JP2007131289A - Safe traveling bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that a front wheel is turned sidewise when handlebars of a conventional bicycle are not held, the handlebars are out of control and the bicycle is toppled in many cases; this occurs in both the bicycle is in a traveling mode or in a parking mode, there is a trouble when placing a cargo into a basket if it is heavy when the bicycle is used for a conveying means; and the bicycle becomes wobbled, the handlebars are unstably steered; and bulky, long or heavy article cannot be conveyed. <P>SOLUTION: There is provided a directivity device in which the direction of a front wheel is not shifted excessively by interposing a spring 7 between a fork leg 2 with the front wheel 3 attached thereto and a frame 1. Any heavy, long or bulky article can be conveyed by attaching a rear carrier C directed downwardly along a rear cargo bed 11 and a rear wheel 4 and consisting of a loading base 13 and a frame body with a wheel 14 attached thereto to a body of the bicycle, and a safe traveling can be assisted. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a safe traveling bicycle having a directional device that prevents the front wheel from swinging when riding and parked, and includes a rear loading platform and a frame that extends downward along the rear wheel and mounts the loading platform and wheels. The present invention relates to a safe traveling bicycle that keeps the bicycle stable by the rear carrier and enables the transportation of heavy and long objects.

  Bicycles are handy vehicles, but they often fall over without the steering wheel being able to control too much movement of the front wheels. Even when parking, the bicycle often falls due to the swing of the front wheels. Bicycles equipped with directivity devices have been sold as a countermeasure against run-out of the front wheels when parking. However, in order to travel safely on a bicycle, it is necessary to prevent the front wheels from shaking during traveling and to ensure steering operation. Also, when the vehicle stops, the front wheels often shake and become unable to operate the steering wheel, and often falls. In the future, as the number of elderly people increases, there is a demand for bicycles that are easy to ride and prevent falling.

When carrying a heavy object or placing a child on the child's seat, the steering wheel operation becomes unstable and the vehicle falls easily. When shopping a lot, it is difficult to put a shopping bag in the basket attached to the front or rear cargo bed. If the baggage is bulky or heavy, the steering wheel cannot be operated.
In the event of an earthquake, roads are severed, traffic is paralyzed and automobiles become unusable. Bicycles are useful for transporting relief supplies, but conventional bicycles have a small load and are not stable. Therefore, there is a demand for bicycles that can be used for transporting goods and are not easily toppled.

In conventional bicycles, if the handle is not held down, the front wheels are turned sideways, and the steering wheel cannot be operated and often falls. This occurs both when riding and when parking.
In order to prevent the bicycle from toppling over when parked, a bicycle equipped with a directivity device that fixes the direction of the front wheel manually or by a stand operation has been put on the market. However, regardless of whether you are riding or parking, keep the straightness in the direction of the front wheels, and when you turn the curve, give resistance to the handle so that the handle does not cut too much, and after turning the curve, the direction of the front wheel A bicycle having a function of restoring straight ahead has not been invented. Therefore, the present invention intends to provide a bicycle equipped with an inexpensive directivity device that controls the direction of the front wheels when riding and parking.

  Bicycles are often used to carry luggage. The front basket is on the front wheel and the rear cargo bed is on the rear wheel. When shopping is heavy, it is difficult to put it in the basket. If the load is heavy, it becomes easy to wobble and the steering of the steering wheel becomes unstable. Moreover, in the structure of the conventional bicycle, a bulky thing, a long thing, a heavy article etc. cannot be conveyed, and is not versatile. Therefore, in the present invention, it is intended to provide a safe traveling bicycle that can carry not only daily items but also bulky items, long items, heavy items, etc., and even elderly people can ride safely.

  The direction of the bicycle is changed by changing the direction of the front wheel by operating the steering wheel. In the present invention, by interposing a spring between the fork foot on which the front wheel is mounted and the frame, the operation of the handle stem connected to the fork stem is controlled so that the direction of the front wheel cannot be excessively shaken. ing.

  As a method of interposing the spring, attach the tip of the spring separately to the upper part of the left and right fork feet to which the front wheels are attached, and apply the tension of the left and right springs to the frame near the head tube with the tip on the opposite side of the spring. A method of fixing so as to be uniform;

  There is a method of fixing both ends of a semicircular arm passing through a through hole of an arm guide attached to a frame and a spring attached to both sides of the through hole to the left and right fork legs.

Alternatively, a cushion material may be used instead of the spring, or the arm may be formed in a ring shape.
As the angle of the front wheel increases, the resistance of the spring increases, so that the handle is not cut excessively and the swing of the handle is reduced. Because the front wheels are restored to straight, there is no accident where the front wheels turn sideways and the bicycle falls.

  In the present invention, a rear carrier capable of helping a bicycle run stably and transporting heavy, long and bulky objects is mounted. The rear carrier is composed of a rear cargo bed and a frame body, the frame body is directed downward along the rear wheel, has a loading platform at the lower part of the frame body, and has wheels attached to both lower ends of the frame body. The rear cargo bed and the frame are usually integrated and fixed to the vehicle body. The loading platform and wheels can be foldable. Alternatively, the loading platform can be extended, or a spring can be used for the wheel mounting portion to absorb vibrations from the road surface.

The effects of the present invention are as follows.

I

Since the resistance increases as the handle is cut, the handle is not cut too much.

B

Since the front wheels always try to restore straight, they will not fall over while riding or parking.

C

Because it can carry bulky items, long items, heavy items, etc. on a bicycle, it is also useful for carrying supplies in the event of an earthquake.

D

There is no need to lift heavy objects, the center of gravity is lowered during the transportation of luggage, and running is stabilized.

Ho

Fall accidents that occur when an infant is placed on or off the infant seat or while traveling are reduced.

F

Bicycle maneuvering is easier for older people and people with physical disabilities.

G

Reduce traffic accidents.

H

Suitable for low-speed driving, easy to stop, and stabilizes the body when the weight of goods to be transported increases.

Re

The function can be improved at low cost without changing the structure of the conventional bicycle.

  The safe traveling bicycle of the present invention will be described with reference to the drawings.

FIG. 1 shows a state in which the safe traveling bicycle according to claim 4 is viewed from the side.
In order to control the direction of the front wheel (3) of the bicycle A, the front wheel (3) is forcibly attached by attaching a spring (7) as a directivity device B between the frame (1) and the fork foot (2). Unless you can change the direction, you can turn straight.
The rear carrier C mounted on the bicycle A is composed of a rear loading platform (11) and a frame (12) extending downward along the rear wheel (4). The frame (12) includes wheels (13) and a loading platform ( 14) is installed.

A directional device B according to the present invention as set forth in claim 1 will be described with reference to FIGS.
The directivity device B includes mounting parts (5) and (6) and a spring (7). In order to provide tension by inserting a spring (7) between the frame (1) and the fork foot (2) of the bicycle A, the mounting part (5) is attached to the frame (1), and the left and right divided into two forks. Attach the attachment parts (6) to the fork feet (2). When the frame (1) and the fork foot (2) are provided with the mounting portion of the spring (7) in advance, the attachment parts (5) and (6) are not required. As shown in FIGS. 2 and 3, when a tension spring is used for the spring (7), when the fork foot (2) is rotated clockwise, the left spring (7) is extended, and the fork foot (2) is moved to the left. When rotated, the right spring (7) extends. When the spring (7) is extended, a restoring force is exerted to give a resistance to the handle. When no force is applied to the handle, the front wheel (3) attached to the fork foot (2) is always directed in a straight direction.

The directivity device B according to the second aspect of the present invention will be described with reference to FIGS. In claim 2, a pressing spring is used as the spring (7). The attachment component (5) attached to the frame (1) has a tip protruding and a through hole (8). A semicircular arm (9) is fixed to the outside of the left and right attachment parts (6) attached to the fork foot (2). The central part of the arm (9) passes through the through hole (8) of the attachment part (5). Furthermore, it arrange | positions so that the arm (9) may pass through the spring (7) of the both sides of a through-hole (8).
If the through-hole [8] is provided in the frame (1) of the bicycle A in advance and the mounting portion for the arm (9) is provided in the fork foot (2), the attachment parts (5) and (6) are not required. .
Thus, when a push spring is used for the spring (7), the right spring (7) is compressed when the fork foot (2) is rotated clockwise, and the left spring (7) is rotated when the fork foot (2) is rotated counterclockwise. 7) is compressed. When the spring (7) is compressed, a restoring force is exerted to give a resistance to the handle. When no force is applied to the handle, the front wheel (3) attached to the fork foot (2) is always directed in a straight direction.

  FIG. 5 shows a state where the rear carrier C is attached to the bicycle A. The rear carrier C is composed of a rear cargo bed (11) positioned at the upper part of the rear wheel (4) and a frame body (12) directed downward along the rear wheel (4), and a loading platform at the lower part of the frame body (12). (13) is mounted, and wheels (14) are mounted on both sides of the lower end. The inclination of the frame (12) with respect to the rear loading platform (11) is about 110 to 120 degrees.

  When the baggage to be transported is large, it is loaded on the loading platform (13) and fixed to the frame (12) with a band or a net. It is possible to carry a small baggage by attaching a basket or bag to the frame (12). There is no need to lift a heavy object or bulky luggage, and the travel is more stable as the weight of the luggage increases. Even a bulky load falls forward along a slanted frame (12), so that the center of gravity falls and the running is stabilized.

It is a side view of the safe traveling bicycle which becomes this invention of Claim 4. 1 is a right side view of a directivity device described in Example 1. FIG. 1 is a left side view of a directional device described in Example 1. FIG. 6 is a right side view of a directivity device described in Example 2. FIG. 6 is a left side view of a directivity device described in Example 2. FIG. 6 is a perspective view of a rear carrier described in Example 3. FIG.

Explanation of symbols

A bicycle
1 frame
2 Fork feet
3 Front wheels
4 Rear wheels B Directional device
5 Mounting parts
6 Mounting parts
7 Spring
8 Through hole
9 Arm C Rear carrier 11 Rear loading platform 12 Frame 13 Loading platform 14 Wheel

Claims (4)

A safe traveling bicycle comprising a directional device that attaches a spring between a bicycle frame and a fork foot to prevent the front wheel from swinging. A semi-circular arm passing through a spring is provided with a directivity device that is attached to a fork foot so as to pass through a through hole provided in a mounting part attached to the frame to prevent the front wheel from swinging. Safe driving bicycle. The rear carrier of the bicycle is extended downward along the rear wheel, equipped with a loading platform, and equipped with a wheel at the lower end to serve as a rear carrier, enabling the bicycle to be stable and transporting heavy and long items. A safe traveling bicycle characterized by that. A safe traveling bicycle comprising a directivity device for preventing a front wheel from swinging by attaching a spring between a bicycle frame and a fork foot, and a rear carrier equipped with a loading platform and wheels.

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