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发明公开
CN101576113A 在螺栓和螺母间存在螺距差的螺栓结合体 无效 - 驳回

  • 专利标题： 在螺栓和螺母间存在螺距差的螺栓结合体
  • 专利标题（英）： Bolt combiner with thread pitch difference between bolt and nut
  • 申请号： CN200910011036.9
    申请日： 2009-04-03
  • 公开(公告)号： CN101576113A
    公开(公告)日： 2009-11-11
  • 发明人: 西田新一 , 孙中强
  • 申请人： 孙中强
  • 申请人地址： 辽宁省沈阳市和平区文化路3号巷11号东北大学278信箱
  • 专利权人： 孙中强
  • 当前专利权人： 孙中强
  • 当前专利权人地址： 辽宁省沈阳市和平区文化路3号巷11号东北大学278信箱
  • 代理机构： 沈阳东大专利代理有限公司
  • 代理商 李运萍
  • 主分类号： F16B35/04
  • IPC分类号： F16B35/04 ;  F16B31/06 ;  F16B33/02
在螺栓和螺母间存在螺距差的螺栓结合体
摘要：
在螺栓螺母间存在螺距差的螺栓结合体，属于机械零件技术领域，包括螺栓和螺母，螺栓包括螺栓头部、螺栓圆柱部和螺纹部，螺纹部由不完全螺纹部、螺纹牙除去部和完全螺纹部组成，螺母的螺距Pn略大于螺栓的螺距Pb，并且满足关系式2×10－3≤(Pn－Pb)/Pb≤2×10－2。本发明中通过在湿度范围内调整螺栓和螺母的螺距差，防松效果明显，在连接状态下施加反复变动应力也不会造成松动和疲劳损坏，能确实维持连接状态，具备极好的抗驰缓性及耐疲劳性，可适用于反复应力作用的场所，在产业上具有极高的可用性。
摘要（英）：

The invention relates to a bolt combiner with thread pitch difference between a bolt and a nut, which belongs to the technical field of machine parts. The bolt combiner comprises the bolt and the nut, wherein the bolt comprises a bolt head, a bolt cylindrical part and a threaded part; the threaded part consists of an incomplete threaded part, a thread tooth removing part and a complete threaded part; and the thread pitch Pn of the nut is slightly larger than the thread pitch Pb of the bolt, and the following relational expression is satisfied: (Pn-Pb)/Pb is more than or equal to 2*10 and is less than or equal to 2*10. By adjusting the thread pitch difference between the bolt and the nut in a humidity range, the bolt combiner has obvious locking effect, cannot cause loosening and fatigue damages by applying repeated varying stresses under a connection state, can surely maintain the connection state, has good anti-flaccid property and fatigue resistance, can be applicable to occasions with repeated stresses, and has extra-high industrial applicability.

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