Flush-surface clamping frame body for furniture

Abstract

The utility model belongs to the technical field of furniture structures, and particularly relates to a clamping frame body with a flush surface for furniture. The utility model provides a surface-flush clamping frame body for furniture, which structurally comprises a long-edge square tube, a wide-edge square tube, a long-axis square tube, a short-axis square tube, a wall-thickness clamping groove, a top and bottom plate notch, an L-shaped two-sided slot and a U-shaped three-sided slot, so that 1, the wall-thickness clamping groove is formed by properly setting the depth of the slot; the upper surface and the lower surface of the frame body can be always flush without a supporting leg structure; clamping structures are arranged between all the adjacent square pipes, the square pipes are difficult to separate in the transverse direction, and finally the structural strength of the frame body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of furniture structures, and particularly relates to a snap-fit ​​frame for furniture with a flush surface. Background Art

[0002] Common furniture frames mainly include bed frames and sofa frames. On the other hand, in order to reduce the difficulty of storage and transportation of the frames, they are generally split.

[0003] The existing bed frame and sofa frame structure mainly comprises a frame and legs. Among them, in the steel structure bed frame and sofa frame, the frame and leg structures are generally all kinds of square tubes.

[0004] For example, a Chinese utility model patent with authorization announcement number CN212815421U and authorization announcement date 2021.03.30 discloses a new hardware bed frame, including a bed beam unit and a support unit. The bed beam unit includes a transverse side beam, a longitudinal side beam and a flat beam. The support unit includes side feet and support feet. The two adjacent surfaces on the upper ends of the side feet are welded with reverse connecting plates, which are respectively inserted into the transverse side beam and the longitudinal side beam tubes and fixed by screws. Multiple groups of supports for carrying flat beams are evenly welded on the inner side of the longitudinal side beam. A raised buckle is provided in the middle of the support, and bayonet sockets matching the buckle are provided at both ends of the flat beam.

[0005] The hardware bed frame in this utility model patent has the advantages of simple structure, safe and reliable structure, reducing the inconvenience and tediousness of manual installation, and the product has beautiful and simple appearance, is easy to disassemble and transport, reduces packaging volume, and reduces transportation costs.

[0006] However, in actual use, the hardware bed frame still has at least the following two shortcomings, which are also the technical problems to be solved by the utility model, namely:

[0007] First, there is no direct fixing between the transverse side beam and the longitudinal side beam, so the aesthetic and comfortable effect of the flush upper surface can only be achieved by pre-aligned connecting pieces, the strength of which is relatively low. As long as the connecting piece is slightly bent, the upper surfaces of the transverse side beam and the longitudinal side beam will no longer be flush;

[0008] Secondly, since there is no direct fixing between the transverse side beams and the longitudinal side beams, the structural stability of the bed beam unit is only guaranteed by the connecting piece. Once the connecting piece is separated from the side feet, looseness occurs between the transverse side beams and the longitudinal side beams, which greatly reduces the structural stability of the hardware bed frame.

[0009] Therefore, in summary, there is an urgent need for a new frame structure that is fixed and installed by itself, and has the advantages of a flat upper surface and a strong connection structure. At this time, the leg structure can further strengthen the structural strength of the frame, rather than being the sole guarantee of the latter's structural strength. Utility Model Content

[0010] The utility model provides a snap-fit ​​frame for furniture with a flush surface, and the structural components thereof include long-side square tubes, wide-side square tubes, long-axis square tubes, short-axis square tubes, wall thickness snap-fit ​​grooves, top and bottom plate cutouts, L-shaped two-sided grooves, and U-shaped three-sided grooves, so that: 1. the wall thickness snap-fit ​​grooves can make the upper and lower surfaces of the frame always flush by appropriately setting the groove depths thereof, without the need for supporting leg structures; 2. all adjacent square tubes have snap-fit ​​structures between them, making them difficult to separate laterally, thereby ultimately improving the structural strength of the frame.

[0011] The technical solution adopted by the utility model to solve the above-mentioned problems is: a snap-fit ​​frame for furniture with a flush surface, the structure comprising long-side square tubes, wide-side square tubes, long-axis square tubes, and short-axis square tubes for forming a rectangular frame and a cross-shaped central axis, and also comprising wall thickness snap-fitting grooves respectively arranged at both ends of all square tubes and used for snapping with each other, top and bottom plate cutouts arranged between the wall thickness snap-fitting grooves and the end faces of the square tubes, L-shaped two-sided grooves arranged on the long-side square tubes and the wide-side square tubes and used for snapping with the wall thickness snap-fitting grooves on the short-axis square tubes and the wall thickness snap-fitting grooves on the long-axis square tubes, and U-shaped three-sided grooves respectively arranged on the long-axis square tubes and the short-axis square tubes and used for snapping with each other.

[0012] A further preferred technical solution is that: a vertical reserved plate is also provided on the L-shaped two-sided groove and / or the U-shaped three-sided groove.

[0013] A further preferred technical solution is that the vertical reserved plate is supported on the inner side surface of the long-axis square tube or the short-axis square tube.

[0014] A further preferred technical solution is that only one wall thickness groove is provided at a single end of the long-axis square tube and the short-axis square tube.

[0015] A further preferred technical solution is that two wall thickness grooves are provided at single ends of the long-side square tube and the wide-side square tube.

[0016] A further preferred technical solution is that the wall thickness clamping grooves on the long-side square tube and the wide-side square tube, which are relatively close to the ends, are arranged on the end surfaces of the long-side square tube and the wide-side square tube.

[0017] A further preferred technical solution is that: the long-side square tube is provided with a first fracture at the grooves on both sides of the L-shape.

[0018] A further preferred technical solution is that the long-axis square tube is provided with a second fracture at the U-shaped three-sided groove.

[0019] A further preferred technical solution is that the vertical dimensions and wall thicknesses of the long-side square tube, wide-side square tube, long-axis square tube and short-axis square tube are all equal.

[0020] A further preferred technical solution is that the slot width of the wall thickness slot is equal to the wall thickness of the square tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the utility model.

[0022] Figure 2 It is a schematic diagram of the positions of the four types of nodes in the utility model.

[0023] Figure 3 It is a schematic diagram of the connection method of the long side square tube and the wide side square tube in the utility model.

[0024] Figure 4 It is a schematic diagram of the connection method of the wide side square tube and the long axis square tube in the utility model.

[0025] Figure 5 It is a schematic diagram of the connection method of the long side square tube and the short axis square tube in the utility model.

[0026] Figure 6 It is a schematic diagram of the connection method of the long-axis square tube and the short-axis square tube in the utility model.

[0027] In the figure, the meanings of the symbols are as follows:

[0028] Long side square tube 11, wide side square tube 12, long axis square tube 13, short axis square tube 14;

[0029] Wall thickness slot 1, top and bottom plate cutouts 2, L-shaped two-sided slots 3, U-shaped three-sided slots 4, vertical reserved plates 5, first fractures 6, and second fractures 7. DETAILED DESCRIPTION

[0030] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0031] As attached Figure 1-6As shown, a snap-fit ​​frame for furniture with a flush surface comprises a long-side square tube 11, a wide-side square tube 12, a long-axis square tube 13, and a short-axis square tube 14 for forming a rectangular frame and a cross-shaped central axis, and also comprises a wall thickness snap-fitting groove 1 respectively arranged at both ends of all the square tubes and used for snapping with each other, a top and bottom plate cutout 2 arranged between the wall thickness snap-fitting groove 1 and the end surface of the square tube, an L-shaped two-sided groove 3 arranged on the long-side square tube 11 and the wide-side square tube 12 and used for snapping with the wall thickness snap-fitting groove 1 on the short-axis square tube 14 and the wall thickness snap-fitting groove 1 on the long-axis square tube 13, and a U-shaped three-sided groove 4 respectively arranged on the long-axis square tube 13 and the short-axis square tube 14 and used for snapping with each other.

[0032] In this embodiment, the outer side surfaces of the long-side square tube 11, the wide-side square tube 12, the long-axis square tube 13 and the short-axis square tube 14 are all rectangular, the length and width of the rectangular outlines of the four are the same, and the materials of the four are all high-strength steel.

[0033] In addition, the words "long axis, short axis" mentioned above mean that the long axis square tube 13 and the short axis square tube 14 are both symmetry axes of the engaging frame, and the length of the former is greater than that of the latter.

[0034] In addition, the wall thickness slot 1 is used to engage with the side plates of the adjacent square tubes. The above-mentioned "four types of nodes" refer to: the end corner node, the wide side center node, the long side center node and the frame center node.

[0035] The end angle node is formed by the wall thickness slot 1 which is staggered in the opening direction, and the details are shown in the attached Figure 3 The central node of the wide side is formed by the wall thickness slot 1 with the opening facing upward and the L-shaped double-sided slot 3 with the opening facing downward. For details, please refer to the attached Figure 4 .

[0036] The center node of the long side is also formed by the wall thickness slot 1 with the opening facing upward and the L-shaped double-sided slot 3 with the opening facing downward. Figure 5 The center node of the frame is formed by the U-shaped three-sided groove 4 with the opening direction staggered up and down, please refer to the attached Figure 6 .

[0037] At this point, the snap-fit ​​frame has the two advantages of having both the upper and lower surfaces flush and internal snap-fit ​​connection. The snap-fit ​​frame is equipped with the commonly used top connecting pieces of the legs, such as: L-shaped connecting pieces (corresponding to the above-mentioned end corner nodes), T-shaped connecting pieces (corresponding to the above-mentioned wide side center nodes, long side center nodes) and cross-shaped connecting pieces (corresponding to the above-mentioned frame center nodes), which can strengthen the above-mentioned surface flushing effect and internal snap-fit ​​fixing effect, instead of only using the commonly used top connecting pieces of the legs to achieve these two effects.

[0038] Finally, the function of the top and bottom plate cutouts 2 is to ensure that the above-mentioned surface flushing effect is achieved, otherwise, for example, the attached Figure 4 As shown, if the top plate on the left side of the wall thickness slot 1 is not cut off, it will press against the lower surface of the top plate of the wide-edge square tube 12, and the upper surfaces of the two square tubes cannot be flush.

[0039] The L-shaped two-sided groove 3 refers to the need to cut an L-shaped steel sheet when forming the groove, and the U-shaped three-sided groove 4 refers to the need to cut a U-shaped steel sheet when forming the groove.

[0040] The L-shaped two-sided groove 3 and / or the U-shaped three-sided groove 4 are also provided with a vertical reserved plate 5 .

[0041] In this embodiment, the distance between the side of the vertical reserved plate 5 and the side of the L-shaped two-sided groove 3 and the U-shaped three-sided groove 4 is equal to the wall thickness of the square tube, which is the maximum width of the vertical reserved plate 5.

[0042] So for example, Figure 4 As shown, at this time, the vertical reserved plate 5 can abut against the inner side of the long-axis square tube 13, while the wide-side square tube 12 abuts against the outer side of the long-axis square tube 13, ensuring that the long-axis square tube 13 is difficult to move left and right, and the former effect is complementary to the latter effect.

[0043] The vertical reserved plate 5 is supported on the inner side surface of the long-axis square tube 13 or the short-axis square tube 14 .

[0044] In this embodiment, the maximum vertical dimension of the vertical reserved plate 5 is to abut against the inner side of the long-axis square tube 13 or the short-axis square tube 14. In other words, at this time, the lower end surface of the vertical reserved plate 5 is flush with the inner bottom surface height of the long-side square tube 11 or the wide-side square tube 12.

[0045] At this time, the L-shaped steel sheet and the U-shaped steel sheet will be "missing a section", that is, leaving the plate size of the vertical reserved plate 5.

[0046] Finally, the left and right auxiliary limiting effects and the vertical auxiliary fixing effect of the vertical reserved plate 5 are independent of each other and can be flexibly selected to be retained.

[0047] Only one wall thickness groove 1 is provided at a single end of the long-axis square tube 13 and the short-axis square tube 14 .

[0048] In this embodiment, the end of the long-axis square tube 13 need not and cannot be exposed at the wide-side square tube 12, and the same is true for the short-axis square tube 14 on the long-side square tube 11. Therefore, only one wall thickness slot 1 is required.

[0049] At this time, the transverse dimension of the L-shaped double-sided groove 3 is smaller than the inner and outer thickness dimensions of the wide-side square tube 12 and the long-side square tube 11. The bottom plate of the long-axis square tube 13 and the short-axis square tube 14 needs to block the bottom notch of the L-shaped double-sided groove 3 to ensure that the corresponding size of the clamping effect is also achieved there, which can further improve the structural strength of the frame.

[0050] As attached Figure 4 As shown, if the distance between the wall thickness slot 1 and the end face on the same side is 1 cm, and the lateral depth of the bottom notch of the L-shaped double-sided slot 3 is 3 cm, then this 2 cm gap is harmful and needs to be avoided.

[0051] Two wall thickness slots 1 are provided at single ends of the long-side square tube 11 and the wide-side square tube 12 .

[0052] In this embodiment, since the long-side square tube 11 and the wide-side square tube 12 form the above-mentioned end corner node, in principle, two pairs of the wall thickness slots 1 can be mutually engaged at the end corners of the engaging frame.

[0053] At this time, the rectangular corners of the engaging frame have small protrusions in the long side direction and the wide side direction. Although it is inconvenient to use, two relatively firm engaging positions can be obtained.

[0054] The wall thickness clamping groove 1 on the long-side square tube 11 and the wide-side square tube 12 , which is relatively close to the end, is arranged on the end surface of the long-side square tube 11 and the wide-side square tube 12 .

[0055] In this embodiment, the improvement scheme of the above-mentioned "small segment protrusion" structure style is as shown in the attached Figure 3 At this time, the two pairs of wall thickness slots 1 are still engaged with each other, but the original "small protrusion" length is reduced to 0, which can ensure that the engaging frame has four flush end corners.

[0056] The long-side square tube 11 is provided with a first break 6 at the L-shaped two-sided groove 3 .

[0057] In this embodiment, the first cutout 6 evenly divides the width of the L-shaped two-sided slot 3. The advantage of this method is that it prevents the long-side square tube 11 from being difficult to store and transport due to its excessive length.

[0058] The long-axis square tube 13 is provided with a second fracture 7 at the U-shaped three-sided groove 4 .

[0059] In this embodiment, the function of the second break 7 is the same as that of the first break 6. When the vertical reserved plate 5 is provided on the U-shaped three-sided groove 4 of the long-axis square tube 13, the second break 7 also divides it equally.

[0060] The vertical dimensions and wall thicknesses of the long-side square tube 11 , the wide-side square tube 12 , the long-axis square tube 13 and the short-axis square tube 14 are all equal.

[0061] In this embodiment, the vertical groove depths of the wall thickness groove 1, the L-shaped two-sided groove 3 and the U-shaped three-sided groove 4 are all half of the vertical dimension of the square tube. The two wall thickness grooves 1 and the wall thickness groove 1 and the latter two are fully engaged, so that the upper and lower surfaces of all square tubes can be flush.

[0062] The slot width of the wall thickness slot 1 is equal to the wall thickness of the square tube.

[0063] In this embodiment, the wall thickness of the square tube is ≥1.0 mm to ensure sufficient supporting strength.

[0064] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. A snap-fit ​​frame for furniture with a flush surface, the structure comprising a long-side square tube (11), a wide-side square tube (12), a long-axis square tube (13), and a short-axis square tube (14) for forming a rectangular frame and a cross-shaped central axis, Features: It also includes wall thickness clamping grooves (1) respectively arranged at both ends of all square tubes and used for mutual clamping between two of them, top and bottom plate cutouts (2) arranged between the wall thickness clamping grooves (1) and the end faces of the square tubes, L-shaped two-sided grooves (3) arranged on the long-side square tubes (11) and the wide-side square tubes (12) and used for respectively clamping the wall thickness clamping grooves (1) on the short-axis square tubes (14) and the wall thickness clamping grooves (1) on the long-axis square tubes (13), and U-shaped three-sided grooves (4) respectively arranged on the long-axis square tubes (13) and the short-axis square tubes (14) and used for mutual clamping.

2. A snap-fit ​​frame for furniture with a flush surface according to claim 1, Features: The L-shaped two-sided groove (3) and / or the U-shaped three-sided groove (4) are also provided with a vertical reserved plate (5).

3. A snap-fit ​​frame for furniture with a flush surface according to claim 2, Features: The vertical reserved plate (5) is supported on the inner side surface of the long-axis square tube (13) or the short-axis square tube (14).

4. A snap-fit ​​frame for furniture with a flush surface according to claim 1, Features: Only one wall thickness clamping groove (1) is provided at a single end of the long-axis square tube (13) and the short-axis square tube (14).

5. The snap-fit ​​frame for furniture with a flush surface according to claim 1, Features: Two wall thickness clamping grooves (1) are provided at single ends of the long-side square tube (11) and the wide-side square tube (12).

6. A snap-fit ​​frame for furniture with a flush surface according to claim 5, Features: The wall thickness clamping groove (1) on the long-side square tube (11) and the wide-side square tube (12) which is relatively close to the end is arranged on the end surface of the long-side square tube (11) and the wide-side square tube (12).

7. The snap-fit ​​frame for furniture with a flush surface according to claim 1, Features: The long-side square tube (11) is provided with a first fracture (6) at the L-shaped two-sided grooves (3).

8. The snap-fit ​​frame for furniture with a flush surface according to claim 1, Features: The long-axis square tube (13) is provided with a second fracture (7) at the U-shaped three-sided groove (4).

9. The snap-fit ​​frame for furniture with a flush surface according to claim 1, Features: The vertical dimensions and wall thicknesses of the long-side square tube (11), the wide-side square tube (12), the long-axis square tube (13) and the short-axis square tube (14) are all equal.

10. A snap-fit ​​frame for furniture with a flush surface according to claim 9, Features: The slot width of the wall thickness slot (1) is equal to the wall thickness of the square tube.

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