Shaver Head Movable Blade Assembly Eccentric Drive
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Solution Overview
Problem
Conventional shaver heads have complex and fragile connecting parts that lead to poor cutting efficiency and a short service life due to uneven stress on blades, causing damage and impacting performance.
Innovation Solution
A shaver head design featuring a movable blade assembly driven by an eccentric shaft, with a spring assembly that ensures even stress distribution through elastic recovery forces, simplifying the structure and enhancing durability and shaving effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple rotating connectors and blades are used to connect the head, then the cutting function is achieved, but the structure becomes complex and parts become fragile
Solution Approach 1:
The patent merges multiple rotating connectors and blades into a single integrated movable blade assembly that is directly driven by one eccentric shaft. This consolidation eliminates the need for multiple separate connectors and blades, simplifying the overall structure while improving reliability by reducing the number of potential failure points.
Solution Approach 2:
The movable blade assembly serves multiple functions: it acts as both the cutting element and the connecting mechanism between the eccentric shaft and the blade screen. This multi-functional design replaces the conventional separate components (connectors + blades), achieving structural simplification without compromising the cutting function.
2Reliability
If multiple rotating connectors and blades are used, then the cutting function is achieved, but the parts are prone to damage and service life is reduced
Solution Approach 1:
By combining multiple parts into a single movable blade assembly, the patent reduces the total number of components that could potentially fail. This merger directly addresses the reliability issue by minimizing the number of parts that need to withstand operational stresses.
Solution Approach 2:
The patent extracts and eliminates the unnecessary rotating connectors from the conventional design, retaining only the essential cutting function through the movable blade assembly. This removal of redundant components reduces complexity and potential failure points.
3Ease of operation
If conventional blade connecting structures are used, then the head can operate, but flexibility of the head is low
Solution Approach 1:
The patent introduces a movable blade assembly that can dynamically adjust its position and movement in response to the rotation of the single eccentric shaft. This dynamic design replaces the rigid conventional connecting structures, enabling the head to adapt to different shaving conditions and improving flexibility.
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
The design achieves a better beard shaving effect with improved durability and user experience by ensuring even stress on the blades, extending the service life of the shaver head and enhancing cutting efficiency.
Implementation Method 1
the blade holder spring and the body spring in the spring assembly fit with parts of the head, so that during operation of the shaver head, when moving downward under impact of an external force, the movable blade assembly acts on the movable blade holder by using elastic recovery forces of the springs
Implementation Method 2
the movable blade holder is directly driven by using an eccentric shaft, the movable blade holder drives the movable blade assembly to reciprocate
Data Source
AI summary
A shaver head includes a movable blade assembly, a movable blade holder, a spring assembly, a blade screen support, and a blade screen. An upper end of the movable blade holder is fastened to the movable blade assembly, a bottom surface of the movable blade holder is connected to the spring assembly, the spring assembly is fastened to the blade screen support, the blade screen support is connected to the blade screen, and an inner surface of the blade screen abuts against the movable blade assembly. A blade holder spring and a body spring in the spring assembly fit with parts of the head, so that during operation of the shaver head, when moving downward under impact of an external force, the movable blade assembly acts on the movable blade holder by using elastic recovery forces of the springs.