Coupling Bushing Angular Indexing With Separate Axial Securing
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Solution Overview
Problem
Existing coupling bushings with four angular positions in the circumferential direction are insufficient for flexibility and variability, limited by the size and fragility of latching elements for axial securing.
Innovation Solution
Decouple the axially secured state from the tangential securing by replacing latching elements with a separate securing part, allowing for a larger number of small angle-adjusting elements, enabling multiple angular positions such as 45°, 36°, or 30°, and providing a compact, robust connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If latching elements are used for axial securing, then axial securing is achieved, but the number of tangential angular positions is limited due to the size and fragility of the latching elements
Solution Approach 1:
The invention separates the axial securing function from the tangential angle-adjusting function. The latching element is dedicated solely to axial securing, while separate angle-adjusting elements (such as positioning lugs or circumferential positioning elements) handle tangential positioning. This functional segmentation allows each element to be optimized independently, enabling multiple tangential angular positions without compromising axial securing reliability.
Solution Approach 2:
The invention extracts the tangential angle-adjusting function from the latching element and implements it through separate angle-adjusting elements. This extraction allows the latching element to be smaller and more robust while enabling the addition of multiple angle positions through dedicated positioning features such as circumferential grooves, positioning lugs, or indexing mechanisms.
2Adaptability or versatility
If the number of tangential angular positions is increased, then product variability and flexibility are improved, but the latching elements become larger and more fragile
Solution Approach 1:
By segmenting the securing system into dedicated axial latching elements and separate tangential angle-adjusting elements, the invention allows multiple angle positions to be implemented without increasing the size or complexity of the latching elements themselves. The angle-adjusting elements can be designed as lightweight positioning features such as circumferential grooves, indexing lugs, or detent mechanisms that do not compromise latching element strength.
3Device complexity
If latching arms are used for both axial securing and angle adjustment, then device complexity is reduced, but the latching arms become relatively long and problematic
Solution Approach 1:
The invention divides the securing system into two independent functional components: compact latching arms for axial securing and separate angle-adjusting elements for tangential positioning. This segmentation eliminates the need for long, multi-functional latching arms, allowing each component to be optimized for its specific function with appropriate size and geometry.
Solution Approach 2:
The invention extracts the angle-adjusting function from the latching arm and implements it through separate angle-adjusting elements such as circumferential grooves, positioning lugs, or indexing mechanisms. This extraction allows the latching arm to be shortened and optimized purely for axial securing, improving its mechanical strength and reliability.
Data Source
AI summary
A coupling bushing having a bushing body and a retainer. The bushing body includes a head portion and a sealing part. The head portion and the sealing part are manufactured separately from each other and are connected to each other at an angular position in a circumferential direction via a joint. The coupling bushing comprises a securing part for connecting the head part and the sealing part. The securing part defines an axially locked state in which the head part and the sealing part are axially locked to one another by the securing part. The coupling bushing is designed such that the establishment of the axially secured state is decoupled spatially and/or temporally from a tangential securing of the connection between the head part and the sealing part.