Vehicle Seat Back Swing Mechanism for Cornering Shoulder Relief
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Solution Overview
Problem
Conventional seat apparatuses for vehicles do not effectively relieve pressure on the driver's shoulders during steering operations, leading to discomfort and reduced operability during cornering, while maintaining holding ability.
Innovation Solution
A seat apparatus with a seat back frame equipped with a cornering sensor and a control unit that adjusts the position of the backboard via a swing mechanism, moving the side parts inward and outward relative to the cornering direction to tilt the driver's posture inward, thereby reducing shoulder pressure and improving steering operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If side support frames are moved to improve holding ability during cornering, then driver holding ability is improved, but pressure on driver's shoulders increases and steering operability deteriorates
Solution Approach 1:
The invention divides the seat back frame into multiple independent movable parts: the upper backboard and lower backboard can move relative to each other, and the left and right side frames can move independently. This segmentation allows different regions to perform different functions - the upper part provides holding support while the lower part accommodates steering operations, thereby resolving the contradiction between holding ability and steering operability.
Solution Approach 2:
The invention employs dynamic adjustment mechanisms that allow the seat back frame components to move automatically in response to vehicle cornering forces. The upper backboard moves relative to the lower backboard based on detected cornering acceleration, enabling the seat to adapt its configuration dynamically - providing firm holding during cornering while maintaining steering operability by adjusting the relative positions of different frame components.
2Reliability
If side support frames are moved to hold driver during cornering, then safety is improved, but driver feels strangeness and discomfort during operation
Solution Approach 1:
The invention applies different movement characteristics to different parts of the seat back frame. The upper backboard is designed to move relative to the lower backboard, with the upper part providing active holding support for safety while the lower part remains relatively stable to maintain driver comfort and natural operating posture. This local differentiation of movement properties resolves the contradiction between safety and comfort.
Data Source
AI summary
In order to improve steering operation operability during cornering while maintaining a driver holding property, a seat apparatus is provided with: a seat back frame; a cornering sensor for detecting a cornering direction of a vehicle; and a control unit that controls the seat back frame on the basis of the result of detection by the cornering sensor. The seat back frame is provided with: left and right side frames disposed on both sides of the seat back frame; a back plate disposed between the left and right side frames; and a swinging mechanism for swinging the back plate with respect to the direction of movement of the vehicle. The control unit controls the swinging mechanism such that, upon detection of a cornering direction of the vehicle by the cornering sensor, the inner one of the sides of the back plate with respect to the cornering direction is positioned rearward of the outer one of the sides with respect to the cornering direction.