QUICK-FASTENING SYSTEM FOR A TELESCOPIC EXTENSION

Abstract

A quick-fastening system for releasably mounting a telescopic extension on a body, the quick-fastening system including a retaining bar which is fixed or can be fixed to the body directly or by means of a side grid, and a rear quick-fastening element and a front quick-fastening element for positive or positive and non-positive engagement with the retaining bar.

Claims

1. A quick-fastening system suitable and adapted for releasably mounting a telescopic extension comprising a stationary rail member and at least one rail member movably supported relative to the stationary rail member, in a substantially horizontal orientation of the telescopic extension on a body, wherein the quick-fastening system comprises a retaining bar fixed or fixable to the body directly or by means of a side grid, and a rear quick-fastening element and a front quick-fastening element, wherein the rear and the front quick-fastening elements are fixed or can be fixed at a distance from one another in the pull-out direction of the telescopic extension and with the front quick-fastening element further in the pull-out direction than the rear quick-fastening element to the stationary rail element of the telescopic extension to be mounted on the body, and wherein the rear and the front quick-fastening elements are designed for positive or positive and force-fit engagement with the retaining bar for releasably mounting the telescopic extension on the retaining bar, wherein the retaining bar has a straight extending horizontal section and at opposite ends of the horizontal section respective end sections at opposite ends of the horizontal section, and wherein the horizontal section of the retaining bar has a cross-section perpendicular to its longitudinal extent which, when the horizontal section is oriented substantially horizontally, in its greatest extent has a height which is at least twice as great as its width perpendicular to the height, the rear and front quick-fastening elements each having the following features, defined with reference to the retaining bar when the quick-fastening elements are engaged with the retaining bar for releasably mounting the telescopic extension: a fixing plate for fixing the quick-fastening element to a surface of the stationary rail element of the telescopic extension, a support section extending from the fixing plate over the horizontal section of the retaining bar and supported thereon from above, a first securing section which extends vertically downwardly from the fixing plate on the rail side of the horizontal portion of the retaining bar and abuts the horizontal portion of the retaining bar on the rail side, a second securing section which adjoins the support section and extends vertically downwards on the body side of the horizontal section of the retaining bar and bears on the body side against the horizontal section of the retaining bar, wherein the rear quick-fastening element has an lift-out securing portion which is angled in the direction of the body side to join the first securing section and extends horizontally further in the insertion direction of the telescopic extension than the first securing section of the rear quick-fastening element, wherein the lift-out securing portion is vertically disposed at a height of the quick-fastening element so as to extend below the angled end portion of the retaining bar lying in the insertion direction when the rear quick-fastening element is positioned in a position on the retaining bar at which the first securing section abuts the angled end portion lying in the insertion direction.

2. The quick-fastening system according to claim 1, wherein the horizontal section of the retaining bar has one or more recesses or elevations on the rail side, on the body side or on the rail and body side, and the first securing section, the second securing section or both securing sections have embossments, bends or profiles complementary to the recesses or elevations for positive engagement.

3. The quick-fastening system according to claim 1, wherein the horizontal section of the retaining bar has a continuous cross-section perpendicular to its longitudinal extension.

4. The quick-fastening system according to claim 1, wherein the rear and front quick-fastening elements are of identical design.

5. The quick-fastening system according to claim 1, wherein the rear quick-fastening element, the front quick-fastening element or both quick-fastening elements are formed in one piece from a metal sheet.

6. The quick-fastening system according to claim 1, wherein the front quick-fastening element has a lift-out securing hook which is formed in a rigid connection with the first securing section on the body side and can be swung out in the direction of the body side in a resiliently restorable manner with respect to the fixing plate, the lift-out securing hook extending in sections under the horizontal section of the retaining bar in the direction of the rail side.

7. The quick-fastening system according to claim 1, wherein the fixing plate of the quick-fastening element abuts against a surface of the stationary rail element of the telescopic extension facing away from the movable rail element and is fastened thereto, preferably by welding, spot welding, riveting or screwing.

8. The quick-fastening system according to claim 1, wherein the system comprises a side grid provided and adapted to be fixed to a wall surface of the body, wherein said side grid comprises a first vertical grid bar and a second vertical grid bar spaced apart therefrom and arranged substantially parallel thereto, and wherein said side grid comprises at least one retaining bar or a plurality of retaining bars arranged one above the other in the vertical direction, and each of the end portions of a retaining bar angled relative to the horizontal section is fixed via its free end, which is not connected at an angle to the horizontal section, to a respective one of the vertical grid bars in such a way that the horizontal section of the retaining bar extends substantially perpendicularly to the vertical grid bars.

9. The quick-fastening system according to claim 8, wherein the system comprises at least one or more telescopic extensions, each of which has a stationary rail element and at least one rail element mounted so as to be movable relative to the stationary rail element, a rear and a front quick-fastening element being fixed to the stationary rail element of each telescopic extension.

Description

FIGURES

[0040] Further advantages, features and possible applications of the present invention will become clear from the following description of an embodiment according to the invention and the accompanying figures. In the figures, identical elements are designated by identical reference signs.

[0041] FIG. 1 shows a perspective view of an embodiment of the quick-fastening system according to the invention with a side grid and a telescopic extension mounted on a retaining bar according to the invention by means of quick-fastening elements according to the invention, viewed from obliquely above from the direction of the body side.

[0042] FIG. 2 shows a broken-away detail view of the embodiment according to FIG. 1 in the region of the front quick-fastening element, viewed from obliquely above from the direction of the body side.

[0043] FIG. 3 shows a broken-away detail view of the embodiment according to FIG. 1 in the area of the rear quick-fastening element, viewed from obliquely below from the direction of the body side.

[0044] FIG. 4 shows a view of a cross-section through the front quick-fastening element and the horizontal section, provided with a recess in this section, of the retaining bar of the embodiment according to FIG. 1.

[0045] FIG. 5 shows a view of a cross-section through the rear quick-fastening element and the horizontal section, not provided with a recess in this section, of the retaining bar of the embodiment according to FIG. 1.

[0046] FIG. 6 shows a view of a cross-section through an alternative embodiment of a front quick-fastening element with a lift-securing hook and the horizontal section of the retaining bar not provided with a recess in this section.

[0047] FIG. 7 shows views of the front quick-fastening element (identical in construction to the rear quick-fastening element) of the embodiment according to FIGS. 1 to 5 from different viewing directions: (a) from the front; (b) from the left, (c) from obliquely above on the right; (d) from obliquely above on the left; (e) from below.

[0048] FIG. 1 shows a perspective view of an embodiment of the quick-fastening system according to the invention with a side grid 5 with a first (front) vertical grid bar 5a and a second (rear) vertical grid bar 5b arranged parallel to and at a distance from it, as well as a plurality of retaining bars 3 fixed one above the other on the vertical grid bars. Each retaining bar 3 has a straight extending horizontal section 3a and, at opposite ends of the horizontal section 3a, respective end sections 3b and 3c angled perpendicularly thereto, which are fixed via their free ends, which are not angled to the horizontal section 3a, to a respective one of the vertical grid bars 5a, 5b in such a way that the horizontal section 3a of the retaining bar 3 extends perpendicularly to the vertical grid bars 5a, 5b and horizontally when the device is used as intended.

[0049] As intended, a telescopic extension 4 with a stationary rail element 4a and a movable rail element 4b, which is movable with respect thereto via ball bearings, is mounted on one of the retaining bars 3 by means of the quick-fastening system according to the invention. The stationary rail element 4a has a conventional C-shaped profile with a substantially straight back side, which connects the ball running surfaces of the rail element and provides a surface for mounting a quick-fastening element 1 and 2 according to the invention (see also FIGS. 4 and 5—shown there without ball bearings). The rear quick-fastening element 1 is fixed in the rear region of the rail element 4a or of the retaining bar 3, respectively, so that in the assembled state shown here it rests with the body-side first securing section 1c against the rear angled end section 3b of the retaining bar 3 and the lift-out securing section 1e partially extends under the angled end section 3b. The front quick-fastening element 2 is fixed in the front region of the rail element 4a or of the retaining bar 3, respectively, so that in the assembled state shown here it reaches with the body-side first securing section 2c in the pull-out direction of the telescopic extension 4 almost as far as the front angled end section 3c of the retaining bar 3.

[0050] The quick-fastening elements 1 and 2 of this embodiment are each made in one piece from approximately 1 mm thick sheet steel by punching out the structures, stamping and bending. As can also be seen in the further detailed views of FIGS. 2 to 4 and 7, for manufacturing reasons, the support section 1b or 2b and the second securing section 1d or 2d adjoining it are offset in the direction of the longitudinal extent of the horizontal section 3a of the retaining bar 3 in relation to the first securing section 1c or 2c without overlapping.

[0051] FIG. 2 shows a broken-away detailed view of the embodiment according to FIG. 1 in the region of the front quick-fastening element 2. The front quick-fastening element 2 is fixed to the stationary rail element 4a of the telescopic extension 4 via the fastening plate 2a. The retaining bar 3 of this embodiment has a substantially rectangular cross-section with rounded corners throughout and, at about half the height on both the body side and the rail side, a recess 3d extending over the entire retaining bar. The support section 2b extends from the mounting plate 2a over the horizontal section 3a of the retaining bar 3 and is supported on the latter from above. The second securing section 2d adjoins the support section 2b at an angle, extends vertically downward on the body side of the horizontal section 3a of the retaining bar 3, and rests on the body side of the horizontal section 3a of the retaining bar 3. In this preferred embodiment, the support section 2b and the second securing section 2d extend from the mounting plate 2a in two parts with respect to the longitudinal direction of the retaining bar, and when viewed from the front, the first securing section 2c extends vertically downward therebetween from the mounting plate 2a on the rail side of the horizontal section 3a of the retaining bar 3 and abuts the horizontal section 3a of the retaining bar 3 on the rail side.

[0052] Adjacent to the first securing section 2d, angled in the direction of the body side, is an lift-out securing section 2e, which extends with a section horizontally further in the insertion direction of the telescopic extension 4 than the first securing section 2d. However, in the case of the front quick-fastening element 2, the lift-out securing section 2e has no function, whereas in the case of the identically constructed rear quick-fastening element 1 it provides anti-lift protection in the rear region of the telescopic extension.

[0053] FIG. 3 shows a broken-away detailed view of the embodiment according to FIG. 1 in the region of the rear quick-fastening element 1, which is formed in the same way as the front quick-fastening element 2. FIG. 3 shows how the lift-out securing section 1e of the rear quick-fastening element 1 comes to lie under the rear angled end section 3b of the retaining bar 3 in the assembled state and effects an anti-lift protection in the rear area of the telescopic extension.

[0054] FIG. 4 shows a view of a cross-section through the front quick-fastening element 2 and in the mounted state on the horizontal section 3a of the retaining bar 3. The first securing section 2c, which extends vertically downwards on the rail side of the horizontal section 3a of the retaining bar 3, has an embossing or bend 2f, which is complementary to the recess 3d or at least matches it, for positive engagement of the first securing section 2c with the horizontal section 3a in the mounted state.

[0055] FIG. 5 shows a view of a cross-section through the rear quick-fastening element 1, looking from front to rear.

[0056] FIG. 6 shows a view of a cross-section through an alternative embodiment of a front quick-fastening element 2 with an lift-out securing hook 2g, which is formed in a rigid connection with the body-side first securing section 2c of the front quick-fastening element 2 and can be resiliently swung out in the direction of the body side relative to the fastening plate 2a (not shown here). In the mounted state, the lift-out securing hook 2g extends in sections under the horizontal section 3a of the retaining bar 3 in the direction of the rail side.

[0057] FIG. 7 shows views of the front quick-fastening element of the embodiment according to FIGS. 1 to 5 alone from different viewing directions. In this case, it is identical in construction to the rear quick-fastening element, although embossing 2f can be omitted from the rear quick-fastening element.

[0058] For the purposes of the original disclosure, it is pointed out that all features as they become apparent to a person skilled in the art from the present description, the drawings and the claims, even if they have been specifically described only in connection with certain further features, can be combined both individually and in any desired combinations with other of the features or groups of features disclosed herein, unless this has been expressly excluded or technical circumstances make such combinations impossible or pointless. A comprehensive, explicit presentation of all conceivable combinations of features is omitted here only for the sake of brevity and readability of the description.

[0059] While the invention has been illustrated and described in detail in the drawings and the foregoing description, this description of embodiments is by way of example only and is not intended to limit the scope of protection as defined by the claims. The invention is not limited to the embodiments shown.

[0060] Variations of the disclosed embodiments will be obvious to those skilled in the art from the drawings, description, and appended claims. In the claims, the word “comprising” does not exclude other elements or steps, and the indefinite article “a” does not exclude a plurality. The mere fact that certain features are claimed in different claims does not preclude their combination. Reference signs in the claims are not intended to limit the scope of protection.

REFERENCE LIST

[0061] 1 rear quick-fastening element [0062] 1a fixing plate [0063] 1b support section [0064] 1c first (rail side) securing section [0065] 1d second (body side) securing section [0066] 1e lift-out securing section [0067] 2 front quick fastening element [0068] 2a fixing plate [0069] 2b support section [0070] 2c first (rail side) securing section [0071] 2d second (body side) securing section [0072] 2e lift-out securing section [0073] 2f embossing, bending or profiling [0074] 2g lift-out securing hook [0075] 3 retaining bar [0076] 3a horizontal section of the retaining bar [0077] 3b (rear) angled end section of the retaining bar [0078] 3c (front) angled end section of the retaining bar [0079] 3d recess, embossing [0080] 4 telescopic extension [0081] 4a stationary rail element [0082] 4b movable rail element [0083] 5 side grid [0084] 5a first vertical grid bar [0085] 5b second vertical grid bar