Vehicle Seat Actuator-Link Layout for Compact Multi-Axis Adjustment
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Solution Overview
Problem
The complexity and increased number of components in existing seat adjustment mechanisms for vehicles lead to complicated assembly structures, insufficient mounting space, and elevated manufacturing costs, particularly due to independently provided mechanisms for position, height, and tilting adjustments.
Innovation Solution
A seat-adjusting device utilizing a plurality of actuators connected between a floor panel and a seat cushion frame via a single link, allowing for simultaneous adjustments of seat position, height, and tilting through the selective movement of pistons, thereby simplifying the assembly structure and reducing the number of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If independently provided mechanisms are used for position adjustment, height adjustment, and tilting, then each adjustment function can be achieved, but the total number of components increases and the assembling structure becomes complicated
Solution Approach 1:
The patent combines multiple independent adjustment mechanisms (position, height, tilting) into a single integrated mechanism. The sliding link is connected to the seat cushion frame through multiple links (first link, second link, third link) that work together to achieve all adjustment functions simultaneously, eliminating the need for separate mechanisms for each function.
Solution Approach 2:
The single integrated mechanism performs multiple functions: it adjusts the front-rear position, vertical height, and tilting angle of the seat cushion frame. The motor-driven sliding link controls a system of links that can produce all necessary movements for comprehensive seat adjustment, making one mechanism universal for all adjustment needs.
2Adaptability or versatility
If independently provided mechanisms are used for position adjustment, height adjustment, and tilting, then each adjustment function can be achieved, but the mounting space becomes insufficient
Solution Approach 1:
The patent merges multiple adjustment functions into a single compact mechanism mounted at one location. The sliding link and its associated links are all integrated into a single assembly that occupies minimal space on the floor panel, compared to having separate mechanisms distributed throughout the seat structure.
Solution Approach 2:
The mechanism uses a nested arrangement where links are connected in series (sliding link connected to first link, which connects to second link, which connects to third link). This nested configuration allows the mechanism to achieve complex movements while maintaining a compact footprint, with each link nesting into the overall structure when not in use.
3Adaptability or versatility
If independently provided mechanisms are used for position adjustment, height adjustment, and tilting, then each adjustment function can be achieved, but the manufacturing cost is raised
Solution Approach 1:
The patent combines multiple adjustment functions into a single mechanism, reducing the total number of components that need to be manufactured, inventoried, and assembled. The integrated design allows for standardized production of the link assembly, reducing manufacturing complexity and cost compared to producing and managing multiple separate mechanisms.
Solution Approach 2:
The single integrated mechanism serves multiple purposes (position adjustment, height adjustment, tilting), replacing what would traditionally require three separate mechanisms. This universality reduces the overall bill of materials, lowers manufacturing costs, and simplifies the supply chain while maintaining full adjustment functionality.
4Adaptability or versatility
If independently provided mechanisms are used for position adjustment, height adjustment, and tilting, then each adjustment function can be achieved, but the assembling workability is inevitably lowered
Solution Approach 1:
The patent merges multiple adjustment functions into a single pre-assembled mechanism that can be installed as one unit. The integrated link assembly requires fewer connection points and fewer fastening operations compared to installing three separate mechanisms, significantly improving assembling workability and reducing installation time.
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 assembly process, reduces the number of parts, and secures sufficient layout space for seat adjustments, enhancing workability and ensuring adequate space for swivel seat applications, particularly in autonomous vehicles.
Implementation Method 1
a motor for driving the sliding links
Implementation Method 2
a first piston built in the first cylinder body to be movable back and forth
Implementation Method 3
a hinge on a floor panel; a first actuator connected between the support link and a front lower surface of a seat cushion frame
Data Source
AI summary
A device for adjusting a seat of a vehicle is capable of implementing functions including adjusting a position of the seat back and forth, a height of the seat up and down, and tilting or the like by using a plurality of actuators having pistons. The functions of adjusting the position of the seat back and forth, the height of the seat up and down, and tilting or the like are carried out by providing connections between a floor panel and a seat cushion frame through a plurality of actuators and a single link, and selectively moving a piston of each actuator back and forth.