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Positive locking fastener

An active and locking technology, applied in the direction of locking fasteners, threaded fasteners, connecting components, etc., can solve the problem of limited use of fasteners

Active Publication Date: 2020-06-19
LISI AEROSPACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Another disadvantage of the fastener is that it has a limited number of uses due to the crimping of the cover to the nut groove and the possibility of damaging the cover for removal with a puller , can only be used about two or three times

Method used

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Embodiment Construction

[0065] In this specification, the terms "bottom", "top", "horizontal" and "vertical" should be interpreted with reference to the arrangement of parts in the drawings and the relative orthogonal coordinate system (O, X, Y, Z), where The axis (OZ) is aligned with the longitudinal axis of the fastener.

[0066] The "vertical" direction is given in terms of the direction of the axis (OZ). Thus, any axis of the plane (OXY) can represent a "horizontal" direction.

[0067] The "bottom" of a part is different from the "top", which can be understood as the following components: its constituent points all have a lower z-coordinate, higher than the z-coordinate of the "top" constituent points, and are "lower" compared to the same part Location.

[0068] Such as Figure 1a with 1b As shown, a positive locking fastener of the present invention comprises:

[0069] - Fasteners, consisting of screws 1 and nuts 2, the two structural parts are fixed to each other forming a structural system...

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Abstract

The invention relates to a positive locking fastener comprising: - a screw (1) having a cavity (110) at a threaded portion (11); - a nut (2) having a tightening portion (21); - a first cap (3); - a second cap (4); and - a pin (5). The first cap is suitable for being inserted into the cavity of the threaded portion. The second cap has a locking portion (402) intended to engage with the first cap and a blocking portion (401) intended to engage with a tightening portion (21) of the nut. The locking portion of said second cap comprises openings (4020) suitable for allowing the pin to be inserted through said openings in order to hold the first cap and the second cap together. The invention also relates to a method for implementing the fastener according to the invention.

Description

technical field [0001] The invention belongs to the field of mechanical fasteners, in particular to an active locking fastener. Background technique [0002] Fixing by a threaded fastener structure system is prone to loosening of fasteners during use, which is usually caused by vibration. Active locking devices can be used to solve such problems. [0003] Brake wires are currently available to prevent loosening fastener problems due to vibration. The disadvantage of this type of brake wire is that it does not adequately limit the extent to which the fastener can loosen. [0004] European patent application EP 2 044 342 discloses a positive locking fastening system. The system includes screws, nuts, locking members with protruding threads, and connecting members. The screw includes an external thread and a through hole, which includes a corresponding thread, which can be used to provide the protruding thread of the locking member. When assembling the fastener, a nut is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B37/14F16B39/08
CPCF16B37/14F16B39/08
Inventor 茹里安·戈耶尔穆罕默德·阿布-铪利玛罗伊克·梅弗尔
Owner LISI AEROSPACE