Razor Cartridge Docking Structure for Safe Blade Replacement
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Solution Overview
Problem
Existing razor cartridges are difficult to replace due to strong coupling with the razor handle, leading to potential injury from the blade during replacement.
Innovation Solution
The razor cartridge features a blade housing with connectors and docking portions that allow the connecting arms of the razor handle to be accommodated, including a downward slope to facilitate easy separation, reducing friction and enabling easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coupling between the razor handle and the razor cartridge is made strong to prevent injuries during shaving, then the safety and reliability improve, but the ease of operation deteriorates because it becomes difficult to replace the razor cartridge
Solution Approach 1:
The coupling interface is segmented into two distinct functional zones: the docking portion with downward slopes for easy separation, and the connector with retaining structures for secure attachment. This segmentation allows the coupling to provide strong retention during shaving while enabling easy replacement by applying force to specific separation points.
Solution Approach 2:
The docking portion features downward slopes that facilitate separation in the opposite direction of assembly. The connecting arms enter the accommodating space during assembly, but the downward slopes allow them to be easily pushed out in the reverse direction, enabling easy replacement while maintaining strong coupling during normal use.
2Ease of operation
If strong force is applied to separate the razor cartridge from the razor handle, then the ease of operation improves for replacement, but the safety deteriorates because the razor cartridge may slip from the user's hand causing injury
Solution Approach 1:
The docking portion is designed with downward slopes that enable separation by pushing in the opposite direction of assembly. This inversion principle allows users to easily replace the cartridge without applying strong pulling forces, thereby preventing the cartridge from slipping and causing injury while still enabling simple replacement.
Solution Approach 2:
The downward slopes act as an intermediary mechanism that mediates between the strong coupling requirement and the easy replacement requirement. By providing a controlled separation path through the slopes, the design eliminates the need for strong forcing actions that could cause the cartridge to slip, while still allowing easy replacement.
Data Source
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AI summary
A razor cartridge according to an embodiment of the present invention is coupled to a razor handle, and comprises: at least one blade having a cutting edge; and a blade housing which longitudinally accommodates the blade so that the cutting edge is exposed toward the upper front part. The blade housing comprises: a connector which is disposed on the lower surface of the blade housing and forms an accommodation space in which at least a portion of a connecting arm of the razor handle is accommodated; and a docking portion which forms an entrance to the accommodation space in the lower surface of the blade housing and includes a downward slope in the direction opposite the direction in which the connecting arm enters the accommodation space.