WO2024040791A1 - Compact sofa iron frame structure - Google Patents

Abstract

A compact sofa iron frame structure, relating to the technical field of sofas. The compact sofa iron frame structure comprises a main frame (1) and a sliding frame (11), and an adjustment assembly (2) is provided on the main frame (1). The adjustment assembly (2) comprises: a driving rod (21) and a driven rod (22), the driving rod (21) and the driven rod (22) being both rotatably arranged on the main frame (1), and both having the other ends rotatably connected to a backrest; and a linkage rod (23), the linkage rod (23) being rotatably provided on the driving rod (21). A drive assembly (9) for driving a leg support (17) rotatably provided on the sliding frame (11) to rotate is provided on the main frame (1), and a fixing rod (19) for limiting the position of the leg support (17) is provided on the sliding frame (11). The drive assembly (9) is started to drive the leg support (17) to rotate to the outside of the sofa to support the legs; when the positions of a seat cushion and the backrest need to be adjusted, the drive assembly (9) is started again to drive the backrest and the driven rod (22) to rotate and move along with the seat cushion; thus, the back rubbing feeling caused by the backrest to the back is reduced, and even zero back rubbing feeling is achieved, thereby improving the comfort level of people when using the sofa.

Description

A compact sofa iron frame structure Technical field

The present application relates to the technical field of sofas, and in particular to a compact sofa iron frame structure.

Background technique

Sofa literally means a backrest chair with springs or thick foam cushions. It is a common piece of furniture in the furniture and office fields and is very common in life.

A traditional sofa includes a frame, a backrest, a seat cushion and a leg rest. The connection mechanism between the backrest and the seat cushion is a rotating pair or a rotary pair. When adjusting the angle of the backrest, the rotation point of the connecting mechanism is far away from the rotation point of the human body. Far away, so as the angle of the backrest and seat cushion changes, the human body's back and backrest will move relative to each other, resulting in a strong "back rubbing feeling". At the same time, the leg rest is movably connected to the frame and to the seat cushion, so the leg rest Activities rely on the movement of the seat cushion, resulting in the inability to adjust the leg rests individually, thereby reducing people's comfort when using the sofa.

Contents of the invention

In order to improve people's comfort when using the sofa, this application provides a compact sofa iron frame structure.

This application provides a compact sofa iron frame structure that adopts the following technical solution:

A compact sofa iron frame structure, including a frame, a sliding frame slidably arranged on the frame and connected to a seat cushion. The frame is provided with an adjustment component for adjusting the angle of the backrest, and the adjustment component includes:

An active rod and a driven rod, both of which are rotatably mounted on the frame and the other ends are rotatably connected to the backrest;

A linkage rod, which is rotatably arranged on the active rod and is rotatably connected to the sliding frame;

The frame is provided with a driving assembly that drives and rotates the leg rest provided on the sliding frame. The sliding frame is provided with a fixing device that limits the position of the leg rest when it is rotated to the outside and is used to prevent the leg rest from continuing to rotate. Rod.

By adopting the above technical solution, when the leg rest needs to be used alone, the driving assembly is activated to drive the leg rest to the outside of the sofa to support the legs, and the leg rest resists the fixed rod to limit the position, so that the leg rest cannot continue to rotate, and When the leg rest needs to be retracted, the driving component starts to drive the leg rest to rotate and retract the leg rest, so the leg rest can be used alone; when it is necessary to adjust the position of the seat cushion and backrest, the driving component drives the leg rest to rotate out for use and then continues to drive the leg rest to move. , the leg rest pushes the sliding frame and the leg rest to move simultaneously under the action of the fixed rod. The movement of the sliding frame drives the active lever to rotate through the linkage lever. The active lever drives the backrest and the driven lever to rotate and move together with the seat cushion, thereby lowering the back There is even no back rubbing against the backrest, thereby improving people's comfort when using the sofa.

When the backrest needs to be rotated back to its original position, the driving assembly starts to drive the leg rest to rotate for recovery, and then the driving assembly continues to drive the leg rest to pull the sliding frame back to the original position. Therefore, a single driving assembly can drive the leg rest alone. Rotate or simultaneously drive the leg rest and backrest to rotate together, thereby making the sofa structure more compact, and also saving energy and consumables consumption of multiple driving components, achieving energy conservation and environmental protection and reducing sofa production costs.

Optionally, the frame is provided with a limiting component that limits the position of the leg rest when it is rotated to the inside of the sofa. The limiting component includes:

a limit electric push rod, which is arranged on the sliding frame;

Limiting block, the limiting block is slidably provided on the sliding frame and connected with the limiting electric push rod piston rod; when the leg rest is transferred to the sofa and placed, the limiting block presses against the leg rest. The upper part is used to block the rotation of the leg rest, so that the driving assembly can independently drive the sliding frame to move.

By adopting the above technical solution, when the leg rest needs to be rotated separately, the electric limit push rod starts to drive the limit block away from the leg rest, so the leg rest can automatically rotate and then contact the fixed rod. When the seat cushion needs to be moved separately, the leg rest rotates to the inside of the sofa for storage, and the limit electric push rod is activated to drive the limit block close to the leg rest, causing the limit block to contact the leg rest for positioning. Therefore, when the driving component is activated, it can push the leg rest and the sliding frame to move at the same time. This allows the seat cushion to be moved independently without turning out the leg rest, thereby further improving people's comfort when using the sofa.

Moreover, the limit block resists and is positioned on the leg rest, thereby reducing the pulling force of the leg rest on the limit electric push rod, thus increasing the life of the limit electric push rod, and also reducing the probability of the leg rest falling downwards. Improves people's comfort when using the sofa.

Optionally, the driving components include:

A first electric push rod, which is rotatably installed on the frame and is rotationally connected with the sliding frame;

The second electric push rod is rotatably arranged on the sliding frame and is rotationally connected with the leg rest.

By adopting the above technical solution, the first electric push rod and the second electric push rod independently push the movement of the seat frame or the leg rest, so it can be adjusted according to people's needs, which improves people's comfort when using the sofa.

Optionally, the frame is provided with a support mechanism to support the leg rest. When the leg rest is in use, the leg rest is flush with the upper surface of the seat cushion, and the leg rest is in an upright state when retracted. The support mechanism includes:

A support plate, the support plate is arranged on the leg rest;

The first rotating plate and the second rotating plate are both rotatably arranged on the sliding frame;

a third rotating plate, the third rotating plate is rotatably arranged on the second rotating plate and is rotatably connected with the first rotating plate and the support plate;

a fourth rotating plate, which is rotatably disposed on an end of the first rotating plate away from the sliding frame and is rotatably connected to the support plate;

A support rod is provided on the first rotating plate, and the driving assembly is connected to the support rod.

By adopting the above technical solution, the driving assembly starts to drive the support rod and the first rotating plate to rotate, and the first rotating plate rotates to drive the second rotating plate, the third rotating plate, the fourth rotating plate and the supporting plate to rotate simultaneously, so that the supporting plate and the leg The holder is used from the inside of the sofa to the outside of the sofa, so that the leg rest is turned from a vertical state to a state flush with the upper surface of the seat cushion, thereby supporting the person's legs. At the same time, the leg rest is in a vertical state when retracted, so The leg rests can also protect the internal structure of the sofa.

Optionally, the support board is provided with an expansion board through a connecting assembly. When the leg rest is turned to the outside of the sofa for use, the expansion board can be turned to the side of the leg rest away from the sofa and cooperates with the leg rest to support the legs. For support, when the leg rest is retracted, the expansion board is turned to the side of the leg rest close to the inside of the sofa. The connection component includes:

a first connecting plate, which is rotatably mounted on the support plate;

A second connecting plate. Both ends of the second connecting plate are rotationally connected to the first connecting plate and the fourth rotating plate respectively.

By adopting the above technical solution, the rotation of the fourth rotating plate drives the support plate to rotate, and the rotation of the support plate and the fourth rotating plate drives the first connecting plate and the second connecting plate to rotate, thereby driving the expansion plate to rotate, so that the expansion plate rotates to The outside of the sofa cooperates with the leg rest to support the legs, and the space under the sofa is limited, so the size of the leg rest is also limited. The expansion board cooperates with the leg rest to support the legs, thus increasing the space for supporting the legs. area, thereby improving the support effect for the legs, thus further improving people's comfort when using the sofa; and the expansion board moves together with the leg rest, thereby improving the consistency of the movement of the expansion board and the leg rest, further improving people's comfort when using the sofa. Improves the comfort when using the sofa.

Optionally, the sliding frame is provided with a telescopic component that drives the seat cushion to extend, and the telescopic component includes;

A telescopic board, which is slidably arranged on the sliding frame and connected to the seat cushion;

Telescopic motor, the telescopic motor is arranged on the sliding frame;

The telescopic screw rod is rotatably arranged on the sliding frame and is connected to the output shaft of the telescopic motor and is threadedly connected to the telescopic plate.

By adopting the above technical solution, the telescopic motor starts to drive the telescopic screw rod to rotate, the telescopic screw rod rotates to drive the telescopic plate to move, and the telescopic plate moves to drive the seat cushion to move, so as to realize the partial extension or retraction of the seat cushion to the original position. Therefore, the seat cushion can be used The elasticity adjusts the size of the seat cushion, so when partial support for a person's legs is required, the legs can be supported without adjusting the position of the leg rest, thus further improving people's comfort when using the sofa.

Optionally, the active rod is rotatably provided with a fixed connecting plate that is rotatably connected to the driven rod and used to be fixedly connected to the backrest.

By adopting the above technical solution, the fixed connecting plate connects the active rod and the driven rod together for rotation, thus improving the stability when the active rod and the driven rod drive the backrest to rotate, improving people's comfort when using the sofa, and The point connection between the active and driven rods and the backrest is converted into surface contact, thus increasing the life of the backrest.

Optionally, the driving rod is rotationally connected to the frame through a rotating assembly, and the rotating assembly includes:

Step bolts, which pass through the frame and are threadedly connected to the driving rod;

Rotating bushing, the rotating bushing is snap-fitted on the frame through the snap-in groove and is rotationally connected to the frame; the step bolt passes through the rotating bushing and is threadedly connected to the driving rod so that the step bolt and the driving rod are in contact with each other. Tight on the rotating bushing.

By adopting the above technical solution, the rotating bushing is snap-fitted to the frame, and the rotating bushing can rotate on the frame, and then the step bolt is threaded through the rotating bushing and connected to the active rod, thereby realizing the The active lever is rotated and installed on the frame, and can be disassembled by reverse operation, thereby improving the convenience and stability when the active lever is rotated and installed on the rack.

Optionally, the sliding frame is provided with a seat spring mechanism to support the seat cushion.

By adopting the above technical solution, the seat cushion is supported by the seat spring mechanism, thereby improving the stability of the seat cushion and human comfort, and improving people's comfort when using the sofa.

Optionally, the seat spring mechanism includes:

A plurality of seat spring assemblies, one end of the plurality of seat spring assemblies is provided with a plurality of hooks hung on the sliding frame, and the other end is detachably connected to the sliding frame through a fixed component;

A connecting horizontal plate is provided on multiple seat spring assemblies and is used to connect multiple seat spring assemblies together.

By adopting the above technical solution, the connecting horizontal plate connects multiple seat spring assemblies together, and then one end is fixedly connected to the sliding frame through a fixed component, and then the hook is hung on the sliding frame, thereby realizing the seat spring assembly. The spring assembly is installed on the sliding frame, and multiple connecting horizontal plates fixedly connect multiple seat spring assemblies together, thereby improving the convenience of installation, and also making the distance between two adjacent seat spring assemblies The distance is balanced, thereby improving the support effect of the seat spring assembly on the seat spring and improving people's comfort when using the sofa.

Optionally, the fixing components include:

A fixed plate, the fixed plate is arranged on the sliding frame, and the seat spring assembly is placed on the fixed plate;

Elastic pressure plate, the elastic pressure plate is arranged on the fixed plate and presses against the seat spring assembly for positioning.

By adopting the above technical solution, the seat spring assembly is placed on the fixed plate, so that the seat spring assembly collides with the elastic pressure plate, the pull hook is hung on the sliding frame, and the seat spring assembly snaps into the elastic pressure plate and the fixed plate between them, so the elastic pressure plate presses against the seat spring assembly for positioning, thereby realizing the fixing and replacement of the seat spring assembly.

Optionally, the hook and the end of the seat spring assembly away from the hook are respectively provided with a first positioning sleeve and a second positioning sleeve made of plastic material. The first positioning sleeve and the second positioning sleeve are respectively connected with the hook. The sliding frame and the fixed plate are in conflict, and the plurality of first positioning sleeves are fixedly connected together through the fixed horizontal plate.

By adopting the above technical solution, the first positioning sleeve and the second positioning sleeve conflict with the sliding frame and the fixed plate respectively, thereby reducing the probability of noise after contact with hard materials. At the same time, the fixed horizontal plate fixes multiple first positioning sleeves. Connected together, thereby improving the stability of the seat spring assembly after installation, improving the stability of the seat cushion, thereby improving people's comfort when using the sofa.

Optionally, the seat spring mechanism includes a plurality of tension springs and tension hooks arranged on the plurality of tension springs, and the tension hooks are hung on the sliding frame for positioning.

By adopting the above technical solution, the hooks on multiple tension springs are hung on the sliding frame, thereby achieving multiple tension springs to support the seat cushion. Moreover, the production cost of the entire tension spring is low during production, so it can satisfy people's comfort. degree, and also saves costs.

To sum up, this application includes at least one of the following beneficial technical effects:

The driving component is started to drive the leg rest to the outside of the sofa to support the legs. When the position of the seat cushion and backrest needs to be adjusted, the driving component continues to be started to drive the leg rest to move. The leg rest pushes the sliding frame and the leg rest to move at the same time. The frame movement drives the active lever to rotate through the linkage lever, and the active lever drives the backrest and the driven lever to rotate and move together with the seat cushion, thereby reducing the back rubbing feeling between the back and the backrest, and even achieving zero back rubbing feeling, thereby improving Improve people's comfort when using the sofa.

Description of drawings

Figure 1 is a schematic structural diagram of implementation 1 of the present application;

Figure 2 is a schematic structural diagram of Embodiment 1 of the present application;

Figure 3 is a schematic cross-sectional view of the rotating assembly in the first embodiment of the present application;

Figure 4 is a schematic structural diagram of the seat spring mechanism in the first implementation of the present application;

Figure 5 is a partial exploded view of implementation 1 of the present application, mainly showing fixed components;

Figure 6 is a schematic structural diagram of a telescopic component in the first embodiment of the present application;

Figure 7 is a partial exploded view of implementation 1 of this application, mainly showing telescopic components;

Figure 8 is a schematic structural diagram of the leg rest, expansion plate, support mechanism and connecting components in the first implementation of the present application, with the leg rest in use;

Figure 9 is a schematic structural diagram of the support mechanism and connection components in the first embodiment of the present application;

Figure 10 is an enlarged view of A in Figure 2;

Figure 11 is a schematic structural diagram of the driving assembly in the second embodiment of the present application;

Figure 12 is a schematic structural diagram of a fixed connecting plate in the third embodiment of the present application.

Reference signs: 1. Frame; 11. Sliding frame; 12. Fixed connecting plate; 13. Main pipeline; 14. Auxiliary pipeline; 15. First positioning sleeve; 151. Fixed horizontal plate; 16. Second positioning sleeve ; 161. Positioning slot; 17. Leg rest; 18. Expansion plate; 19. Fixed rod; 2. Adjustment component; 21. Active rod; 22. Followed rod; 23. Linkage rod; 24. Connecting part; 3. Rotation Components; 31. Step bolt; 32. Rotating bushing; 33. Rotating groove; 34. Mounting hole; 4. Seat spring mechanism; 41. Seat spring assembly; 42. Connecting horizontal plate; 43. Installation part; 5. Fixed Component; 51. Fixed plate; 511. Vertical part; 512. First horizontal part; 513. Second horizontal part; 52. Elastic pressure plate; 53. Vertical section; 54. Pressure section; 6. Support mechanism; 61 , support plate; 62. first rotating plate; 621. fitting groove; 63. second rotating plate; 64. third rotating plate; 65. fourth rotating plate; 66. support rod; 7. connecting component; 71. The first connecting plate; 72. The second connecting plate; 81. The first rotating shaft; 82. The second rotating shaft; 83. The first supporting shaft; 84. The second supporting shaft; 85. The third supporting shaft; 86. The first installation 87. Second mounting seat; 88. Bearing plate; 9. Driving assembly; 91. Driving plate; 92. Driving electric push rod; 94. Limiting assembly; 95. Limiting block; 96. First electric push rod ; 97. Second electric push rod; 10. Telescopic assembly; 101. Telescopic plate; 102. Telescopic motor; 103. Telescopic screw rod.

Detailed ways

The present application will be further described in detail below with reference to Figures 1-11.

The embodiment of the present application discloses a compact sofa iron frame structure.

Implementation one

Referring to Figures 1 and 2, the compact sofa iron frame structure includes a frame 1, a sliding frame 11 slidably installed on the frame 1 and connected to the seat cushion. The frame 1 is provided with an adjustment component 2 for adjusting the angle of the backrest. A leg rest 17 is rotatably mounted on the end of the sliding frame 11 away from the backrest, and the frame 1 is also provided with a driving assembly 9 that drives the leg rest 17 to rotate.

Referring to Figures 1 and 2, the upper surface of the frame 1 is in an inclined state and the height of the end close to the backrest is lower than the height of the end away from the backrest. The sliding frame 11 is slidably installed on the frame 1 parallel to the upper surface of the frame 1. on, and the sliding direction of the sliding frame 11 is in the direction of approaching or away from the backrest; the adjusting component 2 includes an active rod 21, a driven rod 22 and a linkage rod 23, on the opposite side walls of the frame 1 and located on one side of the sliding frame 11 The first mounting base 86 and the second mounting base 87 are both fixedly installed, and the second mounting base 87 is located below the first mounting base 86; there are two adjustment components 2 and they are arranged in one-to-one correspondence with the two first mounting bases 86. .

Referring to Figures 1 and 2, the bottom end of the driven rod 22 and the first mounting seat 86, the bottom end of the driving rod 21 and the second mounting seat 87 are all rotationally connected together through the rotating assembly 3. The following is connected to the driven rod 22. Take rotating component 3 as an example for explanation.

Referring to Figures 2 and 3, the rotating assembly 3 includes a step bolt 31 and a rotating bushing 32. A mounting hole 34 is provided on the first mounting seat 86. The step bolt 31 passes through the mounting hole 34 and is threadedly connected to the driven rod 22. An annular rotating groove 33 is formed on the outer wall of the rotating bushing 32 by bending. At the same time, the rotating bushing 32 is elastic and has a relief hole penetrating the rotating bushing 32. Therefore, squeezing the rotating bushing 32 can push the rotating bushing 32 into place. The sleeve 32 is snap-fitted to the mounting hole 34, the side walls of the first mounting seat 86 resist against the opposite side walls of the rotating groove 33, and the rotating bushing 32 can rotate with the first mounting seat 86, and the step bolt 31 passes through horizontally The bushing 32 is rotated, and the head of the step bolt 31 and the driven rod 22 are pressed against the opposite sides of the rotating bushing 32 for positioning.

Referring to Figures 1 and 2, the top of the driven rod 22 and the top of the driving rod 21 both extend above the sliding frame 11, and the top of the driven rod 22 is located above the top of the driving rod 21, while the driving rod 21 is located between the driven rod 22 and the sliding frame 11. Between the moving frames 11, a fixed connecting plate 12 is rotatably connected to the driven rod 22 on the top of the driving rod 21. The end of the fixed connecting plate 12 away from the driving rod 21 and the driven rod 22 is tilted upward, and the backrest is fixed. Installed on two fixed connecting plates 12; one end of the linkage rod 23 is rotationally connected to the side wall of the active rod 21, and the other end of the linkage rod 23 passes under the sliding frame 11 and is rotationally connected to the side wall of the sliding frame 11; the active rod 21. The rotation direction axes of both ends of the driven rod 22 and the rotation direction axis of the linkage rod 23 are both parallel and perpendicular to the sliding direction of the sliding frame 11.

Referring to Figures 1 and 4, the sliding frame 11 is a frame structure and includes a main pipe 13 and an auxiliary pipe 14 that are connected together. The main pipe 13 is located on the side of the auxiliary pipe 14 close to the active rod 21; the sliding frame 11 is provided with a counter cushion The seat spring mechanism 4 for supporting, the seat spring mechanism 4 includes a plurality of seat spring assemblies 41 and a connecting horizontal plate 42. One end of the seat spring assembly 41 close to the active rod 21 is integrally provided with a hook, and the hook is hung to the main pipe 13 The seat spring assembly 41 extends along the sliding direction of the sliding frame 11 and is arched. At the same time, the end of the seat spring assembly 41 away from the hook is integrally provided with a mounting part 43, and the axis of the mounting part 43 and the active lever 21 The axis of rotation is parallel; the seat cushion is fixedly installed on multiple seat spring assemblies 41.

Referring to Figures 4 and 5, multiple connecting horizontal plates 42 are provided at intervals along the extension direction of the seat spring assembly 41, and each connecting horizontal plate 42 fixedly connects multiple seat spring assemblies 41 together; each mounting portion 43 are all detachably connected to the auxiliary pipe 14 through the fixing assembly 5. The fixing assembly 5 includes a fixing plate 51 and an elastic pressure plate 52. The fixing plate 51 includes a vertical part 511 connected together and a first horizontal part located at the upper and lower ends of the vertical part 511. The first horizontal part 512 and the second horizontal part 513 are located on both sides of the vertical part 511, and the first horizontal part 512 is located on the side of the vertical part 511 close to the main pipe 13 and on the second Below the horizontal part 513; the vertical part 511 is against the side wall of the auxiliary pipe 14 close to the main pipe 13, and the second horizontal part 513 is set up on the upper surface of the auxiliary pipe 14 and fixed by screws.

Referring to Figures 4 and 5, the elastic pressure plate 52 includes a vertical section 53 and a pressing section 54 that are connected together and have elasticity. The vertical section 53 is fixedly installed on the upper surface of the first horizontal portion 512, and the pressing section 54 It is located on the top of the vertical section 53, and the resisting section 54 is inclined upward and toward the side close to the vertical section 53; the mounting portion 43 can be placed on the upper surface of the first horizontal portion 512 and is located between the resisting section 54 and the vertical section. 511, and then pull the hook to hang it on the main pipe 13. The hook pulls the mounting part 43 to snap into the space between the pressing section 54 and the first horizontal part 512, and the mounting part 43 presses against the vertical section 53. The section 54 is pressed against the mounting portion 43 for positioning, thereby realizing the installation of the seat spring assembly 41 .

Referring to Figures 4 and 5, a first positioning sleeve 15 and a second positioning sleeve 16 are respectively fixedly installed on the hook and the mounting portion 43. The first positioning sleeve 15 and the second positioning sleeve 16 are both made of plastic material. The sleeve 15 can be hung on the main pipe 13 to achieve contact between the first positioning sleeve 15 and the main pipe 13. At the same time, multiple first positioning sleeves 15 are fixedly connected together through the fixed horizontal plate 151; the second positioning sleeve 16 is provided with an annular The positioning groove 161 is located, and both the vertical section 53 and the pressing section 54 can be snap-fitted to the positioning groove 161, so the second positioning sleeve 16 conflicts with the fixed plate 51 and the elastic pressure plate 52, thereby reducing the size of the seat spring assembly 41 and the probability of noise being generated between the main pipe 13 and the auxiliary pipe 14.

Referring to Figures 6 and 7, the auxiliary pipe 14 is provided with a telescopic assembly 10 for driving the seat cushion extension. The telescopic assembly 10 includes a telescopic plate 101, a telescopic motor 102 and a telescopic screw rod 103. A horizontally extending screw rod 103 is fixedly installed on the upper surface of the auxiliary pipe 14. The auxiliary pipe 14 is away from the load-bearing plate 88 on the side of the main pipe 13; the telescopic plate 101 is slidably installed on the load-bearing plate 88, and the sliding direction of the telescopic plate 101 is parallel to the sliding direction of the sliding frame 11. At the same time, the end of the seat cushion away from the backrest is fixed. Installed on the upper surface of the telescopic plate 101; the telescopic motor 102 is fixedly installed on the bearing plate 88, and the telescopic screw rod 103 is rotationally installed on the upper surface of the bearing plate 88. At the same time, the telescopic screw rod 103 is threadedly connected to the telescopic plate 101, and the telescopic screw The rod 103 is connected to the output shaft of the telescopic motor 102; the telescopic motor 102 starts the telescopic screw rod 103 to rotate, so the telescopic screw rod 103 rotates to drive the telescopic plate 101 and the seat cushion to move, thereby realizing the extension and retraction of the seat cushion.

Referring to Figures 1 and 8, the sliding frame 11 is provided with a support mechanism 6 for supporting the leg rest 17. When the leg rest 17 is turned to the side of the sliding frame 11 away from the backrest and located outside the sofa for use, the leg rest 17 The upper surface is flush with the upper surface of the seat cushion; and when the leg rest 17 is retracted into the sofa, the leg rest 17 is in a vertical state.

Referring to Figures 8 and 9, the following is an example of using the leg rest 17 when it is rotated to the outside of the sofa. Two support mechanisms 6 are provided at intervals along the sliding direction perpendicular to the sliding frame 11. The support mechanism 6 includes a support plate 61, The first rotating plate 62 and the second rotating plate 63, the third rotating plate 64, the fourth rotating plate 65 and the supporting rod 66. The supporting plate 61 is fixedly installed on the lower surface of the leg rest 17, and the supporting plate 61 is used to support the leg rest. 17 for support.

Referring to Figures 8 and 9, a first rotating shaft 81 and a second rotating shaft 82 parallel to each other are fixedly installed on the opposite side walls of the sliding frame 11, and the first rotating shaft 81 is located above the second rotating shaft 82. At the same time, the first rotating shaft 81 The second rotating shaft 82 is located on the side away from the backrest, and the first rotating shaft 81 is horizontal and perpendicular to the sliding direction of the sliding frame 11. One end of the first rotating plate 62 is rotatably mounted on the first rotating shaft 81, and the other end of the first rotating plate 62 is One end extends obliquely downward to the outside of the sofa; and the second rotating plate 63 is rotatably mounted on the second rotating shaft 82, and the second rotating plate 63 extends obliquely downward to the side close to the first rotating plate 62; one end of the third rotating plate 64 Rotation is installed on the bottom end of the second rotating plate 63, and the third rotating plate 64 passes through the first rotating plate 62 and contacts the first rotating plate 62. At the same time, the first rotating plate 62 and the third rotating plate 64 are in contact. Rotate and connect together.

Referring to Figures 8 and 9, mutually parallel first support shafts 83, second support shafts 84 and third support shafts 85 are fixedly mounted on the side walls of the two support plates 61 on opposite sides, and the third support shaft 85 is located at The first support shaft 83 is away from the side of the sliding frame 11, and the second support shaft 84 is located between the third support shaft 85 and the first support shaft 83 and below the third support shaft 85 and the first support shaft 83. The first The axis of the support shaft 83 is parallel to the axis of the first rotating shaft 81; the top end of the third rotating plate 64 is rotationally connected to the first supporting shaft 83, and one end of the fourth rotating plate 65 is rotatably installed on the bottom end of the first rotating plate 62, and the fourth rotating plate 64 is rotatably mounted on the bottom end of the first rotating plate 62. The top end of the plate 65 is rotationally connected to the second support shaft 84; the support rod 66 is fixedly installed on the side wall of the opposite side of the two first rotating plates 62, and the axes of the support rod 66 and the first rotating shaft 81 are parallel.

Referring to Figures 1 and 8, the support plate 61 is provided with an expansion plate 18 through the connecting assembly 7. When the leg rest 17 is turned to the outside of the sofa for use, the expansion plate 18 is located on the side of the leg rest 17 away from the backrest, and is on the expansion plate 18. The surface is flush with the upper surface of the leg rest 17. When the leg rest 17 is turned to the inside of the sofa for storage, the expansion board 18 is turned to the side of the leg rest 17 close to the backrest, and at the same time the expansion board 18 is in a horizontal state.

Referring to Figures 8 and 9, the connection assembly 7 includes a first connection plate 71 and a second connection plate 72. One end of the first connection plate 71 is rotatably mounted on the third support shaft 85, and the other end of the first connection plate 71 is inclined downward. It is set that one end of the second connecting plate 72 is rotatably installed on the top of the fourth rotating plate 65, and the second connecting plate 72 tilts upward through one side of the first connecting plate 71 and contacts the first connecting plate 71. At the same time, the first connecting plate 72 71 and the second connecting plate 72 are rotationally connected at the contact point, and the top of the second connecting plate 72 is firmly connected to the lower surface of the expansion plate 18; at the same time, the rotation direction axes of each component of the supporting mechanism 6 and the connecting component 7 are parallel.

Referring to Figures 8 and 9, when the leg rest 17 is rotated out of the sofa, the first connecting plate 71 and the second connecting plate 72 are simultaneously driven to rotate, so that the expansion plate 18 is rotated to the side of the leg rest 17 away from the backrest. Then the leg rest 17 and the expansion plate 18 cooperate to support the legs; at the same time, when the leg rest 17 is rotated into the sofa, the first connecting plate 71 and the second connecting plate 72 drive the expansion plate 18 to rotate to the inside of the sofa, and expand The plate 18 is located on the side of the leg rest 17 close to the backrest.

Referring to Figures 2 and 8, the driving assembly 9 includes a driving plate 91 and a driving electric push rod 92. The driving plate 91 is fixedly installed on the support rod 66, and the driving electric push rod 92 is rotatably installed on the frame 1 and located on the sliding frame. 11 is close to the backrest side, and the driving electric push rod 92 piston rod is rotationally connected with the driving plate 91.

Referring to Figures 2, 8 and 9, the electric push rod 92 is driven to start and drive the support rod 66 to move. The support rod 66 moves to drive the first rotating plate 62, the first rotating plate 62, the third rotating plate 64 and the fourth rotating plate 65. , the support plate 61 and the leg rest 17, the first connecting plate 71 and the second connecting plate 72, and the expansion plate 18 rotate at the same time, so that the leg rest 17 and the expansion plate 18 are turned to the outside of the sofa for use, and the electric push rod 92 is driven to retract. The leg rest 17 and the expansion plate 18 can be driven to rotate to the inside of the sofa for storage. At this time, the end of the second rotating plate 63 away from the second rotating shaft 82 is inclined downward toward the side close to the backrest.

Referring to Figures 8 and 9, a fixed rod 19 is fixedly installed on the side wall of the sliding frame 11 and on the side of the first rotating plate 62 away from the backrest. Therefore, when the leg rest 17 is rotated to the outside of the sofa for use, the first rotating plate 62 The side wall on the side facing away from the backrest can be pressed against the side wall of the fixed rod 19 for restriction, thereby blocking the leg rest 17 from continuing to rotate. At the same time, the first rotating plate 62 is provided with a hole that the fixed rod 19 can fit into. Fit the groove 621 to limit the continued rotation of the leg rest 17, and then drive the electric push rod 92 to continue moving the piston rod to drive the sliding frame 11 to move. The sliding frame 11 moves to drive the backrest to move and rotate at the same time, thereby adjusting the backrest. position, and when it is necessary to move back, the electric push rod 92 is started to drive the leg rest 17 and the expansion board 18 to the inside of the sofa, and the electric push rod 92 piston rod continues to retract to drive the sliding frame 11 to move back, and the sliding frame 11 The back movement drives the backrest to move and return to its original position.

Referring to Figures 2 and 10, the sliding frame 11 is provided with a limiting component 94 for limiting the rotation of the leg rest 17 to the inside of the sofa. The limiting component 94 includes a limiting electric push rod and a limiting block 95. The push rod is fixedly installed on the outer wall of the sliding frame 11, and the limiting block 95 slides horizontally through the side wall of the sliding frame 11, and the sliding direction of the limiting block 95 is parallel to the axis of the second rotating shaft 82, while limiting The position block 95 is located below the second rotating shaft 82 and on the side of the second rotating shaft 82 close to the backrest; at the same time, when the leg rest 17 is rotated to the inside of the sofa for storage, the limiting block 95 extends out of the inner wall of the sliding frame 11. 95 is positioned against the side wall of the second rotating plate 63 away from the backrest to prevent the second rotating plate 63 from rotating; when the second rotating plate 63 needs to rotate, the electric limit push rod starts to drive the limit. The block 95 is away from the second rotating plate 63, so the second rotating plate 63 can rotate freely.

Referring to Figure 2 and Figure 10, the leg rest 17 is rotated to the outside of the sofa, the first rotating plate 62 is pressed against the fixed rod 19, and the piston rod of the electric push rod 92 is driven to continue to move to drive the seat cushion to move, and the seat cushion moves to adjust the position of the backrest. The leg rest 17 is rotated out first, and then when it is necessary to adjust the seat cushion and backrest, the electric push rod 92 is driven to continue to adjust the seat cushion; and the leg rest 17 is rotated to the inside of the sofa, and then the electric limit push rod is started to drive the limit block 95 closer The second rotating plate 63 causes the limiting block 95 to be positioned against the second rotating plate 63, and then the electric push rod 92 is driven to start and drive the second rotating plate 63 to move, while the limiting block 95 limits the rotation of the second rotating plate 63. Therefore, the movement of the second rotating plate 63 drives the seat cushion to move, so that the seat cushion and the backrest can be adjusted independently. When the leg rest 17 needs to be adjusted, the electric limit push rod starts to drive the limit block 95 to separate from the second rotating plate 63, and then the The leg rest 17 can be adjusted individually, so that the seat cushion, backrest, leg rest 17 and expansion board 18 can be adjusted according to people's needs.

The working principle of this application embodiment is:

It is necessary to adjust the seat cushion and backrest separately. The limit electric push rod is activated to drive the limit block 95 to collide with the second rotating plate 63 for positioning. Then the electric push rod 92 is driven to start the support rod 66 to move. Therefore, the limit block 95 is pushed The seat cushion moves and the backrest moves and rotates at the same time. Therefore, the seat cushion and the backrest can be adjusted independently. When the leg rest 17 needs to be rotated out, the limit electric push rod starts to drive the limit block 95 to separate from the second rotating plate 63, and then the leg rest 17 is rotated out. The leg rest 17 and the expansion board 18 can be driven to the outside of the sofa for use.

The electric push rod 92 is started to drive the leg rest 17 and the expansion plate 18 to the outside of the sofa for use, and the first rotating plate 62 conflicts with the fixed rod 19. The electric push rod 92 is continued to be started to drive the first rotating plate 62 to push the sliding frame. 11 moves, the sliding frame 11 moves to adjust the position of the seat cushion and backrest, so the positions of the seat cushion, backrest, leg rest 17 and expansion board 18 can be adjusted according to people's needs, thereby improving people's comfort when using the sofa, and using the same sofa The electric actuator can realize the adjustment, thus saving energy and the cost of the sofa.

Implementation 2

Referring to Figures 2 and 11, the difference between this embodiment and Embodiment 1 is that the driving assembly 9 includes a first electric push rod 96 and a second electric push rod 97. The first electric push rod 96 is rotatably installed on the frame 1 and is located on the side of the sliding frame 11 close to the active rod 21. At the same time, the piston rod of the first electric push rod 96 is rotationally connected to the side wall of the sliding frame 11 close to the active rod 21; the second electric push rod 97 is rotatably installed on the sliding frame 11. The moving frame 11 is close to the side wall of the driving rod 21, and the piston rod of the second electric push rod 97 is rotationally connected to the support rod 66; therefore, the first electric push rod 96 is started to drive the sliding frame 11 to move, and the second electric push rod 97 is The rod 97 starts to drive the driving plate 91 to rotate.

The working principle of this application embodiment is:

The first electric push rod 96 is started to drive the sliding frame 11 to move, and the second electric push rod 97 is started to drive the drive plate 91 and the leg rest 17 to rotate, so the sliding frame 11 and the seat cushion can move independently, and the leg rest 17 can rotate independently. , thereby increasing the adjustment methods when people use it, thus further improving the comfort of people when using the sofa.

Implementation three

Referring to Figures 2 and 12, the difference between this embodiment and Embodiment 1 is that the end of the fixed connecting plate 12 away from the driven rod 22 and the driving rod 21 is inclined downward and is integrally provided with a connecting portion 24, and the connecting portion 24 The end away from the fixed connecting plate is arranged tilted upward.

Implementation four

Referring to Figure 4, the difference between this embodiment and Embodiment 1 is that the seat spring mechanism 4 includes a plurality of tension springs and tension hooks integrally provided on both ends of the tension spring, and the shape of the tension spring is consistent with the multiple seat spring assemblies. 41 have the same shape after assembly; hooks are hung on the main pipe 13 and the auxiliary pipe 14 for positioning, and multiple tension springs are arched and used to support the seat cushion.

The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application shall be covered by the scope of protection of the present application. Inside.

Claims (15)

1. A compact sofa iron frame structure, including a frame (1), a sliding frame (11) slidably arranged on the frame (1) and connected to a seat cushion, characterized in that: the frame (1) An adjustment component (2) for adjusting the angle of the backrest is provided, and the adjustment component (2) includes:

   The driving rod (21) and the driven rod (22) are both rotatably installed on the frame (1) and the other ends are rotatably connected to the backrest;

   Linkage rod (23), the linkage rod (23) is rotatably arranged on the active rod (21) and is rotatably connected with the sliding frame (11);

   The frame (1) is provided with a driving assembly (9) that drives and rotates the leg rest (17) provided on the sliding frame (11), and the sliding frame (11) is provided with a pair of leg rests (17). 17) Fixed rod (19) for limiting position.
2. A compact sofa iron frame structure according to claim 1, characterized in that: the sliding frame (11) is provided with a telescopic component (10) that drives the seat cushion to extend, and the telescopic component (10) includes;

   Telescopic plate (101), the telescopic plate (101) is slidably arranged on the sliding frame (11) and connected with the seat cushion;

   Telescopic motor (102), the telescopic motor (102) is arranged on the sliding frame (11);

   Telescopic screw rod (103), the telescopic screw rod (103) is rotatably arranged on the sliding frame (11) and is connected to the output shaft of the telescopic motor (102) and is threadedly connected to the telescopic plate (101).
3. A compact sofa iron frame structure according to claim 1, characterized in that: the frame (1) is provided with a limiting component (94), and the limiting component (94) includes:

   A limit electric push rod, which is arranged on the sliding frame (11);

   Limiting block (95), the limiting block (95) is slidably provided on the sliding frame (11) and is connected to the limiting electric push rod piston rod;

   When the leg rest (17) is rotated and placed inside the sofa, the limiting block (95) presses against the leg rest (17) to prevent the leg rest (17) from rotating, so that the driving assembly (9) It can drive the sliding frame (11) to move independently.
4. A compact sofa iron frame structure according to claim 1, characterized in that: the driving assembly (9) includes: a driving plate (91), and the driving plate (91) is arranged on the leg rest (17) ;

   The driving electric push rod (92) is rotatably installed on the frame (1) and is rotationally connected with the driving plate (91).
5. A compact sofa iron frame structure according to claim 1, characterized in that: the driving assembly (9) includes:

   A first electric push rod (96), which is rotatably installed on the frame (1) and is rotationally connected with the sliding frame (11);

   The second electric push rod (97) is rotatably arranged on the sliding frame (11) and is rotationally connected with the leg rest (17).
6. A compact sofa iron frame structure according to claim 1, characterized in that: the frame (1) is provided with a support mechanism (6) for supporting the leg rest (17). When the leg rest (17) ) when in use, the leg rest (17) is flush with the upper surface of the seat cushion, and the leg rest (17) is in a vertical state when recovered. The support mechanism (6) includes:

   Support plate (61), the support plate (61) is provided on the leg rest (17);

   The first rotating plate (62) and the second rotating plate (63) are all rotatably arranged on the sliding frame (11);

   A third rotating plate (64), which is rotatably arranged on the second rotating plate (63) and is rotatably connected to the first rotating plate (62) and the support plate (61);

   The fourth rotating plate (65) is rotatably disposed on the end of the first rotating plate (62) away from the sliding frame (11) and is rotatably connected to the support plate (61);

   Support rod (66), the support rod (66) is arranged on the first rotating plate (62), and the driving assembly (9) is connected with the support rod (66).
7. A compact sofa iron frame structure according to claim 6, characterized in that: the support plate (61) is provided with an expansion plate (18) through the connecting assembly (7), and the leg rest (17) rotates When used outside the sofa, the expansion board (18) can be rotated to the side of the leg rest (17) away from the sofa and cooperates with the leg rest (17) to support the legs. When the leg rest (17) is retracted, The expansion board (18) is turned to the side of the leg rest (17) close to the inside of the sofa, and the connection component (7) includes:

   A first connecting plate (71), which is rotatably mounted on the support plate (61);

   A second connecting plate (72). Both ends of the second connecting plate (72) are rotationally connected to the first connecting plate (71) and the fourth rotating plate (65) respectively.
8. A compact sofa iron frame structure according to claim 1, characterized in that: the driving rod (21) is provided with a fixed connecting plate that is rotationally connected to the driven rod (22) and used to be fixedly connected to the backrest. (12).
9. A compact sofa iron frame structure according to claim 8, characterized in that: the driving rod (21) is rotationally connected to the frame (1) through a rotating assembly (3), and the rotating assembly (3) )include:

   Step bolt (31), the step bolt (31) passes through the frame (1) and is threadedly connected to the driving rod (21);

   Rotating bushing (32), the rotating bushing (32) is snap-fitted on the frame (1) through the snap-in groove and is rotationally connected to the frame (1); the step bolt (31) passes through the rotating bushing. The sleeve (32) is threadedly connected to the driving rod (21) so that the step bolt (31) and the driving rod (21) are pressed against the rotating bushing (32).
10. A compact sofa iron frame structure according to claim 8, characterized in that one end of the fixed connecting plate (12) away from the driving rod (21) and the driven rod (22) is inclined downward.
11. A compact sofa iron frame structure according to claim 1, characterized in that: the sliding frame (11) is provided with a seat spring mechanism (4) to support the seat cushion.
12. A compact sofa iron frame structure according to claim 11, characterized in that: the seat spring mechanism (4) includes:

    Multiple seat spring assemblies (41). One end of the multiple seat spring assemblies (41) is provided with a plurality of hooks hung on the sliding frame (11), and the other end is connected to the sliding frame (11) through the fixing assembly (5). The frame (11) is detachably connected;

    A connecting horizontal plate (42) is provided on multiple seat spring assemblies (41) and is used to connect multiple seat spring assemblies (41) together. 13. A compact sofa iron frame structure according to claim 12, characterized in that: the fixing component (5) includes:

    Fixed plate (51), the fixed plate (51) is located on the sliding frame (11), and the seat spring assembly (41) is placed on the fixed plate (51);

    Elastic pressure plate (52), the elastic pressure plate (52) is arranged on the fixed plate (51) and presses against the seat spring assembly (41) for positioning.
13. [Correction 30.12.2022 under Rule 91]
    A compact sofa iron frame structure according to claim 12, characterized in that: the fixing component (5) includes:
    Fixed plate (51), the fixed plate (51) is located on the sliding frame (11), and the seat spring assembly (41) is placed on the fixed plate (51);
    Elastic pressure plate (52), the elastic pressure plate (52) is arranged on the fixed plate (51) and presses against the seat spring assembly (41) for positioning.
14. [Correction 30.12.2022 under Rule 91]
    A compact sofa iron frame structure according to claim 12, characterized in that: the hook and the end of the seat spring assembly (41) away from the hook are respectively provided with first positioning sleeves made of plastic material. (15) and the second positioning sleeve (16). The first positioning sleeve (15) and the second positioning sleeve (16) respectively conflict with the sliding frame (11) and the fixed plate (51). A certain positioning sleeve (15) is fixedly connected together through a fixed horizontal plate (151).
15. [Correction 30.12.2022 under Rule 91]
    A compact sofa iron frame structure according to claim 11, characterized in that the seat spring mechanism (4) includes a plurality of tension springs and tension hooks arranged on the plurality of tension springs, and the tension hooks are hung on Position on the sliding frame (11).

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