Reusable Ball-Latch Release Mechanism for Re-Securing Joints
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Solution Overview
Problem
Existing releasable joint mechanisms, such as those used in spacecraft applications, are not reusable after releasing the releasable structure from the stationary structure, limiting their application in scenarios where re-securing is desirable for cost savings and other benefits.
Innovation Solution
A reusable release mechanism employing slidable release balls that can re-secure the releasable structure to the stationary structure, utilizing a bolt with an angular collar and a rotatable portion with cam indentation and rails to allow the balls to move between latched and unlatched positions, enabling repeated connection and disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional non-explosive actuator with a split washer and fusible link is used, then the releasable structure can be securely held and released, but the mechanism cannot be reused for re-securing the structure
Solution Approach 1:
The mechanism employs a rotatable portion that can rotate between locked and unlocked positions, dynamically changing the position of the release balls. This rotational movement allows the same mechanism to repeatedly perform both securing and releasing functions, enabling reusability without requiring complete replacement of the joint mechanism.
Solution Approach 2:
The release mechanism is designed to perform multiple functions: it can securely latch the bolt in place, release the bolt when needed, and then be reset to secure the bolt again. The same mechanism components (release balls, cam indentation, rails) are reused across multiple cycles of securing and releasing, making the mechanism universal and reusable rather than single-use.
2Adaptability or versatility
If a reusable mechanism with rotatable portion and cam indentation is employed, then the joint can be reused multiple times, but the device complexity increases
Solution Approach 1:
The mechanism is divided into distinct functional segments: the base portion with rails, the rotatable portion with cam indentation, and the release balls. This segmentation allows each component to perform its specific function independently while working together as a system, making the complexity manageable and the mechanism reusable.
Solution Approach 2:
The use of spherical release balls interacting with a cam indentation provides a simple yet effective mechanism for converting rotational motion into linear locking/unlocking motion. The curved cam surface naturally guides the balls between positions, achieving reusable functionality with relatively simple geometric forms rather than complex mechanical linkages.
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
Enables the reusable release mechanism to securely connect and disconnect the releasable structure from the stationary structure multiple times, enhancing cost-effectiveness and accessibility in applications where re-securing is necessary.
Implementation Method 1
a reusable release mechanism for releasably securing a releasable structure to a stationary structure, where the mechanism employs slidable release balls that can re-secure the releasable structure to the stationary structure
Data Source
AI summary
A release mechanism for releasably securing a releasable structure to a stationary structure, where the mechanism employs release balls that can re-secure the releasable structure to the stationary structure. The release mechanism includes a base portion having three rails extending radially outward from a center of the base portion, and a rotatable portion rotatably mounted to the base portion, where the rotatable portion has a cam indentation. The release balls are positioned between the base portion and the rotatable portion so that one of the release balls is ridable on each of the rails and all of the release balls are positioned within the cam indentation. The cam indentation is configured so that as the rotatable portion is rotated relative to the base portion the cam indentation causes and allows the release balls to move along the rails in unison with each other to hold and release the releasable structure.