Seat frames and sofas with them

Abstract

This utility model provides a seat bracket and a sofa having the same. The seat bracket includes a mounting frame, a seat frame, a backrest assembly, a linkage suspension assembly, a footrest, a slide rail assembly, and a first drive component. The seat frame is movably mounted on the mounting frame via the linkage suspension assembly. The backrest assembly has an upright state and a reclining state relative to the mounting frame. The slide rail assembly includes a first track component and a second track component that slide together. The first track component is disposed on the seat frame, the linkage suspension assembly, or the mounting frame, and the second track component is disposed on the footrest. The first drive component can drive the footrest to unfold or retract relative to the mounting frame. The technical solution provided in this application solves the problems of complex structures, cumbersome installation processes, and susceptibility to functional failures caused by multi-link telescopic structures in related technologies' footrest mechanisms.

Description

Technical Field

[0001] This utility model relates to the field of sofa technology, and more specifically, to a seat bracket and a sofa having the same. Background Technology

[0002] The movable sofa has a built-in seat frame (also known as a mechanical extension device). The seat frame includes a seat frame and a main mechanism for adjusting the seat frame's fore-and-aft position. The seat frame and main mechanism are also connected to a backrest assembly, footrest mechanism, etc., and soft upholstery is installed on these structures, ultimately forming the sofa's upholstered seat, upholstered backrest, and upholstered footrest. The seat frame also features a linear actuator, which drives the seat frame to switch between three-position (sitting, relaxing, and reclining) or two-position (casual and reclining) postures, thereby enabling the movable sofa to adapt to different postures and needs, providing a comfortable experience for users in various situations and according to their requirements.

[0003] However, in related technologies, the foot pedal mechanism is often a multi-link telescopic structure, which leads to drawbacks such as complex structure and cumbersome installation process. In addition, due to the complex connection structure, there is also a risk of functional failure, such as kinematic interference between the foot pedal mechanism, seat frame, and backrest assembly. Utility Model Content

[0004] This utility model provides a seat bracket and a sofa having the same, to solve the problems in related technologies where the foot pedal mechanism uses a multi-link telescopic structure, resulting in complex structure, cumbersome installation process, and easy functional failure.

[0005] According to one aspect of the present invention, a seat bracket is provided. The seat bracket includes a mounting frame, a seat frame, a backrest assembly, a linkage suspension assembly, a footrest, a slide rail assembly, and a first driving member. The seat frame is movably mounted on the mounting frame via the linkage suspension assembly. The backrest assembly has an upright state and a reclining state relative to the mounting frame. The slide rail assembly includes a first track member and a second track member that are slidably engaged. The first track member is disposed on the seat frame, the linkage suspension assembly, or the mounting frame, and the second track member is disposed on the footrest. The first driving member can drive the footrest to unfold or retract relative to the mounting frame.

[0006] Furthermore, the first track component includes a roller component, and the second track component includes a guide rail, the roller component and the guide rail being able to slide relative to each other in the extending direction of the guide rail.

[0007] Furthermore, the roller component includes a first roller, the guide rail has a groove disposed along its extension direction, and the first roller is slidably disposed within the groove; and / or, the roller component includes at least two second rollers, and the guide rail is clamped between the at least two second rollers.

[0008] Furthermore, the slide rail assembly also includes a mounting bracket, which is located at the front of the seat frame, and the roller components are mounted on the mounting bracket.

[0009] Furthermore, one end of the guide rail is hinged to the foot rest, and the end face of the guide rail corresponding to the foot rest has a limiting slope. When the foot rest moves to the unfolded position, the foot rest abuts against the limiting slope to restrict the unfolding of the foot rest relative to the mounting frame; and / or, the foot rest includes a foot plate or a foot bracket.

[0010] Furthermore, the first driving member includes a driving base, a moving member, and a transmission rod. The driving base extends along the front-rear direction of the mounting frame. The driving base is driven to connect with the moving member to drive the moving member to move on the driving base. The first end of the transmission rod is hinged to the moving member, and the other end of the transmission rod is hinged to the footrest. The driving base is disposed on the mounting frame; or, the driving base is disposed on the seat frame. The seat bracket also includes a second driving member, which is capable of driving the seat frame to move relative to the mounting frame.

[0011] Furthermore, a baffle is provided on the transmission rod. When the foot rest is in the retracted position, the baffle is located below the seat frame and covers the top of the drive base.

[0012] Furthermore, the linkage suspension assembly includes a first connecting component and a second connecting component that are linked together. The seat frame is connected to the second connecting component through the first connecting component, and the second connecting component is connected to the mounting bracket.

[0013] Furthermore, the first connecting assembly includes a first link, a second link, and a third link. The first link has a first connection point, a second connection point, and a third connection point that are not collinearly arranged. The first connection point and the third connection point are located at the two ends of the first link in the front-rear direction of the mounting bracket, respectively. The second connection point is located at the middle of the first link. The first connection point and the third connection point are respectively connected to the third link. The second connection point is hinged to the seat frame. One end of the second link is hinged to the seat frame, and the other end of the second link is hinged to the third link. Alternatively, the first connecting assembly is a connecting plate.

[0014] Further, the second connecting assembly includes a first control link, a second control link, a third control link, a fourth control link, a fifth control link, and a sixth control link. One end of the first control link is hinged to the mounting bracket, and the other end of the first control link is hinged to the second control link. One end of the third control link is hinged to the mounting bracket, and the other end of the third control link is hinged to the second control link. One end of the fourth control link is hinged to the middle of the third control link, and the other end of the fourth control link is hinged to the first connecting assembly. One end of the fifth control link is hinged to the middle of the first control link. The other end of the control link is hinged to the first connecting assembly, one end of the sixth control link is hinged to one end of the first control link, and the other end of the sixth control link is hinged to the first connecting assembly; wherein, the hinge points of the sixth control link and the first control link, the hinge points of the second control link and the first control link, the hinge points of the fifth control link and the first control link, and the hinge points of the mounting bracket and the first control link are arranged sequentially along the length direction of the first control link, and the hinge points of the sixth control link and the first control link and the hinge points of the mounting bracket and the first control link are located at both ends along the length direction of the first control link.

[0015] Furthermore, the mounting frame includes a mounting base and an armrest mounting plate, the armrest mounting plate being disposed on the mounting base, and the seat frame being movably disposed on the armrest mounting plate via a linkage suspension assembly.

[0016] According to another aspect of the present invention, a sofa is provided, the sofa including a seat support, the seat support being the seat support provided above.

[0017] The seat bracket, using the technical solution of this utility model, includes a mounting bracket, a seat frame, a backrest assembly, a linkage suspension assembly, a footrest, a slide rail assembly, and a first drive component.

[0018] First, compared to traditional multi-link telescopic foot pedal structures, the slide rail assembly used in this invention greatly simplifies the construction of the foot pedal mechanism. The slide rail assembly includes a first track component and a second track component that slide and engage with each other. This linear motion mechanism significantly reduces the design and manufacturing difficulty compared to the complex motion path of multi-link systems. The first track component can be flexibly mounted on the seat frame, linkage suspension assembly, or mounting bracket, while the second track component is set on the footrest. This configuration not only reduces the number of parts and connection points in the mechanism but also makes the foot pedal mechanism's operation more intuitive and controllable, reducing the complexity of the mechanical structure.

[0019] Secondly, the introduction of the slide rail assembly reduces the requirements for precise installation of the multi-link structure, thus simplifying the installation process. In traditional designs, precise calibration and alignment between multi-links are crucial for ensuring smooth operation of the foot pedal mechanism, which increases installation time and potential errors. Conversely, the slide rail assembly in this invention, with its simple linear motion principle, makes the installation process more efficient, reduces assembly difficulty and the probability of errors, and provides a more user-friendly component integration solution.

[0020] Finally, the linear motion of the slide rail assembly reduces the possibility of kinematic interference, which is key to resolving functional failures. In multi-link foot pedal mechanisms, the relative motion between the foot pedal mechanism and the seat frame and backrest assembly can lead to interference, especially during different posture changes. This invention eliminates the need for complex multi-point synchronous control by limiting the range of motion of the footrest to linear expansion and contraction along the slide rail, reducing failures caused by structural interference. Furthermore, the first drive component acts directly on the footrest, avoiding excessive reliance on intermediate links, reducing failure points in the power transmission process, and enhancing the overall stability and reliability of the system.

[0021] In summary, the seat bracket design of this utility model, by introducing a slide rail assembly to replace the traditional multi-link foot pedal telescopic structure, not only simplifies the construction of the foot pedal mechanism and reduces the complexity of the installation process, but also significantly reduces the risk of functional failure caused by structural complexity. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0023] Figure 1 This diagram shows the structure of the seat support provided in Embodiment 1 of the present invention when it is in a reclining position;

[0024] Figure 2 This shows a partial enlarged view of the footrest of the seat bracket provided in Embodiment 1 of this utility model when the seat is in a reclining position;

[0025] Figure 3 This shows a partial enlarged view of the roller component of the seat bracket provided in Embodiment 1 of this utility model when the seat is in a reclining position;

[0026] Figure 4 This is a partially enlarged view of the footrest of the seat bracket provided in Embodiment 1 of the present invention when the seat is in a reclining position;

[0027] Figure 5This shows a partial enlarged view of the linkage suspension assembly of the seat bracket provided in Embodiment 1 of this utility model when the seat is in a reclining position;

[0028] Figure 6 This diagram shows the structure of the seat bracket provided in Embodiment 1 of the present invention when it is in the TV position;

[0029] Figure 7 This diagram shows the structure of the seat support provided in Embodiment 1 of the present invention when it is in a sitting position;

[0030] Figure 8 This diagram shows the structure of the seat support provided in Embodiment 2 of the present invention when it is in a sitting position;

[0031] Figure 9 This diagram shows the structure of the seat bracket provided in Embodiment 2 of the present invention when it is in the TV position;

[0032] Figure 10 This shows a partial enlarged view of the roller component of the seat bracket provided in Embodiment 2 of this utility model when it is in the TV posture;

[0033] Figure 11 This diagram shows the structure of the seat support provided in Embodiment 2 of the present invention when it is in a reclining position;

[0034] Figure 12 A schematic diagram of the structure of the seat bracket provided in Embodiment 2 of this utility model when in a sitting position is shown.

[0035] The above figures include the following reference numerals:

[0036] 10. Mounting bracket; 11. Mounting base; 12. Handrail mounting plate;

[0037] 20. Seat frame; 21. Seat frame mounting plate; 22. Frame body;

[0038] 30. Backrest assembly; 31. Backrest insert; 32. Backrest panel;

[0039] 40. Linkage suspension assembly; 41. First connecting assembly; 411. First link; 4111. First connection point; 4112. Second connection point; 4113. Third connection point; 412. Second link; 413. Third link; 414. Connecting plate; 42. Second connecting assembly; 421. First control link; 422. Second control link; 423. Third control link; 424. Fourth control link; 425. Fifth control link; 426. Sixth control link;

[0040] 50. Foot support; 51. Foot plate;

[0041] 60. Slide rail assembly; 61. First track component; 611. Roller component; 6111. First roller; 6112. Second roller; 62. Second track component; 621. Guide rail; 6211. Slide groove; 6212. Limiting inclined surface; 63. Fixing frame;

[0042] 70. First driving component; 71. Driving base; 72. Moving component; 73. Transmission rod;

[0043] 80. Second driving component;

[0044] 90. Blindfold. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0046] like Figures 1 to 7 As shown, Embodiment 1 of this utility model provides a seat bracket, which includes a mounting frame 10, a seat frame 20, a backrest assembly 30, a linkage suspension assembly 40, a footrest 50, a slide rail assembly 60, and a first drive member 70. The seat frame 20 is movably mounted on the mounting frame 10 via the linkage suspension assembly 40. The backrest assembly 30 has an upright state and a reclining state relative to the mounting frame 10. The slide rail assembly 60 includes a first track member 61 and a second track member 62 that are slidably engaged. The first track member 61 is disposed on the seat frame 20, the linkage suspension assembly 40, or the mounting frame 10, and the second track member 62 is disposed on the footrest 50. The first drive member 70 can drive the footrest 50 to unfold or retract relative to the mounting frame 10.

[0047] The seat bracket provided in this embodiment can solve the problems of complex structure, complicated installation process and easy functional failure caused by the use of multi-link telescopic structure in the foot pedal mechanism in related technologies.

[0048] First, compared to traditional multi-link telescopic foot pedal structures, the slide rail assembly 60 used in the seat bracket provided in this embodiment greatly simplifies the construction of the foot pedal mechanism. The slide rail assembly 60 includes a first track member 61 and a second track member 62 that slide and cooperate with each other. This linear motion mechanism greatly reduces the design and manufacturing difficulty compared to the complex motion path of multi-link systems. The first track member 61 can be flexibly installed on the seat frame 20, the linkage suspension assembly 40, or the mounting bracket 10, while the second track member 62 is set on the footrest 50. This configuration not only reduces the number of parts and connection points of the mechanism, but also makes the movement of the foot pedal mechanism more intuitive and controllable, reducing the complexity of the mechanical structure.

[0049] Secondly, the introduction of the slide rail assembly 60 reduces the requirements for precise installation of the multi-link structure, thereby simplifying the installation process. In traditional designs, precise calibration and alignment between multi-links are crucial for ensuring smooth operation of the foot pedal mechanism, which increases installation time and potential errors. Conversely, the slide rail assembly in the seat bracket provided in this embodiment, with its simple linear motion principle, makes the installation process more efficient, reduces assembly difficulty and the probability of errors, and provides a more user-friendly component integration solution.

[0050] Finally, the linear motion of the slide rail assembly 60 reduces the possibility of kinematic interference, which is key to resolving functional failures. In multi-link footrest mechanisms, the relative motion between the footrest mechanism and the seat frame and backrest assembly can lead to interference, especially during different posture changes. The seat bracket provided in this embodiment eliminates the need for complex multi-point synchronous control by limiting the range of motion of the footrest to unfolding and retracting along the slide rail, reducing failures caused by structural interference. Furthermore, the first drive member 70 acts directly on the footrest member 50, avoiding excessive reliance on intermediate links, reducing failure points in the power transmission process, and enhancing the overall stability and reliability of the system.

[0051] In summary, the seat bracket provided in this embodiment replaces the traditional multi-link foot pedal telescopic structure with a slide rail assembly 60, which not only simplifies the construction of the foot pedal mechanism and reduces the complexity of the installation process, but also significantly reduces the risk of functional failure caused by structural complexity.

[0052] like Figure 2 and Figure 3As shown, the first track component 61 includes a roller component 611, and the second track component 62 includes a guide rail 621. The roller component 611 and the guide rail 621 can slide relative to each other in the extending direction of the guide rail 621. This design of the roller component and guide rail utilizes the characteristic that the rolling friction of the roller component 611 on the guide rail 621 is less than the sliding friction, reducing the resistance of the footrest 50 during unfolding or retraction, and ensuring smooth movement. When the user adjusts the footrest 50, the roller component 611 rolls smoothly along the guide rail 621, realizing the unfolding or retraction of the footrest 50, which is simple and effortless to operate. The movement of the footrest 50 is lighter and easier, maintaining good movement performance even after prolonged use.

[0053] It should be noted that the positions of the guide rail and roller components can be interchanged.

[0054] like Figure 3 As shown, in this embodiment, the roller component 611 includes a first roller 6111, and the guide rail 621 has a groove 6211 arranged along its extending direction. The first roller 6111 is slidably disposed within the groove 6211. The rolling of the first roller 6111 within the groove 6211 guides the movement trajectory of the footrest 50, increasing the stability of the footrest 50 when it unfolds or retracts. During the movement of the footrest 50, the cooperation between the roller and the guide rail is tighter, reducing the swaying of the footrest 50 during movement and improving the stability and reliability of the entire seat frame.

[0055] The first track member 61 is disposed on the seat frame 20, the linkage suspension assembly 40, or the mounting bracket 10. In this embodiment, the first track member 61 is disposed on the seat frame 20. In other embodiments, the first track member 61 may be disposed on the linkage suspension assembly 40 or the mounting bracket 10.

[0056] like Figure 2 and Figure 3 As shown, the slide rail assembly 60 also includes a fixing bracket 63, which is located at the front of the seat frame 20, and the roller component 611 is mounted on the fixing bracket 63. The fixing bracket 63 provides an installation position for the roller component 611, ensuring that the roller component 611 is securely mounted on the seat frame 20, thereby ensuring the stable movement of the foot rest 50.

[0057] It should be noted that in this embodiment, the direction in which the legs extend is considered forward, and the direction in which the backrest reclines is considered backward.

[0058] like Figure 4As shown, in this embodiment, one end of the guide rail 621 is hinged to the foot rest 50. The end face of the guide rail 621 corresponding to the foot rest 50 has a limiting slope 6212. When the foot rest 50 moves to the unfolded position, the foot rest 50 abuts against the limiting slope 6212 to restrict the unfolding of the foot rest 50 relative to the mounting bracket 10. The limiting slope 6212, through its geometric limiting effect, prevents the foot rest 50 from over-unfolding, avoiding injury to the user or damage to the structure.

[0059] By setting the limiting ramp 6212, the unfolding range of the footrest 50 is precisely controlled, improving the safety and functionality of the seat. When the user unfolds the footrest 50, the limiting ramp 6212 of the guide rail 621 naturally restricts the final position of the footrest 50, requiring no additional control from the user, making operation simple and safe.

[0060] The foot support 50 includes a foot board 51 or a foot bracket, which has the advantages of simple structure and low cost. In this embodiment, the foot support 50 is a foot board 51 (which can be combined with a wooden board). In other embodiments, the foot support 50 can be set as a foot bracket (a combination of a pure iron frame or a combination of an iron frame and a wooden board).

[0061] like Figure 1 As shown, in this embodiment, the first driving member 70 includes a driving base 71, a moving member 72, and a transmission rod 73. The driving base 71 extends along the front-rear direction of the mounting frame 10. The driving base 71 is drivenly connected to the moving member 72 to drive the moving member 72 to move on the driving base 71. The first end of the transmission rod 73 is hinged to the moving member 72, and the other end of the transmission rod 73 is hinged to the footrest 50. The driving base 71 is mounted on the mounting frame 10. The combination of the driving base 71, the moving member 72, and the transmission rod 73, through the linear output of the first driving member 70, is converted into the rotational motion of the footrest 50, realizing the unfolding and retraction of the footrest 50. The movement of the footrest 50 is smoother and the response speed is faster, improving the comfort and ease of operation of the seat.

[0062] The process is as follows: the user starts the first driving component 70, which drives the base 71 to push the moving component 72 to move, and then drives the foot rest component 50 to unfold or retract through the transmission rod 73. The whole process is automated and efficient.

[0063] Specifically, this embodiment has only one linear actuator (first actuator). When the footrest 50 reaches its maximum extension, the linear actuator has not yet reached its maximum stroke. Because the extension of the footrest 50 is limited by the abutment action, when the linear actuator continues to move, it can pull the seat frame forward, thereby causing the linkage suspension assembly and backrest assembly to deform, forming a reclining position. Reclining position: The footrest 50 remains extended, and the backrest assembly is folded down.

[0064] In other embodiments, the foot rest can also be directly connected to the mounting bracket, in which case it can operate independently of the linkage suspension assembly (here, the linkage suspension assembly needs to be given a separate drive source), or the foot rest and the linkage suspension assembly can be linked by setting another linkage component.

[0065] In other embodiments, the footrest can be directly connected to the backrest assembly, and when the footrest is extended to its maximum position, it can cause the backrest assembly to tilt down. Alternatively, the footrest can be connected to a linkage suspension assembly.

[0066] In this embodiment, the linkage suspension assembly 40 includes a first connecting component 41 and a second connecting component 42 that are linked together. The seat frame 20 is connected to the second connecting component 42 via the first connecting component 41, and the second connecting component 42 is connected to the mounting bracket 10. When the user adjusts the seat posture, the first connecting component 41 and the second connecting component 42 work together to achieve smooth movement of the seat frame 20, ensuring the comfort and safety of the seat when changing posture.

[0067] In other words, the coordinated design of the first connecting component 41 and the second connecting component 42 enables multi-degree-of-freedom movement of the seat frame 20 relative to the mounting bracket 10, adapting to changes in posture. The seat support moves more smoothly when changing posture, improving the user experience.

[0068] It should be noted that, in this embodiment, the fixing bracket 63 is disposed at the front of the seat frame 20. The front of the seat frame 20 may be at the front of the first connecting component 41 or at the front of the seat frame 20. The seat frame 20 here may be a square frame as shown in the figure, or it may be a plate. In this embodiment, the seat frame 20 includes a seat frame mounting plate 21 disposed at the front and rear and a frame body 22 fixed on the seat frame mounting plate 21.

[0069] In this embodiment, the first connecting assembly 41 includes a first connecting rod 411, a second connecting rod 412, and a third connecting rod 413. The first connecting rod 411 has a first connection point 4111, a second connection point 4112, and a third connection point 4113 that are not collinear. The first connection point 4111 and the third connection point 4113 are located at opposite ends of the first connecting rod 411 in the front-rear direction of the mounting frame 10. The second connection point 4112 is located in the middle of the first connecting rod 411. The first connection point 4111 and the third connection point 4113 are connected to the third connecting rod 413. The second connection point 4112 is hinged to the seat frame 20. One end of the second connecting rod 412 is hinged to the seat frame 20, and the other end of the second connecting rod 412 is hinged to the third connecting rod 413. By using the cooperation of the first connecting rod 411, the second connecting rod 412, and the third connecting rod 413, the seat frame 20 can move smoothly relative to the mounting frame 10. When the seat support changes position, the movement trajectory of the seat frame 20 is more reasonable, avoiding interference with other components and improving the overall coordination and stability of the seat.

[0070] It should be noted that the seat frame 20 is connected to the third link 413 through the first link 411 and the second link 412, and the seat frame 20 is actually relatively fixed to the third link 413.

[0071] Furthermore, since the seat frame 20 is actually fixed relative to the third link 413, the guide rail can also be connected to the first connecting assembly 41.

[0072] like Figure 5As shown, the second connecting assembly 42 includes a first control link 421, a second control link 422, a third control link 423, a fourth control link 424, a fifth control link 425, and a sixth control link 426. One end of the first control link 421 is hinged to the mounting bracket 10, and the other end of the first control link 421 is hinged to the second control link 422. One end of the third control link 423 is hinged to the mounting bracket 10, and the other end of the third control link 423 is hinged to the second control link 422. The fourth control link 424 is hinged to the middle of the third control link 423, and the other end of the fourth control link 424 is hinged to the first connecting assembly 41. The fifth control link 425 is hinged to the middle of the first control link 421, and the other end of the fifth control link 425 is hinged to the first connecting assembly 41. The sixth control link 426 is hinged to one end of the first control link 421, and the other end of the sixth control link 426 is hinged to the first connecting assembly 41. The hinge points of the sixth control link 426 and the first control link 421, the second control link 422 and the first control link 421, the fifth control link 425 and the first control link 421, and the mounting bracket 10 and the first control link 421 are arranged sequentially along the length of the first control link 421. The hinge points of the sixth control link 426 and the first control link 421, and the mounting bracket 10 and the first control link 421, are located at opposite ends along the length of the first control link 421. This structure enables the linkage between the first connecting assembly 41 and the second connecting assembly 42.

[0073] Specifically, in this embodiment, one end of the fourth control link 424 is hinged to the middle of the third control link 423, and the other end of the fourth control link 424 is hinged to the third link 413. One end of the fifth control link 425 is hinged to the middle of the first control link 421, and the other end of the fifth control link 425 is hinged to the third link 413. One end of the sixth control link 426 is hinged to one end of the first control link 421, and the other end of the sixth control link 426 is hinged to the third link 413.

[0074] like Figure 1 As shown, in this embodiment, the mounting frame 10 includes a mounting base 11 and an armrest mounting plate 12. The armrest mounting plate 12 is disposed on the mounting base 11, and the seat frame 20 is movably disposed on the armrest mounting plate 12 via a linkage suspension assembly 40. Utilizing the armrest mounting plate 12 as an additional support point for the seat frame 20 increases the structural stability of the seat support and also provides the user with a comfortable armrest position.

[0075] In other embodiments, the mounting bracket 10 can be a mounting base 11, in which case the mounting base 11 is a bracket with floor-mounted legs.

[0076] In this embodiment, the slide rail assembly 60 is located in the middle of the seat bracket in the width direction, and the first drive member 70 is located in the middle of the seat bracket in the width direction, thereby reducing interference between the leg unit and the suspension unit.

[0077] like Figure 5 As shown, in this embodiment, the backrest assembly 30 includes a backrest insert 31, which is used to connect to the sofa backrest.

[0078] like Figures 8 to 12 As shown, Embodiment 2 of this utility model provides a seat bracket. The difference between Embodiment 2 and Embodiment 1 is that:

[0079] In embodiment two, the roller component 611 further includes at least two second rollers 6112, with a guide rail 621 clamped between the at least two second rollers 6112. The principle of this design is to guide the movement trajectory of the footrest 50 by utilizing the rolling of the first roller 6111 within the groove 6211, while simultaneously using the clamping of the guide rail 621 by the second rollers 6112 to increase the stability of the footrest 50 when unfolding or retracting. During the movement of the footrest 50, the tighter fit between the rollers and the guide rail reduces the wobbling of the footrest 50 during movement, improving the stability and reliability of the entire seat support. When the user adjusts the footrest 50, the first roller 6111 rolls within the groove 6211, while the second rollers 6112 clamp the guide rail 621, ensuring stable movement of the footrest 50.

[0080] In Embodiment 2, the drive base 71 is mounted on the seat frame mounting plate 21, and the seat bracket also includes a second drive member 80, which can drive the seat frame 20 to move relative to the mounting bracket 10. That is, the drive mechanism becomes a dual drive. In Embodiment 1, a long-stroke driver (first drive member) was used to simultaneously realize the two-stage changes of sitting posture → TV posture and TV posture → reclining posture. Now, one driver (first drive member) realizes the sitting posture → TV posture, and the other driver (second drive member) realizes the TV posture → reclining posture.

[0081] In Embodiment 2, a baffle 90 is provided on the transmission rod 73. When the footrest 50 is in the retracted position, the baffle 90 is located below the seat frame 20 and above the drive base 71. When the footrest 50 is retracted, the baffle 90 can block the drive base 71, preventing the user from sitting on the drive unit. This structure extends the service life of the drive base 71, reduces maintenance costs, and improves the reliability and economy of the seat. Furthermore, the baffle 90 is fixed to the transmission rod 73, providing support and protection when seated. In the TV position and reclining position, the baffle 90 remains below the seat unit, providing support.

[0082] Specifically, the seat bracket in Embodiment 2 is provided with two transmission rods 73, and the two sides of the cover plate 90 are respectively connected to the two transmission rods 73, making the structure more stable and the protection effect better.

[0083] In Embodiment 2, the first connecting component 41 is a connecting plate 414, which has a simpler structure. One end of the fourth control link 424 is hinged to the middle of the third control link 423, and the other end of the fourth control link 424 is hinged to the connecting plate 414. One end of the fifth control link 425 is hinged to the middle of the first control link 421, and the other end of the fifth control link 425 is hinged to the connecting plate 414. One end of the sixth control link 426 is hinged to one end of the first control link 421, and the other end of the sixth control link 426 is hinged to the connecting plate 414.

[0084] Specifically, the connecting plate 414 and the seat frame mounting plate 21 are integrally formed. The fixing bracket 63 can be set on the seat frame mounting plate 21 or on the connecting plate 414.

[0085] In Embodiment 2, slide rail assemblies 60 are provided at both ends of the seat bracket in the width direction.

[0086] like Figure 9 As shown, in Embodiment 2, the backrest assembly 30 is a backrest panel 32. Furthermore, using the backrest assembly 30 in Embodiment 2 facilitates the implementation of a zero-wall-adhesion function.

[0087] Embodiment 3 of this utility model provides a sofa, which includes a seat frame, the same seat frame described above. Therefore, this sofa also solves the problems of complex structure, cumbersome installation process, and susceptibility to functional failure caused by the use of a multi-link telescopic structure in the footrest mechanism of related technologies.

[0088] The multi-functional seat support allows for diverse sofa postures, meeting the needs of different usage scenarios.

[0089] The device provided in the embodiments, through its innovative slide rail assembly design, enables the smooth deployment and retraction of the footrest. It has a simple structure, simplified installation process, reduced risk of functional failure, and avoids kinematic interference between the leg unit and the seat and backrest units, thereby improving the comfort and safety of the seat.

[0090] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0091] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0092] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional 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, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0093] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0094] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model.

[0095] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seat bracket, characterized in that, The seat support includes a mounting bracket (10), a seat frame (20), a backrest assembly (30), a linkage suspension assembly (40), a footrest (50), a slide rail assembly (60), and a first drive member (70). The seat frame (20) is movably mounted on the mounting bracket (10) via the linkage suspension assembly (40). The backrest assembly (30) has an upright state and a reclining state relative to the mounting bracket (10). The slide rail assembly (60) includes a first track member (61) and a second track member (62) that are slidably engaged. The first track member (61) is disposed on the seat frame (20), the linkage suspension assembly (40), or the mounting bracket (10). The second track member (62) is disposed on the foot rest member (50). The first drive member (70) can drive the foot rest member (50) to unfold or retract relative to the mounting bracket (10).

2. The seat bracket according to claim 1, characterized in that, The first track member (61) includes a roller member (611), and the second track member (62) includes a guide rail (621). The roller member (611) and the guide rail (621) are capable of sliding relative to each other in the extending direction of the guide rail (621).

3. The seat bracket according to claim 2, characterized in that, The roller component (611) includes a first roller (6111), the guide rail (621) has a groove (6211) disposed along its extending direction, and the first roller (6111) is slidably disposed within the groove (6211); and / or, The roller component (611) includes at least two second rollers (6112), and the guide rail (621) is sandwiched between the at least two second rollers (6112).

4. The seat bracket according to claim 2, characterized in that, The slide rail assembly (60) also includes a fixing frame (63), which is disposed at the front of the seat frame (20), and the roller (611) is disposed on the fixing frame (63).

5. The seat bracket according to claim 2, characterized in that, One end of the guide rail (621) is hinged to the foot rest (50). The guide rail (621) has a limiting slope (6212) on the end face corresponding to the foot rest (50). When the foot rest (50) moves to the unfolded position, the foot rest (50) abuts against the limiting slope (6212) to restrict the unfolding of the foot rest (50) relative to the mounting bracket (10); and / or, The foot support (50) includes a foot plate (51) or a foot bracket.

6. The seat bracket according to claim 1, characterized in that, The first driving member (70) includes a driving base (71), a moving member (72), and a transmission rod (73). The driving base (71) extends along the front-rear direction of the mounting bracket (10). The driving base (71) is driven to connect with the moving member (72) to drive the moving member (72) to move on the driving base (71). The first end of the transmission rod (73) is hinged to the moving member (72), and the other end of the transmission rod (73) is hinged to the foot rest (50). The drive base (71) is disposed on the mounting bracket (10); or the drive base (71) is disposed on the seat frame (20), and the seat bracket further includes a second drive member (80), which is capable of driving the seat frame (20) to move relative to the mounting bracket (10).

7. The seat bracket according to claim 6, characterized in that, A baffle plate (90) is provided on the transmission rod (73). When the foot rest (50) is in the retracted position, the baffle plate (90) is located below the seat frame (20) and covers the drive base (71).

8. The seat bracket according to any one of claims 1 to 7, characterized in that, The linkage suspension assembly (40) includes a first connecting component (41) and a second connecting component (42) that are linked together. The seat frame (20) is connected to the second connecting component (42) through the first connecting component (41), and the second connecting component (42) is connected to the mounting bracket (10).

9. The seat bracket according to claim 8, characterized in that, The first connecting assembly (41) includes a first connecting rod (411), a second connecting rod (412), and a third connecting rod (413). The first connecting rod (411) has a first connection point (4111), a second connection point (4112), and a third connection point (4113) that are not collinear. The first connection point (4111) and the third connection point (4113) are located at opposite ends of the first connecting rod (411) in the front-rear direction of the mounting bracket (10). The second connection point (4112) is located at the middle of the first connecting rod (411). The first connection point (4111) and the third connection point (4113) are connected to the third connecting rod (413). The second connection point (4112) is hinged to the seat frame (20). One end of the second connecting rod (412) is hinged to the seat frame (20), and the other end of the second connecting rod (412) is hinged to the third connecting rod (413). Alternatively, The first connecting component (41) is a connecting plate (414).

10. The seat bracket according to claim 9, characterized in that, The second connecting assembly (42) includes a first control link (421), a second control link (422), a third control link (423), a fourth control link (424), a fifth control link (425), and a sixth control link (426). One end of the first control link (421) is hinged to the mounting bracket (10), and the other end of the first control link (421) is hinged to the second control link (422). One end of the third control link (423) is hinged to the mounting bracket (10), and the other end of the third control link (423) is hinged to the second control link (422). Then, one end of the fourth control link (424) is hinged to the middle of the third control link (423), and the other end of the fourth control link (424) is hinged to the first connecting assembly (41). One end of the fifth control link (425) is hinged to the middle of the first control link (421), and the other end of the fifth control link (425) is hinged to the first connecting assembly (41). One end of the sixth control link (426) is hinged to one end of the first control link (421), and the other end of the sixth control link (426) is hinged to the first connecting assembly (41). The hinge points of the sixth control link (426) and the first control link (421), the second control link (422) and the first control link (421), the fifth control link (425) and the first control link (421), and the mounting bracket (10) and the first control link (421) are arranged sequentially along the length of the first control link (421). The hinge points of the sixth control link (426) and the first control link (421) and the mounting bracket (10) and the first control link (421) are located at both ends along the length of the first control link (421).

11. The seat bracket according to any one of claims 1 to 7, characterized in that, The mounting frame (10) includes a mounting base (11) and an armrest mounting plate (12). The armrest mounting plate (12) is disposed on the mounting base (11), and the seat frame (20) is movably disposed on the armrest mounting plate (12) via the connecting rod suspension assembly (40).

12. A sofa, characterized in that, The sofa includes a seat frame, which is the seat frame according to any one of claims 1 to 11.

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