Seat Rail Track Lever Assembly With Internal Holder Hinge
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Solution Overview
Problem
Conventional seat rail systems face issues with the rear seat passenger's foot getting caught, leading to unintended lock release, and require additional parts to prevent this, increasing complexity and cost.
Innovation Solution
The track lever assembly structure incorporates a holder hinge-coupled to the inside of the moving rail, changing the interlocking operation method to minimize external exposure and reduce the number and weight of parts, thereby simplifying assembly and preventing foot catch issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the track lever and locking assembly are directly exposed to the outside from the top of the moving rail, then the interlocking operation is simple and accessible, but the rear seat passenger's foot can be caught causing unintended lock release
Solution Approach 1:
The track lever assembly is nested within the moving rail structure. The holder is hinge-coupled to the inside of the moving rail, and the track lever is assembled to the holder, creating a nested configuration where the operational components are housed within the rail rather than exposed externally. This eliminates the foot catch risk while maintaining operational accessibility through the rail's interior mechanism.
2Reliability
If additional prevention structures are installed to prevent foot catch, then the lock release problem is solved, but the number and weight of parts increase
Solution Approach 1:
The harmful function of external exposure is extracted and removed from the system. By reconfiguring the track lever assembly to be hinge-coupled inside the moving rail rather than exposed externally, the patent eliminates the root cause of foot catch problems without requiring additional prevention structures. This extraction of the problematic external exposure feature solves the reliability issue while reducing parts complexity.
3Reliability
If multiple parts are used for interlocking operation between track lever and locking assembly, then the interlocking function is robust, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The holder serves as a combined component that integrates multiple functions: it is hinge-coupled to the moving rail, provides an assembly position for the track lever, and enables the interlocking operation with the locking assembly. By merging these functions into a single holder component rather than using separate parts for each function, the patent reduces assembly complexity and manufacturing cost while maintaining robust interlocking functionality.
Data Source
AI summary
The present disclosure relates to a track lever assembly structure of a seat, which is capable of preventing in advance a lock release phenomenon due to a problem that a rear seat passenger's foot is caught by causing an assembly position between a track lever and a locking assembly to be set within the seat rail, and of changing an assembly structure for interlocking operation between the track lever and the locking assembly into a fastening structure having an interlocking operation method using a holder hinge-coupled to the inside of a moving rail, thereby minimizing the number and weight of related parts and simplifying an assembly process.