Quick-Fastening Guide Rail to Prevent Unintentional Detachment
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Solution Overview
Problem
Existing guide rails can unintentionally detach from rods under extreme forces or deformations, leading to insecure fixation, especially in the front end region.
Innovation Solution
A guide rail with a quick-fastening device featuring two retaining elements, where the latching lug is fixed in its locking position within the holding element's upper leg, preventing unintentional loosening by requiring manual actuation to release, and an inclined side edge of the latching lug ensures secure engagement even under high loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the latching lug extends to the horizontal central plane of the rod, then the guide rail can be easily released by manual pivoting, but the guide rail may unintentionally detach under extreme forces or deformations
Solution Approach 1:
The latching lug is extended vertically into the upper leg of the retaining element, creating a three-dimensional engagement where the lug fits within the leg's opening. This vertical dimension prevents lateral detachment while maintaining manual release capability through controlled pivoting motion.
Solution Approach 2:
The upper leg of the retaining element acts as an intermediary structure that receives and secures the latching lug. The leg's opening provides a constrained environment for the lug, preventing unintended disengagement while allowing deliberate release when the lug is pivoted below the rod level.
2Reliability
If the latching lug is secured within the upper leg opening, then unintentional loosening is prevented, but the structure becomes more complex
Solution Approach 1:
The retaining element and latching mechanism are merged into a single integrated structure. The upper leg and its opening are formed as one piece with the rest of the retaining element, eliminating the need for separate fastening components and reducing overall structural complexity while maintaining security.
Solution Approach 2:
The upper leg's opening automatically secures the latching lug through its geometric configuration. The lug is passively retained within the opening without requiring additional locking mechanisms, springs, or adjustment components, achieving security through the inherent geometry of the integrated structure.
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
Ensures the guide rail remains securely fixed to the rod, preventing unintentional detachment even under high loads or system deformations, with the latching lug pivoting upwards for enhanced security and a noise-indicative assembly process.
Implementation Method 1
a resilient latching lug extending upwards from there, which engages behind the bar encompassed by the holding element when the guide rail is in the installed position
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a guide rail (1) that can be mounted on bars (3) of a grid-like side part (2) of a baking oven, a dishwasher, or similar items of furniture, said bars running horizontally and bent at an angle in the end region (3a, 3b), said rail having a quick fastening device made of two mounting elements (4, 4', 5) attached in the end regions of the guide rail (1) and that can be fixed on a bar (3) of a grid-like side part (2), and comprising a first and second mounting segment (4a, 4b, 5a, 52, 53) partially enclosing a bar (3) in the longitudinally extending region thereof and at the bent end regions (3a, 3b) thereof respectively, wherein the mounting segment (52, 53) facing the rear, bent end region (3b) is open in the direction toward the back side of the guide rail (1), so that the guide rail (1) can be slid onto and attached to one of the bars (3), starting from the front side of the side grid (2). In addition the front mounting element (4, 4') comprises a spring-loaded catch lug (42) in the mounting segment (4a) thereof partially enclosing a bar (3) in the longitudinally extending region thereof at a leg (40) located below a bar (3) and extending upward therefrom, said lug engaging behind the bar (3) enclosed by the mounting element in the assembled position of the guide rail (1), wherein the upper, free end (43) of the catch lug (42) protrudes into an aperture (44) of the leg (41) of the front mounting element (4, 4') overlapping the top side of the bar (3).