Collar Bearing Joint Assembly Without Post-Insertion Bushing Folding
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Solution Overview
Problem
Existing joint arrangements for connecting components, such as those in the automobile sector, face challenges with the quality of the bearing and sliding surface due to the need for folding over metallic bushing edges and the inability of plastic bushings to maintain dimensional stability, leading to suboptimal performance and increased costs.
Innovation Solution
A joint arrangement featuring a collar bearing joint bushing with a stop disk element and a multi-step joint pin, where the stop disk element is pre-assembled on the joint pin, allowing for easy insertion and secure attachment to the collar bearing bushing, ensuring good bearing and sliding properties without the need for folding, and using plastic or thin-walled metal materials for cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metallic sliding bearing bushings are used, then the joint arrangement provides good bearing properties, but the free bushing edge must be folded over after insertion which complicates the manufacturing process and reduces productivity
Solution Approach 1:
The bushing edge is pre-folded during the bushing manufacturing process before insertion into the component. This preliminary action eliminates the need for post-insertion folding operations, thereby maintaining good bearing properties while significantly increasing manufacturing productivity and reducing assembly complexity
2Ease of manufacture
If plastic sliding bearing bushings are used, then the manufacturing process is simplified and costs are reduced, but the bushings cannot be reshaped in a dimensionally stable manner to ensure captive securing
Solution Approach 1:
The bushing edge is pre-folded during manufacturing to create an interference fit with the component opening. This preliminary shaping action ensures that plastic bushings maintain dimensional stability and achieve captive securing without requiring post-insertion reshaping operations
Solution Approach 2:
The bushing geometry is modified during manufacturing by folding the edge to create a specific shape that provides mechanical interlocking. This parameter change in the bushing structure enables plastic materials to achieve reliable captive securing while maintaining manufacturing simplicity and cost-effectiveness
3Reliability
If the bushing edge is folded over after insertion, then the joint arrangement achieves secure mounting, but the quality of the bearing and sliding surface depends on the folding process which introduces variability and potential defects
Solution Approach 1:
The bushing edge is pre-folded during the bushing manufacturing process under controlled conditions, ensuring consistent geometry and high-quality bearing surfaces before insertion. This eliminates variability introduced by post-insertion folding operations and ensures reliable mounting security
Data Source
AI summary
A joint arrangement between at least one first and second component, preferably sheetlike metal component, which has in each case a top and bottom side including a joint bushing which is received in a first opening of the first component, and a joint pin which is led through the joint bushing and which has a pin head, wherein that pin section which is situated opposite the pin head and which protrudes out of the joint bushing is fastenable to the second component preferably by means of a rivet connection. It is particularly advantageous for a stop disk element to be received between the pin head and the top side of the first component, and for the joint bushing to be formed as a collar bearing with a bushing section received in the first opening and a ring-shaped collar section adjoining said bushing section, wherein the ring-shaped collar section bears against the bottom side of the first component. The invention also relates to a prefabricated component and to a method for producing such a prefabricated component of a joint arrangement.