Seat Rail Lock Pin Guide for Floor Panel Clearance and Assembly
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Solution Overview
Problem
Conventional seat rail locking devices for vehicles, where the lock pin moves in a directly downward direction, often interfere with the floor panel, especially in electric vehicles where the floor space is used for battery mounting, leading to assembly challenges and improper locking.
Innovation Solution
A seat rail locking device that moves the lock pin in an upward direction, using a lock pin guide with a spring-backed structure and a track lever system, allowing the lock pin to be easily assembled and rotated, preventing interference with the floor panel and enabling flexible battery mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lock pin moves in a directly downward direction to lock the seat rail, then the locking function is achieved, but the floor panel is damaged and battery mounting is interfered with
Solution Approach 1:
The patent inverts the conventional locking direction by making the lock pin move upward instead of downward. The lock pin is configured to move upward along the guide groove to engage with the locking protrusion on the floor panel, thereby avoiding damage to the floor panel while achieving the same locking function.
Solution Approach 2:
The patent introduces a guide groove as an intermediary structure that guides the lock pin's upward movement. This guide groove mediates between the lock pin and the floor panel, ensuring the lock pin follows a predetermined path that prevents direct contact and damage to the floor panel.
2Device complexity
If the lock pin moves in a directly downward direction, then the locking structure is simple, but assembly is difficult and improper locking occurs
Solution Approach 1:
The guide groove acts as an intermediary that simplifies assembly by providing a predetermined path for the lock pin. The lock pin simply needs to follow the guide groove during assembly, making the assembly process easier and more reliable without significantly increasing structural complexity.
Solution Approach 2:
The guide groove is pre-formed in the support plate, establishing the movement path for the lock pin before assembly. This preliminary action ensures that during assembly, the lock pin automatically follows the correct trajectory, reducing assembly difficulty and preventing improper locking.
3Reliability
If the lock pin moves downward through the floor panel, then locking is achieved, but battery mounting space is reduced
Solution Approach 1:
The patent inverts the locking direction to upward movement, which eliminates the need for the lock pin to pass through the floor panel from above. This inversion preserves the floor panel integrity and maintains maximum space for battery mounting while achieving reliable locking through the upward engagement mechanism.
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 solution allows for interference-free battery mounting, improves assembly efficiency by simplifying the lock pin's movement, and ensures secure locking and unlocking of the seat rail without damaging the lock pin.
Implementation Method 1
a spring 23 inserted between a bottom surface of the support plate 21 and a circumferential part 22-1 of the lock pin 22 to be compressible
Data Source
AI summary
The present disclosure provides a seat rail locking device for a vehicle, which may apply a method of moving a lock pin in an upward direction to lock a seat rail by moving away from a conventional seat rail locking method of moving the lock pin in a directly downward direction to pass through a floor panel, thereby not causing the interference with the floor panel at all to flexibly apply a battery mounting structure to the floor panel, improving an assembling property as an operator may easily assemble a lock pin guide configured to guide the lock pin to move in upward and downward directions to a movable rail in only an insertion and rotation operation.