Adjustable Overpressure Combustion Driving Tool
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Solution Overview
Problem
Existing driving tools lack flexibility in adjusting driving energy, as they typically rely on fixed overpressure levels, limiting their efficiency and adaptability.
Innovation Solution
Incorporation of a valve member that allows adjustable overpressure control in the combustion chamber, enabling continuous adjustment of driving energy through a switching valve, pressure sensor, or adjustable pressure relief valve, and an electric drive for piston compression, along with an optional external compressor for enhanced overpressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed overpressure level is used in the combustion chamber, then the device structure is simple, but the driving energy adjustment flexibility is limited
Solution Approach 1:
The patent applies the dynamics principle by making the previously fixed overpressure level adjustable. A valve member is introduced to dynamically control the compression ratio of the fuel gas mixture in the combustion chamber, allowing the driving energy to be adjusted according to different working conditions. This transforms the static system into a dynamic one, resolving the contradiction between simplicity and flexibility.
Solution Approach 2:
The patent implements parameter changes by modifying the compression ratio parameter of the fuel gas mixture. Through the valve member, the compression ratio can be varied to change the overpressure level in the combustion chamber, thereby adjusting the driving energy. This directly addresses the need for flexibility while maintaining a relatively simple structural approach.
2Adaptability or versatility
If an adjustable valve member is added to control overpressure, then driving energy flexibility is improved, but the device complexity increases
Solution Approach 1:
The patent applies self-service by designing the valve member to be operable by the user directly, without requiring complex external control systems. The valve member can be manually adjusted or controlled through simple mechanisms already present in the device, allowing the system to regulate its own overpressure level without adding significant control complexity.
3Reliability
If the valve member is closed early during piston movement, then overpressure is reduced for safety, but driving energy is decreased
Solution Approach 1:
The patent uses dynamics by making the valve member timing adjustable. The closure timing of the valve member can be dynamically set based on the piston position and required driving energy. This allows optimization of the balance between safety (pressure control) and performance (driving energy) by adjusting when the valve closes during the compression stroke.
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 provides a high degree of flexibility in driving energy adjustment, allowing for precise control of overpressure, increased driving efficiency, and wider adaptability, even with conventional uncharged devices.
Implementation Method 1
a driving piston (4) guided therein. The fuel gas is compressed in the course of a resetting of the driving piston (4) to an overpressure
Implementation Method 2
A valve member (15) is arranged on the combustion chamber (2) for controlling a release of the compressed fuel gas during an acceleration of the driving piston (4)
Implementation Method 3
The combustible gas can be charged to a positive pressure by combined measures by means of a fan and the stroke of the driving piston in order to increase the driving energy
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a driving-in tool, comprising a driving-in piston (4), guided in a cylinder (3), for driving a nail element into a workpiece, and a combustion chamber (2) which is arranged at the driving-in piston (4) and can be filled with an ignitable fuel-gas mixture. A positive pressure of the fuel-gas mixture in the combustion chamber can be produced by a movement of the driving-in piston (4). At least one of the two, the combustion chamber (2) or the cylinder (3), is connected to an external space via a valve member (15), the positive pressure of the fuel-gas mixture produced by the driving-in piston being selectively adjustable by means of the valve member (15).