Stabilizer and method of manufacturing same
AssigneeNHK Spring Co., Ltd.
InventorsMasato Sugawara, Shogo Mori
Life of this patent
Estimating the term…
Abstract
A stabilizer comprises a main bar that is elastically deformable, a pair of connecting plates respectively configured to be connected to a pair of left and right suspension apparatuses, and transition sections connecting both end portions of the main bar and the pair of connecting plates, a size of one transition section of the transition sections in a plate thickness direction of one connecting plate of the connecting plates gradually decreasing from the main bar toward the connecting plate, wherein the minimum value of the Vickers hardness of the transition section is 200 HV or more.
Claims8
A stabilizer comprising:
- a main bar that is elastically deformable;
- a pair of connecting plates respectively configured to be connected to a pair of left and right suspension apparatuses;
- and
- transition sections connecting end portions of the main bar and the pair of connecting plates, a size of one transition section of the transition sections in a plate thickness direction of one connecting plate of the connecting plates gradually decreasing from the main bar toward the connecting plate,
- wherein a minimum value of the Vickers hardness of the transition section is 200 HV or more, and
- a maximum value of the Vickers hardness of the transition section is smaller than a maximum value of the Vickers hardness of the connecting plate.
A method of manufacturing a stabilizer, the stabilizer comprising:
- a main bar that is elastically deformable;
- a pair of connecting plates respectively configured to be connected to a pair of left and right suspension apparatuses;
- and
- transition sections connecting end portions of the main bar and the pair of connecting plates, a size of one transition section of the transition sections in a plate thickness direction of one connecting plate of the connecting plates gradually decreasing from the main bar toward the connecting plate,
- the method comprising:
- a heating process of heating sections of a rod body intended to be respectively formed into the connecting plate and the transition section to a temperature of an A1 transformation point or more;
- and
- a forging process of molding the connecting plate by performing forging on the section intended to be formed into the connecting plate,
- wherein the connecting plate is molded while the section intended to be formed into the transition section is cooled during the forging process.
Dependencies are inferred from the claim text.