A sofa extension device with zero wall leaning function

Abstract

The present application relates to a sofa extension device with a zero-wall-leaning function, and relates to the technical field of functional sofas, including a seat frame, a support plate, a leg support assembly, and a driving assembly. A rotating mechanism is provided on the iron frame, and the rotating mechanism includes: a rotating plate, which is rotatably provided on the seat frame and is rotatably connected to the support plate; a locking member, which is provided on the leg support assembly and is used to lock the position of the leg support assembly after opening; a rotating assembly, which is provided on the iron frame and is rotatably connected to the rotating plate, and the support plate is driven to rotate by the rotating assembly when the seat frame moves. The present application drives the backrest away from the wall and flips down and falls down at the same time through the seat frame, so that when the sofa is installed, the backrest can be positioned against the wall, thereby improving the space utilization of the sofa, and also improving the stability of the sofa after installation, thereby improving the user experience of the sofa.

Description

Technical Field

[0001] The present application relates to the technical field of functional sofas, and in particular to a sofa extension device with a zero-wall-leaning function. Background Art

[0002] In order to meet people's different usage needs, the current multifunctional sofa generally has three states: sitting position, TV position and lying position, and the changes in the three postures are all completed by moving the seat frame installed on the iron frame. When the seat frame moves, it drives the leg support assembly to open to support the legs, so as to achieve the transition from sitting position to TV position, and the movement of the seat frame drives the backrest to flip and lay down the backrest, so as to achieve the transition from TV position to lying position, thereby realizing the change of three postures.

[0003] However, when the backrest is flipped down and folded down, the backrest will rotate backwards outside the sofa and collide with the wall, so that the multifunctional sofa will be installed away from the wall, thereby reducing the space utilization rate of the sofa. At the same time, the sofa is not positioned against the wall after installation, which also reduces the stability of the sofa and thus reduces the user experience of the sofa. Summary of the invention

[0004] In order to improve the user experience of the sofa, the present application provides a sofa extension device with zero wall-leaning function.

[0005] The present application provides a sofa extension device with zero wall leaning function, which adopts the following technical solution:

[0006] A sofa extension device with zero wall leaning function, comprising a seat frame slidably mounted on an iron frame, a support plate rotatably mounted on the seat frame and connected to a backrest, a leg support assembly rotatably mounted on the seat frame, and a driving assembly arranged on the iron frame and used to drive the leg support assembly to rotate, wherein the iron frame is provided with a rotating mechanism connected to the seat frame and used to drive the support plate to rotate, and the rotating mechanism comprises:

[0007] A rotating plate, the rotating plate is rotatably disposed on the seat frame and is rotatably connected to the supporting plate;

[0008] A locking member, the locking member being disposed on the leg support assembly and being used to lock the leg support assembly in an opened position;

[0009] The rotating assembly is arranged on the iron frame and is rotatably connected with the rotating plate. When the seat frame moves, the supporting plate is driven to rotate by the rotating assembly.

[0010] By adopting the above technical solution, the driving component starts to drive the leg support component to rotate to the outside of the sofa for supporting the legs, and the locking member locks the position of the leg support component, so as to realize the sofa from sitting posture to TV posture, and the driving component continues to start to drive the leg support component and the seat frame to move together, so that the seat frame, the support plate and the backrest are away from the wall, and the seat frame moves and drives the support plate to rotate through the rotating component to realize the backrest to be folded down, thereby realizing the sofa from TV posture to lying posture, and the reverse movement can realize the backrest to be reversed and opened for use;

[0011] The seat frame drives the backrest to move away from the wall and flip it down at the same time, so that when the sofa is installed, the backrest can be placed against the wall for positioning, thereby realizing the zero backrest function of the sofa, thereby improving the space utilization of the sofa, and also improving the stability of the sofa after installation, thereby improving the user experience of the sofa.

[0012] Optionally, a waist-shaped avoidance hole is provided on the seat frame, and the rotating assembly is provided with an avoidance column which slides up and down on the avoidance hole.

[0013] By adopting the above technical solution, the movement of the seat frame drives the rotating assembly to rotate and move, so that the avoidance column moves and presses against the avoidance hole, and then the movement of the seat frame drives the rotating plate and the backrest to rotate. Therefore, the movement of the seat frame drives the support plate and the backrest to move a distance toward the side away from the wall first, and then the movement of the seat frame drives the backrest to move away from the wall and flip downward at the same time, thereby further reducing the probability of the backrest colliding with the wall when it is folded down, thereby further increasing the space utilization rate of the sofa, improving the stability of the sofa, and improving the user experience of the sofa;

[0014] At the same time, when the driving assembly drives the leg support assembly to rotate and open, it is easy to push the seat frame to move. It is easy for the leg support assembly to not be fully opened and the backrest to start to flip, thereby making the posture adjustment sequence of the sofa out of control, thereby reducing the user experience of the sofa; therefore, the avoidance column and the avoidance hole are used to buffer the movement of the seat frame, thereby reducing the risk of the adjustment sequence of the sofa being out of control and improving the user experience of the sofa.

[0015] Optionally, the rotating assembly includes:

[0016] A first push plate, the first push plate is rotatably arranged on the iron frame;

[0017] a second push plate, the second push plate being rotatably disposed on the rotating plate and being rotatably connected to the first push plate;

[0018] A third pushing plate is rotatably arranged on the second pushing plate, and the avoidance column is arranged on the third pushing plate.

[0019] By adopting the above technical solution, the movement of the seat frame drives the movement of the rotating plate, and the movement of the rotating plate drives the second push plate to move and rotate, and the second push plate rotates relative to the first push plate, and at the same time drives the third push plate and the avoidance column to rotate and move, so that after the avoidance column is pressed against the avoidance hole, the seat frame continues to move and drives the rotating plate to rotate, and the rotation of the rotating plate drives the backrest to rotate and lay down the backrest, and the reverse movement of the seat frame can drive the backrest to reverse and open the backrest for use, and at the same time, the movement of the leg support assembly and the movement of the backrest are realized simultaneously through the driving assembly, thereby improving the compactness and space utilization of the sofa, and improving the user experience of the sofa.

[0020] Optionally, the rotating assembly includes:

[0021] A first moving plate, the first moving plate being rotatably disposed on an iron frame;

[0022] A movable seat, wherein the movable seat is slidably arranged on the iron frame;

[0023] a second moving plate, the second moving plate being rotatably disposed on the moving seat and rotatably connected to the first moving plate;

[0024] A third moving plate, the third moving plate being rotatably disposed on the second moving plate and rotatably connected to the rotating plate;

[0025] A fourth moving plate, the fourth moving plate is rotatably arranged on the third moving plate, and the avoidance column is arranged on the fourth moving plate.

[0026] By adopting the above technical solution, the movement of the seat frame drives the rotating plate to move, and the movement of the rotating plate drives the third moving plate to move and rotate, and the third moving plate drives the second moving plate to move and rotate, and the second moving plate and the first moving plate produce relative rotation, and at the same time drive the fourth moving plate and the avoidance column to move and rotate, so that the avoidance column is pressed against the avoidance hole, and then the seat frame continues to move, so that the rotating plate rotates to avoid the position, so the rotating plate drives the support plate and the backrest to rotate for laying down the backrest, and the seat frame moves back to drive the backrest to reverse and open for use, so as to realize the adjustment of the backrest angle, and at the same time, the movement of the moving seat makes the operation of the backrest more stable during adjustment, thereby improving the use experience of the sofa.

[0027] Optionally, the seat frame is provided with a linkage assembly connected to the support plate, and the linkage assembly includes:

[0028] A slider, the slider being slidably arranged on the iron frame;

[0029] A linkage plate, wherein one end of the linkage plate and the rotating plate are both rotatably disposed on the slider;

[0030] Two follower plates, one end of each of which is rotatably arranged on the linkage plate and the other end of which is rotatably connected to the seat frame;

[0031] A linkage rod, one end of which is connected to the leg support assembly and the other end of which is rotationally connected to one of the follower plates. When the leg support assembly is opened, the seat frame is pushed by the linkage rod to move toward a side away from the backrest.

[0032] By adopting the above technical solution, when the leg support assembly is opened, the follower plate is driven to rotate through the linkage rod, and the rotation of the follower plate pushes the seat frame to move toward the side away from the backrest and the wall, and the support plate and the backrest are located on the slider, so the seat frame moves without driving the backrest to move, so that the distance between the seat frame and the backrest is increased, thereby increasing the space when the support plate and the backrest are rotated, and improving the convenience when the support plate and the backrest are rotated, and after the leg support assembly is stored and drives the seat frame to move back, the backrest is rotated and opened for use, so the seat frame can position the support plate and the backrest, thereby further improving the stability and convenience of the sofa, and improving the use experience of the sofa.

[0033] After the locking piece of the leg support assembly is locked, the leg support assembly positions the linkage plate and the seat frame through the linkage rod, so that the seat frame, linkage plate, support plate, backrest and slider are locked as a whole. Therefore, when the driving assembly starts to drive the leg support assembly and the seat frame to move, the linkage plate, support plate and backrest move together, thereby achieving the function of increasing the rotation space of the backrest while also driving the subsequent adjustment of the backrest.

[0034] Optionally, a connection component connected to the support plate is provided on the linkage plate, and the connection component includes:

[0035] A first connecting plate, which is rotatably disposed on the linkage plate and rotatably connected to the support plate;

[0036] A driving plate, the driving plate is rotatably disposed on the linkage plate through a driving rod and is rotatably connected to the support plate;

[0037] The second connecting plate is rotatably disposed on the rotating plate and is rotatably connected to the driving plate.

[0038] By adopting the above technical solution, the movement of the seat frame drives the linkage plate and the rotating plate to move, the rotating plate rotates under the action of the rotating assembly, the rotation of the rotating plate drives the second connecting plate to rotate, the rotation of the second connecting plate drives the driving plate to rotate, and the rotation of the driving plate drives the support plate and the backrest to rotate. Therefore, the backrest is driven to rotate through multiple actions, thereby increasing the angle of rotation of the backrest when the rotating plate rotates the same angle, thereby shortening the distance required to move when the seat frame moves to fold down the backrest, thereby increasing the space for other accessories to move, thereby reducing the design difficulty of the sofa; at the same time, it also shortens the distance from the leg support assembly to the outside of the sofa, thereby reducing the probability of the sofa tilting forward and improving the user experience of the sofa.

[0039] Optionally, the driving rod divides the driving plate into a first driving part and a second driving part, the length of the first driving part is smaller than that of the second driving part and one end away from the driving rod is rotatably connected to the second connecting plate and the supporting plate.

[0040] By adopting the above technical solution, the length of the first driving part is smaller than the length of the second driving part, thereby increasing the distance that the second connecting plate rotates by the same angle to drive the supporting plate to rotate, thereby further shortening the distance that the seat frame needs to move to fold down the backrest, thereby reducing the design difficulty of the sofa and improving the user experience of the sofa.

[0041] Optionally, a stabilizing component connected to the rotating plate is provided on the iron frame, and the stabilizing component includes:

[0042] A stabilizing column, wherein the stabilizing column is arranged on the rotating plate;

[0043] A tension spring, both ends of which are hooked on the stabilizing column and the iron frame.

[0044] By adopting the above technical solution, the leg support assembly will generate thrust on the seat frame when it rotates, and the thrust can easily drive the seat frame to move, thereby causing the sofa posture adjustment sequence to be out of control, thereby reducing the user experience of the sofa; therefore, the tension spring buffers the thrust of the seat frame when the leg support assembly rotates, and the tension spring can also be replaced at the same time, thereby reducing the risk of the sofa posture adjustment being out of control and improving the user experience of the sofa.

[0045] Optionally, the iron frame is provided with an anti-falling assembly connected to the rotating plate, and the anti-falling assembly includes:

[0046] A sleeve, the sleeve being rotatably arranged on an iron frame;

[0047] The anti-falling rod is slidably arranged on the sleeve and is rotatably connected with the rotating plate. The movement of the rotating plate drives the anti-falling rod to move and rotate toward or away from the ground, and the anti-falling rod is pressed against the ground to prevent the sofa from tipping over.

[0048] By adopting the above technical solution, the movement of the seat frame drives the movement of the rotating plate, and the movement of the rotating plate drives the anti-falling rod to approach the ground and rotate toward the side close to the ground. Therefore, when the sofa tilts forward during the movement of the seat frame, the anti-falling rod is pressed against the ground, and at the same time, the anti-falling rod is driven to move as the seat frame moves, thereby pushing the sofa back to its original position. At the same time, when the sofa is adjusted to a lying position, the anti-falling rod is pressed against the ground to position the sofa, thereby reducing the probability of the sofa tilting forward and improving the user experience of the sofa.

[0049] Optionally, a rubber ball that presses against the ground is detachably mounted on the anti-fall rod.

[0050] By adopting the above technical solution, the rubber ball contacts the ground on the anti-fall bar for buffering, which reduces the vibration of the sofa and increases the friction between the ground, thereby improving the stabilizing effect of the anti-fall bar on the sofa, thereby further improving the user experience of the sofa.

[0051] In summary, the present application includes at least one of the following beneficial technical effects:

[0052] The seat frame drives the backrest away from the wall and flips it down at the same time, so that when the sofa is installed, the backrest can be placed against the wall for positioning, thereby improving the space utilization of the sofa and also improving the stability of the sofa after installation, thereby improving the user experience of the sofa. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present application, wherein the sofa is in a sitting position;

[0054] Figure 2 It is a structural schematic diagram of the first embodiment of the present application, wherein the sofa is in a lying position;

[0055] Figure 3 It is a structural schematic diagram of a rotating assembly in the first embodiment of the present application;

[0056] Figure 4 yes Figure 1 The enlarged schematic diagram of the middle A part;

[0057] Figure 5 It is a structural schematic diagram of the rotating assembly in the second implementation of this application.

[0058] Figure numerals: 1, iron frame; 11, seat frame; 12, support plate; 2, leg support assembly; 21, first support plate; 22, second support plate; 23, third support plate; 24, fourth support plate; 25, load-bearing plate; 26, first support column; 27, second support column; 3, drive assembly; 31, drive cross bar; 32, linear motor; 33, connecting cross plate; 4, linkage assembly; 41, slider; 42, linkage plate; 43, follower plate; 44, linkage rod; 45, fixed column; 5, rotating mechanism; 51, rotating plate; 511, avoidance hole; 512, mounting column; 52, locking Components; 53, rotating component; 54, first push plate; 55, second push plate; 56, third push plate; 57, avoidance column; 6, connecting component; 61, first connecting plate; 62, driving plate; 63, second connecting plate; 64, driving rod; 65, first driving part; 66, second driving part; 7, stabilizing component; 71, stabilizing column; 72, tension spring; 8, anti-falling component; 81, sleeve; 82, anti-falling rod; 83, sleeve rod; 84, rubber ball; 91, first moving plate; 92, moving seat; 93, second moving plate; 94, third moving plate; 95, fourth moving plate. DETAILED DESCRIPTION

[0059] The following is combined with Figure 1-5 This application is described in further detail.

[0060] The embodiment of the present application discloses a sofa extension device with zero wall leaning function.

[0061] Example 1

[0062] Reference Figure 1 The sofa extension device with zero wall leaning function includes a seat frame 11 horizontally slidably installed on an iron frame 1, and a seat cushion is fixedly installed on the seat frame 11; a leg support assembly 2 is rotatably installed on the seat frame 11, and the leg support assembly 2 can be stored inside the sofa and can be rotated to the outside of the sofa for supporting the legs. A driving assembly 3 for driving the leg support assembly 2 to rotate is provided on the iron frame 1, a support plate 12 fixedly connected to the backrest is rotatably installed on the seat frame 11, and a rotating mechanism 5 connected to the seat frame 11 and used to drive the support plate 12 to rotate is provided on the iron frame 1.

[0063] Reference Figure 1 and Figure 2 , two leg support assemblies 2 are arranged at intervals perpendicular to the sliding direction of the seat frame 11, and the leg support assemblies 2 are located on the side of the seat frame 11 away from the support plate 12. The leg support assembly 2 includes a first support plate 21, a second support plate 22, a third support plate 23, a fourth support plate 24, and a bearing plate 25. The first support column 26 and the second support column 27 with parallel axes are fixedly installed on the opposite side walls of the seat frame 11, and the first support column 26 is located on the side of the second support column 27 close to the support plate 12. At the same time, the axis of the first support column 26 is perpendicular to the sliding direction of the seat frame 11; one end of the first support plate 21 and the second support plate 22 are both rotatably mounted on the first The support column 26 and the second support column 27, and one end of the third support plate 23 is rotatably mounted on the end of the first support plate 21 away from the first support column 26 and is rotatably connected to the side wall of the second support plate 22, and one end of the fourth support plate 24 is rotatably mounted on the end of the second support plate 22 away from the second support column 27; the bearing plate 25 is rotatably connected to the end of the third support plate 23 away from the first support plate 21 and the end of the fourth support plate 24 away from the second support plate 22, and at the same time, horizontal plates are fixedly mounted on the two bearing plates 25, and the horizontal plates are used to support the legs, and the rotation direction axes of all components of the leg support assembly 2 are parallel to the axis of the first support column 26.

[0064] Reference Figure 1 and Figure 2The driving assembly 3 includes a driving cross bar 31 and a linear motor 32. A connecting cross plate 33 rotatably connected to the second support plate 22 is rotatably installed on the first support plate 21. The driving cross bar 31 is fixedly installed on the two connecting cross plates 33, and the driving cross bar 31 is in a horizontal state; the linear motor 32 body is rotatably installed on the side wall of the iron frame 1 located on the side of the seat frame 11 close to the support plate 12. At the same time, the piston rod of the linear motor 32 is rotatably connected to the driving cross bar 31. At the same time, the rotation direction axis of the connection between the linear motor 32 and the iron frame 1 and the connection between the driving cross bar 31 are parallel to the axis of the first support column 26; the linear motor 32 is started to drive the driving cross bar 31 to rotate, and the driving cross bar 31 rotates to drive the first support plate 21, the second support plate 22, the third support plate 23 and the fourth support plate 24 to rotate, thereby driving the bearing plate 25 and the horizontal plate to rotate, so as to realize the horizontal plate being turned to the outside of the sofa for supporting the legs, and at the same time, the linear motor 32 is started to drive the driving rod 64 to rotate, so that the horizontal plate can be turned into the sofa for storage.

[0065] Reference Figure 1 and Figure 2 A linkage assembly 4 connected to the support plate 12 is provided on the seat frame 11, and two support plates 12 and linkage assemblies 4 are arranged at intervals perpendicular to the sliding direction of the seat frame 11 and are located on both sides of the seat frame 11; the linkage assembly 4 includes a slider 41, a linkage plate 42, two follower plates 43 and a linkage rod 44, the slider 41 is slidably installed on the iron frame 1 along the sliding direction of the seat frame 11, and the slider 41 is located on the side of the support plate 12 away from the seat frame 11; horizontal fixing columns 45 are fixedly installed on the side walls on the opposite sides of the two sliders 41, and the axis of the fixing column 45 is perpendicular to the sliding direction of the seat frame 11.

[0066] Reference Figure 1 and Figure 2 , there are also two rotating mechanisms 5 and they are respectively arranged in one-to-one correspondence with the two linkage components 4. The rotating mechanism 5 includes a rotating plate 51. One end of the linkage plate 42 and the rotating plate 51 are both rotatably mounted on the fixed column 45, and the other ends of the linkage plate 42 and the rotating plate 51 extend to the side of the support plate 12 close to the seat frame 11. At the same time, the two linkage plates 42 are located on the inner sides of the two rotating plates 51, and the linkage plate 42 and the rotating plate 51 are located below the seat frame 11; the bottom ends of the two follower plates 43 are rotatably mounted on the linkage plate 42, and the top ends of the two follower plates 43 are both rotatably connected to the side walls of the seat frame 11, and the two follower plates 43 are arranged parallel to each other.

[0067] Reference Figure 1 and Figure 2When the sofa is in a sitting position, the follower plate 43 is in an inclined state and the bottom end is toward the side close to the leg support assembly 2; at the same time, the two ends of the linkage rod 44 are respectively connected to the top of the first support plate 21 and the side wall of the follower plate 43 close to the leg support assembly 2, and the connection between the linkage rod 44 and the follower plate 43 is located between the bottom and the top of the follower plate 43; when the sofa is turned to a TV position, the top of the first support plate 21 rotates around the first support column 26 toward the side close to the support plate 12 and the backrest, and the first support plate 21 drives the bottom end of the follower plate 43 to rotate toward the support plate 12 and the backrest through the linkage rod 44, and the slider 41 contacts the side wall of the iron frame 1, making the linkage plate 42 unable to move, thereby causing the seat frame 11 to move toward the side away from the support plate 12 and the backrest.

[0068] Reference Figure 1 and Figure 2 The rotating mechanism 5 also includes a locking piece 52 and a rotating assembly 53. The locking piece 52 is a locking column, and the two locking columns are fixedly mounted on the side walls on the opposite side of the two third support plates 23. The two second support plates 22 are located between the two third support plates 23. At the same time, the locking column is located on the side of the second support plate 22 away from the support plate 12 and the backrest. When the leg support assembly 2 is opened, the second support plate 22 rotates toward the side close to the locking column. When the opening angle is completed, the second support plate 22 is pressed against the locking column to lock it, so that the leg support assembly 2 cannot continue to rotate; and when the leg support assembly 2 is retracted, the second support plate 22 rotates away from the locking column, thereby realizing the opening and retraction of the leg support assembly 2.

[0069] Reference Figure 1 and Figure 2 The linkage plate 42 is provided with a connecting assembly 6 connected to the support plate 12, and the connecting assembly 6 includes a first connecting plate 61, a driving plate 62 and a second connecting plate 63. The bottom end of the first connecting plate 61 is rotatably mounted on the linkage plate 42, and the top end of the first connecting plate 61 is tilted upward, and the support plate 12 is rotatably mounted on the top end of the first connecting plate 61; a driving rod 64 is fixedly mounted on the linkage plate 42 and located on the side of the first connecting plate 61 close to the seat frame 11, and the axes of the driving rod 64 and the fixing column 45 are parallel, and the driving plate 62 is rotatably mounted On the driving rod 64, the driving rod 64 divides the driving plate 62 into a first driving part 65 and a second driving part 66. At the same time, the ends of the first driving part 65 and the second driving part 66 away from the driving rod 64 are both inclined upward, and the end of the second driving part 66 away from the driving rod 64 is rotatably connected to one end of the support plate 12, and the length of the first driving part 65 is smaller than the length of the second driving part 66; one end of the second connecting plate 63 is rotatably connected to the end of the first driving part 65 away from the driving rod 64, and the other end of the second connecting plate 63 is rotatably connected to the rotating plate 51.

[0070] Reference Figure 2 and Figure 3A waist-shaped avoidance hole 511 is provided on the rotating plate 51 and between the two follower plates 43. The rotating assembly 53 is arranged on the iron frame 1 and is rotatably connected to the rotating plate 51. The rotating assembly 53 is used to drive the rotating plate 51 to rotate. At the same time, the rotating assembly 53 is located on the side of the rotating plate 51 away from the fixed column 45 and the slider 41; the rotating assembly 53 includes a first push plate 54, a second push plate 55 and a third push plate 56, and one end of the first push plate 54 is rotatably mounted on the iron frame 1; a horizontal mounting column 512 is fixedly mounted on one end of the rotating plate 51 away from the slider 41, and the axes of the mounting column 512 and the fixed column 45 are parallel; the second push plate 55 is rotatably mounted on the mounting column 512, and the two ends of the second push plate 55 are respectively inclined to extend to the upper and lower sides of the mounting column 512.

[0071] Reference Figure 2 and Figure 3 The first push plate 54 is tilted downward at one end away from the iron frame 1 and is rotatably connected to the bottom end of the second push plate 55. The top end of the third push plate 56 is rotatably installed on the top end of the second push plate 55, and the bottom end of the third push plate 56 is tilted downward to the avoidance hole 511 and is fixedly installed with an avoidance column 57. At the same time, the avoidance column 57 extends into the avoidance hole 511, and the diameter of the avoidance column 57 is the same as the diameter of the arc segment of the avoidance hole 511, and the avoidance column 57 can rotate and move up and down on the avoidance hole 511.

[0072] Reference Figure 2 and Figure 3 The seat frame 11 moves, driving the linkage plate 42 and the rotating plate 51 to move toward the side of the wall away from the backrest, the linkage plate 42 moves, driving the support plate 12 and the backrest to move together, the rotating plate 51 moves, driving the second push plate 55 to move and rotate, and the first push plate 54 and the second push plate 55 rotate relative to each other, and at the same time, the third push plate 56 and the avoidance column 57 rotate and move upward, so that the avoidance column 57 is pressed against the avoidance hole 511, and the seat frame 11 continues to move, while the linkage plate 42 cannot rotate, so that the end of the rotating plate 51 away from the fixed column 45 rotates downward.

[0073] Reference Figure 2 and Figure 3 The rotating plate 51 rotates downward to drive the second connecting plate 63 to rotate, the second connecting plate 63 rotates to drive the driving plate 62 to rotate, and the driving plate 62 rotates to drive the end of the supporting plate 12 close to the driving plate 62 to rotate upward, thereby realizing the downward rotation of the backrest and laying down the backrest, and the backrest can be reversed by moving the seat frame 11 back, so that the backrest can be reversed and opened for use.

[0074] Reference Figure 1 and Figure 4The iron frame 1 is provided with a stabilizing component 7 and an anti-falling component 8 connected to the rotating plate 51. At the same time, two stabilizing components 7 and anti-falling components 8 are provided and are located at the two rotating plates 51. The stabilizing component 7 includes a stabilizing column 71 and a tension spring 72. The stabilizing column 71 is fixedly mounted on the side wall of the rotating plate 51 away from the linkage plate 42, and one end of the tension spring 72 is hooked on the iron frame 1 and located on the side of the stabilizing column 71 away from the seat frame 11, and the other end of the tension spring 72 is hooked on the stabilizing column 71. At the same time, the tension spring 72 is always in a stretched state. The tension spring 72 is used to buffer the thrust of the seat frame 11 when the leg support component 2 rotates, thereby reducing the probability of the seat frame 11 being driven to move when the leg support component 2 rotates.

[0075] Reference Figure 1 and Figure 4 The anti-fall assembly 8 includes a sleeve 81 and an anti-fall rod 82. A horizontal sleeve rod 83 is rotatably installed on the iron frame 1 and located on the side of the seat frame 11 away from the support plate 12, and the axis of the sleeve rod 83 is parallel to the axis of the fixed column 45; the sleeve 81 is fixedly installed on the sleeve rod 83, and the axis of the sleeve 81 is perpendicular to the axis of the sleeve rod 83; the anti-fall rod 82 is coaxially slidably penetrated on the sleeve 81, and one end of the anti-fall rod 82 extends to the stabilizing column 71 and is provided with a through hole, and the stabilizing column 71 passes through the through hole, so as to realize the rotatable connection between the anti-fall rod 82 and the stabilizing column 71; a threaded section is provided at one end of the anti-fall rod 82 away from the stabilizing column 71, and a rubber ball 84 is threadedly connected to the threaded section, and the rubber ball 84 is made of rubber material, so that the rubber ball 84 is elastic and can form a buffering effect.

[0076] Reference Figure 1 and Figure 4 The movement of the seat frame 11 drives the rotating plate 51 and the stabilizing column 71 to move, and the movement of the stabilizing column 71 pushes the anti-fall rod 82 and the rubber ball 84 to rotate around the axis of the sleeve rod 83 and move toward the ground. Therefore, when the seat frame 11 tilts forward, the rubber ball 84 presses against the ground for buffering, and with the movement of the rubber ball 84 and the rebound force of the rubber ball 84, the forward-leaning seat frame 11 moves back. At the same time, when the sofa is completely turned into a lying position, the rubber ball 84 presses against the ground to position the sofa, thereby reducing the risk of the sofa tilting forward and improving the user experience of the sofa.

[0077] The working principle of the embodiment of the present application is as follows:

[0078] The linear motor 32 starts to drive the bearing plate 25 and the horizontal plate to rotate to the outside of the sofa for supporting the legs, and the locking column positions the horizontal plate, so as to realize the sofa from a sitting position to a TV position. At the same time, when the bearing plate 25 rotates, the seat frame 11 is driven to move toward the side away from the backrest through the linkage rod 44, so as to achieve avoidance for the subsequent rotation of the support plate 12 and the backrest; and the linear motor 32 continues to start to drive the seat frame 11 to continue to move, and the movement of the seat frame 11 drives the support plate 12 and the backrest away from the wall, and at the same time drives the linkage plate 42 and the rotating plate 51 to move together, and the movement of the rotating plate 51 drives the avoidance column 57 to press against the avoidance hole 511 , and the rotating plate 51 continues to move, so that the end of the rotating plate 51 away from the slider 41 rotates downward, and the rotation of the rotating plate 51 can realize the downward rotation of the support plate 12 and the backrest to fold down the backrest, thereby realizing the sofa from the TV posture to the lying posture. Therefore, the backrest is first away from the wall and then rotated downward to be folded down. Therefore, when the sofa is installed, the backrest can be placed against the wall for positioning, thereby improving the space utilization and stability of the sofa; at the same time, the movement of the rotating plate 51 drives the anti-fall rod 82 and the rubber ball 84 to approach the ground, so that the rubber ball 84 is pressed against the ground for positioning, thereby reducing the probability of the sofa tipping forward, thereby improving the user experience of the sofa.

[0079] Example 2

[0080] Reference Figure 2 and Figure 5 The difference between this embodiment and the embodiment 1 is that the rotating assembly 53 includes a first moving plate 91, a moving seat 92, a second moving plate 93, a third moving plate 94 and a fourth moving plate 95, one end of the first moving plate 91 is rotatably mounted on the side wall of the iron frame 1, and the moving seat 92 is slidably mounted on the iron frame 1 along the sliding direction of the seat frame 11, and the moving seat 92 is located between the first moving plate 91 and the rotating plate 51, the second moving plate 93 is rotatably mounted on the moving seat 92, and the two ends of the second moving plate 93 are respectively inclined to the upper and lower sides of the moving seat 92, and at the same time The first moving plate 91 is tilted downward at one end away from the iron frame 1 and is rotatably connected to the bottom end of the second moving plate 93; the top end of the third moving plate 94 is rotatably connected to the top end of the second moving plate 93, and the bottom end of the third moving plate 94 is tilted downward and rotatably connected to the rotating plate 51; the top end of the fourth moving plate 95 is rotatably installed on the third moving plate 94, and the bottom end of the fourth moving plate 95 is tilted downward and extends to the avoidance hole 511, and the avoidance column 57 is fixedly installed on the side wall of the fourth moving plate 95, and the rotation direction axes of each component in the rotating assembly 53 are parallel to each other.

[0081] The working principle of the embodiment of the present application is as follows:

[0082] The movement of the rotating plate 51 drives the third moving plate 94 to move and rotate, and the third moving plate 94 drives the second moving plate 93 to move and rotate, and at the same time drives the fourth moving plate 95 and the avoidance column 57 to move upward and rotate, so that the avoidance column 57 is pressed against the avoidance hole 511, and the rotating plate 51 continues to move to realize the rotation of the rotating plate 51, thereby driving the rotating plate 51 to rotate. At the same time, through the setting of the moving seat 92, the stability of the rotating assembly 53 when driving the rotating plate 51 to rotate is further improved, thereby improving the user experience of the sofa.

[0083] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sofa extension device with zero wall leaning function, comprising a seat frame (11) slidably mounted on an iron frame (1), a support plate (12) rotatably mounted on the seat frame (11) and connected to a backrest, a leg support assembly (2) rotatably mounted on the seat frame (11), and a driving assembly (3) mounted on the iron frame (1) and used to drive the leg support assembly (2) to rotate, characterized in that: The iron frame (1) is provided with a rotating mechanism (5) connected to the seat frame (11) and used to drive the support plate (12) to rotate. The rotating mechanism (5) comprises: A rotating plate (51), the rotating plate (51) being rotatably disposed on the seat frame (11) and rotatably connected to the support plate (12); A locking member (52), the locking member (52) being a locking column, the locking column being arranged on the leg support assembly (2) and abutting against the locking column after the leg support assembly (2) is movably opened, so as to lock the position of the leg support assembly (2) after it is opened; A rotating assembly (53), wherein the rotating assembly (53) is disposed on the iron frame (1) and is rotatably connected to the rotating plate (51), and when the seat frame (11) moves, the supporting plate (12) is driven to rotate by the rotating assembly (53); The seat frame (11) is provided with a waist-shaped avoidance hole (511), and the rotating assembly (53) is provided with a avoidance column (57) which is slidably disposed on the avoidance hole (511) up and down; The rotating assembly (53) comprises: A first push plate (54), the first push plate (54) being rotatably disposed on the iron frame (1); a second push plate (55), the second push plate (55) being rotatably disposed on the rotating plate (51) and being rotatably connected to the first push plate (54); A third push plate (56), the third push plate (56) is rotatably disposed on the second push plate (55), and the avoidance column (57) is disposed on the third push plate (56).

2. The sofa extension device with zero wall leaning function according to claim 1, characterized in that: The seat frame (11) is provided with a linkage assembly (4) connected to the support plate (12), and the linkage assembly (4) comprises: A slider (41), wherein the slider (41) is slidably disposed on the iron frame (1); A linkage plate (42), wherein one end of the linkage plate (42) and the rotating plate (51) are both rotatably disposed on the slider (41); Two follower plates (43), one end of the two follower plates (43) being rotatably disposed on the linkage plate (42) and the other end of the two follower plates (43) being rotatably connected to the seat frame (11); A linkage rod (44), one end of which is connected to the leg support assembly (2) and the other end of which is rotationally connected to one of the follower plates (43); when the leg support assembly (2) is opened, the linkage rod (44) pushes the seat frame (11) to move toward a side away from the backrest.

3. The sofa extension device with zero wall leaning function according to claim 2, characterized in that: The linkage plate (42) is provided with a connection assembly (6) connected to the support plate (12), and the connection assembly (6) comprises: A first connecting plate (61), the first connecting plate (61) being rotatably disposed on the linkage plate (42) and rotatably connected to the support plate (12); A driving plate (62), the driving plate (62) being rotatably disposed on the linkage plate (42) via a driving rod (64) and being rotatably connected to the support plate (12); A second connecting plate (63), the second connecting plate (63) is rotatably disposed on the rotating plate (51) and is rotatably connected to the driving plate (62).

4. The sofa extension device with zero wall leaning function according to claim 3, characterized in that: The driving rod (64) divides the driving plate (62) into a first driving portion (65) and a second driving portion (66); the first driving portion (65) is shorter than the second driving portion (66) and one end of the first driving portion (65) away from the driving rod (64) is rotatably connected to the second connecting plate (63) and the supporting plate (12).

5. The sofa extension device with zero wall leaning function according to claim 1, characterized in that: The iron frame (1) is provided with a stabilizing component (7) connected to the rotating plate (51), and the stabilizing component (7) comprises: A stabilizing column (71), wherein the stabilizing column (71) is arranged on the rotating plate (51); A tension spring (72), wherein both ends of the tension spring (72) are hooked on the stabilizing column (71) and the iron frame (1).

6. The sofa extension device with zero wall leaning function according to claim 1, characterized in that: The iron frame (1) is provided with an anti-falling assembly (8) connected to the rotating plate (51), and the anti-falling assembly (8) comprises: A sleeve (81), wherein the sleeve (81) is rotatably mounted on the iron frame (1); An anti-falling rod (82) is slidably arranged on the sleeve (81) and is rotatably connected to the rotating plate (51); the rotating plate (51) moves to drive the anti-falling rod (82) to move and rotate in a direction close to or away from the ground, and the anti-falling rod (82) is pressed against the ground to prevent the sofa from falling.

7. The sofa extension device with zero wall leaning function according to claim 6, characterized in that: A rubber ball (84) pressed against the ground is detachably mounted on the anti-fall rod (82).

Images