KR19990077750A - Device for traveling and accelerating a bicycle - 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 an inner ring gear formed along an inner diameter thereof;

A second gear member which is in close contact with the first gear member so that the planetary gears meshed with the inner ring gear of the first gear member are rotatably installed around the pin;

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 release cable from the outside of the housing 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 rotational direction of the pedal. .

According to the configuration of the present invention, the driver of the bicycle simply selects the switching lever provided around the steering wheel so that the bicycle can always be driven forward as well as the 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.

Description

Device for traveling and accelerating a bicycle

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 configuration shown in this patent publication comprises a one-way clutch means for selectively transmitting the driving force of the pedal to the drive sprocket, and a feed shaft, an idle gear, a reverse gear wheel, and the like, in which the gear coupling state is changed by the operating lever.

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 is an exploded perspective view of main parts of the present invention

2 is a partial cross-sectional view of the assembled state of the present invention

Figure 3 is a partial cutaway operation state illustrating a constant speed driving state according to the forward direction of the pedal of the present invention

Figure 4 is a partial cutaway operation state illustrating the acceleration driving state according to the forward direction of the pedal of the present invention

Figure 5 is a partial cutaway operation state illustrating the forward acceleration driving state according to the reverse direction of the pedal of the present invention

6 to 8 is a perspective view showing the operation state of the switching control unit,

Figure 6 is a perspective view showing the main portion illustrating a state set to the constant speed driving state according to the forward direction of the switching control unit

7 is a perspective view illustrating main parts of a state in which an acceleration driving state is set according to a forward direction of a switching control unit;

FIG. 8 is a perspective view illustrating main parts illustrating a state in which the acceleration control state is set according to the pedal backward direction of the switching control unit; FIG.

* Description of the symbols for the main parts of the drawings *

10-Frame 20-Pedal

30-Sprocket 40-Housing

50-Pinion 60-First Gear Member

70-Second gear member 90-Reverse ratchet means

100-control unit 130,140-clutch bearing

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 a 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 an inner ring gear 62 formed along an inner diameter thereof;

Planetary gears 74 which are in close contact with the first gear member 60 so as to be mutually flowable and are engaged with the inner ring gear 62 of the first gear member 60 are rotatably installed around the pin 75 by rotating the pin 75. A second gear member 70;

Latch means 90 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. and;

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 8 respectively show that the forward and reverse ratchet means 90 is configured in a manner by a clutch bearing in an embodiment of the invention.

1 is an exploded perspective view showing an exploded configuration of the main part of the present invention, and FIG. 2 is a partially sectional view showing the assembled state of the present invention.

3 illustrates a state in which the bicycle is driven forward according to the forward rotation of the pedal according to the selection of the switching control unit 100, and FIG. 4 illustrates an acceleration of the bicycle according to the forward rotation of the pedal according to the selection of the switching control unit 100. The driven state is shown.

Meanwhile, FIG. 5 illustrates a state in which the bicycle is driven forward by acceleration even by the reverse rotation of the pedal 20 according to the selection of the switching control unit 100.

6 to 8 illustrate the operation of the transfer plate for controlling the bite position of each clutch according to the selection of the switching control unit 100 in a perspective view of the main part.

That is, 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, as shown in this figure, and the pedal 20 is installed below the center of the frame 10. The furnace is fixedly provided with a boss 21 for supporting the rotation thereof.

Inside the boss 21, the pedals 20 are fixed to both ends, and the shaft 22 is freely rotated by a bearing (not shown), and the foot of the occupant is placed on the pedals 20 by applying force to the paddle 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.

And between the main drive sprocket 30 and the pinion 50 is fixed to the reverse drive prevention clutch 80 to rotate together.

The reverse drive prevention clutch 80 flows in a reverse direction while being rotated separately from each other when the pedal 20 is rotated in the forward direction while the second gear member 70 and the main sprocket 30 are coupled to each other. When the pedal 20 is rotated, the reverse rotation is prevented by engaging with each other by the role of the bearing clutch described later.

In addition, the first gear member 60 having the inner ring gear 62 is accommodated in the housing 40.

On the other hand, the inner gear gear 62 of the first gear member 60 is geared to the planetary gear 74 of the second gear member 70, the planetary gear 74 is the pin 75 shaft It is accommodated together in the housing 40 in a state that the shaft is freely installed to rotate.

In addition, 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.

Accordingly, the rotation direction of the first gear member 60 and the second gear member 70 are controlled in different directions, and the first gear member 60 and / or the second gear is driven by the pedal 20. The gear member 70 is selectively driven and is driven by the function of the planetary gear 74 connected therebetween, 1: 1 forward driving, acceleration forward driving speeded up by a predetermined ratio, and the pedal reverse rotation state. Even in the reverse acceleration driving where the bicycle is accelerated forward.

At this time, either one or two of the first gear member 60 and / or the second gear member 70 are fixed so as not to rotate at the same time, or are freely controlled to rotate 1: 1 forward and accelerate pedal operation. A switching control unit 100 is installed on the outside of the housing 40 to allow driving and reverse rotation of the pedal to move forward and accelerate.

That is, the shaft is installed so as to be rotatable in a state in which the inside and the outside of the housing 40 are connected, and the driver cable is easily connected to a position, for example, around the handle of the bicycle, by the release cable 104. By selectively switching the position of the lever 110, the rotation of the first gear member 60 and the second gear member 70 is forward-driven fixed clutch bearing 130 and reverse drive-locked clutch bearing 140 It is controlled by.

The forward drive fixing clutch bearing 130 and the reverse drive fixing clutch bearing 140 are located in the housing 40 and the cap 41, respectively, and have outer diameters of the first gear member 60 and the second gear member 70. By means of fixing or releasing the above 1: 1 forward driving, accelerator pedal operation driving, and the reverse rotation forward acceleration of the pedal is to be carried out, the lever 110 is selected to shift the selection lever around the passenger handle (Not shown) and the release cable 104 are connected, and the rotation angle is switched by pulling the wire in accordance with the operation of the switching selector.

Here, the roles and functions of the forward drive fixing clutch bearing 130 and the reverse drive fixing clutch bearing 140 are the same as those of the clutch bearings 91 and 92 described above.

That is, the outer ring side of the first gear member 60 forms a smooth surface on which the gear is not formed, and thus the clutch bearing 130 having a plurality of balls 131c and springs 131d assembled thereon is fitted. do.

In addition, the outer ring of the second gear member 70 is fitted with another clutch bearing 140 of the same structure.

The clutch bearings 130 and 140 are provided with grooves 131a and 142a having inclined surfaces 131b and 142b at regular intervals, and the balls 131c and 141c are positioned at the positions of the grooves 131a and 142a. Springs 131d and 142d are assembled, respectively.

Thus, when the clutch bearings 130 and 140 are out of rotation with the first gear member 60 and the second gear member 70-when they are out of the directions of the inclined surfaces 131b and 142b-the balls 131c 142c slides along the inclined surfaces 131b and 142b and is moved to a position where the outer diameters of the first gear member 60 and the second gear member 70 become narrower, and the balls 131c and 142c therebetween. ) Is in close contact with the clutch bearings 130, 140 and the first gear member 60 and the second gear member 70 by being tightly pressed to be integrated.

On the other hand, the clutch bearing 140 assembled to the second gear member 70 has an inclined surface 142b opposite to the inclined surface 131b of the clutch bearing 130 assembled to the first gear member 60. It is.

In addition, the clutch pins 151 and 161 of the transfer plates 150 and 160 that flow in accordance with the position of the lever 110 control the positions of the balls 131c and 142c. 60) and the rotation of the second gear member 70 is intermittent so that forward driving, forward acceleration driving and reverse rotation acceleration driving are possible.

The lever 110 is elastically installed by the leaf spring 111 so that the end is controlled by the driver's operation with the release cable 104 to enable forward driving, forward acceleration driving and reverse rotation acceleration driving do.

The conveying plates 150 and 160 are divided into thin plates, and the clutch pins 151 and 161 protrude toward the balls 131c and 142c on the rear surface thereof.

In addition, the groove 112 of the lever 110 is elastically installed on the hook protrusion 163 so as to be recovered in a state in which no external force is applied by the tension spring 133, and is rotatably installed in the housing 40. Hanging projections (156, 166) are respectively protruded toward the (113).

Therefore, the clutch pins 151 and 161 protruding from the back surface of the transfer plates 150 and 160 as a result of the position of the engaging projections 156 and 166 are moved according to the position of the lever 110. By controlling the position of the (131c) (142c) to variably adjust the coupling state of the clutch bearings 130, 140 and the first gear member 60 and the second gear member 70, each step as shown below Guba It is driven.

And the bracket 170 is provided to reduce the risk of damage due to the load received inside the housing 40, the thrust bearing 171 for smooth rotation in the contact portion between the structure and the housing 40 and the cap 41 ) Is good to install.

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. 3 and 6, the lever 110 connected to the release cable 104 by the driver's operation has not yet been pulled and is in the most inclined position, and the locking protrusion 156 according to the position of the lever 110 ( As a result, the pins 151 and 161 protruding from the back of the transfer plates 150 and 160 are inclined surfaces 131b as a result of the positions of the positions 166 being the most open to both sides. 142b has a state in which it is pushed to the deepest depth.

Therefore, since the clutch bearings 130 and 140 are not geared with the first gear member 60 and the second gear member 70, the pedal 20 is connected to a conventional bicycle as shown by the arrow of FIG. Likewise, when a force is applied to advance in the clockwise direction, the clutch bearings 91 and 92 coupled to the shaft 22 at the square end of the pedal 20 are rotated in the same direction.

At this time, by being forcibly coupled between the balls 92c by the direction of the inclined surface 92b of the clutch bearing 92 assembled to the second gear member 70, the inclined surface becomes integral. Another clutch bearing 91 having 92b in the reverse direction is coupled in the same structure as the first gear member 60, so that the 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.

Therefore, the planetary gear 74 is also centered on the pin 75 by attempting to rotate the first gear member 60 and the second gear member 70 together in the same direction when the pedal 20 is driven forward. The pinion 50, which is idle in this supported state and is geared to the inside thereof, is rotated clockwise in the same direction as the pedal 20 in a state in which the pinion 50 is fixed with the main sprocket 30 and the chain 31. Through the driving force will be transmitted to the rear wheel side.

At this time, when the pedal 20 is stopped or reversely rotated, the rotational motion of the pedal 20 may be stopped or reversely rotated as in the conventional bicycle, and in this case, power transmission is not performed.

(Example of pedal forward acceleration driving process)

As shown in FIGS. 4 and 7, the lever 110 connected to the release cable 104 is positioned approximately at the center by the driver's selection operation positioned on the steering wheel.

At this time, according to the position of the lever 110, the clutch pin 151 of the transfer plate 150 when operating the clutch bearing 130 for controlling the first gear member 60 of the locking projections (156, 166). The position of the ball 131c is moved to the elasticity of the spring 131d so as to be able to retreat to the lower side of the position of the inclined surface 131b.

Therefore, since the first gear member 60 is fixed and only the second gear member 70 is rotatable, the pedal 20 is advanced clockwise as in the conventional bicycle as shown by the arrow of FIG. 4. When a force is applied, the clutch bearings 91 and 92 rotate in the same direction.

At this time, since the directions of the inclined surfaces 91b and 92b formed on the clutch bearings 91 and 92 of the reverse ratchet means 90 are installed to be offset from each other, the first gear member 60 and the second gear member 70 are mutually different. The rotation is controlled in the opposite direction.

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, the first gear member (1) is stopped by the latch member 85 and the clutch bearing 92 being rotated together in the same direction while the second gear member 70 is integrated when the pedal 20 travels forward. Clock that is in the same direction as the pedal 20 in the 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 ring 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 backward driving normal driving process)

As shown in FIGS. 5 and 8, when the lever 110 connected to the release cable 104 is moved to be most vertically erected by the driver's selection, the locking protrusions 156 and 166 may be moved according to the position of the lever 110. As a result of the position of the balls 131c and 142c, the clutch pins 151 and 161 protruding from the back of the conveying plates 150 and 160 as a result of the position of the inclined surfaces 131b and 142b. It has a state movable by the elasticity of the spring (131d, 141d) to the lowest of the positions.

Accordingly, the first gear member 60 and the second gear member 70 have a state in which they are mutually coupled with the clutch bearings 130 and 140, respectively, and the pedal 20 as shown in the arrow of FIG. ) Rotates counterclockwise, the clutch bearings 91 and 92 connected to the pedal 20 by the shaft 22 are reversely rotated in the same direction.

At this time, the engagement state in which 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. And the inclined surface 92b of the other clutch bearing 92 having the reverse direction, the ball 92c acts as the position of the narrow inclined surface 92b, so that the first gear member 60 is fixed in the forward direction and the reverse direction. The rotation is set in a state where only the reverse rotation is possible because the ball 91c is movable to the wide inclined surface 91b.

In addition, the second gear member 70 is set to a state in which the reverse rotation is rotatable in the forward direction in a fixed state by the role of the clutch bearing 92.

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, when the pedal 20 is driven in the reverse direction, the planetary gear 74 is supported with the pin 75 as the clutch bearing 91 is rotated together in the reverse direction with the first gear member 60 integrated. The pinion 50 rotates inward and is geared inwardly so that the pinion 50 is rotated in the normal forward direction, and the chain 31 is normally in the opposite direction to the pedal 20 in a fixed state with the main sprocket 30. Through the driving force will be transmitted to the rear wheel side.

At this time, the rotation is accelerated.

According to the present invention as described above, the driver of the bicycle by simply selecting the switching lever provided around the steering wheel can be made to always drive the bicycle forward, 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.

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 an inner ring gear formed along an inner diameter thereof; A second gear member which is in close contact with the first gear member so that the planetary gears meshed with the inner ring gear of the first gear member are rotatably installed around the pin; 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 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 transfer control unit according to claim 1, wherein the switching control unit combines clutch bearings for controlling when the rotations of the first gear member and the second gear member are opposed to each other and flows according to the position of the lever. And a clutch bearing intermittently rotates the first gear member and the second gear member according to the position of the clutch pins of the plates. The lever of claim 3, wherein the lever of the switching control part is controlled by a driver's operation with a release cable connected to an end in a state in which the switching control part is elastically installed by a leaf spring, and an obstacle that protrudes from the transfer plate toward the cut groove of the lever. Driving and accelerator of the bicycle, characterized in that the gears are respectively positioned and controlled. The driving and acceleration device for a bicycle according to claim 3, wherein the clutch bearing is provided with grooves having inclined surfaces at regular intervals, and balls and springs are assembled to positions of the grooves, respectively.