Vehicle Seat Back Interlock Control for Easier Bend Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle seat designs require independent adjustment of upper and lower seat back inclinations, making it complicated for users to find suitable angles, as they need to manipulate both sections separately.
Innovation Solution
A vehicle seat with interlock control that synchronizes the reclining angle of the lower seat back and the middle bend angle of the upper seat back using a control part that adjusts both angles based on a predetermined interlock function, allowing for easy adjustment of the seat shape without independent manipulation of each angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If independent adjustment mechanisms are provided for both upper and lower seat backs, then the degree of freedom of adjustment is increased, but the manipulation becomes complicated
Solution Approach 1:
The patent combines the control of upper and lower seat back adjustments into a single integrated mechanism. The seat back assembly includes an upper seat back and lower seat back connected through a shared adjustment mechanism that responds to a single user input, thereby maintaining adaptability while simplifying manipulation.
Solution Approach 2:
The adjustment mechanism is designed to perform multiple functions simultaneously - it can adjust both the upper and lower seat back angles through a single control operation. This multi-functional design allows the system to provide comprehensive adjustment freedom without requiring separate controls for each section.
2Adaptability or versatility
If independent adjustment of upper and lower seat backs is required, then adjustment flexibility is improved, but it becomes difficult to adjust the seat suitably for the occupant
Solution Approach 1:
The patent merges the adjustment controls into a unified system where a single user action coordinates the movement of both upper and lower seat back sections. This integrated approach ensures that the seat can be adjusted suitably for the occupant without the complexity of managing independent adjustments for each section.
3Adaptability or versatility
If separate motors are used for reclining lower seat back and bending upper seat back, then independent control capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the motor control functions into a single integrated drive system. Rather than using separate motors for the upper and lower seat back sections, the invention employs a unified motor and mechanism assembly that can independently position both sections through coordinated mechanical linkages, thereby reducing overall system complexity while maintaining independent control capability.
Data Source
AI summary
A seat includes a seat cushion, and a seat back divided into an upper seat back and a lower seat back. The upper seat back and the lower seat back are connected in a way that their respective angles can be adjusted. The seat further includes a recliner drive part capable of varying a reclining angle which is an angle of the lower seat back to the seat cushion, and a middle bend drive part capable of varying a middle bend angle which is an angle of the upper seat back to the lower seat back. The seat additionally includes a control part configured to perform interlock control for interlocking the reclining angle and the middle bend angle on the basis of a predetermined interlock function.