JPH01254402A - Small size spare tire - Google Patents
Small size spare tireInfo
- Publication number
- JPH01254402A JPH01254402A JP63082298A JP8229888A JPH01254402A JP H01254402 A JPH01254402 A JP H01254402A JP 63082298 A JP63082298 A JP 63082298A JP 8229888 A JP8229888 A JP 8229888A JP H01254402 A JPH01254402 A JP H01254402A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- outside
- spare tire
- tread
- wheel
- 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
Links
- 230000000694 effects Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、直進走行性を向上させた小型スペアタイヤに
関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a small spare tire with improved straight running performance.
最近、スペアタイヤとしては、保管場所の節約や軽量化
による燃費性の向上等の要請から、通常使用されるグラ
ンドタイヤに比して外径および幅が小さい小型タイヤが
用いられるようになってきた。Recently, small tires with a smaller outer diameter and width than the normally used ground tires have come to be used as spare tires due to demands such as saving storage space and improving fuel efficiency through weight reduction. .
しかし、この小型スペアタイヤを例えば第３図に示すよ
うに車両の右前輪に装着した場合、グランドタイヤ１に
比して小型スペアタイヤ２の外径が小さいために、車両
が矢印Ｔの方向に右旋回し、車両の直進走行性が損なわ
れてしまう。However, when this small spare tire is attached to the right front wheel of the vehicle as shown in FIG. Turns to the right, impairing the vehicle's ability to drive straight.
本発明は、車両の直進走行性に対する偏向成分としてコ
ニシティを付加し、グランドタイヤとスペアタイヤとの
外径差に起因する偏向を打ち消して直進走行性を向上せ
しめた小型スペアタイヤを提供することを目的とする。The present invention aims to provide a small spare tire that improves straight-line running performance by adding conicity as a deflection component to the straight-line running performance of a vehicle and canceling the deflection caused by the difference in outer diameter between the ground tire and the spare tire. purpose.
このため、本発明は、車両に装着し回転させた場合にお
いて、車両外側から車両内側へ向かう横力を発生させる
小型スペアタイヤを要旨とする。Therefore, the gist of the present invention is a small spare tire that, when mounted on a vehicle and rotated, generates a lateral force from the outside of the vehicle toward the inside of the vehicle.
以下、本発明の構成につき詳しく説明する。Hereinafter, the configuration of the present invention will be explained in detail.
第１図は車両の右前輪に装着した場合の本発明の小型ス
ペアタイヤの一例の後面視説明図、第２図はその子午線
方向断面説明図である。FIG. 1 is an explanatory rear view of an example of a small spare tire of the present invention when mounted on the right front wheel of a vehicle, and FIG. 2 is an explanatory cross-sectional view in the meridian direction thereof.
第１図においては、小型スペアタイヤ２ではトレッド半
径Ｒ＋ 、Ｒｚ 、・・・・・・が車両内側方向に徐々
に減少するように（Ｒ１＜Ｒ２）、トレ・ノド表面３を
傾斜させている。トレッド表面３のタイヤ回転軸Ｍに対
する傾斜角度θ（第２図参照）は、２°〜５６程度でよ
い。In FIG. 1, the small spare tire 2 has its tread throat surface 3 inclined so that the tread radius R+, Rz, . . . gradually decreases toward the inside of the vehicle (R1<R2). . The inclination angle θ (see FIG. 2) of the tread surface 3 with respect to the tire rotation axis M may be about 2° to 56°.
また、本発明では、このようにトレンド表面３を傾斜さ
せることなしに、トレッド部の剛性を車両外側よりも車
両内側の方を小さくしてもよい。トレッド部の剛性を車
両外側よりも車両内側の方を小さくするためには、例え
ば、トレッドゴムの硬さを車両外側よりも車両内側の方
を小さくすればよい。また、トレッド溝の配置を車両外
側よりも車両内側の方を多くすることによっても同様の
効果が得られる。ラジアル構造のスペアタイヤの場合に
は、ベルトを車両内側に向けてオフセンターに配置する
ことによっても同様の効果が得られる。第２図において
、４はリムを表わす。Furthermore, in the present invention, the rigidity of the tread portion may be made smaller on the inside of the vehicle than on the outside of the vehicle, without inclining the trend surface 3 in this manner. In order to make the rigidity of the tread portion smaller on the inside of the vehicle than on the outside of the vehicle, for example, the hardness of the tread rubber may be made smaller on the inside of the vehicle than on the outside of the vehicle. The same effect can also be obtained by arranging more tread grooves on the inside of the vehicle than on the outside of the vehicle. In the case of a spare tire with a radial structure, a similar effect can be obtained by arranging the belt off-center toward the inside of the vehicle. In FIG. 2, 4 represents the rim.
このように、トレッド表面３を傾斜させるか又はトレッ
ド部の剛性を車両外側よりも車両内側の方を小さくする
と、走行中において第１図に示すように車両外側から内
側゛への方向、すなわち矢印Ａで示す方向にコニシティ
が作用することになるので、小型スペアタイヤ２が矢印
Ｅの方向に左旋回しようとする。In this way, if the tread surface 3 is inclined or the rigidity of the tread portion is made smaller on the inside of the vehicle than on the outside of the vehicle, the direction from the outside to the inside of the vehicle, as shown in FIG. Since conicity acts in the direction shown by A, the small spare tire 2 tries to turn left in the direction of arrow E.
したがって、第３図に示すように車両が矢印Ｔの方向に
右旋回しようとしても、小型スペアタイヤ２が矢印Ｅの
方向に左旋回しようとするため、互いにその旋回機能を
失って、結果的には小型スペアタイヤ２の直進走行性が
向上することになる（小型スペアタイヤを車両の左前輪
に装着した場合には、矢印Ｔおよび矢印Ｅの方向がそれ
ぞれ上記と逆となる）。Therefore, even if the vehicle attempts to turn right in the direction of arrow T as shown in FIG. In this case, the straight running performance of the small spare tire 2 is improved (if the small spare tire is mounted on the left front wheel of the vehicle, the directions of arrow T and arrow E will be opposite to the above).
本発明による小型スペアタイヤは、空気タイヤのみなら
ず非空気式タイヤにも適用できる。The small spare tire according to the present invention can be applied not only to pneumatic tires but also to non-pneumatic tires.
以上説明したように本発明によれば、トレッド表面を車
両外側から内側に傾斜させるか又はトレッド部の剛性を
車両外側よりも車両内側の方を小さくしたため、車両の
直進走行性を十分に向上させることが可能となる。As explained above, according to the present invention, the tread surface is inclined from the outside of the vehicle to the inside, or the rigidity of the tread portion is made smaller on the inside of the vehicle than on the outside of the vehicle, thereby sufficiently improving the straight-line running performance of the vehicle. becomes possible.
第１図は車両の右前輪に装着した場合の本発明の小型ス
ペアタイヤの一例の後面視説明図、第２図はその子午線
方向断面説明図、第３図は小型スペアタイヤを車両の右
前輪に装着させて走行する場合の走行状況を示す説明図
である。
１・・・グランドタイヤ、２・・・小型スペアタイヤ、
３・・・トレッド表面、４・・・リム、Ｍ・・・タイヤ
回転軸。
代理人 弁理士 小 川 信 −Fig. 1 is an explanatory rear view of an example of the small spare tire of the present invention when installed on the right front wheel of a vehicle, Fig. 2 is an explanatory view of its cross section in the meridian direction, and Fig. 3 is an explanatory view of the small spare tire mounted on the right front wheel of the vehicle. FIG. 2 is an explanatory diagram showing a driving situation when the vehicle is mounted on the vehicle. 1... Grand tire, 2... Small spare tire,
3...Tread surface, 4...Rim, M...Tire rotation axis. Agent Patent Attorney Nobuo Ogawa −
Claims (1)
両内側へ向かう横力を発生させる小型スペアタイヤ。A small spare tire that, when mounted on a vehicle and rotated, generates lateral force from the outside of the vehicle toward the inside of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63082298A JPH01254402A (en) | 1988-04-05 | 1988-04-05 | Small size spare tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63082298A JPH01254402A (en) | 1988-04-05 | 1988-04-05 | Small size spare tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01254402A true JPH01254402A (en) | 1989-10-11 |
Family
ID=13770642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63082298A Pending JPH01254402A (en) | 1988-04-05 | 1988-04-05 | Small size spare tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01254402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019111859A (en) * | 2017-12-21 | 2019-07-11 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
-
1988
- 1988-04-05 JP JP63082298A patent/JPH01254402A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019111859A (en) * | 2017-12-21 | 2019-07-11 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
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