Reciprocating Tool Handle Coupling for Compact Vibration Isolation
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Solution Overview
Problem
Existing reciprocating tools with vibration-isolating handle structures require a large area in the front-rear direction due to the alignment of coupling and elastic members, leading to increased tool length and potential for larger vibrations.
Innovation Solution
A reciprocating tool design where the body housing and handle member are coupled via movable coupling parts with an elastic member disposed within an internal space, allowing for relative movement in the front-rear direction while minimizing the overall tool size and absorbing dominant vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the coupling structure and elastic member are aligned in the front-rear direction, then the vibration isolation function is achieved, but the tool length in the front-rear direction increases
Solution Approach 1:
The elastic member is disposed inside the coupling structure's internal space, nesting one component within another. Specifically, the elastic member is positioned within the internal space defined by the coupling structure, allowing both components to occupy the same spatial envelope rather than requiring separate linear spaces, thereby reducing the overall front-rear length while maintaining vibration isolation functionality
Solution Approach 2:
The design transitions from a one-dimensional linear arrangement (coupling structure and elastic member aligned in front-rear direction) to a three-dimensional integrated configuration. The coupling structure's internal space accommodates the elastic member in a spatial arrangement that utilizes depth and width dimensions, effectively packing components more efficiently and reducing the front-rear projection length
2Object-affected harmful factors
If the handle and body housing are designed to be relatively movable by a larger amount, then the vibration isolation performance is improved, but the tool length in the front-rear direction will increase
Solution Approach 1:
The elastic member is disposed inside the coupling structure's internal space, nesting one component within another. Specifically, the elastic member is positioned within the internal space defined by the coupling structure, allowing both components to occupy the same spatial envelope rather than requiring separate linear spaces, thereby reducing the overall front-rear length while maintaining vibration isolation functionality
Solution Approach 2:
The design allows for larger relative movement between the handle member and body housing by optimizing the elastic member's properties and the coupling structure's geometry. The internal space configuration enables greater stroke or displacement amplitude without proportionally increasing the external dimensions, as the movement occurs within the nested arrangement rather than requiring additional linear space
3Ease of manufacture
If the coupling structure and elastic member are arranged side by side, then the assembly is simple, but the area in the front-rear direction becomes large
Solution Approach 1:
The elastic member is disposed inside the coupling structure's internal space, nesting one component within another. Specifically, the elastic member is positioned within the internal space defined by the coupling structure, allowing both components to occupy the same spatial envelope rather than requiring separate linear spaces, thereby reducing the overall front-rear length while maintaining vibration isolation functionality
Solution Approach 2:
The coupling structure and elastic member are merged into a single integrated assembly where the elastic member is housed within the coupling structure's internal space. This combining of functions and components into one compact unit simplifies the overall assembly process while reducing the spatial footprint in the front-rear direction
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 absorbs vibrations, reduces tool size, and allows for greater relative movement without increasing the tool's front-rear dimensions, enhancing ease of assembly and reducing vibration transmission.
Implementation Method 1
The elastic member is configured to bias the body housing and the handle member away from each other in the front-rear direction
Data Source
AI summary
A reciprocating tool includes a body housing, a handle member and an elastic member. A first one of the body housing and the handle member includes a first coupling part, while a second one includes a second coupling part. The first coupling part includes an internal space, and an opening that communicates with the internal space and an outside space of the first coupling part. At least a portion of the second coupling part protrudes into the internal space through the opening and is movable relative to the first coupling part in the front-rear direction within the opening. The elastic member is disposed in the internal space and is configured to bias the first coupling part and the second coupling part such that the body housing and the handle member are biased away from each other in the front-rear direction.