Magnetic Closure Device with Positive Locking Sections
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Solution Overview
Problem
Existing closure devices face challenges in achieving a simple operation while ensuring a secure closed position that prevents unintentional opening, especially under external shearing forces.
Innovation Solution
A closure device design featuring form-fitting sections and permanent magnets with oblique surfaces that engage in a specific manner to create a secure connection, allowing for easy closure and absorption of shearing forces, with guide sections facilitating relative movement for positive engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnetic elements are used for closure, then ease of operation is improved, but reliability is worsened due to inability to prevent unintentional opening under shearing forces
Solution Approach 1:
The patent combines magnetic attraction (for easy closure) with positive mechanical interlocking (for security). The first and second positive locking sections merge magnetic holding force with form-locking engagement, creating a hybrid closure mechanism that achieves both ease of operation and reliability against unintentional opening.
Solution Approach 2:
The closure device uses composite fastening mechanisms combining magnetic elements and mechanical interlocking structures. This composite approach integrates two different fastening principles (magnetic and mechanical) into a single system that leverages the advantages of both while mitigating their individual weaknesses.
2Ease of operation
If magnetic elements are used for closure, then ease of operation is improved, but strength is worsened due to inability to absorb shearing forces
Solution Approach 1:
The patent merges magnetic attraction with mechanical interlocking to create a closure system that can withstand shearing forces. The positive locking sections with interlocking surfaces provide mechanical strength complementary to the magnetic holding force, enabling the device to resist external shear forces while maintaining easy operation.
Solution Approach 2:
The closure device employs a composite fastening system combining magnetic elements and mechanical interlocking structures. This composite design integrates two different fastening principles that together provide both ease of operation and strength against shearing forces.
3Device complexity
If simple magnetic attraction is used, then device complexity is reduced, but reliability is worsened due to lack of positive locking mechanism
Solution Approach 1:
The patent merges simple magnetic attraction with a positive locking mechanism featuring interlocking surfaces. This combination maintains relative structural simplicity while significantly enhancing reliability by preventing unintentional opening through mechanical interengagement in addition to magnetic holding.
4Strength
If form-locking sections with oblique surfaces are added, then strength is improved for absorbing shearing forces, but device complexity increases
Solution Approach 1:
The patent applies local quality by adding oblique interlocking surfaces specifically to the positive locking sections where mechanical strength is needed, while keeping other parts of the closure device simple. This targeted addition of complexity only where necessary provides shear resistance without unnecessarily complicating the overall structure.
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 provides a secure and easy-to-use closure mechanism that prevents unintentional opening and absorbs external shearing forces, ensuring a stable connection between closure parts.
Implementation Method 1
Each of the first locking parts (2, 3) has a base body (20, 30) which extends substantially in a respective plane of extension (X'Y'). At least one first magnetic section (21) is arranged on a side of the base body (20) of the first locking part (2) facing the second locking part (3). At least one second magnetic section (31) is arranged on a side of the base body (30) of the second locking part (3) facing the first locking part (2).
Data Source
Figure 1A
Figure 1B~1C
Figure 1D~1E
AI summary
A closure device (1) for detachably connecting two parts to one another comprises a first closure part (2) which has at least two first magnetic sections (21) which are spaced apart from one another and form an intermediate space (22) between one another, and a second closure part (3) which has at least one second magnetic section (31), wherein the first closure part (2) and the second closure part (3) can be attached to one another along a closure direction (Z) in such a way that the closure device (1) assumes a closed position in which the at least one second magnetic section (31) is accommodated at least partially by the intermediate space (22). In the closed position, an attractive magnetic force (K1, K2), which is directed substantially perpendicular to the closure direction (Z), thereby acts both between the at least one second magnetic section (31) and each of the at least two first magnetic sections (21) forming the intermediate space (22). In addition, the first closure part (2) has at least one first form-locking locking section (23), and the second closure part (3) has at least one second form-locking section (33), wherein, in the closed position, the at least one first form-locking section (23) and the at least one second form-locking section (33) engage with one another in a form-locking manner to prevent a relative movement of the closure parts (2, 3) against one another in parallel to the closure direction (Z).