A foldable drawer

Abstract

A foldable drawer includes a front panel, a rear frame, two side frames, and a bottom frame. The rear frame, side frames, and bottom frame each form a rectangular metal frame. The bottom edges of the rear frame and two side frames are hinged to the rear and side edges of the bottom frame, respectively, via connecting members. Each side frame has a connecting hook on its rear edge adjacent to the two sides of the rear frame, allowing it to be hooked onto the side of the rear frame. The side frames are positioned on the sides of the rear frame via these hooks. At least one flattened section in the front edge of the side frame facing the front panel and the front edge of the bottom frame facing the front panel of the bottom frame each form a positioning hole. The positioning hole is secured to the front panel by a first screw. The front panel, side frames, and rear frame enclose the top of the bottom frame to form a storage space. Multiple casters are connected to the bottom surface of the bottom frame. Each caster includes a connecting piece, a support frame, and a wheel. This invention has a simple structure, is easy to assemble and install, and can significantly reduce packaging and transportation costs.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and more specifically to a foldable drawer. Background Technology

[0002] Currently, there are more and more furniture options on the market designed to increase storage space, and the use of drawers under beds or sofas is becoming an increasingly popular choice. Existing technology typically uses a panel structure, which usually includes front, back, bottom, left, and right side panels, resulting in a large and heavy drawer with high packaging and transportation costs.

[0003] If the drawer side panels are detachable, the assembly process is complex and time-consuming because the panels need to be fixed together with bolts. After assembly, the drawer needs to be installed under the bed or sofa using slides, further complicating the assembly process and making it cumbersome for consumers. Furthermore, using bolts and other fasteners can result in a large number of parts, which are easily missed or lost during disassembly. Moreover, production costs and packaging / transportation expenses are also higher.

[0004] To reduce weight, some designs use a grid-like frame structure for the side panels. However, connecting adjacent grid-like side panels requires numerous connectors with slots, increasing the number of components and adding installation steps for the average consumer. Furthermore, after assembly, the grid-like side panels need to be connected to the front panel, requiring a further installation structure design. Additionally, rollers are installed on the bottom side panels using nuts, increasing the installation complexity and steps. This increases the number of parts, making it easier for parts to be missed or lost during manufacturer distribution and customer disassembly. It also leads to higher production costs and is less convenient to install and use.

[0005] In view of this, the designer has deeply conceived and actively researched and improved the design of the drawer, which resulted in many shortcomings and inconveniences. This led to the development of this creation. Utility Model Content

[0006] The purpose of this utility model is to provide a foldable drawer with a simple structure, convenient assembly and installation, and lightweight overall, which can greatly reduce packaging and transportation costs.

[0007] To achieve the above objectives, the solution of this utility model is:

[0008] A foldable drawer, characterized in that it includes a front panel, a rear frame, two side frames and a bottom frame, wherein the rear frame, side frames and bottom frame respectively form a rectangular metal frame.

[0009] The bottom edges of the rear frame and the two side frames are respectively hinged to the rear side and the two side sides of the bottom frame through the lap joint. Each side frame has a connecting hook on the rear side of the two side frames adjacent to the rear frame. The side frames are positioned on both sides of the rear frame by the connecting hook. The two side frames and the rear frame stand on the bottom frame respectively during assembly.

[0010] The front side of the side frame facing the front panel and the front side of the bottom frame facing the front panel in the side frame are respectively flattened and a positioning hole is formed in at least one of the rods. The positioning hole is connected to the front panel by a first screw. The front panel, the two side frames and the rear frame surround the bottom frame to form a storage space.

[0011] The bottom of the base frame is connected to multiple casters. Each caster includes a connecting plate, a support frame, and a wheel. The connecting plate is fixed to the base frame. The wheel is rotatably connected to the bottom of the support frame. The top of the support frame has a mounting plate. One end of the bottom surface of the connecting plate has a slot into which one end of the mounting plate can be inserted. After the mounting plate is inserted into the slot, it is fixed to the bottom of the connecting plate by a second screw.

[0012] Furthermore, the bottom frame has multiple longitudinal inner rods arranged in parallel. The connecting piece includes extended sides that are curled upward on both sides of the square piece and can be hooked onto two adjacent longitudinal inner rods of the bottom frame. The two extended sides of the connecting piece are hooked onto two adjacent longitudinal inner rods of the bottom frame and fixed to the longitudinal inner rods of the bottom frame.

[0013] Furthermore, the slot is formed by a right-angled piece at the bottom of the connecting piece. The right-angled piece extends downward from the bottom of the connecting piece to form a vertical section and then extends vertically to one side to form a horizontal piece. The mounting piece is inserted horizontally between the horizontal piece and the connecting piece to form a slot and then abuts against the vertical section.

[0014] Furthermore, the bottom of the frame is connected to at least two rows of caster sets, each row of caster sets having two casters. The support frame includes side plates extending downward from both sides of a mounting plate to form side plates. The wheels are connected to the bottom between the two side plates. One end of the mounting plate has a first mounting hole, and the connecting plate has a corresponding second mounting hole. The second screw passes through the first mounting hole and the second mounting hole in sequence for fixing.

[0015] Furthermore, the lap joint includes an upper section and a lower section. The upper section forms a C-shaped buckle, and the lower end extends outward from the opening end of the C-shaped buckle to form two baffles. The bottom edges of the rear frame and the two side frames are inserted into the C-shaped buckle. The rear side and the two side edges of the bottom frame are located below the C-shaped buckle and between the two baffles.

[0016] Furthermore, the connecting hook is set at the top of the rear side of the side frame, and the connecting hook is set at the tail end of the upper side of the side frame located in the upper part of the side frame. The side frames on both sides of the rear frame form the rear frame side rods. The connecting hook extends forward from the tail end of the upper side of the side frame and wraps around to form a hook that can be hooked at the top corner of the rear frame side rod.

[0017] Furthermore, in the pole body located near the upper end of the rear frame side pole, a sleeve section with a smaller outer diameter is formed by flattening or shaving the pole body. After the connecting hook is sleeved on the sleeve section, it moves upward and is hooked and locked on the rear frame side pole body.

[0018] Furthermore, the rear frame, side frames, and bottom frame are each enclosed by iron wire to form a rectangular frame, and multiple internal rods are interwoven horizontally and vertically within the frame to form a grid. When the rear frame and side frames stand on the bottom frame, longitudinal internal rods are perpendicular to the bottom edges of the rear frame and side frames, as well as the side edges of the bottom frame, with overlapping fasteners fastened to one side of the longitudinal internal rods. The bottom frame has multiple longitudinally arranged and parallel bottom frame internal rods, and at least two bottom frame horizontal internal rods are also provided within the bottom frame, perpendicular to the multiple bottom frame longitudinal internal rods, with overlapping fasteners fastened to one side of the longitudinal internal rods and simultaneously located on one side of the bottom frame horizontal internal rods.

[0019] Furthermore, the folding drawer is located at the bottom of the furniture, and the side of the furniture has a side support rod with at least one hanging hole. The front panel is flat, and the rear wall of the front panel has a locking screw that can be inserted into the hanging hole and then stopped. The locking screw is stopped in the hanging hole to prevent the front panel from moving outward.

[0020] Furthermore, the hanging hole is gourd-shaped, and the snap-fit ​​screw includes a limiting cap with a cross-sectional area larger than that of the column at the top of the column. The rear wall of the front panel has a screw hole. The column includes a limiting section and a threaded section. The outer diameter of the threaded section is smaller than that of the limiting section and the threaded section is far away from the limiting cap. A washer is also provided on the outside of the screw hole. A through hole is formed in the middle of the washer for the threaded section to pass through. After the threaded section passes through the washer, it connects to the screw hole. The inner end of the limiting section abuts against the limiting washer in the through hole of the washer.

[0021] With the above structure, the folding drawer of this utility model has a simple structure and is easy and quick to assemble or disassemble. It can greatly reduce the packaging and transportation volume of the drawer and reduce costs. The back frame, side frame and bottom frame of the drawer can be made of metal wire frame, making the whole lighter, with fewer parts, and simpler to assemble. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a semi-disassembled structural diagram of the present invention;

[0024] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 4 for Figure 2 A magnified view of a section at point B (in decomposed form);

[0026] Figure 5 This is a schematic diagram of the bottom structure of the present invention after the bottom frame and the three side frames are combined;

[0027] Figure 6 for Figure 5 A magnified view of a section at point C (showing the caster);

[0028] Figure 7 for Figure 6 A schematic diagram of the exploded structure of the casters in the picture;

[0029] Figure 8 This is a structural diagram illustrating the installation steps of the bottom frame and the three side frames in this utility model.

[0030] Figure 9 for Figure 8 A schematic diagram of the connection steps for the side rod connection structure at point D;

[0031] Figure 10 for Figure 8 A magnified view of a section at point E in the middle.

[0032] Label Explanation:

[0033] 1. Front panel; 11. Connecting hole; 12. First screw; 13. Screw hole;

[0034] 2. Rear frame; 21. Rear frame side; 22, 33. Longitudinal inner bars; 23. Rear frame side bar;

[0035] 231 Socket section; 3 Side frames; 31 Rear side of side frame; 32 Front side of side frame;

[0036] 321, 431 Positioning holes; 34 Upper side of side frame; 4 Bottom frame; 41 Rear side of bottom frame;

[0037] 42. Side of bottom frame; 43. Front side of bottom frame; 44. Inner longitudinal bar of bottom frame; 45. Inner transverse bar of bottom frame;

[0038] 5. Overlapping parts; 51. C-rings; 52. Baffles; 6. Casters;

[0039] 61 Connecting piece; 610 Slot; 611 Right-angled edge; 612 Second mounting hole;

[0040] 613 Second screw; 614 Extension edge; 62 Support bracket; 621 Mounting plate;

[0041] 6211 Side plate; 6212 First mounting hole; 63 Wheel; 7 Connecting hook;

[0042] 8. Clip-on screws; 81. Post body; 811. Limiting section; 812. Threaded section;

[0043] 82 Limiting cap; 83 Gasket; 831 Perforation. Detailed Implementation

[0044] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0045] Combination Figures 1 to 10 As shown, this utility model discloses a foldable drawer, including a front panel 1, a rear frame 2, two side frames 3, and a bottom frame 4. To reduce the drawer's weight and simplify its structure, the rear frame 2, side frames 3, and bottom frame 4 are each formed by rectangular metal wire frames. The front panel 1 can be flat. In this embodiment, the rear frame 2, side frames 3, and bottom frame 4 can be enclosed by iron wire to form rectangular frames, and each frame contains multiple internal rods arranged in a grid pattern.

[0046] To facilitate drawer assembly and allow for compact storage after disassembly or before assembly, in this invention, the bottom edges of the rear frame 2 and the two side frames 3 are hinged to the rear and side edges of the base frame 4 (which can be defined as the rear side edge 41 and side edge 42 of the base frame) via connecting members 5. Each side frame 3 has a connecting hook 7 on its rear side edge 31 adjacent to the two sides of the rear frame 2. The side frame 3 is positioned on both sides of the rear frame 2 via the connecting hook 7. During assembly, the two side frames 3 and the rear frame 2 stand upright on the base frame 4. The front side edge 32 of the side frame 3 facing the front panel 1 and the front side edge 43 of the base frame 4 facing the front panel 1 are flattened at least once in the rod to form positioning holes 321 and 431, respectively. The positioning holes 321 and 431 are locked to the front panel 1 by a first screw 12. On the rear wall of the front panel 1, there are connection holes 11 corresponding to each positioning hole 321, 431, into which the first screw 12 can be inserted for locking. The front panel 1, the two side frames 3 and the rear frame 2 enclose the bottom frame 4 to form a storage space.

[0047] Furthermore, to facilitate the sliding of the drawer, the bottom surface of the base frame 4 is connected to multiple casters 6. Each caster 6 includes a connecting piece 61, a support frame 62, and a wheel 63. The connecting piece 61 is fixed to the frame of the base frame 4, and the wheel 63 is rotatably connected to the bottom of the support frame 62. The top of the support frame 62 has a mounting piece 621. One end of the bottom surface of the connecting piece 61 is provided with a slot 610 into which one end of the mounting piece 621 can be inserted. After the mounting piece 621 is inserted into the slot 610, it is fixed to the bottom of the connecting piece 61 by a second screw 613.

[0048] In this embodiment, at least two rows of caster sets are connected to the bottom of the base frame 4, with two casters 6 in each row, thereby allowing the casters 4 to better support the base frame 4. The base frame 4 has multiple longitudinally arranged and parallel inner rods 44. The connecting piece 61 includes extended sides 614 that are curled upwards on both sides of a square piece and can hook onto two adjacent inner rods of the base frame's longitudinal inner rods 44 (e.g., ...). Figure 3 As shown, the two extended sides 610 of the connecting piece 61 can be hooked onto the two adjacent longitudinal inner rods 41 of the bottom frame. After being positioned on the longitudinal rods 41 of the bottom frame using the extended sides 610, it is then welded to the longitudinal inner rods 41 of the bottom frame for fixation. The slot 610 can be formed by providing a right-angled piece 611 at the bottom of the connecting piece 61. The right-angled piece 611 extends downward from the bottom surface of the connecting piece 61 to form a vertical section and then extends vertically to one side to form a horizontal piece (not shown in the figure). One end of the mounting piece 621 is inserted horizontally between the horizontal piece and the connecting piece 61 to form the slot 610 and then abuts against the vertical section, thereby positioning one side of the support frame 62. Furthermore, the support frame 62 may include side plates 6211 extending downward from both sides of a mounting plate 621. A wheel 63 is connected to the bottom between the two side plates 6211. One end of the mounting plate 621 has a first mounting hole 6212, and a corresponding second mounting hole 612 is provided in the connecting plate 61. A second screw 612 passes through the first mounting hole 6212 and the second mounting hole 612 in sequence for fixing. Figure 6 , Figure 7 As shown, when installing the caster 6, insert one end of the mounting plate 621 in the support bracket 62 into the slot 610 for positioning, and then use the second screw 612 to pass through the first mounting hole 6212 and the second mounting hole 612 in sequence to fix it. Only one locking step is needed, making the installation simpler and faster.

[0049] For the overlapping member 5, the overlapping member 5 may include an upper section and a lower section. In this embodiment, the upper section forms a C-shaped buckle 51, and the lower end extends outward from the open end of the C-shaped buckle 51 to form two baffles 52. The bottom edges of the rear frame 2 and the two side frames 3 are inserted into the C-shaped buckle 51. The rear side and the two side sides of the bottom frame 4 are located below the C-shaped buckle 51 and between the two baffles 52. The two baffles 52 can stop the rear side and the two side sides of the bottom frame 4, preventing the two stacked rod products from shifting. Of course, the structure of the two baffles 52 can also be replaced with the structure of the C-shaped buckle, without affecting whether the bottom edges of the rear frame 2 and the two side frames 3 can stand upright or be tucked against the side of the bottom frame. Further, as Figure 1 or Figure 8As shown, the rear frame, side frames, and bottom frame have multiple internal rods arranged in a grid pattern, and when the rear frame 2 and side frames 3 stand on the bottom frame 4, they have vertical longitudinal internal rods (33, 22) perpendicular to the bottom edge of the rear frame 2 and the two side frames 3, as well as the side edge of the bottom frame. This allows the overlapping piece 5 to be fastened to one side of the longitudinal internal rods 33, 22, forming a stop and limiting the movement. In addition, the bottom frame 4 has at least two horizontal inner rods 45 perpendicular to the longitudinally arranged vertical inner rods 44. The overlapping piece 5 can be fastened to one side of the longitudinal internal rods 33, 22, and can also be located on one side of the horizontal inner rods 45, forming a stop, further limiting the movement of the overlapping piece 5. This prevents the rear frame 2 and the two side frames 3 from easily shifting or swaying when connected to the bottom frame 4.

[0050] In this embodiment, the connecting hook 7 is located at the top of the rear side of the side frame 3. The connecting hook 7 is located at the tail end of the upper side of the side frame 3 (upper side of the side frame 34). The side edges of the rear frame 2 on both sides form rear frame side rods 23. The connecting hook 7 extends forward from the tail of the upper side of the side frame 34 and wraps around to form a hook that can be hooked at the top corner of the rear frame side rod 23. Figure 9 As shown, further, a sleeve section 231 with a smaller outer diameter can be formed in the rod body near the upper end of the rear frame side rod 23 by flattening or cutting the rod body. The connecting hook 7 can first be sleeved on the sleeve section 231 to facilitate hooking, and then move upward on the rod body of the rear frame side rod 23 to achieve hooking and locking, thereby facilitating hooking operation.

[0051] When in use, the folding drawer of this utility model can be movably installed under furniture, such as a bed or sofa. A side support rod (not shown in the figure) is provided on the side of the furniture, and at least one hanging hole is provided on the side support rod. A locking screw 8 is provided on the rear wall of the front panel 1, which can be inserted into the hanging hole and then limited to a specific position. The locking screw 8 limits the front panel to the hanging hole and prevents it from moving outward. The hanging hole can be gourd-shaped. In this embodiment, for example... Figure 4As shown, the snap-fit ​​screw 8 includes a limiting cap 82 with a cross-sectional area larger than that of the column portion 81 formed on the top of the column portion 81. The rear wall surface of the front panel 1 has a screw hole 13. The column portion 81 includes a limiting section 811 and a threaded section 812. The outer diameter of the threaded section 812 is smaller than the outer diameter of the limiting section 811 and the threaded section 812 is far away from the limiting cap 82. A washer 83 is also provided on the outside of the screw hole 13. A through hole 831 is formed in the middle of the washer 83, through which the threaded section 812 can pass. After the threaded section 812 passes through the washer 83, it connects to the screw hole 13. The inner end of the limiting section 811 abuts against the through hole 831 of the washer 83 and presses against the limiting washer 83. When it is necessary to hook and position the drawer in the furniture, insert the snap-fit ​​screw 8 on the back side of the front panel 1 into the corresponding hook hole. The limiting segment 811 in the snap-fit ​​screw 8 is limited in the hook hole, so that the front panel 1 is connected to the side support rod on the side of the furniture and is not pushed outward. The drawer can be positioned in the bed frame or sofa. The structure is simple and easy to use.

[0052] The folding drawer of this utility model, when installed and disassembled, combines... Figure 8 As shown, the front panel 1, rear frame 2, side frames 3, and bottom frame 4 can be independent of each other. The front panel is an independent panel, and the other frames can be disassembled and stacked independently, or the rear and side frames can be folded onto the bottom frame. In use, they can be simply unfolded and positioned upright (positioned via connecting hooks 7 and assisted by overlapping parts 5), forming three enclosing sides on the bottom frame 4. This is then installed onto the back of the front panel 1 to form a drawer. Casters 6 can be quickly installed later. The system has few parts and the operation is simple and quick. Conversely, disassembly and assembly can also be completed simply by using a screwdriver or Allen wrench to disassemble the front panel 1.

[0053] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A foldable drawer, characterized in that: It includes a front panel, a rear frame, two side frames and a bottom frame, with the rear frame, side frames and bottom frame each forming a rectangular metal wire frame; The bottom edges of the rear frame and the two side frames are respectively hinged to the rear side and the two side sides of the bottom frame through the lap joint. Each side frame has a connecting hook on the rear side of the two side frames adjacent to the rear frame. The side frames are positioned on both sides of the rear frame by the connecting hook. The two side frames and the rear frame stand on the bottom frame respectively during assembly. The front side of the side frame facing the front panel and the front side of the bottom frame facing the front panel in the side frame are respectively flattened and a positioning hole is formed in at least one of the rods. The positioning hole is connected to the front panel by a first screw. The front panel, the two side frames and the rear frame surround the bottom frame to form a storage space. The bottom of the base frame is connected to multiple casters. Each caster includes a connecting plate, a support frame, and a wheel. The connecting plate is fixed to the base frame. The wheel is rotatably connected to the bottom of the support frame. The top of the support frame has a mounting plate. One end of the bottom surface of the connecting plate has a slot into which one end of the mounting plate can be inserted. After the mounting plate is inserted into the slot, it is fixed to the bottom of the connecting plate by a second screw.

2. A foldable drawer as described in claim 1, characterized in that: The bottom frame has multiple longitudinal inner rods arranged in parallel. The connecting piece includes two sides of the square piece that are curled upwards and can be hooked onto two adjacent longitudinal inner rods. The two extended sides of the connecting piece are hooked onto two adjacent longitudinal inner rods and fixed to the longitudinal inner rods.

3. A foldable drawer as described in claim 1, characterized in that: The slot is formed by a right-angled piece at the bottom of the connecting piece. The right-angled piece extends downward from the bottom of the connecting piece to form a vertical section, and then extends vertically to one side to form a horizontal piece. The mounting piece is inserted horizontally between the horizontal piece and the connecting piece to form a slot and then abuts against the vertical section.

4. A foldable drawer as described in claim 1 or 2, characterized in that: The bottom of the frame is connected to at least two rows of caster sets, each row of caster sets has two casters. The support frame includes side plates extending downward from both sides of a mounting plate. The wheels are connected to the bottom between the two side plates. One end of the mounting plate has a first mounting hole, and the connecting plate has a corresponding second mounting hole. The second screw passes through the first mounting hole and the second mounting hole in sequence for fixing.

5. A foldable drawer as described in claim 1, characterized in that: The connector consists of an upper section and a lower section. The upper section forms a C-shaped buckle, and the lower end extends outward from the opening of the C-shaped buckle to form two baffles. The bottom edges of the rear frame and the two side frames are inserted into the C-shaped buckle. The rear side and the two side edges of the bottom frame are located below the C-shaped buckle and between the two baffles.

6. A foldable drawer as described in claim 1, characterized in that: The connecting hook is located at the top of the rear side of the side frame. The connecting hook is located at the tail end of the upper side of the side frame in the side frame. The sides of the rear frame form the rear frame side rods. The connecting hook extends forward from the tail end of the upper side of the side frame and wraps around to form a hook that can be hooked at the top corner of the rear frame side rod.

7. A foldable drawer as described in claim 6, characterized in that: In the pole body located near the upper end of the side bar of the rear frame, a sleeve section with a smaller outer diameter is formed by flattening or cutting the pole body. After the connecting hook is sleeved on the sleeve section, it moves upward and is hooked and locked on the side bar of the rear frame.

8. The foldable drawer of claim 1 or 5, wherein: The rear frame, side frames, and bottom frame are each enclosed by iron wire to form a rectangular frame. Each frame has multiple internal rods arranged in a grid pattern. When the rear frame and side frames stand on the bottom frame, the longitudinal internal rods are perpendicular to the bottom edge of the rear frame and the two side frames, as well as the side edge of the bottom frame. The overlapping parts are fastened to one side of the longitudinal internal rods. The bottom frame has multiple longitudinal and parallel bottom frame internal rods. The bottom frame also has at least two bottom frame horizontal internal rods that are perpendicular to the multiple bottom frame longitudinal internal rods. The overlapping parts are fastened to one side of the longitudinal internal rods and are located on one side of the bottom frame horizontal internal rods.

9. The foldable drawer of claim 1, wherein: The folding drawer is located at the bottom of the furniture. The side of the furniture has a side support rod with at least one hanging hole. The front panel is flat, and the back wall of the front panel has a locking screw that can be inserted into the hanging hole and then stopped. The locking screw is stopped in the hanging hole to prevent the front panel from moving outward.

10. A foldable drawer as claimed in claim 9, characterized in that: The hanging hole is gourd-shaped. The snap-fit ​​screw includes a limiting cap with a cross-sectional area larger than that of the column at the top of the column. The rear wall of the front panel has a screw hole. The column includes a limiting section and a threaded section. The outer diameter of the threaded section is smaller than that of the limiting section and the threaded section is far away from the limiting cap. A washer is also provided on the outside of the screw hole. A through hole is formed in the middle of the washer for the threaded section to pass through. After the threaded section passes through the washer, it connects to the screw hole. The inner end of the limiting section abuts against the limiting washer in the through hole of the washer.

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