DE202009005712U1 - Combi screws and combination nuts with captive wedge disk as screw locking design - Google Patents

Abstract

The technical modification of the DIN screw heads and discs with the corresponding altered angles shall be protected by the respective pitch angle of the screws according to the drawing Sheet 1 (Item 1.1) and Washers (Item 1.2) / (Item 1.3) and Drawing Sheet 2 (Item 2.2 / Item 2.3 / Item 4.2) which shows the component as a complete unit to be used as a screw with captive wedge disk as a security element.

Description

Combi screws after DIN 6900 are screws that are joined together with shims. The shims are applied before rolling the thread and are captive after rolling the thread, but freely rotatable.

Subject of the Invention (Utility Model)

The Invention / utility model is a combination screw and nut with a wedge lock washer as a fuse element.

State of the art:

Fasteners with captive shims DIN 6900 EN ISO 10644 with metric thread.

There are numerous pad combinations after
DIN 6902 Slice with
DIN 6904 spring washer
DIN 6905 spring washer
DIN 6906 toothed washer
DIN 6907 serrated washer
DIN 6908 tensioning pulley

These Combinations, however, do not have 100% security elements Warranty against.

Invention and description of the figures

The screw blank (pos 1.1 has a screw head according to the respective DIN standard Deviating from the DIN standard, a wedge profile is pressed onto the underside of the screw head whose angle is greater than the pitch angle of the thread of the screw The shaft corresponds to the diameter around the thread to form.

The Angular dimensions and diameter of the bolt is on the respective Screw diameter matched.

The disc sheet 1 (Pos 1.2 ), the inside and outside diameters are adapted to the respective screw size.

The Pos ( 1.2 ) shows the side of the disc where the angle is the same as the screw blank.

The pos. 1.3 ) is a saw profile which is opposite to the Losdrehrichtung.

The Disc has a hardness of 50 HRC

Advantages of wedges as combination screws:

By the combination of the under-head profiled screw
and joining wedge disk eliminates picking up
and gripping flat parts as well as the time-consuming preparing and assembling at the screw assembly

The assembly costs are reduced

The captive wedge disk connection also allows a safe supply of hard to reach Positions and overhead mounting.

at dismantling the wedge discs are not lost.

The have wedge discs and combination nuts Machine screwing with robots or in transfer systems.

The Wedge disc combination as a screw lock is cost-cutting, because only one wedge disk per unit is installed.

The tapered-land combination screws and combination nuts are very effective against loosening screw connections.

M8 Wedge surface combination screw while trying her by hand to solve Figure 10.3

in the Trying to loosen this screw by hand has shown that The screw additionally applies pretensioning force during rotation. It is designed to overcome a stroke in the direction of the screw axis during rotation must be, which increases the preload even more

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited non-patent literature

• - DIN 6900 [0001]
• - DIN 6900 [0003]
• - EN ISO 10644 [0003]
• - DIN 6902 [0004]
• - DIN 6904 [0004]
• - DIN 6905 [0004]
• - DIN 6906 [0004]
• - DIN 6907 [0004]
• - DIN 6908 [0004]

Claims (1)

The technical modification of the DIN screw heads and discs with the corresponding modified angles should be gunned to the respective pitch angle of the screws according to the drawing sheet 1 (Pos. 1.1 ) and discs (pos 1.2 ) / (Pos 1.3 ) and drawing sheet 2 (pos. 2.2 / Pos. 2.3 / Pos. 4.2 ) which shows the component as a complete unit to be used as a screw with captive wedge disk as a fuse element.