RU210985U1 - DEVICE FOR PREPARING EYELASHES FOR EXTENSION - Google Patents

Abstract

) между кронштейном (17) и дополнительным кронштейном (21), вертикальная полка которого снабжена горизонтальным пазом (57), в котором размещен выполненный в виде штыря элемент управления (56) подвижным узлом (28). Также описаны другие признаки аппарата и связи между ними.8 з.п. ф-лы, 10 ил.

The utility model relates to the field of cosmetology, namely to auxiliary devices for preparing artificial eyelash extensions for natural ones. The task is to simplify the design, increase the versatility and ease of use of the apparatus for preparing eyelashes for extension. The apparatus for preparing eyelashes for extension (Fig. 2) contains an expansion element (2) with a pointed edge (3), a drive roller with the possibility of its rotation by a rotary element (6), a support element (13) for a hand and a base (1), on which the bracket is fixed, with a movable unit installed on it, provided with its control element (56) through a spring mechanism. The base (1) is box-shaped, inside which there is a bracket, an expansion element (2), a drive roller and a movable assembly with a spring mechanism, while the support element (13) for the hand is formed by the base (1). The base (1) also forms an additional support element (14) for the hand by making a U-shaped groove (12) at the top of the box-shaped base (1). The movable unit with a spring mechanism is located in the zone (

) between the bracket (17) and the additional bracket (21), the vertical shelf of which is provided with a horizontal groove (57), in which the control element (56) of the movable unit (28) is placed in the form of a pin. Other features of the apparatus and the connections between them are also described.8 c.p. f-ly, 10 ill.

Description

The utility model relates to the field of cosmetology, namely to auxiliary devices for extension of artificial eyelashes.

A known apparatus for preparing eyelashes for extension [Patent DE 102016122433, IPC A41G 5/02, priority 11/22/2018, published 05/24/2018], containing a profile and a drive made with the possibility of fixing them in the housing.

The drive consists of a wheel connected through a worm gear to a drive roller in the form of a sleeve, which is seated with the possibility of removal on the drive shaft of the worm gear. The profile is made with a functional edge and with the possibility of wrapping it with one end of a closed tape of elastic material, the second end of which is made with the possibility of wrapping the drive roller.

The closed tape on the outer side is made with the possibility of sticking a strip with a number of parallel artificial eyelashes on it.

The drive is made with the possibility of rotation of the closed belt around the functional edge, due to the rotation of the drive roller through the worm gear from the rotation of the wheel manually.

As a result, the possibility of a strong forced deflection (fluffing) of a part of the eyelashes passing in the zone of the functional edge is provided, which ensures the preparation of artificial eyelashes for their subsequent removal from there, for example, with tweezers, and extension to the client's natural eyelashes in a beauty salon.

The disadvantages of analogue [1] is the complexity of the process of removing part of the fluffy eyelashes from a closed tape, associated with the lack of support for the master's hand and, as a result, the location of its canopy, which leads to tension and discomfort of the master.

Another disadvantage is the complexity and low wear resistance of the rotation assembly associated with the presence of a worm gear, and the implementation of the rotation assembly by automated leads to the fact that the master does not directly interact with the rotation element. It does not have the possibility of uniform and smooth rotation of the drive roller and, as a result, there is no possibility of independent and precise adjustment of the position of the closed eyelash tape on the functional edge.

These shortcomings are eliminated in the apparatus for preparing eyelashes for extension [2, Patent RU 205010 U1, IPC A45D 44/00, priority 04/19/2021, published 06/22/2021], which contains a flat base, at least one support, made in the form a bracket in which an expansion element is fixed, having an acute angle, holding a rod, a drive roller in the form of a removable sleeve and a film. The device is also equipped with a hand rest and a movable plate with a lever. The removable sleeve is located on the holding rod and is equipped with a removable rotary element.

The holding rod is fixed in the movable plate and is engaged with the spring, which is fixed at the other end to the base. In this case, it is possible to simultaneously place a closed tape with eyelashes around the expansion element and the rotary sleeve.

However, the disadvantages of the prototype [2] are:

- low stability of the apparatus, especially on uneven surfaces, due to the flat base, which also does not provide the necessary strength characteristics of the product as a whole;

- the presence of an additional element, separate from the base, serving as a stand for the location of the hand, which complicates the design of the device;

- low ease of use due to the openness of the location of the driven elements - a movable plate with a lever and a spring, a swivel sleeve with a closed tape, which forces the master to carefully monitor so as not to touch these moving elements during eyelash fluffing and their subsequent removal tweezers;

- the complexity of the technology for performing work operations on such an apparatus due to the need to alternately remove the removable sleeve.

Therefore, the task of the utility model is to simplify the design, increase the versatility and ease of use of the apparatus for preparing eyelashes for extension.

The problem is solved by the fact that in the apparatus for preparing eyelashes for extension (Fig. 1-10), containing an expansion element (2) with a pointed edge (3), a drive roller (5) with the possibility of its rotation by a rotary element (6), a support element (13) for the hand and the base (1), on which the bracket (17) is fixed with the movable unit (28) installed on it, equipped with its control element (56) through the spring mechanism, there are distinctive features:

the base (1) is made of a box-shaped form, inside which there is a bracket (17), an expansion element (2), a drive roller (5) and a movable assembly (28) with a spring mechanism, while the support element (13) for the hand is formed by the base (1 ).

The implementation of the box-shaped base will increase both the stability of the apparatus and its strength characteristics, in comparison with the implementation of the base flat, as in the prototype [2].

The location inside the box-shaped base of the elements: a bracket, an expansion element, a drive roller and a movable assembly with a spring mechanism, is aimed at closing them with a kind of screen so that the master does not touch these movable elements during the fluffing of the eyelashes and their subsequent removal with tweezers, which will increase safety and ease of use of the product.

The formation of a support element for the hand by the base will make it possible to abandon the use, as in the prototype [2], of a special stand for this, which will simplify the product as a whole. In addition, the versatility of its use will also increase, since such a support element can be used for both right-handers and left-handers.

Additional distinctive features of the utility model aimed at enhancing the mentioned effects:

- the base (1) additionally forms another support element (14) for the hand by making a U-shaped groove (12) on the top of the box-shaped base (1) (to improve access when performing operations on the expansion element, as well as to form support zones for hands of both right-handers and left-handers in order to increase the versatility of the use of the device);

- the drive roller (5) is fixed at its one end with the possibility of rotation in the bracket (17), in which above the drive roller (5) and to the side of it, with the possibility of rotation, the rotary element connected to it by a friction loop harness (49) is fixed (6) located in the side groove (7) of the base (1) (to further improve the usability of the device when installed on it and on the sleeve of a closed tape with eyelashes, since it is not necessary to remove the rotary element, as in the prototype [2]);

- inside the base (1), a light source (27) is fixed (to improve visibility when performing operations on the expansion element, in order to increase the usability of the device);

- the base (1) is made of metal and near one of the corners of its upper part, behind the U-shaped groove (12), a removable container (16) is installed, made of metal with magnetic properties (to increase the strength properties of the base and to expand the versatility and ease of use of the apparatus, which allows placing in the mentioned container, near the working area, either glue or paint for processing artificial eyelashes);

- the box-shaped base (1) is made with side legs (15) bent inward, on which, by means of fastening screws (25) to the support bosses (26) located under the side legs (15), the bracket (17) is fixed and parallel to it additional bracket (21), made L-shaped, while the horizontal shelf of the additional bracket (21) is made of two stages, one stage (22) of which is located on the side legs (15) of the box-shaped base (1), and the other stage (23), already made, located below, between them (for the convenience and reliability of installing the device on any surface, including by fixing it with a belt that presses the device to the supporting surface through the second stage of its two-stage platform);

) между кронштейном (17) и дополнительным кронштейном (21), вертикальная полка которого снабжена горизонтальным пазом (57), в котором размещен элемент управления (56) подвижным узлом (28) (позволяет закрыть подвижный узел с пружинным механизмом от случайного соприкосновения с руками мастера или посторонними предметами, что повысит как безопасность эксплуатации аппарата, так и удобство его применения);- the movable unit (28) with a spring mechanism is located in the zone (

) between the bracket (17) and the additional bracket (21), the vertical shelf of which is provided with a horizontal groove (57), in which the control element (56) of the movable unit (28) is located (allows you to close the movable unit with a spring mechanism from accidental contact with the hands of the master or foreign objects, which will increase both the safety of operation of the device and the convenience of its use);

- the expansion element (2) is equipped with an additional sharpened edge (4) and a shaft (18) passed through the bracket (17) and the movable assembly (28) with screw (20) fixation in relation to the additional bracket (21) (to further increase the versatility application of the apparatus for fluffing eyelashes at various set angles of the edge of the expansion element, which will give the user the opportunity to use artificial eyelashes of any brand, size, thickness and a large number of their combinations);

- on the vertical shelf of the bracket (17), at the top on both sides of the shaft (18) of the expansion element (2), pins of small diameter (34) are fixed, below one of them - a pin of large diameter (35), and even lower, on both sides from the drive roller (5) - pins of medium diameter (36), in addition, the movable assembly (28) is formed from rear and front curved plates (42, 43), the front (42) of which is made with vertical elongated and shortened shelves (44 , 45), between which there is a horizontal shelf (46) at the bottom, and the vertical elongated shelf (44) of the front curved plate (42) of the movable assembly (28) is provided with vertical grooves (47), through which the mentioned pins (34-36) of the bracket are passed (17), while the pins of small diameter (34) are equipped with a washer (50) with a nut (51), providing a gap between the bracket (17) and the movable assembly (28), and are passed through a vertical shortened shelf (45) of the front bent plate ( 42) movable assembly (28), the ends of which are made with you mortars (52), and behind which the rear curved plate (43) of the movable assembly (28) is movably installed, equipped at its ends with curved hooks (53) and in one of the upper corners - with a ledge (54), in which a horizontal groove (55) is made ) enclosing the threaded end of a large-diameter pin (35) with a screwed nut (51) and washer (50) located behind the ledge (54) of the rear curved plate (43), and at the bottom of it, horizontal grooves (55) are also made from its two ends , covering the corresponding threaded ends of the pins of medium diameter (36), with screwed nuts (51), in addition, the spring mechanism of the movable unit is made in the form of two tension springs (29), the upper hooks of which are located on the pins of small diameter corresponding to them (34) , and the lower hooks - in the horizontal shelf (46) of the front curved plate (42), the movable unit (28), the control element (56) of which is made in the form of a pin, fixed on the rear curved plate (43) (to further increase the comfort The possibilities of using the apparatus due to the simpler implementation of the control of lowering and raising the expansion element on it by simply moving the control element of the movable unit in the form of a pin horizontally, in contrast to the complex, its rotary movement through the lever, as in the prototype [2]. In addition, to further increase the security of the movable unit with a spring mechanism, as well as to further increase the stability and strength of the structure of the apparatus as a whole and to simplify the control element of the movable unit).

The essence of the utility model is illustrated by illustrations, where:

- in Fig. 1 and 2 show general views of the apparatus for preparing eyelashes for extension (3/4 angle) from different sides;

- in Fig. 3-6 show views A, B, C, D, respectively, of such an apparatus in FIG. 2;

- in Fig. 7 and 8 show the inside of the apparatus without its box-shaped base, with a closed eyelash band installed on the expansion element and the drive roller, respectively, with the movable assembly with a spring mechanism lowered and raised;

- in Fig. 9 and 10 show a view E of said interior of the apparatus, respectively in FIG. 7 and 8.

The utility model apparatus (Fig. 1-6) is assembled on a box-shaped base 1, inside which there is an expansion element 2 with pointed edges 3, 4, a drive roller 5 with the possibility of its rotation by a rotary element 6, which is located in the side groove 7 of the base and emerges from it.

Conventionally, in Fig. 1, white dotted lines indicate a closed tape 8, not included in the apparatus device, for example, from a transparent PET film, which is put on with an interference fit on the expansion element 2 and on the drive roller 5. On the outer side of the closed tape 8, strips 9 with rows of parallel eyelashes 10 and with the possibility of obtaining fluffy eyelashes 11 from them, when they hit the pointed edge 3 of the expansion element 2 in the case of rotation of the drive roller 5.

In the upper part of the box-shaped base 1, above the expansion element 2, a U-shaped groove 12 is made, above which the pointed edge 3 of the expansion element 2 protrudes.

The base 1, due to the U-shaped groove 8, formed the support element 13 and additional support element 14, respectively, for the right-handed and left-handed hands.

The base 1 at the bottom has side legs 15 bent inside its box-shaped form.

Base 1 is preferably made of metal. Near one of the corners of its upper part, behind the U-shaped groove 8, there is a removable container 16 made of metal with magnetic properties or equipped with an element (not shown) made of metal with magnetic properties from below.

Inside the box-shaped base 1, a bracket 17 is fixed, made of an L-shaped shape, through which the shaft 18 of the expansion element 2 is passed, with its fixation by means of a screw 20 screwed into the shaft 18 and located in the U-shaped recess 19 of the top of the base 1 of the screw 20 in relation to the additional bracket 21, which is also L-shaped. Moreover, its horizontal shelf is made two-stage (Fig. 6), one stage 22 of which is located on the side paws 15 of the box-shaped base 1. Another stage 23, already made, is located lower between them. The mentioned steps pass into each other through an inclined transition 24.

To the side legs 15 of the box-shaped base 1 are attached (Fig. 3) step 22 of the horizontal shelf of the additional bracket 21 and the horizontal shelf of the bracket 17 by means of screws 25 screwed into the internal thread (not shown) of the support bosses 26 (there are four of them in Fig. 6) located under the side paws 15.

Thus, the supporting bosses 26 and the step 23 of the horizontal shelf of the additional bracket 21 can be installed on the selected surface (not shown). If necessary, through the said step 23 of the horizontal shelf of the additional bracket 21, it can be attached to such a surface with a belt (not shown).

Inside the box-shaped base 1, slightly below the pointed edge 3 of the expansion element 2, a light source 27 is fixed, for example, at least one LED (three pieces are shown in Fig. 1).

(зона условно выделена на фиг. 1, 2, 5 6 линиями из точек), между кронштейном 17 (фиг. 1) и дополнительным кронштейном 21 (фиг. 2) размещен подвижный узел 28 (на фиг. 7-10 он показан с расширительным элементом 2 и приводным роликом 5), но условно без основания 1 и дополнительного кронштейна 21 и др. позиций) с пружинным механизмом в виде двух пружин растяжения 29.Inside the box-shaped base 1 in the zone

(the zone is conditionally highlighted in Fig. 1, 2, 5 by 6 lines of dots), between the bracket 17 (Fig. 1) and the additional bracket 21 (Fig. 2) a movable unit 28 is placed (in Fig. 7-10 it is shown with an expansion element 2 and drive roller 5), but conditionally without base 1 and additional bracket 21, etc. positions) with a spring mechanism in the form of two tension springs 29.

The rotary element 6 is fixed on the axle 30, mounted for rotation in the guide 31, which is pressed by the nut 32 on one side of the vertical shelf of the bracket 17, and the cap 33 of which is located on its other side.

On the vertical shelf of the bracket 17, at the top on both sides of the shaft 18 of the expansion element 2, pins of small diameter 34 are fixed, below one of them - a pin of large diameter 35, and even lower - a drive roller 5, on both sides of which pins of medium diameter 36 are fixed .

Moreover, the pins of small diameter 34 are screwed into bushings 37, the caps 38 (Fig. 3) of which are located on the other side of the bracket 17. The pin of large diameter 35 (Fig. 7-10) is also fixed with its cap 39 (Fig. 3) on the bracket 17. Pins of medium diameter 36 (Fig. 7-10) are screwed into bushings 40 (Fig. 9, 10), caps 41 (Fig. 9, 10 and 3) which are located on the other side of the bracket 17.

The movable assembly 28 (Fig. 7-10) is formed from the front and rear bent plates 42, 43. The front bent plate 42 is made with vertical elongated and shortened shelves 44, 45, between which there is a horizontal shelf 46 at the bottom.

The vertical elongated shelf 44 of the front curved plate 42 of the movable unit 28 is provided with vertical grooves 47 through which the said pins 34-36 of the bracket 17 are passed. node 28. Moreover, such an axis 48 and the axis of the rotary element 6 are wrapped around with tension by the friction loop harness 49.

Pins of small diameter 34 at their threaded end are equipped with a washer 50 with a nut 51 to provide a gap between the bracket 17 and the movable unit 28 and are passed through a vertical shortened shelf 45 of the front curved plate 42 of the movable unit 28, the ends of which are made with protrusions 52, and behind which it is movable a rear bent plate 43 of the movable assembly 28 is installed, equipped with bent hooks 53 at its ends, and in one of the upper corners - with a protrusion 54, in which a horizontal groove 55 is made, covering the threaded end of the pin of large diameter 35 with the same screwed nut 51 through the washer 50 located behind the ledge 54 of the rear curved plate 43.

At the bottom of the rear curved plate 43 of the movable unit 28, horizontal grooves 55 are also made from its two ends, covering the corresponding threaded ends of the pins of average diameter 36 with the same nut 51 and washer 50 screwed on.

The upper hooks of the extension springs 29 of the spring mechanism of the movable unit 28 are located (Fig. 7, 8) on their respective pins of small diameter 34, and the lower hooks of the extension springs 29 (Fig. 9, 10) are fixed in the horizontal shelf 46 of the front curved plate 42 of the movable unit 28.

The control element 56 of the movable unit 28 is made in the form of a pin fixed on the rear curved plate 43 and passed through a horizontal groove 57 (Fig. 2, 4) in the vertical shelf of the additional bracket 21. Moreover, the said pin in the groove can occupy two extreme positions (according to dotted arrow) corresponding to the provisions of:

- the left extreme position (as in Fig. 2, 4), when the bent hooks 53 (Fig. 8) of the rear bent plate 43 are located in front of the protrusions 52 at the ends of the front bent plate 42, providing the largest gap a2 between the expansion element 2 and the drive roller 5 (Fig. 8, 10);

- the right extreme position, when the bent hooks 53 (Fig. 7) of the rear bent plate 43 are located on the mentioned protrusions 52, providing the smallest gap a1 between the expansion element 2 and the drive roller 5 (Fig. 7, 9).

Apply the apparatus for preparing eyelashes for extension as follows.

It is pre-installed on the selected surface at five points of support: on four support bosses 26 (Fig. 3, 4, 6) and on the stage 23 of the horizontal shelf of the additional bracket 21. If necessary, a belt (not shown) can be applied on top of the mentioned stage 23 , with which the device is fixed on the selected surface.

A removable container 16 is installed on top of the base 1 and glue is poured into it.

Next, the apparatus is prepared for installation on it of a closed tape 8 (Fig. 1) made of an elastic material. To do this, act on the pin of the control element 56 (Fig. 2, 4, 7-10), moving it (in Fig. 2 and 4 along the dotted arrow) to the right. As a result, the bent hooks 53 (Fig. 7) of the rear bent plate 43 will move to the protrusions 52 of the ends of the front bent plate 42. Therefore, the extension springs 29, also moving to the right and shortening in length, will raise the front bent plate 42 upwards together with the drive roller attached to it 5, providing the smallest gap a1 between the expansion element 2 and the drive roller 5 (Fig. 7, 9).

After that, a closed tape 8 (Fig. 1) made of an elastic material is freely installed with the circumference of the mentioned expansion element 2 and the drive roller 5.

To tension the closed tape 8, the pin of the control element 56 is again actuated (Fig. 2, 4, 7-10), moving it (in Fig. 2 and 4 along the dotted arrow) to the left. As a result, the folded hooks 53 (FIG. 8) of the rear folded plate 43 will displace from the protrusions 52 of the ends of the front folded plate 42 in front of them. Therefore, the extension springs 29, also moving to the left and increasing in length, will lower the front bent plate 42 down together with the drive roller 5 fixed on it, providing the largest gap a2 between the expansion element 2 and the drive roller 5 (Fig. 7, 9), thereby providing tension to the closed tape 8.

After that, a strip 9 with parallel eyelashes 10 is fixed on it (Fig. 1) with a sticky layer.

Further, a supporting hand with tweezers (not shown) is placed on one of the supporting elements 13 or 14 on top of the base 1, respectively, for a right-hander and a left-hander.

Then, by rotating the rotary element 6, the movement of the closed tape 8 together with the strips 9 is set. Passing through the pointed edge 3 of the expansion element 2, the parallel eyelashes 10 deviate, forming a fan of fluffy eyelashes 11, on the tips of which, using a brush (not shown), glue is applied from removable container 16. After the necessary exposure of the glue, the light source 27 is turned on and with tweezers (not shown) the fluffy eyelashes 11 are alternately removed from the strips 9 on the closed tape 8, their tips are transferred and pasted onto the tips of the patient's eyelashes (not shown).

To remove the closed tape 8, the pin of the control element 56 (Fig. 2, 4, 7-10) is moved back, moving it (in Fig. 2 and 4 along the dotted arrow) to the right. As a result, the bent hooks 53 (Fig. 7) of the rear bent plate 43 will move to the protrusions 52 of the ends of the front bent plate 42. Therefore, the extension springs 29, also moving to the right and shortening in length, will raise the front bent plate 42 upwards together with the drive roller attached to it 5, providing the smallest gap a1 between the expansion element 2 and the drive roller 5 (Fig. 7, 9). As a result, the closed tape 8 is freely removed.

If it is necessary to set a different angle to obtain fluffy eyelashes 11 of a different type than those described above, with the help of a screw 20, the expansion element 2 is released from fixation by turning it 180 degrees and ensuring the exchange of pointed edges 3 and 4. Then the expansion element 2 is fixed in preset position with screw 20.

Further, operations for the preparation of fluffy eyelashes 11, but already on the pointed edge 4 (not shown) of the expansion element 2, are carried out in the same way as on its pointed edge 3.

Sources of information:

1. Patent DE102016122433, IPC A41G 5/02, priority 11/22/2018, published 05/24/2018.

2. Patent RU 205010 U1, IPC A45D 44/00, priority 04/19/2021, published 06/22/2021 /Prototype/.

Attachment of the list of items to the application for patenting a utility model

"APPARATUS FOR PREPARING EYELASHES FOR EXTENSION"

The applicant - the author Mikhailova Yu.I. (BY)

Claims (9)

1. An apparatus for preparing eyelashes for extension, containing an expansion element with a pointed edge, a drive roller with the possibility of its rotation by a rotary element, a support element for the hand and a base on which the bracket is fixed, with a movable unit installed on it, provided with its control element through a spring a mechanism characterized in that the base is made of a box-shaped form, inside which there is a bracket, an expansion element, a drive roller and a movable assembly with a spring mechanism, while the supporting element for the hand is formed by the base. 2. Apparatus according to claim 1, characterized in that the base additionally forms another supporting element for the hand by making a U-shaped groove at the top of the box-shaped base. 3. Apparatus according to claim 1, characterized in that the drive roller is fixed at its one end with the possibility of rotation in the bracket, in which above the drive roller and to the side of it, with the possibility of rotation, a rotary element connected to it by a friction loop harness is fixed, located in the side groove of the base. 4. Apparatus according to claim 1, characterized in that a light source is fixed inside the base. 5. Apparatus according to claim 1, characterized in that the base is made of metal and near one of the corners of its upper part, behind the U-shaped groove, a removable container is installed, made of metal with magnetic properties. 6. Apparatus according to claim 1, characterized in that the box-shaped base is made with side legs bent inward, on which, by attaching screws to the support bosses located under the side legs, a bracket and an additional bracket parallel to it are fixed, made L-shaped , wherein the horizontal shelf of the additional bracket is made two-stage, one stage of which is located on the side legs of the box-shaped base, and the other stage, already made, is located below, between them. 7. Apparatus according to claim 6, characterized in that the movable unit with a spring mechanism is located in the zone (

) between the bracket and the additional bracket, the vertical shelf of which is provided with a horizontal groove in which the control element of the movable unit is located. 8. Apparatus according to claim 6, characterized in that the expansion element is provided with an additional pointed edge and a shaft passed through the bracket and the movable assembly with screw fixation in relation to the additional bracket. 9. Apparatus according to claim 8, characterized in that pins of small diameter are fixed on the vertical shelf of the bracket, at the top on both sides of the shaft of the expansion element, below one of them - a pin of large diameter, and even lower, on both sides of the drive roller - pins of medium diameter, in addition, the movable unit is formed from rear and front bent plates, the front of which is made with vertical elongated and shortened shelves, between which there is a horizontal shelf at the bottom, and the vertical elongated shelf of the front bent plate of the movable unit is provided with vertical grooves through which said bracket pins are omitted, while pins of small diameter are provided with a washer with a nut that provide a gap between the bracket and the movable unit, and are passed through a vertical shortened shelf of the front bent plate of the movable unit, the ends of which are made with protrusions, and behind which the rear bent plate of the movable unit is movably installed node equipped with at its ends with bent hooks and in one of the upper corners - with a protrusion in which a horizontal groove is made, enclosing the threaded end of a large-diameter pin with a screwed nut and washer located behind the protrusion of the rear bent plate, and at the bottom of it, horizontal grooves are also made from its two ends, covering the threaded ends of the pins of medium diameter corresponding to them, with a screwed nut, in addition, the spring mechanism of the movable unit is made in the form of two extension springs, the upper hooks of which are located on the pins of small diameter corresponding to them, and the lower hooks are in the horizontal shelf of the front bent plate, the movable node, the control element of which is made in the form of a pin, fixed on the rear curved plate.

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