Seat bracket and sofa with same

Abstract

The invention provides a seat bracket and a sofa with the same. The seat bracket comprises a seat frame mounting piece, a seat frame and a seat frame, mounting a bracket; the suspension mechanism is arranged between the seat frame mounting part and the mounting bracket, the suspension mechanism has a storage state and an extension state, and when the suspension mechanism is switched between the storage state and the extension state, the suspension mechanism can drive the seat frame mounting part to move relative to the mounting bracket; the backrest mounting piece is arranged at the rear end of the seat frame mounting piece, and the backrest mounting piece has an upright state and a backward leaning state relative to the seat frame mounting piece; the pedal mechanism is arranged at the front end of the seat frame mounting piece, and the pedal mechanism has a retraction state and an extension state relative to the seat frame mounting piece; and when the seat frame mounting piece moves relative to the mounting bracket, the backrest mounting piece can be switched between an upright state and a leaning-back state and can move in the front-back direction relative to the mounting bracket. According to the technical scheme provided by the invention, the problem of interference and collision between the backrest and the armrest in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of seats, and more particularly, to a seat bracket and a sofa having the same. Background Art

[0002] A T-shaped backrest is a backrest with a shape similar to the letter "T". After being assembled into a sofa, a part of the T-shaped backrest will press on top of the armrest. With the iterative upgrade of the sofa market, T-shaped backrests are also designed on functional sofas.

[0003] Functional sofas usually have an adjustable seat bracket built-in, which drives the backrest of the functional sofa to recline into a lying position. In the related art, the backrest of the functional sofa is directly hinged to the seat frame of the functional sofa. When the sofa switches from a sitting position or a TV position to a lying position, the backrest swings relative to the seat frame of the functional sofa.

[0004] Therefore, when the backrest in the related art reclines, there will be a problem of interference and collision with the armrest. Especially in the case of a functional sofa with a floor-standing armrest, due to the floor-standing setting of the armrest of the functional sofa with a floor-standing armrest, the armrest cannot move relative to the ground. At this time, it completely relies on the swing of the backrest itself to avoid interference with the armrest, making the design more difficult. Summary of the Invention

[0005] The present invention provides a seat bracket and a sofa having the same to solve the problem of interference and collision between the backrest and the armrest in the related art.

[0006] According to one aspect of the present invention, a seat bracket is provided. The seat bracket includes: a seat frame mounting member; a mounting bracket; a suspension mechanism disposed between the seat frame mounting member and the mounting bracket. The suspension mechanism has a retracted state and an extended state. When the suspension mechanism switches between the retracted state and the extended state, the suspension mechanism can drive the seat frame mounting member to move relative to the mounting bracket; a backrest mounting member disposed at the rear end of the seat frame mounting member. The backrest mounting member has an upright state and a reclined state relative to the seat frame mounting member; a footrest mechanism disposed at the front end of the seat frame mounting member. The footrest mechanism has a retracted state and an extended state relative to the seat frame mounting member; wherein, when the seat frame mounting member moves relative to the mounting bracket, the backrest mounting member can switch between the upright state and the reclined state and move relative to the mounting bracket in the front-rear direction.

[0007] Further, the seat bracket further includes a backrest link mechanism and a linkage member. The backrest mounting member is connected to the seat frame mounting member and the mounting bracket respectively through the backrest link mechanism. Both ends of the linkage member are connected to the backrest link mechanism and the suspension mechanism respectively. When the seat frame mounting member moves relative to the mounting bracket, the backrest mounting member switches between the upright state and the reclined state and moves relative to the mounting bracket in the front-rear direction through the backrest link mechanism and the linkage member.

[0008] Further, the backrest link mechanism includes a first backrest link and a second backrest link. Two ends of the first backrest link are respectively hinged to the middle of the backrest mounting member and the seat frame mounting member, and two ends of the second backrest link are respectively hinged to the front end of the backrest mounting member and the mounting bracket; the linkage member includes a linkage rod. One end of the linkage rod is hinged to the first backrest link or the second backrest link, and the other end of the linkage rod is hinged to the suspension mechanism.

[0009] Further, the suspension mechanism includes a front suspension rod and a rear suspension rod. The front suspension rod is located in front of the rear suspension rod. One end of the front suspension rod and one end of the rear suspension rod are respectively hinged to the seat frame mounting member, and the other end of the front suspension rod and the other end of the rear suspension rod are respectively hinged to the mounting bracket.

[0010] Further, one end of the linkage rod is hinged to the middle of the second backrest link, and the other end of the linkage rod is hinged to the middle of the rear suspension rod.

[0011] Further, when the suspension mechanism is in the retracted state, the included angle between the linkage rod and the rear suspension rod is A, and when the suspension mechanism is in the extended state, the included angle between the linkage rod and the rear suspension rod is B, where B > 360° - A.

[0012] Further, the seat bracket further includes a driving mechanism capable of driving the footrest mechanism to move relative to the mounting bracket so that the footrest mechanism can be switched between the retracted state and the extended state, and the suspension mechanism can be switched between the retracted state and the extended state; a return spring connected between the seat frame mounting member and the mounting bracket, and the return spring applies an elastic force that makes the seat frame mounting member move toward the mounting bracket.

[0013] Further, two ends of the return spring are respectively connected to the seat frame mounting member and the rear suspension rod; and / or, the driving mechanism includes a linear driving member, and two ends of the linear driving member are respectively hinged to the mounting bracket and the footrest mechanism.

[0014] Further, the seat bracket further includes a first limiting member. When the suspension mechanism is in the retracted state, the front suspension rod is in limiting cooperation with the first limiting member, and / or, the seat bracket further includes a second limiting member. When the footrest mechanism is in the extended state, the footrest mechanism is in limiting cooperation with the second limiting member.

[0015] Further, the intersection point of the vertical line of the end of the footrest mechanism far from the seat frame mounting member and the extension line of the upper surface of the seat frame mounting member is C, and the lowest point of the seat bracket is D. The distance between C and D in the vertical direction is H, where 100 mm ≤ H ≤ 250 mm.

[0016] According to another aspect of the present invention, there is provided a sofa, and the sofa includes a seat bracket, and the seat bracket is the seat bracket provided above.

[0017] Further, the sofa further includes a backrest, which is arranged on the backrest mounting member and is a T-shaped backrest.

[0018] Applying the technical solution of the present invention, when the seat bracket is in the sitting position, the suspension mechanism is in the retracted state, the backrest mounting member is in the upright state, and the footrest mechanism is in the retracted state. When the seat bracket is switched from the sitting position to the TV position, the footrest mechanism is switched from the retracted state to the extended state, and the suspension mechanism remains in the retracted state. At this time, the seat frame mounting member and the backrest mounting member are fixed. When the seat bracket is switched from the TV position to the lying position, the suspension mechanism is switched from the retracted state to the extended state and drives the seat frame mounting member to move relative to the mounting bracket. At this time, since the backrest mounting member is arranged at the rear end of the seat frame mounting member, as the seat frame mounting member moves forward, the backrest mounting member will tilt backward under the linkage action and gradually switch from the upright state to the reclined state. In this process, the backrest mounting member can not only tilt, but also move relative to the mounting bracket in the front-rear direction, so that the position of the backrest mounting member relative to the mounting bracket can be more forward or backward in the reclined state, thereby effectively avoiding interference and collision between the backrest mounting member and the mounting bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specification drawings forming a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 shows a schematic structural diagram of a seat bracket provided by an embodiment of the present invention;

[0021] Figure 2 shows a schematic structural diagram of the seat bracket in the sitting position provided by an embodiment of the present invention;

[0022] Figure 3 shows a schematic structural diagram of the seat bracket in the lying position provided by an embodiment of the present invention;

[0023] Figure 4 shows a schematic structural diagram of the suspension mechanism of the seat bracket in the sitting position provided by an embodiment of the present invention;

[0024] Figure 5 shows a schematic structural diagram of the suspension mechanism of the seat bracket in the lying position provided by an embodiment of the present invention;

[0025] Figure 6 shows another schematic structural diagram of the seat bracket in the sitting position provided by an embodiment of the present invention;

[0026] Figure 7 shows Figure 6 a partial enlarged view at E in

[0027] Figure 8 Shows another schematic structural diagram of the seat bracket according to an embodiment of the present invention when in a reclined position;

[0028] Figure 9 Shows Figure 8 The partial enlarged view at position F in

[0029] Among them, the above-mentioned drawings include the following reference numerals:

[0030] 10. Mounting bracket;

[0031] 20. Seat frame mounting member;

[0032] 30. Suspension mechanism; 301. Front suspension rod; 302. Rear suspension rod;

[0033] 40. Backrest mounting member;

[0034] 50. Footrest mechanism;

[0035] 60. Backrest link mechanism; 601. First backrest link; 602. Second backrest link; 61. Linking member; 611. Linking rod;

[0036] 70. Driving mechanism; 701. Linear driving member;

[0037] 80. Return spring;

[0038] 90. First limiting member; 91. Second limiting member;

[0039] A. The included angle between the linking rod and the rear suspension rod when the suspension mechanism is in the retracted state;

[0040] B. The included angle between the linking rod and the rear suspension rod when the suspension mechanism is in the extended state;

[0041] C. The intersection point of the vertical line at the end of the footrest mechanism far from the seat frame mounting member and the extension line of the upper surface of the seat frame mounting member;

[0042] D. The lowest point of the seat bracket;

[0043] H. The distance between C and D in the vertical direction. Detailed implementation manners

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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 of the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way constitutes a limitation on the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0045] As Figures 1 to 9 shown, an embodiment of the present invention provides a seat bracket. The seat bracket includes a mounting bracket 10, a seat frame mounting member 20, a suspension mechanism 30, a backrest mounting member 40, and a footrest mechanism 50. The seat frame mounting member 20 is connected to the mounting bracket 10. The suspension mechanism 30 is disposed between the seat frame mounting member 20 and the mounting bracket 10. The suspension mechanism 30 has a retracted state and an extended state. When the suspension mechanism 30 switches between the retracted state and the extended state, the suspension mechanism 30 can drive the seat frame mounting member 20 to move relative to the mounting bracket 10. The backrest mounting member 40 is disposed at the rear end of the seat frame mounting member 20. The backrest mounting member 40 has an upright state and a reclined state relative to the seat frame mounting member 20. The footrest mechanism 50 is disposed at the front end of the seat frame mounting member 20. The footrest mechanism 50 has a retracted state and an extended state relative to the seat frame mounting member 20. Among them, when the seat frame mounting member 20 moves relative to the mounting bracket 10, the backrest mounting member 40 can switch between the upright state and the reclined state and move in the front-rear direction relative to the mounting bracket 10.

[0046] When the seat bracket provided in this embodiment is used in the sitting position, the suspension mechanism 30 is in the retracted state, the backrest mounting member 40 is in the upright state, and the footrest mechanism 50 is in the retracted state. When the seat bracket switches from the sitting position to the TV position, the footrest mechanism 50 switches from the retracted state to the extended state, and the suspension mechanism 30 remains in the retracted state. At this time, the seat frame mounting member 20 and the backrest mounting member 40 are fixed. When the seat bracket switches from the TV position to the lying position, the suspension mechanism 30 switches from the retracted state to the extended state and drives the seat frame mounting member 20 to move relative to the mounting bracket 10. At this time, since the backrest mounting member 40 is disposed at the rear end of the seat frame mounting member 20, as the seat frame mounting member 20 moves forward, the backrest mounting member 40 will tilt backward under the linkage effect and gradually switch from the upright state to the reclined state. In this process, the backrest mounting member 40 can not only tilt, but also move in the front-rear direction relative to the mounting bracket 10, so that the position of the backrest mounting member 40 relative to the mounting bracket 10 can be more forward or backward in the reclined state, thereby effectively avoiding interference and collision between the backrest mounting member 40 and the mounting bracket 10.

[0047] In this embodiment, the direction in which the footrest mechanism 50 extends is defined as the front, and the direction in which the backrest mounting member 40 faces away from the footrest mechanism 50 is defined as the back.

[0048] It should be noted that the mounting bracket 10 can be configured to include at least two structures: the first is that the mounting bracket 10 is an armrest mounting plate as shown in Figure 1 . The armrest mounting plate is mounted on the floor-standing sofa armrest, and the sofa armrest is set to the floor so as to support the mounting bracket 10 in a suspended manner above the ground; the second is that the mounting bracket 10 has its own feet or other bases, and the feet or other bases are set to the floor, thereby supporting the mounting bracket 10 in a suspended manner above the ground. In this embodiment, the mounting bracket 10 has the first structure, that is, the mounting bracket 10 is an armrest mounting plate as shown in Figure 1 .

[0049] As shown in Figure 1 , Figure 6 and Figure 8 , in this embodiment, the seat bracket further includes a backrest link mechanism 60 and a linkage member 61. The backrest mounting member 40 is connected to the seat frame mounting member 20 and the mounting bracket 10 respectively through the backrest link mechanism 60. Both ends of the linkage member 61 are connected to the backrest link mechanism 60 and the suspension mechanism 30 respectively. When the seat frame mounting member 20 moves relative to the mounting bracket 10, the backrest mounting member 40 switches between the upright state and the reclined state through the backrest link mechanism 60 and the linkage member 61 and moves relative to the mounting bracket 10 in the front-rear direction.

[0050] In this embodiment, the backrest mounting member 40 is connected to the seat frame mounting member 20 and the mounting bracket 10 respectively through the backrest link mechanism 60. When the seat bracket switches its attitude, the backrest mounting member 40 can not only achieve a change in attitude (i.e., the switch between the upright state and the reclined state), but also the backrest mounting member 40 can generate a displacement in the front-rear direction relative to the mounting bracket 10. Specifically, when the suspension mechanism 30 switches from the retracted state to the extended state, the acting force is transmitted to the backrest link mechanism 60 through the linkage member 61, thereby causing the angles of the link members of the backrest link mechanism 60 to change, so that while the backrest mounting member 40 switches from the upright state to the reclined state, it generates a displacement in the front-rear direction relative to the mounting bracket 10, thus effectively avoiding the interference and collision between the backrest mounting member 40 and the mounting bracket 10, and improving the safety and comfort of the seat bracket.

[0051] As shown in Figure 6As shown, in this embodiment, the backrest link mechanism 60 includes a first backrest link 601 and a second backrest link 602. Two ends of the first backrest link 601 are respectively hinged to the middle of the backrest mounting member 40 and the seat frame mounting member 20, and two ends of the second backrest link 602 are respectively hinged to the front end of the backrest mounting member 40 and the mounting bracket 10. The linkage member 61 includes a linkage rod 611. One end of the linkage rod 611 is hinged to the first backrest link 601 or the second backrest link 602, and the other end of the linkage rod 611 is hinged to the suspension mechanism 30. The linkage between the suspension mechanism 30 and the backrest link mechanism 60 is controlled by the linkage rod 611.

[0052] Wherein, when the seat frame mounting member 20 moves relative to the mounting bracket 10, since two ends of the first backrest link 601 are respectively hinged to the middle of the backrest mounting member 40 and the seat frame mounting member 20, and two ends of the second backrest link 602 are respectively hinged to the front end of the backrest mounting member 40 and the mounting bracket 10, the angular change of the seat frame mounting member 20 will cause the attitude switching and forward and backward movement of the backrest mounting member 40.

[0053] Specifically, a closed four-bar mechanism is formed among the linkage rod 611, the suspension mechanism 30, the second backrest link 602 and the mounting bracket 10, wherein the mounting bracket 10 remains stationary relative to the ground. When the user switches from a sitting position or a TV position to a lying position, the suspension mechanism 30 switches from a retracted state to an extended state, and the second backrest link 602 is driven by the linkage rod 611 to swing. As a result, during the process of the backrest mounting member 40 switching from an upright state to a reclined state, not only an angular change occurs, but also a displacement occurs in the front-back direction, realizing a smooth switch between the upright state and the reclined state of the backrest mounting member 40.

[0054] In this embodiment, a closed four-bar mechanism is formed among the linkage rod 611, the rear suspension rod 302 (see below), the second backrest link 602 and the mounting bracket 10.

[0055] It should be noted that the hinge in this embodiment includes two ways: direct hinge and indirect hinge. For example, the linkage rod 611 and the second backrest link 602 are directly hinged in this embodiment, and in other embodiments, an indirect hinge can be realized by adding a link or other structures between the linkage rod 611 and the second backrest link 602.

[0056] As Figure 4 and Figure 5 shown, in this embodiment, the suspension mechanism 30 includes a front suspension rod 301 and a rear suspension rod 302. The front suspension rod 301 is located in front of the rear suspension rod 302. One end of the front suspension rod 301 and one end of the rear suspension rod 302 are respectively hinged to the seat frame mounting member 20, and the other end of the front suspension rod 301 and the other end of the rear suspension rod 302 are respectively hinged to the mounting bracket 10.

[0057] Wherein, both ends of the front suspension rod 301 are respectively hinged to the seat frame mounting member 20 and the mounting bracket 10, and both ends of the rear suspension rod 302 are also respectively hinged to the seat frame mounting member 20 and the mounting bracket 10. The front suspension rod 301, the rear suspension rod 302, the mounting bracket 10 and the seat frame mounting member 20 form a closed four-bar mechanism. When the seat bracket switches from the sitting position to the TV position, the footrest mechanism 50 extends forward. Since the mounting bracket 10 remains stationary relative to the ground, under the action of gravity and pressure, the entire closed four-bar mechanism composed of the front suspension rod 301, the rear suspension rod 302, the mounting bracket 10 and the seat frame mounting member 20 tilts backward, effectively preventing the accidental forward movement of the seat frame mounting member 20 when the footrest mechanism 50 extends forward. Thus, during the opening process of the footrest mechanism 50, the seat frame mounting member 20 remains stationary, and since the backrest link mechanism 60 is hinged to the seat frame mounting member 20, the backrest link mechanism 60 also remains stationary. Thereby achieving the technical effect that only the footrest mechanism 50 extends forward during the process of the seat bracket switching from the sitting position to the TV position, and the rest of the structures remain stationary.

[0058] When the seat bracket further switches from the TV position to the lying position, at this time the footrest mechanism 50 has extended to the maximum limit position (how the footrest mechanism 50 reaches the maximum limit position will be specifically described below). The suspension mechanism 30 drives the seat frame mounting member 20 to move relative to the mounting bracket 10, and then drives the front suspension rod 301 and the rear suspension rod 302 to swing, thereby realizing the lifting of the seat frame mounting member 20, and transmitting it to the backrest mounting member 40 through the backrest link mechanism 60 and the linkage member 61, resulting in the backrest mounting member 40 switching from the upright state to the reclined state, achieving stable and smooth switching of the seat posture. At the same time, the closed four-bar mechanism composed of the front suspension rod 301, the rear suspension rod 302, the mounting bracket 10 and the seat frame mounting member 20 not only ensures the sequentiality of the seat bracket posture switching, but also avoids possible component interference problems, realizing stable and orderly switching of the seat bracket during the conversion between the sitting position, the TV position and the lying position.

[0059] As Figure 7 and Figure 9 shown, in this embodiment, one end of the linkage rod 611 is hinged to the middle of the second backrest link 602, and the other end of the linkage rod 611 is hinged to the middle of the rear suspension rod 302.

[0060] Wherein, one end of the linkage rod 611 can be hinged to the middle of the first backrest link 601 or the second backrest link 602, and the other end of the linkage rod 611 can be hinged to the seat frame mounting member 20 or the front suspension rod 301 or the rear suspension rod 302. Specifically, the connection structures at both ends of the linkage rod 611 can be arbitrarily combined pairwise as long as a closed four-bar mechanism can be formed.

[0061] In this embodiment, both ends of the linkage rod 611 are respectively hinged to the middle of the second backrest link 602 and the middle of the rear suspension rod 302, so that the linkage rod 611 can directly transmit the force of the rear suspension rod 302 to the second backrest link 602, ensuring that the force transmission during the recline or return of the backrest is more direct.

[0062] In other embodiments, one end of the linkage rod 611 is hinged to the middle of the second backrest link 602, and the other end of the linkage rod 611 can also be hinged to the middle of the front suspension rod 301; or, one end of the linkage rod 611 is hinged to the middle of the second backrest link 602, and the other end of the linkage rod 611 is hinged to the seat frame mounting member 20.

[0063] In other embodiments, one end of the linkage rod 611 can also be hinged to the middle of the first backrest link 601, and the other end of the linkage rod 611 is hinged to the middle of the rear suspension rod 302; or, one end of the linkage rod 611 is hinged to the middle of the first backrest link 601, and the other end of the linkage rod 611 is hinged to the middle of the front suspension rod 301; or, one end of the linkage rod 611 is hinged to the middle of the first backrest link 601, and the other end of the linkage rod 611 is hinged to the seat frame mounting member 20.

[0064] As Figure 7 and Figure 9 shown, in this embodiment, when the suspension mechanism 30 is in the retracted state, the included angle between the line connecting the centers of the hinge holes at both ends of the linkage rod 611 and the line connecting the center of the hinge hole in the middle of the rear suspension rod 302 and the center of the hinge hole at the lower end is A, and when the suspension mechanism 30 is in the extended state, the included angle between the line connecting the centers of the hinge holes at both ends of the linkage rod 611 and the line connecting the center of the hinge hole in the middle of the rear suspension rod 302 and the center of the hinge hole at the lower end is B, and the directions of both A and B are towards the ground. Among them, B > 360° - A.

[0065] Specifically, in this embodiment, A is a reflex angle and B is an obtuse angle.

[0066] In this embodiment, the rear suspension rod 302, the mounting bracket 10, the linkage rod 611, and the second backrest link 602 are hinged to each other to form a closed four-bar mechanism. When the seat is in the sitting position or the TV position, the included angle between the linkage rod 611 and the rear suspension rod 302 is a major angle A, and the connection line between the linkage rod 611 and the rear suspension rod 302 protrudes towards the ground direction, ensuring that when the seat bracket is in the sitting position or the TV position, the entire suspension mechanism 30 and the backrest link mechanism 60 maintain a relatively compact and stable configuration. This not only helps to reduce the thickness of the entire seat bracket in the storage state, enabling the seat bracket to occupy less space, but also can ensure the stability of the seat bracket under the action of gravity and the like. When the seat bracket is switched from the sitting position or the TV position to the lying position, the seat frame mounting member 20 moves forward, thereby driving the front suspension rod 301 and the rear suspension rod 302 to swing. At this time, the suspension mechanism 30 is switched to the extended state, and the included angle between the linkage rod 611 and the rear suspension rod 302 becomes an obtuse angle B, and the connection line between the linkage rod 611 and the rear suspension rod 302 protrudes away from the ground direction. During the posture switching process, since the second backrest link 602 tilts backward, the position of the backrest mounting member 40 is driven to move backward. Therefore, as long as it is controlled that B > 360° - major angle A, it can be ensured that the backrest mounting member 40 of the seat bracket in the lying position is in the same position or even more backward relative to the sitting position or the TV position, thereby avoiding interference between the backrest mounting member 40 and fixed components such as the armrest during the backward tilting process.

[0067] Among them, 180° < A < 360°, for example, 200°, 240°, 300°, 350°, and other values between 180° and 360°.

[0068] Among them, 0° < B < 180°, for example, 20°, 40°, 100°, 170°, and other values between 0° and 180°.

[0069] In other embodiments, the angles of A and B can be acute angles, obtuse angles, or major angles, as long as B > 360° - A and the rear suspension rod 302, the mounting bracket 10, the linkage rod 611, and the second backrest link 602 are hinged to each other to form a closed four-bar mechanism. For example, A is an acute angle and B is a major angle, or A is an obtuse angle and B is a major angle.

[0070] Such as Figure 3 As shown, in this embodiment, the seat bracket includes a drive mechanism 70, and the drive mechanism 70 can drive the footrest mechanism 50 to move relative to the mounting bracket 10, so that the footrest mechanism 50 can be switched between the retracted state and the extended state, and the suspension mechanism 30 can be switched between the storage state and the extended state.

[0071] It should be noted that there are multiple embodiments of the drive mechanism 70: 1) Single drive, connected between the mounting bracket 10 and the footrest mechanism 50, such as attached Figure 2As shown, when extending, it first drives the footrest mechanism and then the suspension mechanism; 2) Dual drive; 3) Triple drive.

[0072] In this embodiment, the drive mechanism 70 adopts a single-drive mode. The drive mechanism 70 includes a linear drive member 701, and both ends of the linear drive member 701 are respectively hinged to the mounting bracket 10 and the footrest mechanism 50. When the seat is in the sitting posture, the linear drive member 701 is in a contracted state. At this time, the footrest mechanism 50 is in a retracted state, and the suspension mechanism 30 is in a retracted state. When the user switches the seat from the sitting posture to the TV posture, the linear drive member 701 starts to extend. The hinge point of one end with the mounting bracket 10 remains unchanged, and the other end pushes the footrest mechanism 50 to extend along a predetermined trajectory, so that the footrest mechanism 50 switches from the retracted state to the extended state. This action is independent of the seat frame mounting member 20 and the backrest mounting member 40, and preferentially provides support for the legs, enhancing the comfort of using the seat. When the user switches the seat from the TV posture to the lying posture, at this time, the footrest mechanism 50 extends to the maximum limit position (how the footrest mechanism 50 reaches the maximum limit position will be specifically described below). The further extension of the linear drive member 701 drives the suspension mechanism 30 to switch from the retracted state to the extended state, and then drives the attitude change of the backrest mounting member 40. Thus, it is ensured that after the footrest mechanism 50 extends, the seat bracket can smoothly transition to the lying posture to meet the user's needs.

[0073] In other embodiments, the drive mechanism 70 can be a dual drive or a triple drive. Among them, the dual drive includes a first dual-drive mode and a second dual-drive mode. For example, the seat bracket uses the first dual-drive mode for attitude switching. The drive mechanism 70 includes a footrest drive mechanism and a suspension drive mechanism. One end of the footrest drive mechanism is connected to the seat frame mounting member 20, and the other end is connected to the footrest mechanism 50. The footrest drive mechanism independently controls the switching between the retracted state and the extended state of the footrest mechanism. One end of the suspension drive mechanism is connected to the mounting bracket 10, and the other end is connected to the seat frame mounting member 20 or the suspension mechanism 30. Since the backrest mounting member 40 is connected to the seat frame mounting plate, when the suspension drive mechanism drives the seat frame mounting member 20 to move, it will drive the backrest mounting member 40 to switch between the upright state and the reclined state and move in the front-rear direction relative to the mounting bracket 10.

[0074] Alternatively, the seat bracket uses the dual drive mode 2 to switch the posture, and the drive mechanism 70 includes a pedal drive mechanism and a backrest drive mechanism. One end of the pedal drive mechanism is connected to the mounting bracket 10, and the other end is connected to the pedal mechanism 50. One end of the backrest drive mechanism is connected to the mounting bracket 10, and the other end is connected to the first backrest connecting rod 601. When switching from a sitting position to a lying position between seats, the pedal drive mechanism drives the pedal mechanism 50 to switch from a retracted state to an extended state. When the pedal mechanism 50 extends forward to the maximum limit position, the pedal drive mechanism further drives the suspension mechanism 30 to switch from a stored state to an extended state. In this embodiment, there is no connection between the backrest mounting member 40 and the seat frame mounting member 20, and the backrest drive mechanism can independently control the backrest to switch from an upright state to a reclining state to achieve posture switching.

[0075] For another example, the seat frame uses a three-drive method to switch the posture. The drive mechanism 70 includes a pedal drive mechanism, a backrest drive mechanism and a suspension drive mechanism for switching the posture. The three drive mechanisms are controlled separately to achieve the posture switching of the seat frame.

[0076] like Figure 3 As shown, in this embodiment, the seat bracket includes a return spring 80, which is connected between the seat frame mounting member 20 and the mounting bracket 10. The return spring 80 applies an elastic force to make the seat frame mounting member 20 move toward the mounting bracket 10, and the two ends of the return spring 80 are respectively connected to the seat frame mounting member 20 and the rear suspension rod 302.

[0077] In this embodiment, the return spring 80 always applies a force to the rear suspension rod 302 in the direction of the footrest mechanism 50. When the seat support is switched from the sitting position to the TV position, the drive mechanism 70 extends and applies a force to the footrest mechanism 50, so that the footrest mechanism 50 extends forward, and the force applied by the return spring 80 to the rear suspension rod 302 can effectively prevent the rear suspension rod 302 from rotating in the direction of the footrest mechanism 50, thereby preventing the seat frame mounting member 20 from moving, ensuring that the seat frame mounting member 20 and the backrest mounting member 40 do not move. When the seat support is switched from the TV position to the lying position, since the drive mechanism 70 continues to extend, the driving force of the drive mechanism 70 resists the pulling force of the return spring 80 to drive the seat frame mounting member 20 to move, thereby driving the front suspension rod 301 and the rear suspension rod 302 to swing, thereby driving the backrest connecting rod mechanism 60 to achieve the backward tilt of the backrest mounting member 40. On the contrary, when the seat support is switched from a lying position to a sitting position, the tension exerted by the return spring 80 and the rear suspension rod 302 can assist the backrest link mechanism 60 and the seat frame mounting member 20 to be linked and recovered, and then the footrest mechanism 50 is recovered. The setting of the return spring 80 strengthens the sequential operation of the seat support, that is, when the seat support is deployed, the footrest mechanism 50 is extended first and then the backrest mounting member 40 is tilted backward, and when the seat support is retracted, the backrest mounting member 40 is returned first and then the footrest mechanism 50 is returned.

[0078] like Figure 1 and Figure 2 As shown, the seat bracket includes a first limit member 90. When the suspension mechanism 30 is in the storage state, the front suspension rod 301 is limited and cooperates with the first limit member 90. The seat bracket also includes a second limit member 91. When the footrest mechanism 50 is in the extended state, the footrest mechanism 50 is limited and cooperates with the second limit member 91.

[0079] In this embodiment, the first limiting member 90 is a first limiting boss disposed on the seat frame mounting member 20. When the seat support is in a sitting position, the first limiting member 90 abuts against the front suspension rod 301, ensuring that the suspension mechanism 30 is kept in a compact and fixed position when the seat is in a sitting position, avoiding unnecessary shaking, and enhancing the stability of the seat support. The second limiting member 91 is a second limiting boss. The second limiting member 91 can be disposed on any rod of the footrest mechanism 50, or on the seat frame mounting member 20. The second limiting member 91 is limitedly matched with at least one rod of the footrest mechanism 50. When the seat support is in a TV position, only the footrest mechanism 50 is extended, and the backrest mounting member 40 remains stationary. At this time, at least one rod of the footrest mechanism 50 abuts against the second limiting member 91, so that the footrest mechanism 50 reaches the maximum limit position. When the seat support switches from the TV position to the lying position, the driving mechanism 70 continues to extend. At this time, the footrest mechanism 50 cannot be extended due to the limiting effect of the second limiting member 91. This limited position enables the driving force of the driving mechanism 70 to further drive the seat frame mounting member 20 to move forward until the seat bracket is completely switched to a lying position. This process not only ensures the sequentiality of the posture conversion between seats, but also effectively avoids interference between components such as the footrest mechanism 50 during the movement process.

[0080] like Figure 2 As shown, in this embodiment, the intersection point of the vertical line at one end of the footrest mechanism 50 away from the seat frame mounting member 20 and the extension line of the upper surface of the seat frame mounting member 20 is C, the lowest point of the seat bracket is D, and the distance between C and D in the vertical direction is H, wherein 100mm≤H≤250mm.

[0081] In this embodiment, the vertical distance H between the intersection point of the vertical line at one end of the footrest mechanism 50 away from the seat frame mounting member 20 and the extension line of the upper surface of the seat frame mounting member 20 and the lowest point of the seat frame is set to be between 100 mm and 250 mm, which can ensure sufficient space is reserved below the horizontal line of the lowest point of the seat frame, providing conditions for the design of a high-leg sofa. When the value of H is less than 100 mm, the lowest point of the seat frame is close to the ground, restricting the net height at the bottom of the high-leg sofa and also being unfavorable for cleaning; conversely, when the value of H exceeds 250 mm, although the net height will increase, it may cause a poor contact between the footrest and the user's legs when the footrest is extended, reducing comfort. The range of 100 mm ≤ H ≤ 250 mm not only ensures the smooth operation of the footrest structure but also leaves the necessary space at the bottom of the sofa, which can not only adapt to the subsequent design of the high-leg sofa but also ensure a reasonable support space for the legs in different postures of the footrest.

[0082] Among them, the vertical distance H between C and D can be 100 mm, 150 mm, 200 mm, 250 mm, and other values between 100 mm and 250 mm.

[0083] In this embodiment, the range of H is 120 mm ≤ H ≤ 200 mm.

[0084] Another embodiment of the present invention provides a sofa, which includes a seat frame, and the seat frame is the seat frame provided above. Since the above seat frame can solve the interference and collision problem between the backrest mounting member 40 and the mounting bracket 10 when switching from the sitting position or the TV position to the lying position, the sofa with this seat frame can solve the same technical problem.

[0085] In this embodiment, the sofa further includes a backrest, the backrest is arranged on the backrest mounting member, and the backrest is a T-shaped backrest. Its unique T-shaped backrest is more in line with ergonomics. The middle part of the T-shaped backrest can well support the lumbar spine, and the horizontal part can support the back and shoulders, providing comprehensive body support for users and improving user comfort.

[0086] Among them, the sofa includes a functional sofa.

[0087] The device provided by the embodiment has the following beneficial effects:

[0088] (1) The overall position of the backrest mounting member 40 relative to the mounting bracket 10 is movable, so that when the backrest mounting member 40 falls down, the backrest mounting member 40 can move back and forth relative to the mounting bracket 10 by a larger amplitude, thereby reducing or eliminating the risk of interference between the backrest and the armrest;

[0089] (2) When the seat frame is in the sitting position, the overall thickness during storage is thinner, and it can be applied to a high-leg sofa;

[0090] (3) The entire seat bracket has a simpler structure compared to the common armrest floor bracket structure, but it can still achieve three posture switches (sitting posture, TV posture, lying posture).

[0091] (4) It relies on gravity and pressure to achieve basic sequential operation. Additionally, it relies on the return spring 80 to strengthen the sequential operation effect of the bracket: when unfolding, the footrest mechanism 50 extends first and then the backrest mounting member 40 tilts backward; when retracting, the backrest mounting member 40 returns first and then the footrest mechanism 50 returns.

[0092] 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 specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0093] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present invention. 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, such technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value 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, it does not need to be further discussed in subsequent drawings.

[0094] In the description of the present invention, it should be understood that "a plurality of" means two or more in number. Directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" generally refer to the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the directional terms "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0095] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0096] In addition, it should be noted that the use of terms such as "first", "second", etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0097] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A seat bracket, characterized in that, The seat bracket includes: A mounting bracket (10); A seat frame mounting member (20) connected to the mounting bracket (10); A suspension mechanism (30) disposed between the seat frame mounting member (20) and the mounting bracket (10). The suspension mechanism (30) has a retracted state and an extended state. When the suspension mechanism (30) switches between the retracted state and the extended state, the suspension mechanism (30) can drive the seat frame mounting member (20) to move relative to the mounting bracket (10); A backrest mounting member (40) disposed at the rear end of the seat frame mounting member (20). The backrest mounting member (40) has an upright state and a reclined state relative to the seat frame mounting member (20); A footrest mechanism (50) disposed at the front end of the seat frame mounting member (20). The footrest mechanism (50) has a retracted state and an extended state relative to the seat frame mounting member (20); Wherein, when the seat frame mounting member (20) moves relative to the mounting bracket (10), the backrest mounting member (40) can switch between the upright state and the reclined state and move in the front-rear direction relative to the mounting bracket (10).

2. The seat bracket according to claim 1, characterized in that The seat bracket further includes a backrest link mechanism (60) and a linkage member (61). The backrest mounting member (40) is connected to the seat frame mounting member (20) and the mounting bracket (10) respectively through the backrest link mechanism (60). Two ends of the linkage member (61) are respectively connected to the backrest link mechanism (60) and the suspension mechanism (30). When the seat frame mounting member (20) moves relative to the mounting bracket (10), the backrest mounting member (40) switches between the upright state and the reclined state through the backrest link mechanism (60) and the linkage member (61) and moves in the front-rear direction relative to the mounting bracket (10).

3. The seat bracket according to claim 2, wherein The backrest link mechanism (60) includes a first backrest link (601) and a second backrest link (602). Two ends of the first backrest link (601) are respectively hinged to the middle part of the backrest mounting member (40) and the seat frame mounting member (20). Two ends of the second backrest link (602) are respectively hinged to the front end of the backrest mounting member (40) and the mounting bracket (10); The linkage member (61) includes a linkage rod (611). One end of the linkage rod (611) is hinged to the first backrest link (601) or the second backrest link (602), and the other end of the linkage rod (611) is hinged to the suspension mechanism (30).

4. The seat bracket according to claim 3, characterized in that, The suspension mechanism (30) includes a front suspension rod (301) and a rear suspension rod (302). The front suspension rod (301) is located in front of the rear suspension rod (302). One end of the front suspension rod (301) and one end of the rear suspension rod (302) are respectively hinged to the seat frame mounting member (20). The other end of the front suspension rod (301) and the other end of the rear suspension rod (302) are respectively hinged to the mounting bracket (10).

5. The seat bracket according to claim 4, characterized in that, One end of the linkage rod (611) is hinged to the middle of the second backrest link (602), and the other end of the linkage rod (611) is hinged to the middle of the rear suspension rod (302).

6. The seat bracket according to claim 4, wherein, When the suspension mechanism (30) is in the retracted state, the included angle between the linkage rod (611) and the rear suspension rod (302) is A. When the suspension mechanism (30) is in the extended state, the included angle between the linkage rod (611) and the rear suspension rod (302) is B, where B > 360° - A.

7. The seat bracket according to claim 4, characterized in that, The seat bracket further includes: A drive mechanism (70) capable of driving the footrest mechanism (50) to move relative to the mounting bracket (10), so that the footrest mechanism (50) can be switched between the retracted state and the extended state, and the suspension mechanism (30) can be switched between the retracted state and the extended state; A return spring (80) connected between the seat frame mounting member (20) and the mounting bracket (10). The return spring (80) applies an elastic force that makes the seat frame mounting member (20) move towards the mounting bracket (10).

8. The seat bracket according to claim 7, characterized in that Both ends of the return spring (80) are respectively connected to the seat frame mounting member (20) and the rear suspension rod (302); and / or The drive mechanism (70) includes a linear drive member (701). Both ends of the linear drive member (701) are respectively hinged to the mounting bracket (10) and the footrest mechanism (50).

9. The seat bracket according to claim 4, characterized in that The seat bracket further includes a first limiting member (90). When the suspension mechanism (30) is in the retracted state, the front suspension rod (301) is in limiting cooperation with the first limiting member (90), and / or The seat bracket further includes a second limiting member (91). When the footrest mechanism (50) is in the extended state, the footrest mechanism (50) is in limiting cooperation with the second limiting member (91).

10. The seat bracket according to any one of claims 1 to 9, characterized in that The intersection point of the vertical line of the end of the footrest mechanism (50) far from the seat frame mounting member (20) and the extension line of the upper surface of the seat frame mounting member (20) is C, and the lowest point of the seat bracket is D. The vertical distance between C and D is H, where 100 mm ≤ H ≤ 250 mm.

11. A sofa, characterized in that, The sofa includes a seat bracket, and the seat bracket is the seat bracket according to any one of claims 1 to 10.

12. The sofa according to claim 11, characterized in that, The sofa further includes a backrest, which is arranged on the backrest mounting member (40), and the backrest is a T-shaped backrest.

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