Winding Fastener Mechanism for Detachable Tightening Control
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Solution Overview
Problem
Existing fastener devices cannot simultaneously detachably connect and tighten two parts, limiting their versatility in applications requiring both connection and adjustment.
Innovation Solution
A fastener device with a second fastener part featuring an actuating element and a winding element that allows for the winding up of a tension element, enabling both detachable connection and adjustable tightening through engagement and toothing mechanisms, along with magnetic assistance for secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fastener device uses a simple connection mechanism, then ease of operation is improved, but the ability to provide adjustable tightening is lost
Solution Approach 1:
The patent combines a fastening mechanism with a winding mechanism into a single integrated device. The second fastener part incorporates both connection and tightening functions, allowing the device to both detachably connect assemblies and provide adjustable tightening through the winding element that winds the tension element.
Solution Approach 2:
The fastener device is designed to perform multiple functions: it can detachably connect two assemblies together and simultaneously provide adjustable tightening of those assemblies relative to one another. This multi-functionality is achieved through the integrated fastening and winding mechanisms.
2Adaptability or versatility
If a fastener device integrates both connection and tightening functions, then adaptability is improved, but device complexity increases
Solution Approach 1:
The device is divided into distinct functional components: first and second fastener parts for connection, a winding element for tightening, and a tension element linking them. This segmentation allows each component to perform its specific function while maintaining overall system manageability.
Solution Approach 2:
The winding element is arranged on the actuating element of the second fastener part, with the tension element winding around the winding element. This nested arrangement consolidates multiple functions into a compact structure, reducing overall device complexity while maintaining functionality.
3Reliability
If the winding element is always engaged with the actuating element, then tightening reliability is improved, but ease of operation deteriorates due to inability to adjust independently
Solution Approach 1:
The engagement between the winding element and actuating element is made dynamic rather than fixed. The engagement means can transition between engaged and disengaged states, allowing the system to adapt its connectivity based on operational requirements. This enables both reliable tightening when engaged and independent adjustment when disengaged.
Solution Approach 2:
The engagement means are designed to automatically engage or disengage based on the relative positions and movements of the fastener parts. The system self-regulates the connection state between the winding element and actuating element, eliminating the need for manual intervention to switch between tightening and adjustment modes.
4Ease of manufacture
If the fastener parts use simple engagement means, then ease of manufacture is improved, but reliability of locking decreases
Solution Approach 1:
Magnetic elements are introduced as intermediary components between the fastener parts to enhance locking reliability. These magnetic elements provide additional holding force and ensure secure engagement without requiring complex mechanical interlocking structures, thus maintaining manufacturing simplicity while improving reliability.
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 device provides a reliable and versatile means to connect and tighten assemblies, allowing for easy detachment and adjustment, suitable for various applications including bags, shoes, and medical aids.
Implementation Method 1
The first toothing means and the second toothing means, in the closed position of the fastener device, are in engagement with one another such that the first fastener part and the second fastener part are held in positive locking fashion relative to one another along the winding direction
Implementation Method 2
both fastener parts (2, 3) each have at least one magnetic element (23, 33) which, during the closing of the fastener device, are situated opposite one another with magnetically attractive action in order to close the fastener device
Data Source
AI summary
A fastener device includes a first fastener part and a second fastener part which can be mounted on one another along a closing direction, are held against one another in a closed position, and are releasable from one another in order to open the fastener device. The second fastener part has an actuating element with a first engagement means and has a winding element which is arranged on the actuating element and which is rotatable in a winding direction in order to wind up a tension element and which has a second engagement means. The first and the second engagement means, in a release position, are not in engagement with one another, such that the winding element is rotatable relative to the actuating element, and can be placed in engagement with one another, such that, in an engagement position, the winding element is rotatable by means of the actuating element.