Impact Tool Counterweight Mechanism for Vibration Control
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Solution Overview
Problem
Conventional impact tools with vibration control mechanisms suffer from inefficient vibration reduction due to friction between springs and the housing, leading to increased tool size and vibration persistence.
Innovation Solution
The impact tool incorporates a counterweight mechanism positioned between the motor and handle, utilizing a counterweight and support members to reduce vibrations without increasing the tool's size, with the counterweight's center of gravity aligned closer to the reciprocating motion converter to minimize rotational moment and friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a counterweight mechanism is added to reduce vibration, then vibration reduction efficiency improves, but the tool size increases
Solution Approach 1:
The counterweight mechanism is nested within the existing housing structure by positioning it in the confrontation section between the motor and handle. This allows the vibration control function to be integrated into the existing tool volume without requiring additional external space, thereby resolving the contradiction between vibration reduction and tool size.
Solution Approach 2:
The counterweight is positioned in the confrontation section along the longitudinal axis of the tool, utilizing the existing spatial dimension. By aligning the counterweight's center of gravity closer to the reciprocating motion converter, the mechanism achieves effective vibration counterbalancing within the existing tool length, avoiding volume increase.
2Object-affected harmful factors
If the counterweight is positioned away from the reciprocating motion converter, then vibration control housing space is available, but friction increases and vibration reduction efficiency decreases
Solution Approach 1:
The counterweight mechanism uses a counterweight element that reciprocates in opposition to the piston's motion. By positioning the counterweight's center of gravity closer to the reciprocating motion converter, the system achieves more effective counterbalancing of vibrational forces, reducing the friction between springs and housing while improving vibration reduction efficiency.
3Object-affected harmful factors
If the counterweight's center of gravity is aligned closer to the reciprocating motion converter, then vibration reduction efficiency improves, but the rotational moment increases
Solution Approach 1:
The counterweight is designed with a specific mass distribution where the center of gravity is positioned closer to the reciprocating motion converter. This local concentration of mass optimizes the counterbalancing effect for vibration reduction while the overall counterweight mechanism is configured to manage the rotational moment through proper mounting and support structures.
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 configuration effectively reduces vibrations by aligning the counterweight's resonance frequency with the tool's operational frequency, stabilizing the counterweight's vibration and maintaining a compact tool design without size enlargement.
Implementation Method 1
aligning the counterweight's resonance frequency with the tool's operational frequency
Implementation Method 2
reduce vibrations by aligning the counterweight's resonance frequency with the tool's operational frequency, stabilizing the counterweight's vibration
Implementation Method 3
The reciprocating motion converter is configured to convert the rotational drive force of the motor to a reciprocating motion reciprocating in directions perpendicular to the rotation shaft of the motor
Implementation Method 4
The reciprocation motion of the piston repeatedly increases and decreases the pressure of the air in the air chamber, thereby applying an impact force to the striking member
Implementation Method 5
when the piston moves forward, the counterweight moves rearward because the space formed by the piston, the cylinder, the impact housing, the counterweight, and the vibration control housing is a sealed space
Data Source
AI summary
An impact tool is provided that can efficiently reduce the vibration resulting from the striker and that does not lead to a larger design even with the use of a counterweight mechanism. A counterweight mechanism is provided in a motion converter housing, facing the handle. The counterweight mechanism is positioned between a center of gravity of the impact tool and the grip of the handle and is positioned above the control substrate. The counterweight mechanism is equipped with a first support, a second support, a weight support member, and a counterweight.