Pull-out guide for drawers

Abstract

A pull-out guide assembly for drawers comprising a drawer includes a pull-out rail fastened to the drawer, a supporting rail fastened to the body of the piece an article of furniture and a center rail differentially running between said such two rails on each side of the drawer. Running carriages which hold load-transmitting running rollers are arranged between said the rails. Driving rollers which run on the supporting rails rail and on the pull-out rails rail are mounted on the center rails rail. The center rails have Z-profiles rail has a Z-shaped profile, and the supporting rails rail and the pull-out rails rail have U-profiles U-shaped profiles which are substantially half-covered.

Description

FIELD AND BACKGROUND OF THE INVENTION

The invention relates to a pull-out guide assembly for FIGURES OF THE DRAWINGthe a drawer the a supporting rail 17 on the side of the a furniture body, the a pull-out rail 18 on the side of the drawer and the a center rail 19 running between said the two rails, 17, 18.

The pull-out guide assembly permits almost full extraction of the drawer, which is anchored in connected to the guide means assembly, from the body of the piece of furniture. Excessive extraction does not occur, however. In FIG. 2, a front edge of the body front edge is designated with reference number 20. This figure also shows that the rear end of the pull-out rail 18 is in its extreme front position still in the region of the body of the piece of furniture.

As can be seen from FIG. 3, the supporting rail 17 and the pull-out rail 18 have identical U-profiles U-shaped profiles which are half-covered by flanges 21, the rails 17, 18 being turned in with respect of to each other by 180°.

The center rail 19 has a Z-profile Z-shaped profile and projects in this arrangement with half of its profile into the pull-out rail 18 and half into the supporting rail 17. The horizontal Horizontal flanges 22, 23 of the center rail 19 form the running flanges for the running rollers 2, 3, 4, 5, 6 and 7. The running rollers 2-7 are held in cage-like running carriages which are not shown.

Two driving rollers 1 and 16 are mounted at on the center rail 19 by means of axles 24. The driving rollers 1, 16 run directly between the supporting rail 17 and the flange 21 of pull-out rail 18 (flanges 21), and there acts no load upon axle axles 24 have no load acting thereon.

The driving roller 16 is mounted on the center rail 19 advantageously with clearance and prevents a tilting clearance of the drawer, when the latter-mentioned it is in the inserted position.

Laterally acting compensating rollers 8,9,10,11,12,13,14,15 which guarantee the lateral stability of the drawer are mounted in the running carriages.

Means 25 preventing lifting of the center rail 19 are provided at the front end of the supporting rail 17.

The driving rollers 1, 16 as well as the running rollers 2-7 are advantageously made of plastics material. Hence the supporting rail 17, the pull-out rail 18 and the center rail 19 can be plastic-coated without causing damage to the coating when the drawer is in use.

As can be seen from FIG. 4, the pull-out guide assembly according to the invention may advantageously be mounted in a drawer with double side walls 26. In Fig. 4, the drawer bottom is designated with reference number 27.

Claims

1. A pull-out guide assembly for drawers a drawer and comprising, for each side of the drawer:

a pull-out rail to be fastened to the drawer,;

a supporting rail to be fastened to the body of the piece an article of furniture and;

a center rail differentially running between said two pull-out and supporting rails on each side of the drawer,; running carriages holding load-transmitting cylindrical bodies being arranged between said rails, and;

driving rollers running on the said supporting rails rail and on the said pull-out rails being rail and mounted on the said center rails, wherein rail;

said center rails have Z-profiles rail having a Z-shaped profile; and

said supporting rails rail and said pull-out rails have U-profiles rail having U-shaped profiles which are substantially half-covered and which are respectively upwardly and downwardly open.

2. A pull-out guide assembly as claimed in claim 1, wherein said driving rollers are received in the profile of said supporting rail.

3. A pull-out guide assembly as claimed in claim 1, wherein the said cylindrical bodies which are designed as comprise running rollers have each having a diameter substantially half the diameter of said driving rollers.

4. A pull-out guide assembly as claimed in claim 2 wherein some of said running rollers cylindrical bodies are arranged in said supporting rails rail, and said driving rollers are arranged at an opposite sides side of said center rail from said some cylindrical bodies.

5. A pull-out guide assembly as claimed in claim 1, wherein said cylindrical bodies and said driving rollers are arranged such that, in the an inserted position of the drawer, there are two .[×]. arrangements of two running rollers cylindrical bodies and one driving roller are arranged on a aligned along respective common vertical line on each side of the drawer lines.

6. A pull-out guide assembly as claimed in claim 1, wherein said supporting rail and said pull-out rail have identical profiles and are in, with respect of to the orientation of the profiles thereof, turned in with respect of to each other by 180°. 7. A pull-out guide assembly as claimed in claim 1, wherein said cylindrical bodies are arranged in running carriages. 8. In an article of furniture including a furniture body, a drawer movable into and out of said furniture body, and pull-out guide assemblies on opposite sides of said drawer for guiding movement thereof relative to said furniture body, the improvement wherein each said pull-out guide assembly comprises:

a pull-out rail fastened to said drawer;

a supporting rail fastened to a respective side of said furniture body;

a center rail differentially running between said pull-out and supporting rails;

load-transmitting cylindrical bodies arranged between said rails;

driving rollers running on said supporting rail and on said pull-out rail and mounted on said center rail;

said center rail having a Z-shaped profile; and

said supporting rail and said pull-out rail having U-shaped profiles which are substantially half-covered and which are respectively upwardly and downwardly open. 9. The improvement claimed in claim 8, wherein said driving rollers are received in the profile of said supporting rail. 10. The improvement claimed in claim 9, wherein some of said cylindrical bodies are arranged in said supporting rail, and said driving rollers are arranged at an opposite side of said

center rail from said some cylindrical bodies. 11. The improvement claimed in claim 8, wherein said cylindrical bodies are

arranged in running carriages. 12. The improvement claimed in claim 8, wherein said cylindrical bodies and said driving roller are arranged such that, in an inserted position of said drawer, there are two arrangements of two cylindrical bodies and one driving roller aligned along respective common vertical lines. 13. The improvement claimed in claim 8, wherein said supporting rail and said pull-out rail have identical profiles and are, with respect to the orientations of the profiles thereof, turned with respect to each other by 180°. 14. The improvement claimed in claim 8, wherein said cylindrical bodies comprise running rollers each having a diameter substantially half the diameter of said running rollers.