Zero-wall-leaning movable seat frame and seat

Abstract

The utility model discloses a wall-leaning-free movable seat frame and a seat. The zero-wall-leaning movable seat frame comprises a linkage assembly, the linkage assembly comprises a linkage frame and a rotating frame, and the rotating frame is hinged to the front end of the linkage frame. The backrest assembly is hinged to the rear end of the linkage frame; the front end of the rotating frame and the linkage frame are hinged to the leg assembly; the driving assembly is connected with the rotating frame and used for driving the rotating frame to rotate or pulling the linkage frame to move forwards or backwards, so that the movable seat frame is switched among the sitting posture state, the TV posture state and the lying posture state; when the movable seat frame is switched from the sitting posture state to the TV posture state, the leg assembly stretches forwards, and meanwhile the backrest assembly rotates to the inclined position and moves forwards. When the movable seat frame is switched from the TV posture state to the lying posture state, the backrest assembly rotates to the lying position and moves forwards. According to the utility model, the backrest assembly can move forwards when the seat is switched, so that zero wall leaning is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a movable seat frame and a chair with zero wall support. Background Art

[0002] With the improvement of people's living standards, multifunctional sofas or chairs have become widely used furniture in home life, wherein the multifunctional sofas or chairs can usually be adjusted to a sitting position in a normal sitting position, a TV position with only legs extended, and a lying position with legs and back fully extended.

[0003] In existing products, when the seat is switched to a lying position, the seat backrest is generally flipped down directly to provide the user with enough space to stretch the back. If the seat backrest is placed against the wall, the backrest will touch the adjacent wall when the seat is switched to a lying position, causing interference with the rotation of the backrest. If the seat is not completely against the wall, the indoor space utilization rate will be low. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a movable seat frame with zero wall leaning, which can achieve zero wall leaning when the seat switches states.

[0005] According to an embodiment of the utility model, a zero-wall movable seat frame includes: a linkage assembly, the linkage assembly includes a linkage frame and a rotating frame, the rotating frame is hinged to the front end of the linkage frame; a backrest assembly, the backrest assembly is hinged to the rear end of the linkage frame; a leg assembly, the front end of the rotating frame and the linkage frame are both hinged to the leg assembly; a driving assembly, the driving assembly is connected to the rotating frame, and is used to drive the rotating frame to rotate or pull the linkage frame to move forward or backward, so that the movable seat frame can switch between a sitting position, a TV position and a lying position; when the movable seat frame switches from a sitting position to a TV position, the leg assembly extends forward, and at the same time the backrest assembly rotates to a tilted position and moves forward; when the movable seat frame switches from a TV position to a lying position, the backrest assembly rotates to a lying position and moves forward.

[0006] In this zero-wall-leaning movable seat frame, the driving component drives the rotating frame to rotate upward, and the driving rotating frame drives the leg assembly to extend forward, so that the movable seat frame switches from a sitting position to a TV position. When the movable seat frame switches from a TV position to a lying position, the driving component pulls the linkage frame forward through the rotating frame, so that the linkage frame can drive the backrest assembly to move forward and flip, thereby achieving zero wall leaning.

[0007] According to some embodiments of the utility model, the leg assembly includes a leg assembly frame, a first leg link, a second leg link, a third leg link, a fourth leg link and a fifth leg link, the first leg link is hinged between the rear end of the leg assembly frame and a rotating frame, the second leg link is hinged between the linkage frame and the rear end of the third leg link, the third leg link is hinged to the rotating frame, the fourth leg link is hinged between the front end of the third leg link and the rear end of the fifth leg link, and the front end of the fifth leg link is hinged to the front end of the leg assembly frame.

[0008] According to some embodiments of the utility model, it also includes a first positioning pin, which is fixedly connected to the rotating frame; when the movable seat frame switches from the TV state to the lying state, the third leg connecting rod is engaged with the first positioning pin.

[0009] According to some embodiments of the utility model, an extension component is also included, which includes an extension frame and an extension connecting rod, the rear end of the extension connecting rod is hinged to the front end of the fifth leg connecting rod, the front end of the extension connecting rod is hinged to the extension frame, and the rear end of the extension frame is hinged to the front end of the leg assembly frame.

[0010] According to some embodiments of the utility model, a base is further included, and the lower end of the linkage frame is indirectly hinged to the base.

[0011] According to some embodiments of the utility model, the linkage assembly also includes a front base frame, a rear base frame, a first linkage rod, a second linkage rod, a third linkage rod, a fourth linkage rod, a fifth linkage rod and a sixth linkage rod, the first linkage rod is hinged between the lower end of the second linkage rod and the second leg link, the second linkage rod is hinged to the linkage frame, the third linkage rod is hinged between the upper end of the second linkage rod and the front base frame, the lower end of the front base frame is hinged to the front end of the base, the upper end of the front base frame is hinged to the front end of the fourth linkage rod, the rear end of the fourth linkage rod is hinged to the linkage frame, the fifth linkage rod is hinged between the fourth linkage rod and the sixth linkage rod, the sixth linkage rod is hinged to the rear base frame, and the rear base frame is hinged to the rear end of the base.

[0012] According to some embodiments of the utility model, the fourth linkage rod is fixedly connected to a second limit pin, and the first linkage rod is provided with a limit position corresponding to the second limit pin; when the movable seat frame is in a lying state, the second limit pin is engaged with the limit position.

[0013] According to some embodiments of the utility model, the backrest assembly includes a backrest mounting frame, a first backrest link, a second backrest link and a third backrest link, the upper end of the first backrest link is hinged to the upper end of the backrest mounting frame, the second backrest link is hinged to the backrest mounting frame, and the first backrest link is located behind the second backrest link, the front end of the third backrest link is hinged to the rear end of the linkage frame, the rear end of the third backrest link is hinged to the first backrest link, the lower end of the first backrest link is indirectly hinged to the linkage frame, and the lower end of the second backrest link is hinged to the third backrest link.

[0014] According to some embodiments of the utility model, the backrest mounting frame is provided with a third limit pin, and the second backrest connecting rod is provided with a backrest clamping position corresponding to the third limit pin; when the movable seat frame switches from the TV posture state to the lying posture state, the third limit pin is clamped with the backrest clamping position.

[0015] According to the same inventive concept, the utility model also provides a chair, comprising the above-mentioned zero-wall movable seat frame.

[0016] In summary, the zero-wall movable seat frame provided by the utility model has the following technical effects:

[0017] The driving component drives the rotating frame to rotate upward, and the driving rotating frame drives the leg assembly to extend forward, and at the same time drives the backrest assembly to rotate to an inclined position and move forward through the linkage frame, so that the movable seat frame switches from a sitting position to a TV position; when the movable seat frame switches from a TV position to a lying position, the driving component pulls the linkage frame forward through the rotating frame, so that the linkage frame can drive the backrest assembly to rotate to a lying position and move forward, thereby achieving zero leaning against the wall of the backrest assembly when the seat is switched. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the movable seat frame of the embodiment of the utility model in a sitting position;

[0019] Figure 2 It is another structural schematic diagram of the movable seat frame of the embodiment of the utility model in a sitting position;

[0020] Figure 3 It is another structural schematic diagram of the movable seat frame of the embodiment of the utility model in a sitting position;

[0021] Figure 4 This is a structural schematic diagram of the movable seat frame of the embodiment of the utility model in a TV posture state;

[0022] Figure 5 It is another structural schematic diagram of the movable seat frame of the embodiment of the utility model in the TV posture state;

[0023] Figure 6 It is another structural schematic diagram of the movable seat frame of the embodiment of the utility model in the TV posture state;

[0024] Figure 7 This is a structural schematic diagram of the movable seat frame of the embodiment of the utility model in a lying state;

[0025] Figure 8 It is another structural schematic diagram of the movable seat frame of the embodiment of the utility model in a lying state;

[0026] Fig. 9 This is another structural schematic diagram of the movable seat frame of the embodiment of the utility model in a lying state.

[0027] The meanings of the reference numerals are as follows:

[0028] 1. linkage assembly; 11. linkage frame; 12. rotating frame; 121. first positioning pin; 13. front chassis; 14. rear chassis; 15A. first linkage rod; 15B. second linkage rod; 15C. third linkage rod; 15D. fourth linkage rod; 15E. fifth linkage rod; 15F. sixth linkage rod; 16. second limit pin; 17. limit position; 2. backrest assembly; 21. backrest mounting frame; 211. first Three limit pins; 22, first backrest connecting rod; 23, second backrest connecting rod; 231, backrest locking rod; 24, third backrest connecting rod; 3, leg assembly; 31, leg assembly frame; 32, first leg connecting rod; 33, second leg connecting rod; 34, third leg connecting rod; 35, fourth leg connecting rod; 36, fifth leg connecting rod; 4, driving assembly; 5, extension assembly; 51, extension frame; 52, extension connecting rod; 6, base. DETAILED DESCRIPTION

[0029] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] See also Figure 1 , Figure 4 and Figure 7 A zero-wall movable seat frame is applied to a seat. Specifically, the zero-wall movable seat frame constitutes a main frame of the seat, and the state switching of the zero-wall movable seat frame corresponds to the state switching of the seat. For the convenience of description, the zero-wall movable seat frame is collectively referred to as the movable seat frame hereinafter.

[0033] See also Figure 1 , Figure 4 and Figure 7 The utility model discloses a zero-wall movable seat frame. The zero-wall movable seat frame comprises a linkage assembly 1, a backrest assembly 2, a leg assembly 3 and a driving assembly 4. In some embodiments, the linkage assembly 1 comprises a linkage frame 11 and a rotating frame 12, the rotating frame 12 is hinged to the front end of the linkage frame 11; the backrest assembly 2 is hinged to the rear end of the linkage frame 11; the front end of the rotating frame 12 and the linkage frame 11 are both hinged to the leg assembly 3; the driving assembly 4 is connected to the rotating frame 12, and is used to drive the rotating frame 12 to rotate or pull the linkage frame 11 to move forward or backward, so that the movable seat frame can switch between a sitting position, a TV position and a lying position. Preferably, the driving component 4 drives the rotating frame 12 to rotate upward, and the driving rotating frame 12 drives the leg assembly 3 to extend forward, and at the same time drives the backrest assembly 2 to rotate to an inclined position and move forward through the linkage frame 11, so that the movable seat frame switches from a sitting position to a TV position. When the movable seat frame switches from a TV position to a lying position, the driving component 4 pulls the linkage frame 11 forward through the rotating frame 12, so that the linkage frame 11 can drive the backrest assembly 2 to rotate to a lying position and move forward, thereby achieving zero leaning against the wall of the backrest assembly when the seat is switched.

[0034] Specifically, when the movable seat frame switches from the sitting position to the TV position, the rotating frame 12 rotates upward to drive the leg assembly 3 to extend forward, provide support for the user's legs, and facilitate the user to stretch his legs. At the same time, the linkage frame 11 drives the backrest assembly 2 to rotate to the inclined position and move forward; when the movable seat frame switches from the TV position to the lying position, the linkage frame 11 drives the backrest assembly 2 to rotate to the lying position and move forward to achieve zero wall contact, effectively solving the problem that the backrest will touch the wall adjacent to it when the seat switches. Similarly, when the movable seat frame switches from the lying position to the TV position, the linkage frame 11 drives the backrest assembly 2 to move backward and rotate in the opposite direction to the inclined position; when the movable seat frame switches from the TV position to the sitting position, the linkage frame 11 continues to drive the backrest assembly 2 to move backward and rotate in the opposite direction to reset, and at the same time, the leg assembly 3 rotates downward following the rotating frame 12, and at the same time, the leg assembly 3 is folded under the leg assembly 3.

[0035] See also Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 In some embodiments, the leg assembly 3 includes a leg assembly frame 31, a first leg link 32, a second leg link 33, a third leg link 34, a fourth leg link 35 and a fifth leg link 36, the first leg link 32 is hinged between the rear end of the leg assembly frame 31 and the rotating frame 12, the second leg link 33 is hinged between the linkage frame 11 and the rear end of the third leg link 34, the third leg link 34 is hinged to the rotating frame 12, the fourth leg link 35 is hinged between the front end of the third leg link 34 and the rear end of the fifth leg link 36, and the front end of the fifth leg link 36 is hinged to the front end of the leg assembly frame 31. Furthermore, the extension assembly 5 is included, and the extension assembly 5 includes an extension frame 51 and an extension link 52, the rear end of the extension link 52 is hinged to the front end of the fifth leg link 36, the front end of the extension link 52 is hinged to the extension frame 51, and the rear end of the extension frame 51 is hinged to the front end of the leg assembly frame 31. Figure 2 and Figure 3 Optionally, when the movable seat frame is in a sitting position, the leg assembly 3 is folded under the leg assembly 3, see Figure 2 , Figure 3 , Figure 5 and Figure 6When the movable seat frame switches from the sitting position to the TV position, the rotating frame 12, driven by the driving assembly 4, rotates upward around the hinge point with the linkage frame 11, and at the same time drives the first leg link 32 and the leg assembly frame 31 to extend forward, and the rotating frame 12 drives the second leg link 33 to rotate upward through the third leg link 34, so that the front end of the third leg link 34 rotates downward while extending forward around the hinge point between itself and the rotating frame 12, and the fourth leg link 35, driven by the third leg link 34, drives the fifth leg link 36 to rotate upward, thereby driving the extension frame 51 and the leg assembly frame 31 to rotate upward to a straight state, so that the leg assembly 3 can be combined with the extension assembly 5 to extend the support distance of the leg.

[0036] See also Figure 6 and Fig. 9 , further, it also includes a first positioning pin 121, and the first positioning pin 121 is fixedly connected to the rotating frame 12; when the movable seat frame switches from the sitting posture state to the TV posture state, the third leg connecting rod 34 is engaged with the first positioning pin 121. Specifically, when the rotating frame 12 rotates upward, the rotating frame 12 drives the second leg connecting rod 33 to rotate upward through the third leg connecting rod 34, so that the front end of the third leg connecting rod 34 rotates downward around the hinge point between itself and the rotating frame 12. Optionally, the hinge point between the third leg connecting rod 34 and the rotating frame 12 is located in the middle of the third leg connecting rod 34. When the front end part of the third leg rotates downward around the hinge point, the rear end part of the third leg connecting rod 34 rotates upward around the hinge point and is engaged with the first positioning pin 121, thereby limiting the rotation of the third leg connecting rod 34, and preventing the front end of the extension frame 51 and the leg assembly frame 31 from tilting upward, affecting the user's experience.

[0037] In some embodiments, a base 6 is further included, and the lower end of the linkage frame 11 is indirectly hinged to the base 6. That is, one or more parts are hinged between the lower end of the linkage frame 11 and the base 6. Optionally, armrest assembly frames are provided on both sides of the base 6. Optionally, the movable seat frame is abutted against the ground through the base 6. Further, a cushion block is provided at the lower end of the base 6.

[0038] See also Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9In some embodiments, the linkage assembly 1 further includes a front chassis 13, a rear chassis 14, a first linkage rod 15A, a second linkage rod 15B, a third linkage rod 15C, a fourth linkage rod 15D, a fifth linkage rod 15E and a sixth linkage rod 15F, wherein the first linkage rod 15A is hinged between the lower end of the second linkage rod 15B and the second leg link 33, the second linkage rod 15B is hinged to the linkage frame 11, the third linkage rod 15C is hinged between the upper end of the second linkage rod 15B and the front chassis 13, the lower end of the front chassis 13 is hinged to the front end of the base 6, the upper end of the front chassis 13 is hinged to the front end of the fourth linkage rod 15D, the rear end of the fourth linkage rod 15D is hinged to the linkage frame 11, the fifth linkage rod 15E is hinged between the fourth linkage rod 15D and the sixth linkage rod 15F, the sixth linkage rod 15F is hinged to the rear chassis 14, and the rear chassis 14 is hinged to the rear end of the base 6. Figure 5 , Figure 6 , Figure 8 and Fig. 9 Optionally, when the movable seat frame switches from the TV state to the lying state, the driving assembly 4 pulls the linkage frame 11 forward through the rotating frame 12, driving the second linkage rod 15B and the sixth linkage rod 15F to move forward, and at the same time drives the rear end of the third linkage rod 15C to rotate upward, and the front end of the rear base frame 14 rotates forward to rotate the sixth linkage rod 15F, and synchronously drives the rear end of the fourth linkage rod 15D to rotate upward through the fifth linkage rod 15E, thereby achieving the lifting of the linkage frame 11 and the leg assembly 3 while driving the linkage frame 11 to move forward.

[0039] See also Figure 5 and Figure 8 Furthermore, the fourth linkage rod 15D is fixedly connected with the second limit pin 16, and the first linkage rod 15A is provided with a limit position 17 corresponding to the second limit pin 16; when the movable seat frame is in the lying state, the second limit pin 16 is engaged with the limit position 17. Specifically, when the movable seat frame is switched from the TV state to the lying state, the rear end of the fourth linkage rod 15D is driven by the fifth linkage rod 15E to rotate upward to lift the position of the linkage frame 11, and at the same time, the second limit pin 16 is engaged with the limit position 17 to limit the rotation range of the fourth linkage rod 15D, so that the linkage frame 11 stays at the highest point.

[0040] See also Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9In some embodiments, the backrest assembly 2 includes a backrest mounting frame 21, a first backrest link 22, a second backrest link 23 and a third backrest link 24, the upper end of the first backrest link 22 is hinged to the upper end of the backrest mounting frame 21, the second backrest link 23 is hinged to the backrest mounting frame 21, and the first backrest link 22 is located behind the second backrest link 23, the front end of the third backrest link 24 is hinged to the rear end of the linkage frame 11, the rear end of the third backrest link 24 is hinged to the first backrest link 22, the lower end of the first backrest link 22 is indirectly hinged to the linkage frame 11, and the lower end of the second backrest link 23 is hinged to the third backrest link 24. Figure 5 , Figure 6 , Figure 8 and Fig. 9 Preferably, the lower end of the first backrest link 22 is hinged to the sixth linkage rod 15F. Optionally, when the movable seat frame switches from a sitting state to a TV state or a lying state, the entire backrest assembly 2 moves forward under the traction of the linkage assembly 1. At the same time, the first backrest link 22 is driven by the sixth linkage rod 15F to drive the backrest mounting frame 21 to rotate upward around the hinge point between itself and the second backrest link 23, so that the backrest mounting frame 21 rotates to a tilted position or a lying position while moving forward, thereby achieving zero leaning against the wall of the backrest assembly when the seat is switched.

[0041] See also Figure 6 and Fig. 9 Further, the backrest mounting frame 21 is provided with a third limiting pin 211, and the second backrest connecting rod 23 is provided with a backrest clamping position 231 corresponding to the third limiting pin 211; when the movable seat frame switches from the TV posture state to the lying posture state, the third limiting pin 211 is clamped with the backrest clamping position 231. Specifically, when the movable seat frame switches from the TV state to the lying posture state, the first backrest connecting rod 22 drives the backrest mounting frame 21 to rotate, and at the same time, the third limiting pin 211 rotates with the backrest mounting frame 21 to the second backrest clamping position 231, so that the backrest mounting frame 21 is in a lying position, and at the same time, the maximum rotation angle of the backrest assembly 2 is limited to prevent the backrest from tilting upward.

[0042] In some embodiments, a chair includes a movable seat frame with zero wall support as described above. Optionally, in order to improve the structural strength and stability of the telescopic seat frame, two linkage frames 11 are hinged on the base 6, and the two linkage frames 11 are parallel to each other. Accordingly, two rotating frames 12, backrest components 2 and leg components 3 are each provided. Preferably, the driving component 4 includes a motor and a telescopic rod, and the motor is connected to the telescopic rod to drive the telescopic rod to extend and retract. The telescopic rod is hinged to the transmission rod. Optionally, a synchronization rod is connected between the two front base frames 13; Optionally, a transmission rod is fixedly connected between the two rotating frames 12. When in use, the motor drives the transmission rod through the telescopic rod, so that the transmission rod synchronously drives the two rotating frames 12 to rotate or pulls the linkage frame 11 forward or backward, so that the movable seat frame can switch between a sitting position, a TV position and a lying position.

[0043] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 In some embodiments, a backrest cushion is installed on the backrest mounting frame 21, a seat cushion is installed on the linkage frame 11, a foot pad is installed on the leg assembly frame 31, and an extension pad is installed on the extension frame 51. When switching from a sitting position to a TV position, the rotating frame 12 is driven by the driving component 4 to rotate upward around the hinge point with the linkage frame 11, and drives the first leg link 32, the leg assembly frame 31 and the extension frame 51 to rotate upward and extend forward to a straight state to provide leg support for the user, and the combination of the foot pad and the extension pad can provide sufficient support distance to meet the user's leg extension, and at the same time, the backrest assembly 2 is driven to rotate to a tilted position and move forward through the linkage frame 11. When switching from the TV state to the lying state, the driving component 4 pulls the linkage frame 11 forward through the rotating frame 12, driving the second linkage rod 15B and the sixth linkage rod 15F to move forward, and at the same time drives the rear end of the third linkage rod 15C to rotate upward, and the front end of the rear base frame 14 rotates forward to rotate the sixth linkage rod 15F, and synchronously drives the rear end of the fourth linkage rod 15D to rotate upward through the fifth linkage rod 15E, thereby achieving the position of the linkage frame 11 and the leg assembly 3 while driving the linkage frame 11 to move forward, and the backrest assembly 2 as a whole moves forward under the traction of the linkage component 1, and at the same time, the first backrest link 22 is driven by the sixth linkage rod 15F to drive the backrest mounting frame 21 to rotate around the hinge point between itself and the second backrest link 23, so that the backrest mounting frame 21 rotates to the inclined position or the lying position while moving forward, so that the backrest assembly is zero against the wall when the seat is switched.

[0044] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A movable seat frame with zero wall support, characterized in that: include: A linkage assembly (1), the linkage assembly (1) comprising a linkage frame (11) and a rotating frame (12), the rotating frame (12) being hinged to a front end of the linkage frame (11); A backrest assembly (2), wherein the backrest assembly (2) is hinged to the rear end of the linkage frame (11); A leg assembly (3), a front end of the rotating frame (12) and the linkage frame (11) are both hinged to the leg assembly (3); A driving assembly (4), the driving assembly (4) being connected to the rotating frame (12) and being used for driving the rotating frame (12) to rotate or to pull the linkage frame (11) to move forward or backward, so that the movable seat frame can be switched between a sitting position, a TV position and a lying position; When the movable seat frame switches from a sitting position to a TV position, the leg assembly (3) extends forward, and at the same time, the backrest assembly (2) rotates to a tilted position and moves forward; When the movable seat frame switches from the TV posture state to the lying posture state, the backrest assembly (2) rotates to the lying position and moves forward; The leg assembly (3) comprises a leg assembly frame (31), a first leg connecting rod (32), a second leg connecting rod (33), a third leg connecting rod (34), a fourth leg connecting rod (35) and a fifth leg connecting rod (36); the first leg connecting rod (32) is hinged between the rear end of the leg assembly frame (31) and the rotating frame (12); the second leg connecting rod (33) is hinged between the linkage frame (11) and the rear end of the third leg connecting rod (34); the third leg connecting rod (34) is hinged to the rotating frame (12); the fourth leg connecting rod (35) is hinged between the front end of the third leg connecting rod (34) and the rear end of the fifth leg connecting rod (36); the front end of the fifth leg connecting rod (36) is hinged to the front end of the leg assembly frame (31).

2. The zero-wall movable seat frame according to claim 1, characterized in that: It also includes a first positioning pin (121), which is fixedly connected to the rotating frame (12); when the movable seat frame switches from a sitting posture to a TV posture, the third leg connecting rod (34) is engaged with the first positioning pin (121).

3. The zero-wall movable seat frame according to claim 1, characterized in that: The invention also comprises an extension assembly (5), wherein the extension assembly (5) comprises an extension frame (51) and an extension connecting rod (52), wherein the rear end of the extension connecting rod (52) is hinged to the front end of the fifth leg connecting rod (36), the front end of the extension connecting rod (52) is hinged to the extension frame (51), and the rear end of the extension frame (51) is hinged to the front end of the leg assembly frame (31).

4. The zero-wall movable seat frame according to claim 1, characterized in that: It also comprises a base (6), and the lower end of the linkage frame (11) is indirectly hinged to the base (6).

5. The zero-wall movable seat frame according to claim 4, characterized in that: The linkage assembly (1) further comprises a front base frame (13), a rear base frame (14), a first linkage rod (15A), a second linkage rod (15B), a third linkage rod (15C), a fourth linkage rod (15D), a fifth linkage rod (15E) and a sixth linkage rod (15F), wherein the first linkage rod (15A) is hinged between the lower end of the second linkage rod (15B) and the second leg connecting rod (33), the second linkage rod (15B) is hinged to the linkage frame (11), and the third linkage rod (15C) is hinged to the second linkage rod (15B). and the front base frame (13); the lower end of the front base frame (13) is hinged to the front end of the base (6); the upper end of the front base frame (13) is hinged to the front end of the fourth linkage rod (15D); the rear end of the fourth linkage rod (15D) is hinged to the linkage frame (11); the fifth linkage rod (15E) is hinged between the fourth linkage rod (15D) and the sixth linkage rod (15F); the sixth linkage rod (15F) is hinged to the rear base frame (14); and the rear base frame (14) is hinged to the rear end of the base (6).

6. The zero-wall movable seat frame according to claim 5, characterized in that: The fourth linkage rod (15D) is fixedly connected to a second limit pin (16), and the first linkage rod (15A) is provided with a limit position (17) corresponding to the second limit pin (16); When the movable seat frame is in a lying position, the second limit pin (16) is engaged with the limit latch (17).

7. The zero-wall movable seat frame according to claim 1 or 5, characterized in that: The backrest assembly (2) comprises a backrest mounting frame (21), a first backrest connecting rod (22), a second backrest connecting rod (23) and a third backrest connecting rod (24); the upper end of the first backrest connecting rod (22) is hinged to the upper end of the backrest mounting frame (21); the second backrest connecting rod (23) is hinged to the backrest mounting frame (21); the first backrest connecting rod (22) is located behind the second backrest connecting rod (23); the front end of the third backrest connecting rod (24) is hinged to the rear end of the linkage frame (11); the rear end of the third backrest connecting rod (24) is hinged to the first backrest connecting rod (22); the lower end of the first backrest connecting rod (22) is indirectly hinged to the linkage frame (11); and the lower end of the second backrest connecting rod (23) is hinged to the third backrest connecting rod (24).

8. The movable seat frame for zero-wall support according to claim 7, characterized in that: The backrest mounting frame (21) is provided with a third limiting pin (211), and the second backrest connecting rod (23) is provided with a backrest locking position (231) corresponding to the third limiting pin (211); When the movable seat frame switches from the TV posture state to the lying posture state, the third limiting pin (211) is engaged with the backrest locking position (231).

9. A seat, characterized in that: It comprises the zero-wall movable seat frame as described in any one of claims 1-8.

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