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Safety screw, screw connection and method for producing safety screw

A safety screw and screw connection technology, applied in the direction of screws, connecting members, nuts, etc., can solve complex problems and achieve the effect of improving safety

Active Publication Date: 2014-05-28
哈特马特.弗莱格
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A further disadvantage is that these safety helices must be produced in a complex manner by means of specially constructed molds during screw manufacture.
Therefore it is not possible to economically produce safety helixes in specified axial positions in small quantities

Method used

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  • Safety screw, screw connection and method for producing safety screw
  • Safety screw, screw connection and method for producing safety screw
  • Safety screw, screw connection and method for producing safety screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] In the figures, identical parts and parts having the same function are designated by the same reference numerals.

[0046] figure 1 The longitudinal section of the safety screw 1 is shown in partial view. The base body 2 (here the screw shank) of the safety screw can be seen. For clarity of view, the screw heads used where necessary are not shown.

[0047] The base body 2 is formed with an external thread 3, and the figure shows the cross-sectional shape of a total of four helical grooves 4 in the external thread 3 (the cutting direction is along the longitudinal direction of the screw). Of the four helical grooves 4 of the helix 5 of the external thread 3 , the only helical groove is designed as a so-called safety helical groove 6 , whose cross-sectional shape is deformed compared to the other helical grooves 4 , narrowing here. The deformation of the cross-sectional shape of the safety helical groove 6 is caused by the deformation of the thread tooth 7 constituting...

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PUM

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Abstract

The screw (1) has a screw body (2) provided with an external thread (3) that comprises a safety thread winding (6). The safety thread winding is delimited by two thread teeth (7, 9). A cross-sectional profile of the safety thread winding is deformable more than a cross-sectional profile of another safety thread winding (11). The thread tooth adjacent to the deformed thread tooth is not deformable or both the thread teeth delimiting the winding are deformable exclusively in a screwing direction (8) of the screw. Independent claims are also included for the following: (1) a screw connection comprising an internal thread element (2) a method for producing a safety screw.

Description

technical field [0001] The present invention relates to a safety screw for screw connections, comprising a base body with an external thread having at least one safety helical groove bounded by two thread teeth, the cross-sectional shape of which is identical to that of at least one other helical The cross-sectional shape of the groove, preferably compared to the cross-sectional shape of a plurality of other helical grooves, preferably compared to the cross-sectional shape of the vast majority of helical grooves, is deformed to increase the Adhesion of the screw connection device. Furthermore, the invention relates to a screw connection comprising a safety screw, as well as to a method and a device for producing such a safety screw. Background technique [0002] Known by DE102005050919A1 a kind of safety screw that has external thread, it has a plurality of safety spiral grooves (Sicherungsgewindegangwindung), wherein the cross-sectional shape of safety spiral groove is nar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/30
CPCF16B39/30
Inventor W·K·W·霍尔谢尔
Owner 哈特马特.弗莱格