JPH0111521Y2 - - Google Patents
Info
- Publication number
- JPH0111521Y2 JPH0111521Y2 JP16053082U JP16053082U JPH0111521Y2 JP H0111521 Y2 JPH0111521 Y2 JP H0111521Y2 JP 16053082 U JP16053082 U JP 16053082U JP 16053082 U JP16053082 U JP 16053082U JP H0111521 Y2 JPH0111521 Y2 JP H0111521Y2
- Authority
- JP
- Japan
- Prior art keywords
- tread
- tread rubber
- tangent
- baseband
- tire
- 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.)
- Expired
Links
- 239000007787 solid Substances 0.000 claims description 7
Landscapes
- Tires In General (AREA)
Description
本考案はステアリング性及びシヨルダー部の耐
損傷性を改善したソリツドタイヤに関する。
一般にソリツドタイヤは環状のベースバンドの
外周面に断面形状が略台形状のトレツドゴムを貼
設しているが、このトレツドゴムはその側面を、
ラジアル面即ちベースバンド側面に平行な平面に
対して小角度で傾斜させている。これはソリツド
タイヤが通常比較的直進走行が多い車両に装着さ
れるとともに、トレツド接地面の耐摩耗を重視し
ていることによる。しかしこの種のタイヤを、
360゜旋回する機構の車両に用いる場合、回転抵抗
が大きく、ステアリングが困難で、更には旋回時
にトレツドシヨルダー部に応力集中が生じ、該部
分で亀裂、欠け等の損傷が発生し、タイヤの寿命
を著しく短縮する。
本考案はかかる問題点を解決するものであつ
て、旋回時の回転抵抗性、ステアリング性を改善
するとともに、耐損傷性を従来と同程度に維持し
うるソリツドタイヤの提供を目的としている。
以下本考案の実施例を図面にしたがつて説明す
る。本考案のソリツドタイヤ１は、ベースバンド
２とその外周に貼設されるトレツドゴム３を備
え、かつ該トレツドゴム３の側面３ａを緩傾斜と
するとともに、シヨルダー部における断面外郭線
の曲率半径Ｒを大に設定している。トレツドゴム
３は、ラジアル面QP即ち例えばベースバンド２
の側面を通るラジアル方向の平面と、トレツドゴ
ム３の側面３ａの接線QEとがなす角度θで定義
されるトレツド側面勾配を、20〜35゜の範囲とし
ており、これはトレツド側面勾配を20゜より小さ
くすると旋回時の回転低抗性、ステアリング性が
悪くなり、他方35゜を超えると、接地圧が過大と
なつて耐摩耗性が著しく低下するためである。
又シヨルダー部は、トレツド接地面上の中心Ｃ
を通る接線CFと、前記トレツドゴム３の側面３
ａの接線QEとに外接する曲率半径Ｒで定義され
るシヨルダーラジアスと、トレツドゴム３の厚さ
Ｔとの間にＲ＝KTの関係を充足するように形成
している。ここで定数Ｋは0.5〜0.9の範囲であ
り、タイヤのサイズ、用途、車両の機能等を考慮
して決定されるが、荷重条件が比較的ゆるやか、
かつ旋回頻度の高いタイヤでは、定数Ｋの値を大
きくする。前記等式の条件は、トレツドゴム３の
The present invention relates to a solid tire with improved steering performance and shoulder damage resistance. Generally, solid tires have tread rubber with a substantially trapezoidal cross section attached to the outer circumferential surface of an annular baseband.
It is inclined at a small angle with respect to a radial plane, that is, a plane parallel to the side surface of the baseband. This is because solid tires are usually installed on vehicles that travel relatively often in a straight line, and because they emphasize the wear resistance of the tread contact surface. However, this type of tire
When used in a vehicle with a 360° turning mechanism, the rotational resistance is large, making steering difficult.Furthermore, stress concentration occurs in the tread shoulder part when turning, which can cause damage such as cracks and chips to the tire. Significantly shortens the lifespan of The present invention is intended to solve these problems, and aims to provide a solid tire that can improve rotational resistance and steering performance during turning, and maintain damage resistance at the same level as conventional tires. Embodiments of the present invention will be described below with reference to the drawings. The solid tire 1 of the present invention includes a base band 2 and a tread rubber 3 attached to the outer periphery of the base band 2, and the side surface 3a of the tread rubber 3 is gently sloped, and the radius of curvature R of the cross-sectional outline at the shoulder portion is increased. It is set. The tread rubber 3 has a radial surface QP, that is, for example, the baseband 2.
The tread side slope defined by the angle θ formed by the radial plane passing through the side surface of the tread rubber 3 and the tangent line QE of the side surface 3a of the tread rubber 3 is in the range of 20 to 35 degrees. If the angle is too small, low rotational resistance during turning and steering performance will deteriorate, while if it exceeds 35°, the ground pressure will become excessive and the wear resistance will drop significantly. Also, the shoulder part is located at the center C on the tread ground plane.
The tangent CF passing through and the side surface 3 of the treaded rubber 3
The shoulder radius defined by the radius of curvature R circumscribing the tangent QE of a and the thickness T of the tread rubber 3 are formed so as to satisfy the relationship R=KT. Here, the constant K is in the range of 0.5 to 0.9, and is determined by considering the tire size, purpose, vehicle function, etc., but if the loading conditions are relatively gentle,
In addition, for tires that turn frequently, the value of the constant K is increased. The conditions of the above equation are as follows:
【表】【table】
【表】
回転抵抗性は車のステアリングトルクを測定し
た。また耐損傷性について、神鋼電機(株)のFB25
のラムリフトの後輪に４個装着し、10トンコイル
を15000個運搬（全稼動時間720時間）した後、シ
ヨルダー部のラジアル方向亀裂発生個数を測定し
たところ比較例は50個であるのに対し本考案の実
施例は０であつた。[Table] Rotation resistance was determined by measuring the steering torque of the car. Regarding damage resistance, Shinko Electric Co., Ltd.'s FB25
After transporting 15,000 10-ton coils (total operating time: 720 hours), we measured the number of cracks in the radial direction of the shoulder section. The number of embodiments of the invention was 0.
第１図は本考案の一実施例を示す部分断面図で
ある。
１……ソリツドタイヤ、２……ベースバンド、
３……トレツドゴム、３ａ……トレツドゴム側
面、Ｒ……曲率半径、θ……角度。
FIG. 1 is a partial sectional view showing an embodiment of the present invention. 1...Solid tire, 2...Baseband,
3... Treaded rubber, 3a... Treaded rubber side surface, R... Radius of curvature, θ... Angle.
Claims (1)
ゴムとを備え、かつタイヤのラジアル面QPとト
レツドゴムの側面の接線QEとがなす角度θで定
義されるトレツド側面勾配が20〜35゜の範囲であ
り、トレツド接地面上の中心Ｃを通る接線CFと
前記接線QEに外接する曲率半径Ｒで定義される
シヨルダーラジアスとトレツドゴム厚さＴと0.5
〜0.9の値を有する定数ＫとがＲ＝KTの関係であ
ることを特徴とするソリツドタイヤ。 It comprises a baseband and a tread rubber attached to the outer periphery of the baseband, and the tread side slope defined by the angle θ between the radial surface QP of the tire and the tangent line QE to the side surface of the tread rubber is in the range of 20 to 35 degrees, The shoulder radius defined by the tangent CF passing through the center C on the tread contact surface and the radius of curvature R circumscribing the tangent QE, the tread rubber thickness T, and 0.5
A solid tire characterized in that a constant K having a value of ~0.9 has a relationship of R=KT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16053082U JPS5964304U (en) | 1982-10-22 | 1982-10-22 | solid tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16053082U JPS5964304U (en) | 1982-10-22 | 1982-10-22 | solid tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5964304U JPS5964304U (en) | 1984-04-27 |
| JPH0111521Y2 true JPH0111521Y2 (en) | 1989-04-05 |
Family
ID=30353055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16053082U Granted JPS5964304U (en) | 1982-10-22 | 1982-10-22 | solid tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5964304U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006096173A (en) * | 2004-09-29 | 2006-04-13 | Cci Corp | Solid tire |
| CN104085252A (en) * | 2008-03-11 | 2014-10-08 | 阿蒂克投资股份有限公司 | Wheel, rim and tire |
-
1982
- 1982-10-22 JP JP16053082U patent/JPS5964304U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5964304U (en) | 1984-04-27 |
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