JPH0434081Y2 - - Google Patents
Info
- Publication number
- JPH0434081Y2 JPH0434081Y2 JP1989119772U JP11977289U JPH0434081Y2 JP H0434081 Y2 JPH0434081 Y2 JP H0434081Y2 JP 1989119772 U JP1989119772 U JP 1989119772U JP 11977289 U JP11977289 U JP 11977289U JP H0434081 Y2 JPH0434081 Y2 JP H0434081Y2
- Authority
- JP
- Japan
- Prior art keywords
- tire
- block
- lug
- sidewall
- lugs
- 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
- 239000011324 bead Substances 0.000 claims description 11
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims 1
- 239000004576 sand Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、コードレスおよびチユーブレスで、
タイヤ内圧が０〜0.4Kgｆ／cm2の低圧とされてト
レツド部にブロツクパターンを有する低圧タイヤ
の改良に関し、農耕用、雪上作業機等の畑地、砂
地、雪上で使用される。[Detailed description of the invention] (Field of industrial application) This invention is cordless and tubeless.
This invention relates to an improvement of a low-pressure tire having a low internal pressure of 0 to 0.4 Kgf/cm 2 and having a block pattern in the tread portion, and is used for agricultural purposes, snow-working machines, etc. on fields, sandy soil, and snow.
（従来の技術）
砂、湿田、雪上等で使用されるタイヤは、砂、
泥および雪上を走行するために、タイヤが充分な
撓み、それにより広い接地面積を得、低接地圧と
すると共に多大な浮力を得る必要がある。そのた
め、この種のタイヤはコードレスおよびチユーブ
レスであり、０〜0.4Kgｆ／cm2の低圧で使用され
る。(Conventional technology) Tires used on sand, wet fields, snow, etc.
In order to drive on mud and snow, tires need to have sufficient deflection to provide a large contact area, low contact pressure, and high buoyancy. Therefore, this type of tire is cordless and tubeless, and is used at low pressures of 0 to 0.4 Kgf/cm 2 .
また、この種のタイヤとして牽引力（駆動力）
を得るために、そのトレツド部にブロツク状のラ
グを縦横に配置した所謂ブロツクパターンを有す
るものがある。（実開昭57−137505号公報）。 In addition, as this type of tire, the traction force (driving force)
In order to obtain this, some have a so-called block pattern in which block-shaped lugs are arranged vertically and horizontally in the tread portion. (Utility Model Application No. 57-137505).
（考案が解決しようとする課題）
前述公報に開示の低圧タイヤにあつては、次の
問題点がある。(Problems to be Solved by the Invention) The low-pressure tire disclosed in the above-mentioned publication has the following problems.
タイヤは硬質路面、すなわち、舗装路を走行す
るときは路面上を走行するが、砂、泥、雪上等を
走行するときは、砂、泥等の表土上を走行するの
ではなく、タイヤ接地圧（本機重量÷タイヤ本数
÷接地面積）と泥等の抵抗とが釣り合う泥中を走
行し、このときタイヤはそのサイドウオール部ま
で泥中に入つており、トレツド部にのみラグを形
成するだけでは、牽引力を充分に発揮し得るとは
言い難いものであつた。 Tires run on a hard road surface, i.e., when driving on a paved road, they run on the road surface, but when driving on sand, mud, snow, etc., they do not run on top soil such as sand, mud, etc., but the tire ground pressure increases. The machine runs through mud where the weight of the machine ÷ number of tires ÷ ground contact area is balanced with the resistance of the mud, etc. At this time, the tires are immersed in the mud up to their sidewalls, and only form lugs on the treads. However, it was difficult to say that the traction force could be sufficiently exerted.
また、前述公報に開示の低圧タイヤは、そのサ
イドウオール部の径外位置すなわち、シヨルダ部
に、円環リブを形成しているが、その円環リブは
牽引力には寄与するものではなかつた。 Further, although the low-pressure tire disclosed in the above-mentioned publication has an annular rib formed at a radially outer position of the sidewall portion, that is, at the shoulder portion, the annular rib does not contribute to traction force.
本考案は、このような従来技術の問題点に鑑
み、タイヤが泥、雪等の中にサイドウオール部ま
で没入した場合に、トレツド部のみブロツクラグ
でなくシヨルダ部およびサイドウオール部のブロ
ツクラグによつても牽引力を確保できるようにし
た低圧タイヤを提供することが目的である。 In view of the problems of the conventional technology, the present invention has been developed to prevent the tire from immersing in mud, snow, etc. up to the sidewall by using block lugs in the shoulder and sidewall sections instead of block lugs only in the tread section. The purpose is to provide a low-pressure tire that can secure traction even when the vehicle is in use.
（課題を解決するための手段）
本考案は、中央に位置するトレツド部３が両シ
ヨルダ部４を介して両サイドウオール部５および
ビード部６へトロイダルに連なり、ブロツクラグ
７の多数が、前記トレツド部３の外表面にタイヤ
周方向およびタイヤ軸方向に間隔を有して縦横に
配列されたブロツクラグパターンを有するコード
レスおよびチユーブレスでかつタイヤ内圧が０〜
0.4Kgｆ／cm2の低圧とされた低圧タイヤにおいて、
前述の目的を達成するために、次の技術的手段を
講じている。(Means for Solving the Problems) In the present invention, a tread portion 3 located at the center is toroidally connected to both side wall portions 5 and a bead portion 6 via both shoulder portions 4, and a large number of block lugs 7 A cordless or tubeless tire having a block lug pattern arranged vertically and horizontally at intervals in the tire circumferential direction and tire axial direction on the outer surface of the part 3, and the tire internal pressure is 0 to 0.
In low pressure tires with a low pressure of 0.4Kgf/ cm2 ,
In order to achieve the above objectives, the following technical measures have been taken:
すなわち、本考案は、前記両シヨルダ部４およ
び両サイドウオール部５の外表面にわたつてブロ
ツクラグ７の多数が、前記トレツド部３上のブロ
ツクラグ７とともに縦横に配列され、
前記両ビード部６近傍の外表面に、タイヤ周方
向にのびかつラグ高さと同程度に突出された円環
状リブ１２を有し、
前記両サイドウオール部５上のブロツクラグ７
のうち最径内位置のブロツクラグ７Ａの径内部分
に前記円環状リブ１２が一体に連結されているこ
とを特徴とするものである。 That is, in the present invention, a large number of block lugs 7 are arranged vertically and horizontally over the outer surfaces of both shoulder parts 4 and both sidewall parts 5, together with the block lugs 7 on the tread part 3, and in the vicinity of both the bead parts 6. It has an annular rib 12 on the outer surface extending in the tire circumferential direction and protruding to the same extent as the lug height, and has a block lug 7 on both sidewall parts 5.
It is characterized in that the annular rib 12 is integrally connected to the radially inner portion of the block lug 7A located at the innermost radially position.
（作用）
本考案によれば、タイヤ１が泥、雪等の中にタ
イヤサイドウオール部５までが没入して走行する
とき、トレツド部３に形成されたブロツクラグ７
だけでなく、タイヤシヨルダ部４およびタイヤサ
イドウオール部５におけるブロツクラグ７によつ
ても、牽引力を確保して、タイヤ１のスリツプを
防止して円滑かつ確実な走行がなされる。(Function) According to the present invention, when the tire 1 runs with the tire sidewall portion 5 immersed in mud, snow, etc., the block lug 7 formed on the tread portion 3
In addition, the block lugs 7 in the tire shoulder section 4 and the tire sidewall section 5 also ensure traction force, prevent the tire 1 from slipping, and ensure smooth and reliable running.
また、サイドウオール部５のブロツクラグ７
は、サイドウオール部５の径方向の撓みを許容す
るので、広い接地面積を得て、充分な浮力を確保
して湿田性能を維持する。 In addition, the block lug 7 of the side wall portion 5
Since the sidewall portion 5 is allowed to deflect in the radial direction, a wide ground contact area is obtained, sufficient buoyancy is ensured, and wet field performance is maintained.
また、サイドウオール部５の前記ブロツクラグ
７のうち、最径内位置にあるブロツクラグ７Ａ
は、第２図で示す如く円周方向にのびかつラグ高
さと同程度に突出した円環リブ１２で一体に連結
されているので、走行時、石その他の障害物に衝
突したとき、ラグ７Ａの過度の変形を阻止し、牽
引力を十分に発揮しつつサイドウオール部５を保
護する。 Also, among the block lug 7 of the sidewall portion 5, the block lug 7A located at the innermost position
As shown in FIG. 2, the lugs 7A are integrally connected by an annular rib 12 that extends in the circumferential direction and protrudes to the same extent as the lug height. To protect the sidewall portion 5 while preventing excessive deformation of the sidewall portion 5 and sufficiently exerting traction force.
（実施例）
以下、本考案の実施例を図面に基いて説明す
る。(Example) Hereinafter, an example of the present invention will be described based on the drawings.
第１図および第２図において、リム２に組込ま
れた扁平状低圧タイヤ１は、中央のトレツド部３
から左右のシヨルダ部４、サイドウオール部５お
よびビード部６がゴム等で一体成形されており、
その外周面にはブロツクラグ７が突設されてお
り、コードレスでかつチユーブレスとされてい
て、０〜0.4Kgｆ／cm2の内圧で使用される。８は
リム２に設けられたバルブ、９はビード部６に巻
かれたビード補強体を夫々示している。 1 and 2, a flat low-pressure tire 1 assembled into a rim 2 has a central tread portion 3.
The left and right shoulder portions 4, sidewall portions 5, and bead portions 6 are integrally molded from rubber or the like.
A block lug 7 is protruded from its outer peripheral surface, and it is cordless and tubeless, and is used at an internal pressure of 0 to 0.4 Kgf/cm 2 . Reference numeral 8 indicates a valve provided on the rim 2, and reference numeral 9 indicates a bead reinforcement body wound around the bead portion 6.
ブロツクラグ７は、トレツド部３において、縦
横（タイヤ回転方向およびタイヤ軸方向）に多数
配列されていてブロツクパターンとされ、更に、
トレツド部３だけでなく左右シヨルダ部４および
両サイドウオール部５に亘つても形成されてい
て、タイヤ外周面が全てブロツクパターンとされ
ている。 A large number of block lugs 7 are arranged vertically and horizontally (in the tire rotational direction and the tire axial direction) in the tread portion 3 to form a block pattern, and further,
It is formed not only in the tread part 3 but also in the left and right shoulder parts 4 and both sidewall parts 5, and the entire outer circumferential surface of the tire has a block pattern.
両サイドウオール部５のブロツクラグ７は、ビ
ード部６の近傍まで形成されていて、該ブロツク
ラグ７で牽引力を大きくするとともに硬質路面に
あつては、障害物よりサイドウオール部５を保護
する。 The block lugs 7 of both sidewall parts 5 are formed up to the vicinity of the bead part 6, and the block lugs 7 increase the traction force and protect the sidewall part 5 from obstacles on hard road surfaces.
サイドウオール部５に配置された前記ブロツク
ラグ７のうち、最径内位置にあるブロツクラグ７
Ａの径内部分は、第２図で示す如く円周方向にの
びかつラグ高さと同程度に突出された円環リブ１
２で一体に連結されている。 Among the block lug 7 arranged in the side wall portion 5, the block lug 7 located at the innermost position
The inner radial portion of A has an annular rib 1 extending in the circumferential direction and protruding to the same extent as the lug height, as shown in Fig. 2.
2 are connected together.
ブロツクラグ７が縦横に多数配列されることに
より、ブロツクラグ７間はいわば凹部１０とされ
ており、サイドウオール部５における凹部１０は
該サイドウオール部５の径方向の撓みを許容して
いる。 By arranging a large number of block lugs 7 vertically and horizontally, the spaces between the block lugs 7 are so-called recesses 10, and the recesses 10 in the sidewall portion 5 allow the sidewall portion 5 to deflect in the radial direction.
また、ブロツクラグ７は第２図で示す如く周方
向にラグ７と凹部１０とを交互に配列して、タイ
ヤ回転時に、ブロツクラグ７の立側面が蹴面部と
なるようにすることが望ましい。 Further, it is preferable that the block lug 7 has lugs 7 and recesses 10 arranged alternately in the circumferential direction as shown in FIG. 2, so that the vertical side of the block lug 7 becomes a kick surface when the tire rotates.
なお、ブロツクラグ７はその断面形状は台形
で、平面形状は四角形でも円形でもよく四角形以
外の多角形であつてもよく、ラグ７の頂面にはサ
イプ（細溝）を形成してもよい。その他、図中符
号１１はタイヤ中心線（赤道）を示している。ま
た、ビード補強体９はビード部６に埋入したもの
でもよい。 The cross-sectional shape of the block lug 7 is a trapezoid, the planar shape may be a square, a circle, or a polygon other than a square, and a sipe (narrow groove) may be formed on the top surface of the lug 7. Additionally, reference numeral 11 in the figure indicates the tire center line (equator). Further, the bead reinforcing body 9 may be embedded in the bead portion 6.
（考案の効果）
本考案は以上の通りであり、本考案によれば、
ブロツクラグは、トレツド部のみでなくシヨルダ
部およびサイドウオール部に亘つても形成されて
いるので、このタイヤが泥、雪等にサイドウオー
ル部までが進入（没入）して走行する場合（第３
図参照）、シヨルダ部およびサイドウオール部の
ブロツクラグによつても牽引力を確保してスリツ
プせず円滑で確実な走行を約束する。(Effects of the invention) The invention is as described above, and according to the invention,
Block lugs are formed not only in the tread section but also in the shoulder section and sidewall section, so when the tire runs with the sidewall section penetrating into mud, snow, etc.
(see figure), block lugs in the shoulder and sidewall sections also ensure traction, ensuring smooth and reliable running without slipping.
また、サイドウオール部はこれにブロツクラグ
を形成していてもその径方向の撓みを許容できる
ので、ブロツクラグを形成して牽引力を増加した
にも拘わらず、サイドウオール部の撓みは損なわ
れることがなく、タイヤ内圧が低圧であることと
相まつて接地面積の充分な確保と浮力を確保して
湿田性能を約束する。 In addition, the sidewall part can tolerate radial deflection even if a block lug is formed on it, so even though the block lug is formed to increase the traction force, the sidewall part remains flexible. This, combined with the low internal tire pressure, ensures sufficient ground contact area and buoyancy, ensuring wet paddy performance.
サイドウオール部に配列した前記ブロツクラグ
のうち、最径内位置にあるブロツクラグは、タイ
ヤ周方向にのびかつラグ高さと同程度に突出され
た円環状リブで径内部分が一体に連結されている
ので、走行時、サイドウオール部が石その他の障
害物に衝突したとき、ラグの過度の変形を阻止
し、牽引力を十分に発揮しつつサイドウオール部
を保護する。 Among the block lugs arranged in the sidewall part, the block lug located at the innermost radial position has its inner radial portion integrally connected by an annular rib that extends in the circumferential direction of the tire and protrudes to the same extent as the lug height. When the sidewall part collides with a stone or other obstacle while driving, it prevents excessive deformation of the lugs and protects the sidewall part while exerting sufficient traction force.
図面は本考案の実施例を示し、第１図はタイヤ
径方向の断面図、第２図は左半部の展開平面図、
第３図は使用状態の断面図である。
１……タイヤ、３……トレツド部、４……シヨ
ルダ部、５……サイドウオール部、６……ビード
部、７……ブロツクラグ、１２……円環状リブ。
The drawings show an embodiment of the present invention; FIG. 1 is a cross-sectional view in the tire radial direction, FIG. 2 is a developed plan view of the left half,
FIG. 3 is a sectional view of the device in use. DESCRIPTION OF SYMBOLS 1... Tire, 3... Tread part, 4... Shoulder part, 5... Sidewall part, 6... Bead part, 7... Block lug, 12... Annular rib.
Claims (1)
を介して両サイドウオール部５およびビード部６
へトロイダルに連なり、ブロツクラグ７の多数
が、前記トレツド部３の外表面にタイヤ周方向お
よびタイヤ軸方向に間隔を有して縦横に配列され
たブロツクラグパターンを有するコードレスおよ
びチユーブレスでかつタイヤ内圧が０〜0.4Kg
ｆ／cm2の低圧とされた低圧タイヤにおいて、 前記両シヨルダ部４および両サイドウオール部
５の外表面にわたつてブロツクラグ７の多数が、
前記トレツド部３上のブロツクラグ７とともに縦
横に配列され、 前記両ビード部６近傍の外表面に、タイヤ周方
向にのびかつラグ高さと同程度に突出された円環
状リブ１２を有し、 前記両サイドウオール部５上のブロツクラグ７
のうち最径内位置のブロツクラグ７Ａの径内部分
に前記円環状リブ１２が一体に連結されているこ
とを特徴とする低圧タイヤ。[Claims for Utility Model Registration] The tread portion 3 located in the center is connected to both shoulder portions 4.
through both side wall portions 5 and bead portions 6
The tire is a cordless and tubeless tire which has a hetroidal arrangement and a large number of block lugs 7 are arranged on the outer surface of the tread portion 3 in a vertical and horizontal manner with intervals in the tire circumferential direction and the tire axial direction. 0～0.4Kg
In a low-pressure tire with a low pressure of f/cm 2 , a large number of block lugs 7 extend over the outer surfaces of both shoulder portions 4 and both sidewall portions 5.
The ring-shaped ribs 12 are arranged vertically and horizontally together with the block lugs 7 on the tread portion 3, and have annular ribs 12 extending in the tire circumferential direction and protruding to the same extent as the lug height on the outer surface near both the bead portions 6; Brock lug 7 on sidewall part 5
A low-pressure tire characterized in that the annular rib 12 is integrally connected to the innermost radial portion of the block lug 7A located at the innermost radial position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989119772U JPH0434081Y2 (en) | 1989-10-16 | 1989-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989119772U JPH0434081Y2 (en) | 1989-10-16 | 1989-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0256701U JPH0256701U (en) | 1990-04-24 |
| JPH0434081Y2 true JPH0434081Y2 (en) | 1992-08-14 |
Family
ID=31365293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989119772U Expired JPH0434081Y2 (en) | 1989-10-16 | 1989-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434081Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144501A (en) * | 2011-12-06 | 2013-06-12 | 东洋橡胶工业株式会社 | Pneumatic radial tire |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60107402A (en) * | 1983-11-16 | 1985-06-12 | Honda Motor Co Ltd | Superlow-pressure tire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49115801U (en) * | 1973-01-31 | 1974-10-03 |
-
1989
- 1989-10-16 JP JP1989119772U patent/JPH0434081Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60107402A (en) * | 1983-11-16 | 1985-06-12 | Honda Motor Co Ltd | Superlow-pressure tire |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144501A (en) * | 2011-12-06 | 2013-06-12 | 东洋橡胶工业株式会社 | Pneumatic radial tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0256701U (en) | 1990-04-24 |
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