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Deformable screw assembly

A technology of screw assembly and elastic deformation, applied in the field of deformable screw assembly

Inactive Publication Date: 2018-01-09
CENT TECHN DES IND MECANIQUES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, tensioning of the nut may be particularly prone to friction of the elastic washer and / or head against the component against which the elastic washer and / or head bears

Method used

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  • Deformable screw assembly
  • Deformable screw assembly
  • Deformable screw assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 A screw 10 is shown in side view comprising a threaded portion 12 forming a shank and comprising a head 14 at one of the ends of the screw 10 forming a shoulder 16 . also, figure 1 A flat washer 18 is depicted in , which rests against the shoulder 16 , while a tapered washer 20 is in contact with the flat washer 18 . According to another embodiment, the use of two conical washers is also envisaged, as will be clarified later in the description.

[0033] The washers 18, 20 are made of metal. The tapered washer 20 has an inner edge 22 positioned towards the central portion and opposite an outer edge 24 at the periphery. The flat washer 18 has a first threaded edge 26 that is opposite the threaded portion 12 of the screw 10 , while the tapered washer 20 has a second threaded edge 28 that is opposite the threaded portion 12 .

[0034] Unlike the deformable screw assembly according to the prior art, in which the elastic washer is compressed as the screw is progres...

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PUM

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Abstract

The invention relates to a screw assembly comprising, on the one hand, a longitudinal component (10) having two opposite ends and a threaded part (12; 42; 66) so that it can be connected by screwing to one of two elements (34), and, on the other hand, an elastically deformable member (18, 20; 48; 82) intended to be borne, in the axially compressed state, between one or other of the two opposite ends of said longitudinal component (10) and the other of said two elements. The assembly further comprises a retaining device (30; 54; 84) so as to be able to keep said elastically deformable member (18, 20; 48; 82) in compression and so as to be able to release it in said compressed state between said other of said two elements (32) and said one or said other of said two opposite ends.

Description

technical field [0001] The invention relates to a deformable screw assembly which makes it possible to apply a load between two elements in two directions opposite to each other. Background technique [0002] One envisaged field of application is in particular but not exclusively the field of assembling two elements. [0003] It is known practice to assemble two parts with holes using screws and nuts, and to place an elastic washer between the nut and one of the two parts. The screw has a head and a threaded shank, and thanks to the elastic washer, once the nut is tightened, the axial load of the threaded shank located in the nut is maintained regardless of deformation of the two parts or extension of the shank. Such an axial load thus makes it possible to increase the friction of the threaded shank inside the nut, thereby reducing in particular the risk of unscrewing. [0004] However, for certain types of assembly, a certain axial tension needs to be applied to the threa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B43/00F16B29/00F16B5/02
CPCF16B31/028F16B43/00
Inventor 艾蒂安·伊万克里斯托夫·戴查尔
Owner CENT TECHN DES IND MECANIQUES