Invention Application
US20120291283A1 VEHICLE WHEEL MANUFACTURING METHOD 有权
车轮制造方法

  • Patent Title: VEHICLE WHEEL MANUFACTURING METHOD
  • Patent Title (中): 车轮制造方法
  • Application No.: US13575012
    Application Date: 2011-01-20
  • Publication No.: US20120291283A1
    Publication Date: 2012-11-22
  • Inventor: Akihiro IkedaMasahide Furukawa
  • Applicant: Akihiro IkedaMasahide Furukawa
  • Priority: JP2010-038139 20100224
  • International Application: PCT/JP2011/050921 WO 20110120
  • Main IPC: B23P17/00
  • IPC: B23P17/00
VEHICLE WHEEL MANUFACTURING METHOD
Abstract:
A method for manufacturing a vehicle wheel is suggested in which the vehicle wheel can provide function and effect of preventing molding defects during molding of an outer rim portion and/or an inner rim portion having sound absorbing spaces 25 and of reducing acoustic cavity noise that occurs in a tire-internal space by use of the sound absorbing spaces. After a separation groove having a curved shape groove bottom surface 55a is formed between a ring-shaped wall portion and partition wall portions, the ring-shaped wall portion is bent toward a flange portion, and the ring-shaped wall portion and the flange portion are welded together. The sound absorbing spaces which communicate with each other via communication gaps defined according to the separation groove are thereby formed in the outer rim portion and/or the inner rim portion. In such a method, since the communication gaps can be stably formed, an increase in internal pressure caused by heat expansion of air in the sound absorbing spaces during a heat treatment step can be reduced, thus allowing prevention of molding defects due to the increase in the internal pressure.
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