Automotive seat adjustment device with adaptive lumbar support
By integrating a pressure sensor array and a pneumatic actuator system into the car seat, automatic adjustment of adaptive lumbar support is achieved, solving the problem that traditional car seats cannot meet personalized lumbar support needs, improving riding comfort and reducing fatigue.
Patent Information
- Application Number
- CN202521631285.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-01
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-01
AI Technical Summary
Traditional car seats have a single method of lumbar support adjustment, which cannot automatically adjust in real time according to changes in the pressure on the passenger's waist, resulting in poor riding comfort and making it difficult to meet the personalized needs of different body types and sitting postures.
Employing a pressure sensor array and pneumatic actuator system, it monitors the pressure distribution in the passenger's waist in real time. The airbag inflation and deflation are controlled by the processing unit to achieve adaptive lumbar support, which can be combined with manual adjustment to meet individual needs.
It achieves real-time automatic adjustment based on changes in passenger lumbar pressure, improving riding comfort and reducing fatigue during long journeys.
Smart Images
Figure CN224675936U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive seat technology, specifically relating to an automotive seat adjustment device with adaptive lumbar support. Background Technology
[0002] With the widespread use of automobiles, people have increasingly higher demands for the comfort of car seats. Traditional car seat lumbar support adjustment methods are relatively simple, usually only allowing for limited adjustments through manual or simple mechanical devices, making it difficult to meet the personalized needs of passengers with different body types and sitting postures for lumbar support. Furthermore, they cannot automatically adjust in real time according to changes in pressure on the passenger's lower back, resulting in poor seating comfort and fatigue during long journeys. Summary of the Invention
[0003] To address the aforementioned problems, this utility model discloses a car seat adjustment device with adaptive lumbar support, which solves the problems of inconvenient lumbar support adjustment and inability to adapt to the different lumbar needs of passengers in existing car seats. It provides a car seat adjustment device with adaptive lumbar support that can automatically adjust the lumbar support strength and shape in real time according to the pressure applied to the passenger's lumbar region, thereby improving riding comfort.
[0004] To achieve the above objectives, the specific technical solution of this application is as follows:
[0005] An adjustable car seat with adaptive lumbar support includes a backrest frame, an adjustable support plate, a pressure sensor array, a processing unit, a pneumatic actuation system, and a user control module. The backrest frame has vertical slide rails on both sides. The adjustable support plate is made of flexible composite material and is slidably connected to the slide rails via bottom grooves; N independent airbags are fixed to its back. The pressure sensor array consists of N thin-film pressure sensor units interconnected by flexible circuitry and attached to the front of the adjustable support plate. The processing unit includes a microcontroller and signal processing circuitry, and is fixed to the side wall of the backrest frame. The pneumatic actuation system includes a miniature air pump, an air tank, a solenoid valve assembly, and connecting air pipes. The user control module is located on the side of the seat.
[0006] Based on the above technical features, furthermore, the output end of the pressure sensor array is connected to the input interface of the processing unit; the output end of the processing unit is respectively connected to the motor drive end of the micro air pump and the control end of the solenoid valve group; the output port of the air pump is connected to the inlet of the air storage tank through an air pipe, the outlet of the air storage tank is connected to the inlet of the solenoid valve group through N branches, and the outlet of each solenoid valve is connected to the corresponding air bag through an air pipe.
[0007] Based on the above technical features, further, in the pneumatic actuator system, the air tank is an aluminum alloy cylinder with an internal air pressure sensor connected to the processing unit; the solenoid valve group consists of N two-position two normally closed solenoid valves arranged in parallel, with the air inlet of each solenoid valve connected to the branch outlet of the air tank, and the air outlet connected to the silicone interface of the corresponding air bag through a PU material air pipe.
[0008] Based on the above technical features, the adjustable support plate has an annular protrusion on its front edge. The pressure sensor array is attached to the annular area formed by the protrusion, and the pressure sensor array is fixed to the adjustable support plate by a medical-grade silicone adhesive layer, ensuring that the pressure sensor array and the adjustable support plate are tightly attached and have good buffering performance.
[0009] Based on the above technical features, the airbag is further connected to the corresponding air tube via a silicone hose, and a check valve is provided at the connection between the silicone hose and the airbag to prevent the gas inside the airbag from flowing back.
[0010] Compared with the prior art, the beneficial effects of this application are as follows:
[0011] This application uses a pressure sensor array to monitor the pressure distribution in different areas of the passenger's waist in real time. The processing unit precisely controls the pneumatic actuator system based on the pressure signal to inflate and deflate each airbag, thereby achieving adaptive support of the adjustable support plate for the passenger's waist and meeting the comfort needs of passengers of different body types and sitting postures.
[0012] The adjustable support plate is made of flexible composite material, which not only has a certain strength to support the passenger's waist, but can also flexibly adjust its shape as the airbag inflates and deflates to fit the curve of the passenger's waist.
[0013] The pneumatic actuator system uses a miniature air pump, air tank and solenoid valve assembly. It has a compact structure, fast response speed and can adjust the airbag state in a timely manner according to pressure changes. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of a car seat adjustment device with adaptive lumbar support according to the present invention.
[0015] Figure 2 This is a schematic diagram of the workflow of this utility model;
[0016] List of identifiers in attached diagrams:
[0017] 101. Backrest frame; 101a. Slide rail; 102. Adjustable support plate; 102a. Airbag; 102b. Slide groove; 103. Pressure sensor array; 103a. Thin-film pressure sensing unit; 104. Processing unit; 105. Miniature air pump; 106. Air tank; 107. Solenoid valve assembly; 108. User control module. Detailed Implementation
[0018] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.
[0019] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" used in the following description refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] like Figure 1 As shown, a car seat adjustment device with adaptive lumbar support includes a backrest frame 101, an adjustable support plate 102, a pressure sensor array 103, a processing unit 104, a pneumatic actuation system, and a user control module 108. The backrest frame 101 has vertical slide rails 101a on both sides. The adjustable support plate 102 is made of flexible composite material; one end of the bottom of the adjustable support plate is fixedly connected to a slide groove, and the other end is slidably connected to the slide rail 101a via a slide groove 102b. N independent airbags 102a are fixed to the back. The pressure sensor array 103 consists of N thin-film pressure sensor units 103a, interconnected by a flexible circuit and attached to the front of the adjustable support plate 102. The processing unit 104 includes a microcontroller and signal processing circuitry, fixed to the side wall of the backrest frame 101. The pneumatic actuation system includes a micro air pump 105, an air tank 106, a solenoid valve group 107, and connecting air pipes. The user control module 108 is located on the side of the seat, allowing passengers to manually adjust it.
[0021] The output of the pressure sensor array 103 is connected to the input interface of the processing unit 104; the output of the processing unit 104 is connected to the motor drive end of the micro air pump 105 and the control end of the solenoid valve group 107 respectively; the output port of the air pump 105 is connected to the inlet of the air storage tank 106 through an air pipe, the outlet of the air storage tank 106 is connected to the inlet of the solenoid valve group 107 through N branches, and the outlet of each solenoid valve is connected to the corresponding airbag 102a through an air pipe.
[0022] In the pneumatic actuator system, the air tank 106 is an aluminum alloy cylinder with an internal air pressure sensor connected to the processing unit 104; the solenoid valve group 107 consists of N two-position two normally closed solenoid valves arranged in parallel, with the air inlet of each solenoid valve connected to the branch outlet of the air tank 106, and the air outlet connected to the silicone interface of the corresponding airbag 102a through a PU material air pipe.
[0023] The adjustable support plate 102 has an annular protrusion on its front edge. The pressure sensor array 103 is attached to the annular area formed by the protrusion, and the pressure sensor array 103 and the adjustable support plate 102 are fixed by a medical-grade silicone adhesive layer, ensuring that the pressure sensor array 103 and the adjustable support plate 102 are tightly attached and have good buffering performance.
[0024] The airbag 102a is connected to the corresponding air tube via a silicone hose. A check valve is provided at the connection between the silicone hose and the airbag 102a to prevent the gas in the airbag 102a from flowing back.
[0025] Working principle:
[0026] When a passenger sits in the car seat, their lower back is in contact with the front of the adjustable support plate 102. The pressure sensor array 103 monitors the pressure in different areas of the lower back in real time and converts the pressure signal into an electrical signal, which is then sent to the processing unit 104. The processing unit 104 processes and analyzes the signal and determines the required inflation state of each airbag 102a according to the preset pressure-airbag inflation volume correspondence.
[0027] If the pressure in a certain area is too high, the processing unit 104 controls the corresponding solenoid valve in the solenoid valve group 107 to open, allowing compressed gas in the air tank 106 to enter the corresponding airbag through the air tube. The airbag inflates, providing greater support to the passenger's waist area. If the pressure in a certain area is too low, the solenoid valve is controlled to close. At the same time, if the air pressure inside the airbag is higher than the set value, it can be vented through the solenoid valve, causing the airbag to contract and adjust to a suitable support force. The miniature air pump 105 provides compressed gas to the air tank 106, and the air pressure sensor inside the air tank 106 monitors the air pressure in real time to ensure that the miniature air pump 105 provides a stable air source.
[0028] Meanwhile, passengers can also manually adjust each airbag through the user control module 108, such as individually controlling the inflation and deflation of a single airbag to meet their personalized needs. The entire device provides passengers with comfortable and supportive lumbar support through a combination of adaptive and manual adjustment, reducing fatigue during long journeys.
[0029] It should be noted that the accompanying drawings merely illustrate the technical concept of the present invention and should not be used to limit the scope of protection of the present invention. For those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.
Claims
1. A car seat adjustment device with adaptive lumbar support, characterized in that: include: The backrest frame (101), adjustable support plate (102), pressure sensor array (103), processing unit (104), pneumatic actuator system, and user control module (108) are provided. Vertical slide rails (101a) are provided on both sides of the backrest frame (101). The adjustable support plate (102) is made of flexible composite material and is slidably connected to the slide rails (101a) through bottom slide grooves (102b). N independent airbags (102a) are fixed on the back. The pressure sensor array (103) is composed of N thin film pressure sensor units (103a), which are interconnected through flexible circuits and attached to the front of the adjustable support plate (102). The processing unit (104) includes a microcontroller and signal processing circuit and is fixed to the side wall of the backrest frame (101). The pneumatic actuator system includes a micro air pump (105), an air tank (106), a solenoid valve group (107), and connecting air pipes. The user control module (108) is located on the side of the seat.
2. The car seat adjustment device with adaptive lumbar support according to claim 1, characterized in that: The output end of the pressure sensor array (103) is connected to the input interface of the processing unit (104); the output end of the processing unit (104) is connected to the motor drive end of the micro air pump (105) and the control end of the solenoid valve group (107) respectively; the output port of the air pump (105) is connected to the inlet of the air storage tank (106) through an air pipe, the outlet of the air storage tank (106) is connected to the inlet of the solenoid valve group (107) through N branches, and the outlet of each solenoid valve is connected to the corresponding air bag (102a) through an air pipe.
3. The car seat adjustment device with adaptive lumbar support according to claim 1, characterized in that: In the pneumatic actuator system, the air tank (106) is an aluminum alloy cylinder with an internal air pressure sensor connected to the processing unit (104); the solenoid valve group (107) consists of N two-position two normally closed solenoid valves arranged in parallel. The air inlet of each solenoid valve is connected to the branch outlet of the air tank (106), and the air outlet is connected to the silicone interface of the corresponding air bag (102a) through a PU material air pipe.
4. The car seat adjustment device with adaptive lumbar support according to claim 1, characterized in that: The adjustable support plate (102) has an annular protrusion on its front edge. The pressure sensor array (103) is attached to the annular area formed by the protrusion. The pressure sensor array (103) and the adjustable support plate (102) are fixed by a medical-grade silicone adhesive layer, ensuring that the pressure sensor array (103) and the adjustable support plate (102) are closely attached and have good buffering performance.
5. The car seat adjustment device with adaptive lumbar support according to claim 1, characterized in that: The airbag (102a) is connected to the corresponding air tube via a silicone hose. A check valve is provided at the connection between the silicone hose and the airbag (102a) to prevent the gas inside the airbag (102a) from flowing back.