JPH03231088A - Bicycle device which efficiently converts leg force to turning moment - Google Patents

Abstract

PURPOSE:To permit the drive of a bicycle with high efficiency by constituting a bicycle device so that one pedal is speedily returned to an operation start position during the time when the other pedal is operated, by the combination of the left and right crank gears, left and right constant speed gears, constant speed gear and a drive gear. CONSTITUTION:The left and right crank gears 1 and 9 revolved through the left and right cranks 19 and 20 are formed from the left and right crank large diameter gears 2 and 10 and the left and right crank small diameter gears 3 and 11, and the left and right constant speed gears 5 and 13 are formed from the left and right constant speed large diameter gears 6 and 14 and the left and right constant speed small diame ter gears 7 and 15. The left and right crank large diameter gears 2 and 10 are meshed with the left and right constant speed small diameter gears 7 and 15 during the time when a pedal is operated, and the left and right crank small diameter gears 3 and 11 are meshed with the left and right constant speed large diameter gears 6 and 14 during the return of the pedal to an operation start position from a terminal position. Then, a drive gear 16 is meshed with a constant speed gear 18 fixed on a constant speed gear shaft 8, together with the left and right constant speed gears 5 and 13.

Description

[Detailed Description of the Invention] (a) Industrial Application Field This invention enables one pedal of a bicycle to be pedaled at the same time as the other pedal is pedaled, and leg power can be efficiently converted into rotational force. Regarding devices that can.

Part C) Conventional technology The rotational force of a bicycle is zero when the leg force is applied vertically to the crankshaft, and gradually increases as it tilts toward the pedaling side, until the crank becomes perpendicular to the vertical line of the crankshaft. It reaches its maximum at the end of the crankshaft.After that, it gradually becomes smaller until it reaches zero just below the crankshaft.

This means that when pedaling a bicycle, the crank is tilted slightly from directly above the crankshaft to the pedaling side (the pedaling position).
I started sawing it, and the crack was just below the crankshaft, slightly Ll.
It is reasonable to end the row at the end of the row.

With conventional pedals, the positions of both pedals are above -tl[l, so when one pedal is finished pedaling, the other pedal does not return to the starting position, but returns to the starting position from that position. Until then, the pedal is simply moving, and during that time, the application of rotational force to the crankshaft is interrupted.

(c) Problems to be solved by the invention This invention rotates both pedals independently, and when one pedal reaches the rowing end position, the other pedal rotates quickly and returns to the rowing start position. Since it is possible to start rowing immediately, it is possible to continuously apply rotational force to the crankshaft without interruption.

(d) I! ! + Means for Solving the Problems The present invention provides a means for solving the problem, in which the left and right crank gears 1.9, left (i stop the constant speed 5.13,
It consists of a constant speed gear 18υ and 16 drive teeth.

Left, right crack tkIllf+, 9 is left, right crack>
Taiyo T8m 2.10 and Kotobuki, right crank small diameter gear 3
The left and right constant speed gears 513 consist of left and right constant speed large diameter t8 heavy 6.14 and left and right constant speed small diameter tlJ wheels 7.15. .10, pedal 111 left, right constant speed small diameter gear 7.15 so that it meshes with I: put the teeth) i, right crank 2 ts small diameter gear 3,
II is provided with teeth so as to mesh with the right constant speed small diameter gear 6.14 until the pedal returns from the end of the pedal to the beginning of the pedal. Match constant speed gear +8 and drive gear 16. The left and right constant speed gears 5.13 and the constant speed gear port are constant speed tl! It sticks to Kotsumugi 8. The drive gear shaft 17 is circular and the right crank II! Let 112 pass through the stables.

(e) Operation When the left pedal is pedaled, the left crack gear l is rotated through the left crack 19, and this rotational force is applied to the left constant speed gear 5 constant speed tooth east 18 - drive tooth 16 - human gear? 1 and drives the chain, while the left constant speed gear 5- also drives the constant speed tM wheel 13.
- is transmitted to the right crank mti9 in the order of τ- through the right crank 20, and returns the right pedal to the push-out position. Next, when the right pedal is pedaled, the right crank gear 9 is rotated via the right crank 204, and this rotational force is transmitted to the right constant speed f11, the constant speed gear 18, and the drive gear! 6-Large gear 21 is transmitted in order to drive the chain/, while right constant speed gear) 3-Left γ speed gear 5-Left crank tooth weight 1 order J is transmitted to left crank j9
This is to return the left pedal to the push-out position.

The kick-out position 173 - the kick-out angle (the angle of the crack from the cut-out position to the saw-end position) can be changed by changing the position and number of teeth of each gear.

(f) Example Each figure shows the position of sawing out the lead 1IiI3 passing through the cracked pongee.
Set the position tilted from 1 to the rowing side, and set the rowing angle to 1.
It was set at 44 degrees. According to this example, the ratio of the speed of the pedal pedal to the speed of the pedal returning to the other pedal position is 5.

The ratio of the size of each mi is the left and right crank large diameter teeth ff12
, lo-25 + left, right crank 204-3, +1-20
: Left % Right constant speed large j\ tooth 1G + 4-30: Left, right constant speed small diameter gear 7.1525: For drive tooth 16. Constant speed tooth east +8-25
There is υ.

(G) Effects of the Invention As explained above, this invention allows you to start pedaling the other pedal at the same time as you finish pedaling one pedal, so leg power can be efficiently converted into rotational force, especially when facing a headwind. The effect is great when the load is large, such as when climbing uphill.

In the example, a chain drive was used, but a constant speed tooth! It is also possible to make a no-theft drive by rubbing 18 with a bevel gear or the like.

[Brief explanation of drawings]

Figure 1 is rowing J] shi, Figure 2 is the figure with ll, Figure 3 is the figure with 1jm, Figure 4 is the end of rowing.
FIG. Left crank gear, 2. Left crank large-diameter tooth pawl, 3. Left crank shoe →#lll', 4-Left crank. riyo, 5 h constant speed tooth groove, G left constant speed large diameter register small, 7 〃
Constant speed small diameter tooth 7ji, 8 ヱspeed tooth ring, 9 right crank tooth 4
'(,10 right rank large diameter toothworm l rank small diameter pottery city,
12 Rightward Ranik shaft, +3 Right constant speed gear, +4 Right constant speed small diameter gear, +5 Right constant speed small diameter gear, 16 Drive gear, 1
7 Drive # city shaft, +8 constant speed tII, 9 left crank, 20 right crank, 21 large gear, 22 gear case

Claims (1)

[Claims] A device for quickly returning one pedal to the pedaling position while pedaling the other by a combination of left and right crank gears 1, 9, left and right constant speed gears 5, 13, constant speed gear 18, and drive gear 16.