JPH0952552A - Auxiliary wheel mechanism for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the labor to move a bicycle when the bicycle has punctured. SOLUTION: An auxiliary wheel mechanism consists of a small wheel 16, a body part 12 which is U-shaped as a whole, and constituted so that a wheel of a bicycle is fitted to a hollow part 12E, and in which the small wheel 16 is fixed to its bottom surface 12B, and connecting means 14, 20 to be releasably connected to the body part 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle auxiliary wheel mechanism used for facilitating the work of moving a bicycle (including a motorbike) when the tire is flat.

[0002]

2. Description of the Related Art When a tire of a bicycle is punctured, all the air is immediately exhausted and the bicycle becomes inoperable. At that time, the driver has to push the bicycle to move to the place where the puncture repairable equipment exists.

[0003]

However, unlike a tire of a car, when a tire of a bicycle is punctured, all the air is immediately exhausted as described above. Therefore, when the bicycle is pushed in that state, the tire of the tire and the road surface are punctured. The friction with and becomes extremely large. As a result, there is a problem that a very large resistance is generated when pushing the bicycle, and a great amount of labor is spent on the work of moving the bicycle to the puncture repair facility.

The present invention has been proposed to solve the above problems of the prior art, and provides an auxiliary wheel mechanism for a bicycle used for easily moving a tire having a flat tire to a predetermined position. Has an aim.

[0005]

An auxiliary wheel mechanism for a bicycle according to the present invention comprises a small wheel, a U-shape as a whole, and a bicycle wheel fitted in a hollow portion thereof.
A body portion to which the small wheels are fixed on the bottom surface,
Connection means for releasably connecting the main body portion.

Here, the word "bicycle" means not only a two-wheeled vehicle or a three-wheeled vehicle that is driven only by ordinary human power, but also a motorized bicycle or a built-in electric motor that temporarily and auxiliary operates on an uphill or the like. This is the wording to the effect that it also includes types of bicycles.

According to the bicycle auxiliary wheel mechanism of the present invention having the above-mentioned structure, the flat tire or wheel is fitted to the main body portion, and the main body portion and the flat tire or wheel are joined by the connecting means. Join. When the bicycle is pushed in this state, the small wheels (casters) fixed to the bottom surface of the main body come into contact with the road surface, so that the resistance when moving the bicycle is extremely small as compared with the case where the flat tire comes into direct contact with the road surface. Therefore, the work of moving the bicycle to the facility for repairing the puncture is extremely easily performed, and labor is saved.

Here, when the bicycle is moved with the bicycle auxiliary wheel mechanism of the present invention set, it is necessary to apply a flat tire or a brake on the wheel side and maintain the braking state during the movement. There is. If the brake is not applied, the flat tire or wheel rotates, and the bicycle auxiliary wheel mechanism of the present invention set there also moves as the tire or wheel rotates and is fixed to the bottom surface of the main body. This is because the small wheels (casters) will not come into contact with the road surface.

In implementing the auxiliary bicycle wheel mechanism of the present invention, it is preferable that the inner wall surface of the hollow portion of the main body is covered with a cushioning material for holding the bicycle wheel. This is because it not only protects the tire material that is in a state where air is released and is easily damaged, but it is also applicable to multiple types of bicycles by adjusting the coating thickness of the cushioning material. .

Further, in the bicycle auxiliary wheel mechanism of the present invention,
The coupling means includes a plate member having both edges hanging downward, and a notch groove is formed in the downward hanging portion, and the notch groove is fixed to a rising portion of the main body portion. It may be configured to engage with the fastening means. Alternatively, the coupling means is composed of a plate-shaped member, one end of the plate-shaped member is rotatably coupled to one rising portion of the main body portion by a hinge means, and the other end of the plate-shaped member is connected. It may be configured such that it can be connected to and released from the other rising portion of the main body by means. Further, the connecting means may be composed of a string-shaped member.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 is used as a whole.
The bicycle auxiliary wheel mechanism of the present invention represented by 0 is
The body 12 and the plate member 14 are provided. Body 12
Is formed in a U shape as a whole, and small wheels or casters 16 are fixed to the bottom surface 12B by fixing means 22 (see FIG. 2). As will be described later, the rising portions 12UL and 12UR of the main body 12 are
And the hollow portion 12E surrounded by the bottom surface 12B,
The tires (wheels) of a flat tire are fitted or inserted.

Both edge portions of the plate member 14 hang downward to form hanging portions 14L and 14R, and notch grooves 18L and 18R are formed in the hanging portions 14L and 14R, respectively. Then, each notch groove (18
1, L and 18R) are the fastening means 20 (the rising portion 12U in FIG. 1) fixed to the rising portions 12UL and 12UR of the main body 12, as indicated by the arrow C in FIG.
Only the R-side fastening means is shown to be engaged and integrated.

The inner wall surface of the hollow portion 12E of the main body portion 12, in other words, the bottom surface 12B, the rising portions 12UL and 12U.
The inner wall surface of R is doubly covered with a cushioning material for holding a bicycle wheel (not shown in FIG. 1).
2-S1, 12-S2. Also, the plate member 1
The cushioning material 14-S is also adhered to the lower surface of No. 4.

Next, the operation of the embodiment shown in FIG. 1 will be described with reference to FIGS. First, as shown by arrow I in FIG. 2, a flat tire (rear wheel of bicycle B shown in FIG. 4)
The T is inserted into the hollow portion 12E of the main body 12. At this time,
Cushioning material 12-S1, 1 for covering the inner wall surface of the hollow portion 12E
By appropriately adjusting the coating thickness of 2-S2, it is possible to eliminate the inconvenience such as so-called "rattle" due to the difference between the width W of the hollow portion and the width T of the tire T.

As described with reference to FIG. 3, the position where the main body 12 and the tire T are combined must be between the spokes S (FIG. 3) of the flat wheel.

When the tire T is inserted into the hollow portion 12E of the main body 12, the plate member 14 is inserted from between the spokes S as shown in FIG. 3, and the hanging portion (see FIG. Then, the notch groove (only reference numeral 14R is shown) (only the reference numeral 18R is shown in FIG. 3) is engaged with the fastening means 20. Then, the main body 12 and the plate member 14 are integrally fastened and fixed by the fastening means 20. As a result, the tire T is attached to the main body 1
Even if it is attempted to remove it from the second hollow portion 12E, it cannot be removed because of the plate member 14. That is, the tire T, the main body 12, and the plate member 14 are integrally fixed.

In this state, as shown in FIG. 4, the casters 16 make rolling contact with the road surface R on the punctured rear wheel T side, so that the resistance when the bicycle B is pushed and moved becomes very small. Then, the labor required for moving the bicycle B to the puncture repair facility (not shown) is significantly reduced.

When the bicycle B is moved to the puncture repair facility (not shown), the fastening means 20 is loosened to release the engagement with the cutout grooves 18L and 18R in the hanging portion, and the plate member 14 and the main body portion 12 are separated from each other. To do. Then, the tire T is attached to the main body 12
It is removed from the hollow portion 12E.

FIG. 5 shows another embodiment of the present invention. In FIG. 5, the main body 32 and the plate member 34 are relatively rotatably connected by a hinge 36 which is a connecting means. Here, the plate member 34 in FIG.
It corresponds to the plate member 12 in the above embodiment. However, the hanging portion (reference numeral 34L) is provided only at the end opposite to the hinge 36.

Although not shown in FIG. 5, a cutout groove 18 is formed in the hanging portion 34L, and the body portion 12 is formed.
Fastening means 2 provided on one rising portion 32UL
It is designed to engage with 0. In addition, in order to prevent the drawing from becoming complicated, the illustration of the cushioning material is omitted in FIG. 5 (and FIG. 6).

In the embodiment shown in FIGS. 1-4, the plate member 14 is covered from above, and the cutout grooves 18L and 18R provided in the left and right hanging portions are engaged with the left and right fastening means 20 and 20. By tightening the fastening means, the plate member 14
And the body portion 12 (the tire T) were integrated. On the other hand, in the embodiment of FIG. 5, the plate member 34 rotates around the hinge 36 to engage the fastening means 20 attached to the one rising portion 32UL with the cutout groove 18 of the hanging portion 34L. ing. The other operations are the same, so duplicated description will be omitted.

FIG. 6 shows still another embodiment of the present invention. This embodiment is similar to the embodiment of FIGS. 1-5 except that the main body 42 has no fastening means, but instead of the plate member, a string-like member 44 such as a rubber string (welding or other fixing means). Fixed to the main body portion 42 by 46),
The body 42 and the tire (not shown in FIG. 6) are integrated. Other configurations and operations are shown in FIG.
Since it is substantially the same as that shown by -5, duplicate description is omitted.

[0023]

The functions and effects of the present invention described above are listed below. (1) Instead of the flat tires, the casters roll and make contact with the road surface, so it is possible to significantly reduce the labor required to carry the bicycle to a location having a flat repair facility. (2) Since the entire structure is compact, there is no inconvenience to carry. (3) It is extremely easy to attach and detach to a flat tire.

[Brief description of drawings]

FIG. 1 is a partial assembly perspective view showing an embodiment of the present invention.

FIG. 2 is a process drawing showing one process of mounting on a tire in the embodiment of FIG.

FIG. 3 is a process drawing showing a process different from that in FIG.

FIG. 4 is a process drawing showing a process different from FIGS.

FIG. 5 is a front view showing another embodiment of the present invention.

FIG. 6 is a front view showing still another embodiment of the present invention.

[Explanation of symbols]

10 ... Bicycle auxiliary wheel mechanism 12, 32, 42 ... Main body part 14, 34 ... Plate member 12B ... Main body part bottom surface 16 ... Small wheel (caster) 12UL, 12UR, 32UL ... -Rising portion of main body portion 12E ... Hollow portion 12-S1, 12-S2, 14-S ... Buffer material 14L, 14R, 34L ... Hanging portion of plate member 18L, 18R ... Notched groove 20 ... fastening means 22 ... caster fixing means 36 ... connecting means (hinge) 44 ... string-like member 46 ... string-like member fixing means T ... flat tire (rear wheel of bicycle) ) W: Width of the hollow part of the body

Claims (5)

[Claims] 1. A small wheel and an entire U-shape,
The hollow portion includes a main body portion to which a bicycle wheel is fitted, the bottom surface of which is fixed to the small wheel, and a coupling means releasably coupled to the main body portion. Auxiliary wheel mechanism for bicycles that is characterized. 2. The bicycle auxiliary wheel mechanism according to claim 1, wherein an inner wall surface of the hollow portion of the main body portion is covered with a cushioning material for holding a bicycle wheel. 3. The connecting means includes a plate member having both edge portions hanging downward, and a notch groove is formed in the downwardly hanging portion, and the notch groove of the main body portion is formed. The auxiliary bicycle wheel mechanism according to any one of claims 1 and 2, wherein the auxiliary wheel mechanism for a bicycle is configured to engage with a fastening means fixed to a rising portion. 4. The connecting means is composed of a plate-shaped member, and one end of the plate-shaped member is rotatably connected to one rising portion of the main body portion by a hinge means, and the other end of the plate-shaped member. The bicycle auxiliary wheel mechanism according to any one of claims 1 and 2, wherein the portion can be connected to and released from the other rising portion of the main body portion by a connecting means. 5. The bicycle auxiliary wheel mechanism according to claim 1, wherein the coupling means is a string-shaped member.