JPS584609A - Assembly of tire and rim - Google Patents
Assembly of tire and rimInfo
- Publication number
- JPS584609A JPS584609A JP56102127A JP10212781A JPS584609A JP S584609 A JPS584609 A JP S584609A JP 56102127 A JP56102127 A JP 56102127A JP 10212781 A JP10212781 A JP 10212781A JP S584609 A JPS584609 A JP S584609A
- Authority
- JP
- Japan
- Prior art keywords
- bead
- rim
- seat
- bead seat
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/02—Seating or securing beads on rims
- B60C15/0209—Supplementary means for securing the bead
- B60C15/0226—Supplementary means for securing the bead the bead being secured by protrusions of the rim extending from the bead seat, e.g. hump or serrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はリム組み作業が容易で空気洩れがなく、シかも
リム外れのないタイヤとリムの組立体に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire and rim assembly that allows easy rim assembly work, prevents air leakage, and prevents the rim from coming off.
一般にタイヤとリムの組立体は第１図に示す如き形状の
リムのビード座（１１）上にタイヤ外皮（１２）を載置
し、これに−室内圧を充填することによりビード座（１
１）及びリムフランジ（１４）にビード部（１５）を圧
着してリム上にタイヤ外皮が保持される。かかる従来の
構造のタイヤとリムの組立体では走行中に瞬間的に大き
な横方向衝撃を受けた場合、あるいは内圧が低下した場
合。Generally, the assembly of a tire and a rim is carried out by placing a tire outer skin (12) on the bead seats (11) of a rim shaped as shown in Fig. 1, and then filling this with indoor pressure.
1) and the bead portion (15) is pressed onto the rim flange (14) to hold the tire outer skin on the rim. When a tire and rim assembly with such a conventional structure receives a momentary large lateral impact while driving, or when the internal pressure drops.
ビード部がビード座の内側方向に移動して、ついにはリ
ムウェルに脱落する欠点姑ある。一方従来かもタイヤの
リム外れを防止する為、ビード部の動きを固定保持する
所謂ビードスペーサーが多く提案されているが、これら
はリム組み作業性を犠牲にするほか、構造が複離であり
製造費−高価となる。本発明はかかる問題点を総合的に
解決したもので構造を簡略化するとともにリム外れがな
くしかもリム組み作業が容易なタイヤとリムの組立体を
提供することを目的とする。The disadvantage is that the bead part moves inward of the bead seat and eventually falls off into the rim well. On the other hand, in order to prevent the tire from coming off the rim, many so-called bead spacers have been proposed that fix and hold the movement of the bead, but these do not only sacrifice workability when assembling the rim, but also have a complex structure that makes manufacturing difficult. Cost – Expensive. The present invention comprehensively solves these problems, and aims to provide a tire and rim assembly that has a simplified structure, prevents the rim from coming off, and is easy to assemble.
以下本発明のタイヤとリムの組立体の実施例を図面にし
たがって説明する。Embodiments of the tire and rim assembly of the present invention will be described below with reference to the drawings.
第２図は本発明に係る組立体の一部断面図を示す。図に
おいてリム（１）のビード座（５）はビードヒール部（
６）と密接する近傍でタイヤ外側から内側方向へ下降す
る傾斜を有する外側ビード座（２）と、ビードトウ部（
７）と密接する近傍で内側から外側方向へ下降する傾斜
を有する内側と−ド座（５）で構成される。即ちビード
座（５）は外側ビード座と内側ビード座の傾斜の交点（
巧又はこの近傍で最も低く、内方端及び外方端方向に上
昇する傾斜を有する略Ｖ字形状・で形成される。そこで
ビード座の該形状に対応して底部な略Ｖ字形状にしたビ
ード部を前記ビード座に嵌合することによりビード座の
内方端及び外方端から中央部の前記交点（ｐ）方向にゴ
ムが圧縮されど一ド座上にビード部が締め付けられるこ
ととなりビード部の保持が強固となりリム外れが生じな
くなるとともにエアーシール効果も高くなる。かかる効
果は外側ビード座（２）及び内側ビード座（３）の回転
軸と平行な線（Ｍ）となす角度α及びβが大きくなるに
したがって高くなる傾向にあるが、この角度を余り大き
くするとリムとビード部の嵌合密着性が低下する為好ま
しくない。したがって前記角度ａ、βは５°−４５°の
範囲、特に好ましくは１０°−３０°の範囲で設定され
る。FIG. 2 shows a partial sectional view of an assembly according to the invention. In the figure, the bead seat (5) of the rim (1) is located at the bead heel (
an outer bead seat (2) having an inclination that descends from the outer side of the tire toward the inner side in close proximity to the bead toe portion (2);
7), which has an inclination that descends from the inside toward the outside in close proximity to the inside and the dowel seat (5). That is, the bead seat (5) is located at the intersection of the slopes of the outer bead seat and the inner bead seat (
It is formed in a substantially V-shape with an inclination that is lowest at or near this point and rises toward the inner and outer ends. Therefore, by fitting the bead portion, which has a substantially V-shaped bottom portion corresponding to the shape of the bead seat, into the bead seat, the direction from the inner and outer ends of the bead seat to the intersection point (p) in the central portion is made. When the rubber is compressed, the bead portion is tightened onto the seat, and the bead portion is firmly held, preventing the rim from coming off and increasing the air sealing effect. This effect tends to increase as the angles α and β between the outer bead seat (2) and the inner bead seat (3) and a line (M) parallel to the axis of rotation become larger; however, if this angle becomes too large, This is undesirable because it reduces the fit and adhesion between the rim and the bead. Therefore, the angles a and β are set in the range 5°-45°, particularly preferably in the range 10°-30°.
次に前記内側ビード座（３）はビードトウ部と密接しビ
ード部を強固に固定保持するとともに内部充填空気が外
部に漏れるのを防止する機能を有する。したがって内側
ビード座（５）の回転軸方向長さＣＬ）の５０チ以上で
あることが望まし鱒。Next, the inner bead seat (3) has the function of coming into close contact with the bead toe portion, firmly fixing and holding the bead portion, and preventing internally filled air from leaking to the outside. Therefore, it is desirable that the length CL of the inner bead seat (5) in the rotational axis direction is 50 inches or more.
しかし７０チを越えると外側ビード座（２）の機能、即
ちビードヒール部の圧縮歪を有効に分散。However, when it exceeds 70 inches, the function of the outer bead seat (2) effectively disperses the compressive strain at the bead heel.
緩和する機能が低下する傾向にある。The ability to provide relief tends to decline.
次に内側ビード座（３）の内方端に隣接し円周方向に形
成される突起部（８）はビードトウ部側面と当接しその
横方向の移動を固定保持する機能を有する。尚本発明の
組立体は分割リム、単一リムの両方に適用できるが、特
に第２鏝よこ示す如く単一リムに適用する場合、リム組
み作業を容易にする為にそのビード座の上端部からの高
さ軸）はリムウェル深さくＤ）より小さく設定され１例
えば通常２ｍ−１９ｓｓの範囲で選喜される。Next, a protrusion (8) adjacent to the inner end of the inner bead seat (3) and formed in the circumferential direction has the function of abutting against the side surface of the bead toe and fixing the lateral movement thereof. The assembly of the present invention can be applied to both split rims and single rims, but especially when applied to a single rim as shown in the second trowel side, the upper end of the bead seat is The height axis from the rim well depth D) is set smaller than the rim well depth D), and is usually selected within the range of 2 m to 19 ss, for example.
更にリムフランジ（９）の内面接線（３）の回転軸と平
行な線（ロ）となす角度（ｒ）は７５°−１０５°の場
合に前記内側ビード座（３）との傾斜効果と相俟ってビ
ード部を一層強固に締め付け、ビード保持力が一層改善
される。Furthermore, when the angle (r) between the inner surface line (3) of the rim flange (9) and a line (b) parallel to the axis of rotation is 75°-105°, there is an inclination effect with the inner bead seat (3). Together, the bead portion is tightened even more firmly, and the bead retention force is further improved.
次にタイヤのビード部は第２図に示される如くビード座
と嵌合するに際し密着性、圧縮歪等を考慮して前記ビー
ド座のＶ字形状に対応してビード底部の形状を中央凸状
に形成される。またビード部にはタイヤ内側からビード
座（５）及びリムフランジ（９）と隣接する領域を越え
リムフランジ上部に至る補強層（１０）が配置され、こ
れによってエアーシール効果とビード部の摩耗防止を有
効に行なう。尚補強層（１０）はゴム単独層のほか織物
又は短繊維で補強されたゴム層が通常使用される。図に
おいて２１．２２はカーカスプライ、２′５はインナー
ライナー、２４はビードコア、２５はビードエイペック
スである。Next, when fitting the bead portion of the tire with the bead seat, the bottom of the bead is shaped into a centrally convex shape corresponding to the V-shape of the bead seat, taking into account adhesion, compressive strain, etc., as shown in Figure 2. is formed. In addition, a reinforcing layer (10) is arranged at the bead portion from the inside of the tire, extending over the area adjacent to the bead seat (5) and rim flange (9) to the top of the rim flange, which provides an air sealing effect and prevents wear of the bead portion. be carried out effectively. As the reinforcing layer (10), in addition to a single layer of rubber, a rubber layer reinforced with fabric or staple fibers is usually used. In the figure, 21 and 22 are carcass plies, 2'5 is an inner liner, 24 is a bead core, and 25 is a bead apex.
第３図は本発明の組立体を分割リムに適用した場合の実
施例の一部断面図を示す。ここで分割リム（１８）は内
側保持部Ｃ１６）と外側保持部（１７）の二重構造で構
成され、内側保持部（１６）の両端部に形設された内側
ビード座（１６ａ）上にビード部を載置し、しかる後外
側保持部（１８）の両端に形設された外側ビード座（１
８ａ）及びリムフランジＣ２５）がビードヒール部及び
ビード部外側面に密接するように前記内側保持部Ｃ１６
）と接合する。そこでビード部Ｃ２０）は突起部（１９
）とリムフランジ（１９）で挾持されるとともにビード
座のＶ字形状の効果で半径方向に締め付けられる為、ビ
ード部の保持は極めて強固となるとともに分割リムであ
る為リム組み作業も容易にできる。尚本発明は分割リム
に好適に採用しうるが上記実施例のほか種々の形状の分
割リムにも適用できることはいうまでもない。FIG. 3 shows a partial sectional view of an embodiment in which the assembly of the present invention is applied to a split rim. Here, the split rim (18) is composed of a double structure of an inner holding part C16) and an outer holding part (17), and is placed on inner bead seats (16a) formed at both ends of the inner holding part (16). The bead portion is placed on the outer bead seat (1) formed at both ends of the rear outer holding portion (18).
8a) and the rim flange C25) are in close contact with the bead heel portion and the outer surface of the bead portion.
) to join. Therefore, the bead portion C20) is
) and the rim flange (19), and is tightened in the radial direction by the V-shaped effect of the bead seat, so the bead part is held extremely firmly, and the split rim makes it easy to assemble the rim. . The present invention can be suitably applied to split rims, but it goes without saying that it can also be applied to split rims of various shapes in addition to the above embodiments.
し、かして本発明の組立体はビード部の締め付は効果を
高めるとともにピード座内側には突起部を形成したこと
によるビード部の横方向移動を固定する効果とも相俟っ
てリム外れ、空気漏れが防止でき、タイヤ外皮はリム上
に強固に固定保持される。However, in the assembly of the present invention, the tightening effect of the bead part is improved, and the protrusion formed on the inner side of the bead seat prevents the rim from coming off. , air leakage can be prevented, and the tire outer skin is firmly fixed and held on the rim.
第１図は従来の組立体の一部断面図、第２図及び第３図
は本発明の組立体の一部断面図を示す。
特許出願人 住友ゴム工業株式会社
代珊人 弁理士 伸 べ 義 平FIG. 1 shows a partial sectional view of a conventional assembly, and FIGS. 2 and 3 show partial sectional views of the assembly of the present invention. Patent Applicant: Sumitomo Rubber Industries, Ltd. Yosanhito Patent Attorney: Yoshihira Nobube
Claims (4)
ヤ外側から内側方向へ下降する傾斜を有する外備ビード
座と、ビードトウ部と密接する近傍で内側から外側方向
へ下降する傾斜を有する内側ビード座とから構成される
とともに、前記内側ビード座の内方端にはビード部の移
動を固定する為の円周方向突起部が形成されたリムに、
該リムの前記ビード座の形状ｔこ対応してビード底部を
凸状に形成したタイヤを嵌合してなるタイヤとリムの組
立体。(1) An external bead seat that has an inclination that descends from the outside of the tire toward the inside in the vicinity where the bead seat comes into close contact with the bead heel, and an inner bead seat that has an inclination that descends from the inside to the outside in the vicinity of where the bead toe comes into close contact with the tire. and a rim having a circumferential protrusion formed at the inner end of the inner bead seat for fixing movement of the bead portion;
A tire and rim assembly formed by fitting a tire with a bead bottom formed in a convex shape corresponding to the shape of the bead seat of the rim.
座全体の長さくＬｌの３０４−７０’ｌの範囲である特
許請求の範囲第１項記載の組立体。(2) The assembly according to claim 1, wherein the length (Ll) of the inner bead seat in the rotational axis direction is in the range of 304-70'l of the entire length of the bead seat (Ll).
線（財）となす角度は５°−４５°の範囲である特許請
求の範囲＠１項及び第２項記載の組立体。(3) The assembly according to claims 1 and 2, wherein the angle between the outer bead seat and the inner bead seat and a line parallel to the axis of rotation is in the range of 5° to 45°.
ェル深さくＤｌよりも小さく設定されている特許請求の
範囲第１項乃至第３項記載の組立体。(4) The assembly according to any one of claims 1 to 3, wherein the height h) of the protrusion from the upper end of the bead seat is set smaller than the rim well depth Dl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56102127A JPS584609A (en) | 1981-06-29 | 1981-06-29 | Assembly of tire and rim |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56102127A JPS584609A (en) | 1981-06-29 | 1981-06-29 | Assembly of tire and rim |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS584609A true JPS584609A (en) | 1983-01-11 |
Family
ID=14319112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56102127A Pending JPS584609A (en) | 1981-06-29 | 1981-06-29 | Assembly of tire and rim |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS584609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6554036B1 (en) * | 1998-01-20 | 2003-04-29 | Compagnie Générale des Etablissments Michelin & Cie | Simplification of mounting and demounting of a tire on and off its rim |
-
1981
- 1981-06-29 JP JP56102127A patent/JPS584609A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6554036B1 (en) * | 1998-01-20 | 2003-04-29 | Compagnie Générale des Etablissments Michelin & Cie | Simplification of mounting and demounting of a tire on and off its rim |
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