KR20220159824A - Tire and method for detection falure of tire - Google Patents

Abstract

The present invention relates to a tire and a method for sensing abnormality of the tire. The tire according to one embodiment of the present invention comprises: a tread extending along the circumferential direction of the tire; a rim disposed at the interior of the tread; and a three-dimensional distance sensor disposed on the rim toward the inside surface of the tread. An objective of the present invention is to provide the tire which can quickly confirm that a problem has occurred in the tire, and the method for sensing the abnormality of the tire.

Description

Tire and tire abnormality detection method {TIRE AND METHOD FOR DETECTION FALURE OF TIRE}

The present invention relates to a tire and a method for detecting an anomaly in a tire, and more particularly, to a tire and a method for detecting an anomaly in a tire for securing driving safety of a tire.

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. However, when sharp foreign substances, such as screws, are embedded in the tread of the tire during driving, the inner liner may be punctured, through which the air of the tire may escape little by little from the tire.

At this time, a drop in air pressure occurs in the tire, and the air pressure inside the tire can be measured through the tire air pressure sensor (TPMS), but it can only be determined that there is something wrong with the air pressure inside the tire, specifically in which part of the tire for some reason. There is a problem that is difficult to pinpoint exactly what caused the problem.

In addition, if the inner liner of a tire is pierced while driving, it is physically difficult to determine whether the tire is pierced due to driving noise, and if the air pressure decreases gently, it is difficult to recognize that a problem has occurred with only the tire air pressure sensor. can

An object of the present invention is to provide a tire and a method for detecting an abnormality in a tire that can quickly confirm that a problem has occurred in a tire when a foreign substance is embedded in the tire.

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; a rim disposed inside the tread; and a three-dimensional distance sensor disposed on the rim toward the inner surface of the tread.

In the tire according to an embodiment of the present invention, an inner liner is disposed on the innermost side of the tread, and the 3D distance sensor may sense the inner side of the inner liner.

In the tire according to an embodiment of the present invention, the 3D distance sensor may be disposed on a surface portion of the rim facing the tread.

In the tire according to an embodiment of the present invention, the rim may be formed along the circumferential direction of the tire, and a plurality of 3D distance sensors may be disposed along the circumferential direction of the rim.

In the tire according to an embodiment of the present invention, four 3D distance sensors may be disposed along the circumferential direction of the rim at 90 degree intervals based on the center of the rim.

In the tire according to an embodiment of the present invention, three 3D distance sensors may be disposed at intervals of 120 degrees based on the center of the rim along the circumferential direction of the rim.

In the tire according to an embodiment of the present invention, a protrusion may be formed on a central surface portion of the rim, and the 3D distance sensor may be disposed at an upper end of the protrusion.

In the tire according to an embodiment of the present invention, a triangular protrusion protruding in a triangular shape is formed on a central surface portion of the rim, and the 3D distance sensor may be disposed on two protruding surfaces of the triangular protrusion, respectively.

In the tire according to an embodiment of the present invention, the protruding height h of the protruding portion may be a distance between an imaginary line connecting end portions of the inner liner and the surface portion of the rim.

A method for detecting an anomaly of a tire according to an embodiment of the present invention includes checking whether an inner surface of a tread is irregular through a 3D distance sensor; transmitting information on the irregular surface of the inner surface of the tread to the vehicle when the 3D distance sensor detects that the inner surface of the tread is irregular; and informing the occupants of irregular surface information on the inner surface of the tread, in the vehicle.

In the method for detecting an abnormality of a tire according to an embodiment of the present invention, in the step of checking whether or not the inner surface of the tread is irregular through the 3D distance sensor, the inner surface of the tread may be the inner surface of the inner liner.

In the method for detecting an abnormality of a tire according to an embodiment of the present invention, the step of informing the occupant of the surface information of the inner surface of the tread includes informing the occupant of irregular surface occurrence information on the inner surface of the tread through a display mounted on the vehicle. steps may be included.

In the tire abnormality detection method according to an embodiment of the present invention, the step of notifying the occupant of irregular surface generation information on the inner surface of the tread through a display mounted on the vehicle includes: position information of the irregular surface portion on the inner surface of the tread It may further include the step of notifying.

In the tire abnormality detection method according to an embodiment of the present invention, the step of checking whether the inner surface of the tread is irregular, the step of transmitting the irregular surface information to the vehicle, and the step of informing the occupant of the irregular surface information from the vehicle are all can be done in real time.

In the method for detecting an abnormality of a tire according to an embodiment of the present invention, in the step of checking whether the inner surface of the tread is irregular through the 3D distance sensor, the 3D distance sensor confirms whether the inside of the tread is irregular. can include

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.

In the tire according to an embodiment of the present invention, by detecting an irregular shape inside the tire using a 3D distance sensor and quickly checking whether foreign substances are embedded in the tire or whether the inner surface of the tire is damaged, after detecting an abnormality in the tire, It is possible to provide the effect of securing the driving safety of tires through prompt measures.

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 3D distance sensor according to an embodiment of the present invention, in part AA′ of FIG. 2 .
FIG. 4 is a cross-sectional view showing the inside of a tire equipped with a 3D distance sensor according to an embodiment of the present invention, which is part BB' of FIG. 2 .
FIG. 5 is a cross-sectional view of the inside of a tire equipped with a 3D distance sensor according to another embodiment of the present invention, which is part BB' of FIG. 2 .
6 is a section AA′ of FIG. 2, which is a cross-sectional view showing the inside of a tire equipped with a 3D distance sensor on the side of a triangular protrusion according to another embodiment of the present invention.
7 is a cross-sectional view of the inside of a tire equipped with a 3D distance sensor on a protruding part according to another embodiment of the present invention, which is AA' of FIG. 2 .
8 is a flowchart illustrating a method for detecting a tire abnormality according to an embodiment of the present invention.

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 4 .

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 3D distance sensor according to an embodiment of the present invention, taken in line A-A' of FIG. 2 . FIG. 4 is a cross-sectional view of the inside of a tire equipped with a 3D distance sensor according to an embodiment of the present invention, taken in part BB' of FIG. 2 .

1 to 4, a tire according to an embodiment of the present invention includes a tread 110 extending along the circumferential direction of the tire 100, a rim 200 disposed inside the tread 110, and A three-dimensional distance sensor 300 disposed on the rim 200 toward the inner surface of the tread 110 is included.

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. have. 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, the 3D distance sensor 300 disposed toward the inner surface of the tread 110 may be disposed on the rim 200 . The 3D distance sensor 300 may be disposed on the surface of the rim 200 . The 3D distance sensor 300 may be disposed at the center of the surface of the rim 200 . The 3D distance sensor 300 may sense the inner surface of the inner liner 170 facing the surface of the rim 200 .

The 3D distance sensor 300 may detect irregularities on the inner surface of the inner liner 170 . That is, whether or not there is an irregular shape on the inner surface of the tire can be detected through the 3D distance sensor 300, and through the 3D distance sensor 300, the position of the irregularly shaped part on the inner surface of the tire, the size of the irregular shape, etc. Damage information on the inner surface of the tire can be easily and quickly obtained.

The 3D distance sensor 300 according to an embodiment of the present invention may be a sensor for obtaining the shape or position of a 3D object. In this case, the 3D distance sensor 300 may be a non-contact 3D distance sensor using an optical method. Non-contact 3D distance sensor by optical method is divided into time propagation method that measures the distance from the propagation time from observation point to object and distance measuring method by optical triangulation. It can be useful for detecting whether or not the inner surface of the inner liner 170 is damaged.

If a tire is pierced or damaged by a foreign substance while driving, it may be difficult to transmit abnormal noise that may occur in the tire while driving to the occupant, and if the air pressure decreases slowly, only the tire pressure sensor (TPMS) can accurately indicate that a problem has occurred in the tire. can be difficult to recognize.

At this time, by quickly detecting an irregular shape inside the tire using the 3D distance sensor 300 according to an embodiment of the present invention, it is possible to quickly check tire damage information such as a foreign substance stuck in the tire or a hole in the tire.

In addition, when using the 3D distance sensor 300 according to an embodiment of the present invention, not only the tread 110 but also irregular shape changes inside the tire can be sensed. For example, when foreign matter penetrates the sidewall 120, it can lead to tire bursting and cause a large-scale accident. ) portion can also be detected, it is possible to quickly grasp the tire bursting phenomenon in the sidewall 120 portion and prevent the possibility of a large-scale accident due to tire bursting.

In this way, the irregular shape inside the tire can be detected through the 3D distance sensor 300, and the irregular shape information inside the tire is quickly transmitted to prevent the risk of accidents in driving due to tire damage in advance, and according to prompt measures The driving stability of the tire can be improved.

According to one embodiment of the present invention, the rim 200 may be formed along the circumferential direction of the tire 100, and a plurality of 3D distance sensors 300 may be disposed along the circumferential direction of the rim 200. Referring to FIG. 4 , four 3D distance sensors 300 may be disposed along the circumferential direction of the rim 200 at 90-degree intervals based on the center of the rim 200 .

Since a plurality of 3D distance sensors 300 are disposed along the circumferential direction of the tire, the entire inner surface of the tire can be a sensing target. That is, the inner surfaces of the rim 200 and the tread 110 rotate 360 degrees and are disposed to face each other. When the 3D distance sensor 300 is disposed only on one side of the rim 200, the 3D distance sensor 300 It may be difficult to determine the irregular shape of the inner surface of the tread 110 in the opposite part to the arranged part. Therefore, according to the present embodiment, in order to detect whether or not the irregular surface shape of all inner surfaces of the tread 110 formed at 360 degrees exists, the 3D distance sensors 300 are arranged at intervals of 90 degrees to determine the shape of the inner surface of the tread 110. can detect

Hereinafter, a tire in which a 3D distance sensor is installed according to another embodiment of the present invention will be described with reference to FIG. 5 .

FIG. 5 is a cross-sectional view of the inside of a tire equipped with a 3D distance sensor according to another embodiment of the present invention, taken in part BB' of FIG. 2 .

The 3D distance sensor 300 may detect irregularities on the inner surface of the inner liner 170 . That is, whether or not there is an irregular shape on the inner surface of the tire can be detected through the 3D distance sensor 300, and through the 3D distance sensor 300, the position of the irregularly shaped part on the inner surface of the tire, the size of the irregular shape, etc. Damage information on the inner surface of the tire can be easily and quickly obtained.

The 3D distance sensor 300 according to an embodiment of the present invention may be a sensor for obtaining the shape or position of a 3D object. In this case, the 3D distance sensor 300 may be a non-contact 3D distance sensor using an optical method. Non-contact 3D distance sensor by optical method is divided into time propagation method that measures the distance from the propagation time from observation point to object and distance measuring method by optical triangulation. It can be useful for detecting whether or not the inner surface of the inner liner 170 is damaged.

If a tire is pierced or damaged by a foreign substance while driving, it may be difficult to transmit abnormal noise that may occur in the tire while driving to the occupant, and if the air pressure decreases slowly, only the tire pressure sensor (TPMS) can accurately indicate that a problem has occurred in the tire. can be difficult to recognize.

At this time, by quickly detecting an irregular shape inside the tire using the 3D distance sensor 300 according to an embodiment of the present invention, it is possible to quickly check tire damage information such as a foreign substance stuck in the tire or a hole in the tire.

In addition, when using the 3D distance sensor 300 according to an embodiment of the present invention, not only the tread 110 but also irregular shape changes inside the tire can be sensed. For example, when foreign matter penetrates the sidewall 120, it can lead to tire bursting and cause a large-scale accident. ) portion can also be detected, it is possible to quickly grasp the tire bursting phenomenon in the sidewall 120 portion and prevent the possibility of a large-scale accident due to tire bursting.

In this way, the irregular shape inside the tire can be detected through the 3D distance sensor 300, and the irregular shape information inside the tire is quickly transmitted to prevent the risk of accidents in driving due to tire damage in advance, and according to prompt measures The driving stability of the tire can be improved.

According to one embodiment of the present invention, the rim 200 may be formed along the circumferential direction of the tire 100, and a plurality of 3D distance sensors 300 may be disposed along the circumferential direction of the rim 200. Referring to FIG. 5 , three 3D distance sensors 300 may be disposed at intervals of 120 degrees based on the center of the rim 200' along the circumferential direction of the rim 200'.

Since a plurality of 3D distance sensors 300 are disposed along the circumferential direction of the tire, the entire inner surface of the tire can be a sensing target. That is, the inner surfaces of the rim 200 and the tread 110 rotate 360 degrees and are disposed to face each other. When the 3D distance sensor 300 is disposed only on one side of the rim 200, the 3D distance sensor 300 It may be difficult to determine the irregular shape of the inner surface of the tread 110 in the opposite part to the arranged part. Therefore, according to the present embodiment, in order to detect whether or not the irregular surface shape of all the inner surfaces of the tread 110 formed at 360 degrees, three 3D distance sensors 300 are arranged at intervals of 120 degrees, and the tread 110 The inner surface shape can be detected.

The specifications of the tire 100 may be different from each other, and the size of the rim 200' may also be different from each other. As shown in FIG. 5, when the size of the rim 200' is relatively smaller than the size of the rim 200 shown in FIG. 4, even if only three 3D distance sensors 300 are disposed at intervals of 120 degrees, It is possible to detect whether all of the inner surfaces of the tread 110 have irregular shapes.

Hereinafter, referring to FIG. 6 , a tire in which triangular protrusions are formed on a rim according to another embodiment of the present invention will be described.

FIG. 6 is a cross-sectional view of the inside of a tire equipped with a 3D distance sensor on the opposite side of a triangular protrusion according to another embodiment of the present invention, taken along line A-A' of FIG. 2 .

According to another embodiment of the present invention, a protrusion 210 may be formed on a central surface of the rim 200, and a 3D distance sensor 300 may be disposed on an upper end of the protrusion 210. Referring to FIG. 6 , a triangular protrusion 211 protruding in a triangular shape is formed on the central surface of the rim 200, and the three-dimensional distance sensors 300a and 300b are respectively formed on the two protruding surfaces of the triangular protrusion 211. can be placed.

Referring to FIG. 6 , both lower ends of the tread 110 may have a concave shape protruding inward toward the surface of the rim. Accordingly, it may be difficult to detect the concavely protruding portion of the tread 110 with only one 3D distance sensor 300 . Therefore, according to another embodiment of the present invention, by disposing three-dimensional distance sensors 300a and 300b on both sides of the triangular protrusion 211, it is possible to detect irregular shapes on both sides of the inner surface of the tread 110, respectively. The ability to detect regular shapes can be improved.

The 3D distance sensors 300a and 300b may detect irregularities on the inner surface of the inner liner 170 . That is, whether or not there is an irregular shape on the inner side of the tire can be detected through the 3D distance sensors 300a and 300b. Damage information on the inner surface of the tire, such as the size of the shape, can be easily and quickly acquired.

The 3D distance sensors 300a and 300b according to an embodiment of the present invention may be sensors for obtaining the shape or position of a 3D object. In this case, the 3D distance sensors 300a and 300b may be non-contact 3D distance sensors using an optical method. Non-contact 3D distance sensor by optical method is divided into time propagation method that measures the distance from the propagation time from observation point to object and distance measuring method by optical triangulation. It can be useful for detecting whether or not the inner surface of the inner liner 170 is damaged.

If a tire is pierced or damaged by a foreign substance while driving, it may be difficult to transmit abnormal noise that may occur in the tire while driving to the occupant, and if the air pressure decreases slowly, only the tire pressure sensor (TPMS) can accurately indicate that a problem has occurred in the tire. can be difficult to recognize.

At this time, by quickly detecting an irregular shape inside the tire using the three-dimensional distance sensors 300a and 300b according to an embodiment of the present invention, tire damage information such as foreign matter embedded in the tire or tire puncture can be quickly checked. have.

In addition, when the 3D distance sensors 300a and 300b according to an embodiment of the present invention are used, not only the tread 110 but also irregular shape changes inside the tire can be sensed. For example, when foreign matter penetrates the sidewall 120, it can lead to tire bursting and cause a large-scale accident. Since the irregular shape of the portion (120) can also be detected, the possibility of a large-scale accident due to a tire burst can be prevented in advance by quickly grasping the tire bursting phenomenon at the sidewall (120) portion.

In this way, the irregular shape inside the tire can be detected through the 3D distance sensors 300a and 300b, and information on the irregular shape inside the tire can be quickly transmitted to prevent the risk of a driving accident due to tire damage in advance, and take prompt action Accordingly, the running stability of the tire can be improved.

Referring to FIG. 7 , a tire having protrusions according to another embodiment of the present invention will be described.

FIG. 7 is a cross-sectional view of the inside of a tire equipped with a 3D distance sensor on a protruding part according to another embodiment of the present invention, taken along line A-A' of FIG. 2 .

According to another embodiment of the present invention, a protrusion 210 may be formed on a central surface of the rim 200, and a 3D distance sensor 300 may be disposed on an upper end of the protrusion 210. Referring to FIG. 7 , a protrusion 212 is formed on the central surface of the rim 200, a 3D distance sensor 300c is disposed on top of the protrusion 212, and the protrusion height (h) of the protrusion is May be the distance between the imaginary line L connecting the end portions 170a and 170b of the inner liner 170 and the surface portion of the rim 200 .

Referring to FIG. 7 , both lower ends of the tread 110 may have a concave shape protruding inward toward the surface of the rim. In addition, both ends of the rim 200 may be coupled to both lower ends of the tread 110 in a stepped state. Therefore, a height difference occurs between the central surface of the rim 200 and both lower ends of the tread 110 due to a step, and at the same time, a concave protruding part is formed inward at both lower ends of the tread 110, With only one 3D distance sensor 300 disposed on the central surface of the rim 200, it may be difficult to detect the entire area of the tread 110 having a height difference and a concave protrusion.

Therefore, according to another embodiment of the present invention, the protruding part 212 is formed with a protruding height h protruding as much as the part where the ends 170a and 170b of the inner liner 170 are located, and the three-dimensional distance sensor 300c By being disposed at the upper end of the protrusion 212, it is possible to overcome the step height formed at both ends of the rim and more easily detect the inner surface of the tread 110, and at the same time, the lower both ends of the tread 110 having concave protrusions formed The detection of can also be performed more easily.

The 3D distance sensor 300c may detect irregularities on the inner surface of the inner liner 170 . That is, whether or not there is an irregular shape on the inner side of the tire can be detected through the 3D distance sensor 300c, and the position of the irregularly shaped part on the inner side of the tire, the size of the irregular shape, etc., can be detected through the 3D distance sensor 300c. Damage information on the inner surface of the tire can be easily and quickly obtained.

The 3D distance sensor 300c according to an embodiment of the present invention may be a sensor for obtaining the shape or position of a 3D object. In this case, the 3D distance sensor 300c may be a non-contact 3D distance sensor using an optical method. Non-contact 3D distance sensor by optical method is divided into time propagation method that measures the distance from the propagation time from observation point to object and distance measuring method by optical triangulation. It can be useful for detecting whether or not the inner surface of the inner liner 170 is damaged.

If a tire is pierced or damaged by a foreign substance while driving, it may be difficult to transmit abnormal noise that may occur in the tire while driving to the occupant, and if the air pressure decreases slowly, only the tire pressure sensor (TPMS) can accurately indicate that a problem has occurred in the tire. can be difficult to recognize.

At this time, by quickly detecting an irregular shape inside the tire using the 3D distance sensor 300c according to an embodiment of the present invention, it is possible to quickly check tire damage information, such as a foreign substance stuck in the tire or a hole in the tire.

In addition, when using the 3D distance sensor 300c according to an embodiment of the present invention, not only the tread 110 but also irregular shape changes inside the tire can be sensed. For example, when foreign matter penetrates the sidewall 120, it can lead to tire bursting and cause a major accident. ) portion can also be detected, it is possible to quickly grasp the tire bursting phenomenon in the sidewall 120 portion and prevent the possibility of a large-scale accident due to tire bursting.

In this way, the irregular shape inside the tire can be detected through the 3D distance sensor 300c, and the irregular shape information inside the tire is quickly transmitted to prevent the risk of accidents in driving due to tire damage in advance, and according to prompt measures The driving stability of the tire can be improved.

Hereinafter, a method for detecting an abnormality in a tire according to an embodiment of the present invention will be described with reference to FIG. 8 . Details not shown in FIG. 8 may refer to FIGS. 1 to 7 .

8 is a flowchart illustrating a tire abnormality detection method according to an embodiment of the present invention.

Referring to FIG. 8 , the tire abnormality detection method according to an embodiment of the present invention includes determining whether the inner surface of the tread 110 is irregular through the 3D distance sensor 300 (S100), the 3D distance sensor When step 300 detects that the inner surface of the tread 110 is irregular, transmitting information on the irregular surface of the inner surface of the tread 110 to the vehicle C (S200), and the vehicle C informs the occupant of the tread It includes a step (S300) of notifying the irregular surface information of the side.

At this time, the step of notifying the occupant of the inner surface surface information of the tread (S300) may include a step of notifying the occupant of the irregular surface generation information of the inner surface of the tread 110 to the occupant through a display mounted on the vehicle C (S310). have.

In addition, the step of notifying the occupants of information on the occurrence of the irregular surface on the inner surface of the tread 110 through a display mounted on the vehicle (S310) further includes the step of notifying the location information of the irregular surface portion on the inner surface of the tread 110 (S320). can include

At this time, in the step of checking whether the inner surface of the tread 110 is irregular through the 3D distance sensor, the inner surface of the tread 110 may be the inner surface of the inner liner 170 .

As described above, the 3D distance sensor 300 confirming the irregular shape of the inner surface of the tread 110 quickly informs the occupants of the vehicle C of tire damage information, so that the occupants of the vehicle C can obtain the tire damage information. It is possible to rapidly acquire and quickly grasp damage information such as the location and degree of damage of the tire, and use various countermeasures according to the damage information.

According to an embodiment of the present invention, checking whether the inner surface of the tread is irregular (S100), transmitting the irregular surface information to the vehicle C (S200), and informing the vehicle C of the irregular surface information to the occupants (S300) may all be performed in real time.

In addition, according to an embodiment of the present invention, in the step of checking whether the inner surface of the tread is irregular through the 3D distance sensor 300, the 3D distance sensor 300 determines whether or not the inner surface of the tread as well as the inner surface of the tread is irregular. A confirmation step may be further included.

In this way, by quickly detecting an irregular shape inside a tire using the 3D distance sensor 300 according to an embodiment of the present invention, it is possible to quickly check tire damage information such as a foreign substance embedded in a tire or a tire being punctured. .

In addition, when using the 3D distance sensor 300 according to an embodiment of the present invention, not only the tread 110 but also irregular shape changes inside the tire can be sensed. For example, when foreign matter penetrates the sidewall 120, it can lead to tire bursting and cause a large-scale accident. ) portion can also be detected, it is possible to quickly grasp the tire bursting phenomenon in the sidewall 120 portion and prevent the possibility of a large-scale accident due to tire bursting.

In this way, the irregular shape inside the tire can be detected through the 3D distance sensor 300, and the irregular shape information inside the tire is quickly transmitted to prevent the risk of accidents in driving due to tire damage in advance, and according to prompt measures The driving stability of the tire can be improved.

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.

100: tire
110: tread
120: sidewall
130: bead part
140: Body play
150: belt layer
160: cap ply
170: inner liner
170a, 170b: inner liner end
200: rim
210: protrusion
211: triangular protrusion
212 protrusion
300: 3-dimensional distance sensor
300a, 300b: three-dimensional distance sensor
300c; 3D distance sensor
C: car
h: extrusion height
L: imaginary line

Claims (15)

tread extending along the circumferential direction of the tire;
a rim disposed inside the tread; and
A tire comprising a three-dimensional distance sensor disposed on the rim toward the inner surface of the tread. According to claim 1,
An inner liner is disposed on the innermost side of the tread,
The 3D distance sensor senses the inner surface of the inner liner. According to claim 1,
The 3D distance sensor is disposed on a surface portion of the rim facing the tread. According to claim 1,
The rim is formed along the circumferential direction of the tire,
A tire in which a plurality of three-dimensional distance sensors are disposed along a circumferential direction of the rim. According to claim 4,
The tire of claim 1 , wherein four 3D distance sensors are disposed along the circumferential direction of the rim at intervals of 90 degrees based on the center of the rim. According to claim 4,
The tire of claim 1 , wherein three 3-dimensional distance sensors are arranged at intervals of 120 degrees based on the center of the rim along the circumferential direction of the rim. According to claim 1,
A protrusion is formed on the central surface of the rim,
A tire in which the three-dimensional distance sensor is disposed at an upper end of the protrusion. According to claim 7,
A triangular protrusion protruding in a triangular shape is formed on the central surface portion of the rim,
The 3D distance sensor is disposed on each of the two protruding surfaces of the triangular protrusion. According to claim 7,
The protruding height (h) of the protruding portion is a distance between an imaginary line connecting the ends of the inner liner and the surface portion of the rim. Checking whether an inner surface of the tread is irregular through a 3D distance sensor;
transmitting information on the irregular surface of the inner surface of the tread to the vehicle when the 3D distance sensor detects that the inner surface of the tread is irregular; and
and notifying, by the vehicle, information about the irregular surface of the inner surface of the tread to the occupant. According to claim 10,
In the step of checking whether the inner surface of the tread is irregular through the three-dimensional distance sensor,
The inner surface of the tread is an inner surface of the inner liner. According to claim 10,
Informing the occupant of the inner surface surface information of the tread,
and notifying an occupant of irregular surface occurrence information on the inner surface of the tread through a display mounted on the vehicle. According to claim 12,
The step of notifying the occupant of the irregular surface generation information on the inner surface of the tread through a display mounted on the vehicle,
The method of detecting an abnormality of a tire further comprising notifying positional information of the irregular surface portion of the inner surface of the tread. According to claim 10,
The method of detecting an abnormality in a tire, wherein the step of checking whether the inner surface of the tread is irregular, the step of transmitting the irregular surface information to the vehicle, and the step of informing the occupant of the irregular surface information from the vehicle are all performed in real time. According to claim 10,
In the step of checking whether the inner surface of the tread is irregular through the 3D distance sensor, the 3D distance sensor checks whether the inside of the tread is irregular.

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