JPH03121913A - Core assembly body for pneumatic tire - Google Patents
Core assembly body for pneumatic tireInfo
- Publication number
- JPH03121913A JPH03121913A JP1261079A JP26107989A JPH03121913A JP H03121913 A JPH03121913 A JP H03121913A JP 1261079 A JP1261079 A JP 1261079A JP 26107989 A JP26107989 A JP 26107989A JP H03121913 A JPH03121913 A JP H03121913A
- Authority
- JP
- Japan
- Prior art keywords
- core assembly
- pneumatic tire
- circumferential surface
- rim
- perimeter surface
- 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.)
- Granted
Links
- 239000000314 lubricant Substances 0.000 claims abstract description 16
- 239000013013 elastic material Substances 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000004519 grease Substances 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
-
- 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
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/045—Rotatable supports relative to the rim
-
- 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
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/10—Internal lubrication
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、パンクなどにより、空気入りタイヤの内圧が
低下した場合に、一定距離の安全走行を可能にする空気
入りタイヤ用中子組立体に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a core assembly for a pneumatic tire that enables safe driving for a certain distance when the internal pressure of the pneumatic tire decreases due to a puncture or the like. Regarding.
従来、中子組立体をリムに取り付けた例は過去多数ある
。しかし、それらは殆どが中子組立体をリムにボルト等
で固定しているため、ランフラット（低内圧走行）時、
タイヤと中子組立体との間の周長差のためにタイヤと中
子組立体との間に擦れを生じ、タイヤが破損を生じやす
いという欠点がある。Conventionally, there have been many examples in the past of attaching a core assembly to a rim. However, most of them fix the core assembly to the rim with bolts, etc., so when running flat (low internal pressure running),
The disadvantage is that the difference in circumferential length between the tire and the core assembly causes rubbing between the tire and the core assembly, making the tire susceptible to damage.
これを改善する空気入りタイヤ用中子組立体として、特
公昭５５−３１６３号公報が開示されている。この空気
入りタイヤ用中子組立体は、少なくとも一部が弾性材料
により構成された２個以上の弧状体の各端部を重ね合わ
せて連結することにより環状に組み立てられるとともに
、空気入りタイヤを装着したリムのウェル部外周面に嵌
合されたものである。そして、この中子組立体は、空気
入りタイヤが内圧低下により潰れた場合に、外周面が空
気入りタイヤのクラウン部の内周面と接触するようにな
っており、空気入りタイヤから与えられた力によりリム
のウェル部外周面上を滑って回転し、空気入りタイヤの
クラウン部との間の擦れを防止するようにしている。Japanese Patent Publication No. 55-3163 discloses a core assembly for pneumatic tires that improves this problem. This pneumatic tire core assembly is assembled into an annular shape by overlapping and connecting the ends of two or more arc-shaped bodies, each of which is at least partially made of an elastic material, and is fitted with a pneumatic tire. It is fitted onto the outer circumferential surface of the well portion of the rim. This core assembly is designed so that when the pneumatic tire collapses due to a drop in internal pressure, the outer circumferential surface comes into contact with the inner circumferential surface of the crown of the pneumatic tire. The force causes the rim to slide and rotate on the outer circumferential surface of the well portion of the rim, thereby preventing friction between the rim and the crown of the pneumatic tire.
しかしながら、この空気入りタイヤ用中子組立体におい
ては、中子組立体を装着したタイヤの使用条件のうちで
、実用上有りえる範囲の高い荷重域または高い速度域に
おいて、ランフラット（低内圧走行）時、中子組立体の
リムウェル部との接触面が摩擦によって摩耗を起して走
行不能になると言う欠点がある。However, with this pneumatic tire core assembly, under the operating conditions of the tire equipped with the core assembly, run-flat (low internal pressure running) ), there is a drawback that the contact surface of the core assembly with the rim well part wears out due to friction, making it impossible to run.
本発明は上記事実を考慮し、中子組立体の内周面とＩＪ
ｊｘウェル部との接触面の摩擦熱を低減でき、比較的
長距離の走行を可能にできる空気入りタイヤ用中子組立
体を得ることが目的である。The present invention takes the above-mentioned facts into consideration, and the inner circumferential surface of the core assembly and the IJ
An object of the present invention is to obtain a core assembly for a pneumatic tire that can reduce frictional heat at the contact surface with the jx well portion and can travel a relatively long distance.
上記目的を達成するために本発明は、少なくとも一部が
弾性ｔ、＋料１ごより構成された２個以上の弧状体の各
端部を重ね合わせて連結することにより環状に組立られ
るとともに空気入りタイヤを装着したリムのウェル部外
周面に嵌合され空気入りタイヤが内圧低）により潰れた
場合に外周面が空気入りタイヤのクラウン部内周面と接
触し内周面がウェル部外周面上を滑って回転する空気入
りタイヤ用中子組立体であって、内周面に形成された溝
と、内周面とリムのウェル部外周面との間に充填された
潤滑剤と、有することを特徴としている。In order to achieve the above object, the present invention has two or more arcuate bodies, at least a portion of which is made of elastic material, which are assembled into an annular shape by overlapping and connecting the ends of two or more arcuate bodies, and which are made of elastic material. If the pneumatic tire is fitted onto the outer circumferential surface of the well of a rim fitted with a pneumatic tire and is crushed due to low internal pressure, the outer circumferential surface will come into contact with the inner circumferential surface of the crown of the pneumatic tire, and the inner circumferential surface will be on the outer circumferential surface of the well. A core assembly for a pneumatic tire that rotates while sliding on the rim, the core assembly comprising: a groove formed on an inner circumferential surface; and a lubricant filled between the inner circumferential surface and the outer circumferential surface of a well part of a rim. It is characterized by
本発明においては、中子組立体は通常走行時は内周面と
リムのウェル部の外周面との摩擦によってリムと一体と
なって回転している。バンク等により空気入りタイヤの
内圧が低下すると、空気入りタイヤは接地側において潰
れ、クラウン部内周面が中子組立体の外周面に接触する
ようになる。In the present invention, during normal running, the core assembly rotates integrally with the rim due to friction between the inner circumferential surface and the outer circumferential surface of the well portion of the rim. When the internal pressure of the pneumatic tire decreases due to banking or the like, the pneumatic tire collapses on the ground contact side, and the inner circumferential surface of the crown portion comes into contact with the outer circumferential surface of the core assembly.
この時、中子組立体は空気入りタイヤのクラウン部を内
側から支持してその潰れを阻止し、内圧低下状態におけ
る空気入りタイヤの走行（ランフラット）を可能にする
とともに、空気入りタイヤから与えられた力によりリム
のウェル部外周面上を滑って回転し、空気入りタイヤの
クラウン部内周面と中子組立体の外周面との間の擦れを
防止する。At this time, the core assembly supports the crown part of the pneumatic tire from the inside to prevent it from collapsing, allowing the pneumatic tire to run (runflat) in a state of reduced internal pressure, and also allows the pneumatic tire to run flat. The applied force causes the rim to slide and rotate on the outer circumferential surface of the well portion of the rim, thereby preventing friction between the inner circumferential surface of the crown portion of the pneumatic tire and the outer circumferential surface of the core assembly.
また、この時中子組立体のリムウェル部との接触面には
多大な摩擦が発生する。このため、本発明の中子組立体
は内周面に溝を設け、かつ潤滑剤を中子組立体の内周面
とリムのリムウェル部の外周面との間に充填し、中子組
立体とリムウェル部との摩擦抵抗を少なくすることによ
って、内圧低下後に高荷重下で高速走行しても、中子組
立体のリムウェル部との接触面が摩擦によって破損する
ことなく、比較的長距離の走行ができる。Further, at this time, a large amount of friction occurs on the contact surface of the core assembly with the rim well portion. For this reason, the core assembly of the present invention is provided with a groove on the inner circumferential surface, and a lubricant is filled between the inner circumferential surface of the core assembly and the outer circumferential surface of the rim well portion of the rim. By reducing the frictional resistance between the core assembly and the rim well, the contact surface of the core assembly with the rim well will not be damaged due to friction, even when running at high speed under high loads after the internal pressure has decreased, allowing the core assembly to be used over relatively long distances. Can run.
また、溝は周方向に連続であり、幅方向に閉じていてラ
ンフラット時に潤滑剤がタイヤ内部にこぼれるのを防ぐ
ことが好ましい。また潤滑剤は混和ちょう度が２９５以
下のグーリスが好ましい。Further, it is preferable that the grooves be continuous in the circumferential direction and closed in the width direction to prevent lubricant from spilling into the tire during runflat. Further, the lubricant is preferably Goulis having a worked penetration of 295 or less.
また、潤滑剤の効果の持続性を考えるとスピンドル油や
シリコンオイルは好ましくない。In addition, spindle oil and silicone oil are not preferred when considering the sustainability of the lubricant's effect.
また、最近の空気入りタイヤでは、バンクの確率は低く
、そのため中子組立体が使用される頻度も余り高くない
と言える。そこで、通常内圧での走行時に潤滑剤がタイ
ヤ内部にこぼれたり劣化したすするのを防止するた狛に
、ソート状もしくは袋状のもので潤滑剤を密閉するのが
好ましい。Furthermore, in recent pneumatic tires, the probability of banks is low, so it can be said that the frequency of use of core assemblies is not very high. Therefore, it is preferable to seal the lubricant in a sort-like or bag-like container to prevent the lubricant from spilling inside the tire or sipping when the tire is running under normal internal pressure.
本発明の第１実施例を第１図〜第４図に従って説明する
。A first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
本実施例の中子組立体は、周知の如く少なくとも一部が
弾性材料により構成された２個以上の弧状体の部材によ
り構成されており、各部材の各端部をそれぞれ重ね合わ
せて連結することにより環状に組立られている。As is well known, the core assembly of this embodiment is composed of two or more arc-shaped members at least partially made of an elastic material, and each end of each member is overlapped and connected. Therefore, it is assembled in a ring shape.
第１図に示される如く、中子組立体１００周方向から見
た断面形状は１字状とされており、内周面１０Ａは、空
気入りタイヤ１２のビード部１２Ａが固着されたリム１
４のウェル部１４Ａの外周面に回転可能に嵌合されてい
る。中子組立体１０の外周面１０Ｂは空気入りタイヤ１
２のクラウン部１８の内周面１８Ａのタイヤ幅方向中央
部に対応している。As shown in FIG. 1, the cross-sectional shape of the core assembly 100 when viewed from the circumferential direction is linear, and the inner peripheral surface 10A is connected to the rim 1 to which the bead portion 12A of the pneumatic tire 12 is fixed.
The well portion 14A of No. 4 is rotatably fitted to the outer peripheral surface of the well portion 14A. The outer peripheral surface 10B of the core assembly 10 is the pneumatic tire 1
This corresponds to the center portion in the tire width direction of the inner circumferential surface 18A of the crown portion 18 of No. 2.
第３図及び第４図に示される如く、中子組立体１０の内
周面１０Ａには、周方向に沿って周方向から見た断面形
状がＵ字状とされた周方向溝２０．２２が平行に形成さ
れている。この周方向溝２０．２２の深さ及び幅は、そ
れぞれ２ｍｍとされており、周方向溝２０．２２内には
潤滑剤としてのシリコンオイル２４が充填されている。As shown in FIGS. 3 and 4, the inner peripheral surface 10A of the core assembly 10 has a circumferential groove 20.22 having a U-shaped cross section when viewed from the circumferential direction. are formed in parallel. The depth and width of the circumferential groove 20.22 are each 2 mm, and the circumferential groove 20.22 is filled with silicone oil 24 as a lubricant.
次に本実施例の作用に付いて説明する。Next, the operation of this embodiment will be explained.
本実施例においては、通常走行時中子組立体１０は、内
周面１０Ａとリノ・】４のウェル部１４Δの外周面との
摩擦によってリム１４と一体となって回転している。パ
ンク等により空気入りタイヤ１２の内圧が低下すると、
第２図に示される如く、空気入りタイヤ１２は接地側（
第２図の上側）において潰れ、クラウン部１８の内周面
１８Ａが中子組立体１０の外周面１０Ｂに接触する。In this embodiment, during normal running, the core assembly 10 rotates integrally with the rim 14 due to the friction between the inner circumferential surface 10A and the outer circumferential surface of the well portion 14Δ of the Reno 4. When the internal pressure of the pneumatic tire 12 decreases due to a puncture or the like,
As shown in FIG. 2, the pneumatic tire 12 is placed on the ground contact side (
The inner circumferential surface 18A of the crown portion 18 contacts the outer circumferential surface 10B of the core assembly 10.
この時、中子組立体１０は空気入りタイヤ１２のクラウ
ン部１８を内側から支持してその潰れを阻止し、内圧低
下状態における空気入りタイヤ１２のランフラットを可
能にするとともに、空気入りタイヤ１２から与えられた
力によりリム１４のウェル部１４Ａの外周面上を滑って
回転し、空気入りタイヤ１２のクラウン部１８の内周面
１８Ａと、中子組立体１０の外周面１０Ｂとの間の擦れ
を防止する。At this time, the core assembly 10 supports the crown portion 18 of the pneumatic tire 12 from the inside, prevents it from collapsing, enables the pneumatic tire 12 to run flat in the state of reduced internal pressure, and The rim 14 slides and rotates on the outer circumferential surface of the well portion 14A due to the force applied from Prevent chafing.
また、中子組立体１０の内周面１０Ａの周方向溝２０．
２２に充填されたシリコンオイル２４によって、中子組
立体１０の内周面１０Ａとリム１４のウェル部１４Ａの
外周面との間の摩擦抵抗が少なくなる。このため、内圧
低下後に高荷重下で高速走行しても中子組立体１０のリ
ム１４のウェル部１４Ａとの接触面が摩擦熱によって破
損することなく比較的長距離の走行ができる。Furthermore, the circumferential groove 20 on the inner circumferential surface 10A of the core assembly 10.
The silicone oil 24 filled in 22 reduces the frictional resistance between the inner circumferential surface 10A of the core assembly 10 and the outer circumferential surface of the well portion 14A of the rim 14. Therefore, even if the core assembly 10 is run at high speed under a high load after the internal pressure has decreased, the contact surface of the core assembly 10 with the well portion 14A of the rim 14 is not damaged by frictional heat, and the core assembly 10 can run a relatively long distance.
また、周方向溝２０．２２溝は、幅方向に閉じていてラ
ンフラット時にシリコンオイル２４がタイヤ内部にこぼ
れるのを防止している。Furthermore, the circumferential grooves 20 and 22 are closed in the width direction to prevent the silicone oil 24 from spilling into the tire during runflat.
なお、第１実施例のシリコンオイル２４に代えて、周方
向溝２０．２２溝に潤滑剤としてグリース（混和ちょう
度２６５〜２９５）を充填した中子組立体を第２実施例
とする。The second embodiment is a core assembly in which the circumferential grooves 20 and 22 are filled with grease (worked penetration 265 to 295) as a lubricant instead of the silicone oil 24 of the first embodiment.
次に、本発明の第３実施例に付いて第５図に従って説明
する。Next, a third embodiment of the present invention will be described with reference to FIG.
なお、第１実施例と同一部材に付いては、同一符号を付
して説明を省略する。Incidentally, the same members as in the first embodiment are given the same reference numerals and the description thereof will be omitted.
第５図に示される如く、中子組立体１０の内周面１０Ａ
に形成され、周方向から見た断面形状がＵ字状の周方向
溝２６．２７の深さ及び幅は、それぞれ５ｍとされてお
り、これらの周方向溝２６．２７にはグリース（混和ち
ょう度２６５〜２９５）３６が充填されている。As shown in FIG. 5, the inner peripheral surface 10A of the core assembly 10
The depth and width of the circumferential grooves 26 and 27, which are formed in a U-shaped cross section when viewed from the circumferential direction, are each 5 m, and these circumferential grooves 26 and 27 are filled with grease (mixed butter). degree 265-295) 36 is filled.
次に、本発明の第４実施例に付いて第６図に従って説明
する。Next, a fourth embodiment of the present invention will be described with reference to FIG.
なお、第１実施例と同一部材に付いては、同一符号を付
して説明を省略する。Incidentally, the same members as in the first embodiment are given the same reference numerals and the description thereof will be omitted.
第６図に示される如く、中子組立体１０の内周面１０Ａ
に形成され、周方向から見た断面形状がＵ字状の周方向
溝２８．２９の深さ及び幅は、それぞれ５ｍｍとされて
いる。またこれらの周方向溝２８．２９の間には、周方
向に対して所定角度傾斜し周方向から見た断面形状がＵ
字状とされ、深さ及び幅がそれぞれ５ｍｍの横溝３０が
形成されており、横溝３０によって周方向溝２８と周方
向溝２９とが互いに連結されている。また、これらの周
方向溝２８．２９及び横溝３０にはグリース３６が充填
されている。As shown in FIG. 6, the inner peripheral surface 10A of the core assembly 10
The depth and width of the circumferential grooves 28 and 29, which are formed in the circumferential direction and have a U-shaped cross section when viewed from the circumferential direction, are each 5 mm. Furthermore, between these circumferential grooves 28 and 29, the grooves are inclined at a predetermined angle with respect to the circumferential direction and have a cross-sectional shape of U when viewed from the circumferential direction.
A horizontal groove 30 is formed in the shape of a letter and has a depth and a width of 5 mm, and the circumferential groove 28 and the circumferential groove 29 are connected to each other by the horizontal groove 30. Further, these circumferential grooves 28, 29 and lateral grooves 30 are filled with grease 36.
次に、本発明の第５実施例及び第６実施例に付いて第７
図に従って説明する。Next, regarding the fifth and sixth embodiments of the present invention, the seventh
This will be explained according to the diagram.
なお、第１実施例と同一部材に付いては、同一符号を付
して説明を省略する。Incidentally, the same members as in the first embodiment are given the same reference numerals and the description thereof will be omitted.
第７図に示される如く、中子組立体１０の内周面１０Ａ
に形成され、周方向から見た断面形状がＵ字状の周方向
溝３２．３３の深さ及び幅は、それぞれ５ｍｍとされて
いる。またこれらの周方向溝３２．３３からは幅方向内
側へ向けて、周方向に対して所定角度傾斜し周方向から
見た断面形状がＵ字状とされ、深さ及び幅がそれぞれ５
ｍｍとされた横溝３４．３５が形成されており、これら
の周方向溝３２．３３及び横溝３４．３５にはそれぞれ
グリース３６が充填されている。As shown in FIG. 7, the inner peripheral surface 10A of the core assembly 10
The depth and width of the circumferential grooves 32 and 33, which are formed in the circumferential direction and have a U-shaped cross section when viewed from the circumferential direction, are each 5 mm. Further, these circumferential grooves 32 and 33 are inclined inward in the width direction at a predetermined angle with respect to the circumferential direction, and have a U-shaped cross section when viewed from the circumferential direction, and have a depth and a width of 5.
Transverse grooves 34.35 with a diameter of mm are formed, and these circumferential grooves 32.33 and lateral grooves 34.35 are each filled with grease 36.
次に、本発明の第７実施例に付いて第８図及び第９図に
従って説明する。Next, a seventh embodiment of the present invention will be described with reference to FIGS. 8 and 9.
なお、第１実施例と同一部材に付いては、同一符号を付
して説明を省略する。Incidentally, the same members as in the first embodiment are given the same reference numerals and the description thereof will be omitted.
第８図に示される如く、中子組立体１０の内周面１０Ａ
には、周方向に沿ってシート４０が固着されている。第
９図に示される如く、シート４０の幅方向両端部４ＯＡ
、４０Ｂは、それぞれ中子組立体１０の内周面１０Ａの
幅方向両端部に接着されており、周方向溝２８．２９及
び横溝３０に充填されたグリース３６を密閉している。As shown in FIG. 8, the inner peripheral surface 10A of the core assembly 10
A sheet 40 is fixed along the circumferential direction. As shown in FIG. 9, both ends 4OA in the width direction of the sheet 40
, 40B are bonded to both ends in the width direction of the inner circumferential surface 10A of the core assembly 10, respectively, and seal the grease 36 filled in the circumferential grooves 28, 29 and the lateral grooves 30.
このため、通常内圧での走行時にグリース３６が空気入
りタイヤ内部にこぼれたり劣化したりするのを防止する
ことができる。またランフラット時には、このシート４
０が破れグリース３６によって中子組立体１０の内周面
１０Ａとリム１４のウェル部１４Ａの外周面との間の摩
擦抵抗を少なくできる。For this reason, it is possible to prevent the grease 36 from spilling inside the pneumatic tire or deteriorating when the pneumatic tire runs under normal internal pressure. Also, when running flat, this seat 4
Frictional resistance between the inner circumferential surface 10A of the core assembly 10 and the outer circumferential surface of the well portion 14A of the rim 14 can be reduced by the grease 36.
次に、本発明の第８実施例に付いて第１０図及び第１１
図に従って説明する。Next, regarding the eighth embodiment of the present invention, FIGS.
This will be explained according to the diagram.
なお、第１実施例と同一部材に付いては、同一符号を付
して説明を省略する。Incidentally, the same members as in the first embodiment are given the same reference numerals and the description thereof will be omitted.
第１０図に示される如く、中子組立体１０の内周面１０
Ａの幅方向両端部には、中子組立体１０の周方向に沿っ
て配置された袋４２の幅方向両端部４２Ａ、４２Ｂがそ
れぞれ固着されている。第１１図に示される如く、袋４
２は外周部４３と内周部４４とによって構成されており
、それぞれの幅方向両端部が互い固着されている。これ
らの外周部４３と内周部４４との間には、グリース３６
が密閉されている。As shown in FIG. 10, the inner peripheral surface 10 of the core assembly 10
Both widthwise ends 42A and 42B of a bag 42 arranged along the circumferential direction of the core assembly 10 are fixed to both widthwise ends of A. As shown in FIG.
2 is constituted by an outer circumferential portion 43 and an inner circumferential portion 44, and both ends of each in the width direction are fixed to each other. Grease 36 is provided between the outer circumferential portion 43 and the inner circumferential portion 44.
is sealed.
このため、通常内圧での走行時にグリース３６が空気入
りタイヤ内部にこぼれたり劣化したりするのを防止する
ことができる。またランフラット時には、この袋４２が
破れグリース３６によって中子組立体１０の内周面１０
Ａとリム１４のウェル部１４Ａの外周面との間の摩擦抵
抗を少なくできる。For this reason, it is possible to prevent the grease 36 from spilling inside the pneumatic tire or deteriorating when the pneumatic tire runs under normal internal pressure. Further, during run-flat, this bag 42 is torn and the grease 36 is applied to the inner circumferential surface 10 of the core assembly 10.
Frictional resistance between A and the outer peripheral surface of the well portion 14A of the rim 14 can be reduced.
（実験例１）
空気入りタイヤ（サイズは１９５／７０Ｒ１４であり、
リムのサイズは５．５Ｊ）に、比較例１、比較例２及び
第１実施例〜第５実施例の中子組立体を装着し、−週間
程放置した後、車両に取り付１
２
けて試験した。車両装着位置は前輪左側とした。(Experiment Example 1) Pneumatic tire (size is 195/70R14,
The core assemblies of Comparative Example 1, Comparative Example 2, and 1st to 5th Examples were attached to a rim size of 5.5J), and after being left for about a week, they were installed in a vehicle. It was tested. The vehicle was installed on the left side of the front wheel.
中子組立体をタイヤに組み通常内圧（２，０ｋｇ／ｃｉ
）で速度６０−１００ｋｍ／ｈで５０ｋｍ程度の慣らし
走行を行った後、内圧をＯｋｇ／ｃａｔにして正規荷重
の０．８倍の荷重を作用させながら速度６０ｋｍ／ｈで
一般路を走行させ、タイヤもしくは中子組立体が故障す
るまでの距離を測定した。その結果を第１表に示す。Assemble the core assembly into the tire and apply the normal internal pressure (2.0 kg/ci)
) at a speed of 60-100 km/h for about 50 km, then run on a general road at a speed of 60 km/h while applying a load of 0.8 times the normal load with the internal pressure set to Okg/cat. The distance until the tire or core assembly fails was measured. The results are shown in Table 1.
この結果、本発明を適用した第１実施例〜第５実施例で
は故障までの距離、すなわちランフラット距離が比較例
１及び比較例２より向上している。As a result, in the first to fifth embodiments to which the present invention is applied, the distance to failure, that is, the run-flat distance, is improved compared to Comparative Examples 1 and 2.
また、潤滑剤は混和ちょう度が２９５以下のグーリスが
好ましいく、潤滑剤の効果の持続性を考えるとスピンド
ル油やシリコンオイルは好ましくな第１表ｊ（５）幽１
※潤滑剤の種類 Ａ：シリコンオイルＢニゲリース（
混和ちょう度 ２６５〜２９５）３
（実験例２）
空気入りタイヤ（サイズは１９５／７０Ｒ１４てあり、
リムのサイズは５．５Ｊ）に、第６実施例〜第８実施例
の中子組立体を装着し、中子組立体をリムに組み通常内
圧（２，０ｋｇ／ｃＩｄ＞での走行を１年（２５０００
ｋｍ程度）した後、内圧をＯｋｇ／ｃＩ１１にして正規
荷重の０．８倍の荷重を作用させながら速度６０に…／
ｈで一般路を走行させ、空気入りタイヤもしくは中子組
立体が故障するまでの距離を測定した。この結果を第２
表に示す。In addition, as a lubricant, it is preferable to use goulose with a worked penetration of 295 or less, and considering the sustainability of the lubricant's effect, spindle oil and silicone oil are preferable. : Silicone oil B Nigelise (
Work penetration 265-295) 3 (Experiment example 2) Pneumatic tire (size is 195/70R14,
The core assemblies of Examples 6 to 8 were attached to a rim size of 5.5J), and the core assembly was assembled to the rim to allow running under normal internal pressure (2.0 kg/cId>). Year (25000
km), then set the internal pressure to Okg/cI11 and increase the speed to 60 while applying a load 0.8 times the normal load.../
The vehicle was driven on a public road at 100 mph, and the distance until the pneumatic tire or core assembly failed was measured. This result is the second
Shown in the table.
この結果、グリースを密閉しなかった第６実施例より、
グリースを密閉した第７実施例及び第８実施例は故障ま
での距離、すなわちランフラット第％ｉＬＪ国股又
※潤滑剤の種類 グリース
（ン囮口らよう度 ２６５〜２９５）
なお、中子組立体１０の内周面１０Ａに形成される溝の
周方向に沿った形状は、第１２図（Ａ）〜（Ｄ）に示さ
れるような形状でもよく、また溝の周方向から見た断面
形状は第１３図（Ａ）〜（Ｅ）に示されるような形状で
もよい。As a result, from the sixth embodiment in which the grease was not sealed,
The 7th and 8th examples in which the grease is sealed are based on the distance to failure, that is, the run-flat % iLJ country *Type of lubricant Grease (decoy opening degree 265-295) The shape along the circumferential direction of the groove formed in the inner circumferential surface 10A of the solid body 10 may be the shape shown in FIGS. may have a shape as shown in FIGS. 13(A) to 13(E).
本発明は上記の構成としたので、中子組立体の内周面と
リムのウェル部との接触面の摩擦熱を低５
６
減でき、比較的長距離の走行を可能にできるという優れ
た効果を有する。Since the present invention has the above configuration, it is possible to reduce the frictional heat at the contact surface between the inner circumferential surface of the core assembly and the well portion of the rim to a low level, and it is possible to reduce the frictional heat to a low level, making it possible to travel relatively long distances. have an effect.
第１図は本発明の第１実施例の空気入りタイヤ用中子組
立体が装着された空気入りタイヤを示すタイヤ軸方向に
沿って切断した断面図、第２図は本発明の第１実施例の
空気入りタイヤ用中子組立体が装着された空気入りタイ
ヤのランフラット状態を示すタイヤ軸方向に沿って切断
した断面図、第３図は本発明の第１実施例の空気入りタ
イヤ用中子組立体の一部を示すタイヤ軸方向から見た側
面図、第４図は本発明の第１実施例の空気入りタイヤ用
中子組立体の一部を示す半径方向から見た平面図、第５
図は本発明の第３実施例の空気入りタイヤ用中子組立体
の一部を示す半径方向から見た平面図、第６図は本発明
の第４実施例の空気入りタイヤ用中子組立体の一部を示
す半径方向から見た平面図、第７図は本発明の第５実施
例及び第６実施例の空気入りタイヤ用中子組立体の一部
を示す半径方向から見た平面図、第８図は本発明の第７
実施例の空気入りタイヤ用中子組立体の一部を示すタイ
ヤ軸方向から見た側面図、第９図は第８図ＩＸ−ＩＸ線
断面図、第１０図は本発明の第８実施例の空気入りタイ
ヤ用中子組立体の一部を示すタイヤ軸方向から見た側面
図、第１１図は第１０図ＸＩ−ＸＩ線断面図、第１２図
（Ａ）〜第１２図（Ｄ）は本発明の他の実施例の空気入
りタイヤ用中子組立体の一部を示す半径方向から見た平
面図、第１３図（Ａ）〜第１３図（Ｅ）は本発明の他の
実施例の空気入りタイヤ用中子組立体の溝を示す周方向
から見た断面図である。
１０・・・中子組立体、
１２・・・空気入りタイヤ、
１４・・・リム、
１４Ａ・・・ウェル部、
２０．２２．２６．２７．２８．２９．３２．３３・・
・周方向溝、
２４・・・シリコンオイル、
３０．３４．３５・・・横溝、
３６・・・グリース。
７
８
第
１
図
１０：中千季旦立イ本
１２：空気入りタイヤ
１４：
ノＡ
１４Ａ：ウェル含ｐ
０２２
、周方勾溝
第
図
４
シリコソオイル
第
８
図
第
図
第
０
図
第
１２
図
第
３
図FIG. 1 is a sectional view taken along the tire axial direction showing a pneumatic tire equipped with a pneumatic tire core assembly according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a pneumatic tire core assembly according to a first embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the tire axial direction showing a run-flat state of a pneumatic tire equipped with the pneumatic tire core assembly according to the first embodiment of the present invention. FIG. 4 is a side view of a part of the core assembly as seen from the tire axial direction; FIG. 4 is a plan view of a part of the pneumatic tire core assembly of the first embodiment of the present invention as seen from the radial direction; , 5th
The figure is a plan view of a part of a pneumatic tire core assembly according to a third embodiment of the present invention, viewed from the radial direction, and FIG. 6 is a plan view of a pneumatic tire core assembly according to a fourth embodiment of the present invention. FIG. 7 is a plan view as seen from the radial direction showing a part of the three-dimensional structure, and FIG. Figure 8 shows the seventh embodiment of the present invention.
A side view of a part of a pneumatic tire core assembly according to an embodiment as seen from the tire axial direction, FIG. 9 is a sectional view taken along the line IX-IX in FIG. 8, and FIG. 10 is an eighth embodiment of the present invention. 11 is a sectional view taken along the line XI-XI in FIG. 10, and FIGS. 12(A) to 12(D) 13(A) to 13(E) are plan views showing a part of a pneumatic tire core assembly according to another embodiment of the present invention as viewed from the radial direction, and FIGS. 13(A) to 13(E) show other embodiments of the present invention FIG. 2 is a cross-sectional view of a groove of an example pneumatic tire core assembly viewed from the circumferential direction. 10... Core assembly, 12... Pneumatic tire, 14... Rim, 14A... Well part, 20.22.26.27.28.29.32.33...
- Circumferential groove, 24... Silicone oil, 30.34.35... Lateral groove, 36... Grease. 7 8 1st Figure 10: Nakachikitan standing book 12: Pneumatic tire 14: No A 14A: Well included p 022 Circumferential grooves Figure 4 Silicoso oil Figure 8 Figure 0 Figure 12 Figure 1 3 diagram
Claims (1)
以上の弧状体の各端部を重ね合わせて連結することによ
り環状に組立られるとともに空気入りタイヤを装着した
リムのウェル部外周面に嵌合され空気入りタイヤが内圧
低下により潰れた場合に外周面が空気入りタイヤのクラ
ウン部内周面と接触し内周面がウェル部外周面上を滑っ
て回転する空気入りタイヤ用中子組立体であって、内周
面に形成された溝と、内周面とリムのウェル部外周面と
の間に充填された潤滑剤と、有することを特徴とする空
気入りタイヤ用中子組立体。(1) Two or more arcuate bodies, at least a portion of which is made of an elastic material, are assembled into an annular shape by overlapping and connecting their ends, and are fitted onto the outer circumferential surface of the well of a rim on which a pneumatic tire is mounted. This is a pneumatic tire core assembly whose outer circumferential surface contacts the inner circumferential surface of the crown part of the pneumatic tire, and the inner circumferential surface slides on the outer circumferential surface of the well part and rotates when the pneumatic tire collapses due to a drop in internal pressure. A core assembly for a pneumatic tire, comprising: a groove formed on an inner circumferential surface; and a lubricant filled between the inner circumferential surface and the outer circumferential surface of a well portion of a rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261079A JP2815929B2 (en) | 1989-10-05 | 1989-10-05 | Core assembly for pneumatic tires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261079A JP2815929B2 (en) | 1989-10-05 | 1989-10-05 | Core assembly for pneumatic tires |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03121913A true JPH03121913A (en) | 1991-05-23 |
| JP2815929B2 JP2815929B2 (en) | 1998-10-27 |
Family
ID=17356790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1261079A Expired - Fee Related JP2815929B2 (en) | 1989-10-05 | 1989-10-05 | Core assembly for pneumatic tires |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2815929B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194104A (en) * | 1990-07-23 | 1993-03-16 | Bridgestone Corporation | Core assembly for pneumatic tire |
| WO2003099591A1 (en) * | 2002-05-28 | 2003-12-04 | Topy Kogyo Kabushiki Kaisha | Run-flat core |
| US7587933B2 (en) | 2004-03-01 | 2009-09-15 | Bridgestone Corporation | Process for repairing punctured pneumatic tire in tire-rim assembly and repairing system |
| JP2010285104A (en) * | 2009-06-12 | 2010-12-24 | Sumitomo Rubber Ind Ltd | Run flat tire assembly and support ring used for the same |
| CN105034711A (en) * | 2015-08-20 | 2015-11-11 | 资义勇 | Tire burst protective ring for tubeless tire |
-
1989
- 1989-10-05 JP JP1261079A patent/JP2815929B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194104A (en) * | 1990-07-23 | 1993-03-16 | Bridgestone Corporation | Core assembly for pneumatic tire |
| WO2003099591A1 (en) * | 2002-05-28 | 2003-12-04 | Topy Kogyo Kabushiki Kaisha | Run-flat core |
| US7587933B2 (en) | 2004-03-01 | 2009-09-15 | Bridgestone Corporation | Process for repairing punctured pneumatic tire in tire-rim assembly and repairing system |
| JP2010285104A (en) * | 2009-06-12 | 2010-12-24 | Sumitomo Rubber Ind Ltd | Run flat tire assembly and support ring used for the same |
| CN105034711A (en) * | 2015-08-20 | 2015-11-11 | 资义勇 | Tire burst protective ring for tubeless tire |
| CN105034711B (en) * | 2015-08-20 | 2017-02-22 | 资义勇 | Tire burst protective ring for tubeless tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2815929B2 (en) | 1998-10-27 |
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