KR102635117B1 - Tire and tire manufacturing method - Google Patents

Abstract

One embodiment of the present invention relates to a tire installed and applied to a vehicle, comprising at least a tread portion including an area in contact with the road surface when the vehicle is running, a sidewall including an area adjacent to the tread portion and spaced apart from the road surface, and Disclosed is a tire including an electronic device module corresponding to a tread portion or a sidewall and disposed on the inside of the tire, and an elastic foam layer formed on the electronic device module to cover the electronic device module.

Description

Tire and tire manufacturing method

Embodiments of the present invention relate to tires and methods of manufacturing tires.

The vehicles that users drive are made up of many parts, and among them, tires have a significant impact on the driving of the vehicle and can be said to be one of the key parts for ensuring user safety.

In particular, due to the development of industry, the amount of automobile driving is increasing due to increased movement of logistics, increased personal workload, etc., and increased family life.

Meanwhile, with the development of vehicles equipped with tires and the inclusion of many mechanical or electronic parts, the generation of static electricity is increasing. In particular, with the increase in hybrid or electric vehicles, the frequency of such static electricity generation and the size of the generated static electricity also increase, which increases the stability of driving. There are limits to improving precise control capabilities. Meanwhile, there are limits to improving efficiency in terms of mass production of tires, increased use of tires, and management of various information through tires.

In addition, when a vehicle is driven through tires, regular or irregular noise is generated through a continuous process of friction with the road surface. This can increase depending on the high-speed environment or road surface conditions, and there is a limit to improving driving convenience for passengers. .

Meanwhile, the tire manufacturing process includes various processes, for example, a plurality of processes including a heating process and a pressurizing process. Accordingly, there are limitations in manufacturing tires that improve durability and stability by performing each process stably.

Embodiments of the present invention provide a tire and a tire manufacturing method that can improve driving convenience, facilitate tire information management, and improve the convenience of the manufacturing process.

One embodiment of the present invention relates to a tire installed and applied to a vehicle, comprising at least a tread portion including an area in contact with the road surface when the vehicle is running, a sidewall including an area adjacent to the tread portion and spaced apart from the road surface, and Disclosed is a tire including an electronic device module corresponding to a tread portion or a sidewall and disposed on the inside of the tire, and an elastic foam layer formed on the electronic device module to cover the electronic device module.

In this embodiment, the elastic foam layer may be disposed in an area that overlaps the tread portion.

In this embodiment, the elastic foam layer may be disposed in an area that overlaps the sidewall.

In this embodiment, the elastic foam layer may contain a foamable resin-based material.

In this embodiment, the tire may include an inner liner on the innermost side, and the elastic foam layer may include disposed on the inner liner.

In this embodiment, the electronic device module may include one or more electronic devices and one or more antenna units connected to the electronic devices.

In this embodiment, the electronic device module may include a cover layer that covers at least one side of the electronic device.

Another embodiment of the present invention includes preparing a tire spare member including at least a tread portion and a sidewall, and disposing an electronic device module in a region of the inner space of the tire spare member. Disclosed is a tire manufacturing method including the step of disposing an element module and injecting a material for forming an elastic foam layer into an inner space of the tire spare member.

In this embodiment, the step of curing after injecting the material for forming the elastic foam layer may be further included.

In this embodiment, the tire spare member prepared in the step of preparing the tire spare member may include one in which a curing process has been completed.

Other aspects, features and advantages in addition to those described above will become apparent from the following drawings, claims and detailed description of the invention.

The tire and tire manufacturing method according to this embodiment can improve the driving convenience of transportation vehicles equipped with tires, facilitate tire information management, and improve the convenience of the manufacturing process.

1 is a diagram schematically showing a tire according to an embodiment of the present invention.
Figure 2 is a cross-sectional view taken along line II-II of Figure 1.
FIG. 3 is a diagram illustrating an example electronic device module that may be used in the embodiment of FIG. 2.
FIG. 4 is a diagram illustrating another example electronic device module that may be used in the embodiment of FIG. 2.
Figure 5 is a diagram illustrating an alternative embodiment of the embodiment of Figure 2.
FIG. 6 is a diagram illustrating an alternative embodiment of the other embodiment of FIG. 2.
Figure 7 is a diagram schematically showing a tire according to another embodiment of the present invention.
FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG. 7.
FIG. 9 is a diagram illustrating an alternative embodiment of the embodiment of FIG. 8.
Figure 10 is a flowchart for schematically explaining a tire manufacturing method according to an embodiment of the present invention.
Figures 11 to 15 are diagrams for explaining an example of the tire manufacturing method of Figure 10.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. When describing with reference to the drawings, identical or corresponding components will be assigned the same reference numerals and redundant description thereof will be omitted. .

In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular terms include plural terms unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean that the features or components described in the specification exist, and do not exclude in advance the possibility of adding one or more other features or components.

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

In the following embodiments, the x-axis, y-axis, and z-axis are not limited to the three axes in the Cartesian coordinate system, but can 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 also refer to different directions that are not orthogonal to each other.

In cases where an embodiment can be implemented differently, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially at the same time, or may be performed in an order opposite to that in which they are described.

Figure 1 is a diagram schematically showing a tire according to an embodiment of the present invention, and Figure 2 is a cross-sectional view taken along line II-II of Figure 1.

1 and 2, the tire 100 of this embodiment may include a tread portion 110, a sidewall 180, a body ply 130, an inner liner 160, and an elastic foam layer 190. there is.

The tire 100 may have a shape extending in the circumferential direction (RT) around the central axis (AX). Additionally, a wheel (not shown) may be coupled to the inside of the tire 100 in the radial direction (r) from the central axis (AX).

The tread portion 110 may include an area facing the road surface when the tire 100 is mounted on the vehicle and the vehicle is driven. For example, the tread portion 110 may include an area that comes into contact with the road surface when the vehicle is running.

The tread portion 110 may have one or more patterns, and a plurality of grooves 115 may be formed adjacent to these patterns. The groove 115 may have a shape extending long in at least a first direction. Additionally, the groove 115 may also include a region that extends in a direction intersecting the first direction.

The number and shape of the grooves 115 may be determined in various ways depending on the driving characteristics and purposes of the tire 100.

The sidewall 180 is connected to the tread portion 110. As an optional embodiment, the tire 100 may include a bead portion 140 for effective mounting on a wheel (not shown), and the sidewall 180 is between the tread portion 110 and the bead portion 140. can be placed.

The sidewall 180 may include an area spaced apart from the road surface when the tire 100 is mounted on the vehicle and the vehicle is driven. The tire 100 can flex and extend through the sidewall 180.

The sidewall 180 is formed on both sides of the tread portion 110 of the tire 100, and the material of the sidewall 180 on one side and the sidewall 180 on the other side may be the same.

As an optional embodiment, the materials of the sidewall 180 on one side and the sidewall 180 on the other side may be different.

As another optional embodiment, the modulus may be different by changing the composition of the sidewall 180 on one side and the sidewall 180 on the other side.

The bead portion 140 may be formed in an area of the sidewall 180 opposite to the area connected to the tread portion 110.

The bead portion 140 may have various shapes and, for example, may be formed to include a core area and a buffer area.

The core area of the bead portion 140 may have a wire, for example, a wire bundle-shaped area in the form of a square or hexagonal wire coated with rubber.

The buffer area of the bead portion 140 is formed to surround the core area, and can distribute the load on the core area and relieve external shock.

As an optional embodiment, the tire 100 may include a body ply 130 at least in an area overlapping the tread portion 110.

The body ply 130 forms the main frame of the tire 100 and can support the load received by the tire 100 and absorb shock from the road surface. As an optional embodiment, the body ply 130 may include a cord type.

As an optional embodiment, the inner liner 160 may be disposed inside the body ply 130. The inner liner 160 is disposed on the innermost side of the tire 100 to reduce or prevent air leakage.

As an optional embodiment, the cap ply 120 may be disposed between the body ply 130 and the tread portion 110. The cap ply 120 may be formed of various materials and may have a plurality of cord shapes.

As an optional embodiment, the belt layer 170 may be further disposed between the cap ply 120 and the body ply 130. The belt layer 170 can alleviate the shock that the tire 100 receives from the road surface when a vehicle equipped with the tire 100 is driven and expand the contact surface of the tread portion 110 to improve grounding characteristics and driving stability. .

The belt layer 170 may be formed in various shapes, for example, may be formed of multiple layers.

The electronic device module (RD) corresponds to the tread portion 110 or the sidewall 180 and is located on the inside of the tire 100, for example, in an area that is not exposed to the outside while the vehicle equipped with the tire 100 is running. It can be placed on the side. As a specific example, the electronic device module RD may be disposed in an area overlapping the tread portion 110.

As an optional embodiment, the electronic device module RD may be arranged to contact one area of the inner liner 160.

The electronic device module (RD) may be configured to transmit or receive one or more signals. For example, an electronic device module (RD) may include electronic devices to identify one or more pieces of information.

Additionally, as an example, an electronic device module (RD) is an electronic device using radio frequencies and may include a tag used for RFID (Radio Frequency Identification).

As a specific example, an electronic device module (RD) may include an IC chip as an electronic device, and such a chip may be formed to perform one or more processes and may include memory and other circuitry.

In this embodiment, the electronic device module (RD) may include various other types of structures, and the types of RFID tags may be determined in various ways. For example, depending on the purpose, it may be in the form of a tag without an IC chip, unlike the above. Additionally, it may have a built-in battery structure for RFID operation, or it may be a passive device type without a battery. Additionally, if the IC chip provided in the RFID includes memory, various types of memory such as read and write functions may be possible.

The elastic foam layer 190 may be formed on one surface of the inner liner 160. For example, the elastic foam layer 190 may be connected to one side of the inner liner 160, and as a specific example, may be in contact with one side of the inner liner 160.

The elastic foam layer 190 may be disposed in a position that overlaps the tread portion 110 in at least one area.

The elastic foam layer 190 may be formed to cover at least the electronic device module RD.

For example, the electronic device module RD may be fixed to the tire 100 through the elastic foam layer 190, and as a specific example, may be fixed to the inner liner 160. As an optional embodiment, direct contact can be made between the electronic device module RD and the inner liner 160 without an adhesive layer intervening, and through this, the signal sensitivity of the electronic device module RD can be efficiently improved.

The elastic foam layer 190 may be made of an elastic material, for example, a resin-based material. As a specific example, it may contain foamable resin.

As an example, the elastic foam layer 190 may have a sponge shape made by foaming rubber or a synthetic resin-based material.

As a specific example, the elastic foam layer 190 may include a foam material and synthetic resin.

As an optional example, the elastic foam layer 190 may contain ether-based urethane foam, foamable polyurethane-based material, etc.

As an optional embodiment, the elastic foam layer 190 is a foam material made of azodicarbon amide (ADCA), p,p'-oxybis(benzenesulfonyl hydrazide) ), dinitroso pentamethylenetetra mine (DPT), p-toluenesulfonylhydrazide, and benzenesulfonyl hydrazide. It may contain one or more of chemical blowing agents.

The elastic foam layer 190 may contain a foam material and may be of a porous type through which it may implement a sound-absorbing function.

The elastic foam layer 190 can reduce noise generated during driving of a vehicle equipped with tires 100. In addition, as a material with elasticity, the shock alleviation effect can be improved through elasticity in the driving direction or the direction crossing it while driving.

The elastic foam layer 190 may have a width, for example, may have a width based on the width direction of the tire 100, and as a specific example, it does not overlap the sidewall 180 and is connected to the tread portion 110. It may have a width such that it overlaps at least one area of .

As an optional embodiment, both sides of the elastic foam layer 190 in the width direction may include curved surfaces, and through this, the side surfaces may be formed in the inner space of the tire 100, for example, in the space adjacent to the sidewall 180. Noise generated when the wall (180 degrees) is bent can be reduced.

As an optional embodiment, the elastic foam layer 190 may include a convex portion 190P. The convex portion 190P is a region of the elastic foam layer 190 that is thicker than other adjacent regions, and may include a region that protrudes from the adjacent region toward the inner space of the tire 100. This convex portion 190P may overlap the electronic device module RD. The convex portion 190P is formed to correspond to the electronic device module (RD), thereby providing effective support for the electronic device module (RD), and is capable of preventing unnecessary noise from being affected by unnecessary noise while driving a vehicle equipped with a tire 100. can be reduced.

As an optional embodiment, the convex portion 190P may be formed to have an area with a different width, for example, an area farther away from the electronic device module RD of the tire 100 than an area adjacent to the electronic device module RD. The width may be small, and as a specific example, the width may gradually increase in the direction toward the electronic device module (RD).

Through this, stable formation of the convex portion 190P of the elastic foam layer 190 can be easily achieved. Additionally, when forming the elastic foam layer 190 using an injection method, the process can be easily performed by injecting the elastic foam layer 190 into a position corresponding to one area of the convex portion 190P.

The elastic foam layer 190 may have a length, for example, may have a length based on the circumferential direction (RT) of the tire 100. As an optional embodiment, the elastic foam layer 190 may have a plurality of patterns spaced apart from each other along a longitudinal direction, for example, a circumferential direction (RT).

Additionally, as another example, the elastic foam layer 190 may have an extended shape connected along the longitudinal direction, or, for example, may be formed to extend long along the circumferential direction (RT).

FIG. 3 is a diagram illustrating an example electronic device module that may be used in the embodiment of FIG. 2.

Referring to FIG. 3, the electronic device module RD may include an electronic device unit (RCN) and one or more antenna units RA1 and RA2.

The electronic device unit (RCN) may include one or more electronic devices.

The antenna units (RA1, RA2) are connected to the electronic device unit (RCN) and can communicate with an external device, for example, a reader. One or more antenna units RA1 and RA2 include first and second antenna units RA1 and RA2, and each may be connected to both sides of the electronic device unit RCN.

FIG. 4 is a diagram illustrating another example electronic device module that may be used in the embodiment of FIG. 2.

Referring to FIG. 4 , the electronic device module (RD) may include an electronic device unit portion (RCN) and a cover layer (CN).

The cover layer CN may include a first layer CN1 and a second layer CN2.

An electronic device unit (RCN) may be disposed between the first layer (CN1) and the second layer (CN2). In addition, although not shown, as an optional embodiment, one or more antenna units RA1 and RA2 shown in FIG. 3 may be disposed between the first layer CN1 and the second layer CN2.

As an optional embodiment, the electronic device unit RCN may be arranged to be covered on both sides with the first layer CN1 and the second layer CN2.

The cover layer CN may be formed of various materials. For example, the cover layer (CN) may include a rubber-based base material. As a specific example, the cover layer CN may include a base material based on natural rubber or synthetic rubber material, and can be applied to the tire through this to maintain a stable bond with the tire during exercise.

Additionally, the cover layer CN may contain a resistance control material in addition to the rubber-based base material. This resistance control material contains a component with high electrical resistance to reduce the conductivity of the cover layer CN, and may contain, for example, an insulating inorganic material.

Through this, when transmitting a signal through the electronic device module (RD), it is converted into electrical energy in the cover layer (CN), thereby reducing the loss of the signal or the occurrence of electrical interference to the electrical signal, thereby improving the efficiency of signal transmission. , As a result, the signal recognition distance may increase. As a specific example, when the electronic device module (RD) is in the form of an RFID tag, the signal recognition efficiency of the reader can be improved.

The resistance control material may contain a variety of materials, and specific examples may include silicon oxide, for example, silica (silica). Additionally, as another example, it may contain talc or calcium carbonate (CaCO3).

Additionally, the cover layer CN may further include reinforcing material. The reinforcing material may contain a resin-based material, for example, a phenolic resin-based material. As a specific example, the reinforcing material of the cover layer (CN) may contain an alkyl phenol-based resin. Additionally, as an example, the reinforcing material of the cover layer CN may contain alkyl phenol formaldehyde resin. The cover layer (CN) can secure tensile strength by containing a reinforcing material. For example, when it contains the above-mentioned resistance control material for high resistance control, for example, when it contains an insulating inorganic material such as silica, it is a rubber-based base material. It can reduce the weakening of the binding force with.

Meanwhile, the first layer CN1 and the second layer CN2 may be formed of the same material or may be formed of different materials.

Figure 5 is a diagram illustrating an alternative embodiment of the embodiment of Figure 2.

Referring to FIG. 5, the elastic foam layer 190' of the tire 100' may have a width, for example, may have a width based on the width direction of the tire 100', and as a specific example, the sidewall Can be overlapped at (180').

For example, the elastic foam layer 190' has a central area 190M' overlapping the tread portion 110 and two peripheral areas 190S1' and 190S2' disposed between the central area 190M'. and the peripheral areas 190S1' and 190S2' may include a first peripheral area 190S1' and a second peripheral area 190S2'. Additionally, the convex portion 190P' may be connected to the central area 190M' and may be disposed between the first peripheral area 190S1' and the second peripheral area 190S2'.

When the elastic foam layer 190' covers the electronic device module RD and is placed, the connection between the elastic foam layer 190' and the inner liner 160 is maintained through the two peripheral areas 190S1' and 190S2' on both sides. By strengthening, it is possible to reduce or prevent displacement and peeling of the elastic foam layer 190' and the electronic device module (RD).

As an optional example, the first peripheral area 190S1' and the second peripheral area 190S2' of the elastic foam layer 190' may include an inclined surface TS. Occurs in the sidewall 180 in the area where the first peripheral area 190S1' and the second peripheral area 190S2' of the elastic foam layer 190' overlap the sidewall 180 through the inclined surface TS. The direct reduction effect of noise can be improved.

In addition, the inner space of the tire 100' including the inclined surface TS can be made to have an area whose width gradually increases as it moves toward the center, and through this, a natural dispersion and reduction effect of noise in the inner space can be realized. .

FIG. 6 is a diagram illustrating an alternative embodiment of the other embodiment of FIG. 2.

Referring to FIG. 6 , when compared to FIG. 5 , the elastic foam layer 190″ of the tire 100″ may include a curved surface in at least one area, unlike the structure of FIG. 5 . For example, a curved surface may be included between the central area (190M") and the peripheral areas (190S1" and 190S2").

As an optional embodiment, the first peripheral area 190S1" or the second peripheral area 190S2" of the peripheral areas 190S1" and 190S2" may include a curved surface, and as a specific example, each inclined surface TS may have a curved surface. may include.

Among the areas of the elastic foam layer 190", the area facing the inner space of the tire 100" includes a curved surface, thereby increasing the effect of strengthening the connection between the elastic foam layer 190" and the inner liner 160.

In addition, the curved surface of the elastic foam layer 190" is formed in the area corresponding to the shoulder portion or sidewall 180 of the tire 100", so that the sidewall 180 is not flexed or stretched during driving using the tire 100". The elastic foam layer 190" and the electronic device module (RD) covered by the elastic foam layer 190" are stable through effective load relief of the elastic foam layer 190" in areas where a large load is applied during cornering. The layout can be maintained.

The tire of this embodiment has an electronic device module disposed in one area, specifically the inside of the tire, and can transmit or receive one or more signals through the electronic device module, for example, securing various information using the form of an RFID tag. and can be used. In addition, it is easy to manage various information for each tire, so various information can be easily and precisely managed in the manufacturing, sales, and after-sales service of tires.

In addition, when placing such an electronic device module, the electronic device module can be easily coupled to the tire by placing it in the inner space of the tire, for example, inside the inner liner, and then forming an elastic foam layer to cover it.

The elastic foam layer may contain a foaming component resin, and is formed of a material such as, for example, urethane foam. When noises of various shapes and sizes are generated due to friction during the driving of a vehicle equipped with tires, these noises are generated inside the tire. It can be absorbed through the elastic foam layer, improving noise reduction characteristics. Additionally, through this effect, it is possible to reduce the influence of electronic device modules by noise.

FIG. 7 is a diagram schematically showing a tire according to another embodiment of the present invention, and FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG. 7.

7 and 8, the tire 200 of this embodiment may include a tread portion 210, a sidewall 280, a body ply 230, an inner liner 260, and an elastic foam layer 290. there is.

The tire 200 may have a shape extending in the circumferential direction (RT) around the central axis (AX). Additionally, a wheel (not shown) may be coupled to the inside of the tire 200 in the radial direction (r) from the central axis (AX).

The tread portion 210 may include an area facing the road surface when the tire 200 is mounted on the vehicle and the vehicle is driven. For example, the tread portion 210 may include an area that comes into contact with the road surface when the vehicle is running.

The tread portion 210 may have one or more patterns, and a plurality of grooves 215 may be formed adjacent to these patterns. The groove 215 may have a shape extending long in at least a first direction. Additionally, the groove 215 may also include a region that extends in a direction intersecting the first direction.

The number and shape of the grooves 215 may be determined in various ways depending on the driving characteristics and purposes of the tire 200.

The sidewall 280 is connected to the tread portion 210. As an optional embodiment, the tire 200 may include a bead portion 240 for effective mounting on a wheel (not shown), and the sidewall 280 is between the tread portion 210 and the bead portion 240. can be placed.

The sidewall 280 may include an area spaced apart from the road surface when the tire 200 is mounted on the vehicle and the vehicle is driven. The tire 200 can flex and extend through the sidewall 280.

The sidewall 280 is formed on both sides around the tread portion 210 of the tire 200, and the material of the sidewall 280 on one side and the sidewall 280 on the other side may be the same.

As an optional embodiment, the materials of the sidewall 280 on one side and the sidewall 280 on the other side may be different.

As another optional embodiment, the modulus may be different by varying the composition of the sidewall 280 on one side and the sidewall 280 on the other side.

The bead portion 240 may be formed in an area of the sidewall 280 opposite to the area connected to the tread portion 210.

The bead portion 240 may have various shapes and, for example, may be formed to include a core region and a buffer region.

The core area of the bead portion 240 may have an area in the form of a wire bundle in a square or hexagonal shape made of wire, for example, steel wire coated with rubber.

The buffer area of the bead portion 240 is formed to surround the core area, and can distribute the load on the core area and relieve external shock.

As an optional embodiment, the tire 200 may include a body ply 230 at least in an area overlapping the tread portion 210.

The body ply 230 forms the main frame of the tire 200 and can support the load received by the tire 200 and absorb shock from the road surface. As an optional embodiment, the body ply 230 may include a cord type.

As an optional embodiment, the inner liner 260 may be disposed inside the body ply 230. The inner liner 260 is disposed on the innermost side of the tire 200 to reduce or prevent air leakage.

As an optional embodiment, the cap ply 220 may be disposed between the body ply 230 and the tread portion 210. The cap ply 220 may be formed of various materials and may have a plurality of cord shapes.

As an optional embodiment, the belt layer 270 may be further disposed between the cap ply 220 and the body ply 230. The belt layer 270 can alleviate the shock that the tire 200 receives from the road surface when a vehicle equipped with the tire 200 is driven and expand the contact surface of the tread portion 210 to improve grounding characteristics and driving stability. .

The belt layer 270 may be formed in various shapes, for example, may be formed of multiple layers.

The electronic device module RD corresponds to the sidewall 280 and may be disposed on the inside of the tire 200, for example, on the surface of the area that is not exposed to the outside while the vehicle equipped with the tire 200 is running. .

As an optional embodiment, the electronic device module RD may be placed in contact with one area of the inner liner 260.

The electronic device module (RD) may be configured to transmit or receive one or more signals. For example, an electronic device module (RD) may include electronic devices to identify one or more pieces of information.

Additionally, as an example, an electronic device module (RD) is an electronic device using radio frequencies and may include a tag used for RFID (Radio Frequency Identification).

As a specific example, an electronic device module (RD) may include an IC chip as an electronic device, and such a chip may be formed to perform one or more processes and may include memory and other circuitry.

In this embodiment, the electronic device module (RD) may include various other types of structures, and the types of RFID tags may be determined in various ways. For example, depending on the purpose, it may be in the form of a tag without an IC chip, unlike the above. Additionally, it may have a built-in battery structure for RFID operation, or it may be a passive device type without a battery. Additionally, if the IC chip provided in the RFID includes memory, various types of memory such as read and write functions may be possible.

The elastic foam layer 290 may be formed to cover at least the electronic device module RD.

Additionally, the elastic foam layer 290 may be formed on the inner side of the tire 200, for example, on one side of the inner liner 260. For example, the elastic foam layer 290 may be connected to one side of the inner liner 260, and as a specific example, may be in contact with one side of the inner liner 260.

The elastic foam layer 290 may be disposed in a position where it overlaps the sidewall 280 in at least one area. For example, the elastic foam layer 290 may be disposed to cover the electronic device module RD in an area corresponding to one side of the side walls 280 on both sides. As a specific example, the elastic foam layer 290 may be formed to have an inclined surface to connect the area overlapping the sidewall 280 to the area overlapping the shoulder area or tread portion 210 of the tire 200. Through this, the volume of the area covering the electronic device module (RD) can be effectively increased, thereby improving the fixing force of the electronic device module (RD).

The electronic device module RD may be fixed to the tire 200 through the elastic foam layer 290, and as a specific example, may be fixed to the inner liner 260. As an optional embodiment, direct contact can be made between the electronic device module (RD) and the inner liner 260 without an adhesive layer intervening, and through this, the signal sensitivity of the electronic device module (RD) can be efficiently improved.

The elastic foam layer 290 may be formed of an elastic material, for example, a resin-based material. As a specific example, it may contain foamable resin.

As an example, the elastic foam layer 290 may have a sponge shape made by foaming rubber or a synthetic resin-based material.

As a specific example, the elastic foam layer 290 may include a foam material and synthetic resin.

As an optional example, the elastic foam layer 290 may contain ether-based urethane foam, foamable polyurethane-based material, etc.

As an optional embodiment, the elastic foam layer 290 is a foam material made of azodicarbon amide (ADCA), p,p'-oxybis(benzenesulfonyl hydrazide) ), dinitroso pentamethylenetetra mine (DPT), p-toluenesulfonylhydrazide, and benzenesulfonyl hydrazide. It may contain one or more of chemical blowing agents.

The elastic foam layer 290 may contain a foam material and may be of a porous type through which it may implement a sound-absorbing function.

The elastic foam layer 290 can reduce noise generated during driving of a vehicle equipped with tires 200. In addition, as a material with elasticity, the shock alleviation effect can be improved through elasticity in the driving direction or the direction crossing it while driving.

The elastic foam layer 290 may have a length, for example, may have a length based on the circumferential direction (RT) of the tire 200. As an optional embodiment, the elastic foam layer 290 may have a plurality of patterns spaced apart from each other along a longitudinal direction, for example, a circumferential direction (RT).

Additionally, as another example, the elastic foam layer 290 may have an extended shape connected along the longitudinal direction, or, for example, may be formed to extend long along the circumferential direction (RT).

Although not separately shown, the electronic device module RD of FIGS. 3 and 4 may be selectively applied to this embodiment.

FIG. 9 is a diagram illustrating an alternative embodiment of the embodiment of FIG. 8.

Referring to FIG. 9 , the tire 200' may further include an opposing elastic foam layer 295 facing the elastic foam layer 290. The opposing elastic foam layer 295 may be disposed not to cover the electronic device module RD and may be spaced apart from the elastic foam layer 290.

For example, the opposing elastic foam layer 295 may be formed on the inner side of the tire 200 to face the elastic foam layer 290, for example, on one side of the inner liner 260. For example, the opposing elastic foam layer 295 may be connected to one side of the inner liner 260, and as a specific example, may be in contact with one side of the inner liner 260.

The opposing elastic foam layer 295 may be disposed in a position overlapping the sidewall 280 in at least one area. For example, the opposing elastic foam layer 295 may be disposed in an area opposite to the area where the elastic foam layer 290 is formed among the sidewalls 280 on both sides. As a specific example, the opposing elastic foam layer 295 may be formed to have an inclined surface to connect the area overlapping the sidewall 280 to the area overlapping the shoulder area or tread portion 210 of the tire 200.

The opposing elastic foam layer 295 may face the elastic foam layer 290, and through this, two layers formed of elastic material are formed in the area overlapping the sidewalls 280 on both sides of the inner surface of the tire 200. Since it can be formed, noise reduction ability can be improved when noise occurs while driving using the tire 200.

Additionally, as an optional embodiment, the opposing elastic foam layer 295 may be formed of the same material as the elastic foam layer 290, and as an example, may be formed using the same material at a symmetrical position. Through this, effective noise and noise reduction characteristics can be secured even when the tire 200 is flexed or extended during various cornering while driving using the tire 200.

Figure 10 is a flowchart for schematically explaining a tire manufacturing method according to an embodiment of the present invention.

Referring to FIG. 10, the tire manufacturing method of this embodiment includes a tire spare member preparation step (S10), an electronic device module placement step (S20), a mold portion placement step (S30), an elastic material injection step (S40), and a post-processing step ( S50) may be included.

In the tire spare member preparation step (S10), a tire spare member may be prepared, and this tire spare member may include a tread portion and a sidewall. In addition, the tire spare member may have undergone both heat treatment and molding steps, for example, may have been formed into an external shape by performing a vulcanization step.

The electronic device module arranging step (S20) may include arranging the electronic device module in one area of the inner space of the tire spare member, and the electronic device module is the same as described in the above-described embodiments.

The electronic element module may be placed in contact with an area of the inner space of the tire spare member, for example, in an area of the inner liner, as a specific example, in an area overlapping with the tread portion corresponding to the road surface during driving. there is. At this time, the electronic device module can be placed without a separate adhesive layer. As an optional embodiment, an adhesive layer or adhesive tape may be inserted between the electronic device module and the inner liner.

The mold portion arrangement step (S30) may include disposing the mold portion in the inner space of the tire spare member, and the mold portion may be disposed to cover at least the electronic device module.

The elastic material injection step (S40) may include injecting elastic material to cover the electronic device module using a mold part. The elastic material may be a variety of elastic materials, for example, the material of the elastic foam layer described in the above-described embodiments.

Elastic material can be injected using a variety of methods. For example, the injection process can be carried out simply and quickly using an injection nozzle, and as a specific example, it can be injected through an injection passage in the mold part.

In the post-processing step (S50), a step of removing the mold portion after injecting the elastic material may be performed. In addition, the step of forming an elastic foam layer may proceed through curing of the elastic material. The curing process can be carried out using a variety of methods, and for example, it can be simply injected and then cured at room temperature. As another example, a heating step may be additionally performed to accelerate curing.

Figures 11 to 15 are diagrams for explaining an example of the tire manufacturing method of Figure 10.

Referring to Figure 11, a tire spare member 100A is prepared. The tire spare member 100A may include a tread portion 110, a side wall 180, a body ply 130, and an inner liner 160, and a bead portion 140, a cap ply 120, and a belt layer. (170) may be further included.

The tire spare member 100A may have progressed to the vulcanization stage and its external shape has been formed.

Referring to FIG. 12 , an electronic device module RD may be disposed in one area of the inner space of the tire spare member 100A. The electronic device module RD may be disposed in an area overlapping with the tread portion 110 among the areas of the inner space of the tire spare member 100A.

Additionally, the electronic device module RD may be placed in contact with one area of the tire spare member 100A, for example, may be placed in one area of the inner liner 160. At this time, the electronic device module RD can be placed on the inner liner 160 without a separate adhesive layer. As an optional embodiment, an adhesive layer or adhesive tape may be inserted between the electronic device module RD and the inner liner 160.

Referring to FIG. 13, a mold portion (CST) may be disposed in the inner space of the tire spare member 100A. For example, the mold part CST may be arranged to overlap the electronic device module RD and, as a specific example, cover the electronic device module RD.

The mold portion (CST) may include a convex counterpart (CSTP), and the convex counterpart (CSTP) may be an area that protrudes toward the inner space of the tire spare member 100A rather than an adjacent area. The mold portion (CST) may include one or more injection passages (CSTH), for example in the form of a through portion formed in the convex counterpart (CSTP). Through this, the desired thickness can be stably formed by injecting elastic material from the thick area of the convex counterpart (CSTP).

The mold portion (CST) may include peripheral counterpart portions (CST1, CST2), and the peripheral counterpart portions (CST1, CST2) may include a first peripheral counterpart portion (CST1) and a second peripheral counterpart portion (CST2). there is. The first peripheral corresponding portion (CST1) and the second peripheral corresponding portion (CST2) may be formed in an inclined shape based on the direction from the tread portion 110 toward the sidewall 180.

Additionally, the first peripheral counterpart (CST1) and the second peripheral counterpart (CST2) may be disposed to contact the inner liner 160, for example, the first peripheral counterpart (CST1) and the second peripheral counterpart (CST2). (CST2) can be supported while contacting the inner liner 160, and the mold portion (CST) can maintain a stable arrangement. Through the inclined shape of the first peripheral counterpart (CST1) and the second peripheral counterpart (CST2), a sufficient volume of the elastic foam layer can be secured by securing space inside the mold part (CST), and when the elastic material is injected, The mold part (CST) can maintain a stable state.

Referring to FIG. 14 , the step of injecting elastic material 190A' to cover the electronic device module RD using the mold part CST may be included. Elastic material can be injected using a variety of methods. As an example, the injection process can be carried out simply and quickly using an injection nozzle (NIU). As a specific example, the injection process can be performed through the injection passage (CSTH) of the mold unit (CST). can do.

Through this, the elastic material (190A') can be easily filled in the convex counterpart (CSTP) where the injection passage (CSTH) is formed, and the elastic material (190A') can be used to reduce or prevent the occurrence of voids on the electronic device module (RD). 190A') can be filled.

In addition, the peripheral corresponding parts CST1 and CST2 disposed on both sides and in contact with the inner liner 160 sequentially apply elastic material 190A' to the inside of the first peripheral corresponding part CST1 and the second peripheral corresponding part CST2. ) can be easily placed.

Referring to FIG. 15 , a tire 100' is shown in which the mold portion CST is removed and the elastic material 190A' is cured to form an elastic foam layer 190'. For example, it may be tire 100' in FIG. 5.

Through the manufacturing method of this embodiment, after performing a high-temperature and high-pressure process when manufacturing a tire, for example, a vulcanization process, the electronic device module can be easily placed in the inner space of the tire, and can be freely placed wherever desired. .

Then, an elastic material can be injected using the mold part, and the mold part can be removed to easily form an elastic foam layer to fix the electronic device module.

Through this, the availability of various information using electronic device modules can be improved, and the ability to manufacture high-quality tires can be improved by improving the sound absorption function of transportation vehicles equipped with tires.

As such, the present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

Specific implementations described in the embodiments are examples and do not limit the scope of the embodiments in any way. Additionally, if there is no specific mention such as “essential,” “important,” etc., it may not be a necessary component for the application of the present invention.

In the specification of the embodiment (particularly in the claims), the use of the term “above” and similar referential terms may refer to both the singular and the plural. In addition, when a range is described in an example, the invention includes the application of individual values within the range (unless there is a statement to the contrary), and is the same as describing each individual value constituting the range in the detailed description. . Lastly, unless the order of the steps constituting the method according to the embodiment is clearly stated or there is no description to the contrary, the steps may be performed in an appropriate order. The embodiments are not necessarily limited by the order of description of the steps above. The use of any examples or illustrative terms (e.g., etc.) in the embodiments is merely for describing the embodiments in detail, and unless limited by the claims, the scope of the embodiments is not limited by the examples or illustrative terms. That is not the case. Additionally, 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 their equivalents.

100, 200: Tires
110, 210: Tread part
130, 230: body fly
180, 280: Sidewall
190, 290: Elastic foam layer
160, 260: Inner liner
RD: electronic device module

Claims (10)

Regarding tires installed and applied to vehicles,
A tread portion including at least an area in contact with the road surface when the vehicle is driven;
a sidewall adjacent to the tread portion and including an area spaced apart from the road surface;
An electronic device module corresponding to the tread portion or sidewall and disposed inside the tire, and
Comprising an elastic foam layer formed on the electronic device module to cover the electronic device module,
The elastic foam layer is formed through the mold portion and has an outer surface corresponding to the mold portion,
The elastic foam layer has a thickness between the outer surface and the inner surface of the tire,
The electronic device module is disposed on the inner surface of the tire corresponding to the starting point of the thickness of the elastic foam layer,
The electronic device module is disposed in an area of the elastic foam layer that corresponds to a convex counterpart in which an injection passage for injecting the elastic material of the mold part is formed when forming the elastic foam layer, and where the thickness of the elastic foam layer is thicker than that of the adjacent area. become a tire. According to claim 1,
A tire wherein the elastic foam layer is disposed in an area overlapping the tread portion. According to claim 1,
A tire wherein the elastic foam layer is disposed in an area overlapping the sidewall. According to claim 1,
A tire in which the elastic foam layer contains a foamable resin-based material. According to claim 1,
The tire includes an inner liner on the innermost side,
A tire wherein the elastic foam layer is disposed on the inner liner. According to claim 1,
The electronic device module includes one or more electronic devices and one or more antenna units connected to the electronic devices. According to clause 6,
The electronic device module is a tire including a cover layer that covers at least one surface of the electronic device. A tire spare member preparation step including preparing a tire spare member including at least a tread portion and a sidewall;
An electronic device module arrangement step of disposing an electronic device module in an area of an inner space of the tire spare member; and
Injecting a material for forming an elastic foam layer into the inner space of the tire spare member,
The step of injecting a material for forming the elastic foam layer includes,
disposing a mold part in the inner space of the tire spare member to cover the electronic device module;
A tire manufacturing method comprising injecting a material for forming the elastic foam layer through a penetrating injection passage formed in a convex counterpart, which is an area that protrudes toward the inner space of the tire spare member among the areas of the mold part. . According to clause 8,
A tire manufacturing method further comprising curing the material for forming the elastic foam layer after injecting it. According to clause 8,
A tire manufacturing method comprising: the tire spare member prepared in the step of preparing the tire spare member has undergone a vulcanization process.

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