SU1677400A1 - Shock absorber - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to protect equipment and instruments from vibration and shock. The aim of the invention is to increase the reliability due to the corresponding structural design. At small displacements of the protected device in any of the three directions, only the elastic element 1 operates. When the characteristics of the action change in the directions perpendicular to the axis of the sleeve 2, and the relative displacements increase, the gap between the additional elastic elements of the ring and the bracket 3 is increased. side or between the ring elements and the instrument case on the other. When this occurs, a sharp increase in the rigidity of the shock absorber and, consequently, an increase in the efficiency of depreciation. When oscillations in the direction parallel to the axis of the sleeve 2, when choosing the gap between the rings and the body of the elastic element 1, an increase in stiffness also occurs. 1 hp f-ly, 13 ill.

Description

Fig. /

The invention relates to mechanical engineering and can be used to protect equipment and instruments from vibration and shock.

The purpose of the invention is to increase reliability due to the corresponding constructive implementation of the shock absorber.

FIG. 1 shows a shock absorber with a bracket in the form of a bracket with edges bent inside (additional elastic rings are not shown); in fig. 2 - a version of the design with a flat plate bracket, side view; in fig. 3 - the same, top view (rings not shown); in fig. 4 - shock absorber with a bracket in the form of a frame, side view; in fig. 5 - the same, top view; in fig. 6 - shock absorber with bracket in the form of a bracket, side view; in fig. 7 - the same, top view; Fig, 8 is a variant of the design with an additional window in the central part of the bracket, top view; in fig. 9 shows an embodiment of a shock absorber with an additional protrusion at the beam and a bracket in the form of a frame, side view; in fig. 10 - the same, top view; in fig. 11 - a variant of the shock absorber with an additional protrusion at the beam and an additional window h bracket, side view; in fig. 12 - the same, top view; in fig. 13 is a variant with a bracket in the form of a bracket, the ends of which are cured in an elastic element.

The shock absorber contains an elastic element 1 of elastic material in the form of a beam consisting of two different-sized elbows arranged either at an angle to each other (Fig. 2, 3, 5, 7), or along a circular arc (Fig. 1 - 3, 8 - 13). In the center of the beam, the site of attachment to the object in the form of a sleeve 2 is ringing, and there are protrusions at the ends of the beam. The shock absorber contains a bracket 3 consisting of adjacent portions and provided with windows 4.

The bracket 3 interacts with the protrusions of the beam, which are located in the windows 4 and are attached to the surfaces of the bracket 3 adjacent to the windows 4. The shock absorber is fastened to the product using holes in the outer or central parts of the bracket 3. The shock absorber is fixed to the object using a bolt 5 skipped inside the sleeve 2 and washers 6. The ends of the sleeve 2 are placed limiters, additional elastic elements e in the form of two rings 7 made of elastic material (Fig. 1,2,3,9, 10,13, not shown limiters).

In the embodiment (FIGS. 2 and 3), the bracket 3 is a flat plate, in the corner of which a staple is made. The beam is located inside

the cut-out and attached to the bracket 3 by means of windows 4 and the adjacent surfaces of the bracket 3. It appears that this structure can be used

for amortization of circuit boards inside devices. In this case, it is easy to imagine a rectangular plate with four shock absorbers at the corners A with accessories mounted on the plate.

0V version of the design (Fig. 8) elastic

the shock absorber element 1 is bent along the arc of a circle, and the bracket 3 is made in the form of two shelves (not marked), which are angled to each other. At loose ends

There are 5 shelves with holes for attaching the shock absorber to the product. The opposite ends of the shelves smoothly mated with an elastic cushion 8 of elastic material. Conjugation can be made of the same material as the shelves, i.e. In this case, the entire bracket is made in the form of an L-shaped plate.

Then an elastic cushion 8 is placed on the outer surface of the bracket.

5B embodiment (Fig. 9 and 10)

the elastic element 1 of the shock absorber is provided with an additional protrusion 9 of elastic material connecting the central assembly 2 of the mount and the elastic cushion 8 through

0 window in the bracket 3. Here the bracket 3 is made in the form of a frame.

FIG. 10 and 11, the elastic element of the shock absorber is also provided with an additional protrusion, but the bracket has the shape of an L-shaped

5 plates. The shock absorbers (Fig. 12 and 13) brackets are made in the form of brackets.

The shock absorber works as follows.

At small displacements protected

0 device in love of the three mutually perpendicular directions works exclusively elastic element 1. When the characteristics of the impact in the directions perpendicular to the axis

5 of the sleeve 2, and an increase in the relative displacements, the gap between the additional elastic elements — rings 8 and the bracket 3 — is taken on one side or between the rings 8 and the instrument body on the other. When this occurs, a sharp increase in the rigidity of the shock absorber and, as a consequence, an increase in the efficiency of depreciation

Similarly, with vibrations in a direction parallel to the axis of the sleeve 2, when choosing a gap between the rings 8 and the body of the elastic element 1, an increase in stiffness also occurs.

In the absence of a travel stop, as well as, for some reason, the clearance

between the limiter and, for example, the bracket 3, will be smaller than the gap between the device and the surrounding parts, the elastic cushions 8 play the role of an elastic travel stop.

This design of the shock absorber allows to increase its spatial efficiency by changing the shape of the elastic element and the design of the reinforcement. The reduction in the size of the damping system and the possibility of placing shock absorbers in the corners of the devices make it possible to expand the sphere of their effective use.

Claims (2)

Claim 1. Absorber for installation between the product and the object, containing an elastic element of elastic material in the form 0 five 0 beams with protrusions at the ends and an attachment unit to an object in the form of a sleeve located in its center, an attachment unit to the product, a bracket consisting of adjoining sections and associated with the projections, characterized in that, in order to increase reliability, in the bracket the windows are made, the elastic element is connected to the inner surface of the bracket and its protrusions are passed through the windows, and the shock absorber is provided with additional elastic elements in the form of rings of elastic material installed on the side of the sleeve ends and coaxially with it. 2. The shock absorber according to claim 1, of which is equipped with cushions of elastic material connected to a part of the outer surface of the bracket and protrusions fig 2 fig.Z Ijj 1 h; (riz. 6 6 5 7 fiav one fie.9 oofrugi L o OI gpf 7 FIG 12