A sofa arm rest extension

Abstract

The utility model relates to the technical field of sofa armrest, concretely is a sofa armrest telescopic frame, including the first side plate and the second side plate of can be close to each other or far away, be equipped with the first connecting plate, the second connecting plate and the third connecting plate on the first side plate, be equipped with the first slide hole and with the first slide hole intercommunication's first clamping hole on the third connecting plate, and the first clamping hole is recessed to the first side plate side, be equipped with the fourth connecting plate, the fifth connecting plate and the sixth connecting plate on the second side plate, be equipped with the second slide hole and with the second slide hole intercommunication's second clamping hole on the sixth connecting plate, and the second clamping hole is recessed to the second side plate side, the L type through -hole of first slide hole and first clamping hole constitutes, and the L type through -hole of second slide hole and second clamping hole constitutes central symmetry arrangement, still be equipped with the first connecting rod, the second connecting rod, the first support rod and the second support rod of folding between the first side plate and the second side plate, the relative sliding of first side plate and the second side plate can fold the armrest when transporting, reduce the space occupation, reduce the logistics cost.

Description

Technical Field

[0001] This utility model relates to the field of sofa armrest technology, and in particular to a sofa armrest telescopic frame. Background Technology

[0002] The existing sofa armrests are fixed, allowing for ample transport space. As an indispensable piece of furniture in modern homes and commercial spaces, the comfort, functionality, and spatial adaptability of sofas have always been a key focus for designers and manufacturers. Sofa armrests, as an important component of the sofa, not only affect the user's comfort but also directly relate to the sofa's overall structure, appearance, and logistical efficiency.

[0003] Currently, most mainstream sofas on the market use a fixed armrest structure. This structure is typically formed by a fixed wooden or metal frame, covered with foam, fabric, or leather. Its advantages lie in its sturdy structure and mature manufacturing process. However, its inherent disadvantages are becoming increasingly apparent, especially when space utilization and logistical efficiency are emphasized: fixed armrests result in a large overall size and shape of the sofa, making effective compression or folding impossible. This occupies significant vehicle and warehouse space during bulk transportation (such as from factory to retail) or customer relocation, leading to smaller quantities transported per trip, significantly increased logistics costs, and indirectly pushing up the final selling price of the product. Both transportation and storage costs are high. In urban environments with limited living space, such as small apartments, student dormitories, or places requiring temporary changes in space function (such as temporarily compressing the sofa in the living room), sofas with fixed armrests, due to their large size and non-deformable characteristics, appear cumbersome and inflexible, failing to meet users' needs for dynamic space utilization.

[0004] Traditional fixed armrests typically only provide a leaning function and lack adjustability. Users cannot adjust the width of the armrests according to usage scenarios (such as needing wider armrests to place books, tablets, or drinks), which limits the user experience and added value of the sofa.

[0005] The root cause of the above problems lies in the fact that sofa armrests are fixed structures and cannot be adjusted in length or width as needed. Current solutions involve designing armrests that can be detached from the sofa body. While this solves the volume issue during transport, frequent disassembly and reassembly is extremely inconvenient for ordinary users, and the strength and durability of the connecting parts are difficult to guarantee, making them prone to loosening. Exposed connecting structures also affect the sofa's aesthetics.

[0006] Therefore, there is an urgent need in this field for a sofa armrest structure that is simple and reasonable in structure, easy to operate, and can significantly save space when retracted, in order to solve the defects of existing fixed armrests. Utility Model Content

[0007] The purpose of this utility model is to provide a sofa armrest structure that is simple and reasonable in structure, easy to operate, and can significantly save space when retracted.

[0008] To achieve the above objectives, this utility model adopts the following technical solution: a telescopic sofa armrest frame. It includes a first side plate and a second side plate, the second side plate being able to move closer to or further away from the first side plate; the first side plate is provided with a first connecting plate, a second connecting plate and a third connecting plate, the third connecting plate is provided with a first sliding hole and a first locking hole communicating with the first sliding hole, the first locking hole being recessed toward the first side plate; The second side plate is provided with a fourth connecting plate, a fifth connecting plate and a sixth connecting plate. The sixth connecting plate is provided with a second sliding hole and a second locking hole communicating with the second sliding hole. The second locking hole is recessed towards the second side plate. The L-shaped through hole formed by the first sliding hole and the first locking hole is arranged in a centrally symmetrical manner with the L-shaped through hole formed by the second sliding hole and the second locking hole; A first connecting rod is rotatably connected between the third connecting plate and the fourth connecting plate. One end of the first connecting rod is rotatably connected to the fourth connecting plate, and the other end is rotatably connected to the third connecting plate. One end of the first support rod is rotatably connected to the middle of the first connecting rod, and the other end of the first support rod is rotatably connected to the first connecting plate. A second connecting rod is rotatably connected between the second connecting plate and the sixth connecting plate. One end of the second connecting rod is rotatably connected to the second connecting plate, and the other end is rotatably connected to the sixth connecting plate. A second support rod is rotatably connected to the middle of the second connecting rod, and the other end of the second support rod is rotatably connected to the fifth connecting plate.

[0009] Preferably, one end of the first connecting rod is rotatably connected to the fourth connecting plate via a first pin, and the other end is rotatably connected to the third connecting plate via a second pin; the second pin can slide along the first sliding hole; one end of the first support rod is rotatably connected to the first connecting plate via a third pin, and the other end is rotatably connected to the first connecting rod via a fourth pin.

[0010] Preferably, one end of the second connecting rod is rotatably connected to the second connecting plate via a fifth pin, and the other end is rotatably connected to the sixth connecting plate via a sixth pin; one end of the second support rod is rotatably connected to the fifth connecting plate via a seventh pin, and the other end is rotatably connected to the middle of the second connecting rod via an eighth pin; the sixth pin can slide along the second sliding hole.

[0011] Preferably, the first sliding hole and the second sliding hole form a certain angle with the side plate to which they are located, and the vertex of the angle is located on the side opposite to the first locking hole and the second locking hole.

[0012] Preferably, the first support rod and the second support rod are rotatably connected to the midpoints of the first connecting rod and the second connecting rod, respectively.

[0013] Preferably, the first and second locking holes are used to lock the second and sixth pins when the telescopic frame is deployed.

[0014] Preferably, the first connecting plate, the second connecting plate, and the third connecting plate are all integrally pressed and formed from the first side plate; the fourth connecting plate, the fifth connecting plate, and the sixth connecting plate are all integrally pressed and formed from the second side plate, and the connecting plates on the first side plate and the second side plate are all installed facing the other side plate.

[0015] Preferably, a tension spring is also connected between the first side plate and the second side plate, with the two ends of the tension spring connected to the opposite ends of the first side plate and the second side plate, respectively.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows: The sofa armrest telescopic frame of this utility model can fold the armrest part during transportation, saving transportation space; through the relative sliding of the first side plate and the second side plate, the armrest part can be retracted and folded during transportation, greatly reducing the space occupied and reducing logistics costs.

[0017] The first and second support rods are rotatably connected to the middle of the first and second connecting rods, respectively, to form a stable triangular support structure, ensuring strong stability and safe use of the handrail when it is in the unfolded state.

[0018] By setting an L-shaped through hole (a combination of sliding hole and locking hole), the second and sixth pins can slide along the sliding hole to the locking hole position during the extension and retraction process to achieve automatic locking and prevent the handrail from retracting unexpectedly.

[0019] The connecting plates on the first and second side plates are symmetrically arranged, and together with the double connecting rods and support rods, the extension and retraction process is smooth and stable, and the structure is coordinated and consistent.

[0020] The side panels and connecting plates are integrally press-formed, reducing the number of parts and assembly steps, improving production efficiency and reducing manufacturing costs.

[0021] The design of the tension spring increases the stability of the telescopic frame when it is folded up. Users need to overcome the force of the tension spring to unfold the telescopic frame, thus preventing accidental unfolding. In the process of moving from the unfolded state to the folded state, the user first pulls the side panel to unlock it and then pushes the side panel back up. The direction of the tension spring is opposite to the direction of pulling the side panel outward to unlock it, so it will not affect the stability of the unfolded state. Attached Figure Description

[0022] Figure 1 This utility model provides a schematic diagram of the storage state of a sofa armrest telescopic frame; Figure 2 This utility model provides a schematic diagram of the first side panel structure of a sofa armrest telescopic frame; Figure 3This utility model provides a schematic diagram of the second side panel structure of a sofa armrest telescopic frame; Figure 4 A schematic diagram of the pin structure of a sofa armrest telescopic frame is provided for this utility model; Figure 5 This utility model provides a schematic diagram of the unfolded state of a sofa armrest telescopic frame; Figure 6 This utility model provides a schematic diagram of a sofa armrest telescopic frame in a spring-loaded storage state; Figure 7 This utility model provides a schematic diagram of the extended state of a sofa armrest telescopic frame with tension springs; Explanation of reference numerals in the attached drawings: 1. First side plate; 11. First connecting plate; 111. Third pin hole; 12. Second connecting plate; 121. Fifth pin hole; 13. Third connecting plate; 14. First sliding hole; 15. First locking hole; 16. First hook; 2. Second side plate; 21. Fourth connecting plate; 211. First pin hole; 22. Fifth connecting plate; 221. Seventh pin hole; 23. Sixth connecting plate; 24. Second sliding hole; 25. Second locking hole; 26. Second hook; 3. First connecting rod; 31. First pin; 32. Second pin; 4. First support rod; 41. Third pin; 42. Fourth pin; 5. Second connecting rod; 51. Fifth pin; 52. Sixth pin; 6. Second support rod; 61. Seventh pin; 62. Eighth pin; 7. Tension spring; 100. Fixed end; 101. Shaft; 102. Movable end. Detailed Implementation

[0023] To address the problems in the background art, this utility model provides a sofa armrest telescopic frame; as a sofa component, the sofa armrest telescopic frame increases the armrest width and allows for the placement of items when extended, and saves space and facilitates transportation when retracted.

[0024] like Figure 1As shown, the width direction of the telescopic frame is the X-axis, which is also the direction in which it can be extended and retracted, and the length direction is the Y-axis. The sofa armrest telescopic frame includes a first side plate 1 and a second side plate 2 that can move closer to or further away from the first side plate 1. The first side plate 1 is integrally pressed with a first connecting plate 11, a second connecting plate 12, and a third connecting plate 13, and the first connecting plate 11, the second connecting plate 12, and the third connecting plate 13 are all installed facing the second side plate 2. The first connecting plate 11 and the second connecting plate 12 are located at both ends of the first side plate 1, and the third connecting plate 13 is located in the middle of the first side plate 1. The third connecting plate 13 has a first sliding hole 14 in the upper middle part, and the length direction of the first sliding hole 14 is the length direction of the first side plate 1. One end of the first sliding hole 14 has a first locking hole 15 that communicates with the first sliding hole 14, and the first locking hole 15 is recessed towards the first side plate 1. The second side plate 2 includes an integrally pressed fourth connecting plate 21 and a fifth connecting plate. The fourth connecting plate 21, the fifth connecting plate 22, and the sixth connecting plate 23 are all installed facing one side of the first side plate 1. The fourth connecting plate 21 and the fifth connecting plate 22 are located at both ends of the second side plate 2, and the sixth connecting plate 23 is located in the middle of the second side plate 2. The upper middle part of the sixth connecting plate 23 is provided with a second sliding hole 24. The length direction of the second sliding hole 24 is the length direction of the second side plate 2. One end of the second sliding hole 24 is provided with a second locking hole 25 communicating with the second sliding hole 24. The second locking hole 25 is recessed towards the second side plate 2. The L-shaped through hole formed by the first sliding hole 14 and the first locking hole 15 is centrally symmetrical with the L-shaped through hole formed by the second sliding hole 24 and the second locking hole 25. The central symmetry point is the midpoint of the line connecting the center of the first side plate 1 and the center of the second side plate 2. The first sliding hole 14 and the second sliding hole 24 form a certain angle with their respective side plates, and the vertex of the angle is on the side opposite to the first locking hole 15 and the second locking hole 25. A first connecting rod 3 is rotatably connected between the third connecting plate 13 and the fourth connecting plate 21. One end of the first connecting rod 3 is rotatably connected to the fourth connecting plate 21 via a first pin 31, and the other end is rotatably connected to the third connecting plate 13 via a second pin 32. The second pin 32 can slide along the first sliding hole 14 as the first connecting rod 3 rotates. A first support rod 4 is rotatably connected to the middle of the first connecting rod 3. One end of the first support rod 4 is rotatably connected to the first connecting plate 11 via a third pin 41, and the other end of the first support rod 4 is rotatably connected to the middle of the first connecting rod 3 via a fourth pin 42. Both ends of the first support rod 4 are provided with through holes for the pin to pass through. Both ends and the middle of the first connecting rod 3 are provided with through holes for the pin to pass through. A second connecting rod 5 is rotatably connected between the second connecting plate 12 and the sixth connecting plate 23; one end of the second connecting rod 5 is rotatably connected to the second connecting plate 12 via a fifth pin 51; the other end of the second connecting rod 5 is rotatably connected to the sixth connecting plate 23 via a sixth pin 52, and the sixth pin 52 can slide along the second sliding hole 24 as the second connecting rod 5 rotates; a second support rod 6 is rotatably connected to the middle of the second connecting rod 5, one end of the second support rod 6 is rotatably connected to the fifth connecting plate 22 via a seventh pin 61, and the other end of the second support rod 6 is rotatably connected to the middle of the second connecting rod 5 via an eighth pin 62; both ends and the middle of the second connecting rod 5 are provided with through holes for the pins to pass through, and both ends of the second support rod 6 are provided with through holes for the pins to pass through.

[0025] like Figure 2 The diagram shows the structure of the first side plate 1. The first side plate 1 includes a first connecting plate 11, a second connecting plate 12, and a third connecting plate 13 integrally cut from a rectangular side plate at intervals. The first connecting plate 11, the second connecting plate 12, and the third connecting plate 13 face the second side plate 2. The first connecting plate 11 has a third pin hole 111 for passing through a third pin 41. The second connecting plate 12 has a fifth pin hole 121 for passing through a fifth pin 51. The first sliding hole 14 forms an angle β with the plane of the first side plate 1. The first locking hole 15 communicates with the first sliding hole 14 and is located at the end opposite to the vertex of the β angle.

[0026] like Figure 3The diagram shows the structure of the second side plate 2. The second side plate 2 includes a fourth connecting plate 21, a fifth connecting plate 22, and a sixth connecting plate 23, integrally cut from a rectangular side plate at intervals. The fourth connecting plate 21, fifth connecting plate 22, and sixth connecting plate 23 face the first side plate 1. The fourth connecting plate 21 has a first pin hole 211 for passing through a first pin 31. The fifth connecting plate 22 has a seventh pin hole 221 for passing through a seventh pin 61. The angle between the second sliding hole 24 and the plane of the second side plate 2 is β. The second locking hole 25 communicates with the second sliding hole 24 and is located at the end opposite to the vertex of angle θ. Angle θ and angle β are equal in size and opposite in vertex, making the first sliding hole 14 and the first locking hole 15 centrally symmetrical with the second sliding hole 24 and the second locking hole 25. β and θ range from 4-10°. The tilt angle allows for a smaller width in the X direction during contraction, freeing up more space.

[0027] like Figure 4 The diagram shown is a structural schematic of the pin involved in this utility model. The first pin 31 to the eighth pin 62 can all adopt this structure, including a fixed end 100, a shaft portion 101 and a movable end 102; the shaft portion 101 passes through the corresponding pin hole and then the movable end 102 is installed.

[0028] like Figure 6 , Figure 7 As shown, as a further improvement, a tension spring 7 is also connected between the first side plate 1 and the second side plate 2, with both ends of the tension spring 7 connected to the opposite ends of the first side plate 1 and the second side plate 2, respectively. Figure 6 , Figure 7 The diagrams show the telescopic frame in its retracted and extended states, respectively. A first hook 16 is provided on the first side plate 1, and a second hook 26 is provided on the second side plate 2. The tension spring 7 hooks the first hook 16 and the second hook 26 at both ends. The first hook 16 is located between the second connecting plate 12 and the third connecting plate 13 and bends towards the second connecting plate 12. The second hook 26 is located between the sixth connecting plate 23 and the fourth connecting plate 21 and bends towards the fourth connecting plate 21. The tension spring 7 further ensures the stability of the telescopic frame. During the extended state, the first side plate 1 or the second side plate 2 needs to be pulled to overcome the force of the tension spring 7 and move away from each other. In the retracted state, the tension spring 7 ensures stable retraction and prevents easy unfolding.

[0029] This utility model of a sofa armrest telescopic frame includes an extended state and a retracted state during use. The extended state is the transition from the retracted state to a stable, usable state. The extended state without a tension spring is as follows: Figure 5 As shown. (Refer to...) Figure 6 , Figure 7For example, when it is necessary to restore the sofa armrests from their transport or storage state to their normal usable width, they can be unfolded. Taking the second side panel 2 away from the main body of the sofa as an example, firstly, hold the second side panel 2 with both hands and pull it away from the first side panel 1. During the pulling process, the tension of the tension spring 7 needs to be overcome. At this time, the second pin 32 and the sixth pin 52 move along the first sliding hole 14 and the second sliding hole 24 respectively towards the first locking hole 15 and the second locking hole 25. When the shafts of the second pin 32 and the sixth pin 52 are respectively locked into the first locking hole 15 and the second locking hole 25. At this time, the distance between the first side plate 1 and the second side plate 2 reaches its maximum. During this process, the first connecting rod 3, which connects the third connecting plate 13 and the fourth connecting plate 21, begins to rotate, and the second pin 32 on it slides in the first sliding hole 14 from the side away from the first locking hole 15 to the side closer to the first locking hole 15. At the same time, the second connecting rod 5, which connects the second connecting plate 12 and the sixth connecting plate 23, also rotates synchronously, and the sixth pin 52 on it slides in the opposite direction in the second sliding hole 24 towards the second locking hole 25. Since the first sliding hole 14 and the first locking hole 15 are centrally symmetrically arranged with the second sliding hole 24 and the second locking hole 25, this process ensures that the first side plate 1 and the second side plate 2 unfold smoothly and synchronously without jamming. While the first connecting rod 3 and the second connecting rod 5 are moving, the first support rod 4 and the second support rod 6 also rotate around their connection points with the corresponding side plates, gradually spreading the first connecting rod 3 and the second connecting rod 5 to form a stable triangular structure. The triangular structure is the key structure for the stable unfolding of the handrail. When the first side panel 1 and the second side panel 2 are stretched to their maximum width, a distinct positioning sensation will be felt: at this point, the second pin 32 slides precisely into the first locking hole 15, which connects to the end of the first sliding hole 14, while the sixth pin 52 also slides into the second locking hole 25. The locking holes 15 and 25, recessed into their respective side panels, will firmly hold the corresponding pins in place, preventing the handrail from accidentally retracting. Thus, as... Figure 7 The diagram shown is a schematic of the unfolded process. The handrail is in a stable unfolded state, and you can safely lean on it or place items on it.

[0030] The contraction process is from Figure 7 The unfolded state becomes Figure 6The sofa is compactly folded up, allowing for retraction when the size needs to be reduced for transport or to save space. Taking the second connecting plate 12 away from the main body of the sofa as an example, first, hold the second connecting plate 12 with both hands and pull it away from the first side plate 1, causing the second pin 32 and the sixth pin 52 to disengage from the first locking hole 15 and the second locking hole 25, respectively. After disengaging from the first locking hole 15, the second pin 32 returns to the track of the first sliding hole 14; simultaneously, the sixth pin 52 disengages from the second locking hole 25 and returns to the second sliding hole 24. After unlocking, continue to push the second side plate 2 towards the first side plate 1, while the tension of the tension spring 7 also helps the second side plate 2 move closer to the first side plate 1, completing the folding process. As the second side plate 2 moves closer to the first side plate 1, the first connecting rod 3 and the second connecting rod 5 rotate inward around their connection points with the corresponding side plates, namely the first pin 31 and the fifth pin 51, respectively. This causes the second pin 32 and the sixth pin 52 to slide along the first sliding hole 14 and the second sliding hole 24 in a direction away from the first locking hole 15 and the second locking hole 25. Simultaneously, the first support rod 4 and the second support rod 6 also retract with the rotation of the first connecting rod 3 and the second connecting rod 5, folding up the original triangular structure and reducing the overall thickness of the telescopic frame. When the first side plate 1 and the second side plate 2 are pushed to their closest position, all connecting rods, support rods, and pins are tightly retracted, and the handrail width reaches its minimum, i.e., as... Figure 6 As shown, the telescopic frame, when fully retracted, has a significantly reduced volume, greatly facilitating subsequent packaging, transportation, or storage.

[0031] This utility model's sofa armrest telescopic frame allows the armrest section to be folded during transportation, saving transport space. Through the relative sliding of the first side plate 1 and the second side plate 2, the armrest section can be retracted and folded during transport, significantly reducing space occupation and lowering logistics costs. The first support rod 4 and the second support rod 6 are rotatably connected to the middle of the first connecting rod 3 and the second connecting rod 5, respectively, forming a stable triangular support structure that ensures strong stability and safe use of the armrest in its unfolded state. Through an L-shaped through-hole combining sliding holes and locking holes, the second pin 32 and the sixth pin 52 can slide along the corresponding sliding holes to the locking hole position during telescopic movement to achieve locking, preventing accidental retraction of the armrest. The connecting plates on the first side plate 1 and the second side plate 2 are symmetrically arranged, working in conjunction with the double connecting rods and support rods to ensure a smooth and stable telescopic process with a consistent structure. The side plates and connecting plates are integrally press-formed, reducing the number of parts and assembly processes, improving production efficiency, and lowering manufacturing costs.

Claims

1. A sofa arm rest extension comprising: It includes a first side plate (1) and a second side plate (2), the second side plate (2) being able to move closer to or further away from the first side plate (1); the first side plate (1) is provided with a first connecting plate (11), a second connecting plate (12) and a third connecting plate (13), the third connecting plate (13) is provided with a first sliding hole (14) and a first locking hole (15) communicating with the first sliding hole (14), the first locking hole (15) being recessed toward the first side plate (1); The second side plate (2) is provided with a fourth connecting plate (21), a fifth connecting plate (22) and a sixth connecting plate (23). The sixth connecting plate (23) is provided with a second sliding hole (24) and a second locking hole (25) communicating with the second sliding hole (24). The second locking hole (25) is recessed towards the second side plate (2). The L-shaped through hole formed by the first sliding hole (14) and the first locking hole (15) is arranged in a centrally symmetrical manner with the L-shaped through hole formed by the second sliding hole (24) and the second locking hole (25); A first connecting rod (3) is rotatably connected between the third connecting plate (13) and the fourth connecting plate (21). One end of the first connecting rod (3) is rotatably connected to the fourth connecting plate (21), and the other end is rotatably connected to the third connecting plate (13). One end of the first support rod (4) is rotatably connected to the middle of the first connecting rod (3), and the other end of the first support rod (4) is rotatably connected to the first connecting plate (11). A second connecting rod (5) is rotatably connected between the second connecting plate (12) and the sixth connecting plate (23). One end of the second connecting rod (5) is rotatably connected to the second connecting plate (12), and the other end is rotatably connected to the sixth connecting plate (23). A second support rod (6) is rotatably connected in the middle of the second connecting rod (5), and the other end of the second support rod (6) is rotatably connected to the fifth connecting plate (22).

2. The sofa arm ottoman of claim 1, wherein: One end of the first connecting rod (3) is rotatably connected to the fourth connecting plate (21) via the first pin (31), and the other end is rotatably connected to the third connecting plate (13) via the second pin (32); the second pin (32) can slide along the first sliding hole (14); one end of the first support rod (4) is rotatably connected to the first connecting plate (11) via the third pin (41), and the other end is rotatably connected to the first connecting rod (3) via the fourth pin (42).

3. The sofa arm ottoman of claim 1, wherein: One end of the second connecting rod (5) is rotatably connected to the second connecting plate (12) via the fifth pin (51), and the other end is rotatably connected to the sixth connecting plate (23) via the sixth pin (52); one end of the second support rod (6) is rotatably connected to the fifth connecting plate (22) via the seventh pin (61), and the other end is rotatably connected to the middle part of the second connecting rod (5) via the eighth pin (62); the sixth pin (52) can slide along the second sliding hole (24).

4. The sofa arm ottoman of claim 1, wherein: The first sliding hole (14) and the second sliding hole (24) form a certain angle with the side plate on which they are located, and the vertex of the angle is located on the side opposite to the first locking hole (15) and the second locking hole (25).

5. The sofa arm ottoman of claim 1, wherein: The first support rod (4) and the second support rod (6) are rotatably connected to the midpoints of the first connecting rod (3) and the second connecting rod (5), respectively.

6. The sofa arm ottoman of claim 1, wherein: The first locking hole (15) and the second locking hole (25) are used to lock the second pin (32) and the sixth pin (52) when the telescopic frame is deployed.

7. The sofa arm ottoman of claim 1, wherein: The first connecting plate (11), the second connecting plate (12) and the third connecting plate (13) are all integrally pressed and formed on the first side plate (1); the fourth connecting plate (21), the fifth connecting plate (22) and the sixth connecting plate (23) are all integrally pressed and formed on the second side plate (2), and the connecting plates on the first side plate (1) and the second side plate (2) are all installed facing the other side plate.

8. The sofa arm ottoman of any of claims 1-7, wherein: A tension spring (7) is also connected between the first side plate (1) and the second side plate (2). The two ends of the tension spring (7) are respectively connected to the opposite ends of the first side plate (1) and the second side plate (2).

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