JP3197443U - Bicycle wheel display board - Google Patents

Abstract

An object of the present invention is to provide a donut-shaped disk to be mounted in a space surrounded by wheel hubs and spokes, which can be attached to and removed from a gap between spokes easily while being in close contact with a rim to eliminate a suspended state. Provide a circular disk. A bicycle wheel hub and spoke are divided into two or more by dividing a donut-shaped disc 3 having the same size as the inner diameter of the rim 1 and having a plurality of cuts corresponding to the number of spokes 2 provided on the outer periphery. The space surrounded by is inserted while rotating from the gap between the spokes, and after the insertion is completed, the space is reconstructed into a donut-shaped disk. As you get closer to the rim, the space becomes narrower and there is an area that is less than the thickness of the donut disk. In this part, the force that the spoke sandwiches the donut disk works, and a special fastener is required to prevent falling out And not. [Selection] Figure 1

Description

  The present invention relates to a display board that is attached to a space surrounded by a wheel hub and spokes in a spoke-equipped bicycle.

  There are two types of display boards that can be attached to the bicycle wheel and attached to both sides of the wheel. A product called "Rear Wheel Cover" that puts plastic discs on both sides of the wheel has been put to practical use, such as "Doppel Ganger". This type is also marketed in Japan.

Next, there is a type that is mounted in a space surrounded by the wheel hub and spokes (see, for example, Prior Art Document 1).
For the type that is installed in the space surrounded by the hub and spoke of this wheel, the donut-shaped donut disk has a straight cut part, and inserts one end of the cut part while rotating it through the gap between the spokes. The donut is in contact with the spokes using fasteners. (See Prior Art Document 1)

Registered Utility Model Publication of Utility Model Registration No. 3184312

  In the type that is attached to both sides of the wheel, there is a problem that the wheel is once removed from the vehicle body and the sprocket, the chain, and the like need to be attached and detached with a dedicated tool.

In the type attached in the space surrounded by the hub and spoke of the wheel, since the spokes are all connected between the hub on both sides and the center of the inner surface of the rim, in the space surrounded by the hub and spoke, When viewed from the cross section viewed from the circumferential direction of the donut disk, the space becomes narrower as it approaches the rim, and the space disappears several centimeters before the rim, so unless it is a soft material donut-shaped disk that is easily deformed, Cannot be inserted.
In addition, the ripple for fixing to the rim is an obstacle to insertion.
This obstacle can be avoided by making the size of the donut disk smaller than the inner diameter of the rim and creating a gap with the rim. (See Prior Art Document 1)
However, in this avoidance method, since the donut-shaped disk is suspended, the centrifugal force generated when the wheel rotates at high speed may cause the donut-shaped disk to be damaged or dropped.
In order to prevent the fear, there is a problem that the material must be fixed with a strong fastener, and the material of the donut-shaped disk is required to be strong.

  The first problem to solve the above problems is to eliminate the suspended state by making the outer periphery of the donut disk attached in the space surrounded by the hub and spokes of the wheel close to the rim and stabilized. It is.

  The second problem is to prevent difficulty in inserting a donut-shaped disk into the space from the gap between the spokes, and make it easy to attach and remove.

As for the first problem, in the space surrounded by the hub and spokes, when viewed from the cross section viewed from the circumferential direction of the donut disk, the area where the space becomes narrower as it approaches the rim is limited to the periphery of the spoke If attention is paid so that the donut-shaped disk does not exist in that portion, that is, if a notch is provided in the spoke peripheral portion of the outer periphery of the donut-shaped disk, the other portions of the outer periphery of the donut-shaped disk are It is possible to come into close contact with the rim.
Therefore, the present invention is most characterized by providing a plurality of cuts in accordance with the number of spokes on the outer peripheral portion of the donut-shaped disk.

As for the second problem, if you try to insert a single donut-shaped disk through the gap between the spokes with a single cut line, the friction on the contact surface between the outer periphery of the donut-shaped disk and the rim Ripple is an obstacle and difficult to insert.
Therefore, the present invention divides a donut-shaped disk having the same size as the inner diameter of the rim into two or more parts, and rotates the gap between the spokes in the space surrounded by the hub and spokes of the bicycle wheel. The main feature is that one donut-shaped disk is reconstructed in the space after insertion.

The donut-shaped disk of the present invention has a notch on the outer periphery thereof, so that the outer periphery of the donut-shaped disk other than the notched part can be in close contact with the rim, eliminating the suspended state of the donut-shaped disk can do.
On the other hand, in the vicinity of the cut portion, when viewed from the cross section viewed from the circumferential direction of the donut disk, the space becomes narrower as it approaches the rim, and there is an area that is less than or equal to the plate thickness of the donut disk. By adjusting, the force that the spoke sandwiches the donut-shaped disk works in this part, and as a result, the entire donut-shaped disk is stabilized, so that a drop-off preventing effect is obtained and no special fastener is required.
Even if the centrifugal force is applied to the donut disk while the wheel is rotating at a high speed, the outer periphery of the donut disk is in close contact with the rim and is stable, so there is no risk of dropping or damage.
As described above, the material of the donut-shaped disk does not need to be so strong and no special fastener is required, and the size of the donut-shaped disk can be the same as the inner diameter of the rim. .

  Next, when inserting into the space between the hub and the spoke through the gap between the spokes, two or more divided semicircular plates will be inserted. At that time, the outer periphery of the donut-shaped disc and the rim A gap and a margin are generated between them, and the operation can be easily performed.

FIG. 1 is a side view of a bicycle wheel showing an example in which a bicycle wheel donut-shaped disk is divided into two parts and mounted on the wheel, and reconfigured into one donut-shaped disk. (Example 1) FIG. 2 is a cross-sectional view taken along the line A-A ′ of FIG. (Example 1) FIG. 3 is an external view of a donut-shaped disk piece obtained by dividing a bicycle wheel donut-shaped disk into two parts. The other pieces have the same shape and are not described here. (Example 1) FIG. 4 is an external view of the whole donut-shaped disk when a donut-shaped disk formed by dividing a donut-shaped disk for a bicycle wheel into two is formed in a space surrounded by a spoke and a hub. is there. (Example 1)

  Divide the donut-shaped disk with the same size as the inner diameter of the rim and with a plurality of notches on the outer circumference according to the number of spokes into two or more, and within the space surrounded by the hub and spokes of the bicycle wheel A bicycle wheel display board characterized by being inserted while rotating through the gap between the spokes and reconstructing a donut-shaped disk in the space after the insertion is completed

  Compared with the prior art, it can be easily attached and detached, and the bicycle rim can be made as large as the inside diameter of the bicycle rim, so that an effect as an advertising medium with a limited advertising period can be obtained.

The display area is larger than that of the display board as in the existing technology, and the effect is great when used for advertising.
Moreover, since the presence of the bicycle itself can be visually recognized, the effect of preventing traffic accidents is great.
In addition, the anti-theft effect is enhanced because it is conspicuous when the original design is displayed.

1 Tire and rim 2 Spoke 3 Donut disk 4 Axle

Claims (2)

  A donut-shaped donut-shaped disk having a donut-shaped disk having the same size as the inner diameter of a bicycle wheel rim, and having the same number of cuts as the number of spokes on the outer periphery thereof. Divide the doughnut-shaped donut disk into two or more parts, and insert the divided parts into the space surrounded by the hub and spokes of the bicycle wheel while rotating them from the gaps between the spokes. A donut-shaped disk, wherein a donut-shaped disk is reconstructed in a space.

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