Vehicle Seat Lumbar Support with Link Brackets and Rotary Screws
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Solution Overview
Problem
Existing lumbar supports for vehicle seats lack stability and deformation resistance, leading to discomfort and potential damage over long use, and do not adequately adjust to various user positions and postures.
Innovation Solution
A lumbar support system featuring a support panel made of elastic material, guided by link brackets and rotary screws, allowing for adjustable protrusion and vertical movement to provide stable and customizable support for the user's lumbar vertebra, incorporating a combination of guide rods, link brackets, and rotary screws for precise adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a lumbar support uses a simple support structure, then the device complexity is reduced, but the stability and resistance to deformation deteriorate
Solution Approach 1:
The lumbar support structure is divided into multiple segments including a support panel, multiple link brackets (first link bracket, second link bracket, third link bracket), and multiple rotary screws. Each segment performs a specific function: the support panel provides lumbar support, the link brackets provide structural framework and movement guidance, and the rotary screws enable precise adjustment. This segmentation allows the system to achieve high stability through distributed load bearing while maintaining manageable complexity through modular design.
2Device complexity
If a lumbar support uses fixed position structure, then the device complexity is reduced, but the adaptability to different user positions and postures deteriorates
Solution Approach 1:
The lumbar support employs dynamic adjustment mechanisms with multiple rotary screws (first, second, and third rotary screws) that enable the support panel to move in multiple directions and positions. The link brackets are designed to move relative to each other, allowing the support structure to adapt to various user positions and postures. This dynamic design provides high adaptability while the modular mechanical structure keeps the complexity manageable through standardized components.
3Ease of manufacture
If a lumbar support uses simple material structure, then the ease of manufacture is improved, but the resistance to deformation and damage over long use deteriorates
Solution Approach 1:
The lumbar support utilizes composite material construction where the support panel is made of elastic material that can deform elastically to provide comfort while maintaining structural integrity. The link brackets and rotary screws appear to be made of rigid materials for structural stability. This composite approach combines materials with different properties: elastic materials for the support surface that need to conform to the user's back, and rigid materials for the structural framework that needs to maintain stability and resist deformation over long-term use.
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 system enhances seating comfort and stability by allowing for adjustable support that minimizes deformation and damage, accommodating different user positions and postures, thereby improving the overall feeling of operation and reducing fatigue.
Implementation Method 1
a first rotary screw vertically extending, thread-fastened to the first link bracket, and moving up and down the first link bracket by rotating about a longitudinal axis; and a second rotary screw vertically extending, thread-fastened to the second link bracket, and moving up and down the second link bracket by rotating about a longitudinal axis
Implementation Method 2
a support panel made of an elastic material and supporting the user's lumbar vertebra
Data Source
AI summary
A lumbar support for a vehicle seat includes: a support panel made of an elastic material and supporting the user's lumbar vertebra; a first guide rod supporting the support panel; a second link bracket fastened to the first guide rod to be movable up and down; a first link bracket disposed under the second link bracket to be movable up and down with respect to the second link bracket, and having an operation block providing a supporting force to the lumbar vertebra; a first rotary screw vertically extending, thread-fastened to the first link bracket, and moving up and down the first link bracket by rotating about a longitudinal axis; and a second rotary screw vertically extending, thread-fastened to the second link bracket, and moving up and down the second link bracket by rotating about a longitudinal axis.