Abstract

11Rx222RxRX22) from the difference computed in routine 206.

IPC Classes  ?

• B62J 45/411 - Torque sensors
• B62M 6/45 - Control or actuating devices therefor
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts

Abstract

Force measurement sensor which comprises a peripheral portion (34), a central portion (35) and a first frame (33) connecting an upper section (342) of the peripheral portion (34) to an upper portion (352) of the central portion (35); said central portion (35) comprising a seat (351) intended to receive the outer ring of a bearing in order to mount a shaft in rotation about an axis Z, said frame (33) comprising a core (333) enclosed by two arms (331, 332) which are substantially parallel to one another, such that said upper section (342) of the peripheral portion (34), said upper portion (352) of the central portion (35) and the two arms (331, 332) form a parallelogram.

IPC Classes  ?

• B62J 45/411 - Torque sensors
• B62M 3/00 - Construction of cranks operated by hand or foot
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01L 3/14 - Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft

Abstract

Crankset assembly intended to be mounted on a bicycle, said assembly having at least one right-hand bearing (28) for mounting a crankset shaft (4) and a force sensor (3) positioned around the outer ring of said bearing (28); said force sensor comprising a peripheral portion (34), a central portion (35) and a top frame (33) connecting a top section (342) of the peripheral portion (34) to a top portion (352) of the central portion (35); said frame (33) being positioned at a diameter oriented along an axis (Y'), characterized in that the axis (Y') makes an angle (φ) of between 10° and 30° with the vertical axis (Y) and in that the top frame (33) is positioned behind the vertical axis (Y).

IPC Classes  ?

• B62M 3/00 - Construction of cranks operated by hand or foot
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof

Abstract

The invention relates to a mechanical reduction gear (5) comprising an outer ring (55) having a pitch circle diameter D55, at least one planetary gear (51, 52, 53, 51',52') having a pitch circle diameter D50 for rotating inside the ring with an excentricity "e" equal to half of the difference between diameter D55 and diameter D50; e = ½(D55 - D50); wherein said at least one planetary gear (51, 52, 53, 51',52') is maintained between the two flanges (573, 574, 573', 574') of a carrier (57); said at least one planetary gear (51, 52, 53, 51',52') has at least three circular openings (502) of diameter D502, each of them being traversed by a small shaft (575) of diameter D575 which is substantially equal to the diameter of the circular opening (502), D502, minus the double of the excentricity "e", D575 = D502-(2 x e); characterized in that the at least three small shafts (575) are mounted in a rotatable manner with respect to the carrier (57) with the aid of small bearings (576, 577) housed in said flanges (573, 574, 573', 574') of the carrier (57).

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 11/14 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
• F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

Abstract

Disclosed is a mechanical reduction gear (5) comprising a rotor (32), an outer ring gear (55) of pitch diameter D55, a planet carrier (57), which comprises at least one planet gear (51, 52, 53, 51', 52') of pitch diameter D50 designed to rotate inside the ring gear with an eccentricity of value "e" equal to half the difference between the diameter D55 and the diameter D50; e = ½(D55 - D50); the at least one planet gear being mounted so as to be able to rotate on the rotor (32) by means of an eccentric (315, 316, 317) comprising at least one cam (3101, 3102, 3171, 3172); the cam comprising an inner surface (31012, 31022, 31712, 31722) that is cylindrical of diameter D31 and an outer surface (31013, 31023, 31713, 31723) that is cylindrical of diameter D504, the diameter D504 being equal to the sum of the diameter D30 and double the eccentricity "e"; D504 = D31 + 2e.

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 11/14 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
• F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

Abstract

Assist device for a bicycle comprising a motor (3), a step-down gear (5), a free wheel (6) and a shaft (4) which rotates as one with a right crank (16, 161) and a left crank (16'); the motor (3) transmitting an assist torque to the shaft (4) by means of the free wheel (6); the device being designed to be received inside a pedal assembly casing (2); the shaft being rotatably mounted relative to the casing by means of two ball bearings (224, 234); the free wheel (6) consisting of a plurality of pieces (63, 61, 65) which are placed between the motor (3) and the shaft (4); the device further comprising a torque transmission ring (44, 44', 44", 44'") which allows one of the pieces of the free wheel (61, 65) to be secured to the shaft (4) or to one of the cranks (16, 16', 161); the transmission ring (44, 44', 44") being at least partially placed under one of the two ball bearings (224, 234). The torque transmission ring (44, 44', 44", 44'") produces a first mechanical connection with one of the pieces of the free wheel and a second mechanical connection with the shaft (4) or one of the cranks (16, 16', 161); at least one of these two mechanical connections can be released so as to withdraw the shaft (4). The transmission ring can be placed near the right crank (16, 161) or near the left crank (16'). The releasable mechanical connection may be the one which is located between the ring (44, 44') and one of the pieces (65) of the free wheel or the one which is located between the ring (44, 44') and the shaft (4) or the left crank (16').

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 11/14 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears

Abstract

Electric assist device for a bicycle comprising a shaft (4) coupled in rotation with a pair of cranks (16) and being able to be rotated in a positive direction by an electric motor (3), characterized in that a connection mechanism (8) is placed between the motor (3) and the shaft (4), which connection mechanism has at least three distinct states: State 1, termed assist state, in which the motor transmits a torque to the shaft (4) via a drive part which rotates at the same speed as the shaft (4); State 2, termed freewheel state, in which the rotation of the shaft (4) in the positive direction is greater than that of the drive part (56); State 3, termed disconnection state, in which a rotation in the positive direction or in the negative direction of the shaft (4) cannot cause the motor (3) to rotate. The connection mechanism can consist of a disengageable freewheel comprising means maintaining the freewheel blocking parts in a disengaged position, or it can consist of the combination of a conventional freewheel and of a clutch.

IPC Classes  ?

• F16D 41/30 - Freewheels or freewheel clutches specially adapted for cycles with hinged pawl co-operating with teeth, cogs, or the like
• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• F16H 15/20 - Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a conical friction surface externally co-operating with the outer rim of the member A, which is perpendicular or nearly perpendicular to the friction surface of the member B

Abstract

A system for storing and recovering energy characterised in that it comprises: - a shaft (6); - a wheel rim (3) or an element kinematically linked to the rim; - a chain for transmitting torque from a motor element (pedal/electric motor) to said rim (3) in such a way as to rotate the rim or the element that is kinematically linked thereto relative to said shaft (6); - an epicyclic gear train comprising first, second and third input/output parts; - a mechanism (5, 7) for the selective coupling of said second input/output part; and wherein the first input/output part is constituted by said rim (3) or by said element kinematically linked to the rim, and the third input/output part is an flywheel (1) that is rotatably mobile relative to the shaft (6) and capable of storing kinetic energy and then transferring it to the rim (3) or to said element that is kinematically linked thereto. The epicyclic gear train supports: - an energy storage configuration in which the second input/output part is immobilized relative to the shaft (6); and - an energy recovery configuration in which the second input/output part is immobilized relative to the chain for transmitting torque.

IPC Classes  ?

• B62M 1/10 - Rider propulsion of wheeled vehicles involving devices which enable the mechanical storing and releasing of energy occasionally, e.g. arrangement of flywheels

Goods & Services

Clothing and footwear for cycling.