Intelligent sofa

Abstract

The utility model relates to the technical field of sofa manufacturing, in particular to an intelligent sofa, and aims to solve the technical problem that the use environment is limited due to dependence on an external power source in the prior art. The intelligent sofa comprises a chair back mechanism, a cushion mechanism, a kickstand mechanism, a linkage connecting rod and an air spring. The chair back mechanism and the kickstand mechanism are respectively hinged to two ends of the cushion mechanism. One end of the linkage connecting rod is hinged to the chair back mechanism, and the other end is hinged to the kickstand mechanism. One end of the air spring is hinged to the cushion mechanism, and the other end of the air spring is hinged to the kickstand mechanism and extends in the axis direction of the air spring to drive the chair back mechanism and the kickstand mechanism to complete sitting-lying conversion of the whole sofa. According to the intelligent sofa, the sitting and lying state conversion function independent of an external power source and an air pressure source is achieved through stretching and retracting of the air spring and sliding of the linkage connecting rod, and higher use flexibility and environmental adaptability are provided. The technical problem that the use environment is limited due to the fact that an existing sitting and lying adjusting sofa depends on an external power source is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sofa manufacturing, and particularly relates to an intelligent sofa. Background Art

[0002] Existing sitting-lying conversion sofas usually adopt power systems such as motor gear racks, motor lead screws, hydraulic rods, and pneumatic rods. These systems rely on external power sources or pneumatic sources, so there are certain limitations in use. Specifically, they cannot work properly in an environment without a power source or a pneumatic source, which limits the application of the sofa in specific occasions.

[0003] There is a technical problem that the existing sitting-lying adjustable sofas are limited in use environment due to relying on external power sources. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an intelligent sofa to solve the technical problem that the use environment is limited due to relying on external power sources in the related technologies.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model lies in:

[0006] An intelligent sofa provided by the utility model includes:

[0007] A backrest mechanism, a seat cushion mechanism, a footrest mechanism, a linkage rod, and a gas spring. The backrest mechanism and the footrest mechanism are respectively hinged to two ends of the seat cushion mechanism. One end of the linkage rod is hinged to the backrest mechanism, and the other end is hinged to the footrest mechanism. One end of the gas spring is hinged to the seat cushion mechanism, and the other end is hinged to the footrest mechanism. The gas spring can extend along its own axis direction to drive the footrest mechanism to swing in the direction of decreasing the angle with the horizontal plane; at the same time, the footrest mechanism swings to drive the linkage rod, so that the linkage rod drives the backrest mechanism to swing in the direction of decreasing the angle with the horizontal plane.

[0008] Specifically, the seat cushion mechanism includes a frame. The footrest mechanism includes a footrest board and a linkage rod assembly. The linkage rod assembly includes a first linkage rod, a second linkage rod, a third linkage rod, and a fourth linkage rod. One end of the first linkage rod and the second linkage rod are respectively hinged to the frame, and the other ends are respectively hinged to one end of the third linkage rod and the fourth linkage rod. The end of the third linkage rod far from the first linkage rod is hinged to the footrest board, and the end of the fourth linkage rod far from the second linkage rod is hinged to the footrest board. The second linkage rod and the third linkage rod intersect and are hinged to each other. The first linkage rod is hinged to the linkage rod. The gas spring is used to drive the first linkage rod to swing so that the footrest board approaches or moves away from the frame.

[0009] Specifically, the backrest mechanism includes a backrest frame. The seat cushion mechanism further includes a connecting rod, which is horizontally arranged and inserted into one end of the frame. The backrest frame is rotatably connected to the connecting rod and is hinged to the linkage rod. The linkage rod is used to drive the backrest frame to swing around the connecting rod, thereby changing the angle between the backrest frame and the horizontal plane.

[0010] Specifically, it further includes a sofa upholstery. The backrest mechanism further includes a first splint group and a second splint group, which are installed on the backrest frame. The sofa upholstery includes a deformation unit, which is made of an elastic material and installed between the first splint group and the second splint group. The first splint group and the second splint group move towards or away from each other to exert different degrees of extrusion on the deformation unit, thereby changing the shape and density of the deformation unit.

[0011] Specifically, the backrest frame includes a base plate, which is hinged to the frame. Taking the direction parallel to the base plate and perpendicular to the axis of the connecting rod as the first direction. The backrest mechanism further includes a transmission component, which includes a linkage spur gear and a rack transmission member. The linkage spur gear is rotatably connected to the base plate, and the rack transmission member is slidably connected to the base plate and meshes with the linkage spur gear. The sofa upholstery further includes a support unit, and the support unit further includes a headrest filling member, which is connected to the rack transmission member. The rotation of the linkage spur gear is used to drive the rack transmission member to move along the first direction, thereby adjusting the distance between the headrest filling member and the connecting rod.

[0012] Specifically, the transmission component further includes a first bevel gear sleeved on the connecting rod and a second bevel gear meshing with the first bevel gear. The first bevel gear does not rotate relative to the frame, and the second bevel gear is coaxially arranged with the linkage spur gear and rotates synchronously with the linkage spur gear. When the base plate swings, the second bevel gear meshes with the first bevel gear and rotates to drive the linkage spur gear to rotate, and further drive the rack transmission member to move along the first direction.

[0013] Specifically, the first splint group includes a first pressing plate and a first spur gear, and the second splint group includes a first auxiliary pressing plate and a second spur gear. The direction perpendicular to the first direction and parallel to the substrate is defined as the second direction. The first pressing plate and the first auxiliary pressing plate are arranged along the second direction and are respectively disposed on both sides of the substrate. The deformation unit includes a lumbar cushion filler disposed between the first pressing plate and the first auxiliary pressing plate. The first pressing plate is provided with a first rack extending along the second direction, and the first auxiliary pressing plate is provided with a second rack extending along the second direction. The first spur gear and the second spur gear are rotatably connected to the substrate, and the first spur gear and the second spur gear are respectively engaged with the first rack and the second rack and are simultaneously engaged with the rack transmission member. The rack transmission member is configured to drive the first spur gear and the second spur gear to rotate, thereby driving the first pressing plate and the first auxiliary pressing plate to move towards or away from each other, and further changing the shape and density of the lumbar cushion filler.

[0014] Specifically, the backrest frame further includes a support plate parallel to the substrate. The first splint group includes a second pressing plate mounted on the rack transmission member, and the second splint group includes a second auxiliary pressing plate mounted on the support plate. The deformation unit further includes a backrest filler disposed between the second pressing plate and the second auxiliary pressing plate. The rack transmission member is configured to drive the second pressing plate to approach or move away from the second auxiliary pressing plate to change the shape and density of the backrest filler.

[0015] Specifically, both the lumbar cushion filler and the backrest filler are disposed on the side of the support plate away from the substrate. The support plate is provided with a first notch and a second notch. The first pressing plate is provided with a longitudinal plate that penetrates through the support plate and abuts against the lumbar cushion filler. The first pressing plate and the first auxiliary pressing plate are configured as mirror images. The two longitudinal plates are respectively slidably connected to the two first notches to apply extrusion to the lumbar cushion filler. The second pressing plate is slidably connected to the second notch to apply extrusion to the backrest filler.

[0016] Specifically, the transmission assembly further includes a filling block. The first pressing plate is further provided with a transverse plate perpendicularly connected to the longitudinal plate and fitting against the support plate. The first pressing plate and the first auxiliary pressing plate are configured as mirror images. The filling block is mounted on the rack transmission member.

[0017] Specifically, the footrest mechanism includes a footrest plate and a linkage assembly. The linkage assembly includes a first linkage, a second linkage, a third linkage, and a fourth linkage. One end of the first linkage and the second linkage are respectively hinged to the frame, and the other ends are respectively hinged to one end of the third linkage and the fourth linkage. The end of the third linkage away from the first linkage is hinged to the footrest plate, and the end of the fourth linkage away from the second linkage is hinged to the footrest plate. The second linkage and the third linkage cross and are hinged to each other, and the first linkage is hinged to the linkage link. The support unit further includes a footrest filler, and the footrest filler is installed on the footrest plate. The gas spring is used to drive the first linkage to swing so that the footrest filler approaches or moves away from the frame.

[0018] Based on the above technical solutions, the beneficial effects of the present utility model are analyzed as follows:

[0019] The present utility model provides an intelligent sofa, including:

[0020] A backrest mechanism, a seat cushion mechanism, a footrest mechanism, a linkage link, and a gas spring. The backrest mechanism and the footrest mechanism are respectively hinged to both ends of the seat cushion mechanism. One end of the linkage link is hinged to the backrest mechanism, and the other end is hinged to the footrest mechanism. One end of the gas spring is hinged to the seat cushion mechanism, and the other end is hinged to the footrest mechanism. The gas spring can extend along its own axis direction to drive the footrest mechanism to swing in the direction of decreasing the angle with the horizontal plane; at the same time, the footrest mechanism swings to drive the linkage link, so that the linkage link drives the backrest mechanism to swing in the direction of decreasing the angle with the horizontal plane.

[0021] In specific applications, when the intelligent sofa is in the sitting position, the gas spring extends to drive the footrest mechanism to swing in the direction of decreasing the angle with the horizontal plane; at the same time, the footrest mechanism swings to drive the linkage link, so that the linkage link drives the backrest mechanism to swing in the direction of decreasing the angle with the horizontal plane. Without relying on external power, the conversion between the sitting and lying states is realized.

[0022] It can be seen that compared with the prior art, this intelligent sofa realizes the function of converting the sitting and lying states independent of external power sources and air pressure sources through the telescopic movement of the gas spring and the sliding of the linkage link, providing higher flexibility in use and environmental adaptability. It overcomes the technical problem that the existing sitting-lying adjustable sofas are limited in use environment due to relying on external power sources. Description of the Drawings

[0023] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the overall structure of the intelligent sofa in the sitting posture state Figure 1 ;

[0025] Figure 2 Schematic diagram of the overall structure of the intelligent sofa in the sitting posture state Figure 2 ;

[0026] Figure 3 Schematic diagram of the overall structure of the intelligent sofa in the lying posture state Figure 1 ;

[0027] Figure 4 Schematic diagram of the overall structure of the intelligent sofa in the lying posture state Figure 2 ;

[0028] Figure 5 Schematic diagram of the overall structure of the intelligent sofa after removing the sofa cushion;

[0029] Figure 6 Schematic diagram of the sectional structure at the gas spring in the lying posture state;

[0030] Figure 7 Schematic diagram of the sectional structure at the transmission component in the lying posture state;

[0031] Figure 8 Schematic diagram of the structure at the transmission component in the sitting posture state;

[0032] Figure 9 Partial enlarged sectional view of the first splint group in the sitting posture state.

[0033] Icon:

[0034] 100, backrest mechanism; 110, backrest frame; 111, base plate; 1111, guiding rail; 112, support plate; 101, first notch; 102, second notch; 120, first splint group; 121, first pressing plate; 1611, first rack; 1612, vertical plate; 1613, horizontal plate; 122, first spur gear; 123, second pressing plate; 130, second splint group; 131, first auxiliary pressing plate; 1311, second rack; 132, second spur gear; 133, second auxiliary pressing plate; 140, transmission component; 141, linkage spur gear; 142, rack transmission part; 143, first bevel gear; 144, second bevel gear; 145, filling block;

[0035] 200, Seat Cushion Mechanism; 210, Frame; 201, Slide Groove; 220, Connecting Rod;

[0036] 300, Footrest Mechanism; 310, Footrest Plate; 320, Link Assembly; 321, First Link; 322, Second Link; 323, Third Link; 324, Fourth Link;

[0037] 400, Linkage Link;

[0038] 500, Gas Spring;

[0039] 600, Sofa Upholstery; 610, Deformation Unit; 611, Lumbar Pillow Filling; 612, Backrest Filling; 620, Support Unit; 621, Headrest Filling; 622, Footrest Filling; 623, Seat Cushion Filling;

[0040] 700, Armrest. Detailed Embodiment

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0043] The following will describe in detail some embodiments of the present utility model in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0044] Existing sitting and lying adjustable sofas have the technical problem that the use environment is limited due to dependence on an external power source.

[0045] In view of this, the present utility model provides an intelligent sofa, including:

[0046] A backrest mechanism 100, a seat cushion mechanism 200, a footrest mechanism 300, a linkage rod 400 and a gas spring 500. The backrest mechanism 100 and the footrest mechanism 300 are respectively hinged to both ends of the seat cushion mechanism 200. One end of the linkage rod 400 is hinged to the backrest mechanism 100, and the other end is hinged to the footrest mechanism 300. One end of the gas spring 500 is hinged to the seat cushion mechanism 200, and the other end is hinged to the footrest mechanism 300. The gas spring 500 can extend along its own axis direction to drive the footrest mechanism 300 to swing in the direction of decreasing the included angle with the horizontal plane; at the same time, the footrest mechanism 300 swings to drive the linkage rod 400, so that the linkage rod 400 drives the backrest mechanism 100 to swing in the direction of decreasing the included angle with the horizontal plane.

[0047] Combining the above technical solutions, the intelligent sofa provided by the present utility model can achieve the following technical effects:

[0048] Through the telescopic movement of the gas spring 500 and the sliding of the linkage rod 400, the intelligent sofa realizes the function of converting the sitting and lying states independently of external power sources and air pressure sources, providing higher flexibility in use and environmental adaptability. It overcomes the technical problem of the existing sitting and lying adjustable sofas that the use environment is limited due to dependence on external power sources.

[0049] The following combines Figures 1 to 9 to detail the structure and shape of an intelligent sofa provided in this embodiment:

[0050] Regarding the structural composition of the footrest mechanism 300, specifically:

[0051] The footrest mechanism 300. The footrest mechanism 300 includes a footrest plate 310 and a linkage component 320. The seat cushion mechanism 200 includes a frame 210. The linkage component 320 includes a first linkage 321, a second linkage 322, a third linkage 323 and a fourth linkage 324. One end of the first linkage 321 and the second linkage 322 are respectively hinged to the frame 210, and the other ends are respectively hinged to one end of the third linkage 323 and the fourth linkage 324. The end of the third linkage 323 far from the first linkage 321 is hinged to the footrest plate 310, and the end of the fourth linkage 324 far from the second linkage 322 is hinged to the footrest plate 310. The second linkage 322 and the third linkage 323 intersect and are hinged, and the first linkage 321 is hinged to the linkage rod 400. The gas spring 500 is used to drive the first linkage 321 to swing, so that the footrest plate 310 approaches or moves away from the frame 210.

[0052] Regarding how the backrest mechanism 100 realizes tilting, specifically:

[0053] The backrest mechanism 100 includes a backrest frame 110. The cushion mechanism 200 also includes a connecting rod 220, which is horizontally arranged and inserted into one end of the frame 210. The backrest frame 110 is rotatably connected to the connecting rod 220 and is hinged to the linkage link 400. The linkage link 400 is used to drive the backrest frame 110 to swing around the connecting rod 220, thereby changing the angle between the backrest frame 110 and the horizontal plane.

[0054] In order to adjust the shape and hardness of the backrest, in the solution of this embodiment, the smart sofa also includes a sofa soft bag 600. The backrest mechanism 100 also includes a first plywood group 120 and a second plywood group 130, and the first plywood group 120 and the second plywood group 130 are installed on the backrest frame 110. The sofa soft bag 600 includes a deformation unit 610, which is set to an elastic material and installed between the first plywood group 120 and the second plywood group 130. The first plywood group 120 and the second plywood group 130 move toward or away from each other to produce different degrees of compression on the deformation unit 610, thereby changing the shape and density of the deformation unit 610.

[0055] How does the chair back mechanism 100 achieve the change in the overall length of the chair back? Specifically:

[0056] The backrest frame 110 includes a base plate 111, which is hinged to the frame 210. The direction parallel to the base plate 111 and perpendicular to the axis of the connecting rod 220 is the first direction. The backrest mechanism 100 also includes a transmission assembly 140, which includes a linkage spur gear 141 and a rack transmission member 142. The backrest frame 110 also includes a sliding guide rail, which is installed on the base plate 111, and the linkage spur gear 141 is rotatably connected to the base plate 111. The rack transmission member 142 is slidably connected to the sliding guide rail and meshes with the linkage spur gear 141. Among them, the sliding guide rail guides the sliding of the rack transmission member 142, thereby enhancing the sliding stability. The rotation of the linkage spur gear 141 is used to drive the rack transmission member 142 to move along the first direction.

[0057] How the rack transmission member 142 drives the first clamping plate group 120 and the second clamping plate group 130 to switch the entire chair back between the sitting position and the lying position is described in detail:

[0058] The backrest frame 110 further includes a guiding rail 1111 which is installed on the base plate 111. The first splint group 120 includes a first pressing plate 121, a first spur gear 122 and a second pressing plate 123. The second splint group 130 includes a first auxiliary pressing plate 131, a second spur gear 132 and a second auxiliary pressing plate 133. The backrest frame 110 further includes a support plate 112 parallel to the base plate 111. Taking the direction perpendicular to the first direction and parallel to the base plate 111 as the second direction, the first pressing plate 121 and the first auxiliary pressing plate 131 are arranged along the second direction and are respectively disposed on both sides of the base plate 111. Among them, both the first pressing plate 121 and the first auxiliary pressing plate 131 slide on the guiding rail 1111, enhancing the sliding stability of the first pressing plate 121 and the first auxiliary pressing plate 131. The deformation unit 610 includes a lumbar cushion filling member 611 and a backrest filling member 612. The lumbar cushion filling member 611 is disposed between the first pressing plate 121 and the first auxiliary pressing plate 131. The first pressing plate 121 is provided with a first rack 1611 extending along the second direction, and the first auxiliary pressing plate 131 is provided with a second rack 1311 extending along the second direction. The first spur gear 122 and the second spur gear 132 are rotatably connected to the base plate 111. The first spur gear 122 and the second spur gear 132 are respectively engaged with the first rack 1611 and the second rack 1311 and are simultaneously engaged with a rack transmission member 142. The rack transmission member 142 is used to drive the first spur gear 122 and the second spur gear 132 to rotate so as to drive the first pressing plate 121 and the first auxiliary pressing plate 131 to move towards or away from each other. The second pressing plate 123 is installed on the rack transmission member 142, and the second auxiliary pressing plate 133 is installed on the support plate 112. The rack transmission member 142 is used to drive the second pressing plate 123 to approach or move away from the second auxiliary pressing plate 133; the backrest filling member 612 is disposed between the second pressing plate 123 and the second auxiliary pressing plate 133. The sofa upholstery 600 further includes a support unit 620, and the support unit 620 further includes a headrest filling member 621 which is disposed at one end of the rack transmission member 142 away from the connecting rod 220. The rack transmission member 142 is used to drive the headrest filling member 621 to approach or move away from the connecting rod 220. Among them, the lumbar cushion filling member 611, the backrest filling member 612 and the headrest filling member 621 are all filled with elastic materials, and latex, high-resilience sponge, etc. can be selected.

[0059] As the intelligent sofa switches from the lying state to the sitting state, during the process that the rack transmission member 142 slides along the first direction and approaches the connecting rod 220, the first pressing plate 121 and the first auxiliary pressing plate 131 move towards each other to squeeze the lumbar cushion filling member 611. The density of the lumbar cushion filling member 611 increases and bulges away from the support plate 112; the second pressing plate 123 approaches the second auxiliary pressing plate 133 to squeeze the backrest cushion filling member 612. The density of the backrest cushion filling member 612 increases and bulges away from the support plate 112; the headrest filling member 621 approaches the connecting rod 220, and the overall length of the chair back shortens to adapt to the shorter upper body proportion of the human body in the sitting position and the requirements of posture stability and long-term comfort.

[0060] Regarding how the chair back mechanism 100 and the linkage connecting rod 400 achieve power transmission, specifically:

[0061] The transmission assembly 140 further includes a first bevel gear 143 sleeved on the connecting rod 220 and a second bevel gear 144 meshing with the first bevel gear 143. The connecting rod 220 is fixedly connected to the first bevel gear 143 and the frame 210 through set screws. The first bevel gear 143 does not rotate relative to the frame 210. The second bevel gear 144 is coaxially arranged with the linkage spur gear 141 and rotates synchronously with the linkage spur gear 141. When the linkage connecting rod 400 drives the base plate 111 to swing around the connecting rod 220, the second bevel gear 144 meshes with the first bevel gear 143 and rotates to drive the linkage spur gear 141 to rotate, and further drives the rack transmission member 142 to move along the first direction. As the intelligent sofa switches from the sitting state to the lying state, the rack transmission member 142 slides along the first direction and moves away from the connecting rod 220.

[0062] In the solution of this embodiment, in the sitting state of the intelligent sofa, the stiffness of the backrest cushion filling member 612 is greater than that of the lumbar cushion filling member 611 to maintain a stable sitting posture, reduce back muscle tension and maintain the structural stability; the protruding size of the lumbar cushion filling member 611 is greater than that of the backrest cushion filling member 612 to adapt to the natural curve of the waist, disperse the waist pressure, and promote blood circulation, so as to provide more comfortable support.

[0063] In order to further optimize the shaping accuracy of the lumbar cushion filling member 611 and the backrest cushion filling member 612 in the sitting state, in the solution of this embodiment, the sofa upholstery 600 further includes a shaping layer; the shaping layer is installed on the chair back frame 110 and covers the lumbar cushion filling member 611 and the backrest cushion filling member 612. The shape of the shaping layer is consistent with the curve of the human back and is set as a soft material without ductility to limit the protruding shape and size of the lumbar cushion filling member 611 and the backrest cushion filling member 612 in the sitting state. Among them, the soft material without ductility can be set as PU leather, flocking fabric, etc.

[0064] Regarding how the lumbar cushion filler 611 and the backrest filler 612 avoid interfering with the operation of the transmission assembly 140, specifically:

[0065] Both the lumbar cushion filler 611 and the backrest filler 612 are arranged on the side of the support plate 112 away from the base plate 111. The support plate 112 is provided with a first notch 101 and a second notch 102. The first pressing plate 121 is provided with a vertical plate 1612, and the vertical plates 1612 penetrate through the support plate 112 and abut against the lumbar cushion filler 611. The first pressing plate 121 and the first auxiliary pressing plate 131 are set as mirror images. The two vertical plates 1612 are respectively slidably connected to the two first notches 101 to exert extrusion on the lumbar cushion filler 611. The second pressing plate 123 is slidably connected to the second notch 102 to exert extrusion on the backrest filler 612.

[0066] In order to prevent the lumbar cushion filler 611 and the backrest filler 612 from passing through the first notch 101 and the second notch 102, in the solution of this embodiment, the transmission assembly 140 further includes a filling block 145, and the filling block 145 is installed on the rack transmission member 142. A guiding rail 1111 is provided on the base plate 111, and the first pressing plate 121 and the first auxiliary pressing plate 131 are slidably connected to the guiding rail 1111. Among them, the guiding rail 1111 further improves the sliding stability of the first pressing plate 121 and the first auxiliary pressing plate 131. The first pressing plate 121 is further provided with a horizontal plate 1613, and the horizontal plate 1613 is vertically connected to the vertical plate 1612 and abuts against the side of the support plate 112 close to the base plate 111. The first pressing plate 121 and the first auxiliary pressing plate 131 are set as mirror images. As the first pressing plate 121 and the first auxiliary pressing plate 131 move away from each other, the two horizontal plates 1613 gradually cover the two first notches 101. As the rack transmission member 142 slides away from the connecting rod 220 along the first direction, the filling block 145 gradually covers the second notch 102. When the intelligent sofa is in the lying position, that is, when the distance between the first pressing plate 121 and the first auxiliary pressing plate 131 reaches the maximum value, the two horizontal plates 1613 completely cover the two first notches 101 to prevent the lumbar cushion filler 611 from getting stuck in the first notch 101 in the lying position, and at the same time the filling block 145 completely covers the second notch 102 to prevent the backrest filler 612 from getting stuck in the second notch 102 in the lying position.

[0067] In the solution of this embodiment, the support unit 620 further includes a footrest filler 622 and a seat cushion filler 623. The footrest filler 622 is installed on the footrest plate 310, and the seat cushion filler 623 is installed on the frame 210. Among them, both the footrest filler 622 and the seat cushion filler 623 are made of elastic material fillers, and latex, high-resilience sponge, etc. can be selected.

[0068] To prevent the exposed mechanical structure from being jammed or damaged by debris in the external environment, in the solution of this embodiment, the smart sofa further includes an outer cover. The outer cover is sleeved on the backrest mechanism 100, the sofa cushion 600, and the seat cushion mechanism 200 to improve the running stability and safety of the smart sofa.

[0069] To increase the support for the arms, in the solution of this embodiment, the smart sofa further includes an armrest 700. A chute 201 is formed in the frame 210 along the length direction. The armrest 700 passes through the chute 201 and is connected to the linkage rod 400. The movement of the linkage rod 400 is used to drive the armrest 700 to slide along the chute 201.

[0070] In summary, the specific working process of a smart sofa provided in this embodiment is as follows:

[0071] When the smart sofa is in the lying position, the length of the gas spring 500 reaches the maximum value, the armrest 700 is located at the forefront of the chute 201, the included angle between the backrest frame 110 and the horizontal plane reaches the minimum value, and the link assembly 320 extends to drive the footrest filler 622 to be flush with the seat cushion filler 623. The distance between the headrest filler 621 and the connecting rod 220 reaches the maximum value, and the distance between the second pressing plate 123 and the second sub-pressing plate 133 reaches the maximum value. The distance between the first pressing plate 121 and the first sub-pressing plate 131 reaches the maximum value, and the degree of extrusion of the backrest filler 612 and the lumbar cushion filler 611 is the smallest. The backrest as a whole presents a long flat soft elastic pad to meet the support requirements in the lying position.

[0072] When it is necessary to switch the intelligent sofa from the lying state to the sitting state, the user lying on the intelligent sofa opens the gas spring 500 through a switch and clamps the footrest plate 310 to make the gas spring 500 contract and reset. The first connecting rod 321 swings in the opposite direction to fold and contract the connecting rod assembly 320, thereby driving the footrest filling member 622 to retract towards the frame 210. At the same time, the first connecting rod 321 swings to drive the linkage connecting rod 400 to slide, thereby driving the substrate 111 to swing around the connecting rod 220 in the direction of decreasing the angle with the horizontal plane. The first bevel gear 143 is fixed to the frame 210, and the second bevel gear 144 rotates under the reaction force of the first bevel gear 143 during the swing of the substrate 111, thereby driving the coaxial linkage spur gear 141, and further driving the rack transmission member 142 to slide along the first direction towards the connecting rod 220. The rack transmission member 142 drives the headrest filling member 621 to slide close to the connecting rod 220 along the first direction, and the overall length of the backrest is shortened to adapt to the shorter upper body proportion of the human body in the sitting position. The rack transmission member 142 drives the second pressure plate 123 to approach the second secondary pressure plate 133, and the backrest filling member 612 is squeezed, resulting in an increase in density and an increase in elastic modulus. At the same time, a convex deformation occurs in the direction away from the support plate 112. The rack transmission member 142 drives the first pressure plate 121 and the first secondary pressure plate 131 to move towards each other by meshing the first rack 1611 and the second rack 1311 through the first spur gear 122 and the second spur gear 132, and the lumbar support filling member 611 is squeezed, resulting in an increase in density and an increase in elastic modulus, and a convex deformation occurs in the direction away from the support plate 112. The convex height of the lumbar support filling member 611 is greater than the convex height of the backrest filling member 612, and the overall backrest shows a compact and hard elastic undulation. Under the restriction of the shaping layer, the undulation shape is consistent with the back curve to meet the support requirements in the sitting position.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A smart sofa, characterized in that: include: A chair back mechanism (100), a seat cushion mechanism (200), a foot support mechanism (300), a linkage rod (400) and a gas spring (500); The chair back mechanism (100) and the foot support mechanism (300) are respectively hinged to two ends of the seat cushion mechanism (200); One end of the linkage link (400) is hinged to the chair back mechanism (100), and the other end is hinged to the foot support mechanism (300); One end of the gas spring (500) is hinged to the seat cushion mechanism (200), and the other end is hinged to the foot support mechanism (300); The gas spring (500) can extend along its own axial direction to drive the foot support mechanism (300) to swing in a direction in which the angle with the horizontal plane decreases; at the same time, the foot support mechanism (300) swings to drive the linkage rod (400), so that the linkage rod (400) drives the chair back mechanism (100) to swing in a direction in which the angle with the horizontal plane decreases.

2. The smart sofa according to claim 1, characterized in that: The seat cushion mechanism (200) comprises a frame (210); The foot support mechanism (300) comprises a foot support plate (310) and a connecting rod assembly (320); The connecting rod assembly (320) includes a first connecting rod (321), a second connecting rod (322), a third connecting rod (323) and a fourth connecting rod (324); One end of the first connecting rod (321) and the second connecting rod (322) are respectively hinged to the frame (210), and the other end is respectively hinged to one end of the third connecting rod (323) and the fourth connecting rod (324); One end of the third connecting rod (323) away from the first connecting rod (321) is hinged to the foot support plate (310), and one end of the fourth connecting rod (324) away from the second connecting rod (322) is hinged to the foot support plate (310); The second connecting rod (322) and the third connecting rod (323) are intersected and hinged with each other, and the first connecting rod (321) is hinged with the linkage connecting rod (400); The gas spring (500) is used to drive the first connecting rod (321) to swing so that the foot support plate (310) moves closer to or farther away from the frame (210).

3. The smart sofa according to claim 2, characterized in that: The chair back mechanism (100) comprises a chair back frame (110); The seat cushion mechanism (200) further comprises a connecting rod (220); The connecting rod (220) is horizontally arranged and inserted into one end of the frame (210); The chair back frame (110) is rotatably connected to the connecting rod (220) and is hinged to the linkage connecting rod (400); The linkage link (400) is used to drive the chair back frame (110) to swing around the connecting rod (220), thereby changing the angle between the chair back frame (110) and a horizontal plane.

4. The smart sofa according to claim 3, characterized in that: Also includes sofa upholstery (600); The chair back mechanism (100) further comprises a first clamping plate group (120) and a second clamping plate group (130); The first clamping plate group (120) and the second clamping plate group (130) are installed on the chair back frame (110); The sofa soft cover (600) comprises a deformation unit (610); The deformation unit (610) is made of elastic material and installed between the first clamping plate group (120) and the second clamping plate group (130); The first clamping plate group (120) and the second clamping plate group (130) move toward or away from each other to exert different degrees of compression on the deformation unit (610), thereby changing the shape and density of the deformation unit (610).

5. The smart sofa according to claim 4, characterized in that: The chair back frame (110) comprises a base plate (111); The base plate (111) is hinged to the frame (210); A direction parallel to the substrate (111) and perpendicular to the axis of the connecting rod (220) is defined as a first direction; The chair back mechanism (100) further includes a transmission assembly (140); The transmission assembly (140) comprises a linkage spur gear (141) and a rack transmission member (142); The linkage spur gear (141) is rotatably connected to the base plate (111); The rack transmission member (142) is slidably connected to the base plate (111) and meshes with the linkage spur gear (141); The sofa soft cover (600) further includes a supporting unit (620); The support unit (620) further includes a headrest filling piece (621); The headrest filling member (621) is connected to the rack transmission member (142); The rotation of the linkage spur gear (141) is used to drive the rack transmission member (142) to move along the first direction, thereby adjusting the distance between the headrest filling member (621) and the connecting rod (220).

6. The smart sofa according to claim 5, characterized in that: The transmission assembly (140) further comprises a first bevel gear (143) sleeved on the connecting rod (220) and a second bevel gear (144) meshed with the first bevel gear (143); The first bevel gear (143) and the frame (210) do not rotate relative to each other; The second bevel gear (144) is coaxially arranged with the linkage spur gear (141) and rotates synchronously with the linkage spur gear (141); When the base plate (111) swings, the second bevel gear (144) meshes with the first bevel gear (143) and rotates, thereby driving the linkage spur gear (141) to rotate, and further driving the rack transmission member (142) to move along the first direction.

7. The smart sofa according to claim 6, characterized in that: The first clamping plate group (120) comprises a first pressing plate (121) and a first spur gear (122); The second clamping plate group (130) comprises a first auxiliary clamping plate (131) and a second spur gear (132); A direction perpendicular to the first direction and parallel to the substrate (111) is defined as a second direction; The first pressing plate (121) and the first auxiliary pressing plate (131) are arranged along the second direction and are respectively arranged on both sides of the base plate (111); The deformation unit (610) comprises a lumbar support filling piece (611); The lumbar support filling piece (611) is arranged between the first pressing plate (121) and the first auxiliary pressing plate (131); The first pressing plate (121) is provided with a first rack (1611) extending along the second direction; The first auxiliary pressing plate (131) is provided with a second rack (1311) extending along the second direction; The first spur gear (122) and the second spur gear (132) are rotatably connected to the base plate (111); The first spur gear (122) and the second spur gear (132) are respectively meshed with the first rack (1611) and the second rack (1311) and are simultaneously meshed with the rack transmission member (142); The rack transmission member (142) is used to drive the first spur gear (122) and the second spur gear (132) to rotate, thereby driving the first pressure plate (121) and the first auxiliary pressure plate (131) to move toward or away from each other, thereby changing the shape and density of the lumbar support filling member (611).

8. The smart sofa according to claim 7, characterized in that: The chair back frame (110) further includes a support plate (112) parallel to the base plate (111); The first clamping plate group (120) comprises a second pressing plate (123), and the second pressing plate (123) is mounted on the rack transmission member (142); The second clamping plate group (130) comprises a second auxiliary clamping plate (133), and the second auxiliary clamping plate (133) is installed on the supporting plate (112); The deformation unit (610) further includes a back-filling member (612); The backing filling piece (612) is arranged between the second pressing plate (123) and the second auxiliary pressing plate (133); The rack transmission member (142) is used to drive the second pressing plate (123) to move closer to or farther away from the second auxiliary pressing plate (133) so as to change the shape and density of the back-supporting filling member (612).

9. The smart sofa according to claim 8, characterized in that: The waist support filling piece (611) and the back support filling piece (612) are both arranged on a side of the support plate (112) away from the base plate (111); The support plate (112) is provided with a first notch (101) and a second notch (102); The first pressing plate (121) is provided with a longitudinal plate (1612); The longitudinal plates (1612) all penetrate the support plate (112) and abut against the waist support filling piece (611); The first pressing plate (121) and the first auxiliary pressing plate (131) are configured as mirror images; The two longitudinal plates (1612) are respectively slidably connected to the two first notches (101) to apply pressure to the lumbar support filling member (611); The second pressing plate (123) is slidably connected to the second notch (102) to apply pressure to the back filler (612).

10. The smart sofa according to claim 9, characterized in that: The transmission assembly (140) further includes a filling block (145); The first pressing plate (121) is further provided with a transverse plate (1613); The transverse plate (1613) is vertically connected to the longitudinal plate (1612) and is attached to the support plate (112); The first pressing plate (121) and the first auxiliary pressing plate (131) are configured as mirror images; The filling block (145) is installed on the rack transmission member (142); As the first pressing plate (121) and the first auxiliary pressing plate (131) move away from each other, the two transverse plates (1613) gradually cover the two first notches (101) respectively; As the rack transmission member (142) slides away from the connecting rod (220) along the first direction, the filling block (145) gradually covers the second notch (102).

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