• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This invention reduce road noise, reduce noise inside the car, reduce weight and reduce energy consumption of the car. The life of the rim is the same as a conventional rim which in most cases is lthe same as the car. That means that the cost benefit is positive in addition to all other advantages. The invention will in long term improve the acoustic environment along the roads and at the same time reduce energy consumption and the environmental footprint.
    公开号:SE1500343A1
    申请号:SE1500343
    申请日:2015-08-25
    公开日:2017-02-26
    发明作者:Lindberg Håkan
    申请人:Mikrofonen Sverige Ab；
    IPC主号:
    专利说明:

    l)l)l)l)l)l)l)r-flr-fl>-ß>-fl>-ß>-fl>-fl>-fl>-fl>-flOKJ1-I>U~>I)>-^O©OOIOKJ1-I>UJI)>-^O©OOIOKJ1 -lšbàlvfi -lš-lš-lš-lš-lš-lš-lš-lš-BUJUJUJUJUJUJUJUJUJUJIQNN)OO10U1-Išb~>l)>-^©©OO10U1-Išb~>l)>fl©©OO1 Stsšzaject tires. štwefiïëoifi This invention is a wheel rim with an acoustic sound absorber integrated in the structure. Thisabsorber is reducing wheel noise from automotive vehicles, such as cars, buses, motor bikes andtrucks.
    Technšcaä lïšešüThe invention is an integrated part of rims for automotive vehicles, such as cars, buses, motor bikesand trucks.
    Probšeæwis sošved by the änvenïšon Road traffic noise is a growing environmental problem. More stringent legislation in this area isexpected in the near future in the EU as well as the rest of the world. Therefore there is a strongdemand from the automotive industry on technology reducing vehicle noise.
    Experience and research has shown that noise from the drivetrain, such as engine, gearbox andexhaust system contributes only to a small proportion of the total noise at speeds higher than 30km/h. The maj ority of vehicle noise at speeds above 30 km/h originates from the contact betweentires and road surface. This noise is radiated from the tires.
    In order to reduce the total noise from road traffic the best method is to reduce the noise from thewheels.
    Inside each tire there is a toroid shaped air mass. This mass of air has a specific resonance thatdepends on the size of the wheel. For cars, this is approximately 250 Hz. In the case of a truck thisresonance is at a lower frequency due to a larger wheel. That means, the resonance depends on thesize of the wheel rim and the tire.
    As the tire rolls on the road the air mass in the tire vibrates due to road unevenness.
    Each uneven part of the road surface initiates impulses in the tire. These vibrations propagate in theair mass inside the tire, which starts to vibrate. These vibrations has a fundamental frequency, at thesame time overtones are created. The noise level inside a tire often exceeds 120 db.
    This noise propagates through the sidewalls of the tire into the environment around the vehicle.The noise from tire and the rim is also transferred through the suspension into the car's passengerand driver space. The noise is also transferred through the air in the wheel well into the car'spassenger and driver space of the car. If it is possible to reduce the resonance inside the tire, thenoise is attenuated significantly both in the car and outside of the car.
    A reduced noise level from the wheels has the advantage of less need of soundproofing of the car'spassenger and driver space. This will reduce production costs of the car and reduce the weight ofthe car. This will then reduce energy consumption of fuel or electricity. 49 6162636466676869717273747677787980818283848687888990919293949697 v ~ ~~ ~t . i ; z ~t WW .g ___, M saßtuàax-š :gsààèsi :så sršscszršxi eb* The mentioned noise problems are Well known and other solutions are described in the followingpatents: JP 2005238888 Tire Sound Absorbing Material JP 2005219592 Low load noise wheel WO 2012/073 721 AI Rim wheel, tire assembly, and method for manufacturing rim wheelGB 2496427 Vehicle wheel JP 2005238888 describes a sound absorbing endless elastic tape kept in place in the U-shaped partof the rim.
    JP 2005219592 describes a similar method as in JP 2005238888 Where the sound absorbing materialis glued in the U-shaped part of the rim.
    WO2012/ 073 721 describes a similar method Where the sound absorbing material partially coveringthe U-shaped part of the rim.
    GB2496427 describes a sound absorbing method With absorbing material in cavities of the rim.
    The three patents JP2005238888, JP2005219592 and WO2012/073721 have similar problems. Thesound absorbing material increases the Weight of the rim. That means an increase of the total Weightof the vehicle as Well as un-sprung Weight. This increases the fuel consumption as Well as degradesthe suspension properties. These patents also have sound absorbent material With expected shortlife. In patent GB2496427 these properties are not relevant. This rim is very complex and Will havehigh manufacturing costs. None of the above mentioned patents have sound absorbing material thatcontributes to the structure strength of the rim. 98 99100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149 p.. _ _.t _: . m... vv; _. Pš...~*§.-š>“.-§ :pšaksw s The purpose of the invention 1s to reduce the above described problems. This is achieved With a rimintegrated With a sound absorbing material. The sound absorbing material is a part of the rim andthis material faces the inside of the tire and the gas in the tire. The foam material is also part of thespokes of the rim and is connected to the gas volume in the tire. The absorbing material consists ofmetal With a foamed structure With open pores. The size of the pores is not uniforrn. This structurehas high sound damping properties and the sound vibrations thus are reduced. The porous metal, inmost cases aluminum or similar alloys, is an integrated part of the rim and contributes to thestructural strength of the rim. This makes it possible to produce rims lighter than above describedrims under the heading “Description of related art”. Another advantage is that the sound absorberWill have the same life as the rim itself. The sound absorber integrated in the rim cannot come looseand cause problems.
    In order to make f1tting of the tire easier the sound absorbing metal foam facing the tire has anumber of narroW solid ridges Where the tire can slide in the f1tting process. The life of the rim isthe same as a conventional rim Which is the same as the car itself. This spreads the cost of the rim toWhole life cycle of the vehicle.
    The invention is described in the fi gure I seen below. It shows a section of a rim With soundabsorbing material made of metal foam With open pores, in the surface facing the tire as Well as inthe spokes. _. W._.~>- \~> -* ww* .w:så x: §§:= 13 s-*< så: 151 The invention is described in the figure I seen below. It shows a section of a rim With sound152 absorbing material of metal foam With open pores, the surface facing the tire as Well as in the spoke.153 1) Standard rubber tire. 154 2) Sound absorbing foamed metal With open pores facing the tire.155 3) Sound absorbing foamed metal With open pores inside the spokes of the rim.156 4) Solid metal of the rim. 157 5) Air or other appropriate gas. 158 6) Narrow solid ridges Where the tire can slide in the fitting process.159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199
    权利要求:
    Claims (1)
    [1] 1. . A Vehicle Wheel, rim, for supporting a pneumatic tire (1). The Wheel comprising a sound absorbing material (2 and 3) as an integrated part of the rim. Wherein the sound absorbingmaterial (2 and 3) consists of a porous, With open pores With a porosity of 20-60% alloy ofaluminum or magnesium or other metal alloys With open pores, ceramics, Nano tubes orcarbon fibers. . A Vehicle Wheel, rim (4), for supporting a pneumatic tire (1) as in preceding claim Where the sound absorbing foam (2 and 3) is formed integrally inside the spokes of the Wheel and isacoustically connected to the sound absorbing foam located around the periphery of theWheel. . A Vehicle Wheel (4), rim, for supporting a pneumatic tire (1) as in preceding claim Where the sound absorbing metal foam (2 and 3), located around the periphery of the Wheel, is dividedWith solid ridges (6) to make the f1tting of the tire easier. . A Vehicle Wheel, rim (4), for supporting a pneumatic tire (1) as in preceding claim Where the sound absorbing metal foam (2 and 3), located around the periphery of the Wheel, Where theporous material absorbs at the spectrum of frequencies related to the torus resonance in thetire.
    类似技术:
    公开号 | 公开日 | 专利标题
    CN106042764B|2020-10-02|Wheel and method for manufacturing the same
    KR101861476B1|2018-07-05|Pneumatic Tire For Reducing Tire Noise
    JP2009029348A|2009-02-12|Vehicular wheel
    JP2002067608A|2002-03-08|Assembly of pneumatic tire with rim
    US20200331306A1|2020-10-22|Noise reducing tyre
    JP2018522780A|2018-08-16|Pneumatic car tires
    JP3776722B2|2006-05-17|Rim wheel
    CN201756141U|2011-03-09|Sound attenuating wheel casing for vehicles
    JPH0714682B2|1995-02-22|Tire and rim assembly
    JP5961309B1|2016-08-02|An automobile wheel with a cavity formed between bolt holes in the hub mounting part
    SE1500343A1|2017-02-26|Low noise wheel rim for automotive vehicles
    JP4459085B2|2010-04-28|Rim wheel and tire / rim wheel assembly
    JP2004090669A|2004-03-25|Method for manufacturing rim wheel
    JP2004299432A|2004-10-28|Road noise reducing device
    JP3667221B2|2005-07-06|Pneumatic tire
    JP4575765B2|2010-11-04|Pneumatic tire and rim assembly
    JP2002234305A|2002-08-20|Rim wheel
    CN207790203U|2018-08-31|A kind of tire and automobile
    JP2012171459A|2012-09-10|Vehicular wheel
    CN207523369U|2018-06-22|A kind of pneumatic tire for the protrusion for preventing from carrying secretly stone
    CN2496688Y|2002-06-26|Wheel
    JP2004106719A|2004-04-08|Manufacturing method for rim wheel
    KR20160045192A|2016-04-27|Noise-reducing wheel for vehicle
    CN212373067U|2021-01-19|Noise suppression tire and vehicle
    JP2004352245A|2004-12-16|Rim wheel
    同族专利:
    公开号 | 公开日
    SE542629C2|2020-06-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1500343A|SE542629C2|2015-08-25|2015-08-25|Low noise wheel rim for automotive vehicles|SE1500343A| SE542629C2|2015-08-25|2015-08-25|Low noise wheel rim for automotive vehicles|
    [返回顶部]