Self-Cleaning Blade Set with Tapered Scraper Profile
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hair cutting devices and blade sets face challenges in user comfort, performance, and manufacturing, particularly in achieving precise trimming and shaving operations, with common razors and trimmers being unsuitable for combined tasks and requiring multiple blade sets and drive mechanisms.
Innovation Solution
A hair cutting appliance with a double-walled stationary blade and a movable cutter featuring a scraper profile for self-cleaning, which includes a tapered scraper profile and guide opening to remove debris and improve long-term performance, and a manufacturing method for integrating an intermediate wall to enhance the blade set's strength and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a double-walled stationary blade with guide slot is used to guard the cutter, then cutting precision and safety are improved, but the guide slot becomes hard to reach and difficult to clean manually
Solution Approach 1:
The cutter is equipped with scraping portions that automatically clean the guide slot during the cutting operation. The scraper profile engages with the guide slot walls and removes accumulated dirt and debris through the relative motion between the cutter and stationary blade, enabling self-cleaning without manual intervention.
Solution Approach 2:
The cleaning function is extracted from manual operation and integrated into the cutter itself through the scraping portions. This separates the cleaning action from the guide slot structure and attaches it to the movable cutter component, allowing automatic cleaning during operation.
2Manufacturing precision
If the cutter is arranged in the guide slot without considerable play, then cutting precision is improved, but dirt accumulation in the guide slot accelerates performance degradation
Solution Approach 1:
The scraping portions on the cutter automatically remove dirt and debris from the guide slot during operation. This self-cleaning mechanism prevents accumulation that would otherwise accelerate wear and performance degradation, maintaining reliable cutting action over extended use periods.
3Reliability
If common razors and trimmers use separate blade sets for shaving and trimming, then each function can be optimized, but device complexity and the number of required components increase
Solution Approach 1:
The blade set is designed with a stationary blade that can be oriented in different positions to perform both shaving and trimming functions. The movable cutter and stationary blade combination can be configured for close-cutting shaving operations or longer-length trimming operations, eliminating the need for separate specialized blade sets.
Solution Approach 2:
The stationary blade is designed with flexibility in orientation and positioning, allowing it to adapt to different cutting requirements. The blade can be arranged to expose different portions for shaving versus trimming, providing dynamic versatility without requiring multiple fixed-configurations.
Data Source
AI summary
A cutting appliance, system, method and manufacturing process related to a blade set, a cutter and a stationary blade for the blade set. The cutter includes a main portion, such as a substantially flat main portion obtained from sheet metal material, at least one toothed leading edge protruding from the main portion. The at least one toothed leading edge includes at least two teeth and at least one scraping portion including a tapered scraper profile at least partially extending in a longitudinal direction that is perpendicular to a cutting motion direction of the cutter. The at least one scraping portion may be, in a mounted state, arranged to contact a stationary blade of the blade set at a first wall thereof to scrape off accumulated dirt and debris when the cutter and the stationary blade are moved with respect to each other when in operation.