Mechanical fixing system for aeronautical display device

Abstract

The general field of the invention is that of the display devices comprising a rectangular display screen, said display device compatible with an aeronautical standard for mechanical interfacing with an instrument panel, said standard being defined by fixing positions and fixing means at said positions. The display device according to the invention comprises: two identical removable mechanical bars of a length equal to the length of the screen, each bar being arranged under one of the long sides of the screen, each bar comprising: first fixing means at said defined fixing positions, said first fixing means arranged so as to fix said bar on the instrument panel; two fixing holes, each fixing hole arranged at one of the ends of said bar, second fixing means making it possible to fix the display device in the four fixing holes of the two bars.

Claims

1. A display device comprising at least one rectangular display screen, said display device compatible with an aeronautical standard for mechanical interfacing with an instrument panel, said aeronautical standard comprising ARINC 739 entitled Multi Purpose Control and Display Unit and Interfaces, and said aeronautical standard being defined at least by fixing positions and fixing devices at said fixing positions, wherein the display device comprises: two identical removable mechanical bars of a length substantially equal to a length of the at least one rectangular display screen, each bar being arranged under one of the long sides of the at least one rectangular display screen, each bar comprising: three first fixing devices of identical quarter-turn screw type, a first fixing device situated at a first end of the bar, a second fixing device situated at a center of the bar, and a third fixing device situated at a second end of the bar, said three first fixing devices arranged so as to fix said bar on the instrument panel, and two fixing holes, each fixing hole arranged at one of the ends of said bar; second fixing devices to fix the display device in the four fixing holes of the two bars.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be better understood and other advantages will become apparent on reading the following description, given in a nonlimiting manner, and by virtue of the attached figures in which:

(2) FIG. 1 represents a front face of an aeronautical equipment item of MCDU type, said front face mounted in an instrument panel according to the prior art;

(3) FIG. 2 represents a front face of an aeronautical equipment item of MCDU type with large display screen, said front face mounted in an instrument panel according to the prior art;

(4) FIG. 3 represents a partial exploded view in perspective of an aeronautical equipment item with large display screen according to the invention;

(5) FIG. 4 represents a front face of an aeronautical equipment item of MCDU type with large display screen, said front face mounted in an instrument panel according to the invention.

DETAILED DESCRIPTION

(6) As a nonlimiting example, FIG. 3 represents a partial exploded view in perspective of an aeronautical equipment item 1 with large display screen according to the invention. This view represents the left side of the equipment item. The right side of the equipment item is perfectly symmetrical and comprises the same arrangements.

(7) The display device comprises a large display screen 11 mounted in a front face 14. The front face 14 contains all the electronic addressing devices as well as the display screen lighting means. These various means are not represented in FIG. 3. The current technologies make it possible to house these various means in a small thickness.

(8) This front face 14 is rectangular. It comprises, under the two longest sides, two identical removable mechanical bars 15 of a length substantially equal to the length of the display screen, each bar 15 being arranged under one of the long sides of the display screen. In FIG. 3, each bar is substantially in the form of an elongate bar of substantially square section.

(9) Each bar 15 comprises first fixing means 16 at the fixing positions defined by an aeronautical standard defining the mechanical fixing interfaces of the display device. As has been stated, the aeronautical standard can be, by way of example, the ARINC 739 standard entitled Multi Purpose Control and Display Unit and Interfaces.

(10) These first fixing means 16 are arranged so as to fix the bar on an aircraft instrument panel. In FIG. 3, these means are three quarter-turn screws of Zeus type arranged at the centre and at the two ends of the bar 15.

(11) Each bar also comprises two fixing holes 17 arranged at the ends of the bar. Second fixing means 18 make it possible to fix the display device in the four fixing holes of the two bars. In the present case, they are simple fixing screws.

(12) When the equipment item is being mounted, the bars are first of all fixed on the instrument panel at the corresponding positions then the aeronautical equipment item is fixed onto the bars. When the equipment item is removed, the mechanical bars can either be left in place or removed with the equipment item.

(13) As can be seen in FIG. 4, the width I.sub.V of the display screen can now be very close to the width I.sub.E of the display device. The siting is now limited only by the constraints of mechanical and electrical installation of a display screen in a display equipment item.

(14) Of course, the display device according to the invention can easily be adapted to other aeronautical standards and to a wide variety of aeronautical equipment items while remaining within the scope of this invention.