Air bag system mattress based on dot matrix air path control

Abstract

The invention relates to the field of mattresses, in particular to an air bag system mattress based on dot matrix air path control. An existing air bag massage mattress is small in massage range, fixed in massage area and complex and bloated in control air path structure. The air bag system mattress based on dot matrix air path control comprises a control box, an air bag mounting layer and a plurality of air bags which are arranged on the air bag mounting layer and arranged on the same plane, an air path connected with the control box is connected between the air bag layer and the control box, the air path is composed of a plurality of air paths in the longitudinal and transverse directions, and each air path is provided with an independent electromagnetic valve. The longitudinal and transverse air paths are projected into a grid in the vertical direction, grid nodes correspond to the node control valves in a one-to-one mode, each air bag is connected into the longitudinal and transverse air paths of the grid nodes through one node control valve, and the node control valves supply air to the air bags only when the longitudinal and transverse air paths are ventilated. The air path control structure is simplified, more air bags are arranged for air paths, the number of increased electromagnetic valves is limited, the sleeping posture of the human body can be recognized, and the massage effect is optimized.

Description

Technical Field

[0001] This invention relates to the field of mattresses, and in particular to a mattress with an airbag system based on dot matrix air path control. Background Technology

[0002] Smart mattresses are developing rapidly and becoming increasingly familiar and tried, becoming a new growth point in the mattress industry. There are many reasons for poor sleep quality, and pre-sleep massage can relieve muscle tension and pain, promote blood circulation, and reduce stress and anxiety. Currently, there are massage mattresses on the market that use airbag inflation and deflation for massage, improving sleep through basic massage, heating, and sleep monitoring functions. However, these massage mattresses have limited massage coverage; the total number of massage points composed of airbags is small, covering only localized areas and not the whole body. While massage mattresses can incorporate more airbags to expand the massage area, each airbag requires a dedicated air circuit and an independent solenoid valve to control ventilation, resulting in a complex and bulky control circuit structure and significantly increased manufacturing costs. Furthermore, current airbag massage mattresses lack intelligent control and cannot recognize the user's status, especially changes in the position of different body parts on the mattress. They cannot adjust the massage points according to individual body shape and sleeping posture requirements, failing to achieve intelligent dynamic adjustment and optimization. Summary of the Invention

[0003] To address the technical challenges of existing airbag massage mattresses, such as limited massage area and few massage points, and the increased complexity, bulkiness, and cost of increasing the number of airbags due to complex control air circuit structures, this invention provides an airbag system mattress based on a dot-matrix air circuit control. This mattress features a large number of airbag massage points, enabling full-body massage and independent control of each airbag point. The control air circuit structure is simple, eliminating the need for a solenoid valve for each airbag. Furthermore, this invention can intelligently recognize the user's lying posture, identify the body parts requiring massage, and optimize the massage accordingly, improving efficiency and overall massage experience.

[0004] The technical solution adopted by this invention to solve the technical problem is as follows: A mattress with an airbag system based on dot-matrix air path control, comprising a control box, an airbag mounting layer, and multiple airbags arranged in the same plane thereon. Each airbag forms an airbag layer for massage. A support layer is provided below the airbag mounting layer, and a comfort layer is provided on top of the airbag layer. An air path controlled by the control box connects the airbag layer and the control box. The key feature is that each airbag is connected to the air path through an openable / closeable node control valve. The air path consists of multiple longitudinal air paths and multiple transverse air paths, and each transverse air path... Both the lateral and longitudinal air paths are controlled by independent solenoid valves. Each solenoid valve is connected to a control box. The air paths in both directions are projected vertically into a grid shape. Each intersection node of the grid corresponds to a node control valve. The node control valve connects to the corresponding lateral and longitudinal air paths. The node control valve opens when both the connected lateral and longitudinal air paths supply air simultaneously, supplying air to the airbag matched with one of the two air paths. The node control valve closes when both connected air paths are cut off simultaneously or when one of them supplies air. This invention forms a dot-matrix-based air path control structure by combining the node control valves connecting each massage airbag with the lateral and longitudinal air paths. This simplifies the air path control structure, reduces the volume occupied, and lowers costs. The number of air paths and solenoid valves is limited; the number of air paths is simply the sum of the numbers in the lateral and longitudinal directions. Air paths can be shared by node control valves along their path, significantly reducing the number of solenoid valves and air paths. For example, in an N*M grid arrangement, the number of air paths and solenoid valves is N+M, and the number of connected node control valves and airbags is N*M. There's no need to configure an independent air path and solenoid valve for each airbag. The simplified air path structure also makes it possible to deploy a larger number of airbags without worrying about the complexity limiting the number of airbags. A larger number of airbags and independent air supply control for each airbag can achieve both full-body massage and precise airbag point massage. During operation, each node control valve, matched one by one with each grid node, is connected to one airbag. The node control valve only opens when both the connected vertical and horizontal air paths are open, using one of the two air paths to supply air to the airbag. When neither vertical nor horizontal air path is supplied with air, or only one path is supplied with air, the node control valve closes. The airflow of each vertical and horizontal air path can be independently controlled by the solenoid valve matched to that air path. The control box only needs to control the opening and closing of each solenoid valve.

[0005] As a further improvement and supplement to the above technical solution, the present invention adopts the following technical measures: The node control valve has four vent ports and one supply port. The four vent ports are connected in pairs. The node control valve is connected in series with the matching transverse and longitudinal air paths through two sets of vent ports, respectively. The supply port is connected to the airbag. Since the four vent ports are connected in pairs, the two sets of vent ports allow the node control valve to be connected in series on both the transverse and longitudinal air paths simultaneously. Thus, all solenoid valves can be matched with the nodes in the grid-like distribution formed by the transverse and longitudinal air paths. The node control valve is connected to both the transverse and longitudinal air paths simultaneously through the upper and lower sets of vent ports. Each set of vent ports allows the node control valve to be connected in series on the corresponding air path. Specifically, one set of vent ports connects the node control valve in series on the longitudinal air path, and the other set connects the node control valve in series on the transverse air path. The airbag is supplied with air through the supply port.

[0006] The node control valve includes a cylindrical shell closed at both ends and a double-ended valve and spring disposed therein. The inner cavity of the cylindrical shell consists of two upper and lower air passage cavities that are aligned and connected by their axes and a valve cavity in the middle. The upper and lower ends of the valve cavity are open and connected to the two air passage cavities. The double-ended valve consists of a movable valve stem inserted into the valve cavity and two sealing valves at its two ends. The two sealing valves are disposed in the two air passage cavities and can move up and down with the valve stem to alternately seal the open ends of adjacent valve cavities. The side wall of the cylindrical shell outside the two air passage cavities is provided with two air inlets that connect to the corresponding air passage cavities. The two air inlets that connect to the same air passage cavity are a set of air inlets. The side wall of the cylindrical shell outside the valve cavity is provided with an air supply port that connects to the valve cavity. The spring is disposed in one of the upper and lower air passage cavities and abuts against the corresponding sealing valve to seal the open end of the valve cavity. Since the upper and lower air passages of the node control valve are each connected to an air passage, as long as the air pressure in both the longitudinal and transverse air passages can counteract the spring force, the node brake valve can only open when both the longitudinal and transverse air passages are open, thus supplying air to the airbag.

[0007] The cylindrical shell includes a tubular shell open at both ends and two end caps. Each end cap is sealed to the two open ends of the tubular shell by a sealing ring. The inner cavity of the cylindrical shell is the tubular cavity of the tubular shell. The vent and gas supply ports are both located on the side wall of the tubular shell. The cylindrical shell adopts a split structure consisting of the tubular shell and the two end caps, which facilitates the assembly of the valve stem, sealing valve, and spring. The end caps are sealed using sealing rings.

[0008] Each of the four vent ports is equipped with a connecting pipe extending radially outward from the shell. The connecting pipe axes of two vent ports in the same group coincide, and the vertical projections of the connecting pipe axes of the two groups of vent ports form a cross. The connecting pipes of the four vent ports form a cross projection around the circumference, thus enabling the node control valve to be matched with both the longitudinal and transverse air passages. The four connecting pipes are arranged in pairs along the extension directions of the longitudinal and transverse air passages, connecting the node control valve in series to the longitudinal and transverse air passages. Each longitudinal and transverse air passage can be used by multiple node control valves, achieving the universality and commonality of the air passages, thereby simplifying the air passages.

[0009] The sealing valve includes a fitted sealing cap and a sealing gasket, with the sealing gasket facing the open end of the valve cavity. The sealing valves at both ends of the valve stem are respectively fixedly connected by the sealing cap and the valve stem. The sealing valve, composed of the sealing cap and sealing gasket, possesses both good rigidity and sealing performance. The sealing cap can be made of a rigid material such as plastic or metal to provide rigidity, while the sealing gasket can be made of a highly elastic sealing material such as rubber or silicone to provide a tight seal.

[0010] The valve cavity is a double-layered structure consisting of an inner cavity and an outer cavity surrounding it. Both ends of the inner cavity and the outer cavity are open. An integral connecting section is provided between the outer cavity wall and the inner cavity wall. The valve stem passes through the inner cavity, and the open end of the valve cavity is the open end of the outer cavity. The air supply port connects to the outer cavity. The valve cavity satisfies the positioning of the valve stem and the air supply of the valve cavity through the inner and outer double cavities. Without the double cavities, a single-layer valve cavity would have to simultaneously satisfy the valve stem limiting installation and valve cavity air supply, resulting in a large gap between the valve cavity and the valve stem. The valve stem would be prone to skew due to lack of limiting during movement. The connecting section is used to realize the double-layered valve cavity with the shell and cylinder machined as one piece.

[0011] The open end of the outer cavity extends into the gas passage cavity on the same side, and the end of the open end of the outer cavity forms a thin wall that matches the sealing valve. The side of the thin wall that contacts the sealing valve is a flat surface. The combination of the thin wall structure and the flat surface allows the sealing gasket and the open end of the outer cavity to be pressed together through a narrow annular contact surface, improving the sealing performance when the sealing valve and the open end of the outer cavity are sealed.

[0012] The airbag mounting layer comprises an upper and lower stacked airbag positioning layer and an airbag fixing layer. The airbag positioning layer has through holes that match the shape and position of each airbag. The node control valve is embedded in an independent base, which can be made of flexible TPU block material. The base corresponding to each node control valve is placed one by one in several mounting holes in the airbag fixing layer. The airbag matching the node control valve is positioned on the corresponding base. The longitudinal and transverse air paths are laid on the airbag fixing layer and pass through the bases along the laying path. The upper and lower stacked airbag positioning layer and airbag fixing layer constitute the airbag mounting layer. The through holes in the airbag positioning layer can accommodate and limit the uninflated airbag. The base is used to position and install each node control valve. At the same time, the airbag matching the node control valve is also positioned on the base and limited to the airbag fixing layer together with the base. The crisscrossing air paths can be made from readily available air tubing during use.

[0013] The comfort layer is equipped with pressure pads connected to a control box. The control box uses the pressure pad's detection data to sense the body's position on the mattress and control the opening and closing of solenoid valves to activate the corresponding airbags for massage. Through the pressure pad's detection data, the control box can sense the area where the person is lying on the mattress and the pressure at different locations within that area. It then controls the opening and closing of the corresponding solenoid valves, activating the airbags in that area for massage. The pressure at different locations within the area can also be correlated with different body parts such as the back, waist, hips, and legs using existing technology. By comparing the grid formed by the projection of the air paths with the position of the pressure pads, a mapping can be created between all the airbags and the various locations on the pressure pads. The control box activates the corresponding airbags by controlling the opening and closing of the solenoid valves, achieving precise contact between the massage area and the body, thereby optimizing the massage effect. Regardless of the sleeping position, the pressure pads can automatically identify and locate the user, optimizing the massage of the airbags. Different working modes can be selected for airbag inflation and deflation. The control box adjusts the inflation and deflation parameters of the airbags to achieve different massage techniques such as tapping, squeezing, and wave-like movements.

[0014] The beneficial technical effects of this invention are as follows: By combining the node control valves connecting each massage airbag with the longitudinally and transversely arranged air paths, a dot matrix-based air path control structure is formed to control the ventilation of each airbag. This simplifies the air path control structure while enabling each airbag to ventilate, allowing air paths to be shared. The number of air paths and solenoid valves is significantly reduced, thereby reducing the volume occupied by the air path structure and lowering costs. Furthermore, the node control valves have air pipes projected in a cross shape, conforming to the layout of the longitudinal and transverse air paths. Each node control valve can simultaneously connect to air paths in both longitudinal and transverse directions. It can also detect sleeping posture through the pressure pad, output the position of the action dot matrix, and control the airbags in the corresponding area to accurately fit the body for massage, achieving intelligent massage optimization. Attached Figure Description

[0015] Figure 1: Schematic diagram of the mattress structure of the present invention.

[0016] Figure 2 : Schematic diagram of the connection between the airbag and the node control valve.

[0017] Figure 3 : Cross-sectional view of the node control valve structure.

[0018] Figure 4 Side view of the node control valve.

[0019] Figure 5 Top view of the node control valve.

[0020] Figure 6 : Schematic diagram of node control valve closing.

[0021] Figure 7 : Schematic diagram of node control valve opening.

[0022] Figure 8 : A cross-sectional schematic diagram of the switching of the node control valve from open to closed.

[0023] Figure 9 : Table of opening and closing control logic for node control valves.

[0024] Figure 10 : Figure 9 Diagram illustrating the internal air path of the node control valve in state number 1.

[0025] Figure 11 : Figure 9 Diagram illustrating the internal air path of the node control valve in state number 2.

[0026] Figure 12 : Figure 9 Diagram illustrating the internal air path of the node control valve in state number 3.

[0027] Figure 13 : Figure 9 Diagram illustrating the internal air path of the node control valve in state number 4.

[0028] Figure 14 : Schematic diagram of dot matrix gas path usage.

[0029] Figure 15 Schematic diagram of intelligent control process.

[0030] In the diagram: 1. Upper bed cover, 2. Pressure pad, 3. Comfort layer, 4. Airbag positioning layer, 4-1. Through hole, 5. Airbag layer, 5-1. Airbag, 5-2. Protrusion, 6. Airbag fixing layer, 6-1. Mounting hole, 7. Support layer, 8. Lower bed cover, 9. Control box, 10. Node control valve, 11. Tubular shell, 12. Upper end cover, 12-1. Upper sealing groove, 13. Lower end cover, 13-1. Lower sealing groove, 14. Upper sealing cover, 15. Upper sealing gasket, 16. Lower sealing cover, 16-1. Short column, 17. Lower sealing gasket, 18. Valve stem, 19. Sealing ring, 20. Spring, 21. Upper interface, 22. Lower interface, 23. Airbag air inlet, 24. Upper cavity, 25. Lower cavity, 26. Inner cavity, 27. Outer cavity, 28. Base. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1-3 As shown, a mattress with an airbag system based on dot-matrix airflow control includes an outermost mattress cover consisting of an upper mattress cover 1 and a lower mattress cover 8. Inside the mattress cover, pressure pads 2, comfort layers 3, airbag positioning layers 4, airbag layers 5, airbag fixing layers 6, and support layers 7 are stacked from top to bottom. A control box 9 is embedded in the perforated groove of the support layer 7. The pressure pads 2 are connected to the control box 9. The airbag layers consist of several airbags 5-1 arranged in a plane. An airflow controlled by the control box 9 connects the airbag layers 5 and the control box 9. Each airbag 5-1 is connected to the airflow through an openable / closeable node control valve 10. The airflow consists of multiple longitudinal airflow paths and multiple transverse airflow paths. The system consists of two air paths, each with its own independent solenoid valve controlling the air supply. Each solenoid valve is connected to the control box 9 for control. The air paths in both the horizontal and vertical directions are projected vertically into a grid shape. Each intersection node of the grid corresponds to a node control valve 10. The node control valve 10 is connected to the horizontal and vertical air paths where the corresponding node is located. The node control valve 10 opens when the connected horizontal and vertical air paths are supplied with air simultaneously, and supplies air to the air bladder 5-1 of the node control valve 10 matched with one of the two air paths. The node control valve 10 closes when the connected two air paths are cut off simultaneously or when one of them is supplied with air. In addition, the comfort layer can be made of sponge or latex to adjust the sleeping feel and comfort, and to cushion the foreign body sensation of the massage airbags when not massaging; the airbag positioning layer can be made of sponge; the support layer can use existing spring mattress cores or airbag mattress cores; the control box also contains components such as a main control board, air pump, solenoid valve, network module, and air pressure sensor, which are used to control the inflation and deflation of each airbag and can monitor the air pressure in real time and adjust it according to the settings. At the same time, the control box can be connected to the network via the network module to realize wireless remote control operation of the mattress and update and add new massage control programs.

[0033] like Figure 14For example, there are 8 horizontal air passages, designated E1 to E8, and 8 vertical air passages, designated F1 to F8. The total number of solenoid valves required is only 8 + 8, or 16. As shown in the diagram, when the horizontal air passage E4 and the two vertical air passages F4 and F6 are opened, the node control valves at the intersection of the four black solid rings open, supplying air to the corresponding airbags.

[0034] like Figure 2 As shown, the airbags 5-1 in this embodiment are all stacked airbags to achieve a small volume and large stroke. The top surface of the highest point of the airbag 5-1 can also be provided with protrusions 5-2 to enhance the massage effect.

[0035] like Figures 3-8 As shown, the node control valve 10 has four vent ports and one supply port. The four vent ports are connected in pairs. The node control valve 10 is connected in series with the corresponding transverse and longitudinal air passages through two sets of vent ports, respectively. The supply port is connected to the airbag 5-1. Figure 4 As shown, the four air inlets of the node control valve 10 are two upper inlets 21 at the high position and two lower inlets 22 at the low position. The air supply inlet is the air bag air inlet 23. The two upper inlets 21 are connected to each other as a group, and the two lower inlets 22 are connected to each other as a group.

[0036] The specific structure of the node control valve 10 is as follows: Figure 3 and Figure 6 and Figure 7 As shown, it includes a cylindrical shell closed at both ends and a double-ended valve and spring 20 disposed therein. The inner cavity of the cylindrical shell consists of two upper and lower air passage chambers that are aligned and connected by their axes and a valve chamber in the middle. The upper and lower air passage chambers are in... Figure 3 The upper cavity 24 and lower cavity 25 are respectively represented by the upper cavity and the lower cavity 25. The upper and lower ends of the valve cavity are open and connected to two air passage cavities. The double-headed valve consists of a movable valve rod 18 inserted in the valve cavity and two sealing valves at its two ends. The two sealing valves are respectively located in the two air passage cavities and can move up and down with the valve rod 18 to alternately seal the open ends of adjacent valve cavities. The outer shell sidewall of the two air passage cavities is provided with two air inlets that connect to the corresponding air passage cavities. The two air inlets that connect to the same air passage cavity are a set of air inlets. In this embodiment, the two air inlets that connect to the upper cavity 24 are two high-position upper inlets 21, and the two air inlets that connect to the lower cavity 25 are two low-position lower inlets 22. The outer shell sidewall of the valve cavity is provided with an air supply inlet that connects to the valve cavity. In this embodiment, it is an air bag air supply port 23. The spring 20 can be in the upper cavity or the lower cavity, abutting against the corresponding sealing valve to seal the open end of the valve cavity.

[0037] like Figure 3As shown, the cylindrical shell in this embodiment includes a tubular shell 11 with open ends and two end caps, namely an upper end cap 12 and a lower end cap 13. Each end cap is sealed to the two open ends of the tubular shell 11 by a sealing ring 19. The upper end cap 12 is provided with an upper sealing groove 12-1 and fitted with a sealing ring, and the lower end cap 13 is provided with a lower sealing groove 13-1 and fitted with a sealing ring. The inner cavity of the cylindrical shell is the cavity of the tubular shell 11. Four venting ports and one gas supply port are all provided on the side wall of the tubular shell 11. Each of the four venting ports is provided with an integral connecting pipe extending radially outward from the cylindrical shell. The connecting pipe axes of two venting ports in the same group coincide, and the vertical projection of the connecting pipe axes of the two groups of venting ports forms a... Figure 5 The cross in the middle.

[0038] To better position the spring and guide its extension and retraction, positioning structures are provided on both the sealing valve and the end cap against which the spring 20 rests. The positioning structure on the sealing valve is a short post extending from the sealing cap onto which the sealing valve is located, surrounding one end of the spring. Figure 3 As shown, in this embodiment, a short post 16-1 is provided on the lower sealing cover 16, and the positioning structure on the end cover is to provide a cavity on its inner side to accommodate one end of the spring. In this embodiment, a surrounding wall is provided on the inner side of the lower end cover 13 to form a cavity. The position of the spring can be interchanged between the upper and lower air passage cavities.

[0039] like Figure 3 As shown, each of the two sealing valves includes a fitting sealing cap and a sealing gasket, with the sealing gasket facing the open end of the valve cavity. The sealing valves at both ends of the valve stem 18 are fixedly connected to the valve stem 18 via sealing caps. In the figure, the sealing valve at the upper end of the valve stem includes an upper sealing cap 14 and an upper sealing gasket 15, while the sealing valve at the lower end of the valve stem includes a lower sealing cap 16 and a lower sealing gasket 17. To simplify the process, the upper sealing cap 14 and the valve stem 18 are integrally formed, and the lower end of the valve stem 18 is inserted and fixed to the lower sealing cap 16.

[0040] The valve cavity has a double-layer structure consisting of an inner cavity 26 and an outer cavity 27 surrounding it. Both ends of the inner cavity 26 and the outer cavity 27 are open. An integral connecting section is provided between the wall of the outer cavity 27 and the wall of the inner cavity 26. The valve stem 18 is movably inserted in the inner cavity 26. The open end of the valve cavity is the open end of the outer cavity 27. The gas supply interface is connected to the outer cavity 27. The two open ends of the outer cavity 27 each extend into the gas passage cavity on the same side. At the same time, the ends of the two open ends of the outer cavity 27 form thin walls that match the corresponding sealing valves. The side of the thin wall that contacts the sealing valve is a plane, and when sealed, the plane is in close contact with the corresponding sealing gasket.

[0041] like Figure 1As shown, the airbag positioning layer 4 and the airbag fixing layer 6 stacked on top of each other form the airbag mounting layer. The airbag positioning layer 4 has through holes 4-1 that match the shape and position of each airbag 5-1. The node control valve 10 is embedded in an independent base 28. The base 28 corresponding to each node control valve 10 is placed in several mounting holes 6-1 in the airbag fixing layer 6. The airbag 5-1 matching the node control valve 10 is positioned on the corresponding base 28. The longitudinal air path and the transverse air path are laid on the airbag fixing layer 6 and pass through the base 28 through which they are laid. The air path can pass through the air delivery pipe.

[0042] The control logic table for the node control valve is as follows: Figure 9 As shown. To clearly illustrate the internal air passage structure of the node control valve, Figures 10-13 All four vents are drawn on a single cross-section, but in reality, the four vents should be drawn as follows: Figure 5 As shown, they are arranged in a cross shape, with the axes of the two sets of vents perpendicular to each other.

[0043] In state number 1, neither of the two upper ports 21 and the two lower ports 22 connected to the longitudinal and transverse air circuits are ventilated, and the internal structure of the node control valve is as follows: Figure 10 As shown, at this time, the spring pushes the sealing valve at the lower end of the valve stem to seal the open end of the valve cavity on one side. Although the air passage at the upper end of the valve cavity is connected to the valve cavity, there is no air in the air bag inlet because neither air passage is vented, and the node control valve is in the "closed" state.

[0044] In state number 2, both upper ports 21 are ventilated, while both lower ports 22 are not ventilated. The internal structure of the node control valve is as follows: Figure 11 As shown, air pressure acts on the sealing valve at the upper end of the valve stem, causing the sealing valve to move downward against the spring force, sealing the open end of the valve cavity on this side. The valve cavity can only communicate with the air passage cavity with the spring at the lower end, and like the air passage cavity, it is not vented. The air bladder inlet is empty, and the node control valve is in the "closed" state.

[0045] In state number 3, both upper ports 21 are airless, while both lower ports 22 are ventilated. The internal structure of the node control valve is as follows: Figure 12 As shown, the air pressure in the air passage cavity, combined with the spring force, pushes the sealing valve at the lower end of the valve stem upward to seal the open end of the valve cavity. Although the air passage cavity at the upper end of the valve cavity is connected to the valve cavity, because the air passage cavity is not ventilated, there is no air in the airbag inlet, and the node control valve is in the "closed" state.

[0046] In state number 4, both upper ports 21 and both lower ports 22 are vented, and the internal structure of the node control valve is as follows: Figure 13As shown, the two sealing valves at both ends of the valve stem are counteracted by the air pressure. The spring pushes the sealing valve at the lower end of the valve stem upward to seal the open end of the valve cavity. The air passage at the upper end of the valve cavity is connected to the valve cavity. Because the air passage is open at this time, the air bag inlet is filled with air, and the node control valve is in the "open" state.

[0047] The control box 9 can sense the body's position and pressure on the mattress through the detection data acquired by the pressure pad 2, and control the opening and closing of the solenoid valves configured in each air path. This allows the corresponding airbags 5-1 to provide precise massage to different areas of the body, achieving intelligent control of the mattress massage. The intelligent control process is as follows: Figure 15 The steps are shown in sequence:

[0048] 1. Start the function, start the control box, and open the pressure pad for testing;

[0049] 2. The pressure pad detects sleeping posture and outputs the position of the applied dot matrix to the control box. The pressure pad determines the sleeping posture of a person lying on the mattress based on the detection data.

[0050] 3. Select the action mode to be performed according to the sleeping position. The control box automatically or manually selects the massage action mode to be performed based on the sleeping position information sent by the pressure pad, such as patting, squeezing, wave rhythm, etc.

[0051] 4. Depending on the location, open the air circuit of the horizontal and vertical point solenoid valves, start the air pump, and inflate and deflate the airbags mapped to the points;

[0052] 5. Update sleeping posture and position, continuously obtain and update pressure detection data through the pressure pad; if there is an update, return to step 2, otherwise proceed to step 6;

[0053] 6. Perform techniques such as patting, squeezing, and wave-like movements according to the action pattern. After the set action pattern ends, return to step 5.

[0054] This invention utilizes a combination of node control valves connecting each massage airbag and a network of longitudinally and transversely arranged air paths to form a dot-matrix-based air path control structure that controls the ventilation of each airbag. This simplifies the air path control structure, reduces its volume, and lowers costs. The number of air paths and solenoid valves is limited; the number of air paths is simply the sum of the numbers in the longitudinal and transverse directions. Air paths can be shared by node control valves along their path, and the number of solenoid valves corresponds to the number of air paths, significantly reducing the overall number of airbags. Taking an N*M array of airbags as an example, the number of air paths and solenoid valves is N+M. There is no need to configure independent air paths and solenoid valves for each airbag; only N*M node control valves are needed to control the ventilation of each airbag. The simplified air path structure means that even with a larger array of airbags, the increased number of air paths and solenoid valves is limited, eliminating concerns about the complexity of the air path structure limiting the number of airbags. By adding more independently controllable airbags, full-body massage and precise airbag point massage can be achieved. During operation, each node control valve, which is matched with each grid node, is connected to an airbag. The node control valve will only open when both the longitudinal and transverse air paths are open, and will use one of the longitudinal and transverse air paths to supply air to the airbag. When neither longitudinal nor transverse air path is supplied with air or only one of them is supplied with air, the node control valve will close. The air passage of each longitudinal air path and transverse air path can be independently controlled by the solenoid valve matched with that air path. The control box only needs to control the opening and closing of each solenoid valve.

Claims

1. A mattress with an airbag system based on dot-matrix air path control, comprising a control box (9), an airbag mounting layer, and multiple airbags (5-1) arranged in the same plane thereon, each airbag (5-1) forming an airbag layer (5) for massage operation, a support layer (7) below the airbag mounting layer, a comfort layer (3) above the airbag layer (5), and an air path controlled by the control box (9) connecting the airbag layer (5) and the control box (9), characterized in that... Each airbag (5-1) is connected to the air path through an openable / closeable node control valve (10). The air path consists of multiple longitudinal air paths and multiple transverse air paths. Each transverse and longitudinal air path is controlled by an independent solenoid valve. Each solenoid valve is connected to the control box (9). The air paths in the longitudinal and transverse directions are projected vertically into a grid shape. Each intersection node of the grid corresponds to each node control valve (10). The node control valve (10) is connected to the transverse and longitudinal air paths where the corresponding node is located. The node control valve (10) opens when the connected transverse and longitudinal air paths are supplied with air at the same time, and supplies air to the airbag (5-1) that is matched with the node control valve (10) of one of the two air paths. The node control valve (10) closes when the connected two air paths are cut off at the same time or when one of them is supplied with air.

2. The mattress with an airbag system based on dot matrix airflow control according to claim 1, characterized in that: The node control valve (10) has four air inlets and one air delivery inlet. The four air inlets are connected in pairs. The node control valve (10) is connected in series with the matching transverse air path and longitudinal air path through the two sets of air inlets respectively. The air delivery inlet is connected to the air bag (5-1).

3. The mattress with an airbag system based on dot-matrix airflow control according to claim 2, characterized in that... The node control valve (10) includes a cylindrical shell closed at both ends and a double-headed valve and a spring (20) disposed therein. The inner cavity of the cylindrical shell consists of two upper and lower air passage cavities that are aligned and connected by their axes and a valve cavity in the middle. The upper and lower ends of the valve cavity are open and connected to the two air passage cavities. The double-headed valve consists of a movable valve rod (18) inserted in the valve cavity and two sealing valves at its two ends. The two sealing valves are disposed in the two air passage cavities and can move up and down with the valve rod (18) to alternately seal the open ends of adjacent valve cavities. The side wall of the cylindrical shell outside the two air passage cavities is provided with two air inlets that connect to the corresponding air passage cavities. The two air inlets that connect to the same air passage cavity are a set of air inlets. The side wall of the cylindrical shell outside the valve cavity is provided with an air supply inlet that connects to the valve cavity. The spring (20) is disposed in one of the upper and lower air passage cavities and abuts against the corresponding sealing valve to seal the open end of the valve cavity.

4. The mattress with an airbag system based on dot-matrix airflow control according to claim 3, characterized in that: The cylindrical shell includes a tubular shell (11) with open ends and two end caps. Each end cap is sealed to the two open ends of the tubular shell (11) by a sealing ring (19). The inner cavity of the cylindrical shell is the cavity of the tubular shell (11). The ventilation port and the gas supply port are both located on the side wall of the tubular shell (11).

5. The airbag system mattress based on dot matrix air path control according to claim 3, characterized in that... Each of the four venting ports is equipped with a connecting pipe extending radially outward from the shell. The connecting pipe axes of two venting ports in the same group coincide, and the vertical projection of the connecting pipe axes of the two groups of venting ports forms a cross.

6. The airbag system mattress based on dot matrix air path control according to claim 3, characterized in that: The sealing valve includes a sealing cap and a sealing gasket that fit together, with the sealing gasket facing the open end of the valve cavity. The sealing valves at both ends of the valve stem (18) are fixedly connected by the sealing cap and the valve stem (18).

7. The airbag system mattress based on dot matrix air path control according to claim 3, characterized in that... The valve cavity is a double-layer structure consisting of an inner cavity (26) and an outer cavity (27) surrounding it. Both ends of the inner cavity (26) and the outer cavity (27) are open. An integral connecting section is provided between the wall of the outer cavity (27) and the wall of the inner cavity (26). The valve stem (18) passes through the inner cavity (26). The open end of the valve cavity is the open end of the outer cavity (27). The gas supply interface is connected to the outer cavity (27).

8. The airbag system mattress based on dot matrix air path control according to claim 7, characterized in that... The open end of the outer cavity (27) extends into the gas passage cavity on the same side, and the end of the open end of the outer cavity (27) forms a thin wall that matches the sealing valve, and the side of the thin wall that contacts the sealing valve is a plane.

9. The mattress with an airbag system based on dot matrix air path control according to claim 1, characterized in that... The airbag mounting layer includes an airbag positioning layer (4) and an airbag fixing layer (6) stacked on top of each other. The airbag positioning layer (4) has through holes (4-1) that match the shape and position of each airbag (5-1). The node control valve (10) is embedded in an independent base (28). The base (28) corresponding to each node control valve (10) is placed in several mounting holes (6-1) in the airbag fixing layer (6). The airbag (5-1) matching the node control valve (10) is positioned on the corresponding base (28). The longitudinal air path and the transverse air path are laid on the airbag fixing layer (6) and pass through the base (28) through which they are laid.

10. The airbag system mattress based on dot matrix air path control according to any one of claims 1 to 9, characterized in that... The comfort layer (3) is provided with a pressure pad (2) connected to the control box (9). The control box (9) can sense the position of the body on the mattress and control the opening and closing of the pressure solenoid valve through the detection data of the pressure pad (2) so as to use the corresponding airbag (5-1) for massage.

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