SU1253610A1 - Roller guide unit - Google Patents

Description

The invention relates to parts of furniture, in particular, roller guides for pushing for use, for use in furniture drawers, drawers for shelves in warehouses and tool rooms and other similar items that use drawers with heavy loads.

The purpose of the invention is to increase reliability.

FIG. Figure 1 shows the roller guide assembly, front view; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. 2

The roller guide assembly for drawers comprises a C-shaped support rail 2 located on the side of the housing, in which the carriage 3 with four rollers 4 of alternating stepped section is placed. The carriage is in contact with the working surfaces of smaller diameter rollers with C-shaped rolling tracks, and the surfaces of larger diameter rollers with rolling tracks of the support rail 5 of the box 6 located inside the carriage between the rollers, and the supporting rails contacting the working surfaces of the rollers in sections, staggered. There is a stop 7 in the front part of the C-shaped rail, and a stop 8 in the rear. At the end of the rail 5 there are stops 9. The stop 7 and the back stop 9 serve to prevent the drawer from falling out of the case. The stop 8 and the front stop 9 serve to prevent the carriage from moving under vibration conditions.

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The roller guide assembly operates as follows.

The box 6 with the help of the support rails 5 is moved. On the working surfaces of the larger diameter of the rollers 4 of the carriage 3, the carriage with rollers moves with the help of working surfaces of the rollers of smaller diameter along the support rails 2 mounted on the housing 1, so the carriage moves relative to the box 6 with the rail 5 to a greater distance than with respect to body 1 with rail 2.

By selecting the ratio of the diameters of the working surfaces of the rollers, it is possible to ensure that the carriage stops in the middle of the box when the box is closed, significantly reducing the load on the rollers in this box position. The interlacing of the contact sections of the support rails with the rollers in staggered order imparts stability to the rollers under high loads, eliminates their misalignment and jamming, which ensures an increase in the reliability of the operation of the guide assembly. The shape of the rollers and support rails limits the lateral movement of the box to 1-2 mm. In the closed position, the crate is held by its own weight, since the rail 2 is installed with an incline of OS ZO toward the drawer, and in the open position, the crate is held by its own weight and the slope of the drawer toward the opening, after picking the gaps between the slats and the carriage. In the open position of the crate, the carriage rests on the abutment 7, and the rear stop 9 rests on the carriage, which prevents the crate from moving further out of the casing.

Type A

Claims (1)

ROLLER GUIDE ASSEMBLY mainly for frames with drawers, including a carriage with rollers, each of which has at least two working surfaces of different diameters, and support rails in contact with the working surfaces of the rollers, one of which is mounted on the frame and the other on the box, characterized in that, in order to increase reliability, each of the rollers has at least one additional working surface, and the working surfaces of the rollers are placed in alternating sequence, and the supports Numerous rails are installed with the possibility of contact with the working surfaces of the rollers in areas staggered. FIG. 1