WO2018070578A1 - Structure for generating rotational driving power of bicycle - Google Patents

Abstract

The present invention relates to a structure for generating the rotational driving power of a bicycle, wherein, in contrast to a rotational driving power generating structure in which left and right pedals are stepped on within a certain angle range, the independent reverse rotation of a rear wheel and a front sprocket is allowed when the feet are removed from the pedals, thereby ensuring that the force of a driver stepping on the pedals is entirely converted into rotational driving power without any loss of power, and a bicycle having a preferable structure that does not cause pain in the hip area of the driver can be obtained. In addition, even while being a perfect power conversion mechanism as described above, the structure is simple, there are no difficulties with forward and backward travel, and a significantly special effect may be obtained in which a horse-riding exercise is exhibited depending on the leg movement pattern of the driver.

Description

Structure of generating rotational driving force of bicycle

The present invention relates to a structure for generating a rotational driving force of a bicycle, and more particularly, to the driver's leg motion, that is, pedaling step is completely converted to the rotational driving force without losing power while not causing pain in the driver's hips. A very preferred invention relates to a structure for generating rotational driving force of a bicycle.

In addition, although the present invention is a perfect power conversion mechanism as described above, the structure is not only simple, there is no problem in the forward and backward of the bicycle, and according to the driver's leg movement pattern, the horse riding exercise effect is quite significant. It relates to a structure for generating rotational driving force of a special bicycle.

As is known, the bicycle moves forward as the driver's leg movements which alternately press the left and right pedals are converted into rotational driving force through a crank mechanism and then rotate the rear wheel through the chain.

It is recognized that the rotation driving force generating structure of the conventional bicycle using the crank mechanism has some inherent problems.

The driver's pedaling force is at right angles to the crank arm (maximum moment of rotation) only in some sections of the crank arm 360 ° full turn (sections 30 ° to 90 ° in front of the top dead center (pedal top)). Angle of operation), the overall power loss is inevitable, and for the 360 ° full rotation of both left and right crank arms, tilt your body alternately from side to side to reach the bottom dead center (the bottom of the pedal). For example, the tread can cause significant pain in the driver's hips. (Expressing the direction of bicycle forward as 'forward')

Of course, many studies have been conducted to solve or improve the structural and essential problems as described above, and the representative inventions as a result of the study are as follows.

Korea Patent No. 10-1260009 'Bike' is a structure that generates rotational driving force by alternately pressing the left and right pedals within a certain angle range, and there is no power loss related to the crank arm 360 ° full rotation, while the crank arm and the spring when moving backwards Recombination between the (spring) is not smooth, there is a problem that comes with great inconvenience.

Republic of Korea Patent Publication No. In the case of a 'bicycle driven by up and down reciprocating pedals', it is a structure that generates rotational driving force by stepping left and right pedals up and down within a certain range, and there is no power loss related to the full rotation of the crank arm 360 °. There is a lack of practicality in terms of the need for complicated gear lines.

Republic of Korea Patent Publication No. 10-2014-133796 The bicycle with a reciprocating pedal is also a structure that generates rotational driving force by alternately stepping on the left and right pedals within a certain range. As the crank arm is caught in a wire, there is a problem that reverse operation is impossible.

Japanese Utility Model No. 5-16574 'Crank structure of bicycle' is a structure that generates rotational driving force by alternately pressing the left and right pedals within a certain angle range, which solves the power loss problem related to the crank arm 360 ° full rotation. There is a problem in that reversing is impossible as the crank arm is caught by the stopper when the rear wheel reverses.

Japanese Laid-Open Patent No. JP 2010-70183 'Swivel Pedal Drive Bike' is a structure that generates rotational driving force by alternately stepping on the left and right pedals within a certain range, and solves the power loss problem related to the full rotation of the crank arm 360 °. Other problems, such as excessive forward protrusion of the support shaft portion and vibrations inevitably occur.

U.S. Patent No. 7,753,387 'Bike stepping device' is a structure that generates rotational driving force by alternately pressing the left and right pedals within a certain range, and there is no power loss in the process of converting the driver's leg motion into rotational driving force. There is a problem that leads to an unreasonable result such as excessive opening between the rear wheels.

U.S. Patent No. 8,220,814 'The bicycle going to the stepping motion' is a structure in which the rotational driving force of the bicycle is generated by the normal walking motion, which has the advantage of low power loss and smooth operation, but it is inconvenient and difficult to drive for a long time without the saddle. There is this.

As described above, the inventions to solve or improve the structural and intrinsic problems of the conventional bicycle according to the crank arm 360 ° full rotation method, the rotation drive force generating structure of the way to step on the left and right pedal alternately within a certain range While there are advances in terms of solving the power loss problem related to crank arm 360 ° full rotation, it often leads to problems such as bicycles with complicated distractions or bicycles that cannot be reversed.

On the other hand, there is almost no invention in pursuit of the bicycle of the ideal structure does not follow the pain in the driver's hips.

The present invention is to solve the above-mentioned conventional problems, the bicycle pedal of a highly desirable structure that is not converted to the driver's pedaling force is completely converted to rotational driving force without loss of power while causing pain in the driver's hips, precisely, Its main purpose is to provide a rotational driving force generating structure of a bicycle.

In addition, the present invention is a complete power conversion mechanism as described above, the structure is simple, there is no problem in the forward and backward driving at all, according to the driver's leg movement pattern, the structure of generating a very special bicycle rotational drive force that exhibits the horse riding exercise effect Its ancillary purpose is to provide it.

The object of the present invention as described above is achieved by allowing a reverse drive of the rear wheel and the front sprocket when the foot is released from the pedal while the structure of the driving force generation structure of stepping on the left and right pedal within a certain angle range.

The rotation driving force generating structure of the bicycle according to the present invention, in terms of components, is a structure that is rotatably coupled to the front of the rear wheels on the frame, and the front sprocket connected to the rear wheels through the chain and ; An intermediate rotor which is coupled on the same central axis of rotation as the front sprocket via a one-way bearing (also called a clutch bearing) to rotate the front sprocket in one direction; A drive support member including a drive body having a structure interlocked with the intermediate rotating body, and a support coupled to the drive body to support the drive body in a relative movable state with respect to the frame; A spring having one end connected to the support, which includes a recoil and a separating member which recoils against the movement of the driving body and separates the driving body and the intermediate rotor from each other in a free state and releases the interlocking relationship therebetween. do.

The free state refers to a state in which no external force is applied to the spring, and in the present invention, the state of the spring when the driver releases the foot from the upper end of the driving support member, exactly, the upper end of the support.

The separation of the drive and the intermediate rotor from each other in the free state of the recoil and separation member, i.e. the spring, means that the drive body is driven by the resilient restoring force of the recoil and separation member as soon as the driver releases the pedal from the top of the drive support member. Means to be pushed outside the range of motion, in other words, outside the radius of rotation.

When the external force, ie, the pedaling force of the driver, is applied to the driving body again, the driving body reenters into the movement region of the intermediate rotating body, that is, inside the turning radius, and interlocks with the intermediate rotating body by the force.

The drive and intermediate rotors are interoperable, but also removable, because they have different movement trajectories.

In more detail with respect to the motion trajectory, as the driving body and the intermediate rotating body having the interlocking structure rotate, but have different centers of rotation, the respective motion trajectories become different.

As a result of the above structure, the driver has stepped on the pedal provided on the top of the driving support member (external force is applied to the driving body). When the recoil is repeated), the pedaling force of the driver appears as a rotational driving force for forward rotation of the front sprocket through the driving body, the intermediate rotating body and the one-way bearing, that is, the forward driving force.

In addition, when the driver completely disengages from the pedal, the intermediate rotor, front sprocket, and rear wheels are driven by the resilient restoring force of the recoil and separation members, as the drive is pushed out of the intermediate rotor, outside the turning radius, and separated therefrom. It becomes a state which can reverse rotation independently without being restrained by a drive body.

When the rear wheel, the front sprocket and the intermediate rotor independently rotate, the bicycle slips downhill or the driver arbitrarily reverses the bicycle. 10-2014-133796 and Japanese Utility Model No. In the case of the bicycle according to the present invention, it is impossible to reverse, but in the case of the present invention, there is a feature of smooth backward.

On the other hand, the angular range of the operation of stepping on the pedal is preferably 30 ° to 90 ° in front of the top dead center in terms of the maximum rotation moment generating mechanism, but it is not necessary to specifically limit the angular range.

Instead of stepping on the left and right pedals alternately, you can step on the left and right pedals simultaneously to get a high driving force at the same time, or step on both left and right pedals at the same inclination angle to feel as if you're on a horse. You can also repeat the action you released.

In addition, in the case of the present invention, vibration, according to a very simple structure in which no other medium is interposed between the driving body to which the driver's pedaling force is applied directly and the intermediate rotating body to rotate the front sprocket by the force transmitted therefrom. There are no problems with structural complexity such as noise, breakdowns, etc.

As described above, according to the rotation driving force generating structure of the bicycle of the present invention, unlike the conventional case in which the foot is pressed hard by pressing the pedal alternately left and right to reach the bottom dead center for the 360 ° full rotation of the left and right crank arms. Since only the legs are bent and bent in the interval of 30 ° to 90 ° in front of the top dead center, the pedal step is completely converted to rotational driving force without losing power, and a wide and comfortable saddle instead of the conventional narrow and uncomfortable saddle (see FIG. 1). ) Can be installed and used.

In other words, the driver can ride a bicycle with less effort and a comfortable state that is not accompanied by hip pain.

Bicycle according to the rotational driving force generating structure of the present invention is due to the structural features as described above exhibits a lower saddle height and a smaller front wheel size than the conventional case. (See Figure 1)

In addition, if the left and right pedals are put on the same inclination angle state (see FIG. 1) at the same time as if they are on horses, the special exercise effect such as horse riding exercise, that is, strengthening the abs can be obtained.

As mentioned at the outset, the practical value of the rotational drive force generating structure according to the present invention is considered to be very high in that the structure is not only simple but also there is no problem in the forward and backward movement of the bicycle.

1 is a side view of a bicycle having a rotation driving force generating structure according to a first embodiment of the present invention,

2 is a cross-sectional view taken along line A-A in FIG. 1;

3 is an operating state diagram showing an interlocking process between a driving body and an intermediate rotating body in the rotation driving force generation structure of the first embodiment of the present invention;

4 is an operating state diagram showing a time point at which the driving body and the intermediate rotating body are separated from each other in the rotation driving force generating structure of the first embodiment of the present invention;

5 is a side view of the side end fixed shaft constituting the rotational driving force generating structure of the first embodiment of the present invention;

6 is a view corresponding to FIG. 3 in the structure of generating a rotational driving force according to the second embodiment of the present invention;

FIG. 7 is a view corresponding to FIG. 2 in the structure of generating the rotational driving force of the second embodiment of the present invention.

Hereinafter, a structure for generating a rotational driving force of a bicycle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The rotation driving force generating structure according to the first embodiment of the present invention is located on the frame (F) when arranged in terms of components, as shown in FIGS. 1 and 2, which are side views and AA line cross-sectional views of the bicycle having the structure. A structure coupled to the front of the rear wheel (W2) in a rotatable state, the front sprocket (10) connected to the rear wheel (W2) through a chain (C); An intermediate rotor 20 coupled to the front sprocket 10 via the one-way bearing B2 on the same rotation center axis to rotate the front sprocket 10 in one direction; A drive body 31 having a structure interlocking with and interlocking with the intermediate rotating body 20, and a support body coupled to the drive body 31 to support the drive body 31 in a relative movable state with respect to the frame F ( A drive support member 30 comprising 32; A spring having one end connected to the support 32, which recoils against the movement of the drive body 31, while in a free state, the drive body 31 and the intermediate rotor 20 are separated from each other and interlocked therebetween. A rebound and separation member 40 for releasing the relationship.

For reference, reference numeral "F1" denotes a unit frame extending from the handle H to the bottom of the bicycle center, "F2" denotes a unit frame extending from the saddle S to the bottom of the bicycle center, and "F3" denotes these unit frames. (F1, F2) is located at the site where the meeting with each other while the lower end of the support 32 is coupled to the unit frame, "F4" is on the unit frame (F1) adjacent to the unit frame (F3) while the front sprocket Each of the unit frames for supporting the rotation center axis of (10) is shown, and for the sake of easy explanation and understanding, additional reference numerals are used, and these unit frames are all concepts included in the frame F in the overall meaning. .

In the case of the embodiment, the front sprocket 10 is shown as an integral shaft, but the sprocket and the spline shaft may be coupled to each other.

The intermediate rotor 20 is a spur gear while the drive 31 is a partial gear, ie a sector gear, in the form of an internal ring gear that meshes with the gear.

The drive body 31 as a sector gear has a gear portion 31-1 in which a plurality of gear teeth are formed along an edge arc portion (an advantaged dashed line display portion in the drawing), and a bolt provided on the side wall of the gear portion as the drive frame. ) Is composed of a fastening portion 31-2.

The support 32 is in the form of a crank arm that is fixedly coupled to the side wall of the gear on the drive body 31 and rotates together. The support 32 is provided with a pedal P at the upper end, while the lower end is a center of rotation different from the intermediate rotor 20. There is a feature coupled to the shaft.

Specifically, the lower end of the support 32 is coupled to the side fixed shaft E coupled to the left and right side ends of the unit frame F3 via a conventional bearing B1.

The recoil and separation member 40 is a torsion spring, where one end is connected to the support 32 on the support member 32 while the other end is fixed on the unit frame F3, ie the frame F.

As a result, the recoil and separating member 40 acts as a spring with respect to the movement of the drive body 31 while the drive body 31 integrally coupled with the support body 32 and the intermediate rotor 20 are engaged with each other. Reaction, or reaction.

In the spring-free state, the recoil and separation member 40 separates them from each other by pushing the drive member 31 out of the motion region of the intermediate rotor 20, that is, outside the rotation radius, so as to mutually cooperate. Release it.

Referring to the structure in which the other end is fixed on the frame, that is, the unit frame F3 in the torsion spring as the recoil and separation member 40, the side end fixed shaft E fixed to the left and right both ends of the unit frame F3 is described. The distal end of the torsion spring is fixed to the distal end of the torsion spring 41 while the distal end of the torsion spring 41 is fixedly coupled to the distal end.

Reference numeral “W1” denotes a front wheel, “N” denotes a nut, and “R” denotes a snap ring, respectively, and other bearing departure preventing structures or members may be used. to be.

2 is a cross-sectional view taken along the line A-A in FIG. 1, it is shown by reference to a half-sectional view in order to facilitate the overall structure of the present invention.

Below the drive body gear portion 31-1 (drive body 31 'in FIG. 7 to be described later) on the non-sectional display portion, the drive body 31' (in the case of FIG. 7). Although not visible, the intermediate rotor 20 having the same structure as that of the cross-sectional display unit is coupled.

Meanwhile, even when the intermediate rotor 20 and the driving bodies 31 and 31 'are replaced with pulleys, belt parts, sprockets and chain parts, it is determined that there is no big problem in forming an interlocking structure. (Means that the intermediate rotor and drive are not necessarily limited to gears)

3 is a coupling state diagram showing an interlocking process between a driving body and an intermediate rotating body in the rotation driving force generating structure of the first embodiment of the present invention, and FIG. 3 (a) shows that the driving body 31 and the intermediate rotating body 20 are 3 (b) shows the operating state at the top dead center 90 ° in front of the driving body 31 and the intermediate rotor 20 while interlocking with each other. Respectively. (The symbol "G" represents the bolt hole.)

In other words, FIGS. 3A and 3B illustrate the driving body 31 and the intermediate rotating body as the driver repeats an operation of stepping on and release the pedal P in a section 30 ° to 90 ° in front of the top dead center. 20 shows a case where the forward sprocket 10 continues only the forward rotation while repeating the forward rotation and the reverse rotation.

When the driver presses the pedal P, the driving body 31 rotates the intermediate rotor 20 and the front sprocket 10 together, while when the pedal P is released, the recoil and the recoil of the separating member 40 are released. As a result, only the drive body 31 and the intermediate rotor 20 are reversed (turned), and the front sprocket 10 remains.

In the reverse rotation phenomenon, the phenomenon, in other words, the front sprocket 10 is a state in which only the drive body 31 and the intermediate rotor 20 rotates independently, the intermediate rotor 20 and the front According to the rotational characteristics of the one-way bearing interposed between the sprockets 10 interlocking portions.

Depending on the driver's body type or taste, the driver who actually drives the bicycle having the rotational driving force generating structure according to the present invention presses and releases the pedal P in a section narrower than 30 ° to 90 ° in front of the top dead center. It is common to repeat.

FIG. 4 is an operation state diagram when the driving body and the intermediate rotating body are separated from each other in the rotation driving force generating structure of the first embodiment of the present invention, and the recoil and separation member 40 as the driver completely steps on the pedal P. FIG. ), Ie, the torsion spring is restored to the free state while the drive body 31 is pushed out of the motion region of the intermediate rotor 20, that is, outside the rotation radius by the elastic restoring force.

When the bicycle slides downhill or the driver arbitrarily reverses the bicycle, the rear wheel, the front sprocket 10 and the intermediate rotating body 20 rotate together (the front sprocket 10) when the reverse rotating the intermediate rotating body 20 ), Which also depends on the rotational characteristics of the one-way bearings interposed therebetween, and as shown, even in such a case, the driving body 31 has its gear end (right end) As it is pushed out of the rotation radius of the whole 20, the reverse rotation of the intermediate | middle rotor 20, the front sprocket 10, and the rear wheel is not suppressed.

In other words, the bicycle has no problem in reversing the rotation driving force generating structure of the present invention.

As the driving body 31 and the intermediate rotating body 20 rotates but have different rotation centers, the respective trajectories of the driving body 31 and the intermediate rotating body 20 are different from each other.

As shown in FIG. 5, which is a side view of the side end fixed shaft constituting the rotational driving force generating structure of the first embodiment of the present invention, the recoil and separation member engaging portion 40 * is moved to the right of the snap ring groove R * as a boundary thereof. The suppression plate engaging portion 41 * and the screw forming portion are each connected.

The movement restraining plate 41 is a member for restraining the movement of the other end as mentioned above on the reaction and separation member 40 under the external force, and the movement restraining plate 41 of such a function is coupled. That is, the movement inhibiting plate coupling portion 41 * is characterized by having a rectangular cross section unlike other portions having a circular cross-sectional shape.

In other words, the movement restraining plate 41 is engaged with the movement restraining plate engaging portion 41 * having a square cross-sectional shape so as to be firmly fixed so as not to move the other end of the reaction and separation member 40, that is, the torsion spring. Given.

6 and 7 illustrate a structure corresponding to FIG. 3, that is, a diagram corresponding to FIG. 3 (a) and a diagram corresponding to FIG. 2 in the rotation driving force generating structure according to the second embodiment of the present invention. 31 ') and the support 32' are different from the case of the first embodiment in that they are bolted to each other in a close contact structure.

Specifically, the drive body 31 ′ is a structure in which a plurality of gear teeth are formed along an edge arc portion, and a screw hole M * for fastening the bolt M is formed in a side wall portion as the drive frame. It is for achieving a more robust structure by integrating the bolt 31 in a state in which the 31 'and the support 32' are in close contact.

Reference numeral “Q” is a hole for alleviating the overall weight due to the thickening of the side wall of the driving body 31 ′ as compared with the case of the first embodiment, and the number and size can be changed within the range not to impair the structural robustness. Of course.

[Description of the code]

     10: front sprocket 20: intermediate rotor

30, 30 ': drive support member 31, 31': drive body

32, 32 ': support 40: recoil and separation member

Claims (5)

A structure that is rotatably coupled to the front of the rear wheel (W2) on the frame (F), the front sprocket (10) connected to the rear wheel (W2) through the chain (C); An intermediate rotor 20 coupled to the front sprocket 10 via the one-way bearing B2 on the same rotation center axis to rotate the front sprocket 10 in one direction; The drive bodies 31 and 31 'of the structure interlocking with the intermediate rotor 20 and the drive bodies 31 and 31' are mutually coupled to the drive body 31 and 31 'with respect to the frame F. Drive support members 30 and 30 'including support members 32 and 32' for supporting in a relative movable state; A spring having one end connected to the support 32, 32 ′, which recoils against the movement of the drives 31, 31 ′ while in the free state the drives 31, 31 ′ and the intermediate rotor 20. ) And a recoil and separation member 40 separating each other to release the interlocking relationship therebetween, When the pedal P provided on the top of the driving support members 30 and 30 'is repeated, rotational driving force is continuously generated, whereas when the pedal P is released, the recoil and separation member ( As the driving bodies 31 and 31 ′ are pushed out of the motion region of the intermediate rotor 20 and separated therefrom by the elastic restoring force of the rear wheel 40, the rear wheel W2, the front sprocket 10 and the intermediate rotor 20. The rotating drive force generating structure of the bicycle, characterized in that the independent reverse rotation is possible. The method of claim 1, The intermediate rotor 20 is a spur gear while the drives 31, 31 ′ are sector gears in the form of internal ring gears which mesh with the gears; The supports 32 and 32 'are crank arms which are fixedly coupled to the side walls of the driving bodies 31 and 31' as sector gears and rotate together. The support 32 and 32 'are provided with a pedal P at the upper end thereof, while the lower end is the intermediate rotor 20. The rotation driving force generating structure of the bicycle, characterized in that coupled to a different rotation center axis. The method of claim 1, The drive body 31 is composed of a gear portion 31-1 having a plurality of gear teeth formed along an edge arc portion, and a bolt fastening portion 31-2 provided on the side wall of the gear portion as the drive frame. Rotation driving force generating structure of the bicycle. The method of claim 1, The drive body 31 ′ generates a rotational driving force of a bicycle, wherein a plurality of gear teeth are formed along an edge arc portion, and a screw hole M * for fastening the bolt M is formed in a side wall portion of the drive frame. rescue. The method of claim 1, The recoil and separating member 40 is a torsion spring interposed between the supports 32 and 32 'as the crank arm and the frame F, and restrains movement fixedly coupled to the end of the side fixed shaft E on the frame F. A rotation driving force generating structure for a bicycle, characterized in that the other end is fixed to the hole on the plate (41).

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