Elastic Handle Isolation for Impact Tool Vibration Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vibration-proofing structures in impact tools, such as electric hammers, do not adequately reduce vibration transmission from the tool body to the handle, affecting user comfort and tool operation.
Innovation Solution
The impact tool incorporates a handle design with a first part connected to the tool body via an elastic member, allowing movement and reducing vibration transmission, while a current supply cable is routed on the handle to maintain rational routing and proximity to the motor, and a coupling member, like a bellows, seals and allows movement between handle parts, providing dust protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the handle is rigidly connected to the tool body, then structural stability is improved, but vibration transmission to the handle increases
Solution Approach 1:
The handle is divided into a first part and a second part, with the grips attached to the first part. This segmentation allows the handle to be differentially connected to the tool body - the first part via elastic members for vibration isolation, and the second part rigidly for structural support, thereby resolving the contradiction between stability and vibration reduction.
Solution Approach 2:
Elastic members are introduced as intermediary elements between the first part of the handle and the tool body. These elastic members act as mediators that transmit necessary mechanical support while filtering out harmful vibrations, thus reducing vibration transmission to the grips while maintaining structural stability.
2Ease of manufacture
If the current supply cable is routed on the handle, then routing efficiency is improved, but the handle structure becomes more complex
Solution Approach 1:
The current supply cable routing is merged with the existing handle structure by installing the cable on the second part of the handle. This integration approach allows efficient cable routing to reach the motor without requiring separate cable management components, thereby improving routing efficiency while minimizing additional structural complexity.
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
This design effectively reduces vibration transmission to the handle, improves user comfort, and maintains efficient current supply routing while providing a dust-proofing mechanism, enhancing the overall performance and usability of the impact tool.
Implementation Method 1
transmission of vibration from the tool body to the first part and the grip is reduced by the elastic member
Data Source
AI summary
An object of the invention is to provide an impact tool improved in vibration-proofing structure of a handle. A representative impact tool has a tool body and handle. The handle has a handle body and pair of grips that extend in a direction crossing an axial direction of a tool accessory, designed to be held by user's right and left hands. The handle body has a first part to which the grips are connected in a fixed manner and a second part that is connected to the tool body in a fixed manner. The first part is supported against the tool body via an elastic member and is allowed to move with respect to the tool body and the second part while being biased by an elastic force of the elastic member. A current supply cable, supplying current to a motor, is installed on the second part.