A softness and hardness adjusting device with body pressure detection function and vehicle seat

Abstract

The application provides a softness and hardness adjusting device (100) with body pressure detection function, which is installed on a seating area (210) of a vehicle seat (200). The softness and hardness adjusting device (100) with body pressure detection function comprises an adjusting air bag (110), an air pressure detection member (120), an air source (130) and a control device (140). The adjusting air bag (110) is provided with a containing cavity (111) for carrying a passenger on the seating area (210). A flexible resilient object (160) and an initial amount of gas are arranged in the containing cavity (111). The flexible resilient object (160) is used for supporting the inner wall of the containing cavity (111) to contain the gas, and the initial amount of gas is used for passenger body pressure detection. The detection end of the air pressure detection member (120) is used for detecting the air pressure in the containing cavity (111). The gas supply port of the air source (130) is connected with the containing cavity (111) through a connecting pipeline, and is used for adjusting the total gas amount in the containing cavity (111) to adjust the softness and hardness of the seating area (210). The control device (140) determines the body pressure level of the passenger according to the detected air pressure in the containing cavity (111).

Description

Technical Field

[0001] This application relates to the field of vehicle seat technology, specifically to a softness / hardness adjustment device with body pressure detection function and a vehicle seat. Background Technology

[0002] With the promotion and application of automobiles, cars have become one of the daily means of transportation for people. As people become more dependent on cars, they have higher requirements for automotive technology, especially for car seats. People sit on car seats for long periods of time, which can easily cause muscle tension and fatigue.

[0003] Given the different body types and habits of passengers, ordinary car seats can no longer meet their diverse needs. Therefore, seats with higher comfort levels are becoming an increasingly important requirement. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a softness and hardness adjustment device with body pressure detection function and a vehicle seat to solve the above problems.

[0005] A first aspect of the present invention provides a stiffness adjustment device with body pressure detection function, the stiffness adjustment device with body pressure detection function being installed in the seating area of ​​a vehicle seat, the stiffness adjustment device with body pressure detection function comprising: An adjustable airbag is provided with a receiving cavity for carrying occupants in the seating area. The receiving cavity (111) contains a flexible rebound material and an initial amount of gas. The flexible rebound material (160) is used to support the inner wall of the receiving cavity (111) to contain the gas. The initial amount of gas is used for occupant body pressure detection. A pressure detection device, wherein the detection end of the pressure detection device is used to detect the pressure inside the accommodating cavity; An air source, the air supply port of which is connected to the receiving cavity via a connecting pipe, is used to adjust the total air volume in the receiving cavity to adjust the firmness of the seating area.

[0006] A control device that determines the occupant's body pressure level based on the detected air pressure within the containment cavity.

[0007] The body pressure detection and firmness adjustment device of the present invention can detect the body pressure of the occupant and adjust the firmness of the seating area of ​​the seat. It integrates the occupant detection and grading function and the firmness adjustment function of the seat into one, which can save the limited space in the seat and solve the problem that the traditional occupant grading and firmness adjustment cannot be arranged at the same time.

[0008] The seat firmness adjustment device with body pressure detection function provided by this invention can also adjust the seat firmness according to the occupant's level, improve the comfort of different occupants, meet the diverse needs of occupants, and more importantly, a more comfortable seat can alleviate occupant fatigue and provide a comfortable environment for people during their journey.

[0009] In the body pressure detection and firmness adjustment device provided by this invention, designers can conceive of integrating the occupant's body pressure detection function with the seat's firmness adjustment function to meet the occupant's high comfort requirements and also to meet the occupant's high intelligent requirements for the seat. For example, the occupant can be classified according to the body pressure detection function, and then the firmness can be adjusted to suit the occupant's level. Alternatively, the seat can activate a memory function for occupants who frequently sit in the vehicle, storing the occupant's body pressure detection parameters and the occupant's frequently set firmness parameters, thereby quickly adjusting the seat to a firmness level suitable for the occupant.

[0010] In one embodiment of the stiffness adjustment device with body pressure detection function of the present invention, after the control device determines the body pressure level of the occupant through the air pressure detection element, it initiates the adjustment of the stiffness of the seating area.

[0011] The adjustable airbag is configured to detect the occupant's body pressure. The seat's seating area is also set to have different levels of firmness by adjusting the airbag. Gas is reserved in the containment chamber of the adjustable airbag for detecting the occupant's body pressure. First, the occupant's body pressure is detected, and then the seating area of ​​the seat is adjusted to a firmness suitable for the occupant, so that the occupant can sit more comfortably in a seating area with stable air pressure.

[0012] In one embodiment of the stiffness adjustment device with body pressure detection function of the present invention, the control device controls the air source to supply air to the accommodating cavity according to the body pressure level of the occupant in order to adjust the stiffness of the seating area.

[0013] In one method of controlling seat firmness, the firmness of the seating area can be adjusted according to the occupant's level or their personal habits. Specifically, determining the firmness of the seating area based on the occupant's body pressure detection allows the control device to intelligently control the seat, meeting the occupant's intelligent requirements. It also enables the control device to have a memory function, allowing it to quickly respond to and adjust the seat for frequently used occupants.

[0014] In one embodiment of the stiffness adjustment device with body pressure detection function of the present invention, the stiffness adjustment device with body pressure detection function further includes a control valve, which is disposed on the connecting pipeline between the air supply port of the air source and the accommodating cavity, and the occupant adjusts the total air volume of the accommodating cavity through the control valve.

[0015] When occupants experience different levels of seat firmness, the total air volume in the airbag can be controlled via a control valve to actively adjust the seat's firmness. This control valve can be a function button on the seat that is easily accessible to the occupant, allowing for convenient operation while seated.

[0016] In one embodiment of the body pressure detection function of the present invention, the control device further includes a storage unit, which is used to store the correspondence between the body pressure level of the occupant and the hardness level of the seating area and form stored data. The control device adjusts the hardness of the seating area according to the stored data.

[0017] The system stores the detected occupant's body pressure and the occupant's commonly used firmness level. It also matches the occupant's body pressure with the occupant's commonly used firmness level to form stored data. This allows the control device to retrieve historical data from the stored data in a timely manner and quickly set the seat to a firmness level that matches the occupant, improving the seat's adjustment efficiency and further enhancing the seat's intelligence level.

[0018] In one embodiment of the stiffness adjustment device with body pressure detection function of the present invention, the stiffness adjustment device with body pressure detection function further includes a command input device, through which the occupant inputs an adjustment command to the control device.

[0019] Passengers can operate the control device by inputting commands and adjust the firmness of the seat to a comfortable level. The control device and the passenger work together to adjust the firmness of the seat. Passengers can also improve and supplement the automatic adjustment function of the seat according to their personal habits, making the seat more user-friendly.

[0020] In one embodiment of the soft / hardness adjustment device with body pressure detection function of the present invention, after the vehicle is turned off, the control device adjusts the air pressure in the accommodating cavity to the initial state through the air source.

[0021] By adjusting the gas in the regulating airbag to its initial state, body pressure can be detected for other occupants seated in the seating area. The initial state means that gas is reserved in the accumulator of the regulating airbag for body pressure detection of occupants, and the gas pressure is adjusted to a preset value, such as standard atmospheric pressure. In different regulating systems, the preset value can also be set to other values.

[0022] In one embodiment of the stiffness adjustment device with body pressure detection function of the present invention, when the occupant does not input an instruction to the control device and the air source does not input gas into the containment cavity, if the air pressure change in the containment cavity exceeds a preset air pressure threshold within a preset unit time, the control device adjusts the air pressure in the containment cavity to the initial state through the air source.

[0023] When an occupant leaves the seating area, the air pressure in the chamber of the regulating airbag will change accordingly. When the air pressure change reaches the preset air pressure threshold, the control device will adjust the air pressure in the regulating airbag to the initial state, in preparation for body pressure detection of other occupants in the seat.

[0024] After the vehicle is turned off or the occupants leave, adjusting the air pressure in the chamber of the airbag to its initial state can improve the detection efficiency of the vehicle seat and the body pressure detection adjustment device in the next stage.

[0025] In one embodiment of the body pressure detection function of the present invention, the body pressure detection function of the body pressure detection function of the body pressure detection function further includes a plurality of regulating air bags and a plurality of regulating valves, the plurality of regulating air bags are spaced apart, the regulating valves are provided on the connecting pipeline between the air supply port of the air source and the receiving cavity, and each regulating valve is configured to control one or more of the regulating air bags.

[0026] Multiple adjustable airbags work together to detect occupant body pressure, which can make the detection more accurate. The multiple adjustable airbags can be distributed in different positions in the seating area to meet the requirements of accurate detection for occupants with different body pressures or body types.

[0027] Multiple regulating air bags can be adjusted together using a single regulating valve, or a single regulating air bag can be controlled independently using a single regulating valve.

[0028] A second aspect of the present invention provides a vehicle seat, the vehicle seat including a firmness adjustment device having a body pressure detection function as described in any of the preceding claims; The vehicle seat also includes foam, wherein the upper part of the foam is provided with the adjusting air bag, or the lower part of the foam is provided with the adjusting air bag, or the middle area of ​​the foam is provided with the adjusting air bag. Attached Figure Description

[0029] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A schematic diagram of the structure of the vehicle seat seating area of ​​the present invention, which arranges a softness and hardness adjustment device with body pressure detection function, is shown, in which the positional relationship of multiple adjustment airbags is shown; Figure 2 This is a structural schematic diagram of the vehicle seat of the present invention; Figure 3 for Figure 2 Sectional view along axis AA; Figure 4 This is a connection diagram of the softness / hardness adjustment device with body pressure detection function according to the present invention; Figure 5 This is a structural schematic diagram of the vehicle seat of the present invention from another perspective; Figure 6 This is a schematic diagram of the structure of the regulating air bag of the soft and hardness regulating device with body pressure detection function of the present invention; Figure 7 for Figure 6 BB-direction sectional view.

[0030] Icon labels: 100. A stiffness adjustment device with body pressure detection function; 110. Adjustable air bag; 111. Receiving cavity; 112. Air vent; 113. Upper surface; 114. Lower surface; 120. Air pressure testing equipment; 130. Gas source; 140. Control device; 150. Height-limiting tie rods; 160. Flexible resilient material; 170. Bearing surface; 180. Spring frame; 200. Vehicle seat; 210. Seating area; 220. Foam; 230. Noise reduction components. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0032] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0033] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] According to the first aspect of this application, a stiffness adjustment device with body pressure detection function is provided. The stiffness adjustment device with body pressure detection function is installed in the seating area of ​​a vehicle seat to detect the occupant's level and adjust the stiffness of the seating area.

[0036] Figure 1 This is a schematic diagram of the structure of a vehicle seat seating area arrangement with a body pressure detection function for arranging a firmness adjustment device 100, which shows the positional relationship of multiple adjustment airbags 110. Figure 2 This is a structural schematic diagram of the vehicle seat 200 of the present invention. Figure 3 for Figure 2 AA-direction sectional view, combined with Figure 1 , Figure 2 and Figure 3 The stiffness adjustment device with body pressure detection function includes: an adjustment air bag 110, an air pressure detection element 120, an air source 130, and a control device 140.

[0037] The adjustable airbag 110 is provided with a receiving cavity 111, which is used to carry the occupants on the seating area 210. The receiving cavity 111 is provided with a flexible rebound member 160, which is used to support the inner wall of the receiving cavity 111 to contain gas. The receiving cavity 111 is reserved for gas to detect the body pressure of the occupants. The detection end of the air pressure detection element 120 is used to detect the air pressure inside the receiving cavity 111; The air supply port of the air source 130 is connected to the receiving cavity 111 through a connecting pipe, and is used to adjust the total air volume in the receiving cavity 111 to adjust the firmness of the seating area 210.

[0038] The control device 140 determines the occupant's body pressure level based on the detected air pressure in the containment cavity 111.

[0039] The cavity 111 contains a flexible rebound material and an initial amount of gas. The flexible rebound material 160 is used to support the inner wall of the cavity 111 to contain the gas. The initial amount of gas is used for occupant body pressure detection.

[0040] The softness and hardness adjustment device with body pressure detection function of the present invention can detect and classify occupants, and can also adjust the softness and hardness of the seat. It integrates the two functions of occupant classification and softness and hardness adjustment into one, which can save the limited space in the seat and solve the problem that traditional occupant classification and softness and hardness adjustment cannot be arranged at the same time.

[0041] The seat firmness adjustment device with body pressure detection function provided by this invention can also adjust the firmness of the seat according to the passenger's level, improve the comfort of different passengers, meet the diverse needs of passengers, and more importantly, the seat with higher comfort can alleviate passenger fatigue and provide a comfortable environment for people during the journey.

[0042] The body pressure detection and firmness adjustment device 100 of the present invention can detect the body pressure of the occupant and adjust the firmness of the seating area 210 of the seat. It integrates the occupant detection and grading function and the firmness adjustment function of the seat, which can save the limited space in the seat and solve the problem that the traditional occupant grading and firmness adjustment cannot be arranged at the same time.

[0043] The seat firmness adjustment device with body pressure detection function provided by this invention can also adjust the firmness of the seat according to the passenger's level, improve the comfort of different passengers, meet the diverse needs of passengers, and more importantly, the seat with higher comfort can alleviate passenger fatigue and provide a comfortable environment for people during the journey.

[0044] In the body pressure detection function of the softness and hardness adjustment device 100 provided by the present invention, designers can imagine integrating the body pressure detection function of the occupant with the softness and hardness adjustment function of the seat to meet the occupant's high comfort requirements and also to meet the occupant's high intelligent requirements for the seat. For example, the occupant can be classified according to the body pressure detection function, and then the softness and hardness can be adjusted to a level suitable for the occupant according to the occupant's level. For another example, the seat can activate the memory function for the occupant who sits on the vehicle frequently to store the occupant's body pressure detection parameters and the softness and hardness parameters that the occupant often sets, so that the seat can be quickly adjusted to a level of softness and hardness suitable for the occupant.

[0045] It should be noted that, in combination Figure 1 When a passenger is seated normally, the point where the human body connects to the thighs—the hip point, or H point for short—is the reference point for determining the interior dimensions related to the driver's ease of operation and passenger comfort. The adjustable airbag 110 is located near the H point, especially the receiving cavity 111 of the adjustable airbag 110, which should be close to the H point.

[0046] like Figure 1 As shown, the stiffness adjustment device 100 with body pressure detection function provided in this embodiment is installed in the seating area 210 of the vehicle seat 200. The stiffness adjustment device 100 includes multiple adjustment air bags 110, which are spaced apart along the width direction of the vehicle within the seating area 210. Each adjustment air bag 110 contains a flexible rebound material 160, which is an open-pore sponge, used to support the inner wall of the receiving cavity 111 of the adjustment air bag 110 and to form a gas channel within the receiving cavity 111. Each adjustment air bag 110 has an initial amount of gas reserved in its receiving cavity 111 for occupant body pressure detection. Inside the adjustment air bag 110, a height limiting brace 150 is also provided, which is vertically connected between the upper surface 113 and the lower surface 114 of the receiving cavity 111 to limit the expansion height of the adjustment air bag 110 when inflated, thus preventing the occupant from experiencing a foreign body sensation. Multiple adjustable airbags 110 jointly carry the occupant. The control device 140 collects the air pressure value of the air pressure detection device 120 in each adjustable airbag 110 and determines the occupant's body pressure level and sitting posture by comparing the distribution of each air pressure value.

[0047] like Figure 2 As shown, the stiffness adjustment device 100 with body pressure detection function provided in this embodiment is installed in the seating area 210 of a vehicle seat 200. The stiffness adjustment device 100 includes multiple adjustable air bags 110, each with a vent 112. A bearing surface 170 covers the upper part of the multiple adjustable air bags 110, the bearing surface 170 being for direct contact with the occupant. A spring frame 180 (combined with) is provided below the adjustable air bags 110. Figure 5To provide overall support, each regulating air bag 110 contains a flexible rebound material 160 and a height-limiting tie rod 150. The flexible rebound material 160 is made of polyurethane foam with multiple micropores inside to accommodate the initial amount of detection gas. The height-limiting tie rods 150 are evenly distributed inside the regulating air bag 110 to prevent excessive local bulging. The gas source 130 is connected to each air inlet 112 through pipelines to achieve independent or combined inflation and deflation control of each regulating air bag 110.

[0048] Figure 3 for Figure 2 A sectional view along line AA, such as Figure 3 As shown in the illustration, this embodiment specifically demonstrates the internal structure of the adjustable airbag 110. The receiving cavity 111 of the adjustable airbag 110 is filled with a flexible rebound material 160. The top of the flexible rebound material 160 contacts the upper surface 113 of the receiving cavity 111, and the bottom contacts the lower surface 114 of the receiving cavity 111. The flexible rebound material 160 is a low-density sponge with a compression rebound rate between 50% and 70%. When the occupant is not seated, the receiving cavity 111 contains an initial amount of gas at atmospheric pressure. When the occupant sits on the bearing surface 170, the occupant's weight compresses the flexible rebound material 160, increasing the air pressure within the receiving cavity 111. The air pressure detector 120 detects this air pressure value and transmits it to the control device 140. The control device 140 calculates the occupant's body pressure level based on the change in air pressure. The bearing surface 170 is located below the adjustable airbag 110, and a spring frame 180 or other support structure is located below the bearing surface 170.

[0049] Figure 4 This is a connection diagram of the hardness adjustment device of the present invention, as shown below. Figure 4 As shown, this embodiment focuses on describing the connection between the air path and the control system. The soft / hardness adjustment device 100 with body pressure detection function includes: multiple adjustable air bags 110, multiple air pressure detection elements 120, an air source 130, and a control device 140. Each adjustable air bag 110 has an air pressure detection element 120 (e.g., a pressure sensor) in its receiving cavity 111. The detection end of the air pressure detection element 120 extends into the receiving cavity 111 to detect the air pressure inside the cavity in real time. The signal lines of each air pressure detection element 120 are connected to the control device 140. The air source 130 is an electric air pump, and its air supply port branches into multiple branch air lines through the main air pipeline, which are respectively connected to the air inlets of each adjustable air bag 110. Each branch air line is equipped with a regulating valve. The control device 140 independently adjusts the total air volume in each adjustable air bag 110 by controlling the opening and closing of the regulating valve and the working state of the air source 130. The control device 140 determines the occupant's body pressure level and sitting posture distribution based on the air pressure values ​​fed back by each air pressure detection device 120, and then controls the air source 130 to inflate or deflate the specific adjustable air bag 110 to achieve the softness and hardness zone adjustment of the seating area 210.

[0050] In one embodiment, the seating area 210 of the vehicle seat 200 is provided with a bearing surface 170, on which a point H is provided. Along the direction the occupant faces while seated, the distance between the foremost end of the receiving cavity 111 and the point H is any value between 185-195 mm. Alternatively, the bearing surface 170 can be positioned above the spring frame 180, combined with... Figure 5 .

[0051] In one embodiment of the present invention, the regulating air bag 110 includes a receiving cavity 111 made of a thin film material.

[0052] In one embodiment of the present invention, a flexible rebound member 160 is provided inside the receiving cavity 111. The flexible rebound member 160 is used to support the inner wall of the receiving cavity 111 to form a cavity for containing gas used for occupant detection. The flexible rebound member 160 may also be provided with a plurality of air holes and a plurality of air channels for containing gas used for occupant detection.

[0053] In one embodiment of the present invention, the seating area 210 of the seat is further provided with a bearing surface 170, and an adjustable air bag 110 is provided on the bearing surface 170, wherein the receiving cavity 111 covers most of the area of ​​the bearing surface 170.

[0054] In one embodiment of the invention, the air source 130 includes an air pump, which is connected to the receiving cavity 111 via an air inlet 112. The air pump has an inflation mode in which it supplies air to the receiving cavity 111.

[0055] In one embodiment of the present invention, after the control device 140 determines the occupant's body pressure level through the air pressure detector 120, it initiates the adjustment of the firmness of the seating area 210.

[0056] The adjustable airbag 110 is configured to detect the occupant's body pressure. The seat's seating area 210 is also set to have different levels of firmness by adjusting the airbag 110. Gas is reserved in the receiving cavity 111 of the adjustable airbag 110 for detecting the occupant's body pressure. First, the occupant's body pressure is detected, and then the seat's seating area 210 is adjusted to a firmness suitable for the occupant, so that the occupant can sit more comfortably in the seating area 210 with stable air pressure.

[0057] In one embodiment of the present invention, the control device 140 controls the air source 130 to supply air to the accommodating cavity 111 according to the occupant's body pressure level in order to adjust the firmness of the seating area 210.

[0058] In one method of controlling seat firmness, the firmness of the seating area 210 can be adjusted according to the occupant's level or according to the occupant's personal habits. Specifically, determining the firmness of the seating area 210 based on the occupant's body pressure detection enables the control device 140 to intelligently control the seat, meeting the occupant's intelligent requirements for the seat. It also enables the control device 140 to have a memory function, allowing it to quickly respond to and adjust the seat for frequently used occupants.

[0059] In one embodiment of the present invention, the soft and hardness adjustment device 100 with body pressure detection function further includes a control valve, which is located on the connecting pipeline between the air supply port of the air source 130 and the receiving cavity 111. The occupant adjusts the total air volume of the receiving cavity 111 through the control valve.

[0060] When occupants experience different seat firmness levels, the total air volume within the airbag 110 can be controlled via a control valve to actively adjust the seat firmness. This control valve can be configured as a function button accessible to the occupant while seated, facilitating operation by the occupant.

[0061] In one embodiment of the present invention, the control device 140 further includes a storage unit for storing the correspondence between the occupant's body pressure level and the firmness level of the seating area 210 and forming stored data. The control device 140 adjusts the firmness of the seating area 210 according to the stored data.

[0062] The system stores the detected occupant's body pressure and the occupant's commonly used firmness level. It also matches the occupant's body pressure with the occupant's commonly used firmness level to form stored data. This allows the control device 140 to retrieve historical data from the stored data in a timely manner and quickly set the seat to a firmness level that matches the occupant, improving the seat's adjustment efficiency and further enhancing the seat's intelligence level.

[0063] In one embodiment of the present invention, the stiffness adjustment device 100 with body pressure detection function further includes a command input device, through which the occupant inputs adjustment commands to the control device 140.

[0064] The occupant operates the control device 140 by inputting commands and adjusts the firmness of the seat to a comfortable level. The control device 140 and the occupant work together to adjust the firmness of the seat. The occupant's personal habits can be used to improve and supplement the automatic adjustment function of the seat, making the seat more user-friendly.

[0065] In one embodiment of the present invention, after the vehicle is turned off, the control device 140 adjusts the air pressure in the receiving cavity 111 to the initial state through the air source 130.

[0066] By adjusting the gas in the regulating air bag 110 to its initial state, body pressure detection can be performed on other occupants seated in the seating area 210. The initial state means that gas is reserved in the receiving cavity 111 of the regulating air bag 110 for body pressure detection of occupants, and the gas pressure is adjusted to a preset value, such as standard atmospheric pressure. In different regulating systems, the preset value can also be set to other values.

[0067] In one embodiment of the present invention, when the occupant does not input a command to the control device 140 and the gas source 130 does not input gas into the containment cavity 111, if the change in air pressure in the containment cavity 111 exceeds a preset air pressure threshold within a preset unit time, the control device 140 adjusts the air pressure in the containment cavity 111 to the initial state through the gas source 130.

[0068] When an occupant leaves the seating area 210 of the seat, the air pressure in the receiving cavity 111 of the regulating airbag 110 will change accordingly. When the air pressure change reaches the preset air pressure threshold, the control device 140 will adjust the air pressure in the regulating airbag 110 to the initial state, in preparation for body pressure detection of other occupants on the seat.

[0069] After the vehicle is turned off or the occupants leave, the air pressure in the receiving cavity 111 of the regulating air bag 110 is adjusted to the initial state, which can improve the detection efficiency of the vehicle seat 200 and the soft and hard adjustment device 100 with body pressure detection function in the next stage.

[0070] In one embodiment of the present invention, the soft and hardness adjustment device 100 with body pressure detection function further includes a plurality of adjusting air bags 110 and a plurality of adjusting valves. The plurality of adjusting air bags 110 are spaced apart. The adjusting valves are located on the connecting pipeline between the air supply port of the air source 130 and the receiving cavity 111. Each adjusting valve is configured to control one or more adjusting air bags 110.

[0071] Multiple adjustable airbags 110 work together to detect the occupant's body pressure, which can make the occupant's body pressure detection more accurate. The multiple adjustable airbags 110 can be distributed in different positions in the seating area 210, thereby meeting the requirements for accurate detection of occupants with different body pressures or different body types.

[0072] Multiple regulating air bags 110 can be adjusted by one regulating valve for joint adjustment, or one regulating air bag 110 can be controlled by one regulating valve for relatively independent control.

[0073] After the airbags determine the occupant's class and posture, the control device can also control the inflation and deflation of the airbags to achieve the seat's massage function. The control device inflates and deflates the airbags in the areas where the occupant's body can contact the seat to massage the occupant, while the airbags in the areas of the seat not touched by the occupant's body remain in their initial state without inflation or deflation, thus saving air supply and energy.

[0074] After the control device fills the regulating air bag with gas, it quickly releases some of the gas inside the regulating air bag, and then quickly fills the regulating air bag with gas again. This is a deflation and inflation cycle. By repeatedly and rapidly filling and releasing some of the gas inside the regulating air bag, a portion of the regulating air bag is pushed up multiple times within a unit of time, producing a tapping massage sensation on the occupant's massage area. The muscles in the occupant's tapping massage area relax, making it more comfortable.

[0075] In one embodiment of the present invention, the soft and hardness adjustment device with body pressure detection function further includes a height limiting tie 150, which is disposed on the adjustment air bag 110. One end of the height limiting tie 150 is connected to the upper surface 113 of the receiving cavity 111, and the other end is connected to the lower surface 114 of the receiving cavity 111.

[0076] The height limiting brace 150 on the adjustable airbag 110 is used to limit the expansion height of the receiving cavity 111, reducing the occupant's feeling of foreign objects on the seat. Especially for the receiving cavity 111 made of thin film material, such as massage airbag, the height limiting brace 150 can limit the height of the middle bulge of the massage airbag.

[0077] Figure 6 This is a schematic diagram of the regulating air bag 110 of the soft / hardness regulating device with body pressure detection function of the present invention. Figure 7 for Figure 6 BB-direction sectional view, combined Figure 6 and Figure 7 In one embodiment of the present invention, the height limiting tie 150 is disposed in the receiving cavity 111.

[0078] Setting the height limiting tie 150 inside the receiving cavity 111 can reduce the interference of the external environment on the height limiting tie 150, thereby protecting the regulating air bag 110 and the receiving cavity 111; when the height limiting tie 150 is fixedly connected to the inner wall of the receiving cavity 111, the connection strength can also be improved inside the receiving cavity 111.

[0079] In one embodiment of the present invention, one end of the height limiting tie 150 is provided with a height limiting plane, the height limiting plane is located outside the receiving cavity 111, and the height limiting plane abuts against the upper surface 113 of the receiving cavity 111 to limit the expansion height of the upper surface 113.

[0080] By setting a height-limiting plane to restrict the expansion height of the upper surface 113 of the cavity 111, sudden bulging in some areas of the upper surface 113 of the cavity 111 can be reduced, which can improve passenger comfort. Setting the height-limiting plane on the outside of the cavity 111 is especially suitable for cavities 111 made of thin film material, because when a thin film cavity 111 is filled with gas, it is easy to bulge in the middle area, causing discomfort to the occupant. By setting a height-limiting plane on some areas of the outside of the cavity 111 to limit local bulging, the seat adjustment can be more in line with the occupant's comfort level.

[0081] Figure 6 A top view of the adjustable airbag 110 is shown below. Figure 6 As shown, this embodiment provides a specific structure for the adjustable air bag 110. The adjustable air bag 110 is rectangular or square, and has multiple height-limiting ribs 150 inside. The height-limiting ribs 150 are arranged in an array in the plane of the adjustable air bag 110, for example, in a 2×2 or 3×3 grid pattern. The two ends of each height-limiting rib 150 are connected to the upper surface 113 and the lower surface 114 of the adjustable air bag 110, respectively. The height-limiting ribs 150 can be fixed by sewing, heat sealing, or adhesive bonding. The adjustable air bag 110 has vents 112 at its corners for connecting to the pipeline of the air source 130. Figure 6 The BB section line in the diagram indicates the location of the subsequent sectional view. In this embodiment, the height of the height limiting rib 150 is equal to the natural height of the adjustable airbag 110 when it is not inflated. When the adjustable airbag 110 is inflated, the height limiting rib 150 is straightened, limiting the maximum distance between the upper surface 113 and the lower surface 114, thereby controlling the expansion height of the adjustable airbag 110 within a preset range (e.g., 3-5 cm) to avoid discomfort to the occupants due to excessive inflation.

[0082] Figure 7 for Figure 6 BB-direction sectional view, such as Figure 7As shown in the illustration, this embodiment details the connection method of the height-limiting tie 150 inside the adjustable airbag 110. The upper surface 113 and lower surface 114 of the adjustable airbag 110 are both made of a flexible film material (e.g., TPU or PVC-coated fabric). The receiving cavity 111 is filled with a flexible rebound material 160, which is polyurethane foam with internal connecting holes. The height-limiting tie 150 is a flexible fabric strip, with its upper end fixedly connected to the inner wall of the upper surface 113 and its lower end fixedly connected to the inner wall of the lower surface 114. The length of the height-limiting tie 150 is less than the maximum distance between the upper surface 113 and the lower surface 114 of the adjustable airbag 110 in its natural state, thus providing a limiting effect during inflation. The flexible rebound material 160 fills the gaps between the height-limiting tie 150, supporting the inner wall of the receiving cavity 111 to maintain the initial gas-containing space, and assisting the adjustable airbag 110 in returning to its initial shape after the occupant leaves. When the regulating air bag 110 is not inflated, the flexible rebound material 160 is in a relaxed state; when the air source 130 inflates the receiving cavity 111, the gas enters the pores of the flexible rebound material 160, causing the regulating air bag 110 to expand as a whole until the height limiting tie 150 is straightened, at which point the regulating air bag 110 reaches its maximum design height.

[0083] Figure 5 This is a structural schematic diagram of the vehicle seat 200 of the present invention from another perspective, combined with... Figure 5 The second aspect of the present invention provides a vehicle seat 200, which includes a firmness adjustment device 100 with body pressure detection function as described in any of the above claims. The vehicle seat 200 also includes foam 220, wherein an adjustment air bag 110 is provided on the upper part of the foam 220, and multiple adjustment air bags 110 may also be provided on the upper part of the foam.

[0084] Figure 5 This is another structural schematic diagram of the vehicle seat 200 of the present invention, as shown below. Figure 5As shown, the vehicle seat 200 provided in this embodiment includes the body pressure detection function and firmness adjustment device 100 described in any of the above embodiments. Specifically, the vehicle seat 200 includes foam 220, a sound-absorbing component 230, a bearing surface 170, a spring frame 180, and the firmness adjustment device 100. A groove is formed in the upper part of the foam 220, and an adjustment air bag 110 is embedded in the groove, i.e., the adjustment air bag 110 is located in the upper part of the foam 220. The upper surface of the adjustment air bag 110 is covered with the sound-absorbing component 230, which is a non-woven fabric or a microporous membrane, used to reduce the noise when the adjustment air bag 110 is inflated or deflated. Above the sound-absorbing component 230 is the bearing surface 170. Below the foam 220 is a spring frame 180, which is fixed to the seat frame. A flexible rebound material 160 is disposed inside the adjustment air bag 110. When the occupant sits down, the initial gas in the adjustable airbags 110 is compressed. The control device 140 determines the body pressure level based on the air pressure detection value, and then adjusts the air volume of each adjustable airbag 110 through the air source 130 to change the firmness of the seating area 210. The foam 220 provides basic elastic support and works together with the adjustable airbags 110 to improve comfort.

[0085] In one embodiment, the regulating air bag 110 is located at the lower part of the foam 220, and multiple regulating air bags 110 may also be provided at the lower part of the foam.

[0086] In one embodiment, the regulating air bag 110 is located in the middle area of ​​the foam 220, and multiple regulating air bags 110 may also be provided in the middle area of ​​the foam.

[0087] In one embodiment of the vehicle seat 200 of the present invention, the vehicle seat 200 further includes foam 220 disposed on the adjusting air bag 110, at least covering the receiving cavity 111.

[0088] In one embodiment of the vehicle seat 200 of the present invention, the vehicle seat 200 further includes a noise reduction assembly 230 disposed between the foam 220 and the adjustable air bag 110.

[0089] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A stiffness adjustment device (100) with body pressure detection function, characterized in that, The stiffness adjustment device (100) with body pressure detection function is installed in the seating area (210) of the vehicle seat (200). The stiffness adjustment device (100) with body pressure detection function includes: An adjustable airbag (110) is provided with a receiving cavity (111) for carrying occupants in the seating area (210). The receiving cavity (111) is provided with a flexible rebound material and an initial amount of gas. The flexible rebound material (160) is used to support the inner wall of the receiving cavity (111) to contain the gas. The initial amount of gas is used for occupant body pressure detection. A pressure detection device (120) is provided, wherein the detection end of the pressure detection device (120) is used to detect the pressure inside the receiving cavity (111); An air source (130) has its air supply port connected to the receiving cavity (111) via a connecting pipe, and is used to adjust the total air volume in the receiving cavity (111) to adjust the firmness of the seating area (210). A control device (140) determines the occupant's body pressure level based on the detected air pressure in the containment cavity (111).

2. The stiffness adjustment device with body pressure detection function according to claim 1, characterized in that, After the control device (140) determines the occupant's body pressure level through the air pressure detection device, it initiates the adjustment of the firmness of the seating area (210).

3. The stiffness adjustment device with body pressure detection function according to claim 2, characterized in that, The control device (140) controls the air source (130) to supply air to the accommodating cavity (111) according to the occupant's body pressure level in order to adjust the firmness of the seating area (210).

4. The stiffness adjustment device with body pressure detection function according to claim 2, characterized in that, The stiffness adjustment device with body pressure detection function also includes a control valve, which is located on the connecting pipeline between the air supply port of the air source (130) and the accommodating cavity (111). The occupant adjusts the total air volume of the accommodating cavity (111) through the control valve.

5. The stiffness adjustment device with body pressure detection function according to claim 2, characterized in that, The control device (140) further includes a storage unit for storing the correspondence between the occupant's body pressure level and the firmness level of the seating area (210) and forming stored data. The control device (140) adjusts the firmness of the seating area (210) according to the stored data.

6. The stiffness adjustment device with body pressure detection function according to claim 2, characterized in that, The stiffness adjustment device with body pressure detection function also includes a command input device, through which the occupant inputs adjustment commands to the control device (140).

7. The stiffness adjustment device with body pressure detection function according to any one of claims 1-6, characterized in that, After the vehicle is turned off, the control device (140) adjusts the air pressure in the accommodating cavity (111) to the initial state through the air source (130).

8. The stiffness adjustment device with body pressure detection function according to any one of claims 1-6, characterized in that, When the occupant does not input a command to the control device (140) and the gas source (130) does not input gas into the containment cavity (111), if the change in air pressure in the containment cavity (111) exceeds a preset air pressure threshold within a preset unit time, the control device (140) adjusts the air pressure in the containment cavity (111) to the initial state through the gas source (130).

9. The stiffness adjustment device with body pressure detection function according to any one of claims 1-6, characterized in that, The soft and hardness adjustment device with body pressure detection function also includes a plurality of the adjustment air bags (110) and a plurality of adjustment valves. The plurality of adjustment air bags (110) are spaced apart. The adjustment valve is located on the connecting pipeline between the air supply port of the air source (130) and the receiving cavity (111). Each adjustment valve is configured to control one or more of the adjustment air bags (110).

10. A vehicle seat (200), characterized in that, The vehicle seat (200) includes a firmness adjustment device (100) with body pressure detection function as described in any one of claims 1-9; The vehicle seat also includes foam (220), wherein the upper part of the foam (220) is provided with the adjusting air bag (110), or the lower part of the foam (220) is provided with the adjusting air bag (110), or the middle area of ​​the foam (220) is provided with the adjusting air bag (110).

Images