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Locking nut and related fastener

A technology for locking nuts and nuts, which is applied in the direction of locking fasteners, threaded fasteners, nuts, etc., and can solve problems such as insufficient locking torque

Pending Publication Date: 2022-05-27
LISI AEROSPACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tightening torque suitable for this nut may therefore be insufficient

Method used

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  • Locking nut and related fastener
  • Locking nut and related fastener
  • Locking nut and related fastener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Figure 1 to Figure 4 A nut 10 according to an embodiment of the invention is shown. The nut is for assembly to the threaded rod 12 (see Figure 4 ) to form fastener 14.

[0021] The nut 10 includes a body 20 and an inner bore 22 extending through the body along a main axis 24 .

[0022] The body 20 of the nut includes: a bearing surface 30; a drive surface 32; a base 34; a locking collar 36;

[0023] The bearing surface 30 is for bearing on the structure 40 ( Figure 4 )on the surface. The bearing surface 30 is generally flat and perpendicular to the main axis 24 .

[0024] A drive surface 32 (or screw portion) extends around the main axis 24 and is used to tighten / unscrew the nut by means of a tool. The drive surface 32 will be described in more detail below.

[0025] An optional base 34 is provided between the drive surface 32 and the bearing surface 30 . The base has a generally frustoconical shape that tapers outwardly from the drive surface 32 .

[0026] ...

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PUM

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Abstract

The present invention relates to a locknut (10) and an associated fastener, the locknut comprising: a body (20) and an inner bore passing through the body along a main axis, the body comprising: a bearing surface (30); a drive surface (32); and at least one through hole (38) extending substantially perpendicular to the main axis from the radial drive surface. The body further comprises a locking sleeve ring (36) in an oval shape. And the drive surface comprises: an upper region (50) and a lower region (52) adjacent along the main axis, the lower region being located between the upper region and the bearing surface; the perimeter of the lower region around the main axis is greater than the perimeter of the upper region; the at least one through hole (38) extends from the upper region (50).

Description

technical field [0001] The present invention relates to a lock nut of this type comprising a body and an inner bore passing through the body along a main axis, the body comprising: a bearing surface substantially perpendicular to the main axis; a drive surface; and at least one through hole extending from the radial drive surface substantially perpendicular to the main axis. [0002] The present invention is particularly applicable to nuts used in aerospace fasteners. Background technique [0003] The purpose of locking screw / nut type fasteners is to prevent untimely loosening of the nut after the fastener is installed. Several locking methods are known. The first method, called "lock wiring," utilizes a wrap of wire to connect multiple fasteners, which is passed through a hole in each nut that passes through two adjacent drive surfaces. Therefore, the nuts are locked in sequence with each other. [0004] Another method of locking consists in deforming the driving surfac...

Claims

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Application Information

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IPC IPC(8): F16B37/00F16B39/20
CPCF16B37/00F16B39/20F16B39/101F16B39/284F16B39/30
Inventor 茹里安·戈耶尔巴托贝·索托-贝雷
Owner LISI AEROSPACE