Vehicle Seat Locking Apparatus Bi-Directional Latch
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Solution Overview
Problem
Existing vehicle seat locking systems require multiple locking devices for both seating and tip-up modes, leading to increased complexity, weight, and cost.
Innovation Solution
A bi-directionally lockable latch is used to lock the cushion part in both seating and tip-up modes, reducing the number of components, weight, and cost by integrating the locking mechanism into a single component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple locking devices are used for seating mode and tip-up mode, then the cushion part can be securely locked in both modes, but the number of components, weight, and cost increase
Solution Approach 1:
The latch is designed to perform multiple locking functions by engaging with different positions on the slot hole. A single latch mechanism can lock the cushion part in both the seating mode (first position) and tip-up mode (second position), eliminating the need for separate locking devices for each mode while maintaining secure locking reliability
Solution Approach 2:
The patent combines multiple locking functions into a single integrated latch mechanism. The latch structure merges the functionality of what would traditionally require separate locking devices, allowing one component to provide locking engagement at multiple positions along the slot hole, thereby reducing overall system complexity
2Reliability
If multiple locking devices are used for seating mode and tip-up mode, then the cushion part can be securely locked in both modes, but the weight increases
Solution Approach 1:
The latch serves multiple locking purposes simultaneously by engaging with different positions on the slot hole. This multi-functional design means that instead of having separate locking devices for seating and tip-up modes, one latch provides all necessary locking functions, directly reducing the weight of the locking apparatus while maintaining reliable locking in both modes
Solution Approach 2:
By merging multiple locking functions into a single latch mechanism, the total weight of the locking apparatus is reduced. The integrated design eliminates redundant components that would otherwise be needed to provide separate locking capabilities for different cushion part positions
3Reliability
If multiple locking devices are used for seating mode and tip-up mode, then the cushion part can be securely locked in both modes, but the cost increases
Solution Approach 1:
The latch is designed as a universal component that handles both seating mode and tip-up mode locking requirements. This multi-functionality reduces the total number of parts that need to be manufactured, assembled, and quality-checked, thereby lowering manufacturing costs while ensuring reliable locking in both operational modes
Solution Approach 2:
The patent merges multiple locking functions into a single latch structure, which simplifies the manufacturing process. Instead of producing and assembling multiple separate locking devices, manufacturers can produce a single integrated latch component, reducing material costs, manufacturing complexity, and assembly operations
Data Source
AI summary
An embodiment locking apparatus for a seat includes a side frame rotatably coupled to a rear end of a cushion part and having an arc-shaped slot hole disposed thereon along a turning radius of the cushion part, a locking protrusion disposed on the cushion part, fitted into the slot hole, and configured to move along the slot hole in a state in which the cushion part is rotated to be changed to a seating mode or a tip-up mode, and a latch rotatably coupled to the side frame and configured to be locked and fixed by the locking protrusion in a state in which the cushion part is in the seating mode or the tip-up mode.