DEVICE FOR GUIDING A MOVABLE FURNITURE PART

Abstract

A device for guiding a movable furniture part received movably on a furniture carcass, including a carcass rail and a drawer rail, wherein the movably mounted drawer rail is moved in an opening and closing direction relative to the carcass rail. The carcass and drawer rails each have at least one flat running surface, wherein the running surface of the drawer rail is continuously uniformly flat. During relative movement between the drawer and carcass rails, load-transmitting rolling elements move along the running surface of the carcass and drawer rails. The running surface extends in a longitudinal extent and a transverse extent, wherein the longitudinal extent is perpendicular to the transverse extent, and the longitudinal extent of the running surface is oriented in the opening and closing direction of the drawer rail.

Claims

1. A device for guiding a movable furniture part, in particular a drawer, which can be received movably on a furniture carcass by means of the device, wherein the device comprises a carcass rail and a drawer rail, wherein the carcass rail can be arranged on the furniture carcass, wherein the movably mounted drawer rail can be moved in an opening and closing direction relative to the carcass rail, wherein the carcass rail and the drawer rail each have at least one flat running surface, wherein the running surface of the drawer rail is continuously uniformly flat, wherein, during the relative movement between the drawer rail and the carcass rail, load-transmitting rolling elements can be moved along the running surface of the carcass rail and the drawer rail, wherein the running surface extends in a longitudinal extent and a transverse extent, wherein the longitudinal extent is designed to be perpendicular to the transverse extent, wherein the longitudinal extent of the running surface is oriented in the opening and closing direction of the drawer rail, wherein the longitudinal extent of the running surface of the carcass rail is divided into two running sections, wherein the running sections of the running surface merge into one another without an offset, wherein, relative to a plane of a second running section, a plane of a first running section is oriented obliquely as regards the longitudinal extent and is not tilted as regards the transverse extent.

2. A device for guiding a movable furniture part, in particular a drawer, which can be received movably on a furniture carcass by means of the device, wherein the device comprises a carcass rail, a drawer rail and a central rail, wherein the central rail is arranged between the carcass rail and the drawer rail, wherein the carcass rail can be arranged on the furniture carcass, wherein the movably mounted drawer rail and the central rail can be moved in the opening and closing direction relative to the carcass rail, wherein the carcass rail, the central rail and the drawer rail each have at least one flat running surface, wherein the running surface of the drawer rail is continuously uniformly flat, wherein, during the movement of the drawer rail and/or central rail relative to the carcass rail, load-transmitting rolling elements can be moved along the running surfaces of the rails, wherein the running surface extends in a longitudinal extent and a transverse extent, wherein the longitudinal extent is designed to be perpendicular to the transverse extent, wherein the longitudinal extent of the running surface of the rails is oriented in the opening and closing direction of the drawer rail, wherein the longitudinal extent of the running surface of the carcass rail and/or central rail is divided into two running sections, wherein the running sections of the running surfaces merge into one another without an offset, wherein, relative to a plane of a second running section, a plane of a first running section is oriented obliquely as regards the longitudinal extent and is not tilted as regards the transverse extent.

3. The device for guiding a movable furniture part as claimed in claim 1, wherein the total longitudinal extent of the running surface has exactly two running sections.

4. The device for guiding a movable furniture part as claimed in claim 1, wherein a longitudinal extent of the first and second running sections in each case has a starting point and an end point, wherein the starting point of the second running section and the end point of the first running section are formed on an end-side edge of the running surface.

5. The device for guiding a movable furniture part as claimed in claim 4, wherein the end point of the longitudinal extent of the second running section corresponds to the starting point of the longitudinal extent of the first running section.

6. The device for guiding a movable furniture part as claimed in claim 1, wherein, in the mounted state of the device, the first running section is formed on a front end region of the rail in the opening direction of the drawer rail.

7. The device for guiding a movable furniture part as claimed in claim 1, wherein the longitudinal extent of the second running section of the rail extends over 60-90% of the total longitudinal extent of the running surface of the rail.

8. The device for guiding a movable furniture part as claimed in claim 1, wherein the longitudinal extent of the first running section of the rail extends over 10-40% of the total longitudinal extent of the running surface of the rail.

9. The device for guiding a movable furniture part as claimed in claim 1, wherein, in the mounted state of the device, the longitudinal extent of the second running section is oriented horizontally.

10. The device for guiding a movable furniture part as claimed in claim 1, wherein, in the mounted state of the device, the end point of the longitudinal extent of the first running section and the end point of the longitudinal extent of the second running section are spaced apart vertically from one another.

11. A piece of furniture having a movable furniture part which can be moved in the opening and closing direction relative to the furniture carcass by means of a device as claimed in claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Further features and advantages of the present invention are explained in detail below by means of an exemplary embodiment illustrated schematically in the figures.

[0065] FIG. 1 shows a piece of furniture in perspective from obliquely above with a drawer in the fully opened state on a furniture carcass, wherein the drawer can be moved in the opening and closing direction by means of the device according to the present invention;

[0066] FIG. 2 shows an exploded illustration of a device according to the present invention;

[0067] FIG. 3 shows a sectional view from the front of the device according to FIG. 2;

[0068] FIG. 4 shows a perspective view obliquely from above of a carcass rail according to FIG. 2;

[0069] FIG. 5 shows a perspective view obliquely from the front of a carcass rail according to FIG. 3;

[0070] FIG. 6 shows a perspective side view obliquely from above of a device according to FIG. 2 in the closed state;

[0071] FIG. 7 shows a perspective side view obliquely from above of a device according to FIG. 6 in the half-extended state; and

[0072] FIG. 8 shows a perspective side view obliquely from above of a device according to FIGS. 6 and 7 in the fully opened state.

DETAILED DESCRIPTION OF THE INVENTION

[0073] A piece of furniture 1 having a furniture carcass 2 and a drawer 3 which can be moved relative to the furniture carcass 2 is illustrated in FIG. 1. The drawer 3 can be moved relative to the furniture carcass 2 in the opening direction P1 and the closing direction P2 by means of the device 4 according to the present invention, such as, for example, a drawer pull-out guide. The furniture carcass 2 has a base 5, an upper panel 6, a rear wall 7 and two side walls 8, 9. The device 4 is preferably secured on the side walls 8, 9 of the furniture carcass 2. The device 4, which is designed as a full-extension runner, preferably has a carcass rail 10, a central rail 11 and a drawer rail 12 (see FIG. 2), wherein the carcass rail 10 is mounted on the side wall 8, 9 of the furniture carcass 2. Advantageously, a carcass rail 10 is attached to each side wall 8, 9 of the furniture carcass 2, wherein the carcass rails 10 are preferably attached to the side walls 8, 9 of the furniture carcass 2 in a mirror-symmetrical manner. Furthermore, the drawer 3 is preferably detachably connected to the drawer rail 12. The drawer 3 preferably has a drawer bottom 13, drawer side walls 14, 15, a drawer front 16 and a drawer rear wall 17, wherein the drawer bottom 13 preferably rests on the drawer rail 12.

[0074] The device according to the present invention is illustrated in FIG. 2, wherein the carcass rail 10 has a running web 18. Running webs 19, 20 of the central rail 11 are preferably arranged above and below the running web 18 of the carcass rail 10 (see FIG. 3). In this case, rolling elements 21 are arranged between the lower running web 19 of the central rail 11 and the running web 18 of the carcass rail 10. The rolling elements 21 can be moved along the running surface 22 of the lower running web 19 of the central rail 11 and the lower running surface 23 of the running web 18 of the carcass rail 10 during the movement of the central rail 11 relative to the carcass rail 10 or during the opening or closing movement of the drawer 3. Further rolling elements 24 are preferably arranged between the running web 18 of the carcass rail 10 and the upper running web 20 of the central rail 11, it being possible for the rolling elements 24 to be moved along the upper running web 25 of the running web 18 of the carcass rail 10 and the running web 26 of the upper running web 20 of the central rail 11.

[0075] The rolling elements 21, 24 are arranged, for example, in a carriage 27, wherein the carriage 27 preferably has an upper row with the rolling elements 24 and a lower row with the rolling elements 21. The running web 18 of the carcass rail 10 is preferably arranged between the two rows of rolling elements. Furthermore, the carriage 27 also has rolling elements 28 on the sides of the carriage 27, wherein the rolling elements 28 are moved along the lateral running webs 29 of the carcass rail 10 and/or the lateral running webs 39 of the central rail 11, thus enabling the carriage 27 to be moved along the running webs 18, 19, 20 and lateral running webs 29, 39 of the central rail 11 and carcass rail 10. An engagement element 30 is additionally formed on the carriage 27 and interacts with a synchronization wheel 31 on the central rail 11. The synchronization wheel 31 is rotatably arranged on the central rail 11, the synchronization wheel 31 also interacting with an engagement contour 32 on a second carriage 33. Through the engagement of the synchronization wheel 31 in the engagement element 30 of carriage 27 and in the engagement contour 32 on the second carriage 33, it is possible, for example, to synchronize the movement of the central rail 11 and of the drawer rail 12 in the opening and closing direction P1, P2.

[0076] The second carriage 33 has a row of rolling elements 34, wherein the rolling elements 34 are arranged between the upper running web 20 of the central rail 11 and a running web 35 of the drawer rail 12. The rolling elements 34 can be moved along an upper running surface 36 of the upper running web 20 of the central rail 12 and a running surface 37 of the running web 35 of the drawer rail 12. The drawer 3 preferably rests by means of the drawer bottom 13 on the upper surface of the running web 35 of the drawer rail 12. The second carriage 33 preferably furthermore comprises lateral supporting elements 38, wherein the lateral supporting elements 38 are arranged, for example, between the lateral running webs 39 of the central rail 11 and the lateral running webs 40 of the drawer rail 12. The carriage 33 is also moved, for example, in a supporting manner along the running surfaces 36, 37 and lateral running surfaces 39, 40 of the central rail 11 and the drawer rail 12, respectively.

[0077] FIGS. 4 and 5 illustrate the carcass rail 10 in different views. The carcass rail 10 is formed in one piece as a bent sheet-metal part, for example. The carcass rail 10 comprises a mounting strip 41, a bottom plate 42, the lateral running web 29 and the running web 18. By means of the mounting strip 41, the carcass rail 10 can be secured on the side wall 8, 9 of the furniture carcass 2 by fastening mechanisms, such as, for example, screws. The bottom plate 42, the lateral running web 29 and the running web 18 preferably form a U shape, wherein the bottom plate 42 connects the mounting strip 41 and the lateral running surface 29 to one another. The U shape is preferably open in the direction of the mounting strip 41. The lateral running surface 29 preferably connects the running surface 18 and the bottom plate 42.

[0078] As illustrated in FIGS. 4 and 5, the running surface 25 of the carcass rail 10 advantageously has two running sections 43, 44. The running sections 43, 44 preferably each form a plane, wherein the planes of the running sections 43, 44 have a longitudinal extent L1, L2 and a transverse extent. The longitudinal extent L1 of a first running section 43 extends from a starting point 45 to an end point 46, wherein the end point 46 preferably ends at a front end-side edge 47 of the running surface 25 of the carcass rail 10. The longitudinal extent L2 of a second running section 44 extends from a starting point 48 to an end point 49, wherein the starting point 48 begins at a rear end-side edge 50 of the running surface 25 of the carcass rail 10. In the mounted state of the carcass rail 10, the front end-side edge 47 of the running surface 25 of the carcass rail 10 is arranged on the side wall 8, 9 of the furniture carcass 2 in the vicinity of the opening 52 of the furniture carcass 2. With a closed drawer 3, the front end-side edge 47 of the running surface 25 of the carcass rail 10 is situated in the downstream region of the drawer front 16.

[0079] Since the first running section 43 merges smoothly into the second running section 44, the end point 49 of the longitudinal extent L2 of the second running section 44 corresponds, for example, to the starting point 45 of the longitudinal extent L1 of the first running section 43.

[0080] The longitudinal extent L1 of the plane of the first running section 43 is preferably oriented obliquely relative to the longitudinal extent L2 of the plane of the second running section 44. The transverse extents of the planes of the first and second running sections 43, 44 are perpendicular to the longitudinal extent of the planes of the first and second running sections 43, 44, wherein the transverse extent of the first running section 43 is parallel to the transverse extent of the second running section 44. The transverse extents of the two running sections 43, 44 are preferably not tilted relative to one another. The angle a which is enclosed between the longitudinal extent of the first running section and the longitudinal extent of the second running section is preferably less than 180° and greater than 170°.

[0081] In the mounted state of the carcass rail 10 on the side wall 8, 9 of the furniture carcass 2, the longitudinal extent L2 of the plane of the second running section 44 is preferably oriented horizontally, wherein the longitudinal extent L1 of the plane of the first running section 43 is oriented transversely with respect to a horizontal or vertical. The end point 46 of the longitudinal extent L1 of the first running section 43 and the end point 49 of the longitudinal extent L2 of the second running section 44 are advantageously spaced apart vertically from one another or have a height difference (see FIG. 5). This height difference advantageously contributes to compensating for the lowering of the drawer 3 in the open state. The total longitudinal extent of the running surface 25 comprises the longitudinal extent L1 of the first running section 43 and the longitudinal extent L2 of the second running section 44, wherein the longitudinal extent L1 of the first running section 43 is 10% to 40% of the total longitudinal extent of the running surface 25 of the carcass rail 10.

[0082] In FIGS. 6 to 8, the device 4 is illustrated in the different states during the movement of the drawer 3 in the opening direction. FIG. 6 shows the closed state, FIG. 7 shows the half-extended state, and FIG. 8 shows the fully extended or fully open state. In FIGS. 6 to 8, only the carcass rail 10 has two running sections 43, 44.

[0083] In the closed state of the drawer 3, the 3 rails 10, 11, 12 lie one above the other (see FIG. 6), wherein a rear end of the running surfaces 22, 26, 36, 37 of the central rail 11 and of the drawer rail 12 preferably project beyond the second running section 44 of the running surface 25 of the carcass rail 10. In the mounted state of the carcass rail 10 on the side wall 8, 9 of the furniture carcass 2, the rear ends of the running surfaces 22, 26, 36, 37 of the central rail 11 and of the drawer rail 12 lie in the vicinity of the rear wall 7 of the furniture carcass 2, for example. In the mounted state, the first running section 43 of the running surface 25 of the carcass rail 10 is preferably arranged in the vicinity of the opening 52 of the furniture carcass 2, wherein the front ends of the running surfaces 22, 26, 36, 37 of the drawer rail 12 and of the central rail 11 are preferably also arranged in the vicinity of the opening 52 of the furniture carcass 2 in the closed state of the drawer 3. Since, in the mounted state, the upper surface of the drawer rail 12 is connected, for example, to the drawer bottom 13, the front end of the running web 35 of the drawer rail 12 and thus also of the running surface 37 of the drawer rail 12 preferably rests against the drawer front 16, and the rear end of the running web 35 of the drawer rail 12 rests against the drawer rear wall 17 during the opening and closing movement of the drawer 3.

[0084] In the closed state of the drawer 3, the carriages 27, 33 are arranged, for example, centrally on the rails 10, 11, 12 or running surfaces 22, 23, 25, 26, 36, 37 of the rails 10, 11, 12. Thus, the carriage 27, in which the rolling elements 21, 24 are arranged between the running web 18 of the carcass rail 10 and the running webs 19, 20 of the central rail 11, is preferably situated on the second running section 44 of the running surface 25 of the carcass rail 10. In this way, the longitudinal extents of the running webs 19, 20, 35 or of the running surfaces 22, 26, 36, 37 of the central rail 11 and of the drawer rail 12 are preferably oriented parallel to the longitudinal extent L2 of the second running section 44 of the carcass rail 10. In other words, in the mounted state of the carcass rail 10 on the side wall 8, 9 of the furniture carcass 2, the longitudinal extents of the running surfaces 22, 26, 36, 37 of the central rail 11 and drawer rail 12, as well as the longitudinal extent L2 of the second running section 44 of the carcass rail 10, are preferably oriented horizontally.

[0085] If the drawer 3 is now moved from a closed position in the opening direction P1, the central rail 11 is moved relative to the carcass rail 10, and the drawer rail 12 is moved relative to the central rail 11 and carcass rail 10, for example (see FIG. 7). In this process, the carriages 27, 33 are moved along the running surfaces 22, 23, 25, 26, 36, 37 of the rails 10, 11, 12, wherein the carriage 27, in which the rolling elements 21, 24 are arranged between the running web 18 of the carcass rail 10 and the running webs 19, 20 of the central rail 11, hardly moves in the opening direction P1. This means that carriage 27 is preferably still situated on the second running section 44 of the carcass rail 10 even in the semi-extended state (see FIG. 7) and thus the running surfaces 22, 26, 36, 37 of the drawer rail 12 and the central rail 11 continue to be oriented horizontally. In the half-extended state, carriage 33, in which the rolling elements 34 are arranged between the running web 20 of the central rail 11 and the running web 35 of the drawer rail 12, is situated approximately halfway along the running web 20 of the central rail 11 and approximately in the front half of the running web 18 of the carcass rail 10. In this case, the front half of the running web 18 of the carcass rail 10 is preferably the half of the running web 18 which is oriented in the direction of the opening 52 of the furniture carcass 2.

[0086] During the further opening movement of the drawer 3 or of the central rail 11 and of the drawer rail 12 in the opening direction P1, carriage 27 reaches the rear end of the central rail 11 during the relative movement between the central rail 11 and the carcass rail 10, wherein there is a boundary feature (not illustrated) for the carriage 27 at the rear end of a lateral running web 39 of the central rail 11, thus enabling the carriage 27 to be moved in the opening direction P1 with the central rail 11 at the rear end of the central rail 11 by the boundary feature. In this case, the carriage 27 preferably reaches a stop 51 (see FIG. 4) at the front end of the carcass rail 10, and therefore the carriage 27 cannot be moved any further in the opening direction P1.

[0087] Carriage 33 is also preferably moved to the rear end of the drawer rail 12 during the relative movement between the central rail 11 and the drawer rail 12. In this case, e.g. at the rear end of a lateral running web 40 of the drawer rail 12, there is, for example, a boundary feature (not illustrated) for the carriage 33, thus enabling the carriage 33 to be moved in the opening direction P1 with the drawer rail 11 at the rear end of the drawer rail 11 by the boundary feature.

[0088] When the drawer 3 is fully open (see FIG. 8), the carriage 27 or the rolling elements 24 is preferably situated between the stop 51 of the carcass rail 10 and the boundary feature of the central rail 11, with the result that the rolling elements 24 are now on the first running section 43 of the carcass rail 10. As a result, the carriage 27 and thus also the longitudinal extent of the running surface of the central rail 11 are preferably oriented obliquely upward or obliquely with respect to a horizontal or vertical. That is to say that the longitudinal extent of the running surface 22, 26, 36 of the central rail 11 is oriented obliquely relative to the longitudinal extent L2 of the second running section 44 of the carcass rail 10. As a result of the oblique position of the running surfaces 22, 26, 36 of the central rail 11, the running surface 37 of the drawer rail 12 is also oriented obliquely upward, wherein the longitudinal extent of the running surface 22, 26, 36 of the central rail 11 and the longitudinal extent of the running surface 37 of the drawer rail 12 are approximately parallel.

LIST OF REFERENCE SIGNS

[0089] 1 furniture

[0090] 2 furniture carcass

[0091] 3 drawer

[0092] 4 device

[0093] 5 base

[0094] 6 upper panel

[0095] 7 rear wall

[0096] 8 side wall

[0097] 9 side wall

[0098] 10 carcass rail

[0099] 11 central rail

[0100] 12 drawer rail

[0101] 13 drawer bottom

[0102] 14 drawer side wall

[0103] 15 drawer side wall

[0104] 16 drawer front

[0105] 17 drawer rear wall

[0106] 18 running web

[0107] 19 running web

[0108] 20 running web

[0109] 21 rolling element

[0110] 22 running surface

[0111] 23 running surface

[0112] 24 rolling element

[0113] 25 running surfaces

[0114] 26 running surfaces

[0115] 27 carriage

[0116] 28 rolling element

[0117] 29 lateral running web

[0118] 30 engagement element

[0119] 31 synchronization wheel

[0120] 32 engagement contour

[0121] 33 carriage

[0122] 34 rolling element

[0123] 35 running web

[0124] 36 running surface

[0125] 37 running surface

[0126] 38 supporting body

[0127] 39 lateral running web

[0128] 40 lateral running web

[0129] 41 mounting strip

[0130] 42 bottom panel

[0131] 43 running section

[0132] 44 running section

[0133] 45 starting point

[0134] 46 end point

[0135] 47 edge

[0136] 48 starting point

[0137] 49 end point

[0138] 50 edge

[0139] 51 stop

[0140] 52 opening