Shaving Device Pivot Mechanism for Blade Surface Rotation
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Solution Overview
Problem
Conventional shaving razors lack a mechanism for easy and efficient rotation of the blade cartridge to alternate cutting surfaces, leading to limited versatility and comfort during shaving.
Innovation Solution
A personal shaving device with a pivotable blade cartridge and handle assembly, featuring a resistive pivot mechanism that allows the blade cartridge to rotate approximately 180 degrees, enabling the user to switch between cutting surfaces and adjust the angle of the razor for optimal shaving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional fixed blade cartridge design is used, then the device structure is simple, but the versatility and adaptability for different skin contours are limited
Solution Approach 1:
The blade cartridge is designed with a pivot mechanism that allows it to rotate approximately 180 degrees relative to the handle, transforming the fixed structure into a dynamic one. This enables the cutting surfaces to be repositioned according to different skin contours and shaving directions, directly resolving the contradiction between versatility and structural simplicity
Solution Approach 2:
The shaving device is divided into separable components: a handle and a blade cartridge that can be selectively coupled and decoupled. The blade cartridge itself contains multiple cutting surfaces that can be independently accessed through rotation, allowing the user to switch between different cutting edges without replacing the entire cartridge, thus improving versatility while maintaining reasonable complexity
2Ease of operation
If the blade cartridge is made pivotable to rotate 180 degrees, then the ease of operation for switching cutting surfaces is improved, but the device complexity increases due to the pivot mechanism
Solution Approach 1:
The pivot mechanism is designed to allow the blade cartridge to rotate and lock into position through user-applied force alone, without requiring additional actuators, motors, or complex locking mechanisms. The mechanism serves itself by using the natural rotation motion to engage the cutting surface, simplifying the operation while maintaining the pivot functionality
Solution Approach 2:
A pivot mechanism acts as an intermediary between the handle and the blade cartridge, enabling the rotation function. This intermediary component facilitates the switching of cutting surfaces while isolating the complexity of the rotation mechanism from both the handle and the cartridge structures, making the overall system easier to operate despite the added mechanical element
3Duration of action of moving object
If multiple cutting surfaces are included on the blade cartridge, then the duration of action is extended, but the manufacturing precision requirements increase
Solution Approach 1:
The blade cartridge is designed with multiple cutting surfaces that can all be used from a single cartridge unit. Each surface serves the same cutting function but provides extended usage duration by allowing the user to switch surfaces as each becomes dull. This multi-functional design extends the service life of the cartridge without requiring multiple separate cartridges, thereby extending duration of action while keeping manufacturing processes standardized
Data Source
AI summary
A shaving device comprising a head assembly including a support member having at least one support member magnet and a blade cartridge having at least one face with at least one razor blade and configured to be rotatably coupled to the support member about a pivot axis. The blade cartridge includes at least one blade cartridge magnet having a pole aligned with a pole of the support member magnet to generate a magnetic force that urges the blade cartridge about the pivot axis towards an initial starting position (ISP), wherein the blade cartridge is further configured to rotate about the pivot axis away from the ISP upon application of an external force sufficient to overcome the magnetic force between the support member magnet and the blade cartridge magnet.