JP2677942B2 - Folding bicycle with backpack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding bicycle,
In particular, it relates to a folding bicycle with a backpack that the user can carry while carrying it on his back.

[0002]

2. Description of the Related Art Folding bicycles can be folded compactly by folding the body frame.
It is designed to be easy to carry. By thus folding the bicycle, the field of use can be further expanded. For example, a folding bicycle can be carried on a train or the like, or can be carried on a trunk of an automobile, and the bicycle can be reassembled at a destination to freely ride on fields or mountains.

When using such a folding bicycle to enjoy cycling in the mountains, it is convenient to fold the bicycle and carry it on the back when carrying the bicycle to the summit or when there is no way to ride the bicycle. There are many things. For example, if you use a car to climb a mountain, you can only go to a road that has no road, and even if you climb to the top of the mountain, you have to go back to the car, but this method does not require you to go back.

[0004]

A conventional folding bicycle is provided with a carrying case, and the folded bicycle can be put in the carrying case and carried by the hand or hung on the shoulder. However, this makes the folded bike look great, protects the clothing of the people around it from dirt, and also holds it on your shoulders or on your shoulders for short distances, such as when moving from one vehicle to another. The purpose is to carry.

In the above carrying case, the folded bicycle is liable to shift in the case, and is not suitable for carrying a bad place for a relatively long time in the field or mountain climbing cycling. In such a case,
For example, it is very convenient to carry a folded bicycle on your back, but conventional folding bicycles do not have a backpack device, so even if you use a string, rope, etc. near you, you can fix it firmly on your back. In addition to being unstable, there was a problem that uneven parts such as the body frame and axle bite into the back, making it hard to carry.

An object of the present invention is to provide a folding bicycle with a backpack that solves the above problems.

[0007]

In order to achieve the above object, the present invention is configured such that a vehicle body frame is foldable through a connecting shaft so that front wheels and rear wheels partially overlap each other through the connecting shaft. A foldable bicycle that can be folded into a foldable bicycle is characterized in that a frame body of a backpack having a backrest and a shoulder strap is attached to a body frame at a rear portion of the bicycle.

It is preferable that the backpack is provided so that its symmetrical plane and the center of gravity of the folded bicycle coincide with each other.

The frame body of the backpack may be removably attached to the body frame of the bicycle by using a holding metal fitting made up of a pair of holding members which are removable by a fastening metal fitting.

Further, it is preferable that the frame body of the backpack has a leg frame capable of supporting the folded bicycle independently.

[0011]

According to the above construction, when the bicycle is folded and fixed, the folded bicycle is put on the backpack so as not to move, and the bicycle can be carried while carrying the backpack as it is. When riding a bicycle, the backpack is located on the side of the body frame of the bicycle, does not travel laterally beyond the thickness of the frame body of the backpack, and does not interfere with pedaling.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 5 show a first embodiment. In FIG. 1, a folding bicycle 1 has a first frame 2 and a second frame 3 which are main frames, and a support shaft 5 of a pedal 4 is provided at a connecting portion of the first and second frames 2 and 3. There is. A handle post 7 having a handle 6 at its upper end is supported by the second frame 3, and a front wheel 8 is provided at the lower portion of the handle post 7.

A first bent portion 9 including a connecting shaft, a lock nut, a lock lever and the like is provided in the middle of the second frame 3, and a second portion including a handle safety lock, a handle stopper and the like is also provided in an intermediate portion of the handle post 7. A bent portion 10 is provided.

A rear frame 11 extends rearward from the lower portion of the first frame 2, and a rear stay 12 connects the rear frame 11 and the upper portion of the first frame 2.
An axle 14 of a rear wheel 13 is attached to the rear end of the rear frame 11. A chain 15 is hung between the free wheel of the rear wheel 13 and the drive wheel of the pedal 4. In addition, a saddle 17 is attached to the upper part of the first frame 2 via an expandable frame 16. The front end of the loading platform 18 provided on the upper portion of the rear wheel 13 is attached to the rear stay 12. The upper end of an auxiliary stay 19 is fixed to the rear end of the carrier 18, and the lower end of the auxiliary stay 19 is attached to the axle 14 of the rear wheel 13.

A backpack 20 is attached to the side portion of the rear wheel 13 in a horizontally tilted manner. The backpack 20 includes a frame body 21, a back support cloth 22 and a shoulder strap 23 (both are 2
(Indicated by the dashed line) is attached.

The frame structure of the backpack 20 may be any of a quadrangle, a triangle, a truss shape and the like, but in the first embodiment, a plurality of metal pipes having a light weight and strength are joined together by using a joint to form a substantially quadrangle frame. The body is configured.

That is, in the backpack 20 of the first embodiment,
As shown in FIG. 2, a joint 21 is provided between both side frames 21a and the upper frame 21b, which are arranged in parallel at a predetermined interval.
connected by c. Further, the joints 21d connect the both side frames 21a and the lower frame 21e. A leg frame 21e is attached to the joint 21d, and the both side frames 21a can be supported by the leg frame 21e so as not to fall over the ground. The backrest cloth 22 is hung on both side frames 21a, and the shoulder strap 23 is formed on the upper frame 21b and both side frames 21a.
It is fixed at the bottom of.

The mounting structure of the folding bicycle 1 of the backpack 20 is shown in FIG. That is, one of the holding members 2 of the holding metal fitting 24 is attached to the axle 14 having the thread groove of the rear wheel 13.
4a is fitted into the screw hole 25, and the fixing nut 26 is attached to the axle 14
And fix it. Next, a pair of clamping members 24a, 24
One of the two side frames 21a of the backpack is clamped by b, the fixing bolt 27 is inserted into each screw hole of both the clamping members 24a, 24b, and the fixing nut 28 is tightened to fix the both frame 21a.

Further, the upper part of the rear stay 12 is clamped by the holding metal fitting 2
It is sandwiched by a pair of sandwiching members 29a, 29b of 9, and one end thereof is temporarily fixed using a fixing bolt 30. Next, the fixing bolt 31 is penetrated through the joint 21c of the backpack 20 and the fixing bolt 31 is inserted into the bolt hole 32 at the other end of the holding metal fitting 29, and then the fixing nut 33 is fastened and fixed. Also,
The auxiliary stay 19 of the carrier 18 and one of the both side frames 21a of the backpack 20 are fixed with a fixing bolt 34.

In the first embodiment, as described above, the backpack 20 is fixed to the body frame at the rear part of the bicycle at three points by using the two clamps 24 and 29 and the one fixing bolt 34. Therefore, in this embodiment, each fixing bolt 27,
The backpack 20 can be removed from the vehicle body frame by loosening 31, 34 and the like.

The attachment means of the backpack 20 to the vehicle body frame is an example, and the attachment means is not limited to this, and other attachment means may be used, and the attachment structure is not limited to a fixed structure. For example, the fixing bolt 34 is useful for stabilizing the mounting structure, but is sufficient in strength without it. In this case, the time required to attach and detach the backpack 20 is shortened.

The operation of the first embodiment will be described.

When the bicycle is folded, the result is as shown in FIG. 4. The backpack 20 carries the folded bicycle 1, and the backpack 20 is self-supporting with the leg frame 21e as a support.

In this state, both arms are passed through the shoulder strap 23 of the backpack 20 and carried on its back as shown in FIG. At this time, the backpack 20 is directly fixed to the rear stay 12, the auxiliary stay 19, and the axle 14, so that the bicycle can be stably carried on the back without being loose. Further, the back of the person carrying the bicycle is in contact with the back support cloth 22, and the uneven portions such as the body frame of the folded bicycle do not directly contact the back, so that there is no discomfort on the back. Furthermore, the plane of symmetry O of the backpack 20
Since the backpack 20 is attached to the bicycle so that (shown in FIG. 2) coincides with the center of gravity of the folded bicycle 1, the bicycle is well-balanced when the backpack 20 is carried on the back, and the bicycle can be easily carried on the back. it can.

When the bicycle is assembled and run as shown in FIG. 1, the shoulder straps 23 are fixed to the both side frames 21a of the backpack 20 by appropriate means so that the shoulder straps 23 do not hang down. Good. The entire backpack 20 may be covered with a cover (not shown).

Next, a second embodiment will be described with reference to FIG.

In the second embodiment, the construction of the backpack 35 and the mounting structure of the backpack 35 to the bicycle body frame are different from those in the first embodiment. In the second embodiment, the lower frame is connected between the both side frames 36a formed by bending one metal pipe into a rectangular shape, and the lower frame is connected by a U-shape 36b to form a frame body 36. And the both side frames 36
The backrest cloth 22 is stretched between a and a shoulder strap 23 is attached between the connecting frame 36c at the upper part of the backpack and both side frames 36a.

A mounting bracket 37 is welded to the lower side frame 36a of the backpack 35 in FIG. 6, and the axle 14 of the rear wheel 13 is passed through the hole formed in the mounting bracket 37, and the fixing nut is attached to the axle 14. Screw into the threaded part of the
7 is fixed to the axle 14 of the rear wheel 13. Further, in FIG. 6, the upper side frame 36 a and the auxiliary frame 1 of the carrier 18
A portion 39 where 9 intersects is welded. Further, a supporting rod 40 is vertically provided on the front portion of the carrier 18, and the lower end of the supporting rod 40 is welded to the upper side frame 36a. Reference numerals 41a and 41b are locations where the vehicle body frame and the carrier 18 are fastened with bolts to fix the carrier 18. Then, the mounting bracket 37 and the bolts at the tightening points 41a and 41b are removed to remove the carrier 18 which is integrated with the backpack 35 so that repairs such as replacement of tires of the bicycle are not hindered.

With the backpack 35 of the second embodiment, the folded bicycle can be carried on a bad road such as a mountain road as in the first embodiment. The structure of the backpack and the structure for attaching the backpack to the bicycle are not limited to the embodiments. For example, an engaging member formed of a U-shaped spring material is attached to one side (for example, the backpack side) at a position where the backpack and the stay of the bicycle intersect (for example, a position at reference numeral 38 in FIG. 6), and the other (for example, a bicycle stay). May be grasped. With such a mounting structure, since bolts are not used, tools such as a spanner are unnecessary for mounting and dismounting the backpack.

The inventor created the prototypes of the first and second embodiments, carried out a test ride in Yamano, and carried the bicycle while carrying it on the way. As a result, it was very stable and easy to carry, and no trouble occurred during running.
The backpack 35 of the second embodiment has the following design specifications. The material of the frame body 35 is stainless steel φ =
Using a 13.8 m / m tube, all angles of each bend are 9
It was set to 0 ° (however, there is a slight R on the work). In addition, all joints of each part were welded. Frame body 36
The dimension in the longitudinal direction was about 550 m / m, and the dimension in the width direction was about 350 m / m. Frame body 3 configured in this way
The weight of No. 6 was about 850 g, and it could be kept within 1 kg including the shoulder rest and backrest. In addition, backpack 3
The 5 can be attached to bicycles of different sizes such as 20 inches and 27 inches.

[0032]

As described above, according to the present invention, the backpack fixed to the body frame of the folding bicycle allows the folded bicycle to be carried on a mountain road or a slope easily. In this way, the bicycle can be easily carried up to the hillside or the mountaintop, which has the excellent effect of further expanding the range of enjoying cycling.

[Brief description of the drawings]

FIG. 1 is a side view of a folding bicycle according to a first embodiment of the present invention when the bicycle is running.

FIG. 2 is a perspective view showing the backpack of FIG. 1 removed from a bicycle.

FIG. 3 is an exploded perspective view showing a structure for attaching a backpack to a bicycle frame.

FIG. 4 is a perspective view of the bicycle in a folded state.

FIG. 5 is a perspective view of the bicycle of FIG.

FIG. 6 is a partial side view of the folding bicycle according to the second embodiment.

[Explanation of symbols]

1 ... Folding bicycle, 2 ... 1st frame, 3 ... 2nd frame, 8 ... Front wheel, 9 ... 1st bending part, 10 ... 2nd bending part, 11 ... Rear frame, 12 ... Rear stay, 13
Rear wheel, 14 ... Axle, 20 ... Backpack, 21 ... Frame body, 22 ... Back cloth, 23 ... Shoulder strap, 24 ... Clamping metal fitting, 29 ... Clamping metal fitting, 35 ... Backpack, 36 ... Frame body.

 ─────────────────────────────────────────────────── ─── Continuation of front page (73) Patent holder 593079209 Hiroichiro Usui 15-2 Yotsuyaue-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa (72) Inventor Kazuu Aizawa 309-104, Kayajuku, Nakahara-ku, Kawasaki-shi, Kanagawa (72) Invention Person Susumu Miyazaki 3-25-1 Minami 3-chome, Ushiku City, Ibaraki Prefecture (72) Inventor Yoichi Takashima 4-22-31-202 Kamirenjaku, Mitaka City, Tokyo (72) Inventor Kiyotaka Sugisaki 3-109 Ishikawacho, Naka-ku, Yokohama-shi, Kanagawa Prefecture -8 (72) Inventor Hiroichiro Usui 15-2 Yotsuyagami-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa (56) Reference JP-A-57-151485 (JP, A) JP-A-50-76742 (JP, A) 60-165283 (JP, U)

Claims (2)

(57) [Claims] 1. A foldable bicycle in which a body frame is configured to be foldable via a connecting shaft, and a front wheel and a rear wheel can be folded via the connecting shaft so as to partially overlap with each other. A frame body of a backpack having a back rest and a shoulder strap is attached to the vehicle body frame, and the frame body is sandwiched by sandwiching metal fittings composed of a pair of detachable sandwiching members, and the sandwiching metal fittings are detachably attached to the body frame. A foldable bicycle with a backpack, wherein the frame body of the backpack has a leg frame that allows the folded bicycle to stand on its own. 2. The folding device with a backpack according to claim 1, wherein the backpack is attached to the body frame so that a left-right symmetry plane of the backpack and a center of gravity of the folded bicycle coincide with each other. bicycle.