| 摘要 |
PURPOSE: A bolt for a box structure is provided for the bolt to be installed firmly to a pickle lamp member for securing a sufficient inner rotary force. CONSTITUTION: A bolt is composed of:a bolt unit(12) installed at one end side of a shaft unit(11); a bar material(14) forcibly inserted to a forcible insertion aperture(13) installed at the other end surface of the shaft unit; and a jaw unit(15) installed on the core of the shaft unit. The shaft unit comprises:the integrally formed jaw unit by a cold process; and the diameter of the end surface of the forcible insertion aperture larger than an adhesive aperture(21) installed on the steel plate pickle lamp member.
|
