Sofa with adjustable backrest angle

Abstract

The utility model belongs to the technical field of furniture products, and particularly relates to a backrest angle adjustable sofa which comprises a sofa main body, a sofa backrest is arranged on the right side of the top of the sofa main body, a connecting rod groove and a supporting plate groove are formed in the right side of the sofa backrest, and a base is fixedly installed at the bottom of the sofa main body. Four groups of mounting brackets are fixedly mounted above the right side of the base, a screw rod is rotatably mounted among the top ends of the four groups of mounting brackets, the screw rod is rotatably sleeved with a bearing, the bearing is fixedly mounted on the mounting brackets, a rotating block is rotatably connected to the bearing, and a supporting plate is fixedly connected to the outer surface of the rotating block; by arranging the sofa backrest with the angle capable of being adjusted in a rotating mode, the fixing assembly for fixing the sofa backrest with the angle adjusted and the buffering assembly for buffering the adjusting force of the sofa backrest, the comfort and safety of the product are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture products, in particular to a sofa with an adjustable backrest angle. Background Art

[0002] A sofa is a cushioned multi-seat chair with a spring or thick foam backrest and armrests on both sides. It is a type of soft furnishings and is usually placed in the living room for daily rest, meeting guests or chatting.

[0003] A Chinese patent (authorization announcement number: CN 202552995 U, authorization announcement date: 2012.11.28) proposes a soft-padded sofa chair. The patent provides corresponding soft padding structures on the chair back, armrests and seat board surface, so that the user can clearly experience the comfort of the chair when sitting. It has the advantages of beautiful appearance, simple structure, low cost, comfort and durability.

[0004] When the above-mentioned sofa product is in use, the backrest angle of the sofa cannot be adjusted, which makes it difficult for the user to find a comfortable angle to sit down. Moreover, the sofa is like most sofas, and the user will feel back pain after sitting for a long time. In order to improve the comfort of the sofa product, we propose a sofa with an adjustable backrest angle. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a sofa with an adjustable backrest angle. By providing a sofa backrest that can be rotatably adjusted in angle and a fixing component for fixing the sofa backrest after the angle is adjusted, the sofa backrest can be adjusted to any angle within a certain range and fixed, thereby improving the comfort of the user; by providing a buffer component for buffering the adjustment force of the sofa backrest, the user has a buffering damping feeling when adjusting the angle of the sofa backrest, thereby improving the safety of the product and solving the background problem.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a sofa with an adjustable backrest angle, comprising a sofa body, a sofa backrest is arranged on the right side of the top of the sofa body, a connecting rod groove and a support plate groove are opened on the right side of the sofa backrest, a base is fixedly installed at the bottom of the sofa body, 4 groups of mounting brackets are fixedly installed on the upper right side of the base, a screw is rotatably installed between the top ends of the 4 groups of mounting brackets, a bearing is rotatably sleeved on the screw, and the bearing is fixedly installed on the mounting bracket, a rotating block is rotatably connected to the bearing, a support plate is fixedly connected to the outer surface of the rotating block, the other end of the support plate is fixedly installed in the support plate groove, a fixing component for fixing the rotation angle of the support plate is installed on the screw, and two groups of buffer components for buffering the adjustment force of the sofa backrest are installed between the sofa backrest and the mounting bracket.

[0007] Preferably, the fixing assembly includes a fixing block, which is threadedly sleeved on the screw rod and arranged on the front side of the rotating block. The rear side of the fixing block is fixedly connected with a bevel gear, and the front side of the rotating block is provided with a bevel gear groove meshing with the bevel gear.

[0008] Preferably, the left and right sides of the fixed block are fixedly connected with a first limit rod seat, the first limit rod is slidably connected inside the first limit rod seat, and the front end of the first limit rod is fixedly connected to the mounting bracket, and a second limit rod is provided on the left side of the rotating block, and the rear end of the second limit rod is fixedly connected to the mounting bracket.

[0009] Preferably, the buffer assembly includes a buffer groove, which is fixedly mounted on the mounting bracket, a buffer block is slidably connected inside the buffer groove, a connecting rod is fixedly connected to the top of the buffer block, and one end of the connecting rod away from the buffer block is fixedly mounted in the connecting rod groove.

[0010] Preferably, the screw rod passes through the front side of the sofa body and is fixedly connected to a handle, a tension spring is fixedly connected to the right side of the handle, a fixing rod is fixedly installed on the front side of the sofa body, and the fixing rod is arranged on the right side of the handle, and the end of the tension spring away from the handle is fixedly connected to the fixing rod.

[0011] Preferably, a plurality of hemispherical bodies are fixedly connected to the inner upper and lower surfaces of the buffer groove, and a plurality of hemispherical grooves for fitting with the hemispherical bodies are formed on the upper and lower outer surfaces of the buffer block.

[0012] Beneficial Effects

[0013] The utility model provides a sofa with adjustable backrest angle. Compared with the prior art, it has the following advantages:

[0014] Beneficial effects:

[0015] 1. A sofa with an adjustable backrest angle is provided with a sofa backrest that can be rotated to adjust the angle and a fixing component that fixes the sofa backrest after the adjusted angle, so that the sofa backrest can be adjusted and fixed at any angle within a certain range, thereby improving the comfort of the user.

[0016] 2. The sofa with an adjustable backrest angle is provided with a buffer component for buffering the adjustment force of the sofa backrest, so that the user has a buffer damping feeling when adjusting the sofa backrest angle, thereby improving the safety of the product.

[0017] 3. The sofa with adjustable backrest angle can be adjusted manually, and its structure is simple. The adjustment process will not cause damage to the inside of the sofa. At the same time, compared with the traditional electric backrest sofa, its production cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front view structure of the main body of the utility model;

[0019] Figure 2 This is a schematic diagram of the backrest angle adjustment structure of the main body of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the fixing assembly of the utility model;

[0021] Figure 4 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 5 For this utility model Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0023] In the figure: 1. sofa body; 2. sofa backrest; 3. mounting bracket; 4. screw; 5. handle; 6. tension spring; 7. buffer groove; 8. buffer block; 9. connecting rod; 10. support plate; 11. rotating block; 12. first limit rod; 13. first limit rod seat; 14. fixing block; 15. bearing; 16. second limit rod; 17. base; 18. connecting rod groove; 19. support plate groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides a technical solution: a sofa with an adjustable backrest angle, comprising a sofa body 1, a sofa backrest 2 is arranged on the right side of the top of the sofa body 1, a connecting rod groove 18 and a support plate groove 19 are opened on the right side of the sofa backrest 2, a base 17 is fixedly installed at the bottom of the sofa body 1, 4 groups of mounting brackets 3 are fixedly installed on the upper right side of the base 17, a screw 4 is rotatably installed between the top ends of the 4 groups of mounting brackets 3, a bearing 15 is rotatably sleeved on the screw 4, and the bearing 15 is fixedly installed on the mounting bracket 3, a rotating block 11 is rotatably connected to the bearing 15, a supporting plate 10 is fixedly connected to the outer surface of the rotating block 11, the other end of the supporting plate 10 is fixedly installed in the supporting plate groove 19, a fixing component for fixing the rotating angle of the supporting plate 10 is installed on the screw 4, and two groups of buffer components for adjusting the strength of the sofa backrest 2 are installed between the sofa backrest 2 and the mounting bracket 3.

[0026] When the product is in use, the fixing assembly is disengaged from the rotating block 11 by rotating the screw rod 4. Due to the action of the bearing 15, the rotating block 11 can rotate freely, thereby driving the support plate 10 to rotate. Since the support plate 10 is fixedly connected to the sofa backrest 2, the sofa backrest 2 is finally driven to rotate and adjust the angle. When the sofa backrest 2 rotates, due to the action of the buffer assembly, the damping feeling of the sofa backrest 2 is increased, thereby improving the comfort and safety of the product.

[0027] The fixing assembly includes a fixing block 14, which is threadedly sleeved on the screw rod 4 and arranged on the front side of the rotating block 11. The rear side of the fixing block 14 is fixedly connected with a bevel gear, and the front side of the rotating block 11 is provided with a bevel gear groove meshing with the bevel gear.

[0028] The left and right sides of the fixed block 14 are fixedly connected with the first limit rod seat 13, the first limit rod 12 is slidably connected inside the first limit rod seat 13, and the front end of the first limit rod 12 is fixedly connected to the mounting bracket 3. A second limit rod 16 is arranged on the left side of the rotating block 11, and the rear end of the second limit rod 16 is fixedly connected to the mounting bracket 3.

[0029] When the fixing assembly is in use, the screw 4 is rotated. Since the fixing block 14 is threadedly sleeved on the screw 4 and the first limit rods 12 are provided on both sides of the fixing block 14, the fixing block 14 is driven to move linearly on the screw 4. Since the bevel gear groove provided on the front side of the rotating block 11 meshes with the bevel gear fixedly connected to the rear side of the fixing block 14, the rotating block 11 is fixed and prevented from rotating.

[0030] The buffer assembly includes a buffer groove 7, which is fixedly mounted on the mounting bracket 3. A buffer block 8 is slidably connected inside the buffer groove 7. A connecting rod 9 is fixedly connected to the top of the buffer block 8. The end of the connecting rod 9 away from the buffer block 8 is fixedly mounted in the connecting rod groove 18.

[0031] The screw rod 4 passes through the front side of the sofa body 1 and is fixedly connected to a handle 5, a tension spring 6 is fixedly connected to the right side of the handle 5, a fixing rod is fixedly installed on the front side of the sofa body 1, and the fixing rod is arranged on the right side of the handle 5, and one end of the tension spring 6 away from the handle 5 is fixedly connected to the fixing rod. When adjusting the angle of the sofa backrest 2, the screw rod 4 is rotated by rotating the handle 5. After the adjustment is completed, the handle 5 is rotated back to its original position by the rebound effect of the tension spring 6.

[0032] A plurality of hemispherical bodies are fixedly connected to the upper and lower surfaces of the buffer groove 7 , and a plurality of hemispherical grooves for fitting with the hemispherical bodies are formed on the upper and lower outer surfaces of the buffer block 8 .

[0033] When the buffer assembly is in use, when the sofa backrest 2 starts to rotate, since one end of the connecting rod 9 is fixedly installed in the connecting rod groove 18 on the right side of the sofa backrest 2, and the other end of the connecting rod 9 is fixedly connected to the buffer block 8, the buffer block 8 is driven to rotate around the circumference of the screw 4, and the other end of the buffer block 8 is slidably connected to the inside of the buffer groove 7, and a plurality of hemispherical bodies are fixedly connected to the upper and lower surfaces of the interior of the buffer groove 7, and a plurality of hemispherical grooves that match the hemispherical bodies are provided on the upper and lower outer surfaces of the buffer block 8, so that the sofa backrest 2 is buffered and damped when it rotates, thereby improving the safety of the product.

[0034] Working principle: When the product is used, the bevel gear groove on the front side of the rotating block 11 meshes with the bevel gear fixedly connected to the rear side of the fixed block 14, so that the fixed rotating block 11 cannot rotate. By rotating the screw rod 4, the fixed block 14 is threadedly sleeved on the screw rod 4 and the first limit rod 12 is provided on both sides of the fixed block 14, thereby driving the fixed block 14 to move linearly on the screw rod 4 and disengage from the rotating block 11. Due to the action of the bearing 15, the rotating block 11 can rotate freely, thereby driving the support plate 10 to rotate. Since the support plate 10 is fixedly connected to the sofa backrest 2, the fixed block 14 can rotate freely. Finally, the sofa backrest 2 is driven to rotate and adjust the angle. When the sofa backrest 2 rotates, one end of the connecting rod 9 is fixedly installed in the connecting rod groove 18 on the right side of the sofa backrest 2, and the other end of the connecting rod 9 is fixedly connected to the buffer block 8, thereby driving the buffer block 8 to rotate around the circumference of the screw rod 4, and the other end of the buffer block 8 is slidably connected to the inside of the buffer groove 7, and the upper and lower surfaces of the inner part of the buffer groove 7 are fixedly connected with a plurality of hemispherical bodies, and the upper and lower outer surfaces of the buffer block 8 are provided with a plurality of hemispherical grooves that match the hemispherical bodies, so that the sofa backrest 2 is buffered and damped when it rotates, thereby improving the comfort and safety of the product.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sofa with an adjustable backrest angle, comprising a sofa body (1), characterized in that: A sofa backrest (2) is arranged on the right side of the top of the sofa body (1), a connecting rod groove (18) and a support plate groove (19) are provided on the right side of the sofa backrest (2), a base (17) is fixedly installed on the bottom of the sofa body (1), four groups of mounting brackets (3) are fixedly installed on the upper right side of the base (17), a screw rod (4) is rotatably installed between the top ends of the four groups of mounting brackets (3), a bearing (15) is rotatably sleeved on the screw rod (4), and the bearing (15) is fixedly installed on the mounting bracket (3), a rotating block (11) is rotatably connected to the bearing (15), a supporting plate (10) is fixedly connected to the outer surface of the rotating block (11), the other end of the supporting plate (10) is fixedly installed in the supporting plate groove (19), a fixing component for fixing the rotating angle of the supporting plate (10) is installed on the screw rod (4), and two groups of buffer components for adjusting the strength of the sofa backrest (2) are installed between the sofa backrest (2) and the mounting bracket (3).

2. The sofa with adjustable backrest angle according to claim 1, characterized in that: The fixing assembly comprises a fixing block (14), the fixing block (14) being threadedly sleeved on the screw rod (4), and the fixing block (14) being arranged on the front side of the rotating block (11), the rear side of the fixing block (14) being fixedly connected with a bevel gear, and the front side of the rotating block (11) being provided with a bevel gear groove meshing with the bevel gear.

3. The sofa with adjustable backrest angle according to claim 2, characterized in that: The left and right sides of the fixed block (14) are both fixedly connected with a first limiting rod seat (13), the first limiting rod seat (13) is slidably connected with a first limiting rod (12) inside, and the front end of the first limiting rod (12) is fixedly connected to the mounting bracket (3), and the left side of the rotating block (11) is provided with a second limiting rod (16), and the rear end of the second limiting rod (16) is fixedly connected to the mounting bracket (3).

4. The sofa with adjustable backrest angle according to claim 3, characterized in that: The buffer assembly comprises a buffer groove (7), wherein the buffer groove (7) is fixedly mounted on a mounting bracket (3), a buffer block (8) is slidably connected inside the buffer groove (7), a connecting rod (9) is fixedly connected to the top end of the buffer block (8), and an end of the connecting rod (9) away from the buffer block (8) is fixedly mounted in a connecting rod groove (18).

5. The sofa with adjustable backrest angle according to claim 4, characterized in that: The screw rod (4) passes through the front side of the sofa body (1) and is fixedly connected to a handle (5); a tension spring (6) is fixedly connected to the right side of the handle (5); a fixing rod is fixedly installed on the front side of the sofa body (1), and the fixing rod is arranged on the right side of the handle (5); and one end of the tension spring (6) away from the handle (5) is fixedly connected to the fixing rod.

6. The sofa with adjustable backrest angle according to claim 5, characterized in that: A plurality of hemispherical bodies are fixedly connected to the inner upper and lower surfaces of the buffer groove (7), and a plurality of hemispherical grooves for fitting with the hemispherical bodies are provided on the upper and lower outer surfaces of the buffer block (8).

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