Impact Tool Idling Mechanism for Cushioning Striking Force
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing impact tools face issues where the impact bolt continues to be driven after the tool accessory is separated from the workpiece, leading to unnecessary hammering operations due to the bouncing off of the striker and impact bolt.
Innovation Solution
An impact tool design featuring a striker that linearly moves in the longitudinal direction, an impact bolt that transmits striking force to the tool accessory, a tool accessory holder, a retainer to prevent the tool accessory from coming off, and an elastic element connecting the holder and retainer, allowing the retainer to move and cushion the striking force in the idling state, preventing the striker from being driven again.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If rubber cushioning members are provided to cushion the impact of the impact bolt, then the impact is cushioned, but the impact bolt is bounced off toward the striker and continuously driven even when the tool accessory is separated from the workpiece
Solution Approach 1:
The cushioning function is divided into two independent systems: a first cushioning member (rubber ring) between the impact bolt and tool holder, and a second cushioning member (elastic element) between the tool accessory holder and tool accessory retainer. This segmentation allows each cushioning member to handle specific aspects of impact absorption, preventing the bouncing-off problem that occurs when a single cushioning system is used alone.
Solution Approach 2:
The tool accessory retainer acts as an intermediary component that introduces a new cushioning mechanism. When the impact bolt collides with the tool holder, the retainer moves relative to the holder via the elastic element, absorbing the impact energy and preventing the impact bolt from bouncing back toward the striker, thus stopping continuous driving.
2Object-affected harmful factors
If the tool accessory retainer is made movable relative to the tool accessory holder, then the striking force is cushioned and the striker is prevented from being driven again, but the structure becomes more complex
Solution Approach 1:
The tool accessory retainer serves multiple functions: it retains the tool accessory on the holder, cushions the striking force through relative movement, and prevents the impact bolt from bouncing back. The elastic element simultaneously acts as a cushioning member and a return mechanism. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in 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
The solution effectively prevents the impact bolt from being bounced off and driven in the idling state, allowing for immediate resumption of hammering operations by ensuring the impact bolt does not contact the tool accessory holder, thus optimizing the tool's operational state.
Implementation Method 1
an elastic element that connects the tool accessory holder and the tool accessory retainer such that the tool accessory holder and the tool accessory retainer can move in a longitudinal direction with respect to each other
Implementation Method 2
the tool accessory retainer moves with respect to the tool accessory holder by movement of the tool accessory in the longitudinal direction, so that the striking force is cushioned
Data Source
AI summary
It is an object of the invention to provide an impact tool having a rational mechanism in an idling state. According to the representative invention, in an idling state defined as a state in which a tool accessory 119 is not pressed against a workpiece and an impact bolt 145 transmits a striking force to the tool accessory 119, the tool accessory retainer 510 moves with respect to a tool accessory holder 117 by movement of the tool accessory 119 in the longitudinal direction, so that the striking force is cushioned.