Adjustable Multi-Function Grass-Cutting Head
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Solution Overview
Problem
Conventional grass-cutting heads for brushcutters are limited to a single function and require replacement for different operations, leading to the need for multiple accessories and increased user burden.
Innovation Solution
A multi-function grass-cutting head with adjustable cutting elements that can change angular positions, allowing for various cutting effects without replacing the entire head, including oscillating and reversible fixing mechanisms to adapt to different cutting tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the grass-cutting head is designed for single function with fixed cutting elements, then the structure is simple and reliable, but the versatility and adaptability are limited requiring multiple accessories for different operations
Solution Approach 1:
The cutting element support is made adjustable around a transverse axis, allowing the cutting element's angular position to be changed between different stable working positions. This dynamic adjustment capability enables the same head to perform multiple cutting functions (e.g., horizontal cutting, vertical cutting, angled cutting) without requiring multiple fixed heads, thus resolving the contradiction between versatility and structural complexity
Solution Approach 2:
The grass-cutting head is designed with a universal support mechanism that can accommodate different cutting element orientations for various operations. By enabling the support to rotate around a transverse axis and lock at multiple positions, a single head structure achieves multi-functionality that previously required multiple specialized heads, balancing adaptability with structural simplicity
2Ease of operation
If the cutting elements are fixed in position, then the structure is stable and simple, but the operational flexibility and ability to adapt to different cutting tasks are reduced
Solution Approach 1:
The support mechanism transitions from a fixed position to a dynamically adjustable position around a transverse axis. The support can be rotated to different angular positions and locked at stable working positions, providing operational flexibility for various cutting tasks while maintaining structural simplicity through the use of a straightforward rotation and locking mechanism rather than complex adjustment systems
3Adaptability or versatility
If multiple accessories are required for different cutting operations, then each accessory can be optimized for its specific function, but the user burden increases and device complexity multiplies
Solution Approach 1:
Instead of requiring multiple specialized accessories for different cutting operations, the invention makes the single grass-cutting head universal by enabling the support to adjust to different angular positions. This allows one head to perform the functions of multiple heads, reducing the quantity of accessories needed while maintaining the ability to execute various cutting operations effectively
Solution Approach 2:
The invention merges the functionality of multiple specialized cutting heads into a single multi-position adjustable head. By combining the ability to perform horizontal cutting, vertical cutting, and angled cutting in one head through positional adjustment, it reduces the number of separate accessories users must purchase and carry, resolving the contradiction between versatility and quantity of accessories
Data Source
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AI summary
A multi-function grass-cutting head (100), of the type intended to be associated with a motor to rotate around an axis of rotation (X) thereof, comprising a peripheral area (103) which extends around the axis of rotation (X) and at least one supporting portion (104) for at least one cutting element (105) provided on said peripheral area (103). The head also comprises means (106) for adjusting the angular position of said supporting portion (104) of said at least one cutting element (105), around an axis of adjustment (Y), transverse to said axis of rotation (X) of the head.