Bicycle derailleur, bicycle gear structure, bicycle motor unit, and front derailleur

Abstract

This invention discloses a bicycle derailleur, comprising a base member, a linkage structure, and a motor unit. The linkage structure includes a first link pin rotatably mounted to the base member about a first pivot. The motor unit is configured to apply a rotational force to the first link pin, causing the first link pin to rotate relative to the base member about the first pivot.

Description

Technical Field

[0001] This invention relates to a bicycle derailleur, a bicycle gear structure, a bicycle motor unit, and a front derailleur. 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 embodiment of the present invention, a bicycle derailleur includes a base member, a linkage structure, and a motor unit. The linkage structure includes a first link pin rotatably mounted to the base member about a first pivot. The motor unit is configured to apply a rotational force to the first link pin, causing the first link pin to rotate relative to the base member about the first pivot.

[0004] In the case of the bicycle derailleur of the first type, the first link pin can be used to rotate another component about the first pivot relative to the base component and / or to rotatably support another component about the first pivot relative to the base component.

[0005] According to a second embodiment of the present invention, the bicycle derailleur of the first embodiment is configured such that the linkage structure includes a first linkage member coupled to the first linkage pin so as to be pivotable about the first pivot relative to the base member.

[0006] In the case of the bicycle derailleur of the first type, the first link pin can be used to rotate the first link member relative to the base member about the first pivot and / or rotatably support the first link member relative to the base member about the first pivot.

[0007] According to a third embodiment of the invention, the bicycle derailleur of the second embodiment further includes a chain guide pivotally coupled to the first link member to move relative to the base member in response to pivotal movement of the first link member relative to the base member.

[0008] Regarding the bicycle derailleur of the third type, the first link pin can be reliably used to move the chain guide relative to the base member and / or reliably support the chain guide movably relative to the base member.

[0009] According to a fourth embodiment of the present invention, a bicycle derailleur of any one of the first to third embodiments is configured such that the motor unit includes an output structure coupled to the first link pin to be rotatable about the first pivot relative to the base member.

[0010] In the case of a bicycle derailleur of the fourth type, the first connecting pin and the output structure can rotate together around the first pivot.

[0011] According to a fifth embodiment of the present invention, the bicycle derailleur of the fourth embodiment is configured such that at least one of the first connecting pin and the output structure includes a first coupling member. The first connecting member includes a second coupling member. The first coupling member engages with the second coupling member to transmit the rotational force from the first connecting pin and the at least one of the output structure to the first connecting member.

[0012] In the case of the bicycle derailleur of the fifth type, the rotational force can be transmitted from the first link pin and at least one of the output structure to the first link member through the first coupling member and the second coupling member.

[0013] According to a sixth embodiment of the present invention, the bicycle derailleur of the fifth embodiment is configured such that, when viewed along the first pivot, the first coupling member has a first profile other than a perfect circle. When viewed along the first pivot, the second coupling member has a second profile other than a perfect circle.

[0014] In the case of the bicycle derailleur of the sixth type, the rotational force can be reliably transmitted from the first link pin and the output structure to the first link member through the first coupling member and the second coupling member.

[0015] According to a seventh embodiment of the present invention, the bicycle derailleur of the sixth embodiment is configured such that the first contour of the first coupling member has a polygonal shape. The second contour of the second coupling member has a polygonal shape.

[0016] In the case of the bicycle derailleur of the seventh type, the rotational force can be transmitted more reliably from the first link pin and the output structure to the first link member through the first coupling member and the second coupling member.

[0017] According to an eighth embodiment of the present invention, the bicycle derailleur of the fifth embodiment is configured such that the first coupling member includes at least one first flat surface. The second coupling member includes at least one second flat surface. In a state in which the first coupling member and the second coupling member are engaged, the at least one first flat surface may contact the at least one second flat surface to transmit the rotational force from the first connecting pin and at least one of the output structure to the first connecting member.

[0018] In the case of the bicycle derailleur of the eighth type, the rotational force can be reliably transmitted from the first link pin and the output structure to the first link member through the first coupling member and the second coupling member.

[0019] According to a ninth embodiment of the present invention, a bicycle derailleur based on any one of the first to fifth embodiments is configured such that the output structure includes a meshing body and a gear portion. The meshing body includes a first meshing bore. The gear portion is provided on the meshing body. The first connecting rod pin includes a first meshing member. The first meshing member is provided in the first meshing bore to transmit the rotational force from the output structure to the first connecting rod pin.

[0020] In the case of the bicycle derailleur of the ninth type, the rotational force can be transmitted from the output structure to the first connecting pin through the first engaging member and the first engaging hole.

[0021] According to a tenth embodiment of the present invention, the bicycle derailleur of the ninth embodiment is configured such that, when viewed along the first pivot, the first engaging member has an outer contour other than a perfect circle. When viewed along the first pivot, the first engaging hole has an inner contour other than a perfect circle.

[0022] In the case of the bicycle derailleur of the tenth type, the rotational force can be reliably transmitted from the output structure to the first connecting pin through the first engaging member and the first engaging hole.

[0023] According to one of the eleventh embodiments of the present invention, the bicycle derailleur of the ninth embodiment is configured such that the first engaging member engages frictionally with the first engaging hole.

[0024] In the case of the bicycle derailleur of the eleventh type, the rotational force can be reliably transmitted from the output structure to the first connecting pin through the first engaging member and the first engaging hole.

[0025] According to a twelfth embodiment of the present invention, the bicycle derailleur of the tenth embodiment is configured such that the outer contour of the first engaging member has a polygonal shape. The inner contour of the first engaging hole has a polygonal shape.

[0026] In the case of the bicycle derailleur of the twelfth type, the rotational force can be transmitted more reliably from the output structure to the first connecting pin through the first engaging member and the first engaging hole.

[0027] According to a thirteenth embodiment of the present invention, the bicycle derailleur of the ninth embodiment is configured such that the first engaging member includes at least one outer flat surface. The first engaging bore includes at least one inner flat surface. In one state in which the first engaging member is provided in the first engaging bore, the at least one outer flat surface can contact the at least one inner flat surface to transmit the rotational force from the output gear to the first connecting rod pin.

[0028] In the case of the bicycle derailleur of the thirteenth type, the rotational force can be reliably transmitted from the output structure to the first connecting pin through the first engaging member and the first engaging hole.

[0029] According to a fourteenth embodiment of the present invention, the bicycle derailleur of the ninth embodiment is configured such that the engaging body includes a tubular component and a sleeve, the sleeve being a component separate from the tubular component. The sleeve includes the first engaging hole and a second engaging component. The tubular component includes the second engaging hole. The second engaging component is provided in the second engaging hole to transmit the rotational force from the tubular component to the sleeve.

[0030] In the case of the bicycle derailleur of the fourteenth type, the rotational force can be transmitted from the tubular component to the sleeve through the second engaging member and the second engaging hole.

[0031] According to a fifteenth embodiment of the present invention, the bicycle derailleur of the fourteenth embodiment is configured such that, when viewed along the first pivot, the second engaging member has an additional outer contour in addition to a perfect circle. When viewed along the first pivot, the second engaging hole has an additional inner contour in addition to a perfect circle.

[0032] In the case of the bicycle derailleur of the fifteenth type, the rotational force can be reliably transmitted from the tubular component to the sleeve through the second engaging member and the second engaging hole.

[0033] According to a sixteenth embodiment of the present invention, the bicycle derailleur of the fifteenth embodiment is configured such that the additional outer contour of the second engaging member has a polygonal shape. The additional inner contour of the second engaging hole has a polygonal shape.

[0034] In the case of the bicycle derailleur of the sixteenth type, the rotational force can be transmitted more reliably from the tubular component to the sleeve through the second engagement member and the second engagement hole.

[0035] According to a seventeenth embodiment of the invention, the bicycle derailleur of the fourteenth embodiment is configured such that the second engaging member includes at least one additional outer flat surface. The second engaging bore includes at least one additional inner flat surface. The at least one additional outer flat surface can contact the at least one additional inner flat surface to transmit the rotational force from the tubular member to the sleeve.

[0036] In the case of the bicycle derailleur of the seventeenth type, the rotational force can be reliably transmitted from the tubular component to the sleeve through the second engaging member and the second engaging hole.

[0037] According to one of the eighteenth embodiments of the present invention, the bicycle derailleur of the fourteenth embodiment is configured such that the second engaging member engages frictionally with the second engaging hole.

[0038] In the case of the bicycle derailleur of the eighteenth type, the rotational force can be reliably transmitted from the tubular component to the sleeve through the second engaging member and the second engaging hole.

[0039] According to the nineteenth embodiment of the present invention, a bicycle derailleur according to any one of the first to eighteenth embodiments is configured such that the base member includes a first support hole and a second support hole spaced apart from the first support hole along the first pivot. The first connecting rod pin includes a first end and a second end. The first end is provided in the first support hole. The second end is provided in the second support hole.

[0040] Regarding the bicycle derailleur according to the nineteenth type, the first support hole and the second support hole can be used to rotatably support the first link pin relative to the base member.

[0041] According to a twentieth embodiment of the present invention, a bicycle derailleur according to any one of the first to nineteenth embodiments is configured such that the linkage structure includes a second linkage member, a second linkage pin, a third linkage pin, and a fourth linkage pin. The second linkage pin is configured to pivotally couple the second linkage member to the base member about a second pivot. The third linkage pin is configured to pivotally couple the first linkage member to the chain guide about a third pivot. The fourth linkage pin is configured to pivotally couple the second linkage member to the chain guide about a fourth pivot.

[0042] In the case of the bicycle derailleur of the twentieth state, the chain guide can be movably coupled to the base member through the linkage structure.

[0043] According to a twenty-first embodiment of the present invention, a bicycle gear structure includes a torque diode, a first transmission gear, and a first additional transmission gear. The torque diode includes a housing, a first shaft, and a second shaft. The first shaft is rotatably mounted to the housing about a first rotation axis. The second shaft is rotatably mounted to the housing about a second rotation axis. The first transmission gear is attached to the first shaft. The first additional transmission gear meshes with the first transmission gear and is rotatably mounted to the housing about a third rotation axis offset from both the first and second rotation axes.

[0044] Regarding the bicycle gear structure according to the twenty-first embodiment, the housing of the torque diode can be used to rotatably support the first additional transmission gear that meshes with the first transmission gear. Therefore, the construction of the bicycle gear structure can be simplified.

[0045] According to a twenty-second embodiment of the present invention, the bicycle gear structure according to a twenty-first embodiment further includes a support pin. The housing includes a gear support hole. The first additional drive gear is attached to the support pin. The support pin is rotatably provided in the gear support hole.

[0046] Regarding the bicycle gear structure according to the twenty-second configuration, a simple structure such as the support pin and the gear support hole can be used to rotatably support the first additional transmission gear.

[0047] According to a twenty-third embodiment of the present invention, the bicycle gear structure of the twenty-second embodiment is configured such that the housing includes a housing body and a gear support member extending radially outward from the housing body relative to the first rotation axis. The gear support member includes the gear support hole.

[0048] Regarding the bicycle gear structure according to the twenty-third form, a simple structure such as the housing body and the gear support component can be used to rotatably support the first additional transmission gear.

[0049] According to a twenty-fourth embodiment of the present invention, the bicycle gear structure of the twenty-third embodiment is configured such that the housing includes a fixing member configured to be fixed to another component. The fixing member extends radially outward from the housing body relative to the first rotation axis and includes a fixing hole.

[0050] Regarding the bicycle gear structure according to the twenty-fourth type, this fixing component can be used to fix the torque diode to another component.

[0051] According to one twenty-fifth embodiment of the present invention, the bicycle gear structure according to any one of the twenty-first to twenty-fourth embodiments further includes a second transmission gear attached to one of the second shaft members.

[0052] Regarding the bicycle gear structure according to the twenty-fifth type, the second shaft can be coupled to another gear through the second transmission gear.

[0053] According to one of the twenty-sixth embodiments of the present invention, the bicycle gear structure according to any one of the twenty-first to twenty-fifth embodiments is configured such that the outer diameter of one of the first transmission gears is larger than the outer diameter of one of the first additional transmission gears.

[0054] Regarding the bicycle gear structure according to the twenty-sixth configuration, the torque diode can be used to support the first transmission gear and the first additional transmission gear, which have different outer diameters.

[0055] According to one of the twenty-seventh embodiments of the present invention, the bicycle gear structure according to any one of the twenty-first to twenty-sixth embodiments is configured such that the first rotating shaft coincides with the second rotating shaft.

[0056] Regarding the bicycle gear structure according to the twenty-seventh configuration, the first shaft and the second shaft can be coaxially configured.

[0057] According to one twenty-eighth embodiment of the present invention, a bicycle motor unit includes a motor and a bicycle gear structure according to one of the twenty-first to twenty-seventh embodiments. The motor is configured to generate rotational force. The bicycle gear structure is configured to transmit the rotational force.

[0058] In the case of the bicycle motor unit according to the twenty-eighth configuration, the torque diode of the bicycle gear structure limits the torque transmission to the motor. Therefore, the motor can be protected.

[0059] According to a twenty-ninth embodiment of the present invention, a bicycle derailleur includes a base member, a chain guide, a linkage structure, and a bicycle motor unit according to a twenty-eighth embodiment. The chain guide is movable relative to the base member. The linkage structure is configured to movably couple the chain guide to the base member. The bicycle motor unit is configured to apply a rotational force to at least one of the chain guide and the linkage structure to move the chain guide relative to the base member.

[0060] Regarding the bicycle derailleur of the twenty-ninth type, the bicycle motor unit can be used to move the chain guide relative to the base member while protecting the motor from the torque transmitted from the chain guide.

[0061] According to a thirtieth aspect of the present invention, a front transmission includes a base member, a chain guide, a linkage structure, and a motor unit. The chain guide is movable relative to the base member. The linkage structure is configured to movably couple the chain guide to the base member. The motor unit is configured to apply a rotational force to at least one of the chain guide and the linkage structure to move the chain guide relative to the base member. The motor unit includes a motor and a gear structure. The motor is configured to generate the rotational force. The gear structure includes a plurality of spur gears configured to transmit the rotational force to the at least one of the chain guide and the linkage structure. In a rotational force transmission path from the motor to the at least one of the chain guide and the linkage structure, the motor unit has no other gears besides the plurality of spur gears.

[0062] Based on the transmission before the thirtieth state, the construction of the gear structure can be simplified.

[0063] According to one of the thirty-first embodiments of the present invention, the bicycle transmission according to the thirty-first embodiment is configured such that the gear structure has a reduction ratio equal to or less than 1400.

[0064] Regarding the bicycle derailleur of the thirty-first type, the bicycle derailleur can be made more compact while ensuring the rotational force required for the chain guide to move relative to the base member.

[0065] According to a thirty-second embodiment of the present invention, a bicycle derailleur includes a base member, a chain guide, a linkage structure, and a motor unit. The chain guide is movable relative to the base member. The linkage structure is configured to movably couple the chain guide to the base member. The motor unit is configured to apply a rotational force to at least one of the chain guide and the linkage structure to move the chain guide relative to the base member. The motor unit includes a motor and a gear structure. The gear structure includes a plurality of spur gears configured to transmit the rotational force to the at least one of the chain guide and the linkage structure. The gear structure has a reduction ratio equal to or less than 1400.

[0066] Regarding the bicycle derailleur of the thirty-second type, the bicycle derailleur can be made more compact while ensuring the rotational force required for the chain guide to move relative to the base member.

[0067] According to one of the thirty-third embodiments of the present invention, the bicycle derailleur of the thirty-second embodiment is configured such that, in a rotational force transmission path from the motor to at least one of the chain guide and the linkage structure, the motor unit has no other gears besides the plurality of spur gears.

[0068] Regarding the bicycle gearbox of the thirty-third type, the construction of the gear structure can be simplified.

[0069] According to one of the thirty-fourth embodiments of the present invention, a bicycle derailleur according to any one of the thirty-third to thirty-third embodiments is configured such that the motor includes an output shaft. The plurality of spur gears includes an input gear and an output gear. The input gear is fixed to the output shaft. The output gear is coupled to at least one of the chain guide and the linkage assembly. The reduction ratio is defined by the input gear and the output gear.

[0070] Regarding the transmission prior to the thirty-fourth state, one of the motors can be made smaller and / or the chain guide can be moved relative to the base member with greater power.

[0071] According to one of the thirty-fifth embodiments of the present invention, the bicycle transmission according to the thirty-fourth embodiment is configured such that the output gear includes a sector gear.

[0072] Regarding the transmission prior to the thirty-fifth state, the output gear can be made smaller.

[0073] According to one of the thirty-sixth embodiments of the present invention, the bicycle transmission according to any one of the thirty-second to thirty-fifth embodiments further includes a rotation sensor configured to sense the rotational position of one of the plurality of spur gears.

[0074] Regarding the bicycle derailleur of the thirty-sixth type, the position of one of the chain guides can be obtained by using the rotational position sensed by the rotation sensor.

[0075] According to one of the thirty-seventh embodiments of the present invention, the bicycle derailleur of the thirty-sixth embodiment is configured such that the plurality of spur gears include a sensor gear. The rotation sensor is configured to sense the rotational position of the sensor gear.

[0076] Regarding the bicycle derailleur of the thirty-seventh type, the position of the chain guide can be reliably obtained by using the rotational position sensed by the rotation sensor.

[0077] According to a thirty-eighth aspect of the present invention, a front transmission includes a base member, a chain guide, a linkage structure, and a motor unit. The chain guide is movable relative to the base member. The linkage structure is configured to movably couple the chain guide to the base member. The motor unit is configured to apply a rotational force to at least one of the chain guide and the linkage structure to move the chain guide relative to the base member. The motor unit includes a motor, a gear structure, and a gear support structure. The motor is configured to generate the rotational force. The gear structure includes a plurality of gears configured to transmit the rotational force to the at least one of the chain guide and the linkage structure. The gear support structure is configured to rotatably support the plurality of gears. The plurality of gears includes a first gear, a second gear, a third gear, a first pin, a second pin, and a third pin. The first gear is rotatable relative to the gear support structure about a first gear axis. The second gear is rotatable relative to the gear support structure about a second gear axis. The third gear is rotatable about a third gear shaft relative to the gear support structure. The first pin is configured to rotatably support the first gear about the first gear shaft. The first pin includes a first pin end and a first opposing pin end. The second pin is configured to rotatably support the second gear about the second gear shaft. The second pin includes a second pin end and a second opposing pin end. The third pin is configured to rotatably support the third gear about the third gear shaft. The third pin includes a third pin end and a third opposing pin end. The gear support structure includes a first support member, a second support member, a third support member, and a fourth support member. The first support member is configured to support the first pin end and the second pin end. The second support member is configured to support the second opposing pin end and the third pin end. The second support member is a separate component from the first support member. The third support member is configured to support the third opposing pin end. The fourth support member is configured to support the first opposing pin end.

[0078] Regarding the transmission prior to the thirty-eighth state, the design flexibility of the motor unit can be improved.

[0079] According to a thirty-ninth embodiment of the present invention, the bicycle derailleur of the thirty-eighth embodiment is configured such that the plurality of gears includes a first additional gear rotatable about the first gear shaft relative to the gear support structure. The first pin is configured to rotatably support the first gear and the first additional gear about the first gear shaft.

[0080] Regarding the transmission as described in the thirty-ninth state, the first pin can be used to support the first gear and the first additional gear. Therefore, the construction of the motor unit can be simplified.

[0081] According to one of the fortieth embodiments of the present invention, the bicycle derailleur of the thirty-eighth or thirty-ninth embodiment is configured such that the plurality of gears includes a second additional gear rotatable about the second gear shaft relative to the gear support structure. The second pin is configured to rotatably support the second gear and the second additional gear about the second gear shaft.

[0082] Regarding the transmission as described in the fortieth state, the second pin can be used to support the second gear and the second additional gear. Therefore, the construction of the motor unit can be simplified.

[0083] According to one of the forty-first embodiments of the present invention, a bicycle derailleur according to any one of the thirty-eighth to fortyth embodiments is configured such that the gear structure includes a torque diode. The torque diode includes a housing, a first shaft, and a second shaft. The first shaft is rotatably mounted to the housing about a first rotation axis. The second shaft is rotatably mounted to the housing about a second rotation axis. The housing of the torque diode includes at least one of the first support, the second support, the third support, and the fourth support.

[0084] Regarding the transmission as described in the forty-first state, the housing of the torque diode can be used as a support member configured to rotatably support one of the plurality of gears. Therefore, the construction of the motor unit can be simplified. Simple Explanation of the Diagram

[0085] A more complete and better understanding of the invention and its many accompanying advantages will be readily obtained by referring to the following detailed description in conjunction with the accompanying drawings.

[0086] Figure 1 is a side view of a bicycle according to a first embodiment of a bicycle transmission.

[0087] Figure 2 is a side view of the bicycle derailleur shown in Figure 1.

[0088] Figure 3 is a cross-sectional view of a bicycle derailleur taken along line III-III of Figure 6.

[0089] Figure 4 is a cross-sectional view of a bicycle derailleur taken along line IV-IV in Figure 3.

[0090] Figure 5 is a front view of one of the bicycle derailleurs shown in Figure 2.

[0091] Figure 6 is a perspective view of one of the bicycle derailleurs shown in Figure 2.

[0092] Figure 7 is a rear view of one of the bicycle derailleurs shown in Figure 2.

[0093] Figure 8 is a perspective view of one of the motor units and one of the linkage components of the bicycle gearbox shown in Figure 2.

[0094] Figure 9 is an exploded perspective view of the motor unit and connecting rod components of the bicycle derailleur shown in Figure 2.

[0095] Figure 10 is a cross-sectional view of a bicycle derailleur obtained along line XX in Figure 3.

[0096] Figure 11 is a cross-sectional view of a bicycle derailleur taken along line XI-XI in Figure 3.

[0097] Figure 12 is a cross-sectional view of a bicycle derailleur taken along line XII-XII in Figure 3.

[0098] Figure 13 is a cross-sectional view of a bicycle derailleur taken along line XIII-XIII in Figure 3.

[0099] Figure 14 is a cross-sectional view of a bicycle derailleur taken along line XIV-XIV in Figure 5.

[0100] Figure 15 is an exploded perspective view of one of the gear structures of the motor unit shown in Figure 9.

[0101] Figure 16 is an exploded perspective view of one of the motor units of the bicycle derailleur shown in Figure 2.

[0102] Figure 17 is a cross-sectional view of one of the bicycle derailleurs shown in Figure 2.

[0103] Figure 18 is a cross-sectional view of one of the bicycle derailleurs shown in Figure 2.

[0104] Figure 19 is a schematic block diagram of one of the bicycle derailleurs shown in Figure 2.

[0105] Figure 20 is a perspective cross-sectional view of one of the bicycle derailleurs shown in Figure 2.

[0106] Figure 21 is a cross-sectional view of a bicycle derailleur taken along line XXI-XXI in Figure 18.

[0107] Figure 22 is a cross-sectional view of a bicycle transmission according to one of the modifications.

[0108] Figure 23 is a perspective view of one of the bicycle derailleurs shown in Figure 2.

[0109] Figure 24 is a cross-sectional view of a bicycle derailleur taken along line XXIV-XXIV in Figure 2.

[0110] Figure 25 is a partial view of the bicycle derailleur shown in Figure 2.

[0111] Figure 26 is a cross-sectional view of a bicycle transmission according to one of the modified examples.

[0112] Figure 27 is a side view of a bicycle transmission according to one of the second embodiments.

[0113] Figure 28 is a perspective view of one of the bicycle derailleurs shown in Figure 27.

[0114] Figure 29 is a front view of one of the bicycle derailleurs shown in Figure 27.

[0115] Figure 30 is an exploded perspective view of the motor unit and connecting rod components of the bicycle derailleur shown in Figure 27.

[0116] Figure 31 is a cross-sectional view of a bicycle derailleur taken along line XXXI-XXXI in Figure 34.

[0117] Figure 32 is a partial perspective view of one of the linkage components of a bicycle derailleur shown in Figure 27.

[0118] Figure 33 is a cross-sectional view of a bicycle derailleur taken along line XXXIII-XXXIII in Figure 34.

[0119] Figure 34 is a cross-sectional view of a bicycle derailleur taken along line XXXIV-XXXIV in Figure 28.

[0120] Figure 35 is an exploded perspective view of one of the bicycle derailleurs shown in Figure 27.

[0121] Figure 36 is a cross-sectional view of a bicycle derailleur taken along line XXXVI-XXXVI of Figure 28.

[0122] Figure 37 is a cross-sectional view of a bicycle transmission according to one of the modified examples.

[0123] Figure 38 is a perspective view of a bicycle gearbox according to one of the modifications.

[0124] Figure 39 is a side view of the bicycle derailleur shown in Figure 38.

[0125] Figure 40 is an exploded perspective view of one of the chain guides of a bicycle derailleur, as shown in Figure 38.

[0126] Figure 41 is a perspective view of one of the first guide members of the chain guide of the bicycle derailleur shown in Figure 38.

[0127] Figure 42 is a partial perspective view of one of the second guide members of the chain guide of the bicycle derailleur shown in Figure 38.

[0128] Figure 43 is a plan view of one of the chain guides of a bicycle derailleur, as shown in Figure 38. Implementation

[0129] Several embodiments will now be described with reference to the accompanying drawings, wherein in all the various drawings, the same element symbols indicate corresponding or identical elements. First Embodiment

[0130] As shown in Figure 1, a bicycle 2 includes a bicycle derailleur 10 according to one of the first embodiments. The bicycle 2 further includes a frame 2A, a seat 2B, a handlebar 2C, an operating device 3, an operating device 4, a drivetrain DT, and a power source PS. Operating devices 3 and 4 are configured to be mounted to the handlebar 2C. The drivetrain DT includes a crank CR, a front sprocket assembly FS, a rear sprocket assembly RS, a chain C, and a bicycle derailleur RD. The front sprocket assembly FS is fixed to the crank CR. The rear sprocket assembly RS is rotatably mounted to the frame 2A. The chain C engages with the front sprocket assembly FS and the rear sprocket assembly RS. The bicycle derailleur RD is mounted to the frame 2A and configured to shift a gear relative to a plurality of sprockets in the rear sprocket assembly RS. The bicycle derailleur 10 is configured to shift a gear relative to a plurality of sprockets in the front sprocket assembly FS. The power source PS is configured to be mounted to the frame 2A. In the first embodiment, the power source PS is configured to be mounted on a lower tube of the vehicle body 2A. However, the power source PS can be configured to be mounted to other parts of the vehicle body 2A, such as a tube. The power source PS can also be configured to be directly mounted to other devices such as the bicycle derailleur 10 or RD.

[0131] 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 the first 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. The bicycle derailleur 10 is electrically connected to the power supply PS via cable EC2. 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, RD, and power supply PS are configured to communicate with each other using power line communication (PLC). However, the bicycle derailleur 10, RD, and power supply PS can be configured to communicate with each other using other communication methods such as wireless communication.

[0132] In the first embodiment, the bicycle derailleur RD is configured to wirelessly communicate 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 cables EC1 and EC2. The bicycle derailleur RD is configured to transmit control signals wirelessly transmitted from operating device 4 to the bicycle derailleur RD to the bicycle derailleur 10 via a power supply PS and cables EC1 and EC2.

[0133] 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 cables EC1 and EC2 and an additional device such as a junction box 6. Bicycle derailleur RD and power supply PS can each be configured to be electrically connected to bicycle derailleur 10 via cables EC1 and EC2 when bicycle derailleur 10 has multiple 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 when bicycle derailleur RD has multiple connection ports. Bicycle derailleur 10 can be configured to be electrically connected to bicycle derailleur RD via cables EC1 or EC2 when power supply PS is directly installed to bicycle derailleur 10 and RD. In addition, bicycle derailleur RD can be connected to at least one of operating devices 3 and 4 via a cable instead of wireless communication. Alternatively, 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.

[0134] In the first embodiment, the bicycle derailleur 10 includes a front derailleur. That is, the bicycle derailleur 10 may also refer to a front derailleur 10. However, the structure of the bicycle derailleur 10 may be applied to a rear derailleur as needed and / or as appropriate.

[0135] In this application, the following directional terms "forward," "backward," "forward," "rearward," "left," "right," "lateral," "upward," and "downward," and any other similar directional terms, refer to the direction determined by a user (e.g., a rider) sitting on the bicycle 2 (e.g., on the saddle or seat) facing the handlebars 2C standard. Therefore, these terms, when used to describe the bicycle derailleur 10 or other components, should be interpreted relative to the bicycle 2 equipped with the bicycle derailleur 10, as used in an upright riding position on a horizontal surface.

[0136] 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 4. The base member 12 is configured to be mounted to a tubular portion 4A of the bicycle frame 4. The base member 12 is configured to be mounted to a seatpost 4B of the bicycle frame 4. However, the base member 12 may be configured to be mounted to other parts of the bicycle frame 4 as needed and / or as appropriate.

[0137] As shown in Figure 3, the base member 12 includes a mounting hole 14, in which the base member 12 is mounted to a bicycle frame 4 using a mounting fastener 6, the mounting fastener 6 extending through the mounting hole 14. The mounting hole 14 has a central axis CA1. The mounting hole 14 extends along the central axis CA1. The mounting fastener 6 extends along the central axis CA1. In this embodiment, the mounting hole 14 includes a threaded hole 14A. The mounting fastener 6 includes an external thread 6A configured to engage with the threaded hole 14A of the mounting hole 14.

[0138] The base member 12 includes a mounting surface 16. A mounting hole 14 is provided on the mounting surface 16. The mounting surface 16 is configured to contact one of a bicycle frame 4 and a clamp 8, the clamp 8 being configured to couple the base member 12 to the bicycle frame 4 in an installed state where the base member 12 is mounted to the bicycle frame 4. In a first embodiment, the mounting surface 16 is configured to contact the clamp 8, the clamp 8 being configured to couple the base member 12 to the bicycle frame 4 in an installed state where the base member 12 is mounted to the bicycle frame 4. However, the mounting surface 16 may be configured to contact the bicycle frame 4 or a connector as needed and / or as appropriate in an installed state where the base member 12 is mounted to the bicycle frame 4.

[0139] As shown in Figure 4, the mounting surface 16 includes a curved surface 16A. The curved surface 16A is configured to contact either the bicycle frame 4 or the clamp 8 in a mounted state in which the base member 12 is mounted to the bicycle frame 4. A mounting hole 14 is provided on the curved surface 16A. However, instead of the curved surface 16A, or in addition to the curved surface 16A, the mounting surface 16 may include another surface.

[0140] The clamp 8 includes a bicycle frame 4 extending through one clamp opening 8A. The clamp opening 8A has a central axis 8B. The central axis CA1 of the mounting hole 14 is not parallel to the central axis 8B of the clamp 8.

[0141] As shown in Figure 5, the bicycle derailleur 10 includes a chain guide 18. The chain guide 18 is movable relative to the base member 12. The chain guide 18 is movable relative to the base member 12 to guide a chain C. The chain guide 18 can contact the chain C. The chain guide 18 can move relative to the base member 12 from a lower gear position P11 to a higher gear position P12 to move the chain C in an outward shifting direction D11. The chain guide 18 can move relative to the base member 12 from a higher gear position P12 to a lower gear position P11 to move the chain C in an inward shifting direction D12, which is the opposite direction to the outward shifting direction D11. The lower gear position P11 corresponds to a position of a smaller sprocket in a sprocket assembly. The higher gear position P12 corresponds to a position of a larger sprocket in a sprocket assembly. Chain guide 18 is configured to guide chain C from the smaller sprocket to the larger sprocket in the outward shifting direction D11. Chain guide 18 is configured to guide chain C from the larger sprocket to the smaller sprocket in the inward shifting direction D12.

[0142] The chain guide 18 includes an inner guide member 18A and an outer guide member 18B. The inner guide member 18A is configured to guide the chain C in the outward shifting direction D11. The outer guide member 18B is configured to guide the chain C in the inward shifting direction D12. The outer guide member 18B is spaced apart from the inner guide member 18A in the outward shifting direction D11. The outer guide member 18B is coupled to the inner guide member 18A.

[0143] As shown in Figure 6, the bicycle derailleur 10 includes a biasing member 19. The biasing member 19 is configured to bias the chain guide 18 from one of a lower gear P11 (see, for example, Figure 5) and a higher gear P12 (see, for example, Figure 5) toward the other of the lower gear P11 and higher gear P12. In a first embodiment, the biasing member 19 is configured to bias the chain guide 18 from the lower gear P11 toward the higher gear P12. However, the biasing member 19 may be configured to bias the chain guide 18 from the higher gear P12 toward the lower gear P11 as needed and / or as appropriate.

[0144] As shown in Figure 7, the bicycle derailleur 10 includes a linkage structure 20. The linkage structure 20 is pivotally coupled to a base member 12. The linkage structure 20 is configured to movably couple a chain guide 18 to the base member 12. The linkage structure 20 includes at least one link member LM and at least one link pin LP. The at least one link member LM is configured to movably couple the chain guide 18 to the base member 12. The at least one link pin LP is configured to pivotally couple at least one link member LM to the base member 12 about at least one link support pivot PA.

[0145] In a first embodiment, at least one link member LM includes a first link member 22 and a second link member 24. At least one link pivot PA includes a first pivot PA1, a second pivot PA2, a third pivot PA3, and a fourth pivot PA4. That is, the link assembly structure 20 includes a first link member 22 and a second link member 24. The first link member 22 is pivotally coupled to the base member 12 about the first pivot PA1. The second link member 24 is pivotally coupled to the base member 12 about the second pivot PA2. The first link member 22 is pivotally coupled to the chain guide 18 about the third pivot PA3. The second link member 24 is pivotally coupled to the chain guide 18 about the fourth pivot PA4. The second link member 24 is spaced apart from the first link member 22 along the outward shifting direction D11.

[0146] The first link member 22 may also refer to an inner link member 22. The second link member 24 may also refer to an outer link member 24. That is, the link assembly structure 20 includes an inner link member 22 and an outer link member 24. At least one link member LM includes an inner link member 22. At least one link member LM includes an outer link member 24. The inner link member 22 is pivotally coupled to the base member 12 about a first pivot PA1. The outer link member 24 is pivotally coupled to the base member 12 about a second pivot PA2. The inner link member 22 is pivotally coupled to the chain guide 18 about a third pivot PA3. The outer link member 24 is pivotally coupled to the chain guide 18 about a fourth pivot PA4. The outer link member 24 is spaced apart from the inner link member 22 along the outward shifting direction D11.

[0147] At least one link pin LP includes a first link pin 26, a second link pin 28, a third link pin 30, and a fourth link pin 32. That is, the link assembly structure 20 includes the first link pin 26, the second link pin 28, the third link pin 30, and the fourth link pin 32. The first link pin 26 is rotatably mounted to the base member 12 about a first pivot PA1. The first link pin 26 is configured to pivotally couple the first link member 22 to the base member 12 about the first pivot 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 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 PA3. The fourth link pin 32 is configured to pivotally couple the second link member 24 to the chain guide 18 around the fourth pivot PA4.

[0148] The chain guide 18 is pivotally coupled to the first link member 22 to move relative to the base member 12 in response to pivoting of the first link member 22 relative to the base member 12. The chain guide 18 is pivotally coupled to the second link member 24 to move relative to the base member 12 in response to pivoting of the second link member 24 relative to the base member 12.

[0149] The first link pin 26 may also refer to an inner link pin 26. The second link pin 28 may also refer to an outer link pin 28. The first pivot PA1 may also refer to an inner link pivot PA1. The second pivot PA2 may also refer to an outer link pivot PA2. That is, the link assembly structure 20 includes an inner link pin 26 and an outer link pin 28. At least one link pin LP includes an inner link pin 26. At least one link pin LP includes an outer link pin 28. At least one link pivot PA includes an inner link pivot PA1. At least one link pivot PA includes an outer link pivot PA2. The inner link pin 26 is configured to pivotally couple the inner link member 22 to the base member 12 around the inner link pivot PA1. The outer link pin 28 is configured to pivotally couple the outer link member 24 to the base member 12 around the outer link pivot PA2.

[0150] The first link member 22 and the inner link member 22 can also be referred to as a link member 22. The second link member 24 and the outer link member 24 can also be referred to as a link member 24. The first link pin 26 and the inner link pin 26 can also be referred to as a link pin 26. The second link pin 28 and the outer link pin 28 can also be referred to as a link pin 28. The first pivot PA1 and the inner link pivot PA1 can also be referred to as a link pivot PA1. The second pivot PA2 and the outer link pivot PA2 can also be referred to as a link pivot PA2. That is, the link assembly structure 20 includes the link member 22 and the link pin 26. The link pin 26 is configured to pivotally couple the link member 22 to the base member 12 around the link pivot PA1. Similarly, the link assembly structure 20 includes the link member 24 and the link pin 28. The connecting pin 28 is configured to pivotally couple the connecting rod member 24 to the base member 12 around the connecting rod pivot PA2.

[0151] As shown in Figure 2, at least three of the following pivots—the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4—are neither parallel to nor perpendicular to the central axis CA1 of the mounting hole 14. At least one of the first pivot PA1 and the second pivot PA2 is neither parallel to nor perpendicular to the central axis CA1 of the mounting hole 14. The second pivot PA2 and the fourth pivot PA4 are neither parallel to nor perpendicular to the central axis CA1 of the mounting hole 14.

[0152] In the first embodiment, the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 are neither parallel to nor perpendicular to the central axis CA1 of the mounting hole 14. The first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 are parallel to each other. However, at least one of the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 may be parallel to and / or perpendicular to the central axis CA1 of the mounting hole 14. At least one of the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 may not be parallel to the other of the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4. For example, the first pivot PA1 may not be parallel to the third pivot PA3. The second pivot PA2 may not be parallel to the fourth pivot PA4.

[0153] At least three of the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 are neither parallel to nor perpendicular to a reference plane 16B defined on the mounting surface 16. The reference plane 16B of the mounting surface 16 is perpendicular to the central axis CA1 of the mounting hole 14. At least one of the first pivot PA1 and the second pivot PA2 is neither parallel to nor perpendicular to the reference plane 16B defined on the mounting surface 16. The second pivot PA2 and the fourth pivot PA4 are neither parallel to nor perpendicular to the reference plane 16B defined on the mounting surface 16. At least three of the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 are neither parallel to nor perpendicular to a reference direction D2, which is perpendicular to the reference plane 16B defined on the mounting surface 16.

[0154] In the first embodiment, the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 are neither parallel to nor perpendicular to the reference plane 16B defined on the mounting surface 16. However, at least one of the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 may be parallel to and / or perpendicular to the reference plane 16B defined on the mounting surface 16.

[0155] At least one of the first pivot PA1 and the second pivot PA2 is neither parallel to nor perpendicular to a reference direction D2, which is perpendicular to a reference plane 16B defined on the mounting surface 16. The second pivot PA2 and the fourth pivot PA4 are neither parallel to nor perpendicular to the reference direction D2, which is perpendicular to the reference plane 16B defined on the mounting surface 16.

[0156] In the first embodiment, the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 are neither parallel to nor perpendicular to the reference direction D2, which is perpendicular to the reference plane 16B defined on the mounting surface 16. However, at least one of the first pivot PA1, the second pivot PA2, the third pivot PA3, and the fourth pivot PA4 may be parallel to and / or perpendicular to the reference direction D2, which is perpendicular to the reference plane 16B defined on the mounting surface 16, as needed and / or as circumstances allow.

[0157] As shown in Figure 4, the reference plane 16B of the mounting surface 16 is defined as the tangent plane of the curved surface 16A. The reference direction D2 is parallel to the central axis CA1 of the mounting hole 14. However, the reference direction D2 may not be parallel to the central axis CA1 of the mounting hole 14.

[0158] As shown in Figure 7, the bicycle derailleur 10 includes a motor unit 34. The motor unit 34 may also refer to a bicycle motor unit 34. The motor unit 34 is configured to move the chain guide 18 relative to the base member 12. The motor unit 34 is configured to move the chain guide 18 from a lower gear P11 to a higher gear P12 relative to the base member 12 in the outward shifting direction D11. The motor unit 34 is configured to move the chain guide 18 from a higher gear P12 to a lower gear P11 relative to the base member 12 in the inward shifting direction D12.

[0159] The bicycle motor unit 34 is configured to apply a rotational force to at least one of the chain guide 18 and the linkage structure 20, causing the chain guide 18 to move relative to the base member 12. In a first embodiment, the bicycle motor unit 34 is configured to apply a rotational force to the linkage structure 20, causing the chain guide 18 to move relative to the base member 12. The bicycle motor unit 34 is configured to apply a rotational force to the chain guide 18 through the linkage structure 20, causing the chain guide 18 to move relative to the base member 12. However, the bicycle motor unit 34 may be configured to apply a rotational force to the chain guide 18 or both the chain guide 18 and the linkage structure 20 as needed and / or as appropriate.

[0160] As shown in Figure 8, the bicycle motor unit 34 includes a motor 35 and a bicycle gear structure 36. The bicycle gear structure 36 may also refer to a gear structure 36. The motor 35 is configured to generate rotational force. Examples of the motor 35 include a DC motor and a stepper motor. However, the motor 35 may include other types of motors.

[0161] A bicycle gear structure 36 is configured to transmit rotational force. The 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 a chain guide 18 and a linkage structure 20. In a first embodiment, the plurality of gears 38 are configured to transmit rotational force to the linkage structure 20. The plurality of gears 38 are configured to transmit rotational force to the chain guide 18 via the linkage structure 20. However, the plurality of gears 38 may be configured to transmit rotational force directly to the chain guide 18 or both the chain guide 18 and the linkage structure 20.

[0162] In a first embodiment, the gear structure 36 includes a plurality of spur gears 40. The plurality of spur gears 40 are configured to transmit rotational force to at least one of the chain guide 18 and the linkage structure 20. The plurality of spur gears 40 are configured to transmit rotational force to the linkage structure 20. The plurality of spur gears 40 are configured to transmit rotational force to the chain guide 18 through the linkage structure 20. However, the plurality of spur gears 40 may be configured to transmit rotational force directly to the chain guide 18 or both the chain guide 18 and the linkage structure 20.

[0163] In a rotational force transmission path 42 provided from motor 35 to at least one of chain guide 18 (see, for example, FIG. 7) and linkage structure 20, motor unit 34 has no gears other than a plurality of spur gears 40. In the first embodiment, rotational force transmission path 42 is provided from motor 35 to linkage structure 20. However, rotational force transmission path 42 may be provided from motor 35 to chain guide 18 (see, for example, FIG. 7) or both chain guide 18 (see, for example, FIG. 7) and linkage structure 20. Motor unit 34 may, as needed and / or as appropriate, include a gear other than a plurality of spur gears 40 in the rotational force transmission path 42 provided from motor 35 to at least one of chain guide 18 (see, for example, FIG. 7) and linkage structure 20.

[0164] A plurality of gears 38 include gears G1 to G10. Each of gears G1 to G10 is a spur gear. Gear G1 is configured to mesh with gear G2. Gear G2 is configured to rotate together with gear G3. Gear G3 is configured to mesh with gear G4. Gear G4 is configured to rotate together with gear G5. Gear G5 is configured to mesh with gear G6. Gear G6 is configured to rotate together with gear G7. Gear G7 is configured to mesh with gear G8. Gear G8 is configured to rotate together with gear G9. Gear G9 is configured to mesh with gear G10. Gear G10 is configured to rotate together with the first connecting rod pin 26.

[0165] Motor 35 includes an output shaft 35A. Motor 35 is configured to rotate the output shaft 35A. Gear G1 may also refer to an input gear G1. Gear G10 may also refer to an output gear G10. That is, a plurality of spur gears 40 include an input gear G1 and an output gear G10. Input gear G1 is fixed to output shaft 35A. Output gear G10 is coupled to at least one of chain guide 18 (see, for example, FIG. 7) and linkage assembly 20. In a first embodiment, output gear G10 is coupled to linkage assembly 20 and is coupled to chain guide 18 through linkage assembly 20. However, output gear G10 may be directly coupled to chain guide 18 or both chain guide 18 and linkage assembly 20. Output gear G10 includes a sector gear G11. However, output gear G10 may include other types of gears as needed and / or as appropriate.

[0166] The gear structure 36 has a reduction ratio equal to or less than 1400. The reduction ratio is defined from the input gear G1 to the output gear G10. In the first embodiment, the reduction ratio of the gear structure 36 is approximately 832. However, the reduction ratio of the gear structure 36 may be higher than 1400 as needed and / or as circumstances allow.

[0167] Motor unit 34 is configured to apply a rotational force to at least one link pin LP to rotate at least one link pin LP and to pivot at least one link member LM about at least one link support pivot PA relative to base member 12. Motor unit 34 is configured to apply a rotational force to the first link pin 26 to rotate the first link pin 26 about the first support pivot PA1 relative to base member 12.

[0168] Motor unit 34 includes an output structure 44. Output structure 44 is coupled to at least one link pin LP to be rotatable about at least one link pivot PA relative to base member 12. Output structure 44 is coupled to a first link pin 26 to be rotatable about a first pivot PA1 relative to base member 12. Output structure 44 is directly or indirectly coupled to the first link pin 26 to be rotatable about the first pivot PA1 relative to base member 12. In a first embodiment, output structure 44 is directly coupled to the first link pin 26 to be rotatable about the first pivot PA1 relative to base member 12. However, output structure 44 may be indirectly coupled to the first link pin 26 as needed and / or as appropriate to be rotatable about the first pivot PA1 relative to base member 12.

[0169] As shown in Figure 9, the connecting pin 26 of the bicycle derailleur 10 includes a pin body 46 and a tool engagement profile 48. The pin body 46 includes a first end portion 46A, a second end portion 46B, and an intermediate portion 46C. That is, the first connecting pin 26 includes a first end portion 46A and a second end portion 46B. The intermediate portion 46C extends between the first end portion 46A and the second end portion 46B along a longitudinal direction D3 relative to a longitudinal axis LA1 of the connecting pin 26. A first pivot PA1 and a longitudinal axis LA1 extend along the longitudinal direction D3. The first pivot PA1 and the longitudinal axis LA1 are parallel to the longitudinal direction D3. The longitudinal axis LA1 of the connecting pin 26 coincides with the first pivot PA1. However, the longitudinal axis LA1 of the connecting pin 26 may be offset from the first pivot PA1 as needed and / or as required. The first pivot PA1 and the longitudinal axis LA1 may not be parallel to the longitudinal direction D3 as needed and / or as required.

[0170] The first end portion 46A has a first outer diameter DM11. The second end portion 46B has a second outer diameter DM12. In the first embodiment, the first outer diameter DM11 is larger than the second outer diameter DM12. However, the first outer diameter DM11 may be equal to or smaller than the second outer diameter DM12 as needed and / or as circumstances allow.

[0171] The tool engagement profile 48 is configured to engage with a tool for rotating the linkage pin 26. The tool engagement profile 48 is provided to at least one of a first end portion 46A, a second end portion 46B, and an intermediate portion 46C. An example of the tool includes a hex wrench. The tool engagement profile 48 allows a user to use a tool such as a hex wrench to change the rotational position of the first linkage pin 26 about a first pivot PA1 relative to one of the base member 12 and / or the output structure 44.

[0172] In the first embodiment, the tool engagement profile 48 is provided at the first end portion 46A. However, instead of the first end portion 46A or other than the first end portion 46A, the tool engagement profile 48 may be provided to at least one of the second end portion 46B and the intermediate portion 46C as needed and / or as appropriate.

[0173] As shown in Figure 10, when viewed along the longitudinal axis LA1, the tool engagement profile 48 has a shape other than a perfect circle. The tool engagement profile 48 has a polygonal shape. The tool engagement profile 48 has a hexagonal shape. The tool engagement profile 48 includes a tool engagement hole 50. The tool engagement hole 50 includes a hexagonal hole. That is, when viewed along the longitudinal axis LA1, the tool engagement profile 48 includes one of the tool engagement inner profiles having a shape other than a perfect circle. However, instead of the tool engagement inner profile or anything other than the tool engagement inner profile, the tool engagement profile 48 may, as needed or as appropriate, include a tool engagement outer profile. When viewed along the longitudinal axis LA1, the tool engagement outer profile may, as needed and / or as appropriate, have a shape other than a perfect circle. The tool engagement outer profile may, as needed and / or as appropriate, have a polygonal shape such as a hexagonal shape. In addition, the tool engagement profile 48 (tool engagement inner and / or outer profile) may have a shape other than a polygonal shape, such as an ellipse, a groove and a serrated shape, as needed and / or as appropriate.

[0174] The tool engagement profile 48 includes at least one flat inner surface 52. The tool engagement profile 48 includes six flat inner surfaces 52 forming a hexagonal shape. The flat inner surfaces 52 define the tool engagement hole 50. However, instead of at least one flat inner surface 52 or other than at least one flat inner surface 52, the tool engagement profile 48 may include other surfaces such as a curved surface as needed and / or as appropriate.

[0175] As shown in Figure 9, the first link member 22 is coupled to the first link pin 26 to pivot about the first pivot PA1 relative to the base member 12. The first link member 22 is directly coupled to the first link pin 26 to pivot about the first pivot PA1 relative to the base member 12. However, the first link member 22 may be indirectly coupled to the first link pin 26 as needed and / or as appropriate to pivot about the first pivot PA1 relative to the base member 12.

[0176] At least one of the first link pin 26 and the output structure 44 includes a first coupling member 53. The first link member 22 includes a second coupling member 54. The first coupling member 53 engages with the second coupling member 54 to transmit rotational force from at least one of the first link pin 26 and the output structure 44 to the first link member 22. The first coupling member 53 engages with the second coupling member 54 to limit relative rotation between the inner link member 22 and one of the inner link pin 26 and the output structure 44.

[0177] In a first embodiment, the first link pin 26 includes a first coupling member 53. The first coupling member 53 engages with a second coupling member 54 to transmit rotational force from the first link pin 26 to the first link member 22. However, the output structure 44, or both the first link pin 26 and the output structure 44, may include the first coupling member 53 as needed and / or as appropriate. The first coupling member 53 may engage with the second coupling member 54 to transmit rotational force from the output structure 44, or both the first link pin 26 and the output structure 44, to the first link member 22.

[0178] As shown in Figure 11, when viewed along the first pivot PA1, the first coupling member 53 has a first profile 56 other than a perfect circle. When viewed along the first pivot PA1, the second coupling member 54 has a second profile 58 other than a perfect circle. The first profile 56 may also refer to a torque transmission profile 56. That is, the connecting pin 26 of the bicycle derailleur 10 includes the torque transmission profile 56. The torque transmission profile 56 is configured to transmit the rotational force of the connecting pin 26 to the connecting rod member 22 of the bicycle derailleur 10. The torque transmission profile 56 is configured to restrict relative rotation between the connecting pin 26 and the connecting rod member 22 about one of the first pivots PA1.

[0179] In the first embodiment, the first profile 56 of the first coupling member 53 has a polygonal shape. The second profile 58 of the second coupling member 54 has a polygonal shape. The torque transmission profile 56 has a polygonal shape. The first profile 56 has a hexagonal shape. The second profile 58 has a hexagonal shape. The first profile 56 and the second profile 58 are configured to transmit rotational force from at least one of the first connecting pin 26 and the output structure 44 to the first connecting member 22. The first profile 56 and the second profile 58 may have shapes other than a polygonal shape, such as an ellipse, a groove, and a serrated shape, as needed and / or as appropriate.

[0180] The first coupling member 53 includes at least one first flat surface 60. The torque transmission profile 56 includes at least one first flat surface 60. The second coupling member 54 includes at least one second flat surface 62. In one of the engagement states of the first coupling member 53 and the second coupling member 54, at least one first flat surface 60 may contact at least one second flat surface 62 to transmit rotational force from at least one of the first connecting rod pin 26 and the output structure 44 to the first connecting rod member 22. At least one first flat surface 60 may contact at least one second flat surface 62 to restrict relative rotation between the first connecting rod member 22 and at least one of the first connecting rod pin 26 and the output structure 44 about one of the first pivots PA1.

[0181] In the first embodiment, when the first coupling member 53 and the second coupling member 54 are engaged, at least one first flat surface 60 may contact at least one second flat surface 62 to transmit rotational force from the first connecting pin 26 to the first connecting member 22. However, the at least one first flat surface 60 may be configured to contact at least one second flat surface 62 when the first coupling member 53 and the second coupling member 54 are engaged to transmit rotational force from the output structure 44 or both the first connecting pin 26 and the output structure 44 to the first connecting member 22.

[0182] The first coupling member 53 includes six first flat surfaces 60 forming a hexagonal shape. The second coupling member 54 includes six second flat surfaces 62 forming a hexagonal shape. The first flat surfaces 60 are configured to face and contact the second flat surfaces 62. The first flat surfaces 60 face away from the longitudinal axis LA1. The second flat surfaces 62 face the longitudinal axis LA1. The second coupling member 54 includes a coupling hole 64 having a second profile 58. The coupling hole 64 is defined by the second flat surfaces 62. The first coupling member 53 is provided in the coupling hole 64. However, the second coupling member 54 may include structures other than a hole as needed and / or as appropriate.

[0183] As shown in Figure 9, a torque transmission profile 56 is provided to at least one of the first end portion 46A, the second end portion 46B, and the intermediate portion 46C. In a first embodiment, the torque transmission profile 56 is provided to the intermediate portion 46C and is located between the first end portion 46A and the second end portion 46B. The torque transmission profile 56 is closer to the first end portion 46A than to the second end portion 46B. However, instead of the intermediate portion 46C or other than the intermediate portion 46C, the torque transmission profile 56 may be provided to at least one of the first end portion 46A and the second end portion 46B as needed and / or as appropriate.

[0184] The torque transmission profile 56 is provided along the longitudinal direction D3 at a location different from that of the tool engagement profile 48. The torque transmission profile 56 is offset from the tool engagement profile 48 along the longitudinal direction D3. However, the torque transmission profile 56 may be provided along the longitudinal direction D3 at a location identical to that of the tool engagement profile 48, as needed and / or as appropriate. In this modified example, the torque transmission profile 56 may be provided radially outward from the tool engagement profile 48 relative to the longitudinal axis LA1.

[0185] The first link member 22 includes a first link arm 22A, a first additional link arm 22B, and an intermediate plate 22C. The first link arm 22A extends from the intermediate plate 22C. A second link arm extends from the intermediate plate 22C. The first additional link arm 22B is spaced apart from the first link arm 22A along an axial direction D4 relative to the first pivot PA1. The first link arm 22A includes a second coupling member 54. The first additional link arm 22B includes an additional coupling hole 65. A first link pin 26 extends through the coupling hole 64 and the additional coupling hole 65. When viewed along the first pivot PA1, the additional coupling hole 65 has a profile containing a perfect circle. However, the additional coupling hole 65 may have a profile other than a perfect circle, depending on need and / or circumstances.

[0186] As shown in Figure 9, the output structure 44 includes a meshing body 66 and a gear portion 68. The meshing body 66 includes a first engagement hole 70. The gear portion 68 is provided on the meshing body 66. The gear portion 68 extends radially outward from the meshing body 66. The gear portion 68 includes an output gear G10. Therefore, the output gear G10 is coupled to the inner connecting rod pin 26 so that it can pivot together with the inner connecting rod pin 26 about the inner connecting rod pivot PA1 relative to the base member 12. The first connecting rod pin 26 includes a first engagement member 72. The first engagement member 72 is provided in the first engagement hole 70 to transmit rotational force from the output structure 44 to the first connecting rod pin 26. The first engagement member 72 is provided in the first engagement hole 70 to limit a relative rotation between the first connecting rod pin 26 and the output structure 44.

[0187] As shown in Figure 12, when viewed along the first pivot PA1, the first engaging member 72 has an outer contour 76 other than a perfect circle. When viewed along the first pivot PA1, the first engaging hole 70 has an inner contour 78 other than a perfect circle. In the first embodiment, the outer contour 76 of the first engaging member 72 has a polygonal shape. The inner contour 78 of the first engaging hole 70 has a polygonal shape. The outer contour 76 has a hexagonal shape. The inner contour 78 has a hexagonal shape. The outer contour 76 and the inner contour 78 are configured to transmit rotational force from the output structure 44 to the first connecting pin 26. However, the outer contour 76 and the inner contour 78 may have shapes other than a polygonal shape, such as an ellipse, a groove, and a serrated shape, as needed and / or as appropriate.

[0188] The first engaging member 72 includes at least one outer flat surface 80. The first engaging bore 70 includes at least one inner flat surface 82. In one of the states in which the first engaging member 72 is provided in the first engaging bore 70, at least one outer flat surface 80 may contact at least one inner flat surface 82 to transmit rotational force from the output gear G10 (see, for example, FIG. 9) to the first connecting rod pin 26. In the state in which the first engaging member 72 is provided in the first engaging bore 70, at least one outer flat surface 80 may contact at least one inner flat surface 82 to limit relative rotation between the output gear G10 (see, for example, FIG. 9) and the first connecting rod pin 26 about one of the first pivots PA1.

[0189] In a first embodiment, the first engaging member 72 includes six outer flat surfaces 80 forming a hexagonal shape. The first engaging hole 70 includes six inner flat surfaces 82 forming a hexagonal shape. The outer flat surfaces 80 are configured to face and contact the inner flat surfaces 82. The outer flat surfaces 80 face away from the longitudinal axis LA1. The inner flat surfaces 82 face the longitudinal axis LA1. The first engaging hole 70 is defined by a second flat surface 62. However, the first engaging member 72 may, as needed and / or as appropriate, include structures other than at least one outer flat surface 80. The first engaging hole 70 may, as needed and / or as appropriate, include structures other than at least one inner flat surface 82.

[0190] In a first embodiment, the first engaging member 72 engages frictionally with the first engaging hole 70. The first engaging member 72 is press-fitted into the first engaging hole 70. However, the engagement structure between the first engaging member 72 and the first engaging hole 70 is not limited to frictional engagement such as a press-fit. The engagement structure between the first engaging member 72 and the first engaging hole 70 may include other structures such as a bonding structure (e.g., an adhesive). Furthermore, the shapes of the first engaging hole 70 and the first engaging member 72 are not limited to a polygonal shape. At least one of the first engaging hole 70 and the first engaging member 72 may have another profile such as a circle, a groove, or a serrated shape.

[0191] In the first embodiment, the first engaging member 72 and the first coupling member 53 are adjacent to each other along an axial direction D4 relative to the first pivot PA1. The first engaging member 72 and the first coupling member 53 are integrally provided as a single-piece component. However, the first engaging member 72 may be a separate component from the first coupling member 53. The first engaging member 72 may be spaced apart from the first coupling member 53 along the axial direction D4 as needed and / or as appropriate.

[0192] As shown in Figure 9, the engaging body 66 includes a tubular component 84 and a sleeve 86, the sleeve 86 being a component separate from the tubular component 84. The tubular component 84 is a component separate from the connecting rod pin 26 and the sleeve 86. The sleeve 86 includes a first engaging hole 70 and a second engaging component 88. The tubular component 84 includes a second engaging hole 90. The second engaging component 88 is provided in the second engaging hole 90 to transmit rotational force from the tubular component 84 to the sleeve 86. The second engaging component 88 is provided in the second engaging hole 90 to restrict relative rotation between the tubular component 84 and the sleeve 86 about one of the first pivots PA1.

[0193] As seen in Figure 13, when viewed along the first pivot PA1, the second engaging member 88 has an additional outer contour 92 that at least partially includes a perfect circle. When viewed along the first pivot PA1, the second engaging hole 90 has an additional inner contour 93 that at least partially includes a perfect circle.

[0194] In the first embodiment, the second engaging member 88 frictionally engages with the second engaging hole 90. The second engaging member 88 is press-fitted into the second engaging hole 90. However, the engagement structure between the second engaging member 88 and the second engaging hole 90 is not limited to frictional engagement such as a press-fit. The engagement structure between the second engaging member 88 and the second engaging hole 90 may include other structures such as a bonding structure (e.g., an adhesive). Furthermore, the shapes of the second engaging member 88 and the second engaging hole 90 are not limited to a circular shape. At least one of the second engaging member 88 and the second engaging hole 90 may have other shapes such as an elliptical shape and a polygonal shape (e.g., hexagonal, grooved, serrated).

[0195] As shown in Figure 3, the first connecting pin 26 extends through the first engagement hole 70. The sleeve 86 extends through the second engagement hole 90. The first connecting pin 26 has a first length L1. The output structure 44 has a second length L2. The first length L1 is longer than the second length L2. A first end portion 46A is provided outside the first engagement hole 70. A second end portion 46B is provided outside the first engagement hole 70.

[0196] The base member 12 includes a first support hole 94 and a second support hole 95 spaced apart from the first support hole 94 along a first pivot PA1. A first end portion 46A is provided in the first support hole 94. A second end portion 46B is provided in the second support hole 95.

[0197] As shown in Figure 6, the base member 12 includes a base 96, a first support 98, and a second support 100. The first support 98 protrudes from the base 96 along a protrusion direction D5 perpendicular to the first pivot PA1. The second support 100 protrudes from the base 96 along the protrusion direction D5.

[0198] As shown in Figure 14, the first support body 98 includes a first support hole 94. The second support body 100 includes a second support hole 95. The second support body 100 is spaced apart from the first support body 98 along the axial direction D4.

[0199] The first support 98 includes a first support member 98A and a first bushing 98B. The first support member 98A includes a first hole 98C. The first bushing 98B includes a first support hole 94 and is provided in the first hole 98C. The second support 100 includes a second support member 100A and a second bushing 100B. The second support member 100A includes a second hole 100C. The second bushing 100B includes a second support hole 95 and is provided in the second hole 100C. However, the first bushing 98B may be integrally provided with the first support member 98A as a single-piece integral component. The second bushing 100B may be integrally provided with the second support member 100A as a single-piece integral component.

[0200] The first link arm 22A is provided along the axial direction D4 between the output structure 44 and the first support 98 of the base member 12. The first additional link arm 22B is provided along the axial direction D4 between the output structure 44 and the second support 100 of the base member 12. The output structure 44 is provided along the axial direction D4 between the first link arm 22A and the first additional link arm 22B. However, other positional relationships may be applied to the first link arm 22A, the first additional link arm 22B, the first support 98, the second support 100, and the output structure 44 as needed and / or as appropriate.

[0201] As shown in Figure 15, the bicycle gear structure 36 includes a torque diode TD. The torque diode TD includes a housing TD3, a first shaft TD1, and a second shaft TD2. The first shaft TD1 is rotatably mounted to the housing TD3 about a first rotation axis RA1. The second shaft TD2 is rotatably mounted to the housing TD3 about a second rotation axis RA2. The torque diode TD is configured to transmit rotation of the first shaft TD1 to the second shaft TD2. To protect the motor 35, the torque diode TD is configured not to transmit rotation of the second shaft TD2 to the first shaft TD1.

[0202] In the first embodiment, the first rotation axis RA1 is parallel to the second rotation axis RA2. The first rotation axis RA1 coincides with the second rotation axis RA2. However, the first rotation axis RA1 may be offset from the second rotation axis RA2. The first rotation axis RA1 may not be parallel to the second rotation axis RA2.

[0203] Gear G6 may also refer to a first transmission gear G6. Gear G5 may also refer to a first additional transmission gear G5. Gear G7 may also refer to a second transmission gear G7. That is, the bicycle gear structure 36 includes a first transmission gear G6 and a first additional transmission gear G5. The bicycle gear structure 36 further includes a second transmission gear G7.

[0204] The first drive gear G6 is attached to the first shaft TD1. The second drive gear G7 is attached to the second shaft TD2. The first additional drive gear G5 meshes with the first drive gear G6. The first additional drive gear G5 is rotatably mounted to the housing TD3 about a third rotation axis RA3 offset from one of the first rotation axis RA1 and the second rotation axis RA2.

[0205] The housing TD3 includes a gear support hole TD4. The bicycle gear structure 36 further includes a support pin 109. A first additional drive gear G5 is attached to the support pin 109. The support pin 109 is rotatably provided in the gear support hole TD4. The support pin 109 is configured to be rotatably provided in the gear support hole TD4 about a third rotation axis RA3. The support pin 109 includes a pin end 109A and a pair of pin ends 109B. The bicycle gear structure 36 includes support bushings 109C and 109D. Support bushing 109C includes a hole 109E. Support bushing 109D includes a hole 109F. Support bushing 109C is provided in the gear support hole TD4. The pin end 109A of the support pin 109 is rotatably provided in the hole 109E of the support bushing 109C. The opposing pin end 109B of the support pin 109 is rotatably provided in the hole 109F of the support bushing 109D. However, at least one of the support bushings 109C and 109D can be omitted from the bicycle gear structure 36.

[0206] The housing TD3 includes a housing body TD31 and a gear support member TD32. The gear support member TD32 extends radially outward from the housing body TD31 relative to the first rotation axis RA1. The gear support member TD32 includes a gear support hole TD4. The torque diode TD includes an internal structure configured to transmit rotation of the first shaft TD1 to the second shaft TD2, but not to transmit rotation of the second shaft TD2 to the first shaft TD1. The housing body TD31 is configured to accommodate the internal structure of the torque diode TD. The internal structure of the torque diode TD is known in the mechanical field. Therefore, for the sake of simplicity, it will not be described in detail.

[0207] The housing TD3 includes a fixing member TD33 configured to be secured to another component. The fixing member TD33 extends radially outward from the housing body TD31 relative to a first rotation axis RA1. The fixing member TD33 includes a fixing hole TD34.

[0208] Gear G4 may also refer to a third transmission gear G4. That is, the plurality of gears 38 includes a third transmission gear G4. The third transmission gear G4 is attached to the support pin 109. The third transmission gear G4 includes an attachment hole G41. One engaging portion G56 of the support pin 109 is pressed into the attachment hole G41.

[0209] The outer diameter DM26 of one of the first transmission gears G6 is greater than the outer diameter DM25 of one of the first additional transmission gears G5. The outer diameter DM26 of the first transmission gear G6 is greater than the outer diameter DM27 of one of the second transmission gears G7. The outer diameter DM26 of the first transmission gear G6 is greater than the outer diameter DM24 of one of the third transmission gears G4. However, the outer diameter of the first transmission gear G6 may be equal to or less than at least one of the outer diameters DM25 of the first additional transmission gear G5, DM27 of the second transmission gear G7, and DM24 of the third transmission gear G4.

[0210] As shown in Figure 16, the motor unit 34 includes a housing 110. The motor unit 34 includes a cover 111 configured to at least partially cover one of the output structures 44. The motor 35, gear structure 36, and cover 111 are provided in the housing 110. The housing 110 includes a first housing 112, a second housing 114, and a third housing 115. The first housing 112 includes a receiving space 112A. The motor 35 and gear structure 36 are provided in the receiving space 112A. The second housing 114 is attached to the first housing 112 to cover one end opening of the receiving space 112A. The third housing 115 is attached to the first housing 112 to hold the second housing 114 between the first housing 112 and the third housing 115. The first housing 112 includes a first housing support member 112B. The second housing 114 includes a second housing support member 114B.

[0211] As shown in Figure 14, the cover 111 includes a cover opening 111A. The first housing support member 112B includes a first through hole 112C. The second housing support member 114B includes a second through hole 114C. The first connecting pin 26 extends through the cover opening 111A, the first through hole 112C, and the second through hole 114C. The sleeve 86 of the output structure 44 extends through the cover opening 111A, the first through hole 112C, and the second through hole 114C. The cover 111, the first housing 112, and the second housing 114 are supported relative to the base member 12 by the first connecting pin 26.

[0212] The base member 12 has at least one first link pin receiving opening R1. The motor unit 34 has at least one second link pin receiving opening R2. At least one link member LM has at least one third link pin receiving opening R3. One of the at least one link pin LP is configured to extend through at least one first link pin receiving opening R1, at least one second link pin receiving opening R2 and at least one third link pin receiving opening R3.

[0213] At least one first connecting rod pin receiving opening R1 of the base member 12 includes at least one first inner connecting rod pin receiving opening R11. The at least one first inner connecting rod pin receiving opening R11 includes a first support hole 94 and a second support hole 95. The first support hole 94 may also refer to a first inner connecting rod pin receiving opening 94. The second support hole 95 may also refer to a first inner connecting rod pin receiving opening 95. That is, at least one first inner connecting rod pin receiving opening R11 includes a pair of first inner connecting rod pin receiving openings 94 and 95. However, the total number of at least one first inner connecting rod pin receiving opening R11 is not limited to 2.

[0214] At least one second connecting rod pin receiving opening R2 of motor unit 34 includes at least one second inner connecting rod pin receiving opening R21. The at least one second inner connecting rod pin receiving opening R21 includes a first engagement hole 70, a second engagement hole 90, a cover opening 111A, a first through hole 112C of the first housing 112, and a second through hole 114C of the second housing 114. The first engagement hole 70 may also refer to a second inner connecting rod pin receiving opening 70. The second engagement hole 90 may also refer to a second inner connecting rod pin receiving opening 90. The cover opening 111A may also refer to a second inner connecting rod pin receiving opening 111A. The first through hole 112C may also refer to a second inner connecting rod pin receiving opening 112C. The second through hole 114C may also refer to a second inner connecting rod pin receiving opening 114C. However, the total number of at least one second inner connecting rod pin receiving opening R21 is not limited to 5.

[0215] At least one third link pin receiving opening R3 of at least one link member LM includes at least one third inner link pin receiving opening R31 of the inner link member 22. The at least one third inner link pin receiving opening R31 includes a coupling hole 64 and an additional coupling hole 65. The coupling hole 64 may also refer to a third inner link pin receiving opening 64. The additional coupling hole 65 may also refer to a third inner link pin receiving opening 65. That is, at least one third inner link pin receiving opening R31 includes a pair of third inner link pin receiving openings 64 and 65. However, the total number of at least one third inner link pin receiving opening R31 is not limited to 2.

[0216] The inner link pin 26 is configured to extend through at least one first inner link pin receiving opening R11, at least one second inner link pin receiving opening R21, and at least one third inner link pin receiving opening R31. The inner link pin 26 is configured to extend through first inner link pin receiving openings 94 and 95, second inner link pin receiving openings 70, 90, 111A, 112C, and 114C, and third inner link pin receiving openings 64 and 65. The inner link pin 26 is provided in a first support hole 94, a second support hole 95, a first engagement hole 70, and a coupling hole 64 aligned along the inner link pivot PA1.

[0217] At least one first link pin receiving opening R1, at least one second link pin receiving opening R2, and at least one third link pin receiving opening R3 are provided coaxially with each other in an assembled state of the bicycle derailleur 10. At least one first inner link pin receiving opening R11, at least one second inner link pin receiving opening R21, and at least one third inner link pin receiving opening R31 are provided coaxially with each other on an inner coaxial A1 in an assembled state of the bicycle derailleur 10.

[0218] In the first embodiment, the first inner link pin receiving openings 94 and 95, the second inner link pin receiving openings 70, 90, 111A, 112C and 114C, and the third inner link pin receiving openings 64 and 65 are provided coaxially on an inner coaxial axis A1 in the assembled state of the bicycle derailleur 10. The inner coaxial axis A1 coincides with the inner link support pivot PA1. However, at least one of the first inner link pin receiving openings 94 and 95, the second inner link pin receiving openings 70, 90, 111A, 112C and 114C, and the third inner link pin receiving openings 64 and 65 can be offset from the other opening in the assembled state of the bicycle derailleur 10. The inner coaxial axis A1 can be offset from the inner link support pivot PA1.

[0219] At least one of a second inner link pin receiving opening R21 and at least one third inner link pin receiving opening R31 is disposed between the pair of first inner link pin receiving openings 94 and 95 along an axial direction D4 relative to the inner coaxial axis A1. At least one second inner link pin receiving opening R21 is disposed between the pair of third inner link pin receiving openings 64 and 65 along an axial direction D4 relative to the inner coaxial axis A1.

[0220] In the first embodiment, second inner link pin receiving openings 70, 90, 111A, 112C, and 114C are disposed between the pair of first inner link pin receiving openings along an axial direction D4 relative to the inner coaxial axis A1. Second inner link pin receiving openings 70, 90, 111A, 112C, and 114C are disposed between the pair of third inner link pin receiving openings 64 and 65 along an axial direction D4 relative to the inner coaxial axis A1. However, at least one of the second inner link pin receiving openings 70, 90, 111A, 112C, and 114C may be disposed along an axial direction D4 outside a space defined between the pair of first inner link pin receiving openings 94 and 95. At least one of the second inner link pin receiving openings 70, 90, 111A, 112C, and 114C may be disposed along an axial direction D4 outside a space defined between the pair of third inner link pin receiving openings 64 and 65.

[0221] As shown in Figure 14, at least one first link pin receiving opening R1 of the base member 12 includes at least one first outer link pin receiving opening R12. At least one second link pin receiving opening R2 of the motor unit 34 includes at least one second outer link pin receiving opening R22. At least one third link pin receiving opening R3 of at least one link member LM includes at least one third outer link pin receiving opening R32 of the outer link member 24. The outer link pin 28 is configured to extend through at least one first outer link pin receiving opening R12, at least one second outer link pin receiving opening R22, and at least one third outer link pin receiving opening R32.

[0222] In a first embodiment, at least one first outer link pin receiving opening R12 includes a pair of first outer link pin receiving openings 102 and 103. The first outer link pin receiving opening 102 includes a through hole. The first outer link pin receiving opening 103 includes a threaded hole. The base member 12 includes a third support 104 and a fourth support 105. The third support 104 protrudes from the base 96 along a projection direction D7 perpendicular to one of the second pivots PA2. The fourth support 105 protrudes from the base 96 along the projection direction D7. The third support 104 includes the first outer link pin receiving opening 102. The fourth support 105 includes the first outer link pin receiving opening 103.

[0223] At least one second outer link pin receiving opening R22 of motor unit 34 includes a second outer link pin receiving opening 106. Motor unit 34 includes a pin support member 107. Pin support member 107 includes the second outer link pin receiving opening 106. At least one third outer link pin receiving opening R32 of outer link member 24 includes a third outer link pin receiving opening 108. Outer link pin 28 is configured to extend through the pair of first outer link pin receiving openings 102 and 103, second outer link pin receiving opening 106, and third outer link pin receiving opening 108. Outer link pin 28 includes an external thread member 28A configured to thread-engage with the first outer link pin receiving opening 103.

[0224] At least one first outer link pin receiving opening R12, at least one second outer link pin receiving opening R22, and at least one third outer link pin receiving opening R32 are provided coaxially on an outer coaxial axis A2 in the assembled state of the bicycle derailleur 10. In a first embodiment, the pair of first outer link pin receiving openings 102 and 103, second outer link pin receiving opening 106, and third outer link pin receiving opening 108 are provided coaxially on an outer coaxial axis A2 in the assembled state of the bicycle derailleur 10. The outer coaxial axis A2 coincides with the outer link support pivot PA2. However, at least one of the pair of first outer link pin receiving openings 102 and 103, second outer link pin receiving opening 106, and third outer link pin receiving opening 108 may be offset from another opening in the assembled state of the bicycle derailleur 10. The outer coaxial axis A2 may be offset from the outer link support pivot PA2.

[0225] At least one of a second outer link pin receiving opening R22 and at least one third outer link pin receiving opening R32 is disposed between the pair of first outer link pin receiving openings along an axial direction D6 relative to the outer coaxial A2. The at least one second outer link pin receiving opening R22 is disposed outside a space defined between the pair of first outer link pin receiving openings 102 and 103 along an axial direction D6 relative to the outer coaxial A2.

[0226] In the first embodiment, the third outer connecting rod pin receiving opening 108 is disposed between the pair of first outer connecting rod pin receiving openings 102 and 103 along an axial direction D6 relative to the outer coaxial axis A2. The second outer connecting rod pin receiving opening 106 is disposed outside a space defined between the pair of first outer connecting rod pin receiving openings 102 and 103 along an axial direction D6 relative to the outer coaxial axis A2. However, the third outer connecting rod pin receiving opening 108 may be disposed outside a space defined between the pair of first outer connecting rod pin receiving openings 102 and 103 along an axial direction D6. The second outer connecting rod pin receiving opening 106 may be disposed between the pair of first outer connecting rod pin receiving openings 102 and 103 along an axial direction D6.

[0227] As shown in Figure 16, the motor unit 34 includes a gear support structure 116. The gear support structure 116 is configured to rotatably support a plurality of gears 38. The gear support structure 116 includes a first support member S1, a second support member S2, a third support member S3, and a fourth support member S4. The gear support structure 116 also includes a fifth support member S5. In a first embodiment, the second support member S2 is a component separate from the first support member S1. The second support member S2 is a component separate from the third support member S3, the fourth support member S4, and the fifth support member S5. The first support member S1 and the fourth support member S4 are integrally provided as a single-piece component. The third support member S3 is a component separate from the first support member S1, the second support member S2, the fourth support member S4, and the fifth support member S5. The fifth support member S5 is a component separate from the first support member S1, the second support member S2, the third support member S3, and the fourth support member S4. However, the first support member S1 may be integrally provided as a single-piece component with at least one of the second support member S2, the third support member S3, and the fifth support member S5. The first support member S1 may be a component separate from the fourth support member S4. The second support member S2 may be integrally provided as a single-piece component with at least one of the first support member S1, the third support member S3, the fourth support member S4, and the fifth support member S5. The third support member S3 may be integrally provided as a single-piece component with at least one of the first support member S1, the second support member S2, the fourth support member S4, and the fifth support member S5. The fifth support member S5 may be integrally provided as a single-piece component with at least one of the first support member S1, the second support member S2, the third support member S3, and the fourth support member S4.

[0228] The outer casing 110 includes at least one of a first support member S1, a second support member S2, a third support member S3, a fourth support member S4, and a fifth support member S5. In a first embodiment, the second outer casing 114 includes the third support member S3. However, instead of the third support member S3, or in addition to the third support member S3, the outer casing 110 may include at least one of the first support member S1, the second support member S2, the fourth support member S4, and the fifth support member S5.

[0229] The first support member S1 and the fourth support member S4 are secured to the motor 35 using a first fastener F1, such as a screw. The first support member S1 and the fourth support member S4 are secured to the housing 114 using second fasteners F21 and F22, such as screws. The outer housing TD3 of the torque diode TD is secured to the second housing 114 using a second fastener F22. The fifth support member S5 is secured to the second housing 114 using a second fastener F22 and a third fastener F3, such as a screw.

[0230] As shown in Figure 8, gear G2 can also refer to a first gear G2. Gear G3 can also refer to a first additional gear G3. Gear G4 and the third transmission gear G4 can also refer to a second gear G4. Gear G5 and the first additional transmission gear G5 can also refer to a second additional gear G5. Gear G6 and the first transmission gear G6 can also refer to a third gear G6. That is, the plurality of gears 38 includes the first gear G2. The plurality of gears 38 includes the first additional gear G3. The plurality of gears 38 includes the second gear G4 and the third gear G6. The plurality of gears 38 includes the second additional gear G5.

[0231] The first gear G2 is rotatable about a first gear shaft GA2 relative to the gear support structure 116. The second gear G4 is rotatable about a second gear shaft GA4 relative to the gear support structure 116. The third gear G6 is rotatable about a third gear shaft GA6 relative to the gear support structure 116. The first additional gear G3 is rotatable about a first gear shaft GA2 relative to the gear support structure 116. The second additional gear G5 is rotatable about a second gear shaft GA4 relative to the gear support structure 116.

[0232] The first shaft TD1 may also refer to a third pin TD1. The support pin 109 may also refer to a second pin 109. The plurality of gears 38 includes a first pin 122, a second pin 109, and a third pin TD1. The first pin 122 is configured to rotatably support the first gear G2 about the first gear shaft GA2. The second pin 109 is configured to rotatably support the second gear G4 about the second gear shaft GA4. The third pin TD1 is configured to rotatably support the third gear G6 about the third gear shaft GA6. The first pin 122 is configured to rotatably support the first gear G2 and the first additional gear G3 about the first gear shaft GA2. The second pin 109 is configured to rotatably support the second gear G4 and the second additional gear G5 about the second gear shaft GA4.

[0233] Gears G8 and G9 are rotatable about a fourth gear shaft GA8 relative to gear support structure 116. A plurality of gears 38 include a fourth pin 128. Gears G8 and G9 are attached to the fourth pin 128. The fourth pin 128 is configured to rotatably support gears G8 and G9 about the fourth gear shaft GA8.

[0234] As shown in Figure 17, the first pin 122 includes a first pin end 122A and a first opposing pin end 122B. The fourth pin 128 includes a fourth pin end 128A and a fourth opposing pin end 128B. The gear structure 36 includes support bushings 128C and 128D. Support bushing 128C is attached to the fourth pin end 128A. Support bushing 128D is attached to the fourth opposing pin end 128B.

[0235] As shown in Figure 18, pin end 109A of support pin 109 can also be referred to as a second pin end 109A. Opposite pin end 109B of support pin 109 can also be referred to as a second opposite pin end 109B. That is, the second pin 109 includes a second pin end 109A and a second opposite pin end 109B. The third pin TD1 includes a third pin end TD11 and a third opposite pin end TD12. The second shaft TD2 includes a pin end TD21 and a pair of opposite pin ends TD22. The gear structure 36 includes support bushings TD13 and TD23. Support bushing 109C is attached to the second pin end 109A. Support bushing 109D is attached to the second opposite pin end 109B. Support bushing TD13 is attached to the third opposite pin end TD12. Support bushing TD23 is attached to the opposite pin end TD22.

[0236] As shown in Figures 17 and 18, the first support member S1 is configured to support the first pin end 122A and the second pin end 109A. As shown in Figure 17, the fourth support member S4 is configured to support the first opposing pin end 122B. As shown in Figure 18, the second support member S2 is configured to support the second opposing pin end 109B and the third pin end TD11. The third support member S3 is configured to support the third opposing pin end TD12. The second support member S2 is configured to support the pin end TD21 of the second shaft member TD2. The fifth support member S5 is configured to support the opposing pin end TD22 of the second shaft member TD2.

[0237] The outer casing TD3 of the torque diode TD includes at least one of a first support member S1, a second support member S2, a third support member S3, and a fourth support member S4. In a first embodiment, the outer casing TD3 includes the second support member S2. The second support member S2 includes a gear support member TD32 (see, for example, FIG. 15). However, instead of the second support member S2, or in addition to the second support member S2, the outer casing TD3 may include at least one of the first support member S1, the third support member S3, and the fourth support member S4.

[0238] As shown in Figure 17, the first support member S1 includes a first support hole S11. The fourth support member S4 includes a fourth support hole S41. A first pin end 122A is rotatably provided in the first support hole S11 about the first gear shaft GA2. A first pair of pin ends 122B are rotatably provided in the fourth support hole S41 about the first gear shaft GA2.

[0239] As shown in Figure 18, the first support member S1 includes a first support hole S12. The second support member S2 includes a gear support hole TD4. The third support member S3 includes a third support hole S31. The fifth support member S5 includes a fifth support hole S51. A second pin end 109A is rotatably provided in the first support hole S12 about the second gear shaft GA4. A support bushing 109C is provided in the first support hole S12 to rotatably support the second pin end 109A. A second pair of pin ends 109B are rotatably provided in the gear support hole TD4 about the second gear shaft GA4. A support bushing 109D is provided in the gear support hole TD4 to rotatably support the second pair of pin ends 109B. A third pair of pin ends TD12 are rotatably provided in the third support hole S31. A support bushing TD13 is provided in the third support hole S31 to rotatably support the third pair of pin ends TD12. The opposing pin end TD22 of the second shaft member TD2 is rotatably provided in the fifth support hole S51. The support bushing TD23 is provided in the fifth support hole S51 to rotatably support the opposing pin end TD22 of the second shaft member TD2.

[0240] As shown in Figures 17 and 18, each of the first support member S1, the second support member S2, the third support member S3, and the fifth support member S5 is configured to rotatably support at least two gear support pins. Specifically, the first support member S1 is configured to rotatably support the first pin 122 and the second pin 109. The second support member S2 is configured to rotatably support the second pin 109 and the third pin TD1. The third support member S3 is configured to rotatably support the third pin TD1 and the fourth pin 128. The fifth support member S5 is configured to rotatably support the fourth pin 128 and the second shaft member TD2. However, at least one of the first to fifth support members S5 can be configured to rotatably support at least one pin. At least one of the first to fifth support members S5 can be omitted from the bicycle derailleur 10.

[0241] As shown in Figure 19, the motor unit 34 is configured to move the chain guide 18 relative to the base member 12 in response to a control signal transmitted from the self-operating device 3. The motor unit 34 is configured to be powered by a power supply PS provided separately from the bicycle derailleur 10. In the first embodiment, the motor unit 34 is configured to be electrically connected to the power supply PS via cable EC2. The motor unit 34 is configured to communicate with the operating device 4 using a PLC via the power supply PS, the bicycle derailleur RD, and cables EC1 and EC2. However, the power supply PS can be directly mounted to at least one of the bicycle derailleurs 10 and RD. The bicycle derailleurs RD and 10 can be configured to communicate wirelessly with the operating devices 3 and 4 when the power supply is directly mounted to the bicycle derailleurs RD and 10. In addition, the power supply PS can be configured to be shared between at least one of the bicycle derailleurs 10 and RD and devices other than the bicycle derailleurs 10 and RD (such as an auxiliary drive unit configured to apply auxiliary force to the drivetrain DT (see, for example, Figure 1)).

[0242] Motor unit 34 includes a motor driver 130, a communicator 132, a circuit board 134, and a system bus 135. The motor driver 130 and communicator 132 are electrically mounted on the circuit board 134. Motor 35, motor driver 130, and communicator 132 are electrically connected to each other via the circuit board 134 and system bus 135. Motor driver 130 is configured to control motor 35 in response to an upshift signal CS1 and a downshift signal CS2 transmitted from the self-operating device 3. Communicator 132 is configured to receive upshift signal CS1 and downshift signal CS2 from the self-operating device 3. Communicator 132 is configured to use a PLC to transmit information to other devices and / or receive information from other devices. Communicator 132 is configured to receive power from power supply PS.

[0243] As shown in Figure 16, circuit board 134 is attached to gear support structure 116. Circuit board 134 is secured to fifth support member S5 using fasteners F5 such as screws. Circuit board 134 is provided in housing 110.

[0244] As shown in Figure 20, the motor unit 34 includes a connector 136 configured to be electrically connected to a cable EC2. The connector for cable EC2 is releasably connected to connector 136. Connector 136 is attached to a first housing 112 of housing 110. The first housing 112 includes a connector bore 112D. Connector 136 is provided in connector bore 112D. Housing 110 includes a connector cover 137. Connector cover 137 is attached to the first housing 112 to cover connector bore 112D. Connector cover 137 includes a cable opening 137A. Cable EC2 extends through cable opening 137A. As shown in Figure 19, connector 136 is electrically connected to motor driver 130 and communicator 132 via circuit board 134 and system bus 135.

[0245] The term "releasable" as used herein refers to a configuration in which one element can be repeatedly detached from and attached to another element without material damage.

[0246] As shown in Figure 19, the bicycle derailleur 10 further includes a rotation sensor 138. The rotation sensor 138 is configured to sense the rotational position of one of the plurality of gears 38 in the gear structure 36. The rotation sensor 138 is also configured to sense the rotational position of one of the plurality of spur gears 40. The rotation sensor 138 is electrically mounted on a circuit board 134. The rotation sensor 138 is electrically connected to the motor driver 130 and the communicator 132 via the circuit board 134 and the system bus 135.

[0247] As shown in Figure 17, gear G8 can also refer to a sensor gear G8. That is, a plurality of gears 38 include sensor gears G8. A plurality of spur gears 40 include sensor gears G8. Rotation sensor 138 is configured to sense the rotational position of one of the sensor gears G8. Sensor gear G8 is provided on a rotational force transmission path 42 from motor 35 to at least one of chain guide 18 and linkage assembly.

[0248] In a first embodiment, the gear structure 36 includes a sensor target 140 coupled to one of the sensor gears G8. The sensor target 140 is rotatable relative to the housing 110 together with the sensor gear G8. The sensor target 140 is fixed to the fourth pair of pin ends 128B of the fourth pin 128. A rotation sensor 138 is configured to sense the rotational position of one of the sensor targets 140 to sense the rotational position of the sensor gear G8.

[0249] In a first embodiment, the rotation sensor 138 includes an optical encoder. The rotation sensor 138 is configured to emit light to a sensor target 140 and to detect light reflected from the sensor target 140. However, instead of an optical encoder, or in addition to an optical encoder, the rotation sensor 138 may include another sensor. The rotation sensor 138 may be omitted from the bicycle derailleur 10.

[0250] As seen in Figures 5 and 7, the base member 12, motor unit 34, and connecting rod members 22 and / or 24 are provided to at least partially overlap each other in a plurality of separated regions when viewed along the connecting rod pivots PA1 and / or PA2. In a first embodiment, the base member 12, motor unit 34, and inner connecting rod member 22 are provided to at least partially overlap each other in a first separated region SA1 when viewed along the inner connecting rod pivot PA1. The base member 12, motor unit 34, and inner connecting rod member 22 are provided to at least partially overlap each other in a second separated region SA2 when viewed along the outer connecting rod pivot PA2. The first separated region SA1 and the second separated region SA2 are spaced apart.

[0251] In the first embodiment, when viewed along the link pivot PA1, the first support 98 of the base member 12, the second support 100 of the base member 12, the first housing support member 112B of the first housing 112, the second housing support member 114B of the second housing 114, and the link member 22 are provided in a first separation region SA1 that partially overlap each other. The first housing 112 includes a pin support member 107. When viewed along the link pivot PA2, the third support 104 of the base member 12, the fourth support 105 of the base member 12, the pin support member 107 of the first housing 112, and the link member 24 are provided in a second separation region SA2 that partially overlap each other. However, the arrangement of the components is not limited to the above configuration.

[0252] As shown in Figure 21, when viewed along the first pivot PA1, a first reference line RL1 extends through the first pivot PA1 and the second pivot PA2. When viewed along the first pivot PA1, the first reference line RL1 extends through the first pivot PA1 and the second pivot PA2 to establish a boundary between a first region AR1 and a second region AR2. When viewed along the first pivot PA1, a second reference line RL2 extends through the second pivot PA2 and the fourth pivot PA4. When viewed along the first pivot PA1, a third reference line RL3 extends through the third pivot PA3 and the fourth pivot PA4. When viewed along the first pivot PA1, a fourth reference line RL4 extends through the first pivot PA1 and the third pivot PA3.

[0253] When viewed along the first pivot PA1, the chain guide 18 is provided in the first region AR1 relative to the first reference line RL1. When viewed along the first pivot PA1, the chain guide 18 is provided in the first region AR1 relative to the first reference line RL1 but not in the second region AR2.

[0254] When viewed along the first pivot PA1, at least one of the motor 35 and the gear structure 36 is at least partially provided in the first region AR1. In the first embodiment, when viewed along the first pivot PA1, the motor 35 is fully provided in the second region AR2. When viewed along the first pivot PA1, at least one of the plurality of gears 38 is at least partially provided in the first region AR1. When viewed along the first pivot PA1, at least one of the plurality of gears 38 is partially provided in the first region AR1. Specifically, when viewed along the first pivot PA1, the sensor gear G8 is at least partially provided in the first region AR1. When viewed along the first pivot PA1, the sensor gear G8 is partially provided in the first region AR1. When viewed along the first pivot PA1, the gear G9 is partially provided in the first region AR1. When the chain guide 18 is in one of the lower gears P11, when viewed along the first pivot PA1, the gear G10 is partially provided in the first region AR1. However, when viewed along the first pivot PA1, another gear of the plurality of gears 38 may be provided, at least partially, in the first region AR1, as needed and / or as appropriate. When viewed along the first pivot PA1, the motor 35 may be provided, at least partially or completely, in the first region AR1, as needed and / or as appropriate. When viewed along the first pivot PA1, the gear structure 36 may be provided, at least partially or completely, in either the first region AR1 or the second region AR2, as needed and / or as appropriate.

[0255] When viewed along the first pivot PA1, the gear structure 36 is at least partially provided in an arrangement area AR3 surrounded by a first reference line RL1, a second reference line RL2, a third reference line RL3, and a fourth reference line RL4. When viewed along the first pivot PA1, at least one of the motor 35 and the gear structure 36 is at least partially provided in the arrangement area AR3. In a lower gear position, when viewed along the first pivot PA1, the gear structure 36 is at least partially provided in the arrangement area AR3. In a higher gear position P12 where the chain guide 18 is in one of the higher gear positions, when viewed along the first pivot PA1, the gear structure 36 is at least partially provided in the arrangement area AR3. However, in a state where the chain guide 18 is only in one of the lower gear and higher gear positions, when viewed along the first pivot PA1, the gear structure 36 may be at least partially provided in the arrangement area AR3.

[0256] In the first embodiment, in both the lower and higher gear states, when viewed along the first pivot PA1, the gear structure 36 is partially provided in the configuration area AR3. In both the lower and higher gear states, when viewed along the first pivot PA1, the motor 35 is completely outside the configuration area AR3. In both the lower and higher gear states, when viewed along the first pivot PA1, at least one of the plurality of gears 38 is at least partially provided in the configuration area AR3. In both the lower and higher gear states, when viewed along the first pivot PA1, at least one of the plurality of gears 38 is partially provided in the configuration area AR3. Specifically, when viewed along the first pivot PA1, the sensor gear G8 is at least partially provided in the configuration area AR3. In both the lower and higher gear states, when viewed along the first pivot PA1, the sensor gear G8 is partially provided in the configuration area AR3. When viewed along the first pivot PA1, the gear G9 is partially provided in the configuration area AR3. In both the lower and higher gear states, when viewed along the first pivot PA1, gear G10 is partially provided in the configuration area AR3. However, in at least one of the lower and higher gear states, when viewed along the first pivot PA1, another gear of the plurality of gears 38 may be at least partially provided in the configuration area AR3. In at least one of the lower and higher gear states, when viewed along the first pivot PA1, motor 35 may be at least partially or completely provided in the configuration area AR3. In at least one of the lower and higher gear states, when viewed along the first pivot PA1, gear structure 36 may be completely provided outside the configuration area AR3.

[0257] As shown in Figure 21, at least one of the inner link member 22 and the outer link member 24 can contact one of the outer surfaces of the base member 12 and the housing 110 to define at least one of the lower gear P11 and the higher gear P12. The outer link member 24 can contact one of the outer surfaces of the base member 12 and the housing 110 to define the lower gear P11. One of the outer surfaces of the base member 12 and the housing 110 includes a lower gear positioning surface 150 that can contact the outer link member 24 to define the lower gear P11.

[0258] In a first embodiment, the outer link member 24 may contact the base member 12 to define a lower gear P11. In one state where the outer link member 24 is in contact with the lower gear positioning surface 150, the chain guide 18 is in the lower gear P11. The base member 12 includes the lower gear positioning surface 150. However, the outer link member 24 may be configured to contact an outer surface of the housing 110 to define the lower gear P11. The outer surface of the housing 110 may include the lower gear positioning surface 150.

[0259] When viewed along the first pivot PA1, a lower-positioning surface 150 is provided between the first reference line RL1 and the third reference line RL3. In both the lower and higher-positioning states, when viewed along the first pivot PA1, the lower-positioning surface 150 is provided closer to the first reference line RL1 than the third reference line RL3. In both the lower and higher-positioning states, when viewed along the first pivot PA1, the lower-positioning surface 150 is provided in the configuration area AR3. However, in at least one of the lower and higher-positioning states, when viewed along the first pivot PA1, the lower-positioning surface 150 is provided between the first reference line RL1 and the third reference line RL3. In at least one of the lower and higher-positioning states, when viewed along the first pivot PA1, the lower-positioning surface 150 may be provided closer to the first reference line RL1 than the third reference line RL3. In at least one of the lower and higher settings, when viewed along the first pivot PA1, the lower setting positioning surface 150 may be provided closer to the third reference line RL3 than the first reference line RL1. In at least one of the lower and higher settings, when viewed along the first pivot PA1, the lower setting positioning surface 150 may be provided at an intermediate position between the first reference line RL1 and the third reference line RL3.

[0260] The outer link member 24 can contact the chain guide 18 to define a higher gear position P12. The chain guide 18 includes a higher gear positioning member 18C configured to contact the outer link member 24 to define the higher gear position P12. In one state where the higher gear positioning member 18C is in contact with the outer link member 24, the chain guide 18 is in the higher gear position P12.

[0261] The higher-grade positioning member 18C is attached to at least one of the inner guide member 18A and the outer guide member 18B. The higher-grade positioning member 18C includes a screw that threadedly engages with at least one of the inner guide member 18A and the outer guide member 18B. However, the higher-grade position P12 may be defined by other structures.

[0262] As seen in Figure 22, for example, the inner link member 22 may contact one of the outer surfaces of the base member 12 and the housing 110 to define a higher gear position P12. One of the outer surfaces of the base member 12 and the housing 110 may include a higher gear positioning surface 152 that may contact the inner link member 22 to define the higher gear position P12. In a modified example, the higher gear positioning member 18C shown in Figure 21 is omitted from the chain guide 18. Instead, the inner link member 22 may contact the base member 12 to define the higher gear position P12. The base member 12 includes the higher gear positioning surface 152. However, the inner link member 22 may be configured to contact the outer surface of the housing 110 to define the higher gear position P12. The outer surface of the housing 110 may include the higher gear positioning surface 152.

[0263] In the modified example, when viewed along the first pivot PA1, the higher-grade positioning surface 152 is provided between the second reference line RL2 and the fourth reference line RL4. In both the lower and higher-grade states, when viewed along the first pivot PA1, the higher-grade positioning surface 152 is provided between the second reference line RL2 and the fourth reference line RL4. In at least one of the lower and higher-grade states, when viewed along the first pivot PA1, the higher-grade positioning surface 152 is provided outside a space provided between the first pivot PA1 and the third pivot PA3. In at least one of the lower and higher-grade states, when viewed along the first pivot PA1, the higher-grade positioning surface 152 is provided closer to the fourth reference line RL4 than the second reference line RL2. However, in at least one of the lower and higher-grade states, when viewed along the first pivot PA1, the higher-grade positioning surface 152 is provided closer to the second reference line RL2 than the fourth reference line RL4. In at least one of the lower and higher settings, when viewed along the first pivot PA1, the higher setting positioning surface 152 is provided between the second reference line RL2 and the fourth reference line RL4.

[0264] As shown in Figure 23, the inner guide member 18A includes an inner guide plate 160. The inner guide plate 160 includes an opening 162 having an inner periphery 164. The inner guide plate 160 includes openings 166, 168, and 170. At least one of the openings 166, 168, and 170 may be omitted from the inner guide plate 160.

[0265] As shown in Figure 24, the inner guide member 18A includes a surrounding wall 174. The surrounding wall 174 extends from the inner periphery 164 of the opening 162 along one of an outward shifting direction D11 and an inward shifting direction D12. In a first embodiment, the surrounding wall 174 extends from the inner periphery 164 of the opening 162 along the inward shifting direction D12. However, the surrounding wall 174 may be configured to extend from the inner periphery 164 of the opening 162 along the outward shifting direction D11 as needed and / or as appropriate.

[0266] The inner guide plate 160 has an inner guide surface 176 configured to contact the chain C when the inner guide plate 160 guides the chain C in the outward shifting direction D11. The surrounding wall 174 is at least partially inclined relative to the inner guide surface 176. In a first embodiment, the surrounding wall 174 is fully inclined relative to the inner guide surface 176. However, the surrounding wall 174 may be partially inclined relative to the inner guide surface 176 as needed and / or as appropriate.

[0267] An opening 162 of the inner guide plate 160 is at least partially provided in the inner guide surface 176. However, the opening 162 may be provided outside the inner guide surface 176 as needed and / or as appropriate.

[0268] The surrounding wall 174 includes an annular end 174A defining an additional opening 178. In the first embodiment, the additional opening 178 is smaller than the opening 162 of the inner guide plate 160. However, the additional opening 178 may have an area equal to or greater than the opening 162 of the inner guide plate 160, depending on need and / or circumstances.

[0269] In the first embodiment, the surrounding wall 174 and the inner guide plate 160 are provided integrally as a single-piece component. For example, the inner guide plate 160 and the surrounding wall 174 are formed by stamping from a sheet material. However, the surrounding wall 174 may be a component separate from the inner guide plate 160, depending on the need and / or the circumstances.

[0270] As shown in Figure 25, a surrounding wall 174 is provided to at least partially surround the opening 162. In a first embodiment, the surrounding wall 174 is provided to completely surround the opening 162. However, the surrounding wall 174 may be provided to partially surround the opening 162 as needed and / or as appropriate.

[0271] As shown in Figure 26, the surrounding wall 174 may be provided to the inner guide surface 176 within the inner guide plate 160 as needed and / or as required, and is configured to push the chain C in one of the outward shifting operations in which the chain C moves in the outward shifting direction D11. Second Embodiment

[0272] The following description of a bicycle derailleur 210 according to a second embodiment will refer to Figures 27 to 36. Except for the coupling structure of the linkage member 22, the bicycle derailleur 210 has the same structure and / or configuration as the bicycle derailleur 10. Therefore, elements having functions substantially the same as those in the first embodiment will have the same element symbols herein, and for the sake of brevity, will not be described in detail or illustrated further.

[0273] As shown in Figures 27 and 28, the bicycle derailleur 210 includes a base member 12. The bicycle derailleur 210 includes a chain guide 18. The bicycle derailleur 210 includes a linkage assembly structure 20. The bicycle derailleur 210 includes a motor unit 34.

[0274] As shown in Figure 29, the motor unit 34 is configured to apply a rotational force to the first link pin 26, causing the first link pin 26 to rotate relative to the base member 12 about the first pivot PA1. The first link member 22 is coupled to the first link pin 26 to pivot relative to the base member 12 about the first pivot PA1. The chain guide 18 is pivotally coupled to the first link member 22 to move relative to the base member 12 in response to pivoting movement of the first link member 22 relative to the base member 12.

[0275] As shown in Figure 30, the output structure 44 is coupled to the first link pin 26 to be rotatable about the first pivot PA1 relative to the base member 12. At least one of the first link pin 26 and the output structure 44 includes a first coupling member 252. The first link member 22 includes a second coupling member 254. The first coupling member 252 engages with the second coupling member 254 to transmit rotational force from at least one of the first link pin 26 and the output structure 44 to the first link member 22. The first coupling member 252 engages with the second coupling member 254 to limit relative rotation between the inner link member 22 and one of the inner link pin 26 and the output structure 44.

[0276] In the second embodiment, the output structure 44 includes a first coupling member 252. The first coupling member 252 engages with a second coupling member 254 to transmit rotational force from the output structure 44 to the first link member 22. However, the first link pin 26 or both the first link pin 26 and the output structure 44 may include the first coupling member 252 as needed and / or as required. The first coupling member 252 may engage with the second coupling member 254 to transmit rotational force from both the first link pin 26 or both the first link pin 26 and the output structure 44 to the first link member 22 as needed and / or as required.

[0277] As shown in Figure 31, when viewed along the first pivot PA1, the first coupling member 252 has a first profile 256 other than a perfect circle. When viewed along the first pivot PA1, the second coupling member 254 has a second profile 258 other than a perfect circle.

[0278] In the second embodiment, the first coupling member 252 includes at least one first flat surface 260. The at least one first flat surface 260 forms a first profile 256. The torque transmission profile 256 includes at least one first flat surface 260. The second coupling member 254 includes at least one second flat surface 262. The at least one second flat surface 262 forms a second profile 258. In one of the engagement states of the first coupling member 252 and the second coupling member 254, the at least one first flat surface 260 may contact the at least one second flat surface 262 to transmit rotational force from at least one of the first connecting rod pin 26 and the output structure 44 to the first connecting rod member 22. The at least one first flat surface 260 may contact the at least one second flat surface 262 to restrict relative rotation between the first connecting rod member 22 and at least one of the first connecting rod pin 26 and the output structure 44 about one of the first pivots PA1.

[0279] In the second embodiment, when the first coupling member 252 and the second coupling member 254 are engaged, at least one first flat surface 260 may contact at least one second flat surface 262 to transmit rotational force from the output structure 44 to the first link member 22. However, the at least one first flat surface 260 may be configured to contact at least one second flat surface 262 as needed and / or as appropriate when the first coupling member 252 and the second coupling member 254 are engaged to transmit rotational force from the first link pin 26 or both the first link pin 26 and the output structure 44 to the first link member 22.

[0280] The first coupling member 252 includes two first flat surfaces 260. One of the first flat surfaces 260 is provided on the back side of the other of the first flat surfaces 260 relative to the first pivot PA1. The second coupling member 254 includes two second flat surfaces 262. One of the second flat surfaces 262 is provided on the back side of the other of the second flat surfaces 262 relative to the first pivot PA1. The first flat surfaces 260 are configured to face and contact the second flat surfaces 262. The first flat surfaces 260 face away from the longitudinal axis LA1. The second flat surfaces 262 face the longitudinal axis LA1. The second flat surfaces 262 are spaced apart from each other.

[0281] As shown in Figure 32, the second coupling member 254 includes at least one coupling portion 254A. In a second embodiment, the second coupling member 254 includes two coupling portions 254A. Each coupling portion 254A includes a second flat surface 262. The coupling portions 254A are spaced apart from each other. The coupling portions 254A extend from the first link arm 22A along the axial direction D4 of the first pivot PA1.

[0282] As seen in Figure 30, the first link member 22 includes a coupling hole 264 provided on the first link arm 22A. The first link pin 26 includes an additional coupling member 265. As seen in Figure 33, the additional coupling member 265 is provided in the coupling hole 264. When viewed along the first pivot PA1, the coupling hole 264 has an inner contour that is a perfect circle. When viewed along the first pivot PA1, the additional coupling member 265 has an outer contour that is a perfect circle. However, when viewed along the first pivot PA1, the coupling hole 264 and the additional coupling member 265 may have a contour other than a perfect circle.

[0283] As shown in Figure 30, the meshing body 66 includes a first meshing hole 270. The sleeve 86 includes the first meshing hole 270 and a second meshing member 88. The first connecting rod pin 26 includes a first meshing member 272. The first meshing member 272 is provided in the first meshing hole 270 to transmit rotational force from the output structure 44 to the first connecting rod pin 26. The first meshing member 272 is provided in the first meshing hole 270 to limit a relative rotation between the first connecting rod pin 26 and the output structure 44.

[0284] As shown in Figure 31, when viewed along the first pivot PA1, the first engaging member 272 has an outer contour 276 other than a perfect circle. When viewed along the first pivot PA1, the first engaging hole 270 has an inner contour 278 other than a perfect circle. In the second embodiment, the outer contour 276 of the first engaging member 272 has a polygonal shape. The inner contour 278 of the first engaging hole 270 has a polygonal shape. The outer contour 276 has a substantially quadrilateral shape. The inner contour 278 has a substantially quadrilateral shape. The outer contour 276 and the inner contour 278 are configured such that the first connecting pin 26 rotates together with the output structure 44 about the first pivot PA1.

[0285] The first engaging member 272 includes at least one outer flat surface 280. The first engaging bore 270 includes at least one inner flat surface 282. In one of the states in which the first engaging member 272 is provided in the first engaging bore 270, at least one outer flat surface 280 may contact at least one inner flat surface 282 to transmit rotational force from the output gear G10 (see, for example, FIG. 30) to the first connecting pin 26. In one of the states in which the first engaging member 272 is provided in the first engaging bore 270, at least one outer flat surface 280 may contact at least one inner flat surface 282 to limit relative rotation between the output gear G10 (see, for example, FIG. 30) and the first connecting pin 26 about one of the first pivots PA1.

[0286] In a second embodiment, the first engaging member 272 includes four outer flat surfaces 280 forming a substantially quadrilateral shape. The first engaging hole 270 includes four inner flat surfaces 282 forming a substantially quadrilateral shape. The outer flat surfaces 280 are configured to face and contact the inner flat surfaces 282. The outer flat surfaces 280 face away from the longitudinal axis LA1. The inner flat surfaces 282 face the longitudinal axis LA1. The first engaging hole 270 is defined by a second flat surface 62. However, the first engaging member 272 may include structures other than at least one outer flat surface 280. The first engaging hole 270 may include structures other than at least one inner flat surface 282.

[0287] In the second embodiment, the first engaging member 272 engages frictionally with the first engaging hole 270. The first engaging member 272 is press-fitted into the first engaging hole 270. However, the engagement structure between the first engaging member 272 and the first engaging hole 270 is not limited to frictional engagement such as a press-fit. The engagement structure between the first engaging member 272 and the first engaging hole 270 may include other structures such as a bonding structure (e.g., an adhesive). Furthermore, the shapes of the first engaging hole 270 and the first engaging member 272 are not limited to a polygonal shape. At least one of the first engaging hole 270 and the first engaging member 272 may have another profile such as a circle, a groove, or a serrated shape.

[0288] As shown in Figure 34, the first connecting rod pin 26 extends through the first engagement hole 270. The sleeve 86 extends through the second engagement hole 90. A first end portion 46A is provided outside the first engagement hole 270. A second end portion 46B is provided outside the first engagement hole 270.

[0289] At least one second connecting rod pin receiving opening R2 of motor unit 34 includes at least one second inner connecting rod pin receiving opening R21. The at least one second inner connecting rod pin receiving opening R21 includes a first engagement hole 270, a second engagement hole 90, a cover opening 111A, a first through hole 112C of the first housing 112, and a second through hole 114C of the second housing 114. The first engagement hole 270 may also refer to a second inner connecting rod pin receiving opening 270. However, the total number of at least one second inner connecting rod pin receiving opening R21 is not limited to 5.

[0290] At least one third link pin receiving opening R3 of at least one link member LM includes at least one third inner link pin receiving opening R31 of the inner link member 22. The at least one third inner link pin receiving opening R31 includes a coupling hole 264 and an additional coupling hole 65. The coupling hole 264 may also refer to a third inner link pin receiving opening 264. That is, the at least one third inner link pin receiving opening R31 includes a pair of third inner link pin receiving openings 264 and 65. However, the total number of at least one third inner link pin receiving opening R31 is not limited to 2.

[0291] The inner link pin 26 is configured to extend through at least one first inner link pin receiving opening R11, at least one second inner link pin receiving opening R21, and at least one third inner link pin receiving opening R31. The inner link pin 26 is configured to extend through first inner link pin receiving openings 94 and 95, second inner link pin receiving openings 270, 90, 111A, 112C, and 114C, and third inner link pin receiving openings 264 and 65. The inner link pin 26 is provided in a first support hole 94, a second support hole 95, a first engagement hole 270, and a coupling hole 264 aligned along the inner link pivot PA1.

[0292] At least one first link pin receiving opening R1, at least one second link pin receiving opening R2, and at least one third link pin receiving opening R3 are provided coaxially with each other in one assembled state of the bicycle derailleur 210. At least one first inner link pin receiving opening R11, at least one second inner link pin receiving opening R21, and at least one third link pin receiving opening R31 are provided coaxially with each other on an inner coaxial A1 in the assembled state of the bicycle derailleur 210.

[0293] In the second embodiment, the first inner link pin receiving openings 94 and 95, the second inner link pin receiving openings 270, 90, 111A, 112C and 114C, and the third inner link pin receiving openings 264 and 65 are provided coaxially on an inner coaxial axis A1 in the assembled state of the bicycle derailleur 210. The inner coaxial axis A1 coincides with the inner link support pivot PA1. However, at least one of the first inner link pin receiving openings 94 and 95, the second inner link pin receiving openings 270, 90, 111A, 112C and 114C, and the third inner link pin receiving openings 264 and 65 may be offset from the other opening in the assembled state of the bicycle derailleur 210. The inner coaxial axis A1 may be offset from the inner link support pivot PA1.

[0294] At least one of a second inner link pin receiving opening R21 and at least one third inner link pin receiving opening R31 is disposed between the pair of first inner link pin receiving openings 94 and 95 along an axial direction D4 relative to the inner coaxial axis A1. At least one second inner link pin receiving opening R21 is disposed between the pair of third inner link pin receiving openings 264 and 65 along an axial direction D4 relative to the inner coaxial axis A1.

[0295] In the second embodiment, the second inner connecting rod pin receiving openings 270, 90, 111A, 112C, and 114C are disposed between the pair of first inner connecting rod pin receiving openings along an axial direction D4 relative to the inner coaxial axis A1. The second inner connecting rod pin receiving openings 270, 90, 111A, 112C, and 114C are disposed between the pair of third inner connecting rod pin receiving openings 264 and 65 along an axial direction D4. However, at least one of the second inner connecting rod pin receiving openings 270, 90, 111A, 112C, and 114C may be disposed along an axial direction D4 outside a space defined between the pair of first inner connecting rod pin receiving openings 94 and 95. At least one of the second inner connecting rod pin receiving openings 270, 90, 111A, 112C, and 114C may be disposed along an axial direction D4 outside a space defined between the pair of third inner connecting rod pin receiving openings 264 and 65.

[0296] As seen in Figure 28, the bicycle derailleur 210 further includes a retainer 290. The retainer 290 is configured to prevent the first link pin 26 from accidentally falling off the base member 12. The retainer 290 is configured to be releasably attached to the base member 12.

[0297] As shown in Figure 35, the first support member 98A of the base member 12 includes an insertion opening 12A and a recess 12B. The insertion opening 12A is connected to the inner peripheral surface of one of the first holes 98C of the first support member 98A. The retainer 290 is configured to be at least partially provided in the insertion opening 12A and the recess 12B.

[0298] The retainer 290 includes an attachment body 292, a pair of attachment arms 293, and a retainer body 294. The attachment arms 293 extend from the attachment body 292. The attachment arms 293 are configured to hold a component of the base member 12 to releasably couple the retainer 290 to the base member 12. In a second embodiment, the attachment arms 293 are configured such that a first bushing 98B of the base member 12 is held between the attachment arms 293.

[0299] The retainer body 294 extends from the attachment body 292. In the state where the retainer 290 is attached to one of the base members 12, the retainer body 294 is partially provided in the insertion opening 12A. In the state where the retainer 290 is attached to the base member 12, the retainer body 294 is at least partially provided in the first hole 98C of the first support member 98A.

[0300] The retainer 290 includes an engagement member 296 configured to engage with the base member 12. The engagement member 296 extends from the attachment 292. The engagement member 296 is configured to elastically deform.

[0301] As shown in Figure 36, the engaging member 296 is configured to engage with one of the inner peripheral surfaces of the first hole 98C to prevent the retainer 290 from accidentally falling off the base member 12. Therefore, in the state where the retainer 290 is attached to the base member 12, the retainer 290 prevents the first link pin 26 from accidentally falling off the first support hole 94 and the first hole 98C of the base member 12. However, the retainer 290 can be omitted from the bicycle derailleur 210 as needed and / or as appropriate. Furthermore, the retainer 290 can be applied to the bicycle derailleur 10 of the first embodiment. Modified Example

[0302] In the first and second embodiments, when viewed along the first pivot PA1, the second engaging member 88 of the sleeve 86 has an additional outer contour 92 that is a perfect circle. When viewed along the first pivot PA1, the second engaging hole 90 of the tubular member 84 has an additional inner contour 93 that is a perfect circle. However, as seen in FIG37, when viewed along the first pivot PA1, the second engaging member 88 may have an additional outer contour 392 in addition to a perfect circle. When viewed along the first pivot PA1, the second engaging hole 90 may have an additional inner contour 394 in addition to a perfect circle.

[0303] In the modified example, the additional outer contour 392 of the second engaging member 88 has a polygonal shape. The additional inner contour 394 of the second engaging hole 90 has a polygonal shape. The additional outer contour 392 of the second engaging member 88 has a hexagonal shape. The additional inner contour 394 of the second engaging hole 90 has a hexagonal shape. The second engaging member 88 includes at least one additional outer flat surface 380. The second engaging hole 90 includes at least one additional inner flat surface 382. The at least one additional outer flat surface 380 can contact the at least one additional inner flat surface 382 to transmit rotational force from the tubular member 84 to the sleeve 86. The second engaging member 88 includes six additional outer flat surfaces 380 forming a hexagonal shape. The second engaging hole 90 includes six additional inner flat surfaces 382 forming a hexagonal shape. However, at least one of the second engaging member 88 and the second engaging hole 90 may have a contour other than a circle and a hexagonal shape.

[0304] In the first and second embodiments, the communicator 132 is configured to communicate with other devices using a wired communication. However, the bicycle derailleur 10 may be configured to communicate with other devices, such as the operating device 3, using a wireless communication or both wired and wireless communication. The communicator 132 may be configured to communicate with other devices, such as the operating device 3, using a wireless communication or both wired and wireless communication. The communicator 132 may include a wireless communicator configured to wirelessly communicate with other devices, such as the operating device 3. In this modification, for example, when viewed along the first pivot PA1, the wireless communicator may be available in the configuration area AR3 and / or the second area AR2.

[0305] In the first and second embodiments, the bicycle derailleur 10 or 210 includes a motor unit 34. However, the motor unit 34 may be omitted from the bicycle derailleur 10 or 210. In this modification, the bicycle derailleur 10 or 210 may be actuated by a mechanical cable such as a Bowden cable.

[0306] In the first and second embodiments, the bicycle derailleur 10 or 210 is configured to be electrically connected to a power supply PS mounted to the bicycle frame 4. However, the power supply PS can be directly mounted to the bicycle derailleur 10. In this modification, the bicycle derailleur 10 or 210 includes a power attachment component for attaching a power supply PS.

[0307] The bicycle derailleur 10 or 210 may include an indicator such as a light-emitting diode (LED). In this modified example, the indicator is configured to indicate information related to the bicycle 2. The information related to the bicycle 2 includes the communication status of the bicycle derailleur 10 or 210, the remaining power of the power supply PS, and the gear position of the bicycle derailleur 10 or 210.

[0308] As seen in Figures 38 to 43, the chain guide 18 may have the shapes illustrated in the first and second embodiments. As seen in Figure 38, for example, the chain guide 18 of a bicycle derailleur 210 includes a first guide member 318A and a second guide member 318B. The first guide member 318A is an inner guide member. The second guide member 318B is an outer guide member. Therefore, the first guide member 318A may also refer to an inner guide member 318A. The second guide member 318B may also refer to an outer guide member 318B. However, the first guide member 318A may be an outer guide member. The second guide member 318B may be an inner guide member. The first guide member 318A has a structure substantially identical to the structure of the inner guide member 18A in the first and second embodiments. The second guide member 318B has a structure substantially identical to the structure of the outer guide member 18B in the first and second embodiments. In this modified example, the second guide member 318B is a separate component from the first guide member 318A. However, the second guide member 318B can be provided integrally with the first guide member 318A as a single-piece integral component.

[0309] As seen in Figure 39, the inner guide plate 160 can also refer to a first guide plate 160. Therefore, the first guide member 318A includes a first guide plate 160 configured to contact the chain C. The second guide member 318B includes a second guide plate 322 configured to contact the chain C and spaced apart from the first guide member 318A. The second guide plate 322 is spaced apart from the first guide plate 160 along a first direction D81. The first guide plate 160 and the second guide plate 322 define a chain guide space 324 in which the chain C is provided.

[0310] As shown in Figure 40, the second guide member 318B includes an extension member 326. The extension member 326 extends from the second guide plate 322 toward the first guide plate 160. The extension member 326 extends from the second guide plate 322 toward the first guide plate 160 along a first direction D81. The first guide member 318A includes a fixing member 328 extending from the first guide plate 160 toward the second guide plate 322. The fixing member 328 extends from the first guide plate 160 toward the second guide plate 322 along a first direction D81. The extension member 326 is configured to be fixed to the fixing member 328.

[0311] The extension member 326 includes a first extension member 330 and a second extension member 332. The first extension member 330 and the second extension member 332 are at least partially spaced apart. The first extension member 330 is at least partially spaced apart from the second extension member 332 along a second direction D82 that is different from the first direction D81. In this modified example, the first extension member 330 is partially spaced apart from the second extension member 332 along a second direction D82 that is perpendicular to the first direction D81. However, the second direction D82 may not be perpendicular to the first direction D81.

[0312] The first extension member 330 includes a fastening hole 330A. The chain guide 18 further includes a fastener 334A configured to secure the extension member 326 to one of the first guide members 318A. The fastener 334A extends through the fastening hole 330A. Similarly, the first extension member 330 includes a fastening hole 330B. The chain guide 18 further includes a fastener 334B configured to secure the extension member 326 to one of the first guide members 318A. The fastener 334B extends through the fastening hole 330B. The fastening holes 330A and 330B are spaced apart along a second direction D82. The total number of fastening holes 330A and 330B is not limited to 2. Furthermore, instead of fastening holes 330A and 330B, or in addition to fastening holes 330A and 330B, the second extension member 332 may include a fastening hole 330A. At least one of the fastening holes 330A and 330B may be omitted from the first extension member 330.

[0313] The retaining member 328 includes an additional fastening hole 328A. The additional fastening hole 328A corresponds to the fastening hole 330A. A fastener 334A extends through the additional fastening hole 328A. Similarly, the retaining member 328 includes an additional fastening hole 328B. The additional fastening hole 328B corresponds to the fastening hole 330B. A fastener 334B extends through the additional fastening hole 328B. The additional fastening holes 328A and 328B are spaced apart along a second direction D82. The total number of either additional fastening holes 328A or 328B is not limited to two. At least one of the additional fastening holes 328A and 328B may be omitted from the retaining member 328.

[0314] In this embodiment, each of fasteners 334A and 334B includes a screw. Each of fastening holes 330A and 330B includes a threaded hole. Each of additional fastening holes 328A and 328B includes a threaded hole. Fastener 334A is configured to engage threadedly in fastening hole 330A and additional fastening hole 328A. Fastener 334B is configured to engage threadedly in fastening hole 330B and additional fastening hole 328B.

[0315] The first guide member 318A includes an additional fixing member 336. The second guide member 318B includes an additional fixing member 338. The chain guide 18 includes an additional fastener 339. The additional fixing member 336 is secured to the additional fixing member 338 using the additional fastener 339. The additional fastener 339 includes a rivet. However, the additional fastener 339 may include other fasteners such as a screw.

[0316] The first guiding member 318A includes a first coupling arm 340 and a first additional coupling arm 342. The first coupling arm 340 is configured to be pivotally coupled to the link member 24 of the link assembly structure 20 (see, for example, Figure 39). The first additional coupling arm 342 is configured to be pivotally coupled to the link member 24 of the link assembly structure 20 (see, for example, Figure 39).

[0317] The first coupling arm 340 extends from the fixing member 328 away from the chain guide space 324. The first additional coupling arm 342 extends from the fixing member 328 away from the chain guide space 324.

[0318] As shown in Figure 41, the first guide member 318A includes a second coupling arm 344 and a second additional coupling arm 346. The second coupling arm 344 is configured to pivotally couple to an additional link member 22 of the link assembly structure 20 (see, for example, Figure 39). The second additional coupling arm 346 is configured to pivotally couple to the additional link member 22 of the link assembly structure 20 (see, for example, Figure 39). The second coupling arm 344 and the second additional coupling arm 346 extend from the second guide plate 322 along a first direction D81.

[0319] As shown in Figure 42, the first extension member 330 has a first end portion 350, a second end portion 352, and a first intermediate portion 354 positioned between the first end portion 350 and the second end portion 352. The second extension member 332 has a third end portion 356, a fourth end portion 358, and a second intermediate portion 360 positioned between the third end portion 356 and the fourth end portion 358.

[0320] The first intermediate portion 354 of the first extension member 330 is spaced apart from the second intermediate portion 360 of the second extension member 332. The first intermediate portion 354 of the first extension member 330 is spaced apart from the second intermediate portion 360 of the second extension member 332 along the second direction D82. The first end portion 350 of the first extension member 330 is coupled to the second guide plate 322. The third end portion 356 of the second extension member 332 is coupled to the second guide plate 322. The first end portion 350 of the first extension member 330 is spaced apart from the third end portion 356 of the second extension member 332 along the second direction D82. The second end portion 352 of the first extension member 330 is coupled to the fourth end portion 358 of the second extension member 332.

[0321] A fastening hole 330A is disposed between the first end portion 350 and the second end portion 352 to secure the first extension member 330 to the first guide member 318A. A fastening hole 330B is disposed between the first end portion 350 and the second end portion 352 to secure the first extension member 330 to the first guide member 318A. However, fastening holes 330A and 330B may be disposed in another location.

[0322] As shown in Figure 43, the first extension member 330 extends along a first extension direction D91. The second extension member 332 extends along a second extension direction D92. The first extension direction D91 is not parallel to the second extension direction D92. The first intermediate portion 354 extends from the first end portion 350 along the first extension direction D91 to the second end portion 352. The second intermediate portion 360 extends from the third end portion 356 along the second extension direction D92 to the fourth end portion 358. The first extension direction D91 is parallel to the first direction D81. The second extension direction D92 is inclined relative to both the first extension direction D91 and the first direction D81.

[0323] The second extension member 332 is positioned downstream of the first extension member 330 relative to one of the drive directions D93 of the chain C. The drive direction D93 of the chain C is the direction in which the chain C passes through the chain guide space 324 during pedaling. The drive direction D93 is substantially parallel to the second direction D82.

[0324] The first extension member 330 has a first width W1 defined along the second direction D82. The second extension member 332 has a second width W2 defined along the second direction D82. The first width W1 is different from the second width W2. The first width W1 is greater than the second width W2. However, the first width W1 may be equal to or less than the second width W2.

[0325] A first additional coupling arm 342 is spaced apart from a first coupling arm 340. A first extension member 330 is provided between the first coupling arm 340 and the first additional coupling arm 342. The first additional coupling arm 342 is spaced apart from the first coupling arm 340 along a second direction D82. The first extension member 330 is provided between the first coupling arm 340 and the first additional coupling arm 342 along a second direction D82.

[0326] The second guide member 318B includes a guide plate opening 362 defined by a second guide plate 322, a first extension member 330, and a second extension member 332. The second guide plate 322, the first extension member 330, and the second extension member 332 are configured to surround the guide plate opening 362. As seen in Figures 38 and 43, a first coupling arm 340 is provided in the guide plate opening 362.

[0327] In the modified examples depicted in Figures 38 to 43, the extension member 326 and the second guide plate 322 are integrally provided as a single-piece component. The fixing member 328 and the first guide plate 160 are integrally provided as a single-piece component. However, the extension member 326 may be a component separate from the second guide plate 322. The extension member 328 may be a component separate from the first guide plate 160. The structures of the first guide member 318A and the second guide member 318B can be applied to the chain guide 18 of the bicycle derailleurs 10 and 210 of the first and second embodiments.

[0328] The term "comprising" and its derivatives as used herein are intended to be open-ended terms, specifically referring to the presence of the stated features, elements, components, groups, wholes and / or steps, but not excluding the presence of other unstated features, elements, components, groups, wholes and / or steps. This concept also applies to terms with similar meanings, such as the terms "having," "comprising," and their derivatives.

[0329] The terms “component,” “section,” “part,” “part,” “element,” “body,” and “structure” used in the singular can have a dual meaning of a single component or a plurality of components.

[0330] The ordinal numbers such as "first" and "second" used in this application are merely identifiers and do not have any other meaning, such as a specific order or the like. Furthermore, for example, the term "first element" does not imply the existence of "second element," and the term "second element" does not imply the existence of "first element."

[0331] In addition to configurations in which the element pairs have the same shape or structure as each other, the term "...pair" used herein may also cover configurations in which the element pairs have different shapes or structures from each other.

[0332] The terms "one", "one or more" and "at least one" are used interchangeably in this document.

[0333] The phrase “at least one of…” used in this invention means “one or more” of a desired option. For example, if the number of options is 2, the phrase “at least one of…” used in this invention means “only one single option” or “all two options”. For another example, if the number of options is equal to or greater than 3, the phrase “at least one of…” used in this invention means “only one single option” or “any combination of two options equal to or greater than two options”. For example, the phrase “at least one of A and B” covers (1) only A, (2) only B, and (3) both A and B. The phrase “at least one of A, B, and C” covers (1) only A, (2) only B, (3) only C, (4) both A and B, (5) both B and C, (6) both A and C, and (7) all 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".

[0334] Finally, the degree terms such as “substantially,” “about,” and “approximately” used herein mean a reasonable deviation from the modified term that will not significantly alter the final result. All numerical values ​​described in this application may be interpreted as including terms such as “substantially,” “about,” and “approximately.”

[0335] It is obvious that many modifications and variations can be made to the present invention in light of the foregoing teachings. Therefore, it should be understood that the present invention can be practiced in ways other than those specifically described herein, within the scope of the appended claims.

[0336] 2: Bicycle 2A: Body 2B: Car seat 2C: Handle 3: Operating device 4: Operating device / bicycle frame 4A: Tubular portion 4B: Seat tube 6: Junction box / installation fasteners 6A: External thread 8: Clamping 8A: Clamping opening 8B: Central axis 10: Bicycle derailleur 12: Base components 12A: Insertion opening 12B: Groove 14: Mounting holes 14A: Threaded hole 16: Mounting Surface 16A: Curved surface 16B: Reference plane 18: Chain guide 18A: Internal guide component 18B: External guidance component 18C: Higher-grade positioning components 19: Offset component 20: Linkage assembly structure 22: First Linkage Member / Inner Linkage Member 22A: First Linkage Arm 22B: First Additional Linkage Arm 22C: Intermediate plate 24: Second Link Member / Outer Link Member 26: First Linkage Pin / Inner Linkage Pin 28: Second Linkage Pin / Outer Linkage Pin 28A: External threaded component 30: Third Linkage Pin 32: Fourth Linkage Pin 34: Motor Unit 35: Motor 35A: Output shaft component 36: Bicycle gear structure 38: Gear 40: Spur gear 42: Rotational force transmission path 44: Output Structure 46: Pin body 46A: Second end portion 46B: First end portion 46C: Middle part 48: Tool engagement profile 50: Tool engagement hole 52: Flat inner surface 53: First coupling component 54: Second coupling component 56: First profile / torque transmission profile 58: Second outline 60: First flat surface 62: Second flat surface 64: Coupling hole / Third inner connecting rod pin receiving opening 65: Additional coupling hole / third inner connecting rod pin receiving opening 66: Meshing body 68: Gear section 70: First engagement hole / Second inner connecting rod pin receiving opening 72: First meshing component 76: Outer contour 78: Inner contour 80: External flat surface 82: Inner flat surface 84: Tubular components 86: Sleeve 88: Second meshing component 90: Second meshing hole / second inner connecting rod pin receiving opening 92: Additional Outer Contour 93: Additional Inner Contour 94: First support hole / first inner connecting rod pin receiving opening 95: Second support hole / first inner connecting rod pin receiving opening 96: Matrix 98: First Support 98A: First Support Component 98B: First Bushing 98C: First hole 100: Second support 100A: Second support component 100B: Second Bushing 100C: Second hole 102: First outer connecting rod pin receiving opening 103: First outer connecting rod pin receiving opening 104: Third Support 105: Fourth Support 106: Second outer connecting rod pin receiving opening 107: Pin support component 108: Third outer connecting rod pin receiving opening 109: Support pin / Second pin 109A: Second Pin End 109B: Second pair of pin ends 109C: Support Bushing 109D: Support Bushing 109E: Hole 109F: Hole 110: Outer shell 111: Cover 111A: Cover opening / Second inner link pin receiving opening 112: First outer shell 112A: Accommodation space 112B: First outer casing support component 112C: First through hole / second inner connecting rod pin receiving opening 112D: Connector hole 114: Second outer shell 114B: Second outer shell support component 114C: Second through hole / second inner connecting rod pin receiving opening 115: Third outer shell 116: Gear support structure 122: First Shot 122A: First pin end 122B: First pair of pin ends 128: Fourth Selling 128A: Fourth pin 128B: Fourth pair of pin ends 128C: Support Bushing 128D: Support bushing 130: Motor driver 132: Communicator 134: Circuit Board 135: System Bus 136: Connector 137: Connector Cover 137A: Cable Opening 138: Rotation Sensor 140: Sensor Target 150: Lower-end positioning surface 152: Higher-grade positioning surface 160: Inner guide plate / First guide plate 162: Opening 164: Inner perimeter 166: Opening 168: Opening 170: Opening 174: Surrounding Wall 174A: Ring end 176: Internal guiding surface 178: Additional opening 210: Bicycle derailleur 252: First coupling component 254: Second coupling component 254A: Coupling section 256: First profile / torque transmission profile 258: Second Outline 260: First flat surface 262: Second flat surface 264: Coupling hole / Third inner connecting rod pin receiving opening 265: Additional Coupling Components 270: First engagement hole / Second inner connecting rod pin receiving opening 272: First meshing component 276: Outer contour 278: Inner contour 280: External flat surface 282: Inner flat surface 290: Retainer 292:Attachment 293: Attachment Arm 294: Retaining the body 296: Engaging components 318A: First guiding member / inner guiding member 318B: Second guidance component / outer guidance component 322: Second guide plate 324: Chain guide space 326: Extension component 328: Fixed components 328A: Additional fastening hole 328B: Additional fastening hole 330: First extension component 330A: Fastening hole 330B: Fastening hole 332: Second extension component 334A: Fasteners 334B: Fasteners 336: Additional fixing components 338: Additional fixing components 339: Additional Fasteners 340: First coupling arm 342: First Additional Coupler Arm 344: Second coupling arm 346: Second Additional Coupler Arm 350: First end part 352: Second end part 354: First Middle Section 356: Third end part 358: Fourth end part 360: Second Middle Section 362: Guide plate opening 380: Additional outer flat surface 382: Additional inner flat surface 392: Additional Outer Contour 394: Additional Inner Contour A1: Internal coaxial A2: External coaxial AR1: Area 1 AR2: Second Area AR3: Configuration Area C: Chain CA1: Central axis CR: Crank CS1: Upshift signal CS2: Downshift signal D2: Reference Direction D3: Vertical direction D4: Axial direction D5: Emphasize Direction D6: Axial direction D7: Emphasizing Direction D11: Outward shift direction D12: Inward shift direction D81: First Direction D82: Second Direction D91: First extension direction D92: Second extension direction D93: Direction of transmission DM11: First outer diameter DM12: Second outer diameter DM24: outer diameter DM25: Outer diameter DM26: Outer diameter DM27: Outer Diameter DT: Transmission System EC1: Cable EC2: Cable F1: First fastener F3: Third fastener F5: Fasteners F21: Second fastener F22: Second fastener FS: Front sprocket assembly G1: Input gear G2: First Gear G3: First Extra Gear G4: Third transmission gear / Second gear G5: First Additional Transmission Gear / Second Additional Gear G6: First transmission gear / Third gear G7: Second transmission gear G8: Sensor Gear G9: Gear G10: Output gear G11: Sector gear G41: Attachment hole G56: Engaging part GA2: First gear shaft GA4: Second gear shaft GA6: Third gear shaft GA8: Fourth gear shaft L1: First Length L2: Second Length LA1: Longitudinal axis LM: Linkage component LP: Connecting pin P11: Lower gear P12: Higher grade PA: Connecting rod pivot PA1: First pivot / internal connecting rod pivot PA2: Second pivot / External connecting rod pivot PA3: Third Pivot PA4: Fourth Pivot PS: Power supply / Power adapter R1: First link pin receiving opening R2: Second link pin receiving opening R3: Third link pin receiving opening R11: First inner connecting rod pin receiving opening R12: First outer connecting rod pin receiving opening R21: Second inner link pin receiving opening R22: Second outer connecting rod pin receiving opening R31: Third inner link pin receiving opening R32: Third outer link pin receiving opening RA1: First rotation axis RA2: Second rotation axis RA3: Third Rotation Axis RD: Bicycle derailleur RL1: First Reference Line RL2: Second Reference Line RL3: Third Reference Line RL4: Fourth Reference Line RS: Rear sprocket assembly S1: First support component S2: Second support component S3: Third support component S4: Fourth Support Component S5: Fifth Support Component S11: First support hole S12: First support hole S31: Third support hole S41: Fourth support hole S51: Fifth support hole SA1: First separation region SA2: Second Separation Region TD: Torque Diode TD1: First shaft / Third pin TD2: Second Shaft TD3: Outer shell TD4: Gear support hole TD11: Third Pin End TD12: Third pair of pin ends TD13: Support Bushing TD21: Sales End TD22: For the pin end TD23: Support Bushing TD31: Outer shell body TD32: Gear support component TD33: Fixed component TD34: Fixing hole W1: First width W2: Second width

Claims

1. A bicycle derailleur, comprising: A base component; A linkage structure comprising a first link pin rotatably mounted to one of the base members about a first pivot. A motor unit configured to apply a rotational force to the first connecting pin to cause the first connecting pin to rotate relative to the base member about the first pivot axis, wherein the motor unit includes an output structure coupled to the first connecting pin to be rotatable relative to the base member about the first pivot axis; the output structure includes: a meshing body including a first meshing bore; and a gear portion provided on the meshing body; the meshing body includes a tubular member and a sleeve, the sleeve being a member separate from the tubular member, and the sleeve including the first meshing bore and a second meshing member, the tubular member including a second meshing bore, and the second meshing member being provided in the second meshing bore to transmit the rotational force from the tubular member to the sleeve.

2. The bicycle derailleur of claim 1, wherein the linkage structure includes a first linkage member coupled to the first linkage pin so as to be pivotable about the first pivot relative to the base member.

3. The bicycle derailleur of claim 2, further comprising a chain guide pivotally coupled to the first link member to move relative to the base member in response to pivotal movement of the first link member relative to the base member.

4. The bicycle derailleur of claim 2, wherein at least one of the first link pin and the output structure includes a first coupling member, the first link member includes a second coupling member, and the first coupling member engages with the second coupling member to transmit the rotational force from the first link pin and the at least one of the output structure to the first link member.

5. The bicycle derailleur of claim 4, wherein when viewed along the first pivot, the first coupling member has a first profile other than a perfect circle, and when viewed along the first pivot, the second coupling member has a second profile other than a perfect circle.

6. The bicycle derailleur of claim 5, wherein the first profile of the first coupling member has a polygonal shape, and the second profile of the second coupling member has a polygonal shape.

7. The bicycle derailleur of claim 4, wherein the first coupling member includes at least a first flat surface, the second coupling member includes at least a second flat surface, and wherein, in a state in which the first coupling member and the second coupling member are engaged, the at least one first flat surface may contact the at least one second flat surface to transmit the rotational force from the first connecting pin and the at least one of the output structure to the first connecting member.

8. The bicycle derailleur of claim 4, wherein the first link pin includes a first engagement member, and the first engagement member is provided in the first engagement hole to transmit the rotational force from the output structure to the first link pin.

9. The bicycle derailleur of claim 8, wherein, when viewed along the first pivot, the first engaging member has an outer contour other than a perfect circle, and when viewed along the first pivot, the first engaging hole has an inner contour other than a perfect circle.

10. The bicycle derailleur of claim 8, wherein the first engaging member engages frictionally with the first engaging bore.

11. The bicycle derailleur of claim 9, wherein the outer contour of the first engaging member has a polygonal shape, and the inner contour of the first engaging hole has a polygonal shape.

12. The bicycle derailleur of claim 8, wherein the first engaging member includes at least one outer flat surface, the first engaging bore includes at least one inner flat surface, and wherein the first engaging member is provided in one state in the first engaging bore, the at least one outer flat surface being contactable with the at least one inner flat surface to transmit the rotational force from an output gear to the first connecting pin.

13. The bicycle derailleur of claim 1, wherein, when viewed along the first pivot, the second engaging member has an additional outer contour in addition to a perfect circle, and when viewed along the first pivot, the second engaging bore has an additional inner contour in addition to a perfect circle.

14. The bicycle derailleur of claim 13, wherein the additional outer contour of the second engagement member has a polygonal shape, and the additional inner contour of the second engagement hole has a polygonal shape.

15. The bicycle derailleur of claim 1, wherein the second engagement member includes at least one additional outer flat surface, the second engagement bore includes at least one additional inner flat surface, and the at least one additional outer flat surface is contactable with the at least one additional inner flat surface to transmit the rotational force from the tubular member to the sleeve.

16. The bicycle derailleur of claim 1, wherein the second engaging member engages frictionally with the second engaging bore.

17. The bicycle derailleur of claim 1, wherein the base member includes a first support hole and a second support hole spaced apart from the first support hole along the first pivot, and the first link pin includes: a first end provided in the first support hole; and a second end provided in the second support hole.

18. The bicycle derailleur as claimed in claim 3, wherein the linkage assembly structure includes: A second connecting rod component; A second link pin configured to pivotally couple the second link member to the base member about a second pivot axis; A third link pin configured to pivotally couple the first link member to the chain guide about a third pivot; and a fourth link pin configured to pivotally couple the second link member to the chain guide about a fourth pivot.

Images