Razor Cartridge Coupling Structure to Prevent Accidental Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing razor assemblies face issues with the exposure of coupling portions leading to deformation or damage, improper coupling, difficulty in recognizing the coupling direction, and unintended release of razor handle and cartridge during shaving.
Innovation Solution
A razor assembly design featuring a razor handle with a coupling portion protected by a restoring force providing portion and an inclined surface, along with a connector that minimizes exposure and facilitates easy, accurate coupling and reduces unintended release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the coupling portion is exposed to the outside for easy coupling and release, 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 housing structure, specifically formed as an internal feature of the handle assembly. The connector inserts into the coupling portion through a defined interface, allowing coupling while protecting the coupling portion from external impacts by embedding it within the housing rather than exposing it on the outer surface.
Solution Approach 2:
The housing acts as an intermediary structure that mediates between the external environment and the coupling portion. The housing provides a protected pathway for the connector to access the coupling portion, shielding it from direct external impacts while still enabling the coupling function through the defined insertable interface.
2Reliability
If the coupling portion is protected from external impact, then the reliability is improved, but the ease of coupling and recognition of coupling direction deteriorates
Solution Approach 1:
The patent employs visual indicators including colored bands or markings on the connector and corresponding features on the handle to indicate the correct coupling direction. These visual cues allow users to easily recognize the proper orientation for coupling without exposing the coupling portion itself, maintaining both protection and ease of use.
Solution Approach 2:
The housing and connector are designed with pre-defined geometric features such as asymmetric shapes, ridges, or grooves that guide the connector into the correct orientation during the coupling process. This preliminary structural guidance ensures proper alignment before the connector engages with the coupling portion, eliminating the need for users to manually determine the correct direction.
3Reliability
If the connector is designed for secure coupling, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The coupling portion integrates multiple functions into a single structural feature: it provides mechanical engagement for secure coupling, incorporates visual indicators for direction recognition, and defines the insertion pathway for the connector. By merging these functions into one integrated component rather than separate elements, the design achieves secure coupling without proportionally increasing complexity.
Solution Approach 2:
The housing structure serves multiple purposes simultaneously: it protects internal components, provides the coupling interface, incorporates visual indicators, and guides the coupling process. This multi-functionality reduces the need for additional separate components, maintaining simplicity while achieving reliable secure coupling.
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 impact, enhances ease and accuracy of coupling, improves shaving performance, and minimizes unintended release, thereby extending the lifespan and convenience of the razor assembly.
Implementation Method 1
a restoring force providing portion configure to provide a restoring force against pivoting of the razor cartridge
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A razor handle, according to one embodiment of the present invention, comprises: a coupling part which is detachably coupled to a razor cartridge and is detachably coupled to a connector, the razor cartridge accommodating at least one blade in the longitudinal direction and being equipped with the connector on one side thereof; and a restoring force provision part which provides a restoring force with respect to the rotation of the razor cartridge, wherein the coupling part comprises an inclined surface on the upper surface of an end portion side thereof, and the restoring force provision part is provided on the upper portion of the coupling part and covers at least a portion of the inclined surface such that the lower surface of the restoring force provision part is spaced apart from the inclined surface.