Sofa assembling and connecting structure

Abstract

The utility model discloses a sofa assembling and connecting structure, which solves the technical problems that the existing plug pin cannot be interchanged up and down, is difficult to install, is difficult to assemble in place and the like, and comprises a plug pin component and a positioning component. The bolt assembly comprises a male pin and a female pin; the male pin comprises a male pin main body and an L-shaped guide part to form a U-shaped groove, so that the friction resistance when the male pin and the female pin are combined is reduced, the friction abnormal sound is reduced, and the problems of large friction resistance of a traditional bolt piece and friction abnormal sound of a hardware part are solved; the female pin comprises a female pin body and a plug. The positioning assembly comprises a positioning baffle and a mounting guide box. Enough assembling gaps are reserved between the male pins and the female pins, so that the soft sofa is more suitable for manual assembling of the soft sofa, precision deviation does not affect assembling in the assembling gaps, the plug pin assemblies are identical in vertical width and thickness and can be interchanged vertically and horizontally, and the problem that traditional plug pin pieces cannot be interchanged vertically is solved. The bolt assembly is matched with the positioning assembly, so that the whole sofa is convenient to carry, and the mounting flexibility is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of sofa assembly devices, and in particular to a sofa assembly connection structure. Background Technology

[0002] The assembly and connection structure of a sofa is a crucial component in furniture manufacturing, directly impacting the furniture's stability, durability, and ease of assembly. Among existing technologies, tapered pins, as a common connection structure, are widely used in the assembly process of upholstered sofas.

[0003] Existing latches are typically tapered, narrower at the bottom and wider at the top, thicker at the top and thinner at the bottom. This design allows the male and female latches to gradually improve their fit as the insertion depth increases, resulting in a tighter connection. However, once a single male and female latch is properly connected, the gap is approximately 1mm. In the upholstered furniture industry, where assembly is primarily manual, this 1mm gap places excessively high demands on the craftsmanship and the precision of the mounting holes, leaving insufficient tolerance for error. Furthermore, since two pairs of latches are generally required to connect two parts of a sofa, and the latches become increasingly tight during assembly, any deviation can lead to difficulty in proper assembly. In addition, to prevent over-installation, the female latches on the market have a limiting structure at the bottom, restricting sofa installation to one direction only and limiting the flexibility of furniture design. Summary of the Invention

[0004] To address the aforementioned technical problems, this utility model provides a sofa assembly and connection structure. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0005] The present invention adopts the following technical solution:

[0006] A sofa assembly connection structure is provided, including: a pin assembly and a positioning assembly;

[0007] The pin assembly includes: a male pin and a female pin;

[0008] The male pin includes: a male pin body and L-shaped guide portions symmetrically arranged on both sides of the male pin body, wherein the L-shaped guide portions and the male pin body form a slot, and the width of the female pin is less than the distance between the bottom walls of the two slots.

[0009] The female pin includes: a female pin body and plugs symmetrically arranged on both sides of the female pin body, the plugs being embedded in the slot, and the width of the plugs being smaller than the width of the slot.

[0010] The positioning component includes a positioning baffle and a mounting guide box that carries the positioning baffle. When the positioning baffle is in the locked position of the mounting guide box, the front half of the positioning baffle is located at the bottom of the pin.

[0011] Furthermore, both the upper and lower ends of the plug and the L-shaped guide are provided with beveled openings.

[0012] Furthermore, both the male pin body and the female pin body are provided with several mounting holes.

[0013] Furthermore, the width of the male pin is 58mm, the thickness of the male pin body and the L-shaped guide is 2mm, the distance between the bottom walls of the two slots is 54mm, and the width of the female pin is 48mm.

[0014] Furthermore, the plug includes: a first strip and a second strip; the female pin body has a U-shaped cross-section, and the two sides of the female pin body extend in a direction away from each other to form the first strip, and the first strip bends toward the side where the female pin is fixed to form the second strip.

[0015] Furthermore, the slot width is 9mm, the plug width is 6.5mm, and when the first strip is in contact with the male pin body, the distance between the outer edge of the second strip and the slot wall is 2.5mm.

[0016] Furthermore, through slots are formed on both sides of the mounting guide box, and both ends of the positioning baffle extend from the through slots. An anti-detachment block is provided in the middle part of the positioning baffle. When the anti-detachment block is in contact with the inner wall of the front end of the mounting guide box, the positioning baffle is in the locked position of the mounting guide box, and the front half of the positioning baffle is located at the bottom of the pin. When the anti-detachment block is in contact with the inner wall of the rear end of the mounting guide box, the positioning baffle is in the unlocked position of the mounting guide box, and the front half of the positioning baffle is located inside the mounting guide box.

[0017] Furthermore, the positioning component also includes an operating lever, which is hinged to the rear half of the positioning baffle.

[0018] Furthermore, the positioning component also includes: a mounting plate and a reinforcing rib plate. The mounting plate is provided on both the upper and lower sides of the mounting guide box. The mounting plate is provided with a reinforcing rib plate and is connected to the mounting guide box. The mounting plate has through holes.

[0019] The beneficial effects of this utility model are:

[0020] 1. When the male and female pins are installed together, the structural design leaves sufficient assembly gap. Therefore, compared with the prior art, the tolerance adjustment limit of this application is greater, which is more suitable for the manual assembly of upholstered sofas. When the precision deviation is within the assembly gap, it does not affect the assembly. Moreover, the pin components have the same width and thickness at the top and bottom, so there is no need to distinguish the top and bottom directions when connecting, which makes the installation more flexible.

[0021] 2. The use of the latch assembly and positioning assembly together reduces the difficulty of installation while ensuring the stability of the sofa component connections, making it easier to move and relocate the sofa as a whole and improving installation flexibility. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the pin assembly of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the male and female pins after assembly.

[0025] Figure 3 This is a cross-sectional schematic diagram of the male and female pins after assembly.

[0026] Figure 4 This is a front view of the publicly sold utility model;

[0027] Figure 5 This is a side view of the publicly available version of this utility model;

[0028] Figure 6 This is a top view of the publicly available utility model;

[0029] Figure 7 This is a perspective view of the publicly sold utility model;

[0030] Figure 8 This is a front view of the female pin of this utility model;

[0031] Figure 9 This is a side view of the female pin of this utility model;

[0032] Figure 10 This is a top view of the female pin of this utility model;

[0033] Figure 11 This is a perspective view of the female pin of this utility model;

[0034] Figure 12 This is a schematic diagram showing the positions of the positioning pin and the positioning component when the positioning baffle of this utility model is in the locking position of the installation guide box;

[0035] Figure 13 This is a schematic diagram showing the positions of the pin and the positioning component when the positioning baffle of this utility model is in the unlocked position of the installation guide box;

[0036] Figure 14 This is a schematic diagram of the structure of this utility model when the public pin is installed on the side of the seat bag;

[0037] Figure 15 This is a schematic diagram of the structure of this utility model when the female pin is installed on the inner side of the handrail. Detailed Implementation

[0038] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] like Figure 1-15 As shown, in some illustrative embodiments, a sofa assembly connection structure is provided, including: a pin assembly and a positioning assembly.

[0040] The latch assembly includes a male pin 100 and a female pin 200. Generally, two male pins 100 or two female pins 200 are provided on the side of the sofa seat cushion, and two female pins 200 or male pins 100 are provided on the inner side of the armrest. The male pins 100 and female pins 200 are positioned correspondingly and interchangeable to improve design flexibility. In this embodiment, the assembly between the sofa seat cushion and the armrest is achieved through the cooperative use of the male pins 100 and female pins 200.

[0041] The male pin 100 has a uniform width and a uniform plate thickness of 2mm. Specifically, it includes a male pin body 110 and L-shaped guide portions 120 symmetrically arranged on both sides of the male pin body 110. The male pin body 110 is a flat plate structure, and the L-shaped guide portions 120 are L-shaped plate structures, integrally formed with the male pin body 110. The L-shaped guide portions 120 and the male pin body 110 form two slots 130 with opposite openings, used for assembly with the female pin 200. The design of the L-shaped guide portions 120 serves as a guide, preventing significant displacement of the female pin 200 during insertion, and also provides a limiting function after the female pin 200 is inserted into the male pin 100, preventing the female pin 200 from laterally dislodging.

[0042] The female pin 200 has a uniform width and a uniform plate thickness of 2mm. Specifically, it includes a female pin body 210 and plugs symmetrically arranged on both sides of the female pin body 210. The female pin body 210 is a U-shaped plate structure with inclined sides. The plugs and female pin body 210 are integrally formed. After the sofa is assembled, the plugs are inserted into the slots 130 to fix the sofa components. The plugs include a first strip 220 and a second strip 230. The two sides of the female pin body 210 extend in mutually distancing directions to form the first strip 220. The first strip 220 bends towards the fixing surface of the female pin 200 to form the second strip 230. The second strip 230 is inclined. The fixing surface of the female pin 200 refers to the side that contacts the sofa seat or armrest.

[0043] Both the male pin body 110 and the female pin body 210 are provided with several mounting holes 140. The mounting holes 140 are 8mm in diameter and are used to install the male pin 100 and the female pin 200 onto the sofa parts using M6*20mm flat-head screws.

[0044] Both the plug and the L-shaped guide portion 120 have beveled openings 240 at their upper and lower ends. The beveled opening is a notch formed by opening an inclined plane at the upper and lower ends of the plug and the upper and lower ends of the plate in the L-shaped guide portion 120 that is parallel to the male pin body 110. The design of the beveled opening 240 makes it easier for the male pin 100 and the female pin 200 to connect, reducing the difficulty of assembly.

[0045] The width D1 of the public pin 100 is 58mm, the thickness D2 of the public pin body 110 and the L-shaped guide part 120 is 2mm, the width D3 of the plate in the L-shaped guide part 120 that is parallel to the public pin body 110 is 12mm, and the width D4 of the plate that is perpendicular to the public pin body 110 is 13mm. Therefore, the distance H1 between the bottom walls of the two slots 130 is 58mm-2mm-2mm=54mm, and the slot width H2 of the slot 130 is 13mm-2mm-2mm=9mm.

[0046] The width D5 of the female pin 200 is 48mm. The width H3 of the plug is 6.5mm. When the first strip 220 is in contact with the male pin body 110, the distance H4 between the outer edge of the second strip 230 and the groove wall of the slot 130 is 9mm-6.5mm=2.5mm.

[0047] Therefore, the width D5 of the female pin 200 is less than the distance H1 between the bottom walls of the two slots, leaving a gap of 54mm-48mm=6mm. At the same time, the width H3 of the plug is less than the width of the slot H2, leaving a gap of 9mm-6.5mm=2.5mm.

[0048] Because the male pin 100 and female pin 200 are designed with sufficient assembly clearance for installation, this application offers greater tolerance for error adjustment compared to existing technologies, making it more suitable for manual assembly of upholstered sofas. Furthermore, the pin components of this application have the same width and thickness at both ends, without any limiting structure. This eliminates the need to distinguish between the top and bottom directions when connecting sofas, and assembly is unaffected by precision deviations within the assembly clearance range, resulting in greater installation flexibility.

[0049] To ensure the overall connection stability of the sofa, this application provides a positioning component on the side of the public pin 100. Specifically, the positioning component includes: a positioning baffle 300, an installation guide box 400, an operating rod 500, an installation plate 600, and a reinforcing rib plate 700.

[0050] The mounting guide box 400 is used to support the positioning baffle 300. Through grooves 410 are opened on both sides of the mounting guide box 400. The two ends of the positioning baffle 300 extend out of the through grooves 410. An anti-detachment block 310 is provided in the middle part of the positioning baffle 300. The width of the anti-detachment block 310 is greater than the width of the through groove 410. The design of the anti-detachment block 310 can prevent the positioning baffle 300 from falling off the mounting guide box 400, and at the same time, it can limit the extreme position that the positioning baffle 300 can reach when moving left and right, thereby determining the locking position and the unlocking position.

[0051] When the anti-detachment block 310 is in contact with the inner wall of the front end of the mounting guide box 400, the positioning baffle 300 is in the locked position of the mounting guide box 400. At this time, the front half of the positioning baffle 300 extends completely from the through groove 410 on the front end of the box wall, and the front half of the positioning baffle 300 is located at the bottom of the male pin 100, sealing the bottom of the male pin 100, so that the female pin 200 cannot come out from the bottom of the male pin 100, making the connection more stable and facilitating the overall transportation and relocation of the sofa.

[0052] When the sofa is lifted, due to the weight of the armrests, the female pin 200 will apply a certain pressure to the positioning baffle 300. Therefore, there is sufficient friction between the upper surface of the positioning baffle 300 and the lower end face of the female pin 200, making it difficult for the positioning baffle 300 to retract to its original position. Therefore, there is no need to design a fixed structure to keep the positioning baffle 300 in the locked position.

[0053] When the anti-detachment block 310 is in contact with the inner wall of the rear end of the mounting guide box 400, the positioning baffle 300 is in the unlocked position of the mounting guide box 400, and the front half of the positioning baffle 300 is located inside the mounting guide box 400. At this time, the positioning baffle 300 no longer limits the downward movement of the female pin 200, so the sofa parts can be freely disassembled and assembled. In this embodiment, the front end of the mounting guide box 400 and the front half of the positioning baffle 300 refer to the side closer to the male pin 100.

[0054] The pin assembly and the positioning assembly work together. When the positioning assembly does not limit the movement, the pin assembly does not need to distinguish between the up and down directions when connecting the sofa. After assembly, the positioning assembly limits the movement to ensure the overall connection stability of the sofa and facilitate the overall handling and relocation of the sofa. Therefore, the structural design of this application reduces the installation difficulty while ensuring the stability of the sofa component connection and improving the installation flexibility.

[0055] The operating lever 500 is hinged to the rear half of the positioning baffle 300. After the sofa is assembled, the operating lever 500 is clamped between the sofa seat and the armrest. Since the sofa parts are relatively soft, they can provide enough deformable space for the operation lever 500. The positioning baffle 300 can be moved left and right by pulling the operating lever 500, which has the advantage of being easy to operate.

[0056] Mounting plates 600 are provided on both the upper and lower sides of the mounting guide box 400. Through holes are formed in the mounting plates 600, which are then fixed to the sofa component using bolts, thereby securing the mounting guide box 400 to the sofa. Reinforcing ribs 700 are provided on the mounting plates 600, connecting to the mounting guide box 400. The design of the reinforcing ribs 700 improves the strength of the mounting guide box 400, allowing the positioning baffle 300 to provide sufficient support to bear the female pin 200.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sofa assembly and connection structure, characterized in that, include: Pin assembly and positioning assembly; The pin assembly includes: a male pin and a female pin; The male pin includes: a male pin body and L-shaped guide portions symmetrically arranged on both sides of the male pin body, wherein the L-shaped guide portions and the male pin body form a slot, and the width of the female pin is less than the distance between the bottom walls of the two slots. The female pin includes: a female pin body and plugs symmetrically arranged on both sides of the female pin body, the plugs being embedded in the slot, and the width of the plugs being smaller than the width of the slot. The positioning component includes a positioning baffle and a mounting guide box that carries the positioning baffle. When the positioning baffle is in the locked position of the mounting guide box, the front half of the positioning baffle is located at the bottom of the pin.

2. The sofa assembly and connection structure according to claim 1, characterized in that, Both the upper and lower ends of the plug and the L-shaped guide are provided with beveled openings.

3. The sofa assembly and connection structure according to claim 2, characterized in that, Both the male and female pins have several mounting holes.

4. The sofa assembly and connection structure according to claim 3, characterized in that, The male pin has a width of 58mm, the male pin body and the L-shaped guide portion have a thickness of 2mm, the distance between the bottom walls of the two slots is 54mm, and the female pin has a width of 48mm.

5. The sofa assembly and connection structure according to claim 4, characterized in that, The plug includes: a first strip and a second strip; the female pin body has a U-shaped cross-section, and the two sides of the female pin body extend in a direction away from each other to form the first strip, and the first strip bends toward the side where the female pin is fixed to form the second strip.

6. The sofa assembly and connection structure according to claim 5, characterized in that, The slot has a width of 9mm, the plug has a width of 6.5mm, and when the first strip is in contact with the main body of the male pin, the distance between the outer edge of the second strip and the wall of the slot is 2.5mm.

7. The sofa assembly and connection structure according to claim 6, characterized in that, The mounting guide box has through slots on both sides of its box walls. The two ends of the positioning baffle extend from the through slots, and an anti-detachment block is provided in the middle of the positioning baffle. When the anti-detachment block is in contact with the inner wall of the front end of the mounting guide box, the positioning baffle is in the locked position of the mounting guide box, and the front half of the positioning baffle is located at the bottom of the pin. When the anti-detachment block is in contact with the inner wall of the rear end of the mounting guide box, the positioning baffle is in the unlocked position of the mounting guide box, and the front half of the positioning baffle is located inside the mounting guide box.

8. The sofa assembly and connection structure according to claim 7, characterized in that, The positioning component further includes an operating lever, which is hinged to the rear half of the positioning baffle.

9. A sofa assembly and connection structure according to claim 8, characterized in that, The positioning component further includes: a mounting plate and a reinforcing rib plate. The mounting plate is provided on both the upper and lower sides of the mounting guide box. The mounting plate is provided with a reinforcing rib plate and is connected to the mounting guide box. The mounting plate has through holes.

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