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US 10,442,269 B2Granted
Hollow stabilizer
AssigneeNHK Spring Co., Ltd.
InventorsYutaka Wakabayashi, Ken Takahashi, Masato Sugawara, Hideki Okada
Life of this patent
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Abstract
A hollow stabilizer has a tubular shape and is provided with a torsion section that is provided to a vehicle and that extends in the vehicle width direction; an arm section that extends in the front-back direction of the vehicle; and bent sections that connect the torsion section and the arm section. The hardness of the outer surface of the bent inner sides of the bent sections of the hollow stabilizer is 70% or more with respect to the hardness of the outer surface of the arm section.
Claims2
A pipe-shaped hollow stabilizer provided to a vehicle, comprising:
- a torsion section extending in a vehicle width direction;
- an arm section extending in a vehicle front-rear direction;
- and
- a bent section connecting the torsion section and the arm section, wherein
- the torsion section, the arm section, and the bent section are quenched,
- a hardness of an outer surface of an inner bend side of the bent section is at least 70% of a hardness of an outer surface of the arm section, and wherein
- the hollow stabilizer has a metallographic structure, at least 90% of which has martensitic structure, and wherein
- a rockwell hardness of each of the torsion section, the arm section, and the bent section is more than rockwell hardness of 40.0.
5 more elements
Dependencies are inferred from the claim text.