Razor Head Trimming Unit Lubricating Strip Fixation
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Solution Overview
Problem
Current manual razors with trimming units have increased manufacturing costs and complexity due to separate structures for fixing the lubricating strip and trimming unit, which complicates the manufacturing process.
Innovation Solution
A razor head design where the trimming unit is arranged along the lengthwise direction of the framework on the side parts, with a receiving groove defined by both the trimming unit and the rear part, using contact portions to clamp the lubricating strip, simplifying the assembly and reducing manufacturing costs by integrating the functions of trimming and lubricating strip fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rear part is configured to provide two separate structures for fixing the lubricating strip and trimming unit respectively, then the lubricating strip and trimming unit can be fixed separately, but the manufacturing technology, manufacturing materials and manufacturing costs are increased
Solution Approach 1:
The patent combines the fixation functions for the lubricating strip and trimming unit into a single integrated structure on the rear part. The receiving groove structure with first and second contact portions serves dual purposes: fixing the lubricating strip along its length while also securing the trimming unit in position. This merging of fixation functions reduces the number of separate structures needed, thereby simplifying manufacturing and reducing costs while maintaining reliable fixation of both components.
2Reliability
If the rear part is configured to provide two separate structures for fixing the lubricating strip and trimming unit respectively, then the lubricating strip and trimming unit can be fixed separately, but the manufacturing costs are increased
Solution Approach 1:
The receiving groove structure on the rear part is designed as a multi-functional component that simultaneously performs multiple fixation tasks. The first contact portion fixes the lubricating strip, while the second contact portion secures the trimming unit. This universal structure eliminates the need for separate fixation mechanisms, reducing manufacturing complexity and cost while ensuring reliable fixation of both the lubricating strip and trimming unit through a single integrated design.
3Device complexity
If the trimming unit is arranged along the lengthwise direction of the framework on the side parts, then the receiving groove can be defined by both the trimming unit and rear part, but the assembly structure becomes more integrated
Solution Approach 1:
The patent segments the receiving groove structure into distinct functional portions: the first contact portion for fixing the lubricating strip and the second contact portion for securing the trimming unit. This segmentation within the integrated structure allows for clear functional differentiation and simplified assembly instructions, making the manufacturing process easier despite the integrated nature of the overall structure. Each contact portion can be independently designed and manufactured to fit its specific component.
Data Source
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AI summary
A razor head 100 having trimming unit includes a framework 10, at least one razor blade 20, a trimming unit 30, and a lubricating strip 50, the framework includes a front part 11, a rear part 12 and two side parts 13, the trimming unit is arranged along a lengthwise direction L of the framework and configured on the two side parts, the trimming unit and the rear part are configured side by side and define a receiving groove 40 together, a side wall of the rear part for defining the receiving groove has a first contact portion 123 extended into the receiving groove, a side wall of the trimming unit for defining the receiving groove has a second contact portion 34 extended into the receiving groove, the second contact portion corresponds to the first contact portion, the lubricating strip is inserted into the receiving groove, and the first and the second contact portions clamp the lubricating strip together.