Circular Seat Control Switch with Rotary Ring and Display
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Solution Overview
Problem
Existing control systems for motor vehicle seat massage functions are complex and lack user-friendly, intuitive operation, especially for rear seat passengers who cannot use dashboard displays.
Innovation Solution
A compact, circular switch with keypads on the end face and an adjustment ring around the circumference allows for intuitive control of multiple seat functions, including massage, lumbar support, and seat adjustment, with a central touchscreen display for direct function selection and parameter adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional operator control by means of dedicated switches on or near the seat is used, then specific functions can be controlled, but the control becomes complicated depending on the configuration of massage programs and options
Solution Approach 1:
The circular switch integrates multiple functions into a single control device. The adjustment ring can rotate to different positions to select different functions (massage intensity, heating level, cushion firmness), while the central push-button provides a universal activation method. This multi-functional design eliminates the need for multiple dedicated switches for each parameter, simplifying the control interface while maintaining comprehensive functionality.
Solution Approach 2:
The switch incorporates dynamic interaction elements: the adjustment ring can rotate to different angular positions for function selection, and the central button can be pressed with varying force or held for different durations. This dynamic control mechanism allows a single switch to handle multiple parameters and functions, reducing overall device complexity while improving ease of operation.
2Adaptability or versatility
If graphical screen-assisted operator control by means of a central interface on the dashboard is used, then complex massage functions can be controlled, but the solution is not suitable for rear seat passengers who cannot access the dashboard
Solution Approach 1:
The control system is segmented into localized units - each seat or group of seats has its own integrated switch mounted on the seat itself or nearby. This segmentation allows rear seat passengers to control their own seats independently without needing to reach the dashboard, while the compact circular design keeps each localized control unit space-efficient.
Solution Approach 2:
The circular switch acts as an intermediary control device that bridges the gap between the passenger and the seat adjustment mechanisms. By placing this mediator directly at the seat location rather than requiring access to the dashboard, the system becomes accessible to all passengers regardless of seating position, while the compact design minimizes installation space.
3Adaptability or versatility
If multiple dedicated switches are provided for each function, then comprehensive control is achieved, but the installation space required increases
Solution Approach 1:
Multiple control functions are merged into a single circular switch device. The adjustment ring integrates function selection, parameter adjustment, and activation capabilities, while the central push-button serves as a universal control element. This merging reduces the installation footprint from multiple distributed switches to one compact centralized unit, accommodating comprehensive functionality in limited space.
Solution Approach 2:
The circular switch is designed as a universal control device that can handle multiple functions through a single interface. The adjustment ring's rotational positions correspond to different functions and parameters, eliminating the need for separate dedicated switches for each function, thereby reducing installation space while maintaining comprehensive control capabilities.
Data Source
AI summary
A motor vehicle seat has a seat inflation system for selectively inflating/deflating a plurality of inflatable cushions in the seat back and/or bottom. A switch for controlling the system includes a display having a first symbol indicating a function of the cushion and a second symbol indicating a parameter of the active function, a plurality of keypads defining a circular perimeter surrounding the display and actuatable to select the active function, and a ring surrounding the perimeter and rotatable to adjust a value of the parameter.