Passenger car damping seat self-adaptive to body weight of passenger

Abstract

The utility model belongs to the technical field of seats, and relates to a passenger car damping seat self-adaptive to the weight of a passenger, which comprises a lower plate assembly, an upper plate assembly and a cross assembly, the upper plate assembly is provided with a controller, an air pump, an electronic air valve and a pressure sensor used for measuring the weight of a seat passenger, the cross assembly is provided with an angle sensor used for measuring the inclination angle of the cross assembly and an acceleration sensor used for measuring the lifting speed of the cross assembly, and the controller receives pressure signals transmitted by the pressure sensor to adjust the pressure of the damping air bag. The controller receives an angle signal and an acceleration signal transmitted by the angle sensor and the acceleration sensor to adjust the damping force of the magnetorheological damper so as to meet the optimal comfort requirement of a passenger sitting on the seat.

Description

Technical Field

[0001] This utility model belongs to the field of seat technology, and in particular relates to a passenger car shock-absorbing seat that adapts to the weight of the occupants. Background Technology

[0002] In existing vehicles, seat height and weight adjustments are manual, even for electric seats, requiring manual operation by pressing switches, which increases the risk of accidents while driving. Therefore, to provide a safer driving environment, seats with adaptive height and weight adjustments are needed. However, current seats only allow manual height adjustment via buttons, failing to adapt to weight changes. Consequently, such seats currently cannot achieve a balance between driving and passenger comfort. Summary of the Invention

[0003] The purpose of this invention is to provide an adaptive weight-based seat height adjustment system that adjusts the seat height or stiffness according to the different weights of the occupants.

[0004] The purpose of this utility model is to solve the following problem:

[0005] An adaptive passenger car shock-absorbing seat with occupant weight includes a lower plate assembly, an upper plate assembly, and a cross-shaped assembly supported between the lower and upper plate assemblies. The upper plate assembly is driven to rise and fall by a shock-absorbing airbag and a magnetorheological damper. The upper plate assembly is equipped with a controller, an air pump, an electronic air valve, and a pressure sensor for measuring the weight of the seat occupant. The cross-shaped assembly is equipped with an angle sensor for measuring its tilt angle and an acceleration sensor for measuring the rising and falling speed. The controller receives pressure signals from the pressure sensors to adjust the pressure of the shock-absorbing airbags. The controller also receives angle signals and acceleration signals from the angle sensors and the acceleration sensor to adjust the damping force of the magnetorheological damper.

[0006] As a further optimization of the above technical solution, the air inlet pipe of the electronic air valve is connected to the air outlet pipe of the air pump, the air outlet pipe is connected to the inner cavity of the shock-absorbing airbag, and the exhaust pipe is connected to the atmosphere. The controller receives the pressure signal transmitted by the pressure sensor to control the electronic air valve and the air pump to inflate the shock-absorbing airbag or to control the electronic air valve to exhaust the shock-absorbing airbag.

[0007] As a further optimization of the above technical solution, when the upper plate assembly reaches the highest designed position, the air pressure of the shock-absorbing airbag is at its maximum value. The controller controls the electronic air valve to release air slightly to reduce the air pressure inside the airbag and improve the comfort of riding.

[0008] As a further optimization of the above technical solution, when the upper plate assembly reaches the designed lowest position, the air pressure of the shock-absorbing airbag is at its lowest value. The controller controls the air pump to slightly inflate the airbag, increasing the air pressure inside the airbag and improving the comfort of riding.

[0009] As a further optimization of the above technical solution, when the upper plate assembly automatically reaches the designed middle position, the air pump can be manually controlled to inflate the shock-absorbing airbags, and the seat can be raised to a comfortable height position.

[0010] As a further optimization of the above technical solution, when the vehicle is not powered off, if the occupant leaves the seat and the controller receives a pressure sensor that detects that no one is on the seat, the seat height remains unchanged.

[0011] As a further optimization of the above technical solution, in the event of a power outage in the vehicle, when the occupant leaves the seat, the controller detects the power outage and receives a pressure sensor indicating that no one is in the seat, and then controls the seat height to lower to the lowest designed position.

[0012] As a further optimization of the above technical solution, the controller is an ECU controller.

[0013] As a further optimization of the above technical solution, the housing of the magnetorheological damper is hinged to the lower plate assembly, and the outer end of the movable rod is hinged to the inner or outer connecting rod of the cross-shaped assembly.

[0014] As a further optimization of the above technical solution, one end of the shock-absorbing airbag is fixed to the lower plate assembly or the cross-shaped assembly, and the other end is abutted on the slide plate provided on the cross-shaped assembly or the lower plate assembly. A roller bearing or a linear bearing is provided between the slide plate and the shock-absorbing airbag.

[0015] The outstanding advantages of this utility model compared to the prior art are:

[0016] 1. Improved ride comfort: Airbags (also known as air springs) are more effective at absorbing high-frequency vibrations, significantly reducing the bumpy feeling caused by uneven road surfaces and improving ride comfort.

[0017] 2. Performance Improvement: The shock absorption effect of the airbag is smoother and more seamless than that of traditional mechanical springs. Moreover, the seat can be adaptively adjusted by the controller according to the changes in the weight of the passengers. Compared with metal springs, the airbag structure is lighter and more convenient, which helps to reduce the overall weight of the vehicle and thus save energy consumption.

[0018] 3. Cost-effectiveness: Although the initial investment may be high, high-quality shock-absorbing airbag components are durable, not easily worn, and have low maintenance requirements, which can save maintenance costs in the long run.

[0019] 4. Adaptability and flexibility: Provides more design freedom and adapts to more car models.

[0020] 5. Environmental Contribution: By reducing energy consumption and emissions, lightweight design has a positive effect on environmental protection, which is in line with the global trend of carbon emission reduction and environmental regulations.

[0021] 6. Intelligent: It identifies the occupant's weight through pressure sensors and can automatically adjust the stiffness of the shock absorber airbags according to the occupant's weight. It identifies the vibration intensity information from the vehicle body through acceleration and angle sensors and adjusts the vibration frequency of the shock absorber airbags and magnetorheological dampers through the controller. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structural principle of this utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 :

[0024] A passenger vehicle shock-absorbing seat with an airbag 16 includes a lower plate assembly 18, an upper plate assembly 13, and a cross-shaped assembly 15 supported between the lower and upper plate assemblies 18 and 13. The upper plate assembly 13 is driven to rise and fall by the shock-absorbing airbag 16 and a magnetorheological damper 22. The upper plate assembly 13 is equipped with a controller 14, an air pump 10, an electronic air valve 11, and a pressure sensor 12 for measuring the weight of the seat occupant. The cross-shaped assembly 15 is equipped with an angle sensor 21 for measuring its tilt angle and an acceleration sensor 20 for measuring the lifting speed. The controller 14 receives the pressure signal transmitted by the pressure sensor 12 and adjusts the pressure of the shock-absorbing airbag 16. The controller 14 receives the angle signal and acceleration signal transmitted by the angle sensor 21 and the acceleration sensor 20 and adjusts the damping force of the magnetorheological damper 22. By automatically adjusting the damping force of the magnetorheological damper 22 and the pressure of the shock-absorbing airbag 16, the elasticity or stiffness of the seat cushion can be adjusted to provide a comfortable seating experience.

[0025] As a further optimization of the above technical solution, the air inlet pipe of the electronic air valve 11 is connected to the air outlet pipe of the air pump 10, the air outlet pipe is connected to the inner cavity of the shock-absorbing airbag 16, and the exhaust pipe is connected to the atmosphere. The controller 14 receives the pressure signal transmitted by the pressure sensor 12 and controls the electronic air valve 11 and the air pump 10 to inflate the shock-absorbing airbag 16 or to exhaust the shock-absorbing airbag 16.

[0026] As a further optimization of the above technical solution, when the upper plate assembly 13 reaches the designed highest position, the air pressure of the shock-absorbing airbag 16 is at its maximum value, and the controller 14 controls the electronic air valve 11 to release air slightly to reduce the air pressure in the airbag and improve the comfort of riding.

[0027] As a further optimization of the above technical solution, when the upper plate assembly 13 reaches the designed lowest position, the air pressure of the shock-absorbing airbag 16 is at its lowest value, and the controller 14 controls the air pump 10 to slightly inflate the airbag, increasing the air pressure inside the airbag and improving the comfort of riding.

[0028] As a further optimization of the above technical solution, when the upper plate assembly 13 automatically reaches the designed middle position, the air pump 10 can be manually controlled to inflate the shock-absorbing airbag 16, and the seat is raised to a comfortable height position.

[0029] As a further optimization of the above technical solution, when the vehicle is not powered off, if the occupant leaves the seat, and the controller 14 receives a signal from the pressure sensor 12 that no one is on the seat, the seat height remains unchanged.

[0030] As a further optimization of the above technical solution, when the vehicle loses power and the occupant leaves the seat, the controller 14 detects the power failure and receives a signal from the pressure sensor 12 that no one is in the seat, and then controls the seat height to lower to the lowest designed position.

[0031] As a further optimization of the above technical solution, the controller 14 is an ECU controller 14.

[0032] As a further optimization of the above technical solution, the housing of the magnetorheological damper 22 is hinged to the lower plate assembly 18, and the outer end of the movable rod is hinged to the inner or outer connecting rod of the cross assembly 15.

[0033] As a further optimization of the above technical solution, one end of the shock-absorbing airbag 16 is fixed on the lower plate assembly 18 or the cross-shaped assembly 15, and the other end is abutted on the slide plate 19 provided on the cross-shaped assembly 15 or the lower plate assembly 18. A roller bearing 17 or a linear bearing is provided between the slide plate 19 and the shock-absorbing airbag 16.

[0034] When the road surface experiences impact or bumps, the upper plate assembly 13 vibrates vertically. Angle sensor 21 detects a change in the angle of the connecting rod of the cross-shaped assembly 15, and acceleration sensor 20 detects a change in vertical displacement acceleration. The ECU controller 14 receives the angle and acceleration analog signals from the angle sensor 21 and acceleration sensor, processes them through a system algorithm, and outputs current to the magnetorheological damper 22. The magnetorheological damper 22 is filled with a special electromagnetic fluid. Under the influence of a magnetic field, the magnetic particles in the electromagnetic fluid quickly align in a specific direction, hindering the flow of oil within the piston channel. By changing the magnitude and direction of the current, the strength and direction of the magnetic field can be adjusted, thereby changing the arrangement of the magnetic particles and the degree of resistance to oil flow, achieving precise control of the damping force of the magnetorheological damper 22.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of this utility model, and are still within the protection scope of this utility model.

Claims

1. A passenger vehicle shock-absorbing seat that adapts to occupant weight, comprising a lower plate assembly, an upper plate assembly, and a cross-shaped assembly supported between the lower and upper plate assemblies, characterized in that: The upper plate assembly is driven to rise and fall by a shock-absorbing airbag and a magnetorheological damper. The upper plate assembly is equipped with a controller, an air pump, an electronic air valve, and a pressure sensor for measuring the weight of the seat occupant. The cross-shaped assembly is equipped with an angle sensor for measuring its tilt angle and an acceleration sensor for measuring the lifting speed. The controller receives the pressure signal transmitted by the pressure sensor to adjust the pressure of the shock-absorbing airbag. The controller receives the angle signal and acceleration signal transmitted by the angle sensor and the acceleration sensor to adjust the damping force of the magnetorheological damper.

2. The adaptive passenger vehicle shock-absorbing seat according to claim 1, characterized in that: The air inlet pipe of the electronic air valve is connected to the air outlet pipe of the air pump, the air outlet pipe is connected to the inner cavity of the shock-absorbing airbag, and the exhaust pipe is connected to the atmosphere. The controller receives the pressure signal transmitted by the pressure sensor to control the electronic air valve and the air pump to inflate the shock-absorbing airbag or to control the electronic air valve to exhaust the shock-absorbing airbag.

3. The adaptive passenger vehicle shock-absorbing seat according to claim 1, characterized in that: When the upper plate assembly reaches its designed highest position, the air pressure of the shock-absorbing airbag is at its maximum value. The controller controls the electronic air valve to release air slightly to reduce the air pressure inside the airbag and improve riding comfort.

4. The adaptive passenger vehicle shock-absorbing seat according to claim 1, characterized in that: When the upper plate assembly reaches the designed lowest position, the air pressure of the shock-absorbing airbag is at its lowest value. The controller controls the air pump to slightly inflate the airbag, increasing the air pressure inside the airbag and improving the comfort of riding.

5. A passenger vehicle shock-absorbing seat that adapts to occupant weight according to claim 1, characterized in that: When the upper plate assembly automatically reaches the designed middle position, the air pump can be manually controlled to inflate the shock-absorbing airbags, raising the seat to a comfortable height position.

6. A passenger vehicle shock-absorbing seat that adapts to occupant weight according to claim 1, characterized in that: When the vehicle is powered on, if the occupant leaves the seat, the controller will maintain the seat height if the pressure sensor detects that no one is in the seat.

7. A passenger vehicle shock-absorbing seat that adapts to occupant weight according to claim 1, characterized in that: In the event of a power outage, when an occupant leaves their seat, the controller detects the power outage and receives a pressure sensor indicating that no one is in the seat, and then lowers the seat height to the lowest designed position.

8. A passenger vehicle shock-absorbing seat that adapts to occupant weight according to claim 1, characterized in that: The controller is an ECU controller.

9. A passenger vehicle shock-absorbing seat that adapts to occupant weight according to claim 1, characterized in that: The housing of the magnetorheological damper is hinged to the lower plate assembly, and the outer end of the movable rod is hinged to the inner or outer connecting rod of the cross assembly.

10. A passenger vehicle shock-absorbing seat that adapts to occupant weight according to claim 1, characterized in that: One end of the shock-absorbing airbag is fixed to the lower plate assembly or the cross-shaped assembly, and the other end is abutted against the slide plate set on the cross-shaped assembly or the lower plate assembly. A roller bearing or a linear bearing is provided between the slide plate and the shock-absorbing airbag.

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