| 摘要 |
PROBLEM TO BE SOLVED: To improve a fixing property in driving a slave-master type nail into a plate body by gradually reducing the diameter of each flange on a working stage from top to bottom. SOLUTION: The slave-master type nail 1 provided with a slave nail provided on a master nail has the effect of enhancing the fixing property. The nail 1 comprises the master slave and at least one slave nail 2, and the master slave includes a working stage 11 on a nail body thereof, the working stage including at least one or more flanges 111, and at least one slave nail housing groove 112 formed by notching at least one or more vertical relative positions of the respective flanges to stow at least one slave nail. The slave nail includes a connecting stage connecting with the nail body surface of the master nail at the upper end thereof and a nail pointed head having an inclined surface. The outside surface of the slave nail body includes at least one notch. When the nail body of this slave-master type nail is driven to a metal plate, the slave nail is fixed and limited between optional two upper and lower flanges and inserted into a partition plate using a curve at one side thereof, or the salve and master nails can be directly penetrated into the metal plate by performing hardening treatment to the slave nail, whereby the fixing property can be enhanced to prevent looseness. COPYRIGHT: (C)2008,JPO&INPIT
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