JP2017159794A - Functional component device and tire comprising the functional component device - Google Patents

Functional component device and tire comprising the functional component device Download PDF

Info

Publication number
JP2017159794A
JP2017159794A JP2016045978A JP2016045978A JP2017159794A JP 2017159794 A JP2017159794 A JP 2017159794A JP 2016045978 A JP2016045978 A JP 2016045978A JP 2016045978 A JP2016045978 A JP 2016045978A JP 2017159794 A JP2017159794 A JP 2017159794A
Authority
JP
Japan
Prior art keywords
functional component
mounting member
tire
component mounting
convex portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2016045978A
Other languages
Japanese (ja)
Inventor
長屋　豪
Takeshi Nagaya
豪 長屋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP2016045978A priority Critical patent/JP2017159794A/en
Publication of JP2017159794A publication Critical patent/JP2017159794A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Tires In General (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a functional component device and the like which can accurately measure vibrations which occur in an inner surface of a tire.SOLUTION: A functional component device 50 is equipped with a functional component 29, and a functional component mounting member made of rubber (a functional component mounting-part pedestal 1) which has a recessed part 2A for mounting a functional component-side mounted part 30 of the functional component in a fitted state and a bottom surface 4 to be attached to an inner surface 70 of a tire 60 to oppose to an inner bottom part of the recessed part, which further comprises: a mounted part-side protruding part (a partition protruding part 33) provided at the bottom part of the functional component-side mounted part; a functional component mounting member-side recessed part (a partition recessed part 8) which is provided at the inner bottom part of the recessed part and is fitted to the mounted part-side protruding part; and vibration detection means (an acceleration sensor 51) buried in the mounted part-side protruding part.SELECTED DRAWING: Figure 2

Description

本発明は、機能部品と、機能部品をタイヤに取付けるための機能部品取付部材とを備えて構成された機能部品装置等に関する。   The present invention relates to a functional component device and the like configured to include a functional component and a functional component mounting member for mounting the functional component to a tire.

例えば、センサ（圧力センサ、温度センサ、加速度センサ等）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機能部品取付部材としての機能部品取付台座を介してタイヤの内面に装着することにより、タイヤの状態を検出する技術において、当該機能部品取付台座として、機能部品に設けられた機能部品側被取付部が嵌合状態に取付けられる凹部を有した取付部を備えた構成、即ち、機能部品と、機能部品をタイヤに取付けるための機能部品取付台座とを備えて構成された機能部品装置が知られている（特許文献１参照）。
例えば、図８に示すように、振動検出手段としての加速度センサ５１を搭載した機能部品２９０を機能部品取付台座１００を介してタイヤ６０の内面７０に取付け、車両走行時においてタイヤ６０の内面７０に発生する振動を計測、解析して、タイヤと路面間の摩擦状態等を推定するようにしている。尚、図中、Ｒはタイヤの回転（転動）方向を示す。 For example, a functional component such as a sensor module in which a sensor (a pressure sensor, a temperature sensor, an acceleration sensor, etc.), a battery or a power generation element, and a wireless device are integrated is connected via a functional component mounting base as a rubber functional component mounting member. In the technology for detecting the state of the tire by attaching it to the inner surface of the tire, as the functional component mounting base, a mounting portion having a recess in which a functional component side mounting portion provided in the functional component is mounted in a fitted state There is known a functional component device that includes a functional component, that is, a functional component and a functional component mounting base for mounting the functional component on a tire (see Patent Document 1).
For example, as shown in FIG. 8, a functional component 290 on which an acceleration sensor 51 as vibration detecting means is mounted is attached to the inner surface 70 of the tire 60 via the functional component mounting base 100, and is attached to the inner surface 70 of the tire 60 during vehicle travel. The generated vibration is measured and analyzed to estimate the friction state between the tire and the road surface. In the figure, R indicates the direction of rotation (rolling) of the tire.

国際公開第２００８／１４３３２６号International Publication No. 2008/143326

タイヤの内面に発生する振動を正しく計測するためには、タイヤの内面に発生する振動が加速度センサに余すことなく正確に伝達される必要があるが、特許文献１に示す構成のように、機能部品と機能部品取付台座との間に隙間ができてしまう場合、タイヤの内面に発生する微小な振動が上記隙間部分で吸収されてしまって、振動を正確に計測できない。また、図８に示すように、機能部品２９０に設けられた機能部品側被取付部３００の底部と機能品取付台座１００の凹部２Ａの内底部とが平滑な形状である場合、当該機能部品側被取付部３００の底部と機能部品取付台座１００の凹部２Ａの内底部とが接触する接触面１０１での摩擦損失により、タイヤ６０からの振動が加速度センサ５１まで正確に伝達されないため、振動を正確に計測できない。
本発明は、タイヤの内面に発生する振動を正確に計測できる機能部品装置等を提供するものである。 In order to correctly measure the vibration generated on the inner surface of the tire, it is necessary to accurately transmit the vibration generated on the inner surface of the tire without leaving the acceleration sensor. When a gap is formed between the component and the functional component mounting base, minute vibration generated on the inner surface of the tire is absorbed by the gap portion, and the vibration cannot be measured accurately. In addition, as shown in FIG. 8, when the bottom part of the functional part side attached portion 300 provided in the functional part 290 and the inner bottom part of the concave part 2 </ b> A of the functional part mounting base 100 have a smooth shape, The vibration from the tire 60 is not accurately transmitted to the acceleration sensor 51 due to the friction loss at the contact surface 101 where the bottom of the mounted portion 300 and the inner bottom of the recess 2A of the functional component mounting base 100 come into contact. Cannot be measured.
The present invention provides a functional component device and the like that can accurately measure vibration generated on the inner surface of a tire.

本発明に係る機能部品装置は、機能部品と、前記機能部品の機能部品側被取付部を嵌合状態に取付けるための凹部と当該凹部の内底部と対向してタイヤの内面に取付けられる底面とを有したゴム製の機能部品取付部材と、を備えた機能部品装置であって、前記機能部品側被取付部の底部に設けられた被取付部側凸部と、前記凹部の内底部に設けられて前記被取付部側凸部と嵌合する機能部品取付部材側凹部と、前記被取付部側凸部内に埋設された振動検出手段と、を備えたので、振動検出手段をタイヤの内面に近付けることができるとともに、振動検出手段を埋設した被取付部側凸部が拘束され、機能部品取付部材側凹部の壁面と当該機能部品取付部材側凹部に嵌合する被取付部側凸部の壁面とが隙間無く密着した状態とできるため、被取付部側凸部内に埋設された振動検出手段がタイヤの内面に発生する振動を正確に計測できる機能部品装置を得ることができる。

また、前記機能部品取付部材側凹部は、底面の幅寸法が開口の幅寸法よりも小さく形成されることによって壁面が傾斜面に形成され、前記機能部品取付部材側凹部に嵌合される前記被取付部側凸部は、幅寸法が、前記機能部品取付部材側凹部の幅寸法よりも大きく形成され、前記機能部品取付部材側凹部と前記被取付部側凸部とがしばりばめ状態に嵌合されたので、振動検出手段をタイヤの内面に近付けることができるとともに、振動検出手段を埋設した被取付部側凸部が締め付けられて拘束され、機能部品取付部材側凹部の壁面と当該機能部品取付部材側凹部に嵌合する被取付部側凸部の壁面とが隙間無く密着した状態とできるため、被取付部側凸部内に埋設された振動検出手段がタイヤの内面に発生する振動を正確に計測できる機能部品装置を得ることができる。
また、前記被取付部側凸部と嵌合する前記機能部品取付部材側凹部は、底面の幅寸法と開口の幅寸法とが同じ寸法に形成されて底面と開口とを繋ぐ壁面が平面に形成され、前記被取付部側凸部を挟む前記機能部品取付部材側凹部の両側に位置される各機能部品取付部材側凸部は、前記被取付部側凸部の壁面と嵌合する壁面以外の前記機能部品取付部材の前記底面側から前記凹部の開口側に向けて延長する壁面が、前記凹部の中心軸に近づくよう傾斜する傾斜面に形成され、前記機能部品取付部材側凹部の両側に位置される一方の機能部品取付部材側凸部の傾斜面と他方の機能部品取付部材側凸部の傾斜面との間の幅寸法が、前記一方の機能部品取付部材側凸部の傾斜面と対応する一方の被取付部側凹部の壁面である傾斜面と前記他方の機能部品取付部材側凸部の傾斜面と対応する他方の被取付部側凹部の壁面である傾斜面との間の幅寸法よりも大きい寸法となるように構成され、前記一方の被取付部側凹部と前記一方の機能部品取付部材側凸部、及び、前記他方の被取付部側凹部と前記他方の機能部品取付部材側凸部とがしばりばめ状態に嵌合されたので、振動検出手段をタイヤの内面に近付けることができるとともに、振動検出手段を埋設した被取付部側凸部が締め付けられて拘束され、機能部品取付部材側凹部の壁面と当該機能部品取付部材側凹部に嵌合する被取付部側凸部の壁面とが隙間無く密着した状態とできるため、被取付部側凸部内に埋設された振動検出手段がタイヤの内面に発生する振動を正確に計測できる機能部品装置を得ることができる。
本発明に係るタイヤは、前記機能部品装置がタイヤの内面に取付けられたタイヤであって、前記振動検出手段が埋設された前記被取付部側凸部と嵌合する前記機能部品取付部材側凹部の壁面がタイヤの周方向と交差するように、前記機能部品装置がタイヤの内面に取付けられた構成であるので、タイヤの内面に発生する振動を正確に計測できるタイヤを得ることができる。 The functional component device according to the present invention includes a functional component, a concave portion for mounting the functional component-side mounted portion of the functional component in a fitted state, and a bottom surface that is attached to the inner surface of the tire so as to face the inner bottom portion of the concave portion. A functional part mounting member made of rubber having a mounting part-side convex part provided at a bottom part of the functional part-side mounting part and an inner bottom part of the concave part. Since the functional component mounting member side concave portion fitted to the mounted portion side convex portion and the vibration detecting means embedded in the mounted portion side convex portion are provided, the vibration detecting means is provided on the inner surface of the tire. The mounted portion side convex portion in which the vibration detecting means is embedded is constrained, and the wall surface of the functional component mounting member side concave portion and the wall surface of the mounted portion side convex portion that fits into the functional component mounting member side concave portion Can be in close contact with no gap, It can vibration detecting means embedded in the side protrusions obtain functional component device capable of accurately measuring the vibration generated on the inner surface of the tire.

Further, the concave part on the functional component mounting member side is formed such that the bottom surface has a width dimension smaller than the width dimension of the opening so that the wall surface is formed into an inclined surface and is fitted into the functional component mounting member side concave part. The mounting part side convex part is formed so that the width dimension is larger than the width dimension of the functional part mounting member side concave part, and the functional part mounting member side concave part and the mounted part side convex part fit in a tight fit state. As a result, the vibration detecting means can be brought close to the inner surface of the tire, and the attached portion side convex portion in which the vibration detecting means is embedded is tightened and restrained, and the wall surface of the functional component attaching member side concave portion and the functional component Since it can be in a state where there is no gap between the wall surface of the mounting portion side convex portion that fits into the mounting member side concave portion, the vibration detecting means embedded in the mounting portion side convex portion accurately detects the vibration generated on the inner surface of the tire. Functional parts that can be measured It is possible to obtain the location.
In addition, the concave part on the functional component mounting member side that fits the convex part on the mounted part side is formed with the same width dimension of the bottom surface and the width dimension of the opening, and a flat wall surface connecting the bottom surface and the opening is formed. Each functional component mounting member side convex portion positioned on both sides of the functional component mounting member side concave portion sandwiching the mounted portion side convex portion is other than the wall surface that fits with the wall surface of the mounted portion side convex portion. Wall surfaces extending from the bottom surface side of the functional component mounting member toward the opening side of the concave portion are formed as inclined surfaces that are inclined so as to approach the central axis of the concave portion, and are positioned on both sides of the concave portion on the functional component mounting member side. The width dimension between the inclined surface of the convex part on the one functional component mounting member side and the inclined surface of the convex part on the other functional component mounting member side corresponds to the inclined surface of the convex part on the one functional component mounting member side. The inclined surface which is the wall surface of the recessed portion on one side to be attached and the other functional portion The mounting member side convex portion is configured to have a dimension larger than a width dimension between the corresponding inclined surface which is the wall surface of the other mounted portion side concave portion and the one mounted portion side concave portion, Since the one functional component mounting member side convex portion and the other mounted portion side concave portion and the other functional component mounting member side convex portion are fitted in a tight fit state, the vibration detecting means is used as a tire. The mounting portion side convex portion in which the vibration detecting means is embedded is tightened and restrained, and the mounting portion is fitted to the functional component mounting member side concave portion and the functional component mounting member side concave portion. It is possible to obtain a functional component device capable of accurately measuring the vibration generated on the inner surface of the tire by the vibration detecting means embedded in the mounting portion side convex portion because the wall surface of the convex portion on the side portion can be in close contact with the wall surface. it can.
The tire according to the present invention is a tire in which the functional component device is mounted on an inner surface of the tire, and the functional component mounting member-side concave portion that fits into the mounted portion-side convex portion in which the vibration detecting means is embedded. Since the functional component device is attached to the inner surface of the tire so that the wall surface of the tire intersects with the circumferential direction of the tire, a tire capable of accurately measuring vibration generated on the inner surface of the tire can be obtained.

機能部品取付台座を介してタイヤの内面に機能部品装置（機能部品＋機能部品取付台座）が取付けられた状態を示すタイヤの断面図（実施形態１）。Sectional drawing of the tire which shows the state by which the functional component apparatus (functional component + functional component mounting base) was attached to the inner surface of the tire via the functional component mounting base (Embodiment 1). タイヤの内面に取付けられた機能部品装置（機能部品＋機能部品取付台座）を示す断面図（実施形態１）。Sectional drawing which shows the functional component apparatus (functional component + functional component mounting base) attached to the inner surface of the tire (Embodiment 1). 機能部品を示す断面図（実施形態１）。Sectional drawing which shows a functional component (Embodiment 1). 機能部品取付台座を示す断面図（実施形態１）。Sectional drawing which shows a functional component mounting base (Embodiment 1). 機能部品側被取付部を底面側から見た斜視図（実施形態１）。The perspective view which looked at the functional component side to-be-attached part from the bottom face side (embodiment 1). 機能部品取付台座を示す斜視図（一部断面）（実施形態１）。The perspective view (partial cross section) which shows a functional component mounting base (Embodiment 1). タイヤの内面に取付けられた機能部品装置（機能部品＋機能部品取付台座）を示す断面図（実施形態２）。Sectional drawing which shows the functional component apparatus (functional component + functional component mounting base) attached to the inner surface of the tire (Embodiment 2). タイヤの内面に取付けられた機能部品装置（機能部品＋機能部品取付台座）を示す断面図（従来例）。Sectional drawing which shows the functional component apparatus (functional component + functional component mounting base) attached to the inner surface of a tire (conventional example).

以下、発明の実施形態を通じて本発明を詳説するが、以下の実施形態は特許請求の範囲に係る発明を限定するものではなく、また実施形態の中で説明される特徴の組み合わせのすべてが発明の解決手段に必須であるとは限らず、選択的に採用される構成を含むものである。   Hereinafter, the present invention will be described in detail through embodiments of the invention. However, the following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are included in the invention. It is not necessarily essential to the solution, but includes a configuration that is selectively adopted.

実施形態１
図１，図２に示すように、実施形態１に係る機能部品装置５０は、機能部品２９と、機能部品２９の機能部品側被取付部３０を嵌合状態に取付けるための凹部２Ａを有した取付部２と当該凹部２Ａの内底部と対向してタイヤ６０の内面７０に取付けられる底面４とを有したゴム製の機能部品取付部材としての機能部品取付台座１と、を備えた構成である。 Embodiment 1
As shown in FIGS. 1 and 2, the functional component device 50 according to the first embodiment has a functional component 29 and a recess 2 </ b> A for mounting the functional component-side mounted portion 30 of the functional component 29 in a fitted state. A functional component mounting base 1 as a functional component mounting member made of rubber having a mounting portion 2 and a bottom surface 4 mounted on the inner surface 70 of the tire 60 so as to face the inner bottom portion of the recess 2A. .

機能部品２９は、例えば、タイヤ６０の状態を検出するために、図外の検出手段を搭載した構成であり、具体的には、取付基板に取付けられた図外の検出手段としてのセンサ（圧力センサ、温度センサ、加速度センサ等）、電池又は発電素子、無線機等の部品の周囲を樹脂で固めて一体化したセンサモジュールである。
機能部品２９は、例えば樹脂により形成された機能部品側被取付部３０及び機能部品側被取付部３０より突出するように形成された突出部３７を備え、機能部品側被取付部３０及び突出部３７の少なくとも一方に上述したセンサ等の部品が内蔵されたことによって、例えば、タイヤ６０内の温度、圧力、振動等を計測するための機能を備えた構成である。 For example, the functional component 29 has a configuration in which detection means (not shown) is mounted in order to detect the state of the tire 60, and specifically, a sensor (pressure) as detection means (not shown) attached to the mounting board. Sensor, temperature sensor, acceleration sensor, etc.), battery, power generation element, wireless device, etc.
The functional component 29 includes, for example, a functional component-side attached portion 30 made of resin and a protruding portion 37 formed so as to protrude from the functional component-side attached portion 30, and the functional component-side attached portion 30 and the protruding portion. Since the above-described components such as the sensor are incorporated in at least one of 37, for example, the temperature, pressure, vibration, and the like in the tire 60 are measured.

図１に示すように、タイヤ６０は、カーカス６０Ａと、ベルト６１と、トレッド部６２と、ビード部６３と、サイドウォール部６４と、ショルダー部６５と、を備えて構成される。カーカス６０Ａは、タイヤ６０の内面７０側からタイヤ６０の外面７１側に向けて積層された複数のコード層が一対のビード部６３，６３間をトロイド状に跨るように配設され、例えば、内層側の複数層は両端が該ビード部６３のビードコア６６に対してタイヤ幅方向内側から外側へ折り返されるターンアッププライとなっており、外層側の複数層は両端が該ビード部６３のビードコア６６に対してタイヤ幅方向外側から内側へ折り返されるダウンプライとなっている。ベルト６１は、カーカス６０Ａとトレッド部６２との間に設けられる。トレッド部６２は、カーカス６０Ａ及びベルト６１のタイヤ径方向外側に配置されている。トレッド部６２の表面には、タイヤ周方向に延びる複数の周方向主溝６７が形成されている。   As shown in FIG. 1, the tire 60 includes a carcass 60 </ b> A, a belt 61, a tread portion 62, a bead portion 63, a sidewall portion 64, and a shoulder portion 65. The carcass 60A is disposed such that a plurality of cord layers laminated from the inner surface 70 side of the tire 60 toward the outer surface 71 side of the tire 60 straddle between the pair of bead portions 63, 63 in a toroidal shape. The multiple layers on the side are turn-up plies whose ends are folded back from the inner side in the tire width direction to the bead core 66 of the bead portion 63, and the multiple layers on the outer layer side are the bead cores 66 of the bead portion 63 at both ends. On the other hand, it is a down ply that is folded back from the outside in the tire width direction. The belt 61 is provided between the carcass 60 </ b> A and the tread portion 62. The tread portion 62 is disposed outside the carcass 60 </ b> A and the belt 61 in the tire radial direction. A plurality of circumferential main grooves 67 extending in the tire circumferential direction are formed on the surface of the tread portion 62.

次に、図２，図３，図５を参照し、機能部品２９に設けられた機能部品側被取付部３０について説明する。
機能部品側被取付部３０は、機能部品取付台座１の取付部２の凹部２Ａに嵌合される形状、例えば、角丸長方形（Rounded Rectangle）の短軸を回転軸（機能部品側被取付部３０の中心軸３０Ｘ）として得られる回転体のような形状に形成される。
機能部品側被取付部３０は、取付部２の凹部２Ａに嵌合された場合に当該凹部２Ａの内底面と接触する底部と、当該底部と対向する頂部と、当該底部と頂部とを繋ぐ側面（外周面）とを備える。
機能部品側被取付部３０の側面は、機能部品側被取付部３０の中心軸３０Ｘに沿って当該中心軸３０Ｘから離れる方向に突出するよう湾曲する円弧面３１に形成される。換言すれば、機能部品側被取付部３０の側面は、機能部品側被取付部３０の中心軸３０Ｘに沿った断面形状が、当該中心軸３０Ｘから離れる方向に突出するよう湾曲する円弧面３１である。
機能部品側被取付部３０の底部は、機能部品側被取付部３０の中心軸３０Ｘを中心とする円環面３２と、当該円環面３２の内側に設けられた中心軸３０Ｘを中心とする円形凹部の底面より当該円形凹部を２分割するように設けられた被取付部側凸部としての仕切凸部３３と、当該仕切凸部３３により２分割された被取付部側凹部としての２つの半円形凹部３４，３５とを備えて構成される（図５参照）。そして、前記被取付部側凸部としての仕切凸部３３内には振動検出手段としての加速度センサ５１が埋設されている。
機能部品側被取付部３０の頂部は、取付部２の凹部２Ａの開口３の開口縁３ａで覆われる中心軸３０Ｘを中心とする円環状の平坦面３６を有する。そして、当該平坦面３６から底部とは反対方向に延長する突出部３７が設けられる。当該突出部３７は、上述したセンサ等の部品が内蔵される部分、機能部品側被取付部３０を取付部２の凹部２Ａに取付ける際の把手部分等として使用される。
即ち、機能部品側被取付部３０は、図３に示すように、中心軸３０Ｘに沿った方向の中央部（側面（円弧面３１）の中央部）の径寸法（中心軸３０Ｘを中心とした中心軸３０Ｘと直交する方向の長さである機能部品側被取付部３０の外径寸法）が、中心軸３０Ｘに沿った方向の両方の端部（底部、及び、頂部）の径寸法よりも大きい寸法である最大径３０Ａに形成される。 Next, the functional component side attached portion 30 provided in the functional component 29 will be described with reference to FIGS.
The functional component side mounted portion 30 is shaped to be fitted into the recess 2A of the mounting portion 2 of the functional component mounting base 1, for example, a short axis of a rounded rectangle (Rounded Rectangle) with a rotation axis (functional component side mounted portion) It is formed in a shape like a rotating body obtained as 30 central axes 30X).
The functional component side attached portion 30 is a side surface connecting the bottom portion that contacts the inner bottom surface of the concave portion 2A, the top portion facing the bottom portion, and the bottom portion and the top portion when fitted to the concave portion 2A of the attaching portion 2. (Outer peripheral surface).
The side surface of the functional component side attached portion 30 is formed into an arcuate surface 31 that curves so as to protrude in a direction away from the central axis 30X along the central axis 30X of the functional component side attached portion 30. In other words, the side surface of the functional component side attached portion 30 is an arcuate surface 31 that is curved so that the cross-sectional shape along the central axis 30X of the functional component side attached portion 30 protrudes in a direction away from the central axis 30X. is there.
The bottom of the functional component side attached portion 30 is centered on an annular surface 32 centered on the central axis 30X of the functional component side attached portion 30 and a central axis 30X provided inside the annular surface 32. A partition convex portion 33 as a mounted portion side convex portion provided so as to divide the circular concave portion into two from the bottom surface of the circular concave portion, and two mounted portion side concave portions divided into two by the partition convex portion 33 It comprises semicircular recesses 34 and 35 (see FIG. 5). And the acceleration sensor 51 as a vibration detection means is embed | buried in the partition convex part 33 as the said to-be-attached part side convex part.
The top part of the functional component side attached part 30 has an annular flat surface 36 centering on the central axis 30 </ b> X covered with the opening edge 3 a of the opening 3 of the recess 2 </ b> A of the attaching part 2. And the protrusion part 37 extended in the direction opposite to a bottom part from the said flat surface 36 is provided. The projecting portion 37 is used as a portion in which components such as the sensor described above are incorporated, a handle portion when the functional component side attached portion 30 is attached to the recessed portion 2A of the attaching portion 2, and the like.
That is, as shown in FIG. 3, the functional component side mounted portion 30 has a diameter dimension (centering on the central axis 30 </ b> X) of the central portion (the central portion of the side surface (arc surface 31)) along the central axis 30 </ b> X. The outer diameter dimension of the functional component side mounted portion 30, which is the length in the direction orthogonal to the central axis 30 </ b> X), is larger than the radial dimension of both ends (bottom and top) in the direction along the central axis 30 </ b> X. It is formed with a maximum diameter of 30A, which is a large dimension.

次に、図２，図４，図６を参照し、機能部品取付台座１について説明する。
機能部品取付台座１の取付部２は、機能部品側被取付部３０の形状と対応した凹部２Ａを有し、当該凹部２Ａに挿入された機能部品側被取付部３０が機能部品取付台座１のゴム弾性によって当該凹部２Ａに嵌合された状態となるように構成されている。
機能部品側被取付部３０が嵌合される凹部２Ａは、機能部品側被取付部３０を凹部２Ａに対して挿脱するための出入口となる円形の開口３と、開口３と対向する内底部と、開口３と内底部とを繋ぐ内壁面９とを備えた構成である。
凹部２Ａは、開口３の径３Ａが機能部品側被取付部３０の最大径３０Ａよりも小さい寸法に形成されるとともに、内面（内底面及び内壁面９）が機能部品側被取付部３０の外面（底部、側面及び頂部）と嵌合する嵌合面に形成される。
即ち、凹部２Ａは、機能部品側被取付部３０の形状である、例えば、角丸長方形（Rounded Rectangle）の短軸を回転軸（凹部２Ａの中心軸２Ｘ）として得られる回転体のような形状の凹部に形成されている。
凹部２Ａの内壁面９は、凹部２Ａの中心軸２Ｘに沿った方向の中央部の径寸法（中心軸２Ｘを中心とした中心軸２Ｘと直交する方向の長さである凹部２Ａの内径寸法）が、凹部２Ａの開口３の径３Ａ及び凹部２Ａの内底部の径よりも大きい寸法である最大径９Ａに形成されている。即ち、凹部２Ａは、機能部品側被取付部３０を挿脱するための出入口となる開口３の径３Ａが、機能部品側被取付部３０の最大径３０Ａ及び当該最大径３０Ａと対応する凹部２Ａの９Ａよりも小さく形成されている。つまり、開口３が拡径されて凹部２Ａ内に挿入された機能部品側被取付部３０の頂部及び側面の頂部側が開口縁３ａ側のゴムで覆われ、凹部２Ａ内に挿入された機能部品側被取付部３０が機能部品取付台座１のゴムの弾性力によって凹部２Ａの内底部側に押圧されて嵌合状態に維持されるように構成されている。 Next, the functional component mounting base 1 will be described with reference to FIGS.
The mounting part 2 of the functional component mounting base 1 has a concave portion 2A corresponding to the shape of the functional component-side mounted portion 30, and the functional component-side mounted portion 30 inserted into the concave portion 2A is the functional component mounting base 1 of the functional component mounting base 1. It is configured to be fitted into the recess 2A by rubber elasticity.
The concave portion 2A into which the functional component side attached portion 30 is fitted includes a circular opening 3 serving as an entrance for inserting and removing the functional component side attached portion 30 with respect to the concave portion 2A, and an inner bottom portion facing the opening 3. And an inner wall surface 9 that connects the opening 3 and the inner bottom portion.
The recess 2 </ b> A is formed such that the diameter 3 </ b> A of the opening 3 is smaller than the maximum diameter 30 </ b> A of the functional component side attached portion 30, and the inner surface (inner bottom surface and inner wall surface 9) is the outer surface of the functional component side attached portion 30. It is formed in the fitting surface which fits (bottom part, side surface, and top part).
That is, the concave portion 2A has the shape of the functional component side attached portion 30, for example, a shape like a rotating body obtained by using a short axis of a rounded rectangle as a rotation axis (a central axis 2X of the concave portion 2A). Is formed in the recess.
The inner wall surface 9 of the recess 2A has a diameter dimension of the center portion in the direction along the center axis 2X of the recess 2A (inner diameter dimension of the recess 2A having a length in a direction perpendicular to the center axis 2X with the center axis 2X as a center). Is formed to have a maximum diameter 9A that is larger than the diameter 3A of the opening 3 of the recess 2A and the diameter of the inner bottom portion of the recess 2A. That is, the concave portion 2A has a diameter 3A of the opening 3 serving as an entrance for inserting / removing the functional component side attached portion 30 so that the maximum diameter 30A of the functional component side attached portion 30 corresponds to the maximum diameter 30A. Is smaller than 9A. That is, the functional component side attached portion 30 having the opening 3 expanded in diameter and inserted into the recess 2A is covered with the rubber on the opening edge 3a side and the functional component side inserted into the recess 2A. The mounted portion 30 is configured to be pressed and kept in the fitted state by the elastic force of the rubber of the functional component mounting base 1 toward the inner bottom portion side of the recess 2A.

また、凹部２Ａの内底部は、機能部品側被取付部３０の底部に形成された凹凸部（２つの半円形凹部３４，３５、円環面（凸部）３２、仕切凸部（凸部）３３）の面と嵌合する凹凸部に形成されている。
つまり、図４，図６に示すように、凹部２Ａの内底部は、機能部品側被取付部３０の底部に形成された２つの半円形凹部３４，３５に嵌合する２つの半円形凸部５，６と、円環面３２及び当該円環面３２と連続する側面（円弧面３１）の底部が嵌合される円環凹部７と、仕切凸部３３が嵌合されて２つの半円形凸部５，６を仕切る機能部品取付台座側凹部としての仕切凹部８とを備えた構成である。２つの半円形凸部５，６は、仕切凸部３３（被取付部側凸部）を挟む機能部品取付台座側凹部（機能部品取付部材側凹部）としての仕切凹部８の両側に位置される各凸部として機能する。
また、機能部品取付台座１の底面４は、タイヤ６０の内面７０に接着材を介して固定される固定部として機能する。当該底面４は、凹部２Ａの中心軸２Ｘを中心とする例えば円形面により形成され、この円形面の径が、凹部２Ａの最大径９Ａよりも大きい寸法に形成されている。当該底面４は、凹部２Ａの中心軸２Ｘと直交する平面に形成される。
また、機能部品取付台座１の外壁面１０は、開口３の開口縁３ａと底面４の外周縁４ａとを繋ぐ傾斜面に形成される。この傾斜面は、開口３の開口縁３ａ側及び底面４の外周縁４ａ側が緩斜面に形成されて、中心軸２Ｘに沿った方向の中央部が急斜面となるように形成されていることにより、開口３の開口縁３ａ側及び底面４の外周縁４ａ側のゴムの肉厚が薄くなるように構成されている。このように、開口３の開口縁３ａ側のゴムの肉厚が薄くなるように構成されていることにより、機能部品側被取付部３０を凹部２Ａ内に嵌合する際に開口３を拡径する作業が容易となる。また、底面４の外周縁４ａ側のゴムの肉厚が薄くなるように構成されていることにより、外周縁４ａ側とタイヤ６０の内面７０との密着性が高まり、外周縁４ａからの剥離が抑制される。 Further, the inner bottom portion of the recess 2A is an uneven portion (two semicircular recesses 34 and 35, an annular surface (convex portion) 32, a partition convex portion (convex portion) formed on the bottom of the functional component side attached portion 30. 33) is formed on the concavo-convex portion that fits the surface.
That is, as shown in FIGS. 4 and 6, the inner bottom portion of the recess 2 </ b> A has two semicircular protrusions that fit into the two semicircular recesses 34 and 35 formed on the bottom of the functional component side attached portion 30. 5, 6, the annular concave portion 7 into which the bottom of the annular surface 32 and the side surface (arc surface 31) continuous with the annular surface 32 is fitted, and the partition convex portion 33 are fitted into two semicircles It is the structure provided with the partition recessed part 8 as a functional component attachment base side recessed part which partitions the convex parts 5 and 6. FIG. The two semicircular convex portions 5 and 6 are positioned on both sides of the partition concave portion 8 as a functional component mounting base side concave portion (functional component mounting member side concave portion) sandwiching the partition convex portion 33 (attached portion side convex portion). It functions as each convex part.
In addition, the bottom surface 4 of the functional component mounting base 1 functions as a fixing portion that is fixed to the inner surface 70 of the tire 60 via an adhesive. The bottom surface 4 is formed of, for example, a circular surface centered on the central axis 2X of the recess 2A, and the diameter of the circular surface is larger than the maximum diameter 9A of the recess 2A. The bottom surface 4 is formed on a plane orthogonal to the central axis 2X of the recess 2A.
The outer wall surface 10 of the functional component mounting base 1 is formed as an inclined surface that connects the opening edge 3 a of the opening 3 and the outer peripheral edge 4 a of the bottom surface 4. The inclined surface is formed such that the opening edge 3a side of the opening 3 and the outer peripheral edge 4a side of the bottom surface 4 are formed as gentle slopes, and the central part in the direction along the central axis 2X is formed as a steep slope. The thickness of the rubber on the opening edge 3 a side of the opening 3 and the outer peripheral edge 4 a side of the bottom surface 4 is configured to be thin. As described above, the thickness of the rubber on the opening edge 3a side of the opening 3 is configured to be thin, so that the diameter of the opening 3 is increased when the functional component side attached portion 30 is fitted into the recess 2A. Work becomes easier. In addition, since the thickness of the rubber on the outer peripheral edge 4a side of the bottom surface 4 is reduced, the adhesion between the outer peripheral edge 4a side and the inner surface 70 of the tire 60 is increased, and peeling from the outer peripheral edge 4a is prevented. It is suppressed.

実施形態１では、仕切凹部８（機能部品取付台座側凹部）は、図４，図６に示すように、底面の幅寸法８Ａが開口の幅寸法８Ｂよりも小さく形成されることによって壁面８ａ，８ａが傾斜面に形成されている。即ち、仕切凹部８は、機能部品取付台座１の底面４側から凹部２Ａの開口３側に向けて延長する壁面８ａ，８ａが、互いに凹部２Ａの中心軸２Ｘから離れる方向に傾斜する傾斜面に形成される。そして、壁面８ａ，８ａと対応する仕切凸部３３の壁面３３ａ，３３ａが壁面８ａ，８ａと同じ傾斜角の傾斜面に形成されている。
また、仕切凹部８に嵌合される被取付部側凸部としての仕切凸部３３は、図３，図５に示すように、幅寸法、即ち、仕切凹部８の底面の幅寸法８Ａと対応する凸部根元側幅寸法３３Ａが幅寸法８Ａよりも大きく形成されるとともに、仕切凹部８の開口の幅寸法８Ｂと対応する凸部先端側幅寸法３３Ｂが幅寸法８Ｂよりも大きく形成されたことによって、仕切凹部８と仕切凸部３３とがしばりばめ状態に嵌合される構成となっている。 In the first embodiment, as shown in FIGS. 4 and 6, the partition recess 8 (functional component mounting base side recess) is formed such that the bottom surface width dimension 8 </ b> A is smaller than the opening width dimension 8 </ b> B. 8a is formed on the inclined surface. That is, the partition recess 8 is an inclined surface in which the wall surfaces 8a, 8a extending from the bottom surface 4 side of the functional component mounting base 1 toward the opening 3 side of the recess 2A are inclined in a direction away from the central axis 2X of the recess 2A. It is formed. And the wall surfaces 33a and 33a of the partition convex part 33 corresponding to the wall surfaces 8a and 8a are formed in the inclined surface of the same inclination angle as the wall surfaces 8a and 8a.
Moreover, the partition convex part 33 as a to-be-attached part side convex part fitted to the partition concave part 8 respond | corresponds with the width dimension, ie, the width dimension 8A of the bottom face of the partition recessed part 8, as shown in FIG. The convex root side width dimension 33A is formed larger than the width dimension 8A, and the convex leading end side width dimension 33B corresponding to the opening width dimension 8B of the partitioning concave part 8 is formed larger than the width dimension 8B. Thus, the partition recess 8 and the partition protrusion 33 are fitted in a tight fit state.

当該構成によれば、加速度センサ５１が埋設された仕切凸部３３の図３中の左右幅（凸部根元側幅寸法３３Ａ及び凸部先端側幅寸法３３Ｂ）を仕切凹部８の図４中の左右幅（幅寸法８Ａ及び幅寸法８Ｂ）よりも広くしたことで、仕切凸部３３と仕切凹部８とが嵌合される場合、加速度センサ５１が埋設された仕切凸部３３の壁面３３ａ，３３ａが仕切凹部８の壁面８ａ，８ａを左右に押し分ける際の反力によって仕切凸部３３がきつく締め付けられて拘束されることになる。
即ち、仕切凸部３３の壁面３３ａ，３３ａと仕切凹部８の壁面８ａ，８ａとの間に隙間ができてしまう場合、タイヤ６０の内面７０に発生する微小な振動が上記隙間部分で吸収されてしまって、振動を正確に計測できない恐れがあるが、実施形態１の機能部品装置５０によれば、機能部品側被取付部３０の底部に形成された仕切凸部３３内に加速度センサ５１が埋設されたので、加速度センサ５１をタイヤ６０の内面に近付けることができるとともに、機能部品２９の機能部品側被取付部３０が凹部２Ａに嵌合状態に取付けられた場合に、加速度センサ５１を埋設した仕切凸部３３が締め付けられて拘束され、仕切凸部３３の壁面３３ａ，３３ａと仕切凹部８の壁面８ａ，８ａとが隙間無く密着した状態となるため、加速度センサ５１がタイヤ６０の内面７０に発生する振動を正確に計測できる機能部品装置５０となる。 According to this configuration, the left and right widths in FIG. 3 of the partition convex portion 33 in which the acceleration sensor 51 is embedded (the convex portion root side width dimension 33A and the convex tip end side width dimension 33B) are shown in FIG. When the partition convex portion 33 and the partition concave portion 8 are fitted by being wider than the left and right width (width dimension 8A and width dimension 8B), the wall surfaces 33a and 33a of the partition convex portion 33 in which the acceleration sensor 51 is embedded. However, the partition convex portion 33 is tightened and restrained by the reaction force when the wall surfaces 8a, 8a of the partition concave portion 8 are pushed to the left and right.
That is, when a gap is formed between the wall surfaces 33a and 33a of the partition convex portion 33 and the wall surfaces 8a and 8a of the partition recess 8, minute vibrations generated on the inner surface 70 of the tire 60 are absorbed by the gap portion. However, according to the functional component device 50 of the first embodiment, the acceleration sensor 51 is embedded in the partition convex portion 33 formed at the bottom of the functional component-side mounted portion 30. Therefore, the acceleration sensor 51 can be brought close to the inner surface of the tire 60, and the acceleration sensor 51 is embedded when the functional component side attached portion 30 of the functional component 29 is attached to the recessed portion 2A. The partition convex portion 33 is tightened and restrained, and the wall surfaces 33a and 33a of the partition convex portion 33 and the wall surfaces 8a and 8a of the partition concave portion 8 are in close contact with each other, so that the acceleration sensor 51 is tied. 60 vibration generated on the inner surface 70 of the functional component unit 50 can be accurately measured.

尚、機能部品側被取付部３０を凹部２Ａに取付ける際には、機能部品取付台座１の開口３を拡げて取付部２の凹部２Ａ内に機能部品側被取付部３０を挿入し、機能部品側被取付部３０の底部に形成された凹凸部（２つの半円形凹部３４，３５、円環面（凸部）３２、仕切凸部（凸部）３３）と取付部２の内底部に形成された凹凸面（２つの半円形凸部５，６、円環凹部７、仕切凹部８）とを嵌合させることで、機能部品２９が機能部品取付台座１の凹部２Ａに嵌合状態に取付けられる。
また、機能部品取付台座１は、例えば図１に示すように、取付部２の中心軸２Ｘとタイヤ６０の赤道面６０Ｘとが一致するようにタイヤ６０の内面７０上に位置され、かつ、図２に示すように、２つの半円形凸部５，６がタイヤ６０の周方向に沿って並ぶように、底面４とタイヤ６０の内面７０とが接着材等によって接着されることによって、タイヤ６０の内面７０に取付けられる。
尚、機能部品２９が機能部品取付台座１に取付けられた機能部品装置５０を構成した後、当該機能部品装置５０における機能部品取付台座１の底面４とタイヤ６０の内面７０とを接着材等によって接着したり、あるいは、機能部品取付台座１の底面４とタイヤ６０の内面７０とを接着材等によって接着した後に、タイヤ６０の内面７０に取付けられた機能部品取付台座１の凹部２Ａに機能部品２９を取付けることによって、機能部品２９が機能部品取付台座１を介してタイヤ６０の内面７０に取付けられる。
即ち、図２に示すように、加速度センサ５１を埋設した被取付部側凸部としての仕切凸部３３と嵌合する機能部品取付台座側凹部としての仕切凹部８の壁面８ａ，８ａがタイヤ６０の周方向と交差（好ましくは直交）するように、機能部品装置５０がタイヤ６０の内面７０に取付けられた構成のタイヤ６０とした。当該タイヤ６０が、図２のＲ方向に回転（転動）した場合、加速度センサ５１を埋設した仕切凸部３３が締め付けられて拘束され、仕切凸部３３の壁面３３ａ，３３ａと仕切凹部８の壁面８ａ，８ａとが隙間無く密着した状態となるため、加速度センサ５１がタイヤ６０の内面７０に発生する振動を正確に計測できるタイヤ６０となる。 When mounting the functional component side mounted portion 30 in the recess 2A, the functional component mounting base 30 is inserted into the recess 2A of the mounting portion 2 by expanding the opening 3 of the functional component mounting base 1, Concavities and convexities (two semicircular concave portions 34 and 35, annulus surface (convex portion) 32, partition convex portion (convex portion) 33) formed on the bottom portion of the side attachment portion 30 and the inner bottom portion of the attachment portion 2. By fitting the uneven surfaces (the two semicircular convex portions 5 and 6, the annular concave portion 7 and the partitioning concave portion 8), the functional component 29 is fitted in the concave portion 2A of the functional component mounting base 1. It is done.
Further, for example, as shown in FIG. 1, the functional component mounting base 1 is positioned on the inner surface 70 of the tire 60 so that the central axis 2X of the mounting portion 2 and the equator surface 60X of the tire 60 coincide with each other. 2, the tire 60 is formed by bonding the bottom surface 4 and the inner surface 70 of the tire 60 with an adhesive or the like so that the two semicircular convex portions 5 and 6 are arranged along the circumferential direction of the tire 60. Attached to the inner surface 70.
In addition, after the functional component 29 comprises the functional component apparatus 50 attached to the functional component mounting base 1, the bottom surface 4 of the functional component mounting base 1 and the inner surface 70 of the tire 60 in the functional component apparatus 50 are bonded with an adhesive or the like. The functional component is attached to the recess 2A of the functional component mounting base 1 attached to the inner surface 70 of the tire 60 after the bottom surface 4 of the functional component mounting base 1 and the inner surface 70 of the tire 60 are bonded with an adhesive or the like. By attaching 29, the functional component 29 is attached to the inner surface 70 of the tire 60 via the functional component mounting base 1.
That is, as shown in FIG. 2, the wall surfaces 8 a, 8 a of the partition recess 8 as the functional component mounting base side recess that fits with the partition projection 33 as the mounted portion side protrusion embedded with the acceleration sensor 51 are tires 60. The tire 60 has a configuration in which the functional component device 50 is attached to the inner surface 70 of the tire 60 so as to intersect (preferably orthogonal) the circumferential direction. When the tire 60 rotates (rolls) in the R direction in FIG. 2, the partition convex portion 33 in which the acceleration sensor 51 is embedded is tightened and restrained, and the wall surfaces 33 a and 33 a of the partition convex portion 33 and the partition concave portion 8 Since the wall surfaces 8a and 8a are in close contact with each other without a gap, the acceleration sensor 51 is a tire 60 that can accurately measure vibration generated on the inner surface 70 of the tire 60.

実施形態１の機能部品装置５０がタイヤ６０の内面７０に取付けられたタイヤ６０においては、車両走行時、タイヤ６０の周面の一部が非接地部から接地部に移行する際の境界である踏込端、及び、タイヤ６０の周面の一部が接地部から非接地部に移行する際の境界である蹴出端では、タイヤ６０の回転に伴って生じる向心力のアンバランス状態が発生し、機能部品装置５０に慣性力が加わる。この場合、タイヤの内面が前後方向に振動した場合、機能部品２９のタイヤ中心軸側（突出部３７の端部側）は大きく振動するが、加速度センサ５１が埋設されている被取付部側凸部としての仕切凸部３３は、タイヤ６０の内面７０近くに位置されて、かつ、拘束されてタイヤ６０の内面７０に強固に支持され、仕切凸部３３の壁面３３ａ，３３ａと仕切凹部８の壁面８ａ，８ａとが隙間無く密着した状態が維持されるので、タイヤ６０の内面７０の振動を加速度センサ５１まで余すことなく伝達させることが可能となり、タイヤ６０の内面７０に発生する振動を正確に計測できるタイヤ６０を得ることができる。   In the tire 60 in which the functional component device 50 according to the first embodiment is attached to the inner surface 70 of the tire 60, it is a boundary when a part of the peripheral surface of the tire 60 shifts from the non-grounding portion to the grounding portion when the vehicle travels. An unbalanced state of centripetal force generated with the rotation of the tire 60 occurs at the stepping end and the kicking end that is a boundary when a part of the peripheral surface of the tire 60 transitions from the grounded portion to the non-grounded portion. Inertial force is applied to the functional component device 50. In this case, when the inner surface of the tire vibrates in the front-rear direction, the tire center axis side of the functional component 29 (the end portion side of the protruding portion 37) vibrates greatly, but the attached portion-side convexity in which the acceleration sensor 51 is embedded. The partition convex portion 33 as a portion is located near the inner surface 70 of the tire 60 and is restrained and firmly supported by the inner surface 70 of the tire 60, so that the wall surfaces 33 a and 33 a of the partition convex portion 33 and the partition concave portion 8 Since the state in which the wall surfaces 8a and 8a are in close contact with each other is maintained, the vibration of the inner surface 70 of the tire 60 can be transmitted to the acceleration sensor 51 without leaving, and the vibration generated on the inner surface 70 of the tire 60 can be accurately detected. A tire 60 that can be measured easily can be obtained.

実施形態２
図７に示すように、実施形態１の仕切凹部８に相当する仕切凹部８Ｘ（機能部品取付台座側凹部）は、底面の幅寸法と開口の幅寸法とが同じ寸法に形成されて底面と開口とを繋ぐ壁面８ｃ，８ｃが平面に形成されるとともに、実施形態１の仕切凸部３３に相当する仕切凸部３３Ｘ（被取付部側凸部）は、仕切凹部８Ｘの底面及び開口の幅寸法と同じか若干大きい幅寸法に形成されて当該仕切凹部８Ｘに嵌合する凸部に形成された構成とする。即ち、仕切凹部８Ｘの壁面８ｃ，８ｃは機能部品側被取付部３０の中心軸３０Ｘと平行な面に形成され、仕切凸部３３Ｘの壁面３３ｃ，３３ｃは凹部２Ａの中心軸２Ｘと平行な面に形成された構成とする。
また、仕切凸部３３Ｘを挟む仕切凹部８Ｘの両側に位置される実施形態１の半円形凸部５，６に相当する半円形凸部５Ｘ，６Ｘ（各機能部品取付部材側凸部）は、仕切凸部３３Ｘの両方の壁面３３ｃ，３３ｃと嵌合する壁面（即ち、仕切凹部８Ｘの壁面８ｃ，８ｃ）以外の壁面、即ち、機能部品取付台座１の底面４側から凹部２Ａの開口３側に向けて延長する壁面が、凹部２Ａの中心軸２Ｘに近づくよう傾斜する傾斜面５ｄ，６ｄに形成される。また、傾斜面５ｄと対応する半円形凹部３４Ｘの壁面３４ａ、及び、傾斜面６ｄと対応する半円形凹部３５Ｘの壁面３５ａが傾斜面５ｄ，６ｄと同じ傾斜角の傾斜面に形成されている。
そして、仕切凹部８Ｘの両側に位置される一方の半円形凸部５Ｘ（一方の機能部品取付部材側凸部）の傾斜面（壁面）５ｄと他方の半円形凸部６（他方の機能部品取付部材側凸部）の傾斜面（壁面）６ｄとの間の幅寸法が、一方の半円形凸部５Ｘの傾斜面（壁面）５ｄと対応するように機能部品側被取付部３００の底部に設けられた一方の被取付部側凹部としての半円形凹部３４Ｘ（実施形態１の半円形凹部３４に相当）の壁面である傾斜面３４ａ（一方の被取付部側傾斜面）と、他方の半円形凸部６Ｘの傾斜面（壁面）６ｄと対応するように機能部品側被取付部３００の底部に設けられた他方の被取付部側凹部としての半円形凹部３５Ｘ（実施形態１の半円形凹部３５に相当）の壁面である傾斜面３５ａ（他方の被取付部側傾斜面）との間の幅寸法よりも大きい寸法となるように構成される。
即ち、図７に示すように、傾斜面５ｄと傾斜面６ｄとの間の幅寸法が、傾斜面３４ａと傾斜面３５ａとの間の幅寸法よりも大きい寸法となるように構成されたことによって、一方の被取付部側凹部としての半円形凹部３４Ｘと一方の機能部品取付部材側凸部としての半円形凸部５Ｘ、及び、他方の被取付部側凹部としての半円形凹部３５Ｘと他方の機能部品取付部材側凸部としての半円形凸部６Ｘとがしばりばめ状態に嵌合される構成となっている。 Embodiment 2
As shown in FIG. 7, the partition recess 8X (functional component mounting base side recess) corresponding to the partition recess 8 of the first embodiment is formed such that the width dimension of the bottom surface and the width dimension of the opening are the same. Wall surfaces 8c, 8c are connected to each other, and a partition convex portion 33X (attached portion side convex portion) corresponding to the partition convex portion 33 of the first embodiment is a bottom dimension of the partition concave portion 8X and an opening width dimension. It is set as the structure formed in the convex part which is formed in the width dimension same as or slightly large, and fits into the said partition recessed part 8X. That is, the wall surfaces 8c, 8c of the partition recess 8X are formed in a plane parallel to the central axis 30X of the functional component side attached portion 30, and the wall surfaces 33c, 33c of the partition projection 33X are surfaces parallel to the center axis 2X of the recess 2A. It is set as the structure formed in.
In addition, the semicircular convex portions 5X and 6X (the convex portions on each functional component mounting member) corresponding to the semicircular convex portions 5 and 6 of the first embodiment located on both sides of the partition concave portion 8X sandwiching the partition convex portion 33X are: Wall surfaces other than the wall surfaces (that is, the wall surfaces 8c, 8c of the partition recess 8X) that fit both the wall surfaces 33c, 33c of the partition protrusion 33X, that is, the opening 3 side of the recess 2A from the bottom surface 4 side of the functional component mounting base 1 Wall surfaces extending toward are formed on inclined surfaces 5d and 6d that are inclined so as to approach the central axis 2X of the recess 2A. The wall surface 34a of the semicircular recess 34X corresponding to the inclined surface 5d and the wall surface 35a of the semicircular recess 35X corresponding to the inclined surface 6d are formed on the inclined surface having the same inclination angle as the inclined surfaces 5d and 6d.
And the inclined surface (wall surface) 5d of one semicircular convex part 5X (one functional component attachment member side convex part) located on both sides of the partitioning concave part 8X and the other semicircular convex part 6 (the other functional component attachment) The width dimension between the inclined surface (wall surface) 6d of the (member-side convex portion) and the inclined surface (wall surface) 5d of one semicircular convex portion 5X is provided at the bottom of the functional component-side mounted portion 300. An inclined surface 34a (one attached portion side inclined surface) which is a wall surface of a semicircular recess 34X (corresponding to the semicircular recess 34 in the first embodiment) as one of the attached portion side recessed portions, and the other semicircular shape The semicircular recess 35X (the semicircular recess 35 of the first embodiment) as the other mounted portion side recess provided on the bottom of the functional component side mounted portion 300 so as to correspond to the inclined surface (wall surface) 6d of the convex portion 6X. Between the inclined surface 35a (the other attached portion side inclined surface) that is the wall surface Configured to be larger than the width.
That is, as shown in FIG. 7, the width between the inclined surface 5d and the inclined surface 6d is configured to be larger than the width between the inclined surface 34a and the inclined surface 35a. The semicircular recess 34X as one mounting portion side recess, the semicircular projection 5X as one functional component mounting member side convex portion, and the semicircular recess 35X as the other mounting portion side recess and the other The semicircular convex portion 6X as the functional component mounting member side convex portion is configured to be fitted in a tight fit state.

当該構成によれば、傾斜面５ｄと傾斜面６ｄとの間の幅（図７中の左右幅）を傾斜面３４ａと傾斜面３５ａとの間の幅寸法（図７中の左右幅）よりも広くしたことで、半円形凹部３４Ｘと半円形凸部５Ｘ、及び、半円形凹部３５Ｘと半円形凸部６Ｘとが嵌合される場合、傾斜面５ｄ，６ｄが傾斜面３４ａ，３５ａに押圧されて、半円形凸部５Ｘ，６Ｘが中心軸２Ｘ側に押し縮められることによって、加速度センサ５１を埋設した仕切凸部３３がきつく締め付けられて拘束されることになる。
従って、実施形態１の機能部品装置５０と同様に、実施形態１の機能部品装置５０によれば、機能部品側被取付部３０の底部に形成された仕切凸部３３Ｘ内に加速度センサ５１が埋設されたので、加速度センサ５１をタイヤ６０の内面に近付けることができるとともに、機能部品２９の機能部品側被取付部３０が凹部２Ａに嵌合状態に取付けられた場合に、加速度センサ５１を埋設した仕切凸部３３Ｘが締め付けられて拘束され、仕切凸部３３Ｘの壁面３３ｃ，３３ｃと仕切凹部８Ｘの壁面８ｃ，８ｃとが隙間無く密着状態となるため、加速度センサ５１がタイヤ６０の内面７０に発生する振動を正確に計測できる機能部品装置５０となる。 According to this configuration, the width between the inclined surface 5d and the inclined surface 6d (the left-right width in FIG. 7) is larger than the width dimension between the inclined surface 34a and the inclined surface 35a (the left-right width in FIG. 7). By widening, when the semicircular concave portion 34X and the semicircular convex portion 5X and the semicircular concave portion 35X and the semicircular convex portion 6X are fitted, the inclined surfaces 5d and 6d are pressed against the inclined surfaces 34a and 35a. As the semicircular convex portions 5X and 6X are compressed toward the central axis 2X, the partition convex portion 33 in which the acceleration sensor 51 is embedded is tightened and restrained.
Therefore, similarly to the functional component device 50 of the first embodiment, according to the functional component device 50 of the first embodiment, the acceleration sensor 51 is embedded in the partition convex portion 33X formed at the bottom of the functional component-side attached portion 30. Therefore, the acceleration sensor 51 can be brought close to the inner surface of the tire 60, and the acceleration sensor 51 is embedded when the functional component side attached portion 30 of the functional component 29 is attached to the recessed portion 2A. The partition convex portion 33X is tightened and restrained, and the wall surfaces 33c, 33c of the partition convex portion 33X and the wall surfaces 8c, 8c of the partition concave portion 8X are in close contact with each other, so that the acceleration sensor 51 is generated on the inner surface 70 of the tire 60. Thus, the functional component device 50 can accurately measure the vibration to be performed.

実施形態３
本発明の機能部品装置は、機能部品と、機能部品の機能部品側被取付部を嵌合状態に取付けるための凹部と当該凹部の内底部と対向してタイヤの内面に取付けられる底面とを有したゴム製の機能部品取付部材とを備えた機能部品装置であって、機能部品側被取付部の底部に設けられた被取付部側凸部と、凹部の内底部に設けられて前記被取付部側凸部と嵌合する機能部品取付部材側凹部と、被取付部側凸部内に埋設された振動検出手段としての加速度センサとを、を備えた構成であればよい。
当該構成であっても、加速度センサをタイヤの内面に近付けることができるとともに、機能部品の機能部品側被取付部が凹部に嵌合状態に取付けられた場合に、加速度センサを埋設した被取付部側凸部が当該被取付部側凸部を挟む機能部品取付部材側凹部の両側の凸部によって締め上げられて拘束され、機能部品取付部材側凹部の壁面と当該機能部品取付部材側凹部に嵌合する被取付部側凸部の壁面とが隙間無く密着した状態となるため、加速度センサがタイヤの内面に発生する振動を正確に計測できる機能部品装置を得ることができるからである。 Embodiment 3
The functional component device of the present invention has a functional component, a concave portion for mounting the functional component-side mounted portion of the functional component in a fitted state, and a bottom surface that is attached to the inner surface of the tire facing the inner bottom portion of the concave portion. A functional component device including a functional component mounting member made of rubber, wherein the mounted portion side convex portion provided at the bottom of the functional component side mounted portion, and the mounted portion provided at the inner bottom portion of the concave portion The functional component mounting member-side concave portion to be fitted to the portion-side convex portion and an acceleration sensor as vibration detecting means embedded in the attached portion-side convex portion may be used.
Even if it is the said structure, when the acceleration sensor can be brought close to the inner surface of the tire and the functional component side mounted portion of the functional component is fitted in the recessed portion, the mounted portion in which the acceleration sensor is embedded The side convex portion is tightened and restrained by the convex portions on both sides of the concave portion on the functional component mounting member side that sandwich the convex portion on the mounted portion side, and is fitted into the wall surface of the concave portion on the functional component mounting member side and the concave portion on the functional component mounting member side. This is because the wall surface of the fitting portion-side convex portion to be joined is in close contact with the gap, so that a functional component device can be obtained in which the acceleration sensor can accurately measure the vibration generated on the inner surface of the tire.

実施形態２，３の機能部品装置がタイヤの内面に取付けられたタイヤ、即ち、加速度センサを埋設した被取付部側凸部と嵌合する機能部品取付台座側凹部の壁面がタイヤの周方向と交差（好ましくは直交）するように、機能部品装置がタイヤの内面に取付けられた構成のタイヤであっても、実施形態１のタイヤと同様に、タイヤの内面に発生する振動を正確に計測できるタイヤとなる。   The functional component device according to the second and third embodiments is mounted on the inner surface of the tire, that is, the wall surface of the functional component mounting base side recess that fits the mounted portion side convex portion in which the acceleration sensor is embedded is the circumferential direction of the tire. Even if the functional component device is a tire mounted on the inner surface of the tire so as to intersect (preferably orthogonal), the vibration generated on the inner surface of the tire can be accurately measured as in the tire of the first embodiment. Become a tire.

一般に振動伝達性能は振動が伝わる部材の剛性が高いほど良好である。
図２に示した実施形態１の構成の機能部品装置、図７に示した実施形態２の構成の機能部品装置、実施形態３の構成の機能部品装置、図８に示した従来の構成の機能部品装置をそれぞれタイヤの内面に装着した際の、加速度センサの位置でのタイヤ周方向の剛性を計算した。結果は以下の通りである。
・実施形態１の機能部品装置→３５０００（Ｎ／ｍ）
・実施形態２の機能部品装置→４００００（Ｎ／ｍ）
・実施形態３の機能部品装置→３００００（Ｎ／ｍ）
・従来の構成の機能部品装置→２００００（Ｎ／ｍ）
即ち、実施形態１乃至３の機能部品装置では、加速度センサを埋設した被取付部側凸部が拘束されるため、加速度センサの位置でのタイヤ周方向の剛性が向上するので、振動伝達特性が改善され、加速度センサがタイヤの内面に発生する振動を正確に計測できる機能部品装置となる。
一方、従来の構成の機能部品装置では、機能部品の機能部品側被取付部の底部と機能部品取付部材の内底部との機械的凹凸嵌合が無い構成では、底面接触部ですべりが生じるため、機能部品装置の支持剛性が低くなり、振動伝達特性が悪化する。 In general, the higher the rigidity of a member to which vibration is transmitted, the better the vibration transmission performance.
The functional component device of the configuration of the first embodiment shown in FIG. 2, the functional component device of the configuration of the second embodiment shown in FIG. 7, the functional component device of the configuration of the third embodiment, and the function of the conventional configuration shown in FIG. The rigidity in the tire circumferential direction at the position of the acceleration sensor when each of the component devices was mounted on the inner surface of the tire was calculated. The results are as follows.
-Functional component device of Embodiment 1 → 35000 (N / m)
-Functional component device of Embodiment 2 → 40000 (N / m)
-Functional component device of Embodiment 3 → 30000 (N / m)
・ Conventional functional device → 20000 (N / m)
That is, in the functional component device according to the first to third embodiments, since the attached portion side convex portion in which the acceleration sensor is embedded is restrained, the rigidity in the tire circumferential direction at the position of the acceleration sensor is improved. The functional component device is improved, and the acceleration sensor can accurately measure the vibration generated on the inner surface of the tire.
On the other hand, in the functional component device of the conventional configuration, in the configuration where there is no mechanical uneven fitting between the bottom of the functional component side mounted portion of the functional component and the inner bottom of the functional component mounting member, slip occurs at the bottom contact portion. The support rigidity of the functional component device is lowered, and the vibration transmission characteristics are deteriorated.

本発明の機能部品装置は、振動検出手段を埋設した被取付部側凸部と嵌合する機能部品取付台座側凹部の壁面がタイヤの周方向と交差（好ましくは直交）するように取付けられれば、タイヤの内面のどこに取付けられても構わない。   If the functional component device of the present invention is mounted so that the wall surface of the concave portion on the functional component mounting base side that fits the convex portion on the mounted portion side in which the vibration detecting means is embedded crosses the tire circumferential direction (preferably orthogonal) It may be attached anywhere on the inner surface of the tire.

機能部品は、被取付部側凸部に少なくとも振動検出手段を埋設した構成であって、機能部品側被取付部及び機能部品側被取付部より突出するように形成された突出部を備えた構成であればよい。   The functional component has a configuration in which at least vibration detecting means is embedded in the convex portion on the mounted portion side, and includes a protruding portion formed so as to protrude from the functional component-side mounted portion and the functional component-side mounted portion. If it is.

機能部品側被取付部は、中心軸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。   The functional component-side mounted portion is a rotating body having a side surface formed in a diameter larger than the diameter of both ends (bottom, top) in the direction along the central axis, or a column, or A shape such as a disc body or the like, for example, a spheroid obtained by using the minor axis of the ellipse as a rotation axis (center axis), or a shape such as a cylindrical body or a disc body may be used.

１ 機能部品取付台座（機能部品取付部材）、２Ａ 凹部、
４ 機能部品取付台座の底面、５Ｘ 半円形凸部（一方の機能部品取付部材側凸部）、
５ｄ 傾斜面、６Ｘ 半円形凸部（他方の機能部品取付部材側凸部）、６ｄ 傾斜面、
８ 仕切凹部（機能部品取付部材側凹部）、８Ａ，８Ｂ 仕切凹部の幅寸法、
８ａ 傾斜面、２９ 機能部品、３０ 機能部品側被取付部、
３３Ｘ 仕切凸部（被取付部側凸部）、 ３３Ａ，３３Ｂ 仕切凸部の幅寸法、
３４Ｘ 半円形凹部（一方の被取付部側凹部）、３４ａ 傾斜面
３５Ｘ 半円形凹部（他方の被取付部側凹部）、３５ａ 傾斜面、５０ 機能部品装置、５１ 加速度センサ（振動検出手段）、６０ タイヤ、７０ タイヤの内面、
Ｒ タイヤの回転（転動）方向。 1 functional component mounting base (functional component mounting member), 2A recess,
4 Bottom of functional component mounting base, 5X semicircular convex part (one functional component mounting member side convex part),
5d inclined surface, 6X semicircular convex portion (the other functional component mounting member side convex portion), 6d inclined surface,
8 partition recess (functional component mounting member side recess), 8A, 8B width dimension of partition recess,
8a inclined surface, 29 functional parts, 30 functional part side mounting part,
33X partition convex part (attached part side convex part), 33A, 33B width dimension of partition convex part,
34X semicircular recess (one attached portion side recessed portion), 34a inclined surface 35X semicircular recessed portion (the other attached portion side recessed portion), 35a inclined surface, 50 functional component device, 51 acceleration sensor (vibration detecting means), 60 Tire, 70 inner surface of tire,
R Tire rotation (rolling) direction.

Claims (4)

機能部品と、
前記機能部品の機能部品側被取付部を嵌合状態に取付けるための凹部と当該凹部の内底部と対向してタイヤの内面に取付けられる底面とを有したゴム製の機能部品取付部材と、
を備えた機能部品装置であって、
前記機能部品側被取付部の底部に設けられた被取付部側凸部と、
前記凹部の内底部に設けられて前記被取付部側凸部と嵌合する機能部品取付部材側凹部と、
前記被取付部側凸部内に埋設された振動検出手段と、
を備えたことを特徴とする機能部品装置。 Functional parts,
A functional component mounting member made of rubber having a concave portion for mounting the functional component-side mounted portion of the functional component in a fitted state and a bottom surface that is mounted on the inner surface of the tire so as to face the inner bottom portion of the concave portion,
A functional component device comprising:
Mounted portion side convex portion provided at the bottom of the functional component side mounted portion,
A functional component mounting member side concave portion that is provided on the inner bottom portion of the concave portion and fits with the mounted portion side convex portion;
Vibration detecting means embedded in the attached portion side convex portion;
A functional component device comprising: 前記機能部品取付部材側凹部は、底面の幅寸法が開口の幅寸法よりも小さく形成されることによって壁面が傾斜面に形成され、
前記機能部品取付部材側凹部に嵌合される前記被取付部側凸部は、幅寸法が、前記機能部品取付部材側凹部の幅寸法よりも大きく形成され、
前記機能部品取付部材側凹部と前記被取付部側凸部とがしばりばめ状態に嵌合されたこを特徴とする請求項１に記載の機能部品装置。 The functional component mounting member side recess has a wall surface formed on an inclined surface by forming the bottom surface width dimension smaller than the opening width dimension,
The mounted part side convex part fitted into the functional part mounting member side concave part is formed with a width dimension larger than the width dimension of the functional part mounting member side concave part,
The functional component device according to claim 1, wherein the functional component mounting member side concave portion and the mounted portion side convex portion are fitted in a tight fit state. 前記被取付部側凸部と嵌合する前記機能部品取付部材側凹部は、底面の幅寸法と開口の幅寸法とが同じ寸法に形成されて底面と開口とを繋ぐ壁面が平面に形成され、
前記被取付部側凸部を挟む前記機能部品取付部材側凹部の両側に位置される各機能部品取付部材側凸部は、前記被取付部側凸部の壁面と嵌合する壁面以外の前記機能部品取付部材の前記底面側から前記凹部の開口側に向けて延長する壁面が、前記凹部の中心軸に近づくよう傾斜する傾斜面に形成され、
前記機能部品取付部材側凹部の両側に位置される一方の機能部品取付部材側凸部の傾斜面と他方の機能部品取付部材側凸部の傾斜面との間の幅寸法が、前記一方の機能部品取付部材側凸部の傾斜面と対応する一方の被取付部側凹部の壁面である傾斜面と前記他方の機能部品取付部材側凸部の傾斜面と対応する他方の被取付部側凹部の壁面である傾斜面との間の幅寸法よりも大きい寸法となるように構成され、
前記一方の被取付部側凹部と前記一方の機能部品取付部材側凸部、及び、前記他方の被取付部側凹部と前記他方の機能部品取付部材側凸部とがしばりばめ状態に嵌合されたことを特徴とする請求項１に記載の機能部品装置。 The functional component mounting member-side recess that fits with the mounted-portion-side convex portion is formed such that the width dimension of the bottom surface and the width dimension of the opening are the same, and the wall surface connecting the bottom surface and the opening is formed in a plane,
The functional component mounting member side convex portions located on both sides of the concave portion on the functional component mounting member side sandwiching the convex portion on the mounted portion side are the functions other than the wall surface fitted to the wall surface of the convex portion on the mounted portion side. The wall surface extending from the bottom surface side of the component mounting member toward the opening side of the recess is formed on an inclined surface that is inclined so as to approach the central axis of the recess,
The width dimension between the inclined surface of one functional component mounting member side convex portion and the inclined surface of the other functional component mounting member side convex portion located on both sides of the functional component mounting member side concave portion is the one function. An inclined surface that is a wall surface of the recessed portion on one side of the mounted portion corresponding to the inclined surface of the convex portion on the component mounting member side, and a concave portion on the other mounted portion side that corresponds to the inclined surface of the convex portion on the side of the other functional component mounting member. It is configured to be larger than the width between the inclined surface that is a wall surface,
The one mounted part side recess and the one functional component mounting member side convex part, and the other mounted part side concave part and the other functional part mounting member side convex part are fitted in a tight fit state. The functional component device according to claim 1, wherein the functional component device is provided. 請求項１乃至請求項３のいずれか一項に記載の機能部品装置がタイヤの内面に取付けられたタイヤであって、
前記振動検出手段が埋設された前記被取付部側凸部と嵌合する前記機能部品取付部材側凹部の壁面がタイヤの周方向と交差するように、前記機能部品装置がタイヤの内面に取付けられたことを特徴とするタイヤ。 A functional component device according to any one of claims 1 to 3 is a tire attached to an inner surface of a tire,
The functional component device is attached to the inner surface of the tire so that the wall surface of the concave portion on the functional component mounting member side that fits the convex portion on the mounted portion side where the vibration detecting means is embedded intersects the circumferential direction of the tire. A tire characterized by that.
JP2016045978A 2016-03-09 2016-03-09 Functional component device and tire comprising the functional component device Pending JP2017159794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016045978A JP2017159794A (en) 2016-03-09 2016-03-09 Functional component device and tire comprising the functional component device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016045978A JP2017159794A (en) 2016-03-09 2016-03-09 Functional component device and tire comprising the functional component device

Publications (1)

Publication Number Publication Date
JP2017159794A true JP2017159794A (en) 2017-09-14

Family

ID=59853735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016045978A Pending JP2017159794A (en) 2016-03-09 2016-03-09 Functional component device and tire comprising the functional component device

Country Status (1)

Country Link
JP (1) JP2017159794A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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
US20230114431A1 (en) * 2020-03-19 2023-04-13 Bridgestone Corporation Functional component, structure for attaching functional component, and tire
EP4122721A4 (en) * 2020-03-19 2023-08-02 Bridgestone Corporation Functional component, structure for attaching 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

Similar Documents

Publication Publication Date Title
WO2017150396A1 (en) Functional component attachment member
WO2015129453A1 (en) Functional component attachment base, and tire
JP5756544B2 (en) Steering wheel
US8365782B2 (en) Tire noise reduction device and pneumatic tire
WO2006118202A1 (en) Noise reducing device, manufacturing method for the noise reducing device, and pneumatic tire having the noise reducing device
WO2018173640A1 (en) Functional component attachment base
JP4148987B2 (en) Low noise pneumatic tire
KR20180013177A (en) The multi-resonator
WO2016027724A1 (en) Noise reduction apparatus and pneumatic tire provided with same
US10800214B2 (en) Noise reduction device and pneumatic tire provided with the same
WO2019021730A1 (en) Pneumatic tire
JP2017159794A (en) Functional component device and tire comprising the functional component device
JP2017165271A (en) Functional component device
JP5248458B2 (en) Double structure tire power generator
WO2017170154A1 (en) Tire noise reduction device and pneumatic tire provided with same
JP6684528B2 (en) Functional component mounting device
JP5249676B2 (en) Pneumatic tire with sound control
JP2017165269A (en) Functional component mounting device, and tire
JP5735340B2 (en) Electronic equipment mounting device
JP2017165270A (en) Functional component device
JP4628834B2 (en) Noise reduction device, manufacturing method thereof, and pneumatic tire provided with noise reduction device
JP2017154630A (en) Method and device for mounting functional part assembly
JP6561727B2 (en) Noise reduction device and pneumatic tire provided with the same
JP2014054959A (en) Pneumatic sensor
JP2005219592A (en) Low load noise wheel