Fastening element and fastening system

FIELD: fastening element for attaching an object to thin wall incapable of holding significant load, and also fastening system, which uses such a fastening element.

SUBSTANCE: fastening element for attaching an object to a thin wall, installed on the side of the wall, opposite to the side, onto which the element to be fastened is supposed to be installed, consists of a head, neck and leg, positioned one behind the other in axial direction. Neck circle has first radius. Leg has at least one skirt projecting beyond the circle with second radius, which is more than first radius. On a part of its perimeter the head has side shelves projecting beyond first radius, while suspension for element being fastened is made on the head. Fastening system includes a wall and at least one aforementioned fastening element with leg, head and skirt, inserted into wall window. The leg of the fastening element is on the first side of the wall, the head of fastening element is on the second side of the wall, the skirt of fastening element is adjacent to first side of the wall.

EFFECT: possible fastening of heavy objects to a wall with low lifting capacity, fastening element is simple, cheap and fast to mount.

2 cl, 14 dwg

 

The technical field

The present invention relates to a fastening element for attaching an object to a thin or unable to withstand significant load wall, and fastening system using a fastening element.

The level of technology

The need to attach items to the wall occurs, in particular, in the production of refrigeration units. Housing modern refrigeration units are usually of the outer wall of sheet steel or plastic and solid, made of a plastic sheet by the method of deep drawing, the interior of the container, between which there is a cavity filled with insulating foam. Internal device of the refrigeration unit must be fastened to the inner container, and the challenge is to direct the weight of these internal devices in the body casing comprising an inner container, insulating layer and outer skin so as not to overload and damage the inner container.

Telescopic sliding elements for pallets with a cooled products must be attached to this inner container so that they cannot be inadvertently fully extended, and that they could not nominated able to tip over forward. This can make the change, for example, screwing telescopic sliding elements to the walls of the inner container with the use of inserts from the side of the insulating layer. Since the entire load from the pallet with a cooled products must be sent to the wall through screws, there are large local stress. Overload pallets with a cooled products can therefore cause damage to the inner container, the restoration of which is unlikely to be economically justified.

To reduce the risk of damage to the interior of the container have been developed for suspension telescopic guides to better distribute the load on the internal wall of the container. Such pendants consist of a large number of parts and their installation requires a lot of time.

Disclosure of inventions

The purpose of this invention is to provide such a fastener that will allow you to fasten heavy objects on the wall with small capacity, and which is simple and cheap, consists of a small number of parts and easy installation.

The problem is solved fastening element with signs of paragraph 1 of the claims.

Installation of the proposed invention the fastening element can be accomplished by pushing his head through a non-circular opening in the wall, while the skirt to lie down first the second side wall, and subsequent rotation around its axis, so that the protrusions head out in hand for opening and adjoined to the second side wall. When this wall is clamped between the projections of the head with one hand and skirt with the other hand. The larger the diameter of the head, i.e. the farther removed from each other protrusions, the more the maximum leverage point that can affect the fastening element before there will be destruction of the wall.

The skirt should be preferably elastic, to ensure a solid fit of the holder even when the variation of the wall thickness.

If the skirt completely covers the opening, at the same time provides an insulating effect. This is especially desirable if the wall is an inner container refrigeration unit, as in this case, the skirt when filling body refrigeration unit foam can prevent the penetration of the foam into the interior.

Pendant attached to the subject preferably is provided passing through the aperture of the head, i.e. the fastening element is mounted on the side wall opposite the side on which should be mounted suspended object. It is also beneficial in the manufacture of refrigeration units, as it allows you to mount the fastening element with the more accessible outer staranimolinar container.

The skirt of the fastening element can be manufactured along with the head. If the leg of the fastening element consists of two parts: core and overlying the core body, the skirt may also be attached to the chassis, or the skirt may have a core and a shell.

Preferably the core and the housing are fixed to each other. While the core preferably has at least one latch that slides into the hole in the rear wall of the housing. To ensure a satisfactory sealing holes in a fixed position, the latch preferably preformulated the flange, which is in a fixed position locks the hole.

On the rear side of the telescopic guides used in the refrigeration units are usually provided two mounting hooks, one of which is oriented vertically for mounting on the side wall of the inner container near the door and the other is oriented horizontally for mounting on the side wall of the inner container near the back wall. To such telescopic rails can be fastened proposed in the invention fastening system, in the head of such a fastening element preferably should be a hole to enter such a hook.

The introductory hole in the head of the fastening element, in particular in the head of the cu is puegnago element for vertical hook it is advisable to position the side of elastically displaced inside the head of the stop body. It is with the introduction of the first hook is pushed into the head, but once the hook is set in final position, is returned under the action of elastic force to its original position, preventing inadvertent separation of the hook from the head.

The locking body is connected with the cylinder, preferably by means of a spring having the form of hairpins, both shoulders which are mainly parallel to the axis, i.e. perpendicular to the wall, in which is mounted fastening element. Such a spring can be easily made along with the head and shut-off body by casting under pressure.

A brief list of figures

Other characteristics and advantages of the invention ensue from the following description of examples of implementation with reference to the accompanying figures. The figures shown:

Figure 1 is a perspective image of the inside of the container refrigeration unit with telescopic guide rails attached to the proposed invention the fastening elements;

Figure 2 is similar to figure 1 a view of the inner container mounted on telescopic rails pallets for refrigerated products;

Figure 3 - telescopic guide on the inner wall of the container without crainiceanu;

Figure 4 is a telescopic guide, this time with the nuclei of two fasteners;

5 is a perspective projection of the two-part fastening element;

6 is the same telescopic guide, as in figure 3 and 4, this time mounted on the mounting device body;

Fig.7 is a perspective image in the front section of the fastening element from Fig.6 without walls and telescopic rail;

Fig - fastening element from 7 installed before him telescopic rail;

Fig.9 - fastening element in the grip telescopic tire;

Figure 10 is another view in partial section of the fastening element of Fig.7;

11 is a perspective image of the rear of the fastening element of Fig.6;

Fig - perspective image in the context of the rear fixing part of Fig.6;

Fig - view in plan section of the wall with two openings;

Fig - view in plan of the wall section installed in the openings of the fastening elements.

Disclosure of inventions

Figure 1 shows in perspective the image portion of the inner container 1 of the refrigerating unit application of the proposed invention the fastening element. On the side walls of the inner container 1 in pairs installed at different heights of the front and rear fastening elements 2, 3, pairs chosen to replace the e telescopic rails 4. On facing toward the observer side wall of the inner container 1 is only visible outside the legs of the fastening elements 2, 3, but not visible held them closed by the wall of the telescopic guides; remote from the observer side wall are visible only telescopic guides, but are not visible lock fasteners. Telescopic guides are designed for the installation of the retractable pallet 5 for the storage of refrigerated products, as shown in figure 2.

Figure 3 shows a perspective view corresponding to figures 1 and 2, the telescopic rail 4 facing toward the observer side surface 6 of the inner container 1, and to show the telescopic guide, the drawing shows only two sections of the side wall. On these sites there are openings 7 at the level of the mounting hooks 8, 9 of the telescopic rail 4. Front fastening hook 8 is facing down, and the rear hook 9 is turned to the rear wall of the inner container 1. The shape of the openings 7 is formed by four concentric circular segments, with opposite circular segments have the same radius, and the adjacent circular segments have different radii.

The first part 10 of the fastening element 2, hereinafter referred to as the inner part 10 is designed for placement in the opening 7,located on figure 3 in the front, depicted in figure 5. The inner part 10 has the shape of a Cup with a cylindrical outer wall 11 and the flange 12, which in the assembled condition, the inner part 10 facing the inside of the inner container 1. The radius of the cylindrical outer wall 11 corresponds to the smaller of the two radii of the aperture 7. The inner part 10 is divided in the direction of the axis into three parts: face the camera head 10A, the neck 10b and 10C nucleus, which, after installation of the inner part in place are located on the inner side of the side wall 6, the side wall 6 and with its outer side, respectively.

On the cylindrical periphery of the head 10A at the level of the end face 12 are two tabs 13 in the form of a belt extending from the outer wall 11 in the radial direction. The outer contour of the projections 13 has the shape of a circular arc, and the radius of the outer contour corresponds to the larger of the two radii of the aperture 7 so that the head 10A can be put through the opening 7 to be rotated by 90° relatively depicted in the figure 5 position.

The core 10C shall be located around the outer wall 11 of the conical skirt 14. The base of the cone facing the protrusions 13. The skirt 14 thin-walled, so that in contrast to the outer wall 11 and the protrusions 13 it can to some extent be subjected to elastic deformation. The distance between the projections 13 and the skirt 14, i.e. the length of the neck 10b is less than the thickness of said wall 6, so while pushing the head 10A through the opening 7 of the skirt 14 should be pressed so that the protrusions 13 can reach the inner side wall 6 and turning heads 10A covered the wall.

In order to facilitate the pushing of the head 10A, overcoming the elastic resistance of the skirt 14, the ends of the projections 13 may be provided with bevels 15. Facing the skirt 14 thickening 16 at the other end of the projections 13 forms a stop that defines the orientation of the inner part 10 after its rotation in the wall 6.

In the end 12 has a receiving hole 17 that is designed for fixing it front fastening hook 8 of the telescopic rail 4. The receiving hole 17 is open only in the lower part, the upper part is occupied by the locking body 18, the purpose of which will be explained later.

On the rear side of the core 10C preferovany two clamps 19, of which figure 5 is only visible one. The tabs 19 are locking tabs with pointing in opposite directions beveled surfaces 20 and flat links 21.

Figure 4 shows the inner part 10 and is similarly constructed inner portion 22 of the rear retaining element 3 mounted on the wall 6 position.

Figure 6 shows two of the fastening element 2, 3, installed through the nozzle housings 23 and 24 on the tabs 19.

The hull structure and its connection with the core shown in Fig.7. on the example of the front retaining element 2. 7 front fastening element 2 is shown with a remote wall 6 in a longitudinal slit in its middle plane.

The casing 23, as well as the inner part 10, has a cylindrical outer wall 25, which together with the rear wall 26 forms a glass. The cylindrical outer wall 25 of the housing 23 is not based directly on (not shown in the drawing) side wall 6, and ends at the base of the skirt 14 of the engine 10. To the housing 23 also relied on the side wall 6, on the outer wall 25 and in this case reformowana around the circumference of the elastic conical skirt 30, a large area of the base which is adjacent to the side wall 6. Thus, two skirts 14, 30 provide a flexible and impervious to the fluid pressure of the fastening element 2 to the wall 6, is insensitive to fluctuations in the thickness of the wall 6 and, as particularly well seen in Fig.9, reliably prevent the penetration recycled from the liquid starting components of the insulating foam inside the fixing element 2 along the wall 6.

Inserted into each other with their open sides of the glasses (internal) part 10 and the housing cover 23 of the cavity 27. This cavity 27 is designed to receive the front fastening of the hook 8 of the telescopic rail 4.

On Fig fastening element 2 and the telescopic rail 4 is depicted directly in front of her attachment to credit the panorama element 2. Aimed mainly vertically down the end of the fixing hook 8 is located opposite the locking body 18 head 10A. Vertical part of the hook 8 is higher than the open surface of the inlet opening 17. To enter the hook 8 into the receiving hole 17, the locking body 18 need to be pushed inside the cavity 27. This is possible because the locking body 18 is connected with the inner part 10 is not rigidly and elastically by a spring 28 having the form of hairpins. Therefore, the hook 8 can, overcoming the return force of the spring 28, to enter deeply enough into the cavity 27, and then the reverse movement of the hook in the end face 12. While the reverse movement of the locking body 18 is released and returns to its rest position flush with the end face 12.

The result is shown in Fig.9.

To re-release the hook 8 from the position shown in Fig.9, it would have to move up, but the locking body 18 allows it only as long until you close the gap between the shoulders 29 of the spring 28 having the form of hairpins. However, this progress is insufficient to release the hook 8 from the end face 12. Thus, the accidental release of the hook 8 is excluded. However, if necessary, telescopic guide to dismantle all the same. For this purpose, the locking body 18 need to press back using any sharp object, aprimoramento, you can enter into the opening from above at an angle between the wall 6 and the telescopic rail 4.

On the rear wall 26 of the housing 23 has two holes 33 for the passage of clamps 19. These openings with one edge limited protruding from the rear wall 26 of the ribs 31 (see Fig.6), the trailing edge of which come gearing 21 retainers 19. In order to prevent the penetration of foam in the holes 33, the tabs 19 provided with a shoulder (figures not shown)that are adjacent to the inner side of the rear wall 26 and close the apertures 33. The exhaust from the rear wall 26 of the wings 36 attached to the housing 23 for additional support after the installation of the refrigeration unit, they will be surrounded with insulating foam.

Figure 10 shows a modified version of the front retaining element 2', the wall 6, and a quarter of the housing 23' of the fastening element is cut off, so you can see the inner part 10'. On the drawing on the rear wall 26' of the housing 23' is clearly visible overlying the open part of the hole 33' flange 32'.

The important difference between this and the above option is that here on the inner part 10' is missing skirt. The fastening element is held only by the compressive force between the skirt 30' of the housing 23' and not visible in the drawing, the projections on the cylinder, the inner part 10'.

The protrusions of the inner part 10' can have tons of the same kind of form, as in figure 5. However, the lack of skirt allows you to enter the core 10' in the aperture 7 and the inner side wall 6. Therefore, the projections in this embodiment can be merged into a single edge around the perimeter, which will completely cover the opening 7 with the inner side wall 6. As the internal part 10' is fixed not by turning in the opening 7, it, as well as the aperture 7 may be of any, preferably not round section of the form.

Figure 11 shows in perspective view the inner part 22 of the rear fastening element on the inner side. The cylindrical outer wall summarized here in front of two powerful arms 34, the supporting protrusions 13. Between the brackets 34 is a vertical cross-bar 35, which is intended to cover the rear of the mounting hook 9 pull-out rail 4. Fixation of the hook 9 on the rear fastening element is not provided. It is not necessary, as the rear mounting hook 9 can get away from the fastening element 3, only when the forward hook 8 when separated from its fasteners. Therefore, in order to dismantle the telescopic guide 4 is sufficient to only unlock the front hook 8.

On Fig the same fastening element 3 is shown in perspective from above in a longitudinal section along the horizontal mid-plane. The drawing is visible covering the spars is 35 fastening hook 9, as well as capturing the tabs 19 of the ribs 31 of the housing 24. And here the hole 33, through which the tabs 19, locked adjacent the inside shoulder 32 at the base of the clamps 19.

On Fig shows a cutout of the side wall 6 of the refrigerating unit according to another variant of the invention. Shows two openings 7 in that the side wall 6, which have the same shape of cross section as the openings 7 in figure 3, with the only difference consisting in that the contour of the opening intended for installation in the rear of the fastener, i.e. the left of the opening 7 on Fig, rotated 90° relative to the right of the opening 7. It allows you to mount depicted in figure 5 of the inner part 10 and the corresponding depicted in Fig.6, the housing 23 in the two openings 7 are offset by 90°as shown in Fig. For fixing both of the hooks 8 and 9 of the telescopic rail mounting only one item type.

1. Fastening element for attaching an object to a thin wall, mounted on the side wall opposite the side on which should be mounted dock object consists of a head (10A), cervical (10b) and legs (10C, 23)arranged one behind the other in the direction of the axis (A), and neck circumference (10b) has a first radius, leg (10C, 23) has at least one protruding beyond the circumference of the skirt (4, 30) with a second radius that is larger than the first radius, and the head (10A) on the part of its perimeter is exposed for the first radius of the side tabs (13), the head (10A) is made pendant attached to the object.

2. The fastening element according to claim 1, characterized in that the skirt (14, 30) made of elastic.

3. The fastening element according to claim 1 or 2, characterized in that the skirt (14) made integral with the cylinder (10A).

4. The fastening element according to claim 3, characterized in that it has a second skirt (30)surrounding the skirt (14).

5. The fastening element according to claim 1 or 2, characterized in that the leg (10C, 23) consists of two parts: kernel (10C) and overlying the core (10C) of the housing (23).

6. The fastening element according to claim 5, characterized in that the housing (23) has a second skirt (30).

7. The fastening element according to claim 5, characterized in that the core (10C) and the housing (23) form a plug connection.

8. The fastening element according to claim 7, characterized in that the core (10C) has at least one retainer (19), which is passed through the hole (33) in the rear wall (26) of the housing (23), and in the fixed state, the flange (32) of the latch (19) closes the opening (33).

9. The fastening element according to claim 1 or 2, characterized in that the cylinder (10A) has an introduction opening (17) for the input device (8) suspended subject (4).

10. The fastening element according to claim 9, characterized in that in the introductory hole (17) from ogino elastically displaced inward of the fastener locking body (18).

11. The fastening element according to claim 10, characterized in that the locking body (18) is attached to the head (10A) by a spring (28), having the form of hairpins.

12. The mounting system includes a wall (6) and at least one inserted into the opening (7) of the wall (6) of the fastening element with a leg, a head and a skirt, and leg (10C, 23) of the fastening element is located on the first side wall (6), head (10A) of the fastening element is located on the second side wall (6) and the skirt (14, 30) of the fastening element adjacent to the first side wall (6), the fastening element made in accordance with one of claims 1 to 11.

13. The system of item 12, characterized in that the cylinder (10A) is configured to rotate between a first position in which it passes through the opening (7), and a second position in which the protrusions (13) head (10A) come in hand for the opening (7) and adjacent to the second side wall (6).

14. The system according to item 12 or 13, characterized in that the skirt (14, 30) completely covers the opening (7).

15. The system according to item 12 or 13, characterized in that the perimeter of the opening (7) formed by concentric circular arcs with two different alternating radii.

16. The system according to item 12 or 13, characterized in that the wall is an inner container (1) refrigeration unit.

17. The system according to item 12 or 13, characterized in that the attached item (4) is retractable is upravlyaushaya.

18. System 17, characterized in that the sliding guide has one vertical (8) and one horizontal (9) hook, vertical hook (8) is included in the introductory hole (17) of the fastening element (2)and a horizontal hook (9) is included in the fastening element (3)without blocking.



 

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