JPH09207858A - Bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transport a bicycle easily in a condition in which it is compact by providing a front wheel which can be attached and detached on a front fork and holding it rotatably in a condition in which the front wheel which is removed is in contact with the ground at a more rear position than ordinary front wheel mounting position and at a position ahead of a rear wheel. SOLUTION: A front wheel 35 is held in a condition in which it is sandwich between two lower pipes 34, and a front wheel hub is fitted and fixed in a knotched part provided in a projection part 36 at this time. Consequently, the front wheel 35 is held rotatably so that it does not come into contact with two lower pipes 34. At this time, a pipe of a saddle 42 is stored in a vertical pipe 32 and a handle 43 is folded to make a bicycle compact. A hub core provided at the center of the front wheel hub is independent from the rotation of the front wheel 35, and the hub core does not rotate even if the front wheel 35 rotates. As a result, it is possible to fit the front wheel hub in a knotched section of a front fork and fix the front wheel 35 in such a manner that it can rotate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle that is compact and can be moved.

[0002]

2. Description of the Related Art In recent years, bicycles have been put on the market that can be carried in a compact form by removing the front wheels of the bicycle and storing them inside a frame.

FIG. 11 shows a conventional bicycle. In FIG. 11, a frame 1 includes a head tube 2, a standing pipe 3, an upper pipe 4 connecting the head tube 2 and the standing pipe 3, and a standing pipe 3. And a lower pipe 5 connecting the lower end of the head tube 2 and the upper end of the head tube 2. And frame 1
The rear wheel 6 rotatably held at the rear portion is configured to be rotated by rotating the pedal via a rotary gear 7 and a chain 8 which are integrated with the pedal.

The front fork 9 is held by the head tube 2, and a cutout portion 11 for fitting a front wheel hub 10 serving as a front wheel shaft is provided at a lower end of the front fork 9. At this time, since the front wheel hub 10 located at the center of the front wheel 12 rotates independently of the rotation of the front wheel 12, the front wheel 12 rotates even if the front wheel hub 10 is fixed. The front wheel hub 10 and the notch 11 are fixed by tightening the quick lever 13.

At the upper end of the front hawk 9, the head tube 2
It is connected to the handle 14 via. A detachable lever 15 that connects the front fork 9 and the handle 14 is provided on the upper portion of the handle 14.

FIG. 12 shows a compact bicycle for transportation and the like. The front wheel 12 has a quick lever 1
Loosen 3 and remove it from the front hawk 9, and store it between the lower pipe 5 and the front hawk 9. Then, the handle 14 is detached from the head tube 2 by loosening the attaching / detaching lever 15.
It is arranged so as to contact the upper pipe 4. At this time, the handlebar 14 arranged above the upper pipe 4 and the front wheel 12 housed in the frame 1 are fixed by the fixing band 16.

The bicycle having the above structure can be made compact by housing the front wheels 12 inside the frame 1.

[0008]

As described above, in a bicycle in which the front wheels are housed in the frame and can be made compact, it is necessary to lift and carry the compact bicycle when moving, and It was not suitable for moving time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a bicycle which is made compact by housing the front wheels in a frame and which can be easily transported in a compact state.

[0010]

In order to solve the above problems, a bicycle according to the present invention is provided with a front wheel which is attachable to and detachable from a front fork, and is rearward of a normal front wheel mounting position and forward of a rear wheel during transportation. The holding means for holding the removed front wheel rotatably is provided at the position.

[0011] With this configuration, the front wheel comes into contact with the ground and functions as a wheel even in a compact state, so that it can be easily transported.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The bicycle of the present invention is provided with a removable front wheel on a front fork, and the front wheel removed at a position rearward of a normal front wheel mounting position and forward of a rear wheel is grounded during transportation. The frame is provided with a holding means for rotatably holding it in the above state, and by holding the removed front wheel rotatably on the frame, it functions as a wheel even in a compact state and facilitates transportation. can do.

The bicycle frame of the present invention includes a frame having a head tube, a standing pipe, and pipes arranged in parallel to connect the head tube and the standing pipe, and the connecting pipe has a holding means. By providing and holding the front wheel between the lower pipes, the wheel can be grounded even in a compact state and can function as a wheel to facilitate transportation. .

Further, as the holding means of the present invention, a front wheel gripping tool, which is bent in a U shape so as to face both ends so as to fix the front wheel shaft of the front wheel from both sides, is movably attached to the frame. Thus, even with a bicycle having only one lower pipe, the wheels can be grounded even when they are made compact to perform the function of wheels and be transported.

In the bicycle of the present invention, the front fork is provided with a folding mechanism, and the front fork is bent during transportation in a state in which the front wheel is grounded at a position behind the normal front wheel mounting position and in front of the rear wheel. By holding it rotatably, it can be easily made compact, and even when it is made compact, it can function as a wheel to facilitate transportation.

Further, the bicycle of the present invention is provided with a detachable rear wheel at the rear portion of the frame, and is detached at a position forward of the normal rear wheel mounting position and at a position rearward of the front wheel during transportation, with the rear wheel grounded. Since the holding means for holding the frame is provided on the frame, the bicycle can be transported compactly at the rear part of the bicycle.

Hereinafter, embodiments of the present invention will be described. (Embodiment 1) FIG. 1 shows a compact bicycle. In FIG. 1, the frame 30 has a head tube 31 at the tip, a standing pipe 32, an upper pipe 33 connecting the upper end of the standing pipe 32 and the upper end of the head tube 31, and a lower end of the standing pipe 32 and a lower end of the head tube 31 at the same point. Has a lower pipe 34 for connecting the. The distance between the two lower pipes 34 is large enough to accommodate the front wheels 35. Then, each of the two lower pipes 34 is provided with a protruding portion 36 that faces downward in the middle of the lower pipe 34 as front wheel holding means. At this time, the projecting portion 36 is provided with a notch portion 38 for fitting with the front wheel hub 37 which is the front wheel shaft. Here, the shape of the lower pipe 34 and the position of the protruding portion 36 are set so that when the front wheel hub 37 is fitted and fixed to the cutout portion 38, the front wheel 35 can rotate in a state of being grounded. .

The rear wheel 39 is rotatably held on the rear portion of the frame 30. Further, the rotary gear 40 pivotally supported on the lower end of the standing pipe 32 rotates the rear wheel 39 via the chain 41 by rotating a pedal integrated with the rotary gear 40. A saddle 42 is inserted and fixed from the upper end of the standing pipe 32. Further, a handle 43 that can be compactly bent is also inserted and fixed from the upper end of the head tube 31.

At the lower end of the head tube 31, the front fork 4 is attached.
4 is inserted, and then the handle 43 and the front fork 44 are connected. At this time, the front fork 44 and the handle 43 are movably held with respect to the head tube 31, but the front wheel hub 37 is fixed to the lower end of the front fork 44 by a quick lever 45 for fixing the front wheel hub 37. To do.

FIG. 2 shows an enlarged view of the lower end of the front fork 44 and the front wheel hub 37. The front fork 44 has a notch 46 at the tip thereof for fitting with the front wheel hub. The hub core provided at the center of the front wheel hub 37 is independent of the rotation of the front wheel 35, and even if the front wheel 35 rotates, the hub core provided at the center of the front wheel hub 37 does not rotate. Is configured. Therefore, the front wheel hub 37 can be fitted into the notch portion 46, and the front wheel 35 can be rotatably fixed to the front fork 44 by the quick lever 45.

FIG. 3 shows a compact bicycle of the present invention, in which a front wheel 35 is held in a state of being sandwiched between two lower pipes 34. At this time, the front wheel hub 37
Is fitted with a notch 38 provided on the protrusion 36 and fixed by a quick lever 45. Therefore, the front wheel 35 is rotatably held between the two lower pipes 34. FIG. 4 is a view of the lower pipe 34 of the compact bicycle viewed from below, and the front wheel 35 has two lower pipes 3
It is configured so as not to come into contact with 4.

At this time, in order to make the bicycle compact, the pipe of the saddle 42 is housed in the standing pipe 32, and the handle 43 is bent.

According to the present invention having the above structure, the front wheel 35 is housed inside the frame 30 during transportation, and the front wheel 35 is
Since it is rotatably held while being grounded, it is possible to rotate a wheel of a compact bicycle and push it around. Therefore, it becomes easy to move the compact bicycle.

(Embodiment 2) In FIG. 5, a front wheel gripping tool 47 is used as a holding means. The front wheel gripping tool 47 is bent so that both ends face each other so as to fix the front wheel shaft from both sides. 1 shows a bicycle that can be made compact, in which a frame is provided on a bicycle frame 48.

The frame 48 of this bicycle has a head tube 49 at the tip, a standing pipe 50, and an upper pipe 51 connecting the upper end of the standing pipe 50 and the upper end of the head tube 49.
And a single lower pipe 52 that connects the vertical pipe 50 and the lower end of the head tube 49. Here, a front wheel grip 47 having a notch (not shown) at both ends of a pipe bent so that both ends face each other is provided at the lower pipe 52. At this time, the front wheel gripping tool 47 is held between the lower pipe 52 and the upper pipe 51 so as not to get in the way while the bicycle is traveling.

However, when carrying a bicycle in a compact size, as shown in FIG.
7 is fixed by bending the lower pipe 52 by 90 degrees. Then, the front wheel hub 54 is fitted into the notches provided at both ends of the holding tool 47, and the front wheel hub 54 is fixed from both sides. Further, the front fork 55 is removed, the handle 56 is bent, and the pipe of the saddle 57 is set to the vertical pipe 50.
Compact the bicycle by storing it inside.

This compact bicycle has a
Since the front wheels 53 are rotatably held by the front wheel clamp 47, a compact bicycle can be easily transported. In addition, since the front wheel holding member 47 serving as the front wheel holding means can be provided in a general bicycle having only one lower pipe 52, a compact bicycle in which the wheels can be rotated and pushed. Can be easily configured.

In the above description, the front wheel hub is fixed on both sides in order to hold the front wheel, but the front wheel hub is fixed on only one side and the front wheel 53 is held.
It is also possible to carry a compact bicycle.

(Embodiment 3) FIG. 7 shows a compact bicycle in which a folding mechanism is provided in the front fork.

The frame 58 of this bicycle has a head tube 59 at the tip, a standing pipe 60, and two lower pipes 61 connecting the upper end of the standing pipe 60 and the upper end of the head tube 59.
Having. Here, the front fork 63 holding the front wheel 62
A folding mechanism 64 is provided in the upper part of the front fork, that is, near the head tube 59. The folding mechanism 64 can fold and fix the straight front fork 44. At this time, the shape of the front fork 44 may not be a straight line, but may be another shape that facilitates compactification.

When carrying a compact bicycle, the folding fixture provided on the folding mechanism 64 is loosened and the front fork 63 is bent toward the lower pipe 61 of the bicycle. Then, the front wheel 62 is housed between the two lower pipes 61, and is fixed by the folding fixture in a state where the front wheel 62 is rotatable.

In this way, the compact bicycle is
At the time of transportation, the front wheel 62 is fixed to the tip of the bent front fork 63, and the compact bicycle can be easily carried by being housed between the two lower pipes 61.

Further, since it is not necessary to remove the front wheel 62, it can be easily made compact.

By providing the two lower pipes 61 in this manner, the front wheel 6 of the bicycle is provided between the two lower pipes 61.
Since the 2 is sandwiched, the bicycle can be easily carried in a compact state.

The standing pipe 60 and the head tube 59
A frame 59 having a lower pipe 61 that does not interfere with the storage of the front wheel 62 may be provided between and. For example, the lower pipe 61 may not be provided, or the position of one lower pipe 61 may be set slightly above the straight line between the head tube 59 and the vertical pipe 60 so that the front wheel 62 can be housed between the head tube 59 and the vertical pipe 60. You may comprise in the position shifted laterally.

(Embodiment 4) FIG. 8 shows a compact bicycle in which a rear wheel gripping tool is provided on a bicycle frame at a position forward of a normal rear wheel mounting position and rearward of a front wheel. .

The frame 65 of this bicycle has a vertical pipe 6
A chain stay 69 connecting the bearing 6 of the rear wheel 67 and the rear wheel 67 is provided with a downwardly projecting portion 70. A notch 72 for fitting the rear wheel hub 71 is provided at the bearing position 68 of the rear wheel. At this time, the rear wheel 67 is attached to the protrusion 70.
A rear wheel hub 71 serving as a shaft of the rear wheel hub and a cutout portion 73 for fitting the rear wheel hub 71 are provided. Here, the position of the projecting portion 70 is set so that when the rear wheel hub 71 is fitted and fixed to the cutout portion 73, the rear wheel 67 can rotate while being in contact with the ground.

FIG. 10 shows a bearing which can be moved while restricting the shaft in order to easily change the rear wheel bearing from the normal rear wheel to the bearing when it is made compact.

This bearing 74 is used for the rear wheel 6 in a normal state.
The notch 75 which is the mounting position of 7 and the notch 76 when it is made compact are connected as an integral bearing. That is, the cutout portion 75 and the cutout portion 76 are connected by a single groove.

With such a structure, the rear wheel 67 can be easily
The position of can be moved. With the above configuration, the positions of the front wheels and the rear wheels 67 can be moved at the same time, and the bicycle can be made more compact, and the bicycle can function as a wheel even in a compact state to facilitate transportation.

[0041]

As described above, according to the present invention, a compact bicycle can be easily moved.

[Brief description of drawings]

FIG. 1 is a side view of a bicycle showing an embodiment of the present invention.

FIG. 2 is an enlarged view of the front hawk and front wheel hub of the bicycle.

FIG. 3 is a side view showing a compact state of the bicycle.

FIG. 4 is a view of a main part of the bicycle in a compact state as seen from below.

FIG. 5 is a side view of the bicycle using the wheel gripping tool according to the embodiment of the present invention.

FIG. 6 is a side view of a bicycle that is made compact by using the front wheel gripping tool.

FIG. 7 is a side view of the bicycle showing the embodiment of the present invention.

FIG. 8 is a side view of the bicycle showing the embodiment of the present invention.

FIG. 9 is an enlarged view of the main part of the bicycle.

FIG. 10 is an enlarged view of the main part of the bicycle.

FIG. 11 is a side view of a conventional bicycle.

FIG. 12 is a side view of a conventional compact bicycle.

[Explanation of symbols]

 30 frame 34 lower pipe 35 front wheel 37 front wheel hub 39 rear wheel 44 front hawk

Claims (5)

[Claims] 1. A front wheel which is detachably attached to a front fork, and during transportation, the front wheel removed at a position rearward of a normal front wheel mounting position and forward of a rear wheel is rotatably held in a grounded state. A bicycle with a holding means on the frame. 2. The frame includes a head tube to which a handle is attached, a vertical pipe to which a saddle is attached, and two lower pipes that connect the head tube and the vertical pipe and are arranged substantially parallel to each other. The bicycle according to claim 1, wherein the book connecting pipe is provided with a holding means. 3. The holding means comprises a front wheel gripping tool that is bent so that both ends thereof face each other so as to fix the front wheel shaft of the front wheel from both sides, and the front wheel gripping tool is movably attached to the frame. The bicycle according to claim 1, further comprising: 4. The front fork is provided with a folding mechanism, and during transportation, the front fork is folded and is rotatably held at a position rearward of a normal front wheel mounting position and forward of the rear wheel while being grounded. Bicycle with a front hawk. 5. A holding means for mounting a detachable rear wheel on a rear portion of the frame, and holding the rear wheel, which is detached at a position in front of a normal rear wheel mounting position and at a position rearward of the front wheel, in a grounded state during transportation. Bicycle mounted on the frame.