RU233303U1 - Frame of a collapsible metal cabinet - Google Patents

Abstract

The utility model relates to the production of metal furniture from thin steel sheets, in particular to three-dimensional frames that meet the requirements of a given rigidity. In order to reduce the metal consumption of the cabinet and increase its strength, the frame comprises a bottom, left and right side walls, a lid, two rear panels that form the rear wall of the frame, as well as a partition located inside the frame and shelves located between the partition and the side walls, wherein the said parts of the cabinet are detachably connected to each other into a single structure that has a given rigidity. In the front part, the bottom and the lid are connected to the side walls of the frame by corner connectors that have pins, the ends of which are connected by fasteners to the bottom, lid and side walls. The pins of the lower connectors are located in the lower sockets of the side walls, the pins of the upper connectors are located in the upper sockets of the side walls, the parts of the frame are connected to each other by screws located in the aligned holes of these parts along the entire perimeter of the frame. The shelves are connected to the side walls by hooks located on the side walls and made integral with the side walls, which are overlapped on the sides of the bottom, cover and sides of the rear wall panels. In front, the side walls have load-bearing elements made integral with the side walls by bending the ends of the walls, each load-bearing element has an L-shape in cross-section. In the corner zones of the front sides of the bottom and cover, cutouts are made in which corner connectors are located in the working position, while in the side walls, at the top and bottom of the walls, cutouts are made in which in the working position the side of the cover is located flush at the top, and at the bottom, in a similar cutout, the side of the bottom is located flush. Each side wall of the frame has horizontally and vertically oriented stiffening ribs extruded outward, and the hooks of each side wall are located between adjacent horizontal stiffening ribs on a flat plane of the side wall.

Description

The utility model relates to the production of metal furniture from thin steel sheets, in particular to three-dimensional frames that meet the requirements of specified rigidity.

A significant problem in the manufacture of frameless frames of collapsible metal cabinets from thin steel sheets is the task of ensuring the rigidity of the cabinet structure and especially the rigidity of the doorway, which, if insufficient rigidity, is subject to distortions, which are the cause of the cabinet door getting jammed in its opening. If the distortion is not eliminated, this leads to deformations of the cabinet doors and their breakage.

There are known frames made of sheet metal, each of which contains a bottom, side and rear walls, a lid and a bottom connected to each other by fasteners (RU 21133 U1, 27.12.2001. RU 200265 U1, 15.10.2020. RU 2704707 C1, 30.10.2019 RU 2486855 C1, 10.07.2013. RU 165411 U1, 20.10.2016. GB 1322583 A, 05.10.1970. DE 202024001348 A, 19.06.2024. CN 116965642, 31.10.2023).

Of the known frames, the frame of a metal cabinet is close to the frame presented in this description, having common features with the metal frame presented in this description, and each of them has a back, side walls, a lid and a bottom with flanges at the ends (RU 165411 U1, 20.10.2016). In order to eliminate the distortion of the doorway, this design is reinforced with a frame connected to the frame made of a thin steel sheet, which significantly complicates the design of the cabinet. The analogue disclosed in the patent has a comparatively large metal content due to the fact that each wall of the cabinet, made of sheet metal, has a large area requiring fixation of the sheet in the design position, however, in order to reduce technological operations, this problem is mainly solved by using cabinet walls in the manufacturing process by thickening them. As a result, firstly, there is an unjustified strength of the cabinet walls, and secondly, a significant increase in the metal content of the cabinets.

Patent RU 21133 U1 discloses a cabinet consisting of side and rear walls, a bottom and a ceiling, assembled into a volume and made of sheet metal, with stiffening ribs made of section metal, a door, removable shelves and drawers installed on supports fixed to the side walls, wherein a U-shaped bend is made along the perimeter of the side and rear walls, the bottom and the ceiling and they are assembled into a volume using pull-out rivets, while the stiffening ribs are a box-shaped profile in which openings for installing supports are made along the entire length (RU 21133 U1, 27.06.2003 - prototype).

The common features of the utility model presented in this description and the design disclosed in the prototype are that they relate to the production of volumetric furniture from thin steel sheets, each of which contains a frame of a collapsible metal cabinet containing a bottom, left and right side walls, a lid, a rear wall of the frame, as well as a partition located inside the frame and shelves located between the partition and the side walls, while the structures have stiffening ribs on the side walls of the cabinet. All parts of the frame are connected to each other into a single metal structure with a given rigidity.

The cabinet layout disclosed in the prototype does not fully satisfy the requirements for manufacturing technology, since permanent connections (rivets) are used in the connections, and the vertically oriented stiffening ribs of the cabinet walls do not ensure the rigidity of the cabinet walls when the wall bends in the transverse plane.

The technical result of the frame of the collapsible metal cabinet presented in this description is an increase in the strength of the cabinet frame.

The technical result is obtained by a frame of a collapsible metal cabinet, comprising a bottom, left and right side walls, a cover, two rear panels forming the rear wall of the frame, as well as a partition located inside the frame and shelves located between the partition and the side walls, wherein the said parts of the cabinet are detachably connected to each other into a single structure having a given rigidity, wherein in the front part the bottom and the cover are connected to the side walls of the frame by corner connectors having pins, the ends of which are connected by fasteners to the bottom, cover and side walls, wherein the pins of the lower connectors are located in the lower sockets of the side walls, the pins of the upper connectors are located in the upper sockets of the side walls, wherein the parts of the frame are connected to each other by screws located in the aligned holes of these parts along the entire perimeter of the frame, wherein the shelves are connected to the side walls by hooks located on the side walls and made integral with the side walls, wherein the side walls are arranged overlapping the sides of the bottom, cover and sides of the panels of the rear wall, wherein the front side walls have power elements made integral with the side walls by bending the ends of the walls, each power element has an L-shape in cross-section, wherein in the corner zones of the front sides of the bottom and cover there are cutouts in which in the working position corner connectors are located, wherein in the side walls, at the top and at the bottom of the walls, there are cutouts in which in the working position the side of the cover is located flush at the top, and at the bottom, in a similar cutout, the side of the bottom is located flush, wherein each side wall of the frame has horizontally and vertically oriented stiffening ribs extruded outward, and the hooks of each side wall are located between adjacent horizontal stiffening ribs on a flat plane of the side wall.

Each panel of the rear wall of the frame has a flange at the end, located at an angle of no more than 75° to the side of the panel, in the flange of the rear panel there is a hole in which a screw is located, connecting the side of the side wall with the side of the panel, for which purpose the side of the side wall is made with a counter flange, in which a hole is made for the screw, wherein the counter flange is located at an angle of no more than 75° to the side of the panel and to the side of the side wall of the frame.

The stiffening ribs of each side wall form closed rectangular shapes around the perimeter.

Fig. 1 shows a frameless frame of a collapsible metal two-section cabinet divided into two sections by a partition located inside the cabinet.

Fig. 2 shows the frame of a collapsible metal cabinet with shelves installed in its space.

Fig. 3 - the frame of a collapsible metal two-section cabinet and its doors in the pre-assembly position.

Fig. 4 shows the frame of a collapsible two-section metal cabinet with doors hung on its stiffening elements.

Fig. 5 - the frame of a collapsible metal two-section cabinet in the pre-assembly position of its parts.

Fig. 6 - the frame of a collapsible metal single-section cabinet with a door hung in the frame opening.

In Fig. 7 - place A in Fig. 6.

Fig. 8 shows the connection unit of the left side wall of the frame with the panel of the rear wall of the frame.

The frame of the collapsible metal cabinet contains a bottom 1 (Fig. 5), side left and right walls 2 and 3 respectively, a cover 4, two rear panels 5 and 6, which form the rear wall of the cabinet, connected to each other. Inside the cabinet there is a partition 7 and between it and the side walls there are shelves 8 and 9 in the upper part of the frame. Similar shelves (not shown) can be installed in the lower part of the cabinet frame. All the mentioned parts of the cabinet are connected to each other in a corresponding manner into a single structure of the cabinet frame, which has a given rigidity.

The bottom 1 and the cover 4 are connected to the side walls 2 and 3 of the frame by corner connectors 10, which have pins 11 at their ends. The ends of the connectors 10 are connected by fasteners to the bottom, cover and side walls. The pins of the lower connectors 19 are located in the lower sockets 12 of the side walls 2 and 3 of the frame (in Fig. 5 one socket 12 is shown in the right side wall 3). The pins 11 of the upper connectors 10 are located in the upper sockets 12 of the side walls 2 and 3.

The side walls, bottom, cover, rear panels and partition are connected to each other in the appropriate places with screws 13 (Fig. 1, 6), located in the aligned holes of these parts along the entire perimeter of the frame formed by these parts. Shelves 8 and 9 are connected to side walls 2 and 3 with hooks 14 (Fig. 7), located on the side walls and made integral with the side walls by means of notches in the walls and bending the flat hooks towards the inside of the cabinet. If necessary, the shelves are additionally connected with screws 13 (Fig. 2) to side walls 2 and 3 of the frame. Side walls 2 and 3 are located with an overlap on the side sides of the bottom 1 and cover 4 as shown in Fig. 1. In front, side walls 2 and 3 have load-bearing elements 15 and 16, made integral with the side walls by bending the ends of the walls. Each such load-bearing element has an L-shape in cross-section, possessing high rigidity and resistance to bending in the transverse direction. Left and right doors 17 and 18 (Fig. 3, 4), not included in the structure of the cabinet frame, are hung on these elements 15 and 16. In other modifications, the cabinet has no doors and its space is connected with the space of the room.

In the front sides of the bottom 1 and cover 4, in their corner zones (Fig. 5), cutouts 19 and 20 are made, in which corner connectors 10 are located in the working position. In the side walls 2 and 3, at the top and bottom of the walls, cutouts 21 are made (one cutout 21 is shown in Fig. 5), in which in the working position, the side 23 of the cover is located flush at the top, and at the bottom, in a similar cutout, the side 24 of the bottom 1 is located flush. Position 22 in Fig. 5 shows doors that are not part of the frame structure.

Each panel 5 or 6 of the rear wall of the frame (Fig. 8) has a flange 25 at the end, located at an angle of no more than 75° to the side 26 of panel 5. In the flange 25, an opening is made, in which a screw 27 is located, connecting the side 28 of the side wall 2 with the side 26 of the panel. For this, the side 28 of the side wall is made with a counter flange 29, in which a hole is made for the screw 27. The counter flange 29 is also located at an angle of no more than 75° to the side 26 of panel 5 and to the side 28 of the side wall 2 of the frame. Such a connection of the side walls of the frame with the panels of the rear wall is made for unhindered access of the tool to the screw 27 of the connection, located in the cramped corner area of the frame.

Each side steel wall of the frame (Fig. 1) has extruded stiffening ribs, horizontal stiffening ribs 30 and vertical stiffening ribs 31, which, when connected to each other, form closed-perimeter rectangular shapes, giving each side wall comparatively greater rigidity. In Fig. 5, the cabinet supports, attached to the bottom 1, are shown by position 32.

Taken together, the above-mentioned design features of the frame made it possible to significantly increase the rigidity of the frame as a whole, all parts of which are made of steel sheets with a thickness of 0.4-0.45 mm.

Claims (3)

1. A frame for a collapsible metal cabinet comprising a bottom, left and right side walls, a cover, two rear panels forming the rear wall of the frame, as well as a partition located inside the frame and shelves located between the partition and the side walls, wherein the said parts of the cabinet are detachably connected to each other into a single structure, characterized in that in the front part the bottom and the cover are connected to the side walls of the frame by corner connectors having pins, the ends of which are connected by fasteners to the bottom, cover and side walls, wherein the pins of the lower connectors are located in the lower sockets of the side walls, the pins of the upper connectors are located in the upper sockets of the side walls, wherein the parts of the frame are connected to each other by screws located in the aligned holes of these parts along the entire perimeter of the frame, wherein the shelves are connected to the side walls by hooks located on the side walls and made integral with the side walls, wherein the side the walls are arranged in an overlap with the sides of the bottom, the cover and the sides of the panels of the rear wall, wherein the front side walls have power elements made integral with the side walls by bending the ends of the walls, each power element has an L-shape in cross-section, wherein in the corner zones of the front sides of the bottom and the cover there are cutouts in which in the working position there are corner connectors, wherein in the side walls, at the top and at the bottom of the walls, there are cutouts in which in the working position there are flush - at the top there is the cover side, and at the bottom, in a similar cutout there is the bottom side, wherein each side wall of the frame has horizontally and vertically oriented stiffening ribs extruded outward, and the hooks of each side wall are located between adjacent horizontal stiffening ribs on a flat plane of the side wall. 2. The frame according to item 1, characterized in that each panel of the rear wall of the frame has a flange at the end located at an angle of no more than 75° to the side of the panel, in the flange of the rear panel there is a hole in which a screw is located, connecting the side of the side wall with the side of the panel, for which purpose the side of the side wall is made with a counter flange in which a hole is made for the screw, and the counter flange is located at an angle of no more than 75° to the side of the panel and to the side of the side wall of the frame. 3. The frame according to item 1, characterized in that the stiffening ribs of each side wall form rectangular shapes closed along the perimeter.