31 results about "Pedal cycle" patented technology

Torque is measured in the chain wheel (50) of a pedal cycle by a non-contacting magnetic-based transducer. A magnetising source (70), a D.C. type of source such as a permanent magnet is positioned adjacent the chain wheel (50) to induce an arcuate magnetised zone (72) in the wheel (50) as it rotates. The zone emanates a torque-dependent magnetic-field component that is detectable by a sensor (74) that follows the source (70) in the direction of rotation. By having the magnetising source (70) continually in position the arcuate tranducer zone (72) is refreshed on each rotation of the chain wheel. The nature of the pulsating torque in the chain wheel due to the exertion of the rider and its relationship to the angle of the pedal cranks is discussed with a preference for positioning the source (70) and sensor (74) at positions of minimum and maximum exerted torque respectively. If the induced arcuate magnetisation is interrupted (76) pulses for measuring rotational speed are obtainable. The torque measurement is of general application to torque in sprocket wheels or gear wheels.

An electrically assisted cycle kit 50 for fitting to a pedal cycle 2 comprises an electric motor 58 for assisting pedal cycle motion, a battery 52 for powering the motor 58, and a controller 60 for controlling the drive of the motor 58. A gear tooth sensor 65 provides a gear motion signal indicative of the speed/acceleration of motion of gear teeth 94 and valleys 95 of a gear sprocket 32 of the cycle. The controller controls the drive of the motor 58 in dependence on the gear motion signal.

The present invention is one kind of speed varying mechanism installed to cycle for altering the speed via changing the pedaling direction. The speed varying mechanism consists of one circular gear box installed to the left side of the pedal shaft and with punched casing, middle shaft, two gears in the tooth ratio of 5 to 3, two oppositely installed overrunning clutches on the same shaft and two transition gears. The present invention has the advantages of altering speed only by changing the pedaling direction, simple structure, reasonable design, easy manufacture and low cost, and is suitable for pedaled cycles and wheeled chair.

The method involves a step of measurement of a bearing force (Fp_n) on a pedal (1) of the pedal set (4), different from the useful effort, exerted by the individual during a pedalling cycle, a step of determination of a maximum (max(Fp_n)) of the bearing force measured during the pedalling cycle (CF_j), and a step of estimation of a mean useful effort exerted by the individual during said pedalling cycle from the maximum of the bearing force determined and with the aid of a predetermined correlation function between a maximum bearing force during a pedalling cycle and a mean useful effort in said cycle.

The invention discloses a frame structure for a pedal motorcycle, which comprises a frame main girder, a lower right pipe and a lower left pipe which are symmetrically arranged, and a right pipe and a left pipe which are symmetrically arranged, wherein front ends of the right pipe and the left pipe are connected through a stamping part with a U-shaped cross section; the opening of the stamping part with the U-shaped cross section is downwards; the stamping part with the U-shaped cross section coats the right pipe and the left pipe into the stamping part and connects the right pipe and the left pipe into a whole; and a left reinforcement tube and a right reinforcement tube for connecting the left and the right are welded between the front end of the right pipe and the U-shaped bottom of the lower right pipe, and between the front end of the left pipe and the U-shaped bottom of the lower left pipe respectively. The frame structure for the pedal motorcycle reduces the difficulty and the cost of the manufacturing technology of a vehicle frame, has better strength, is more convenient to assemble, provides a larger space for assembling an engine, can meet the space demand for assembling the engine without performing secondary processing on the vehicle frame, and particularly further reinforces the rigidity and the strength of the frame by making the lower left pipe and the lower right pipe form a quadrangular frame structure through arrangement of the left reinforcement tube and the right reinforcement tube.

There is provided a method of operating a pedal cycle and a pedal cycle INC.orporating the same. The pedal cycle has an electro-mechanical drive arrangement INC.luding a continuously variable ratio transmission system having an input which is mounted to rotate about the axis and an output connected to rotate with a hub member, the transmission system comprising an epicyclic gear set INC.luding a sun gear in mesh with a plurality of planet gears mounted to rotate about respective planet shafts carried by a common carrier, which is mounted to rotate with the input about the axis, the planet gears being in mesh with an annulus gear, which is connected to rotate with the hub member. Only the sun gear may be connected to rotate a rotor of an electrical machine or an additional machine may be provided. The electrical connections of the stator of the electrical machine are connected to a controller; the method may INC.lude the step of applying a time division multiplexed control algorithm tothe electrical machine, wherein the time division multiplexed control algorithm alternates between a first control mode in which current generated by the electrical machine is monitored to infer torque applied to the crank arms of the cycle and a second control mode in which the current in the input electrical machine is controlled using the inferred torque.

The invention discloses a multi-mode gait rehabilitation training method. The method comprises the following step: through selection of a controller, driving a power device to drive pedals to execute gait movement in the following mode, in a walking mode, the pedals circularly move to form a walking track; in a sliding step mode, the pedals circularly move to form a sliding step track, and the sliding step track is elliptical; in a step mode, the pedals circularly move to form a step track, the step track is of an ellipse, and a long axis of the ellipse is obliquely arranged; in a stepping mode, the pedals circularly move to form a stepping track, and the stepping track is in a shape of a vertical straight line segment; and in a center-of-gravity transfer mode, the pedals circularly move to form a center-of-gravity transfer track, the center-of-gravity transfer track is in a shape of a vertical short line segment, and the short line segment is shorter than the straight line segment. The invention further discloses a rehabilitation training device using the multi-mode gait rehabilitation training method. According to the method and the device, five modes of gait rehabilitation training are provided, so that lower limbs of a user can be comprehensively trained, and the rehabilitation training effect is better.

A drive system for a cycle in the form of a pedelec (10) has an input (2) that receives drive from a pedal (40) of the cycle and rotates about axis (1). An output (100) rotates about axis (1) to drive a wheel (30) of the cycle. An electrical machine (5, 6) provides motor drive to the output (100). A drive train receives drive from the electrical machine (5, 6) and pedal (40) and transmits drive to the output (100). The drive train comprises first and second epicyclic gear sets EP-1, EP-2, each of which comprises a sun gear (11, 21), a planet carrier (13, 23), a plurality of planet gears (12, 22) and an annulus gear (14, 24). Both annulus gears (14, 24) are connected to the output (100) to rotate with it. Both sun gears (11, 21) are driven by the electrical machine (5, 6). The first epicyclic gear set EP-1 transmits drive from its sun (11) to its annulus (14) with its planet carrier (13) in a fixed position. The second epicyclic gear set EP-2 transmits drive from a pedal (40) to its annulus (24) via its planet carrier (23). Optionally, electrical assistance may be provided both when the cyclist is pedalling and when the cyclist is not pedalling.

A pedal driven cycle comprising a belt drive connecting a power input sprocket to a driven sprocket along a chain line; an outer protective belt drive cover plate having a footprint which substantially coincides with a side profile of the belt drive along at least a major portion of its length of travel so that the outer cover plate does not extend beyond an outer surface of the belt drive; and fixtures for mounting the outer protective belt drive cover plate to the cycle in parallel with the chain line and laterally spaced apart from a side edge of the belt drive to provide a clearance, with fore and aft adjustment.

A pedal driven cycle comprising a cantilevered frame member coupled to a power input sprocket and a driven sprocket; a belt drive connecting the power input sprocket to the driven sprocket; and a side mounted rear wheel releasably coupled to a multi-speed gear hub that is coaxial with the side mounted rear wheel, wherein the multi-speed gear hub is coupled to the driven sprocket.

The foldable electric pedal cycle has small size, light weight and one no handlebar structure. It includes one front pedal and one back pedal; one frame and one back wheel between the front pedal and the back pedal; one battery box, one controller, one alarm and one stand rack on the frame; one motor and one brake in the center of the back wheel; one front wheel below the front pedal for direction controlling; two additional wheels connected to the back pedal for balance; controlling wire, braking wire and other parts. It may be changed into one cycle for riding or one drawn bogie for easy carrying.

The powered pedal cycle has small size, light weight and one no handlebar structure. It includes one front pedal and one back pedal for the user to stand on; one front wheel below the front pedal for controlling direction; one back wheel below the back pedal capable of controlling direction too; one frame and two middle wheels connected with one shaft between the front pedal and the back pedal; one power unit fixed on the frame and one brake in one side of the frame; and hand controlling wire, braking wire and other parts.