Wedge Slider Return Plug With Rotation Stop Against Unscrewing
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Solution Overview
Problem
Existing slider arrangements face issues with attachment instability due to unscrewing of screw plugs during operation, leading to operational disturbances, and existing solutions are not easily adaptable for wedge slider mechanisms without compromising safety and maintenance.
Innovation Solution
A wedge drive tool with a screw plug featuring rotation prevention means, such as projections or bosses, to limit the rotation angle to a maximum acceptable value, and dual mounting positions to ensure secure attachment, preventing unscrewing and enhancing operational stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a screw plug is used to attach the return device, then the attachment can be easily installed and removed for maintenance, but the screw plug may accidentally unscrew during operation due to shocks and vibrations
Solution Approach 1:
The screw plug incorporates asymmetric rotation prevention means (protrusions or bosses) that engage with corresponding recesses in the slider arrangement. This asymmetric geometry prevents the screw plug from rotating beyond a maximum acceptable angle while maintaining ease of installation and removal for maintenance purposes.
Solution Approach 2:
The rotation prevention means act as an intermediary mechanism between the screw plug and the slider arrangement. These protrusions or bosses engage with complementary features in the mounting structure to prevent unscrewing during operation while allowing controlled installation and maintenance removal.
2Reliability
If rotation prevention means are added to the screw plug, then the attachment stability is improved, but the device complexity increases
Solution Approach 1:
The rotation prevention function is segmented into discrete protrusions or bosses on the screw plug, rather than requiring a completely redesigned fastening system. This segmentation allows the screw plug to maintain its basic function while adding targeted rotational prevention features.
Solution Approach 2:
The rotation prevention means are implemented as localized protrusions or bosses at specific positions on the screw plug, rather than requiring complex structural changes throughout the entire screw plug design. This localized approach minimizes overall device complexity while achieving the reliability improvement.
Data Source
AI summary
A slider arrangement (1) has a wedge drive tool with a slider upper portion (10) and a slider lower portion (20) which, due to a relative movement with respect to the slider upper portion (10), can be displaced along guides (30) from an initial position into a working position and vice versa. At least one return device (40) is provided in order to bring about the initial position of the slider upper portion (10) and slider lower portion (20), wherein the return device (40) has a screw plug (50) at the end in order to attach the return device (40) in a recess (11) of the slider arrangement (1). The screw plug (50) can have one or at least two rotation prevention part(s) (51) designed to prevent a rotation of the screw plug (50) beyond a maximum acceptable rotation angle α.