Vehicle Seat-Rail Locking Lever Internal Rotation Stopper
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Solution Overview
Problem
Conventional seat-rail locking apparatuses face challenges in assembly convenience and space utilization due to the protrusion of components, which complicates the assembly process and reduces the compactness of the seat-rail design.
Innovation Solution
The proposed solution involves a fixing bracket and an unlock lever with a rotation stopper, where the unlock lever is designed to rotate within the seat-rail, allowing the locking pin to be assembled internally, reducing external exposure and improving assembly convenience by regulating excessive rotation and enhancing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking lever is fitted to the pin member with the end portion located above the upper rail, then the locking function is achieved, but the protrusion of the pin member increases and assembly convenience deteriorates
Solution Approach 1:
The patent repositions the locking lever operation from an external location (above the upper rail) to an internal location (inside the seat-rail structure). This dimensional relocation allows the lever to operate within the existing structural space, eliminating the need for external protrusion and simplifying assembly to a single-step insertion process.
2Volume of moving object
If the locking lever operation is performed inside the seat-rail, then space utilization is improved, but the locking pin and locking lever must be separately assembled reducing assembly convenience
Solution Approach 1:
The patent merges the locking pin and locking lever into a single integrated assembly unit. This combination allows both components to be inserted and assembled simultaneously in one operation, eliminating the need for separate assembly steps while maintaining the internal operation configuration that improves space utilization.
3Ease of operation
If the pin member protrudes to the upper side of the upper rail, then the locking lever can be fitted, but the exposure of components increases and compactness deteriorates
Solution Approach 1:
The patent nests the locking lever and pin member within the existing seat-rail structure, utilizing the internal cavity space. This nesting approach eliminates external protrusion and component exposure, achieving a compact integrated design where all locking components are contained within the rail structure boundaries.
Data Source
AI summary
The present disclosure provides an apparatus for locking a vehicle seat-rail that improves the assembly convenience of a lever assembly and enhances space utilization of the seat-rail upper portion, and an assembling method. The apparatus includes a fixing bracket that is fixed to an outer surface of a moving rail; and an unlock lever that is rotatably coupled to the fixing bracket at an interruption. In particular, a rotation stopper is formed to protrude from a side surface of the unlock lever, and a fixing stopper is provided in a rotation path of the rotation stopper to regulate the excessive rotation of the unlock lever in one direction at the time of rotation of the unlock lever.