JPS62151101U

JPS62151101U -

Info

Publication number: JPS62151101U
Application number: JP4036786U
Authority: JP
Priority date: 1986-03-18
Filing date: 1986-03-18
Publication date: 1987-09-25
Anticipated expiration: 2001-03-18
Also published as: JPH0521441Y2

Description

[Brief explanation of the drawing]

第１〜３図は本考案に係る空気入りタイヤの一
実施例を示す図であり、第１図はそのトレツド１
２の一部展開図、第２図は第１図のＣ矢視斜視図
、第３図は第１図の―矢視断面図および試験
タイヤの比較例１、２の溝断面形状図である。第
４図ａ〜ｄはそれぞれ本考案の空気入りタイヤの
他の実施例の前述の第３図に対応する断面図であ
る。第５，６図は従来の空気入りタイヤを示す図
であり、第５図はそのトレツドの一部展開図、第
６図は第５図の―矢視断面図である。１１……空気入りタイヤ、１２……トレツド、
１２ａ……両側端面、１２ｂ……中央部、１２ｃ
……側端、１３……ラグ、１３ａ……側壁、１５
……ラグ溝、１７……ブロツク、１７ａ……側壁
、１８……ジグザグ溝、２０……トレツド中央、
２１……周方向溝、２３，２５，３０，３２，３
４ａ，３４ｂ，３６ａ，３６ｂ，３８ａ……張出
部、Ｈ_１５……ラグ溝の溝高さ、ｈ_２３……張出
部２３の張出し高さ、ＴＷ_１２……トレツド幅、
ＴＷ_２３……張出部２３の張出し長さ、Ｗ_１５…
…ラグ溝の溝幅、ｗ_２３……張出部２３の張出し
幅、Ａ……タイヤ軸方向、Ｂ……タイヤ周方向。 1 to 3 are views showing an embodiment of the pneumatic tire according to the present invention, and FIG. 1 shows the tread 1 of the pneumatic tire.
FIG. 2 is a perspective view taken along arrow C in FIG. 1, and FIG. 3 is a sectional view taken along arrow - in FIG. . FIGS. 4a to 4d are sectional views corresponding to the aforementioned FIG. 3 of other embodiments of the pneumatic tire of the present invention, respectively. 5 and 6 are views showing a conventional pneumatic tire, FIG. 5 being a partially exploded view of its tread, and FIG. 6 being a sectional view taken along the arrow - in FIG. 11...pneumatic tire, 12...tread,
12a...Both end surfaces, 12b...Central part, 12c
...Side end, 13...Lug, 13a...Side wall, 15
...Lug groove, 17...Block, 17a...Side wall, 18...Zigzag groove, 20...Tread center,
21... Circumferential groove, 23, 25, 30, 32, 3
4a, 34b, 36a, 36b, 38a...Protrusion portion, _H15 ...Groove height of the lug groove, _h23 ...Protrusion height of the protrusion part 23, _TW12 ...Tread width,
TW ₂₃ ... Length of overhang of overhang 23, W ₁₅ ...
... Groove width of the lug groove, w ₂₃ ... Projection width of the projecting portion 23, A ... Tire axial direction, B ... Tire circumferential direction.

補正昭６１．６．２０図面の簡単な説明を次のように補正する。明細書第１１頁第５行目に「図ａ〜ｄは」とあ
るを、「図ａ〜ｅは」と補正する。Amendment June 20, 1986 The brief description of the drawing is amended as follows. In the fifth line of page 11 of the specification, the phrase ``Figures a to d'' is amended to ``Figures a to e''.

Claims

[Scope of utility model registration request]

A pneumatic tire that has lugs that form a pair in the tire axial direction at both ends of the tire tread and lug grooves adjacent to the lugs, and in which a large number of lugs and lug grooves are arranged alternately in the tire circumferential direction. , the lug has a protrusion on at least one side wall of the lug that protrudes into the lug groove with a stepped cross section, and the protrusion extends from both ends of the tread toward the center of the tread by 20% of the tread width.
or more, the overhang height h of the overhang portion is 20 to 50% of the depth H of the lug groove, and the overhang width w of the overhang portion is 20 to 20% of the entire groove W including the overhang width of the lug groove. 7
A pneumatic tire characterized by having 0%.