Shaving Razor Interconnection Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shaving razors with replaceable blade cartridges have complex interconnection mechanisms that increase manufacturing costs and complexity, leading to inferior shave quality compared to disposable razors without replaceable blades.
Innovation Solution
A simplified interconnection feature for shaving razor cartridges using a unitarily injection-molded base member with elastomeric reinforcement and internal weights, where the elastomeric reinforcement supports a living hinge to securely engage the blade cartridge without requiring complex assembly or additional parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex interconnection mechanisms with multiple parts (springs, hooks, release buttons) are used, then the blade cartridge can be securely connected to the handle, but the manufacturing cost and device complexity increase
Solution Approach 1:
The patent merges multiple discrete interconnection components (springs, hooks, buttons) into a single integrated molding featuring a living hinge mechanism. This unified structure eliminates the need for separate parts while maintaining secure connection functionality, directly resolving the contradiction between connection reliability and device complexity
Solution Approach 2:
The living hinge mechanism serves multiple functions simultaneously: it acts as a hinge for cartridge attachment, provides spring-like retention force, and enables easy release through button activation. This multi-functionality replaces what previously required multiple specialized components, reducing complexity while maintaining reliability
2Reliability
If complex interconnection mechanisms with numerous discrete parts are used, then the blade cartridge can be securely connected, but the manufacturing cost increases due to separate manufacture and assembly
Solution Approach 1:
By combining multiple discrete components into a single molded interconnection featuring a living hinge, the patent eliminates multiple manufacturing steps and assembly operations. This single-piece construction significantly reduces manufacturing cost while maintaining the secure connection reliability that users require
Solution Approach 2:
The living hinge mechanism is self-contained and self-actuating, requiring no external assembly or adjustment. The hinge automatically provides retention force and enables release through user activation, eliminating the need for complex assembly processes and reducing manufacturing costs
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 cost-efficient and durable interconnection system that enhances tactile sensation and shave quality while reducing manufacturing complexity and costs, allowing for easy cartridge replacement and improved user experience.
Implementation Method 1
elastomeric reinforcement supports a living hinge to securely engage the blade cartridge
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A reduced cost interconnection for shaving razor cartridges. A base member is injection molded as a single continuous mass. The base member defines at least one void that may receive a mass increasing member. The base member has a handle portion integrally formed with a living hinge and an interconnection feature. The interconnection feature is biased to detachably engage a counterpart interconnection feature of a blade cartridge. Elastomeric reinforcement is over molded onto the base member to improve the structural integrity of the living hinge.