KR101755915B1

KR101755915B1 - Tire Comprising Foam Space And Method Thereof

Info

Publication number: KR101755915B1
Application number: KR1020150172310A
Authority: KR
Inventors: 성윤경
Original assignee: 성윤경
Priority date: 2015-12-04
Filing date: 2015-12-04
Publication date: 2017-07-10
Also published as: KR20170065931A

Abstract

The present invention relates to a tire including a foam space capable of effectively preventing a user's discomfort due to a puncture or the like due to lack of space due to air pressure and capable of maintaining a ride comfort of the vehicle, and a method of manufacturing the tire.
To this end, a tire including a foaming space according to a feature of the present invention is characterized in that a predetermined foaming space is formed inside the tire due to the foaming effect of the foaming agent, and a predetermined space is formed in the inside of the tire by using silicone, natural rubber, synthetic rubber, polyurethane, An elastomer (polyurethane elastomer) and a thermoplastic polyurethane (polyurethane).
As a result, it is possible to effectively prevent the puncture problem while maintaining stability in terms of vehicle operation as compared with a tire held by air pressure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire including a foamed space,

The present invention relates to a tire including a foaming space and a method of manufacturing the same, and a tire manufactured by injecting a gas or the like with a foaming agent during the molding of a tire so that a foaming space is formed inside the tire, and a method for producing the same.

2. Description of the Related Art Generally, an axle of a vehicle running on a road is provided with a wheel that is rotated by receiving a driving force generated when the engine is driven. The wheel is provided with a tire that supports the load of the vehicle, mitigates the impact generated from the road surface, and transmits the power, braking force, and steering force of the engine to the road surface to maintain the motion of the vehicle. It is divided into a tubular tire with a built-in tube and a tubeless tire without a tube.

On the other hand, when a puncture or tearing occurs in a vehicle, such a tire suddenly loses its balance and steering ability, causing a collision accident or overturning to cause a large accident. In other words, if a puncture occurs, the vehicle suddenly moves to the area where the puncture occurred, causing a standing wave phenomenon that the rear of the tire shakes like a wave, which not only hinders the ride of the vehicle but also increases the frictional heat of the tire, Which may cause additional accidents such as the second or third accident, thereby hindering the safe driving of the driver.

In order to prevent this, a tire in which silica as a liquid adhesive is injected into a tire has been developed. However, it can be prevented from puncturing a nail or a piece having a diameter of 7 mm or less, but it is effective for a pit or a bar having a diameter of 7 mm or more And there is a problem that the risk of puncture still exists on the side of the tire as it is applied only to the side where the tread comes into contact with the ground.

In addition, when a plate-like object such as a steel plate or a knife, which is not a cylindrical shape like a nail, is stuck to a tire, there is a problem that silica leaks and the tire must be replaced each time. On the other hand, airless tires composed of honeycomb hexagons have been developed, however, there is a problem in that there is no practicality because of high noise and vibration during high speed driving. Therefore, in order to solve the above-mentioned problems, research and development are under way, and the following technologies are disclosed as related prior arts.

In the first prior art, when a tire is installed at both ends of an axle which is installed below the vehicle body and transmits power of the vehicle, a rim is provided at the center of the tire, and the rim is formed on the outer periphery of the tire, And a plurality of protrusions are formed on the outer periphery of the elastic portion to form a recessed portion corresponding to the elasticity portion on the outer surface of the elastic portion. And the elastic portions are formed so as to form air bubbles in an independent state, and the tread portion is joined to the outer periphery of the elastic portions.

However, in the case of the above-mentioned prior art, when the nail, the reinforcing steel or the steel plate is stuck, the air of the bubble in the relevant portion is released, and when the tread portion of the tire is grounded, the pressure is weak, There is a problem that the tire can not be moved at high speed due to shaking or bouncing, and the tire must be replaced every time the nails, the reinforcing bars, and the steel plates are stuck.

Korean Patent Publication No. 10-2002-0031991

In order to solve the above problems, the present invention provides a tire including a foam space capable of effectively preventing a user's discomfort due to a puncture or the like due to lack of space due to air pressure, And a manufacturing method thereof.

According to an aspect of the present invention, there is provided a tire including a foaming space, wherein a predetermined foaming space is formed by the foaming effect of the foaming agent in the tire, and the foaming agent is selected from the group consisting of silicone, natural rubber, synthetic rubber, polyurethane, , A polyurethane elastomer, and a thermoplastic polyurethane.

Further, a predetermined gas or bubble is contained in the foam space.

The first layer may include a first layer including the foamed space and a second layer formed between the first layer and the wheel. The second layer may be formed of a gas layer including air or a predetermined gas therein .

And a shock absorber provided between the outer circumferential surface and the inner circumferential surface of the tire for supporting the outer circumferential surface and the inner circumferential surface of the tire and absorbing the pressure and impact applied to the outer circumferential surface and having an elastic force.

A method of manufacturing a tire including a foaming space according to an embodiment of the present invention includes the steps of forming at least one of silicon, natural rubber, synthetic rubber, polyurethane, polyurethane elastomer and thermoplastic polyurethane ; Adding a foaming agent to the material and melting the molten material, and injecting the molten material into a tire shape.

According to another aspect of the present invention, there is provided a method of manufacturing a tire including a foamed space, the method comprising the steps of: preparing a tire including a foamed space including one of silicone, natural rubber, synthetic rubber, polyurethane, polyurethane elastomer and thermoplastic polyurethane Or more; Injecting a predetermined gas while melting the material; and injecting and molding the molten material into a tire shape including a foaming space.

According to another aspect of the present invention, there is provided a method of manufacturing a tire including a foaming space, comprising the steps of: forming a second layer between a first layer of a tire- Further comprising the step of installing at least one shock absorbing device between the outer circumferential surface and the inner circumferential surface of one layer and having an elastic force absorbing pressure and shock applied to the outer circumferential surface of the tire and supporting the outer circumferential surface and the inner circumferential surface of the tire, Is formed of a gas layer containing air or a predetermined gas therein.

According to the above-described structure, it is possible to effectively prevent the puncture problem while maintaining the stability in terms of the vehicle running as compared with the tire held by the air pressure.

In addition, a predetermined support structure may be additionally provided inside the tire to improve the stability and ride comfort of the tire.

In addition, the air layer may be further formed inside the tire so as to have a higher impact absorbing capability.

1 is a schematic view showing a predetermined foaming space formed in a tire including a foaming space according to an embodiment of the present invention.
2 is a cross-sectional perspective view showing a predetermined foaming space formed in a tire including a foaming space according to an embodiment of the present invention.
3 is a schematic view showing a configuration of a tire including a foaming space according to an embodiment of the present invention.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations can be applied and various embodiments can be made. It is to be understood that the following description covers all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In the following description, the terms first, second, and the like are used to describe various components and are not limited to their own meaning, and are used only for the purpose of distinguishing one component from another component.

Like reference numerals used throughout the specification denote like elements.

As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms " comprising, "" comprising, "or" having ", and the like are intended to designate the presence of stated features, integers, And should not be construed to preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3 attached hereto.

FIG. 1 is a schematic view showing a predetermined foaming space formed in a tire including a foaming space according to an embodiment of the present invention. FIG. 2 is a perspective view of a predetermined foaming space formed in a tire including a foaming space according to an embodiment of the present invention. Fig. 3 is a schematic view showing a configuration of a tire including a foaming space according to an embodiment of the present invention. Fig.

First, a tire including a foaming space according to an embodiment of the present invention will be described in detail below with reference to Figs. 1 and 2. Fig.

As shown in FIG. 1, a tire including a foaming space according to an embodiment of the present invention has a shape to enclose a wheel, and a predetermined foaming space may be formed in the inside of the tire.

The predetermined foaming space may be a chemical added to the tire material as a foaming agent due to the effect of the foaming agent in the tire manufacturing process, and the foaming agent may be replaced by injection of a predetermined gas.

As shown in FIG. 1, a plurality of foam spaces 20 may be formed in the tire 10, and a predetermined gas may be introduced into the foam space or may be in a vacuum state. The existence of gas in the foam space is due to the random foaming effect.

The foamed space 20 performs buffering action when the vehicle is running, and is characterized in that the degree of damage to the tire is small compared to the conventional air tube method when a puncture occurs in the tire (damage to the tire due to nails or glass). In other words, even if the inside of the tire is damaged due to nails or glass, the volume of the entire tire is not reduced, and the vehicle can be operated stably. Therefore, it has a considerable advantage over the conventional tube type tire.

Also, as shown in FIG. 2, one surface of the tire including the foam space according to the embodiment of the present invention can be seen that a plurality of foam spaces 20 are formed.

Further, the foaming space formed inside the tire is formed by the foaming agent or the injection gas added at the time of manufacturing the tire. The tire 10 including the foaming space according to the embodiment of the present invention adopts a structure in which the inner circumferential surface thereof is coupled to the wheel wheel 30. [ That is, the tire 10 having the foamed space is formed such that the inner circumferential surface of the tire 10 can be engaged with the wheel 30 so as to be coupled to the wheel 30.

The tire 10 including a foaming space according to an embodiment of the present invention may be formed of any one of silicone, natural rubber, synthetic rubber, polyurethane, polyurethane elastomer, thermoplastic polyurethane, EVA (ethylene vinyl acetate) and PE (polyethylene).

That is, the urethane-based materials and EVA among the above materials have basically foam performance. Due to the foaming performance, foaming occurs during the manufacture of the tire, and a foaming space is formed inside the tire 10.

If using only natural rubber as a material, not a foamable material, add a foaming agent. That is, a foaming agent capable of foaming at a predetermined ratio can be added. The contents of the foaming agent are well known and will not be described below.

Next, a tire including a foaming space according to another embodiment of the present invention will be described below with reference to Fig.

As shown in FIG. 3, the tire including the foaming space according to another embodiment of the present invention may further include the base layer 40 or the shock absorbing device 50 in the basic embodiment.

That is, when a portion of the tire including the foamed space is referred to as a first layer, an additional second layer may be provided between the first layer portion and the wheel 30. [ The second layer may be in the form of a gas layer containing air or a predetermined gas therein.

The role of the second layer is to stably maintain the overall elasticity of the tire 10. That is, since foaming may not occur uniformly in the process of forming the first layer portion, a second layer may be formed between the first layer and the wheel 30 as a complementary measure when the foaming does not occur effectively.

The second layer may be formed of one or a plurality of base layers. If the second layer is formed of a plurality of base layers, the base layer may be formed and arranged in the following manner. That is, the arrangement of the gas layer formed toward the center of the wheel can be arranged so that the buffering degree is low. The low pressure of the gas layer is disposed far from the center of the wheel, and the high pressure of the gas layer may be disposed on the wheel 30 side of the center of the wheel.

With the arrangement as described above, it is possible to prevent the impact generated from the outside of the tire 10 from being directly transmitted to the vehicle, and even if a large nail or glass enters the inside of the tire 10, 10) may be less susceptible to damage.

3, a shock absorber 50 may be additionally provided inside the tire 10 including the foaming space according to another embodiment of the present invention.

The shock absorber 50 may be provided between the outer circumferential surface and the inner circumferential surface of the tire 10 to support the tire circumferential surface and the inner circumferential surface and have a resilient force to absorb the pressure and impact applied to the circumferential surface.

Here, the shock absorber 50 is applicable to any type having elastic force. That is, it may be formed of a spring structure having an elastic force or an elastic body made of rubber.

3, the shock absorbing device 50 can be installed in a bellows type. Since the shock absorbing device 50 can be easily installed inside the tire 10 and the risk of breakage is low, The present invention is not limited thereto.

In addition, although FIG. 3 shows that one shock absorber 50 is installed, a plurality of shock absorbers 50 may be installed as needed. In the case where a plurality of shock absorbers 50 are provided, the angle of 360 degrees is set in consideration of the characteristics of the circular tire 10 (shock relief must be uniform throughout the tire) It is preferable to divide the number of light emitting diodes by a certain angle.

For example, when four shock absorbers 50 are installed inside the tire 10, four shock absorbers 50 may be disposed at 90 degree intervals.

Finally, a method of manufacturing a tire including a foaming space according to an embodiment of the present invention will be described.

A method of manufacturing a tire including a foaming space according to an embodiment of the present invention includes the steps of forming at least one of silicon, natural rubber, synthetic rubber, polyurethane, polyurethane elastomer and thermoplastic polyurethane , Adding a foaming agent to the material and melting the molten material, and injecting the molten material into a tire shape.

According to another aspect of the present invention, there is provided a method of manufacturing a tire including a foamed space, the method comprising the steps of: preparing a tire including a foamed space including one of silicone, natural rubber, synthetic rubber, polyurethane, polyurethane elastomer and thermoplastic polyurethane Or more of the molten material is injected with a predetermined gas while melting the material, and injecting the molten material into a tire shape including a foaming space.

In addition, in the above two embodiments, the following two steps may be additionally performed.

That is, the method includes: forming a second layer between a first layer of a tire shape including a foaming space and a wheel; supporting the outer and inner circumferential surfaces of the tire between an outer circumferential surface and an inner circumferential surface of the first layer; And installing at least one shock absorbing device having an elastic force for absorbing a pressure and an impact applied to the outer circumferential surface.

Here, the second layer may be formed as a gas layer containing air or a predetermined gas therein.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

10: Tire 20: Foam space
30: Wheel 40: Base layer
50: Shock absorber

Claims

A predetermined foaming space due to the foaming effect of the foaming agent is formed inside the tire,
And at least one of silicone, natural rubber, synthetic rubber, polyurethane, polyurethane elastomer and thermoplastic polyurethane ,
Further comprising a second layer formed between a first layer including the foaming space and a wheel,
Wherein the second layer includes a plurality of gas layers including air or a predetermined gas therein,
Wherein the plurality of gas layers have different pressures, and a gas layer having a lower pressure is disposed as the distance from the center of the wheel is increased .

The method according to claim 1,
Wherein the foaming space includes a predetermined gas or air bubbles.

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The method according to claim 1 ,
And a shock absorber provided between the outer circumferential surface and the inner circumferential surface of the tire for supporting the outer circumferential surface and the inner circumferential surface of the tire and absorbing the pressure and impact applied to the outer circumferential surface and having an elastic force. .

Preparing at least one of silicone, natural rubber, synthetic rubber, polyurethane, polyurethane elastomer and thermoplastic polyurethane;
Adding a foaming agent to the material and melting or injecting a predetermined gas while melting the material, and
And molding the molten material by injection molding to produce a tire shape including a foaming space ,
Forming a second layer between the wheel and a first layer of a tire-like shape including the foamed space;
Installing at least one shock absorbing device between the outer circumferential surface and the inner circumferential surface of the first layer and supporting the outer circumferential surface and the inner circumferential surface of the tire and having an elastic force absorbing pressure and shock applied to the outer circumferential surface;
Wherein a plurality of gas layers including air or a predetermined gas are formed in the second layer, wherein the plurality of gas layers have different pressures, and a gas layer having a lower pressure is arranged to be disposed farther from the center of the wheel The method comprising the steps of: (a) providing a foam space having a foam space;

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