Setting Tool Bolt Guide Axial Displacement Mechanism
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Solution Overview
Problem
Existing setting tools for fastening elements in constructional components have complex drive-in depth setting devices with many parts, making adjustments difficult and the removal of bolt guides expensive and cumbersome.
Innovation Solution
The bolt guide forms the dog point and is axially displaced relative to the drive member guide by a simplified drive-in depth setting device, allowing for easy adjustment and removal without additional handles, using a manually operable actuation member and a control link mechanism such as a tooth rack-tooth gear unit or eccentric setting wheel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional drive-in depth setting device with separate dog point component is used, then the drive-in depth can be adjusted, but the device has too many parts and the dismounting of the nose part or bolt guide is expensive and complex
Solution Approach 1:
The patent combines the dog point function directly into the bolt guide component, eliminating the need for a separate dog point part. The bolt guide now serves dual functions: guiding the fastening element and providing the dog point for abutting the workpiece. This merging reduces the total number of parts and simplifies the overall device structure while maintaining drive-in depth adjustment capability through axial displacement of the integrated bolt guide.
2Ease of repair
If the nose part or bolt guide is removed for maintenance or replacement, then repairs can be performed, but the dismounting process is expensive and complex due to multiple components
Solution Approach 1:
By integrating the dog point function into the bolt guide, the patent reduces the number of components that need to be disassembled for maintenance. The simplified construction with fewer parts directly attached to the housing allows for easier and less costly removal and replacement of the bolt guide, improving ease of repair.
Solution Approach 2:
The patent maintains the modular nature of the bolt guide as a separate, removable component from the housing, allowing it to be independently replaced. The axial displacement mechanism enables the bolt guide to be retained in multiple positions while still allowing for complete removal when needed for maintenance or replacement.
3Reliability
If the bolt guide is retained in multiple positions by additional constructional measures, then drive-in depth settings are maintained, but the device complexity increases
Solution Approach 1:
The patent employs a dynamic retention system where the bolt guide can be axially displaced between multiple positions and retained in each position through the drive-in depth setting device. The actuation member allows the bolt guide to move freely along the axial direction while providing positive retention at specific positions, eliminating the need for complex fixed retaining mechanisms.
Solution Approach 2:
The drive-in depth setting device serves dual functions: it controls the axial position of the bolt guide for different drive-in depth settings and simultaneously provides the retention mechanism. The setting device itself creates the retention effect through its structural interaction with the bolt guide, eliminating the need for separate retention components.
Data Source
AI summary
A setting tool for driving a fastening element in a constructional component includes a housing (11), a drive member (13) displaceable in a guide (12) located in the housing, a bolt guide (15) adjoining the drive member guide (12) in direction of the operational axis (A) and forming a dog point (16) for abutting the constructional component and a drive-in depth setting tool (20) for displacing the bolt guide (15) axially relative to the drive member guide (15) for setting a distance between a drive end (14) of the drive member (13) and the dog point (16) in the initial position of the drive member.