Sofa inner frame structure

Abstract

The utility model discloses a sofa inner frame structure which comprises a backrest body and a base, and the backrest body is an integrally formed blow molding piece; the base comprises two main bodies, an iron stand, a seat front plate and a seat frame arranged between the two main bodies, the seat front plate is arranged at the front ends of the two main bodies and connected with a leg supporting plate of the iron stand, the seat frame is installed on the iron stand, the two ends of the seat frame are connected with the two main bodies respectively, and the two main bodies and the seat front plate are all blow molding parts which are integrally formed. Due to the design, the situation that the sofa inner frame is easily influenced by external factors such as humidity, temperature and the like to deform is reduced, secondly, compared with a sofa inner frame made of clamping plates and battens, the sofa inner frame structure provided by the utility model does not need to be connected through a complex splicing process and glue, and the cost is reduced. Mass production of the backrest body, the main body and the seat front plate can be achieved only through one set of mold, the production efficiency is improved, and the structural stability of the sofa inner frame is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, and more specifically to an inner frame structure of a sofa. Background Art

[0002] With the continuous development of the furniture manufacturing industry, the sofa, as an indispensable part of home life, the innovation of its design and manufacturing technology is particularly critical. Generally speaking, the inner frame structure of the sofa mainly includes the base part and the backrest part. The structural design of these two parts directly affects the durability and production efficiency of the sofa.

[0003] The manufacturing of traditional sofa inner frames mainly relies on plywood and wood as the main structure. This structure is usually composed of multiple layers of plywood stacked and reinforced and supported by wood to form a stable frame. However, with the continuous development of the furniture market and the increasing diversification of consumer demand, this traditional manufacturing method has gradually revealed the following limitations:

[0004] 1. Material limitations: As a natural material, the strength and stability of wood are greatly affected by factors such as environment, humidity and temperature, and it is prone to deformation, cracking and other problems;

[0005] 2. Complex splicing process: Wood splicing requires professional technology and skills to ensure that the base structure is stable and not easy to loosen after splicing. Glue is needed for bonding during the splicing process, which not only increases the production cost, but also may cause the base to loosen or crack due to aging of the glue after long-term use;

[0006] 3. Low production efficiency and high production cost: Wood processing requires multiple steps, such as cutting, grinding, splicing, etc. These steps are not only time-consuming and labor-intensive, but also difficult to automate, resulting in low production efficiency; and the use of glue for bonding also increases the production cycle, because it is necessary to wait for the glue to dry and solidify before proceeding to the next step. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the utility model provides a sofa inner frame structure to solve the problems of low production efficiency and high production cost of the existing sofa inner frame.

[0008] The technical solution of the utility model is as follows: a sofa inner frame structure, including a backrest body and a base, the backrest body is an integral blow-molded part; the base includes two main bodies, an iron frame, a seat front plate and a seat frame arranged between the two main bodies, the seat front plate is arranged at the front ends of the two main bodies and the seat front plate is connected to the leg support plate of the iron frame, the seat frame is installed on the iron frame, and the two ends of the seat frame are respectively connected to the two main bodies, and the two main bodies and the seat front plate are all integral blow-molded parts.

[0009] Furthermore, at least a portion of the backrest body is sunken inward to form a recess, and at least a portion of the lower end of the backrest body is extended outward to form a protruding portion, and the protruding portion is installed with a fixing frame, and at least a portion of the fixing frame is embedded in the recess, and the protruding portion is fixedly connected to the iron frame through the fixing frame; a fixing plate is provided at the lower end of the fixing frame, and the fixing plate is horizontally arranged.

[0010] Further, the fixing frame includes a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame each include a base and an extension portion, the base and the extension portion are perpendicular to each other, the base is in contact with the inner wall of the recess, and the extension portion is in contact with the front end surface of the backrest body.

[0011] Furthermore, the first mounting frame and the second mounting frame are both L-shaped plates.

[0012] Furthermore, it also includes a flip mechanism and a flip armrest, both ends of the seat frame are provided with mounting brackets, one end of the flip mechanism is connected to the mounting bracket, and the other end of the flip mechanism is connected to the flip armrest.

[0013] Furthermore, a storage groove is provided in the main body, at least a portion of the mounting bracket extends into the storage groove, and the mounting bracket is connected to the embedded nut in the main body by bolts.

[0014] Further, the flipping mechanism includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are rotatably connected, the first connecting part is provided with a first mounting hole penetrating the thickness of the first connecting part, the mounting bracket is correspondingly provided with a second mounting hole penetrating the thickness of the mounting bracket, the first mounting hole and the second mounting hole are correspondingly provided, the second connecting part is provided with a third mounting hole penetrating the thickness of the second connecting part, the third mounting hole is used for inserting a bolt so that the bolt is threadedly connected to the embedded nut in the flipping armrest.

[0015] Furthermore, a plurality of elastic members are provided on the seat frame, and the plurality of elastic members are arranged at equal intervals.

[0016] Furthermore, the plurality of elastic members are all serpentine springs.

[0017] Furthermore, a first functional hole and a second functional hole are provided on one side of the main body, the first functional hole and the second functional hole are both connected to the storage slot, the first functional hole is used to install the charging seat, and the second functional hole is used to install the mobile phone holder.

[0018] The utility model according to the above scheme has the following beneficial effects:

[0019] (1) The utility model provides a sofa inner frame structure, including a backrest body and a base, wherein the backrest body is an integral blow-molded part; the base includes two main bodies, an iron frame, a seat front plate, and a seat frame arranged between the two main bodies, wherein the seat front plate is arranged at the front end of the two main bodies and is connected to the leg support plate of the iron frame, the seat frame is installed on the iron frame, and the two ends of the seat frame are respectively connected to the two main bodies, and the two main bodies and the seat front plate are all integral blow-molded parts. This design reduces the susceptibility of the sofa inner frame to deformation due to external factors such as humidity and temperature. Secondly, compared with the sofa inner frame made of plywood and wood, the sofa inner frame structure provided by the utility model does not need to be connected through complicated splicing processes and glue, and only requires one set of molds to achieve mass production of the backrest body, the main body and the seat front plate, which not only improves production efficiency, but also enhances the structural stability of the sofa inner frame.

[0020] (2) The utility model provides a sofa inner frame structure, wherein at least a portion of the backrest body is sunken inward to form a concave portion, and at least a portion of the lower end of the backrest body is extended outward to form a convex portion, and a fixing frame is installed on the convex portion, and at least a portion of the fixing frame is embedded in the concave portion, and the convex portion is fixedly connected to the iron frame through the fixing frame; a fixing plate is fixedly installed at the lower end of the fixing frame, and the fixing plate is arranged horizontally. This design conforms to the principle of ergonomics. When a person sits on the sofa, the back can naturally fit into the concave portion, reducing the fatigue caused by long-term sitting, and greatly improving the practicality of the sofa. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a structural decomposition diagram of a sofa inner frame structure in an embodiment of the utility model;

[0023] Figure 2 This is a structural schematic diagram of a sofa inner frame structure in an embodiment of the utility model;

[0024] Figure 3 This is one of the structural schematic diagrams of the base in the embodiment of the utility model;

[0025] Figure 4 This is the second structural schematic diagram of the base in the embodiment of the utility model.

[0026] In the figure, 1, backrest body; 11, recess; 12, protruding portion; 2, base; 21, main body; 211, storage slot; 212, first functional hole; 213, second functional hole; 22, seat front plate; 23, seat frame; 24, iron frame; 241, leg support plate; 4, fixing frame; 4a, base; 4b, extension portion; 41, first mounting frame; 42, second mounting frame; 5, fixing plate; 6, flip mechanism; 61, first connecting portion; 611, first mounting hole; 62, second connecting portion; 621, third mounting hole; 7, flip armrest; 8, mounting bracket; 81, second mounting hole; 9, elastic member. DETAILED DESCRIPTION

[0027] The following detailed description and drawings of the embodiments of the present invention are used to illustrate the principle of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the embodiments described.

[0028] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0029] Traditional sofa inner frames are mainly made of plywood and wood. As natural materials, the stability and strength of plywood and wood are significantly affected by factors such as humidity and temperature, and are prone to deformation, cracking and other problems. Secondly, plywood and wood need to be connected through complex splicing processes and glue, which not only increases production costs, but also causes the aging of glue after long-term use, which can easily lead to loosening or cracking of the connection parts.

[0030] Based on this, the present invention provides a sofa inner frame structure, see Figure 1 As shown, the inner frame structure of the sofa includes a backrest body 1 and a base 2, the backrest body 1 is an integral blow-molded part, the base 2 includes two main bodies 21, an iron frame 24, a seat front plate 22 and a seat frame 23 arranged between the two main bodies 21, the seat front plate 22 is arranged at the front end of the two main bodies 21 and the seat front plate 22 is connected to the leg support plate 241 of the iron frame 24, the seat frame 23 is installed on the iron frame 24, and the two ends of the seat frame 23 are respectively connected to the two main bodies 21, and the two main bodies 21 and the seat front plate 22 are all integral blow-molded parts.

[0031] Specifically, the backrest body 1 and the main body 21 and the seat front plate 22 of the base 2 are all blow-molded parts that are integrally formed. Only one set of molds is needed to achieve mass production. There is no need to assemble the backrest structure through a complex splicing process, which eliminates the dimensional errors that may occur during the assembly process and enhances the structural stability of the backrest body 1. Compared with traditional wooden boards and wooden squares, the backrest body 1, the main body 21 and the seat front plate 22 have higher homogeneity and consistency, and can maintain the stability of shape and size during long-term use. Secondly, this design reduces the possibility that the inner frame of the sofa is easily deformed by external factors such as humidity and temperature, while reducing the overall weight of the sofa, making it easier to carry and install.

[0032] See also Figure 1-2 As shown, at least a portion of the backrest body 1 is sunken inward to form a recess 11, and at least a portion of the lower end of the backrest body 1 is extended outward to form a protruding portion 12, and the protruding portion 12 is installed with a fixing frame 4, and at least a portion of the fixing frame 4 is embedded in the recess 11, and the protruding portion 12 is fixedly connected to the iron frame 24 through the fixing frame 4; the fixing plate 5 is fixedly installed at the lower end of the fixing frame 4, and the fixing plate 5 is horizontally arranged. Specifically, the fixing frame 4 is embedded in the recess 11 of the backrest body 1, and the fixing plate 5 is fixedly installed at the lower end of the fixing frame 4. Through the combined design of the fixing frame 4 and the fixing plate 5, the structural firmness of the sofa backrest can be enhanced, and the probability of deformation of the backrest body 1 can be reduced, thereby improving the durability of the sofa backrest.

[0033] In this embodiment, the backrest body 1 is also provided with a plurality of elastic belts, which span the recessed portion 11 and are fixedly connected to the backrest body 1 at both ends. With this design, when a person sits on the sofa, the back is pressed against the elastic belt, and the elastic belt is deformed to provide a certain rebound force. This rebound force can enhance the support for the back, so that the back can be better fitted and supported, which helps to disperse the pressure on the back and improve the comfort of the sitting posture. Since the elastic belt has a certain elasticity and deformability, it can adapt to users of different body shapes and sitting postures. No matter how the user's back curve changes, the elastic belt can adapt by deforming itself to ensure that the back is always well supported.

[0034] Preferably, the fixing frame 4 includes a first mounting frame 41 and a second mounting frame 42, each of which includes a base 4a and an extension 4b, the base 4a and the extension 4b are perpendicular to each other, the base 4a contacts the inner wall of the recess 11, and the extension 4b contacts the front end surface of the backrest body 1. With this design, the first mounting frame 41 and the second mounting frame 42 can be placed in a corner of the backrest body 1, which not only enhances the installation firmness of the first mounting frame 41 and the second mounting frame 42, but also improves the installation efficiency.

[0035] Preferably, the first mounting frame 41 and the second mounting frame 42 are both L-shaped plates.

[0036] See also Figure 2-Figure 3 As shown, a sofa inner frame structure provided by an embodiment of the utility model also includes a flip mechanism 6 and a flip armrest 7. Both ends of the seat frame 23 are provided with mounting brackets 8. One end of the flip mechanism 6 is connected to the mounting bracket 8, and the other end of the flip mechanism 6 is connected to the flip armrest 7. In this embodiment, the flip armrest 7 can be flipped to different positions as needed, thereby changing the use state of the sofa. For example, when the flip armrest 7 is in the storage state, the sofa presents a simple appearance and does not occupy too much space; when the flip armrest 7 is flipped to the use state, the flip armrest 7 can provide support for the arm and reduce the fatigue of the arm; at the same time, the flip armrest 7 can also be used as a platform for placing items, such as books, remote controls, etc., which increases the practicality of the sofa.

[0037] Specifically, a storage groove 211 is provided in the main body 21, at least a portion of the mounting bracket 8 extends into the storage groove 211, and the mounting bracket 8 is connected to the embedded nut in the main body 21 by bolts; this design ensures a firm connection between the mounting bracket 8 and the main body 21, and prevents the flip armrest 7 and other components from loosening or falling off during use. Secondly, with this design, the installer only needs to align the mounting bracket 8 with the embedded nut and then tighten the bolt to complete the installation, which not only improves the installation efficiency, but also reduces the installation difficulty, making the installation process convenient and quick.

[0038] Specifically, a first functional hole 212 and a second functional hole 213 are provided on one side of the main body 21. The first functional hole 212 and the second functional hole 213 are both connected to the storage slot 211. The first functional hole 212 is used to install the charging stand, and the second functional hole 213 is used to install the mobile phone holder. The first functional hole 212 and the second functional hole 213 provided on one side of the main body 21 add additional functions to the sofa. The first functional hole 212 is used to install the charging stand, so that the user can conveniently charge the mobile phone and other electronic devices on the sofa; the second functional hole 213 is used to install the mobile phone holder, and the user can fix the mobile phone on the mobile phone holder to watch videos or perform other operations. This design improves the practicality of the sofa.

[0039] See also Figure 4As shown, in the present embodiment, the flip mechanism 6 includes a first connecting portion 61 and a second connecting portion 62, and the first connecting portion 61 and the second connecting portion 62 are rotatably connected. The first connecting portion 61 is provided with a first mounting hole 611 penetrating the thickness of the first connecting portion 61, and the mounting bracket 8 is correspondingly provided with a second mounting hole 81 penetrating the thickness of the mounting bracket 8. The first mounting hole 611 and the second mounting hole 81 are correspondingly arranged, so that the flip armrest 7 and the mounting bracket 8 can be connected by bolts, ensuring a firm connection between the flip armrest 7 and the inner frame of the sofa, and avoiding the risk of the flip armrest 7 loosening during use. The second connecting portion 62 is provided with a third mounting hole 621 penetrating the thickness of the second connecting portion 62, and the third mounting hole 621 is used for inserting a bolt so that the bolt is threadedly connected to the embedded nut in the flip armrest 7.

[0040] Preferably, a plurality of elastic members 9 are provided on the seat frame 23, and the plurality of elastic members 9 are arranged at equal intervals.

[0041] In this embodiment, the plurality of elastic members 9 are all serpentine springs.

[0042] It should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the application product is usually placed when used, or is the orientation or position relationship commonly understood by technical personnel in this field, or is the orientation or position relationship in which the application product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0044] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A sofa inner frame structure, characterized in that: include: A backrest body (1), wherein the backrest body (1) is an integrally formed blow-molded part; A base (2), the base (2) comprising two main bodies (21), a seat front plate (22), a seat frame (23) arranged between the two main bodies (21), and an iron frame (24), the seat front plate (22) being arranged at the front ends of the two main bodies (21) and connected to the iron frame (24), the seat frame (23) being mounted on a leg support plate (241) of the iron frame (24), and the two ends of the seat frame (23) being respectively connected to the two main bodies (21), and the two main bodies (21) and the seat front plate (22) are all blow-molded parts formed in one piece.

2. A sofa inner frame structure as claimed in claim 1, characterized in that: At least a portion of the backrest body (1) is recessed inward to form a recess (11), and at least a portion of the lower end of the backrest body (1) is extended outward to form a protruding portion (12). The protruding portion (12) is installed with a fixing frame (4), and at least a portion of the fixing frame (4) is embedded in the recess (11). The protruding portion (12) is fixedly connected to the iron frame (24) through the fixing frame (4); a fixing plate (5) is arranged at the lower end of the fixing frame (4), and the fixing plate (5) is arranged horizontally.

3. A sofa inner frame structure as claimed in claim 2, characterized in that: The fixing frame (4) comprises a first mounting frame (41) and a second mounting frame (42), wherein the first mounting frame (41) and the second mounting frame (42) both comprise a base (4a) and an extension (4b), wherein the base (4a) and the extension (4b) are perpendicular to each other, wherein the base (4a) contacts the inner wall of the recess (11), and the extension (4b) contacts the front end surface of the backrest body (1).

4. A sofa inner frame structure as claimed in claim 3, characterized in that: The first mounting frame (41) and the second mounting frame (42) are both L-shaped plates.

5. The sofa inner frame structure according to claim 2, characterized in that: It also includes a flip mechanism (6) and a flip armrest (7), and mounting brackets (8) are provided at both ends of the seat frame (23), one end of the flip mechanism (6) is connected to the mounting bracket (8), and the other end of the flip mechanism (6) is connected to the flip armrest (7).

6. A sofa inner frame structure as claimed in claim 5, characterized in that: A storage groove (211) is provided in the main body (21), at least a portion of the mounting bracket (8) extends into the storage groove (211), and the mounting bracket (8) is connected to the embedded nut in the main body (21) via bolts.

7. The sofa inner frame structure according to claim 5, characterized in that: The flip mechanism (6) comprises a first connecting portion (61) and a second connecting portion (62), the first connecting portion (61) and the second connecting portion (62) being rotatably connected, the first connecting portion (61) being provided with a first mounting hole (611) penetrating the thickness of the first connecting portion (61), the mounting bracket (8) being correspondingly provided with a second mounting hole (81) penetrating the thickness of the mounting bracket (8), the first mounting hole (611) and the second mounting hole (81) being correspondingly provided, the second connecting portion (62) being provided with a third mounting hole (621) penetrating the thickness of the second connecting portion (62), the third mounting hole (621) being used for inserting a bolt so that the bolt is threadedly connected with a pre-embedded nut in the flip armrest (7).

8. The sofa inner frame structure according to claim 6, characterized in that: A plurality of elastic members (9) are arranged on the seat frame (23), and the plurality of elastic members (9) are arranged at equal intervals.

9. A sofa inner frame structure as claimed in claim 8, characterized in that: The plurality of elastic members (9) are all serpentine springs.

10. The sofa inner frame structure according to claim 8, characterized in that: A first functional hole (212) and a second functional hole (213) are provided on one side of the main body (21); the first functional hole (212) and the second functional hole (213) are both connected to the storage slot (211); the first functional hole (212) is used for installing a charging seat, and the second functional hole (213) is used for installing a mobile phone holder.

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