JP2002529317A - Folding bike - Google Patents

Abstract

(57) [Summary] It is novel and clever, and its expansion form is smooth and easy. Provided is a foldable bicycle that can dramatically reduce the volume of a bicycle as compared to conventional products. Mainly includes front tube, vertical bar, shaft, seat tube, folding joint, and pedal. The folding joint is installed in a frame tube portion of the bicycle to be folded. The frame tube forms a two-stage system, and a movable connecting part is provided and set on one side of the two-stage system. The opposite side has a raised and opposed pedestal. The front bifurcated pipe and the rear bifurcated pipe are installed in one side on the same side, and the rear wheel rim protrudes toward the front and rear bifurcated pipe and has an arc shape, and the outer diameter of the front wheel corresponds to the inner diameter of the rim of the rear wheel. The clamp end where the clamp and the pedal connect is mounted in a separable manner, and the clamp end pierces the pivot hole at the end of the clamp body with a shaft plug. An engagement plug pressed by a spring is installed inside one end of the main body, and engagement holes are respectively installed on both sides of the end face of the clamp. Accordingly, at the time of the folding operation, the front bifurcated pipe and the rear bifurcated pipe on one side correspond to the front wheel and the rear wheel protruding to one side due to the folding structure of the folding joint and the pedal.

Description

DETAILED DESCRIPTION OF THE INVENTION

TECHNICAL FIELD The present invention relates to a kind of folding bicycle. In particular, the present invention relates to a folding bicycle in which a folding joint and a pedal can be quickly and conveniently locked, the front wheels can be stored in the rear wheels, and the volume of the folded vehicle body can be effectively reduced.

BACKGROUND OF THE INVENTION Bicycles were an alternative to walking in the first place, but motorcycles have emerged, and bicycles requiring human power have gradually become vehicles for young people. In addition, cycling is a form of recreation in recent days when outdoor leisure activities are popular.

On the other hand, most existing folding bicycle designs are capable of bending, folding, and reducing the volume of the handle and shaft. Typically, the structure of the flexure joint depends on the shape in which the rear structure is movably coupled, relatively flexing and mating parts, and deployed in response to the locking structure.

The conventional locking structure realizes a quick-folding component having a compression function by the eccentric principle. That is, a folding joint design that utilizes quick folding components. Primarily, a set of pivot boxes is used, with the lid secured to the bending ends of the shaft. The non-pivoting opposite end of the box, lid, is locked by a quick fold. The standard of the overall structure type is to install a set of mutually engageable fitting parts on the inside relative to the box and the lid. A concave edge is formed on one side, and the opposite side corresponds to the concave edge, and a fitting tube having a hollow bearing and a spring therein is fixedly provided. The bearing is pushed into place and protrudes out of the fitting tube, deploying the bicycle shaft, box,
When the lid is closed, the bearing just fits against, fits against, and is fixed against the concave edge. In addition, using quick folding parts, it fits into the fitting table surface around the lid lid,
Lock the box and lid.

[0005] However, the above-mentioned known structure has a very large number of overall components, so that the cost at the time of assembly is extremely high. In addition, since a solder welding method is used for assembling some components, the manufacturing process is further complicated. Furthermore, the volume of the entire structure is large, protruding, hindering the rider, and poor in aesthetics. In addition, the installation of the automatic fitting structure of the box and the lid is considerably complicated, and the purpose of locking can be finally achieved by separately combining quickly folded parts.

[0006] Furthermore, in many foldable bicycles, a folding joint is installed on a shaft having a large volume, so that the volume can be significantly reduced by one-stage or two-stage folding. However, there are a few that have a folding type for the design of the clamp and the pedal, which are protruding structures on both sides of the bicycle. Thus, in general, a folding bicycle after folding still exhibits a protruding pedal, which hinders carrying and storage.

[0007] In addition, the folding system having the above structure mainly folds the front and rear vehicle bodies with respect to the folding joint position of the upper and lower pipes as a fulcrum. Since the vehicle body has a narrow space even after being folded and is not completely parallel and tight, the folded volume (width) is still enormous, taking up space, and the effect of reducing the volume is not good.

(Content of the Invention) In order to solve the above-mentioned drawbacks of the known structure, an object of the present invention is to provide a folding bicycle.

[0009] The screw used for fixing also has the effect of automatic fitting and localization at the same time, so that it is easy to assemble and advantageous in both production and use. The bicycle includes a front tube, a vertical bar, a shaft, a seat tube, a folding joint, and a pedal. The folding joint is installed in a frame tube portion of the bicycle to be folded. The frame tube forms a two-stage system, and a movable connecting part is provided and set on one side of the two-stage system. The opposite side is provided with a raised and opposed base, on which a movable screw is drilled. A thread is formed at one end of the screw, and an arc surface is formed at the end. A spring is installed in the bore of the base to support the screw, and the screw constantly applies a moving force toward the other base. The screw body opposite to the screw of the other base body has an outer end close to the smooth hole surface, forms a localization hole forming a screw thread at the inner end, and has a front end local base body facing the outer edge of the localization hole. Form a guide slope. When the frame tube unfolds and mates the pedestal, the screw is pushed by the spring, and automatically shrinks along the guide slope by the arc surface to fit into the smooth hole surface of the positioning hole. . The screw is turned, and the screw body is screwed into the screw portion of the stereotactic hole and locked. Conversely, when disengaging and folding, the screw need only be unscrewed, unscrewed and removed from the orientation hole, and can be folded very quickly and the operation is very simple. The frame tube is a bicycle shaft or column.

[0010] Furthermore, it accommodates an outwardly extending pedal internally relative to the wheel, eliminating protrusion on both sides. The bicycle includes a front tube, a vertical bar, a shaft, a seat tube, a folding joint, and a pedal. The pedal is connected by a clamp at the bottom of the shaft end. The clamp end connecting the clamp and the pedal is mounted in a separable manner, and the clamp end connecting the pedal pierces a pivot hole at the end of the clamp body by a shaft plug. An engagement plug pressed by a spring is installed inside one end of the clamp main body, and an engagement hole is installed on both sides of the clamp end face corresponding to the engagement plug. Thereby, the clamp end rotates 180 degrees corresponding to the clamp body, and the engaging hole is fitted and positioned using the engaging plug.

[0011] In addition, when the vehicle body is folded, it is housed in an overlapped manner in half, so that the front wheel is exactly overlapped and housed in the rim of the rear wheel, so that the lateral width can be further reduced and the volume can be further reduced. In the bicycle, a bendable vertical bar and a handle are connected to a front pipe, and a front forked pipe connecting a front wheel is connected to a lower end of the front pipe. The front tube is curved and extended rearward, and the shaft of the folding joint is installed in the middle stage, and is connected to the seat tube on which a seat is installed. The pedal and the chain are connected at the bottom of the shaft end, and a rear forked pipe is extended at the rear end of the seat pipe to connect a rear wheel. The front bifurcated pipe and the rear bifurcated pipe are installed on one side of the same side, and one end rim of each of the front and rear wheels is pivotally connected to both ends. As a result, the front and rear wheels maintain the same axial form, and arc-shaped spokes are formed in the rims of the front and rear wheels with one side raised at an equal distance, and the rim inner diameter of the rear wheel is outside the front wheel. Since the diameter is the same, the folding joint of the shaft is bent. When folding the body,
Since the front wheel body is exactly overlapped and stored in the rear wheel rim, the lateral width is further reduced and the volume is further reduced.

(Embodiment of the invention) mainly includes a front tube 1, a vertical bar 2, a shaft 3, a seat tube 4, a folding joint 5, and a pedal 6. The folding joint 5 and the pedal 6 have a foldable structure, and the front and rear wheels are also foldable so that the volume can be reduced.

In the design method of the folding joint 5, the folding joint 5 is installed at a portion near the center of the shaft 3 and at a portion of the vertical bar 2 near the front tube 1. As a result, the body is folded in half, and the handle 21 and the vertical bar 2 extending vertically are extended.
Meet on the side obliquely downward.

Due to the folding joint 5 on the shaft 3, the shaft 3 forms a two-stage system. One of the two ends of the two stages is movably connected, and the other is fixed.

Next, as shown in FIG. 3, on one side surface of the shaft 3 at the two-stage position, movable connection parts 51 and 52 are installed correspondingly. The movable connecting parts 51 and 52 have holes and are pierced by a movable shaft 53, and a lock base 54 and a fixed base 55 are formed on opposite sides. Both are projecting bases facing each other, and a perforation 541 is formed on the lock base 54 so that the movable screw 5
6 is drilled. A spring 7 is installed in the hole to fit the screw to support the whole, and to constantly apply a moving force toward the fixed base 55. A thread 561 is formed at one end of the screw 56, and an arc surface 562 is formed at the end thereof.

The fixing base 55 faces the threaded body 561 of the screw 56, has an outer end near the smooth hole surface, and has a positioning hole 551 forming a screw thread at the inner end. A guide slope 552 is formed on the front end local base facing the outer edge of the positioning hole 551.

As shown in FIG. 4, when the shaft 3 is unfolded and the lock base 54 and the fixed base 55 are aligned with each other, the screw on the lock base 54 is pushed by the spring 57 and the arc surface 562 causes the screw on the lock base 54 to be pressed. Along the guide slope 552 at the front end of the fixed base 55, it is automatically reduced, and
51 is fitted into the smooth hole surface. At this time, the lock base 54 corresponds to the fixed base 55,
Temporarily fit and form orientation. In this way, a flight when the vehicle body is placed on the ground is achieved.

Further, as shown in FIG. 5, the screw 56 is turned so that the screw body 561 is
1 Screw into the thread at the inner end. Thereby, the lock base 54 and the fixed base 55 are fixed, and the folding joint of the shaft 3 is fixed and connected to correspond to the pivotal structure on the opposite side, and exhibits the same strength as the integrated shaft.

On the other hand, when the shaft 3 is disengaged and folded, as shown in FIG. 6, it is only necessary to unscrew the screw 56, remove the screw body 561, and separate from the positioning hole 551. It can thus be folded very quickly and the operation is very simple.

Subsequently, as shown in FIG. 7, the components of the folding joint design on the vertical bar 2 and the operating principle are the same as those of the folding joint of the shaft 3. The difference is that the directions of pivoting and fixing are oblique, and the circular bar surface of the vertical bar 2 is molded in a slightly mutated form.

Further, as shown in FIGS. 8 and 9, the clamp end 611 connected to the pedal 6 has a pivot hole 614 formed at the end of the clamp body 61 by a shaft plug 613, and the end of the clamp body 61. On one side, an engagement plug 616 pressed inside by a spring 615 is installed. Further, the end face of the clamp end 611 faces the engaging plug 616, and is provided with an engaging hole 612 corresponding to each side, whereby the clamp end 611 rotates 180 degrees corresponding to the clamp body 61, Utilizing the engagement plug 616, the engagement hole 6
12 is fitted and localized.

An important design of the present invention is that the front and rear wheels can be folded to reduce the width. As shown in FIG. 1, the vehicle body of the present invention is provided on the front pipe 1 with
And a front forked pipe 11 is connected to the lower end of the front pipe 1 and pivotally connected to a wheel shaft on one side of the front wheel 12. The front tube 1 is curved and extended rearward, and the shaft 3 of the folding joint 5 is installed at the middle stage and connected to the seat tube 4. At the upper part, the seat pipe 4 is connected to a seat rod 41 on which a seat 411 is installed, and a rear forked pipe 42 is extended rearward. The rear forked pipe 42
On one side connects the rear wheel 43 to maintain a single direction like the front bifurcated pipe 11 so that the front and rear wheels 12, 43 are formed on the same axis. The front and rear wheels 12,
43, rims 121 and 431 have arc-shaped spokes 12 with one side raised at an equal distance.
2, 432 are formed, and the inner diameter of the rim 431 of the rear wheel 43 is the same as the outer diameter of the front wheel 12.

The pedal 6 and the chain 7 are combined on the bottom of the end of the shaft 3 to drive the rear wheel 43.

At the time of folding, as shown in FIG. 10, the folding joint on the shaft 3 and the vertical bar 2 is released, and the front wheel 12, the handle 21 and the like at the front of the shaft 3 are housed between the vehicle bodies, and halved. When folded, the volume is greatly reduced. Moreover, the handle 21 at the upper stage of the vertical bar 2 moves obliquely downward and toward the vehicle body, and the engaging plug 616 on the clamp body 61 is disengaged from the engaging hole 612 of the clamp end 611. Thus, the clamp end 611 engages the pedal 6 and is retracted inward. Since the stored pedal 6 is hidden in the space of the width of the vehicle body, the volume protruding to both sides can be reduced.

Further, as shown in FIG. 11, the wheel body of the front wheel 12 is exactly overlapped and stored in the rim 431 of the rear wheel 43, so that the width is further reduced and the volume is further reduced. . In addition, the vertical rod 2 utilizes the curved form of the vertical rod 2, and the upper pivotal position of the vertical rod 2 interlocks the handle 21 to bend obliquely and is stored on one side of the vehicle body. Thus,
Effectively reduce volume.

As described above, in the folding bicycle of the present invention, at the time of the folding operation, the folding joint and the pedal are stored, and the front bifurcated pipe on one side and the rear bifurcated pipe correspond to the arc-shaped protruding front wheel and rear wheel on one side. The design is novel and clever, and the deployment form is smooth and easy. The volume reduction of the bicycle can be dramatically increased as compared with the conventional product.

[Brief description of the drawings]

FIG. 1 is an embodiment diagram of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a structural diagram of the folding joint of the present invention.

FIG. 4 is an instruction diagram showing a fitted state of the folding joint of the present invention.

FIG. 5 is an instruction diagram showing a locked state of the folding joint of the present invention.

FIG. 6 is an instruction diagram of a release state of the folding joint of the present invention.

FIG. 7 is a structural diagram of a folding joint according to another embodiment of the present invention.

FIG. 8 is a structural instruction diagram of a pedal and a clamp according to the present invention.

FIG. 9 is a combination instruction diagram of the pedal and the clamp according to the present invention.

FIG. 10 is an instruction diagram of the folded state of the present invention.

FIG. 11 is a sectional view of the folded state of the present invention.

[Procedure amendment]

[Submission date] July 2, 2001 (2001.7.2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

2. A front tube, a vertical bar, a shaft, a seat tube, a folding joint, and a pedal, wherein the pedal is connected by a clamp at a bottom end of the shaft, and the clamp and the pedal are connected. The clamp end to be connected is detachably mounted, the clamp end connecting the pedal pierces the pivot hole of the clamp body end by a shaft plug, and one side of the clamp body end is internally pressed by a spring. And the clamp end face is opposed to the engagement plug and is provided with a corresponding engagement hole on each side, whereby the clamp end corresponds to the clamp body. A folding bicycle, wherein the folding bicycle is rotated by an angle and is fitted and positioned in the engaging hole by using the engaging plug.

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Claims (4)

[Claims] 1. A front pipe including a front pipe, a vertical rod, a shaft, a seat pipe, a folding joint, and a pedal, connecting the vertical rod and a handle which can be bent over the front pipe, and a lower end of the front pipe. A front bifurcated pipe connecting the front wheels is connected, the front pipe bends and extends rearward, the shaft of the folding joint is installed in the middle stage, and the front pipe is connected to the seat pipe on which the seat is installed, and the shaft end bottom is connected. At the rear end of the seat pipe, extend the rear fork at the rear end of the seat pipe, connect the rear wheel, and install the front fork and the rear fork at the same side, one-sided. Each part is connected to one side rim of the front and rear wheels, whereby the front and rear wheels maintain the same axial form, and are formed in the rim of the front and rear wheels with arc-shaped spokes with one side raised at an equal distance. However, the inner diameter of the rim of the rear wheel is the same as the outer diameter of the front wheel, and the folding joint of the shaft is bent. Is, when folding the body, wheels of front wheels, because it is exactly overlapping housed within the rim of the rear wheel, the width was more reduced, folding bicycles, characterized in that the reduction in volume is more proceeds. 2. A bicycle comprising: a front tube, a vertical rod, a shaft, a seat tube, a folding joint, and a pedal, wherein the folding joint is installed on a frame tube portion of a bicycle to be folded; Forms a two-stage system, with a movable connecting part corresponding to one side of the two stages, installed, the opposite side has a raised and opposed base, and a movable screw is drilled on the base, A thread is formed at one end of the screw, an arcuate surface is formed at the end, a spring is installed in a bore of the base to support the screw, and the screw is constantly fixed to the other base. Applying the force of the movement in the direction, the thread body facing the screw of the other pedestal has an outer end close to the smooth hole surface, forms a localization hole forming a screw thread at the inner end, and faces the outer edge of the localization hole. A guide slope is formed on the front end local base body, and when the frame tube is deployed and the base body is fitted, the screw is attached to the spring. Automatically reduced along the guide slope by the arc surface, fitted into the smooth hole surface of the localization hole, turned the screw, and screwed the screw body into the thread portion of the localization hole. Foldable bicycle characterized by entering and locking. 3. The folding bicycle according to claim 2, wherein the frame tube is a bicycle shaft or a vertical bar. 4. A front tube, a vertical rod, a shaft, a seat tube, a folding joint, and a pedal, wherein the pedal is connected by a clamp at a bottom end of the shaft, and the clamp is connected to the pedal. The clamp end to be connected is detachably mounted, the clamp end connecting the pedal pierces the pivot hole of the clamp body end by a shaft plug, and one side of the clamp body end is internally pressed by a spring. And the clamp end face is opposed to the engagement plug and is provided with a corresponding engagement hole on each side, whereby the clamp end corresponds to the clamp body. A folding bicycle, wherein the folding bicycle is rotated by an angle and is fitted and positioned in the engaging hole by using the engaging plug.