Sliding Wall Guide Rail Switch Actuation Mechanism
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Solution Overview
Problem
Existing running rails for sliding walls experience high switching and holding forces when carriages pass through switches, leading to increased driving resistance and mechanical wear, which complicates safe and efficient operation.
Innovation Solution
A novel switching mechanism is introduced where the switch is actuated by a carriage outside its operational range, using a pair of shift levers connected to a pivoting lever with a spring preload, allowing for reduced shifting forces and smooth movement, enabling flexible operation and reduced control effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the carriage presses against the switch while passing through it to change the route, then the switch can be actuated, but the carriage is subjected to significant switching and holding forces which increases driving resistance
Solution Approach 1:
The carriage actuates the switch before it reaches the switch area, not during passage through it. The switching mechanism is positioned upstream of the switch, allowing the carriage to change the route in advance, thereby avoiding the need to press against the switch while passing through it and eliminating the associated high forces and driving resistance
Solution Approach 2:
A switching mechanism with a pivoting lever and switching element acts as an intermediary between the carriage and the switch. The carriage moves the switching element via the pivoting lever, which then actuates the switch. This intermediary mechanism transfers the switching action to occur before the carriage reaches the switch area, reducing the forces required
2Ease of operation
If the carriage actuates the switch while passing through it, then the route can be changed, but mechanical wear on the carriage and points increases
Solution Approach 1:
The switch is actuated in advance before the carriage enters the switch area, using a switching mechanism positioned upstream. This preliminary action allows route changing to occur without the carriage directly interacting with the switch during passage, significantly reducing mechanical wear on both the carriage and the points
Solution Approach 2:
The pivoting lever and switching element serve as intermediaries that transfer the switching action from the carriage to the points. This intermediary mechanism reduces direct contact and friction between the carriage and the switch components, minimizing mechanical wear and improving reliability
3Device complexity
If a simple switching element is used between the rail and branch rail, then the structure is simplified, but the switching forces required to actuate it are reduced only if actuated outside the switch area
Solution Approach 1:
The switching mechanism is positioned upstream of the switch area, allowing the simple switching element to be actuated before the carriage reaches the switch. This timing arrangement enables the use of a simple switching element with minimal shifting forces, as the carriage can apply force in advance when the mechanical advantage is more favorable
Solution Approach 2:
The switching mechanism uses a pivoting lever that replicates the switching action at a different location (upstream of the switch area). This allows the simple switching element to be actuated indirectly through the pivoting lever, reducing the forces required while maintaining structural simplicity
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
This solution minimizes mechanical wear and ensures smooth carriage movement by reducing switching forces, allowing for safe and efficient operation of sliding wall elements, even when part of the system is in the parking position, and facilitates easy control of electrically operated systems.
Implementation Method 1
A particularly robust construction of the switching mechanism is achieved if the switching lever is preloaded by a spring element to return it to its rest position
Data Source
Figure 1
Figure 2A~2D
Figure 3a~3b
AI summary
The invention relates to a guide rail for a sliding wall, comprising several sliding wall elements (5, 6, 7, 8, 9, 10), in which each sliding wall element (5, 6, 7, 8, 9, 10) is slidably seated on particularly two track carriages (3.1, 3.2), wherein the guide rail (1.1) can be connected to and/or separated from a diverging guide rail (1.2) by way of a switch point (1), which can be controlled by the track carriages (3.1, 3.2). The invention provides that for adjusting the switch point (1), at least one track carriage (3.1, 3.2) of a sliding wall element (5, 6, 7, 8, 9, 10) assumes a position, which is arranged beyond the switch point (1).