Multifunctional sofa iron stand structure

Abstract

The invention provides a multifunctional sofa iron stand structure and relates to the technical field of furniture, the multifunctional sofa iron stand structure comprises a base and further comprises an adjusting assembly, the adjusting assembly comprises a rocker rotationally connected to the base, and a turnover plate is rotationally connected to the side, away from the rocker, of the base. An electric push rod is started, the output end of the electric push rod pushes a connecting plate and drives a first cross beam to rotate, then a lifting arm is made to rotate, a leg support plate is lifted through a jacking arm, after the leg support is completely opened, the limiting plate limits the leg support at the opening position, and the electric push rod continues driving; the seat frame, the rocker and the overturning plate are driven to move through a four-bar mechanism, the limiting plate is driven to move and be inserted into the second clamping groove when the overturning plate moves, the lifting arm is fixed through the limiting plate, locking of the leg support part of the sofa iron stand structure is achieved, and therefore the motion logic that the leg support is opened firstly and then the seat cushion is driven is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture, in particular to a multifunctional sofa iron frame structure. Background Art

[0002] The multifunctional sofa iron frame structure is mainly used to improve the stability and durability of the sofa. Traditional sofas mostly use wood or plastic frames, which are prone to moisture, aging or damage. The iron frame structure has stronger pressure resistance and corrosion resistance, can withstand a larger weight, and extend the service life. At the same time, the iron frame design can realize the multiple functions of the sofa, such as adjustable sitting position, folding, rotation, etc., to improve user comfort and practicality.

[0003] However, in actual use, the following deficiencies still exist, for example: existing functional sofas generally adopt tension springs to tighten the seat cushion movement mechanism and the fixed base, and control the movement logic of the leg rest and the seat cushion by increasing the driving force of the seat cushion movement to make it greater than the driving force of the leg rest movement, that is, the leg rest opens the seat cushion first and then moves. Due to different human body weights or differences in force, the seat cushion may move first or the process logic may be chaotic, affecting the riding experience. After long-term and frequent stretching of the tension spring, metal fatigue is prone to occur, resulting in weakened elasticity or even breakage. In particular, low-quality tension springs may fail after several months of use and need to be frequently replaced. The elastic characteristics of the tension spring determine the movement range of the leg rest and the flexibility of the angle adjustment. Every time the user adjusts the leg rest angle, he needs to overcome the elastic force of the tension spring, which is laborious and not smooth enough.

[0004] Therefore, the present invention proposes a multifunctional sofa iron frame structure to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to provide a multifunctional sofa iron frame structure.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a multifunctional sofa iron frame structure, including a base, and further comprising:

[0007] The adjusting assembly comprises a rocker rotatably connected to the base, a flip plate rotatably connected to the side of the base away from the rocker, a seat frame rotatably connected to the rocker, a lifting arm is provided on the seat frame, and one end of the lifting arm away from the first crossbeam is rotatably connected to the jacking arm, the other end of the jacking arm is rotatably connected to the leg support plate, the leg support plate is rotatably connected to a pad, the side of the pad plate close to the bottom is rotatably connected to the rocker arm, the other end of the rocker arm is rotatably connected to the swing arm, the swing arm is rotatably connected to the leg support plate, the leg support plate is rotatably connected to a guide frame, and the other end of the guide frame is rotatably connected to a synchronous frame;

[0008] A first slot is formed on the flip plate, a side of the seat frame close to the first slot is rotatably connected to a limit plate, a second slot is formed on the lifting arm, and the limit plate is arranged between the first slot and the second slot;

[0009] A backrest plug-in assembly, the backrest plug-in assembly includes a first limiting groove opened on the seat frame, a second limiting groove is opened on the side of the seat frame close to the first limiting groove, a support rod is provided on the seat frame, a first limiting rod is fixed on the support rod, and the first limiting rod is arranged in the first limiting groove.

[0010] Furthermore, an electric push rod is provided on the seat frame, and a connecting plate is provided at the output end of the electric push rod.

[0011] The beneficial effect of adopting the above further scheme is: when the electric push rod is extended, it pushes the connecting plate connected to the output end to move. The connecting plate serves as an intermediate transmission component, converting the linear motion of the electric push rod into the driving force of the mechanical structure, so that the output end of the electric push rod pushes the connecting plate, driving the first beam to rotate.

[0012] Furthermore, a first crossbeam is provided on the connecting plate.

[0013] The beneficial effect of adopting the above-mentioned further scheme is: the first crossbeam is fixed on the connecting plate, and the first crossbeam rotates with the movement of the connecting plate. The rotation of the first crossbeam drives the lifting arm installed thereon to rotate, and the rotational movement of the lifting arm further pushes the synchronous frame connected thereto, thereby triggering the deployment of the leg support mechanism.

[0014] Furthermore, the lifting arm is arranged on the first crossbeam, the synchronous frame is rotatably connected to the seat frame, and the synchronous frame is rotatably connected to the lifting arm.

[0015] The beneficial effect of adopting the above-mentioned further scheme is that the synchronous frame is rotatably connected to the seat frame and the lifting arm respectively. When the lifting arm pushes the synchronous frame, its rotational motion is converted into a compound motion of the lifting arm, so that the leg rest is unfolded first. After it reaches a certain angle, the electric push rod continues to drive, driving the seat frame, rocker and flip plate to perform a four-bar linkage movement. When the flip plate moves, it drives the limit plate to move and insert into the second slot. The limit plate fixes the lifting arm to achieve locking of the leg rest part of the sofa iron frame structure.

[0016] Furthermore, a second limiting rod is fixed on the support rod, and the second limiting rod is arranged in the second limiting groove.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that the second limit rod fixed on the support rod is embedded in the second limit groove and slides, allowing the support rod to be lifted quickly in the initial stage, and after reaching a certain position, the second limit groove restricts the support rod from continuing to move, and the second limit groove guides the support rod to fall back, ensuring that the seat cushion is reset first and the leg rest is then folded to achieve orderly storage.

[0018] Furthermore, a second crossbeam is provided on the rocker.

[0019] The beneficial effect of adopting the above further solution is: the rocker is linked with the synchronous frame. When the leg rest is unfolded into place, the rocker begins to swing and drives the second crossbeam to rotate. The second crossbeam serves as the driving component for the seat cushion movement, and its rotation angle determines the degree of inclination of the seat cushion.

[0020] Furthermore, a pull rod is rotatably connected to the second crossbeam, and the other end of the pull rod is rotatably connected to the support rod.

[0021] The beneficial effect of adopting the above further solution is: since the movement of the rocker is controlled by the synchronization frame, when the sofa iron frame is unfolded, the leg rest unfolds first and then moves the seat cushion; when the sofa iron frame is closed, the rocker is reset first, causing the seat cushion to drop first and the leg rest to retract later.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are:

[0023] 1. In the present invention, when the sofa iron frame needs to be adjusted, the limit plate is in the first slot to lock the flip plate, the electric push rod is started, and its output end pushes the connecting plate, driving the first crossbeam to rotate, and then the lifting arm is rotated, and the leg rest plate is lifted by the lifting arm. When the leg rest is fully opened, the limit plate limits the leg rest in the open position, and the electric push rod continues to drive, driving the seat frame, rocker and flip plate to perform a four-bar linkage movement. When the flip plate moves, the limit plate is driven to move and insert into the second slot. The limit plate fixes the lifting arm to lock the leg rest part of the sofa iron frame structure, thereby realizing the movement logic of opening the leg rest first and then driving the seat cushion, eliminating the problem of confusion in the movement logic of the leg rest and seat cushion that may occur when the conventional iron frame is controlled by spring tension.

[0024] 2. In the present invention, the rocker is connected to the pull rod through the second crossbeam, and the other end of the pull rod is connected to the support rod. When the electric push rod drives the seat frame to recline, the rocker drives the pull rod to pull the support rod, so that the first limit rod and the second limit rod slide in the first limit groove and the second limit groove respectively, and the seat angle is adjusted synchronously to ensure the linkage and coordination between the backrest and the leg rest, improve the smoothness of the movement, and ensure the stability and safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a multifunctional sofa iron frame structure of the present invention;

[0026] Figure 2 This is a structural side view of a multifunctional sofa iron frame structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of an adjustment component of a multifunctional sofa iron frame structure of the present invention;

[0028] Figure 4 This is a structural schematic diagram of a backrest plug-in assembly of a multifunctional sofa iron frame structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the backing plate structure of a multifunctional sofa iron frame structure of the present invention;

[0030] Figure 6 The figure is a schematic diagram of the locking structure of a multifunctional sofa iron frame structure of the present invention.

[0031] Reference numerals:

[0032] 1. Base;

[0033] 2. Adjustment assembly; 21. Rocker; 22. Flip plate; 23. Seat frame; 24. Electric push rod; 25. First crossbeam; 26. Connecting plate; 27. Lifting arm; 28. First slot; 29. ​​Limiting plate; 210. Second slot; 211. Lifting arm; 212. Leg support plate; 213. Pad; 214. Rocker arm; 215. Swing arm; 216. Guide frame; 217. Synchronous frame;

[0034] 3. Backrest plug-in assembly; 31. First limiting groove; 32. Second limiting groove; 33. Support rod; 34. First limiting rod; 35. Second limiting rod; 36. Second crossbeam; 37. Pull rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figures 1-6 As shown, this embodiment provides a technical solution: a multifunctional sofa iron frame structure, including a base 1, and also including:

[0037] The adjusting assembly 2 includes a rocker 21 rotatably connected to the base 1, a flip plate 22 rotatably connected to the side of the base 1 away from the rocker 21, a seat frame 23 rotatably connected to the rocker 21, a lifting arm 27 is provided on the seat frame 23, and an end of the lifting arm 27 away from the first crossbeam 25 is rotatably connected to a lifting arm 211, and the other end of the lifting arm 211 is rotatably connected to a leg support plate 212, and a pad 213 is rotatably connected to the leg support plate 212, and a rocker 214 is rotatably connected to the side of the pad 213 near the bottom, and the other end of the rocker 214 is rotatably connected to a swing arm 215, and the swing arm 215 is rotatably connected to the leg support plate 212, and a guide frame 216 is rotatably connected to the leg support plate 212, and the other end of the guide frame 216 is rotatably connected to a synchronous frame 217;

[0038] A first slot 28 is defined on the flip plate 22. A side of the seat frame 23 near the first slot 28 is rotatably connected to a limit plate 29. A second slot 210 is defined on the lifting arm 27. The limit plate 29 is disposed between the first slot 28 and the second slot 210.

[0039] The backrest plug-in assembly 3 includes a first limiting groove 31 provided on the seat frame 23, a second limiting groove 32 is provided on the side of the seat frame 23 close to the first limiting groove 31, a support rod 33 is provided on the seat frame 23, a first limiting rod 34 is fixed on the support rod 33, and the first limiting rod 34 is provided in the first limiting groove 31. When the sofa iron frame needs to be adjusted, the limiting plate 29 is in the first slot 28 to lock the flip plate 22, and the electric push rod 24 is started. The output end of the electric push rod 24 pushes the connecting plate 26, drives the first crossbeam 25 to rotate, and then rotates the lifting arm 27, and the top The lifting arm 211 lifts the leg rest 212. When the leg rest is fully opened, the limit plate 29 limits the leg rest in the open position. The electric push rod 24 continues to drive, driving the seat frame 23, the rocker 21 and the flip plate 22 to move the four-bar mechanism. When the flip plate 22 moves, it drives the limit plate 29 to move and insert into the second slot 210. The limit plate 29 fixes the lifting arm 27 to lock the leg rest part of the sofa iron frame structure, thereby realizing the movement logic of opening the leg rest first and then driving the seat cushion, eliminating the problem of confusion in the movement logic of the leg rest and seat cushion that may occur when the conventional iron frame is controlled by spring tension.

[0040] like Figure 1-Figure 3As shown, an electric push rod 24 is provided on the seat frame 23, and a connecting plate 26 is provided at the output end of the electric push rod 24. When the electric push rod 24 is extended, it pushes the connecting plate 26 connected to the output end to move. The connecting plate 26 serves as an intermediate transmission component, which converts the linear motion of the electric push rod 24 into a driving force of the mechanical structure, so that the output end of the electric push rod 24 pushes the connecting plate 26, driving the first crossbeam 25 to rotate. A first crossbeam 25 is provided on the connecting plate 26, and the first crossbeam 25 is fixed on the connecting plate 26. The first crossbeam 25 rotates with the movement of the connecting plate 26. The rotation of the first crossbeam 25 drives the lifting arm 27 installed thereon to rotate, and the rotation of the lifting arm 27 further pushes the synchronous frame 217 connected thereto, thereby triggering To unfold the leg rest mechanism, the lifting arm 27 is set on the first crossbeam 25, the synchronous frame 217 is rotatably connected to the seat frame 23, the synchronous frame 217 is rotatably connected to the lifting arm 211, and the synchronous frame 217 is rotatably connected to the seat frame 23 and the lifting arm 211 respectively. When the lifting arm 27 pushes the synchronous frame 217, its rotational motion is converted into a compound motion of the lifting arm 211, so that the leg rest is unfolded first. After it reaches a certain angle, the electric push rod 24 continues to drive, driving the seat frame 23, the rocker 21 and the flip plate 22 to perform a four-bar linkage movement. When the flip plate 22 moves, it drives the limit plate 29 to move and insert into the second slot 210. The limit plate 29 fixes the lifting arm 27 to achieve locking of the leg rest part of the sofa iron frame structure.

[0041] like Figure 1-Figure 2 as well as Figure 4 As shown, a second limiting rod 35 is fixed on the support rod 33, and the second limiting rod 35 is arranged in the second limiting groove 32. The second limiting rod 35 fixed on the support rod 33 is embedded in the second limiting groove 32 and slides. In the initial stage, the support rod 33 is allowed to rise quickly. After reaching a certain position, the second limiting groove 32 limits the support rod 33 from continuing to move. The second limiting groove 32 guides the support rod 33 to fall back, ensuring that the seat cushion is reset first and the leg support is folded subsequently to achieve orderly storage. A second crossbeam 36 is provided on the rocker 21, and the rocker 21 is connected to the synchronous frame 217. Linkage, when the leg rest is unfolded into place, the rocker 21 starts to swing and drives the second crossbeam 36 to rotate. The second crossbeam 36 serves as a driving component for the movement of the seat cushion. Its rotation angle determines the inclination of the seat cushion. The second crossbeam 36 is rotatably connected to a pull rod 37, and the other end of the pull rod 37 is rotatably connected to the support rod 33. Since the movement of the rocker 21 is controlled by the synchronous frame 217, when the sofa iron frame is unfolded, the leg rest unfolds the seat cushion first and then moves. When the sofa iron frame is closed, the rocker 21 is reset first, causing the seat cushion to drop first and the leg rest to retract afterwards.

[0042] Working principle:

[0043] like Figures 1-6As shown, during the unfolding process, first, the limit plate 29 is in the first slot 28, locking the flip plate 22. At this time, the electric push rod 24 is started, and its output end pushes the connecting plate 26 to move. Since the first crossbeam 25 is fixed on the connecting plate 26, the first crossbeam 25 rotates accordingly, and the rotation of the first crossbeam 25 drives the lifting arm 27 to rotate, and the lifting arm 27 then pushes the synchronous frame 217. The synchronous frame 217 is rotatably connected to the lifting arm 211, so that the lifting arm 211 produces a compound movement, lifting the leg support plate 212. When the leg support is fully opened, the electric push rod 2 4 continues to drive, driving the seat frame 23, the rocker 21 and the flip plate 22 to perform the four-bar linkage movement. During the movement of the flip plate 22, the limit plate 29 is driven to move and insert into the second slot 210, fixing the lifting arm 27 to lock the leg rest and ensure the stability of the leg rest. At the same time, the rocker 21 is linked with the synchronization frame 217. When the leg rest is fully deployed, the rocker 21 swings, driving the second crossbeam 36 on it to rotate. The second crossbeam 36 pulls the support rod 33 by rotating the connected pull rod 37 to achieve the tilt adjustment of the seat cushion, completing the deployment of the sofa iron frame.

[0044] When storing, since the second limit rod 35 fixed on the support rod 33 is embedded in the second limit groove 32 and slides, the support rod 33 is allowed to rise quickly in the initial stage. When it reaches a certain position, the second limit groove 32 restricts the support rod 33 from continuing to move and guides it to fall back, so that the seat cushion is reset first. At this time, the electric push rod 24 drives in the reverse direction, driving each component to move in the reverse direction. The rocker 21 is reset first, and driven by it, the leg rest is then retracted, completing the entire storage process. This eliminates the problem of movement logic confusion that may occur when a conventional iron frame is controlled by spring tension, and realizes the orderly deployment and storage of the leg rest and seat cushion.

[0045] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multifunctional sofa iron frame structure, comprising a base (1), characterized in that: Also includes: An adjustment assembly (2) includes a rocker (21) rotatably connected to a base (1), a flip plate (22) rotatably connected to a side of the base (1) away from the rocker (21), a seat frame (23) rotatably connected to the rocker (21), a lifting arm (27) provided on the seat frame (23), an end of the lifting arm (27) away from the first crossbeam (25) rotatably connected to a lifting arm (211), and the other end of the lifting arm (211) rotatably connected to a lifting arm (211). A leg support plate (212) is connected, a backing plate (213) is rotatably connected to the leg support plate (212), a rocker arm (214) is rotatably connected to one side of the backing plate (213) near the bottom, the other end of the rocker arm (214) is rotatably connected to a swing arm (215), the swing arm (215) is rotatably connected to the leg support plate (212), a guide frame (216) is rotatably connected to the leg support plate (212), and the other end of the guide frame (216) is rotatably connected to a synchronous frame (217); A first slot (28) is provided on the flip plate (22); a side of the seat frame (23) close to the first slot (28) is rotatably connected to a limit plate (29); a second slot (210) is provided on the lifting arm (27); and the limit plate (29) is arranged between the first slot (28) and the second slot (210); A backrest plug-in assembly (3) includes a first limiting groove (31) provided on a seat frame (23), a second limiting groove (32) provided on a side of the seat frame (23) close to the first limiting groove (31), a support rod (33) provided on the seat frame (23), a first limiting rod (34) fixed on the support rod (33), and the first limiting rod (34) provided in the first limiting groove (31).

2. The multifunctional sofa iron frame structure according to claim 1, characterized in that: An electric push rod (24) is provided on the seat frame (23), and a connecting plate (26) is provided at the output end of the electric push rod (24).

3. The multifunctional sofa iron frame structure according to claim 2, characterized in that: A first crossbeam (25) is provided on the connecting plate (26).

4. The multifunctional sofa iron frame structure according to claim 3, characterized in that: The lifting arm (27) is arranged on the first crossbeam (25), the synchronous frame (217) is rotatably connected to the seat frame (23), and the synchronous frame (217) is rotatably connected to the lifting arm (211).

5. The multifunctional sofa iron frame structure according to claim 4, characterized in that: A second limiting rod (35) is fixed on the support rod (33), and the second limiting rod (35) is arranged in the second limiting groove (32).

6. The multifunctional sofa iron frame structure according to claim 3, characterized in that: A second crossbeam (36) is provided on the rocker (21).

7. The multifunctional sofa iron frame structure according to claim 6, characterized in that: A pull rod (37) is rotatably connected to the second cross beam (36), and the other end of the pull rod (37) is rotatably connected to the support rod (33).

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