Locking Switch for Removable Shaver Head Housing
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Solution Overview
Problem
Existing backshavers require costly replacement of the entire unit when the shaver blades become dulled, rather than allowing for quick and effective blade replacement.
Innovation Solution
A shaver head design featuring a removable upper housing with a locking switch mechanism that allows for easy disengagement and replacement of dulled blades, utilizing a front mating engagement mechanism and a rear engagement catch mechanism for secure reinstallation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire backshaver is replaced when blades become dulled, then the shaver performance is maintained, but the cost and time for replacement increase significantly
Solution Approach 1:
The shaver head is divided into separable components: an upper housing containing the blades and a lower housing containing the motor and electronics. This segmentation allows the upper housing with dulled blades to be removed and replaced independently from the lower housing, enabling quick blade replacement without discarding the entire shaver unit.
Solution Approach 2:
The upper housing containing the blades is extracted as a separate replaceable component. Users can remove the upper housing from the lower housing and replace it with a new unit, effectively extracting only the worn portion rather than the entire shaver assembly.
2Reliability
If the entire backshaver is replaced when blades become dulled, then the shaver performance is maintained, but the cost increases significantly
Solution Approach 1:
The shaver head is divided into separable components: an upper housing containing the blades and a lower housing containing the motor and electronics. This segmentation allows the upper housing with dulled blades to be removed and replaced independently from the lower housing, enabling quick blade replacement without discarding the entire shaver unit.
Solution Approach 2:
The design enables selective discarding of only the worn upper housing containing blades, while the lower housing with motor and electronics is recovered and reused. This reduces material waste and cost compared to replacing the entire shaver.
3Ease of operation
If a removable upper housing design is implemented, then blade replacement becomes quick and effective, but the device complexity increases
Solution Approach 1:
The front engagement and rear engagement mechanisms are combined into a single integrated locking system. The catch mechanism on the upper housing engages with corresponding features on the lower housing at both front and rear, creating a unified locking structure that simplifies the replacement process while maintaining security.
Solution Approach 2:
The locking mechanism is designed to be manually operated by the user through simple pressing actions on the upper housing, eliminating the need for complex tools or mechanisms. The self-latching feature provides secure engagement without requiring additional fastening steps.
Data Source
AI summary
A shaver head has an upper housing having at least one blade secured thereto, a front mating engagement mechanism, and a rear engagement catch mechanism. The shaver head also has a lower housing having a front mating engagement mechanism, and a locking switch secured adjacent the rear edge of the lower housing, the locking switch having a button coupled to a catch which releasably engages the rear engagement catch mechanism.