JP2003137163A - Connecting device of folding bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting device of a holding bicycle capable of suppressing catching of a rider's clothes, etc., on a hinge lever to the minimum when connecting. SOLUTION: When hinge bodies 6 and 7 are connected, a rotation center axis 11 is rotated by a hinge lever 12 with a tightening nut 15 of a tightening connector 13 being engaged with the hinge body 6, and the tightening connector 12 is moved toward the rear hinge body 7. As a result, the front hinge body 6 engaged with the tightening connector 13 is drawn toward the rear hinge body 7 so that the hinge bodies 6 and 7 are connected to each other. The device is disposed so that the hinge lever 12 is located along the rear hinge body 7 and a rear frame pipe 3B when the hinge bodies 6 and 7 are connected to each other. Accordingly, the size of projection of the hinge lever 12 from the rear hinge body 7 and the rear frame pipe 3B are suppressed to the minimum and catching of the rider's clothes on the hinge lever 12 can be suppressed to the minimum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for connecting a hinged portion of a folding bicycle.

[0002]

2. Description of the Related Art As a folding bicycle, utility model registration 260
There are those disclosed in Japanese Patent No. 0808 and Utility Model Registration No. 2600809. In this folding bicycle, as shown in FIGS. 10 to 12, an intermediate portion of a frame pipe 53 that connects a front vehicle body having a head pipe 51 and a rear vehicle body having a standing pipe 52 is divided into front and rear parts. A pair of hinges 55 (consisting of a front hinge 56 and a rear hinge 57) rotatable relative to each other about a hinge shaft 54 are provided at the divided portions of the pipe 53, and these hinges 55 are separated. By doing so, the front body and the rear body of the bicycle can be folded so as to overlap with each other.

In this specification, the front wheel side of the folding bicycle is the front side and the rear wheel side is the rear side. Rear hinge 57
A hinge lever 58 having an eccentric shaft 58a at its base is rotatably attached to the base of the hinge lever 58, and a tightening nut 59 is screwed to the eccentric shaft 58a of the hinge lever 58. The bolt 60 is inserted with its base end side being rotatable. And the front hinge 5
In the concave storage portion 56a provided in 6, the tightening nut 59
And a tightening cap 62 that covers the tightening nut 59.
The tightening bolt 60 is arranged so as to be rotated forward so as to be stored therein, and thereafter, the tip end of the hinge lever 58 is rotated backward so that the eccentric shaft portion 58 of the hinge lever 58 is accommodated.
The tightening bolt 60 in which a is inserted is moved rearward, and the tightening nut 59 of the tightening bolt 60 pulls in the front part of the bicycle to which the front hinge body 56 is attached to draw the front body and the rear side of the bicycle. It is configured to be connected to the vehicle body. Further, in this state, the tip end of the hinge lever 58 is engaged with the hook 61 attached to the standing pipe 52 to prevent the hinge lever 58 from rotating, so that the tightening nut 59 of the tightening bolt 60 and A portion of the tightening cap 62 is locked so as not to be separated from the storage portion 56a of the front hinge body 56.

According to this folding bicycle coupling structure, the front body and the rear body of the bicycle can be coupled and separated by a relatively simple operation, and the coupled state is locked at the time of coupling. Therefore, the reliability during use is also good.

Further, since the tightening bolt 60, the tightening nut 59 and the tightening cap 62 are housed in the housing part 56a of the front hinge body 56 at the time of connection, there is an advantage that the clothes of the driver are not easily caught. is there.

[0006]

However, in the above-described folding bicycle connecting structure, since the hinge lever 58 has a shape projecting above the frame pipe 53 and reaching the standing pipe 52 at the time of connection, this There is a risk that clothes will be caught in the place and that it may look unattractive.

The hinge lever 58 has an eccentric shaft portion 58a.
Since it is only supported at one point by the hinge lever 5
When rotating 8 rearward, the occupant's force acts eccentrically only from above the location of the eccentric shaft portion 58a that engages with the tightening bolt 60, and the hinge lever 58 near the eccentric shaft portion 58a. A twisted state biased to the
Durability may decrease.

Further, when the folded state is changed to the coupled state, the tightening bolt 60, the tightening nut 59, and the tightening cap 62 must be manually stored in the storage portion 56a of the front hinge 56. In this case, there is a disadvantage that it takes time.

The present invention solves the above-mentioned problems. It is possible to minimize the catch on the driver's clothes and the like, obtain good durability, and minimize the labor at the time of coupling. It is an object of the present invention to provide a folding bicycle coupling device capable of performing the above.

[0010]

In order to solve the above-mentioned problems, a folding bicycle connecting device according to a first aspect of the present invention is provided on a frame pipe of a folding bicycle and pivots with respect to each other about a hinge shaft. A pair of hinges that are rotatably supported, a rotation center shaft that is rotatably supported by one of the hinges of the hinge, and a rotation center shaft that is attached to the rotation center shaft and is integrally formed. And a hinged connector that is rotatably supported on the rotation center shaft at the base end side thereof, and an engaging portion that engages with the other hinge body is provided at the free end side thereof. When connecting the hinges, the hinged lever is rotated in a state where the engaging portion of the tightening connector is engaged with the other hinge member, and the rotation center shaft is rotated by the hinge lever. The other hinge body engaged with the tightening connection body by moving the other hinge body to one hinge body side. Square it is configured to bind attracted to hinge side of the characterized in that the hinged lever is arranged along the hinge member and the frame pipe upon binding.

According to this structure, since the hinge lever is arranged along the hinge body and the frame pipe at the time of connection, it is possible to minimize the protruding portion of the hinge lever to the outside. It is possible to reduce the driver's clothes from being caught by the hinge lever.

According to a second aspect of the present invention, in the folding bicycle coupling device according to the first aspect, an eccentric shaft portion is formed on the rotation center shaft, and an eccentric shaft portion on the rotation center shaft is formed. It is characterized in that the hinge levers are attached at two locations, an upper portion and a lower portion of the location.

According to this structure, when the hinge lever is rotated to move the tightening connection body to the one hinge body side by the eccentric shaft portion of the rotation center shaft, the force that acts on the eccentric shaft portion from the hinge lever. Acts from both the upper side and the lower side, the twisting force does not act on the eccentric shaft portion in a biased manner, and the durability of the rotation center shaft is maintained in a good state.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the coupling device for a folding bicycle according to claim 1, the other hinge body is provided with a housing space for housing at least a part of the tightening connector at the time of connection, and the tightening connector at the time of connection is an accommodation space for the other hinge member. Urging means for urging the hinged body so that the hinged body is housed in the hinge, and when the hinges are rotated from the folding posture to the coupling posture, the urging force of the urging means causes the tightening connecting body to move to the other side. It is characterized in that it is configured to be housed in the housing space of the hinge body.

According to this structure, at least a part of the tightening connection body is housed in the storage space provided in the other hinge body at the time of connection, so that the protruding portion of the tightening connection body to the outside is minimized. As a result, it is possible to reduce the driver's clothes from being caught in the engaging portion of the tightening connection body. Further, when the hinges are rotated from the folded position to the combined position, the tightening connector is automatically stored in the accommodation space of the other hinge, so that the tightening bolts are fixed as in the conventional case. It is not necessary to manually store the tightened connection body such as in the storage space of the hinge body, and the labor at this time can be saved.

According to a fourth aspect of the present invention, in the folding bicycle connecting device according to any one of the first to third aspects, the hinge lever is provided with a bulging portion for putting a finger. And

According to this structure, it is easy to put a finger on the hinge lever and the operability is improved. Further, as compared with the case of forming a recess for hanging a finger on the hinge body or the frame of the folding bicycle, only the processing of the hinge lever is required, so that the manufacturing is easy and the manufacturing cost is low.

According to a fifth aspect of the present invention, in the folding bicycle coupling device according to any one of the first to fourth aspects, stepped portions that engage with each other are formed at the joints between the hinges. And

According to this structure, when the hinges are joined together, the stepped portions are intermeshed with each other, so that the hinges are more favorably engaged with each other and rattling between the hinges occurs. Is prevented.

A folding bicycle according to a sixth aspect of the present invention is characterized by including the folding bicycle coupling device according to any of the first to fifth aspects.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 is a right side view of a frame of a folding bicycle according to an exemplary embodiment of the present invention in a coupled state, and FIG. 2 is a perspective view of the frame of the folding bicycle in a coupled state viewed from the front right side, FIG. 3 is a perspective view of the frame in the folded state of the folding bicycle as viewed from the front right side, FIG. 4 is a perspective view of the coupling device of the folding bicycle in a coupled state, and FIG. 5 is a perspective view of the folding bicycle. 6 is a right side view of the coupling device in the coupled state, FIG. 6 is an exploded perspective view of the coupling device of the folding bicycle, and FIG. 7 is a state in which only the hinge lever is rotated from the coupling state of the folding bicycle. FIG. 8 is a right side view of FIG. 8, FIG. 8 is a perspective view showing a state where the coupling device of the folding bicycle is being folded, and FIG. 9 is a perspective view showing a state of folding the coupling device of the folding bicycle.

As shown in FIGS. 1 to 3, in this folding bicycle, an intermediate portion of a frame pipe 3 which connects a front vehicle body having a head pipe 1 and a rear vehicle body having a standing pipe 2 is divided into two portions, front and rear. A pair of hinges 5 (consisting of a front hinge 6 and a rear hinge 7) rotatable about a hinge shaft 4 (see FIG. 3) are integrally formed at the divided portions of the frame pipe 3. By providing the hinge bodies 5 in a separated state, the front body and the rear body of the folding bicycle can be folded so as to overlap each other, as shown in FIG.

The front hinge body 6 is welded to the front frame pipe 3A, and the rear hinge body 7 is welded to the rear frame pipe 3B. Although not shown in the drawings for all parts, the front wheel of the folding bicycle is rotatably supported at the lower end of the front fork which is rotatably supported by the head pipe 1. The rear wheel of the folding bicycle is rotatably supported at the rear ends of the back hawk 24 and the chain stay 25 attached to the vehicle 8. Then, the front vehicle body having the head pipe 1 for supporting the front fork for supporting the front wheels, the hanger lug 8 and the standing pipe 2 welded to the front end of the chain stay 25 for supporting the rear wheels.
The rear vehicle body having the above is connected by a frame pipe 3. Further, the hanger lug 8 rotatably supports a crankshaft to which a pedal is attached.

As shown in FIG. 1, the frame pipe 3 is
The head pipe 1 is arranged so as to be inclined so that the front side connected to the head pipe 1 is slightly upward. On the other hand, the hinge shaft 4
As shown in FIG. 3, the state in which the hinge shaft supporting cylinder portion 6a provided on the front hinge body 6 and the pair of upper and lower hinge shaft supporting cylinder portions 7a provided on the rear hinge body 7 are inserted. so,
It is arranged in a posture along the vertical direction perpendicular to the horizontal plane. Therefore, even when the front body is rotated rearward with the hinge body 5 in the separated state, the height of the front body does not change. Further, not only the standing pipe 2 is coupled to the rear frame pipe 3B to which the rear hinge body 7 is welded, but also the upper end of the upwardly extending pipe 9 extending above the hanger lug 8 is coupled to improve rigidity. Has been.

As shown in FIGS. 4 to 6, in the rear hinge body 7, the rotation center shaft 11 is a top and bottom portion 2 which protrudes to the right side.
It is vertically inserted into a circular hole 7c provided in the shaft support portion 7b at a certain position, and the rotation center shaft 11 has a substantially vertical posture perpendicular to the center line of the frame pipe 3 (hence,
With respect to the vertical line, the upper part is rotatably supported in a posture in which the upper part is slightly inclined rearward. An eccentric shaft portion 11a is formed in the central portion of the rotation center shaft 11, and the rotation center shaft 1
A fastening connecting body 13 for connecting the hinge body 5 is rotatably supported by the first eccentric shaft portion 11a. Further, square shaft portions 11b and 11c each having a square cross section are formed on an upper portion and a lower portion of the rotation center shaft 11, and correspondingly, a cylindrical angle is formed between an upper portion and a lower portion at a base end portion of the hinge lever 12. The holes 12a and 12b are integrally formed. Then, the rectangular shaft portions 11b and 11 are inserted into the cylindrical square hole portions 12a and 12b.
The c is attached in a fitted state, and the rotation center shaft 11 is integrally rotated in accordance with the lever operation of the hinge lever 12.

As shown in FIGS. 4 and 5, the hinge lever 1
2 has a shape along the side surfaces of the rear hinge body 7 and the rear frame pipe 3B at the time of connection. In addition, the hinge lever 12 has a hole 12c formed in the center so as to be easily grasped, and a bulging portion 12d for putting a finger on the lower portion of the hinge lever 12 bulges sideways. Has been formed. As shown in FIG. 6, C-shaped retaining rings 21 and 22 are fitted to the lower end of the rotation center shaft 11 and the lower end of the hinge shaft 4 in a state of being assembled to the hinge body 5, The rotation center shaft 11 and the hinge shaft 4 are prevented from coming off.

As shown in FIGS. 4 to 6, the tightening connecting body 13 is provided.
Is a tightening bolt 14 in which the eccentric shaft portion 11a is passed through a vertical through hole 14a provided on the base end side which is the center of rotation.
And a tightening nut 15 as an engaging portion screwed into a threaded portion 14b on the free end side of the tightening bolt 14, and a cap 1 which is covered with the tightening nut 15 and coupled with a mounting screw 23.
6 and 6. The cap 16 includes a nut cover portion 16a having a substantially hemispherical end, and a cover portion 16b that laterally covers the nut cover portion 16a. Further, the front hinge body 6 has a housing recess 6b for housing the tightening nut 15 and the nut cover portion 16a of the cap 16 when the hinge body 5 is coupled, and the screw portion 14 of the tightening bolt 14.
A bolt insertion recess 6c through which b is inserted is continuously provided.

At the time of connection, the tightening nut 15 screwed into the threaded portion 14b of the tightening bolt 14 engages with the rearward wall surface (referred to as the engagement wall surface 6d) of the storage recess 6b of the front hinge body 6. To meet. Further, a portion of the front hinge 6 that is closer to the rear than the engaging wall surface 6d is laterally projected to form a guide projection 6e. In addition, at the time of connection, the tightening bolt 14 is configured so that the tightening nut 15 of the tightening connecting body 13 is favorably engaged with the engaging wall surface 6d of the front hinge body 6.
The screwing position of the tightening nut 15 with respect to the threaded portion 14b is adjusted in advance.

The bolt receiving recess 7d provided between the shaft supporting portions 7b of the rear hinge body 7 is urged by the tightening bolt 14 of the tightening connecting body 13 in the direction of contacting the side surface of the rear hinge body 7. A biasing spring 17 as a biasing means is provided. In the biasing spring 17, the central portion 17b is engaged with the threaded portion 14b of the tightening bolt 14 in a state where the ring-shaped portions 17a provided at the upper and lower portions are externally mounted on the rotation center shaft 11, and
The hooking leg portions 17c at both ends are attached to the bottom surface of the bolt accommodating recessed portion 7d in a state in which they are engaged with each other at two upper and lower positions.

Further, as shown in FIG. 6, at the joint portion between the front hinge body 6 and the rear hinge body 7, a stepped portion 6 that engages with each other is provided.
j, 6k, 7j and 7k are formed respectively. In this embodiment, in the front hinge body 6 and the rear hinge body 7, the hinge shaft 4 is more than the stepped portions 6j, 6k, 7j, 7k.
A surface is formed along the vertical direction at a position closer to it, and is vertically perpendicular to the center line of the frame pipe 3 at a position farther from the hinge shaft 4 than the stepped portions 6j, 6k, 7j, 7k. Surfaces are formed along the direction, and stepped portions 6j, 6k, 7j, 7k are formed between them. The stepped portions 6j, 6k, 7j, 7k are not provided, and the joint between the front hinge 6 and the rear hinge 7 is a smooth surface, and the smooth surfaces of the joints come into contact with each other at the time of connection. You may.

In the above structure, when folding the folding bicycle from the connecting posture shown in FIGS. 1, 2, 4 and 5, first, the hinge lever 12 is rotated forward as shown in FIG. To move. As a result, the eccentric shaft portion 11a of the rotation center shaft 11 moves forward, and the tightening connector 13 moves forward accordingly, so that the tightening nut 15 and the cap 1
6 is separated from the engaging wall surface 6d of the front hinge body 6, and the front hinge body 6 is freely rotatable with respect to the rear hinge body 7. From this state, as shown in FIG. 8, the front vehicle body provided with the front hinge body 6 and the front frame pipe 3A is rotated leftward and rearward about the hinge shaft 4, and as shown in FIG. By returning the hinge lever 12 to the rear side, the folded state as shown in FIG. 3 can be obtained.

On the other hand, when the hinge body 5 is joined from the folded state shown in FIGS. 3 and 9, first, the hinge lever 12 is rotated forward, and then the front hinge body 6 and the front frame pipe 3A. The front vehicle body provided with the hinge shaft 4
Rotate to the right front centering around, and bring the joints of the hinges 5 into contact with each other. At this time, the front hinge body 6 and the rear hinge body 7
Stepped portions 6j, 6k, 7j, 7k formed at the joint portion with
Since the front hinges 6 and the front vehicle body to which the front hinges 6 are attached are satisfactorily positioned with respect to the rear hinges 7 without rattling or the like, because they mesh with each other. The bonding strength is also improved as compared with the case where the stepped portions 6j, 6k, 7j, 7k are not provided.

Further, since the tightening connection body 13 attached to the rear hinge body 7 is biased by the biasing spring 17 so as to rotate toward the bottom surface portion of the bolt housing recess 7d of the rear hinge body 7, When the hinges 5 are joined together, the tightening nuts 15 and the caps 16 of the tightening connector 13 are attached to the front hinges 6.
It is automatically stored in the storage recess 6b. In addition, in the middle of rotating the front hinge body 6 to the right front, the tightening connecting body 13
The cap 16 temporarily contacts the guide projection 6e of the front hinge body 6, but at this time, as the front hinge body 6 rotates, the tightening connecting body 13 also resists the biasing spring 17. While rotating to the right, the stepped portions 6j, 6k, 7j, 7k come close to each other, and the guide projection 6e of the front hinge body 6 is tightened by the tightening nut 15.
Tightening connector 1 when it does not interfere with the cap 16
The tightening nut 15 and the cap 16 of No. 3 are automatically stored in the storage recess 6b of the front hinge body 6. Also, the biasing spring 17
Engages with the threaded portion 14b of the tightening bolt 14 at the central portion 17b, and engages with the bottom surface of the bolt housing recess 7d of the rear hinge body 7 at both upper and lower end portions (hooking leg portions 17c). Therefore, the balance of the biasing spring 17 is well maintained,
As a result, the positional accuracy of the tightening nut 15 and the cap 16 of the tightening connecting body 13 is kept good. Therefore, the reliability of the tightened connecting body 13 in the state of being housed in the housing recess 6b is improved.

From this state, by rotating the hinge lever 12 rearward, the eccentric shaft portion 11a of the rotating center shaft 11 is rotated.
Moves rearward, and the tightening connector 13 is pulled rearward accordingly. As a result, the tightening nut 15 strongly abuts the engaging wall surface 6d of the front hinge body 6, and the hinge bodies 5 are joined together.

The folding bicycle can be brought into the folded state or the connected state by the above-mentioned simple operation. In particular, when connecting a folding bicycle, the front hinge body 6 and the front vehicle body are simply rotated to the right front, and the tightening nut 15 and the cap 16 of the tightening connector 13 are automatically attached to the front part. Since it is stored in the storage recess 6b of the hinge body 6, it is not necessary to manually store the tightening connection body such as the tightening bolt in the storage space of the hinge body as in the conventional case. Can be omitted.

Further, according to the above-mentioned structure, the hinge lever 12 is arranged so that the rear hinge body 7 and the rear frame pipe 3 can be connected together.
Since it is arranged along the side surface of B, the protruding size from the rear hinge body 7 of the hinge lever 12 and the rear frame pipe 3B can be minimized, which allows the clothes of the driver to be released from the hinge lever. It is possible to minimize the trapping on 12.

At the time of connection, the cap 16 and the tightening nut 15 of the tightening unit 13 are housed in the housing recess 6b of the front hinge unit 6, so that the tightening unit 13 does not project to the outside. It is possible to prevent the driver's clothes from being caught in the tightening combination 13.

Further, according to the above configuration, when the hinge lever 12 is rotated to pull the tightening connecting body 13 rearward by the eccentric shaft portion 11a of the rotation center shaft 11, the hinge lever 12 is eccentric shaft portion 11a. Since the force of the occupant acting on the upper and lower sides acts on both sides of the eccentric shaft portion 11a, the eccentric shaft portion 11a does not have a problem as in the prior art in which the twisting force acts unevenly, and an unreasonable force is exerted on the rotation center shaft 11a. It becomes difficult to work and the durability is improved.

Further, according to the above construction, the hinge lever 1
Since the bulging portion 12d for hanging a finger is provided in 2, it becomes easy to put a finger on the hinge lever 12 and the operability is improved. Further, instead of providing the bulging portion 12d on the hinge lever 12, the rear hinge body 7 and the rear frame pipe 3B are provided.
In addition, if an attempt is made to form a concave portion for hanging a finger, it is necessary to process a large member, which increases the manufacturing cost. However, according to the above configuration, only the hinge lever 12 is separately processed. Therefore, the manufacturing is easy, the manufacturing cost is low, and the bulging portion 12 is
The design of the shape of d can be easily changed.

It should be noted that in the above embodiment, the rotation center shaft 11 is attached to the rear hinge body 7 side, and the hinge lever 1 is attached.
2 and the tightening connection body 13 are pivotally supported, and the hinge lever 12 is rotated rearward and the tightening connection body 13 is rotated frontward at the time of connection, but the present invention is not limited to this. Rather, the rotation center shaft 11 is attached to the front hinge body 6 side to pivotally support the hinge lever 12 and the tightening connection body 13, and at the time of connection, the hinge lever 12 is rotated to the front side to tighten the tightening connection body. 13 may be configured to rotate to the rear side, or both the hinge lever 12 and the tightening connection body 13 may be configured to rotate to the front side or the rear side.

[0041]

As described above, according to the present invention, by disposing the hinge lever along the hinge body and the frame pipe at the time of connection, the protruding portion of the hinge lever to the outside can be minimized. It is possible to reduce the possibility that the driver's clothes are caught on the hinge lever.

Further, since the hinge levers are attached at two locations, an upper portion and a lower portion of the rotation center shaft where the eccentric shaft portion is formed, the eccentric shaft portion is biased to have a twisting force. Is eliminated, and the durability of the rotation center shaft is improved.

Further, since at least a part of the tightening connection body is stored in the storage space provided in the other hinge body at the time of connection, it is possible to reduce the possibility that the driver's clothes are caught on the tightening connection body. Can be made. Further, when the hinges are rotated from the folded posture to the combined posture, the tightening connection body is housed in the accommodation space of the other hinge body by the urging force of the urging means. Unlike the conventional case, it is not necessary to manually store the tightening connection body such as the tightening bolt in the storage space of the hinge body, and the labor at this time can be saved.

Further, since the stepped portions that engage with each other are formed at the joints between the hinge bodies, when the hinge bodies are joined together, the hinge bodies will be able to mesh better with each other, and The rattling is prevented, and the bonding strength is improved as compared with the case where the stepped portion is not provided.

[Brief description of drawings]

FIG. 1 is a side view of a folded bicycle frame according to an exemplary embodiment of the present invention in a coupled state.

FIG. 2 is a perspective view of the frame in the coupled state of the same folding bicycle as seen from the front right side.

FIG. 3 is a perspective view of the frame in the folded state of the folding bicycle as viewed from the front right side.

FIG. 4 is a perspective view of the coupling device of the folding bicycle in a coupled state.

FIG. 5 is a side view of the coupling device of the folding bicycle in a coupled state.

FIG. 6 is an exploded perspective view of a coupling device for the folding bicycle.

FIG. 7 is a side view showing a state in which only the hinge lever is rotated from the coupled state of the coupling device of the folding bicycle.

FIG. 8 is a perspective view showing a state where the coupling device of the folding bicycle is being folded.

FIG. 9 is a perspective view showing a folded state of the coupling device of the folding bicycle.

FIG. 10 is a side view of a frame of a conventional folding bicycle in a coupled state.

FIG. 11 is a perspective view of the conventional folding bicycle coupling device in a coupled state.

FIG. 12 is a side view of the conventional folding bicycle coupling device in a coupled state.

[Explanation of symbols]

1 head pipe 2 vertical pipes 3 frame pipes 3A front frame pipe 3B rear frame pipe 4 hinge shaft 5 Hinges 6 Front hinge 6b Storage recess 6c Bolt insertion recess 6d engagement wall surface 6e Guide projection 6j, 6k, 7j, 7k Stepped part 7 Rear hinge 7d Bolt receiving recess 11 Rotation center axis 11a Eccentric shaft 12 Hinge lever 12c hole 12d bulge 13 Tightening connection 14 Tightening bolt 15 Tightening nut 16 caps 17 Biasing spring (biasing means)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Insulation             13-13 Katayama-cho, Kashiwabara-shi, Osaka National             Bicycle Industry Co., Ltd. F-term (reference) 3D012 BA06

Claims (6)

[Claims] 1. A pair of hinges provided on a frame pipe of a folding bicycle and rotatably supported with respect to each other about a hinge shaft, and rotatably supported by one of the hinges. A rotation center shaft, a hinge lever attached to the rotation center shaft to integrally rotate the rotation center shaft, and rotatably supported on the rotation center shaft at its base end side, and the other. Is provided with an engaging portion that engages with the hinge body on the free end side of the hinge body when the hinge body is joined. With the hinge lever being rotated, the central axis of rotation is rotated by the hinge lever to move the tightening connector to the one hinge side, so that the other hinge engaged with the tightening connector is It is constructed so that it can be pulled toward the hinge side and connected, and when the hinge lever is connected, Binding device of the folding bicycle, characterized in that it is arranged along the frame pipe. 2. An eccentric shaft portion is formed on the rotation center shaft, and hinge levers are attached at two locations, an upper portion and a lower portion of the rotation center shaft where the eccentric shaft portion is formed. The coupling device for a folding bicycle according to claim 1, wherein 3. The other hinge is provided with an accommodation space for accommodating at least a part of the tightening connector at the time of connection, and the tightening connector is accommodated in the accommodation space of the other hinge at the time of connection. An urging means for urging is provided, and when the hinges are rotated from the folded position to the combined position,
The coupling device for a folding bicycle according to claim 1 or 2, wherein the tightening connection body is configured to be housed in the accommodation space of the other hinge body by the urging force of the urging means. . 4. The folding bicycle coupling device according to claim 1, wherein the hinge lever is provided with a bulging portion for hanging a finger. 5. A stepped portion which engages with each other is formed at a joint portion between hinge bodies, respectively.
The binding device for a folding bicycle according to any one of 1. 6. A folding bicycle, comprising the folding bicycle coupling device according to claim 1.