Electric lifting sofa chair bed

Abstract

The utility model relates to the technical field of sofas, and discloses an electric lifting sofa chair bed, which aims to solve the technical problem that the conventional sofa lacks a leg adjusting function and cannot provide comfortable support for the whole body of a user, and is characterized in that an armrest rail is arranged at the side part of a bottom plate, and a mattress is arranged on the bottom plate; a bottom fixing frame used for supporting is arranged at the bottom of the mattress, a lifting support is arranged in the mattress and comprises a middle-layer fixing frame connected to the middle of the bottom fixing frame, a middle fixing plate block is fixedly connected to the middle-layer fixing frame, and a bed head fixing plate block and a first-stage bed tail fixing plate block are hinged to the two opposite sides of the middle fixing plate block respectively. The first-stage bed tail fixing plate is hinged with a second-stage bed tail fixing plate, and is provided with a first motor for driving the bed head fixing plate and a second motor for driving the first-stage bed tail fixing plate. The adjustable first-stage bed tail fixing plate and the adjustable second-stage bed tail fixing plate are arranged at the tail of the mattress, so that the problem that an existing sofa lacks a leg adjusting function is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to an electric lift sofa chair bed. Background Art

[0002] A sofa is a multi-seat chair equipped with cushions, usually used to provide a comfortable resting and social space. The design of modern sofas usually includes springs or thick foam padding to ensure a soft support feeling when sitting. Armrests are usually designed on both sides of the sofa to facilitate users to relax their arms, making it an indispensable part of soft furniture.

[0003] With the acceleration of the modern life rhythm, more and more people face the problem of maintaining a fixed sitting posture for a long time, especially those who are engaged in office work or need to face the computer for a long time. A sedentary lifestyle will lead to the accumulation of physical fatigue. Keeping the same posture for a long time is not only easy to cause soreness, but also affects the flexibility of muscles and the health of the body. Therefore, the sofa has become an ideal place for many people to relax after a busy day at work. People usually lie on the sofa and use its soft cushions and armrests to relieve the body tension and help relax the whole body.

[0004] However, the existing sofa designs on the market have some limitations in functionality. Although many sofas have the function of electrically adjusting the backrest, allowing users to adjust their sitting postures according to their own needs and find the most comfortable angle, for the support and adjustment function of the legs, many sofas do not have corresponding designs. When sitting or lying on the sofa for a long time, the legs cannot be effectively supported, which may cause discomfort in the legs for users during use. Especially during long-term rest, the blood circulation in the legs is easily affected.

[0005] Although the sofa plays a great role as a relaxation tool, due to the lack of comfort and support design for the legs, in view of this, an electric lift sofa chair bed is needed to solve the existing problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an electric lift sofa chair bed to solve the technical problem that the existing sofas lack leg adjustment function and cannot provide comfortable support for the whole body of users.

[0007] To achieve the above purpose, the specific technical solution of an electric lift sofa chair bed of the utility model is as follows:

[0008] An electric lift sofa chair bed, comprising a bottom plate, with armrest rails provided on the sides of the bottom plate, a mattress provided on the bottom plate, the mattress being used to adjust its front - rear inclination through lifting, a bottom fixing frame for support provided at the bottom of the mattress, a lifting support frame provided inside the mattress, the lifting support frame including a middle - layer fixing frame connected to the middle of the bottom fixing frame, a middle fixing plate fixedly connected to the middle - layer fixing frame, a head - end fixing plate and a first - level tail - end fixing plate respectively hinged to the opposite sides of the middle fixing plate, the first - level tail - end fixing plate hinged to a second - level tail - end fixing plate, a first motor for driving the head - end fixing plate and a second motor for driving the first - level tail - end fixing plate are provided, the two ends of the first motor are respectively hinged to the middle - layer fixing frame and the head - end fixing plate, and the two ends of the second motor are respectively hinged to the middle - layer fixing frame and the first - level tail - end fixing plate.

[0009] This electric lift sofa chair bed realizes the multi - functional combination of a sofa and a bed by setting armrest rails and a lift - adjustable mattress. It can not only provide comfortable sitting support but also meet different lying postures' needs by adjusting the inclination of the mattress. The design of the bottom fixing frame and the lifting support frame ensures the stability of the whole structure and improves the comfort experience of users at different angles. The multi - layer plate hinged structure of the lifting support frame allows the head - end and the tail - end to be independently adjusted by motor drive respectively, enabling the head and legs to obtain precise support and adjustment, further enhancing the comfort and personalized experience. The design of the motor ensures the smoothness and stability of the adjustment process, provides an easy - to - operate electric control function, provides intelligent and adjustable full - body support for users, and solves the technical problem that traditional sofas cannot provide comfortable full - body support.

[0010] Furthermore, the armrest rails include a left rail located on the left side of the bottom plate and a right rail located on the right side of the bottom plate.

[0011] By respectively setting the left rail and the right rail on the left and right sides of the bottom plate, the electric lift sofa chair bed not only increases the stability of the overall structure but also provides support for the user's arms, improving the comfort and sense of security during sitting and lying. The setting of the left and right rails enables users to obtain good support effects in different body positions, enhancing the use experience.

[0012] Furthermore, a backrest plate is also provided at the rear side of the bottom plate.

[0013] The backrest plate provided at the rear side of the bottom plate further improves the functionality of the sofa chair bed. Users can rely on the backrest plate in the seat mode and enjoy comfortable backrest support. This design not only conforms to ergonomics but also ensures that the back can be fully supported during long - time sitting and lying, reducing fatigue.

[0014] Furthermore, the lifting bracket is formed into a cushion body by sponge fitting or foaming. A speaker, an audio oscillator, a magnetic air suction valve, and an air pump are installed inside the cushion body. A massage airbag layer is provided on the cushion body, and a wrapping layer is provided for wrapping the massage airbag layer, the cushion body, and the lifting bracket.

[0015] By fitting the lifting bracket with sponge or foaming it into a cushion body, the comfort of the sofa chair bed can be effectively improved, enabling the cushion body to have good shape retention while providing soft support. The speaker and audio oscillator installed inside the cushion body can provide multi-sensory enjoyment. Users can not only feel the vibration massage but also obtain a sound experience through the speaker, further relaxing the body and mind. The setting of the magnetic air suction valve and the air pump can intelligently control the inflation and deflation of the massage airbag layer, providing a customized massage experience for users.

[0016] Furthermore, the massage airbag layer is sequentially divided into a neck airbag area, a shoulder airbag area, a waist airbag area, a hip airbag area, and a knee airbag area from the head to the tail. A single-layer airbag is provided in the shoulder airbag area, double-layer airbags are provided in the neck airbag area, hip airbag area, and knee airbag area, and both single-layer and double-layer airbags are provided in the waist airbag area.

[0017] Furthermore, the electric lifting sofa chair bed is provided with a power input interface and a power adapter connected to the power input interface.

[0018] Furthermore, a controller for lifting adjustment, airbag inflation and deflation, and audio playback and audio oscillator massage is provided, as well as a remote control for remotely controlling the controller.

[0019] Furthermore, the controller includes a central control processing module. The central control processing module is respectively connected to a first motor, a second motor, a magnetic air suction valve, an air pump, an audio conversion output device, a pressure sensor, and a wireless communication module. The magnetic air suction valve is respectively connected to the air pump and the massage airbag through an air pipe. The audio conversion output device is sequentially connected to the speaker and the audio oscillator through a power amplifier processor and a frequency divider.

[0020] Furthermore, the wireless communication module is a Wi-Fi communication module, a Bluetooth module, an RF module, or an infrared module.

[0021] An electric lifting sofa chair bed provided by the present utility model has the following advantages:

[0022] The electric lift sofa chair bed realizes the adjustable function of the front and rear inclination of the mattress by setting up a lifting bracket, improving the comfort of users in different postures. Driven by the first motor for the head fixed plate and the second motor for the first-level foot fixed plate, users can flexibly adjust the angles of the head and legs according to their own needs, achieving the effect of full-body support and relieving the fatigue caused by sitting or lying for a long time. The design of the multi-level foot fixed plate further enhances the adjustment range of the legs, ensuring that users can obtain a more precise comfortable experience and improving the versatility and convenience of use of the electric lift sofa chair bed.

[0023] In addition, by setting a cushion body on the lifting bracket, the comfort of the sofa chair bed is enhanced. Combining the design of a speaker and an audio oscillator, the functions of audio playback and vibration massage are realized, providing users with a dual enjoyment of audio-visual and massage. The massage airbag layer on the cushion body can precisely massage different body parts, and the zoning design provides multiple massage intensities from the head to the knees to meet the massage needs of different parts and enhance the overall comfort. The cushion body is composed of foamed or high-elastic sponge, providing soft and elastic support and further improving the comfort experience of users. The electric lift sofa chair bed is equipped with a power input interface and a power adapter to ensure the stable power supply of the device and the normal operation of the electric functions. The settings of the controller and the remote control enable users to conveniently adjust functions such as the height of the sofa chair bed, the inflation and deflation of the airbag, and audio playback, improving the intelligence and convenience of use. The central control processing module integrates various control systems, including motors, airbags, audio, and air pressure sensors, ensuring the coordinated operation of each function and providing a comprehensive intelligent control experience. The addition of a wireless communication module provides users with multiple control options, including Wi-Fi, Bluetooth, RF, and infrared modules. Users can perform convenient remote operations through mobile phones or remote controls, increasing the flexibility and adaptability of operations. Brief Description of the Drawings

[0024] Figure 1 It is a structural diagram of the electric lift sofa chair bed in the use state of Embodiment 1 provided by the present utility model;

[0025] Figure 2 It is a first-state structural decomposition diagram of Embodiment 1 provided by the present utility model;

[0026] Figure 3 It is a second-state structural decomposition diagram of Embodiment 1 provided by the present utility model;

[0027] Figure 4 It is the structural diagram of the electric lift sofa chair bed in the use state of Embodiment 2 provided by the present utility model Figure 1 ;

[0028] Figure 5The structural diagram of the electric lifting sofa chair bed in the second embodiment provided by the present utility model in the use state Figure 2 ;

[0029] Figure 6 The structural diagram of the electric lifting sofa chair bed in the third embodiment provided by the present utility model in the use state Figure 1 ;

[0030] Figure 7 The structural diagram of the electric lifting sofa chair bed in the third embodiment provided by the present utility model in the use state Figure 2 ;

[0031] Figure 8 The first view structure diagram of the lifting bracket provided by the present utility model;

[0032] Figure 9 The second view structure diagram of the lifting bracket provided by the present utility model;

[0033] Figure 10 The third view structure diagram of the lifting bracket provided by the present utility model;

[0034] Figure 11 The exploded view of the mattress structure provided by the present utility model;

[0035] Figure 12 The structural diagram of the partition arrangement of the massage air bags provided by the present utility model;

[0036] Figure 13 The structural diagram of the up-and-down layered arrangement of the massage air bags provided by the present utility model;

[0037] Figure 14 The block diagram of the working principle provided by the present utility model.

[0038] In the figure: 3, lifting bracket; 10, bottom plate; 20, left column; 30, mattress; 40, right column; 60, backrest plate; 300, bottom fixing frame; 301, middle fixing frame; 302, middle fixing plate; 303, head fixing plate; 304, first bed tail fixing plate; 305, second bed tail fixing plate; 306, auxiliary support frame; 307, first motor; 308, second motor; 310, cushion body; 311, audio oscillator; 312, speaker; 313, air pump; 314, magnetic suction valve; 315, control box shell; 316, control board; 317, control box bottom shell; 320, upper wrapping layer; 330, massage air bag layer; 331, upper air bag; 332, lower air bag; 340, lower wrapping layer; 350, air pipe; 501, mobile phone; 502, remote control; 503, power adapter; 504, power input interface. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0040] Embodiment 1

[0041] Referring to Figures 1 to 3 , the present utility model provides an electric lift sofa chair bed, including a bottom plate 10. Armrest rails are respectively arranged on both sides of the bottom plate 10. The armrest rails include a left rail 20 on the left side and a right rail 40 on the right side. A mattress 30 is arranged on the bottom plate 10, and the mattress 30 is used to adjust its front-back inclination by lifting. The mattress 30 and the bottom plate 10 are rectangular, and the mattress 30 and the bottom plate 10 are longitudinally arranged.

[0042] Embodiment 2

[0043] Referring to Figures 4 to 5 , the present utility model provides an electric lift sofa chair bed, including a bottom plate 10. Armrest rails are only arranged on one side of the bottom plate 10 respectively. A mattress 30 is arranged on the bottom plate 10, and the mattress 30 is used to adjust its front-back inclination by lifting. A backrest plate 60 is further arranged at the rear side of the bottom plate 10. The mattress 30 and the bottom plate 10 are rectangular, and the mattress 30 and the bottom plate 10 are horizontally arranged.

[0044] Embodiment 3

[0045] Referring to Figures 6 to 7 , the present utility model provides an electric lift sofa chair bed, including a bottom plate 10. Armrest rails are respectively arranged on both sides of the bottom plate 10. The armrest rails include a left rail 20 on the left side and a right rail 40 on the right side. A mattress 30 is arranged on the bottom plate 10, and the mattress 30 is used to adjust its front-back inclination by lifting. A backrest plate 60 is further arranged at the rear side of the bottom plate 10. The mattress 30 and the bottom plate 10 are rectangular, and the mattress 30 and the bottom plate 10 are horizontally arranged.

[0046] Based on the above embodiments, referring to Figures 8 to 10, a bottom fixing frame 300 for support is provided at the bottom of the mattress 30, and a lifting support 3 is arranged inside the mattress 30. The lifting support 3 includes a middle-layer fixing frame 301 connected to the middle of the bottom fixing frame 300. A middle fixing plate 302 is fixedly connected to the layer fixing frame. Head fixing plates 303 and first-level foot fixing plates 304 are respectively hinged to opposite sides of the middle fixing plate 302. The first-level foot fixing plate 304 is hinged to a second-level foot fixing plate 305. A first motor 307 for driving the head fixing plate 303 and a second motor 308 for driving the first-level foot fixing plate 304 are provided. Both ends of the first motor 307 are respectively hinged to the middle-layer fixing frame 301 and the head fixing plate 303, and both ends of the second motor 308 are respectively hinged to the middle-layer fixing frame 301 and the first-level foot fixing plate 304.

[0047] This design ensures the overall stability and comfort of the electric lift sofa chair bed by setting handrails on both sides of the bottom plate 10 and arranging the mattress 30 on the bottom plate 10. Through the lifting and adjusting function of the mattress 30, the user can adjust the front and rear tilt angles of the mattress 30 according to needs to improve the comfort of sitting and lying. The combination of the fixing frame at the bottom of the mattress 30 and the lifting support 3 provides stable support for the entire structure.

[0048] The design of the lifting support 3, including the articulated combination of the middle-layer fixing frame 301 with the middle fixing plate 302, the head fixing plate 303, and the first-level and second-level foot fixing plates 305, enables the electric lift sofa chair bed to flexibly adjust the height and angle of the head and legs at different positions. This structure ensures the smoothness and accuracy of the adjustment through the articulation of multiple layers of plates, improving the overall comfort.

[0049] By driving the head fixing plate 303 with the first motor 307 and driving the first-level foot fixing plate 304 with the second motor 308, the user can conveniently achieve multi-angle adjustment of the electric lift sofa chair bed through electric control. The articulated design of the motor makes the adjustment process smoother, improves the accuracy of the adjustment, and enhances the user experience.

[0050] The middle-layer fixing frame 301, the first-level foot fixing plate 304, and the head fixing plate 303 are respectively provided with fork-shaped parts, and both ends of the first motor 307 and the second motor 308 are respectively hinged to the fork-shaped parts.

[0051] The middle-layer fixing frame 301, the first-level foot fixing plate 304, and the head fixing plate 303 are respectively provided with fork-shaped parts, ensuring the more stable and firm articulated connection of the motor, thus avoiding the loosening or instability of the structure during the adjustment process. This design improves the reliability of the structure of the electric lift sofa chair bed during the lifting process.

[0052] The height between the bottom fixing frame 300 and the middle fixing frame 301 is greater than the height between the middle fixing plate 302 and the middle fixing frame 301, so that the bottom fixing frame 300 is completely located outside the mattress 30.

[0053] The length of the bottom fixing frame 300 is greater than the length of the middle fixing frame 301, and the length of the middle fixing frame 301 is greater than the length of the middle fixing plate 302.

[0054] The design with the lengths of the bottom fixing frame 300, the middle fixing frame 301, and the middle fixing plate 302 decreasing in sequence ensures that the structures of each layer will not interfere with each other during support, while optimizing the overall space layout and improving the comfort and operability during use.

[0055] The electric lift sofa chair bed is provided with a power input interface 504 and a power adapter 503 connected to the power input interface 504. The settings of the power input interface 504 and the power adapter 503 ensure that the electric lift sofa chair bed can be stably and safely powered by an external power supply, guarantee the normal operation of the motor and other electric devices, enhance the durability and practicality of the device, and provide low-voltage direct current through the power adapter 503 to ensure safety.

[0056] There is a controller for lift adjustment, airbag inflation and deflation, and audio playback, and a remote control 502 for remotely controlling the controller. The controller for lift adjustment, airbag inflation and deflation, and audio playback, combined with the design of the remote control 502, enables users to easily adjust various functions of the electric lift sofa chair bed through remote control, enhancing the intelligence and convenience of the product.

[0057] Refer to Figure 11 , a cushion body 310 is arranged on the lifting bracket 3, a speaker 312 and an audio oscillator 311 are installed in the cushion body 310, a massage airbag layer 330 is arranged on the cushion body 310, and a wrapping layer for wrapping the massage airbag layer 330, the cushion body 310, and the lifting bracket 3 is provided.

[0058] The wrapping layer includes an upper wrapping layer 320 located at the upper part and a lower wrapping layer 340 located at the lower part. The upper wrapping layer 320 is used to wrap the top surface and the peripheral sides, and the lower wrapping layer 340 is used to cover the bottom surface of the wrapping.

[0059] Preferably, the cushion body 310 is made of foamed or high-elastic sponge.

[0060] This design enhances the comfort of the electric lift sofa bed by setting a cushion body 310 on the lifting bracket 3. The cushion body 310 is made of foaming or high-elastic sponge, providing soft and elastic support, and further improving the sitting and lying experience of users. The built-in speakers 312 and audio vibrators 311 in the cushion body 310 can provide stereo sound effects and vibration massage functions. Combined with the massage airbag layer 330, it realizes multi-sensory comfort enjoyment, bringing a dual experience of hearing and touch while relaxing the body. The up-and-down structure design of the wrapping layer ensures the overall aesthetic appearance and effectively protects the internal components, extending the service life of the product.

[0061] See Figure 12 and Figure 13 , the massage airbag layer 330 is distributed in upper and lower layers, including an upper airbag 331 and a lower airbag 332. The massage airbag layer 330 is sequentially divided into a neck airbag area, a shoulder airbag area, a waist airbag area, a hip airbag area, and a knee airbag area from the head to the tail. A single-layer airbag is set in the shoulder airbag area, double-layer airbags are set in the neck airbag area, hip airbag area, and knee airbag area, and both single-layer and double-layer airbags are set in the waist airbag area.

[0062] By dividing the massage airbag layer 330 into an upper airbag 331 and a lower airbag 332 and distributing them in the neck, shoulder, waist, hip, and knee areas, this design can provide a customized massage experience for different body parts. Double-layer airbags are used in the neck, hip, and knee to provide stronger support and massage intensity, while the single-layer airbag in the shoulder area helps to provide a more gentle massage effect. Both single-layer and double-layer airbags are set in the waist to flexibly adjust the intensity and meet the diverse massage needs of users.

[0063] See Figure 14 , the controller includes a central control processing module, which is respectively connected to a first motor 307, a second motor 308, a magnetic air suction valve 314, an air pump 313, an audio conversion output device, a pressure sensor, and a wireless communication module. The magnetic air suction valve 314 is respectively connected to the air pump 313 and the massage airbag through an air pipe 350. The audio conversion output device is sequentially connected to the speaker 312 and the audio vibrator 311 through a power amplifier processor and a frequency divider.

[0064] Integration of the controller with the airbag and audio system: The central control processing module integrates devices such as the first motor 307, the second motor 308, the air pump 313, the audio conversion output device, and the pressure sensor, realizing comprehensive control of the lifting of the mattress 30, the inflation and deflation of the massage airbag, and audio playback. The air pump 313 is connected to the massage airbag through the magnetic air suction valve 314 and the air pipe 350, which can accurately control the inflation and deflation of the airbag, providing an intelligent massage experience and improving the comfort and convenience of use.

[0065] Among them, the wireless communication module is a Wi-Fi communication module, a Bluetooth module, an RF module or an infrared module. By selecting the Wi-Fi communication module or the Bluetooth module, the user can control the mattress lifting, airbag massage and audio playback through a mobile phone. By selecting the RF module or the infrared module, the user can control the mattress lifting, airbag massage and audio playback through a remote control.

[0066] Multiple selection options for the wireless communication module: By selecting the Wi-Fi communication module or the Bluetooth module, the user can perform remote control through the mobile phone 501, conveniently adjusting the functions of lifting, airbag massage and audio playback of the mattress 30, improving the intelligent level of the device. At the same time, the selection of the RF module or the infrared module provides the convenience of operating with the remote control 502 for the user, meeting the operation preferences of different users.

[0067] A wired control panel is also set up, enabling the user to directly control the mattress lifting, airbag massage and audio playback through the panel buttons.

[0068] In addition to the wireless control options, setting up a wired control panel provides another direct operation method, enabling the user to still control the lifting of the mattress 30, the operation of the massage airbag and the audio playback function through the panel buttons even without a wireless connection. This design enhances the flexibility and reliability of the operation, providing the user with more comprehensive control options.

[0069] In summary, an electric lift sofa chair bed provided by the present utility model realizes the versatility and intelligent operation of the electric lift sofa chair bed, and improves the overall comfort and user experience. First of all, the structural design of the electric lift sofa chair bed ensures stability and adjustment flexibility. The armrests arranged on both sides of the bottom plate and the lifting and adjustment function of the mattress enable users to freely adjust the front and rear tilt angles according to their needs, improving the comfort of sitting and lying. The articulated design of the lifting bracket and the multi-layer plates ensures flexible adjustment of the head and legs, and the motor control makes the adjustment process smooth and stable, ensuring the accuracy and convenience of the adjustment. The introduction of the cushion body, especially the built-in speakers and audio vibrators, combined with the zoned layout of the massage airbag layer, realizes a stereo sound effect, vibration massage and multi-sensory relaxation experience. The airbag distribution provides customized massage for different body parts. The neck, hip and knee areas use double-layer airbags to provide stronger support, the shoulder uses a single-layer airbag to provide gentle massage, and the waist provides multiple massage intensity options through the combination of single-layer and double-layer airbags. In addition, the control system integrates functions such as lifting, electric adjustment, airbag inflation and deflation, and audio playback. Through the wireless communication module, users can choose Wi-Fi, Bluetooth, RF or infrared modules to achieve remote or remote control operation, enhancing the intelligent level of the product. At the same time, a wired control panel is set to provide users with a direct operation method when the wireless connection is unavailable, improving the operation convenience and reliability of the product. The overall design not only improves the comfort during use, but also enhances the versatility and safety of the device.

[0070] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An electric lift sofa chair bed, comprising a bottom plate (10), wherein an armrest railing is arranged on the side of the bottom plate (10), and is characterized in that, A mattress (30) is provided on the bottom plate (10). The mattress (30) is used to adjust the front-back inclination thereof through lifting. A bottom fixing frame (300) for support is provided at the bottom of the mattress (30). A lifting bracket (3) is provided inside the mattress (30). The lifting bracket (3) includes a middle fixing frame (301) connected to the middle of the bottom fixing frame (300). A middle fixing plate (302) is fixedly connected to the middle fixing frame (301). A head fixing plate (303) and a first-stage tail fixing plate (304) are respectively hinged to opposite sides of the middle fixing plate (302). The first-stage tail fixing plate (304) is hinged to a second-stage tail fixing plate (305). A first motor (307) for driving the head fixing plate (303) and a second motor (308) for driving the first-stage tail fixing plate (304) are provided. Two ends of the first motor (307) are respectively hinged to the middle fixing frame (301) and the head fixing plate (303). Two ends of the second motor (308) are respectively hinged to the middle fixing frame (301) and the first-stage tail fixing plate (304).

2. The electric lift sofa chair bed according to claim 1, wherein The armrest includes a left rail (20) located on the left side of the bottom plate (10) and a right rail (40) located on the right side of the bottom plate (10).

3. An electric lift sofa chair bed according to claim 1 or 2, characterized in that, A backrest plate (60) is further provided at the rear side of the bottom plate (10).

4. An electric lift sofa chair bed according to claim 1, characterized in that, The lifting bracket is formed into a cushion body (310) by sponge fitting or foaming. A speaker (312), an audio oscillator (311), a magnetic air suction valve (314) and an air pump (313) are installed inside the cushion body (310). A massage airbag layer (330) is provided on the cushion body (310). A wrapping layer for wrapping the massage airbag layer (330), the cushion body (310) and the lifting bracket (3) is provided.

5. An electric lift sofa chair bed according to claim 4, characterized in that, The massage airbag layer is sequentially divided into a neck airbag area, a shoulder airbag area, a waist airbag area, a hip airbag area and a knee airbag area from the head to the tail. A single-layer airbag is provided in the shoulder airbag area. Double-layer airbags are provided in the neck airbag area, the hip airbag area and the knee airbag area. Both a single-layer airbag and a double-layer airbag are provided in the waist airbag area.

6. The electric lift sofa chair bed according to claim 1, characterized in that, The electric lift sofa chair bed is provided with a power input interface (504) and a power adapter (503) connected to the power input interface.

7. An electric lift sofa chair bed according to claim 1, characterized in that, A controller for lift adjustment, airbag inflation and deflation, audio playback and audio oscillator massage, and a remote control (502) for remotely controlling the controller are provided.

8. An electric lift sofa chair bed according to claim 7, characterized in that, The controller includes a central control processing module. The central control processing module is respectively connected to a first motor (307), a second motor (308), a magnetic air suction valve (314), an air pump (313), an audio conversion output device, a pressure sensor and a wireless communication module. The magnetic air suction valve (314) is respectively connected to the air pump (313) and the massage airbag through an air pipe (350). The audio conversion output device is sequentially connected to the speaker (312) and the audio oscillator (311) through a power amplifier processor and a frequency divider.

9. The electric lift sofa chair bed according to claim 8, characterized in that, The wireless communication module is a Wi-Fi communication module, a Bluetooth module, an RF module or an infrared module.

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