Sofa iron stand structure, sofa and production method

Abstract

The invention relates to the technical field of sofa production, and discloses a sofa iron stand structure, a sofa and a production method, the sofa iron stand structure comprises a frame, a connecting plate and a base, in the sofa iron stand structure, a push ring is pulled along a guide groove to be far away from a lifting groove, and limiting on a ball is released, so that a connecting column can be pulled out of a sleeve, and the sofa base is disassembled. The push ring is pulled along the guide groove, the connecting column is inserted into the sleeve and stops when abutting against the limiting block, the clamping groove is aligned with the lifting groove at the moment, after the push ring is loosened, the resilience force of the compression spring pushes the push ring to extrude the ball, the ball is clamped with the clamping groove, and rapid installation of the sofa iron stand and the base is completed. The toothed plate moves to drive the sliding frame to move along the sliding rail, the sofa cushion on the pulling plate automatically fills the gap between the sliding frame and the backrest frame along with overturning, and the supporting performance of the sofa after conversion is guaranteed. The driving electric push rod can push the leg supporting plate to turn over, and the thigh root is prevented from being pressed; when not used, the leg supporting plate can be stored below the extending plate, occupied space is reduced, and the space utilization rate of a house is increased.

Description

Technical Field

[0001] This invention relates to the field of sofa manufacturing technology, specifically to a sofa frame structure, a sofa, and a manufacturing method. Background Technology

[0002] Sofas, as indispensable furniture in daily life, are widely used in homes, offices, leisure and entertainment venues, and other places. Their core load-bearing component is the iron frame structure, the design of which directly determines the sofa's functionality, spatial adaptability, and convenience. With the improvement of people's living standards and the diversification of living environments, higher demands are being placed on the multifunctionality, space utilization, and ease of relocation of sofas.

[0003] Most existing sofa frames are fixed, one-piece designs with limited functionality. They cannot be extended to transform into a sofa bed, failing to meet the multi-functional needs of small apartments and rental units, and increasing space occupancy and user costs. Some sofa frames lack leg support components. When the legs are not adequately supported, the thighs are compressed by body weight, which can hinder blood circulation in the lower limbs and lead to numbness. The lack of leg support also causes the body to naturally lean forward, and to maintain balance, the lower back will unconsciously arch backward, potentially leading to lumbar muscle strain and herniated discs in the long term. Most existing sofa frames are fixedly connected to the base using welding or bolts, lacking convenient disassembly. This not only makes moving the frame difficult and costly but also easily causes frame deformation and material damage. Furthermore, partial damage requires replacement of the entire frame, resulting in resource waste and economic losses. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a sofa frame structure, a sofa, and a manufacturing method, solving the problems of existing sofa frames being unable to extend or retract, lacking leg support components, and having difficulty in easily disassembling the main body and base.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sofa frame structure and a sofa, comprising a frame, a connecting plate and a base, wherein the frame is provided with an adjustment component and the connecting plate is provided with a convenient component; The convenient component includes multiple sleeves uniformly and fixedly connected to the lower surface of a connecting plate. A connecting post is inserted into each sleeve. A guide groove is formed on the outer wall of each sleeve. A limit block is slidably connected in the guide groove. A push ring is slidably connected to the outer wall of each sleeve and is fixedly connected to the limit block. Multiple lifting grooves are uniformly formed on the outer wall of each sleeve. Ball bearings are slidably connected in the lifting grooves. A slot is formed on the connecting post, and the ball bearings engage with the slot. The adjustment assembly includes two slide rails symmetrically mounted on the upper surface of a frame, a sliding frame slidably connected between the two slide rails, a third crossbar fixedly connected inside the frame, an adjustment column fixedly connected to the upper surface of the third crossbar, a sliding groove provided on the adjustment column, a toothed plate slidably connected inside the sliding groove, and uprights and extension plates fixedly connected to both sides of the sliding frame, with the toothed plate and the extension plate fixedly connected.

[0006] Preferably, a limiting ring is fixedly connected to the outer wall of the sleeve, and a compression spring is sleeved on the outer wall of the sleeve, with the two ends of the compression spring abutting against the limiting ring and the push ring, respectively.

[0007] Preferably, the lower surface of the protruding plate is symmetrically fixedly connected to two side plates, and the end of the side plate near the toothed plate is rotatably connected to an arc-shaped push plate and an auxiliary plate, and the end of the auxiliary plate away from the side plate is rotatably connected to a linkage plate.

[0008] Preferably, the arc-shaped push plate is rotatably connected to a conveyor plate at one end near the auxiliary plate, and the conveyor plate is rotatably connected to the middle of the auxiliary plate; the linkage plate is rotatably connected to a leg support plate at one end away from the auxiliary plate.

[0009] Preferably, a hinge seat is fixedly connected to one end of the adjusting column near the leg support plate, an electric push rod is rotatably connected inside the hinge seat, a connecting rod is fixedly connected between the two arc-shaped push plates, and the output end of the electric push rod is rotatably connected to the connecting rod.

[0010] Preferably, a first crossbar and a second crossbar are fixedly connected within the frame. Two abutment plates are symmetrically rotatably connected to the upper surface of the second crossbar, and the abutment plates abut against the first crossbar. A pull plate is rotatably connected to the end of the abutment plate away from the second crossbar.

[0011] Preferably, a hinge plate is rotatably connected inside the upright frame, and the end of the hinge plate away from the upright frame is rotatably connected to a pull plate. Two handrails are symmetrically installed on the upper surface of the frame.

[0012] Preferably, the base has an adjustment groove, and a rotating disk is rotatably connected in the adjustment groove, with the upper surface of the rotating disk fixedly connected to the connecting column.

[0013] Preferably, a backrest frame is fixedly connected to the upper surface of the frame, and a headrest frame is fixedly connected to the end of the backrest frame near the armrest.

[0014] A sofa frame structure and a sofa manufacturing method, comprising the following steps: S1. Assemble the sofa iron parts produced according to the specified dimensions, install the armrests, backrest frame and headrest frame in sequence, and assemble the leg support plate connecting assembly with the extension plate to obtain a complete sofa iron frame. Cover the sofa iron frame with soft padding on the frame, armrests, backrest frame, headrest frame, leg support plate, extension plate and pull plate fixedly connected flip plate to perform preliminary soft padding on the sofa iron frame; S2. Process the sofa fabric to a set size, and install the fabric of the set size onto the above-mentioned upholstery. Fix the sofa fabric with connectors to complete the installation and fixing of the sofa upholstery and fabric. S3. Pull the push ring to move it along the guide groove, release the push ring's restriction on the ball bearings, insert the connecting post into the sleeve, and when the connecting post abuts against the preset limiting block in the sleeve, the connecting post stops moving. At this time, the slot of the connecting post moves to the lifting groove. Release the push ring, and the spring's rebound force pushes the push ring to move along the guide groove, automatically squeezing the ball bearings so that the ball bearings engage with the slot, completing the quick installation of the sofa frame and base.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention solves the problem of inconvenient disassembly of existing sofa frame bodies and bases through a convenient component design. Pulling the push ring in the guide groove compresses the spring, releasing the constraint on the ball bearings; inserting the connecting post into the sleeve until it abuts against the limiting block moves the slot below the lifting groove; releasing the push ring causes the spring to return, pushing the ball bearings into the slot for engagement, completing the installation; if disassembly is required, pulling the push ring away from the lifting groove releases the constraint on the ball bearings, allowing direct removal of the connecting post for disassembly. Existing sofa frame and base connections are mostly secured with bolts and nuts or welded. Bolted connections require tools, making disassembly and assembly cumbersome, while welded connections are non-removable, failing to meet the needs of base repair and replacement. This solution not only eliminates the need for tools during disassembly but also allows for repeated disassembly and assembly without structural damage to core components such as the connecting post and sleeve; the push ring's movement path is strictly limited by the guide groove, and the ball bearings' movement is constrained by the lifting groove, ensuring stable component movement during disassembly and assembly, making the disassembly of the sofa frame body and base much more convenient.

[0016] 2. This invention solves the problems of existing sofa frames lacking extension and retraction capabilities and leg support components through its adjustable components. The moving toothed plate drives the sliding frame along the slide rail. When the extension plate is fully extended, the pull plate is pulled from a position perpendicular to the frame to a position horizontal to the frame, and the abutment plate is pulled from a position horizontal to a position perpendicular to the frame. The abutment plate supports the pull plate. The sofa cushions pre-installed on the upper surface of the two pull plates automatically fill the gap between the sliding frame and the backrest frame as the pull plate flips, ensuring good support for the sofa even after conversion. A drive rod can rotate the leg support plate, increasing the effective length of the sofa. The free switching of the sofa's form enhances its versatility for various scenarios. The leg support plate avoids pressure on the upper thighs, providing effective support for the user's legs, reducing the burden on the body during prolonged sitting, and improving sofa comfort. When the sofa is not in use, the leg support plate can be stored under the main extension plate, reducing the sofa's footprint and improving space utilization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a sofa frame structure, a sofa, and a manufacturing method according to the present invention. Figure 2 This is a schematic diagram of the frame structure of a sofa frame structure, a sofa, and a production method according to the present invention. Figure 3 This is a schematic diagram of the sliding frame structure of a sofa frame structure, sofa, and production method according to the present invention. Figure 4 This is a cross-sectional view of the adjustment column of a sofa frame structure, sofa, and production method according to the present invention. Figure 5 This is a schematic diagram of the connecting plate structure of a sofa frame structure, a sofa, and a production method according to the present invention. Figure 6 This is a cross-sectional view of the sleeve structure of a sofa frame structure, sofa, and manufacturing method according to the present invention. Figure 7 This is a cross-sectional view of the base of a sofa frame structure, sofa, and manufacturing method according to the present invention.

[0018] In the diagram: 1. Frame; 2. Connecting plate; 3. Base; 4. Backrest frame; 5. Headrest frame; 6. Rotating disc; 7. Leg support plate; 8. Extending plate; 9. Armrest; 10. Sliding frame; 11. Slide rail; 12. Upright frame; 13. Pull plate; 14. First crossbar; 15. Hinge plate; 16. Adjustment groove; 17. Abutment plate; 18. Second crossbar; 19. Third crossbar; 20. Toothed plate; 1. Adjusting column; 22. Hinge seat; 23. Electric actuator; 24. Connecting rod; 25. Side plate; 26. Arc-shaped push plate; 27. Auxiliary plate; 28. Conveying plate; 29. ​​Linkage plate; 30. Sleeve; 31. Connecting column; 32. Slot; 33. Push ring; 34. Limiting ring; 35. Limiting block; 36. Compression spring; 37. Guide groove; 38. Lifting groove; 39. Ball bearing; 40. Sliding groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] refer to Figures 1-7 The image shows a sofa frame structure and sofa, including a frame 1, a connecting plate 2, and a base 3. The frame 1 is equipped with an adjustment component, and the connecting plate 2 is equipped with a convenient component. The convenient component includes multiple sleeves 30 evenly and fixedly connected to the lower surface of the connecting plate 2. A connecting post 31 is inserted into each sleeve 30. A guide groove 37 is formed on the outer wall of each sleeve 30, and a limit block 35 is slidably connected within the guide groove 37. A push ring 33 is slidably connected to the outer wall of each sleeve 30, and the push ring 33 is fixedly connected to the limit block 35. Multiple lifting grooves 38 are evenly formed on the outer wall of each sleeve 30, and a rolling component is slidably connected within each lifting groove 38. The ball bearing 39 and the connecting column 31 are provided with a slot 32, and the ball bearing 39 is engaged with the slot 32; the outer wall of the sleeve 30 is fixedly connected to a limiting ring 34, and the outer wall of the sleeve 30 is fitted with a compression spring 36, the two ends of the compression spring 36 abut against the limiting ring 34 and the push ring 33 respectively; two armrests 9 are symmetrically installed on the upper surface of the frame 1; an adjustment groove 16 is provided in the base 3, and a rotating disk 6 is rotatably connected in the adjustment groove 16, and the upper surface of the rotating disk 6 is fixedly connected to the connecting column 31; a backrest frame 4 is fixedly connected to the upper surface of the frame 1, and a headrest frame 5 is fixedly connected to the end of the backrest frame 4 near the armrest 9.

[0021] To improve the ease of disassembling the sofa frame and base 3, this invention includes a convenient component. During disassembly, the push ring 33 is pulled along the guide groove 37 to move it away from the lifting groove 38, releasing the restriction on the ball bearing 39. This allows the connecting post 31 to be pulled out of the sleeve 30, completing the disassembly of the sofa base 3. During installation, the push ring 33 is pulled along the guide groove 37 to insert the connecting post 31 into the sleeve 30. When the connecting post 31 abuts against the preset limiting block inside the sleeve 30, the connecting post 31 stops moving. At this time, the slot 32 of the connecting post 31 moves to the lifting groove 38. The push ring 33 is released, and the rebound force of the compression spring 36 pushes the push ring 33 to move along the guide groove 37, automatically squeezing the ball bearing 39 so that it engages with the slot 32, completing the quick installation of the sofa frame and base 3.

[0022] Specifically, first, after assembling the sofa frame, install the sofa base 3. Pull the push ring 33 along the guide groove 37. The compression spring 36 is compressed by the push ring 33, causing the push ring 33 to move away from the lifting groove 38, releasing the push ring 33 from limiting the ball bearing 39. Insert the connecting post 31 into the sleeve 30. When the connecting post 31 abuts against the preset limiting block inside the sleeve 30, the abutting block is annular and fixedly connected to the inner wall of the sleeve 30, used to advance the connecting post 31. When the connecting post 31 abuts against the limiting block, the connecting post 31 stops moving. At this time, the slot 32 opened on the connecting post 31 moves to the bottom of the lifting groove 38. The push ring 33 is released. Under the rebound force of the compression spring 36, the push ring 33 and the limiting block 35 move in the opposite direction along the guide groove 37. The limiting block 35 abuts against the end of the guide groove 37 away from the limiting ring 34. The push ring 33 squeezes the ball 39, so that the ball 39 engages with the slot 32, completing the quick installation of the sofa frame and the base 3.

[0023] Secondly, when disassembling the sofa base 3, pull the push ring 33 along the guide groove 37 to move the push ring 33 away from the lifting groove 38, release the limit on the ball bearing 39, and the connecting column 31 can be pulled out from the sleeve 30 to complete the disassembly of the sofa base 3. After the sofa and base 3 are installed, adjust the drive system in the adjustment groove 16. The drive system includes a drive motor fixedly connected in the adjustment groove 16, a worm gear fixedly connected to the output end of the drive motor, and a worm wheel fixedly connected to the outer wall of the rotating shaft of the rotating disk 6 in the adjustment groove 16. The teeth of the worm gear mesh with the worm wheel. The rotation of the drive motor drives the rotating disk 6 to rotate, thereby realizing the adjustment of the sofa angle and avoiding the need to manually move the sofa when adjusting the angle of the traditional sofa.

[0024] refer to Figures 1-7The adjustment assembly includes two slide rails 11 symmetrically mounted on the upper surface of the frame 1, with a sliding frame 10 slidably connected between the two slide rails 11. A third crossbar 19 is fixedly connected inside the frame 1, and an adjustment column 21 is fixedly connected to the upper surface of the third crossbar 19. A sliding groove 40 is provided on the adjustment column 21, and a toothed plate 20 is slidably connected within the sliding groove 40. A stand 12 and an extension plate 8 are fixedly connected to both sides of the sliding frame 10, and the toothed plate 20 is fixedly connected to the extension plate 8. Two side plates 25 are symmetrically fixedly connected to the lower surface of the extension plate 8. An arc-shaped push plate 26 and an auxiliary plate 27 are rotatably connected to the end of the side plate 25 near the toothed plate 20. A linkage plate 29 is rotatably connected to the end of the auxiliary plate 27 away from the side plate 25. A conveying plate 28 is rotatably connected to the end of the arc-shaped push plate 26 near the auxiliary plate 27. 28 is rotatably connected to the middle of the auxiliary plate 27. The end of the linkage plate 29 away from the auxiliary plate 27 is rotatably connected to the leg support plate 7. The end of the adjusting column 21 near the leg support plate 7 is fixedly connected to the hinge seat 22. The electric push rod 23 is rotatably connected inside the hinge seat 22. The connecting rod 24 is fixedly connected between the two arc-shaped push plates 26, and the output end of the electric push rod 23 is rotatably connected to the connecting rod 24. The first crossbar 14 and the second crossbar 18 are fixedly connected inside the frame 1. The upper surface of the second crossbar 18 is symmetrically rotatably connected to two abutment plates 17, and the abutment plates 17 abut against the first crossbar 14. The end of the abutment plate 17 away from the second crossbar 18 is rotatably connected to the pull plate 13. The hinge plate 15 is rotatably connected inside the upright 12. The end of the hinge plate 15 away from the upright 12 is rotatably connected to the pull plate 13.

[0025] To improve the comfort of the sofa, this invention includes an adjustment component. The toothed plate 20 moves, causing the sliding frame 10 to move along the slide rail 11. The sofa cushions pre-set on the upper surfaces of the two pull plates 13 automatically fill the gap between the sliding frame 10 and the backrest frame 4 as the sofa is flipped, ensuring good support after the sofa is converted. The drive rod 23 can push the leg support plate 7 to flip, which can increase the length of the sofa and improve its versatility. The leg support plate 7 can avoid pressure on the upper thighs, reduce the burden on the body when using the sofa, and improve the comfort of the sofa. When the sofa is not in use, the leg support plate 7 can be stored under the protruding plate 8, reducing the area occupied by the sofa and improving the utilization rate of room space.

[0026] Specifically, first, when the sofa iron frame extends and converts, the drive system matching the toothed plate 20 rotates. The drive system consists of a drive motor and a gear fixedly connected to the output end of the drive motor, and the teeth of the gear mesh with the teeth of the toothed plate 20, driving the toothed plate 20 to horizontally extend along the sliding groove 40. When the toothed plate 20 moves, the sliding frame 10 and the extending plate 8 move synchronously with the toothed plate 20, and the sliding frame 10 moves along the slide rail 11 to prevent the sliding frame 10 and the extending plate 8 from shifting during the movement. When the extending plate 8 fully extends, the pulling plate 13 is pulled from the state perpendicular to the frame 1 to the state horizontal to the frame 1, and the abutting plate 17 is pulled from the state horizontal to the frame 1 to the state perpendicular to the frame 1. The abutting plate 17 supports the pulling plate 13. The two ends of the two pulling plates 13 away from the frame 1 are fixedly connected to a support plate, and a sofa soft bag structure is covered on the support plate to fill the gap between the extending plate 8 and the backrest frame 4; control the toothed plate 20 to move in the reverse direction, so that the sliding frame 10 and the extending plate 8 move synchronously with the toothed plate 20. When the sliding frame 10 moves to the initial position, the toothed plate 20 stops moving. At this time, the abutting plate 17 is converted from the state perpendicular to the frame 1 to the state horizontal to the frame 1, and the abutting plate 17 abuts against the first cross bar 14. The pulling plate 13 and the support plate fixedly connected to the pulling plate 13 are converted from the horizontal state to the state perpendicular to the frame 1, and the pulling plate 13 and the support plate move below the headrest frame 5 to support the user's back.

[0027] Secondly, the electric push rod 23 extends to push the connecting rod 24, and the connecting rod 24 simultaneously pushes the arc-shaped push plates 26 fixedly connected to both ends to rotate. The arc-shaped push plates 26 push the auxiliary plate 27 and the conveying plate 28 to move. The middle part and the end far from the side plate 25 of the auxiliary plate 27 are both rotatably connected with linkage plates 29. Under the action of the linkage plates 29, the leg support plate 7 extends from below the extending plate 8 to support the user's legs. When the electric push rod 23 contracts to pull the connecting rod 24, the arc-shaped push plates 26 pull the auxiliary plate 27 and the conveying plate 28 to move in the reverse direction,带动联动板29使腿部支撑板7收纳至伸出板8的下方,减少沙发占用面积。

[0028] A sofa iron frame structure and a production method of a sofa include the following steps: S1. Assemble the sofa iron parts produced according to the specified dimensions. Install the armrest 9, the backrest frame 4, and the headrest frame 5 in sequence. Assemble the components of the leg support plate 7 with the extending plate 8 to obtain a complete sofa iron frame. Cover the soft bag on the frame 1, the armrest 9, the backrest frame 4, the headrest frame 5, the leg support plate 7, the extending plate 8, and the turning plate fixedly connected to the pulling plate 13 of the sofa iron frame to perform preliminary soft bag covering on the sofa iron frame; S2. Process the sofa fabric into the set dimensions, and install the fabric of the set dimensions on the above soft bag. Fix the sofa fabric through the connecting parts to complete the installation and fixation of the sofa soft bag and the fabric; S3. Pull the push ring 33 to move it along the guide groove 37, release the limit of the push ring 33 on the ball 39, insert the connecting post 31 into the sleeve 30. When the connecting post 31 abuts against the preset limiting block in the sleeve 30, the connecting post 31 stops moving. At this time, the slot 32 of the connecting post 31 moves to the lifting groove 38. Release the push ring 33, and the rebound force of the compression spring 36 pushes the push ring 33 to move along the guide groove 37, automatically squeezing the ball 39, so that the ball 39 engages with the slot 32, and completes the quick installation of the sofa frame and the base 3.

[0029] The working principle of this invention is as follows: When installing the sofa base 3, the push ring 33 is pulled along the guide groove 37. The compression spring 36 is compressed by the push ring 33, causing the push ring 33 to move away from the lifting groove 38, releasing the limit of the push ring 33 on the ball bearing 39. The connecting post 31 is then inserted into the sleeve 30. When the connecting post 31 abuts against the preset limiting block inside the sleeve 30, the connecting post 31 stops moving. At this time, the slot 32 on the connecting post 31 moves below the lifting groove 38. The push ring 33 is released, and under the rebound force of the compression spring 36, the push ring 33 and the limiting block 35 move in the opposite direction along the guide groove 37. When the sofa frame is moved, the limiting block 35 abuts against the end of the guide groove 37 away from the limiting ring 34, and the push ring 33 squeezes the ball 39, causing the ball 39 to engage with the slot 32, thus completing the quick installation of the sofa frame and base 3. When disassembling the sofa base 3, the push ring 33 is pulled along the guide groove 37, moving the push ring 33 away from the lifting groove 38, releasing the limiting of the ball 39, and the connecting column 31 can be pulled out from the sleeve 30, completing the disassembly of the sofa base 3. The drive system in the adjusting groove 16 drives the rotating disk 6 to rotate, realizing the adjustment of the sofa angle. When the sofa frame extends and changes position, it engages with the toothed plate 20. The drive system of the sleeve rotates, driving the toothed plate 20 to extend horizontally along the sliding groove 40. When the toothed plate 20 moves, the sliding frame 10 and the extension plate 8 move synchronously with the toothed plate 20. When the extension plate 8 is fully extended, the pull plate 13 is pulled from a state perpendicular to the frame 1 to a state horizontal to the frame 1, and the abutment plate 17 is pulled from a state horizontal to the frame 1 to a state perpendicular to the frame 1. The abutment plate 17 supports the pull plate 13. The two pull plates 13 are fixedly connected to a support plate at the ends away from the frame 1. The support plate is covered with a sofa upholstery structure to fill the gap between the extension plate 8 and the backrest frame 4. The electric actuator 23 extends to push the connecting rod 24, which in turn pushes the arc-shaped push plate 26, which is fixedly connected at both ends, to rotate. The arc-shaped push plate 26 pushes the auxiliary plate 27 and the conveying plate 28 to move. The middle part of the auxiliary plate 27 and the end away from the side plate 25 are rotatably connected to the linkage plate 29. Under the action of the linkage plate 29, the leg support plate 7 extends from under the extension plate 8 to support the user's legs. When the electric actuator 23 retracts to pull the connecting rod 24, the arc-shaped push plate 26 pulls the auxiliary plate 27 and the conveying plate 28 to move in the opposite direction, which drives the linkage plate 29 to retract the leg support plate 7 to the underside of the extension plate 8.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sofa frame structure and a sofa, comprising a frame (1), a connecting plate (2), and a base (3), characterized in that: An adjustment component is provided on the frame (1), and a convenient component is provided on the connecting plate (2); The convenient component includes multiple sleeves (30) uniformly and fixedly connected to the lower surface of the connecting plate (2). A connecting post (31) is inserted into the sleeve (30). A guide groove (37) is opened on the outer wall of the sleeve (30). A limit block (35) is slidably connected in the guide groove (37). A push ring (33) is slidably connected on the outer wall of the sleeve (30), and the push ring (33) is fixedly connected to the limit block (35). Multiple lifting grooves (38) are uniformly opened on the outer wall of the sleeve (30). A ball bearing (39) is slidably connected in the lifting groove (38). A slot (32) is opened on the connecting post (31), and the ball bearing (39) is engaged with the slot (32). The adjustment assembly includes two slide rails (11) symmetrically mounted on the upper surface of the frame (1), a sliding frame (10) slidably connected between the two slide rails (11), a third crossbar (19) fixedly connected inside the frame (1), an adjustment column (21) fixedly connected to the upper surface of the third crossbar (19), a sliding groove (40) opened on the adjustment column (21), a toothed plate (20) slidably connected inside the sliding groove (40), a stand (12) and an extension plate (8) fixedly connected to both sides of the sliding frame (10), and the toothed plate (20) and the extension plate (8) fixedly connected.

2. The sofa frame structure and sofa according to claim 1, characterized in that: The outer wall of the sleeve (30) is fixedly connected to a limiting ring (34), and a compression spring (36) is sleeved on the outer wall of the sleeve (30). The two ends of the compression spring (36) abut against the limiting ring (34) and the push ring (33) respectively.

3. The sofa frame structure and sofa according to claim 1, characterized in that: Two side plates (25) are symmetrically fixedly connected to the lower surface of the protruding plate (8). An arc-shaped push plate (26) and an auxiliary plate (27) are rotatably connected to the end of the side plate (25) near the toothed plate (20). A linkage plate (29) is rotatably connected to the end of the auxiliary plate (27) away from the side plate (25).

4. The sofa frame structure and sofa according to claim 3, characterized in that: The arc-shaped push plate (26) is rotatably connected to a conveyor plate (28) at one end near the auxiliary plate (27), and the conveyor plate (28) is rotatably connected to the middle of the auxiliary plate (27). The linkage plate (29) is rotatably connected to a leg support plate (7) at one end away from the auxiliary plate (27).

5. A sofa frame structure and sofa according to claim 3, characterized in that: The adjusting column (21) is fixedly connected to a hinge seat (22) at one end near the leg support plate (7). An electric push rod (23) is rotatably connected inside the hinge seat (22). A connecting rod (24) is fixedly connected between the two arc-shaped push plates (26), and the output end of the electric push rod (23) is rotatably connected to the connecting rod (24).

6. The sofa frame structure and sofa according to claim 1, characterized in that: The frame (1) is fixedly connected to a first crossbar (14) and a second crossbar (18). The upper surface of the second crossbar (18) is symmetrically connected to two abutment plates (17), and the abutment plates (17) abut against the first crossbar (14). The end of the abutment plate (17) away from the second crossbar (18) is rotatably connected to a pull plate (13).

7. A sofa frame structure and sofa according to claim 6, characterized in that: A hinge plate (15) is rotatably connected inside the upright (12). The end of the hinge plate (15) away from the upright (12) is rotatably connected to the pull plate (13). Two handrails (9) are symmetrically installed on the upper surface of the frame (1).

8. A sofa frame structure and sofa according to claim 1, characterized in that: An adjustment groove (16) is provided in the base (3), and a rotating disk (6) is rotatably connected in the adjustment groove (16), and the upper surface of the rotating disk (6) is fixedly connected to the connecting column (31).

9. A sofa frame structure and sofa according to claim 7, characterized in that: A backrest frame (4) is fixedly connected to the upper surface of the frame (1), and a headrest frame (5) is fixedly connected to one end of the backrest frame (4) near the armrest (9).

10. A sofa frame structure and a method for producing a sofa, characterized in that, Includes the following steps: S1. Assemble the sofa iron parts produced according to the specified size, install the armrest (9), backrest frame (4) and headrest frame (5) in sequence, and assemble the leg support plate (7) connecting assembly with the extension plate (8) to obtain a complete sofa iron frame. Cover the sofa iron frame with soft padding on the flip plate that is fixedly connected to the frame (1), armrest (9), backrest frame (4), headrest frame (5), leg support plate (7), extension plate (8) and pull plate (13) to perform preliminary soft padding on the sofa iron frame; S2. Process the sofa fabric to a set size, and install the fabric of the set size onto the above-mentioned upholstery. Fix the sofa fabric with connectors to complete the installation and fixing of the sofa upholstery and fabric. S3. Pull the push ring (33) to move it along the guide groove (37), release the limit of the push ring (33) on the ball (39), insert the connecting post (31) into the sleeve (30), when the connecting post (31) abuts against the preset limiting block in the sleeve (30), the connecting post (31) stops moving, at this time the slot (32) of the connecting post (31) moves to the lifting groove (38), release the push ring (33), the rebound force of the compression spring (36) pushes the push ring (33) to move along the guide groove (37), automatically squeeze the ball (39), so that the ball (39) is engaged with the slot (32), and complete the quick installation of the sofa frame and the base (3).

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