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Threaded element, connection assembly comprising the element and method of manufacturing both

A technology of threaded elements and connecting components, applied in the direction of connecting components, threaded fasteners, screws, etc.

Active Publication Date: 2020-10-02
BOLLHOFF VERBINDUNGSTECHNIK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this configuration has the disadvantage that the screwing-in torque is higher than the loosening torque due to the cutting edge in the screwing-in direction

Method used

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  • Threaded element, connection assembly comprising the element and method of manufacturing both
  • Threaded element, connection assembly comprising the element and method of manufacturing both
  • Threaded element, connection assembly comprising the element and method of manufacturing both

Examples

Experimental program
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Embodiment Construction

[0032] A preferred embodiment of the inventive threaded element in the form of a screw 1 made of plastic is in Figure 1A shown in . Preferably, the threaded element can also be realized as a screw insert or threaded insert 2 made of plastic, such as Figure 1B shown.

[0033] According to the invention, the external thread 5 of the plastic screw 1 or plastic insert 2 is preferably configured such that when inserted into the receiving opening of the support part, it optimally forms a reverse thread on the inner wall of the receiving opening. The reverse thread can be formed by a cutting process or by material deformation or by a combination of the above two processes.

[0034] A preferred screw 1 according to the invention shown exemplarily in FIG. External thread 5, transition zone 8 between the screw shank 3 and the screw head 7, the drive member at the screw head 7, and the tip 9 at the core of the screw 1 or the end of the screw shank 3 opposite the screw head 7. In the...

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PUM

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Abstract

The invention relates to a threaded element made of plastic, a connection assembly comprising a support part made of plastic, said threaded element made of plastic being screwed into said support part by creating a reverse thread, a A method of making said connection, and a method of making said threaded element. The threaded element features an axial piece in which the circumferential winding of the threaded turn is interrupted by at least two chip flutes. The resulting coiled region forms a cutting web and a restraining web, wherein the cutting web extends radially beyond the restraining web.

Description

technical field [0001] The invention relates to a threaded element made of plastic, in particular a plastic screw, a plastic screw insert with an internal thread and a plastic thread insert; a connection assembly comprising a a plastic support part in which a threaded element has been screwed in and at the same time forms a thread in a self-acting manner; and a method of manufacturing said connection assembly from at least one said plastic support part and said threaded element made of plastic; And a method of manufacturing a threaded element. Background technique [0002] The aforementioned connection assemblies are known in the prior art, which comprise at least one support part made of plastic and a plastic threaded element in the form of a screw or a collar with a self-forming external thread. They are described, for example, in DE 2 047 482 A1, US 4,637,767, US 5,921,735, US 5,385,439 and DE 10 2004 021 484 A1. [0003] US 5,385,439 describes a screw having an externa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B25/00
CPCF16B25/0052F16B25/0015F16B25/00
Inventor 亚历山大·沃德威斯
Owner BOLLHOFF VERBINDUNGSTECHNIK GMBH
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