Connection Fitting With Integrated Screw Sleeve Locking
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Solution Overview
Problem
Existing connection fittings for elongate bodies like hoses and cables require multiple parts and complex assembly processes, making them cumbersome to use for fastening into openings or perforations in walls.
Innovation Solution
A connection fitting with a clamping element featuring abutment tongues and a screw sleeve with matching threads, allowing the lock to be actuated by twisting the screw sleeve, which reduces the number of parts and simplifies assembly by combining the functions of fixing and locking in a single operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple separate parts are used for clamping and locking functions, then each function can be optimized independently, but the assembly process becomes complex and requires multiple work steps
Solution Approach 1:
The patent combines the clamping function (screw sleeve with clamping lamellae) and the locking function (lock mechanism) into a single integrated screw sleeve component. This merging eliminates the need for separate clamping and locking parts, reducing assembly complexity and the number of work steps required during installation
Solution Approach 2:
The screw sleeve is designed as a multi-functional component that simultaneously performs clamping (via clamping lamellae), locking (via engagement with the lock), and actuation functions. This universal design allows a single part to replace multiple specialized components, simplifying both manufacturing and assembly processes
2Productivity
If separate actuation mechanisms are provided for clamping and locking, then each function can be precisely controlled, but the assembly process requires more time and effort
Solution Approach 1:
The screw sleeve integrates both clamping lamellae and lock actuation functionality, allowing a single rotational motion to simultaneously perform both clamping and locking operations. This eliminates the need for separate actuation steps, thereby increasing assembly speed and reducing operational effort
Solution Approach 2:
The clamping lamellae and lock mechanism are pre-configured within the screw sleeve such that their actuation is coupled through the same rotational motion. This preliminary arrangement ensures that both functions are activated in the correct sequence and manner during a single assembly operation, streamlining the installation process
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 solution enables easy and efficient fastening of cables and hoses into openings with reduced parts and assembly effort, providing a secure and adjustable fit for various wall thicknesses and hose diameters, while avoiding the need for elaborate guide means.
Implementation Method 1
abutment tongues, at the free ends of which radially outwardly projecting retaining projections are arranged, these abutment tongues being deformable radially inwards when the fastening projection is pushed into the opening
Implementation Method 2
the screw sleeve has a first thread that matches the thread of the clamping element for the axial displacement of the lock
Implementation Method 3
the screw sleeve has an external thread for a union nut that serves to actuate the clamping lamellae or clamping fingers
Data Source
Figure 1~3
AI summary
A connection fitting (1) for cables (23), tubes or the like includes a tensioning element (6) which is inserted into the opening (2) in a wall (3) and latches thereto. A screw sleeve (5) which is connected to a lock (13) is screwed onto the tensioning element (6), wherein the lock (13) engages in the tensioning element (6) in the position of use and locks the latching. Fitting onto the screw sleeve (5) is a union nut (4) which is used to actuate clamping lamellae (25) which are formed on the screw sleeve (5) and clamp the cable (23) or the tube or the like. The screw threads are in the same direction, with the result that, when the union nut is screwed against the tensioning element, the screw sleeve is concomitantly moved and the screw sleeve (5) is screwed against the tensioning element. The lock (13) is preferably arranged inside the screw sleeve (5) in one piece with the latter with a clearance, which has an annular cross section, or an intermediate space (11) into which the region with the outer thread (12) of the locking element (9) fits (Fig. 1).