Driving Tool Reaction Absorbing Mechanism
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Solution Overview
Problem
Existing spring drive type nailing machines face issues where the nose portion of the driving tool separates from the workpiece during operation, leading to insufficient driving force and potential damage to the workpiece, and require strong pressing to prevent reaction, causing operator fatigue.
Innovation Solution
A driving tool with a reaction absorbing mechanism using a balancer and balancer biasing member, where the balancer is biased away from the nozzle, and connected to the plunger through a string-shaped member, allowing the balancer to move in opposition to the plunger's movement, canceling out the reaction force and reducing the pressing force required against the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the nose portion is strongly pressed against the workpiece to prevent reaction, then the driving force is sufficient, but the workpiece can be damaged and the operator gets tired
Solution Approach 1:
The patent applies a balancer mechanism that generates a counterbalancing force to offset the reaction force produced during nail driving. The balancer is biased by a spring member and connected to the plunger through a string-shaped member, creating an opposing force that cancels out the reaction force. This allows the nose portion to maintain sufficient contact pressure without excessive pressing force, preventing workpiece damage while maintaining adequate driving force.
2Force
If the nose portion is strongly pressed against the workpiece to prevent reaction, then the driving force is sufficient, but the operator gets tired
Solution Approach 1:
The balancer mechanism with spring biasing member creates a counterbalancing force that automatically compensates for the reaction force during operation. This reduces the manual pressing force required by the operator, thereby decreasing operator fatigue while maintaining sufficient driving force for effective nail installation.
3Ease of operation
If the nose portion separates from the workpiece due to reaction, then the operator gets less tired, but the driving force becomes insufficient
Solution Approach 1:
The balancer mechanism generates a counterbalancing force that offsets the reaction force, allowing the nose portion to maintain consistent contact with the workpiece throughout the driving operation. This ensures sufficient driving force is transmitted to the nail while the operator experiences reduced fatigue due to the automated force compensation.
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 solution allows for sufficient driving force with minimal pressing force, reducing operator fatigue and preventing damage to the workpiece by effectively absorbing the reaction force during nail driving operations.
Implementation Method 1
a balancer (36) provided to be slidable with respect to a housing (11) of the tool (10); and a balancer biasing member (37) adapted to bias the balancer (36) in a direction away from the nozzle (16)
Data Source
AI summary
A driving tool is provided with a driver for driving out a fastener from a nozzle, a balancer, and a balancer biasing member for biasing the balancer in a direction away from the nozzle. The balancer moves in the direction away from the nozzle by a biasing force of the balancer biasing member when the driver moves toward the nozzle.