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Patent Searching and Data


Title:
BICYCLE TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/056084
Kind Code:
A1
Abstract:
A bicycle transmission system having a disengaging coupling mechanism. The transmission system comprising a driving element (7) placed within the bicycle frame (22), a driven element (10) placed within the bicycle rear wheel and an assembling axle (13) for fixing the wheel to the frame (22) and transferring the drive torque. The coupling mechanism can have a quick release lock comprising a swivel axle (15), a lever (16), a pin (17) and mandrels (19, 32, 33, 34). The bicycle chain travels within the frame (22) and a gearing mechanism can be located in the bottom bracket. The rear wheel hub (10), axle (13) and freewheel (31) are placed coaxially and their location can be adjusted by rotating eccentric freewheel sockets (9, 12, 24).

Inventors:
ZIELIŃSKI, Grzegorz (Brochocim 25, Trzebnica, PL-55-100, PL)
Application Number:
PL2010/000113
Publication Date:
May 12, 2011
Filing Date:
November 08, 2010
Export Citation:
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Assignee:
ZIELIŃSKI, Grzegorz (Brochocim 25, Trzebnica, PL-55-100, PL)
International Classes:
B60B27/02; B62K19/30; B62K19/44; B62K25/02; B62M9/16
Foreign References:
EP1153827A1
FR2912109A1
EP1582450A2
GB2400084A
US20060119172A1
US20060108859A1
FI16746A1935-09-20
EP0191710A2
GB285118A
US20060108858A1
DE8438112U1
PL59223U1
PL284863A11991-10-21
Attorney, Agent or Firm:
KAMIŃSKI, Piotr (KAMIŃSKI SOBAJDA & PARTNERS, ul. Jasna 13, Piaseczno n. Warsaw, PL-05-502, PL)
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Claims:
Claims

1. The bicycle transmission system characterised in that it comprises a disengaging coupling mechanism whose driving element is placed in the bicycle frame, while the driven element is placed in the bicycle wheel, the frame and the wheel being two separate assemblies.

2. The bicycle transmission system characterised in that it comprises a disengaging coupling connector that couples the wheel with the bicycle frame and transfers the drive torque from the bicycle frame to the wheel, the bicycle frame and the wheel being two separate assemblies, the wheel being stabilized in the frame by the assembling axle which is a third component of the mechanism, and after the assemblies have been put together, fastening forms in which the disengaging coupling connector that couples the wheel with the bicycle frame locks the mutual rotation of the driving element in the frame and that of the driven element in the wheel, and thus transmits the drive torque; the disengaging coupling connector can be placed in the axle, wheel or frame of the bicycle and can also be featured as an assembling axle.

3. The bicycle transmission system according to claim 2, characterised in that the rotor (7) of the freewheel is the driving element of the disengaging coupling, while the hub (10) is a driven element of the disengaging coupling and assembling axle (13) is a connector of the disengaging coupling that locks the mutual rotation of the rotor and hub.

4. The bicycle transmission system according to claim 2, characterised in that the gear (8) is the driving element of the disengaging coupling, while the freewheel rotor (7) is a driven component of the disengaging coupling and assembling axle (13) is a connector of the disengaging coupling that locks the mutual rotation of the rotor and hub.

5. Bicycle transmission system according to claim 2, characterised in that the gear (8) is the driving element of the disengaging coupling, while the freewheel rotor (7) is a driven element of the disengaging coupling and the connector of the disengaging coupling (11) is a frame assembly component that locks the mutual rotation of the gear and the freewheel rotor.

6. Bicycle transmission system according to claim 2, characterised in that the gear (8) is the driving element of the disengaging coupling, while the freewheel rotor (7) is a driven component of the disengaging coupling and the connector (11) of the disengaging coupling is a wheel assembly component that locks the mutual rotation of the gear and the freewheel rotor.

7. Bicycle transmission system according to claim 2, characterised in that the freewheel rotor (7) is the driving element of the disengaging coupling, while the hub (10) is a driven component of the disengaging coupling and the connector (11) of the disengaging coupling is a frame assembly component that locks the mutual rotation of the freewheel rotor and hub.

8. Bicycle transmission system according to claim 2, characterised in that the freewheel rotor (7) is the driving element of the disengaging coupling, while the hub (10) is a driven component of the disengaging coupling and the connector (11) of the disengaging coupling is a wheel assembly component that locks the mutual rotation of the freewheel rotor and hub.

9. Bicycle transmission system characterised in that it comprises the assembling axle mounted in a disengaging manner (20) for fixing the rear wheel in the bicycle frame, the frame (22) of the bicycle with the transmission, the axle assembly (20) and the wheel with the hub (10) are three separate components,

the wheel is stabilized in the bicycle frame by the axle assembly and the axle assembly is stabilized in the frame by a locking mechanism consisting of a blocking stabilizing axle in one of the frame hooks, a quick release lock on the opposite side of the axle, consisting of a swivel axle (15) and a lever (16) and a mandrel (17) that connects the quick release lock with the blocking, in a closed position of the axle assembly, the lever ( 16) is stabilized by pushing in axle plug (14) and the rotation axes of mandrels (34, 33 and 19) are contained in a one plane which prevents self-acting opening of the locking mechanism.

10. Bicycle transmission system according to claim 9, characterised in that the assembling axle (20) transmits the drive torque.

11. The bicycle transmission system characterised in that it comprises the assembling axle mounted in a disengaging manner (20) for fixing the rear wheel in the bicycle frame,

the frame (22) of the bicycle with the transmission, the quick release axle (20) and the wheel with the hub (10) are three separate components, the drive torque is transmitted from the bicycle frame onto the wheel by the assembling axle (20) which also stabilizes the wheel in the bicycle frame while assembling axle is stabilized in the frame by a locking mechanism consisting of a blocking (18) stabilizing axle in one of the frame hooks, a quick release lock consisting of a swivel axle (15) and a lever (16) on the opposite side of the axle and a mandrel (17) that connects the quick release lock with the blocking,

in the closed position of the axle quick release, the lever (16) is stabilized by pushing in the axis plug (14) and the rotation axes of mandrels 1, 3 and 4 (19, 33 and 34), are contained in a one plane which prevents self-acting opening of the locking mechanism, the chain (29) travels within the bicycle frame, the axle bracket (28) and output gear (27) of the gear shifting mechanism (30) are located coaxially and move relative to each other with a variable angular velocity ratio depending on the gear used,

the hub (10) axle assembly (13) and freewheel (31) are placed coaxially, the location of the hub ( 10), axle assembly (20) and freewheel (31) is set eccentrically by rotating the eccentric freewheel sockets (2, 12) where the freewheel is mounted in one of the frame hooks (1) and the left hook eccentric (24), which is a socket of the axle assembly in the other frame hook (2).

Description:
Bicycle transmission system

The subject of the invention is an enclosed bicycle power transmission system with a rear wheel mount mechanism.

A bicycle hub with a bilateral transmission system with two rolling bearing cups is known from the description of a utility model PL 59223 U and are characterized by the fact that the left cup has a left-hand thread on its working surface; the left-hand thread notches with the bearing surface at the diameter fault, and the outer diameters of the cup casing are the same as the right cup casing.

From description of the patent application PL 284 863 known are the bicycle and the bicycle wheel, particularly eccentric, containing the outer and inner rim interconnected by a series of spokes. The wheel hub is mounted in the sleeve with a short tube. The position of the guide plate with a threaded hole is fixed relative to the inner rim. The inner rim comprises a second threaded hole. The pin is coupled to the threaded holes. One end of the pin is pivotally mounted inside the short tube, the rotation of the knob provides relative motion between the pin and the guide plates to determine the eccentric position of the hub.

The essence of the solution is that the bicycle transmission system comprises a disengaging coupling driving element of which is placed in the bicycle frame and the driven element is placed in the bicycle wheel. The fiame and wheel are two separate assemblies. The wheel is mounted to the fiame with the assembling axle, which is the third component of the system.

After assembling said components, a fastening is formed which blocks the mutual rotation of the driving element of the coupling and the driven element of the coupling, which allows torque to be transferred from the frame to the wheel, and at the same time the assembling axle stabilizes the wheel in the bicycle frame.

The driving element of the coupling is connected to the driven element of the coupling either directly or via a connector, which transfers the torque of power transmission system from the coupling driving element to the driven element.

The connector may be present as a separate subcomponent of the system, e.g. assembling axle or constitute one of the parts in the frame subcomponent or the wheel subcomponent.

The assembling axle is stabilized in the f ame by a locking mechanism consisting of a blocking which stabilizes the axle in one of the frame hooks, a quick release lock on the opposite side of the axle and pins connecting the quick release lock with the blocking. In the closed position of quick release axle, the lever is stabilized in the axle plug by pushing in and rotation axes of the mandrels are contained in one plane, which prevents self-opening of the locking mechanism.

The system is also equipped with a unidirectional clutch (freewheel), which can be placed in the frame, wheel or the connector.

The system comprises a gearshift system placed in the bicycle frame.

The axle bracket and output gear of the gearshift mechanism are located coaxially and move towards each other with a variable angular velocity ratio, depending on the gear used.

The power transmission system with the chain are placed inside the bicycle frame, which provides the transmission system with insulation from external factors.

Inside the frame there is oil that lubricates the chain automatically. The hub, the assembling axle and the freewheel are placed coaxially. The location of the wheel is set eccentrically, which enables the wearing chain to be tightened.

Such a system provides insulation of the power transmission system elements from external factors and is reliable, durable and easy to use and the use of an assembling axle with a quick release mechanism allows quick and easy assembly and disassembly of the wheel in the frame, which is advantageous especially in case of performance sports.

The object of the invention is shown in the embodiment in the drawing, in which fig. 1 shows a perspective view of the power transmission system in the frame fig. 2 shows a top view of the power transmission system enlcosed in the bicycle frame and reveals the rear wheel hub

fig. 3 shows a spatial cross section of the disengaging coupling elements which transfer the power

fig.4 shows a vertical section of the rear wheel fastening mechanism

fig. 5 shows a horizontal section of the rear wheel fastening mechanism

fig. 6 shows a spread-out spatial view of the rear wheel fastening mechanism elements fig. 7A shows a solution in which the disengaging coupling connector is a separate subcomponent of the system and acts as the assembling axle: fig.7 Al shows the assembled system and the disengaging coupling elements fig. 7A2 shows the spread-out system components and the disengaging coupling elements

fig.7 A3 shows the disengaging coupling elements

figures 7 B show a solution in which the disengaging coupling connector is one of the elements in the subassembly of the frame:

fig.7B 1 shows the assembled system and the disengaging coupling elements fig. 7B2 shows the spread-out system components and the disengaging coupling elements

fig. 7 B3 shows the disengaging coupling elements

figures 7C show a solution in which the disengaging coupling connector is one of the elements in the subassembly of the wheel:

fig.7.C.1 shows the assembled system and the disengaging coupling elements fig. 7C2 shows the spread-out system components and the disengaging coupling elements

fig. 7 C3 shows the disengaging coupling elements

figures 11, 12 and 13 show a solution in which the disengaging coupling connector is an element in the subassembly of the wheel and the freewheel is located in the subassembly of the frame:

fig. 11 shows the assembled system and the disengaging coupling elements fig. 12 shows the spread-out system components and the disengaging coupling elements

fig. 13 shows the disengaging coupling elements

In the embodiment, the power transmission system comprises a gearshift 30 with a axle bracket 28, the gearshift output gear mechanism 27, with chain 29, which transfers power to the rear wheels via freewheel gear 6, then the latches 21, then the freewheel rotor 7 being the disengaging clutch driving element, then the assembling axle 13 which is the disengaging coupling connector, and hub 10, which is a part of the wheel and the disengaging clutch driving element.

The freewheel gear is mounted on the freewheel rotor by means of bearings 23 and the freewheel rotor is mounted in the freewheel socket by means of bearings 3,4.

Power transmission system in the wheel axle (coaxially) has an assembling axle 20 fastened in disengaging manner to the locking mechanism constructed of a blocking 18 connected to the axle by means of a mandrel 32 and stabilizing the axle in one of the hooks 2, the quick release lock consisting of a swivel 15 and a lever 16, and a mandrel 17 which connects the swivel with the blocking.

Freewheel 31 in the right hook and the eccentric of the left hook 24 in the left hook 2, the assembling axle 20 and the hub 10 are placed coaxially.

The wheel position is set eccentrically by rotating the eccentric elements 9, 12 and 24. The eccentric element 24 includes the left hook bearing 35 which includes a sleeve 5. The bearing is embedded in the left hook eccentric 24 by means of thrust rings 25 and is covered with a lid 26.

In order to attach the wheel to the bicycle frame 22, a hub 10 is placed coaxially to the freewheel 31 between the left hook 2 and the right hook 1 and then the assembled assembling axle 20 in an open position is slid and after which the assembling axle 20 is stabilized by setting the lever 16 in a closed position and by sliding the lever 16 into the axle plug 14.

In closed position of quick release axle, the lever is stabilized by pushing in and the rotation axes of mandrels 34, 33 and 19 are contained in one plane which prevents self-opening of the locking mechanism.

In other embodiment, gear 8 is the driving element of the disengaging coupling while rotor 7 of the freewheel is a driven component of the disengaging coupling while assembing axle 13 is a connector of the disengaging coupling that locks the mutual rotation of the rotor and hub. (Fig7Al,7A2,7A3)

In another embodiment of the invention, gear 8 is the driving element of the disengaging coupling while rotor 7 of the freewheel is a driven component of the disengaging coupling while disengaging coupling 11 is a part of the frame assembly that locks the mutual rotation of the gear and freewheel rotor. (Fig 7B1,7B2, 7B3).

In another embodiment of the invention, gear 8 is the driving element of the disengaging coupling while rotor 7 of the freewheel is a driven component of the disengaging coupling and the connector 11 of the disengaging coupling is a part of the wheel assembly that locks the mutual rotation of the gear and freewheel rotor. (Fig 7C1, 7C2,7C3)

In another embodiment of the invention, freewheel rotor 7 is the driving element of the disengaging coupling while hub 10 is a driven component of the disengaging coupling while the connector 11 of the disengaging coupling is a part of the frame assembly that locks the mutual rotation of the freewheel rotor and hub. (Fig 8, 9,10)

In another embodiment of the invention, freewheel rotor 7 is the driving element of the disengaging coupling while hub 10 is a driven component of the disengaging coupling while the connector 11 of the disengaging coupling is a part of the wheel assembly that locks the mutual rotation of the freewheel rotor and hub. (Fig 11,12,13)

Index

1. right frame hook

2. left frame hook

3. bearing in freewheel socket - left

4. bearing in freewheel socket - right

5. sleeve in left bearing

6. freewheel gear

7. freewheel rotor

8. drive gear

9. freewheel socket -left part

10. hub

11. disengaging coupling connector

12. freewheel socket - right part

13. assembling axle

14. axle plug

15. swivel axle

16. lever

17. pin

18. blocking

19. mandrel nr 1 - connecting blocking with a pin

20. assembled assembling axle 21. latches

22. bicycle frame

23. bearing in freewheel

24. left hook eccentric

25. mounting rings

26. cover

27. output gear of gearshift system

28. axle bracket

29. chain

30. gearshift system

31. assembled freewheel

32. mandrel nr 2 - connecting blocking with axle

33. mandrel nr 3 - connecting pin with swivel axle

34. mandrel nr 4 - connecting swivel axle with axle plug

35. left hook bearing