Sofa module quick-assembly connecting structure

Abstract

The utility model relates to a sofa module fast-assembly connecting structure which comprises an inserting piece and a sleeve piece, the inserting piece comprises an inserting rod and a mounting plate, the top end of the inserting rod is connected with the mounting plate, a plurality of annular grooves are formed in the outer side of the inserting rod, and a plurality of assembly holes are formed in the mounting plate; the sleeve part comprises a hollow screw rod, a nut and a plastic inner cylinder, the nut is assembled on the outer side of the hollow screw rod in a threaded mode, the plastic inner cylinder is arranged in the hollow screw rod, a through hole matched with the inserting rod is formed in the middle of the plastic inner cylinder, at least one inner protruding ring is arranged in the through hole, and the inner protruding ring can be clamped with the annular groove. The utility model designs a quick mounting device for the modules of furniture, preferably for the connection of the modules of a sofa.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a sofa module quick-install connection structure. Background Art

[0002] The sofas on the market are divided into integrated or modular types. The integrated type uses an integrated frame and the components cannot be disassembled; while the modular type divides the sofa into multiple parts, such as a base, backrest, armrests and other parts, and the modules can be detachably connected.

[0003] There are various ways to connect the modules of various sofa components on the market. For example, the armrests and the base are fixedly connected by bolts, latches and other fixings. The above method is troublesome to install and requires alignment of the holes. In addition, due to the heavy weight of the sofa module, it is troublesome to adjust.

[0004] There is also a method on the market whereby an iron sheet is provided on the sofa module and the iron sheet can be inserted into a hole on the base to quickly install the module. However, in the above method, the iron sheet and the hole are easily misaligned, which increases the installation time. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a sofa module quick-install connection structure in view of the above shortcomings.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A sofa module quick-install connection structure, comprising an insert and a sleeve.

[0008] The insert comprises an insert rod and a mounting plate, the top end of the insert rod is connected to the mounting plate, a plurality of annular grooves are formed on the outer side of the insert rod, and a plurality of assembly holes are formed on the mounting plate;

[0009] The sleeve assembly includes a hollow screw, a nut and a plastic inner tube. The nut is threadedly assembled on the outside of the hollow screw, and the plastic inner tube is arranged in the hollow screw. A through hole cooperating with the insertion rod is opened in the middle of the plastic inner tube, and at least one inner convex ring is arranged in the through hole, and the inner convex ring can be engaged with the ring groove.

[0010] Furthermore, the annular groove includes a first conical surface and a second conical surface recessed toward the inside of the insertion rod, and the slope of the first conical surface is greater than the slope of the second conical surface.

[0011] Furthermore, an insertion section is provided at the bottom end of the insertion rod, the diameter of the insertion section is smaller than the diameter of the insertion rod, and the annular groove is provided on the insertion section.

[0012] Furthermore, the bottom end of the insertion rod is provided with a chamfer.

[0013] Furthermore, the plastic inner cylinder and the hollow screw are interference fit.

[0014] Furthermore, a circle of steps is provided at the top of the plastic inner cylinder, and the outer diameter of the steps is larger than the inner diameter of the hollow screw.

[0015] Furthermore, the bottom end of the plastic inner cylinder is provided with a plurality of notches extending upward.

[0016] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0017] The utility model designs a fast installation device for furniture modules, and is preferably used for connecting sofa modules.

[0018] The rod and the cylinder are connected in a way that they can be pre-installed on the module. The rod and the cylinder are easy to align and are less affected by the insertion angle, so the installation between modules can be completed quickly. After the rod is inserted into the plastic inner cylinder, the two components are clamped and positioned through the cooperation of the ring groove and the inner convex ring. The insertion depth of the rod can be adjusted according to actual needs so that the inner convex ring can clamp the ring grooves at different positions and adjust the installation height (position).

[0019] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the assembly of the insert and the sleeve;

[0021] Figure 2 is an exploded schematic diagram of an insert and a sleeve;

[0022] Figure 3 A partial cross-sectional view of the assembly of the insert and the sleeve;

[0023] Figure 4 It is a structural schematic diagram of the ring groove;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the plastic inner cylinder;

[0025] Figure 6 It is a top view of the plastic inner cylinder.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Insert; 11. Insert rod; 111. Ring groove; 1111. First conical surface; 1112. Second conical surface; 112. Insert section; 113. Third conical surface; 114. Chamfer; 12. Mounting plate; 121. Assembly hole; 2. Sleeve piece; 21. Hollow screw; 22. Nut; 23. Plastic inner tube; 231. Through hole; 232. Inner convex ring; 2321. Fracture; 233. Step; 234. Notch; 3. Decorative piece. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] like Figure 1 As shown, a sofa module quick-install connection structure includes an insert 1 and a sleeve 2.

[0031] The insert 1 includes an insert rod 11 and a mounting plate 12. The top end of the insert rod 11 is connected to the mounting plate 12. A plurality of annular grooves 111 are formed on the outer side of the insert rod 11. A plurality of assembly holes 121 are formed on the mounting plate 12.

[0032] The sleeve member 2 includes a hollow screw 21, a nut 22 and a plastic inner tube 23. The nut 22 is threadedly assembled on the outer side of the hollow screw 21. The plastic inner tube 23 is arranged in the hollow screw 21. A through hole 231 cooperating with the insertion rod 11 is opened in the middle of the plastic inner tube 23. At least one inner convex ring 232 is arranged in the through hole 231, and the inner convex ring 232 can be engaged with the annular groove 111.

[0033] Embodiment 1:

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, it includes an insert 1 and a sleeve 2, which can be installed on various modules of the sofa, for example, the insert 1 can be installed on modules such as the sofa armrest and the sofa backrest, and the sleeve 2 can be installed on the sofa base. The insert 1 and the sleeve 2 can be used to complete the assembly between various modules of the sofa.

[0035] The insert 1 includes an insert rod 11 and a mounting plate 12. The insert rod 11 is in an inverted "L" shape. The top of the insert rod 11 is connected to the mounting plate 12. Both sides of the mounting plate 12 are provided with an assembly hole 121. The mounting plate 12 can be fixed to a sofa armrest, backrest or other module by screws.

[0036] like Figure 4 As shown, an insertion section 112 is provided at the bottom end of the insertion rod 11, and the outer diameter of the insertion section 112 is smaller than the outer diameter of other parts of the insertion rod 11. A plurality of annular grooves 111 are evenly formed on the outer side of the insertion section 112. The annular grooves 111 include a first conical surface 1111 and a second conical surface 1112 that are recessed into the inside of the insertion rod 11. The slope of the first conical surface 1111 is greater than the slope of the second conical surface 1112. This design makes the insertion resistance greater than the upward withdrawal resistance.

[0037] The uppermost annular groove 111 has a conical surface connected to the outer surface of the insertion rod 11, so that its depth is greater than other conical surfaces, forming a third conical surface 113;

[0038] A chamfer 114 is provided at the bottom end of the insertion rod 11 , and the chamfer 114 facilitates the insertion rod 11 to be quickly inserted into the through hole 231 .

[0039] The sleeve member 2 includes a hollow screw 21, a nut 22 and a plastic inner tube 23. The nut 22 and the hollow screw 21 can be threadedly assembled. The hollow screw 21 can be installed on a module such as a sofa base through the nut 22. The outer side of the nut 22 is also covered with a decorative member 3.

[0040] like Figure 5 As shown, the plastic inner cylinder 23 is disposed in the hollow screw 21, and the plastic inner cylinder 23 and the hollow screw 21 are interference fit, the bottom end of the plastic inner cylinder 23 can be chamfered to facilitate the insertion of the plastic inner cylinder 23 into the hollow screw 21, and the outer side of the plastic inner cylinder 23 can be provided with a plurality of hollow grooves to facilitate the installation of the plastic inner cylinder 23;

[0041] A vertical through hole 231 is provided in the plastic inner cylinder 23. The through hole 231 passes through the upper and lower end surfaces of the plastic inner cylinder, and the aperture of the through hole 231 is larger than the outer diameter of the insertion section 112. An inner convex ring 232 is provided in the through hole 231. The number of the inner convex rings 232 can be adjusted according to demand, and the inner convex rings 232 can be inserted into the annular groove 111.

[0042] like Figure 6 As shown, when preparing the plastic inner cylinder 23, in order to improve the molding quality of the inner convex ring 232, a plurality of fractures 2321 are formed on the inner convex ring 232 after molding. The fractures 2321 are not necessary structures and can be omitted according to actual conditions.

[0043] Preferably, a circle of steps 233 is provided at the top of the plastic inner cylinder 23, the outer diameter of the steps 233 is larger than the inner diameter of the hollow screw 21, and the steps 233 are used to limit the depth of the plastic inner cylinder 23 inserted into the hollow screw 21, thus playing a limiting role;

[0044] Preferably, the bottom end of the plastic inner cylinder 23 is provided with a plurality of slots 234 extending upward so that the bottom end of the plastic inner cylinder 23 forms a petal structure. When the plastic inner cylinder 23 is inserted into the hollow screw 21, the bottom end of the plastic inner cylinder 23 will shrink inward to facilitate the insertion of the plastic inner cylinder 23 into the hollow screw 21.

[0045] When in use, align the bottom end of the rod 11 (i.e., the bottom end of the insertion section 112) with the through hole 231, and then insert the rod 11 into the through hole 231. When the modules are assembled, the rod 11 will be inserted into the corresponding depth, and the inner convex ring 232 will be inserted into the corresponding ring groove 111 to complete the assembly. Figure 3 shown.

[0046] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A sofa module quick-install connection structure, comprising an insert (1) and a sleeve (2), characterized in that: The insert (1) comprises an insert rod (11) and a mounting plate (12), the top end of the insert rod (11) is connected to the mounting plate (12), a plurality of annular grooves (111) are formed on the outer side of the insert rod (11), and a plurality of assembly holes (121) are formed on the mounting plate (12); The sleeve member (2) comprises a hollow screw (21), a nut (22) and a plastic inner tube (23); the nut (22) is threadedly assembled on the outer side of the hollow screw (21); the plastic inner tube (23) is arranged in the hollow screw (21); a through hole (231) cooperating with the insertion rod (11) is opened in the middle of the plastic inner tube (23); at least one inner convex ring (232) is arranged in the through hole (231); and the inner convex ring (232) can be engaged with the annular groove (111).

2. The sofa module quick-install connection structure according to claim 1, characterized in that: The annular groove (111) comprises a first conical surface (1111) and a second conical surface (1112) which are recessed into the interior of the insertion rod (11); the slope of the first conical surface (1111) is greater than the slope of the second conical surface (1112).

3. The sofa module quick-install connection structure according to claim 1, characterized in that: An insertion section (112) is provided at the bottom end of the insertion rod (11), the diameter of the insertion section (112) is smaller than the diameter of the insertion rod (11), and the annular groove (111) is provided on the insertion section (112).

4. The sofa module quick-install connection structure according to claim 1, characterized in that: The bottom end of the insertion rod (11) is provided with a chamfer (114).

5. The sofa module quick-install connection structure according to claim 1, characterized in that: The plastic inner cylinder (23) and the hollow screw (21) are interference fit.

6. The sofa module quick-install connection structure according to claim 1, characterized in that: A circle of steps (233) is provided at the top of the plastic inner cylinder (23), and the outer diameter of the steps (233) is larger than the inner diameter of the hollow screw (21).

7. The sofa module quick-install connection structure according to claim 1, characterized in that: The bottom end of the plastic inner cylinder (23) is provided with a plurality of notches (234) extending upward.

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