Abstract:
In a four-cycle, single-cylinder engine, a crankshaft is rotatably supported at a crankcase through a pair of bearings, and a driving wheel for wrapping connection and for transmitting rotational power of the crankshaft to a camshaft of a valve-moving device and a driving gear for transmitting the rotational power of the crankshaft to an oil pump are fixed to the crankshaft. A driving gear (127) is provided at an outer side of one (48) of bearings (47, 48), and at an outer side of the driving gear (127), there is provided a driving wheel (78) for wrapping connection. This enables the width of an engine to be reduced in a direction along the axis of the crankshaft.
Abstract:
An electrically powered vehicle, for example a bicycle, has a motor, controller and power supply contained within a wheel compartment. A cylindrical stator frame is fixed on the wheel axle, with an inner surface of the stator frame defining a space for housing the power supply and controller circuitry. A plurality of electromagnet stator segments are mounted on an outer surface of the stator frame. A cylindrical rotor frame is coupled to the axle through bearings. An inner surface of the rotor frame is coupled to the axle through bearings. An inner surface of the rotor frame supports a plurality of permanent magnets that surround the stator segments to form a radial air gap therebetween. Mounted to the outer surface of the rotor frame by appropriate supporting structure is a vehicle tire.
Abstract:
Motorized wheels in a wheelchair or other light vehicle are each mounted on an axle for limited rotation relative to a secondary connection to the frame of the vehicle which incorporates a sensor (59) providing feedback which controls the motor according to torque sensed through the secondary connection. The motor (17) and associated gearing and control circuitry (60) are housed within a wheel hub of which a drum (16) supporting a wheel rim is supported at its inner surface on multiple bearings (14) spaced around its periphery.
Abstract:
The Belt Drive system for electric bicycle includes a plurality of motors (N) disposed in face-to-face configuration having their shafts in confronting axial alignment joined by a common spool cog. Furthermore, the system includes means for securing the plurality of motors (N) to a motor rack (H). Furthermore, the system includes a wheel cog (D), over which the cog belt (G) is placed so that it spans, partially, the circumference of both the wheel cog (D) and the common spool cog (F) on the motor shafts (P). The belt drive system also includes a plurality of batteries (L), a battery rack (K), switching means to control the motors (N). The system provides a rider reliable, long range transportation in any type of weather, and on pavement, gravel, dirt and chip trails. The system is adaptable so that it may be installed on any bicycle.
Abstract:
A power-assisted bicycle which is not different, in structure and appearance, substantially from a general bicycle and low in cost and weight, wherein a drive sprocket (11) is disposed at the part of a chain where a main sprocket (2) is engaged with the chain (12) so that the sprocket (11) is engaged with the chain together with the main sprocket (2) from the inside of the chain, one tooth (2a) of the main sprocket (2) and one tooth (11a) of the drive sprocket (11) are fitted together into one opening part (12b) of the chain, the pitch of the teeth (11a) of the drive sprocket (11) and the pitch of the teeth (2a) of the main sprocket (2) are formed to be almost the same and the rotating shafts of both sprockets are disposed roughly in parallel with each other in order to maintain this fitted condition at all times, and an electric motor (37) is connected to the rotating shaft (35a) of the drive sprocket (11) through a speed reduction mechanism (35) including a one-way clutch.
Abstract:
The invention relates to a device for the motorization of a bicycle, comprising a propulsion unit consisting of an electric motor (1) which is fed by a battery (2), means for fixing said unit (1,2) to the frame (C) of the bicycle and transmission means acting between the shaft (M) of the motor and the rear wheel (R). The invention is characterized in that said transmission means comprise a cylindrical roller (3) which is connected to the shaft (M) of the motor and provided with a peripheral friction drive region; the fixing means comprise a cylindrical pivot (4) which is mounted underneath the frame (C) parallel to the axis of the pedals and bottom bracket bearing assembly (P) and configured in such a way that it can detachably co-operate in free rotation with a sleeve (5) which is borne by a suspension arm (6) which is integral with the propulsion unit (1,2), whereby the cylindrical roller drive region can rotationally rest against the rear wheel (R).
Abstract:
The level of a force or torque (T) exerted by a rider on the pedals (27) of a bicycle (1) is calculated by a signal-processing device (40) on the basis of a measurement signal which is obtained from a sensor (50) which is attached to the frame (10) of the bicycle in order to measure the deformation which occurs in the frame. The sensor (50) may comprise one or more strain gauges. Furthermore, the invention describes a way of actuating a hub motor (45) on the basis of the chain force. This arrangement always offers the considerable advantage that a single sensor (74; 50) is sufficient, and that this sensor can be mounted on the same bicycle component as that to which the control member (40) is attached, namely the rear axle (6) itself or the inner race (71) of the wheel bearing (7) which is fixed to the rear axle. A bending sensor (50) which is mounted on the rear axle measures the bending which occurs in the rear axle itself as a result of the pedalling force. A pressure sensor (74) which is mounted in the wheel bearing (7) measures the compressive forces caused in the wheel bearing by the chain force.
Abstract:
The invention concerns a vehicle control device comprising: an electromechanical transducer (22); an electronic control circuit (18); a human-computer interface (19, 20) connected to the electronic circuit (18) and comprising means (20) for controlling the distribution of energy supplied by the electric power source (17) to the transducer (22). The invention is characterised in that the interface (19, 20) further comprises control means (19) for selecting among a plurality of parameters defining the distribution control mode of the power supplied by said source (17) to the transducer (22), on the basis of data provided by the circuit (18). The invention is applicable to bicycles equipped with an auxiliary power supply.
Abstract:
The invention relates to a bicycle provided with an electric motor (1) which can be optionally connected to the rear bicycle wheel (11) or to other positions. The power supply device, namely powerpacks/batteries (5), are arranged at the center of gravity of the bicycle, namely in the supporting lower tube (4) of the bicycle frame such that a lowest possible center of gravity results. The lower tube can be equipped with batteries by bending the rear wheel which is mounted in a hinged manner (8). The power supply device cannot be observed by third parties since the appearance of the bicycle is not altered by the powerpack.