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    • 8. 发明授权
    • Cord guard
    • 线卫
    • US6050847A
    • 2000-04-18
    • US339672
    • 1999-06-24
    • Takahide KawakamiToshio MatsumotoTakanori KanouKazuma Oshima
    • Takahide KawakamiToshio MatsumotoTakanori KanouKazuma Oshima
    • H05K7/00H01R13/56
    • H01R13/562
    • The cord guard 1 having a cylindrical hollow passage 5 into which a cord 3 can be inserted and a flange portion 11 at one end which is retained by a cord guard retainer 9 in a half housing 7. The cord guard 1 further having a tapering wall portion 13 the wall thickness of which is gradually reduced from the flange portion 11 toward the free end, a constant wall portion 15 extending in series from the tapering wall portion 13 further toward the free end with its wall thickness constant, and a thicker wall ring flange 17 provided along the periphery of the free end of the constant wall portion 15. The wall thickness and the length of the constant wall portion 15 are determined such that the constant wall portion 15 is provided with a bending strength low enough that it is flexed smoothly together with the cord 3 when a load approximately equal to the weight of the cord 3 is applied as a bending load.
    • 绳索防护罩1具有可插入绳索3的圆柱形中空通道5和一端的凸缘部分11,该凸缘部分11由半壳体7中的帘线保护保持器9保持。绳索防护罩1还具有锥形壁 部分13的壁厚从凸缘部分11逐渐减小到自由端;恒定的壁部分15,其从锥形壁部分13逐渐地向自由端延伸,其壁厚不变;以及较厚的壁环 凸缘17沿着恒定壁部15的自由端的周边设置。恒定壁部15的壁厚和长度被确定为使得恒定壁部15具有足够低的弯曲强度以使其弯曲 当大约等于绳索3的重量的载荷作为弯曲载荷施加时,与绳索3平滑地一起。