EP1879789A1 - A bicycle rear wheel hub for eliminating the dead point during pedalling - Google Patents

A bicycle rear wheel hub for eliminating the dead point during pedalling

Info

Publication number
EP1879789A1
EP1879789A1 EP06733576A EP06733576A EP1879789A1 EP 1879789 A1 EP1879789 A1 EP 1879789A1 EP 06733576 A EP06733576 A EP 06733576A EP 06733576 A EP06733576 A EP 06733576A EP 1879789 A1 EP1879789 A1 EP 1879789A1
Authority
EP
European Patent Office
Prior art keywords
hub
dead point
bicycle
torsion spring
kinetic
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.)
Ceased
Application number
EP06733576A
Other languages
German (de)
French (fr)
Inventor
Bostjan Mahnic
Primoz Gorjan
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.)
EKSTUNDO d o o
Original Assignee
EKSTUNDO d o o
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 EKSTUNDO d o o filed Critical EKSTUNDO d o o
Publication of EP1879789A1 publication Critical patent/EP1879789A1/en
Ceased 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/10—Rider propulsion of wheeled vehicles involving devices which enable the mechanical storing and releasing of energy occasionally, e.g. arrangement of flywheels
    • 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks

Definitions

  • the invention detailed in this document concerns the development of a new rear wheel hub for assisting the propulsion of cycles both in the sports arena and domestic use.
  • the outer hub rotates as normal on the central axis pin. This is then connected to an inner hub via a torsion spring. This spring stores energy generated through each pedal stroke which is then released at the point when the pedal stroke diminishes during the 'dead point'.
  • An inner hub is connected via the torsion spring to an outer hub on which the gear wheels are fixed.
  • the inner and outer hubs are connected with bearings allowing the torsion spring to move independently from the outer hub.
  • a torsion spring is fixed in the centre of the inner hub with a lever anchored at an angle to the axle, another lever rests on a buttress screw on the outer hub.
  • the torsion spring which strains and relaxes, allows movement of the inner hub independently of the outer hub and thus abolishes the dead point of the driving gear.
  • Fig. 2 side section of the rear wheel hub
  • Fig. 3 partial section with a review of the set up of spring levers (8, 11 ).
  • the inner hub (1 ) is connected via the torsion spring (7) to the outer hub (3) on to which the gear wheels are attached (2).
  • the inner and outer hubs are connected with the use of bearings (6) which allows the torsion spring (7) to operate independently from the outer hub.
  • the torsion spring (7) connects with the centre of the hub via a lever which is anchored at a suitable angle onto the axle (5) with a groove in the inner hub and another lever (11) which leans onto the buttress screw (10) on the outer hub (1).
  • the inner and outer hubs are connected via a torsion spring (6) which strains and relaxes while allowing movement of the inner hub (3) independently of the outer hub (1 ) and thus the dead point of the driving gear is abolished.
  • the torsion spring (7) is primed with the forward motion of gear wheel (2).
  • the inner hub (3) starts to push over the buttress screw (10) while the outer hub (1) connects to the lever (8).
  • the inner hub (3) connected in the opposite direction as the gear wheel is turned.
  • the torsion spring (7) is unwound during the pedalling of the driving gear until the point of the dead point.
  • the torsion spring which has engaged with the lever (8) and anchored into the groove (9) of the inner hub, begins to release its kinetic energy against the buttress screw (10) which is fixed on to the outer hub (1) and gives continued forward motion eliminating the dead point.
  • the driving force is given by the accumulated kinetic energy in the torsion spring which drives the outer hub for the period of the dead point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention laid out in this document describes details concerning the development of a new rear wheel hub for assisting the propulsion of cycles both in the sports arena and domestic use. The 'E-HUB' . The technical problem solved with the 'E-HUB' is the 'dead point' , the period during pedalling when the forward energy drops between the engagement of the bike drive mechanism. With the construction of a moving hub it is possible to achieve higher speeds and more constant momentum with the same energy output of the rider. The inner hub (3) rotates as normal on the central axis pin (5) . This is then connected to an outer hub (1) via a torsion spring (7) . This spring (7) stores energy generated through each pedal stroke which is then released at the point when the pedal stroke diminishes during the 'dead point' .

Description

A BICYCLE REAR WHEEL HUB FOR ELIMINATING THE DEAD POINT DURING PEDALLING
The invention detailed in this document concerns the development of a new rear wheel hub for assisting the propulsion of cycles both in the sports arena and domestic use. The 1E-HUB'.
Until now attention had been paid to how the rear hub could move with minimum resistance upon its axis. The technical problem solved with the 1E-HUB' is the 'dead point', the period during pedalling when the forward energy drops during the engagement of the bike drive mechanism, (see picture 1.) With the use of a kinetic hub it is possible to achieve higher speeds and more consistent momentum with the same energy output of the rider which naturally enhances performance.
The outer hub rotates as normal on the central axis pin. This is then connected to an inner hub via a torsion spring. This spring stores energy generated through each pedal stroke which is then released at the point when the pedal stroke diminishes during the 'dead point'.
To date, the only known solution for the dead point of the driving gear was given by patent no. EPO148192 (see picture 2). The mechanism which abolishes the dead point of the driving gear is composed of a clamp, (1 ) which is fixed to the rear fork (2, 3) and is slightly longer than the horizontal distance from one driving gear (8) to another (9). The extreme parts of the driving gear (8, 9) are connected to the clamp with two elastic strings (4, 7) on both sides of the bicycle. These two strings or elastic cables are connected to the driving gear (5, 10) with clips (6) which are fixed onto the inner part of each pedal next to the driving gear (8, 9).
An inner hub is connected via the torsion spring to an outer hub on which the gear wheels are fixed.
The inner and outer hubs are connected with bearings allowing the torsion spring to move independently from the outer hub.
A torsion spring is fixed in the centre of the inner hub with a lever anchored at an angle to the axle, another lever rests on a buttress screw on the outer hub.
The torsion spring, which strains and relaxes, allows movement of the inner hub independently of the outer hub and thus abolishes the dead point of the driving gear.
Fig. 2: side section of the rear wheel hub;
Fig. 3: partial section with a review of the set up of spring levers (8, 11 ).
Important details concerning movement of the hub. (see picture 2).
The inner hub (1 ) is connected via the torsion spring (7) to the outer hub (3) on to which the gear wheels are attached (2). The inner and outer hubs are connected with the use of bearings (6) which allows the torsion spring (7) to operate independently from the outer hub. The torsion spring (7) connects with the centre of the hub via a lever which is anchored at a suitable angle onto the axle (5) with a groove in the inner hub and another lever (11) which leans onto the buttress screw (10) on the outer hub (1).
The inner and outer hubs are connected via a torsion spring (6) which strains and relaxes while allowing movement of the inner hub (3) independently of the outer hub (1 ) and thus the dead point of the driving gear is abolished.
The torsion spring (7) is primed with the forward motion of gear wheel (2). The inner hub (3) starts to push over the buttress screw (10) while the outer hub (1) connects to the lever (8). The inner hub (3) connected in the opposite direction as the gear wheel is turned. The torsion spring (7) is unwound during the pedalling of the driving gear until the point of the dead point. As the area of dead point moment is reached the torsion spring, which has engaged with the lever (8) and anchored into the groove (9) of the inner hub, begins to release its kinetic energy against the buttress screw (10) which is fixed on to the outer hub (1) and gives continued forward motion eliminating the dead point.
During the dead point of the driving gear the driving force is given by the accumulated kinetic energy in the torsion spring which drives the outer hub for the period of the dead point.

Claims

PATENT CLAIMS
1. A kinetic bicycle hub that eliminates the dead point found during the pedalling of a bicycle, comprising an inner hub containing a torsion screw which is levered against a buttress screw located on the outer 'carriage hub'. The inner hub is able to move independently from the outer hub. The inner hub connects with the outer hub via the torsion spring which is ductile and independent from the outer hub. The gear wheel is fixed to the outer hub using screws.
2. A kinetic bicycle hub as claimed in claim 1 , wherein a inner hub rotates freely against an outer hub with the use of bearings which allow the torsion spring to operate independently of the outer hub.
3. A kinetic bicycle hub as claimed in claim 1 and 2, wherein a torsion spring is fixed to the centre of the hub with a lever that is anchored at a suitable angle into the axle with a groove in the inner hub and with another lever which pushes against a screw, or similar buttress, on the outer hub.
4. A kinetic bicycle hub as claimed in claim 1 and 2 and 3, wherein an inner and outer hub are connected with bearings which allows the movement of the inner hub independently of the outer hub and the dead point of the driving gear is abolished.
5. A kinetic bicycle hub, substantially as herein described, with reference to any one embodiment shown in the accompanying drawings.
EP06733576A 2005-05-12 2006-05-12 A bicycle rear wheel hub for eliminating the dead point during pedalling Ceased EP1879789A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI200500137A SI22053A (en) 2005-05-12 2005-05-12 Movable wheel hub
PCT/SI2006/000019 WO2006121415A1 (en) 2005-05-12 2006-05-12 A bicycle rear wheel hub for eliminating the dead point during pedalling

Publications (1)

Publication Number Publication Date
EP1879789A1 true EP1879789A1 (en) 2008-01-23

Family

ID=36940856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06733576A Ceased EP1879789A1 (en) 2005-05-12 2006-05-12 A bicycle rear wheel hub for eliminating the dead point during pedalling

Country Status (3)

Country Link
EP (1) EP1879789A1 (en)
SI (1) SI22053A (en)
WO (1) WO2006121415A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8240690B2 (en) 2007-04-13 2012-08-14 Peter Lawrence Wills Human energy transduction and storage system having a one-way clutch
SI23244A (en) * 2009-12-22 2011-06-30 Ekstundo D.O.O. Device for maintaining and transmission of energy by a cyclist on thedriving wheel during pedalling

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR560355A (en) * 1922-12-26 1923-10-03 Improvements in propellant mechanisms actuated by muscle energy and more particularly applicable to cycles or other vehicles
FR626510A (en) * 1926-06-10 1927-09-08 Spiral spring and winding mechanism for use in cycles and various vehicles
WO1997020726A1 (en) * 1995-12-07 1997-06-12 Florin Niculescu Crankset with no neutral position
DK0912392T3 (en) * 1996-07-23 2001-06-11 Gerhard Hilber Pedal alarm drive for a bicycle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006121415A1 *

Also Published As

Publication number Publication date
WO2006121415A1 (en) 2006-11-16
SI22053A (en) 2006-12-31

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