Hammer Head Fastening for Self-Orienting Undercut Groove Mounting
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Solution Overview
Problem
Existing fastening arrangements with undercut grooves and through openings require complex orientation of hammer head screws, necessitating a predefined angular position for successful alignment and orientation, which complicates the mounting process.
Innovation Solution
A fastening device featuring a hammer head element with orienting contours that can be rotated independently of its axis, allowing for simple pressing onto the groove without prior orientation, combined with a holding element that can be screwed to it, enabling unrestricted rotation and easy introduction into the groove.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional groove block or hammer head screw is used, then the fastening can be achieved, but the component must be oriented in a predefined angular position (45 degrees for hammer head screw) before insertion, which complicates the mounting process
Solution Approach 1:
The groove block features an asymmetric geometry with a groove opening at one end and a closed end, allowing it to be inserted into the profile groove in only one orientation. This asymmetric design eliminates the need for predefined angular positioning during mounting, as the component self-orientates upon insertion.
Solution Approach 2:
The groove block is designed to self-orientate and self-position within the profile groove during insertion. The asymmetric groove geometry automatically guides the component into the correct orientation without requiring external alignment tools or predefined angular positioning by the installer.
2Productivity
If a hammer head screw with orienting bevels is used, then angular momentum can be generated for automatic rotation, but the screw must still be placed within a predefined angular range of 45 degrees to work effectively
Solution Approach 1:
The groove block's asymmetric design with a single opening end and closed end creates a unique geometric signature that must be inserted in a specific orientation. This eliminates the need for angular momentum generation and predefined angular placement ranges, as the component simply cannot be inserted correctly unless oriented properly from the start.
Solution Approach 2:
Instead of using a screw that rotates automatically after insertion (requiring preliminary angular placement), the groove block is designed to be inserted directly in its final orientation. The inversion approach eliminates the rotation step entirely by requiring correct initial placement, which is simplified by the asymmetric geometry providing clear orientation cues.
3Reliability
If precise orientation is required for fastening components, then secure fixation can be achieved, but the mounting process becomes more time-consuming and complex
Solution Approach 1:
The asymmetric groove block design provides inherent orientation guidance through its unique geometry, ensuring secure fixation is achieved only when inserted in the correct orientation. This eliminates time-consuming alignment procedures while maintaining reliable fastening, as the component physically cannot be inserted incorrectly.
Solution Approach 2:
The groove block self-orientates during insertion due to its asymmetric geometry, automatically achieving the correct orientation for secure fixation without requiring external alignment tools, measurement devices, or complex positioning procedures by the installer.
Data Source
AI summary
A fastening arrangement may include a first component having an undercut groove, and a second component having a through opening. The second component may be couplable on the first component via a fastening device configured to be guided through the through opening and engage the undercut groove. The fastening device may have an axis oriented perpendicularly to the undercut groove. The fastening device may include a hammer head element and a holding element. The hammer head element and the holding element coupled thereto may be rotatable about the axis in an unrestricted manner when mounted on the second component. The hammer head element may have a plurality of orienting contours configured to set an orientation of the hammer head element relative to the undercut groove such that the hammer head element is dippable into the undercut groove independently of a rotary position of the hammer head element about the axis.