KR20230049239A - Capsule type rfid tag and tire comprising the same - Google Patents

Abstract

One embodiment of the present invention is a tread portion, a sidewall portion extending from the tread portion, a bead portion provided at an end of the sidewall portion, a steel belt portion disposed under the tread portion, and a body disposed under the steel belt portion. A ply and an inner liner positioned below the body ply to maintain internal air pressure, and the steel belt portion is disposed under the tread portion and includes a first synthetic resin coating layer coated with a synthetic resin on a portion of both ends. A tire comprising a first belt layer is provided.

Description

Capsule type RFID tag and tire including the same {CAPSULE TYPE RFID TAG AND TIRE COMPRISING THE SAME}

Embodiments of the present invention relate to a capsule type RFID tag and a tire including the same.

An RFID tag stores information about a product for product identification, and can be used for product management by being attached to the exterior of a product or a packaging box of the product. In particular, since the RFID tag provides product information using radio frequency, it has a wider recognition range and is easier to recognize than a barcode label that requires an optical reader.

In general, an RFID tag may include a base board, a base film to which an antenna and a chip are attached, and a cover film protecting the base film. Here, the cover film may be attached on the base film through an adhesive, and the base film may be attached to the exterior of the product or the packaging box of the product.

The RFID tag attached to such a tire is attached to a portion adjacent to the deformation prevention ring on the inner surface of the tire, and is used to manage only the outer shape of the tire from production to delivery. Since an antenna recognition error may occur when the RFID tag is attached close to the deformation prevention ring made of metal, it must be attached to the inner surface of the tire so as to be away from the deformation prevention ring. However, as the separation distance from the anti-deformation ring of the RFID tag increases, the chip may be damaged due to vibration of the road surface or pressure change inside the tire when the tire is mounted on the vehicle and driven.

Embodiments of the present invention are aimed at providing a capsule-type RFID tag for reducing damage to an RFID chip and improving durability, and a tire including the same.

One embodiment of the present invention provides a capsule type RFID tag including an RFID chip and a capsule member made of a material that surrounds the RFID chip and melts at a preset temperature or higher.

In one embodiment of the present invention, the capsule member is made of a material that melts at a preset temperature or higher, and includes a cover layer forming an accommodation space for accommodating the RFID chip therein, and accommodating the cover layer. The space may be filled with gas.

In one embodiment of the present invention, the preset temperature may be equal to or higher than a temperature range of a tire curing process.

In one embodiment of the present invention, a support member supporting between the cover layer and the RFID chip may be further included.

In one embodiment of the present invention, the capsule member is made of a material that is cured at a preset temperature or higher, and includes a cover layer forming an accommodation space for accommodating the RFID chip therein, and the accommodation space includes It can be filled with a volatile liquid material that vaporizes when heated.

One embodiment of the present invention, a tread portion, a sidewall portion extending from the tread portion, a bead portion provided at an end of the sidewall portion, and a capsule type disposed on at least one of the tread portion, the sidewall portion, and the bead portion. Provided is a tire including an RFID tag, wherein the capsule type RFID tag includes an RFID chip and a capsule member surrounding the RFID chip and made of a material that melts at a preset temperature or higher. .

In one embodiment of the present invention, the capsule member is made of a material that melts at a preset temperature or higher, and includes a cover layer forming an accommodation space for accommodating the RFID chip therein, and accommodating the cover layer. The space may be filled with gas.

In one embodiment of the present invention, the preset temperature may be equal to or higher than a temperature range of a tire curing process.

In one embodiment of the present invention, a support member supporting between the cover layer and the RFID chip may be further included.

In one embodiment of the present invention, the capsule member is made of a material that is cured at a preset temperature or higher, and includes a cover layer forming an accommodation space for accommodating the RFID chip therein, and the accommodation space includes It can be filled with a volatile liquid material that vaporizes when heated.

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

The capsule type RFID tag according to embodiments of the present invention stably protects an RFID chip using a capsule member made of a material that melts at a preset temperature, so that it can be placed anywhere in a tire.

The capsule type RFID tag according to the embodiments of the present invention can be placed at a desired tire position away from the existing limited arrangement position, and can be protected from impact during driving of the tire through the inner space, thereby improving durability. can be implemented

1 is a perspective view showing a tire according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1 .
3 is an enlarged cross-sectional view of a part of FIG. 2 .
4A and 4B are diagrams for explaining a process of disposing a capsule type RFID tag inside a tire according to an embodiment of the present invention.
5 and 6 are views for explaining a capsule type RFID tag according to another embodiment of the present invention.
7 is a diagram illustrating an embodiment in which a capsule type RFID tag according to an embodiment of the present invention is disposed in a tire.

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 detailed description. Effects and features of the present invention, and methods for achieving them will become clear with reference to the embodiments described later in detail together 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, 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 description. 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 the illustrated bar.

Hereinafter, tires according to embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a tire according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1, and FIG. 3 is a partially enlarged cross-sectional view of FIG.

1 to 3 , the tire 100 includes a tread part 110, a sidewall part 120, a bead part 130, and a capsule type RFID tag 20. In addition, the tire 100 may include a body ply 140, an inner liner 145, and a steel belt portion (not shown).

In general, the tires constituting the wheel share and support the entire weight of the vehicle together with the wheel, and provide torque during driving and braking, impact from the road surface, centrifugal and centripetal force during turning, and lateral force generated when the vehicle is tilted. It is built to last long enough. In particular, the tire is inserted into the rim of the wheel, rotates integrally, absorbs shock from the road surface, and enables driving or braking of the vehicle in contact with the road surface.

The tread part 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 unit 110 , tread patterns 114 for steering safety, traction, and braking properties and blocks 116 partitioned by the tread patterns 114 may be positioned. The tread patterns 114 may include a plurality of grooves for drainage and sipes for improving traction and braking power when driving on a wet road. The grooves may include circumferential grooves coinciding with the driving direction of the vehicle and transverse grooves between the circumferential grooves. Sipes are formed in blocks and may be grooves with a smaller size than grooves. Sipes can increase the driving force and braking force of the tire 1 by absorbing moisture and breaking the water film when driving on a wet road. The blocks 116 are areas that occupy most of the tread portion 110 and directly contact the ground to transmit driving and braking forces of the vehicle to the ground.

The sidewall portion 120 extends downward from the end of the tread portion 110 and is disposed. The sidewall portion 120 is a side portion of the tire 1, and can protect the carcass layer, provide lateral stability of the tire 1, and improve riding comfort by performing flexion and extension movements. In addition, the sidewall portion 120 serves to transmit engine torque received through the drive shaft to the tread portion 110 .

The bead part 130 is provided at the end of the sidewall part 120 and serves to mount the tire 1 on the rim. The bead unit 130 may include a bead core 131 and a bead filler 132 . The bead core 131 may be formed by twisting a plurality of rubber-coated steel wires, and the bead filler 132 may be rubber attached to the bead core.

The body ply 140 extends along the tread portion 110 , the sidewall portion 120 , and the bead portion 130 to form the skeleton of the tire 1 . 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 portion 130, an inner space surrounded by the body ply 140 may be created. The body ply 140 is turned up at the bead portion 130 and extends toward the sidewall portion 120, and an end portion 140E is connected to the body ply 140 to form an internal space. A bead core 131 and a bead filler 132 are disposed in the inner space. 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 belt cord formed by twisting a plurality of thin wires may also be used.

The inner liner 145 may be disposed inside the pneumatic tire 1 to prevent leakage of air and to maintain air pressure in the pneumatic tire 1 . The inner liner 145 may be formed of a rubber layer having excellent sealing properties. For example, the inner liner 145 may be made of high-density butyl rubber or the like.

The inner liner 145 may be disposed under the body ply 140 and extend to the bead portion 130 . The inner liner 145 may contact one surface of the body ply 140, and both ends may contact the bead portion 130.

A steel belt part (not shown) is disposed below the tread part 110, reduces road impact during vehicle driving, and protects the body ply 140.

Meanwhile, the capsule type RFID tag 20 may include an RFID chip 200 and a capsule member 210 .

Although not specifically shown, the RFID chip 200 may further include a substrate film and a circuit pattern disposed on the substrate film as well as the chip.

The base film is a base material on which a circuit pattern including an antenna is formed, and may be made of a material having heat resistance and pressure resistance, and having flexibility that is easily attached to a curved surface. For example, the base film may be made of polyimide, which is a thermosetting polymer film.

The circuit pattern may be created through an etching process after printing a conductive metal paste or depositing a metal thin film on a substrate film.

The circuit pattern may include an antenna pattern whose length is determined in proportion to the length of the wavelength of a radio wave so as to resonate with radio waves provided from an external transponder (RFID reader). In general, the shorter the wavelength of the radio wave, the shorter the length of the antenna pattern, and vice versa. As one embodiment of the present invention, the antenna pattern included in the circuit pattern may be formed in the shape of a meander line to reduce the area where the pattern is formed to be advantageous for miniaturization.

The RFID chip 200 including the above configuration is an element that communicates with the RFID writer to record various information necessary for the tire manufacturing process and inventory management process, and transmits the recorded information by communicating with the RFID reader. .

The capsule member 210 surrounds the RFID chip 200 and may be made of a material that melts at a predetermined first temperature or higher.

As an embodiment, the capsule member 210 is made of a material that melts at a preset first temperature or higher, and includes a cover layer 211 forming an accommodation space 212 accommodating the RFID chip 200 therein. can do.

Specifically, the cover layer 211 may be made of a material that melts at a preset first temperature equal to or higher than the temperature range of the tire curing process. The cover layer 211 may be made of a polymer resin material, but may be made of another material made of a material that melts at a specific temperature, of course.

Gas may be filled in the accommodating space 212 formed by the cover layer 211 . The capsule member 210 may perform a function of protecting the RFID chip 200 in a molding process of disposing and compressing the capsule type RFID tag 20 between half-finished products of a tire through the above structure.

Thereafter, when heat is applied to the cover layer 211 in the vulcanization process of the tire, it can be melted and absorbed into the surrounding rubber layer, and the gas inside can pass through the rubber and be discharged to the outside. Through this, a certain space is formed between the rubber layers of the tire, and the RFID chip 200 can be stably disposed therein even after the curing process. More details will be described later with reference to the drawings.

As another embodiment, the capsule member 210 may include a cover layer 211 formed of a material cured at a preset second temperature or higher and forming an accommodation space for accommodating the RFID chip 200 therein. there is. Here, the preset second temperature may be higher than room temperature and may be equal to or smaller than the temperature range of the tire curing process.

The accommodation space 212 formed in the cover layer 211 may be filled with a vaporizing liquid material that vaporizes when heated. The vaporizable liquid material may be a material that is liquid at room temperature and vaporizes and thermally expands at a temperature lower than the curing initiation temperature of the cover layer 211 .

Through this, the capsule member 210 may perform a function of protecting the RFID chip 200 in a molding process of disposing and compressing the capsule type RFID tag 20 between half-finished products of a tire.

Thereafter, when heat is applied to the cover layer 211 in the curing process of the tire, it is possible to secure an internal space while being cured, and the volatile liquid material accommodated in the accommodation space 212 of the cover layer 211 vaporizes and thermally expands, The cover layer 211 may be destroyed. As the cover layer 211 is destroyed, the vaporized liquid material vaporized inside can be discharged to the outside. As in one embodiment, a certain space is formed between the rubber layers of the tire, and the RFID chip (200 ) can be placed inside.

4A and 4B are diagrams for explaining a process of disposing the capsule type RFID tag 20 inside a tire according to an embodiment of the present invention.

Referring to FIG. 4A , a capsule type RFID tag 20 may be disposed between rubber layers of a tire. Since the capsule member 210 accommodating the RFID chip 200 inside is maintained in the capsule type RFID tag 20 at room temperature, the RFID chip 200 is prevented from being damaged even in the compression process such as finger pressing in the tire molding process. can do.

Referring to FIG. 4B , when the tire curing process proceeds, the capsule type RFID tag 20 may be heated to a certain temperature range required for the curing process. At this time, since the cover layer 211 is made of a material that melts at a temperature equal to or higher than the temperature range required in the tire curing process, it can be melted while forming a certain space. Thereafter, the gas filled in the receiving space of the cover layer 211 can be discharged to the outside of the tire, and the RFID chip 200 can be stably disposed in the inner space of the tire.

5 and 6 are views for explaining a capsule type RFID tag 20 according to another embodiment of the present invention.

Referring to FIGS. 5 and 6 , the capsule type RFID tag 20 may include an RFID chip 200 , a capsule member 210 and a support member.

Although not specifically shown, the RFID chip 200 may further include a substrate film and a circuit pattern disposed on the substrate film as well as the chip.

The capsule member 210 surrounds the RFID chip 200 and may be made of a material that melts at a predetermined first temperature or higher. As an embodiment, the capsule member 210 is made of a material that melts at a preset first temperature or higher, and includes a cover layer 211 forming an accommodation space 212 accommodating the RFID chip 200 therein. can do. Gas may be filled in the accommodating space 212 formed by the cover layer 211 .

As another embodiment, the capsule member 210 may include a cover layer 211 formed of a material cured at a preset second temperature or higher and forming an accommodation space for accommodating the RFID chip 200 therein. there is. The accommodation space 212 formed in the cover layer 211 may be filled with a vaporizing liquid material that vaporizes when heated.

The support member may perform a function of supporting between the cover layer 211 and the RFID chip 200 . Here, the support member may include a first support member 220 for fixing the position of the RFID chip 200 within the capsule member 210 .

The first support member 220 may be formed to extend in the long axis direction of the RFID chip 200 and may have a length extending to the edge of the capsule member 210 . Alternatively, the first support member 220 may be formed to be longer than the edge of the capsule member 210 and protrude. The first support member 220 may perform a function of fixing the position of the RFID chip 200 in a space formed inside the tire as shown in FIG. 4B.

The first support member 220 may be made of a material having rigidity. However, the present invention is not limited thereto, and the first support member 220 is made of a material having elasticity and can function so that the RFID chip 200 can respond flexibly according to the movement of the tire.

Meanwhile, as shown in FIG. 6 , the support member may further include a second support member 230 connected to the first support member 220 . The second support member 230 may be disposed along the edge of the capsule member 210, that is, along the cover layer 211. The first support member 220 may connect between the RFID chip 200 and the second support member 230 .

The capsule type RFID tag 20 can more stably fix the RFID chip 200 in the inner space of the tire even after the cover layer 211 is melted through the support member.

Meanwhile, although only a pair of support members disposed relative to the RFID chip 200 are shown in the drawing, more support members than this disposed in various directions may be included.

7 is a diagram showing an embodiment in which a capsule type RFID tag 20 according to an embodiment of the present invention is disposed in a tire.

Referring to FIG. 7, conventionally, the RFID chip is placed between the bead filler and the body ply to increase durability of the RFID chip, but the capsule type RFID tag 20 according to an embodiment of the present invention has the stability of the above-described structure. Due to this, it can be placed anywhere in the tire. In other words, the capsule type RFID tag 20 can be placed at a desired tire location away from the existing limited placement location, and can be protected from impact during driving of the tire through the inner space, thereby realizing an effect of improving durability. there is.

As such, the present invention has been described with reference to one embodiment shown in the drawings, but this is merely exemplary, and those skilled in the art will understand that various modifications and variations of the embodiment are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

1: tire
110: tread part
120: side wall
130: bead part
140: body fly
20: capsule type RFID tag
200: RFID chip
210: capsule member
220: first support member
230: second support member

Claims (10)

RFID chip; and
A capsule-type RFID tag comprising a capsule member made of a material that surrounds the RFID chip and melts at a temperature set in advance. According to claim 1,
The capsule member,
A cover layer made of a material that melts at a preset temperature or higher and forming an accommodation space for accommodating the RFID chip therein;
A capsule type RFID tag in which gas is filled in the receiving space of the cover layer. According to claim 2,
The previously set temperature is equal to or higher than the temperature range of the curing process of the tire. According to claim 2,
The RFID tag further comprising; a support member supporting between the cover layer and the RFID chip. According to claim 1,
The capsule member,
A cover layer made of a material cured at a preset temperature or higher and forming an accommodation space for accommodating the RFID chip therein;
The capsule-type RFID tag, wherein the accommodation space is filled with a volatile liquid material that vaporizes when heated. tread part;
a sidewall portion extending from the tread portion;
a bead portion provided at an end of the sidewall portion; and
A capsule-type RFID tag disposed on at least one of the tread part, the sidewall part, and the bead part;
The capsule type RFID tag,
RFID chip; and
A tire including a capsule-type RFID tag including a capsule member made of a material that surrounds the RFID chip and melts at a temperature set in advance. According to claim 6,
The capsule member,
A cover layer made of a material that melts at a preset temperature or higher and forming an accommodation space for accommodating the RFID chip therein;
A tire comprising a capsule-type RFID tag in which gas is filled in the receiving space of the cover layer. According to claim 7,
The preset temperature is equal to or higher than the temperature range of the curing process of the tire. According to claim 7,
A tire including a capsule type RFID tag, further comprising; a support member supporting between the cover layer and the RFID chip. According to claim 6,
The capsule member,
A cover layer made of a material that hardens at a preset temperature or higher and forming an accommodation space for accommodating the RFID chip therein;
A tire including a capsule-type RFID tag filled with a volatile liquid material that vaporizes when heated in the accommodation space.

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