DE3531676A1 - Pinched-sleeve nut - Google Patents

Abstract

The invention belongs to the field of fastening technology. It consists of three associated parts: 1) An upper sleeve with a hexagonal head and a thread. 2) A pinched sleeve with a hole passing centrally through it. 3) A lower sleeve with a hole. The projections, which are of the same size on all three sleeves and are of triangular profile, fit one another when the pinched-sleeve nut is assembled and thus prevent the individual parts rotating and in consequence achieve better retention. The pinched sleeve is pressed into the thread pitches of the screw and encloses them completely and firmly. In consequence, an optimum locking effect is achieved which completely precludes the screw and the pinched-sleeve nut becoming undone on their own. The advantages of the pinched-sleeve nut over already existing locking types are: The pinched-sleeve nut can be used several times without becoming less effective. The pinched-sleeve nut does not leave any scratches or grooves behind on the workpiece after it is removed (as is the case with spring washers). c

Description

Crimp sleeve nut The invention belongs to the area: Fastening technology.

It consists of three related parts: 1 / upper sleeve with one Hexagon head and a thread.

2 / ferrule with a central hole.

3 / ULter sleeve with a hole.

The upper and lower sleeves are used for screw and nut production usual steel made.

The crimp sleeve must be made of a material that is well suited to the Can adjust threads of the screw, and in the compressed state is tough.

The triangular profiles on all three sleeves, of the same size Projections, adapt to each other when assembling the compression sleeve nut, and thus prevent the individual parts from spinning and thereby achieve a better grip.

The hole in the lower sleeve should be drilled 1 / 1o larger than the outside diameter of the counter-locking screw to prevent jamming of the two parts to prevent during assembly.

The sloping, upper inner edge of the lower sleeve should be used in Tighten the ferrule and guide it downwards.

The hole in the crimp sleeve must not have more play than 0.5 mm.

The ferrule nut and the screw to be countered must be completely be free of grease in order to achieve a better front effect.

The map of the ferrule nut is based on the hexagon head or thread of the screw to be countered.

How it works: By tightening the upper sleeve, the crimp sleeve is opened pressed into the lower sleeve and compressed.

The ferrule presses into the threads of the screw and completely encloses them. This achieves an optimal Xonter effect, which completely excludes the independent loosening of the screw and the compression sleeve nut.

The advantages of the compression sleeve nut over existing ones Types of counter-locking are: The compression sleeve nut can be used several times without to lose its impact.

The ferrule nut leaves no scratches or scoring the workpiece after removal / as it is the Pall with spring washers /.

The ferrule nut can be attached in one step / If you have a lock nut, you have to tighten two nuts one after the other /.

Since the squeezing element / sleeve / is exactly the thread turns of the screw adapts and tightly encloses the screw, is an independent loosening of the crimp sleeve nut not possible.

Even if the crimp sleeve nut is no longer in contact with the workpiece, kanzL they cannot be removed without a tool / open-end wrench, ratchet /.

"Creation possibility" The compression sleeve nut can be used without any size technical effort can be produced.

The upper sleeve can be deep-drawn on a press, after which it must they are spotted under a mother.

After the points together, the nut and the upper sleeve must be at the same time the thread can be cut.

The crimp sleeve can be made from an already prefabricated / with a through hole / Rod of the elastic material can be sawn off to the correct length.

The lower sleeve can also be deep-drawn on a press.

The holes are punched into the upper and lower sleeves before deep drawing.

Claims (1)

Patent claims I, Radanovi # Svetozar, residing in Bozenerstrasse 35, in 5650 Solingen I, would like my invention with the designation "crimp sleeve nut" It consists of three related parts I would like to have patent protection I / upper sleeve with a hexagonal head and thread. 2 / pinch sleeve with a central hole. 3 / U (terhiilse with a hole. The upper pinch sleeve and the lower sleeve each have a triangular shape of the same size Projection to prevent the individual parts from spinning.)