Media Line Connector Locking for Correct Assembly and High Holding Force
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Solution Overview
Problem
Existing connecting devices for media lines require high assembly effort and are prone to incorrect assembly, often failing to apply sufficient holding forces, leading to potential damage.
Innovation Solution
A connecting device with a movably held fastening element featuring control surfaces and a recess, which elastically deforms during assembly to ensure proper locking, utilizing a restoring force to secure the insert part and prevent incorrect assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional fastening elements are used in connecting devices, then assembly is simpler, but holding forces are insufficient leading to potential damage
Solution Approach 1:
The fastening element is designed with movable characteristics, allowing it to transition between different positions (initial position blocking insertion, and locked position after insertion). This dynamic behavior enables the fastening element to automatically apply large holding forces once inserted, while requiring controlled assembly effort only during the insertion process itself.
Solution Approach 2:
The fastening element utilizes elastic deformation to generate restoring forces. During assembly, the insert part elastically deforms the fastening element, which then generates a restoring force that locks the insert part in place. This parameter change from deformable to locked state enables the transition from low assembly effort to high holding force.
2Reliability
If conventional fastening elements are used, then device structure is simpler, but incorrect assembly cannot be detected
Solution Approach 1:
The fastening element provides built-in feedback through its control surfaces and movable design. When the insert part is correctly inserted, the fastening element transitions to a locked position that can be detected. If insertion is incorrect or insufficient, the fastening element remains in the initial position or cannot be properly locked, providing clear feedback that assembly is incorrect without requiring additional detection devices.
3Reliability
If high assembly forces are applied to ensure secure engagement, then connection reliability improves, but risk of damage increases
Solution Approach 1:
The dynamic design of the fastening element allows it to progressively engage with the insert part during insertion. The movable fastening element transitions from an initial blocking position to a locked position, distributing the assembly force over the insertion process rather than requiring a single high-force application. This reduces peak forces and damage risk while ensuring secure engagement.
Solution Approach 2:
The elastic deformability of the fastening element acts as a cushioning mechanism during assembly. The fastening element can elastically deform to accommodate the insert part, absorbing excess assembly forces and preventing damage to either component. This beforehand cushioning capability allows reliable connection while protecting against damage from excessive forces.
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 reduces assembly effort and ensures secure, reliable attachment of media lines by detecting incorrect assembly and applying large holding forces, minimizing damage risks.
Implementation Method 1
The restoring force counteracting the movement of the fastening element caused by the insertion of the insert part is brought about by an at least partially elastic deformation of the fastening element, in particular caused by the movement.
Data Source
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AI summary
The invention relates to a connecting device (1) for media lines, comprising a coupling element (2), an insert part (3) and a fastening element (4), wherein: the coupling element (2) has a connection opening (5) and a fluid channel (6); the insert part (3) can be inserted into the connection opening (5); and the insert part (3) can be fastened to the coupling element (2) by means of the fastening element (4). The connecting device (1) is realized in that the fastening element (4) has at least one control surface (7). When the insert part (3) is inserted into the connection opening (5) under the action of an installation force, the insert part (3) acts on the control surface (7) in such a way that the fastening element (4) is moved against a restoring force. If the installation force is sufficient, the insert part (3) slides past the control surface (7) and the fastening element (4) interlockingly locks the insert part (3). If the installation force is not sufficient, the fastening element (4) presses the insert part (3) back out of the connection opening (5).