Razor Handle Segmented Grip and Water-Tight Seal
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Solution Overview
Problem
Existing shaving systems face challenges in providing a low-cost, liquid-impermeable razor handle with improved assembly designs, particularly in ensuring a water-tight seal and efficient manufacturing processes.
Innovation Solution
A razor handle design featuring a partially hollow elongated structure and sleeve with a protrusion forming a gripping member, combined with a cartridge support structure that includes top and bottom portions for engagable mating with the handle, allowing for faster manufacturing and liquid resistance through methods like interference fit or ultrasonic welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a press fitting connection is used to attach the housing member to the handle, then the assembly is simple and low-cost, but it does not provide a water-tight seal
Solution Approach 1:
The handle assembly is divided into separate components (handle, housing member, grommet) that are assembled together through press fitting. The grommet acts as a separate sealing element inserted into the handle, allowing the press fitting connection to remain simple while adding water-tight sealing capability through the segmented design.
Solution Approach 2:
A grommet is introduced as an intermediary element between the handle and housing member. This grommet provides the water-tight seal while allowing the press fitting connection to maintain its simplicity. The grommet mediates between the structural connection function and the sealing function.
2Reliability
If a modular grip tube design is used with water-tight sealing, then liquid impermeability is achieved, but manufacturing complexity increases
Solution Approach 1:
The modular grip tube design segments the handle into distinct components (handle body, grommet, housing member) that can be manufactured separately using simple processes and then assembled through press fitting. This segmentation allows each component to be optimized for simple manufacturing while the assembly provides water-tight sealing.
Solution Approach 2:
The grommet is designed to be inserted into the handle through press fitting, where the deformation of the grommet during insertion creates its own sealing action. This self-service mechanism provides water-tight sealing without requiring additional sealing operations or complex assembly processes.
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 results in lower manufacturing costs and improved ergonomics, while ensuring the handle remains impervious to liquids, enhancing user experience and operational efficiency.
Implementation Method 1
allowing for faster manufacturing and liquid resistance through methods like interference fit or ultrasonic welding
Implementation Method 2
allowing for faster manufacturing and liquid resistance through methods like interference fit or ultrasonic welding
Implementation Method 3
ensuring the handle remains impervious to liquids
Data Source
AI summary
A razor handle includes an at least partially hollow elongated structure and an at least partially hollow sleeve. The elongated structure has an interior surface and an exterior surface, a first opening at a proximate end, and a second opening along a length of the elongated structure. The sleeve has an interior surface and an exterior surface with a protrusion. The protrusion is adapted to extend through the second opening to the exterior surface of the elongated structure forming a gripping member.