A seat and a space-saving packaging method

Abstract

The application discloses a seat and a space-saving packaging method. The seat comprises a mechanical stretching device, a seat part, a foot stool and a backrest. The seat part, the foot stool and the backrest are detachably connected with the mechanical stretching device. Two mechanism pieces in the mechanical stretching device are detachably connected by a stabilizing tube, a linkage rod and another stabilizing tube from front to back. The seat has two states. In a split state, the backrest, the seat part, the foot stool, the linkage rod, the two stabilizing tubes and the two mechanism pieces are independently detached from each other. In a combined state, the seat is formed by installation and connection. The space-saving packaging method comprises the following steps: firstly, the backrest, the seat part and the foot stool are independently detached from the mechanical stretching device in sequence; secondly, the mechanical stretching device is disassembled, so that the seat is in the split state; and finally, the two mechanism pieces, the two stabilizing tubes, the linkage tube, the seat part, the foot stool and the backrest are stacked and packaged. The space between the two mechanism pieces is eliminated, and the packaging space is maximally saved.

Description

Technical Field

[0001] This invention relates to the field of furniture, and in particular to a seating arrangement and a space-saving packaging method. Background Technology

[0002] Whether in life or at work, seating has become an indispensable part, and people's requirements for seating are increasing day by day. Some people like simple and beautiful furniture, while others yearn for high-end and multifunctional furniture. For seating manufacturers, there are both difficulties and opportunities. While paying attention to people's needs and high requirements, they should also try to reduce costs, obtain greater profits, enter a virtuous cycle, and always maintain competitiveness.

[0003] Taking multifunctional sofas as an example, people have high requirements for the functionality of this type of sofa. Because multifunctional sofas can switch between multiple states, allowing users to sit normally or lie down, this type of seating is generally suitable for rest and relaxation. The specific implementation relies on the mechanical extension device in the sofa, such as the mechanical extension devices shown in patent applications "201810055526.8" and "201921265059.8". This kind of mechanical extension device usually includes: a footstool assembly, a seat cushion support assembly, and a backrest assembly. In other words, the mechanical extension device generally includes two symmetrical mechanical extension units, which are connected together by a linkage tube and an anti-torsion tube to form an integrated mechanical extension device. The backrest, seat, and footstool are then connected to the mechanical extension device to complete the assembly of the sofa.

[0004] From the manufacturer's perspective, the ability to design functions is mature, but there are still unavoidable problems in packaging and transportation. The complete mechanical extension device takes up too much space, especially the space between two functional parts. Most of the current packaging methods simply involve removing the backrest and stacking it on the seat, but this does not solve the above problem. Simply disassembling sofa parts does not maximize the saving of packaging space. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a seat, a footstool, and a backrest that are detachably connected to a mechanical extension device. The two mechanism pieces in the mechanical extension device are detachably connected from front to back by a stabilizing tube, a linkage rod, and another stabilizing tube. The seat has two states: in the disassembled state, the backrest, seat, footstool, linkage rod, two stabilizing tubes, and two mechanism pieces are disassembled and independent; in the assembled state, they are assembled and connected to form the complete seat.

[0006] Furthermore, a space-saving packaging method is provided, in which the backrest, seat, and footstool are first removed from the mechanical extension device in sequence, the mechanical extension device is then disassembled to put the seating in a disassembled state, and finally the two mechanism pieces, two stabilizing tubes, linkage tubes, seat, footstool, and backrest are stacked and packaged.

[0007] The technical solution of this invention is implemented as follows:

[0008] A seating arrangement includes a mechanical extension device, a seat, a footstool, and a backrest. The backrest is inserted into the rear of the mechanical extension device, the footstool is inserted into the front of the mechanical extension device, and the seat is detachably connected to the mechanical extension device. The mechanical extension device includes two spaced-apart mechanism plates, which are detachably connected by a linkage assembly. The linkage assembly includes two stabilizing tubes and one linkage tube, arranged sequentially from front to back between the two mechanism plates in the order of stabilizing tube, linkage tube, and another stabilizing tube, and each of the three is detachably connected to the mechanism plates on both sides. The seating arrangement has two states: an assembled state and a disassembled state. In the disassembled state, the backrest, seat, and footstool are detached from the mechanical extension device and are independent of each other. The linkage tube and the two stabilizing tubes are detached from between the two mechanism plates, and the linkage tube, the two stabilizing tubes, and the two mechanism plates are all independent of each other. In the assembled state, the two stabilizing tubes are connected to the mechanism plates, and the linkage tube is connected to the two mechanism plates to form the mechanical extension device. The seat, footstool, and backrest are then installed on the mechanical extension device.

[0009] This seating unit has two states. In the disassembled state, not only can the sofa components such as the backrest, seat, and footstool be independently removed from the mechanical extension device, but the mechanical extension device itself can also be disassembled. The two mechanism plates, two stabilizing tubes, and one linkage tube are all independent of each other. Packaging at this point can avoid excessively large gaps between the two mechanism plates. In the assembled state, the two stabilizing tubes, the linkage tube, and the mechanism plates are connected to form the mechanical extension device. The seat, footstool, and backrest are then installed onto the mechanical extension device to form the complete seating unit, thus realizing the functional use of the seating unit.

[0010] A space-saving packaging method, applied to the aforementioned seating, comprises the following steps:

[0011] S1. Disassemble the seating components: Remove the backrest, seat, and footrest from the mechanical extension device one by one;

[0012] S2. Disassemble the mechanical extension device: First, remove the linkage tube from between the two mechanism plates, then remove the two stabilizing tubes from between the two mechanism plates. The two mechanism plates are separated from each other, and the seat is in the disassembled state at this time.

[0013] S3. Spatial arrangement: Place the two mechanism pieces horizontally and stack them with their left and right sides partially overlapping. Then, stack the stabilizing tube and linkage tube, seat and footstool, and backrest on the two mechanism pieces from bottom to top, and package them as a whole.

[0014] This packaging method is applied to the aforementioned seating. The seating is disassembled sequentially to achieve a disassembled state. The mechanical extension device can only be further disassembled after the seating components are removed from it. Specifically, the backrest, seat, and footrest are removed from the mechanical extension device first in step S1. The seating components will not restrict the mechanical extension device. Then, the mechanical extension device is disassembled in step S2. The disassembled mechanical extension device naturally eliminates the useless space between the two mechanism pieces. Each disassembled component is independent and can be stacked together in step S3 to achieve the spatial arrangement for packaging and transportation, greatly improving space utilization and thus saving space and packaging and transportation costs.

[0015] Preferably, the mechanical extension device is connected to a handrail, which is approximately parallel to and fixedly connected to the mechanism piece. In step S2, the two mechanism pieces separate from each other, but they remain connected to the handrails. In step S3, the handrails and mechanism pieces are arranged as a single unit, with the two handrails sandwiching the two mechanism pieces in the middle. Whether in the disassembled or assembled state, the handrails and mechanism pieces are fixedly connected, and can be considered as a single unit. Installation and packaging are performed using this unified unit, which simplifies the installation process and does not affect the packaging space.

[0016] Preferably, the handrail and the mechanism plate are fixedly connected by a transition piece, and a corresponding gap is formed between the handrail and the mechanism plate. In step S3, a corresponding gap is also formed between the handrail on one mechanism plate and the other mechanism plate, and the linkage component is placed in these gaps. The stabilizing tube and the linkage tube are both simple tubular components with thin thickness and small space requirements. Therefore, the stabilizing tube and the linkage tube can be placed in the gap between the handrail and the mechanism plate, thereby further saving space.

[0017] Preferably, the linkage tube is a straight tube, and the stabilizing tube is a ring-shaped tube. The handrail on one of the mechanism plates faces upwards, and the linkage tube is placed between the mechanism plate and the handrail. The two stabilizing tubes are placed between the other mechanism plate and the handrail. There must be a connecting piece between the mechanism plate and the handrail. The linkage tube, being a straight tube, can be placed anywhere without interference. However, the stabilizing tube, being a ring-shaped tube, requires sufficient open space to avoid and accommodate it. Therefore, it cannot be placed on the side with the connecting piece, but rather between the other mechanism plate and the handrail, which is both convenient and efficient.

[0018] Preferably, the backrest, seat, and footstool are all roughly block-shaped, the two mechanism pieces are plate-shaped, and the linkage tube and stabilizing tube are tubular components. In step S3, the backrest, seat, footstool, and the disassembled mechanical extension device are stacked layer by layer, with adjacent components touching each other. It is evident that in the disassembled state, each component has a simple shape. When simple-shaped components are stacked, there are naturally no large gaps between them, thus avoiding much wasted space, such as the space originally in the mechanical extension device, thereby reducing packaging and transportation costs.

[0019] Preferably, the seat includes a U-shaped seat frame and a cushion mounted on the seat frame. In the assembled state, the seat frame surrounds and is fixedly connected to the mechanical extension device. In the disassembled state, the seat frame is removed from the mechanical extension device, while the seat frame and the cushion remain fixedly connected. In step S3, the seat is stacked on top of the disassembled mechanical extension device.

[0020] Preferably, the lower surface of the seat cushion has an upward-facing groove, and the seat frame is fixedly connected to this groove. Installing the seat frame in the groove of the seat cushion reduces the overall thickness of the seat, thereby reducing packaging space and lowering costs.

[0021] Preferably, the footstool includes a footrest and a foot pad. One side of the footrest is detachably connected to the mechanical extension device, and the other side is fixedly connected to the foot pad. In the assembled state, the footrest is connected to the front side of the mechanical extension device, and the foot pad is located in front of the footrest. In step S3, the footrest is stacked on top of the disassembled mechanical extension device and located between the seat and the mechanical extension device.

[0022] Preferably, the mechanism piece includes a back connecting piece located at the rear. In the assembled state, the back connecting piece protrudes upward from the seat and is inserted into the backrest. In step S3, the back connecting piece is placed horizontally together with the mechanism piece, and the backrest is stacked on top of the mechanism piece and located above the seat.

[0023] The design starting point, concept, and beneficial effects of the present invention, which adopts the above technical solution, are as follows:

[0024] The concept of this invention is that, through the KD structure of each part of the seating, after the sofa components are removed, the mechanical extension device is further disassembled into individual components, effectively eliminating the useless space between the two mechanical pieces, thereby allowing for a more space-efficient arrangement during packaging, saving costs and increasing efficiency.

[0025] This seating unit has two states. In the disassembled state, not only can the sofa components such as the backrest, seat, and footstool be independently removed from the mechanical extension device, but the mechanical extension device itself can also be disassembled. The two mechanism plates, two stabilizing tubes, and one linkage tube are all independent of each other. Packaging at this point can avoid excessively large gaps between the two mechanism plates. In the assembled state, the two stabilizing tubes, the linkage tube, and the mechanism plates are connected to form the mechanical extension device. The seat, footstool, and backrest are then installed onto the mechanical extension device to form the complete seating unit, thus realizing the functional use of the seating unit.

[0026] This packaging method is applied to the aforementioned seating. The seating is disassembled sequentially to achieve a disassembled state. The mechanical extension device can only be further disassembled after the seating components are removed from it. Specifically, the backrest, seat, and footrest are removed from the mechanical extension device first in step S1. The seating components do not restrict the mechanical extension device. Then, the mechanical extension device is disassembled in step S2. The disassembled mechanical extension device naturally eliminates the useless space between the two mechanism pieces. Each disassembled component is independent and can be stacked together in step S3 to achieve the spatial arrangement for packaging and transportation, greatly improving space utilization and maximizing the saving of packaging space, thus reducing packaging and transportation costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the sofa in an embodiment of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the sofa in an embodiment of the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the sofa after disassembly in an embodiment of the present invention. Figure 1 ;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the sofa after disassembly in an embodiment of the present invention. Figure 2 ;

[0031] Figure 5 This is a three-dimensional structural diagram of the mechanism sheet in the embodiment of the present invention;

[0032] Figure 6 This is a three-dimensional structural diagram of the mechanism plate and handrail in an embodiment of the present invention;

[0033] Figure 7 This is a three-dimensional structural diagram of the transition member disposed on the mechanism piece in an embodiment of the present invention;

[0034] Figure 8This is a three-dimensional structural diagram of the seat frame in an embodiment of the present invention;

[0035] Figure 9 This is a three-dimensional structural diagram of the seat frame mounted on the transition piece in an embodiment of the present invention;

[0036] Figure 10 This is a three-dimensional structural diagram of the plug-in component assembly in an embodiment of the present invention;

[0037] Figure 11 This is a three-dimensional structural diagram of the socket mounted on the foot connector in an embodiment of the present invention;

[0038] Figure 12 This is a three-dimensional structural diagram of the socket in an embodiment of the present invention;

[0039] Figure 13 This is a front view of the elastic locking member in an embodiment of the present invention;

[0040] Figure 14 This is a side view of the control component mounted on the mechanism piece in an embodiment of the present invention;

[0041] Figure 15 This is a side view of the drive component mounted on the mechanism piece in an embodiment of the present invention;

[0042] Figure 16 This is a top view of the invention after the linkage pipe and the mounting pipe are connected in an embodiment;

[0043] Figure 17 This is a three-dimensional structural diagram of the connection between the mounting pipe and the drive assembly in an embodiment of the present invention;

[0044] Figure 18 This is a three-dimensional structural diagram of the second sleeve in an embodiment of the present invention;

[0045] Figure 19 This is a cross-sectional view of the second sleeve in an embodiment of the present invention;

[0046] Figure 20 This is a three-dimensional structural diagram of the first sleeve installed on the mounting pipe in an embodiment of the present invention;

[0047] Figure 21 This is a three-dimensional structural diagram of the baffle plate on the linkage pipe in an embodiment of the present invention;

[0048] Figure 22 This is a three-dimensional structural diagram of the annular tube installed on the first transmission rod and the second transmission rod in an embodiment of the present invention;

[0049] Figure 23 This is a three-dimensional structural diagram of the first transmission rod in an embodiment of the present invention;

[0050] Figure 24 This is a three-dimensional structural diagram of the annular tube in an embodiment of the present invention;

[0051] Figure 25 This is a flowchart of the packaging method in an embodiment of the present invention;

[0052] Figure 26 This is a three-dimensional structural diagram of the sofa stacking and packaging in an embodiment of the present invention. Figure 1 ;

[0053] Figure 27 This is a three-dimensional structural diagram of the sofa stacking and packaging in an embodiment of the present invention. Figure 2 ;

[0054] Figure 28 This is a three-dimensional structural diagram of the sofa stacking and packaging in an embodiment of the present invention. Figure 3 .

[0055] The reference numerals in the attached drawings are as follows: 1. Mechanical extension device; 2. Mechanism plate; 3. Linkage assembly; 31. Linkage pipe; 311. Baffle plate; 32. Stabilizing pipe; 4. Seat; 41. Seat frame; 411. Front pipe; 412. Rear pipe; 413. Connecting pipe; 414. Mounting pin; 4141. Frustum; 42. Seat cushion; 421. Footstool; 5. Footrest; 51. Base; 7. Base plate; 71. Supporting platform; 711. Lug; 712. Clearance hole; 713. Bottom 72; footrest linkage assembly 8; footrest connector 81; front side plate 811; round hole 812; back linkage assembly 9; back connecting piece 91; armrest 10; transition piece 11; mounting groove 111; main body crossbar 112; long vertical bar 113; short vertical bar 114; connecting lug 12; plug-in assembly 13; pin 131; head 1311; tail 1312; main body 1313; annular groove 1314; snap-fit ​​part 1315; Socket 132; Socket 133; Side slot 1331; Stop 1332; Connecting plate 134; Elastic locking element 14; Limiting end 141; Entering end 142; Snap rod 1421; Meeting part 14211; Locking rod 143; Opening 144; Control assembly 15; Operating lever 151; Pull ring 1511; Push rod 152; Protrusion 1521; Fixing rod 153; Drive assembly 16 Rotating rod 161; Connecting hole 1611; Mounting plate 1612; Drive rod 162; Spring 17; Mounting tube 19; First sleeve 20; First mounting hole 201; Second sleeve 21; Slide groove 211; Second mounting hole 212; First transmission rod 22; Second transmission rod 23; Adjustment groove 24; Slot 25; Protrusion 251; Connecting column 26; Locking part 261; Limiting part 262; Backrest 27. Detailed Implementation

[0056] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0057] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0058] In the description of this invention, the term "at least one" means one or more, unless otherwise expressly defined. The terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] The specific embodiments of the present invention are as follows:

[0060] like Figure 1-4 As shown, the present invention provides a seating fixture, which is a detachable sofa, including a mechanical extension device 1 for driving the sofa's movement and a sofa panel installed outside the mechanical extension device 1. The mechanical extension device 1 includes two symmetrically arranged and spaced apart mechanical pieces 2, which are detachably connected to each other by a linkage component 3. The sofa panel includes a seat 4, a footstool 5, and a backrest 27, which are all detachably connected to the mechanical extension device 1. When packing the sofa, the backrest 27, footstool 5, and seat 4 are removed from the mechanical extension device 1, and the two mechanical pieces 2 are separated from the linkage component 3. The backrest 27, footstool 5, seat 4, linkage component 3, and two mechanical pieces 2 all form individual packages to be packed.

[0061] The sofa panels, including the seat 4, footstool 5, and backrest 27, can all be packaged individually. The mechanical extension device 1 can also be disassembled by removing the linkage component 3, allowing the linkage component 3 and the mechanism piece 2 to be packaged separately. Therefore, the seat 4, footstool 5, backrest 27, linkage component 3, and the two mechanism pieces 2 all form individual packages to be packaged. Further arranging these packages improves the space utilization during packaging and transportation, eliminating the adverse effects of the middle part of the traditional mechanical extension device 1 on space utilization. The sofa panels can also be arranged more flexibly, ultimately reducing packaging and transportation costs and improving the manufacturer's efficiency.

[0062] Specifically, in terms of shape, the backrest 27 is generally block-shaped; the seat 4 includes a U-shaped seat frame 41 and a seat cushion 42 installed on the seat frame 41. The lower surface of the seat cushion 42 has an upward-facing groove 421, and the seat frame 41 is fixedly connected in the groove 421. The whole is block-shaped; the footstool 5 includes a footrest 51 and a foot pad (not shown), which is also block-shaped; the mechanism piece 2 includes multiple flat connecting rods, and the mechanism piece 2 formed by this is also flat plate-shaped. The linkage component 3 may include multiple rods. Therefore, the multiple parts to be packaged from the sofa are all block-shaped, plate-shaped, or rod-shaped, which is conducive to space arrangement and increases space utilization.

[0063] Specifically, such as Figure 5 As shown, the mechanism 2 includes a base 7, a footrest linkage assembly 8, and a back linkage assembly 9. Both the footrest linkage assembly 8 and the back linkage assembly 9 are connected to the base 7, and the linkage assembly 3 selectively drives the footrest linkage assembly 8 and the back linkage assembly 9 of the two sides of the mechanism 2 to move relative to the base 7. The seat 4 is detachably connected to the base 7, the footstool 5 is detachably connected to the footrest linkage assembly 8, and the backrest 27 is detachably connected to the back linkage assembly 9. The specific structure of the internal parts of the mechanical extension device 1, i.e., the mechanism 2, is not described in detail. The connection of each linkage and the movement of the mechanism 2 and the mechanical extension device 1 are not the focus of this patent.

[0064] Of course, it can also be applied to multifunctional sofas where the seat 4, footstool 5, and backrest 27 can all move. That is, the mechanism 2 includes a fixed plate (relative to the base 7), a footrest linkage assembly 8, a seat linkage assembly, and a back linkage assembly 9. Compared with the above solution, there is an additional seat linkage assembly. The seat linkage assembly is connected to the fixed plate and can also move relative to the fixed plate. The seat 4 is connected to the seat linkage, thereby realizing the movement of the seat 4. This reflects the wide applicability of this split sofa solution. Since the mechanical extension device 1 is divided into a set of linkage components 3 and two mechanism pieces 2, its advantage is that there is no need to consider the function and type of the mechanism piece 2. It only needs to be split for the current mainstream mechanical extension device 1 structure, which has a wide range of applications. In this embodiment, the solution without a seat linkage assembly is selected.

[0065] Before describing the connection between the seat 4 and the mechanical extension device 1, let's first describe the connection between the armrest 10:

[0066] like Figure 2 , 4As shown in Figures 5 and 6, the base 7 includes a base plate 71 and a base 72. The base plate 71 and the base 72 are both stationary relative to the ground and are fixed components in the mechanism piece 2, while the footrest linkage assembly 8 and the back linkage assembly 9 are moving components. The base 72 is located below the base plate 71 and serves as the main support for the mechanism piece 2. The sofa panel also includes armrests 10. Generally, there are two armrests 10, which are installed on both sides of the mechanical extension device 1. The armrests 10 on both sides are connected to the base plates 71 in the two mechanism pieces 2 respectively, forming the same packaged item.

[0067] The armrest 10 is roughly block-shaped and is installed on the mechanism piece 2. It can be either a fixed connection or a detachable connection. Considering the positional relationship between the armrest 10 and the mechanism piece 2 in the overall sofa (adjacent and close together), it will not have an adverse effect on the space utilization of the packaging. Therefore, the armrest 10 and the mechanism piece 2 can be fixedly connected to form a whole, that is, the same packaged item. This can also reduce the assembly work for consumers.

[0068] Specifically, such as Figure 6 , 7 As shown, a transition piece 11 is provided between the handrail 10 and the base plate 71, and the two are connected by the transition piece 11, which is a tube. The base plate 71 itself is cut to form a support platform 711. The support platform 711 is bent outward and downward so that it extends outward and protrudes from the base plate 71. The transition piece 11 is fixedly erected and locked on the support platform 711 from top to bottom. The handrail 10 is fixedly installed on the side of the transition piece 11 by screws. The diameter of the transition piece 11 is smaller than the width of the outward extension of the support platform 711, which makes the overall structure of the handrail 10 and the mechanism piece 2 more compact and helps to reduce the packaging space.

[0069] The seat frame 41 surrounds the upper part of the mechanical extension device 1 and is detachably connected to the transition piece 11, specifically, as Figure 8 , 9As shown, the frame 41 includes a front tube 411, a rear tube 412, and two connecting tubes 413 located on its left and right sides. The front tube 411 is located at the front and is connected to the rear tube 412 located at the rear via the two connecting tubes 413. The connecting tubes 413 rest on top of the transition piece 11. A downwardly extending connecting lug 12 is fixedly connected to the inner side of the middle of the connecting tube 413 near the front. An upwardly extending connecting lug 12 is fixedly connected to the transition piece 11 on its side. The connecting lug 12 on the connecting tube 413 extends downward to the side of the transition piece 11 and is fixedly connected to the transition piece 11 by screws. The connecting lug 12 on the transition piece 11 extends upward to the side of the connecting tube 413 and is fixedly connected to the connecting tube 413 by screws. A cylindrical mounting pin 414 is provided at the rear of the connecting tube 413. The mounting pin 414 is located below the connecting tube 413 and extends downward. The mounting pin 414 protrudes from the connecting pipe 413 and also includes a frustum 4141 at its lower end. The rear end of the transition piece 11 is provided with a mounting groove 111 from back to front. The mounting pin 414 enters the mounting groove 111 and is pressed against the lower surface of the transition piece 11 by the frustum 4141. The upper end of the mounting pin 414 has a thread. During installation, the seat frame 41 is placed above the transition piece 11. The seat frame 41 is moved so that the mounting pin 414 is aligned with the mounting groove 111 and the mounting pin 414 is pushed into the mounting groove 111. The mounting pin 414 is rotated to adjust the frustum 4141 so that the frustum 4141 is pressed against the lower surface of the transition piece 11. At this time, the two connecting ears 12 are fixed with screws to complete the assembly of the seat frame 41. Finally, the seat cushion 42 is installed on the seat frame 41. Compared with locking with screws, this solution is simpler, more convenient and easier to operate.

[0070] The transition piece 11 can connect both the armrest 10 and the seat 4. Therefore, to facilitate the installation of the seat 4, i.e., to facilitate installation by consumers, gaps need to be reserved between the transition piece 11 and the mechanism piece 2, and between the transition piece 11 and the armrest 10. The diameter of the transition piece 11 is smaller than the outward extension width of the support platform 711, and the transition piece 11 is connected to the outer part of the support platform 711, thereby creating a gap between the transition piece 11 and the mechanism piece 2. The transition piece 11 includes a main crossbar 112 and a long crossbar located on the front side. The vertical rod 113 and the short vertical rod 114 located at the rear, the long vertical rod 113 and the short vertical rod 114 are both located outside the main horizontal rod 112, that is, between the main horizontal rod 112 and the handrail 10. The long vertical rod 113 and the handrail 10 are fixedly connected by two screws, one above and one below, and the short vertical rod 114 and the handrail 10 are fixedly connected by a single screw. The seat frame 41 is installed on the main horizontal rod 112, so the long vertical rod 113 and the short vertical rod 114 also create a gap between the handrail 10 and the seat frame 41 to facilitate the installation of the seat frame 41 or the seat part 4.

[0071] The installation and connection of footstool 5 are described as follows: Figure 2As shown, the footrest linkage assembly 8 includes a footrest connector 81 located at the front end, and the footstool 5 is mounted on the footrest connector 81 and detachably connected via a plug-in assembly 13; specifically, as Figure 10-13 As shown, the plug-in assembly 13 includes a cylindrical pin 131 and a socket 133 with a socket hole 132. The pin 131 is fixed to one of the footrest connector 81 or the foot stool 5, and the socket 133 is fixed to the other. In this embodiment, each mechanism piece 2 is provided with a set of plug-in assemblies 13 between it and the footrest 51. Each set of plug-in assemblies 13 includes two pins 131 and two sockets 133. The two pins 131 are fixed to a connecting plate 134 at intervals. The connecting plate 134 is fixed to the footrest 51 by screws. The sockets 133 are also fixed to the footrest connector 81 at intervals corresponding to the positions of the pins 131. The footrest connector 81 is generally an L-shaped plate with a front side plate 811 facing the footrest 51. Two round holes 812 are opened on the front side plate 811 corresponding to the pins 131, and the sockets 133 are provided at these two round holes 812 and located on the rear surface of the front side plate 811.

[0072] The pin 131 is inserted into the socket 132 and locked in the socket 132 by a removable elastic locking member 14 pre-installed in the socket 133. The elastic locking member 14 is a roughly elliptical annular elastic rod, such as... Figure 13As shown, one end of the pin is a limiting end 141, and the other end is an entry end 142. Two locking rods 143 are spaced apart between the limiting end 141 and the entry end 142. The limiting end 141 is a semi-circular rod, with both ends fixedly connected to the two locking rods 143 respectively. The entry end 142 includes two opposing V-shaped latching rods 1421, forming an opening 144 between them. The distance between the openings 144 is less than the distance between the two locking rods 143. The pin 131 has a head 1311 away from the footrest 51, a tail 1312 near the footrest 51, and a main body 1313 located between the head 1311 and the tail 1312. An opening is formed at the tail 1312. A ring groove 1314 is provided, forming a snap-fit ​​portion 1315 with a diameter smaller than that of the main body 1313. The spacing of the openings 144 is smaller than the diameter of the snap-fit ​​portion 1315, and the spacing between the two locking rods 143 is smaller than the diameter of the main body 1313 but not smaller than the diameter of the snap-fit ​​portion 1315. The head 1311 is rounded to facilitate entry between the two locking rods 143. A side slot 1331 is also provided on the socket 133, extending through the socket 133 and connecting to the socket hole 132 in the left-right direction. An elastic locking member 14 is inserted into the side slot 1331. Two stops 1332 are provided in the side slot 1331, located on the left and right sides of the socket hole 132. The stops 1332 cooperate with the limiting end 141 to prevent... After the elastic locking member 14 is inserted into the side slot 1331, it falls out. Further, the latching rod 1421 includes an outwardly bent welcoming portion 14211. The welcoming portion 14211 facilitates the insertion end 142 into the side slot 1331. When encountering the stop block 1332, the welcoming portion 14211 conforms to the side slot, causing the elastic locking member 14 to deform and open. After leaving the side slot 1331, the welcoming portion 14211 expands outward to prevent the elastic locking member 14 from easily disengaging from the side slot 1331, but it can also be pulled out of the side slot 1331. After the elastic locking member 14 is inserted into the side slot 1331, the two locking rods 143 are partially exposed in the insertion hole 132. The foot rest 51 is removed to align the pin 131 with the insertion hole. 132, and insert the pin 131 into the socket 132 from front to back. The head 1311 of the pin first enters between the two locking rods 143 and causes the elastic locking member 14 to gradually deform and widen the distance between the two locking rods 143. The pin 131 continues to move forward, and the locking rod 143 passively passes through the main body 1313 and then reaches the snap-fit ​​part 1315, and restores its deformation to snap into the annular groove 1314, so that the snap-fit ​​part 1315 is located between the two locking rods 143 and the locking rods 143 are located in the annular groove 1314. The snap-fit ​​part 1315 is snapped by the locking rods 143, thereby locking the pin 131 in the socket 132. The mechanism pieces 2 on both sides are connected to the foot plate 51 in this way to realize the quick installation of the foot plate 51.

[0073] The back connecting rod assembly 9 includes a back connecting piece 91 that protrudes upward from the seat portion 4 and is inserted into the backrest 27. The back connecting piece 91 is connected to the backrest 27 by screws after being inserted into it. During packaging and transportation, the screws can be unscrewed to remove the backrest 27.

[0074] The mechanical extension device 1 is described as follows: Figure 7 As shown, a control component 15 is provided on the substrate 71, and the mechanism piece 2 also includes a drive component 16. The user can drive the drive component 16 to move through the control component 15, thereby driving the entire mechanism piece 2 to move. Since the two mechanism pieces 2 are connected by a linkage component 3, the linkage component 3 can drive the other mechanism piece 2 to move, thereby moving the entire mechanical extension device 1; specifically, as Figure 14 , 15 As shown, the control assembly 15 includes a joystick 151, a push rod 152, and a fixed rod 153 fixedly connected to the base plate 71. The upper end of the joystick 151 is provided with a pull ring 1511 for easy operation. The lower end of the joystick 151 is rotatably connected to the front end of the push rod 152. The push rod 152 is rotatably mounted on the fixed rod 153. The drive assembly 16 includes a rotating rod 161 and a drive rod 162. The front end of the rotating rod 161 is rotatably mounted relative to the base plate 71. The rear end of the rotating rod 161 is rotatably connected to the rear end of the drive rod 162. The front end of the drive rod 162 is rotatably connected to the footrest linkage assembly 8. The footrest linkage assembly 8 and the back linkage assembly 9 are connected by a transmission linkage assembly. The rear end of the push rod 152 is provided with a protrusion 1521 and abuts against the rear ends of the rotating rod 161 and the drive rod 162 for pushing the rotating rod 161 and the drive rod 162 to move. The protrusion 1521 and the push rod 152 are fixedly mounted on the fixed rod 153. The distance between the connection points of rod 153 and push rod 152 is less than the distance between the front end of push rod 152 and the connection point between push rod 152 and fixed rod 153, making the operation easier for the user. A spring 17 is also provided between drive rod 162 and base plate 71. One end of spring 17 is set in a hole opened on drive rod 162, and the other end of spring 17 is installed on lug 712 fixed on base plate 71. Spring 17 is always in an extended state, which can provide assistance for the unfolding movement of mechanical extension device 1. When the sofa is in the normal sitting state, drive assembly 16 is in the folded state. Pulling the control rod 151 upward, the front end of push rod 152 moves upward, and its rear end pushes the rotating rod 161 and the rear end of drive rod 162 forward. With the assistance of spring 17, drive assembly 16 switches from the folded state to the unfolded state. The footrest linkage assembly 8 and backrest linkage assembly 9 move accordingly, so that the sofa switches from the normal sitting state to the reclining state.

[0075] Furthermore, such as Figure 2-4As shown, the linkage assembly 3 includes a linkage pipe 31 and two stabilizing pipes 32. The two stabilizing pipes 32 are arranged in the left-right direction and positioned one in front of the other between the two mechanism pieces 2. The left and right ends of the stabilizing pipes 32 are connected to the two mechanism pieces 2. The linkage pipe 31 is positioned between the two stabilizing pipes 32 and parallel to the two stabilizing pipes 32. Specifically, as shown... Figure 16-21 As shown, the mechanism 2 also includes two mounting tubes 19, and the linkage tube 31 is connected to the two mounting tubes 19. These three tube sections are arranged in the left-right direction. The rotating rod 161 rotates relative to the base plate 71 through these three tube sections. These three tube sections are equivalent to the rotating pins of the rotating rod 161 and the base plate 71. A first sleeve 20 with external threads is installed on the mounting tube 19, and a second sleeve 21 with internal threads is installed at both ends of the linkage tube 31. The first sleeve 20 has a first mounting hole 201 that matches the cross-section of the mounting tube 19, and the second sleeve 21 has a sliding groove 211. A second mounting hole 212 matching the cross-section of the linkage pipe 31 is provided. The second mounting hole 212 is connected to the slide groove 211, and the two allow the second sleeve 21 to pass through. The internal thread of the second sleeve 21 is provided at the end of the slide groove 211. The surface between the internal thread and the second mounting hole 212 remains smooth. The first sleeve 20 and the second sleeve 21 can be locked by threaded connection. The mounting pipe 19 is inserted into the first mounting hole 201, and the linkage pipe 31 is inserted into the second mounting hole 212. The end of the linkage pipe 31 is provided with a baffle 311 to prevent the linkage pipe 31 from disengaging from the second sleeve 21. The diameter of the baffle 311 is larger than the size of the second mounting hole 212 but not larger than the diameter of the slide groove 211. The second sleeve 21 is slidably disposed at the end of the linkage tube 31. When installing the linkage tube 31, the second sleeves 21 at both ends of the linkage tube 31 are slid towards the middle of the linkage tube 31, so that the length of the linkage tube 31 and the second sleeves 21 is sufficient to enter between the two mounting tubes 19. Then, the second sleeves 21 at both ends are slid in sequence to engage with the first sleeve 20. At this time, the threaded connection has not yet been made. Finally, the linkage tube 31 is rotated to make the first sleeve 20 and the second sleeve 21 threadedly connected and locked. The linkage pipe 31 is connected to the two mounting pipes 19, and the shape of the first mounting hole 201 matches the cross-section of the mounting pipe 19 so that the first sleeve 20 and the mounting pipe 19 can rotate synchronously. The shape of the second mounting hole 212 matches the cross-section of the linkage pipe 31 so that the second sleeve 21 and the linkage pipe 31 can rotate synchronously. After the first sleeve 20 and the second sleeve 21 are connected, the linkage pipe 31 and the two mounting pipes 19 can rotate synchronously. Moreover, the internal threads of the two second sleeves 21 are opposite, and unidirectional rotation can realize the synchronous connection between the first sleeve 20 and the second sleeve 21 on both sides.

[0076] A clearance hole 713 is provided on the substrate 71, which is configured to allow clearance for the mounting tube 19. Both ends of the mounting tube 19 protrude from the mechanism piece 2. The inward protruding part of the mounting tube 19 from the substrate 71 is connected to the linkage tube 31, and the outward protruding part of the mounting tube 19 from the substrate 71 is connected to the rotating rod 161. The front end of the rotating rod 161 is provided with a connecting hole 1611 for inserting the mounting tube 19. The shape of the connecting hole 1611 matches the cross-section of the mounting tube 19. A mounting plate 1612 extending along the length of the mounting tube 19 is also provided at the front end of the rotating rod 161. It is fixedly connected to the mounting plate 1612 and rotates relative to the base plate 71 as the pivot of the rotating rod 161. When the user controls the drive component 16 of one side mechanism piece 2 to move through the control component 15, the rotating rod 161 rotates at the same time. Since the shape of the connecting hole 1611 matches the cross section of the mounting tube 19, it will drive the mounting tube 19 to rotate together. Since the mounting tube 19 and the linkage tube 31 are locked together through the first sleeve 20 and the second sleeve 21, the linkage tube 31 also rotates and drives the mounting tube 19 of the other side mechanism piece 2 to rotate, so that the other side mechanism piece 2 moves synchronously.

[0077] Furthermore, such as Figure 22-24As shown, the transmission linkage assembly includes a first transmission rod 22 and a second transmission rod 23. The first transmission rod 22 is located near the rear end of the mechanism piece 2, and the second transmission rod 23 is located near the front end of the mechanism piece 2. Both the first transmission rod 22 and the second transmission rod 23 are arranged approximately vertically, and their lower ends are rotatably connected to the base 72. The two first rotating rods 161 of the two mechanism pieces 2 on the left and right sides are connected by one of the aforementioned stabilizing tubes 32, and the two second rotating rods 161 are connected by the other stabilizing tube 32. Specifically, since the transmission points of the first transmission rod 22 and the second transmission rod 23 are matched at different locations, their shapes are different. While there are differences, the detachable connection structure is the same as that of the stabilizing tube 32. Taking the first transmission rod 22 as an example, the first transmission rod 22 is roughly in the shape of a long strip plate. An adjustment groove 24 is opened at the upper part of its middle section, and a retaining groove 25 is opened at the lower part of its middle section. The adjustment groove 24 has an arc, and its opening is located at the rear end of the first transmission rod 22. The path of the adjustment groove 24 extends forward and upward from the opening. The retaining groove 25 is a U-shaped groove, and a protrusion 251 is provided near its opening. The groove width at the protrusion 251 decreases. Two connecting posts 26, spaced one above the other, are protruding at both ends of the stabilizing tube 32. The connecting post 26 is formed by reducing inward along its circumference to form a locking part 261. A limiting part 262 is formed on the side of the locking part 261 away from the stabilizing tube 32. The bottom of the connecting post 26 is on the side of the locking part 261 close to the stabilizing tube 32. The diameter of the locking part 261 is smaller than the diameter of the limiting part 262 and the bottom, and the diameter of the locking part 261 matches the width of the adjustment groove 24 and the slot 25. During installation, the stabilizing tube 32 is erected, the connecting post 26 at the top is aligned with the opening of the adjustment groove 24, and the locking part 261 of the connecting post 26 is inserted into the adjustment groove 24. The stabilizing tube 32 is moved along the path of the adjustment groove 24 until the locking part 261 is engaged. Entering the bottom of the adjustment groove 24, the stabilizing tube 32 is rotated so that the locking part 261 of the connecting post 26 located below enters the slot 25. After passing the protrusion 251 of the slot 25, the connecting post 26 is locked, thereby connecting the stabilizing tube 32 with the first transmission rod 22. The distance between the opening of the adjustment groove 24 and the opening of the slot 25 is less than the distance between the two connecting posts 26. In addition, the protrusion 251 in the slot 25 ensures that the first transmission rod 22 will not easily detach from the stabilizing tube 32 after connection. Furthermore, the limiting part 262 of the connecting post 26 and the bottom of the connecting post 26 prevent the connecting post 26 from falling out of the groove.

[0078] The stabilizing tube 32 is a ring-shaped tube with a U-shaped frame structure. Compared with a simple straight tube, the stabilizing tube 32 has an increased width, thereby increasing its overall strength and structural stability, and can also bring greater torque and force capacity during operation.

[0079] Therefore, during packaging, the linkage component 3, seat 4, footstool 5, backrest 27, and two mechanism pieces 2 (fixedly connected with armrests 10) are all packaged separately, which facilitates arrangement, increases space utilization, and reduces packaging and transportation costs. During installation, the mechanical extension device 1 is installed first, and then the seat 4, footstool 5, and backrest 27 are installed on the mechanical extension device 1 to complete the sofa installation. It is simple and quick, and consumers can easily complete the installation.

[0080] The sofa has two states. In the disassembled state, not only can the backrest 27, seat 4, footstool 5 and other sofa components be independently removed from the mechanical extension device 1, but the mechanical extension device 1 can also be disassembled. The two mechanism pieces 2, the two stabilizing tubes 32 and the linkage tube 31 are all independent of each other. At this time, packaging can avoid excessively large useless gaps between the two mechanism pieces 2. In the assembled state, the two stabilizing tubes 32 and the linkage tube 31 are connected to the mechanism piece 2 to form the mechanical extension device 1. The seat 4, footstool 5 and backrest 27 are then installed on the mechanical extension device 1 to form a complete seat, so as to realize the function of the seat.

[0081] This further provides a space-saving packaging method, such as... Figure 25 As shown, this method is applied to the aforementioned seating (sofa), and its steps are as follows:

[0082] S1. Disassemble the seating components: Remove the backrest 27, seat 4, and footstool 5 from the mechanical extension device 1 one by one.

[0083] S2. Disassemble the mechanical extension device: First, remove the linkage tube 31 from between the two mechanism plates 2, then remove the two stabilizing tubes 32 from between the two mechanism plates 2. The two mechanism plates 2 are separated from each other, and the seat is in a disassembled state at this time.

[0084] S3. Spatial arrangement: Place the two mechanism pieces 2 horizontally and stack them with their left and right sides overlapping. Then, stack the stabilizing tube 32 and the linkage tube 31, the seat 4 and the footstool 5 and the backrest 27 on the two mechanism pieces 2 from bottom to top, and package them as a whole.

[0085] Steps S1 and S2 both involve disassembling the seating (sofa). The seating is disassembled in the above order to achieve a disassembled state. Only after the seating components are removed from the mechanical extension device 1 can the mechanical extension device 1 be further disassembled. Ultimately, the backrest 27, seat 4, footstool 5, linkage tube 31, two mechanism plates 2, and two stabilizing tubes 32 are all independent of each other. These independent components are stacked together in the manner of step S3, eliminating the useless space that originally existed between the two mechanism plates 2, greatly improving space utilization, and thus saving packaging and transportation costs.

[0086] The positional relationship after stacking is as follows: Figure 26-28 As shown, at the bottom are two mechanism plates 2 with handrails 10. Both mechanism plates 2 are roughly horizontal but face opposite directions, i.e., the two mechanism plates 2 are close together, while the two handrails 10 are far apart, sandwiching the two mechanism plates 2 in the middle. Since the handrails 10 and mechanism plates 2 are connected by a transition piece 11, there is a gap between them. This gap can be used to place a stabilizing tube 32 or a linkage tube 31. Specifically, with the above arrangement, a straight tubular linkage tube can be inserted between the upper handrail 10 and the connected mechanism plate 2. 31. The transition piece 11 does not obstruct the linkage tube 31. However, if the stabilizing tube 32 is inserted, since the stabilizing tube 32 is a ring tube, it occupies too much area. The transition piece 11 causes obstruction, making it impossible to completely insert the stabilizing tube 32, which will protrude from the side, which is not conducive to packaging and transportation. Therefore, the gap between the upper armrest 10 and another mechanism piece 2 can be used to insert the stabilizing tube 32. The seat 4 is placed above the armrest 10, and a footstool 5 is placed between the seat 4 and the armrest 10. The backrest 27 is placed above the seat 4.

Claims

1. A seating arrangement, characterized in that: The seating includes a mechanical extension device, a seat, a footstool, and a backrest. The backrest is inserted into the rear of the mechanical extension device, the footstool is inserted into the front of the mechanical extension device, and the seat is detachably connected to the mechanical extension device. The mechanical extension device includes two spaced-apart mechanism plates, which are detachably connected by a linkage assembly. The linkage assembly includes two stabilizing tubes and one linkage tube, arranged sequentially from front to back between the two mechanism plates in the order of stabilizing tube, linkage tube, and another stabilizing tube. All three are detachably connected to the mechanism plates on both sides. The seating has two states: a combined state and a disassembled state. In the disassembled state, the backrest, seat, and footstool are detached from the mechanical extension device and are independent of each other. The linkage tube and the two stabilizing tubes are detached from between the two mechanism plates, and the linkage tube, the two stabilizing tubes, and the two mechanism plates are all independent of each other. In the combined state, the two stabilizing tubes are connected to the mechanism plates, and the linkage tube is connected to the two mechanism plates to form the mechanical extension device. The seat, footstool, and backrest are then installed on the mechanical extension device.

2. A space-saving packaging method, characterized in that: The method, when applied to the seating as described in claim 1, comprises the following steps: S1. Disassemble the seating components: Remove the backrest, seat, and footrest from the mechanical extension device one by one; S2. Disassemble the mechanical extension device: First, remove the linkage tube from between the two mechanism plates, then remove the two stabilizing tubes from between the two mechanism plates. The two mechanism plates are separated from each other, and the seat is in the disassembled state at this time. S3. Spatial arrangement: Place the two mechanism pieces horizontally and stack them with their left and right sides partially overlapping. Then, stack the stabilizing tube and linkage tube, seat and footstool, and backrest on the two mechanism pieces from bottom to top, and package them as a whole.

3. The space-saving packaging method according to claim 2, characterized in that: The mechanical extension device is connected to a handrail, which is parallel to and fixedly connected to the mechanism plate. In step S2, the two mechanism plates are separated from each other, but the two mechanism plates and the handrails they are connected to are still connected together. In step S3, the handrails and mechanism plates are arranged as a whole, and the two handrails sandwich the two mechanism plates in the middle.

4. The space-saving packaging method according to claim 3, characterized in that: The handrail and the mechanism plate are fixedly connected by a transition piece, and a corresponding gap is formed between the handrail and the mechanism plate. In step S3, a corresponding gap is also formed between the handrail on one mechanism plate and the other mechanism plate, and the linkage component is placed in these gaps.

5. The space-saving packaging method according to claim 4, characterized in that: The linkage tube is a straight tube, and the stabilizing tube is a ring tube. The handrail on one of the mechanism plates faces upward, and the linkage tube is placed between the mechanism plate and the handrail. The two stabilizing tubes are placed between the other mechanism plate and the handrail.

6. The space-saving packaging method according to claim 2, characterized in that: The backrest, seat, and footstool are all block-shaped, the two mechanism pieces are plate-shaped, and the linkage tube and stabilizing tube are all tubular components. In step S3, the backrest, seat, footstool, and disassembled mechanical extension device are stacked layer by layer, and adjacent components are close to each other.

7. The space-saving packaging method according to claim 5, characterized in that: The seat includes a U-shaped seat frame and a cushion mounted on the seat frame. In the assembled state, the seat frame surrounds and is fixedly connected to the mechanical extension device. In the disassembled state, the seat frame is removed from the mechanical extension device, but the seat frame and the cushion remain fixedly connected. In step S3, the seat is stacked on top of the disassembled mechanical extension device.

8. The space-saving packaging method according to claim 6, characterized in that: The lower surface of the seat cushion has an upward-facing groove, and the seat frame is fixedly connected to the groove.

9. The space-saving packaging method according to claim 5, characterized in that: The footstool includes a footrest and a foot pad. One side of the footrest is detachably connected to the mechanical extension device, and the other side is fixedly connected to the foot pad. In the assembled state, the footrest is connected to the front side of the mechanical extension device, and the foot pad is located in front of the footrest. In step S3, the footrest is stacked on top of the disassembled mechanical extension device and located between the seat and the mechanical extension device.

10. The space-saving packaging method according to claim 2, characterized in that: The mechanism piece includes a back connecting piece located at the rear. In the assembled state, the back connecting piece protrudes upward from the seat and is inserted into the backrest. In step S3, the back connecting piece is placed horizontally along with the mechanism piece, and the backrest is stacked on top of the mechanism piece and located above the seat.

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