发明申请
US20090298630A1 PULLEY FIXING STRUCTURE 审中-公开
螺旋固定结构

  • 专利标题: PULLEY FIXING STRUCTURE
  • 专利标题(中): 螺旋固定结构
  • 申请号: US12472493
    申请日: 2009-05-27
  • 公开(公告)号: US20090298630A1
    公开(公告)日: 2009-12-03
  • 发明人: Katsunori MINENOGoro Nakao
  • 申请人: Katsunori MINENOGoro Nakao
  • 优先权: JP2008-139494 20080528
  • 主分类号: F16H55/36
  • IPC分类号: F16H55/36
PULLEY FIXING STRUCTURE
摘要:
A pulley fixing structure includes a pulley with a ball bearing, and a bracket having a shaft portion on which the inner race of the bearing is pressed with an interference fit. The thermal expansion of the radially outer portion of the shaft portion of the bracket is larger than that of the radially inner portion of the inner race of the bearing. The interference thus decreases at a low temperature. Reduction of the radial clearance of the bearing 1 by pressing is thus compensated, and cold weather noise can be prevented while reducing the number of required parts and making the assembly process simple.
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