Metal Leaf Spring Return for Shaving Assembly
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Solution Overview
Problem
Shaving systems with pivoting attachments often lack effective resistance and consistent return mechanisms, leading to suboptimal shaving performance and durability.
Innovation Solution
A replaceable shaving assembly featuring a metal leaf spring return element that provides resistance and return forces, integrated with a pivot stop and interface element, allowing the blade unit to pivotably connect to the handle and return to a rest position, enhancing contact with the skin and stability during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pusher and follower mechanism is used to provide resistance and return forces, then the blade unit can return to rest position, but the device complexity increases and reliability decreases
Solution Approach 1:
The patent extracts the return force function from the complex pusher-follower mechanism and implements it through a simple metal leaf spring element. This single spring component replaces the multi-part mechanical mechanism, reducing overall device complexity while maintaining the essential return-to-rest functionality.
Solution Approach 2:
The metal leaf spring's physical parameters (thickness, length, material properties) are optimized to provide the required return force characteristics. By adjusting these parameters, the spring can deliver consistent resistance and return forces without requiring complex mechanical linkages or adjustment mechanisms.
2Reliability
If prior art resistance mechanisms are used, then some return force is provided, but the shaving performance and durability are suboptimal
Solution Approach 1:
The metal leaf spring is constructed from composite or alloy materials that combine high strength, corrosion resistance, and elastic properties. This material selection ensures the spring maintains consistent return forces over extended use while resisting degradation from moisture and mechanical stress, thereby improving both performance consistency and durability.
Solution Approach 2:
The blade unit with integrated leaf spring is designed as a disposable or replaceable assembly. This allows the entire return mechanism to be replaced periodically with a new, factory-calibrated unit, ensuring consistent shaving performance without requiring maintenance or adjustment of the return force mechanism.
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 metal leaf spring return element ensures consistent resistance and return forces, improving shaving performance and durability by maintaining optimal blade contact and stability, while being resistant to corrosion and wear.
Implementation Method 1
the return element comprising a metal leaf spring
Data Source
AI summary
A replaceable shaving assembly including a blade unit and an interface element configured to removeably connect the blade unit to a handle, on which the blade unit is pivotably mounted, the interface element including a return element configured to provide a return force between the blade unit and handle, the return element including a metal leaf spring.