JP2005008053A - Collapsible bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collapsible bicycle structured so that a stable bicycle frame is formed when one seats him/herself on its saddle 9 applying a vertical direction load, and when he/she gets off from the saddle 9, a main pipe 6 is made collapsible relative to a head pipe 1 to allow the bicycle frame to be assembled and/or folded up simply. <P>SOLUTION: The collapsible bicycle is structured so that a slide pipe 5 installed parallel with the head pipe 1 is inserted through a cylinder 10, a mounting member 12 is installed on the side of the cylinder 10, the forefront of the main pipe 6 installed in the specified place and fitted with the saddle 9 through a pipe 8 is pivoted on the mounting member 12, and that a hook piece 13 to be in engagement removably is installed between the main pipe 6 and the cylinder 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a folding bicycle that can be easily assembled and folded.
[0002]
[Prior art]
Conventional folding bicycle frames are constructed by interposing clamps between the two frames to be folded. When assembling, tighten the clamps with a tool and fix both frames, and use a tool when folding. Then, tighten the clamps and fold both frames.
[0003]
[Problems to be solved by the invention]
However, since the tightening bracket is tightened and the tightening is released using a tool, there are problems such as complicated assembly and folding operations.
[0004]
In addition, the structure of the fastening hardware is complicated, and there are problems such as an increase in manufacturing cost.
[0005]
Therefore, an object of the present invention is to provide a bicycle that can be easily assembled and folded without using a special tool.
[0006]
[Means for Solving the Problems]
In view of the above circumstances, the present invention allows a head pipe or a slide pipe arranged in parallel to the head pipe to be inserted into the cylinder, and an attachment member is provided on a side portion of the cylinder, and the attachment member is erected at a predetermined position. The present invention proposes a folding bicycle in which a tip of a main pipe provided with a saddle is pivotally attached via a pipe, and a hook piece that can be engaged and disengaged is provided between the main pipe and the cylinder.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The principle of the present invention will be described with reference to FIG. 2. A triangular shape is formed between the main pipe 6 and the cylinder 10 via a hook piece 13, and in the state where no load is applied to the saddle 9, the cylinder is Can be moved up and down along the slide pipe 5 inserted into the saddle 9, but when a vertical load P is applied to the saddle 9, a load P1 is applied to the main pipe 6 due to this load, and the cylinder 10 is inserted. Additional forces P2 and P3 in opposite directions are applied to the slide pipe 5, whereby the cylinder 10 is stopped at a predetermined position on the slide pipe 5 to be inserted, and a hook piece 13 is interposed between the main pipe 6 and the cylinder 10. And a stable frame is formed.
[0008]
That is, in the present invention, when a vertical load is applied while sitting on the saddle 9, the cylindrical body 10 is fixed at a predetermined position of the slide pipe 5 inserted through the saddle 9, and a stable bicycle frame is formed. When the load applied to the cylinder 10 is released, the cylinder 10 moves up and down, and when the hook piece is further removed from the main pipe or cylinder, the main pipe is pivotally attached to the attachment member of the cylinder so that the bicycle frame is attached. Can be folded easily.
[0009]
In the bicycle according to the present invention, a head pipe or a slide pipe arranged in parallel with the head pipe is inserted into the cylinder, and an attachment member is provided on a side portion of the cylinder, and the standing pipe is provided at a predetermined position on the attachment member. The tip of the main pipe provided with a saddle may be pivotally attached to the mounting member, and the fixing member may be provided with a fixing member for supporting the main pipe at a predetermined angle with respect to the cylindrical body.
[0010]
That is, in this case, instead of interposing a hook piece between the main pipe and the cylinder, the mounting member is provided with a fixing member such as a fixing screw for supporting the main pipe at a predetermined angle with respect to the cylinder. In this case as well, when the seat is seated on the saddle and a vertical load is applied in the same manner as described above, the cylinder is fixed at a predetermined position of the head pipe or slide pipe inserted therethrough to form a stable bicycle frame. Is done.
[0011]
Also, by releasing the load applied to the saddle, the cylinder moves up and down, and if the fixing member is further removed, the main pipe is pivotally attached to the mounting member of the cylinder so that the bicycle frame can be folded easily. Can do.
[0012]
In addition, if an auxiliary fixing screw is provided between the cylinder and the head pipe or slide pipe inserted through the cylinder, the cylinder is stopped at any position of the head pipe or slide pipe inserted through the cylinder. Therefore, a bicycle frame that is convenient for the rider can be obtained.
[0013]
Further, since the additional forces P2 and P3 are applied around the screw shaft of the auxiliary fixing screw, the cylindrical body can be reliably fixed to a head pipe or a slide pipe that is inserted therethrough.
[0014]
Furthermore, the scope of application of the present invention includes various bicycles such as tricycles, adult bicycles, nursing bicycles, and transport bicycles.
[0015]
【Example】
Hereinafter, the present invention will be described with reference to the illustrated embodiment. FIG. 1 shows an example in which the present invention is applied to a tricycle. 1 has a handle post 2 at the upper end and a driving petal for the front wheel 3 at the lower end. 4. A head pipe having 4, 5 is a slide pipe arranged in parallel with the head pipe 1, 6 has a rear wheel 7 at its rear end, and a main pipe provided with a saddle 9 through a standing pipe 8 at the upper part thereof. Reference numeral 10 denotes a cylinder inserted through the slide pipe 5 so as to be movable up and down, and 11 denotes an auxiliary fixing screw provided in the cylinder 10.
[0016]
An attachment member 12 is provided on the upper portion of the cylinder 10, and a distal end portion of the main pipe 6 is pivotally attached to the attachment member 12. A base end of a hook piece 13 is provided on the lower portion of the cylinder 10. On the other hand, a locking member 14 for the hook piece 13 is provided on the lower side of the main pipe 6.
[0017]
In the above configuration, when the front end portion of the hook piece 13 is locked by the locking tool 14 provided on the lower side portion of the main pipe 6, the hook piece 13 is interposed between the main pipe 6 and the cylindrical body 10. In a state where a triangular shape is formed and no load is applied to the saddle 9, the cylinder 10 can move up and down along the slide pipe 9, but when an infant or the like sits on the saddle 9 and a vertical load is applied, As described above, an additional force in the opposite direction is applied to the slide pipe 9 inserted through the cylinder 10, whereby the cylinder 10 can be stopped at a predetermined position of the slide pipe 9 and can be used for play by an infant or the like. A stable tricycle-shaped frame is formed.
[0018]
When the infant or the like gets off the saddle 9 and no load is applied to the saddle 9, the cylinder 10 moves up and down along the slide pipe 9, and the hook piece 13 is further removed from the locking tool 14 of the main pipe 6. The tip of the pipe 6 can be rotated with respect to the mounting member 12, so that the main pipe 6 can be folded close to the head pipe 1 as shown in FIG. 3, and the tricycle frame can be folded as shown in FIG. Further, the main pipe 6 can be unfolded with respect to the head pipe 1 and folded.
[0019]
Further, in this embodiment, since the auxiliary fixing screw 11 is provided in the cylinder body 10, the cylinder body 10 can be stopped at any position of the slide pipe 9. Therefore, as shown in FIG. It is also possible to fix the cylindrical body 10 so that 9 is at a high position, as shown in FIG.
The cylindrical body 10 can be fixed so that the saddle 9 is at a low position as shown in FIG.
[0020]
In FIG. 6, instead of interposing the hook piece 13 between the main pipe 6 and the cylinder 10, a fixing screw 15 is provided on the mounting member 12 to support the main pipe 6 and the cylinder 10 at a predetermined angle. An embodiment as described above is shown.
[0021]
Furthermore, the present invention is not limited to tricycles and can be applied to various bicycles such as adult bicycles, nursing bicycles, and transport bicycles.
[0022]
FIG. 7 shows an example applied to an adult bicycle. The cylinder 10 is inserted through the head pipe 1 and the other parts are the same as those applied to the tricycle shown in FIG. The description is omitted.
[0023]
In this case, when the rider sits on the saddle 9 by engaging the hook piece 13 of the cylinder 10 with the locking tool 14 of the main pipe 6, as described above, an additional force in the opposite direction from the head pipe 1 is applied to the cylinder 10. In addition, the cylinder 10 is stopped at a predetermined position of the head pipe 1, and a stable bicycle-shaped frame is formed between the main pipe 6 and the cylinder 10 via a hook piece 13 (FIG. 7 ( a)).
[0024]
When the tip end portion of the hook piece 13 is removed from the locking tool 14, the cylinder 10 can move up and down the head pipe 1 when descending from the saddle 9, so that the main pipe 6 is folded close to the head pipe 1 (FIG. 7). (See (b)).
[0025]
FIG. 8 shows an improved example of FIG. 7, in which the main pipe 6 is composed of a front pipe 6b and a rear pipe 6c connected via a hinge part 6a, and a locking tool 14 is attached to the rear pipe 6c. When the rider sits on the saddle 9 by engaging the tip of the hook piece 13, a stable bicycle frame is formed (see FIG. 8A).
[0026]
When the tip of the hook piece 13 is removed from the locking tool 14, the cylinder 10 can move up and down the head pipe 1 when it descends from the saddle 9, so that the main pipe 6 is folded close to the head pipe 1. In this case, the front pipe 6b and the rear pipe 6c are folded via the bent portion 6a, so that the front wheel 3 and the rear wheel 7 can be folded closer (see FIG. 8B).
[0027]
9 and 10 show an example applied to a transport bicycle. In this case, a loading platform 17 having wheels 16,... Is provided at the lower end of the head pipe 1 having a handle post 2 at the upper end, and the head pipe. 1 is the same as the above embodiment except that the cylindrical body 10 is inserted, and therefore, the same reference numerals are given and description of the configuration is omitted.
[0028]
Similar to the above embodiment, when the rider sits on the saddle 9 with the hook piece 13 of the cylindrical body 10 engaged with the locking member 14 of the main pipe 6, a stable bicycle frame for transportation is formed (see FIG. 9). ).
[0029]
When the tip of the hook piece 13 is removed from the locking tool 14, the cylinder 10 can move up and down the head pipe 1 when it descends from the saddle 9, so that the main pipe 6 is folded with respect to the head pipe 1 (FIG. 10). reference)).
[0030]
【The invention's effect】
In short, in the present invention, a stable bicycle frame is formed when a vertical load is applied while sitting on the saddle, and the main pipe can be folded with respect to the head pipe when descending from the saddle. Can be easily assembled or folded.
[Brief description of the drawings]
FIG. 1 is a side view of the present invention applied to a tricycle. FIG. 2 is a diagram for explaining the principle of the present invention based on the above embodiment. FIG. 3 is a side view showing an example of a folded state in the embodiment of FIG. FIG. 5 is a side view showing another example of the folded state in the embodiment of FIG. 1. FIG. 5 is a side view showing an example of use of an auxiliary fixing screw, in which (a) is an example in which a saddle is fixed at a high position; FIG. 6B is a view showing an example in which the saddle is fixed at a low position. FIG. 6 is a perspective view showing another example of supporting the gap between the main pipe and the cylindrical body at a predetermined angle. FIG. 8A is a side view applied to a bicycle for use with a bicycle, and FIG. 8A is a view showing a state where a stable bicycle frame is formed by sitting on a saddle, and FIG. 8B is a view showing a folded state. For example, (a) is a seat that sits on a saddle to form a stable bicycle frame. FIG. 9B is a diagram showing the folded state. FIG. 9 is a side view applied to the carrying bicycle. FIG. 10 is a diagram showing the folded state in the embodiment. ]
1 is a head pipe 2 is a handle post 3 is a front wheel 4 is a driving petal 5 is a slide pipe 6 is a main pipe 6a is a hinged part 6b is a front pipe 6c is a rear pipe 7 is a rear wheel 8 is a vertical pipe 9 is a saddle 10 is a cylinder The body 11 is the auxiliary fixing screw 12, the mounting member 13, the hook piece 14, the locking tool 15 is the fixing screw 16,.

Claims (4)

A main pipe having a head pipe or a slide pipe arranged in parallel with the head pipe is inserted into the cylinder, and an attachment member is provided on a side portion of the cylinder, and a saddle is provided on the attachment member via a standing pipe at a predetermined position. A folding bicycle characterized in that the end of a pipe is pivotally attached, and a hook piece that can be engaged and disengaged is provided between the main pipe and the cylinder. A main pipe having a head pipe or a slide pipe arranged in parallel with the head pipe is inserted into the cylinder, and an attachment member is provided on a side portion of the cylinder, and a saddle is provided on the attachment member via a standing pipe at a predetermined position. A folding bicycle characterized in that a pipe end is pivotally attached and a fixing member for supporting the main pipe at a predetermined angle with respect to the cylindrical body is provided on the mounting member. The folding bicycle according to claim 1 or 2, wherein an auxiliary fixing screw is provided between the cylinder and a head pipe or a slide pipe inserted therethrough. The folding bicycle according to claim 1 or 2, which is a tricycle, an adult bicycle, a care bicycle, or a transport bicycle.

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