Strain Relief Strap Tilting Lock for Micropipe Directional Fixation
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Solution Overview
Problem
Existing strain relief devices for micropipes and similar tubular objects in fiber optic network distribution cabinets fail to allow directional fixation without being immovable in both directions, requiring tools for adjustment and increasing assembly work.
Innovation Solution
A strain relief strap with a hole and an angled section featuring sharp edges, allowing the micropipe to be securely fixed in one direction by tilting when tensile force is applied, while remaining free to move in the opposite direction without tool assistance, utilizing a design with an angle greater than 90 degrees and minimal play for reliable locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If micropipes are fixed using screws and clamps, then they cannot be pulled out of the distribution cabinet, but it increases assembly work and requires tools for adjustment
Solution Approach 1:
The strain relief strap is designed to automatically perform the fixation function without requiring external tools or additional components. The sharp edge of the strap self-locks into the micropipe when tensile force is applied, creating a self-servicing fixation mechanism that eliminates the need for screws, clamps, or other fastening tools.
Solution Approach 2:
The invention extracts the essential fixation function from complex multi-component systems (screws, clamps, tools) and implements it through a single integrated strap component. This extraction simplifies the system by removing unnecessary elements while retaining the core functionality of preventing micropipe removal.
2Reliability
If micropipes are fixed immovably in both directions, then they cannot be pulled out, but it prevents length adjustment and increases assembly work
Solution Approach 1:
The strain relief strap transitions from a static fixed position to a dynamic state when tensile force is applied. The strap tilts and the sharp edge locks into the micropipe only when needed (under tension), allowing the micropipe to be freely inserted initially and then securely fixed only during pull-out attempts, enabling both installation flexibility and operational reliability.
Solution Approach 2:
The strap's function is segmented into two distinct operational modes: a free-state mode during installation allowing micropipe insertion and adjustment, and a locked-state mode during operation preventing pull-out. This segmentation allows the same component to provide both adaptability during installation and reliability during use.
3Reliability
If strain relief devices fix micropipes in both directions, then they provide secure fixation, but they prevent free movement in the opposite direction and increase complexity
Solution Approach 1:
The strain relief strap employs asymmetric geometry with a sharp edge positioned at a specific angle relative to the strap body. This asymmetric design creates different mechanical behaviors in opposite directions: under tensile force, the sharp edge locks into the micropipe providing secure fixation, while in the opposite direction, the micropipe can be freely inserted without resistance, achieving directional fixation with simple geometry.
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
Enables secure fixation of micropipes in one direction and free movement in the other, reducing assembly work and allowing easy length adjustment in fiber optic network distribution cabinets without tools, with the strap automatically resetting.
Implementation Method 1
the micropipe causes a tilting movement of the strain relief strap around an edge of the second section, which is located on a fixed Object is supported, whereby the micropipe is firmly jammed in the hole and is held securely by its sharp edge
Implementation Method 2
when a tensile force acts on the micropipe in the one direction in which the movement of the micropipe is to be blocked
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2E
AI summary
The strain relief tab, with which a micropipe or the like can be fixed in one direction of tension while the micropipe remains freely movable in the other direction, is characterized in that the strain relief tab has a first section with a hole through which the micropipe can pass, and a second section bent at an angle, that the hole has a sharp-edged edge, and that when a tensile force is applied by the micropipe in one direction of tension, the strain relief tab performs a tilting movement about an edge of the second section, thereby fixing the micropipe firmly in the hole.