Vehicle Seat Upper Backrest Lateral Displacement Guide Roller
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Solution Overview
Problem
Conventional vehicle seats for agricultural utility vehicles fail to provide adequate support for drivers in laterally or rearwardly oriented seated working postures, leading to discomfort and increased risk of fatigue and injury due to constrained body positions, which can result in reduced work efficiency and increased accident risk.
Innovation Solution
A vehicle seat with a guide roller device that allows the upper backrest part to be laterally displaced and rotated, providing additional torso support and maintaining access to rearward operating elements, thus enhancing driver comfort and reducing fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the upper backrest part is made pivotable about a vertical axis, then the driver can reach rearward operating elements, but the driver has very unsatisfactory support for his upper body in laterally or rearwardly oriented seated working posture
Solution Approach 1:
The upper backrest part is made dynamically displaceable laterally with respect to the lower backrest part through a guide roller device, allowing it to move from a central position to a lateral position. This dynamic adjustment enables the backrest to adapt to different working postures, providing support when needed while allowing access to rearward elements when required
Solution Approach 2:
The backrest is divided into two separate parts: a lower backrest part that remains stationary and an upper backrest part that can be laterally displaced. This segmentation allows each part to fulfill different functions - the lower part provides stable support while the upper part can be repositioned to facilitate access to rearward operating elements
2Ease of operation
If the entire vehicle seat is rotated about a vertical axis, then the driver can reach rear space, but the driver has to turn out of a comfortable seat cushion contour leading to pressure points and discomfort
Solution Approach 1:
The backrest is segmented into lower and upper parts that can move independently. The lower backrest part remains stationary to maintain comfortable support for the driver's back, while only the upper backrest part is laterally displaced to enable access to rearward operating elements, thus avoiding the discomfort caused by rotating the entire seat
3Reliability
If the back cushion is made highly contoured for good support, then load relief is improved, but freedom of movement in the shoulder/arm region is obstructed
Solution Approach 1:
The upper backrest part is made dynamically adjustable through lateral displacement. This allows the back cushion contour to be optimized for load relief in the normal driving position, while enabling freedom of movement in the shoulder/arm region when the upper backrest part is laterally displaced to allow access to rearward operating elements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The guide roller device ensures low-wear, play-free mounting of the upper backrest part, allowing it to support the driver's torso effectively in constrained postures, reducing fatigue and improving work efficiency while minimizing the risk of accidents.
Implementation Method 1
the holding device comprises a guide roller device, by means of which the upper backrest part is arranged laterally displaceably with respect to the lower backrest part along a displacement curve
Data Source
AI summary
The invention relates to a vehicle seat, in particular a utility motor vehicle seat, having a seat part, having a backrest comprising a lower backrest part and an upper backrest part, and having a holding device, by means of which the upper backrest part is mounted displaceably with respect to the lower backrest part, the holding device comprising a guide roller device, by means of which the upper backrest part is arranged laterally displaceably with respect to the lower backrest part along a displacement curve so as to mount the upper backrest part displaceably at least in part past the side edge of the lower backrest part.