Two-person modular combined seat based on iron frame

Abstract

The utility model relates to a two-person modularized combined seat based on an iron frame, a seat frame of a seat cushion comprises two iron seat frames which can be disassembled and assembled, a back frame comprises two iron back frames which can be disassembled and assembled, and one iron back frame is detachably connected to one iron seat frame; the iron back frame is erected at the upper end of the rear side of the iron seat frame, and a plurality of first connecting ports are correspondingly formed in the iron seat frame and the iron back frame; the handrail frame is detachably arranged on the outer side of the iron seat frame, and a plurality of second connecting ports are formed in the iron seat frame and the handrail frame; 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 supported on the ground 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 whole cabinet can be disassembled into a plurality of small parts, disassembly and assembly are convenient, the loading amount can be reduced, transportation is facilitated, and the transportation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chair technology field especially relates to a double modular combined chair based on iron frame. BACKGROUND

[0002] The existing double seat or sofa adopts wooden structure, is heavy, is troublesome to carry, and due to the relatively large volume, the transportation cost is higher after packing.

[0003] The sofa adopts wooden frame plus layer board to realize frame type structure, which is not only not environmental protection, but also contains glue component in layer board, and formaldehyde component cannot be removed.

[0004] In addition, in order to improve the comfort of the existing chair, some elastic components are installed on the framework of the chair (sofa, leisure sofa, office chair stool and automobile seat) to play the role of rebound and shock absorption.

[0005] In addition, the existing chair fabric cover fixing mode is locked, and it is very troublesome to replace.

[0006] In addition, the chair usually needs to be configured with a side table to place articles, and the setting of the side table occupies space and increases the configuration cost. SUMMARY

[0007] In order to solve the above problems, the purpose of the utility model is to provide a double modular combined chair based on iron frame, the seat frame of the double modular combined chair can be split into two iron seat frames, the back frame can be split into two iron back frames, and the iron back frame and the armrest frame can be detachably arranged on the iron seat frame.

[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0009] The application discloses a two-person modular combined seat based on an iron frame, which comprises a modular seat cushion, a modular armrest and a modular backrest which are detachably arranged on the modular seat cushion, wherein the seat frame of the modular seat cushion and the back frame 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; when the modular armrest is the iron frame armrest or the soft bag armrest, the armrest frames are made of iron pipes, and at least one side of the armrest frame is provided with a foldable table plate; when the modular armrest is the solid wood armrest, rattan is arranged on the armrest frame; indoor sponges are arranged on the seat frame, the back frame and the table plate of the modular combined seat, indoor sponges are arranged on the armrest frames of the modular armrest when the modular armrest is the iron frame armrest or the soft bag armrest, and the indoor sponges can be replaced by outdoor sponges which can drain water; and the two-person modular combined seat is characterized in that:

[0010] The seat frame comprises two detachable iron seat frames, the back frame comprises two detachable iron back frames, and one iron back frame is detachably connected to one iron seat frame; the iron back frame is arranged on the rear side of the upper end of the iron seat frame, and a plurality of first connecting interfaces are arranged on the iron seat frame and the iron back frame; the armrest frame is detachably arranged on the outer side of the iron seat frame, and a plurality of second connecting interfaces are arranged on the iron seat frame and the armrest frame; 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, and a plurality of independent supporting legs which can be detachably arranged on the bottom of the seat frame are arranged on the ground, and a plurality of third connecting interfaces are arranged on the independent supporting legs and the seat frame.

[0011] As a preferred, a plurality of fourth connecting interfaces are arranged on the opposite side walls of the two iron back frames, and the corresponding fourth connecting interfaces on the two sides are connected through bolts.

[0012] As a preferred, the iron seat frame is a rectangular iron frame body, and a receiving space is formed in the iron frame body; the iron frame body comprises outer side iron frames and inner side iron frames, and two upper supporting iron pipes and two lower supporting iron pipes are welded between the outer side iron frames and the inner side iron frames; only the upper part of the outer side iron frame is provided with a cross beam, the two inner side iron frames are abutted and a plurality of fifth connecting interfaces are arranged on the two inner side iron frames, and the corresponding fifth connecting interfaces on the two sides are connected through bolts.

[0013] As a preferred, the outer side iron frames and the inner side iron frames are welded with inclined iron pipes, the inclined iron pipes on the inner side iron frames are provided with part of the fifth connecting interfaces, and the inclined iron pipes on the outer side iron frames are provided with part of the third connecting interfaces.

[0014] As a preferred, the two inner side iron frames are provided with connecting holes in the bottom, the supporting legs comprise supporting rods and connecting blocks formed on the upper end of the supporting rods, and a plurality of bolts for connecting the connecting holes are arranged on the connecting blocks.

[0015] As preferred, the W-shaped iron bars are welded on the circumferential side of the iron seat frame, and the seat cushion cover is arranged on the outer side of the seat frame, and the binding strips are arranged on the inner wall of the circumferential side of the seat cushion cover and are bundled with the W-shaped iron bars.

[0016] As preferred, the mounting table is welded on the upper end of the upper support iron pipe at the rear side of the upper end of the iron seat frame, the first connecting interface is arranged on the mounting table, the bottom of the iron back frame is arranged on the mounting table and is correspondingly provided with the first connecting interface, and the angle of the back frame is adjusted by the angle adjuster between the outer side of the mounting table and the outer side of the iron back frame; the angle adjuster comprises a main body part fixed on the side end of the mounting table, and a seat frame connecting plate and a back frame connecting plate arranged on both sides of the main body part, the seat frame connecting plate is fixed on the side end of the mounting table and is locked with the main body part, and the back frame connecting plate is fixedly connected with the side end of the back frame and can rotate relative to the main body part to adjust the angle of the back frame.

[0017] As preferred, the connecting frame is fixedly arranged on the upper part of the iron back frame, and the support column is hingedly arranged on the connecting frame and is obliquely arranged between the iron back frame and the back cushion cover; when the modular backrest is laid flat, the support column can be turned over and supported on the ground under the action of external force.

[0018] As preferred, the connecting iron pipe is welded on the inner side of the upper part of the seat frame, and the connecting iron pipe is arranged in the same horizontal plane with the upper support iron pipe; a plurality of fixing holes are symmetrically arranged on the upper and lower surfaces of the connecting iron pipe and the upper support iron pipe for mounting the plastic back-shaped buckle; the inner wall of the plastic back-shaped buckle is provided with a protrusion on the upper and lower surfaces, the protrusion extends into the fixing hole to enable the plastic back-shaped buckle to be clamped and fixed on the iron pipe; the side end of the plastic back-shaped buckle is provided with two elliptical blocks, a female tenon and a male tenon are adaptively arranged on the two elliptical blocks and are locked in the radial direction, the two elliptical blocks are clamped to form a hollow elliptical hole, and a circular snail spring is hung on the two hollow elliptical holes for connecting the two plastic back-shaped buckles; the plastic back-shaped buckle is locked on the seat frame through the cooperation of the protrusion and the fixing hole, and is suitable for avoiding sound caused by friction between the plastic back-shaped buckle and the seat frame during repeated up-down movement of the circular snail spring; a U-shaped connecting block is arranged on the top of the plastic back-shaped buckle for detachable buckle type fixing with the seat cushion cover; a plastic-coated iron frame is arranged on the lower end surface of the plurality of circular snail springs; the plastic-coated iron frame comprises a PVC fixed frame strip and a PVC fixed straight strip, and the PVC fixed frame strip and the PVC fixed straight strip are fixedly bundled with the plurality of circular snail springs through a fixing sleeve.

[0019] As preferred, the modular armrest is detachably replaced by one of the iron frame armrest, the solid wood armrest and the soft package armrest through the second connecting interface on the iron seat frame; the iron frame armrest comprises an iron frame floor armrest and an iron half non-floor armrest, the lower end of the iron frame floor armrest and the soft package armrest is lower than the lower end of the iron frame seat frame, so that the iron frame armrest frame can be supported on the ground; the lower end of the iron half non-floor armrest and the solid wood armrest is flush with the lower end of the iron frame seat frame, and the lower end of the iron frame seat frame is supported on the ground through a plurality of independent supporting legs; when the modular armrest is the iron frame armrest or the soft package armrest, two vertical beams are longitudinally welded in the armrest frame, and the two vertical beams are respectively hinged to the table plate through hinges; the independent supporting leg comprises a supporting leg body and a connecting column formed on the upper end of the supporting leg body, a plurality of third connecting interfaces are formed on the connecting column; or the independent supporting leg comprises a connecting piece and a supporting leg body welded below the connecting piece; the third connecting interfaces on the seat frame are arranged on the bottom of the seat frame, and the plurality of third connecting interfaces on the connecting piece are connected and fixed with the bottom of the seat frame; the cushion cover on the outer side of the seat frame is detachably bundled on the W-shaped iron reinforcing bar, the backrest cover is detachably and replaceably arranged on the back frame through a zip fastener, and the armrest cover and the table plate cover are respectively detachably and replaceably arranged on the armrest frame and the table plate through zip fasteners.

[0020] The utility model discloses the above-mentioned technical scheme has the following beneficial effects:

[0021] ①The seat frame of the double modular combined seat can be split into two iron seat frames, the back frame can be split into two iron back frames, and the iron back frame and the armrest frame can be detachably arranged on the iron seat frame. The whole can be split into multiple small parts, which is convenient to disassemble, can reduce the cabinet volume, is beneficial to transportation and can reduce transportation cost.

[0022] ②The cushion, the backrest and the armrest in the seat have multiple style options, which are convenient to assemble and maintain according to user needs.

[0023] ③The supporting legs arranged at the bottom of the seat frame can improve the connection strength between the two iron seat frames and improve the structural strength of the seat frame.

[0024] ④The backrest can be laid flat by tilting, which can be used for the user to lie and sleep, and the supporting column arranged at the back side of the iron back frame can be used for supporting the backrest after the backrest is laid down, which is very safe.

[0025] ⑤The frame body made of iron pipe replaces the wooden seat, which is relatively light in weight, more environmentally friendly, and can form a storage space in the seat frame for placing the backrest and the armrest and other components, thereby improving the storage effect.

[0026] ⑥, the plastic back type buckle can embrace and tightly clamp the iron pipe on the plastic back type buckle, effectively reducing the friction between the plastic back type buckle and the cross beam due to shaking, and reducing the occurrence of abnormal sound; the two sides of the circular snail spring are connected to the hollow oval hole, and the up-down rebound effect is good; the plastic-coated iron wire frame is connected to the plurality of circular snail springs, so that the whole circular snail spring is uniformly stressed, thereby playing a whole high rebound role, making the user sit more comfortably;

[0027] ⑦, the table plate can be hinged on the handrail, so that the handrail of the seat can replace the side table, reducing the configuration cost of other tableware;

[0028] ⑧, the fabric cover can be detachably connected to each part, which is convenient to disassemble and wash, wherein the seat cover cannot adopt a suit zipper type cover, so it is tied to the iron seat frame by a W-shaped iron bar, which is also very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a three-dimensional structure diagram of a two-person modular combined seat based on an iron frame.

[0030] Figure 2 It is an exploded structure diagram of a two-person modular combined seat based on an iron frame.

[0031] Figure 3 It is a three-dimensional structure diagram of an iron seat frame.

[0032] Figure 4 It is a three-dimensional structure diagram of an iron back frame.

[0033] Figure 5 It is a three-dimensional structure diagram of a supporting leg.

[0034] Figure 6 It is a three-dimensional structure diagram of an angle adjuster.

[0035] Figure 7 It is a three-dimensional structure diagram of a first independent supporting leg.

[0036] Figure 8 It is a three-dimensional structure diagram of a second independent supporting leg.

[0037] Figure 9 It is a three-dimensional structure diagram of a plastic back type buckle.

[0038] Figure 10 It is a three-dimensional structure diagram of a plastic back type buckle from another perspective.

[0039] Figure 11 It is a three-dimensional structure diagram of a plastic-coated iron wire frame.

[0040] Figure 12 It is a diagram showing the binding of the plastic-coated iron wire frame and the circular snail spring.

[0041] Figure 13 Fig. 7 is a perspective view of a chair with a half iron floor support armrest.

[0042] Figure 14 Fig. 8 is a perspective view of a table board of the chair with the half iron floor support armrest.

[0043] Figure 15 Fig. 9 is a perspective view of a chair with a half iron floor support armrest.

[0044] Figure 16 Fig. 10 is a perspective view of a table board of the chair with the half iron floor support armrest.

[0045] Figure 17 Fig. 11 is a perspective view of a hinge.

[0046] Figure 18 Fig. 12 is a side view of the hinge.

[0047] Figure 19 Fig. 13 is a perspective view of the hinge.

[0048] Figure 20 Fig. 14 is a perspective view of a chair in Example 2.

[0049] Figure 21 Fig. 15 is a perspective view of a chair with a half iron floor support armrest.

[0050] Figure 22 Fig. 16 is a perspective view of a chair with a solid wood armrest.

[0051] Figure 23 Fig. 17 is a perspective view of another chair with a iron floor support armrest.

[0052] Figure 24 Fig. 18 is a perspective view of still another chair with a iron floor support armrest. DETAILED DESCRIPTION

[0053] Embodiments of the present application are described in detail below with reference to the attached drawings. The embodiments described below are examples of the present application and are not intended to limit the present application. The same or similar components are denoted by the same or similar reference numerals throughout the drawings.

[0054] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0055] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0056] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0057] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature in the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature in the second feature include the vertical and inclined upward of the first feature above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature in the second feature include the vertical and inclined downward of the first feature below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. Embodiment one:

[0058] As Figures 1-19The double modular combined seat shown in the figure based on the iron frame includes a modular seat cushion, and a modular armrest and a modular backrest which are detachably and replaceably arranged on the modular seat cushion, wherein the seat frame of the modular seat cushion and the back frame 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, the modular armrest includes two armrest frames 3, when the modular armrest is the iron frame armrest or the 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 the solid wood armrest, rattan 5 is arranged on the armrest frame 3, indoor sponge is sleeved on the seat frame, the back frame and the table board 4 of the modular combined seat, when the modular armrest is the iron frame armrest or the soft bag armrest, indoor sponge is sleeved on the armrest frame 3, and the indoor sponge can be replaced by outdoor sponge which can drain water.

[0059] The modular seat cushion is provided with a detachable and replaceable modular armrest and a detachable and replaceable modular backrest which can be tilted or laid flat, or a detachable and replaceable supporting seat frame or a detachable and replaceable independent support leg, the modular armrest includes all general modes such as an iron frame armrest, a solid wood armrest and a soft bag armrest, a foldable support and a table board are arranged on any side of the modular armrest, the fabric cover of each component of the modular combined seat can be detached and replaced, and indoor sponge arranged on the components such as the seat frame, the backrest, the armrest and the table board of the modular combined seat can be replaced by outdoor sponge which can drain water or rattan.

[0060] The seat frame includes two detachable and assemblable iron seat frames 1, the back frame includes two detachable and assemblable iron back frames 2, and one iron back frame 2 is detachably connected to one iron seat frame 1, the iron back frame 2 is arranged on the rear side of the upper end of the iron seat frame 1, and a plurality of first connecting interfaces 7 are arranged on the iron seat frame 1 and the iron back frame 2, the armrest frame 3 is detachably arranged on the outer side of the iron seat frame 1, and a plurality of second connecting interfaces 8 are arranged on the iron seat frame 1 and the armrest frame 3, the lower end of the armrest frame 3 is lower than the lower end of the seat frame, 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, and a plurality of independent support legs 9 which can be detachably arranged on the ground are arranged on the bottom of the seat frame, and a plurality of third connecting interfaces 10 are arranged on the independent support legs 9 and the seat frame.

[0061] In the above technical solution, the seat frame of the double modular combined seat can be split into two iron seat frames, the back frame can be split into two iron back frames, the iron back frame and the armrest frame can be detachably arranged on the iron seat frame, the whole can be split into multiple small parts, which is convenient for disassembly and assembly, can reduce the cabinet volume, is beneficial to transportation and can reduce transportation cost, the seat cushion, the backrest and the armrest in the seat have multiple style options, and can be easily assembled and maintained according to user needs, the frame made of iron pipes replaces the wooden seat, is relatively light in weight, is more environmentally friendly, and can form a storage space in the seat frame for placing the backrest and the armrest and the like, thereby improving the storage effect.

[0062] Further, a plurality of fourth connecting interfaces 50 are correspondingly arranged on the opposite side walls of the two iron back frames 2, and the corresponding fourth connecting interfaces 50 on the two sides are connected by bolts. In the technical scheme, the two iron back frames are detachably connected by bolts, and are convenient to disassemble and assemble.

[0063] Further, the iron 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 outer side iron frames 11.1 and inner side iron frames 11.2, and two upper support iron pipes 12 and two lower support iron pipes 13 welded between the outer side iron frames 11.1 and the inner side iron frames 11.2. Only the upper part of the outer side iron frame 11.1 is provided with a cross beam among the outer side iron frames 11.1 and the inner side iron frames 11.2, and the two inner side iron frames 11.2 are in abutment and correspondingly provided with a plurality of fifth connecting interfaces 58, and the corresponding fifth connecting interfaces 58 on the two sides are connected by bolts. In the technical scheme, the upper part of the inner side iron frame is not provided with a cross beam, and the overall sitting feeling is comfortable. The plurality of fifth connecting interfaces on the two inner side iron frames are connected by bolts, so that the connection between the two iron seat frames is reliable, and the overall performance is good.

[0064] Further, the outer side iron frames 11.1 and the inner side iron frames 11.2 are welded with inclined iron pipes 15, the inclined iron pipes 15 on the inner side iron frames 11.2 are provided with part of the fifth connecting interfaces 58, and the inclined iron pipes 15 on the outer side iron frames 11.1 are provided with part of the third connecting interfaces 10. In the technical scheme, the inclined iron pipes improve the structural strength of the iron seat frame, and are convenient for the subsequent first type of supporting leg connection. The fifth connecting interfaces on the inclined iron pipes in the middle can further improve the connecting strength between the iron seat frames.

[0065] The seat frame fixes all the above-mentioned various types of handrail supporting seat frames and independent leg supporting seat frames. The seat frame is provided with a connecting interface with an inclined iron pipe welded at the four corners and a hole position for mounting an independent supporting leg. The seat frame comprises two symmetrical side supporting iron frames for handrails or can be replaced by independent supporting legs. The seat frame is provided with screw hole positions for mounting various handrails and backrests on the two sides, and can be replaced by any type of handrail and backrest. The seat frame is provided with an inclined iron pipe welded at the four corners and a hole position for mounting an independent supporting leg, and various types of legs can be disassembled and replaced. In the scheme, the inclined iron pipe not only improves the structural strength of the seat frame, but also facilitates the installation of the first type of independent supporting leg.

[0066] Further, the seat further comprises a supporting leg 51, and a connecting hole is formed in the bottom of the two inner side iron frames 11.2. The supporting leg 51 comprises a supporting rod and a connecting block formed on the upper end of the supporting rod, and a plurality of bolts for connecting with the connecting hole are arranged on the connecting block. In the technical scheme, the supporting leg not only improves the connecting strength between the iron seat frames, but also provides good support for the middle part of the seat, so that the seat is more safe and durable.

[0067] Furthermore, W-shaped iron ribs 6 are welded to the periphery of the iron seat frame 1, and a seat cushion cover is provided on the outer side of the seat frame. Ties are provided on the inner periphery of the seat cushion cover, which are detachably connected to the W-shaped iron ribs 6. The W-shaped iron ribs not only strengthen the structural strength of the seat frame, but also, because the seat cushion cover has many supporting legs and bottom components, cannot be a zippered cover. Therefore, it is tied to the iron seat frame by the W-shaped iron ribs, making disassembly and assembly very convenient, facilitating maintenance, replacement, and cleaning.

[0068] Furthermore, a mounting platform 14 is welded to the upper end of the upper supporting iron pipe 12 on the upper rear side of the iron base frame 1. The first connecting interface 7 is provided on the mounting platform 14. The bottom of the iron back frame 2 is supported on the mounting platform 14 and is correspondingly provided with the first connecting interface 7. The tilt angle of the back frame is adjusted between the outer side of the mounting platform 14 and the outer side of the iron back frame 2 through an angle adjuster 25. 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 provided 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 and can rotate relative to the main body 26 to adjust the tilt angle of the back frame.

[0069] A connecting frame 52 is fixedly provided on the upper part of the iron back frame 2, and a support column 53 is hinged on the connecting frame 52. The support column 53 is obliquely arranged between the iron back frame 2 and the back cover. When the modular backrest is tilted down, the support column 53 can be flipped and supported on the ground under the action of external force.

[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] Further, the upper inner side of the seat frame is welded with a connecting iron pipe 16, which is arranged in the same horizontal direction with 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 and lower surfaces of the upper supporting iron pipe 12 for mounting plastic back-shaped buckles 17; the inner walls of the plastic back-shaped buckles 17 are provided with protrusions 18 on the upper and lower surfaces, which extend into the fixing holes to enable the plastic back-shaped buckles 17 to be clamped and fixed on the iron pipes; the side ends of the plastic back-shaped buckles 17 are provided with two oval blocks 19, which are adaptively provided with a female tenon and a male tenon locked in the radial direction of the oval blocks 19; after clamping, the two oval blocks 19 form a hollow oval hole 20, and the two hollow oval holes 20 are hung with circular snail springs 21 for connecting the two plastic back-shaped buckles 17; the plastic back-shaped buckles 17 are locked on the seat frame through the cooperation of the protrusions 18 and the fixing holes, which is suitable for avoiding the sound caused by the friction between the plastic back-shaped buckles 17 and the seat frame when the circular snail springs 21 repeatedly move up and down; the top of the plastic back-shaped buckle 17 is provided with a U-shaped connecting block 22 for detachable buckle type fixing with the cushion cover; the lower end surfaces of the plurality of circular snail springs 21 are provided with plastic-coated iron wire frames for connecting the plurality of circular snail springs 21 to enable them to be uniformly stressed as a whole, thereby achieving high resilience. The plastic-coated iron wire frame includes a PVC fixed frame strip 23 and a PVC fixed straight strip 24, which are fixed with the plurality of circular snail springs 21 through a fixing sleeve 200. In this scheme, the plastic back-shaped buckle can embrace the iron pipe and tightly clamp it on the plastic back-shaped buckle, effectively reducing the friction between the plastic back-shaped buckle and the cross beam caused by shaking and reducing the occurrence of abnormal sound; the two sides of the circular snail spring are connected to the hollow oval hole, and the up-and-down resilience effect is good; the plurality of circular snail springs are connected by the plastic-coated iron wire frame, so that the circular snail springs are uniformly stressed as a whole, thereby achieving high overall resilience and making the user more comfortable when sitting.

[0072] The seat frame is connected with the iron seat frame by the plastic back-shaped buckle, and the circular snail spring is fixed by the protrusion of the circular snail spring cooperating with the fixing hole, so that the friction sound is not generated when the human body repeatedly sits up and down, the seat frame and the circular snail spring are grafted by the two ends of the plastic back-shaped buckle to achieve a more comfortable sitting feeling, the top U-shaped of the plastic back-shaped multifunctional buckle is buckle type fixed by the cushion cover, which can be detached from the cover, the elastic assembly includes a plurality of circular snail springs, and the circular snail springs are provided with two plastic-coated iron wire frames on the upper and lower surfaces, so that the circular snail springs on the seat frame are uniformly stressed as a whole to achieve high resilience and never deform.

[0073] Further, the modular armrest is detachably replaced by one of the iron frame armrest, the solid wood armrest and the soft package armrest through the second connecting interface 8 on the iron seat frame 1; the iron frame armrest includes the iron frame floor armrest and the iron half non-floor armrest, the lower end of the iron frame floor armrest and the soft package armrest is lower than the lower end of the iron frame seat frame, so that the iron frame armrest frame 3 can be supported on the ground; the lower end of the iron half non-floor armrest and the solid wood armrest is flush with the lower end of the iron frame seat frame, and the lower end of the iron frame seat frame is supported on the ground through a plurality of independent supporting legs 9; when the modular armrest is the iron frame armrest or the soft package armrest, two vertical beams 29 are longitudinally welded in the armrest frame 3, and the two vertical beams 29 are respectively hinged to the table plate 4 through hinges 30; the independent supporting leg 9 includes a supporting leg body 40 and a connecting column 41 formed on the upper end of the supporting leg body 40, and a plurality of third connecting interfaces 10 are formed on the connecting column 41; or the independent supporting leg 9 includes a connecting piece 42 and a supporting leg body 40 welded below the connecting piece 42; the third connecting interface 10 on the seat frame is arranged at the bottom of the seat frame, and the plurality of third connecting interfaces 10 on the connecting piece 42 are connected and fixed with the bottom of the seat frame; the cushion cover outside the seat frame is detachably bundled on the W-shaped iron bar 6, the backrest cover is detachably replaced on the back frame by using a zipper type, the armrest cover and the table plate 4 cover are respectively detachably replaced on the armrest frame 3 and the table plate 4 by using a zipper type.

[0074] Further, the hinge 30 includes a short connecting section and a long connecting section which are hinged, one of the connecting sections is fixedly connected with the vertical beam 29, and the other connecting section is fixedly connected with the table plate 4; the short connecting section and the long connecting section are provided with a U-shaped connecting groove, the connecting grooves are oppositely arranged and the short connecting section is adaptively arranged on the upper outer side of the long connecting section, and the two are relatively rotatably connected through a first connecting pin 31;

[0075] limiting holes 32 are longitudinally formed on the two sides of the long connecting section, a second connecting pin 33 is penetrated through the lower part of the short connecting section, a third connecting pin 34 is penetrated through the limiting holes 32 on the two sides, and limiting pieces 35 are respectively connected 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 as to pull the third connecting pin 34 to longitudinally move on the limiting hole 32; a locking piece is arranged in the connecting groove of the long connecting section, and the locking piece 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.

[0076] The locking member comprises a U-shaped locking block 36, a fourth connecting pin 37 and a torsion 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 torsion spring is sleeved on the fourth connecting pin 37, and the U-shaped locking block 36 is located outside the torsion spring. The two sides 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 board 4 is turned to the 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 the locked state.

[0077] The outer ends of the long connecting section are provided with accommodating openings 38 matched 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. When the table board 4 is turned to the vertical state, the U-shaped locking block 36 corresponds to the arc-shaped buffer groove 39.

[0078] In the above technical solution, when the short connecting section and the long connecting section are relatively unfolded, the linkage limiting piece drives the third connecting pin to move in the limiting hole. When the third connecting pin moves to a certain distance in the limiting hole, the third connecting pin can be locked by the locking member, so that the table board can be kept in the horizontal state, and objects or office work can be placed. The locking member comprises a U-shaped locking block 14, a fourth connecting pin 15 and a torsion spring. When the third connecting pin moves upward, the upper part of the U-shaped locking block is squeezed to move to the upper end of the limiting hole, and the U-shaped locking block is reset under the action of the torsion spring to abut against the lower end of the third connecting pin, so that the third connecting pin can be kept at the upper end of the limiting hole, and the limiting piece and the second connecting pin are in the locked state. The table board is stably kept in the horizontal state. Multiple hinges are designed, which can improve the bearing capacity of the table board. In this case, two hinges are designed, so that the bearing capacity of the table board is about 50 kg, the bearing capacity is high, and the daily use can be met. When unlocking, only the outer side of the U-shaped locking block needs to be pressed, the inner end of the U-shaped locking block is opened, the third connecting pin falls, and the table board is reset. If the short connecting section is fixed on the vertical beam, the third connecting pin moves horizontally in the limiting hole. If the long connecting section is fixed on the vertical beam, the third connecting pin moves vertically in the limiting hole. The accommodating opening is arranged, so that when the long connecting section and the short connecting section are folded, the second connecting pin can be accommodated in the accommodating opening of the long connecting section, so that the table board is closer to the armrest in the initial vertical state, and is more beautiful. In addition, the arrangement of the arc-shaped buffer groove can reduce the abnormal noise generated by the collision between the U-shaped locking block and the vertical beam when the table board is turned to the vertical state, and better protect the U-shaped locking block. Embodiment two:

[0079] As shown in Figure 20 The gap is formed between the two side mounting tables 14, and the angle adjuster 25 is arranged on the two sides of the iron back frame. In the double-person sitting device, the backrest can be individually adjusted.

[0080] As shown in Figures 21-24Part of the chair display, armrest frame, seat frame, back frame and the combination of the foot is not representative of the total scheme of the iron frame type modular chair, and there are many combination schemes.

[0081] In the specific embodiment, in view of the problems existing in the existing chair, the above-mentioned scheme splits the seat frame of the two-person modular combined chair into two iron seat frames, and splits the back frame into two iron back frames, and the iron back frame and the armrest frame can be detachably arranged on the iron seat frame, and the whole can be split into multiple small parts, which is convenient for disassembly, can reduce the cabinet volume, is beneficial to transportation, reduces transportation cost; the seat cushion, backrest and armrest in the chair have multiple style options, which can be easily assembled and maintained according to user needs; the frame body made of iron pipe replaces the wooden chair, and the weight is relatively light, more environmentally friendly, and a storage space can be formed in the seat frame for placing components such as backrest and armrest, improving the storage effect; the plastic back type buckle can embrace and tightly clamp the iron pipe on the plastic back type buckle, effectively reducing the friction between the plastic back type buckle and the cross beam due to shaking, and reducing the occurrence of abnormal sound; the two sides of the circular snail spring are connected to the hollow oval hole, and the up-down rebound effect is good; the plastic-coated iron wire frame is connected to multiple circular snail springs, so that the whole circular snail spring is uniformly stressed, thereby playing a whole high-rebound role, making the user sit more comfortably; the table plate can be hingedly connected to the armrest, so that the armrest of the chair can replace the side table, reducing the configuration cost of other tableware; the fabric cover can be detachably connected to each component, which is convenient to disassemble and wash.

[0082] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. Those skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.

Claims

1. A two-person modular combined seating based on ferrous framework, comprising a modular seat cushion, and a modular armrest and a modular backrest, which are detachably replaceable and arranged on the modular seat cushion, wherein, The seat frame of the modular seat cushion and the back frame 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 armrest, and the modular armrest comprises two armrest frames (3); when the modular armrest is an iron frame armrest or a soft 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, the armrest frame (3) is provided with rattan (5); the seat frame, the back frame and the table board (4) of the modular combined seat are provided with indoor sponges, the armrest frame (3) is provided with indoor sponges when the modular armrest is an iron frame armrest or a soft armrest, and the indoor sponges can be replaced by outdoor sponges. The seat frame comprises two detachable and assemblable iron seat frames (1), the back frame comprises two detachable and assemblable iron back frames (2), and one iron back frame (2) is detachably connected to one iron seat frame (1); the iron back frame (2) is arranged on the rear side of the upper end of the iron seat frame (1), and the iron seat frame (1) and the iron back frame (2) are provided with a plurality of first connecting interfaces (7) correspondingly; the armrest frame (3) is detachably arranged on the outer side of the iron seat frame (1), and the iron seat frame (1) and the armrest frame (3) are provided with a plurality of second connecting interfaces (8) correspondingly; the lower end of the armrest frame (3) is lower than the lower end of the seat frame, 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, and the bottom of the seat frame is detachably provided with a plurality of independent supporting legs (9) which can be supported on the ground, and the independent supporting leg (9) and the seat frame are provided with a plurality of third connecting interfaces (10) correspondingly.

2. A two-person modular combined seating based on ferrous framework according to claim 1, characterized in that: A plurality of fourth connecting interfaces (50) are correspondingly arranged on the opposite side walls of the two iron back frames (2), and the corresponding fourth connecting interfaces (50) on the two sides are connected by bolts.

3. A two-person modular combined seating based on ferrous framework according to claim 1, characterized in that: The iron 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 outer side edge iron frames (11.1) and inner side edge iron frames (11.2), and two upper supporting iron pipes (12) and two lower supporting iron pipes (13) welded between the outer side edge iron frames (11.1) and the inner side edge iron frames (11.2); only the upper part of the outer side edge iron frame (11.1) is provided with a cross beam among the outer side edge iron frames (11.1) and the inner side edge iron frames (11.2), the two inner side edge iron frames (11.2) are in abutment and correspondingly provided with a plurality of fifth connecting interfaces (58), and the corresponding fifth connecting interfaces (58) on the two sides are connected by bolts.

4. A two-person modular combined seating based on ferrous framework according to claim 3, characterized in that: The outer side edge iron frames (11.1) and the inner side edge iron frames (11.2) are welded with inclined iron pipes (15), the inclined iron pipes (15) on the inner side edge iron frames (11.2) are provided with part of the fifth connecting interfaces (58), and the inclined iron pipes (15) on the outer side edge iron frames (11.1) are provided with part of the third connecting interfaces (10).

5. A two-person modular combined seating based on ferrous framework according to claim 4, characterized in that: Further comprising supporting legs (51), the bottom of the inner side edge iron frame (11.2) on the two sides is provided with a connecting hole, and the supporting leg (51) comprises a supporting rod and a connecting block formed on the upper end of the supporting rod, and the connecting block is provided with a plurality of bolts for connecting with the connecting hole.

6. A two-person modular combined seating based on ferrous framework according to claim 5, characterized in that: The W-shaped iron strip (6) is welded on the circumferential side of the iron seat frame (1), the outer side of the seat frame is provided with a cushion cover, and the inner wall of the circumferential side of the cushion cover is provided with a binding strip and the W-shaped iron strip (6) is detachably connected.

7. A two-person modular combined seating based on ferrous framework according to claim 2, characterized in that: The upper end of the iron seat frame (1) is welded with a mounting table (14) on the upper end of the upper supporting iron pipe (12), the first connecting interface (7) is arranged on the mounting table (14), the bottom of the iron back frame (2) is arranged on the mounting table (14) and is correspondingly provided with the first connecting interface (7), and the outer side of the mounting table (14) and the outer side of the iron back frame (2) are connected through the angle adjuster (25) to adjust the inclination angle of the back frame; the angle adjuster (25) comprises a main body (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 (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 (26), and the back frame connecting plate (28) is fixedly connected with the side end of the back frame and can rotate relative to the main body (26) to adjust the inclination angle of the back frame.

8. A two-person modular combined seating based on ferrous framework according to claim 7, characterized in that: The upper part of the iron back frame (2) is fixedly provided with a connecting frame (52), the connecting frame (52) is hingedly provided with a supporting column (53), and the supporting column (53) is obliquely arranged between the iron back frame (2) and the backrest cover; when the modular backrest is laid flat, the supporting column (53) can be turned over and supported on the ground under the action of external force.

9. A two-person modular combined seating based on ferrous framework according to claim 3, characterized in that: The upper inner side of the seat frame is welded with a connecting iron pipe (16), 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 mounting plastic back-shaped buckles (17); a protrusion (18) is arranged on the inner wall of the plastic back-shaped buckle (17) and the upper and lower surfaces thereof, the protrusion (18) extends into the fixing hole to enable the plastic back-shaped buckle (17) to be clamped and fixed on the iron pipe; the side end of the plastic back-shaped buckle (17) is provided with two oval blocks (19), the two oval blocks (19) are adaptively provided with a female tenon and a male tenon which are locked in the radial direction, the two oval blocks (19) are clamped to form a hollow oval hole (20), and a circular snail spring (21) is hung on the two hollow oval holes (20) for connecting the two plastic back-shaped buckles (17); the plastic back-shaped buckle (17) is locked on the seat frame through the cooperation of the protrusion (18) and the fixing hole, and is suitable for avoiding sound caused by friction between the plastic back-shaped buckle (17) and the seat frame when the circular snail spring (21) repeatedly moves up and down; a U-shaped connecting block (22) is arranged on the top of the plastic back-shaped buckle (17) for detachable buckle type fixing with the cushion cover; a plastic-coated iron wire frame is arranged on the lower end surface of the plurality of circular snail springs (21); the plastic-coated iron wire frame comprises 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 fixedly connected with the plurality of circular snail springs (21) through a fixing sleeve.

10. A two-person modular combined seating based on ferrous framework according to claim 2, characterized in that: The modular handrail is detachably replaced by one of the iron frame handrail, the solid wood handrail and the soft package handrail through the second connecting interface (8) on the iron seat frame (1); the iron frame handrail includes the iron frame floor handrail and the iron half not 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, so that the iron frame handrail frame (3) can be supported on the ground; the lower end of the iron half not floor handrail and the solid wood handrail is flush with the lower end of the iron frame seat frame, and the lower end of the iron frame seat frame 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), and the two vertical beams (29) are respectively hinged to the table plate (4) through hinges (30); the independent supporting leg (9) includes a supporting leg body (40) and a connecting column (41) formed on the upper end of the supporting leg body (40), a plurality of third connecting interfaces (10) are formed on the connecting column (41); or the independent supporting leg (9) includes a connecting piece (42) and a supporting leg body (40) welded below the connecting piece (42); the third connecting interface (10) on the seat frame is arranged on the bottom of the seat frame, the plurality of third connecting interfaces (10) are formed on the connecting piece (42) and are connected and fixed with the bottom of the seat frame; the cushion cover outside the seat frame is detachably bundled on the W-shaped iron bar (6), the backrest cover is detachably replaced and arranged on the back frame by using a zipper type, the handrail cover and the table plate (4) cover are respectively detachably replaced and arranged on the handrail frame (3) and the table plate (4) by using a zipper type.

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