Vehicle Slide Rail Memory Mechanism for Stable Seat Positioning
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Solution Overview
Problem
The existing vehicle slide rail devices face instability in maintaining the default seat position due to potential misalignment of the memory member when the release lever operation deviates from the locked position, leading to inconsistent seat adjustment and storage.
Innovation Solution
A vehicle slide rail device with a memory mechanism that includes a memory member defining the default seat position, a release operation mechanism to remove the memory member from its default position by engaging with a concave portion, and a memory operation mechanism to release the lock mechanism while maintaining the memory member in the default position, ensuring stable seat adjustment and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the release lever operation is performed at a position deviated from the locked position, then the seat position can be adjusted, but the memory member may become misaligned and fail to return to the default position correctly
Solution Approach 1:
A guide groove is introduced as an intermediary structure between the release lever and the memory member. The guide groove constrains the movement path of the memory member, ensuring it follows a precise trajectory during release lever operation. This intermediary structure prevents misalignment even when the release lever is operated at positions deviated from the locked position, thereby maintaining both ease of operation and reliability of the memory mechanism.
Solution Approach 2:
The guide groove is designed in advance to anticipate and compensate for potential operational deviations. By pre-establishing the correct movement path for the memory member, the system cushions against the harmful effect of misalignment before it can occur. This preparatory structural arrangement ensures that regardless of where the release lever is pulled from, the memory member will always return to the correct default position.
2Reliability
If the memory member is engaged to define the default position, then the seat can return to the original position, but the structure becomes more complex with additional engagement mechanisms
Solution Approach 1:
The guide groove structure is designed to simultaneously perform multiple functions: it guides the memory member during operation, provides the engagement path for defining the default position, and ensures proper alignment during return. By merging these functions into a single integrated structure rather than using separate components, the patent achieves reliable default position maintenance while minimizing structural complexity.
Solution Approach 2:
The guide groove serves multiple purposes within the memory mechanism: it acts as a movement guide, an engagement track, and an alignment reference. This multi-functional design allows the system to achieve complex operational requirements (maintaining default position, allowing seat return, preventing misalignment) without adding proportional complexity to the structure.
Data Source
AI summary
A vehicle slide rail device including a memory member defining a default seat position wherein, before operation of a release operation mechanism, the release operation mechanism is inserted into a concave portion formed in the memory member and recessed in a direction substantially perpendicular to a sliding direction and the release operation mechanism is in an engagement state of being engaged integrally with the memory member in the sliding direction, wherein, when the release operation mechanism is operated, the release operation mechanism pushes the concave portion in a direction substantially perpendicular to the sliding direction and removes the memory member from a state of defining the default seat position, and wherein, when a memory operation mechanism is operated, the memory operation mechanism removes the release operation mechanism from an inside of the concave portion and releases the release operation mechanism from the engagement state with the memory member.