| 摘要 |
PROBLEM TO BE SOLVED: To provide an axle structure capable of increasing extraction force of a ring-shaped bracket without depending on dimensional accuracy of a fitting surface.SOLUTION: The axle structure is provided for fixing the ring-shaped bracket 5 to an axle tube 3 by shrinkage fit, and an inner diameter of the ring-shaped bracket 5 is formed smaller than an outer diameter of a shrinkage fit part 6 of the axle tube 3 of shrinkage-fitting the ring-shaped bracket 5, and after forming a chamfering part 7 on the inner peripheral edge of the ring-shaped bracket 5, its ring-shaped bracket 5 is inserted and shrinkage-fitted in a state of positioning the chamfering part 7 on the outside in the vehicle width direction in the shrinkage fit part 6, and the outer periphery of the shrinkage fit part 6 is contracted in response to thermal contraction of the ring-shaped bracket 5 in this case, and a protrusion part 8 protruding to the chamfering part 7 is formed in the shrinkage fit part 6, and its protrusion part 8 and the chamfering part 7 are engaged. |
