Impact Tool Vibration Isolation via Movable Grip Housing
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Solution Overview
Problem
Impact tools, such as impact wrenches and drivers, generate significant vibrations during operation, leading to discomfort and potential malfunctions due to the transmission of these vibrations to the grip housing.
Innovation Solution
Incorporating vibration-isolating members between the main-body housing and the grip housing, utilizing rubber and spring components to absorb and attenuate vibrations in both axial and rotational directions, thereby reducing the transmission of vibrations to the grip housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If vibration-isolating members are added between the main-body housing and grip housing, then vibration transmission is reduced, but device complexity increases
Solution Approach 1:
Vibration-isolating members are introduced as intermediary elements between the main-body housing and grip housing. These members act as mediators that absorb and attenuate vibration energy, preventing direct transmission of harmful vibrations to the grip housing while maintaining the structural connection between components.
Solution Approach 2:
The vibration-isolating members utilize composite material properties, combining elastic and damping characteristics to effectively reduce vibration transmission. The members are designed with material composition that provides both structural support and vibration attenuation capabilities.
2Object-affected harmful factors
If the grip housing is coupled movably to the main-body housing, then vibration isolation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The grip housing is coupled to the main-body housing in a movable manner, allowing dynamic adjustment and movement relative to the main body. This dynamic coupling enables the system to adapt to vibration forces while maintaining proper alignment and connection, reducing the impact of manufacturing tolerances through controlled movement.
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
Effectively reduces the transmission of vibrations to the grip housing, enhancing user comfort and reducing the likelihood of malfunctions in the impact tool's components, particularly the controller, while maintaining a compact design.
Implementation Method 1
one or more vibration-isolating members, which is (are) disposed between the main-body housing and the grip housing
Implementation Method 2
utilizing rubber and spring components to absorb and attenuate vibrations
Implementation Method 3
utilizing rubber and spring components to absorb and attenuate vibrations
Data Source
AI summary
An impact tool (1) includes: a motor (10); an impact mechanism (15), which is rotatable about an output rotational axis (BX) and is driven by the motor; an anvil (16) having an anvil shaft (113) disposed forward of the impact mechanism; and at least one anvil projection (114) protruding radially outward from a rear-end portion of the anvil shaft and configured to be impacted by the impact mechanism in a rotational direction; a hammer case (6) housing the impact mechanism; a main-body housing (2) disposed rearward of, and fixed to, the hammer case; a grip housing (3) having at least a portion disposed rearward of the main-body housing, the grip housing being coupled to the main-body housing so as to be movable relative to the main-body housing; and at least one vibration-isolating member (138, 139) disposed between the main-body housing and the grip housing.