SU1688469A1 - Instrument housing - Google Patents

Abstract

The invention relates to radio engineering and can be used in the supporting structures of radioelectronic equipment, mainly of a dustproof and sealed design. The purpose of the invention is to improve the design technological effectiveness by the fact that in the instrument case containing the base 1, the cover 2 with the corners 3 fixed on it, the sealing cuff 5, the fastening screws 4 and the sealing elements 16, each corner 3 is designed as a segment profile in the form of a square with a bevel 15 and installed in such a way that its bevel 15 faces the cuff 5, and each element 16 is made in the form of a strip of elastic material and is placed between the corresponding angle 3 and the base 1. 7 Il. (L

Description

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The invention relates to radio engineering and can be used in the design of supporting structures of electronic equipment, mainly dust-and-dust-proof and hermetic design.

The purpose of the invention is to improve the manufacturability of the structure through the use of standard profiles for the manufacture of enclosed parts while ensuring their location according to the invention.

Figure 1 shows the instrument case, a general view (disassembled in axonometric view); figure 2 is the same, side view; on fig.Z - section aa in figure 2; Figures 4 to 7 show variations in the cross-sectional area of the sealing cuff.

The housing of the device consists of two component parts - U-shaped base 1 (figure 1) and cover 2 and assembled with connecting corners 3 and mounting screws 4.

The housing is equipped with a seal made of an elastic material in the form of a geometrically closed cuff 5 with a groove 6 in the form of a dovetail in cross section (Fig.4.7).

The cuff 5 by the groove 6 is mounted on the walls of the U-shaped base 1 along their perimeter in such a way that its working part 7 is placed and squeezed between the end surfaces 8 of the walls of the base 1 and the internal surfaces 9 of the walls of the U-shaped cover 2. At the same time the surface 10 of the working part 7 of the cuff 5 cuff to the surface 9 of the cover 2. And the supporting surface 11 of the working part of the cuff 5 is made width S, equal to the thickness Sy of the walls of the base 1, and pressed against its end surfaces 8.

The edges of the outer 12 and inner 13 surfaces of the walls of the U-shaped base 1 are covered by the side walls 14 of the cuff 5.

The groove 6 of the cuff 5 in cross section can also be made U-shaped (figure 5.6). However, it is preferable to make a groove in the form of a dovetail, since the side walls 14 of the cuff 5 at the same time better cover and trim the edges of the side surfaces 12,13 of the base 1.

The outer surface 10 of the working part 7 of the cuff 5 in cross section can be made radial

(surface formed by mating several radial surfaces, or in the form of a semicircle - Fig. 4), in the form of a triangle (Fig. 5), rectangular (see, Fig. 6) or in the form of a trapezium (see Fig. 7).

 The connecting corners 3 are mounted or fixed on the lid 2 (or base 1) by any known method (for example, using resistance spot welding). Each corner is made in the form of a section of the profile in the form of a square with a bevel 15 (for example, a section of an oblique profile of the channel section) and mounted on the cover 2 in such a way that it is oriented with the bevel 15 towards the sealing lip 5.

Korpu is equipped with sealing elements for fastening screws 4, each of which is made in the form of a flat gasket 16 and is placed between the corresponding angle 3 and the surface 13 of the base 1.

The gaskets 16 can be installed, for example, on the surface 17 of the corner 3 and are located under the cuff 5, a part of which is located inside the housing, placed in the cavity 18 formed by the bevel 15 of the corner 3, the surface 9 of the cover 2 and the surface 13 of the base 1.

Gaskets 16 provide sealing assembled on the screws 4 cases in the place of installation of the screws. At the same time, if necessary, blind corners 19 for screws 4 can be installed on the corners 3.

Sealing the joints of the base 1 and the cover 2 provides a sealing cuff 5.

The housing is assembled by covering the base 1 with the cover 2 and fixing their relative position by screwing the screws 4 through the holes in the base 1 into the threaded bushings 19 on the corners 3. In this case, on the base 1, the cuff 5 is pre-installed, and on the connecting corners 3 (or on the surface 13 bases 1) - flat gaskets 16 (if necessary, for example, on glue).

Making corners of the body in the form of profile sections in the form of a square with a bevel, as well as installing them with the bevel orientation towards the sealing cuff provided that the sealing elements are made in the form of gaskets placed between the respective corners and the corresponding component of the body, improved the manufacturability of the design of the latter.

Claims (1)

Invention Formula The instrument case, containing at least two components, interconnected by means of fixing screws, placed in the holes of one of the components and forming screw pairs with threaded holes, made in the corners fixed on the other component, is fitted with a sealing sleeve with its groove g at the end of the perimeter of the first component with the possibility of interaction of the second component facing towards it, and sealing elements of fastening screws, characterized in that, in order to improve the manufacturability of the design, each corner is made in the form of a segment a profile in the form of a square with a bevel, and each element of the seal is made in the form of a gasket from an elastic mother, ala, with each corner oriented with a bevel of a square of its profile in 5, the side of the sealing cuff, and each sealing element is positioned between the respective area and the first component. FIG. 3 FIG. t FIG. 6 FIG. five FIG. 7