KR20220169287A - Tire - Google Patents

Abstract

According to one embodiment of the present invention, a tire comprises: a tread extended in a circumferential direction of the tire; and a rim disposed inside the tread. An inner liner is disposed on an inner surface of the tread, and a conduction unit connected to the rim is disposed on an inner surface of the inner liner.

Description

tire {TIRE}

Embodiments of the present invention relate to tires.

Technologies for ensuring the safety of vehicle drivers and helping driving convenience include vehicle radars, tire pressure sensing devices, remote starting devices, geographic information systems, and the like.

On the other hand, since the tire transmits the driving force and braking force of the vehicle to the ground and performs functions such as mitigating impact on the road surface, the state of the tire is directly related to the driver's safety.

To this end, it is necessary to continuously monitor the condition of the tires while driving. For example, the tire air pressure sensing device may measure tire pressure and temperature from a tire air pressure sensor (TPMS) mounted on a wheel and notify the user of the pressure and temperature, thereby preventing tire defects in advance.

In a tire, the inner liner is a component capable of increasing durability performance by maintaining air pressure inside the tire for a long period of time. In this case, the inner liner is usually formed of a non-conductive material, includes a rubber composition for preventing static electricity, and may be formed in a structure for maintaining air permeability.

Static electricity may be stored in the tire tread during driving, and in order to discharge such static electricity to the outside, conventionally, chimneys in contact with the ground are disposed on the tread so that static electricity of the tread can be discharged to the outside of the tire through the chimney.

However, in the case of a tire disposed in an electric vehicle, generated static electricity can be used as electrical energy, so a structure for storing static electricity generated in the tread and inner liner and using it as electrical energy may be required.

An object of the tire according to an embodiment of the present invention is to provide a tire including a structure for storing static electricity generated in a tread and an inner liner while maintaining air permeability of the inner liner.

However, these problems are exemplary, and the problem to be solved by the present invention is not limited thereto.

A tire according to an embodiment of the present invention includes a tread extending in a circumferential direction of the tire; and a rim disposed inside the tread, an inner liner disposed on an inner surface of the tread, and a conductive portion connected to the rim disposed on an inner surface of the inner liner.

In the tire according to an embodiment of the present invention, the conductive portion may be coated on an inner surface of the inner liner.

In the tire according to an embodiment of the present invention, the conductive portion may be coated on the inner surface of the inner liner with a spray.

In the tire according to an embodiment of the present invention, the conductive portion may be connected to the rim through an inner surface of the bead portion.

In the tire according to one embodiment of the present invention, the conductive portion may be formed in a mesh shape.

In the tire according to an embodiment of the present invention, the conductive portion may be manufactured by 3D printing.

The tire according to an embodiment of the present invention may further include a chimney portion disposed inside the tread to be spaced apart from the tread surface, and the chimney portion may be connected to the conductive portion.

The tire according to an embodiment of the present invention may further include a thermoelectric element part disposed inside the tread, and the thermoelectric element part may be connected to the chimney part.

The tire according to an embodiment of the present invention may further include a piezoelectric element part disposed inside the tread, and the piezoelectric element part may be connected to the chimney part.

The tire according to one embodiment of the present invention may further include a tire air pressure sensor unit disposed inside the tread, and the tire air pressure sensor unit may be connected to the chimney unit.

Other aspects, features, and advantages other than those described above will become clear from the detailed description, claims, and drawings for carrying out the invention below.

The tire according to one embodiment of the present invention maintains air permeability of the inner liner by applying a conductive inner liner film, and can be used as a tire for an electric vehicle by storing static electricity with a rim capable of storing electricity.

In addition, in the tire according to another embodiment of the present invention, electric energy can be additionally secured by mounting a thermoelectric element that converts heat generated from the tire into electric energy while the vehicle is running and connecting it to the chimney part.

In addition, in the tire according to another embodiment of the present invention, electric energy can be additionally secured by mounting a piezoelectric element on the tread part and connecting it to the chimney part for converting pressure generated from the tire into electric energy while the vehicle is running.

In addition, the tire according to another embodiment of the present invention may drive the tire air pressure sensor by using static electricity generated in the tire while driving the vehicle.

1 is a view showing a vehicle equipped with a tire according to an embodiment of the present invention.
2 is a perspective view showing a tire according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of the inside of a tire equipped with a conduction unit according to an embodiment of the present invention, which is AA′ of FIG. 2 .
FIG. 4 is part B of FIG. 3 and is a view showing a view of a surface of a conductive part according to an embodiment of the present invention.
5 is a cross-sectional view of a tire in which a thermoelectric element unit is disposed according to another embodiment of the present invention, which is part C of FIG. 3 .
6 is a cross-sectional view of a tire in which a piezoelectric element unit is disposed according to another embodiment of the present invention, which is part C of FIG. 3 .
7 is a cross-sectional view of a tire in which a tire air pressure sensor unit is disposed according to another embodiment of the present invention, which is part C of FIG. 3 .

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the description of the invention. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all conversions, equivalents, or substitutes included in the spirit and scope of the present invention. In describing the present invention, even if shown in different embodiments, the same identification numbers are used for the same components.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when describing with reference to the drawings, the same or corresponding components are assigned the same reference numerals, and overlapping descriptions thereof will be omitted. .

In the following embodiments, terms such as first and second are used for the purpose of distinguishing one component from another component without limiting meaning.

In the following examples, expressions in the singular number include plural expressions unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean that features or components described in the specification exist, and do not preclude the possibility that one or more other features or components may be added.

In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to those shown.

In the following embodiments, the x-axis, y-axis, and z-axis are not limited to the three axes of the Cartesian coordinate system, and may be interpreted in a broad sense including these. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but may refer to different directions that are not orthogonal to each other.

When an embodiment is otherwise implementable, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order reverse to the order described.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

For reference, unless specifically limited in the present specification, the driving direction may correspond to the X-axis direction, the width direction to the Y-axis direction, and the height direction to the Z-axis direction, respectively.

Hereinafter, a tire according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 .

1 is a view showing a vehicle equipped with a tire according to an embodiment of the present invention. 2 is a perspective view showing a tire according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of the inside of a tire equipped with a conductive part according to an embodiment of the present invention, taken along line A-A' of FIG. 2 .

1 to 3, the tire according to an embodiment of the present invention includes a tread 110 extending along the circumferential direction of the tire 100 and a rim 200 disposed inside the tread 110. Including, the inner liner 170 is disposed on the inner surface of the tread 110, and the conductive portion 171 connected to the rim 200 is disposed on the inner surface of the inner liner 170.

The tire 100 is a pneumatic tire, and may include a tread 110, a sidewall 120 extending from both sides of the tread 110, and a bead 130 disposed at an end of the sidewall 120. can

In addition, the tire 100 may include a body ply 140 and a belt layer 150 located below the tread 110, and a cap ply 160 may be further included on the upper portion of the belt layer 150. there is. In addition, the tire 100 may include an inner liner 170 positioned inside the tread 110 and the pair of sidewalls 120 to maintain the internal air pressure of the tire 100 .

The tread 110 may have a tread block TB partitioned by a plurality of grooves 115 . The tread block TB is a part in contact with the ground when the vehicle is running, and is partitioned by a first groove that runs around the tire 100 in the radial direction and a second groove formed in the lateral direction of the tire 100. can The tread 110 is made of a thick rubber layer and transmits driving force and braking force of the vehicle to the ground.

On the surface of the tread block TB, tread patterns for steering safety, traction, and braking properties and blocks partitioned by the tread patterns may be positioned. The tread patterns may include a plurality of grooves for drainage and sipes for improving traction and braking power when driving on a wet road. The sipe is formed on the tread block and may be a groove having a smaller size than the groove. Sipes can increase the driving force and braking force of the tire 100 by absorbing moisture and breaking the water film when driving on a wet road.

The tread 110 may include a sidewall 120, a body ply 140, a belt layer 150, a cap ply 160, and an inner liner 170 therein.

The bead 130 is disposed at an end of the sidewall 120 and serves to mount the tire 100 to the rim 200 . The bead 130 may include a bead core 131 and a bead filler 132 .

The bead core 131 is disposed below the bead filler 132 and may be formed by twisting a plurality of rubber-coated steel bead cords (wires).

The bead 130 includes a bead filler 132 , and the bead filler 132 may be disposed extending from the bead core 131 toward the sidewall 120 . The bead filler 132 is a rubber filler attached to one side of the bead core 131 and serves to reinforce the bead core 131 . In another embodiment, a plurality of bead fillers 132 may have different physical properties.

Bead 130 may have a plurality of insertion grooves (not shown). The insertion groove is inserted into a mounting protrusion (not shown) of the rim 200 so that the tire 100 can be mounted on the rim 200 .

The body ply 140 extends along the tread 110 , the sidewall 120 and the bead 130 to form the skeleton of the tire 100 . The body ply 140 may have a structure in which a tire cord is included inside a certain rubber component.

Since the body ply 140 is turned up at the bead 130, an inner space partitioned by the body ply 140 may be formed, and the bead core 131 and the bead filler 132 may be formed in the inner space. ) is placed.

The body ply 140 may be formed by overlapping a plurality of cord papers made of high-strength fiber organic materials such as steel, polyester, or rayon, and then coating them with rubber and rolling them. Specifically, the body ply 140 may include at least one rubber component selected from the group consisting of synthetic rubber and natural rubber, and may include at least one tire cord. Various natural fibers or rayon, nylon, polyester, and Kevlar may be used as the tire cord, and a steel cord formed by twisting a plurality of thin wires may also be used.

The belt layer 150 can improve durability of the tire 100 and form a skeleton. In addition, the belt layer 150 plays a role of securing driving stability by maintaining a wide contact surface of the tread 110 as well as mitigating external impact. The belt layer 150 is disposed below the tread 110 and may be formed by rolling by coating a plurality of belt cords (not shown) made of steel or organic fibers with rubber.

The belt layer 150 may be provided in plurality. For example, a first belt layer 151 disposed on the upper surface of the inner liner 170 and a second belt layer 152 disposed on the upper surface of the first belt layer 151 may be provided.

Cap ply 160 is disposed between tread 110 and belt layer 150 . The cap ply 160 can improve performance when driving with special cord paper attached to the belt layer 150 . The cap ply 160 may include, for example, polyester synthetic fiber. The cap ply 160 is supported by the belt layer 150 and the body ply 140, thereby minimizing movement of the belt layer 150 during driving, thereby ensuring driving stability.

The inner liner 170 may be disposed inside the tire 100 to prevent air leakage and maintain air pressure in the tire 100 . The inner liner 170 may be formed of a rubber layer having excellent sealing properties. For example, the inner liner 170 may be made of high-density butyl rubber or the like.

The inner liner 170 may be disposed inside the body ply 140 and extend to the bead 130 . The inner liner 170 may contact one surface of the body ply 140, and both ends may contact the bead 130.

The rim 200 may be connected to the tire 100 to support the tire 100 and form an internal space 180 between the rim 200 and the tire 100 . The inner space 180 is filled with air, and the rim 200 may include a valve (not shown) connected to the inner space 180 . In one embodiment, the rim 200 may be formed of a metal material such as aluminum or alloy.

In this way, the tire 100 and the rim 200 maintain a sealed state in a state in which high-pressure air is filled in the inner space 180 . For this reason, resonance noise may be generated inside due to rotational force while the tire 100 is in contact with the road surface.

An inner liner 170 may be disposed on the innermost side of the tread 110 . The inner liner 170 may be disposed to face the surface of the rim 200 . An inner space 180 may be formed between the rim 200 and the inner liner 170 .

According to one embodiment of the present invention, a conductive portion 171 connected to the rim 200 may be disposed on an inner surface of the inner liner 171 . The conductive portion 171 may be coated on the inner surface of the inner liner 170 with a spray. The conductive part 171 may be connected to the rim 200 through the inner surface of the inner liner 171 and the inner surface of the bead part 130 .

The rim 200 may include a power storage unit (not shown) capable of storing static electricity. When the tire is running, static electricity may be generated in the tread 110 , the inner liner 170 , and other elements disposed between the tread 110 and the inner liner 170 . According to one embodiment of the present invention, the generated static electricity may be transferred to the rim 200 through the conductive part 171 disposed on the inner surface of the inner liner 170 .

The conductive portion 171 may be formed of a film layer. A conductive portion 171 formed of a film layer may be disposed to cover the inner surface of the inner liner 170 .

Static electricity generated in the tread 110 and the inner liner 170 during tire driving is transferred to the rim 200 through the conductive part 171 according to an embodiment of the present invention, thereby securing electrical energy and using the secured electrical energy. It can be used for tires and various parts connected thereto.

According to one embodiment of the present invention, the inside of the tread 110 may further include a chimney portion 300 disposed to be spaced apart from the tread surface. The chimney unit 300 may be connected to the conduction unit 171 . The chimney part 300 is disposed inside the tread 110 to transfer static electricity generated from the tread 110 to the conductive part 171 .

Since the chimney unit 300 is disposed to be spaced apart from the tread surface, it is possible to prevent static electricity from being discharged to the outside of the tire through the chimney unit 300 .

Hereinafter, the shape of the conduction unit according to an exemplary embodiment of the present invention will be described with reference to FIG. 4 .

FIG. 4 is part B of FIG. 3 and is a view showing a view of a surface of a conductive part according to an embodiment of the present invention.

Referring to FIG. 4 , the conductive portion 171 may be formed of a mesh-shaped film layer. That is, the air permeability of the inner liner 170 is maintained through the mesh-shaped conductive portion 171 in which a plurality of holes are formed, and static electricity generated in the tread 110 and the inner liner 170 is passed through the conductive portion 171 to the rim. (200) can be delivered.

The conductive part 171 may be formed of a metal material. The metal material may include a material having excellent electrical conductivity. Static electricity can be transmitted to the rim 200 without loss through the conductive portion 171 made of a metal material having excellent electrical conductivity.

The conductive part 171 may be manufactured by 3D printing. In addition, the conductive portion 171 may be manufactured using a conductive material in various ways.

Hereinafter, a tire in which a thermoelectric element according to another embodiment of the present invention is disposed will be described with reference to FIG. 5 . Details not shown in FIG. 5 may refer to FIGS. 1 to 4 .

5 is a cross-sectional view of a tire in which a thermoelectric element unit is disposed according to another embodiment of the present invention, which is part C of FIG. 3 .

Referring to FIG. 5 , the tire according to another embodiment of the present invention may further include a thermoelectric element unit 400 disposed inside the tread 110 .

According to one embodiment of the present invention, the inside of the tread 110 may further include a chimney portion 300 disposed to be spaced apart from the tread surface. The chimney unit 300 may be connected to the conduction unit 171 . The chimney unit 300 may be disposed inside the tread 110 to transfer static electricity generated from the tread 110 to the conductive unit 171 .

Since the chimney unit 300 is spaced apart from the tread surface TBS by a predetermined distance D, it is possible to prevent static electricity from being discharged to the outside of the tire through the chimney unit 300.

The thermoelectric element unit 400 may be connected to the chimney unit 300 through the conductive unit 300a. The thermoelectric element unit 400 may convert thermal energy generated from the tread 110 into electrical energy during driving of the tire. The converted electrical energy may be transferred to the chimney portion 300 through the conductive portion 300a. Electrical energy transmitted to the chimney unit 300 is transferred to the rim 200 through the conductive unit 171 connected to the chimney unit 300, so that the electrical energy can be secured.

Hereinafter, a tire in which a thermoelectric element according to another embodiment of the present invention is disposed will be described with reference to FIG. 6 . Details not shown in FIG. 6 may refer to FIGS. 1 to 4 .

6 is a cross-sectional view of a tire in which a piezoelectric element unit is disposed according to another embodiment of the present invention, which is part C of FIG. 3 .

Referring to FIG. 6 , the tire according to another embodiment of the present invention may further include a piezoelectric element unit 500 disposed inside the tread 110 .

According to one embodiment of the present invention, the inside of the tread 110 may further include a chimney unit 300 disposed to be spaced apart from the tread surface TBS. The chimney unit 300 may be connected to the conduction unit 171 . The chimney part 300 is disposed inside the tread 110 to transfer static electricity generated from the tread 110 to the conductive part 171 .

Since the chimney unit 300 is spaced apart from the tread surface TBS by a predetermined distance D, it is possible to prevent static electricity from being discharged to the outside of the tire through the chimney unit 300.

The piezoelectric element unit 500 may be connected to the chimney unit 300 through the conductive unit 300a. The thermoelectric element unit 400 may convert pressure generated in the tread 110 during driving of the tire into electrical energy. The converted electrical energy may be transferred to the chimney portion 300 through the conductive portion 300a. Electrical energy transmitted to the chimney unit 300 is transferred to the rim 200 through the conductive unit 171 connected to the chimney unit 300, so that the electrical energy can be secured.

Hereinafter, a tire in which a tire air pressure sensor according to another embodiment of the present invention is disposed will be described with reference to FIG. 7 . Details not shown in FIG. 7 may refer to FIGS. 1 to 4 .

7 is a cross-sectional view of a tire in which a tire air pressure sensor unit is disposed according to another embodiment of the present invention, which is part C of FIG. 3 .

Referring to FIG. 7 , a tire according to another embodiment of the present invention may further include a tire air pressure sensor 600 disposed inside the tread 110 .

According to one embodiment of the present invention, the inside of the tread 110 may further include a chimney unit 300 disposed to be spaced apart from the tread surface TBS. The chimney unit 300 may be connected to the conduction unit 171 . The chimney part 300 is disposed inside the tread 110 to transfer static electricity generated from the tread 110 to the conductive part 171 .

Since the chimney unit 300 is spaced apart from the tread surface TBS by a predetermined distance D, it is possible to prevent static electricity from being discharged to the outside of the tire through the chimney unit 300.

The tire air pressure sensor 600 may be connected to the chimney part 300 through the conductive part 300a. The tire air pressure sensor 600 may check the air pressure of a tire. Information on air pressure and temperature inside the tire checked through the tire air pressure sensor may be wirelessly transmitted to the vehicle C through an antenna, and the transmitted information may be checked by a driver through a display device of the vehicle.

Energy capable of driving the tire air pressure sensor 600 may be required to check air pressure and temperature information of the tire while driving. At this time, the tire air pressure sensor 600 may be driven using static electricity generated from the tread 110 and the inner liner 170 of the tire. Static electricity generated from the tread 110 and the inner liner 170 of the tire is transferred to the tire air pressure sensor 600 through the chimney unit 300 so that the tire air pressure sensor 600 can perform a sensing operation through the corresponding electrical energy. can

As such, the present invention has been described with reference to the embodiments shown in the drawings, but this is only an example. Those skilled in the art can fully understand that various modifications and equivalent other embodiments are possible from the embodiments. Therefore, the true technical protection scope of the present invention should be determined based on the appended claims.

Specific technical details described in the embodiments are examples, and do not limit the technical scope of the embodiments. In order to briefly and clearly describe the description of the invention, descriptions of conventional general techniques and configurations may be omitted. In addition, the connection of lines or connection members between the components shown in the drawing is an example of functional connection and / or physical or circuit connection, which can be replaced in an actual device or additional various functional connections, physical connections, or circuit connections. In addition, if there is no specific reference such as "essential" or "important", it may not necessarily be a component necessary for the application of the present invention.

“Above” or similar designations described in the description and claims of the invention may refer to both singular and plural, unless otherwise specifically limited. In addition, when a range is described in an embodiment, it includes an invention in which individual values belonging to the range are applied (unless there is no description to the contrary), and each individual value constituting the range is described in the description of the invention. same. In addition, if there is no clear description or description of the order of steps constituting the method according to the embodiment, the steps may be performed in an appropriate order. Embodiments are not necessarily limited according to the order of description of the steps. The use of all examples or exemplary terms (eg, etc.) in the embodiments is simply to describe the embodiments in detail, and unless limited by the claims, the examples or exemplary terms limit the scope of the embodiments. It is not. In addition, those skilled in the art will appreciate that various modifications, combinations and changes may be made according to design conditions and factors within the scope of the appended claims or equivalents thereof.

110: tread
170: inner liner
171: conduction section
200: rim
300: chimney part
300a: conductive part
400: thermoelectric element unit
500: piezoelectric element unit
600: tire air pressure sensor unit

Claims (10)

tread extending along the circumferential direction of the tire; and
Including a rim disposed inside the tread,
An inner liner is disposed on the inner surface of the tread,
A tire having a conductive portion connected to the rim on an inner surface of the inner liner. According to claim 1,
The conductive portion is coated on the inner surface of the inner liner. According to claim 2,
The conductive portion is coated with a spray on the inner surface of the inner liner. According to claim 1,
The conductive portion is connected to the rim through an inner surface of the bead portion. According to claim 1,
The conductive portion is formed in a mesh shape. According to claim 1,
The conductive part is manufactured by 3D printing. According to claim 1,
Further comprising a chimney portion disposed inside the tread to be spaced apart from the tread surface,
The chimney part is connected to the conduction part. According to claim 7,
Further comprising a thermoelectric element disposed inside the tread,
The thermoelectric element unit is connected to the chimney unit. According to claim 7,
Further comprising a piezoelectric element disposed inside the tread,
A tire in which the piezoelectric element unit is connected to the chimney unit. According to claim 7,
Further comprising a tire air pressure sensor disposed inside the tread,
The tire air pressure sensor unit is connected to the chimney unit.

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