Razor Cartridge Coupling With Controlled Ejection and Impact Protection
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Solution Overview
Problem
Existing razor assemblies face issues with the exposure of coupling portions leading to deformation or damage, improper coupling, and unpredictable detachment of razor cartridges, making them difficult to use and maintain.
Innovation Solution
A razor assembly design featuring first and second arms spaced apart in the longitudinal direction, with a restoring force providing portion that ensures easy and accurate coupling, protects the coupling portion from external impact, and allows controlled detachment of the razor cartridge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the coupling portion is exposed to the outside for easy access, then the ease of operation is improved, but the coupling portion becomes vulnerable to external impact and deformation
Solution Approach 1:
The coupling portion is nested within the handle body structure, specifically formed as an internal cavity or recessed area. The connector is received within the handle head, protected by the surrounding handle structure. This nesting arrangement allows the coupling portion to be accessible for coupling operations while being physically protected from external impacts that could cause deformation or damage.
2Ease of manufacture
If the coupling portion structure is simplified for easy manufacturing, then the ease of manufacture is improved, but the reliability of coupling deteriorates
Solution Approach 1:
The coupling mechanism is segmented into distinct functional elements: the coupling portion with first and second arms, the connector with corresponding engagement features, and the restoring force providing portion. This segmentation allows each component to be optimized for its specific function while maintaining overall reliability. The arms can be manufactured as simple protrusions, the connector as a molded piece with engagement features, and the restoring force mechanism as a separate elastic element, balancing manufacturing ease with coupling reliability.
3Reliability
If the razor cartridge is held firmly in the razor handle, then the reliability of coupling is improved, but the ease of detachment deteriorates
Solution Approach 1:
The coupling mechanism incorporates a restoring force providing portion (such as an elastic member or spring) that creates a dynamic balance between holding force and release force. During normal use, the elastic member maintains constant pressure to secure the razor cartridge firmly. During detachment, when external force is applied, the elastic member compresses and then releases stored energy to assist ejection. This dynamic behavior allows the system to provide both strong holding force and easy release without requiring complex mechanisms.
4Ease of operation
If the razor cartridge is ejected with high force for easy removal, then the ease of operation is improved, but the risk of excessive ejection distance increases
Solution Approach 1:
The restoring force providing portion acts as a feedback mechanism that modulates the ejection force. As the razor cartridge is pushed for detachment, the elastic member compresses, storing energy. When the coupling arms disengage from the connector, the stored energy is released to provide a controlled push that ejects the cartridge to a moderate distance. The feedback from the elastic member's compression state automatically regulates the ejection force, preventing both insufficient ejection and excessive ejection distance.
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 design protects the coupling portion from external damage, facilitates easy and accurate assembly, and ensures predictable and controlled ejection of the razor cartridge, extending the lifespan and usability of the razor handle.
Implementation Method 1
a restoring force providing portion providing a restoring force against pivoting of the razor cartridge
Implementation Method 2
the restoring force providing portion provides an ejection load to the razor cartridge in a state that the razor cartridge is coupled to the razor handle in a resting state
Data Source
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AI summary
A razor handle according to an embodiment of the present invention comprises: at least one blade having a cutting edge; a first arm and a second arm which are detachably coupled to a razor cartridge accommodating the blade in the longitudinal direction and having a connector formed on one side thereof, wherein the first arm and the second arm are spaced apart in the longitudinal direction and become coupled to the connector while moving away from each other and decoupled from the connector while approaching each other; and a restoring force-providing part that provides a restoring force against the rotation of the razor cartridge. The restoring force-providing part provides an ejection load to the razor cartridge when the razor cartridge is in an idle state and coupled to the razor handle. As the first arm and the second arm approach each other and become decoupled from the connector, the razor cartridge is discharged from the razor handle on the basis of the ejection load provided to the razor cartridge by the restoring force-providing part.