US20030100392A1 - Method and apparatus for shifting a bicycle transmission - Google Patents

Method and apparatus for shifting a bicycle transmission Download PDF

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Publication number
US20030100392A1
US20030100392A1 US10/001,324 US132401A US2003100392A1 US 20030100392 A1 US20030100392 A1 US 20030100392A1 US 132401 A US132401 A US 132401A US 2003100392 A1 US2003100392 A1 US 2003100392A1
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US
United States
Prior art keywords
transmission
shift
communication path
command
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/001,324
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English (en)
Inventor
Tadashi Ichida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimano Inc
Original Assignee
Shimano Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimano Inc filed Critical Shimano Inc
Priority to US10/001,324 priority Critical patent/US20030100392A1/en
Assigned to SHIMANO, INC. reassignment SHIMANO, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ICHIDA, TADASHI
Priority to TW091124345A priority patent/TW593054B/zh
Priority to JP2002321237A priority patent/JP2003185008A/ja
Priority to CN02151428A priority patent/CN1422779A/zh
Priority to DE60200875T priority patent/DE60200875T2/de
Priority to EP02026090A priority patent/EP1314637B1/fr
Priority to AT02026090T priority patent/ATE272524T1/de
Publication of US20030100392A1 publication Critical patent/US20030100392A1/en
Priority to US11/754,343 priority patent/US20070232425A1/en
Priority to US11/970,753 priority patent/US8360909B2/en
Priority to US13/483,727 priority patent/US8475305B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M25/00—Actuators for gearing speed-change mechanisms specially adapted for cycles
    • B62M25/02—Actuators for gearing speed-change mechanisms specially adapted for cycles with mechanical transmitting systems, e.g. cables, levers
    • B62M25/04—Actuators for gearing speed-change mechanisms specially adapted for cycles with mechanical transmitting systems, e.g. cables, levers hand actuated
    • B62M25/045—Actuators for gearing speed-change mechanisms specially adapted for cycles with mechanical transmitting systems, e.g. cables, levers hand actuated having single actuating means operating both front and rear derailleur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M25/00—Actuators for gearing speed-change mechanisms specially adapted for cycles
    • B62M25/08—Actuators for gearing speed-change mechanisms specially adapted for cycles with electrical or fluid transmitting systems

Definitions

  • the present invention is directed to bicycle control devices and, more particularly, to a method and apparatus for shifting a bicycle transmission.
  • Electrically controlled bicycles usually include a front transmission associated with the front pedal assembly, a rear transmission associated with the rear wheel, a motor for each transmission, a control unit for controlling each motor, and a shift control device such as a lever or switch that provides electrical shift command signals to the control unit.
  • the control unit operates the motors for each transmission based on the electrical signals received from the shift control device.
  • the transmission increases or decreases only one speed stage or gear for each shift command received from the shift control device, and the front or rear transmission operates at least once for each shift command. This can substantially delay the speed change operation and create considerable mechanical noise and wear on the components if the rider wants to shift multiple speed stages at one time.
  • a control mechanism for use with first and second bicycle transmissions includes a transmission position communication path for communicating information indicating the operational positions of the first and second transmissions; a transmission command communication path for communicating information for controlling the operation of the first and second transmissions; a shift command communication path for receiving shift commands to select a speed stage of the bicycle; and a transmission control unit operatively coupled to the shift command communication path, to the transmission position communication path and to the transmission command communication path for receiving the shift commands and the information indicating the operational positions of the first and second transmissions and for generating the information for controlling the operation of the first and second transmissions.
  • the transmission control unit When the transmission control unit receives at least one shift command requesting a shift through N speed stages to a destination speed stage, wherein N is an integer greater than one, the transmission control unit generates information for causing the first and second transmissions in combination to move a total of M times to reach the destination speed stage, wherein M is an integer less than N.
  • the present invention also contemplates a method for operating such transmissions.
  • a derailleur-operated bicycle may include a plurality of front sprockets; a front derailleur for moving a chain among the plurality of front sprockets; a plurality of rear sprockets; a rear derailleur for moving the chain among the plurality of rear sprockets; front and rear derailleur motors for moving the front and rear derailleurs, respectively; and front and rear derailleur position sensors for providing signals indicating the front and rear sprocket positions of the front and rear derailleurs, respectively.
  • the sprocket positions of the front and rear derailleurs set a speed stage of the bicycle.
  • the control unit used with such a bicycle includes a transmission position communication path operatively coupled to the front and rear derailleur position sensors for communicating the signals indicating the front and rear sprocket positions; a transmission command communication path operatively coupled to the front and rear derailleur motors for communicating information for controlling the operation of the front and rear derailleur motors; a shift command communication path for receiving shift commands to set a desired speed stage; and a transmission control unit operatively coupled to the shift command communication path, to the transmission position communication path and to the transmission command communication path for receiving the shift commands and the signals indicating the front and rear sprocket positions and for generating the information for controlling the operation of the front and rear derailleur motors.
  • the transmission control unit When the transmission control unit receives at least one shift command requesting a shift through N speed stages to a destination speed stage, where N is an integer greater than one, the transmission control unit generates information for causing the front and rear deraille in combination to move a total of M sprocket positions to reach the destination speed stage, where M is an integer less than N.
  • the sprockets can be selected so that a change of gear ratio when the front derailleur moves from a first front sprocket to a second front sprocket is approximately equal to twice a change of gear ratio when the rear derailleur moves from a first rear sprocket to a second rear sprocket. Such a configuration increases the number of opportunities for shifting multiple steps with fewer transmission movements.
  • FIG. 1 is a side view of a bicycle that includes a particular embodiment of an apparatus according to the present invention for shifting a bicycle transmission;
  • FIG. 2 is a block diagram of a particular embodiment of the apparatus according to the present invention for shifting a bicycle transmission
  • FIG. 3A is a timing diagram illustrating a possible electrical shift command signal received by the control unit shown in FIG. 2;
  • FIG. 3B is a timing diagram illustrating another possible electrical shift command signal received by the control unit shown in FIG. 2;
  • FIG. 3C is a timing diagram illustrating another possible electrical shift command signal received by the control unit shown in FIG. 2;
  • FIG. 3D is a timing diagram illustrating a possible composite electrical shift command signal received by the control unit shown in FIG. 2;
  • FIG. 3E is a timing diagram illustrating another possible composite electrical shift command signal received by the control unit shown in FIG. 2.
  • FIG. 1 is a side view of a bicycle 10 that incorporates a particular embodiment of an apparatus according to the invention for shifting a bicycle transmission.
  • Bicycle 10 may be any type of bicycle, and in this embodiment bicycle 10 includes a typical frame 18 comprising a top tube 22 , a head tube 24 , a down tube 26 extending downwardly from head tube 24 , a seat tube 30 supporting a seat 32 and extending downwardly from top tube 22 , a bottom bracket (not shown) disposed at the junction of down tube 26 and seat tube 30 , a pair of seatstays 34 extending rearwardly and downwardly from top tube 22 , and a pair of chainstays 38 extending rearwardly from the bottom bracket.
  • a fork 42 is rotatably supported within head tube 24
  • a front wheel 46 is rotatably supported to the lower end of fork 42
  • Handlebars 50 control the rotational direction of fork 42 and front wheel 46 in a well-known manner.
  • a rear wheel 54 having a plurality of coaxially mounted rear (freewheel) sprockets 56 is rotatably supported at the junction of seatstays 34 and chainstays 38
  • a pedal assembly 58 supporting a plurality of front (chainwheel) sprockets 62 is rotatably supported within the bottom bracket.
  • two or three front sprockets 62 rotate coaxially and integrally with pedal assembly 58 .
  • a chain 66 engages one of the plurality of front sprockets 62 and one of the plurality of rear sprockets 56 .
  • a front derailleur 70 moves chain 66 from one front sprocket 62 to another, and a rear derailleur 74 moves chain 66 from one rear sprocket 56 to another.
  • front derailleur 70 is controlled by pulling and releasing a conventional Bowden-type control cable 78 coupled to a front derailleur motor 82 (FIG. 2) disposed in a motor assembly 84
  • rear derailleur 74 is controlled by pulling and releasing a Bowden-type control cable 86 coupled to a rear derailleur motor 88 disposed in motor assembly 84
  • a single motor may be coupled to separate cable pulling structures through clutches or otherwise to perform the same function, and such also could be deemed distinct motors.
  • a front derailleur position sensor 87 and a rear derailleur position sensor 88 are provided for sensing the operational positions of the front and rear derailleur 70 and 74 , respectively.
  • position sensors provide signals that, in turn, determine which front sprocket 62 and rear sprocket 56 is currently engaged by chain 66 .
  • Such position sensors may comprise, for example, known potentiometers for sensing the positions of the output shafts of front derailleur motor 82 and rear derailleur motor 88 , but there are many other known structures that can perform these functions.
  • a speed sensor 91 is mounted to fork 42 for receiving signals from a magnet 89 mounted to front wheel 46 for sensing the speed of the bicycle in a well-known manner
  • a cadence sensor 92 is mounted to pedal assembly 58 for receiving signals from a magnet 93 mounted to one of the chainstays 38 for sensing the pedal cadence in a well known manner.
  • a transmission control unit 90 is operatively coupled to motor assembly 84 through a transmission command communication path 94 and to position sensors 87 and 88 through a transmission position communication path 96 for generating transmission command (TC) signals for controlling the operation of motor assembly 84 in accordance with the information from position sensors 87 and 88 .
  • a manually operated shift command unit 98 comprising a shift-up switch 98 A and a shift-down switch 98 B, is operatively coupled to transmission control unit 90 through a shift command communication path 102 for communicating electrical shift commands (described in more detail below) to transmission control unit 90 .
  • an automatic shift command unit 103 is operatively coupled to transmission control unit 90 through shift command communication path 102 , to position sensors 87 and 88 through transmission position communication path 96 , to speed sensor 91 through a speed communication path 105 , and to cadence sensor 92 through a cadence communication path 106 for communicating electrical shift commands to transmission control unit 90 in accordance with signals received from position sensors 87 and 88 , speed sensor 91 and/or cadence sensor 92 .
  • Such shift commands may comprise the shift commands described below for shift command unit 98 , or they may comprise digital messages.
  • Automatic shift command unit 103 includes a parameter memory 107 for storing wheel circumference, cadence tables, speed tables and/or acceleration tables for generating shift commands based on cadence, speed and/or acceleration in accordance with known programming techniques.
  • Parameter memory 107 may be a hardware table memory, a software table memory, or some other structure that provides the same information.
  • Other inputs 110 may be operatively coupled to automatic shift command unit 103 through a communication path 112 for communicating other information such as from a heart rate sensor, a slope sensor, a pedal or other torque sensor, etc.
  • Parameter memory 107 and the programming of automatic shift command unit 103 may be configured accordingly to generate shift commands in accordance with these other inputs in any combination.
  • communication paths 94 , 96 , 102 , 105 and 106 have the form of electrical wires, but in other embodiments such communication paths may comprise fiber optic devices, wireless communication paths, or some other mechanism.
  • transmission control unit 90 when the transmission control unit 90 receives at least one shift command requesting a shift through N speed stages to a destination speed stage, wherein N is an integer greater than one, transmission control unit 90 generates TC signals (digital or analog) for causing front derailleur 70 and rear derailleur 74 in combination to move a total of M times to reach the destination speed stage, wherein M is an integer less than N.
  • transmission control unit 90 comprises a table memory 110 for storing a table containing the information for controlling the operation of front derailleur 70 and rear derailleur 74 .
  • Table memory 110 may be a hardware table memory, a software table memory, or some other structure that provides the same information. The content of table memory 110 depends upon the configuration of the bicycle. Three examples will be provided below, and other configurations will be readily apparent to one of ordinary skill in the art.
  • FIGS. 3 A- 3 E are timing diagrams indicating various embodiments of shift commands generated by shift control unit 98 and the timing of TC signals generated by transmission control unit 90 .
  • the shift command signals are low active.
  • FIG. 3A illustrates a situation wherein a shift command signal is generated by shift control device 98 for a time interval P that is less than a predetermined time interval X.
  • such a shift command signal is assumed to be a spurious signal, and no operation is performed.
  • FIG. 3B illustrates a situation wherein a shift command signal is generated by shift control device 98 for a time interval Q that is greater than time interval X.
  • FIG. 3C illustrates a situation wherein a shift command signal is generated by shift control device 98 for a time interval R that is greater than time interval X and also greater than a time interval Y, wherein, for the purposes of measurement, time interval Y begins at the same instant as time interval X but is greater than time interval X.
  • a shift command signal requests a shift by two speed stages, and the TC signal is generated accordingly.
  • FIG. 3D illustrates a situation wherein a composite shift command signal appearing on two channels is generated by shift control device 98 .
  • the shift command signal appearing on channel A is generated for a time interval S that is greater than time interval X.
  • a shift command signal is generated on channel B prior to the expiration of time interval Y.
  • such a composite shift command signal requests a shift by two speed stages, and the TC signal is generated accordingly.
  • Such a composite signal could be generated by two separately operated switches, but in most cases it would be more convenient to generate such signals by a plunger with an electrical contact which successively and cumulatively contacts two other electrical contacts. Such a switch also could be used to generate the signal shown in FIGS.
  • FIG. 3E illustrates a situation wherein sequential shift command signals are generated by shift control device 98 .
  • two sequential shift command signals are generated within a time interval T of each other.
  • Such an action is similar to double-clicking a computer mouse.
  • such sequential shift command signals request a shift by two speed stages, and the TC signal is generated accordingly.
  • Each shift-up switch 98 A and shift-down switch 98 B may use any of the techniques illustrated in FIGS. 3 A- 3 E to suit the application.
  • Automatic shift command unit 103 may generate the signals illustrated in FIGS. 3 B- 3 E for the same purposes described for them, or it may generate digital messages. Digital messages would be particularly useful to request a shift through more than two speed stages, although manual shift command unit 98 could be configured to provide signals for that purpose as well.
  • the signals generated by automatic shift command unit 103 representing shifts through multiple speed stages could be generated based on cadence, speed, acceleration, or some other criteria.
  • Table 1 illustrates a bicycle with two front sprockets 62 and eight rear sprockets 56
  • Table 2 illustrates the shift commands and TC signals for operating front derailleur 70 and rear derailleur 74 for this configuration.
  • Transmission control unit 90 is programmed, whether through hardwired logic, software or otherwise to generate the appropriate TC signals on communication path 94 in response to the indicated shift command.
  • TABLE 1 Rear Sprocket Teeth 11 13 15 17 21 25 29 33 Front 46 4.18 3.54 3.07 2.71 2.19 1.84 1.59 1.39 Sprock- 34 3.09 2.62 2.27 2.00 1.62 1.36 1.17 1.03 et
  • Table 3 illustrates a bicycle with three front sprockets 62 and eight rear sprockets 56
  • Table 4 illustrates the shift commands and TC signals for operating front derailleur 70 and rear derailleur 74 for this configuration.
  • TABLE 3 Rear Sprocket Teeth 11 13 15 17 21 25 29 33 Front 46 4.18 3.54 3.07 2.71 2.19 1.84 1.59 1.39 Sprock- 34 3.09 2.62 2.27 2.00 1.62 1.36 1.17 1.03 et 24 2.18 1.85 1.60 1.41 1.14 0.96 0.83 0.73
  • Table 5 illustrates the shift commands and TC signals for operating front derailleur 70 and rear derailleur 74 for the same configuration when implementing the concept of a prohibited range of sprocket combinations.
  • Such prohibited sprocket combinations typically comprise the combination of the large front sprocket with the large rear sprockets, which results in excessive chain tension, and the small front sprocket with the small rear sprockets, which results in excessive chain looseness.
  • shift commands that request a change through two speed stages require only one movement of one derailleur.
  • chain 66 is disposed on the 34-tooth front sprocket 62 and the 33-tooth rear sprocket 56 , thus producing a speed stage having a gear ratio of 1.03.
  • shift control device 98 generates a signal indicating a two-step-up shift command (two sequential gear ratios)
  • transmission control unit 90 may generate a TC signal to move front derailleur 70 a single step so that chain 66 engages the 46-tooth front sprocket 62 , thus producing the speed stage having a gear ratio of 1.39.
  • Prior art electrically controlled bicycles would move rear derailleur 74 from the 33-tooth rear sprocket 56 to the 29-tooth rear sprocket 56 , and then to the 25-tooth rear sprocket 56 , thus producing the speed stage having a gear ratio of 1.36.
  • Such a technique requires a total of two movements, rather than the one movement taught herein.
  • the method and apparatus according to the present invention takes advantage of the fact that many front/rear sprocket combinations produce substantially the same gear ratio.
  • the TC signals are generated based on which combination of front and rear sprockets require the least number of movements of the front derailleur 70 and/or rear derailleur 74 to achieve the desired gear ratio.
  • particularly good results can be achieved by selecting the front and rear sprockets such that, for a given combination of front and rear sprockets, the change in gear ratio that results when switching from one front sprocket to another front sprocket is substantially an integral number of the change in gear ratio when switching from one rear sprocket to another rear sprocket.
  • the change in gear ratio that results when switching from one front sprocket to another front sprocket is substantially twice the change in gear ratio when switching from one rear sprocket to another rear sprocket. If a shift command signal is received that cannot be accommodated, such as a shift-up command to when the chain 66 currently engages the largest front sprocket 62 and the smallest rear sprocket 56 , then table memory 110 can instruct the system to sound an audible alarm indicating an illegal request. In such a situation front derailleur 70 and rear derailleur 74 remain stationary.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)
US10/001,324 2001-11-23 2001-11-23 Method and apparatus for shifting a bicycle transmission Abandoned US20030100392A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US10/001,324 US20030100392A1 (en) 2001-11-23 2001-11-23 Method and apparatus for shifting a bicycle transmission
TW091124345A TW593054B (en) 2001-11-23 2002-10-22 Method and apparatus for shifting a bicycle transmission
JP2002321237A JP2003185008A (ja) 2001-11-23 2002-11-05 自転車トランスミッションコントロール装置
CN02151428A CN1422779A (zh) 2001-11-23 2002-11-19 用于将自行车变速换档的方法和装置
AT02026090T ATE272524T1 (de) 2001-11-23 2002-11-22 Methode und vorrichtung zum schalten eines fahrradgetriebes
DE60200875T DE60200875T2 (de) 2001-11-23 2002-11-22 Methode und Vorrichtung zum Schalten eines Fahrradgetriebes
EP02026090A EP1314637B1 (fr) 2001-11-23 2002-11-22 Procédé et dispositif de commande de changement de vitesse pour transmission de bicyclette
US11/754,343 US20070232425A1 (en) 2001-11-23 2007-05-28 Method and apparatus for shifting a bicycle transmission
US11/970,753 US8360909B2 (en) 2001-11-23 2008-01-08 Method and apparatus for shifting a bicycle transmission
US13/483,727 US8475305B2 (en) 2001-11-23 2012-05-30 Method and apparatus for shifting a bicycle transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/001,324 US20030100392A1 (en) 2001-11-23 2001-11-23 Method and apparatus for shifting a bicycle transmission

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/754,343 Division US20070232425A1 (en) 2001-11-23 2007-05-28 Method and apparatus for shifting a bicycle transmission

Publications (1)

Publication Number Publication Date
US20030100392A1 true US20030100392A1 (en) 2003-05-29

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Family Applications (4)

Application Number Title Priority Date Filing Date
US10/001,324 Abandoned US20030100392A1 (en) 2001-11-23 2001-11-23 Method and apparatus for shifting a bicycle transmission
US11/754,343 Abandoned US20070232425A1 (en) 2001-11-23 2007-05-28 Method and apparatus for shifting a bicycle transmission
US11/970,753 Expired - Lifetime US8360909B2 (en) 2001-11-23 2008-01-08 Method and apparatus for shifting a bicycle transmission
US13/483,727 Expired - Fee Related US8475305B2 (en) 2001-11-23 2012-05-30 Method and apparatus for shifting a bicycle transmission

Family Applications After (3)

Application Number Title Priority Date Filing Date
US11/754,343 Abandoned US20070232425A1 (en) 2001-11-23 2007-05-28 Method and apparatus for shifting a bicycle transmission
US11/970,753 Expired - Lifetime US8360909B2 (en) 2001-11-23 2008-01-08 Method and apparatus for shifting a bicycle transmission
US13/483,727 Expired - Fee Related US8475305B2 (en) 2001-11-23 2012-05-30 Method and apparatus for shifting a bicycle transmission

Country Status (7)

Country Link
US (4) US20030100392A1 (fr)
EP (1) EP1314637B1 (fr)
JP (1) JP2003185008A (fr)
CN (1) CN1422779A (fr)
AT (1) ATE272524T1 (fr)
DE (1) DE60200875T2 (fr)
TW (1) TW593054B (fr)

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US20100218633A1 (en) * 2009-03-02 2010-09-02 Shimano Inc. Bicycle shifting control apparatus
US20100244401A1 (en) * 2009-03-31 2010-09-30 Shimano Inc. Bicycle shifting control apparatus
WO2012068265A1 (fr) * 2010-11-18 2012-05-24 Sean Michael Simpson Système et procédé permettant de contrôler la transmission d'un véhicule à propulsion humaine
USRE43562E1 (en) * 2003-02-25 2012-07-31 Shimano, Inc. Bicycle shift control apparatus that prevents undesirable chain angles
JP2012517382A (ja) * 2009-02-12 2012-08-02 ネクストドライブ リミテッド 自転車変速システム
US20130061705A1 (en) * 2011-09-09 2013-03-14 Sram, Llc Bicycles with electronic shifting systems and methods
US9487268B2 (en) * 2014-12-10 2016-11-08 Shimano Inc. Bicycle transmission apparatus
US9944350B2 (en) 2016-01-11 2018-04-17 Sram, Llc Chain guide sensor and methods of controling a bicycle

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JP2005104286A (ja) * 2003-09-30 2005-04-21 Shimano Inc 自転車用電子制御装置
JP2005238873A (ja) * 2004-02-24 2005-09-08 Shimano Inc 自転車用変速制御装置及びフロントディレーラの制御方法
KR20060066698A (ko) * 2006-05-29 2006-06-16 김기천 자전거 변속 장치
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EP2312180B1 (fr) 2009-10-13 2019-09-18 Fox Factory, Inc. Appareil pour contrôler un amortisseur hydraulique
GB2477942B (en) 2010-02-18 2012-07-04 Icon Technology Systems Ltd Water filters
EP3778358B1 (fr) 2010-07-02 2023-04-12 Fox Factory, Inc. Tige de selle réglable à verrou positif
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WO2013091083A1 (fr) 2011-12-22 2013-06-27 Industries Rad Inc. Cadre de bicyclette composite ayant des interconnexions électriques d'un seul tenant et procédé de fabrication de celui-ci
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ITMI20121990A1 (it) * 2012-11-22 2014-05-23 Campagnolo Srl Metodo per controllare elettronicamente un cambio di bicicletta e cambio di bicicletta servoassistito elettronicamente
US8882122B2 (en) * 2013-03-26 2014-11-11 Shimano Inc. Bicycle gear changing apparatus
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JP2015131533A (ja) * 2014-01-10 2015-07-23 株式会社シマノ 情報収集システム、情報処理システム、情報表示装置、およびコンピュータプログラム
JP2016020124A (ja) 2014-07-14 2016-02-04 株式会社シマノ 自転車用制御装置
DE102014111917A1 (de) * 2014-08-20 2016-02-25 Gustav Magenwirth Gmbh & Co. Kg Handbetätigte Gebereinheit
US10155567B2 (en) * 2014-10-07 2018-12-18 Shimano Inc. Bicycle shifting control apparatus
DE102015000422A1 (de) * 2015-01-14 2016-07-14 Sram Deutschland Gmbh Verfahren und Vorrichtung zum Steuern automatischer Schaltvorgänge einer elektrischen Gangschaltvorrichtung eines Fahrrads
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US20070232425A1 (en) 2007-10-04
EP1314637A1 (fr) 2003-05-28
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ATE272524T1 (de) 2004-08-15
US8360909B2 (en) 2013-01-29
TW593054B (en) 2004-06-21
DE60200875D1 (de) 2004-09-09
US8475305B2 (en) 2013-07-02
CN1422779A (zh) 2003-06-11
US20080108465A1 (en) 2008-05-08
US20120245809A1 (en) 2012-09-27
DE60200875T2 (de) 2005-01-05

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