Magnetic Closure Mechanism That Prevents Snap-Back Reclosing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing closure devices often snap shut inadvertently after opening, making them difficult to actuate and unpleasant to use due to the magnetic attraction causing immediate re-closure.
Innovation Solution
Incorporating blocking means to prevent the second closure part from moving back against the opening direction, combined with magnetic and mechanical mechanisms to attenuate magnetic attraction and provide a mechanical latch, ensuring safe separation and automatic re-closure prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnetic means are used to support closing of the closure device, then closing is facilitated by magnetic attraction force, but the closure device may snap shut inadvertently after opening
Solution Approach 1:
A blocking means (abutment portion) is introduced as an intermediary mechanical element between the closure parts. This blocking means temporarily prevents the magnetic attraction force from causing inadvertent reclosure by blocking the movement path of the second closure part during separation, allowing controlled separation while maintaining the magnetic closing assistance.
2Adaptability or versatility
If the opening direction is different from the closing direction, then opening can be effected by moving in a different direction, but a return movement may cause immediate re-closure
Solution Approach 1:
The blocking means provides preliminary anti-action by preemptively blocking the return movement path of the second closure part. This prevents the harmful effect of inadvertent reclosure before it can occur, allowing the closure device to be opened in a different direction without the risk of immediate re-closure due to magnetic attraction.
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 solution allows for a haptically pleasant opening experience by preventing immediate re-closure, ensuring the closure parts can be safely and reliably separated along a predetermined path, and facilitating easy re-closure when desired.
Implementation Method 1
magnetic means, which act between the first closure part and the second closure part, in order to support closing of the closure device by providing a force of magnetic attraction
Data Source
AI summary
A closure device for connecting two parts comprises a first closure part, a second closure part which for closing the closure device is attachable to the first closure part in a closing direction, is held at the first closure part in a closed position, for opening the closure device is movable relative to the first closure part in an opening direction different from the closing direction, and after opening of the closure device is removable from the first closure part against the closing direction for separating the closure parts, and magnetic means which act between the first closure part and the second closure part, in order to support the closing of the closure device by providing a force of magnetic attraction. Blocking means (25, 253; 32, 332; 27) are formed and provided to block a return movement of the second closure part (3) against the opening direction (O) relative to the first closure part (2) on separation of the closure parts (2, 3). In this way, a closure device is provided, in which opening can be effected in a haptically pleasant way and in particular snapping shut immediately after opening is not easily possible.