| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the erroneous fitting of a seat belt without increasing kinds of latch part structures for tongues and buckle structures corresponding to the same. SOLUTION: A first indicator is provided on a tongue holding part which is held during fitting the seat belt of either of a first tongue or a second tongue separately or as one body. A cylindrical second indicator enclosing a first or a second buckles 8, 9 is provided on the first or the second buckle 8, 9 engaging with the tongue which is not provided with the first indicator. The width or thickness of the first indicator is formed larger than the width or thickness of the tip of the second indicator. When the first indicator gets into contact with the tip of the second indicator, the depth from the tip of the second indicator to the buckle is set to a depth with which a buckle engagement part of the tongue provided with the first indicator does not reach the tongue engagement part of the buckle.</p> |
