Pyrotechnic Driving Device Slide Adjustment
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Solution Overview
Problem
Existing hand-held driving-in devices with propelling charges lack a simple and adjustable mechanism to modify the drive-in energy, limiting their versatility and effectiveness.
Innovation Solution
A driving-in device with a slide that completely encircles the central axis, allowing for mechanical stability and wide control range adjustment, featuring a modifiable blow-off channel that can be adjusted axially and circumferentially to modify the drive-in energy by expanding the combustion chamber volume, and an operating unit that can be pivoted for intuitive energy adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a valve-like slide is adjusted perpendicular to the driving-in axis to modify dead space volume, then the drive-in energy can be adjusted, but the mechanical stability and control range are limited
Solution Approach 1:
The slide is changed from a valve-like structure adjusted perpendicular to the axis into a circumferentially adjustable structure that rotates about the central axis. This dimensional change from radial adjustment to rotational adjustment provides both mechanical stability (the slide remains axially positioned) and wide control range (circumferential rotation allows precise control of blow-off channel release).
2Adaptability or versatility
If the combustion chamber volume is modified to adjust drive-in energy, then the energy range is expanded, but the device complexity increases
Solution Approach 1:
The slide is designed to serve multiple functions simultaneously: it guides the piston element during its movement, it controls the release of the blow-off channel, and it allows adjustment of the combustion chamber volume. This multi-functionality achieves wide energy adjustment range without proportionally increasing device complexity, as one component performs multiple critical roles.
Solution Approach 2:
The guiding function for the piston and the control function for the blow-off channel are merged into a single slide structure. This integration reduces the number of separate components needed, maintaining structural simplicity while achieving comprehensive control over the drive-in energy through combined piston guidance and channel release mechanisms.
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
Enables precise and adjustable drive-in energy modification, enhancing the device's versatility and usability, even under adverse conditions, by allowing a broad range of energy adjustments and maintaining mechanical stability.
Implementation Method 1
after the ignition of a pyrotechnical charge, the resulting combustion gases expand in a combustion chamber
Data Source
AI summary
A driving device is provided comprising a hand-held housing with a piston member arranged therein for transmitting energy to a securing element to be driven in; an interchangeable propellant charge and a combustion chamber arranged between the propellant charge and the piston member, the combustion chamber extending around a central axis (A); and an actuator, by which the energy transmitted by the propellant charge to the piston member can be variably adjusted. The driving device also includes a blow-off channel connected to the combustion chamber that can be exposed by a movable slide of the actuator and the movable slide comprises a body which completely encircles the central axis (A).