| 摘要 |
PROBLEM TO BE SOLVED: To restrict floating at a connection part without deteriorating installation performance while maintaining ride comfortableness. SOLUTION: Support point of each net divided body 2 include end support points Pi, Qi formed at both ends, and net support points Xi, Yi separated from the end support points Pi, Qi by 50 mm or more. Recessed part lengths NAi, NBi of a recessed part 20 at respective end parts E1, E2 from the end support points Pi, Qi satisfy: (NPQi-LPQi)×PXi×0.75/ LPQi<=NAi<=(NPQi-LPQi)×PXi×0.50/LPQi, and (NPQi-LPQi)×QYi×0.75/ LPQi<=NBi<=(NPQi-LPQi)×QYi×2.50/LPQi. LPQi is a developed length of a fixing rope between the end support points Pi, Qi when 20 kg is loaded, PXi, QYi are developed lengths of the fixing rope between the end support points Pi, Qi and the net support point Xi, Yi when 20 kg is loaded, and NPQi is a length between the end support points Pi, Qi of the net devided body 2 when developed in a plain surface.
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