Razor Cartridge Blade Support Segmentation
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Solution Overview
Problem
Razor cartridges with multiple blades in narrow housings face difficulties in cleaning and stability issues due to lack of firm support for razor blades, leading to trembling and separation during shaving.
Innovation Solution
A razor cartridge design featuring a lateral supporter and a bottom supporter with varying heights and shapes to securely hold razor blades, improving stability and facilitating easy cleaning by creating space for sludge discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple razor blades are mounted in a narrow blade housing, then shaving performance is improved, but cleaning difficulty increases and blade stability deteriorates
Solution Approach 1:
The blade housing is segmented into multiple functional zones: a cleaning passage extending from the front end to the rear end, and multiple supporter structures (first supporter, second supporter, third supporter) that divide the housing into distinct support regions. This segmentation allows simultaneous accommodation of multiple blades while maintaining cleaning accessibility and blade stability.
Solution Approach 2:
The cleaning passage is designed to extend in the longitudinal dimension from front to rear, while supporters are positioned at different heights and locations. The first supporter extends from the side wall, the second from the bottom wall, and the third from the rear end, creating a three-dimensional support network that stabilizes blades without blocking cleaning access.
2Productivity
If multiple razor blades are mounted in a narrow blade housing, then shaving performance is improved, but blade stability deteriorates due to lack of firm support
Solution Approach 1:
Different supporter structures are positioned at specific locations with tailored geometries: the first supporter extends from the side wall to support the front portion, the second supporter rises from the bottom wall to support the middle portion, and the third supporter is located at the rear end. Each supporter provides localized support exactly where needed, ensuring overall blade stability during shaving.
Solution Approach 2:
Multiple supporter structures are nested within the blade housing in a compact arrangement. The supporters are positioned at different depths and heights, with some supporters potentially nested within the spaces created by others, maximizing the use of available space while providing comprehensive blade support.
3Ease of manufacture
If the bottom supporter height is reduced, then manufacturing ease is improved, but support coverage is reduced
Solution Approach 1:
The supporter structures are designed with asymmetric characteristics: the first supporter extends horizontally from the side wall, the second supporter rises vertically from the bottom wall, and the third supporter is positioned at the rear end. This asymmetric arrangement allows the bottom supporter to have reduced height while other supporters compensate to maintain overall support coverage.
Solution Approach 2:
The multiple supporter structures work together to provide comprehensive support: the first supporter, second supporter, and third supporter collectively fulfill the support function that a single tall bottom supporter would provide. This multi-functional arrangement allows each individual supporter to be simpler in structure while maintaining overall support effectiveness.
Data Source
AI summary
Disclosed is a razor cartridge including: at least one razor blade including an edge portion with a cutting edge, a bent portion, and base portion; a blade housing configured to accommodate at least one razor blade in a longitudinal direction; and a lateral supporter spaced apart from a bottom of the blade housing, extended from an inner lateral wall of the blade housing, and configured to support a longitudinal lateral portion of the razor blade. The height of the bottom supporter supporting the center portion of the razor blade is lowered to lower the difficulty in manufacturing a mold for injection molding, the lateral supporter protrudes to stably support the edge of the razor blade, and the bottom supporter having a low height to further secure a cleaning passage in the center portion of the razor blade cartridge to thereby have an effect on more easily removing sludge.