communicator 54 are electrically mounted on a circuit board 50C. The motor 35, motor driver 52, and communicator 54 are electrically connected to each other via the circuit board 50C and system bus 50D. The motor driver 52 is configured to control the motor 35 in response to at least one of a first control signal CS11 and a second control signal CS12 transmitted from the self-operating device 3. The communicator 54 is configured to receive the first control signal CS11 and the second control signal CS12 from the self-operating device 3. The communicator 54 is configured to transmit information to other devices and / or receive information from other devices using a PLC. The communicator 54 is configured to receive power from a power supply PS.

[0119] The communicator 54 is configured to separate the input signal into a power supply voltage and a control signal. The communicator 54 is configured to adjust the power supply voltage to a level at which the controller 50 can operate appropriately. The communicator 54 is configured to change the power supply voltage to a level at which the motor unit 34 moves the movable member 14. The communicator 54 is configured to change the power supply voltage to different levels at which the motor unit 34 moves the movable member 14. The communicator 54 is further configured to superimpose output signals such as the first control signal CS11 and the second control signal CS12 onto the power supply voltage applied from the power supply PS to the electrical wiring structure EC. In this embodiment, the communicator 54 includes a wired communicator. However, instead of a wired communicator or in addition to a wired communicator, the communicator 54 may also include a wireless communicator.

[0120] The bicycle derailleur 10 further includes a rotation sensor 56. The rotation sensor 56 is configured to sense the rotational position of one of the plurality of gears 38 in the gear structure 36. The rotation sensor 56 is electrically mounted on a circuit board 50C. The rotation sensor 56 is electrically connected to the motor driver 52 and the communicator 54 via the circuit board 50C and the system bus 50D.

[0121] As shown in Figure 6, a plurality of gears 38 include a sensor gear G8. A rotation sensor 56 is configured to sense the rotational position of one of the sensor gears G8. In this embodiment, the rotation sensor 56 includes an optical encoder. The rotation sensor 56 is configured to emit light to a sensor object and to detect light reflected by the sensor object. However, instead of an optical encoder, or in addition to an optical encoder, the rotation sensor 56 may also include another sensor. The rotation sensor 56 may be omitted from the bicycle derailleur 10. The rotation sensor 56 may be configured to sense the rotational position of another component disposed in the motor unit 34.

[0122] As shown in Figure 8, the additional gearbox RD includes a base member RD1, a movable member RD2, a linkage structure RD3, a motor unit RD4, and a controller RD5. The base member RD1 is configured to be mounted to the bicycle frame 2A. The movable member RD2 is movably coupled to the base member RD1. The movable member RD2 includes a movable body RD21 and a chain guide RD22. The chain guide RD22 is pivotally coupled to the movable body RD21. The linkage structure RD3 movably couples the movable member RD2 to the base member RD1. The motor unit RD4 is configured to move the movable member RD2 relative to the base member RD1. The controller RD5 is configured to control the motor unit RD4 to move the movable member RD2 relative to the base member RD1 in response to a control signal transmitted from the self-operating device 4. The controller RD5 includes a wireless communication device configured to communicate wirelessly with the operating devices 3 and 4. The controller RD5 includes a position sensor configured to sense the current gear position of the movable member 14 relative to one of the base members 12. The controller RD5 is configured to transmit the current gear position to the controller 50 of the bicycle derailleur 10. The controller RD5, which includes a wireless communication device, is located inside the motor unit RD4. However, the controller RD5 may be located in other locations outside the motor unit RD4.

[0123] Operating device 4 is configured to generate a first control signal CS21 in response to a first user input U21. Operating device 4 is configured to generate a second control signal CS22 in response to a second user input U22. Operating device 4 is configured to wirelessly transmit the first control signal CS21 in response to the first user input U21. Operating device 4 is configured to wirelessly transmit the second control signal CS22 in response to the second user input U22. For example, operating device 4 includes a user interface (e.g., an electric switch) and a communicator. Since operating device 4 includes structures known in the field of bicycles, they will not be described in detail here for the sake of brevity.

[0124] As shown in Figure 9, the motor unit RD4 is configured to allow the movable member RD2 to move relative to the base member RD1 between two adjacent gear positions P31 to P37 along a first shift direction D11 and a second shift direction D12. The second shift direction D12 is the opposite direction to one of the first shift directions D11. The motor unit RD4 is configured to maintain the movable member RD2 relative to the base member RD1 in each of the plurality of gear positions P31 to P37. The plurality of gear positions P31 to P37 correspond to a plurality of bicycle rear sprockets RS1 to RS7 (see, for example, Figure 9).

[0125] As shown in Figure 10, the controller 50 is configured to control the motor unit 34 to rotate the output shaft 34A (see, for example, Figure 5) of the motor unit 34 at a first maximum voltage MV1 during a first shift operation of the chain along one of the first shift directions D11. The controller 50 is also configured to control the motor unit 34 to rotate the output shaft 34A (see, for example, Figure 5) of the motor unit 34 at a second maximum voltage MV2 during a second shift operation of the chain along one of the second shift directions D12. The first maximum voltage MV1 is different from the second maximum voltage MV2. In this embodiment, the first maximum voltage MV1 is higher than the second maximum voltage MV2. However, as shown in Figure 11, the first maximum voltage MV1 may be lower than the second maximum voltage MV2, depending on need and / or expectation.

[0126] As shown in Figure 10, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 along the first shifting direction D11 at a first moving speed SP1. The controller 50 is also configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 along the second shifting direction D12 at a second moving speed SP2. The second moving speed SP2 is different from the first moving speed SP1. In this embodiment, the first moving speed SP1 is higher than the second moving speed SP2. However, as shown in Figure 11, the first moving speed SP1 may be lower than the second moving speed SP2.

[0127] As shown in Figure 10, the motor unit 34 moves the movable member 14 relative to the base member 12 during the first shifting operation without stopping the movable member 14. The first moving speed SP1 is a moving speed at which the motor unit 34 moves the movable member 14 relative to the base member 12 along the first shifting direction D11 without stopping the movable member 14.

[0128] In the second shift operation, the motor unit 34 moves the movable member 14 relative to the base member 12 without stopping the movable member 14. The second moving speed SP2 is a moving speed at which the motor unit 34 moves the movable member 14 relative to the base member 12 along the second shift direction D12 without stopping the movable member 14.

[0129] The first moving speed SP1 and the second moving speed SP2 can be calculated based on the total travel time and the total travel distance of the movable member 14. For example, the total travel time is defined as the time from the start of movement of the movable member 14 to the final stop of the movable member 14. The travel distance is defined as the distance from the starting position of the movable member 14 to the stopping position of the movable member 14. The first moving speed SP1 and the second moving speed SP2 can be the moving speed of the movable member 14 when there is no load (e.g., when there is no guiding chain C).

[0130] The first moving speed SP1 and the second moving speed SP2 can be the average output speed of one of the motor units 34. The output speed of the motor unit 34 is the rotational speed of one of the sensor gears G8 of the motor unit 34. The first moving speed SP1 and the second moving speed SP2 can be calculated based on the rotation time and a rotation angle of one of the sensor gears G8 of the motor unit 34. For example, the rotation time is defined as the time from the start of rotation of the sensor gear G8 of the motor unit 34 to the final stop of the sensor gear G8 of the motor unit 34. The rotation angle is defined as the total angle from the start angle of one of the sensor gears G8 of the motor unit 34 to the stop angle of one of the sensor gears G8 of the motor unit 34.

[0131] As shown in Figure 10, a first directional operation time T1 is defined as the time from when the motor unit 34 starts moving the movable member 14 along the first shifting direction D11 relative to the base member 12 from the second gear position P2 towards the first gear position P1 to when the motor unit 34 stops moving the movable member 14 at the first gear position P1. A second directional operation time T2 is defined as the time from when the motor unit 34 starts moving the movable member 14 along the second shifting direction D12 relative to the base member 12 from the first gear position P1 towards the second gear position P2 to when the motor unit 34 stops moving the movable member 14 at the second gear position P2. The first directional operation time T1 is different from the second directional operation time T2. In this embodiment, the first directional operation time T1 is shorter than the second directional operation time T2. However, as shown in Figure 11, the first directional operation time T1 can be longer than the second directional operation time T2.

[0132] As shown in Figure 10, the controller 50 is configured to control the power supply to the motor unit 34 by a first electrical force EP1 in a state where the movable member 14 moves relative to the base member 12 during a first shifting operation. The controller 50 is also configured to control the power supply to the motor unit 34 by a second electrical force EP2 in a state where the movable member 14 moves relative to the base member 12 during a second shifting operation. The first electrical force EP1 is different from the second electrical force EP2. In this embodiment, the first electrical force EP1 is greater than the second electrical force EP2. However, as shown in Figure 11, the first electrical force EP1 may be less than the second electrical force EP2.

[0133] As shown in Figure 10, the controller 50 is configured to control the motor unit 34 to generate a first output power PW1 in a state where the motor unit 34 moves the movable member 14 relative to the base member 12 along a first shifting direction D11 at a first moving speed SP1. The controller 50 is also configured to control the motor unit 34 to generate a second output power PW2 in a state where the motor unit 34 moves the movable member 14 relative to the base member 12 along a second shifting direction D12 at a second moving speed SP2. The second output power PW2 is different from the first output power PW1. In this embodiment, the first output power PW1 is greater than the second output power PW2. Each of the first output power PW1 and the second output power PW2 includes the output torque of either the motor 35 or the motor unit 34. However, as shown in Figure 11, the first output power PW1 may be less than the second output power PW2.

[0134] As shown in Figures 10 and 11, the method of controlling the bicycle gearbox 10 includes controlling the motor unit 34 to move the movable member 14 relative to the base member 12 along a first shift direction D11 at a first maximum voltage MV1. The method of controlling the bicycle gearbox 10 also includes controlling the motor unit 34 to move the movable member 14 relative to the base member 12 along the first shift direction D11 at a first moving speed SP1. Furthermore, the method of controlling the bicycle gearbox 10 includes controlling the motor unit 34 to move the movable member 14 relative to the base member 12 along the first shift direction D11 at a first electric force EP1. Finally, the method of controlling the bicycle gearbox 10 includes controlling the motor unit 34 to move the movable member 14 relative to the base member 12 along the first shift direction D11 at a first output power PW1.

[0135] A method for controlling a bicycle derailleur 10 includes controlling a motor unit 34 to move a movable member 14 relative to a base member 12 along a second shift direction D12 at a second maximum voltage MV2 different from a first maximum voltage MV1. Another method for controlling a bicycle derailleur 10 includes controlling a motor unit 34 to move the movable member 14 relative to a base member 12 along the second shift direction D12 at a second speed SP2 different from a first speed SP1. A third method for controlling a bicycle derailleur 10 includes controlling a motor unit 34 to move the movable member 14 relative to a base member 12 along the second shift direction D12 according to a second electric force EP2. Finally, a fourth method for controlling a bicycle derailleur 10 includes controlling a motor unit 34 to move the movable member 14 relative to a base member 12 along the second shift direction D12 according to a second output power PW2.

[0136] As shown in Figure 12, to reduce interference between the movable member 14 and the chain C, the controller 50 is configured to control the motor unit 34 to move the movable member 14 so as to adjust one of the positions of the movable member 14 based on the gear position information INF1 of the additional derailleur RD. In this embodiment, the gear position information INF1 of the additional derailleur RD includes the current gear position of one of the additional derailleur RD among a plurality of gear positions P31 to P37. The additional derailleur RD is configured to transmit the gear position information INF1 to the bicycle derailleur 10 during the shifting operation of the additional derailleur RD.

[0137] The first gear position P1 includes a first initial gear position P11 and a first adjusting gear position P12. The first initial gear position P11 and the first adjusting gear position P12 are different from each other. The first adjusting gear position P12 is set between the first initial gear position P11 and the second gear position P2. The controller 50 is configured to control the motor unit 34 so that the movable member 14 is maintained in either the first initial gear position P11 or the first adjusting gear position P12.

[0138] If controller 50 infers that the gear position of the additional transmission RD has changed from gear position P36 to gear position P37 based on gear position information INF1, then controller 50 is configured to control motor unit 34 to move movable member 14 from the first initial gear position P11 to the first adjusted gear position P12. If controller 50 infers that the gear position of the additional transmission RD has changed from gear position P37 to gear position P36 based on gear position information INF1, then controller 50 is configured to control motor unit 34 to move movable member 14 from the first adjusted gear position P12 to the first initial gear position P11. If controller 50 infers that the gear position of the additional transmission RD has changed between gear positions P31 and P36 based on gear position information INF1, then controller 50 is configured to control motor unit 34 to maintain movable member 14 in the first initial gear position P11.

[0139] The second gear position P2 includes a second initial gear position P21 and a second adjusting gear position P22. The second initial gear position P21 and the second adjusting gear position P22 are different from each other. The second adjusting gear position P22 is positioned between the second initial gear position P21 and the first gear position P1. The controller 50 is configured to control the motor unit 34 so that the movable member 14 is maintained in either the second initial gear position P21 or the second adjusting gear position P22.

[0140] If controller 50 infers that the gear position of the additional transmission RD has changed from gear position P32 to gear position P31 based on gear position information INF1, then controller 50 is configured to control motor unit 34 to move movable member 14 from the second initial gear position P21 to the second adjusting gear position P22. If controller 50 infers that the gear position of the additional transmission RD has changed from gear position P31 to gear position P32 based on gear position information INF1, then controller 50 is configured to control motor unit 34 to move movable member 14 from the second adjusting gear position P22 to the second initial gear position P21. If controller 50 infers that the gear position of the additional transmission RD has changed between gear positions P32 and P37 based on gear position information INF1, then controller 50 is configured to control motor unit 34 to maintain movable member 14 in the second initial gear position P21.

[0141] As seen in Figures 13 and 14, the controller 50 is configured to control the motor unit 34 to move the movable member 14 under a third maximum voltage MV31 or MV32, so as to adjust the position of the movable member 14 based on the gear position information INF1 of the additional gearbox RD, which is a gearbox separate from the bicycle gearbox 10. The third maximum voltage MV31 or MV32 is different from the first maximum voltage MV1 and the second maximum voltage MV2. In this embodiment, the third maximum voltage MV31 or MV32 is lower than the first maximum voltage MV1. The third maximum voltage MV31 or MV32 is lower than the second maximum voltage MV2. The third maximum voltage MV31 is equal to the third maximum voltage MV32. However, the third maximum voltage MV31 or MV32 may be equal to or higher than at least one of the first maximum voltage MV1 and the second maximum voltage MV2. The third maximum voltage MV31 may be different from the third maximum voltage MV32.

[0142] The controller 50 is configured to control the motor unit 34 to move the movable member 14 at a third moving speed SP31 or SP32 to adjust the position of the movable member 14 based on the gear position information INF1 of the additional gearbox RD, which is a gearbox separate from the bicycle gearbox 10. The third moving speed SP31 or SP32 is different from the first moving speed SP1 and the second moving speed SP2. In this embodiment, the third moving speed SP31 or SP32 is lower than the first moving speed SP1. The third moving speed SP31 or SP32 is lower than the second moving speed SP2. The third moving speed SP31 is equal to the third moving speed SP32. However, the third moving speed SP31 or SP32 may be equal to or higher than at least one of the first moving speed SP1 and the second moving speed SP2. The third moving speed SP31 may be different from the third moving speed SP32.

[0143] The controller 50 is configured to control the motor unit 34 to move the movable member 14 according to a third electric force EP31 or EP32, so as to adjust the position of the movable member 14 based on the gear position information INF1 of the additional transmission RD. The third electric force EP31 or EP32 is different from the first electric force EP1 and the second electric force EP2. In this embodiment, the third electric force EP31 or EP32 is less than the first electric force EP1. The third electric force EP31 or EP32 is less than the second electric force EP2. The third electric force EP31 is equal to the third electric force EP32. However, the third electric force EP31 or EP32 may be equal to or greater than at least one of the first electric force EP1 and the second electric force EP2. The third electric force EP31 may be different from the third electric force EP32.

[0144] The controller 50 is configured to control the motor unit 34 to move the movable member 14 according to a third output power PW31 or PW32, so as to adjust the position of the movable member 14 based on the gear position information INF1 of the additional transmission RD. The third output power PW31 or PW32 is different from the first output power PW1 and the second output power PW2. In this embodiment, the third output power PW31 or PW32 is less than the first output power PW1. The third output power PW31 or PW32 is less than the second output power PW2. The third output power PW31 is equal to the third output power PW32. However, the third output power PW31 or PW32 may be equal to or greater than at least one of the first output power PW1 and the second output power PW2. The third output power PW31 may be different from the third output power PW32.

[0145] As shown in Figure 15, the controller 50 is configured to change at least one of the first maximum voltage MV1 and the second maximum voltage MV2 based on power information INF2 related to the power supply PS configured to supply power to the bicycle derailleur 10. For example, the power information INF2 includes the remaining charge of one of the power supplies PS.

[0146] In this embodiment, if the remaining power of the power supply PS is lower than a remaining power threshold LV, the controller 50 is configured to reduce the higher of the first maximum voltage MV1 and the second maximum voltage MV2. If the remaining power of the power supply PS is lower than the remaining power threshold LV, the controller 50 is configured to reduce the lower of the first maximum voltage MV1 and the second maximum voltage MV2. If the remaining power of the power supply PS is lower than the remaining power threshold LV, the controller 50 is configured to reduce the first maximum voltage MV1. If the remaining power of the power supply PS is lower than the remaining power threshold LV, the controller 50 is configured to reduce the second maximum voltage MV2.

[0147] For example, the controller 50 is configured to change at least one of the first maximum voltage MV1 and the second maximum voltage MV2 depending on the remaining power of the power supply PS, thereby changing the ratio RV of the higher of the first maximum voltage MV1 and the second maximum voltage MV2 to the lower of the first maximum voltage MV1 and the second maximum voltage MV2.

[0148] In this embodiment, the controller 50 is configured to change at least one of the first maximum voltage MV1 and the second maximum voltage MV2 depending on the remaining power of the power supply PS, thereby changing the ratio RV of the first maximum voltage MV1 to the second maximum voltage MV2. The controller 50 is configured to change the first maximum voltage MV1 and the second maximum voltage MV2 depending on the remaining power of the power supply PS, thereby changing the ratio RV of the first maximum voltage MV1 to the second maximum voltage MV2. If the remaining power of the power supply RS is lower than the remaining power threshold LV, the controller 50 is configured to decrease the first maximum voltage MV1 and the second maximum voltage MV2 to change the ratio RV of the first maximum voltage MV1 to the second maximum voltage MV2 from an initial ratio RV1 to a predetermined ratio RV2. If the remaining power of the power supply RS is equal to or higher than the remaining power threshold LV (e.g., when the power supply PS is charging), the controller 50 is configured to increase the first maximum voltage MV1 and the second maximum voltage MV2 to change the ratio RV of the first maximum voltage MV1 to the second maximum voltage MV2 from the predetermined ratio RV2 back to the initial ratio RV1. However, the controller 50 can be configured to change only one of the first maximum voltage MV1 and the second maximum voltage MV2 depending on the remaining power of the power supply PS, thereby changing the ratio of the second maximum voltage MV2 to the first maximum voltage MV1.

[0149] Just as with the first maximum voltage MV1 and the second maximum voltage MV2, the controller 50 can be configured to change at least one of the first moving speed SP1 and the second moving speed SP2 depending on the remaining charge of the power supply PS, thereby changing the ratio RV of the higher of the first moving speed SP1 and the lower of the second moving speed SP2. The controller 50 can be configured to change at least one of the first electric force EP1 and the second electric force EP2 depending on the remaining charge of the power supply PS, thereby changing the ratio RV of the higher of the first electric force EP1 and the lower of the second electric force EP2. The controller 50 can be configured to change at least one of the first output power PW1 and the second output power PW2 depending on the remaining charge of the power supply PS, thereby changing the ratio RV of the higher of the first output power PW1 and the lower of the second output power PW2.

[0150] As seen in Figures 10 and 11, in a normal mode, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 based on gear area information related to a gear corresponding area RG1 defined between the first gear position P1 and the second gear position P2. In the normal mode, if the movable member 14 is in the second gear position P2, the controller 50 is configured to control the motor unit 34 in response to the first control signal CS11 to move the movable member 14 from the second gear position P2 to the first gear position P1. If the movable member 14 is in the second gear position P2, the controller 50 is configured to control the motor unit 34 in response to the second control signal CS12 to maintain the movable member 14 in the second gear position P2. If the movable member 14 is in the first gear position P1, the controller 50 is configured to control the motor unit 34 in response to the second control signal CS12 to move the movable member 14 from the first gear position P1 to the second gear position P2. If the movable member 14 is in the first gear position P1, the controller 50 is configured to control the motor unit 34 in response to the first control signal CS11 so that the movable member 14 is maintained in the first gear position P1.

[0151] As shown in Figure 16, the controller 50 has an overtravel mode to facilitate the first and second gear shifting operations. For example, the operating device 3 or 4 (see, for example, Figure 7) includes a mode selection interface through which the user can select the mode of the controller 50 between a normal mode and an overtravel mode. In the overtravel mode, the controller 50 is configured to control the motor unit 34 to adjust the position of one of the movable members 14 based on overtravel information associated with an overtravel zone RG21 or RG22. The overtravel zone RG21 or RG22 includes a zone at least partially outside the gear corresponding zone RG1. The overtravel zone RG21 includes a first overtravel position P41. The overtravel zone RG22 includes a second overtravel position P42. The first overtravel position P41 and the second overtravel position P42 are located outside the gear corresponding zone RG1. The first gear position P1 and the second gear position P2 are located between the first overtravel position P41 and the second overtravel position P42.

[0152] In overtravel mode, controller 50 is configured to control motor unit 34 to move movable member 14 relative to base member 12 by a first adjustment distance DS11 along the first shift direction D11 when a first adjustment condition is met in the gear region information. In this embodiment, the first adjustment condition includes a condition in which movable member 14 reaches the first gear position P1. Therefore, if movable member 14 reaches the first gear position P1 during the first shift operation, controller 50 is configured to control motor unit 34 to move movable member 14 relative to base member 12 along the first shift direction D11 from the first gear position P1 to the first overtravel position P41. That is, in overtravel mode, controller 50 is configured to control motor unit 34 to move movable member 14 continuously along the first shift direction D11 from the second gear position P2 to the first overtravel position P41. The first adjustment distance DS11 is defined between the first gear position P1 and the first overtravel position P41.

[0153] After the controller 50 is configured to move the movable member 14 a first adjustment distance DS11 along the first shift direction D11, it controls the motor unit 34 to move the movable member 14 relative to the base member 12 a first return distance DS12 along the second shift direction D12. The first return distance DS12 is based on overtravel information. The first return distance DS12 is defined between the first gear position P1 and the first overtravel position P41.

[0154] In this embodiment, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first adjustment distance DS11 under a first maximum voltage MV1 when the gear area information meets the first adjustment condition. After the controller 50 is configured to move the movable member 14 by the first adjustment distance DS11 under the first maximum voltage MV1, the controller 50 controls the motor unit 34 to move the movable member 14 relative to the base member 12 by a first return distance DS12 under a second maximum voltage MV2.

[0155] The controller 50 is configured to, when the gear region information meets the first adjustment condition, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first adjustment distance DS11 at a first moving speed SP1. The controller 50 is configured to, after moving the movable member 14 by the first adjustment distance DS11, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first return distance DS12 at a second moving speed SP2.

[0156] The controller 50 is configured to, when the gear region information meets the first adjustment condition, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first adjustment distance DS11 according to the first electric force EP1. The controller 50 is also configured to, after moving the movable member 14 by the first adjustment distance DS11 according to the first electric force EP1, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first return distance DS12 according to the second electric force EP2.

[0157] The controller 50 is configured to, when the gear region information meets the first adjustment condition, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first adjustment distance DS11 according to the first output power PW1. The controller 50 is also configured to, after moving the movable member 14 by the first adjustment distance DS11 according to the first output power PW1, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first return distance DS12 according to the second output power PW2.

[0158] In this embodiment, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first adjustment distance DS11 under conditions identical to those of the first shift operation in the normal mode (e.g., first maximum voltage MV1, first moving speed SP1, first electric force EP1, and first output power PW1). However, the controller 50 can also be configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first adjustment distance DS11 under conditions different from those of the first shift operation in the normal mode.

[0159] The controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first return distance DS12 under conditions identical to those of the second shift operation in the normal mode (e.g., second maximum voltage MV2, second moving speed SP2, second electric force EP2, and second output power PW2). However, the controller 50 can also be configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a first return distance DS12 under conditions different from those of the second shift operation in the normal mode.

[0160] As shown in Figure 16, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 along the second shift direction D12 by a second adjustment distance DS21 when the gear region information satisfies a second adjustment condition. In this embodiment, the second adjustment condition includes a condition in which the movable member 14 reaches the second gear position P2. Therefore, if the movable member 14 reaches the second gear position P2 during the second shift operation, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 along the second shift direction D12 from the second gear position P2 to the second overtravel position P42. That is, in the overtravel mode, the controller 50 is configured to control the motor unit 34 to move the movable member 14 continuously from the first gear position P1 to the second overtravel position P42 along the second shift direction D12. The second adjustment distance DS21 is defined between the second gear position P2 and the second overtravel position P42.

[0161] After the controller 50 is configured to move the movable member 14 a second adjustment distance DS21 along the second shift direction D12, it controls the motor unit 34 to move the movable member 14 relative to the base member 12 a second return distance DS22 along the first shift direction D11. The second return distance DS22 is based on overtravel information. The second return distance DS22 is defined between the second gear position P2 and the second overtravel position P42.

[0162] In this embodiment, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second adjustment distance DS21 under a second maximum voltage MV2 when the gear area information meets the second adjustment condition. After the controller 50 is configured to move the movable member 14 by the second adjustment distance DS21 under the second maximum voltage MV2, the controller 50 controls the motor unit 34 to move the movable member 14 relative to the base member 12 by a second return distance DS22 under a first maximum voltage MV1.

[0163] The controller 50 is configured to, when the gear region information meets the second adjustment condition, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second adjustment distance DS21 at a second moving speed SP2. The controller 50 is also configured to, after moving the movable member 14 by the second adjustment distance DS21, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second return distance DS22 at a first moving speed SP1.

[0164] The controller 50 is configured to, when the gear region information meets the second adjustment condition, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second adjustment distance DS21 according to the second electric force EP2. The controller 50 is also configured to, after moving the movable member 14 by the second adjustment distance DS21 according to the second electric force EP2, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second return distance DS22 according to the first electric force EP1.

[0165] The controller 50 is configured to, when the gear region information meets the second adjustment condition, control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second adjustment distance DS21 according to the second output power PW2. After moving the movable member 14 by the second adjustment distance DS21 according to the second output power PW2, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second return distance DS22 according to the first output power PW1.

[0166] In this embodiment, the controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second adjustment distance DS21 under conditions identical to the second shift operation in the normal mode (e.g., second maximum voltage MV2, second moving speed SP2, second electric force EP2, and second output power PW2). However, the controller 50 can also be configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 by a second adjustment distance DS21 under conditions different from the second shift operation in the normal mode.

[0167] The controller 50 is configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 a second return distance DS22 under conditions identical to the first shift operation in the normal mode (e.g., first maximum voltage MV1, first moving speed SP1, first electric force EP1, and first output power PW1). However, the controller 50 can also be configured to control the motor unit 34 to move the movable member 14 relative to the base member 12 a second return distance DS22 under conditions different from the first shift operation in the normal mode.

[0168] The structure of the bicycle derailleur 10 can be adapted to bicycle derailleur RD, a gearbox, or other derailleurs. In other derailleurs, as seen in Figure 3, there is the same relationship between the gear ratio GR1 or GR2 and the direction of movement of the movable member 14.

[0169] In this application, as used herein, the term "comprising" and its derivatives are intended to be open-ended terms, specifying the presence of stated features, elements, components, groups, integers, and / or steps, but not excluding the presence of other unstated features, elements, components, groups, integers, and / or steps. This concept also applies to words with similar meanings, such as the terms "having," "comprising," and their derivatives.

[0170] When used in the singular, the terms “component,” “section,” “part,” “part,” “element,” “body,” and “structure” can have the dual meaning of a single component or a plurality of components.

[0171] The ordinal numbers used in this application (such as "first" and "second") are merely identifiers and have no other meaning, such as a particular order or the like. Furthermore, for example, the term "first element" does not imply the existence of one of the "second elements," and the term "second element" does not imply the existence of one of the "first elements."

[0172] As used herein, the term "pair" may cover configurations in which the pair of elements have the same shape or structure as each other, as well as configurations in which the pair of elements have different shapes or structures from each other.

[0173] The terms “a” (or “one”), “one or more” and “at least one” are used interchangeably in this document.

[0174] As used in this invention, the phrase "at least one of..." means "one or more" to be selected. For one instance, as used in this invention, the phrase "at least one of..." means "only one selection" or "both of the two selections," provided that the number of selections is two. For other instances, as used in this invention, the phrase "at least one of..." means "only one selection" or "any combination equal to or greater than two selections," provided that the number of selections is equal to or greater than three. For example, the phrase "at least one of A and B" covers (1) A alone, (2) B alone, and (3) both A and B. The phrase "at least one of A, B, and C" covers (1) A alone, (2) B alone, (3) C alone, (4) both A and B, (5) both B and C, (6) both A and C, and (7) all of A, B, and C. In other words, in this invention, the phrase "at least one of A and B" does not mean "at least one of A and at least one of B".

[0175] Finally, the degree terms used herein (such as "substantially," "about," and "approximately") mean that a reasonable deviation from one of the terms being modified does not significantly change the final result. All numerical values ​​described in this application may be interpreted as including terms such as "substantially," "about," and "approximately."

[0176] Obviously, numerous modifications and variations of the present invention are possible in light of the foregoing teachings. Therefore, it should be understood that the present invention may be practiced in ways other than those specifically described herein, within the scope of the appended claims.

[0177] 2: Bicycle 2A: Bicycle frame 2B: Saddle 2C: Handlebars 3: Operating device 4: Operating device 6: Junction Box 7: Install fasteners 8: Fixture 10: Bicycle derailleur 12: Base components 14: Movable components 18: Chain guide 18A: First guiding component 18B: Second guidance component 20: Linkage Structure 22: First connecting rod component 24: Second Linkage Member 26: First connecting rod pin 28: Second Linkage Pin 30: Third Linkage Pin 32: Fourth Linkage Pin 33: Offset component 34: Motor Unit 34A: Output shaft component 35: Motor 36: Gear Structure 38: Gear 40: Casing 42: First shell 42A: Accommodation space 42B: First housing support component 44: Second shell 44B: Second housing support component 45: Third shell 50: Controller 50C: Circuit board 50D: System Bus 50M: Memory 50P: Processor 51: Port 52: Motor driver 54:Communicator 56: Rotation sensor C: Chain CR: Crank CS11: First control signal CS12: Second control signal CS21: First control signal CS22: Second control signal D11: First shift direction D12: Second shift direction DS11: First adjustment distance DS12: First return distance DS21: Second Adjustment Distance DS22: Second return distance DT: Drive wheel system EC: Electrical wiring structure EC1: Cable EC2: Cable EP1: The First Electric Force EP2: Second Electric Force EP31: The Third Electric Force EP32: The Third Electric Force FS: Front sprocket assembly FS1: Bicycle front sprocket / larger sprocket FS2: Bicycle front sprocket / smaller sprocket G8: Sensor Gear G10: Output gear GR1: First gear ratio GR2: Second gear ratio INF1: Gear Position Information LV: Remaining battery level limit MV1: First maximum voltage MV2: Second maximum voltage MV31: Third Maximum Voltage MV32: Third Maximum Voltage P1: Position of the first gear P2: Position of the second gear P11: Initial gear position P12: Position of the first adjusting gear P21: Position of the second initial gear P22: Position of the second adjusting gear P31: Gear Position P32: Gear Position P33: Gear Position P34: Gear Position P35: Gear Position P36: Gear Position P37: Gear Position P41: First Hypertravel Position P42: Second Overtravel Position PA1: First pivot axis PA2: Second pivot axis PA3: Third pivot axis PA4: Fourth pivot axis PS: Power supply PW1: First Output Power PW2: Second Output Power PW31: Third Output Power PW32: Third Output Power RD: Bicycle derailleur / Extra derailleur RD1: Base component RD2: Movable component RD3: Linkage Structure RD4: Motor Unit RD5: Controller RD21: Movable Entity RD22: Chain Guide RG1: Gear Corresponding Area RG21: Overtravel Zone RG22: Overtravel Zone RS: Rear sprocket assembly RS1: Bicycle rear sprocket RS2: Bicycle rear sprocket RS3: Bicycle rear sprocket RS4: Bicycle rear sprocket RS5: Bicycle rear sprocket RS6: Bicycle rear sprocket RS7: Bicycle rear sprocket RV: than RV1: Initial ratio RV2: Reservation Ratio SP1: First Movement Speed SP2: Second Movement Speed SP31: Third Movement Speed SP32: Third Movement Speed T1: Operation time in the first direction T2: Second direction operation time U11: First User Input U12: Second User Input U21: First User Input U22: Second user input

Claims

1. A bicycle derailleur, comprising: A base component; A movable member configured to be movably coupled to the base member, the movable member being movable relative to the base member from a second gear position to a first gear position to move a chain along a first shift direction, the movable member being movable relative to the base member from the first gear position to the second gear position to move the chain along a second shift direction, the second shift direction being the opposite of one of the first shift directions; a motor unit configured to move the movable member relative to the base member between the first gear position and the second gear position; and a controller configured to control the motor unit to rotate an output shaft of the motor unit at a first maximum voltage during a first shift operation of the chain along one of the first shift directions; wherein the controller is configured to control the motor unit at an additional maximum voltage to adjust the position of the movable member based on gear position information of an additional derailleur, the additional derailleur being a derailleur separate from the bicycle derailleur, the additional maximum voltage being lower than the first maximum voltage.

2. The bicycle derailleur as requested in claim 1, wherein the gear position information of the additional derailleur includes the current gear position of one of a plurality of additional derailleur gear positions of the additional derailleur.

3. The bicycle derailleur of claim 1, wherein the bicycle derailleur is configured to receive gear position information transmitted from the additional derailleur during a shifting operation of the additional derailleur.

4. The bicycle derailleur of claim 2, wherein the first gear position includes a second initial gear position and a second adjustment gear position different from the second initial gear position; the controller is configured to control the motor unit to move the movable member from the second adjustment gear position to the second initial gear position when the gear position of the additional derailleur changes from a second additional derailleur gear position to a first additional derailleur gear position based on the gear position information, the first additional derailleur gear position corresponding to a minimum sprocket, and the second additional derailleur gear position corresponding to a sprocket adjacent to the minimum sprocket.

5. The bicycle derailleur of claim 4, wherein the controller is configured to control the motor unit to maintain the moving member at the second initial gear position if the gear position of the additional derailleur changes among the plurality of additional derailleur gear positions other than the first additional derailleur gear position based on the gear position information.

6. A bicycle derailleur, comprising: A base component; A movable member configured to be movably coupled to the base member, the movable member being movable relative to the base member from a second gear position to a first gear position to move a chain along a first shift direction, the movable member being movable relative to the base member from the first gear position to the second gear position to move the chain along a second shift direction, the second shift direction being the opposite of the first shift direction; a motor unit configured to move the movable member relative to the base member between the first gear position and the second gear position; and a controller configured to control the motor unit to move the movable member relative to the base member along the first shift direction at a first moving speed; wherein the controller is configured to control the motor unit at an additional moving speed to adjust the position of the movable member based on gear position information of an additional derailleur, the additional derailleur being a derailleur separate from the bicycle derailleur, the additional moving speed being lower than the first moving speed.

7. The bicycle derailleur as requested in claim 6, wherein the gear position information of the additional derailleur includes the current gear position of one of a plurality of additional derailleur gear positions of the additional derailleur.

8. The bicycle derailleur of claim 6, wherein the bicycle derailleur is configured to receive gear position information transmitted from the additional derailleur during a shift operation of the additional derailleur.

9. The bicycle derailleur of claim 7, wherein the first gear position includes a second initial gear position and a second adjustment gear position different from the second initial gear position; the controller is configured to control the motor unit to move the movable member from the second adjustment gear position to the second initial gear position when the gear position of the additional derailleur changes from a second additional derailleur gear position to a first additional derailleur gear position based on the gear position information, the first additional derailleur gear position corresponding to a minimum sprocket, and the second additional derailleur gear position corresponding to a sprocket adjacent to the minimum sprocket.

10. The bicycle derailleur of claim 9, wherein the controller is configured to control the motor unit to maintain the moving member at the second initial gear position if the gear position of the additional derailleur changes among the plurality of additional derailleur gear positions other than the first additional derailleur gear position based on the gear position information.

11. The bicycle derailleur of claim 6, wherein the controller is configured to control the motor unit to move the movable member relative to the base member along the first shift direction at a first moving speed, and the controller is configured to control the motor unit to move the movable member relative to the base member along the second shift direction at a second moving speed different from the first moving speed.

12. The bicycle derailleur of claim 11, wherein the controller is configured to control the motor unit to generate a first output power in a state in which the motor unit moves the movable member relative to the base member along the first shift direction at the first moving speed; the controller is configured to control the motor unit to generate a second output power in a state in which the motor unit moves the movable member relative to the base member along the second shift direction at the second moving speed, and the second output power is different from the first output power.

13. The bicycle derailleur of claim 12, wherein the controller is configured to control the motor unit to move the movable member according to a third output power to adjust the position of the movable member based on the gear position information of the additional derailleur; and the third output power is different from the first output power and the second output power.

14. The bicycle derailleur of claim 12 or 13, wherein each of the first output power and the second output power includes the output torque of one of the motor units.

15. The bicycle derailleur of claim 11, wherein the controller is configured to control the power supply to the motor unit by a first electrical force in a state where the motor unit moves the movable member relative to the base member during the first shift operation; the controller is configured to control the power supply to the motor unit by a second electrical force in a state where the motor unit moves the movable member relative to the base member during the second shift operation, and the first electrical force is different from the second electrical force.

16. The bicycle derailleur of claim 15, wherein the controller is configured to control the motor unit to move the movable member according to a third electric force to adjust the position of the movable member based on the gear position information of the additional derailleur; and the third electric force is different from the first electric force and the second electric force.

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