Modular Personal Care Handle with Interchangeable Motorized Heads
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Solution Overview
Problem
Existing personal grooming devices face challenges in integrating a vibrating safety razor and a hair trimming device due to differing power requirements, leading to inefficient use and exposure of trimmer blades to water during rinsing.
Innovation Solution
A modular personal care apparatus with a common handle and interchangeable operating heads, each equipped with its own electric motor and power source, allowing for optimal performance and water-resistant design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a vibrating safety razor and a hair trimming device are integrated into a single appliance, then the appliance provides multiple functions, but the different power requirements of the motors make it impractical to integrate both functions effectively
Solution Approach 1:
The personal care apparatus is divided into a common handle and separate operating heads. Each operating head (vibrating razor head, trimmer head) contains its own motor and is designed for a specific function. This segmentation allows each motor to be optimized for its specific power requirements while sharing the common handle and battery compartment, resolving the contradiction between multi-functionality and power requirement compatibility.
Solution Approach 2:
The common handle is designed as a universal platform that can accommodate multiple types of operating heads through a standardized mounting interface. The handle includes a battery compartment and electrical contacts that can supply power to different operating heads with varying power requirements. This universality enables the system to provide multiple functions (shaving, trimming) while maintaining optimal performance for each function through dedicated motors in each head.
2Adaptability or versatility
If a trimmer is integrated with a safety razor, then the appliance provides multiple functions, but the trimmer blades are exposed to water during rinsing which is harmful
Solution Approach 1:
The trimmer function is segmented into a separate operating head that can be detached from the handle. When the user rinses the vibrating razor head under water, the trimmer head remains separate and protected from water exposure. This segmentation physically isolates the water-sensitive trimmer blades from the water environment during rinsing operations.
Solution Approach 2:
The trimmer operating head is extracted as a separate, removable component from the handle assembly. This allows the user to detach the trimmer head before rinsing the handle and vibrating razor head, thereby protecting the trimmer blades from water damage. The extracted trimmer head can be stored separately or reattached when needed, maintaining multi-functionality while preventing water exposure.
3Reliability
If different motors with different power requirements are used for vibrating razor and trimmer functions, then each function operates optimally, but integrating them into a single appliance becomes impractical
Solution Approach 1:
Each operating head is equipped with its own dedicated motor, allowing the vibrating razor head to use a motor optimized for high-frequency vibrations and the trimmer head to use a motor optimized for cutting power. This segmentation eliminates the need to compromise motor performance to accommodate different power requirements, as each motor operates independently in its own head while sharing the common handle and power source.
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 the creation of multiple grooming appliances with varying power needs using a single handle, ensuring efficient operation and protection from water exposure, while allowing for convenient and cost-effective production and use.
Implementation Method 1
a battery compartment for accommodating a battery for supply of electric current to the electrical contacts
Implementation Method 2
each of the operating heads including an electric device, and electrical contacts for cooperation with the contacts on the handle for supply of electric current to the electric device when the respective operating head is mounted to the handle; wherein the electrical devices of at least first and second operating heads comprise electric motors
Data Source
Figure 1
Figure 2~3
Figure 4A~4C
AI summary
A personal care apparatus includes a handle housing (2) a rechargeable battery and a plurality of operating heads such as a vibrating safety razor head (4) and a hair trimming device (3) exchangeably mountable on the handle for assembling different hand-held appliances for performing respective body treatments.' A base (1) is included for storing the components of the apparatus when not in use and forms a battery charging device with a socket (6) into which the handle plugs for recharging the battery. The operating heads include electrical devices, in particular electric motors, powered by the battery.