JP3100460U - Foldable bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be able to perform simple and quick folding work in addition to being a rotary type.
SOLUTION: The front and rear body frames extend in vertical planes whose main bodies are shifted to the left and right and extend in different front and rear directions, and are pivotally connected to each other so as to be rotatable. A stop rod that is pivoted to the upper side of the rear body frame so that it can be folded forward and fall down, and between the front and rear body frames, for stopping relative rotation of the front and rear body frames when using a bicycle. A first link is detachably mounted between the seat tube and the front body frame for maintaining the seat tube in a legitimate standing position during use of the bicycle. It is installed in pivotal contact with the body frame.
[Selection diagram] Fig. 1

Description

(4) The present invention relates to a bicycle, particularly to a foldable bicycle.

2. Description of the Related Art Conventionally, a so-called deployable fold that has both front and rear body frames each having a front and rear wheel on a lower side, and the front and rear body frames can be folded in the left and right direction until the front and rear wheels are arranged side by side. Possible bicycles are known. However, in such a foldable bicycle, it is difficult to attach a shock absorber to the body frame because the entire body frame is divided into two stages from a substantially central position.

In addition, there is a foldable bicycle called a rotary type. In this type of foldable bicycle, a shock absorber can be attached to the body frame, but the front and rear body frames are in the same vertical plane, and are rotated and folded on the same vertical plane with each other. When the bicycle is folded compactly, it is necessary to remove one of the front and rear wheels from the bicycle in advance, otherwise the front and rear wheels will not be able to be folded properly because they will not interfere with each other. And it takes time and effort.

In view of the above, it is an object of the present invention to provide a foldable bicycle which is of a rotary type and can be easily and quickly folded.

In order to achieve the above object, the present invention relates to a bicycle having front and rear body frames each having a front and rear wheel on a lower side, and having a seat tube rising from above the rear body frame. The body frame extends left and right on a vertical plane whose main body is shifted from side to side and extends in different front-to-rear directions, and is pivotally connected to each other so that it can rotate on the corresponding vertical plane, The seat tube is pivoted on the upper side of the rear body frame so that the seat tube can be folded down in a forward direction of the bicycle and fall between the front and rear body frames. A stop rod for stopping the relative rotation of the body frame is detachably attached, and a bicycle is provided between the seat tube and the front body frame. Collapsible first links for maintaining the seat tube in a legitimate standing position during use, the first link being pivotally mounted at each end to the seat tube and the front body frame, respectively. Provide bicycles.

The foldable bicycle of the present invention configured as described above is of a rotary type, but the front and rear body frames extend right and left in a vertical plane in which the main bodies extend in different front and rear directions which are shifted from each other. Therefore, when only the stop bar is removed, the front and rear body frames are folded in a downward direction until the front and rear wheels are arranged side by side, and at the same time, the first link is connected to the front body frame and the front link. The seat tube is rotated rearward with the pivot point thereof as a base axis, and the seat tube is rotated forward with the pivot point of the seat and the first link as a base axis, and the entire bicycle is folded until the front and rear wheels are horizontally aligned. It becomes compact and does not require both front and rear wheels to be removed, shortening the time for folding work, and making the folding work quick and easy.

Hereinafter, an embodiment of the foldable bicycle of the present invention will be described with reference to the drawings. As shown in FIG. 1, the foldable bicycle according to the present embodiment includes front and rear body frames 3 and 2 having front and rear wheels 34 and 23 on the lower side, respectively, and a seat rising from above the rear body frame 2. And a tube 1.

The seat tube 1 is pivotally mounted on the upper side of the rear body frame 2 so that the seat tube 1 can be folded down in the forward direction of the bicycle and fall down. At the lower end of the seat tube 1, after the entire bicycle is folded, a stand 14 projects in a triangular shape with the front and rear wheels 34, 23 which are arranged side by side to support the entire bicycle on a plane (FIG. 7). And below).

As shown in FIG. 2, the front and rear vehicle body frames 3 and 2 respectively extend on different vertical planes extending in different front and rear directions in which main bodies except for their pivotal portions are displaced from each other. It is pivoted back and forth so that it can rotate on a vertical plane.

The front body frame 3 includes a down tube 31 having a rear end 311 pivotally connected to the rear body frame 2, a front end 312 rising gradually forward from the rear end 311, It has a head tube 32 pivotally provided at a front end 312 and a front fork 33 held by the head tube 32 and supporting the front wheel 34.

The rear body frame 2 has a standing tube 20 having a lower end 201 pivotally connected to a rear end 311 of the down tube 31, an upper end 202 rising gradually from the lower end 201, and one end 211 of the standing tube 20. The rear fork 21 is fixed to the upper end 202 of the tube 20, and the other end 212 is branched to support the rear wheel 23. One end 221 is fixed to the other end 212 of the rear fork 21, Has a chain stay 22 fixed to the standing tube 20.

止 め Further, between the front and rear body frames 3 and 2, a stopper rod 42 for stopping the relative rotation of the front and rear body frames 3 and 2 when the bicycle is used is detachably attached. In the present embodiment, a cylinder type shock absorber is used as the stopper rod 42. In this manner, when riding a bicycle, the impact from the ground can be buffered by the stopper rod 42.

Between the seat tube 1 and the front vehicle body frame 3, first links 41 for maintaining the seat tube 1 in a legitimate standing position when using a bicycle are provided at both ends thereof with the seat tube 1 and the first link 41, respectively. It is installed so as to pivotally contact the front body frame 3.

The first pivot lug 13 protrudes near the upper end (202) of the standing tube 20. A second pivot lug 44 protrudes near the lower end of the seat tube 1. The second pivot lug 44 is pivotally supported by the first pivot lug 13 so as to be able to rotate back and forth.

Further, a third pivoting lug 16 protrudes near the upper end of the seat tube 1. A connection seat 35 is provided on the down tube (31). The connection seat 35 includes two lugs (351) that are symmetrically opposed to each other.

The first link 41 is a tubular body having both ends, one end of which is pivotally supported by the third pivot lug 16 and the other end of which is pivotally supported between the two lugs 351.

Further, as shown in FIG. 3, a pair of cutouts 352 opening toward the standing tube 31 are formed in the two lugs 351 respectively. The stopper rod 42 has one end 421 pivotally supported by the first pivot lug 13, and the other end 422 detachably attached to the pair of cutouts 352 via a quick release lock 43.

The quick release lock 43 is formed at one end of the pivot 431 and a pivot 431 that movably penetrates the other end 422 of the stopper rod 42 and is bridged between the pair of cutouts 352 near both ends. A first stop block 432 positioned outside the pair of cutouts 352, and a second stop block 432 movably mounted near the other end of the pivot 431 and positioned outside the pair of cutouts 352. And the eccentric head 435 is fixed to the other end of the pivot 431. When the eccentric head 435 is rotated, the eccentric head 435 presses the second stop block 433. While pulling out the pivot 431, the pressing lever 434 for operating the first and second stopper blocks 432 and 433 so as to sandwich the second lug 352 from the outside is used. To.

The head tube 32 is provided with two upper and lower lugs 36, 37. A second link 45 is provided between the head tube 32 and the down tube 31 for maintaining the head tube 32 in a proper standing position when using the bicycle. When FIG. 4 is combined with FIG. 1, one end 451 of the second link 45 is pivotally supported by the upper lug 36, and the other end 452 is inserted between the two lugs 351 of the connection seat 35. It is connected to the first link 41. A blocking block 353 is provided inside each of the two lugs 351 of the connection seat 35. The other end 452 of the second link 45 is provided with a pad 46 that is blocked by the blocking block 353 and restricts the movement of the second link 45 to the connection seat 35.

When the bicycle is to be folded, first, as shown in FIG. 5, the holding lever 434 is rotated in the release direction (see the embodiment of FIG. 3), and the first and second stopper blocks 432 and 432 are rotated. By loosening the pinch 433 between the two lugs 351, the lock by the quick release lock 43 is released, and the other end 422 of the stop rod 42 can be removed from the connection seat 35. In this case, as shown in FIG. 6, the first link 41 is connected to the front vehicle body by a pivot structure of the first link 41, the second pivot lug 44, and the second link 45. The seat tube 1 is pivoted rearward with the pivot point at which the frame 3 is pivotally connected, and the seat tube 1 is pivoted forward with the pivot point at which the first link 41 pivots. At this time, the length of the seat tube 1 is limited to the length of the first link 41, and the seat tube 1 is pivoted to near the rear end 311 of the down tube 31, and at the same time, the first link 41 is connected to the second link 41. By pressing the head tube 32 toward the head tube 32 while sliding the head tube 32 into the connection seat 35, the head tube 32 is rotated in the backward direction until the front and rear wheels 34, 23 are arranged side by side as shown in FIG. Move. As shown in FIG. 2, in the present embodiment, the lower end 201 of the standing tube 20, the connection seat 35, the upper and lower lugs 36 and 37, the first pivot lug 13, and the third pivot lug 16. Are separated from the center planes extending in the front-rear direction along the front body frame by approximately 7 degrees. For this reason, the seat tube 1, the front body frame 3, the first link 41, the stop bar 42, the second pivot lug 44, and the second link 45 are connected to the lower end 201 of the standing tube 20, The connection seat 35, the upper and lower lugs 36 and 37, the first pivot lug 13, and the third pivot lug 16 are connected to each other along the center plane. The front body frame 3, the first link 41, the stop rod 42, the second pivot lug 44, and the second link 45 are gradually separated from the center plane by an angle of 7 degrees, and the rear body It does not interfere with the frame 2 and the standing tube 20. In this way, the bicycle can be folded compactly.

Also, as shown in FIG. 7, after the entire bicycle is folded, the stand 14 becomes triangular with the front and rear wheels 34, 23 which are arranged side by side to support the entire bicycle on a plane, so that the entire bicycle can be stored. Make it convenient. In addition, the front and rear wheels 34 and 23 arranged in parallel on the left and right sides may be tightened by a clasp (not shown) for convenience in carrying.

Further, when the other end 422 of the stop rod 42 is hung from the down tube 31 by the wire 5 and the other end 422 is detached from the down tube 31, the swing of the stop rod 42 is avoided. Can be.

As described above, the foldable bicycle of the present embodiment is a rotary type, but the front and rear body frames 3 and 2 extend in different vertical planes whose main bodies are respectively extended in the front and rear directions which are shifted from each other. When only the stop rod 42 is removed, both the front and rear body frames 3 and 2 are folded in a downward direction until the front and rear wheels 34 and 23 are arranged side by side at the same time. The seat tube 1 is pivoted rearward with the pivot point of the front body frame 3 as a base axis, and the seat tube 1 is pivoted forward with the pivot point of the first link 41 as a base axis. The folding work can be made compact by folding the left and right sides 34 and 23 side by side, and the front and rear wheels 34 and 23 do not need to be removed. This shortens the time required for the folding work and makes the folding work quick and easy. It can be done to.

As described above, according to the present invention, it is possible to provide a foldable bicycle that is of a rotary type and can be easily and quickly folded.

1 is a side view showing an embodiment of a foldable bicycle according to the present invention. The top view which shows the said embodiment. FIG. 4 is a perspective view showing a configuration in which the stopper bar in the embodiment is attached to a connection seat via a quick release lock. FIG. 3 is a perspective view showing a connection configuration of a first link and a second link in the embodiment. Explanatory drawing which shows the operation | movement which the said embodiment is folded. Explanatory drawing which shows the operation | movement which the said embodiment is folded. Explanatory drawing which shows the state after the said embodiment is folded.

Explanation of reference numerals

REFERENCE SIGNS LIST 1 seat tube 13 first pivot lug 14 stand 16 third pivot lug 2 rear body frame 20 standing tube 201 lower end 202 upper end 21 rear fork 211 one end 212 other end 22 chain stay 221 one end 222 other end 23 rear wheel 3 Front body frame 31 Down tube 311 Rear end 312 Front end 32 Head tube 33 Front fork 34 Front wheel 35 Connection seat 351 Lug 352 Notch 353 Blocking block 36 Upper lug 37 Lower lug 41 First link 42 Stop rod 421 One end 422 Other end 43 Quick Release lock 431 Axis 432 First stop block 433 Second stop block 434 Press lever 435 Eccentric head 44 Second pivot lug 45 Second link 451 One end 452 Other end 46 Pad 5 Wire

Claims (9)

In a bicycle having front and rear body frames each having front and rear wheels on a lower side, and a seat tube of which is raised from above the rear body frame,
The front and rear body frames extend right and left of a vertical plane extending in different front and rear directions in which main bodies thereof are displaced from each other, and are pivotally connected to each other so as to be rotatable on the corresponding vertical plane. Yes,
The seat tube is pivoted on the upper side of the rear body frame so that the seat tube can be folded forward and fall down.
Further, between the front and rear body frames, a stopper bar for stopping the relative rotation of the front and rear body frames during use of the bicycle is detachably attached,
Between the seat tube and the front body frame, a first link for maintaining the seat tube in a legitimate standing position during use of the bicycle is provided at both ends thereof with the seat tube and the front body frame, respectively. It is installed pivotally,
Thereby, when the stopper bar is removed, both the front and rear body frames are folded in a downward direction until the front and rear wheels are arranged side by side, and at the same time, the first link is pivoted between the front link and the front body frame. A foldable bicycle, wherein the whole bicycle can be compactly folded by rotating the seat tube rearward with the contact point as a base axis and forward with the pivot point of connection between the seat tube and the first link as a base axis. . The foldable bicycle according to claim 1, wherein a cylinder-type shock absorber is used as the stop rod. The front body frame has a down tube having a rear end pivotally contacting the rear body frame, and a front end rising gradually forward from the rear end,
The rear body frame includes a standing tube having a lower end pivotally connected to a rear end of the down tube, an upper end rising gradually rearward from the lower end, and one end fixed to an upper end of the standing tube. A rear fork having an end branched to support the rear wheel, and a chain stay having one end fixed to the other end of the rear fork and the other end fixed to the standing tube. The foldable bicycle according to claim 1. A first pivot lug protruding near an upper end of the standing tube;
A second pivot lug protrudes near the lower end of the seat tube,
The foldable bicycle according to claim 3, wherein the second pivot lug is pivotally supported by the first pivot lug so as to be able to rotate back and forth. A third pivot lug protrudes near the upper end of the seat tube,
A connection seat is provided on the down tube,
The coupling seat has two symmetrically opposed lugs,
The first link is a tubular body having both ends, one end of which is pivotally supported by the third pivot lug, and the other end of which is pivotally supported between the two lugs. 3. The foldable bicycle according to 3. A pair of cutouts are formed in the two lugs, each opening toward the standing tube,
The stopper bar has one end pivotally supported by the first pivot lug and the other end detachably attached to the pair of notches via a quick release lock.
The quick release lock includes a pivot pivotally penetrating the other end of the stopper bar movably through the pair of notches near both ends thereof, and a pivot formed at one end of the pivot to form the pair of notches. A first stop block located outside, a second stop block movably mounted near the other end of the pivot and located outside the pair of notches, and an eccentric head; And the eccentric head is pivotally fixed to the other end of the pivot. When the eccentric head is rotated, the eccentric head pulls out the pivot while pressing the second block, and the first and second stop blocks are moved. 6. The foldable bicycle according to claim 5, further comprising a holding lever that operates to hold the second lug from outside. The front body frame further includes a head tube pivotally provided at a front end of the down tube, and a front fork held by the head tube and supporting the front wheel,
The head tube is provided with two upper and lower lugs,
A second link is provided between the head tube and the down tube for maintaining the head tube in a legitimate standing position during use of the bicycle,
The one end of the second link is pivotally supported by the upper lug, and the other end is inserted between two lugs of the connection seat and then connected to the first link. The foldable bicycle described in. A blocking block is provided inside each of the two lugs of the connection seat,
The folding device according to claim 7, wherein a pad is provided at the other end of the second link, the pad being blocked by the blocking block to limit the movement of the second link to the connection seat. Possible bike. 4. A stand which protrudes from a lower end of the seat tube and becomes triangular with front and rear wheels arranged side by side after the entire bicycle is folded to support the entire bicycle on a plane. The foldable bicycle described in.

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