Storage body with functional component and tire

The container design with through holes and specific adhesive modulus enhances adhesion and sensing sensitivity by preventing air bubble entrapment and efficiently transmitting road impact, addressing adhesive failure and improving tire information measurement.

JP2025122846APending Publication Date: 2025-08-22THE YOKOHAMA RUBBER CO LTD
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Patent Information

Application Number
JP2024018547
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-02-09
Publication Date
2025-08-22

AI Technical Summary

Technical Problem

Existing containers with functional components attached to tire interiors face issues with adhesive failure due to trapped air bubbles, leading to detachment and sensing problems during tire operation.

Method used

A container design with through holes in the base allows air bubbles to escape, ensuring strong adhesion to the tire surface, and the use of a specific modulus ratio for the adhesive enhances sensing sensitivity by efficiently transmitting road impact to the functional components.

Benefits of technology

The design prevents adhesive failure and improves sensing sensitivity by maintaining tight adhesion and enhancing the transmission of road impact to the functional components, ensuring accurate tire information measurement.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a storage body with a functional component and a tire which devise the structure of a storage body, and thereby can enhance adhesive force of the storage body to a tire inner surface.SOLUTION: A storage body with a functional component includes a functional component 20 having a sensor function of detecting tire information, and a storage body 10 where the functional component 20 is stored, wherein the storage body 10 has a base part 11 provided with at least one through hole B, a storage part 13 for storing the functional component 20, and an opening 14 which communicates with the storage part 13 and takes the functional component 20 in and out, and a rear face 11y of the base part 11 is fixed to a tire inner surface by an adhesive X.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to a container with functional parts and a tire, and more particularly to a container with functional parts and a tire in which the adhesive strength of the container to the inner surface of the tire can be increased by devising the structure of the container. [Background technology]

[0002] In order to acquire tire information, functional components (e.g., a sensor unit including a sensor) are installed on the inner surface of a tire (see, for example, Patent Documents 1 and 2). When a container that houses such functional components is attached to the inner surface of the tire, the container can be fixed to the inner surface of the tire using an adhesive or the like to prevent the container from falling off. However, when attaching the container to the inner surface of the tire, air bubbles may get trapped and remain on the adhesive surface, which can cause the container to fall off while the tire is running or cause sensing problems. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6272225 [Patent Document 2] Special Publication No. 2016-505438 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a container with a functional part and a tire in which the adhesive strength of the container to the inner surface of the tire can be increased by devising the structure of the container. [Means for solving the problem]

[0005] In order to achieve the above object, the container with functional part of the present invention comprises a functional part having a sensor function for detecting tire information and a container in which the functional part is housed, the container having a base with at least one through hole, a housing section for housing the functional part, and an opening communicating with the housing section for inserting and removing the functional part, and the back surface of the base is fixed to the inner surface of the tire with adhesive X.

[0006] The tire of the present invention is characterized in that the functional component-equipped container is fixed to the inner surface of the tire. [Effects of the Invention]

[0007] In the present invention, the container has a base with at least one through hole, a container section for accommodating a functional component, and an opening that communicates with the container section and allows the functional component to be inserted and removed. When the container is attached to the inner surface of the tire, the back surface of the base is fixed to the inner surface of the tire with adhesive X, and any air bubbles that get between the inner surface of the tire and the back surface of the base (adhesive surface) are expelled through the through hole, so that the inner surface of the tire and the back surface of the base are tightly adhered to each other and sufficient adhesion can be ensured. This allows the container to be firmly adhered to the inner surface of the tire, preventing the container from peeling off (falling off) while driving.

[0008] In the present invention, the through-holes preferably include through-holes arranged in the bottom surface of the storage part. Because the back side of the storage part is an area where air bubbles tend to remain, providing through-holes in the bottom surface of the storage part can sufficiently achieve the effect of discharging air bubbles.

[0009] The total area of ​​the through holes S relative to the area S of the back surface of the base B The ratio is preferably in the range of 1.0% to 25.0%. By appropriately setting the size of the through holes in this way, it is possible to obtain a sufficient effect of discharging air bubbles without reducing the adhesive strength or rigidity of the container.

[0010] Modulus M of adhesive X at 50% elongation50X [MPa] and the modulus M of material A that constitutes the container at 50% elongation 50A [MPa] means 1.0≦M 50X / M 50A It is preferable to satisfy the relationship ≦10.0. By setting the modulus of adhesive X relatively high in this way, the impact received from the road surface when the tire contacts the ground is efficiently transmitted to the functional components, thereby increasing the sensing sensitivity of the functional components and improving tire information measurement performance. Sensing sensitivity refers to the ability to sensitively detect changes in physical quantities caused by impact from the road surface. Improving sensing sensitivity increases the peak-to-peak value of the output waveform, making it possible to accurately grasp the timing at which physical quantities change due to impact from the road surface.

[0011] The through hole in the bottom surface of the storage section has an adhesive filling area made of adhesive X, and the maximum height difference dH between this adhesive filling area and the area on the bottom surface of the storage section excluding the adhesive filling area X It is preferable that the height is 2.0 mm or less. By providing a through hole in the bottom surface of the storage section and setting the height of the adhesive filling area within an appropriate range, it is possible to obtain a sufficient effect of discharging air bubbles.

[0012] The through-hole in the bottom surface of the accommodation section has an adhesive filling area made of adhesive X, and the functional component has a housing that houses an electronic component and at least one film-like piezoelectric element fixed to the wall surface of the housing, and it is preferable that at least a part of the adhesive filling area overlaps with a projection area formed by projecting the piezoelectric element onto the outer surface of the housing when the functional component is housed in the accommodation section in an unloaded state. This maintains good contact between the adhesive filling area and the piezoelectric element, thereby improving the sensing sensitivity of the functional component.

[0013] The overlapping area between the adhesive filling area and the projected area of ​​the piezoelectric element is preferably 10% to 150% of the projected area of ​​the piezoelectric element, which ensures sufficient output from the piezoelectric element and increases the sensing sensitivity of the functional component.

[0014] In the present invention, it is preferable that a container for accommodating the functional parts is fixed to the back surface of the tread portion of the tire, and the functional parts are accommodated in the container. When such a container is used, the above-mentioned excellent effects can also be obtained.

[0015] The tire of the present invention is preferably a pneumatic tire, but may also be a non-pneumatic tire. In the case of a pneumatic tire, the interior thereof can be filled with air, an inert gas such as nitrogen, or other gases.

[0016] In the present invention, the modulus M at 50% elongation 50 is the tensile stress at 50% elongation measured in accordance with JIS K6251. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view showing an example of a functional component-equipped container according to an embodiment of the present invention; [Figure 2] 2 is a perspective view showing the interior of the functional component-equipped container of FIG. 1, with a portion thereof cut away. FIG. [Figure 3] 2 is a plan view showing the functional component-equipped container of FIG. 1; FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3. [Figure 5] 2 is an explanatory diagram of each area in the functional component-equipped container of FIG. 1; [Figure 6] 10(a) and 10(b) are explanatory diagrams illustrating a method for forming an adhesive filling region. [Figure 7] 10(a) to 10(c) are perspective views showing modified examples of the functional component-equipped container according to the embodiment of the present invention, with a portion of the container cut away to show the interior of the container. [Figure 8] 1 is a meridian cross-sectional view showing an example of a pneumatic tire according to an embodiment of the present invention. [Figure 9] FIG. 4 is a diagram showing an example of an output waveform from a piezoelectric element. DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings, in which: Figures 1 to 5 show a functional component-equipped container according to an embodiment of the present invention.

[0019] 1 to 5, the functional component 20 is housed inside a housing body 10. The housing body 10 has a flat base 11 fixed to the inner surface of the tire, a cylindrical side wall 12 protruding from the base 11, a housing section 13 formed by the base 11 and the side wall 12, and an opening 14 communicating with the housing section 13 and used to put in and take out the functional component 20. The housing section 13 is the internal region of the housing body 10 excluding the thickness of the opening 14.

[0020] The base 11 is provided with at least one through hole B penetrating through it in the thickness direction. In FIG. 2 , the through holes B include a through hole B1 (hereinafter also referred to as an inner through hole) provided inside the housing body 10 and a through hole B2 (hereinafter also referred to as an outer through hole) provided outside the housing body 10. Furthermore, an adhesive filling region made of adhesive X is formed in the through hole B of the base 11. Specifically, when the housing body 10 is attached to the tire inner surface, the back surface 11y of the base 11 is fixed to the tire inner surface with the adhesive X. At this time, the adhesive X is filled into the through hole B of the base 11, and the adhesive X hardens inside the through hole B, and then an adhesive filling region is formed. This adhesive filling region includes both a case where the inside of the through hole B is completely filled with adhesive X and a case where the inside of the through hole B is not completely filled with adhesive X. Hereinafter, when the term "adhesive filling region" is used, it refers to the adhesive filling region Rb (see, for example, the hatched portion in FIG. 5) of the through-hole B1 out of the through-holes B1 and B2.

[0021] The functional component 20 has a contact surface 21 that contacts the inner surface of the tire. That is, the contact surface 21 is the surface that contacts the bottom surface 13x of the housing 13. The functional component 20 also has a structure in which various electronic components are housed inside a housing 23. The electronic components can be configured to include various sensors, transmitters, receivers, control circuits, batteries, and the like for acquiring tire information. Tire information acquired by the sensors can include the internal temperature and pressure of the pneumatic tire, the amount of tread wear, and the like. For example, a temperature sensor or pressure sensor is used to measure the internal temperature and pressure. To detect the amount of tread wear of a tire, for example, a sensor element 22 made of a film-like piezoelectric element is disposed on the contact surface 21 of the functional component 20. The sensor element 22 detects an output voltage corresponding to tire deformation during driving, and the amount of tread wear is detected based on the output voltage. Alternatively, an acceleration sensor or magnetic sensor can be used. The sensor element 22 can be disposed on either the outer or inner surface of the housing 23.

[0022] The above-described container with functional parts has a base 11 provided with at least one through hole B, a container section 13 for accommodating the functional part 20, and an opening 14 that communicates with the container section 13 and is used to insert and remove the functional part 20. When the container 10 is attached to the inner surface of the tire, the back surface 11y of the base 11 is fixed to the inner surface of the tire with adhesive X, and any air bubbles that get between the inner surface of the tire and the back surface 11y (adhesive surface) of the base 11 are expelled through the through hole B, so that the inner surface of the tire and the back surface 11y of the base 11 are tightly adhered to each other, ensuring sufficient adhesion. This allows the container 10 to be firmly adhered to the inner surface of the tire, preventing the container 10 from peeling off (falling off) while the tire is running.

[0023] In particular, it is preferable that the through-holes B include through-holes B1 arranged on bottom surface 13x of storage section 13. Because the back side of storage section 13 is an area where air bubbles are likely to remain, providing through-holes B1 on bottom surface 13x of storage section 13 can sufficiently achieve the effect of discharging air bubbles.

[0024] In the above-mentioned functional component-equipped container, the total area S of the through holes B relative to the area S of the back surface 11y of the base 11 is B The ratio S B / S×100% is preferably in the range of 1.0% to 25.0%, more preferably in the range of 2.0% to 15.0%, and most preferably in the range of 3.0% to 10.0%. The area S of the back surface 11y of the base 11 means the entire area of ​​the back surface 11y of the base 11 including the through-holes B, and the total area S of the through-holes B B means the total area of ​​all the through holes B provided in the base 11. By appropriately setting the size of the through holes B in this way, it is possible to obtain a sufficient effect of discharging air bubbles without reducing the adhesive strength or rigidity of the housing body 10.

[0025] Here, the ratio S B If the ratio S / S is less than 1.0%, the through holes B are too small compared to the size of the base 11, and therefore, the bubble discharge effect cannot be sufficiently obtained. B If / S exceeds 25.0%, the through-holes B are too large compared to the size of the base 11, which tends to reduce the adhesive strength and rigidity of the housing body .

[0026] In addition, the modulus M of adhesive X at 50% elongation 50X [MPa] and the modulus M of the material A constituting the container 10 at 50% elongation 50A [MPa] means 1.0≦M 50X / M 50A It is preferable that the modulus M of the adhesive X satisfies the relationship of ≦10.0. 50X It is preferable to set the modulus M of adhesive X relatively high so that adhesive X is harder than material A. 50X By setting this to a relatively high value, the impact received from the road surface when the tire touches the ground is transmitted to the functional component 20 efficiently, thereby increasing the sensing sensitivity of the functional component 20 and improving the measurement performance of tire information.

[0027] In the above-mentioned functional part-equipped container, the maximum height difference dH between the adhesive filling area Rb and the area Ra obtained by excluding the adhesive filling area Rb from the bottom surface 13x of the container portion 13 X (See FIG. 4) is preferably 2.0 mm or less, and more preferably 1.0 mm or less. X is the difference in height measured in the thickness direction of the base 11 between the top surface of the adhesive filling region Rb and the bottom surface 13x of the storage section 13. In FIG. 4, the adhesive filling region Rb is formed higher than the bottom surface 13x of the storage section 13, but this is not limited to this. The adhesive filling region Rb may be formed lower than the bottom surface 13x of the storage section 13. In this case, the maximum height difference dH X is desirably set within the above range. By providing through-holes B1 in bottom surface 13x of storage section 13 and setting the height of adhesive filling region Rb within an appropriate range in this way, it is possible to obtain a sufficient effect of discharging air bubbles. In particular, when adhesive filling region Rb is formed higher than bottom surface 13x of storage section 13, adhesive filling region Rb presses contact surface 21 of functional component 20, thereby improving the sensing sensitivity of functional component 20.

[0028] 1 to 5, the adhesive filling region Rb is located at the center of the base 11, the sensor element 22 (piezoelectric element) is also located at the center of the bottom of the functional component 20, and the diameter of the sensor element 22 is configured to be larger than the diameter of the through-hole B1 (adhesive filling region Rb). In this case, the projection region Rc formed by projecting the sensor element 22 onto the outer surface of the housing 23 includes the adhesive filling region Rb as shown in Fig. 5. In other words, the adhesive filling region Rb and the projection region Rc of the sensor element 22 overlap.

[0029] In an unloaded state in which the functional component 20 is housed in the housing 10, it is preferable that at least a portion of the adhesive filling region Rb overlaps with the projection region Rc of the sensor element 22 (piezoelectric element), as described above. In this case, the adhesive filling region Rb is located below the sensor element 22. By arranging the adhesive filling region Rb and the projection region Rc of the sensor element 22 in this manner, good contact between the adhesive filling region Rb and the piezoelectric element is maintained, thereby improving the sensing sensitivity of the functional component 20.

[0030] With the above arrangement relationship satisfied, the overlapping area between the adhesive filling region Rb and the projection region Rc of the piezoelectric element is preferably 10% to 150% of the area of ​​the projection region Rc of the piezoelectric element, and more preferably 40% to 100%. By satisfying this relationship, sufficient output from the piezoelectric element can be ensured, thereby increasing the sensing sensitivity of the functional component 20.

[0031] A method for forming the adhesive filling region Rb will be described below. For example, when forming the adhesive filling region Rb that protrudes from the bottom surface 13x of the storage section 13, it can be formed using a core 30 shown in FIG. 6(a). This core 30 includes a main body 31 having a shape substantially identical to that of the storage section 13 of the housing body 10, a recess 32 provided at the bottom of the main body 31 and corresponding to the shape of the adhesive filling region Rb, and an air passage 33 that communicates with the recess 32 and allows air (air bubbles) to be discharged to the outside. The air passage 33 is provided so as to penetrate the core 30 in its height direction. As shown in FIG. 6(b), adhesive X is applied to the tire inner surface, and then the housing body 10 is attached on the adhesive X with the core 30 inserted into the storage section 13. Then, air is discharged from the air passage 33 as the adhesive X cures. After the adhesive X cures, the core 30 is removed from the housing body 10. This makes it possible to provide adhesive filling region Rb that protrudes from bottom surface 13x of storage section 13. Furthermore, when molding adhesive filling region Rb that is recessed from bottom surface 13x of storage section 13, it is possible to use core 30 that has a convex portion on the bottom of main body 31. In addition to the method of molding using such a core, adhesive filling region Rb can also be molded into a predetermined shape by cutting.

[0032] In the present invention, the through holes B may be provided only on the inside or only on the outside of the housing 10. Furthermore, the through holes B may be additionally provided in the side wall 12 in addition to the base 11. The planar shape and number of the through holes B are not particularly limited. In addition to the shape of the through holes B1 and B2 shown in FIG. 2 , other shapes may be used, such as a shape in which the through holes B1 and B2 have circular planar shapes of the same size, and the center of the through hole B1 is positioned off-center from the center of the housing 13, as shown in FIG. 7( a ), a shape in which the through hole B1 and each through hole B2 have circular planar shapes of different sizes, and a plurality of through holes B2 are arranged at intervals around the periphery of the side wall 12, as shown in FIG. 7( b ), and a shape in which the through hole B1 has a circular planar shape, each through hole B2 has a fan-shaped planar shape, and a plurality of through holes B2 are arranged at intervals around the periphery of the side wall 12, as shown in FIG. 7( c ). In the present invention, as shown in Figures 2 and 7(b) and (c), it is preferable that a through hole B1 is arranged in the central region of the bottom surface 13x of the accommodating section 13, and that an adhesive filling region Rb is present in the region below the sensor element 22 of the functional component 20.

[0033] Fig. 8 shows a pneumatic tire in which a container with functional parts is fixed to the inner surface of the tire. As shown in Fig. 8, the pneumatic tire has a tread portion 1 extending in the circumferential direction of the tire to form an annular shape, a pair of sidewall portions 2, 2 arranged on both sides of the tread portion 1, and a pair of bead portions 3, 3 arranged on the radially inner side of the sidewall portions 2.

[0034] A carcass layer 4 is mounted between the pair of bead portions 3, 3. This carcass layer 4 includes a plurality of reinforcing cords extending in the tire radial direction, and is folded back from the inside to the outside of the tire around a bead core 5 disposed in each bead portion 3. A bead filler 6 made of a rubber composition and having a triangular cross section is disposed on the outer periphery of the bead core 5.

[0035] On the other hand, multiple belt layers 7 are embedded on the outer peripheral side of the carcass layer 4 in the tread portion 1. These belt layers 7 include multiple reinforcing cords that are inclined with respect to the tire circumferential direction, and are arranged so that the reinforcing cords cross each other between the layers. In the belt layers 7, the inclination angle of the reinforcing cords with respect to the tire circumferential direction is set to a range of 10° to 40°, for example. Steel cords are preferably used as the reinforcing cords of the belt layers 7. At least one belt cover layer 8 is arranged on the outer peripheral side of the belt layer 7, with the aim of improving high-speed durability, and the reinforcing cords are arranged at an angle of, for example, 5° or less with respect to the tire circumferential direction. As the reinforcing cords of the belt cover layer 8, organic fiber cords such as nylon and aramid are preferably used.

[0036] The above-described tire internal structure is a typical example of a pneumatic tire, but is not limited to this.

[0037] In the pneumatic tire, a container 10 containing a functional part 20 having a sensor function for detecting tire information is installed on the back surface of the tread portion 1. Such a container with functional part is fixed to the back surface of the tread portion 1 of the tire with an adhesive X. [Example]

[0038] The tire size is 185 / 65R15, and the tire is equipped with a functional part and a housing body. The housing body has a base, a housing part, and an opening. The back surface of the base is fixed to the inner surface of the tire with adhesive X. 50A , the area of ​​the base of the container S, and the amount of adhesive X M 50X , presence or absence of through holes, radius of inner through holes, radius of outer through holes, total area of ​​through holes S B , ratio M 50X / M 50A , ratio S B / S, maximum height difference dH X Tires of Comparative Examples 1 and 2 and Examples 1 to 5 were manufactured with the values ​​set as shown in Table 1. The functional parts had a sensor function using a piezoelectric element as the sensor element, and the functional parts were attached to the back surface of the tread portion via a container.

[0039] Regarding the "radius of the inner through hole" and the "radius of the outer through hole" in Table 1, the numbers in parentheses indicate the number of inner through holes or outer through holes. For example, "0.5(2)" in Example 1 indicates that two through holes with a radius of 0.5 mm are formed relative to the base.

[0040] These test tires were evaluated for workability during adhesion, sensing sensitivity, and the presence or absence of peeling using the following test methods. The results are also shown in Table 1.

[0041] Workability when bonding: For each test tire, the task of fixing the housing containing the functional parts to the tire inner surface with an adhesive was repeated 10 times, the total time required for the task was measured, and the average task time per task was calculated. The evaluation results were expressed as an index using the reciprocal of the calculated value, with Comparative Example 1 being set at 100. A larger index value means better workability during bonding.

[0042] Sensing Sensitivity: Each test tire was mounted on a wheel with a rim size of 15 × 5.5 and mounted on a drum testing machine. A running test was conducted under conditions of an air pressure of 230 kPa, a load of 60% of the maximum load capacity, and a speed of 30 km / h, and the output detected by the sensor element (piezoelectric element) was recorded. Figure 9 shows an example of the output waveform from the piezoelectric element. In this output waveform, when the portion of the tread where the functional component is installed comes into contact with the ground, negative and positive peaks are sequentially formed in the output of the piezoelectric element over time T, resulting in a peak-to-peak value V. The average value of the peak-to-peak values ​​V of the output waveform obtained over each of the 10 measurements was then calculated. The evaluation results were expressed as an index, with Comparative Example 1 being 100, using the average value of the peak-to-peak values ​​V of the output waveform. A higher index value indicates better sensing sensitivity. Sensing sensitivity was evaluated in this manner.

[0043] Peeling: Each test tire was mounted on a wheel with a rim size of 15 x 5.5 and attached to a drum testing machine, and a running test was carried out under the following conditions: air pressure 120 kPa, load 120% of the maximum load capacity, speed 81 km / h, and running distance 10,000 km. After repeating this running test 10 times, the adhesive surface of the container fixed to the inner surface of the tire was visually inspected to check for peeling. The evaluation results showed the presence or absence of peeling.

[0044] [Table 1]

[0045] As can be seen from Table 1, in comparison with Comparative Example 1, the tires of Examples 1 to 5 were able to improve the workability during bonding and also were able to prevent the housing from peeling off.

[0046] On the other hand, in Comparative Example 2, the modulus M of adhesive X 50X Although the sensing sensitivity could be improved by setting the value relatively high, the workability during bonding could not be improved because no through-hole was provided in the base.

[0047] The present disclosure includes the following inventions [1] to [9]. Invention [1] is a functional component-equipped container comprising a functional component having a sensor function for detecting tire information and a container in which the functional component is accommodated, wherein the container has a base with at least one through hole, a container section for accommodating the functional component, and an opening communicating with the container section for inserting and removing the functional component, and the back surface of the base is fixed to the inner surface of the tire with adhesive X. Invention [2] is the functional part-equipped container according to invention [1], characterized in that the through-holes include through-holes arranged on the bottom surface of the container section. The invention [3] is a method for manufacturing a semiconductor device using a semiconductor laser, in which the total area S of the through holes is calculated based on the area S of the back surface of the base. B The functional part-equipped container according to the invention [1] or [2] is characterized in that the ratio of is in the range of 1.0% to 25.0%. The invention [4] is a method for manufacturing a adhesive having a modulus M of 50% elongation of the adhesive X. 50X [MPa] and the modulus M of material A constituting the container at 50% elongation 50A [MPa] and 1.0≦M 50X / M 50A The functional part-equipped container according to any one of inventions [1] to [3] is characterized in that it satisfies the relationship of ≦10.0. The invention [5] has an adhesive filling area made of the adhesive X in the through hole on the bottom surface of the storage part, and a maximum height difference dH between this adhesive filling area and the area on the bottom surface of the storage part excluding the adhesive filling area X The functional part-equipped container according to any one of inventions [1] to [4] is characterized in that the distance between the inner surface of the functional part and the outer surface of the functional part is 2.0 mm or less. Invention [6] is a container with functional components according to any one of inventions [1] to [5], characterized in that the through hole on the bottom surface of the container has an adhesive filling area made of the adhesive X, the functional component has a housing that houses an electronic component and at least one film-like piezoelectric element fixed to the wall surface of the housing, and when the functional component is housed in the container in an unloaded state, at least a part of the adhesive filling area overlaps with a projection area formed by projecting the piezoelectric element onto the outer surface of the housing. Invention [7] is a container with functional parts described in invention [6], characterized in that the overlapping area between the adhesive filling area and the projection area of ​​the piezoelectric element is 10% to 150% of the area of ​​the projection area of ​​the piezoelectric element. Invention [8] is a container with functional parts according to any one of inventions [1] to [7], characterized in that a container for storing the functional parts is fixed to the back surface of the tread portion of the tire, and the functional parts are stored in the container. The invention [9] is a tire characterized in that the functional component-equipped container according to any one of the inventions [1] to [8] is fixed to the inner surface of the tire. [Explanation of symbols]

[0048] 1 Tread section 2 Sidewall 3 Bead section 10 Containment Unit 11 Base 11y back side 12 Side wall 13 Storage section 13x bottom 14 Openings 20 Functional parts 21 Contact surface 22 Sensor element B1,B2 through hole X Adhesive

Claims

1. A functional part-equipped container including a functional part having a sensor function for detecting tire information and a container for accommodating the functional part, The container with functional parts has a base provided with at least one through hole, a container section for accommodating the functional parts, and an opening communicating with the container section for inserting and removing the functional parts, and the back surface of the base is fixed to the inner surface of the tire with adhesive X.

2. The container with functional parts according to claim 1 , wherein the through-holes include a through-hole disposed in the bottom surface of the container portion.

3. The total area S of the through holes relative to the area S of the back surface of the base B 2. The container with functional parts according to claim 1, wherein the ratio of the number of the functional parts is in the range of 1.0% to 25.0%.

4. The modulus M of the adhesive X at 50% elongation 50X [MPa] and the modulus M of the material A constituting the container at 50% elongation 50A [MPa] and 1.0≦M 50X / M 50A 2. The container with functional parts according to claim 1, wherein the relationship of ≦10.0 is satisfied.

5. The through-hole in the bottom surface of the storage section has an adhesive filling area made of the adhesive X, and a maximum height difference dH between this adhesive filling area and the area on the bottom surface of the storage section excluding the adhesive filling area X 2. The container with functional parts according to claim 1, wherein the distance between the outer periphery and the outer periphery is 2.0 mm or less.

6. The through hole in the bottom surface of the accommodation portion has an adhesive filling area made of the adhesive X, The container with functional components as described in claim 1, characterized in that the functional components have a housing that incorporates electronic components and at least one film-shaped piezoelectric element fixed to the wall surface of the housing, and when the functional components are housed in the container in an unloaded state, at least a portion of the adhesive filling area overlaps with a projection area formed by projecting the piezoelectric element onto the outer surface of the housing.

7. 7. The container with functional parts according to claim 6, wherein an overlapping area between the adhesive filling area and the projection area of ​​the piezoelectric element is 10% to 150% of an area of ​​the projection area of ​​the piezoelectric element.

8. 2. The container with functional parts according to claim 1, wherein a container for accommodating the functional parts is fixed to the back surface of the tread portion of the tire, and the functional parts are accommodated in the container.

9. A tire, characterized in that the functional part-equipped container according to any one of claims 1 to 8 is fixed to the inner surface of the tire.

Citation Information

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