Pneumatic tire

Abstract

A pneumatic tire includes a tire body and an electromagnetic tag disposed in the tire body. The tire body includes a bead composed of a plurality of metal wires and a bead filler located radially outward of the bead. The electromagnetic tag is disposed at a predetermined distance from an end portion of the bead filler.

Description

Technical Field

[0001] This disclosure relates to an inflatable tire. Background Technology

[0002] Recently, in the tire industry, the technology of attaching radio-frequency identification (RFID) tags to tires has been widely used to track tire manufacturing history, performance data, usage status, and more. Electromagnetic tags can use radio frequency to read and record tire information in a non-contact manner, thus greatly improving the efficiency of tire management. These tags are typically installed inside the tire and protected from external environmental influences, requiring reliable operation even under various physical stresses encountered during tire manufacturing and driving.

[0003] Traditional electromagnetic tags are typically embedded or attached inside the tire. For example, electromagnetic tags are usually attached to the surface of the tire liner or inserted into the tire's reinforcement layer.

[0004] However, if the electromagnetic tag is not positioned properly, it may be damaged by deformation or stress generated during driving, resulting in a decrease in the signal transmission and reception performance of the electromagnetic tag.

[0005] In particular, it is known that significant deformation occurs in the area near the belt of a tire. Therefore, if the electromagnetic tag is placed too close to the edge of the belt, it is likely to be damaged due to deformation. Conversely, if the electromagnetic tag is placed too far from the edge of the belt, there may be problems with reduced signal transmission and reception efficiency.

[0006] In addition, electromagnetic tags need to be protected from external environmental factors such as heat, moisture, and impact generated during tire vulcanization and driving. Traditionally, electromagnetic tags have been protected by coating them with rubber materials. However, differences in the physical and chemical properties between the coating material and other tire components can lead to reduced adhesion or decreased durability. Summary of the Invention

[0007] In view of the above, this disclosure provides an inflatable tire that prevents the electromagnetic tag from being damaged by tire deformation by separating the electromagnetic tag from the end of the bead filler (triangular rubber).

[0008] In addition, this disclosure also provides an inflatable tire that can prevent the electromagnetic tag from falling off or being damaged during tire vulcanization and driving by covering the outer surface of the electromagnetic tag with rubber.

[0009] According to one aspect of this disclosure, an inflatable tire is provided, comprising: a tire body; and an electromagnetic tag disposed within the tire body, wherein the tire body includes: a bead composed of a plurality of wires; and a bead filler located radially outside the bead, wherein the electromagnetic tag is configured to be spaced at a predetermined distance from the end of the bead filler.

[0010] Furthermore, the electromagnetic tag can have a predetermined width and be arranged to extend circumferentially along the tire, and the distance between the electromagnetic tag and the end of the bead filler can be less than the height of the bead filler.

[0011] Furthermore, the electromagnetic tag can be positioned within a range of 5 to 10 millimeters from the end of the bead filler.

[0012] Furthermore, the tire body may also include: a tire carcass arranged to be rolled up along the outside of the bead; and a liner supporting the tire carcass, wherein the electromagnetic tag is arranged on the exposed surface of the liner to be positioned within a range of 5 mm to 10 mm from the end of the bead filler.

[0013] Furthermore, the tire body may also include: a tire carcass arranged to be rolled up along the outside of the tire bead, wherein the tire carcass may include: a tire carcass main body portion disposed inside the tire bead; and a tire carcass turn-up portion rolled up from the tire carcass main body portion and extending to the outside of the tire carcass main body portion, wherein the electromagnetic tag may be disposed on the outer surface of the tire carcass turn-up portion.

[0014] Furthermore, the tire body may also include: a tread; and a belt supporting the inner side of the tread, the belt including: a belt body including metal cords; and belt top rubber coated on the outer surface of the belt body.

[0015] Furthermore, the electromagnetic tag may include: a tag body containing the same components as the tape body; and a tag top rubber coated on the outer surface of the tag body, wherein the tag top rubber and the tape top rubber may be formed of the same material.

[0016] Furthermore, the electromagnetic tag may also include a brass coating applied to the outer surface of the tag body, wherein the copper-zinc weight ratio of the brass coating is 62:38 to 70:30. According to embodiments of this disclosure, physical damage to the electromagnetic tag can be minimized even when the tire undergoes repeated deformation during driving.

[0017] Furthermore, according to embodiments of this disclosure, by covering the outer surface of the electromagnetic tag with rubber, it is possible to prevent the electromagnetic tag from falling off or being damaged during tire vulcanization and driving. Attached Figure Description

[0018] Figure 1This is a cross-sectional view of an inflatable tire according to a first embodiment of the present disclosure, showing a cross-section perpendicular to the tire's circumferential direction.

[0019] Figure 2 yes Figure 1 Enlarged view of section A.

[0020] Figure 3 yes Figure 1 Enlarged view of section B.

[0021] Figure 4 It is along Figure 1 Cross-sectional view of line IV-IV.

[0022] Figure 5 This is a cross-sectional view of an inflatable tire according to a second embodiment of the present disclosure, showing a cross-section perpendicular to the tire's circumferential direction.

[0023] Figure 6 It is along Figure 5 Cross-sectional view of line VI-VI.

[0024] Figure 7 This is a stress distribution diagram of an inflatable tire disclosed herein.

[0025] Figure 8 This is another stress distribution diagram of an inflatable tire disclosed herein. Detailed Implementation

[0026] The specific embodiments for implementing the technical ideas of this disclosure will now be described in detail with reference to the accompanying drawings.

[0027] In describing this disclosure, detailed descriptions of known configurations or functions may be omitted in order to clarify this disclosure.

[0028] When an element is described as being “connected,” “supported,” “entered,” “provided,” “conveyed,” or “in contact” with another element, it can be understood that the element can be directly connected to, supported, entered into, provided to, conveyed to, or in contact with another element, but there may be other elements in between.

[0029] The terminology used in this disclosure is for describing particular embodiments only and is not intended to limit the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions.

[0030] Furthermore, it should be noted that in this disclosure, the descriptions of upper side, lower side, side, etc., are based on the illustrations in the accompanying drawings and can be modified when the orientation of the corresponding object changes. For the same reason, some elements in the drawings are exaggerated, omitted, or shown schematically, and the dimensions of each element do not fully reflect the actual dimensions.

[0031] Various elements may be described using terms including ordinal numbers such as first and second, but the corresponding elements are not limited by these terms. These terms are only used to distinguish one element from another.

[0032] In this specification, it should be understood that terms such as “comprising” are intended to indicate the presence of a particular feature, region, integer, step, operation, element, combination and / or group thereof disclosed in the specification, and are not intended to exclude the possibility that one or more other particular features, regions, integers, steps, operations, elements, combinations and / or groups thereof may be present or added.

[0033] In this specification, the term "axial" refers to a direction parallel to the axis of rotation of the pneumatic tire, and the term "circumferential" refers to a direction extending along the periphery of the tread, perpendicular to the axial direction. The term "radial" refers to a direction perpendicular to the axis of rotation of the pneumatic tire. Unless otherwise stated, each of the above directions should be understood to include both positive and negative directions.

[0034] In the following description, the specific configuration of the pneumatic tire according to the first embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0035] refer to Figures 1 to 4 According to the first embodiment of this disclosure, the pneumatic tire 1 can be mounted on a vehicle and the vehicle moves by friction generated by the portion in contact with the road surface. The pneumatic tire 1 may include a tire body 10 and an electromagnetic tag 20.

[0036] The tire body 10 can support a vehicle. The tire body 10 may have a ring structure. The tire body 10 may have an elastic outer surface. The tire body 10 may include a bead 100, a bead filler 200, a carcass 300, an inner liner 400, a tread 500, and a belt 600.

[0037] The bead 100 provides rigidity to secure the tire body 10 to the rim. The bead 100 may include one or more wires, cords, core wires, etc. For example, the bead 100 may be composed of a bundle of wires.

[0038] The bead filler 200 can support the rigidity of the bead 100 itself and absorb impacts. The bead filler 200 can affect ride comfort and steering stability by absorbing the impacts applied to the bead 100 during driving. The bead filler 200 can be located radially outside the bead 100. Part of the periphery of the bead filler 200 can be covered by the tire carcass 300.

[0039] The carcass 300 can form the frame of the tire body 10. The carcass 300 can cover the outer side of the bead 100. The carcass 300 can be arranged to be rolled up along the outer side of the bead 100. The carcass 300 can support the belt 600. By forming a cord layer within the pneumatic tire 1, the carcass 300 can withstand loads and absorb shocks. The carcass 300 can be made of a material with high fatigue resistance to repeated flexing and stretching. For example, the carcass 300 can contain multiple fiber cords or wire cords. The carcass 300 can be formed as a single layer. Forming as a single layer means that the carcass 300 is formed as a single layer, rather than multiple layers separated in the radial direction of the tire. The carcass 300 can include a carcass body portion 310 and a carcass roll-up portion 320.

[0040] The tire body main portion 310 can be disposed radially inside the belt 600. The tire body main portion 310 can extend from the tread 500 of the tire body 10 to the bead 100. The tire body main portion 310 can support the belt 600. The tire body main portion 310 can be supported by the inner liner 400. The tire body main portion 310 can be disposed between the belt 600 and the inner liner 400. The tire body main portion 310 can form the frame of the tire body 10.

[0041] The carcass roll-up portion 320 can be rolled up to surround the bead 100. In this specification, "carcass 300 rolled up" means that the carcass 300, extending radially inward towards the tire, bends and extends radially outward towards the tire to surround the bead 100. In this case, the carcass 300 can extend in a U-shape to surround the bead 100. The carcass roll-up portion 320 can extend from the end of the carcass body portion 310 that reaches the bead 100. The carcass roll-up portion 320 can be rolled up from the carcass body portion 310 and extends towards the belt 600 outside the carcass body portion 310.

[0042] The inner liner 400 supports the tire body 300. The inner liner 400 maintains the air pressure inside the pneumatic tire 1. The inner liner 400 prevents air leakage from the pneumatic tire 1. The inner liner 400 is located on the innermost side of the pneumatic tire 1 and can be made of an airtight material. For example, the inner liner 400 can be made of high-density butyl rubber, etc.

[0043] The tread 500 is located on the outermost side of the pneumatic tire 1 and can directly contact the ground. Multiple grooves can be formed on the outer surface of the tread 500 to control the traction, braking force, or cornering performance of the pneumatic tire 1. These grooves can be recessed to a predetermined depth in the outer surface of the tread 500. For example, the shape and arrangement of the grooves can be formed into various patterns suitable for the intended use of the pneumatic tire 1.

[0044] The belt 600 can disperse external impacts applied to the outer surface of the tire body 10, such as impacts from the road surface. The belt 600 can be disposed between the tread 500 and the carcass 300. The belt 600 can be located radially inside the tread 500 and radially outside the carcass 300. The belt 600 can be supported by the carcass 300. The belt 600 can include a belt body 610 and a belt top rubber 620.

[0045] The belt body 610 can be used as a support structure for the belt 600. The belt body 610 can be formed in multiple layers. The belt body 610 can contain multiple metal wire cords. The belt body 610 can be made of a material with high fatigue resistance to repeated bending and stretching. The belt body 610 can be manufactured together with the belt top rubber 620 by a rolling process. The belt top rubber 620 can be coated on the outer surface of the belt body 610. The belt top rubber 620 can be used to enhance the adhesion between the belt body 610 and the raw rubber of the tire body 10. In every 100 parts by weight of raw rubber, the belt top rubber 620 can contain 4 to 10 parts by weight of zinc oxide and 0.5 to 2 parts by weight of cobalt salt. The specific surface area of ​​the zinc oxide in the belt top rubber 620 can be 4.0 m². 2 / g to 8.5m 2 / g.

[0046] The electromagnetic tag 20 can be disposed inside the tire body 10. The electromagnetic tag 20 can be spaced a predetermined distance d1 from the end of the bead filler 200. The distance between the electromagnetic tag 20 and the end of the bead filler 200 can be less than the height H of the bead filler 200. The electromagnetic tag 20 can have a predetermined width and can be arranged to extend circumferentially along the pneumatic tire 1. The electromagnetic tag 20 can be disposed within a range of 5 mm to 10 mm from the end of the bead filler 200. The electromagnetic tag 20 can be placed on the exposed surface of the inner liner 400. The electromagnetic tag 20 can be disposed on the exposed surface of the inner liner 400 within a range of 5 mm to 10 mm from the end of the bead filler 200. The electromagnetic tag 20 can provide product information of the pneumatic tire 1 and can identify the stored product information from the outside. The electromagnetic tag 20 may include a tag body 21, a tag top rubber 22, and a brass coating 23.

[0047] The tag body 21 can store coded information for individual product identification of the tire. The tag body 21 may contain the same components as the belt body 610. The tag body 21 may contain the same wire mesh as the belt body 610. The tag body 21 may be a plate-shaped semiconductor. The tag body 21 may contain memory and an antenna. For example, the antenna of the tag body 21 may contain the same components as the belt body 610. The antenna of the tag body 21 may contain the same wire mesh as the belt body 610. The tag body 21 may be an IC chip capable of wireless transmission. The tag body 21 may be an RFID tag.

[0048] The label top rubber 22 can be coated onto the outer surface of the label body 21. The label top rubber 22 and the tape top rubber 620 can be formed from the same material. In every 100 parts by weight of the raw rubber of the tire body 10, the label top rubber 22 can contain 4 to 10 parts by weight of zinc oxide and 0.5 to 2 parts by weight of cobalt salt. The zinc oxide specific surface area of ​​the label top rubber 22 can be 4.0 m². 2 / g to 8.5m 2 / g. The hardness of the label top rubber 22 can be 69 to 72, with a tolerance range of ±2. The 300% modulus value of the label top rubber 22 can be 146 to 160, with a tolerance range of ±15%. The tensile strength of the label top rubber 22 can be 200 kgf / cm². 2 Up to 240 kgf / cm 2 The elongation of the rubber 22 on the top of the label can be 350% to 400%.

[0049] Brass coating 23 can be applied to the outer surface of the label body 21. Brass coating 23 can be located between the label body 21 and the label top rubber 22. The weight ratio of copper (Cu) to zinc (Zn) in brass coating 23 can be from 62:38 to 70:30.

[0050] In addition to the above configuration, a second embodiment of this disclosure may also be provided. Reference will be made below. Figure 5 and Figure 6 A second embodiment of the present invention will be described. In describing the second embodiment, the differences from the embodiments described above will be primarily described, and content identical to that described above will be omitted with reference to the above description.

[0051] refer to Figure 5 and Figure 6 According to the second embodiment of the present invention, the electromagnetic tag 20 can be disposed on the outer surface of the tire carcass roll-up portion 320. For example, when the electromagnetic tag 20 is disposed on the upper surface of the tire carcass roll-up portion 320, the electromagnetic tag can be placed at a position spaced at a predetermined distance from the end of the bead filler 200.

[0052] The operation and effects of a pneumatic tire with the above configuration will be described below.

[0053] refer to Figure 7 and Figure 8 In the embodiments of this disclosure, since the electromagnetic tag 20 is placed in a position with relatively low stress distribution in the tire body 10, physical damage to the electromagnetic tag 20 can be minimized even if the tire is repeatedly deformed during driving.

[0054] By covering the outer surface of the electromagnetic tag 20 with rubber, it is possible to prevent the electromagnetic tag 20 from falling off or being damaged during the tire vulcanization process and while driving.

[0055] The brass coating 23 is located between the label body 21 and the label top rubber 22, which are made of different materials, thereby enhancing the adhesion between the label body 21 and the label top rubber 22.

[0056] The examples of this disclosure have been described above as specific embodiments, but these are merely examples, and this disclosure is not limited thereto. It should be interpreted with the broadest scope in accordance with the technical spirit disclosed in this specification. Those skilled in the art can combine / replace the disclosed embodiments to achieve layouts of forms not disclosed, but this will not depart from the scope of this disclosure. Furthermore, those skilled in the art can readily make changes or modifications to the disclosed embodiments based on this specification, and obviously, such changes or modifications also fall within the scope of this disclosure.

Claims

1. A pneumatic tire, comprising: Tire body; as well as An electromagnetic tag is installed inside the tire body. The tire body includes: Tire bead, composed of multiple metal wires; and Bead filler, located radially outside the bead, and The electromagnetic tag is configured to be spaced at a predetermined distance from the end of the bead filler.

2. The pneumatic tire according to claim 1, wherein, The electromagnetic tag has a predetermined width and is arranged to extend circumferentially along the tire. The distance between the electromagnetic tag and the end of the bead filler is less than the height of the bead filler.

3. The pneumatic tire according to claim 1, wherein, The electromagnetic tag is positioned within a range of 5 to 10 millimeters from the end of the bead filler.

4. The pneumatic tire according to claim 2, wherein, The tire body also includes: The tire carcass is arranged to be rolled up along the outside of the bead; and The inner liner supports the tire body. The electromagnetic tag is disposed on the exposed surface of the liner, positioned within a range of 5 to 10 millimeters from the end of the bead filler.

5. The pneumatic tire according to claim 2, wherein, The tire body also includes a tire carcass arranged to be rolled up along the outside of the tire bead. The fetal body includes: The main body of the tire is disposed inside the tire bead; and The tire carcass roll-up portion rolls up from the main body of the tire carcass and extends to the outside of the main body of the tire carcass. The electromagnetic tag is disposed on the outer surface of the rolled-up portion of the tire body.

6. The pneumatic tire according to claim 1, wherein, The tire body also includes: Tire tread; and The belt supports the inner side of the tire tread. The band includes: The belt body includes metal wire cords; and The top rubber is coated on the outer surface of the belt body.

7. The pneumatic tire according to claim 6, wherein, The electromagnetic tag includes: The tag body includes the same components as the tape body; and The rubber on top of the label is coated on the outer surface of the label body, and The rubber on the top of the label and the rubber on the top of the strip are made of the same material.

8. The pneumatic tire according to claim 7, wherein, The electromagnetic tag also includes a brass coating applied to the outer surface of the tag body, and The copper-zinc weight ratio of the brass coating is 62:38 to 70:30.

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