WO2010150959A1

WO2010150959A1 - Bicycle driving device

Info

Publication number: WO2010150959A1
Application number: PCT/KR2010/000573
Authority: WO
Inventors: 이창중
Original assignee: Lee Chang Jung
Priority date: 2009-06-24
Filing date: 2010-01-29
Publication date: 2010-12-29
Also published as: KR100933303B1

Abstract

The present invention relates to a bicycle driving device wherein a movement interval of crank arms connected to a crank shaft for driving the bicycle may be controllable so that a user may drive the bicycle smoothly and effectively. In a bicycle driving device including a driving section connected to a chain for transmitting a rotation force to the wheels, crank arms coupled with a side surface and the other side surface of the driving section for allowing the smooth rotation of the driving section, and pedals coupled with the crank arms for the feet of a user to be placed thereon, the crank arms are formed of first crank arms coupled with the driving sections and second crank arms rotatively coupled with the first crank arms, wherein the first crank arms and the second crank arms are coupled by variable coupling elements. According to the present invention, first, the bicycle driving device for smoothly driving a bicycle comprises the crank arms for rotating the driving sections, and the crank arms includes the second crank arms rotatively coupled with the first crank arms, so that the rotation radius of the crank arms, which rotate by the feet of the user, may be effectively controlled, thereby driving the bicycle smoothly and effectively. Secondly, the lengths of the first crank arms and the second crank arms are extended in the longitudinal direction so that rotation force may be effectively transmitted to the driving section when the user wants to transmit the rotation force of the second crank arms to the driving section by actively rotating the pedals of the second crank arms by his feet. Conversely, the rotation radius of the crank arms rotating with respect to the driving section is minimized by the variable coupling elements, which connect the first crank arms to the second crank arms, so that the bicycle may be effectively driven, when the user is at a position in which he does not want to transmit the rotation force to the driving section through the movement of the second crank arms. Thirdly, the crank arms are coupled with the driving section for transmitting the rotation force to the driving section in such a manner that the rotation radius of the crank arms is minimized. Therefore, the driving section is effectively rotated in response to the rotation of the crank arms while preventing unnecessary manipulation by the user who rotates the crank arms, thereby preventing the user from feeling exhausted easily. Fourthly, the second crank arms and the pedals may be conveniently coupled in use after separating the pedals from conventional crank arms. Therefore, the bicycle driving device may be conveniently and effectively used without coupling any complicated equipment, reducing installation costs thereof and exhibiting cost reduction. Even when the cranks arms are damaged partially during use, the damaged parts may be conveniently exchanged with new ones, thereby increasing the convenience of use and reducing costs.

Description

Bicycle drive

The present invention relates to a bicycle drive device, and more particularly, in the configuration of a drive unit connected to the chain to transmit the rotational force to the wheel, and a crank arm connected to the drive unit to transmit the rotational force to the drive, Since the first crank arm and the second crank arm are rotatably coupled through the variable coupling member, even when the crank arm is rotated to transmit the rotational force to the driving unit, the rotation radius of the crank arm rotating around the driving unit is minimized. The present invention relates to a bicycle driving device capable of achieving efficient bicycle driving.

In general, a bicycle is a two-wheeled vehicle that can be moved through a wheel that is rotated by human power.

Such a bicycle has a frame forming a frame of the bicycle, a front wheel and a rear wheel rotatably coupled to the frame, a handlebar coupled to adjust the direction of the front wheel, and coupled to the rear wheel to the rear wheel by the user's force It is generally composed of a drive unit for transmitting the rotational force.

At this time, the most important thing to drive the bicycle with the user's force is the drive unit, as shown in Figure 1, the drive unit 100 is connected to the chain 20 of the rear wheel 10, and to the drive unit 100 Pedal 300 is provided to seat the user's foot to transmit the rotational force is composed of a crank arm 200 is rotatably coupled to the drive unit 100,

In particular, the drive unit 100 and the crank arm constituting the conventional bicycle, as shown in FIG. 2, the user seats the foot on the pedal 300 to rotate the crank arm 200 about the drive unit 100. In this case, the crank arm 200 is configured to rotate while forming the same rotation radius around the driving unit 100.

That is, when the conventional crank arm 200 is rotated to transmit the rotational force to the driving unit 100, even when the rotational force is not transmitted to the driving unit 100, the same rotation radius around the driving unit 100 is achieved. By being configured to rotate by the user's foot to achieve the user has to constantly transmit unnecessary force to the crank arm 200, accordingly, there is a problem that the user driving the bicycle can easily feel fatigue.

In addition, when the bicycle is to be driven, the radius of rotation of the crank arm 200 is rotated to form the same rotation radius around the driving unit 100 so that the user must continuously transmit unnecessary force to the crank arm 100. Of course, there was a problem that can not achieve efficient bicycle driving accordingly.

The present invention has been made to solve the above-described problems, the rotation radius of the crank arm connected to transmit the rotational force to the drive unit when rotating the crank arm connected to the drive to drive the bicycle is minimized by the user's feet It is configured to provide a bicycle driving device that can achieve an efficient bicycle drive by transmitting the rotational force to the drive unit conveniently and efficiently even if you want to rotate the crank arm through the user's foot to transmit the rotational force to the drive unit.

Another object of the present invention is to separate the pedal from the conventional crank arm, and to configure the second crank arm and the pedal to be conveniently combined and used by the user's choice, thereby enabling convenient and efficient use without complex equipment combination. In addition, even if any one part of the crank arm is damaged during use, only the damaged part can be replaced and used, thereby providing convenience and convenience, and thus providing a bicycle driving device that can reduce costs. will be.

In order to achieve the above object, the present invention, the drive unit is connected to the chain to transmit the rotational force to the wheel, the crank arm coupled to smoothly achieve the rotation of the drive unit on one side and the other side of the drive unit, the user to the crank arm A bicycle drive device comprising a pedal coupled to seat the foot of the crank arm, the crank arm includes a first crank arm coupled to the drive unit, and a second crank arm rotatably coupled to the first crank arm, The first crank arm and the second crank arm may be coupled through a variable coupling member.

In this case, the first crank arm may form a coupling protrusion coupled to one side of the variable coupling member, and the second crank arm may be configured to form a coupling groove in which the variable coupling member is seated and fixed.

The variable coupling member may include a tubular body seated and coupled to the coupling groove, a forward rotation prevention clutch fixed to the inside of the body such that the coupling protrusion penetrates, and a coupling hole corresponding to the coupling protrusion. And a fixing plate which is formed and fitted into the protruding portion of the coupling protrusion coupled through the forward rotation prevention clutch, and is coupled to the forward rotation prevention clutch when coupling between the first crank arm and the second crank arm. After the protrusion is coupled, the first crank arm is rotated according to the rotation of the second crank arm, and the second crank arm is coupled to rotate in the opposite direction to the rotation direction of the first crank arm through the forward rotation prevention clutch. Can be.

In addition, the forward rotation prevention clutch is connected to the engaging portion of the first crank arm coupled to transfer the rotational force of the second crank arm to the first crank arm, and the connecting portion and the rotation direction of the second crank arm And a clutch coupled via a plurality of balls to the outside of the connecting portion to prevent the corresponding rotation thereof, wherein the second crank arm is coupled to the second crank arm through the clutch when the first crank arm and the second crank arm are engaged. The first crank arm may be coupled to rotate in a reverse direction.

In addition, the connection portion is formed in the mounting groove along the longitudinal direction, the coupling projection is provided with a fitting projection corresponding to the mounting groove, the coupling hole is provided with a fitting groove for fitting the fitting protrusion. Can be.

In addition, the upper part of the pedal may be further provided with a pedal cover detachably coupled to the pedal so that the user is firmly supported even when the user's foot is seated in the rotation of the second crank arm.

The present invention as described above can obtain the following effects.

First, as a bicycle driving device for smoothly driving a bicycle, the radius of rotation of the crank arm that is rotated through the user's foot by being composed of a second crank arm that is rotatably connected to the first crank arm. Can be adjusted efficiently to achieve smooth and efficient bicycle driving.

* Second, if the user is to smoothly rotate the pedal provided in the second crank arm through the foot to transfer the rotational force of the second crank arm to the drive unit length of the first crank arm and the second crank arm is the length It is configured to extend in the direction can transmit a smooth rotational force to the drive unit, on the contrary, in the position where the flow of the second crank arm does not transmit the rotational force to the drive unit the crank arm and the second crank arm By adjusting the rotation radius of the crank arm rotated around the drive unit through a variable coupling member for connecting to achieve an efficient bicycle drive.

Third, it is configured to be connected to the drive unit to minimize the rotation radius of the crank arm transmitting the rotational force to the drive unit can prevent unnecessary operation of the user to rotate the crank arm while rotating the drive efficiently during the rotation of the crank arm bicycle It is possible to prevent the user driving the easily feel fatigue.

Fourth, after separating the pedal from the conventional crank arm, the second crank arm and the pedal can be conveniently combined and used, so that it can be used conveniently and efficiently without the need for complex equipment combination, thereby achieving the effect of installation cost and cost reduction. In addition, even when a part of the crank arm is damaged during use, it is possible to conveniently replace only the damaged part can be used for convenience as well as to reduce the cost accordingly.

1 is a side view showing a conventional bicycle.

Figure 2 is a schematic diagram showing an operation state of the drive unit and the crank arm forming a conventional bicycle.

Figure 3 is a side view showing a coupling state of the drive unit, the first crank arm and the second crank arm of the bicycle constructed in accordance with the present invention.

Figure 4 is a perspective view of the main portion extracted coupling showing the coupled state of the variable coupling member according to the present invention.

5 and 6 is an enlarged view of the main portion extract showing the rotational state of the variable coupling member according to the present invention.

7 is an operating state diagram showing an operating state of the drive unit and the crank arm according to the present invention.

Figure 8 is a main part excerpt action state diagram showing the radius of rotation of the crank arm acting according to FIG.

10: wheel 20: chain

100: drive unit 200: crank arm

210: first crank arm 211: engaging projection

211a: fitting protrusion 220: second crank arm

221: coupling groove 300: pedal

310: pedal cover 400: variable coupling member

410: body 420: anti-rotation clutch

421: connecting portion 421a: seating groove

422: clutch 430: fixed plate

431: Fitting groove B: Ball

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings as follows.

Prior to the above description, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

First, the configuration will be described with reference to FIGS. 3 to 8.

Crank arm 200 coupled to the drive unit 100 and the chain 20 to transmit the rotational force to the wheel 10, and to smoothly rotate the drive unit 100 on one side and the other side of the drive unit 100. And a pedal 300 coupled to the crank arm 200 so that the user's foot is seated, the crank arm 200 is coupled to the driving unit 100. 210 and a second crank arm 220 rotatably coupled to the first crank arm 210, wherein the first crank arm 210 and the second crank arm 220 are variable coupling members ( It is configured to be coupled through 400).

For example, as shown in FIGS. 3 and 4, the crank arm 200 includes a first crank arm 210 coupled to the driving unit 100 and a variable coupling member 400 to the first crank arm 210. The second crank arm 220 is rotatably coupled through.

At this time, the first crank arm 210 is configured by forming a coupling protrusion 211 protruding to one side to facilitate the coupling on one side of the variable coupling member 400.

The coupling protrusion 211 may be configured in the same way as the coupling protrusion (not shown) coupled to the pedal 300 in the configuration of the conventional crank arm 200, and is seen in the conventional crank arm 200. In the case of applying the invention, after separating the pedal 300 connected to the crank arm 200, the second crank arm 220 is connected to the first crank arm 210 through the variable coupling member 400. You can configure the connection.

This, after separating the pedal 300 from the conventional crank arm 200 is to be able to conveniently combine the second crank arm 220 through the variable coupling member 400.

The second crank arm 220 is formed by forming a coupling groove 221 inward to fix the variable coupling member 400.

4, the coupling groove of the second crank arm 220 when the first crank arm 210 and the second crank arm 220 are to be coupled through the variable coupling member 400. The variable coupling member 400 is installed to be firmly coupled to 221, and then the coupling protrusion 211 of the first crank arm 210 is coupled to one side of the variable coupling member 400.

Accordingly, the first crank arm 210 and the second crank arm 220 may be firmly coupled to each other through the variable coupling member 400.

In addition, the variable coupling member 400, as shown in Figure 4, the tubular body 410 is seated and coupled to the coupling groove 221, and the coupling protrusion 211 through the body 410 to be coupled through The anti-rotation clutch 420 is fixed to the inner side of the coupling protrusion 211 formed through the anti-rotation clutch 420 by forming a coupling hole 431 corresponding to the engaging projection 211. It consists of a fixed plate 430 is fitted to the protrusion of the).

That is, this configuration is connected to the first crank arm 210 even when the first crank arm 210 and the second crank arm 220 form a firmly coupled state through the variable coupling member 400. The second crank arm 220 is to be rotated in the reverse direction.

For example, when the second crank arm 220 is coupled to the first crank arm 210, the second crank arm 220 after the coupling protrusion 211 is coupled to the forward rotation preventing clutch 420. Even when the first crank arm 210 rotates according to the rotation of the crank arm 220, the second crank arm 220 reverses the rotation direction of the first crank arm 210 through the forward rotation preventing clutch 420. It will be combined so that it can be rotated.

In order to achieve this, the forward rotation preventing clutch 420 is a connection portion 421 to which the coupling protrusion 211 is coupled so as to smoothly transfer the rotational force of the second crank arm 220 to the first crank arm 210. ) And a plurality of balls B to the outside of the connection part 421 to prevent the coupling protrusion 211 of the first crank arm 210 coupled to the connection part 421 to be rotated forward to correspond to the rotation direction. It is composed of a clutch 422 is coupled through the ().

That is, as shown in Figures 5 and 6, the rotation of the engaging projection 211 of the first crank arm 210 coupled to the variable coupling member 400 through the clutch 422 is rotated in the reverse direction This is possible, but the coupling is configured to be impossible to rotate in the forward direction corresponding to the rotation direction of the second crank arm 220.

As such, in the present invention, even when the first crank arm 210 and the second crank arm 220 are coupled to each other and rotate about the driving unit 100 through the clutch 422, the second crank arm 220 may rotate. ) Is configured to be rotated in the opposite direction to the rotation direction of the first crank arm (210).

In detail, as shown in FIG. 7, the coupling protrusion 211 of the first crank arm 210 to the variable coupling member 400 firmly coupled to the coupling groove 221 of the second crank arm 220. ) Is coupled through and the first crank arm 210 is rotated in accordance with the rotation of the second crank arm 220, as shown in Figure 5, a plurality of balls (B) to the outside of the connection portion 421 When the clutch 422 is reversely rotated through the clutch 422 coupled through the ball), the ball B rotates smoothly inside the body 410 so that the first crank arm 210 may be rotated. The connecting portion 421 coupled with the coupling protrusion 211 may achieve a reverse rotation smoothly. In contrast, the connecting portion 421 coupled with the coupling protrusion 211 of the first crank arm 210 rotates forward. If you want to see the ball (B) provided in the clutch 422 as shown in Figure 6, the inside of the body 410 Affixed by controlling the rotation of the clutch 422 to which the connecting portion 421 also could not achieve normal rotation.

Accordingly, when the coupling protrusion 211 of the first crank arm 210 is coupled to the variable coupling member 400 inserted into and fixed to the coupling groove 211 of the second crank arm 220, In the case of rotating in the reverse rotation direction can be rotated by the smooth rotation of the clutch 422, when rotating in the forward rotation direction is to be controlled by the clutch 422.

Therefore, as shown in FIGS. 7 and 8, the second crank arm 220 is rotated to transmit the rotational force to the driving unit 100, and at the same time, the second crank arm 220 is rotated according to the rotation of the second crank arm 220. When the first crank arm 210 is to be rotated, the second crank arm 220 rotates about the driving unit 100 and rotates in the opposite direction to the rotation direction of the first crank arm 210. As in 8, it is possible to minimize the overall radius of rotation of the second crank arm 220, the user's foot is seated.

In addition, when the first crank arm 210 and the second crank arm 220 are coupled through the variable coupling member 400, the first crank arm 210 and the second crank arm 220 are coupled to each other. As shown in FIG. 4, the connection part 421 is provided with a seating groove 421a along a longitudinal direction so as to be more firmly coupled through the farewell coupling member 400, and the coupling protrusion 211 has a A fitting protrusion 211a corresponding to the seating groove 421a is provided, and the coupling hole 431 is provided with a fitting groove 431a in which the fitting protrusion 211a is forcibly fitted.

This is as shown in FIG. 4, and in this case, in particular, the fixing plate 430 fitted to the protrusion of the coupling protrusion 211 penetrating the connection part 421 is the first crank arm 210 and the second. When the second crank arm 220 is rotated in the reverse direction of the first crank arm 210 after the crank arm 220 is coupled is configured to not inhibit the rotation of the second crank arm 220 Most preferred.

In addition, the pedal cover 310 is detachably coupled to the pedal 300 to be firmly supported even when the second crank arm 220 rotates after the user's foot is seated on the upper part of the pedal 300. Is further provided.

7 and 8, when the user rotates the second crank arm 220 by seating a foot on the pedal 300 of the second crank arm 220. The reverse rotation of the two crank arms 220 is to be made smoothly.

In addition, the pedal cover 310 coupled to the pedal 300 is not shown in detail in the present invention, but is preferably configured to be connected in a form surrounding the feet of the user seated on the pedal 300, the pedal ( Of course, any configuration can be applied as long as it can be detachably coupled to 300).

In addition, the pedal 300 coupled to the second crank arm 220 may be connected through another variable coupling member 400 having the same configuration as the variable coupling member 400. .

Such a configuration prevents the pedal 300 from being rotated forward even when the second crank arm 220 is rotated about the driving unit 100 through a user's foot to more smoothly perform the second rank arm ( This is to transfer the rotational force of the 220 to the first crank arm 210.

As described above, the present invention can minimize the radius of rotation of the crank arm to transmit the rotational force of the crank arm to the drive unit even when the rotation of the crank arm connected to the drive unit to transfer the rotational force of the crank arm to the drive unit Efficient bike driving can be achieved.

While the invention has been shown and described with respect to particular embodiments, it is to be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as provided by the following claims. It will be obvious to those of ordinary skill.

Claims

Crank arm 200 coupled to the drive unit 100 and the chain 20 to transmit the rotational force to the wheel 10, and to smoothly rotate the drive unit 100 on one side and the other side of the drive unit 100. In the bicycle drive device including a pedal 300 coupled to the user's feet to the crank arm 200,

The crank arm 200 includes a first crank arm 210 coupled to the driving unit 100 and a second crank arm 220 rotatably coupled to the first crank arm 210.

The first crank arm 210 and the second crank arm 220 are coupled through the variable coupling member 400,

The first crank arm 210

To form a coupling protrusion 211 is coupled to one side of the variable coupling member 400,

The second crank arm 220 is formed by forming a coupling groove 221 is fixed to the variable coupling member 400,

The variable coupling member 400

Tubular body 410 is seated and coupled to the coupling groove 221,

The anti-rotation clutch 420 is fixed to the inner side of the body 410 so that the coupling protrusion 211 is coupled through;

A coupling hole 431 is formed to correspond to the coupling protrusion 211 to form a coupling hole 431 that is fitted and fixed to a protruding portion of the coupling protrusion 211 coupled through the forward rotation preventing clutch 420. One holding plate 430,

At the time of coupling between the first crank arm 210 and the second crank arm 220, after the coupling protrusion 211 is coupled to the forward rotation preventing clutch 420, the second crank arm 220 rotates. According to the first crank arm 210 is rotated, the second crank arm 220 is coupled to rotate in a reverse direction to the rotation direction of the first crank arm 210 through the anti-rotation clutch (420). Bicycle drive device characterized in that the.
The method according to claim 1,

The forward rotation prevention clutch 420 is

A connection part 421 to which the coupling protrusion 211 of the first crank arm 210 is coupled to transmit the rotational force of the second crank arm 220 to the first crank arm 210;

It includes a clutch 422 coupled via a plurality of balls (B) to the outside of the connecting portion 421 to prevent the connecting portion 421 is rotated corresponding to the rotation direction of the second crank arm 220. and,

When the first crank arm 210 and the second crank arm 220 are coupled to each other, the second crank arm 220 is reversed in a direction of rotation of the first crank arm 210 through the clutch 422. Bicycle drive, characterized in that rotated.
The method according to claim 2,

The connection part 421 is

A seating groove 421a is formed along the longitudinal direction,

The coupling protrusion 211 is provided with a fitting protrusion 211a corresponding to the seating groove 421a,

The coupling hole (431) is a bicycle driving device, characterized in that the fitting projection (211a) is provided with a fitting groove (431a) is forcibly fitted.
The method according to claim 1,

In the upper portion of the pedal 300

After the user's foot is seated, the bicycle drive, characterized in that the pedal cover 310 is further provided with a detachable coupling to the pedal 300 so as to be firmly supported even when the second crank arm 220 is rotated Device.