JPH01115704A - Low noise tyre wheel - Google Patents
Low noise tyre wheelInfo
- Publication number
- JPH01115704A JPH01115704A JP62271811A JP27181187A JPH01115704A JP H01115704 A JPH01115704 A JP H01115704A JP 62271811 A JP62271811 A JP 62271811A JP 27181187 A JP27181187 A JP 27181187A JP H01115704 A JPH01115704 A JP H01115704A
- Authority
- JP
- Japan
- Prior art keywords
- air
- tire
- vibrating membrane
- rim
- resonance
- 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
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 239000011324 bead Substances 0.000 claims abstract description 3
- 230000000452 restraining effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- WNKZOJNKBOBRAY-UHFFFAOYSA-N cdba Chemical compound O=CC1=CC=CC=C1.O1C(C(C2O)O)C(COC)OC2OC(C(C2O)O)C(COC)OC2OC(C(C2O)O)C(COC)OC2OC(C(C2O)O)C(COC)OC2OC(C(O)C2O)C(COC)OC2OC(C(C2O)O)C(COC)OC2OC2C(O)C(O)C1OC2COC WNKZOJNKBOBRAY-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007789 sealing Methods 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、振動乗心地性能の高い低騒音タイヤ車輪に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a low-noise tire wheel with high vibration riding comfort performance.
タイヤ車輪が路面の凹凸をひろい、これがサスペンショ
ンからボディを経て車室内に伝わり、振動、騒音が搭乗
者の聴覚に達する現象には、いわゆるハーシュネス（Ｈ
ａｒｓｈｎｅｓ ）のほか、ロードロア（Ｒｏａｄ
Ｒｏａｒ）とか、ロードランプル（Ｒｏａｄ Ｒｕｎ
ｂｌｅ）とも呼ばれるロードノイズ（Ｒｏａｄ Ｎｏ
１ｓｅ）があり、と（に後者は１００〜４００ Ｈｚの
周波数域にわたるが、乗用車用空気入りラジアルタイヤ
の場合にしばしば２５０ Ｈｚ近傍でロードノイズのピ
ークがあられれ振動乗心地性能を著しく害する。The so-called harshness (H
arshnes), as well as Road Loa (Road
Roar) or Road Run
Road noise (Road No. ble)
1se), and (the latter covers a frequency range of 100 to 400 Hz, but in the case of pneumatic radial tires for passenger cars, road noise often peaks around 250 Hz, which significantly impairs vibration ride quality.
このノイズのピークはタイヤ内面とリム外周との間の空
洞部内空気の共鳴により発生し、このノイズピークを低
く抑えることが振動乗心地性能の向上に有効である。This noise peak occurs due to the resonance of the air in the cavity between the inner surface of the tire and the outer periphery of the rim, and suppressing this noise peak to a low level is effective in improving the vibration riding comfort performance.
（従来の技術）
タイヤの空洞部内空気の共鳴を抑制する技術として特開
昭６２−５０２０３号公報には、タイヤの空洞部に共鳴
阻止材を封入して空気振動の伝播を抑えることが開示さ
れている。(Prior Art) As a technique for suppressing the resonance of the air in the cavity of a tire, Japanese Patent Application Laid-Open No. 62-50203 discloses a technique for suppressing the propagation of air vibrations by sealing a resonance blocking material in the cavity of the tire. ing.
（発明が解決しようとする問題点）
この技術はタイヤの空洞部内空気の共鳴を抑制するのに
有効であるが、共鳴阻止材がタイヤ転勤時の遠心力及び
接地時のタイヤの変形により、変形を繰り返し破壊をお
こすため、耐久性が劣るところに問題を残していた。(Problems to be Solved by the Invention) This technology is effective in suppressing the resonance of the air inside the tire cavity, but the resonance suppressing material deforms due to centrifugal force during tire transfer and deformation of the tire when touching the ground. The problem was that the durability was poor due to repeated damage.
またタイヤ内面に吸音層を設けることも有効であるが、
タイヤの運動性能に悪影響を及ぼすことが多い。It is also effective to provide a sound absorbing layer on the inner surface of the tire.
This often has a negative effect on the tire's driving performance.
そこで、この発明はタイヤの空洞部内空気の共鳴を抑制
した、耐久性の高い低騒音タイヤ車輪を提供することが
目的である。Therefore, it is an object of the present invention to provide a highly durable, low-noise tire wheel that suppresses the resonance of the air within the cavity of the tire.
（問題点を解決するための手段）
この発明は、タイヤ空洞部内の音波の共振エネルギーを
、タイヤの空気充てん部に設けた振動膜の運動エネルギ
ーに変換することにより、タイヤ内空焦光てん部での共
振の発生を抑制するものである。(Means for Solving the Problems) This invention converts the resonance energy of sound waves in the tire cavity into kinetic energy of a vibrating membrane provided in the air-filled part of the tire. This suppresses the occurrence of resonance.
すなわちこの発明は、中空トロイド状をなすゴムタイヤ
と、このゴムタイヤのビード部を抑制するフランジをも
つリムとの組立体からなり、ゴムタイヤ内側の空気充て
ん部を振動膜にて区画してなる低騒音タイヤ車輪である
。That is, the present invention provides a low-noise tire consisting of an assembly of a hollow toroid-shaped rubber tire and a rim having a flange for suppressing the bead portion of the rubber tire, and in which the air-filled portion inside the rubber tire is divided by a vibrating membrane. It's a wheel.
この発明における振動膜は振動しやすい物質、例えばゴ
ムなどからなる膜で、振動膜を仕切りとして空気充てん
部をタイヤ内壁及び振動膜で囲まれる層と振動膜および
リムで囲まれる層とに区画することが望ましい。The diaphragm in this invention is a membrane made of a material that vibrates easily, such as rubber, and uses the diaphragm as a partition to divide the air-filled portion into a layer surrounded by the inner wall of the tire and the diaphragm, and a layer surrounded by the diaphragm and the rim. This is desirable.
さらに振動膜は下記式（１）に従う共振周波数ｆが下記
式（２）を満足することが好ましい。Furthermore, it is preferable that the resonant frequency f of the vibrating membrane satisfies the following formula (2) according to the following formula (1).
記
ここで Ｃ：タイヤ内の音速（ｍ／Ｓ）Ｍ：振動膜の面
密度（ｋｇ ／ｍ２）
Ｌ：振動膜とリムとに挟まれた空気層
厚（ｍ）
ρ；空気焦光ん部の空気密度（ｋｇ ／ｍ３）Ｃ／Ｌ≦
ｆ≦Ｃ／ｌ ・・・・・・（２）ここで Ｌ：
タイヤのトレッド中心部での周長（ｍ）
２：リムウェル部の周長（ｍ）
また実施に当り、振動膜に開口部を設けることが有利で
あり、この際振動膜とリムとに挟まれる空間は下記式（
３）に従う共振周波数ｆが上記式（２）を満足すること
が好ましい。Where: C: Speed of sound inside the tire (m/S) M: Areal density of the diaphragm (kg/m2) L: Thickness of the air layer sandwiched between the diaphragm and the rim (m) ρ: Air focusing area Air density (kg/m3) C/L≦
f≦C/l (2) where L:
Circumference at the center of the tire tread (m) 2: Circumference at the rim well (m) In addition, it is advantageous to provide an opening in the diaphragm during implementation, which is sandwiched between the diaphragm and the rim. The space is expressed by the following formula (
It is preferable that the resonant frequency f according to 3) satisfies the above formula (2).
記
ここで ■；リムと振動膜とに挟まれた空間゛の体積（
ｍ３）
Ｓ：開口部の面積（複数の場合は総和、ｍｚ）
ｄ：開口部の径（ｍ）
ｔ：振動膜厚（ｍ）
さて第１図に、この発明に従うタイヤ車輪の断面を示し
、図中１はタイヤ、２はそのトレッド、３はリム、４は
タイヤ内側の空気充てん部、５は空気充てん部４を２室
に区画する振動膜、そして６はリム３と振動膜５とに囲
まれた空気層である。Note: ■; The volume of the space sandwiched between the rim and the diaphragm (
m3) S: Area of the opening (total if multiple, mz) d: Diameter of the opening (m) t: Vibration membrane thickness (m) Now, Fig. 1 shows a cross section of the tire wheel according to the present invention, In the figure, 1 is the tire, 2 is the tread, 3 is the rim, 4 is the air-filled part inside the tire, 5 is the vibrating membrane that divides the air-filled part 4 into two chambers, and 6 is the rim 3 and the vibrating membrane 5. It is an enclosed space of air.
また第２図ないし第５図に、この発明に従うタイヤ車輪
の別態様を示す。Further, FIGS. 2 to 5 show other embodiments of the tire wheel according to the present invention.
第２図は第１図の空気層６全体を振動Ｉｌ＊５で囲んだ
もの、第３図は振動膜５にて区画される空気Ｎ６の体積
を増大させたもの、第４図は第３図の空気層６全体を振
動膜５で囲んだものおよび、第５図は第１図における振
動）ＩＩ ５に開口部７を設けたもの、をそれぞれ示し
た。なお第６図に第５図のタイヤ車輪のタイヤ装着前の
ホイールを示す。Fig. 2 shows the entire air layer 6 in Fig. 1 surrounded by vibration Il*5, Fig. 3 shows an enlarged volume of the air N6 partitioned by the vibrating membrane 5, and Fig. 4 shows the air layer 6 surrounded by vibration Il*5. In the figure, the entire air layer 6 is surrounded by a vibrating membrane 5, and in FIG. Note that FIG. 6 shows the tire wheel of FIG. 5 before the tire is mounted.
（作 用）
タイヤの空洞部内空気の共鳴において騒音上問題となる
のは、タイヤの接地側とこれと車軸をはさみ対向する上
部側とで音圧が逆位相となる１次の共鳴である。(Function) A noise problem in the resonance of the air inside the tire cavity is the first-order resonance in which the sound pressure is in opposite phase between the ground contact side of the tire and the upper side that faces the axle.
この発明は、タイヤ内空焦光てん部に可動な膜状構造物
、すなわち振動膜を設けることにより、空気充てん部内
の音波のエネルギーを振動膜の運動エネルギーに変換し
、さらにこれを熱エネルギーに変換することにより、空
気充てん部内での共振を抑制するものである。This invention converts the energy of sound waves in the air-filled portion into kinetic energy of the vibrating membrane by providing a movable membrane-like structure, that is, a vibrating membrane, in the air-filled part of the tire, and further converts this into thermal energy. This conversion suppresses resonance within the air-filled portion.
なお振動膜は上記した式（１）に従う共振周波数ｆで、
共振する。この周波数を、タイヤ内空焦光てん部の共振
周波数に近付けることにより、より一層の効果が得られ
る。Note that the vibrating membrane has a resonant frequency f according to the above equation (1),
resonate. By bringing this frequency close to the resonant frequency of the in-tire air focusing beam, even greater effects can be obtained.
また、振動膜により仕切られた振動膜とリムとで囲まれ
る空間は１．振動膜に適当な開口部を設けた場合、上記
した式（３）に従う共振周波数ｆを持つこの共振周波数
を、タイヤ内空気層てん部の共振周波数に近付けること
により、−層の効果が得られる。Moreover, the space surrounded by the vibrating membrane and the rim partitioned by the vibrating membrane is 1. When an appropriate opening is provided in the diaphragm, the effect of the -layer can be obtained by bringing the resonance frequency f, which has a resonance frequency according to the above equation (3), close to the resonance frequency of the air layer in the tire. .
（実施例）
裏庭皿上
第１図に示した構造に従い、厚さ３ｍｍ、幅６０ＩＩＩ
Ｉ１１のゴム膜（ｆ ＝２８０ Ｈｚ ）をそなえる５
′ＡＪＸ１４のリムに、１９５ ／６０Ｒ１４の空気入
りラジアルタイヤを組み込んだ実施例と、同種タイヤ及
び同サイズのリムからなる比較例とに対して車室内騒音
テストを行った結果について第７図に示す。(Example) Backyard plate according to the structure shown in Figure 1, thickness 3mm, width 60III
5 with a rubber film of I11 (f = 280 Hz)
Figure 7 shows the results of a vehicle interior noise test conducted on an example in which a 195/60R14 pneumatic radial tire was incorporated into an AJX14 rim, and a comparative example consisting of the same type of tire and rim of the same size. .
車室内騒音テストは、ロードノイズ路６０ ｋｍ ／
ｈ定常走行時の運転者の左側耳元音番計測したものであ
る。また、タイヤの内圧は１．９ ｋｇ／ｃｍ”である
。In-vehicle noise test: road noise road 60km/
h This is the sound number measured at the driver's left ear during steady driving. Furthermore, the internal pressure of the tire is 1.9 kg/cm''.
同図から、２４０Ｈｚおよび２６０ Ｈｚ付近にあらね
れる空気の共鳴による騒音ピークが実施例ではあられれ
ていないことがわかる。It can be seen from the figure that the noise peaks due to air resonance that occur near 240 Hz and 260 Hz are not observed in the example.
尖施開ｌ
第５図に示した構造に従い、幅６０ｍｍ、厚さ３ｍｍで
直径２ｍｍの穴を２０個あけたゴム膜をそなえる、５！
４ＪＸ１４のリムに、１９５ ／６０Ｒ１４の空気入り
ラジアルタイヤを組み込んだ実施例と、同種タイヤ及び
サイズのリムからなる比較例とに対して実施例１と同様
の車室内騒音テストを行った結果について第８図に示す
。なお、ゴム膜とリムとで囲まれる空気層の共振周波数
ｒは２５０ Ｈｚとした。Point opening l According to the structure shown in Figure 5, a rubber membrane with a width of 60 mm, a thickness of 3 mm, and 20 holes of 2 mm in diameter is provided, 5!
This section describes the results of a vehicle interior noise test similar to Example 1 for an example in which a 195/60R14 pneumatic radial tire was incorporated into a 4JX14 rim, and a comparative example consisting of the same type of tire and rim size. Shown in Figure 8. Note that the resonance frequency r of the air layer surrounded by the rubber film and the rim was 250 Hz.
同図から、比較例では、２４０ 、２６０ Ｈｚ付近に
現れるピークが、実施例では現れないことがわかる。From the figure, it can be seen that the peaks that appear around 240 and 260 Hz in the comparative example do not appear in the example.
（発明の効果）
この発明によれば、ロードノイズのうちとくに車体に関
しては対策不可能な、タイヤ空洞部内空気の共振に起因
するロードノイズのピークを、タイヤ運動性能を損ねる
ことなく高耐久性の下で消滅させることができる。(Effects of the Invention) According to the present invention, the peak of road noise caused by the resonance of the air inside the tire cavity, which cannot be countermeasured especially for the vehicle body, can be suppressed by a highly durable system without impairing the tire motion performance. It can be destroyed at the bottom.
第１図ないし第５図はこの発明に従うタイヤ車輪の断面
図、
第６図は第５図のホイールの斜視図、
第７図および第８図は車室内騒音テストの結果を示すグ
ラフである。
１・・・ゴムタイヤ ２・・・トレッド３・・・
リム ４・・・空気層てん部５・・・振動
膜 ６・・・空気層７・・・開口部
特許出願人 株式会社ブリヂストン
スト
音圧ＣｄＢＡ）1 to 5 are cross-sectional views of a tire wheel according to the present invention, FIG. 6 is a perspective view of the wheel shown in FIG. 5, and FIGS. 7 and 8 are graphs showing the results of a vehicle interior noise test. 1...Rubber tire 2...Tread 3...
Rim 4... Air layer Top 5... Vibration membrane 6... Air layer 7... Opening Patent applicant: Bridgestone Strike Co., Ltd. Sound pressure CdBA)
Claims (1)
ヤのビード部を抑制するフランジをもつリムとの組立体
からなり、ゴムタイヤ内側の空気充てん部を振動膜にて
区画してなる低騒音タイヤ車輪。1. A low-noise tire wheel consisting of an assembly of a hollow toroid-shaped rubber tire and a rim having a flange that suppresses the bead portion of the rubber tire, and the air-filled portion inside the rubber tire is divided by a vibrating membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62271811A JPH01115704A (en) | 1987-10-29 | 1987-10-29 | Low noise tyre wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62271811A JPH01115704A (en) | 1987-10-29 | 1987-10-29 | Low noise tyre wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01115704A true JPH01115704A (en) | 1989-05-09 |
Family
ID=17505180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62271811A Pending JPH01115704A (en) | 1987-10-29 | 1987-10-29 | Low noise tyre wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01115704A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031805U (en) * | 1989-05-29 | 1991-01-10 | ||
| EP1055527A1 (en) * | 1999-05-20 | 2000-11-29 | Ford Global Technologies, Inc. | Wheel rim |
| WO2004074012A1 (en) * | 2003-02-21 | 2004-09-02 | The Yokohama Rubber Co.,Ltd. | Tire/wheel assembly body and interior body for noise reduction |
| WO2007002479A2 (en) | 2005-06-24 | 2007-01-04 | Tire Acoustics, Llc | Tire and wheel noise reducing device and system |
| JPWO2005047023A1 (en) * | 2003-11-12 | 2007-05-31 | 横浜ゴム株式会社 | Tire and wheel assembly |
| JP2008279873A (en) * | 2007-05-10 | 2008-11-20 | Honda Motor Co Ltd | Vehicle wheel |
| US9389380B2 (en) | 2011-05-31 | 2016-07-12 | Konica Minolta, Inc. | Optical fiber assembly, optical probe, and method for manufacturing optical fiber assembly |
-
1987
- 1987-10-29 JP JP62271811A patent/JPH01115704A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031805U (en) * | 1989-05-29 | 1991-01-10 | ||
| EP1055527A1 (en) * | 1999-05-20 | 2000-11-29 | Ford Global Technologies, Inc. | Wheel rim |
| US6390563B1 (en) | 1999-05-20 | 2002-05-21 | Ford Global Technologies, Inc. | Sound reducing wheel rim |
| CN100357116C (en) * | 2003-02-21 | 2007-12-26 | 横滨橡胶株式会社 | Tire/wheel assembly body and interior body for noise reduction |
| WO2004074012A1 (en) * | 2003-02-21 | 2004-09-02 | The Yokohama Rubber Co.,Ltd. | Tire/wheel assembly body and interior body for noise reduction |
| US7475713B2 (en) | 2003-02-21 | 2009-01-13 | The Yokohama Rubber Co., Ltd. | Tire/wheel assembly and noise reduction interior member |
| JPWO2005047023A1 (en) * | 2003-11-12 | 2007-05-31 | 横浜ゴム株式会社 | Tire and wheel assembly |
| JP4657925B2 (en) * | 2003-11-12 | 2011-03-23 | 横浜ゴム株式会社 | Tire and wheel assembly |
| WO2007002479A2 (en) | 2005-06-24 | 2007-01-04 | Tire Acoustics, Llc | Tire and wheel noise reducing device and system |
| US7740035B2 (en) | 2005-06-24 | 2010-06-22 | Tire Acoustics, Llc | Tire and wheel noise reducing device and system |
| US8196628B2 (en) | 2005-06-24 | 2012-06-12 | Tire Acoustics, Llc | Tire and wheel noise reducing device and system |
| JP2008279873A (en) * | 2007-05-10 | 2008-11-20 | Honda Motor Co Ltd | Vehicle wheel |
| JP4551422B2 (en) * | 2007-05-10 | 2010-09-29 | 本田技研工業株式会社 | Vehicle wheel |
| US9389380B2 (en) | 2011-05-31 | 2016-07-12 | Konica Minolta, Inc. | Optical fiber assembly, optical probe, and method for manufacturing optical fiber assembly |
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