Vehicle suspension member
US-2017174030-A1 · Jun 22, 2017 · US
Stabilizer
US11111554B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11111554-B2 |
| Application number | US-201515534472-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2015 |
| Priority date | Dec 8, 2014 |
| Publication date | Sep 7, 2021 |
| Grant date | Sep 7, 2021 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A stabilizer formed by using a metal bar having a solid structure and configured to reduce a displacement between right and left wheels, including a torsion part extending in a vehicle width direction, being capable of a torsional deformation, and having a diameter of 10 to 32 mm, is provided. The stabilizer has a chemical composition containing at least C: 0.15% by mass or more to 0.39% by mass or less, Mn, B, and Fe, and also has a metal structure 90% or more of which is a martensite structure.
First claim
Opening claim text (preview).
The invention claimed is: 1. A stabilizer formed by using a metal bar having a solid structure, the stabilizer comprising: a torsion part extending in a vehicle width direction, and having a diameter of 10 to 32 mm, wherein the stabilizer has a chemical composition containing at least C: 0.15% or more to 0.39% or less by mass, at least Mn: 0.50% or more to 1.70% or less by mass, and at least B: 0.0005% or more to 0.0003% or less by mass, and Fe, and also has a metal structure 90% or more of which is a martensite structure, the stabilizer having a Rockwell hardness (HRC) of 44.5 or more, and a Charpy impact value of 30 J/cm 2 or more at room temperature, and wherein a compress residual stress is present from a stabilizer surface to a depth of at least 0.8 mm, and has a value of 150 MPa or more under no load. 2. The stabilizer according to claim 1 , wherein the stabilizer has a Rockwell hardness (HRC) within a range of more than 44.5 to 55.5 or less. 3. The stabilizer according to claim 1 , further comprising: in terms of mass, Si: 0.05% or more to 0.40% and P: 0.040% or less and S; 0.040% or less; optionally at least one or more elements selected from the group consisting of Ni, Cr, Cu, Mo, V, Ti, Nb, Al, N, Ca, and Pb each within a range of 1.20% or less as optional additive elements; and unavoidable impurities.
Assignees
Inventors
Classifications
during manufacturing of rods or wires · CPC title
Shot-peening · CPC title
Quenching · CPC title
Torsion springs consisting of bars or tubes · CPC title
Wires, bars or the like · CPC title
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- What does patent US11111554B2 cover?
- A stabilizer formed by using a metal bar having a solid structure and configured to reduce a displacement between right and left wheels, including a torsion part extending in a vehicle width direction, being capable of a torsional deformation, and having a diameter of 10 to 32 mm, is provided. The stabilizer has a chemical composition containing at least C: 0.15% by mass or more to 0.39% by mas…
- Who is the assignee on this patent?
- Nhk Spring Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60G21/055. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 07 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).