Vehicle Seat Positioning Bracket for Sliding Lock and Lift Control
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Solution Overview
Problem
Existing vehicle seating assemblies lack flexibility in adjusting positions and securing mechanisms, limiting user convenience and accessibility.
Innovation Solution
A vehicle seating assembly with a track assembly, pivot bracket, lift mechanism, and release mechanism that allows the seat frame to rotate between sitting and standing positions, using a lever assembly and cam assembly to securely lock or unlock the rail within the track, enabling smooth sliding and positioning along a sloped positioning bracket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the seating assembly allows free sliding along the track for position adjustment, then ease of operation is improved, but reliability of position fixation deteriorates
Solution Approach 1:
The system dynamically transitions between locked and unlocked states based on operational needs. The release mechanism allows the seating assembly to be freely adjustable when unlocked, then securely fixed when locked, adapting the system's constraint state to the current operational phase.
Solution Approach 2:
The friction characteristic of the friction engagement feature is dynamically changed between high friction (locked state for secure fixation) and low friction (unlocked state for easy adjustment) through the release mechanism, allowing the same interface to serve both opposing functions.
2Reliability
If a locking mechanism is added to secure the rail in the track, then reliability of position fixation is improved, but device complexity worsens
Solution Approach 1:
The friction engagement feature automatically provides locking functionality through its inherent friction characteristics without requiring additional active locking components. The release mechanism simply needs to overcome this friction to unlock, making the system self-locking by design rather than requiring separate locking and unlocking mechanisms.
Solution Approach 2:
The positioning and locking functions are merged into a single friction-based engagement interface. The same friction engagement feature that provides secure positioning also serves as the locking mechanism, eliminating the need for separate locking components and reducing overall system complexity.
3Adaptability or versatility
If the rail can slide freely for positioning, then adaptability of position adjustment is improved, but stability of the seating assembly deteriorates
Solution Approach 1:
The system transitions between dynamic (free sliding for positioning) and static (locked for stability) states. During the positioning phase, the rail slides freely to allow adaptability, then locks into place to provide stability for the selected position, dynamically switching between these two operational modes.
Data Source
AI summary
A vehicle seating assembly includes a track assembly disposed on a vehicle floor. The track assembly includes a rail slidably disposed in a track and a positioning bracket fixedly coupled to the track. A lift mechanism is coupled to a pivot bracket disposed on the rail and is configured to rotate the seat frame between sitting and standing positions. A lever assembly is rotatably coupled to the lift mechanism, rotatable about a seat axis of rotation, and movable along the positioning bracket as the rail slides in the track. A release mechanism is operably coupled to the lift mechanism and the track assembly. The release mechanism may fix the rail relative to the track or release the rail from the track.