SU886340A1 - Device for withdrawing and fixation of radio electronic units - Google Patents

Description

(54) DEVICE FOR IMPLEMENTATION AND FIXING OF RADIO ELECTRONIC BLOCKS

one

FIELD: engineering.

A device for extending and fixing blocks, a chassis, guides arranged on it, and a fixing unit, made in the form of a group latch 1, are known.

However, the known device does not provide sufficient reliability of fixation due to large loads acting on the fastening screws. In addition, this device does not contain a block for cutting block vrubnyh blocks ..

Closest to the proposed. technically, a device for extending and fixing electronic units, comprising a pivoting lever with a grip on the end, hinged at its other end on a stand, and a spring-loaded latch mounted on block 2.

However, the known device does not provide sufficiently reliable operation and convenience of operation, since blocking of the block is possible when it is extended, since the force / force required to lift the block is applied asymmetrically to the horizontal axis of the block; d, which creates a torque with respect to the guides.

In addition, the blocks require large labor costs in the manufacture, since the fixation device is performed separately for each block.

The purpose of the invention is to increase the reliability of work and the convenience of operation by eliminating blocking of the blocks when extending and extending the functionality.

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This goal is achieved by the fact that the device contains a rotary lever with a grip on the end, hinged by another

15 end on the rack, and a spring-loaded latch mounted on the rack, is equipped with an additional pivot arm with a grip on the end symmetrically placed on the rack relative to the main pivot lever, an additional spring-loaded latch, symmetrically located on the block relative to the main spring-loaded latch, a barbell and two

25 symmetrical strips, on each lever there is a longitudinal hole, each bar with one of its ends is hinged on the stand, and the tail is installed with its ends

30 in the longitudinal grooves of the levers and connect with the other ends of the symmetrical strips.

In addition, it is equipped with mounted on the puller unit, and the rod is located under the puller with the ability to interact with it.

FIG. 1 shows a device for extending and fixing electronic units in the closed position; in fig. 2 - the same, with the extended position of the blocks; in fig. 3 - the position of the rod in the initial and intermediate positions during movement.

Device for extension and fic; The blocking unit contains a mechanism that consists of a pivot arm 1, an additional pivot arm 2 with longitudinal grooves 3, pivot symmetrical strips 4 and a rod 5, which, passing through the grooves 3 of the rotary levers 1 and 2, connects the pivot symmetrical strips 4. In the lower part of the pivoting levers 1 and 2 are made shaped grooves b, limiting the course of the levers 1 and 2, and hence the rod 5.

In the upper part of the pivoting lever 1 there is a protrusion 7 serving as a control handle and a grip 8 with a beveled face section for engaging the pivoting lever 1 with a spring-loaded figure latch 9 with a spring 10 and a protrusion 11, an additional latch 12 identical to the latch 9 which is symmetrically fixed on the block 13, on which the holes 14 are made for the puller 15, while the pivoting levers 1 and 2 are hinged on the stand 16.

The device works as follows.

In the closed state, the blocks 13 are inserted into the rack 16 and pushed as far as they will go. The pivot levers 1 and 2 are lifted up and locked. When this bar 5 presses all blocks 13 to the rack 16, the grip 8 of each swivel arm 1 and 2 with its inner side interacts with the outer side of the latches 9 and 12, which ensures reliable operation of the device.

To open the device, I must latch on the latches 9 and 12 and move the pivot levers 1 and 2 with the bar 5, the boom 5 itself, moving along the longitudinal grooves 3 of the pivoting levers 1 and 2, going down and making room for removing the blocks 13. The pivoting movement levers 1 and 2 in the lower part is limited to figured grooves 6.

If you need to push one or more blocks 13, you need to install pullers 15 in the holes of 14 blocks 13, and then, pressing the latches 9 and 12, turn the swivel levers 1 and 2 towards you to the stop. As a result, the rod 5 will press on the puller 15 inserted into the block 13 and, moving along the longitudinal grooves 3 of the pivoting levers 1 and 2, will move in an arc and will push the blocks 13 to distance E. Since the action of the rod 5 on the puller 15 is carried out in the region of the horizontal axis of symmetry of the blocks 13, thereby jamming the blocks 13 in guides (not shown) of the rack 16 is eliminated.

The bar 5, thanks to the shaped grooves 6 of the levers 1 and 2, occupies the lowest position, after which the pullers 15 remove the blocks 13 and take out the rack section 16.

The use of the invention eliminates blocking of the blocks during dismemberment, i.e. reliability of operation of the device is increased, convenience in its operation is created, the design of fixing units is simplified and the functionality of the device is expanded.

Claims (1)

1. The patent of France 2177847, cl. H 05 K 7/12, 1973. 1. USSR author's certificate W 463244, cl. H 05 K 5/00, 1975 65 (prototype).