Razor Cartridge Docking Structure for Easy Blade Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing razor cartridges are difficult to replace due to strong coupling with the handle, leading to potential injury risks and hygienic issues.
Innovation Solution
A razor cartridge design featuring a connector on the blade housing with a downward slope and accommodating spaces for the handle's connecting arms, allowing easy separation and replacement by minimizing friction and contact area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coupling between razor cartridge and handle is made strong to prevent separation during shaving, then safety is improved, but ease of replacement deteriorates
Solution Approach 1:
The coupling system is divided into distinct functional zones: the docking portion with downward slope for easy insertion and initial engagement, the connecting arms for secure lateral retention, and the connector body for structural support. This segmentation allows each component to perform its specific function optimally - secure coupling during shaving while enabling easy replacement when needed.
Solution Approach 2:
The docking portion features a downward slope in the opposite direction to the entry direction of the connecting arm. This inverted geometry means that during insertion, the connecting arm naturally slides down the slope into the accommodating space, providing easy attachment. However, during removal, the same slope geometry works in reverse to facilitate clean separation, resolving the contradiction between secure coupling and easy replacement.
2Reliability
If the contact area between connecting arm and connector is increased to improve coupling strength, then safety is improved, but ease of replacement deteriorates
Solution Approach 1:
The connector is designed with non-uniform contact distribution: the docking portion provides a sloped surface for easy engagement, the connecting arms provide localized point contacts for secure retention during use, and the accommodating space provides geometric constraint. This local quality differentiation ensures strong coupling where needed (at the connecting arm contact points) while maintaining ease of replacement through the sloped docking portion geometry.
Data Source
AI summary
A razor cartridge to couple with a razor handle may include at least one blade formed with a cutting edge. The razor cartridge may also include a blade housing accommodating the blade in a longitudinal direction to expose the cutting edge toward a front upper side. The blade housing may include a connector disposed on a lower surface of the blade housing and forming an accommodating space in which a connecting arm of the razor handle is at least partially accommodated. The blade housing may also include a docking portion forming an inlet of the accommodating space on the lower surface of the blade housing and including a downward slope in an opposite direction to a direction where the connecting arm enters the accommodating space.