Bearing Retention Assembly With Visual Alignment Indication
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Solution Overview
Problem
Existing devices for holding bearing members in aircraft/helicopter propshafts lack visual confirmation of proper engagement and are prone to misalignment, leading to potential damage.
Innovation Solution
A bearing holding device with a bolt-shaped configuration, including a first part for engagement with the chassis, a second part for slidably supporting the bearing member, and an abutment member to prevent separation, along with a spring for biasing and an indicator mechanism for visual alignment confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a threaded bolt is used to hold the bearing member, then the bearing member can be secured to the chassis, but visual confirmation of proper engagement is not possible and misalignment can occur causing damage
Solution Approach 1:
An indicator member is introduced as an intermediary element that visually communicates the engagement status of the bearing member. The indicator member includes a visible portion that can be seen through an opening in the chassis, providing real-time feedback on whether the bearing member is properly aligned and secured, thus resolving the detection difficulty without compromising the secure engagement function
Solution Approach 2:
The indicator mechanism provides visual feedback about the engagement state of the bearing member. When the bearing member is properly positioned, the indicator member aligns in a specific visible position; when misaligned, the indicator shows a different position. This feedback loop allows operators to verify proper installation and prevents damage from misalignment
2Productivity
If the bolt structure is simplified for ease of installation, then installation is faster, but the ability to prevent separation and ensure proper alignment is reduced
Solution Approach 1:
The indicator member is integrated into the bolt structure itself, combining the fastening function with the indication function in a single component. This merging allows the device to maintain simplicity and installation speed while adding the reliability feature of visual confirmation and separation prevention, as the indicator is built-in rather than added as a separate complex assembly
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
Ensures proper alignment and secure engagement of the bearing member, preventing damage by allowing visual verification of alignment through the indicator mechanism and maintaining secure attachment with the chassis.
Implementation Method 1
The device includes biasing means for biasing the first end of the second part away from the first part
Data Source
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AI summary
A device (10) for holding a bearing member relative to a fixed body, including: a first part (12) having an formation for engagement with a corresponding formation on a fixed body to hold the first part relative to the fixed body, and a receiving formation (13) for receiving and slidably supporting a generally elongate second part (14), wherein a first end (15) of the second part is configured for engagement with a part of a bearing member to hold the bearing member relative to the fixed body, and wherein a second, opposite, end (16) of the second part supports an abutment member which prevents the first and second parts separating from each other, wherein the device includes biasing means (30) for biasing the first end of the second part away from the first part.