Razor Cartridge Mounting System for Blade Alignment
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Solution Overview
Problem
Manufacturing a razor cartridge with a multi-blade configuration poses challenges in narrowing the transverse interval between mounting protrusions, making it difficult to achieve a space-efficient shaving blade arrangement within the limited space of the blade housing.
Innovation Solution
The razor cartridge features a blade mounting system with multiple mounting bases spaced apart in the longitudinal direction, each with protrusions that support the shaving blades, allowing for a wider transverse interval between protrusions, which simplifies manufacturing while maintaining effective blade support and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the transverse interval between mounting protrusions is narrowed to achieve space-efficient blade arrangement, then the blade housing space utilization is improved, but the manufacturing difficulty increases significantly
Solution Approach 1:
The mounting base is segmented into multiple independent mounting protrusions, each capable of supporting a shaving blade. This segmentation allows each protrusion to be manufactured independently with standard dimensions, avoiding the need to manufacture a single complex base with narrowly spaced protrusions. The mounting bases can be produced separately and then assembled or integrated into the blade housing, significantly simplifying the manufacturing process while maintaining space-efficient blade arrangement.
2Productivity
If multiple shaving blades are arranged within limited blade housing space, then the shaving efficiency is improved, but the transverse interval between mounting protrusions must be reduced
Solution Approach 1:
Instead of arranging multiple mounting protrusions closely in the transverse direction on a single base, the design utilizes the longitudinal dimension by spacing multiple mounting bases apart from each other. Each mounting base has its own protrusions, and the bases are arranged sequentially in the longitudinal direction of the blade housing. This dimensional shift allows multiple blades to be accommodated while maintaining manufacturable transverse intervals on each individual base.
3Ease of manufacture
If the transverse interval between mounting protrusions is maintained at a manufacturable width, then the ease of manufacture is improved, but the space efficiency for blade arrangement decreases
Solution Approach 1:
Multiple mounting bases, each with standard-sized protrusions spaced at manufacturable intervals, are combined along the longitudinal direction of the blade housing. This merging of multiple independently manufacturable units achieves the overall space-efficient blade arrangement while each individual base maintains ease of manufacture. The cumulative effect of multiple bases in series provides the necessary blade capacity without requiring any single base to have narrowly spaced protrusions.
Data Source
AI summary
According to one embodiment, a razor cartridge includes a shaving blade including a base portion and an edge portion with a cutting edge, and a blade housing including a blade mounting system to accommodate the shaving blade in a longitudinal axis corresponding to a width direction of the blade housing. The blade mounting system includes: multiple mounting bases disposed to be spaced apart from each other along the longitudinal axis; and a plurality of mounting protrusions, at least one of the mounting protrusions protruding from a corresponding one of the multiple mounting bases. The base portion of the shaving blade is supported by mounting protrusions protruding from different ones of the multiple mounting bases.