CN220174793U - Sofa translation frame and adjustable sofa thereof - Google Patents

Abstract

The utility model discloses a sofa translation frame which comprises a first connecting seat, a second connecting seat, a first connecting rod, a second connecting rod and a limiting structure, wherein one end of the first connecting rod is pivoted with one side of the first connecting seat, the other end of the first connecting rod is pivoted with one side of the second connecting seat, one end of the second connecting rod is pivoted with one side of the first connecting seat, the other end of the second connecting rod is pivoted with the other side of the second connecting seat, so that the first connecting seat, the second connecting seat, the first connecting rod and the second connecting rod jointly form a four-bar mechanism, the second connecting seat moves relative to the first connecting seat by means of deformation of the four-bar mechanism, the second connecting seat moves relative to the first connecting seat and has a first limiting position and a second limiting position, and the limiting structure is arranged on the first connecting seat and/or the second connecting seat. The sofa translation frame has the advantages of simple structure and low cost. The utility model also discloses an adjustable sofa with the armrests and the adjustable backrest.

Description

Sofa translation frame and adjustable sofa thereof

Technical Field

The utility model relates to the field of furniture equipment, in particular to a sofa translation frame.

Background

The sofa is one of common household furniture, along with the demand of use, back and handrail generally can set up to multiple gesture, and current switching back and handrail gesture all is realized through the motor, and though utilize the motor can realize the switching of back and handrail angle, motor drive's mode has following defect, firstly the cost of motor is high, and secondly cost of maintenance is high, leads to sofa holistic market competition low, and the angle of some sofa its regulation is generally two, specifically can see the switching between two states of description attached hereto figure 2 and figure 4, so set up a motor drive overall cost and compare high, so can't satisfy current user demand.

In order to solve the above problems, it is necessary to provide a sofa translation frame.

Disclosure of Invention

An object of the present utility model is to provide a sofa translation frame with simple structure and low cost.

Another object of the present utility model is to provide an adjustable sofa with an adjustable backrest, which has the advantages of simple structure and low cost.

Another object of the present utility model is to provide an adjustable sofa with adjustable armrests, which has the advantages of simple structure and low cost.

In order to achieve the above objective, the sofa translation frame provided by the present utility model includes a first connecting seat, a second connecting seat, a first connecting rod, a second connecting rod and a limiting structure, wherein one end of the first connecting rod is pivoted to one side of the first connecting seat, the other end of the first connecting rod is pivoted to one side of the second connecting seat, one end of the second connecting rod is pivoted to one side of the first connecting seat, and the other end of the second connecting rod is pivoted to the other side of the second connecting seat, so that the first connecting seat, the second connecting seat, the first connecting rod and the second connecting rod together form a four-bar mechanism, the second connecting seat is movable relative to the first connecting seat by means of deformation of the four-bar mechanism, the second connecting seat is movable relative to the first connecting seat and has a first limit position and a second limit position, and the limiting structure is disposed on the first connecting seat and/or the second connecting seat by means of the limiting structure.

Preferably, the first connecting seat and the second connecting seat are respectively provided with a mounting surface capable of being mounted on a sofa, when the second connecting seat is positioned at a first limit position, the mounting surface of the second connecting seat and the mounting surface of the first connecting seat are parallel to a horizontal plane, when the second connecting seat is switched from the first limit position to the second limit position, the second connecting seat gradually inclines upwards, and when the second connecting seat is positioned at a second limit position, an included angle between the mounting surface of the second connecting seat and the horizontal plane is an obtuse angle.

Preferably, the limiting structure comprises a first limiting part, the first limiting part is arranged on the first connecting seat, the first limiting part is positioned between the first connecting rod and the second connecting rod, when the second connecting seat is positioned at the first limit position, the first connecting rod abuts against the first limiting part, and when the second connecting seat is positioned at the second limit position, the second connecting rod abuts against the first limiting part.

Preferably, the limiting structure further comprises a second limiting part, the second limiting part is arranged on the second connecting seat, the second limiting part is located between the first connecting rod and the second connecting rod, when the second connecting seat is located at the first limiting position, the second connecting rod abuts against the second limiting part, when the second connecting seat is located at the second limiting position, the first connecting rod abuts against the second limiting part.

Specifically, the length of the first connecting rod is longer than that of the second connecting rod, the first connecting rod is positioned close to the second limit position side, and the second connecting rod is positioned close to the first limit position side.

Specifically, the pivot point of the first connecting rod and the second connecting seat is a first pivot point, the pivot point of the second connecting rod and the second connecting seat is a second pivot point, and the first pivot point and the second pivot point are arranged on the second connecting seat in a high-low mode.

Preferably, the first connecting seat comprises a first connecting plate, a second connecting plate, a first connecting column and a second connecting column, the first connecting plate and the second connecting plate are symmetrically arranged, the first connecting column is connected between the first connecting plate and the second connecting plate, the second connecting column is connected between the first connecting plate and the second connecting plate, the first connecting column and the second connecting column are arranged at intervals, one end of the first connecting rod is rotatably sleeved on the first connecting column, and one end of the second connecting rod is rotatably sleeved on the second connecting column.

Specifically, the first connecting plate and the second connecting plate all outwards extend to form first connecting lug, be equipped with the first connecting hole that is used for connecting on the first connecting lug, first locating part is the cylinder, extend in between the first connecting plate with the second connecting plate, first locating part both ends are fixed in respectively the first connecting plate with the second connecting plate.

Specifically, a rubber piece for reducing friction is arranged between the first connecting rod and the first connecting column, and a rubber piece for reducing friction is arranged between the second connecting rod and the second connecting column.

Preferably, the second connecting seat comprises a third connecting plate, a fourth connecting plate, a third connecting column and a fourth connecting column, the third connecting plate and the fourth connecting plate are symmetrically arranged, the third connecting column is connected between the third connecting plate and the fourth connecting plate, the fourth connecting column is connected between the third connecting plate and the fourth connecting plate, the third connecting column and the fourth connecting column are arranged at intervals, one end of the first connecting rod is rotatably sleeved on the third connecting column, and one end of the second connecting rod is rotatably sleeved on the fourth connecting column.

Specifically, the third connecting plate and the fourth connecting plate extend outwards to form a second connecting lug, and a second connecting hole for connection is formed in the second connecting lug.

Specifically, be equipped with the rubber spare that is used for reducing friction between the first connecting rod with be equipped with between the third spliced pole, the second connecting rod with be equipped with the rubber spare that is used for reducing friction between the fourth spliced pole, the second locating part be the cylinder, extend in between the third connecting plate with the fourth connecting plate, the second locating part both ends are fixed in respectively the third connecting plate with the fourth connecting plate.

In order to achieve the above purpose, the adjustable sofa provided by the utility model comprises a backrest, a sofa body and the sofa translation frame, wherein the first connecting seat is connected with the sofa body, and the second connecting seat is connected with the backrest.

Preferably, when the second connecting seat is at the first limit position, the backrest is arranged vertically, and when the second connecting seat is at the second limit position, the backrest is arranged obliquely.

In order to achieve the above purpose, the adjustable sofa provided by the utility model comprises armrests, a sofa body and the sofa translation frame, wherein the first connecting seat is connected with the sofa body, and the second connecting seat is connected with the armrests.

In order to achieve the above purpose, the adjustable sofa provided by the utility model comprises armrests, a sofa body and the sofa translation frame, wherein the first connecting seat is connected with the sofa body, and the second connecting seat is connected with the armrests.

Compared with the prior art, the sofa translation frame of the utility model combines the first connecting seat, the second connecting seat, the first connecting rod, the second connecting rod, the limiting structure and the like together, one end of the first connecting rod is pivoted with one side of the first connecting seat, the other end of the first connecting rod is pivoted with one side of the second connecting seat, one end of the second connecting rod is pivoted with one side of the first connecting seat, the other end of the second connecting rod is pivoted with the other side of the second connecting seat, so that the first connecting seat, the second connecting seat, the first connecting rod and the second connecting rod jointly form a four-bar mechanism, the second connecting seat moves relative to the first connecting seat by the deformation of the four-bar mechanism, the second connecting seat moves relative to the first connecting seat to have a first limiting position and a second limiting position, the limiting structure is arranged on the first connecting seat and/or the second connecting seat, the second connecting seat is limited at the first limit position or the second limit position by virtue of the limiting structure, and as the first connecting seat, the second connecting seat, the first connecting rod and the second connecting rod form a four-bar mechanism, the movement of the second connecting seat can be realized by the movement of the four-bar mechanism, so that the movement of the second connecting seat relative to the first connecting seat is realized, the second connecting seat can be stabilized at the two limit positions by virtue of the limitation of the limiting structure, and the first limit position and the second limit position can be switched between the two positions.

Drawings

Fig. 1 is a schematic structural view of the adjustable sofa of the present utility model with the sofa translational frame in the second limit position.

Fig. 2 is a schematic view of the internal structure of fig. 1.

Fig. 3 is a schematic structural view of the adjustable sofa of the present utility model with the sofa translational frame in the first limit position.

Fig. 4 is a schematic view of the internal structure of fig. 3.

Fig. 5 is a schematic view of the internal structure of fig. 3 at another angle.

Fig. 6 is a schematic perspective view of the sofa translating frame of the present utility model in a second extreme position.

Fig. 7 is a schematic plan view of the sofa translating frame of the present utility model in a second extreme position.

Fig. 8 is a schematic perspective view of the sofa translating frame of the present utility model in a transitional position.

Fig. 9 is a schematic plan view of the sofa translating frame of the present utility model in a transitional position.

Fig. 10 is a schematic perspective view of the sofa translating frame of the present utility model in a first extreme position.

Fig. 11 is a schematic perspective view of another angle of the sofa frame in the first limit position.

Fig. 12 is a schematic view of the internal plan structure of fig. 7.

Fig. 13 is a schematic view of the internal plan structure of fig. 11.

Detailed Description

Referring to fig. 1 to 5, a specific structure of an adjustable sofa 100 of the present utility model is shown, which includes a backrest 20, a sofa body 30 and a sofa translational frame 10, wherein the sofa translational frame 10 is installed between the backrest 20 and the sofa body 30, so that the backrest 20 can adjust the position and angle relative to the sofa body 30. Referring to fig. 6 to 13, the sofa translation frame 10 includes a first connecting seat 1, a second connecting seat 2, a first connecting rod 3, a second connecting rod 4 and a limiting structure 5. The first connecting seat 1 and the second connecting seat 2 have mounting surfaces 1a and 2a, respectively, which can be mounted on a sofa, the first connecting seat 1 is connected with the sofa body 30 through the mounting surface 1a, and the second connecting seat 2 is connected with the backrest 20 through the mounting surface 2 a. The first link 3 and the second link 4 are assembled between the first connection base 1 and the second connection base 2, and connected to the back surface opposite to the mounting surfaces 1a, 2 a. More specifically, one end of the first link 3 is pivotally connected to one side of the first connecting seat 1, that is, the first link 3 can rotate relative to the first connecting seat 1, the other end of the first link 3 is pivotally connected to one side of the second connecting seat 2, one end of the second link 4 is pivotally connected to one side of the first connecting seat 1, and the other end of the second link 4 is pivotally connected to the other side of the second connecting seat 2, so that the first connecting seat 1, the second connecting seat 2, the first link 3 and the second link 4 together form a four-bar mechanism, the second connecting seat 2 moves relative to the first connecting seat 1 by deformation of the four-bar mechanism, and the second connecting seat 2 moves relative to the first connecting seat 1 to have a first limit position and a second limit position. The limiting structure 5 is arranged on the first connecting seat 1, and the limiting structure 5 is used for limiting the second connecting seat 2 at the first limit position or the second limit position. Because the first connecting seat 1, the second connecting seat 2, the first connecting rod 3 and the second connecting rod 4 form a four-bar mechanism, the movement of the second connecting seat 2 can be realized by the movement of the four-bar mechanism, so that the movement of the second connecting seat 2 relative to the first connecting seat 1 is realized, the second connecting seat 2 can be stabilized at two limit positions by utilizing the limit of the limit structure 5, and the first limit position and the second limit position are realized, so that the switching between the two positions is realized. As an alternative embodiment, the limiting structure 5 may also be disposed on the second connecting seat 2, or the limiting structures 5 may be disposed on the first connecting seat 1 and the second connecting seat 2, so long as the second connecting seat 2 can be switchably limited to the first limit position and the second limit position. When the second connecting seat 2 is at the first limit position, the mounting surface 2a of the second connecting seat 2 and the mounting surface 1a of the first connecting seat 1 are parallel to the horizontal plane, the backrest 20 is vertically arranged (see fig. 3-5 and fig. 13, see the dotted line P in fig. 13, and the horizontal plane) and when the second connecting seat 2 is switched from the first limit position to the second limit position, the second connecting seat 2 gradually tilts upwards, and when the second connecting seat 2 is at the second limit position, the included angle between the mounting surface 2a of the second connecting seat 2 and the horizontal plane is an obtuse angle, (see the included angle θ in fig. 12, see the dotted line P in fig. 12, and the backrest 20 is obliquely arranged (see fig. 1-2 and fig. 12, respectively). In other embodiments, the adjustable sofa provided by the utility model comprises armrests (not shown), a sofa body and a sofa translational frame, wherein the first connecting seat 1 is connected with the sofa body through the mounting surface 1a, and the second connecting seat 2 is connected with the armrests through the mounting surface 2a, namely, the sofa translational frame provided by the utility model can be used for adjusting the backrest and the sofa body 30, and can be used for adjusting the armrests and the sofa body 30, and only needs to be adaptively adjusted according to specific angles of entities. More specifically, the following are:

referring to fig. 6 to 13, the limiting structure 5 includes a first limiting member 52, the first limiting member 52 is disposed on the first connecting seat 1, the first limiting member 52 is located between the first connecting rod 3 and the second connecting rod 4, when the second connecting seat 2 is at the first limit position, the inner edge of the first connecting rod 3 abuts against the first limiting member 52 (see fig. 11 in detail), and when the second connecting seat 2 is at the second limit position, the inner edge of the second connecting rod 4 abuts against the first limiting member 52 (see fig. 7 in detail). Specifically, the limiting structure 5 further includes a second limiting member 51, the second limiting member 51 is disposed on the second connecting seat 2, the second limiting member 51 is located between the first connecting rod 3 and the second connecting rod 4, when the second connecting seat 2 is in the first limit position, the inner edge of the second connecting rod 4 abuts against the second limiting member 51 (see fig. 11 in particular), and when the second connecting seat 2 is in the second limit position, the inner edge of the first connecting rod 3 abuts against the second limiting member 51 (see fig. 7 in particular).

Referring to fig. 8 to 9, the length of the first link 3 is longer than the length of the second link 4. Specifically, the pivot point between the first link 3 and the second connecting seat 2 is a first pivot point a, the pivot point between the second link 4 and the second connecting seat 2 is a second pivot point b, and the first pivot point a and the second pivot point b are disposed on the second connecting seat 2 in a height-to-height manner (see fig. 9). The first connecting rod 3 is located near the second limit position side, the second connecting rod 4 is located near the first limit position side, and when the second connecting rod 2 moves relative to the first connecting rod 1 and switches the position to the first limit position through a four-bar mechanism formed by the first connecting rod 1, the second connecting rod 2, the first connecting rod 2 and the second connecting rod 2 (the first connecting rod 1 is in a horizontal plane) can reach a state parallel to the first connecting rod 1 and is positioned by the limit structure 5 in the state when the second connecting rod 2 moves relative to the first connecting rod 1 and switches the position to the first limit position; when the second connecting seat 2 moves relative to the first connecting seat 1 and switches to the second limit position, the second connecting seat 2 gradually inclines upwards because the first connecting rod 3 is longer than the second connecting rod 4, so that the included angle between the mounting surface 2a and the horizontal plane forms an obtuse angle, and is positioned by the limit structure 5 in a preset angle state.

Referring to fig. 8 to 9, the first connecting seat 1 includes a first connecting plate 11, a second connecting plate 12, a first connecting post 13 and a second connecting post 14, the first connecting plate 11 and the second connecting plate 12 are symmetrically disposed, the first connecting post 13 is connected between the first connecting plate 11 and the second connecting plate 12, the second connecting post 14 is connected between the first connecting plate 11 and the second connecting plate 12, the first connecting post 13 and the second connecting post 14 are disposed at a distance from each other, one end of the first connecting rod 3 is rotatably sleeved on the first connecting post 13, and one end of the second connecting rod 4 is rotatably sleeved on the second connecting post 14. Specifically, the first connecting plate 11 and the second connecting plate 12 extend outwards to form a first connecting lug 15, a first connecting hole 16 for connecting is formed in the first connecting lug 15, the first connecting plate 11 and the second connecting plate 12 are L-shaped plates, one side plate of the first connecting plate 11 is used for being connected with the first connecting rod 3 and the second connecting rod 4, and the other side plate of the first connecting plate 11 is used for forming the first connecting lug 15. One side plate of the second connection plate 12 is used for connecting with the first connection rod 3 and the second connection rod 4, and the other side plate of the second connection plate 12 is used for forming a first connection lug 15. Preferably, a rubber member for reducing friction is arranged between the first connecting rod 3 and the first connecting column 13, and a rubber member for reducing friction is arranged between the second connecting rod 4 and the second connecting column 14, wherein the rubber member is a rubber ring, so that the smoothness of rotation is improved. The first limiting member 52 is a column, and extends between the first connecting plate 11 and the second connecting plate 12, and two ends of the first limiting member 52 are respectively fixed on the first connecting plate 11 and the second connecting plate 12.

Referring to fig. 8 to 9, the second connecting seat 2 includes a third connecting plate 21, a fourth connecting plate 22, a third connecting post 23 and a fourth connecting post 24, the third connecting plate 21 and the fourth connecting plate 22 are symmetrically disposed, the third connecting post 23 is connected between the third connecting plate 21 and the fourth connecting plate 22, the fourth connecting post 24 is connected between the third connecting plate 21 and the fourth connecting plate 22, the third connecting post 23 and the fourth connecting post 24 are disposed at a distance from each other, one end of the first connecting rod 3 is rotatably sleeved on the third connecting post 23, and one end of the second connecting rod 4 is rotatably sleeved on the fourth connecting post 24. Specifically, the third connecting plate 21 and the fourth connecting plate 22 extend outwards to form a second connecting lug 25, and a second connecting hole 26 for connection is formed in the second connecting lug 25. The third connecting plate 21 and the fourth connecting plate 22 are L-shaped plates, one side plate of the third connecting plate 21 is used for being connected with the first connecting rod 3 and the second connecting rod 4, the other side plate of the third connecting plate 21 is used for forming a second connecting lug 25, one side plate of the fourth connecting plate 22 is used for being connected with the first connecting rod 3 and the second connecting rod 4, and the other side plate of the fourth connecting plate 22 is used for forming a second connecting lug 25. Preferably, a rubber member for reducing friction is arranged between the first connecting rod 3 and the third connecting column 23, and a rubber member for reducing friction is arranged between the second connecting rod and the fourth connecting column 24, and the rubber member is a rubber ring so as to improve the smoothness of rotation. The second limiting member 51 is a column, and extends between the third connecting plate 21 and the fourth connecting plate 22, and two ends of the second limiting member 51 are respectively fixed to the third connecting plate 21 and the fourth connecting plate 22.

In summary, referring to fig. 1 to 13, a detailed description is given of the usage process of the adjustable sofa 100 according to the present utility model:

when the adjustment is needed, the backrest 20 of the sofa is pushed, the second connecting seat 2 moves relative to the first connecting seat 1 by means of deformation of the four-bar linkage, the second connecting seat 2 moves relative to the first connecting seat 1 to the first limit position, at this time, the first connecting rod 3 abuts against the first limiting piece 52, the second connecting rod 4 abuts against the second limiting piece 51, the state is shown in fig. 11, 13, 3 and 4, the second connecting seat 2 is parallel to the horizontal plane, and the backrest is in a vertical state.

When the adjustment is needed again, the backrest 20 of the sofa is pushed, the second connecting seat 2 moves relative to the first connecting seat 1 by means of the deformation of the four-bar linkage, the second connecting seat 2 moves relative to the first connecting seat 1 to the second limit position, at this time, the second connecting rod 4 abuts against the first limit piece 52, the first connecting rod 3 abuts against the second limit piece 51, the state is shown in fig. 7, 12, 1 and 2, the included angle between the installation surface of the second connecting seat and the horizontal plane is an obtuse angle, the second connecting seat 2 is inclined upwards, and the backrest is also in an inclined state.

Through combining first connecting seat 1, second connecting seat 2, first connecting rod 3, second connecting rod 4 and limit structure 5 etc. together, the one end of first connecting rod 3 and one side pin joint of first connecting seat 1, the other end of first connecting rod 3 and one side pin joint of second connecting seat 2, the one end of second connecting rod 4 and one side pin joint of first connecting seat 1, the other end of second connecting rod 4 and the opposite side pin joint of second connecting seat 2, so that first connecting seat 1, second connecting seat 2, first connecting rod 3 and second connecting rod 4 jointly form four link mechanism, make second connecting seat 2 movable relative first connecting seat 1 by means of four link mechanism's deformation, second connecting seat 2 moves relative first connecting seat 1 and has first extreme position and second extreme position, limit structure 5 locates first connecting seat 1, make second connecting seat 2 spacing in first extreme position or second extreme position by limit structure 5, because first connecting seat 1, second connecting rod 2, first connecting rod 3 and second connecting rod 4 form four link mechanism, thereby realize that two extreme positions of the relative hinge frame of four link mechanism can realize that second connecting seat 2 is very low in the relative limit position of first connecting seat 1, thereby realize that two extreme positions of the relative hinge frame is very complex, the utility model, the limit structure is very low, and the limit position of the relative hinge frame is realized, and the limit structure is very low, and the limit position of the first position is very flexible, and the limit structure is very low, and the limit structure is 10, and the limit structure is very low, and the limit position is realized.

The foregoing disclosure is merely illustrative of the principles of the present utility model, and thus, it is intended that the scope of the utility model be limited thereto and not by this disclosure, but by the claims appended hereto.

Claims (15)

1. The utility model provides a sofa translation frame, its characterized in that includes first connecting seat, second connecting seat, first connecting rod, second connecting rod and limit structure, the one end of first connecting rod with one side pin joint of first connecting seat, the other end of first connecting rod with one side pin joint of second connecting seat, one end of second connecting rod with one side pin joint of first connecting seat, the other end of second connecting rod with the opposite side pin joint of second connecting seat, so that first connecting seat, second connecting seat, first connecting rod and second connecting rod form four bar linkage jointly, borrow four bar linkage's deformation makes the second connecting seat is relative first connecting seat activity, the second connecting seat is relative first connecting seat activity and have first extreme position and second extreme position, limit structure locates first connecting seat and/or second connecting seat, borrow limit structure makes the second connecting seat limit is located first extreme position or second extreme position.

2. The sofa translating frame of claim 1 wherein the first and second connecting seats each have a mounting surface mountable to a sofa, the mounting surface of the second connecting seat being parallel to the horizontal when the second connecting seat is in the first extreme position, the second connecting seat being progressively inclined upwardly when the second connecting seat is switched from the first extreme position to the second extreme position, the angle between the mounting surface of the second connecting seat and the horizontal being an obtuse angle when the second connecting seat is in the second extreme position.

3. The sofa translating frame of claim 1, wherein the limit structure comprises a first limit member, the first limit member is disposed on the first connecting seat, the first limit member is disposed between the first connecting rod and the second connecting rod, when the second connecting seat is in the first limit position, the first connecting rod abuts against the first limit member, and when the second connecting seat is in the second limit position, the second connecting rod abuts against the first limit member.

4. The sofa translating frame of claim 1, wherein the limit structure further comprises a second limit member, the second limit member is disposed on the second connecting seat, the second limit member is disposed between the first connecting rod and the second connecting rod, when the second connecting seat is in the first limit position, the second connecting rod abuts against the second limit member, and when the second connecting seat is in the second limit position, the first connecting rod abuts against the second limit member.

5. The sofa translating frame according to claim 2, wherein the length of the first link is greater than the length of the second link, the first link being located near the second extreme position side and the second link being located near the first extreme position side.

6. The sofa translating frame of claim 5 wherein the pivot point of said first link and said second link is a first pivot point and the pivot point of said second link and said second link is a second pivot point, said first pivot point and said second pivot point being disposed in a height above said second link.

7. The sofa translating frame of claim 3, wherein said first connecting seat comprises a first connecting plate, a second connecting plate, a first connecting post and a second connecting post, said first connecting plate and said second connecting plate are symmetrically arranged, said first connecting post is connected between said first connecting plate and said second connecting plate, said second connecting post is connected between said first connecting plate and said second connecting plate, said first connecting post and said second connecting post are arranged at intervals, one end of said first connecting rod is rotatably sleeved on said first connecting post, and one end of said second connecting rod is rotatably sleeved on said second connecting post.

8. The sofa translating frame of claim 7 wherein the first connecting plate and the second connecting plate each extend outwards to form a first connecting lug, the first connecting lugs are provided with first connecting holes for connection, the first limiting members are cylinders and extend between the first connecting plate and the second connecting plate, and two ends of the first limiting members are respectively fixed on the first connecting plate and the second connecting plate.

9. The sofa translating frame of claim 7 wherein a rubber member for reducing friction is disposed between said first link and said first connecting post and a rubber member for reducing friction is disposed between said second link and said second connecting post.

10. The sofa translating frame of claim 4 wherein said second connecting seat comprises a third connecting plate, a fourth connecting plate, a third connecting post and a fourth connecting post, said third connecting plate and said fourth connecting plate being symmetrically disposed, said third connecting post being connected between said third connecting plate and said fourth connecting plate, said fourth connecting post being connected between said third connecting plate and said fourth connecting plate, said third connecting post and said fourth connecting post being disposed in spaced relation, one end of said first connecting rod being rotatably sleeved to said third connecting post, one end of said second connecting rod being rotatably sleeved to said fourth connecting post.

11. The sofa translating frame according to claim 10, wherein the third connecting plate and the fourth connecting plate each extend outwards to form a second connecting lug, and the second connecting lugs are provided with second connecting holes for connection.

12. The sofa translating frame according to claim 10, wherein a rubber member for reducing friction is arranged between the first connecting rod and the third connecting column, a rubber member for reducing friction is arranged between the second connecting rod and the fourth connecting column, the second limiting member is a column and extends between the third connecting plate and the fourth connecting plate, and two ends of the second limiting member are respectively fixed on the third connecting plate and the fourth connecting plate.

13. An adjustable sofa comprising a backrest and a sofa body, and further comprising the sofa translation frame of any one of claims 1 to 12, wherein the first connecting seat is connected to the sofa body, and the second connecting seat is connected to the backrest.

14. The adjustable sofa of claim 13 wherein said backrest is disposed vertically when said second connector is in said first limit position and said backrest is disposed obliquely when said second connector is in said second limit position.

15. An adjustable sofa comprising armrests and a sofa body, characterized in that it further comprises a sofa translation frame according to any one of claims 1 to 12, said first connecting seat being connected to said sofa body, said second connecting seat being connected to said armrests.