| 摘要 |
To provide a vehicle stabilizer for high stress in which fatigue life of a bending portion can be prolonged and which can exhibit excellent durability. A configuration of a bending portion 16 , to which a maximum stress is applied and which is the most fragile part, of a vehicle stabilizer for high stress 10 is formed in a state which satisfies conditions: 0<phi<=4 and (phixd/R)<=2, wherein d represents a material diameter before bending process, R represents a radius of bending of the bending portion 16 , d 1 represents a short radius of a cross section of the bending portion 16 , d 2 represents a long radius of a cross section of the bending portion 16 , and a flat rate phi0 of a cross section of the bending portion 16 is represented by the following equation: phi=(d 2 -d 1 )/d 2 x100. Accordingly, concentration of shearing stress on the bending portion 16 during a load input can be suppressed to prevent the vehicle stabilizer for high stress 10 from being broken due to the concentration of stress on the bending portion 16.
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