Integrated Heated Razor Blade Housing Design
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Solution Overview
Problem
Conventional heated razor cartridges require a larger blade housing to accommodate a separate heating element, leading to difficulties in precise shaving, increased production complexity, vulnerability to external shocks, and inconsistent tactile sensations due to exposed heating members.
Innovation Solution
A razor cartridge design with a heated area integrally formed within the blade housing, using conductive materials for heating patterns and a non-heated area made of different materials, which reduces the overall size, improves durability, and provides consistent tactility by generating heat through electric power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate heating element is disposed in front of a guard in the blade housing, then the heating function is achieved, but the blade housing size increases
Solution Approach 1:
The heating element is integrated directly into the guard structure, merging two previously separate components (heating element and guard) into a single unified component. This eliminates the need for additional space to accommodate a separate heating element while maintaining the heating function.
Solution Approach 2:
The guard is designed to serve multiple functions: it acts as both a protective barrier and a heating element. By making the guard itself capable of generating heat, the design eliminates the need for a dedicated heating component, thereby reducing overall blade housing size.
2Temperature
If a separate heating element is mounted on the blade housing, then the heating function is achieved, but the production process becomes more complex
Solution Approach 1:
The heating element and guard are combined into a single integrated component, which simplifies the production process by reducing the number of separate parts that need to be manufactured and assembled. This integration eliminates additional mounting steps and reduces production complexity.
3Temperature
If the heating member is externally exposed, then the heating function is achieved, but the heating member becomes vulnerable to external shock and damage
Solution Approach 1:
The heating element is integrated into the guard structure, which inherently protects it from external shocks and damage. The guard serves as both a functional heating component and a protective element, eliminating the vulnerability of externally exposed heating members.
4Temperature
If a metallic heating member is disposed in front of a rubber guard, then the heating function is achieved, but inconsistent tactile sensations occur due to different materials contacting the skin
Solution Approach 1:
The guard is designed with differentiated zones: a non-contact portion made of one material and a contact portion made of another material. This allows the heating function to be maintained while ensuring that only the appropriate material contacts the skin, providing consistent tactile sensation.
Solution Approach 2:
The guard is constructed using composite materials with different properties in different regions. The contact portion uses a material suitable for skin contact, while the non-contact portion can use different materials optimized for other functions, achieving both heating and tactile consistency.
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 allows for a comfortable and precise shave without the drawbacks of larger size, increased complexity, or vulnerability, while enhancing durability and production efficiency.
Implementation Method 1
the heated area is configured to generate heat by receiving electric power from an external power supply
Data Source
AI summary
The present disclosure provides a razor cartridge including at least one shaving blade having a cutting edge, a blade housing configured to accommodate the at least one shaving blade aligned in a transverse direction, a heated area formed at the blade housing, and comprising at least one heating pattern made of a conductive material, and a non-heated area formed at the blade housing made of a material different from the heated area, wherein the conductive material included in the at least one heating pattern is a conductive plastic or metallic material, and wherein the heated area is configured to generate heat by receiving electric power from a power supply.