Switching Element Guide Means Prevent Tilting
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Solution Overview
Problem
Existing switching devices are prone to failure due to the switching element slipping out of its installation position under external forces, such as vibrations or impacts, especially in low contact force applications like control and auxiliary contacts, where the prestressed switching element can rotate or jam within the switching chamber.
Innovation Solution
A plate-shaped switching element with a guide body having an outer cross section matching the inner cross section of the switching chamber, allowing linear movement and tilting up to 30°, ensuring the element automatically returns to its original position after shocks, with guide means that are at least one and a half times thicker than the switching element to prevent tipping and maintain linear movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the switching element is prestressed by a spring to ensure contact force, then the switching element can reliably connect fixed contacts, but the switching element becomes vulnerable to external forces such as vibrations and impacts that can cause it to slip out of position or tilt
Solution Approach 1:
The switching element is divided into a plate-shaped body with integrated guide means (protrusions) that extend in the main axis direction. This segmentation allows the switching element to maintain its prestressing function while the guide means provide independent protection against tilting and slipping by engaging with corresponding recesses in the switching chamber.
Solution Approach 2:
The guide means extend in the main axis direction (third dimension relative to the plate surface), creating a dimensional extension that prevents tilting and slipping. This dimensional addition allows the switching element to resist external forces without compromising its contact connection reliability.
2Volume of moving object
If the switching element is made plate-shaped with small extent in the main axis direction, then the switching element can be compact and efficient, but it becomes more susceptible to tipping and slipping under spring prestress
Solution Approach 1:
The switching element incorporates guide means as separate functional features (protrusions) that extend along the main axis. This segmentation allows the compact plate-shaped body to maintain its small volume while the guide means provide the necessary stability against tipping and slipping.
Solution Approach 2:
The guide means extend in the main axis direction, adding dimensional presence without significantly increasing the overall volume of the plate-shaped body. This dimensional extension provides the leverage needed to prevent tipping while maintaining compactness.
3Stability of the object's composition
If guide means are added to prevent tilting and slipping, then the switching element stability is improved, but the device complexity increases
Solution Approach 1:
The guide means are merged with the switching element as an integrated structure, where the guide body and guide means form a single piece. This merging eliminates the need for separate guide components, reducing device complexity while maintaining positioning stability.
Solution Approach 2:
The guide means serve multiple functions: they guide the switching element along the movement axis, prevent tilting, prevent slipping under spring prestress, and enable automatic return to the installed position. This multi-functionality reduces the need for additional components, simplifying the overall device 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
The solution effectively secures the switching element against slipping and tilting, allowing it to automatically return to its original position post-shock, ensuring reliable operation and maintenance-friendliness by preventing external influences from causing device failure.
Implementation Method 1
The switching element is prestressed in the direction of the movement axis by means of a spring
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a switching device, comprising: a switching chamber (2); a plate-like switching element (1), which can be moved in the switching chamber (2) along a linear movement axis (Z) between an an ON position in which the switching element (1) connects fixed contacts to one another, and an OFF position in which the switching element (1) is at a distance from the fixed contacts; actuating means (22) for linear movement of the switching element (1) inside the switching chamber (2); and spring means (8) which prestress the switching element (1) in the direction of the movement axis (Z), characterised in that guiding means (10) are provided and configured such that the switching element (1) in the switching chamber (2) is guided along the movement axis (Z) in a linearly movable manner and held such that a main axis (N) of the switching element (1), which runs perpendicularly with respect to the two main extension directions (X, Y) of the switching element (1), is oriented at least substantially parallel to the movement axis (Z).