Bayonet Joint Ring Geometry for Tolerance-Compensating Locking
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Solution Overview
Problem
Bayonet joints face challenges in compensating for positional deviations between connectors and tubular bodies due to component tolerances, leading to unfavorable tolerance zones that can prevent joint production and increase costs.
Innovation Solution
A bayonet joint design featuring bayonet tabs and hooks with segmented contours on both the connector and tubular body, along with multiple internal and external bayonet contours on the bayonet ring, allowing for flexible axial positioning and compensation of positional deviations, ensuring a positive-locking connection despite tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If precise axial positioning is required for bayonet joint assembly, then connection security is improved, but manufacturing cost increases due to stringent tolerance requirements
Solution Approach 1:
The invention changes the geometric parameters of the bayonet contours, specifically designing the locking contour with a curved surface that allows for angular adjustment. This enables the connection to accommodate positional deviations within a tolerance range while maintaining secure locking, thereby reducing the need for stringent manufacturing tolerances and associated costs
Solution Approach 2:
The bayonet joint design incorporates a dynamic locking mechanism where the locking contour can rotate angularly relative to the insertion contour. This dynamic capability allows the joint to self-adjust to positional deviations during assembly, maintaining connection security without requiring precise pre-positioning or tight tolerances
2Stability of the object's composition
If rigid arrangement of connector and tubular body is maintained, then structural stability is improved, but adaptability to positional deviations deteriorates
Solution Approach 1:
The invention introduces a dynamic element to the otherwise rigid structure by enabling angular rotation of the locking contour relative to the insertion contour. This allows the rigid connector and tubular body to adapt to positional deviations through the rotational degree of freedom in the bayonet joint, maintaining structural stability while gaining adaptability
Solution Approach 2:
The bayonet joint is segmented into distinct functional contours: an insertion contour for initial engagement and a locking contour for final securing. This segmentation allows the insertion phase to accommodate deviations while the locking phase establishes stable connection, separating the adaptability function from the stability function
3Adaptability or versatility
If multiple internal bayonet contours are provided on the bayonet ring, then compensation for positional deviations is improved, but device complexity increases
Solution Approach 1:
The bayonet ring is segmented with multiple internal bayonet contours at different angular positions. Each contour can engage with the external bayonet contour of the tubular body independently, providing multiple possible locking positions that compensate for positional deviations. This segmentation approach achieves adaptability while keeping each individual contour relatively simple
Data Source
AI summary
A bayonet joint having a connector with bayonet tabs arranged on the exterior of the connector, a tubular body with at least one external bayonet contour arranged on the exterior of the tubular body and a bayonet ring with inward facing bayonet hooks and at least one inward facing internal bayonet contour. In an assembled state of the bayonet joint, the connector, tubular body and bayonet ring are in a locking orientation relative to one another. The bayonet ring surrounds an outside of the connector and the tubular body in the radial direction and secures the connector and the tubular body against removal from the bayonet ring.