Sofa frame and sofa comprising same

Abstract

The invention relates to a sofa frame which comprises a base, a driving device and a plurality of adjusting deformation devices, the adjusting deformation devices are arranged on the base, and each adjusting deformation device comprises a cushion adjusting frame, a foot support rotating frame and a backrest rotating frame; the cushion adjusting frame is movably connected with the base; the backrest rotating frame comprises a backrest bearing piece and a first connecting rod mechanism, one end of the first connecting rod mechanism is rotationally connected with one end of the cushion adjusting frame, and the other end of the first connecting rod mechanism is rotationally connected with the base; one end of each foot support rotating frame is movably connected with the other end of the cushion bearing rod, and the driving device is arranged on the base and used for driving the foot support rotating frames to move at the same time; when the foot support rotating frame moves, the cushion adjusting frame is driven to move synchronously, when the cushion adjusting frame moves, the first connecting rod mechanism and the backrest bearing piece are driven to move, and the rotating angle range of the backrest bearing piece is 0-180 degrees. According to the application, the backrest can be completely laid flat to be in a horizontal state, so that more comfortable and diversified use experiences can be provided.

Description

Technical Field

[0001] The present application relates to the field of furniture, and in particular to a sofa frame and a sofa comprising the frame. Background Art

[0002] In modern home life, sofas are important furniture in the living room. They not only provide rest and relaxation, but also become a key element to show the living taste and space layout art of the residents. With the improvement of people's quality of life, the requirements for the comfort of sofas are getting higher and higher. Among them, the sofa frame is the basis for supporting the entire sofa structure, and its structure directly affects the use experience and durability of the sofa.

[0003] The related technology discloses an iron frame of a sofa with zero wall support, which includes: a seat mounting plate; a linkage mechanism, which is arranged at the rear of the seat mounting plate, and includes: a turning rod and a second extension rod; a backrest mounting plate; and a driving device; wherein the iron frame of the sofa with zero wall support is suitable for changing at least between a sitting position and a lying position under the action of the driving device; the second extension rod is fixedly connected to the seat mounting plate, the turning rod and the second extension rod are hinged at a hinge point B, and the rear of the backrest mounting plate is hinged to the turning rod at a hinge point C through a backrest pull rod; in the sitting position, the angle α between the straight line where the hinge point B and the hinge point C are located and the horizontal plane is 5° to 25°.

[0004] Although the sofa backrest adjustment function in the prior art has improved the user experience to a certain extent, it still has certain limitations. Specifically, the backrest adjustment range of most sofas is limited, and can often only reach a certain tilt angle, but cannot be completely flat to a horizontal state. This limitation is obviously not ideal for users who want to take a deeper rest on the sofa, such as taking a nap or a short sleep. Summary of the invention

[0005] In order to meet the user's demand for a deeper rest state, such as achieving a backrest that is completely laid flat to a horizontal state to provide a more comfortable and diverse user experience, the present application provides a sofa frame and a sofa comprising the frame.

[0006] The present application provides a sofa frame and a sofa including the frame, which adopts the following technical solutions: A sofa frame comprises a base, a driving device and a plurality of adjustment and deformation devices, wherein the plurality of adjustment and deformation devices are arranged on the base, and each of the adjustment and deformation devices comprises a cushion adjustment frame, a footrest rotating frame and a backrest rotating frame; the cushion adjustment frame is movably connected to the base; the backrest rotating frame comprises a backrest supporting member and a first connecting rod mechanism, one end of the first connecting rod mechanism is rotatably connected to one end of the cushion adjustment frame, and the other end of the first connecting rod mechanism is rotatably connected to the base; one end of the footrest rotating frame is movably connected to the other end of the cushion adjustment frame, and the driving device is arranged on the base, and the driving device is used to drive a plurality of the footrest rotating frames to move simultaneously; when the footrest rotating frame moves, the seat cushion adjustment frame drives the first connecting rod mechanism to move when it moves, and when the first connecting rod mechanism moves, the backrest supporting member is driven to rotate when it moves, and the rotation angle range of the backrest supporting member is 0-180°.

[0007] By adopting the above technical solution, the sofa can achieve a seamless transition from sitting to lying position through multiple adjustment and deformation devices on the base. The driving device accurately controls the movement of the footrest rotating frame, thereby driving the seat cushion adjustment frame to move synchronously. When the seat cushion adjustment frame moves, it drives the first connecting rod mechanism to move, driving the backrest support member to rotate freely within the range of 0-180°. The backrest support member can be slowly and steadily tilted forward or backward, which improves the user's comfort experience. In addition, the ability to completely flatten the backrest to a horizontal state meets the user's needs for deeper rest, whether it is a nap or a short sleep, it can provide a comfortable feeling like a bed.

[0008] Optionally, the backrest supporting member includes a movable part and a supporting part, one end of the supporting part is fixedly connected to the middle part of the movable part; the first connecting rod mechanism includes a mounting rod, a first connecting rod, a second connecting rod and a movable connecting member; the mounting rod is arranged on the seat cushion adjustment frame, one end of the first connecting rod is rotatably connected to the middle part of the mounting rod, and the other end of the first connecting rod is rotatably connected to one end of the movable part; the movable connecting member is V-shaped, the movable connecting member is rotatably connected to the end of the mounting rod through the corner point, and one end of the movable connecting member is rotatably connected to the other end of the movable part; one end of the second connecting rod is rotatably connected to the base, and the other end of the second connecting rod is rotatably connected to the other end of the movable connecting member; the supporting part is used for mounting the backrest of the sofa, and the rotation angle range of the supporting part is 0-180°.

[0009] By adopting the above technical solution, the backrest supporting member is divided into a movable part and a supporting part. One end of the supporting part is fixedly connected to the middle of the movable part, providing a stable support for the installation of the backrest. When the driving device is started, the movement of the seat adjustment frame drives the installation rod to move, and then the movable part is driven to rotate through the first connecting rod. At the same time, the V-shaped movable connecting part uses its corner point as a fulcrum, one end rotates with the movable part, and the other end is connected to the base through the second connecting rod, so as to realize the stable forward or backward tilting of the backrest supporting member. As the installation part of the backrest, the supporting part can rotate freely within the range of 0-180°, meeting the user's various needs from sitting to lying, and improving the comfort and practicality of the sofa.

[0010] Optionally, the seat adjustment frame includes a seat support rod and a second connecting rod mechanism, and the seat support rod moves relative to the base through the second connecting rod mechanism; the first connecting rod mechanism and the second connecting rod mechanism are connected by an elastic member, and the foot rest rotating frame is arranged on the seat support rod.

[0011] By adopting the above technical solution, the seat support rod can realize relative movement with the base through the second link mechanism, so that the position of the seat can be flexibly adjusted according to needs. The first link mechanism and the second link mechanism are connected by an elastic member, which not only enhances the stability of the sofa structure, but also makes the adjustment process smoother and more natural. The footrest rotating frame is cleverly arranged on the seat support rod and works in conjunction with the driving device to achieve seamless conversion of the sofa from sitting position to lying position.

[0012] Optionally, the second linkage mechanism includes a linkage plate, a first linkage assembly and a second linkage assembly; the linkage plate is located between the base and the seat cushion supporting rod, the linkage plate is movably connected to the base via the first linkage assembly, and the seat cushion supporting rod is movably connected to the linkage plate via the second linkage assembly; one end of the elastic member is rotatably connected to the first linkage assembly, and the other end of the elastic member is rotatably connected to the second linkage assembly.

[0013] By adopting the above technical solution, the linkage plate is used as an intermediate bridge and is movably connected to the base through the first connecting rod assembly, while the cushion support rod is movably connected to the linkage plate through the second connecting rod assembly, forming a stable and flexible transmission structure. One end of the elastic member is rotatably connected to the first connecting rod assembly, and the other end is rotatably connected to the second connecting rod assembly, which not only provides good cushioning and support for the sofa, but also enables the sofa to change its posture more smoothly and stably during the adjustment process.

[0014] Optionally, the first connecting rod assembly includes a third connecting rod, a first linkage rod, a fourth connecting rod, a second linkage rod, a fifth connecting rod, and a sixth connecting rod; one end of the third connecting rod is rotatably connected to the base, one end of the first linkage rod is rotatably connected to the middle part of the third connecting rod, and the other end of the first linkage rod is rotatably connected to the linkage plate; one end of the fourth connecting rod is rotatably connected to the base, one end of the second linkage rod is rotatably connected to the middle part of the fourth connecting rod, and the other end of the second linkage rod is rotatably connected to the linkage plate; one end of the fifth connecting rod is rotatably connected to the other end of the fourth connecting rod, and the other end of the fifth connecting rod is rotatably connected to the middle part of the first linkage rod; one end of the sixth connecting rod is rotatably connected to the middle part of the fifth connecting rod, and the other end of the sixth connecting rod is rotatably connected to the other end of the third connecting rod.

[0015] By adopting the above technical solution, the third connecting rod and the fourth connecting rod are respectively connected to the base in rotation, serving as the support basis of the entire connecting rod assembly. The first linkage rod and the second linkage rod are respectively connected to the middle of the third connecting rod and the fourth connecting rod, and are connected in rotation with the linkage plate, thereby realizing flexible relative movement between the linkage plate and the base. The fifth connecting rod and the sixth connecting rod are connected in rotation, tightly connecting the first linkage rod, the fourth connecting rod and the third connecting rod together to form a closed-loop connecting rod mechanism. This not only enhances the stability of the sofa structure, but also enables the sofa to change its posture more smoothly and naturally during the adjustment process, thereby improving the user experience and the overall performance of the sofa.

[0016] Optionally, the first connecting rod assembly further includes a synchronous connecting rod, and the synchronous connecting rod is fixedly connected to the plurality of third connecting rods.

[0017] By adopting the above technical solution, the synchronous movement between the connecting rod assemblies is achieved by adding a synchronous connecting rod and fixing the third connecting rods. This not only enhances the stability and coordination of the entire connecting rod system, but also ensures that the various parts of the sofa can maintain a consistent movement state during the adjustment process, avoiding the jamming or instability caused by the asynchronous movement of the parts.

[0018] Optionally, the second link assembly includes a third linkage rod, a fourth linkage rod and a fifth linkage rod; one end of the third linkage rod is rotatably connected to the linkage plate, and the other end of the third linkage rod is rotatably connected to the seat cushion supporting rod; one end of the fourth linkage rod is rotatably connected to the linkage plate, and the other end of the fourth linkage rod is rotatably connected to the seat cushion supporting rod; one end of the fifth linkage rod is rotatably connected to the linkage plate, and the other end of the fifth linkage rod is rotatably connected to the seat cushion supporting rod; the fifth linkage rod and the fourth linkage rod cross each other but do not contact each other.

[0019] By adopting the above technical solution, not only the flexible relative movement between the cushion support rod and the linkage plate is realized, but also the stability and load-bearing capacity of the sofa structure are enhanced through the coordinated work of the three linkage rods. The fifth linkage rod and the fourth linkage rod cross each other but do not contact each other, which not only ensures the compactness of the linkage assembly but also avoids interference during the movement.

[0020] Optionally, the footrest rotating frame includes a first movable rod, a second movable rod, a third movable rod, a fourth movable rod, a fifth movable rod, a triangular connecting piece and a footrest rotating piece; one end of the first movable rod is rotatably connected to the seat cushion supporting rod, and one end of the second movable rod is rotatably connected to the seat cushion supporting rod; the second movable rod and the fourth movable rod cross each other and are rotatably connected, one end of the third movable rod is rotatably connected to the other end of the second movable rod, and the other end of the third movable rod is rotatably connected to the triangular connecting piece; one end of the fourth movable rod is rotatably connected to the other end of the first movable rod, and the other end of the fourth movable rod is rotatably connected to the triangular connecting piece; one end of the footrest rotating piece is rotatably connected to the triangular connecting piece, one end of the fifth movable rod is rotatably connected to the middle part of the footrest rotating piece, and the other end of the fifth movable rod is rotatably connected to the triangular connecting piece.

[0021] By adopting the above technical solution, when the driving device is started, the first movable rod and the second movable rod, as the starting connection points of the footrest rotating frame, rotate relative to the seat support rod, driving the entire footrest structure to start moving. The second movable rod and the fourth movable rod are intersected and rotatably connected to each other, and the two ends of the third movable rod are respectively rotatably connected to the second movable rod and the triangular connector, forming a stable triangular support structure, ensuring the stability of the footrest during rotation. At the same time, the other end of the fourth movable rod is also rotatably connected to the triangular connector, further enhancing the stability of the structure. The footrest rotating member serves as the direct load-bearing part of the footrest, one end of which is rotatably connected to the triangular connector, and the middle part is rotatably connected to the fifth movable rod. The other end of the fifth movable rod returns to the triangular connector again, which not only enables the footrest to be adjusted at multiple angles according to user needs, but also ensures the smoothness of the adjustment process.

[0022] Optionally, the driving device includes a driving member and a linkage arm, the linkage arm is fixedly connected to the plurality of second movable rods, the driving member is disposed on the base, and the driving member is used to drive the linkage arm to move.

[0023] By adopting the above technical solution, the driving member is firmly arranged on the base, serving as the power source of the entire driving system. When the driving member is started, it drives the plurality of second movable rods to move through the linkage arm, thereby driving the cushion adjustment frame, the footrest rotating frame, the backrest rotating frame and other parts of the sofa to achieve synchronous movement.

[0024] A sofa comprises the sofa frame described in any one of the above items, and also comprises a sofa frame, a sofa backrest, a sofa cushion, a footrest and an armrest; the sofa backrest is fixed to two backrest supporting members through a supporting portion; the sofa cushion is fixed to two cushion supporting rods, and the cushion supporting rods are used to support the sofa cushion; the armrests are fixed to both sides of the sofa frame, and the armrests provide arm support for the user; the footrest is arranged on the footrest rotating frame, and the footrest rotating frame is used to drive the footrest to rotate.

[0025] By adopting the above technical solution, the sofa frame serves as a stable foundation to support the structure of the entire sofa; the sofa backrest is fixed to two backrest support members through the support part to ensure that the user's back is comfortably supported. The sofa cushion is firmly mounted on two cushion support rods, which effectively disperse and carry the user's weight, bringing a lasting and balanced sitting experience. The armrests are cleverly fixed on both sides of the sofa frame to provide users with intimate arm support, enhancing the convenience and comfort of use. The footrest is set on a rotatable footrest rotating frame, allowing users to easily adjust the angle of the footrest as needed, thereby meeting the needs of a variety of sitting postures from leisure reading to comfortable lying, and improving the versatility and user experience of the sofa.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sofa frame enables the backrest support to rotate freely within the range of 0-180°, meeting the user's various needs from sitting to lying flat. Whether it is daily rest, reading, watching TV, or taking a nap or a short sleep, the user can find the most suitable posture and enjoy the comfort like a bed, which improves the practicality of the sofa; 2. The coordinated work of the base, the driving device and the multiple adjustment and deformation devices forms a close linkage relationship between the footrest rotating frame, the cushion adjustment frame and the backrest rotating frame. This not only optimizes the space utilization efficiency of the sofa, but also enhances the overall stability of the sofa. During the adjustment process, each component can maintain a consistent movement state, avoiding the occurrence of jamming or instability, and ensuring the safety and reliability of the sofa; 3. The application of elastic parts effectively buffers the relative movement between components, reduces operating noise, and also prolongs the life of the mechanical structure. The unique structure of the footrest rotating frame not only facilitates flexible position adjustment, but also ensures that the user's legs have a good stretching space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a sofa frame in an embodiment of the present application.

[0028] Figure 2 yes Figure 1 A partial enlarged view of part A.

[0029] Figure 3 yes Figure 1 A partial enlarged view of part B.

[0030] Figure 4 yes Figure 1 A partial enlarged view of part C.

[0031] Description of reference numerals: 1. base; 11. first fixing rod; 12. support member; 13. second fixing rod; 14. mounting portion; 2. driving device; 21. driving member; 22. linkage arm; 3. cushion support rod; 4. second connecting rod mechanism; 41. linkage plate; 42. first connecting rod assembly; 421. third connecting rod; 422. first linkage rod; 423. fourth connecting rod; 424. second linkage rod; 425. fifth connecting rod; 426. sixth connecting rod; 427. synchronous connecting rod; 43. second connecting rod assembly; 431. third linkage rod; 43 2. Fourth linkage rod; 433. Fifth linkage rod; 5. Footrest rotating frame; 51. First movable rod; 52. Second movable rod; 53. Third movable rod; 54. Fourth movable rod; 55. Fifth movable rod; 56. Triangular connector; 57. Footrest rotating member; 6. Backrest rotating frame; 61. Backrest supporting member; 611. Active portion; 612. Supporting portion; 613. Mounting hole; 62. First linkage mechanism; 621. Mounting rod; 622. First connecting rod; 623. Second connecting rod; 624. Active connector; 7. Elastic member. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings 1-4.

[0033] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be the common meanings understood by those skilled in the art to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components.

[0034] For ease of understanding, in the horizontal direction of this embodiment, the length direction of the support member 12 is defined as the first direction, and the width direction of the first fixing rod 11 is defined as the second direction, and the sofa frame and the sofa including the frame are described based on this.

[0035] The present application embodiment discloses a sofa frame and a sofa including the frame. Figure 1The sofa frame includes a base 1, a driving device 2 and a plurality of adjusting and deforming devices. In the present embodiment, there are two adjusting and deforming devices, both of which are arranged on the base 1, and the adjusting and deforming devices correspond one to one with the supporting member 12. Each adjusting and deforming device includes a seat cushion adjustment frame, a footrest rotating frame 5 and a backrest rotating frame 6, wherein the seat cushion adjustment frame is arranged on the supporting member 12, the footrest rotating frame 5 is arranged at one end of the seat cushion adjustment frame, and the backrest rotating frame 6 is arranged at the other end of the seat cushion adjustment frame. The driving device 2 is arranged on the base 1, and the driving device 2 is used to drive the footrest rotating frame 5 to move, and the footrest rotating frame 5 drives the seat cushion adjustment frame to move when it moves, and the seat cushion adjustment frame drives the backrest rotating frame 6 to move when it moves, thereby realizing synchronous adjustment of the movement of multiple adjusting and deforming devices.

[0036] Reference Figure 1 The base 1 includes a first fixing rod 11 and two supporting members 12. The first fixing rod 11 extends along the second direction. Both ends of the first fixing rod 11 are fixedly connected to the inner side walls of the two supporting members 12, thereby fixing the two supporting blocks together. The two supporting members 12 simultaneously support the sofa frame, thereby increasing the stability of the sofa frame placed on the ground.

[0037] Reference Figure 1 and Figure 2 The seat cushion adjustment frame includes a seat cushion support rod 3 and a second link mechanism 4, and the seat cushion support rod 3 moves relative to the base 1 through the second link mechanism 4. The seat cushion support rod 3 moves relative to the base 1 through the second link mechanism 4, so that the seat position can be flexibly adjusted according to needs. The first link mechanism 62 is connected to the second link mechanism 4 through an elastic member 7, and the footrest rotating frame 5 is arranged on the seat cushion support rod 3. The first link mechanism 62 is connected to the second link mechanism 4 through an elastic member 7, which not only enhances the stability of the sofa structure, but also makes the adjustment process smoother and more natural.

[0038] Reference Figure 2 In this embodiment, the second link mechanism 4 includes a linkage plate 41, a first link assembly 42 and a second link assembly 43. The linkage plate 41 is located between the base 1 and the cushion support rod 3, the linkage plate 41 is movably connected to the base 1 through the first link assembly 42, and the cushion support rod 3 is movably connected to the linkage plate 41 through the second link assembly 43.

[0039] Reference Figure 2The first connecting rod assembly 42 includes a third connecting rod 421, a first linkage rod 422, a fourth connecting rod 423, a second linkage rod 424, a fifth connecting rod 425, and a sixth connecting rod 426. One end of the third connecting rod 421 is rotatably connected to the base 1, one end of the first linkage rod 422 is rotatably connected to the middle of the third connecting rod 421, and the other end of the first linkage rod 422 is rotatably connected to the linkage plate 41. One end of the fourth connecting rod 423 is rotatably connected to the base 1, one end of the second linkage rod 424 is rotatably connected to the middle of the fourth connecting rod 423, and the other end of the second linkage rod 424 is rotatably connected to the linkage plate 41; one end of the fifth connecting rod 425 is rotatably connected to the other end of the fourth connecting rod 423, and the other end of the fifth connecting rod 425 is rotatably connected to the middle of the first linkage rod 422. One end of the sixth connecting rod 426 is rotatably connected to the middle of the fifth connecting rod 425, and the other end of the sixth connecting rod 426 is rotatably connected to the other end of the third connecting rod 421. The third connecting rod 421 and the fourth connecting rod 423 are respectively connected to the base 1 in rotation, serving as the support base of the entire connecting rod assembly. The first linkage rod 422 and the second linkage rod 424 are respectively connected to the middle of the third connecting rod 421 and the fourth connecting rod 423, and are connected in rotation with the linkage plate 41, thereby realizing flexible relative movement between the linkage plate 41 and the base 1. The fifth connecting rod 425 and the sixth connecting rod 426 are connected in rotation, tightly connecting the first linkage rod 422, the fourth connecting rod 423 and the third connecting rod 421 together, forming a closed-loop connecting rod mechanism. This not only enhances the stability of the sofa structure, but also enables the sofa to change its posture more smoothly and naturally during the adjustment process, thereby improving the user experience and the overall performance of the sofa.

[0040] Reference Figure 1 and Figure 2 The first connecting rod assembly 42 also includes a synchronous connecting rod 427, and the third connecting rods 421 on both sides are fixedly connected. By adding a synchronous connecting rod 427 and fixing the third connecting rods 421, the synchronous movement between the two first connecting rod assemblies 42 is achieved. Not only does it enhance the stability and coordination of the entire connecting rod system, but it also ensures that the various parts of the sofa can maintain a consistent movement state during the adjustment process, avoiding the jamming or instability caused by the asynchronous movement of the parts.

[0041] Reference Figure 2The second link assembly 43 includes a third link rod 431, a fourth link rod 432 and a fifth link rod 433, wherein one end of the third link rod 431 is rotatably connected to the link plate 41, and the other end of the third link rod 431 is rotatably connected to the cushion support rod 3; one end of the fourth link rod 432 is rotatably connected to the link plate 41, and the other end of the fourth link rod 432 is rotatably connected to the cushion support rod 3; one end of the fifth link rod 433 is rotatably connected to the link plate 41, and the other end of the fifth link rod 433 is rotatably connected to the cushion support rod 3; the fifth link rod 433 and the fourth link rod 432 cross each other but do not contact each other. Not only does it realize the flexible relative movement between the cushion support rod 3 and the link plate 41, but also through the coordinated work of the three link rods, the stability and bearing capacity of the sofa structure are enhanced. The fifth link rod 433 and the fourth link rod 432 cross each other but do not contact each other, which not only ensures the compactness of the link assembly, but also avoids interference during the movement.

[0042] The backrest rotating frame 6 includes a backrest supporting member 61 and a first connecting rod mechanism 62, one end of the first connecting rod mechanism 62 is rotatably connected to one end of the cushion adjustment frame. One end of the elastic member 7 is rotatably connected to the first connecting rod assembly 42, and the other end of the elastic member 7 is rotatably connected to the first connecting rod mechanism 62. In this embodiment, the specific elastic member 7 is a tension spring. One end of the elastic member 7 is rotatably connected to the first connecting rod assembly 42, and the other end is rotatably connected to the backrest rotating frame 6, which not only provides good cushioning and support for the sofa, but also enables the sofa to change posture more smoothly and stably during the adjustment process.

[0043] Reference Figure 1 and Figure 3 The base 1 also includes a second fixed rod 13, which extends along the second direction. The two ends of the second fixed rod 13 are respectively fixedly connected to the inner side walls of the two support members 12, and the other end of the first connecting rod mechanism 62 is rotatably connected to the second fixed rod 13. One end of the footrest rotating frame 5 is movably connected to the other end of the seat cushion supporting rod 3. The driving device 2 is arranged on the base 1, and the driving device 2 is used to drive multiple footrest rotating frames 5 to move at the same time. When the footrest rotating frame 5 moves, it drives the seat cushion adjusting frame to move synchronously. When the seat cushion adjusting frame moves, it drives the first connecting rod mechanism 62 to move. When the first connecting rod mechanism 62 moves, it drives the backrest supporting member 61 to rotate. The rotation angle range of the backrest supporting member 61 is 0-180°.

[0044] Reference Figure 3In this embodiment, the backrest supporting member 61 includes a movable portion 611 and a supporting portion 612, and one end of the supporting portion 612 is fixedly connected to the middle of the movable portion 611. The first link mechanism 62 includes a mounting rod 621, a first connecting rod 622, a second connecting rod 623 and a movable connecting member 624. The mounting rod 621 is fixed, one end of the first connecting rod 622 is rotatably connected to the middle of the mounting rod 621, and the other end of the first connecting rod 622 is rotatably connected to one end of the movable portion 611. The movable connecting member 624 is V-shaped, and the movable connecting member 624 is rotatably connected to one end of the mounting rod 621 away from the cushion supporting rod 3 through a corner point, and one end of the movable connecting member 624 is rotatably connected to the other end of the movable portion 611. Two mounting portions 14 are fixedly provided on one side of the second fixed rod 13 close to the cushion adjustment frame, and the mounting portions 14 correspond one to one to the second connecting rod 623. One end of the second connecting rod 623 is rotatably connected to the mounting portion 14, and the other end of the second connecting rod 623 is rotatably connected to the other end of the movable connecting member 624. The supporting portion 612 is used to mount the backrest of the sofa. The supporting portion 612 is provided with a plurality of mounting holes 613 for mounting and fixing the sofa backrest. The rotation angle range of the supporting portion 612 is 0-180°.

[0045] Continue to refer to Figure 3 The backrest supporting member 61 is divided into a movable part 611 and a supporting part 612. One end of the supporting part 612 is fixedly connected to the middle of the movable part 611, providing a stable support for the installation of the backrest. When the driving device 2 is started, the movement of the cushion adjustment frame drives the installation rod 621 to move, and then the movable part 611 is driven to rotate through the first connecting rod 622. At the same time, the V-shaped movable connecting member 624 uses its corner point as a fulcrum, one end rotates with the movable part 611, and the other end is connected to the base 1 through the second connecting rod 623, so as to realize the stable forward or backward tilting of the backrest supporting member 61. The supporting part 612, as the mounting part 14 of the backrest, can rotate freely within the range of 0-180°, meeting the various needs of users from sitting to lying, and improving the comfort and practicality of the sofa.

[0046] Reference Figure 1 and Figure 4The footrest rotating frame 5 includes a first movable rod 51, a second movable rod 52, a third movable rod 53, a fourth movable rod 54, a fifth movable rod 55, a triangular connecting member 56 and a footrest rotating member 57; one end of the first movable rod 51 is rotatably connected to the cushion supporting rod 3, one end of the second movable rod 52 is rotatably connected to the cushion supporting rod 3, the second movable rod 52 and the fourth movable rod 54 are mutually crossed and rotatably connected, one end of the third movable rod 53 is rotatably connected to the other end of the second movable rod 52, and the other end of the third movable rod 53 is rotatably connected to the triangular connecting member 56; one end of the fourth movable rod 54 is rotatably connected to the other end of the first movable rod 51, and the other end of the fourth movable rod 54 is rotatably connected to the triangular connecting member 56. One end of the footrest rotating member 57 is rotatably connected to the triangular connecting member 56, one end of the fifth movable rod 55 is rotatably connected to the middle part of the footrest rotating member 57, and the other end of the fifth movable rod 55 is rotatably connected to the triangular connecting member 56.

[0047] The first movable rod 51 and the second movable rod 52 are rotatably connected to the seat support rod 3 respectively, providing a stable support base for the footrest rotating frame 5. The third movable rod 53 crosses and is rotatably connected to the first movable rod 51, and at the same time forms a rotation relationship with the other end of the second movable rod 52 and the triangular connector 56, realizing the preliminary rotation function of the footrest part. The fourth movable rod 54 further connects the other end of the first movable rod 51 and the triangular connector 56, enhancing the stability of the structure. The footrest rotating member 57 is cleverly connected to the triangular connector 56 and the fifth movable rod 55, realizing smooth rotation under the action of the driving device 2. Not only does it enable the footrest to be flexibly adjusted according to the needs of the user, but it also ensures the stability and smoothness of the sofa during the adjustment process, improving the user experience and the versatility of the sofa.

[0048] The driving device 2 includes a driving member 21 and a linkage arm 22. The linkage arm 22 is fixedly connected to a plurality of first movable rods 51. The driving member 21 is arranged on the base 1, and the driving member 21 is used to drive the linkage arm 22 to move. The driving member 21 is firmly arranged on the base 1, and serves as a power source for the entire driving system. When the driving member 21 is started, it drives the plurality of first movable rods 51 to move through the linkage arm 22, and then drives the cushion adjustment frame, the footrest rotating frame 5, the backrest rotating frame 6 and other parts of the sofa to achieve synchronous movement. In this embodiment, the specific driving member 21 can be a cylinder or an electric push rod, a motor with a transmission mechanism (such as a gear set, a screw nut pair, etc.), a hydraulic cylinder, or other devices that can provide linear or rotational power. The specific driving member 21 is arranged on the second fixed rod 13, and the driving member 21 can be rotatably connected to the second fixed rod 13. These driving members 21 convert energy forms (such as electrical energy, air pressure, hydraulic energy) into mechanical energy to drive the linkage arm 22 to perform the required movement, thereby realizing precise control and synchronous adjustment of various parts of the sofa such as the seat cushion adjustment frame, the footrest rotating frame 5, and the backrest rotating frame 6.

[0049] The implementation principle of the above embodiment is: when the sofa is in a resting state, the driving device 2 drives the footrest rotating frame 5 to be rolled up to the bottom of the cushion adjustment frame, the cushion supporting rod 3 remains horizontal, and the backrest supporting member 61 rotates to a tilted state to provide a comfortable sitting posture for the user.

[0050] When the sofa needs to be adjusted to a lying state (second state), the driving device 2 is started, and the footrest rotating frame 5 is driven to unfold through the linkage arm 22. This process is divided into two stages: Phase 1: The footrest rotating frame 5 begins to unfold, and the seat cushion adjustment frame and the backrest rotating frame 6 remain substantially stationary.

[0051] Stage 2: The footrest rotating frame 5 continues to unfold, and at the same time drives the cushion supporting rod 3 to move in the horizontal direction. The movement of the cushion supporting rod 3 further drives the backrest supporting member 61 to rotate through the connecting rod mechanism until the supporting portion 612 of the backrest supporting member 61 rotates to a horizontal state, forming a flat bed surface.

[0052] When it is necessary to adjust from the lying state to the resting state, the driving device 2 operates in the reverse direction, and the linkage arm 22 drives the footrest rotating frame 5 to retract. At the same time, the movement of the footrest rotating frame 5 drives the seat cushion supporting rod 3 and the backrest supporting member 61 to move in the opposite direction through the connecting rod mechanism, and the supporting portion 612 of the backrest supporting member 61 rotates from the horizontal state to the inclined state. Finally, the footrest rotating frame 5 is completely retracted under the seat cushion adjustment frame, and the sofa returns to the resting state.

[0053] During the entire adjustment process, the power source provided by the drive device 2, such as a cylinder, an electric push rod or a motor in conjunction with a transmission mechanism, ensures that all parts of the sofa can be accurately controlled and synchronously adjusted, meeting the user's various needs from sitting to lying, and improving the comfort and practicality of the sofa.

[0054] Example 2 This embodiment discloses a sofa, comprising the sofa frame described in Embodiment 1, and also comprising a sofa backrest, a sofa cushion, a footrest and two armrests.

[0055] Reference Figure 1 and Figure 3 , wherein the sofa backrest is fixed to two backrest supporting members 61 through a plurality of mounting holes 613 on the supporting portion 612. These mounting holes 613 and the backrest supporting members 61 ensure the stability and adjustability of the sofa backrest, so that the user can adjust the inclination angle of the backrest according to personal preference.

[0056] The sofa cushion is fixed on two cushion support rods 3 at the same time. The cushion support rod 3 not only provides sufficient support, but also ensures the flatness and comfort of the cushion, bringing a good sitting experience to the user.

[0057] Sofa armrests are fixed on both sides of the sofa frame, usually between the sofa back and the sofa cushion. The armrests not only increase the overall aesthetics of the sofa, but also provide arm support for the user, making the sitting posture more natural and comfortable. The armrests may also be cushioned or decorated to enhance their touch and visual effects.

[0058] The footrest is fixed on two footrest rotating frames 5. These footrest rotating frames 5 allow the footrest to rotate and adjust within a certain range to meet the needs of users in different sitting postures. When resting or relaxing is needed, the user can unfold the footrest and place both feet on it to enjoy a more comfortable sitting experience.

[0059] 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 frame, characterized in that: The invention comprises a base (1), a driving device (2) and a plurality of adjusting and deforming devices, wherein the plurality of adjusting and deforming devices are arranged on the base (1), and each of the adjusting and deforming devices comprises a seat cushion adjusting frame, a foot support rotating frame (5) and a backrest rotating frame (6); the seat cushion adjusting frame is movably connected to the base (1); the backrest rotating frame (6) comprises a backrest supporting member (61) and a first connecting rod mechanism (62), one end of the first connecting rod mechanism (62) is rotatably connected to one end of the seat cushion adjusting frame, and the other end of the first connecting rod mechanism (62) is rotatably connected to the base (1). ; One end of the footrest rotating frame (5) is movably connected to the other end of the seat cushion adjusting frame, and the driving device (2) is arranged on the base (1), and the driving device (2) is used to drive multiple footrest rotating frames (5) to move simultaneously; when the footrest rotating frame (5) moves, it drives the seat cushion adjusting frame to move synchronously, and when the seat cushion adjusting frame moves, it drives the first connecting rod mechanism (62) to move, and when the first connecting rod mechanism (62) moves, it drives the backrest supporting member (61) to rotate, and the rotation angle range of the backrest supporting member (61) is 0-180°.

2. A sofa frame according to claim 1, characterized in that: The backrest supporting member (61) comprises a movable portion (611) and a supporting portion (612), one end of the supporting portion (612) being fixedly connected to the middle portion of the movable portion (611); the first connecting rod mechanism (62) comprises a mounting rod (621), a first connecting rod (622), a second connecting rod (623) and a movable connecting member (624); the mounting rod (621) is arranged on the seat cushion adjustment frame, one end of the first connecting rod (622) is rotatably connected to the middle portion of the mounting rod (621), and the other end of the first connecting rod (622) is rotatably connected to one end of the movable portion (611). The movable connection (624) is rotatably connected to the end of the mounting rod (621) through the corner point, and one end of the movable connection (624) is rotatably connected to the other end of the movable part (611); one end of the second connecting rod (623) is rotatably connected to the base (1), and the other end of the second connecting rod (623) is rotatably connected to the other end of the movable connection (624); the supporting part (612) is used to install the backrest of the sofa, and the rotation angle range of the supporting part (612) is 0-180°.

3. A sofa frame according to claim 1, characterized in that: The seat cushion adjustment frame comprises a seat cushion support rod (3) and a second connecting rod mechanism (4); the seat cushion support rod (3) moves relative to the base (1) through the second connecting rod mechanism (4); the first connecting rod mechanism (62) and the second connecting rod mechanism (4) are connected via an elastic member (7); and the footrest rotating frame (5) is arranged on the seat cushion support rod (3).

4. A sofa frame according to claim 3, characterized in that: The second connecting rod mechanism (4) comprises a linkage plate (41), a first connecting rod assembly (42) and a second connecting rod assembly (43); the linkage plate (41) is located between the base (1) and the seat cushion supporting rod (3); the linkage plate (41) is movably connected to the base (1) via the first connecting rod assembly (42); the seat cushion supporting rod (3) is movably connected to the linkage plate (41) via the second connecting rod assembly (43); one end of the elastic member (7) is rotatably connected to the first connecting rod assembly (42), and the other end of the elastic member (7) is rotatably connected to the second connecting rod assembly (43).

5. A sofa frame according to claim 4, characterized in that: The first connecting rod assembly (42) comprises a third connecting rod (421), a first linkage rod (422), a fourth connecting rod (423), a second linkage rod (424), a fifth connecting rod (425), and a sixth connecting rod (426); one end of the third connecting rod (421) is rotatably connected to the base (1), one end of the first linkage rod (422) is rotatably connected to the middle part of the third connecting rod (421), and the other end of the first linkage rod (422) is rotatably connected to the linkage plate (41); one end of the fourth connecting rod (423) is rotatably connected to the base (1), and the second linkage rod (424) is rotatably connected to the linkage plate (41). One end of the rod (424) is rotationally connected to the middle part of the fourth connecting rod (423), and the other end of the second connecting rod (424) is rotationally connected to the linkage plate (41); one end of the fifth connecting rod (425) is rotationally connected to the other end of the fourth connecting rod (423), and the other end of the fifth connecting rod (425) is rotationally connected to the middle part of the first linkage rod (422); one end of the sixth connecting rod (426) is rotationally connected to the middle part of the fifth connecting rod (425), and the other end of the sixth connecting rod (426) is rotationally connected to the other end of the third connecting rod (421).

6. A sofa frame according to claim 5, characterized in that: The first connecting rod assembly (42) further comprises a synchronous connecting rod (427), wherein the synchronous connecting rod (427) is fixedly connected to the plurality of third connecting rods (421).

7. A sofa frame according to claim 4, characterized in that: The second link assembly (43) comprises a third linkage rod (431), a fourth linkage rod (432) and a fifth linkage rod (433); one end of the third linkage rod (431) is rotationally connected to the linkage plate (41), and the other end of the third linkage rod (431) is rotationally connected to the seat cushion supporting rod (3); one end of the fourth linkage rod (432) is rotationally connected to the linkage plate (41), and the other end of the fourth linkage rod (432) is rotationally connected to the seat cushion supporting rod (3); one end of the fifth linkage rod (433) is rotationally connected to the linkage plate (41), and the other end of the fifth linkage rod (433) is rotationally connected to the seat cushion supporting rod (3); the fifth linkage rod (433) and the fourth linkage rod (432) intersect with each other but do not contact each other.

8. The sofa frame according to claim 3, characterized in that: The footrest rotating frame (5) comprises a first movable rod (51), a second movable rod (52), a third movable rod (53), a fourth movable rod (54), a fifth movable rod (55), a triangular connecting member (56) and a footrest rotating member (57); one end of the first movable rod (51) is rotatably connected to the seat cushion supporting rod (3), and one end of the second movable rod (52) is rotatably connected to the seat cushion supporting rod (3); the second movable rod (52) and the fourth movable rod (54) are intersected and rotatably connected to each other, and one end of the third movable rod (53) is rotatably connected to the other end of the second movable rod (52). One end of the third movable rod (53) is rotatably connected, and the other end of the third movable rod (53) is rotatably connected to the triangular connecting piece (56); one end of the fourth movable rod (54) is rotatably connected to the other end of the first movable rod (51), and the other end of the fourth movable rod (54) is rotatably connected to the triangular connecting piece (56); one end of the footrest rotating piece (57) is rotatably connected to the triangular connecting piece (56), one end of the fifth movable rod (55) is rotatably connected to the middle part of the footrest rotating piece (57), and the other end of the fifth movable rod (55) is rotatably connected to the triangular connecting piece (56).

9. A sofa frame according to claim 8, characterized in that: The driving device (2) comprises a driving member (21) and a linkage arm (22); the linkage arm (22) is fixedly connected to a plurality of the second movable rods (52); the driving member (21) is arranged on the base (1); and the driving member (21) is used to drive the linkage arm (22) to move.

10. A sofa, characterized in that: It comprises a sofa frame as described in any one of claims 1 to 9, and also comprises a sofa frame, a sofa backrest, a sofa cushion, a footrest and an armrest; the sofa backrest is fixed to two backrest supporting members (61) through a supporting portion (612); the sofa cushion is fixed to two cushion supporting rods (3), and the cushion supporting rods (3) are used to support the sofa cushion; the armrest is fixed to both sides of the sofa frame, and the armrest provides arm support for the user; the footrest is arranged on the footrest rotating frame (5), and the footrest rotating frame (5) is used to drive the footrest to rotate.

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