Razor Assembly Magnetic Restoring Force
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Solution Overview
Problem
Conventional multi-axis rotating razors have complex and vulnerable rotational structures, which can lead to reliability issues and deformation over time.
Innovation Solution
A razor assembly with a connecting head, a razor handle, and a restoring force provider, which includes rotatable magnets and fixed magnets to provide a magnetic force for restoring the connecting head to its rest position, simplifying the rotational structure while maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a multi-axis rotational structure is implemented to allow the shaving blade to move along the profile of the user's skin, then the contact smoothness between blade and skin is improved, but the structural complexity and vulnerability increase
Solution Approach 1:
The patent replaces complex mechanical rotational joints with a magnetic field-based restoring force system. The magnetic restoring force provider generates magnetic attraction forces that automatically guide the connecting head to return to its neutral position, eliminating the need for complex mechanical pivot joints and springs while achieving multi-axis rotational functionality.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the connecting head and the handle. The magnetic restoring force acts as an invisible mediator that transmits the restoring force without requiring direct mechanical contact, thereby simplifying the rotational structure while maintaining the desired contact smoothness.
2Productivity
If a multi-axis rotational structure is implemented to promote smoother contact between blade and skin, then the shaving efficiency is improved, but the reliability of the rotational structure deteriorates
Solution Approach 1:
The patent eliminates vulnerable mechanical rotational joints by substituting them with a magnetic field-based restoring force system. The magnetic attraction forces provide a contactless, wear-free mechanism for achieving multi-axis rotation, thereby maintaining high shaving efficiency while significantly improving the reliability and durability of the rotational structure.
Solution Approach 2:
The magnetic restoring force provider automatically generates the necessary restoring forces without requiring external intervention or complex mechanical components. The system self-regulates the position of the connecting head through magnetic attraction, eliminating the need for maintenance-prone mechanical pivots and springs.
3Ease of manufacture
If a simple rotational structure is used to reduce complexity, then the manufacturing ease is improved, but the ability to provide multi-axis rotational function deteriorates
Solution Approach 1:
The patent achieves multi-axis rotational functionality through a magnetic field-based restoring force system rather than complex mechanical joints. This approach dramatically simplifies manufacturing by eliminating precision mechanical pivots, bearings, and springs, while the magnetic field naturally provides the required multi-directional movement capability through its omnidirectional attraction properties.
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 proposed solution provides a simpler and more reliable rotational structure for the razor assembly, ensuring smooth and efficient shaving performance without deformation over prolonged use.
Implementation Method 1
one or more fixed magnets coupled to the razor handle and arranged such that a magnetic force is generated between the rotary magnet and the fixed magnet
Data Source
AI summary
A razor assembly includes a razor cartridge, a connecting head, a razor handle, and first and second magnets. The razor cartridge includes a blade housing for housing shaving blades. The connecting head has a first side detachably coupled to the razor cartridge. The razor handle is coupled to the connecting head to be rotatable about a rotational axis. The first magnet is disposed on a second side of the connecting head and co-rotates with the connecting head about the rotational axis. The second magnet is disposed at a fixed position on the razor handle and placed opposite to the first magnet at a neutral position such that the first and second magnets and razor handle are aligned with a longitudinal axis of the razor handle. Magnetic force between the first and second magnets biases the connecting head toward the neutral rotation position with respect to the razor handle.