KR101670585B1

KR101670585B1 - Non-Pneumatic Tire

Info

Publication number: KR101670585B1
Application number: KR1020150050763A
Authority: KR
Inventors: 최일호
Original assignee: 최일호
Priority date: 2015-04-10
Filing date: 2015-04-10
Publication date: 2016-10-28
Also published as: KR20160121158A

Abstract

The non-pneumatic tire according to the present invention is characterized in that a cylindrical tube having an elliptical tube installed between the inner and outer cylindrical members is formed in contact with each other and is integrally formed or an end of the tire tread is formed with an engaging groove, It is possible to replace it with pneumatic tires because there is no fear of air leakage even when it is stored for a long time and it can be used as a pneumatic tire with a certain level or more It is possible to prevent a safety accident such as an overturning accident while driving.

Description

[0001] Non-Pneumatic Tire [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-pneumatic tire, and more particularly, to an un-pneumatic tire which comprises an elliptical tube or an arc tube provided between inner and outer cylindrical members of a non- The present invention relates to a non-pneumatic tire which can be used in place of an air-pressure tire in an emergency by providing an engaging groove and engaging projections formed at other ends to engage with each other and having a load-bearing property similar to that of an air-pressure tire,

The wheels are made of a wheel, a rubber material or the like for mounting on a wheel shaft of a vehicle or the like, and a tire mounted on the wheel to constitute the outer portion of the wheel so as to mitigate the impact from the road surface. Conventional tires used in vehicles can be classified into radial tires, bias tires, solid tires, and the like depending on the structure.

Among them, radial tires, that is, pneumatic tires with air inside are generally used for automobiles and special purpose automobiles. However, such pneumatic tires are complicated in structure, the manufacturing process is very complicated, and there is a problem that the emission of harmful substances is high during manufacture, and the inconvenience of management that the air pressure, which is absolutely important for performance, must be checked from time to time, The air pressure is suddenly lowered, so that there is always a problem of stability in which a tire is broken and an accident is caused.

Accordingly, a non-pneumatic tire that does not use air pressure, i.e., an airless tire, is proposed as a new alternative. Unlike pneumatic tires, non-pneumatic tires are a process and structure tires that can greatly reduce the production cost by simplifying the material and the process, as well as significantly reduce the emission of harmful substances. Particularly, the non-pneumatic tire has a great advantage of being able to escape from problems that may be caused by a lack of air pressure and the like. The non-pneumatic tires are capable of preventing the standing wave from being generated in pneumatic tires and have the advantage of greatly improving the rolling resistance. Unlike pneumatic tires, non-pneumatic tires have a design method that does not use compressed air at all, thus eliminating the risk of accidents that may occur during travel due to air pressure loss or flat tires.

In general, most non-pneumatic tires absorb the impact from the road surface using the elasticity of the circular band and the web spokes, and support the load of the vehicle using a web spoke structure. If the vehicle suddenly stops while traveling at high speed, the tire may be severely crushed or warped due to inertia, resulting in a phenomenon such as a puncture of the tire, which may cause a safety accident such as overturning of the vehicle.

In addition, the pneumatic tire is able to maintain the original state of the pneumatic tire even when an external force is applied to the pneumatic tire by dispersing the external force thereof. On the other hand, in the case of the non-pneumatic tire, when an external force such as passing through an obstacle is received, Because I do it, I can keep the original prototype state unchanged and it can be done unilaterally. When the non-pneumatic tire can not maintain the shape of the circular shape and receives the external force and has a distorted non-circular shape, the running property is deteriorated as well as the speed is lowered and the fuel consumption is inevitably deteriorated. Therefore, the development of a non-pneumatic tire that improves the disadvantages of such a non-pneumatic tire is urgently required.

On the other hand, spare tires (aka spare tires), which are kept in the trunk of a vehicle until a puncture or a sudden tire accident occurs, must be lightweight for the fuel economy of the vehicle, occupy a small area in the trunk, Even if it is stored for a long period of time, the air should not escape, so that it can function as an auxiliary tire in an emergency.

However, since the auxiliary tires currently used in passenger cars are mostly pneumatic tires, there are restrictions on their use in view of the required characteristics of the auxiliary tires.

Therefore, it is urgent to develop a non-pneumatic tire that is less lighter than the pneumatic auxiliary tire and occupies less area, without fear of air leakage even when stored for a long time, and there is no fear of tire puncture due to dangerous materials on the road surface.

Accordingly, the present inventors have found that when an external force is applied to a non-pneumatic tire, it is possible to provide a non-pneumatic tire which is less lighter than a pneumatic auxiliary tire and has a problem of being distorted without being maintained in a circular state, As a result of an effort, the spoke member provided between the inner and outer cylindrical members of the tire is formed by contacting the circular tubes having the elliptical tube embedded therein as viewed from the center of the tire in the axial direction, one end of the tire tread is formed with a coupling groove, The non-pneumatic tire formed with the engagement protrusions to be engaged with the ends is prevented from being crushed or warped beyond a predetermined level when an external force is applied, and is free from air leakage even when stored for a long time, The present invention has been completed .

An object of the present invention is to provide a non-pneumatic tire capable of preventing a safety accident such as an overturning accident while driving by preventing a tire from being crushed or bent to a certain level or higher even if the tire is crushed or warped according to the bending or self- have.

Another object of the present invention is to provide a non-pneumatic tire which is free from the risk of air leakage even when stored for a long period of time, is free from the risk of tire puncture due to dangerous materials on the road surface, and is lighter than the pneumatic auxiliary tire and occupies less area.

In order to attain the above object, the present invention provides an automotive vehicle comprising an outer cylindrical member having a tire tread portion, an inner cylindrical member connected to a wheel axis of the vehicle, And a plurality of spoke members provided to connect between the cylindrical members (20), wherein the inner and outer cylindrical members (10, 20) have a certain width in the axial direction, Pneumatic tire (100) supporting a grounding load only by members, wherein the spoke member provided between the inner and outer cylindrical members (10, 20) comprises an elliptical tube (42) or an arcuate tube (40-1) having a built-in pipe (42-1) are formed in contact with each other.

The non-pneumatic tire according to the present invention can prevent the tire from being crushed or bent to a certain level or higher even if the tire is crushed or warped according to the bending or self-load of the road surface, thereby preventing a safety accident such as a rollover during traveling.

In addition, there is no fear of air leakage even when stored for a long time, there is no fear of tire puncture due to dangerous materials on the road surface, and it is lighter than the pneumatic auxiliary tire and occupies less area.

1 is a front view of a non-pneumatic tire showing a structure in which an elliptical pipe is formed in a round pipe according to an embodiment of the present invention.
2 is a front view of a non-pneumatic tire showing a structure in which an arched tube is formed in a round tube according to another embodiment of the present invention.
3 is a cross-sectional view showing an outer surface of a non-pneumatic tire according to an embodiment of the present invention.
4 is a cross-sectional view illustrating an inner surface of a tire tread according to an embodiment of the present invention.
5 is a cross-sectional view of a non-pneumatic tire tread according to an embodiment of the present invention.
6 is a front view showing a structure in which an elliptical tube is formed in a circular tube built in a non-pneumatic tire according to an embodiment of the present invention.
7 is a front view showing a structure in which an elliptical tube is formed in a circular tube built in a non-pneumatic tire according to an embodiment of the present invention.
8 is a perspective view showing an elliptical tube formed in a circular tube built in a non-pneumatic tire according to an embodiment of the present invention.
FIG. 9 is a perspective view showing an arched tube formed in a circular tube built in a non-pneumatic tire according to another embodiment of the present invention.

In the present invention, the spoke member provided between the inner and outer cylindrical members of the tire is formed by contacting the elliptical tube 42 or the circular tube 40 having the arched tube 42-1, viewed from the axial center of the tire, Pneumatic tire in which an engagement groove is formed at one end of the tire tread and a coupling protrusion is formed at the other end to be engaged with each other is prevented from being collapsed or bent to a certain level or more when an external force is applied, And that it is lighter and less bulky than pneumatic auxiliary tires.

In the present invention, the spoke members provided between the inner and outer cylindrical members 10 and 20 of the tire are formed by contacting the circular tubes 40 having the elliptical tube 42 embedded therein as viewed from the tire center in the axial direction, The tire tread has a non-pneumatic tire in which an engaging groove is formed at one end and an engaging projection is formed at the other end to engage with each other.

The non-pneumatic tire having the above-described structure can prevent the tire from being crushed or bent to a certain level or higher even if the tire is crushed or warped according to the bending of the road surface or self-load, There is no fear of air leakage at the time of storage, and there is no fear of tire puncture due to dangerous materials on the road surface, and it is confirmed that it is lighter than the pneumatic auxiliary tire and occupies less area.

Therefore, in one aspect of the present invention, an outer cylindrical member 10 having a tire tread 30, an inner cylindrical member 20 connected to a wheel axis of the vehicle, and an outer cylindrical member 10, (20), wherein the inner and outer cylindrical members have a constant width in the axial direction and support the ground load only at regular intervals of spoke members circumferentially connected between the inner and outer cylindrical members In the non-pneumatic tire (100), the spoke member provided between the inner and outer cylindrical members (10, 20) includes an elliptical tube (42) or an arched tube (40) are formed in contact with each other.

Hereinafter, a non-pneumatic tire according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show a front view of a non-pneumatic tire showing a structure in which an elliptical pipe 42 or an arched pipe 42-1 is formed in a round pipe according to the present invention.

The non-pneumatic tire according to the present invention comprises an outer cylindrical member 10 provided with a tire tread 30, an inner cylindrical member 20 connected to a wheel axis of the vehicle, and an outer cylindrical member 10, (20), wherein the inner and outer cylindrical members have a constant width in the axial direction and support the ground load only at regular intervals of spoke members circumferentially connected between the inner and outer cylindrical members In the non-pneumatic tire (100), the spoke member provided between the inner and outer cylindrical members (10, 20) has an elliptical tube (42) or an arched tube The cylindrical tubes 40 are formed in contact with each other.

The elliptical tube 42 or the arcuate tube 42-1 is inserted into the circular tube 40 according to the size of the circular tube 40 or the arched tube 42-1 and one or more, 10 to 10, and the size can be variously varied from 1 to 100 mm in diameter as needed.

7 to 9, an elliptical tube 42 or an arched tube 42-1 is formed in the circular tube 40 according to the width of the tire, and an elliptical tube 42 or an arcuate tube 42 1 to 10 elliptical tube 42 or arcuate tube 42-1 in the form of forming a plurality of elliptic tubes 42-1, Depending on the size of the circular tube 40 in which the elliptical tube 42 or the arcuate tube 42-1 is built, one or more layers, preferably 1 to 50 layers, and more preferably 2 to 50 layers are formed Can be made. According to an embodiment of the present invention, an arcuate tube may be formed in the semicircular tube or an arcuate tube may be formed in the arcuate tube.

In the case of forming the arched tube, as shown in Fig. 9, the bottom ground surface is formed to conform to the spoke-member cylindrical surface in contact with the curved surface.

In the non-pneumatic tire according to the present invention, one end of the tire tread 30 is formed with an engaging groove, and the other end is formed with engaging projections to engage with each other. In other words, as shown in FIG. 5, the tire pneumatic tires according to the present invention may have an engagement groove formed at one end of the tire tread 30 and an engagement protrusion at the other end to be engaged with each other. &Lt; / RTI >

As shown in Fig. 5, one portion of the circular tire tread 30 is cut, and the cut end surfaces are formed with concave and convex portions 31, 32 so as to mesh with each other. The thus formed tire tread 30 is spread in the right and left directions and fitted to the non-pneumatic tire, and the ends of the tire tread 30 having the unevenness are engaged with each other, and the ends of the tire tread 30 are bonded with adhesive. The tire tread 30 can be replaced and used when it is worn as a consumable type.

The nano protrusions 70, the groove portions 60 and the protrusions 50 are formed on the outer surface 30-1 of the non-pneumatic tire, and the nano protrusions 70 ', 70' corresponding to the inner surfaces of the tire tread 30-2, A groove portion 60 'and a protrusion portion 50' are formed. That is, the irregular portions formed on the tire outer surface 30-1 and the tire outer surface 30-2 of the non-pneumatic tire are structured so as to be integrated with each other (FIG. 6).

3, the tire tread has nano protrusions 70 formed at predetermined intervals in a predetermined pattern, and on the inner circumferential surface of a tread portion corresponding to a space portion formed between the outer cylindrical member 10 and the spoke member, A tread portion 60 may be formed on the inner circumferential surface of the tread portion corresponding to a portion where the outer cylindrical member 10 and the spoke member are in contact with each other, And a nano-protrusion 70 'groove portion 60' and a protrusion 50 'are formed to be coupled to the inner circumferential surface (FIG. 4).

Here, the protrusions 50 and 50 'and the grooves 60 and 60' having a predetermined pattern may be formed in various shapes. For example, the protrusions 50 and 50 'and the grooves 60 and 60' are formed in a substantially circular or polygonal shape in cross section on the inner circumferential surface of the outer cylindrical member 10, . The protruding portions 50 and 50 'and the groove portions 60 and 60' are formed in a polygonal shape such as arc, semicircle or triangle in cross section on a plane perpendicular to the central axis of the non-pneumatic tire, And the like.

In the tread rubber pattern of the non-pneumatic tire according to the present invention, protrusions 50 and 50 'are formed in a tread corresponding to a space portion formed between the outer cylindrical member 10 and the spoke member, and the outer cylindrical member 10 and the tread portion corresponding to the portion where the spoke member is in contact with the groove portion 60, 60 ', thereby making the grounding pressure applied to the tread ground surface uniform.

The tread portion of the non-pneumatic tire may be manufactured by using at least one member selected from the group consisting of natural rubber and synthetic rubber, or by further adding ceramic particles having a nano or micro particle size, Can be produced using at least one member selected from the group consisting of polyurethane, natural and synthetic rubbers of dienes, polyester fibers, Kevlar fibers, waste nonwoven fibers, polyurethane resin thermoplastic resins and carbon fibers.

As described above, according to the present embodiment, even if an external force is applied, a circular shape which is the original shape of the tire can be maintained as it is against the external force, so that the phenomenon that the running property is lowered and the speed is lowered can be reduced, It is possible to improve ride comfort and improve fuel economy.

In addition, even if the tire is bent or warped according to the bending of the road surface or its own load, it is prevented from being crushed or bent to a certain level or more, thereby preventing safety accidents such as overturning while driving, There is no fear of tire puncture due to dangerous materials on the road, and it is lighter than the pneumatic auxiliary tire and occupies less area.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, those skilled in the art will appreciate that such specific embodiments are merely preferred embodiments and that the scope of the present invention is not limited thereby. something to do. It is therefore intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

100: Non-pneumatic tires
10: outer cylindrical member 20: inner cylindrical member
30: tire tread 30-1: non-pneumatic tire outer diameter surface
30-2: tire tread inner diameter surface 31: tread end inner diameter surface
32: Tread end outer surface 40: Cylindrical tube
42: elliptical tube 42-1: arched tube
50, 50 ': projections 60, 60': tread grooves
70, 70 ': nano protrusions

Claims

An internal combustion engine comprising an outer cylindrical member (10) having a tire tread portion, an inner cylindrical member (20) connected to the wheel axle of the vehicle, and a plurality of spokes (20) provided to connect between the outer cylindrical member Pneumatic tire (100) having an inner and outer cylindrical members (10, 20) having a certain width in the axle direction and supporting a ground load only by spoke members spaced from each other in a circumferential direction As a result,
The spoke member provided between the inner and outer cylindrical members 10 and 20 has a cylindrical tube 40 or an arched tube 42-1 having an elliptical tube 42 embedded therein as viewed from the axial center of the tire, Arched tubes are formed in contact with each other,
The tire tread portion has nano protrusions 70 formed in a predetermined pattern and protrusions 50 are arranged in a predetermined pattern on the inner circumferential surface of the tire tread portion corresponding to a space portion formed between the outer cylindrical member and the spoke member, A groove portion 60 is formed on an inner circumferential surface of the tire tread portion corresponding to a portion where the cylindrical member and the spoke member are in contact with each other, a nano-protrusion 70 'formed on the outer surface of the non-pneumatic tire so as to be coupled to the inner circumferential surface of the tread, &Apos;'' and a projection 50 '.

The tire according to claim 1, wherein the nano protrusion (70), protrusion (50), and groove (60) formed in a predetermined pattern on the inner circumferential surface of the tire tread portion Wherein the tire is a tire.

The non-pneumatic tire according to claim 1, wherein at least one or more arcuate tubes in the elliptical tube (42) or the arcuate tube (42-1) in the cylindrical tube (40) are formed.

The tire according to claim 1, wherein the nano protrusion (70 '), the groove (60') and the protrusion (50 ') formed in a predetermined pattern on the outer surface of the outer cylindrical member (10) And the second pneumatic tire.

The non-pneumatic tire according to claim 1, wherein the circular tube (40) with the elliptical tube (42) or the arched tube with the arcuate tube (42-1) is formed in one or more layers.

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The non-pneumatic tire according to claim 1, wherein the tread portion of the non-pneumatic tire is at least one selected from the group consisting of natural rubber and synthetic rubber, or further added with ceramic particles.

The tire of claim 1, wherein the body of the non-pneumatic tire is selected from the group consisting of polyurethane, natural and synthetic rubbers of dienes, polyester fibers, Kevlar fibers, woven silk fibers, polyurethane resins, thermoplastic resins and carbon fibers Characterized in that at least one of the tire and the tire is used.