Seat support and zero-wall-leaning seat with same

Abstract

The utility model provides a seat support and a zero-leaning-against-wall seat with the same. The seat support comprises a base, a seat body and a supporting part, the linkage mechanism comprises a support side plate and a linkage assembly, the linkage assembly is hinged to the base, and the support side plate is hinged to the linkage assembly; the backrest mechanism comprises a backrest mounting plate, a backrest pivoting assembly and a limiting plate, the backrest pivoting assembly comprises a first front backrest connecting rod, a second front backrest connecting rod and a rear backrest connecting rod, the lower end of the first front backrest connecting rod is hinged to the support side plate, and the upper end of the first front backrest connecting rod is hinged to the lower end of the second front backrest connecting rod; the upper end of the second front backrest connecting rod is hinged to the front end of the backrest mounting plate, the lower end of the rear backrest connecting rod is hinged to the linkage assembly, and the upper end of the rear backrest connecting rod is hinged to the rear end of the backrest mounting plate; the backrest mounting plate is provided with a backward leaning position inclining backwards relative to the base and a recycling position recycling relative to the base. Through the scheme, the problem that the use experience of the movable sofa is poor can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, and in particular, to a seat bracket and a zero-wall-adjacent seat having the same. Background Art

[0002] A convertible sofa is a common piece of furniture in life, which enables people to adjust their postures according to their needs. A convertible sofa usually includes three sitting postures: a lying posture, a TV posture, and a sitting posture. Among them, the convertible sofa has legs, a seat part, and a backrest. By arranging soft packages on the corresponding structures, soft package seats, soft package backrests, and soft package footrests of the sofa are formed. In the sitting posture, the legs are not opened, the seat part is close to a horizontal state, and at the same time, the backrest is in a nearly upright state. In the TV posture, also known as the TV position, the legs are opened forward, and the backrest remains basically unchanged. In the lying posture, the backrest reclines backward, and the legs remain basically unchanged for people to rest.

[0003] However, during the unfolding process of the convertible sofa, since the backrest part reclines backward, a gap may appear at the junction of the backrest part and the seat part. The existence of this gap may cause items to fall into it or there is a risk of being pinched, thus affecting the use and experience of the sofa. Summary of the Utility Model

[0004] The utility model provides a seat bracket and a zero-wall-adjacent seat having the same to solve the problem of poor use experience of the convertible sofa in the related art.

[0005] According to an aspect of the utility model, a seat bracket is provided. The seat bracket includes: a base; a linkage mechanism, including a bracket side plate and a linkage component, the linkage component is hinged to the base, and the bracket side plate is hinged to the linkage component; a backrest mechanism, including a backrest mounting plate, a backrest pivoting component, and a limiting plate. The backrest pivoting component includes a first front backrest link, a second front backrest link, and a rear backrest link. The lower end of the first front backrest link is hinged to the bracket side plate, the upper end of the first front backrest link is hinged to the lower end of the second front backrest link, the upper end of the second front backrest link is hinged to the front end of the backrest mounting plate, the lower end of the rear backrest link is hinged to the linkage component, and the upper end of the rear backrest link is hinged to the rear end of the backrest mounting plate; wherein, the backrest mounting plate has a reclined position inclined backward relative to the base and a retracted position retracted relative to the base, and the limiting plate can form a four-bar linkage mechanism with the backrest pivoting component and / or the bracket side plate to limit the movement range of the backrest mounting plate between the reclined position and the retracted position.

[0006] Further, the limiting plate includes a first pivoting plate, the front end of the first pivoting plate is hinged to the bracket side plate, and the rear end of the first pivoting plate is hinged to the rear backrest link.

[0007] Further, the limiting plate further includes a second pivoting plate. The front end of the second pivoting plate is hinged to the second front backrest link, the rear end of the second pivoting plate is hinged to the backrest link, and the rear end of the first pivoting plate is located below the rear end of the second pivoting plate.

[0008] Further, the backrest pivoting assembly further includes a limiting post provided on the second front backrest link. When the backrest mounting plate is in the reclined position, the limiting post abuts against the backrest mounting plate. When the backrest mounting plate is in the retracted position, the limiting post abuts against the second pivoting plate.

[0009] Further, the seat bracket further includes an anti-tipping forward mechanism. The anti-tipping forward mechanism includes a first anti-tipping forward rod and a second anti-tipping forward rod. The upper ends of the first anti-tipping forward rod and the second anti-tipping forward rod are hinged to each other. The middle of the first anti-tipping forward rod is hinged to the front end of the linkage assembly. The lower end of the second anti-tipping forward rod is hinged to the base. When the backrest mounting plate is in the reclined position, the lower end of the first anti-tipping forward rod contacts the ground.

[0010] Further, when the backrest mounting plate is in the reclined position, the angle between the second front backrest link and the seat frame mounting surface of the bracket side plate is between 50° and 60°.

[0011] Further, when the backrest mounting plate is in the reclined position, the distance between the front end of the backrest mounting plate and the lower surface of the base is between 260 mm and 300 mm.

[0012] Further, the linkage assembly includes a first linkage plate, a second linkage plate, a third linkage plate, a fourth linkage plate, and a fifth linkage plate. The lower end of the first linkage plate is hinged to the base. The upper end of the first linkage plate is hinged to the front end of the second linkage plate. The rear end of the second linkage plate is hinged to the bracket side plate. The front end of the third linkage plate is hinged to the middle of the second linkage plate. The rear end of the third linkage plate is hinged to the front end of the fourth linkage plate. The lower end of the fourth linkage plate is hinged to the lower end of the bracket side plate. The rear end of the fourth linkage plate is hinged to the backrest link. The upper end of the fourth linkage plate is hinged to the upper end of the fifth linkage plate. The lower end of the fifth linkage plate is hinged to the base.

[0013] Further, the seat bracket further includes a driving mechanism. The driving mechanism includes a driving member, a slider, a driving link, and a driving rod. The driving member is drivingly connected to the slider to drive the slider to move in the front-back direction of the base. The driving link extends in the front-back direction of the base, and the driving rod extends in the left-right direction of the base. The slider is hinged to the lower end of the driving link, the upper end of the driving link is hinged to the driving rod, and the driving rod is drivingly connected to the bracket side plate. During the process of the driving member driving the slider to slide, the slider can drive the driving link to rotate, thereby causing the driving rod to move forward and upward. The driving rod drives the backrest mounting plate to move from the retracted position to the reclined position through the bracket side plate and the linkage assembly; and / or, the seat bracket further includes a footrest assembly. The footrest assembly includes an inner footrest plate, an outer footrest plate, a front footrest plate, a rear footrest plate, a first front footrest link, a second front footrest link, a rear footrest link, a front footstool, and a rear footstool. The rear end of the outer footrest plate is hinged to the bracket side plate, the front end of the outer footrest plate is hinged to the rear end of the rear footrest plate, the rear end of the inner footrest plate is hinged to the bracket side plate, the front end of the inner footrest plate is hinged to the rear end of the front footrest plate, the middle of the inner footrest plate is hinged to the middle of the rear footrest plate, the rear end of the first front footrest link is hinged to the middle of the rear footrest plate, the middle of the first front footrest link is hinged to the middle of the front footrest plate, the front end of the first front footrest link is hinged to the rear end of the second front footrest link, the front footstool is respectively hinged to the front end of the front footrest plate and the front end of the second front footrest link, the lower end of the rear footrest link is hinged to the middle of the second front footrest link, and the rear footstool is respectively hinged to the front end of the rear footrest plate and the upper end of the rear footrest link.

[0014] According to another aspect of the present invention, a zero-wall-adjacent seat is provided. The zero-wall-adjacent seat includes the seat bracket provided above.

[0015] Applying the technical solution of the present invention, the seat bracket includes a base, a linkage mechanism, and a backrest mechanism. When the seat is switched from the TV position to the lying position, by using the linkage assembly and the bracket side plate to move relative to the base, the linkage assembly tilts forward relative to the base, and the bracket side plate moves upward and forward relative to the base and rotates. Since the tilting amplitude of the linkage assembly is greater than the movement amplitude of the bracket side plate, the linkage assembly drives the lower end of the rear backrest link to move downward, and the backrest mounting plate moves downward and rotates, causing the backrest mounting plate to recline. Moreover, when the backrest mounting plate moves downward, the first front backrest link and the second front backrest link rotate relative to each other, making the backrest mounting plate closer to the bracket side plate. And, by using the limiting plate and the backrest pivot assembly or the bracket side plate to form a four-bar linkage mechanism, the movement range of the backrest mounting plate can be restricted. Thus, when the backrest mounting plate rotates and moves from the retracted position to the reclined position, it moves forward and downward following the linkage assembly, and the movement amplitude is greater than that of the bracket side plate. The distance between the front end of the backrest mounting plate and the rear end of the bracket side plate gradually decreases, making the front end of the backrest mounting plate closer to the seat frame of the bracket side plate, thereby reducing the gap between the backrest part and the seat part, eliminating the risk of items falling or being pinched, and improving the use experience of the sofa. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 shows a schematic structural view of the seat bracket in a reclined position according to an embodiment of the present utility model;

[0018] Figure 2 shows another schematic structural view of the seat bracket in a reclined position according to an embodiment of the present utility model;

[0019] Figure 3 shows a schematic structural view of the seat bracket in a TV position according to an embodiment of the present utility model;

[0020] Figure 4 shows a schematic structural view of the seat bracket in a sitting position according to an embodiment of the present utility model;

[0021] Figure 5 shows a partial schematic view of the seat bracket in a reclined position according to an embodiment of the present utility model;

[0022] Figure 6 shows another partial schematic view of the seat bracket in a reclined position according to an embodiment of the present utility model;

[0023] Figure 7 shows a partial schematic view of the seat bracket in a TV position according to an embodiment of the present utility model;

[0024] Figure 8 shows another partial schematic view of the seat bracket in a TV position according to an embodiment of the present utility model.

[0025] Among them, the above-mentioned drawings include the following reference numerals:

[0026] 10, base;

[0027] 20, linkage mechanism; 21, bracket side plate; 22, linkage assembly; 221, first linkage plate; 222, second linkage plate; 223, third linkage plate; 224, fourth linkage plate; 225, fifth linkage plate; 24, first drive rod; 25, second drive rod; 26, third drive rod;

[0028] 30. Backrest mechanism; 31. Backrest mounting plate; 32. Backrest pivot assembly; 321. First front backrest link; 322. Second front backrest link; 323. Rear backrest link; 324. Limit post; 33. Limit plate; 331. First pivot plate; 332. Second pivot plate;

[0029] 40. Anti - forward - tilt mechanism; 41. First anti - forward - tilt rod; 42. Second anti - forward - tilt rod;

[0030] 50. Driving mechanism; 51. Slide block; 52. Driving link; 53. Driving rod; 54. Front driving plate;

[0031] 60. Footrest assembly; 61. Inner footrest board; 62. Outer footrest board; 63. Front footrest board; 64. Rear footrest board; 65. First front footrest link; 66. Second front footrest link; 67. Rear footrest link; 68. Front footstool; 69. Rear footstool;

[0032] A. The distance between the front end of the backrest mounting plate and the lower surface of the base when the backrest mounting plate is in the reclined position;

[0033] B. The angle between the second front backrest link and the seat frame mounting surface of the support side plate when the backrest mounting plate is in the reclined position. Detailed implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] Such as Figures 1 to 8As shown in the figure, an embodiment of the present utility model provides a seat bracket. The seat bracket includes a base 10, a linkage mechanism 20, and a backrest mechanism 30. The linkage mechanism 20 includes a bracket side plate 21 and a linkage assembly 22. The linkage assembly 22 is hinged to the base 10, and the bracket side plate 21 is hinged to the linkage assembly 22. The backrest mechanism 30 includes a backrest mounting plate 31, a backrest pivoting assembly 32, and a limiting plate 33. The backrest pivoting assembly 32 includes a first front backrest link 321, a second front backrest link 322, and a rear backrest link 323. The lower end of the first front backrest link 321 is hinged to the bracket side plate 21, the upper end of the first front backrest link 321 is hinged to the lower end of the second front backrest link 322, the upper end of the second front backrest link 322 is hinged to the front end of the backrest mounting plate 31, the lower end of the rear backrest link 323 is hinged to the linkage assembly 22, and the upper end of the rear backrest link 323 is hinged to the rear end of the backrest mounting plate 31. Wherein, the backrest mounting plate 31 has a reclined position that is inclined backward relative to the base 10 and a retracted position that is retracted relative to the base 10. The limiting plate 33 can form a four-bar linkage mechanism with the backrest pivoting assembly 32 and / or the bracket side plate 21 to limit the movement range of the backrest mounting plate 31 between the reclined position and the retracted position.

[0036] Applying the technical solution of the present utility model, the seat bracket includes a base 10, a linkage mechanism 20, and a backrest mechanism. When the seat is switched from the TV position to the lying position, by using the relative movement of the linkage assembly 22 and the bracket side plate 21 relative to the base 10, the linkage assembly 22 leans forward relative to the base 10, and the bracket side plate 21 moves upward and forward relative to the base 10 and rotates clockwise. Since the forward inclination amplitude of the linkage assembly 22 is greater than the movement amplitude of the bracket side plate 21, the linkage assembly 22 drives the lower end of the rear backrest link 323 to move downward, and the backrest mounting plate 31 moves downward and rotates clockwise, causing the backrest mounting plate 31 to recline. Moreover, when the backrest mounting plate 31 moves downward, the first front backrest link 321 and the second front backrest link 322 rotate relative to each other, making the backrest mounting plate 31 closer to the bracket side plate 21. And by using the limiting plate 33 to form a four-bar linkage mechanism with the backrest pivoting assembly 32 or the bracket side plate 21, the movement range of the backrest mounting plate 31 can be limited. Thus, when the backrest mounting plate 31 rotates clockwise and moves from the retracted position to the reclined position, it moves forward and downward following the linkage assembly 22, and the movement amplitude is greater than that of the bracket side plate 21. The distance between the front end of the backrest mounting plate 31 and the rear end of the bracket side plate 21 gradually decreases, making the front end of the backrest mounting plate 31 closer to the seat frame of the bracket side plate 21, thereby reducing the gap between the backrest part and the seat part, eliminating the risk of items falling or being clamped, and improving the use experience of the sofa.

[0037] In this embodiment, the limiting plate 33, the backrest pivot assembly 32, and the backrest mounting plate 31 can form a four-bar linkage mechanism. Alternatively, the limiting plate 33, the bracket side plate 21, and the backrest mounting plate 31 can form a four-bar linkage mechanism. The four-bar linkage mechanism can form a stable motion mechanism, guiding the backrest mounting plate 31, making the structure more compact and capable of withstanding greater horizontal forces.

[0038] It should be noted that the rotation directions of the components of the seat bracket all correspond to Figure 2 the perspective of the side view of the seat bracket in

[0039] As Figure 5 and Figure 7 shown, the limiting plate 33 includes a first pivot plate 331. The front end of the first pivot plate 331 is hinged to the bracket side plate 21, and the rear end of the first pivot plate 331 is hinged to the rear backrest link 323. By using the first pivot plate 331, a four-bar linkage mechanism can be formed with the bracket side plate 21, the linkage assembly 22, and the rear backrest link 323, thereby making the movement of the seat bracket more stable.

[0040] As Figure 5 and Figure 7 shown, the limiting plate 33 further includes a second pivot plate 332. The front end of the second pivot plate 332 is hinged to the second front backrest link, and the rear end of the second pivot plate 332 is hinged to the rear backrest link 323. The rear end of the first pivot plate 331 is located below the rear end of the second pivot plate 332. By using the second pivot plate 332, a four-bar linkage mechanism can be formed with the second front backrest link 322, the backrest mounting plate 31, and the rear backrest link 323, restricting the movement range of the backrest mounting plate 31 and making its movement more stable.

[0041] Specifically, when the rear backrest link 323 moves downward, relying on the structural characteristics of the link quadrilateral, it can drive the rear end of the first pivot plate 331 to move downward and approach the bracket side plate 21. The first pivot plate 331 can drive the upper end of the rear backrest link 323 to move downward and approach the bracket side plate 21, so that the four-bar linkage mechanism formed by the second front backrest link 322, the backrest mounting plate 31, the rear backrest link 323, and the second pivot plate 332 deforms, causing the second pivot plate 332 to tilt under the restriction of the first front backrest link 321 and the second pivot plate 332, and at the same time driving the backrest mounting plate 31 to recline backward.

[0042] Moreover, during the downward movement of the rear backrest link 323, it drives the second pivot plate 332 to move downward. The second pivot plate 332 drives the first front backrest link 321 and the second front backrest link 322 to rotate relative to each other, causing them to fold.

[0043] As Figure 4 、 Figure 5 and Figure 7As shown, the backrest pivot assembly 32 further includes a limit post 324 provided on the second front backrest link 322. When the backrest mounting plate 31 is in the reclined position, the limit post 324 abuts against the backrest mounting plate 31. When the backrest mounting plate 31 is in the retracted position, the limit post 324 abuts against the second pivot plate 332. In the sitting position and the TV position, by using the limit post 324 to abut against the second pivot plate 332, the downward movement of the limit post 324 can be restricted, and further the downward movement of the second front backrest link 322 can be restricted, so as to achieve better and more stable backrest support force in the sitting position and the TV position. In the lying position, the limit post 324 abuts against the backrest mounting plate 31 to restrict the downward movement of the backrest mounting plate 31, so as to achieve better and more stable backrest support force in the lying position.

[0044] As Figure 5 shown, the seat bracket further includes an anti-tipping mechanism 40. The anti-tipping mechanism 40 includes a first anti-tipping rod 41 and a second anti-tipping rod 42. The upper end of the first anti-tipping rod 41 is hinged to the upper end of the second anti-tipping rod 42. The middle of the first anti-tipping rod 41 is hinged to the front end of the linkage assembly 22. The lower end of the second anti-tipping rod 42 is hinged to the base 10. When the backrest mounting plate 31 is in the reclined position, the lower end of the first anti-tipping rod 41 contacts the ground. By adopting the above anti-tipping mechanism 40, in the lying position, the first anti-tipping rod 41 contacts the ground to form a support, thereby providing support for the seat bracket and reducing the risk of the seat bracket tipping forward in the zero-gravity state.

[0045] In this embodiment, a roller is provided at the lower end of the first anti-tipping rod 41. In the lying position, the roller contacts the ground.

[0046] As Figure 2 shown, when the backrest mounting plate 31 is in the reclined position, the angle B between the second front backrest link 322 and the seat frame mounting surface of the bracket side plate 21 is between 50° and 60°. By adopting the above angle range, an acute angle is formed between the second front backrest link 322 and the seat frame mounting surface of the bracket side plate 21, so that the height of the front end of the backrest mounting plate 31 decreases vertically, and further the height of the backrest can be lower, which helps to enhance the zero-gravity experience.

[0047] Specifically, compared with the existing zero-wall-touching seat, the whole backrest moves down about 45 mm.

[0048] Among them, the angle B between the second front backrest link 322 and the seat frame mounting surface of the bracket side plate 21 can be 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60° and any value between 50° and 60°.

[0049] It should be noted that when the included angle B between the second front backrest link 322 and the seat frame mounting surface of the support side plate 21 is between 54° and 58°, the height of the backrest can be lower and the zero-gravity experience of the seat is stronger.

[0050] In this embodiment, an L-shaped support plate is provided on the side of the support side plate 21 to form the seat frame mounting surface.

[0051] Among them, the second front backrest link 322 takes the line connecting the hinge point centers at both ends as one side of the angle B, and the other side is the projection of the seat frame mounting surface of the support side plate 21 in Figure 2 the side view shown.

[0052] As Figure 1 shown, when the backrest mounting plate 31 is in the reclined position, the distance A between the front end of the backrest mounting plate 31 and the lower surface of the base 10 is between 260 mm and 300 mm. With the above dimension range, the height of the backrest mounting plate 31 can be lower, which helps to enhance the zero-gravity experience.

[0053] Among them, the distance A between the front end of the backrest mounting plate 31 and the lower surface of the base 10 can be 260 mm, 270 mm, 280 mm, 290 mm, 300 mm, or any value between 260 mm and 300 mm.

[0054] It should be noted that when the distance A between the front end of the backrest mounting plate 31 and the lower surface of the base 10 is between 270 mm and 290 mm, the height of the backrest can be lower and the zero-gravity experience of the seat is stronger.

[0055] As Figure 7As shown, the linkage assembly 22 includes a first linkage plate 221, a second linkage plate 222, a third linkage plate 223, a fourth linkage plate 224, and a fifth linkage plate 225. The lower end of the first linkage plate 221 is hinged to the base 10, the upper end of the first linkage plate 221 is hinged to the front end of the second linkage plate 222, the rear end of the second linkage plate 222 is hinged to the bracket side plate 21, the front end of the third linkage plate 223 is hinged to the middle of the second linkage plate 222, the rear end of the third linkage plate 223 is hinged to the front end of the fourth linkage plate 224, the lower end of the fourth linkage plate 224 is hinged to the lower end of the bracket side plate 21, the rear end of the fourth linkage plate 224 is hinged to the backrest connecting rod 323, the upper end of the fourth linkage plate 224 is hinged to the upper end of the fifth linkage plate 225, and the lower end of the fifth linkage plate 225 is hinged to the base 10. With the above-mentioned linkage assembly 22, when the seat is switched from the TV position to the reclined position, the backrest mounting plate 31 moves from the retracted position to the reclined position. The first linkage plate 221 and the fifth linkage plate 225 tilt forward relative to the base 10. The upper end of the first linkage plate 221 moves forward and downward, driving the second linkage plate 222 to rotate counterclockwise relative to the bracket side plate 21. The front end of the second linkage plate 222 moves downward. The second linkage plate 222 drives the third linkage plate 223 to rotate counterclockwise. The front end of the third linkage plate 223 moves downward and its rear end moves upward. The third linkage plate 223 drives the fourth linkage plate 224 to rotate clockwise relative to the bracket side plate 21. The fourth linkage plate 224 drives the fifth linkage plate 225 to tilt forward relative to the base 10 and drives the lower end of the backrest connecting rod 323 to move downward.

[0056] Wherein, the middle of the first anti-tipping rod 41 is hinged to the first linkage plate 221.

[0057] As Figure 1 and Figure 4As shown, the seat bracket further includes a drive mechanism 50. The drive mechanism 50 includes a drive member, a slider 51, a drive link 52, and a drive rod 53. The drive member is drivingly connected to the slider 51 to drive the slider 51 to move in the front-rear direction of the base 10. The drive link 52 extends in the front-rear direction of the base 10, and the drive rod 53 extends in the left-right direction of the base 10. The slider 51 is hinged to the lower end of the drive link 52, the upper end of the drive link 52 is hinged to the drive rod 53, and the drive rod 53 is drivingly connected to the bracket side plate 21. During the process of the drive member driving the slider 51 to slide, the slider 51 can drive the drive link 52 to rotate, thereby causing the drive rod 53 to move forward and upward. The drive rod 53 drives the backrest mounting plate 31 to move from the retracted position to the reclined position through the bracket side plate 21 and the linkage assembly 22. When the drive member drives the slider 51 to slide forward in the front-rear direction of the base 10, the rear end of the drive link 52 rotates relative to the slider 51, and the front end of the drive link 52 moves forward and upward relative to the slider 51, driving the drive rod 53 to move forward and upward. Then, the drive rod 53 drives the bracket side plate 21 connected to it to move forward and upward, and the bracket side plate 21 drives the linkage assembly 22 to move forward and upward relative to the base 10.

[0058] Specifically, the bracket side plate 21 has a through hole provided therethrough, and the drive rod 53 is inserted through the through hole.

[0059] As Figure 2 As shown, the seat bracket further includes a footrest assembly 60. The footrest assembly 60 includes an inner footrest plate 61, an outer footrest plate 62, a front footrest plate 63, a rear footrest plate 64, a first front footrest link 65, a second front footrest link 66, a rear footrest link 67, a front footrest 68, and a rear footrest 69. The rear end of the outer footrest plate 62 is hinged to the bracket side plate 21, the front end of the outer footrest plate 62 is hinged to the rear end of the rear footrest plate 64, the rear end of the inner footrest plate 61 is hinged to the bracket side plate 21, the front end of the inner footrest plate 61 is hinged to the rear end of the front footrest plate 63, the middle of the inner footrest plate 61 is hinged to the middle of the rear footrest plate 64, the rear end of the first front footrest link 65 is hinged to the middle of the rear footrest plate 64, the middle of the first front footrest link 65 is hinged to the middle of the front footrest plate 63, the front end of the first front footrest link 65 is hinged to the rear end of the second front footrest link 66, the front footrest 68 is respectively hinged to the front end of the front footrest plate 63 and the front end of the second front footrest link 66, the lower end of the rear footrest link 67 is hinged to the middle of the second front footrest link 66, and the rear footrest 69 is respectively hinged to the front end of the rear footrest plate 64 and the upper end of the rear footrest link 67.

[0060] In this embodiment, the left and right sides of the seat bracket are symmetric structures, and the linkage mechanism 20 and the backrest mechanism 30 are provided on both sides thereof. At the same time, in order to make the seat bracket more stable, a connecting cross beam extending in the horizontal direction is provided between the two side linkage mechanisms 20.

[0061] Among them, the driving member is a linear motor.

[0062] In this embodiment, in the electric solution, the driving mechanism 50 further includes a front driving plate 54, and both ends of the front driving plate 54 are respectively hinged to the driving rod 53 and the outer bench plate 62. In the non-electric solution, the linkage mechanism 20 further includes a first driving rod 24, a second driving rod 25, and a third driving rod 26. The front end of the first driving rod 24 is hinged to the middle of the first linkage plate 221, the rear end of the first driving rod 24 is hinged to the upper end of the second driving rod 25, the middle of the second driving rod 25 is hinged to the support side plate 21, the lower end of the second driving rod 25 is hinged to the rear end of the third driving rod 26, and the front end of the third driving rod 26 is hinged to the outer bench plate 62.

[0063] During the process of the driving member driving the slider 51 to slide, the slider 51 can drive the driving link 52 to rotate, thereby driving the driving rod 53 to rotate. The driving rod 53 drives the front driving plate 54 to move forward, the front driving plate 54 drives the outer bench plate 62 to extend relative to the support side plate 21, the outer bench plate 62 drives the rear bench plate 64 to extend, the rear bench plate 64 drives the inner bench plate 61 to extend, the inner bench plate 61 drives the front bench plate 63 to extend, and the four-bar linkage structure formed by the front bench plate 63, the front footrest 68, the first front bench link 65, and the second front bench link 66 drives the front footrest 68 to extend. The rear bench plate 64 and the rear bench link 67 jointly drive the rear footrest 69 to extend, so that the footrest assembly 60 is switched from the retracted position to the extended position. The recovery process of the footrest assembly 60 is opposite to the above process and will not be elaborated here.

[0064] In the non-electric solution, during the extension process of the footrest assembly 60, the support side plate 21 moves forward relative to the linkage assembly 22, so that the rear end of the first driving rod 24 moves backward, thereby driving the second driving rod 25 to rotate relative to the support side plate 21. The upper end of the second driving rod 25 moves backward and the front end moves forward. The second driving rod 25 drives the third driving rod 26 to move forward, thereby promoting the extension of the footrest assembly 60.

[0065] Among them, the reclining posture of the seat bracket corresponds to the footrest assembly being in the extended position and the backrest mounting plate 31 being in the reclined position. The TV posture of the seat bracket corresponds to the footrest assembly being in the extended position and the backrest mounting plate 31 being in the retracted position. The sitting posture of the seat bracket corresponds to the footrest assembly being in the retracted position and the backrest mounting plate 31 being in the retracted position.

[0066] Another embodiment of the present application provides a zero-wall - leaning seat, and the zero-wall - leaning seat includes the seat bracket provided above. When the backrest mounting plate 31 rotates clockwise and moves from the retracted position to the reclined position, it moves forward and downward following the linkage assembly 22, and the moving amplitude is greater than that of the bracket side plate 21. The distance between the front end of the backrest mounting plate 31 and the rear end of the bracket side plate 21 gradually decreases, making the front end of the backrest mounting plate 31 closer to the seat frame of the bracket side plate 21, thereby reducing the gap between the backrest part and the seat part, eliminating the risk of items falling or being clamped, and enhancing the use experience of the sofa.

[0067] Among them, the backrest mounting plate 31 mounts the backrest of the seat. Since the first front - backrest link 321 and the second front - backrest link 322 rotate relative to each other when the backrest mounting plate 31 moves downward, the front end of the backrest can move a greater distance forward when the backrest lies down, so that the seat backrest does not interfere with the wall during the process of lying down, thus realizing the zero - wall - leaning function.

[0068] Another embodiment of the present application also provides a zero - gravity zero - wall - leaning seat, and the zero - gravity zero - wall - leaning seat includes the seat bracket provided above. When the seat switches from the sitting position to the lying position, the foot - raising amplitude is 105° to 115°, thereby driving the user's legs to change from the vertical state to the raised state. When switching from the sitting position to the lying position, the backrest reclining amplitude is 40° to 55°, driving the user's back to recline backward, making the iron frame have the zero - gravity function (the user's legs are slightly higher than or level with the heart). Also, because of the characteristic of the reduced height of this backrest, the backrest is lower, the zero - gravity function is more significant, and the experience is better.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0071] In the description of the present utility model, it should be understood that orientation terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc., generally indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description. Without contrary statements, these orientation terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0072] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc., can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0073] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings. Therefore, they should not be construed as limiting the protection scope of the present utility model.

[0074] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A seat bracket, characterized in that: The seat support comprises: Base (10); A linkage mechanism (20) comprises a bracket side plate (21) and a linkage component (22), wherein the linkage component (22) is hingedly connected to the base (10), and the bracket side plate (21) is hingedly arranged on the linkage component (22); A backrest mechanism (30) comprises a backrest mounting plate (31), a backrest pivot assembly (32) and a limit plate (33); the backrest pivot assembly (32) comprises a first front backrest link (321), a second front backrest link (322) and a rear backrest link (323); the lower end of the first front backrest link (321) is hinged to the bracket side plate (21); the upper end of the first front backrest link (321) is hinged to the lower end of the second front backrest link (322); the upper end of the second front backrest link (322) is hinged to the front end of the backrest mounting plate (31); the lower end of the rear backrest link (323) is hinged to the linkage assembly (22); and the upper end of the rear backrest link (323) is hinged to the rear end of the backrest mounting plate (31); The backrest mounting plate (31) has a reclining position tilted backward relative to the base (10) and a recovered position recovered relative to the base (10), and the limit plate (33) can form a four-bar linkage with the backrest pivot assembly (32) and / or the bracket side plate (21) to limit the range of motion of the backrest mounting plate (31) between the reclining position and the recovered position.

2. The seat support according to claim 1, characterized in that: The limiting plate (33) comprises a first pivot plate (331), the front end of the first pivot plate (331) is hinged to the bracket side plate (21), and the rear end of the first pivot plate (331) is hinged to the rear backrest connecting rod (323).

3. The seat support according to claim 2, characterized in that: The limiting plate (33) also includes a second pivot plate (332), the front end of the second pivot plate (332) is hinged to the second front backrest connecting rod (322), the rear end of the second pivot plate (332) is hinged to the rear backrest connecting rod (323), and the rear end of the first pivot plate (331) is located below the rear end of the second pivot plate (332).

4. The seat support according to claim 3, characterized in that: The backrest pivot assembly (32) also includes a limiting column (324) arranged on the second front backrest connecting rod (322), and when the backrest mounting plate (31) is located in the reclining position, the limiting column (324) abuts against the backrest mounting plate (31), and when the backrest mounting plate (31) is located in the recovery position, the limiting column (324) abuts against the second pivot plate (332).

5. The seat support according to claim 1, characterized in that: The seat support also includes an anti-tilt mechanism (40), which includes a first anti-tilt rod (41) and a second anti-tilt rod (42), the upper end of the first anti-tilt rod (41) is hinged to the upper end of the second anti-tilt rod (42), the middle part of the first anti-tilt rod (41) is hinged to the front end of the linkage assembly (22), the lower end of the second anti-tilt rod (42) is hinged to the base (10), and when the backrest mounting plate (31) is in the reclining position, the lower end of the first anti-tilt rod (41) is in contact with the ground.

6. The seat support according to claim 1, characterized in that: When the backrest mounting plate (31) is located in the reclining position, the angle between the second front backrest connecting rod (322) and the seat frame mounting surface of the bracket side plate (21) is between 50° and 60°.

7. The seat support according to claim 1, characterized in that: When the backrest mounting plate (31) is located in the reclining position, the distance between the front end of the backrest mounting plate (31) and the lower surface of the base (10) is between 260 mm and 300 mm.

8. The seat support according to claim 1, characterized in that: The linkage assembly (22) comprises a first linkage plate (221), a second linkage plate (222), a third linkage plate (223), a fourth linkage plate (224) and a fifth linkage plate (225), wherein the lower end of the first linkage plate (221) is hinged to the base (10), the upper end of the first linkage plate (221) is hinged to the front end of the second linkage plate (222), the rear end of the second linkage plate (222) is hinged to the bracket side plate (21), the front end of the third linkage plate (223) is hinged to the bracket side plate (21), and the upper end of the first linkage plate (221) is hinged to the front end of the second linkage plate (222). The middle part of the second linkage plate (222) is hinged, the rear end of the third linkage plate (223) is hinged to the front end of the fourth linkage plate (224), the lower end of the fourth linkage plate (224) is hinged to the lower end of the bracket side plate (21), the rear end of the fourth linkage plate (224) is hinged to the rear backrest connecting rod (323), the upper end of the fourth linkage plate (224) is hinged to the upper end of the fifth linkage plate (225), and the lower end of the fifth linkage plate (225) is hinged to the base (10).

9. The seat support according to claim 1, characterized in that: The seat support further comprises a driving mechanism (50), wherein the driving mechanism (50) comprises a driving member, a slider (51), a driving connecting rod (52) and a driving rod (53), wherein the driving member is drivingly connected to the slider (51) to drive the slider (51) to move along the front-rear direction of the base (10), the driving connecting rod (52) extends along the front-rear direction of the base (10), and the driving rod (53) extends along the left-right direction of the base (10), the slider (51) is hinged to the lower end of the driving connecting rod (52), and the The upper end of the driving connecting rod (52) is hinged to the driving rod (53), and the driving rod (53) is drivingly connected to the bracket side plate (21). When the driving member drives the slider (51) to slide, the slider (51) can drive the driving connecting rod (52) to rotate, thereby causing the driving rod (53) to move forward and upward. The driving rod (53) drives the backrest mounting plate (31) to move from the retracted position to the reclining position through the bracket side plate (21) and the linkage assembly (22); and / or, The seat support also includes a footrest assembly (60), and the footrest assembly (60) includes an inner bench board (61), an outer bench board (62), a front bench board (63), a rear bench board (64), a first front bench connecting rod (65), a second front bench connecting rod (66), a rear bench connecting rod (67), a front footrest (68) and a rear footrest (69), the rear end of the outer bench board (62) is hinged to the support side board (21), the front end of the outer bench board (62) is hinged to the rear end of the rear bench board (64), the rear end of the inner bench board (61) is hinged to the support side board (21), the front end of the inner bench board (61) is hinged to the rear end of the front bench board (63), and the middle part of the inner bench board (61) is hinged to the rear end of the front bench board (63). It is hinged to the middle part of the rear bench board (64), the rear end of the first front bench connecting rod (65) is hinged to the middle part of the rear bench board (64), the middle part of the first front bench connecting rod (65) is hinged to the middle part of the front bench board (63), the front end of the first front bench connecting rod (65) is hinged to the rear end of the second front bench connecting rod (66), the front footrest (68) is respectively hinged to the front end of the front bench board (63) and the front end of the second front bench connecting rod (66), the lower end of the rear bench connecting rod (67) is hinged to the middle part of the second front bench connecting rod (66), and the rear footrest (69) is respectively hinged to the front end of the rear bench board (64) and the upper end of the rear bench connecting rod (67).

10. A zero-wall chair, characterized in that: The zero-wall seat comprises a seat support as claimed in any one of claims 1 to 9.

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