Striking Device Vibration Reduction via Dynamic Tuned Mass Damper
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Solution Overview
Problem
Existing impact tools transmit vibration from the striking mechanism to the user's hand, affecting the striking output and user comfort.
Innovation Solution
An impact tool design featuring a striking mechanism connected via a cushioning mechanism and a dynamic vibration reducer, which includes an elastic member and a weight part, reduces vibration transmission by allowing the weight part to reciprocate between the elastic members, thereby stabilizing the striking mechanism and minimizing vibration transfer to the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a striking mechanism is provided to drive the tool accessory in the longitudinal direction, then the hammering operation is enabled, but vibration is transmitted to the user's hand
Solution Approach 1:
The body is divided into a first body element and a second body element, with the striking mechanism provided on the first body element. This segmentation allows the striking mechanism to be isolated from the second body element, reducing vibration transmission to the user's hand while maintaining hammering operation capability.
Solution Approach 2:
A cushioning mechanism is provided between the first body element and the second body element to act as an intermediary that absorbs and reduces vibration. This cushioning mechanism serves as a mediator that allows the striking mechanism to function while preventing excessive vibration from reaching the user's hand.
2Object-affected harmful factors
If the first body element is made movable with respect to the second body element to reduce vibration transmission, then vibration is reduced, but the striking force may be adversely affected
Solution Approach 1:
The cushioning mechanism is pre-configured between the first and second body elements to provide vibration reduction while maintaining striking force. The cushioning mechanism is designed to allow relative movement that reduces vibration transmission without compromising the force transmission needed for effective hammering operation.
3Object-affected harmful factors
If a vibration reducing mechanism is added to the first body element, then vibration is further reduced, but the device complexity increases
Solution Approach 1:
The first body element is designed to be movable with respect to the second body element, creating a dynamic vibration reduction system. This dynamic configuration allows the first body element to move in response to vibration, reducing the transmission of harmful vibrations while maintaining a relatively simple overall structure compared to rigid vibration isolation systems.
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 impact tool effectively reduces vibration transmission to the user while enhancing striking output efficiency, providing a more stable and comfortable operation.
Implementation Method 1
the vibration reducing mechanism is a dynamic vibration reducer. In this case, the dynamic vibration reducer includes an elastic member having a first elastic member disposed on the first body element side and a second elastic member disposed on the second body element side, and a weight part disposed between the first elastic member and the second elastic member
Implementation Method 2
the dynamic vibration reducer includes an elastic member having a first elastic member disposed on the first body element side and a second elastic member disposed on the second body element side
Implementation Method 3
the first body element and the second body element are connected via a cushioning mechanism
Data Source
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AI summary
[Problem] To provide an improved technique with which striking output can be made more efficient. [Solution] The device has a main body 101, and a striking element 140 for driving a distal end tool 119 in a prescribed long-axis direction. The main body 101 has a first main body element 101a to which the striking element 140 is attached, and a second main body element 101b, the first main body element 101a and the second main body element 101b being connected by a cushioning mechanism 300. A vibration suppression mechanism 200 is established for the first main body element 101 a.