Cushion and seat

Abstract

The invention relates to a cushion and a seat. The cushion comprises a cushion body, an air pressure detection mechanism, an air path mechanism and a controller. The cushion body is provided with a plurality of mounting areas corresponding to different parts of the lower limbs of the human body respectively, a first air bag is arranged in each mounting area, and each first air bag is connected with a first air pipe and a second air pipe. The air pressure detection mechanism is arranged outside the cushion body, is connected with the first air pipes and is used for acquiring air pressure information of the first air bags. The air path mechanism communicates with the second air pipes and is used for inflating or deflating the first air bag. The controller is electrically connected with the air pressure detection mechanism and the air path mechanism, the controller is used for controlling the air path mechanism to inflate or deflate and can obtain the sitting posture information of the human body according to the air pressure information, and the sitting posture monitoring accuracy is improved through the cushion and the seat.

Description

Technical Field

[0001] This application relates to the technical field of smart home supplies, and particularly to a cushion and a seat. Background Art

[0002] As a daily necessity for people, seats can be seen everywhere in places such as offices, schools, and entertainment venues. With the improvement of people's living standards, the types and functions of seats are constantly being renovated and increased. Seat products are also developing in the direction of "intelligence". Now, there are more and more people working indoors, and the situation of sitting for a long time is becoming more and more common. When the body is in the same sitting position for a long time, the lumbar spine is easily damaged. Therefore, seats that can monitor the user's sitting posture to remind the user of sitting for a long time have gradually appeared on the market.

[0003] However, in the related art, the cushion pressure test scheme based on a thin-film pressure sensor usually requires arranging a large number of sensors under the sponge or latex layer in the seat cushion, and such sensors are easily affected by factors such as temperature change and shear force, resulting in low detection accuracy. Summary of the Invention

[0004] Based on this, it is necessary to provide a cushion and a seat for the problem of how to improve the accuracy of sitting posture monitoring.

[0005] A cushion, comprising:

[0006] A cushion body, the cushion body is provided with a plurality of installation areas corresponding to different parts of the human lower limbs respectively, at least one first airbag is arranged in each installation area, and each first airbag is connected with a first air pipe and a second air pipe;

[0007] An air pressure detection mechanism, the air pressure detection mechanism is arranged outside the cushion body, the air pressure detection mechanism is connected with each first air pipe, and the air pressure detection mechanism is used to obtain the air pressure information of each first airbag; and,

[0008] An air path mechanism, the air path mechanism is communicated with each second air pipe, and the air path mechanism is used to inflate or deflate the first airbag; and,

[0009] A controller, the controller is electrically connected with the air pressure detection mechanism and the air path mechanism, and the controller is used to control the air path mechanism to inflate or deflate and can obtain the human sitting posture information according to the air pressure information.

[0010] Before the user sits on the cushion, the air circuit mechanism can be controlled by the controller to inflate the first airbag, so that the first airbag is filled. Since multiple first airbags are independently arranged in different installation areas in the cushion body, different initial air pressure values can be preset for different first airbags according to the hardness requirements of the cushion, and the air circuit mechanism can be controlled by the controller to respectively inflate and deflate different first airbags, so that the internal air pressure of different first airbags reaches the corresponding initial air pressure value, thereby realizing stepless adjustment of the internal air pressure of each first airbag, ensuring a reasonable body pressure distribution on the cushion, and improving the sitting comfort of the user. When the user sits down, the first airbag bears the load, and the internal air pressure of the first airbag changes. This air pressure change can be sensed by the air pressure detection mechanism through the first air pipe and fed back to the controller. Since different first airbags are respectively arranged in different installation areas corresponding to different parts of the human lower limbs, when the human sitting posture changes, the internal air pressure of each first airbag will also change correspondingly. The air pressure detection mechanism senses the internal air pressure of each first airbag in real time and feeds it back to the controller, so that the controller can analyze the real-time sitting posture of the user according to the internal air pressure values of each first airbag. Compared with the traditional solution of directly arranging multiple pressure sensors in an integrated cushion. In this application, the cushion body is divided into multiple installation areas corresponding to different parts of the human lower limbs, and at least one first airbag is provided in each installation area. The air pressure detection mechanism is connected to each first airbag through different first air pipes respectively to obtain the real-time internal air pressure of each first airbag, so as to decouple the pressure detection of different areas on the cushion and avoid the problem that the pressure detection in adjacent areas interferes with each other in the traditional solution, so that more pressure signal features can be extracted, which is convenient for the identification between different sitting postures. At the same time, the air pressure detection mechanism is connected to the first airbag through the first air pipe, so that the air pressure detection mechanism does not need to be arranged in the cushion body, avoiding the influence of the temperature change and shear force of the cushion body on the air pressure detection mechanism, and improving the accuracy of sitting posture recognition.

[0011] The technical solution will be further described below:

[0012] In one embodiment, the cushion body further includes a frame, the frame is provided with a receiving cavity, a first partition and a second partition are arranged in the receiving cavity, the first partition and the second partition intersect to divide the receiving cavity into multiple independent installation areas, and the first airbags are respectively arranged in each installation area.

[0013] By arranging the first partition and the second partition to intersect to divide the receiving cavity into multiple independent installation areas, and the first airbags are respectively arranged in each installation area, the interference between adjacent first airbags is avoided, and the detection accuracy is improved.

[0014] In one embodiment, a plurality of slots are provided at intervals along the length direction of the first partition plate, and the second partition plate can be inserted into any one of the slots to adjust the sizes of the installation areas.

[0015] By inserting the second partition plate into different slots, the size ratios of the installation areas can be appropriately adjusted according to the body type characteristics of different users, so as to better take into account the recognition of various postures of users with different body types.

[0016] In one embodiment, the first airbag includes an inner bladder and an outer layer covering the inner bladder. Both the first air tube and the second air tube are communicated with the inner bladder and penetrate through the outer layer. An opening is provided on one side of the outer layer opposite to the second partition plate.

[0017] After the first airbag is placed in the installation area, the elastic deformation amount of the side wall of the inner bladder corresponding to the opening is restricted by the second partition plate. When the second partition plate is inserted into different slots and undergoes a position change, the volume of the first airbag will also change accordingly to accommodate users with different body types.

[0018] In one embodiment, the seat cushion body further includes a filling layer, and the filling layer is arranged on the frame and covers all the first airbags; and / or, the seat cushion body further includes a fabric layer, and the fabric layer covers the outside of the frame.

[0019] The comfort of the seat can be improved through the filling layer and the fabric layer.

[0020] In one embodiment, the controller includes a main board, the main board is arranged at intervals below the seat cushion body, the air pressure detection mechanism includes a plurality of air pressure sensors, the plurality of air pressure sensors are all integrated on the main board, and the plurality of air pressure sensors are respectively connected to the first air tubes one by one, and the air pressure sensors are electrically connected to the controller.

[0021] By respectively obtaining the air pressure of each first airbag 11 through each air pressure sensor, decoupling is achieved among the air pressure sensors, so that more air pressure signal characteristics can be extracted, which is convenient for the identification between different sitting postures and improves the accuracy of sitting posture recognition.

[0022] In one embodiment, the air path mechanism is arranged below the seat cushion body. The air path mechanism includes an air pump, a valve body, a main pipe and a plurality of branch pipes. The air pump is connected to the valve body through the main pipe, the valve body is connected to each second air tube through the branch pipes, and the valve body can communicate the main pipe with any one or at least two of the branch pipes.

[0023] The air pump conveys air pressure to the main pipe, and then the valve body makes the main pipe communicate with one or at least two branch pipes to inflate the corresponding first airbag separately.

[0024] In one embodiment, the plurality of first airbags are symmetrically distributed about the center line of the seat cushion body. The branch pipe is provided with a first sub-pipe and a second sub-pipe, and the first sub-pipe and the second sub-pipe are respectively connected to two of the first airbags arranged symmetrically; and / or, the air circuit mechanism further includes a pressure relief valve, and the pressure relief valve is connected to the main pipe.

[0025] By connecting two symmetrically arranged first airbags through the first sub-pipe and the second sub-pipe, the air pressure values of the two left and right symmetric first airbags are ensured to be equal, improving the seating comfort of the user. The pressure relief valve can ensure that the pressure in the air circuit mechanism is within a safe range.

[0026] The present application further provides a seat, including a base, a lumbar support, a backrest, and the above-mentioned seat cushion. The seat cushion body is arranged on the base, and the seat cushion body and the base jointly enclose an installation cavity. The air pressure detection mechanism, the air circuit mechanism, and the controller are all arranged in the installation cavity and connected to the base. The lumbar support is connected to the base, and the backrest is connected to the lumbar support.

[0027] Before the user sits on the seat, the controller can control the air circuit mechanism to inflate the first airbag so that the first airbag is filled. Since multiple first airbags are independently arranged in different installation areas within the seat cushion body, different initial air pressure values can be preset for different first airbags according to the hardness requirements of the seat cushion. The controller can control the air circuit mechanism to respectively inflate and deflate different first airbags, so that the internal air pressure of different first airbags reaches the corresponding initial air pressure values, thereby realizing stepless adjustment of the internal air pressure of each first airbag, ensuring a reasonable body pressure distribution on the seat cushion, and improving the seating comfort of the user. When the user sits down, the first airbag bears the load and the internal air pressure of the first airbag changes. This air pressure change can be sensed by the air pressure detection mechanism through the first air tube and fed back to the controller. Since different first airbags are respectively arranged in different installation areas corresponding to different parts of the human lower limbs, when the human sitting posture changes, the internal air pressure of each first airbag will also change correspondingly. The air pressure detection mechanism senses the internal air pressure of each first airbag in real time and feeds it back to the controller, so that the controller can analyze the user's real-time sitting posture according to the internal air pressure values of each first airbag. Compared with the traditional solution of directly arranging multiple pressure sensors in an integrated seat cushion, in this application, the seat cushion body is divided into multiple installation areas corresponding to different parts of the human lower limbs, and at least one first airbag is provided in each installation area. The air pressure detection mechanism is connected to each first airbag through different first air tubes to respectively obtain the real-time internal air pressure of each first airbag, thereby decoupling the pressure detection of different areas on the seat cushion and avoiding the problem that the pressure detection in adjacent areas interferes with each other in the traditional solution. Therefore, more pressure signal features can be extracted, which is convenient for identifying different sitting postures. At the same time, the air pressure detection mechanism is connected to the first airbag through the first air tube, so there is no need to arrange the air pressure detection mechanism inside the seat cushion body, avoiding the influence of the temperature change and shear force of the seat cushion body on the air pressure detection mechanism, and improving the accuracy of sitting posture recognition.

[0028] In one embodiment, a second airbag is provided in the lumbar support. The second airbag is connected to the third air tube and the fourth air tube. The third air tube is connected to the air pressure detection mechanism, and the fourth air tube is connected to the air circuit mechanism.

[0029] The internal air pressure of the second airbag is obtained by the air pressure detection mechanism and sent to the controller, so that the controller can comprehensively analyze the user's sitting posture by combining the air pressure information of the first airbag and the air pressure information of the second airbag, and improve the accuracy of sitting posture recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application.

[0031] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0032] In addition, the accompanying drawings are not drawn to a scale of 1:1, and the relative sizes of the respective elements are only drawn illustratively in the accompanying drawings and not necessarily according to the actual scale. In the accompanying drawings:

[0033] Figure 1 It is a schematic structural diagram of a seat in an embodiment.

[0034] Figure 2 It is an exploded structural view of a seat cushion in an embodiment.

[0035] Figure 3 It is a schematic structural diagram of a first airbag in an embodiment.

[0036] Figure 4 It is a schematic structural diagram of a frame in an embodiment.

[0037] Figure 5 It is a schematic internal structural diagram of a base in an embodiment.

[0038] Figure 6 It is a schematic structural diagram of a lumbar support in an embodiment.

[0039] Explanation of reference numerals:

[0040] 10. Seat cushion body; 11. First airbag; 111. First air tube; 112. Second air tube; 113. Inner bladder; 114. Outer layer; 115. Opening; 12. Frame; 121. First partition; 122. Second partition; 123. Installation area; 124. Slot; 13. Filling layer; 14. Fabric layer; 20. Air path mechanism; 21. Air pump; 22. Valve body; 23. Main pipe; 24. Branch pipe; 241. First branch; 242. Second branch; 26. Pressure relief valve; 30. Air pressure detection mechanism; 31. Air pressure sensor; 40. Base; 50. Lumbar support; 51. Second airbag; 511. Third air tube; 512. Fourth air tube; 60. Backrest; 70. Controller; 81. Battery module. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0043] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0044] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "couple", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or similar descriptions, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0047] As described in the background art, the functions of general seat cushions are single, usually only improving the comfort of the seat. With the development of technology, some seat cushions that can distinguish the sitting postures of users gradually appear. In the related art, there are mainly three technical solutions for sitting posture monitoring: 1. Detecting and analyzing the human sitting posture based on computer vision technology with optical sensors; 2. A sitting posture monitoring solution with acceleration, multi-axis force sensors or gyroscopes and other sensors arranged on human wearable devices; 3. A sitting posture monitoring solution with pressure sensors arranged on the seat cushion to test the pressure distribution of the cushion in different sitting postures.

[0048] Among the above three technical solutions, the first technical solution based on computer vision is prone to be interfered by environmental light, and it is also difficult to monitor the movements of the human lower limbs in many scenarios. In addition, this solution requires the camera to be turned on, and there may be disputes regarding the protection of user privacy. The operation of the second wearable device solution is relatively cumbersome, the user experience is poor, and the cost is relatively high. The third sitting posture monitoring solution with pressure sensors arranged on the seat cushion has obvious advantages in monitoring the sitting posture and is more convenient to use. However, in such seat cushions, multiple pressure sensors usually need to be arranged at intervals under the integral sponge layer or latex layer in the seat cushion, and the pressure data detected by the pressure sensors is used to identify the user's sitting posture through an algorithm. However, in such seat cushions, when the user sits down, when the pressure sensors detect the pressure in the corresponding area, it is easy to be interfered by the loads in adjacent areas. At the same time, after the user sits down, in addition to the downward pressure, there will also be shear forces between different areas of the seat cushion, and the pressure sensors arranged in the seat cushion are easily affected by the shear forces. In addition, after the user sits on the seat for a period of time, the temperature of the seat cushion will change significantly, and the detection results of the pressure sensors will also be affected by the temperature change. Therefore, the above factors easily lead to poor detection accuracy of the pressure sensors, and further lead to low accuracy in identifying the user's sitting posture.

[0049] Based on this, the present application provides a seat. Specifically, refer to Figure 1 , the seat of one embodiment includes a base 40, a seat cushion, a lumbar support 50 and a backrest 60, wherein the seat cushion is arranged on the base 40, the lumbar support 50 is connected to the base 40, the lumbar support 50 is used to support the user's waist, and the backrest 60 is connected to the lumbar support 50, and the backrest 60 is used to support the user's back.

[0050] Furthermore, the present application also provides a seat cushion that can be applied to a seat to monitor the user's sitting posture. Specifically, refer to Figure 2 and Figure 3, The seat cushion of an embodiment includes a seat cushion body 10, a pressure detection mechanism 30, an air circuit mechanism 20, and a controller 70. The seat cushion body 10 is provided with a plurality of installation areas 123 corresponding to different parts of the human lower limbs respectively. At least one first airbag 11 is provided in each installation area 123. Preferably, in this embodiment, one first airbag 11 is provided in each installation area 123. Each first airbag 11 is connected with a first air pipe 111 and a second air pipe 112. The pressure detection mechanism 30 is arranged outside the seat cushion body 10. In one embodiment, the pressure detection mechanism 30 is arranged at intervals below the seat cushion body 10. The pressure detection mechanism 30 is correspondingly communicated with each first airbag 11 through each first air pipe 111, and the pressure detection mechanism 30 is used to obtain the air pressure information of each first airbag. The air circuit mechanism 20 is communicated with each second air pipe 112, and the air circuit mechanism 20 is used to inflate or deflate the first airbag 11. The controller 70 is electrically connected to both the pressure detection mechanism 30 and the air circuit mechanism 20. The controller 70 is used to control the air circuit mechanism 20 to inflate or deflate and can obtain the human sitting posture information according to the air pressure information. Further, referring to Figure 1 , The seat cushion body 10 can be arranged on the base 40 of the seat. The seat cushion body 10 and the base 40 jointly enclose an installation cavity. The pressure detection mechanism 30, the air circuit mechanism 20, and the controller 70 are all arranged in the installation cavity and fixedly installed in the base 40.

[0051] For the above-mentioned seat cushion and seat, before the user sits down, the controller 70 can control the air circuit mechanism 20 to inflate the first airbag 11 so that the first airbag 11 is filled. Since the multiple first airbags 11 are independently arranged in different installation areas 123 in the seat cushion body 10, different initial air pressure values can be preset for different first airbags 11 according to the hardness requirement of the seat cushion. The controller 70 controls the air circuit mechanism 20 to perform inflation and deflation operations on different first airbags 11 respectively, so that the internal air pressure of different first airbags 11 reaches the corresponding initial air pressure value, thereby realizing stepless adjustment of the internal air pressure of each first airbag 11, ensuring a reasonable body pressure distribution on the seat cushion, and improving the sitting comfort of the user. When the user sits down, the first airbag 11 bears the load, and the internal air pressure of the first airbag 11 changes. This air pressure change can be sensed by the pressure detection mechanism 30 through the first air pipe 111 and fed back to the controller 70. Since different first airbags 11 are respectively arranged in different installation areas 123 corresponding to different parts of the human lower limbs, when the human sitting posture changes, the internal air pressure of each first airbag 11 will also change correspondingly. The pressure detection mechanism 30 senses the internal air pressure of each first airbag 11 in real time and feeds it back to the controller 70, so that the controller 70 can analyze the real-time sitting posture of the user according to the internal air pressure values of each first airbag 11.

[0052] Further, compared with the traditional solution of directly arranging multiple pressure sensors in an integrated seat cushion, in the present application, the seat cushion body 10 is divided into multiple installation areas 123 corresponding to different parts of the human lower limbs, and a first airbag 11 is provided in each installation area 123. The air pressure detection mechanism is connected to each first airbag 11 through different first air pipes 111 one by one to respectively obtain the real-time internal air pressure of each first airbag 11, so as to realize the decoupling of the pressure detection of different areas on the seat cushion, avoid the problem that the pressure detection of adjacent areas interferes with each other in the traditional solution, and thus more pressure signal features can be extracted, which is convenient for the identification between different sitting postures. At the same time, the air pressure detection mechanism 30 is connected to the first airbag 11 through the first air pipe 111, so that the air pressure detection mechanism 30 does not need to be arranged in the seat cushion body 10, avoiding the influence of the temperature change and shear force of the seat cushion body 10 on the air pressure detection mechanism 30, and improving the accuracy of sitting posture recognition.

[0053] See Figure 4 , optionally, in an embodiment, the seat cushion body 10 further includes a frame 12. Preferably, the frame 12 can be fixed to the base 40 by screws. The frame 12 is provided with a receiving cavity for receiving the first airbag 11. A first partition 121 and a second partition 122 are arranged in the receiving cavity. The first partition 121 and the second partition 122 intersect to divide the receiving cavity into multiple independent installation areas 123, and the first airbags 11 are respectively arranged in each installation area 123, so as to avoid interference between adjacent first airbags 11. Further, in this embodiment, three first partitions 121 and two second partitions 122 are arranged in the receiving cavity to divide the receiving cavity into eight installation areas 123 that are symmetric about the left and right, corresponding to the outer side of the left leg, the front side of the left leg, the rear side of the left leg, the left buttock, the outer side of the right leg, the front side of the right leg, the rear side of the right leg, and the right buttock of the human body. In this way, when the user's sitting posture changes, the pressure value changes of the installation areas 123 corresponding to different parts of the human body on the seat cushion body 10 can be collected more fully, so that the controller 70 can easily distinguish different sitting postures of the user.

[0054] Further, a plurality of slots 124 are arranged at intervals along the length direction of the first partition 121, and the second partition 122 can be inserted into any one of the slots 124, so as to adjust the size of each installation area 123. Specifically, the key areas of pressure change corresponding to different postures of users with different body types are different. By inserting the second partition 122 into different slots 124, the size ratio of each installation area 123 can be appropriately adjusted according to the body type characteristics of different users, and the recognition of various postures of users with different body types can be better taken into account.

[0055] See Figure 3, in one embodiment, the first airbag 11 includes an inner bladder 113 and an outer layer 114 covering the outer bladder 113. The first air tube 111 and the second air tube 112 are both communicated with the inner bladder 113 and penetrate through the outer layer 114. An opening 115 is provided on the side of the outer layer 114 opposite to the second partition 122. In this way, the side wall of the inner bladder 113 corresponding to the opening 115 has a relatively large elastic deformation amount, while the remaining side walls of the inner bladder 113 are restricted by the outer layer 114 and have a relatively small elastic deformation amount. When the first airbag 11 is placed in the installation area 123, the elastic deformation amount of the side wall of the inner bladder 113 corresponding to the opening 115 is restricted by the second partition 122. When the second partition 122 is inserted into different slots 124 and undergoes a position change, the volume of the first airbag 11 will also change accordingly to accommodate users of different body types.

[0056] See Figure 2 , in one embodiment, the seat cushion body 10 further includes a filling layer 13. The filling layer 13 is disposed on the frame 12 and covers all the first airbags 11. The filling layer 13 can increase the elasticity of the seat cushion and further improve the comfort of the seat. Preferably, the material of the filling layer 13 can be sponge or latex.

[0057] Furthermore, the seat cushion body 10 further includes a fabric layer 14. The fabric layer 14 covers the outside of the frame 12. In this embodiment, the fabric layer 14 also covers the outside of the filling layer 13. Preferably, the material of the fabric layer 14 can be leather, cotton and linen, technical fabric, etc., which is not limited herein.

[0058] See Figure 5 , in one embodiment, the air pressure detection mechanism 30 includes a plurality of air pressure sensors 31. The plurality of air pressure sensors 31 are connected to the respective first air tubes 111 one by one, and the air pressure sensors 31 are electrically connected to the controller 70. By respectively obtaining the air pressure of each first airbag 11 through each air pressure sensor 31, decoupling is achieved among the air pressure sensors 31, so that more air pressure signal characteristics can be extracted, facilitating the identification between different sitting postures and improving the accuracy of sitting posture recognition. Preferably, the controller 70 includes a main board. The main board is disposed below the seat cushion body 10 and fixedly connected to the base 40. The plurality of air pressure sensors 31 are integrally arranged in an array on the main board, so that the structure of the air pressure detection mechanism 30 is more compact and the space occupied in the installation cavity is reduced.

[0059] See Figure 5, in one embodiment, the air circuit mechanism 20 is disposed in the installation cavity below the seat cushion body. The air circuit mechanism 20 includes an air pump 21, a valve body 22, a main pipe 23, and multiple branch pipes 24. Among them, the air pump 21 is connected to the valve body 22 through the main pipe 23, and the valve body 22 is connected to each second air pipe 112 through the branch pipes 24. The valve body 22 can connect the main pipe 23 with any one or at least two branch pipes 24. Thus, by delivering air pressure to the main pipe 23 through the air pump 21, and then the valve body 22 connecting the main pipe 23 with one or at least two branch pipes 24, the corresponding first airbag 11 can be inflated. Preferably, the valve body 22 includes multiple solenoid valves. The solenoid valves are respectively connected to each branch pipe 24 one by one, and the solenoid valves are connected to the controller 70. By controlling the opening and closing of the solenoid valves through the controller 70, the connection or disconnection between the main pipe 23 and each branch pipe 24 can be controlled.

[0060] Continue to refer to Figure 2 , in one embodiment, multiple first airbags 11 are symmetrically distributed with the center line of the seat cushion body 10 as the axis of symmetry. For example, in this embodiment, the number of the first airbags 11 is eight, and the eight first airbags 11 are symmetrically arranged left and right, corresponding to the outer side of the left leg, the front side of the left leg, the rear side of the left leg, the left buttock, the outer side of the right leg, the front side of the right leg, the rear side of the right leg, and the right buttock of the human body respectively. Further, in combination with Figure 5 , the branch pipe 24 is provided with a first sub-pipe 241 and a second sub-pipe 242. The first sub-pipe 241 and the second sub-pipe 242 are respectively connected to two symmetrically arranged first airbags 11, so as to ensure that the air pressure values of the two symmetrically arranged first airbags 11 are equal and improve the sitting comfort of the user.

[0061] Refer to Figure 5 , in one embodiment, the air circuit mechanism 20 further includes a pressure relief valve 26, and the pressure relief valve 26 is connected to the main pipe 23. The pressure relief valve 26 is used to ensure that the pressure in the air circuit mechanism 20 is within a safe range.

[0062] Refer to Figure 6 , optionally, in one embodiment, a second airbag 51 is provided in the lumbar support 50 of the seat. The second airbag 51 is connected with a third air pipe 511 and a fourth air pipe 512. The third air pipe 511 is connected to the air pressure detection mechanism 30. The air pressure detection mechanism 30 can also obtain the internal air pressure of the second airbag 51 and send it to the controller 70, so that the controller 70 can comprehensively analyze the user's sitting posture by combining the air pressure information of the first airbag 11 and the air pressure information of the second airbag 51, and improve the accuracy of sitting posture recognition. Further, the fourth air pipe 512 is connected to the air circuit mechanism 20, so that the air circuit mechanism 20 can perform inflation and deflation operations on the second airbag 51.

[0063] Optionally, in one embodiment, a charging module and a battery module 91 are further provided in the base 40 to supply power to the air pressure detection mechanism 30, the air circuit mechanism 20, and the controller 70.

[0064] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0065] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A seat cushion, characterized in that, it includes: a seat cushion body, the seat cushion body is provided with a plurality of installation areas corresponding to different parts of the human lower limbs, at least one first airbag is arranged in each installation area, and each first airbag is connected with a first air pipe and a second air pipe; a air pressure detection mechanism, the air pressure detection mechanism is arranged outside the seat cushion body, the air pressure detection mechanism is correspondingly communicated with each first airbag through each first air pipe, and the air pressure detection mechanism is used for obtaining the air pressure information of each first airbag; a gas path mechanism, the gas path mechanism is correspondingly communicated with each first airbag through each second air pipe, and the gas path mechanism is used for inflating or deflating the first airbag; and, a controller, the controller is electrically connected with the air pressure detection mechanism and the gas path mechanism, and the controller is used for controlling the gas path mechanism to inflate or deflate and can obtain the human sitting posture information according to the air pressure information.

2. The seat cushion according to claim 1, characterized in that, the seat cushion body further includes a frame, the frame is provided with a receiving cavity, a first partition board and a second partition board are arranged in the receiving cavity, the first partition board and the second partition board intersect to divide the receiving cavity into a plurality of independent installation areas, and the first airbags are correspondingly arranged in each installation area.

3. The seat cushion according to claim 2, characterized in that, a plurality of slots are arranged at intervals along the length direction of the first partition board, and the second partition board can be inserted into any one of the slots to adjust the size of each installation area.

4. The seat cushion according to claim 3, characterized in that, the first airbag includes an inner bladder and an outer layer covering the inner bladder, the first air pipe and the second air pipe both penetrate through the outer layer and are communicated with the inner bladder, and an opening is arranged on one side of the outer layer opposite to the second partition board.

5. The seat cushion according to claim 2, characterized in that, the seat cushion body further includes a filling layer, the filling layer is arranged on the frame and covers all the first airbags; and / or, the seat cushion body further includes a fabric layer, and the fabric layer covers the outside of the frame.

6. The seat cushion according to claim 1, characterized in that, the controller includes a main board, the main board is arranged below the seat cushion body, the air pressure detection mechanism includes a plurality of air pressure sensors, the plurality of air pressure sensors are integrated on the main board, and the plurality of air pressure sensors are correspondingly connected with each first air pipe.

7. The seat cushion according to claim 1, characterized in that, the gas path mechanism is arranged below the seat cushion body, the gas path mechanism includes an air pump, a valve body, a main pipe and a plurality of branch pipes, the air pump is connected with the valve body through the main pipe, the valve body is connected with each second air pipe through the branch pipes, and the valve body can communicate the main pipe with any one or at least two branch pipes.

8. The seat cushion according to claim 7, characterized in that, The multiple first airbags are symmetrically distributed with respect to the center line of the seat cushion body. The branch pipe is provided with a first sub-pipe and a second sub-pipe, and the first sub-pipe and the second sub-pipe are respectively connected to two symmetrically arranged first airbags; and / or, The air circuit mechanism further includes a pressure relief valve, and the pressure relief valve is connected to the main pipe.

9. A seat, characterized in that, it includes a base, a lumbar support, a backrest, and the seat cushion according to any one of claims 1-8. The seat cushion body is arranged on the base, and the seat cushion body and the base jointly enclose an installation cavity. The air pressure detection mechanism, the air circuit mechanism, and the controller are all arranged in the installation cavity and connected to the base. The lumbar support is connected to one side of the base, and the backrest is connected to the lumbar support.

10. The seat according to claim 9, characterized in that, a second airbag is arranged in the lumbar support. The second airbag is connected with a third air pipe and a fourth air pipe. The third air pipe is connected to the air pressure detection mechanism, and the fourth air pipe is connected to the air circuit mechanism.

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