FR2380938A1 - Bottom bracket mounted bicycle derailleur gear chain shifter - has cylinders with sloping contact faces to adjust chain shifter - Google Patents

Bottom bracket mounted bicycle derailleur gear chain shifter - has cylinders with sloping contact faces to adjust chain shifter

Info

Publication number
FR2380938A1
FR2380938A1 FR7804905A FR7804905A FR2380938A1 FR 2380938 A1 FR2380938 A1 FR 2380938A1 FR 7804905 A FR7804905 A FR 7804905A FR 7804905 A FR7804905 A FR 7804905A FR 2380938 A1 FR2380938 A1 FR 2380938A1
Authority
FR
France
Prior art keywords
bracket
chain shifter
shifter
lug
bottom bracket
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.)
Granted
Application number
FR7804905A
Other languages
French (fr)
Other versions
FR2380938B1 (en
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 Industrial Co Ltd
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
Priority claimed from JP1833577A external-priority patent/JPS53102551A/en
Priority claimed from JP1833677A external-priority patent/JPS53102552A/en
Application filed by Shimano Industrial Co Ltd filed Critical Shimano Industrial Co Ltd
Publication of FR2380938A1 publication Critical patent/FR2380938A1/en
Application granted granted Critical
Publication of FR2380938B1 publication Critical patent/FR2380938B1/fr
Granted legal-status Critical Current

Links

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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/131—Front derailleurs
    • B62M9/134—Mechanisms for shifting laterally
    • B62M9/1344—Mechanisms for shifting laterally limiting or positioning the movement
    • 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
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/131—Front derailleurs
    • B62M9/134—Mechanisms for shifting laterally
    • B62M9/1342—Mechanisms for shifting laterally characterised by the linkage mechanisms
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/131—Front derailleurs
    • B62M9/135—Mounting the derailleur on the frame
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/131—Front derailleurs
    • B62M9/136—Chain guides; Mounting thereof

Abstract

The forward derailleur gear for bicycles has the chain shifter (10) attached near the bottom bracket carrying the cranks. The shifter is carried by a parallelogram linkage mounted on a lug (9) projecting from the tube (1a) supporting the bracket. The parallelogram linkage includes two links and a bracket attached to the chain guide (10). An arm with a cable retainer is rigidly fastened to one link. Thus the control cable can produce combined sine and vertical motion of the chain guide (10). The unit is carried on the bicycle frame (1a) by a tightening band (18) carrying the lug (9). The bracket (14) has an integral tube (11) through which passes a screw (26) which holds the bracket (14) to the lug (9) using a nut (28) and allowing adjustment. A return spring is provided for the cable, motion is limited by screws (30) in conjunction with the bracket integral with the outer link (15).
FR7804905A 1977-02-21 1978-02-21 Bottom bracket mounted bicycle derailleur gear chain shifter - has cylinders with sloping contact faces to adjust chain shifter Granted FR2380938A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1833577A JPS53102551A (en) 1977-02-21 1977-02-21 Front derailer
JP1833677A JPS53102552A (en) 1977-02-21 1977-02-21 Front derailer

Publications (2)

Publication Number Publication Date
FR2380938A1 true FR2380938A1 (en) 1978-09-15
FR2380938B1 FR2380938B1 (en) 1982-05-28

Family

ID=26355013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7804905A Granted FR2380938A1 (en) 1977-02-21 1978-02-21 Bottom bracket mounted bicycle derailleur gear chain shifter - has cylinders with sloping contact faces to adjust chain shifter

Country Status (2)

Country Link
FR (1) FR2380938A1 (en)
IT (1) IT1094213B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452593A (en) * 1981-06-17 1984-06-05 Huret Et Ses Fils Guiding and actuating mechanism in particular for a bicycle derailleur
US4529395A (en) * 1981-12-23 1985-07-16 Huret Et Ses Fils Crank-gear derailleur
CN113078584A (en) * 2021-02-26 2021-07-06 史力韦 Tightener for electric power engineering cable installation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2093242A5 (en) * 1970-06-08 1972-01-28 Juy Lucien
US3890847A (en) * 1974-04-12 1975-06-24 Beatrice Foods Co Front derailler for bicycles
FR2294079A1 (en) * 1974-12-12 1976-07-09 Shimano Industrial Co FRONT DERAILLEUR FOR A BICYCLE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2093242A5 (en) * 1970-06-08 1972-01-28 Juy Lucien
US3890847A (en) * 1974-04-12 1975-06-24 Beatrice Foods Co Front derailler for bicycles
FR2294079A1 (en) * 1974-12-12 1976-07-09 Shimano Industrial Co FRONT DERAILLEUR FOR A BICYCLE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452593A (en) * 1981-06-17 1984-06-05 Huret Et Ses Fils Guiding and actuating mechanism in particular for a bicycle derailleur
US4529395A (en) * 1981-12-23 1985-07-16 Huret Et Ses Fils Crank-gear derailleur
CN113078584A (en) * 2021-02-26 2021-07-06 史力韦 Tightener for electric power engineering cable installation
CN113078584B (en) * 2021-02-26 2022-09-16 广西电网有限责任公司柳州供电局 Tightener for electric power engineering cable installation

Also Published As

Publication number Publication date
IT1094213B (en) 1985-07-26
IT7820412A0 (en) 1978-02-20
FR2380938B1 (en) 1982-05-28

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Legal Events

Date Code Title Description
ST Notification of lapse