SU1630000A1 - Radio electronic equipment unit - Google Patents

Description

The invention can be used in the design of electronic equipment containing fuel elements operating under shock and vibration loads "The goal is to simplify the design and increase the maintainability of the electronic unit" This is achieved

2

by the fact that the fixed strap NI 9 of the sub-block wedge-shaped fixation unit is made in the form of a T-shaped cross section and has protrusions 11 with inclined surfaces on the end surface of its vertical flange. "The width of the longitudinal rectangular groove and the shape of the recess 13. correspond to the T-shaped cross section and the projections 11 and 9" The mobile mounting of the NO 10 with a heat-removing tire 8 consists of a fixed part - a shelf-stop 14 and hydrochloric part - holder 15 rigidly connected to the LV 10 and has a threaded hole 16 in which a spindle 17 'movable connection ends NO 9 and 10 is designed as a flexible plate "1 s ₀ p" f-ly, 4 yl "

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The invention relates to electronics, in particular to the design of electronic equipment containing fuel elements and the element ^ exposed to shock and vibration loads _about

The purpose of the invention is to simplify the design and increase maintainability.

Figure 1 shows the electronic unit, a General view; figure 2 - node I in figure 1; Fig. 3 is a view A in Fig. 2 _(a heat-removing tire with a wedge fixation unit in the U-shaped groove in the sub-block undertime position; in Fig. 4 the same, in the clamped position.

The electronic unit consists of a housing 1 containing finned side panels 2, a front panel 3, a rear panel 4, and subunits 5. The side panels 2 of housing 1 have on the inner side grooves 6 of U-shaped ’shape, which are made with flat walls.

The subunit 5 consists of a printed circuit board 7, a flat heat-dissipating tire 8, with a wedge fixation unit made of two strips 9 and 10, with the plank 9 rigidly mounted on the heat-removing tire 8, has a T-shaped cross-section along the entire length and is provided with protrusions 11 sec. inclined surfaces on the end surface of its vertical flange, and the strip 10 is provided along the entire length of the guide with a longitudinal rectangular groove 12, at the bottom of which there are recesses 13, with the width of the guide groove 12 and the shape of the recesses

13 correspond respectively to the T-shaped section and the protrusions 11 of the bar 9. The movable mounting of the bar 10 with the heat-removing tire 8 consists of a fixed part — a flange-stop 14 and a movable part — a clip 15, rigidly connected to the bar 10 of the wedge fixation unit of the subblock 5 and provided with a threaded a hole 16 in which the lead screw 17 is installed, and the movable connection of the ends of the strips 9 and 10 is made in the form of a flexible plate 18.

The stationary part 14 is rigidly mounted on the heat sink bus 8 and is designed to hold the lead screw 17 and give it direction in order to avoid distortions. At assembly

Electronic unit (Fig.2-4) subunits 5 are installed in 11-shaped grooves 6 finned side panels 2 of housing 1.

When rotating the screw screw 17 due to the rigid connection of the movable part 15 with the bar 10 of the wedge fixation unit, the rotational movement of the screw screw 17 is converted into reciprocating movement of the bar 10, while the recesses 13 present in it, moving along the axis of rotation, due to the presence of a guide groove 12 interacting with projection 11 strap 9 having a T-shaped _{(cross-section,} are moved from the position in FIG .ukazannogo ₀ 4 in the position shown in fig.Z providing clamping action, wherein the surface of the heat sink bus 8 n otno adjacent to the wall surface of the corresponding U-shaped groove 6. For retention strap 10 is depressed for a flexible plate. With this arrangement the wedge lock assembly heat sink bus 8 can be used with different thickness.

Claims (2)

Claim 1. Electronic unit, comprising a housing with front and rear panels and side panels, on the external surfaces of which cooling fins are made, and on the internal surfaces - U-shaped grooves installed in the U-shaped grooves of the side panels of the body sub-blocks made on printed boards placed on heat-removing tires with shelves — stops with holes in them, and located between the heatsink tires of the subunits and the walls of U-shaped grooves of the side panels of the case opposite to them with the possibility of thermal contact with with them, wedge subblock fixation units, each of which is made in the form of two strips: a fixed plank with protrusions with inclined walls alternating with each other along its length and a movable plank with a longitudinal rectangular groove and alternating slots with inclined walls alternating with each other along its length corresponding to the protrusions of the stationary the strap connected at its one end with the shelf-stop of the heat-dissipating tire corresponds to 1630000 subblock with the possibility of reciprocating movement of its relatively fixed strap and the interaction of the working surfaces of the walls of its recesses with the corresponding working surfaces of the walls of the projections of the fixed strap by means of a movable connection, which is made in the form of a cage. , θ is a threaded hole installed coaxially with its threaded hole with a shelf-stop hole of the corresponding heat sink and rigidly connected to the corresponding end 15 of the movable bar, and a screw placed in said coaxial holes, characterized in that, in order to simplify the design and improve maintainability, The fixed-20 plank of each wedge subassembly fixation unit is made of a T-shaped cross section, and its protrusions are located on the end surface of the end of its vertical flange, the wall of the U-shaped enyh grooves sidebars housing and heat sink subblocks are flat tire, the width of the longitudinal rectangular groove movable slats of each narrow wedge zo The subblock fixing block is equal to the width of the vertical shelf of the fixed bar of the same wedge subblock fixing unit, and its recesses are placed at the bottom of its longitudinal rectangular groove, and the fixed bar of each subblock fixing block is rigidly fixed to the heat sink of the corresponding subblock, and the movable bar of the same wedge block fixing subunits installed with its longitudinal rectangular groove on the vertical shelf of the fixed plank and movably connected at its free end to the adjacent end fixed bar „ 2 ₀ Block of 1, characterized in that the movable connection of the free end of the movable plank with the adjacent end of the fixed plank of each wedge fixation unit of the sub-blocks between them is made in the form of a flexible plate, and as a movable screw of the end of the movable plank of each wedge fixation unit SUB-BLOCKS with a shelf-stop of the heat-removing tire of the corresponding sub-block are used by the RUNNING SCREW 1630000 1630000 Vidl Covered