Guide rail of a guide system, guide system, and furniture item

Abstract

A guide rail of a guide system for a push-in element is proposed, wherein the guide rail comprises a rail body and a fastening element, wherein the fastening element is configured in such a way as to fasten the guide rail on a mating portion in the state of use of the guide system, wherein the fastening element is mounted on the rail body and cohesively bonded thereto, and wherein the fastening element has a flat material portion with opposite main sides and with a narrow front edge portion between the main sides. According to the invention, in the state with the fastening element connected to the rail body, the edge portion of the fastening element abuts a surface side on the rail body, which surface side is oriented upright in the state of use of the guide rail.

Claims

1. A guide rail of a guide system for a push-in element, the guide rail comprising: a rail body having a horizontal base portion and at least one vertical side wall portion defining a vertical direction orthogonal to the base portion, and a fastening element mounted on the rail body, the fastening element including a substantially flat horizontal portion with at least one lateral region defining at least first and second front edge portions, the at least the second front edge portion being spaced away in the vertical direction from the at least the first front edge portion, wherein the at least the first and second front edge portions of the fastening element abut and are connected to the at least one vertical side wall portion on the rail body.

2. The guide rail according to claim 1, wherein connection of the fastening element to the rail body is provided exclusively by a cohesive bond defined between the abutting at least the first and second front edge portions of the fastening element and the side wall portion of the rail body.

3. The guide rail according to claim 1, wherein the fastening element is configured in a basic form as a bracket element with two limbs oriented orthogonal to each other.

4. The guide rail according to claim 1, wherein an edge portion of the fastening element, which comprises the at least the first and second front edge portions, and which abuts the side wall portion of the rail body, is strip-shaped.

5. The guide rail according to claim 1, wherein a shape of the at least the first and second front edge portions is predefined by a shape of the flat horizontal portion of the fastening element adjoining the edge portions.

6. The guide rail according to claim 1, wherein the flat horizontal portion adjoining the at least first and second front edge portions each comprise a region that is one of depressed or elevated in relation to adjacent regions of the flat horizontal portion.

7. The guide rail according to claim 1, wherein the flat horizontal portion adjoining the at least the first and second front edge portions in each case has the at least one lateral region, wherein the at least one lateral region includes two spaced apart lateral first regions provided on a common plane, and a raised lateral second region of elevated configuration defined between the two lateral first regions.

8. The guide rail according to claim 1, wherein an edge profile has mutually offset straight portions, which are connected to each other by a raised region present between the straight portions.

9. The guide rail according to claim 1, wherein the rail body is configured as a hollow profile enclosed by wall portions of the rail body.

10. The guide rail according to claim 1, wherein at least two fastening elements are mounted on the rail body.

11. The guide rail according to claim 1, wherein the guide rail is formed from a shaped sheet material.

12. A guide system for a push-in element, comprising: a structural unit including a guide rail according to claim 1, and a push-in element rail received displaceably on the guide rail, and configured for connection to the push-in element, wherein a bearing arrangement is present between portions of the guide rail and portions of the push-in element rail for the purpose of a relative movement of the guide rail and the push-in element rail.

13. The guide system according to claim 12, wherein the guide system is configured as an undermount guide system, wherein the push-in element rail is configured such that an underside of a base of the push-in element can be supported on the push-in element rail in the state of use of the guide system.

14. The guide system according to claim 12, wherein the guide system is configured as a hollow-chamber drawer side guide system, wherein the guide system is configured in such a way that the guide system can be accommodated at least substantially within an internal volume of a hollow-chamber drawer side.

15. A furniture item or domestic appliance, comprising a guide system according to claim 12.

16. A guide system for a push-in element comprising: a guide rail according to claim 1, a push-in element rail configured for connection to the push-in element, and a central rail present between the guide rail and the push-in element rail, wherein, a first bearing arrangement is present between portions of the guide rail and of the central rail and a second bearing arrangement is present between portions of the central rail and of the push-in element rail.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further features and advantages of the present invention are explained in more detail on the basis of the illustrative embodiments of the invention shown in the figures, in which:

(2) 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;

(3) FIG. 2 shows in cross section a perspective detail of a furniture item according to the present invention, in the region of a drawer side adjacent to a furniture cabinet wall and a furniture cabinet base;

(4) FIG. 3 shows the detail according to FIG. 2 in a front view;

(5) FIG. 4 shows an exploded view of a structural unit of a guide system according to the present invention;

(6) FIG. 5 shows a front view of one of the guide rails shown in FIG. 4;

(7) FIG. 6 shows the guide rail according to FIG. 5 in a perspective view obliquely from above;

(8) FIG. 7 shows a perspective view of an end portion of the guide rail according to FIGS. 5 and 6;

(9) FIG. 8 shows the guide rail from FIGS. 5 to 7 in the view according to FIG. 4, in the state before connection of the elements of the guide rail; and

(10) FIG. 9 shows the rail body according to FIG. 8 in a side view.

DETAILED DESCRIPTION OF THE INVENTION

(11) For corresponding elements of different illustrative embodiments, the same reference signs are used below in part.

(12) 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 3 configured as a drawer, wherein the drawer 3 is received displaceably on the furniture cabinet 2. The furniture cabinet 2 comprises two opposite vertical side walls 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 in a 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 a first full-extension rail 6 and a second full-extension rail 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.

(13) If the drawer 3 uses, instead of the full-extension rails 6, 7, in each case a partial-extension rail, the drawer 3, in the state of maximum extraction, cannot be moved so far out of the interior of the furniture cabinet 2 in direction P1 as is possible with the full-extension rails 6, 7 according to the depiction in FIG. 1. The front element 12 is then nearer to the open front face of the furniture cabinet 2 than is shown for the drawer 3 according to FIG. 1.

(14) The full-extension rail 6 screwed onto the inner face of the side wall 4 is located opposite, and at the same height as, the full-extension rail 7 screwed onto the side wall 5. The full-extension rail 7 is concealed in FIG. 1 and is indicated by broken lines.

(15) A further drawer (not shown in FIG. 1), guided correspondingly by way of full-extension rails 8 and 9, can be accommodated in the furniture cabinet 2 above the drawer 3.

(16) The drawer 3 has mutually opposite drawer side walls 10, 11, each of which comprises a structured hollow-chamber drawer side. Moreover, the drawer 3 comprises a front element 12, a rear wall 13 lying horizontally opposite the latter, and a horizontally extending drawer base 14, which reaches as far as and is connected to the drawer side walls 10, 11, the front element 12 and the rear wall 13.

(17) FIGS. 2 and 3 show, in the region of a cabinet side wall 5, a detail of a drawer 3 with a drawer base 14, a drawer side wall 11 designed as a hollow-chamber drawer side 15, and a 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, i.e. on the side wall 5 via a full-extension rail 16 according to the present invention and in the same way on the side wall 4 (not visible in FIG. 2) via a further hollow-chamber drawer side of the drawer 3. It is received on the side wall 4 via a further structural unit or a further full-extension mechanism according to the present invention, as a result of which the drawer 3 is linearly displaceable horizontally in the directions P1 and P2.

(18) The hollow-chamber drawer side 15, preferably made of bent sheet-metal material, has an outer housing 15a and an inner structure 15b, such that the full-extension mechanism 16 can be accommodated in a recessed manner in the internal volume of the hollow-chamber side wall 15. On an inner face of the hollow-chamber side wall 15 in the lower portion of the latter, it is designed to receive a longitudinal edge of the drawer base 14.

(19) The full-extension mechanism 16 according to the present invention, formed as a structural unit of the guide system, comprises three mutually telescopic guide rails, namely a cabinet rail 17, a central rail 18 and a push-in element rail 19.

(20) The central rail 18 is configured as a hollow profile according to the present invention.

(21) A push-in element to be moved, for example, the drawer 3, is coupled or connected to the push-in element rail 19, for example, fixed to the hollow-chamber drawer side 15, whereas the cabinet rail is connected to the stationary part of the item of furniture. If the full-extension mechanism 16 is used as an undermount slide, an underside of a push-in element, or the base thereof, bears on an upper face 19a of the push-in element rail 19. An upwardly protruding hook element 19b at the rear end of the push-in element rail 19 forms a stop for a portion of a rear outer face of the push-in element, wherein, in order to achieve precise positioning, a portion of the hook element 19b angled parallel to the upper face 19a engages in a suitably prepared depression in the rear outer face of the push-in element. Thus, in FIG. 4, the rear region of the full-extension mechanism 16 is also fixed in the state of use (on the left-hand side in FIG. 4), and a front region of the full-extension mechanism 16 is fixed in the state of use (on the right-hand side in FIG. 4). A forward and rearward horizontal linear slide direction 30 of the rails 18 and 19, in the state of use of the full-extension mechanism 16, is indicated by a double arrow in FIG. 4.

(22) Moreover, the full-extension mechanism 16 comprises a first or lower carriage 20 with bearing bodies arranged thereon, wherein the carriage 20 between the cabinet rail 17 and the central rail 18 ensures a load-transmitting relative movement of the rails 17, 18.

(23) Moreover, the full-extension mechanism 16 comprises a second or upper carriage 21 with bearing bodies arranged thereon, wherein the carriage 21 between the central rail 18 and the push-in element rail 19 ensures a load-transmitting relative movement of the rails 18, 19.

(24) Pins 32 are present on a vertical, inwardly facing narrow side of a rail body 31 of the cabinet rail 17, by way of which pins 32 a movement mechanism 22 of the full-extension mechanism 16 can be attached, for example, for ejection and/or retraction of the drawer 3.

(25) Two L-shaped fastening elements 33 and 34 belong to the cabinet rail 17, wherein the fastening elements 33 and 34 serve to fasten or fix the full-extension mechanism 16 on an inner face of the side wall of a cabinet, for example, the inner face 5a of the side wall 5 of the furniture cabinet 2 of the furniture item 1.

(26) In the illustrative embodiment according to FIG. 3, the fastening elements 33 and 34 have a horizontal limb greatly shortened in width with the width BO.

(27) A distance between the outer face of the hollow-chamber drawer side 15 and an inner face 5a of the side wall 5 can thus be minimized, which maximizes a receiving volume of the drawer 3.

(28) The guide rails 17, 18, 19 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.

(29) In order to limit a movement of the lower carriage 20 and of the upper carriage 21 relative to the central rail 18 in the longitudinal extent of the central rail 18 along a central longitudinal axis L (see FIG. 4), upper stops 35 and lower stops 36 are present on the central rail 18.

(30) With the full-extension mechanism 16 assembled, the bearing bodies received on the carriages 20, 21 run along the outwardly directed sides of the central rail 18 or the horizontal wall portions 23, 24 and the side wall portions 25-28. By way of its portions 20a and 20b carrying the bearing bodies, the lower carriage 20 engages externally around the horizontal wall portion 24 and the side wall portions 27, 28.

(31) By way of its portions 21a and 21b carrying the bearing bodies, the upper carriage 21 engages externally around the horizontal wall portion 23 and the side wall portions 25, 26.

(32) Accordingly, the respective associated bearing bodies of the lower carriage 20 roll on the distal face of the lower horizontal wall portion 24, on the outer face of the side wall portion 27, and on the outer face of the side wall portion 28.

(33) The respective associated bearing bodies of the upper carriage 21 roll on the distal face or the outer face of the upper horizontal wall portion 23, on the outer face of the side wall portion 25, and on the outer face of the side wall portion 26.

(34) The bearing bodies of the carriages 20, 21 are preferably outwardly cylindrical bearing bodies or antifriction bearings such as bearing rollers or bearing needles.

(35) The central rail 18, formed from an originally plane flat sheet of metal, is formed as a hollow profile and has along its length, according to the longitudinal axis L, a cohesively bonded connection or a welded connection or a narrow weld seam 29. The weld seam 29, preferably produced by a continuous laser method, connects, on one side of the central rail 18, narrow abutting edges of a lower subregion and an upper subregion of the central rail 18.

(36) The hollow profile shape of the central rail 18 permits a central rail 18 that is mechanically highly stable, in particular, one that is flexurally and torsionally rigid.

(37) In view of its configuration, the central rail 18 is additionally compact and saves on space and material.

(38) The fastening element 33 is connected to the rail body 31 by cohesive bonding, preferably by a welding process such as a laser welding process.

(39) In the illustrative embodiment according to FIGS. 2 to 9, there are precisely two identical fastening elements 33, 34 present on the rail body 31 of the cabinet rail 17. The basic shape of the fastening elements 33, 34 is an L shape. The statements made below concerning the fastening element 33 apply accordingly to the fastening element 34.

(40) In relation to the state of use, the fastening element 33 has a length L and a height H and, compared to the fastening element 33 shown in FIG. 3, a greater width B (see FIGS. 5 and 8). The material thickness or sheet metal thickness a (see FIG. 5) of the material of the fastening element 33 is, for example, in the range of preferably ca. 1 to ca. 1.5 millimeter. The width of the rail body 31 is comparable to the width B of the fastening element 33.

(41) The double-limbed fastening element 33 has a limb 37 oriented horizontally in the state of use of the full-extension mechanism 16, and a vertical limb 38. The vertical limb 38 and the horizontal limb 37 preferably enclose an angle α of 90 degrees with their two-dimensionally spanned main plane. The fastening element 33 is mirror-symmetrical to the mirror symmetry plane E (see FIG. 8) which is transverse or perpendicular to the longitudinal axis A of the fastening element 33 and bisects the fastening element 33 exactly at half the length thereof. The longitudinal axis A of the fastening element 33 is parallel to the longitudinal axis of the full-extension mechanism 16 and to the longitudinal axis A1 of the rail body 31.

(42) In the upper portion of the vertical limb 38, six mounting holes 39 are positioned alongside one another along the longitudinal extent of the fastening element 33, for example, screw holes to permit screwing onto a mating portion, e.g. the vertical side wall 5 of the furniture cabinet 2.

(43) The rail body 31 comprises a base portion 40, perpendicular wall portions 41 and 42 arranged along both longitudinal sides of the base portion 40 and angled upward at a right angle in cross section, and longitudinal webs 43, 44 which, at the upper end of the associated wall portion 41, 42, respectively, are angled inward with respect to the wall portion 41, 42.

(44) Moreover, at the front end and rear end of the rail body 31, two stops 45 are each formed by bent-over tongues on the longitudinal webs 43, 44.

(45) By way of a front edge portion 46, which belongs to an edge 48 of the horizontal limb 37, the fastening element 33 is connected by abutment to the rail body 31. The edge 48 defines a free end of the limb 37, which is remote from a bend 47 of the fastening element 33. The edge portion 46 is formed by a plane, narrow front face of the edge 48 at right angles to the upper face and lower face of the horizontal limb, which constitute opposite surface sides.

(46) The edge portion 46 abuts the vertical wall portion 41, or the vertical outer face thereof. By way of this abutting contact, the fastening element 33 is welded to the wall portion 41. The welding is carried out across the weld regions 49, 50 and 51 as seen in FIG. 9.

(47) The fastening element 33 and the rail body 31 are connected to each other along the edge portion 46, which is approximately hat-shaped in a front view.

(48) The edge portion 46, with its hat shape when viewed from the front, is composed of two lateral flat regions 53, 54 and, located between these, an upwardly deformed or raised region 52, which extends as far as the bend 47 or as far as the vertical limb 38. The upper face of the region 52 at the horizontal limb 37 falls away from the vertical limb 38 toward the free edge 48 or is oriented at a slight slope.

(49) Advantageously, according to the different heights at the edge portion 46, this therefore results in two different heights of the weld regions 49, 50, on the one hand, and of the weld region 51, on the other hand, externally on the wall portion 41, where the edge portion 46 is connected by welding. At a height lying farther below, the two portions of the edge portion 46 that are formed laterally with respect to the region 52 are connected to the weld regions 49 and 50. The portion of the edge portion 46 belonging to the region 52 is connected to the weld region 51 at a height located farther above on the wall portion 41.

(50) The fastening elements 33, 34 are set back from the end of the rail body 31 by the distance or offset V1 (see FIG. 6). An underside of the limb 37 and an underside of the base portion 40 have an offset V2. The offsets V1, V2 are advantageous from the point of view of manufacturing technology and for stability reasons.

LIST OF REFERENCE SIGNS

(51) 1 furniture item 2 furniture cabinet 3 drawer 4 side wall 5 side wall 5a inner face 6 full-extension rail 7 full-extension rail 8 full-extension rail 9 full-extension rail 10 drawer side wall 11 drawer side wall 12 front element 13 rear wall 14 drawer base 15 hollow-chamber drawer side 15a housing 15b inner structure 16 full-extension mechanism 17 cabinet rail 18 central rail 19 push-in element rail 19a upper face 19b hook element 20 carriage 20a portion 20b portion 21 carriage 21a portion 21b portion 22 movement mechanism 23 horizontal wall portion 24 horizontal wall portion 25 side wall portion 26 side wall portion 27 side wall portion 28 side wall portion 29 weld seam 30 sliding direction 31 rail body 32 pin 33 fastening element 34 fastening element 35 stop 36 stop 37 limb 38 limb 39 mounting hole 40 base portion 41 wall portion 42 wall portion 43 longitudinal web 44 longitudinal web 45 stop 46 edge portion 47 bend 48 edge 49 weld region 50 weld region 51 weld region 52 region 53 flat region 54 flat region