RU2520064C2 - Drawer guide equipped with grabbing hook - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: invention relates to a drawer guide containing a running rail whereon a grabbing hook is positioned that is intended for the drawer fixation on the running rail. He grabbing hook is made of a material other than that of the running rail and/or of a material thicker than the running rail; a resiliently compressible element or a spring element is envisaged between the grabbing hook and the running rail. Additionally conjugated with the grabbing hook is at least one support element intended for retaining the grabbing hook on the running rail.

EFFECT: invention enables development of a reliable grabbing hook that could be manufactured from simple structural means.

25 cl, 21 dwg

Description

The invention relates to a guide for drawers equipped with a running rail, the type of which is disclosed in the restrictive part of claim 1 of the claims.

DE 8431055 describes a gripping hook arched from a material constituting a running rail. However, in the case of drawers of very large width and large mass, a problem may arise in the deformation of such a gripping hook.

Patent EP 1147725 describes gripping hooks made in the form of elements separate from the running rail and arranged with height adjustment so that the inclination of the front panel of the drawer can be adjusted. Unfortunately, the gripping hooks disclosed in this patent are also poorly suited for securing heavy drawers.

In addition, it is known from DE 3641325 that an insert can be installed between the rear wall of the drawer and the gripping hook so that the running rail can also be used for smaller drawers that are essentially not designed for the dimensions of this running rail. However, this insert is not able to compensate for industrial tolerances corresponding to the currently available series drawer guide.

Thus, the first objective of the present invention is to develop a reliable gripping hook, which could be produced from simple structural means.

In addition, the invention is aimed at providing the ability to compensate for the specified gap between the gripping hook of the running rail and the drawer, due to industrial tolerance.

In view of the foregoing, the aim of the invention is to solve both of these problems in a simple constructive manner.

The first problem is solved by means of the object proposed in paragraph 1 of the claims. An alternative solution is given in paragraph 17.

The second problem is solved by means of the object proposed in paragraph 4 of the claims.

According to the invention according to claim 1, the gripping hook is completely different from the running rail, in particular more durable. For example, a gripping hook can be made of a harder material than the material of the running rail, and / or of a material of a greater thickness — in both cases, the strength of its structure can be increased in a very simple way. To obtain a particularly preferred design, it is necessary to use a combination of these two measures.

The gripping hook can be secured to the chassis rail in a variety of ways. In addition, the gripping hook can be placed on the running rail anywhere in its longitudinal direction. In this connection, reference should be made to FIG. 20, where a running rail is shown, in which a group of means is provided for fastening the individual gripping hooks, in particular windows displaced relative to each other in the main longitudinal direction of the running rail (X). Thanks to this solution, the same running rail can be used in a simple manner for fastening drawers of various depths and / or lengths. This may be appropriate, for example, when creating a drawer that is inserted into a piece of furniture only to a part of its depth. This option can be considered both as a separate invention, and as a development of the remaining disclosed inventions.

Particularly simple, but reliable, is the fastening of the hook in the fenestrated hole of the running rail, into which the gripping hook is bent and in which it is clamped by bending and / or extruding the corresponding protrusions.

It is particularly preferable to fasten the hook with the fitting into the window of the running rail, since this type of installation is the least costly and also provides the aforementioned advantage in that the materials do not heat up, due to which the running rails during installation, as a rule, are not curved and do not are deformed.

Alternatively, or in addition to the above, the gripping hook can be mounted on the running rail using other fasteners, for example a combination of bolt and nut, as well as riveting, conditioning, gluing, welding or soldering.

The gripping hook can be made of stainless material, such as stainless steel, providing long-term strength.

In order to compensate for the excessive clearance between the running rail and the drawer or its rear wall, in accordance with claim 4, at least one spring element or at least one resiliently compressible element is held on the gripping hook with the spring wall spring-loaded. .

This spring element is a preferred development of the present invention. However, it can also be a separate invention related to the locking element, which makes it possible to solve the problem of too large a gap between the drawer and the running rail, leading, for example, to clapping or noisy running.

In addition, in accordance with a particularly preferred embodiment of the invention, a reinforcing element and / or a supporting element, for example, a supporting rib or supporting shelf, are provided on it to increase the rigidity of the gripping hook. This option may also be a preferred development of the present invention or be considered as a separate invention.

Further, the invention is described in more detail on the example of specific options for its implementation, disclosed with reference to the attached drawings, in which:

figa-1e give various axonometric views of a running rail equipped with a gripping hook, as well as axonometric views of the gripping hook itself.

Figure 2 gives views similar to Figure 1, but related to an alternative embodiment of the invention.

Figure 3 gives views similar to figures 1 and 2, but related to the second alternative embodiment of the invention.

Figure 4 gives views similar to figures 1-3, but related to the third alternative embodiment of the invention.

Figure 5 gives various axonometric views of the fourth embodiment of the invention before and after the installation of the gripping hook.

6-9 depict other alternative embodiments of the invention before and after installing the gripping hook.

Figure 10 depicts a gripping hook, equipped with a spring element, before installation on the running rail and after it.

11 depicts another gripping hook, equipped with a spring element, before installation on the running rail and after it.

12a and 12b depict the structures shown in FIGS. 10 and 11 mounted on a drawer.

13 depicts a third gripping hook equipped with a spring element before installation on and after the rail.

Fig. 14 shows, before being mounted on and after the rail, another embodiment of a gripping hook equipped with a spring element, which is a development of the embodiment shown in Fig. 13.

15a and 15b depict the options shown in FIGS. 13 and 14 in a position mounted on a drawer.

16-19 depict gripping hooks provided with support elements corresponding to further embodiments of the invention.

FIGS. 20a, 20b, and 20c depict an additional installation of a gripping hook on a running rail.

21 shows a gripping hook provided with stamped protrusions according to another embodiment of the invention.

Figure 1 shows the running rail, which is part of the guide (the remaining elements of which are not shown here) for the drawer 2 (in this regard, see Fig. 15, concerning another example embodiment of the invention). The guide is preferably telescopic, but may have a different design. Usually it includes at least one rail mounted on the furniture body, a running rail 1 (see FIG. 1) fixed on a drawer, and at least one bearing, in particular a rolling bearing (also not shown here ), placed between the rail on the furniture body and the running rail 1. If necessary, the guide may have additional elements, for example, a middle rail.

To enable the drawer 2 to be fixed on the running rail 1, a gripping hook 3 is molded or mounted on this rail 1.

According to figure 1, the gripping hook 3 is made in the form of a separate element with respect to the rail 1 attached to the rail 1. This provides the advantage that the gripping hook 3 can be made more durable compared to the rest of the elements of the running rail 1.

Therefore, in order to increase the strength of the gripping hook 3, it can be made of a material different from the material of the running rail 1, in particular a more rigid material.

Alternatively, or as an addition to the above, in order to give the gripping hook 3 increased strength, it can be made of a material of a greater thickness than the running rail. In addition, the gripping hook 3 can be provided with stiffeners, for example ribs, and / or supporting elements that hold it on the running rail 1.

According to figure 1, the running rail 1 has the form of a hollow profile not closed around the perimeter, made of a sheet metal strip bent in the form of a guide of essentially rectangular cross section, with a longitudinal groove 4 being formed in it. On its contact side 5, facing the side opposite from the longitudinal groove 4, the rail 1 is flattened so that a drawer can be fitted to it.

On the contact side 5 there is a fenestrated hole 6 for securing the gripping hook 3 on the rail 1.

A hole 6 is formed near the free end of the running rail 1. In addition to the hole 6, an optional recess 7 can also be provided here, made on the free end of the guide 1 near the hole 6 and protruding into the contact side 5.

The gripping hook 3 is inserted into the hole 6 and can be fixed or pressed into the hole 6 so that on the side of the rail facing the opposite side from the longitudinal groove 4, it will protrude in the form of a substantially rectangular or L-shaped hook section 8, intended for engagement with the corresponding hole in the drawer, thereby thereby securing and fixing the box on the running rail 1.

In accordance with figure 1, this is realized due to the fact that the gripping hook 3, preferably bent from a sheet metal strip, has a Z-shaped, stepped shape, and in the installed state, the shelf 9 of the hook 3 enters the hole 6, and the free end 13 of the shelf 9 bends from the inside out to the recess 7.

In addition, as shown in FIG. 1, in the area of its middle shelf 12, the gripping hook 3 has lateral support flanges 10, 11, which are bent to the side opposite from the hook section 8 and, when installed, are supported from the outside by the contact side 5.

Due to the mutual action of the support shelves 10, 11 and the shelf 9 with a bent free end 13 included in the recess 7, the gripping hook 3 is simply attached to the running rail 1 with protection from displacement and rotation.

The free end of the hook section 8 can be made slightly tapering, which facilitates the insertion of the drawer.

If the gripping hook 3 is made of steel, it has a very high strength; therefore, it is possible to easily fix the heaviest drawers while protecting them from being disconnected from the running rail 1.

The embodiment of FIG. 2 generally corresponds to the embodiment of FIG. 1.

The support flanges shown in FIG. 1 are beveled, while in the embodiment shown in FIG. 2, the support flanges 10 and 11 have protrusions 14, 15 in the form of jumpers at their beveled ends, which when installed from the outside of the rail 1 on its contact side 5 protrudes beyond the free end of the rail in the recess area and bends down into the recess 7. Thus, these protrusions replace the curved end 13 of the shelf 9. In all other respects, i.e. in terms of design and purpose, this embodiment of the invention corresponds to the embodiment shown in FIG.

The embodiment of the invention shown in FIG. 3 differs from the embodiment shown in FIG. 1 in that at least one protrusion 16 is adjacent to the bent end 13, which completely passes through the recess 7 from the inside to the outside and from the outside of the contact side 5 bends back to this contact side 5, as a result of which the fixing action of the bent end 13, enhancing the fastening strength of the hook 3, is increased to an even greater extent, and in a very simple way.

The curved end preferably has at least one protrusion 16. The protrusions 16 are a simple structural measure to enhance the locking action and to optimize the fastening of the gripping hook 3 on the rail 1.

In contrast to Fig. 1, in the example shown in Fig. 3, the support flanges 10 and 11 are not bent in the direction opposite to the hook-shaped section 8, but simply rest on the running rail, continuing from the sides the plane of the flange 12.

However, an embodiment of the invention corresponding to FIG. 3 may also include support flanges similar to those shown in FIG. 1 or FIG. 2.

While the gripping hooks corresponding to the options shown in FIGS. 1-3 are bent from a sheet metal blank, in the embodiment shown in FIG. 4, the contour of the gripping hook 3 is cut from a sufficiently thick metal sheet, the main plane of which is not oriented perpendicularly the main longitudinal direction of the running rail 1, as in figure 1-3, and parallel to it.

In this case, the gripping hook 3 again has an L-shaped hook-shaped section 8, and at its end facing the opposite side from this section 8, contains a fixing shelf 17 having a groove, this shelf 17 being adapted to be inserted into the window opening 6 The gripping hook 3 is inserted into the opening hole 6 during installation, and then it is shifted in the lateral direction until the material of the contact side 5 of the guide 1 fits into the groove 18.

After that, the free end 19 of the gripping hook is again bent into a recess 7 provided on the free end of the contact side 5, as a result of which the gripping hook 3, like the examples shown in FIGS. 1 and 3, is protected from displacement in the longitudinal direction of the running rail.

The embodiment of the invention shown in FIG. 4 is characterized by a particularly robust hook-shaped section 8 having increased bending resistance.

However, the gripping hook 3 may be secured to the running rail in another manner.

In accordance with FIG. 5, it is proposed to use a riveted joint 20 for fastening the gripping hook 3, by which the contact shelf 21 of the gripping hook 3 is attached to the contact side 5. In the area of the contact shelf 21, the gripping hook 3 is made flattened or even. In contrast, in the hook zone, i.e. in the area of the hook-shaped section 8, the gripping hook has a grooved contour, due to which, again, the strength of the gripping hook 3 is easily increased.

According to Fig.6 to fix the gripping hook on the contact side 5 of the running rail is provided by soldering or welding. In this case, the gripping hook 3 again has a grooved contour on the hook-shaped section 8, and in the area of the contact flange 21 it has an even shape, which makes it easy to weld or solder onto the running rail.

According to Fig. 7, on the contact side 5 of the rail 1, it is proposed to fasten the contact shelf 21 having a window or hole 22 by means of a kind of fixing rivet 23 having an opening with a flange for riveting. In addition, according to Fig.7 hook-shaped section 8 again has a smooth contour.

As follows from Fig. 8, the gripping hook 3 can be obtained by cutting along the desired length of the rod bent in the shape of a hook, and this hook 3 can be attached to the contact side 5 of the rail 1 by welding.

An embodiment of fastening the gripping hook 3 to the contact side 5 of the rail 1 by welding is also shown in FIG. 9.

However, in contrast to the previous drawing, it is again proposed here to cut the hook-shaped section 8 from sheet metal and orient it essentially as shown in Fig. 4, i.e. for the most part, the main plane is parallel to the main longitudinal direction of the rail 1, and the contact shelf 21 is bent away from the hook section, and on the hook section 8, the grooved circuit 24 is bent in the same direction, facilitating the attachment of the gripping hook 3 to the corresponding drawer circuit.

Figure 10 shows a variant where the gripping hook 3 is paired with a spring element to compensate for tolerance.

The specified spring element is designed to create a prestressing force between the gripping hook 3 and the drawer 2.

According to figure 10, as in the previously described cases, on the running rail 1 is first attached a separate gripping hook 3, curved to a stepped form.

The gripping hook 3 has side jumpers 25, 26 that are encircled by the spring wire of the wire spring 27, the wire spring 27 resting on its running rail 28 with its arc portion 28. In addition, the wire spring has tabs 29, 30, which, as can be seen from FIG. 12a, in the installed state they abut against the drawer 3, and therefore, due to the spring action, they create a prestress between the running rail or the gripping hook 3 and the rear wall of the drawer 2.

This spring action can be created not by means of a wire spring, but by some other spring or elastic element, for example, by means of a meander-bent leaf spring 31 (see Fig. 11 and Fig. 12b) held between the flange 12 of the gripping hook 3 and the rear wall of the drawer 2, or by means of a coil spring 34 (Fig. 13), which exerts an elastic effect, for example, between the locking pin or prong 32 of the gripping hook 3, preferably curved from the rod or pin, and the washer 33 mounted on the volume of the gripping hook 3. The coil spring w presses the washer 33 against the drawer (figa).

In one case, one end of the coil spring 34 can be secured to the tooth 32. In another case, the free end of the hook-shaped portion of the gripping hook 3 made of a rod or pin can be threaded or the hook hook can be bent out of the threaded pin, as shown in FIG. 14, and screw on a threaded nut 36, forming an emphasis for the coil spring 34, adjustable in the axial direction (Fig. 14b). To prevent rotation, the knurled nut is provided with a clamping element or the clamping element is provided with a non-metallic insert. Alternatively, the lock nut may be made entirely of plastic. It is also possible in the form of a PAL-nut or the option of coating with a locking varnish.

Therefore, the elastic force acting on the drawer through the washer 33 can be easily adjusted or pre-set by adjusting the nut, in particular the thumb nut 36.

As can be seen from Figs. 12 and 13, the end of the threaded pin can not be welded to the running rail 1, but can be carried out in the axial direction through the fenestrated hole 37 formed by jumpers, and then, if necessary, also be fixed by compression.

FIG. 15 shows how a helical spring acts between the gripping hook 3 and the rear wall of the drawer 2, abutting against the tooth 32 or nut 36. FIG. 15a shows an unregulated variant, and FIG. 15b shows an adjustable variant of the gripping hook with adjustment by lenght.

Accordingly, it is possible in a very simple way to combine with each other the options "spring action between the gripping hook 3 and the rear wall of the drawer" and "a separate gripping hook 3 to increase strength".

However, only one of these two technical effects, i.e. apply spring action in the case of a gripping hook 3 bent from the material of the running rail 1 (not shown here), and use a separate gripping hook 3, made separately from the running rail, without a spring element. However, a combination of these two measures is particularly preferred.

In accordance with the options shown in Figs. 16-19 and 21, the gripping hook 3 is made / bent directly from the material of the running rail.

To this end, a tooth-shaped section is cut out of the material of the running rail 1 on the contact side 5, and then it is bent in the form of a gripping hook 3, as a result of which the L-shaped gripping hook protrudes from the rail material outside the contact side 5, in the opposite direction from the longitudinal groove . This embodiment of the gripping hook 3 is known in the art.

However, in addition to optimizing the hardening effect, it is provided on the side of the gripping hook 3 to leave a jumper made of the material of the running rail 1, acting as a support shelf 38 and extending in the direction opposite to the hook-shaped section.

Common to the embodiments of the invention shown in FIGS. 16-19 is that in them, the stiffening element is bent directly from the material constituting the running rail.

According to FIG. 16, the stiffener is one support flange 38. According to the embodiment of FIG. 17, two support flanges 38 are used, which are laterally adjacent to the flange 12 of the L-shaped hook. They are freely stamped from the material of the running rail and freely bent, which further enhances the holding effect and gives stability to the C-shaped gripping hook.

According to the variants of the invention shown in FIGS. 18 and 19, the support shelf 38 does not abut laterally to the shelf 12 of the hook section 8. Instead, the support shelf 38 is freely cut directly from the shelf 12, forming (for example, by means of two parallel slots in the shelf 12 extending beyond its end deep into the contact side 5) a support shelf / jumper 39, which extends at an acute angle less than 95 ° relative to the contact side 5 and is not parallel to the shelf, but supports it diagonally from the side opposite to the free hook the bottom end of the free section 8.

Due to the convex contours 40, 41, which can extend to the free end of the hook section 8, the support action of this support shelf 39 can be easily strengthened.

According to the embodiment of FIG. 21, instead of forming support flanges 39, the convex contour 40 is extended to the base of the gripping hook 3 with additional convex contour sections 42, 43. To increase the strength, the convex contour section 43 preferably has a wider width than the convex contour 40 at the top of the hook 3. The convex contour section 42 connects the convex contour 40 to the convex contour section 43, the width of the section 42 at its end facing section 43 corresponds to the width of the section 43 and continuously decreases in the direction of the convex contour 40 to the width of this contour 40. The gripping hook 3 is freely stamped and freely bent from the material of the running rail 1.

Common to the variants of the invention depicted in Figs. 16-19 and 21, is that they can be carried out at very low cost, and at the same time they have increased strength compared to gripping hooks without support elements or support shelves.

On figa-20C shows a gripping hook 3, which can be mounted on the principle of bayonet connection, i.e. by means of a locking rotary movement, and, in addition, in different places of the running rail 1.

Item Numbers

running rail one drawer 2 gripping hook 3 longitudinal groove four contact side 5 hole 6 notch 7 hook section 8 a shelf 9 support shelves 10, 11 a shelf 12 end 13 protrusions 14, 15 protrusion 16 fixing shelf 17 groove eighteen free end 19 riveted connection twenty contact shelf 21 hole 22 fixing rivet 23 circuit 24 jumpers 25, 26 wire spring 27 arc part 28 spring paws 29, 30 leaf spring 31 coil spring 34 locking pin 32 washer 33 coil spring 34 thread 35 knurled nut 36 terminal hole in the jumper 37 support shelves 38, 39 convex contours 40, 41

Claims (25)

1. A guide for drawers, comprising a running rail (1), on which a gripping hook (3) is located, intended for fastening the drawer to the running rail (1), moreover, this gripping hook (3) is made as a separate element fixed to travel rail (1) with bias protection, characterized in that the gripping hook is made of a material different from the material of the running rail and / or of a material of a greater thickness than the running rail (1), and between the gripping hook (3) and the running the rail (1) is provided elastically compressible element or spring element (28, 31, 34). 2. The guide according to claim 1, characterized in that the gripping hook is made of a harder material than the running rail (1). 3. The guide according to claim 1, characterized in that the spring element (28, 31, 34) is made adjustable. 4. The guide according to claim 3, characterized in that the spring element (28, 31, 34) is mounted on the gripping hook (3) with the possibility of adjustment. 5. A guide according to claim 4, characterized in that the spring element is held by an adjustable nut (36) screwed onto the threaded section (35) of the gripping hook (3). 6. A guide according to claim 5, characterized in that the spring element (28, 31, 34) is made in the form of a wire spring, a coil spring or a leaf spring. 7. A guide according to any one of claims 1, 3-6, characterized in that said gripping hook (3), made separate from the running rail, passes through its free shelf (9) through the fenestrated hole (6) in the rail (1). 8. A guide according to any one of claims 1, 3-6, characterized in that the free end (13) of the shelf (9) passing through the hole (6) in the running rail is fixed to the running rail (1) by bending or stamping. 9. A guide according to any one of claims 1, 3-6, characterized in that the gripping hook (3) is curved or cut out of a metal sheet in the shape of the letter Z. 10. A guide according to any one of claims 1, 3-6, characterized in that the plane of the metal sheet of the gripping hook (3) cut from the metal sheet in the shape of the letter Z is at least partially or completely oriented perpendicular to the main longitudinal direction of the running rail ( one). 11. A guide according to any one of claims 1, 3-6, characterized in that the plane of the metal sheet of the gripping hook (3) cut from the metal sheet in the shape of the letter Z is at least partially or completely oriented parallel to the main longitudinal direction of the running rail ( one). 12. A guide according to any one of claims 1, 3-6, characterized in that the gripping hook (3) is at least partially bent in the form of a groove to increase strength. 13. A rail according to any one of claims 1, 3-6, characterized in that the gripping hook (3) is fixed to the running rail by attachment or riveting. 14. A guide according to any one of claims 1, 3-6, characterized in that the gripping hook (3) is fixed to the running rail by rotational movement, in particular by means of a bayonet coupling. 15. A guide according to any one of claims 1, 3-6, characterized in that the gripping hook (3) is fixed to the running rail by welding. 16. A guide according to any one of claims 1, 3-6, characterized in that on the running rail (1) for securing a separate gripping hook, a group of means is provided, in particular windows, displaced relative to each other in the main longitudinal direction of the running rail (X) . 17. A guide for drawers, comprising a running rail (1), on which a gripping hook (3) is arranged for fastening the drawer to the running rail (1), characterized in that at least one reinforcing element is mated to the gripping hook and / or at least one support element designed to hold the gripping hook (3) on the running rail (1). 18. A guide according to claim 17, characterized in that said support element is made in the form of at least one support shelf (10, 11, 38, 39), which is adjacent to the flange (12) of the gripping hook (3) and bent relative to it to the position ensuring the retention of this shelf on the running rail (1). 19. A guide according to claim 18, characterized in that on the flange (12) of the gripping hook extending perpendicular to the running rail, two said supporting flanges are provided. 20. A guide according to any one of paragraphs.17-18, characterized in that said support flange or support flanges (10, 11, 38, 39) are bent in a direction facing in the opposite direction from the hook-shaped section (8) of the gripping hook (3) . 21. The guide according to any one of paragraphs.17-19, characterized in that the gripping hook and support elements are made in one piece. 22. A guide according to claim 21, characterized in that the gripping hook (3) and the supporting elements are made in one piece with the running rail. 23. A guide according to claim 17, characterized in that the gripping hook (3) and supporting elements are made separately from the running rail. 24. A guide according to claim 17, characterized in that said reinforcing element is made in the form of a convex contour (40, 41, 42, 43). 25. A guide according to claim 24, characterized in that said convex contour extends from the base of the gripping hook (3) located on the running rail to the free end (8) of the gripping hook (3).

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