Vehicle Seat Adjustment Mechanism with Coupled Legs
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Solution Overview
Problem
Existing vehicle seat adjustment systems for commercial vehicles are cumbersome, requiring separate adjustments for height and longitudinal position, which can be time-consuming, especially during frequent driver changes.
Innovation Solution
A device with rotatable legs connected to a seat substructure, allowing for simultaneous adjustment of seat position along the height and longitudinal axes through a single angle adjustment mechanism, enabling synchronized displacement of the seat part and support element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate adjustment mechanisms are used for height and longitudinal position, then each adjustment can be made independently, but the adjustment procedure becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines height adjustment and longitudinal position adjustment into a single integrated mechanism. The support element is displaceable in the vertical direction while simultaneously being connected to the seat part in the longitudinal direction, allowing both adjustments to occur together through one operating element rather than requiring separate mechanisms and steps.
Solution Approach 2:
The support element serves multiple functions simultaneously: it acts as both the height adjustment mechanism and the longitudinal position adjustment mechanism. By making the support element displaceable in both vertical and longitudinal directions and connecting it to both the seat substructure and seat part, a single component performs what previously required separate adjustment systems.
2Device complexity
If a single angle adjustment device is used to control both height and longitudinal position, then the number of operating elements is reduced, but the mechanical coupling complexity increases
Solution Approach 1:
The patent employs dynamic mechanical coupling where the support element can displace relative to the seat substructure in the vertical direction and simultaneously displace the seat part in the longitudinal direction. This dynamic relationship allows a single angle adjustment device to control both degrees of freedom through the coupled motion of the support element, reducing the number of static adjustment mechanisms needed.
Solution Approach 2:
The support element acts as an intermediary component between the angle adjustment device and the seat part. It receives the angular adjustment input and translates it into coordinated vertical displacement of itself and longitudinal displacement of the seat part, effectively mediating the relationship between the single control input and the two-dimensional seat position output.
Data Source
AI summary
The invention relates to a device for adjusting a seat position for a vehicle seat, wherein the device comprises at least one support element for a seat part and can be connected to a seat substructure, wherein the device comprises at least one first leg and at least one second leg, the legs being rotatably arranged on the seat substructure and the at least one support element, wherein a first angle α can be adjusted between the first leg and the support element by means of an angle adjustment device, wherein the at least one first leg and the at least one second leg are mechanically coupled, wherein a change of the angle α causes a displacement of the at least one support element along a height axis Z and along a longitudinal axis X.