JPH05155210A - Wheel for twin tire - Google Patents
Wheel for twin tireInfo
- Publication number
- JPH05155210A JPH05155210A JP3317853A JP31785391A JPH05155210A JP H05155210 A JPH05155210 A JP H05155210A JP 3317853 A JP3317853 A JP 3317853A JP 31785391 A JP31785391 A JP 31785391A JP H05155210 A JPH05155210 A JP H05155210A
- Authority
- JP
- Japan
- Prior art keywords
- wheel
- tire
- pneumatic radial
- hole
- valve body
- 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
Landscapes
- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は外径の等しい２本の空気
入りラジアルタイヤを装着しうるツインタイヤ用ホイー
ルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel for twin tires on which two pneumatic radial tires having the same outer diameter can be mounted.
【０００２】[0002]
【従来の技術】最近の車両の高性能化に伴い、タイヤへ
の要求性能のうち特に、重要なものは、高速耐久性、振
動乗り心地性、操縦安定性に加え、安全性としてパンク
等の緊急時のランフラット性向上がある。2. Description of the Related Art With the recent increase in performance of vehicles, particularly important performance requirements for tires include high-speed durability, vibration riding comfort, steering stability, and safety such as puncture. Improved run flatness in an emergency.
【０００３】従来、このランフラット性向上について
は、高粘性体を充填したタイヤ、サイド部を補強したタ
イヤ、特殊リム形状を採用したタイヤ等の公知技術があ
る。また、近年のタイヤ偏平化の動きにつれて、上記各
性能とタイヤ偏平化との両立のため、ツインタイヤがク
ローズアップされてきている。Conventionally, for improving the run-flat property, there are known techniques such as a tire filled with a highly viscous material, a tire having a reinforced side portion, and a tire having a special rim shape. In addition, with the recent trend toward flattening of tires, twin tires have been focused on in order to achieve both the above performance and flattening of tires.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このツ
インタイヤは２つの独立したタイヤが共通の一つのホイ
ールに組み込まれた構造となっている。従って、ランフ
ラット性やウエット路面でのハイドロプレーニング性の
改良効果はあるものの、２つの独立したタイヤの内圧差
によって、各接地圧が異なるため、偏摩耗性及び直進安
定性が低下するという不具合がある。However, this twin tire has a structure in which two independent tires are incorporated into one common wheel. Therefore, although there is an effect of improving the run flatness and the hydroplaning performance on the wet road surface, since the ground contact pressures are different due to the internal pressure difference between the two independent tires, the uneven wear resistance and the straight running stability are deteriorated. is there.
【０００５】なお、２つの独立したタイヤの空気充填部
を連通路によって連結し、この連通路に、ランフラット
時にはこの連通路を遮断してランフラット性能の低下を
防止するとともに、通常時にはこの連通路を開通させて
２つの独立したタイヤの内圧差を無くし、ツインタイヤ
の偏摩耗性及び直進安定性を向上するための空気弁を設
ける技術が特公昭５１−１８８６号公報に示されている
が、このタイヤの空気弁は構造が複雑であり、コストが
高い等の不具合がある。In addition, two independent tire air-filled portions are connected by a communication passage, and the communication passage is blocked during run-flat to prevent the run-flat performance from deteriorating. Japanese Patent Publication No. 51-1886 discloses a technique of providing an air valve for opening a passage so as to eliminate the internal pressure difference between two independent tires and improve the uneven wear and straight running stability of twin tires. However, the pneumatic valve of this tire has a complicated structure and is disadvantageous in that the cost is high.
【０００６】本発明は上記事実を考慮し、簡単な構造
で、且つランフラット性能を低下させるこなく、ツイン
タイヤの偏摩耗性及び直進安定性を向上することができ
るツインタイヤ用ホイールを得ることが目的である。In view of the above facts, the present invention provides a twin tire wheel having a simple structure and capable of improving uneven wear resistance and straight running stability of the twin tire without deteriorating the run flat performance. Is the purpose.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載の発明の
ツインタイヤ用ホイールは、実質的に外径の等しい２本
の空気入りラジアルタイヤを装着しうる１個のツインタ
イヤ用ホイールにおいて、リムフランジ部の背面が互い
に対向するように連結されるとともに両リムの対向する
井戸部側壁の内側に板厚部が設けられた２つのホイール
部と、これらの２つのホイール部の前記井戸部側壁と前
記板厚部とをそれぞれタイヤ軸方向へ連通する貫通孔
と、この貫通孔と連結され前記板厚部にタイヤ半径方向
側へ向けて設けられ前記空気入りラジアルタイヤの空気
充填部に連通された縦孔部と、前記２つのホイール部の
前記貫通孔を互いに連結する空気導管と、前記２つのホ
イール部の前記縦孔部にそれぞれ設けられ前記２本の空
気入りラジアルタイヤの内圧差が所定値より小さい場合
に前記縦孔部の双方を連通状態とし前記２本の空気入り
ラジアルタイヤの内圧差が所定値より大きい場合に前記
縦孔部の一方を閉じる一対の弁装置と、を備え、前記一
対の弁装置は２本の空気入りラジアルタイヤの内圧差に
よって発生する気流によって前記縦孔部内を移動する弁
体と、この弁体の前記貫通孔側への移動を制限し前記縦
孔部を開状態とする位置に保持する弁体支持手段と、前
記弁体の前記２本の空気入りラジアルタイヤの空気充填
部側への移動によって閉塞される小径部と、から成るこ
とを特徴としている。A twin tire wheel according to claim 1 is one twin tire wheel to which two pneumatic radial tires having substantially the same outer diameter can be mounted. Two wheel portions in which the back surfaces of the rim flange portions are connected so as to face each other and a plate thickness portion is provided inside the opposing well portion side walls of both rims, and the well portion side walls of these two wheel portions And a through hole that respectively communicates the plate thickness portion in the tire axial direction, and is connected to the through hole and is provided in the plate thickness portion toward the tire radial direction side and communicates with an air filled portion of the pneumatic radial tire. Vertical hole portion, an air conduit connecting the through holes of the two wheel portions to each other, and the two pneumatic radial ties respectively provided in the vertical hole portions of the two wheel portions. When the internal pressure difference between the two pneumatic radial tires is in a communication state when the internal pressure difference between the two pneumatic radial tires is smaller than a predetermined value, a pair of valve devices that closes one of the vertical hole portions when the internal pressure difference between the two pneumatic radial tires is larger than the predetermined value. And a valve body that moves in the vertical hole portion by an air flow generated by an internal pressure difference between two pneumatic radial tires, and a movement of the valve body to the through hole side. The valve body support means for holding the vertical hole portion in the open position, and the small diameter portion closed by the movement of the two valve radial tires toward the air filling portion side. It is characterized by
【０００８】[0008]
【作用】請求項１に記載の発明のツインタイヤ用ホイー
ルを装着した車両が静止状態にあり、一対の弁装置がツ
インタイヤ用ホイールの上部近傍にある場合には、弁体
は重力によって下方、即ち、貫通孔側へ移動するが、弁
体支持手段によって貫通孔側への移動が制限され縦孔部
を開状態とする位置に保持される。また、この状態で２
つの空気入りラジアルタイヤに内圧差が発生すると、内
圧が大きい側の弁装置では、空気入りラジアルタイヤの
空気充填部側から縦孔部へ流れる気流によって、弁体は
貫通孔側へ移動し、弁体支持手段に当接して縦孔部を開
状態とする位置に保持される。一方、内圧が小さい側の
弁装置では、貫通孔から縦孔部へ流れる気流によって、
弁体は空気入りラジアルタイヤの空気充填部側へ移動
し、２つの空気入りラジアルタイヤの内圧差が所定値よ
り大きい場合には、小径部を完全に閉塞する。また、２
つの空気入りラジアルタイヤの内圧差が所定値より小さ
い場合には、小径部は閉塞されない。When the vehicle equipped with the twin tire wheel according to the first aspect of the invention is stationary and the pair of valve devices are near the upper portion of the twin tire wheel, the valve body is lowered by gravity, That is, although it moves to the side of the through hole, the valve body supporting means restricts the movement to the side of the through hole and holds the vertical hole at a position where it is in an open state. Also, in this state 2
When an internal pressure difference occurs between two pneumatic radial tires, in the valve device with the higher internal pressure, the valve body moves to the through-hole side due to the air flow flowing from the air-filled part side of the pneumatic radial tire to the vertical hole part. It is held in a position where it abuts on the body support means and opens the vertical hole portion. On the other hand, in the valve device on the side where the internal pressure is small, due to the air flow flowing from the through hole to the vertical hole,
The valve body moves to the air filling portion side of the pneumatic radial tire, and completely closes the small diameter portion when the internal pressure difference between the two pneumatic radial tires is larger than a predetermined value. Also, 2
When the internal pressure difference between the two pneumatic radial tires is smaller than the predetermined value, the small diameter portion is not closed.
【０００９】また、請求項１に記載の発明のツインタイ
ヤ用ホイールを装着した車両が走行した場合には、遠心
力及び重力によって、弁体が小径部を塞ぐ方向へ移動す
ることがあるが、タイヤの振動等によって、弁体が小径
部を塞いだ状態が連続することは無い。このため、この
場合にも、２つの空気入りラジアルタイヤの空気充填部
内の気体は、縦孔部と貫通孔と空気導管と弁装置を介し
て内圧の高い方から内圧の低い方へ除々に移動する。When the vehicle equipped with the twin tire wheel of the present invention travels, the valve element may move in the direction of closing the small diameter portion due to centrifugal force and gravity. The valve body does not continuously block the small diameter portion due to tire vibration or the like. Therefore, also in this case, the gas in the air filled portions of the two pneumatic radial tires gradually moves from the higher internal pressure to the lower internal pressure via the vertical hole portion, the through hole, the air conduit and the valve device. To do.
【００１０】従って、簡単な構造で２つの空気入りラジ
アルタイヤの内圧の差を低減することができ、これによ
って、２つの空気入りラジアルタイヤの偏摩耗性及び直
進安定性を向上することができる。Therefore, it is possible to reduce the difference in internal pressure between the two pneumatic radial tires with a simple structure, thereby improving the uneven wear resistance and straight running stability of the two pneumatic radial tires.
【００１１】また、２本の空気入りラジアルタイヤの内
の一方がパンクして、２本の空気入りラジアルタイヤの
内圧差が所定値より大きくなった場合には、パンクした
タイヤ側の弁体は、２本の空気入りラジアルタイヤの内
圧差によって発生する貫通孔から縦孔部へ流れる気流に
よって、縦孔部内を空気入りラジアルタイヤの空気充填
部側へ移動して小径部を完全に塞ぐ。Further, when one of the two pneumatic radial tires is flat and the internal pressure difference between the two pneumatic radial tires is larger than a predetermined value, the valve element on the flat tire side is The air current flowing from the through hole to the vertical hole portion due to the internal pressure difference between the two pneumatic radial tires moves the inside of the vertical hole portion to the air filling portion side of the pneumatic radial tire to completely close the small diameter portion.
【００１２】従って、パンクしていない空気入りラジア
ルタイヤの内圧が低下するのを防止することができるた
め、ランフラット性能の低下を防止することができる。Therefore, since it is possible to prevent the internal pressure of the punctured pneumatic radial tire from decreasing, it is possible to prevent the deterioration of the run flat performance.
【００１３】[0013]
【実施例】本発明のツインタイヤ用ホイールの一実施例
を図１及び図２に従って説明する。EXAMPLE An example of a twin tire wheel of the present invention will be described with reference to FIGS.
【００１４】図１に示される如く、本実施例のツインタ
イヤ用ホイール１０は、実質的に外径の等しい２本の空
気入りラジアルタイヤ１２、１４が装着可能とされてい
る。このツインタイヤ用ホイール１０は、リムフランジ
部１６、１８の背面１６Ａ、１８Ａが互いに対向するよ
うに、第１のホイール部１０Ａと第２のホイール１０Ｂ
とが、ツインタイヤ用ホイール１０の軸２０と同軸的に
配置された円筒状の連結部１０Ｃによって連結されてい
る。As shown in FIG. 1, the twin tire wheel 10 of this embodiment can be fitted with two pneumatic radial tires 12 and 14 having substantially the same outer diameter. The twin tire wheel 10 includes a first wheel portion 10A and a second wheel 10B so that the rear surfaces 16A and 18A of the rim flange portions 16 and 18 face each other.
Are connected by a cylindrical connecting portion 10C arranged coaxially with the shaft 20 of the twin tire wheel 10.
【００１５】また、第１のホイール部１０Ａのリムの井
戸部２２においては、第２のホイール１０Ｂ側の側壁３
０の内側に板厚部２４が設けられている。また、第２の
ホイール部１０Ｂのリムの井戸部２６においては、第１
のホイール１０Ａ側の側壁３４の内側に板厚部２８が設
けられている。第１のホイール部１０Ａの側壁３０と板
厚部２４とには、これらを軸２０の方向へ連通する貫通
孔３２が穿設されており、第２のホイール部１０Ｂの側
壁３４と板厚部２８とには、これらを軸２０の方向へ連
通する貫通孔３６が穿設されている。In the well portion 22 of the rim of the first wheel portion 10A, the side wall 3 on the second wheel 10B side is provided.
A plate thickness portion 24 is provided inside 0. In the well portion 26 of the rim of the second wheel portion 10B, the first
The thick plate portion 28 is provided inside the side wall 34 on the side of the wheel 10A. A through hole 32 is formed in the side wall 30 of the first wheel portion 10A and the plate thickness portion 24 so as to communicate them in the direction of the shaft 20, and the side wall 34 and the plate thickness portion of the second wheel portion 10B are formed. A through hole 36 is formed in the shaft 28 so that they communicate with each other in the direction of the shaft 20.
【００１６】第１のホイール部１０Ａの板厚部２４に
は、タイヤ半径方向へ向けて空気入りラジアルタイヤ１
２の空気充填部１２Ａと連通した縦孔部３８が設けられ
ており、この縦孔部３８は貫通孔３２と連結されてい
る。また、第２のホイール部１０Ｂの板厚部２８にも、
タイヤ半径方向へ向けて空気入りラジアルタイヤ１４の
空気充填部１４Ａと連通した縦孔部４０が設けられてお
り、この縦孔部４０は貫通孔３６と連結されている。第
１のホイール部１０Ａの貫通孔３２と第２のホイール部
１０Ｂの貫通孔３６とは、連結部１０Ｃの一部に形成さ
れた空気導管４２によって互いに連結されている。In the plate thickness portion 24 of the first wheel portion 10A, the pneumatic radial tire 1 extends in the tire radial direction.
A vertical hole portion 38 that communicates with the second air filling portion 12A is provided, and the vertical hole portion 38 is connected to the through hole 32. Also, in the plate thickness portion 28 of the second wheel portion 10B,
A vertical hole portion 40 communicating with the air filling portion 14A of the pneumatic radial tire 14 is provided in the tire radial direction, and the vertical hole portion 40 is connected to the through hole 36. The through hole 32 of the first wheel portion 10A and the through hole 36 of the second wheel portion 10B are connected to each other by an air conduit 42 formed in a part of the connecting portion 10C.
【００１７】従って、２本の空気入りラジアルタイヤ１
２、１４の空気充填部１２Ａ、１４Ａは互いに連通状態
とされている。Therefore, two pneumatic radial tires 1
The 2 and 14 air-filled portions 12A and 14A are in communication with each other.
【００１８】第１のホイール部１０Ａの縦孔部３８と第
２のホイール部１０Ｂの縦孔部４０には、一対の弁装置
４５が設けられており、２本の空気入りラジアルタイヤ
１２、１４の内圧差が所定値より小さい場合には、縦孔
部３８、４０の双方を連通状態とし、２本の空気入りラ
ジアルタイヤ１２、１４の内圧差が所定値より大きい場
合には、縦孔部３８、４０の一方を閉じるようになって
いる。A pair of valve devices 45 are provided in the vertical hole portion 38 of the first wheel portion 10A and the vertical hole portion 40 of the second wheel portion 10B, and the two pneumatic radial tires 12, 14 are provided. If the internal pressure difference between the two pneumatic radial tires 12, 14 is greater than the predetermined value, the vertical holes 38, 40 are in communication with each other. One of 38 and 40 is closed.
【００１９】次に、弁装置４５について図２〜第４図に
従って詳細に説明する。なお、第１のホイール部１０Ａ
の縦孔部３８の弁装置４５と同一構造である第２のホイ
ール部１０Ｂの縦孔部４０の弁装置４５の説明は省略す
る。Next, the valve device 45 will be described in detail with reference to FIGS. The first wheel portion 10A
The description of the valve device 45 of the vertical hole portion 40 of the second wheel portion 10B having the same structure as the valve device 45 of the vertical hole portion 38 of FIG.
【００２０】図２に示される如く、第１のホイール部１
０Ａの板厚部２４の縦孔部３８の貫通孔３２との連結部
の空気入りラジアルタイヤ１２の空気充填部１２Ａ側
（図２の上側）近傍には、略球状の大径部３８Ａが形成
されている。この大径部３８Ａ内には、弁装置４５の一
部を構成する弁体４４が移動可能に挿入されている。こ
の弁体４４は、大径部３８Ａの内周面に沿った略球状と
されており、貫通孔３２との連結部側（図２の下側）に
は、球面状の凹部４４Ａが形成されている。この凹部４
４Ａは、縦孔部３８の底部３８Ｂに立設された弁体支持
手段としての弁体支持部４６の球面状の頭部４６Ａに当
接するようになっており、弁体４４が弁体支持部４６の
頭部４６Ａに当接した状態では、弁体４４と縦孔部３８
の大径部３８Ａとの間に、空気が流通する隙間が形成さ
れるようになっている。As shown in FIG. 2, the first wheel portion 1
A substantially spherical large-diameter portion 38A is formed in the vicinity of the air-filled portion 12A side (upper side in FIG. 2) of the pneumatic radial tire 12 at the connecting portion with the through hole 32 of the vertical hole portion 38 of the plate thickness portion 24 of 0A. Has been done. A valve element 44 forming a part of the valve device 45 is movably inserted into the large diameter portion 38A. The valve body 44 is formed into a substantially spherical shape along the inner peripheral surface of the large diameter portion 38A, and a spherical concave portion 44A is formed on the side of the connecting portion with the through hole 32 (lower side in FIG. 2). ing. This recess 4
4A is adapted to abut on a spherical head portion 46A of a valve body support portion 46 as a valve body support means which is erected on the bottom portion 38B of the vertical hole portion 38, and the valve body 44 is a valve body support portion. The valve body 44 and the vertical hole portion 38 are in contact with the head portion 46A of the valve body 46.
A gap through which air flows is formed between the large diameter portion 38A and the large diameter portion 38A.
【００２１】また、図３に示される如く、弁体支持部４
６の頭部４６Ａの最大外径部４６Ｂと、縦孔部３８の大
径部３８Ａの弁体支持部４６側端部３８Ｃとは接近して
おり、これらの隙間４７を貫通孔３２側から縦孔部３８
へ通過する気流（図３の矢印Ｆ）によって弁体４４は、
タイヤ半径方向外側（図３の矢印Ａ方向）、即ち、空気
入りラジアルタイヤ１２の空気充填部１２Ａ側へ移動す
るようになっている。また、縦孔部３８の大径部３８Ａ
の空気充填部１２Ａ側は小径部３８Ｄとされており、こ
の小径部３８Ｄは弁体４４によって閉塞されるようにな
っている。Further, as shown in FIG. 3, the valve body support portion 4
The maximum outer diameter portion 46B of the head portion 46A of 6 and the end portion 38C of the large diameter portion 38A of the vertical hole portion 38 on the side of the valve element support portion 46 are close to each other, and the gap 47 between them is lengthened from the through hole 32 side. Hole 38
Due to the air flow passing through to the valve body 44 (arrow F in FIG. 3),
The tire is moved to the outside in the radial direction of the tire (direction of arrow A in FIG. 3), that is, to the air filling portion 12A side of the pneumatic radial tire 12. Also, the large diameter portion 38A of the vertical hole portion 38
A small diameter portion 38D is formed on the side of the air-filled portion 12A, and the small diameter portion 38D is closed by the valve element 44.
【００２２】次に、本実施例の作用について説明する。
本実施例のツインタイヤ用ホイール１０を装着した車両
が静止状態にあり、一対の弁装置４５がツインタイヤ用
ホイール１０の上部近傍にある場合には、弁体４４は重
力によって下方、即ち、貫通孔３２、３６側へ移動する
が、弁体支持４６によって貫通孔３２、３６側への移動
が制限され縦孔部３８、４０をそれぞれ開状態とする位
置に保持される。また、この状態で２つの空気入りラジ
アルタイヤ１２、１４に内圧差が発生すると、内圧が大
きい側の弁装置４５では、空気入りラジアルタイヤ１
２、１４の空気充填部１２Ａ、１４Ａ側から縦孔部３
８、４０へ流れる気流によって、弁体４４は貫通孔３
２、３６側へ移動し、弁体支持部４６に当接して縦孔部
３８、４０を開状態とする位置（図２の位置）に保持さ
れる。Next, the operation of this embodiment will be described.
When the vehicle equipped with the twin tire wheel 10 of the present embodiment is in a stationary state and the pair of valve devices 45 are near the upper portion of the twin tire wheel 10, the valve element 44 is lowered by gravity, that is, penetrates. Although it moves to the holes 32 and 36 side, the valve body support 46 restricts the movement to the through holes 32 and 36 side and holds the vertical hole portions 38 and 40 in the open position. Further, when an internal pressure difference occurs between the two pneumatic radial tires 12 and 14 in this state, in the valve device 45 on the side where the internal pressure is high, the pneumatic radial tire 1
Vertical holes 3 from the air filling portions 12A and 14A side of 2 and 14
Due to the airflow flowing to the valve bodies 8 and 40, the valve body 44 moves through the through hole 3
It moves to the 2 and 36 side, contacts the valve body supporting portion 46, and is held at the position (the position in FIG. 2) that opens the vertical hole portions 38 and 40.
【００２３】一方、内圧が小さい空気入りラジアルタイ
ヤ側の弁装置４５では、貫通孔３２、３６から縦孔部３
８、４０へ流れる気流によって、弁体４４は空気入りラ
ジアルタイヤ１２、１４の空気充填部１２Ａ、１４Ａ側
へ移動し、２つの空気入りラジアルタイヤ１２、１４の
内圧差が所定値より大きい場合には、小径部３８Ｄを完
全に閉塞する（図３の状態）。また、２つの空気入りラ
ジアルタイヤ１２、１４の内圧差が所定値より小さい場
合には、小径部３８Ｄは閉塞されない（図４の状態）。On the other hand, in the valve device 45 on the pneumatic radial tire side having a small internal pressure, the vertical hole portion 3 is formed from the through holes 32 and 36.
The valve body 44 moves toward the air-filled portions 12A and 14A of the pneumatic radial tires 12 and 14 by the airflows flowing to 8 and 40, and when the internal pressure difference between the two pneumatic radial tires 12 and 14 is larger than a predetermined value. Completely closes the small diameter portion 38D (state in FIG. 3). Further, when the internal pressure difference between the two pneumatic radial tires 12 and 14 is smaller than the predetermined value, the small diameter portion 38D is not closed (state in FIG. 4).
【００２４】また、本実施例のツインタイヤ用ホイール
１０を装着した車両が走行した場合には、遠心力及び重
力によって、弁体４４が小径部３８Ｄを塞ぐ方向へ移動
することがあるが、タイヤの振動等によって、弁体４４
が小径部３８Ｄを塞いだ状態が連続することは無い。こ
のため、この場合にも、２つの空気入りラジアルタイヤ
１２、１４の空気充填部１２Ａ、１４Ａ内の気体は、縦
孔部３８、４０と貫通孔３２、３６と空気導管４２と弁
装置４５を介して内圧の高い方から内圧の低い方へ除々
に移動する。When the vehicle equipped with the twin tire wheel 10 of the present embodiment travels, the valve element 44 may move in the direction of closing the small diameter portion 38D due to centrifugal force and gravity. The vibration of the valve element 44
Does not continue to block the small diameter portion 38D. Therefore, also in this case, the gas in the air filling portions 12A and 14A of the two pneumatic radial tires 12 and 14 passes through the vertical hole portions 38 and 40, the through holes 32 and 36, the air conduit 42, and the valve device 45. Through it, it gradually moves from the higher internal pressure to the lower internal pressure.
【００２５】従って、簡単な構造で２つの空気入りラジ
アルタイヤ１２、１４の内圧の差を低減することがで
き、これによって、２つの空気入りラジアルタイヤ１
２、１４の偏摩耗性及び直進安定性を向上することがで
きる。Therefore, the difference in internal pressure between the two pneumatic radial tires 12 and 14 can be reduced with a simple structure, whereby the two pneumatic radial tires 1 are
The uneven wear resistance of Nos. 2 and 14 and the straight running stability can be improved.
【００２６】また、２本の空気入りラジアルタイヤ１
２、１４の内の一方がパンクして、２本の空気入りラジ
アルタイヤ１２、１４の内圧差が所定値より大きくなっ
た場合には、パンクしたタイヤ側の弁体４４は、２本の
空気入りラジアルタイヤ１２、１４の内圧差によって発
生する貫通孔３２、３６から縦孔部３８、４０へ流れる
気流によって、縦孔部３８、４０内を空気入りラジアル
タイヤ１２、１４の空気充填部１２Ａ、１４Ａ側（図３
の矢印Ａ方向）へ移動して小径部３８Ｄを完全に塞ぐ。Also, two pneumatic radial tires 1
When one of the tires 2 and 14 is punctured and the internal pressure difference between the two pneumatic radial tires 12 and 14 becomes larger than a predetermined value, the punctured tire-side valve element 44 is replaced with two pneumatic tires. The air filled portion 12A of the pneumatic radial tires 12, 14 inside the vertical hole portions 38, 40 by the air flow flowing from the through holes 32, 36 to the vertical hole portions 38, 40 generated by the internal pressure difference of the filled radial tires 12, 14. 14A side (Fig. 3
In the direction of arrow A) to completely close the small diameter portion 38D.
【００２７】従って、パンクしていない空気入りラジア
ルタイヤの内圧が低下するのを防止することができるた
め、ランフラット性能の低下を防止することができる。Therefore, since it is possible to prevent the internal pressure of the pneumatic tire not punctured from decreasing, it is possible to prevent the deterioration of the run flat performance.
【００２８】なお、上記実施例では、空気導管４２を連
結部１０Ｃの一部に形成したが、これに代えて、空気導
管を連結部１０Ｃと別部材とされたパイプ材等で構成し
ても良い。また、上記実施例では、ツインタイヤ用ホイ
ール１０に縦孔部３８、４０と貫通孔３２、３６と空気
導管４２と弁装置４５とを一組設けたが、これらをホイ
ールの周方向に沿って複数組み設けても良い。In the above embodiment, the air conduit 42 is formed in a part of the connecting portion 10C, but instead of this, the air conduit 42 may be formed of a pipe material or the like which is a separate member from the connecting portion 10C. good. In the above embodiment, the twin tire wheel 10 is provided with the vertical hole portions 38, 40, the through holes 32, 36, the air conduit 42, and the valve device 45 as one set, but these are arranged along the circumferential direction of the wheel. Multiple sets may be provided.
【００２９】また、図４に示される如く、縦孔部３８の
小径部３８Ｄにオーリング５０を設け、パンク発生時の
空気漏れをさらに少なくする構成としても良い。 （試験例）外径の等しい２本の空気入りラジアルタイヤ
（タイヤサイズ１３５／８０Ｒ１４）を、図１に示され
る本実施例のツインタイヤ用ホイール１０と、弁装置を
持たない従来例のツインタイヤ用ホイールに、それぞれ
組付け表１に示す各種評価試験を実施し、その結果を表
１に示した。Further, as shown in FIG. 4, an O-ring 50 may be provided on the small diameter portion 38D of the vertical hole portion 38 to further reduce air leakage when a puncture occurs. (Test Example) Two pneumatic radial tires (tire size 135 / 80R14) having the same outer diameter were used, the twin tire wheel 10 of the present embodiment shown in FIG. 1 and a twin tire of a conventional example having no valve device. The various evaluation tests shown in Table 1 were carried out on the wheels and the results are shown in Table 1.
【００３０】なお、タイヤの規定内圧はいずれも１．９
kgf ／cm2 であり、試験車両は２０００ccクラスの乗用
車とした。また、評価結果は、従来例タイヤの評価試験
結果１００とし、１００以上が良く、１００未満が悪い
ことを示している。The specified tire internal pressure is 1.9 in all cases.
It was kgf / cm 2 , and the test vehicle was a 2000cc class passenger car. Further, the evaluation result is set to 100 in the evaluation test result of the conventional tire, and 100 or more is good, and less than 100 is bad.
【００３１】[0031]
【表１】 [Table 1]
【００３２】表１から本実施例のツインタイヤ用ホイー
ル１０を使用することによって、ツインタイヤの弱点で
ある偏摩耗性及び直進安定性が他性能、特にランフラッ
ト性を犠牲にしないで改善されていることが認められ
る。From Table 1, by using the twin tire wheel 10 of the present embodiment, the uneven wear resistance and straight running stability, which are the weak points of the twin tire, are improved without sacrificing other performances, especially run flatness. It is recognized that
【００３３】[0033]
【発明の効果】本発明は、２本の空気入りラジアルタイ
ヤの内圧差によって発生する気流によって縦孔部内を移
動する弁体と、この弁体の貫通孔側への移動を制限し縦
孔部を開状態とする位置に保持する弁体支持手段と、弁
体の空気入りラジアルタイヤの空気充填部側への移動に
よって閉塞される小径部と、から成る一対の弁装置によ
って、２本の空気入りラジアルタイヤの内圧差を無くす
と共に、パンク時に２本の空気入りラジアルタイヤの空
気充填部の連通を遮断する構成としたので、簡単な構造
で、且つランフラット性能を低下させるこなく、ツイン
タイヤの偏摩耗性及び直進安定性を向上することができ
るという優れた効果を有する。According to the present invention, the valve body which moves in the vertical hole portion by the air flow generated by the internal pressure difference between the two pneumatic radial tires and the vertical hole portion which restricts the movement of the valve body toward the through hole side. Of the valve body supporting means for holding the valve body in the open position and a small diameter portion closed by the movement of the valve body toward the air-filled portion of the pneumatic radial tire. Twin tires have a simple structure and do not reduce run-flat performance because the internal pressure difference of the filled radial tires is eliminated and the communication between the air filled parts of the two pneumatic radial tires is cut off at the time of puncture. It has an excellent effect that the uneven wear property and the straight running stability can be improved.
【図１】本発明の一実施例のツインタイヤ用ホイールの
上半分を示すタイヤ軸方向に沿った要部断面図である。FIG. 1 is a cross-sectional view of essential parts along the tire axial direction showing an upper half of a twin tire wheel according to an embodiment of the present invention.
【図２】本発明の一実施例のツインタイヤ用ホイールの
弁装置を示すタイヤ軸方向に沿った断面図である。FIG. 2 is a cross-sectional view taken along the tire axial direction showing a valve device for a twin tire wheel according to an embodiment of the present invention.
【図３】本発明の一実施例のツインタイヤ用ホイールの
弁装置を示すタイヤ軸方向に沿った断面図である。FIG. 3 is a cross-sectional view taken along the tire axial direction showing a valve device for a twin tire wheel according to an embodiment of the present invention.
【図４】本発明の一実施例のツインタイヤ用ホイールの
弁装置を示すタイヤ軸方向に沿った断面図である。FIG. 4 is a sectional view taken along the tire axial direction showing a valve device for a twin tire wheel according to an embodiment of the present invention.
１０ ツインタイヤ用ホイール １０Ａ 第１のホイール部 １０Ｂ 第２のホイール部 １０Ｃ 連結部 １２ 空気入りラジアルタイヤ １４ 空気入りラジアルタイヤ １２Ａ 空気充填部 １４Ａ 空気充填部 １６ リムフランジ部 １６Ａ 背面 １８ リムフランジ部 １８Ａ 背面 ２２ 井戸部 ２４ 板厚部 ２６ 井戸部 ２８ 板厚部 ３０ 側壁 ３２ 貫通孔 ３４ 側壁 ３６ 貫通孔 ３８ 縦孔部 ３８Ｄ 小径部 ４０ 縦孔部 ４２ 空気導管 ４４ 弁体 ４６ 弁体支持部（弁体支持手段） 10 Wheels for Twin Tires 10A First Wheel Part 10B Second Wheel Part 10C Connecting Part 12 Pneumatic Radial Tire 14 Pneumatic Radial Tire 12A Air Filling Part 14A Air Filling Part 16 Rim Flange Part 16A Rear Surface 18 Rim Flange Part 18A Rear Surface 22 Well part 24 Plate thickness part 26 Well part 28 Plate thickness part 30 Side wall 32 Through hole 34 Side wall 36 Through hole 38 Vertical hole part 38D Small diameter part 40 Vertical hole part 42 Air conduit 44 Valve body 46 Valve body support part (Valve support) means)
Claims (1)
ジアルタイヤを装着しうる１個のツインタイヤ用ホイー
ルにおいて、リムフランジ部の背面が互いに対向するよ
うに連結されるとともに両リムの対向する井戸部側壁の
内側に板厚部が設けられた２つのホイール部と、これら
の２つのホイール部の前記井戸部側壁と前記板厚部とを
それぞれタイヤ軸方向へ連通する貫通孔と、この貫通孔
と連結され前記板厚部にタイヤ半径方向側へ向けて設け
られ前記空気入りラジアルタイヤの空気充填部に連通さ
れた縦孔部と、前記２つのホイール部の前記貫通孔を互
いに連結する空気導管と、前記２つのホイール部の前記
縦孔部にそれぞれ設けられ前記２本の空気入りラジアル
タイヤの内圧差が所定値より小さい場合に前記縦孔部の
双方を連通状態とし前記２本の空気入りラジアルタイヤ
の内圧差が所定値より大きい場合に前記縦孔部の一方を
閉じる一対の弁装置と、を備え、前記一対の弁装置は２
本の空気入りラジアルタイヤの内圧差によって発生する
気流によって前記縦孔部内を移動する弁体と、この弁体
の前記貫通孔側への移動を制限し前記縦孔部を開状態と
する位置に保持する弁体支持手段と、前記弁体の前記２
本の空気入りラジアルタイヤの空気充填部側への移動に
よって閉塞される小径部と、から成ることを特徴とする
ツインタイヤ用ホイール。1. In one twin tire wheel capable of mounting two pneumatic radial tires having substantially the same outer diameter, the rear surfaces of the rim flange portions are connected so as to face each other, and the two rims are connected together. Two wheel portions each having a plate thickness portion provided on the inner side of the facing well portion side wall, and a through hole that communicates the well portion side wall and the plate thickness portion of these two wheel portions in the tire axial direction, respectively. A vertical hole portion which is connected to the through hole and is provided in the plate thickness portion toward the tire radial direction side and communicates with an air filling portion of the pneumatic radial tire, and the through hole of the two wheel portions are connected to each other. Both of the air conduits and the vertical holes provided in the vertical holes of the two wheel parts are in communication when the internal pressure difference between the two pneumatic radial tires is smaller than a predetermined value. A pair of valve devices that close one of the vertical hole portions when the internal pressure difference between the two pneumatic radial tires is larger than a predetermined value.
A valve body that moves in the vertical hole portion by the air flow generated by the internal pressure difference of the pneumatic radial tire of the book, and a position that opens the vertical hole portion by limiting the movement of the valve body toward the through hole side. A valve body supporting means for holding the valve body, and 2 of the valve body.
A wheel for twin tires, comprising: a small diameter portion that is closed by the movement of the pneumatic radial tire of the book toward the air filling portion side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03317853A JP3027041B2 (en) | 1991-12-02 | 1991-12-02 | Twin tire wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03317853A JP3027041B2 (en) | 1991-12-02 | 1991-12-02 | Twin tire wheels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05155210A true JPH05155210A (en) | 1993-06-22 |
| JP3027041B2 JP3027041B2 (en) | 2000-03-27 |
Family
ID=18092790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03317853A Expired - Fee Related JP3027041B2 (en) | 1991-12-02 | 1991-12-02 | Twin tire wheels |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3027041B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103747966A (en) * | 2011-05-19 | 2014-04-23 | 哈特奇桑公司 | Dual wheels with common hub adapter |
| CN107471907A (en) * | 2017-09-22 | 2017-12-15 | 甘泉龙 | A kind of high stability car wheel structure |
| CN110978886A (en) * | 2019-12-28 | 2020-04-10 | 浙江宏源车轮有限公司 | Multi-conical-surface double-rim wheel |
-
1991
- 1991-12-02 JP JP03317853A patent/JP3027041B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103747966A (en) * | 2011-05-19 | 2014-04-23 | 哈特奇桑公司 | Dual wheels with common hub adapter |
| CN103747966B (en) * | 2011-05-19 | 2016-08-24 | 哈特奇桑公司 | Dual wheels with public hub adapter |
| CN107471907A (en) * | 2017-09-22 | 2017-12-15 | 甘泉龙 | A kind of high stability car wheel structure |
| CN110978886A (en) * | 2019-12-28 | 2020-04-10 | 浙江宏源车轮有限公司 | Multi-conical-surface double-rim wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3027041B2 (en) | 2000-03-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |