Cistern Actuation Device Adjustable Stop Unit
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Solution Overview
Problem
Existing actuating devices for cisterns have issues with maintaining the position of operating buttons in the starting position and lack adjustability, leading to installation challenges due to angular errors during wall mounting.
Innovation Solution
An actuating device with an adjustable stop unit comprising a stop rod and stop element, allowing for precise adjustment of the actuating element's position, featuring a stop nut with an external thread and a guide for rotational displacement, ensuring the stop unit holds the actuating element in place without unintentional movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the actuating device is installed in the wall without adjustment means, then the installation process is simpler, but angular errors during installation cannot be corrected and the operating buttons are arranged at an angle to the wall
Solution Approach 1:
The stop unit is designed to be adjustable during installation, allowing the actuating element to be positioned at different locations on the actuation plate. This dynamic adjustment capability enables correction of angular errors while maintaining simple installation procedures, as the adjustment can be made in-situ without complex repositioning.
Solution Approach 2:
The stop unit provides preliminary positioning of the actuating element before final installation completion. By allowing adjustment of the stop unit's position on the actuation plate, the installer can pre-align the operating buttons correctly before securing the device to the wall, preventing misalignment issues.
2Device complexity
If the actuating element position is fixed without adjustment capability, then the device structure is simpler, but the position cannot be corrected after installation
Solution Approach 1:
The stop unit incorporates an adjustable mechanism that allows position modification during installation but maintains a fixed, reliable position once set. The adjustment feature is simple (e.g., movable stop along the actuation direction) yet provides sufficient flexibility for alignment correction while ensuring stable position maintenance during operation.
Solution Approach 2:
The stop unit is designed as a separate, adjustable component that can be independently positioned on the actuation plate. This segmentation allows the stop unit to be adjusted to different positions without affecting the overall device structure, providing both simplicity and adjustability.
3Ease of operation
If the stop unit allows free movement of the actuating element, then adjustment is easier, but unintentional movement during use may occur
Solution Approach 1:
The stop unit provides dynamic adjustment capability during installation but transitions to a stable, fixed position during operation. The design allows easy movement for positioning purposes while incorporating features (such as friction, detents, or simple mechanical stops) that prevent unintentional displacement once the desired position is reached.
Solution Approach 2:
The stop unit is designed to counteract potential unintentional movements by providing a positive stop or locking mechanism once the actuating element is positioned. This preliminary anti-action prevents the actuating element from moving counter to the actuation direction during normal operation, ensuring position stability.
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 easy and reliable adjustment of the actuating element's position relative to the actuation plate, preventing counter-movement and ensuring precise installation, while the spring element provides reliable resetting and absorbable force.
Implementation Method 1
The stop element (13) is displaceable along the longitudinal axis of the stop rod (12)
Implementation Method 2
a spring element which provides a spring force on the actuating element counter to the actuating direction
Data Source
Figure 1
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Figure 3
AI summary
An actuating device for a flush valve of a cistern comprises an actuating plate (3) in which at least one actuating element (1, 2) for flushing is mounted, wherein the at least one actuating element (1, 2) is movable from a starting position to an end position along an actuating direction (A) during flushing. The actuating device further comprises at least one stop unit (5) which provides a stop for the movement of the at least one actuating element (1, 2) when the actuating element (1, 2) is automatically moved back from the end position to the starting position.