Functional sofa

Abstract

The invention discloses a functional sofa. The functional sofa at least comprises a bottom supporting frame, a backrest supporting frame and a headrest supporting frame, a matching piece used for being connected with the backrest supporting frame is arranged in the bottom supporting frame, and the headrest supporting frame is connected with the backrest supporting frame through an angle adjusting assembly. A sofa bottom frame stretching function frame is arranged in the bottom supporting frame; a lifting assembly for lifting the headrest support frame is also arranged in the backrest support frame; according to the scheme, the whole sofa product has a cushion stretching function, a backrest lifting function and a headrest angle adjusting function. And the sofa can be adjusted according to different body type requirements, so that the fatigue of people is relieved, people are healthy and pleasant, and the use quality and comfortable experience of the sofa are improved.

Description

Technical Field

[0001] The invention relates to the technical field of soft furniture accessories, in particular to a functional sofa. Background Art

[0002] There are various types and styles of sofas. Both the function and the appearance are constantly meeting the needs of people's daily life and work. With the use of stretchable functional sofas, how to adapt to the needs of different groups of people is a topic facing professional and technical personnel. There are different heights, fatness, and weights in the family population, and a single-function sofa product cannot meet the needs of different body characteristics for the comfort of sofa products. Some members of the family still cannot experience the comfort of the sofa. Summary of the invention

[0003] The purpose of the present invention is to provide a functional sofa in view of the above-mentioned shortcomings, so as to solve the problem that the single-function sofa products in the prior art cannot meet the needs of different body shapes for the comfort of sofa products.

[0004] The present invention is achieved through the following scheme:

[0005] A functional sofa comprises at least a bottom support frame, a back support frame and a headrest support frame; the bottom support frame is provided with a matching piece for connecting with the back support frame, and the headrest support frame is connected with the back support frame via an angle adjustment component; the bottom support frame is provided with a sofa bottom frame extension function frame; the back support frame is also provided with a lifting component for lifting the headrest support frame.

[0006] Based on the structure of the above-mentioned functional sofa, the bottom support frame includes a first side panel, a second side panel and a back panel; the first side panel and the second side panel are symmetrically arranged at the ends of the back panel, and bottom support rods are arranged at the bottom positions of the first side panel and the second side panel, and a cavity structure for supporting the extension functional frame of the sofa bottom frame is formed by the first side panel, the second side panel and the back panel.

[0007] Based on the structure of the above-mentioned functional sofa, the matching piece is arranged at the rear side of the extension functional frame of the sofa bottom frame, and the matching piece includes a connecting piece and a connecting groove. The connecting groove is connected to the backrest support frame, and the shape structure of the connecting piece matches the connecting groove, and the connecting piece can be inserted into the connecting groove.

[0008] Based on the structure of the above-mentioned functional sofa, a pair of spring pieces are also provided in the connecting groove, and a locking hole cooperating with the spring piece is provided in the connecting groove. When the connecting piece is inserted into the connecting groove, the spring piece enters the locking hole, so that the connecting groove and the connecting piece are connected as a whole.

[0009] Based on the structure of the above-mentioned functional sofa, the backrest support frame includes a first panel surface, a second panel surface, a third panel surface and a fourth panel surface; the first panel surface and the second panel surface are respectively vertically arranged on both sides of the third panel surface, and the fourth panel surface is arranged at the top position of the third panel surface; the first panel surface and the second panel surface are both provided with a reinforcing support plate, and the reinforcing support plate is arranged on the contact portion between the mating piece and the first panel surface and the second panel surface.

[0010] Based on the structure of the above-mentioned functional sofa, the lifting assembly includes a support base, a guide column, a power motor, a connecting top plate and a lifting plate; the support base is provided with a support cavity for accommodating the guide column, the guide column is arranged in the support cavity, the power motor is arranged horizontally in the support base, and the connecting top plate is arranged above the guide column; the guide column is provided with a screw assembly, the lifting plate is connected to the screw assembly, and the screw assembly is connected to the power motor, and under the action of the power motor, the lifting plate can be driven to move through the screw assembly.

[0011] Based on the structure of the above-mentioned functional sofa, the guide columns are provided with two, the connecting top plate is provided between the two guide columns, the guide columns are provided with a hollow structure, the screw rod assembly is provided in the guide columns and the supporting base; the screw rod assembly comprises a rotating screw rod and a connecting nut; the connecting nut is sleeved on the rotating screw rod, a first bearing is provided at the top position of the inner side of the guide column, a second bearing is provided on the connecting base, the rotating screw rod is provided between the first bearing and the second bearing, a gear assembly is also provided on the rotating screw rod, the rotating screw rod is meshed with the output end of the power motor through the gear assembly, and the rotating screw rod is driven to rotate by the action of the power motor.

[0012] Based on the structure of the above-mentioned functional sofa, a sliding sleeve is arranged on the lifting plate, the sliding sleeve is connected to the connecting nut, a plurality of guide grooves are arranged on the guide column, the guide grooves are arranged along the length direction of the guide column, and a plurality of guide protrusions cooperating with the guide grooves are arranged on the sliding sleeve.

[0013] Based on the structure of the above-mentioned functional sofa, the angle adjustment component includes a support sleeve, an adjustment rod, a first connecting piece, a second connecting piece and a fixing part; the adjustment rod is sleeved in the support sleeve, and a connecting ear matching with the first connecting piece is provided on the side wall of the support sleeve, and the first connecting piece is hinged to the connecting ear; the second connecting piece includes a first support plate and a second support plate; the first support plate and the second support plate are arranged at a predetermined angle, and the length of the second support plate is not less than the length of the first support plate; the end of the first support plate, the end of the second support plate and the connection between the first support plate and the second support plate are respectively provided with a first connecting hole, a second connecting hole and a third connecting hole; the fixing part is respectively provided with a first matching hole and a second matching hole.

[0014] Based on the structure of the above-mentioned functional sofa, the first connecting hole is hinged to the end of the first connecting plate away from the connecting ear; the second connecting hole is hinged to the end of the adjusting rod and the first matching hole of the fixing part; the third connecting hole is hinged to the second matching hole; and finally the supporting sleeve, the adjusting rod, the first connecting plate, the second connecting plate and the fixing part form a connecting rod mechanism that can move relative to each other.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In this solution, by setting up a sofa bottom frame extension function frame, the seat cushion position can be adjusted, the angle of the headrest support frame can be adjusted through the angle adjustment component, and the height of the headrest can be adjusted through the lifting component. On the whole, the sofa of this solution can be adaptively adjusted according to the needs of different human bodies, making it more comfortable for human bodies to use.

[0017] 2. In this solution, the lifting assembly can drive the angle adjustment assembly to lift as a whole, and the angle adjustment assembly is provided with a fixing part connected to the headrest. The height adjustment and pitch angle adjustment of the headrest can be achieved through the cooperation of the lifting assembly and the angle adjustment assembly; the entire mechanism can be adjusted in a targeted manner according to the different heights and pitch angles of the human neck, making it more comfortable when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall internal structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the cooperation between the lifting assembly and the angle adjustment assembly of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the lifting assembly of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the angle adjustment component of the present invention at a first viewing angle;

[0023] Figure 6 is a schematic diagram of the three-dimensional structure of the angle adjustment component of the present invention at a second viewing angle;

[0024] Description of the drawings: 1. Lifting assembly; 2. Angle adjustment assembly; 4. Bottom support frame; 5. Backrest support frame; 6. Headrest support frame; 7. Sofa bottom frame extension function frame; 11. Support base; 12. Guide column; 13. Power motor; 14. Connecting top plate; 15. Lifting plate; 16. Support cavity; 17. Sliding sleeve; 18. Rotating screw rod; 19. Connecting nut; 110. First bearing; 111. Second bearing; 112. Gear assembly; 113. First connecting piece; 114. Extension plate; 115. Second connecting piece; 116. First fixing seat; 117. First sleeve; 118. Second sleeve; 119. Second fixing seat; 21. Support sleeve; 22. Adjustment rod; 23. First connecting piece; 24. Second connecting piece; 2 5. Fixing part; 26. Connecting ear; 27. First avoidance part; 28. Second avoidance part; 231. First support plate; 232. Second support plate; 233. First connection hole; 234. Second connection hole; 235. Third connection hole; 251. First matching hole; 252. Second matching hole; 253. Fixed support tube; 254. First support sheet; 255. Second support sheet; 256. Reinforcing rod; 31. Insert rod; 32. Headrest connecting sheet; 41. First side panel; 42. Second side panel; 43. Back panel; 44. Bottom support rod; 45. Connecting sheet; 46. Connecting groove; 47. Spring sheet; 48. Locking hole; 51. First board surface; 52. Second board surface; 53. Third board surface; 54. Fourth board surface; 55. Strengthening support plate. DETAILED DESCRIPTION

[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0026] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0027] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0029] Example 1

[0030] like Figure 1 to Figure 6 As shown, the present invention provides a technical solution:

[0031] A functional sofa, which at least includes but is not limited to a bottom support frame 4, a back support frame 5 and a headrest support frame 6; the bottom support frame 4 is provided with a matching piece for connecting with the back support frame 5, and the headrest support frame 6 is connected with the back support frame 5 through an angle adjustment component; a sofa bottom frame extension function frame 7 is provided in the bottom support frame 4; and a lifting component for lifting the headrest support frame 6 is also provided in the back support frame 5.

[0032] As an example, in this solution, by setting up a sofa bottom frame extension function frame 7, the seat cushion position can be adjusted, the angle of the headrest support frame 6 can be adjusted through an angle adjustment component, and the height of the headrest can be adjusted through a lifting component. On the whole, the sofa of this solution can be adaptively adjusted according to the needs of different human bodies, making it more comfortable for the human body to use.

[0033] As an example, the bottom support frame 4 may include a first side panel 41, a second side panel 42 and a back panel 43; the first side panel 41 and the second side panel 42 are symmetrically arranged at the ends of the back panel 43, and a bottom support rod 44 is arranged at the bottom position of the first side panel 41 and the second side panel 42, and a cavity structure for supporting the sofa bottom frame extension functional frame 7 is formed by the first side panel 41, the second side panel 42 and the back panel 43.

[0034] Based on the above structure, a cavity structure for supporting the sofa bottom frame extension functional frame 7 can be formed by the first side panel 41, the second side panel 42 and the back panel 43, so that the sofa bottom frame extension functional frame 7 can realize the function of seat cushion adjustment in the cavity structure. The sofa bottom frame extension functional frame 7 in this scheme is the existing technology, and this scheme is to improve it, so it will not be repeated here.

[0035] As an example, the matching part is arranged at the rear side of the sofa bottom frame extension function frame 7, and the matching part may include a connecting piece 45 and a connecting groove 46. The connecting groove 46 is connected to the backrest support frame 5. The shape structure of the connecting piece 45 matches the connecting groove 46, and the connecting piece 45 can be inserted into the connecting groove 46.

[0036] A pair of spring pieces 47 are also provided in the connecting groove 46, and a locking hole 48 cooperating with the spring piece 47 is provided in the connecting groove 46. When the connecting piece 45 is inserted into the connecting groove 46, the spring piece 47 enters the locking hole 48, so that the connecting groove 46 and the connecting piece 45 are connected as a whole.

[0037] Based on the above structure, the backrest support frame 5 can be quickly disassembled and assembled by setting the spring piece 47, which reduces the overall assembly difficulty. Usually, the connecting piece 45 and the connecting groove 46 are inserted to connect the backrest support frame 5 and the sofa bottom frame extension function frame 7 as a whole, which can increase the locking area of ​​the connection and prevent the backrest support frame 5 from loosening during later use, thereby affecting the service life of the sofa.

[0038] As an example, the backrest support frame 5 includes a first plate surface 51, a second plate surface 52, a third plate surface 53 and a fourth plate surface 54; the first plate surface 51 and the second plate surface 52 are respectively vertically arranged on both sides of the third plate surface, and the fourth plate surface 54 is arranged at the top position of the third plate surface; the first plate surface 51 and the second plate surface 52 are both provided with a reinforcing support plate 55, and the reinforcing support plate 55 is arranged on the contact part between the mating part and the first plate surface 51 and the second plate surface 52.

[0039] Based on the above structure, by setting the first plate surface 51, the second plate surface 52, the third plate surface 53 and the fourth plate surface 54, a semi-enclosed frame structure with openings on the bottom and the front side wall is formed. The bottom is convenient for connection with the matching parts, and the front side wall reserves space for filling the elastic medium.

[0040] As an example, the lifting assembly 1 may include a support base 11, a guide column 12, a power motor 13, a connecting top plate 14 and a lifting plate 15; the support base 11 is provided with a support cavity 16 for accommodating the guide column 12, the guide column 12 is arranged in the support cavity 16, the power motor 13 is horizontally arranged in the support base 11, and the connecting top plate 14 is arranged above the guide column 12; a screw assembly is arranged in the guide column 12, the lifting plate 15 is connected to the screw assembly, and the screw assembly is connected to the power motor 13. Under the action of the power motor 13, the lifting plate 15 can be driven to move through the screw assembly.

[0041] Based on the above structure, when the headrest needs to be raised or lowered, the power motor 13 is activated, thereby driving the screw assembly to move, so that the lifting plate 15 moves along the length direction of the guide column 12, and finally accurately drives the angle adjustment mechanism to move.

[0042] As an example, two guide columns 12 are provided, the connecting top plate 14 is provided between the two guide columns 12, the guide columns 12 are hollow, and the screw rod assembly is provided in the guide columns 12 and the supporting base 11;

[0043] The screw assembly may include a rotating screw 18 and a connecting nut 19; the connecting nut 19 is sleeved on the rotating screw 18, a first bearing 110 is provided at the top position of the inner side of the guide column 12, a second bearing 111 is provided on the connecting base, the rotating screw 18 is provided between the first bearing 110 and the second bearing 111, and a gear assembly 112 is also provided on the rotating screw 18, the rotating screw 18 is meshed with the output end of the power motor 13 through the gear assembly 112, and the rotating screw 18 is driven to rotate by the action of the power motor 13;

[0044] A sliding sleeve 17 is provided on the lifting plate 15 , and the sliding sleeve 17 is connected to the connecting nut 19 . A plurality of guide grooves are provided on the guide column 12 , and the guide grooves are provided along the length direction of the guide column 12 . A plurality of guide protrusions cooperating with the guide grooves are provided on the sliding sleeve 17 .

[0045] Based on the above structure, when the rotating screw 18 is driven to rotate, the connecting nut 19 will be driven to rotate. At this time, since the sliding sleeve 17 is restricted in the guide groove by the guide protrusion, the sliding sleeve 17 can only be driven to move along the length direction of the guide column 12 to realize the entire lifting and lowering of the lifting plate 15.

[0046] As an example, a first connecting member 113 is provided on both sides of the lifting plate, an extension plate 114 is provided on both sides of the connecting top plate 14, and a second connecting member 115 is provided on the extension plate 114. The positions of the first connecting member 113 and the second connecting member 115 are matched, and the first connecting member 113 and the second connecting member 115 form a connecting portion for connecting the angle adjustment component 2.

[0047] The angle adjustment assembly 2 is inserted into the first connecting member 113 and the second connecting member 115 in a plug-in manner;

[0048] Based on the above structure, since the positions of the first connecting member 113 and the second connecting member 115 match, when the angle adjustment component 2 is inserted into the first connecting member 113 and the second connecting member 115, the verticality of the angle adjustment component 2 can always be maintained and will not deform during movement.

[0049] As an example, the first connecting member 113 may include a first fixed seat 116 and a first sleeve 117; the first fixed seat 116 is connected to the side wall of the lifting plate by bolts, and the first sleeve 117 is fixedly arranged in the first fixed seat 116; the second connecting member 115 may be a second sleeve 118 and a second fixed seat 119, the second fixed seat 119 is vertically arranged on the extension plate 114, and the second sleeve 118 is vertically arranged on the second fixed seat 119.

[0050] Based on the above structure, by adopting the form of sleeves for the fixing portions 25 of the first connecting member 113 and the second connecting member 115 , the assembly of the entire angle adjustment assembly 2 is facilitated.

[0051] As an example, the angle adjustment assembly 2 may include a support sleeve 21, an adjustment rod 22, a first connecting piece 23, a second connecting piece 24 and a fixing portion 25; the adjustment rod 22 is sleeved in the support sleeve 21, and a connecting ear 26 that cooperates with the first connecting piece 23 is provided on the side wall of the support sleeve 21, and the first connecting piece 23 is hinged to the connecting ear 26;

[0052] The second connecting piece 24 includes a first supporting plate 231 and a second supporting plate 232; the first supporting plate 231 and the second supporting plate 232 are arranged at a predetermined angle, and the length of the second supporting plate 232 is not less than the length of the first supporting plate 231; a first connecting hole 233, a second connecting hole 234 and a third connecting hole 235 are respectively arranged at the end of the first supporting plate 231, the end of the second supporting plate 232 and the connection between the first supporting plate 231 and the second supporting plate 232; a first matching hole 251 and a second matching hole 252 are respectively arranged on the fixing portion 25;

[0053] The first connecting hole 233 is hinged to the end of the first connecting piece 23 away from the connecting ear 26; the second connecting hole 234 is hinged to the end of the adjusting rod 22 and the first matching hole 251 of the fixing part 25; the third connecting hole 235 is hinged to the second matching hole; finally, the supporting sleeve 21, the adjusting rod 22, the first connecting piece 23, the second connecting piece 24 and the fixing part 25 form a connecting rod mechanism that can move with each other;

[0054] Based on the above structure, when the adjusting rod 22 is driven to rise from the bottom to the top extreme position, the fixing part 25 will change from a vertical state to a horizontal state, and the adjusting rod 22 can stop rising and falling during the rising process, that is, the fixing part 25 can support the headrest at any angle between the vertical and horizontal positions. During use, the adjusting rod 22 is first pulled out a certain distance, and then the head or neck applies a certain force to the headrest, and it can stop when it reaches a comfortable position. The connecting rod structure can adaptively support the head or neck.

[0055] As an example, the fixing part 25 may include a fixing support tube 253, a first support piece 254 and a second support piece 255; the first support piece 254 is arranged perpendicular to the opening direction of the fixing support tube 253, and the second support piece 255 is arranged parallel to the first support piece 254. A reinforcing rod 256 may also be arranged between the first support piece 254 and the second support piece 255. Both the first support piece 254 and the second support piece 255 are connected to the outer wall of the fixing support tube 253.

[0056] Based on the above structure, by setting two parallel support plates, it is convenient to cooperate with other components to complete the angle adjustment operation. At the same time, reinforcing rods 256 are set between the support plates to enhance the external support strength of the entire structure.

[0057] As an example, a curved first avoidance portion 27 is provided on the first connecting piece 23 , and a curved second avoidance portion 28 is provided on the second supporting plate 232 .

[0058] Based on the above structure, the whole structure is relatively compact. In order to prevent interference between the two parts during hinged rotation, a first avoidance portion 27 and a second avoidance portion 28 are respectively provided on the first connecting plate 23 and the second supporting plate 232 .

[0059] As an example, a connecting seat can also be inserted into the fixed support tube 253, and the connecting seat can include an insertion rod 31 and a headrest connecting piece 32. The size of the insertion rod 31 is adapted to the size of the fixed support tube 253, and the headrest connecting piece 32 is connected to the end of the insertion rod 31.

[0060] Based on the above structure, the headrest and the headrest connecting piece 32 are connected as one, and the insertion rod 31 can be quickly inserted into the fixed support tube 253 to complete the cooperation with the connecting rod mechanism, and finally realize the angle adjustment function of the headrest.

[0061] In this solution, the support base 11 of the lifting assembly is arranged in the backrest support frame, and a through hole for the support sleeve to pass through is also arranged on the fourth plate surface; the headrest connecting piece 32 is connected to the headrest support frame.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A functional sofa, characterized in that: It at least includes a bottom support frame, a backrest support frame and a headrest support frame; the bottom support frame is provided with a matching piece for connecting with the backrest support frame, and the headrest support frame is connected with the backrest support frame through an angle adjustment component; the bottom support frame is provided with a sofa bottom frame extension function frame; the backrest support frame is also provided with a lifting component for lifting the headrest support frame.

2. A functional sofa as claimed in claim 1, characterized in that: The bottom support frame includes a first side panel, a second side panel and a back panel; the first side panel and the second side panel are symmetrically arranged at the ends of the back panel, and bottom support rods are arranged at the bottom positions of the first side panel and the second side panel, and a cavity structure for supporting the sofa bottom frame extension functional frame is formed by the first side panel, the second side panel and the back panel.

3. A functional sofa as claimed in claim 2, characterized in that: The matching piece is arranged at the rear side of the sofa bottom frame extension function frame, and the matching piece includes a connecting piece and a connecting groove, the connecting groove is connected to the backrest support frame, the shape structure of the connecting piece matches the connecting groove, and the connecting piece can be inserted into the connecting groove.

4. A functional sofa as claimed in claim 3, characterized in that: The connecting groove is also provided with a pair of spring pieces, and the connecting groove is provided with a locking hole matched with the spring piece. When the connecting piece is inserted into the connecting groove, the spring piece enters the locking hole, so that the connecting groove and the connecting piece are connected as a whole.

5. A functional sofa as claimed in claim 4, characterized in that: The backrest support frame includes a first plate surface, a second plate surface, a third plate surface and a fourth plate surface; the first plate surface and the second plate surface are respectively vertically arranged on both sides of the third plate surface, and the fourth plate surface is arranged at the top position of the third plate surface; the first plate surface and the second plate surface are both provided with a reinforcing support plate, and the reinforcing support plate is arranged on the contact portion between the mating piece and the first plate surface and the second plate surface.

6. A functional sofa as claimed in claim 5, characterized in that: The lifting assembly includes a support base, a guide column, a power motor, a connecting top plate and a lifting plate; the support base is provided with a support cavity for accommodating the guide column, the guide column is arranged in the support cavity, the power motor is arranged horizontally in the support base, and the connecting top plate is arranged above the guide column; a screw rod assembly is arranged in the guide column, the lifting plate is connected to the screw rod assembly, and the screw rod assembly is connected to the power motor. Under the action of the power motor, the lifting plate can be driven to move through the screw rod assembly.

7. A functional sofa as claimed in claim 6, characterized in that: The guide columns are provided with two, the connecting top plate is provided between the two guide columns, the guide columns are provided with a hollow structure, the screw assembly is provided in the guide columns and in the supporting base; the screw assembly comprises a rotating screw and a connecting nut; the connecting nut is sleeved on the rotating screw, a first bearing is provided at the top position of the inner side of the guide column, a second bearing is provided on the connecting base, the rotating screw is provided between the first bearing and the second bearing, a gear assembly is also provided on the rotating screw, the rotating screw is meshed with the output end of the power motor through the gear assembly, and the rotating screw is driven to rotate by the action of the power motor.

8. A functional sofa as claimed in claim 7, characterized in that: The lifting plate is provided with a sliding sleeve, the sliding sleeve is connected with a connecting nut, a plurality of guide grooves are provided on the guide column, the guide grooves are arranged along the length direction of the guide column, and a plurality of guide protrusions cooperating with the guide grooves are provided on the sliding sleeve.

9. A functional sofa as claimed in claim 8, characterized in that: The angle adjustment assembly includes a support sleeve, an adjustment rod, a first connecting piece, a second connecting piece and a fixing portion; the adjustment rod is sleeved in the support sleeve, and a connecting ear that cooperates with the first connecting piece is provided on the side wall of the support sleeve, and the first connecting piece is hinged to the connecting ear; the second connecting piece includes a first support plate and a second support plate; the first support plate and the second support plate are arranged at a predetermined angle, and the length of the second support plate is not less than the length of the first support plate; the end of the first support plate, the end of the second support plate and the connection between the first support plate and the second support plate are respectively provided with a first connecting hole, a second connecting hole and a third connecting hole; the fixing portion is respectively provided with a first matching hole and a second matching hole.

10. A functional sofa as claimed in claim 9, characterized in that: The first connecting hole is hinged to the end of the first connecting plate away from the connecting ear; the second connecting hole is hinged to the end of the adjusting rod and the first matching hole of the fixing part; the third connecting hole is hinged to the second matching hole; finally, the supporting sleeve, the adjusting rod, the first connecting plate, the second connecting plate and the fixing part form a connecting rod mechanism that can move relative to each other.

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