The utility model belongs to the joints of elements of constructors sets, in particular to the connection of fixed and moving parts in sets of three-dimensional mechanical models, and can be used in the manufacture of children's, playing and souvenir constructor sets.

The protective shell of the power flat spring of as claimed provides maximum safety from unexpected opening of the power flat spring with the possibility of injury.

It is known that the sealing unit of the locking device comprising a sealing ring mounted in the seat of the element of the locking body, while in the seat made concentric annular conical surfaces, for example in the form of a spike and / or groove, and in the sealing ring made two conical surfaces corresponding to conical surfaces, and in the sealing ring or element of the locking body made drainage and ventilation channel provided with a cap [RU N° 94 030 567 Al, F16K 3/02 1996].

It is known that the connection node of at least two parts of the constructor, which contains two interacting elements of the connection, each of which is made on the corresponding part of the constructor, while one connecting element has a hole, while the connecting elements are made of elastic foam or foam rubber with an apparent density of 0.015-0.22 g / cm ³ , and the protrusion is placed in a hole with tension [RU N° 17446 U1 A63H 33/08 2001].

It is known that the connection node of at least two parts of the constructor, which contains two interacting elements of the connection, each of which is made on the corresponding part of the constructor, and the clamping element, one connecting element has a hole and the other a protrusion U-shaped, both elements of the connection are made of elastic foam or rubber with an imaginary density of 0.015-0.22 g / cm , and are installed with tension. The protrusion of the connecting element is installed by the outer surfaces of the side shelves in the hole of the connecting element, and the clamping element is installed between the inner surfaces of the side shelves of the protrusion U-shaped [RU flb 22427 Ul, A63H 33/08, 2002] Closest to the utility model, of the claimed, there is a connection node of at least two parts of the constructor, which contains two interacting elements of the connection, each of which is made on the corresponding part of the constructor, with one 2 the connecting element has a hole and the other has a protrusion. The connection elements are made of elastic foam or rubber with an apparent density of 0.015-0.22 g / cm ³ , the protrusion is made U-shaped, the upper shelf of which is located in the hole with tension with the possibility of covering the side shelves of the connection element with the hole [RU No 17449 Ul, A63H 33/08, 2001]

This element, like previous analogues, has a complex structure and insufficient efficiency in production.

The utility model is based on the task of creating a protective shell of the power flat spring, which would have a simple and strong design, would increase production efficiency, production speed and, consequently, production volume.

The task is solved by that that the protective casing of the power flat spring, which contains protrusions and holes, characterized in that it is a solid part with a bending membrane and with symmetrically arranged at least two protrusions with clamps on one side of the part to enter the fixing holes placed on the opposite side of the part, made with the possibility of bending in the direction of the axis of the part for fixing and protecting the power flat spring.

The protective shell can be made with three symmetrically arranged protrusions with clamps.

The clamps are made with the possibility of additional bending in the direction of the plane of the shell for reliable rigidity of the structure.

The protective shell contains a metal locking washer to secure the power flat spring.

The protective shell is made of sheet metal with a thickness of at least 0.1 mm.

The protective shell has technological openings of any form for economy of initial material. The claimed power flat spring shell, which is claimed, consists of one continuous stamped part, which leads to increased production efficiency, as instead of two parts, which are produced separately and then connected to each other, one is used. This also increases the speed of production and, consequently, the volume of production. The design of the protective shell is simple, strong and reliable.

The utility model is illustrated by drawings.

Figure 1 shows the protective shell of the power flat spring in the open state; figure 2 shows a frontal projection of the protective shell of the power flat spring in the folded state; figure 3 is a left view of the protective shell; figure 4 is a view of figure 3; figure 5 - protective shell in axonometry; figure 6 is an assembly of a protective shell with a power flat spring; figure 7 is a protective shell with a power flat spring in the folded state.

Symbols in the drawing:

1 - metal locking washer power flat spring;

2 - clamps of a protective shell;

3 - fixing holes of the protective shell;

4 - technological openings of any shape;

5 - bending membrane of the protective shell;

6 - power flat spring.

The protective shell of the power flat spring, made of sheet metal with a thickness of at least 0.1 mm, is a solid part with a bending membrane 5 and symmetrically arranged protrusions with clamps 2 on one side of the part to enter the fixing holes 3 located on the opposite side of the part. The protrusions are made with the possibility of bending in the direction of the axis of the part to fix the structure of the shell. The clamps 2 are made with the possibility of additional bending in the direction of the plane of the shell for reliable rigidity of the structure. The protective shell contains a metal locking washer 1 for securing the power flat spring 6. The protective shell also has technological openings 4 of any shape.

Figure 6 shows the assembly of the protective shell with a power flat spring. First, insert the metal locking washer 1 of the power flat spring 6 in the protective c shell. The membrane 5 is bent, and the protrusions with the clamps 2 are inserted into the fixation holes 3, and then the clamps 2 are bent.