Gardening Tool Crankcase Grip Integration Vibration Isolation
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Solution Overview
Problem
Existing portable motorized gardening tools are complex to manufacture, not compact enough, and suffer from troublesome vibrations, making them costly and difficult to use effectively.
Innovation Solution
A portable motorized device with a crankcase and grip formed from two symmetrical hollow portions, using elastic elements like coil springs to isolate vibrations and a snap engagement system for tool attachment, allowing for easy assembly and ergonomic control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the crankcase and grip are formed from multiple separate components assembled together, then the device structure is more flexible and easier to manufacture individually, but the overall device complexity increases and compactness is reduced
Solution Approach 1:
The patent combines the crankcase and grip into a single integrated component formed from two hollow substantially symmetrical portions that are joined together. This merging eliminates the need for separate assembly of multiple components while maintaining manufacturing simplicity through symmetrical molding, directly resolving the contradiction between ease of manufacture and device complexity.
2Volume of moving object
If traditional separate component structures are used, then manufacturing flexibility is maintained, but the device is not compact enough and vibrations are troublesome
Solution Approach 1:
By integrating the grip with the crankcase into a single unified structure, the patent achieves a more compact device configuration that reduces overall volume while eliminating gaps and loose connections that generate vibrations, simultaneously addressing both compactness and vibration reduction.
Solution Approach 2:
The patent employs two hollow substantially symmetrical portions that can be made from different materials or composite structures, allowing optimization for both compactness and vibration damping through material selection while maintaining the integrated design.
3Adaptability or versatility
If more component pieces are assembled to form the device, then functional requirements can be met, but the manufacturing cost increases and the device becomes less compact
Solution Approach 1:
The integration of crankcase and grip into one component reduces the total number of parts that need to be manufactured and assembled, directly lowering manufacturing costs while maintaining all necessary functions through the multi-functional design of the unified structure.
Solution Approach 2:
The unified crankcase-grip structure serves multiple functions simultaneously: it provides structural support, houses control means, and acts as the user interface, eliminating the need for separate components and reducing manufacturing complexity and cost.
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 solution results in a compact, easy-to-manufacture, and vibration-reduced device that is cost-effective and easy to use, with improved ergonomics and tool accessibility.
Implementation Method 1
In order to insulate the vibrations caused by the motor 3 inside the crankcase 2, elastic elements are used, like for example coil springs 9, arranged between the motor 3 and the crankcase 2.
Data Source
Figure 1~2
Figure 3~4
AI summary
A portable motorised device (1) for gardening tools comprising a crankcase (2), a motor (3) housed in the crankcase (2), a drive shaft (4) associated with the motor (4) and suitable for actuating a tool, control means (7) of said motor (3), where said crankcase (2) comprises two hollow substantially symmetrical portions (2a, 2b) divided vertically along a plane parallel to the rotation axis of the drive shaft (4), a grip (5; 55) with which the control means (7) of the motor are associated.