Vehicle Seat Swivel Catch Hook for Bidirectional Rotation
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Solution Overview
Problem
Existing rotational devices for vehicle seats are limited in that they only allow rotation in one direction when in the basic position, which restricts their application and does not enhance crash safety effectively.
Innovation Solution
A rotational device with a catch hook that protrudes radially beyond the base component and seat part support, allowing bidirectional rotation and enhanced crash safety, featuring a U-shaped catch hook with a slide element to prevent noise and a locking mechanism with roller bearings for uniform pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tangential abutment is provided for the catch hook, then the rotational device can be restrained in the basic position, but the catch hook cannot rotate in both directions when connected to the seat part support
Solution Approach 1:
The patent introduces a tangential guide surface as an intermediary element between the catch hook and the base component. This guide surface allows the catch hook to move tangentially during rotation while maintaining proper engagement, enabling bidirectional rotation without compromising the restraining function in the basic position.
Solution Approach 2:
The patent makes the engagement between the catch hook and base component dynamic rather than static. The catch hook is designed to engage with the base component in a way that allows controlled movement during rotation, transitioning from a fixed restraint to a flexible engagement that accommodates bidirectional motion while maintaining safety.
2Adaptability or versatility
If the rotational device is designed for unidirectional rotation only, then the structure can be simplified, but the adaptability for different vehicle configurations is reduced
Solution Approach 1:
The patent designs the rotational device with universal applicability by enabling bidirectional rotation capability. The catch hook and base component are configured to work together in a symmetric manner, allowing the same device to be used for both driver and passenger seats, as well as for both right-hand drive and left-hand drive vehicle configurations.
3Reliability
If the catch hook engages tightly with the base component in the basic position, then crash safety is enhanced, but noise and vibration-induced disturbances increase
Solution Approach 1:
The patent introduces a slide element as an intermediary between the catch hook and the base component. This slide element reduces direct metal-to-metal contact during engagement and disengagement, thereby minimizing noise and vibration while maintaining the tight engagement necessary for crash safety when the rotational device is in the basic position.
Data Source
AI summary
A rotational device (10) for a vehicle seat includes a base element (20) and a seat part support (30) which can be rotated about a rotational axis (S) with respect to the base element (20). The rotational device (10) can be moved from a base position into a rotated position by rotating the seat part support (30) with respect to the base element (20). A catch hook (37) is provided on the base element (20) and/or on the seat part support (30). The catch hook protrudes in the radial direction over the base element (20) and/or over the seat part support (30).