JP2009280182A - Stick handlebar bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a triple-seater bicycle allowing for an easy operation of a handlebar, safe and free from toppling. <P>SOLUTION: In the bicycle, a pair of stick handlebars 1, 1 with brakes, and stick spindles 2, 2 for holding the stick handlebars in a fixed manner in the longitudinal, right-to-left and vertical directions while keeping the shoulder width spacing. The stick spindles 2, 2 are connected to each other via a bridge 3. A fellow occupant fixing seat 4 is fixed thereon to a center frame 5. A steering front wheel 10 having a bicycle fork 11 is provided therebelow. A double saddle 6 and a driving wheel 8 are provided on a rear part of the center frame 5. A flywheel 88 is provided concentric to the driving wheel 8. The driving wheel 8 and the flywheel 88 are chain-driven by a pedal 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

Detailed Description of the Invention

It relates to a three-seater bicycle that is safe and does not tip over even when a child is on it.

JP-A-2001-10577, JP-B-53-17222, and the like are known as a three-wheeled bicycle so that the steering wheel does not fluctuate.

The present invention has a structure in which a pair of stick handles and a stick shaft that holds the stick handles in the front, rear, left, right, up and down directions are disposed at a shoulder width interval, and the front wheels are steered lightly by operating the stick handles. In addition, the flywheel provided near the rear wheel is difficult to tip over.

Problems to be solved by the invention

In conventional two-wheeled bicycles called mamachari, the bar handle tends to fluctuate when starting or turning, and if a heavy object or a child is placed on the front basket, the handle becomes heavy and the operation is not agile, making it easy to cause an accident. Met. There were three-wheel structures (Japanese Patent Laid-Open No. 2001-10577, Japanese Patent Publication No. 53-17222) to improve the stability of the steering wheel and make it difficult to tip over. As a result, the steering operation reliability at the start and at the time of turning was insufficient, which was another feeling.

Japanese Patent Application Laid-Open No. 2001-10577 Japanese Patent Publication No.53-17222

Means for solving the problem

In place of the conventional bar handle, in the bicycle of the present invention, a pair of stick handles 1 and 1 and stick support shafts 2 and 2 that hold the handlebars in the front, rear, left, and right and up and down directions are provided at shoulder width intervals and connected by a bridge 3. A fixed seat 4 on which an infant or a load can be placed is dropped above the bridge 3 and a steering front wheel 10 is disposed below the bridge 3 so that the driver supports both arms with a front and rear stationary stick handle. The handle can be operated without wobbling while maintaining stability.

In addition, the second problem solving means is that the flywheel is mounted so as to be in the same direction of rotation above or coaxially with the rear wheel, and is rotated manually or electrically so that steering stability can be achieved even when traveling at low speeds or on uneven roads. It can be maintained and operated, and the gyro effect is used to make it difficult to fall.

The invention's effect

The operation of the first problem solving means is as follows. In other words, because of the driving with a structure in which the pair of stick handles 1 and 1 are immovably arranged in the front and rear, right and left directions and support both hands, even if a load of children or heavy objects is applied to the front wheels, In addition, it is possible to drive without wobbling at the start or at the time of turning, and it is also possible to run safely with heavy luggage with three people. The child on the fixed seat is not swung at the time of the handle operation, so there is no risk of turning around when falling asleep.

When the flywheel is mounted near the rear wheel or coaxially with the rear wheel, the gyro effect will prevent the bicycle from tipping over, even on uneven roads and slopes, making it a safe bicycle.

1 (a) and 1 (b), a pair of stick handles with brakes 1 and 1 and stick shafts 2 and 2 that hold them in front, rear, left, and right and up and down 6 directions but hold them rotatably are provided with a shoulder width interval. In addition, the stick support shafts 2 and 2 are connected by a bridge 3, and the steering front wheels 10 and 10 are arranged in parallel below the steering forks 1 and 11 via the bicycle forks 11 and 11, respectively. A single stick shaft 2, 2 is rotatably supported so that the front wheels 10, 10 with bicycle forks can be steered by a rotating operation. There is no tie rod. The bridge 3 bridges the stick support shafts 2 and 2 symmetrically and is fixed to the center frame 5 at the center of the bicycle by welding.

Reference numeral 4 denotes a passenger fixing seat on which a child is placed. The passenger fixing seat 4 is completely held between the stick handles 1 and 1 and is held on the bridge 3, and is mounted and fixed on the front portion of the center frame 5.
Reference numeral 6 denotes a long parent-child saddle that allows a parent to sit with a second child on the back and to pedal the pedal 9. The parent-child saddle 6 is supported on the rear portion of the center frame 5 by a seat post 7 so that the height and the front-rear position can be adjusted.

Reference numeral 8 denotes a driving rear wheel with a built-in coaster brake, which is rotatably supported at the rear portion of the center frame 5 and is chain-driven by a driver's pedal 9 for pedaling. When the driver reverses the pedal 9, the coaster brake can be operated to brake the rear wheel.
Further, on the side opposite to the rear wheel chain drive from the pedal, a flywheel 88 is arranged coaxially with the rear wheel 8 and is driven by a chain sprocket by a flywheel small-diameter sprocket 83 with the driver's pedal 9 input. It has a structure that can rotate at a higher speed.

  In the bicycle of the present invention having the structure described above, the driver can ride two children on the front and rear fixed seats, and both hands are attached to a pair of brake handle handles 1 and 1 to stably support the upper body. By steering the vehicle, the front wheels 10 and 10 with the bicycle fork are smoothly steered by the separate stick handles 1 and 1, and the rear wheel 8 is driven to rotate by stepping on the pedal, and the flywheel 88 is also driven at a high speed gyro. It is used as a three-seater three-wheeled safety bicycle.

2 (a) and 2 (b) showing a second embodiment of the present invention, a pair of shoulder handles with brakes 1 and 1 are spaced apart from each other with a shoulder width interval, and they are held in front, rear, left, right, up and down directions but are rotatably supported. Stick shafts 2 and 2 are provided. A headlight 12 has a flashlight shape as a whole handle, and is removed to become two portable lights. A fixed sheet 4 is disposed between the stick shafts 2 and 2 and is connected by a bridge 3 to form a U-shape as a whole. The center part of the bridge 3 is welded to the front part of the center frame 5, and the C-shaped double-wheel type front wheels 10 and 10 are turned to the front part of the center frame 5 on the vertical turning shaft part formed at the tip of the center frame 5. It is freely held and arranged.

The front wheels 10 and 10 each have a built-in drum brake and are interlocked with the brake lever of the above-mentioned stick handle with brake 1 and 1. The stick handle 1 passes through the stick shaft 2 and protrudes to the lower end, and one end of a tie rod 13 is connected to an operation protrusion integral therewith. The other end of the tie rod 13 is connected so as to be able to turn the vertical turning shaft so that the twin-wheel type front wheel 10 can be steered. A parent and child saddle 6 is formed integrally with the fixed seat 4 so that the parent and child can sit together like an idle circle.

In the walking stick bicycle with the above structure, two children sit in a tandem on a free-roller-shaped parent-child saddle 6 connected to the fixed seat 4, and an adult attaches both hands to the left and right walking stick handles 1 and 1 with the upper body. , The steering of the two-wheel type front wheel 10 is operated, the pedal 9 is driven, the rear wheel 8 is driven, and the three wheels can stably travel. The double-wheel type front wheel 10 with a built-in drum brake is operated by applying the brake of the brake handle sticks 1.1.

In FIGS. 3A, 3B, and 3C showing a third embodiment of the present invention, 1 is a stick handle with a brake, and 2 is a stick support that holds it rotatably in the front-rear, left-right, up-and-down directions, but is axially rotatable. Axes, 3 is a bridge connecting them, 4 is a fixed seat for two-seaters above, 5 is a center frame, 6 is a parent saddle provided behind it, 7 is a seat post that supports it, 8 is a coaster brake A built-in driving rear wheel 9 is rotatably provided on the center frame 5 by a pedal. Reference numeral 10 denotes a steering wheel having a small diameter, and has a structure that is rotatably held by a bicycle fork just below the stick handle, similar to the first embodiment.

In this embodiment, steering wheels 10 are respectively provided via a bicycle fork under a pair of brake handle handles 1 that are held stationary in the front, rear, left, and right directions by a stick shaft 2 disposed at a shoulder width interval. However, in this embodiment, a tie rod 13 that synchronizes the left and right front wheels is additionally provided to facilitate the handle operation. This also allows one-handed operation. In addition, the fixed seat 4 in the front seat is made for two children and is wide. Two children sit next to each other, but when you ride alone, you can ride in the middle with balance in mind.

Further, in this embodiment, a battery motor 82 and a planetary gear (a motor gear 84 and a flywheel gear 86 are incorporated) are provided above the driving rear wheel 8 in order to give the bicycle a gyro effect by a flywheel. A flywheel case 87 having a flywheel 88 is provided. The flywheel case 87 is fixed to the rear wheel shaft 89 and the saddle 6 with a fixture 60. Reference numeral 90 denotes a stand that also serves as a flywheel switch. When the stand 90 is raised, the motor 82 starts rotating, and the gyro effect is activated so that the bicycle can start without wobbling. When the travel is finished and the stand 90 is set up, the motor is switched off and the rotation of the flywheel is stopped.

In the walking stick bicycle having the above structure, when two children are put on the fixed seat 4, the stand 90 is lowered, and after the children are put on, the stand 90 is raised and a motor switch is turned on to turn the flywheel 88. The gyro effect is demonstrated and it does not fluctuate and can be started smoothly.

4 (a), 4 (b) and 4 (c) show an application example of the two-wheeled bicycle according to the present invention. The holding shafts 2 and 2 to be held are arranged with a shoulder width interval, and a fixing sheet 4 is provided therebetween. Headlights 12 to be removed as flashlights are provided on the stick handles 1 and 1, respectively, and the stick support shafts 2 and 2 are integrally connected by a bridge 3 and formed in a U-shape as a whole. A small-diameter front wheel 10 is provided at the lower center of the pair of stick support shafts 2 and 2 via a central bicycle fork 11 so as to be steerable, and the tie rod 13 connected to the central bicycle fork 11 is provided. Thus, the center small-diameter front wheel 10 can be steered by the operation of the stick handle 1.

A bicycle fork 11 that rotatably holds the small-diameter front wheel 10 is rotatably provided at the front end of the center frame 5, and supports the fixed seat 4 at the upper end. The parent-child saddle 6 is formed integrally with the fixed seat 4 to have a three-seater floating circular shape, and is supported by a seat post 7 so that the upper and lower sides can be adjusted.

A flywheel 88 is provided coaxially on the rear wheel 8 and is held by a rear wheel shaft 89. A motor 82 with a built-in battery is attached to the rear wheel support portion, and meshed with the motor gear 84 and the flywheel gear 86 to be compactly arranged.
The rotation of the flywheel is controlled by raising and lowering the switch stand 90.

The bicycle with the above structure has a two-wheel structure and may fall down, but thanks to the brake-steel handle that is arranged with a shoulder width interval and is stationary in the front, rear, left, and right directions, but is held rotatably. The driver's upper body is supported evenly on the left and right sides, can stably travel at low speed, and coupled with the gyro effect of the flywheel 88, safe driving that does not fluctuate even when three people ride is possible.

5 (a) and 5 (b), a fifth embodiment of the present invention is shown, and a pair of brake handle sticks 1 and 1 with a built-in headlight 12 and spaced apart from each other are arranged on the stick support shaft 2 in the front-rear direction. Although it is fixed in the left and right and up and down directions, it is supported so that it can rotate freely. Under the walking stick supporting shafts 2 and 2, front wheels 10 and 10 with bicycle forks are respectively provided. They are connected by side frames 30). The left and right bicycle forks 11 are connected to each other by a flexible tie rope 13 so that the steering wheel can be steered simultaneously.

A fixed seat 4 on which a child is placed is provided between the stick handles 1 and 1 and is installed at the tip of the center frame 5. A recumbent parent / child saddle 6 is fixed to the rear portion of the center frame 5 by a seat post 7, and a pair of bridges 3, that is, attachment shafts 32 of the side frames 30 are provided. It has been. As a result, the pair of side frames 30 can be folded. A drive wheel 8 is provided at the rear end of the center frame 5 so that it can be rotated by a chain drive from a pedal 9.

  The walking stick bicycle having the above structure is a folding bicycle, and the side frames of the bridge 3 are pulled together to be folded compactly during transportation or packing.

FIG. 6 shows a sixth embodiment of the present invention. In this case, the stick handle with brake 1.1 is not rotated and is fixed to the stick support shaft, and the steering function is also killed by the front two wheels with brake. It is made to take. For this purpose, 60 fixed casters are annularly arranged in contact with the tires of the rear wheels, and these wheels are called multi-wheeled caster wheels, which can move both vertically and horizontally. (Refer to Unexamined-Japanese-Patent No. 10-179650) It is a recumbent style three-wheeled vehicle.
Because of this structure, the direction of the front wheels does not change even when the direction is changed, so a large fixed seat 4 is provided in a large space between the front wheels and the front wheels, so that two children can be seated comfortably.

FIG. 7 shows a seventh embodiment of the present invention. In this case, the stick handle is fixed as in the previous embodiment, and the front two wheels are also killed in the steering function like a forklift, but these two front wheels are configured as multi-wheeled caster wheels. After all, since the structure can move both vertically and horizontally (see JP-A-10-179650), it is a mechanism that can bend and change the direction of the brake applied.
With such a structure, the space between the front wheel and the front wheel can be used effectively, and the fixed seat 4 can be made extremely large. It is safe because the front wheels are not steered, and it is possible to get the child on the front like a wheelchair.

The invention's effect

  In the walking stick bicycle according to the present invention, a pair of walking stick handles 1, 1 with brakes are arranged at a shoulder width interval, and the stick support shafts 2, 2 that hold the shafts rotatably while being fixed in the front, rear, left, right, up, down directions are bridges 3. The steering front wheel 10 is movably provided below the steering wheel 10 and the fixed seat 4 is fixed to the center frame 5 above the steering wheel. Even if you ride a bicycle, the steering wheel will not wobble and you can drive without danger.

  In addition, in the case where the flywheel is mounted in the vicinity of the rear wheel of the walking stick bicycle of the present invention, the posture is kept stable by the gyro effect, so that it is possible to drive more safely without fear of falling down.

  In addition, if the stick handle is fitted with a headlight and the entire handle is a flashlight, it will be a 2mm type headlight, so the vehicle width interval is displayed and the visual effect is remarkable, so it has the advantage of being able to run safely is there.

  If the rear wheel 8 employs a multi-wheeled caster wheel, the front wheel and the front wheel can have a large space and can be ridden from the front like a wheelchair.

  In the case where multi-wheeled caster wheels are adopted for the front two wheels, the direction can be changed by the front wheels, so that there is an advantage that a smooth bending can be achieved.

(A) is a front view of the first embodiment of the present invention (b) is a side view (c) is a plan view (A) is a front view of the second embodiment of the present invention (b) is a side view (A) is a front view of the third embodiment of the present invention (b) is a side view (A) is a plan view of the fourth embodiment of the present invention (b) is a side view (c) is a sectional view (A) is a plan view of a fifth embodiment of the present invention (b) is a side view (A is a plan view of a sixth embodiment of the present invention, and (b) is a side view. (A is a plan view of a seventh embodiment of the present invention, and (b) is a side view.

Explanation of symbols

Reference numeral 1 denotes a stick handle 2, a stick support shaft 3, a bridge 4, a fixed seat 5, a center frame 6, a parent-child saddle 7, a seat post 8, a drive wheel 9, a pedal 10, a steering wheel 88, a flywheel

Claims (7)

A pair of brake handle sticks 1 and 1 and stick support shafts 2 and 2 that hold the handlebars 1 and 1 immovably in the front, rear, left, and right directions are disposed at a shoulder width interval and connected by a bridge 3. Below the bridge 3, a front wheel 10 with a brake is provided by a bicycle fork 11, and a passenger fixing seat 4 is disposed in the upper center, and is fixed to the center frame 5 and is driven by a rear wheel pedal. bicycle A front wheel brake grip is provided on each of the pair of brake handle sticks 1, 1, and the front wheels 10, 10 with brakes are mounted on the bicycle fork directly below each of the support shafts 2, 2 that holds the front wheel brake grip in front, rear, left, right, up and down directions. 11. A stick handle bicycle according to claim 1, which is provided through 11 and 11 and has a three-wheel structure in which a coaster brake is provided on the rear wheel 8. 2. The stick handle bicycle according to claim 1, wherein the steering wheel is a two-wheel or three-wheel structure in which one or two front steering wheels are provided in the lower center between the stick support shafts 2 and 2 of the stick handles 1 and 1. 4. A stick handle bicycle according to claim 1, wherein a motor flywheel 88 and a switch stand 90 are provided on the rear wheel, and the switch stand 90 is switched on when the switch stand 90 is raised. The stick handle bicycle according to claim 1, wherein a small-diameter flywheel sprocket (83) is provided coaxially on the rear wheel so that the pedal (9) can drive the chain at high speed. 3. The stick handle bicycle according to claim 1, wherein a headlight is provided on the stick handle 1.1 so as to be a removable flashlight. The above-mentioned stick handles 1 and 1 are fixedly held on the stick shafts 2 and 2 so that they cannot rotate, the front two wheels with brakes are fixed without steering function, and the rear wheel 8 or the front two wheels 10 and 10 with brakes are composed of multiple wheels. The walking stick bicycle according to claim 1 or 2, wherein the bicycle is a caster wheel.

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