GUIDE RAIL, GUIDE SYSTEM AND FURNITURE ITEM

Abstract

A guide rail including a rail body and a fastening element having a narrow front edge portion abutting the rail body, and configured as a bracket element from an angled sheet metal material with limbs oriented at an angle and connected along a bending edge, and a horizontal limb forming the flat material portion with the upper side and with the underside of the flat material portion with the edge portion. A horizontal limb of the bracket element has an inner limb portion adjoining the bending edge and an outer limb portion adjoining the inner limb portion via a longitudinally extending shoulder. The outer limb portion includes the edge portion and a reinforcing mechanism is provided on the fastening element as an arch extending along the shoulder over a partial region of the outer limb portion and over the shoulder and over part of the inner limb portion.

Claims

1. A guide rail of a guide system for a push-in element, the guide rail comprising a rail body and a fastening element, the fastening element being configured to fasten the guide rail on a mating portion in the state of use of the guide system, the fastening element being mounted on the rail body and being connected thereto, and the fastening element having a flat material portion with opposite main sides and with a narrow front edge portion between the main sides, in the state with the fastening element connected to the rail body, the edge portion of the fastening element abutting a surface side on the rail body, which surface side is oriented upright in the state of use of the rail guide, the fastening element being configured as a bracket element from an angled sheet metal material with limbs oriented at an angle and being connected to each other along a bending edge, and, in the state of use, a horizontally configured horizontal limb forming the flat material portion with the edge portion, wherein the horizontal limb has an inner limb portion adjoining the bending edge and an outer limb portion, wherein the outer limb portion adjoins the inner limb portion via a shoulder which extends in the longitudinal direction of the rail body, and wherein the outer limb portion has the edge portion, wherein a reinforcing mechanism is provided on the fastening element and comprises an arch which extends along the shoulder over a partial region of the outer limb portion.

2. The guide rail as claimed in claim 1, wherein the reinforcing mechanism on the outer limb portion extends over the length of the front edge portion, as viewed in the longitudinal direction of the guide rail.

3. The guide rail as claimed in claim 1, wherein the reinforcing mechanism is formed in a central portion of the horizontal limb with respect to the longitudinal direction of the guide rail.

4. The guide rail as claimed in claim 1, wherein the arch is configured continuously as an uninterrupted arch which is present at the outer limb portion and in the region of the shoulder.

5. The guide rail as claimed in claim 1, wherein the arch is formed in the region of the bending edge between the horizontal limb and the vertical limb.

6. The guide rail as claimed in claim 1, wherein the shoulder between the inner limb portion and the outer limb portion runs continuously over the entire length of the horizontal limb.

7. The guide rail as claimed in claim 1, wherein the outer limb portion is offset in the vertical direction with respect to the inner limb portion with respect to the state of use.

8. The guide rail as claimed in claim 1, wherein the edge portion over its entire length with respect to the longitudinal direction of the guide rail abuts the upright surface side on the rail body.

9. The guide rail as claimed in claim 1, wherein the fastening element is connected to the surface side on the rail body exclusively via the abutting connection.

10. The guide rail as claimed in claim 1, wherein on the rail body of the guide rail there is only one fastening element, the edge portion of which abuts the surface side of the rail body.

11. The guide rail as claimed in claim 1, wherein on the rail body of the guide rail there are two identically configured fastening elements with an edge portion, the respective edge portion of which abuts the surface side of the rail body.

12. The guide rail as claimed in claim 1, wherein on the rail body of the guide rail there is only one fastening element which abuts the surface side of the rail body, wherein there is a further fastening element which differs from the first fastening element in the configuration and/or in the manner of the connection to the rail body.

13. The guide rail as claimed in claim 1, wherein an attachment piece with an edge portion is provided, wherein the edge portion of the attachment piece abuts the surface side on the rail body, wherein a fastening element is attachable to the attachment piece.

14. A guide system for a push-in element, with a cabinet rail, wherein the cabinet rail is configured as a guide rail as claimed in claim 1.

15. The guide system as claimed in claim 14, wherein there is a push-in element rail on which the push-in element can be arranged in the state of use of the guide system, wherein the push-in element rail has a positioning portion which is configured protruding to an outer side of the push-in element rail and which is configured to predetermine a functionally correct relative position between the push-in element and the push-in element rail, in the state of use of the guide system.

16. A furniture item comprising a cabinet and a push-in element, the push-in element being received movably on the cabinet by way of a guide system, wherein a guide system is present for the push-in element as claimed in claim 14.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Further features and advantages of the present invention are explained in more detail with reference to the exemplary embodiments of the present invention that are illustrated in the figures. Corresponding elements of different exemplary embodiments are sometimes provided with the same reference signs.

[0058] FIG. 1 shows a schematically depicted furniture item according to the present invention in a perspective view obliquely from above, with a drawer received displaceably thereon in an extended position;

[0059] FIG. 2 shows a bottom right detail of the furniture item according to FIG. 1 from the rear or in a rear view;

[0060] FIG. 3 shows the guide system according to the present invention from FIG. 2 partially in an exploded illustration;

[0061] FIG. 4A shows the individual elements of a cabinet rail, shown in FIG. 3, in an exploded illustration;

[0062] FIG. 4B shows two elements, which are shown in FIG. 4A, on an enlarged scale;

[0063] FIG. 4C shows the individual elements of an alternative cabinet rail in an exploded illustration;

[0064] FIG. 4D shows two elements, which are shown in FIG. 4C, on an enlarged scale;

[0065] FIG. 4E shows a further alternative cabinet rail in an exploded illustration;

[0066] FIG. 4F shows two elements, which are shown in FIG. 4E, on an enlarged scale;

[0067] FIG. 5A shows the cabinet rail, which is shown in FIG. 4A, in assembled form in an end view from the front;

[0068] FIG. 5B shows the cabinet rail according to FIG. 5A in a section in the region of a front fastening element;

[0069] FIG. 5C shows the cabinet rail according to FIG. 5A in a section in the region of a rear fastening element;

[0070] FIG. 6A shows a perspective view of the assembled guide rail according to the elements from FIG. 4A obliquely from above;

[0071] FIG. 6B shows a perspective view of a front end portion of the guide rail according to FIG. 6A from the front;

[0072] FIG. 7 shows a perspective view of a rail body of the cabinet rail shown in FIGS. 3, 4A and 6A obliquely from above;

[0073] FIG. 8 shows the rail body according to FIG. 7 in an end view from the front;

[0074] FIG. 9 shows an arrangement based on the guide system according to FIG. 3 from the front in the assembled state without fastening elements;

[0075] FIG. 10 shows a perspective view of an alternative guide system obliquely from above;

[0076] FIG. 11 shows an enlarged detail from FIG. 10;

[0077] FIG. 12 shows a detail of a rear portion of an alternative guide system in an exploded illustration;

[0078] FIG. 13A shows an alternative guide rail in an exploded view; and

[0079] FIG. 13B shows a further alternative guide view in an exploded illustration.

DETAILED DESCRIPTION OF THE INVENTION

[0080] FIG. 1 shows a highly schematic depiction of a furniture item 1 according to the present invention in a state of use, with a hollow cuboid furniture cabinet 2 and a push-in element configured as a drawer 3, wherein the drawer 3 is received displaceably on the furniture cabinet 2, with two identical structural units of a guide system according to the present invention. FIG. 3 shows a structural unit in an exploded illustration. The furniture cabinet 2 comprises two opposite vertical sidewalls 4 and 5 between which the drawer 3, starting from a state of accommodation in the interior of the furniture cabinet 2, can be pulled out from the furniture cabinet 2 in the horizontal direction according to P1 and then pushed in in an opposite direction according to P2 via a guide system according to the present invention with telescopic guide means or with a first rail full-extension mechanism 6 and a second rail full-extension mechanism 7. The drawer 3 is shown in FIG. 1 in the state when moved out to the maximum extent or completely from the interior of the furniture cabinet 2. The storage volume of the drawer 3 can thus be accessed virtually unimpeded from above.

[0081] The rail full-extension mechanism 6 screwed onto the inner face of the sidewall 4 is located opposite, and at the same vertical height as, the rail full-extension mechanism 7 which is screwed onto the sidewall 5, is concealed in FIG. 1 and is indicated by broken lines.

[0082] A further drawer (not illustrated in FIG. 1), guided correspondingly by way of rail full-extension mechanisms 8 and 9, can be accommodated in the furniture cabinet 2 above the drawer 3. The drawer 3 has mutually opposite drawer sidewalls 10, 11. In addition, the drawer 3 comprises a front element 12, a rear wall 13 lying horizontally opposite the latter, and a horizontally extending drawer bas 14, which reaches as far as and is connected to the drawer sidewalls 10, 11, the front element 12 and the rear wall 13.

[0083] FIG. 2 shows the situation according to FIG. 1 in a section through the furniture cabinet 2, transversely with respect to the length of the rail full-extension mechanism 6 in the region of the right cabinet sidewall 4, as viewed from the rear. The region shows a cabinet base 15, a detail of the drawer 3 with the drawer base 14, the drawer sidewall 10 and the rear wall 13. The drawer 3 is received on the furniture cabinet 2 via two structural units of a guide system according to the present invention, of which the rail full-extension mechanism 6 according to the present invention is fastened to the sidewall 4. On the other or left side, the drawer 3 is received in the same way on the sidewall 5 (not visible in FIG. 2) by way of the further drawer sidewall 11 via the further rail full-extension mechanism 7.

[0084] The rail full-extension mechanism 6 and 7 according to the present invention formed as a structural unit of the guide system are configured as undermount guide, which FIG. 2 shows, by which the undermount guide or the rail full-extension mechanism 6 is positioned below the drawer base 14. The rail full-extension mechanism 6 or 7 comprises three guide rails, or a cabinet rail 16, a central rail 17 and a push-in element 18, which are telescopic with respect to one another.

[0085] The central rail 17 is configured, for example, as a hollow profile closed circumferentially on the longitudinal side.

[0086] A push-in element which is to be moved, such as the drawer 3, is coupled or connected to the push-in element rail 18 by the drawer base 14 or the underside thereof being supported on top of an upper side 18a of the push-in element rail 18.

[0087] The cabinet rail 16 is spaced apart at the bottom slightly from the cabinet base 15 and is connected to the sidewall 4 according to FIG. 2 by being screwed fixedly thereto.

[0088] As, for example, FIGS. 2 and 3 show, a hook element 19 which is present at the rear end of the push-in element rail 18 and protrudes upward forms a stop for a portion of the rear wall 13 of the drawer 3, wherein, for the precise positioning, a portion of the hook element 19 that is angled parallel to the upper side 18a engages in a prepared depression matching it in the rear wall 13 of the drawer 3. The hook element 19 protrudes at the top on the upper side 18a of the push-in element rail 18 which serves for supporting the underside of the base 14.

[0089] On the push-in element rail 18, there is a positioning portion 77 which is formed protruding with respect to a vertical outer face on the inner face of the push-in element rail 18 and has a ramp portion 77a and a contact portion 77b. The positioning portion 77 serves for easily pushing on the drawer during the initial installation. In addition, the positioning portion 77 predetermines a functionally correct relative position between the drawer 3 and the push-in element rail 18, in the state of use of the rail full-extension mechanism 6. This can advantageously permit the fine adjustment of the drawer 3 or positionally correct mounting of the drawer 3 on the rail full-extension mechanism 6, for example, in the lateral direction or in a direction transversely with respect to the length of the push-in element rail 18, with the latter being mounted on the cabinet 2 of the furniture item 1 during the installation. The rear wall 13 has, for example, a cutout 78 with a vertical mating portion 79. When the drawer 3, which is virtually correctly oriented laterally with respect to the push-in element rail 13, is pushed on with the rear wall 13 in front in the direction S3, the positioning portion 77 comes into action. The underside of the drawer base 14 is supported here on the upper side 18a. Toward the end of the pushing-on movement, when the drawer 3 is located laterally somewhat too close to the sidewall 4 of the furniture cabinet 2, a rear vertical edge on the mating portion 79 first of all comes into contact with the ramp portion 77a and, upon further pushing on of the drawer 3 in the direction S3, is offset laterally until into the correct side position relative to the push-in element rail 13. In the final installation position of the drawer 3, the contact portion 77b is then present at the mating portion 79, which FIG. 2 clarifies.

[0090] In addition, the full-extension mechanism 6 comprises a first or lower carriage 20 with bearing bodies arranged thereon, wherein the carriage 20 between the cabinet rail 16 and the central rail 17 ensures a load-transmitting relative movement of the rails 16, 17.

[0091] Furthermore, the full-extension mechanism 6 comprises a second or upper carriage 21 with bearing bodies arranged thereon, wherein the upper carriage 21 between the central rail 18 and the push-in element rail 18 ensures a load-transmitting relative movement of the rails 17, 18.

[0092] The length of the carriages 20 and 21 may be different, as compared with each other. However, it is also conceivable for the length of the carriage 20 to be identical to the length of the carriage 21 or for the two carriages 20 and 21 to have the same length.

[0093] A receptacle 23 is present on a vertical, inwardly facing narrow side of a rail body 22 of the cabinet rail 16, by way of which receptacle a movement mechanism 24 of the rail full-extension mechanism 6 can be attached, wherein the movement mechanism 24 is configured, for example, for supporting an ejection movement and/or a retraction movement of the drawer 3. The movement mechanism 24 is, for example, a universally configured component which is usable for different guide systems and can be arranged thereon in a respective orientation. In the present exemplary embodiment, the movement mechanism 24 is moved with a side, on which notches 80 for latching are provided, in front according to the plug-on direction S2 in the direction of the receptacle 23 and plugged thereon. In the process, the two notches 80 latch on latching wings 81 matched thereto. The movement mechanism 24, rotated by 90 angular degrees about its longitudinal axis, can alternatively be attached to another guide system, for example, by way of two pins protruding on the rail body associated therewith perpendicularly to a vertical inner face.

[0094] In addition, a depth adjustment element 25 is provided at the front of the cabinet rail 16.

[0095] Two approximately L-shaped fastening elements or a front fastening element 26 and a rear fastening element 27 belong to the cabinet rail 16. The fastening elements 26, 27 serve to fasten or fix the rail full-extension mechanism 6 on a mating portion, for example, on an inner face 4a of the sidewall 4 of the furniture cabinet 2 (see FIG. 2).

[0096] The guide rails 16-18 are preferably made of a sheet metal material which, starting from the flat sheet metal material, is shaped, for example, by a punching and bending process, in order to give the end product of the respective guide rail.

[0097] The hollow profile form of the central rail 17 that is closed circumferentially for example by laser welding makes it possible for the central rail 17 to be mechanically highly stable, in particular flexurally and torsionally rigid.

[0098] The fastening element 26 is connected to the rail body 22 by cohesive bonding, preferably is welded thereto, or is connected by a welding process, such as, for example, a laser welding process.

[0099] In the exemplary embodiment according to FIG. 13A, there are precisely two identical fastening elements 26 present on the rail body 59 of an associated guide rail 58 which forms a cabinet rail. The basic shape of the fastening elements 26 is an L shape.

[0100] The basic shape of the fastening element 27 is also an L shape with a vertical limb and a horizontal limb having a centrally extending longitudinal shoulder and is mounted, for example, releasably on an attachment piece 28, for example, can be attached by pushing on a rear front face of the attachment piece 28 (see FIG. 4B). In the process, an angled tab 29 of the fastening element 27, which tab engages on the horizontal limb in the region of the longitudinal shoulder and protrudes upward thereon, engages in a clamping manner over a flat portion 30 on the attachment piece 28. A further, downwardly protruding angled tab 31 of the fastening element 27 engages in a clamping manner below a flat portion 32 on the attachment piece 28. The two portions 30 and 32 are separated or spaced apart in the width direction flush at one height by a central incision, for example, a material recess, which is open to the rear end and is right-angled in top view.

[0101] The attachment piece 28 has an edge portion 28a, for example, over a partial length, wherein the edge portion 28a of the attachment piece 28 abuts the surface side 33 at the rear of the rail body 22, for example is laser welded thereto. The fastening element 27 is screwed, for example, to the furniture cabinet, for example, to an inner face of a sidewall, for which purpose there are a plurality of round mounting holes and, for example, an elongated hole in the vertical limb of the fastening element 27, and then the remaining guide rail is mounted attached from the front or attached to the attachment piece 28. A cabinet rail 16 according to FIG. 4C differs from the cabinet rail 16 according to FIG. 4A in that, instead of the fastening element 27, a mounting element 61 with a horizontal limb 62 and a vertical limb 63 is provided. The mounting element 61 is configured, for example, as an angled sheet formed, for example, from a metal material. A plurality of horizontally oriented elongated holes and a plurality of, for example, two vertically oriented parallel elongated holes and a plurality of round screwing-on holes for fastening to, for example, a rear wall of a furniture cabinet are formed in the vertical limb 63. For the attachment and firm clamping of the rearward end portion of the attachment piece 28, which is provided at the rear of the rail body 22, for example, by pushing on in direction S1, the horizontal limb 62 is provided with two opposite L-shaped clamping portions 64 and 65 which protrude upward on an upper side of the horizontal limb 62 and are spaced apart transversely with respect to the longitudinal direction of the rail body 22. In the connected state of attachment piece 28 and mounting element 61, a region of the portion 30 of the attachment piece 28 or regions adjoining the portions are held clamped between a horizontally running upper part of the clamping portion 64 and the upper side of the horizontal limb 62. In a corresponding manner, in the connected state of attachment piece 28 and mounting element 61, a region of the portion 32 of the attachment piece 28 or regions adjoining the portion are held clamped between a horizontally running upper part of the clamping portion 65 and the upper side of the horizontal limb 62. The cabinet rail 16 can, therefore, be fixed at the rear, for example, to a rear wall of the furniture cabinet, and held transversely with respect to the longitudinal axis of the cabinet rail 16 without lateral play or in a fixed transverse position. Accordingly, the cabinet rail which is fastened to the furniture cabinet runs, for example, horizontally and parallel to the cabinet sidewall. In the longitudinal direction of the cabinet rail 16, the position of the remaining rail body 22 with the attachment piece 28 is variable relative to the mounting element 61 over the length of the horizontal limb 62.

[0102] A cabinet rail 16 according to FIGS. 4E, 4F, as an alternative to the cabinet rail 16 according to FIGS. 4C, 4D, differs from the configuration according to FIGS. 4B, 4C by an alternative mounting element 66 to the mounting element 61. The mounting element 66 is composed, for example, of plastic and can be screwed to a rear wall of a furniture cabinet and/or can be inserted into a, for example, matching opening which is provided in the rear wall of a furniture cabinet via a plug-in projection 66a of the mounting element 66, the plug-in projection protruding rearward at the rear of an otherwise plane rear side of the mounting element 66, and can be fixed, for example, by clamping. The attachment piece 28 can be pushed on the mounting element 66 from the front. The attachment and firm clamping of the rearward end portion of the attachment piece 28, which is provided at the rear of the rail body 22, is undertaken, for example, by pushing on in direction S1. The attachment piece 28 can be attached by, for example, a fitter to the mounting element 66 at, for example, two different provided positions, for example, according to choice. The different positions differ in a vertical position with respect to a direction perpendicular to a flat upper side of a horizontal limb 67. In a first position in which the attachment piece 28 is pushed on and fastened to the horizontal limb 67, respective undersides of the portion 30 of the attachment piece 28 or regions adjoining the portion are supported on a first upper side 67a of the horizontal limb 67. In a different or second position which is located higher than the first position and in which the attachment piece 28 when pushed on can be fastened to the horizontal limb 67, respective undersides of the portions 30 and 32 of the attachment piece 28 or regions adjoining the portions are supported on a second upper side 67b of the horizontal limb 67. A height difference h1 between the two sides 67a and 67b oriented parallel is, for example, one, two, three or more millimeters, for example, in a direction perpendicular to the side 67a. The horizontal limb 67 is provided with elongate webs 68, 69 which are central with respect to the width transversely with respect to the longitudinal direction of the cabinet rail 16 and lie one above the other. On both sides of the lower web 68, two longitudinal slots which are open on the outside over their length and are bounded downward by the side 67a are formed along or laterally adjoining the web 68 by means of respective material strips which protrude above and laterally on both sides of the web 68 and belong to the side 67b.

[0103] Similarly, two longitudinal slots which are bounded at the bottom by the side 67b and adjoin along the web 69 or at the webs 69 are formed on both sides of the web 69 by respective lateral material strips protruding above and laterally horizontally at the web 69.

[0104] The identical width of the strip-shaped webs 68, 69 is coordinated with the width of the strip-shaped material recess at the rear end of the attachment piece 28 between the two portions 30 and 32 or is slightly smaller than the width of the strip-shaped material recess. The slot height of the longitudinal slots is identical, wherein the sheet-like or plate-like portions 30 and 32 can be pushed into the longitudinal slots from the front with slight rubbing. The cabinet rail 16 can therefore be fastened releasably in two different height positions to the mounting element 66 and, therefore, relative, for example, to the furniture cabinet rear wall.

[0105] An abutting connection of the fastening element 26 to a vertical or upright surface side 33 of the rail body 22 or to an outer surface side 60 of a rail body 59 by means of a welded connection takes place via a narrow front edge portion 34 on the fastening element 26 (see FIGS. 5B, 13A).

[0106] The two-limbed or L-shaped fastening element 26 has a flat material portion 35 with opposite main sides 35a and 35b and the edge portion 34 between the main sides 35a, 35b. In the state of use, the fastening element 26 comprises a vertical limb 36 and a horizontal limb 37 which extends in the horizontal direction and is formed from the flat material portion 35. The vertical limb 36 and the horizontal limb 37 are at right angles or at an angle of 90 angular degrees to each other.

[0107] In the upper portion of the vertical limb 36 of the fastening element 26 there are a plurality of, for example, three, circular mounting holes 38a positioned next to one another over the longitudinal extent of the fastening element 26, for example, screw holes, and two elongated holes 38b which adjoin the mounting holes at the front and rear, extend in the longitudinal direction and between which the mounting holes 38a are present. The mounting holes 38a and/or the elongated holes 38b serve to screw the rail full-extension mechanism 6 or the cabinet rail 16 to a mating portion, for example, to the vertical sidewall 4 of the furniture cabinet 2.

[0108] The rail body 22 comprises a base 39 and vertical sides 40 and 41, which are angled upwards at a right angle along both longitudinal sides of the base 39 in cross section, and longitudinal webs 42, 43 which are each oriented angled inward at the upper end of the associated side 40 and 41 (see FIG. 5B).

[0109] A contact surface 44 is provided by the plane edge portion 34 which is at the end of the horizontal limb 37 and is strip-shaped in top view, on the fastening element 26, the edge portion being formed at the edge of a free edge of an outer limb portion 45 of the horizontal limb 37 (see FIG. 13A). In the case of the fastening element 26, a fixed connection, for example, laser welded connection, is formed between the surface side 33 or 60 of the rail body 22 or 59 and the contact surface 44.

[0110] The fastening element 26 is, therefore, connected by the edge portion 34 to the rail body 22 or 59 and the surface side 33 or 60 thereof via a flat cohesively bonded connection.

[0111] The horizontal limb 37 also comprises an inner limb portion 46 between a bending edge 47 of the fastening element 26 and a shoulder 48 of the horizontal limb 37.

[0112] In order to reinforce the fastening element 26, reinforcing mechanisms with an arch 50 are formed on the fastening element 26. In addition, two mechanically stabilizing ribs 49 are formed in the region of the bending edge 47.

[0113] The arch 50 has a uniform height, for example, over its entire extent, and forms a plane upper side and a plane underside with a bent edge of the arch 50. The height of the arch 50 with respect to non-stamped, plane portions of the fastening element 26 is, for example, in the millimeter range, with respect to a distance of an upper side of the arch 50 to an upper side of the sheet metal material of the fastening element 26 that has not been deformed in an arched manner. The height of the arch 50 corresponds, for example, to half the sheet metal thickness of the sheet metal material of the fastening element 26 and is, for example, circa 1 or 2 millimeters for each sheet metal material of a thickness of 2 or 4 millimeters. The arch 50 is raised on an upper side of the fastening element 26 or formed as an elevation with respect to the state of use and with respect to adjacent adjoining portions of the fastening element 26. The arch 50 is recessed on an underside of the fastening element 26 or formed as a depression or trough with respect to the state of use and with respect to adjacent adjoining portions of the fastening element 26.

[0114] The arch 50 extends continuously from the outer limb portion 45 over the shoulder 48 to the inner limb portion 46, over the bending edge 47 as far as the vertical limb 36, and over the height thereof as far as the mounting holes 38. The arch 50 extends, for example, over all of the mounting holes 38.

[0115] The size or the length of the arch 50 in the longitudinal direction of the guide rail 16 or of the rail body 22 is reduced in the inner limb portion 46, in the vicinity of the shoulder 48, in relation to a greater length of the arch 50 in the region of the outer limb portion 45 and in the region of the shoulder 48. The reduction in the length is, for example, circa 50%. The length of the arch 50 in the outer limb portion 45 and over the shoulder 48 is, for example, identical.

[0116] In the region of the inner limb portion 46 and upward on the vertical limb 36 from the bending edge 47 as far as close to the mounting holes 38, the arch is strip-shaped and forms centrally over a partial length of, for example, 20% of the entire length of the fastening element.

[0117] In the region of the outer limb portion 45, the arch 50 extends over the substantial length of the outer limb portion 45, for example, over 80% and more, for example, over 90% of the length of the outer limb portion 45. The arch 50 is preferably formed continuously over its entire extent. The arch 50 is formed continuously from the outer limb portion 45 over the shoulder 48, the inner limb portion 46, the bending edge 47 and the vertical limb 36.

[0118] A structural unit 51 of an alternative guide system according to the present invention is shown in FIGS. 10 to 12.

[0119] FIG. 10 shows, in an overall view, a pushed together rail full-extension mechanism 52 with a cabinet rail 53, a push-in element rail 54 and a central rail which is present in between and is concealed in the figures.

[0120] The rail full-extension mechanism 52 with the cabinet rail 53 is suitable for a furniture cabinet which does not have a sidewall, and, therefore, a lateral mounting of a rear fastening element in the rearward region of the furniture cabinet via, for example, mounting holes in a mounting portion of the rear fastening element is not possible. When the cabinet sidewall is absent, the front fastening element 26 can be screwed via the vertical limb 36 for example to a front frame element of the furniture cabinet or a “face frame” element which extends rearward in the direction of a depth of the furniture cabinet, for example, over 50 millimeters, and regularly extending in a strip-shaped manner over the entire cabinet height.

[0121] The cabinet rail 53 has a fastening element 26 as described above in a front end portion.

[0122] An adapter element 56 which is separate from the cabinet rail 53 can be inserted via a plug-in portion 57 protruding to the rear on the rear side thereof into a matching bore in a rear wall of a furniture cabinet (not shown). According to FIGS. 10 and 11, a, for example, approximately U-shaped rear end of a rail body 53a of the cabinet rail 53 can be inserted into matching mating portions on the adapter element 56 in direction S1 such that a rear end of the rail full-extension mechanism 52 can be mounted in a fixedly supported manner on the furniture cabinet.

[0123] FIG. 12 shows a modification of FIGS. 10 and 11. At the rear end of the cabinet rail 53, there is optionally an intermediate piece 55 which is connected to a rear end of the rail body 53a of the cabinet rail 53 in the state of use. The intermediate piece 55 can be used, for example, if the rail body 53a has too short a length, to extend the latter by choice or optionally. A rearward, for example, approximately U-shaped end of the intermediate piece 55 can be plugged into matching mating portions on the adapter element 56 such that a rear end of the rail full-extension mechanism 52 can be mounted in a fixedly supported manner on the furniture cabinet. The rail body 53a is connected to the metallic intermediate piece 55, for example, releasably, or fixedly, for example, welded thereto.

[0124] The intermediate piece 55 is preferably placed on or attached to the rail body 53a. The intermediate piece 55 can be selected, for example, from a set of intermediate pieces which are identically shaped but differ in length or from a plurality of available intermediate pieces which are identical in shape but differ in length, for example, in the form of a plug-on adapter. The plug-on adapters, for example, from the set have different lengths. Precisely one plug-on adapter with a matching or desired length can thus be selected.

[0125] The adapter element 56 is preferably composed of a plastics material and has a groove for a side adjustment of the intermediate piece 55 or of the rail or of the rail body 53a.

[0126] FIG. 13A shows a guide rail 58 or cabinet rail as an alternative to the guide rail 16, in an exploded illustration. In the assembled state of the guide rail 58, precisely two identical fastening elements 26 abut the rail body 59 of the guide rail 58. The fastening elements 26 are configured identically to the front fastening element 26 according to the guide rail 16 and abut the surface side 60 on the rail body 59. The front and the rear fastening element 26 are, for example, each mounted flush on the surface side 60 of the rail body 59. For example, a front edge of the front fastening element 26 is flush, or offset only in the millimeter range, with the front edge of the surface side 60 of the rail body 59. For example, a rear edge of the rear fastening element 26 is flush, or offset only in the millimeter range, with the rear edge of the surface side 60 of the rail body 59.

[0127] Opposite parallel, elongate narrow and, for example, channel-shaped recesses 59a on the front longitudinal end portion of the rail body 59 are present on the inner face and are upwardly open in the base 39 of the rail body 59, for example, by means of a material recess. The recesses 59a reach as far as the front side of the rail body 59 and form a wall thickness weakening of the rail body 59 over a comparatively short longitudinal portion of the base 39.

[0128] The recesses 59a of the rail body 59 serve to avoid comparatively small, but interfering scraping off of material by frictional contact with downwardly directed, bent-over edges of the central rail 17 and to avoid scraping noises with the edges of the central rail 17, which may otherwise be the case, for example, due to lowering the central rail, in particular, when the rail extension mechanism is pushed out.

[0129] FIG. 13B shows a modification of the present invention, with which the guide rail 58 can be fastened to a rear wall of the furniture cabinet (not illustrated) by means of a receiving element 74 when the sidewall of the furniture cabinet is absent. For this purpose, a plate-like adapter element 70 which can be screwed to the rear wall of the furniture cabinet is provided with a plug-in contour 71 having opposite parallel grooves. A matching plate-like plug-in tongue 72 of the receiving element 74 is pushed in on the plug-in contour 71 and fastened in a clamping manner. The plug-in tongue 72 is at right angle to a limb portion 73 of the receiving element 74. In the mounted state, the limb portion 73 extends forward in the longitudinal direction of the guide rail 58 or of the rail body 59.

[0130] The limb portion 73 is provided with an elongated hole 75 running in the longitudinal direction of the rail body 59 and with a plurality of round screwing-on holes 79 present below the elongated hole. In order to fasten the fastening element 26 to the receiving element 74 or to the limb portion 73 thereof, use is made of, for example, screwing mechanisms which reach through the mounting holes 38a and/or through the elongated holes 38b and through the elongated hole 75 and the screwing-on holes 76. An adjustment of the position of the guide rail 58 on the receiving element 74 in the longitudinal direction of the guide rail 58 is possible here along the longitudinal extent of the elongated hole 75.

TABLE-US-00001 List of reference signs 1 Furniture item 2 Furniture cabinet 3 Drawer 4 Sidewall 4a Inner face 5 Sidewall 6 Rail full-extension mechanism 7 Rail full-extension mechanism 8 Rail full-extension mechanism 9 Rail full-extension mechanism 10 Drawer sidewall 11 Drawer sidewall 12 Front element 13 Rear wall 14 Drawer base 15 Cabinet base 16 Cabinet rail 17 Central rail 18 Push-in element rail 18a Upper side 19 Hook element 20 Carriage 21 Carriage 22 Rail body 23 Receptacle 24 Movement mechanism 25 Depth adjustment element 26 Fastening element 27 Fastening element 28 Attachment piece 28a Edge portion 29 Tab 30 Portion 31 Tab 32 Portion 33 Surface side 34 Edge portion 35 Flat material portion 35a Main side 35b Main side 36 Vertical limb 37 Horizontal limb 38a Mounting hole 38b Elongated hole 39 Base 40 Side 41 Side 42 Longitudinal web 43 Longitudinal web 44 Contact surface 45 Limb portion 46 Limb portion 47 Bending edge 48 Shoulder 49 Rib 50 Arch 51 Structural unit 52 Rail full-extension mechanism 53 Cabinet rail 53a Rail body 54 Push-in element rail 55 Intermediate piece 56 Adapter element 57 Plug-in portion 58 Guide rail 59 Rail body 59a Recess 60 Surface side 61 Mounting element 62 Horizontal limb 63 Vertical limb 64 Clamping portion 65 Clamping portion 66 Mounting element 66a Plug-in projection 67 Horizontal limb 67a Side 67b Side 68 Web 69 Web 70 Adapter element 71 Plug-in contour 72 Plug-in tongue 73 Limb portion 74 Receiving element 75 Elongated hole 76 Screwing-on hole 77 Positioning portion 77a Ramp portion 77b Contact portion 78 Cutout 79 Mating portion 80 Notch 81 Latching means