SU1485443A1 - Electronic unit - Google Patents

Description

The invention relates to electronics, in particular to the means of fixing printed circuit boards in blocks of electronic equipment. The purpose of the invention is to improve the manufacturability of the design, unification, reliability under the influence of vibration loads. Installing a PCB 12 or PCB Pack

on bearing basis 1 at assembly

block produce in the following order. The stud 2, attached to the base 1 through a T-shaped support 3, on which the bracket 5 with a saw-tooth spring 6 and the L-shaped clamp 7 is pivotally attached, is worn a printed circuit board or a pack of printed circuit boards through removable parts 14 in the form of tubular elements with flanges 15 , snap the springs 6 around them and, pulling the spring 8 off the L-shaped clamp 7, align its hole with the cylindrical part of the tubular element, lower the L-shaped clamp 7. At the same time, the springs 6 rigidly fix the board 12 or the board pack, preventing them from shifting in the vertical directed SRI, and studs to increase rigidity. Removing the printed circuit board 12 or the board pack from the device is performed in the reverse order. 4 hp f-ly,

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The invention relates to electronics, to the means of fastening printed circuit boards.

The purpose of the invention is to increase reliability under the influence of vibration loads, processability and degree of unification of the structure.

Figure 1 and 2 shows the electronic unit, a General view; in FIG. 3, view A in FIG. 2; figure 4 - package boards; figure 5 is a section bB in figure 2; figure 6 - section bb In fig.2k

The electronic unit contains 15 carrier base 1, on which a T-shaped support 3 is fastened with the help of a stud 2, on which with the help of axis 4 a guide is installed, made in the form of a bracket 5, on one side of which 20 plate springs 6 of sawtooth cross-section are fixed; the other is an L-shaped clamp 7, which is pressed against the upper end of the bracket by means of a spring 8, 25

the force of which is regulated by the nut 9. In the shoulder 10 of the sticking hole 11 is made. On the printed circuit boards 12 or the package 13 of the boards, removable parts 14 are fastened in the form of tubular elements with flanges 15.

A printed circuit board 12 or a pack of boards 13 are mounted on the studs 2, securing the T-shaped support 3 to the base 1 of the electronic unit through the removable parts 14 mounted on the boards, turn the bracket 5 until the springs 6 are joined to the cylindrical part of the removable part 14 and the stop in the flange 15 is lifted up and turned around the L-shaped clamp 7, combining the hole 11 with the cylindrical part of the removable part 14, and lowered the L-shaped clamp.

Removing the PCB or package of cards from the device is performed in the reverse order.

Claims (5)

Claim 1. An electronic unit containing a carrier base, a package of parallel printed circuit boards arranged on it, pivotally mounted relative to the support base of brackets with elements of $$ gearing with printed circuit boards, made in the form of plate springs placed on one ends of the brackets with the possibility of returning translational movement along their longitudinal geometrical axes and rotation relative to them is L-shaped hinges with spring-loaded latches, characterized in that, in order to increase the In terms of exposure to vibration loads, manufacturability and degree of unification, the supporting base is provided with T-shaped support elements rigidly fixed only by the ends of horizontal shelves on the supporting base, and each printed circuit board is provided with tubular elements rigidly fixed on it with co-axes located between each other and the other ends of the horizontal shelves of the respective supporting elements along the longitudinal geometrical axes of the respective 'brackets, moreover zhdy bracket pivotally connected at the other end to the corresponding vertical flange of the support member to engage its leaf springs with side surfaces of the respective tubular elements and the L-shaped side surface stuck with the corresponding external tubular element to be fixed. 2. Block pop. 1, characterized in that the horizontal shelves of the supporting elements in the supporting base in the L-shaped brackets brackets are made through holes, and rigid connections of the corresponding tubular elements of the printed circuit boards between themselves and with the horizontal shelf of the corresponding support element, as well as each the support element with the bearing base is made in the form of studs located in the channels, which are formed by coaxially arranged holes of the corresponding tubular elements, supporting elements of the carrier based OI and L-shaped. tacks, and fixed with one end on the outer side of the supporting base, and the outer tubular elements of printed circuit boards are located in the holes of the L-shaped tacks corresponding brackets. 3. The block in PP.1 and 2, which is based on the fact that the tubular elements of printed circuit boards are located on one of two opposite five wrestling edges, printed circuit boards are installed perpendicular to the supporting base, with each bracket oriented longitudinal geometric axis and the geometric axis of the hinge with a vertical shelf of the corresponding support element relative to the plane of the corresponding printed circuit board, respectively, parallel and perpendicular. 4. The block according to PP.1 and 2, which is based on the fact that the tubular elements of printed circuit boards are located between the printed circuit boards on one of them 1485443 6 on each side, the circuit boards are installed parallel to the base plate, with each bracket oriented longitudinal geometric 5 h "'and koi axis and geometrical axis of its articulated joint with a vertical shelf of the corresponding support element relative to the plane of the disposition of the corresponding printed circuit board, respectively, perpendicular and parallel. 5. Block 'by p. 3, which differs from me in that the package of parallel boards is made in the form of a book construction. 1485443 Vidl FIG, δ Physical.ch 1485443 B-5 11 Ya0G Phage. five dv