Detachable Magnet Device With Camming Hinge
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Solution Overview
Problem
Existing magnet devices for ferromagnetic surfaces lack versatility and reusability, as they often require permanent attachment and do not allow for adjustable magnetic force or easy detachment and reattachment without damaging the surface.
Innovation Solution
A detachable magnet device comprising a core housing, a rotatable annular body with a camming rib, and a baseplate that pivots, allowing for adjustable magnetic force and easy repositioning on ferromagnetic surfaces, with a magnetic sheet design that concentrates flux within an effective zone to attract items within the zone while avoiding those outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnet device uses permanent attachment to ferromagnetic surfaces, then magnetic holding force is maintained, but the device cannot be repositioned or removed without damaging the surface
Solution Approach 1:
The baseplate is designed to pivot between an engaged position (where the magnet contacts the ferromagnetic surface) and a disengaged position (where the magnet is separated from the surface). This dynamic movement allows the device to transition between strong magnetic attachment and easy removal/repositioning, resolving the contradiction between holding force and repositioning capability
Solution Approach 2:
The device is divided into separable components: the baseplate that contacts the ferromagnetic surface and the main body that can be repositioned. The hinge joint creates a mechanical separation between the magnetic attachment function and the repositioning function, allowing independent optimization of each
2Force
If the magnet device applies strong magnetic force to attract ferromagnetic items, then attraction capability is improved, but items outside the desired zone are also attracted
Solution Approach 1:
The magnetic sheet is divided into multiple islands with alternating polarities, creating localized magnetic attraction zones. Each island portion attracts ferromagnetic items within its specific region while the interstitial portions with opposite polarity prevent attraction in the spaces between, achieving spatially selective magnetic force distribution
Solution Approach 2:
The magnetic sheet thickness is specifically controlled to create an effective zone of defined depth. By adjusting the thickness parameter, the magnetic flux is confined to a specific depth range, allowing items within the effective zone to be attracted while items outside this zone remain unaffected
3Adaptability or versatility
If the magnet device allows detachment and reattachment, then reusability is improved, but magnetic force adjustment mechanism becomes more complex
Solution Approach 1:
The camming rib mechanism automatically adjusts the magnetic force when the annular body is rotated. The camming action self-regulates the baseplate engagement without requiring external actuators or complex control systems, achieving adaptive magnetic force adjustment through simple mechanical motion
Solution Approach 2:
The camming rib acts as an intermediary between the rotatable annular body and the baseplate. Rotation of the annular body moves the camming rib, which in turn applies camming forces to pivot the baseplate, providing a simple mechanical linkage that translates rotational motion into magnetic force adjustment
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
Enables repositioning and reusability of the magnet device without damaging the surface, with adjustable magnetic force and effective attraction of ferromagnetic items within the defined zone, accommodating various ferromagnetic materials including painted surfaces.
Implementation Method 1
devices having one or more magnets which generate magnetic attraction forces with ferromagnetic objects
Implementation Method 2
magnetic flux flows through the north pole and the south pole of each island portion
Implementation Method 3
the annular body includes a camming rib that extends radially inward into the cavity. In some embodiments, the camming rib applies a camming force to the tab portion of the baseplate upon rotation of the annular body relative to the core housing
Implementation Method 4
the baseplate also includes a pivot portion that engages a corresponding portion of the core housing to form a hinge joint such that the baseplate and the magnet selectively pivot about a pivot axis of the hinge joint
Data Source
AI summary
Devices for detachable attachment to a ferromagnetic object and/or surface are disclosed. The device may comprise a core housing defining a pocket, a magnet disposed in the pocket, and a baseplate fixed to the magnet sheet assembly. The baseplate may include a pivot portion that engages a corresponding portion of the core housing to form a hinge joint such that the baseplate and the magnetic sheet assembly selectively pivot about a pivot axis of the hinge joint relative to the core housing. The camming mechanism may apply a camming force to a portion of the baseplate and the camming force may urge the magnet and the baseplate to pivot about the pivot axis of the hinge joint.