| 摘要 |
PROBLEM TO BE SOLVED: To provide especially a combining type buckle for a safety belt as for the buckle for the safety belt for a high-place worker to wear on his/her waist for fall prevention. SOLUTION: The combining-type single-action buckle consists of a socket part and a tongue part obtained by assembling metal plates of nearly symmetric shapes, and is a triple safety device by which a tongue plate cannot be released without operating a releasing method from three directions. Combining operation is simple and a belt edge part is never worn out, thereby the buckle is suitable for long use. With the symmetrical shapes, cutting dies and bending dies are reduced for cost down. COPYRIGHT: (C)2004,JPO&NCIPI
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