Vehicle Seat Adjustment Mechanism with Pull-Wire Locking
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Solution Overview
Problem
Vehicle seat mechanisms on hard terrain conditions tend to dislocate, leading to safety issues as the seat group can move back-and-forth, potentially causing accidents, due to inadequate locking mechanisms in prior art solutions.
Innovation Solution
A seat adjustment mechanism utilizing a pull-wire system, where the motion lever is driven by a user, connected to a pull-wire and spring system, ensuring the seat is securely fixed unless actively adjusted, providing enhanced safety and customization options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a perforated step sheet with spring characteristics is used for seat adjustment, then ease of operation is improved, but reliability deteriorates as the mechanism may dislocate on hard terrain
Solution Approach 1:
The seat adjustment mechanism is divided into separate functional components: a motion lever for user input, a pull-wire for force transmission, a step pin for positioning, and a spring for return action. This segmentation allows each component to be optimized for its specific function while working together as a reliable system that prevents dislocation on hard terrain.
Solution Approach 2:
The pull-wire acts as an intermediary element that transmits the user's pulling force on the motion lever to the step pin and seat sheet assembly. This intermediary mechanism ensures controlled force transmission and prevents direct mechanical connection that could lead to dislocation, thereby improving reliability while maintaining ease of operation.
2Reliability
If the seat group is securely locked to prevent movement, then safety is improved, but ease of operation deteriorates as adjustment becomes difficult
Solution Approach 1:
The mechanism uses a dynamic locking system where the step pin can be easily extracted from its locking position by pulling the motion lever, allowing seat adjustment. When released, the spring automatically returns the step pin to secure the seat group in place. This dynamic operation provides both secure locking and easy adjustment.
Solution Approach 2:
The spring-loaded step pin automatically performs the locking function without user intervention. After the user releases the motion lever, the spring self-actuates to push the step pin back into the locking position, securing the seat group without requiring additional user action. This self-service mechanism improves ease of operation while maintaining reliability.
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 mechanism ensures safe travel by preventing unintended seat movement on rough terrain, offering easy adjustability and secure mounting, thereby enhancing user safety and comfort.
Implementation Method 1
a spring, which is found between said step pin pin protrusion and said second sheet opening such that it would surround said step pin, and which gets contracted with the downward movement of said motion sheet and thus said step pin and come back to its original state when said motion lever is released
Data Source
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AI summary
Seat adjustment mechanism The invention relates to a mechanism used in vehicle seats to provide comfort by means of adjustment of the seating part of the vehicle seat by the user.