Brush Cutter Handle Mount With Vibration-Absorbing Floating Box
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brush cutters face challenges in effectively suppressing vibration transmission from the drive unit or working unit to the handle, as previously disclosed solutions do not adequately address this issue.
Innovation Solution
A brush cutter design incorporating a vibration absorbing member that fits within the tubular portion and floating box, featuring an inner and outer peripheral surface, ribs, and stopper portions to absorb and distribute vibration, thereby reducing its transmission to the handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a resin bush is integrally attached to the shaft inside the tubular portion, then vibration generated in the shaft is suppressed, but vibration transmitted from the drive unit or working unit to the tubular portion is not effectively suppressed from being transmitted to the handle
Solution Approach 1:
The patent introduces a vibration absorbing member as an intermediary component between the tubular portion and the floating box. This member includes a vibration absorbing material (such as foam or rubber) that acts as a mediator to absorb and dampen vibrations transmitted from the drive unit or working unit before they reach the handle, effectively resolving the contradiction by providing a dedicated vibration isolation interface.
Solution Approach 2:
The vibration absorbing member combines different materials with complementary properties: a rigid outer structure (the fitting portion with inner and outer peripheral surfaces) that provides structural support and positioning, and a soft vibration absorbing material (foam or rubber) that dissipates vibrational energy. This composite structure enables both mechanical support and effective vibration suppression, addressing the inadequacy of单一材料 solutions.
2Object-affected harmful factors
If vibration absorbing material is integrally provided inside the gripping rod, then damping vibrations is achieved, but vibration transmission from drive unit to tubular portion is not adequately suppressed
Solution Approach 1:
The patent divides the vibration isolation function into distinct segments: the vibration absorbing member is separated from both the tubular portion and the floating box, fitting between them as an independent component. This segmentation allows the vibration absorbing material to be optimally positioned and shaped without compromising the structural integrity or manufacturing simplicity of the main components, achieving effective vibration damping while maintaining device simplicity.
3Object-affected harmful factors
If an anti-vibration structure is provided for the operation lever, then vibration at the operation lever is reduced, but overall vibration transmission to the handle remains problematic
Solution Approach 1:
Instead of applying vibration isolation measures only at the operation lever level (one-dimensional approach), the patent implements a comprehensive vibration absorbing member that spans the connection between the tubular portion and the floating box. This multi-dimensional approach addresses vibration transmission along the entire power transmission path, ensuring both operation lever stability and handle comfort simultaneously.
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 effectively suppresses vibration transmission from the drive unit or working unit to the handle, enhancing user comfort and reducing discomfort during operation.
Implementation Method 1
a vibration absorbing member which fits in a tubular portion side fitting portion provided in the tubular portion and fits in a box side fitting portion provided in the floating box
Implementation Method 2
the vibration absorbing member includes: an inner peripheral portion of which an inner peripheral surface abuts on the tubular portion side fitting portion; an outer peripheral portion of which an outer peripheral surface abuts on the box side fitting portion
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This brush cutter (1) includes: a drive unit (10); a working unit (20) which is driven by power of the drive unit (10); a shaft (30) which transmits the power of the drive unit (10) to the working unit (20); a tubular portion (40) which is disposed between the drive unit (10) and the working unit (20), and in which the shaft is inserted; a floating box (50) which has a handle support portion (51); and a handle (90) which is supported by the handle support portion. The brush cutter (1) is provided with a vibration absorbing member (60) which fits in a tubular portion side fitting portion (tubular portion side fitting portions 41a, 42a) provided in the tubular portion and fits in a box side fitting portion (box side fitting portion 52) provided in the floating box.