WO2011136503A2

WO2011136503A2 - Rotation control device of pedal for solving dead point

Info

Publication number: WO2011136503A2
Application number: PCT/KR2011/002894
Authority: WO
Inventors: 양순구
Original assignee: Yang Soon-Gu
Priority date: 2010-04-26
Filing date: 2011-04-21
Publication date: 2011-11-03
Also published as: WO2011136503A3

Abstract

The present invention is to change a pedal effort, which is wasted without being changed to rotational energy, into rotatory power by controlling a pedal shaft rotation of bicycle pedals, such that a power point of the pedal effort may move to front ends of a pedal body instead of to a pedal shaft, whereby the direction of power at a dead point can be changed. Thus, when a stopped bicycle from which inertial energy has not been created yet is started or when rotatory power should be produced by using only the pedal effort on an uphill road or the like on which the inertial energy has disappeared, the pedal effort can be changed into the rotatory power even in a dead-point zone. Further, in case when a pedal shaft rotation, which was controlled to increase rotatory strength, has to be turned into back pedaling in order to avoid various risks or obstacles on the road which may occur suddenly, or if the pedal shaft rotation is rather a hindrance to cycle on a downhill road or during high-speed cycling or the like, the controlled pedal shaft rotation is released to enable a free pedal shaft rotation in both directions on pedals, thereby implementing safe cycling.

Description

Pedal rotation control to eliminate dead point

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axial rotation control device for a bicycle pedal, and in particular, to control the axial rotation of a pedal body around a pedal shaft of a bicycle pedal so that the force point of the pedaling force is not the pedal shaft, but the front of the pedal footrest. By moving to the end, the direction of the force is in line with the point of action and the point of action to change the direction of the force at the dead point where the linear kinetic energy is not converted to the rotational kinetic energy. By changing the wasted effort to torque that turns the wheels, the dead-point section when you need to turn only on the pedal force, such as when you start a stationary bicycle with no inertia energy or when driving uphill when the inertia energy disappears. Of pedal rotation control to eliminate dead spots will be

A bicycle is a machine in which a person crosses two feet and presses the pedals on both sides to rotate the crank, and the rotating kinetic energy converted into the crank's circular motion causes the rear wheel to move forward. In other words, in order to convert a person's foot power into a rotational force, the driver must axially rotate the crank by stepping on a pedal fixed to the end of the crank arm.

The pedal should rotate the pedal shaft 360 ° in both directions in accordance with the change of the rotation angle of the crank arm which rotates in both directions at 360 °, which means that the pedal foot is parallel to the sole of the shoe no matter where the crank rotation angle is located. This is to keep the ankle of the pedaling rider to comply with the crank rotation angle.

As described above, when the pedal rotates freely on the pedal shaft, the force point of the pedal force transmitted to the crank arm serving as the lever is always caught on the pedal shaft, and the direction of the pedal force is in the same line as the force point and the operating point according to the crank shaft rotation. Force loss occurs at the top dead center and the bottom dead center, and this dead center section is the hardest for the driver.

The driving force on a flat or uphill road is the inertial energy generated by human response and acceleration, and it is not a problem because the dead point can pass through the dead point on the plain where there is enough inertial energy, but it is not a problem. When the inertial energy is dissipated, such as running in the wind blowing in the wind, the dead zone can not be driven anymore because even the stepping force cannot be converted into rotational force. This demonstrates that the pedal position at the moment when the bicycle stops climbing the ramp no longer stops at the top dead center and the bottom dead center.

Uphill driving, in particular, involves pushing a significant weight (e.g. 80 kg), combined with the weight of the rider (e.g. 65 kg) and the weight of the bike itself (e.g. 15 kg), to a higher elevation along the ramp (e.g. 10 degrees). In order to prevent the bicycle from standing, it requires a force above the minimum critical torque that can push the weight (e.g. 80kg) to the incline (e.g. 10 degrees). It is almost impossible to produce a force above the critical torque that can climb the ramp against gravity in the section.

To overcome this, various alternatives have been tried, and the most widely used method is a gear shift device (a device which applies a principle such as lengthening or shortening the lever by adjusting the gear ratio). It is used for driving, but it does not solve dead points.

The dead point occurs when the direction of force reaches a straight line between the force point and the action point in the process of converting the linear motion to the rotational motion. It is not possible to solve the problem by the magnitude of the force and the length of the lever. It is possible to change the direction of the force in order to eliminate dead points that are indispensable in the process of changing a person's effort into crankshaft rotation. To do this, cyclists and enthusiasts push the pedaling at the dead center section forward instead of down stroke, downstroke at the top dead center, and down at the bottom dead center. To reduce the dead spot and increase the efficiency of the force, but it is difficult for the general public to do so, and the ankle movement itself Because you are pushing and pulling, you have a risk of injury, such as your foot slipping on the pedals, hurting the shin, or falling off.

To solve this problem, we have developed and used clipped pedals (toeclipped pedals with shoe couplings, clipless pedals, etc.). It also causes other problems, such as falling and hurting, and adds to the economic burden of having a clip pedal and dedicated shoes.

In order to fundamentally solve the dead point caused by the force point, the action point, and the direction of the force, it is necessary to change the direction of the force.In order to change the direction of the force, the pedal is located off the dead point line. What is necessary is just to displace to the end of a pedal board, and to rest a pedal shaft rotation in order to move a force point to the end of a pedal board rather than a pedal shaft. This causes the force point and the direction of the force on the deadline to be out of the dead center section and immediately obtain rotational force.

As a prior art for solving dead points in this way, there is a method of transforming the crank arm into a curved shape, or avoiding the dead point by manipulating the rotation angle of the crank arm immediately before the top dead center. However, at the bottom dead center, it causes the same negative effect as the effect obtained at the top dead center, so the effect is insignificant and not practical. No, the marketability is halved because it must be produced with crank sets (assemblies of crank arms, chain rings, brackets, etc.).

The object of the present invention is to solve the dead point generated in the conventional two-way pedal shaft rotation pedal to control the pedal shaft rotation to obtain a rotational force even in the dead point.

In addition, the pedal shaft rotation control, such as downhill or high-speed driving, is hindered when reverse pedaling (back pedaling) is required to avoid accidental roadblocks or other hazards. In this case, the purpose is to release the pedal shaft rotation control so that the pedal can rotate freely in both directions to ensure safe driving.

In order to achieve the above object, the present invention suppresses the pedal shaft rotation in the dead center section where the direction of the pedal force and the pedal shaft and the crank shaft coincide with each other. At the bottom dead center, a “ㅗ” shaped angle is formed. In the conventional bidirectional pedal shaft rotating pedal, the force point applied to the pedal shaft is displaced to the end of the pedal foot where the rider's force is actually applied. Eliminate This means that the length of the crank arm, which acts as a lever by always fixing the pedal shaft rotation in one direction, is increased from the end of the crank shaft pedal to the end of the crank shaft pedal to increase the efficiency of the force. The purpose, application principle, structure and operation method are different from the one-way clutch pedal.

According to the present invention, the pedal shaft rotation control device converts the pedaling force, which cannot be used in the dead point section, to instantaneous rotational force, so that it is possible to drive a ramp uphill or a headwind without requiring inertia energy.

This is not only the increase of the rotational force is much larger than the conventional method of solving the dead point of the crank arm or the rotation angle of the crank arm, but also the crank set assembly should be made in order to be compatible with existing products. It is economical for any bicycle to be compatible by simply replacing this pedal with the pedal shaft fastening part of the crank arm.

The present invention is also based on the bidirectional axial rotation pedal to minimize the control of the pedal shaft rotation only when necessary to enable a smooth stroke as a conventional pedal, even if the state of inhibiting the pedal shaft rotation urgently reverse When pedaling is required, the pedal can be controlled by simply sliding the pedal from side to side to allow safe driving.

In addition, the pedal shaft rotation can be controlled easily without taking off the foot even when the pedal is applied or when the shoe is attached to the pedal, so it can be applied to all kinds of pedals including flat pedals and clip pedals. And more practical.

In addition, the present invention has a positive effect at both the top dead center and the bottom dead center because the dead center is eliminated by controlling the pedal shaft rotation of the pedal rather than the crank arm, and only the pedal is not a crank set (assembly). Since it needs to be replaced, it is advantageous in terms of production cost and there is no compatibility problem, so it has a large marketability.

Figure 1a is a cross-sectional view of the main part of the pedal according to the invention and Figure 1b is an operating state of Figure 1

FIG. 2A shows an operating state for the main part in FIGS. 1A and 1B;

3, a and 3b are views for explaining the operation of the pedal shaft rotation control device

4A and 4B are top views of the state of FIGS. 3A and 3B;

FIG. 5A is a view showing a pedal shaft according to the present invention, and FIG. 5B is a view of the drawing of FIG. 5A viewed from the right, in particular, to show the locking protrusion 21 and the locking protrusion groove 22.

Figure 6a is a plan view for showing the locking pin device portion, Figure 6b is a front view of Figure 6a, Figure 6c is a view seen from the left side of Figure 6b.

The main configuration for achieving the above object of the present invention, the pedal shaft bearing including a bearing member between the pedal shaft 11 and the shaft tube 12 so as to smoothly rotate the two-way pedal shaft around the pedal shaft (11) In the pedal having a pedal body consisting of a pedal frame 13 on the outer periphery, integrally formed on the pedal shaft 11 and having a engaging projection 21 and the engaging projection groove 22 formed in a saw blade shape A locking projection 20; Engaging with the engaging projection 21, the engaging pin 31 for controlling the pedal shaft rotation, the engaging pin elastic member 32 for elastically pressing the engaging pin 31 and the engaging pin elasticity It characterized in that it comprises a; locking pin device portion 30 having a locking pin sliding groove 33 for receiving the portion (32). In addition, the engaging projection 21 is made in the shape of a saw blade to be engaged by the engaging with the engaging pin 31, the engaging surface so that the engaging projection 21 is in close contact with the engaging pin 31. It is formed at right angles, characterized in that the back surface is formed as an inclined surface so that the locking pin 31 can smoothly cross the locking projection 21 when the pedal rotates in the opposite direction of the crank shaft rotation. The locking pin sliding groove 33 has a locking pin 31 inserted into the locking protrusion 22 to engage the locking protrusion 21 so that the pedal rotates in the opposite direction to the crank shaft rotation. When the locking pin 31 is pushed backward from the rear surface of the locking projection 21 fixed to the pedal shaft 11, the groove is formed to a depth enough to retract the locking pin 31, The locking pin elastic member 32 is the locking pin 31 to the locking projection (21) When it enters into the locking pin sliding groove (33), so as not to loosen and tension, as soon as the pushing force of the locking projection 21 is extinguished, the locking pin 31 is inserted into the locking projection groove 22 immediately and the locking projection (21) The occlusal with the restoring, it is characterized in that the installation between the inside of the engaging pin 31 and the engaging pin sliding groove 33, the pedal bearing includes a bearing bearing 53, bearing shaft outer ring 54 ) Is equipped with a retainer (55) to hold the bearing bearing (53), and is formed in the bearing body formed in the pedal body and installed in the government (51), but the bearing inner ring is removed, the bearing and the government (51) ) Is integrally formed with the shaft tube (12) surrounding the outer periphery of the pedal shaft (11), and configured to slide the pedal body in which the locking pin (31) is embedded to the left and right for engagement and isolation with the locking projection (21). Characterized in that, the pedal frame ( Sliding levers (15a, 15b) protrudingly formed on both sides of the upper end of 13), the engaging pin 31 is characterized in that the engagement with the locking projection 21 is easily performed.

Other features and configurations other than those described above will be further described below.

The pedal of the bicycle functions as a handle of the crank arm to convert a person's effort into rotational motion. If the pedal is turned by hand, the direction of the force can rotate the crank arm in the direction perpendicular to the crankshaft, thereby maximizing the efficiency of the force and there will be no dead point, so the torque will always be obtained. However, the human foot is not structurally suitable for the rotational movement, unlike the hands. Especially when pedaling with weight on the pedal to increase the force, the direction of the step of the pedaling force can be more up and down. At this time, the step force is not converted to rotational force.

This is because the conventional pedal rotates the pedal shaft in both directions, so the force point of the pedaling force is always caught on the pedal shaft, and it becomes stuck to the crank arm. will be. In order to avoid the trapping of the dead point, which is the evaporation zone of the force, if the pedal shaft rotation in the forward and backward directions is suppressed in the dead center section, the force point of the pedal force on the pedal shaft due to the conventional bidirectional pedal shaft rotation is at the end of the pedal footrest. Is moved, and a new line of action is created from the moved force point, and the pedal force is immediately converted into rotational force by the line of action of the new force. For example, if the length of the crank arm is 17cm and the front and rear length of the pedal is 12cm, the distance of the force point moved from the center of the pedal is about 6cm, and the line of action of the force is about 10cm away from the dead point. Rotation torque is applied at the position of about 10 ㅀ off to improve the torque.

Hereinafter, the configuration of the present invention to enable the above operation will be described in detail with reference to the accompanying drawings.

First, as shown in Figure 1a, the pedal shaft 11 is fixed in the middle of the pedal frame 13, the shaft tube 12 is formed on the outer periphery. At both ends of the shaft tube 12, a pedal bearing 52 having a bearing outer ring 54 is installed in the receiving groove 33 formed in the pedal frame 13. As shown in FIG. Pedal bars 14 are formed in front and rear of the pedal frame 13. The pedal frame 13 is mounted on the pedal shaft 11 and installs a washer 45, a lock nut 44, a cap nut 43, and the like, for fixing thereof.

1A and 1B, the bearing bearing 53 is provided between the pedal shaft 11 and the shaft tube 12 so as to smoothly rotate the two-way pedal shaft around the pedal shaft 11 as in the conventional pedal. Pedal shaft support 52 having a) is installed, but the locking pin device portion 30 is provided with a locking pin 31 protruding from the side.

The pedal shaft 11 has a saw blade-shaped locking protrusion 21 by placing a locking protrusion 20 on a portion of the pedal shaft 11 so that the pedal shaft 11 engages with the locking pin 31 that can suppress rotation of the pedal shaft. To form. This structure is identical to the mechanical operation of ratchet. That is, it is a mechanical structure that can apply force in only one direction

The locking pin 31 of the locking pin device unit 30 mounted on the pedal body is inserted into the locking protrusion groove 22 of the locking protrusion 20 formed on the pedal shaft 11 to engage with the locking protrusion 21. To this end, the pedal shaft support 52, which is attached to the shaft tube 12 surrounding the pedal shaft 11, is attached to the pedal body in which the locking pin device 30 with the locking pin 31 is attached. As shown in FIG. 2A, sliding

levers

15a and 15b are mounted on the pedal frame 13 so as to slide left and right of the shaft 11.

Even when the foot pedal is restrained from turning freely back and forth around its axis, the pedal body must be able to rotate in the opposite direction to the crankshaft rotation direction so that the pedal foot can be kept parallel to the shoe. do. For this purpose, the back surface of the locking pin 31 and the locking protrusion 21 is formed as a slope, and the locking pin device is sufficiently pushed by the pushing force of the locking protrusion 21. It has a locking pin sliding groove 33 that can be pushed into the locking pin 31 in the part 30, and the locking pin 31 is embedded in the space so that the locking pin 31 can be tensioned. , As soon as the pushing force of the catching protrusion 21 disappears, the catching pin 31 is inserted into the catching protrusion groove 22 again to be immediately engaged with the catching protrusion 21.

The bearing bearing 53 removes the inner ring of the pedal bearing 52 so that the driver can easily engage and separate the locking pin 31 and the locking protrusion 21 without removing the pedal from the pedal. The outer surface of the shaft 11 was slid left and right, and a retainer 55 was installed to hold the bearing bearing 53 on the bearing outer ring 54.

In this way, the pedal shaft rotation can be freely fixed or freely rotated even while driving, and when used as a bidirectional pedal shaft rotation pedal during normal use to eliminate dead points or to obtain greater rotational force, as shown in FIGS. 2A and 2B. By simply sliding the sliding lever 15b protruding on the top of the pedal frame 13 toward the crank arm, the pedal shaft rotation can be easily suppressed to move the force point applied to the pedal shaft 11 to the front end of the pedal frame 13. The force point and the direction of the force were deviated from the dead point, and in the downstroke section, the lever (the length of the crank arm) was lengthened to obtain a large rotational force with a small force.

To control the rotation of the pedal shaft in order to increase the rotational force, in order to avoid sudden obstacles and when reverse pedaling is necessary for various reasons, the sliding lever 15a protruding on the upper end of the pedal frame 13 is slid outward. By separating the locking protrusion 21 and the locking pin 31, it is possible to rotate the pedal shaft in both directions as in the conventional pedal.

For reference, reference numeral 41, which is not described in FIG. 5A, is a crank arm tightening screw part, and reference numeral 42 is a pedal body tightening screw part.

The apparatus according to the invention is not limited to flat pedals, but can be applied to all pedals which are to rotate the pedal shaft, and is particularly useful in toe clip pedals or clipless pedals that cannot be lifted from the pedals while driving.

Detailed description for the practice of the invention is an example of applying the principles of the present invention, the present invention is not limited to the above drawings and descriptions thereof, the claims attached to those skilled in the art to which the present invention pertains It includes all the modified embodiments that can be modified and carried out without departing from the spirit and technical scope of the present invention described in.

The present invention has the effect of efficiently applying force at both the top dead center and the bottom dead center of the pedal because it controls the pedal shaft rotation of the pedal, not the crank arm, and produced by replacing only the pedal, not the crank assembly It is advantageous in terms of cost and there is no compatibility problem.

Claims

It consists of a pedal bearing including a bearing member having a bearing outer ring 54 between the pedal shaft 11 and the shaft tube 12 so as to smoothly rotate the two-way pedal shaft around the pedal shaft 11. In the pedal having a pedal body consisting of (13),

A locking protrusion 20 integrally formed on the pedal shaft 11 and having a locking protrusion 21 and a locking protrusion groove 22 formed in a saw blade shape;

Engaging with the engaging projection 21, the engaging pin 31 for controlling the pedal shaft rotation, the engaging pin elastic member 32 for elastically pressing the engaging pin 31 and the engaging pin elasticity Rotation control device of the pedal for dead-spots, characterized in that it comprises a; locking pin device portion 30 having a locking pin sliding groove 33 for receiving the portion (32).
The method of claim 1,

The locking projection 21 is formed in the shape of a saw blade so that the locking is made by the coupling with the locking pin 31, the coupling surface is perpendicular to the locking surface so that the locking protrusion 21 can be in close contact with the locking pin 31. And the back surface is formed as an inclined surface so that the locking pin 31 can smoothly cross the locking projection 21 when the pedal rotates in the opposite direction of the crankshaft rotation. Pedal Rotation Control.
The method of claim 1,

The locking pin sliding groove 33 is a pedal pin rotation in the opposite direction of the crankshaft rotation, while the locking pin 31 is inserted into the locking projection groove 22 and engaged with the locking projection 21. When the locking pin 31 is pushed backward from the rear surface of the locking projection 21 fixed to the pedal shaft 11, the groove is formed to a depth enough to retract the locking pin 31 Pedal rotation control for dead spot elimination.
The method of claim 1,

The locking pin elastic member 32 is not loose when the locking pin 31 is pushed by the locking protrusion 21 to enter the locking pin sliding groove 33, the pushing force of the locking protrusion 21 is dissipated As soon as the locking pin 31 is inserted into the locking projection 22 immediately, the insertion between the inside of the locking pin 31 and the locking pin sliding groove 33 so that the occlusion with the locking protrusion 21 is restored. Pedal rotation control for dead spot elimination.
The pedal pedal of claim 1, wherein

Including bearing bearing (53), having a retainer (55) to hold bearing bearing (53) on bearing outer ring (54), and bearing bearing (51) formed on the pedal body and being installed in bearing (51) bearing inner ring It is made of this removed structure, the bearing portion 51 is formed integrally with the shaft tube 12 surrounding the outer periphery of the pedal shaft 11, the locking pin 31 for the mating and isolation with the locking projection 21 Pedal rotation control device for dead-point relief, characterized in that configured to slide the inherent pedal body left and right.
The method of claim 1,

Sliding levers (15a, 15b) protruding on both sides of the upper end of the pedal frame 13, the deadlock is characterized in that the engaging pin 31 is easy to occlude the operation of the engaging projection 21 is made. Pedal's rotation control.