Scissors-Type Vehicle Seat Frame Nested Volume Tank
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Solution Overview
Problem
Existing vehicle seat scissors-type frames are complex, require numerous components, and lack space for additional volume tanks, leading to manufacturing tolerances and inefficient use of space, especially with large suspensions and spring travels.
Innovation Solution
A compact and coherent scissors-type frame design using two centrally arranged scissors elements that pass through each other, eliminating the need for lateral elements and additional components, allowing for easy assembly and integration of a damper device within the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple-component rockers with welded-in axles or tubes are used for bearing purposes, then the scissors-type frame can provide sufficient suspension and spring travel, but the manufacturing complexity increases and manufacturing tolerances are affected
Solution Approach 1:
The patent merges the rocker arm and bearing into a single integrated component. The bearing is formed as an integral part of the rocker arm through stamping and deep-drawing processes, eliminating the need for separate axles or tubes that were previously welded or pressed into the rocker arm. This integration simplifies the overall frame construction while maintaining the required suspension performance and spring travel.
Solution Approach 2:
The patent changes the manufacturing parameters and methods by using stamping and deep-drawing processes to create the integrated rocker arm with bearing. This approach replaces traditional welding or pressing operations, thereby reducing manufacturing complexity and improving tolerance control while preserving the mechanical functionality required for reliable suspension.
2Reliability
If external additional volume tanks are added to the air spring system, then the seating comfort and damping can be improved, but the space requirement within the vehicle increases
Solution Approach 1:
The patent implements the additional volume tank as an integrated component within the scissors-type frame structure. The tank is nested within the available space of the frame, utilizing the internal volume that would otherwise be empty. This eliminates the need for separate external tanks while maintaining the air spring system's damping capabilities and seating comfort.
Solution Approach 2:
The scissors-type frame is designed to serve multiple functions: it provides the structural support for the seat, enables height adjustment through its scissor mechanism, and houses the additional volume tank for the air spring system. This multi-functionality reduces the overall space requirement by consolidating multiple components into a single integrated structure.
3Volume of stationary object
If the base frame is compressed to reduce space requirement, then the volume efficiency improves, but the space for additional volume tanks becomes insufficient
Solution Approach 1:
The additional volume tank is nested within the compressed base frame structure, utilizing the internal voids and spaces created by the compact scissors-type frame design. This allows the system to maintain both compact external dimensions and sufficient internal volume for the air spring tank.
Solution Approach 2:
The patent optimizes the spatial arrangement by utilizing three-dimensional space efficiently. The volume tank is positioned in a different spatial dimension within the frame structure, allowing the base frame to be compressed in certain directions while maintaining adequate volume for the tank in other dimensions.
Data Source
AI summary
To be able to produce a scissors-type frame of a vehicle seat in a quick and easy manner, the present invention is directed to a scissors-type frame for a vehicle seat, in particular for a motor vehicle seat, comprising a first scissors element and a second scissors element, wherein the scissors-type frame is height-adjustable by means of the two scissors elements, and wherein the scissors-type frame is characterized in that one of the two scissors elements passes through the other of the two scissors elements.