JP5618668B2 - Bicycle folding structure - Google Patents

Description

The present invention provides a technique related to a bicycle, and particularly relates to a folding structure of a bicycle.

Increasingly, people are traveling and exercising using bicycles as the trend towards leisure is growing and holidays are increasing. However, the range of activity of the bicycle is limited by the physical strength of the user, and it is not possible to move over a long distance at high speed. Therefore, when traveling from point A to point B and traveling at point B by bicycle, it is generally necessary to first transport the bicycle from point A to point B using transportation such as trains, subways and cars. There is. However, the conventional bicycle has a large volume. Therefore, a folding bicycle was developed. However, when observing a conventional folding bicycle, the conventional folding bicycle is a small bicycle with a single rod-shaped frame, so it occupies less space after folding, but the ride comfort is poor In addition, since the folding fixing structure is complicated, it has been easily found that the folding operation is inconvenient.

Therefore, the user has sought a new structure with high practicality that can solve the problems existing in the above-described conventional folding bicycle. In addition, related companies have set a research goal to develop a new structure that can solve the problems existing in the conventional folding bicycle described above.

The inventor of the present invention has been engaged in the manufacture and development of related products for many years, added a new design to achieve the above-mentioned goal, and finally devised a highly practical invention.

Japanese Utility Model Publication No. 6-1171

Conventional bicycles have a large volume. Therefore, a folding bicycle was developed. However, when observing a conventional folding bicycle, the conventional folding bicycle is a small bicycle with a single rod-shaped frame, so it occupies less space after folding, but the ride comfort is poor In addition, since the folding fixing structure is complicated, it has been easily found that the folding operation is inconvenient. An object of the present invention is to provide a bicycle folding structure capable of solving the problems existing in the above-described conventional folding bicycle.

In order to solve the above problems, at least one toothed ring device is mainly used on the bicycle structure in the bicycle folding structure of the present invention. When the plurality of tooth portions of the toothed ring device are engaged with each other, the movable toothed ring can be pressed against the fixed toothed ring by the fixed unit. That is, when the movable toothed ring is engaged with the fixed toothed ring, the fixed unit is fixed to the seat pipe, so that the engaged state is not loosened and falls off. When the bicycle is folded, the movable toothed ring can be separated from the fixed toothed ring by loosening the fixing unit fixed to the seat pipe. When separated, fold the front triangular part of the frame to the rear triangular part by rotating the movable toothed ring fitted on the seat pipe and rotating the pipe fixed on the movable toothed ring Can do.
The present invention has the following features.
(1) A bicycle folding structure including at least one toothed ring device,
The toothed ring device comprises a fixed toothed ring, a movable toothed ring and a fixed unit;
When unfolding the folding structure of the bicycle, the fixed toothed ring and the movable toothed ring are engaged with each other, and then fixed by the fixing unit,
When folding the folding structure of the bicycle, after loosening the fixed unit, by rotating the movable toothed ring, the first pipe fixed to the movable toothed ring is rotated,
The first pipe is an upper pipe, a lower pipe, a handle stem or a handle;
The fixed toothed ring is fixed on the second pipe;
The movable toothed ring is movably fitted on the second pipe;
The fixed unit is disposed on the second pipe to which the movable toothed ring is fitted, and is used to fix the movable toothed ring;
The bicycle folding structure according to claim 1, wherein the second pipe is a fitting pipe on a seat pipe or a front fork pipe.
(2) The bicycle folding structure according to (1), wherein the fixing unit is a fastening member, an annular fastening member, or a quick release structure.
(3) The toothed ring device is used between the upper pipe and the seat pipe and between the lower pipe and the seat pipe, and a plurality of teeth of the toothed ring device mesh with each other. Is fixed by the fixing unit,
After separating the teeth, the movable toothed ring is rotated and the first pipe fixed on the movable toothed ring is rotated so that the front triangular portion of the frame becomes the rear triangular portion. Folded to
The tooth folding part is preferably trapezoidal, and the folding structure of the bicycle according to (1).
(4) The toothed ring device is used between the upper pipe and the upper seat pipe of the bottom bracket and between the lower pipe and the lower seat pipe of the bottom bracket. When the teeth are engaged with each other, they are fixed by the fixing unit,
After separating the teeth, the movable toothed ring is rotated and the first pipe fixed on the movable toothed ring is rotated so that the front triangular portion of the frame becomes the rear triangular portion. The bicycle folding structure according to (1), wherein the bicycle folding structure is folded to a maximum.
(5) The step of separating and rotating the toothed ring device, after loosening the fixing unit fixed to the second pipe, separating the movable toothed ring from the fixed toothed ring, The bicycle folding structure according to (1), wherein the structure is performed by rotating the ring with movable teeth fitted on the second pipe.
(6) The toothed ring device is used between a front fork pipe and the handle stem, rotates the movable toothed ring, and rotates the first pipe fixed on the movable toothed ring. (1) The bicycle folding structure according to (1), wherein the handle is folded.

The bicycle folding structure of the present invention can be applied to a large bicycle because the frame is applied to a bicycle having at least an upper pipe and a lower pipe. In addition, the folding structure of the bicycle according to the present invention mainly includes a toothed ring device between the upper pipe and the seat pipe and between the lower pipe and the seat pipe, or between the upper pipe and the bottom bracket. And between the lower pipe and the lower seat pipe of the bottom bracket. When the plurality of tooth portions of the toothed ring device are engaged with each other, the movable toothed ring can be pressed against the fixed toothed ring by the fixed unit. That is, when the movable toothed ring is engaged with the fixed toothed ring, the fixed unit is fixed to the seat pipe, so that the engaged state is not loosened and falls off. When the bicycle is folded, the movable toothed ring can be separated from the fixed toothed ring by loosening the fixing unit fixed to the seat pipe. When separated, rotate the movable toothed ring fitted on the seat pipe, rotate the pipe fixed on the movable toothed ring, and fold the front triangular part of the frame to the rear triangular part, Bicycle can be folded. That is, the folding structure of the bicycle according to the present invention is simple in structure, can be quickly folded, and can be firmly fixed during folding or unfolding without using a special engagement positioning structure. It can be carried out.

It is a disassembled perspective view which shows the toothed ring apparatus of the folding structure of the bicycle by one Embodiment of this invention. It is a side view which shows a mode that the front triangular part and the rear triangular part of the frame of the folding structure of the bicycle by one Embodiment of this invention were isolate | separated. It is a side view which shows a mode that the toothed ring apparatus was fixed after expand | deploying the bicycle of the folding structure of the bicycle by one Embodiment of this invention. It is a side view which shows the mode before separating the toothed ring apparatus of the folding structure of the bicycle by one Embodiment of this invention, and folding a bicycle. It is a side view which shows the mode after isolate | separating the toothed ring apparatus of the folding structure of the bicycle by one Embodiment of this invention, and folding the bicycle.

DESCRIPTION OF EMBODIMENTS Embodiments showing the objects, features and effects of the present invention will be described in detail with reference to the drawings. However, these descriptions do not limit the embodiments of the present invention.

Please refer to FIG. As can be seen from FIGS. 1 to 5, the folding structure of the bicycle according to the present embodiment mainly includes at least one toothed ring device 70 and 90 used on the bicycle structure. The toothed ring devices 70 and 90 are composed of fixed toothed rings 411, 421 and 91, movable toothed rings 21, 31 and 93 and fixed units 22, 32 and 94. By connecting, separating, and rotating the fixed toothed rings 411, 421, 91 and the movable toothed rings 21, 31, 93, the object of folding the bicycle is achieved.

Please refer to FIG. As shown in FIG. 1, the toothed ring devices 70 and 90 of the present embodiment are composed of fixed toothed rings 411 and 91, movable toothed rings 21 and 93, and fixed units 22 and 94. By connecting, separating and rotating the fixed toothed rings 411, 91 and the movable toothed rings 21, 93, the object of folding the bicycle is achieved.

Please refer to FIG. As shown in FIGS. 2 to 4, the toothed ring devices 70 and 90 (see FIG. 1) are provided between the upper pipe 11 and the upper seat pipe 40 a of the bottom bracket 61 and between the lower pipe 12 and the lower bracket 61. 40b and between the front fork pipe 96 and the handle stem 95. When the plurality of tooth portions 211, 311, 4111, 4211, 911 and 931 of the toothed ring devices 70 and 90 are engaged with each other, the fixing units 22, 32 and 94 are fitted to the seat pipe 40 or the fitting pipe on the front fork pipe. By fixing to 92, the meshing state will not loosen and fall off. FIG. 3 is a side view showing a state after the bicycle is unfolded and the fixed toothed rings 411, 421, 91 and the movable toothed rings 21, 31, 93 are engaged and fixed.

Please refer to FIG. By loosening the fixing units 22, 32, 94 fixed to the fitting pipe 92 on the seat pipe 40 or the front fork pipe, the movable toothed rings 21, 31, 93 are separated from the fixed toothed rings 411, 421, 91. Can be made. When the toothed ring device is separated and loose, the bicycle can be deployed.

Please refer to FIG. 4 and FIG. When the movable toothed rings 21, 31, 93 are separated, the movable toothed rings 21, 31, 93 are rotated, and the upper pipe 11, the lower pipe 12, and the handle fixed to the movable toothed rings 21, 31, 93 are handled. By rotating the stem 95, the bicycle can be folded.

Please refer to FIG. 1 and FIG. By loosening the fixing units 22, 32, 94 fixed to the fitting pipe 92 on the seat pipe 40 or the front fork pipe, the movable toothed rings 21, 31, 93 are separated from the fixed toothed rings 411, 421, 91. Can be made. When separated, the movable toothed rings 21, 31, 93 on the fitting pipe 92 on the seat pipe 40 or the front fork pipe can be rotated, so that they are fixed to the movable toothed rings 21, 31, 93. The upper pipe 11, the lower pipe 12, and the handle stem 95 can be rotated to fold the front triangular portion of the frame 10 to the rear triangular portion, and the handle 80 can also be folded.

Please refer to FIG. 2 and FIG. The tooth portions 211, 311, 4111, 4211, 911, and 931 are preferably trapezoidal.

In the folding structure of the bicycle according to the present invention, at least one toothed ring device is mainly used at a position where the bicycle is folded. The toothed ring device is disposed, for example, between the first pipe and the second pipe. The first pipe can be an upper pipe, a lower pipe, a handle stem or a handle. The second pipe can be a fitting pipe on the seat pipe or the front fork pipe. The toothed ring device includes a fixed toothed ring, a movable toothed ring and a fixed unit. The fixing unit can be a clamping member, an annular clamping member or a quick release structure.

The above-mentioned fixing unit is an annular fastening member and is fitted on the second pipe. The outer diameter of the second pipe has a conical column shape, and the inner diameter of the annular fastening member also has a conical column shape. Thereby, when the annular tightening member is tightened, the movable toothed ring is pressed against the fixed toothed ring, so that the meshing state of the movable toothed ring and the fixed toothed ring does not loosen and fall off.

The above-mentioned fixing unit is an annular fastening member and is fitted on the second pipe. A screw thread is provided on the outer diameter of the second pipe, and a screw thread is also provided on the inner diameter of the annular fastening member. Thus, by rotating the annular fastening member, the movable toothed ring is pressed against the fixed toothed ring, so that the meshing state of the movable toothed ring and the fixed toothed ring does not loosen and fall off.

The above description describes preferred embodiments that exhibit the technical features of the present invention. Those skilled in the art can make changes and modifications within the scope of the present invention, and these changes and modifications are included in the claims of the present invention.

10 frame 11 upper pipe 12 lower pipe 21 movable toothed ring 211 tooth part 22 fixing unit 31 movable toothed ring 311 tooth part 32 fixing unit 40 seat pipe 40a upper seat pipe 40b lower seat pipe 411 fixed toothed ring 4111 tooth part 421 Fixed toothed ring 4211 Tooth part 61 Bottom bracket 70 Toothed ring device 80 Handle 90 Toothed ring device 91 Fixed toothed ring 911 Toothed part 92 Fitting pipe on front fork pipe 93 Movable toothed ring 931 Toothed part 94 Fixed unit 95 Handle stem 96 Front fork pipe

Claims (6)

A folding structure for a bicycle including at least one toothed ring device,
The toothed ring device comprises a fixed toothed ring, a movable toothed ring and a fixed unit;
When unfolding the folding structure of the bicycle, the fixed toothed ring and the movable toothed ring are engaged with each other, and then fixed by the fixing unit,
When folding the folding structure of the bicycle, after loosening the fixed unit, by rotating the movable toothed ring, the first pipe fixed to the movable toothed ring is rotated,
The first pipe is an upper pipe, a lower pipe, a handle stem or a handle;
The fixed toothed ring is fixed on the second pipe;
The movable toothed ring is movably fitted on the second pipe;
The fixed unit is disposed on the second pipe to which the movable toothed ring is fitted, and is used to fix the movable toothed ring;
The bicycle folding structure according to claim 1, wherein the second pipe is a fitting pipe on a seat pipe or a front fork pipe.   The bicycle folding structure according to claim 1, wherein the fixing unit is a tightening member, an annular tightening member, or a quick release structure. The toothed ring device is used between the upper pipe and the seat pipe and between the lower pipe and the seat pipe, and when a plurality of teeth of the toothed ring device are engaged with each other Fixed by the fixing unit,
After separating the teeth, the movable toothed ring is rotated and the first pipe fixed on the movable toothed ring is rotated so that the front triangular portion of the frame becomes the rear triangular portion. Folded to
The bicycle folding structure according to claim 1, wherein the tooth portion is preferably trapezoidal. The toothed ring device is used between the upper pipe and the upper seat pipe of the bottom bracket and between the lower pipe and the lower seat pipe of the bottom bracket, and the plurality of teeth of the toothed ring device are When engaged with each other, fixed by the fixing unit,
After separating the teeth, the movable toothed ring is rotated and the first pipe fixed on the movable toothed ring is rotated so that the front triangular portion of the frame becomes the rear triangular portion. The bicycle folding structure according to claim 1, wherein the bicycle folding structure is folded to a maximum.   The step of separating and rotating the toothed ring device includes loosening the fixing unit fixed to the second pipe, and then separating the movable toothed ring from the fixed toothed ring, The bicycle folding structure according to claim 1, wherein the folding structure is performed by rotating the ring with movable teeth fitted on a pipe.   The toothed ring device is used between a front fork pipe and the handle stem, and rotates the movable toothed ring and rotates the first pipe fixed on the movable toothed ring. The bicycle folding structure according to claim 1, wherein the handle is folded.

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