Air bag soft package control system based on multiple sensors and furniture seat with same

Abstract

The invention discloses an air bag soft package control system based on multiple sensors and a furniture seat with the system in the technical field of intelligent furniture, and the system comprises a soft package assembly which comprises a plurality of air bag units distributed in a dot matrix shape; the sensors are fixedly arranged at the bottoms of the air bag units in a one-to-one correspondence mode and used for collecting human body pressure data acting on the air bag units; the inflation and deflation assembly comprises a plurality of inflation and deflation units arranged at the bottoms of the air bag units in a one-to-one correspondence mode, and the inflation and deflation units are used for executing inflation or deflation operation on the corresponding air bag units; the control unit is in communication connection with the sensor and the inflation and deflation assembly. According to the system, the dot-matrix air bag units are adopted in the soft package assembly, a plurality of dot-matrix cavities are further formed in each air bag unit, local supporting can be achieved according to the actual contact area of the human body, the supporting precision is high, the fitting performance is good, and the riding comfort is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of smart furniture technology, specifically to a multi-sensor-based airbag soft-pack control system and a furniture chair incorporating this system. Background Technology

[0002] As people's demand for seating comfort increases, intelligent airbag seats have become a development direction for high-end furniture. The existing soft-pack structure of long bench seats is mostly a one-piece soft pack or a large airbag design, which makes it difficult to achieve precise local support adjustment. To solve this problem, the industry is gradually adopting a dot-matrix distribution of independent airbag units, combined with pressure sensors and solenoid valve groups. Through an electronic control system, the inflation and deflation of each airbag unit is adjusted in order to achieve adaptive and conformal support to the human body contour.

[0003] However, existing dot matrix airbag units generally employ a single-cavity structure, with airflow control primarily relying on electronically controlled components such as solenoid valves. Control strategies are mostly based on overall inflation / deflation or coarse zonal adjustment. On one hand, the support resolution is insufficient; a single-cavity airbag can only achieve overall stiffness changes, failing to create a stiffness gradient within the unit that matches the local contact pattern with the human body. On the other hand, surface continuity is poor; during support adjustment, adjacent airbag units are prone to slight height jumps due to pressure differences, resulting in a noticeable hard boundary.

[0004] If the size of the airbag unit is reduced to improve the support resolution, a solenoid valve needs to be configured for each micro airbag unit. This will result in complicated air circuits and difficult system integration, which will not only significantly increase manufacturing costs but also increase the equipment failure rate and make subsequent maintenance more difficult.

[0005] To address these issues, a multi-sensor-based airbag soft-pack control system and furniture seating incorporating this system are provided. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-sensor-based airbag soft pad control system and furniture seats with this system, which solves the problems of existing seat dot matrix airbag soft pads being unable to adapt to the actual contact position of the human body, having insufficient precise support performance, and having obvious hard boundary feel during support adjustment.

[0007] The present invention achieves the above objectives through the following technical solutions: The multi-sensor-based airbag soft pack control system includes: The soft-pack assembly includes multiple airbag units distributed in a dot matrix pattern; Multiple sensors are fixedly installed at the bottom of each airbag unit to collect human pressure data acting on the airbag unit. An inflation / deflation assembly includes a plurality of inflation / deflation units disposed one-to-one at the bottom of each of the airbag units, the inflation / deflation units being used to perform inflation or deflation operations on the corresponding airbag units. The control unit is communicatively connected to the sensor and the inflation / deflation assembly, and is used to selectively control the operation of the inflation / deflation unit in the corresponding area based on the pressure data collected by the sensor. Each airbag unit has multiple chambers arranged in a dot matrix pattern inside; the inflation / deflation unit includes an inflation line, a deflation line, an inflation solenoid valve on the inflation line, a deflation solenoid valve on the deflation line, and multiple switching components corresponding to the chambers; the switching components are used to automatically open and close the air passage of the corresponding chamber under the pressure of the human body, so as to realize the inflation or deflation of the corresponding chamber.

[0008] As a further optimization of the present invention, the airbag unit includes a base airbag and a buffer airbag fixedly disposed on the top of the base airbag; the sensor is disposed at the bottom of the base airbag, and the chamber is formed inside the buffer airbag.

[0009] As a further optimization of the present invention, the switching component includes an outer cylinder fixedly disposed within the base bladder, and an inner cylinder slidably disposed within the outer cylinder along the axial direction; the upper and lower ends of the inner wall of the outer cylinder are respectively provided with an inflation hole and a deflation hole, and the corresponding positions of the outer wall are respectively connected to an inflation branch pipe and a deflation branch pipe; the upper end of the inner cylinder extends to the inner top surface of the chamber and is fixedly connected thereto, and the upper and lower ends of the inner cylinder are respectively provided with a second air supply hole and a first air supply hole; the inner cylinder moves along the axial direction of the outer cylinder so that the first air supply hole is selectively aligned and connected with the inflation hole or the deflation hole, thereby realizing the switching between inflation, pressure holding and deflation states.

[0010] As a further optimization of the present invention, the inflation branch pipes of each of the switching components are all connected to the same inflation pipeline, and the deflation pipelines of each of the switching components are all connected to the same deflation pipeline.

[0011] As a further optimization of the present invention, the inflation / deflation assembly further includes an inflation pump and an inflation manifold; the inflation lines of each inflation / deflation unit are all connected to the inflation manifold, the inflation manifold is connected to the inflation pump, and the deflation lines of each inflation / deflation unit are all vented to the atmosphere.

[0012] As a further optimization of the present invention, the switching component further includes a spring sleeved on the outer periphery of the inner cylinder; one end of the spring is fixedly connected to the end of the outer cylinder, and the other end is fixedly connected to a ring on the inner cylinder.

[0013] As a further optimization of the present invention, the soft-pack assembly further includes a soft-pack fabric; the soft-pack fabric is used to cover the outer surface of all airbag units to form a continuous contact interface.

[0014] The present invention also provides a furniture seat, including a seat body, a support plate, and the aforementioned multi-sensor-based airbag soft padding control system. The seat body has a soft padding assembly of the control system on both the seat surface and the backrest. The support plate is fixedly mounted on the seat body for mounting the soft padding assembly of the control system. The support plate includes a plurality of plate units distributed along the length direction of the seat body, and the plate units are used to support a row of airbag units arranged along the width direction of the seat body.

[0015] As a further optimization of the present invention, the top of the plate unit is provided with multiple integrally formed limiting support plates and multiple positioning grooves, and both ends of the plate unit are provided with integrally formed mounting support plates; the side of the base bladder is provided with a limiting groove corresponding to the position of the limiting support plate, and the sensor is embedded in the positioning groove.

[0016] The beneficial effects of this invention are as follows: 1. The soft-pack assembly of the present invention adopts a dot-matrix airbag unit. Each airbag unit is further provided with multiple dot-matrix chambers, which can provide local support according to the actual contact area of ​​the human body. The support accuracy is high and the fit is good, which effectively improves the riding comfort.

[0017] 2. This invention uses an outer cylinder and an inner cylinder to form a switching component. It uses human body pressure to drive the displacement of the inner cylinder, thereby realizing the automatic opening and closing of the inflation path. It only inflates the pressurized chambers and keeps the unpressurized chambers closed. It has a simple structure, high reliability, and low cost, and avoids the complex arrangement of internal solenoid valves.

[0018] 3. The inflation lines of each airbag unit in this invention are converged in the main inflation line, resulting in a simple air path layout, reduced number of lines, high assembly efficiency, and convenient maintenance. It is suitable for the arrangement of long, multi-person seats. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the soft-pack assembly and seat body assembly of the present invention; Figure 2 This is a schematic diagram of the overall structure of the soft-pack assembly of the present invention; Figure 3 This is a schematic diagram of the airbag unit structure of the present invention; Figure 4 This is a schematic diagram of the inflation / deflation unit structure of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the inflation / deflation unit structure of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the switching component structure of the inflation / deflation unit of the present invention; Figure 7 This is a schematic diagram of the overall structure of the support plate of the present invention; Figure 8 This is a schematic diagram of the plate unit structure of the support plate of the present invention.

[0020] In the picture: 1. Airbag Unit; 101. Basic Airbag Body; 102. Buffer Airbag Body; 103. Chamber; 104. Limiting Groove; 2. Sensor; 3. Inflation / Deflation Unit; 301. Inflation Pipeline; 302. Deflation Pipeline; 303. Inflation Solenoid Valve; 304. Deflation Solenoid Valve; 305. Switching Component; 306. Outer Cylinder; 307. Inner Cylinder; 308. Inflation Hole; 309. Deflation Hole; 310. Inflation Branch Pipe; 311. Deflation Branch Pipe; 312. Ring Body; 313. Spring; 314. First Air Inlet; 315. Second Air Inlet; 4. Seat Body; 5. Support Plate; 501. Plate Unit; 502. Limiting Support Plate; 503. Positioning Groove; 504. Mounting Support Plate; 6. Soft Covering Fabric. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1 To address the issues of existing seat padded airbags failing to adapt to the actual contact points with the human body, resulting in insufficient precise support and a noticeable hard edge during adjustment, please refer to [link to relevant documentation]. Figures 1-4 The multi-sensor-based airbag soft pack control system provided by the present invention includes: The soft-pack assembly includes multiple airbag units 1 arranged in a dot matrix pattern; Multiple sensors 2 are fixedly installed at the bottom of each airbag unit 1 in a corresponding manner to collect human pressure data acting on the airbag unit 1. The inflation / deflation assembly includes multiple inflation / deflation units 3 that are correspondingly disposed at the bottom of each airbag unit 1. The inflation / deflation unit 3 is used to perform inflation or deflation operations on the corresponding airbag unit 1. The control unit is connected to the sensor 2 and the inflation / deflation assembly, and is used to selectively control the operation of the inflation / deflation unit 3 in the corresponding area based on the pressure data collected by the sensor 2.

[0023] Each airbag unit 1 has multiple chambers 103 arranged in a dot matrix pattern inside; the inflation / deflation unit 3 includes an inflation line 301, a deflation line 302, an inflation solenoid valve 303 on the inflation line 301, a deflation solenoid valve 304 on the deflation line 302, and multiple switching components 305 corresponding to each chamber 103; the switching components 305 are used to automatically open and close the air passage of the corresponding chamber 103 under the action of human body pressure, so as to realize the inflation or deflation of the corresponding chamber 103.

[0024] The specific control process is as follows: In the initial state, all airbag units 1 are in a basic inflation state, maintaining their basic shape, keeping the soft bag flat and not collapsing. Sensor 2 detects no pressure signal. When a person sits in a certain area, sensor 2 detects a pressure change and transmits the signal to the control unit. The control unit determines the area that needs to be inflated based on the pressure signal and controls the corresponding inflation / deflation unit 3 to start. Specifically, the inflation solenoid valve 303 in the corresponding inflation / deflation unit 3 is turned on, allowing gas to enter through the inflation pipeline 301. During this process, the switching component 305, which corresponds one-to-one with the pressurized chamber 103, responds to the local pressure change and automatically opens the air passage of the chamber 103, thereby achieving precise inflation of the corresponding chamber 103. Based on the dot matrix airbag unit 1 and the internal multi-chamber 103 structure, the soft bag assembly forms an adaptive support surface that adapts to the contact shape of the human body. When the human body leaves, sensor 2 detects the disappearance of pressure, and the control unit controls the deflation solenoid valve 304 to turn on, allowing gas to be discharged through the deflation pipeline 302, and the airbag unit 1 returns to its initial state.

[0025] Furthermore, such as Figure 3 As shown, the airbag unit 1 includes a base airbag 101 and a buffer airbag 102 fixedly disposed on the top of the base airbag 101; the sensor 2 is disposed at the bottom of the base airbag 101, and the chamber 103 is formed inside the buffer airbag 102. The base airbag 101 can be a normal pressure static airbag to provide basic cushioning.

[0026] In addition, the inflation / deflation assembly also includes an inflation pump and an inflation manifold; the inflation lines 301 of each inflation / deflation unit 3 are all connected to the inflation manifold, the inflation manifold is connected to the inflation pump, and the deflation lines 302 of each inflation / deflation unit 3 are all vented to the atmosphere.

[0027] In actual use, the inflation pump provides a stable air source to each inflation / deflation unit 3 through the inflation manifold. When a specific chamber 103 needs to be reinforced, the control unit opens the inflation solenoid valve 303 in the inflation / deflation unit 3. The gas enters the switching element 305 through the inflation manifold and inflation line 301. The switching element 305 automatically guides the gas to the pressurized chamber 103 to complete the inflation. When the person leaves the seat, the control unit opens the deflation solenoid valve 304. The gas in the chamber 103 flows into the deflation line 302 through the switching element 305 and is discharged to the atmosphere.

[0028] In addition, such as Figure 1 As shown, the soft-pack assembly also includes a soft-pack fabric 6; the soft-pack fabric 6 is used to cover the outer surface of all airbag units 1 to form a continuous contact interface. The soft-pack fabric 6 covers the entire surface of the airbag unit 1 array, and visually remains a single soft pad. The soft-pack fabric 6 is made of a highly elastic flexible material, which can extend or retract when the lower airbag unit 1 undergoes local inflation and deflation deformation.

[0029] Example 2 Based on Example 1, in order to automatically open and close the air passage of the corresponding chamber 103 under human body pressure, selective inflation is achieved only in the pressurized chamber 103, while the unpressurized chamber 103 remains closed, thereby achieving precise local support and eliminating the feeling of hard boundaries, such as... Figure 6 As shown, the switching component 305 includes an outer cylinder 306 fixedly disposed within the base bladder 101, and an inner cylinder 307 slidably disposed within the outer cylinder 306 along the axial direction.

[0030] The inner wall of the outer cylinder 306 has an inflation hole 308 and an vent hole 309 at its upper and lower ends, respectively. Corresponding positions on its outer wall are connected to an inflation branch pipe 310 and a vent branch pipe 311. The inflation branch pipe 310 of each switching component 305 is connected to the same inflation pipe 301, and the vent pipe 302 of each switching component 305 is connected to the same vent pipe 302. The upper end of the inner cylinder 307 extends to and is fixedly connected to the inner top surface of the chamber 103. A corrugated telescopic sealing sleeve is provided between the inner cylinder 307 and the inner bottom surface of the chamber 103 to maintain airtightness when the inner cylinder 307 slides axially. The upper and lower ends of the inner cylinder 307 are respectively provided with a second air inlet 315 and a first air inlet 314. The inner cylinder 307 moves axially along the outer cylinder 306 so that the first air inlet 314 can be selectively aligned and connected with the inflation port 308 or the deflation port 309 to realize the switching of inflation, pressure holding and deflation states.

[0031] The switching component 305 also includes a spring 313 sleeved on the outer periphery of the inner cylinder 307; one end of the spring 313 is fixedly connected to the end of the outer cylinder 306, and the other end is fixedly connected to the ring 312 on the inner cylinder 307.

[0032] When the switching component 305 is in use, with the airbag unit 1 in its initial state, the inner cylinder 307 is positioned between the inflation port 308 and the deflation port 309 under the action of the spring 313. The first air inlet 314 is offset from both the inflation port 308 and the deflation port 309, and each chamber 103 is in a pressure-holding state. When a person sits on a certain area of ​​the soft-pack assembly, the pressure of the person acts on the cushioning bladder 102, causing the chamber 103 in the pressure area to... The downward displacement causes the corresponding inner cylinder 307 to slide downwards along the outer cylinder 306, aligning the first air inlet 314 with the inflation port 308. Airflow then enters the chamber 103 via the inflation main pipe, inflation line 301, inflation branch pipe 310, inflation port 308, first air inlet 314, and second air inlet 315, inflating the pressurized chamber 103. As inflation proceeds, the chamber 103 expands and rises, causing the inner cylinder 307 to move upwards, gradually displacing the first air inlet 314 from the inflation port 308. The inflation volume is automatically limited, ultimately achieving an inflation-pressure balance, providing stable support for the human body. In the unpressurized area, the chamber 103 remains closed due to the inner cylinder 307 not moving downwards, thus not participating in inflation and achieving precise local support. When the human body leaves, the chamber 103 rebounds under its own elasticity and the action of the spring 313, causing the inner cylinder 307 to move upwards, aligning the first air inlet 314 with the inflation port 308. The air inlet 314 and the air outlet 309 are aligned and connected. The gas in the chamber 103 is discharged into the atmosphere through the second air inlet 315, the first air inlet 314, the air outlet 309, the air outlet branch pipe 311, and the air outlet pipeline 302. As the air is discharged, the height of the chamber 103 decreases and the inner cylinder 307 moves down, so that the first air inlet 314 and the air outlet 309 are misaligned. When the air is discharged, each chamber 103 returns to its initial state, and the soft package assembly returns to a flat state.

[0033] Example 3 Based on Embodiment 1 and Embodiment 2, as follows Figure 1 , Figures 7-8 As shown, the present invention also provides a furniture chair, including a chair body 4, a support plate 5, and the aforementioned control system.

[0034] The seat body 4 has a soft padding assembly for the control system on both the seat surface and the backrest. The support plate 5 is fixed on the seat body 4 and is used to install the soft padding assembly for the control system. The support plate 5 includes multiple plate units 501 distributed along the length of the seat body 4. The plate units 501 are used to support a row of airbag units 1 arranged along the width of the seat body 4.

[0035] The top of the plate unit 501 is provided with multiple integrally formed limiting support plates 502 and multiple positioning grooves 503. Both ends of the plate unit 501 are provided with integrally formed mounting support plates 504. The side of the base bladder 101 is provided with limiting grooves 104 corresponding to the positions of the limiting support plates 502. The sensor 2 is embedded in the positioning groove 503 to achieve precise positioning and prevent displacement.

[0036] During assembly and use, the support plate 5 is fixed to the seat body 4 by the mounting plates 504 at both ends. Each plate unit 501 is arranged sequentially along the length of the seat body 4. The limiting plate 502 on the plate unit 501 cooperates with the limiting groove 104 of the base bladder 101 to realize the positioning and limiting of the airbag unit 1. The positioning groove 503 positions and installs the sensor 2, so that the soft pack assembly is stably set on the seat surface and back of the seat body 4, ensuring that the airbag unit 1 and the sensor 2 are reliably installed and accurately positioned.

[0037] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A multi-sensor-based airbag soft pack control system, characterized in that, include: The soft-pack assembly includes multiple airbag units (1) arranged in a dot matrix pattern. Multiple sensors (2) are fixedly installed at the bottom of each airbag unit (1) in a corresponding manner to collect human pressure data acting on the airbag unit (1); An inflation / deflation assembly includes a plurality of inflation / deflation units (3) that are disposed one-to-one at the bottom of each airbag unit (1). The inflation / deflation unit (3) is used to perform inflation or deflation operations on the corresponding airbag unit (1). The control unit is communicatively connected to the sensor (2) and the inflation / deflation assembly, and is used to selectively control the operation of the inflation / deflation unit (3) in the corresponding area based on the pressure data collected by the sensor (2); Each of the airbag units (1) has multiple chambers (103) arranged in a dot matrix pattern inside. The inflation / deflation unit (3) includes an inflation pipeline (301), a deflation pipeline (302), an inflation solenoid valve (303) provided on the inflation pipeline (301), a deflation solenoid valve (304) provided on the deflation pipeline (302), and a plurality of switching components (305) corresponding one-to-one with the chamber (103). The switching component (305) is used to automatically open and close the air passage of the corresponding chamber (103) under human body pressure, so as to realize the inflation or deflation of the corresponding chamber (103).

2. The multi-sensor-based airbag soft pack control system according to claim 1, characterized in that, The airbag unit (1) includes a base bag (101) and a buffer bag (102) fixedly disposed on the top of the base bag (101). The sensor (2) is located at the bottom of the base capsule (101), and the chamber (103) is formed inside the buffer capsule (102).

3. The multi-sensor-based airbag soft pack control system according to claim 1, characterized in that, The switching component (305) includes an outer cylinder (306) fixedly disposed within the base bladder (101) and an inner cylinder (307) slidably disposed within the outer cylinder (306) along the axial direction. The inner wall of the outer cylinder (306) is provided with an air inlet (308) and an air outlet (309) at the upper and lower ends respectively, and the corresponding positions on its outer wall are respectively connected to an air inlet branch pipe (310) and an air outlet branch pipe (311). The upper end of the inner cylinder (307) extends to the inner top surface of the chamber (103) and is fixedly connected thereto. The upper and lower ends of the inner cylinder (307) are respectively provided with a second air inlet (315) and a first air inlet (314). The inner cylinder (307) moves axially along the outer cylinder (306) so that the first air inlet (314) is selectively aligned and connected with the air inlet (308) or the air outlet (309) to achieve switching between air inlet, pressure holding and air outlet states.

4. The multi-sensor-based airbag soft pack control system according to claim 3, characterized in that, The inflation branch pipe (310) of each of the switching components (305) is connected to the same inflation pipeline (301), and the deflation pipeline (302) of each of the switching components (305) is connected to the same deflation pipeline (302).

5. The multi-sensor-based airbag soft pack control system according to claim 1, characterized in that, The inflation / deflation assembly also includes an inflation pump and an inflation manifold; The inflation lines (301) of each inflation / deflation unit (3) are all connected to the inflation manifold, which is connected to the inflation pump. The deflation lines (302) of each inflation / deflation unit (3) are all vented to the atmosphere.

6. The multi-sensor-based airbag soft pack control system according to claim 3, characterized in that, The switching component (305) also includes a spring (313) sleeved on the outer periphery of the inner cylinder (307); One end of the spring (313) is fixedly connected to the end of the outer cylinder (306), and the other end is fixedly connected to the ring (312) on the inner cylinder (307).

7. The multi-sensor-based airbag soft pack control system according to claim 1, characterized in that, The soft-pack assembly also includes soft-pack fabric (6). The soft-pack fabric (6) is used to cover the outer surface of all airbag units (1) to form a continuous contact interface.

8. A furniture chair, comprising a chair body (4), a support plate (5), and a multi-sensor-based airbag soft-pack control system as described in any one of claims 1-7, characterized in that: The seat body (4) is provided with the soft-pack assembly of the control system on both the seat surface and the backrest. The support plate (5) is fixedly installed on the seat body (4) for installing the soft-pack assembly of the control system. The support plate (5) includes a plurality of plate units (501) distributed along the length direction of the seat body (4), and the plate units (501) are used to carry a row of airbag units (1) arranged along the width direction of the seat body (4).

9. A furniture chair according to claim 8, characterized in that, The top of the plate unit (501) is provided with multiple integrally formed limiting support plates (502) and multiple positioning grooves (503). Both ends of the plate unit (501) are provided with integrally formed mounting support plates (504). A limiting groove (104) is provided on the side of the basic capsule (101) at the position corresponding to the limiting support plate (502), and the sensor (2) is embedded in the positioning groove (503).

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