JPH11141539A - Rotary roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary roller effective for prevention of vibrations and noizes to be favorably used as a running wheel of a mobile machine body by introducing such an arrangement that the elastic deformation of a tire member for shock absorption generated while it is left out of service recovers quickly to its original shape. SOLUTION: A rotary roller 10 has a hub member 11 as a core of roller, and a tire member 13 for shock absorption at the periphery of the hub member 11 is joined with this roller 10, wherein a resilient shock absorbing part 14 in spherical shape made of sponge rubber, etc., to assist from inside the restorage of elastic deformation of the tire member 13 is furnished along the joining surfaces of the hub member 11 located inside and the tire member 13 located outside, and thereby restorage of the tire member 11 in elastic deformation is encouraged by assisting from the inside, and also the tire member 13 can be precluded from plastic deformation, and it is possible to previously prevent generation of vibrations and noises from the tire member 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating roller widely used for running wheels of a general mobile body.

[0002]

2. Description of the Related Art FIG. 2 is a longitudinal sectional view showing a conventional example of a rotating roller 1 used as a traveling wheel of a mobile body. When this type of rotary roller 1 is used as a traveling wheel of a mobile body such as a game vehicle, for example, it is required to have a cushioning property of effectively buffering and absorbing shock and vibration transmitted from a traveling road surface. Therefore, a tire member 3 made of a urethane rubber or the like is formed by baking on the outer periphery of a hub member 2 serving as a roller core formed in a disk shape of metal or resin. A shaft hole 4 into which a rotation shaft (not shown) is fitted is provided on the center rotation axis CC of the hub member 2, and is supported by the moving body via the rotation shaft.

In the conventional rotary roller 1 as shown in FIG. 2, when the mobile body is re-used after being left unused, the load applied to the tire member by the weight of the mobile body when the mobile body is left unattended. The generated elastic deformation may not be restored to the original shape for a while. If the tire member 3 resumes running without being completely restored, it may cause irregular vibration and noise. Such vibrations and noises are particularly intense immediately after resumption of use and when riding over a bump on a running road surface.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle which is suitable as a traveling wheel of a mobile body. Another object of the present invention is to provide a rotating roller that is effective for preventing noise and noise.

[0005]

SUMMARY OF THE INVENTION A rotary roller according to the present invention has a hub member which is a roller core rotatably supported by a moving body, and a tire member for cushioning is provided on the outer periphery of the hub member. An elastic buffering portion is provided along the joint surface between the inner hub member and the outer tire member to assist the elastic deformation restoration of the tire member from the inside.

In this case, the elastic buffer portion is provided in a spherical or continuous annular shape intermittent along the joint surface between the hub member and the tire member. In addition, sponge rubber or a porous material equivalent thereto can be used as the material of the elastic buffer portion.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a rotary roller according to the present invention will be described in detail with reference to the drawings. FIG.
FIG. 2 is an assembled side sectional view showing a part of the rotating roller 10 according to the first embodiment. A hub member 11, which is a metal or resin roller core formed in a disk shape, has a rotating shaft (not shown) on the center axis of the hub member 11.
There is provided a shaft hole 12 into which the shaft hole fits. Rotating roller 10
Is rotatably supported by the mobile body via the rotating shaft.

A tire member 13 made of urethane rubber or the like is joined to the outer periphery of the hub member 11 by baking or the like. On the inner peripheral surface of the tire member 13 or the inner peripheral surface of the joint peripheral surface with the hub member 11, a spherical elastic buffer portion 1 that is intermittent over the entire circumference and is formed in two or more rows in the hub width direction is provided.
4 are provided. As the material of the elastic buffer portion 14, sponge rubber known as a buffer material effective for absorbing shock is preferably used. As a specific method of intermittently internally molding the elastic buffer portion 14, for example, the following method is used.

Spherical elastic buffer (sponge ball) 1
No. 4 is prepared by inserting a urethane sheet into a ring-shaped foreskin tube 14 a having a diameter enough to wind the urethane sheet around the outer periphery of the hub member 11, one by one. In the case of the illustrated example, in order to form the foreskin tube 14a containing the sponge ball 14 along the joint peripheral surface of the hub member 11, two annular grooves 11a are formed on the joint peripheral surface of the hub member 11. It has been processed. After setting the sponge ball built-in foreskin tube 14a in the annular concave groove 11a, the tire member 13 is molded by casting so as to cover the same.

[0010] A spherical elastic buffer 1 according to the embodiment.
In the case of 4, the size such as volume and shape can be freely set. That is, the tire member 13 on the outer peripheral side and the elastic buffer 14 (or 1
5) can be freely set.

[0011]

According to the above construction, when the rotating roller 10 according to the present invention is stored and allowed to stand after being mounted on the mobile body, the weight of the body and the like acts on the rotating roller 10 so that the outer tire member is provided. The elastic deformation of the outer tire member 13 does not quickly return to the original shape when the use is resumed, but the inner elastic buffer portion 14 (or 15). The elastic deformation is quickly restored to the original shape because of sponge rubber or the like. Due to the rapid restoring force of the inner elastic cushioning portion 14 (or 15), the restoring of the outer tire member 13 is promoted and accelerated. As a result, vibration and noise due to deformation of the tire member 13 during rotation at the stage of resuming use are generated. Can be prevented. In addition, by devising the ratio of the size and shape of the inner elastic buffer portion 14 (or 15), it is possible to supply a roller that can cope with various loads.

[Brief description of the drawings]

FIG. 1 is an assembled side sectional view showing a part of a first embodiment of a rotating roller according to the present invention.

FIG. 2 is an assembled side sectional view showing a part of a conventional rotary roller.

[Explanation of symbols]

 Reference Signs List 10 rotating roller 11 hub member 12 shaft hole 13 tire member 14 spherical elastic buffer (sponge ball) 14a foreskin tube 15 annular elastic buffer

Claims (3)

[Claims] 1. A rotating roller having a hub member which is a roller core rotatably supported by a moving body and having a tire member for cushioning joined to an outer periphery of the hub member. A rotating roller provided with an elastic buffering portion for assisting the elastic deformation restoration of the tire member from the inside along a joint surface between the tire member and the outer tire member. 2. The rotating roller according to claim 1, wherein the elastic buffer portion is provided in a spherical shape intermittent along a joint surface between the hub member and the tire member. 3. The rotating roller according to claim 2, wherein the elastic buffer is formed of a sponge-like substance.