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    • 7. 发明公开
    • SEMI-LEFT-HAND-THREAD-REMOVAL SCREW
    • HALB-LINKSGEWINDE-ENTFERNUNGSSCHRAUBE
    • EP3139047A1
    • 2017-03-08
    • EP16185675.2
    • 2016-08-25
    • Li, Chaoyi
    • LI, ChaoyiSUN, Wenfeng
    • F16B23/00B25B27/18
    • F16B35/042B25B27/18F16B23/0076F16B23/0084F16B23/0092
    • A semi-left-hand-thread-removal screw, comprising a screw end head and a bolt, wherein a sink hole is provided on the screw end head, a lower portion of the sink hole is an inscribed polygon structure or an I-shaped structure, a thread which is opposite to the bolt is provided on an upper portion of the sink hole, the inscribed polygon structure is an inscribed hexagon. Preferably, the invention has the following characteristics and use ways: the semi-left-hand-tread-removal screw can be screwed in with a common inscribed hexagon screwdriver and an inscribed hexagon structure thereof which are embedded into each other; the screw can be unscrewed with a left-hand-thread screwdriver which is matched with a left-hand-thread structure thereof and screwed in the left-hand-thread structure thereof, after the left-hand-thread screwdriver is screwed in tightly, the screwdriver is continuously co-rotated and then the screw may be unscrewed. Therefore, when the screw of the invention is unscrewed, the screw may be rapidly and effectively unscrewed no matter whether a screw cap groove is slipped. The invention has a reasonable structure, and may effectively prevent the screw from slipping when the screw is unscrewed.
    • 一种半左螺纹去除螺钉,包括螺钉端头和螺栓,其中在螺钉端头上设置有沉孔,沉孔的下部是内接多边形结构或I形 结构上,与沉孔相对的螺纹设置在沉孔的上部,内接多边形结构是内接六边形。 优选地,本发明具有以下特征和使用方式:半左轮胎去除螺钉可以用共同的六边形螺丝刀和嵌入其中的内六边形结构旋入; 在左螺纹螺丝刀紧紧拧紧之后,可以用左螺纹结构与左螺纹结构相配合的左旋螺纹起子拧下螺丝, 螺丝刀被连续地共同旋转,然后拧下螺丝。 因此,当拧紧本发明的螺杆时,无论螺旋盖槽是否滑动,都可以快速有效地拧下螺丝。 本发明具有合理的结构,可以有效地防止当拧螺丝时螺丝滑动。