Hoisting Device Clasp with Reducing Recess for Single-Movement Attachment
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Solution Overview
Problem
The existing hoisting devices for persons require two separate movements to attach the clasp to the lever arm, making it hazardous and difficult to use safely, as the clasp can be easily undone before being secured.
Innovation Solution
The clasp is designed with reducing means that allow it to be attached in a single movement by reducing the recess size to fit the button, using retaining elements that can be moved between normal and reducing positions, ensuring secure attachment and disconnection only with user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the clasp is designed with a large opening for easy button insertion, then the ease of operation is improved, but the reliability deteriorates because the button can be easily removed accidentally
Solution Approach 1:
The clasp opening is segmented into two distinct parts: a large opening for easy button insertion and a small retention opening for secure attachment. This segmentation allows the clasp to provide both easy operation and reliable retention by dividing the opening function into two separate structural elements
Solution Approach 2:
The clasp incorporates a movable retaining element that can shift between blocking and non-blocking positions. This dynamic mechanism allows the retaining element to automatically block the large opening after button insertion, preventing accidental removal while maintaining ease of initial attachment
2Reliability
If the clasp requires two separate movements for attachment, then the reliability of secure attachment is improved, but the ease of operation deteriorates due to complexity
Solution Approach 1:
The clasp design merges the insertion function and retention function into a single continuous movement. The button passes through the large opening and is automatically retained by the blocking mechanism in one uninterrupted action, eliminating the need for separate insertion and securing movements
Solution Approach 2:
The retaining element is pre-positioned to automatically engage and block the large opening once the button is inserted. This preliminary action of the retaining mechanism ensures secure attachment occurs automatically during the insertion process itself, without requiring a separate securing 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
This design enhances safety and ease of use by allowing a single directional attachment and secure retention of the button, preventing accidental disconnection and improving the stability of the hoisting device.
Implementation Method 1
The at least one retaining element is preferably attached to a spring that is arranged for pushing the at least one retaining element away from the normal position towards the reducing position
Data Source
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AI summary
The invention relates to a hoisting device for persons, comprising a lever arm provided with a button having an enlargement, fastening means for fastening person-carrying means to the lever arm in a detachable fashion, whereby the carrying means are provided with straps, the ends of which are each attached to a clasp, whereby the clasps can each be attached to the lever button and whereby the clasps each have a recess, the smallest dimension of which is larger than the largest measurement of the enlargement of the button.