Vehicle Seat Slide Rail With Selective Runner Coupling
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Solution Overview
Problem
Existing slide rails for vehicle seats face issues with limited elongation length, leading to obstruction, increased vibrations, rotational movements, and potential contact between profiles, which affect reliability and perceived quality.
Innovation Solution
A slide rail design with a runner that is selectively connected to either a first or second profile in translation, featuring a coupling device with interchangeable states and stops to manage movement, reducing vibrations and rotational movements, and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the profile length is limited to avoid obstructing the floor, then the floor space is preserved, but the distance over which the second profile is held relative to the first profile is reduced
Solution Approach 1:
The profile system is segmented into a first profile fixed to the floor and a second profile fixed to the seat, with a runner selectively connectable to either profile. This segmentation allows the profiles to be shorter individually while maintaining sufficient total support distance through the selective coupling mechanism.
Solution Approach 2:
The coupling device enables dynamic reconfiguration of the runner's connection between the first and second profiles based on the relative positions of the seat and floor. This dynamic adaptation allows the system to maintain optimal support distance while accommodating varying spatial constraints.
2Stability of the object's composition
If the runner is permanently fixed to one profile, then the connection is stable, but the distance over which the second profile is held relative to the first profile is reduced
Solution Approach 1:
The coupling device allows the runner to dynamically switch between being connected to the first profile and being connected to the second profile, maintaining stable connection at any given moment while enabling the profiles to be positioned optimally to maximize support distance.
3Object-affected harmful factors
If the profiles are longer to increase support distance, then the vibration reduction is improved, but the floor obstruction increases
Solution Approach 1:
The system segments the support function across two separate profiles connected through a selectively couplable runner, allowing sufficient total support distance for vibration reduction while keeping individual profile lengths short enough to avoid floor obstruction.
4Length of stationary object
If the runner is selectively connected to different profiles, then the support distance is increased, but the device complexity increases
Solution Approach 1:
The coupling device is designed as a universal mechanism that can connect the runner to either the first profile or the second profile, performing multiple functions with a single device structure, thereby managing complexity while enabling selective connection.
Data Source
AI summary
A slide rail for a motor vehicle seat, comprises a first profile, a second profile and an interior space which extends in a longitudinal direction, the interior space extending between the first profile and the second profile, the second profile being movable relative to the first profile, rolling elements which are arranged in the interior space and configured to guide the movement of the second profile relative to the first profile in the longitudinal direction, and a runner which is arranged in the interior space and holds the second profile relative to the first profile in a support direction perpendicular to the longitudinal direction, wherein the runner is selectively connected to the first profile or to the second profile.