JPH0214901A - Pneumatic tire for car and manufacture thereof - Google Patents
Pneumatic tire for car and manufacture thereofInfo
- Publication number
- JPH0214901A JPH0214901A JP1104781A JP10478189A JPH0214901A JP H0214901 A JPH0214901 A JP H0214901A JP 1104781 A JP1104781 A JP 1104781A JP 10478189 A JP10478189 A JP 10478189A JP H0214901 A JPH0214901 A JP H0214901A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- pneumatic tire
- tread
- surface roughness
- pneumatic
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 230000003746 surface roughness Effects 0.000 claims abstract description 11
- 239000011324 bead Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 239000003380 propellant Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0318—Tread patterns irregular patterns with particular pitch sequence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はタイヤビードを有するカーカス、側壁部、パ
ターンを設けた補強トレッド条片とから成る車両用空気
タイヤに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pneumatic vehicle tire comprising a carcass with tire beads, sidewalls and patterned reinforcing tread strips.
車両タイヤは接触面上を転動するとき騒音を出す。とい
うのは車両タイヤはたとえばそのパターン要素の縁部で
転勤面を打つからである。更にパターン要素及び自由な
中空間、たとえば溝から成るタイヤ接触面内には空気振
動が生じる。特に白色絡線によって書き換えられたトロ
イダル体の凸部の領域ではタイヤはパターン要素、溝、
他の切り込み部、タイヤの周辺が音圧の発生に決定的と
なるこの音圧は車両用の空気タイヤの周囲で騒音として
認められる。音圧は測定可能である。特にタイヤ騒音が
入っている車両の騒音発散は可能な限り低く抑えるべき
である。Vehicle tires make noise as they roll over contact surfaces. This is because the vehicle tire hits the transfer surface, for example, at the edge of the pattern element. Furthermore, air vibrations occur within the tire contact surface, which consists of pattern elements and free hollow spaces, such as grooves. In particular, in the region of the convex part of the toroidal body rewritten by the white connecting line, the tire has pattern elements, grooves,
Other notches, such as the periphery of the tire, are decisive for the generation of sound pressure.This sound pressure is recognized as noise around the pneumatic tires for vehicles. Sound pressure can be measured. Vehicle noise emissions, especially those with tire noise, should be kept as low as possible.
騒音は多かれ少なかれタイヤのパターン構成に影響され
る。タイヤ騒音を減らすために、いろいろな努力が払わ
れてきた。その内特記すべきは米国特許２２７２８７９
．３０２３７８９及び西ドイツ公開第２５３６４７０号
等である。特に、パターン化のタイヤ周縁への分割であ
る、パターン分割策は、従来通りタイヤ騒音を減らすた
めの適当な手段である。Noise is influenced to a greater or lesser extent by the tire pattern configuration. Various efforts have been made to reduce tire noise. Of these, noteworthy is US Patent No. 2,272,879.
．． 3023789 and West German Publication No. 2536470. In particular, pattern segmentation strategies, the division of patterning into the tire periphery, are conventionally suitable means for reducing tire noise.
この発明の基本課題は、タイヤ表面の少なくとも一部或
いは問題になる全体が該当する騒音の発生を減少させる
ためのパターン化とパターン分割とは無関係の適当な対
策を擾供することにある。The basic problem of the invention is to provide suitable measures, independent of patterning and pattern division, in order to reduce the generation of noise in which at least a part of the tire surface or the entirety of the tire surface in question is affected.
この発明はこの課題を次のようにして解決する即ち特に
トレッドの領域のタイヤ表面の一部の平均的粗さを１０
０μｍ以上とする。更にトレンドの一部或いは全部また
は／及びタイヤ肩部、側壁部も前記の表面粗さにする。The invention solves this problem by reducing the average roughness of a part of the tire surface, especially in the area of the tread, to 10
It shall be 0 μm or more. Further, part or all of the trend and/or the tire shoulder and side wall are also made to have the above-mentioned surface roughness.
以上に記載した表面粗さは特に１００μｍ〜２０００μ
讃が良い。このような意識的に企て意図した平均的粗さ
は比較的粗面深度の浅い工学的に滑らかな表面を有する
タイヤと比較して音圧水準をはっきり低下させる。粗さ
ピーク間の多数の微小自由空間であるより大きい粗さの
影響は当該のタイヤの面で散乱する音波反射から生じる
。The surface roughness described above is particularly 100 μm to 2000 μm.
Good praise. This deliberately designed average roughness significantly reduces sound pressure levels compared to tires with engineered smooth surfaces with relatively shallow roughness depths. The larger roughness effect, which is the large number of small free spaces between the roughness peaks, results from sound wave reflections scattered at the surface of the tire in question.
ここでは、特にタイヤとパターン溝の包絡線によって関
係ができるタイヤ表面の体積を取り上げなければならな
い、これらの体積はそれぞれの接触面に含まれている。Here, we have to deal in particular with the volumes of the tire surface that can be related by the envelopes of the tire and the patterned grooves, which volumes are included in the respective contact surfaces.
作用は散乱する音波反射に対応する音響吸収によって生
じる。The effect is caused by acoustic absorption corresponding to scattered acoustic reflections.
その上、転勤面とタイヤ要素の間に落ち込んだ空気は容
易に漏れ、タイヤの騒音を減らすのに役立つ。Moreover, the air trapped between the rolling surface and the tire element easily leaks out, which helps reduce tire noise.
粗さは加熱金型の製造の際に得られる型表面の粗さによ
って得られる。ここで噴射法による製造粗さと後の粗化
とを区別する。しかしタイヤも粗（することができる。The roughness is obtained by the roughness of the mold surface obtained during the production of the heating mold. Here, we distinguish between roughness produced by the injection method and roughening afterward. But tires can also be rough.
この場合噴射法が適用可能である。この方法によって縁
の鋭い粗材を用いて粗さ深度が決められる。In this case, the injection method is applicable. This method determines the roughness depth using rough edges with sharp edges.
以上はガラス粉末またはガラス粒吹きっけ法、砂噴射法
、マイクロ電子法或いは類憤の方法によって行うことが
できる。The above can be carried out by a glass powder or glass particle blowing method, a sand blasting method, a microelectronic method, or a similar method.
一実施例を示した図により更に詳記する。This will be described in more detail with reference to figures showing one embodiment.
タイヤ１は二個のタイヤビード４を有するカーカス３、
側壁部５、パターン化したトレッド条片６から成る。７
は片側の側壁′部からトレッドを経て反対側の側壁部名
の領域を被う包路線を示す。The tire 1 has a carcass 3 having two tire beads 4,
The sidewalls 5 consist of patterned tread strips 6. 7
indicates an envelope line that extends from the sidewall section on one side, passes through the tread, and covers the area named on the sidewall section on the opposite side.
この包絡線はほぼ片側のタイヤ側面１０から反対側のタ
イヤ側面１０の中心切断高Ｓまで延在している。包路線
はトレッド８、両方のタイヤ肩部９及びタイヤ側面ＩＯ
に係わる。This envelope extends approximately from one tire side surface 10 to the center cutting height S of the opposite tire side surface 10. The envelope line is tread 8, both tire shoulders 9 and tire side IO
related to.
これらのタイヤ表面はたとえばガラスのような縁の鋭い
噴射材を用いる加熱金型の空気噴射処理によって所望の
平均的表面粗度がたとえば３００μｍになる、第２図の
詳細図で粗度深度尖端１１と粗度深度谷部１２が判る。These tire surfaces are heated to a desired average surface roughness of, for example, 300 .mu.m by air blasting in a heated mold using a sharp-edged blasting material, such as glass, with a roughness depth peak 11 in the detailed view of FIG. The roughness depth valley 12 can be seen.
微小自由空間１３には散乱する音波反射が起こる。それ
がトレッド８と転勤面２との接触の際に音響吸収と従っ
てまた明白な音響水準降下となる。Ｒは粗度深度を表すScattered sound wave reflections occur in the minute free space 13. Upon contact between the tread 8 and the transfer surface 2, this results in sound absorption and thus also a noticeable sound level drop. R represents roughness depth
第１図はタイヤの部分横断面図、第２図は粗性箇所の拡
大図である。
図中符号
ｌ・・・タイヤ、２・・・転勤面、３・・・カーカス、
４・・・タイヤビード、５・・・側壁部６・・・トレッ
ド条片、７・・・包絡線、８・・・トレッド、９・・・
タイヤ肩部、１０・・・側壁部領域、１１・・・粗度深
度尖端、１２粗度深度谷部、１３・・・微小自由空間、
Ｒ・・粗度深度。FIG. 1 is a partial cross-sectional view of the tire, and FIG. 2 is an enlarged view of rough areas. Symbol l in the figure: Tire, 2: Transfer surface, 3: Carcass,
4... Tire bead, 5... Side wall portion 6... Tread strip, 7... Envelope, 8... Tread, 9...
Tire shoulder, 10... Side wall region, 11... Roughness depth tip, 12 Roughness depth valley, 13... Minute free space,
R...Roughness depth.
Claims (1)
を設けた補強トレッド条片とから成る車両用空気タイヤ
において、トレッド（８）の領域にあるタイヤ表面の少
なくとも一定であるが選択できる部分の表面粗さが１０
０μｍ以上であることを特徴とする車両用空気タイヤ。 ２）トレッド（８）全体の表面粗さが１００μｍ以上で
ある、請求項１）記載の車両用空気タイヤ。 ３）タイヤ肩部（９）の表面も表面粗さが１００μｍ以
上である、請求項１）または２）記載の車両用空気タイ
ヤ。 ４）上部側壁部（５）も表面粗さが１００μｍ以上であ
る、請求項１）〜３）の何れか一記載の車両用空気タイ
ヤ。 ５）表面粗さが１００μｍ〜２０００μｍである請求項
１）〜４）の何れか一記載の車両用空気タイヤ。 ６）タイヤビードを有するカーカス、側壁部、パターン
を設けた補強トレッド条片とから成る車両用空気タイヤ
であって、トレッド（８）の領域にあるタイヤ表面の少
なくとも一定であるが選択できる部分の表面粗さが１０
０μｍ以上である車両用空気タイヤを製造する方法にお
いて、加熱金型中でタイヤ（１）の表面を１００μｍ以
上にすることを特徴とする方法。 ７）タイヤ（１）を縁の鋭い噴射材を用いる空気噴射に
より二次処理する、請求項６）記載の方法。Claims: 1) A pneumatic tire for a vehicle consisting of a carcass with tire beads, a sidewall and a reinforcing tread strip with a pattern, at least a constant portion of the tire surface in the area of the tread (8). Surface roughness of selectable part is 10
A pneumatic tire for a vehicle characterized by having a particle size of 0 μm or more. 2) The pneumatic tire for a vehicle according to claim 1), wherein the entire tread (8) has a surface roughness of 100 μm or more. 3) The pneumatic tire for a vehicle according to claim 1) or 2), wherein the surface of the tire shoulder (9) also has a surface roughness of 100 μm or more. 4) The pneumatic tire for a vehicle according to any one of claims 1) to 3), wherein the upper side wall portion (5) also has a surface roughness of 100 μm or more. 5) The pneumatic tire for a vehicle according to any one of claims 1) to 4), which has a surface roughness of 100 μm to 2000 μm. 6) A pneumatic tire for a vehicle consisting of a carcass with tire beads, a sidewall and a reinforcing tread strip with a pattern, comprising at least a constant but selectable portion of the tire surface in the area of the tread (8). Surface roughness is 10
A method for manufacturing a pneumatic vehicle tire having a thickness of 0 μm or more, characterized in that the surface of the tire (1) is made to be 100 μm or more in a heated mold. 7) Process according to claim 6, characterized in that the tire (1) is subjected to secondary treatment by pneumatic injection using a sharp-edged propellant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3813954A DE3813954A1 (en) | 1988-04-26 | 1988-04-26 | VEHICLE TIRES |
| DE3813954.5 | 1988-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214901A true JPH0214901A (en) | 1990-01-18 |
Family
ID=6352852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1104781A Pending JPH0214901A (en) | 1988-04-26 | 1989-04-26 | Pneumatic tire for car and manufacture thereof |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0214901A (en) |
| DE (1) | DE3813954A1 (en) |
| FR (1) | FR2630374B1 (en) |
| GB (1) | GB2219557B (en) |
| IT (2) | IT1229094B (en) |
| SE (1) | SE468163B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160311268A1 (en) * | 2013-12-18 | 2016-10-27 | Bridgestone Americas Tire Operations, Llc | Tires and other objects having an aerodynamic/hydrodynamic surface treatment |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4114279C2 (en) * | 1991-05-02 | 1994-09-15 | Continental Ag | Vehicle tires with tread grooves |
| FR2796005A1 (en) | 1999-07-07 | 2001-01-12 | Michelin Soc Tech | Pneumatic tyre has tread with reinforcing fabric(s) having parallel reinforcement members at angle to circumferential direction and layer(s) of spirally wound textile reinforcements in circumferential direction |
| CA2324807A1 (en) * | 1999-11-05 | 2001-05-05 | Sumitomo Rubber Industries, Ltd. | Studless tire with radially directed short fibers |
| JP6088137B2 (en) * | 2011-12-28 | 2017-03-01 | 株式会社ブリヂストン | Tire and tire mold |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB443862A (en) * | 1935-01-15 | 1936-03-09 | Dunlop Rubber Co | Improvements in cycle and other types |
| GB565477A (en) * | 1942-03-18 | 1944-11-13 | Firestone Tire & Rubber Co | Improvements in or relating to vehicle tires |
| DE1480959A1 (en) * | 1965-10-16 | 1970-03-26 | Continental Gummi Werke Ag | Pneumatic tires for motor vehicles |
| DE1959194A1 (en) * | 1969-11-25 | 1971-04-29 | Semperit Ag | tire |
| GB1388534A (en) * | 1971-08-23 | 1975-03-26 | Goodrich Co B F | Tyre having a reduced capacity for picking up mud |
| SE412188B (en) * | 1978-07-10 | 1980-02-25 | Ifm Akustikbyran Ab | VEHICLE Tires WHERE TREATMENT SHOWS A DIFFERENT AIR PERSPECTIVE CHANNELS OR PORTS, AND PROCEDURE FOR PREPARING THE TIRE |
| DE3703480A1 (en) * | 1986-02-05 | 1987-08-06 | Bridgestone Corp | TIRE |
-
1988
- 1988-04-26 DE DE3813954A patent/DE3813954A1/en not_active Withdrawn
-
1989
- 1989-04-04 IT IT8920004A patent/IT1229094B/en active
- 1989-04-04 IT IT8920850U patent/IT8920850V0/en unknown
- 1989-04-10 GB GB8908002A patent/GB2219557B/en not_active Expired - Fee Related
- 1989-04-21 SE SE8901457A patent/SE468163B/en not_active IP Right Cessation
- 1989-04-24 FR FR898905404A patent/FR2630374B1/en not_active Expired - Fee Related
- 1989-04-26 JP JP1104781A patent/JPH0214901A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160311268A1 (en) * | 2013-12-18 | 2016-10-27 | Bridgestone Americas Tire Operations, Llc | Tires and other objects having an aerodynamic/hydrodynamic surface treatment |
| US10696104B2 (en) * | 2013-12-18 | 2020-06-30 | Bridgestone Americas Tire Operations, Llc | Tires and other objects having an aerodynamic/hydrodynamic surface treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1229094B (en) | 1991-07-18 |
| IT8920850V0 (en) | 1989-04-04 |
| IT8920004A0 (en) | 1989-04-04 |
| SE8901457L (en) | 1989-10-27 |
| GB2219557A (en) | 1989-12-13 |
| SE8901457D0 (en) | 1989-04-21 |
| DE3813954A1 (en) | 1989-11-09 |
| GB2219557B (en) | 1993-04-21 |
| GB8908002D0 (en) | 1989-05-24 |
| SE468163B (en) | 1992-11-16 |
| FR2630374A1 (en) | 1989-10-27 |
| FR2630374B1 (en) | 1994-06-17 |
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