Fastener Driving Device Transport Slide Adjustment
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Solution Overview
Problem
Existing hand-held tackers require the drive spring to remain tensioned even after the tool is lifted off a structural element, preventing the spring from relaxing without ejecting a fastening element, which is inefficient for tools with higher setting energy.
Innovation Solution
An adjusting device controlled by a pressing element allows the transport slide to be displaced against the force of the transport spring, enabling the removal of a fastening element from the receiving space when the tool is lifted, and a counter-slide or traction means facilitate this movement, ensuring the drive spring can relax without ejecting the fastener.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the drive spring remains tensioned after the tool is lifted off a structural element, then the driving ram can be quickly returned to its initial position, but the drive spring cannot relax without ejecting a fastening element, causing energy wastage and operational inefficiency
Solution Approach 1:
The transport slide is moved in advance to the retraction position before the driving ram completes its return journey, thereby preparing the receiving space to accept a returning fastening element without obstruction, and enabling the drive spring to relax fully without energy wastage
Solution Approach 2:
The transport slide acts as an intermediary mechanism that decouples the return motion of the driving ram from the ejection of fastening elements, allowing the drive spring to relax while the transport slide manages the fastening element positioning separately
2Device complexity
If the transport slide remains in its initial position, then the structure is simpler, but the drive spring must remain tensioned to prevent the driving ram from returning, reducing operational efficiency
Solution Approach 1:
The transport slide is designed to move dynamically between two positions (initial and retraction) based on the operational state of the tool, being actuated by the pressing element when the tool is lifted off the structural element, thereby optimizing both simplicity and efficiency
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 the relaxation of the drive spring without ejecting a fastening element, improving operational efficiency by enabling the tool to return to its initial position without completing the driving process, thus preventing unnecessary tensioning and energy wastage.
Implementation Method 1
a drive spring element (31) which acts on the driving ram (13) with a force in the driving direction (27)
Implementation Method 2
the drive spring having to remain tensioned
Implementation Method 3
acted upon elastically by a transport spring element (64)
Implementation Method 4
against the force of the transport spring element
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to a hand-held driving tool for fasteners (60), comprising a driving plunger (13) movably mounted in a guide and a terminal section (15) in which a driving channel (16) with a receiving chamber (17) for a fastener (60) is arranged. The driving tool further comprises a fastener magazine (61) projecting laterally from the terminal section (15), in which a transport slide (63) for fasteners (60), movable in a guide channel (62), can be elastically actuated towards the receiving chamber (17) in the terminal section (15) via a transport spring element (64). A safety device, comprising a pressure element (14) on the terminal section (15), ensures that the driving tool can only be triggered when it has been pressed against a substrate.To improve such a driving device, an adjusting device (40) for the transport slide (63) is provided, which is controlled via the pressure element (14) and by means of which the transport slide (63) can be moved in the guide channel (62) against the force of the transport spring element (64).