Buckle Device Coupling Member Load Alignment Suppresses Rotation
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Solution Overview
Problem
Buckle devices experience rotation moment issues at the coupling portion between the coupling member and intermediate member when the moving member is pulled toward its length direction leading end, causing instability and potential mechanical strength challenges.
Innovation Solution
The buckle device design includes a coupling member with a first coupling section fixed to the vehicle side support and a second coupling section where the intermediate member is retained, ensuring that the load direction on the first coupling section aligns with the load direction on the second coupling section, thereby suppressing rotation moment occurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the moving member is pulled toward its length direction leading end side, then the buckle is moved along the length direction, but rotation moment occurs at the coupling portion between the coupling member and intermediate member
Solution Approach 1:
The coupling member is divided into a first coupling section and a second coupling section, with the intermediate member disposed at an intermediate portion between these two sections. This segmentation allows the load directions at both coupling sections to be aligned along the same line, preventing rotation moment at the coupling portion while maintaining buckle movement functionality.
2Stability of the object's composition
If additional components or increased mechanical strength are used to prevent rotation moment, then coupling portion stability is improved, but device complexity and size increase
Solution Approach 1:
The first coupling section and second coupling section are merged into a single coupling member, with the intermediate member positioned between them. This integration allows the coupling member to simultaneously handle loads from both sections along the same direction, preventing rotation moment without requiring additional separate components or complex reinforcement structures.
Data Source
AI summary
In a buckle device, a pressing force, applied from wire ropes to an inside wall face of a wire guide groove of a wire guide, is along an imaginary line passing through a center of a cover plate first hole portion of a cover plate fixing tab of a cover plate and a center of a wire guide hole portion of the wire guide as viewed from the vehicle inside, similarly to a pressing force applied to a first fixing bolt that fixes the cover plate to a support plate, and these pressing forces are both oriented in the same direction. This enables rotation moment to be suppressed from occurring at the cover plate when the wire ropes are pulled toward their length direction leading end side.