CN220675625U

CN220675625U - Sofa iron stand with zero gravity and zero leaning wall

Info

Publication number: CN220675625U
Application number: CN202322367108.1U
Authority: CN
Inventors: 谭长明
Original assignee: Dongguan Regal Furniture Manufacturing Co
Current assignee: Dongguan Regal Furniture Manufacturing Co
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-03-29
Anticipated expiration: 2033-08-31

Abstract

The utility model relates to the technical field of intelligent furniture, in particular to a sofa iron frame of a zero gravity zero-leaning wall, which comprises a fixed seat, a handrail frame, a foot rest assembly, a backrest assembly, a limit groove arranged on the handrail frame, a driving assembly arranged on the fixed seat and a linkage assembly respectively hinged with the fixed seat, the foot rest assembly, the handrail frame and the backrest assembly, wherein the driving assembly is used for driving the linkage assembly to rotate relative to the fixed seat, the foot rest assembly, the handrail frame or/and the backrest assembly so as to drive the handrail frame, the backrest assembly and the foot rest assembly to move, unfold or fold. The fifth foot rest rod is not easy to shake relative to the armrest frame due to the limitation of the limiting piece and the limiting groove, so that the stress at the hinge joint of the armrest frame and the fifth foot rest rod is balanced, and the practical service lives of the armrest frame and the fifth foot rest rod are prolonged; the expansion of bracket subassembly is convenient and stable, and bracket subassembly adopts a plurality of bracket pole articulated modes for the length when bracket subassembly was expanded correspondingly increases, improves the comfort level when the bracket.

Description

Sofa iron stand with zero gravity and zero leaning wall

Technical Field

The utility model relates to the technical field of intelligent furniture, in particular to a sofa iron frame with zero gravity and zero leaning wall.

Background

With the improvement of living standard of people, functional sofas and seats are more and more common in life. With the wide application of functional sofas, the comfort requirement for sofa seats is also increasing. Functional seats are generally provided with mechanical stretching devices, so that the seat can be adjusted among sitting, leisure and lying positions.

The patent application number is CN202221656077.0, the patent application name is a zero gravity zero leaning wall's seat frame's patent is disclosed base, seat curb plate subassembly, linkage subassembly one, pedal subassembly, set up actuating mechanism on the base, linkage subassembly two, back leaning component and the actuating lever one of being connected with actuating mechanism's output, the one end of actuating lever one runs through seat curb plate subassembly and linkage subassembly one end in proper order, actuating lever one rotates with seat curb plate subassembly to be connected, pedal subassembly is articulated with linkage subassembly one other end and seat curb plate subassembly respectively. The structure in the patent application is complex, the structure of the pedal assembly is not compact enough, the occupied space is large, the joint of the pedal assembly and the seat side plate assembly is easy to shake, and the service life of the utility model is reduced. Thus, the drawbacks are quite apparent and there is a need to provide a solution.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a sofa iron frame with zero gravity and zero leaning wall.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the sofa iron frame comprises a fixed seat, a handrail frame, a foot rest assembly, a back rest assembly, a limit groove arranged on the handrail frame, a driving assembly arranged on the fixed seat and a linkage assembly hinged with the fixed seat, the foot rest assembly, the handrail frame and the back rest assembly respectively, wherein the driving assembly is used for driving the linkage assembly to rotate relative to the fixed seat, the foot rest assembly, the handrail frame or/and the back rest assembly so as to drive the handrail frame, the back rest assembly and the foot rest assembly to move, expand or fold; the foot rest assembly comprises a first foot rest rod, a second foot rest rod, a third foot rest rod, a fourth foot rest rod, a fifth foot rest rod, a sixth foot rest rod, a seventh foot rest rod, an eighth foot rest rod, a ninth foot rest rod, foot rest pieces and limiting pieces arranged on the fifth foot rest rod; the limiting piece can be accommodated in the limiting groove; the one end of first foot rest pole is articulated with the handrail, the middle part of first foot rest pole is articulated with the middle part of sixth foot rest pole, the other end of first foot rest pole is articulated with the one end of second foot rest pole, the middle part of second foot rest pole is articulated with the middle part of seventh foot rest pole, the other end of second foot rest pole is articulated with the one end of third foot rest pole, the middle part of third foot rest pole is articulated with the middle part of eighth foot rest pole, the other end of third foot rest pole is articulated with the one end of fourth foot rest pole, the other end of fourth foot rest pole is articulated with the middle part of ninth foot rest pole, the one end of ninth foot rest pole is articulated with the foot rest, the other end of eighth foot rest pole is articulated with the one end of seventh foot rest pole, the other end of seventh foot rest pole is articulated with the one end of sixth foot rest pole, the other end of sixth foot rest pole is articulated with the linkage assembly of fifth foot rest pole and handrail respectively.

Further, be provided with the depressed part on the sixth foot rest pole, be provided with the joint spare on the seventh foot rest pole, the joint spare can contradict with the inner wall of depressed part.

Further, the driving assembly comprises a driver arranged on the fixed seat, a first driving rod hinged with the output end of the driving assembly, and a second driving rod with the middle part connected with the first driving rod, wherein one end of the second driving rod rotationally penetrates through the handrail frame and then is hinged with the linkage assembly.

Further, the linkage assembly comprises a first linkage rod, a second linkage rod and a linkage structure hinged with the fixed seat, the armrest frame and the backrest assembly respectively, the second driving rod rotationally penetrates through the armrest frame and then is fixedly connected with one end of the first linkage rod, the other end of the first linkage rod is hinged with one end of the second linkage rod, and the other end of the second linkage rod is hinged with the fifth footrest rod.

Further, the linkage structure further comprises a third linkage rod, a fourth linkage rod, a fifth linkage rod, a sixth linkage rod, a seventh linkage rod, an eighth linkage rod and a ninth linkage rod, one end of the third linkage rod is hinged with one end of the fixing seat, and the other end of the third linkage rod is hinged with one end of the eighth linkage rod; the middle part of the eighth linkage rod is hinged with one end of a ninth linkage rod, the other end of the eighth linkage rod is hinged with the armrest frame, the other end of the ninth linkage rod is hinged with the back component, the middle part of the third linkage rod is hinged with one end of a fifth linkage rod, the other end of the fifth linkage rod is hinged with one end of a sixth linkage rod, the middle part of the sixth linkage rod is hinged with the armrest frame, the other end of the sixth linkage rod is hinged with one end of a seventh linkage rod, and the other end of the seventh linkage rod is hinged with a fifth footrest rod; one end of the fourth linkage rod is hinged with the other end of the fixed seat, and the backrest component is also hinged with the armrest frame and the other end of the fourth linkage rod.

Further, the backrest component comprises a first backrest rod, a supporting piece, a second backrest rod and a triangular backrest piece, one end of the first backrest rod is hinged to the armrest frame, the other end of the first backrest rod is hinged to one end of the supporting piece, the other end of the supporting piece is hinged to one end of the second backrest rod, the other end of the second backrest rod is hinged to a base angle of the triangular backrest piece, the other base angle of the triangular backrest piece is hinged to one end of the ninth linkage rod, and the top angle of the triangular backrest piece is hinged to the fourth linkage rod.

Further, the backrest assembly further comprises a third backrest rod, wherein two ends of the third backrest rod are respectively hinged with the middle parts of the armrest frame and the second backrest rod.

Further, the sofa iron frame of the zero gravity zero leaning wall further comprises an L-shaped bracket arranged on the armrest frame.

The utility model has the beneficial effects that: according to the utility model, under the sitting posture state, the fifth foot rest rod is not easy to shake relative to the armrest frame by the limitation of the limiting piece and the limiting groove, so that the stress at the hinge joint of the armrest frame and the fifth foot rest rod is balanced, and the practical service lives of the armrest frame and the fifth foot rest rod are prolonged; the expansion of bracket subassembly is convenient and stable, and bracket subassembly adopts a plurality of bracket pole articulated modes for the length when bracket subassembly was expanded correspondingly increases, improves the comfort level when the bracket.

Drawings

Fig. 1 is a schematic perspective view of the present utility model in a sitting posture.

Fig. 2 is a schematic perspective view of the present utility model in a state of lying with zero gravity.

Fig. 3 is a schematic perspective view of the second embodiment of the present utility model in a state of lying with zero gravity.

Fig. 4 is a schematic perspective view of a driving assembly according to the present utility model.

Reference numerals illustrate:

1. a fixing seat; 2. a drive assembly; 3. a leg rest assembly; 4. a handrail frame; 5. a backrest assembly; 6. a limit groove; 7. a linkage assembly; 21. a driver; 22. a first driving lever; 23. a second driving lever; 31. a first leg rest bar; 32. a second leg rest bar; 33. a third leg rest bar; 34. a fourth leg rest bar; 35. a fifth leg rest; 36. a sixth leg rest bar; 37. a seventh leg rest bar; 38. an eighth leg rest bar; 39. a ninth leg rest; 40. a foot rest; 41. a limiting piece; 42. a recessed portion; 43. a clamping piece; 51. a first backrest bar; 52. a second backrest bar; 53. a third backrest bar; 54. a triangle back rest; 55. a support; 71. a first linkage rod; 72. a second link lever; 73. a third link lever; 74. a fourth link lever; 75. a fifth link lever; 76. a sixth link lever; 77. a seventh linkage rod; 78. eighth linkage rod; 79. and a ninth linkage rod.

Detailed Description

The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, the utility model provides a sofa iron frame with zero gravity and zero leaning wall, which comprises a fixed seat 1, a handrail frame 4, a footrest component 3, a backrest component 5, a limit groove 6 arranged on the handrail frame 4, a driving component 2 arranged on the fixed seat 1 and a linkage component 7 hinged with the fixed seat 1, the footrest component 3, the handrail frame 4 and the backrest component 5 respectively, wherein the driving component 2 is used for driving the linkage component 7 to rotate relative to the fixed seat 1, the footrest component 3, the handrail frame 4 and/or the backrest component 5 so as to drive the handrail frame 4, the backrest component 5 and the footrest component 3 to move, unfold or fold; the leg rest assembly 3 comprises a first leg rest rod 31, a second leg rest rod 32, a third leg rest rod 33, a fourth leg rest rod 34, a fifth leg rest rod 35, a sixth leg rest rod 36, a seventh leg rest rod 37, an eighth leg rest rod 38, a ninth leg rest rod 39, a leg rest 40 and a limiting piece 41 arranged on the fifth leg rest rod 35; the limiting piece 41 can be accommodated in the limiting groove 6; the one end of first foot rest pole 31 is articulated with handrail 4, the middle part of first foot rest pole 31 is articulated with the middle part of sixth foot rest pole 36, the other end of first foot rest pole 31 is articulated with the one end of second foot rest pole 32, the middle part of second foot rest pole 32 is articulated with the middle part of seventh foot rest pole 37, the other end of second foot rest pole 32 is articulated with the one end of third foot rest pole 33, the middle part of third foot rest pole 33 is articulated with the middle part of eighth foot rest pole 38, the other end of third foot rest pole 33 is articulated with the one end of fourth foot rest pole 34, the other end of fourth foot rest pole 34 is articulated with the middle part of ninth foot rest pole 39, the one end of ninth foot rest pole 39 is articulated with foot rest 40, the other end of eighth foot rest pole 38 is articulated with the one end of seventh foot rest pole 37, the other end of seventh foot rest pole 37 is articulated with the one end of sixth foot rest pole 34, the linkage of fourth foot rest pole 34 is articulated with the other end of fifth foot rest pole 35 and the one end of fifth foot rest pole 35.

In the in-service use, when sofa iron stand is in the position of sitting state, lean against the subassembly 5 and lean against the wall and place, locating part 41 holding is in spacing groove 6, foot rest subassembly 3 and lean against subassembly 5 and be in folding condition, when changing sofa iron stand from the position of sitting state to zero gravity lean against the state, drive assembly 2 drives foot rest subassembly 3 and lean against subassembly 5 and expand and synchronous drive handrail frame 4 and move for fixing base 1 to the direction of the wall body that keeps away from through linkage assembly 7, handrail frame 4 moves to the direction of keeping away from the wall body, can avoid the problem that the back subassembly 5 of expanding contradicts with the wall body, thereby realize the state switching of sofa iron stand, be suitable for different user demands. The unfolding steps of the foot rest assembly 3 are as follows: the linkage assembly 7 drives the fifth leg rest rod 35 to rotate relative to the armrest frame 4, the fifth leg rest rod 35 which rotates drives the sixth leg rest rod 36, the seventh leg rest rod 37, the eighth leg rest rod 38 and the ninth leg rest rod 39 to rotate in the direction away from the wall body, and drives the limiting piece 41 to rotate out of the limiting groove 6, the sixth leg rest rod 36, the seventh leg rest rod 37 and the eighth leg rest rod 38 respectively drive the first leg rest rod 31, the second leg rest rod 32 and the third leg rest rod 33 which are hinged to the middle part of the sixth leg rest rod 36, the second leg rest rod 31 and the third leg rest rod 33 to rotate relative to the armrest frame 4, the third leg rest rod 33 drives the fourth leg rest rod 34 to rotate, and the ninth leg rest rod 39 is convenient to drive the leg rest piece 40 to extend out of the fixed seat 1 stably through the guiding and pulling actions of the first leg rest rod 31, the third leg rest rod 33 and the fourth leg rest rod 34, and the leg rest assembly 3 is convenient to expand stably. In the sitting posture state, the fifth foot rest rod 35 is not easy to shake relative to the armrest frame 4 by the limitation of the limiting piece 41 and the limiting groove 6, so that the stress at the hinge joint of the armrest frame 4 and the fifth foot rest rod 35 is balanced, and the practical service lives of the armrest frame 4 and the fifth foot rest rod 35 are prolonged; the expansion of the foot rest assembly 3 is convenient and stable, and the foot rest assembly 3 adopts a mode of hinging a plurality of foot rest rods, so that the length of the foot rest assembly 3 during expansion is correspondingly increased, and the comfort level during foot rest is improved.

Further, a recess 42 is provided on the sixth leg rest 36, a clamping piece 43 is provided on the seventh leg rest 37, and the clamping piece 43 can abut against the inner wall of the recess 42.

In the actual use process, when the sofa iron frame is changed from the zero gravity lying state to the sitting state, the clamping piece 43 is abutted against the inner wall of the concave part 42, and the sofa iron frame is changed into the sitting state. Through the spacing cooperation of joint portion and depressed part 42, avoid bracket subassembly 3 excessively folding, influence bracket subassembly 3's normal expansion. The concave part 42 is formed by inward concave arrangement of the outer wall of the sixth foot rest rod 36, and the clamping part is abutted against the inner wall of the concave part 42, so that the folded sixth foot rest rod 36 and the seventh foot rest rod 37 are not affected to be clung, the structure of the foot rest device is more compact while the foot rest device is provided with a plurality of foot rest rods, and the space occupation rate of the foot rest device is reduced.

Further, the driving assembly 2 includes a driver 21 disposed on the fixing base 1, a first driving rod 22 hinged to an output end of the driving assembly 2, and a second driving rod 23 with a middle portion connected to the first driving rod 22, where one end of the second driving rod 23 rotationally penetrates through the handrail frame 4 and then is hinged to the linkage assembly 7.

Specifically, as shown in fig. 2 and 3, the linkage assembly 7 includes a first linkage rod 71, a second linkage rod 72, and a linkage structure hinged to the fixing seat 1, the armrest frame 4, and the backrest assembly 5, where the second driving rod 23 rotatably penetrates through the armrest frame 4 and is fixedly connected to one end of the first linkage rod 71, the other end of the first linkage rod 71 is hinged to one end of the second linkage rod 72, and the other end of the second linkage rod 72 is hinged to the fifth leg rest rod 35. The driver 21 may adopt an existing electric push rod, the driving assembly 2 drives the second driving rod 23 to rotate relative to the armrest frame 4 through the first driving rod 22 and drives the armrest frame 4 to move towards a direction close to or far away from a wall body through the first driving rod 22 and the second driving rod 23, the moving armrest frame 4 can drive the backrest assembly 5 to unfold or fold through a linkage structure, and the second linkage rod 72 can drive the leg rest assembly 3 to unfold or fold rotationally. In the actual use process, the driver 21 starts and drives the second driving rod 23, the first linkage rod 71 and the second linkage rod 72 to rotate through the first driving rod 22, the second linkage rod 72 drives the fifth footrest rod 35 to rotate relative to the armrest frame 4, so that the footrest assembly 3 is unfolded, meanwhile, the driving assembly 2 drives the armrest frame 4 to move in a direction away from a wall body through the first driving rod 22 and the second driving rod 23, and the armrest frame 4 drives the backrest assembly 5 to move and unfold in a direction away from the wall body through the linkage structure, so that the transition of the seat posture in the wall-leaning state is realized.

Further, the linkage structure further includes a third linkage rod 73, a fourth linkage rod 74, a fifth linkage rod 75, a sixth linkage rod 76, a seventh linkage rod 77, an eighth linkage rod 78 and a ninth linkage rod 79, wherein one end of the third linkage rod 73 is hinged with one end of the fixing seat 1, and the other end of the third linkage rod 73 is hinged with one end of the eighth linkage rod 78; the middle part of the eighth linkage rod 78 is hinged with one end of a ninth linkage rod 79, the other end of the eighth linkage rod 78 is hinged with the armrest frame 4, the other end of the ninth linkage rod 79 is hinged with the backrest component 5, the middle part of the third linkage rod 73 is hinged with one end of a fifth linkage rod 75, the other end of the fifth linkage rod 75 is hinged with one end of a sixth linkage rod 76, the middle part of the sixth linkage rod 76 is hinged with the armrest frame 4, the other end of the sixth linkage rod 76 is hinged with one end of a seventh linkage rod 77, and the other end of the seventh linkage rod 77 is hinged with a fifth leg rest rod 35; one end of the fourth linkage rod 74 is hinged to the other end of the fixed seat 1, and the backrest assembly 5 is also hinged to the other ends of the armrest frame 4 and the fourth linkage rod 74.

In the actual use process, when the sofa iron frame is changed from a sitting posture state to a zero gravity lying state, the driving component 2 drives the armrest frame 4 to move in a direction away from the wall body, and simultaneously drives the fifth leg rest rod 35 to rotate through the first linkage rod 71 and the second linkage rod 72; the moving armrest frame 4 drives the eighth linkage rod 78 and the backrest component 5 to move forwards together, the eighth linkage rod 78 drives the third linkage rod 73 to rotate in a direction away from the wall body while the eighth linkage rod 78 rotates relative to the armrest frame 4 and the third linkage rod 73 through the restriction of the third linkage rod 73 and the fixed seat 1; the third rotating linkage rod 73 drives the fifth leg rest rod 35 to rotate through the fifth linkage rod 75, the sixth linkage rod 76 and the seventh linkage rod 77, and the direction in which the seventh linkage rod 77 drives the fifth leg rest rod 35 to rotate is the same as the direction in which the second linkage rod 72 drives the fifth leg rest rod 35 to rotate, so that smooth and stable unfolding of the leg rest assembly 3 is facilitated; the eighth rotating linkage rod 78 can drive the back component 5 to rotate relative to the armrest frame 4 and the fourth linkage rod 74 through the ninth linkage rod 79, and the back component 5 can synchronously drive the fourth linkage rod 74 to move relative to the fixed seat 1 in a direction away from the wall body, so that the back component 5 can be unfolded directly by the wall body, and the state transition of the sofa iron frame is completed.

Further, the backrest assembly 5 includes a first backrest 51, a supporting member 55, a second backrest 52 and a triangle backrest 54, one end of the first backrest 51 is hinged to the armrest frame 4, the other end of the first backrest 51 is hinged to one end of the supporting member 55, the other end of the supporting member 55 is hinged to one end of the second backrest 52, the other end of the second backrest 52 is hinged to a bottom angle of the triangle backrest 54, the other bottom angle of the triangle backrest 54 is hinged to one end of the ninth linkage 79, and a vertex angle of the triangle backrest 54 is hinged to the fourth linkage 74.

Specifically, the backrest assembly 5 further includes a third backrest rod 53 having both ends hinged to the middle portions of the armrest frame 4 and the second backrest rod 52, respectively.

As shown in fig. 1, the sofa iron frame of the zero gravity zero wall further comprises an L-shaped bracket 8 arranged on the armrest frame 4.

In the actual use process, the L-shaped bracket 8 is convenient to connect and install with the armrest frame 4, and the L-shaped bracket 8 can assist the armrest frame 4 to be used as an armrest, so that the comfort level in use is improved.

All technical features in the embodiment can be freely combined according to actual needs.

The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.

Claims

1. A sofa iron stand of zero gravity zero wall, its characterized in that: the device comprises a fixed seat, a handrail frame, a foot rest assembly, a backrest assembly, a limit groove arranged on the handrail frame, a driving assembly arranged on the fixed seat and a linkage assembly respectively hinged with the fixed seat, the foot rest assembly, the handrail frame and the backrest assembly, wherein the driving assembly is used for driving the linkage assembly to rotate relative to the fixed seat, the foot rest assembly, the handrail frame or/and the backrest assembly so as to drive the handrail frame, the backrest assembly and the foot rest assembly to move, unfold or fold; the foot rest assembly comprises a first foot rest rod, a second foot rest rod, a third foot rest rod, a fourth foot rest rod, a fifth foot rest rod, a sixth foot rest rod, a seventh foot rest rod, an eighth foot rest rod, a ninth foot rest rod, foot rest pieces and limiting pieces arranged on the fifth foot rest rod; the limiting piece can be accommodated in the limiting groove; the one end of first foot rest pole is articulated with the handrail, the middle part of first foot rest pole is articulated with the middle part of sixth foot rest pole, the other end of first foot rest pole is articulated with the one end of second foot rest pole, the middle part of second foot rest pole is articulated with the middle part of seventh foot rest pole, the other end of second foot rest pole is articulated with the one end of third foot rest pole, the middle part of third foot rest pole is articulated with the middle part of eighth foot rest pole, the other end of third foot rest pole is articulated with the one end of fourth foot rest pole, the other end of fourth foot rest pole is articulated with the middle part of ninth foot rest pole, the one end of ninth foot rest pole is articulated with the foot rest, the other end of eighth foot rest pole is articulated with the one end of seventh foot rest pole, the other end of seventh foot rest pole is articulated with the one end of sixth foot rest pole, the other end of sixth foot rest pole is articulated with the linkage assembly of fifth foot rest pole and handrail respectively.

2. The sofa iron frame of a zero gravity zero wall according to claim 1, wherein: be provided with the depressed part on the sixth foot rest pole, be provided with the joint spare on the seventh foot rest pole, the joint spare can be contradicted with the inner wall of depressed part.

3. The sofa iron frame of a zero gravity zero wall according to claim 1, wherein: the driving assembly comprises a driver arranged on the fixed seat, a first driving rod hinged with the output end of the driving assembly, and a second driving rod with the middle part connected with the first driving rod, wherein one end of the second driving rod rotationally penetrates through the handrail frame and then is hinged with the linkage assembly.

4. A zero gravity zero wall sofa iron frame according to claim 3, wherein: the linkage assembly comprises a first linkage rod, a second linkage rod and a linkage structure hinged with the fixed seat, the armrest frame and the backrest assembly respectively, wherein the second driving rod rotationally penetrates through the armrest frame and then is fixedly connected with one end of the first linkage rod, the other end of the first linkage rod is hinged with one end of the second linkage rod, and the other end of the second linkage rod is hinged with the fifth footrest rod.

5. The sofa iron frame of claim 4, wherein said sofa iron frame comprises: the linkage structure further comprises a third linkage rod, a fourth linkage rod, a fifth linkage rod, a sixth linkage rod, a seventh linkage rod, an eighth linkage rod and a ninth linkage rod, one end of the third linkage rod is hinged with one end of the fixing seat, and the other end of the third linkage rod is hinged with one end of the eighth linkage rod; the middle part of the eighth linkage rod is hinged with one end of a ninth linkage rod, the other end of the eighth linkage rod is hinged with the armrest frame, the other end of the ninth linkage rod is hinged with the back component, the middle part of the third linkage rod is hinged with one end of a fifth linkage rod, the other end of the fifth linkage rod is hinged with one end of a sixth linkage rod, the middle part of the sixth linkage rod is hinged with the armrest frame, the other end of the sixth linkage rod is hinged with one end of a seventh linkage rod, and the other end of the seventh linkage rod is hinged with a fifth footrest rod; one end of the fourth linkage rod is hinged with the other end of the fixed seat, and the backrest component is also hinged with the armrest frame and the other end of the fourth linkage rod.

6. The zero gravity zero wall sofa iron frame of claim 5, wherein: the backrest assembly comprises a first backrest rod, a supporting piece, a second backrest rod and a triangular backrest piece, one end of the first backrest rod is hinged to the armrest frame, the other end of the first backrest rod is hinged to one end of the supporting piece, the other end of the supporting piece is hinged to one end of the second backrest rod, the other end of the second backrest rod is hinged to a bottom angle of the triangular backrest piece, the other bottom angle of the triangular backrest piece is hinged to one end of the ninth linkage rod, and the top angle of the triangular backrest piece is hinged to the fourth linkage rod.

7. The zero gravity zero wall sofa iron frame of claim 6, wherein: the backrest assembly further comprises a third backrest rod, wherein two ends of the third backrest rod are hinged with the middle parts of the armrest frame and the second backrest rod respectively.

8. The sofa iron frame of a zero gravity zero wall according to claim 1, wherein: the sofa iron frame of the zero gravity zero leaning wall further comprises an L-shaped bracket arranged on the armrest frame.