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    • 1. 发明专利
    • Thread-forming screw
    • 螺纹螺纹
    • JP2013116345A
    • 2013-06-13
    • JP2013034488
    • 2013-02-25
    • Medartis Agメダルティス・アクチェンゲゼルシャフトMedartis AG
    • HASENBOEHLER ALAINSCHEUBLE PETERTHIEL DIRK
    • A61B17/68F16B25/00F16B25/04F16B25/06F16B33/02F16B35/00
    • A61B17/863A61B17/8625
    • PROBLEM TO BE SOLVED: To provide a screw capable of suppressing increase in required torque even when a screwing-in depth is increased.SOLUTION: A thread-forming screw (4) is provided with a thread (43) at a shank (40). A pre-forming region (401) is arranged directly adjoining a screw end (42). When the pre-forming region is screwed in, the torque required for screwing-in increases till the pre-forming region is completely screwed in. The pre-forming region, an intermediate region (402) and an anchoring region (403) are designed in such a way that, after the pre-forming region has been completely screwed in, till the screw is screwed in right up to its anchoring region, there is either no increase or only a slight increase, in relation to the increase during the screwing-in of the pre-forming region, in the torque required for screwing-in.
    • 要解决的问题:即使当螺纹深度增加时,也可提供能够抑制所需扭矩增加的螺钉。 解决方案:螺纹形成螺钉(4)在柄(40)处设有螺纹(43)。 预成形区域(401)直接邻接螺钉端部(42)。 当预成形区域被拧入时,旋转所需的扭矩增加,直到预成形区域完全拧入。预成形区域,中间区域(402)和锚定区域(403)被设计 在预成形区域已经被完全拧入之后,直到螺钉被拧入直到其锚定区域,相对于拧紧期间的增加而言,没有增加或仅略有增加 - 在预成形区域中,以拧紧所需的扭矩。 版权所有(C)2013,JPO&INPIT