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 shifterInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
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).
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)
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)
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 |
-
1978
- 1978-02-20 IT IT20412/78A patent/IT1094213B/en active
- 1978-02-21 FR FR7804905A patent/FR2380938A1/en active Granted
Patent Citations (3)
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)
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 |
---|---|
FR2380938B1 (en) | 1982-05-28 |
IT7820412A0 (en) | 1978-02-20 |
IT1094213B (en) | 1985-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |