Rotary Unit Base Plate Hook Attachment for Vehicle Seat Stability
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Solution Overview
Problem
Existing rotating devices for vehicle seats lack sufficient stability, particularly in crash tests, as they primarily rely on attachment to longitudinal beams without effectively utilizing crossbars for force distribution.
Innovation Solution
A hook-shaped hanging strap is integrated into the base plate to grip under a transverse beam of the vehicle seat frame, providing additional support and force transmission to the crossbar, thereby enhancing rigidity and reducing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the base plate is attached only to longitudinal beams by screwing, then the attachment is simple, but the stability and rigidity are insufficient
Solution Approach 1:
The hanging strap extends the attachment from a single-plane screw connection to a multi-dimensional configuration by reaching upward to engage the crossbar, adding vertical dimension to the attachment geometry and creating rigid triangulation
Solution Approach 2:
The attachment system is divided into two independent connection paths: screw connections to longitudinal beams and the hanging strap connection to the crossbar, allowing each segment to contribute differently to overall stability
2Stability of the object's composition
If more screws are used to attach the base plate, then the stability improves, but the device complexity and assembly time increase
Solution Approach 1:
The hanging strap acts as an intermediary element that transfers loads between the base plate and the crossbar, reducing the burden on screw connections and allowing fewer screws to achieve the same overall stability
3Volume of moving object
If the base plate size is reduced, then the device becomes more compact, but the load capacity decreases
Solution Approach 1:
The hanging strap creates a three-dimensional load path that bypasses the limitations of base plate area, allowing compact base plates to achieve high load capacity through spatial triangulation with the crossbar
Data Source
Figure 1~4
Figure 5
AI summary
A device for attaching a rotating unit (7) to a vehicle seat frame (4) is proposed, consisting of a base plate (6) for connection to the vehicle seat frame (4), on which the rotating unit (7) can be arranged. According to the invention, a hook-shaped mounting tab (14) is provided on the base plate (6), which is designed to engage a cross member (13) on a vehicle seat frame (4) in the assembled state.