JPH1076807A - Tire of which lateral stiffness is reinforced by wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfy the steering stable performance and the shock absorption performance of a tire by applying a wire having high tensile strength over whole circumference of the inside of the tire in an end part of a tire tread and an end part of a wheel rim which is diagonal to it. SOLUTION: A wire 1 having high tensile strength is stretched over whole circumference of the inside of a tire in an end part B of a tire 2 tread and an end part A of a wheel rim 3 which is diagonal to it. When force F in the longitudinal direction is applied on the tire, the tire 2 is deformed into a shape of a tire 2'. At this time, diagonal distance between point A and point B becomes distance between point A and point B' and becomes shorter. Even if the wire 1 is stretched between point A and point B, the wire is loosened like 1' so that the movement of the tire 2 in the longitudinal direction is not restricted. When force in the horizontal direction is applied, the tire 2 is deformed into a shape of the tire 2'. At this time, diagonal distance between point A and point B attempts to elongate so that it becomes distance between point A and point B', but the wire 1 is not stretched, thereby limiting the movement of the tire 2 in the horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a hollow tire for an automobile or the like which improves steering stability without impairing ride comfort.

[0002]

2. Description of the Related Art In a tire of an automobile or the like, a method of improving ride comfort has been to increase the flatness of the tire to increase the flexibility of the tire. However, when the tire becomes flexible, when a lateral force is applied to the tire, the tire is easily deformed in the lateral direction, and the steering stability is deteriorated.

On the other hand, a method of improving the steering stability has been to increase the rigidity of the tire by reducing the flatness of the tire. However, when the rigidity of the tire increases, the shock absorbing performance decreases, and the ride quality deteriorates.

Conventionally, impact absorption performance and steering stability performance required for tires are contradictory performances due to the rigidity of the tire, and are considered to be incompatible with each other. The way to do it was taken.

[0005]

The impact absorption performance is affected by the longitudinal rigidity of the tire, and the steering stability is affected by the lateral rigidity of the tire. If only the rigidity in the direction can be enhanced, both the shock absorbing performance and the steering stability performance can be satisfied.

[0006]

Means for Solving the Problems An end of a tire tread surface,
A wire with high tensile strength is stretched around the entire circumference inside the tire at the end of the diagonal wheel rim.

[0007] The place where one end of the wire is connected to the end of the tire contact surface is a position slightly shifted upward from the side surface of the tire.

[0008]

When the tire absorbs the impact due to the unevenness of the road surface, the tire is crushed in the vertical direction. In this case, the diagonal distance between the wheel rim and the tire tread becomes short, but the wire is stretched at this diagonal. However, because the wire is loose, it does not restrict this vertical movement.

When a lateral force is applied to the tire, the tire is deformed in the lateral direction. At this time, the diagonal distance between the wheel rim and the tire contact surface tends to be long, but the wire is stretched diagonally. In this case, since the wire does not stretch, the deformation in the lateral direction is suppressed to limit the diagonal stretching.

If the connection position of the wire is shifted upward of the side surface of the tire, and the tire is crushed in the vertical direction, the wire connection position on the side surface of the tire expands in the horizontal direction, so that the wire is too loose. There is no constant state. In addition, when the tire is deformed in the lateral direction, the side of the tire is pulled inward by the wire, the corner of the tire is bent, and the repulsive force when the rubber is bent, the ground contact surface of the tire is pressed against the ground .

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing the internal structure of a tire, and the tire 2 and the wheel rim 3 have the same structure as the conventional one. A wire 1 having a large tensile strength is stretched between diagonal points A and B. Point A is a connection position between the wheel rim and the wire, and a hook-shaped bracket 4 penetrating the side surface of the tire.
Is hooked on the corner of the wheel rim, and one end of the wire is connected to the wheel rim via the metal fitting. Point B is a connection point between the tire and the wire, and is located at a position above the side surface of the corner of the tire contact surface. This wire is stretched inside the entire circumference of the tire as shown in FIG.

The operation of the embodiment of the present invention will be described with reference to the drawings. 3 to 6, a chain line indicates a state in which no force is applied to the tire, and a solid line indicates a state in which a force is applied to the tire and the tire is deformed. FIG. 3 shows the operation of claim 1 in the embodiment of the present invention.
4 to FIG. When a longitudinal force F is applied to the tire as shown in FIG. 3, the tire is deformed from the shape 2 to the shape 2 ′.
At this time, the diagonal distance between point A and point B becomes the distance between point A and point B 'and becomes shorter. Even if a wire such as 1 is stretched between point A and point B, the wire is 1' Therefore, there is no restriction on the vertical movement of the tire.

When a lateral force F is applied to the tire as shown in FIG. 4, the tire is deformed from the shape of 2 to the shape of 2 '. At this time, the diagonal distance between the points A and B is from the point A to the point A. Attempts to stretch like point B ', but if a wire is stretched from point A to point B, the wire will not stretch, thus limiting the lateral movement of the tire.

In the embodiment of the present invention, the operation of claim 2 is shown in FIGS.
Shown in When a vertical force F is applied to the tire as shown in FIG. 5, the tire is deformed from the shape 2 to the shape 2 ′. At this time, the point B spreads in the lateral direction due to the swelling of the side of the tire, and becomes the position of the point B '. Therefore, even if the tire is deformed in the vertical direction, the distance between the points A and B is changed. Is always constant, the wire is not too loose and always stays constant.

As shown in FIG. 6, when a lateral force F is applied to the tire, the tire is deformed from the shape of 2 to the shape of 2 '. Is bent, and the repulsive force at which the rubber is bent at this time generates a force F1 for pressing the ground contact surface against the road surface.

[0016]

As described above, the present invention has the following effects. According to the first aspect, since the wire is stretched diagonally inside the tire, lateral deformation is suppressed, so that steering stability is improved. Further, it is possible to make the tire more flexible while ignoring the influence of steering stability, thereby improving the riding comfort.

According to the second aspect, the connection position between the tire and the wire is slightly shifted upward of the side surface of the tire, so that even if the tire is collapsed in the vertical direction, the wire is not loosened. Even in the state, the wires can suppress the distortion in the lateral direction. In addition, a force that presses the ground contact surface against the road surface is generated by the pulling force of the wire when the tire is deformed in the lateral direction, so that there is also an effect of improving the ground contact force of the tire.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an internal structure of a tire.

FIG. 2 is a cross-sectional view showing the entire structure of the tire.

FIG. 3 is a view showing a state in which the tire is deformed in the vertical direction in the description of the first embodiment.

FIG. 4 is a diagram showing a state in which the tire is deformed in the lateral direction in the description of the first embodiment.

FIG. 5 is a view showing a state in which the tire is deformed in the vertical direction in the description of the second embodiment.

FIG. 6 is a view showing a state in which the tire is deformed in the lateral direction in the description of the second embodiment.

[Explanation of symbols]

 Reference Signs List 1 wire 2 tire 3 wheel rim 4 hook-shaped fitting A connection point between wire and wheel rim B connection point between wire and tire F force applied to tire F1 force pressing ground contact surface against road surface

Claims (2)

[Claims] 1. In a hollow tire of an automobile or the like, a wire having a large tensile strength is stretched around an end of a tire tread surface and an end of a diagonal wheel rim all around the inside of the tire. Tire characterized by enhancing lateral rigidity and improving steering stability. 2. In the above-described method, the position of connecting one end of the wire to the end of the tire tread is slightly shifted above the side surface of the tire to prevent the wire from being loosened and to make the tread into the road surface. A tire characterized by increasing the pressing force.