JP2003165479A - Narrow-width folding bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remarkably practical narrow-width folding bicycle foldable in a compact form at a narrow width and possible to be easily and quickly folded and assembled. <P>SOLUTION: This narrow-width folding bicycle is provided with a first folding means B formed of a hinge plate part H for splitting a main pipe A to fold them in parallel with each other, a second folding means D formed of a first crank member I capable of folding a front frame C provided with a handle 1 and a front wheel 2 in an upper and a lower ends thereof and the main pipe A in nearly parallel with each other, and a third folding means G formed of a second crank member J capable of folding a rear frame E continuously provided to the main pipe A and provided with a pedal crank shaft 4 and a rear wheel 5 and a saddle support frame F, to which a saddle 4 is fitted to an upper part thereof, in nearly parallel with each other. When the main pipe A, the front frame C, the rear frame E and the saddle support frame F are folded by the first folding means B, the second folding means D and the third folding means G, all the frames are folded in parallel with each other in compact. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding bicycle that can be compactly stored, and more specifically, a main pipe, a front frame, a rear frame, and a saddle support frame that are substantially parallel to each other. The present invention relates to a narrow foldable bicycle that can be folded and made compact in width.

[0002]

2. Description of the Related Art Folding bicycles conventionally proposed are
Generally, a main pipe connecting front and rear parts is configured to be laterally foldable at a central part, and the front and rear wheels are folded so as to overlap (hereinafter referred to as "first conventional bicycle") and 2 It is roughly divided into those constructed so as to be able to be folded extremely compactly in the above locations (hereinafter referred to as "second conventional bicycle").

The folding width of the first conventional bicycle (the front-back width in the folded state) is about half that of the assembled state, so it is inconvenient to store it in a narrow place for a long period of time. However, it is convenient when it is simply stored in a place such as a front door temporarily or for a short period of time.

However, places such as entrances are
Generally, there is a sufficient space in the vertical direction, but the space for storing the bicycle in the horizontal direction is not so large.

Since the first conventional bicycle is folded in a state in which the front and rear wheels are overlapped with each other, the folding width (left and right in the folded form) is large, so that there is not much space in the horizontal direction at the entrance. If it is stored in such a place, it will be an obstacle to cleaning and passing.

Also, since it is folded laterally,
The horizontal space required for folding and assembling becomes large, and it is difficult to perform folding and assembling work easily and quickly.

On the other hand, since the second conventional bicycle can be folded into an extremely compact form as compared with the first conventional bicycle, it can be stored well even in a narrow space. However, since there are many folding points and folding and assembling are extremely complicated, even if it is suitable for long-term storage, it is naturally unsuitable for temporary or short-term storage at a place such as a front door. It is appropriate. Also, since the folding and assembling processes are complicated,
It is not suitable for quick storage and riding, and lacks practicality. Moreover, in the folded state, the front wheels and the rear wheels are positioned in the front-rear direction, so that the front wheel and the rear wheel have a combined width dimension and a wide width. there were.

[0008]

SUMMARY OF THE INVENTION According to the present invention, without causing such a problem, in the folded state, the width of the vehicle body can be narrowed, and the front wheels and the rear wheels are overlapped and arranged in parallel with each other. An object is to provide an extremely practical narrow folding bicycle that can be narrowed to a width of an individual piece, can be folded compactly, and can be folded and assembled easily and quickly. Is.

[0009]

The present invention has been made to solve the above problems, and the first invention is that the main pipe A can be halved and folded so as to be parallel to each other. The first folding means B, the second folding means D capable of folding the main pipe A and the front frame C provided with handles and front wheels at the upper and lower ends thereof, and the second folding means D are connected to the main pipe A. A rear frame E provided with a pedal crankshaft and a rear wheel and a saddle support frame F having a saddle attached to an upper part thereof are provided with a third folding means G capable of being folded substantially parallel to each other, and a first folding means B and a first folding means B are provided. When the main pipe A, the front frame C, the rear frame E, and the saddle support frame F are folded by the 2nd folding means D and the 3rd folding means G, all the frames are made substantially parallel and compact. Narrow fold self It is a car. The width of the entire bicycle can be made small, and the width of the front and rear wheels can be narrowed to the width of one tire with the front and rear wheels overlapped in parallel, making it compact and foldable for easy carrying. Moreover, folding and assembling work can be performed easily and quickly. Therefore, it can be easily stored in the trunk of an automobile and is easy to carry without disturbing movement on a train or bus.

In the second invention, the first folding means B is constituted by a butterfly plate portion H provided at an intermediate portion of the main pipe A, and the second folding means D is composed of the main pipe A and the front frame. The first folding member G is constructed by a first crank member I which is bridged between the main pipe A and the front frame C so that the main pipe A and the front frame C are separated from each other, and the third folding means G includes a saddle support frame F and a rear frame E. It is a narrow folding bicycle including a second crank member J that is bridged in between and a saddle support frame F and a rear frame E are moved toward and away from each other. Each of the folding means B, D, G is composed of the butterfly plate portion H, the first crank member I, and the second crank member J, so that a simple structure is possible, and each portion of the bicycle is compact and simple. It can be folded quickly. Therefore, the main pipe A is folded in half around the hinge portion H of the first folding means B, and the main pipe A and the front frame C are substantially parallel to each other by the first crank member I of the second folding means. Thus, the saddle support means F and the rear frame E can be folded substantially parallel to each other by the second crank member of the third folding means G, and the whole bicycle can be easily and compactly folded and carried and stored.

In a third aspect of the invention, the first folding means B has a first fixing and holding means capable of fixing the butterfly board H in a closed state, and the second folding means D is the first. The crank member I has a second fixing and holding means that can be fixed in the extended state, and the third folding means G can be fixed in the extended state of the second crank member J. The main pipe A is laterally connected and fixed by fixing each of the first, second and third fixing and holding means, and the front frame C and the saddle support frame are provided. F
Is a narrow folding bicycle that is vertically installed and is configured so that the entire vehicle can run. The first, second and third fixing and holding means make the main pipe A laterally continuous and fixed, and the front frame C and the saddle support frame F vertically stand to be firmly fixed to each other. Therefore, it is possible to drive safely without causing any trouble during traveling. That is, the fixed state of the first, second, and third fixing means is not inadvertently released during traveling, and the vehicle can travel in a safe state.

According to a fourth aspect of the invention, the butterfly plate portion H at the half-divided portion of the main pipe A has a hinge shape that can be opened and closed left and right,
Both sides of this hinge-shaped portion are formed in a flat plate portion, and a pair of ribs having a through hole are projectingly provided on the outer end portion of one flat plate portion, and a shaft member is inserted into this through hole to A first fixing means is provided at a central portion in the axial direction, and a pair of ribs having through holes are provided at an outer end portion of the other flat plate portion so as to project into the pair of ribs of the one flat plate portion. When closed around the shape portion, the pair of ribs of one flat plate portion enter between the pair of ribs of the other flat plate portion, and the shaft member inserted in the pair of ribs of one flat plate portion is the other. By inserting the ribs of the flat plate portion into the through holes and fixing them by the first fixing means, these flat plate portions are fixed so that they cannot be opened and closed, and the main pipe A and the rear frame E are laterally connected and fixed. It is a narrow folding bicycle constructed in. The main pipe A and the rear frame E can be easily and quickly laterally connected to each other and fixed by the first fixing means. When folding, the fixed state of the first fixing means is released and the butterfly plate portion H is removed. It is possible to easily and quickly compactly fold by simply folding. It is easy to fold and can be carried around in a folded state and stored easily.

According to a fifth aspect of the present invention, the first crank member I has one end rotatably attached to the front frame C, and has an elongated hole and a locking hole continuous to the other end of the elongated hole. Narrow folding bicycle composed of the long plate member, a short shaft attached to the main pipe A and movably inserted in the long hole of the long plate member, and a second fixing means attached to the short shaft member Is. The structure is simple, and the first crank member I when traveling
By extending and fixing with the second fixing means,
It is possible to easily and swiftly enable traveling, and at the time of folding, by simply moving the short axis of the first crank member I in the folding direction along the long hole of the long plate member, it is possible to easily and quickly fold compactly. Is possible. Folding and unfolding operations can be easily performed, and they can be easily carried and stored.

In a sixth aspect of the present invention, the second crank member J is a pair of left and right long plates that are attached along the saddle support frame F and have long holes, and the lower end is pivoted to the lower side of the rear frame E. A support member that is fitted and whose upper end is vertically movably fitted between a pair of left and right long plates on the side of the saddle support frame F, and a portion of this support member that is fitted between a pair of left and right long plates on the side of the saddle support frame F. It is a narrow folding bicycle including a short shaft provided and a third fixing means.
The structure is simple, and when traveling, the second crank member J can be extended and fixed by the third fixing means, so that the traveling can be performed easily and quickly. When folding, the short axis of the support member is used. It is possible to fold easily and quickly in a compact manner only by moving it along the long hole of the long plate in the folding direction. Folding and unfolding operations can be easily performed, and they can be easily carried and stored.

In a seventh aspect of the present invention, the first, second, and third fixing means include a circular main body rotatably attached to the shaft member and the short shaft, and an eccentric shaft hole provided in the circular main body. A narrow folding bicycle including a shaft member inserted into a circular body and a handle portion for locking extending from a circular main body portion. The first, second and third fixing means can have a simple structure, and the first, second and third fixing means can surely and firmly fix them, and carelessly fix them. It is safe because the condition is not released. The locking handle can be easily fixed by rotating the locking handle in the locking direction, and the locked state can be easily released by rotating the locking handle in the unlocking direction.

In an eighth aspect of the invention, the main pipe A, the front frame C, the rear frame E, and the saddle support frame F are all brought into close proximity to each other in a substantially parallel manner, and the overall lateral width is made compact. It is a narrow folding bicycle in which the upper and lower parts are fastened by a laterally-substantially H-shaped belt having a peelable adhesive portion at its end. By tightening with a belt, the entire bicycle can be safely carried from the folded state without being opened accidentally. Also, since the belt is approximately H-shaped laterally, you can easily wrap this belt around a folded bicycle and tighten it easily. There is no.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a narrow folding bicycle according to the present invention will be described below in detail with reference to the accompanying FIGS.

FIG. 1 is a side view showing a running state of an embodiment of a narrow folding bicycle according to the present invention, and FIG. 2 is a main pipe, a front frame and a saddle support frame of the narrow folding bicycle. FIG. 3 is a side view showing a folded state of FIG. 3, and FIG. 3 is a side view showing a state in which the main pipe is halved and folded from the state shown in FIG.

As shown in these drawings, the narrow folding bicycle according to the present invention has a front frame C provided with a handle 1 and a front wheel 2 and a saddle support frame F provided with a saddle 3.
And a rear frame E provided with the pedal crankshaft 4 and the rear wheel 5, and a side view connecting the two frames C and E by being bridged between the rear frame E and a substantially central portion in the height direction of the front frame C. It has a substantially V-shaped main pipe A.

One end of the main pipe A is pivotally attached to approximately the center of the front frame C in the height direction, and the other end is integrally connected to the rear frame E.

Further, the main pipe A can be folded in half by a first folding means B composed of a butterfly plate portion H at an apex portion of an intermediate portion thereof. Can be folded by the second folding means D so as to be substantially parallel to each other, and the rear frame E and the saddle support frame F connected to the main pipe A can be folded by the third folding means G. .

FIG. 4 is a partial perspective view showing a portion of the narrow folding bicycle having the first folding means composed of a hinge portion.

The hinge plate portion H constituting the first folding means B of the substantially V-shaped main pipe A has a hinge shape that can be opened and closed to the left and right, and both sides of the hinge shape portion 6 are flat plate portions 7, 8. Is formed in.

A pair of ribs 10 and 10 each having a through hole 9 are projectingly provided on the outer end portion of the one flat plate portion 7.
A shaft member 11 is inserted into the shaft member 11 and a first fixing means 12 which will be described later is provided at a central portion in the axial direction thereof, and a pair of ribs 10 and 10 of one flat plate portion 7 is provided at an outer end portion of the other flat plate portion 8. A pair of ribs 15 each having a through hole 13 with a space between
15 are projected.

When the butterfly plate-shaped portion 6 is closed as the center, the pair of ribs 10 and 10 of the one flat plate portion 7 are inserted between the pair of ribs 15 and 15 of the other flat plate portion 8, The shaft member 11 inserted into the pair of ribs 10 and 10 of the flat plate portion 7 enters the through hole 13 of the rib 15 of the other flat plate portion 8 and is fixed by the first fixing means 12 which will be described later. The flat plate portions 7 and 8 are fixed so as not to be opened and closed, and the main pipe A and the rear frame E are laterally connected and fixed.

Further, when the fixed state by the first fixing means 12 is released, it becomes a foldable state.

FIG. 5 is a partial perspective view showing a portion of the narrow folding bicycle having the second folding means composed of the first crank member.

As shown in FIG. 5, the front frame C has a head pipe 14 and a handle post 16 which is fitted on the upper end of the head pipe 14 so as to extend and contract vertically.
The front pipe 2 is integrally provided with the head pipe 14 and includes a front fork 17 that rotatably supports the front wheel 2 through the head pipe 14 by rotating the handle post 16 within a certain angle range.

The handle post 16 is the head pipe 14.
Further, the head pipe 14 is fitted and held so as to be relatively rotatable and fixable by a fixing portion 18 at the upper end of the head pipe 14.
The handle 1 is attached to the upper end of the handle post 16.

The front frame C and the main pipe A are foldable by the second folding means D as described above, and the second folding means D is the first crank means I.
It is composed of.

One end of the first crank means I is rotatably attached to the front frame C, and an elongated hole 19 and a locking hole 20 connected to the other end of the elongated hole 19 are provided. Long plate material 21 and long plate material 2 attached to the main pipe A
1, a short shaft 22 movably inserted in the long hole 19, and a second fixing means 23 to be described later attached to the short shaft 22.
It consists of and.

FIG. 6 is a partial perspective view showing a portion of the same-width narrow-folded bicycle where the third folding means composed of the second crank member is provided.

As shown in FIG. 6, the saddle support frame F is composed of a saddle support pipe 24 to which the saddle 3 is attached and a saddle body pipe 25 into which the saddle support pipe 24 is vertically movably fitted and held. The fixing position with respect to the saddle body pipe 25 can be changed by an appropriate fixing means (not shown) provided between this and the saddle body pipe 25, and the saddle height can be changed stepwise or steplessly. It is configured to be adjustable.

As described above, the saddle support frame F is foldable by the third folding means G substantially in parallel with the rear frame E, and the third folding means G has the second crank member J. It is composed of.

The second crank member J has a pair of left and right long plates 27 and 27 attached along the saddle support frame F and having long holes 26 formed therein, and a lower end of the rear frame E.
Of the support member 28 pivotally attached to the lower side of the upper end of the saddle support frame F on the saddle support frame F side so as to be vertically movable between the pair of left and right long plates 27, 27 on the saddle support frame F side. The pair of left and right long plates 27, 27 is provided at a portion fitted between the long plates 27, and an end portion of the short shaft 29 is inserted into the long hole 26 and a third fixing means 30 described later.

The rear frame E is integrally extended to the main pipe A, and a pedal crankshaft 4 to which a pair of cranks 32 having left and right pedals 31 and a drive sprocket wheel 33 are attached is bearing-supported. A pair of rear wheel support frames 36 supporting a rear wheel shaft 35 provided with a support portion (not shown), a rear wheel 5 and a driven sprocket wheel 34, and a drive sprocket wheel 3
3 and a driven sprocket wheel 34, and an endless chain 37 that is bridged (see FIG. 1).

Next, the above-mentioned first, second and third fixing means 1
2, 23, and 30 will be described with reference to FIGS. 4, 5, and 6, these first, second, and third fixing means 12,
Reference numerals 23 and 30 denote a circular main body 38 rotatably attached to the long shaft 47 and the short shafts 22, 29 attached to the shaft member 11, and an eccentric shaft hole 3 provided in the circular main body 38.
The shaft member 40 is inserted into the shaft 9 and the handle member 41 for locking extended from the circular main body 38.

By rotating the handle portion 41 in the locking direction, the circular main body portion 38 is eccentrically rotated about the eccentric shaft hole 39 to be in the locked state.

FIG. 7 is a perspective view of a belt for fastening and binding the folded bicycle shown in FIG. 3 in the narrow folding bicycle.

The belt 42 is formed in a substantially horizontal H shape, and the upper and lower pieces are provided with peelable adhesive portions 43, 44, 45 and 46 at their opposite ends.

In the narrow folding bicycle constructed as described above, each part has the first folding means B (see FIG. 4), the second folding means D (see FIG. 5) and the third folding means. In the state in which the main pipe A is not folded by the means G (see FIG. 6), the main pipe A is horizontally connected and fixed, and the front frame C and the saddle support frame F are vertically erected as shown in FIG. As a result, the entire vehicle is ready for riding.

When each part is folded by the second folding means D and the third folding means, as shown in FIG. 2, the front frame C is folded so as to be substantially parallel to the front side of the main pipe A. Then, the saddle support frame F is folded so as to be substantially parallel to the rear side of the main frame A.

Next, when the main pipe A is halved by the first folding means B and folded so as to be parallel to each other, as shown in FIG. 3, the respective parts are brought into close contact with each other and the lateral width is narrowed. .

At this time, the front wheels 2 and the rear wheels 5 are parallel to each other and have a width corresponding to one tire, and the steering wheel 1 and the saddle 3 are also parallel to each other so that the entire bicycle is in a very compact folded state. Become.

Further, in a compact folded state as shown in FIG. 3, it can be carried more easily if it is fastened and tied up with the substantially horizontal H-shaped belt 42 shown in FIG. That is, after tightening, these opposing adhesive parts 43, 4
By bonding 4, 45 and 46, the bicycle in a compactly folded state can be bound and carried.

As described above, the narrow folding bicycle according to the embodiment of the present invention can be compactly folded by reducing the lateral width of the entire bicycle, and the front wheels and the rear wheels are oriented parallel to each other. This is a very practical narrow folding bicycle that can be made as wide as one tire and can be folded and assembled easily and quickly.

By folding in such a compact manner, it can be easily carried and can be easily stored even in a narrow space such as a front door, and it does not interfere with cleaning and communication.

The present invention is not limited to the above-described embodiments, modifications and application examples, and various modifications, design changes and the like within the technical scope of the present invention are included in the technical scope thereof. It goes without saying that it is something to do.

[0049]

According to the first aspect of the invention, the main pipe A, the front frame C, the rear frame E and the saddle support frame are composed of the first folding means B, the second folding means D and the third folding means G. F
Provided is a narrow folding bicycle in which all frames are compacted in a substantially parallel shape when folded.
In the folded state, the width of the bicycle as a whole can be made small, and the front and rear wheels can be narrowed to the width of one tire in a state of being parallel and overlapping, allowing for compact folding. It is easy to carry around, and folding and assembling work can be done easily and quickly.

According to the second aspect of the invention, the first folding means B comprises the butterfly plate portion H, and the second folding means D is the first crank member I.
And the third folding means G is a narrow folding bicycle including the second crank member J. Each folding means B, D, G
Is a butterfly plate portion H, a first crank member I, a second crank member J
It is possible to fold each part of the bicycle compactly, easily and quickly, because it has a simple structure.

According to the third invention, the first folding means B has the first fixed holding means, the second folding means D has the second fixed holding means, and the third folding means G is A narrow folding bicycle having a third fixed holding means is provided.

The main pipe A is laterally continuously connected and fixed by the first, second and third fixing and holding means, and the front frame C is provided.
The saddle support frame F and the saddle support frame F are vertically set up and can be firmly fixed to each other, so that the vehicle can travel safely without causing any trouble during traveling.

According to the fourth aspect of the invention, the butterfly plate portion H is provided in the hinge-shaped portion, the one and the other flat plate portions, and the one flat plate portion, and the through hole into which the shaft member having the first fixing means is inserted. The pair of ribs having the above-mentioned shape enter the gap of the other rib, and the shaft member enters the through hole of the other rib and is fixed by the first fixing means, so that both flat plate portions are fixed so as not to be opened and closed, and the main pipe A There is provided a narrow folding bicycle in which the rear frame E and the rear frame E are horizontally connected and fixed.

The main pipe A and the rear frame E can be simply and quickly placed side by side in a laterally connected state and fixed by the first fixing means. When folding, the fixed state of the first fixing means is released and the butterfly plate portion is released. By simply folding the H, the folded state can be easily and quickly made compact.

According to the fifth invention, the first crank member I
However, when the short axis of the main pipe A is moved into the locking hole, the second fixing means fixes the long hole and the locking hole of the long plate whose one end is rotatably attached to the front frame C. There is provided a narrow folding bicycle adapted to the above.

The structure is simple, and when traveling, the first crank member I is extended and fixed by the second fixing means, so that the traveling state can be made simple and quick. When folding, simply by moving the short axis of the first crank member I in the folding direction along the long hole of the long plate member,
It can be folded easily and quickly in a compact manner.

According to the sixth invention, the second crank member J
However, in the long holes of the pair of left and right long plates of the saddle support frame F,
The short axis of the support member, the lower end of which is pivotally attached to the lower side of the rear frame E, is fitted into the long hole of the long plate, and is vertically moved and fixed by the third fixing means when extended. A narrow folding bike made is provided.

The structure is simple, and when traveling, the second crank member J can be extended and fixed by the third fixing means to make the traveling state easily and quickly. By simply moving the shaft in the folding direction along the long hole of the long plate, it is possible to fold easily and quickly in a compact manner.

According to the seventh invention, the first, second and third fixing means are rotatably attached to the shaft member and the short shaft of the circular main body and inserted into the eccentric shaft hole of the circular main body. Provided is a narrow folding bicycle which is fixed by rotating a handle portion for locking around a shaft member in a locking direction.

The first, second and third fixing means can have a simple structure. Moreover, the first, second, and third fixing means can be securely and firmly fixed, and the fixed state is not released accidentally, which is safe.

According to the eighth aspect of the present invention, the main pipe A, the front frame C, the rear frame E, and the saddle support frame F, which are folded in close proximity to each other in a substantially parallel shape and have a compact overall width, are formed into a substantially H-shaped belt. There is provided a narrow folding bicycle adapted to be fastened by means of, and the peelable adhesive portions of the opposite ends of the belt are adhered and fastened.
By tightening with a belt, you can safely carry the entire bicycle without accidentally opening it from the folded state.

[Brief description of drawings]

FIG. 1 is a side view showing a running state of an embodiment of a narrow folding bicycle according to the present invention.

FIG. 2 is a side view showing a state in which a main pipe, a front frame, and a saddle support frame which have the same narrow folding width and are rotated are folded.

FIG. 3 is a side view showing a state in which the main pipe is halved and folded from the state shown in FIG. 2 in the same narrow folding bicycle.

[Fig. 4] A first hinge part of the narrow-width foldable bicycle.
It is a partial perspective view which shows the part of a folding means.

FIG. 5 is a partial perspective view showing a portion provided with a second folding means including a first crank member in the narrow width folding bicycle.

FIG. 6 is a partial perspective view showing a portion provided with a third folding means including a second crank member in the narrow folding bicycle.

FIG. 7 is a perspective view of a belt for tightening and binding the folded bicycle shown in FIG. 3 in the narrow folding bicycle.

[Explanation of symbols]

A is the main pipe, B is the first folding means, C is the front frame, D is the second folding means, E is the rear frame, F is the saddle support frame, G is the third folding means, and H is the hinge plate. Part, I is the first crank member, J is the second crank member, 1 is the handlebar, 2 is the front wheel, 3 is the saddle, 4 is the pedal crankshaft, 5
Is a rear wheel, 6 is a hinge-shaped portion, 7 is a flat plate portion, 8 is a flat plate portion, 9
Is a through hole, 10 is a rib, 11 is a shaft member, 12 is a first fixing means, 13 is a through hole, 14 is a head pipe, 15 is a rib, 16 is a handle post, 17 is a front fork, 18 is a fixing portion, 19 Is a long hole, 20 is a locking hole, 21 is a long plate material, 2
2 is a short shaft, 23 is a second fixing means, 24 is a saddle support pipe, 25 is a saddle body pipe, 26 is a long hole, 27 is a long plate, 28 is a support member, 29 is a short axis, and 30 is a third fixing means. ,
31 is a pedal, 32 is a crank, 33 is a drive sprocket wheel, 34 is a driven sprocket wheel, 35 is a rear wheel shaft, 36 is a rear wheel support frame, 37 is an endless chain, 38 is a circular main body portion, 39 is an eccentric shaft hole, 40 Is the shaft material,
Reference numeral 41 is a handle portion for locking, 42 is a sideways substantially H-shaped belt, and 43, 44, 45 and 46 are adhesive portions.

Claims (8)

[Claims] 1. A first folding means B capable of folding the main pipe A in half so as to be parallel to each other.
And a second folding means D capable of folding a main frame A and a front frame C provided with handles and front wheels at upper and lower ends, and a pedal crankshaft and a rear wheel connected to the main pipe A. The rear frame E provided and a saddle support frame F having a saddle attached to the upper part are provided with a third folding means G capable of being folded substantially parallel to each other, and a first folding means B, a second folding means D and a first folding means D are provided. When the main pipe A, the front frame C, the rear frame E, and the saddle support frame F are folded by the three-folding means G, all the frames are configured to be compact in a substantially parallel shape. Narrow folding bicycle. 2. The first folding means B is composed of a butterfly plate portion H provided at an intermediate portion of the main pipe A, and the second folding means D is provided.
Is composed of a first crank member I that is bridged between the main pipe A and the front frame C to move the main pipe A and the front frame C close to and away from each other, and the third folding means G is
The second crank member J, which is bridged between the saddle support frame F and the rear frame E so that the saddle support frame F and the rear frame E are moved toward and away from each other.
Narrow folding bicycle described in. 3. The first folding means B has first fixing and holding means capable of fixing the butterfly plate portion H in a closed state, and the second folding means D has a first crank member I. It has a second fixing and holding means that can be fixed in the stretched state, and the third folding means G is a third that can be fixed in the stretched state of the second crank member J. By having the fixing and holding means, and fixing the first, second, and third fixing and holding means, respectively, the main pipe A is laterally connected and fixed, and the front frame C and the saddle support frame F are vertically arranged. The narrow folding bicycle according to claim 2, wherein the narrow folding bicycle is configured to stand upright so that the entire bicycle can run. 4. A hinge plate portion H at a half-divided portion of the main pipe A has a hinge shape that can be opened and closed left and right, and both sides of the hinge shape portion are formed into flat plate portions, and one flat plate portion is formed. A pair of ribs each having a through hole are projectingly provided at the outer end portion of the shaft.
A fixing means is provided, and a pair of ribs having through holes are provided at the outer end of the other flat plate portion so as to project into the pair of ribs of the one flat plate portion. When this happens, the pair of ribs of the one flat plate portion enter between the pair of ribs of the other flat plate portion, and the shaft member inserted in the pair of ribs of the one flat plate portion penetrates the rib of the other flat plate portion. The flat plate portion is fixed so as not to be opened and closed by entering the hole and fixing by the first fixing means, and the main pipe A and the rear frame E are laterally continuously connected and fixed. The narrow folding bicycle described in 3. 5. The first crank member I is a front frame C.
A long plate member having one end rotatably attached to the main plate A and a long hole member provided with a long hole and a locking hole continuous to the other end side of the long hole member; The narrow folding bicycle according to claim 2, 3 or 4, which is composed of a short shaft that can be inserted and a second fixing means that is attached to the short shaft. 6. The second crank member J has a pair of left and right long plates attached along the saddle support frame F and having long holes formed therein, and a lower end pivotally attached to a lower side of the rear frame E and an upper end thereof. A support member that is vertically movably fitted between a pair of left and right long plates on the side of the saddle support frame F, and a short member provided in a portion of the support member that is fitted between the pair of left and right long plates on the side of the saddle support frame F. The narrow folding bicycle according to claim 2, 3, 4, or 5, which comprises an axis and a third fixing means. 7. The first, second, and third fixing means include a circular body portion rotatably attached to the shaft member and the short shaft,
7. The narrow folding according to claim 4, 5 or 6, comprising a shaft member inserted into an eccentric shaft hole provided in the circular main body, and a lock handle portion extending from the circular main body. Tatami bicycle. 8. The main pipe A, the front frame C, the rear frame E, and the saddle support frame F are all arranged in parallel with each other in close proximity to each other so that the overall width of the frames is compact, and the two end portions are opposed to each other. The narrow folding bicycle according to any one of claims 1 to 7, wherein the upper and lower portions are fastened with a substantially horizontal H-shaped belt having a peelable adhesive portion.