To provide a tapered top capable of being stably fastened to a base material, and to provide a joining structure for fastening the tapered top to a member such as a resin material.
This tapered top 1 includes a tapered part 5 having a truncated cone shape, and a collar part 6 formed in an expanding side end part of the tapered part. A maximum diameter of the tapered part is set to 1.1 to 1.7 times of a nominal diameter. The tapered top stops in a state of projecting the collar part in an upper part of a tapered hole without being completely embedded in the tapered hole when inserted into the tapered hole 7 of the base material 2, and an empty space (an interference) S of a predetermined dimension is formed between a collar part lower surface and an upper surface of the base material. When further pushing in the tapered top so as to eliminate the interference (to become zero), the top and the base material are tightly fixed, and are not separated easily.
SHIMOKAWA SHIGENOBU
SHIMOKAWA GO
JP3043980U | 1997-12-12 | |||
JP2001234915A | 2001-08-31 | |||
JPH09287609A | 1997-11-04 | |||
JP2002323679A | 2002-11-08 | |||
JPS646258U | 1989-01-13 | |||
JPH09287609A | 1997-11-04 | |||
JP2002323679A | 2002-11-08 | |||
JPS646258U | 1989-01-13 | |||
JP3043980U | 1997-12-12 | |||
JP2001234915A | 2001-08-31 |
Masahiro Kurai
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