A sofa inner frame

Abstract

This application discloses a sofa inner frame, including a seat frame, a sealing plate on the front of the seat frame, and several connecting tenons on the left and right sides of the seat frame. A backrest frame is connected to the back of the seat frame, and several connecting tenons are also provided on the left and right sides of the backrest frame. A first side panel is provided on the left or right side of the seat frame and the backrest frame, and a second side panel is provided on the other side. Connecting mortises adapted to the connecting tenons are provided on the first side panel and the second side panel. The sofa inner frame also includes an armrest frame, which is located on the left or right side of the seat frame and connected to the seat frame. This application achieves the insertion connection between the seat frame and each side panel, and between the backrest frame and each side panel, by the cooperation of the connecting tenons and the connecting mortises, eliminating the need for brad nails for connection and reinforcement. The mortise and tenon structure not only makes the connection more stable, but also reduces the impact force when entering the wood, avoiding damage to the wood and thus protecting the sofa inner frame and improving its stability.

Description

Technical Field

[0001] This application relates to the field of furniture technology, specifically to a sofa inner frame. Background Technology

[0002] Sofas are a common piece of furniture in daily life. Sofas mainly consist of an inner frame and a sponge cushion set on the inner frame. The inner frame of a sofa is usually made of solid wood, and the various pieces of solid wood are usually fixed together with nails. However, since nails are generally driven into the wood with a high initial velocity, their strong impact can easily damage the wood. Especially when nails are driven into the edge of the wood, the nails are very likely to break the wood, resulting in poor structural stability of the entire inner frame of the sofa. Utility Model Content

[0003] The main purpose of this application is to provide a sofa inner frame that addresses the shortcomings of poor stability in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A sofa inner frame, comprising:

[0006] The seat frame has a sealing plate on its front side and several connecting tenons on its left and right sides.

[0007] A backrest frame is provided on the rear side of the seat frame and connected to the seat frame; the left and right sides of the backrest frame are provided with several connecting tenons.

[0008] The first side plate is provided with a plurality of connecting tenons, and the first side plate is connected to the seat frame and the backrest frame respectively through the connecting tenons.

[0009] The second side plate is provided with a plurality of connecting tenons, and the second side plate is connected to the seat frame and the backrest frame respectively through each of the connecting tenons.

[0010] An armrest frame is provided on the left or right side of the seat frame; the armrest frame is connected to the seat frame.

[0011] Optionally, the frame includes a base and a support frame connected to each other, and the support frame is further provided with an upper frame; along the length direction of the base and the upper frame, each of the connecting tenons is placed at both ends of the base and the upper frame.

[0012] Optionally, the support frame includes a base plate and a support block. Along the length of the base plate, both ends of the base plate are provided with tenons. The base is provided with tenon grooves that are adapted to the tenons. The support block is disposed on the top surface of the base plate. The top of the support block is provided with a slot, and the upper frame is inserted into the slot.

[0013] Optionally, the base includes two horizontal connecting strips and two vertical connecting strips, with the two horizontal connecting strips arranged in parallel and the two vertical connecting strips arranged between the two horizontal connecting strips; any adjacent horizontal connecting strip and the vertical connecting strip are connected to each other by interlocking tenons through mutually cooperating mortises.

[0014] Optionally, the upper frame includes two horizontal connecting strips and two vertical connecting strips. The two horizontal connecting strips are arranged in parallel, and the two vertical connecting strips are arranged between the two horizontal connecting strips. Any adjacent horizontal connecting strip and the vertical connecting strip are connected to each other by interlocking tenons through mutually cooperating mortises.

[0015] Optionally, the backrest frame includes a first reinforcing plate and a plurality of first connecting strips. The first reinforcing plate is provided with a plurality of first limiting grooves, and each of the first connecting strips is respectively inserted into each of the first limiting grooves.

[0016] Optionally, the backrest frame also includes a second connecting strip, and the reinforcing plate is provided with a second limiting groove, into which the second connecting strip is inserted.

[0017] Optionally, a reinforcing plate is provided on both the first side plate and the second side plate, and the reinforcing plate is connected to the first side plate and the second side plate respectively by self-tapping screws.

[0018] Optionally, the handrail includes a second reinforcing plate and several support bars. Each side of the second reinforcing plate is provided with several insertion slots, and each support bar is inserted into each insertion slot. Along the length of each support bar, each support bar is provided with a connecting tenon at both ends. Each end of the handrail is provided with a sealing plate, and each sealing plate is provided with several connecting tenons that are adapted to the connecting tenons.

[0019] Optionally, along the length of the handrail frame, the top, left, and right sides of the handrail frame are all connected with side sealing plates by self-tapping screws; the bottom surfaces of the handrail frame and the base are both provided with connecting grooves, and the two connecting grooves are snapped together with the same connecting plate.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] This application includes a seat frame, the front of which is provided with a sealing plate, and the left and right sides of which are provided with a plurality of connecting tenons. The back of the seat frame is connected to a backrest frame, the left and right sides of which are provided with a plurality of connecting tenons. The left or right side of the seat frame and the backrest frame is provided with a first side plate, and the other side is provided with a second side plate. The first side plate and the second side plate are provided with connecting tenons that are adapted to the connecting tenons. The inner frame of the sofa also includes an armrest frame, which is provided on the left or right side of the seat frame. The armrest frame is connected to the seat frame.

[0022] Compared with the prior art, this application achieves the interlocking connection between the seat frame and each side panel, and between the backrest frame and each side panel by the cooperation of the connecting tenon and the connecting mortise, eliminating the need for a large number of nails for connection and reinforcement. Compared with nails, the mortise and tenon structure is not only more stable in connection, but also has less impact force when entering the wood, which can avoid damage to the wood and thus protect the inner frame of the sofa and improve the stability of the inner frame of the sofa.

[0023] Secondly, during installation, the mortise and tenon structure has good positioning ability, which can effectively reduce the assembly difficulty of each component and improve production efficiency and assembly quality.

[0024] Finally, for assembly in areas where visibility is obstructed, this application can effectively prevent nails from damaging the wood, thereby protecting the sofa's inner frame and improving its stability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a sofa inner frame provided in Embodiment 1 of this application;

[0026] Figure 2 An exploded view of a sofa inner frame provided in Embodiment 1 of this application;

[0027] Figure 3 Exploded view of the frame;

[0028] Figure 4 Exploded view of the backrest frame;

[0029] Figure 5 This is an exploded view of the handrail frame.

[0030] Figure 6 A bottom view of a sofa inner frame provided for Embodiment 1 of this application.

[0031] Reference numerals: 1-Seat frame, 2-Connecting tenon, 3-Backrest frame, 4-First side plate, 5-Connecting tenon, 6-Second side plate, 7-Armrest frame, 8-Interlocking tenon, 9-Interlocking tenon, 10-Transverse connecting strip, 11-Vertical connecting strip, 12-Reinforcing plate, 13-Self-tapping screw, 111-Base, 112-Support frame, 113-Upper frame, 1131-Base plate, 1132-Support block, 1133-Slot, 301-First reinforcing plate, 302-First connecting strip, 303-First limiting groove, 304-Second connecting strip, 305-Second limiting groove, 701-Second reinforcing plate, 702-Supporting strip, 703-Interlocking groove, 704-Sealing plate, 705-Side sealing plate, 706-Connecting groove, 707-Connecting plate.

[0032] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] Implementation Method 1

[0038] Reference Figures 1 to 6 This embodiment is an optional embodiment of this application, which discloses a sofa inner frame, including a seat frame 1, a backrest frame 3 and an armrest frame 7. The seat frame 1 includes a base 111, a support frame 112 and an upper frame 113, wherein the base 111, the support frame 112 and the upper frame 113 are arranged sequentially from bottom to top.

[0039] The base 111 has a rectangular structure and includes two horizontal connecting bars 10 and two vertical connecting bars 11. The two horizontal connecting bars 10 are arranged in parallel, and the two vertical connecting bars 11 are arranged between the two horizontal connecting bars 10. Along the length direction of the two horizontal connecting bars 10, there are tenon grooves 9 at both ends. The two tenon grooves 9 are arranged along the width direction of the horizontal connecting bars 10 and pass through the horizontal connecting bars 10.

[0040] Along the length direction of the two longitudinal connecting strips 11, both ends of the two longitudinal connecting strips 11 are provided with tenons 8; any adjacent transverse connecting strips 10 and longitudinal connecting strips 11 are connected to each other by interlocking tenons 9 and tenons 8, thereby forming a rectangular base 111.

[0041] It should be noted that the structure of the upper frame 113 is exactly the same as that of the base 111, except that the structural dimensions are adjusted accordingly as needed;

[0042] The support frame 112 includes a base plate 1131 and a support block 1132. Along the length of the base plate 1131, both ends of the base plate 1131 are provided with tenons 8. The middle of the two transverse connecting strips 10 of the base 111 is provided with tenon grooves 9. The two tenons 8 of the base plate 1131 are respectively inserted into the two tenon grooves 9, thereby connecting the base plate 1131 and the base 111, which helps to improve the stability and reliability of the connection.

[0043] The support block 1132 is disposed on the top surface of the base plate 1131. Along the length direction of the support block 1132, slots 1133 are provided at both ends of the top surface of the support block 1132. The two transverse connecting strips 10 of the upper frame 113 are respectively inserted into the two slots 1133. At the same time, the upper frame 113 and the support block 1132 are fixed by self-tapping screws 13, thereby completing the assembly of the entire frame 1.

[0044] A sealing plate 704 is also connected to the front end face of the bracket 1 by a number of self-tapping screws 13;

[0045] It should be noted that in this application, the left side, right side, front and back are defined according to the following rules: based on the sitting posture of a person when using the sofa, the front is the area directly in front of the person's line of sight, the back is the side behind the person, and correspondingly, the left side is the side of the person's left hand and the other side is the right side.

[0046] The backrest frame 3 is also provided on the rear side of the seat frame 1. The backrest frame 3 includes a first reinforcing plate 301 and a plurality of first connecting strips 302. The first reinforcing plate 301 is vertically arranged and its bottom surface is connected to the base 111. The back and front of the base plate 1131 are provided with first limiting grooves 303, and each of the first connecting strips 302 is respectively inserted into each of the first limiting grooves 303.

[0047] The backrest frame 3 is also provided with a back panel on its rear side, and the back panel is connected to the first connecting strip 302 by self-tapping screws 13.

[0048] Each of the first connecting strips 302 and each of the transverse connecting strips 10 are arranged in parallel; along the length direction of the first connecting strip 302 and each of the transverse connecting strips, a connecting tenon 2 is provided at both ends of the first connecting strip 302 and each of the transverse connecting strips; thus forming a plurality of connecting tenons 2 on both the left and right sides of the frame 1.

[0049] Furthermore, the sofa inner frame also includes a first side panel 4 and a second side panel 6. Both the first side panel 4 and the second side panel 6 are provided with a plurality of connecting tenons 5. The first side panel 4 is located on the left or right side of the seat frame 1, and the second side panel 6 is located on the other side. The first side panel 4 is connected to the seat frame 1 and the backrest frame 3 by each of the connecting tenons 5; the second side panel 6 is connected to the seat frame 1 and the backrest frame 3 by each of the connecting tenons 5.

[0050] Meanwhile, several self-tapping screws 13 are also provided on the first side plate 4 and the second side plate 6 to improve the stability of the connection.

[0051] Furthermore, the backrest frame 3 also includes a second connecting strip 304, and a second limiting groove 305 is provided on the reinforcing plate, the second connecting strip 304 being inserted into the second limiting groove 305;

[0052] The second connecting strip 304 can further improve the stability of the backrest, thereby improving the structural stability of the entire sofa frame;

[0053] Meanwhile, the self-tapping screw 13 causes less damage to the wooden frame of the sofa, which helps to improve the connection stability of the sofa frame.

[0054] Furthermore, both the first side plate 4 and the second side plate 6 are provided with reinforcing plates, and the reinforcing plates 12 are provided on the opposite side of the first side plate 4 and the second side plate 6; the reinforcing plates 12 are connected to the first side plate 4 and the second side plate 6 respectively by self-tapping screws 13.

[0055] Furthermore, the handrail frame 7 includes a second reinforcing plate 701 and a plurality of support bars 702. Each side of the second reinforcing plate 701 is provided with a plurality of insertion slots 703, and each of the support bars 702 is inserted into each of the insertion slots 703. Each of the support bars 702 is arranged along the front-back direction of the seat frame 1, and each of the support bars 702 is parallel to each other.

[0056] Along the length of each support bar 702, each support bar 702 is provided with a connecting tenon 2 at both ends, and each handrail frame 7 is provided with a sealing plate 704 at both ends. Each sealing plate 704 is provided with a plurality of connecting tenons 5 that are adapted to the connecting tenons 2. That is, through the mutual cooperation of the connecting tenons 2 and the connecting tenons 5, both ends of the handrail frame 7 are inserted into the sealing plate 704.

[0057] The top, left and right sides of the handrail frame 7 are provided with side sealing plates 705, and each side sealing plate 705 is fixed by self-tapping screws 13. At the same time, the bottom surfaces of the handrail frame 7 and the base 111 are provided with connecting grooves 706. The two connecting grooves 706 are snapped together with the same connecting plate 707, thereby realizing the connection between the handrail frame 7 and the base 111.

[0058] Compared with the prior art, this application achieves the interlocking connection between the seat frame and each side panel, and between the backrest frame and each side panel by the cooperation of the connecting tenon and the connecting mortise, without the need to use a large number of nails for connection and reinforcement. Compared with nails, the mortise and tenon structure is not only more stable in connection, but also has less impact force when entering the wood, which can avoid damage to the wood and thus protect the inner frame of the sofa and improve the stability of the inner frame of the sofa.

[0059] Secondly, during the installation process, the mortise and tenon structure has good positioning ability, which can effectively reduce the assembly difficulty of each component and improve production efficiency and assembly quality.

[0060] Finally, for assembly in areas where visibility is obstructed, this application can effectively prevent nails from damaging the wood, thereby protecting the sofa's inner frame and improving its stability.

[0061] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A sofa inner frame, characterized in that, include: A seat frame (1) is provided with a sealing plate (704) on the front side, and a number of connecting tenons (2) are provided on the left and right sides of the seat frame (1). Backrest frame (3), the backrest frame (3) is located on the rear side of the seat frame (1) and connected to the seat frame (1); the backrest frame (3) is provided with several connecting tenons (2) on the left and right sides; The first side plate (4) is provided with a plurality of connecting tenons (5), and the first side plate (4) is connected to the seat frame (1) and the backrest frame (3) respectively through the connecting tenons (5); The second side plate (6) is provided with a plurality of connecting tenons (5), and the second side plate (6) is connected to the seat frame (1) and the backrest frame (3) respectively through the connecting tenons (5); Handrail (7) is provided on the left or right side of the seat frame (1); the handrail (7) is connected to the seat frame (1).

2. A sofa inner frame according to claim 1, characterized in that, The frame (1) includes a base (111) and a support frame (112) connected to each other. The support frame (112) is also provided with an upper frame (113). Along the length direction of the base (111) and the upper frame (113), each of the connecting tenons (2) is placed at both ends of the base (111) and the upper frame (113).

3. A sofa inner frame according to claim 2, characterized in that, The support frame (112) includes a base plate (1131) and a support block (1132). Along the length of the base plate (1131), both ends of the base plate (1131) are provided with tenons (8). The base (111) is provided with tenon grooves (9) that are adapted to the tenons (8). The support block (1132) is located on the top surface of the base plate (1131). The top of the support block (1132) is provided with a slot (1133). The upper frame (113) is inserted into the slot (1133).

4. A sofa inner frame according to claim 3, characterized in that, The base (111) includes two horizontal connecting strips (10) and two vertical connecting strips (11). The two horizontal connecting strips (10) are arranged in parallel, and the two vertical connecting strips (11) are arranged between the two horizontal connecting strips (10). Any adjacent horizontal connecting strip (10) and vertical connecting strip (11) are connected to the tenon (8) through mutually cooperating mortise and tenon grooves (9).

5. A sofa inner frame according to claim 3, characterized in that, The upper frame (113) includes two horizontal connecting strips (10) and two vertical connecting strips (11). The two horizontal connecting strips (10) are arranged in parallel, and the two vertical connecting strips (11) are arranged between the two horizontal connecting strips (10). Any adjacent horizontal connecting strip (10) and vertical connecting strip (11) are connected to the tenon (8) through mutually cooperating mortise and tenon grooves (9).

6. A sofa inner frame according to claim 1, characterized in that, The backrest frame (3) includes a first reinforcing plate (301) and a plurality of first connecting strips (302). The first reinforcing plate (301) is provided with a plurality of first limiting grooves (303), and each of the first connecting strips (302) is respectively inserted into each of the first limiting grooves (303).

7. A sofa inner frame according to claim 6, characterized in that, The backrest frame (3) also includes a second connecting strip (304), and a second limiting groove (305) is provided on the reinforcing plate, and the second connecting strip (304) is inserted into the second limiting groove (305).

8. A sofa inner frame according to claim 1, characterized in that, Both the first side plate (4) and the second side plate (6) are provided with reinforcing plates (12), and the reinforcing plates (12) are connected to the first side plate (4) and the second side plate (6) respectively by self-tapping screws (13).

9. A sofa inner frame according to claim 2, characterized in that, The handrail frame (7) includes a second reinforcing plate (701) and a plurality of support bars (702). Each side of the second reinforcing plate (701) is provided with a plurality of insertion slots (703), and each support bar (702) is inserted into each insertion slot (703). Along the length direction of each support bar (702), each end of each support bar (702) is provided with a connecting tenon (2). Both ends of the handrail frame (7) are provided with sealing plates (704), and each sealing plate (704) is provided with a plurality of connecting tenons (5) that are adapted to the connecting tenons (2).

10. A sofa inner frame according to claim 9, characterized in that, Along the length of the handrail (7), the top, left and right sides of the handrail (7) are connected to side sealing plates (705) by self-tapping screws (13); the bottom surfaces of the handrail (7) and the base (111) are provided with connecting grooves (706), and the two connecting grooves (706) are snapped together with the same connecting plate (707).

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