JP2018016277A - Functional component fitting pedestal - Google Patents

Functional component fitting pedestal Download PDF

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Publication number
JP2018016277A
JP2018016277A JP2016150517A JP2016150517A JP2018016277A JP 2018016277 A JP2018016277 A JP 2018016277A JP 2016150517 A JP2016150517 A JP 2016150517A JP 2016150517 A JP2016150517 A JP 2016150517A JP 2018016277 A JP2018016277 A JP 2018016277A
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functional component
rubber
tire
side wall
mounting
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長屋　豪
Takeshi Nagaya
豪 長屋
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Bridgestone Corp
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Bridgestone Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0491—Constructional details of means for attaching the control device
    • B60C23/0493—Constructional details of means for attaching the control device for attachment on the tyre

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a functional component fitting pedestal improved in both of durability to high speed and durability at the time of large deformation of a tire.SOLUTION: A functional component fitting pedestal includes: an opening part 11 which is fitted to the inner surface of a tire 30 and into or from which a fitting part 21 of a functional component 20 is inserted or detached; a housing recessed part 12 housing the fitting part 21 of the functional component 20; a bottom part 13 having a projecting part 15 projecting to a side of the opening part 11 and a fitting recessed part 16 formed on a side of the opening part 11 of the projecting part 15, and fixed to the inner surface of the tire 30; and a side wall part 14 connecting the bottom part 13 to the opening part 11. A rubber modulus constituting the bottom part 13 is set so as to be higher than a rubber modulus constituting the side wall part 14.SELECTED DRAWING: Figure 1

Description

本発明は、タイヤの使用状態を検出するセンサモジュール等の機能部品をタイヤに取付けるための機能部品取付台座に関するものである。   The present invention relates to a functional component mounting base for mounting a functional component such as a sensor module for detecting a use state of a tire to a tire.

従来、圧力センサ、温度センサ、加速度センサ等のセンサと、電池又は発電素子と、無線機とを一体化したセンサモジュール等の機能部品をゴム製の台座を介してタイヤの内面に装着して、タイヤ内圧などの走行中のタイヤの状態を検出するとともに、検出されたセンサ情報を車両側に送信する技術が知られている（例えば、特許文献１参照）。
この特許文献１では、台座とセンサモジュールとの嵌合部に突起を設けて、タイヤの踏み込み時及び蹴り出し時に機能部品に加わる慣性力を台座に分散させることで、電池や発電素子などの重量物を搭載しても、台座の高速耐久性能を確保するようにしている。 Conventionally, a functional part such as a sensor module in which a sensor such as a pressure sensor, a temperature sensor, an acceleration sensor, a battery or a power generation element, and a wireless device is integrated is attached to the inner surface of a tire via a rubber base, A technique for detecting the state of a running tire such as tire internal pressure and transmitting detected sensor information to the vehicle side is known (see, for example, Patent Document 1).
In Patent Document 1, a protrusion is provided at a fitting portion between a pedestal and a sensor module, and an inertial force applied to a functional component when the tire is stepped on and kicked out is distributed to the pedestal, thereby reducing the weight of the battery, the power generation element, or the like. Even if an object is mounted, the high-speed durability performance of the pedestal is ensured.

特開２０１５−１６０５１２号公報JP2015-160512A

しかしながら、センサモジュールとの嵌合部に突起を設けるだけでは、高速耐久性能が十分ではなかった。
そこで、台座のゴムのモジュラスを増大させれば、高速耐久性能を向上させることができると考えられるが、ゴムのモジュラスを増大させると、タイヤの変形が大きくなった場合には、台座のゴムの剛性が高まり過ぎるため、台座のゴムが変形に耐えきれず破損する場合があった。 However, the high-speed durability performance is not sufficient only by providing a protrusion at the fitting portion with the sensor module.
Therefore, it is considered that if the modulus of the pedestal rubber is increased, the high-speed durability performance can be improved, but if the modulus of the rubber is increased, if the deformation of the tire increases, Since the rigidity is too high, the rubber on the pedestal sometimes cannot withstand deformation and may be damaged.

本発明は、従来の問題点に鑑みてなされたもので、高速耐久性能とタイヤの大変形時における耐久性能をともに向上させた機能部品取付台座を提供することを目的とする。   The present invention has been made in view of the conventional problems, and an object of the present invention is to provide a functional component mounting base in which both high-speed durability performance and durability performance during large deformation of a tire are improved.

本発明は、タイヤの内面に取付けられる、機能部品の取付部を挿脱するための出入口となる開口部と前記機能部品の取付部を収納する収納凹部とを有するゴム製の機能部品取付台座であって、前記タイヤの内面に固定される底部と、前記底部と前記開口部とを繋ぐ側壁部とを備え、前記底部が、前記開口部側に突出する突起部と、前記突起部の前記開口部側に設けられて、前記取付部の、前記機能部品の取付時に前記底部に対向する面に設けられた挿入用凸部と嵌合する取付用凹部とを有し、前記底部を構成するゴムのモジュラスが、前記側壁部を構成するゴムのモジュラスよりも高いことを特徴とする。
これにより、タイヤ踏み込み時などの大きな慣性力を、モジュラスの高いゴムで構成された底部で支持することができるとともに、タイヤが路面の突起を踏むなどして大変形した場合でも、側壁部がモジュラスが低いゴムから構成されているので、変形に追従することができる。したがって、機能部品取付台座の高速耐久性能とタイヤの大変形時における耐久性能をともに向上させることができる。
なお、モジュラスＭnは、試験片に、１００％以上の伸びを与えたときの応力（引張強さ）の大きさＦn（ＭＰａ）で、一般には、１００％モジュラスが用いられる。
また、前記開口部の径を、前記底部の内壁面と前記側壁部の内壁面とにより形成される収納凹部の最大径よりも小さく形成することで、収納凹部内に挿入された機能部品が機能部品取付台座のゴムの弾性力によって底部側に押圧されるようにしたので、機能部品を収納凹部内に確実に維持することができる。 The present invention is a functional part mounting base made of rubber having an opening serving as an entrance for inserting and removing a mounting part for a functional part and an accommodating recess for storing the mounting part for the functional part, which are attached to the inner surface of the tire. A bottom portion fixed to an inner surface of the tire; and a side wall portion connecting the bottom portion and the opening portion, wherein the bottom portion protrudes toward the opening portion, and the opening of the protrusion portion. A rubber that is provided on a portion side and has a mounting concave portion that fits into an insertion convex portion provided on a surface of the mounting portion that faces the bottom portion when the functional component is mounted, and constitutes the bottom portion The modulus is higher than the modulus of rubber constituting the side wall portion.
As a result, a large inertial force such as when the tire is depressed can be supported by the bottom portion made of rubber having a high modulus, and the side wall portion has a modulus even when the tire is greatly deformed by stepping on a protrusion on the road surface. Since it is made of low rubber, it can follow the deformation. Therefore, it is possible to improve both the high-speed durability performance of the functional component mounting base and the durability performance when the tire is largely deformed.
The modulus Mn is the magnitude of stress (tensile strength) Fn (MPa) when an elongation of 100% or more is given to the specimen, and 100% modulus is generally used.
Further, the functional part inserted into the storage recess functions by forming the diameter of the opening smaller than the maximum diameter of the storage recess formed by the inner wall surface of the bottom and the inner wall surface of the side wall. Since the bottom of the component mounting base is pressed by the elastic force of the rubber, the functional component can be reliably maintained in the storage recess.

本発明の実施の形態示す図である。It is a figure which shows embodiment of this invention. 機能部品の取付部の形状を説明するための図である。It is a figure for demonstrating the shape of the attachment part of a functional component. 機能部品を装着した台座をタイヤの内面に取付けた状態を示す図である。It is a figure which shows the state which attached the base to which the functional component was mounted | worn on the inner surface of a tire. タイヤの変形時における台座に作用する慣性力をを示す模式図である。It is a schematic diagram which shows the inertial force which acts on the base at the time of a deformation | transformation of a tire.

図１（ａ），（ｂ）は、本実施の形態を示す図で、（ａ）図は、本発明による機能部品取付台座（以下、台座１０という）を示す図で、（ｂ）図は、この台座１０に装着される機能部品２０を示す図である。
機能部品２０は、取付部２１と、取付部２１から突出するように形成された把持部２２と、取付部２１の把持部２２とは反対側に設けられた挿入用凸部２３と、センサモジュール２４とを備える。
センサモジュール２４は、タイヤ内の温度、圧力、振動等を計測するためのセンサ２４ａと、電源としての発電素子２４ｂと、センサ２４ａで検出したデータを送信するための無線機２４ｃとを一体化したもので、取付部２１及び把持部２２の少なくとも一方に内蔵される。なお、センサ２４ａは、挿入用凸部２３に内蔵させてもよい。
以下、図１の上方向である把持部２２の突出方向を機能部品２０の上側、挿入用凸部２３の突出方向を下側、同図の左右方向を幅方向という。下側が機能部品２０の取付時におけるタイヤ３０の内面側（ここでは、インナーライナー部３１側）である。
本例では、図２（ａ），（ｂ）に示すように、取付部２１を、矩形２５と、矩形２５の右辺２５ｂを直径とした半円２６とから成る図形２７（角丸長方形の右半分）に矩形状の切欠部２５ｋを設けた図形を、矩形２５の左辺２５ａを回転軸Ｊとして回転して成る回転体の形状とした。回転軸Ｊは、得られた回転体の中心軸となるので、以下、このＪを回転体の中心軸という。
取付部２１は、上下方向の長さである高さが、上記矩形２５の左辺２５ａ（または、右辺２５ｂ）の長さａよりも切欠部２５ｋの深さｄだけ短く、半径が上辺２５ｃ（または、下辺２５ｄ）の長さｂと等しい円柱部２１ａと、この円柱部２１ａの幅方向外側に形成される、中心軸Ｊに平行な面で切ったときの断面形状が、中心軸Ｊから距離ｂだけ離れて位置する、直径が左辺２５ａ（または、右辺２５ｂ）の長さａに等しい半円である円環部２１ｂとを備える。円環部２１ｂの半円は、中心軸Ｊから離れる方向に突出するよう湾曲しており、円環部２１ｂの外径寸法（２ａ＋２ｂ）が、取付部２１の最大径となる。
取付部２１の下面側には、半径が上辺２５ｃ（または、下辺２５ｄ）の長さｂと等しい、高さが切欠部２５ｋの深さｄである円柱状の凹部２１ｋが形成されている。
把持部２２は、幅方向の長さが円柱部２１ａの半径ｂよりも短い板状の部材で、取付部２１の円柱部２１ａの上面側に突設される。なお、把持部２２を、円柱状の部材としてもよい。この場合も、円柱の半径を円柱部２１ａの半径ｂよりも短くすることが好ましい。
挿入用凸部２３は、取付部２１の円柱部２１ａの下面側である円柱状の凹部２１ｋから下方に突出する部材である。
本例では、この挿入用凸部２３を、円柱状の凹部２１ｋの中心を通り、円柱状の凹部２１ｋを、２つの半月状の凹部２１１ｋ，２１２ｋに分割する棒状の部材としたが、切欠部２５ｋの中心から下方に突出する円柱状としてもよい。あるいは、切欠部２５ｋから突出する複数の棒状の部材としてもよい。この場合、複数の棒状の部材は、切欠部２５ｋの中心に対して点対象、もしくは、中心線に対して線対称に設けることが好ましい。 FIGS. 1A and 1B are diagrams showing the present embodiment, FIG. 1A is a diagram showing a functional component mounting base (hereinafter referred to as a base 10) according to the present invention, and FIG. FIG. 2 is a diagram showing a functional component 20 mounted on the base 10.
The functional component 20 includes an attachment part 21, a grip part 22 formed so as to protrude from the attachment part 21, an insertion convex part 23 provided on the opposite side of the grip part 22 of the attachment part 21, and a sensor module. 24.
The sensor module 24 integrates a sensor 24a for measuring temperature, pressure, vibration, and the like in the tire, a power generation element 24b as a power source, and a radio 24c for transmitting data detected by the sensor 24a. It is built in at least one of the attachment portion 21 and the grip portion 22. The sensor 24a may be incorporated in the insertion convex portion 23.
1 is referred to as the upper side of the functional component 20, the protruding direction of the insertion convex portion 23 is referred to as the lower side, and the left-right direction in FIG. The lower side is the inner surface side (here, the inner liner portion 31 side) of the tire 30 when the functional component 20 is attached.
In this example, as shown in FIGS. 2 (a) and 2 (b), the attachment portion 21 is a figure 27 (a right corner of a rounded rectangle) that includes a rectangle 25 and a semicircle 26 having a right side 25b of the rectangle 25 as a diameter. A figure provided with a rectangular cutout portion 25k in a half) is a shape of a rotating body formed by rotating the left side 25a of the rectangle 25 around the rotation axis J. Since the rotation axis J is the central axis of the obtained rotating body, this J is hereinafter referred to as the central axis of the rotating body.
The height of the mounting portion 21 in the vertical direction is shorter than the length a of the left side 25a (or right side 25b) of the rectangle 25 by the depth d of the notch 25k, and the radius is the upper side 25c (or The cross-sectional shape when cut by a plane parallel to the central axis J formed on the outer side in the width direction of the cylindrical portion 21a is equal to the distance b from the central axis J. And an annular portion 21b which is a semicircle having a diameter equal to the length a of the left side 25a (or the right side 25b), which is located only apart. The semicircle of the annular portion 21 b is curved so as to protrude in a direction away from the central axis J, and the outer diameter dimension (2a + 2b) of the annular portion 21 b is the maximum diameter of the attachment portion 21.
A cylindrical recess 21k having a radius equal to the length b of the upper side 25c (or the lower side 25d) and a height that is the depth d of the notch 25k is formed on the lower surface side of the mounting portion 21.
The gripping part 22 is a plate-like member whose length in the width direction is shorter than the radius b of the cylindrical part 21a, and protrudes from the upper surface side of the cylindrical part 21a of the mounting part 21. Note that the grip portion 22 may be a columnar member. Also in this case, it is preferable that the radius of the cylinder is shorter than the radius b of the cylinder portion 21a.
The insertion convex portion 23 is a member that protrudes downward from a cylindrical concave portion 21 k that is the lower surface side of the cylindrical portion 21 a of the attachment portion 21.
In this example, the insertion convex portion 23 is a rod-shaped member that passes through the center of the cylindrical concave portion 21k and divides the cylindrical concave portion 21k into two half-moon-shaped concave portions 211k and 212k. It is good also as a column shape which protrudes below from the center of 25k. Or it is good also as a some rod-shaped member which protrudes from the notch part 25k. In this case, it is preferable that the plurality of rod-shaped members be provided point-symmetrically with respect to the center of the notch 25k or symmetrical with respect to the center line.

台座１０は、図１（ａ）に示すように、機能部品２０の取付部２１を挿脱するための出入口となる開口部１１と、機能部品２０の取付部２１を収納する収納凹部１２とを有するゴム製の部品で、タイヤ３０の内面であるインナーライナー部３１に固定される底部１３と、底部１３と開口部１１とを繋ぐ側壁部１４とを備える。
底部１３は、開口部１１側に突出する突起部１５と、この突起部１５の開口部１１側に設けられた取付用凹部１６とを有する。
側壁部１４は、機能部品２０の取付部２１の、切欠部２５ｋを設ける前の形状である、中心軸Ｊに平行な面で切ったときの断面形状が角丸長方形である回転体のような形状の凹部を有する筒状の部材で、側壁部１４の内壁面と底部１３の内壁面とにより、機能部品２０の取付部２１と同形の収納凹部１２を形成する。すなわち、収納凹部１２は、取付部２１の円柱部２１ａに対応する円柱状空隙部１２ａと、収納凹部１２の取付部２１の円環部２１ｂに対応する、中心軸Ｊから離れる方向に突出するよう湾曲する円環状空隙部１２ｂとを有する。円環状空隙部１２ｂの外径寸法が、収納凹部１２の最大径となる。なお、収納凹部１２の長さ寸法を取付部２１の長さ寸法よりもやや小さめに設定すれば、取付部２１を台座１０のゴムの弾性により保持することができる。
また、側壁部１３の外周面は、下側に行くにしたがって、中心軸Ｊから遠ざけるように形成されている。このように、側壁部１４の肉厚を、下部に行くほど厚く形成すれば、底部１３だけでなく、側壁部１４の下部側もタイヤ３０の内面に固定される。
突起部１５は、機能部品２０の取付部２１の円柱状の凹部２１ｋに嵌合するように形成され、取付用凹部１６は、機能部品２０に設けられた挿入用凸部２３と嵌合するように形成される。具体的には、突起部１４を、円柱状の凹部２１ｋの径よりもやや大きめな径を有する円柱状に形成し、取付用凹部１６を、突起部１４の中心を通る、幅が挿入用凸部２３の幅よりもやや狭い直線状の溝として形成すれば、取付部２１を台座１０のゴムの弾性によ更に確実に保持できる。
突起部１５の取付用凹部１６の左右の部分１５１，１５２が、取付部２１の半月状の凹部２１１ｋ，２１２ｋとそれぞれ嵌合する。
なお、開口部１１の径は、当然のことながら、収納凹部１２の最大径よりも小さく形成される。これにより、収納凹部１２内に挿入された機能部品２０の取付部２１は、台座１０のゴムの弾性力によって底部１３側に押圧されるので、機能部品２０を、確実に嵌合状態に維持することができる。 As shown in FIG. 1A, the pedestal 10 includes an opening 11 serving as an entrance for inserting and removing the mounting portion 21 of the functional component 20, and a storage recess 12 that stores the mounting portion 21 of the functional component 20. The rubber part includes a bottom 13 fixed to the inner liner 31 that is the inner surface of the tire 30, and a side wall 14 that connects the bottom 13 and the opening 11.
The bottom 13 includes a protrusion 15 that protrudes toward the opening 11, and a mounting recess 16 that is provided on the opening 11 side of the protrusion 15.
The side wall part 14 is a shape of the mounting part 21 of the functional component 20 before the notch part 25k is provided, such as a rotating body whose cross-sectional shape when cut by a plane parallel to the central axis J is a rounded rectangle. A cylindrical member having a concave portion of the shape, and the inner wall surface of the side wall portion 14 and the inner wall surface of the bottom portion 13 form an accommodation concave portion 12 having the same shape as the mounting portion 21 of the functional component 20. That is, the storage recess 12 protrudes in a direction away from the central axis J, corresponding to the cylindrical gap portion 12a corresponding to the cylindrical portion 21a of the mounting portion 21 and the annular portion 21b of the mounting portion 21 of the storage recess 12. And a curved annular gap 12b. The outer diameter of the annular gap 12b is the maximum diameter of the storage recess 12. If the length dimension of the storage recess 12 is set slightly smaller than the length dimension of the mounting portion 21, the mounting portion 21 can be held by the elasticity of the rubber of the base 10.
Moreover, the outer peripheral surface of the side wall part 13 is formed so as to be away from the central axis J as it goes downward. As described above, if the thickness of the side wall portion 14 is increased toward the lower portion, not only the bottom portion 13 but also the lower side of the side wall portion 14 is fixed to the inner surface of the tire 30.
The protrusion 15 is formed so as to fit into the cylindrical recess 21k of the mounting portion 21 of the functional component 20, and the mounting recess 16 is fitted with the insertion convex portion 23 provided in the functional component 20. Formed. Specifically, the protrusion 14 is formed in a cylindrical shape having a diameter slightly larger than the diameter of the cylindrical recess 21k, and the mounting recess 16 passes through the center of the protrusion 14, and the width is an insertion protrusion. If it is formed as a linear groove that is slightly narrower than the width of the portion 23, the mounting portion 21 can be more reliably held by the elasticity of the rubber of the base 10.
The left and right portions 151, 152 of the mounting recess 16 of the projection 15 are fitted into the half-moon-shaped recesses 211k, 212k of the mounting portion 21, respectively.
The diameter of the opening 11 is naturally smaller than the maximum diameter of the storage recess 12. As a result, the mounting portion 21 of the functional component 20 inserted into the storage recess 12 is pressed toward the bottom portion 13 by the elastic force of the rubber of the pedestal 10, so that the functional component 20 is reliably maintained in the fitted state. be able to.

本発明の台座１０では、機能部品２０の取付部２１の凹部２１ｋに嵌合するとともに、挿入用凸部２３が嵌合される取付用凹部１６を有する底部１３を構成するゴム（以下、ゴム１という）のモジュラスを、取付部２１の側面である円環部２１ｂを弾性により保持する側壁部１４を構成するゴム（以下、ゴム２という）のモジュラスよりも高く設定することで、台座１０の高速耐久性能とタイヤの大変形時における耐久性能をともに向上させることができるようにしている。
なお、ゴム１の１００％モジュラスとしては、０．９ＭＰａ〜１．３ＭＰａの範囲とすることが好ましく、ゴム２の１００％モジュラスとしては、４ＭＰａ〜１０ＭＰａの範囲とすることが好ましい。
以下、台座１０の作用について説明する。
図３（ａ）に示すように、タイヤ３０は、最下部が接地した状態で転動するので、非接地部は回転運動で、接地部は直線運動となる。このため、非接地部から接地部に移行する際には、境界である踏み込み端Ｅfで、踏み込み端よりも前の部分における向心力Ｆ1と踏み込み端近傍における向心力Ｆ2（Ｆ2＜Ｆ1と）とのアンバランスにより、タイヤ３０の内面に装着された台座１０及び機能部品２０に水平方向の慣性力ＦXが発生する（蹴り出し端の場合には、蹴り出し端よりも後ろの部分の向心力の方が蹴り出し端近傍における向心力よりも大きいので、慣性力の方向は逆になる）。
この慣性力ＦXは、同図の白抜きの小さな矢印で示すｆ1のように、台座１０の底部１３と側壁部１４の底部１３側の３箇所に分散される。
また、慣性力ＦXは、回転速度が高くなるほど大ききなり、数１０ｋｇｆにも及ぶ場合があるが、図４（ａ）に示すような、、底部１３を構成するゴムのモジュラスと側壁部１４を構成するゴムのモジュラスとが、ともに、上記のゴム２と同じ低いモジュラスのゴムである台座１０Ａでは、機能部品２０が重い場合には、台座１０の底部１３が破損し、機能部品２０がタイヤ３０の内面から脱落してしまうおそれがある。
一方、非接地部でのタイヤ内面は曲率を持っているが、接地部では水平になるため、タイヤの転動に伴い回転方向の繰り返し歪が発生する。更に、図３（ｂ）に示すように、タイヤ３０が大きな突起状のもの（図示せず）を通過するような場合には、衝撃力ＦZが作用するため、タイヤ３０の内面は逆Ｒが付くほどの大変形をし、より大きな回転方向歪が発生する。
ところで、図４（ｂ）に示すような、高速耐久性を高めるため、底部１３を構成するゴムのモジュラスと側壁部１４を構成するゴムのモジュラスとを、ともに、上記のゴム１と同じ高いモジュラスのゴムとした台座１０Ｂでは、台座１０の底部１３の破損は防止できるものの、側壁部１４のゴムがタイヤ３０の変形に追従できず、側壁部１４のゴムが破損してしまうするおそれがある。
これに対して、本発明の台座１０は、底部１３を構成するゴム１をモジュラスが高いゴムとし、側壁部１４を構成するゴム２をモジュラスが低いゴムとしたので、慣性力ＦXが大きくなった場合でも、底部１３が破損することはない。また、衝撃力ＦZによりタイヤ３０が大変形した場合でも、側壁部１４の弾性変形、及び、機能部品２０の取付部２１と台座１０との境界面の滑りｆ2により、台座１０の歪を逃がすことができるので、機能部品取付台座の高速耐久性能とタイヤの大変形時における耐久性能をともに向上させることができる。 In the pedestal 10 of the present invention, the rubber (hereinafter referred to as rubber 1) constituting the bottom portion 13 having the mounting recess 16 into which the insertion convex portion 23 is fitted, while being fitted into the recess 21 k of the mounting portion 21 of the functional component 20. Is set higher than the modulus of the rubber (hereinafter referred to as rubber 2) constituting the side wall portion 14 that elastically holds the annular portion 21b that is the side surface of the mounting portion 21, so that the high speed of the base 10 is increased. It is possible to improve both the durability performance and the durability performance when the tire is largely deformed.
The 100% modulus of the rubber 1 is preferably in the range of 0.9 MPa to 1.3 MPa, and the 100% modulus of the rubber 2 is preferably in the range of 4 MPa to 10 MPa.
Hereinafter, the operation of the base 10 will be described.
As shown in FIG. 3A, the tire 30 rolls in a state where the lowermost portion is in contact with the ground, so that the non-ground portion is in a rotational motion and the ground portion is in a linear motion. For this reason, when the transition from the non-ground portion to the ground portion occurs, the union of the centripetal force F1 in the portion before the stepping end and the centripetal force F2 in the vicinity of the stepping end (F2 <F1) at the stepping end Ef that is the boundary. Due to the balance, a horizontal inertia force FX is generated in the pedestal 10 and the functional component 20 mounted on the inner surface of the tire 30 (in the case of the kicking end, the centripetal force of the portion behind the kicking end is kicked). The direction of inertial force is reversed because it is greater than the centripetal force in the vicinity of the protruding end).
The inertial force FX is distributed at three locations on the bottom 13 side of the base 10 and the bottom 13 side of the side wall 14 as indicated by f1 indicated by a small white arrow in the figure.
The inertia force FX increases as the rotational speed increases and may reach several tens of kgf. However, as shown in FIG. 4A, the rubber modulus and the side wall portion 14 constituting the bottom portion 13 are formed. In the pedestal 10 </ b> A in which the modulus of the rubber to be used is the same low modulus rubber as the rubber 2, when the functional component 20 is heavy, the bottom portion 13 of the pedestal 10 is damaged, and the functional component 20 is There is a risk of falling off the inner surface.
On the other hand, the inner surface of the tire at the non-contact portion has a curvature, but becomes horizontal at the contact portion, so that repeated distortion in the rotational direction occurs as the tire rolls. Further, as shown in FIG. 3B, when the tire 30 passes through a large protrusion (not shown), an impact force FZ acts, so that the inner surface of the tire 30 has a reverse R. Large deformation to the extent that it attaches, and greater rotational direction distortion occurs.
Incidentally, as shown in FIG. 4B, in order to improve high-speed durability, both the modulus of rubber constituting the bottom portion 13 and the modulus of rubber constituting the side wall portion 14 are the same as those of the rubber 1 described above. In the pedestal 10B made of rubber, the bottom 13 of the pedestal 10 can be prevented from being damaged, but the rubber on the side wall 14 cannot follow the deformation of the tire 30 and the rubber on the side wall 14 may be damaged.
On the other hand, in the base 10 of the present invention, since the rubber 1 constituting the bottom portion 13 is made of rubber having a high modulus and the rubber 2 constituting the side wall portion 14 is made of rubber having a low modulus, the inertial force FX is increased. Even in this case, the bottom 13 is not damaged. Even when the tire 30 is largely deformed by the impact force FZ, the distortion of the base 10 is released by the elastic deformation of the side wall portion 14 and the slip f2 of the boundary surface between the mounting portion 21 of the functional component 20 and the base 10. Therefore, it is possible to improve both the high-speed durability performance of the functional component mounting base and the durability performance when the tire is largely deformed.

［実施例］
機能部品を取付けた機能部品取付台座を、タイヤ内面に接着材で固定した後、タイヤを以下の条件で試験し、機能部品取付台座の破損の有無を調べた結果を以下の表１に示す。
実施例は、図１（ａ）に示した、側壁部のゴムであるゴム１の１００％モジュラスが１Ｍｐａ、底部のゴムであるゴム２の１００％モジュラスが７Ｍｐａである本発明による台座、従来例１は、側壁部も底部も、１００％モジュラスが１Ｍｐａであるゴム１を用いた台座、従来例２は、側壁部も底部も、１００％モジュラスが７Ｍｐａであるゴム２を用いた台座である。
（１）タイヤサイズ、２２５/５０Ｒ１７
（２）高速耐久試験
荷重６２０ｋｇｆ、空気圧２６０ｋＰａ、最大速度１７０ｋｍ/ｈまで走行。
（３）突起乗越試験
荷重７００ｋｇｆ、空気圧１８０ｋＰａ、最大速度５０ｋｍ/ｈで、３５ｍｍの高
さの突起を３６０回通過するまで実施。

Figure 2018016277
表１から明らかなように、側壁部も底部も同種のゴムを用いた台座では、ゴムのモジュラスを低くすると、タイヤの大変形時における耐久性能は確保できるものの、高速耐久性能が劣化し、ゴムのモジュラスを高くすると、高速耐久性能は確保できるものの、タイヤの大変形時における耐久性能が劣ることがわかる。
また、本発明のように、側壁部のゴムに低モジュラスのゴムを用い、底部のゴムに高モジュラスのゴムを用いれば、高速耐久性能とタイヤの大変形時における耐久性能をともに確保できることが確認された。 [Example]
Table 1 below shows the results of examining the presence or absence of damage to the functional component mounting base after the functional component mounting base to which the functional component is mounted is fixed to the inner surface of the tire with an adhesive and the tire is tested under the following conditions.
The embodiment shown in FIG. 1 (a) is a pedestal according to the present invention in which the rubber 1 which is the rubber of the side wall has a 100% modulus of 1 Mpa and the rubber 2 which is the rubber of the bottom has a 100% modulus of 7 Mpa. Reference numeral 1 denotes a pedestal using rubber 1 having a 100% modulus of 1 Mpa for both the side wall and the bottom, and Conventional Example 2 is a pedestal using rubber 2 having a 100% modulus of 7 Mpa for both the side wall and the bottom.
(1) Tire size, 225 / 50R17
(2) High-speed endurance test Traveling to a load of 620 kgf, an air pressure of 260 kPa, and a maximum speed of 170 km / h.
(3) Protrusion overpass test Conducted at a load of 700 kgf, air pressure of 180 kPa, maximum speed of 50 km / h until a protrusion with a height of 35 mm passed 360 times.
Figure 2018016277
 As is clear from Table 1, in the pedestal using the same type of rubber for both the side wall and the bottom, if the modulus of the rubber is lowered, the durability at the time of large deformation of the tire can be secured, but the high-speed durability is deteriorated, and the rubber It can be seen that when the modulus of the tire is increased, high-speed durability performance can be secured, but durability performance at the time of large deformation of the tire is inferior.
In addition, if low modulus rubber is used for the side wall rubber and high modulus rubber is used for the bottom rubber as in the present invention, it is confirmed that both high speed durability performance and durability performance during large deformation of the tire can be secured. It was done.

以上、本発明を実施の形態及び実施例を用いて説明したが、本発明の技術的範囲は前記実施の形態に記載の範囲には限定されない。前記実施の形態に、多様な変更または改良を加えることが可能であることが当業者にも明らかである。そのような変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲からかである。   As mentioned above, although this invention was demonstrated using embodiment and an Example, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the embodiment. It is from the scope of the claims that the embodiments added with such changes or improvements can also be included in the technical scope of the present invention.

例えば、前記実施の形態では、機能部品２０の取付部２１を、角丸長方形の短軸を回転軸（中心軸Ｊ）として得られる回転体としたが、を中心軸Ｊに沿った方向の両方の端部（底部、頂部）の径寸法よりも大きい径寸法に形成された側面を有した回転体、又は、柱体、又は、盤体等のような形状、例えば、楕円の短軸を回転軸（中心軸）として得られる回転楕円体、又は、円柱体、又は円盤体のような形状であってもよい。   For example, in the above-described embodiment, the attachment portion 21 of the functional component 20 is a rotating body obtained by using the short axis of the rounded rectangle as the rotation axis (center axis J). Rotating a shape such as a rotating body with a diameter larger than the diameter of the end (bottom, top), or a column, or a board, such as an elliptical short axis The shape may be a spheroid obtained as an axis (center axis), a cylindrical body, or a disk.

１０ 機能部品取付台座、１１ 開口部、１２ 収納凹部、
１３ 底部、１４ 側壁部、１５ 突起部、１６ 取付用凹部、
２０ 機能部品、２１ 取付部、２１ａ 円柱部、２１ｂ 円環部、
２１ｋ 円柱状の凹部、２２ 把持部、２３ 挿入用凸部、２４ センサモジュール、
２４ａ センサ、２４ｂ 発電素子、２４ｃ 無線機、
３０ タイヤ、３１ インナーライナー部。

10 functional component mounting base, 11 opening, 12 storage recess,
13 bottom part, 14 side wall part, 15 protrusion part, 16 recessed part for attachment,
20 functional parts, 21 mounting part, 21a cylindrical part, 21b annular part,
21k cylindrical concave part, 22 gripping part, 23 convex part for insertion, 24 sensor module,
24a sensor, 24b power generation element, 24c wireless device,
30 tires, 31 inner liner part.

Claims (2)

タイヤの内面に取付けられる、機能部品の取付部を挿脱するための出入口となる開口部と前記機能部品の取付部を収納する収納凹部とを有するゴム製の機能部品取付台座であって、
前記タイヤの内面に固定される底部と、
前記底部と前記開口部とを繋ぐ側壁部とを備え、
前記底部が、
前記開口部側に突出する突起部と、
前記突起部の前記開口部側に設けられて、前記取付部の、前記機能部品の取付時に前記底部に対向する面に設けられた挿入用凸部と嵌合する取付用凹部とを有し、
前記底部を構成するゴムのモジュラスが、前記側壁部を構成するゴムのモジュラスよりも高いことを特徴とする機能部品取付台座。 A functional component mounting base made of rubber having an opening serving as an entrance and exit for inserting and removing the mounting portion of the functional component attached to the inner surface of the tire, and a storage recess for storing the mounting portion of the functional component,
A bottom fixed to the inner surface of the tire;
A side wall connecting the bottom and the opening;
The bottom is
A protrusion projecting toward the opening,
A mounting recess provided on the opening side of the protrusion, and fitted with an insertion protrusion provided on a surface of the mounting portion facing the bottom when the functional component is mounted;
A functional component mounting base, wherein a modulus of rubber constituting the bottom portion is higher than a modulus of rubber constituting the side wall portion. 前記開口部の径が、前記底部の内壁面と前記側壁部の内壁面とにより形成される収納凹部の最大径よりも小さく形成されていることを特徴とする請求項１に記載の機能部品取付台座。

The functional component mounting according to claim 1, wherein a diameter of the opening is smaller than a maximum diameter of a storage recess formed by an inner wall surface of the bottom portion and an inner wall surface of the side wall portion. pedestal.

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WO2023181554A1 (en) * 2022-03-23 2023-09-28 横浜ゴム株式会社 Storage body with functional component and tire
WO2023181553A1 (en) * 2022-03-23 2023-09-28 横浜ゴム株式会社 Accommodation body with functional component and tire
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Publication number Priority date Publication date Assignee Title
WO2021186838A1 (en) * 2020-03-19 2021-09-23 株式会社ブリヂストン Functional component, structure for attaching functional component, and tire
JP2021146875A (en) * 2020-03-19 2021-09-27 株式会社ブリヂストン Functional component, attachment structure of the same, and tire
CN115298043A (en) * 2020-03-19 2022-11-04 株式会社普利司通 Functional component, mounting structure for functional component, and tire
JP7381376B2 (en) 2020-03-19 2023-11-15 株式会社ブリヂストン Functional parts, functional parts mounting structure, and tires
CN115298043B (en) * 2020-03-19 2024-01-12 株式会社普利司通 Tire functional component, mounting structure for mounting tire functional component to tire, and tire
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