| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a theft prevention bolt capable of sufficiently exhibiting a theft preventing effect, performing work without complication, being easily handled, making a bolt head body detached from a connecting screw body, making a first engagement section for a jig easily engaged with a second engagement section for a second jig, and loosening a bolt base body. <P>SOLUTION: The theft prevention bolt is configured as follows. The theft prevention bolt comprises a bolt base body A, a bolt head body E, a shaft body B, a resilient spring C, and a connecting screw body D. The resilient spring C makes second serrations 32 of the bolt head body E engaged with first serrations 3 of the bolt base body A. A rotational force can be transmitted when the bolt head body E is rotated but cannot be transmitted when the bolt head body E is rotated reversely. The first serrations 3 are provided with a first engagement section 8 for a jig and the connecting screw body D is provided with a second engagement section 22 for a jig. A first engagement section 40 is engaged with the second engagement section 22 for a jig to detach the bolt head body E from the connecting screw body D. Then, the bolt base body A can be rotated reversely by the second engagement section 41 of a second jig F2 engaged with the first engagement section 8 for a jig. <P>COPYRIGHT: (C)2012,JPO&INPIT |
