Coordinated Seatback and Armrest Motion for Stable Gap Control
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Solution Overview
Problem
Existing vehicle seat control systems fail to maintain a consistent positional relationship between the armrest and seatback when the seatback is tilted, leading to potential gaps that may become too narrow or wide, affecting driver comfort and safety.
Innovation Solution
A vehicle seat control device that includes a reclining unit for tilting the seatback and a sliding unit for the armrest, which maintains a preset positional relationship between the armrest and seatback by sliding the armrest in conjunction with the tilting motion of the seatback, using position detection devices and drive mechanisms to ensure accurate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the seatback and armrest are individually movable, then the seatback can be tilted and the armrest can move independently, but the gap between the armrest and seatback becomes unstable and may become too narrow or too wide
Solution Approach 1:
The patent merges the control of the seatback and armrest by linking their driving mechanisms. The seatback driving device and armrest driving device are coordinated so that when the seatback tilts, the armrest automatically adjusts its position to maintain a stable gap. This combining of control functions resolves the contradiction by preserving independent movability while ensuring positional stability through coordinated operation.
Solution Approach 2:
The patent implements a feedback mechanism where the position of the seatback is detected and used to control the armrest position. The detection device monitors seatback tilt, and this information feeds back to the control device, which automatically adjusts the armrest position accordingly. This feedback loop maintains the stable positional relationship while allowing both components to move independently when needed.
2Stability of the object's composition
If the armrest is moved to maintain a preset positional relationship with the seatback during tilting, then the positional relationship remains stable, but the device complexity increases due to coordinated control mechanisms
Solution Approach 1:
The patent merges the control functions of the seatback and armrest into a coordinated system. By integrating the control logic that links seatback tilt with armrest position adjustment, the system achieves stable positional relationships without requiring entirely separate control mechanisms. This merging reduces overall complexity compared to having fully independent controls while maintaining stability.
Solution Approach 2:
The control device is designed with multi-functionality, serving both to control seatback tilting and to automatically adjust armrest position based on seatback position. This universal control mechanism handles multiple functions through a single integrated system, reducing device complexity while maintaining the stable positional relationship between components.
Data Source
AI summary
A vehicle seat control device, includes: a memory; a processor connected to the memory; a reclining unit that tilts, along a seat front-rear direction relative to a seat cushion on which an occupant sits, a seatback that supports an upper body of the seated occupant sitting on the seat cushion; and a sliding unit that is provided at a seat width direction outer side of the seat cushion and that slides, along the seat front-rear direction, an armrest that supports an arm of the seated occupant, wherein the processor is configured to perform control to slide the armrest via the sliding unit while maintaining a preset positional relationship between the seatback and the armrest in conjunction with an operation whereby the seatback is tilted along the seat front-rear direction via the reclining unit.