Mounting Rail Fastener With Pivoting Hammerhead Screw Alignment
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Solution Overview
Problem
Existing fasteners for mounting rails lack versatility and security in attaching objects like cable or pipe clamps to mounting rails, particularly in terms of alignment and frictional hold, especially when dealing with varying slot orientations and sizes.
Innovation Solution
A fastener design featuring a threaded abutment with a pressure piece and elastic cantilever arms, allowing for pivoting and axial movement, combined with a U-shaped bracket for secure engagement with the mounting rail, ensuring stable attachment through friction and potential form fit, even at oblique angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional fastener with fixed geometry is used, then the structure is simple, but it cannot accommodate varying slot orientations and sizes
Solution Approach 1:
The abutment is designed to be pivotable relative to the pressure piece, allowing it to change its angular position dynamically. This enables the fastener to adapt to different slot orientations by pivoting the abutment to the appropriate angle, while the pressure piece maintains its fixed position for stable mounting rail contact
Solution Approach 2:
The fastener is divided into functionally independent components: the pressure piece for stable contact with the mounting rail, and the abutment for engagement with the slot. This segmentation allows each component to be optimized independently - the pressure piece for stability and the abutment for adaptability through pivoting
2Ease of operation
If the abutment is rigidly fixed to the pressure piece, then the fastener structure is simple, but alignment adjustments cannot be made
Solution Approach 1:
The connection between the abutment and pressure piece is made dynamic through a pivoting mechanism. The abutment can rotate relative to the pressure piece about an axis, enabling alignment adjustments to match different slot orientations while maintaining a relatively simple connection structure
3Reliability
If the fastener uses only frictional hold, then the structure is simple, but security under load is insufficient
Solution Approach 1:
The fastening mechanism combines two retention methods: frictional hold between the pressure piece and mounting rail, and form fit engagement of the abutment in the slot. This merging of friction-based and geometric-based retention provides enhanced security under load while maintaining operational simplicity
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
The fastener provides secure and versatile attachment to mounting rails by allowing alignment adjustments and maintaining hold through friction, preventing unintentional displacement, even under load, while accommodating different slot orientations and sizes.
Implementation Method 1
two elastic cantilever arms (22) arranged in the bracket, which run obliquely to the axis of the fastener
Implementation Method 2
The fastener is held against unintentional displacement on the mounting rail by friction or possibly also by a form fit
Data Source
Figure 1
Figure 2~4
AI summary
The invention relates to a fastener (1) for a fastening on a mounting rail (2), having a hammerhead screw (5) which is accommodated in a U-shaped clip (6) such that the hammerhead screw can be pivoted about the axis (10) thereof. According to the invention, two oblique and elastic cantilever arms (22) are provided in the clip (6), loading a screw head (8) against a perforated plate (7) which forms a pressure piece (13) and is arranged on a screw shaft (11). The cantilever arms (22) have heads (23) which limit a pivoting angle of the screw head (8) of the hammerhead screw (5) to about 90°, such that the screw head (8) can be set transversely in the mounting rail (2).