JPH1086609A - Tread replacing type tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To distribute and reduce the stress in a tread ring during usage through the length and width by providing numerous recesses or projections in the entire outer peripheral surface of a tire body and providing recesses and projections corresponding to those in the tire body in the entire inner circumferential surface of the tread ring. SOLUTION: This tire has such structure as preventing a tread ring from deforming in such a way that the tread rings 2, which are fixed in a tire body 1 and outer peripheral surface of the tire body 1, are fixed due to the fitting of the projections 3 and recesses 4, which are fitted to each other. The tread ring 2 can be detached from the tire body 1 by reducing the air pressure in the tire body 1 so that the outer diameter of the tire body 1 becomes smaller than the inner diameter of the tread ring 2 including the projections 4 in the inner surface of the tread ring 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire in which a tread portion of a tire is divided into rings, and the tread portion is replaceable. The present invention relates to a tread having a shape adapted to a road surface condition (snow accumulation, freezing, etc.). Things.

[0002]

2. Description of the Related Art Conventionally, generally used tires have a tire body and a tread portion integrally formed, and a method of mounting a tread ring on the tire body is disclosed in Jpn. 212104.

[0003]

In the case of replacing a general running tire with a snow tire or a studless tire with a conventional integrated tire, the tire and the tire wheel are generally replaced integrally, so that the replacement operation is easy. However, since a replacement tire having a tire wheel mounted on a tire is heavy and bulky, there is a problem in handling such as transportation and storage. In addition, even if only the tread portion is worn, the performance of the tire is greatly reduced, so it is necessary to replace the entire tire, and there is a problem in resource utilization efficiency. In order to solve the above-described problems, the present invention makes it possible to replace a tread portion of a tire, easily replace a tread portion with a tread shape adapted to a road condition, and transport and store the tread portion. It is an object of the present invention to provide a tread replaceable tire that is easy to handle and that can also sufficiently recover a predetermined performance of the tire by replacing the tread portion even with respect to wear of the tread portion. .

Japanese Utility Model Publication No. 46-7762 and Japanese Unexamined Patent Publication No.
Each of 212104 is a method of fixing using a frictional force between the tread ring and the tire main body generated by the air pressure of the tire main body, and reinforcing the breaking force generated in the tread ring during use by a tire cord arrangement method. is there. However, when the circumferential force is repeatedly applied to the tread ring for a long period of time, there is a high possibility that the position of the tread ring is shifted rearward of rotation with respect to the tire main body. The displacement is more likely to occur closer to the edge of the tread ring, and as a result, the stress due to the deformation of the edge of the tread ring is maximized, and the edge of the tread ring is likely to break. Such a phenomenon can be explained mechanically. In order to solve the problems described above, the present invention provides a corresponding projection and recess on the fitting surface of the tire main body and the tread ring, eliminates displacement of the tread ring with respect to the tire main body, prevents deformation, and The purpose of the present invention is to provide a tread replaceable tire that does not cause ring breakage.

[0005]

In order to withstand severe operating conditions caused by the running of an automobile, a large number of depressions or projections (3) are provided uniformly over the entire outer periphery of a tire body (1) in FIG. A projection or depression (4) corresponding to the depression or projection (3) of the tire main body is provided on the entire inner peripheral surface of the ring (2), and the tire main body and the tread ring are shown in FIG.
Combine with the state. The attachment and detachment of the tread ring (2) to and from the tire body (1) is performed by increasing and decreasing the air pressure inside the tire body (1) to increase and decrease the outer diameter of the tire body (1). Due to the arrangement of the tire cords, the tire body (1) has a structure in which expansion and contraction in the circumferential direction is apt to occur on the outer periphery of the tire body with respect to increase and decrease in the internal air pressure, and expansion and contraction in the width direction perpendicular to the circumference hardly occurs. It has. The tread ring has a structure for preventing expansion and contraction in the circumferential direction and in the width direction perpendicular to the circumference by the arrangement of the tire cords. By the above means, the stress generated in the tread ring during use can be dispersed and reduced throughout the tread ring. Furthermore, the fitting combination of the tread ring and the tire main body can be kept in a good state.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to attach and detach a tread ring (2) from a tire main body (1), the air pressure inside the tire main body (1) is reduced to reduce the outer diameter of the tire main body (1) to the tread ring (2). ) The tread ring (2) is attached and detached by making the inner diameter smaller than the inner diameter including the projection (4) on the inner surface.
At the time of mounting, the tire body and the tread ring are aligned so that the projections and depressions on the fitting surface of the tire body and the tread ring are combined, and the air pressure inside the tire body is increased.

[0007]

Embodiments of the present invention will be described below. In the present invention, the tire has a tire body (1) and a tread ring (2).
FIG. 1 shows a state in which the tire body (1) and the tread ring (2) are separated. Tire body (1)
Truncated cones (3) are provided at substantially equal intervals on the entire outer periphery of the tire, and the inner surface of the tread ring (2) fits into and fits with the depression (3) on the truncated cone of the tire body (1). A projection (4) is provided. Figure 2 shows the tire body (1)
2 shows a state in which a tread ring (2) is attached to the outer periphery of the vehicle.
In order to mount the tread ring (2), the reinforcing tire cord (6) that can expand and contract in the circumferential direction of the outer circumference of the tire main body (1) by increasing or decreasing the air pressure of the tire main body (1) in FIG. It has a structure that uses a reinforced tire cord (5) whose outer diameter increases and decreases and which has little expansion and contraction in the width direction perpendicular to the circumferential direction. Further, in order to prevent deformation of the tread ring (2), a width direction perpendicular to the circumferential direction of the tread ring is reinforced with a tire cord (7). Both edges of the tread ring (2) are provided with a convex stepped edge (8) having the same height as the protrusion on the inner surface of the tread ring (2) over the entire circumference, and both edges of the tire body are provided over the entire circumference. A concave stepped edge (9) corresponding to the convex stepped edge (8).

The embodiment shown in FIG. 4 is an application example of a hemispherical surface (a), a truncated pyramid (b), and a semi-cylindrical shape (c) in the shape of the inner surface protrusion of the tread ring. A corresponding depression is provided. In the embodiment shown in FIG. 5, the protrusions on the inner surface of the tread ring are formed by combining belt-like protrusions in a lattice pattern, and a depression corresponding to the belt-like protrusions is provided on the outer periphery of the tire body.

[0009] The tread shape of the outer periphery of the tread ring may be a general running type, a snow tire type for preventing slip, a studless tire type, a spike tire type, or a metal piece on the entire surface of the tread surface, depending on the purpose of use as in the case of conventional tires. Can be diversified, for example, those in which many are arranged at substantially equal intervals.

[0010]

According to the present invention, the displacement between the tire body and the tread ring is eliminated, the deformation of the tread ring is small, and the applied stress is also reduced. Accordingly, the service life of the tread ring is improved, and the thickness of the tread ring can be reduced more than before, so that the running performance can be improved. In addition, the tire performance can be maintained by replacing only the tread ring with respect to the wear of the tread, and the resource saving effect is greater than that of a conventional integrated tire.

[Brief description of the drawings]

FIG. 1 is a perspective view of a separated state of a tire main body and a tread ring.

FIG. 2 is a partial perspective view showing a state in which a tread ring is mounted on a tire body.

FIG. 3 is a sectional view of a tire.

FIG. 4 is a perspective view of a protruding shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tire main body 2 Tread ring 3 Depression 4 Projection 5 Width-inhibited and stretch-resistant tire cord 6 Telescopic tire cord 7 Vertical and horizontal stretch-inhibited tire cord 8 Stepped edge (convex) 9 Stepped edge (concave)

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[Procedure amendment]

[Submission date] December 20, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a perspective view of a separated state of a tire main body and a tread ring.

FIG. 2 is a partial perspective view showing a state in which a tread ring is mounted on a tire body.

FIG. 3 is a sectional view of a tire.

FIG. 4 is a perspective view of a protruding shape.

FIG. 5 is a partial perspective view showing an embodiment of the tire main body.

[Explanation of symbols] 1 Tire main body 2 Tread ring 3 Depression 4 Projection 5 Width-inhibited tire cord 6 Telescopic tire cord 7 Vertical and horizontal stretch-inhibited tire cord 8 Stepped edge (convex) 9 Stepped edge (concave)

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

Claims (2)

[Claims] According to the present invention, a tread portion on an outer periphery of an automobile tire is divided into a ring shape from a tire main body, and the tire main body is moved in a circumferential direction by increasing or decreasing air pressure inside the tire main body. It has a structure that is easy to expand and contract, it is difficult to expand and contract in the lateral direction perpendicular to the circumferential direction,
An exchangeable tread tire in which an outer diameter dimension is increased and decreased by increasing and decreasing air pressure inside a tire body, and a tread ring is detachable from the tire body. 2. The present invention is characterized in that projections or depressions are arranged at substantially equal intervals on the entire outer periphery of the tire main body, and depressions or projections are fitted on the inner surface of the tread ring so as to match the projections or depressions on the outer periphery of the tire main body, The tread ring is reinforced with tire cords to further reduce the circumferential extension of the tread ring and the transverse direction perpendicular thereto.
Tread replaceable tire.