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公开(公告)号：US20240247680A1
公开(公告)日：2024-07-25
申请号：US18566016
申请日：2021-09-16
申请人： TOPURA CO., LTD.
发明人： Youichi MATSUEDA
CPC分类号： F16B43/001 , F16J15/10
摘要： To provide a screwing fastener that is capable of preventing damage to a function adding member when tightening, and is capable of maintaining suitable functions of the function adding member and a suitable fastened state. A screwing fastener includes a fastener main body 10, a screw portion 13 for tightening the fastener main body 10 to a fastened member 200, a flange portion 14 provided to the fastener main body 10, and a seal function adding member 20 (function adding member) that is provided to the flange portion 14, in which the seal function adding member 20 comes into contact with the fastened member when tightening. The seal function adding member 20 has at least a two-layer structure of a sliding portion 22 (first adding portion) that is in contact with the flange portion 14, and a seal portion 21 (second adding portion) that comes into contact with the fastened member 200.
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公开(公告)号：US20210301861A1
公开(公告)日：2021-09-30
申请号：US17217056
申请日：2021-03-30
申请人： TOPURA CO., LTD.
发明人： Youichi MATSUEDA
摘要： A threaded fastener includes a bolt and a washer. The washer has a washer main body and a seal member provided at an outer peripheral side of the washer main body. The washer is caulked and fixed to a shank portion of the bolt in a water stop state, and the seal member is in contact with a fastened member in a water stop state, with a bearing surface of the washer main body held in contact with the fastened member. The seal member is provided on its outer periphery with a protrusion portion that protrudes outward beyond a radially outer end of a contact portion of the seal member with the washer in a no-load state. A back surface of the protrusion portion on the opposite side of the fastened member is an inclined surface.
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