JPH0723352Y2 - bicycle - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This invention is a simple and easy-to-use tool without using any tool within the necessary length so that it can be easily accommodated in the rear part of a wagon or the trunk of a passenger car when carrying a bicycle. It relates to a compact bicycle.

[0002]

2. Description of the Related Art Conventionally, as a compact bicycle, a foldable bicycle in which a main pipe is provided with a folding portion so that the frame can be folded laterally, or front and rear wheels and a handle are attached from the frame body. There are known wheeled vehicles and the like that can be easily removed.

[0003]

[Problems to be solved by the invention] However, although the folding type bicycle is compact, since the main pipe has a folding portion, the strength of the frame is reduced and the folding mechanism is complicated. However, there is a problem that a special tool is required for fixing, etc., and further, in the folded state, the thickness increases to take up a space. On the other hand, a wheeled vehicle has a drawback that a special tool is required for assembling and disassembling the bicycle, and that it takes a long time to assemble and disassemble.

[0004]

In order to solve the above problems, according to the present invention, an inner pipe having a predetermined length is inserted into the head pipe and is connected to the head pipe through a head rotating accessory. Then, insert a hawk stem containing a handle post inside the inner pipe,
The lower end of the hawk stem and the upper end of the hawk shoulder are connected by a hinge part in one direction, and a hawk stopper for restricting the upward movement of the head pipe or the inner pipe is attached to the upper end of the hawk stem. It is a proposal for a bicycle to do.

[0005]

[Function] With the above structure, the hawk stem is fixed by the hawk stopper at the time of use, the hinge portion connecting the lower end of the hawk stem and the upper end of the hawk shoulder is inside the inner pipe, and the hawk stem and the hawk shoulder are folded. It cannot be bent.

On the other hand, when the bicycle is made compact when it is transported, the hawk stopper is loosened to release the upward regulation of the head pipe or inner pipe, and the steering wheel and the front wheel are reversed.

Next, when the frame is pulled up, the hinge portion is moved to the outside of the inner pipe.

Accordingly, the bicycle is made compact by bending the hawk shoulder with respect to the hawk stem through the hinge portion and pulling the front wheels toward the rear wheels.

Therefore, according to the present invention, the bicycle can be easily made compact without using a special tool, and since the frame portion is not bent unlike a folding bicycle, the strength of the bicycle is not impaired.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 shows an essential part of the present invention, wherein 1 is a bicycle head pipe, and 2 and 3 are an upper pipe and a lower pipe fixed to the head pipe 1.

An inner pipe 5 having a predetermined length is inserted into the head pipe 1 via head rotating small articles 4, ... Provided at the upper end and the lower end.

A hawk stem 6 is inserted into the inner pipe 5, and the lower end portion of the hawk stem 6 and the upper end portion of the hawk shoulder 7 are joined by a unidirectional hinge portion 8, and the hinge portion 8 is used when a bicycle is used. Is located inside the inner pipe 5.

A handle post 11 having a pull-up thin wall 10 screwed to a pull-up rod 9 at its lower end is inserted into the hawk stem 6.

On the other hand, a screw groove 12 is provided on the outer periphery of the upper part of the hawk stem 6, and a hawk stopper 13 having a guide piece 13a at its lower end is attached to the screw groove 12, and the head pipes 1 to 1 are provided at the lower end of the guide piece 13a. The upward movement of the inner pipe 5 is restricted.

In the above structure, when the bicycle is used, the hawk stopper 13 is mounted in the screw groove 12, the lower end of the guide piece 13a regulates the upward movement of the inner pipe 5, and the hinge portion 8 is Since it is inside the inner pipe 5, the hawk stem 6 and the hawk shoulder 7 cannot be bent.

Next, the order of compacting will be described with reference to FIG. 2. First, the attachment of the hawk stopper 13 to the screw groove 12 is loosened, and the head pipe 1 to the inner pipe 5 are inserted.
The upper limit is lifted and the steering wheel and front wheel are reversed (Fig. 2a).

Next, when the frame of the bicycle such as the head pipe 1, the upper pipe 2 and the lower pipe 3 is pulled up, the inner pipe 5 connected to the head pipe 1 through the head rotating small articles 4, ... Is pulled up accordingly. The hinge portion 8 is disengaged from the lower end portion of the inner pipe 5 (Fig. 2b).

Therefore, the bicycle can be made compact by bending the hawk shoulder 7 with respect to the hawk stem 6 via the hinge portion 8 and pulling the front wheels toward the rear wheels (FIG. 2c).

As a result, the front wheel and the rear wheel of the bicycle are brought as close as possible to each other to make the bicycle compact, and since the bicycle is not as thick as the conventional folding, the trunk of a rear carrier or a passenger car of a wagon vehicle or the like. It can be efficiently stored in such a small space.

Also, by simply changing the hinge part 8, the inner pipe 5, and the hawk stopper 13, general general-purpose products can be used for the frame, so that the frame can be manufactured at extremely low cost, and since the frame is not divided, the strength of the bicycle is improved. It is not damaged.

[0021]

[Effects of the Invention] In summary, according to the present invention, it is possible to make a compact body without using a special tool and without impairing the strength of the bicycle, and in a rear carrier of a wagon car or a trunk of a passenger car. Can be accommodated efficiently.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a main part of a bicycle showing an embodiment of the present invention.

FIG. 2 is a view showing a sequence of compacting a bicycle according to the present invention, FIG. 2a showing a state in which a steering wheel and a front wheel are inverted, and FIG. 2b showing a state in which a frame is pulled up;
FIG. 2c is a diagram showing a state in which the front wheels are pulled to the rear wheels.

[Explanation of symbols]

 1 is a bicycle head pipe 2 and 3 is an upper pipe and a lower pipe 4, ... is a head rotating accessory 5 is an inner pipe 6 is a hawk stem 7 is a hawk shoulder 8 is a hinge 8 is a pulling rod 10 is a pulling rod 11 Handle post 12 has screw groove 13 has hawk stopper 13a has guide piece

Claims (1)

[Scope of utility model registration request] 1. An inner pipe having a predetermined length, which is connected to the head pipe through a head rotating accessory, is inserted into the head pipe, and a hawk stem having a handle post housed therein is inserted in the inner pipe. When the hawk stem is inserted, the lower end of the hawk stem and the upper end of the hawk shoulder are connected by a one-way hinge, and a hawk stopper for restricting upward movement of the head pipe or the inner pipe is further provided at the upper end of the hawk stem. A bicycle characterized by being fitted.