KR20100121417A - The structure of the bicycle for stand-riding - Google Patents

Abstract

PURPOSE: A standing type bicycle structure is provided to enable a rider to ride a bicycle by a reciprocating motion at a pedal angle which is easy for the rider to use power. CONSTITUTION: A standing type bicycle structure has left and right pedal arms(121). The left and right pedal arms are installed in a frame(100). Sprocket functional units(131,132) are formed under a flat footing surface. The front end of left and right arm chains(141,142) is fixed in the sprocket functional unit. U-turn chains(143,153) connect to the rear end of the right and left arm chains. The U-turn chains is covered in turn around sprockets(145,155) installed on the rear frame.

Description

The structure of the standing bicycle {THE STRUCTURE OF THE BICYCLE FOR STAND-RIDING}

It relates to the structure of the bicycle which the passengers run by standing and riding the left and right pedals up and down.

In a conventional bicycle, a mechanism in which a passenger sits on a saddle, rotates a crank arm with a foot, and transmits rotation to a rear wheel by a chain or the like is common. In the sitting position, it is difficult to use the weight for the rotation of the crank arm while the strength of the posture maintenance is small.However, when a large propulsion force is required, the shift gear or standing and running is performed. The decrease in propulsion force near the top dead center and the bottom dead center of rotation was inevitable. In addition, the need to install a saddle on the car body was limiting the miniaturization of the bicycle.

In order to make up for this drawback, a bicycle is also disclosed in which a pedal is reciprocated up and down in an occupant's standing position, and this is changed to rotation of the rear wheels (Patent Document 1). In this method, it is easy to use the weight to step on the pedal, and it is possible to avoid the reduction of the propulsion force near the top and bottom dead center of the pedal, but the pedal is installed at the front end of the seesaw type arm and the rear end movement is performed. As a mechanism for driving the chain, the same length is required on both sides of the spot of the seesaw, and both the miniatures and the movement part of the bicycle are uncomfortable because both ends are moved up and down by the same stroke. There was a difficult point in that. In addition, since the pedal needs to be installed at the front end of the seesaw, the movement path of the pedal inevitably becomes a circular arc that swells forward, and a circular arc that swells backwards that is easy to start pedaling in the foreground when climbing a hill. Had to be reversed.

Moreover, the scooter which isolate | separates the support surface plate of a rider's foot from side to side in standing standing and reciprocates up and down with a pedal which hinges the front end, and turns this into rotation of a rear wheel is also announced (patent document 2). In this method, the slender and long supporting surface plate itself in the front and rear direction has a hinge which is the center of rotation of the reciprocating motion, so that the surface has a fresh appearance, the standing position of the occupant can be lowered, and the driving mechanism is lowered. While excellent in that it can be concealed, the reciprocating motion uses only about the upper half of the circular arc trajectory, since the need for the foot support surface plate to be approximately horizontal is the bottom dead center, so that a large part of the upper and lower components cannot be used at all. In order to establish the interlocking mechanism of the movement of the left and right foot support surface plates as a premise, the fixture protruding upward from the frame on the center line of the vehicle not only prevents the fresh appearance of the foot support surface, but also prevents contact with the occupant during pedaling operation. Excessive care is required, and the steering shaft is folded to accommodate There was a difficulty in that such a factor to inhibit miniaturization. In addition, since the angle of the foot support surface plate is geometrically determined, there are difficulties in that the up and down strokes are not obtained when the front and rear dimensions are reduced, or the angle of the foot, which is easy for the occupant to apply, cannot be freely obtained.

Japanese Laid-Open Patent Publication 2005-280671 Japanese Patent Publication 2006-510535

The present invention has been made in view of the problems of the prior art standing bicycles and scooters as described in the background art, the object of which is the up and down reciprocating movement of the pedals to move the angle or trajectory, which is easy to draw human power Mechanism that converts the wheel into a rotational movement of the rear wheel without requiring a protruding fixture between the left and right pedals and a prominent space at the rear of the pedal, while maintaining a low riding position even in a standing bicycle with shorter front and rear dimensions. It is to provide a small, comfortable and stand-up bicycle that can ride comfortably.

In order to achieve the above object, the first invention is a pedal arm (121/122) of the left and right in the bicycle to allow the occupant to climb up and down the left and right pedal (111/112) provided between the front wheel and the rear wheel All of these are provided on the frame (* 1) so that the rotary shaft 103 parallel to the rear wheel is located forward and upward above the horizontal step surface at the bottom dead center of the pedal, and the sprocket function portion 131 coaxial with the rotary shaft is provided. / 132) below the horizontal scaffolding surface, and the rear end of the left and right arm chains (141/142) which are coupled to the functional part by fixing the front end to the rear on the rear frame at the functional part. It is wound around the installed turnaround sprocket 145 and connected to both ends of the U-turn chain 143 which is installed to make a U-turn forward, and the other side is lifted by one pedal step. A pedal is rotatably installed at a rear end of the rotary shaft 115/116 parallel to the rotary shaft, and the swing sprocket 161/162 is positioned on the pedal arm and at the lower pedal position (* 2). The chain anchors 101/102 are installed in the upper and lower positions of the pedal and in front of the swing sprocket at the bottom dead center, and the idler sprockets 171/172 are installed in the rear, respectively, and the rear wheels are unidirectional, which transmits only forward driving force. Two sprockets with clutch (181/182) are provided, and the left and right drive chains (151/152) are fixed to the chain anchors, respectively, ⇒ wound on the swing sprocket in the shape of a mountain, ⇒ on the idler sprocket in a valley shape. ⇒ A sprocket with a unidirectional clutch is installed in the form of a mountain wound to reach the other end facing forward. It is connected to both ends of the U-turn chain 153 which is wound around the turn-around sprocket 155 provided on the frame in front of the sprocket with the one-way clutch and U-turned at the rear, and has a mechanism in which the left and right drive chains are linked. It is done.

* 1 In this context, "frame" is defined as including a strong fixture protruding from the frame.

* 2 Herein, "A is in the lower pedal position" is defined as the positional relationship in which part or all of A is hidden in the pedal when viewed in a plane.

According to the present invention, since the pedal arms 821/822 have a rotation shaft 803 above the horizontal foot surface 899 at the bottom dead center of the pedal, the pedal arm 821/822 is easy to start stepping on the foreground when climbing a hill. The pedal trajectory 898 which rotates the part which has an inflated arc and a lot of up-and-down components is realized long. At the same time, even if the coaxial sprocket functions 831/832 are not located significantly lower than the horizontal scaffold surface, the rotation radius can be secured, and the chain coupled to the function parts is turned from the rear side to turn left and right. By linking, it becomes easy to establish a mechanism in which the left and right pedal arms move in opposite directions with each other at this height, i.e., at a lower pedal bottom dead center height, in a position that is difficult to be noticed without disturbing the movement of the foot.

In addition, another advantage of using the rotation axis of the pedal arm in the position of the present invention is that the frame raised portion 800a originally required to support the head tube 804 can be used, which can reduce the feeling of protrusion toward the upper side, and In the case of a folding bicycle, the frame rising part 900a is formed as a protruding fixture separated from the left and right to secure a space for the folding component to be inserted between the left and right pedal arm rotation shafts.

In addition, since the pedals 811/812 are rotatably installed with respect to the pedal arms 821/822 about the rotational shafts 815/816, even if the pedal arm length is short, the occupant may take an easy angle. You can effectively withdraw your strength. In addition, it can be seen from the prototype that the posture support of the occupant is not impaired accordingly, but it is also possible to easily experience from standing while running in a conventional bicycle. The drive chain 851/852 is pulled out by the swing sprocket 861/862 of the pedal arm opposite to the pedal stepped by the linkage mechanism, but the chain anchor 801/802 and the idler sprocket ( 871/872) can be mounted on the frame in the lower pedal position, allowing the drive chain to be drawn out unobtrusively under the pedal in the reciprocating area of the pedal as originally required, allowing for a comfortable standing bicycle. It can be provided in a small and aesthetically pleasing form.

In the second invention, in the first invention, the sprocket function portion of the pedal arm is replaced by a pulley function portion or a gear function portion 331/332 or a lever function portion 431/432, and a related chain and turnaround sprocket A corresponding rope and a turnaround pulley or a turnaround gear 345 or a rod and a turnaround lever 445 are respectively replaced, characterized in that it comprises a mechanism associated with the other to rise by one pedal step.

The present invention is an alternative of the first invention which can be selected according to the purpose of low cost, small size, light weight, low noise, and aesthetics.

According to a third aspect of the present invention, in the first and second inventions, a linkage mechanism for allowing the other to be lifted by one pedal step is realized by a mechanism using hydraulic pressure.

The present invention is an alternative to the first and second inventions that can be selected according to the purpose of miniaturization, aesthetics and the like.

In the fourth invention, in the first, second and third inventions, the drive chain is replaced by a belt, and the U-turn chain connecting it is simultaneously or alone replaced by a belt or a rope, and the associated sprocket or anchor corresponds to the pulley. It is characterized by including a mechanism to be replaced by an anchor.

The present invention is an alternative to the first, second, and third inventions which can be selected according to the purpose of cost reduction, miniaturization, light weight, low noise, and aesthetics. In the case where the drive chain and the U-turn chain are replaced by the belt at the same time, the belt can be integrally formed and twisted around the turnaround pulley to be U-turned.

In the fifth invention, in the first, second, third, and fourth inventions, the sprocket (or pulley) with the unidirectional clutch is provided on a rotation shaft set separately from the rear wheel, and rotates on the rear wheel through this rotation. It is characterized by including the mechanism to be transmitted.

According to the present invention, only one chain (or belt) installed on the rear wheel shaft is required, and assembling space such as a transmission mechanism and a braking mechanism can be easily secured.

As described above, according to the present invention, a pedal that can be rotated backwards, which is easy to be stepped on the foreground position when climbing a hill, and has a long angle of rotation of a portion having many upper and lower components, and has an easy angle to apply force. The mechanism to change the movement of the body into a rotational movement can be established in a position that is hard to be seen without disturbing the foot movement while maintaining a low pedal bottom dead center height even on a standing bicycle with short front and rear dimensions. It is possible to realize a stand-up riding bicycle that is compact and has excellent aesthetics.

1 is an isometric view showing one embodiment of the first invention.
2 is a plan view showing another embodiment of the first invention.
3 is an isometric view showing one embodiment of the second invention.
4 is an isometric view of another embodiment of the second invention.
5 is an isometric view showing one embodiment of the fourth invention.
6 is a plan view showing one embodiment of the fifth invention.
7 is a plan view showing another embodiment of the fifth invention.
Fig. 8 is a side view showing the riding position for the bicycle of one embodiment of the first invention.
Fig. 9 is a side view showing a folded state of a folding bike of one embodiment of the first invention.
10 is a side view showing another embodiment of the first invention.

EMBODIMENT OF THE INVENTION Hereinafter, one Example is described based on drawing as embodiment of this invention.

(Example)

1 is an isometric view showing one embodiment of the first invention. The occupant holds the steering wheel 107 and rides in a standing position on the pedals 111/112. First, the linkage mechanism of the up and down movement of the left and right pedals will be described. When the pedal (right) 111 is pressed, the pedal arm (right) 121 rotates around the pedal arm rotation shaft 103 provided in the frame rising part 100a, and the sprocket function part (right) 131 is integrated with this. ) Rotates and pulls the arm chain (right) 141 forward, and the U-turn chain 143 connected to the orthogonal joint 144 is U-turned in the turnaround sprocket 145 and the orthogonal joint 144 on the opposite side. Pull the arm chain (left) 142 connected through the rear to drive the sprocket function unit (left) 132 to rotate the pedal arm (left) 122, and the pedal (left) installed at the rear end ( 112 and swing sprocket (left) 162 are raised. 1 shows a state where the right / left pedal is at the top / bottom dead center.

Next, a mechanism for rotating the rear wheels will be described. The drive chains 151/152 each have one end fixed to the chain anchors 101/102 installed on the frame 100, and a mountain shape is formed on the swing sprockets 161/162 provided on the rear ends of the pedal arms 121/122. Wound on the idler sprocket (171/172) installed on the frame 100, and wound on the sprocket 181/182 with the unidirectional clutch of the rear wheel 106 to reach the other end toward the front, Both ends facing the rear of the U-turn chain 153 wound around the turnaround sprocket 155 and the orthogonal joint 154 are coupled to each other so that the left and right movements are linked.

When the right pedal 111 is pressed down, the swing sprocket on the left side 162 rises as described above, but the drive chain (left) 152 fixes the end to the chain anchor 102. The length of approximately twice the lift stroke of the swing sprocket (left) 162 is drawn out from the rear of the idler sprocket (left) 172, and the sprocket (left) 182 with the unidirectional clutch is rotated in the forward direction. Drives the rear wheel 106 and pulls the forward end portion of the drive chain (right) 151 on the opposite side through the U-turn chain 153, and the drive chain by lowering the swing sprocket (right) 161. (Right) Absorb the baggage of the extraction length of 151. At this time, the sprocket (right) 181 with the one-way clutch rotates rearward, but rotates freely, and thus does not affect the rotation of the rear wheels 106.

Fig. 2 is a plan view showing an example of another embodiment of the first invention in which two rear wheels and two unidirectional clutch sprockets are provided between two wheels.

3 is an isometric view showing an example in which a gear is used for the linkage mechanism of the left and right pedal arms as one embodiment of the second invention. The case where the pedal and swing sprocket are installed in the latter part of the pedal arm is also shown.

Fig. 4 is an isometric view showing an example of using a rod and a lever for linkage mechanisms of the left and right pedal arms as another embodiment of the second invention.

For the third invention, for example, a person skilled in the art can easily think of an embodiment such as acting an actuator such as a hydraulic cylinder on the lever function portion of the pedal arm of FIG. Omit. It goes without saying that the site where the hydraulic pressure is applied is not bound to the lever function of FIG.

FIG. 5 is an isometric view of an embodiment of the fourth invention, in which drive chains and connecting chains are simultaneously replaced by belts, integrally molded instead of orthogonal joints, and twisted to turnaround pulleys. In this figure, an example is shown in which a mechanism is pressed by the spring 593 so that the rotational axis of the turnaround pulley 555 always moves forward to give tension to the belt. You can do as you need.

Fig. 6 is a plan view showing an example in which a hub-internal transmission is provided by installing a sprocket with a unidirectional clutch on a rotation shaft different from the rear wheels and using only one side of the chain to be engaged on the rear wheels.

Fig. 7 is a plan view showing an example in which one chain is provided between two rear wheels as another embodiment of the fifth invention.

Fig. 8 is a side view showing the riding position of the bicycle of one embodiment of the first invention.

Since the rotary shaft 803 of the pedal arms 821/822 is above the horizontal step surface 899 at the bottom dead center of the pedal, an arcuate trajectory that swells to the rear, which is easy to apply force when the pedaler pedals in the foreground position ( Left and right pedal arms, since the long portion of the upper and lower components of 898 can be used and the rotation radius can be secured even if the coaxial sprocket function portions 831/832 are not located significantly lower than the horizontal scaffold surface. The linkage mechanism of the pedal arm is easily established at this height position, that is, at a low pedal bottom dead center height, and the rotational axis 803 of the pedal arm is provided on the raised portion 800a of the frame to reduce the feeling of upward projection. And drive chain 851 withdrawn from swing sprocket 861 is within the reciprocating range of the pedal and hidden under pedal 811. Indicates that it is less obtrusive it is accommodated in the form. In addition, since the pedal 811 can rotate about the pedal rotation shaft 815 even if the pedal arm 821 is short, it shows that the foot angle which an occupant is easy to give a force is obtained.

9 is a side view showing one example in which the first invention is applied to a folding bicycle. By forming the frame riser 900a as a protruding fixture separated from the left and right, the steering support 909 can be inserted between the protruding fixtures when folded, and a fixture protruding upward from the frame exists between the left and right pedals. As a result, the steering shaft 908 can be inserted, indicating that compact storage is realized. This is the state when the two-dot chain line is folded and accommodated.

10 is a side view showing another embodiment of the first invention. The drive chain 1051/1052 protruding forward from the lower side of the sprocket 1081/1082 with the unidirectional clutch is lowered to the height of the turnaround sprocket 1055 by the idler sprocket 1073/1074. Although the rotating surface of a turn-around sprocket is horizontal in this figure, it goes without saying that it is not particular about a horizontal.

100, 200, 500, 600, 700, 800, 900 frames
100a, 800a, 900a frame rise
101, 801/102, 802 Chain anchors (right) / (left)
103, 303, 403, 803, 903 pedal arm rotary shaft
104, 804, 904 head tube
105, 905 front wheels
106, 206, 506, 606, 706, 906 rear wheel
107, 807, 907 handle
108, 908 steering shaft
111, 311, 811, 911/112, 312, 812, 912 Pedal (Right) / (Left)
115, 315, 815/116, 316, 816 Pedal Rotation (Right) / (Left)
121, 321, 421, 821, 921/122, 322, 422, 822, 922 pedal arm (right) / (left)
131, 831/132, 832 sprocket function (right) / (left)
141/142 Female chain (right) / (left)
143, 153 U-turn chain
144, 154 Orthogonal Joints
145, 155, 1055 turnaround sprockets
151, 251, 651, 751, 851, 1051/152, 252, 652, 752, 852, 1052 drive chain (right) / (left)
161, 361, 861/162, 362, 862 Swing Sprocket (Right) / (Left)
171, 871/172, 872 idler sprocket (right) / (left)
181, 281, 681, 781, 1081/182, 282, 682, 782, 1082 Sprocket with unidirectional clutch (right) / (left)
331/332 gear function (right) / (left)
345 turnaround gear
431/432 lever function (right) / (left)
441/442 road (right) / (left)
445 turnaround lever
500b frame fixture
551 drive belt
555 turnaround pulley
591 turnaround pulley
592 pulley rotation axis
593 Belt Tensioning Spring
695, 795 Wheel Chain
696 hub built-in transmission
697 shifting operation cable
898 pedal arc trajectory
899 Horizontal Footplate at Bottom Dead Center
909 head support
910 head support shaft
1073/1074 idler sprocket (right) / (left)

Claims (8)

In a bicycle in which a passenger rides on a left and right pedal installed between a front wheel and a rear wheel and reciprocates up and down, the left and right pedal arms are located in the front part thereof. A rotary shaft parallel to the rear wheels is provided on the frame so as to be forward and upward above the horizontal scaffolding surface at the bottom dead center of the pedal, and has a sprocket function coaxial with the rotating shaft below the horizontal scaffolding surface. The front end is fixed and coupled to the sprocket function unit, and the rear end of the left and right arm chains is wound around the turn around sprocket installed on the frame rearward from the sprocket function unit. It is connected to both ends of the u-turn chain installed to U-turn from the front to the front, and is connected so that the other is lifted by one pedal step. The pedal is rotatably mounted on the axis of rotation parallel to the axis of rotation, the swing sprocket on the pedal arm and at the lower pedal position, the chain anchor on the frame and at the lower pedal position and in front of the swing sprocket at the bottom dead center, likewise. Idler sprockets are respectively installed at the rear, and the rear wheels are provided with two unidirectional clutch sprockets that transmit only forward rotational driving force. Fastened to the chain anchor, wound on the swing sprocket in the form of a mountain, wound on the idler sprocket, and mounted on the mount on the sprocket with a unidirectional clutch to reach the other end in the forward direction, and the other end in one direction. Turn-around sprocket installed on frame ahead of sprocket with clutch Winding the U-turn of the chain connection kit provided to the U-turn to the rear ends, respectively, and the bicycle structure comprising the mechanism of the chain drive of the right and left association.
The method of claim 1,
The sprocket function of the pedal arm is replaced by a pulley function or gear function or lever function, and the related chain and turnaround sprockets are replaced by corresponding ropes and turnaround pulleys or by turnaround gears or by rod and turnaround levers respectively. A bicycle structure, comprising: a mechanism associated with the other being raised by stepping on a pedal.
The method according to claim 1 or 2,
A bicycle structure comprising a mechanism using hydraulic pressure to realize a linkage mechanism that causes the other to be raised by stepping on one pedal.
The method according to claim 1 or 2,
A bicycle structure comprising a mechanism in which a drive chain is replaced by a belt, a U-turn chain connecting the belt or a rope simultaneously or alone, and a related sprocket or anchor is replaced by a corresponding pulley or anchor.
The method according to claim 1 or 2,
A sprocket or a pulley with a unidirectional clutch is provided on a rotating shaft set separately from the rear wheel instead of the rear wheel, and the bicycle structure is provided with a mechanism through which the rotation is transmitted to the rear wheel.
The method of claim 3,
A bicycle structure comprising a mechanism in which a drive chain is replaced by a belt, a U-turn chain connecting the belt or a rope simultaneously or alone, and a related sprocket or anchor is replaced by a corresponding pulley or anchor.
The method of claim 3,
A sprocket or a pulley with a unidirectional clutch is provided on a rotating shaft set separately from the rear wheel instead of the rear wheel, and the bicycle structure is provided with a mechanism through which the rotation is transmitted to the rear wheel.
The method of claim 4, wherein
A sprocket or a pulley with a unidirectional clutch is provided on a rotating shaft set separately from the rear wheel instead of the rear wheel, and the bicycle structure is provided with a mechanism through which the rotation is transmitted to the rear wheel.

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