Multi-Use Shaving Implement with Swappable Cartridges
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Solution Overview
Problem
Existing shaving implements, such as wet shave razors and trimmers, are not effectively designed for both shaving and trimming longer hair, often requiring awkward handling, risking damage during storage or transport, and are unbalanced or oversized.
Innovation Solution
A multi-use shaving device with an elongated handle featuring a swappable razor cartridge and trimmer head, where the razor cartridge is pivotable and the trimmer head includes a motor-driven reciprocating mechanism with teeth for scissoring action, allowing for interchangeable use as a wet shave razor or trimmer without compromising handle balance or stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a trimmer is permanently attached to the handle, then the device can trim longer hair, but the handle becomes exceptionally large and unbalanced
Solution Approach 1:
The device is divided into separate functional modules: a handle and interchangeable cartridges (razor cartridge and trimmer cartridge). This segmentation allows the trimmer to be detached when not needed, maintaining handle balance and ergonomics while providing trimming capability when required.
Solution Approach 2:
The cartridge configuration is made dynamic and interchangeable rather than fixed. The user can switch between razor cartridge and trimmer cartridge based on needs, and the trimmer cartridge is designed to be removable to maintain proper handle balance during storage and transport.
2Volume of moving object
If the trimmer is positioned in a precarious location on the handle, then space is saved, but the trimmer risks accidental breakage during storage or transport
Solution Approach 1:
The trimmer is segmented into a separate removable cartridge that can be securely stored in a dedicated compartment within the handle, protecting it from damage during storage and transport while maintaining device compactness.
Solution Approach 2:
The handle includes a dedicated storage compartment designed to securely hold the trimmer cartridge, providing protection against accidental breakage during storage and transport before the trimmer is actually used.
3Volume of moving object
If the user must hold the handle upside down or backwards to use the trimmer, then the device can be compact, but the ease of operation deteriorates
Solution Approach 1:
Instead of requiring the user to hold the handle in an inverted or unconventional position to use the trimmer, the trimmer cartridge is designed to be attached to the handle in a standard ergonomic position, allowing natural and comfortable operation during trimming.
4Adaptability or versatility
If a single device combines both razor and trimmer functions, then versatility improves, but device complexity increases
Solution Approach 1:
A single handle is designed to accept both razor cartridges and trimmer cartridges, providing multi-functionality through a universal attachment interface. This allows one handle to serve multiple purposes while maintaining relatively simple structure through modular cartridge design.
Solution Approach 2:
The complex trimming and shaving functions are segmented into separate interchangeable cartridges, allowing each cartridge to be optimized for its specific function while sharing a common handle interface, thereby managing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient trimming and shaving of various hair lengths without the need for awkward handling, preventing damage and maintaining ergonomic balance, allowing users to switch between functions seamlessly.
Implementation Method 1
The trimmer head also includes a prong that extends therefrom. During use of the trimmer, the motor (when activated) is in contact with the prong such that the motor reciprocally moves the prong and, accordingly, the movable blade relative to the stationary blade.
Data Source
Figure 1~4
Figure 5
AI summary
A multi-use shaving implement (10) includes an elongated handle (12) and swappable razor cartridge (14) and trimmer head (16). The elongated handle has a powered motor (18) that is at least partially located therein. The razor cartridge has at least one elongated blade (36) with a sharpened cutting edge (38) and is removably attachable to the handle. The trimmer head has at least one stationary blade (40), one movable blade (42) and is also removably attachable to the handle when the razor cartridge is not attached to the handle. The trimmer head also includes a prong (46) that extends therefrom. During use of the trimmer, the motor (when activated) is in contact with the prong such that the motor reciprocally moves the prong and, accordingly, the movable blade relative to the stationary blade, thus enabling the user to trim hair.