JPH02391Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" This invention relates to a motorized bicycle using a foot pedal drive and a motor drive.

``Prior art'' The name "moped bicycle" gives the image of a bicycle that runs by combining the power of a prime mover and human power, but in reality, it is rare that a bicycle runs by combining the two powers, and in most cases. At present, it relies on the power of the prime mover. The reason for this is mainly the difficulty of combining two different powers into one. For example, if we consider the example of a two-seater bicycle, the gears directly connected to the foot pedals are connected by a chain, so that the two pedals rotate simultaneously. Therefore, if two people are rowing, they must pedal at the same speed. The same goes for moped bicycles, where the prime mover puts out power at 10km/h and can be reached by human power.
Km/h speed total 15Km/h
I can't run at that speed.

``Problems to be solved by the invention'' The purpose of this invention is to obtain a high degree of driving force by combining the driving force of the foot pedal and the driving force of the prime mover.

``Means for solving the problem'' This proposal involves installing a support shaft on the frame, fixing a pair of bevel gears facing the support shaft in the axial direction and loosely supporting them in the rotational direction, and meshing between both bevel gears. A plurality of small bevel gears are supported by the inner ring by the shaft in the radial direction of the support shaft, and the inner ring and the tire supporting outer ring are connected on the vehicle to form a driving wheel, and a sprocket provided on one of the bevel gears. The bicycle is constructed by a motorized bicycle in which a motor drive chain is run around the wheel, and a foot pedal drive chain is run around a sprocket provided on the other bevel gear via a one-way clutch.

``Operation'' Therefore, when the motor is started by stepping on the foot pedal without rotating it, the motor drive chain is rotated via the centrifugal clutch, and one bevel gear is rotated via the sprocket, the other bevel gear stops. As a result, the small bevel gear rotates on its own axis and revolves, and due to the revolution, the drive wheel rotates at a reduced speed of 1/2 rotation of one of the bevel gears.
When the foot pedal is rotated in this state, the other bevel gear rotates in the same direction via the chain and sprocket, so the revolution speed of the small bevel gear increases and both driving forces are combined. When the prime mover is stopped and only the foot pedal is rotated, only the other bevel gear rotates, the small bevel gear rotates, decelerates to 1/2 and revolves, and the drive wheel rotates at a reduced speed.

"Embodiment" A boss portion 4 of a pair of bevel gears 3, 3' facing a support shaft 2 installed on frames 1, 1 of a motorized bicycle.
4' is fixed in the axial direction and fitted and supported so as to be freely movable in the rotational direction. A plurality of small bevel gears 5, 5, 5 meshing with both gears 3, 3' are interposed between these bevel gears 3, 3', and the shafts 6 of these small bevel gears 5, 5, 5 are It is provided toward the radial direction of the support shaft 2 and supported by the inner ring 8 of the drive wheel 7 . Drive wheel 7 is inner wheel 8
and a tire support outer ring 9 are connected by a vehicle 10, a motor drive chain 12 is wound around a sprocket 11 provided on one boss portion 4, and a one-way free rotation clutch 13 is connected to the other boss portion 4'. The foot pedal drive chain 15 is attached to the sprocket 14 provided in the
It is something that is passed around. In addition, what is shown by 16 in the figure is the above-mentioned tire.

Therefore, by stopping the prime mover and rotating the foot pedal, the drive wheel 7 is rotated at a reduced speed due to the rotation of the small bevel gear 5 and the 1/2 deceleration revolution of the other bevel gear 3'. Further, the foot chain is stopped, the prime mover is driven, and the drive wheel 7 is rotated at a reduced speed due to the rotation of the small bevel gear 5 and the 1/2 deceleration revolution of one of the bevel gears 3. Also, by simultaneously rotating the driving machine and the foot pedal, both bevel gears 3 and 3' are rotated, and the small bevel gear 5 rotates and revolves, thereby causing the drive wheel 7 to rotate both bevel gears 3 and 3. The rotational speed increases due to the resultant rotation of .

"Effects" Since the present invention is configured as described above, the drive wheel 7 can be selectively rotated by not only the motor and the foot pedal but also the combined rotational force of both, thereby improving the driving efficiency of the motorized bicycle. can do.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a drive wheel of the motorized bicycle of the present invention, and FIG. 2 is a longitudinal sectional view of the same wheel. 1... Frame, 2... Support shaft, 3, 3'... Bevel gear, 5... Small bevel gear, 6... Shaft, 8... Inner ring,
9...Tire support outer wheel, 10...Vehicle, 7...Drive wheel, 11, 14...Sprocket, 12...
Motor drive chain, 13...One-way clutch, 1
5... Foot pedal drive chain.

Claims (1)

[Scope of utility model registration request] A support shaft is installed on the frame, and 1 is opposite to the support shaft.
A set of bevel gears is fixed in the axial direction and loosely supported in the rotational direction,
A plurality of small bevel gears meshed between both bevel gears are supported by the inner ring by the radial axis of the support shaft, and the inner ring and the tire supporting outer ring are connected by the vehicle to form a drive wheel, and one of the small bevel gears is This motorized bicycle has a motor drive chain running around a sprocket provided on one bevel gear, and a foot pedal drive chain running around a sprocket provided on the other bevel gear via a one-way clutch.