Unverified90% confidenceDecision RuleTime unknown
牵引绳与背包连接处必须是缝合在背带主体或有独立固定环，承重≥15kg；仅用魔术贴或塑料卡扣连接的会在孩子突然冲出时脱落失效
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90%
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Long-term
Relevance
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Unverified牵引绳与背包连接处应采用金属D扣或双重缝线固定，塑料卡扣承重能力普遍不足10kg，孩子突然挣脱奔跑时易断裂失效91% similarUnverified带防走失牵引绳的防摔背包，牵引绳与背包连接处应为可拆卸设计且承重测试≥15kg，一体缝死的牵引绳一旦损坏整包报废86% similarUnverified带防走失牵引绳的防摔包，牵引绳应可拆卸且连接处为宽织带非细绳，细绳款在孩子奔跑时可能勒伤手腕或缠绕颈部84% similarUnverified牵引绳与背包连接点应为360度旋转扣，避免孩子转身、绕圈时绳体扭结缩短或勒住孩子躯干82% similarUnverified绳长应选可伸缩回弹式（伸展范围1.5-2.5m）而非固定长绳，回弹设计避免绳子拖地绊倒，同时给孩子活动空间；纯固定长绳易缠绕在货架或他人身上82% similar
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