| 摘要 |
A binding component includes ring back portions, first ring arm portions, second ring arm portions and a back part to which the ring back portions are connected. Each ring back portion, each first ring arm portion and each second ring arm portion forms an annular ring part. Each ring part includes fitting portions at places where the ring back portion and the first and second ring arm portions are connected. The fitting portions are configured to be fitted by an operation of opening and closing the first and second ring arm portions with hinge portions of the ring back portion. Each fitting portion includes at least one first fitting convex portion, at least one first fitting concave portion to engage with the first fitting convex portion, at least one second fitting convex portion and a second fitting concave portion to engage with the second fitting convex portion. |
| 主权项 |
1. A binding component comprising:
ring back portions, each ring back portion configured to be an annular ring part; first ring arm portions, each first ring arm portion configured to be the annular ring part and connecting to one end of the ring back portion by a hinge portion; second ring arm portions, each second ring arm portion configured to be the annular ring part and connecting to the other end of the ring back portion by a hinge portion; and a back part to which the ring back portions are connected at predetermined intervals, wherein each ring part includes fitting portions (i) at a place where the first ring arm portion and the ring back portion are connected to each other and (ii) at a place where the second ring arm portion and the ring back portion are connected to each other, the fitting portions configured to be fitted by an operation of opening and closing the first ring arm portion and the second ring arm portion with (i) the hinge portion of the one end of the ring back portion as a support point and (ii) the hinge portion of the other end of the ring back portion as a support point, each fitting portion comprises:
at least one first fitting convex portion at an end of the first ring arm portion or at an end of the second ring arm portion, said end being opposite to the ring back portion;at least one first fitting concave portion at the one end of the ring back portion opposite to the first ring arm portion or at the other end of the ring back portion opposite the second ring arm portion, the first fitting convex portion configured to fitted into the first fitting concave portion;at least one second fitting convex portion at the one end of the ring back portion opposite to the first ring arm portion or at the other end of the ring back portion opposite the second ring arm portion; anda second fitting concave portion at the end of the first ring arm portion or the end of the second ring arm portion, the second fitting convex portion configured to be fitted into the second fitting concave portion, the first fitting convex portion includes a first convex-side load receiving surface at an outwardly facing surface opposite to the first fitting concave portion, the first fitting concave portion includes a first concave-side load receiving surface at an inwardly facing surface opposite to the first convex-side load receiving surface, the second fitting convex portion includes a second convex-side load receiving surface at an outwardly facing surface opposite to the second fitting concave portion, the second fitting concave portion includes a second concave-side load receiving surface at an inwardly facing surface opposite to the second convex-side load receiving surface, the first fitting convex portion includes a third convex-side load receiving surface at a width direction surface opposite to the first fitting concave portion, and the first fitting concave portion includes a third concave-side load receiving surface at a width direction surface opposite to the third convex-side load receiving surface. |
