Elastic Roller Support with D-Shaped Grooves
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Solution Overview
Problem
Conventional roller support mechanisms using sliding bearings require precise fit tolerance and high processing accuracy, leading to increased costs and complex attachment processes.
Innovation Solution
A roller support mechanism comprising a pair of support plates with concave groove portions and sliding bearing portions, where the sliding bearing portions are pressed into the concave grooves to securely attach the rotation shaft of a roller, allowing for easy and reliable attachment with reduced complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sliding bearings are used with precise fit tolerance and high processing accuracy, then the reliability of roller support is improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
The support plate is segmented into an integrated structure where the concave groove portion is directly formed as part of the support plate body. This integration eliminates the need for separate bearing housings or complex mounting structures, thereby reducing device complexity while maintaining support reliability through the unified design.
Solution Approach 2:
The invention changes the geometric parameters of the concave groove portion, specifically designing it with a D-shaped cross-section comprising two arc rims and a straight line rim. This specific geometric configuration allows the sliding bearing portion to be securely attached with reduced fit tolerance requirements, improving reliability while simplifying the manufacturing process.
2Manufacturing precision
If sliding bearings are used with precise fit tolerance, then the support accuracy is improved, but the manufacturing cost increases
Solution Approach 1:
The D-shaped concave groove with its specific geometric parameters (two arc rims and a straight line rim) is designed to work with the sliding bearing portion's geometry, allowing for relaxed fit tolerance specifications. This parameter optimization maintains support accuracy while significantly reducing manufacturing cost by eliminating the need for high-precision machining operations.
Solution Approach 2:
The integrated support plate structure with the concave groove portion serves its own function of supporting the sliding bearing, eliminating the need for separate precision-machined bearing housings. The design is self-sufficient, providing both structural support and precise bearing positioning through its inherent geometry, thereby reducing manufacturing cost.
3Stability of the object's composition
If conventional sliding bearing attachment methods are used, then the support stability is maintained, but the attachment process becomes complex
Solution Approach 1:
The support system is segmented into the support plate with integrated concave groove and the sliding bearing portion, where the groove geometry (D-shaped with arc and straight portions) provides inherent stability. This segmentation allows for simple attachment by pressing the bearing into the groove, maintaining support stability while eliminating complex attachment procedures.
Solution Approach 2:
The concave groove portion is pre-formed as an integral part of the support plate during plate manufacturing, rather than requiring subsequent complex assembly operations. This preliminary action of creating the receiving geometry in advance ensures support stability is built-in from the start, while the actual bearing attachment becomes a simple pressing operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables straightforward and cost-effective attachment of sliding bearing portions, enhancing the reliability and reducing the complexity of the attachment process while maintaining secure and unrotatable support for the rotation shaft.
Implementation Method 1
A pair of support plates 73, 73 which are formed from an elastic material are disposed to face each other
Data Source
AI summary
A roller support mechanism includes a pair of support plates, concave groove portions, and sliding bearing portions. The support plates are formed from an elastic material and disposed to face each other. The concave groove portions are formed in the support plates and each include an opening portion, two arc rims, and a straight line rim. The arc rims extend in a groove depth direction of the concave groove portion from opposite ends of the opening portion. The straight line rim extends straightly and connects extention ends of the arc rims. The sliding bearing portions have bearing holes in which a rotation shaft of a roller member is inserted. In a state where the rotation shaft is inserted in the bearing holes, the sliding bearing portions are pressed into the concave groove portions so as to be in close contact with their inner circumferential surfaces and unrotatably attached to them.