Rocking sofa bed

Abstract

The utility model discloses a kind of rocking sofa bed, it is related to the technical field of smart home, wherein, the rocking sofa bed includes base, fixed frame, drive assembly, foot lifting assembly, backrest assembly and controller;The fixed frame is located on the base;The drive assembly is located on the fixed frame;The foot lifting assembly is slidably connected on the fixed frame, and is transmission connection with the drive assembly;One end of the backrest assembly is connected with the foot lifting assembly, and the other end of the backrest assembly is hinged on the fixed frame;With the drive assembly electric connection, for controlling the reciprocating motion of the drive assembly;Wherein, the controller controls the drive assembly drives the foot lifting assembly reciprocating movement along the length direction of the fixed frame, to make the foot lifting assembly and the backrest assembly switch between open state and retract state.The technical scheme provided by the utility model realizes automatic rocking, to provide sleep aid experience for user.

Description

Technical Field

[0001] This utility model relates to the field of smart home technology, and in particular to a rocking sofa bed. Background Technology

[0002] Currently, in the field of multifunctional furniture technology, sofa beds, as a common structural form, have been widely developed and applied. These products primarily achieve the transformation between sofa and bed functions through frame structures, hinge mechanisms, or folding mechanisms, meeting users' sitting and lying needs in different scenarios. However, traditional sofa beds cannot move independently and cannot provide a sleep-aiding experience. Utility Model Content

[0003] The main purpose of this invention is to propose a rocking sofa bed that automatically rocks to provide users with a sleep-aiding experience.

[0004] To achieve the above objectives, this utility model proposes a rocking sofa bed, which includes:

[0005] Base;

[0006] A fixed frame is provided on the base;

[0007] A driving component, wherein the driving component is disposed on the fixed frame;

[0008] A foot-lifting assembly is slidably connected to the fixed frame and is drive-connected to the driving assembly.

[0009] A backrest assembly, one end of which is connected to the footrest assembly, and the other end of which is hinged to the fixed frame; and

[0010] A controller, electrically connected to the drive assembly, is used to control the reciprocating motion of the drive assembly;

[0011] The controller controls the drive component to move the foot-lifting component back and forth along the length of the fixed frame, so that the foot-lifting component and the backrest component switch between an open state and a retracted state, forming an automatic rocking motion.

[0012] In one embodiment, the foot-lifting assembly includes:

[0013] At least two connecting blocks, the two connecting blocks being slidably connected to opposite sides of the fixed frame;

[0014] At least two footrests, each footrest connected to one of the connecting blocks; the backrest assembly connected to the two footrests; and

[0015] A seat cushion, which is connected to the two footrests.

[0016] In one embodiment, the connecting block includes a connecting strip and a protrusion connected to the connecting strip. One end of the connecting strip away from the protrusion is slidably connected to the fixed frame and is drive-connected to the driving assembly. The protrusion is slidably connected to the fixed frame.

[0017] In one embodiment, the driving component includes:

[0018] A drive motor is mounted on the fixed frame, and the output shaft of the drive motor is connected to a worm gear.

[0019] A slider, which is connected to the fixed frame and to the lifting foot assembly;

[0020] A screw, one end of which is connected to the slider;

[0021] A turbine, which is connected to the other end of the screw and meshes with the worm gear;

[0022] The drive motor drives the worm gear to rotate, so that the turbine drives the screw to rotate synchronously, and drives the slider to reciprocate along the axial direction of the screw.

[0023] In one embodiment, the rocking sofa bed further includes:

[0024] An airbag pump body is provided, wherein the airbag body is mounted on the fixed frame and electrically connected to the controller, and the airbag pump body is spaced apart from the drive assembly and the foot-raising assembly.

[0025] A chest-expanding airbag, mounted on both sides of the backrest assembly and connected to the airbag pump body, is used for massaging the user's thoracic spine or upper back area; and

[0026] The lumbar airbag is installed in the lower half of the backrest assembly and is connected to the airbag pump body for massaging the user's lower back area.

[0027] The controller controls the airbag pump to inflate and deflate the lumbar airbag and the chest expansion airbag to perform a massage action.

[0028] In one embodiment, the rocking sofa bed further includes a hand controller, which is electrically connected to the controller. The hand controller is equipped with a rocking switch, a motor control button, and an airbag switch button, for the user to control various functions of the rocking sofa bed.

[0029] In one embodiment, the fixed frame includes:

[0030] The main frame is mounted on the base;

[0031] Two side frames, each mounted on one side of the main frame; and

[0032] Two connecting beams, each of which is connected at both ends to one of the side frames, and the two connecting beams are spaced apart.

[0033] In one embodiment, the side frame includes a side mounting rod and a wedge-shaped mounting block connected to the side mounting rod, one end of the foot-lifting assembly is slidably connected to the wedge-shaped mounting block, and the other end of the foot-lifting assembly is slidably connected to the side mounting rod.

[0034] In one embodiment, the backrest assembly includes:

[0035] At least two support components, two of which are mounted on either side of the fixed frame; and

[0036] The backrest is connected to the two support components.

[0037] In one embodiment, the support component includes:

[0038] A first movable component, one end of which is hinged to the fixed frame;

[0039] The second movable member is hinged to the other end of the first movable member;

[0040] A backrest support frame, which is mounted on the footrest assembly;

[0041] The third movable component, one end of which is hinged to the backrest support frame;

[0042] A horizontal bar, the two ends of which are respectively hinged to the other end of the second movable member and the other end of the third movable member;

[0043] A fourth movable member, one end of which is hinged to the second movable member; and

[0044] A backrest fixing frame is hinged to the other end of the fourth movable member and to the third movable member.

[0045] This utility model's technical solution for a rocking sofa bed includes a base, a fixed frame, a drive assembly, a leg-lifting assembly, a backrest assembly, and a controller. The controller controls the drive assembly to move the leg-lifting assembly back and forth along the length of the fixed frame, switching the leg-lifting assembly and backrest assembly between open and retracted states to create an automatic rocking motion. Upon receiving commands from the controller, the drive assembly moves the leg-lifting assembly and backrest assembly along the track of the fixed frame. Since one end of the backrest assembly is hinged to the fixed frame, and the other end moves with the leg-lifting assembly, its angle changes during movement, creating a periodic swing similar to a rocking chair. The controller adjusts the motor speed and direction to control the swing amplitude and frequency, allowing the device to automatically switch between sofa and rocking bed modes. By integrating a drive system and intelligent control, a fully automatic rocking function is achieved, providing users with a sleep-aiding experience. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0047] Figure 1 A schematic diagram of the retracted state of the rocking sofa bed provided by this utility model;

[0048] Figure 2 A schematic diagram of the rocking sofa bed provided by this utility model in the open state;

[0049] Figure 3 A top view of the rocking sofa bed provided by this utility model;

[0050] Figure 4 A schematic diagram of the side frame of the rocking sofa bed provided by this utility model;

[0051] Figure 5 A schematic diagram showing the connection between the controller of the rocking sofa bed provided by this utility model and other components.

[0052] Explanation of icon numbers:

[0053] 10. Base; 20. Fixed frame; 21. Main frame; 22. Side frame; 221. Side mounting rod; 222. Wedge mounting block; 23. Connecting crossbeam; 30. Drive assembly; 31. Drive motor; 32. Slider; 33. Screw; 40. Foot lifting assembly; 41. Connecting block; 411. Connecting strip; 412. Protrusion; 42. Foot lifting body; 50. Support assembly; 51. First movable part; 52. Second movable part; 53. Backrest support frame; 54. Third movable part; 55. Crossbar; 56. Fourth movable part; 57. Backrest fixing frame; 60. Controller; 70. Airbag pump body; 80. Chest expansion airbag; 90. Lumbar support airbag; 100. Hand controller.

[0054] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0055] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0056] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0057] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0058] In existing technologies, multifunctional sofa beds achieve sitting and lying functions through a frame structure and folding mechanism, but lack independent movement capabilities. Users cannot obtain sleep aids during use and need to purchase additional rocking chairs or massage devices, resulting in reduced space utilization. For example, in home rest scenarios, users hope that sofa beds can provide both sitting and lying functions, as well as mimicking the rocking rhythm of a cradle to help them fall asleep; traditional structures cannot meet such combined needs.

[0059] To address these issues, researchers discovered that the rigid frames of existing sofa beds struggle to integrate motion functions, and manual adjustment methods are inconvenient. Analysis of ergonomic data revealed that regular rocking motion helps relax the nerves. Based on this, they proposed embedding a programmable drive system within the sofa bed, achieving automatic rocking through a precision transmission mechanism. To resolve the conflict between structural stability and smooth movement, a split-type sliding connection scheme was adopted, ensuring balanced force distribution among the components during movement.

[0060] Therefore, please refer to Figure 1 , Figure 2 and Figure 5 This application proposes a rocking sofa bed including a base 10, a fixed frame 20, a drive assembly 30, a footrest assembly 40, a backrest assembly, and a controller 60. The controller 60 controls the drive assembly 30 to move the footrest assembly 40 back and forth along the length of the fixed frame 20, so that the footrest assembly 40 and the backrest assembly switch between open and retracted states, forming an automatic rocking motion.

[0061] In this embodiment, the base 10 refers to the base supporting the overall structure, which can be implemented by combining a steel frame with anti-slip pads to distribute the load and maintain the stability of the equipment. The fixed frame 20 refers to the support frame installed on the base 10, which can be formed by splicing multiple sections of aluminum alloy profiles to provide a guide rail for the sliding component. The drive component 30 refers to the power output unit. The foot lifting component 40 refers to the moving part connected to the drive system, which drives the backrest component to move synchronously during sliding. The backrest component refers to the structure that supports the back of the human body and maintains adaptive angle adjustment during movement. The controller 60 refers to the motion control unit, which outputs pulse signals through a preset program to control the operating frequency of the drive component 30.

[0062] Specifically, the base 10 contacts the ground and provides support, while the fixed frame 20 is vertically mounted on the base 10 to form a rigid skeleton. After receiving instructions from the controller 60, the drive assembly 30 drives the footrest assembly 40 and the backrest assembly to move along the track of the fixed frame 20. Since one end of the backrest assembly is hinged to the fixed frame 20, and the other end moves with the footrest assembly 40, it experiences angle changes during movement, creating a periodic swaying motion similar to a rocking chair. The controller 60 controls the amplitude and frequency of the swaying motion by adjusting the motor speed and direction, allowing the device to automatically switch between sofa and rocking bed modes.

[0063] Compared to existing technologies, traditional sofa beds rely on manual adjustment to achieve form transformation. This solution integrates a drive system and intelligent control to achieve fully automatic rocking. Existing products require an external rocking chair, taking up space. This solution embeds the motion mechanism into the sofa bed body, expanding the sleep-aid mode while maintaining the original sitting and lying functions. Traditional folding mechanisms have the risk of jamming; this solution uses a combination of linear sliding and hinged motion to ensure smooth movement.

[0064] Through the above technical solution, this application realizes the autonomous rocking function of the sofa bed, allowing users to enjoy a sleep-aiding experience without additional equipment. The controller 60 precisely adjusts motion parameters to adapt to the rocking amplitude needs of different users. The sliding connection method reduces mechanical wear and extends the service life of the device. The linkage design between the backrest assembly and the footrest assembly 40 ensures that the human body maintains a natural posture during rocking.

[0065] Please see Figures 1 to 3 The present application further proposes that the footrest assembly 40 includes at least two connecting blocks 41 slidably connected to opposite sides of the fixed frame 20; at least two footrest bodies 42, each footrest body 42 connected to a connecting block 41, a backrest assembly connected to the two footrest bodies 42; and a seat cushion connected to the two footrest bodies 42.

[0066] In this embodiment, the connecting block 41 refers to a support component with a sliding function, which supports the leg-lifting body 42 and transmits power to the drive assembly 30. The leg-lifting body 42 refers to a structural unit that forms leg support, which can be implemented using a rigid frame with an arc-shaped profile, and its function is to move with the connecting block 41 to change the support angle. The seat cushion refers to a flexible component that bears the weight of the human body, which can be implemented using a composite layer of high-density sponge and fabric, and its function is to provide a comfortable contact surface and distribute pressure.

[0067] Specifically, when the drive component 30 pushes the connecting block 41 to slide along the fixed frame 20, the two lifting feet 42 move synchronously on both sides, causing the seat cushion to shift. The symmetrical sliding of the connecting block 41 on both sides of the fixed frame 20 avoids the offset problem caused by unilateral force, and the rigid connection between the lifting feet 42 and the connecting block 41 ensures stable movement trajectory. The connection design between the seat cushion and the two lifting feet 42 ensures that it maintains planar support during state switching, avoiding local collapse. This structure achieves coordinated movement of the lifting foot component 40 and the backrest component through a multi-point linkage mechanism, forming a stable opening and closing motion.

[0068] Compared to existing technologies, traditional sofa beds often use single-sided drive or a folding frame for their lifting mechanisms, which can easily lead to structural imbalance or asynchronous movements. This solution, through symmetrically arranged connecting blocks 41 and lifting legs 42 on both sides, achieves even force distribution and significantly improves movement synchronization. The direct connection design between the seat cushion and the lifting legs 42 simplifies the support structure hierarchy and reduces the risk of mechanical failure.

[0069] Through the above technical solution, this application solves the problem of insufficient stability of traditional sofa bed leg lifting mechanism. The symmetrical leg lifting components 40 on both sides effectively disperse the load pressure, the rigid connection between the seat cushion and the leg lifting body 42 ensures the flatness of the support surface, and the multi-component linkage mechanism makes the state switching action more stable and reliable.

[0070] Please see Figures 1 to 3 This application further proposes that the connecting block 41 includes a connecting strip 411 and a protrusion 412 connected to the connecting strip 411. The end of the connecting strip 411 away from the protrusion 412 is slidably connected to the fixed frame 20 and is connected to the drive assembly 30 in a transmission manner; the protrusion 412 is slidably connected to the fixed frame 20.

[0071] In this embodiment, the connecting strip 411 refers to the elongated plate-like structure within the connecting block 41, which can be formed by stamping metal sheets. It supports the lifting foot 42 and transmits power to the driving assembly 30. The protrusion 412 refers to the block-like structure extending outward from one side of the connecting strip 411. It can be fixedly connected to the connecting strip 411 by welding or integral molding, increasing the contact area between the connecting block 41 and the fixed frame 20 and improving sliding stability. The sliding connection to the fixed frame 20 means that the connecting block 41 forms a movable engagement relationship with the fixed frame 20 through a slide rail or roller mechanism. This can be achieved using a linear guide rail or guide groove structure, ensuring that the lifting foot assembly 40 moves smoothly along the length of the fixed frame 20.

[0072] Specifically, one end of the connecting strip 411 is embedded in the guide groove of the fixed frame 20 via a slide rail and connected to the transmission component of the drive assembly 30, so that the power output by the drive assembly 30 directly acts on the connecting strip 411. The protrusion 412 is also embedded in the guide groove on the other side of the fixed frame 20, forming a double sliding support structure. When the drive assembly 30 is running, the connecting strip 411 drives the lifting foot 42 to move along the fixed frame 20, while the protrusion 412 slides synchronously in the guide groove, sharing the force on the connecting block 41 and avoiding offset or jamming caused by unilateral sliding.

[0073] Compared to existing technologies, the traditional sofa bed's leg support assembly 40 is typically connected to the frame via only a single sliding component, which can easily lead to uneven force distribution or deviation of the sliding trajectory during frequent reciprocating movements. This solution utilizes a dual sliding support structure consisting of the connecting strip 411 and the protrusion 412 to ensure that the leg support assembly 40 maintains stable linear contact with the fixed frame 20 throughout its movement, reducing motion resistance and minimizing component wear.

[0074] Please see Figures 1 to 3 This application further proposes that the drive assembly 30 includes a drive motor 31, a slider 32, a screw 33, and a worm gear. The drive motor 31 is mounted on the fixed frame 20, and the output shaft of the drive motor 31 is connected to a worm gear; the slider 32 is connected to the fixed frame 20 and connected to the lifting foot assembly 40; one end of the screw 33 is connected to the slider 32; the worm gear is connected to the other end of the screw 33 and meshes with the worm gear; the drive motor 31 drives the worm gear to rotate, so that the worm gear drives the screw 33 to rotate synchronously, and drives the slider 32 to reciprocate along the axial direction of the screw 33.

[0075] In this embodiment, the drive motor 31 refers to a device that provides power output, specifically a DC motor with a reduction function, used to convert electrical energy into mechanical rotational motion. The worm refers to a transmission component with helical teeth, specifically a single-start or double-start worm structure, meshing with the worm gear to transmit torque. The worm gear refers to a gear structure that meshes with the worm, specifically made of copper alloy or engineering plastic, which converts the worm's rotational motion into its own rotation through meshing. The screw 33 refers to a rod-shaped component with external threads, specifically a trapezoidal thread or ball screw structure, used to convert the worm gear's rotational motion into the linear displacement of the slider 32. The slider 32 refers to a moving component that threadedly meshes with the screw 33, specifically a metal block with internal threads or a polymer material sliding seat, which drives the lifting foot assembly 40 to move by moving along the axial direction of the screw 33.

[0076] Specifically, when the drive motor 31 starts, the worm rotates with the output shaft, driving the worm to rotate synchronously through meshing with the turbine. The turbine is fixedly connected to the screw 33, causing the screw 33 to rotate with the turbine. Since the slider 32 and the screw 33 are threaded together, the rotation of the screw 33 is converted into the linear reciprocating motion of the slider 32. The direction of movement of the slider 32 is determined by the rotation direction of the screw 33, thus controlling the forward and reverse rotation of the drive motor 31 to achieve the forward or backward movement of the slider 32. The linear motion of the slider 32 is further transmitted to the footrest assembly 40, driving it to slide along the fixed frame 20, ultimately achieving the switching between the backrest assembly and the footrest assembly 40 in the open and retracted states.

[0077] Compared to existing technologies, traditional sofa bed drive mechanisms typically employ hydraulic cylinders or chain drives, resulting in complex structures, high noise levels, and difficult maintenance. This solution utilizes the meshing transmission of a worm gear and a turbine, combined with the threaded engagement of the screw 33 and the slider 32, achieving high transmission efficiency and self-locking characteristics to prevent positional misalignment caused by external forces. Simultaneously, the reduction characteristics of the worm gear reduce the motor load and extend its service life.

[0078] Please see Figures 3 to 5 This application further proposes that the rocking sofa bed also includes an airbag pump body 70, the airbag body is mounted on the fixed frame 20 and electrically connected to the controller 60, and the airbag pump body 70 is spaced apart from the drive assembly 30 and the foot-lifting assembly 40; the chest-expanding airbag 80 is mounted on both sides of the backrest assembly and communicates with the airbag pump body 70, and is used for massaging the thoracic spine or upper back area corresponding to the user; the lumbar airbag 90 is mounted on the lower half of the backrest assembly and communicates with the airbag pump body 70, and is used for massaging the lower back area corresponding to the user; wherein the controller 60 controls the airbag pump body 70 to inflate and deflate the lumbar airbag 90 and the chest-expanding airbag 80 to perform massage actions.

[0079] In this embodiment, the airbag pump body 70 refers to a power device that generates air pressure changes by compressing gas. Specifically, it can be implemented using an electric air pump or a pneumatic system controlled by a solenoid valve. Its spacing avoids mechanical interference with the drive component 30. The chest expansion airbag 80 refers to an inflatable element with a flexible cavity. Specifically, it can be an inflatable bladder made of silicone or polyurethane material, and its installation position corresponds to the thoracic spine area of ​​the human body to achieve local pressure adjustment. The lumbar support airbag 90 refers to an inflatable structure arranged in the lower half of the backrest. Specifically, it can be a split or integrated design, and it provides support to the lumbar spine area through inflation. The airbag pump body 70 is electrically connected to the controller 60 to achieve precise control of inflation volume and frequency, thereby adapting to the massage needs of different users.

[0080] Specifically, when the controller 60 activates the airbag pump 70, compressed gas is delivered through pipes to the chest-expanding airbag 80 and the lumbar airbag 90. The chest-expanding airbag 80 gradually expands during inflation, applying progressive pressure to the user's upper back; the lumbar airbag 90 inflates simultaneously, forming a raised support surface that provides support to the lower back area. During the deflation phase, the airbags shrink, releasing the pressure and creating a periodic, undulating massage motion. The inflation and deflation process can coordinate with the rocking motion driven by the drive assembly 30, allowing the user to enjoy a multi-area massage experience while experiencing automatic rocking.

[0081] Compared to existing technologies, traditional sofa beds only offer form-changing functionality but lack active massage capabilities. This solution integrates an airbag system into the backrest assembly, utilizing pneumatic principles to achieve precise massage of key body parts. Existing technologies typically employ motor-driven mechanical vibration components for massage devices, resulting in high noise levels and insufficient comfort. In contrast, airbag massage offers advantages such as no mechanical friction and uniform pressure distribution.

[0082] Through the above technical solution, this application can simultaneously provide gentle massage to the thoracic spine, upper back, and lower back areas during the automatic rocking of the sofa bed, effectively relieving muscle fatigue and improving user comfort. The inflation and deflation of the airbag system can adaptively adjust the contact area according to the user's body shape, avoiding the problem of excessive local pressure in traditional mechanical massage devices. At the same time, the pneumatic drive method significantly reduces operating noise compared to electric vibrators.

[0083] Please see Figures 3 to 5 This application further proposes that the rocking sofa bed also includes a hand controller 100, which is electrically connected to the controller 60. The hand controller 100 is equipped with a rocking switch, a motor control button, and an airbag switch button, which are used by the user to control various functions of the rocking sofa bed.

[0084] In this embodiment, the hand controller 100 refers to a remote control device that establishes a communication connection with the controller 60. Specifically, it can use a wireless radio frequency module or a Bluetooth module to transmit signals, and is used to receive user operation commands and forward them to the controller 60 to execute corresponding functions. The rocking switch is a control unit that triggers the reciprocating motion of the drive component 30. Specifically, it can be implemented using a self-resetting button or a toggle switch, and is used to activate the automatic rocking mode so that the footrest component 40 and the backrest component form periodic displacements. The motor control button is the operation unit for starting and stopping the drive motor 31. Specifically, it can be implemented using a dual-contact button to control forward and reverse rotation, and is used to adjust the movement direction and speed of the drive component 30. The airbag switch button is the command unit for controlling the inflation and deflation of the airbag pump 70. Specifically, it can be implemented using a three-position sliding switch to switch between inflation, holding, and deflation states, and is used to independently adjust the massage intensity of the chest expansion airbag 80 and the lumbar support airbag 90.

[0085] Specifically, the hand controller 100 connects to the controller 60 via cable or wireless signal. The user can trigger the drive motor 31 by pressing the rocking switch, causing the footrest assembly 40 to slide along the fixed frame 20, thus automatically switching the sofa bed between sitting and reclining positions. The motor control button is configured to start the drive motor 31 with a single press, stop it with another press, and switch the direction of movement with a long press. The airbag switch button is set to inflate the airbag pump 70 with a short press, deflate it with another press, and maintain the current air pressure with continuous pressing. All function buttons coordinate the working sequence of the drive assembly 30 and the airbag pump 70 through the controller 60, creating a continuous rocking and massage motion.

[0086] Compared to existing technologies, traditional sofa beds typically rely on mechanical handles or separate remote controls. Operation requires users to get up to adjust the mechanical structure or operate multiple devices simultaneously, making it impossible to achieve coordinated control of sitting / lying positions and massage functions. This solution integrates the rocking function, motor drive, and airbag control into a single operating interface using an integrated hand controller 100. The button layout is ergonomic, with the frequently used rocking switch positioned in the center, and the airbag switch and motor button on either side, effectively preventing accidental activation and improving operational efficiency.

[0087] Through the above technical solution, this application solves the problem of fragmented user experience caused by the decentralized control method of traditional sofa beds. Users can adjust the swing amplitude, drive speed and airbag pressure synchronously through the hand controller 100 without leaving the seat, realizing the coordinated work of sitting and lying posture transformation and local massage, which significantly improves the convenience of operation and the degree of functional integration.

[0088] Please see Figure 3 and Figure 4 This application further proposes a fixed frame 20 for a rocking sofa bed, which includes a main frame 21, two side frames 22, and two connecting beams 23. The main frame 21 is mounted on the base 10; the two side frames 22 are respectively installed on both sides of the main frame 21; each end of the connecting beam 23 is connected to one side frame 22, and the two connecting beams 23 are spaced apart.

[0089] In this embodiment, the main frame 21 refers to the foundation frame that supports the overall structure. Specifically, it can be a rectangular frame formed by welding metal profiles, providing an installation base for the side frames 22 and connecting beams 23. The side frames 22 are the supporting components located on both sides of the main frame 21. Specifically, they can be steel frame structures with sliding rails, connected to the main frame 21 by bolts or welding, providing guide tracks for the sliding of the lifting assembly 40. The connecting beams 23 are rigid components that laterally connect the two side frames 22. Specifically, they can be square tubes or I-beams, fixed to both ends of the side frames 22 by bolts. The two beams enhance the structural stability between the two side frames 22 and limit their relative displacement.

[0090] Specifically, the main frame 21, as the core support structure of the fixed frame 20, achieves overall stability through contact with the ground via the base 10. Two side frames 22 are vertically installed on both sides of the main frame 21, forming a symmetrical layout. Internal slide rails allow the lifting foot assembly 40 to slide along the length of the fixed frame 20. Two connecting beams 23 are fixed to the front and rear ends of the side frames 22 respectively, forming a closed-loop frame structure through rigid connection. This ensures that the side frames 22 maintain synchronous displacement even when subjected to lateral forces generated by the reciprocating motion of the lifting foot assembly 40, preventing frame deformation or movement stagnation due to unilateral force.

[0091] Compared to existing technologies, traditional sofa beds typically use a single crossbeam to connect the two supporting structures, resulting in fewer connection points and a larger span. This makes them prone to torsional deformation when the drive assembly 30 is subjected to reciprocating loads. This solution, by setting two spaced-apart connecting crossbeams 23, creates a double constraint between the side frames 22, significantly improving the frame's bending stiffness and torsional resistance, ensuring that the footrest assembly 40 maintains a consistent movement trajectory on both sides during sliding.

[0092] Through the above technical solution, this application effectively solves the problem of asynchronous movement caused by insufficient rigidity of traditional sofa bed frames. The design of double connecting beams 23 reduces the deformation risk of the side frame 22 under dynamic load, thereby ensuring that the drive component 30 drives the foot lifting component 40 to achieve smooth and reliable reciprocating motion, and provides a stable structural foundation for the automatic rocking function.

[0093] Please see Figure 3 and Figure 4 This application further proposes that the side frame 22 includes a side mounting rod 221 and a wedge-shaped mounting block 222 connected to the side mounting rod 221, one end of the foot lifting assembly 40 is slidably connected to the wedge-shaped mounting block 222, and the other end of the foot lifting assembly 40 is slidably connected to the side mounting rod 221.

[0094] In this embodiment, the side mounting rod 221 refers to a support structure extending laterally along both sides of the fixed frame 20. Specifically, it can be formed by welding metal tubing or profiles, and is used to provide a sliding track foundation for the foot-lifting assembly 40. The wedge-shaped mounting block 222 refers to a block-shaped component with an inclined mounting surface, and can be injection molded from engineering plastics. Its inclined surface matches the sliding trajectory of the foot-lifting assembly 40, and is used to adjust the sliding contact angle. The sliding connection refers to the movement pair achieved through the cooperation of a slide rail and a slide groove. Specifically, it can adopt a combination structure of linear bearings and guide rods, so that the foot-lifting assembly 40 maintains a predetermined trajectory during movement.

[0095] Specifically, when the drive assembly 30 pushes the foot-lifting assembly 40 to move along the fixed frame 20, the sliding connection points at both ends of the foot-lifting assembly 40 move synchronously along the inclined surface of the wedge-shaped mounting block 222 and the linear track of the side mounting rod 221, respectively. The inclined surface of the wedge-shaped mounting block 222 causes the foot-lifting assembly 40 to generate a vertical component force during horizontal movement, thereby optimizing the smoothness of the movement trajectory. The linear track of the side mounting rod 221 constrains the movement axis of the foot-lifting assembly 40, preventing lateral deviation. This dual-track cooperation structure effectively disperses the frictional load during movement. For example, in the open state, the inclined surface contact of the wedge-shaped mounting block 222 reduces the normal pressure on the sliding surface, while in the retracted state, the linear track of the side mounting rod 221 undertakes the main guiding function.

[0096] Compared to existing technologies, traditional sofa beds often use a single flat slide rail for their side support structure, which is prone to jamming or uneven wear of the sliding components. This solution utilizes a combination design of wedge-shaped mounting blocks 222 and side mounting rods 221, creating complementary angles on the sliding contact surfaces. This reduces sliding resistance and automatically corrects movement trajectory deviations through the inclined surface guidance. For example, when the leg lift assembly 40 experiences a slight misalignment during frequent reciprocating movements, the inclined contact of the wedge-shaped mounting blocks 222 generates a self-correcting force, while the rigid support of the side mounting rods 221 maintains the overall structural stability.

[0097] Please see Figure 2 , Figure 3 and Figure 4This application further proposes a backrest assembly for a rocking sofa bed, including at least two support components 50 and a backrest. The two support components 50 are mounted on both sides of a fixed frame 20, and the backrest is connected to the two support components 50. Each support component 50 includes a first movable member 51, a second movable member 52, a backrest support frame 53, a third movable member 54, a crossbar 55, a fourth movable member 56, and a backrest fixing frame 57. One end of the first movable member 51 is hinged to the fixed frame 20, and the second movable member 52 is hinged to the other end of the first movable member 51. The backrest support frame 53 is mounted on a footrest assembly 40. One end of the third movable member 54 is hinged to the backrest support frame 53. Both ends of the crossbar 55 are hinged to the other ends of the second movable member 52 and the third movable member 54, respectively. One end of the fourth movable member 56 is hinged to the second movable member 52. The backrest fixing frame 57 is hinged to the other end of the fourth movable member 56 and also hinged to the third movable member 54.

[0098] In this embodiment, the support component 50 refers to a linkage mechanism composed of multiple movable parts. Specifically, it can be implemented by connecting metal rods through hinges, forming a deformable frame structure through multi-level hinges. The first movable part 51 is a basic support rod, specifically an L-shaped steel piece, used to form a rotation fulcrum between the fixed frame 20 and the second movable part 52. The second movable part 52 is an intermediate transmission rod, specifically a rectangular steel tube, used to connect the first movable part 51 and the crossbar 55 to form a transmission path. The backrest support frame 53 is a load-bearing structure installed on the foot-lifting component 40, specifically a U-shaped channel steel, used to link the foot-lifting action and the backrest movement. The third movable part 54 is a transition rod connecting the crossbar 55 and the backrest support frame 53, specifically a connecting rod with a bushing, used to transmit the displacement of the foot-lifting component 40. The crossbar 55 is a transverse connecting rod, specifically a flat steel with hinge holes, used to synchronize the movement trajectories of the support components 50 on both sides. The fourth movable component 56 refers to the auxiliary support rod, which can be implemented using an adjustable-length connecting rod, used to form a two-way constraint for the backrest fixing frame 57. The backrest fixing frame 57 refers to the main frame that ultimately supports the backrest, which can be implemented using a welded steel pipe frame, used to maintain the shape stability of the backrest.

[0099] Specifically, when the footrest assembly 40 slides along the fixed frame 20, the backrest support frame 53 causes the third movable component 54 to shift, which in turn causes the second movable component 52 to rotate around the hinge point of the first movable component 51 via the crossbar 55. Simultaneously, the fourth movable component 56 adjusts the angle of the backrest fixing frame 57 as the second movable component 52 rotates. During this process, the synchronous hinge action of the third movable component 54 and the fourth movable component 56 causes the backrest fixing frame 57 to form a composite motion trajectory, thereby achieving a smooth transition between the open and retracted states of the backrest. The multi-stage hinge design between the movable components makes the force distribution at each connection point more balanced during the movement of the backrest, avoiding local stress concentration.

[0100] In some specific embodiments, the hinge point between the first movable member 51 and the fixed frame 20 can be located at the upper end of the side frame 22; a roller structure can be configured at the connection between the second movable member 52 and the crossbar 55; and a self-lubricating bushing can be installed at the hinge point between the third movable member 54 and the backrest support frame 53. An adjustable hinge can be used at the connection between the backrest fixing frame 57 and the fourth movable member 56 to facilitate adjustment of the backrest angle according to ergonomic requirements.

[0101] Compared to existing technologies, traditional sofa bed backrest adjustment mechanisms often employ single-axis hinges or sliding rail structures, resulting in limited backrest angle adjustment range and stiff movement trajectories. This solution utilizes a combination of multi-stage moving parts with hinges to form a spatial four-bar linkage mechanism. This allows the backrest to maintain stable support during lifting and lowering while achieving a gradual angle change that conforms to the human body's curves. Compared to single-point hinge structures, this design effectively disperses mechanical stress during movement, extending the mechanism's lifespan.

[0102] Through the above technical solution, this application enables multi-dimensional coordinated movement of the backrest assembly when transitioning between sofa and bed modes, ensuring both the flexibility and precision of backrest angle adjustment and the overall structural load-bearing stability. The multi-stage hinge mechanism design makes the backrest movement trajectory more closely conform to the curve of the human back, providing a smooth support transition during function transitions while reducing the risk of mechanical wear.

[0103] Through the above technical solution, this application achieves multi-dimensional coordinated movement of the backrest assembly during state switching, improving the flexibility and structural reliability of the backrest angle adjustment. The cooperation between the four-bar linkage and the auxiliary transmission structure enables the backrest to stably support the user's back when unfolded, and to fully conform to the contour of the fixed frame 20 when retracted, solving the adjustment jamming problem caused by insufficient freedom of movement in traditional structures. The rigid connection design of the horizontal bar 55 further enhances the torsional resistance of the support assembly 50, preventing asynchronous movement on both sides after prolonged use.

[0104] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A rocking sofa bed, characterized in that, The rocking sofa bed includes: Base; A fixed frame is provided on the base; A driving component, wherein the driving component is disposed on the fixed frame; A foot-lifting assembly is slidably connected to the fixed frame and is drive-connected to the driving assembly. A backrest assembly, one end of which is connected to the footrest assembly, and the other end of which is hinged to the fixed frame; and A controller, electrically connected to the drive assembly, is used to control the reciprocating motion of the drive assembly; The controller controls the drive component to move the foot-lifting component back and forth along the length of the fixed frame, so that the foot-lifting component and the backrest component switch between an open state and a retracted state, forming an automatic rocking motion.

2. The rocking sofa bed as described in claim 1, characterized in that, The foot-lifting component includes: At least two connecting blocks, the two connecting blocks being slidably connected to opposite sides of the fixed frame; At least two footrests, each footrest connected to one of the connecting blocks; the backrest assembly connected to the two footrests; and A seat cushion, which is connected to the two footrests.

3. The rocking sofa bed as described in claim 2, characterized in that, The connecting block includes a connecting strip and a protrusion connected to the connecting strip. The end of the connecting strip away from the protrusion is slidably connected to the fixed frame and is connected to the driving assembly. The protrusion is slidably connected to the fixed frame.

4. The rocking sofa bed as described in claim 1, characterized in that, The driving component includes: A drive motor is mounted on the fixed frame, and the output shaft of the drive motor is connected to a worm gear. A slider, which is connected to the fixed frame and to the lifting foot assembly; A screw, one end of which is connected to the slider; A turbine, which is connected to the other end of the screw and meshes with the worm gear; The drive motor drives the worm gear to rotate, so that the turbine drives the screw to rotate synchronously, and drives the slider to reciprocate along the axial direction of the screw.

5. The rocking sofa bed as described in claim 4, characterized in that, The rocking sofa bed also includes: An airbag pump body is provided, wherein the airbag body is mounted on the fixed frame and electrically connected to the controller, and the airbag pump body is spaced apart from the drive assembly and the foot-raising assembly. A chest-expanding airbag, mounted on both sides of the backrest assembly and connected to the airbag pump body, is used for massaging the user's thoracic spine or upper back area; and The lumbar airbag is installed in the lower half of the backrest assembly and is connected to the airbag pump body for massaging the user's lower back area. The controller controls the airbag pump to inflate and deflate the lumbar airbag and the chest expansion airbag to perform a massage action.

6. The rocking sofa bed as described in claim 5, characterized in that, The rocking sofa bed also includes a hand controller, which is electrically connected to the controller. The hand controller is equipped with a rocking switch, a motor control button, and an airbag switch button, which are used by the user to control various functions of the rocking sofa bed.

7. The rocking sofa bed as described in claim 1, characterized in that, The fixed frame includes: The main frame is mounted on the base; Two side frames, each mounted on one side of the main frame; and Two connecting beams, each of which is connected at both ends to one of the side frames, and the two connecting beams are spaced apart.

8. The rocking sofa bed as described in claim 7, characterized in that, The side frame includes a side mounting rod and a wedge-shaped mounting block connected to the side mounting rod. One end of the foot-lifting assembly is slidably connected to the wedge-shaped mounting block, and the other end of the foot-lifting assembly is slidably connected to the side mounting rod.

9. The rocking sofa bed as described in claim 1, characterized in that, The backrest assembly includes: At least two support components, two of which are mounted on either side of the fixed frame; and The backrest is connected to the two support components.

10. The rocking sofa bed as described in claim 9, characterized in that, The support components include: A first movable component, one end of which is hinged to the fixed frame; The second movable member is hinged to the other end of the first movable member; A backrest support frame, which is mounted on the footrest assembly; The third movable component, one end of which is hinged to the backrest support frame; A horizontal bar, the two ends of which are respectively hinged to the other end of the second movable member and the other end of the third movable member; A fourth movable member, one end of which is hinged to the second movable member; and A backrest fixing frame is hinged to the other end of the fourth movable member and to the third movable member.

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