Hair Clipping Device Eccentric Coupling Mechanism
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Solution Overview
Problem
Conventional hair cutting devices are either unsuitable for cutting fine details due to their large blade assemblies or lack versatility to handle both coarse and fine contours efficiently, requiring users to possess multiple devices for different grooming needs.
Innovation Solution
A hair clipping device with a cutting assembly featuring circumferentially arranged toothed cutting edges and an eccentric coupling mechanism, allowing for 360-degree hair trimming and enabling both fine and coarse contour cutting with the same device by adjusting the orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large cutting blade assembly is used, then coarse contours can be trimmed efficiently, but fine details become difficult to cut
Solution Approach 1:
The cutting blade assembly is divided into multiple blade elements with different sizes and shapes. Each blade element can be selectively positioned at the cutting end to handle different grooming tasks - larger blades for coarse contours and smaller blades for fine details, eliminating the need to choose between efficiency and precision
2Manufacturing precision
If a small cutting blade assembly is used, then fine details can be cut precisely, but coarse contours cannot be trimmed efficiently
Solution Approach 1:
The hair clipping device is designed as a universal grooming tool that can perform multiple functions - trimming both coarse contours and fine details. This is achieved by providing a set of interchangeable blade elements with varying sizes and shapes, allowing a single device to replace multiple specialized trimmers
3Device complexity
If the cutting blade assembly is fixed in a single position, then the device structure is simple, but the device cannot adapt to different cutting orientations
Solution Approach 1:
The cutting blade assembly is made dynamically adjustable rather than fixed. The blade elements can be rotated and repositioned along the longitudinal axis, allowing the device to adapt to different cutting orientations and angles while maintaining a relatively simple overall structure
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 cutting of both fine and coarse hair contours with a single device, improving user convenience and versatility by allowing arbitrary blade orientation and shape design.
Implementation Method 1
the drive shaft is coupled to the moveable blade element via an eccentric coupling mechanism that translates a rotatory movement of the drive shaft into an eccentric movement of the moveable blade element
Data Source
AI summary
The present invention relates to a hair clipping device, comprising: —a housing (12); —a cutting assembly (14) which is arranged on one end of said housing (12) and comprises a stationary blade element (22) with a circumferentially arranged toothed cutting edge (26) surrounding the stationary blade element (22) and a moveable blade element (24) with a circumferentially arranged second cutting edge (28) surrounding the moveable blade element (24), wherein the stationary blade element (22) and the moveable blade element (24) are arranged substantially parallel to each other; and —a motor (34) for driving a drive shaft (36) in a rotatory manner; wherein the drive shaft (36) is coupled to the moveable blade element (24) via an eccentric coupling mechanism (38) that translates a rotatory movement of the drive shaft (36) into an eccentric movement of the moveable blade element (24).