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1. 发明申请

US20030059275A1 Bolt and nut 有权
标题翻译：螺栓和螺母
公开(公告)号：US20030059275A1
公开(公告)日：2003-03-27
申请号：US10253040
申请日：2002-09-24
申请人： AOYAMA SEISAKUSHO CO., LTD.
发明人： Hiromichi Mizuno , Masahiko Hamada , Tetsuya Osawa , Kazuhiro Aoyama , Mitsuru Kozawa
IPC分类号： F16B025/00
CPC分类号： F16B35/047 , F16B37/00
摘要： An object of the present invention is to provide a bolt and a nut capable of appropriately adjusting the orientation of the bolt and fastening the bolt and the nut without fastening defects such as slipping and seizure even when the bolt is obliquely inserted into the nut. The present invention provides a bolt provided with a head part and a shank part extending from the head part. The shank part includes a first constant diameter cylindrical part, a transition part, a cylindrical connection part, and a second constant diameter cylindrical part. The first constant diameter cylindrical part has a first constant diameter in an axial direction and a screw thread with a predetermined pitch is formed on the side surface thereof. The transition part has a tapered shape with a diameter gradually decreasing with distance from the head part in the axial direction and concentrically extends from the tip portion of the first constant diameter cylindrical part, and a screw thread with a predetermined pitch is formed on the side surface thereof. The cylindrical connection part has a diameter smaller than that of the first diameter in the axial direction, and concentrically extends from the tip portion of the transition part. The second constant diameter cylindrical part has a second constant diameter and smaller than the first diameter in the axial direction and concentrically extends from the tip portion of the cylindrical connection part, and a screw thread with a predetermined pitch is formed on the side surface. The crest part of the screw thread formed on the side surface of the transition part is truncated.
摘要翻译：本发明的目的是提供一种螺栓和螺母，其能够适当地调整螺栓的定向并且紧固螺栓和螺母，而不会在螺栓倾斜地插入螺母中时产生滑动和咬合等紧固缺陷。本发明提供了一种螺栓，其具有从头部延伸的头部和柄部。柄部分包括第一恒定直径圆柱形部分，过渡部分，圆柱形连接部分和第二恒定直径圆柱形部分。第一恒定直径圆柱形部件在轴向上具有第一恒定直径，并且在其侧表面上形成具有预定间距的螺纹。过渡部分具有从头部在轴向方向上的距离逐渐减小的锥形形状，并且从第一恒定直径圆柱形部分的顶端部分同心地延伸，并且在侧面上形成具有预定间距的螺纹表面。圆筒形连接部分的直径小于第一直径在轴向上的直径，并且从过渡部分的顶端部分同心地延伸。第二恒定直径的圆柱形部分具有第二恒定直径并且小于轴向的第一直径，并且从圆柱形连接部的顶端部同心地延伸，并且在侧面上形成具有预定间距的螺纹。形成在过渡部分的侧表面上的螺纹的顶部被截断。

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