KR19980080145A - Bicycle driving and acceleration - Google Patents

Abstract

The present invention relates to a bicycle driving and acceleration apparatus, comprising: a frame having front and rear wheels in front and rear; A pair of pedals fixed to both ends of a shaft rotatably supported by a boss fixed below the center of the frame and driven by a passenger's foot; A main sprocket which is fixed to the shaft and transmits rotational force through the chain to the rear wheel side; A housing attached to one side of the boss and formed into a hollow cross-sectional shape of which an outer side is opened to receive the main sprocket and other accessories therein and to seal the cap with a cap; A pinion axially fixed to the shaft to one side of the main sprocket within the housing; A first gear member accommodated in the housing and having outer ring gears and inner ring gears formed at inner and outer diameters, respectively; A second gear member which is in close contact with the first gear member so as to be able to flow to each other, an outer gear is formed on the outer side, and planetary gears which are meshed with the inner ring gear of the first gear member are rotatably installed around the pin; A forward and reverse latch means inserted into the first gear member and the second gear member to control the first gear member and the second gear member to rotate in only one direction, respectively; It is composed of a switching control unit connected to the outer side of the housing by the release cable to control the bite of the first gear member and the second gear member according to the user's selection to set the driving state and the acceleration state according to the rotation direction of the pedal Thus, the driver of the bicycle simply selects the changeover lever so that the bicycle can always be driven forward even at the time of reverse rotation as well as forward rotation of the pedal 20.

Therefore, it is possible to induce muscle fatigue and induce balanced muscle development.

In addition, the acceleration driving in which the rotation speed is increased with respect to a certain rotation by selection is also possible.

In addition, it is a very useful invention such that the configuration is simple and there is no need to install a separate complicated shift gear.

Description

Bicycle driving and acceleration

The present invention relates to a bicycle driving and an acceleration device, and more particularly to the forward and reverse rotation of the pedal is always in the forward driving, and in particular to the invention in order to enable the acceleration driving.

In general, a bicycle is composed of front, rear and rear wheels that are freely installed at the front and rear of the frame, a pedal that generates power by the passenger's foot, and a power transmission member for transmitting power to the rear wheel by rotating the pedal. do.

At this time, the power transmission member is composed of a driven sprocket on the pedal side, and a driven sprocket having a ratchet means so that power is transmitted only in one direction to the rear wheel side, and a chain connecting the driven sprocket and the driven sprocket.

The driven sprocket is provided with a ratchet mechanism that allows the bite to be engaged in one direction only with the rear wheel.

In the conventional bicycle configured as described above, when the pedal is rotated in one direction, that is, the forward direction, rotational force is transmitted to the rear wheel side by a chain connecting the main sprocket and the driven sprocket, so that the bicycle is driven only in the forward direction.

Therefore, the pedal must be rotated only in one direction in which the forward movement is made, in particular, the muscles of the legs are disproportionately developed during long driving.

In addition, since the same exercise panel is repeated, not only do you feel tired easily, but also fatigue is accumulated easily, it is impossible to release the fatigue of muscles while driving.

In this case, according to the conventional driving device, when the rotation of the pedal is stopped or reversely rotated, the main sprocket and the chain are reversed, but the power transmission is driven by the one-way ratchet means provided in the driven sprocket. This will result in the sprocket turning backwards.

In order to solve the shortcomings of the bicycle, Korean Patent Publication No. 95-13589 has suggested that the bicycle can be moved forward even if the pedal is reversed, so that the driver's feet are well balanced.

The patent document includes a one-way clutch means for selectively transmitting a driving force of a pedal to a drive sprocket, a feed shaft for shifting the gear engagement state by an actuating lever, an idle gear, a reverse gear hill, and the like.

However, the structure of the conventional reverse traveling apparatus is complicated.

Moreover, since it cannot be applied to the structure of the driven side drive wheel currently widely used, a new bicycle must be purchased when installing this reverse driving apparatus.

And the biggest drawback is that there is no transmission.

Therefore, there is a dismissal such as avoiding the use of the transmission, which is widely popularized and used by bicycle users.

It is an object of the present invention to provide a driving and accelerating device for a bicycle that is capable of driving by transmitting power even when the pedal is driven in a forward rotation as well as a reverse rotation.

Another object of the present invention is to provide a bicycle driving and accelerating device that can relax muscle fatigue and induce balanced muscle development.

Another object of the present invention is to provide a driving and acceleration device for a bicycle that can be purchased more economically without providing a separate transmission, since a simple transmission can be accelerated driving is provided integrally.

1 to 6 show a first embodiment of the present invention,

1 is an exploded perspective view showing a configuration of one embodiment of the present invention

Figure 2 is a main operation state diagram of the normal pedal direction drive state of the present invention

Figure 3 is a main operation state diagram of the normal pedal direction acceleration drive state of the present invention

Figure 4 is a main part operating state of the reverse pedal drive state of the present invention

5 is an enlarged cross-sectional view showing the main assembly structure of the present invention.

Figure 6 is a front view of the main portion assembled state of the present invention

7 to 11 illustrate a second embodiment of the present invention.

7 is an exploded perspective view showing a configuration of a second embodiment of the present invention

8 is an essential part operating state diagram of a normal pedal direction driving state of a second embodiment;

9 is an essential part operating state diagram of a normal pedal direction acceleration driving state of a second embodiment;

Fig. 10 is an essential part operating state diagram of a reverse pedal driving state of a second embodiment;

11 is a cross-sectional view showing a partially cut away the main assembly state of the second embodiment;

Explanation of symbols for main parts in the drawings

10-Frame 20-Pedal

30-Sprocket 40-Housing

50-Pinion 60-First Gear Member

70-Second gear member 80,90-Reverse ratcheting means

100-control unit 111-camshaft

110,120-Swing control latch 130-Shaft pin

The object of the present invention is a frame (10) having front and rear wheels in front and rear;

A pair of pedals 20 fixed to both ends of the shaft 22 rotatably supported by the boss 21 fixed to the center lower side of the frame 10 and driven by the passenger's foot;

A main sprocket 30 fixed to the shaft 22 to transmit rotational force through the chain 31 to the rear wheel side;

A housing (40) attached to one side of the boss (21) and shaped into a hollow cross-sectional shape of which the outside is opened to receive the main sprocket (30) and other accessories therein and to be sealed by a cap (41);

A pinion (50) axially fixed to the shaft (22) to one side of the coarse sprocket (30) inside the housing (40);

A first gear member 60 accommodated in the housing 40 and having outer ring gears 61 and inner ring gears 62 formed at inner and outer diameters, respectively;

The outer gear 71 is formed on the outer side of the first gear member 60 to be in close contact with the first gear member 60, and the planetary gears 74 engaged with the inner ring gear 62 of the first gear member 60 are pins ( A second gear member 70 which is freely rotatable about a shaft 75;

The latch means 80 is inserted into the first gear member 60 and the second gear member 70 to control the first gear member 60 and the second gear member 70 to rotate in only one direction, respectively. 90;

It is connected to the release cable 104 from the outside of the housing 40 to control the bite of the first gear member 60 and the second gear member 70 in accordance with the user's selection in the direction of rotation of the pedal 20 It is achieved by being composed of a switching control unit 100 to set the running state and the acceleration state according to.

Therefore, the driver of the bicycle simply selects the changeover lever so that the bicycle can be driven forward even when the pedal is rotated forward as well as in the reverse direction, thereby releasing muscle fatigue and inducing balanced muscle development.

In addition, the acceleration driving in which the rotation speed is increased with respect to a certain rotation by selection is also possible.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 6 are the first and second embodiments of the present invention, in which the ratchet means 80 and 90 are latched to the latch protrusion 63 and the latch gear 73 in the form of gears, respectively. 7 to 11, the second embodiment of the present invention shows that the forward and reverse ratchet means 80, 90 are configured in a clutch bearing manner in different embodiments. .

1 and 7 are exploded perspective views showing the main parts of the present invention in an exploded view, Figures 2 and 8 are both the rotation control latch 110, 120 is raised to the first gear member 60 and the second gear. The rotation direction of the pedal 20 and the driving direction of the bicycle are in the same normal driving state in the free state without the member 70 being caught.

3 and 9, the rotation control latch 110 for controlling the rotation of the first gear member 60 is operated to increase the speed by a predetermined ratio by the planetary gear 74 so that the main sprocket 30 is driven. It is shown to do.

In addition, in Figs. 4 and 10, the rotation control latch 120, which controls the rotation of the second gear member 70, moves forward to prevent the rotation, so that the main sprocket 30 despite the reverse rotation of the pedal 20. ) Is operated in the forward direction.

As shown in this figure, the front and rear wheels (not shown) are provided freely in the front and rear of the frame 10 forming the frame of the bicycle, and the pedal 20 is installed at the lower center of the frame 10. The boss 21 for supporting the rotation is fixed.

The inside of the boss 21 is fixed to the pedal 20 at both ends, and the shaft 22 is freely rotated by a bearing (not shown), and the foot of the occupant is positioned on the pedal 20 to apply force to the pedal 20. The rotational force is transmitted to the shaft 22, and the driving sprocket 30 axially installed on the shaft 22 drives the rear wheel side driven sprocket (not shown) through the chain 31 to perform the forward driving of the bicycle.

As such, the main sprocket 30 shaft mounted on the shaft 22 to transmit the rotational force through the chain 31 is located inside the housing 40.

The housing 40 is fixedly attached to the frame 10 at one side of the boss 21, and the cap 41 is sealed in the state that the outside thereof is opened, so that various instruments are stored in a hollow cross-sectional shape therein. It prevents the ingress of foreign debris and protects the viscosity of the oil required for operation.

The housing 40 accommodates other accessories such as the main sprocket 30, the pinion 50, the first gear member 60, and the second gear member 70.

That is, inside the housing 40 accommodates the pinion 50 which is fixed to the shaft 22 to one side of the main sprocket 30 and rotates together with the main sprocket 30.

In addition, the outer ring gear 61 and the inner ring gear 62 are formed in the inner and outer diameters of the housing 40, respectively. In the first embodiment shown in FIGS. The first gear member 60 in which the latch protrusions 63 are repeatedly formed is accommodated.

On the other hand, the first gear member 60 is installed in close contact with the second gear member 70 is separated from each other to be able to flow separately, the outer gear 71 is formed on the outside and the first gear in the central portion The planetary gears 74 meshed with the inner ring gear 62 of the member 60 are accommodated together in the housing 40 in a state in which the pins 75 are freely rotatably installed around the pin 75.

The second gear member 70 has a latch protrusion 63 formed in the center hole of the first gear member 60 in the first embodiment as in the first gear member 60 in the same manner as in the case of the first gear member 60. The latch gears 73 are repeatedly formed at regular intervals in the holes drilled in the same diameter in the reverse direction.

The first gear member 60 and the second gear member 70 have ratchets 81 facing in opposite directions at different positions so as to be latched to the latch protrusion 63 and the latch gear 73, respectively. The latch member 85 is provided with 82, the one side pedal 20 is fixed to the outside of the latch member 85 by a bolt 83, through the latch member 85 by the drive of the pedal 20 The first gear member 60 and / or the second gear member 70 are selectively driven and 1: 1 forward driving and 1: 1 reverse direction by the function of the planetary gear 74 connected by a medium between them. The pedal operation is made, and the driving speed is increased to a predetermined rate so as to drive forward.

At this time, any one or two of the first gear member 60 and / and the second gear member 70 is fixed so as not to rotate at the same time, or rotationally freely controlled 1: 1 forward driving, 1: 1 A reverse control operation and a switching control unit 100 for increasing selection at a predetermined rate are provided outside the housing 40.

That is, the cam shaft 111 for controlling the position of the rotation control latches 110 and 120 in a state in which the case 121 is attached to the outside of the housing 40 so as to open the cable release 104 The rotation control latches 110 and 120 are lowered or raised by connecting the position of the camshaft 111 at the driver's choice by connecting around the handle of the bicycle. It is to control the rotation of the first gear member 60 and the second gear member 70.

The case 121 surrounds the switching control unit 100, and a passage is formed so as to communicate with the inside of the housing 40 in an empty state.

In the first embodiment, as shown in FIG. 1, the case 121 is configured to rotatably support both ends in a state that penetrates the cam shaft 111, but as in the second embodiment of FIG. 7, the cam shaft ( The support part for supporting 111 is formed integrally from the housing 40, and the case 121 may be installed only to protect the switching control part 100 from the outside.

The cam shaft 111 is formed by cam protrusions 101 and 102 at different positions, and the cam shafts 111 are cams of the position of the pair of rotation control latches 110 and 120 installed at the position of the cam protrusions 101 and 102. It is controlled by the shape.

The outer end of the camshaft 111 is connected to a switch selector lever (not shown) and a release cable 104 positioned around the handle of the occupant, and the rotation angle thereof is obtained by pulling the wire according to the operation of the switch selector lever. Is switched.

Accordingly, any one of the pair of rotation control latches 110 and 120 operates to engage with the first gear member 60 and the second gear member 70 to intervene rotation or rotate as shown in FIG. 2. In the state where the control latches 110 and 120 are not operated, the gears of the first gear member 60 and the second gear member 70 are not made, so that the first gear member 60 and the second gear member ( 70) can be rotated together at the same time.

The rotation control latches 110 and 120 are geared when the end is positioned between the teeth of the first gear member 60 and the second gear member 70 in a sharp blade shape, the stop portion is a shaft pin ( 130 is rotatably installed in a rotatable state.

In addition, the upper end thereof is elastically supported by the spring 131, the shaft pin 130 is rotated about the axis in accordance with the position in contact with the cam projections 101 and 102 by the position change of the cam shaft 111, the first gear member The rotation of the 60 and the second gear member 70 is controlled, and the rotation control latch 110 on one side is positioned symmetrically inside the case 121 in pairs and the first gear member 60. The rotation control latch 120 on the other side is installed at a position where teeth can be engaged with the second gear member 70.

Although the spring 131 for elastically supporting the cam protrusions 101 and 102 is shown in the first embodiment, the compression coil spring is elastically installed between the inner walls of the case 121 in FIGS. 2 to 4. In the second embodiment as shown in Figs. 8 to 11, the same effect can be obtained even if the torsion spring in the wire state is selected.

Meanwhile, in the second embodiment shown in FIGS. 7 to 11, clutch bearings 91 and 92 are installed as other embodiments of the reverse ratcheting means 80 and 90 to perform a function of the latch mechanism.

That is, one side of the inner ring gear 62 of the first gear member 60 forms a smooth inner diameter without a gear, and a plurality of balls 91c and springs 91d are assembled at regular intervals. 91).

In addition, the second gear member 70 is fitted with another clutch bearing 92 of the same structure.

The clutch bearings 91 and 92 are provided with grooves 91a and 92a having inclined surfaces 91b and 92b at regular intervals, and are provided with the balls 91c and 91c at the positions of the grooves 91a and 91a. Springs 91d and 91d are assembled, respectively.

Accordingly, when the clutch bearings 91 and 92 are displaced from the direction of rotation of the first gear member 60 and the second gear member 70-when they are out of the directions of the inclined surfaces 91b and 92b-the balls 91c. 92c slides along the inclined surfaces 91b and 92b and moves to a position where the inner diameters of the first gear member 60 and the second gear member 70 become narrower, and the balls 91c and 92c therebetween. ) Is in close contact with the clutch bearings 91 and 92 and the first gear member 60 and the second gear member 70 by an integral fit method. Detailed operating principles of (91) and (92) are already known and used as mechanical parts, and thus will be omitted.

On the other hand, the clutch bearing 92 assembled to the second gear member 70 is formed with an inclined surface 92b having a direction opposite to the inclined surface 91b of the clutch bearing 91 assembled to the first gear member 60. It is.

Therefore, the rotation direction of the first gear member 60 and the second gear member 70 are controlled in different directions.

As described above, in the first embodiment and the second embodiment of the present invention, the configurations of the forward and backward ratchet means 80 and 90 are different, but the effects and effects are the same.

Hereinafter, each step driving process of the present invention will be described in detail.

[Example of pedal forward direction normal driving process]

As shown in FIGS. 2 to 8, the camshaft 111 connected to the release cable 104 by the operation of the lever positioned on the handle is positioned in a neutral position, and the pair of rotation control latches are in contact with the cam protrusions 101 and 102. The 110 and 120 are depressed so that the gears of the first gear member 60 and the second gear member 70 are not geared to each other.

Accordingly, when the pedal 20 is applied to advance the clockwise direction like an ordinary bicycle as an arrow, the first embodiment and the square are fixed to the pedal 20 by bolts 83 (see FIG. 1). Clutch bearings 91 and 92 coupled to the shaft 22 at the end are rotated in the same direction.

In the first embodiment, the engagement state in which the second gear member 70 is integrated by being engaged with the latch gear 73 of the second gear member 70 of the ratchet 82 elastically installed in both directions in the latch member 85. In addition, since another ratchet 81 having a reverse direction is engaged with the latch protrusion 63 of the first gear member 60, reverse rotation of the first gear member 60 is simultaneously prevented.

In addition, in the second embodiment, the combined state is integrated by forcibly being engaged between the balls 92c in the direction of the inclined surface 92b of the clutch bearing 92 assembled to the second gear member 70. In addition, since another clutch bearing 91 having the inclined surface 92b having a reverse direction is coupled in the same structure as the first gear member 60, reverse rotation of the first gear member 60 is simultaneously prevented.

On the other hand, the planetary gear 74 is installed to the second gear member 70 so as to be fluidly coupled to the inner ring gear 62 of the first gear member 60, so that the planetary gear 74 is rotated. It becomes impossible.

Accordingly, the planetary gear 74 is also driven by the latch member 85 being rotated together in the same direction while the first gear member 60 and the second gear member 70 are integrated when the pedal 20 travels forward. The pinion is revolved in a state in which the center is supported by the pin 75, and the pinion 50, which is geared to the inside thereof, is fixed to the main sprocket 30 in the clockwise direction which is the same as the pedal 20. Is rotated to transmit the driving force to the rear wheel side through the chain (31).

At this time, when the pedal 20 is stopped or reversely rotated, the ratchet 82 of the latch member 85 rotates with the latch gear 73 of the second gear member 70 in the latch release direction, as in the conventional bicycle. It is possible to stop the rotation operation of the pedal 20 or reverse rotation while driving the bicycle, in which case power transmission is not made.

[Example of pedal forward acceleration driving process]

As shown in FIGS. 3 and 9, the camshaft 111 connected to the release cable 104 is rotated to one side by the operation of the lever positioned on the handle, and the pair of rotation control latches contacting the cam protrusions 101 and 102 ( Rotating the end of the rotation control latch 110 in the bitten position of the first gear member 60 in the first and second gear members 60 and 120 rotates the first gear member 60 in a non-rotating state, and the second gear member ( Only 70) has a rotatable state.

Therefore, when a force is applied to advance the pedal 20 clockwise as in an ordinary bicycle like an arrow, the latch member 85 and the clutch bearings 91 and 92 are rotated in the same direction.

At this time, in the first embodiment as shown in FIG. 1, the latch member 85 is fixed to the pedal 20 by bolts 83. In the second embodiment as shown in FIG. 7, the clutch bearing 92 has a square end portion. And the two clutch bearings 91 and 92 can also be rotated together by being coupled to each other by having a square shaft 92s and a boss 91s.

In the latch member 85, one ratchet 82 of the ratchets 81 and 82 elastically installed in both directions in the first embodiment is engaged with the latch gear 73 of the second gear member 70. While the two gear members 70 have an integrated coupling state, another ratchet 81 having a reverse direction is engaged with the latch protrusion 63 of the first gear member 60.

However, the first gear member 60 is maintained in an impossible state because the end of the rotation control latch 110 is advanced and coupled with the teeth of the first gear member 60.

At this time, in the case of the second embodiment, since the inclination surfaces 91b and 92b formed on the clutch bearings 91 and 92 of the forward and backward ratchet means 90 are installed to be shifted from each other, the first gear member 60 and the second gear member. 70 has a state in which rotation is controlled in opposite directions to each other.

On the other hand, the planetary gear 74 that is installed to be movable in the second gear member 70 is geared to the inner ring gear 62 of the first gear member 60 is the same by the rotation of the second gear member 70. The planetary gear 74 whose center is rotated in the direction of the pinion is rotated by an inner ring gear 62 of the first gear member 60 as well as a revolution. 50) is obtained by the rotational speed of the planetary gear 74 and the rotational speed increased by the rotational speed.

Accordingly, when the pedal 20 moves forward, the latch member 85 and the clutch bearing 92 are stopped by the first gear member stopped by being rotated together in the same direction with the second gear member 70 integrated ( Clock that is in the same direction as the pedal 20 in a state where the pinion 50 is fixed to the main sprocket 30 by the rotation ratio of the planetary gear 74 positioned between the inner wheel gear 62 and the pinion 50 of the 60. Is accelerated and rotated in the direction to transmit the accelerated driving force through the chain 31 to the rear wheel side.

[Example of pedal reverse direction normal driving process]

As shown in Figs. 4 and 10, a pair of rotational control latches, in which the camshaft 111 connected to the release cable 104 is positioned at the other side and is in contact with the cam protrusions 101 and 102, is operated by the lever positioned on the handle. Among the (110) and (120), the second gear member (70) has a state of being geared.

Therefore, when the pedal 20 is rotated counterclockwise as shown by the arrow, the latch connected to the pedal 20 by the bolt 83-1 embodiment and the shaft 22-2 embodiment- The members 85 and the clutch bearings 91 and 92 are rotated in the same direction in the reverse direction.

At this time, the latch member 85 of the first embodiment is engaged with the latch projection 63 of the first gear member 60 among the ratchets 81 and 82 that are elastically installed in both directions, so that the first gear member 60 is engaged. Another ratchet 82 having an integrated coupling state and having a reverse direction rotates in a direction in which the latch gear 73 of the second gear member 70 is not engaged, and thus, the first gear member 60. Only reverse rotation is made.

In addition, the engagement state of the ball 91c of the clutch bearing 91 engaged with the first gear member 60 among the clutch bearings 91 and 92 is moved toward the narrow inclined surface 91b to be integrated. The inclined surface 92b of the other clutch bearing 92 having the reverse direction is that the ball 92c acts as the position of the wide inclined surface 92b so that only the first gear member 60 is rotated in the reverse direction.

On the other hand, since the second gear member 70 is stopped, the planetary gear 74 installed in the second gear member 70 can be idle, but the inner ring gear of the first gear member 60 is not formed. Since the gears are geared to the gear 62, the planetary gear 74 rotates only.

Therefore, the planetary gear 74 is a pin (when the reverse direction of the pedal 20, the latch member 85 and the clutch bearing 91 on one side are rotated together in the reverse direction in a state in which the first gear member 60 is integrated. The pinion 50, which is rotated in a state in which the center is supported 75, is geared inwardly, is rotated in a normal forward direction, and is fixed to the main sprocket 30 and the pedal 20 in a state of being fixed. Is to normally transfer the driving force to the rear wheel side through the chain 31 in the reverse direction.

At this time, the rotation ratio is 1: 1.

According to the configuration of the present invention as described above, the driver of the bicycle simply selects the switching lever provided around the steering wheel to allow the bicycle to always drive forward even when the pedal 20 is rotated forward and reverse. .

Therefore, it is possible to induce muscle fatigue and induce balanced muscle development.

In addition, the acceleration driving in which the rotation speed is increased with respect to a certain rotation by selection is also possible.

In addition, it is a very useful invention such that the configuration is simple and there is no need to install a separate complicated shift gear.

Claims (5)

A frame having front and rear wheels in front and rear; A pair of pedals fixed to both ends of a shaft rotatably supported by a boss fixed below the center of the frame and driven by a passenger's foot; A main sprocket which is fixed to the shaft and transmits rotational force through the chain to the rear wheel side; A housing attached to one side of the boss and formed into a hollow cross-sectional shape of which an outer side is opened to receive the main sprocket and other accessories therein and to seal the cap with a cap; A pinion axially fixed to the shaft to one side of the main sprocket within the housing; A first gear member accommodated in the housing and having outer ring gears and inner ring gears formed at inner and outer diameters, respectively; A second gear member which is in close contact with the first gear member so as to be able to flow to each other, an outer gear is formed on the outer side, and planetary gears which are meshed with the inner ring gear of the first gear member are rotatably installed around the pin; A forward and reverse latch means inserted into the first gear member and the second gear member to control the first gear member and the second gear member to rotate in only one direction, respectively; It is composed of a switching control unit connected to the outer side of the housing by the release cable to control the bite of the first gear member and the second gear member according to the user's selection to set the driving state and the acceleration state according to the rotation direction of the pedal Driving and accelerator of the bicycle, characterized in that. The method of claim 1, wherein the forward and backward ratchet means is configured by assembling a latch member having a ratchet facing in a different position in a different position so as to be engaged with the latch projection and the latch gear inside the first gear member and the second gear member, respectively. Driving and accelerator of the bicycle, characterized in that. The method of claim 1, wherein the forward and backward ratcheting grooves having inclined surfaces in different directions are dug at regular intervals, and the pair of clutch bearings, each of which the ball and the springs are assembled to the position of the grooves, the first gear member and the second gear member. Bike driving and acceleration device, characterized in that the assembly is configured in the inner diameter. The rotation control latches of the first control member and the second gear member are lowered or raised by changing the position of the cam shaft for controlling the positions of the rotation control latches. Driving and accelerator of the bicycle, characterized in that configured to control. The driving and acceleration device of a bicycle according to claim 1, wherein the rotation control latches of the switching control unit are elastically installed by a spring formed by twisting a wire.