Vehicle Seat Backrest Sliding Guide for Lateral Displacement
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Solution Overview
Problem
Commercial vehicle drivers, especially those operating agricultural utility vehicles, face discomfort and fatigue due to inadequate support in their seats when adopting laterally or rearwardly oriented positions to operate controls or observe rear implements, leading to strain and reduced safety.
Innovation Solution
A vehicle seat with a sliding guide device that allows the upper backrest part to be displaced laterally and rotated, providing additional torso support without obstructing access to controls or views, and absorbing significant supporting forces to reduce fatigue and improve comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the upper backrest part is made fixed and contoured for forward-facing support, then seating comfort in normal driving position is improved, but freedom of movement and support in lateral/rearward positions deteriorate
Solution Approach 1:
The upper backrest part is made movable relative to the lower backrest part through a holding device, allowing it to be positioned differently according to the driver's needs. This dynamic adjustment enables the backrest to adapt between providing fixed support in forward position and not obstructing movement in lateral/rearward positions.
Solution Approach 2:
The backrest is divided into an upper backrest part and a lower backrest part that can move independently relative to each other. This segmentation allows the upper part to be adjusted separately to provide support when needed while not interfering with driver movement when the driver adopts lateral or rearward oriented positions.
2Adaptability or versatility
If the upper backrest part is made displaceable, then adaptability to different positions is improved, but device complexity increases
Solution Approach 1:
The holding device provides a mechanical linkage that enables the upper backrest part to be displaced between different positions through simple manual operation, achieving adaptability without requiring complex electronic or motorized systems.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3~6
AI summary
The invention relates to a vehicle seat (1), in particular a commercial vehicle seat (1A), with a seat part (2), with a backrest (3) comprising a backrest lower part (16) and a backrest upper part (17), and with a holding device (25) by means of which the backrest upper part (17) is displaceably held relative to the backrest lower part (16), wherein the holding device (25) has a sliding guide device (26; 126; 526) by means of which the backrest upper part (17) is displaceably arranged relative to the backrest lower part (16) along a displacement curve (27) in order to displaceably hold the backrest upper part (17) at least partially beyond the side edge (4A, 4B) of the backrest lower part (16).