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公开(公告)号：US20200317100A1
公开(公告)日：2020-10-08
申请号：US16761594
申请日：2018-11-15
申请人： NHK Spring Co., Ltd.
发明人： Yuichiro Yamauchi , Yu Yoda , Takuya Sato , Katsuji Goto , Masakazu Ando , Ayane Sato
摘要： A joined body includes: a thin plate including through holes; first members each including: a base portion and a protruding portion inserted into one of the through holes; and a second member placed oppositely to the base portion via the thin plate and made of a material that is of a same kind as a material of the first members. The thin plate is made of a material having a specific gravity smaller than the materials of the first and the second members. The second member and an end portion of the protruding portion are connected together by melt-solidification. A post-joining hardness difference in a range of 30% along a direction orthogonal to a joint interface between the second member and the protruding portion, the range being centered on the joint interface, is equal to or less than 90% of a pre-joining hardness difference.
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公开(公告)号：US11498466B2
公开(公告)日：2022-11-15
申请号：US16761594
申请日：2018-11-15
申请人： NHK Spring Co., Ltd.
发明人： Yuichiro Yamauchi , Yu Yoda , Takuya Sato , Katsuji Goto , Masakazu Ando , Ayane Sato
IPC分类号： B60N2/68 , B23K11/11 , B23K11/20 , F16B5/00 , F16B5/12 , B23K103/20 , B23K101/00
摘要： A joined body includes: a thin plate including through holes; first members each including: a base portion and a protruding portion inserted into one of the through holes; and a second member placed oppositely to the base portion via the thin plate and made of a material that is of a same kind as a material of the first members. The thin plate is made of a material having a specific gravity smaller than the materials of the first and the second members. The second member and an end portion of the protruding portion are connected together by melt-solidification. A post-joining hardness difference in a range of 30% along a direction orthogonal to a joint interface between the second member and the protruding portion, the range being centered on the joint interface, is equal to or less than 90% of a pre-joining hardness difference.
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公开(公告)号：US11964321B2
公开(公告)日：2024-04-23
申请号：US17360948
申请日：2021-06-28
申请人： NHK SPRING CO., LTD.
发明人： Takeshi Furuse , Daiki Hagiwara , Takuya Sato , Yuichiro Yamauchi
CPC分类号： B21F3/06 , B21F11/005 , B21F35/00
摘要： A coiling machine includes feed rollers for moving a wire, a wire guide, a first forming roller, a second forming roller, a pitch tool, a cutting mechanism, and a support mechanism for supporting the wire. The cutting mechanism includes a cutting rotor. The wire coming out of the wire guide is formed into a helical shape by the first forming roller, the second forming roller and the pitch tool. After one coil spring of a predetermined length is formed, the wire is cut by moving the cutting rotor in the radial direction of the wire. The cutting rotor cuts the wire supported by the support mechanism in the radial direction of the wire between the second forming roller and the pitch tool.
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公开(公告)号：US11549535B2
公开(公告)日：2023-01-10
申请号：US16605353
申请日：2018-04-03
申请人： NHK Spring Co., Ltd.
发明人： Yuichiro Yamauchi , Ayane Sato , Katsuji Goto , Masakazu Ando , Takuya Sato , Yu Yoda , Shimpei Kurokawa , Masatake Kinoshita
摘要： A joined body includes: a thin plate including through holes; a first member including a proximal portion having a portion contacting the thin plate, and a protruding portion that protrudes in relation to a contact surface of the proximal portion and is inserted through the through hole; and a second member arranged oppositely to the proximal portion via the thin plate and made of a material that is same as that of the first member. The thin plate is made of a material having a specific gravity smaller than that of the material forming the first and the second members. The second member and an end portion of the protruding portion are connected to each other, by a part of the second member and a part of the end portion being melt-solidified, the end portion being at a side opposite to a side connected to the proximal portion.
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