Vehicle Seat Spring Element With Scissors Frame Damping
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Solution Overview
Problem
Existing vehicle seat spring elements are complex and maintenance-intensive, failing to provide a compact and easily accessible design for effective cushioning of longitudinal horizontal movements.
Innovation Solution
A vehicle seat with a spring element featuring a scissors frame connecting the lower and upper parts, utilizing a resiliently deformable rigid foam spring element and rotatable connecting elements to absorb and direct longitudinal movements, reducing friction and maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex spring element constructions are used in the scissors frame arrangement, then cushioning effect is achieved, but device complexity and maintenance intensity increase
Solution Approach 1:
The spring element is divided into multiple independent components: holding arms, connecting elements, and resiliently deformable spring elements. This segmentation allows each component to be optimized independently and simplifies assembly and maintenance while maintaining the overall cushioning function.
Solution Approach 2:
The resiliently deformable spring element is extracted as a separate functional component from the rigid frame structure. This extraction allows the spring element to be independently replaced or maintained without disassembling the entire scissors frame, reducing maintenance complexity.
2Reliability
If traditional spring element arrangements are used, then cushioning function is provided, but accessibility for maintenance and compactness are reduced
Solution Approach 1:
By segmenting the spring element into modular components connected by holding arms and connecting elements, the design enables individual components to be accessed and replaced independently, significantly improving maintenance accessibility while preserving the cushioning function.
Solution Approach 2:
The holding arms are designed to be rotatable about rotation axes, providing dynamic movement capability. This rotational freedom allows the spring element components to be easily positioned and accessed during maintenance while maintaining effective cushioning during operation.
3Ease of repair
If rotatable connecting elements are used to reduce friction, then maintenance needs are reduced, but device complexity increases
Solution Approach 1:
Rotatable connecting elements replace fixed rigid connections, allowing the spring element components to move freely during assembly and maintenance. This dynamic connection reduces friction and wear while simplifying maintenance operations, and the rotational capability is achieved through simple hinge-like structures rather than complex mechanisms.
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 solution provides a compact, accessible, and cost-effective vehicle seat with improved durability and reduced maintenance, effectively cushioning and damping longitudinal horizontal movements while maintaining consistent spring rate and travel.
Implementation Method 1
a resiliently deformable spring element part (9) being provided which is at least in operative contact with the first holding arm (6) and the second holding arm (7) and is deformed during a displacement of the first holding arm (6) relative to the second holding arm (7)
Implementation Method 2
the resiliently deformable spring element part (9) is designed as a rigid foam element, which means that the spring element part consists of a foam which opposes a relatively high resistance to deformation under pressure load
Data Source
AI summary
A vehicle seat having a lower part and an upper part displaceable relative to the lower part in a longitudinal direction, and a spring element for cushioning longitudinal horizontal movements of the upper part relative to the lower part. A scissors frame connects the lower part and the upper part so that they can move relative to one another. The spring element comprises a first holding arm connected to the upper part, and a second holding arm connected to the scissors frame. The first holding arm and the second holding arm are connected to one another by a first connecting element such that the first holding arm is displaced towards the second holding arm during a displacement of the upper part relative to the lower part. A resiliently deformable spring element part is deformed during a displacement of the first holding arm relative to the second holding arm.