WO2026086450A1 - Movable furniture assembly and furniture unit - Google Patents

Abstract

A movable furniture assembly, comprising: a support frame (1) configured to be supported on the ground, a back-hip assembly (2) and a leg assembly (3). The support frame (1) comprises a pair of support frame longitudinal beams (11) extending parallel to each other in a front-rear direction of the furniture assembly, and a support frame front cross beam (12) and a support frame rear cross beam (13) which extend between the support frame longitudinal beams (11). The back-hip assembly (2) comprises a back plate (21) and a back-hip linkage mechanism (23), and the back-hip linkage mechanism (23) is used to enable the back plate (21) to be obliquely lifted and lowered. The back-hip assembly (2) and the leg assembly (3) are connected to a common sliding frame (4), the sliding frame (4) is slidably supported on the support frame (1), and the back-hip linkage mechanism (23) is pivotally connected to the support frame (1) and the sliding frame (4), such that the sliding frame (4) slides relative to the support frame (1) during the process of the back plate (21) being obliquely lifted and lowered. Further provided is a furniture unit.

Description

movable furniture components and furniture units Technical Field

This application relates to a movable furniture component and furniture unit.

Background Technology

As people's living standards improve, the furniture they use in daily life is becoming more intelligent and comfortable. Electric furniture, especially electric sofas and electric folding beds, has also been widely used. For example, electric sofas are equipped with "chaise lounges" to meet people's dual needs of sitting and lying down. By installing a motor under the seat, the rotation and height of the seat are controlled, allowing the seat to be adjusted to suit people's sitting or lying postures.

However, existing furniture designs often fall short in terms of comfort and convenience. For example, either the movable parts lack flexibility in terms of posture, failing to meet the needs of various sitting and lying positions; or the mechanical structure is overly complex.

Summary of the Invention

In view of this, the technical problem that this application actually aims to solve is to provide furniture that is both ergonomically comfortable and structurally optimized.

To address the aforementioned technical problem, this application provides a movable furniture assembly, comprising: a support frame for supporting the furniture on the ground, including a pair of support frame longitudinal beams extending parallel to each other in the front-rear direction of the furniture assembly, a front support frame crossbeam and a rear support frame crossbeam extending between the support frame longitudinal beams; a backrest assembly, including at least a back panel and a backrest linkage mechanism, wherein the backrest linkage mechanism enables the back panel to tilt and lower; and a leg assembly. According to this application, the backrest assembly and the leg assembly are connected to a common sliding frame, the sliding frame being slidably supported on the support frame, wherein the backrest linkage mechanism is pivotally connected to the support frame and the sliding frame, thereby allowing the sliding frame to slide relative to the support frame during the tilting and lowering of the back panel.

The sliding frame is slidably supported on the support frame and connected to the backrest and leg components. Thus, the backrest and leg components can slide together on the support frame along with the sliding frame; simultaneously, a backrest linkage mechanism acts between the sliding frame and the support frame, thereby achieving posture changes in the back panel as the sliding frame slides along the support frame. The sliding of the sliding frame along the support frame prompts the backrest linkage mechanism to adjust the back panel without affecting the posture changes of the leg components themselves. The posture adjustments of the leg components and the backrest components are thus independent and do not affect each other. This design reduces interference between moving parts, enabling more furniture postures with a simple mechanical connection structure.

In some embodiments, the sliding frame includes a pair of sliding frame longitudinal beams extending parallel to each other in the front-rear direction of the furniture assembly, a front sliding frame crossbeam and a rear sliding frame crossbeam extending between the sliding frame longitudinal beams.

In some embodiments, the back-hip linkage mechanism includes at least a first back-hip linkage and a second back-hip linkage, wherein the first back-hip linkage is pivotally connected at its front end to the back plate and at its rear end to the sliding frame, and the second back-hip linkage is pivotally connected at its front end to the support frame and at its rear end to the middle of the first back-hip linkage.

In some embodiments, the second back-hip link is pivotally connected at its front end to the front crossbeam of the support frame.

In some embodiments, the back-hip linkage mechanism further includes a back-hip synchronization link extending perpendicular to the front-back direction of the furniture assembly and pivotally connected at both ends to the sliding frame longitudinal beam, wherein the first back-hip link is connected at its rear end to the middle of the back-hip synchronization link.

In some embodiments, the support frame longitudinal beam includes a guide groove, and the sliding frame longitudinal beam has a sliding member adapted to the guide groove, wherein the sliding member is movably supported in the guide groove, thereby realizing the sliding of the sliding frame relative to the support frame.

In one embodiment, the sliding member is configured as a roller. Alternatively, the sliding member is configured as a slider.

In some embodiments, the guide groove is oriented inward along the lateral opening of the furniture assembly.

In one embodiment, the back panel is constructed integrally.

In one alternative embodiment, the backplate is constructed in multiple pieces, comprising an upper backplate and a lower backplate interconnected. In some embodiments, the upper and lower backplates are pivotally connected, wherein the first back-hip link includes a central protrusion, the front end of which is pivotally connected to the back side of the upper backplate, and the central protrusion abuts against the back side of the lower backplate. In some embodiments, the central protrusion is configured as a roller.

The two-piece back panel can be manufactured to be longer, with the upper back panel supporting the user's head and the lower back panel supporting the user's back. The upper and lower back panels are pivotally connected to each other. To prevent accidental bending, a central protrusion, preferably constructed as a roller, is provided in the middle of the first back-hip linkage to abut against the back side of the lower back panel, preventing accidental bending of the lower and upper back panels and ensuring that they remain on the same plane even when tilted and raised.

In some embodiments, the back-hip assembly further includes a hip plate, wherein the hip plate is fixedly connected to the sliding frame.

In some embodiments, the furniture assembly includes a lumbar drive mechanism that causes the back panel to shift between a flat position and an inclined position relative to the hip panel, and causes a sliding frame to slide relative to a support frame.

In some embodiments, the waist and hip drive device acts between the support frame and the sliding frame.

In some embodiments, the lumbar and hip drive device is configured as a linear actuator, with one end connected to the rear crossbeam of the support frame and the other end connected to the front crossbeam of the sliding frame. Alternatively, the lumbar and hip drive device may also have one end connected to the rear crossbeam of the support frame and the other end connected to the rear crossbeam of the sliding frame.

In some embodiments, when the backplate changes between a flat position and an inclined position, the angle formed between the backplate and the hip plate changes by at least 60°, and in some embodiments, the angle formed between the backplates changes by at least 90°.

In some embodiments, the leg assembly includes a first leg plate, a second leg plate, and a leg linkage mechanism that enables the first and second leg plates to be raised and lowered relative to the sliding frame.

In some embodiments, the leg link assembly includes a first leg link and a second leg link, wherein the first leg link is pivotally connected to the sliding frame at its front end and to the first leg plate at its rear end, and the second leg link is pivotally connected to the sliding frame at its front end and to the second leg plate at its rear end.

In some embodiments, the leg link assembly further includes a leg synchronization link that extends perpendicular to the front-rear direction of the furniture assembly and is pivotally connected at both ends to the sliding frame longitudinal beam, wherein the first leg link is connected at its front end to the middle of the leg synchronization link.

In some embodiments, the first leg link is slidably connected to the first leg plate at its rear end.

In some embodiments, the first leg plate includes a guide portion, and the front end of the first leg link includes a guide member, which is slidably supported on the guide portion, thereby realizing a sliding connection between the first leg link and the first leg plate.

In some embodiments, the guide portion is configured as a slide rail, and the guide member is configured as a roller. Alternatively, the guide member may also be configured as a slider.

In some embodiments, the second leg link is pivotally connected at its front end to the rear crossbeam of the sliding frame.

In some embodiments, the furniture assembly further includes a leg drive mechanism that causes the leg assembly to change between an extended position and a folded position. When the leg assembly changes from the extended position to the folded position, in the folded position, the first leg plate and the second leg plate form a smaller angle than in the extended position, and the angle between the first leg plate and the sliding frame is larger than the angle between the second leg plate and the sliding frame.

In some embodiments, the leg drive device acts between the sliding frame and the leg linkage assembly.

In some embodiments, the leg drive device is configured as a linear actuator, with one end connected to the rear crossbeam of the sliding frame and the other end connected to the leg synchronization link.

In some embodiments, when changing from the extended position to the folded position, the rear end of the second leg plate is raised by at least 450 mm, preferably at least 500 mm.

This application also relates to a furniture unit that includes the aforementioned furniture components.

In some embodiments, the furniture unit is a movable sofa or a movable bed.

Attached Figure Description

The embodiments of this application are described in detail below with reference to the accompanying drawings.

Figure 1 schematically shows a side view of a movable furniture component according to the present application in a reclining position;

Figure 2 shows another side view of the furniture assembly shown in Figure 1, with the back and hip assembly in a flat position and the leg assembly in a folded position;

Figure 3 shows another side view of the furniture assembly shown in Figure 1, which is in the TV position;

Figure 4 shows another side view of the furniture assembly shown in Figure 1, in a seated position;

Figure 5 schematically shows a perspective view of a movable furniture component according to the present application in a reclining position;

Figure 6 shows another perspective view of the furniture assembly shown in Figure 1, with the back and hip assembly in a flat position and the leg assembly in a folded position.

Figure 7 shows another perspective view of the furniture component shown in Figure 1, in the TV position;

Figure 8 shows another perspective view of the furniture component shown in Figure 1, in a seated position;

Figure 9 schematically shows a top view of a furniture component according to the present application in a reclining position;

Figure 10 schematically shows another top view of the furniture assembly shown in Figure 9, in a TV position; and

Figure 11 schematically shows another top view of the furniture assembly shown in Figure 9, in a seated position.

Embodiments of the present invention

The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

The term "one embodiment" or "implementation" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and 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 a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

In the context of this application, "upper end" or "upper part" refers to the portion of furniture that is close to or facing the user; "lower end" or "lower part" refers to the portion of furniture that is close to or facing the ground; "upper surface" or "top side" refers to the surface facing the user when the bed is in normal use; "lower surface" or "back side" refers to the surface facing the ground when the bed is in normal use; "front" or "front part" refers to the portion of furniture that is close to or facing the user's head when the furniture is in use; and "rear" or "rear part" refers to the portion of furniture that is close to or facing the user's legs when the furniture is in use.

The movable furniture components shown in Figures 1 to 11 can be used for movable sofas, such as the "chaise lounge" of a modular sofa, and alternatively for beds, such as foldable beds.

The movable furniture includes a support frame 1, a lumbar and hip assembly 2 movable relative to the support frame 1, a leg assembly 3, and a sliding frame 4. The support frame 1 is fixedly supported on the ground, and the lumbar and hip assembly 2 and the leg assembly 3 are connected to the sliding frame 4, which is slidably supported on the support frame 1. The lumbar and hip assembly 2 can be switched between a flat position and a tilted position, and the leg assembly 3 can be switched between an extended position and a folded position. Thus, the bed is constructed to be able to change postures in multiple ways between a reclining position and a sitting position. As shown in Figures 1, 5, and 9, the furniture is in a reclining position, with the lumbar and hip assembly 2 in a flat position and the leg assembly 3 in an extended position. As shown in Figures 3, 7, and 10, the lumbar and hip assembly 2 is in a tilted position, and the leg assembly 3 is still in an extended position. As shown in Figures 4, 8, and 11, the furniture is in a sitting position, with the lumbar and hip assembly 2 in a tilted position and the leg assembly 3 in a folded position. As shown in Figures 2 and 6, only the leg assembly 3 is in the folded position, while the waist and hip assembly 2 remains in the flat position.

The support frame 1 includes at least two opposing and parallel longitudinal support beams 11, a front crossbeam 12 that connects the two longitudinal support beams 11 laterally, and a rear crossbeam 13. Furthermore, the support frame 1 includes at least four support legs 14. This constitutes a stable support frame, providing fixed support to the ground.

The sliding frame 4 includes two opposing and parallel sliding frame longitudinal beams 41 and a front sliding frame crossbeam 42 and a rear sliding frame crossbeam 43 that laterally connect the two sliding frame longitudinal beams 41. At least two sliding members 412 are provided on the sliding frame longitudinal beams 41. Correspondingly, the support frame longitudinal beam 11 of the support frame includes a guide groove 112 that opens laterally inward. The sliding members 412 are slidably supported in the guide groove 112, thereby allowing the sliding frame 4 to slide relative to the support frame 1. In this embodiment, the sliding members 412 are constructed as rollers, thereby reducing friction between the sliding frame 4 and the support frame 1.

The lumbar and hip assembly 2 includes a back panel 21 and a hip panel 22 arranged sequentially along the front-back direction of the furniture assembly. In this embodiment, the back panel 21 is constructed in two pieces, comprising an upper back panel 21a and a lower back panel 21b pivotally connected. In use, the upper back panel 21a supports the user's head, and the lower back panel 21b supports the user's back. The lumbar and hip assembly 2 also includes a lumbar and hip linkage mechanism 23 with multiple links. The back panel 21 is movably supported between the sliding frame 4 and the support frame 1 via the lumbar and hip linkage mechanism 23, while the hip panel 22 is fixedly installed relative to the sliding frame 4.

The waist-hip linkage structure 23 includes two opposing first waist-hip linkages 231, opposing second waist-hip linkages 232, and a waist-hip synchronization linkage 233 laterally fixedly connected between the two first waist-hip linkages 231. The first waist-hip linkage 231 is pivotally connected to the back side of the upper back plate 21a via a middle linkage 234 at its upper end, and is fixedly connected to the middle part of the waist-hip synchronization linkage 233 at its lower end. The two ends of the waist-hip synchronization linkage 233 are fixedly connected to the sliding frame longitudinal beam 41 of the sliding frame 4. In the case of a two-piece back plate 21, to prevent the upper back plate 21a and the lower back plate 21b from accidentally rotating relative to each other, the first waist-hip linkage 231 includes a central protrusion 231a, wherein the central protrusion 231a is constructed as a roller. The central protrusion 231a abuts against the back side of the lower back plate 21b, thereby keeping the upper back plate 21a and the lower back plate 21b in the same plane and preventing accidental pivoting bending. For the one-piece back plate 21, the central protrusion also serves as a reinforcement to prevent the back plate 21 from bending. The second waist-hip link 232 is pivotally connected at its front end to the front crossbeam 12 of the support frame, and at its rear end to the middle of the first waist-hip link 231.

The furniture assembly is equipped with a backrest drive device 51 for moving the back panel 21. The backrest drive device 51 can push the sliding frame 4 to slide relative to the support frame 1 in the front-back direction of the furniture assembly, and drive the backrest linkage mechanism 23, causing the back panel 21 to tilt and rise or fall as the sliding frame 4 slides relative to the support frame 1.

The lumbar and hip drive device 51 is constructed as a linear actuator, comprising a motor head and a motor actuation rod that can telescopically move relative to the motor head. The motor head is connected to the front crossbeam 42 of the sliding frame, and the motor actuation rod is connected to the rear crossbeam 13 of the support frame. Alternatively, the motor head and motor actuation rod can be installed in reverse, i.e., the motor head is connected to the rear crossbeam 13 of the support frame, and the motor actuation rod is connected to the front crossbeam 42 of the sliding frame.

In the flattened position of the waist-hip assembly 2, the waist plate 21 and hip plate 22 rest flat against the sliding frame 4, and the waist plate 21 and hip plate 22 are in the same plane, that is, the angle α between them is 180°. When the waist-hip assembly 2 changes from the flattened position to the tilted position, the motor actuator rod of the waist-hip drive device 51 extends relative to the motor, thereby pushing the front crossbeam 42 of the sliding frame forward relative to the rear crossbeam 13 of the support frame, thereby reducing the angle between the first waist-hip connecting rod 231 and the second waist-hip connecting rod 232, and causing the back plate 21 to tilt upward with its front end, thereby achieving the tilted position of the waist-hip assembly 2. In the tilted position of the waist-hip assembly 2, the angle α between the waist plate 21 and hip plate 22 can be reduced by at least 60°, preferably reduced by 90°. For example, in the tilted position of the waist-hip assembly 2, the angle α between the waist plate 21 and hip plate 22 can be 120°.

The leg assembly 3 includes a first leg plate 31 and a second leg plate 32 arranged sequentially along the front-back direction of the furniture assembly, and includes a leg linkage mechanism 33 with multiple links. The first leg plate 31 is adjacent to the hip plate 22 and roughly corresponds to the position of the user's thigh, while the second leg plate 32 corresponds to the position of the user's lower leg. The leg linkage mechanism 33 is configured to drive the first leg plate 31 and the second leg plate 32 to move relative to the sliding frame 4, thereby causing the first leg plate 31 and the second leg plate 32 to rise and fall, so that the leg assembly 3 can change between an extended position and a folded position.

The leg linkage mechanism 33 includes two opposing first leg links 331, a second leg link 322, and a leg synchronizing link 333 laterally connected between the two first leg links 331. The upper end of the first leg link 331 includes a guide 331a, which in some embodiments is configured as a roller. Correspondingly, a guide portion 311 for adaptation is provided on the back side of the first leg plate 31. The guide 331a is slidably supported on the guide portion 331. The lower end of the first leg link 331 is fixedly connected to the middle of the leg synchronizing link 333, and both ends of the leg synchronizing link 333 are pivotally connected to the sliding frame longitudinal beam 41 via pivot members. The front end of the second leg link 332 is connected to the rear crossbeam 43 of the sliding frame, and its rear end is pivotally connected to the back side of the second leg plate 32.

The furniture assembly includes a leg drive mechanism 52 for the leg assembly 3. This leg drive mechanism 52 operates independently of the lumbar drive mechanism 51, allowing the leg assembly 3 and the lumbar assembly 2 to be adjusted independently. The leg drive mechanism 52 enables the leg assembly 3 to switch between an extended position and a folded position.

The leg drive device 52 is configured as a linear actuator, comprising a motor head and a motor actuating rod that can extend and retract relative to the motor head. The motor head is connected to the rear crossbeam 43 of the sliding frame, and the motor actuating rod is connected to the leg synchronizing link 333. For this purpose, the leg synchronizing link 333 also includes an upwardly pointing protrusion 333a, with the motor head pivotally connected to the free end of the protrusion 333a, thereby driving the leg synchronizing link 333 itself to rotate, thereby causing the first leg link 331 to swing. Alternatively, the motor head and motor actuating rod can be installed in reverse, i.e., the motor head is connected to the leg synchronizing link 333, and the motor actuating rod is connected to the rear crossbeam 43 of the sliding frame.

In the extended position of the leg assembly 3, the first leg plate 31 and the second leg plate 33 lie flat against the sliding frame 4, and are positioned accordingly. When the leg assembly 3 changes from the extended position to the folded position, the motor actuator rod of the leg drive device 52 extends relative to the motor head, thereby applying a thrust to the protrusion 333a, causing the leg synchronizing link 333 to rotate and drive the first leg link 331 to swing upward, thus tilting the first leg plate 31 upward. At the same time, the second leg plate 32 rises along with the first leg plate 31, thereby achieving the folded position. In the folded position, the first leg plate 31 and the second leg plate 32 form a smaller angle than in the extended position, and the angle between the first leg plate 31 and the sliding frame 4 is larger than the angle between the second leg plate 32 and the sliding frame 4, particularly as shown in Figures 2 and 4, where the second leg plate 32 is parallel to the sliding frame 4. Furthermore, during the transition from the extended position to the folded position, the rear end of the second leg plate is raised by at least 450 mm, preferably at least 500 mm. For example, in the extended position, both the first leg plate 31 and the second leg plate 32 are in close contact with the sliding frame 4, such that the height H between the rear end of the second leg plate 32 and the sliding frame 4 is 0 mm; while in the folded position, the rear end of the first leg plate 31 is tilted upwards, thereby being raised at an angle, and the angle between the second leg plate 32 and the sliding frame 4 is significantly smaller than the angle between the first leg plate 31 and the sliding frame 4, or even the second leg plate 32 extends parallel to the sliding frame 4, wherein the height H between the rear end of the second leg plate 32 and the sliding frame 4 is 450 mm, preferably 500 mm.

As previously described, the waist and hip drive device 51 and the leg drive device 52 operate independently of each other, thereby enabling the waist and hip assembly 2 and the leg assembly 3 to change postures independently of each other.

For example, when neither the lumbar and hip drive device 51 nor the leg drive device 52 is working, the lumbar and hip assembly 2 is in a flat position, the leg assembly 3 is in an extended position, and the furniture assembly as a whole is in a reclining position as shown in Figure 1. At this time, the lumbar board 21, hip board 22, first leg board 31, and second leg board 32 are basically in the same plane.

When only the leg drive device 52 is working, the waist and hip assembly 2 remains in a flat position, while the leg assembly 3 changes to a folded position, as shown in Figure 2.

When only the waist and hip drive device 51 is working, the leg assembly 3 remains in the extended position, while the waist and hip assembly 2 changes to the tilted position, and the furniture assembly as a whole is in the TV posture position shown in Figure 3.

When both the waist and hip drive device 51 and the leg drive device 52 are working, the waist and hip assembly 2 changes to an inclined position, and the leg assembly 3 also changes to a folded position, so that the furniture assembly as a whole is in the sitting position shown in Figure 4.

Claims (31)

A movable furniture component includes: A support frame for supporting the furniture assembly on the ground includes a pair of support frame longitudinal beams extending parallel to each other in the front-rear direction of the furniture assembly, a front support frame crossbeam and a rear support frame crossbeam extending between the support frame longitudinal beams. A back and hip assembly, comprising at least a back plate and a back and hip linkage mechanism, wherein the back plate is tilted and raised and lowered by the back and hip linkage mechanism; and -Leg components The back and hip assembly and the leg assembly are characterized in that the back and hip assembly are connected to a common sliding frame, the sliding frame being slidably supported on the support frame, wherein the back and hip linkage is pivotally connected to the support frame and the sliding frame, so that the sliding frame slides relative to the support frame during the tilting and lowering of the back panel. According to claim 1, the furniture component, wherein, The sliding frame includes a pair of sliding frame longitudinal beams that extend parallel to each other in the front-rear direction of the furniture assembly, a front sliding frame crossbeam and a rear sliding frame crossbeam that extend between the sliding frame longitudinal beams. The furniture component according to claim 2, wherein, The back-hip linkage mechanism includes at least a first back-hip linkage and a second back-hip linkage, wherein the first back-hip linkage is pivotally connected to the back plate at its front end and pivotally connected to the sliding frame at its rear end, and the second back-hip linkage is pivotally connected to the support frame at its front end and pivotally connected to the middle of the first back-hip linkage at its rear end. The furniture component according to claim 3, wherein, The second back-hip link is pivotally connected at its front end to the front crossbeam of the support frame. The furniture component according to claim 3, wherein, The back-hip linkage mechanism also includes a back-hip synchronous linkage, which extends perpendicular to the front-back direction of the furniture assembly and is pivotally connected to the sliding frame longitudinal beam at both ends. The first back-hip linkage is connected to the middle of the back-hip synchronous linkage at its rear end. The furniture component according to claim 2, wherein, The supporting frame longitudinal beam includes a guide groove, and the sliding frame longitudinal beam is adapted to the guide groove by a sliding member, wherein the sliding member is movably supported in the guide groove, thereby realizing the sliding of the sliding frame relative to the supporting frame. The furniture assembly according to claim 6, wherein, The sliding component is constructed as a roller. The furniture assembly according to claim 6, wherein, The sliding component is constructed as a slider. The furniture assembly according to claim 6, wherein, The guide groove extends inward along the lateral opening of the furniture assembly. According to claim 1, the furniture component, wherein, The back panel has an integrated construction. The furniture component according to claim 3, wherein, The back panel is constructed in multiple parts, wherein the back panel includes an upper back panel and a lower back panel that are connected to each other. The furniture assembly according to claim 11, wherein, The upper back plate and the lower back plate are pivotally connected to each other. The first back-hip link includes a central protrusion. The front end of the first back-hip link is pivotally connected to the back side of the upper back plate, and the central protrusion abuts against the back side of the lower back plate. The furniture assembly according to claim 12, wherein, The central protrusion is a roller. The furniture component according to claim 2, wherein, The back and hip assembly also includes a hip plate, wherein the hip plate is fixedly connected to the sliding frame. The furniture assembly according to claim 14, wherein, The furniture component includes a lumbar drive mechanism that causes the back panel to change between a flat position and an inclined position relative to the hip panel, and causes the sliding frame to slide relative to the support frame. The furniture assembly according to claim 15, wherein, The waist and hip drive device acts between the support frame and the sliding frame. The furniture assembly according to claim 16, wherein, The waist and hip drive device is constructed as a linear actuator, with one end connected to the rear crossbeam of the support frame and the other end connected to the front crossbeam of the sliding frame. The furniture assembly according to claim 15, wherein, When the back plate changes between a flat position and an inclined position, the angle formed between the back plate and the hip plate changes by at least 60°. The furniture component according to claim 2, wherein, The leg assembly includes a first leg plate, a second leg plate, and a leg linkage mechanism, which enables the first and second leg plates to be raised and lowered relative to the sliding frame. The furniture assembly according to claim 19, wherein, The leg link assembly includes a first leg link and a second leg link, wherein the first leg link is pivotally connected to the sliding frame at its front end and to the first leg plate at its rear end, and the second leg link is pivotally connected to the sliding frame at its front end and to the second leg plate at its rear end. The furniture component according to claim 20, wherein, The leg link assembly also includes a leg synchronization link, which extends perpendicular to the front-rear direction of the furniture assembly and is pivotally connected to the sliding frame longitudinal beam at both ends, wherein the first leg link is connected at its front end to the middle of the leg synchronization link. The furniture component according to claim 20, wherein, The first leg link is slidably connected to the first leg plate at its rear end. The furniture component according to claim 22, wherein, The first leg plate includes a guide portion, and the front end of the first leg connecting rod includes a guide member. The guide member is slidably supported on the guide portion, thereby realizing the sliding connection between the first leg connecting rod and the first leg plate. The furniture component according to claim 23, wherein, The guide section is constructed as a slide rail, and the guide element is constructed as a roller. The furniture assembly according to claim 19, wherein, The second leg link is pivotally connected at its front end to the rear crossbeam of the sliding frame. According to claim 21, the furniture component, wherein, The furniture assembly also includes a leg drive mechanism that causes the leg assembly to change between an extended position and a folded position. When the leg assembly changes from the extended position to the folded position, in the folded position, the first leg plate and the second leg plate form a smaller angle than in the extended position, and the angle between the first leg plate and the sliding frame is larger than the angle between the second leg plate and the sliding frame. The furniture assembly according to claim 26, wherein, The leg drive device operates between the sliding frame and the leg linkage assembly. The furniture component according to claim 27, wherein, The leg drive device is constructed as a linear actuator, with one end connected to the rear crossbeam of the sliding frame and the other end connected to the leg synchronization link. The furniture assembly according to claim 26, wherein, When changing from the extended position to the folded position, the rear end of the second leg plate is raised by at least 450 mm. A furniture unit comprising the furniture components described in any one of the preceding claims. The furniture unit according to claim 30, wherein, The furniture unit is a movable sofa or a movable bed.