Electric sofa and control method

Abstract

The invention discloses an electric sofa and a control method, the electric sofa comprises a left armrest, a right armrest, at least one backrest, at least one foot plate, a seat frame and a bottom frame, the seat frame and the bottom frame are fixedly connected between the left armrest and the right armrest, and the seat frame is located right above the bottom frame; the electric sofa also comprises at least one movable assembly, the movable assembly is connected with the backrest, is movably connected with the seat frame and the foot plate, and is movably connected with the bottom frame; the movable assembly is provided with a driving unit, and the movable assembly is driven by the driving unit to move back and forth relative to the bottom frame so that the movable assembly can be in linkage with the backrest and the foot plate. Compared with a traditional sofa iron stand, a middle conversion mechanism is omitted, the driving mode is more direct, and the efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of smart home, in particular to an electric sofa and a control method thereof. Background Art

[0002] Electric sofas have been widely used in the market. Take the leather electric sofa of Gujia Home Furnishing as an example. It includes left and right armrests, a backrest, a footrest, and a driving movable mechanism. Driven by the driving movable mechanism, the backrest and the footrest can perform corresponding movements to change the user's sitting posture.

[0003] A Chinese patent with authorization announcement number CN106617881B discloses an electric sofa frame structure, which includes a fixed structure, a moving structure, a footrest structure and a backrest. The fixed structure includes a fixed frame and a roller and a first roller arranged on the side of the fixed frame. The moving structure includes a moving frame, a seat frame fixed on the moving frame, a moving guide rail arranged on the side of the moving frame and a second roller arranged on the seat frame. The footrest structure includes a footrest and a footrest guide rail rotatably connected to the footrest. The cooperation of the roller and the guide rail makes the frame movement process smoother, the structural stability is stronger, and the comfort during use is improved.

[0004] Although the existing electric sofa can automatically drive the backrest and the footboard to flip up and down, the driving efficiency is not enough due to the provision of components such as an intermediate conversion mechanism. Summary of the invention

[0005] The purpose of the present invention is to provide an electric sofa and a control method, which, compared with the traditional sofa iron frame, omits the intermediate conversion mechanism, and has a more direct driving method and higher efficiency.

[0006] The object of the present invention is achieved as follows: an electric sofa comprises a left armrest, a right armrest, at least one backrest, at least one footrest, and a seat frame and a bottom frame fixedly connected between the left armrest and the right armrest, wherein the seat frame is located directly above the bottom frame;

[0007] The electric sofa further comprises at least one movable component, the movable component is connected to the backrest, and is movably connected to the seat frame and the footboard, and the movable component is movably connected to the bottom frame;

[0008] The movable component has a driving unit, and under the driving of the driving unit, the movable component moves forward and backward relative to the bottom frame, so that the movable component is linked with the backrest and the footboard.

[0009] Furthermore, the movable component includes a bottom movable frame that cooperates with the bottom frame to move forward and backward, as well as a front connecting rod mechanism and a rear connecting rod mechanism. The front side of the bottom movable frame is rotatably connected to and supports the foot plate through the front connecting rod mechanism, the foot plate is rotatably connected to the seat frame, and the rear side of the bottom movable frame is movably connected to the rear side of the seat frame through the rear connecting rod mechanism.

[0010] Furthermore, the driving unit of the movable component includes a motor, a screw and a screw nut. The motor is installed on the rear side of the bottom frame. The screw extends horizontally along the moving direction of the bottom movable frame and movably passes through the bottom movable frame. One end of the screw is connected to the output end of the motor, and the other end is rotatably connected to the bottom frame. The screw nut is fixedly connected to the bottom movable frame and is sleeved on the screw.

[0011] Furthermore, the left and right sides of the bottom movable frame are rotatably connected to a plurality of guide rollers, the left and right inner sides of the bottom frame are provided with horizontally extending side guide grooves, and the left and right guide rollers of the bottom movable frame are respectively rollingly engaged with the left and right side guide grooves.

[0012] Furthermore, the front connecting rod mechanism of the movable component is configured as a foot push rod, the foot is fixedly connected to a rear hinge plate, the rear hinge plate is rotatably connected to the front side of the seat frame, the foot push rod is arranged to be inclined forward based on the bottom movable frame, and the upper and lower ends of the foot push rod are respectively rotatably connected to the rear side of the rear hinge plate and the front side of the bottom movable frame.

[0013] Furthermore, the rear link mechanism of the movable assembly includes:

[0014] A bottom connecting rod, one end of which is rotatably connected to the rear side of the bottom movable frame;

[0015] One end of the rear connecting rod is rotatably connected to the other end of the bottom connecting rod, and the other end of the rear connecting rod is rotatably connected to the rear side of the seat frame. The rear connecting rod is set as a fixed base of the backrest.

[0016] Furthermore, the rear connecting rod is fixedly connected with a backrest connecting plate, the bottom of the backrest is detachably fixedly connected with the backrest connecting plate, and the backrest connecting plate is tilted backwards based on the fixed connection between the backrest connecting plate and the rear connecting rod.

[0017] Furthermore, the screw nut is provided with a screw nut limiter, the screw nut limiter is detachably connected to the bottom movable frame, and the screw nut is limitedly installed in the bottom movable frame, and the screw moves through the screw nut limiter.

[0018] Furthermore, in the packaged state, the electric sofa is decomposed into a flat-structured bottom frame, a seat frame, a right armrest, a left armrest, a backrest, and a footboard; the drive unit is installed in the bottom frame; the movable component is decomposed into two parts and is detachably connected to the bottom frame and the seat frame respectively; the bottom frame, the seat frame, the right armrest, the left armrest, and the backrest are combined one by one into a main assembly; the footboard is attached to the main assembly from the side to form a packaging structure that matches the internal space of the packaging box.

[0019] As another aspect of the present invention, a control method for an electric sofa is provided, wherein the electric sofa has two switchable states:

[0020] State 1: driven by the driving unit, the bottom movable frame moves forward relative to the bottom frame, and pushes the foot plate forward through the front connecting rod mechanism, so that the foot plate rotates upward. At the same time, the bottom movable frame pulls the rear connecting rod mechanism forward, driving the backrest to rotate backward;

[0021] State 2: driven by the driving unit, the bottom movable frame moves backward relative to the bottom frame, and pulls the foot plate backward through the front connecting rod mechanism, so that the foot plate rotates downward. At the same time, the bottom movable frame pushes the rear connecting rod mechanism backward to drive the backrest to rotate forward.

[0022] The beneficial effects of the present invention are:

[0023] 1. The movable component can directly drive the backrest and footboard under the drive unit. Compared with the traditional sofa iron frame, it eliminates the intermediate conversion mechanism, and the driving method is more direct and efficient;

[0024] 2. The electric sofa can be modularly disassembled and reassembled into a packaging structure that matches the internal space of the packaging box, making the packaging volume smaller and the cost lower;

[0025] 3. The movable components are driven by screw drive to move forward and backward, so that the backrest and footrest are linked. Compared with the traditional motor drive, the structure is simpler and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a perspective view of the present invention.

[0027] Figure 2 It is an exploded schematic diagram of the present invention.

[0028] Figure 3 It is a schematic diagram of the flattened state of the present invention.

[0029] Figure 4 It is a schematic diagram of the raised state of the present invention.

[0030] Figure 5 It is a structural schematic diagram of the active component and its drive unit.

[0031] Figure 6 It is a schematic diagram of the matching state of the screw rod and the screw nut.

[0032] Figure 7 It is a schematic diagram of the packaging state of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the attached embodiment of the present invention Figure 1-7, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-4 As shown, an electric sofa comprises a left armrest 7, a right armrest 8, a backrest 1, a footboard 5, and a seat frame 2 and a bottom frame 4 that are detachably fixedly connected to the left armrest 7 and the right armrest 8, the seat frame 2 and the bottom frame 4 are located between the left armrest 7 and the right armrest 8, and the seat frame 2 is located directly above the bottom frame 4; the detachable fixed connection method of the seat frame 2 and the bottom frame 4 and the armrest part is not limited here. The backrest 1 and the footboard 5 can be one or more, and this embodiment lists the case where the number of the backrest 1 and the footboard 5 is one.

[0035] The electric sofa further comprises a movable component 3 , which is connected to the backrest 1 , and is movably connected to the seat frame 2 and the footboard 5 , and the movable component 3 is movably connected to the bottom frame 4 .

[0036] The movable component 3 has a driving unit, and the movable component 3 moves forward and backward relative to the bottom frame 4 under the driving of the driving unit, so that the movable component 3 is linked with the backrest 1 and the footboard 5, and the backrest 1 and the footboard 5 can rotate simultaneously.

[0037] It is worth mentioning that the movable component 3 and its driving unit can be one set or multiple sets. This embodiment lists the case where the number of the movable component 3 and its driving unit is one.

[0038] More specifically, the movable component 3 includes a bottom movable frame 301 that cooperates with the bottom frame 4 to move forward and backward, as well as a front connecting rod mechanism and a rear connecting rod mechanism. The front side of the bottom movable frame 301 is rotatably connected to and supports the foot plate 5 through the front connecting rod mechanism, and the foot plate 5 is rotatably connected to the seat frame 2. The rear side of the bottom movable frame 301 is movably connected to the rear side of the seat frame 2 through the rear connecting rod mechanism.

[0039] As an optimized drive solution, such as Figure 5 , 6 As shown, this embodiment adopts a screw transmission method to drive the bottom movable frame 301 to translate forward and backward. The driving unit of the movable component 3 includes a motor 307, a screw 308 and a screw nut 309. The motor 307 is installed on the rear side of the bottom frame 4. The screw 308 extends horizontally along the moving direction of the bottom movable frame 301 and movably passes through the bottom movable frame 301. One end of the screw 308 is connected to the output end of the motor 307, and the other end thereof is rotatably connected to the bottom frame 4. The screw nut 309 is fixedly connected to the bottom movable frame 301 and is sleeved on the screw 308.

[0040] As an optimized installation scheme for the screw nut 309, the screw nut 309 is provided with a screw nut stopper 310 of a plate-like structure, the screw nut stopper 310 is detachably connected to the bottom movable frame 301, and the screw nut 309 is limitedly installed in the bottom movable frame 301, and the screw 308 movably passes through the screw nut stopper 310, such as Figure 6 As shown, it can be seen that the screw nut limiter 310 presses the screw nut 309 onto the cross bar of the bottom movable frame 301, and the screw nut limiter 310 is fixed to the cross bar of the bottom movable frame 301 by bolts. The screw nut limiter 310 holds the screw nut 309 tightly and limits it, thereby fixing the position of the screw nut 309.

[0041] The left and right sides of the bottom movable frame 301 are rotatably connected with a plurality of guide rollers 302. The left and right inner sides of the bottom frame 4 are provided with horizontally extending side guide grooves 4a. The left and right guide rollers 302 of the bottom movable frame 301 roll with the left and right side guide grooves 4a respectively.

[0042] The front connecting rod mechanism of the above-mentioned movable component 3 is set as a foot push rod 303, the foot 5 is fixedly connected to the rear hinge plate 6, the rear hinge plate 6 is rotatably connected to the front side of the seat frame 2, the foot push rod 303 is set to be tilted forward based on the bottom movable frame 301, and the upper and lower ends of the foot push rod 303 are respectively rotatably connected to the rear side of the rear hinge plate 6 and the front side of the bottom movable frame 301.

[0043] The rear connecting rod mechanism of the above movable assembly 3 comprises:

[0044] A bottom connecting rod 304, one end of which is rotatably connected to the rear side of the bottom movable frame 301;

[0045] One end of the rear connecting rod 305 is rotatably connected to the other end of the bottom connecting rod 304 , and the other end of the rear connecting rod 305 is rotatably connected to the rear side of the seat frame 2 . The rear connecting rod 305 is set as a fixed base of the backrest 1 .

[0046] Among them, the rear connecting rod 305 is fixedly connected to the backrest connecting plate 306, and the bottom of the backrest 1 is detachably fixedly connected to the backrest connecting plate 306. The specific detachable fixed connection method is not limited. The backrest connecting plate 306 is tilted backward based on the fixed connection between it and the rear connecting rod 305. The specific tilt angle is not limited, such as 30°.

[0047] As an optimized packaging solution, such as Figure 7As shown, in the packaging state, the electric sofa is decomposed into a bottom frame 4, a seat frame 2, a right armrest 8, a left armrest 7, a backrest 1, and a footboard 5 of a rectangular flat structure. The bottom frame 4, the seat frame 2, the right armrest 8, the left armrest 7, the backrest 1, and the footboard 5 are all detachable modular structures and can be removed during packaging to make the packaging volume smaller. The drive unit is installed in the bottom frame 4, and the movable component 3 can be decomposed into two parts and detachably connected to the bottom frame 4 and the seat frame 2 respectively; the bottom frame 4, the seat frame 2, the right armrest 8, the left armrest 7, and the backrest 1 are combined one by one into a main assembly of a roughly rectangular structure, and the footboard 5 is attached to the main assembly from the side to form a rectangular packaging structure that matches the internal space of the packaging box (also a rectangular structure), and the UPS packaging and transportation requirements (the specific size is not limited here) can be met through process design.

[0048] The above electric sofa has two switchable states:

[0049] Status 1: If Figure 3 As shown, driven by the driving unit, the bottom movable frame 301 moves forward relative to the bottom frame 4, and pushes the foot plate 5 forward through the front connecting rod mechanism, so that the foot plate 5 rotates upward until the foot plate 5 is flat. At the same time, the bottom movable frame 301 pulls the rear connecting rod mechanism forward to drive the backrest 1 to rotate backward;

[0050] State 2: If Figure 4 As shown, driven by the driving unit, the bottom movable frame 301 moves backward relative to the bottom frame 4, and pulls the footboard 5 backward through the front connecting rod mechanism, so that the footboard 5 rotates downward until the footboard 5 is in a vertical state. At the same time, the bottom movable frame 301 pushes the rear connecting rod mechanism backward, driving the backrest 1 to rotate forward.

[0051] The driving process of the driving unit is as follows: the motor 307 drives the screw rod 308 to rotate, and the screw rod 308 and the screw nut 309 cooperate to convert the rotational motion of the screw rod 308 into linear motion, driving the bottom movable frame 301 to perform a smooth forward and backward translation motion.

[0052] like Figure 4 As shown, the connecting rod state of the electric sofa in state 2 is as follows:

[0053] The foot push rod 303 is tilted forward, and the foot 5 is in a vertical state; the bottom connecting rod 304 is tilted backward, and the hinge point between the bottom connecting rod 304 and the lower end of the rear connecting rod 305 is located rearward relative to the hinge point between the rear connecting rod 305 and the seat frame 2. At this time, the bottom movable frame 301 is in a rearward position in the bottom frame 4.

[0054] like Figure 3 As shown, the connecting rod state of the electric sofa in state 1 is as follows:

[0055] The foot push rod 303 is tilted forward and supports the foot 5 in a flat state; the bottom connecting rod 304, the rear connecting rod 305 and the backrest 1 are all tilted backward. When the bottom movable frame 301 moves forward, the rear connecting rod 305 rotates forward based on the rotation connection fulcrum at its upper end, and at the same time drives the backrest 1 to tilt backward. The bottom movable frame 301 is now in a front position in the bottom frame 4.

[0056] like Figure 5 As shown, during the operation of the electric sofa, the guide rollers 302 on the left and right sides of the bottom movable frame 301 roll in the side guide grooves 4a on the left and right sides of the bottom frame 4 respectively, and the side guide grooves 4a are used to limit the forward and backward movement trajectory of the bottom movable frame 301, and rolling cooperation is used to reduce friction.

[0057] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; in the present invention, it should also be noted that the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integrally formed connection, a mechanical connection, or an indirect connection through an intermediate connecting component, and the specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0058] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electric sofa, comprising a left armrest (7), a right armrest (8), at least one backrest (1), at least one footrest (5), and a seat frame (2) and a bottom frame (4) fixedly connected between the left armrest (7) and the right armrest (8), wherein the seat frame (2) is located directly above the bottom frame (4), characterized in that: The electric sofa further comprises at least one movable component (3), wherein the movable component (3) is connected to the backrest (1) and is movably connected to the seat frame (2) and the footboard (5), and the movable component (3) is movably connected to the bottom frame (4); The movable component (3) has a driving unit, and under the drive of the driving unit, the movable component (3) moves forward and backward relative to the bottom frame (4), so that the movable component (3) is linked with the backrest (1) and the footboard (5).

2. The electric sofa according to claim 1, characterized in that: The movable assembly (3) comprises a bottom movable frame (301) that cooperates with the bottom frame (4) to move forward and backward, as well as a front connecting rod mechanism and a rear connecting rod mechanism. The front side of the bottom movable frame (301) is rotatably connected to and supports a foot plate (5) through the front connecting rod mechanism. The foot plate (5) is rotatably connected to the seat frame (2). The rear side of the bottom movable frame (301) is movably connected to the rear side of the seat frame (2) through the rear connecting rod mechanism.

3. The electric sofa according to claim 2, characterized in that: The driving unit of the movable assembly (3) is connected to the bottom frame (4) and is transmission-connected / matched with the bottom movable frame (301).

4. The electric sofa according to claim 2, characterized in that: The left and right sides of the bottom movable frame (301) are respectively movably matched with the left and right inner sides of the bottom frame (4) in the front and back directions.

5. The electric sofa according to claim 2, characterized in that: The front connecting rod mechanism of the movable assembly (3) is configured as a foot plate push rod (303), and the two ends of the foot plate push rod (303) are respectively rotatably connected to the rear side of the foot plate (5) and the front side of the bottom movable frame (301).

6. The electric sofa according to claim 2, characterized in that: The rear connecting rod mechanism of the movable assembly (3) comprises: A bottom connecting rod (304), one end of which is rotatably connected to the rear side of the bottom movable frame (301); A rear connecting rod (305) has one end rotatably connected to the other end of the bottom connecting rod (304), and the other end rotatably connected to the rear side of the seat frame (2). The rear connecting rod (305) is set as a fixed base of the backrest (1).

7. The electric sofa according to claim 6, characterized in that: The rear connecting rod (305) is fixedly connected to a backrest connecting plate (306), the bottom of the backrest (1) is detachably fixedly connected to the backrest connecting plate (306), and the backrest connecting plate (306) is tilted backwards based on the fixed connection point between the backrest connecting plate (306) and the rear connecting rod (305).

8. The electric sofa according to claim 3, characterized in that: The driving unit of the movable assembly (3) comprises a motor (307), a screw rod (308) and a screw rod nut (309); the motor (307) is mounted on the rear side of the bottom frame (4); the screw rod (308) extends horizontally along the moving direction of the bottom movable frame (301) and movably passes through the bottom movable frame (301); one end of the screw rod (308) is connected to the output end of the motor (307), and the other end is rotatably connected to the bottom frame (4); the screw rod nut (309) is fixedly connected to the bottom movable frame (301) and sleeved on the screw rod (308); The screw nut (309) is provided with a screw nut stopper (310), the screw nut stopper (310) is detachably connected to the bottom movable frame (301), and the screw nut (309) is installed in the bottom movable frame (301) with a limit position, and the screw (308) movably passes through the screw nut stopper (310).

9. An electric sofa according to any one of claims 1 to 8, characterized in that: In a packaged state, the electric sofa is decomposed into a flat structure bottom frame (4), a seat frame (2), a right armrest (8), a left armrest (7), a backrest (1), and a footboard (5); the driving unit is installed in the bottom frame (4); the movable component (3) is decomposed into two parts and is detachably connected to the bottom frame (4) and the seat frame (2); the bottom frame (4), the seat frame (2), the right armrest (8), the left armrest (7), and the backrest (1) are assembled one by one into a main assembly; the footboard (5) is attached to the main assembly from the side to form a packaging structure matching the internal space of the packaging box.

10. A control method for the electric sofa according to claim 2, characterized in that: The electric sofa has two switchable states: State 1: driven by the driving unit, the bottom movable frame (301) moves forward relative to the bottom frame (4), and pushes the foot plate (5) forward through the front connecting rod mechanism, so that the foot plate (5) rotates upward. At the same time, the bottom movable frame (301) pulls the rear connecting rod mechanism forward, driving the backrest (1) to rotate backward. State 2: Under the drive of the driving unit, the bottom movable frame (301) moves backward relative to the bottom frame (4), and pulls the foot plate (5) backward through the front connecting rod mechanism, so that the foot plate (5) rotates downward. At the same time, the bottom movable frame (301) pushes the rear connecting rod mechanism backward, driving the backrest (1) to rotate forward.

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