The pedal lever valoprovoda

 

(57) Abstract:

The pedal lever valoprovoda contains a lever with a pedal, made in the form of pivotally interconnected large and small levers. Big and small levers interact using a ratcheting mechanism. Great lever during movement extends a small lever. Improved operational properties by improving facilities and increasing speed. 1 Il.

The invention relates to velotron, in particular to designs sports, travel, tourism and cargo bikes. Known designs of bikes that contains a lever that interacts with the pedal, made in the form of a plate, using a ratchet mechanism. (See patent Switzerland N 540812 A, 15.10.73).

A disadvantage of the known constructions is the complexity of Biking on a bad road, the uphill, with load and low speed. The disadvantages include the fact that the legs of the cyclist are always in an awkward hook position and get tired quickly.

The purpose of this invention is to eliminate these drawbacks.

This goal is achieved by the fact that p is dejstvuusih between themselves by means of ratchet mechanism. While the main big lever valoprovoda longer small pedal lever, creating a significant gain in strength. The trajectory of the feet will be ellipsometry.

The drawing shows a General view of the pedal lever.

The pedal lever valoprovoda contains large main arm 1 and the small pedal lever 2, the transmitting power of the legs on the shaft valoprovoda 3. Axial bolt 4 is wrapped all the way into the main lever 1. Then on the axial bolt 4 tighten the washer 5 with the teeth of the ratcheting mechanism. To ensure that the washer does not rotate, it is now the stopper 6. Then, on the axial bolt 4 with the bearing 7 is put the pedal lever 2. Next put the washer 8, which is fixed locking nut 9.

It should be noted that the pedal lever 2 should be rotated on the bearing between its ends by washers 5 and 8. The pedal 10 with the pedal bracket 11 is located on the axis 12, which is wrapped in the pedal arm 2. The pedal bracket 11 is fastened by bolts 13 to 14. The axis 12 is now the stopper 15. Dog ratchet 16 is located on a small pedal lever and engages with the teeth of the washer 5. The teeth at the bottom of the washer is missing.

Does the pedal lever velop the high lever 1 and small pedal lever 2 is closed between parts ratcheting mechanism, and thus, increased lever to transmit the force of the muscles of the rider the best.

The trajectory of the legs will go on rotational "and". Small pedal lever 2 will be leading up to the passage of the bottom point and1, after which he becomes a slave (because it comes after pressing the right pedal). After joining pedal to the point "and2"relatively slow riding, the cyclist by foot through the pedal bracket 11, while moving the leg forward and up, raises the pedal lever 2 and again puts the pedal lever 2 in the first initial position on the trajectory. The cycle repeats, etc.

2. With a more rapid rotation of the pedals on the lifting of the pedal arm 2 there is not enough time and he will rise slightly. The trajectory of the legs will go on rotating. In this case, the lever transmission power leg will increase slightly, but will still be increasing in the positive direction.

3. When riding a bike under the wind or downhill, i.e., when the fast rotation of the pedals, lift up the lever 2 is not absolutely required, and the rotation of the pedals will be thus, as on a normal road bike, but the trajectory for noghanian, characterized in that the lever is made in the form of pivotally interconnected large and small levers interacting with the specified ratcheting mechanism.

 

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FIELD: transport engineering; bicycles; foot crank mechanisms.

SUBSTANCE: left-hand crank 3 is provided with square hole for mounting on shaft 1 and cylindrical groove with thread mating with hollow bolt 2 freely fitted on shaft 1. Said bolt thrusts through its left-hand end face surface against support bead of shaft. With left-hand crank 3 tightened by hollow bolt 2, shaft 1 is fitted in bearing unit, and left-hand bearing 8 prevents turning out of hollow bolt 2. Thread is made on outer surface of shaft 1 from right-hand side of shaft on which union nut 4 is installed to support right-hand bearing 9. Body of nut is made in form of cylindrical bushing of which driving sprockets 5 are mounted for free rotation. Bead of union nut 4 limits axial displacement of sprockets 5. Groove with thread is made in sprocket hub 6, and thread is made on outer surface of hub of right-hand crank 7 to provide possibility of tightening of right-hand crank 7 provided with square hole for mounting on shaft 1 by freely rotating hub 6 of sprockets which plays the part of nut.

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