Razor Cartridge Connector with Segmented Floor for Independent Detent Deflection
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Solution Overview
Problem
Existing safety razor systems require either high force to disconnect the cartridge for normal use or low force for ejection, failing to provide a balanced mechanism for secure attachment and easy disconnection.
Innovation Solution
A safety razor design featuring a handle extension with symmetrically or asymmetrically positioned detents, a center slot, and a lateral slot, allowing independent deflection of each detent for easy user-operated ejection while requiring higher force for accidental disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If both detents are located on a cut-out cantilevered flap portion of the connector floor, then the cartridge can be securely attached to the handle, but the detents deflect together during ejection requiring high user force
Solution Approach 1:
The connector floor is segmented by introducing a center slot that divides the floor into two independent portions, allowing each detent to deflect independently during ejection while maintaining secure attachment during normal use
Solution Approach 2:
The center slot creates different structural properties in different regions of the connector floor, making the area around each detent locally flexible for independent deflection while maintaining overall structural integrity for secure attachment
2Reliability
If the detents are positioned to engage deeply for secure attachment, then the cartridge remains firmly connected during normal use, but excessive force is required to disconnect the cartridge
Solution Approach 1:
The detents are designed to be dynamic rather than static, capable of deflecting independently during ejection to reduce the force required for disconnection while maintaining reliable connection during normal use through their engagement depth
3Object-affected harmful factors
If the connector floor is made rigid to prevent accidental disconnection, then the cartridge remains securely attached, but the ejector button requires high force to operate
Solution Approach 1:
The rigid connector floor is segmented by the center slot into two independently deflecting portions, allowing the overall structure to remain rigid against accidental disconnection while enabling controlled deflection during intentional ejection operations
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
Enables easy cartridge disconnection with low user force while maintaining secure attachment during normal use and resisting accidental disconnection with higher force, enhancing user safety and convenience.
Implementation Method 1
The two detents are on the floor and extend into the recess... deflection of any one detent on its respective floor portion is substantially independent of deflection of the other detent
Implementation Method 2
the center slot is sized such that deflection of any one detent on its respective floor portion is substantially independent of deflection of the other detent on its respective floor portion
Data Source
AI summary
A safety razor has a handle with an extension having a pair of depressions to each receive a respective one of two detents of a razor cartridge and which extension provides cartridge support structure that engages a recess of the razor cartridge. The razor cartridge has a blade unit and a connector. The recess of the razor cartridge is in part defined by opposed walls of the connector providing a floor and a ceiling and the two detents are on the floor and extend into the recess. The floor has a slot between the two detents and the slot is sized such that deflection of any one detent on its respective floor portion is substantially independent of deflection of the other detent on its respective floor portion.