公开(公告)号：EP3998171A1

公开(公告)日：2022-05-18

申请号：EP20836268.1

申请日：2020-07-06

Applicant: NHK Spring Co., Ltd.

Inventor： INABA, Masato ,  NAKAYAMA, Junichi ,  YAMAUCHI, Yuichiro

IPC: B60G21/055 ,  C21D9/08 ,  C22C38/00 ,  C22C38/18

Abstract: A stabilizer (1) is a stabilizer including: a main body cylinder portion (11) which is elastically deformable and a pair of connection plate portions (12) respectively connected to a pair of left and right suspension devices (50), wherein the connection plate portion (12) includes a pair of base material portions (16) located on both sides in the connection plate portion in a plate thickness direction T and an alloy oxide region (17) which is disposed between the pair of base material portions (16) and in which alloy oxides are scattered, and wherein crystal grains constituting the pair of base material portions (16) straddle the alloy oxide region (17) in the plate thickness direction and the pair of base material portions (16) are joined.

公开(公告)号：EP3943209A1

公开(公告)日：2022-01-26

申请号：EP20774014.3

申请日：2020-03-12

Applicant: NHK Spring Co., Ltd.

Inventor： MIZUKAMI, Hiroshi ,  INABA, Masato ,  SUGAWARA, Masato ,  MASUDA, Michiya

IPC: B21K1/06 ,  B60G21/055

Abstract: A method for manufacturing a stabilizer (1), the stabilizer (1) including a main body bar (11) that is elastically deformable, and a pair of connecting plates (12) that are separately connected to a pair of left and right suspension devices (50), the method including a forging step of forming the connecting plate (12) by forging both end portions of a material tube (W), in which in the forging step, both end portions of the material tube (W) are crushed in a radial direction to be formed into the connecting plate (12) in a state where a sealing metal plate (17) heated to a temperature equal to or higher than a melting point is disposed inside both end portions of the material tube (W) heated to a temperature lower than the melting point.