Variable Blade Span Razor Cartridge with Sliding Adjustment
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Solution Overview
Problem
Conventional razor cartridges have a fixed blade span, which cannot be adjusted to accommodate individual user preferences, leading to potential skin irritation and inadequate cleaning of shaving residue.
Innovation Solution
A razor cartridge design with a span adjusting mechanism, allowing users to change the spacing between blades by sliding a span adjusting shifter, which moves the blade housings and guards to customize the span according to personal needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the span is too large, then it facilitates the cleaning of sludge, but it increases skin irritation
Solution Approach 1:
The blade housing is designed to be movable relative to the cartridge frame through a sliding mechanism, allowing the span to be dynamically adjusted between a narrow position for reduced skin irritation and a wide position for effective sludge cleaning. The span adjusting shifter enables the user to change the blade housing position along the longitudinal axis, transforming the fixed span into a variable parameter that can be adapted to different shaving needs.
2Object-affected harmful factors
If the span is too small, then it reduces skin irritation, but it leads to insufficient cleaning of sludge
Solution Approach 1:
The movable blade housing allows the span to be adjusted from a narrow configuration that minimizes skin irritation to a wide configuration that maximizes sludge cleaning efficiency. The sliding mechanism with span adjusting shifter provides dynamic reconfigurability, enabling the user to switch between these two extreme positions based on the immediate shaving requirements.
3Device complexity
If the blade housing is fixed, then the structure is simple, but the span value becomes unchangeable and cannot be customized according to user needs
Solution Approach 1:
The blade housing is transformed from a fixed component to a movable one through the sliding mechanism. The span adjusting shifter, which includes engagement protrusions and grooves, enables the blade housing to be repositioned along the longitudinal axis of the cartridge frame, providing multiple fixed positions for span customization while maintaining relative structural simplicity.
Solution Approach 2:
The razor cartridge is divided into separable components: the cartridge frame, the movable blade housing, and the span adjusting shifter. This segmentation allows the blade housing to be independently positioned and adjusted relative to the frame, enabling span customization without redesigning the entire cartridge structure.
Data Source
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AI summary
The present disclosure relates to a razor cartridge 1 with variable blade span(s), the razor cartridge including a plurality of blades 80; a plurality of blade housings 51 extended in a first direction and having seats 512 configured to support the plurality of blades; a cartridge frame 10 having one or more rails 11 configured to support the plurality of blade housings such that the plurality of housings are movable along the one or more rails in a second direction perpendicular to the first direction; and a span adjusting shifter 20 coupled to the plurality of blade housings and configured to cause the plurality of blade housings to move along the one or more rails in the second direction.