Detent Fitting With Segmented Guide And Bearing Elements
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Solution Overview
Problem
Existing detent fittings for vehicle parts fail to safely absorb loads during accidents, risking sudden displacement and injury due to inadequate latching mechanisms.
Innovation Solution
The design incorporates separate guide and bearing elements on the first fitting part, with guide elements having a smaller height for robust force absorption and bearing elements having a larger height for supportive surface pressure, allowing for functional separation and adaptation to strength requirements, and an additional toothing for enhanced latching during high loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate guide elements and bearing elements are provided with different heights, then the latching reliability under accident loads is improved, but the device complexity increases
Solution Approach 1:
The first fitting part is segmented into functionally distinct guide elements and bearing elements with different heights. The guide elements (with smaller height) guide the locking bolts, while the bearing elements (with larger height) support the first fitting part on the second fitting part. This segmentation allows each element to be optimized for its specific function, improving overall latching reliability under accident loads.
Solution Approach 2:
Different regions of the first fitting part are given different local qualities through the varying heights of guide and bearing elements. The bearing elements have larger height to provide sufficient support surface area and distribute loads, while the guide elements have smaller height appropriate for their guidance function. This local differentiation optimizes the structural response to accident loads.
2Strength
If guide elements and bearing elements have different heights adapted to strength requirements, then the force absorption capability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The height parameter of the guide and bearing elements is changed and differentiated to match the strength requirements of each function. The bearing elements have larger height to provide adequate support surface area for load distribution, while guide elements have smaller height suitable for their guidance function. This parameter differentiation optimizes force absorption capability while maintaining manufacturability.
3Reliability
If additional latching mechanisms are provided for high load conditions, then the safety under accident loads is improved, but the ease of manufacture decreases
Solution Approach 1:
The guide elements are pre-configured with toothings that can engage with the toothing of the second fitting part in advance, creating an additional latching mechanism. Under normal operation, this engagement is not active, but under accident loads, the guide elements can deform or shift to engage the toothings, providing preliminary prepared safety engagement without requiring separate additional components.
Solution Approach 2:
The guide elements serve dual functions: guiding the locking bolts during normal operation and providing additional latching through toothing engagement under accident loads. This multi-functionality eliminates the need for separate dedicated accident-latching components, maintaining ease of manufacture while improving safety under extreme conditions.
Data Source
AI summary
A detent fitting for latching two vehicle parts is provided. The detent fitting comprising a first fitting part, a second fitting part rotatably arranged about an axis of rotation relative to the first fitting part, at least one locking bolt shiftably arranged on the first fitting part, which is formed and provided to be brought in engagement with a toothing of the second fitting part for latching the first fitting part and the second fitting part and to be brought out of engagement with the toothing of the second fitting part for releasing the latching, at least one guide element arranged on the first fitting part for guiding the at least one locking bolt, and at least one bearing element arranged on the first fitting part and different from the at least one guide element, which for supporting the first fitting part on the second fitting part slidingly cooperates with the second fitting part.