JPH05169901A - Disk wheel for automobile - Google Patents

Disk wheel for automobile

Info

Publication number
JPH05169901A
JPH05169901A JP3338260A JP33826091A JPH05169901A JP H05169901 A JPH05169901 A JP H05169901A JP 3338260 A JP3338260 A JP 3338260A JP 33826091 A JP33826091 A JP 33826091A JP H05169901 A JPH05169901 A JP H05169901A
Authority
JP
Japan
Prior art keywords
bead
rim
wheel
tire
automobile
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
Application number
JP3338260A
Other languages
Japanese (ja)
Inventor
Yoichi Shinagawa
洋一 品川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP3338260A priority Critical patent/JPH05169901A/en
Publication of JPH05169901A publication Critical patent/JPH05169901A/en
Pending legal-status Critical Current

Links

Landscapes

  • Tires In General (AREA)

Abstract

PURPOSE:To provide a disk wheel for an automobile in which the dislocation of the rim of a pneumatic tire can surely be prevented, and also the reduction in fittability of the tire can be prevented. CONSTITUTION:On the surface of a bead seat 1, a bandlike rough membrane layer 3 of 5mm or more in width and 20 to 40mum in thickness is formed in the region of 8mm in the radial direction on the inside of the rim from the inner end of the circular arc facing the bead heel. The coefficient of friction for the rough membrane layer 3 is made higher than that of the bead seat 1, and the rough membrane layers 3 are scatteredly provided in the circumferential direction of the wheel at one or more places by means of a partial printing method, coating baking method, or the like.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は制動時における空気入り
タイヤのリムずれを防止した自動車用ディスクホイール
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc wheel for an automobile, in which rim displacement of a pneumatic tire during braking is prevented.

【0002】[0002]

【従来の技術】従来、空気入りタイヤのリムずれ対策を
施した自動車用ディスクホイールとして、特開昭62−
275802号公報に示すものがある。この特開昭62
−275802号公報においては、図4に示すように、
リム10のビードシート1上のハンプPからフランジ2
に向かって少なくともビードシート1の最小径点Mまで
の領域Bに、ローレット加工を施してS25〜S70の
粗さにすることにより、制動時における空気入りタイヤ
のずれを防止している。
2. Description of the Related Art Conventionally, as a disk wheel for an automobile, which is provided with measures against a rim displacement of a pneumatic tire, there has been disclosed in Japanese Patent Laid-Open No.
There is one disclosed in Japanese Patent No. 275802. This JP-A-62
In Japanese Patent Publication No. 275802, as shown in FIG.
From the hump P on the bead seat 1 of the rim 10 to the flange 2
At least the region B of the bead seat 1 up to the minimum diameter point M is knurled to have a roughness of S25 to S70, thereby preventing the pneumatic tire from being displaced during braking.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、本発明
者がタイヤ嵌合時において空気入りタイヤのビードベー
スがホイールのビードシートに接触するときの接触圧分
布を詳細に測定した結果によると、その接触圧分布はハ
ンプの位置とは逆側のビードヒール側に集中している。
このため、上述した従来の自動車用ディスクホイールで
は空気入りタイヤのリムずれを防止する効果が不十分で
あった。また、ローレット加工の場合、ビードシート表
面が全周にわたって粗面加工されるため、タイヤ装着時
の嵌合性が通常のホイールに比べて低下し、しかも空気
漏れが発生しやすいという問題点があった。
However, according to the result of the detailed measurement by the present inventor of the contact pressure distribution when the bead base of the pneumatic tire comes into contact with the bead seat of the wheel at the time of fitting the tire, the contact is shown. The pressure distribution is concentrated on the bead heel side opposite to the hump position.
Therefore, the above-mentioned conventional automobile disc wheel has an insufficient effect of preventing the rim displacement of the pneumatic tire. Further, in the case of knurling, since the bead seat surface is roughened over the entire circumference, there is a problem that the fitting property at the time of tire mounting is lower than that of a normal wheel, and moreover, air leakage easily occurs. It was

【0004】本発明の目的は、空気入りタイヤのリムず
れを確実に防止できると共に、タイヤ嵌合性の低下を防
止できる自動車用ディスクホイールを提供することにあ
る。
An object of the present invention is to provide a disc wheel for an automobile, which can surely prevent rim displacement of a pneumatic tire and prevent deterioration of tire fitting property.

【0005】[0005]

【課題を解決するための手段】本発明に係る自動車用デ
ィスクホイールは、タイヤ装着用リムのビードシート表
面におけるビードヒール対応円弧の内端からリム内側の
ラジアル方向へ8mmの領域であって幅5mm以上に、
前記ビードシート表面よりも摩擦係数が高い粗膜層をホ
イール周方向に少なくとも1ヵ所以上点在させたことを
特徴とするものである。
DISCLOSURE OF THE INVENTION A disk wheel for an automobile according to the present invention is an area of 8 mm in the radial direction from the inner end of a bead heel corresponding arc on the bead seat surface of a tire mounting rim to the rim inner side and has a width of 5 mm or more. To
A rough film layer having a friction coefficient higher than that of the bead sheet surface is scattered in at least one place in the wheel circumferential direction.

【0006】本発明者は、タイヤ嵌合時において空気入
りタイヤのビードベースがホイールリムのビードシート
に接触するときの接触圧分布を測定したところ、この接
触圧分布は図3に示すようにビードシート1におけるビ
ードヒール対応円弧Rの内端eからリム内側へ8mmの
領域Aに集中するということを知見した。そこで、本発
明においては、ビードシート表面における上記接触圧分
布が集中する領域Aに、前記ビードシート表面よりも摩
擦係数が高い粗膜層を設ける。これにより、前記粗膜層
の摩擦係数に基づいて空気入りタイヤのリムずれを確実
に防止することができる。また、前記粗膜層はその形状
をラジアル方向に延びるはば5mm以上の帯状とし、ホ
イール周方向に1ヵ所以上点在させて設ける。このよう
に前記粗膜層を局所的に設けると、ローレット加工によ
りビードシート表面の全周にわたって粗面加工を施す場
合とは異なって、タイヤ装着時の嵌合性が低下すること
を防止でき、且つ空気漏れの発生を防止できる。
The present inventor measured the contact pressure distribution when the bead base of the pneumatic tire comes into contact with the bead seat of the wheel rim when the tire is fitted, and the contact pressure distribution is as shown in FIG. It was found that the sheet 1 concentrates in the region A of 8 mm from the inner end e of the bead heel corresponding arc R to the inner side of the rim. Therefore, in the present invention, a coarse film layer having a higher friction coefficient than that of the bead sheet surface is provided in the region A where the contact pressure distribution is concentrated on the bead sheet surface. As a result, it is possible to reliably prevent the rim displacement of the pneumatic tire based on the friction coefficient of the rough film layer. Further, the rough film layer is formed in a band shape having a width of 5 mm or more extending in the radial direction, and is provided at one or more locations in the wheel circumferential direction. By locally providing the rough film layer in this way, unlike the case where roughening is performed over the entire circumference of the bead sheet surface by knurling, it is possible to prevent the fitting property at the time of tire mounting from being lowered, Moreover, the occurrence of air leakage can be prevented.

【0007】前記粗膜層をホイール周方向に点在させて
設ける方法としては、膜厚管理可能な部分印刷法又は塗
装焼き付け法等がある。これらの方法においては、前記
粗膜層の形成材料として、砂又は貝殻等を粗い粉末状に
したものをマトリックス樹脂と共に使用することがで
き、これをビードシート表面に局所的に塗布して焼き付
ければよい。これにより、摩擦係数が高い粗膜層をホイ
ール周方向に点在させて設けることができる。
As a method for providing the rough film layer in a scattered manner in the wheel circumferential direction, there are a partial printing method and a paint baking method capable of controlling the film thickness. In these methods, as the material for forming the rough film layer, it is possible to use sand or shells in a coarse powder form together with a matrix resin, which is locally applied to the bead sheet surface and baked. Good. As a result, the rough film layers having a high friction coefficient can be provided scattered in the wheel circumferential direction.

【0008】また、本発明において、前記粗膜層の厚さ
が20μm未満であるとタイヤのリムずれ防止効果が不
十分になり、40μmを超えると前記粗膜層が前記ビー
ドシート表面から剥離しやすくなる。このため、前記粗
膜層の厚さは20〜40μmにすることが好ましい。
Further, in the present invention, if the thickness of the rough film layer is less than 20 μm, the effect of preventing the rim displacement of the tire becomes insufficient, and if it exceeds 40 μm, the rough film layer peels from the surface of the bead sheet. It will be easier. For this reason, the thickness of the rough film layer is preferably 20 to 40 μm.

【0009】[0009]

【実施例】以下、本発明の実施例について添付の図面を
参照して説明する。図1は本発明に係る自動車用ディス
クホイールのリム部の要部を切り欠いて示す斜視図、図
2はその断面図である。図1及び図2において、リム1
0のビードシート1の縁部にはフランジ2が設けられて
いる。このビードシート1及びフランジ2は空気入りタ
イヤのビードヒールR(例えば、JATMA規格で最大
6.5mm)に対応した円弧Rを介して一体成形されて
いる。ビードシート1の表面には、上記円弧Rの内端e
から8mmの領域に、ラジアル方向の長さが8mm、幅
が5mmであって厚さが20〜40μmの粗膜層3が形
成されている。この粗膜層3はビードシート1よりも摩
擦係数が高いものであって、部分印刷法又は塗装焼き付
け法等により貝殻等の粉末をマトリックス樹脂と共にビ
ードシート1の表面に塗布して焼き付けることにより、
ホイール周方向に点在させて1ヵ所以上設けることがで
きる。
Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a main portion of a rim portion of an automobile disc wheel according to the present invention with a cutaway view, and FIG. 2 is a sectional view thereof. 1 and 2, the rim 1
A flange 2 is provided on the edge portion of the bead sheet 1 of 0. The bead seat 1 and the flange 2 are integrally formed via an arc R corresponding to a bead heel R of a pneumatic tire (for example, maximum 6.5 mm in JATMA standard). On the surface of the bead sheet 1, the inner end e of the circular arc R is
The rough film layer 3 having a radial length of 8 mm, a width of 5 mm, and a thickness of 20 to 40 μm is formed in a region of 8 mm to 8 mm. This rough film layer 3 has a higher coefficient of friction than the bead sheet 1, and powders such as shells are applied to the surface of the bead sheet 1 together with a matrix resin by a partial printing method or a paint baking method, and baked.
It can be provided in one or more places scattered in the wheel circumferential direction.

【0010】本実施例のホイールによれば、領域Aに摩
擦係数が高い粗膜層3が設けられているため、このホイ
ールに装着される空気入りタイヤのビードベースがビー
ドシート1に接触するときの接触圧分布が、図3に示す
ようにビードヒール側に集中することによって、空気入
りタイヤのリムずれを確実に防止することができる。ま
た、粗膜層3はホイール周方向に点在しているため、タ
イヤ装着時の嵌合性が低下することがなく、且つ空気漏
れが発生することもない。
According to the wheel of this embodiment, since the rough film layer 3 having a high friction coefficient is provided in the area A, when the bead base of the pneumatic tire mounted on this wheel comes into contact with the bead seat 1. By concentrating the contact pressure distribution on the bead heel side as shown in FIG. 3, it is possible to reliably prevent the rim displacement of the pneumatic tire. Further, since the rough film layers 3 are scattered in the wheel circumferential direction, the fitting property at the time of tire mounting is not deteriorated, and air leakage does not occur.

【0011】実際に、自動車用ディスクホイールにタイ
ヤを装着し、空気圧を異ならせて、フランジ内端面から
の距離L(ビードヒールR5mmを含む)における接触
圧を測定したところ、下記表1及び表2の結果を得るこ
とができた。なお、図5及び図6はそれぞれ表1及び表
2に対応するものである。
Actually, a tire was mounted on an automobile disc wheel, the air pressure was varied, and the contact pressure at a distance L (including the bead heel R5 mm) from the inner end face of the flange was measured. The results are shown in Tables 1 and 2 below. I was able to get the result. 5 and 6 correspond to Table 1 and Table 2, respectively.

【0012】 [0012]

【0013】 これらの結果から明らかなように、種々の空気圧におい
てタイヤの接触圧は測定位置1〜5、即ちビードヒール
対応円弧の内端からリム内側のラジアル方向へ8mmの
領域に集中しており、タイヤの接触圧分布と粗膜層を設
けるべき領域とが一致していた。
[0013] As is clear from these results, the contact pressure of the tire at various air pressures is concentrated in the measurement positions 1 to 5, that is, in the region of 8 mm in the radial direction from the inner end of the arc corresponding to the bead heel to the inner side of the rim. The pressure distribution was in agreement with the area where the rough film layer was to be provided.

【0014】[0014]

【発明の効果】以上説明したように本発明によれば、ビ
ードシート表面におけるビードヒール対応円弧の内端か
らリム内側のラジアル方向へ8mmの領域であって幅5
mm以上に、前記ビードシート表面よりも摩擦係数が高
い粗膜層を設けたから、空気入りタイヤのリムずれを確
実に防止できる。また、前記粗膜層をホイール周方向に
点在させたから、タイヤ装着時の嵌合性が低下すること
を防止できる。
As described above, according to the present invention, an area of 8 mm in the radial direction from the inner end of the bead heel corresponding arc on the surface of the bead seat to the inner side of the rim and having a width of 5 mm.
Since the rough film layer having a friction coefficient higher than that of the bead sheet surface is provided in a size of mm or more, it is possible to reliably prevent the rim displacement of the pneumatic tire. Further, since the rough film layers are scattered in the wheel circumferential direction, it is possible to prevent deterioration of fitting property when the tire is mounted.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例に係る自動車用ディスクホイー
ルのリム部の要部を切り欠いて示す斜視図である。
FIG. 1 is a perspective view showing a main part of a rim portion of a disc wheel for an automobile according to an embodiment of the present invention with a cutaway view.

【図2】図1の自動車用ディスクホイールの要部を示す
断面図である。
FIG. 2 is a cross-sectional view showing a main part of the automobile disc wheel of FIG.

【図3】自動車用ディスクホイールにおけるタイヤの接
触圧を示す分布図である。
FIG. 3 is a distribution diagram showing a contact pressure of a tire in an automobile disc wheel.

【図4】従来の自動車用ディスクホイールの要部を示す
断面図である。
FIG. 4 is a sectional view showing a main part of a conventional automobile disc wheel.

【図5】自動車用ディスクホイールにおけるタイヤの接
触圧(空気圧:1.0kgf/cm2 )を示す分布図である。
FIG. 5 is a distribution diagram showing a contact pressure (air pressure: 1.0 kgf / cm 2 ) of a tire in an automobile disc wheel.

【図6】自動車用ディスクホイールにおけるタイヤの接
触圧(空気圧:2.0kgf/cm2 )を示す分布図である。
FIG. 6 is a distribution diagram showing a tire contact pressure (air pressure: 2.0 kgf / cm 2 ) in an automobile disc wheel.

【符号の説明】[Explanation of symbols]

1 ビードシート 2 フランジ 3 粗膜層 10 リム R ビードヒール対応円弧 e ビードヒール対応円弧の内端 1 Bead Sheet 2 Flange 3 Coarse Membrane Layer 10 Rim R Arc for Bead Heel e Inner End of Arc for Bead Heel

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 タイヤ装着用リムのビードシート表面に
おけるビードヒール対応円弧の内端からリム内側のラジ
アル方向へ8mmの領域であって幅5mm以上に、前記
ビードシート表面よりも摩擦係数が高い粗膜層をホイー
ル周方向に少なくとも1ヵ所以上点在させた自動車用デ
ィスクホイール。
1. A rough film having a friction coefficient higher than that of the bead seat surface in a region of 8 mm in the radial direction inside the rim from the inner end of the bead heel corresponding arc on the bead seat surface of the tire mounting rim and having a width of 5 mm or more. Disc wheels for automobiles in which layers are scattered in at least one place in the wheel circumferential direction.
JP3338260A 1991-12-20 1991-12-20 Disk wheel for automobile Pending JPH05169901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3338260A JPH05169901A (en) 1991-12-20 1991-12-20 Disk wheel for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3338260A JPH05169901A (en) 1991-12-20 1991-12-20 Disk wheel for automobile

Publications (1)

Publication Number Publication Date
JPH05169901A true JPH05169901A (en) 1993-07-09

Family

ID=18316447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3338260A Pending JPH05169901A (en) 1991-12-20 1991-12-20 Disk wheel for automobile

Country Status (1)

Country Link
JP (1) JPH05169901A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6814114B2 (en) * 2001-11-26 2004-11-09 Michelin Recherche Et Technique S.A. Tire to rim rotation limiter for a run-flat assembly
JP2009220695A (en) * 2008-03-17 2009-10-01 Washimaiyaa Kk Tire wheel assembly and rim assembling method therefor
CN103754061A (en) * 2014-01-10 2014-04-30 莹信工业股份有限公司 Bicycle tubular used Rim
US11465443B2 (en) * 2016-09-27 2022-10-11 Bridgestone Americas Tire Operations, Llc Wheel with bead locks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6814114B2 (en) * 2001-11-26 2004-11-09 Michelin Recherche Et Technique S.A. Tire to rim rotation limiter for a run-flat assembly
JP2009220695A (en) * 2008-03-17 2009-10-01 Washimaiyaa Kk Tire wheel assembly and rim assembling method therefor
CN103754061A (en) * 2014-01-10 2014-04-30 莹信工业股份有限公司 Bicycle tubular used Rim
US11465443B2 (en) * 2016-09-27 2022-10-11 Bridgestone Americas Tire Operations, Llc Wheel with bead locks

Similar Documents

Publication Publication Date Title
US6789591B2 (en) Pneumatic tire
US4305622A (en) Wire wheels sealing structure
JPH05169901A (en) Disk wheel for automobile
JP4188030B2 (en) Tire wheel
JP3881292B2 (en) N-order correction method for RRO of wheel rim
CA2083994A1 (en) Pneumatic safety tire
US3077219A (en) Sealing ring for tubeless tire
JP2733730B2 (en) Pneumatic tire
JP4188029B2 (en) Tire wheel
US6783343B2 (en) Two-piece retread envelope
JP2601308Y2 (en) Pneumatic tires for passenger cars
JP3330978B2 (en) Wheels for pneumatic tires
JPH07156616A (en) Bead section structure
JP4407018B2 (en) Pneumatic tire
JP4145206B2 (en) Tire uniformity measurement rim
USD1018442S1 (en) Tire sidewall
US4976498A (en) Wheel rim for a pneumatic tire
JPH05185811A (en) Pneumatic radial tire for heavy load
JP3104916B2 (en) wheel
JP2003170712A (en) Pneumatic tire
US5125446A (en) Reverse tire bead
JP3643148B2 (en) Radial tires with excellent wheel uniformity
JP2580180Y2 (en) Tire roller wheel structure
JP4642291B2 (en) Heavy duty radial tire
JPH11170813A (en) Pneumatic tire for heavy load