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
  • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
  • B62M1/30—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by the use of intermediate gears
• • 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
  • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
  • B62M1/26—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by rotary cranks combined with reciprocating 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
  • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
  • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
  • B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels

Definitions

• the present invention relates to a transmission device for cycles and the like.
• the rear wheel is driven by a pedal consisting of a large gear tray, or driving plate, whose rotation is determined by cranks provided with pedals subjected to the action of the user, said plate driving, via a chain, a pinion keyed to the hub of said wheel by means of a freewheel device (the wheel being driven in only one direction).
• the object of the invention is to propose a transmission device that does not use a transmission chain.
• the driving plate and the driven pinion are mounted on the shaft of the wheel to be driven, said plate driving a pinion on the shaft of which is keyed a second pinion driving the usual pinion of the wheel through one or two planet gears in the direction of rotation of said plate.
• the plate is driven, with the interposition of a freewheel device, by, at least, a pinion engaged with a toothed sector situated at the end of an arm, articulated on the frame of the machine and comprising a lever extending beyond the axis of articulation on the end of which the user acts.
• FIG 1 shows a bicycle comprising the device of the invention
• FIG 2 is a view similar to Figure 1, showing an alternative embodiment
• FIG. 3 is a partial side view of the embodiment of FIG. 1;
• FIG 4 is a similar view to that 3 relating to the embodiment of Figure 2;
• FIG. 5 is, on a larger scale, a sectional view taken along the line V-V of FIG. 3.
• FIG. 6 is, on a larger scale, a sectional view taken along the line VI-VI of FIG. 4;
• FIG 7 is a view similar to Figure 5, showing an alternative embodiment
• FIG 8 is, on a larger scale, a sectional view taken along the line VIII-VIII of Figure 3 and limited to the section;
• FIG 9 is the left view of Figure 8, this figure includes derogations from the rules of the drawing which will be explained during the description;
• FIG 10 is a side view showing the possibility of adapting the device of the invention to the propulsion of a wheelchair.
• FIG 1 1 is a view similar to that 4, showing an alternative embodiment.
• a toothed plate 4 connected in rotation, by a freewheel device 5, to a toothed pinion 6.
• the pinion 6 is engaged with a toothed sector 7 located at one end of an arm 8 hinged at its other end to a shaft 9 carried by the frame 10 of the machine.
• the arm 8 extends beyond the axis of the shaft 9 into a lever January 1 having a pedal 1 2, at its free end, on which the user bears.
• a pedal 1 2 at its free end, on which the user bears.
• means are provided to limit the rotation of the lever 1 1 and to rotate it in the opposite direction in the absence of action on the pedal, these will be described later.
• the rotation of the plate 4 is transmitted to the usual pinion 13 driving the wheel 1 through a gear train 14-1 5-1 6- 17.
• the pinion 13 drives the wheel 1 by means of a freewheel device 18.
• the gears 14 and 1 5 are mounted on the same shaft and are connected in rotation.
• the planet gears 1 6 and 17 are interposed between those 1 3 and 1 5.
• two toothed sectors 7 and 7a are used, identical and arranged on either side of the plate 4, the sector 7a driving a pinion 6a by means of a freewheel device 5a of which effect is reversed with respect to the freewheel device 5.
• the plate 4 is driven in the same direction, alternately by the lever 1 1 and by that 1 1 a.
• the sectors 7 and 7a are "internal toothing", as is apparent from Figures 1 and 3, in particular, but they can be “external teeth”, which allows to save a satellite pinion, pinions 1 5 and 1 6 being replaced by a single pinion 19 (see Figures 2 and 4).
• FIG. 7 illustrates the possibility of producing a device with several speeds.
• the freewheel device 18 comprises two pinions 13a and 13b whose diameters are different.
• the pinion 1 5 is engaged with a pinion 1 6a, rotatably connected to a pinion 1 6b.
• a pair of pinions 1 7a-1 7b can be moved axially, the distance between the two gears of a pair being different the one separating the gears of the other pair.
• Each toothed arm connects to the corresponding lever through a hub respectively 20 and 20a, disposed on either side of the lower portion 21 of the frame 10 of the machine.
• the inner face of each hub has a serration 22 and 22a engaged with a conical gear 23 centered on the axis of the shaft 9 and carried by the part 21.
• each hub has a circular slot 24 centered on the axis of the shaft 9 in which extends a finger formed, for example, by the end of a fixed shaft 25 carried. by part 21.
• the device of the invention is offset with respect to the plane of the wheel, which can create an imbalance and involves bending the arms and levers so that the two pedals are arranged from and other of the vertical vertical plane of the machine.
• each tray is intended to use two trays, each of these and all the pinions for transmitting the movement to the wheel being disposed on either side of the plane of said wheel, each tray being associated with a single free wheel.
• the free wheel assigned to a plate being inverted with respect to that assigned to the other plate.
• This embodiment is particularly advantageous when the device of the invention is to be used on a machine such as a tricycle having two wheels on the same axis. It is the same when the device of the invention is used on a wheelchair as shown in Figure 10.
• the propulsion can be obtained by pushing or pulling on the levers 26.
• each lever may comprise the control handle of a braking device similar to those used on bicycles, the use of one of the brakes, combined with the actuation of the other lever, allowing to turn the chair.
• the device of the invention lends itself well to a motor, in particular to assist the user.
• a motor 27 preferably an electric motor, comprising a connecting rod 28 connected, via a link 29, to the lever 11.
• a similar device, marked 28a-29a, can be applied to the lever 11a.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=34953947

Family Applications (1)

Country Status (5)

Families Citing this family (7)

Family Cites Families (13)

• 2004
  • 2004-12-01 FR FR0412736A patent/FR2878498A1/fr not_active Withdrawn
• 2005
  • 2005-11-30 WO PCT/FR2005/002982 patent/WO2006059003A1/fr not_active Ceased
  • 2005-11-30 EP EP05823096A patent/EP1817223A1/de not_active Withdrawn
  • 2005-11-30 CA CA002588383A patent/CA2588383A1/fr not_active Abandoned
  • 2005-11-30 CN CN 200580041455 patent/CN101107159A/zh active Pending

Non-Patent Citations (1)

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