Iron frame type modularized seat

Abstract

The utility model relates to an iron frame type modularized seat which comprises a modularized seat cushion, W-shaped iron ribs are welded on the peripheral side of a seat frame of the modularized seat cushion, and binding strips are arranged on the inner wall of the peripheral side of a seat cushion outer sleeve and are detachably connected with the W-shaped iron ribs in a binding mode. The back frame is arranged at the upper end of the rear side of the seat frame, and a plurality of first connecting interfaces are correspondingly formed in the seat frame and the back frame; the armrest frames are attached to the two sides of the seat frame and the back frame, and a plurality of second connecting ports are formed in the seat frame and the armrest frames; the lower end of the armrest frame is lower than the lower end of the seat frame, so that the armrest frame can be supported on the ground, or the lower end of the armrest frame is flush with the lower end of the seat frame, a plurality of independent supporting legs are detachably arranged at the bottom of the seat frame, and a plurality of third connecting ports are correspondingly formed in the independent supporting legs and the seat frame. According to the scheme, the W-shaped iron ribs enhance the structural strength of the seat frame, and the cushion outer sleeve is convenient to detach, wash and replace; the seat cushion, the backrest and the armrests in the seat are detachably and modularly connected, so that the seat is convenient to disassemble and assemble, the loading quantity can be reduced, and the transportation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a modular iron frame seating system. Background Technology

[0002] Existing chairs or sofas made of wood are heavy, making them difficult to move, and their large size leads to high transportation costs after packaging. Meanwhile, one-piece injection-molded structures have limited structural strength, affecting the lifespan of the chairs or sofas. Furthermore, if parts of the seating are damaged, the entire one-piece seating unit needs to be replaced, which is expensive.

[0003] Furthermore, existing seating, such as the Chinese utility model patent with publication number CN221903009U, provides a sofa with a four-spring structure. This includes a sofa body, armrests comprising a solid wood support board with two layers of ultra-soft sponge between them, and multiple mini pocket springs. The sofa back includes a cushion and a backrest frame. The cushion contains multiple independent pocket springs A, and the backrest frame has webbing. The seat cushion contains multiple independent pocket springs B and sponge. The bottom frame of the seat cushion has positioning lines and multiple serpentine springs, with both ends of the serpentine springs fixed to the bottom frame via spring clips. This utility model uses different spring structures for different parts of the same sofa model, based on usage frequency and pressure conditions. This different design for different parts of the same sofa not only reduces production costs but also ensures that each part is independent, does not interfere with others, provides strong support, and is durable.

[0004] The sofa in the above solution uses a wooden frame with added shelves to achieve a frame structure, which is not only not environmentally friendly, but also contains glue components in the shelves, making it impossible to remove formaldehyde.

[0005] Furthermore, to improve comfort, existing seating (sofas, lounge chairs, office chairs, and car seats, etc.) often incorporate elastic components in their frames for rebound and shock absorption. Hooks connected to one end of the spring assembly hang directly on the cross tube, while a fastener connected to the other end of the spring assembly is attached to the cross tube using nails. During use, these two connection methods result in the hooks or fasteners lacking a fixed anchor point, making them prone to wobbling and rubbing against the cross tube, causing noise and discomfort. Moreover, these connection methods are unstable and prone to detaching during use.

[0006] Furthermore, the fabric covers in existing seating are locked in place, making replacement very troublesome.

[0007] In addition to single seating, side tables are usually provided so that users can place items. Side tables take up space and increase configuration costs. Utility Model Content

[0008] To address the aforementioned problems, the purpose of this utility model is to provide a modular iron-framed seating system. The seat cushion, backrest, and armrests of this system are detachable and modularly connected, facilitating assembly and disassembly, reducing the amount of furniture required for loading, and improving transportation costs. The seat cushion, backrest, and armrests are available in various styles to suit different user needs, allowing for easy assembly and maintenance. Furthermore, the iron pipe frame replaces the wooden seat, making it lighter and more environmentally friendly. The frame also provides storage space for the backrest and armrests, further enhancing storage capacity. Effects: In addition, the plastic snap fasteners can wrap around and tightly clamp the iron pipes, effectively reducing friction between the snap fasteners and the crossbeam caused by shaking, thus reducing abnormal noise. At the same time, the two sides of the circular serpentine springs are connected to the hollow oval holes, and multiple circular serpentine springs are connected by a plastic-coated wire frame, all of which can improve the elasticity of the seat cushion and make the seating more comfortable. The fabric cover can be detached and connected to each component, making it easy to disassemble and wash. Furthermore, the armrests are hinged to the tabletop, allowing the seat armrests to replace side tables, reducing the configuration cost of other tables.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A modular iron-framed seating arrangement includes a modular seat cushion, and modular armrests and a modular backrest that are detachably and replaceably mounted on the modular seat cushion. The seat frame of the modular seat cushion and the back frame of the modular backrest are made of iron pipes. The modular armrests are one of the following: iron-framed armrests, solid wood armrests, and upholstered armrests. Each modular armrest includes two armrest frames. When the modular armrests are iron-framed or upholstered, the armrest frames are made of iron pipes, and a foldable tabletop is mounted on at least one side of the armrest frame. When the modular armrests are solid wood, rattan is installed on the armrest frames. The seat frame, back frame, and tabletop of the modular seating arrangement are fitted with indoor foam. When the modular armrests are iron-framed or upholstered, the armrest frames are fitted with indoor foam, and the indoor foam can be detached and replaced with external drainable foam. Its distinguishing feature is that:

[0011] The seat frame is welded with W-shaped iron ribs on its periphery, and a seat cushion cover is provided on the outer side of the seat frame. The inner wall of the seat cushion cover is provided with tie strips that are detachably connected to the W-shaped iron ribs. The back frame is located at the upper rear end of the seat frame, and the seat frame and back frame are provided with multiple first connection interfaces. The armrest frame is attached to both sides of the seat frame and back frame, and the seat frame and armrest frame should be provided with multiple second connection interfaces. The lower end of the armrest frame is lower than the lower end of the seat frame, so that the armrest frame can be supported on the ground, or the lower end of the armrest frame is flush with the lower end of the seat frame. The bottom of the seat frame is provided with multiple independent support legs, and the independent support legs are provided with multiple third connection interfaces corresponding to the seat frame.

[0012] Preferably, the seat frame is a rectangular iron frame with a storage space inside. The frame includes two symmetrically arranged side support iron frames, and two upper support iron pipes and two lower support iron pipes welded between the two side support iron frames. A mounting platform is welded to the upper support iron pipes and side support iron frames on the upper rear side of the seat frame. Diagonal iron pipes are welded to both sides of the side support iron frames, and the diagonal iron pipes and side support iron frames are provided with the third connecting interface for connecting independent support legs. The first, second, and third connecting interfaces on both sides of the seat frame are symmetrically arranged, allowing for the replacement of various armrests and backrests. A connecting iron pipe is welded to the upper inner side of the seat frame between the two side support iron frames, and the connecting iron pipe is arranged horizontally with the upper support iron pipes. Multiple fixing holes are symmetrically provided on the upper and lower surfaces of the connecting iron pipes and upper support iron pipes for installing plastic snap fasteners.

[0013] Preferably, the plastic snap fastener has protrusions on its inner wall and upper and lower surfaces, which extend into the fixing holes to secure the plastic snap fastener to the iron pipe. Two elliptical blocks are provided on the side of the plastic snap fastener, each with a female and male tenon that are radially locked to it. After the two elliptical blocks are engaged, they form hollow elliptical holes. Circular serpentine springs are hung on the hollow elliptical holes on both sides to connect the plastic snap fasteners. The plastic snap fastener is locked to the seat frame through the cooperation of the protrusions and the fixing holes, which is suitable for preventing noise caused by friction between the plastic snap fastener and the seat frame when the circular serpentine spring moves up and down repeatedly. A U-shaped connecting block is provided at the top of the plastic snap fastener for detachable snap-fit ​​fixing to the seat cushion cover.

[0014] Preferably, the lower end face of the multiple circular serpentine springs is provided with a plastic-coated wire frame, which is used to connect the multiple circular serpentine springs so that they are subjected to force evenly as a whole, thus achieving a high resilience effect.

[0015] Preferably, the plastic-coated wire frame includes PVC fixing frame strips and PVC fixing straight strips, which are fixed to multiple circular serpentine springs by fixing sleeves.

[0016] Preferably, a connecting frame is fixedly provided on the upper part of the back frame, and a support column is hinged on the connecting frame. The support column is obliquely arranged between the back frame and the back cover. The tilt angle of the back frame can be adjusted by an angle adjuster between the back frame and the seat frame. When the modular backrest is tilted down, the support column can be flipped and supported on the ground under the action of external force.

[0017] Preferably, the upper end of the mounting platform is provided with multiple first connection interfaces; the bottom of the back frame is mounted on the mounting platform and is provided with multiple first connection interfaces accordingly, and the back frame is located on the upper rear side of the seat frame; there are two angle adjusters, which are symmetrically arranged on both sides of the mounting platform. The angle adjuster includes a main body fixed to the side end of the mounting platform, and a seat frame connecting plate and a back frame connecting plate arranged on both sides of the main body. The seat frame connecting plate is fixed to the side end of the mounting platform and locked to the main body. The back frame connecting plate is fixedly connected to the side end of the back frame and can rotate relative to the main body to adjust the tilt angle of the back frame.

[0018] Preferably, the modular handrail can be detached and replaced with one of the following through the second connection interface on the seat frame: a metal frame handrail, a solid wood handrail, and a padded handrail; the metal frame handrail includes a metal frame floor handrail and a metal semi-floor handrail, the lower ends of the metal frame floor handrail and the padded handrail are lower than the lower end of the metal frame seat frame, so that the metal frame handrail frame can be supported on the ground; the lower ends of the metal semi-floor handrail and the solid wood handrail are flush with the lower end of the metal frame seat frame, and the lower end of the metal frame seat frame is supported on the ground by multiple independent legs;

[0019] When the modular handrail is an iron frame handrail or a padded handrail, two vertical beams are longitudinally welded inside the handrail frame. The two vertical beams are respectively hinged to the tabletop. The hinge includes a short connecting section and a long connecting section that are hinged to each other. One connecting section is fixedly connected to the vertical beam, and the other connecting section is fixedly connected to the tabletop. The short connecting section and the long connecting section are constructed with U-shaped connecting grooves. Their connecting grooves are arranged opposite to each other, and the adapter frame of the short connecting section is located on the upper outer side of the long connecting section. The two are rotatably connected to each other by a first connecting pin.

[0020] The long connecting section has longitudinally spaced limiting holes on both sides. The lower part of the short connecting section is provided with a second connecting pin, and the limiting holes on both sides are provided with a third connecting pin. The two ends of the second connecting pin and the two ends of the third connecting pin are respectively connected with limiting plates. When the short connecting section and the long connecting section rotate relative to each other, they drive the limiting plates to move, thereby pulling the third connecting pin to move longitudinally on the limiting holes. The connecting groove of the long connecting section is provided with a locking member, which is configured to lock the third connecting pin on the limiting holes when the short connecting section and the long connecting section are at a right angle.

[0021] Preferably, the locking component includes a U-shaped locking block, a fourth connecting pin, and a torsion spring. The fourth connecting pin passes through the long connecting section and the U-shaped locking block and is located outside the limiting hole. The torsion spring is sleeved on the fourth connecting pin, and the U-shaped locking block is located outside the torsion spring. The two torsion arms of the torsion spring abut against the upper and lower sides of the inner wall of the U-shaped locking block. When the table is flipped to a horizontal position, the third connecting pin moves to the upper part of the limiting hole, and the upper end of the U-shaped locking block can be supported on the lower end of the third connecting pin, thereby making the third connecting pin and the limiting plate locked.

[0022] The long connecting section has receiving openings on both sides of its outer end that cooperate with the second connecting pin; when the short connecting section is fixed on the vertical beam, the vertical beam is provided with an arc-shaped buffer groove, and when the table is flipped to a vertical state, the U-shaped locking block corresponds to the arc-shaped buffer groove.

[0023] Preferably, the independent support leg includes a support body and a connecting post formed on the upper end of the support body, and the connecting post is provided with the plurality of third connection interfaces.

[0024] Alternatively, the independent support leg may include a connecting piece and a support body welded to the bottom of the connecting piece; the third connection interface on the seat frame is located at the bottom of the seat frame, and the connecting piece has multiple third connection interfaces that are connected and fixed to the bottom of the seat frame;

[0025] The seat cushion cover on the outside of the seat frame can be detached and tied to the W-shaped iron bar. The backrest cover is a set of detachable and replaceable zippered fixtures on the back frame. The armrest cover and table cover are respectively set of detachable and replaceable zippered fixtures on the armrest frame and table.

[0026] The present invention adopts the above technical solution and has the following beneficial effects:

[0027] ① The seat cushion, backrest and armrests of the seating are detachable and modularly connected, which is convenient for disassembly and assembly, reduces the amount of container load, facilitates transportation, and reduces transportation costs;

[0028] ② The seat cushions, backrests and armrests in the seating are available in a variety of styles, which can be easily assembled and maintained according to user needs;

[0029] ③ The iron pipe frame replaces the wooden seat, which is relatively lightweight and more environmentally friendly. The frame can also form storage space to store backrests, armrests and other components, improving storage efficiency.

[0030] ④ The plastic loop fastener can wrap around and tightly clamp the iron pipe, effectively reducing the friction between the plastic loop fastener and the crossbeam caused by shaking, and reducing the occurrence of abnormal noise;

[0031] ⑤ The two sides of the circular serpentine spring are connected to the hollow elliptical hole, which has a good rebound effect; multiple circular serpentine springs are connected by a plastic-coated wire frame, which makes the circular serpentine springs evenly stressed, thus achieving a high overall rebound effect and making the user more comfortable to sit on.

[0032] ⑥ The armrests can be hinged to tabletops, allowing the seat armrests to replace side tables and reduce the configuration cost of other tables;

[0033] ⑦ The fabric cover can be detached and connected to each part, making it easy to assemble and disassemble and wash. The seat cover cannot be a set zipper cover, so it is tied to the iron seat frame with W-shaped iron strips, which is also very convenient.

[0034] ⑧ The backrest can be reclined flat for users to lie down and sleep. The iron back frame has support columns on the back side, which can be used to support the backrest after it is reclined, making it very safe. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of the first type of modular iron-frame seating.

[0036] Figure 2 This is an exploded structural diagram of a modular iron-frame seating unit.

[0037] Figure 3 for Figure 1 A schematic diagram of the reclining backrest of the China Railway frame modular seating.

[0038] Figure 4 This is a schematic diagram of the backrest reclining in the second type of modular iron frame seating.

[0039] Figure 5 This is a three-dimensional structural diagram of the third type of modular iron frame seating.

[0040] Figure 6 This is a schematic diagram of the three-dimensional structure of the seat frame.

[0041] Figure 7 This is a schematic diagram of the three-dimensional structure of the angle adjuster.

[0042] Figure 8 This is a three-dimensional structural diagram of a plastic snap fastener.

[0043] Figure 9 This is a three-dimensional structural diagram of a plastic snap fastener from another perspective.

[0044] Figure 10 This is a schematic diagram of the three-dimensional structure of a plastic-coated wire frame.

[0045] Figure 11 This is a schematic diagram of the binding of a plastic-coated wire frame and a circular serpentine spring.

[0046] Figure 12 This is a three-dimensional structural diagram of a metal frame handrail.

[0047] Figure 13 This is a diagram showing the opening of the tabletop on the metal frame armrest.

[0048] Figure 14 This is a schematic diagram of the three-dimensional structure of a semi-metallic handrail that does not touch the ground.

[0049] Figure 15 This is a diagram illustrating the opening of the tabletop on the semi-remote armrest.

[0050] Figure 16 This is a schematic diagram of the three-dimensional structure of the hinge.

[0051] Figure 17 This is a schematic diagram of the side structure of the hinge.

[0052] Figure 18 A schematic diagram showing the hinge open.

[0053] Figure 19 This is a schematic diagram of the three-dimensional structure of the first type of independent support leg.

[0054] Figure 20 This is a schematic diagram of the three-dimensional structure of the second type of independent support leg.

[0055] Figure 21 A diagram illustrating the placement of pockets on a tabletop. Detailed Implementation

[0056] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] like Figures 1-21 The illustrated modular iron-frame seating includes a modular seat cushion, and modular armrests and a modular backrest that are detachable and replaceable on the modular seat cushion. The seat frame 1 of the modular seat cushion and the back frame 2 of the modular backrest are made of iron pipes. The modular armrests are one of the following: iron-frame armrests, solid wood armrests, and upholstered armrests. Each modular armrest includes two armrest frames 3. When the modular armrests are iron-frame or upholstered, the armrest frames 3 are made of iron pipes, and a foldable tabletop 4 is installed on at least one side of the armrest frame 3. When the modular armrests are solid wood, rattan woven fabric 5 is installed on the armrest frames 3. Indoor foam is fitted onto the seat frame 1, back frame 2, and tabletop 4 of the modular seating. When the modular armrests are iron-frame or upholstered, indoor foam is fitted onto the armrest frames 3. The indoor foam can be detached and replaced with an external drainable foam.

[0062] The modular seat cushion is fixedly equipped with detachable and interchangeable modular armrests and detachable and interchangeable modular backrests that can be tilted and laid flat, or it may have a detachable and interchangeable support frame or detachable and interchangeable independent support legs. The modular armrests include all common types such as iron frame armrests, solid wood armrests, and soft-padded armrests. A foldable bracket and table are installed on any side of the modular armrest. The fabric covers of each component of the modular seat can be removed and interchanged. The indoor sponge installed on the seat frame, backrest, armrests, table and other components of the modular seat can be removed and interchanged with external water-draining sponge or rattan.

[0063] The seat frame 1 is welded with W-shaped iron ribs 6 around its periphery. A seat cushion cover is provided on the outer side of the seat frame 1. Ties are provided on the inner wall of the seat cushion cover and are detachably connected to the W-shaped iron ribs 6. The back frame 2 is mounted on the upper rear side of the seat frame 1. The seat frame 1 and the back frame 2 are provided with multiple first connection interfaces 7. The armrest frame 3 is attached to both sides of the seat frame 1 and the back frame 2. The seat frame 1 and the armrest frame 3 should be provided with multiple second connection interfaces 8. The lower end of the armrest frame 3 is lower than the lower end of the seat frame 1, so that the armrest frame 3 can be supported on the ground, or the lower end of the armrest frame 3 is flush with the lower end of the seat frame 1. The bottom of the seat frame 1 is provided with multiple independent support legs 9, and the independent support legs 9 are provided with multiple third connection interfaces 10 corresponding to the seat frame 1.

[0064] In the above technical solution, the W-shaped iron ribs not only strengthen the structural strength of the seat frame but also form a detachable connection with the seat cushion cover, facilitating disassembly, washing, and replacement. The seat cushion, backrest, and armrests are detachable and modularly connected, facilitating assembly and disassembly, reducing the amount of material to be packed, and improving transportation costs. The seat cushion, backrest, and armrests are available in various styles, allowing for easy assembly and maintenance according to user needs. The iron pipe frame replaces the wooden seat, making it lighter and more environmentally friendly. Furthermore, the frame can create storage space for backrests, armrests, and other components, improving storage efficiency.

[0065] like Figure 2 , 6 As shown in Figure 11, the seat frame 1 is a rectangular iron frame, forming a storage space 100 within the frame. This frame includes two symmetrically arranged side support iron frames 11, and two upper support iron pipes 12 and two lower support iron pipes 13 welded between the two side support iron frames 11. A mounting platform 14 is welded to the upper support iron pipes 12 and the side support iron frames 11 on the upper rear side of the seat frame 1. Inclined iron pipes 15 are welded to both sides of the side support iron frames 11, and the inclined iron pipes 15 and the side support iron frames 11 are provided with connecting... The third connection interface 10 is connected to the independent support leg 9; the first connection interface 7, the second connection interface 8 and the third connection interface 10 on both sides of the seat frame 1 are symmetrically arranged, and various armrests and backrests can be replaced; a connecting iron pipe 16 is welded between the two side support iron frames 11 on the upper inner side of the seat frame 1, and the connecting iron pipe 16 and the upper support iron pipe 12 are arranged at the same horizontal level; multiple fixing holes are symmetrically provided on the upper and lower surfaces of the connecting iron pipe 16 and the upper support iron pipe 12 for installing plastic clips 17.

[0066] The seat frame is fixed with all the above-mentioned interchangeable armrest support frames and independent leg support frames. The four corners of the seat frame have welded diagonal iron pipes and connection interfaces with holes for installing independent support legs. The seat frame includes two symmetrically arranged side support iron frame armrests, which can be replaced with independent support legs. The screw holes for installing various armrests and backrests on both sides of the seat frame are uniform, allowing for interchangeability of any style of armrests and backrests. The four corners of the seat frame have welded diagonal iron pipes and holes for installing independent support legs, allowing for the disassembly and interchangeability of various styles of legs. In this design, the diagonal iron pipes not only improve the structural strength of the seat frame, but also facilitate the installation of the first type of independent support legs.

[0067] like Figures 8-11 As shown, the plastic snap fastener 17 has protrusions 18 on its inner upper and lower surfaces. The protrusions 18 extend into the fixing holes to fix the plastic snap fastener 17 onto the iron pipe. The side end of the plastic snap fastener 17 has two elliptical blocks 19. The two elliptical blocks 19 are fitted with female and male tenons that are radially locked to them. After the two elliptical blocks 19 are fitted together, they form hollow elliptical holes 20. Circular serpentine springs 21 are hung on the hollow elliptical holes 20 on both sides to connect the plastic snap fasteners 17 on both sides. The plastic snap fastener 17 is locked onto the seat frame 1 by the cooperation of the protrusions 18 and the fixing holes, which is suitable for avoiding noise caused by friction between the plastic snap fastener 17 and the seat frame 1 when the circular serpentine springs 21 move up and down repeatedly. The top of the plastic snap fastener 17 has a U-shaped connecting block 22 for detachable snap-fit ​​fixation with the seat cover. Multiple circular serpentine springs 21 have plastic-coated wire frames on their lower ends to connect them, ensuring even stress distribution and high resilience. The plastic-coated wire frames include PVC fixing strips 23 and PVC fixing straight strips 24, such as... Figure 11 The PVC fixing frame strip 23 and PVC fixing straight strip 24 are bundled and fixed to multiple circular serpentine springs 21 by fixing sleeves 200. In this design, the plastic snap fastener can wrap around and tightly clamp the iron pipe to the plastic snap fastener, effectively reducing the friction caused by shaking between the plastic snap fastener and the crossbeam, and reducing the occurrence of abnormal noise; the two sides of the circular serpentine springs are connected to the hollow elliptical holes, which has a good up-and-down rebound effect; multiple circular serpentine springs are connected by a plastic-coated wire frame, so that the circular serpentine springs are evenly stressed, thereby achieving a high overall rebound effect and making the user more comfortable to sit on.

[0068] The seat frame is fixed to the iron seat frame using plastic U-shaped buckles, and the hollow oval side is used to hang the circular serpentine springs. The fixing holes of the circular serpentine springs are matched with the protrusions of the circular serpentine springs to prevent friction and noise when the human body repeatedly sits up and down. The seat frame and the circular serpentine springs are connected by plastic U-shaped buckles at both ends to achieve a more comfortable sitting experience. The top U-shaped plastic U-shaped buckle is fixed by a buckle from the seat cushion cover, which can be removed. The elastic component includes multiple circular serpentine springs. The circular serpentine springs are fixed by two plastic-coated wire frames on the top and bottom, so that the circular serpentine springs on the seat frame are evenly supported, achieving a high rebound effect and never deforming.

[0069] like Figure 3 , 4 As shown in Figure 7, a connecting frame 50 is fixedly provided on the upper part of the back frame 2, and a support column 51 is hinged on the connecting frame 50. The support column 51 is obliquely arranged between the back frame 2 and the back cover. The tilt angle of the back frame 2 and the seat frame 1 is adjusted by an angle adjuster 25. When the modular backrest is tilted down, the support column 51 can be flipped and supported on the ground under the action of external force. The upper end of the mounting platform 14 is provided with multiple first connection interfaces 7; the bottom of the back frame 2 is mounted on the mounting platform 14 and is provided with multiple first connection interfaces 7 accordingly. The back frame 2 is located on the upper rear side of the seat frame 1; there are two angle adjusters 25, which are symmetrically arranged on both sides of the mounting platform 14. The angle adjuster 25 includes a main body 26 fixed to the side end of the mounting platform 14, and a seat frame connecting plate 27 and a back frame connecting plate 28 arranged on both sides of the main body 26. The seat frame connecting plate 27 is fixed to the side end of the mounting platform 14 and locked to the main body 26. The back frame connecting plate 28 is fixedly connected to the side end of the back frame 2 and can rotate relative to the main body 26 to adjust the tilt angle of the back frame 2.

[0070] In the above technical solution, the modular backrest can be adjusted to recline and lie flat. The backrest can be fixed and its tilt angle can be adjusted via an angle adjuster. A connecting iron pipe is welded to the upper inner side of the seat frame between two side support iron frames. The connecting iron pipe and the upper support iron pipe are arranged at the same horizontal level. Multiple fixing holes are located on the front and rear ends of the connecting iron pipe, and the backrest can be fixed and its tilt angle adjusted via the angle adjuster. Various styles of backrests can be disassembled and interchanged. When the backrest is laid flat, it can be used for sleeping. The user opens the zipper on the backrest cover to fold out the support column, which stands upright on the ground, thus supporting the modular backrest and ensuring the safety of sleeping in the seat.

[0071] like Figures 12-18 as well as Figure 1 As shown, the modular handrail can be detached and replaced with one of the following through the second connection interface 8 on the seat frame 1: iron frame handrail, solid wood handrail, and upholstered handrail; the iron frame handrail includes a ground-level iron frame handrail and a semi-ground-level iron handrail. The lower ends of the ground-level iron frame handrail and the upholstered handrail are lower than the lower end of the iron frame seat frame 1, so that the iron frame handrail frame 3 can be supported on the ground; the lower ends of the semi-ground-level iron handrail and the solid wood handrail are flush with the lower end of the iron frame seat frame 1, and the lower end of the iron frame seat frame 1 is supported on the ground by multiple independent legs 9;

[0072] When the modular handrail is an iron frame handrail or a soft-padded handrail, two vertical beams 29 are longitudinally welded inside the handrail frame 3. The two vertical beams 29 are respectively hinged to the tabletop 4 via hinges 30. The hinge 30 includes a short connecting section and a long connecting section that are hinged to each other. One connecting section is fixedly connected to the vertical beam 29, and the other connecting section is fixedly connected to the tabletop 4. The short connecting section and the long connecting section are constructed with U-shaped connecting grooves. Their connecting grooves are arranged opposite to each other, and the adapter frame of the short connecting section is set on the upper outer side of the long connecting section. The two can be rotatably connected relative to each other through the first connecting pin 31.

[0073] The long connecting section has longitudinally spaced limiting holes 32 on both sides. The lower part of the short connecting section is provided with a second connecting pin 33, and the limiting holes 32 on both sides are provided with a third connecting pin 34. The two ends of the second connecting pin 33 and the two ends of the third connecting pin 34 are respectively connected with limiting pieces 35. When the short connecting section and the long connecting section rotate relative to each other, they drive the limiting pieces 35 to move, thereby pulling the third connecting pin 34 to move longitudinally on the limiting holes 32. The connecting groove of the long connecting section is provided with a locking member, which is configured to lock the third connecting pin 34 on the limiting holes 32 when the short connecting section and the long connecting section are at a right angle.

[0074] The locking component includes a U-shaped locking block 36, a fourth connecting pin 37, and a torsion spring. The fourth connecting pin 37 passes through the long connecting section and the U-shaped locking block 36 and is located outside the limiting hole 32. The torsion spring is sleeved on the fourth connecting pin 37. The U-shaped locking block 36 is located outside the torsion spring, and the two torsion arms of the torsion spring abut against the upper and lower sides of the inner wall of the U-shaped locking block 36. When the table 4 is flipped to a horizontal state, the third connecting pin 34 moves to the upper part of the limiting hole 32, and the upper end of the U-shaped locking block 36 can be supported on the lower end of the third connecting pin 34, so that the third connecting pin 34 and the limiting piece 35 are in a locked state.

[0075] The long connecting section has receiving openings 38 on both sides of its outer end that cooperate with the second connecting pin 33; when the short connecting section is fixed on the vertical beam 29, the vertical beam 29 is provided with an arc-shaped buffer groove 39, the table 4 is flipped to a vertical state, and the U-shaped locking block 36 corresponds to the arc-shaped buffer groove 39.

[0076] In the above technical solution, when the short connecting section and the long connecting section are unfolded relative to each other, the linkage limiting plate drives the third connecting pin to move within the limiting hole. When the third connecting pin moves a certain distance within the limiting hole, the locking component locks the third connecting pin, thereby keeping the tabletop in a horizontal state, allowing items to be placed or used for office work. The locking component includes a U-shaped locking block 14, a fourth connecting pin 15, and a torsion spring. When the third connecting pin moves upward, it pushes open the upper part of the U-shaped locking block and moves to the upper end of the limiting hole. Under the action of the torsion spring, the U-shaped locking block resets and presses against the lower end of the third connecting pin, thus keeping the third connecting pin at the upper end of the limiting hole. This keeps the limiting plate and the second connecting pin in a locked state, stabilizing the tabletop in a horizontal state. The multiple hinge design improves the load-bearing capacity of the tabletop; in this case, the two hinge designs allow the tabletop to bear a load of approximately 50KG, providing high load-bearing capacity and meeting daily use requirements. To unlock, simply press the outer side of the U-shaped locking block; the inner end of the U-shaped locking block will lift, the third connecting pin will fall, and the tabletop will return to its original position. If the short connecting section is fixed to the vertical beam, the third connecting pin will move laterally in the limiting hole. If the long connecting section is fixed to the vertical beam, the third connecting pin will move longitudinally in the limiting hole. The design of the receiving opening allows the second connecting pin to be accommodated in the receiving opening of the long connecting section when the long and short connecting sections are closed, thus making the tabletop closer to the armrest in its initial vertical state, resulting in a more aesthetically pleasing appearance. Furthermore, the arc-shaped buffer groove reduces the noise generated by the collision between the U-shaped locking block and the vertical beam when the tabletop is flipped to a vertical position, better protecting the U-shaped locking block.

[0077] like Figures 19-20 As shown, the independent support leg 9 includes a support body 40 and a connecting post 41 formed on the upper end of the support body 40, with the connecting post 41 having the plurality of third connection interfaces 10; or the independent support leg 9 includes a connecting piece 42 and a support body 40 welded below the connecting piece 42; the third connection interfaces 10 on the seat frame 1 are located at the bottom of the seat frame 1, and the connecting piece 42 has the plurality of third connection interfaces 10 connected and fixed to the bottom of the seat frame 1. In this solution, the independent support leg is detachable, easy to assemble and disassemble, and convenient for storage and transportation. It should be noted here that... Figure 1 and Figure 2 As shown in the comparison, Figure 2 The middle part indicates that the frame can be fitted with the first type of independent support leg, compared to... Figure 1 Whether it is installed depends on the support effect required by the user.

[0078] The seat cushion cover on the outside of the seat frame 1 can be detachably tied to the W-shaped iron bar 6. The backrest cover is detachably replaceable and set on the back frame 2 using a set zipper. The armrest cover and table 4 cover are detachably replaceable and set on the armrest frame 3 and table 4 respectively using a set zipper.

[0079] Figure 21 In the middle, multiple pockets 300 can be set on the outer surface of the table.

[0080] The combination of armrest frame, seat frame, back frame and legs shown in this embodiment does not represent all possible combinations of modular iron frame seating; there are many other possible combinations.

[0081] like Figure 2 As shown, the first connection interface on the back frame is connected to the first connection interface in the rear row on the seat frame. The other first connection interfaces on the seat frame are intended to be used to connect other types of backrests, making it widely applicable.

[0082] In this specific embodiment, addressing the problems existing in existing seating, the above solution modularly connects the seat cushion, backrest, and armrests in a detachable manner, facilitating assembly and disassembly, reducing the amount of furniture to be packed, and improving transportation costs. Furthermore, the seat cushion, backrest, and armrests offer a variety of styles to choose from, allowing for easy assembly and maintenance according to user needs. The iron pipe frame replaces the wooden seat, making it lighter and more environmentally friendly, and the frame also provides storage space for backrests and armrests, improving storage efficiency. Plastic snap fasteners can secure the iron pipes. The plastic loop fasteners are tightly secured to the crossbeams, effectively reducing friction caused by wobbling and minimizing noise. The circular serpentine springs are connected to hollow oval holes on both sides, providing excellent vertical rebound. Multiple circular serpentine springs are connected by a plastic-coated wire frame, ensuring even stress distribution and high overall resilience for enhanced user comfort. The armrests can be hinged to tabletops, allowing them to replace side tables and reducing the cost of other table furnishings. The fabric cover is detachable and easily attaches to each component, facilitating disassembly and washing.

[0083] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An iron stand type modular seating furniture comprising a modular seat cushion, and a modular armrest and a modular backrest which are detachably and replaceably provided on the modular seat cushion, wherein, The seat frame (1) of the modular seat cushion and the back frame (2) of the modular backrest are made of iron pipes, the modular armrest is one of an iron frame armrest, a solid wood armrest and a soft bag armrest, and the modular armrest comprises two armrest frames (3); when the modular armrest is an iron frame armrest or a soft bag armrest, the armrest frame (3) is made of an iron pipe, and at least one side of the armrest frame (3) is provided with a foldable table board (4); when the modular armrest is a solid wood armrest, rattan (5) is arranged on the armrest frame (3); indoor sponges are arranged on the seat frame (1), the back frame (2) and the table board (4) of the modular seat, indoor sponges are arranged on the armrest frame (3) when the modular armrest is an iron frame armrest or a soft bag armrest, and the indoor sponges can be replaced by outdoor sponges; the seat frame (1) is provided with a W-shaped iron strip (6) on the side, the seat frame (1) is provided with a seat cushion cover on the outside, the W-shaped iron strip (6) is bundled with the inner wall of the seat cushion cover on the side by means of a binding strip, the back frame (2) is arranged on the upper end of the rear side of the seat frame (1), the seat frame (1) and the back frame (2) are provided with a plurality of first connecting interfaces (7), the armrest frame (3) is arranged on the two sides of the seat frame (1) and the back frame (2), the seat frame (1) and the armrest frame (3) are provided with a plurality of second connecting interfaces (8), the lower end of the armrest frame (3) is lower than the lower end of the seat frame (1), so that the armrest frame (3) can be supported on the ground, or the lower end of the armrest frame (3) is flush with the lower end of the seat frame (1), and a plurality of independent supporting legs (9) are detachably arranged on the bottom of the seat frame (1), and the independent supporting legs (9) and the seat frame (1) are provided with a plurality of third connecting interfaces (10). The seat frame (1) is a rectangular iron frame type frame body, and a receiving space (100) is formed in the frame body; the frame body comprises two symmetrical side supporting iron frames (11) and two upper supporting iron pipes (12) and two lower supporting iron pipes (13) welded between the two side supporting iron frames (11), and an installation table (14) is welded on the upper end of the rear side of the seat frame (1) and the upper supporting iron pipes (12) and the side supporting iron frames (11); the two sides of the side supporting iron frame (11) are welded with inclined iron pipes (15), and the inclined iron pipes (15) and the side supporting iron frames (11) are provided with the third connecting interfaces (10) for connecting the independent supporting legs (9); the first connecting interfaces (7), the second connecting interfaces (8) and the third connecting interfaces (10) on the two sides of the seat frame (1) are symmetrically arranged, and a plurality of armrests and backrests can be alternatively installed; a connecting iron pipe (16) is welded between the two side supporting iron frames (11) on the inner side of the upper part of the seat frame (1), and the connecting iron pipe (16) is arranged in the same horizontal plane as the upper supporting iron pipe (12); a plurality of fixing holes are symmetrically arranged on the upper and lower surfaces of the connecting iron pipe (16) and the upper supporting iron pipe (12) for installing plastic back type buckles (17).

2. An iron-framed modular seating according to claim 1, characterized in that: ​ 3. An iron-framed modular seating according to claim 2, characterized in that: The inner wall of the plastic back type buckle (17) is provided with a protrusion (18) on the upper and lower surfaces, the protrusion (18) extends into the fixing hole to make the plastic back type buckle (17) clamped and fixed on the iron pipe; the side end of the plastic back type buckle (17) is provided with two oval blocks (19), the two oval blocks (19) are provided with a female tenon and a male tenon which are radially locked, the two oval blocks (19) are clamped to form a hollow oval hole (20), and the two hollow oval holes (20) are hung with a circular snake spring (21) for connecting the two plastic back type buckles (17); the plastic back type buckle (17) is locked on the seat frame (1) through the cooperation of the protrusion (18) and the fixing hole, and is suitable for avoiding sound caused by friction between the plastic back type buckle (17) and the seat frame (1) when the circular snake spring (21) repeatedly moves up and down; the top of the plastic back type buckle (17) is provided with a U-shaped connecting block (22) for detachable buckle type fixing with the cushion cover.

4. An iron-framed modular seating according to claim 3, characterized in that: The lower end surface of the plurality of circular snake springs (21) is provided with a plastic-coated iron wire frame for connecting the plurality of circular snake springs (21) to make them uniformly stressed as a whole, and the plastic-coated iron wire frame plays a high rebound role.

5. An iron-framed modular seating according to claim 4, characterized in that: The plastic-coated iron wire frame includes a PVC fixed frame strip (23) and a PVC fixed straight strip (24), and the PVC fixed frame strip (23) and the PVC fixed straight strip (24) are fixed between the plurality of circular snake springs (21) through a fixing sleeve.

6. The modular chair of claim 2, wherein: The upper part of the back frame (2) is fixedly provided with a connecting frame (50), the connecting frame (50) is hingedly provided with a supporting column (51), and the supporting column (51) is obliquely arranged between the back frame (2) and the backrest cover; the inclination angle of the back frame (2) is adjusted through the angle adjuster (25) between the back frame (2) and the seat frame (1), and when the modular backrest is tilted and laid flat, the supporting column (51) can be turned over and supported on the ground under the action of external force.

7. An iron-framed modular seating according to claim 6, characterized in that: The upper end of the mounting table (14) is provided with a plurality of first connection interfaces (7); the bottom of the back frame (2) is arranged on the mounting table (14) and is correspondingly provided with a plurality of first connection interfaces (7), and the back frame (2) is arranged on the rear side of the upper end of the seat frame (1); the angle adjuster (25) has two and is symmetrically arranged on the two sides of the mounting table (14), the angle adjuster (25) includes a main body portion (26) fixed on the side end of the mounting table (14), and a seat frame connecting plate (27) and a back frame connecting plate (28) arranged on the two sides of the main body portion (26), the seat frame connecting plate (27) is fixed on the side end of the mounting table (14) and is locked with the main body portion (26), and the back frame connecting plate (28) is fixedly connected with the side end of the back frame (2) and can rotate relative to the main body portion (26) to adjust the inclination angle of the back frame (2).

8. The modular chair of claim 1, wherein: The modular handrail is detachably replaced by one of an iron frame handrail, a solid wood handrail and a soft package handrail through a second connecting interface (8) on the seat frame (1); the iron frame handrail includes an iron frame floor handrail and an iron half non-floor handrail, the lower end of the iron frame floor handrail and the soft package handrail is lower than the lower end of the iron frame seat frame (1), so that the iron frame handrail frame (3) can be supported on the ground; the lower end of the iron half non-floor handrail and the solid wood handrail is flush with the lower end of the iron frame seat frame (1), and the lower end of the iron frame seat frame (1) is supported on the ground through a plurality of independent supporting legs (9); When the modular handrail is the iron frame handrail or the soft package handrail, two vertical beams (29) are longitudinally welded in the handrail frame (3), the two vertical beams (29) are respectively hinged to the table plate (4) through hinges (30), the hinge (30) includes a short connecting section and a long connecting section which are hinged, one connecting section is fixedly connected with the vertical beam (29), and the other connecting section is fixedly connected with the table plate (4); a U-shaped connecting groove is formed on the short connecting section and the long connecting section, the connecting grooves are oppositely arranged, the short connecting section is adaptively arranged on the upper outer side of the long connecting section, and the short connecting section and the long connecting section are relatively rotatably connected through a first connecting pin (31); Limiting holes (32) are longitudinally arranged on the two sides of the long connecting section, a second connecting pin (33) is arranged on the lower part of the short connecting section, third connecting pins (34) are arranged on the two sides of the limiting hole (32), and limiting pieces (35) are respectively arranged at the two ends of the second connecting pin (33) and the third connecting pin (34); when the short connecting section and the long connecting section are relatively rotated, the limiting pieces (35) are driven to move, so that the third connecting pin (34) is longitudinally moved on the limiting hole (32); a locking member is arranged in the connecting groove of the long connecting section, and the locking member is configured to lock the third connecting pin (34) on the limiting hole (32) when the short connecting section and the long connecting section are at a right angle.

9. An iron-framed modular seating according to claim 8, characterized in that: The locking member includes a U-shaped locking block (36), a fourth connecting pin (37) and a torsional spring, the fourth connecting pin (37) is arranged on the long connecting section and the U-shaped locking block (36) and is located outside the limiting hole (32), the torsional spring is sleeved on the fourth connecting pin (37), the U-shaped locking block (36) is located outside the torsional spring, and the two sides of the torsional spring abut against the upper and lower sides of the inner wall of the U-shaped locking block (36); when the table plate (4) is turned to a horizontal state, the third connecting pin (34) is moved to the upper part of the limiting hole (32), the upper end of the U-shaped locking block (36) can be supported on the lower end of the third connecting pin (34), so that the third connecting pin (34) and the limiting piece (35) are in a locked state; Accommodation openings (38) are formed on the two sides of the outer end of the long connecting section and matched with the second connecting pin (33); when the short connecting section is fixed on the vertical beam (29), an arc-shaped buffer groove (39) is arranged on the vertical beam (29), the table plate (4) is turned to a vertical state, and the U-shaped locking block (36) corresponds to the arc-shaped buffer groove (39).

10. An iron-framed modular seating according to claim 8, characterized in that: The independent supporting leg (9) comprises a supporting leg body (40) and a connecting column (41) formed on the upper end of the supporting leg body (40), and the plurality of third connecting interfaces (10) are arranged on the connecting column (41); Or the independent supporting leg (9) comprises a connecting plate (42) and a supporting leg body (40) welded below the connecting plate (42); the third connecting interfaces (10) on the seat frame (1) are arranged on the bottom of the seat frame (1), and the plurality of third connecting interfaces (10) are arranged on the connecting plate (42) and connected and fixed with the bottom of the seat frame (1); The cushion cover outside the seat frame (1) can be detachably bundled on the W-shaped iron bar (6), the backrest cover is detachably and replaceably arranged on the back frame (2) by using a zipper type, the armrest cover and the table plate (4) cover are respectively detachably and replaceably arranged on the armrest frame (3) and the table plate (4) by using a zipper type.

Images