KR20110056579A - Bicycle equipped with an auxiliary power device - Google Patents

Abstract

PURPOSE: A bicycle with an auxiliary power device is provided to provide a user with a muscular motion effect by enabling the user to simultaneously lift up and rotate two pedals. CONSTITUTION: A bicycle with an auxiliary power device comprises a rear hub set and a pedal set. A spring is installed inside the rear hub set. The spring is molded in a coil shape. The rear hub set is composed of a hub spring(0), a hub shell(1), a hub axle(3), a hub axle disk(2), and a hub cap(11). The pedal set has a pedal lifter. The pedal lifter enables a user to lift up pedals using the top of the foot. Additional power, generated when the spring and the pedal lifter are pedaled, is effectively stored and emitted.

Description

Bicycle equipped with an Auxiliary Power Device

For the sake of detailed description, definitions of key terms related to the present invention will be provided.

① Power is the force that pedals the driver to roll the bicycle's wheels forward. It means the motive power for driving the bicycle.

In terms of ⑴ 用, this force acts as direct power, part of which is immediately rolling the wheel, but the ground friction of the two wheels due to the weight of the operator, air friction such as wind, and uphill Due to various frictional resistances that hinder running, such as obstacle friction on inclined and protruding surfaces, friction between the driving parts, etc. In the bicycle according to the present invention, which is lost as it is and uses a spring capable of storing elastic energy by the torsional action as an auxiliary power device, the torsion of the spring built into the bicycle is independent of the above frictional resistances made on the outside of the bicycle. Indirect power, which is stored by the repetitive action of reinstatement, then rolls the wheels with time differences acts as a wer).

On the exercise side, the two pedals are simultaneously pushed and lifted and revolving on two feet, more than in a conventional bicycle that only pedals. Can exert great force. In other words, in the bicycle according to the present invention, the concept of the force may be referred to as a pedal revolving power of a larger concept than the pedal pedaling power of only one step.

According to the bicycle magazine, etc., at 70 km / h, generally 70% of the force is lost in overcoming frictional resistance due to wheel grounding, air, and moving parts. It is said to be bigger. For example, as a term commonly used among bicycle enthusiasts, the term “bobbing” means that the suspension, which is a cushioning component, is operated due to the weight of the rider or the pedaling operation downward, so that the power transmission efficiency is lowered and a part of the force is applied. It refers to the phenomenon of being lost without working. This is a term that indicates the loss of force due to bicycle parts.

② Wheeling Power refers to the force that the force above is transmitted to the wheels as the driving force, which causes the bicycle to roll forward, which is stored by the torsional action of the spring and the torsion of the spring. It can be distinguished by indirect power rolling the wheel.

In the conventional bicycle, in the bicycle of the present invention, in the bicycle of the present invention is provided with a spring as an indirect auxiliary power unit, although only the remaining force, except for the part lost by various frictional resistances, acts as a direct power to roll the wheel. In conventional bicycles, the force lost due to frictional resistances is stored as elastic energy by the torsional action of the spring embedded inside the bicycle, regardless of the frictional resistance from the outside, and is released as indirect power over time. do. That is, the above-mentioned force is generally 100% does not act as a power, and is divided into two parts, such as a part that acts as direct power and a part that is lost in the conventional driving of the bicycle, but in the bicycle operation according to the present invention Almost 100% of N + acts as power without loss, but is only distinguished as direct power and indirect power.

(3 ) Torsion means torsional power in which the spring is provided as an auxiliary power device, in which some of the forces lost by various frictional resistances in the conventional bicycle operation are caused by the torsional action of the spring. By this, the power is deformed as elastic energy (= torsional stress) and stored in the spring itself.

The motive force, which primarily acts as a direct force, part of which rolls the wheel, but most of the force that cannot act as a direct force due to various frictional resistances is simply lost on a conventional bicycle, resulting in a waste of stamina. In the bicycle according to the invention, the torsional action of the spring deforms as elastic energy called torsion, stored in the spring, and released as auxiliary indirect power (Auxiliary Indirect Power), which rolls the wheel at a time difference. That is, torsion may be expressed as indirect power or auxiliary power or indirect auxiliary power. When the torsion is released as a power, it can be said that the torsion has become large enough to overcome the instantaneous frictional resistances that hinder the driving while cycling.

If you look at the relationship between these three terms,

In the conventional bicycle without the auxiliary power unit and the torsion power = 0 am = b pressing force, the bicycle according to the present invention the power torsion + = a pressing force and then, the pressing force in the end a> b pressing force or the pressing force a pressing force = b + torsion.

Therefore, in the bicycle driving according to the present invention, the driver can more effectively and effectively exert his limited physical strength as the wheel rolling power, without the physical strength lost by various frictional resistances as in the conventional bicycle.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear hub set and a pedal set of a bicycle, such as a general bicycle or an electric bicycle, provided with an auxiliary power device. The torsion and restoration thereof are similar to those of the mainspring provided in the analog clock. The key is to use coils as springs in the rear hub set to store or release energy as a function of auxiliary power.

Background Art [0002] In the conventional driving of a bicycle, the friction between two wheels due to the weight of the driver and the weight of the bicycle, air friction with the wind, etc., obstacle friction on an uphill slope and a projected surface, friction between the driving parts, and the like. Because of the various frictional resistances that impede the driver's force, some of the force acts as direct power to immediately roll the wheels, but the other force is lost as there is no device to store or retain him. There is a problem that the physical strength of the operator is wasted.

In addition, in terms of power exertion and exercise effect, in a conventional bicycle which only pedals one foot with one foot while alternating two feet and two pedals, the other foot and pedal cannot be utilized. There is a problem that the lack.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems in a conventional bicycle,

(1) In a conventional bicycle operation, a rear wheel of a bicycle has a coil spring capable of storing or releasing some of the forces lost by various frictional resistances as elastic energy (torsion) by repeated action of torsion and its original recovery. By embedding it in a set and using it as an auxiliary power unit,

② The pedal set includes a lifter that lifts the pedals, and the two pedals are simultaneously pressed, lifted, and rotated so that the driver effectively utilizes his limited physical strength and starts off with a 'quick force' at the start. It is intended to effectively improve the driving ability such as 'acceleration force' during acceleration and 'climbing force' during climbing.

The present invention relates to a rear hub set and a pedal set of a bicycle, such as a general bicycle and an electric bicycle, provided with an auxiliary power device.

① The rear hub set described above, as shown in Figure 2,

The central part is formed with a free length, wire diameter, and outer diameter of a suitable standard, and short 'a' hooks are formed at both ends in the outward direction of the free field, so that the two hooks move in opposite directions with respect to the winding direction. By the hook, the hub spring (0) is formed and built so that the repeated action of the torsion and reversal; And a hub axle (3) formed through the hub spring and the hub shell below and configured to serve as a rotation axis to rotate together with the hub hub disk below coupled with the right hook of the hub spring;

The right side portion is formed so that the torsion action of the hub spring is achieved by being rotated together with the hub axle and the right hook of the hub spring in the winding direction of the hub spring, together with the free wheel of the present invention on its outer surface. a hub axle disc 2 coupled to the free-wheel by a ratchet and configured to rotate by the freewheel; And a hub cap 11 formed with a fastening screw groove therein for securing the hub spring, the hub axle disk and the hub axle in the hub shell, and a cap formed to protect them from incoming dust. and;

The left side has a space in which the hub spring is built, and a hook hole coupled to the left hook of the spring is formed on the left side, and is coupled together from the outside by a force to loosen the built-in hub spring. The spokes and wheels (rim + tires) other than the present invention is formed to rotate together, and the outer surface of the right popped portion is formed of a threaded groove formed on the right side, the thread groove is formed to engage with the hub cap Hub shell 1; Etc.,

② Pedal set (pedal set), as shown in Figure 6,

A pedal body 91 and a pedal shaft 97 which have been conventionally used;

A split 'T' shaped lifter, which is engaged with the pedal body at both ends of the pedal body, and is formed with a hole in the center so that the pedal shaft penetrates, so that the ring formed at both ends of the pedal lifter is fixed so as not to be peeled off. Pin 93;

A pedal lifter 90 which is fixed to the lifter pins at both ends of the pedal body, moves with the pedal body, and has a buckle formed at the center thereof to be adjusted according to the size of the instep of the operator mounted on the pedal; And the like.

FIG. 5 is a view illustrating a path through which auxiliary power is transmitted by a torsional action of a spring in the driving of a bicycle having the auxiliary power device of the present invention having the structure as described above.

In other words, the process until the driver's pedaling force acts as the wheel rolling power,

① In conventional bicycles, there is only one immediate and direct disconnection transmission method: pedal → chainring and cassette sprocket → rear hub (= wheel).

② In the bicycle according to the present invention, ⑴ addition to the prior of the direct transfer system, ⑵ pedal → chainring and cassette sprocket → hub spring (torsion) → a part of that rear hub (= wheel), that is, pressing force, a torsional action It is a double-wire transmission system that adds one additional indirect and assisted transmission, which is stored in the hub spring as a torsional force, which is stored as elastic energy, and then released as time-driven power.

In the present invention, the bicycle of the spring structure of the above structure is provided in the rear hub set as an auxiliary power unit,

The driver has greater force and muscle effect than in a conventional bicycle where only two pedals are pedaled by lifting and revolving two pedals with two feet at the same time. Can exert, of course,

(2) The increased force ⑴ preferentially, some of which act as direct power directly rolling the wheel, as in conventional bicycles, ⑵ subsequently, between the wheel ground, air, obstacles and power components. The rest of the parts which could not be exerted by the direct power due to various frictional resistances, etc., are not lost as they are in a conventional bicycle, but the torsion of the coil springs embedded inside the rear hub set, regardless of the frictional resistances related to the outside. By acting as an indirect power stored as a torsion, which is elastic energy by action, and released again as power to roll the wheel at any time difference by the elasticity to which the torsion is released, consequently the operator, While utilizing the limited stamina efficiently, the quickness at the start and the acceleration at the acceleration ) And can be deungpanryeok (登 坂 力) effectively improve the driving skills, such as during start.

For example: ① Before starting, hold the brake lever and stop, and use the pedal and the pedal lifter with one foot to rotate the pedal as far as possible to maximize the torsion force of the spring. If you start by pedaling with force, the force stored in advance will be released as indirect power, with new force applied continuously after departure, so you will have a stronger quickness than when starting with a conventional bicycle that is only a direct powertrain. as well as it is able to travel, and, ② usually accelerated during traveling or in the, or in situations to climbing the uphill road, the acceleration process, such as from immediately after the above, and came to the maximum speed, as a pressing force is torsional action of the spring Direct power unit, because it can continue until it can no longer be achieved It is possible to drive with faster acceleration and stronger climbing power than when accelerating or climbing with a conventional bicycle.

The former is as if the time to reach the speed of 100 km / h after departure compares superiority when comparing the performance performance of the class cars, and the latter is the highest speed when comparing the acceleration and climbing power of the class cars. It's like covering the top and bottom, depending on how many km / h, or how much horsepower or peak power or torque is.

Therefore, the auxiliary power plant according to the present invention is absolutely effective, especially on road-bikes intended for high speed driving, and sometimes even on downhill MTBs for safe driving on steep downhill roads. Of course, this can be effective because you need to accelerate or climb uphill.

The auxiliary power unit of the present invention, with a cassette sprocket mounted on almost all bicycles, almost without exception, assists in maximizing or optimizing performance such as quickness, acceleration, and climbing force in situations such as starting, acceleration, and climbing. It is the same in that it is a power unit.

As a side effect of the present invention, in muscle exercise of the lower body by pedaling, only the muscles which press the pedals down are developed in the conventional bicycle, but in addition, in the bicycle according to the present invention, even the muscles of lifting the pedals up are also included. Can develop. This is because the pedaling and lifting muscles are completely different.

Regarding the springs above,

In the state where the standard (diameter, width, etc.) of the rear hub is constantly standardized, and accordingly the standards of the outer diameter (05, 45) and the free field (02, 42) of the spring are constantly standardized,

Differentiate the wire diameters (03, 43) of the spring to 5mm, 6mm, or 7mm, or subdivide the number of springs into 5, 4.75, 4.5, 4.25, 4, 3.75, 3.5, 3.25, 3, etc. Wires of different sizes can be used for piano wires, oil-tempered wires, stainless steel wires, etc., with varying strengths. Can be.

For example, in ㈎ racing bike for at least the pressing force to keep the drive when, ① a constant speed in the plains of the pavement are not twisting action occurs, ② twisting action begins when you start to increasing the pressing force to accelerate, ③ To maximize the speed to use the maximum physical strength to exert the torsion effect to the maximum,

In addition, ㈏ in the mountain bike, uphill driving when, ① yigetjiman slightly larger pressing force than in the plains, the minimum pressing force to maintain a constant speed, without a twisting action occurs, ② twisting action when you start to increasing the pressing force to accelerate This will start, ③ to maximize the speed to maximize the physical strength to exert the force to complete the torsion effect,

In addition, ㈐ in bicycle of any use, when to stop pedaling so loose to completely undo the twist, and ㈑ to meet all various sizes stamina and exhibits the same manner as above and also the possible pressing force in accordance with such young and old, standard spring Can be formed in various technical ways.

The above conditions must be carefully determined to ensure that the initial dimensions of the rear hub shell can be achieved by simply replacing the springs formed with various specifications and materials without modifying the commercially available standard of the rear hub shell.

In a bicycle equipped with the present inventions, the auxiliary power unit, but described in the order of three and a rear hub ㈎ ㈏ pedal set, unfortunately many English representation is because why the dialect itself.

First of all, each of the bearings in the city (21, 22, 31 in Fig. 2), all ball bearings for the cloud (ball bearing), but only ball bearings for the convenience of illustration in limited space, but fixed them Note means that a retainer is naturally included. In addition, about the direction of friction which a bearing should bear, it expresses as a 1-point solid line (for example, 35 in <3> of FIG. 3).

In addition, the rubber tubes (09 and 39 in Fig. 2) of the illustration are located inside and outside of the spring, respectively, and the reduction or enlargement of the inner and outer diameters of each spring is repeated by the repetitive action of the twisting and restoring of the spring. In the process, the spring is formed to prevent metallic friction with the internal and external components. In particular, the axle tube 39 seals the cleaved position after splitting and inserting because of the axle jaws 32, 33, 62, and 63 that are caught when the axle tube 39 is inserted into the axle.

Hereinafter, the description of the above bearing and rubber tube will be omitted.

㈎ The rear hub set, as shown in Fig. 2, includes: ① hub spring (0), which is the core component, ② hub shell (1) covering the entire set, ③ hub axle (3), the rotation axis of the entire set, and ④ its outside. Hub axle disc (2), and ⑤ hub shell stop hub cap (11), other ball bearings (21, 22, 31) and rubber tube, which will be omitted from the description below. Fields (09, 39) and the like.

1 shows a spring incorporated in the rear hub set.

FIG. 2 is a cross-sectional view of the rear hub set with its springs and its surrounding components, and in particular, the components of the inventors of the rear hub set are shown as fill colors for identification purposes. 3 is a plane figure and a side view showing the components of the rear hub set, respectively, in which <a> and <b> at both ends are perspective views showing related parts other than the present invention. . In particular, Figure 4 illustrates the process of torsion of the spring and its restoration.

As the parts other than the present invention, the hub is placed on the non-drive side <a> of the rear hub set, as indicated in the lower and lower ends of FIG. 2 and the upper and lower ends of FIG. Tightening nut (a1) which secures the penetrating thru-axle to the drop-out of the rear fork, and through-axle (a2), which is the axis of rotation of all components and parts shown. The rear fork (a3) for fixing the axle to the frame, the axle end (a4) and adjusting cone (a5) for fixing the hub shell (1), bearing (a6), etc. On the right side (b), a ratchet gear (b10) and ratchet pawl (b9) of ratchet, which are connected to the rear hub set, and a free wheel connected to ratchet ( The free-wheel (b8), the cassette sprocket (b7) on the outer surface and the other parts (b6 to b1) are configured as the left side, and the spoke hole circle on the outer surface of the other hub shell (1) (circle) (14) Generated and the like spoke (spoke) (16) fitted in the spoke hole (hole) (15). The component configuration may be added or subtracted depending on the manufacturer, but it will not be further described as it is other than the present invention.

(1) The hub spring shown in Fig. 1 is a metallic material and has a wire diameter (03), a free field (02), an outer diameter (05) and an inner diameter (04) of a suitable standard so that the strength of torsion, which is elastic energy due to torsion, is appropriate. To form a twisting action in the winding direction 07 so that the number of coiling 08 increases (08a in FIG. 8), and the space between the steel wires and the steel wires is appropriately opened and molded. Should be. In particular, the two hooks (01x, 01y) at both ends of the spring are formed to a suitable length so as to project in a 'b' shape to the left and right sides of the free field, respectively, wherein the right hook (01y), the hub axle disk ( 2) is engaged with the hook hole (20 in FIG. 3) formed at the periphery of the hub axle disc so that the torsion action of the spring is achieved, and the left hook (01x) is the hub shell by the original recovery action (torsion) of the twisted spring It is engaged with the hook hole (10 in FIG. 3) formed in the hub shell so that (1) can be rotated.

FIG. 4 illustrates a process in which the hub spring embedded in the rear hub set performs the function of torsion & restoration, and the illustration on the left is a spring in its original state, and the illustration on the right is It is a spring in which the torsion action is completed, and the outer diameter 05a and the line 06a of the spring are reduced and the number of turns 08a is increased by the torsion action. At this time, as the outer diameter is reduced, the two hooks 01x and 01y change from the original positions 10a and 20a to the positions 10b and 20b slightly shifted in the spring center direction, so that the positions are moved. As a result, the length 10c of the hook hole 10 of the hub shell and the hook hole 20 of the hub axle disk are slightly longer. In addition, the forming direction of the length should be formed to be slightly inclined in the opposite direction of the twist so that the spring hook can be easily moved in the hook hole during the twisting and restoring action of the spring, as shown in FIG. 20 are formed in opposite directions to each other.

2 and 3, the hub shell 1 of Figs. 2 and 3 deforms the rear hub shell conventionally used in order to incorporate the hub spring, and deforms the right side part by the hub axle disk 2 described below. 14) the diameter of the remaining body portion, including 14) is enlarged by the outer diameter of the built-in spring (05 in Fig. 1) and is transformed into a cup shape. The left side of the block is engaged with the left hook 01x of the spring, and the hook hole 10 is formed in the width of the wire diameter 03 and the appropriate length and direction as a space in which the hook is moved when the spring is twisted. In addition, a space in which the hole 13 of the space including the bearing 31 and the bearing a6 and the adjustment cone a5 of the present invention can be coupled so that the following hub axle 3 can be inserted and rotated separately. (12) is formed. On the popped surface on the right side, a screw groove 1t fastened to the hub cap 11 to be fastened so as to fix the built-in hub spring 0 and the hub axle disk 2 and hub axle 3 and the like below. It is formed on the outer surface. On the outer surface, as in the conventional hub shell, the spoke hole circle 14 and the spoke hole 15 is formed so that the spoke (16 of FIG. 2) connected to the rim of the present invention is fastened.

(3) The hub axle 3 of Figs. 2 and 3 is a cylindrical axis of rotation that penetrates the rear hub set and the freewheel b8 other than the present invention, and is coupled by a bearing 31 so as to rotate separately from the hub shell 1. However, the cross section must be specially formed in an octagon 34 to be rotated together with the hub axle disc 2 described below. In addition, in the shape of the outer surface, the axle jaws 32 and 33 are formed in and out of respective engagement positions so that the left side is coupled to and fixed to the hub shell 1 and the right side to the hub axle disk 2. And the hole 30 through which the through axle a2 other than this invention penetrates is formed in the center.

(4) The hub axle disc 2 of Figs. 2 and 3 is a disc having a cross section of a 'ㅑ' shape, and is a position where the cross section of the hub axle becomes an octagon so as to rotate together with the hub axle 3 to be rotated ( An octagonal hole 24 engaged with the 34 is formed in the center, and the hook hole 20 coupled with the right hook 01y of the spring is suitable for the width of the wire diameter 03 so as to rotate together with the hub spring. It is formed in the peripheral part in the length direction. In addition, although the hub shell 1 and the hub cap 11 described below constitute three sets together, they must be rotated separately during the twisting action of the spring, so that the bearings 21 and 22 are respectively provided on the inner and outer contact surfaces thereof. This is installed. And the space 25 is formed in the center of an outer surface so that it may be combined with the freewheel b8 other than this invention by the ratchet (b9 + b10).

⑤ The hub cap 11 of FIGS. 2 and 3 has a screw groove 1t formed on the outer surface of the popped surface of the hub shell so as to securely fix the components 0, 2, and 3 embedded in the hub shell 1. Screw groove 11t is formed on the inner surface, and the freewheel other than the present invention is in the form of a perforated bottle cap in which a hole 11a is formed at the center for engaging with the rear hub set.

The pedal set includes, as shown in FIG. 6, a conventional pedal body 91 and a pedal shaft 97, a split 'T' shaped lifter pin 93; A pedal lifter 90 having a bark formed therein; And the like.

Although the pedal body and the pedal shaft are conventional, the two lifter pins 93 fastened to both ends of the pedal body are formed by a hole 98 formed in the center so that the pedal shaft 97 penetrates. The T-shaped head is formed so that the rings 92a and 92b at both ends of the pedal lifter 90 are not caught, and a screw groove is formed on the outer surface of the body to be engaged with the pedal body. Pedal lifter 90 for lifting the pedal to the foot, such as a belt, is formed of a wide width (90d) made of a solid rubber or leather material, both ends of the ring (92a, 92b) is formed to be fixed to the lifter pin In the center, a buckle is formed to connect two parts 90a and 90b, which are disconnected from side to side, as females 90c1 and males 90c2 and 90c3, respectively. At this time, the pedal lifter 90 fixed to the lifter pin of the pedal body is always positioned in the diagonal direction, immediately above the pedal shaft, so that the shape or weight distribution of the pedal body 91 can be easily inserted. The rear part 91a is long or heavy, the front part 91b is short or light, the lower part 91c is long or heavy, and the upper part 91d is short, It should be formed lightly.

The pedal lifter 90 in the present invention is a means of lifting the pedal upwards, but the conventional toe clip attached to the tip of the pedal is a means of fixing the foot on the pedal, the two being completely different. .

1 is an elevation view of a spring embedded in a rear hub set

2 is a cross-sectional view of a rear hub set and its associated parts incorporating a left-hand spring as an auxiliary power unit;

3 is an exploded view of a spring-mounted rear hub set and its related parts as an auxiliary power unit;

Figure 4 is an illustration of the torsion of the spring and its original recovery action

5 is a diagram of a transmission path of auxiliary power;

6 shows a pedal set with a pedal lifter as an auxiliary power unit;

[Explanation of symbols on the main parts of the drawings]

0: hub spring 1: hub shell

2: hub axle disc 3: hub axle

90: pedal lifter

Claims (5)

In the rear hub set and pedal set that are part of the bicycle drive, The rear hub set is provided with a spring formed in the form of a coil as a rod-shaped metal steel wire, and the pedal set is provided with a pedal lifter configured to lift the pedal in addition to stepping on the sole of the foot. A bicycle equipped with an auxiliary power device, characterized in that the spring and the pedal lifter are capable of more effectively and effectively exerting, storing and releasing the force when pedaling. The method according to claim 1, The spring provided in the rear hub set is formed by a winding type of a winding type, so that the force in pedaling can be stored and released by repeated action of twisting and unwinding in the winding direction. Bicycle equipped with an auxiliary power unit. The method according to claim 1, The rear hub set mentioned above, It is built in the center, and is molded to the standard of free length, wire diameter, and outer diameter, and short hooks are formed at both ends in the outward direction of the free field, respectively, so that the two hooks move in opposite directions with respect to the winding direction. A hub spring (0) formed such that a repeated action of twisting and restoring is achieved; On the left side, a space in which the hub spring is built, and a hook hole engaged with the left hook of the spring are formed on the left side, and the spokes joined together at the outer surface by a force to loosen the torsion of the built-in hub spring; A cup shell which is formed to be rotated together to the wheels (rim + tires) and has a screw groove formed on the outer surface of the right popped portion so as to be engaged with the hub cap described below; At its center, the hub axle (3) is formed so as to penetrate the hub spring and the hub shell, and to serve as a rotation axis of the following hub axle disk coupled to the right hook of the hub spring; At the right side thereof, while being engaged with the hub axle and the right hook of the hub spring, the hub spring is rotated together with the hub axle, thereby forming a torsional action of the hub spring. A hub axle disc 2 coupled by ratchet and formed to rotate by the freewheel; In order to stably fix the hub spring, the hub axle disk and the hub axle in the hub shell, a chamfering screw groove is formed therein, and a hub cap 11 having a stopper formed to protect them from incoming dust. ; The bicycle is equipped with an auxiliary power unit, characterized in that to enable to store or discharge the power. The method according to claim 1, The pedal set includes a pedal body (91) and a pedal shaft (97); A divided 'T' shaped lifter, which is fastened to the pedal body at both ends of the pedal body, and is formed with a hole in the center so that the pedal shaft penetrates, so that the ring formed at both ends of the pedal lifter is fixed so as not to be peeled off. Pin 93; A pedal lifter 90 fixed to the lifter pins at both ends of the pedal body and moving with the pedal body, and having a barl at the center to be adjusted according to the size of the foot of the bicycle rider mounted on the pedal; A bicycle equipped with an auxiliary power unit, characterized in that it is configured to be able to effectively exercise, store and discharge power. The method according to claim 1, The spring provided in the rear hub set or the crank set has a metallic friction with the components whose inner and outer surfaces are in and out in the process of reducing or expanding the inner and outer diameters by the action of torsion or loosening. A bicycle with an auxiliary power unit, characterized in that a rubber tube is provided on its inner and outer surfaces so as to prevent the occurrence of this problem.

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