A hidden disassembly and assembly system for furniture cabinets

Abstract

A hidden disassembly and assembly system for furniture cabinets, comprising a furniture panel I and a furniture panel II, wherein the furniture panel I is provided with a hook head self-tapping screw, the side end of the furniture panel II is provided with a screw hook head moving groove, an expansion seat hole is provided at a position tangent to the upper part of the screw hook head moving groove, an expansion seat is provided in the expansion seat hole, and a pre-expansion inlet of the expansion seat corresponds to the screw hook head moving groove. By using the present invention, the surface of the furniture cabinet can be free of any disassembly and assembly holes and other traces, and flexible, simple and quick assembly and disassembly can be achieved, with high efficiency and low use cost.

Description

Technical Field

[0001] The invention relates to a furniture cabinet disassembly and assembly system, and in particular to a furniture cabinet hidden disassembly and assembly system. Background Art

[0002] The existing furniture cabinets are usually assembled and connected with traditional two-in-one or three-in-one disassembly parts, which have the following main disadvantages: 1. After the furniture is assembled, there are disassembly holes on the board surface, which affects the appearance; 2. The use efficiency is low; 3. It is not flexible enough, and the assembly in a narrow space is limited; 4. The use cost is high. Although some hidden disassembly parts have appeared on the market, they have not completely solved the above disadvantages. Some have complex structures and high use costs, and some are even non-disassembly. Once the board is installed incorrectly, it will cause the board to be scrapped. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a hidden disassembly system for furniture cabinets which has no disassembly holes or other traces on the surface after the furniture is assembled, and is flexible and quick to assemble and disassemble, and has a low cost of use.

[0004] The technical solution adopted by the present invention to solve its technical problems is a hidden disassembly and assembly system of a furniture cabinet, comprising a furniture panel I and a furniture panel II, wherein the furniture panel I is provided with a hook head self-tapping screw, a screw hook head moving groove is provided at the lower part of the side end of the furniture panel II, an expansion seat hole is provided at a position tangent to the upper part of the screw hook head moving groove, an expansion seat is provided in the expansion seat hole, and a pre-expansion inlet of the expansion seat corresponds to the screw hook head moving groove.

[0005] Furthermore, the expansion seat is a C-shaped tubular structure, including a front seat and a rear seat, the outer side of the front seat is provided with a pre-expansion wedging tooth, the lower part is provided with a pre-expansion introduction port and a positioning edge, and both sides are provided with inwardly arc-shaped convex spring pieces, and the arc convex part of the inwardly arc-shaped convex spring piece is provided with an anti-retreat tooth I, which is provided with a wedging tooth I outwardly, and the rear lower part of the front seat is provided with a beveled edge or arc-edge tension and expansion introduction port, and the end of the front seat is provided with an inwardly foldable anti-rebound expansion block, and the rear seat is an eight-shaped trumpet mouth, and the eight-shaped trumpet mouth is provided with an expandable spring piece, the outside of the expandable spring piece is provided with a wedging tooth II, and the inner wall is provided with an anti-retreat tooth II.

[0006] Furthermore, the expansion seat is a columnar structure with arc-shaped side surfaces, a tension and expansion inlet is provided at the lower part, and self-tapping screw fixing holes are provided on both sides.

[0007] Furthermore, the rear end of the screw hook head moving slot is a through slot structure.

[0008] Furthermore, the hook head self-powering screw comprises a hook head, a screw rod and a thread which are connected in sequence.

[0009] By utilizing the present invention, the furniture cabinet surface can be free of any disassembly holes and other traces, and flexible, simple and quick assembly and disassembly can be achieved with high efficiency and low use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0011] Figure 2 for Figure 1 A schematic diagram showing a hook-head self-tapping screw in Embodiment 1 being screwed into a furniture panel Ⅰ;

[0012] Figure 3 for Figure 1 A schematic diagram of the side end slotting and punching of the furniture panel II in the embodiment 1 shown;

[0013] Figure 4 for Figure 3 A side view of the furniture panel II shown in FIG.

[0014] Figure 5 for Figure 1 A schematic diagram of the structure of the expansion seat in the illustrated embodiment 1;

[0015] Figure 6 for Figure 1 A top view of the expansion seat in the illustrated embodiment 1;

[0016] Figure 7 for Figure 1 A schematic diagram of the front end of the expansion seat in the illustrated embodiment 1;

[0017] Figure 8 for Figure 1 A schematic diagram of the rear end of the expansion seat in the illustrated embodiment 1;

[0018] Fig. 9 This is a schematic diagram of the structure of the expansion seat in Example 2 of the present invention;

[0019] Fig.10 Schematic diagram of the slotting and milling of the furniture panel II in Example 2 of the present invention.

[0020] In the figure: 1. Furniture panel I, 2. Furniture panel II, 2-1. Screw hook moving groove, 2-2. Expansion seat hole, 3. Hook self-tapping screw, 3-1. Hook, 3-2. Screw, 3-3. Thread, 4. Expansion seat, 41. Front seat, 42. Rear seat, 4-1. Pre-expansion introduction port, 4-2. Pre-expansion wedge-in teeth, 4-3. Positioning edge, 4-4. Inward arc-shaped protruding spring piece, 4-5. Anti-retraction tooth I, 4-6. Wedge-in tooth I, 4-7. Bevel or arc-edge tension and expansion introduction port, 4-8. Anti-rebound expansion block that can be folded inward, 4-9. Figure-eight flared mouth, 4-10. Expandable spring piece, 4-11. Wedge-in tooth II, 4-12. Anti-retraction tooth II, 4′. Expansion seat, 4-1′. Tension and expansion introduction port, 4-2′. Self-tapping screw fixing hole. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Example 1

[0023] See attached Figure 1-8 This embodiment includes a furniture panel I1 and a furniture panel II2, wherein the furniture panel I1 is provided with a hook head self-tapping screw 3, and a screw hook head moving groove 2-1 is provided at the lower side end of the furniture panel II2, and an expansion seat hole 2-2 is provided at a position tangent to the upper side of the screw hook head moving groove 2-1, and an expansion seat 4 is provided in the expansion seat hole 2-2, and a pre-expansion inlet 4-1 of the expansion seat 4 is opposite to the screw hook head moving groove 2-1.

[0024] The expansion seat 4 is a C-shaped tubular structure, including a front seat 41 and a rear seat 42. The outer side of the front seat 41 is provided with a pre-expansion wedging tooth 4-2, and the lower part thereof is provided with a pre-expansion introduction port 4-1 and a positioning edge 4-3. Both sides thereof are provided with inwardly arcuate convex spring pieces 4-4, and the arc convex part of the inwardly arcuate convex spring pieces 4-4 is provided with an anti-retraction tooth I 4-5, and it is provided with a wedging tooth I 4-6 outwardly. The rear lower part of the front seat is provided with a beveled edge or arc-edge tension expansion introduction port 4-7, and the end thereof is provided with an inwardly foldable anti-rebound expansion block 4-8, and the rear seat 42 is an eight-shaped trumpet mouth 4-9, and the eight-shaped trumpet mouth 4-9 is provided with an expandable spring piece 4-10, and the outside of the expandable spring piece 4-10 is provided with a wedging tooth II 4-11 to further tighten and clamp the plate, and the inner wall is provided with an anti-retraction tooth II 4-12 to prevent the hook head self-tapping screw 3 from withdrawing.

[0025] The rear end of the screw hook head moving groove 2-1 is provided with a through groove, and the front portion is provided with a plurality of inseparable grooves.

[0026] The hook head automatic screw 3 comprises a hook head 3-1, a screw rod 3-2 and a thread 3-3 which are connected in sequence.

[0027] When assembling furniture panel Ⅰ1 and furniture panel Ⅱ2, align the notch of the screw hook head moving slot 2-1 at the rear end of furniture panel Ⅱ2 with the screw rod 3-2 and hook head 3-1 of the hook head automatic screw 3 on the surface of furniture panel Ⅰ1, and slide the screw rod 3-2 and hook head 3-1 to below the pre-expansion introduction port 4-1 of the C-type tubular expansion seat 4, and apply force to the corresponding position above the furniture panel Ⅱ2. First, the screw rod 3-2 of the hook head self-tapping screw 3 enters the C-type tubular expansion seat. The pre-expansion inlet 4-1 of the expansion seat 4 causes the C-shaped tubular expansion seat 4 to expand initially, and the pre-expansion wedging teeth 4-2 of its outer ring wedge into and tighten the hole wall, and then the hook head 3-1 of the hook head self-tapping screw 3 runs along the bevel or arc edge of the C-shaped expansion seat 4 to pull the bevel or arc edge of the expansion inlet 4-7, and the running process is also a process of gradual expansion and tightening. When it runs to the end of the bevel or arc edge, it pushes and folds the anti-rebound expansion block 4-8 ​​inward, so that it turns inward to cushion the hook head 3- 1, so that the hook head 3-1 cannot rebound and withdraw after it falls into place, and at the same time, the hook head 3-1 pushes into the eight-shaped bell mouth 4-9 provided under the dovetail-shaped expandable spring piece 4-10 at the rear end of the C-shaped tubular expansion seat 4, so that the expandable spring piece 4-10 gradually expands outward, and the anti-retraction teeth II 4-12 provided inside can prevent the hook head 3-1 from withdrawing, and the wedging teeth II 4-11 provided outside wedge into the hole wall to further tighten the plate. At the same time, the screw 3-2 of the hook head self-tapping screw 3 opens the C The inwardly arc-shaped protruding spring piece 4-4 of the tubular expansion seat 4 causes its external wedging tooth Ⅰ4-6 to wedge into the hole wall, and the anti-retraction tooth Ⅰ4-5 provided at the inwardly arc-shaped protrusion can prevent the screw 3-2 from withdrawing, and further firmly clamp the furniture panel Ⅱ2, so as to achieve a simple and quick tight connection without any exposed holes and other traces on the surface of the furniture panel Ⅰ1 and the furniture panel Ⅱ2. If the furniture panel Ⅰ1 and the furniture panel Ⅱ2 need to be disassembled, they can be disassembled by applying force in the reverse direction.

[0028] Example 2

[0029] The difference between this embodiment and the first embodiment is that the expansion seat 4' is a columnar structure with arc-shaped sides, a tension and expansion inlet 4-1' is provided at the bottom, self-tapping screw fixing holes 4-2' are provided on both sides, and the shape of the opening on the furniture panel II2 corresponds to the expansion seat 4'. The rest is the same as the first embodiment.

[0030] See attached Figure 9-10The expansion seat 4' is fixed in the corresponding expansion seat hole 2-2 on the furniture panel Ⅱ2 by self-tapping screws through the self-tapping screw fixing holes 4-2' on both sides thereof, and the notch of the screw hook head moving slot 2-1 at the rear end of the furniture panel Ⅱ2 is aligned with the screw rod 3-2 and hook head 3-1 of the hook head self-tapping screw 3 exposed on the surface of the furniture panel Ⅰ1, so that the screw rod 3-2 and hook head 3-1 slide to the position of the expansion inlet 4-1' of the expansion seat 4', and force is applied at the corresponding position above the furniture panel Ⅱ2, and the force generated by the expansion seat 4' during the placement of the screw rod 3-2 and the hook head 3-1 is used to expand and tighten the furniture panel Ⅰ1 and the furniture panel Ⅱ2, so as to achieve a simple and fast tight connection without any exposed holes and other traces on the surface of the furniture panel Ⅰ1 and the furniture panel Ⅱ2. If the furniture panel Ⅰ1 and the furniture panel Ⅱ2 need to be disassembled, just apply force in the opposite direction.

[0031] This embodiment has a simple structure and can be used to assemble and disassemble furniture in a narrow space. It is easy to operate, efficient, and has a low cost. There will be no connection holes or traces on the surface of the assembled furniture, making it neat and beautiful.

[0032] Those skilled in the art may make various modifications and variations to the present invention. If these modifications and variations are within the scope of the claims of the present invention and their equivalent technologies, these modifications and variations are still within the scope of protection of the patent of the present invention.

[0033] The contents not described in detail in the specification are prior art known to those skilled in the art.

Claims

1. A hidden disassembly and assembly system for a furniture cabinet, comprising a furniture panel I and a furniture panel II, characterized in that: The furniture panel I is provided with a hook head self-tapping screw, the side end of the furniture panel II is provided with a screw hook head moving groove, and an expansion seat hole is provided at a position tangent to the upper part of the screw hook head moving groove, and an expansion seat is provided in the expansion seat hole, and the pre-expansion introduction port of the expansion seat corresponds to the screw hook head moving groove; The expansion seat is a C-shaped tubular structure, including a front seat and a rear seat, the front seat is provided with a pre-expansion wedging tooth on the outside, a pre-expansion introduction port and a positioning edge at the bottom, and inwardly arc-shaped convex spring pieces on both sides, and an anti-retraction tooth I is provided at the arc convex part of the inwardly arc-shaped convex spring piece, and a wedging tooth I is provided outwardly, and a beveled edge or arc-edge tension expansion introduction port is provided at the rear lower part of the front seat, and an anti-rebound expansion block that can be folded inward is provided at the end thereof, and the rear seat is an eight-shaped trumpet mouth, and an expandable spring piece is provided on the eight-shaped trumpet mouth, and a wedging tooth II is provided on the outside of the expandable spring piece, and an anti-retraction tooth II is provided on the inner wall; The rear end of the screw hook head moving slot is a through slot structure; The hook head self-powering screw comprises a hook head, a screw rod and a thread which are connected in sequence.

2. The hidden disassembly and assembly system for furniture cabinets according to claim 1, characterized in that: The expansion seat is a columnar structure with arc-shaped side surfaces on both sides, a tension and expansion inlet is arranged at the lower part thereof, and self-tapping screw fixing holes are arranged on both sides thereof.

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