Shaving Razor Cartridge Tab Flexing for Impact Resilience
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Solution Overview
Problem
There is a need for a simpler, more robust, and intuitive connection mechanism between shaving razor handles and cartridges, particularly for premium handles made from heavier materials, which are prone to mechanical failure when dropped.
Innovation Solution
A blade carrier assembly with a tab that flexes between two positions to securely and detachably attach the cartridge to the handle, featuring a crest positioned between angled surfaces, allowing for easy loading and unloading while providing sufficient retention force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If heavier metal handles are used to provide improved control and feel, then handling comfort and control are improved, but the likelihood of attachment mechanism breaking when dropped increases
Solution Approach 1:
The attachment mechanism transitions from a static rigid connection to a dynamic system where the tab can flex and deform elastically. The tab is designed to bend during impact events, absorbing shock energy and preventing catastrophic failure of the attachment mechanism while maintaining secure connection during normal use.
Solution Approach 2:
The mechanical properties of the tab are optimized by controlling its thickness (0.5mm to 2.0mm) and material characteristics to achieve the desired balance between retention force and impact resistance. The tab's geometric parameters are specifically designed to provide adequate strength for normal shaving forces while remaining vulnerable to controlled deformation under impact loads.
2Reliability
If the attachment mechanism is made stronger to prevent detachment during shaving, then retention force is improved, but the ease of cartridge replacement deteriorates
Solution Approach 1:
The tab is designed as a flexible elastic element that dynamically responds to applied forces. During normal shaving, the tab maintains strong retention through its elastic properties. During replacement, when force is applied to the cartridge body, the tab deforms elastically to allow easy detachment, providing a dynamic response that adapts to different operational requirements.
Solution Approach 2:
The tab acts as an intermediary element between the rigid handle and the cartridge assembly. It mediates the interaction between these components, providing strong connection during normal use while allowing controlled separation during replacement. The tab's elastic deformation serves as a buffer that facilitates easy cartridge removal without requiring excessive force.
3Device complexity
If a simple tab design is used to reduce complexity, then manufacturing and assembly are simplified, but the reliability of the attachment mechanism may be compromised
Solution Approach 1:
The reliability of the simple tab design is achieved through careful optimization of its geometric parameters, particularly its thickness (0.5mm to 2.0mm) and dimensions. By controlling these parameters, the tab provides adequate retention force for normal shaving forces while maintaining simplicity in design and manufacturing. The specific parameter ranges ensure the tab can withstand operational loads without excessive deformation.
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 enhances the reliability and durability of the handle-to-cartridge connection, reducing the risk of mechanical failure and improving user experience by simplifying the attachment process while maintaining robustness.
Implementation Method 1
The tab flexes between a first position and a second position to secure and detach the shaving razor cartridge from the handle
Data Source
AI summary
A shaving razor cartridge with a housing having a bottom surface with a pair of guide members. A blade carrier has a first end with a blade platform with a tab extending from the blade platform to a second end. A blade is mounted to the blade platform. The blade platform is mounted to the bottom surface with the tab being unsupported and positioned between the pair of guides members.