Pivotable Seat Wing Rests With Integrated Height Adjustment
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Solution Overview
Problem
Existing motor vehicle seats with pivoting backrests for armrest conversion are difficult to handle and adjust, particularly in adapting to different vehicle occupants, with existing mechanisms being inflexible and posing a risk of injury.
Innovation Solution
The motor vehicle seat design includes a backrest that pivots from upright to horizontal, with wing rests that pivot from a lower to an upper armrest position, featuring a height adjusting device integrated between the support and upholstery parts, allowing for flexible adjustment and secure movement, and incorporating accessible actuation means and a rigid support structure to prevent injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the height adjusting device is arranged between the middle backrest part and an additional support plate, then the wing rests can be adjusted, but the handling during height adjustment becomes more difficult
Solution Approach 1:
The height adjusting device is extracted from the complex assembly involving the middle backrest part and support plate, and is instead integrated directly into the wing rest structure between the support part and upholstery part. This simplifies the adjustment mechanism and improves handling while maintaining adjustability functionality.
Solution Approach 2:
The height adjusting device is merged with the wing rest structure itself, combining the adjustment function directly into the component that needs adjustment. This integration eliminates the need for separate support plates and complex articulation mechanisms, making the device easier to handle while preserving its adaptability.
2Reliability
If the backrest is in the upright position of use, then the seat provides proper support, but the height adjusting device is not accessible for adjustment
Solution Approach 1:
The height adjusting device is designed to be dynamically accessible regardless of the backrest position. By integrating it directly into the wing rest structure, the device remains accessible for adjustment whether the backrest is in the upright position of use or the horizontal position of non-use, eliminating the accessibility problem while maintaining seat support reliability.
3Adaptability or versatility
If the mechanism for adjusting wing rests is made flexible, then adaptation to vehicle occupants is improved, but the mechanism becomes more complex
Solution Approach 1:
The complex articulation mechanism involving multiple support plates and joint quadrilaterals is extracted and replaced with a simplified height adjusting device integrated directly into the wing rest. This reduction in mechanical complexity maintains or even improves the flexibility of adjustment while making the overall system easier to manufacture and maintain.
4Adaptability or versatility
If the wing rests are adjusted using the known mechanism, then height adjustment is possible, but the adjustment becomes more difficult once moved into the armrest position
Solution Approach 1:
The height adjusting device is merged with the wing rest structure itself, allowing adjustment to be performed directly at the point of need regardless of the wing rest's position. This integration eliminates the difficulty of adjusting once the wing rest is in the armrest position, as the adjustment mechanism moves with the wing rest and remains equally accessible in all positions.
Data Source
AI summary
A motor vehicle seat is provided with a backrest which can be pivoted from a substantially upright position of use into a substantially horizontal position of non-use. The backrest includes, but is not limited to a wing rest which in the position of non-use of the backrest can be pivoted from a lower armrest position of non-use about a pivot axis extending in seat direction into an upper armrest position of use to form an armrest. The wing rest includes, but is not limited to a support part as well as an upholstery part and between the support part and the upholstery part a height adjusting device for the height adjustment of the upholstery part relative to the support part is arranged.