| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an assembly of a pneumatic tire and the rim having a sound absorbing device for further reducing noise, by reducing cavity resonance in a tire cavity, by being configured such that a sound absorbing material forms a plurality of layer shapes in the tire circumferential direction, by adopting a material for permeating air as the sound absorbing material, in a sound absorbing structure in the tire cavity. <P>SOLUTION: This assembly of the pneumatic tire and the rim forms the tire cavity 32 between the pneumatic tire and the rim by installing the pneumatic tire 30 in the rim 31. The assembly of the pneumatic tire and the rim has one or more sound absorbing devices 33 installed in an air valve 40 in the assembly and arranged so as to be capable of intercepting a space in the tire circumferential direction in the tire cavity. The sound absorbing device 33 has an installation part to the assembly inside, a front sound absorbing layer 36 constituted of a porous sound absorbing material and a rear sound absorbing layer 37 constituted of the porous sound absorbing material. <P>COPYRIGHT: (C)2013,JPO&INPIT |
