JP2000198482A - Folding type bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding type bicycle which is capable of being easily conveyed while rolling it is a load loaded on it when it is in a folded state, and which can provide a sufficient comfortable riding. SOLUTION: When a rear frame 07 is moved around a rotary shaft 21, the rear frame is connected to a main fram-rear part 03 at a position at which the respective front and rear parts of a body are symmetrical with respect to a dividing plane (A in Fig.) of a hinge, or a symmetry plane. When the body is folded on the hinge 23, the respective front and rear parts of the body are fixed-positioned so that the front and rear parts are arranged in parallel with each other. A left pedal 27 has a recessed part for the left pedal at a part of a pedal block out of a pedal body of the left pedal so that a crank 24 can be fixed when the left pedal is folded around a folding rotary shaft of the left pedal. A right pedal 28 has a small wheel part out of a pedal body of the right pedal so that the pedal can be rotated in contact with the ground surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding bicycle, and more particularly, to a folding bicycle which is folded and rolled in such a manner that front and rear wheels are aligned.

[0002]

2. Description of the Related Art A conventional folding bicycle in which the front and rear wheels can be rolled in parallel with one another is simply folded in two at a hinge at the center of the vehicle body, and a frame tube is folded by using a special hinge to bundle it. And the embodiments are broadly diversified.

[0003]

The conventional folding bicycle, in which the front and rear wheels can be rolled in parallel, has the following problems, ie, as a result of focusing on aligning the wheels, The distance between the handlebar and the saddle becomes short, and it becomes difficult to adjust the position of the saddle, which impairs the riding comfort in the riding mode.In the folded mode, the front carrier and the rear carrier only interfere with transportation, and when riding, It is difficult to roll and carry the loaded luggage while it is loaded, or large luggage cannot be loaded even if luggage can be loaded,
There is a problem in that the posture is not stable at the time of folding, so that it is necessary to always support by applying force.

In the present invention, the frame structure is such that the positional relationship between the handlebar, the saddle and the crank does not change even when the height of the saddle is adjusted according to the physique of the occupant during the riding mode, but when the folding mode is used. Provided is a folding bicycle having a frame structure in which wheels are aligned in parallel, a luggage can be left on a carrier, and the bicycle can be transported in a stable rolling manner without applying force to support the bicycle. It is intended to be.

[0005]

In order to achieve the above-mentioned object, according to the present invention, a seat tube is provided at a rear portion of a main frame so as to be located at a position symmetrical with respect to a head tube with a hinge dividing surface (A in the drawing) as a plane of symmetry. By rotating the rear frame around the rotation axis positioned near the center of the main frame, the rear frame is aligned symmetrically with the front and rear of the body, and the body is bent by the hinge at the center of the main frame , And has a structure in which the front and rear of the vehicle body are aligned in parallel.

In the above frame configuration, the position of the crank and the chain wheel may be on the extension of the seat tube during the riding mode so that the positional relationship between the saddle and the crank does not change significantly even when the height of the saddle is adjusted. desirable.

In the above-described frame structure, it is desirable that the head tube and the seat tube be parallel so that the positional relationship between the saddle and the handlebar does not greatly change even when the height of the saddle is adjusted.

The front carrier and the rear carrier are divided into upper and lower parts, the upper part of the front carrier and the lower part of the front carrier are respectively fixed to the upper part and the lower part of the head tube, the upper part of the rear carrier is fixed to the seat tube, and the lower part of the rear carrier is the rear frame. When the vehicle body is folded by the above structure, the upper portion of the front carrier and the upper portion of the rear carrier are aligned in parallel, and the lower portion of the front carrier and the lower carrier are aligned in parallel.

Further, one of the pedals is foldable and has a recess at an end portion. When the pedal is folded in a state where the vehicle body is folded by the above structure, the recess is engaged with the frame so that the crank is not rotated. And fix
Part of the other pedal is shaped like a small wheel, and has a structure that can be rolled in contact with the ground.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a folding bicycle according to the present invention will be described below with reference to the drawings.

In FIG. 1, a main frame front portion 02 and a main frame rear portion 03 are connected by a hinge 22 and a hinge lever 23. The front wheel 08 is supported by a front fork 06, and the front fork 06 and the handlebar 16 are supported by a head tube 01. The head tube 01 is connected to a main frame front portion 02. The rear wheel 09, the crank 24, and the chain wheel 25 are supported by a rear frame 07. The rear frame 07 is connected to the main frame rear portion 03 by a rotating shaft 21 penetrating into the main frame rear portion 03, and seats through the elastomer 20. Contact with tube 08. Belt or chain 26 is mounted to transmit power from chain wheel 25 to rear wheel 09. A seat pillar 08 that supports the saddle 18 is supported by a seat tube 04 and is fixed in position by a quick lever 17, and the seat tube 04 is connected to the main frame rear portion 03. Left pedal 27 and right pedal 28 are supported by crank 24. Front carrier upper part 1
4 and the front carrier lower part 12 are fixed to the upper part and the lower part of the head tube 01, respectively.
Is fixed to the seat tube 04 and the rear carrier lower part 1
3 is fixed to the rear frame 07. The front mudguard 10 and the rear mudguard 11 are connected to a front fork 06 and a rear frame 07, respectively.

In FIG. 2 and FIG. 3, the rear frame 07
Can rotate to the position of the stopper 19 about the rotation shaft 21, and at this position, the quick lever 17 is loosened, and the saddle 18 and the seat pillar 08 are pushed down until the lower end of the seat pillar 08 hits the elastomer 20. 07 is fixed. Handlebar 16
180 degrees, front fork 06 and front wheel 08
And the front mudguard 10 is rotated 180 degrees. At this time, the front mudguard 10 and the rear mudguard 11 are desirably mounted so as to be symmetrical with the split surface (A in the figure) of the hinge 22 as the symmetry plane.

In FIGS. 4, 5 and 6, the hinge lever 23 is loosened in FIGS. 2 and 3, and the vehicle body is folded in two by the hinge 22. FIG. The position of the rotation axis of the hinge 22 is determined such that the front fork 06 and the rear frame 07 are in contact with a slight gap with the vehicle body folded. The width and height of the front carrier lower part 12 and the rear carrier lower part 13 and the width of the front carrier upper part 14 and the rear carrier upper part 15 are determined so as to come into contact with each other just in parallel with the vehicle body folded. At this time, it is desirable that the front and rear portions of the folded and aligned vehicle body be fastened by a fixed band or a hook or the like so that the front carrier and the rear carrier are not expanded during transportation.

In FIGS. 7, 8, 9 and 10, a portion 29 of the left pedal body that supports the pedal shaft is supported by the crank 24 via the pedal shaft. The pedal block portion 30 of the pedal body of the left pedal is supported by a folding rotary shaft 31 of the left pedal, and the crank 24 is rotated 180 degrees toward the crank 24.
And the width is such that the recessed portion 32 of the left pedal engages with the rear frame 07 in the folded state. The mechanism for fixing the movement so that the pedal block portion 30 of the left pedal pedal body does not rotate from the portion 29 of the left pedal pedal body that supports the pedal shaft in the bicycle configuration is simple, such as providing a projection. Things will be provided as appropriate.

In FIGS. 11 and 12, the small wheel portion 34 of the right pedal unit is located on the crank side of the right pedal unit 33. At this time, the right pedal unit 33 and the right pedal unit 34 are connected to the crank side as much as possible so as not to hinder the rotation of the small wheel portion 34 of the right pedal unit. Also, in order to prevent the right pedal unit from hitting the pedal shaft portion 35, the concave portion 3 of the small wheel of the right pedal unit.
6 is provided.

[0016]

Since the present invention is configured as described above, it has the following effects.

[0017] Since the front and rear wheels are aligned in parallel in the folded configuration, the vehicle can be easily transported and towed by rolling with the handlebar.

In the folded state, the vehicle body is greatly inclined by adopting a structure in which the small wheel portion of the pedal body of the right pedal rotates in contact with the ground even if the left pedal fixes the crank and the vehicle body is tilted. This makes it possible to easily carry the vehicle so that it rolls in this state, and it is possible to stand alone even if you release your hand.

In the folded configuration, the front carrier and the rear carrier are aligned in parallel, so that the load carried in the bicycle configuration can be transported as it is, and at the same time, the rear carrier is divided into upper and lower parts. By adopting a configuration that creates a space for placing luggage at a distance, large-sized heavy objects can be loaded.

By adopting a frame structure in which the riding posture does not change significantly even when the height of the saddle is adjusted in the form of a bicycle, the same riding comfort as that of a general bicycle can be obtained when riding and traveling. Can be done.

[Brief description of the drawings]

FIG. 1 is a side view of a riding mode according to the present invention.

FIG. 2 is a side view illustrating a state during folding according to the present invention.

FIG. 3 is a top view illustrating a state during folding according to the present invention;

FIG. 4 is a side view for explaining a folded state of the present invention.

FIG. 5 is a top view illustrating the folded state of the present invention.

FIG. 6 is a front view illustrating the folded state of the present invention.

FIG. 7 is a top view illustrating the riding mode of the left pedal according to the present invention;

FIG. 8 is a front view illustrating the riding mode of the left pedal according to the present invention;

FIG. 9 is a top view illustrating the left pedal in a folded state according to the present invention.

FIG. 10 is a front view illustrating the left pedal in a folded state according to the present invention.

FIG. 11 is a top view illustrating the right pedal of the present invention.

FIG. 12 is a front view illustrating the right pedal of the present invention.

FIG. 13 is a perspective view illustrating a right pedal and a left pedal of the present invention.

[Explanation of symbols]

01 Head Tube 02 Main Frame Front 03 Main Frame Rear 04 Seat Tube 05 Seat Pillar 06 Front Fork 07 Rear Frame 08 Front Wheel 09 Rear Wheel 10 Front Mud Guard 11 Rear Mud Guard 12 Front Carrier Lower 13 Rear Carrier Lower 14 Front Carrier Upper 15 Rear Upper part of carrier 16 Handlebar 17 Quick lever 18 Saddle 19 Stopper 20 Elastomer 21 Rotation axis 22 Hinge 23 Hinge lever s 24 Crank 25 Chain wheel 26 Belt or chain 27 Left pedal 28 Right pedal 29 Left pedal pedal Supporting part 30 Pedal block part of left pedal pedal body 31 Left pedal folding rotation axis 32 Left pedal recessed part 33 Right pedal pedal body 4 recessed portion of the small wheels of the pedal body portion 36 right pedal of the pedal shaft of the pedal body small wheel portion 35 right pedal of the pedal body of the right pedal

Claims (2)

[Claims] The main frame is divided into front and rear parts by a central hinge, and a rear frame supporting the rear wheel, the pedal and the chain wheel is connected to a rear part of the main frame by a rotating shaft located near the hinge. The head tube that supports the front fork that supports the front wheel and the handlebar is connected to the front part of the main frame, and the seat tube that supports the saddle and the seat pillar is a hinge dividing surface (A in the figure). The front carrier and the rear carrier are separated into upper and lower parts, respectively, and the front carrier is fixed to the head tube both up and down, and the upper part of the rear carrier is It is fixed to the seat tube, and the lower part of the rear carrier is fixed to the rear frame. By rotating the frame to the stopper position and lowering the saddle and seat pillar, it can be fixed so that it does not move, and in this state, the entire body is bent with the hinge at the center of the main frame, the front and rear wheels, the front carrier upper part and the rear carrier A folding bicycle characterized in that the upper part, the lower part of the front carrier and the lower part of the rear carrier are aligned in parallel. 2. A set of pedals, wherein one of the pedals has a portion in the form of a small wheel, and the other pedal is foldable and has a recess to engage the frame when folded. Item 2. The folding bicycle according to item 1.