Wet Razor Handle With Spring-Loaded Ejector Coupling
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Solution Overview
Problem
Existing razor handles with detachable cutting units face complications in design and assembly due to the need for secure yet detachable connections, leading to complex structures.
Innovation Solution
A handle design featuring an elongated handle section with a coupling section that allows for a detachable and rotatable cutting unit, utilizing a spring-loaded ejector mechanism with a peg and peg hole connection, and an operating button to easily detach the cutting unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secure detachable connection is used to fasten the cutting unit to the handle, then the reliability of the connection is improved, but the device complexity increases due to numerous individual parts and complicated design
Solution Approach 1:
The patent combines multiple functions into a single integrated connector component that includes both the fastening function and the detachable connection mechanism. The connector integrates the peg structure, the engagement features, and the coupling interface into one piece, eliminating the need for separate fastening elements and reducing the total number of parts while maintaining secure attachment
Solution Approach 2:
The connector is designed as a multi-functional element that simultaneously provides structural support, secure fastening, and easy detachment capabilities. The single connector component performs multiple roles: it anchors the cutting unit to the handle, allows for controlled rotation, enables straightforward detachment, and maintains alignment during operation, thereby reducing overall device complexity
2Adaptability or versatility
If a complicated design with numerous individual parts is used to achieve detachable connection, then the adaptability of the handle is improved, but the ease of manufacture deteriorates due to considerable assembly effort
Solution Approach 1:
By merging multiple individual parts into a single integrated connector, the patent significantly reduces the number of assembly steps required during manufacturing. The connector is installed as one component rather than requiring the assembly of multiple separate parts, thereby reducing assembly effort and manufacturing complexity while maintaining configuration flexibility
Solution Approach 2:
The patent segments the handle into two main functional sections: a handle section and a coupling section, connected by the simplified connector. This segmentation allows for modular manufacturing where the connector can be produced separately and then easily attached, reducing overall assembly effort while maintaining adaptability for different cutting unit configurations
3Reliability
If a resiliently elastic mounting permanently integrated into the handle is used, then the reliability of the cutting unit attachment is improved, but the ease of manufacture deteriorates due to required assembly effort during production
Solution Approach 1:
The patent merges the resilient mounting function directly into the connector component itself, eliminating the need for separate elastic elements permanently integrated into the handle. The connector incorporates built-in resilient features that provide attachment stability while being installed as a single removable component, thereby reducing the assembly effort required during production compared to permanently integrated solutions
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 a simple, easy-to-produce and quick-to-assemble handle that supports multiple configurations and easy replacement of cutting units without complex assembly efforts.
Implementation Method 1
The ejector (08) includes a spring element (09), which serves to automatically return the ejector (08) to its initial position by means of an elastic force
Data Source
AI summary
The invention relates to a handle for a wet razor including a handle section as well as a coupling section for detachably attaching a cutting unit to the handle. The coupling section comprises a housing section including a housing cavity, which has an insertion opening at the end directed toward the cutting unit and an operating opening. The coupling section furthermore comprises a connector including fastening elements, which engage in the housing section, and including a peg, which protrudes beyond the plane of the insertion opening. The coupling section furthermore comprises an ejector, which is inserted into the housing cavity so as to be axially displaceable, including a spring element, which axially urges the ejector into the housing cavity, and a ram, which during axial displacement of the ejector in the direction toward the cutting unit extends beyond the plane of the insertion opening. Finally, the coupling section comprises an operating button, which passes through the operating opening and acts on the ejector so as to enable the axial displacement thereof.