| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a wheel having highly airtight air chambers radially inside of a bead seat of a rim, in a reliable and highly productive manner. SOLUTION: The wheel includes an annular space formed radially inside of the bead seat of the rim while extending along the bead seat, and partitioned into the plurality of air chambers via a plurality of partition walls, and communication parts formed in the air chambers between the air chamber and a space radially outside of the rim, the air chambers and the communication parts constituting a Helmholtz resonator. In manufacturing the same, the rim is shaped through a step of shaping a peripheral wall which is isolated from the flange of the rim while extending radially outside of a well, a step of arranging a plurality of partition materials as the partition walls between the peripheral wall and the flange in spaced relation, a step of bending the peripheral wall to the side of the flange and pushing it at its front end against the flange to form the bead seat while crushing the partition materials at least at their front ends against the peripheral wall to put the partition materials in close contact with the peripheral wall, and a step of forming holes as the communication parts in the peripheral wall. COPYRIGHT: (C)2011,JPO&INPIT
|
