Tilting Vehicle Seat Shell Tensioning for Height and Tilt Adjustment
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Solution Overview
Problem
Existing seat devices for tilting vehicles require additional components like fluid stores or compression means to adjust seat height or tilt, making the adjustment process cumbersome.
Innovation Solution
A seat device with a tensioner mechanism that allows the transmission body to be partially arranged in a recess of the seat shell, enabling easy adjustment of the cushion body's height or tilt by transitioning from a relaxed basic position to a tensioned functional position, where the depth of penetration into the recess is reduced and tensioning force is increased.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a variable-volume interspace filled with fluid is used to adjust seat height or tilt, then the seat position can be varied, but additional components (fluid store and compression means) are required
Solution Approach 1:
The patent extracts the fluid adjustment mechanism from the seat device, eliminating the need for fluid stores and compression means. Instead, it uses a mechanical tensioner system that operates independently of fluid-based adjustment mechanisms, thereby reducing device complexity while maintaining seat position adaptability
Solution Approach 2:
The patent introduces a tensioner as an intermediary mechanical component between the seat cushion and the seat shell. This tensioner uses a rope or belt system with pulleys to provide mechanical advantage, enabling seat adjustment without requiring complex fluid storage and compression systems
2Stability of the object's composition
If the seat shell is directly fixed to the vehicle carrier structure, then structural stability is improved, but seat height and tilt adjustment becomes difficult
Solution Approach 1:
The patent transforms the static, fixed connection between the seat shell and carrier structure into a dynamic, adjustable system. The tensioner mechanism allows the seat shell to be positioned at different heights and tilt angles while maintaining stable fixation at each position, enabling both structural stability and operational flexibility
Solution Approach 2:
The patent employs a nested arrangement where the transmission body is partially received within the seat shell, and the tensioner mechanism is integrated between the cushion body and seat shell. This nesting allows multiple functional components to coexist within a compact structure, enabling adjustment functionality without compromising structural stability
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
This solution simplifies the adjustment of seat height or tilt by utilizing a tensioner that can be easily transferred between basic and functional positions, providing a compact and efficient mechanism for varying the seat's position without the need for additional components, while also allowing for damping of vibrations and reduced wear through elastic components.
Implementation Method 1
the tensioner may be elastically extensible along its direction of extent
Implementation Method 2
Forces from a user of the tilting vehicle, for example vibrations caused by driving the vehicle, that are transmitted to the cushion body and to the transmission body via the seat surface can be cushioned or damped by the tensioner
Data Source
AI summary
A seat device for a vehicle, in particular a tilting vehicle, includes at least one cushion body which forms a seat surface on a side facing a user of the vehicle; at least one transmission body which is disposed or formed on the cushion body on the side of the cushion body facing away from the seat surface and which extends away from the cushion body; at least one rigid seat shell which is disposed on a side of the cushion body facing away from the seat surface and can be fastened to a support structure of the vehicle and has at least one recess, in which at least the transmission body can be or is disposed; and at least one adjustment unit which is disposed between the cushion body and the seat shell and has at least one tensioning element. The tensioning element is disposed in the recess in the seat shell between the cushion body and the seat shell and can be transferred from a relaxed initial position, in which the depth of insertion of the transmission body into the recess in the seat shell is maximal, into at least one loaded functional position, in which the transmission body is displaced by the tensioning element into a position in which the depth of insertion of the transmission body in the recess of the seat shell is reduced in comparison with the initial position.