Sofa seat frame structure

Abstract

The utility model discloses a sofa seat frame structure which comprises two main body parts, a leg supporting plate and a frame arranged between the two main body parts, and the main body parts and the leg supporting plate are integrally molded blow molding parts, so that the sofa seat frame can be kept in a stable form when bearing pressure due to the design; due to the fact that the main body part and the leg supporting plate are the blow molding parts which are integrally formed, connection through a complex splicing technology and glue is not needed, the leg supporting plate can be manufactured through a one-time forming technology only through one set of molds, the production process is greatly simplified, the production cost is reduced, and material waste and labor cost in the production process are reduced. And secondly, the integral structural stability of the sofa seat frame is greatly enhanced in a manner that the fixed bracket penetrates through the mounting groove and extends into the storage groove, and the fastener is fixedly connected with the embedded nut.

Description

Technical Field

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

[0002] In modern life, sofas emphasize comfort, nature and simplicity. They can not only be used to decorate the living room, but also be a good place for taking a nap or dreaming. There are armrests on both sides of the sofa, which are wrapped with soft elastic materials and are relatively comfortable overall. The sofa seat frame constitutes the main structure and basic shape of the sofa. The materials of the seat frame are mainly wood, artificial board and medium-density fiberboard, etc. The seat frame mainly meets the shape requirements and strength requirements.

[0003] The traditional sofa seat frame mainly has the following shortcomings:

[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 craftsmanship and skills to ensure that the seat frame 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 seat frame 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.

[0007] Secondly, the existing sofa seat frame, the frame of its main load-bearing component is generally arranged in a rectangular shape, such as a sofa seat frame with Chinese patent publication number CN210169507U, whose frame is connected to the armrest through a connector attached to one side of the armrest. This connection method usually involves fasteners such as bolts and screws, which pass through the connector and are then locked in the connecting hole of the armrest. However, due to the force transmission between the frame and the armrest, it is easy to cause the connecting hole to deform, which in turn causes the risk of the fastener loosening. When a fastener becomes loose, it will not only affect the overall stability of the sofa seat frame, but may also cause other fasteners to loosen one after another, forming a chain reaction. This chain reaction will further aggravate the deformation and damage of the sofa seat frame structure, reduce the service life of the sofa, and may even cause safety hazards. Utility Model Content

[0008] In order to overcome the deficiencies of the prior art, the utility model provides a sofa seat frame structure, which not only improves the production efficiency of the sofa seat frame and reduces the production cost, but also improves the structural stability of the sofa seat frame.

[0009] The technical solution of the utility model is as follows: a sofa seat frame structure, comprising two main bodies arranged parallel to each other, a leg support plate and a frame arranged between the two main bodies, the main body being provided with a storage slot and an installation slot connected to the storage slot, the frame comprising a frame body and fixed brackets arranged on the left and right sides of the frame body, the fixed brackets passing through the installation slots and extending into the storage slots, the fixed brackets being fixedly connected to the embedded nuts in the main body by fasteners; wherein the main body and the leg support plate are both integrally formed blow-molded parts.

[0010] Furthermore, the frame body includes two oppositely arranged support beams and two oppositely arranged connecting beams, the two ends of the connecting beams are respectively connected to the two support beams, and serpentine springs are installed on the two connecting beams. There are multiple serpentine springs, and the multiple serpentine springs are arranged at equal intervals.

[0011] Furthermore, it also includes a flip mechanism and a flip armrest, one end of the flip mechanism is connected to the fixed bracket, and the other end of the flip mechanism is connected to the flip armrest.

[0012] Furthermore, the fixing bracket includes a base and a limiting protrusion formed by bending the base by 90 degrees, and the base and the limiting protrusion cooperate to form a slot, and the slot is used to limit the flip mechanism.

[0013] Furthermore, the flipping mechanism includes a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are rotatably connected, the first connecting piece is inserted into the slot, and the first connecting piece is provided with a plurality of first connecting holes, the base is provided with a plurality of second connecting holes, and the plurality of first connecting holes and the plurality of second connecting holes are provided in a one-to-one correspondence.

[0014] Furthermore, the second connecting piece is provided with a plurality of third connecting holes, and the plurality of third connecting holes are used to insert fasteners so that the second connecting piece and the flip armrest are fixedly connected.

[0015] Furthermore, the frame is a sheet metal part.

[0016] Furthermore, the fixing bracket and the frame body are fixedly connected by welding.

[0017] Furthermore, a first mounting hole and a second mounting hole are provided on one side of the main body, the first mounting hole and the second mounting hole are both connected to the storage slot, the first mounting hole is used to install the charging seat, and the second mounting 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) Compared with the traditional sofa seat frame, the sofa seat frame structure provided by the utility model includes two main parts arranged parallel to each other, a leg support plate and a frame arranged between the two main parts. The main part and the leg support plate are blow-molded parts formed in one piece. Such a design ensures that the sofa seat frame can maintain a stable shape when under pressure. Since the main part and the leg support plate are blow-molded parts formed in one piece, the material is evenly distributed, and there is no need to connect them through complicated splicing processes and glue. In addition, there is no splicing gap in the main part, so that the sofa seat frame can withstand large loads and extend its service life. Secondly, the main part and the leg support plate are blow-molded parts formed in one piece, which only requires one set of molds and can be made through a one-time molding process, which greatly simplifies the production process, reduces production costs, and reduces material waste and labor costs in the production process.

[0020] (2) The utility model provides a sofa seat frame structure, in which a storage slot and an installation slot connected to the storage slot are provided in the main body, and the frame includes a frame body and fixed brackets provided on the left and right sides of the frame body, the fixed brackets pass through the installation slots and extend into the storage slots, and the fixed brackets are fixedly connected to the embedded nuts in the main body by fasteners. With this design, the frame can be set on the main body by the fixed brackets passing through the installation slots and extending into the storage slots, and then fixedly connected to the embedded nuts by fasteners. When the frame is subjected to a force from the vertical direction, part of the force can act on the inner wall of the installation slot, reducing the risk of the fasteners loosening due to excessive force, greatly enhancing the overall structural stability of the sofa seat frame, and reducing the risk of deformation of the connection parts and loosening of the fasteners due to long-term use or external forces. 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 It is a three-dimensional structural schematic diagram of a sofa seat frame structure in an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the frame body in the embodiment of the utility model;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of a sofa inner frame structure in an embodiment of the utility model.

[0025] In the figure, 1. main body; 11. storage slot; 12. mounting slot; 13. first mounting hole; 14. second mounting hole; 2. leg support plate; 3. frame; 31. frame body; 311. support beam; 312. connecting beam; 313. serpentine spring; 32. fixing bracket; 321. base; 3211. second connecting hole; 322. limiting protrusion; 4. flip mechanism; 41. first connecting plate; 411. first connecting hole; 42. second connecting plate; 421. third connecting hole; 5. flip armrest; 6. backrest body; 7. fixing bracket. DETAILED DESCRIPTION

[0026] 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.

[0027] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0028] See also Figure 1 As shown, a sofa seat frame structure provided by an embodiment of the utility model includes two main bodies 1 arranged parallel to each other, a leg support plate 2, and a frame 3 arranged between the two main bodies 1. The main body 1 and the leg support plate 2 are both blow-molded parts that are integrally formed. This design ensures that the sofa seat frame can maintain a stable shape when under pressure. Since the main body 1 and the leg support plate 2 are blow-molded parts that are integrally formed, the material is evenly distributed, and there is no need to connect them through complicated splicing processes and glue, and the main body 1 has no splicing gaps, so that the sofa seat frame can withstand large loads and extend its service life. Secondly, the main body 1 and the leg support plate 2 are blow-molded parts that are integrally formed, and only one set of molds is required to be manufactured through a one-time molding process, which greatly simplifies the production process, reduces production costs, and reduces material waste and labor costs in the production process.

[0029] Specifically, the sofa seat frame structure provided by the embodiment of the utility model has a storage slot 11 and a mounting slot 12 connected to the storage slot 11 in the main body 1, and the frame 3 includes a frame body 31 and fixed brackets 32 arranged on the left and right sides of the frame body 31, the fixed brackets 32 pass through the mounting slot 12 and extend into the storage slot 11, and the fixed brackets 32 are fixedly connected with the embedded nuts in the main body 1 through fasteners. In this design, the frame 3 can be set on the main body 1 by the fixed bracket 32 ​​passing through the mounting slot 12 and extending into the storage slot 11, and then fixedly connected with the embedded nuts by fasteners. When the frame 3 is subjected to a force from the vertical direction, part of the force can act on the inner wall of the mounting slot 12, reducing the risk of the fasteners loosening due to excessive force, greatly enhancing the overall structural stability of the sofa seat frame, and reducing the risk of deformation of the connection parts and loosening of the fasteners due to long-term use or external force.

[0030] See also Figure 2 As shown, the frame body 31 includes two supporting beams 311 and two connecting beams 312, both ends of the connecting beams 312 are connected to the two supporting beams 311, and the two connecting beams 312 are provided with serpentine springs 313, and the serpentine springs 313 are provided with a plurality of serpentine springs 313, and the plurality of serpentine springs 313 are arranged at equal intervals. With such a design, the frame body 31 forms a stable quadrilateral structure, ensuring that the frame body 31 is not easily deformed or damaged when subjected to external force, and a plurality of serpentine springs 313 are installed on the two connecting beams 312, and the serpentine springs 313 are arranged at equal intervals. Since the serpentine springs 313 have good elasticity, the elastic support characteristics of the serpentine springs 313 can significantly improve the comfort of the sofa. When a person sits on the sofa, the serpentine springs 313 can be deformed according to the weight of the human body, providing uniform support force, making the human body evenly stressed, and reducing fatigue.

[0031] See also Figure 1 As shown, it also includes a flip mechanism 4 and a flip armrest 5 , one end of the flip mechanism 4 is connected to the fixed bracket 32 ​​, and the other end of the flip mechanism 4 is connected to the flip armrest 5 .

[0032] In this embodiment, the fixed bracket 32 ​​includes a base 321 and a limiting protrusion 322 formed by bending the base 321 by 90 degrees. The base 321 and the limiting protrusion 322 cooperate to form a slot, which is used to limit the flip mechanism 4. With this design, when installing, the flip mechanism 4 is inserted into the slot, and the slot plays a guiding role, thereby simplifying the assembly process between the fixed bracket 32 ​​and the flip mechanism 4 and improving work efficiency. Secondly, the slot also plays a limiting role, which improves the connection firmness between the fixed bracket 32 ​​and the flip mechanism 4.

[0033] Preferably, the flip mechanism 4 includes a first connecting piece 41 and a second connecting piece 42, the first connecting piece 41 and the second connecting piece 42 are rotatably connected, the first connecting piece 41 is inserted into the slot, and the first connecting piece 41 is provided with a plurality of first connecting holes 411, the base 321 is provided with a plurality of second connecting holes 3211, and the plurality of first connecting holes 411 and the plurality of second connecting holes 3211 are provided one-to-one. With this design, when the flip mechanism 4 is installed, one end of the fastener passes through the first connecting hole 411 and the second connecting hole 3211 in sequence to be locked in the embedded nut of the main body 1, thereby ensuring reliable connection between the flip mechanism 4, the fixing bracket 32 ​​and the main body 1.

[0034] Preferably, the second connecting piece 42 is provided with a plurality of third connecting holes 421 , and the plurality of third connecting holes 421 are used to insert fasteners so that the second connecting piece 42 and the flip armrest 5 are fixedly connected.

[0035] Preferably, the frame 3 is a sheet metal part.

[0036] Preferably, the fixing bracket 32 ​​and the frame body 31 are fixedly connected by welding.

[0037] Preferably, a first mounting hole 13 and a second mounting hole 14 are provided on one side of the main body 1, and both the first mounting hole 13 and the second mounting hole 14 are connected to the storage slot 11, the first mounting hole 13 is used to install the charging seat, and the second mounting hole 14 is used to install the mobile phone holder.

[0038] For further explanation, the present invention also provides a sofa inner frame structure, see Figure 3 As shown, the sofa inner frame structure includes the above-mentioned sofa seat frame structure and backrest structure, the sofa seat frame structure and the backrest structure are fixedly connected by bolts, the backrest structure includes a backrest body 6 and a fixing frame 7 arranged on the backrest body 6, wherein the backrest body 6 is also an integrally formed blow-molded part, and the fixing frame 7 is a sheet metal part.

[0039] In this embodiment, a telescopic bracket (not shown in the figure) is installed in the sofa seat frame structure, and the telescopic bracket can drive the leg support plate 2 to move forward and flip from a vertical state to a horizontal state, thereby supporting the user's legs. Among them, the telescopic bracket is an existing structure, and those skilled in the art can select from a variety of existing telescopic brackets according to actual production needs and the specific functions of the sofa, and install and fix it in the sofa seat frame. Therefore, the specific structure of the telescopic bracket is not described here.

[0040] 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.

[0041] 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.

[0042] 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 seat frame structure, characterized in that: The invention comprises two main bodies (1) arranged in parallel with each other, a leg support plate (2) and a frame (3) arranged between the two main bodies (1); the main body (1) is provided with a storage groove (11) and a mounting groove (12) connected to the storage groove (11); the frame (3) comprises a frame body (31) and fixed brackets (32) arranged on the left and right sides of the frame body (31); the fixed brackets (32) pass through the mounting groove (12) and extend into the storage groove (11); the fixed brackets (32) are fixedly connected to the embedded nuts in the main body (1) by fasteners; wherein the main body (1) and the leg support plate (2) are both integrally formed blow-molded parts.

2. A sofa seat frame structure according to claim 1, characterized in that: The frame body (31) comprises two supporting beams (311) arranged opposite to each other and two connecting beams (312) arranged opposite to each other, the two ends of the connecting beam (312) are respectively connected to the two supporting beams (311), and serpentine springs (313) are installed on the two connecting beams (312), and a plurality of serpentine springs (313) are provided, and the plurality of serpentine springs (313) are arranged at equal intervals.

3. A sofa seat frame structure according to claim 1, characterized in that: It also comprises a flip mechanism (4) and a flip armrest (5), wherein one end of the flip mechanism (4) is connected to the fixed bracket (32), and the other end of the flip mechanism (4) is connected to the flip armrest (5).

4. A sofa seat frame structure as claimed in claim 3, characterized in that: The fixing bracket (32) comprises a base (321) and a limiting protrusion (322) formed by bending the base (321) by 90 degrees, and the base (321) and the limiting protrusion (322) cooperate to form a slot, and the slot is used to limit the flip mechanism (4).

5. A sofa seat frame structure as claimed in claim 4, characterized in that: The flip mechanism (4) comprises a first connecting piece (41) and a second connecting piece (42); the first connecting piece (41) and the second connecting piece (42) are rotatably connected; the first connecting piece (41) is inserted into the slot; the first connecting piece (41) is provided with a plurality of first connecting holes (411); the base (321) is provided with a plurality of second connecting holes (3211); the plurality of first connecting holes (411) and the plurality of second connecting holes (3211) are provided in a one-to-one correspondence.

6. A sofa seat frame structure as claimed in claim 5, characterized in that: The second connecting piece (42) is provided with a plurality of third connecting holes (421), and the plurality of third connecting holes (421) are used to insert fasteners so as to fix the second connecting piece (42) and the flip armrest (5) in connection.

7. The sofa seat frame structure according to claim 1, characterized in that: The frame (3) is a sheet metal part.

8. The sofa seat frame structure according to claim 1, characterized in that: The fixing bracket (32) and the frame body (31) are fixedly connected by welding.

9. The sofa seat frame structure according to claim 1, characterized in that: A first mounting hole (13) and a second mounting hole (14) are provided on one side of the main body (1); the first mounting hole (13) and the second mounting hole (14) are both connected to the storage slot (11); the first mounting hole (13) is used for mounting a charging seat, and the second mounting hole (14) is used for mounting a mobile phone holder.

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