Razor Assembly Pivot Axis Dynamics for Load Distribution
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Solution Overview
Problem
Conventional wet razors with fixed pivot axes suffer from uneven load distribution during shaving, leading to skin damage and inefficient handling due to concentrated force on a single point, especially when encountering skin irregularities or thick hair, and two-way razors struggle to maintain effective skin contact and guard function.
Innovation Solution
A razor assembly with a pivot axis that moves between rest and operational positions, utilizing a connector and recovering force provider to distribute load and maintain skin contact, featuring a guided shaft member that moves along guide rails and elastic/magnetic recovering members to adjust the pivot axis position based on load and shaving direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the pivot axis is fixed at a specific position in the blade housing, then the structure is simple and stable, but the load is concentrated at one point causing skin damage and safety issues
Solution Approach 1:
The patent applies the dynamics principle by making the pivot axis movable instead of fixed. The connector is configured to be pivotable around a pivot axis that can move between a first rest position and a first position spaced apart from the rest position. This dynamic adjustment allows the pivot axis to shift away from high-load areas during shaving, distributing the load and preventing concentration of force that causes skin damage.
2Ease of operation
If the pivot axis is positioned adjacent to the guard portion, then the skin stretching function of the guard is enhanced, but the load on the guard portion increases significantly
Solution Approach 1:
The movable pivot axis allows dynamic repositioning during shaving operations. When the razor encounters skin irregularities or thick hair, the pivot axis can shift to maintain optimal guard function without concentrating excessive load on the guard portion, thus balancing skin stretching capability with structural durability.
Solution Approach 2:
The patent changes the positional parameter of the pivot axis dynamically. The connector's ability to pivot around a movable axis rather than a fixed point allows the system to adjust the load distribution parameters in real-time, reducing peak loads on the guard while maintaining effective skin stretching during normal operation.
3Adaptability or versatility
If the razor handle and razor cartridge are connected at different sites, then the connection flexibility is improved, but the angle between the two components is limited
Solution Approach 1:
The connector is designed with pivotability around a movable pivot axis, enabling dynamic adjustment of the angle between the razor handle and razor cartridge. This dynamic connection mechanism provides both flexibility in connection sites and sufficient angular range for comfortable shaving operations.
4Adaptability or versatility
If a conventional two-way wet razor uses symmetrical formation, then both shaving directions are supported, but the pivot axis cannot be positioned to a specific area of the blade housing
Solution Approach 1:
The patent employs asymmetric design in the connector and blade housing configuration, allowing the pivot axis to be positioned at a specific optimal location rather than being constrained by symmetry. This asymmetric arrangement enables better skin contact and guard function while still supporting two-way shaving through the movable pivot capability.
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
This design enhances user safety by reducing skin damage and improving handling by distributing force and maintaining effective skin contact, allowing for smoother shaving and reduced risk of skin irritation.
Implementation Method 1
a first recovering member configured to provide the connector with a recovering force for recovering the pivot axis to the first rest position
Implementation Method 2
a first recovering member configured to provide the connector with a recovering force for recovering the pivot axis to the first rest position
Data Source
AI summary
A razor assembly includes a razor cartridge, a connector and a recovering force provider. The razor cartridge includes at least one shaving blade having a cutting edge, and a blade housing configured to receive the at least one shaving blade in a transverse direction. The connector is configured to extend in parallel with the transverse direction, and to be coupled to the blade housing so as to be pivotable around a pivot axis movable between a first rest position and a first position spaced apart from the first rest position in a first shaving direction. The recovering force provider includes a first recovering member configured to provide the connector with a recovering force for recovering the pivot axis to the first rest position when the pivot axis is located between the first rest position and the first position.