WO2007121690A1 - Gear system - Google Patents
Gear system Download PDFInfo
- Publication number
- WO2007121690A1 WO2007121690A1 PCT/CZ2007/000029 CZ2007000029W WO2007121690A1 WO 2007121690 A1 WO2007121690 A1 WO 2007121690A1 CZ 2007000029 W CZ2007000029 W CZ 2007000029W WO 2007121690 A1 WO2007121690 A1 WO 2007121690A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case
- gear system
- transmission housing
- axle
- chain
- Prior art date
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
Definitions
- the invention is related to the gear system for the gear system of the bicycle arranged in the transmission housing on the crossbar in the area of the crankshaft.
- the cutouts are formed by the gaps between axially oriented pegs arranged in regular distances at the outside perimeter of the shifting cylinder and every first end of two-ply Jevers has the form of the spring-loaded snap.
- the advantages of the gear system by this invention are: A) its easy and simple operating due to the elimination of the part of friction forces; B) the elimination of the possibility of the crossing of the primary chain due to the exact definition of particular positions of the axle fork.
- Picture No. 1 shows axonometric view of the arrangement of gears in unseen transmission housing of the bicycle and of the lodgement of the axle fork from one side.
- Picture No. 2 shows axonometric view of the arrangement of gears in unseen transmission housing of the bicycle and of the lodgement of the axle fork from the opposite side.
- Picture No. 3 shows the side view of the transmission housing of the bicycle from the control side of the gear system.
- the gear system (Pictures Nos. 1 and 2) of the bicycle is arranged in the transmission housing 8 (unseen on the picture) which forms the part of the bicycle frame.
- This transmission housing 8 shelters the crankshaft 6 and the shaft 4 bearing the case 5 of chain wheels.
- the sliding of the chain pinion 2 on the crankshaft 6 is being ensured by the axle fork 1 with tension pulley 2 of the primary chain 18.
- the axle fork I is lengthwise rearrangeable on the guide link 3 arranged between the crank 4 of the case 5 and the crankshaft 6 in a parallel way with them.
- One of chain wheels of the case 5 is partly belted by the primary chain 18 by the position of the tension pulley 1 on the guide link 3 which is being ensured by the sliding mechanism.
- the sliding mechanism is formed by the axle ⁇ 2 set in the transmission housing 8 in a parallel way with the guide link 3.
- the peg 9 formed on the axle fork 1 enters into the groove K> (see Picture No. 1). ,
- the shift cylinder 13 arranged outside the transmission housing 8 and' provided 6y flie set of cutouts on its outside perimeter is firmly connected with the one face of t ⁇ e case ' Hl Two from these cutouts are contacted by first ends * of mutually counter spring-loaded "- elg. by the spring 20 - two-ply swivelling levers 14 set on the outside of the transmission housing 8 with second ends connected with control cables 15, 16 linked to the control lever situated e.g. on handle-bars of the bicycle.
- the cutouts in the shift cylinder 13 are formed e.g. by the gaps between axially oriented pegs
- Hold-down mechanism 19 (see Picture No. 3) arranged at the perimeter of the shift cylinder
- the spiral groove 10 is advantageously provided with the set of surfaces with the zero grade the number of which is equal to the number of chain wheels of the case 5.
- the two-ply lever 14 is tilted in the direction S2 by pulling- of the control cable 15 by the . control lever on handle-bars in the direction Sl (see Picture No. 3). Due to this the first end of the two-ply lever 14 turns the shift cylinder 13 in the direction S3. Because the shifting cylinder 13 is firmly connected with the case H, the case H is also turned due to thisT Turning of the case H begins through the spiral groove 10 axial sliding of the contacting peg 9 and also of the whole axle-fork 1 on the guide link 3. Together with the axle-fork 1 the
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- Transmission Devices (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The axle fork (1) of the gear system is provided with the peg (9) trenching on the spiral groove (10) formed on the outside surface of the case (11) by the rotary way due to the revolving mechanism set on the axle (12) arranged in the transmission housing (8) in a parallel way with the guide link (3). The revolving mechanism is formed by the shifting cylinder (13) connected firmly with one face of the case (11) and provided with the set of cutouts on its outside perimeter two of which are contacted by first ends of mutually counter spring-loaded two-ply swivelling levers (14) set on the side of the transmission housing (8) with second ends connected with control cables (15, 16) linked to the control lever. The spiral groove (10) has got constant grade and is provided with the set of surfaces with the zero grade the number of which is equal to the number of chain wheels of the case (5). The cutouts are formed by the gaps between axially oriented pegs (17) arranged in regular distances at the outside perimeter of the shifting cylinder (13) and every first end of two-ply levers (14) has the form of the spring-loaded snap.
Description
Title of the invention: Gear system
Technical Field
The invention is related to the gear system for the gear system of the bicycle arranged in the transmission housing on the crossbar in the area of the crankshaft.
Prior State of the Technology
Actually known gear system for the gear system of the bicycle arranged in the transmission housing on the crossbar in the area of the crankshaft consists (see WO 02/08050) of the axle fork with the tension pulley with the push lodgement on the guide link arranged between the shaft of the case and the crankshaft and in a parallel way with them with the assignation for the sliding of directly free-running chain pinion partly belted by the primary chain on the crankshaft and also for the shifts of the primary chain from one chain wheel of the case to the side chain wheel of the case with the linear motion of the axle fork on the guide link moved by the pull of any one from two control cables where any one is mounted to the one side of the axle fork.
The disadvantage of this relatively simple gear system with two control cables is: A) for every change of the gear there is necessary to outdo substantial friction forces in the own gear system but also friction forces between pulled second control cable and its conduh;'B) there are not exact adjustments of positions of the axle fork in relation to chain wheels of the ca&e and that is why there can be crossings of the primary chain between chain pinion and chain wheel of the case.
The Essence of the invention
Abovementioned insufficiencies are eliminated by the gear system for the gear system of the bicycle arranged in the transmission housing oiTthe crossbar in the area of the crankshaft by this invention the principle of which lies in the fact that, the axle fork is provided with the peg trenching on the spiral groove formed on the outside surface of the case by the rotary way due to the revolving mechanism set on the axle arranged in the transmission housing in a parallel
way with the guide link; that the spiral groove has got constant grade and is provided with the set of surfaces with the zero grade the number of which is equal to the number of chain wheels of the case; and that the revolving mechanism is formed by the shifting cylinder connected firmly with one face of the case and provided with the set of cutouts on its outside perimeter two of which are contacted by first ends of mutually counter spring-loaded two-ply swivelling levers set on the side of the transmission housing with second ends connected with control cables linked to the control lever.
It is necessary to see the essential fact for the gear system by this invention - the cutouts are formed by the gaps between axially oriented pegs arranged in regular distances at the outside perimeter of the shifting cylinder and every first end of two-ply Jevers has the form of the spring-loaded snap.
Another essential fact for this solution of the gear system is based on the shifting cylinder with the latching device oriented vertically to its axe of the rotation and formed by the spring- loaded snap.
The advantages of the gear system by this invention are: A) its easy and simple operating due to the elimination of the part of friction forces; B) the elimination of the possibility of the crossing of the primary chain due to the exact definition of particular positions of the axle fork.
Overview of the Pictures of the Drawing
The example of the particular performance of the gear system by this invention will be described in the following section with references to included drawings. Picture No. 1 shows axonometric view of the arrangement of gears in unseen transmission housing of the bicycle and of the lodgement of the axle fork from one side. Picture No. 2 shows axonometric view of the arrangement of gears in unseen transmission housing of the bicycle and of the lodgement of the axle fork from the opposite side. Picture No. 3 shows the side view of the transmission housing of the bicycle from the control side of the gear system.
An Example of the Embodiment of the Invention
The gear system (Pictures Nos. 1 and 2) of the bicycle is arranged in the transmission housing 8 (unseen on the picture) which forms the part of the bicycle frame. This transmission housing 8 shelters the crankshaft 6 and the shaft 4 bearing the case 5 of chain wheels. On the
crankshaft 6 there is axially movably set chain pinion 7 belted partly by the primary chain 187
The sliding of the chain pinion 2 on the crankshaft 6 is being ensured by the axle fork 1 with tension pulley 2 of the primary chain 18. The axle fork I is lengthwise rearrangeable on the guide link 3 arranged between the crank 4 of the case 5 and the crankshaft 6 in a parallel way with them. One of chain wheels of the case 5 is partly belted by the primary chain 18 by the position of the tension pulley 1 on the guide link 3 which is being ensured by the sliding mechanism.
The sliding mechanism is formed by the axle \2 set in the transmission housing 8 in a parallel way with the guide link 3. On the axle Y2 there is revolvingly set the case ϋ which has spiral groove K) with constant grade on its surface. The peg 9 formed on the axle fork 1 enters into the groove K> (see Picture No. 1). ,
The shift cylinder 13 arranged outside the transmission housing 8 and' provided 6y flie set of cutouts on its outside perimeter is firmly connected with the one face of tήe case ' Hl Two from these cutouts are contacted by first ends* of mutually counter spring-loaded "- elg. by the spring 20 - two-ply swivelling levers 14 set on the outside of the transmission housing 8 with second ends connected with control cables 15, 16 linked to the control lever situated e.g. on handle-bars of the bicycle.
The cutouts in the shift cylinder 13 are formed e.g. by the gaps between axially oriented pegs
17 arranged in regular distances at the outside perimeter of the shifting cylinder !3_and every first end of two-ply levers 14 has the form of the spring-loaded snap.
Hold-down mechanism 19 (see Picture No. 3) arranged at the perimeter of the shift cylinder
13 vertically to the axe of its rotation formed by the spring-loaded snap is also the part of the gear system.
The spiral groove 10 is advantageously provided with the set of surfaces with the zero grade the number of which is equal to the number of chain wheels of the case 5.
The change of the gearing is being ensured by the gear system of this invention by the following way:
The two-ply lever 14 is tilted in the direction S2 by pulling- of the control cable 15 by the. control lever on handle-bars in the direction Sl (see Picture No. 3). Due to this the first end of the two-ply lever 14 turns the shift cylinder 13 in the direction S3. Because the shifting cylinder 13 is firmly connected with the case H, the case H is also turned due to thisT Turning of the case H begins through the spiral groove 10 axial sliding of the contacting peg 9 and also of the whole axle-fork 1 on the guide link 3. Together with the axle-fork 1 the
The list of used relation marks:
1-axle fork
2-tension pulley
3-guide link
4-shaft
5-case
6-crankshaft
7-chain pinion
8-transmission housing
9-peg
10-spiral groove
11-case
12-axle
13-shifting cylinder
14-two-ply lever
15-fϊrst control cable
16-second control cable
17-peg
18-primary chain
19-latching device
20-spring
Sl-direction
SlO-direction
S2-direction
S3-direction
SXl-direction
Claims
1. The gear system of the shifting system of the bicycle arranged in the transmission housing (8) on the bicycle frame in the area of the crankshaft (6) formed by the axle-fork (1) with the tension pulley (2) and set movably on the guide link (3) arranged between the shaft (4) of the case (5) and the crankshaft (6) and in parallel way with them and intended for sliding of the axially movably set chain pinion (7) belted partly by the primary chain (18) on the crankshaft (6) and for shifting of the primary chain (18) from one chain wheel of the case (5) to the side chain wheel of the case (S) by two control cables (15,16), charakterized in that, the fact that the axle fork (1) is provided by the peg (9) contacting the spiral groove (10) formed on the outside surface of the case (11) returnably through returning mechanism set on the axle (12) arranged in the transmission housing (8) in a parallel way with the guide link (3).
2. The gear system by the claim 1, charakterized in that, the fact that the spiral groove (10) has got constant grade and is provided with the set of surfaces with zero grade the number of which is equal to the number of chain wheels of the case (5).
3. The gear system by the claim.1, charakterized in that, the fact that the returnable mechanism is formed by the shifting cylinder (13) connected firmly with one face of the case (11) and provided with the set of cutouts on its outside perimeter, two of which are contacted by first ends of mutually counter spring-loaded two-ply swivelling levers (14) set on the side of the transmission housing (8) with second ends connected with control cables (15, 16) linked to the control lever.
4. The gear system by the claim 3, charakterized in that, the fact that the cutouts are formed by the gaps between axially oriented pegs (17) arranged in regular distances at the outside perimeter of the shifting cylinder (13) and every first end of two-ply levers (14) has the form of the spring-loaded snap.
5. The gear system by the claim 3, charakterized in that, the fact that the shifting cylinder (13) has got the latching device (19) oriented vertically to its axe of the rotation and formed by the spring-loaded snap.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZPV2006-256 | 2006-04-21 | ||
| CZ20060256A CZ301301B6 (en) | 2006-04-21 | 2006-04-21 | Gearshift mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007121690A1 true WO2007121690A1 (en) | 2007-11-01 |
Family
ID=38519722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CZ2007/000029 WO2007121690A1 (en) | 2006-04-21 | 2007-04-20 | Gear system |
Country Status (2)
| Country | Link |
|---|---|
| CZ (1) | CZ301301B6 (en) |
| WO (1) | WO2007121690A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958627A (en) * | 2017-04-27 | 2017-07-18 | 红河红冠科技有限公司 | High-performance New energy electric multi-speed transmission |
| ES2684528A1 (en) * | 2017-03-30 | 2018-10-03 | César ROJO VIDAL | Bicycle transmission system (Machine-translation by Google Translate, not legally binding) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4129198A1 (en) * | 1991-09-03 | 1993-03-04 | Heinz Mueller | Derailleur gearchange for bicycle - has sprockets on rear block moved to change gear, instead of chain |
| WO2002008050A1 (en) * | 2000-07-21 | 2002-01-31 | Van Der Linde Freddy | Gear for a bicycle |
| EP1462354A2 (en) * | 2003-03-26 | 2004-09-29 | HONDA MOTOR CO., Ltd. | Transmission apparatus for a bicycle |
| EP1580114A2 (en) * | 2004-03-24 | 2005-09-28 | Shimano Inc. | Bicycle transmission |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4115311B2 (en) * | 2003-03-26 | 2008-07-09 | 本田技研工業株式会社 | Bicycle transmission |
-
2006
- 2006-04-21 CZ CZ20060256A patent/CZ301301B6/en not_active IP Right Cessation
-
2007
- 2007-04-20 WO PCT/CZ2007/000029 patent/WO2007121690A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4129198A1 (en) * | 1991-09-03 | 1993-03-04 | Heinz Mueller | Derailleur gearchange for bicycle - has sprockets on rear block moved to change gear, instead of chain |
| WO2002008050A1 (en) * | 2000-07-21 | 2002-01-31 | Van Der Linde Freddy | Gear for a bicycle |
| EP1462354A2 (en) * | 2003-03-26 | 2004-09-29 | HONDA MOTOR CO., Ltd. | Transmission apparatus for a bicycle |
| EP1580114A2 (en) * | 2004-03-24 | 2005-09-28 | Shimano Inc. | Bicycle transmission |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2684528A1 (en) * | 2017-03-30 | 2018-10-03 | César ROJO VIDAL | Bicycle transmission system (Machine-translation by Google Translate, not legally binding) |
| CN106958627A (en) * | 2017-04-27 | 2017-07-18 | 红河红冠科技有限公司 | High-performance New energy electric multi-speed transmission |
| CN106958627B (en) * | 2017-04-27 | 2023-09-12 | 重庆康昌机械制造有限公司 | High-performance new energy electric multi-gear transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CZ301301B6 (en) | 2010-01-06 |
| CZ2006256A3 (en) | 2007-10-31 |
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